KR101611756B1 - Dive seat for vehicle - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle dive seat, in which a front lower portion of a cushion frame is rotatably connected to a mounting bracket fixed to a floor via a dive link, and a rear end of a side member of the cushion frame is integrally rotated with a back bracket The cushion frame is connected to the pivotal bracket so that the side member is pulled backward when folding back the seat back so that the cushion frame can be dived backward and downward. Accordingly, there is provided a dive sheet having a reduced number of parts, a simple structure, and improved rigidity.

Description

[0001] DIVE SEAT FOR VEHICLE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle dive seat, and more particularly, to a vehicle dive seat in which a seat cushion is moved backward and downward when folding back a seat back.

As the tendency to enjoy leisure activities as outdoor activities such as camping is increasing, the use of SUV (Sports Utility Vehicle) vehicles is increasing.

The three row seat of the SUV vehicle not only folds the seatback forward, but also dives the seat cushion to lower the seat height, thereby further securing the trunk space.

In the conventional dive sheet, when the seat back is folded, the seat cushion is danced downward. In this case, the distance between the seat back and the two-row seat is reduced so that the headrest is interfered with the two- There was a restriction on the positional control of the front and rear.

Therefore, a dive sheet in which the seat cushion is moved downward in the backward direction when the seat back is folded is developed, as disclosed in Korean Patent Registration No. 10-1425353 (hereinafter referred to as "prior art").

However, the dive sheet disclosed in the prior art document has a complicated structure and operation due to a large number of links and hinges involved in the dive operation, has a high possibility of generating noise, and has a structure in which the third link 130, And there is a problem that the fixed strength is weak in the use state (the occupant is seated).

Accordingly, it is an object of the present invention to provide a vehicle dive seat having a simpler and more robust structure while implementing a downward-facing downward dive operation.

In order to achieve the above object, according to the present invention, there is provided a cushion frame comprising: a mounting bracket fixed to a floor; a dive unit rotatably connected at both ends of the mounting bracket to a lower portion of the cushion frame, A cushion bracket fixed to the rear end of the mounting bracket so as not to be rotatable via a plurality of bolts, a back bracket fixed to a side surface of the back frame and rotatably connected to the cushion bracket, And a rear end of the cushion frame is rotatably connected to one side of the cushion frame so as to pull the cushion frame backward when the back frame is folded.

A back bracket is disposed inside the cushion bracket, a pivot bracket is disposed outside the cushion bracket, a hinge pin is provided through the pivot bracket, the cushion bracket, and the back bracket so as to be spaced apart from the hinge pin by a predetermined distance And the rear end of the side member of the cushion frame is rotatably mounted to the connection hole formed in the lower front of the hinge pin in the pivot bracket .

The cam hinge pin is disposed on the upper rear side with respect to the hinge pin, a cam is rotatably installed on the cam hinge pin, and an arc-shaped engaging surface is formed on the upper rear end of the cushion bracket to catch the cam in the seat back folding direction.

The lower fixing pin is disposed at the lower rear side with respect to the hinge pin, and a latching jaw is formed at the rear side of the cushion bracket to catch the lower fixing pin when the seat back is raised, restricting the backward rotation of the seatback.

The cam has a guide pin. One end of the guide pin is inserted into a guide hole formed in the back bracket. The other end is protruded to the outside of the rotation bracket through a guide hole formed in the rotation bracket. A coil spring for pulling down the guide pin is provided between the spring fixing portions formed at the lower portion of the bracket. The other end of the guide pin is connected to the seat back folding lever installed on the rear side of the seat back via the wire to pull the guide pin upward have.

The cushion frame includes a front member, a rear member, and a pair of side members that connect both ends of the front member and the rear member. The dive link base bracket having both ends bent downward is mounted on the lower surface of the front member. And an upper end and a lower end of the dive link are rotatably connected between the end portion and the dive link mounting portion formed on the mounting bracket.

According to the present invention as described above, a dive sheet is provided which realizes the backward dive operation of the cushion and has fewer parts and fewer hinge connection parts.

