CN119585148A

CN119585148A - Seat back frame

Info

Publication number: CN119585148A
Application number: CN202380054423.9A
Authority: CN
Inventors: 猪濑贵之; 稻叶崇大; 若山周平; 福田直庆
Original assignee: TS Tech Co Ltd
Current assignee: TS Tech Co Ltd
Priority date: 2022-12-08
Filing date: 2023-11-22
Publication date: 2025-03-07
Also published as: WO2024122338A1

Abstract

In order to support the webbing with high strength by a simple structure, the seat back frame of the present invention includes a first belt guide 15 through which the webbing B1 paid out from the webbing take-up device B is inserted, and a second belt guide 16 different from the first belt guide 15 through which the webbing B1 paid out from the webbing take-up device B is inserted. The load from the seat belt B1 is dispersedly received by the first belt guide 15 and the second belt guide 16, thereby supporting the seat belt with high strength.

Description

Chair back frame

Technical Field

The present invention relates to a seat back frame.

Background

In japanese patent application laid-open No. 2018-184037, a guide wire (guide wire) for guiding a seat belt is provided in the upper center of a tube frame (PIPE FRAME) constituting a seat back frame of a vehicle seat. The guide wire passes through the webbing that is paid out from the webbing take-up mechanism provided therebelow from below. The guide wire guides the webbing to fold back toward the front side and the lower side (see patent document 1).

In japanese patent application laid-open No. 2017-226376, a seat back frame is constituted by a panel frame and a pipe frame, and a seat belt is passed through a gap between an upper portion of the pipe frame and the panel frame (see patent document 2).

Prior art literature

Patent literature

Patent document 1 Japanese patent laid-open publication No. 2018-184037

Patent document 2 Japanese patent laid-open publication No. 2017-226376

Disclosure of Invention

Problems to be solved by the invention

In the seat back frame of patent document 1, the seat belt is supported by a guide wire. Therefore, it is difficult to secure sufficient support strength for a large load applied from the seat belt.

The seat back frame of patent document 2 is configured such that a seat belt is passed through a gap between a tube frame and a panel frame. Thus, in the seat back, the protection parts of the resin are required on the tube frame side and the panel frame side, respectively, so that the seat belt is prevented from directly sliding to the tube frame and the panel frame, and the complexity of the structure for supporting the seat belt becomes a problem.

The present invention has been made in view of the above circumstances, and an object thereof is to support a seat belt with high rigidity by a simple structure.

Technical means for solving the problems

In order to solve the above problems, the invention described in claim 1 is a seat back frame,

The method is characterized by comprising the following steps:

a first belt guide for inserting a webbing paid out from a webbing take-up device, and

A second belt guide, different from the first belt guide, allows the webbing paid out from the webbing winding device to be inserted.

The invention described in claim 2 is the seat back frame described in claim 1,

It is characterized by comprising a pipe frame,

The first belt guide and the second belt guide are mounted along the tube periphery of the tube frame.

The invention according to claim 3 is the seat back frame according to claim 2, characterized in that,

The first and second belt guides each comprise U-shaped steel wires,

The first and second belt guides are each formed by attaching one end portion and the other end portion of the wire along the tube circumferential surface of the tube frame,

When one side is set to the front and the other side is set to the rear with the seat back frame interposed therebetween, the insertion portion of the webbing of the first belt guide extends to the front side than the center of the webbing winding device, and the insertion portion of the webbing of the second belt guide does not extend to the front side than the center of the webbing winding device.

The invention described in claim 4 is the seat back frame according to claim 2, characterized in that,

The first and second belt guides each comprise U-shaped steel wires,

In the case where one side is set to the front and the other side is set to the rear with the seat back frame interposed therebetween, the first and second belt guides are each mounted with one end portion and the other end portion of the wire along the tube peripheral surface of the tube frame,

The end portion on the insertion portion side of the webbing of the first belt guide extends from the upper portion of the tube peripheral surface of the tube frame toward the front side, and the end portion on the insertion portion side of the webbing of the second belt guide extends from the lower portion of the tube peripheral surface of the tube frame toward the front side.

The invention according to claim 5 is the seat back frame according to claim 4, characterized in that,

The first belt guide and the second belt guide comprise identically shaped members.

The invention according to claim 6 is the seat back frame according to claim 2, characterized in that,

The tube frame is provided along an outer edge of the seat back frame,

The pipe frame has a connecting member disposed along the up-down direction inside,

The linking member is bent in such a manner as to bypass the first belt guide or the second belt guide while an upper end portion is linked to the tube frame.

The invention according to claim 7 is the seat back frame according to claim 2, characterized in that,

The first belt guide and the second belt guide comprise an integrated single member.

The invention described in claim 8 is the seat back frame according to claim 2, comprising:

A panel frame coupled to the pipe frame,

The panel frame has a avoiding portion that avoids the first and second belt guides relative to mounting portions of the first and second belt guides in the tube frame.

ADVANTAGEOUS EFFECTS OF INVENTION

The invention according to claim 1 has a first belt guide and a second belt guide for inserting a webbing paid out from a webbing take-up device. Therefore, even when a large load is applied to the seat belt, the load applied from the seat belt can be dispersed to the first belt guide and the second belt guide, and the support strength can be improved with a simple structure.

In the invention according to claim 2, the first belt guide and the second belt guide are attached along the pipe circumferential surface of the pipe frame, so that the area of the attachment surface can be ensured to be large, and the attachment strength can be improved. Further, by attaching the belt guides along the circumferential surface of the tube, when a load is applied to each belt guide in a specific direction, a force is easily applied to the attachment surface of the tube frame in a direction along the circumferential surface, which is the attachment surface, rather than in a direction in which the attachment surface is peeled off. Therefore, each belt guide is less likely to separate from the tube frame, and the strength against the load can be improved.

In the invention described in claim 3, the insertion portions of the first belt guide and the second belt guide are located on the front side and the rear side with respect to the center of the webbing winding device. Therefore, each belt guide can be guided well in the case of being paid out from the webbing winding device toward the front side of the seat back frame through the second belt guide and the first belt guide.

In addition, when the load is applied from the seat belt to the insertion portion of the first belt guide and the insertion portion of the second belt guide, the load applied to each belt guide can be appropriately dispersed while suppressing the deviation. Thus, strength against a load can be improved.

Further, since the second belt guide is located further rearward than the center of the webbing winding device, when a large load is applied to the webbing, the load to separate the webbing winding device from the installation position by the webbing can be reduced. Thus, the mounting strength of the webbing winding device B can be improved.

In the invention according to claim 4, the end portion on the insertion portion side of the seat belt of the first belt guide extends toward the front side from the upper portion of the tube peripheral surface of the tube frame, and the end portion on the insertion portion side of the seat belt of the second belt guide extends toward the front side from the lower portion of the tube peripheral surface of the tube frame.

Therefore, when a load is applied to the webbing, the force applied to each belt guide is less likely to be generated in the direction that promotes separation from the tube circumferential surface of the tube frame, and can be directed in the direction along the tube circumferential surface, so that the strength against the load can be improved.

In the invention according to claim 5, since the first belt guide and the second belt guide include members having the same shape, the manufacturing can be facilitated and the manufacturing cost can be reduced by the common use of the parts.

In the invention according to claim 6, the pipe frame is provided along the outer edge of the seat back frame, and the connecting member disposed inside the pipe frame is bent so as to bypass the first belt guide or the second belt guide, and the upper end portion thereof is connected to the pipe frame. Thus, the installation position of the first belt guide or the second belt guide can be appropriately ensured. Further, the connecting member can be disposed inside the tube frame regardless of the arrangement of the first belt guide or the second belt guide, and the frame strength can be improved.

In the invention according to claim 7, the first belt guide and the second belt guide include a single integrated member, so that reduction in the number of parts, reduction in manufacturing cost, weight saving, and the like can be achieved.

In the invention according to claim 8, the panel frame has the avoiding portion with respect to the mounting portions of the first belt guide and the second belt guide in the tube frame, so that interference between each belt guide and the panel frame can be avoided. Further, since the panel frame is a panel material, the avoiding portions are easily formed by the projections and depressions, the attaching portions of the belt guides are easily secured, and the degree of freedom in arrangement of the attaching portions can be improved.

Drawings

Fig. 1 is a front view of a seat back frame of the first embodiment.

Fig. 2 is a rear view of the seat back frame.

Fig. 3 is a perspective view of the seat back frame.

Fig. 4 is a partial perspective view of the upper center of the seat back frame.

Fig. 5 is an enlarged front view of the upper end center portion of the seat back frame.

Fig. 6 is a cross-sectional view taken along line A-A of the seat back frame of fig. 1.

Fig. 7 is a front view of a seat back frame of the second embodiment.

Fig. 8 is a perspective view of a belt guide of a third embodiment.

Fig. 9 is a front view of a seat back frame of the fourth embodiment.

Fig. 10 is a front view of a seat back frame of the fifth embodiment.

Fig. 11 is a front view of a seat back frame of the sixth embodiment.

Fig. 12 is a front view of a seat back frame of the seventh embodiment.

Fig. 13 is a front view of a seat back frame of the eighth embodiment.

Fig. 14 is an external perspective view of the vehicle seat and latch according to the present embodiment.

Fig. 15 is a perspective view of the locking unit and the shackle.

Fig. 16 is a front view of the shackle.

Fig. 17A is a view showing how the latch is deformed.

Fig. 17B is a view showing how the latch is deformed.

Fig. 17C is a view showing how the latch is deformed.

Fig. 18A is a front view showing a latch according to modification 1.

Fig. 18B is a view of the latch according to modification 1, as seen from the right direction of the vehicle seat.

Fig. 19A is a front view showing a latch according to modification 2.

Fig. 19B is a view of the latch according to modification 2, as seen from the right direction of the vehicle seat.

Fig. 20 is a perspective view of a vehicle seat having leg rests according to an embodiment of the vehicle seat. Fig. 21 is a perspective view of a vehicle seat having armrests according to an embodiment of the present invention. Fig. 22 is a perspective view of a vehicle seat having side stays according to an embodiment of the vehicle seat. Fig. 23 is a side view of the vehicle seat shown in fig. 20.

Fig. 24 is a view showing a seat frame of a vehicle seat.

Fig. 25 is a perspective view of the first member and the second member.

Fig. 26 is a schematic view of the lock mechanism.

Fig. 27 is a front view of the vehicle seat shown in fig. 20.

Fig. 28 is a front view of the vehicle seat shown in fig. 21.

Fig. 29 is a front view of the vehicle seat shown in fig. 22.

Fig. 30 is a front view of the vehicle seat shown in fig. 21.

Fig. 31A is a schematic view of the lock mechanism and the indicator in the unlocked state.

Fig. 31B is a schematic view of the lock mechanism and the indicator in the locked state.

Fig. 32 is a view showing an assembled structure of the connecting member.

FIG. 33 is a cross-sectional view taken along section line XIV-XIV shown in FIG. 32.

FIG. 34 is a cross-sectional view taken along section line XV-XV shown in FIG. 32.

Fig. 35 is a view showing another example of a seat frame included in a vehicle seat.

FIG. 36 is a cross-sectional view taken along section line XVII-XVII shown in FIG. 35.

Fig. 37 is a view showing an assembly structure of the connection member.

FIG. 38 is a cross-sectional view taken along section line XIX-XIX shown in FIG. 37.

FIG. 39 is a cross-sectional view taken along section line XX-XX shown in FIG. 37.

Fig. 40 is a view of the vehicle seat having the mounting portion cover as viewed from above.

Fig. 41A shows an example of the first member or the second member.

Fig. 41B shows an example of the first member or the second member.

Fig. 41C shows an example of the first member or the second member.

Fig. 41D shows an example of the first member or the second member.

Fig. 42A shows an example of the mounting portion cover.

Fig. 42B shows an example of the mounting portion cover.

Fig. 42C shows an example of the mounting portion cover.

Fig. 42D shows an example of the mounting portion cover.

Fig. 43 is a view showing an instrument panel having an indicator.

Fig. 44 is a front view of the first vehicle seat and the second vehicle seat.

Fig. 45 is a front view of the vehicle seat in the leg rest standard mode.

Fig. 46 is a side view of the vehicle seat in the armrest specification mode.

Fig. 47A is a diagram showing an example of the lock mechanism and the indicator in the unlocked state.

Fig. 47B is a diagram showing an example of the lock mechanism and the indicator in the locked state.

Fig. 48 is a perspective view showing a vehicle seat including armrests.

Fig. 49 is a perspective view of the vehicle seat showing the armrest unfolded state.

Fig. 50 is a perspective view showing the seatback frame and the armrest frame.

Fig. 51 is an enlarged perspective view showing the surroundings of the left and right arm rest brackets.

Fig. 52 is an enlarged perspective view for explaining the positions of deformed portions formed in the left and right arm rest brackets.

Detailed Description

Embodiment related to seat Back frame

First embodiment

Embodiments relating to a seat back frame will be described with reference to fig. 1 to 6.

However, the following embodiments are given various restrictions which are technically preferable for the implementation of the present invention, but the scope of the present invention is not limited to the following embodiments and examples.

The present embodiment is a seat back frame to be applied to a backrest of a long seat for a vehicle.

A vehicle including a bench seat to which the seat back frame shown below is applied includes all vehicles that a person rides on to move, such as a ship, a flying object, and a vehicle, but in the present embodiment, a case in which the seat back frame is applied to a bench seat of a vehicle, particularly an automobile is exemplified.

For example, a bench seat of an automobile has a seat cushion as a seat portion, a seat back as a backrest, and a headrest.

For example, in the case of a bench seat with three seats, the seat back includes a left seat back that forms the seat backs of the center seat and the left seat, and a right seat back.

Each of the seat back bags includes a seat back frame as a skeleton, a cushion material including a cushion material, and a skin material including a cloth or the like covering the cushion material.

The following embodiments describe a seat back frame used for a left seat back.

Fig. 1 is a front view of a seat back frame 100 according to a first embodiment, fig. 2 is a rear view, and fig. 3 is a perspective view.

In the drawings of the present embodiment, the directions of the upper, lower, left, right, front, rear, and the like indicate the directions in a state of being mounted on the vehicle. The following description will be made of the respective portions of the seat back frame 100 based on the directions in the attached state. In fig. 1, the front side of the paper surface indicates "front", the back side indicates "back", and the left hand side is "left" and the right hand side is "right" in a state of being directed forward.

In addition, strictly speaking, each seat back frame 100 is mounted to the vehicle in a state in which the upper end portion thereof is slightly inclined rearward, but unless otherwise specified, the plate surface of each seat back frame 100 is set to be in a state along the up-down direction and the left-right direction for convenience of explanation.

The seat back frame 100 mainly includes a tube frame 20, a panel frame 30 as a back panel which is a plate-like member, a support bracket 40 of the webbing winding device B, a mounting bracket 50 of the locking device, headrest frames 11, 12, armrest brackets 13, 14, a first belt guide 15, a second belt guide 16, a latch member 17, and an installation bracket 18.

[ Tube frame ]

The pipe frame 20 has first to fourth pipe members 21 to 24.

The first pipe member 21 has a left frame portion 211, a right frame portion 212, and an upper frame portion 213. The first pipe member 21 is formed by bending a single pipe material to form a left frame portion 211, a right frame portion 212, and an upper frame portion 213. Thereby, the number of parts is reduced, and the ease and cost of manufacturing the pipe frame 20 are reduced.

The left frame portion 211 and the right frame portion 212 are disposed at the left end portion and the right end portion of the seatback frame 100, respectively. The left frame portion 211 and the right frame portion 212 are each oriented parallel to the up-down direction.

The upper frame portion 213 connects the upper end of the left frame portion 211 and the upper end of the right frame portion 212. The upper frame 213 is disposed at the upper end of the seatback frame 100 in an orientation parallel to the left-right direction.

The left frame portion 211, the right frame portion 212, and the upper frame portion 213 are formed by bending a metal pipe having a circular cross section and made of stainless steel or the like into a substantially U-shape. Therefore, the weight reduction is realized, and the manufacturing is easy and the cost is reduced.

The second to fourth pipe members 22 to 24 of the first to fourth pipe members 21 to 24 are metal pipes having the same outer diameter, and the first pipe member 21 is a metal pipe having a larger outer diameter than the second to fourth pipe members 22 to 24.

The first pipe member 21 is located at an upper end portion and left and right end portions of the seatback frame 100. The lower end portion of the seat back frame 100 is supported by the vehicle body of the automobile. Accordingly, the seat back frame 100 maintains high rigidity with respect to the entire seat back frame 100 by disposing the first pipe members 21 having higher rigidity at the upper end portion and the left and right end portions that are apart from the lower end portion supported by the vehicle body.

Further, the first pipe member 21 is disposed so as to surround the entire planar surface of the seat back frame 100, and therefore the rigidity of the entire planar surface of the seat back frame 100 is also improved.

The second pipe member 22 includes a linear metal pipe made of stainless steel or the like having a circular cross section.

The second pipe member 22 is disposed at the lower end of the seatback frame 100 in an orientation parallel to the left-right direction. The second pipe member 22 corresponds to a lower frame.

The left and right end portions of the second pipe member 22 are joined to the lower end portions of the left and right frame portions 211 and 212 of the first pipe member 21. Thus, the first pipe member 21 and the second pipe member 22 constitute a rectangular frame-like frame along the outer edge of the seat back frame 100.

The left and right end portions of the second pipe member 22 are both compressed and processed flat. In response, the lower end portions of the left frame portion 211 and the right frame portion 212 are also machined so that the rear portions of the outer peripheral surfaces, that is, the tube peripheral surfaces, become flat. The flat surfaces of the second pipe member 22 and the left and right frame portions 211 and 212 are joined by welding.

In this way, the first pipe member 21 and the second pipe member 22 are joined with high strength by the joining of the flat surfaces to each other.

In the following description, when the joining is referred to as "joining", the joining is performed by welding, more preferably by laser welding. However, the welding is not limited to laser welding, and resistance welding such as spot welding or other welding such as arc welding may be performed, and a joining method other than welding may be used.

Further, a part between the middle portion and the left end portion in the left-right direction of the second pipe member 22 is compressed to form a flat portion 221. The flat portion 221 is planar along the front-rear-left-right direction. The lower end portion of the latch member 17 described later is joined to the front surface of the flat portion 221.

The third pipe member 23 includes a linear metal pipe made of stainless steel or the like having a circular cross section. The third pipe member 23 is disposed along the up-down direction inside the pipe frame 20.

The upper end portion of the third pipe member 23 is joined to the upper frame portion 213 of the first pipe member 21. The lower end portion of the third pipe member 23 is joined to the second pipe member 22. The third pipe member 23 corresponds to a connecting member that connects the middle portion of the upper frame portion 213 and the middle portion of the second pipe member 22 that is the lower frame portion.

The upper and lower end portions of the third pipe member 23 are both compressed and processed flat. In contrast, the joint portion with the third pipe member 23 in the upper frame portion 213 is also machined, and the outer peripheral surface, that is, the rear portion of the pipe peripheral surface is flattened. Similarly, the joint between the second pipe member 22 and the third pipe member 23 is also machined, and the outer peripheral surface, that is, the rear portion of the pipe peripheral surface is flattened.

By these, the third pipe member 23 and the first and second pipe members 21 and 22 are joined with high strength by joining the flat surfaces to each other.

The third pipe member 23 is fixed inside the pipe frame 20 in a state along the up-down direction. Thus, the seat back frame 100 can be provided with rigidity against bending stress about the lateral direction in the inner region of the pipe frame 20.

Further, the deflection in which the interval between the upper frame portion 213 and the second pipe member 22 in the pipe frame 20 is enlarged or reduced can be suppressed.

The fourth pipe member 24 includes a linear metal pipe made of stainless steel or the like having a circular cross section.

The fourth pipe member 24 is disposed between the left frame portion 211 of the first pipe member 21 and the third pipe member 23 in an orientation parallel to the left-right direction.

The left end portion of the fourth pipe member 24 is joined to the middle portion of the left frame portion 211 in the up-down direction. The right end portion of the fourth pipe member 24 is joined to the middle portion of the third pipe member 23 in the up-down direction. The fourth pipe member 24 extends between the connecting member and either one of the left and right frames (side frames), and corresponds to a connecting member connecting the respective intermediate portions.

The left and right end portions of the fourth pipe member 24 are compressed and processed flat. In contrast, the joint portion between the left frame portion 211 and the fourth pipe member 24 is also machined, and the outer peripheral surface, that is, the rear portion of the pipe peripheral surface is flattened. Similarly, the joint between the third pipe member 23 and the fourth pipe member 24 is also machined, and the outer peripheral surface, that is, the rear portion of the pipe peripheral surface is flattened.

By these, the fourth pipe member 24 is joined to the first pipe member 21 and the third pipe member 23 with high strength by joining the flat surfaces to each other.

The fourth pipe member 24 is fixed in a state of being positioned on the left side of the third pipe member 23 inside the pipe frame 20 in the left-right direction. As a result, the seat back frame 100 can be provided with rigidity against bending stress about the vertical axis in the left side region of the third pipe member 23 inside the pipe frame 20.

Further, the left-right width of the right region of the third pipe member 23 inside the pipe frame 20 is narrower than the left region. Therefore, the right side region can ensure sufficient rigidity with respect to bending stress about the vertical axis by the upper frame portion 213 of the first pipe member 21 and the second pipe member 22.

On the other hand, the left-right width of the left region of the pipe frame 20 is wider than the left region. Therefore, in addition to the upper frame portion 213 and the second pipe member 22, high rigidity is ensured by the fourth pipe member 24.

Further, by the fourth pipe member 24, the deflection in which the interval between the left frame portion 211 and the third pipe member 23 in the pipe frame 20 is enlarged or reduced can be suppressed.

[ Panel frame ]

As shown in fig. 1 to 3, the panel frame 30 is disposed on the rear side of the pipe frame 20.

The panel frame 30 is a metal plate made of stainless steel, aluminum alloy, or the like. The panel frame 30 has a substantially rectangular plate surface shape in front view. The panel frame 30 has an up-down width and a left-right width substantially equal to those of the pipe frame 20. Thus, the panel frames 30 are integrally joined in a state where the pipe frames 20 are hardly protruded and overlapped with respect to the front-rear direction.

As shown in fig. 2, the panel frame 30 has a peripheral wall-shaped flange 301 standing forward and having a low height formed over substantially the entire periphery of the outer edge portion thereof. A part of the flange 301 is removed by cutting or the like. The flange 301 provides rigidity to the panel frame 30 to maintain the planar shape as a whole.

As shown in the two-dot chain line of fig. 2, the panel frame 30 may divide the flat surface thereof into a plurality of regions including a first portion P1, a second portion P2, a third portion P3 and a fourth portion P4.

The first portion P1 is a region surrounded by the right frame portion 212, the upper frame portion 213, the second pipe member 22, and the third pipe member 23 of the first pipe member 21 in front view of the panel frame 30. The first portion P1 is located rearward of a seated person sitting in the center seat in a state where the seatback frame 100 is fitted into a bench seat of a three-seat.

The second portion P2 is a region surrounded by the left frame portion 211, the upper frame portion 213, the second pipe member 22, and the third pipe member 23 of the first pipe member 21 in front view of the panel frame 30. The second portion P2 is located rearward of a seated person sitting on the left side seat in a state where the seatback frame 100 is fitted into the bench seat of the three-person seat.

The third portion P3 is a region located behind the third pipe member 23 in front view of the panel frame 30.

The fourth portion P4 is a portion located rearward of the first pipe member 21 and the second pipe member 22 in front view of the panel frame 30. The fourth portion P4 corresponds to the entire periphery of the outer edge portion of the panel frame 30.

When the rearmost surface is the reference surface, the panel frame 30 includes a plurality of first reinforcing portions 311 as protruding portions that protrude forward in a band shape with respect to the reference surface in the first to third portions P1 to P3. The first reinforcing portion 311 is recessed forward when viewed from the rear surface side.

The plurality of first reinforcing portions 311 also include reinforcing portions having different vertical heights or lateral widths, but are each formed in a bead shape along the vertical direction.

By providing the first reinforcement portion 311 that bulges forward in the vertical direction as described above, high rigidity can be imparted to the panel frame 30 with respect to bending stress about the left-right direction orthogonal to the longitudinal direction of the first reinforcement portion 311.

In the following description, when referred to as a "reinforcing portion", a portion or a member having rigidity higher than that of a flat plate by a three-dimensional structure such as a ridge, a frame, a convex portion, or a bent portion is shown.

In the first portion P1, three vertically long first reinforcing portions 311 are formed in a left-right arrangement. Of them, the centrally located first reinforcing portion 311 is wider than the first reinforcing portions 311 on both sides. The centrally located first reinforcement portion 311 is formed with a plurality of circular through holes 311a arranged at uniform intervals along the upper and lower sides. The plurality of through holes 311a realizes the weight reduction of the panel frame 30. Further, since the through holes 311a are formed in the plane of the bulging region of the first reinforcement portion 311, the first reinforcement portion 311 itself is reinforced so as not to cause a decrease in rigidity due to the through holes 311a.

Four first reinforcing portions 311 are formed in the second portion P2 in a left-right arrangement. The first reinforcing portion 311 located at the far right has a short vertical height, and is formed below the mounting position of the support bracket 40 of the webbing winding device B. The first reinforcement portion 311 is also formed with a plurality of through holes 311a arranged vertically.

