Vehicle seat

Abstract

To provide a vehicle seat which inhibits enlargement of a seat cushion while being able to properly absorb an impact caused to a seated person when an impact, such as a collision, occurs.SOLUTION: A vehicle seat S includes a seat cushion S1, and the seat cushion S1 includes: a seat cushion frame F1; a seat cushion pad S1 placed on the seat cushion frame F1; an impact absorption member 20 provided below a seat cushion pad S11; and an air bag 30 housed in a storage recessed part 21 formed at the impact absorption member 20. The impact absorption member 20 is supported from below by a pan frame 12 serving as a support member. The impact absorption member 20 is configured to deform more easily than the pan frame 12.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat capable of absorbing an impact applied to a seated person when an impact such as a collision occurs.

Background Art

[0002] When a moving vehicle collides head-on, a submarine phenomenon may occur in which the body of a seated person (occupant) sitting on the seat slides downward and forward on the surface of the seat while being restrained by a seat belt. As a countermeasure for suppressing the submarine phenomenon, for example, as described in Patent Document 1, there is known a vehicle seat provided with an occupant protection device in which an airbag is provided between a seat cushion and a base plate, and a shock absorbing member is interposed between the airbag and the seat cushion.

[0003] In the vehicle seat of Patent Document 1, when a vehicle collides, the airbag expands to push up the seat cushion, compresses and hardens the seat cushion, suppresses the submarine phenomenon of the occupant, and even when the occupant is strongly pressed against the front part of the seat cushion, the shock absorbing material plastically deforms and absorbs the shock.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the vehicle seat described in Patent Document 1, since the airbag and the shock absorbing member are arranged so as to overlap in the vertical direction, the size of the seat cushion in the vertical direction has become large.

[0006] The present invention has been made in view of the above problems, and an object thereof is to provide a vehicle seat that appropriately absorbs the impact on an occupant at the time of an impact such as a collision while suppressing an increase in the size of the seat cushion.

Means for Solving the Problems

[0007] According to the vehicle seat of the present invention, the problem is solved by a vehicle seat including a seat cushion, wherein the seat cushion includes a seat cushion frame, a seat cushion pad placed on the seat cushion frame, a shock absorption member provided below the seat cushion pad, and an airbag housed in a storage recess formed in the shock absorption member, the shock absorption member is supported by a support member from below, and the shock absorption member is configured to be more easily deformed than the support member.

[0008] In the vehicle seat of the present invention configured as described above, since the airbag is housed in the storage recess of the shock absorption member, an increase in the size of the seat cushion in the vertical direction is suppressed. Further, since the shock absorption member is more easily deformed than the support member, the shock absorption effect is stably exhibited. Furthermore, the airbag is protected by being housed in the storage recess, and the assemblability with respect to the shock absorption member is also improved.

[0009] Further, in the above configuration, the storage recess of the shock absorption member preferably includes a front wall extending in the vertical direction and the width direction of the vehicle seat, and the front wall preferably regulates the deployment direction of the airbag. In the above configuration, it becomes possible to easily control the forward deployment of the airbag by the front wall.

[0010] Further, in the above configuration, the storage recess of the shock absorption member preferably includes a rear wall extending in the vertical direction and the width direction of the vehicle seat, and the rear wall preferably regulates the deployment direction of the airbag. In the above configuration, it becomes possible to easily control the rearward deployment of the airbag by the rear wall.

[0011] In addition, in the above configuration, the storage recess of the shock absorption member may be provided with side walls in the width direction of the vehicle seat, and the side walls may regulate the deployment direction of the airbag. In the above configuration, it becomes possible to easily control the lateral deployment of the airbag by the side walls.

[0012] In addition, in the above configuration, the shock absorption member may be plastically deformed when a load equal to or greater than the deployment load of the airbag is input. In the above configuration, while suppressing the influence on the deployment of the airbag, the shock absorption performance is improved.

[0013] In addition, in the above configuration, the seat cushion pad may be covered with a skin member, and the shock absorption member may be provided with a skin fixing portion for fixing the skin member. In the above configuration, since the skin member is fixed to the skin fixing portion of the shock absorption member, the degree of freedom in setting is improved and the assemblability is improved.

