JP6677233B2 - Seat cushion - Google Patents

Description

  The present invention relates to a seat cushion including a cushion material and a skin material covering an outer surface of the cushion material, wherein the skin material forms a seating surface.

In general, a seat cushion includes a cushion material and a skin material covering an outer surface of the cushion material, and the above-described skin material forms a seating surface of an occupant (seat occupant).
In a vehicle seat provided with such a seat cushion, it is required to improve sitting comfort and maintain the body posture of the seated occupant so that fatigue of the seated occupant, for example, fatigue in a continuous seating state is not easily generated. For this reason, it has been practiced to control the elastic force and rigidity of the contact portion of the seat cushion with the seated occupant.

  For example, Patent Literature 1 discloses that a human body centerline is surrounded by a region (below an occupant having a large physique, a region belonging to 20 cm or less on the left and right sides of the human body centerline, and an occupant having an average physique is 15 cm on the left and right sides of the human body centerline). A structure corresponding to a region corresponding to the following region) is defined as a high-rigidity portion and its periphery is defined as a low-rigidity portion.

JP-A-2003-79473

  The present inventors have focused on the ischial tuberculosis as a human body contact site in the seat cushion, and by controlling the characteristics of the seat cushion based on the position of the ischial tubercle, the sitting comfort and the upper body posture maintaining function of the seated occupant are improved. Was found to be possible.

  Accordingly, the present invention provides a seat occupant that supports the lowermost ischial tuberosity of the contact portion with the seat cushion by the elastic force of the cushion material or the tension of the skin material to maintain the body posture of the seated occupant. It is an object of the present invention to provide a seat cushion in which the function is improved, and the other parts follow the body shape of the seated occupant, thereby improving the sitting comfort.

A seat cushion according to the present invention is a seat cushion including a cushion material and a skin material covering an outer surface of the cushion material, wherein the skin material corresponding to a seating portion on which a seated person sits forms a seating surface, The seating surface has a pair of left and right abutment positions where the pair of left and right ischial tuberosities of the seated person abuts, and a non-contact region where the pair of left and right ischial nodes of the seated person does not abut, and the non-contact region. in a region where a substantially symmetrical spaced apart from the pair of abutting position, Zhang force of the upper Symbol skin material is enhanced by the high tension member to other regions, the high tension member, said skin material It is fixed to .
According to the above configuration, among the contact portions of the seated occupant with the seat cushion, around the lowermost ischial tubercle (that is, in the non-contact area where the pair of left and right ischial tubers does not abut), The separated and substantially symmetrical area) is supported almost equally on the left and right by the elastic force of the cushioning material or the tension of the skin material, so that the seated occupant's buttocks are prevented from dropping into the seat cushion, The body posture maintaining function of the seated occupant is improved.
In addition, other parts can be made to follow the body shape of the seated occupant, and the sitting comfort can be improved.

In one embodiment of the present invention, the high tension member is formed of an elastic mesh made of an elastomer.
The above-mentioned elastomer is a general term for an elastic polymer and an elastic polymer, and has basically the same structure as rubber.

According to the above configuration, the high-tensile member made of the elastomeric elastic mesh can be welded and fixed to the skin material, so that seams are not formed, and the appearance of the seat cushion can be improved. Since the elastic mesh is made of elastomer and has high elasticity, it is comfortable to sit on.

In one embodiment of the present invention, the high tension member is formed of a nonwoven fabric.
According to the above configuration, the present invention can be realized at relatively low cost.

Further, a seat cushion according to the present invention is a seat cushion including a cushion material and a skin material covering an outer surface of the cushion material, wherein the skin material forms a seating surface, wherein the seating surface is a seating surface of a seated person. It has a pair of left and right abutment positions where a pair of right and left ischial abutments abut, and a non-contact area where the pair of left and right ischial nodules of the occupant does not abut. In a region that is separated from the position and is substantially symmetric, the tension of the skin material is increased by a high-tension member with respect to the other regions, and the high-tension member is formed of an elastic mesh made of an elastomer.

According to another embodiment of the present invention, the high tensile members are those which are disposed over substantially the entire width in the vehicle width direction at the rear away with the pair of left and right contact position.

