Vehicle seat

Abstract

To provide a vehicle seat which enables reduction of torque applied to a recliner during a collision.SOLUTION: One embodiment of the disclosure includes: a lower arm attached to a cushion frame; and a recliner which is connected to a back frame and the lower arm and swings the back frame in a seat anteroposterior direction relative to the lower arm. The lower arm has: a plate-like recliner plate to which the recliner is fixed and which is fixed to the cushion frame at multiple fixing parts; and an impact absorption hole provided at the recliner plate. The impact absorption hole is arranged at a position sandwiched between a rotation center axis of the recliner and a lowermost fixing part of the multiple fixing parts when viewed from a direction parallel to the rotation center axis of the recliner.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a vehicle seat.

Background Art

[0002] In a vehicle seat disposed in a vehicle or the like, a structure is known in which a recliner is provided between a back frame and a lower arm connected to a cushion frame so that the seat back can swing with respect to the seat cushion (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a vehicle seat in which a recliner is attached to a lower arm, the load on the back frame generated during a vehicle collision is transmitted to the recliner as torque. If this torque continues to be input to the recliner, damage to the recliner, damage to the joint portion between the recliner and the back frame, etc. may occur. As a result, the back frame may tilt.

[0005] One aspect of the present disclosure aims to provide a vehicle seat capable of reducing the torque applied to the recliner during a collision.

Means for Solving the Problems

[0006] One aspect of the present disclosure is a vehicle seat (1) including a seat cushion (2), a seat back (3) swingable in the front-rear direction of the seat with respect to the seat cushion (2), a cushion frame (4) supporting the seat cushion (2), a back frame (5) supporting the seat back (3), a lower arm (6) attached to the cushion frame (4), and a recliner (7) connected to the back frame (5) and the lower arm (6) and configured to swing the back frame (5) in the front-rear direction of the seat with respect to the lower arm (6).

[0007] The lower arm (6) has a plate-shaped recliner plate (61) to which the recliner (7) is fixed and which is fixed to the cushion frame (4) at a plurality of fixing portions (611, 612), and impact absorption holes (62) provided in the recliner plate (61). The impact absorption holes (62) are arranged at a position sandwiched between the rotation center axis of the recliner (7) and the lowermost fixing portion (611) among the plurality of fixing portions (611, 612) when viewed from a direction parallel to the rotation center axis of the recliner (7).

[0008] According to such a configuration, the impact absorption holes (62) are arranged on the load transmission path from the recliner (7) to which torque is input to the cushion frame (4). Therefore, it is possible to induce distortion that absorbs energy in the vicinity of the impact absorption holes (62) of the lower arm (6). Thereby, the torque applied to the recliner (7) can be reduced.

[0009] As a result, breakage of the recliner (7) is suppressed, and deformation of the cushion frame (4) is suppressed. Further, the distortion generated when the recliner (7) and the back frame (5) are joined is absorbed by the impact absorption holes (62). Therefore, breakage at the joint portion between the recliner (7) and the back frame (5) when torque is input to the recliner (7) is suppressed.

[0010] In one aspect of the present disclosure, the lower arm (6) is provided continuously with the shock absorption holes (62) behind the seat of the shock absorption holes (62), and has a bent portion (63) that curves in the thickness direction of the recliner plate (61) so as to deform starting from the shock absorption holes (62), and a first bead (64) that extends starting from the shock absorption holes (62) in front of the seat of the shock absorption holes (62) and protrudes in the thickness direction of the recliner plate (61). According to such a configuration, energy can be absorbed by actively deforming the bent portion (63) when torque is input to the recliner (7). Further, the first bead (64) can propagate the distortion in the lower arm (6) forward of the seat. As a result, the torque reduction effect in the recliner (7) is promoted. Further, the first bead (64) suppresses bending in the thickness direction of the lower arm (6).

[0011] In one aspect of the present disclosure, the width of the first bead (64) in the thickness direction of the recliner plate (61) may be larger than the width of the bent portion (63) in the thickness direction of the recliner plate (61). According to such a configuration, deformation of the bent portion (63) is preferentially induced rather than deformation of the first bead (64). Therefore, the torque reduction effect in the recliner (7) is promoted.

[0012] In one aspect of the present disclosure, the front end of the first bead (64) in front of the seat may be located further in front of the seat than the joint portions (71A, 71B, 71C) between the recliner (7) and the recliner plate (61). According to such a configuration, propagation of distortion to the joint portions (71A, 71B, 71C) can be suppressed, and thus damage to the joint portions (71A, 71B, 71C) can be suppressed.