[0014] In addition, in the above configuration, a skin attachment portion attached to the skin fixing portion may be provided at an end of the skin member, and the skin attachment portion may be detached from the skin fixing portion when the airbag is deployed. In the above configuration, since the skin attachment portion is detached from the skin fixing portion of the shock absorption member when the airbag is deployed, the influence on the deployment of the airbag is suppressed, and the degree of freedom in setting in the deployment of the airbag is improved.

[0015] In addition, in the above configuration, the shock absorption member may be provided adjacent to a sinking suppression member that suppresses the sinking of the seated person. In the above configuration, since the shock absorption member is provided adjacent to the sinking suppression member, the positioning of the shock absorption member becomes easy and the assemblability is improved.

[0016] Further, the seat cushion pad has a pad recess formed on the lower surface, and a part of the upper surface of the shock absorption member is housed in the pad recess. In the above configuration, since the shock absorption member is housed in the recess of the seat cushion pad, the application of a compressive load to the seat cushion pad is suppressed, and the assemblability of the shock absorption member to the seat cushion pad is improved.

[0017] Further, in the above configuration, it is preferable that the shock absorption member is provided with a frame attachment portion for attaching to the seat cushion frame. In the above configuration, since the shock absorption member is fixed to the seat cushion frame, the positioning of the shock absorption member becomes easy and the assemblability is improved.

Advantages of the Invention

[0018] According to the vehicle seat of the present invention, since the airbag is housed in the housing recess of the shock absorption member, an increase in the size of the seat cushion in the vertical direction is suppressed. Further, since the shock absorption member is more easily deformed than the support member, the shock absorption effect is stably exhibited. Furthermore, the airbag is protected by being housed in the housing recess, and the assemblability to the shock absorption member is also improved. Also, according to the vehicle seat of the present invention, it is possible to easily control the forward deployment of the airbag by the front wall. Also, according to the vehicle seat of the present invention, it is possible to easily control the rearward deployment of the airbag by the rear wall. Also, according to the vehicle seat of the present invention, it is possible to easily control the lateral deployment of the airbag by the side wall. Also, according to the vehicle seat of the present invention, in the above configuration, while suppressing the influence on the deployment of the airbag, the shock absorption performance is improved. Also, according to the vehicle seat of the present invention, since the skin member is fixed to the skin fixing portion of the shock absorption member, the degree of freedom in setting is improved and the assemblability is improved. Further, according to the vehicle seat of the present invention, when the airbag is deployed, the skin attachment portion is detached from the skin fixing portion of the shock absorption member, so that the influence on the deployment of the airbag is suppressed, and the degree of freedom in setting the deployment of the airbag is improved. Further, according to the vehicle seat of the present invention, since the shock absorption member is provided adjacent to the sinking prevention member, the positioning of the shock absorption member becomes easy and the assemblability is improved. Further, according to the vehicle seat of the present invention, since the shock absorption member is housed in the concave portion of the seat cushion pad, the application of a compressive load to the seat cushion pad is suppressed, and the assemblability of the shock absorption member with respect to the seat cushion pad is improved. Further, according to the vehicle seat of the present invention, since the shock absorption member is fixed to the seat cushion frame, the positioning of the shock absorption member becomes easy and the assemblability is improved.

Brief Description of the Drawings

[0019]

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Mode for Carrying Out the Invention

[0020] Hereinafter, with reference to FIGS. 1 to 13, vehicle seats according to the first and second embodiments of the present invention (hereinafter, the present embodiments) will be described. As the vehicle seat according to the present embodiments, a vehicle seat mounted on a vehicle will be described as an example, but it is not limited to a vehicle seat mounted on a ground vehicle having wheels such as an automobile or a railway, and may be a seat mounted on an aircraft or a ship that moves other than on the ground.

[0021] Note that the embodiments described below are merely examples for facilitating the understanding of the present invention and do not limit the present invention. That is, the shape, dimensions, arrangement, etc. of the members described below can be changed and improved without departing from the spirit of the present invention, and equivalents thereof are of course included in the present invention.

[0022] Regarding the terms indicating directions in this specification, each direction is defined as shown in FIG. 1. Specifically, in the following description, the "front-rear direction" means the front-rear direction as seen from the seat occupant of the vehicle seat, and is the direction that coincides with the traveling direction of the vehicle. The "seat width direction" means the lateral width direction of the vehicle seat, and coincides with the left-right direction as seen from the seat occupant of the vehicle seat. Also, the "vertical direction" means the height direction of the vehicle seat, and coincides with the vertical direction when the vehicle seat is viewed from the front.

