JP4438564B2 - Vehicle seat with variable seat cushion length - Google Patents

Description

  The present invention relates to a vehicle seat that can variably adjust the length of a seat cushion by deforming a front end portion of the seat cushion. In particular, in order to deform the front end portion of the seat cushion, a slide member that moves back and forth with respect to the frame of the seat cushion, and a front end holding member that is provided on the slide member and holds the front side end portion of the skin material of the seat cushion, The present invention relates to a vehicle seat having a variable seat cushion length.

The vehicle seat preferably has a configuration in which the length of the seat cushion can be freely adjusted in accordance with the body shape of the occupant. This is because, by sufficiently increasing the length of the seat cushion, the load per contact area between the seat cushion and the occupant can be reduced, thereby reducing the degree of fatigue of the occupant.
Conventionally, as a vehicle seat in which the length of the seat cushion can be freely changed, the vehicle seat described in Patent Document 1 has been known.
According to Patent Document 1, the vehicle seat includes a slide member that moves back and forth with respect to the frame of the seat cushion and a front end holding member that is provided on the slide member in order to deform the front end portion of the seat cushion. Yes. The front end holding member has a roller-shaped winding part. A front end portion of the skin material of the seat cushion is attached to the winding portion, and the skin material is wound up, and at the same time, the front end element of the pad of the seat cushion is wound up. And when lengthening the length of a seat cushion, the skin material wound up by the winding-up part was paid out, and the front-end element of the pad was rotated with the winding-up part.
German Patent Application No. 4114735

However, in the case of this form, by increasing the cushion length, the front end element of the pad rotates away from the other elements, and a gap is formed between the other elements. Therefore, a gap having no pad is formed in a part of the seat cushion, and a portion having a low cushioning property is generated. Further, the front end element of the pad is a rotating element, and is formed thinner than other elements to be wound around the roller, and tends to have a low cushioning property. Therefore, the seat cushion according to Patent Document 1 has poor cushioning properties at the front element portion.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a vehicle seat having a good cushioning property of a front element portion of a seat cushion in a vehicle seat in which the front end portion of the seat cushion is deformed to change the length of the seat cushion. .

In order to solve the above-mentioned problems, the present invention is a vehicle seat having a variable seat cushion length having the configuration as described in each claim.
According to the first aspect of the present invention, it has a slide member that moves back and forth with respect to the frame of the seat cushion, and a front end holding member that is provided on the slide member and holds the front end of the skin material of the seat cushion. ing. The front end holding member is supported so as to be vertically movable with respect to the slide member. And it is always urged | biased upward by the urging | biasing member provided between the slide members.
That is, the front end holding member is a component of the front element portion of the seat cushion. The front end holding member is always urged upward by the urging member.
Therefore, the cushioning property of the front element portion of the seat cushion is improved by the urging member.

Moreover, according to the invention described in claim 1, the front holding member comprises a bracket attached swingably to the slide member, and the winding shaft member attached to the bracket at the upper before the swing center of the bracket, the take-up A winding portion that is rotatably attached to the shaft member and winds the front end portion of the skin material, and a winding biasing portion that biases the winding portion in the winding direction.
Therefore, when shortening the cushion length, the skin material can be wound by the urging force of the winding urging portion. When the cushion length is increased, the skin material can be fed out from the winding portion against the urging force of the winding urging portion. Therefore, the length of the cushion can be adjusted easily and suitably.

Moreover, according to the invention described in claim 1, by moving the slide member forward, unwinding the skin material winding portion against the take-up biasing portion is rotated, biasing the winding biasing portion It is the structure which energizes the said winding part upwards with a member.

According to the invention described in claim 2 , a sinking regulating member that regulates the sinking amount of the skin material is provided below the skin material of the seat cushion between the front end holding member and the front end portion side of the frame. It has been. The sinking restricting member is configured to be stretched between the front end holding member and the front end side of the frame following the movement of the front end holding member.
In other words, when the cushion length is variably adjusted, the size of the gap between the front end holding member and the front end side of the frame changes, but the sinking restricting member is stretched in the gap following the size of the gap. Is done.
Therefore, even when the gap between the front end holding member and the front end portion of the frame becomes large, the sinking restricting member can prevent the skin material from sinking extremely toward the gap. Therefore, the sitting comfort of the seat cushion can be improved.

