JP5956593B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat, and more particularly, to a vehicle seat that has a followability to the body of an occupant and has an excellent seating feeling.

In general, in a vehicle seat, a seat cushion that supports an occupant's buttocks and thighs is formed by placing a cushion pad on a cushion frame and covering the skin. In such a seat cushion, various proposals have been made to improve the seating feeling of the occupant.
As a technique for improving the seating feeling of the seat cushion, for example, a technique for attenuating vibration transmitted from a vehicle body is known (for example, Patent Document 1).

The seat cushion described in Patent Document 1 includes a substantially rectangular plate-shaped pan frame serving as a skeleton, and a plurality of elastic springs that connect the rear portion of the pan frame in the left-right direction.
The front part of the pan frame is a position that supports the thigh of the occupant to be seated and is formed in a flat plate shape, and the rear part is a position that supports the buttocks of the occupant and includes a recess that is recessed downward. It becomes the composition. The elastic spring is disposed above the recess that supports the occupant's buttocks, and is disposed at a height substantially the same as the front portion of the pan frame.
Therefore, this seat cushion can obtain a good cushion property due to the elastic deformation of the elastic spring and the cushion pad, and can relieve the vibration transmitted from the vehicle body as the vehicle travels.

JP-A-9-117346

However, the seat cushion as in Patent Document 1 is arranged so that the front portion of the pan frame and the elastic spring are on the same horizontal plane, but the front portion of the pan frame and the arrangement of the elastic spring in the front-rear direction There was no particular consideration. For this reason, if the distance between the front portion of the pan frame and the elastic spring is increased, the seated passenger may be uncomfortable.
Accordingly, there has been a demand for a seat cushion that further enhances the seating feeling while maintaining high followability of the elastic spring for the seated occupant.
At the same time, there has been a demand for a vehicle seat that is further reduced in weight and size in consideration of the arrangement of the pan frame and the elastic spring.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a vehicle seat that has high followability to a seated occupant and further improves the seating feeling.
Another object of the present invention is to provide a vehicle seat that is light and compact and has a good seating feeling.

According to the vehicle seat of the present invention, the subject includes a seat cushion having a cushion frame serving as a skeleton, and the cushion frame connects a side frame disposed on the left and right sides and a front portion of the side frame. And an occupant support member that connects the side frames at the rear of the pan frame, and the front-rear distance between the rear end of the pan frame and the front end of the occupant support member is the occupant support before and after between the forward end and the rearward end of the member a distance Ri of less than, of the pan frame, thigh support portion is provided in the region supporting the thigh of the occupant seated, the The thigh support portion is solved by extending to the occupant support member side from the left and right end portions of the pan frame in the front-rear direction .

Thus, the front-rear distance between the rear end portion of the pan frame and the front end portion of the occupant support member is smaller than the front-rear distance between the front end portion and the rear end portion of the occupant support member. The pan frame that supports the thigh of the occupant and the occupant support member that supports the buttocks of the occupant are continuously arranged, and the uncomfortable feeling of the seated occupant can be suppressed.
Further, the stress of the seating load is not concentrated on the occupant support member, and the stress is distributed to the pan frame and the occupant support member, so that the seating feeling can be further improved.
Furthermore, it arrange | positions so that the front-back distance of a pan frame and a passenger | crew support member may become small, and it can make it lightweight and compact.
Further, since the thigh support portion extends toward the occupant support member side from the left and right end portions of the pan frame in the front-rear direction, the thigh support portion supports the occupant's thigh and the occupant's buttocks. The front-rear distance to the occupant support member is reduced. Therefore, the stress of the seating load is not concentrated on the occupant support member, and the stress is distributed to the pan frame and the occupant support member, so that the seating feeling can be further improved.

At this time, the occupant support member includes a first occupant support member disposed on the pan frame side in the front-rear direction, and a second occupant support member disposed rearward of the first occupant support member, The front-rear distance between the rear end of the pan frame and the front end of the first occupant support member is between the rear end of the first occupant support member and the front end of the second occupant support member. It should be smaller than the front-rear distance.
Thus, the front-rear distance between the rear end of the pan frame and the front end of the first occupant support member is between the rear end of the first occupant support member and the front end of the second occupant support member. Therefore, the pan frame, the first occupant support member, and the second occupant support member are continuously arranged, and the pan frame, the first occupant support member, and the second occupant support are configured. Stress is distributed to the member, and the seating feeling can be further improved.

