JP7101206B2 - Vehicle seat - Google Patents

Description

The present invention relates to a vehicle seat, and more particularly to a vehicle seat configured by placing a cushion material on a back frame which is a skeleton of a backrest portion and covering it with a skin material.

Conventionally, when the rear surface of a vehicle collides, the upper body of the occupant who tries to move backward due to inertia is sunk into the seat back to bring the occupant's head closer to the headrest and reduce the impact applied to the occupant's neck. A vehicle seat configured in is known (see, for example, Patent Document 1).

In the vehicle seat described in Patent Document 1, the left and right side frames constituting the side portions in the seat width direction, the connecting wire connecting the left and right side frames, and the connecting wire between the left and right side frames are interposed. It is equipped with a plate-shaped thin-walled occupant support member (pressure receiving member) that is attached and supports the load from the occupant as a back frame.
With the occupant support member, the occupant support member moves rearward in the event of a rear collision of the vehicle, so that the occupant's upper body is sunk into the seat back.
Further, in the above-mentioned vehicle seat, a cushion material is placed on the back frame and covered with a skin material, and the cushion material is placed in a predetermined position in the front-rear direction of the seat so as not to overlap with the back frame in the vertical direction. A front groove (skin suspension groove) and a rear groove extending to the surface are formed. The front groove and the back groove of the cushion material make it easier for the cushion material to bend in the event of a rear collision of the vehicle, making it easier for the upper body of the occupant to sink into the seat back.

Japanese Unexamined Patent Publication No. 2013-249066

By the way, in a vehicle seat as in Patent Document 1, although the seat back (cushion material) is configured to easily bend so that the upper body of the occupant sinks into the seat back at the time of a rear collision of the vehicle, it is normally used. In, it was required that the seated occupants were comfortable to sit in.
That is, it has been required to achieve both a good seating feeling (seating feeling) during normal use and a suitable shock absorbing structure during a rear collision.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat having a good seating feeling in normal use and a suitable shock absorbing structure in a rear collision. The purpose is to do.

According to the vehicle seat of the present invention, the subject is a vehicle seat in which a cushion material is placed on a back frame which is a skeleton of a backrest portion and is covered with a skin material. Has left and right side frames extending in the vertical direction, forming side portions in the seat width direction, and on the surface of the cushion material, a skin suspension groove for suspending the terminal of the skin material, and A slit-shaped surface groove that is arranged at a position spaced apart from the skin suspension groove in the sheet width direction and extends in the vertical direction is formed, and the surface groove is laterally left and right in the sheet width direction. It has left and right surface groove side portions that are formed and extend in the vertical direction, and a surface groove upper portion that extends in the sheet width direction so as to connect the upper end portions of the left and right surface groove side portions. The problem is solved by the fact that the surface groove side portion is not connected to the skin suspension groove and is arranged at a position where the side frame and the side frame overlap in the front-rear direction of the seat.
As described above, a slit-shaped surface groove is formed in the cushion material at a position different from the skin suspension groove in the seat width direction, and this surface groove is arranged at a position where the side frame and the seat are overlapped in the front-rear direction. Therefore, it is possible to realize a vehicle seat having a good seating feeling and a shock absorbing structure at the time of a rear collision.
More specifically, in order to obtain a good seating feeling, it is generally desirable to softly catch the occupant at the center part of the seat back in the seat width direction and firmly hold and catch the occupant at the side part of the seat back. With the above configuration, it is possible to have a good seating feeling during normal use, and in the event of a rear collision (when an excessive load is applied from behind), the cushioning material is applied from the outside to the inside in the seat width direction. It can be easily bent.

At this time, it is preferable that the skin suspension groove extends in the seat width direction, and the upper portion of the surface groove is arranged at a position higher than the skin suspension groove extending in the seat width direction .
Further, it is preferable that the surface groove has a substantially inverted U-shape when viewed from the front.
Further, the side frame has a front wall portion that supports the cushion material provided at a position in front of the seat with respect to the side frame, and the surface groove side portion is a flat portion of the front wall portion of the side frame. It is preferable that the cushion is placed at a position where it overlaps with the seat in the front-rear direction.
Further, the back frame has an upper frame connecting the upper end portions of the left and right side frames, and the surface groove side portion is assembled with the side frame and the upper frame to form a closed cross-sectional structure. It is preferable that it is arranged at a position where it overlaps with the part in the front-rear direction of the seat.
Further, it is preferable that the surface groove side portion is arranged at a position where the side frame and the upper frame are overlapped with each other in the front-rear direction of the seat and overlapped with each other in the front-rear direction of the seat.

