JP2013147058A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat in which a seat structure can be easily changed into a walk-in attitude without requiring an unlocking operation.SOLUTION: A vehicle seat 1 includes a hinge mechanism 12 that enables a seat back 10 (seat structure) to rotate to a predetermined forward inclining position, separately from a rotary shaft structure by a reclining device 30. The hinge mechanism 12 includes: a spiral spring 14A that applies energizing force to the seat back 10 in a direction to return from an inclined state so as to maintain the seat back 10 to a normal position determined by the reclining device 30 under normal conditions; and a stopper structure (abutting structure between a locking piece 13A and a rear stopper 11B2) to regulate turning of the seat back 10 in the return direction by the energization to the normal position. Under normal conditions, the seat back 10 is elastically held at the normal position by the energizing force, however, by pushing and turning the seat back 10 forward, the seat back is elastically inclined to a predetermined forward inclined position.

Description

  The present invention relates to a vehicle seat. More specifically, a rotation shaft mechanism that pivotably attaches the seat structure to a base body that supports the seat structure, and a normal position that is determined by the rotation shaft mechanism separately from the rotation structure by the rotation shaft mechanism. The present invention relates to a vehicle seat having a hinge mechanism capable of being rotated to a predetermined inclination angle.

  2. Description of the Related Art Conventionally, some vehicle seats are provided with a walk-in function that allows a seat back to be tilted forward to a forward tilt position so that a passenger can get in and out of the rear seats widely (Patent Document 1). . The vehicle seat disclosed in this document 1 has a hinge part that allows the intermediate part of the seat back to be folded for walk-in, separately from the reclining device that connects the seat back so that the backrest angle can be adjusted. The seat back is tilted forward around the hinge portion so that the seat back can be tilted to the forward tilt position.

JP 2009-208547 A

  In the prior art described in Patent Document 1, a locking mechanism is set in the above-described hinge portion so that the seat back is normally held so as not to be folded forward and backward. Since this lock mechanism has a configuration that requires a manual release operation, the manual release operation must be performed each time the seat back is switched to the walk-in posture, which is cumbersome. The present invention was devised to solve the above problems, and the problem to be solved by the present invention is that the seat structure can be easily switched to the walk-in posture without requiring unlocking operation. There is in doing so.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
According to a first aspect of the present invention, a seat structure is defined by the rotating shaft mechanism separately from a rotating shaft mechanism that pivotably mounts the seat structure to a base body that supports the seat structure, and a rotating structure by the rotating shaft mechanism. And a hinge mechanism that allows the vehicle to be rotated from a normal position to a predetermined tilt angle. The hinge mechanism is provided with a holding mechanism for holding the seat structure in a normal position at normal times. The holding mechanism includes a spring that applies an urging force in a direction to return the inclination to the seat structure, and a stopper structure that restricts rotation of the seat structure in the return direction by the spring at a normal position. The holding mechanism normally holds the seat structure at the normal position where the stopper structure restricts by the biasing force of the spring, but elastically pushes the seat structure to a predetermined inclination angle against the biasing force of the spring. It can be turned.

  According to the first aspect of the present invention, the hinge mechanism that allows the seat structure to be rotated from the normal position to a predetermined inclination angle is configured to hold the seat structure in a state in which the seat structure is pressed to the normal position by the spring. As described above, the sheet structure can be elastically pushed to a predetermined inclination angle against the urging force of the spring. Therefore, the seat structure can be rotated to a predetermined inclination angle such as a walk-in posture without requiring an unlocking operation.

  According to a second invention, in the first invention described above, the seat structure is a seat back, the rotating shaft mechanism is a reclining mechanism that connects the seat back to the base body so that the backrest angle can be adjusted, and the hinge mechanism. Is configured to allow the seat back to be rotated from a backrest angle position determined by a reclining mechanism to a forward tilt position having a predetermined tilt angle.

  According to the second aspect of the invention, the seat back normally receives the load on which the occupant leans by the stopper structure. However, the seat back falls to the forward inclined position by the operation of pushing the seat back forward, and the rear seat It is possible to switch to a state where a passenger can get on and off the boarding space. In this manner, the operation of switching the seat back to the walk-in posture can be easily performed.

  According to a third invention, in the second invention described above, the hinge mechanism is arranged side by side in the height direction in the upper part of the reclining mechanism as a structure in which the hinge mechanism is rotated in a manner of folding the seat back. is there.