At this time, the first occupant support member may be disposed so as to tilt backward with respect to the horizontal plane.
Thus, when the occupant is seated, the urging force of the occupant support member tilted backward provides high followability to the occupant's buttocks, and the vertical direction of the pan frame and the first occupant support member It is possible to provide a vehicle seat that can suppress deviation and improve the seating feeling.

At this time, the first occupant support member is provided so as to be positioned in front of the sciatic tubercle portion of the occupant to be seated, and the second occupant support member is provided in rear of the sciatic tubercle portion. Good to have been.
Since it is comprised in this way, the sciatic pressure added to the sciatic nodule part of the passenger | crew who sits down can be reduced, and a seating feeling can be made favorable.

At this time, the first occupant support member may have a smaller amount of vertical deflection with respect to a load applied when the occupant is seated than the second occupant support member.
Since it is configured in this manner, when the occupant is seated, the second occupant support member having a large amount of flexure is disposed on the rear portion of the cushion frame to which a large seating load is applied by the occupant's buttocks. It is possible to improve seating feeling by providing high occupant tracking capability.

At this time, the occupant support member has a wave shape that is curved at a predetermined pitch in the front-rear direction, and the pitch of the first occupant support member is preferably larger than the pitch of the second occupant support member.
Since it is configured in this way, the first occupant support member has a smaller amount of vertical deflection than the second occupant support member. Accordingly, the first occupant support member with a small amount of flexure is arranged at a substantially central portion of the cushion frame where a seating load by the occupant's buttocks is small, and the seating feeling can be further improved.

At this time, the said occupant support member consists of an elastic spring, and it is good in the said occupant support member that the diameter of said 1st occupant support member is larger than the diameter of said 2nd occupant support member .
Since it is configured in this manner, the first occupant support member has the smallest amount of vertical deflection. Accordingly, the first occupant support member having the smallest amount of bending is disposed in the substantially central portion of the cushion frame where the seating load by the occupant's buttocks is small, and the seating feeling can be further improved.

According to the invention of claim 1, the front-rear distance between the rear end of the pan frame and the front end of the occupant support member is greater than the front-rear distance between the front end of the occupant support member and the rear end. Therefore, the pan frame that supports the thigh of the occupant and the occupant support member that supports the buttocks of the occupant are continuously arranged, and the uncomfortable feeling of the occupant sitting can be suppressed.
Further, the stress of the seating load is not concentrated on the occupant support member, and the stress is distributed to the pan frame and the occupant support member, so that the seating feeling can be further improved.
Furthermore, it arrange | positions so that the front-back distance of a pan frame and a passenger | crew support member may become small, and it can make it lightweight and compact.
Furthermore, the front-rear distance between the thigh support portion that supports the thigh of the occupant and the occupant support member that supports the buttocks of the occupant is reduced. Therefore, the stress of the seating load is not concentrated on the occupant support member, and the stress is distributed to the pan frame and the occupant support member, so that the seating feeling can be further improved.
According to the invention of claim 2, the front-rear distance between the rear end of the pan frame and the front end of the first occupant support member is the front end of the first occupant support member and the front of the second occupant support member. Since it is smaller than the front-rear distance between the end portions, the pan frame, the first occupant support member, and the second occupant support member are continuously arranged, and the pan frame and the first occupant support member And stress distribution will be carried out to the 2nd crew member support member, and a seating feeling can be improved further.

According to the invention of claim 3, when the occupant is seated, the urging force of the occupant support member tilted backward provides high followability to the occupant's buttocks, and the vertical direction of the pan frame and the first occupant support member It is possible to provide a vehicle seat that can suppress deviation and improve the seating feeling.
According to the fourth aspect of the present invention, it is possible to reduce the sciatic pressure applied to the sciatic nodule portion of the seated occupant and to improve the sitting feeling.
According to the invention of claim 5, when the occupant is seated, the second occupant support member having a large amount of deflection is disposed on the rear side portion of the cushion frame to which a large seating load is applied by the occupant's buttocks. It is possible to improve seating feeling by providing high occupant tracking capability.

