Vehicle seat

Abstract

The purpose of the present invention is to provide a vehicle seat including a support member capable of efficiently performing a separation operation when separating a cushion material from a frame. A vehicle seat (S1) is provided with an armrest (5) for supporting a seated person. The armrest (5) is provided with: an armrest frame (30); and a first armrest pad (41) covering the armrest frame (30), the first armrest pad (41) having: a main body part (42) located between the armrest frame (30) and the support surface (5b) and receiving a load of a seated person; and a mounting portion (43) protruding from the main body portion (42) in a direction away from the support surface (5b) and having formed thereon an engagement portion (44) that engages with the armrest frame (30).

Description

Technical Field

[0001] The invention relates to a vehicle seat, in particular to a vehicle seat with a cushion material. Background Art

[0002] The vehicle seat includes a plurality of supporting members for supporting the seated person. Specifically, the vehicle seat includes a seat cushion, a seat back, a headrest, and an armrest, each of which is configured to support the seated person's buttocks, back, head, and arms. This can reduce fatigue of the seated person who sits for a long time.

[0003] In addition, a vehicle seat including an ottoman is disclosed in Patent Document 1. The ottoman has a movable mechanism that is mounted on a seat cushion and is displaceable between a stored state in which the ottoman is stored relative to the seat cushion and an expanded state in which the ottoman is expanded relative to the seat cushion. The expanded ottoman is one of the supporting members constituting the vehicle seat and supports the lower legs of the seated person.

[0004] Here, the support member has, as its basic structure, a frame forming a skeleton of the support member, a cushion material covering the frame and receiving a load of a seated person, and a skin material covering the cushion material.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Publication No. 2017-94870 Summary of the invention

[0008] Problems to be solved by the invention

[0009] The support member allows the seated person to sit in a more relaxed posture on the vehicle seat. However, further improvements are required for the dismantling of the vehicle after it is scrapped. To explain in detail, the support member constituting the vehicle seat needs to be separated from the frame during the dismantling. In the past, the cushion material covering the frame was often fixed by an adhesive, and the work of separating the cushion material from the frame became a heavy workload.

[0010] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a vehicle seat including a support member capable of efficiently performing a separation operation when a cushion material is separated from a frame.

[0011] Technical means of solving problems

[0012] The problem is solved in the following manner, that is, the vehicle seat according to the present invention is a vehicle seat including a support member for supporting a seated occupant, wherein the support member comprises: a frame forming the skeleton of the support member; and a cushion material covering the frame, the cushion material comprising: a cushion main body located between the frame and a support surface for supporting the seated occupant and bearing the load of the seated occupant; and a mounting portion protruding from the cushion main body in a direction away from the support surface and forming a snap-fit ​​portion for snapping with the frame.

[0013] According to the above structure, the supporting member includes a frame forming a skeleton of the supporting member and a cushion material covering the frame, and the cushion material includes a mounting portion having an engaging portion engaged with the frame. Therefore, when the cushion material is separated from the frame, it can be separated simply by releasing the engagement state between the frame and the mounting portion, so that the separation operation can be performed efficiently.

[0014] Furthermore, the engaging portion may be formed on the inner side of an outer peripheral surface of the pad body formed in a direction perpendicular to a direction away from the support surface.

[0015] According to the above configuration, since the engaging portion is formed on the inner side of the outer peripheral surface of the gasket body, it is possible to suppress an increase in size of the gasket material due to formation of the engaging portion.

[0016] Furthermore, the engaging portion may be formed at a position overlapping the frame in a direction perpendicular to the supporting surface.

[0017] According to the above configuration, since the engaging portion is formed at a position overlapping the frame in the direction perpendicular to the support surface, it is possible to suppress the engagement state between the engaging portion and the frame from being released due to the load of the seated person.

[0018] In addition, the frame may include: a pair of parallel frames, which are located at both ends in the left-right direction or the up-down direction and extend parallel to each other; and a connecting frame, which connects the pair of parallel frames at the ends in the long side direction of the pair of parallel frames, and the locking portion is formed at a position overlapping with the connecting frame in a direction orthogonal to the supporting surface.

[0019] According to the structure, the locking portion is formed at a position overlapping with the connecting frame in a direction perpendicular to the supporting surface. Therefore, by shifting the cushioning material away from the connecting frame, the locking state between the locking portion and the connecting frame can be released, thereby enabling efficient separation operations when separating the cushioning material from the frame.

[0020] Furthermore, the engaging portion may be formed at a position overlapping the pair of parallel frames in a direction perpendicular to the support surface.

[0021] According to the above configuration, since the engaging portion is formed at a position overlapping with the pair of parallel frames in a direction perpendicular to the support surface, the cushioning material can be supported by the parallel frames in a state of being appropriately positioned.

[0022] Furthermore, the engaging portion may be formed continuously along the connecting frame and the pair of parallel frames.

[0023] According to the above configuration, the engaging portion is formed continuously along the connecting frame and the pair of parallel frames, so that the cushion material can be supported in a properly positioned state by the connecting frame and the parallel frames.

[0024] In addition, the frame may include a support plate, the support plate being interposed between the pair of parallel frames and supporting the cushion material.

[0025] According to the above configuration, the cushioning material can be supported by the support plate interposed between the pair of parallel frames, so that the cushioning material can be supported by the frames in a state of being appropriately positioned.

[0026] Furthermore, the support plate may be mounted on the frame at a position away from the frame by a connecting member connecting the support plate and the frame.

[0027] According to the above configuration, since the support plate is attached to the frame at a position away from the frame, the thickness of the cushion material can be increased, thereby improving the impact absorption performance of the cushion material.

[0028] In addition, the support plate may be mounted on the frame at a position away from the frame in a direction farther away from the support surface than the frame.

[0029] According to the above configuration, the support plate is attached to the frame in a direction farther from the support surface than the frame is, so that the impact absorption performance due to the cushion material interposed between the support surface and the support plate can be improved.

[0030] Furthermore, the cushion material may be a molded body of a first resin material, and the supporting member may include an outer cushion material that covers the frame and the cushion material and is a molded body of a second resin material different from the first resin material.

[0031] According to the above structure, the cushion material is formed of a first resin material, and the outer cushion material is formed of a second resin material different from the first resin material. Therefore, two different characteristics (for example, the softness of the cushion material) can be combined to bear the load of the seated person, thereby optimizing the characteristics for bearing the load of the seated person.

[0032] Effects of the Invention

[0033] According to the vehicle seat of the present invention, it is possible to provide a vehicle seat including a support member that can efficiently perform a separation operation when separating a cushion material from a frame.

[0034] In addition, it is possible to suppress an increase in the size of the spacer material due to formation of the engaging portion.

[0035] In addition, it is possible to suppress the engagement state between the engagement portion and the frame from being released due to the load of the seated person.

[0036] In addition, the cushion material can be supported by the frame in a properly positioned state.

[0037] In addition, the impact absorption performance of the cushion material can be improved.

[0038] In addition, it is possible to optimize the characteristics for bearing the load of a seated person. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] [ Figure 1 ] is a three-dimensional view of a vehicle seat with the armrest in the storage position, viewed from the oblique front.

[0040] [ Figure 2 ] is a stereoscopic view of a vehicle seat with the armrest in the unfolded position, viewed from the oblique front.

[0041] [ Figure 3 ] is a three-dimensional view of the seat frame viewed from the oblique front.

[0042] [ Figure 4 ] is a front view of the backrest frame.

[0043] [ Figure 5 ] is a front view of the handrail frame.

[0044] [ Figure 6 ] is a back perspective view of the handrail.

[0045] [ Figure 7 ] is an exploded perspective view of the handrail frame and cushioning material.

[0046] [ Figure 8 ] is a three-dimensional view of the armrest frame with cushioning material installed, viewed from the oblique rear.

[0047] [ Fig. 9 ]yes Figure 6 AA cross-section diagram.

[0048] [ Fig.10 ]yes Figure 6 BB cross-section diagram.

[0049] [ Fig.11] is a disassembled stereoscopic view of the armrest frame and cushioning material of a modified example.

[0050] [ Fig.12 ] is a perspective stereogram of the handrail viewed from the oblique rear.

[0051] [ Fig.13 ]yes Fig.12 CC cross-section diagram.

[0052] [ Fig.14 ]yes Fig.12 DD cross-section diagram.

[0053] [ Fig.15 ] is a stereoscopic view of the vehicle seat of the second embodiment as viewed from the oblique front.

[0054] [ Fig.16 ] is a three-dimensional view of the seat frame viewed from the oblique front.

[0055] [ Fig.17 ] is a three-dimensional view of the seat frame with the cushion material installed on the footrest as viewed from the oblique front.

[0056] [ Fig.18 ]yes Fig.17 EE cross-section diagram.

[0057] [ Fig.19 ] is a stereoscopic view of the vehicle seat of the third embodiment as viewed from the oblique front.

[0058] [ Fig. 20 ] is a three-dimensional diagram showing the frame of a seat for a vehicle.

[0059] [ Fig.21 ] is a three-dimensional view showing the impact absorber provided in the headrest according to the first embodiment.

[0060] [ Fig. 22 ] is along Fig.21 1 is a cross-sectional view taken along line A1-A1 of , and is a view showing a state of the headrest before receiving an impact.

[0061] [ Fig.23 ] is a diagram of a headrest showing a state in which the impact-absorbing body is crushed in the front-rear direction due to an impact.

[0062] [ Fig.24 ] is a three-dimensional view showing an impact absorber provided in a headrest according to a second embodiment.