(Embodiment 1)
The first embodiment will be described with reference to FIGS.
The vehicle seat has a seat cushion 1 shown in FIG. 3 and a seat back (not shown).
The seat cushion 1 includes a right element portion 1a that forms a right portion with respect to the vehicle traveling direction, and a left element portion 1b that forms a left portion. And between these, it has the front element part 1c which comprises the center front side part, and the rear element part 1d which comprises the center rear side part.
The front element portion 1c is configured to be able to extend in the front direction by being deformed as shown in FIG. 4, and thus the cushion length is variable.

As shown in FIG. 1, the seat cushion 1 includes a bone frame portion (11, 14, 41, etc.), a pad 20 attached above the bone frame portion, and a skin material 21 that covers the surface of the pad 20. Yes. The pad 20 is made of a cushioning material made of urethane foam or the like.
As shown in FIG. 2, the bone frame portion includes a fixed side member (10, 11 etc.), a movable side member (40, 41 etc.), and a drive mechanism 8.

The fixed side member is a member fixed to the vehicle, and includes left and right frames 10 and 11, front and rear reinforcing members 12 and 13, and a cushion pan 14.
The left frame 10 extends in the front-rear direction along the left end edge, and the right frame 11 extends in the front-rear direction along the right end edge. The front reinforcing member 12 connects the front end portions of the left and right frames 10 and 11, and the rear reinforcing member 12 connects the rear end portions of the left and right frames 10 and 11.
The cushion pan 14 is plate-shaped and is attached above the left and right frames 10 and 11. The cushion pan 14 is wider than the installation width of the left and right frames 10 and 11, and the front and rear length is substantially the same as that of the frames 10 and 11. Further, the cushion pan 14 has a front central portion recessed rearward in order to secure a space for installing a front end holding member 3 described later. As shown in FIG. 1, a pad 20 is attached above the cushion pan 14.

As shown in FIG. 2, the movable side members (40, 41, etc.) are members that can move in the front-rear direction with respect to the fixed side member. 42, a front end holding member 3, and a shield 43.
The left slide member 40 is attached to the left frame 10 so as to be movable back and forth, and projects forward from the front end portion of the left frame 10. On the other hand, the right slide member 41 is attached to the right frame 11 so as to be movable back and forth, and projects forward from the front end portion of the right frame 11.

The slide members 40 and 41 are provided with long holes 40a and 41a, and the frames 10 and 11 are provided with pins 10a and 11a inserted into the long holes 40a and 41a. Thereby, the slide width of the slide members 40 and 41 is regulated.
The reinforcing member 44 connects the rear end portions of the left and right slide members 40 and 41.
The shaft member 42 connects the front end portions of the left and right slide members 40 and 41. The shaft member 42 is provided with the front end holding member 3.

As shown in FIG. 2, the front end holding member 3 includes a pair of brackets 32, a winding shaft member 31, a winding portion 30, and a pair of winding biasing portions 5.
As shown in FIG. 1, the bracket 32 has an arm portion 32a extending in the vertical direction and a front extending portion 32b extending forward from the upper end portion of the arm portion 32a. The bracket 32 is attached to the shaft member 42 so as to be able to swing in the vertical direction by attaching the lower end of the arm portion 32a to the shaft member 42 so as to be swingable.
A biasing member 7 such as a coil spring is attached between the arm portion 32a and the slide member 41 (40). The bracket 32 is urged by the urging member 7 so as to always swing upward.

A winding shaft member 31 is attached between the front extending portions 32b of the pair of brackets 32 as shown in FIG. A winding part 30 is attached around the axis of the winding shaft member 31.
As shown in FIG. 1, the winding unit 30 is constituted by a half-divided vertically-divided cylindrical roller in which a cylinder is vertically divided. The winder 30 holds the front end of the skin material 21. Therefore, the skin material 21 can be wound around the winding portion 30 by rotating the winding portion 30 around the winding shaft member 31. The front end element of the pad 20 is also wound around the winding portion 30 together with the skin material 21.

A winding urging unit 5 is provided between the winding unit 30 and the bracket 32.
The winding urging portion 5 is, for example, a winding spring, and the winding shaft member 31 is inserted through the winding center portion. One end is hooked on the upper end of the bracket 32, and the other end is hooked on the upper end of the winding unit 30. For this reason, the winding urging unit 5 constantly urges the winding unit 30 in the direction of winding the skin material 21 (counterclockwise in FIG. 1).