[0013] In one aspect of the present disclosure, the lower arm (6) may further have a second bead (65) that extends from the end of the recliner plate (61) toward the inside of the recliner plate (61) above the bent portion (63) and protrudes in the thickness direction of the recliner plate (61). According to such a configuration, when a load is input to the lower arm (6), the second bead (65) deforms, so that the energy absorption function of the lower arm (6) can be enhanced.

[0014] In one aspect of the present disclosure, when viewed from a direction parallel to the rotation center axis of the recliner (7), the longitudinal direction of the first bead (64) may intersect the longitudinal direction of the second bead (65). According to such a configuration, the second bead (65) generates a reaction force against the energy absorption of the first bead (64). Therefore, breakage of the lower arm (6) can be suppressed.

[0015] In one aspect of the present disclosure, the shock absorption hole (62) may have a first edge (62A) to which the bent portion (63) is connected, a second edge (62B) to which the first bead (64) is connected, an upper protruding portion (62C) located above the first edge (62A) and the second edge (62B), and a lower protruding portion (62D) located below the first edge (62A) and the second edge (62B). According to such a configuration, distortion propagation from the shock absorption hole (62) to the bent portion (63) and the first bead (64) can be promoted.

[0016] In one aspect of the present disclosure, the shock absorption hole (62) may have a shape in which the width decreases downward. According to such a configuration, the energy absorption efficiency in the vicinity of the shock absorption hole (62) can be enhanced.

[0017] Note that the reference numerals in the above parentheses are examples showing the correspondence with the specific configurations and the like described in the embodiments to be described later, and the present disclosure is not limited to the specific configurations and the like indicated by the reference numerals in the above parentheses.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, embodiments to which the present disclosure is applied will be described with reference to the drawings. [1. First Embodiment] [1-1. Configuration] The vehicle seat 1 shown in FIG. 1 includes a seat cushion 2, a seat back 3, a cushion frame 4, a back frame 5, a lower arm 6, and a recliner 7.

[0020] The vehicle seat 1 is used as a seat for a passenger car. Note that the directions in the following description and each drawing mean the directions in a state where the vehicle seat 1 is assembled to a vehicle (that is, a passenger car). In the present embodiment, the seat width direction coincides with the left-right direction of the vehicle, and the front of the seat coincides with the front of the vehicle.

[0021] The seat cushion 2 is a part for supporting the buttocks of the seated person. The seat back 3 is a part for supporting the back of the seated person. The seat back 3 is swingable in the seat front-rear direction with respect to the seat cushion 2.

[0022] <Cushion Frame> The cushion frame 4 supports the seat cushion 2. The cushion frame 4 has a first side frame 41, a second side frame 42, and a front panel 43.

[0023] The first side frame 41 and the second side frame 42 are each panel-shaped members that extend in the front-rear direction of the seat and are arranged apart from each other in the seat width direction. The first side frame 41 is arranged on the left side of the second side frame 42. The thickness direction of the first side frame 41 and the second side frame 42 is parallel to the seat width direction. The front panel 43 is arranged so as to straddle the front end portion of the first side frame 41 and the front end portion of the second side frame 42.

[0024] <Back frame> The back frame 5 supports the seat back 3 and is swingable in the front-rear direction of the seat together with the seat back 3. The back frame 5 includes a third side frame 51, a fourth side frame 52, an upper panel 53, and a lower panel 54.

[0025] The third side frame 51 and the fourth side frame 52 extend in the vertical direction and are spaced apart from each other in the seat width direction. The third side frame 51 is arranged on the left side with respect to the fourth side frame 52. The thickness direction of the third side frame 51 and the fourth side frame 52 is parallel to the seat width direction.

[0026] The upper panel 53 connects the upper end portions of the third side frame 51 and the fourth side frame 52 in the seat width direction. The lower panel 54 connects the third side frame 51 and the fourth side frame 52 in the seat width direction below the upper panel 53.

[0027] <Lower arm> The lower arm 6 is a plate-shaped frame attached to the first side frame 41 of the cushion frame 4.

[0028] Further, the lower arm 6 is connected to the lower end of the third side frame 51 of the back frame 5 via the recliner 7. That is, the third side frame 51 is connected to the cushion frame 4 by the lower arm 6. The lower arm 6 is disposed outside the seat width direction than the first side frame 41 and the third side frame 51. The features of the lower arm 6 will be described later.