[0063] [ Fig.25 ] is along Fig.24 1 is a cross-sectional view taken along line B1-B1 of the vehicle body, and is a view showing a state of the headrest before receiving an impact.

[0064] [ Fig.26 ] is a diagram of a headrest showing a state in which an impact-absorbing body is crushed in the front-rear direction due to an impact load.

[0065] [ Fig. 27 ] is a diagram of another example of a headrest showing a state in which the impact buffer body is crushed in the front-rear direction due to the impact load.

[0066] [ Fig.28 ] is a three-dimensional view showing an impact absorber provided in a headrest according to a third embodiment.

[0067] [ Fig.29 ] is along Fig.28 1 is a cross-sectional view taken along line C1-C1 of the vehicle body, and is a view showing a state of the headrest before receiving an impact.

[0068] [ Fig.30 ] is a diagram showing the first stage state of the impact absorber that is crushed by impact.

[0069] [ Fig.31 ] is a diagram showing the second stage state of the impact absorber that is crushed by the impact. DETAILED DESCRIPTION

[0070] Hereinafter, a vehicle seat according to an embodiment of the present invention will be described with reference to the accompanying drawings. However, the embodiment described below is intended to facilitate the understanding of the present invention and does not limit the present invention. That is, the present invention can of course be changed and improved without departing from its main purpose, and the present invention includes its equivalents.

[0071] In the following description, the materials, shapes, and sizes of seat components are merely specific examples and do not limit the present invention.

[0072] In addition, as an example of a vehicle seat, a vehicle seat mounted on a vehicle is listed below, and its structural example is described. However, the present invention is not limited to a vehicle seat mounted on a ground-moving vehicle with wheels such as a car or a train, and can also be applied to a seat mounted on an airplane or a ship that moves on other than the ground.

[0073] In the following description, the so-called "seat front-to-back direction" refers to the front-to-back direction of the vehicle seat, and is the direction that is consistent with the front-to-back direction observed from the seated person sitting on the vehicle seat. In addition, the so-called "seat width direction" refers to the lateral width direction of the vehicle seat, and is the direction that is consistent with the left-right direction observed from the seated person sitting on the vehicle seat. In addition, the so-called "up-down direction" refers to the up-down direction of the vehicle seat, and is the direction that is consistent with the vertical direction when the vehicle is traveling on a horizontal plane. In addition, when simply referred to as "outside", it refers to the side closer to the outside in the direction from the center of the vehicle seat toward the outside, and when referred to as "inside", it refers to the side closer to the center in the direction from the outside toward the center of the vehicle seat.

[0074] <Overview of vehicle seat S1>

[0075] Figure 1 A perspective view of a vehicle seat S1 is shown. Figure 2 The perspective view of the vehicle seat S1 when the armrest 5 is located in the deployed position is shown. Figure 3 It is a perspective view of the seat frame F1.

[0076] The vehicle seat S1 is, for example, a rear seat corresponding to a rear seat of a car, and includes a main seat and a passenger seat which are arranged side by side in a seat width direction.

[0077] The vehicle seat S1 is a seat that can be switched between a normal state in which a seated person can sit and a stowed state in which a seat body is stowed in a vehicle body floor.

[0078] Specifically, when the seat occupant operates the backrest operating lever 52 in a normal state, the vehicle seat S1 switches to a storage state in which the seat body is tilted forward and folded and stored in the vehicle body floor. In addition, the seat body is manually raised upward by the seat occupant to return to the use state from the storage state.

[0079] The vehicle seat S1 mainly includes: a main seat including a seat cushion 1 , a seat back 2 , and a headrest 3 ; an auxiliary seat including an armrest 5 and an auxiliary headrest 4 ; and a switching device 50 .

[0080] The seat cushion 1 is a support member for supporting the buttocks of a seated person, and is a seat portion for supporting the seated person from below. The seat cushion 1 has a cushion frame 10 (see Figure 3 ), a cushion material 1a covering a cushion frame 10, and a skin material 1b covering the cushion frame 10 and the cushion material 1a as main structures.

[0081] The seat back 2 is a support member for supporting the back of a seated person, and is a seat back that supports the back of a seated person from behind. The seat back 2 has a back frame 20 forming a skeleton of the seat back 2, a cushion material 2a covering the back frame 20, and a skin material 2b covering the back frame 20 and the cushion material 2a as main structures.

[0082] The headrest 3 is a supporting member for supporting the head of the seated person, and supports the head of the seated person from behind. The headrest 3 has a headrest pillar 3c as a core material, a cushion material 3a covering the headrest pillar 3c, and a skin material 3b covering the headrest pillar 3c and the cushion material 3a as main structures. The auxiliary headrest 4 also has the same structure.

[0083] The armrest 5 can be in a storage position stored in the seat back 2 and in an extended position extended from the storage position toward the front of the seat (see Figure 2 ). The armrest 5 has built-in electrical components 6 such as lighting equipment or audio equipment, and is larger than a normal armrest. The armrest 5 constitutes a part of the seat back 2 in the stowed position and functions as a seat back. On the other hand, it functions as an armrest in the deployed position. The armrest 5 is also generally referred to as a "center armrest".

[0084] The armrest 5 is a supporting member for supporting the back or arms of a seated person. The armrest 5 has an armrest frame 30 forming a framework of the armrest 5, an armrest pad 40 covering the armrest frame 30, and a skin material 5a covering the armrest frame 30 and the armrest pad 40 as main structures.

[0085] A switching device 50 for switching the vehicle seat S1 between the normal state and the stowed state is mounted on the left side of the seat back 2 in the seat width direction.

[0086] The switching device 50 mainly includes a locking member 51, a backrest operating lever 52, and a connecting cable 53 (see Figure 3 The locking member 51 is detachably engaged with a striker 54 provided on the vehicle body and is used to lock the rotation of the backrest frame 20. In addition, the backrest operating lever 52 is an operating member operated to release the locked state of the backrest frame 20. The connecting cable 53 connects the locking member 51 and the backrest operating lever 52.

[0087] In the above description, the switching device 50 can release the locked state of the locking member 51 by operating the backrest operating lever 52 when the seat body is in the normal state.

[0088] When the locked state is released, the seat back 2 is switched to a stowed state in which the seat back 2 is tilted forward by the force applied by the reclining device and is folded together with the seat cushion 1 and stowed in the vehicle body floor.

[0089] <Seat frame F1>

[0090] Next, the seat frame F1 will be described.

[0091] Figure 3 is a three-dimensional diagram of the seat frame F1. Figure 3 As shown, the seat frame F1 has, as main structures, a cushion frame 10 forming a framework of the seat cushion 1 , a back frame 20 forming a framework of the seat back 2 , and an armrest frame 30 forming a framework of the armrest 5 .

[0092] <<Seat frame 10>>

[0093] The seat cushion frame 10 includes a substantially rectangular frame body, which mainly includes a side frame 11, a front frame 12, a rear frame 13, a disc frame 14, and a pressure-bearing member 15. The side frames 11 are arranged on the left and right sides of the seat cushion frame 10. The front frame 12 and the rear frame 13 connect the front end portion and the rear end portion of each side frame 11, respectively. In addition, the plate-shaped disc frame 14 is installed between the front end portions of each side frame 11. The pressure-bearing member 15 is installed on the disc frame 14 and the rear frame 13 and extends in a winding manner.

[0094] The rear end portion of the side frame 11 is connected to the back frame 20 via a seat cushion connection bracket 28 .

[0095] A seat cushion rotating device 16 that rotatably connects the seat cushion frame 10 to the back frame 20 is mounted on the rear end portion of the side frame 11 .

[0096] Furthermore, a support leg 17 is attached to the front end portion of the front frame 12 , which connects the seat cushion frame 10 to the vehicle body floor and supports the seat cushion frame 10 from below.

[0097] <<Backrest frame 20>>

[0098] like Figure 3 and Figure 4 As shown in FIG. 1 , the backrest frame 20 mainly includes a main frame 21 including a substantially rectangular frame-shaped body, a sub-frame 22, a plate-shaped panel frame 23, and a connecting frame 24. The main frame 21 and the T-shaped sub-frame 22 are arranged to be aligned with each other in the seat width direction. The connecting frame 24 connects the left and right side frames 21a and 21b constituting the side portions of the main frame 21 in the seat width direction.

[0099] The main frame 21 and the sub-frame 22 are mounted on the front surface of the panel frame 23 by welding.

[0100] The main frame 21 mainly includes left and right side frames 21a, side frames 21b, an upper frame 21c connecting the upper ends of the left and right side frames 21a and side frames 21b, and a lower frame 21d connecting the lower ends of the left and right side frames 21a and side frames 21b. The left and right side frames 21a, side frames 21b, upper frame 21c, and lower frame 21d are made of pipe materials and are fixed to each other by welding.

[0101] The lower frame 21 d is a member that is elongated in the seat width direction compared to the upper frame 21 c , and extends to the sub-frame 22 .

[0102] A plurality of substantially flat surfaces are formed on the front surface of the upper frame 21c at predetermined intervals in the seat width direction. A pair of headrest guides 3d for supporting the headrest pillars 3c are attached to the portions where these substantially flat surfaces are formed.

[0103] A reinforcement bracket 25A, a reinforcement bracket 25B, and a damper member 26 are provided in the frame of the main frame 21. The reinforcement bracket 25A has the function of connecting the panel frame 23 and the connecting frame 24 and reinforcing the back frame 20. The reinforcement bracket 25B has the function of connecting the side frame 21a and the connecting frame 24 and reinforcing the back frame 20. The damper member 26 has the function of absorbing the impact on the seat back 2.