  According to the third aspect of the invention, both the reclining mechanism and the hinge mechanism can be set with respect to the seat back without being bulky in the axial direction (the seat width direction).

1 is a side view illustrating a schematic configuration of a vehicle seat according to a first embodiment. It is a side view showing the state where the back angle of the seat back is inclined backward. It is a side view which shows the state which pushed down the seat back to the forward tilt position. It is a disassembled perspective view which shows the structure of a hinge mechanism. It is the VV sectional view taken on the line of FIG. FIG. 6 is a side view illustrating a schematic configuration of a vehicle seat according to a second embodiment. It is a side view which shows the state which pushed down the seat back to the forward tilt position. It is the VIII-VIII sectional view taken on the line of FIG. FIG. 6 is a side view illustrating a schematic configuration of a vehicle seat according to a third embodiment. It is a side view which shows the state which pushed down the vehicle seat to the forward leaning position.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the configuration of the vehicle seat 1 according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the vehicle seat 1 of the present embodiment is configured as a passenger seat of a two-door vehicle, and includes a seat back 10 that serves as a backrest for a seated occupant, and a seat cushion 20 that serves as a seating portion. It is equipped with. As shown in FIG. 2, when the seat 1 is used, the vehicle seat 1 releases the fixed state of the backrest angle of the seatback 10 by pulling up the release lever 30 </ b> A, and the backrest angle position Can be freely adjusted back and forth.

  Further, as shown in FIG. 3, when the vehicle seat 1 is not being used by a passenger, the seat back 10 is elastically bent in a bent shape by operating the seat back 10 as it is. It can be pushed and bent forward. As a result, the seatback 10 tilts forward, and the occupant who gets into the rear seat can be switched to a state where the passenger can get on and off from the side door of the vehicle seat 1 in a wide boarding space. . The seat back 10 switched to the above-described forward tilt posture is elastically returned to the normal position before the middle folding by removing the pushing / bending force.

  Hereinafter, a specific configuration of the above-described vehicle seat 1 will be described in detail. As shown in FIG. 1, the seat back 10 has a lower end portion on both the left and right sides that can be prevented from rotating with respect to the rear end portions on both the left and right sides of the seat cushion 20 installed on the vehicle floor. It is connected via a reclining device 30 that functions as a rotating shaft device. Accordingly, the seat back 10 is connected to the seat cushion 20 in a state in which the backrest angle can be adjusted. In addition, each connection part of the seat back 10 and the seat cushion 20 by each of the reclining devices 30 described above is in a state of being covered from the outside by the resin shields 22 attached to the left and right sides of the seat cushion 20. ing. Here, the seat back 10 corresponds to the “seat structure” of the present invention, the seat cushion 20 corresponds to the “base body” of the present invention, and each reclining device 30 corresponds to the “rotary shaft mechanism” and “reclining” of the present invention. Corresponds to "mechanism".

  Specifically, each of the reclining devices 30 described above includes a lower end of the left and right sides of the seat back frame 11 that is assembled in an inverted U shape that forms the skeleton of the seat back 10, and a reverse U in plan view that forms the skeleton of the seat cushion 20. The seat cushion frame 21 assembled in a letter shape is interposed between the rear end portions on both the left and right sides, and these are axially connected so that they can rotate relative to each other around the same axis and can also be prevented from rotating. It has become a state. These reclining devices 30 are normally held in a state in which the rotation of the seat back 10 is locked (locked state) by a later-described rotation stop structure (lock structure) provided therein. Thereby, the seat back 10 is normally held in a state in which the backrest angle is fixed.

  The rotation stopping state by the reclining device 30 is released by an operation of pulling up the release lever 30A provided on the side of the seat cushion 20 outside the vehicle. Specifically, as shown in FIG. 5, operation shafts 30 </ b> B that are operated to release the locked state of the reclining devices 30 by rotation are respectively inserted and assembled in the center of the reclining devices 30. The operation shafts 30B are connected to each other by a connecting rod 30C so as to rotate integrally with each other. A release lever 30A is integrally coupled to the outer end of the operation shaft 30B outside the vehicle among the operation shafts 30B, and each operation is performed by pulling up the release lever 30A. The shafts 30 </ b> B are rotated all at once, and the locked states of the reclining devices 30 are released all at once.