[0029] <Recliner> The recliner 7 is connected to the third side frame 51 of the back frame 5 and the lower arm 6.

[0030] The recliner 7 is a known device configured to swing the back frame 5 in the front-rear direction of the seat with respect to the lower arm 6 and the cushion frame 4. The recliner 7 swings the back frame 5 around a rotation center axis parallel to the seat width direction. As shown in FIG. 2, the recliner 7 includes a recliner body 71, an operation pin 72, and a return spring 73.

[0031] The recliner body 71 has a first joint portion 71A, a second joint portion 71B, and a third joint portion 71C. The first joint portion 71A, the second joint portion 71B, and the third joint portion 71C are convex portions protruding outward in the seat width direction, and are inserted into any of a first opening 614, a second opening 615, and a third opening 616 provided in the lower arm 6. The first joint portion 71A, the second joint portion 71B, and the third joint portion 71C are joined to the lower arm 6 by welding, respectively.

[0032] The recliner body 71 has a lock mechanism for switching the presence or absence of restriction (i.e., locking) of the swing of the third side frame 51. The switching control of the lock of the recliner body 71 is performed by the rotation of the operation pin 72. The operation pin 72 rotates about its axis, for example, by an input from an operation lever (not shown) connected to the operation pin 72.

[0033] A return spring 73 is attached to the operation pin 72. One end of the return spring 73 is fixed to the operation pin 72. The other end of the return spring 73 is fixed to the locking portion 66 of the lower arm 6.

[0034] The return spring 73 biases the operation pin 72 in the direction of locking the recliner body 71. Therefore, when the input to the operation pin 72 is released, the operation pin 72 rotates in the direction of locking the recliner body 71.

[0035] In the present embodiment, members corresponding to the lower arm 6 and the recliner 7 are also provided between the second side frame 42 of the cushion frame 4 shown in FIG. 1 and the fourth side frame 52 of the back frame 5.

[0036] <Features of the lower arm> As shown in FIGS. 3A and 3B, the lower arm 6 has a recliner plate 61, a shock absorption hole 62, a bent portion 63, a first bead 64, a second bead 65, and a locking portion 66.

[0037] (Recliner plate) The recliner plate 61 is a flat plate portion to which the recliner 7 is fixed. The recliner plate 61 is arranged so as to overlap the recliner body 71 from the outside in the seat width direction.

[0038] The thickness direction of the recliner plate 61 is parallel to the seat width direction. The recliner plate 61 has a first fixing portion 611, a second fixing portion 612, an insertion hole 613, a first opening 614, a second opening 615, and a third opening 616.

[0039] The first fixing portion 611 and the second fixing portion 612 are holes through which a first bolt 81 and a second bolt 82 (see FIG. 2) are respectively inserted. The first bolt 81 and the second bolt 82 fasten the recliner plate 61 and the first side frame 41, respectively. That is, the recliner plate 61 is fixed to the cushion frame 4 at the first fixing portion 611 and the second fixing portion 612.

[0040] The first fixing portion 611 is located below and behind the seat relative to the second fixing portion 612. Also, the first fixing portion 611 is located below the shock absorption hole 62, the bending portion 63, and the first bead 64.

[0041] The insertion hole 613 is disposed at a position surrounded by the first opening 614, the second opening 615, and the third opening 616. The insertion hole 613 overlaps with the recliner 7 in the seat width direction. The operation pin 72 is inserted into the insertion hole 613.

[0042] The first joint portion 71A of the recliner body 71 is inserted and joined into the first opening 614. The second joint portion 71B of the recliner body 71 is inserted and joined into the second opening 615. The third joint portion 71C of the recliner body 71 is inserted and joined into the third opening 616.

[0043] The first opening 614 is located in front of the seat of the insertion hole 613 and is the most forward in position among the three openings 614, 615, and 616. The second opening 615 is located below the insertion hole 613. The third opening 616 is located behind the seat of the insertion hole 613 and is the most rearward in position among the three openings 614, 615, and 616.

[0044] (Shock absorption hole) The shock absorption hole 62 is an opening provided in a region of the recliner plate 61 that is below the insertion hole 613 and the second opening 615 and above the first fixing portion 611.

[0045] As shown in FIG. 4, the shock absorption hole 62 is disposed at a position sandwiched between the rotation center axis O of the recliner 7 and the first fixing portion 611, which is the lowermost among the plurality of fixing portions 611 and 612, when viewed from a direction parallel to the rotation center axis O of the recliner 7 (i.e., the seat width direction).