  The pad 20 is thin at the front end. And it has the some notch part 20a in the lower surface of the front-end part which became thin. The cut portion 20 a extends in the width direction of the pad 20. And the some notch part 20a is located in a line at predetermined intervals in the front-back direction. Therefore, the front end portion of the pad 20 is thin and has a cut portion 20a, so that the winding is easy.

Further, the seat cushion 1 has a sinking restriction member 6 as shown in FIG.
The sinking restriction member 6 is provided between the front end holding member 3 and the front end portion of the cushion pan 14, in other words, between the front end holding member 3 and the front end portion of the frame 11. The sinking restriction member 6 is configured in a sheet shape or a net shape, and is stretched on the lower surface of the pad 20 (the lower surface of the skin material 21). The width of the sinking restriction member 6 is substantially the same as the width of the front end holding member 3.

The sinking restricting member 6 has a front end edge attached to the winding portion 30 and a rear end edge attached to the front end side of the cushion pan 14 (the front end side of the frame 11).
The cushion pan 14 has a fixed plate 14a that stands up from the front end, and the rear end edge of the sinking restriction member 6 is attached to the upper end of the fixed plate 14a. As shown in FIG. 2, the cushion pan 14 is provided with a plurality of fixed plates 14a at predetermined intervals. And the fixed plate 14a is substantially the same height as the winding part 30, as shown in FIG.

Moreover, since the front end edge is attached to the winding part 30 as shown in FIG. 1, the sinking restriction member 6 can be wound by the winding part 30. In a state where the front end holding member 3 is not moved forward, the front end holding member 3 is stretched between the cushion pan 14 and a surplus portion is wound up by the winding unit 30.
When the front end holding member 3 is moved forward, as shown in FIG. 5, the sinking restriction member 6 is fed out from the winding portion 30 and is stretched between the front end holding member 3 and the cushion pan 14. The

  As shown in FIG. 4, the shield 43 is configured to cover the lower front portion of the front element portion 1c. The left and right ends of the shield 43 are fixed to the distal ends of the slide members 40 and 41 as shown in FIG.

The drive mechanism 8 is a mechanism for moving the movable side member back and forth with respect to the fixed side member as shown in FIG. 2, and includes a motor 80, a drive shaft 81, a pair of gear boxes 82, a pair of lead screws 83, and a pair of It has a nut 84.
The motor 80 rotates the drive shaft 81 using the power of the vehicle battery. The drive shaft 81 extends in the left-right direction, and the left and right ends are inserted into the left and right gear boxes 82.

  The left and right gear boxes 82 are attached to the inner surfaces of the left and right slide members 40 and 41, and convert the shaft rotation of the drive shaft 81 into the shaft rotation of the lead screw 83. The lead screw 83 is screwed into a nut 84 attached to the frames 10 and 11 side. Therefore, the drive mechanism 8 moves the variable side member back and forth with respect to the solid side member by changing the rotation direction of the motor 80.

A state in which the variable side member is moved forward in accordance with FIG. 5 to deform the front end portion of the seat cushion 1 will be described below.
When the slide member 41 is moved forward by the drive mechanism 8, the winding unit 30 moves forward. And the winding part 30 rotates around the winding shaft member 31 by being pulled by the skin material 21, and feeds the skin material 21 and the front end element of the pad 20. Then, the skin material 21 and the pad 20 are extended from the wound state.
At this time, the gap 60 between the front end holding member 3 and the cushion pan 14 is increased. A sinking restriction member 6 is stretched in the gap 60. Therefore, the pad 20 and the skin material 21 are supported from the lower side by the sinking restriction member 6, and are prevented from sinking extremely toward the gap 60.

Next, the state of the front side element portion 1c of the seat cushion 1 when pressure is applied from above according to FIG. 6 will be described.
When pressure from above is applied to the front element portion 1c, the urging member 7 is elastically deformed as shown in FIG. Therefore, the urging member 7 urges the front end holding member 3 upward by elastic force and pushes the pad 20 upward. Therefore, the front element portion 1 c of the seat cushion 1 has a high cushioning property due to the elastic force of the urging member 7. The urging member 7 urges the front end holding member 3 upward regardless of the front and rear positions of the front end holding member 3.

The vehicle seat is configured as described above.
That is, the front end holding member 3 is a constituent member of the front element portion 1c of the seat cushion as shown in FIG. The front end holding member 3 is always urged upward by the urging member 7.
Therefore, the front element portion 1c of the seat cushion 1 is improved in cushioning properties by the biasing member 7.