[0104] An arm connection bracket 27 for connecting to the handrail frame 30 is attached to the lower end of the inner side frame 21a. Figure 5 The arm connection bracket 27 rotatably supports a base end frame 34 of an armrest frame 30 to be described later.

[0105] A cushion connection bracket 28 for connection with the cushion frame 10 is attached to the lower end of the outer side frame 21b. The cushion connection bracket 28 is a plate-shaped member having a step, and is attached to the main frame 21 at the upper end and to the cushion frame 10 at the lower end.

[0106] A plurality of base connection brackets 29 are attached to the lower end portion of the lower frame 21d. The base connection brackets 29 play a role in connecting the main frame 21 to a base member that fixes the vehicle seat S1 to the floor of the vehicle body.

[0107] The subframe 22 mainly includes: a horizontal subframe 22a extending in the seat width direction; and a vertical subframe 22b connected at one end of the horizontal subframe 22a in the extending direction and extending in a long strip in the height direction of the backrest frame 20. The horizontal subframe 22a and the vertical subframe 22b are made of square tube material.

[0108] The horizontal sub-frame 22a is disposed at a substantially central portion in the height direction of the back frame 20. The horizontal sub-frame 22a is disposed so as to connect the side frames 21a of the main frame 21 and the vertical sub-frame 22b.

[0109] The vertical sub-frame 22b is disposed at the end opposite to the main frame 21 side among both ends in the seat width direction of the back frame 20. The lower end of the vertical sub-frame 22b is connected to the extended end of the lower frame 21d by welding.

[0110] like Figure 4 As shown in FIG. 1 , a portion of the panel frame 23 on one side of which the main frame 21 is mounted is formed with a plurality of reinforcing protrusions 23a that protrude toward the main frame 21. To be described in detail, the reinforcing protrusions 23a are formed in a portion of the panel frame 23 on which the main frame 21, the connecting frame 24, and the reinforcing bracket 25A are mounted. Therefore, the mounting rigidity of the main frame 21, the connecting frame 24, and the reinforcing bracket 25A relative to the panel frame 23 can be improved.

[0111] In addition, a plurality of reinforcing protrusions 23b protruding toward the sub-frame 22 are formed in a portion of the panel frame 23 on one side where the sub-frame 22 is mounted. The plurality of reinforcing protrusions 23b are arranged to sandwich the horizontal sub-frame 22a in the height direction of the backrest frame 20. Therefore, the rigidity of the sub-frame 22 can be further improved.

[0112] In addition, a reinforcing bar 23c extending in the height direction of the backrest frame 20 is formed in a portion of the panel frame 23 on the side where the subframe 22 is mounted. The reinforcing bar 23c extends in the up-down direction along the outer peripheral portion of the panel frame 23 located on the inner side in the seat width direction. The vertical subframe 22b is arranged to be sandwiched between the reinforcing bar 23c and the horizontal subframe 22a in the seat width direction. Therefore, the rigidity of the subframe 22 can be further improved.

[0113] <<Handrail frame 30>>

[0114] like Figure 3 , Figure 5 As shown, the handrail frame 30 includes a substantially inverted U-shaped frame, and has left and right side frames 31, a top frame 32, an intermediate frame 33, a base frame 34, and a support plate 35 as main structures. The side frames 31, the top frame 32, the intermediate frame 33, and the base frame 34 are made of pipe materials. On the other hand, the support plate 35 is a plate member.

[0115] The side frames 31 are located at both ends of the armrest frame 30 in the left-right direction and extend parallel to each other. The top end frame 32 and the base end frame 34 connect the top ends of the left and right side frames 31 in the long side direction (at Figure 1 The upper end portion in the stowed state shown in FIG. Figure 1 In addition, between the top frame 32 and the base frame 34, the intermediate frame 33 and the support plate 35 are interposed between the left and right side frames 31. The left and right side frames 31 are equivalent to a pair of parallel frames, and the top frame 32 is equivalent to a connecting frame.

[0116] A pair of sub-headrest guides 4d (see FIG. 4 ) for supporting the sub-headrest pillars 4c are mounted behind the seat of the top frame 32. Figure 3 ). That is, the sub-headrest 4 is mounted on the armrest frame 30 .

[0117] like Figure 5 and Figure 7 As shown, the support plate 35 has a flat central portion and bent portions bent forward at the upper edge and left and right side edges of the support plate 35. In other words, the support plate 35 forms a receiving recessed portion for receiving and supporting the first armrest pad 41 described later through the central portion and the bent portion.

[0118] In addition, a gap G is formed between the left and right side frames 31 and the top frame 32, and the support plate 35. Moreover, the support plate 35 is attached to the side frames 31 and the top frame 32 via the support plate connecting piece 36 existing in the gap G. In this way, by forming the gap G between the side frames 31 and the top frame 32, and the support plate 35, the volume of the first armrest pad 41 can be increased, thereby improving the impact absorption performance of the first armrest pad 41. The support plate connecting piece 36 is equivalent to a connecting member.

[0119] Back to Figure 3 The armrest frame 30 is mounted in front of the backrest frame, more specifically, in front of the sub-frame 22 by pivotally supporting the base end frame 34 on the arm connection bracket 27. The armrest frame 30 can be rotated between the storage position and the deployment position using the base end frame 34 as a rotation axis.

[0120] <Mounting structure of armrest pad 40>

[0121] Next, refer to Figures 6 to 10 The mounting structure of the armrest pad 40 with respect to the armrest frame 30 will be described.

[0122] Figure 6 The rear perspective view of the armrest 5 in the stored state is shown. As described above, the armrest frame 30 has a substantially inverted U-shape. The armrest pad 40 is attached to the armrest frame 30 so as to cover the armrest frame 30 .

[0123] The armrest pad 40 includes a first armrest pad 41 formed of a foamed polypropylene and a second armrest pad 45 formed of a foamed polyurethane. The first armrest pad 41 is mounted on the upper portion of the armrest frame 30 via a mounting portion 43 described later. The first armrest pad 41 has a smaller deformation amount relative to a load than the second armrest pad 45. In other words, the first armrest pad 41 has a better impact absorption performance than the second armrest pad 45.

[0124] The second armrest pad 45 is formed by covering the armrest frame 30 and the first armrest pad 41 with the skin material 5a and then foaming and expanding polyurethane. Therefore, the second armrest pad 45 covers the entire armrest frame 30 and the first armrest pad 41. The second armrest pad 45 has higher flexibility than the first armrest pad 41.

[0125] In this way, the armrest pad 40 is composed of a combination of molded bodies of resin materials having different characteristics (hardness, that is, deformation characteristics relative to load). Therefore, the impact absorption of the first armrest pad 41 and the softness of the second armrest pad 45 can achieve both safety and comfort for the seated person. The second armrest pad 45 corresponds to the outer pad material. In addition, the foamed polypropylene corresponds to the first resin material, and the foamed polyurethane corresponds to the second resin material.

[0126] Figure 7 This is an exploded perspective view of the armrest frame 30 and the first armrest pad 41 as viewed from the rear. Figure 7 As shown, the first armrest pad 41 includes a main body 42 having a substantially rectangular parallelepiped shape, and a mounting portion 43 protruding from the main body 42 toward the rear of the seat. The main body 42 and the mounting portion 43 are formed integrally.

[0127] When the first armrest pad 41 is mounted on the armrest frame 30, the main body 42 is located in front of the armrest frame 30 and receives the load from the back of the seated person (see Fig. 9 ). More specifically, the main body 42 is located between the support surface 5b supporting the seated person and the armrest frame 30, and receives the load received from the back of the seated person together with the second armrest pad 45. The main body 42 corresponds to the pad body.

[0128] Back to Figure 7 The main body 42 has a front surface 42a, a rear surface 42b, and an outer peripheral surface 42c including an upper surface, a lower surface, and left and right side surfaces. The dimension of the main body 42 in the seat front-to-back direction is larger than the dimension of the mounting portion 43 described later in the seat front-to-back direction. However, the main body 42 is not limited to Figure 7The main body portion 42 only needs to be able to bear the load from the seated person and have the impact absorbing performance required of the first armrest pad 41 .

[0129] The mounting portion 43 has a supported surface 43a that contacts the support plate 35 and a side surface 43b on which an engaging portion 44 is formed to engage with the side frame 31 and the top frame 32. The engaging portion 44 has a recess 44a and a bulge 44b. The interval W1 of the recess 44a in the seat width direction is substantially equal to the interval between the inner sides of the left and right side frames 31 (see FIG. Fig.10 ). On the other hand, the bulge 44b bulges outward from the side surface 43b more than the recess 44a. The interval W2 of the bulge 44b in the seat width direction is larger than the interval between the inner sides of the left and right side frames 31. In other words, the recess 44a and the bulge 44b form a fitting groove into which the left and right side frames 31 and the top frame 32 can fit.

[0130] Regarding the armrest frame 30 and the first armrest pad 41, refer to Figure 7 and Figure 8 The process of its installation and disassembly work is explained.

[0131] When the first armrest pad 41 is mounted on the armrest frame 30, the bulging portion 44b is first pressed from the left and right sides to be deformed so as to be able to pass between the left and right side frames 31. Next, the bulging portion 44b is inserted between the left and right side frames 31, and the supported surface 43a of the mounting portion 43 is in contact with the support plate 35. Finally, the first armrest pad 41 is pressed into the armrest frame 30 so that the left and right side frames 31 and the top frame 32 are fitted into the recessed portion 44a of the engaging portion 44. Thus, the mounting operation of the first armrest pad 41 to the armrest frame 30 is completed.