[0046] The rotation center axis O of the recliner 7, the second joint portion 71B of the recliner main body 71, the shock absorption hole 62, and the first bolt 81 (that is, the first fixing portion 611) are arranged in this order from above to below.

[0047] The shock absorption hole 62 has a first edge 62A, a second edge 62B, an upper protruding portion 62C, and a lower protruding portion 62D. A bending portion 63 is connected to the first edge 62A. The first edge 62A constitutes the trailing edge of the shock absorption hole 62. A first bead 64 is connected to the second edge 62B. The second edge 62B constitutes the leading edge of the shock absorption hole 62.

[0048] The upper protruding portion 62C is a space located above the first edge 62A and the second edge 62B. A part of the upper protruding portion 62C is vertically opposed to the second bead 65. The lower protruding portion 62D is a space located below the first edge 62A and the second edge 62B. The lower protruding portion 62D is vertically opposed to the first fixing portion 611.

[0049] The shock absorption hole 62 has a shape in which the width in the front-rear direction of the seat decreases downward. Specifically, the shock absorption hole 62 has a wedge shape in which the distance between the first edge 62A and the second edge 62B in the front-rear direction of the seat decreases downward.

[0050] (Bending portion) The bending portion 63 is provided continuously with the shock absorption hole 62 behind the seat of the shock absorption hole 62. Specifically, the bending portion 63 extends from the first edge 62A of the shock absorption hole 62 to the rear end portion of the recliner plate 61. The bending portion 63 is located above the first fixing portion 611.

[0051] As shown in FIGS. 3A and 3B, the bent portion 63 is curved in the thickness direction of the recliner plate 61 so as to deform starting from the shock absorption hole 62. Specifically, the bent portion 63 protrudes outward in the sheet width direction (that is, the left side) and is curved so as to be compressively deformable in the vertical direction. As shown in FIG. 4, the center line L1 of the bend of the bent portion 63 intersects the vertical direction and extends so as to connect the shock absorption hole 62 and the rear end of the recliner plate 61.

[0052] (First bead) The first bead 64 is a rib portion that extends starting from the shock absorption hole 62 in front of the shock absorption hole 62 in the sheet front direction. Specifically, the first bead 64 extends from the second edge 62B of the shock absorption hole 62 in the sheet front direction to a position between the first fixing portion 611 and the second fixing portion 612. The first bead 64 is located below the first joint portion 71A and the second joint portion 71B.

[0053] The first bead 64 protrudes in the thickness direction of the recliner plate 61. The protruding direction of the first bead 64 is outward in the sheet width direction, which is the same as the protruding direction of the bent portion 63. The first bead 64 is curved so as to be compressively deformable in the vertical direction, similar to the bent portion 63.

[0054] The longitudinal direction (that is, the center line L2) of the first bead 64 intersects the vertical direction. Also, when viewed from a direction parallel to the rotation center axis O of the recliner 7, the longitudinal direction of the first bead 64 is parallel to the center line L1 of the bend of the bent portion 63.

[0055] As shown in FIG. 3B, the width W2 of the first bead 64 in the thickness direction of the recliner plate 61 is larger than the width W1 of the bent portion 63 in the thickness direction of the recliner plate 61. Note that the "width in the thickness direction of the recliner plate 61" means the difference in distance between the most protruding portion and the most recessed portion in the thickness direction (that is, the sheet width direction) of the recliner plate 61.

[0056] As shown in FIG. 4, the front end of the first bead 64 in front of the seat is located in front of the seat with respect to the first joint 71A, the second joint 71B, and the third joint 71C that join the recliner 7 and the recliner plate 61.

[0057] However, the first bead 64 does not reach the end of the recliner plate 61, and the front end of the first bead 64 in front of the seat is located inside the recliner plate 61. The length along the center line L2 of the first bead 64 is greater than the length along the center line L1 of the bending of the bent portion 63.

[0058] (Second bead) The second bead 65 is a rib that extends from the rear end of the recliner plate 61 toward the inside of the recliner plate 61 above the bent portion 63. The second bead 65 is located below the second joint 71B and the third joint 71C.

[0059] The second bead 65 protrudes in the thickness direction of the recliner plate 61. The protruding direction of the second bead 65 is the outside in the seat width direction, which is the same as the protruding direction of the first bead 64. The second bead 65 is curved so as to be compressively deformable in the vertical direction.