At this time, when the occupant sits on the vehicle seat, the back surface of the cushion material in which the surface groove is formed is in contact with the front surface of the side frame. It is good to be there.
With the above configuration, it is possible to give a better seating feeling during normal use, and it is possible to make the cushion material more easily bent at the time of a rear collision.

At this time, it is preferable that the surface groove is formed so as to be recessed toward the rear of the seat from the surface of the central portion in the seat width direction in the cushion material.
Further, at least a part of the surface groove extending in the vertical direction is recessed toward the rear of the seat so as to reach the central portion of the cushion material in the front-rear direction of the seat where the surface groove is formed. It is good if it is formed in.
As described above, since the surface groove is formed to a predetermined depth position, the cushion material can be suitably opened easily, and the cushion material can be easily bent at the time of a rear surface collision.

At this time, an insert wire arranged inside the cushion material at a position corresponding to the skin suspension groove and used for hooking the terminal of the skin material is attached, and the surface groove has a seat width. It is preferable that the insert wire is arranged outside the insert wire in the direction.
As described above, since the surface groove is arranged so as to avoid the insert wire having a relatively high rigidity, the cushion material can be suitably bent easily at the time of a rear surface collision.

According to the present invention, it is possible to realize a vehicle seat having a good seating feeling and a shock absorbing structure at the time of a rear collision.
In detail, in order to obtain a good seating feeling, it is generally desirable to softly catch the occupant at the center part of the seat back in the seat width direction and firmly hold and catch the occupant at the side part of the seat back. With the above configuration, it is possible to have a good seating feeling during normal use, and in the event of a rear collision (when an excessive load is applied from behind), the cushioning material is applied from the outside to the inside in the seat width direction. It can be easily bent.
Further, according to the above invention, the cushion material can be easily bent from the outside to the inside in the seat width direction at the time of a rear surface collision.
Further, according to the above invention, the cushion material can be suitably opened easily, and the cushion material can be easily bent at the time of a rear surface collision .

It is external perspective view of the vehicle seat which concerns on this invention. It is a perspective view of the back frame which becomes the skeleton of a seat back. It is a perspective view of the cushion material of a seat back. It is a front view of the cushion material of a seat back. FIG. 4 is a sectional view taken along line VV of FIG. 4, showing the positional relationship between the front surface groove and the back surface groove. FIG. 4 is a sectional view taken along line VI-VI of FIG. FIG. 4 is a cross-sectional view taken along the line VII-VII of FIG.

Hereinafter, embodiments according to the present invention will be described with reference to FIGS. 1 to 7.
The present embodiment is a vehicle seat configured by placing a cushioning material on a back frame and covering it with a skin material, and the back frame constitutes a side portion in the seat width direction and extends in the vertical direction. It has left and right side frames, and on the surface of the cushion material, there is a skin hanging groove for hanging the end of the skin material, and it is arranged outside the skin hanging groove in the seat width direction and extends in the vertical direction. A front surface groove is formed, and a back surface groove is formed on the back surface of the cushioning material, which is arranged between the skin suspension groove and the front surface groove in the seat width direction and extends in the vertical direction, and the front surface groove is a side surface groove. It relates to the invention of a vehicle seat characterized by being arranged at a position where the frame and the seat overlap in the front-rear direction.
The side on which the occupant sits with respect to the seat back of the vehicle seat is the front side of the seat.

As shown in FIG. 1, the vehicle seat S of the present embodiment includes a seat back 1, a seat cushion 2 connected to a lower portion of the seat back 1, and a headrest 3 connected to an upper portion of the seat back 1. , Is mainly composed of.
As shown in FIG. 1, the seat back 1 is a backrest portion that supports the back of the occupant from behind, and the cushion material 20 shown in FIG. 3 is placed on the back frame 10 shown in FIG. 2 which is a skeleton. , It is configured to be covered with the skin material 30.
The seat cushion 2 is a seating portion that supports the occupant from below, and is configured by placing the cushion material 2a on a cushion frame (not shown) which is a skeleton and covering the cushion material 2a with a skin material 2b. ing.
The headrest 3 is a head that supports the occupant's head from behind, and is configured by placing a cushion material 3a on a headrest pillar (not shown) as a core material and covering it with a skin material 3b.