  According to the above configuration, the high-tension member extends rearward from the pair of left and right abutment positions to substantially the entire width in the vehicle width direction, and the tension of the skin material is increased over substantially the entire width in the vehicle width direction. Therefore, the pelvis of the seated occupant can be easily maintained in a standing state, and the posture of the seated occupant in an upright (upright, back muscle) state can be promoted.

According to another embodiment of the present invention, the high tension member is one which is arranged so as to extend in the longitudinal direction in the vehicle width direction inside and outside both sides away with the pair of left and right contact position.

According to the above configuration, the high tension member is separated from the contact position and extends in the front-rear direction at both the vehicle width direction inner side and the vehicle width direction outer side. Even at the time, the posture of the seated occupant is stabilized .

In one embodiment of this invention, the high tensile members are those provided on the back surface of the surface material.
According to the above configuration, since the high tension member is not exposed on the outer surface of the skin material, the appearance can be ensured.

  According to the present invention, of the contact portion of the seated occupant with the seat cushion, the periphery of the lowermost ischial tubercle is supported by the elastic force of the cushion material or the tension of the skin material to maintain the body posture of the seated occupant. The function can be improved, and the other parts can be made to follow the body shape of the seated occupant, thereby improving the sitting comfort.

A perspective view of a vehicle seat provided with a seat cushion of the present invention. (A)-(f) is a top view of the seat cushion which shows the formation pattern of a high tension member. FIG. 2A is a sectional view taken along line AA of FIG. Sectional view showing another embodiment of the seat cushion Sectional view showing a seat cushion of a comparative example

  Of the contact part of the seated occupant to the seat cushion, the lower part of the ischial tuberosity is supported by the elastic force of the cushion material or the tension of the skin material to improve the body posture maintaining function of the seated occupant, The other parts are provided with a cushioning material and a skin material covering the outer surface of the cushioning material, for the purpose of following the body shape of the seated occupant and improving the sitting comfort, and the skin material forms a seating surface. In the seat cushion to be formed, the seating surface has a pair of left and right abutment positions where a pair of left and right ischial tuberosities of the seated person abut, and a non-contact area where the pair of left and right ischial tubes of the seated person does not abut. In the non-contact region, a region that is separated from the pair of left and right contact positions and is substantially symmetrical, and at least one of the elastic force of the cushion material and the tension of the skin material is higher than other regions. La It was realized by the configuration of that.

One embodiment of the present invention will be described below in detail with reference to the drawings.
The drawings are perspective views of a vehicle seat provided with a seat cushion, and FIGS. 2A to 2F are plan views of the seat cushion showing a formation pattern of a high-tensile member (however, the high-tensile member is a skin material described later). The area where the high tension member is provided is hatched for convenience of illustration because it is provided on the back surface). FIG. 3 is a sectional view taken along line AA of FIG. 2A.

In FIG. 1, a vehicle seat 10 includes a seat cushion 11 that forms a seating surface of an occupant, a reclining seatback 12 that forms a backrest surface of the occupant, and a headrest that is adjustable in height to hold a head of the occupant. 13 is provided.
The vehicle seat 10 of this embodiment is a bucket seat (same as a separate seat), and is configured to be position-adjustable in the vehicle front-rear direction according to the physique of the occupant.

  That is, the vehicle seat 10 of this embodiment includes a pair of left and right seat slide mechanisms 15, 15 between the seat cushion frame 14 and the floor panel of the vehicle body.

  The seat slide mechanism 15 is fixed to a floor panel of the vehicle body and extends in the front-rear direction of the vehicle, a slider 17 that slides in the lower rail 16, and is disposed between the lower rail 16 and the slider 17. And a plurality of steel balls (not shown) as a slide permitting member that permits sliding along the lower rail 16.

  As shown in FIG. 1, a lower bracket 18 and an upper bracket 19 are connected between a front upper portion of a slider 17 constituting the seat slide mechanism 15 and a corresponding portion of the seat cushion frame 14. A lower bracket 20 and an upper bracket 21 are also connected between a rear upper portion 17 and a corresponding portion of the seat cushion frame 14.

  As shown in FIG. 1, the above-mentioned seat cushion 11 is integrally formed with side support portions 11a, 11a (so-called overhang portions) which protrude upward and extend in the vehicle front-rear direction on both left and right sides thereof. A seat 11b is formed between the portions 11a.