The left two first reinforcing portions 311 are separated vertically by an opening 32 described later. In addition, a plurality of through holes 311a are formed in the two first reinforcement portions 311 so as to be aligned vertically.

A first engagement reinforcement 312 that engages the rear surface side of the support bracket 40 of the webbing retractor B is formed at the right end portion in the second portion P2 and above the first reinforcement 311 that is located at the rightmost position. The first joint reinforcing portion 312 is located at substantially the center of the planar whole of the panel frame 30, and is located slightly above the center and slightly to the left of the center, that is, the left end portion of the second portion P2. The first joint reinforcing portion 312 is located between two second joint reinforcing portions 314, which will be described later, which are vertically arranged at the third portion P3 with respect to the vertical direction.

Therefore, the first joint reinforcement portion 312 is disposed in a range where the rigidity is improved by the two second joint reinforcement portions 314, and the deflection or the directional fluctuation of the support bracket 40 of the webbing take-up device B supported by the first joint reinforcement portion 312 can be suppressed.

The first joining reinforcement portion 312 is a front circular shape and protrudes forward. The first joining reinforcement portion 312 is recessed toward the front as viewed from the rear surface side.

The first joining reinforcement portion 312 has a circular flat surface at the center, the flat surface being located at the forefront. The periphery of the first joining reinforcement portion 312 is inclined so that the amount of projection in the forward direction increases as the flat surface approaches the center. The front view of the first joining reinforcement portion 312 is not limited to a circular shape, but may be a rectangular shape or a polygonal shape, but a circular shape is most easily machined.

Further, the first joining reinforcement portion 312 may be formed in a spherical shape. In this case, a flat surface is also preferably provided at the center.

The flat surface of the center of the first engagement reinforcement 312 engages the rear surface of the support bracket 40 of the webbing winding device B.

Since the first joint reinforcing portion 312 has a concave-convex structure with respect to the plate surface of the panel frame 30, the rigidity of the first joint reinforcing portion 312 and the periphery thereof increases. Therefore, the webbing winding device B is firmly supported via the support bracket 40. Further, when the load is received from the webbing B1 by the webbing winding device B, the first engagement reinforcing portion 312 can suppress the deflection or deformation of the periphery thereof.

A substantially rectangular opening 32 is formed in the second portion P2 so as to extend forward and backward and slightly below the middle in the vertical direction. A latch member 17 is provided on the front surface side of the periphery of the opening 32.

The latch member 17 is a member for mounting the child seat to a seat including the seat back frame 100. The latch member 17 has a rod-shaped portion capable of engaging a hook portion included in the child seat. The fastening member 17 includes a substantially U-shaped steel wire having high hardness, and includes a cross bar portion and a pair of right and left vertical bar portions extending downward from both end portions thereof. The left vertical rod portion is shorter in length than the right vertical rod portion, and is joined to the outer peripheral surface of the left frame portion 211 of the first pipe member 21, that is, the pipe peripheral surface. The right vertical rod portion is long enough to reach the second pipe member 22, and the lower end portion thereof is joined to the flat portion 221 of the second pipe member 22. The latch member 17 is also joined to the front surface side of the peripheral edge of the opening 32, and to the left and right sides of the opening 32.

The latch member 17 is disposed such that the cross bar portion transversely crosses the middle portion in the up-down direction of the opening 32 on the front surface side of the opening 32 of the second portion P2 of the panel frame 30. That is, the opening 32 is a hiding hole for avoiding interference of the panel frame 30 when the hook of the child seat is locked.

The opening 32 is located at a middle portion of the two first reinforcement portions 311 in the vertical direction so as to separate the two first reinforcement portions 311.

Around the opening 32, a peripheral reinforcing portion 313 is formed so as to bulge forward so as to surround the opening 32. The peripheral reinforcement portion 313 is recessed toward the front as viewed from the rear surface side.

Therefore, the peripheral reinforcement portion 313 is reinforced so as not to cause a decrease in rigidity due to the opening portion 32 penetrating the panel surface.

Two first reinforcing portions 311 are formed in a left-right arrangement in a lower portion of the third portion P3.

Further, on the upper side of the two first reinforcing portions 311 in the third portion P3, two second reinforcing portions 314 that join the tube peripheral surfaces of the third tube members 23 of the tube frame 20 are formed in an up-down arrangement.

The third pipe member 23 joined to the second joining reinforcement 314 is disposed so as to pass between the two first reinforcement portions 311 in a plan view. At this time, the front protruding height of the two first reinforcing portions 311 may be set to a height at which they abut on the pipe peripheral surface of the third pipe member 23, and may be joined to each other. Thereby, the third pipe member 23 is held between the two first reinforcing portions 311. Thus, the inclination of the third pipe member 23 is suppressed, and the deflection when a load is applied to the seat back frame 100 can be suppressed.

The upper and lower second joining reinforcement portions 314 are each circular in front view and protrude forward. The second joining reinforcement portion 314 is recessed toward the front as viewed from the rear surface side. Further, each second joint reinforcing portion 314 has a larger diameter than the first joint reinforcing portion 312.

Each of the second joining reinforcing portions 314 also has a circular flat surface in the center, which protrudes to the forefront side. The periphery of each second joining reinforcing portion 314 is inclined so that the amount of projection in the forward direction increases as the flat surface approaches the center. The front shape of each second joining reinforcement 314 is not limited to a circular shape, and may be a rectangular shape or a polygonal shape. The second joining reinforcement portions 314 may be formed in a spherical shape, but a flat surface is preferably provided at the center.

As described above, the flat surface at the center of each second joint reinforcing portion 314 joins the rear portions of the tube peripheral surfaces at the upper and lower two places of the third tube member 23. At this time, the joint portion at the rear of the tube peripheral surface of the third tube member 23 may be pressed to form a flat surface. This allows the flat surfaces to be joined together, and the second joint reinforcing parts 314 and the third pipe member 23 can be more firmly joined together.

Further, the second joint reinforcing portion 314 is provided in two along the upper and lower sides, and therefore holds the third pipe member 23 in two upper and lower sides. Therefore, the third pipe member 23 can be firmly held in the vertically parallel posture. With this, the deflection of each portion of the pipe frame 20 in the up-down or left-right direction in the oblique direction can be effectively suppressed.

Further, since each second joint reinforcing portion 314 has a concave-convex structure with respect to the plate surface of the panel frame 30, the rigidity of each second joint reinforcing portion 314 and the periphery thereof is improved. Therefore, the third pipe member 23 can be firmly supported, and the surrounding deflection or deformation can be suppressed.

The fourth portion P4 is a rectangular frame-shaped region surrounding the first to third portions P1 to P3. The upper plane and the lower plane of the fourth portion P4 are located forward with respect to the reference plane. Therefore, the step reinforcement portion 315 is formed in the left-right direction in the vicinity of the boundary between the upper portion of the fourth portion P4 and the other portion P1 to P3 and in the vicinity of the boundary between the lower portion of the fourth portion P4 and the other portion P1 to P3. Since the upper and lower step reinforcing portions 315 extend in the left-right direction, high rigidity can be imparted to the panel frame 30 with respect to bending stress about the vertical axis.

Further, third joint reinforcing portions 316 are formed on the left and right sides of the upper end portion of the fourth portion P4, respectively. The upper end of the fourth portion P4 is located further forward than the reference plane, but each third joint reinforcing portion 316 further protrudes forward therefrom. The third joint reinforcing portion 316 is recessed forward when viewed from the rear surface side.

Each third joint reinforcing portion 316 has an inclined surface which is rectangular in front view and undulates obliquely upward toward the front with respect to the periphery. In each third joint reinforcing portion 316, the inclined surface is joined to the outer peripheral surface of the upper frame portion 213 of the first pipe member 21, that is, the pipe peripheral surface, to fix the first pipe member 21.

The third joint reinforcing portion 316 has a concave-convex structure with respect to the plate surface of the panel frame 30, and therefore the rigidity of the third joint reinforcing portion 316 and its surroundings increases. Further, since the third joint reinforcing portion 316 is an inclined surface, the upward and downward movement of the first pipe member 21 can be suppressed.

Further, fourth joint reinforcing portions 317 are formed at the lower portion of the left end portion and the upper and lower portions of the right end portion of the fourth portion P4, respectively. Each fourth joint reinforcing portion 317 protrudes forward. The fourth joint reinforcing part 317 is recessed forward when viewed from the rear surface side.

The fourth joining reinforcing member 317 has a substantially rectangular flat surface protruding to the forefront side at the center.

The flat surface of each fourth joint reinforcing portion 317 engages the outer peripheral surface of the left frame portion 211 or the right frame portion 212 of the first pipe member 21, that is, the pipe peripheral surface. The fourth joint reinforcing portion 317 has a concave-convex structure with respect to the plate surface of the panel frame 30, and therefore the fourth joint reinforcing portion 317 and its surroundings have high rigidity.

The outer peripheral surface of the first pipe member 21, that is, the joint portion with the fourth joint reinforcing portion 317 in the pipe peripheral surface may be pressed to form a flat surface. This can improve the bonding strength between the two members. With this, the deflection of the pipe frame 20 and the panel frame 30 can be suppressed.

Further, at the lower end portion of the fourth portion P4, fifth joint reinforcing portions 318 are formed at three positions in a left-right arrangement. Each fifth joint reinforcing portion 318 protrudes forward. The fifth joint reinforcing portion 318 is recessed forward when viewed from the rear surface side.

The fifth joining reinforcement portion 318 has a substantially rectangular flat surface in the center, which protrudes to the forefront side.

The flat surface of each fifth joint reinforcement 318 joins the outer peripheral surface of the second pipe member 22, that is, the pipe peripheral surface. Since the fifth joint reinforcement 318 has a concave-convex structure with respect to the plate surface of the panel frame 30, the rigidity of the fifth joint reinforcement 318 and the periphery thereof increases.

The joint portion with the fifth joint reinforcing portion 318 in the pipe peripheral surface of the second pipe member 22 may be pressurized to form a flat surface. This can improve the bonding strength between the two members. With this, the deflection of the pipe frame 20 and the panel frame 30 can be suppressed.

Further, in the lower end portion of the fourth portion P4, in a range immediately below the first portion P1, a wavy connecting portion 33 is formed by a substantially inverted U-shaped notch so that an inner portion thereof is wavy obliquely upward toward the front, in two places arranged in the left-right direction. In each of the undulating connection portions 33, an inclined surface undulating toward the upper side is joined to the pipe peripheral surface of the second pipe member 22, and the second pipe member 22 is fixed.

A substantially rectangular notch 34 is formed in the center of the upper end portion of the fourth portion P4 in the lateral direction from the upper edge portion toward the lower side. The notch 34 reaches the upper ends of the second portion P2 and the third portion P3.

The first belt guide 15 and the second belt guide 16 are mounted to the upper frame portion 213 of the first tube member 21 in a configuration that is forward of the notch 34.

The substantially rectangular notch 34 serves as a avoiding portion for avoiding interference with the upper end portion of the panel frame 30 when passing the seat belt or the member attached to the seat belt through the first belt guide 15 and the second belt guide 16.

Fig. 4 is a partial perspective view of the upper center of the seat back frame 100.

As described above, the upper plane of the fourth portion P4 is located forward of the reference plane, but the left and right sides of the notch 34 are second reinforcing portions 319 including convex portions protruding rearward with respect to the upper plane. The second reinforcing portion 319 is recessed rearward as viewed from the front surface side.

The second reinforcing portion 319 maintains the rigidity around the notch 34 high, and suppresses the rigidity from decreasing due to the notch 34.

Further, in the second reinforcement portion 319, the flat plate surface is located further rearward than the upper plane of the fourth portion P4. The notch 34 and the second reinforcing portion 319 partially remove the flange 301 formed on the outer edge of the panel frame 30. With these structures, the flat surface of the second reinforcement portion 319 is spaced rearward from the tube peripheral surface of the upper frame portion 213 of the first tube member 21. The second reinforcing portion 319 functions as a avoiding portion that avoids interference with the first belt guide 15 and the second belt guide 16 joined to the upper frame portion 213 by a structure that is away rearward.

[ Support bracket for seat belt winding device ]

Fig. 5 is an enlarged front view of the upper end center portion of the seat back frame 100.

As shown in fig. 1 to 5, the support bracket 40 of the webbing winding device B is provided slightly above the center portion of the front surface of the panel frame 30.

The support bracket 40 is formed by metal plate processing of a metal plate such as stainless steel or aluminum alloy. The support bracket 40 has a support portion 41 that fixedly supports the webbing winding device B and a coupling portion 42 that engages with the third pipe member 23.

The support portion 41 is flat plate-shaped and has insertion holes for the bolts 43 formed therein, and the heads of the bolts 43 inserted from behind are fixed to the rear surface side of the support portion 41 by welding. The webbing winding device B is fixed to the support portion 41 by a shaft portion of a bolt 43 protruding forward and a nut not shown.

In the support portion 41, the rear surface thereof is bonded to the flat surface of the first bonding reinforcement 312. The support portion 41 has a gap formed with respect to the panel frame 30 at a portion other than the joint portion with the first joint reinforcing portion 312.

The support bracket 40 is located at the left side of the third pipe member 23.

The connecting portion 42 extends from the right end portion of the support portion 41 toward the right oblique front side. The extending end portion of the connecting portion 42 grips the third pipe member 23 so as to be wound around a front side portion of the pipe peripheral surface of the third pipe member 23. The rear surface of the extended end portion of the coupling portion 42 is joined to the third pipe member 23.

Further, a reinforcing rib 421 that bulges toward the front side is formed at each of the upper and lower end portions of the connecting portion 42 along the extending direction. These reinforcing portions 421 can impart high rigidity to the connecting portion 42 with respect to bending stress about an axis in the up-down direction orthogonal to the extending direction.

The support bracket 40 supports not only the seatbelt retractor B but also the coupling portion 42 contributes to an improvement in the coupling strength between the panel frame 30 and the pipe frame 20. Further, the coupling portion 42 suppresses the deflection or tilting of the third pipe member 23, and contributes to an improvement in rigidity of the seat back frame 100.

Further, since the support bracket 40 is supported by the third pipe member 23 via the connecting portion 42, it is no longer necessary to use support frames extending over both the left and right end portions of the pipe frame 20 as in the conventional art, and the support frames can be omitted. Thus, the foreign body sensation caused by the support frame felt by the seated person of the bench seat can be eliminated.

Further, since the first joint reinforcing portion 312 of the support bracket 40 is formed in a convex shape, both the support of the support bracket 40 and the improvement of the rigidity of the panel frame 30 can be achieved.

The webbing winding device B is fixed to the support bracket 40 in a state in which the cylindrical body portion is in the lateral direction.

The webbing winding device B is provided with a winding shaft connected to a winding spring inside the body, and is capable of winding the webbing B1. The webbing B1 can be drawn out from the upper portion of the body by the webbing winding device B, and the winding spring always imparts tension to the drawn-out webbing B1 to the body. Further, the webbing winding device B incorporates a blocking mechanism that blocks abrupt extraction of the webbing B1.

The seat belt retractor B has a seat belt B1 outlet formed in an upper portion of a body thereof, and a plate-like insertion guide portion B2 of the seat belt B1 provided with a slit in a close upper side thereof. The insertion guide B2 guides the webbing B1 that is released from the release port of the webbing winding device B upward.

First and second belt guides

Fig. 6 is a cross-sectional view taken along line A-A of fig. 1.

As shown in fig. 4 to 6, the first belt guide 15 and the second belt guide 16 each guide the webbing B1 paid out from the webbing winding device B in a predetermined paying-out direction by inserting the webbing.

The first belt guide 15 and the second belt guide 16 are each the same member formed by bending a hard wire into the same shape.

The first belt guide 15 and the second belt guide 16 are each mounted at a laterally central portion in the upper frame portion 213 of the first tube member 21. As shown in fig. 5 and 6, the first belt guide 15 and the second belt guide 16 are arranged in the right-left direction so as to substantially coincide with the discharge opening of the webbing winding device B.

The first and second belt guides 15, 16 comprise steel wires formed in a generally U-shape.

The first belt guide 15 has a pair of arm portions 151 including one end portion and the other end portion of the wire extending in the same direction, and an insertion portion 152 connecting the pair of arm portions 151. The insertion portion 152 is connected from one arm portion 151 to the other arm portion 151, and forms an annular portion between them for inserting the seat belt B1.

The second belt guide 16 has a pair of arm portions 161 including one end portion and the other end portion of the wire extending in the same direction, and an insertion portion 162 connecting the pair of arm portions 161. The insertion portion 162 also forms an annular portion between one of the arm portions 161 and the other arm portion 161.

The pair of arms 151 of the first belt guide 15 and the pair of arms 161 of the second belt guide 16 are each curved in concentric circular arcs. The arm portions 151 and 161 are joined to the pipe circumferential surface of the middle portion in the lateral direction of the upper frame portion 213 of the first pipe member 21. The inner diameter of each arm 151, 161 is substantially identical to the outer diameter of the upper frame 213. Therefore, the inner peripheral sides of the arm portions 151 and 161 are in contact with the pipe peripheral surface of the upper frame portion 213 over a wide range, and can be firmly joined.

In addition, the pair of arms 151 of the first belt guide 15 are engaged with the pair of arms 161 of the second belt guide 16 so as to be slightly offset in the left-right direction so as not to interfere with each other.

The first belt guide 15 extends from the upper portion of the tubular peripheral surface of the upper frame portion 213 toward the front and slightly downward side at the left-right direction center portion of the upper frame portion 213 on the insertion portion 152 side.

The second belt guide 16 extends from the lower portion of the tubular peripheral surface of the upper frame portion 213 toward the front and lower side on the side of the insertion portion 162 in the central portion of the upper frame portion 213. The insertion portion 162 of the second belt guide 16 is inclined more toward the lower side than the insertion portion 152 of the first belt guide 15.

Further, as shown in fig. 6, the extended end portion of the insertion portion 152 of the first belt guide 15 extends to the front side than the center B3 of the webbing winding device B.

Further, the extended end portion of the insertion portion 162 of the second belt guide 16 extends to the front side of the panel frame 30, but does not reach the front side of the center B3 of the webbing winding device B.

The center B3 of the webbing winding device B indicates the center position when the webbing winding device B has a substantially cylindrical shape. The position of the rotation center of the spool of the webbing B1 may be set to be the center B3.

In the case of the present embodiment, the positional relationship in the front-rear direction between the extending end portion of the insertion portion 152 of the first belt guide 15 and the extending end portion of the insertion portion 162 of the second belt guide 16 is established regardless of which is set as the center B3.

When the webbing B is provided to the seat back frame 100, the webbing B1 paid out from the webbing B must be temporarily guided to a position above the shoulder of the occupant, and then bent to be guided obliquely downward toward the front.

In the second belt guide 16, the insertion portion 162 is disposed as described above, so that the webbing B1 that is released upward from the release port provided at the rear portion of the upper end of the webbing winding device B can be easily inserted from behind toward the front. Since the insertion portion 162 has a round rod portion at the distal end portion thereof in the left-right direction, the seat belt B1 inserted inside can be guided along the outer peripheral surface of the round rod portion to bend the approach forward.

The first belt guide 15 also has a round bar portion in the left-right direction at the front end portion of the insertion portion 152. In the first belt guide 15, the insertion portion 152 is disposed above and in front of the insertion portion 162 of the second belt guide 16. Therefore, the insertion portion 152 of the first belt guide 15 can guide the seat belt B1 guided forward by the insertion portion 162 to bend the approach downward along the round bar portion from a position higher than the insertion portion 162.

Thus, the seat belt B1 can be guided appropriately to the occupant by the first belt guide 15 and the second belt guide 16.

Headrest frame

As shown in fig. 1 and 3, the headrest frames 11 and 12 are provided on the left and right sides of the upper frame portion 213 of the first pipe member 21.

The headrest frames 11, 12 are each formed of a wire having a relatively large outer diameter. The headrest frames 11 and 12 include steel wires formed in a substantially U-shape, and a pair of rod-shaped portions extending upward are bent to be folded back toward the lower side. In the headrest frames 11 and 12, the folded rod-shaped portions are joined to the front side portions of the outer peripheral surface of the upper frame portion 213.

In the left headrest frame 11, the vicinities of the lower ends of the pair of folded rod-shaped portions are bent rearward, and the rear portions above the bent portions are joined to the upper frame portion 213. The joint portion with the headrest frame 11 in the upper frame portion 213 may also be machined flat along the rod-like portion of the headrest frame 11.

In a state of being joined to the upper frame portion 213, the lower end portions of the pair of rod-shaped portions of the headrest frame 11 are in contact with the front surface side of the panel frame 30. The lower end portions of the pair of rod-shaped portions of the headrest frame 11 may also be joined to the front surface of the panel frame 30.

In the right headrest frame 12, the lower end portions of the pair of folded rod-shaped portions are each curved in an arc shape rearward, and the inner peripheral sides of the curved arc-shaped portions are joined to the outer peripheral surfaces of the upper frame portions 213. The inner diameter of the curved portion of the headrest frame 12 substantially matches the outer diameter of the upper frame portion 213. Therefore, the lower end portion of the headrest frame 12 can be joined to the outer peripheral surface of the upper frame portion 213 over a wide range.

The upper portions of the headrest frames 11 and 12 are finally covered with a cushion material including a cushion material, and further covered with a skin material such as cloth from above. And, a headrest is constituted by them.

The headrest frame 11 and the headrest frame 12 have different shapes of the pair of rod-shaped portions, but may have a shape corresponding to any one of them.

The headrest frames 11 and 12 may be inserted into a tubular support member coupled to the upper frame portion 213, instead of being directly coupled to the upper frame portion 213.

[ Armrest bracket ]

The armrest brackets 13 and 14 are each formed of a single metal plate by press working.

The left armrest bracket 13 includes a bottom end portion joined to the front side of the outer peripheral surface near the lower end portion of the third pipe member 23, a support arm portion extending forward from the bottom end portion, and a flange portion formed along the bottom end portion and the outer edge of the support arm portion.

The right arm rest bracket 14 includes a bottom end portion joined to the front side of the outer peripheral surface near the lower end portion of the right frame portion 212 of the first pipe member 21, a support arm portion extending forward from the bottom end portion, and a flange portion formed along the bottom end portion and the outer edge of the support arm portion.

The left and right arm rest brackets 13, 14 have arm rest support holes formed in the same positions at the respective distal ends when viewed from the left-right direction. The left and right arm rest brackets 13, 14 rotatably support the lower end portions of the arm rest, not shown, from the left and right sides.

[ Mounting bracket of locking device ]

The mounting bracket 50 supports a locking device, not shown.

In the seat back frame 100, the lower end portion is rotatably supported by the vehicle body about an axis along the left-right direction. The seat back frame 100 is generally set to a raised state and is set to a tilted state toward the front as needed.

The lock device can lock a lock catch including an oblong steel wire extending rightward from the vehicle body side to maintain the seat back frame 100 in the rolled state. The locking device can switch between locking and unlocking of the lock catch by an external operation.

As shown in fig. 1 and 3, the mounting bracket 50 is disposed on the left end upper front surface side of the seatback frame 100. The mounting bracket 50 is coupled to the left frame portion 211 of the first pipe member 21 of the pipe frame 20 and the front surface of the panel frame 30.

The mounting bracket 50 has an open cross-sectional structure having a substantially U-shaped horizontal cross-section, and is joined with the open side facing the front surface side of the panel frame 30. The mounting bracket 50 is formed by press working a single metal plate such as stainless steel or aluminum alloy.

The mounting bracket 50 has a locking device mounting surface 51 on the left side. A notch 52 is formed in the rear edge of the mounting surface 51 toward the front.

When the seat back frame 100 is rotated rearward to be lifted, the lock catch provided on the vehicle body side moves relatively forward and is locked to the lock device. The notch 52 serves as a avoiding portion of the lock catch that moves relatively forward. In addition, a notch 35 corresponding to the notch 52 is also formed in the left edge portion of the panel frame 30, and similarly serves as a latch avoiding portion.

The mounting bracket 50 may include a flange portion having a plane facing the front surface of the panel frame 30 and a flange portion having a curved surface facing the outer peripheral surface of the left frame portion 211. By setting these as the joint surfaces, the mounting bracket 50 can be more firmly joined to the pipe frame 20 and the panel frame 30.

[ Installation bracket ]

As shown in fig. 1 and 3, a left end portion of a front surface side lower portion of the seatback frame 100 is provided with a setting bracket 18.

The setting bracket 18 is joined to the lower left corner of the panel frame 30 and the front side of the lower end outer periphery of the left frame portion 211 of the first pipe member 21.

The setting bracket 18 is formed by press working from a single metal plate.

The installation bracket 18 has a flat surface portion joined to the panel frame 30 side, and a curved surface portion erected forward from the flat surface portion and joined to the outer peripheral surface of the left frame portion 211. By these, the mounting bracket 18 can be brought into contact with the panel frame 30 and the left frame portion 211 over a large area, and the bonding strength can be maintained high.

Ribs as reinforcing structures are formed on the upper and lower edges of the mounting brackets 18 so as to stand forward from the plate surface.