[0132] Here, if Figure 7 As shown in FIG. 4 , the engaging portion 44 is formed continuously along the left and right side frames 31 and the top frame 32. Fig. 9 As shown, when the first armrest pad 41 is mounted on the armrest frame 30, the bulging portion 44b bulges in a manner overlapping the top frame 32 in the front-rear direction orthogonal to the support surface 5b. Therefore, the engagement state between the engaging portion 44 and the armrest frame 30 can be prevented from being accidentally released.

[0133] In addition, if Fig.10 As shown, the bulging portion 44b bulges in the front-rear direction perpendicular to the support surface 5b so as to overlap with the left and right side frames 31. Therefore, it is possible to more reliably prevent the engagement state between the engaging portion 44 and the armrest frame 30 from being accidentally released.

[0134] In addition, if Fig. 9 and Fig.10 As shown, when the first armrest pad 41 is mounted on the armrest frame 30, the mounting portion 43 is supported to be accommodated in the support plate 35. Therefore, the first armrest pad 41 can be positioned and supported on the armrest frame 30 more appropriately.

[0135] Here, a gap G is formed between the left and right side frames 31 and the top frame 32 and the support plate 35 (see Figure 7 ). In other words, the support plate 35 is installed at a position away from the side frame 31 in a direction farther away from the support surface 5b than the side frame 31. Therefore, the dimension of the bulge 44b in the seat front-to-back direction can be made larger than the dimension of the recess 44a in the seat front-to-back direction. As a result, the first armrest pad 41 can be stably installed on the armrest frame 30, and the impact absorption performance of the first armrest pad 41 can be improved.

[0136] On the other hand, when the first armrest pad 41 is disassembled from the armrest frame 30, initially, the bulging portion 44b is deformed in a manner that it is pressed and shrinks. Next, the first armrest pad 41 is displaced in a manner that it slides downward relative to the armrest frame 30. As a result, the engagement between the engaging portion 44 and the armrest frame 30 is released. As described above, the first armrest pad 41 can be removed from the armrest frame 30. Compared with the conventional case where the armrest pad 40 is fixed using an adhesive, the first armrest pad 41 can be easily separated by releasing the engagement state between the armrest frame 30 and the first armrest pad 41. Therefore, the separation operation of the armrest pad 40 can be performed efficiently. In addition, since the separation operation of the second armrest pad 45 is the same as in the past, a detailed description is omitted.

[0137] In addition, if Figure 7 As shown, the engagement portion 44 is formed on the inner side (center side of the outer peripheral surface 42c) of the outer peripheral surface 42c of the main body portion 42. Therefore, by forming the engagement portion 44, it is possible to suppress the first armrest pad 41 from being enlarged.

[0138] <Modification>

[0139] In the above-described embodiment, the support plate 35 is described as being attached to a position away from the armrest frame 30 in a direction away from the support surface 5 b relative to the armrest frame 30 , but the present invention is not limited thereto.

[0140] Figures 11 to 14 FIG. 3 shows a modified example of an armrest frame 30A and a first armrest pad 41A. Fig.11 As shown, the support plate 35A of the armrest frame 30A of the modified example is attached to a position away from the side frame 31 in a direction closer to the support surface 5 b than the side frame 31 is.

[0141] The first armrest pad 41 of the modified example includes a main body 42A having a substantially rectangular parallelepiped shape and a mounting portion 43A protruding from the main body 42A toward the rear of the seat. The main body 42A and the mounting portion 43A are formed integrally.

[0142] The main body 42A has a front surface 42a, a rear surface 42b, and an outer peripheral surface 42c including an upper surface, a lower surface, and left and right side surfaces. The rear surface 42b is formed with a housing recess 42d for housing the support plate 35A.

[0143] The mounting portion 43A extends rearward from the outer peripheral portion of the rear surface 42b of the main body 42A. The mounting portion 43A has: an outer side surface 43b1 formed to be coplanar with the outer peripheral surface 42c of the main body 42A; and an inner side surface 43b2 formed with an engaging portion 44A that engages with the side frame 31 and the top frame 32. The engaging portion 44A is formed with a recessed portion 44a and a bulging portion 44b. Moreover, the spacing W3 of the recessed portion 44a in the seat width direction has a size that is substantially equal to the spacing of the outer sides of the left and right side frames 31 (see Fig.14 ). On the other hand, the bulge 44b bulges further inwardly of the side surface 43b than the recess 44a. The interval W4 of the bulge 44b in the seat width direction is smaller than the interval of the outer sides of the left and right side frames 31. In other words, the recess 44a and the bulge 44b form a fitting groove in which the side frame 31 and the top frame 32 can fit. In addition, the dimension of the recess 44a in the seat front-to-back direction is larger than the dimension of the receiving recess 42d in the seat front-to-back direction.

[0144] The flow of the installation and removal operations of the armrest frame 30A and the first armrest pad 41A will be described.

[0145] When the first armrest pad 41A is mounted on the armrest frame 30A, the first armrest pad 41A is initially positioned above the armrest frame 30A, and the left and right side frames 31 and the left and right recesses 44a are aligned in an up-and-down manner. Next, the left and right recesses 44a are moved relative to the armrest frame 30A by descending along the left and right side frames 31. Finally, the first armrest pad 41A is pressed into the armrest frame 30A in a manner that the top frame 32 is engaged with the recess 44a of the engaging portion 44. At this time, the support plate 35A is accommodated in the accommodating recess 42d. Thus, the mounting operation of the first armrest pad 41A relative to the armrest frame 30A is completed.

[0146] Here, if Fig.11 As shown in FIG. 4 , the engaging portion 44A is formed continuously along the left and right side frames 31 and the top frame 32. Fig.13As shown, in a state where the first armrest pad 41A is attached to the armrest frame 30A, the bulging portion 44b bulges out so as to overlap with the top end frame 32 in the front-rear direction perpendicular to the support surface 5b.

[0147] In addition, if Fig.14 As shown, the bulging portion 44b bulges in the front-rear direction perpendicular to the support surface 5b so as to overlap with the left and right side frames 31. Therefore, it is possible to prevent the engagement state between the engaging portion 44A and the armrest frame 30A from being accidentally released.

[0148] Moreover, the first armrest pad 41A is attached and engaged so as to wrap around the armrest frame 30A from the outside. Therefore, compared with the above-described embodiment, the first armrest pad 41A can be appropriately positioned and supported on the armrest frame 30A.

[0149] On the other hand, when the first armrest pad 41A is disassembled from the armrest frame 30A, first, the bulging portion 44b is deformed so as to expand to the left and right. Next, the first armrest pad 41 is displaced so as to slide upward relative to the armrest frame 30. As a result, the engagement between the engaging portion 44A and the armrest frame 30A is released. As described above, the first armrest pad 41A can be removed from the armrest frame 30A. As in the first embodiment, the first armrest pad 41A can be easily separated from the armrest frame 30A, so that the separation operation of the armrest pad 40A can be performed efficiently.

[0150] <Second embodiment>

[0151] In the above embodiment, the case where the armrest pad 40 is detached from the armrest frame 30 is described. However, in the second embodiment, the case where the footrest pad 80 is detached from the footrest frame 70 is described.

[0152] Fig.15 A perspective view showing a vehicle seat S2 according to a second embodiment is shown.

[0153] like Fig.15 As shown, the vehicle seat S2 mainly includes a seat body including a seat cushion 1B, a seat back 2B, a headrest 3B, an armrest 5B, and a footrest 7. The vehicle seat S2 is provided on a floor of a vehicle body so as to be movable forward and backward via a slide mechanism 9.

[0154] The footrest 7 is a support member for supporting the lower legs of the seated person. The footrest 7 has a footrest frame 70 (see Fig.16), a footrest pad 80 covering the footrest frame 70, and a skin material 7a covering the footrest frame 70 and the footrest pad 80 as main structures. The footrest pad 80 includes a first footrest pad 81 mounted on the footrest frame 70, and a second footrest pad 85 covering the footrest frame 70 and the first footrest pad 81 as a whole.

[0155] The footrest 7 can be maintained in a posture (rotation angle relative to the seat cushion 1B) according to the operation of the seated person by the angle adjustment mechanism 8. The angle adjustment mechanism 8 can adopt a known mechanism.

[0156] Fig.16 The seat frame F2 is a perspective view of a seat frame F2 built into the seat body. The seat frame F2 has a cushion frame 10B forming the framework of a seat cushion 1B, a backrest frame 20B forming the framework of a seat back 2B, and a footrest frame 70 forming the framework of a footrest 7 as main structures.

[0157] The seat cushion frame 10B includes a substantially rectangular frame body, and mainly includes left and right side frames 11B, a front frame 12B connecting front and rear ends of the left and right side frames 11B, a rear frame 13B, and a pressure-receiving member 15B.

[0158] The footrest frame 70 includes a substantially rectangular frame body, and has left and right footrest side frames 71 , a footrest base frame 72 connecting the base ends and the top ends of the left and right footrest side frames 71 , and a footrest front frame 73 .

[0159] A pair of left and right footrest posts 74 are provided at a distance from each other on the footrest base frame 72. The left and right footrest posts 74 extend parallel to each other. The footrest posts 74 are inserted into a footrest post support portion 75 provided on the front frame 12B of the seat cushion frame 10B. Thus, the footrest frame 70 is attached to the seat cushion frame 10B.

[0160] A support plate 76 is attached to the footrest base frame 72 and the footrest front frame 73 via a support plate connecting piece 77. The support plate 76 is a plate-shaped member and closes the center portion of the frame-shaped footrest frame 70 in the left-right direction. Fig.16 In the embodiment, the support plate 76 only closes the central portion of the footrest frame 70 in the left-right direction, but the present invention is not limited thereto. The support plate 76 may also have a shape and size that closes the entire substantially rectangular frame body formed by the footrest frame 70.