[0060] The longitudinal direction of the second bead 65 (that is, the center line L3) intersects the vertical direction. Also, when viewed from a direction parallel to the rotation center axis O of the recliner 7, the longitudinal direction of the second bead 65 intersects the longitudinal direction of the first bead 64.

[0061] The second bead 65 has a shape in which the width increases and the depth (that is, the recess amount) increases as it approaches the rear end of the recliner plate 61 from the inside of the recliner plate 61 (that is, toward the rear). The second bead 65 has a triangular shape in which the apex is located inside the recliner plate 61 and the bottom side is formed by the rear end of the recliner plate 61 when viewed from the thickness direction of the recliner plate 61.

[0062] The tip of the second bead 65 (i.e., the inner end of the recliner plate 61) is located above the shock absorption hole 62. Also, the tip of the second bead 65 is located behind the seat with respect to the first bead 64. That is, the second bead 65 does not overlap the first bead 64 in the vertical direction.

[0063] (Locking portion) The locking portion 66 protrudes outward in the seat width direction from the upper end of the recliner plate 61. A return spring 73 is attached to the locking portion 66.

[0064] [1-2. Effect] According to the embodiment described in detail above, the following effects can be obtained. (1a) The shock absorption hole 62 is arranged on the load transmission path from the recliner 7 to which torque is input to the cushion frame 4. Therefore, near the shock absorption hole 62 of the lower arm 6, a distortion that absorbs energy can be induced. As a result, the torque applied to the recliner 7 can be reduced.

[0065] As a result, breakage of the recliner 7 is suppressed, and deformation of the cushion frame 4 is suppressed. Furthermore, the distortion generated when the recliner 7 and the back frame 5 are joined is absorbed by the shock absorption hole 62. Therefore, breakage at the joint portion between the recliner 7 and the back frame 5 when torque is input to the recliner 7 is suppressed.

[0066] (1b) Energy can be absorbed by actively deforming the bending portion 63 when torque is input to the recliner 7. Also, the distortion in the lower arm 6 can be propagated forward of the seat by the first bead 64. As a result, the torque reduction effect in the recliner 7 is promoted. Also, the bending in the thickness direction of the lower arm 6 is suppressed by the first bead 64.

[0067] (1c) Since the width of the recliner plate 61 of the first bead 64 in the thickness direction is larger than the width of the recliner plate 61 of the bent portion 63 in the thickness direction, the deformation of the bent portion 63 is preferentially induced rather than the deformation of the first bead 64. Therefore, the torque reduction effect in the recliner 7 is promoted.

[0068] (1d) Since the front end of the first bead 64 in front of the seat is located in front of the seat compared to the first joint portion 71A, the second joint portion 71B, and the third joint portion 71C, the propagation of strain to the first joint portion 71A, the second joint portion 71B, and the third joint portion 71C can be suppressed. Therefore, damage at the first joint portion 71A, the second joint portion 71B, and the third joint portion 71C can be suppressed.

[0069] (1e) By deforming the second bead 65 when a load is input to the lower arm 6, the energy absorption function of the lower arm 6 can be enhanced.

[0070] (1f) Since the longitudinal direction of the first bead 64 intersects the longitudinal direction of the second bead 65, the second bead 65 generates a reaction force against the energy absorption of the first bead 64. Therefore, breakage of the lower arm 6 can be suppressed.

[0071] (1g) By having the shock absorption hole 62 with an upward protruding portion 62C located above the first edge 62A and the second edge 62B and a downward protruding portion 62D located below the first edge 62A and the second edge 62B, the propagation of strain from the shock absorption hole 62 to the bent portion 63 and the first bead 64 can be promoted.

[0072] (1h) By having the shock absorption hole 62 with a shape that becomes narrower downward, the energy absorption efficiency in the vicinity of the shock absorption hole 62 can be enhanced.

[0073] [2. Other Embodiments] As described above, the embodiments of the present disclosure have been explained, but it goes without saying that the present disclosure is not limited to the above embodiments and can take various forms.

[0074] (2a) In the vehicle seat of the above embodiment, the width in the thickness direction of the recliner plate of the first bead may be equal to or less than the width in the thickness direction of the recliner plate of the bent portion. Further, the front end of the first bead in front of the seat may be located behind the seat with respect to the joint portion between the recliner and the recliner plate.