[0023] [1. Configuration of Vehicle Seat S] The vehicle seat S according to this embodiment has the appearance shown in FIG. 1. In FIG. 1, a part of the vehicle seat S (specifically, the front end corner of the seat cushion S1) is shown with the trim cover S12 removed for the convenience of illustration.

[0024] The vehicle seat S mainly includes a seat cushion S1 that serves as a seating portion for supporting the buttocks of the occupant, a seat back S2 that serves as a backrest portion for supporting the back of the occupant, and a headrest S3 disposed above the seat back S2 for supporting the head of the occupant. As shown in FIG. 2, the vehicle seat S has a seat frame F mainly composed of a seat cushion frame F1 and a seat back frame F2 as its skeleton.

[0025] The seat cushion S1 is configured by placing a seat cushion pad S11 on a seat cushion frame F1 serving as a skeleton, and further covering the seat cushion pad S11 with a trim cover S12. The seat back S2 is configured by placing a cushion pad (not shown) on the seat back frame F2 and covering it with the trim cover S12. The headrest S3 is formed by arranging a pad material (not shown) on a core material (not shown) and covering it with the trim cover S12. The seat cushion pad S11 of the seat cushion S1 and the seat back pad of the seat back S2 are urethane base materials molded by foam molding using a urethane foam material.

[0026] (Seat Cushion Frame F1) As shown in FIG. 2, the seat cushion frame F1 includes a pair of side frames 11 spaced apart from each other left and right, a pan frame 12 connecting the front end portions of the pair of side frames 11, and a connecting pipe 13 connecting the rear end portions of the pair of side frames 11. These are integrally joined by welding or the like to form a frame shape. The side frames 11 and the pan frame 12 are formed by pressing a metal plate or the like, and the connecting pipe 13 is formed from a metal pipe.

[0027] As shown in FIG. 2, the seat cushion frame F1 of the present embodiment is provided with a submarine pipe 14 for suppressing the submarine phenomenon in which the body of a seated person sitting on the vehicle seat S slides down forward and downward when the vehicle undergoes a frontal collision. The submarine pipe 14 is provided between the left and right side frames 11.

[0028] Further, between the connecting pipe 13 and the submarine pipe 14 of the seat cushion frame F1, a plurality of seat springs 15 as pressure receiving members are installed. Specifically, three seat springs 15 are arranged side by side in the seat width direction, and the front end of each seat spring 15 is hooked on the submarine pipe 14 and the rear end is hooked on the connecting pipe 13, so that they are installed in the front-rear direction of the seat (in other words, the direction orthogonal to the seat width direction).

[0029] [2. Seat Cushion of the First Embodiment] With reference to FIGS. 2 to 7, the configuration of the seat cushion S1 of the vehicle seat S according to the first embodiment of the present invention will be described in detail. The seat cushion S1 according to the present embodiment includes a seat cushion frame F1, a seat cushion pad S11 placed on the seat cushion frame F1, a shock absorbing member 20 provided below the seat cushion pad S11, and an airbag module 30.

[0030] (Shock Absorbing Member 20) As shown in FIGS. 3 to 5, the shock absorption member 20 is provided below the seat cushion pad S11. The shock absorption member 20 is provided with a storage recess 21 and a support recess 22 that are recessed downward from the upper surface. The inflator 31 and the airbag 32 of the airbag module 30 described later are stored in the storage recess 21 and the support recess 22.

[0031] The storage recess 21 includes a front wall 21a and a rear wall 21b that extend in the vertical direction and the seat width direction. The storage recess 21 also includes a bottom wall 21c that extends in the front-rear direction and the seat width direction. Further, the storage recess 21 includes a pair of side walls 21d that are spaced apart in the seat width direction, and the side walls 21d extend in the front-rear direction and the vertical direction.

[0032] The shock absorption member 20 has an engagement recess 23a that is recessed upward at the front end portion 23 at the front, and a latching member F attached to the trim front end portion S12a of the trim cover S12 engages with the engagement recess 23a (FIG. 4). Further, the shock absorption member 20 has a side end recess 24a that is recessed upward at the side end portion 24 that forms the side surface, and a latching member F attached to the trim side end portion S12b of the trim cover S12 engages with the side end recess 24a (FIG. 5).