According to the invention of claim 6 , the first occupant support member has a smaller amount of vertical deflection than the second occupant support member. Accordingly, the first occupant support member with a small amount of flexure is arranged at a substantially central portion of the cushion frame where a seating load by the occupant's buttocks is small, and the seating feeling can be further improved.
According to the invention of claim 7 , the first passenger support member has the smallest amount of vertical deflection. Accordingly, the first occupant support member having the smallest amount of bending is disposed in the substantially central portion of the cushion frame where the seating load by the occupant's buttocks is small, and the seating feeling can be further improved.

1 is a schematic perspective view of a vehicle seat according to the present invention. It is a schematic perspective view of the cushion frame concerning the present invention. 1 is a schematic plan view of a cushion frame according to the present invention. It is a schematic plan view of the cushion frame which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the position where a passenger | crew seats on the seat cushion which concerns on this invention. It is explanatory drawing which shows the arrangement configuration of the passenger | crew support member which concerns on this invention.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the member, arrangement | positioning, etc. which are demonstrated below do not limit this invention, and can be variously changed in accordance with the meaning of this invention.

The present embodiment includes a pan frame that supports the thigh of the occupant and an occupant support member that supports the buttocks, and the front-rear distance between the pan frame and the occupant support member is shorter than the front-rear width of the occupant support member. The present invention relates to an invention of a vehicle seat.
As shown in FIG. 1, the vehicle seat S of the present embodiment includes a seat back 1, a headrest 2 disposed on the upper surface side of the seat back 1, and a seat cushion 3 disposed on the front side of the seat back 1. It is mainly composed.
The side on which the occupant is seated with respect to the seat back 1 of the vehicle seat S is the front side.

The seat back 1 is a backrest portion that supports the back of the occupant from the rear, and is configured by placing a cushion pad 1a on a seat back frame (not shown) serving as a skeleton and covering with a skin 1b.
The headrest 2 is a head that supports the head of an occupant from the rear, and is configured by placing a cushion pad 2a on a pillar (not shown) serving as a core material and covering with a skin 2b.

  The seat cushion 3 is a seating portion that supports an occupant from below, and is configured such that the cushion pad 3a is placed on the cushion frame 10 that is a skeleton shown in FIG. 2, and is covered with the skin 3b from above the cushion pad. Has been.

  The cushion frame 10 is formed of a substantially rectangular frame serving as a skeleton of the seat cushion 3, and as shown in FIG. 2, left and right side frames 11 disposed at both left and right ends, and rear portions of the side frames 11. Mainly includes a frame connecting member 12 installed, a plate-like pan frame 20 installed on the upper surface of the front portion of each side frame 11, and an occupant support member 40 connecting the approximate center of each side frame 11 in the front-rear direction. It is configured.

The side frame 11 is made of a sheet metal member extending in the front-rear direction, and the left side frame 11 and the right side frame 11 are separated in the left-right direction in a state of being parallel to each other.
A frame connecting member 12 extending in the left-right direction is connected and fixed to the left and right inner side surfaces of the rear portion of the side frame 11.
The frame connecting member 12 is composed of a pipe member having a substantially circular vertical cross section, and is disposed behind the occupant support member 40 and is configured to penetrate substantially the center in the vertical direction of the left and right side frames 11.

The pan frame 20 is made of a substantially rectangular metal frame that supports the thigh of the occupant, and has an upper surface that is substantially flat.
The left and right end portions 21 of the pan frame 20 include a bent portion 22 that is bent downward at the front portion, and a side flange portion 23 that protrudes downward from a substantially central portion to the rear portion.
The bent portion 22 is hooked on the upper surface of the front portion of each side frame 11, and is fixedly joined to be connected.

The rear end portion of the pan frame 20 includes a rear flange portion 24 that protrudes downward from the rear end portion in the left-right direction.
The rear flange portion 24 is formed by extending between the left and right end portions 21 in the left-right direction.
In addition, although the front-end | tip of the back flange part 24 of this embodiment protrudes below, it is not limited to this, For example, it is good also as a shape bent to the front side. If it does in this way, while being able to improve the rigidity of the rear end part of pan frame 20, it becomes the arrangement which controls interference with crew member support member 40.

The center part of the left-right direction of the pan frame 20 includes a convex part 25 that protrudes upward at the front part, and an inclined part 26 that slopes downward from the approximate center toward the rear part.
The convex portion 25 has a substantially U shape and is formed to extend in the left-right direction. Thus, since the convex part 25 is provided in the front part of the pan frame 20, the submarine phenomenon at the time of a vehicle collision can be suppressed, and the position shift at the time of a passenger | crew's seating can be suppressed, and a seating feeling can be improved.