Two male nuts are fixedly provided by projection welding in an up-down arrangement on the front surface of the planar portion where the bracket 18 is provided. Corresponding to the screw holes of the male nuts, through holes are formed in the panel frame 30 and the planar portion of the mounting bracket 18. Each of the male nuts is screwed into a bolt for fixation when fixing the seat back frame 100 to the vehicle body.

[ Technical Effect of the first embodiment ]

The seat back frame 100 has a first belt guide 15 and a second belt guide 16. Therefore, even when a large load is applied to the seat belt B1, the load applied from the seat belt B1 can be dispersed to the first belt guide 15 and the second belt guide 16, and both the support rigidity of the belt guides 15 and 16 and the support rigidity of the seat belt B1 can be improved with a simple structure.

In the seat back frame 100, the first belt guide 15 and the second belt guide 16 are attached along the tube peripheral surface of the upper frame portion 213 of the tube frame 20. Thus, the belt guides 15 and 16 can be joined to the tube circumferential surface over a large area, and a high joining strength can be obtained, so that a larger load from the seat belt B1 can be tolerated.

Further, by attaching the belt guides 15 and 16 along the circumferential surface of the tube, when a load is applied in the extending direction of the insertion portion 152 of each belt guide 15 and 16, a force is easily applied to the attachment surface of the upper frame portion 213 in a direction along the circumferential surface, that is, the attachment surface, rather than in a direction along which the attachment surface is peeled off. Therefore, the belt guides 15 and 16 are less likely to be separated from the tube frame 20, and the strength against the load can be improved.

Further, by forming the arm portions 151 and 161 of the belt guides 15 and 16 into an arc shape along the circumferential surface of the tube, the arm portions 151 and 161 themselves function as hooks. Therefore, a larger load from the seat belt B1 can be tolerated.

In the seat back frame 100, the extending end portions of the insertion portion 152 of the first belt guide 15 and the extending end portions of the insertion portion 162 of the second belt guide 16 are located on the front side and the rear side with respect to the center B3 of the webbing winding device B, respectively.

Therefore, when the belt is discharged from the webbing winding device B toward the front side of the seat back frame through the second belt guide 16 and the first belt guide 15, the belt guides 15 and 16 can be guided satisfactorily.

That is, the webbing B1 is paid out upward from the webbing take-up device B, and is further paid out obliquely downward toward the front after being folded back. Therefore, the webbing B1 can be guided to change its route stepwise from the insertion portion 162 of the second belt guide 16 toward the insertion portion 152 of the first belt guide 15, and the webbing B1 can be smoothly led out.

Further, by the arrangement of the insertion portions 152 and 162, when a load is applied from the seat belt B1, the load applied to each belt guide can be appropriately dispersed while suppressing the deviation. Thus, the mounting strength and durability of each belt guide 15, 16 with respect to the load can be improved.

Further, since the insertion portion 162 of the second belt guide 16 is located further rearward than the center B3 of the webbing winding device B, when a large load is applied to the webbing B1, the load of pulling the webbing winding device B from the support bracket 40 by the webbing B1 can be reduced. Thus, the mounting strength and durability of the webbing winding device B can be improved.

In the seat back frame 100, the extending end portion of the insertion portion 152 of the first belt guide 15 extends toward the front side from the upper portion of the tubular peripheral surface of the upper frame portion 213, and the extending end portion of the insertion portion 162 of the second belt guide 16 extends toward the front side from the lower portion of the tubular peripheral surface of the upper frame portion 213.

Therefore, when a load is applied to the webbing B1, the force applied to each belt guide 15, 16 can be directed in the direction along the tube peripheral surface rather than in the direction that promotes separation from the tube peripheral surface of the upper frame portion 213, and the strength against the load can be improved.

Further, since the first belt guide 15 and the second belt guide 16 include members having the same shape, the ease of manufacture and the reduction of manufacturing cost can be achieved by the commonalization of the parts.

The seat back frame 100 further includes a second reinforcing portion 319, and the second reinforcing portion 319 serves as a avoiding portion with respect to the first and second belt guides 15 and 16 provided in the upper frame portion 213, so that interference between the respective belt guides 15 and 16 and the panel frame 30 can be avoided. The avoidance portion is easily formed by the concavity and convexity of the panel material such as the panel frame 30, so that the installation position of each belt guide 15, 16 is easily ensured, and the degree of freedom in the arrangement of the installation position can be maintained high.

In the seat back frame 100, the panel frame 30 is joined to the pipe frame 20 at a plurality of locations by the second joining reinforcement 314, the third joining reinforcement 316, the fourth joining reinforcement 317, and the fifth joining reinforcement 318 protruding forward. The panel frame 30 is formed with a gap in a portion other than the joint portions protruding forward with respect to the pipe frame 20 so as to be spaced forward and backward. Thus, the occurrence of abnormal sounds such as a tremolo generated between the panel frame 30 and the pipe frame 20 can be suppressed.

Second embodiment

In the second embodiment, a seat back frame 100A including a pipe frame 20A is exemplified, and a part of the structure of the pipe frame 20A is different from that of the pipe frame 20. Fig. 7 is a front view of the seat back frame 100A.

The same reference numerals are given to the same components as those of the seat back frame 100 described above for the seat back frame 100A, and overlapping description thereof will be omitted. The seat back frame 100A will mainly be described in terms of the points different from the seat back frame 100.

The seatback frame 100A has a panel frame 30 and a pipe frame 20A provided on the front surface side thereof.

The pipe frame 20A is different from the pipe frame 20 in that a third pipe member 23A is included instead of the third pipe member 23 and a fifth pipe member 25A is newly included.

The third pipe member 23A includes a metal pipe having a circular cross section and made of stainless steel or the like. The outer diameter of the third pipe member 23A is equal to the third pipe member 23. The third pipe member 23A is disposed substantially along the up-down direction inside the pipe frame 20A.

The third pipe member 23A corresponds to a connecting member that connects the middle portion of the upper frame portion 213 and the middle portion of the second pipe member 22 that is the lower frame.

However, the connection position of the third pipe member 23A to the upper frame portion 213 is different from the aforementioned third pipe member 23. The third pipe member 23A is located at a position spaced rightward from the coupling position of the upper frame portion 213 so as to avoid the first and second belt guides 15 and 16. The connection position of the third pipe member 23A with respect to the frame portion 213 is a position intermediate the connection positions of the first and second belt guides 15, 16 and the connection position of the headrest frame 12.

The connection position of the third pipe member 23A to the second pipe member 22 on the lower end side is the same as that of the third pipe member 23. Therefore, the third pipe member 23A has two bent portions 231A, 232A at the upper portion, and the connection position with respect to the upper frame portion 213 is changed.

The lower bent portion 231A is located slightly above the position of engagement with the upper second engagement reinforcing portion 314 in the third pipe member 23A. The third pipe member 23A has a linear shape at a portion lower than the bent portion 231A and is oriented parallel to the vertical direction. The bent portion 231A is inclined obliquely upward to the right at a portion higher than the bent portion.

The upper bent portion 232A is located near the upper end portion of the third pipe member 23A. The upper bent portion 232A is inclined obliquely upward to the left than the upper portion thereof. The curved portion 232A is oriented parallel to the vertical direction in a state in which a portion above the curved portion 232A is corrected.

The upper end portion of the third pipe member 23A is joined to the upper frame portion 213 at a position spaced rightward from the joining position by two bent portions 231A, 232A bypassing the first and second belt guides 15, 16.

The upper and lower end portions of the third pipe member 23A are also compressed and flattened, so that they are bonded to the upper frame portion 213 and the second pipe member 22 with high strength.

The third pipe member 23A has two bent portions 231A and 232A, but each is provided so as to be located further upward than the upper second joint reinforcing portion 314. Therefore, the third pipe member 23A can be joined to the two second joining reinforcing portions 314 without applying a change to the panel frame 30. Further, the coupling portion 42 can be coupled without changing the support bracket 40. Further, the fourth pipe member 24 can be joined without changing the fourth pipe member 24.

Thus, the high-strength connection state of the pipe frame 20A and the panel frame 30 is maintained, and the rigidity improvement effect of the seat back frame 100A by the connection between the pipe frame and the panel frame is maintained.

The fifth pipe member 25A includes a metal pipe having a circular cross section and made of stainless steel or the like. The fifth pipe member 25A is disposed in an obliquely upward direction inside the pipe frame 20A.

The fifth pipe member 25A connects a portion of the fourth pipe member 24 slightly to the right of the middle portion and a boundary portion between the left frame portion 211 and the upper frame portion 213, which is an upper left corner portion of the first pipe member 21.

The fifth pipe member 25A functions as an inclined strut frame connecting the vicinity of the corner and the vicinity of the corner in a substantially diagonal arrangement of a rectangular frame including the first pipe member 21, the third pipe member 23, and the fourth pipe member 24.

Both end portions of the fifth pipe member 25A are compressed and flattened, and are joined to the rear portion of the outer peripheral surface of the fourth pipe member 24 and the rear portion of the outer peripheral surface of the first pipe member 21 with high strength.

The fifth pipe member 25A is a pipe member having a smaller outer diameter than the fourth pipe member 24 or the like. This allows the tube frame 20A to be placed in a narrow space between the panel frame 30 and the panel frame.

Further, the fifth pipe member 25A may be a pipe member having the same outer diameter as the fourth pipe member 24 or the like.

Further, the fifth pipe member 25A may be disposed on the front side in the pipe frame 20A.

In the seatback frame 100A, the third pipe member 23 is bent so as to bypass the first belt guide 15 and the second belt guide 16, and the upper end portion thereof is connected to the upper frame portion 213. Therefore, the mounting positions of the first belt guide 15 and the second belt guide 16 can be appropriately ensured. Further, the third pipe member 23A can be disposed inside the pipe frame 20A regardless of the arrangement of the first belt guide 15 and the second belt guide 16, and the frame strength can be improved similarly to the third pipe member 23.

Further, the third tube member 23A is joined to the upper frame portion 213 at a position spaced apart from the first belt guide 15 and the second belt guide 16. Therefore, other members can be prevented from being intensively coupled to the upper frame portion 213 in a narrow range. Thus, when a load is applied to the seatback frame 100A, the load is prevented from concentrating in a narrow range of the upper frame portion 213, and deformation, breakage, and the like of the upper frame portion 213 are suppressed, so that the durability of the seatback frame 100A can be improved.

Further, since the fifth pipe member 25A is provided in the frame-like portion of the pipe frame 20A in a substantially diagonal strut arrangement, deflection of each structure in the pipe frame 20A in the diagonal direction can be suppressed, and the rigidity of the pipe frame 20A can be improved.

The third pipe member 23A may be made of a linear pipe material having no bent portions 231A and 232A. In this case, the upper and lower end portions may be attached in a direction inclined slightly obliquely upward and rightward so as to be joined to the above-described connection position with respect to the upper frame portion 213 and the connection position with respect to the second pipe member 22, respectively. In this case, the rigidity substantially similar to that of the third pipe member 23A having the bent portions 231A, 232A can be obtained.

However, in this case, it is necessary to change the arrangement of the two second joint reinforcing portions 314, change the shape of the joint surface of the connecting portion 42 of the support bracket 40, and adjust the length of the fourth pipe member 24.

Third embodiment

In the third embodiment, a belt guide 15B different from the first belt guide 15 and the second belt guide 16 is illustrated. Fig. 8 is a perspective view of the belt guide 15B.

The belt guide 15B is a belt guide formed by forming the first belt guide 15 and the second belt guide 16 described above from one steel wire.

The belt guide 15B has the same shape and the same function as the respective portions of the first belt guide 15 and the second belt guide 16 described above. Thus, the same reference numerals are given to the same parts of the belt guide 15B as the first belt guide 15 and the second belt guide 16.

The belt guide 15B is formed by bending a hard wire. The configuration of the belt guide 15B with respect to the upper frame portion 213 corresponds to the configuration of the first belt guide 15 and the second belt guide 16.

The belt guide 15B is formed in two substantially U-shaped portions and has two insertion portions 152, 162, and the two insertion portions 152, 162 are formed at positions at the bottoms of the respective U-shaped portions. Further, the right end portion of the insertion portion 152 and the right end portion of the insertion portion 162 are connected by the arm portion 151 formed in an arc shape. The inner diameter of the arm 151 is substantially equal to the outer diameter of the upper frame 213, and the inner peripheral portion of the arm 151 is joined to the outer peripheral surface of the upper frame 213.

The left end portion of the insertion portion 152 extends rearward and is formed in an arc shape, thereby constituting the other arm portion 151. The arm 151 is also joined to the upper frame 213 in the same manner as the arm 151 described above.

The left end portion of the insertion portion 162 also extends rearward and is formed in an arc shape, thereby configuring the arm portion 161. The arm 161 is also joined to the side of the arm 151 in the upper frame 213, similarly to the arm 151.

In addition, the arm 151 on the right side of the insertion portion 152 in the first belt guide 15 and the arm 161 on the right side of the insertion portion 162 in the second belt guide 16 are shared by one arm 151.

Moreover, strictly speaking, the insertion portion 162 is formed slightly longer than the insertion portion 162 of the second belt guide 16.

The arrangement of the linear portions of the insertion portion 152 and the linear portions of the insertion portion 162 of the belt guide 15B with respect to the upper frame portion 213 is identical to the arrangement of the linear portions of the insertion portion 152 of the first belt guide 15 and the linear portions of the insertion portion 162 of the second belt guide 16, respectively, described above.

Thus, the belt guide 15B functions in the same manner as the first belt guide 15 and the second belt guide 16, and achieves the same technical effects.

Further, since the belt guide 15B includes a single member integrated, it is possible to reduce the number of parts, the manufacturing cost, and the weight.

Fourth embodiment

In the fourth embodiment, a seat back frame 100C including a pipe frame 20C is exemplified, and a part of the structure of the pipe frame 20C is different from that of the pipe frame 20. Fig. 9 is a front view of the seat back frame 100C.

The same reference numerals are given to the same components as those of the seat back frame 100A described above with respect to the seat back frame 100C, and overlapping description thereof will be omitted. The seat back frame 100C will be mainly described as being different from the seat back frame 100A.

The seatback frame 100C has a panel frame 30 and a pipe frame 20C provided on the front surface side thereof.

The tube frame 20C differs from the tube frame 20A in that a third tube member 23C is included in place of the third tube member 23A and first and second belt guides 15C, 16C are included in place of the first and second belt guides 15, 16.

Further, the pipe frame 20C is different from the pipe frame 20A in that the fifth pipe member 25A is not provided.

The third pipe member 23C is different in that the outer diameter of the metal pipe used is smaller than the third pipe member 23A. Thus, the joint position of both end portions of the third pipe member 23C or the bending positions of the two bending portions 231C, 232C of the third pipe member 23C in the pipe frame 20C are the same as the third pipe member 23A.

The first and second belt guides 15C, 16C differ only in that the outer diameter of the steel wire used is greater than the first and second belt guides 15, 16. The first and second belt guides 15C, 16C are identical in shape, configuration, and structure to the first and second belt guides 15, 16.

The outer diameters of the wires of the first and second belt guides 15C, 16C may also be larger than the outer diameter of the metal tube of the third tube member 23C.

The seat back frame 100C including the above-described structure can be reduced in weight as compared with the seat back frame 100A by reducing the diameter of the third pipe member 23C. Further, by omitting the fifth pipe member 25A, further weight reduction is achieved.

Further, the first and second belt guides 15C and 16C further improve the load resistance against the load received from the seat belt B1 by enlarging the outer diameter of the wire used.

The seat back frame 100C is lightweight and has improved load resistance from the seat belt B1, but may be configured to include the first and second belt guides 15 and 16, for example, in the case of being lightweight.

Fifth embodiment

In the fifth embodiment, a seat back frame 100D including a first belt guide 15D is illustrated, and a part of the structure of the first belt guide 15D is different from that of the first belt guide 15. Fig. 10 is a front view of the seat back frame 100D.

The same reference numerals are given to the same components as those of the seat back frame 100 described above for the seat back frame 100D, and overlapping description thereof will be omitted. The seat back frame 100D will mainly be described in terms of the points different from the seat back frame 100.

The first belt guide 15D differs only in that the insertion portion 152D is longer than the insertion portion 152 of the first belt guide 15 in the left-right direction.

The engagement position of the left arm 151 of the first belt guide 15D with respect to the upper frame portion 213 is the same as the engagement position of the left arm 151 of the first belt guide 15.

On the other hand, the engagement position of the right arm 151 of the first belt guide 15D with respect to the upper frame portion 213 is further rightward than the engagement position of the right arm 151 of the first belt guide 15. More specifically, the third tubular member 23 is positioned farther to the right than the engagement position of the third tubular member 23 in the upper frame portion 213, and is spaced farther apart from the third tubular member 23 than the right arm 151 of the first belt guide 15.

The seat back frame 100D has the same effect as the seat back frame 100.

Further, in the first belt guide 15D, the insertion portion 152D is long in the left-right direction, so that the insertion operation of the seat belt B1 is facilitated.

Further, since the insertion portion 152D is long in the left-right direction, the joining position of the left and right arm portions 151 to the upper frame portion 213 can be appropriately set. For example, by joining the arm portion 151 to the upper frame portion 213 at a position further apart from the joining position of the third pipe member 23, the members can be prevented from being intensively joined to a narrow range, so that when a load is applied to the seatback frame 100D, the load can be prevented from being concentrated to the narrow range of the upper frame portion 213, deformation, breakage, or the like of the upper frame portion 213 can be suppressed, and the durability of the seatback frame 100D can be improved.

Sixth embodiment

In the sixth embodiment, a seat back frame 100E including a second belt guide 16E is illustrated, a part of the structure of the second belt guide 16E being different from that of the first belt guide 15. Fig. 11 is a front view of the seat back frame 100E.

The same reference numerals are given to the same components as those of the seat back frame 100 described above for the seat back frame 100E, and overlapping description thereof will be omitted. The seat back frame 100E will mainly be described in terms of the points different from the seat back frame 100.

The second belt guide 16E differs only in that the insertion portion 162E is longer in the left-right direction than the insertion portion 162 of the second belt guide 16E.

The engagement position of the left arm portion 161 of the second belt guide 16E with respect to the upper frame portion 213 is the same as the engagement position of the left arm portion 151 of the second belt guide 16.

On the other hand, the engagement position of the right arm portion 161 of the second belt guide 16E with respect to the upper frame portion 213 is more rightward than the engagement position of the right arm portion 161 of the second belt guide 16. More specifically, the third tubular member 23 is positioned farther to the right than the engagement position of the third tubular member 23 in the upper frame portion 213, and is spaced farther apart from the third tubular member 23 than the right arm portion 161 of the second belt guide 16.

The seat back frame 100E has the same effect as the seat back frame 100.

Further, in the second belt guide 16E, the insertion portion 162E is long in the left-right direction, so that the insertion operation of the seat belt B1 is facilitated.

Further, since the insertion portion 162E is long in the left-right direction, the joining position of the left and right arm portions 161 to the upper frame portion 213 can be appropriately set. Thus, the durability of the seat back frame 100E can be improved.

Seventh embodiment

In the seventh embodiment, a seat back frame 100F including the air blowing device 60 is exemplified. Fig. 12 is a front view of the seat back frame 100F.

The same reference numerals are given to the same components as those of the seat back frame 100 described above with respect to the seat back frame 100F, and overlapping description thereof will be omitted. The seat back frame 100F will mainly be described in terms of the points different from the seat back frame 100.

In the seat back frame 100F, one air blowing device 60 is disposed on each of the left and right sides of the webbing winding device B on the front surface side of the upper portion of the panel frame 30.

Each air blowing device 60 is fixedly attached to a bracket, not shown, including a metal plate, joined to the front surface side of the panel frame 30 by bolts or the like.

Each air blowing device 60 includes a housing 61 in which a drive source such as a fan and a motor is stored, and a duct 62 extending upward from the housing 61 and opening at the front side.

The left air blowing device 60 is disposed in a gap region surrounded by the first pipe member 21, the third pipe member 23, and the fourth pipe member 24 and having a margin in the front-rear direction. The left air blowing device 60 is disposed such that the duct 62 is located between the end portions of the two wires extending downward of the headrest frame 11 so as not to interfere with the headrest frame 11.

The right air blowing device 60 is disposed at an upper portion in a gap region surrounded by the first, second, and third pipe members 21, 22, and 23 and having a margin in the front-rear direction. The right air blowing device 60 is disposed such that the duct 62 extending upward is located between the end portions of the two wires extending downward of the headrest frame 12 so as not to interfere with the headrest frame 12.

The seat back frame 100F includes the air blowing devices 60 on the left and right sides, and can provide an air blowing function to the seat.

Further, since the air blowing devices 60 are disposed using the clearance space in the seat back frame 100F, the seat back frame 100F can be prevented from being enlarged. Further, since the periphery is surrounded by the pipe member, the air blowing device 60 can be effectively protected even when a load is applied to the seat.

Eighth embodiment

In the eighth embodiment, a seat back frame 100G as another example is illustrated. Fig. 13 is a front view of the seat back frame 100G.

The same reference numerals are given to the same components as those of the seat back frame 100 described above with respect to the seat back frame 100G, and overlapping description thereof will be omitted. The seat back frame 100G will mainly be described in terms of the points different from the seat back frame 100.

The seat back frame 100G differs from the seat back frame 100 mainly in that the panel frame 30 is not provided.

In the seat back frame 100, the support bracket 40 of the webbing winding device B is supported by the panel frame 30.

In the seat back frame 100G, the support bracket 40G of the webbing winding device B is supported by the pipe frame 20.

The support bracket 40G comprises a substantially rectangular or substantially square metal flat plate. The support bracket 40G may be larger than the webbing winding device B in front view by about one turn.

The front surface of the right edge portion of the support bracket 40G is joined to the rear portion of the outer peripheral surface of the third pipe member 23. The front surface of the lower edge portion of the bracket 40G is joined to the rear portion of the outer peripheral surface of the fourth pipe member 24.

The support bracket 40G also has an insertion hole for the bolt 43, and the rear surface side engages with the head of the bolt 43. The webbing take-up device B is fixed to the front surface side of the support bracket 40G by a bolt 43 and a nut, not shown.

In addition, the support bracket 40G may be other than substantially rectangular or substantially square. But preferably comprises a metal flat plate having a substantially right angle portion along the outer edge portion of the third pipe member 23 and the outer edge portion of the fourth pipe member 24.

The support bracket 40G may extend its left edge portion to the left frame portion 211, and the front surface of the left edge portion may be joined to the rear portion of the outer peripheral surface of the left frame portion 211. In this case, the lower edge portion of the support bracket 40G may be joined to the fourth pipe member 24 or may not be joined to the fourth pipe member 24.

The seatback frame 100G does not have the panel frame 30, and thus can achieve a significant weight saving. Further, since the panel frame 30 is not the largest member, the number of parts can be reduced and the manufacturing cost can be reduced.

Further, since the support bracket 40G of the seatbelt retractor B is joined to the rear portions of the outer peripheral surfaces of the third pipe member 23 and the fourth pipe member 24 of the pipe frame 20, high support strength against the load received from the seatbelt B1 can be obtained.

[ Others ]

The embodiments of the present invention have been described above. The invention is not limited to the embodiments described. For example, in the embodiment, the constituent elements integrally formed from a single member may be replaced with constituent elements divided into a plurality of members and coupled or fixed to each other. The constituent element formed by connecting a plurality of members may be replaced by a constituent element integrally formed from a single member. In addition, the details shown in the embodiments may be changed as appropriate within the scope of the gist of the invention.

For example, in the pipe frame 20, the first pipe member 21 constitutes a left-right frame and an upper frame, and the second pipe member 22 constitutes a lower frame, but the present invention is not limited thereto. The first pipe member 21 may constitute a left-right frame and a lower frame, and the second pipe member 22 may constitute an upper frame.

Further, the first pipe member 21 may be formed in a substantially U-shape having an upper frame portion along an upper edge portion of the seatback frame 100, a lower frame portion along a lower edge portion of the seatback frame 100, and a left frame portion or a right frame portion along a left edge portion or a right edge portion of the seatback frame 100. In this case, the second pipe member 22 is preferably provided as a right frame portion or a left frame portion parallel to the up-down direction along the right edge portion or the left edge portion of the seatback frame 100. Further, it is preferable that the third pipe member 23 is provided in the lateral direction and the fourth pipe member 24 is provided in the longitudinal direction.

The number of the first reinforcing portions 311, the third reinforcing portions 316, the fourth reinforcing portions 317, and the fifth reinforcing portions 318 in the panel frame 30 may be increased or decreased. The arrangement of the first reinforcing portion 311, the third reinforcing portion 316, the fourth reinforcing portion 317, and the fifth reinforcing portion 318 may be changed.

[ Additional means 1]

A method for manufacturing a seat back frame, comprising the steps of:

Preparing a first belt guide for inserting a webbing paid out from a webbing take-up device, and

A second belt guide, different from the first belt guide, is prepared, which allows the webbing paid out from the webbing winding device to be inserted.

In the solution 1, the method for manufacturing the seat back frame includes the step of preparing the first belt guide and the step of preparing the second belt guide, so that the seat back frame having high support rigidity of the seat belt can be preferably manufactured.

[ Additional means for solving the problems 2]

The method of manufacturing a seat back frame according to solution 1, comprising the steps of:

preparing a tube frame, and

The first belt guide and the second belt guide are mounted along a tube periphery of the tube frame.