  Each of the reclining devices 30 described above specifically includes a ratchet 31, a guide 32, a pole 33, a slide cam 34, a hinge cam 35, a spiral spring 36, and an outer ring 37. The ratchet 31 is formed of a disk-shaped member, and the outer surface of the ratchet 31 is integrally coupled to the seat back 10. The guide 32 is similarly formed of a disk-shaped member, and the outer disk surface is integrally coupled to the seat cushion 20. The ratchet 31 and the guide 32 have a shape in which their outer peripheral portions protrude in a cylindrical shape in the axial direction, and can be rotated relative to each other by being assembled so that the cylindrical portions are fitted in the axial direction. It is assembled in a state of supporting both inside and outside. These assembly structures constitute a support shaft structure in which the seat back 10 is rotatably supported with respect to the seat cushion 20.

  The pole 33 is supported so as to be movable only inward and outward in the radial direction with respect to the guide 32 (that is, is integrated with the guide 32 in the rotational direction), and is pushed outward by the slide cam 34. As a result, the teeth formed on the outer peripheral surface mesh with the inner peripheral tooth surface (not shown) of the cylindrical portion of the ratchet 31 described above, and the locked state in which relative rotation between the ratchet 31 and the guide 32 is prohibited. It becomes. Then, when the engagement state of the pole 33 is released, the ratchet 31 and the guide 32 are switched to a state in which they can rotate relative to each other.

  The slide cam 34 has a projection shape formed on the outer peripheral surface thereof by slidingly moving on the guide 32 in the radial direction when the hinge cam 35 set therein is rotated by the shaft turning operation of the operation shaft 30B. Thus, the pole 33 is pushed outward in the radial direction and pressed against the inner peripheral tooth surface of the ratchet 31 to be brought into a meshed state. The slide cam 34 is slid in the reverse direction via the hinge cam 35 when the operation shaft 30B is operated in the reverse direction, and the pole 33 is moved radially inward by a hook (not shown). Pull in and remove from the meshed state with the ratchet 31.

  The spiral spring 36 is hooked between the hinge cam 35 and the guide 32 described above, and is normally held in a state in which the slide cam 34 is rotationally biased with respect to the hinge cam 35 in the above-described locking operation direction. It has a configuration. Due to the urging force of the spiral spring 36, the pole 33 is normally pressed against the inner peripheral tooth surface of the ratchet 31 to hold the reclining device 30 in a locked state. Then, the operation shaft 30B is rotated by the lifting operation of the release lever 30A against the urging force of the spiral spring 36, so that the pole 33 is removed from the meshing state with the ratchet 31, and the reclining device 30. The lock state of is released.

  As shown in FIG. 4, the angle range in which the seat back 10 can be rotated forward and backward by the configuration of each reclining device 30 described above is a locking piece provided integrally with the seat back frame 11 (the intermediate frame 11 </ b> B). 13 </ b> B is in an angle range where it hits the protruding front stopper 21 </ b> A or the rear stopper 21 </ b> B formed on the seat cushion frame 21. The seat back 10 has spiral springs 14B hooked on both side portions between the seat back 20 and the seat back 10 and is normally biased in the direction of rotating forward by the biasing force of the spiral springs 14B. It is said that.

  Specifically, the inner ends of the spiral springs 14B are respectively hooked on the locking plates 21C cut and raised from the seat cushion frame 21, and the outer ends of the spiral springs 14B are the seat back described above. It is provided by being hooked on a locking piece 13B provided integrally with the frame 11, respectively. When the seat back 10 is released from the fixed state of the backrest angle by the urging force of the spiral spring 14B, the seat back 10 is raised to a position where it hits the back of the seated occupant, and the back of the seated occupant is lowered or raised. The backrest angle position is adjusted in conjunction with the movement. Here, a thin iron plate-like lid cover 21D is attached and covered from the outside to the hole portion where each locking plate 21C of the seat cushion frame 21 described above is cut and raised.

  Next, the configuration of the hinge mechanism 12 that allows the seat back 10 to be rotated in a folded manner will be described. That is, the seat back frame 11 has a structure in which the left and right side frames are vertically divided into a main body frame 11A forming an upper half frame and an intermediate frame 11B forming a lower half frame. These are hingedly connected to each other by a hinge pin 12A so as to be able to rotate back and forth.