[0033] (Airbag Module 30) As shown in FIGS. 3 to 5, an airbag module 30 as an airbag device is disposed in the storage recess 21 and the support recess 22 of the shock absorption member 20. The airbag module 30 is a case-less airbag module that does not have a module case. The airbag module 30 includes an inflator 31 and an airbag 32.

[0034] The inflator 31 is cylindrical, and is fixed to the shock absorption member 20 and the seat cushion frame F1 by bolts 31a that extend downward from the outer peripheral portion of the inflator 31 and nuts 31b corresponding to the bolts 31a.

[0035] More specifically, the bolt 31a penetrates through the bottom wall 21c of the storage recess 21 formed in the shock absorption member 20 and the pan frame 12 which is a part of the seat cushion frame F1, and a nut 31b is attached to and fixed to the tip thereof (FIGS. 4 and 5). Note that the inflator 31 may be fixed to the shock absorption member 20 and the seat cushion frame F1 by an inflator attachment member other than a bolt.

[0036] The inflator 31 is a device that generates gas when receiving an input of an operation signal from a sensor (not shown) that senses a collision of the vehicle, and injects the generated gas into the airbag 32 to cause the airbag 32 to expand and deploy. Note that in the present embodiment, the airbag module 30 is configured to be caseless, but is not limited thereto, and may be configured to include a module case.

[0037] The shock absorption member 20 is supported by the seat cushion frame F1 from below. More specifically, the shock absorption member 20 is supported from below by the pan frame 12 below the seat cushion pad S11. The shock absorption member 20 is configured to be more easily deformable than the pan frame 12 which is a support member.

[0038] The shock absorption member 20 may be configured to be crushed to absorb shock when exceeding a certain load value. For example, it may be a blow molded product made of resin having a cavity inside. Note that the shock absorption member 20 is not limited to a blow molded product, and may be a urethane molded product having a cavity and being harder than the seat cushion pad S11 which is a urethane pad, and being crushed to absorb shock when exceeding a certain load value.

[0039] As shown in FIG. 4, in the front-rear direction of the seat, the front end portion 12a of the frame of the pamphlet frame 12 is received and arranged in the receiving recess 23b formed in front of the shock absorbing member 20. Further, as shown in FIG. 5, in the seat width direction, the side end portion 12b of the frame of the pamphlet frame 12 is received and arranged in the side end recess 24a formed in the side end portion 24 of the shock absorbing member 20.

[0040] The inflator 31 and the airbag 32 of the airbag module 30 are accommodated in the storage recess 21 and the support recess 22 which are recesses formed in the shock absorbing member 20. The inflator 31 is stored in the storage recess 21, and the portion of the airbag 32 arranged behind the inflator 31 is placed on the support recess 22 (FIG. 4).

[0041] As shown in FIG. 4, in the vertical direction, the airbag module 30 is arranged between the recesses (the storage recess 21 and the support recess 22) of the shock absorbing member 20 provided below and the lower surface S11a of the seat cushion pad S11 provided above.

[0042] When the vehicle undergoes a frontal collision, the airbag 32 inflated by the ejected gas from the inflator 31 pushes up the seat cushion pad S11 from its front end side over a predetermined region near the center, suppressing the forward movement of the occupant sitting on the seat cushion S1. At this time, when the occupant's buttocks or thighs are strongly pressed against the seat cushion pad S11 pushed up by the inflation of the airbag 32 and a pressure equal to or greater than a predetermined value is applied to the shock absorbing member 20 arranged below the seat cushion pad S11 and the airbag 32, the shock absorbing member 20 plastically deforms so as to be crushed and the shock is absorbed. In this way, the load applied to the occupant during a frontal collision is reduced.