In the solution 2, the method for manufacturing the seat back frame includes a step of preparing the pipe frame and a step of attaching the first belt guide and the second belt guide along the pipe circumferential surface of the pipe frame, so that the seat back frame having high attaching strength of each belt guide can be preferably manufactured.

For example, in the seatback frames 100, 100A, 100C, 100D, 100F, 100G, the seat back frames 100, 100A, 100C, 100D, 100F, 100G are manufactured by performing a process of preparing the first belt guides 15, 15C, 15D, a process of preparing the second belt guides 16, 16C, 16E, and a process of preparing the tube frames 20, 20A, 20C, and joining the first belt guide 15 and the second belt guide 16 to the upper frame portion 213.

The step of preparing the first belt guide, the step of preparing the second belt guide, and the step of preparing the panel frame may be performed in any order, and two or three steps may be performed in parallel.

Embodiment relating to a seat locking device

An embodiment of the seat lock device will be described below with reference to fig. 14 to 19B. However, the embodiments described below are given various restrictions which are technically preferable for implementing the present embodiment, but the scope of the present embodiment is not limited to the following embodiments and examples.

The present embodiment has industrial applicability with respect to a seat locking device.

[ Background of the embodiment ]

Conventionally, a seat lock device for fixedly holding a vehicle seat to a vehicle body is known. The seat locking device comprises a lock catch and a locking unit, wherein the lock catch is arranged on a vehicle main body, and the locking unit is arranged on a seat for a vehicle and used for locking the lock catch. The lock catch has a lever that is locked by a lock unit, and a base member that is attached to a vehicle body.

For example, japanese patent No. 5373535 describes a seat lock device provided with a reinforcing member which is provided on a side surface of a lever on a side where the lever falls down due to a load, and is fixed so as to be in contact with a surface side of a base member.

Further, japanese patent No. 7059128 describes a seat lock device described below.

Specifically, the base bracket (base member) has a support portion that supports an end portion of the lever. The support portion deforms when a load exceeding a predetermined load is input to the lever. The support portion is deformed to allow the end portion of the rod supported by the support portion to move relative to the base bracket.

[ Problem of the present embodiment ]

However, in the invention described in patent document 1, since the seat locking device includes the reinforcing member, there is a problem in that the number of parts increases, which increases the cost.

Further, in the invention described in patent document 2, since the lever has an extension shaft portion extending in the distal direction of the lever than the fixing portion of the base bracket, there is a problem in that the lock catch becomes large.

The present embodiment has been made in view of the above circumstances, and an object thereof is to provide a seat lock device capable of absorbing an impact without increasing the number of parts or increasing the size.

[ Means of solving the problems ]

In order to solve the above problem, the seat locking device according to the solution 1 includes:

A latch provided in the vehicle body, and

A locking unit provided in the vehicle seat and holding the vehicle seat by locking the lock catch,

The lock catch has a base bracket mounted to the vehicle body and a lever that is caught by the locking unit,

The lever has a first shaft portion, a second shaft portion, and a connecting portion connecting the first shaft portion and the second shaft portion,

The first shaft portion has a deformation portion that deforms when a load exceeding a predetermined load is input to the first shaft portion,

The base bracket has a first support portion that supports the first shaft portion and a second support portion that supports the second shaft portion.

Solution 2 is the seat locking apparatus according to solution 1, wherein,

The locking unit is locked to the first shaft portion in the lever,

The first support portion is disposed further toward the front of the vehicle seat than an engagement portion, which is a portion of the locking unit that is engaged with the first shaft portion.

Solution 3 is the seat locking apparatus according to solution 1, wherein,

The locking unit is locked to the first shaft portion in the lever,

The length of the engagement portion, which is a portion of the locking unit that engages with the first shaft portion, is equal to the length of the first shaft portion from the deformed portion to a position where the first shaft portion abuts against the first support portion.

Solution 4 is the seat locking apparatus according to solution 1, wherein,

The locking unit is locked to the first shaft portion in the lever,

The length of the engagement portion, which is a portion of the locking unit that engages with the first shaft portion, is shorter than the length of the first shaft portion from the deformed portion to a position where the first shaft portion abuts against the first support portion.

Solution 5 is the seat locking apparatus according to solution 1, wherein,

The locking unit is locked to the first shaft portion in the lever,

The length of the engagement portion, which is a portion of the locking unit that engages with the first shaft portion, is longer than the length of the first shaft portion from the deformed portion to a position where the first shaft portion abuts against the first support portion.

Solution 6 is the seat locking apparatus according to solution 1, wherein,

The base bracket includes a protrusion portion that,

The protruding portion is arranged in a direction in which the first shaft portion or the second shaft portion falls when a load exceeding a predetermined load is input to the first shaft portion.

The solution 7 is the seat locking apparatus according to the solution 1, comprising:

A reinforcing member covering the peripheral surfaces of the first shaft portion and the second shaft portion,

The reinforcing member is disposed closer to the base bracket than the deformation portion.

[ Effect of solving means ]

According to the solution 1, in the vehicle seat, when a load exceeding a predetermined load or the like is applied in the forward direction and a strong force pulling forward is applied from the lock unit to the latch, the lever of the latch is deformed by the deformation portion, whereby the load can be absorbed. That is, the impact can be absorbed without increasing the number of parts or enlarging the parts.

According to the solution 2, when the load received by the lock catch is equal to or less than the predetermined load, the first support portion can efficiently support the lever.

According to the solution 3, in the structure in which the length of the engagement portion between the lock unit and the first shaft portion is equal to the length from the deformed portion to the position where the deformed portion abuts against the first support portion in the first shaft portion, the load can be absorbed by the deformation of the lever of the lock catch.

According to the solution 4, in the structure in which the length of the engagement portion between the lock unit and the first shaft portion is shorter than the length from the deformed portion to the position where the deformed portion abuts against the first support portion in the first shaft portion, the load can be absorbed by the deformation of the lever of the lock catch.

According to the solution 5, in the structure in which the length of the engagement portion between the lock unit and the first shaft portion is longer than the length from the deformed portion to the position where the deformed portion abuts against the first support portion in the first shaft portion, the load can be absorbed by the deformation of the lever of the lock catch.

According to the solving means 6, when the lever of the lock catch is deformed, the first shaft portion or the second shaft portion can be supported by the protruding portion, so that the strength of the lock catch can be improved.

According to the solving means 7, the first shaft portion and the second shaft portion are reinforced by the reinforcing member, and the lever is not prevented from being deformed by the deforming portion.

[ Content of embodiments related to seat locking apparatus ]

Fig. 14 is an external perspective view of the vehicle seat Se and the latch 1001 of the present embodiment.

In addition, the seat back Se1 of the vehicle seat Se is positioned on the front side (vehicle body front side) with respect to the side on which the occupant sits.

The vehicle seat Se is, for example, a seat provided in a vehicle such as an automobile.

As shown in fig. 14, the vehicle seat Se mainly includes a seat back Se1, a seat cushion Se2, a headrest Se3, a lock unit Se4, and a seat belt Se5.

The seat back Se1 supports the waist and back of an occupant seated in the seat (hereinafter referred to as a seated person).

The seat back Se1 includes a metal frame (not shown), a cushion pad (not shown), and a cover that constitute the framework of the seat back Se 1.

The frame is covered with a cushion pad comprising a relatively soft resin foam material such as urethane foam.

The cushion pad is covered with a cover comprising leather, cloth, etc.

The seat cushion Se2 supports the buttocks and thigh of the seated user.

The seat cushion Se2 also includes a metal frame, a cushion covering the frame, and a cover covering the cushion, similar to the seat back Se 1.

The seat belt Se5 binds the occupant to the seat cushion Se2 and the seat back Se1.

In the vehicle seat Se, the seatback Se1 can be tilted in the vehicle seat Se front-rear direction with respect to the seat cushion Se2 about a tilting shaft (not shown) provided at the lower end portion of the seatback Se 1. The tilting shaft is fixed to the vehicle body via a fixing bracket Se 6.

The vehicle seat Se can be set to a reclined state and an upright state.

The reclined state refers to a state in which the seat back Se1 is folded over the seat cushion Se 2.

The standing state refers to a state in which the seat back Se1 stands upright with respect to the seat cushion Se 2.

The lock unit Se4 includes a means for switching the vehicle seat Se from the upright state to the reclined state, and is mounted on an upper portion of the seat back Se 1.

The lock unit Se4 mainly includes a lock member Se4a and a lock lever Se4b.

The lock member Se4a is detachably engaged with a lock 1001 attached to the vehicle body.

The lock operation lever Se4b switches the lock member Se4a between a lockable state lockable to the lock catch 1001 and an unlockable state that cannot be locked.

The lock unit Se4 and the latch 1001 are seat lock devices.

In the vehicle seat Se, when the occupant operates the lock lever Se4b in the upright state, the locked state of the seat back Se1 is released by the lock unit Se 4. With the release of the locked state, the occupant can rotate the seat back Se1 toward the seat front side and fold the vehicle seat Se from the upright state to the reclined state.

In order to return the vehicle seat Se from the reclined state to the upright state, the occupant may lift the seat back Se1 or the like by hand against the biasing force of a coil spring, not shown, and engage the lock member Se4a with the lock catch 1001 to switch the seat back Se1 to the locked state.

The lock 1001 is a component for locking the vehicle seat Se in the erected state.

The lock 1001 is disposed at a position facing an outer portion of the vehicle seat Se in the seat width direction in a side portion of the vehicle body.

Fig. 15 is a perspective view of the lock unit Se4 and the latch 1001, and fig. 16 is a front view of the latch 1001.

As shown in fig. 15 and 16, the lock 1001 mainly includes a base bracket 1010 and a lever 1020.

The base bracket 1010 is a plate-like member fixed to a floor of the vehicle body and made of a metal material such as steel. Further, the rigidity of the base bracket 1010 is set higher than the lever 1020.

The base bracket 1010 mainly includes a base body portion 1011, a first support portion 1012, a second support portion 1013, and a mounting portion 1014.

The base body 1011 has a substantially flat plate shape, and is formed so that its vertical dimension gradually becomes shorter as it goes forward.

The first support portion 1012 and the second support portion 1013 are formed in a substantially central portion of the base bracket 1010 with a space therebetween in the front-rear direction of the vehicle seat Se.

The first support portion 1012 is located further toward the front side of the vehicle seat Se than the second support portion 1013.

The first support portion 1012 has a through hole 1012a, and the through hole 1012a is used for fixing a first end 1021a of the rod 1020, which will be described later.

The second supporting portion 1013 is located further to the rear side of the vehicle seat Se than the first supporting portion 1012.

The second supporting portion 1013 has a through hole 1013a, and the through hole 1013a is used to fix a second end 1022a of the lever 1020.

As shown in fig. 16, the first support portion 1012 and the second support portion 1013 have a bulging shape bulging toward a coupling portion 1023 of the lever 1020, which will be described later, than the base body portion 1011. The first support portion 1012 and the second support portion 1013 have concave shapes on the back surface (vehicle body side surface).

Therefore, the rigidity of assembly with the lever 1020 can be improved. Further, the first end 1021a and the second end 1022a of the lever 1020 may not protrude from the base bracket 1010 to the vehicle body side.

The plurality of mounting portions 1014 are formed so as to surround the first support portion 1012 and the second support portion 1013, and are used to mount the base bracket 1010 to the vehicle body.

The mounting portion 1014 has a plurality of mounting holes for fixing to the vehicle body, and is mounted in a state of being in contact with the vehicle body by using a mounting member (mounting bolt, rivet, or the like) not shown.

In the present embodiment, two mounting holes are provided in the upper and lower sides of the rear end portion of the base body 1011, and one mounting hole is provided in the front end portion of the base body 1011. The mounting hole provided at the lower side of the rear end of the base body 1011 is a long hole.

As shown in fig. 16, the lever 1020 is an engagement member which is attached to the base bracket 1010, and which extends toward the lock member Se4a to be elongated and bent in a U shape so as to engage with the lock member Se4 a.

The rod 1020 is a rod-shaped or wire-shaped member made of a metal material such as steel.

The lever 1020 mainly includes a first shaft portion 1021, a second shaft portion 1022, and a connecting portion 1023.

The first shaft portion 1021 has a first end portion 1021a, a first fixing portion 1021b, and a first shaft body portion 1021c.

The first end 1021a is an end of the first shaft portion 1021 on the base bracket 1010 side.

The first end 1021a is attached to the first support portion 1012 through the through hole 1012a, and does not protrude from the base bracket 1010 to the vehicle body side so as to be received in the concave shape of the first support portion 1012.

The first fixing portion 1021b sandwiches the edge portion of the through hole 1012a in the plate thickness direction of the base body portion 1011, thereby fixing the first end portion 1021a to the first support portion 1012.

The first fixing portion 1021b is formed by, for example, caulking.

The first shaft body 1021c extends from the base bracket 1010 side toward the vehicle seat Se side.

The first shaft body portion 1021c has a first body portion 1021ca, a second body portion 1021cb, a deformed portion 1021cc, and a third body portion 1021cd.

The first body portion 1021ca and the third body portion 1021cd extend parallel to a second shaft body portion 1022c described below. That is, the first body portion 1021ca and the third body portion 1021cd extend parallel to the left-right direction of the vehicle seat Se.

The second body portion 1021cb is provided between the first body portion 1021ca and the deformation portion 1021cc, and extends in an oblique direction with respect to the vehicle seat Se left-right direction.

The deformation portion 1021cc is provided between the second body portion 1021cb and the third body portion 1021cd, and bends the first shaft body portion 1021c toward the inside of the lever 1020.

The second shaft portion 1022 has a second end 1022a, a second fixing portion 1022b, and a second shaft body portion 1022c.

The second end 1022a is an end of the second shaft 1022 on the base bracket 1010 side.

The second end 1022a is attached to the second support part 1013 via the through hole 1013a, and does not protrude from the base bracket 1010 to the vehicle body side so as to be accommodated in the concave shape of the second support part 1013.

The second fixing portion 1022b sandwiches the edge portion of the through hole 1013a in the plate thickness direction of the base body portion 1011, thereby fixing the second end portion 1022a to the second support portion 1013.

The second fixing portion 1022b is formed by, for example, caulking.

The second shaft body 1022c extends from the base bracket 1010 side toward the vehicle seat Se side. That is, the second shaft body 1022c extends parallel to the left-right direction of the vehicle seat Se.

Further, the length of the portion of the first shaft portion 1021 protruding from the base bracket 1010 is set longer than the length of the portion of the second shaft portion 1022 protruding from the base bracket 1010.

The length of the portion of the first shaft portion 1021 protruding from the base bracket 1010 refers to the length of the first shaft portion 1021 from the position where it abuts against the first support portion 1012 to the end on the side of the connecting portion 1023.

The length of the portion of the second shaft 1022 protruding from the base bracket 1010 is the length of the second shaft 1022 from the position where the second shaft 1022 abuts the second support 1013 to the end of the connecting portion 1023.

The connection portion 1023 connects the extending ends (ends on the opposite side from the base bracket 1010) of the first shaft body portion 1021c and the second shaft body portion 1022 c.

Fig. 17A shows how the lever 1020 of the lock catch 1001 configured as described above is deformed by a load exceeding a predetermined load.

The first shaft 1021 of the lever 1020 is engaged with the lock member Se4a.

Specifically, as shown in fig. 17A, the lock member Se4a is engaged with the third body portion 1021cd of the first shaft portion 1021.

For example, at the time of a vehicle front collision, a load F due to inertia acting on the upper body of the occupant restrained by the webbing Se5 is input to the third body portion 1021cd via the lock member Se4 a.

When a load F equal to or less than a predetermined load is input to the third body portion 1021cd, the load F received by the third body portion 1021cd is received by the first support portion 1012 located further forward of the third body portion 1021cd than the vehicle seat Se.

Specifically, the first support portion 1012 is disposed further toward the front of the vehicle seat Se than the engagement portion between the third body portion 1021cd and the lock member Se4 a. Therefore, the first support portion 1012 functions like an inclined strut by the arrangement relation. Therefore, a structure is achieved in which the support rigidity is higher than in the case where the first support portion 1012 is disposed further toward the rear of the vehicle seat Se than in the case where the engagement portion of the third body portion 1021cd and the lock member Se4a is disposed.

That is, when the load received by the lock catch 1001 is equal to or less than a predetermined load, the first support portion 1012 can efficiently support the lever 1020.

On the other hand, when a load F exceeding the predetermined load is input to the third main body portion 1021cd, as shown by the two-point chain line in fig. 17A, the deformed portion 1021cc acts in the extending direction and deforms so that the circumferences of the first shaft portion 1021 and the second shaft portion 1022 become equal. This can disperse stress caused by the load F to the first support portion 1012 and the second support portion 1013.

That is, the deformed portion 1021cc easily deforms the rod 1020, and the rod 1020 is prevented from being broken by the stress caused by the load F.

In the conventional structure in which the lever does not have the deformation portion, when a load F exceeding a predetermined load is input to the lever, the stress received by the first support portion 1012 is greater than that of the present embodiment. Therefore, a reinforcing structure is required around the first support portion 1012, resulting in an increase in the number of parts or an increase in cost.

On the other hand, in the present embodiment, since the lever 1020 has the deformation portion 1021cc, when the load F exceeding the predetermined load is inputted to the lever 1020, the lever 1020 can be deformed as in the two-point chain line shown in fig. 17A. Thus, a part of the energy generated at the time of a vehicle front collision or the like is consumed by the deformation of the lever 1020. Therefore, the impact can be absorbed by the seat lock device (lock unit Se4 and lock catch 1001), and the impact received by the occupant can be relaxed.

As described above, in the present embodiment, the lever 1020 includes the deformed portion 1021cc, whereby the above-described effects can be achieved. That is, the above-described effects can be achieved without increasing the size of the seat lock device more than necessary and without adding parts such as a reinforcing member.

As shown in fig. 17A, the length of the engagement portion between the third body 1021cd and the lock member Se4a is a, and the length from the deformed portion 1021cc to the position where the deformed portion abuts against the first support portion 1012 is b.

In the example shown in fig. 17A, the lengths of a and b are equivalent.

In addition, as shown in fig. 17B, the lengths of a and B may be longer than a. As shown in fig. 17C, b may be shorter than a.

Next, a method of manufacturing the seat lock device (lock unit Se4 and lock catch 1001) will be described.

The worker first forms the lever 1020 so as to include the first shaft portion 1021 having the deformed portion 1021cc, the second shaft portion 1022, and the connecting portion 1023 (first step).

Next, the worker fixes the lever 1020 formed in the first step to the base bracket 1010 (second step).

The order of the first step and the second step may be reversed. That is, after the lever 1020 is fixed to the base bracket 1010, the lever 1020 may be formed so as to include the first shaft portion 1021 having the deformed portion 1021cc, the second shaft portion 1022, and the coupling portion 1023.

Through the above steps, the seat locking device including the striker 1001 is manufactured.

Modification 1

Next, modification 1 of the embodiment will be described.

The following description will focus on differences from the above-described embodiments.

Fig. 18A and 18B show a lock catch 1001 of modification 1.

Fig. 18A is a front view of the shackle 1001. In addition, as in fig. 17A, a two-dot chain line shown in fig. 18A indicates a state in which a load exceeding a predetermined load is input to the third body portion 1021cd and the lever 1020 is deformed.

Fig. 18B is a view of the latch 1001 as seen from the right direction of the vehicle seat Se. In fig. 18B, the lever 1020 is omitted.

In modification 1, the base bracket 1010 further includes a first protruding portion 1015a (protruding portion) and a second protruding portion 1015b (protruding portion).

The first protruding portion 1015a is provided further toward the front of the vehicle seat Se than the through hole 1012 a.

The second protrusion 1015b is provided in the front direction of the vehicle seat Se than the through hole 1013 a.

The first protruding portion 1015a and the second protruding portion 1015b of the present embodiment are formed by respectively punching the base body 1011 of the base bracket 1010 into a U shape. The broken line shown in fig. 18B indicates a position where the first protruding portion 1015a and the second protruding portion 1015B are bent.

The first protruding portion 1015a and the second protruding portion 1015b may be formed by respectively punching the base body 1011 into コ or M.

The first protruding portion 1015a may be formed at an angle at which the first shaft 1021 of the rod 1020 deformed as shown in fig. 18A can be supported.

The second protrusion 1015b may be formed at an angle that can support the second shaft 1022 of the rod 1020 deformed as shown in fig. 18A.

That is, the protruding portion (first protruding portion 1015 a) is arranged in a direction in which the first shaft portion 1021 falls when a load exceeding a predetermined load is input to the first shaft portion 1021.

The protruding portion (second protruding portion 1015 b) is arranged in a direction in which the second shaft 1022 falls when a load exceeding a predetermined load is input to the first shaft 1021.

By the first protruding portion 1015a and the second protruding portion 1015b configured as described above, the first shaft portion 1021 and the second shaft portion 1022 can be supported when the lever 1020 is deformed. Therefore, the strength of the lock catch 1001 can be improved.

The first protrusion 1015a and the second protrusion 1015b may be formed of different members from the base bracket 1010.

Next, a method of manufacturing the seat lock device (lock unit Se4 and lock catch 1001) of modification 1 will be described.

The operator performs the first step in the same manner as in the above embodiment.

Next, the worker forms the first protruding portion 1015a and the second protruding portion 1015b on the base bracket 1010 (third step).

Next, the operator performs a second step in the same manner as in the above embodiment.

The order of the first step, the third step, and the second step is not limited to the above example.

Through the above steps, a seat lock device including the latch 1001 of modification 1 is manufactured.

Modification 2

Next, modification 2 of the embodiment will be described.

Fig. 19A and 19B show a lock catch 1001 of modification 2.

Fig. 19A is a front view of the shackle 1001. In addition, as in fig. 19A, the two-dot chain line shown in fig. 19A shows a state in which a load exceeding a predetermined load is input to the third body portion 1021cd, and the lever 1020 is deformed.

Fig. 19B is a view of the latch 1001 as seen from the right direction of the vehicle seat Se.

In modification 2, the lock catch 1001 further includes a reinforcing member 1030.

The reinforcing member 1030 is configured to cover the peripheral surfaces of the first shaft portion 1021 and the second shaft portion 1022 and to contact the first support portion 1012 and the second support portion 1013.

The reinforcing member 1030 is fixed to the base bracket 1010, for example, by welding.

The position where the reinforcing member 1030 is disposed is not limited to the example shown in fig. 19A and 19B, but is preferably provided on the base bracket 1010 side of the deformed portion 1021 cc. Thus, when a load exceeding a predetermined load is input to the third main body portion 1021cd, the first shaft portion 1021 and the second shaft portion 1022 are reinforced, and the lever 1020 is not prevented from being deformed by the deformation portion 1021 cc.

Next, a method of manufacturing the seat lock device (lock unit Se4 and lock catch 1001) of modification 2 will be described.

The operator performs the first step and the second step in the same manner as in the above embodiment.

Next, the worker covers the peripheral surfaces of the first shaft portion 1021 and the second shaft portion 1022 with the reinforcing member 1030, and makes contact with the first support portion 1012 and the second support portion 1013 (fourth step).

Next, the worker fixes the reinforcing member 1030 to the base bracket 1010 (fifth step).

The order of the first step and the second step is not limited to the above example.

Through the above steps, a seat lock device including the latch 1001 of modification 2 is manufactured.

As described above, the seat lock device in the present embodiment includes the lock catch 1001 provided in the vehicle body, and the lock unit Se4 provided in the vehicle seat Se, and holds the vehicle seat Se by locking the lock catch 1001, the lock catch 1001 includes the base bracket 1010 attached to the vehicle body and the lever 1020 locked by the lock unit Se4, the lever 1020 includes the first shaft portion 1021, the second shaft portion 1022, and the connecting portion 1023 connecting the first shaft portion 1021 and the second shaft portion 1022, the first shaft portion 1021 includes the deformation portion 1021cc which deforms when a load exceeding a predetermined load is input to the first shaft portion 1021, and the base bracket 1010 includes the first support portion 1012 which supports the first shaft portion 1021 and the second support portion 1013 which supports the second shaft portion 1022.

Therefore, in the vehicle seat Se, when a load exceeding a predetermined load or the like is applied in the forward direction and a strong force pulling forward is applied from the lock unit Se4 to the lock catch 1001, the lever 1020 of the lock catch 1001 is deformed by the deformation portion 1021cc, and the load can be absorbed. That is, the impact can be absorbed without increasing the number of parts or enlarging the parts.

In the seat locking device according to the present embodiment, the lock unit Se4 is locked to the first shaft portion 1021 of the lever 1020, and the first support portion 1012 is disposed further toward the front of the vehicle seat Se than the engagement portion, which is a portion where the lock unit Se4 is locked to the first shaft portion 1021.

Therefore, when the load received by the lock catch 1001 is equal to or less than the predetermined load, the first support portion 1012 can efficiently support the lever 1020.

In the seat locking device according to the present embodiment, the locking means Se4 is locked to the first shaft portion 1021 of the lever 1020, and the length of the locking portion, which is the portion of the locking means Se4 locked to the first shaft portion 1021, is equal to the length of the first shaft portion 1021 from the deformed portion 1021cc to the position where the locking means Se4 abuts against the first support portion 1012.