As shown in FIG. 2, the back frame 10 is composed of a substantially rectangular frame-like body, is arranged laterally in the seat width direction, and extends in the vertical direction. The left and right side frames 11 and the left and right side frames 11 An upper frame 12 connecting the upper end portions of the above frame 12, a substantially plate-shaped lower frame 13 connecting the lower end portions of the left and right side frames 11, a connecting wire 14 connecting the upper frame 12 and the lower frame 13, the upper frame 12 and It is mainly composed of a plate-shaped occupant support member 15 which is attached between the lower frames 13 via a connecting wire 14 and supports a load from a seated occupant.

The side frame 11 is a sheet metal member having a substantially U-shaped cross section, and is arranged so as to face each other in the seat width direction.
The upper end portions of the left and right side frames 11 are connected to the upper frame 12 by welding with the upper frame 12 sandwiched between them in the front-rear direction of the seat.
Further, the lower end portions of the left and right side frames 11 are connected to the lower frame 13 by welding.
A pair of headrest guides 16 for supporting headrest pillars (not shown) are attached to the front surface of the central portion of the upper frame 12 in the seat width direction at predetermined intervals in the seat width direction.

The connecting wire 14 is a wire member for supporting the occupant support member 15, and is bridged to the upper frame 12 and the lower frame 13, respectively, and is left and right with the center line in the seat width direction of the back frame 10 as the target axis. They are arranged in pairs so as to be symmetrical.
The left and right connecting wires 14 are attached to the back surface of the occupant support member 15, and extend substantially linearly in the vertical direction. The lower frame extends upward from the upper end portion 14b of the wire and the lower end portion of the wire main body portion 14a, respectively, which extend upward while expanding to the upper frame 12 and are hooked to the hooking holes provided on the bottom surface of the upper frame 12. It is composed of a wire lower portion 14c to be hooked to a hooking portion provided on the front surface of the 13 and a wire lower portion 14c.

The occupant support member 15 is a substantially rectangular plate-shaped member formed of a resin material or the like, and is attached so as to be able to move backward with respect to the upper frame 12 and the lower frame 13.
Further, the occupant support member 15 is arranged at a position closer to the lower frame 13 side than the upper frame 12 side in the vertical direction. Therefore, when the rear surface of the vehicle collides, the upper body portion of the occupant's upper body, particularly the upper body portion on the head side, tends to sink into the seat back 1.

As shown in FIGS. 3 and 4, the cushion material 20 is formed of a resin material such as urethane foam, and the end of the skin material 30 shown in FIG. 1 is suspended on the surface (front surface) of the cushion material 20. The skin suspension groove 21 and the slit-shaped surface groove 23 arranged above the skin suspension groove 21 are formed.
Further, among the cushion materials 20, the back surface of the cushion front portion 20a shown in FIG. 5 arranged on the front side of the seat with respect to the back frame 10 is arranged between the skin suspension groove 21 and the surface groove 23 in the seat width direction. A slit-shaped back surface groove 24 extending in the vertical direction is formed.

The skin suspension groove 21 is a substantially inverted U-shaped groove when viewed from the front, and is formed so as to be recessed toward the rear of the seat with respect to the surface of the cushion material 20.
The skin suspension groove 21 is formed on the surface of the cushion material 20 at a predetermined interval in the seat width direction, and extends in the vertical direction to the left and right suspension groove side portions 21a and the upper ends of the left and right suspension groove side portions 21a. The suspension groove upper portion 21b extending in the seat width direction so as to connect the portions and the left and right suspension groove side portions 21a extending in the seat width direction at the substantially central portion in the vertical direction of the cushion material 20. It is mainly composed of a suspension groove central portion 21c and.

Inside the cushion material 20, at a position corresponding to the skin suspension groove 21 (at a position adjacent to the skin suspension groove 21), as shown in FIG. 4, an insert wire 22 having a substantially circular cross section is provided. It is embedded.
The insert wire 22 is a wire formed of a known metal material or hard resin material, and extends along the skin suspension groove 21. A C-ring having a substantially C-shaped cross section (not shown) provided at the terminal portion of the skin material 30 is hooked to the insert wire 22. With this configuration, the skin material 30 is fixed to the cushion material 20.