[0043] In the vehicle seat S of the present embodiment, the airbag module 30 is housed in the storage recess 21 and the support recess 22 formed in the shock absorbing member 20, and the shock absorbing member 20 is configured to be more easily deformed than the pan frame 12 as a support member. In the vehicle seat S configured in this way, since the airbag module 30 is housed in the recess of the shock absorbing member 20, it is possible to suppress an increase in the size of the seat cushion S1 in the vertical direction. Further, since the shock absorbing member 20 is more easily deformed than the pan frame 12 as a support member, the shock absorbing effect is stably exhibited. Furthermore, the airbag module 30 is protected by being housed in the recess, and the assemblability of the airbag module 30 to the shock absorbing member 20 is also improved.

[0044] The storage recess 21 includes a front wall 21a, and by regulating the deployment direction of the airbag 32 by the front wall 21a, it is possible to easily control the forward deployment of the airbag 32. Further, in the storage recess 21, by regulating the deployment direction of the airbag 32 by the rear wall 21b, it is possible to easily control the rearward deployment of the airbag 32. Furthermore, the storage recess 21 includes side walls 21d, and by regulating the deployment direction of the airbag 32 by the side walls 21d, it is possible to easily control the lateral deployment of the airbag 32.

[0045] As shown in FIG. 6, since the shock absorbing member 20 is configured to plastically deform when a load equal to or greater than the deployment load of the airbag 32 is input, the shock absorbency is improved while suppressing the influence on the deployment of the airbag 32.

[0046] The seat cushion pad S11 is covered with a trim cover S12, and the shock absorbing member 20 includes an engagement recess 23a and a side end recess 24a (skin fixing portion) for fixing the ends of the trim cover S12 (trim front end portion S12a and trim side end portion S12b). In such a configuration, since the ends of the trim cover S12 are fixed to the skin fixing portion of the shock absorbing member 20, the degree of setting freedom is improved and the assemblability is improved.

[0047] In addition, a latching member F (skin attachment portion) that is attached to the engagement recess 23a is provided at the trim front end portion S12a of the trim cover S12, and a latching member F (skin attachment portion) that is attached to the side end recess 24a is provided at the trim side end portion S12b of the trim cover S12. The latching member F is configured to come off from the engagement recess 23a and the side end recess 24a when the airbag 32 is deployed (FIG. 6). More specifically, when the airbag 32 is deployed, the shock absorbing member 20 bends and collapses, causing the trim cover S12 to rotate in a direction of coming off (specifically, outward in the seat width direction and upward in the seat vertical direction). With such a configuration, the influence on the deployment of the airbag 32 is suppressed, and the degree of freedom in setting during the deployment of the airbag 32 is improved.

[0048] At the shock absorbing member 20, a receiving recess 23b is provided at the front end as a frame attachment portion for attaching to the pan frame 12 that constitutes the seat cushion frame F1, and a side end recess 24a is provided at the side end. With such a configuration, since the shock absorbing member 20 is fixed so as to have a predetermined positional relationship with respect to the seat cushion frame F1, the positioning of the shock absorbing member 20 in the seat cushion S1 becomes easy and the assemblability is improved.

[0049] The shape and positional relationship of the shock absorbing member 20 are not limited. For example, as shown in FIG. 7, the support recess 22 may be inclined rearward, and a part of the upper surface of the shock absorbing member 20 may be housed in a pad recess S11b formed on the lower surface S11a of the seat cushion pad S11. With such a configuration, since the shock absorbing member 20 is housed in the pad recess S11b, the application of a compressive load to the seat cushion pad S11 is suppressed, and the assemblability of the shock absorbing member 20 with respect to the seat cushion pad S11 is improved. Furthermore, by arranging the airbag 32 on the inclined surface of the shock absorbing member 20, it becomes possible to suppress the forward movement of the occupant during a frontal collision.

[0050] Further, the shock absorbing member 20 is provided adjacent to the submarine pipe 14 as a subsidence suppressing member that suppresses the subsidence of the seated person (FIG. 7), facilitating the positioning of the shock absorbing member 20 and improving the assemblability. At this time, since the shock absorbing member 20 is disposed directly above the submarine pipe 14 extending in the seat width direction, the load during shock absorption is appropriately transmitted from the shock absorbing member 20 to the submarine pipe 14.

[0051] [3. Vehicle Seat of Second Embodiment] With reference to FIGS. 8 to 11, the configuration of the vehicle seat S according to the second embodiment of the present invention will be described. In the following description, the points common to the first embodiment will be omitted, and the description will focus on the different points. As the vehicle seat according to the second embodiment, a rear seat for a vehicle mounted on a vehicle will be described as an example, but it is not limited to the rear seat for a vehicle mounted on a ground vehicle having wheels such as an automobile or a railway, and may be a front seat for a vehicle, a second row seat of a three-row seat, or a seat mounted on an aircraft or a ship that moves other than on the ground.