Therefore, even in a structure in which the length of the engagement portion between the lock unit Se4 and the first shaft portion 1021 is equal to the length from the deformed portion 1021cc to the position where it abuts against the first support portion 1012 in the first shaft portion 1021, the lever 1020 of the lock catch 1001 is deformed to absorb the load.

In the seat locking device according to the present embodiment, the locking means Se4 is locked to the first shaft portion 1021 of the lever 1020, and the length of the locking portion, which is the portion of the locking means Se4 locked to the first shaft portion 1021, is shorter than the length of the first shaft portion 1021 from the deformed portion 1021cc to the position where the locking means Se4 abuts against the first support portion 1012.

Therefore, even in a structure in which the length of the engagement portion between the lock unit Se4 and the first shaft portion 1021 is shorter than the length from the deformed portion 1021cc to the position where the first support portion 1012 is abutted, the lever 1020 of the lock catch 1001 is deformed to absorb the load.

In the seat locking device according to the present embodiment, the locking means Se4 is locked to the first shaft portion 1021 of the lever 1020, and the length of the locking portion, which is the portion of the locking means Se4 locked to the first shaft portion 1021, is longer than the length of the first shaft portion 1021 from the deformed portion 1021cc to the position where the locking means Se4 abuts against the first support portion 1012.

Therefore, even in a structure in which the length of the engagement portion between the lock unit Se4 and the first shaft portion 1021 is longer than the length of the first shaft portion 1021 from the deformed portion 1021cc to the position where the first support portion 1012 is abutted, the lever 1020 of the lock catch 1001 can be deformed to absorb the load.

In the seat lock device according to the present embodiment, the base bracket 1010 includes protruding portions (first protruding portion 1015a, second protruding portion 1015 b) arranged in a direction in which the first shaft portion 1021 or the second shaft portion 1022 falls when a load exceeding a predetermined load is input to the first shaft portion 1021.

Therefore, when the lever 1020 of the lock catch 1001 is deformed, the first shaft portion 1021 or the second shaft portion 1022 can be supported by the protruding portion, and therefore the strength of the lock catch 1001 can be improved.

The seat lock device in the present embodiment includes a reinforcing member 1030 that covers the peripheral surfaces of the first shaft portion 1021 and the second shaft portion 1022, and the reinforcing member 1030 is disposed closer to the base bracket 1010 than the deformed portion 1021 cc.

Therefore, the first shaft portion 1021 and the second shaft portion 1022 are reinforced by the reinforcing member 1030, and the lever 1020 is not prevented from being deformed by the deformed portion 1021 cc.

A method of manufacturing the seat lock device according to the present embodiment will be described. Specifically, the seat lock device includes a lock 1001 provided in a vehicle body, and a lock unit Se4 provided in the vehicle seat Se for holding the vehicle seat Se by locking the lock 1001, wherein the lock 1001 includes a base bracket 1010 attached to the vehicle body and a lever 1020 locked by the lock unit Se4, the lever 1020 includes a first shaft portion 1021, a second shaft portion 1022, and a connecting portion 1023 connecting the first shaft portion 1021 and the second shaft portion 1022, the first shaft portion 1021 includes a deformation portion 1021cc that deforms when a load exceeding a predetermined load is input to the first shaft portion 1021, the base bracket 1010 includes a first support portion 1012 that supports the first shaft portion 1021 and a second support portion 1013 that supports the second shaft portion 1022, and the seat lock device includes a first step of forming the lever 1020, and a second step of fixing the lever 1020 to the base bracket 1010.

Therefore, in the vehicle seat Se, when a load exceeding a predetermined load or the like is applied to the lock catch 1001 from the lock unit Se4 and a strong force pulling forward is applied thereto, the lever 1020 of the lock catch 1001 is deformed by the deformation portion 1021cc, and the load can be absorbed. That is, it is possible to manufacture a seat lock device capable of absorbing an impact without increasing the number of parts or enlarging the size.

In the method of manufacturing the seat lock device according to the present embodiment, the lock unit Se4 is locked to the first shaft portion 1021 of the lever 1020, and the first support portion 1012 is disposed further toward the front of the vehicle seat Se than the engagement portion, which is a portion where the lock unit Se4 is locked to the first shaft portion 1021.

Therefore, the seat lock device can be manufactured in which the first support portion 1012 can efficiently support the stay 1020 when the load received by the lock catch 1001 is equal to or less than the predetermined load.

In the method of manufacturing the seat lock device according to the present embodiment, the lock unit Se4 is locked to the first shaft portion 1021 of the lever 1020, and the length of the engagement portion, which is the portion where the lock unit Se4 is locked to the first shaft portion 1021, is equal to the length from the deformed portion 1021cc to the position where it abuts against the first support portion 1012 in the first shaft portion 1021.

Therefore, the seat lock device can be manufactured in which the length of the engagement portion between the lock unit Se4 and the first shaft portion 1021 is equal to the length of the first shaft portion 1021 from the deformed portion 1021cc to the position where the first support portion 1012 is abutted against the deformed portion 1021, and the rod 1020 of the lock catch 1001 is deformed to absorb the load.

In the method of manufacturing the seat lock device according to the present embodiment, the lock unit Se4 is locked to the first shaft portion 1021 of the lever 1020, and the length of the engagement portion, which is the portion where the lock unit Se4 is locked to the first shaft portion 1021, is shorter than the length of the first shaft portion 1021 from the deformed portion 1021cc to the position where it abuts against the first support portion 1012.

Therefore, the seat lock device can be manufactured in which the length of the engagement portion between the lock unit Se4 and the first shaft portion 1021 is shorter than the length of the first shaft portion 1021 from the deformed portion 1021cc to the position where the deformed portion abuts against the first support portion 1012, and the rod 1020 of the lock catch 1001 can be deformed to absorb the load.

In the method of manufacturing the seat lock device according to the present embodiment, the lock unit Se4 is locked to the first shaft portion 1021 of the lever 1020, and the length of the engagement portion, which is the portion where the lock unit Se4 is locked to the first shaft portion 1021, is longer than the length of the first shaft portion 1021 from the deformed portion 1021cc to the position where it abuts against the first support portion 1012.

Therefore, the seat lock device can be manufactured in which the length of the engagement portion between the lock unit Se4 and the first shaft portion 1021 is longer than the length of the first shaft portion 1021 from the deformed portion 1021cc to the position where the first support portion 1012 is abutted against the deformed portion 1021, and the rod 1020 of the lock catch 1001 can be deformed to absorb the load.

The method of manufacturing the seat lock device according to the present embodiment includes a third step of forming protruding portions (first protruding portion 1015a, second protruding portion 1015 b) on the base bracket 1010, the protruding portions being arranged in a direction in which the first shaft portion 1021 or the second shaft portion 1022 falls when a load exceeding a predetermined load is input to the first shaft portion 1021.

Therefore, the seat lock device can be manufactured in which the first shaft portion 1021 or the second shaft portion 1022 can be supported by the protruding portion when the lever 1020 of the latch 1001 is deformed, and therefore the strength of the latch 1001 can be improved.

The method of manufacturing the seat lock device according to the present embodiment includes a fourth step of covering the peripheral surfaces of the first shaft portion 1021 and the second shaft portion 1022 with the reinforcing member 1030, and the reinforcing member 1030 is disposed closer to the base bracket 1010 than the deformed portion 1021 cc.

Therefore, the seat lock device can be manufactured in which the first shaft portion 1021 and the second shaft portion 1022 are reinforced by the reinforcing member 1030, and the lever 1020 is not prevented from being deformed by the deformed portion 1021 cc.

The embodiment to which the present invention is applicable is not limited to the above-described embodiment, and may be modified as appropriate within the scope of the present invention.

For example, the present invention is described with reference to a vehicle seat Se provided in a vehicle such as an automobile, but the present invention can be applied to a vehicle seat other than a vehicle such as a ship or an airplane.

Also, in the embodiment, the locking unit Se4 is mounted to the upper portion of the seatback Se1, but is not limited thereto. The lock unit Se4 and the latch 1001 may be provided at predetermined positions of the vehicle body, respectively, and may be provided at a door, a vehicle seat, a vehicle door (a rear door of a vehicle such as a van), a trunk, a hood, or the like, and one of the lock unit Se4 and the latch 1001 may be provided on the moving side and the other may be provided on the fixed side.

[ 3 ] And a vehicle seat related embodiments

The structure of the embodiment relating to the vehicle seat will be described with reference to fig. 20 to 47B. However, the embodiments described below are for facilitating understanding of the invention related to the vehicle seat, and are not limited to the invention related to the vehicle seat. That is, the invention relating to the vehicle seat may be modified and improved without departing from the gist thereof, and the invention of the vehicle seat naturally includes equivalents thereof.

In the following description, the material, shape, and size of the seat component are not limited to the specific examples, but are not limited to the invention related to the vehicle seat.

The present embodiment has industrial applicability with respect to a vehicle seat.

[ Background of the embodiment ]

Conventionally, there is known a vehicle seat in which a leg rest included in the vehicle seat is configured to be detachable, and the detachable leg rest can be attached to a seat cushion or a seat back. In this case, the leg rest may function as an occupant support member.

For example, international publication No. 2019/065773 discloses that a leg rest included in a vehicle seat is applied as a detachable plate member.

Specifically, the leg rest (plate member) can be attached to the seat back or the seat cushion, preventing collapse of luggage placed on the vehicle seat, and preventing collision of occupants with each other during cornering.

[ Problem of the present embodiment ]

However, in the disclosed technique, a user such as an occupant of the vehicle does not have a method of grasping whether or not the leg rest (plate member) has been properly attached to the seat back or the seat cushion. Therefore, there is a possibility that although the user estimates that the leg rest has been mounted to the seat back or the seat cushion, it is not properly mounted.

The present embodiment has been made in view of the above circumstances, and an object thereof is to provide a vehicle seat capable of recognizing whether or not an occupant supporting member has been properly attached.

[ Means of solving the problems ]

In order to solve the above problems, a vehicle seat according to the solution 1 includes:

A first member and a second member as occupant supporting members, which are locked to a locking mechanism provided in a vehicle body or a vehicle seat;

A first indicator indicating a locked state of the first member, and

And a second indicator indicating a locked state of the second member.

Solution 2 is the vehicle seat according to solution 1, wherein,

The first member is provided on one side of the vehicle seat,

The second member is provided on the other side in the vehicle seat,

The first indicator is provided on one side of the vehicle seat,

The second indicator is provided on the other side in the vehicle seat.

Solution 3 is the vehicle seat according to solution 1, wherein,

The first indicator and the second indicator are disposed adjacent to each other.

The solution 4 is the vehicle seat according to the solution 1, wherein,

The first indicator is spaced from the second indicator a distance shorter than a distance between the first member and the second member.

The solution 5 is the vehicle seat according to the solution 1,

Which comprises a cushion pad of a seat,

The first indicator and the second indicator are provided on a front side of the vehicle seat in the seat cushion and on a center side in a vehicle.

The solution 6 is the vehicle seat according to the solution 2, wherein,

The first indicator is covered by the first cover member,

The second indicator is covered by a second cover member.

The solution 7 is the vehicle seat according to the solution 3, wherein,

The first indicator and the second indicator are covered by a common cover member.

The solution 8 is the vehicle seat according to the solution 1, comprising:

A first connecting member connecting the first indicator with a first one of the locking mechanisms that locks the first member,

The first indicator includes:

A first display unit configured to display an unlocked state of the first member and the first locking mechanism;

a second display part for displaying the locking state of the first member and the first locking mechanism, and

A force applying member for applying force to display the first display portion,

In the case where the first member is locked to the first locking mechanism, the first connecting member is pulled toward the first locking mechanism side, whereby the first display portion is not displayed against the urging member, and on the other hand, the second display portion is displayed,

The vehicle seat includes a second connecting member that connects a second indicator with a second one of the locking mechanisms that locks the second member,

The second indicator includes:

A third display unit that displays an unlocked state of the second member and the second locking mechanism;

a fourth display part for displaying the locking state of the second member and the second locking mechanism, and

A force applying member for applying force to display the third display portion,

In the case where the second member is locked to the second locking mechanism, the second connecting member is pulled toward the second locking mechanism side, whereby the third display portion is not displayed against the urging member, and on the other hand, the fourth display portion is displayed.

The solution 9 is the vehicle seat according to the solution 1, wherein,

The first member and the second member are armrests.

The solution 10 is the vehicle seat according to the solution 1, wherein,

The first member and the second member are side braces.

[ Effect of solving means ]

According to the solution 1, the locked state of the first member and the second member with respect to the locking mechanism can be represented. That is, the occupant or the like can recognize whether the occupant supporting member (the first member and the second member) has been properly mounted.

According to the solution 2, the positional relationship between the first member provided on one side and the first indicator and the positional relationship between the second member provided on the other side and the second indicator are matched. Therefore, the user can easily recognize the locked state of the first member and the second member.

According to the solution 3, the user can recognize the first indicator and the second indicator at one time.

According to the solution 4, the first indicator and the second indicator are arranged in the proximity region within the predetermined distance, and therefore the user can recognize the first indicator and the second indicator at one time.

According to the solving means 5, when the first indicator and the second indicator are confirmed from the front direction of the vehicle seat, the user located in the front direction of the vehicle seat can easily recognize the first indicator and the second indicator.

The above-described case is, for example, a case where the first indicator and the second indicator included in the vehicle seat, which are rear seats, are confirmed from the driver's seat.

According to the solving means 6, the first indicator and the second indicator can be covered with separate cover members.

According to the solving means 7, the number of parts can be reduced as compared with a structure in which the first indicator and the second indicator are covered with separate cover members.

According to the solving means 8, the indicator can be configured simply.

According to the solving means 9, the locked state with respect to the lock mechanism when the first member and the second member are caused to function as the armrest can be represented, respectively.

According to the solving means 10, the locked state of the locking mechanism when the first member and the second member are caused to function as the side stay can be represented.

[ Content of embodiments related to vehicle seat ]

Hereinafter, as an example of the vehicle seat, a vehicle seat will be described as a structural example thereof. However, the present embodiment is also applicable to a vehicle seat other than a vehicle seat, for example, a seat mounted on a ship or an aircraft.

In the following description, the term "front-rear direction" refers to a front-rear direction of the vehicle seat (in other words, a front-rear direction of the seat body) and corresponds to a traveling direction of the vehicle when the vehicle is traveling by manual driving. The term "seat width direction" refers to a lateral direction of the vehicle seat (in other words, a width direction of the seat body), and refers to a direction that coincides with a left-right direction viewed from an occupant seated in the vehicle seat. The term "vertical direction" refers to the vertical direction of the vehicle seat, and is a direction that coincides with the vertical direction when the vehicle travels on the horizontal plane.

The "vehicle exterior side" in the seat width direction refers to a side closer to the vehicle exterior side (in light white, a side closer to the nearest door), and the "vehicle interior side" refers to a side closer to the vehicle interior side (in light white, a side farther from the nearest door).

First, the structure of the vehicle seat S of the present embodiment will be described.

Fig. 20 to 22 are perspective views of the vehicle seat S. Fig. 23 is a side view of the vehicle seat S shown in fig. 20. Fig. 24 is a view showing a seat frame (a seat back frame 2010 and a seat cushion frame 2020) included in the vehicle seat S.

The vehicle seat S is a seat that is placed on a floor of a vehicle body and that is seated by an occupant of the vehicle. In the present embodiment, the vehicle seat S is used as a rear seat corresponding to a rear seat of a vehicle. However, the vehicle seat S is not limited thereto, and may be used as a middle seat of the second row or a rear seat of the third row in a vehicle including three rows of seats in the front-rear direction.

As shown in fig. 20 to 24, the vehicle seat S includes a seat body Sh, a support member 2009a, and a base cover 2009 that constitute a body portion thereof.

The support member 2009a is fixed to the vehicle body floor, and supports the seatback 2001.

The base cover 2009 is disposed at a lower position of the seat body Sh, and covers the support member 2009a from above.

As shown in fig. 20 to 23, the seat body Sh includes a seatback 2001, a seat cushion 2002, and a headrest 2003.

The seatback 2001 supports the waist and the back of an occupant seated in the seat (hereinafter referred to as a seated person).

The seatback 2001 includes a metallic seatback frame 2010 constituting a skeleton of the seatback 2001, a cushion pad (not shown), and a cover.

The seat back frame 2010 is covered with a cushion pad comprising a relatively soft resin foam material such as urethane foam.

The cushion pad of the seat back 2001 is covered with a cover including leather, cloth, or the like.

The seat cushion 2002 supports the buttocks and thighs of the seated user.

The seat cushion 2002 includes a metal seat cushion frame 2020 that forms a skeleton of the seat cushion 2002, a cushion (not shown), and a cover.

The seat cushion frame 2020 is covered with a cushion comprising a relatively soft resin foam material such as urethane foam.

Like the seat back 2001, the cushion pad of the seat cushion 2002 is covered with a cover including leather, woven cloth, or the like.

In the seat cushion 2002, a rear end portion thereof is coupled to a lower end portion of the seatback 2001 by a coupling member 2005.

The vehicle seat S includes a skin member 2004, detachable first and second members 2006A and 2006B, and a lock mechanism 2007.

In the example shown in fig. 20 and 23, the first member 2006A and the second member 2006B function as leg rests that function as occupant support members. The mode of the vehicle seat S shown in fig. 20 and 23 is set to the leg rest standard mode.

In the example shown in fig. 21, the first member 2006A and the second member 2006B function as armrests that serve as occupant support members. The mode of the vehicle seat S shown in fig. 21 is set to the armrest specification mode.

In the example shown in fig. 22, the first member 2006A and the second member 2006B function as side stays that serve as occupant support members. The mode of the vehicle seat S shown in fig. 22 is set to the side stay specification mode.

As shown in fig. 25, the first member 2006A and the second member 2006B each include a connecting portion 2061 and a cushion portion 2062.

The coupling portion 2061 is a U-shaped lock for coupling with the lock mechanism 2007.

In the present embodiment, as shown in fig. 25, the first member 2006A and the second member 2006B each have two U-shaped catches.

The cushion portion 2062 includes a metal frame (not shown), a cushion (not shown) covering the frame, and a cover covering the cushion.

As shown in fig. 26, the lock mechanism 2007 includes a latch 2071, a ratchet 2072, a connecting member 2074, a bottom plate 2075, and the like.

The bottom plate 2075 has an entry groove 2075a into which the joint 2061 of the first member 2006A or the second member 2006B enters. The access groove 2075a is opened only at one side in the longitudinal direction.

The latch 2071 is rotatably mounted to the base 2075 by a rotation shaft 2071 b. The latch 2071 is biased in the clockwise rotation direction in fig. 26 by a biasing member, not shown, such as a tension coil spring.

The latch 2071 has an engagement groove 2071a which is engaged with the coupling portion 2061 of the first member 2006A or the second member 2006B.

The ratchet 2072 is rotatable about a rotation shaft 2072a with respect to the base plate 2075.

The ratchet 2072 is a member that maintains a locked state by being engaged with the latch 2071 and maintains an unlocked state by being disengaged from the latch 2071.

In the unlocked state, when the coupling portion 2061 is brought into the entry groove 2075a of the bottom plate 2075, the coupling portion 2061 abuts against the inner periphery of the engagement groove 2071a of the latch 2071, and the latch 2071 rotates counterclockwise in fig. 26 against the elastic force of the biasing member, which is not shown, and engages with the ratchet 2072, thereby bringing the lock state. And, the rotation of the latch 2071 is restricted by the ratchet 2072.

The connecting member 2074 has one end connected to the ratchet wheel 2072 and the other end connected to an indicator 2008 (see fig. 27 to 31A and 31B) described later, and transmits the operation of the ratchet wheel 2072 to the indicator 2008.

As the connecting member 2074, for example, a cable, a rod, or the like is used.

The locking mechanism 2007 includes locking mechanisms 2007A-2007F shown in FIG. 24.

As shown in fig. 24, the lock mechanisms 2007a to 2007f are fixed to the seat back frame 2010 or the seat cushion frame 2020.

Specifically, in the leg rest standard mode, the lock mechanism 2007A coupled to the coupling portion 2061 of the first member 2006A is fixed to the right side of the front portion of the seat cushion frame 2020 on the opposite side of the side where the access groove 2075a is formed.

In the leg rest standard mode, the lock mechanism 2007B coupled to the coupling portion 2061 of the second member 2006B is fixed to the left side of the front portion of the seat cushion frame 2020 on the opposite side of the side where the access groove 2075a is formed.

As shown in fig. 24, the lock mechanisms 2007A and 2007B are fixed to the front surface of a tube frame as the seat cushion frame 2020.

In the armrest mode, the lock mechanism 2007C coupled to the coupling portion 2061 of the first member 2006A is fixed to the right portion of the seat cushion frame 2020 on the side opposite to the side on which the access groove 2075a is formed.

In the armrest mode, the lock mechanism 2007D coupled to the coupling portion 2061 of the second member 2006B is fixed to the left portion of the seat cushion frame 2020 on the side opposite to the side on which the access groove 2075a is formed.

As shown in fig. 24, the lock mechanisms 2007C and 2007D are fixed to the upper surface of a tube frame as the seat cushion frame 2020.

In the side stay mode, the lock mechanism 2007E coupled to the coupling portion 2061 of the first member 2006A is fixed to the right portion of the seatback frame 2010 on the opposite side to the side where the access groove 2075a is formed.

In the side stay mode, the lock mechanism 2007F coupled to the coupling portion 2061 of the second member 2006B is fixed to the left portion of the seatback frame 2010 on the opposite side to the side where the access groove 2075a is formed.

As shown in fig. 24, the lock mechanisms 2007E and 2007F are fixed to the front surface of a tube frame as the seat back frame 2010.

That is, the first member 2006A is coupled to the locking mechanism 2007A, the locking mechanism 2007C, or the locking mechanism 2007E. That is, the first member 2006A is provided on one side (right side) of the vehicle seat S.

The second member 2006B is coupled to the lock mechanism 2007B, the lock mechanism 2007D, or the lock mechanism 2007F. That is, the second member 2006B is provided on the other side (left side) in the vehicle seat S.

In the leg rest standard mode, the first member 2006A coupled to the lock mechanism 2007A and the second member 2006B coupled to the lock mechanism 2007B may be configured to be changeable in angle with respect to the seat cushion 2002 as shown in fig. 23.

The skin member 2004 includes the same material as the cover, such as leather and cloth.

In the leg rest standard mode, as shown in fig. 20 and 23, the skin member 2004 is detachably fixed to the seat cushion 2002 at one end by a known method such as a fastener (planar or linear), and is detachably fixed to the first member 2006A and the second member 2006B at the other end by a known method such as a fastener (planar or linear). At this time, the connecting portion 2061 and the connecting portion of the lock mechanism 2007 are not visible from the upward and forward directions by the skin member 2004.

In the armrest standard mode and the side stay standard mode, as shown in fig. 21 and 22, the skin member 2004 is detachably fixed at one end portion and the other end portion to the seat cushion 2002 by a known method such as a fastener (planar or linear).

As shown in fig. 27 to 30, the vehicle seat S has an indicator 2008.

Fig. 27 is a front view of the vehicle seat S in the leg rest standard mode shown in fig. 20. Fig. 28 is a front view of the vehicle seat S in the armrest specification mode shown in fig. 21. Fig. 29 is a front view of the vehicle seat S in the side stay mode shown in fig. 22. Fig. 30 is another example of a front view of the vehicle seat S in the armrest specification mode shown in fig. 21.

In fig. 27 to 30, the right side of the vehicle seat S is the vehicle outer side in the seat width direction, and the left side of the vehicle seat S is the vehicle inner side in the seat width direction.

As shown in fig. 27-30, the indicators 2008 include indicators 20088 a-20088 f.

The indicator 2008A indicates whether the coupling portion 2061 of the first member 2006A and the locking mechanism 2007A have been properly coupled.

In the example shown in fig. 27 to 29, the indicator 2008A is provided on the right side of the seat cushion 2002.

The indicator 2008B indicates whether the coupling portion 2061 of the second member 2006B and the locking mechanism 2007B are properly coupled.

In the example shown in fig. 27 to 29, the indicator 2008B is provided on the left side of the seat cushion 2002.

The indicator 2008C indicates whether the coupling portion 2061 of the first member 2006A and the locking mechanism 2007C are properly coupled.

In the example shown in fig. 27 to 29, the indicator 2008C is provided on the right side of the seat cushion 2002 and on the upper side of the indicator 2008A.

The indicator 2008D indicates whether the coupling portion 2061 of the second member 2006B and the locking mechanism 2007D are properly coupled.

In the example shown in fig. 27 to 29, the indicator 2008D is provided on the left side of the seat cushion 2002 and on the upper side of the indicator 2008B.

The indicator 2008E indicates whether the coupling portion 2061 of the first member 2006A and the locking mechanism 2007E are properly coupled.

In the example shown in fig. 27 to 29, the indicator 2008E is provided on the right side of the seatback 2001.

The indicator 2008F indicates whether the coupling portion 2061 of the second member 2006B and the locking mechanism 2007F are properly coupled.

In the example shown in fig. 27 to 29, the indicator 2008F is provided on the left side of the seatback 2001.