The inclined portion 26 has a substantially rectangular shape, and is formed to extend rearward from the left and right end portions 21 of the pan frame 20 as shown in FIG. Specifically, the rear end portion of the inclined portion 26 extends rearward so as to incline from the left and right sides toward the center.
The inclined portion 26 includes a pair of thigh support portions 27 that support the left and right thigh portions of a seated occupant, and a recessed portion 30 that is recessed downward between the left and right thigh support portions 27.

As shown in FIG. 2, the thigh support portion 27 has a substantially rectangular shape with a flat upper surface, and is disposed so as to tilt backward with respect to the horizontal plane.
As shown in FIG. 3, the thigh support portion 27 is formed to extend rearward from the left and right end portions 21, so that the front-rear distance between the thigh support portion 27 and the occupant support member 40 is reduced. Therefore, the stress of the seating load is not concentrated on the occupant support member 40, but the stress is distributed to the pan frame 20 and the occupant support member 40, and the seating feeling can be further improved.

The concave portion 30 has a substantially rectangular shape, is disposed at a position corresponding to the crotch portion of the seated occupant, and is formed to extend in the front-rear direction.
The concave portion 30 includes an inclined portion 31 and a bottom surface portion 32 provided continuously on the rear side of the inclined portion 31, and the inclined portion 31 is rearward from the front so as to be inclined lower than the thigh support portion 27. The bottom surface portion 32 is formed as a horizontal plane.
The bottom surface portion 32 is provided with a plurality of substantially rectangular hole portions 33 penetrating in the vertical direction, and the hole portions 33 are formed as holes for attaching other members such as a harness.
The shape of the hole 33 is not limited to a substantially rectangular shape, and may be changed as appropriate. One hole 33 may be provided.

Although the recessed part 30 of this embodiment is comprised from the inclination part 31 and the bottom face part 32, if it is equipped with the shape which can relieve the impact given to the crotch part of the seated passenger | crew without being limited to this, it is suitably It can be changed.
For example, the concave portion 30 may be formed in a substantially rectangular shape so as to be a horizontal plane, or a continuous portion of the concave portion 30 and the left and right thigh support portions 27 may be chamfered.
Moreover, the connection part which connects the left and right thigh support parts 27 so that the upper part of the recessed part 30 may be straddled may be provided separately. The rigidity of the rear end portion of the pan frame 20 can be increased by providing the connecting portion separately.

As another embodiment, as shown in FIG. 4, the inclined portion 26 includes a substantially rectangular hole 34 penetrating vertically between the left and right thigh support portions 27, and the rear ends of the left and right thigh support portions 27. You may provide the connection part 35 which connects a part.
The hole 34 is formed in a substantially rectangular shape, but is not limited thereto, and may be formed in a circular shape, an elliptical shape, a polygonal shape, or the like.
By providing the hole 34 between the left and right thigh support portions 27, the impact applied to the crotch portion of the seated occupant can be further reduced, and the pan frame 20 can be reduced in weight.

The connecting portion 35 extends in the left-right direction, is joined to the rear end portion of the thigh support portion 27, and is configured as a member that reinforces the thigh support portion 27.
The connecting portion 35 is provided with a flange portion (not shown) that protrudes downward, and is configured to increase rigidity and suppress interference with the occupant support member 40.
In addition, although the one connection part 35 of this embodiment is provided, multiple may be provided.

As shown in FIG. 5, the occupant support member 40 is an elastic spring that supports an occupant's buttocks seated via a cushion pad 3a, and is formed of a wave-shaped linear member called an S spring or a zigzag spring.
As shown in FIG. 2, a plurality of occupant support members 40 are arranged at a predetermined interval between the pan frame 20 and the frame connecting member 12 and extend so as to be substantially parallel to the left-right direction.
Further, the occupant support member 40 is formed to be bent at a predetermined pitch in the front-rear direction.
In addition, although the passenger | crew support member 40 of this embodiment consists of elastic springs, it is not limited to this, You may use elastic bodies, such as elastic rubber, instead.