[0161] Fig.1776 is a perspective view of the seat frame F2 in which the first footrest pad 81 is mounted on the support plate 76. The first footrest pad 81 is a molded body of foamed polypropylene. On the other hand, the second footrest pad 85 (see FIG. 1 ) covering the first footrest pad 81 is Fig.15 ) is a molded body of foamed polyurethane. The first footrest pad 81 has a smaller deformation amount relative to a load than the second footrest pad 85. In other words, the first footrest pad 81 has a better impact absorption performance than the second footrest pad 85.

[0162] The second footrest pad 85 covers the entire footrest frame 70 and the first footrest pad 81. The second footrest pad 85 has higher flexibility than the first footrest pad 81.

[0163] As described above, the footrest pad 80 is formed by combining molded bodies of resin materials having different properties. Therefore, it is possible to provide the seated person with the best seating properties. The second footrest pad 85 corresponds to the outer pad material.

[0164] Fig.18 Shows Fig.17 EE sectional view. In addition, for the convenience of explanation, the footrest 7 is shown in a state where it is adjusted to a rotation angle perpendicular to the bottom plate of the vehicle body. Fig.18 As shown in FIG. 1 , the first footrest pad 81 includes a main body 82 and a mounting portion 83 that protrudes from the main body 82 in a direction away from the support surface 7 b. The main body 82 and the mounting portion 83 are formed integrally.

[0165] When the first footrest pad 81 is mounted on the footrest frame 70, the main body 82 receives the load from the calf of the seated person. More specifically, the main body 82 is located between the support surface 7b supporting the seated person, the footrest base frame 72, and the footrest front frame 73, and receives the load from the calf of the seated person together with the second footrest pad 85.

[0166] A snap-fitting portion 84 that snaps into the footrest frame 70 is formed at the side of the mounting portion 83. A recess 84a and a bulge 84b are formed at the snap-fitting portion 84. The interval of the recess 84a has a size that is substantially equal to the interval between the inner sides of the footrest base frame 72 and the footrest front frame 73. On the other hand, the bulge 84b bulges out more upward and downward than the recess 84a. Moreover, the interval of the bulge 84b has a size that is larger than the interval between the inner sides of the footrest base frame 72 and the footrest front frame 73. In other words, the recess 84a and the bulge 84b form an engaging groove that can be engaged with the footrest base frame 72 and the footrest front frame 73. Therefore, it is possible to prevent the snap-fitting state of the snap-fitting portion 84 relative to the footrest frame 70 from being accidentally released when the first footrest pad 81 is installed on the footrest frame 70.

[0167] As for the footrest frame 70 and the first footrest pad 81, the detailed description is omitted because the process of the installation and disassembly operation is the same as that of the above embodiment. As in the above embodiment, the first footrest pad 81 can be easily separated from the footrest frame 70, so that the separation operation of the footrest pad 80 can be carried out efficiently.

[0168] In the above embodiment, the armrest 5 and the footrest 7 are taken as examples of the support member having the frame and the cushion material, but the present invention is not limited thereto. As long as the frame and the cushion material can be easily separated during the disassembly operation of the support member, the present invention can also be applied to support members other than the armrest 5 and the footrest 7.

[0169] In the above embodiment, the first armrest pad 41 is a molded body of foamed polypropylene and the second armrest pad 45 is a molded body of foamed polyurethane, but the present invention is not limited thereto. The first armrest pad 41 and the second armrest pad 45 may be resin molded bodies as long as they can support the load of the seated person and provide comfort to the seated person.

[0170] In the above embodiment, the first armrest pad 41 and the second armrest pad 45 have different hardnesses (deformation amounts relative to loads), but the present invention is not limited thereto. By combining a plurality of pad materials, the pad material properties can be diversified and flexible, and the optimal seating performance including safety can be provided.

[0171] <Third embodiment>

[0172] Hereinafter, a vehicle seat S101 according to a third embodiment will be described.

[0173] A vehicle seat is known for suppressing the load on the neck of an occupant when a vehicle such as an automobile is rear-ended (rear-end collision). Patent literature (Japanese Patent Laid-Open No. 10-181401) discloses an active headrest that moves to approach the head of an occupant during a rear-end collision, or a technology that moves a portion of a seat back frame to allow the occupant's body to sink into the seat back.

[0174] However, the technique described in Japanese Patent Application Laid-Open No. 10-181401 requires a mechanism for moving a part of the headrest or the seat back frame, which complicates the structure of the vehicle seat and increases the weight and cost.

[0175] Therefore, an object is to provide a vehicle seat including a headrest or a seat back that can mitigate the impact at the time of a collision and suppress the load on the neck of an occupant with a simple structure.

[0176] Fig.19 This is a perspective view of the vehicle seat S101 viewed from the front obliquely. Fig. 20 1 is a perspective view showing a seat frame F100 of a vehicle seat S101. Fig.19 , for the convenience of illustration, a portion of the vehicle seat S101 is illustrated in a structure in which the surface member 119, the surface member 129, and the surface member 139 are removed.

[0177] The vehicle seat S101 is a seat placed on the vehicle body floor and for the vehicle occupant H to sit on. In the present embodiment, the vehicle seat S101 is used as a front seat of the vehicle. However, the present invention is not limited thereto, and the vehicle seat S101 may also be a rear seat of the vehicle, or may be used as a middle seat of the second row or a rear seat of the third row in a vehicle having three rows of seats in the front-rear direction.

[0178] like Fig.19 As shown, the vehicle seat S101 mainly includes a seat back 101 as a seat back supporting the back of the occupant H, a seat cushion 102 as a seat portion supporting the buttocks of the occupant H, and a headrest 103 supporting the head of the occupant H. In this embodiment, the headrest 103 is provided at the upper end of the seat back 101 so that the upper and lower positions can be adjusted. In addition, a reclining device 105 (see FIG. 1 ) is sandwiched between the seat cushion 102 and the seat back 101. Fig. 20 ) is connected. In addition, a sliding device 104 is provided at the lower part of the seat cushion 102, and the vehicle seat S101 is placed on the vehicle body floor (refer to Fig. 20 ).

[0179] The vehicle seat S101 is provided with Fig. 20 The seat frame F100 shown in the figure mainly includes a backrest frame 110, a cushion frame 120 and a headrest support column 130. The backrest frame 110 forms the framework of the seat back 101 in the seat frame F100, and the cushion frame 120 forms the framework of the seat cushion 102 in the seat frame F100. In addition, the headrest support column 130 forms the framework of the headrest 103.

[0180] The lower end of the back frame 110 is connected to the rear end of the cushion frame 120 via the reclining device 105 .

[0181] Furthermore, a headrest bracket for holding the headrest support pillar 130 is provided at the upper end of the back frame 110 , and the headrest 103 is attached so as to be movable in the up-down direction.

[0182] The seat back 101 is configured by attaching a back cushion 118 to a back frame 110 and covering the back cushion 118 with a skin member 119 . The seat cushion 102 is configured by placing a seat cushion pad 128 on a seat cushion frame 120 and covering the seat cushion pad 128 with a skin member 129 .

[0183] The headrest 103 is configured by attaching a headrest pad 138 to a headrest pillar 130 and further covering the headrest pad 138 with a skin member 139 .

[0184] The backrest pad 118, the seat cushion pad 128 and the headrest pad 138 are, for example, urethane substrates formed by foaming using a urethane foaming agent. In addition, the surface members 119, 129 and 139 are made of cloth, film, leather or sheet material, etc., and are installed to cover the backrest pad 118, the seat cushion pad 128 and the headrest pad 138 in a state of being stretched in a manner to apply a predetermined tension.

[0185] In this embodiment, if Fig. 20 As shown, the cushion frame 120 is formed into a substantially square frame-shaped outer shape. In addition, the cushion frame 120 includes a pair of cushion side frames 121, 121, which respectively constitute the left and right ends in the seat width direction, a plate frame 122, a front pipe 123, a rear pipe 124, and a spring 125 as main components. The plate frame 122 constitutes the front end of the cushion frame 120. The front pipe 123 and the rear pipe 124 connect the left and right cushion side frames 121 and the cushion side frames 121 at the rear end. The spring 125 is provided in a manner of being bridged between the front pipe 123 and the rear pipe 124.

[0186] The backrest frame 110 mainly includes a pipe processed into a square frame shape, such as Fig. 20 As shown, the backrest frame 110 includes an upper frame 112 in an inverted U shape, a pair of backrest side frames 111, 111 forming the left and right ends in the seat width direction, and a lower frame 113 connecting the lower ends of the pair of backrest side frames 111, 111. In addition, a connecting frame 116 is provided to connect and support the upper and lower extending portions of the upper frame 112. A metal wire 114 is provided to span between the connecting frame 116 and the lower frame 113, and a pressure-receiving member 115 is attached to the metal wire 114. In addition, a shock absorber 151A as a shock absorbing portion 150 is attached to the front surface of the pressure-receiving member 115.

[0187] In addition, the headrest 103 is provided with a headrest support 130 as a headrest frame constituting the skeleton of the headrest 103 as described above. The headrest support 130 is formed in an inverted U-shape when viewed from the front, and a pressure receiving plate 131 is installed inside the U-shape. In addition, a shock absorber 151 is installed on the front surface of the pressure receiving plate 131 in the same manner as the shock absorber 151A of the pressure receiving member 115 installed on the back frame 110. The details of the shock absorber 151 will be described later.