That is, the first indicators (the indicators 2008A, 2008C, 2008E) are provided on one side (right side) of the vehicle seat S.

The second indicators (indicator 2008B, indicator 2008D, indicator 2008F) are provided on the other side (left side) of the vehicle seat S.

Therefore, the positional relationship between the first member 2006A provided on one side and the first indicator and the positional relationship between the second member 2006B provided on the other side and the second indicator coincide. Therefore, the user easily recognizes the locked state of the first member 2006A and the second member 2006B.

The indicators 20088 a to 20088 d are provided on the front surface portion of the seat cushion 2002. The indicators 2008E and 2008F are provided on the front surface portion of the seatback 2001. Thus, the display of the indicators 268 a to 20088 f can be easily seen by a user such as a driver from the front direction of the vehicle seat S.

In addition, the position of the setting indicator 2008 is not limited to the example. The indicator 2008 may also be provided on a front surface portion below the seatback 2001, a front surface portion of the base cover 2009, or the like. In this case, the display of the indicators 268 a to 20080 f can be easily seen by a user such as a driver from the front direction of the vehicle seat S.

At least two indicators 2008 among the indicators 20088 a to 20088 f may be provided adjacent to each other in the vehicle seat S.

That is, the first indicator and the second indicator of the indicators 20080A to 20088F are disposed adjacently.

Fig. 30 is a front view of the vehicle seat S in the armrest standard mode in which the first indicator and the second indicator are provided adjacent to each other.

In the example shown in fig. 30, the indicator 2008A is adjacent to the indicator 2008B, the indicator 2008C is adjacent to the indicator 2008D, and the indicator 2008E is adjacent to the indicator 2008F and is provided to the vehicle seat S.

Thus, the user can recognize the first indicator and the second indicator at one time.

At least two of the indicators 2009 a to 20088 f may be provided at a distance shorter than the distance between the first member 2006A and the second member 2006B in the vehicle seat S.

That is, the distance between the first indicator and the second indicator among the indicators 20088 a to 20088 f provided in the vehicle seat S is shorter than the distance between the first member 2006A and the second member 2006B.

Thus, the first indicator and the second indicator are arranged in the proximity region within the predetermined distance, and thus the user can recognize the first indicator and the second indicator at one time.

In the example shown in fig. 30, the indicators 268 a to 20088 f are provided on the vehicle inside of the vehicle seat S.

That is, the first indicator and the second indicator are provided on the front side of the vehicle seat S and on the center side (vehicle inside) in the vehicle in the seat cushion 2002.

Thus, the display of the indicators 268 a to 20088 f can be easily seen by a user such as a driver from the front direction of the vehicle seat S.

Next, display of the indicator 2008 will be described.

The indicator 2008 displays "LOCKED (LOCKED)" indicating this when the coupling portion 2061 and the locking mechanism 2007 are properly coupled.

On the other hand, when the coupling portion 2061 and the locking mechanism 2007 are not coupled, the indicator 2008 displays "UNLOCK (UNLOCK)", which indicates this.

In the example shown in fig. 27, since the coupling portion 2061 of the first member 2006A and the locking mechanism 2007A have been properly coupled, the indicator 2008A displays "LOCKED (LOCKED)".

Further, since the coupling portion 2061 of the second member 2006B and the locking mechanism 2007B are properly coupled, the indicator 2008B displays "LOCKED (LOCKED)".

Further, since the connecting portion 2061 is not connected to the locking mechanisms 2007c to 2007f, the indicators 20088 c to 20088 f display "UNLOCK (UNLOCK)".

In the example shown in fig. 28 and 30, since the coupling portion 2061 of the first member 2006A and the lock mechanism 2007C are properly coupled, the indicator 2008C displays "LOCKED (LOCKED)".

Further, since the coupling portion 2061 of the second member 2006B and the locking mechanism 2007D are properly coupled, the indicator 2008D displays "LOCKED (LOCKED)".

Further, since the coupling portions 2061 are not coupled to the lock mechanisms 2007A, 2007B, 2007E, 2007F, the indicators 2008A, 2008B, 2008E, 2008F display "UNLOCK (UNLOCK)".

In the example shown in fig. 29, since the coupling portion 2061 of the first member 2006A and the locking mechanism 2007E have been properly coupled, the indicator 2008E displays "LOCKED (LOCKED)".

Further, since the coupling portion 2061 of the second member 2006B and the locking mechanism 2007F have been properly coupled, the indicator 2008F displays "LOCKED (LOCKED)".

Further, since the coupling portions 2061 are not coupled to the lock mechanisms 2007a to 2007d, the indicators 268 a to 20088 d display "UNLOCK (UNLOCK)".

Next, fig. 31A is a schematic view of the lock mechanism 2007 and the indicator 2008 in the unlocked state in which the coupling portion 2061 is not coupled. Fig. 31B is a schematic view of the lock mechanism 2007 and the indicator 2008, in which the locking state of the coupling portion 2061 is coupled.

As shown in fig. 31A and 31B, the indicator 2008 includes an unlock display portion 2081, a lock display portion 2082, a rotation gear 2083, a biasing member 2084 such as a spring or rubber, and a cover member 2085.

The cover member 2085 covers at least a part of the unlock display 2081 and the lock display 2082.

The cover member 2085 further covers the rotation gear 2083 and the urging member 2084.

The UNLOCK display portion 2081 is a member that displays "UNLOCK (UNLOCK)" indicating that the coupling portion 2061 and the locking mechanism 2007 are not coupled.

The lock display portion 2082 is a member that displays "LOCKED (LOCKED)" indicating that the coupling portion 2061 and the locking mechanism 2007 are properly coupled.

The unlock display portion 2081 has a driven gear 2081a on the lock display portion 2082 side.

The lock display portion 2082 has a driven gear 2082a on the unlock display portion 2081 side.

The driven gear 2081a and the driven gear 2082a are engaged with a rotation gear 2083 supported by a shaft in a region covered with the cover member 2085.

The unlock display portion 2081 is biased by a biasing member 2084 disposed in the region covered by the cover member 2085 in a direction extending from the opening 2085a of the cover member 2085 to the outside of the region covered by the cover member 2085. That is, the urging member 2084 urges the UNLOCK display section 2081 in a direction in which "UNLOCK (UNLOCK)" is displayed by the UNLOCK display section 2081.

The coupling member 2074 coupled to the ratchet wheel 2072 is coupled to the rotation gear 2083 in such a manner that the rotation gear 2083 is rotated clockwise when pulled toward the ratchet wheel 2072 side.

When the coupling portion 2061 engages with the latch 2071 of the lock mechanism 2007 as shown in fig. 31B from the state where the unlock display portion 2081 is projected out of the area covered by the cover member 2085 as shown in fig. 31A, the latch 2071 rotates counterclockwise about the rotation shaft 2071B.

The latch 2071 is engaged with the ratchet 2072 by rotating counterclockwise about the rotation shaft 2071b, and at the same time, the ratchet 2072 rotates counterclockwise about the rotation shaft 2072 a. Thereby, the connecting member 2074 is pulled toward the lock mechanism 2007 side, and thereby the rotation gear 2083 rotates clockwise.

At this time, the rotation motion of the rotation gear 2083 is transmitted to the driven gear 2081a, and the unlock display portion 2081 is stored in the area covered by the cover member 2085 against the urging force of the urging member 2084.

The rotation of the rotation gear 2083 is transmitted to the driven gear 2082a, and the lock display portion 2082 extends from the opening 2085a to the outside of the area covered by the cover member 2085.

In the locked state shown in fig. 31B in which the coupling portion 2061 is engaged by the latch 2071, the locking mechanism 2007 continues to pull the connecting member 2074 toward the locking mechanism 2007 side, and therefore the lock display portion 2082 continues to extend beyond the area covered by the cover member 2085. That is, the lock display section 2082 continuously displays "LOCKED (LOCKED)".

When the coupling portion 2061 is not properly engaged with the latch 2071, the lock display portion 2082 does not protrude beyond the area covered by the cover member 2085, and thus does not display "LOCKED".

Thus, the user (an occupant of the vehicle, etc.) can recognize this state if the coupling portion 2061 is not properly engaged with the latch 2071 even though it is estimated that the first member 2006A or the second member 2006B has been mounted to the lock mechanism 2007.

In addition, a case will be described in which, in a state where the lock display portion 2082 shown in fig. 31B is extended beyond the area covered by the cover member 2085, the user pushes the lock display portion 2082 in a direction of being housed in the area covered by the cover member 2085.

At this time, the lock display portion 2082 is stored in the area covered by the cover member 2085, and thus does not display "LOCKED (LOCKED)".

Then, as the lock display portion 2082 is stored in the area covered by the cover member 2085, the rotation gear 2083 rotates counterclockwise.

Then, by rotating the rotation gear 2083 in the counterclockwise direction, the urging member 2084 exerts an urging force, and the UNLOCK display portion 2081 protrudes from the opening 2085a to the outside of the area covered by the cover member 2085, thereby displaying "UNLOCK (UNLOCK)".

Further, by the rotation gear 2083 rotating around the counterclockwise direction, the connecting member 2074 is pulled toward the rotation gear 2083 side, and thereby the ratchet wheel 2072 rotates clockwise around the rotation shaft 2072 a. When the ratchet 2072 is disengaged from the latch 2071, the latch rotates clockwise about the rotation shaft 2071b to open the coupling portion 2061. This allows the coupling portion 2061 to be detached from the lock mechanism 2007.

The structures of the lock mechanism 2007 and the indicator 2008 are not limited to this example. For example, by improving the engagement between the latch 2071 and the ratchet 2072, the coupling portion 2061 may be detached from the lock mechanism 2007 even if the user does not push the lock display portion 2082 into the region covered by the cover member 2085.

That is, the vehicle seat S includes a first connecting member (connecting member 2074), and the first connecting member (connecting member 2074) connects the first indicator (indicators 2008A, 2008C, 2008E) to a first lock mechanism (lock mechanisms 2007A, 2007C, 2007E) of the lock mechanisms 2007 that locks the first member 2006A.

The first indicator includes a first display portion (unlock display portion 2081) for displaying an unlock state of the first member 2006A and the first lock mechanism, a second display portion (lock display portion 2082) for displaying a lock state of the first member 2006A and the first lock mechanism, and a biasing member 2084 for biasing to display the first display portion.

When the first member 2006A is locked to the first locking mechanism, the first indicator is pulled toward the first locking mechanism side, and thereby the first indicator does not display the first display portion against the urging member 2084, and the second display portion is displayed.

The vehicle seat S further includes a second connecting member (connecting member 2074), and the second connecting member (connecting member 2074) connects the second indicator (indicators 2008B, 2008D, 2008F) to the second lock mechanism (lock mechanisms 2007B, 2007D, 2007F) of the lock mechanisms 2007 that lock the second member 2006B.

The second indicator includes a third display portion (unlock display portion 2081) for displaying an unlock state of the second member 2006B and the second lock mechanism, a fourth display portion (lock display portion 2082) for displaying a lock state of the second member 2006B and the second lock mechanism, and an urging member 2084 for urging force to display the third display portion.

When the second member 2006B is locked to the second locking mechanism, the second indicator is pulled toward the second locking mechanism side, and thereby the third display portion is not displayed against the urging member 2084, and the fourth display portion is displayed.

Next, an assembling structure of the connecting member 2074 will be described.

Fig. 32 is a diagram showing an assembly structure of the first connecting member 2074a and the second connecting member 2074b as the connecting members 2074.

As shown in fig. 32, the seat cushion frame 2020 includes a compression member 2021.

The pressure receiving member 2021 is a member that receives the load of an occupant seated in the vehicle seat S and includes a metal or resin plate material.

In the example shown in fig. 32, the first connecting member 2074a connects the indicator 2008C with the locking mechanism 2007C that locks the first member 2006A.

Further, the second connecting member 2074B connects the indicator 2008D with the lock mechanism 2007D that locks the second member 2006B.

A part of the first connecting member 2074a and the second connecting member 2074b is disposed on a surface (back surface) of the pressure receiving member 2021 on the lower side. In fig. 32, portions of the first and second connecting members 2074a and 2074b, which are disposed on the rear surface of the pressure receiving member 2021, are shown in broken lines.

FIG. 33 shows a cross-sectional view at section line XIV-XIV shown in FIG. 32. Fig. 34 shows a cross-sectional view at the section line XV-XV shown in fig. 32.

As shown in fig. 33 and 34, two concave portions 2021a that are long in the front-rear direction are formed in the pressure receiving member 2021 in parallel in the left-right direction.

Two clip locking holes 2021b are formed in the recess 2021a in parallel in the front-rear direction, respectively. The number of clip locking holes 2021b is not limited to the examples shown in fig. 33 and 34.

The clips 2021c attached to the first connecting member 2074a or the second connecting member 2074b are respectively press-fitted into the clip locking holes 2021b. Thereby, the first and second connecting members 2074a and 2074b are mounted to the rear surface of the pressure receiving member 2021. At this time, the clip 2021c is pressed from the back surface of the pressure receiving member 2021, and the clip 2021c protrudes from the surface (upper surface) of the pressure receiving member 2021.

The height of the portion of the clip 2021c protruding upward from the surface of the pressure receiving member 2021 is substantially equal to the depth of the recess 2021 a.

As shown in fig. 34, the pressure receiving member 2021 is provided so as to be inclined downward from the front direction toward the rear direction.

The first and second connecting members 2074a and 2074b attached by the clip 2021c are arranged along the rear surface of the pressure receiving member 2021 inclined downward from the front direction toward the rear direction. That is, by disposing the first connecting member 2074a and the second connecting member 2074b in the space below the pressure receiving member 2021, the space below the pressure receiving member 2021 can be effectively utilized.

Fig. 35 shows another example of a seat frame (a seat back frame 2010 and a seat cushion frame 2020) included in the vehicle seat S. Fig. 36 shows a cross-sectional view at section line XVII-XVII shown in fig. 35. In fig. 35, the lock mechanism 2007 is omitted.

In the example shown in fig. 35 and 36, the seat cushion frame 2020 includes a compression member 2021A.

The pressure receiving member 2021A is, for example, a member formed by press molding a plate-like member made of metal such as iron or aluminum, or a member formed of a resin member such as fiber reinforced plastic (Fiber Reinforced Plastic, FRP). As shown in fig. 36, the pressure receiving member 2021A has a shape recessed downward, and is configured such that the entire pressure receiving member 2021A supports the buttocks of the occupant seated in the vehicle seat S.

More specifically, the pressure receiving member 2021A has a bottom portion 2021Aa provided at a lower level than other portions in a central portion in the lateral direction. Further, from the right side portion of the bottom portion 2021Aa, an inclined portion 2021Ab is provided which is inclined upward as going to the right direction. Further, from the left side portion of the bottom portion 2021Aa, an inclined portion 2021Ac is provided which is inclined upward as going to the left direction.

As shown in fig. 36, the first connecting member 2074a is attached to the rear surface (the surface on the lower side) of the inclined portion 2021 Ab.

The second connecting member 2074b is attached to the rear surface (the surface on the lower side) of the inclined portion 2021 Ac.

Fig. 37 shows another example of the assembly structure of the first connecting member 2074a and the second connecting member 2074 b.

As shown in fig. 37, the seat cushion frame 2020 includes a side frame 2022a on a right side and a side frame 2022b on a left side.

The side frames 2022a, 2022b are members having a substantially laterally symmetrical structure, and extend in the seat front-rear direction.

As shown in fig. 37, the first connecting member 2074a is assembled along the inner side (left side) of the side frame 2022a, and the second connecting member 2074b is assembled along the inner side (right side) of the side frame 2022 b.

In fig. 37, a portion of the second connecting member 2074b disposed at a position where it is not visible is shown by a broken line.

Fig. 38 shows a cross-sectional view at the section line XIX-XIX shown in fig. 37. FIG. 39 shows a cross-sectional view taken along section line XX-XX shown in FIG. 37.

As shown in fig. 38 and 39, the first connecting member 2074a is assembled along the side frame 2022a together with the harness 2030 for electric equipment, and is fixed to the side frame 2022a by the connecting member 2040.

The electrical equipment harness 2030 is, for example, a harness for a seat heater or the like disposed in the vehicle seat S.

The coupling member 2040 is, for example, a strapping.

In addition, similarly to the first connecting member 2074a, the second connecting member 2074b is assembled along the side frame 2022b together with the harness 2030 for electric equipment, and is fixed to the side frame 2022b by the connecting member 2040.

In this way, the first connecting member 2074a and the second connecting member 2074b can be assembled together with other wire harnesses such as the wire harness 2030 for electric devices. Therefore, the risk of interference between the first and second connecting members 2074a, 2074b and other components can be reduced.

The cover member 2085 shown in fig. 31A and 31B may be provided for each of the indicators 20088 a to 20088 f, or may be provided as a common cover member covering a plurality of indicators 2008 when the indicators 2008 are provided adjacent to each other.

That is, in the case where the cover member 2085 is provided corresponding to each of the indicators 20088 a to 20088 f, a first indicator of the indicators 20088 a to 20088 f is covered by the first cover member, and a second indicator of the indicators 20088 a to 20088 f is covered by the second cover member.

When the cover member 2085 is provided as a common cover member covering the plurality of indicators 2008, the first indicator (for example, the indicator 2008A) and the second indicator (for example, the indicator 2008B) among the indicators 20088A to 20088 f are covered with the common cover member.

In the above embodiment, an example is shown in which one of the two catches (the coupling portion 2061) of the first member 2006A or the second member 2006B is engaged with the latch 2071 of the lock mechanism 2007, and the indicator 2008 connected to the lock mechanism 2007 indicates whether the coupling portion 2061 and the lock mechanism 2007 are properly coupled, but the present invention is not limited thereto.

The vehicle seat S may include a lock mechanism 2007 connected to two catches (connecting portions 2061) provided in the first member 2006A and the second member 2006B, respectively, and an indicator 2008 connected to each lock mechanism 2007. That is, the vehicle seat S may include two lock mechanisms 2007 and indicators 2008, respectively, corresponding to the first member 2006A and the second member 2006B.

Alternatively, the vehicle seat S may include a lock mechanism 2007 coupled to two catches (coupling portions 2061) provided in the first member 2006A or the second member 2006B, respectively, and the two lock mechanisms 2007 may be coupled to each other, and include one indicator 2008 connected to the two coupled lock mechanisms 2007.

The indicator 2008 is not limited to the structure that is physically connected to the lock mechanism 2007 through the connecting member 2074 in this way. The indicator 2008 may also be electrically connected to the locking mechanism 2007.

The vehicle seat S may also include a notification unit that notifies a user such as a vehicle occupant of whether the coupling portion 2061 of the first member 2006A or the second member 2006B and the locking mechanism 2007 are properly coupled, by sound.

The vehicle seat S may include the notification portion without the indicator 2008.

As shown in fig. 40, the vehicle seat S includes a mounting portion cover 2011. Fig. 40 is a view of the vehicle seat S from above.

The mounting portion cover 2011 is provided to the seat cushion 2002 in the leg rest standard mode and the armrest standard mode. In other words, the mounting portion cover 2011 is located between the seat cushion 2002 and the first member 2006A or the second member 2006B when the first member 2006A or the second member 2006B is coupled to the lock mechanism 2007.

The mounting portion cover 2011 is provided on the seatback 2001 in the side stay standard mode. In other words, the mounting portion cover 2011 is located between the seatback 2001 and the first member 2006A or the second member 2006B when the first member 2006A or the second member 2006B is coupled to the lock mechanism 2007.

The mounting portion cover 2011 has a mounting hole 2011a for inserting the coupling portion 2061 of the first member 2006A or the second member 2006B.

When the coupling portion 2061 of the first member 2006A or the second member 2006B is coupled to the lock mechanism 2007, the mounting hole 2011a is marked (guided), and therefore the mounting workability of the first member 2006A or the second member 2006B can be improved.

The direction of the connecting portion 2061 (locking) with respect to the cushion portion 2062 in the first member 2006A or the second member 2006B is not limited to the example shown in fig. 25. The direction of the mounting hole 2011a with respect to the mounting portion cover 2011 is not limited to the example shown in fig. 40.

The direction of the mounting hole 2011a may be a direction corresponding to the direction of the lock catch (the connecting portion 2061) provided in the first member 2006A or the second member 2006B.

Fig. 41A to 41D illustrate examples of the first member 2006A and the second member 2006B. Fig. 42A to 42D show examples of the mounting portion cover 2011 corresponding to the direction of the lock catch (the connecting portion 2061) of the first member 2006A and the second member 2006B shown in fig. 41A to 41D.

As shown in fig. 41A, when the two coupling portions 2061 of the first member 2006A and the second member 2006B are U-shaped in side view (when viewed from the left-right direction), the longitudinal direction of the two mounting holes 2011A of the mounting cover 2011 is the front-rear direction as shown in fig. 42A.

At this time, the mounting portion cover 2011 can be miniaturized in the left-right direction.

As shown in fig. 41B, when the two coupling portions 2061 of the first member 2006A and the second member 2006B are U-shaped in front view (when viewed from the front-rear direction), the longitudinal direction of the two mounting holes 2011a of the mounting cover 2011 is the left-right direction as shown in fig. 42B.

At this time, the mounting portion cover 2011 can be miniaturized in the front-rear direction.

As shown in fig. 41C and 41D, one of the coupling portions 2061 of the first member 2006A and the second member 2006B has a U-shape when viewed from the side (when viewed from the left-right direction), and the other coupling portion 2061 has a U-shape when viewed from the front (when viewed from the front-rear direction).

At this time, when the coupling portion 2061 is locked to the locking mechanism 2007, the coupling portion 2061 is positioned in the front-rear direction and the left-right direction. Therefore, the coupling portion 2061 can be prevented from rocking relative to the lock mechanism 2007.

As shown in fig. 43, the indicator 2008 may be provided in an instrument panel I included in the vehicle 2100 provided with the vehicle seat S. The vehicle seat SA provided in the vehicle 2100 is a driver's seat.

In the example shown in fig. 43, the first member 2006A is not provided in the vehicle seat S, and the second member 2006B is provided as a left armrest of the vehicle seat S. At this time, as shown in fig. 43, the indicator 2008C displays "UNLOCK (UNLOCK)", and the indicator 2008D displays "LOCKED (LOCKED)".

The indicator 2008CA and the indicator 2008DA are provided in the instrument panel I.

The indicator 2008CA is linked by being physically and electrically connected to an indicator 2008C provided in the vehicle seat S by a wire or a cable.

Therefore, as with the indicator 2008C, the indicator 2008CA displays "UNLOCK (UNLOCK)".

The indicator 2008DA is coupled to an indicator 2008D provided in the vehicle seat S by a wire or a cable, for example, by physical or electrical connection.

Therefore, as with the indicator 2008D, the indicator 2008DA displays "LOCKED (LOCKED)".

As shown in fig. 44, the vehicle 2100 may include a first vehicle seat S1 and a second vehicle seat S2.

Like the vehicle seat S, the first vehicle seat S1 includes a seat body Sh, a skin member 2004, a connecting member 2005, detachable first and second members 2006A and 2006B, a lock mechanism 2007, an indicator 2008, a base cover 2009, a support member 2009a, and an attachment cover 2011.

Specifically, the first vehicle seat S1 includes an indicator 2008Aa (first indicator) indicating whether the coupling portion 2061 of the first member 2006A and the lock mechanism 2007 are properly coupled as the indicator 2008.

The first vehicle seat S1 includes an indicator 2008Ba (second indicator) indicating whether the coupling portion 2061 of the second member 2006B and the lock mechanism 2007 are properly coupled as the indicator 2008.

As shown in fig. 44, the first member 2006A is provided on one side (right side) of the first vehicle seat S1.

The second member 2006B is provided on the other side (left side) of the first vehicle seat S1.

The indicator 2008Aa (first indicator) is provided on the front side of the seat cushion 2002 of the first vehicle seat S1 and on the center side in the vehicle, and is located on one side (right side) of the first vehicle seat S1 than the indicator 2008Ba (second indicator).

The indicator 2008Ba (second indicator) is provided on the front side of the seat cushion 2002 of the first vehicle seat S1 and on the center side in the vehicle, and on the other side (left side) of the first vehicle seat S1 than the indicator 2008Aa (first indicator).

The second vehicle seat S2 includes a seat body Sh, a skin member 2004, a connecting member 2005, detachable third and fourth members 2006C and 2006D, a lock mechanism 2007, an indicator 2008, a base cover 2009, a support member 2009a, and a mounting cover 2011. The third member 2006C and the fourth member 2006D have the same structure as the first member 2006A and the second member 2006B.

Specifically, the second vehicle seat S2 includes an indicator 2008Ca (third indicator) indicating whether or not the coupling portion 2061 of the third member 2006C and the lock mechanism 2007 are properly coupled as the indicator 2008.

The second vehicle seat S2 includes an indicator 2008Da (fourth indicator) indicating whether or not the coupling portion 2061 of the fourth member 2006D and the lock mechanism 2007 are properly coupled as the indicator 2008.

As shown in fig. 44, the third member 2006C is provided on one side (right side) of the second vehicle seat S2.

The fourth member 2006D is provided on the other side (left side) of the second vehicle seat S2.