Thus, the seat fold-and-dive operation is simplified, no noise is generated during operation, and the durability can be maintained when the occupant is seated while in operation or unfolded. Furthermore, since the cushion bracket is fixed in a non-rotatable state by a plurality of bolts, the robustness and noise reduction performance are doubled.

Further, since the cushion is dribbled backward, it is possible to secure a sufficient distance from the heat-transfer sheet, and interference between the dive sheet and the heat-transfer sheet is prevented. Therefore, the allowable height of the headrest is increased, and the degree of freedom in adjusting the longitudinal position of the heat transfer sheet is improved.

Further, at the completion of the backward dive of the seat, the height of the seatback top becomes equal to the height of the trunk floor, and there is no gap between the seatback and the trunk floor, thereby improving trunk space utilization.

1 is a perspective view of a dive sheet according to the present invention;
Fig. 2 is a perspective view of the front cross member disassembled in Fig. 1; Fig.
Fig. 3 is a perspective view of the pivot bracket and the cushion side member disassembled in Fig. 1; Fig.
4 is an enlarged view of the seat back folding portion of Fig.
Fig. 5 is a perspective view of a state in which a rotation bracket is mounted on Fig. 4; Fig.
6 is a side view of the dive sheet before folding back the seat back.
7 is a side view of the dive sheet during seat back folding;
8 is a side view of a dive seat in which seat back folding is completed;

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The thicknesses of the lines and the sizes of the components shown in the accompanying drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, and these may vary depending on the intention of the user, the operator, or the precedent. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, a vehicle dive seat according to the present invention includes a mounting bracket 100 fixed to a floor, a cushion frame 200 installed to the mounting bracket 100 so as to be capable of rearward diving, And a back frame 300 which is rotatably installed at the rear end of the cushion frame 200 and can be folded over the cushion frame 200.

The mounting bracket 100 supports the entire seat, and is a pair of brackets arranged in the longitudinal direction of the vehicle, and is fixed to the floor with bolts.

The cushion frame 200 is formed by welding a front member 210, a rear member 220, and a pair of side members 230 connecting the front member 210 and the rear member 220 such that the front member 210 and the rear member 220 are substantially rectangular. The side members 230 on the right and left sides are bent in an L-shape and extend upwardly, as indicated by an L-bracket, at the rear end of the coupling part with the rear member 220. [

Between the front member 210 and the rear member 220, a plurality of support springs 240 having an S-shape repeatedly formed so as to elastically support the body weight of the occupant are connected.

A dive link base bracket 250, whose both ends are bent downward, is fixed to the lower surface of the front member 210 with bolts.

The upper ends of the pair of dive links 260 are rotatably connected to both ends of the dive link base bracket 250 via bolts so that the cushion dive operation can be performed.

The lower ends of the pair of dive links 260 are rotatably connected to the dive link mounting portions 110 protruding from one side of the mounting bracket 100 at corresponding positions via bolts.

That is, the upper and lower ends of the dive link 260 are rotatably connected to the cushion frame 200 and the floor mounting bracket 100, respectively.

The lower end of the cushion bracket 270 is firmly fixed to the rear end of the mounting bracket 100 via a plurality of bolts B1 and B2.

A back bracket 310 is bolted to both sides of the back frame 300.

The back bracket 310 is rotatably connected to the inner side of the cushion bracket 270 by a hinge pin P1.

4, an upper fixing pin P2, a lower fixing pin P3, and a cam hinge pin P4 are mounted on the back bracket 310 at a predetermined distance from the hinge pin P1.

A pivot bracket 320 is mounted on the outer side of the cushion bracket 270. The rotation bracket 320 is provided with a hinge pin hole 321 corresponding to the hinge pin P1, an upper fixing pin P2, a lower fixing pin P3 and a cam hinge pin P4, an upper fixing pin hole 322, A fixed pinhole 323 and a cam hinge pinhole 324 are formed. The pivot bracket 320 is mounted on the outer side of the back bracket 310 with the cushion bracket 270 therebetween in a state where the pins P1, P2, P3 and P4 are inserted into the corresponding pin holes 321, 322, 323, .