As shown in FIGS. 3 and 4, the surface groove 23 is a substantially inverted U-shaped groove when viewed from the front, and is formed to adjust the flexibility and the bending direction of the cushion material 20.
The surface grooves 23 are formed on the surface of the cushion material 20 on the left and right outer sides in the seat width direction with respect to the skin suspension groove 21, and the left and right surface groove side portions 23a extending in the vertical direction and the left and right surface groove side portions 23a. The upper surface groove portion 23b extending in the seat width direction so as to connect the upper end portions of the surface groove, and the lower end portions of the left and right surface groove side portions 23a are continuously inclined inward in the seat width direction and extended downward. It is composed of the left and right surface groove lower portions 23c.

The left and right surface groove side portions 23a extend substantially linearly so as to incline inward in the seat width direction from the lower side to the upper side of the cushion material 20. In other words, it is inclined upward inward in the seat width direction so as to approach the headrest 3. Further, it is arranged in an intermediate portion between the outer end portion of the cushion material 20 and the skin suspension groove 21 in the seat width direction.
The left and right surface groove lower portions 23c extend downward while inclining inward in the seat width direction so as to approach the skin suspension groove 21 (particularly the suspension groove central portion 21c) from the upper side to the lower side of the cushion material 20. There is.
A predetermined space is provided between the lower surface groove portion 23c and the skin suspension groove 21 in order to secure the rigidity of the cushion material 20.

As shown in FIGS. 3 and 4, the back surface groove 24 is a groove formed in order to adjust the flexibility and the bending direction of the cushion material 20 together with the front surface groove 23, and extends linearly in the vertical direction.
The back surface grooves 24 are formed in pairs on the left and right at predetermined intervals in the seat width direction, and extend in the vertical direction so as to line up with the left and right surface groove side portions 23a, respectively.
Further, the left and right back surface grooves 24 are arranged at positions of the skin suspension grooves 21 that overlap the left and right suspension groove side portions 21a in the vertical direction and overlap with the suspension groove upper portion 21b in the seat width direction. It is placed at (equal height position).
A predetermined space is provided between the back surface groove 24 and the skin suspension groove 21 in order to secure the rigidity of the cushion material 20.

As shown in FIGS. 5 to 7, the surface groove 23 (surface groove side portion 23a) is arranged at a position where it overlaps with the side frame 11 in the front-rear direction of the seat, and the back surface of the cushion material 20 is arranged in the seat width direction. It is arranged within the range in contact with the front surface of the side frame 11.
The same applies to the back surface groove 24, and as shown in FIGS. 5 and 6, at least a part of the back surface grooves 24 extending in the vertical direction is arranged so as to overlap the side frame 11 in the front-rear direction of the seat. Moreover, the back surface of the cushion material 20 is arranged within the range in which the back surface of the cushion material 20 is in contact with the front surface of the side frame 11 in the seat width direction.
Therefore, during normal use, the portion of the cushion material 20 (cushion front portion 20a) on which the front surface groove 23 and the back surface groove 24 are formed is suitably supported by the back frame 10 to provide a good seating feeling. be able to.
On the other hand, at the time of a rear surface collision, the portion of the cushion material 20 in which the front surface groove 23 and the back surface groove 24 are formed extends in a bellows shape from the outer front to the inner rear in the seat width direction, and is easily bent. Therefore, the upper body of the occupant can be suitably submerged in the seat back 1.

As shown in FIG. 5, the surface groove 23 is arranged at a position where the side frame 11 and the upper frame 12 are assembled to form a closed cross-sectional structure and overlap with each other in the front-rear direction of the seat.
Further, as shown in FIG. 6, the front surface groove 23 and the back surface groove 24 are arranged at positions where the side frame 11 and the upper frame 12 overlap each other in the front-rear direction of the seat and overlap with each other in the front-rear direction of the seat.
Therefore, at the time of normal use, the portion of the cushion material 20 in which the front surface groove 23 and the back surface groove 24 are formed is suitably supported by the back frame 10, so that a good seating feeling can be obtained.