  Similarly, the above-mentioned seat back 12 is integrally formed with side support portions 12a, 12a (so-called overhang portions) protruding forward and extending in the vehicle vertical direction on both left and right sides thereof, and a pair of left and right side support portions 12a, 12a. A backrest part 12b is formed between them.

  As shown in FIG. 3, the above-described seat cushion 11 includes a cushion member 30 that integrally forms a seating portion 11b on the center side in the vehicle width direction and side support portions 11a, 11a on both sides in the vehicle width direction. And a skin material 31 covering the outer surface, and the skin material 31 at a position corresponding to the seat portion 11b forms a seat surface 32.

  As shown in FIGS. 2A and 3, the above-described seating surface 32 includes a pair of left and right abutments to which a pair of left and right ischial tuberosities X1 and X2 (see the phantom line in FIG. 3) of the occupant, that is, the seated occupant, abut. There is a contact position P1, P2 and a non-contact region Y (all regions of the seating surface 32 except the contact positions P1, P2) where the pair of left and right ischial nodules X1, X2 of the seated person do not contact.

  As shown in FIG. 2A, in the above-mentioned non-contact area Y, the left and right contact positions P1 and P2 are separated from each other and substantially symmetrical (the center of the seat cushion 11 in the vehicle width direction extends in the vehicle longitudinal direction). A region Y1 (substantially left-right symmetrical with respect to the front and rear lines) (a region indicated by hatching in FIG. 2A and simply abbreviated as a symmetrical region Y1 hereinafter) is a region Y2 (non-corresponding region). The tension of the skin material 31 is higher than that of the contact area Y except for the area indicated by hatching in FIG. 2A, which is simply abbreviated as other area Y2 below. In other words, the rigidity of the skin material 31 is increased.

  In the embodiment shown in FIG. 2A, the tension of the skin material 31 is increased by first, second, and third high-tension members 41, 42, and 43 described below. Each of the high tension members 41, 42, 43 is formed of an elastic mesh made of an elastomer, and the high tension members 41, 42, 43 are provided on the back surface of the skin material 31. Here, by adopting an elastic mesh made of an elastomer as the above-described high-tensile members 41, 42, and 43, the elastic mesh can be welded and fixed to the back surface of the skin material 31, so that the sewing thread for attaching the high-tensile members is provided. No seam is formed on the skin material 31. In addition, the elastic mesh is made of an elastomer and has high elasticity, so that it is comfortable to sit on.

  As shown in FIG. 2A, the first high-tensile member 41 is disposed over substantially the entire width in the vehicle width direction behind the seating portion 11b separated from the pair of left and right contact positions P1 and P2. Thereby, the pelvis of the seated occupant can be easily maintained in a standing state, and the posture of the seated occupant in the upright state (the state in which the back muscles are raised) is promoted.

  As shown in the figure, the second high tension member 42 is disposed over substantially the entire width in the vehicle width direction at the middle portion in the front-rear direction of the seating portion 11b separated from the pair of left and right abutment positions P1 and P2 forward. Thus, the seated occupant is equally supported from the lower left and right at the base of the thigh, thereby stabilizing the body posture.

  In addition, the third high tension member 43 is provided on the inner and outer sides in the vehicle width direction separated from the pair of left and right abutment positions P1 and P2, from the rear to the front in the front-rear direction to the middle part in the front-rear direction of the seating portion 11b. , So that the posture of the seated occupant can be stabilized even when the vehicle is turning right or left.

  That is, in the first embodiment shown in FIG. 2A, the first, second, and third high tension members 41, 42, and 43 are separated from the pair of right and left contact positions P1 and P2, and the contact is performed. It is formed in a closed loop shape that surrounds the positions P1, P2 separately from the left, right, front and rear. That is, the high tension members 41, 42, 43 are formed so as to surround the ischial tuberosities X1, X2 of the seated occupant. Thereby, the posture of the seated occupant is stabilized.

  As described above, of the contact portion of the seated occupant with the seat cushion 11, the periphery of the lowermost ischial tuberosities X1 and X2, that is, the symmetric region Y1 is substantially equally supported on the left and right by the tension of the skin material 31, Since the reaction force shown by the arrow in FIG. 3 is exerted by the tension to prevent the seated occupant from dropping into the seat cushion 11, the function of maintaining the body posture of the seated occupant is improved (FIG. 3). reference).