[0188] As the constituent materials of the components constituting the backrest frame 110, the seat cushion frame 120 and the headrest support 130, materials having sufficient rigidity, such as metal materials such as steel or aluminum alloy, can be cited so as not to be greatly deformed when subjected to a load. The means for joining the components constituting the backrest frame 110 and the seat cushion frame 120 to each other is welding, but as the joining means, joining using bolts or adhesives can also be used in combination.

[0189] <First embodiment>

[0190] use Figure 21 to Figure 23 The shock absorber 151 of the shock absorbing portion 150 as a first embodiment will be described. Fig.21 This is a perspective view of a shock absorber 151 of a headrest 103 provided in a vehicle seat S101 as a first embodiment, as viewed from an oblique rear side. Fig. 22 It is along Fig.21 A sectional view taken along line A1-A1 of FIG. 1 and showing a state of the headrest before receiving an impact, Fig.23 The figure shows the impact absorber 151 in a state of being crushed in the seat front-rear direction upon receiving an impact.

[0191] like Fig.21 As shown, the impact absorber 151 is attached to the pressure receiving plate 131 of the headrest pillar 130 and can be crushed in the seat front-rear direction to mitigate the impact when receiving an impact from the front during a collision.

[0192] The impact absorber 151 includes a front surface portion 161 disposed on the passenger side, a rear surface portion 162 disposed further rearward than the front surface portion 161, and a side portion 163 connecting the front surface portion 161 and the rear surface portion 162. Fig.21 and Fig. 22 As shown, the side portion 163 of the impact absorber 151 is formed in a stepped shape in cross section along the seat front-rear direction.

[0193] The impact absorber 151 is arranged to protrude from the pressure receiving plate 131 of the headrest 103 toward the front of the seat. In addition, if the side portion 163 of the impact absorber 151 is described in more detail, the side portion 163 has a plurality of peripheral wall portions 164 arranged in a row in the front-rear direction of the seat, and a plurality of connecting portions 165 that mutually connect the edges of the adjacent peripheral wall portions 164. In addition, the plurality of peripheral wall portions 164 are formed so that the width W in the seat width direction orthogonal to the front-rear direction of the seat or the length H in the seat up-down direction increases as the peripheral wall portion 164 arranged on the front side of the impact absorber increases.

[0194] Specifically, the side portion 163 includes a first peripheral wall portion 164a disposed at the most distal end side, a second peripheral wall portion 164b located behind the first peripheral wall portion 164a, and a third peripheral wall portion 164c located at the most rear side. In addition, the side portion 163 includes a first connecting portion 165a connecting the first peripheral wall portion 164a and the second peripheral wall portion 164b, and a second connecting portion 165b connecting the second peripheral wall portion 164b and the third peripheral wall portion 164c.

[0195] The length H1 and width W2 of the first peripheral wall portion 164a are greater than the length H2 and width W2 of the second peripheral wall portion 164b. In addition, the length H2 and width W2 of the second peripheral wall portion 164b are greater than the length H3 and width W3 of the third peripheral wall portion 164c. In other words, the first peripheral wall portion 164a to the third peripheral wall portion 164c each have a rectangular cross-section, and are formed so that the area increases toward the top end side.

[0196] In addition, the impact absorber 151 is formed so that the length L1 of the first peripheral wall portion 164a in the seat front-to-back direction, the length L2 of the first peripheral wall portion 164a in the seat front-to-back direction, and the length L3 of the first peripheral wall portion 164a in the seat front-to-back direction are equal to each other. By making the lengths of the first peripheral wall portion 164a to the third peripheral wall portion 164c in the protruding direction of the impact absorber 151 (the seat front-to-back direction, the axis X1 direction of the impact absorber 151) equal, the impact absorber 151 can be crushed evenly.

[0197] The first connection portion 165a and the second connection portion 165b are formed in a plate shape whose surfaces are perpendicular to the axis X1.

[0198] The rear surface portion 162 of the shock absorber 151 and the pressure receiving plate 131 can be connected to each other by, for example, bonding with an adhesive or double-sided tape, fastening with screws, locking with locking claws, or the like.

[0199] In addition, the interior of the shock absorber 151 is as follows Fig. 22 As shown, the hollow portion can be easily crushed when impacted from the front, making it easier to absorb the impact.

[0200] Furthermore, since the front surface portion 161 is formed to have a wide area, the load can be more reliably received from the head of the occupant H and can be reliably transmitted to the impact absorber 151 , so that the impact absorber 151 can efficiently absorb the load.

[0201] The impact absorber 151 of the first embodiment can be formed of various materials such as resin materials or metal materials. The resin material can be, for example, a fiber-reinforced resin containing fibers such as polypropylene or polyethylene, carbon or glass, and nanocellulose. When a fiber-reinforced resin is used, the elastic modulus and tensile strength of the material are improved, so that the impact absorber 151 can be thinned or miniaturized. As a result, it is possible to achieve lightweight. When a resin material is used as the material, the impact absorber 151 can be formed by a known molding technique such as injection molding.

[0202] When a fiber-reinforced resin containing nanocellulose is used as a material, the base material may be polyethylene or polypropylene, etc. In addition, it is preferred that the base material forms a lamellar layer, and the lamellar layer is stacked in a direction different from the direction of the nanocellulose fiber length.

[0203] When the head of the occupant H moves due to a rear-end collision of the vehicle, the impact absorber 151 is compressed between the headrest and the occupant in the direction of the axis X1. Fig.23 As shown, the shock absorber 151 is deformed. The side portion 163 of the shock absorber 151 formed in a stepped shape can absorb the load by compressing and deforming.

[0204] In the first embodiment, the outer diameter of the cross section of the peripheral wall portion 164 is formed into a square, but it is not limited to this, and can be set to various shapes such as a rectangle, a polygon, a circle, an ellipse, and a star. In addition, the wall thickness of each vertical wall portion and each horizontal wall portion can be set arbitrarily. The wall thickness of each vertical wall portion and each horizontal wall portion can be set to be equal to each other, or can be set to different values.

[0205] By molding the shock absorber with resin, the degree of crushing can be easily adjusted by adjusting the rigidity of the peripheral wall portion 164 and the connecting portion 165. For example, by changing the thickness of the peripheral wall portion 164 or the connecting portion 165, the order of deformation when receiving an impact can also be adjusted.

[0206] When the impact absorber 151 is provided in the headrest 103, it may be formed by foaming integrally with the headrest pad 108. The headrest 103B may be manufactured by overlaying the impact absorber 151 attached to the headrest pillar 130 and attaching the headrest pad 108.

[0207] <Second embodiment>

[0208] use Figure 24 to Figure 27The shock absorber 152 of the shock absorbing portion 150 as a second embodiment will be described. Fig.24 This is a perspective view of the impact absorber 152 according to the second embodiment as viewed from an oblique rear side. Fig.25 It is along Fig.24 , which is a cross-sectional view taken along line B1-B1 of the headrest 103A and shows the state of the headrest 103A before the impact. Fig.26 The figure shows the impact absorber 152 in a state of being crushed in the seat front-rear direction upon receiving an impact. Fig. 27 This is a diagram showing another example of the impact absorber 152 in a state of being crushed in the seat front-rear direction upon receiving an impact.

[0209] The shock absorber 152 is provided on the headrest 103A of the vehicle seat S102. The structures of the vehicle seat S102 and the headrest 103A are the same as those of the vehicle seat S101 and the headrest 103 of the first embodiment except for the shock absorber 152, so the same reference numerals are used and detailed description is omitted.

[0210] The shock absorber 152 is similar to the first embodiment. Fig.24 As shown, the headrest 103A as the impact absorbing portion 150 mounted on the vehicle seat S102 can be crushed in the seat front-rear direction to absorb the impact when receiving an impact from the seat front direction during a collision.

[0211] like Fig.25 As shown, the impact absorber 152 has an outer shell 170 whose cross section along the seat front-rear direction (the direction of the axis X2 of the impact absorber 152) is formed into an annular shape. In addition, a column 171 extending along the seat front-rear direction (the direction of the axis X2) and supporting the outer shell 170 is provided inside the outer shell 170. The front end of the column 171 abuts against the front part of the outer shell 170, and the rear end abuts against the rear part of the outer shell 170.

[0212] The column portion 171 is configured so that when the outer profile portion 170 is crushed, Fig.26 The outer shell 170 is configured to be crushed when receiving an impact to mitigate the impact, but the degree of crushing of the outer shell 170 can be adjusted by changing the rigidity of the column 171.

[0213] In addition, it can also be constructed as follows Fig. 27 When the impact absorber 152 ′ receives an impact, as in the headrest 103A′ shown, the outer portion 170 is crushed by the column portion 171 ′ being displaced from the axis X2 .

[0214] In addition, if Fig.24 and Fig.25As shown in FIG. 1 , the front side portion 170a of the outer profile 170 is formed into a spherical shape that protrudes toward the front of the seat. In other words, the impact absorber 152 is formed so that the surface on the seated person (passenger H) side is spherical. Fig.26 As shown, the front side portion 170a of the impact absorber 152 (outer portion 170) is configured to match the shape of the head of the occupant H and deform into a spherical shape protruding toward the rear of the seat to be crushed. The front side portion 170a deforms to match the shape of the head of the occupant H, and can hold the head of the occupant H when an impact is received.

[0215] The shock absorber 152 of the second embodiment can also be formed of various materials such as resin material or metal material, similar to the shock absorber 151 of the first embodiment. The resin material can be, for example, a fiber-reinforced resin containing fibers such as polypropylene, polyethylene, carbon, glass, or nanocellulose.

[0216] The shape of the shock absorber 152 when receiving an impact can also be adjusted by changing the thickness of the outer shell portion 170 or the column portion 171 .