The indicator 2008Ca (third indicator) is provided on the front side of the seat cushion 2002 of the second vehicle seat S2 and on the center side in the vehicle, and on one side (right side) of the second vehicle seat S2 than the indicator 2008Da (fourth indicator).

The indicator 2008Da (fourth indicator) is provided on the front side of the seat cushion 2002 of the second vehicle seat S2 and on the center side in the vehicle, and on the other side (left side) of the second vehicle seat S2 than the indicator 2008Ca (third indicator).

With the above configuration, the first indicator, the second indicator, the third indicator, and the fourth indicator can be recognized by a user such as a driver from the front direction of the vehicle seat S at one time.

In addition, the lock mechanism 2007 may also be provided to the body of the vehicle 2100. At this time, the first member 2006A, the second member 2006B, the third member 2006C, and the fourth member 2006D are coupled to a lock mechanism 2007 provided in the vehicle body.

That is, the vehicle 2100 includes a first vehicle seat S1, the first vehicle seat S1 including a first member 2006A and a second member 2006B as occupant supporting members, which are locked to a locking mechanism 2007 provided to a vehicle body or the first vehicle seat S1, a first indicator (indicator 2008 Aa) indicating a locked state of the first member 2006A, and a second indicator (indicator 2008 Ba) indicating a locked state of the second member 2006B.

The vehicle 2100 includes a second vehicle seat S2, and the second vehicle seat S2 includes a third member 2006C and a fourth member 2006D as occupant supporting members, a locking mechanism 2007 that is locked to the vehicle body or the second vehicle seat S2, a third indicator (indicator 2008 Ca) indicating a locked state of the third member 2006C, and a fourth indicator (indicator 2008 Da) indicating a locked state of the fourth member 2006D.

The first member 2006A is provided on one side of the first vehicle seat S1, and the third member 2006C is provided on one side of the second vehicle seat S2.

The second member 2006B is provided on the other side of the first vehicle seat S1, and the fourth member 2006D is provided on the other side of the second vehicle seat S2.

The first indicator (indicator 2008 Aa) is provided on one side of the first vehicle seat S1 than the second indicator (indicator 2008 Ba). The third indicator (indicator 2008 Ca) is provided on one side of the second vehicle seat S2 than the fourth indicator (indicator 2008 Da).

The second indicator (indicator 2008 Ba) is provided on the other side of the first vehicle seat S1 than the first indicator (indicator 2008 Aa). The fourth indicator (indicator 2008 Da) is provided on the other side of the second vehicle seat S2 than the third indicator (indicator 2008 Ca).

The first indicator (indicator 2008 Aa), the second indicator (indicator 2008 Ba), the third indicator (indicator 2008 Ca), and the fourth indicator (indicator 2008 Da) are provided on the front side of the seat cushion 2002 and on the center side in the vehicle.

Next, a method of manufacturing the vehicle seat S will be described.

The operator first sets the lock mechanism 2007 in the vehicle seat S (first step).

Next, the operator sets a first indicator (indicators 2008A, 2008C, 2008E) indicating the locked state of the first member 2006A and a second indicator (indicators 2008B, 2008D, 2008F) indicating the locked state of the second member 2006B in the vehicle seat S (second step).

The operator sets the first member 2006A on one side (for example, the right side) of the vehicle seat S, and sets the second member 2006B on the other side (for example, the left side) of the vehicle seat S (third step).

In the second step, the operator sets the first indicator on one side of the vehicle seat S and sets the second indicator on the other side of the vehicle seat S.

In the second step, the operator may set the first indicator and the second indicator adjacent to each other.

In the second step, the operator may set the first indicator and the second indicator so that the distance between the first indicator and the second indicator is shorter than the distance between the first member 2006A and the second member 2006B.

In the second step, the operator may set the first indicator and the second indicator on the front side of the seat cushion included in the vehicle seat S and on the center side in the vehicle.

In the second step, the operator sets a first indicator covered with the first cover member (cover member 2085) and a second indicator covered with the second cover member (cover member 2085).

In the second step, the operator may set the first indicator and the second indicator covered with the common cover member.

In the second step, the operator sets a first connecting member (connecting member 2074) for connecting the first indicator to a first lock mechanism (lock mechanisms 2007A, 2007C, 2007E) of the lock mechanism 2007 that locks the first member 2006A in the vehicle seat S.

In the second step, the operator sets a second connecting member (connecting member 2074) for connecting the second indicator to a second lock mechanism (lock mechanisms 2007B, 2007D, 2007F) of the lock mechanisms that locks the second member 2006B in the vehicle seat S.

In the third step, the operator may set the first member 2006A and the second member 2006B so as to function as an armrest.

In the third step, the operator may set the first member 2006A and the second member 2006B so as to function as side stays.

Through the above steps, the vehicle seat S is manufactured.

The operator may also install the lock mechanism 2007 on the vehicle body. At this time, the operator connects the first member 2006A and the second member 2006B to a lock mechanism 2007 provided to the vehicle body.

As described above, the vehicle seat S in the present embodiment includes the first member 2006A and the second member 2006B as occupant supporting members, which are locked to the locking mechanism 2007 provided to the vehicle body or the vehicle seat S, the first indicators (indicators 2008A, 2008C, 2008E) indicating the locked state of the first member 2006A, and the second indicators (indicators 2008B, 2008D, 2008F) indicating the locked state of the second member 2006B.

Therefore, the locked state of the first member 2006A and the second member 2006B with respect to the lock mechanism 2007 can be represented. That is, the user of the occupant or the like can recognize whether the occupant supporting member (the first member 2006A and the second member 2006B) has been properly mounted.

In the vehicle seat S of the present embodiment, the first member 2006A is provided on one side of the vehicle seat S, the second member 2006B is provided on the other side of the vehicle seat S, the first indicators (indicators 2008A, 2008C, 2008E) are provided on one side of the vehicle seat S, and the second indicators (indicators 2008B, 2008D, 2008F) are provided on the other side of the vehicle seat S.

In the vehicle seat S of the present embodiment, the first indicators (indicators 2008A, 2008C, 2008E) and the second indicators (indicators 2008B, 2008D, 2008F) are provided adjacent to each other.

In the vehicle seat S according to the present embodiment, the distance between the first indicator (indicators 2008A, 2008C, 2008E) and the second indicator (indicators 2008B, 2008D, 2008F) is shorter than the distance between the first member 2006A and the second member 2006B.

The vehicle seat S in the present embodiment includes a seat cushion 2002, and the first indicator (indicators 2008A, 2008C, 2008E) and the second indicator (indicators 2008B, 2008D, 2008F) are provided on the front side of the vehicle seat S in the seat cushion 2002 and on the center side in the vehicle.

Thus, when the first indicator and the second indicator are confirmed from the front direction of the vehicle seat S, the user located in the front direction of the vehicle seat S can easily recognize the first indicator and the second indicator.

The above-described case is, for example, a case where the first indicator and the second indicator included in the vehicle seat S, which are rear seats, are confirmed from the driver' S seat.

That is, the display of the first indicator and the second indicator can be easily seen by a user such as a driver.

In the vehicle seat S according to the present embodiment, the first indicator (indicators 2008A, 2008C, 2008E) is covered with the first cover member (cover member 2085), and the second indicator (indicators 2008B, 2008D, 2008F) is covered with the second cover member (cover member 2085).

Therefore, the first indicator and the second indicator can be covered with the separate cover member 2085.

In the vehicle seat S of the present embodiment, the first indicator (indicators 2008A, 2008C, 2008E) and the second indicator (indicators 2008B, 2008D, 2008F) are covered with a common cover member.

Thus, the number of parts can be reduced as compared with a structure in which the first indicator and the second indicator are covered with separate cover members.

The vehicle seat S according to the present embodiment includes a first connecting member (connecting member 2074) for connecting the first indicator (indicators 2008A, 2008C, 2008E) to the first lock mechanism (lock mechanisms 2007A, 2007C, 2007E) of the lock mechanism 2007 to lock the first member 2006A, the first indicator including a first display portion (unlock display portion 2081) for displaying an unlock state of the first member 2006A and the first lock mechanism, a second display portion (lock display portion 2082) for displaying a lock state of the second member 2006A and the first lock mechanism, and a biasing member 2084 for biasing to display the first display portion, whereby the first connecting member is pulled toward the first lock mechanism side against the biasing member 2084 without displaying the first display portion, and on the other hand, the second display portion is displayed, and the vehicle seat S includes a second connecting member (connecting member 2082) for displaying an unlock state of the first member 2006A and the first lock mechanism, the second display portion (lock display portion 2007) for displaying a lock state of the second member 2006A and the first lock mechanism, and a biasing member 2084 for displaying the first display portion, and a biasing member 2007B, and a lock state of the second member 2007B (lock mechanism), and a lock state of the second member 2007B, and a lock mechanism 2008 (lock state of the second member 2007) for locking the first member 2007B), and a lock state of the second member 2007B (lock mechanism, 2007B) are displayed, in the case where the second member 2006B is locked to the second locking mechanism, the second connecting member is pulled toward the second locking mechanism side, whereby the third display portion is not displayed against the urging member 2084, and on the other hand, the fourth display portion is displayed.

Therefore, the indicator 2008 can be configured with a simple structure.

In the vehicle seat S of the present embodiment, the first member 2006A and the second member 2006B are armrests.

This can indicate the locked state of the lock mechanism 2007 when the first member 2006A and the second member 2006B are caused to function as armrests.

In the vehicle seat S of the present embodiment, the first member 2006A and the second member 2006B are side brackets.

This can indicate the locked state of the lock mechanism 2007 when the first member 2006A and the second member 2006B are caused to function as side stays.

A method of manufacturing the vehicle seat S according to the present embodiment will be described. Specifically, the method for manufacturing a vehicle seat S including a first member 2006A and a second member 2006B as occupant supporting members, which are locked to a locking mechanism 2007 provided to a vehicle body or the vehicle seat S, a first indicator (indicators 2008A, 2008C, 2008E) indicating a locked state of the first member 2006A, and a second indicator (indicators 2008B, 2008D, 2008F) indicating a locked state of the second member 2006B, includes a first step of providing the locking mechanism 2007 to the vehicle seat S, and a second step of providing the first indicator and the second indicator to the vehicle seat S.

Therefore, the vehicle seat S can show the locked state of the first member 2006A and the second member 2006B with respect to the lock mechanism 2007. That is, the vehicle seat S can be manufactured in which a user such as an occupant can recognize whether or not the occupant supporting members (the first member 2006A and the second member 2006B) have been properly mounted.

In the method of manufacturing the vehicle seat S according to the present embodiment, the first member 2006A is provided on one side of the vehicle seat S, the second member 2006B is provided on the other side of the vehicle seat S, the first indicator (indicators 2008A, 2008C, 2008E) is provided on one side of the vehicle seat S, and the second indicator (indicators 2008B, 2008D, 2008F) is provided on the other side of the vehicle seat S.

Therefore, in the vehicle seat S, the positional relationship between the first member 2006A provided on one side and the first indicator and the positional relationship between the second member 2006B provided on the other side and the second indicator coincide. Therefore, the vehicle seat S can be manufactured in which the user can easily recognize the locked state of the first member 2006A and the second member 2006B.

In the method of manufacturing the vehicle seat S according to the present embodiment, the first indicators (indicators 2008A, 2008C, 2008E) and the second indicators (indicators 2008B, 2008D, 2008F) are provided adjacent to each other.

This makes it possible to manufacture the vehicle seat S in which the user can recognize the first indicator and the second indicator at one time.

In the method of manufacturing the vehicle seat S according to the present embodiment, the distance between the first indicator (indicators 2008A, 2008C, 2008E) and the second indicator (indicators 2008B, 2008D, 2008F) is shorter than the distance between the first member 2006A and the second member 2006B.

Thus, in the vehicle seat S, the first indicator and the second indicator are disposed in the proximity region within the predetermined distance. Therefore, the vehicle seat S can be manufactured in which the user can recognize the first indicator and the second indicator at one time.

In the method of manufacturing the vehicle seat S according to the present embodiment, the vehicle seat S includes the seat cushion 2002, and the first indicator (indicators 2008A, 2008C, 2008E) and the second indicator (indicators 2008B, 2008D, 2008F) are provided on the front side of the vehicle seat S in the seat cushion 2002 and on the center side in the vehicle.

That is, the vehicle seat S can be manufactured such that the display of the first indicator and the second indicator can be easily seen by the user such as the driver.

In the method of manufacturing the vehicle seat S according to the present embodiment, the first indicator (indicators 2008A, 2008C, 2008E) is covered with the first cover member (cover member 2085), and the second indicator (indicators 2008B, 2008D, 2008F) is covered with the second cover member (cover member 2085).

Thus, the vehicle seat S having the structure in which the first indicator and the second indicator are covered with the separate cover members 2085 can be manufactured.

In the method of manufacturing the vehicle seat S according to the present embodiment, the first indicator (indicators 2008A, 2008C, 2008E) and the second indicator (indicators 2008B, 2008D, 2008F) are covered with a common cover member.

Thus, the vehicle seat S can be manufactured with a smaller number of parts than a structure in which the first indicator and the second indicator are covered with separate cover members.

In the method of manufacturing the vehicle seat S according to the present embodiment, the vehicle seat S includes a first connecting member (connecting member 2074) for connecting the first indicator (indicators 2008A, 2008C, 2008E) to the first lock mechanism (lock mechanisms 2007A, 2007C, 2007E) of the lock mechanism 2007, the first indicator including a first display portion (unlock display portion 2081) for displaying an unlock state of the first member 2006A and the first lock mechanism, a second display portion (lock display portion 2082) for displaying a lock state of the first member 2006A and the first lock mechanism, and a biasing member 2084 for biasing the first display portion, the first connecting member being pulled toward the first lock mechanism side in a case where the first member 2006A is locked to the first lock mechanism, whereby the biasing member 2084 is overcome without displaying the first display portion, and on the other hand, the vehicle seat S including a second display portion (lock display portion 2082) for connecting the second member 2006A and the first lock mechanism, and the second lock mechanism (lock display portion 2007) for displaying a lock state of the first member 2006A and the first lock mechanism, and the first display portion (lock display portion 2084), and a biasing the biasing member 2084 for displaying a lock state of the first lock mechanism, and the first connecting member 2006B (lock mechanism, the second display portion 2007) and the second display portion 2008B (lock display portion 2007) are connected to the second indicator 2007B, and the second display portion (lock display portion 2008B) and the lock mechanism, and the fourth display portion (lock display portion 2007) are further connected to each other, in the case where the second member 2006B is locked to the second locking mechanism, the second connecting member is pulled toward the second locking mechanism side, whereby the third display portion is not displayed against the urging member 2084, and on the other hand, the fourth display portion is displayed.

Therefore, the vehicle seat S in which the indicator 2008 has a simple structure can be manufactured.

In the method of manufacturing the vehicle seat S according to the present embodiment, the first member 2006A and the second member 2006B are armrests.

As a result, the vehicle seat S can be manufactured in which the locking state of the locking mechanism 2007 can be expressed when the first member 2006A and the second member 2006B are each caused to function as armrests.

In the method of manufacturing the vehicle seat S according to the present embodiment, the first member 2006A and the second member 2006B are side brackets.

Thus, the vehicle seat S can be manufactured in which the locked state of the lock mechanism 2007 can be displayed when the first member 2006A and the second member 2006B are each made to function as side stays.

The embodiment to which the invention related to the vehicle seat is applicable is not limited to the above embodiment, and may be modified as appropriate within a range not departing from the gist of the invention related to the vehicle seat.

For example, in the embodiment, the first member 2006A is provided on the right side in the vehicle seat S, and the second member 2006B is provided on the left side in the vehicle seat S, but the present invention is not limited thereto.

The first member 2006A may be provided on an upper side of the vehicle seat S, and the second member 2006B may be provided on a lower side of the vehicle seat S.

Fig. 45 is a front view of the vehicle seat S in the leg rest standard mode in this case.

Further, the first member 2006A may be provided on the front side of the vehicle seat S, and the second member 2006B may be provided on the rear side of the vehicle seat S.

Fig. 46 is a side view of the vehicle seat S in the armrest standard mode in this case.

In the above embodiment, the seat back frame 2010 and the seat cushion frame 2020 are pipe frames, but the present invention is not limited thereto.

The seat back frame 2010 and the seat cushion frame 2020 may be plate-shaped side frames.

At this time, the locking mechanism 2007 is fixed to the upper surface (or side surface) of the side frame.

Fig. 47A shows another example of the lock mechanism 2007 and the indicator 2008 in the unlocked state in which the coupling portion 2061 is not coupled. Fig. 47B shows another example of the lock mechanism 2007 and the indicator 2008, in which the locking state of the coupling portion 2061 is coupled.

In the example shown in fig. 47A, 47B, the locking mechanism 2007 includes a latch 2071A connected to a connecting member 2074.

When the coupling portion 2061 is inserted into the engagement groove 2071Aa of the latch 2071A as shown in fig. 47B from the unlocked state shown in fig. 47A, the latch 2071A rotates clockwise about the rotation shaft 2071 Ab. By the latch 2071A rotating clockwise about the rotation shaft 2071Ab, the connection member 2074 is pulled toward the latch 2071A side, whereby the rotation gear 2083 rotates clockwise.

Then, the rotation of the rotation gear 2083 is transmitted to the driven gear 2082a, and the lock display portion 2082 protrudes from the opening 2085a to the outside of the area covered by the cover member 2085, thereby displaying "LOCKED (LOCKED)".

Embodiment relating to a vehicle seat

Embodiments related to a vehicle seat will be described below with reference to fig. 48 to 52. However, the following embodiments are given various technical limitations that are preferable for the implementation of the present invention, but the technical scope of the present invention is not limited to the following embodiments and examples.

[ Background of the embodiment ]

Conventionally, among various vehicles typified by automobiles, there is known a vehicle seat provided in a state where a space such as a rear seat or a trunk is provided in the rear.

The vehicle seat of japanese patent application laid-open No. 2001-112576 has a structure in which an armrest is held by an armrest bracket joined to a seat back frame. Further, a pin serving as a rotation shaft is provided to protrude laterally from a side surface of the armrest, and a notch for inserting the pin is formed in the armrest bracket. The armrest can be easily attached to and detached from the seat back by inserting and removing the pins through the notches of the armrest bracket.

[ Problem of the present embodiment ]

In the case of a vehicle seat provided in a state where there is a space in the rear, for example, when a person collides with a luggage or the luggage collides with the seat back, a predetermined load is input from the rear space, and the seat back frame may be deformed. Further, if the seat back frame is deformed in this way, it is considered that the mounting state of the armrest bracket joined to the seat back frame and the armrest held by the armrest bracket is also affected.

The present embodiment has been made in view of the above-described circumstances, and an object thereof is to suppress the disengagement of the armrest when a predetermined load is input to the seat back frame.

[ Means of solving the problems ]

In order to solve the above problems, the vehicle seat according to the solution 1 is constituted by including a seat back, which is used as a backrest, and

An armrest rotatably provided on the seat back between a position along the seat back and a state of being extended forward,

The vehicle seat is characterized in that the armrest has an armrest frame as a skeleton,

The seat back has a seat back frame as a skeleton, and an armrest bracket joined to the seat back frame for holding the armrest frame,

The armrest frame is rotatably mounted on the armrest bracket via a rotation shaft,

The armrest bracket includes:

a rotating shaft hole for allowing the rotating shaft to be inserted;

a limiting part for limiting the rotation range of the armrest frame, and

A deformation part arranged between the rotation shaft hole and the joint part of the limiting part and the armrest bracket relative to the seat back frame,

The deformation portion deforms so as to follow the armrest when the armrest moves under a predetermined load applied to the seatback frame.

The means for solving 2 is the seat for a vehicle according to the means for solving 1, characterized in that,

The armrest bracket further includes first reinforcing portions provided on one side and the other side, respectively, with the deformation portion interposed therebetween to reinforce the armrest bracket.

The means for solving 3 is the seat for a vehicle according to the means for solving 2, characterized in that,

The first reinforcement portion is a flange formed along an edge portion of the armrest bracket.

The means for solving 4 is the seat for a vehicle according to the means for solving 2, characterized in that,

The armrest bracket further includes a second reinforcing portion provided at a position opposite to the deformation portion to reinforce the armrest bracket.

The means for solving 5 is the seat for a vehicle according to the means for solving 4, characterized in that,

The deformation portion and the second reinforcement portion are disposed adjacent to each other in the vertical direction.

The means for solving 6 is the seat for a vehicle according to the means for solving 4, characterized in that,

The deformation part is provided with an upper deformation part arranged at the upper part of the handrail bracket and a lower deformation part arranged at the lower part of the handrail bracket,

The upper deformed portion and the lower deformed portion are arranged on the same straight line.

The means for solving 7 is the vehicle seat according to the means for solving 6, characterized in that,

The second reinforcing portion is provided between the upper side deformation portion and the lower side deformation portion.

The means for solving 8 is the seat for a vehicle according to any one of the means for solving 1 to 7, characterized in that,

The armrest bracket has a first bracket holding one end portion of the armrest frame in the width direction and a second bracket holding the other end portion of the armrest frame in the width direction,

The deformation portion provided in the first bracket and the deformation portion provided in the second bracket are disposed at different positions in the seat front-rear direction.

[ Effect of solving means ]

According to the solution 1, when the armrest moves under a predetermined load applied to the seat back frame, the deformed portion of the armrest bracket deforms so as to follow the armrest, and the release of the armrest from the armrest bracket can be suppressed.

According to the solution 2, the position of the arm rest bracket where the deformation portion is provided is easily deformed, and the arm rest is easily prevented from being detached from the arm rest bracket.

According to the solution 3, the rigidity of the armrest bracket can be improved by a relatively simple structure.

According to the solving means 4, the position of the handrail bracket where the deformation portion is provided is more easily deformed, so that the detachment of the handrail from the handrail bracket is more easily suppressed.

According to the solving means 5, the deformed portion and the second reinforcing portion are arranged up and down, and the position of the handrail bracket where the deformed portion is provided is more likely to be deformed. Further, it is easy to tune (tune) the deformation of the armrest bracket in the up-down direction.

According to the solving means 6, the upper deformation portion and the lower deformation portion are arranged on the same straight line, and therefore the armrest bracket is easily deformed around the portion where the upper deformation portion and the lower deformation portion are arranged.

According to the solving means 7, the upper side deformation portion, the second reinforcement portion and the lower side deformation portion are arranged up and down, and the upper portion and the lower portion of the armrest bracket are more likely to be deformed. Moreover, the deformation of the armrest bracket is easily tuned in the up-down direction.

According to the solving means 8, since the amounts of deformation in the first bracket and the second bracket can be adjusted to be different, it is easy to tune the amount of movement when the armrest moves by applying a predetermined load to the seat back frame in the width direction.

[ Content of embodiments related to vehicle seats ]

In fig. 48 and 49, reference numeral 3001 denotes a vehicle seat on which a person sits. The vehicle seat 3001 is provided on a floor of a vehicle body in a passenger car. However, the present invention is not limited to this, and may be used as a seat in another automobile such as a bus or a truck, or may be used as a seat in a vehicle other than an automobile such as a train, a ship, or an airplane.

The vehicle seat 3001 is a tandem seat, and is provided further rearward than the driver's seat in the present embodiment. And is arranged in a left-right arrangement with a seat of a single seat, not shown. That is, when the vehicle seat 3001 is provided in a vehicle, seats of a single seat, not shown, are arranged adjacently to form a three-seat. However, the vehicle seat 3001 is not limited thereto, and may be a three-seat bench seat.

The vehicle seat 3001 according to the present embodiment is provided to a vehicle body in a state where a space having a certain size is formed in the rear side. The rear space of the vehicle seat 3001 is set as, for example, a space formed between the vehicle seat and a rear seat or a trunk.

The vehicle seat 3001 includes a seat cushion 3002 for supporting the buttocks and thighs of a person, a seat back 3003 serving as a backrest, a lower end portion of which is supported by the seat cushion 3002, two head rests 3004 provided on the seat back 3003 for supporting the head of the person, and armrests 3005 provided on the seat back 3003 for supporting the arms of the person when the vehicle seat is deployed forward.

The armrest 3005 is used as a backrest of a seat positioned in the middle when the vehicle seat 3001 of the present embodiment of the double seat and the vehicle seat of the single seat are arranged in a left-right arrangement to form a three-seat.

The vehicle seat 3001 includes a seat frame that forms a skeleton of the vehicle seat 3001, a cushion pad provided on the seat frame, and a skin that covers the cushion pad and the seat frame.

The seat frame includes a cushion frame that becomes a skeleton of the seat cushion 3002, a seat back frame 3006 that becomes a skeleton of the seat back 3003, a headrest frame and a headrest column that become a skeleton of the headrest 3004, and an armrest frame 3007 that becomes a skeleton of the armrest 3005.

A recess 3003a for storing the armrest 3005 is formed in the seat back 3003 at a position where the armrest 3005 is provided.

The recess 3003a is formed by providing a cushion pad avoiding the position of the armrest 3005 in the seatback frame 3006. In other words, when the cushion pad is provided on the seat back frame 3006, the cushion pad is provided so as to avoid the position where the armrest 3005 is provided, and the portion where the cushion pad is not provided is provided as the recess 3003a in which the armrest 3005 is stored.