[0052] As shown in FIGS. 8 and 9, the shock absorbing member 20 is disposed between the pair of side frames 11 in the seat width direction, avoiding each suspension portion T1 to T3 of the trim cover S12. Specifically, in a top view of the seat cushion S1, the shock absorbing member 20 is disposed between the first suspension portion T1 (right suspension portion) and the second suspension portion T2 (left suspension portion) in the seat width direction, and is disposed forward of the third suspension portion T3 (rear suspension portion) in the seat front-rear direction. According to such a configuration, when the load during shock absorption is transmitted to the shock absorbing member 20, the influence of each suspension portion T1 to T3 is suppressed.

[0053] The lower surface 122 of the shock-absorbing member 120 is supported by the seat cushion frame F1 or the vehicle body floor (support member) from below in a planar manner. The support member for supporting the shock-absorbing member 120 is not particularly limited, and examples thereof include frame members such as the pan frame 12 and pressure-receiving members such as the seat spring 15.

[0054] As shown in FIG. 10, a first recess 123 is provided as a storage recess between the upper surface 121 and the lower surface 122 of the shock-absorbing member 120. An inclined surface 121a that slopes downward as it extends rearward is formed on the upper surface 121 of the shock-absorbing member 120. A second recess 124 that depresses downward is formed in the inclined surface 121a. In the example shown in FIG. 10, the second recess 124 is provided as two cylindrical recesses spaced apart in the seat width direction.

[0055] The first recess 123 depresses downward from the upper surface 121 and includes a front wall 123a and a rear wall 123b that extend in the vertical direction and the seat width direction, a bottom wall 123c that extends in the front-rear direction and the seat width direction, and a pair of side walls 123d spaced apart in the seat width direction. The side walls 123d extend in the front-rear direction and the vertical direction.

[0056] The number and shape of the second recess 124 are not limited to the example shown in FIG. 10. For example, as shown in FIG. 11, the second recess 124 may be provided as a recess having an oval-shaped bottom surface that extends in the seat width direction.

[0057] An inflator 31 is housed in the first recess 123 so as to extend in the seat width direction, and an airbag module 30 is housed. A part of the upper surface 121 of the shock-absorbing member 120 is housed in a pad recess S11b formed on the lower surface S11a of the seat cushion pad S11. At this time, when the airbag 32 is disposed on the inclined surface 121a of the shock-absorbing member 120, it is possible to suppress the forward movement of the occupant during a frontal collision, which is preferable.

[0058] [4. Modification Example] The present invention is not limited to the above-described embodiments. In the following, with reference to FIGS. 12 and 13, modified examples of the shock-absorbing member and the seat cushion according to the present embodiment will be described. In the following description, the points common to the above-described embodiments will be omitted, and the description will focus on the different points.

[0059] FIG. 12 is a schematic cross-sectional view of a shock-absorbing member 220 according to a modified example, and FIG. 13 is a schematic cross-sectional view showing the positional relationship between the shock-absorbing member 220, the seat cushion pad S11, and the seat cushion frame F1.

[0060] The shock-absorbing member 220 is a blow-molded product made of resin, and by appropriately setting its outer shape, the number and arrangement of recesses (hollow portions), it is possible to adjust the load value when it is crushed and absorbs shock.

[0061] As shown in FIG. 12, the shock-absorbing member 220 includes a first recess 223a and a second recess 223b provided such that the upper surface 221 is an opening, and a third recess 224a and a fourth recess 224b provided such that the lower surface 222 is an opening. Here, the first recess 223a, the second recess 223b, the third recess 224a, and the fourth recess 224b have a shape with rounded corners.

[0062] Similar to the shock-absorbing member 120 in FIG. 10, the shock-absorbing member 220 is disposed between a pair of side frames 11 in the seat width direction. That is, the first recess 223a and the third recess 224a are provided at the front position of the occupant's seating portion.