As shown in FIG. 6, the front surface of the upper frame 12 located at a position corresponding to the front surface groove 23 and the back surface groove 24 extends from the outside in the seat width direction toward the inside while being inclined rearward.
More specifically, the front surface of the upper frame 12 extends from the outside to the inside in the seat width direction in a state of being in contact with the back surface of the cushion material 20 at a position facing the surface groove 23. Then, at a position facing the back surface groove 24, the cushion material 20 extends from the outside to the inside in a state of being separated from the back surface while tilting rearward.
Therefore, at the time of a rear surface collision, the portion of the cushion material 20 in which the front surface groove 23 and the back surface groove 24 are formed tends to extend in a bellows shape from the outer front to the inner rear in the seat width direction, so that the cushion material 20 is easily bent. Can be done.

As shown in FIGS. 4 to 6, the front surface groove 23 (front surface groove side portion 23a) and the back surface groove 24 are arranged at positions where they overlap with the skin suspension groove 21 in the seat width direction (at the same height position). .. More specifically, the skin suspension groove 21 is arranged at a position overlapping the upper portion of the suspension groove side portion 21a and the suspension groove upper portion 21b in the seat width direction.
Therefore, at the time of a rear surface collision, the portion of the cushion material 20 in which the front surface groove 23 and the back surface groove 24 are formed tends to extend in a bellows shape, and can be easily bent.

As shown in FIGS. 5 and 6, the surface groove 23 (surface groove side portion 23a) has a groove depth of the central portion of the front surface of the cushion material 20 that supports the backrest portion of the seated occupant, in other words, the occupant. It is formed so as to reach the rear side of the seat with respect to the portion facing the portion where the support member 15 is arranged.
Further, the surface groove 23 is formed so as to be recessed toward the rear of the seat so as to reach the central portion of the cushion material 20 in the front-rear direction of the seat where the surface groove 23 is formed.
Further, the back surface groove 24 has a groove depth in front of the portion of the back surface of the cushion material 20 that supports the backrest portion of the seated occupant, in other words, the portion facing the portion where the occupant support member 15 is arranged. It is formed to reach the side.
That is, in the cushion material 20, the groove bottom portion of the front surface groove 23 and the groove bottom portion of the back surface groove 24 are formed so as to face each other, and when the horizontal cross sections shown in FIGS. 5 and 6 are viewed from above, the cushion is formed. The horizontal cross section of the material 20 is formed so as to have a zigzag shape.
Therefore, at the time of a rear surface collision, the portion of the cushion material 20 in which the front surface groove 23 and the back surface groove 24 are formed becomes more easily stretched in a bellows shape, and can be easily bent.

As shown in FIGS. 5 and 6, the front surface groove 23 (front surface groove side portion 23a) and the back surface groove 24 are arranged outside the connecting wire 14 in the sheet width direction, and the sheet is located outside the insert wire 22. It is located outside in the width direction.
As described above, since the front surface groove 23 and the back surface groove 24 are arranged so as to avoid the connecting wire 14 and the insert wire 22 having relatively high rigidity, the cushion material 20 is more preferably easily bent at the time of a rear surface collision. Can be done.

<Other embodiments>
In the above embodiment, where the cushion material 20 is formed of a resin material such as urethane foam, as shown in FIG. 3, the inner portion of the surface groove 23 in the seat width direction is the cushion central portion 20c, and the surface groove 23 is formed. It is preferable that the cushion side portion 20d has a higher hardness than the cushion central portion 20c when the outer portion is the cushion side portion 20d.
With the above configuration, the cushion central portion 20c can softly receive the seated occupant, and the cushion side portion 20d can firmly hold and receive the occupant.
In order to form the cushion material 20 so that the hardness is partially different, known techniques such as using different urethane materials can be adopted.

In the above embodiment, as shown in FIGS. 5 to 7, the back surface of the cushion material 20 on which the surface groove 23 (surface groove side portion 23a) is formed is in contact with the front surface of the side frame 11. However, it can be changed without any particular limitation.
That is, when the occupant is seated on the vehicle seat S, it is sufficient that the back surface of the cushion material 20 on which the surface groove 23 is formed is in contact with the surface of the side frame 11, and the occupant is seated. When they are not present, they may not be in contact with each other (close to each other).

In the above embodiment, as shown in FIG. 5, the back surface groove 24 is arranged between the skin suspension groove 21 and the front surface groove 23 in the seat width direction, but it can be changed without particular limitation. , It may be arranged outside the skin suspension groove 21 and the surface groove 23 in the seat width direction.
Even with the above configuration, at the time of a rear surface collision, the cushion material 20 extends in a bellows shape from the outside to the inside in the seat width direction, so that the cushion material 20 can be easily bent.