As shown in fig. 48 and 49, the armrest 3005 is rotatably provided on the seatback 3003 between a position along the seatback 3003 and a position in which the armrest is extended forward.

That is, the armrest 3005 is disposed along the seatback 3003, and thus is used as a backrest together with the seatback 3003, and is used as an armrest by being deployed forward. Therefore, the armrest frame 3007 is provided with a cushion pad so as to cover the armrest frame 3007, and is covered with a skin thereon. Thus, the armrest 3005 functions as a cushion material both when used as a backrest and when used as an armrest.

As shown in fig. 50 to 52, the seat back frame 3006, which is a framework of the seat back 3003, includes a substantially コ -shaped main frame including left and right back side frames 3006a and an upper frame 3006b, a bottom frame 3006c provided between lower end portions of the main frame, a center frame 3006d provided between the upper frame 3006b and the bottom frame 3006c, and a plurality of pressure receiving members 3006e provided between the left and right back side frames 3006a and the center frame 3006 d.

The center frame 3006d is disposed slightly to the left of the longitudinal centers of the upper frame 3006b and the bottom frame 3006 c.

As shown in fig. 50 to 52, the armrest frame 3007, which is a framework of the armrest 3005, includes left and right side frames 3007a, a substantially コ -shaped upper frame 3007b, and a plurality of pressure receiving members 3007c provided between the left and right frames in the upper frame 3007 b.

The armrest frame 3007 is held by a plurality of armrest brackets 3010 and 3020 joined to the seat back frame 3006.

To describe in more detail, the plurality of armrest brackets includes a first bracket 3010 positioned on the left side to hold the left end of the armrest frame 3007 and a second bracket 3020 positioned on the right side to hold the right end of the armrest frame 3007. That is, the armrest frame 3007 is held by a pair of right and left armrest brackets 3010 and 3020.

Also, the first bracket 3010 is joined to the right side surface in the lower end portion of the back side frame 3006a located on the left side by welding or the like, and the second bracket 3020 is joined to the left side surface in the lower end portion of the center frame 3006d by welding or the like.

The armrest frame 3007 is rotatably attached to the left and right armrest brackets 3010 and 3020 via a rotation shaft 3030 and a stopper member 3031.

The rotation shaft 3030 and the stopper member 3031 are both cylindrical bars, and are provided so as to be bridged between the left and right arm rest brackets 3010 and 3020.

The rotation shaft 3030 and the stopper member 3031 are disposed parallel to each other, and both longitudinal ends are connected to each other by the connecting portion 3032. Thereby, the stopper member 3031 moves in conjunction with the rotation shaft 3030, and moves in an arc shape with the rotation of the rotation shaft 3030.

First, the first bracket 3010 is formed by machining a metal plate, and protrudes forward of the seat from the lower end of the left back frame 3006 a.

A rotation shaft hole 3011 through which a left end portion of the rotation shaft 3030 is inserted is formed at a front end portion in the protruding direction, and an arc-shaped restricting hole 3012 through which the stopper member 3031 is inserted is formed adjacent to the rotation shaft hole 3011.

The limiting hole 3012 is formed in a substantially C-shape from above to below the rotation shaft hole 3011. When the stopper member 3031 hits against the upper end edge of the limiting hole 3012, the armrest 3005 is unfolded forward, and when the stopper member 3031 hits against the lower end edge of the limiting hole 3012, the armrest 3005 is stored in the recess 3003a.

In the present embodiment, the stopper member 3031 is inserted into the limiting hole 3012, and the stopper member 3031 is abutted against the upper and lower end edges of the limiting hole 3012 to limit the rotation range of the armrest frame 3007, but the present invention is not limited thereto, and the rotation range of the armrest frame 3007 may be limited by other structures. For example, the rotation range of the armrest frame 3007 may be limited by an upper protrusion and a lower protrusion protruding from the right side surface of the first bracket 3010 contacting the end of the armrest frame 3007.

The first bracket 3010 is provided with a first reinforcement portion 3013 between the upper edge portion and the lower edge portion via the front edge portion.

The first reinforcement portion 3013 of the present embodiment is configured as a flange. That is, the upper edge, the front edge, and the lower edge of the first bracket 3010 are bent to form a flange 3013, and the flange 3013 functions as a reinforcement portion that increases the rigidity of the first bracket 3010.

The first reinforcement portion 3013 of the present embodiment is formed as a flange, but the present invention is not limited thereto, and a rib, a stiffener, or the like may be provided to reinforce the first bracket 3010.

The flange 3013 is not formed at the rear end edge of the first bracket 3010, but a second reinforcement portion 3014 that bulges the rear end of the first bracket 3010 to the left is formed on the rear end side of the first bracket 3010. Since the second reinforcement portion 3014 bulges leftward, the right side surface is recessed. That is, the second reinforcement portion 3014 has irregularities formed on the rear end portion side of the first bracket 3010, and the rigidity of the first bracket 3010 is improved by the irregularities.

The second reinforcement portion 3014 also functions as a joining surface to the back side frame 3006a, and the portion that contacts the back side frame 3006a is joined by welding or the like.

In addition, together with the second reinforcement 3014, the first reinforcement 3013 is also joined to the back side frame 3006a by welding or the like. That is, the portions of the flange of the first reinforcement portion 3013 located on the rear end sides of the upper end edge portion and the lower end edge portion of the first bracket 3010 are formed in an arc shape along the outer peripheral surface of the back side frame 3006a, and contact the outer peripheral surface of the back side frame 3006a. Therefore, the portion of the back side frame 3006a that contacts the outer peripheral surface is joined by welding or the like.

In addition, a chisel 3014a for attaching a cushion pad or a skin is formed in a central portion of the first bracket 3010 where the second reinforcement 3014 is formed.

The first bracket 3010 is formed with deformation portions 3015 and 3016, and the deformation portions 3015 and 3016 deform so as to follow the movement of the armrest 3005 when a predetermined load is applied to the seat back frame 3006. The deformation portions 3015 and 3016 of the present embodiment are disposed between the rotation shaft hole 3011 and the restriction hole 3012 in the first bracket 3010 and the joint portion of the first bracket 3010 to the back side frame 3006 a.

The predetermined load is a load received from the rear space side of the vehicle seat 3001, and is a load generated when, for example, luggage or the like located in the rear space collides with the seat back 3003 of the vehicle seat 3001 at the time of a front collision of the vehicle.

The deformation portion of the present embodiment includes an upper deformation portion 3015 provided at an upper portion of the first bracket 3010, and a lower deformation portion 3016 provided at a lower portion of the first bracket 3010.

The upper deformation portion 3015 is a notch portion formed by cutting the upper edge portion of the first bracket 3010, and is formed by cutting the upper edge portion of the first bracket 3010 in a substantially U-shape downward.

The upper deformed portion 3015 breaks the flange 3013, which is the first reinforcement portion 3013 formed at the upper edge of the first bracket 3010, back and forth. In other words, the first reinforcement portion 3013 is provided on the front side and the rear side with the upper deformation portion 3015 interposed therebetween.

The upper deformed portion 3015 is in a state of facing the second reinforcing portion 3014. In other words, the second reinforcement portion 3014 is disposed at the distal end of the upper deformation portion 3015 in the extension direction. That is, the second reinforcement portion 3014 is provided adjacently below the upper deformation portion 3015.

The lower deformation portion 3016 is a notch portion formed by cutting the lower edge portion of the first bracket 3010, and is formed by cutting the lower edge portion of the first bracket 3010 in a substantially U-shape upward.

The lower deformation portion 3016 breaks the flange 3013, which is the first reinforcement portion 3013 formed at the lower edge of the first bracket 3010, back and forth. In other words, the first reinforcement portion 3013 is provided on the front side and the rear side with the lower deformation portion 3016 interposed therebetween.

The lower deformed portion 3016 is in a state of facing the second reinforcing portion 3014. In other words, the second reinforcement portion 3014 is disposed at the front end of the lower deformation portion 3016 in the extension direction. That is, the second reinforcement portion 3014 is provided adjacently above the lower deformation portion 3016.

In short, the second reinforcement portion 3014 is provided between the upper deformation portion 3015 and the lower deformation portion 3016.

The upper deformation portion 3015 and the lower deformation portion 3016 are arranged in the same line. The straight line here means an imaginary straight line extending substantially parallel to the back side frame 3006 a. That is, the arrangement direction of the upper deformation portion 3015 and the lower deformation portion 3016 is substantially parallel to the longitudinal direction of the back frame 3006 a.

In other words, the interval from the position of the back side frame 3006a (the joint portion of the first bracket 3010 with respect to the seatback frame 3006) up to the upper side deformation 3015 is substantially equal to the interval from the position of the back side frame 3006a up to the lower side deformation 3016.

Next, the second bracket 3020 will be described. However, the second bracket 3020 has a similar structure to the first bracket 3010, and thus common elements are omitted or briefly described.

The second bracket 3020 is formed by machining a metal plate, and protrudes from the lower end of the center frame 3006d toward the front of the seat.

A rotation shaft hole 3021 through which a right end portion of the rotation shaft 3030 is inserted is formed at a front end portion in the protruding direction, and an arc-shaped restricting hole 3022 through which the stopper member 3031 is inserted is formed adjacent to the rotation shaft hole 3021. When the stopper member 3031 hits against the upper end edge of the restriction hole 3022, the armrest 3005 is unfolded forward, and when the stopper member 3031 hits against the lower end edge of the restriction hole 3022, the armrest 3005 is stored in the recess 3003a.

The second bracket 3020 is provided with a first reinforcing portion 3023 between the upper end edge portion and the lower end edge portion via the front end edge portion. The first reinforcing portion 3023 of the present embodiment is provided as a flange.

The flange 3023 is not formed at the rear end edge of the second bracket 3020, but a second reinforcing portion 3024 that bulges the rear end of the second bracket 3020 to the right is formed at the rear end side of the second bracket 3020. Since the second reinforcement portion 3024 bulges to the right, the left side surface side is recessed, and the rigidity of the second bracket 3020 is improved by the concave-convex structure.

The second reinforcement portion 3024 also functions as a joining surface to the back side frame 3006a, and the portion that contacts the center frame 3006d is joined by welding or the like.

In addition, together with the second reinforcement portion 3024, the first reinforcement portion 3023 is also joined to the back side frame 3006a by welding or the like. That is, the portions of the flange of the first reinforcement portion 3023 on the rear end sides of the upper end edge portion and the lower end edge portion of the second bracket 3020 are formed in an arc shape along the outer peripheral surface of the center frame 3006d and contact the outer peripheral surface of the center frame 3006 d. Therefore, the portion of the center frame 3006d that contacts the outer peripheral surface is joined by welding or the like.

The second bracket 3020 is provided with deformation portions 3025 and 3026, and the deformation portions 3025 and 3026 are deformed so as to follow the armrest 3005 when the armrest 3005 moves under a predetermined load applied to the seatback frame 3006. The deformation portions 3025 and 3026 of the present embodiment are disposed between the rotation shaft hole 3021 and the restricting hole 3022 in the second bracket 3020 and the joint portion of the second bracket 3020 with respect to the center frame 3006 d.

The deformation portion of the present embodiment includes an upper deformation portion 3025 provided at an upper portion of the second bracket 3020 and a lower deformation portion 3026 provided at a lower portion of the second bracket 3020.

The upper deformation portion 3025 is a notch formed by cutting the upper edge portion of the second bracket 3020 into a substantially U shape, and cuts the flange 3023, which is the first reinforcement portion 3023 formed on the upper edge portion of the second bracket 3020, back and forth. In other words, the first reinforcement portion 3023 is provided on the front side and the rear side with the upper deformation portion 3025 interposed therebetween.

The upper deformed portion 3025 faces the second reinforcing portion 3024, and the second reinforcing portion 3024 is provided adjacently below the upper deformed portion 3025.

The lower deformation portion 3026 is a notch formed by cutting the lower end edge portion of the second bracket 3020 into a substantially U shape, and cuts the flange 3023, which is the first reinforcement portion 3023 formed at the lower end edge portion of the second bracket 3020, back and forth. In other words, the first reinforcement portion 3023 is provided on the front side and the rear side with the lower deformation portion 3026 interposed therebetween.

The lower deformation portion 3026 faces the second reinforcement portion 3024, and the second reinforcement portion 3024 is provided adjacently above the lower deformation portion 3026.

In short, the second reinforcement portion 3024 is provided between the upper side deformation portion 3025 and the lower side deformation portion 3026.

The upper deformation portion 3025 and the lower deformation portion 3026 are arranged on the same line. The straight line here means an imaginary straight line extending substantially parallel to the center frame 3006 d. That is, the arrangement direction of the upper deformation portion 3025 and the lower deformation portion 3026 is substantially parallel to the longitudinal direction of the center frame 3006 d.

In other words, the interval from the position of the center frame 3006d (the joint portion of the second bracket 3020 with respect to the seatback frame 3006) up to the upper side deformation portion 3025 is substantially equal to the interval from the position of the center frame 3006d up to the lower side deformation portion 3026.

In the vehicle seat 3001 configured as described above, as shown in fig. 52, the upper deformation portion 3015 and the lower deformation portion 3016 provided in the first bracket 3010 and the upper deformation portion 3025 and the lower deformation portion 3026 provided in the second bracket 3020 are disposed at different positions in the seat front-rear direction. That is, the upper deformation portion 3015 and the lower deformation portion 3016 provided in the first bracket 3010 are located further forward than the upper deformation portion 3025 and the lower deformation portion 3026 provided in the second bracket 3020.

In other words, regarding the positions of the upper and lower deformation portions 3015 and 3016 with respect to the seatback frame 3006 (the back frame 3006 a) and the positions of the upper and lower deformation portions 3025 and 3026 with respect to the seatback frame 3006 (the center frame 3006 d), the upper and lower deformation portions 3015 and 3016 are located on the front side. To describe in more detail, when the virtual straight line connecting the upper deformation portion 3015 and the lower deformation portion 3016 in the first bracket 3010 is a first straight line, and the virtual straight line connecting the upper deformation portion 3025 and the lower deformation portion 3026 in the second bracket 3020 is a second straight line, in the present embodiment, the positions of the first straight line and the second straight line with respect to the seatback frame 3006 are different in the seat front-rear direction.

When a predetermined load is input and deformation occurs in the first bracket 3010 and the second bracket 3020, the deformation occurs starting from the deformation portions 3015, 3016, 3025, 3026. Further, the first bracket 3010 and the second bracket 3020 are joined to the seat back frame 3006 by welding or the like, and therefore the bottom end portion side is less likely to deform. Therefore, when the first bracket 3010 and the second bracket 3020 are deformed, the position located forward of the deformed portions 3015, 3016, 3025, 3026 moves relative to the position located rearward of the deformed portions 3015, 3016, 3025, 3026.

When the first bracket 3010 and the second bracket 3020 are deformed in this manner, the upper deformation portion 3015 and the lower deformation portion 3016 provided in the first bracket 3010 are positioned further forward than the upper deformation portion 3025 and the lower deformation portion 3026 provided in the second bracket 3020, and therefore the deformation amount of the first bracket 3010 is smaller than the deformation amount of the second bracket 3020, and the deformation amount of the second bracket 3020 is larger than the deformation amount of the first bracket 3010. That is, it is possible to grasp in advance how the left and right arm rest brackets 3010, 3020 will deform, and therefore it is possible to plan in advance the amount of movement of the arm rest 3005 that moves when a predetermined load is applied to the seat back frame 3006. Therefore, the amount of movement in the case where the armrest 3005 is moved can be tuned in advance, and a certain degree of control can be performed.

The movement amount when the armrest 3005 is moved can be tuned in advance by changing the gap length or shape of each of the deformation portions 3015, 3016, 3025, 3026, as well as the positions of the deformation portions 3015, 3016, 3025, 3026 in the first bracket 3010 and the second bracket 3020. Further, in the present embodiment, the deformation portions 3015, 3016, 3025, 3026 are formed in the upper and lower sides of the first bracket 3010 and the second bracket 3020, but the deformation portions 3015 (3016), 3025 (3026) may be formed in either the upper and lower sides.

In the present embodiment, the armrest frame 3007 is held by the left and right armrest brackets 3010 and 3020, but the number of armrest brackets may be one. The armrest 3005 shown in fig. 48 and 49 is also used as a backrest, and therefore the dimension in the lateral direction is set long, but may be shorter (thinner) when used only for supporting the arm of a person. In the case of employing such a thin armrest in a vehicle seat, the number of armrest brackets may be one. In this case, the armrest frame serving as the skeleton of the armrest is, of course, also configured to correspond to one armrest bracket.

When a predetermined load is input to the seatback frame 3006 from the rear space, the vehicle seat 3001 configured as described above moves along with the deformation of the seatback frame 3006, so that the armrest 3005 held by the armrest brackets 3010 and 3020 moves.

In this case, the armrest brackets 3010, 3020 are deformed from the deformed portions 3015, 3016, 3025, 3026 that are deformed so as to follow the movement of the armrest 3005. That is, the deformed portions 3015, 3016, 3025, 3026 are the weakest points (weakened portions) of the armrest brackets 3010, 3020, and serve as starting points when the armrest brackets 3010, 3020 are deformed.

Further, by deforming the armrest brackets 3010 and 3020 in this manner, it is difficult for a strong force accompanying deformation of the seatback frame 3006 to be applied to the peripheral edge portions of the rotation shaft holes 3011 and 3021 through which the rotation shaft 3030 is inserted or the peripheral edge portions of the restriction holes 3012 and 3022 through which the stopper member 3031 is inserted. Therefore, the armrest frame 3007, which serves as a skeleton of the armrest 3005, is less likely to be detached from the armrest brackets 3010 and 3020.

According to the present embodiment, the following excellent effects are obtained.

That is, the armrest brackets 3010 and 3020, which are joined to the seatback frame 3006 to hold the armrest frame 3007, include the rotation shaft holes 3011 and 3021 through which the rotation shaft 3030 is inserted, the restricting portions 3012 and 3022 that restrict the rotation range of the armrest frame 3007, and the deforming portions 3015, 3016, 3025 and 3026 that are provided between the rotation shaft holes 3011 and the joining portions of the restricting portions 3012 and 3022 and the armrest brackets 3010 and 3020 with respect to the seatback frame 3006, and that deform the deforming portions 3015, 3016, 3025 and 3026 so as to follow the movement of the armrest 3005 when a predetermined load is applied to the seatback frame 3006, so that the deforming portions 3015, 3016, 3025 and 3026 deform so as to follow the movement of the armrest 3005 when a predetermined load is applied to the seatback frame 3006, and that the armrest 3005 can be prevented from being detached from the brackets 3010 and 3020.

The armrest brackets 3010 and 3020 further include first reinforcing portions 3013 and 3023, and the first reinforcing portions 3013 and 3023 are provided on one side and the other side of the first reinforcing portions 3013 and 3023, respectively, with the deformation portions 3015, 3016, 3025 and 3026 interposed therebetween, to reinforce the armrest brackets 3010 and 3020, so that the positions of the armrest brackets 3010 and 3020 where the deformation portions 3015, 3016, 3025 and 3026 are provided are easily deformed, and detachment of the armrest 3005 from the armrest brackets 3010 and 3020 is easily suppressed.

Further, the first reinforcement portions 3013 and 3023 are flanges formed along the edge portions of the armrest brackets 3010 and 3020, and therefore the rigidity of the armrest brackets 3010 and 3020 can be improved by a relatively simple structure.

The armrest brackets 3010 and 3020 further include second reinforcing portions 3014 and 3024, and the second reinforcing portions 3014 and 3024 are provided at positions facing the deformation portions 3015, 3016, 3025 and 3026 to reinforce the armrest brackets 3010 and 3020, so that the positions of the armrest brackets 3010 and 3020 where the deformation portions 3015, 3016, 3025 and 3026 are provided are more likely to be deformed, and the release of the armrest 3005 from the armrest brackets 3010 and 3020 is more likely to be suppressed.

Further, since the deformation portions 3015, 3016, 3025, 3026 are arranged adjacent to the second reinforcement portions 3014, 3024 in the vertical direction, the deformation portions 3015, 3016, 3025, 3026 are arranged vertically to the second reinforcement portions 3014, 3024, and the deformation portions 3015, 3016, 3025, 3026 are more likely to be deformed in the armrest brackets 3010, 3020. Further, the deformation of the armrest brackets 3010, 3020 is easily tuned in the up-down direction.

Further, the deformation portions 3015, 3016, 3025, 3026 have upper deformation portions 3015, 3025 provided at the upper portions of the armrest brackets 3010, 3020 and lower deformation portions 3016, 3026 provided at the lower portions of the armrest brackets 3010, 3020, and the upper deformation portions 3015, 3025 and the lower deformation portions 3016, 3026 are arranged on the same line, so that the armrest brackets 3010, 3020 are likely to deform around the portions where the upper deformation portions 3015, 3025 and the lower deformation portions 3016, 3026 are arranged.

Further, since the second reinforcement portions 3014 and 3024 are provided between the upper deformation portions 3015 and 3025 and the lower deformation portions 3016 and 3026, the upper deformation portions 3015 and 3025, the second reinforcement portions 3014 and 3024, and the lower deformation portions 3016 and 3026 are arranged vertically, and the upper and lower portions of the armrest brackets 3010 and 3020 are more likely to be deformed. Further, the deformation of the armrest brackets 3010, 3020 is easily tuned in the up-down direction.

Further, since the armrest brackets 3010 and 3020 include the first bracket 3010 for holding one end portion of the armrest frame 3007 in the width direction and the second bracket 3020 for holding the other end portion of the armrest frame 3007 in the width direction, and the deformation portions 3015 and 3016 provided in the first bracket 3010 and the deformation portions 3025 and 3026 provided in the second bracket 3020 are arranged at different positions in the seat front-rear direction, the amounts of deformation in the first bracket 3010 and the second bracket 3020 can be adjusted so as to be different, and the amount of movement in the case where a predetermined load is applied to the seat back frame 3006 and the armrest 3005 is moved can be easily adjusted in the width direction.

Industrial applicability

The present invention has industrial applicability with respect to seat back frames.

Description of the reference numerals

11. 12 Headrest frame

13. 14 Handrail bracket

15. 15B first belt guide

151 Arm portion

152. 152D plug-in portion

16 Second belt guide

161 Arm portion

162. 162E plug-in portion

17 Latch member

18, Setting bracket

20. 20A, 20C tube frame

21-24 First-fourth pipe members

211 Left frame part

212 Right frame portion

213 Upper frame part

221 Flat portion

231A, 231C, 232A, 232C bending portion

30 Panel frame

32 Opening portion

33 Undulating connection

34 Gap

35 Gap

40. 40G supporting bracket

41 Supporting part

42 Connecting portion

421 Reinforcing part

43 Bolt

50 Mounting bracket

51 Mounting surface

52 Gap

100. 100A, 100C-100G seat back frame

301 Flange portion

311 First reinforcing part

311A through hole

312 First joint reinforcing part

313 Peripheral reinforcement

314 Second joint reinforcing part

315 Step reinforcement

316 Third joint reinforcing part

317 Fourth joint reinforcing part

318 Fifth joint reinforcing part

319 Second reinforcing portion

421 Reinforcing part

B safety belt winding device

B1 safety belt

B2:

B3 center

P1 to P4, first to fourth portions

Claims

1. A seat back frame, comprising:

a first belt guide for passing the seat belt unwound from the seat belt reel; and

A second belt guide different from the first belt guide passes the seatbelt unwound from the seatbelt retractor.

2. The seat back frame according to claim 1, characterized in that it includes a tube frame,

The first belt guide and the second belt guide are installed along the pipe circumferential surface of the pipe frame.

3. The seat back frame according to claim 2, wherein the first belt guide and the second belt guide both comprise U-shaped steel wires.

The first belt guide and the second belt guide are both installed with one end and the other end of the steel wire along the circumferential surface of the tube frame.

When the seat back frame is sandwiched with one side being the front and the other side being the rear, the seat belt insertion portion of the first belt guide extends forward of the center of the seat belt take-up device, and the seat belt insertion portion of the second belt guide does not extend forward of the center of the seat belt take-up device.

4. The seat back frame according to claim 2 or 3, wherein the first belt guide and the second belt guide both comprise U-shaped steel wires.

In a case where the seat back frame is sandwiched with one side being the front and the other side being the rear, the first belt guide and the second belt guide are both mounted with one end and the other end of the steel wire along the pipe circumference of the pipe frame.

The end of the first belt guide on the belt insertion side extends forward from the upper portion of the tube circumference of the tube frame, and the end of the second belt guide on the belt insertion side extends forward from the lower portion of the tube circumference of the tube frame.

5 . The seat back frame according to claim 4 , wherein the first belt guide and the second belt guide include members of the same shape.

6. The seat back frame according to claim 2, wherein the pipe frame is provided along the outer edge of the seat back frame.

A connecting member is provided inside the pipe frame and arranged along the up-down direction.

The connecting member is bent so as to bypass the first belt guide or the second belt guide, and an upper end portion is connected to the pipe frame.

7. The seat back frame of claim 2, wherein the first belt guide and the second belt guide comprise an integrated single component.

8. The seat back frame according to claim 2, characterized by comprising: a panel frame coupled to the tube frame,

The panel frame has an escape portion that escapes the first belt guide and the second belt guide with respect to the mounting portion of the first belt guide and the second belt guide in the pipe frame.