[0217] When the shock absorber 152 is provided in the headrest 103, the shock absorber 152 and the headrest pad 108 may be integrally foamed. Alternatively, the headrest 103 may be manufactured by fixing the shock absorber 152 to the headrest pillar 130 and then laminating the headrest pad 108.

[0218] <Third embodiment>

[0219] use Figure 28 to Figure 31 The shock absorber 153 of the shock absorbing portion 150 as a third embodiment will be described. Fig.28 This is a perspective view of the impact absorber 153 according to the third embodiment as viewed from an oblique rear side. Fig.29 It is along Fig.28 , which is a cross-sectional view taken along line C1-C1 of the headrest 103B and shows the state of the headrest 103B before the impact. Fig.30 1 is a diagram showing a state in the first stage where the shock absorber 153 is crushed by the shock. Fig.31 This is a diagram showing a state in the second stage where the shock absorber 153 is crushed by the shock.

[0220] The shock absorber 153 is similar to the shock absorber 151 of the first embodiment and the shock absorber 152 of the second embodiment. Fig.28 As shown, the headrest 103B installed in the vehicle seat S103 as the impact absorbing portion 150 is used to reduce the impact of the vehicle from the front ( Fig.30 When the seat is impacted (in the direction of arrow C), it can be crushed in the front-rear direction of the seat to mitigate the impact.

[0221] like Fig.28 As shown in FIG. 1 , the impact absorbing portion 150 of the third embodiment includes an impact absorber 153 whose cross section perpendicular to the seat width direction is formed into a concave-convex shape. Although it has a simple structure, it can effectively absorb the impact received from the front-rear direction.

[0222] The impact absorber 153 includes a plurality of wall portions 180 arranged orthogonally to the seat front-rear direction (axis X3 direction) and formed in a plate shape, and a plurality of connecting portions 185 connecting the edges of adjacent wall portions 180. To be more specific, the plurality of wall portions 180 include a first wall portion 181, a second wall portion 182, and a third wall portion 183 in order from the seat front side. In addition, the plurality of connecting portions 185 include a first connecting portion 186 connecting the first wall portion 181 and the second wall portion 182, and a second connecting portion 187 connecting the second wall portion 182 and the third wall portion 183.

[0223] Since the impact absorber 153 has a plurality of plate-shaped wall portions 180 and a plurality of connecting portions 185 connecting the edges of adjacent wall portions 180, it is easy to be crushed in the front-rear direction of the seat when impacted. In other words, the impact absorber 153 is easy to be crushed along the axis X3 where the wall portions 180 are arranged. Therefore, although it is a simple structure, it can effectively absorb the impact from the front during a collision.

[0224] The first wall portion 181 has a first edge portion 181 a located on the upper side and a second edge portion 181 b located on the opposite side of the first edge portion 181 a (on the lower side of the first wall portion 181 ).

[0225] The second wall portion 182 includes a first edge portion 182 a located on the upper side and a second edge portion 182 b located on the opposite side of the first edge portion 181 a (on the lower side of the second wall portion 182 ).

[0226] The first edge 182a of the second wall portion 182 corresponds to “one edge” of the present invention, and the second edge 182b corresponds to “the other edge”.

[0227] The third wall portion 183 has a first edge portion 183 a located on the upper side and a second edge portion 183 b located on the opposite side of the first edge portion 181 a (on the lower side of the third wall portion 183 ).

[0228] like Fig.28As shown, the first connection portion 186 of the impact absorber 153 is connected to the first edge 181a of the first wall portion 181 and the first edge 182a (one of the edges) of the second wall portion 182. In addition, the second connection portion 187 connects the second edge 182b (the other edge) located at the lower side of the second wall portion 182 to the second edge 183b of the third wall portion 183.

[0229] By configuring in this way, the crushing mode of the impact absorber 153 can be adjusted in two stages in order to suppress the rotation of the head of the occupant. Since the rotation of the head is suppressed, the burden on the neck of the occupant can be suppressed.

[0230] To explain more specifically, in the case of a rear-end collision in which the vehicle is impacted from the front, Fig.30 As shown, as a first stage, the second connecting portion 187 is bent, and the first edge 182a of the second wall portion 182 is connected to the first edge 183a of the third wall portion 183. By being crushed in this way, the head of the occupant H can rotate upward ( Fig.30 behavior in the direction of arrow D).

[0231] Then, as the second stage, Fig.31 As shown, the first connecting portion 186 is bent, and the second edge 181b of the first wall portion 181 is connected to the second edge 182b of the second wall portion 182. By being crushed in this way, the head of the occupant H can rotate downward ( Fig.31 By being configured so as to be crushed in two stages, the rotation of the head of the occupant H can be suppressed and the impact can be effectively absorbed.

[0232] The shock absorber 153 of the third embodiment can also be formed of various materials such as resin material or metal material, similar to the shock absorber 151 of the first embodiment and the shock absorber 152 of the second embodiment. The resin material can be, for example, a fiber-reinforced resin containing fibers such as polypropylene or polyethylene, carbon or glass, or nanocellulose.

[0233] The shock absorber 153 can also adjust the order of deformation when receiving an impact by varying the thickness of the wall portion 180 or the connecting portion 185 .

[0234] When the shock absorber 153 is molded using resin, it is easy to adjust the rigidity or deformation order of the shock absorber 153 .

[0235] When the impact absorber 153 is provided in the headrest 103B, it may be formed by foaming the headrest pad 108. Alternatively, the headrest 103B may be manufactured by attaching the impact absorber 153 to the headrest pillar 130 and then laminating the headrest pad 108.

[0236] The vehicle seat of the present embodiment has been described above using the drawings. In the second and third embodiments, the shock absorbers 152 and 153 provided in the headrests 103A and 103B are described as examples, but this is an example, and the shock absorbers 152 and 153 may be provided inside the seat back 101. With a simple structure, when an impact occurs, the load can be received from the back of the occupant and the impact can be mitigated.

[0237] About reference Figures 19 to 31 The embodiment described above further discloses the following supplementary notes.

[0238] (Note 1)

[0239] A seat for a vehicle, characterized by comprising:

[0240] Seat backs;

[0241] a headrest coupled to an upper portion of the seat back; and

[0242] The impact absorbing portion is provided in the seat back or the headrest, and when receiving an impact from the front direction of the seat, is crushed in the front-rear direction of the seat to absorb the impact.

[0243] (Note 2)

[0244] The vehicle seat according to Supplement 1 is characterized in that the impact mitigation portion has a shock absorber, the shock absorber having a front surface portion, a rear surface portion arranged at a rear side relative to the front surface portion, and a side portion connecting the front surface portion and the rear surface portion.

[0245] The side portion of the impact absorber is formed in a stepped shape in cross section along the seat front-rear direction.

[0246] (Note 3)

[0247] The vehicle seat according to Supplementary Note 2 is characterized in that the impact absorber protrudes toward the front of the seat,

[0248] The side portion of the impact absorber has a plurality of peripheral wall portions arranged in a row in the seat front-rear direction, and a plurality of connecting portions connecting the edges of the adjacent peripheral wall portions to each other.

[0249] The plurality of peripheral wall portions are formed to have a larger width in a seat width direction or a larger length in a seat up-down direction that is perpendicular to a seat front-rear direction as they are arranged toward the front end side of the impact absorber.

[0250] (Note 4)

[0251] The vehicle seat according to Supplementary Note 3 is characterized in that the plurality of peripheral wall portions of the impact absorber are formed to have mutually equal lengths in the seat front-rear direction.

[0252] (Note 5)

[0253] The vehicle seat according to Supplementary Note 1 is characterized in that the shock absorbing portion has a shock absorbing body having an outer shell portion whose cross section along the front-rear direction of the seat is formed into an annular shape.

[0254] (Note 6)

[0255] The vehicle seat according to Supplementary Note 5 is characterized in that the impact absorber has a column portion extending in the seat front-rear direction inside the outer shell portion and supporting the outer shell portion,

[0256] One end of the column part abuts against the front side of the outer shell part, and the other end of the column part abuts against the rear side of the outer shell part.

[0257] (Note 7)

[0258] The vehicle seat according to Supplementary Note 5 is characterized in that the front portion of the outer shell is formed in a spherical shape protruding toward the front of the seat.

[0259] (Note 8)

[0260] The vehicle seat according to Supplementary Note 1, wherein the impact absorbing portion includes an impact absorber having a concave-convex shape in a cross section perpendicular to the seat width direction.

[0261] (Note 9)

[0262] The vehicle seat according to Supplementary Note 8 is characterized in that the impact absorber protrudes toward the front of the seat,

[0263] The shock absorber includes a plurality of plate-shaped wall portions arranged orthogonally to the seat front-rear direction, and a plurality of connecting portions connecting the edges of adjacent wall portions to each other.

[0264] The plurality of wall portions include a first wall portion, a second wall portion, and a third wall portion in order from the front side.

[0265] The plurality of connection portions include a first connection portion connecting the first wall portion and the second wall portion, and a second connection portion connecting the second wall portion and the third wall portion.

[0266] (Note 10)

[0267] The vehicle seat according to Supplementary Note 9 is characterized in that the first connection portion of the impact absorber is connected to one edge portion of the second wall portion, and the second connection portion is connected to another edge portion of the second wall portion located on the opposite side of the one edge portion.

[0268] According to the vehicle seat of the present invention, it is possible to provide a vehicle seat including a headrest or a seat back that can mitigate impact during a collision and suppress the load on the neck of an occupant with a simple structure.