  As shown in FIG. 5, each intermediate frame 11 </ b> B described above is connected to and supported by the rear end portions of the left and right sides of the seat cushion frame 21 by the respective reclining devices 30 described above. The main body frame 11A is pivotally supported and pivotally supported by the hinge pin 12A described above with respect to the intermediate frame 11B. Here, each hinge pin 12A is integrally welded and fixed to each intermediate frame 11B, and the main body frame 11A is rotatably connected to the hinge pin 12A.

  The angle range in which the main body frame 11A can be rotated back and forth with respect to the intermediate frame 11B is such that the locking pieces 13A provided integrally with the main body frame 11A have intermediate portions as shown in FIGS. The angle is in a range of contact with the protruding front stopper 11B1 or rear stopper 11B2 formed on the frame 11B. A spiral spring 14A is hooked between the main body frame 11A and each intermediate frame 11B. Normally, the main body frame 11A is rotated in a rotational direction in which the main body frame 11A tilts backward with respect to each intermediate frame 11B by the urging force of the spiral spring 14A. It is in an energized state. Here, the spiral spring 14 </ b> A corresponds to a “spring” of the present invention.

  Specifically, each spiral spring 14A is provided with an inner end thereof hooked to each hinge pin 12A described above and an outer end thereof hooked to each locking piece 13A described above. It has been. Due to the urging force of these spiral springs 14A, as shown in FIG. 1, the main body frame 11A is normally in contact with each intermediate frame 11B by the above-mentioned locking pieces 13A against the rear stopper 11B2 of each intermediate frame 11B. Thus, the state is elastically held in a standing posture that is locked. As a result, the seat back 10 is normally held in a straight shape without being folded. Here, the structure in which the locking piece 13A is normally engaged with the rear stopper 11B2 corresponds to the “stopper structure” of the present invention, and is elastically held in this restricting position by the urging force of the spiral spring 14A. The structure corresponds to the “holding mechanism” of the present invention.

  Therefore, even if the seat back of the seated occupant leans against the seat back 10 in the normal state, the seat back 10 is folded by the restriction structure by the contact between the respective locking pieces 13A and the rear stopper 11B2. In this state, the occupant's backrest load is stably supported by the structural strength of the main body frame 11A and each of the intermediate frames 11B. However, the seat back 10 is operated around the hinge mechanism 12 as shown in FIG. 3 by operating the seat back 10 forward when the occupant is not seated. It is pushed and bent elastically in a manner that it is bent halfway.

  As a result, the seat back 10 is switched to the forward leaning posture, and the occupant who gets into the rear seat can enter and exit from the side door of the vehicle seat 1 in a wide boarding space. When the seat back 10 is in the forward inclined posture, the seat back 10 is elastically returned to the normal position before the middle folding by the urging force of each spiral spring 14A described above by removing the pushing and bending force described above. It is supposed to be. The above-described operation of folding the seat back 10 forward can be performed regardless of the position of the backrest angle position of the seatback 10, and each backrest angle position determined by each reclining device 30 can be performed. From the (normal position), the locking piece 13A can be pushed forward and bent in a folded manner to a predetermined inclination angle where it comes into contact with the front stopper 11B1.

  Thus, according to the configuration of the vehicle seat 1 of the present embodiment, the hinge mechanism 12 that allows the seat back 10 to rotate from the normal backrest angle position to the predetermined forward tilt angle position is normally used. As a configuration in which the seat back 10 is held in a state of being pressed to a normal position determined by the reclining device 30 by the spiral spring 14A, the seat back 10 can be elastically pushed forward against the urging force of the spiral spring 14A. It becomes the composition which becomes. Therefore, the seat back 10 can be rotated to an inclination angle at which the above-mentioned occupant of the rear seat can be walked in without requiring any unlocking operation. Further, as the structure in which the hinge mechanism 12 is rotated in such a manner that the seat back 10 is bent in the middle, the hinge mechanism 12 is arranged side by side in the height direction above the reclining device 30, so that the reclining device 30 and the hinge mechanism 12 are Both can be compactly arranged and set with respect to the seat back 10 without being bulky in the axial direction (seat width direction). Further, by setting the hinge mechanism 12 to the seat back 10 and rotating the seat back 10 in a folded state, only the upper half portion of the seat back 10 is usually not relative to the lower half portion. At this time, the spring shape of the spiral spring 14 </ b> A can be reduced in size because the urging and holding may be held in an upright state.