The front end holding member 3 includes a winding unit 30 that winds up the front end of the skin material 21 and a winding biasing unit 5 that biases the winding unit 30 in the winding direction.
Therefore, when shortening the cushion length, the skin material 21 can be wound by the urging force of the winding urging portion 5 as shown in FIG. When the cushion length is increased, the skin material 21 can be fed out from the winding portion 30 against the urging force of the winding urging portion 5 as shown in FIG. Therefore, the length of the seat cushion 1 can be adjusted easily and suitably.

Further, as shown in FIG. 1, the front end holding member 3 has an arm portion 32a attached to the slide member 41 (40) so as to be swingable in the vertical direction. And it is urged | biased so that it may always rock | fluctuate upward by the urging | biasing member 7 provided between the arm part 32a and the slide member 41 (40).
Therefore, the front end holding member 3 is supported so as to be movable in the vertical direction with a simple structure in which it is swingably attached to the slide member 41 (40). And it is urged | biased upwards by the easy structure of the urging member 7 which urges | biases a rocking | swiveling direction to an upper direction.

When the cushion length is variably adjusted as shown in FIGS. 1 and 5, the size of the gap 60 between the front end holding member 3 and the front end side of the frame 11 changes. It is stretched by the gap 60 following the size of.
Therefore, even when the gap 60 on the front end side of the front end holding member 3 and the frame 11 becomes large, the sinking regulating member 6 can suppress the skin material 21 from sinking extremely toward the gap 60. Therefore, the sitting comfort of the seat cushion 1 can be improved.

  Further, as shown in FIG. 5, a plurality of cut portions 20 a are provided on the lower surface of the pad 20. Therefore, it is easy to wind or stretch the front end portion of the pad 20. Therefore, it is not necessary to separate the front end portion of the pad 20 from other portions, and it can be prevented that the cushioning property of the seat cushion 1 is deteriorated by the separation.

(Embodiment 2)
A second embodiment will be described with reference to FIGS.
The second embodiment is formed in substantially the same manner as the first embodiment. However, the seat cushion according to Embodiment 2 has a front end holding member 9 shown in FIGS. 7 to 9 instead of the front end holding member 3 shown in FIG. Hereinafter, the second embodiment will be described focusing on the differences.

As shown in FIG. 7, the front end holding member 9 includes a support base 93, a bracket 92, a winding shaft member 91, and a winding portion 90.
The support base 93 extends in the width direction, and both left and right end portions are attached to be rotatable with respect to the shaft member 42. A pair of brackets 92 are attached to the support base 93.
The bracket 92 has an arm portion 92a extending upward from the support base 93 and a front extending portion 92b extending forward from the upper end of the arm portion 92a. The arm portion 92a is attached to the shaft member 42 via the support base 93 so as to be swingable.

A winding shaft member 91 is attached between the front end portions of the front extension portions 92b of the pair of brackets 92 so as to be rotatable. A winding portion 90 is attached to the winding shaft member 91.
And the winding part 90 is attached with the front side edge part of a skin material, and the front-end edge of a sinking prevention member similarly to Embodiment 1. FIG.

The shaft member 42 that rotatably supports the front end holding member 9 is non-rotatably attached to the slide member (see FIGS. 2 and 40). The attachment pieces 45 are fixed to the left and right ends of the shaft member 42. Therefore, the shaft member 42 and the mounting piece 45 are configured not to tilt even when the front end holding member 9 swings. An urging member 94 is attached between the tip of the attachment piece 45 and the support base 93.
Therefore, the front end holding member 9 is always urged upward by the urging member 94. When the pressure is received from the upper side, it swings around the shaft member 42 as shown in FIGS. 8 and 9, and is biased by the biasing member 94 so as to swing upward.

(In the form status of the implementation of the reference)
It is described with reference to FIG. 10 to 13 in the form status of implementation of reference.
Shape status of implementation of reference, it has substantially the same form as in the first embodiment. But the seat cushion 1 according to the shape condition of the embodiment of the reference, instead of the bracket 32 shown in FIG. 2, has a bracket 100 shown in FIG. 10. In place of the urging member 7, the shaft member 42, and the winding urging unit 5 illustrated in FIG. 2, the urging member 101, the support member 102, and the winding urging unit 103 illustrated in FIG. 10 are provided. Hereinafter, the center to be described form status of implementation of reference these differences.