[0269] Furthermore, by forming the cross section of the side portion of the impact absorber provided as the impact mitigating portion into a stepped shape, the impact received from the front-rear direction can be effectively absorbed despite the simple structure.

[0270] In addition, by forming the step shape, when being crushed, a gap can be formed for the peripheral wall portion of the side portion to enter, and it can be easily crushed. The peripheral wall portion is arranged closer to the top end side of the impact absorber, and the width in the seat width direction or the length in the seat vertical direction is formed to be larger, thereby, for example, the impact from the front of the seat can be received in a wider range, and the impact can be absorbed more effectively.

[0271] Furthermore, since the plurality of peripheral wall portions of the shock absorber are formed to have equal lengths in the seat front-rear direction, the shock absorber can receive the shock in a balanced manner and absorb the shock more effectively.

[0272] Furthermore, since the impact absorbing portion includes the impact absorber having the outer portion formed in a ring-shaped cross section, the impact received from the front and rear directions can be effectively absorbed despite the simple structure.

[0273] Furthermore, by providing the column portion for supporting the outer shell portion inside the outer shell portion, the degree of crushing of the shock absorber can be adjusted, and the shock absorber can absorb the shock more effectively.

[0274] Furthermore, since the front portion of the outer shell is formed into a spherical shape that protrudes toward the front of the seat, damage to the seat back or the headrest can be suppressed even when an impact is applied.

[0275] Furthermore, since the impact absorbing portion has the impact absorber formed in the concavo-convex shape, the impact received from the front and rear directions can be effectively absorbed despite the simple structure.

[0276] In addition, since the impact absorber has a plurality of plate-shaped wall portions and a plurality of connecting portions connecting the edges of adjacent wall portions, it is easy to be crushed in the front-rear direction of the seat when impacted. Therefore, although it has a simple structure, it can effectively absorb impacts received in the front-rear direction.

[0277] Furthermore, by connecting the first connection portion to one edge of the second wall portion and the second connection portion to the other edge of the second wall portion, the impact absorber can be crushed in two stages, thereby suppressing rotation of the occupant's neck and suppressing the load on the neck.

[0278] Explanation of symbols

[0279] S1, S2: Vehicle seats

[0280] S101, S102, S103: Seats for vehicles

[0281] F1, F2, F100: Seat frame

[0282] 1.1B: Seat cushion

[0283] 1a: Gasket material

[0284] 1b: Skin material

[0285] 2.2B: Seat back

[0286] 2a: Gasket material

[0287] 2b: Skin material

[0288] 3.3B: Headrest

[0289] 3a: Padding material

[0290] 3b: Skin material

[0291] 3c: Headrest pillar

[0292] 3d: Headrest guide

[0293] 4: Auxiliary headrest

[0294] 4c: Auxiliary headrest support

[0295] 4d: auxiliary headrest guide

[0296] 5.5B: Handrail (supporting member)

[0297] 5a: Skin material

[0298] 5b: Support surface

[0299] 6: Electrical parts

[0300] 7: Footrest

[0301] 7a: Skin material

[0302] 7b: Support surface

[0303] 8: Angle adjustment mechanism

[0304] 9: Sliding mechanism

[0305] 10, 10B: Seat frame

[0306] 11, 11B: Side frame

[0307] 12, 12B: Front frame

[0308] 13, 13B: Rear frame

[0309] 14: Disc frame

[0310] 15, 15B: Compression member (elastic spring)

[0311] 16: Seat rotation device

[0312] 17: Support feet

[0313] 20, 20B: Backrest frame

[0314] 21: Main frame

[0315] 21a, 21b: Side frame

[0316] 21c: Upper frame

[0317] 21d: Lower frame

[0318] 22: Subframe

[0319] 22a: Horizontal subframe

[0320] 22b: Vertical subframe

[0321] 23: Panel frame

[0322] 23a, 23b: Reinforced convex part

[0323] 23c: Strengthen the stalk

[0324] 24: Linking Frames

[0325] 25A, 25B: Strengthening bracket

[0326] 26: Damper component

[0327] 27: Arm connecting bracket

[0328] 28: Seat cushion connecting bracket

[0329] 29: Base connecting bracket

[0330] 30, 30A: Handrail frame (frame)

[0331] 31: Side frame (parallel frame)

[0332] 32: Top frame (connecting frame)

[0333] 33: Middle frame

[0334] 34: Base frame

[0335] 35, 35A: Support plate

[0336] 36: Support plate connecting piece

[0337] 40, 40A: Armrest pad

[0338] 41, 41A: First armrest pad (pad material)

[0339] 42, 42A: Main body (pad body)

[0340] 42a: front surface

[0341] 42b: rear surface

[0342] 42c: Outer surface

[0343] 42d: Containment recess

[0344] 43, 43A: Installation

[0345] 43a: Supported surface

[0346] 43b: Side

[0347] 43b1: Outside side

[0348] 43b2: Inside side

[0349] 44, 44A: snap-fitting part

[0350] 44a: concave part

[0351] 44b: bulge

[0352] 45: Second armrest pad (outer pad member)

[0353] 50: Switching device

[0354] 51: Locking component

[0355] 52: Backrest operating lever

[0356] 53: Linking Cables

[0357] 54: Impactor

[0358] 70: footrest frame (frame)

[0359] 71: Footrest side frame

[0360] 72: Footrest base frame

[0361] 73: Footrest front frame

[0362] 74: Footrest support

[0363] 75: Footrest support column

[0364] 76: Support plate

[0365] 77: Support plate connecting piece

[0366] 80: Footrest pad

[0367] 81: First footrest pad (pad material)

[0368] 82: Main body

[0369] 83: Installation

[0370] 84: snap-fit ​​part

[0371] 84a: concave part

[0372] 84b: bulge

[0373] 85: Second footrest pad

[0374] 101: Seat Back

[0375] 102: Seat Cushion

[0376] 103, 103A, 103B: Headrest

[0377] 104: Sliding device

[0378] 105: Tilt device

[0379] 110: Backrest frame

[0380] 111: Backrest side frame

[0381] 112: Upper frame

[0382] 113: Lower frame

[0383] 114: Metal wire

[0384] 115: Compression member

[0385] 116: Linking Frames

[0386] 118: Backrest pad

[0387] 119: Surface components

[0388] 120: Seat frame

[0389] 121: Seat side frame

[0390] 122: Disc frame

[0391] 123: Front tube

[0392] 124: Rear pipe

[0393] 128: Seat cushion pad

[0394] 129: Surface components

[0395] 130: Headrest support

[0396] 131: Pressure plate

[0397] 138: Headrest padding

[0398] 139: Skin components

[0399] 150: Impact relief unit

[0400] 151, 151A, 152, 153: Shock absorber

[0401] 161: Front surface

[0402] 162: Rear surface

[0403] 163: Side

[0404] 164: Wall

[0405] 164a: First peripheral wall portion

[0406] 164b: Second peripheral wall portion

[0407] 164c: Third peripheral wall

[0408] 165: Connection

[0409] 165a: First connection part

[0410] 165b: Second connection part

[0411] 170: Outer outline

[0412] 170a: Front part

[0413] 171: Column

[0414] 180: Wall

[0415] 181: First wall

[0416] 181a: First edge

[0417] 181b: Second edge

[0418] 182: Second wall

[0419] 182a: First edge (one of the edges)

[0420] 182b: Second edge (another edge)

[0421] 183: Third wall

[0422] 183a: First edge

[0423] 183b: Second edge

[0424] 185: Connection

[0425] 186: First connection

[0426] 187: Second connection

[0427] G: Gap

[0428] H: Crew

Claims

1. A vehicle seat, comprising a support member for supporting a seated person, wherein the vehicle seat is characterized in that: The supporting member comprises: a frame forming a skeleton of the supporting member; and a cushion material covering the frame. The lining material has: a cushion body located between the frame and a support surface for supporting the seated person and bearing a load of the seated person; and The mounting portion protrudes from the pad body in a direction away from the support surface and is formed with an engaging portion engaged with the frame.

2. The vehicle seat according to claim 1, characterized in that: The engaging portion is formed on the inner side of an outer peripheral surface of the pad body formed in a direction perpendicular to a direction away from the support surface.

3. The vehicle seat according to claim 1, characterized in that: The engaging portion is formed at a position overlapping the frame in a direction perpendicular to the supporting surface.

4. The vehicle seat according to claim 3, characterized in that: The frame comprises: a pair of parallel frames located at both ends in the left-right direction or both ends in the up-down direction and extending parallel to each other; and a connecting frame connecting the pair of parallel frames at the ends in the long-side direction of the pair of parallel frames. The engaging portion is formed at a position overlapping the connecting frame in a direction perpendicular to the supporting surface.

5. The vehicle seat according to claim 4, characterized in that: The engaging portion is formed at a position overlapping the pair of parallel frames in a direction perpendicular to the support surface.

6. The vehicle seat according to claim 5, characterized in that: The engaging portion is formed continuously along the connecting frame and the pair of parallel frames.

7. The vehicle seat according to claim 4, characterized in that: The frame has a support plate, the support plate is interposed between the pair of parallel frames and supports the cushion material.

8. The vehicle seat according to claim 7, characterized in that: The support plate is mounted on the frame at a position away from the frame via a connecting member connecting the support plate and the frame.

9. The vehicle seat according to claim 8, characterized in that: The support plate is mounted on the frame at a position away from the frame in a direction farther away from the support surface than the frame.

10. The vehicle seat according to claim 1, characterized in that: The cushion material is a molded body of a first resin material, The supporting member includes an outer cushion material that covers the frame and the cushion material and is a molded body of a second resin material different from the first resin material.

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