  Then, the structure of the vehicle seat 1 of Example 2 is demonstrated using FIGS. In addition, in a present Example, about the location which becomes substantially the same structure and effect | action as the vehicle seat 1 shown in Example 1, the same code | symbol is attached | subjected to these structures, description is abbreviate | omitted, and a different location Will be described in detail with different reference numerals. As shown in FIGS. 6 to 7, the vehicle seat 1 according to the present embodiment has the hinge mechanism 12 arranged and set side by side with each reclining device 30 in the axial direction (seat width direction). The operation of pushing and bending the seat back 10 forward when not in use is configured to push and bend the seat back 10 around the same axis as each reclining device 30.

  Specifically, as shown in FIG. 8, the hinge mechanism 12 is connected to each intermediate frame 11B connected to the seat cushion frame 21 via each reclining device 30 via a stepped cylindrical hinge pipe 12B. Thus, the main body frame 11A is axially coupled so as to be rotatable forward and backward. Here, one end of each hinge pipe 12B is integrally coupled to each intermediate frame 11B, and the main body frame 11A is fitted in the axial direction into a cylindrical portion extending from the inside to the seat inside (axial direction). It has a configuration in which the shaft is rotatably connected.

  The hinge pipes 12B pass through the operation shafts 30B of the reclining devices 30 through the cylinders so that the seat back frame 11 (main body frame 11A) can be rotated back and forth around the reclining devices 30 around the same axis. Yes. In addition, the spiral spring 14A that urges the main body frame 11A in the rotational direction to fall backward with respect to each intermediate frame 11B in a normal state has an inner end portion of the outer periphery of the cylinder of each hinge pipe 12B described above. The outer end is hooked on a locking piece 13A provided on the side surface inside the seat of the main body frame 11A. Each of the hinge pipes 12B has a protrusion-like front that restricts the front-rear rotation of the main body frame 11A by applying the locking pieces 13A to the front and rear of the outer periphery of the hinge pipe 12B. The stopper 12B1 and the rear stopper 12B2 are formed so as to protrude outward in the radial direction (see FIGS. 6 to 7). The main body frame 11A is normally restricted from rotating in the downward direction toward the rear side at a position where the locking pieces 13A come into contact with and lock the rear stopper 12B2 by the urging force of the spiral springs 14A. It is held elastically as a state. Here, the structure in which the locking piece 13A is normally engaged with the rear stopper 12B2 and locked corresponds to the “stopper structure” of the present invention.

  Thus, according to the configuration of the vehicle seat 1 of the present embodiment, the reclining device 30 and the hinge mechanism 12 are arranged with respect to the seat back 10 by arranging the hinge mechanism 12 and the reclining device 30 side by side in the axial direction. Both can be arranged and set compactly in the axial direction so as not to be bulky in the seat height direction.

  Then, the structure of the vehicle seat 1 of Example 3 is demonstrated using FIGS. 9-10. In addition, in a present Example, about the location which becomes substantially the same structure and effect | action as the vehicle seat 1 shown in Example 1, the same code | symbol is attached | subjected to these structures, description is abbreviate | omitted, and a different location Will be described in detail with different reference numerals. The vehicle seat 1 of the present embodiment has a configuration in which the seat back 10 is connected to the seat cushion 20 via the reclining device 30 so that the backrest angle can be adjusted, and the configuration described in the first embodiment described above. The same. However, in the vehicle seat 1 of the present embodiment, the entire vehicle seat 1 is an operation target that is pushed and moved from the rear side when the occupant is not seated and used. Here, the vehicle seat 1 corresponds to a “seat structure” of the present invention.

  Specifically, in the present embodiment, the hinge mechanism 40 is provided by connecting the front lower portions of the left and right sides of the seat cushion 20 to the floor F so as to be rotatable forward and backward. These hinge mechanisms 40 are configured such that the seat cushion 20 is pivotally attached to a base bracket 41 provided integrally on the floor F via a hinge pin 42 so as to be able to rotate back and forth. Each of the hinge pins 42 described above is welded and fixed integrally to the base bracket 41, and the seat cushion 20 is axially connected to the hinge pins 42 so that the seat cushion 20 can be rotated upside down.