The occupant support member 40 includes a first occupant support member 41 disposed on the pan frame 20 side in the front-rear direction and a second occupant support member 42 disposed behind the first occupant support member 41.
The occupant support member 40 is connected to the left and right side frames 11 by hooking the left and right ends to the inner side surfaces of the left and right side frames 11.
Specifically, the inner side surfaces of the left and right side frames 11 are provided with recesses that are recessed inwardly in the left and right sides, and each recess is provided with a through hole that penetrates in the front-rear direction. The occupant support member 40 is connected by inserting both ends of the left and right ends into the through holes and latching them.
As shown in FIG. 3, the left and right end portions of the first occupant support member 41 are connected to the side frame 11, and are extended when the rear end portions of the thigh support portion 27 and the recess 30 are extended to the left and right sides. It is comprised so that it may be located on a line.

As shown in FIG. 3, the thigh support portion 27 and the recessed portion 30 of the pan frame 20 extend rearward from the portion of the left and right end portions 21 that are wrapped with the side frame 11.
Therefore, it can arrange | position so that the part connected with the side frame 11 of the 1st passenger | crew support member 41 may adjoin to the pan frame 20 side.
In other words, the pan frame 20 can be brought close to the first occupant support member 41 while avoiding the portion connected to the side frame 11 of the first occupant support member 41.
Accordingly, the pan frame 20 and the first occupant support member 41 are easily arranged continuously, and the seating feeling can be further improved.
Furthermore, a sufficient installation space for attaching the first occupant support member 41 to the side frame 11 can be secured.

As shown in FIG. 2, the corrugated pitch of the first occupant support member 41 is formed to be larger than the corrugated pitch of the second occupant support member 42. The diameter of the first occupant support member 41 is formed to be larger than the diameter of the second occupant support member 42.
That is, the first occupant support member 41 is configured to have a smaller vertical deflection with respect to the load applied when the occupant is seated than the second occupant support member 42.
Therefore, when the occupant is seated, the first occupant support member with a small amount of flexure is arranged at a substantially central portion of the cushion frame 10 to which a small load is applied among the seating loads by the occupant's buttocks, and the cushion frame 10 to which a large load is applied. The second occupant support member having a large amount of bending is disposed in the rear portion of the vehicle.
Accordingly, by appropriately changing the corrugated pitch or diameter of the first occupant support member 41 and the second occupant support member 42, it is possible to provide a high followability to the seated occupant and further improve the seating feeling. it can.

As shown in FIG. 5, the occupant support member 40 is configured such that the sciatic tubercle portion of the occupant to be seated is disposed between the first occupant support member 41 and the second occupant support member 42. That is, the first occupant support member 41 and the second occupant support member 42 are spaced apart from each other so as not to be disposed at least directly below the sciatic tubercle.
Therefore, it is possible to reduce the sciatic pressure applied to the sciatic nodule portion of the seated occupant and improve the sitting feeling.

Next, the front-rear distance between the front end of the first occupant support member 41 and the rear end of the pan frame 20 is smaller than the front-rear distance of the first occupant support member 41, as shown in FIG. ing.
The front-rear distance between the front end portion of the first occupant support member 41 and the rear end portion of the pan frame 20 is the rear end portion of the first occupant support member 41 and the front end of the second occupant support member 42. It is smaller than the distance between the front and back.
Therefore, when the occupant is seated, the stress of the seating load is not concentrated on the occupant support member 40, but the stress is distributed to the pan frame 20 and the occupant support member 40, and the seating feeling can be further improved.

Next, as shown in FIG. 6, the first occupant support member 41 is disposed so as to be inclined downward from the pan frame 20 side toward the frame connecting member 12 side with respect to the horizontal plane.
Further, the second occupant support member 42 is disposed on a horizontal plane, or is disposed so as to incline upward from the pan frame 20 side toward the frame connecting member 12 side.
Therefore, since the occupant support member 40 easily follows the shape of the occupant's buttocks, the seated occupant can obtain a good fit.
Note that the inclination angle of the first occupant support member 41 and the inclination angle of the second occupant support member 42 are set depending on the buttock shape of an occupant having a general physique, and the first occupant support member 41 is The inclination angle is larger than the second occupant support member 42 with respect to the horizontal plane.

Next, as shown in FIG. 6, the front end portion of the first occupant support member 41 is disposed above the rear end portion of the pan frame 20.
That is, in consideration of the amount of vertical deflection of the cushion pad 3a and the first occupant support member 41 with respect to the load applied when the occupant is seated, when the occupant is seated, the pan frame 12 to the first occupant support member 41 are substantially flat. It is arranged to be on top.
Therefore, it is possible to improve the seating feeling by providing high followability to a seated passenger.