In contrast, FIG. 5 shows a comparative example in which there is no portion where the tension of the skin material 31 is increased. In FIG. 5, the same parts as those in FIG. 3 are denoted by the same reference numerals. In the comparative example shown in FIG. 5, since there is no portion where the tension of the skin material 31 is increased around the ischial tuberosities X1 and X2 of the skin material 31, that is, around the abutment positions P1 and P2, the comparative example shown in FIG. As shown by the arrows, the buttocks of the seated occupant fall into the seat cushion 11.
Note that, in FIG. 2, an arrow F indicates the front of the vehicle.

As described above, the seat cushion of the first embodiment shown in FIGS. 1, 2A, and 3 includes the cushion member 30 and the skin member 31 that covers the outer surface of the cushion member 30. The material 31 is a seat cushion forming a seating surface 32. The seating surface 32 includes a pair of left and right abutment positions P1 and P2 where a pair of left and right ischial nodules X1 and X2 of the occupant abuts. A non-contact area Y in which the pair of ischial nodules X1 and X2 do not abut; a symmetric area Y1 separated from the pair of left and right abutment positions P1 and P2 in the non-abutment area Y; On the other hand, the tension of the skin material 31 is increased (see FIG. 2A and FIG. 3).
According to this configuration, among the contact portions of the seated occupant with the seat cushion 11, around the lowermost ischial tuberosities X1 and X2 (that is, in the non-contact area Y where the pair of left and right ischial tubes X1 and X2 does not contact). The symmetrical region Y1) separated from the pair of left and right contact positions P1 and P2 is substantially equally supported on the left and right sides by the skin material 31 with increased tension so that the seated occupant's buttocks can be dropped into the seat cushion 11. As a result, the function of maintaining the body posture of the seated occupant is improved.
In addition, other parts (see the other area Y2) can follow the body shape of the seated occupant, and can improve sitting comfort.

  In one embodiment of the present invention, the first high-tension member 41 is configured to increase the tension of the skin material 31, and the first high-tension member 41 is separated from the pair of left and right contact positions P1 and P2. The vehicle is arranged over substantially the entire width in the vehicle width direction at the rear (see FIG. 2A).

  According to this configuration, the first high-tension member 41 extends rearwardly from the pair of left and right contact positions P1 and P2 to substantially the entire width in the vehicle width direction, and extends over substantially the entire width in the vehicle width direction. Since the tension of the seated occupant is increased, the pelvis of the seated occupant can be easily maintained in an upright position, and the posture of the seated occupant in the upright state (in a state in which the back muscles are raised) can be promoted.

  Further, in one embodiment of the present invention, the third high-tension member 43 is configured to increase the tension of the skin material 31, and the third high-tension member 43 is separated from the pair of left and right contact positions P1 and P2. It is arranged so as to extend in the front-rear direction on both sides inside and outside the vehicle width direction (see FIG. 2A).

  According to this configuration, since the third high tension member 43 is separated from the contact positions P1 and P2 and extends in the front-rear direction at both the vehicle width direction inside and the vehicle width direction outside, the right turn, The posture of the seated occupant is stable during any cornering of the left turn.

Furthermore, in one embodiment of the present invention, the high tension members 41 and 43 are formed of an elastic mesh made of an elastomer (see FIG. 3).
According to this configuration, the high tension members 41 and 43 made of the elastomeric elastic mesh can be welded and fixed to the skin material 31, so that seams are not formed and the appearance of the seat cushion 11 is improved. In addition, since the elastic mesh is made of an elastomer and has high elasticity, it is comfortable to sit on.

In addition, in one embodiment of the present invention, the high tension members 41 and 43 are provided on the back surface of the skin material 31 (see FIG. 3).
According to this configuration, since the high tension members 41 and 43 are not exposed on the outer surface of the skin material 31, appearance can be ensured.

  In the first embodiment shown in FIG. 3, the high tension member 43 is formed of an elastic mesh made of an elastomer. However, as shown in FIG. 4, the high tension member 43 'may be formed of a nonwoven fabric.

  As described above, when the high tension member 43 'is formed of a nonwoven fabric, the present invention can be realized at a relatively low cost. In the embodiment shown in FIG. 4, the other configurations, operations, and effects are the same as those in the embodiment 1 shown in FIG. 3, and therefore, in FIG. 4, the same parts as those in FIG. And a detailed description thereof will be omitted.