Therefore, when the back bracket 310 is rotated about the hinge pin P1, the rotation bracket 320 is also rotated around the hinge pin P1 integrally with the back bracket 310. [

A connection hole 326 is formed in a front lower portion around the hinge pin hole 321 of the rotation bracket 320. A rear end of the side member 230 of the cushion frame 200 is rotatably connected to the connection hole 326 through a bolt B3. The connection hole 326 is formed in the shape of an elongated hole so that the rotation of the connection hole 326 is not inhibited by interference of the connection bolt B3 with the side member 230 when the rotation bracket 320 is rotated. The side member 230 connected to the connection hole 326 can be pulled toward the rear of the vehicle when the pivot bracket 320 integrally rotates in the seat back folding direction do.

The upper fixing pin P2 is positioned at the upper front side with respect to the hinge pin P1. The front upper end of the cushion bracket 270 is formed as an arcuate surface 271 centering on the hinge pin P1 so as not to interfere with the movement path of the upper fixing pin P2 when the back bracket 310 is folded. It is possible to make the rotation of the back bracket 310 more stable by using the arcuate surface 271 as a guide surface by providing a roller on the upper fixing pin P2 and bringing the roller into contact with the arcuate surface 271 have.

The lower fixing pin P3 is positioned at the lower rear side with respect to the hinge pin P1. A latching jaw 272 for supporting the lower fixing pin P3 is formed on the rear surface of the cushion bracket 270 when the seat back is in a normal use state (occupant seated state). That is, the latching jaw 272 serves as a stopper for stopping the rotation of the lower fixing pin P3 when the back bracket 310, which has been rotated forward, returns to its home position, It maintains state.

The cam hinge pin P4 is positioned at the upper rear side with respect to the hinge pin P1. The cam hinge pin (P4) is provided with a cam (330) rotatable about the cam pin (P4).

At an upper rear end of the cushion bracket 270, an arc-shaped engagement surface 273 is formed along the rotation path of the cam 330. Therefore, in a state where the cam 330 is hooked on the engagement surface 273, the back bracket 310 can not be rotated forward, so that the seat back is kept in a used state.

The cam 330 is provided with a guide pin P5 spaced apart from the cam hinge pin P4 by a predetermined distance. One end (inward direction of the sheet) of the guide pin P5 is inserted into the arc-shaped guide hole 311 formed in the back bracket 310 through the cam 330. [ The guide hole 311 is spaced from the cam hinge pin P4 by the same distance as the guide pin P5 in the radial direction. Therefore, when the cam 330 rotates around the cam hinge pin P4, the guide pin P5 is guided by the guide hole 311, so that the rotation of the cam 330 is stabilized.

The guide hole 311 restricts the range of the rotation of the guide pin P5, thereby limiting the upward and downward rotation range of the cam 330. [

A guide hole 325 corresponding to the guide hole 311 is also formed in the pivotal bracket 320. The other end (outward in the sheet) of the guide pin P5 protrudes outwardly of the guide hole 325 as shown in Fig. 5 when the pivot bracket 320 is mounted.

The guide pin P5 protruding outwardly of the pivot bracket 320 is connected to the spring fixing portion 327 formed at the lower end of the pivot bracket 320 via a coil spring 340 (shown schematically as a cylindrical shape). Both ends of the coil spring 340 are formed in a ring shape. The upper end of the coil spring 340 is engaged with the guide pin P5, and the lower end of the coil spring 340 is inserted into the insertion hole 327a formed in the spring fixing part 327, The coil spring 340 serves as a tension spring to always pull the guide pin P5 downward.

The guide pin P5 is connected to a seat back folding lever (not shown) provided on the rear side of the seat back by a wire 350. More specifically, an engaging member 351 formed at an end of the wire 350 is hooked inside the cap 360 (see FIGS. 1 and 2) coupled to the end of the guide pin P5. Therefore, when the user pulls the seat back folding lever, the wire 350 is pulled to pull the guide pin P5 upward, and the cam 330 is rotated upward to move the back bracket 310 lock lock state is released.