[0075] (2b) In the vehicle seat of the above embodiment, when viewed from a direction parallel to the rotation center axis of the recliner, the longitudinal direction of the first bead and the longitudinal direction of the second bead may be parallel.

[0076] (2c) In the vehicle seat of the above embodiment, the shock absorption holes do not necessarily have to have upper protrusions and lower protrusions. Further, the shock absorption holes do not necessarily have to have a shape in which the width decreases downward.

[0077] (2d) In the vehicle seat of the above embodiment, the protruding directions of the bent portion, the first bead, and the second bead may be inside the seat width direction (that is, the side where the recliner is located). Further, the protruding directions of the bent portion, the first bead, and the second bead may be different from each other.

[0078] (2e) The vehicle seat of the above embodiment can also be applied to seats used in automobiles other than passenger cars, and seats used in vehicles such as railway vehicles, ships, and airplanes other than automobiles.

[0079] (2f) The functions of one component in the above embodiment may be distributed as a plurality of components, or the functions of a plurality of components may be integrated into one component. Further, a part of the configuration of the above embodiment may be omitted. Further, at least a part of the configuration of the above embodiment may be added to, replaced with, etc., the configuration of other above embodiments. Note that all aspects included in the technical idea specified from the language described in the claims are embodiments of the present disclosure.

Description of Reference Numerals

[0080] 1…Vehicle seat, 2…Seat cushion, 3…Seat back, 4…Cushion frame, 5…Back frame, 6…Lower arm, 7…Recliner, 41…First side frame, 42…Second side frame, 51…Third side frame, 52…Fourth side frame, 61…Recliner plate, 62…Shock absorption hole, 62A…First edge, 62B…Second edge, 62C…Upper protruding part, 62D…Lower protruding part, 63…Bending part, 64…First bead, 65…Second bead, 66…Locking part, 71…Recliner body, 71A…First joint part, 71B…Second joint part, 71C…Third joint part, 72…Operation pin, 73…Return spring, 81…First bolt, 82…Second bolt, 611…First fixing part, 612…Second fixing part, 613…Insertion hole, 614…First opening, 615…Second opening, 616…Third opening.

Claims

1. A seat cushion, a seat back that is swingable in the front-rear direction of the seat with respect to the seat cushion, a cushion frame that supports the seat cushion, a back frame that supports the seat back, a lower arm attached to the cushion frame, a recliner that is connected to the back frame and the lower arm and is configured to swing the back frame in the front-rear direction of the seat with respect to the lower arm, comprising: The lower arm has a plate-shaped recliner plate to which the recliner is fixed and which is fixed to the cushion frame at a plurality of fixing portions, shock absorption holes provided in the recliner plate, a bent portion that is provided continuously with the shock absorption holes behind the seat and is curved in the thickness direction of the recliner plate so as to deform starting from the shock absorption holes, a first bead that extends starting from the shock absorption holes in front of the seat and protrudes in the thickness direction of the recliner plate, a second bead that extends from the rear end portion of the recliner plate toward the inside of the recliner plate above the bent portion and protrudes in the thickness direction of the recliner plate, and has The shock absorption holes are disposed at a position sandwiched between the rotation center axis of the recliner and the lowermost fixing portion among the plurality of fixing portions when viewed from a direction parallel to the rotation center axis of the recliner. The second bead overlaps the bent portion in the vertical direction and does not overlap the first bead in the vertical direction. A vehicle seat.

2. The vehicle seat according to claim 1, wherein the width of the first bead in the thickness direction of the recliner plate is larger than the width of the bent portion in the thickness direction of the recliner plate. A vehicle seat.

3. The vehicle seat according to claim 1 or claim 2, wherein an end portion of the first bead in front of the seat is located in front of the seat with respect to a joint portion between the recliner and the recliner plate. A vehicle seat.

4. The vehicle seat according to any one of claims 1 to 3, wherein when viewed from a direction parallel to the rotation center axis of the recliner, the longitudinal direction of the first bead intersects the longitudinal direction of the second bead. A vehicle seat.

5. The vehicle seat according to any one of claims 1 to 4, wherein the shock absorption hole a first edge to which the bent portion is connected, a second edge to which the first bead is connected, an upward protruding portion located above the first edge and the second edge, a downward protruding portion located below the first edge and the second edge, and has a vehicle seat.

6. The vehicle seat according to any one of claims 1 to 5, wherein the shock absorption hole has a shape in which the width decreases downward, and is a vehicle seat.

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