FIG. 2B is a plan view illustrating Example 2 of the seat cushion 11.
In the second embodiment shown in FIG. 2B, a first high tension member 41 is disposed over substantially the entire width in the vehicle width direction behind the seating portion 11b separated from the pair of left and right contact positions P1 and P2. A second high tension member 42 is provided at an intermediate portion in the front-rear direction of the seating portion 11b separated from the pair of left and right contact positions P1 and P2 in the front-rear direction and over substantially the entire width in the vehicle width direction. It is designed to stabilize the upper body posture, especially, to promote the upright posture.

  Even with this configuration, the other configurations, operations, and effects are substantially the same as those of the first embodiment shown in FIG. 2A, and therefore, in FIG. ) Are given the same reference numerals and their detailed description is omitted.

FIG. 2C is a plan view showing Example 3 of the seat cushion 11.
In the third embodiment shown in FIG. 2C, the first high tension member 41 is provided over substantially the entire width in the vehicle width direction behind the seat 11b separated from the pair of left and right contact positions P1 and P2. As a result, the upright posture of the seated occupant is promoted.

  Even with this configuration, the other configurations, operations, and effects are almost the same as those of the second embodiment shown in FIG. 2B, and therefore, in FIG. ) Are given the same reference numerals and their detailed description is omitted.

FIG. 2D is a plan view illustrating Example 4 of the seat cushion 11.
In the fourth embodiment shown in FIG. 2D, a first high tension member 41 is disposed over substantially the entire width in the vehicle width direction behind the seating portion 11b separated from the pair of right and left contact positions P1 and P2. A second high-tension member 42 disposed substantially over the entire width in the vehicle width direction at a front-rear intermediate portion of the seating portion 11b spaced forward from the pair of left and right contact positions P1 and P2, and a pair of left and right contact positions P1 and P2; A pair of left and right third high tension members 43, 43 arranged to extend in the front-rear direction from the rear to the front in the front-rear direction to the middle part in the front-rear direction of the seat portion 11b on the inner and outer sides in the vehicle width direction separated from the vehicle. ing.

  Further, in addition to the first, second, and third high-tensile members 41, 42, and 43, the pair of left and right contact positions P1 are separated from contact positions P1 and P2 where the ischial tuberosities X1 and X2 contact. , P2, a fourth high tension member 44 extending in the vehicle front-rear direction is provided.

  The first high-tension member 41 promotes the upright posture of the seated occupant, the second high-tension member 42 stabilizes the upper body posture of the seated occupant, and the third high-tension member 43 controls the cornering of the vehicle. The posture of the seated occupant is stabilized, and the central portion between the ischial tuberosities X1 and X2 of the seated occupant is supported by the fourth high tension member 44 from below, thereby contributing to maintaining the body posture.

  Even with such a configuration, the other configurations, operations, and effects are the same as those of the first embodiment shown in FIG. 2A, and therefore, in FIG. The same parts as those described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 2E is a plan view showing Example 5 of the seat cushion 11.
In the fifth embodiment shown in FIG. 2E, a first high tension member 41 is disposed over substantially the entire width in the vehicle width direction behind the seat 11b separated from the pair of left and right contact positions P1 and P2. A second high-tension member 42 disposed substantially over the entire width in the vehicle width direction at a front-rear intermediate portion of the seating portion 11b spaced forward from the pair of left and right contact positions P1 and P2, and a pair of left and right contact positions P1 and P2; A pair of left and right fifth high-tensile members 45, 45 arranged so as to extend in the front-rear direction from the rear end to the front end of the seating portion 11b, and the ischial tuberosities X1, X2 are provided on both the inner and outer sides in the vehicle width direction separated from the vehicle. A fourth high tension member 44 is provided between the pair of left and right contact positions P1 and P2, which is spaced apart from the contact positions P1 and P2 to contact and extends in the vehicle front-rear direction.

  The upright posture of the seated occupant is promoted by the first high-tensile member 41 described above, the upper body posture of the seated occupant is stabilized by the second high-tensile member 42, and the ischium of the seated occupant is stabilized by the fourth high-tensile member 44. The central portion between the nodules X1 and X2 is supported from below to maintain its body posture, and the fifth high tension member 45 supports the seated occupant's buttocks right and left or almost the entire thigh from below, and The configuration is such that the posture of the seated occupant during cornering is stabilized.