[0063] As shown in FIG. 13, the lower surface 222 of the shock-absorbing member 220 is supported by a surface from the seat cushion frame F1 and the vehicle body floor (support member) from below. An airbag module 30 is housed in the first recess 223a and the third recess 224a such that an inflator 31 extends in the seat width direction. And a part of the upper surface 221 of the shock-absorbing member 220 is housed in a pad recess S11b formed in the lower surface S11a of the seat cushion pad S11.

[0064] As described above, the vehicle seat according to the present embodiment has been described by taking the vehicle seat as an example. The seat cushion according to the present embodiment is not particularly limited in terms of use as long as it is a seat cushion of a seat where an impact may occur to the seated person, particularly a seat cushion of a seat where sinking may occur to the waist of the seated person when an impact occurs. For example, the seat cushion of the present invention can also be used as a seat cushion of a vehicle seat used inside a vehicle other than a car.

Explanation of Signs

[0065] S Vehicle seat (vehicle seat) S1 Seat cushion S11 Seat cushion pad S11a Bottom surface S11b Pad recess S12 Trim cover (skin member) S12a Trim front end S12b Trim side end F Latching member (skin attachment part) T1 First hanging part (right hanging part) T2 Second hanging part (left hanging part) T3 Third hanging part (rear hanging part) S2 Seat back S3 Headrest F Seat frame F1 Seat cushion frame F2 Seat back frame 11 Side frame 12 Pan frame (support member) 12a Frame front end 12b Frame side end 13 Connecting pipe 14 Submarine pipe (sinking suppression member) 15 Seat spring (pressure receiving member, wire member) 20 Impact absorbing member 21 Storage recess 21a Front wall 21b Rear wall 21c Bottom surface 21d Side wall 22 Support recess 23 Front end 23a Engaging recess (skin fixing part) 23b Receiving recess (frame mounting part) 24 Side end 24a Side end recess (skin fixing part, frame mounting part) 30 Airbag module 31 Inflator 31a Bolt 31b Nut 32 Airbag 120 Impact absorbing member 121 Upper surface 121a Inclined surface 122 Lower surface 123 First recess 123a Front face 123b Rear face 123c Bottom surface 123d Side face 124 Second recess 220 Impact absorbing member 221 Upper surface 222 Lower surface 223a First recess 223b Second recess 224a Third recess 224b Fourth recess

Claims

1. A vehicle seat having a seat cushion, The seat cushion includes a seat cushion frame and a seat cushion pad placed on the seat cushion frame; an impact absorbing member provided below the seat cushion pad, having a hollow portion therein, and configured to collapse when a certain load value is exceeded to absorb impact; an inflator of an airbag module housed in a housing recess formed so as to be recessed from the surface of the impact absorbing member.

2. A sinking suppression member that suppresses sinking of a seated person, 2. The vehicle seat according to claim 1, wherein the sinking suppression member is disposed below the inflator.

3. The impact absorbing member has a rear region located rearward of the storage recess and a front region located forward of the storage recess, 2. The vehicle seat according to claim 1, wherein the maximum thickness in the front region is greater than the maximum thickness in the rear region in the vertical direction.

4. the storage recess for the impact absorbing member has a side wall in a width direction of the vehicle seat, 2. The vehicle seat according to claim 1, wherein an upper end of the side wall is positioned higher than the inflator.

5. A vehicle seat as described in Claim 2, characterized in that the portion of the impact absorbing member having the greatest thickness in the rear region rearward of the storage recess overlaps with the sinking suppression member in the vertical direction.

6. The impact absorbing member is supported from below by a support member, a front end of the impact absorbing member is disposed forward of a front end of the support member, 2. The vehicle seat according to claim 1, wherein a rear end of the impact absorbing member is disposed rearward of a rear end of the support member.

7. A vehicle seat as described in Claim 6, characterized in that the airbag module is fastened together with the impact absorbing member and the support member to be fixed.

8. A vehicle seat as described in Claim 6, characterized in that the front end of the support member is received in a receiving recess formed on the back surface of the impact absorbing member.

9. A vehicle seat as described in Claim 8, characterized in that the bottom surface of the receiving recess is positioned above the upper end of the inflator.

10. A vehicle seat as described in Claim 4, characterized in that the maximum thickness of the inflator in the vertical direction is smaller than the maximum thickness of the side wall in the vertical direction.

Images