  Further, since the first occupant support member 41 is tilted rearward so that the front end portion is disposed above the rear end portion of the pan frame 20, the rear end portion of the pan frame 20 is the first occupant. It is configured to easily extend to the support member 41 side. Accordingly, the pan frame 20 and the first occupant support member 41 are easily arranged continuously, and the seating feeling can be further improved.

Next, as shown in FIG. 6, the first occupant support member 41 and the second occupant support member 42 are disposed above the upper surface of the frame connecting member 12.
Further, the front end portion of the first occupant support member 41 and the rear end portion of the second occupant support member 42 are respectively higher than the plane formed by the rear end portion of the pan frame and the upper surface of the frame connecting member. Has been placed.
Therefore, the occupant support member 40 is disposed in the vicinity of the buttocks of the occupant seated in the vertical direction, and the followability to the occupant can be further improved through the cushion pad 3a. Further, since the thickness of the cushion pad 3a is reduced, the seat can be reduced in weight and size.

The occupant support member 40 of the present embodiment extends in the left-right direction so as to form a substantially flat surface with respect to the surface in contact with the cushion pad 3a.
As another embodiment, the center portion in the left-right direction of the occupant support member 40 may include a bent portion that is bent in the vertical direction with respect to the surface in contact with the cushion pad 3a and on the opposite side of the cushion pad 3a. .
Since the center portion of the occupant support member 40 is located at a position corresponding to the recessed portion 30 of the pan frame 20, when the occupant is seated, the impact applied to the occupant's crotch portion by the bent portion of the recessed portion 30 and the occupant support member 40 Can be further relaxed. Accordingly, the seating feeling of the occupant can be further improved.

  In each of the above-described embodiments, the front seat of the automobile has been described as a specific example. However, the present invention is not limited to this and can be applied to a middle seat and a rear seat of the automobile.

S Seat 1 for vehicle 1 Seat back 1a, 2a, 3a Cushion pad 1b, 2b, 3b Skin 2 Headrest 3 Seat cushion 10 Cushion frame 11 Side frame 12 Frame connecting member 20 Pan frame 21 Left and right both ends 22 Bent part 23 Side flange part 24 rear flange portion 25 convex portion 26 inclined portion 27 thigh support portion 30 recessed portion 31 inclined portion 32 bottom surface portion 33 hole portion 34 hole portion 35 connecting portion 40 occupant support member 41 first occupant support member 42 second occupant support member

Claims (7)

A seat cushion having a cushion frame as a skeleton is provided.
The cushion frame includes a side frame disposed on the left and right sides, a pan frame that connects a front portion of the side frame, and an occupant support member that connects the side frame behind the pan frame,
Longitudinal distance between the posterior end front end of the passenger supporting member of the pan frame, Ri of less than longitudinal distance between the front end and the rear end of the passenger supporting member,
A thigh support portion is provided in a region of the pan frame that supports a thigh of a seated occupant,
The thigh support portion extends toward the occupant support member from the left and right end portions of the pan frame in the front-rear direction . The occupant support member includes a first occupant support member disposed on the pan frame side in the front-rear direction, and a second occupant support member disposed rearward of the first occupant support member,
The front-rear distance between the rear end of the pan frame and the front end of the first occupant support member is between the rear end of the first occupant support member and the front end of the second occupant support member. The vehicle seat according to claim 1, wherein the vehicle seat is smaller than the front-rear distance.   The vehicle seat according to claim 2, wherein the first occupant support member is disposed so as to tilt backward with respect to a horizontal plane. The first occupant support member is provided so as to be positioned in front of a sciatic tubercle portion of a seated occupant,
The vehicle seat according to claim 2 or 3, wherein the second occupant support member is provided so as to be located rearward of the sciatic tubercle. The first passenger supporting member, than said second passenger supporting member, claims 2 to 4 for a vehicle seat according to any one, characterized in that the amount of deflection of the vertical direction with respect to the load applied during passenger seating is small. The occupant support member has a wave shape that curves at a predetermined pitch in the front-rear direction,
The vehicle seat according to any one of claims 2 to 5 , wherein the pitch of the first occupant support member is larger than the pitch of the second occupant support member. The occupant support member comprises an elastic spring,
The vehicle seat according to any one of claims 2 to 6 , wherein, of the occupant support members, the diameter of the first occupant support member is larger than the diameter of the second occupant support member .

Images