In the above embodiment, a vehicle seat used in an automobile has been described as a specific example, but the seat is not particularly limited and is used not only as a vehicle seat for trains and buses but also as a vehicle seat for airplanes and ships. be able to.

In the present embodiment, the vehicle seat according to the present invention has been mainly described.
However, the above embodiment is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes an equivalent thereof.
In particular, the arrangement and configuration of the skin suspension groove, the front surface groove, and the back surface groove of the cushion material described in the above-described embodiment are merely examples, and do not limit the present invention.

S Vehicle seat 1 Seat back 2 Seat cushion 2a, 3a Cushion material 2b, 3b Skin material 3 Headrest 10 Back frame 11 Side frame 12 Upper frame 13 Lower frame 14 Connecting wire 14a Wire body 14b Wire upper part 14c Wire lower part 15 Crew support member 16 Headrest guide 20 Cushion material 20a Cushion front part 20b Cushion rear part 20c Cushion center part 20d Cushion side part 21 Skin suspension groove 21a Suspension groove side part 21b Suspension groove upper part 21c Suspension groove center part 22 Insert wire 23 Surface Groove 23a Surface groove Side part 23b Surface groove upper part 23c Surface groove lower part 24 Back surface groove 30 Surface material

Claims (10)

It is a vehicle seat that is constructed by placing a cushion material on the back frame, which is the skeleton of the backrest, and covering it with a skin material.
The back frame constitutes a side portion in the seat width direction, and has left and right side frames extending in the vertical direction.
On the surface of the cushion material, the skin suspension groove for suspending the terminal of the skin material and the skin suspension groove are arranged at positions spaced apart from each other in the seat width direction and extend in the vertical direction. A slit-shaped surface groove and is formed,
The surface grooves are formed on the left and right sides in the seat width direction, and extend in the seat width direction so as to connect the left and right surface groove side portions extending in the vertical direction and the upper end portions of the left and right surface groove side portions. It has an upper portion of the surface groove, and is not connected to the skin suspension groove.
A vehicle seat characterized in that the surface groove side portion is arranged at a position where the side frame and the side frame are overlapped with each other in the front-rear direction of the seat. The skin suspension groove extends in the seat width direction, and is
The vehicle seat according to claim 1, wherein the upper portion of the surface groove is arranged at a position above the skin suspension groove extending in the seat width direction. The vehicle seat according to claim 1 or 2, wherein the surface groove has a substantially inverted U-shape when viewed from the front. The side frame has a front wall portion that supports the cushion material provided at a position in front of the seat with respect to the side frame.
The aspect according to any one of claims 1 to 3, wherein the surface groove side portion is arranged at a position of the side frame so as to overlap the flat portion of the front wall portion in the front-rear direction of the seat. Vehicle seat. The back frame has an upper frame connecting the upper end portions of the left and right side frames.
The first to fourth aspects of the present invention, wherein the surface groove side portion is arranged at a position where the side frame and the upper frame are assembled to form a closed cross-sectional structure so as to overlap with each other in the front-rear direction of the seat. The vehicle seat described in any one of the items. The vehicle seat according to claim 5, wherein the surface groove side portion is arranged at a position where the side frame and the upper frame are overlapped with each other in the front-rear direction of the seat and overlapped with each other in the front-rear direction of the seat. .. When the occupant sits on the vehicle seat, the back surface of the cushion material in which the surface groove is formed in the seat width direction and the surface surface of the side frame are configured to come into contact with each other. The vehicle seat according to any one of claims 1 to 6, which is characterized. The vehicle according to any one of claims 1 to 7 , wherein the surface groove is formed in the cushion material so as to be recessed toward the rear of the seat from the surface of the central portion in the seat width direction. Sheet for. At least a part of the surface groove extending in the vertical direction is formed so as to be recessed toward the rear of the seat so as to reach the central portion of the cushion material in the front-rear direction of the seat where the surface groove is formed. The vehicle seat according to claim 8 , wherein the seat is made of a vehicle. Inside the cushion material, an insert wire arranged at a position corresponding to the skin suspension groove and used for hooking the terminal of the skin material is attached.
The vehicle seat according to any one of claims 1 to 9 , wherein the surface groove is arranged outside the insert wire in the seat width direction.

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