The support member 102 has a plate shape as shown in FIG. 10 and is fixed between the slide members 40 and 41. The urging members 101 are attached to the left and right ends of the upper surface of the support member 102.
The urging member 101 has a configuration in which a wire spring is bent three-dimensionally, and integrally includes a lower attachment portion 101a, a resilient portion 101b, and an upper attachment portion 101c.

The lower attachment portion 101a and the upper attachment portion 101c are bent so as to have a sufficient length in both the left-right direction and the front-rear direction, and are stably attached to the support member 102 and the bracket 100.
The elastic portion 101b is configured to extend obliquely upward and rearward from the lower attachment portion 101a, extend from the tip thereof toward the center of the width of the seat cushion 1, and then extend obliquely upward and forward. Accordingly, the projecting portion 101b viewed from the left side has a shape obtained by horizontally inverting the “character shape” as shown in FIG. 11 (commonly known as a fish mouse shape).

The bracket 100 is formed from a metal plate and integrally includes a bottom plate portion 100a and a pair of side plate portions 100b.
The bottom plate portion 100a extends in the width direction of the seat cushion 1, and the upper mounting portion 101c of the urging member 101 is attached to the left and right ends of the lower surface. Therefore, the bracket 100 is supported by the pair of urging members 101 so as to be movable up and down.
The side plate portion 100b is configured to be erected with respect to the bottom plate portion 100a by bending the left and right ends of the bottom plate portion 100a upward. A take-up shaft member 31 is attached between the pair of side plate portions 100b so as to be rotatable.

A winding portion 30 is attached to the winding shaft member 31 so as to be rotatable about the shaft. Between the winding portion 30 and the bottom plate portion 100a, winding is performed to urge the winding portion 30 in the winding direction. A force portion 103 is attached.
The front end holding member 3 includes a bracket 100, a winding shaft member 31, a winding portion 30, and a winding biasing portion 103, and is supported by the biasing member 101 so as to be movable up and down. The front end holding member 3 is constantly urged upward by a pair of urging members 101 as shown in FIG.

A method for increasing the length of the seat cushion 1 and a state in which the seat cushion 1 is lengthened will be described with reference to FIGS.
When the seat cushion 1 is lengthened, the slide member 41 is slid forward relative to the frame 11 from the state shown in FIG. 11, and the front end holding member 3 is moved forward together with the slide member 41 (see FIG. 12). As a result, the winding unit 30 rotates around the winding shaft member 31 against the urging force of the winding urging unit 103 to feed out the pad 20 and the skin material 21 that have been wound around the winding unit 30. .

Thus, the front element portion 1c of the seat cushion 1 extends forward, and the seat cushion 1 becomes longer. At the same time, the sinking restriction member 6 is also fed out from the winding unit 30. Therefore, the sinking restricting member 6 prevents the pad 20 and the skin material 21 from sinking extremely.
When pressure is applied to the front element portion 1c from above with the seat cushion 1 lengthened, the resilient portion 101b of the biasing member 101 is elastically deformed, and the resilient portion 101b attaches the front end holding member 3 upward. To force. Therefore, the cushioning property of the front element portion 1 c is enhanced by the biasing member 101.

Shape status of implementation of the reference as described above is formed.
That is, as shown in FIG. 11, the front end holding member 3 is supported so as to be movable up and down by a biasing member 101 provided between the front end holding member 3 and the slide member 41, and is always biased upward by the biasing member 101. Yes.
Therefore, the trajectory when the front end holding member 3 moves up and down is substantially linear, and the trajectory is shortened. Therefore, the front end holding member 3 is configured to have a small influence on other members when moved up and down. For example, when the front end holding member 3 moves up and down, the winding unit 30 hardly rotates.

  Accordingly, the skin material 21 and the sinking restriction member 6 that have been wound around the winding portion 30 are hardly fed out, and the winding portion 30 can still rotate even when the front end holding member 3 is moved downward. . Therefore, even when further pressure is applied to the front element portion 1c from above in that state, the winding portion 30 can rotate and the sinking restriction member 6 can be fed out. Thereby, it is prevented that the subsidence restricting member 6 is fully extended, and deterioration of the riding comfort of the seat cushion 1 due to the subsidence restricting member 6 being fully extended is suppressed. In this way, the seat cushion 1 is configured to be held in a comfortable state.

  Since the urging member 101 is formed of a wire spring as shown in FIGS. 10 and 13, it has flexibility in the deformation direction. Therefore, the urging member 101 can be smoothly deformed against the pressure and the like from the oblique direction received by the front element portion 1c of the seat cushion 1. Therefore, the urging member 101 can efficiently urge the front end holding member 3 upward to hold the riding comfort of the seat cushion 1 in a good state.