  A spiral spring 43 is applied between the base bracket 41 and the seat cushion 20 to apply a biasing force in a rotational direction that always falls backward on the seat cushion 20. The inner ends of the spiral springs 43 are hooked on the hinge pins 42 described above, and the outer ends of the spiral springs 43 are hooked on locking pieces 21 </ b> E provided on the seat cushion 20. The angle range in which the seat cushion 20 can be rotated back and forth with respect to the floor F by the hinge mechanism 40 described above is such that the locking piece 21E described above is a protruding front stopper 41A or rear stopper formed on each base bracket 41. It is between the angle range which hits 41B.

  The vehicle seat 1 is normally provided in the lower rear portion of the seat cushion 20 in a state where the seat cushion 20 is brought down on the rear side and laid down on the floor F by the urging force of each spiral spring 43 described above. Each leg portion 23 thus held is elastically held in a state of being brought into contact with and locked on the floor F. Here, the configuration in which each of the leg portions 23 is normally brought into contact with the floor F and locked is equivalent to the “stopper structure” of the present invention. The vehicle seat 1 is configured as described above by applying force to push the seat back 10 forward against the urging force when the occupant is not seated and used. It is possible to make the boarding space for the passenger who gets up around the hinge mechanism 40 forward and gets into the rear side seat wide.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, in each of the embodiments described above, the reclining device 30 functioning as a rotation shaft device capable of stopping rotation is illustrated as a configuration corresponding to the “rotating shaft mechanism” and the “reclining mechanism” of the present invention. The shaft device and the anti-rotation device may be combined separately. In each of the above-described embodiments, the spiral spring is exemplified as the “spring” according to the present invention. However, other springs such as a tension spring and a compression spring may be used.

1 Vehicle seat (seat structure)
10 Seat back (seat structure)
11 Seat back frame 11A Body frame 11B Intermediate frame 11B1 Front stopper 11B2 Rear stopper (stopper structure)
12 Hinge mechanism 12A Hinge pin 12B Hinge pipe 12B1 Front stopper 12B2 Rear stopper (stopper structure)
13A Locking piece (stopper structure)
13B Locking piece 14A Spiral spring (spring)
14B Spiral spring 20 Seat cushion (base body)
21 Seat cushion frame 21A Front stopper 21B Rear stopper 21C Locking plate 21D Lid cover 21E Locking piece 22 Shield 23 Leg (stopper structure)
30 Reclining device (rotating shaft mechanism, reclining mechanism)
30A Release lever 30B Operation shaft 30C Connecting rod 31 Ratchet 32 Guide 33 Pole 34 Slide cam 35 Hinge cam 36 Spiral spring 37 Outer ring 40 Hinge mechanism 41 Base bracket 41A Front stopper 41B Rear stopper 42 Hinge pin 43 Spiral spring F Floor (stopper structure)

Claims (3)

A rotating shaft mechanism that pivotally attaches the seat structure to a base body that supports the seat structure, and a rotating structure by the rotating shaft mechanism. The seat structure is moved from a normal position determined by the rotating shaft mechanism. A vehicle seat having a hinge mechanism capable of being rotated to a predetermined inclination angle,
The hinge mechanism is provided with a holding mechanism that holds the seat structure in the normal position at a normal time,
The holding mechanism includes a spring that applies an urging force to the seat structure in a direction to return an inclination, and a stopper structure that restricts rotation of the seat structure in the return direction by the spring at the normal position. In a normal state, the seat structure is held at the normal position regulated by the stopper structure by the biasing force of the spring, but the seat structure is held up to the predetermined inclination angle against the biasing force of the spring. A vehicle seat characterized by being configured to be able to be elastically pushed. The vehicle seat according to claim 1,
The seat structure is a seat back, the rotating shaft mechanism is a reclining mechanism that connects the seat back to the base body so that a backrest angle can be adjusted, and the hinge mechanism connects the seat back by the reclining mechanism. A vehicle seat characterized by being configured to be rotated from a determined backrest angle position to a forward tilt position having the predetermined tilt angle. The vehicle seat according to claim 2,
A vehicle seat characterized in that the hinge mechanism is arranged in the height direction in an upper part of the reclining mechanism as a structure that can be rotated in a manner that causes the seat back to be bent.

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