Now, the operation of the present invention will be described. (See FIGS. 1 to 5)

6 is a side view of the dive seat in a state before folding back the seat back, showing a general use state. In this state, the lower fixing pin P3 is caught by the engagement protrusion 272 on the rear surface of the cushion bracket 270, so that the seat back can be supported on the back of the passenger without being bent backward any more.

The guide pin P5 is pulled downward by the coil spring 340 so that the cam 330 is retained by the engagement surface 273 of the cushion bracket 270 so that the back bracket 310 moves forward So as to maintain the folding lock state.

Therefore, the pivotal bracket 320 fixed to the back bracket 310 is also held in a fixed state, and the side member 230 connected to the pivotal bracket 320 is also fixed in such a state that forward and backward movement is impossible.

Therefore, since the front and rear positions of the cushion frame 200 are fixed, the dive link 260 connected to the cushion frame 200 can not be rotated, and the load applied to the cushion frame 200 can be stably supported do.

At this time, since the lower end of the cushion bracket 270 is firmly fixed to the mounting bracket 100 with a plurality of bolts, the fixed state of all the parts directly / indirectly connected to the cushion bracket 270 is firmly maintained, The body weight of the user can be firmly and stably supported.

The folding and diving operation of the dive sheet according to the present invention is performed as follows.

When the user pulls the seat back folding lever provided on the back of the seat back, the wire 350 connected thereto pulls the guide pin P5 upward (more precisely, pulls the cap 360 mounted on the guide pin P5) And is released from the engagement surface 273 of the cushion bracket 270.

As described above, the folding lock state by the cam 330 is released, so that the user can fold the seat back by pivoting the seat back forward to pivot the back frame 300 about the hinge pin P1.

7, when the seat back is folded, that is, when the back frame 300 is pivoted forward, the back bracket 310 fixed to the back frame 300 rotates forward, and the back bracket 310 is fixed to the back bracket 310 The pivot bracket 320 is also integrally rotated forward.

The connection hole 326 of the pivot bracket 320 is pivoted rearward about the hinge pin P1 whose position is unchanged so that the pivoting of the cushion frame 200 connected to the connection hole 326 The side member 230 is pulled backward.

The dive link 260 connected to the lower side of the cushion frame 200 is rotated backward by interlocking with the backward movement of the cushion frame 200 to thereby rotate the cushion frame 200 ) Is lowered.

When the folding and diving operation is completed as described above, the back frame 300, the cushion frame 200, and the mounting bracket 100 are in a state as shown in FIG.

In order to return the seat to the use state, it is sufficient to turn the seat back upward. When the back frame 300 is completely rotated upward, the lower fixing pin P3 is caught by the latching jaws 272 on the rear surface of the cushion bracket 270 to maintain the seatback standing. At this time, The guide pin P5 is pulled downward to return the cam 330 to the original position and the cam 330 is hooked on the engagement surface 273 of the cushion bracket 270 so that the seatback can not be turned forward I will catch you.

The back bracket 310 and the pivot bracket 320 return to their original positions in conjunction with the upward rotation of the back frame 300. At this time, the side members 230 are pushed forward by the upward rotation of the pivot bracket 320, The dive link 260 rotates forward to return to the cushion frame 200 support state. Therefore, the occupant can be seated.

As described above, in the vehicle dive seat according to the present invention, the basic folding sheet is provided with the pivot bracket 320, which rotates integrally with the back bracket 310, and the side member 230 of the cushion frame 200, And the rear dive sheet 320 is connected to the rear dive sheet 320. [

Therefore, the number of components (links, hinges, etc.) for the rear dive is reduced, which greatly simplifies the configuration of the apparatus and greatly reduces the possibility of noise during operation.

In addition, the cushion bracket 270, which is a basic component of the seat support, is fixed via a plurality of bolts in addition to a simple structure made up of a small number of parts, so that the seat fixing state becomes more rigid. In the folding and diving operation, A stable fixed state can be maintained, and operational noise is not generated.