(Other embodiments)
The present invention is not limited to Embodiments 1 and 2, and may be the following embodiments.
(1) That is, the front end holding member according to the first and second embodiments is supported so as to be movable in the vertical direction by being swingably attached to the slide member. However, the front end holding member may be supported by a rail or the like provided between the front end holding member and the slide member so as to be movable in the vertical direction. The biasing member may be provided between the front end holding member and the slide member, and the front end holding member may be biased upward by the biasing member.
(2) Further, the sinking restriction member according to the first and second embodiments is formed in a sheet shape. However, the sinking restricting member may be formed from a wire spring, a spring spring, or the like.
(3) Moreover , it is preferable that the sinking restriction member according to Embodiments 1 and 2 is formed of a cloth spring or a net having predetermined elasticity. This is because the sinking restriction member can be easily stretched.
(4) Further , the front element portion of the seat cushion according to the first and second embodiments is an element constituting the central front portion of the seat cushion. However, the front element portion may take any form constituting the entire front portion of the seat cushion or a part of the front portion.

FIG. 2 is an enlarged partial cross-sectional view from the left side of the seat cushion according to the first embodiment. It is an upper perspective view of the bone frame part concerning Embodiment 1 in the state where the movable side member was moved ahead. FIG. 3 is an upper perspective view of the seat cushion according to the first embodiment. FIG. 3 is an upper perspective view of the seat cushion according to the first embodiment. FIG. 2 is an enlarged partial cross-sectional view from the left side of the seat cushion showing a state in which a movable side member is moved forward in FIG. 1. FIG. 6 is a partially enlarged cross-sectional view from the left side of the seat cushion showing a state in which pressure is received from above in FIG. 5. 5 is a partially enlarged perspective view of a front end holding member according to Embodiment 2. FIG. 6 is a partially enlarged left side view of a front end holding member according to Embodiment 2. FIG. FIG. 9 is a partially enlarged left side view of the front end holding member showing a state in which pressure is received from above in FIG. 8. It is a top perspective view of a bone frame portion according to the shape condition of the reference embodiment in a state of moving the movable member forward. Is a partial cross-sectional enlarged view of the left side of the seat cushion according to the shape condition of implementation of the reference. FIG. 12 is a partial cross-sectional enlarged view from the left side of the seat cushion showing a state where the movable side member is moved forward in FIG. 11. FIG. 13 is an enlarged partial cross-sectional view from the left side of the seat cushion showing a state in which pressure is received from above in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Seat cushion 1c ... Front side element part 3, 9 ... Front end holding member 5,103 ... Winding biasing part 6 ... Depression control member 7, 94, 101 ... Biasing member 8 ... Drive mechanism 10, 11 ... Frame 14 ... Cushion pan 20 ... Pad 21 ... Skin material 30, 90 ... Winding part 31, 91 ... Winding shaft member 32, 92, 100 ... Bracket 32a, 92a ... Arm part 40, 41 ... Slide member 42 ... Shaft member 43 ... shield

Claims (2)

In order to be able to adjust the seat cushion length by deforming the front end portion of the seat cushion, a slide member that moves back and forth with respect to the frame of the seat cushion, and a front end portion of the skin material of the seat cushion that is provided on the slide member A vehicle seat with a variable seat cushion length, the front end holding member holding
The front end holding member is supported so as to be movable up and down with respect to the slide member, and is always urged upward by an urging member provided between the slide member and the front end holding member .
The front end holding member is pivotably attached to the slide member, a winding shaft member attached to the bracket in front and above the swing center of the bracket, and rotatable to the winding shaft member A winding portion that is attached and winds up the front end of the skin material, and a winding biasing portion that biases the winding portion in the winding direction;
By moving the slide member forward, the winding portion rotates against the winding urging portion to feed out the skin material, and the winding urging portion together with the urging member takes up the winding. A seat for a vehicle with a variable seat cushion length, characterized in that the portion is configured to urge upward . The vehicle seat according to claim 1, wherein the seat cushion length is variable.
Between the front end holding member and the front end side of the frame, there is provided a subsidence regulating member that regulates the amount of subsidence of the skin material below the skin material of the seat cushion, and the subsidence regulating member Is configured to be stretched between the front end holding member and the front end side of the frame so as to follow the movement of the front end holding member. .

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