  Even with this configuration, the other configurations, functions, and effects are the same as those of the fourth embodiment shown in FIG. 2D, and therefore, in FIG. The same parts as those described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 2F is a plan view showing Example 6 of the seat cushion 11.
In the sixth embodiment shown in FIG. 2 (f), the vehicle is separated from the contact positions P1 and P2 where the ischial tuberosities X1 and X2 contact, and is located between the pair of right and left contact positions P1 and P2. The fourth high-tension member 44 extending in the front-rear direction, and extending in the front-rear direction from the rear end to the front end of the seating portion 11b on the inner and outer sides in the vehicle width direction separated from the pair of left and right contact positions P1, P2. A pair of left and right fifth high tension members 45, 45 are provided.

  The above-described fourth high-tensile member 44 supports the central portion between the ischial tuberosities X1 and X2 of the seated occupant from below to maintain the body posture, and the fifth high-tensile member 45 allows the seated occupant's buttocks. The left and right sides or substantially the entire thigh are supported from below to stabilize the posture of the seated occupant during cornering of the vehicle.

  Even with this configuration, the other configurations, operations, and effects are almost the same as those of the fifth embodiment shown in FIG. 2E, and therefore, in FIG. ) Are given the same reference numerals and their detailed description is omitted.

In correspondence between the configuration of the present invention and the above-described embodiment,
The substantially symmetrical area separated from the pair of left and right contact positions of the present invention corresponds to the symmetrical area Y1 of the embodiment,
Similarly,
The other area corresponds to the other area Y2,
The high tension member according to claim 2 corresponds to the first high tension member 41,
The high tension member according to claim 3 corresponds to the third high tension members 43 and 43 ′ and the fifth high tension member 45.
The present invention is not limited only to the configuration of the above embodiment.
For example, in the above-described embodiment, the tension of the skin material 31 is increased by the high tension member. However, instead of this configuration, the elastic force of the cushion material 30 may be increased.

  As described above, the present invention is useful for a seat cushion including a cushion material and a skin material covering the outer surface of the cushion material, wherein the skin material forms a seating surface.

30 cushion material 31 skin material 32 seating surface 41 first high tension member (high tension member)
43, 43 '... third high tension member (high tension member)
45 ... Fifth high tension member (high tension member)
P1, P2 contact position Y non-contact area Y1 symmetric area Y2 other areas

Claims (7)

A seat cushion comprising a cushion material and a skin material covering an outer surface of the cushion material, wherein the skin material corresponding to a seating portion on which a seated person sits forms a seating surface,
The seating surface is a pair of left and right contact positions where a pair of left and right ischial tuberosities of a seated person are in contact,
Having a non-contact area where the pair of left and right ischial tuberosities of the seated person does not touch,
In the non-contact region, the region that is separated from the pair of left and right contact positions and is substantially symmetric is
Zhang force of the upper Symbol skin material is enhanced by the high tension member to other regions,
The high tension member,
A seat cushion fixed to the skin material . The high tension member was formed of an elastic mesh made of an elastomer.
The seat cushion according to claim 1. The high-tensile member is formed of a nonwoven fabric
The seat cushion according to claim 1. A seat cushion comprising a cushion material and a skin material covering an outer surface of the cushion material, wherein the skin material forms a seating surface,
The seating surface is a pair of left and right contact positions where a pair of left and right ischial tuberosities of a seated person are in contact,
Having a non-contact area where the pair of left and right ischial tuberosities of the seated person does not touch,
In the non-contact region, the region that is separated from the pair of left and right contact positions and is substantially symmetric is
The tension of the skin material is increased by a high-tensile member for other areas,
The high tension member,
It is characterized by being formed of an elastic mesh made of elastomer
Seat cushion. The seat cushion according to any one of claims 1 to 4, wherein the high-tension member is disposed over substantially the entire width in the vehicle width direction at a rear side separated from the pair of left and right contact positions. The seat cushion according to any one of claims 1 to 4, wherein the high tension member is arranged to extend in the front-rear direction on both sides inside and outside the vehicle width direction separated from the pair of left and right contact positions. The seat cushion according to any one of claims 1 to 6 , wherein the high tension member is provided on a back surface of the skin material.

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