Meanwhile, the dive seat according to the present invention can avoid interference with the heat-transfer sheet by diving downward the cushion when the seat back folds backward. Therefore, the allowable height of the headrest provided at the upper end of the seatback can be increased, and the front-rear directional movement of the heat-transfer sheet can be made more freely.

In addition, when the seat is backwardly docked, the height of the folded seat back and the trunk floor are made equal to each other, and the gap between the seat and the trunk floor does not exist due to the close contact of the trunk floor and the rear end of the seatback, Space can be ensured.

Meanwhile, in the dive seat according to the present invention, the length of the seat back is longer than that of the cushion. Therefore, when the seat back is completely folded, the front end portion E2 of the seatback is projected further forward than the front end portion E1 of the cushion as shown in Fig. Therefore, in the seat back folding state, the projecting portion on the upper portion of the headrest front can be positioned in the space in front of the cushion, so that the projecting portion of the headrest comes into contact with the upper portion of the cushion, thereby preventing the space between the cushion and the seatback from being formed.

Therefore, the height of the seat back can be further reduced, and the trunk space can be secured more widely, and various types of headrests can be applied.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

100: Mounting bracket 110: Dive link mounting part
200: Cushion frame 210: Front member
220: rear member 230: side member
240: Support spring 250: Dive link base bracket
260: Dive link 270: Cushion bracket
300: back frame 310: back bracket
320: Rotation bracket 330: Cam
340: coil spring 350: wire
B1, B2, B3: Bolt P1: Hinge pin
P2: Upper fixing pin P3: Lower fixing pin
P4: Cam hinge pin P5: Guide pin

Claims (6)

Mounting brackets fixed to the floor,
A dive link rotatably connected at its lower end to the lower portion of the mounting bracket and the cushion frame, the dive link being pivoted rearward about a lower end when the cushion frame is moved backward;
A cushion bracket fixed to the rear end of the mounting bracket so as not to be rotatable through a plurality of bolts,
A back bracket fixed to a side surface of the back frame and rotatably connected to the cushion bracket,
And a pivotal bracket fixed to the back bracket and integrally rotated, and a rear end of the cushion frame is rotatably connected to one side so as to pull the cushion frame backward when the back frame is folded,
A back bracket is disposed on the inner side of the cushion bracket and a pivot bracket is disposed on the outside of the cushion bracket and a hinge pin is provided through the pivot bracket, the cushion bracket and the back bracket, And the rear end of the side member of the cushion frame is rotatably mounted to the connection hole formed in the lower front of the hinge pin in the pivot bracket. The pivoting bracket is fixed to the back bracket via the upper fixing pin, the lower fixing pin and the cam hinge pin, Wherein the dive seat is connected to the vehicle seat. delete The method according to claim 1,
The cam hinge pin is disposed on the upper rear side with respect to the hinge pin, the cam is rotatably installed on the cam hinge pin, and the arc-shaped engaging surface is formed on the upper rear end of the cushion bracket to catch the cam in the seat back folding direction And a dive seat for a vehicle. The method according to claim 1,
Wherein the lower fixing pin is disposed at a lower rear side with respect to the hinge pin and a latching jaw is formed at a rear side of the cushion bracket to catch the lower fixing pin when the seat back is raised, Vehicle dive seat. The method of claim 3,
The cam has a guide pin. One end of the guide pin is inserted into a guide hole formed in the back bracket. The other end is protruded to the outside of the rotation bracket through a guide hole formed in the rotation bracket. A coil spring for pulling down the guide pin is provided between the spring fixing portions formed at the lower portion of the bracket. The other end of the guide pin is connected to the seat back folding lever installed on the rear side of the seat back via the wire to pull the guide pin upward Wherein the dive seat is formed of a synthetic resin. The method according to claim 1,
The cushion frame includes a front member, a rear member, and a pair of side members that connect both ends of the front member and the rear member. The dive link base bracket having both ends bent downward is mounted on the lower surface of the front member. And the upper and lower ends of the dive link are rotatably connected to each other between the end portion and the dive link mounting portion formed on the mounting bracket.

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