JP4581883B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat in which a spring member that elastically supports a load received from a seated occupant is stretched in a seating surface direction at least one of a seat cushion and a seat back on which the occupant sits.

  In general, as a seat cushion for a vehicle seat, a plurality of spring members are stretched around a frame-like cushion frame constituting the skeleton, and a cushion pad as a cushion material is provided above the stretched spring member. Arranged configurations are known. For example, Patent Document 1 discloses a technique in which a spring member (S spring) having a shape in which a wire is bent in a wave shape is stretched over a frame-like cushion frame. According to this disclosed technology, the cushion pad disposed on the spring member can be elastically supported to improve the cushion performance of the seat cushion. In the disclosed technology, a compression coil spring is disposed at a lower position of the seating surface on which the occupant of the seat cushion is seated, and the load received from the occupant that cannot be supported by the spring member is elastically supported and supported. Yes.

Japanese Patent No. 3148336

  However, in the above-described conventional technique, that is, in the configuration in which the spring member is disposed to improve the cushion performance of the seat cushion, the spring member is fixedly installed to the cushion frame, for example, the tension state of the spring member is changed. The supporting elasticity could not be adjusted by, for example. Therefore, for example, when an occupant sits on a seat, the cushion performance of the seat cushion cannot be suitably exhibited in accordance with the physique (weight) of the occupant seated.

  The present invention has been devised to solve the above-described problems, and the problem to be solved by the present invention is to be able to adjust the support elasticity supported by the spring member disposed on the seat. It is in.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
First, the first invention is for a vehicle in which a spring member that elastically supports a load load received from a seated occupant is stretched in a seating surface direction on at least one of a seat cushion and a seat back on which the occupant sits. It is a seat, and at least one end of the spring member is supported by a support frame disposed so as to be pivotable with respect to a frame body constituting a seat cushion or a seat back frame, and a cross-sectional shape of the support frame is: The section coefficient relating to the axis parallel to the seating surface is a shape that changes depending on the axis rotation position.
According to the first invention, at least one end of the spring member is connected to the support frame and elastically supported. This support frame changes the section coefficient of its cross-sectional shape according to the axis rotation position with respect to the frame body. Thereby, the support elasticity which supports the spring member of a support frame changes.

Next, according to a second aspect, in the first aspect described above, the support frame is formed as a rectangular shape having a different cross-sectional dimension ratio.
According to the second aspect of the invention, the rate of change in the cross-sectional coefficient of the cross-sectional shape is relatively large with respect to the rate of change in the rotation angle that pivots the support frame relative to the frame body.

Next, according to a third aspect, in the first or second aspect described above, the support frame is integrated with the support frame at a support site portion that supports the spring member, and is integrally formed in the axial rotation direction. A cylindrical connecting bracket is assembled, and the spring member is engaged with the connecting bracket assembled to the support frame.
According to the third aspect of the invention, when the support frame is pivoted with respect to the frame body, the cylindrical connection bracket fitted to the support frame pivots integrally with the support frame. . At this time, the spring member is engaged with the cylindrical surface of the connection bracket, and does not follow and rotate with respect to the above-described shaft rotation. Therefore, the connection position state of the spring member with respect to the connection bracket is maintained constant without being affected by the pivoting of the support frame. Further, even if the spring member is bent and deformed by receiving a load, the support frame is not pivoted in an unintended direction due to the bending deformation.

Next, according to a fourth aspect, in the first to third aspects described above, the support frame is spanned between the frame bodies and supported at both ends.
According to the fourth aspect of the invention, the support state of the support frame is stabilized.

The present invention can obtain the following effects by taking the above-described means.
First, according to the first aspect of the present invention, the support elasticity supported by the spring member disposed on the seat can be adjusted by changing the shaft rotation position of the support frame. Further, the adjustment of the support elasticity is not performed by pulling or compressing the spring member itself, but by changing the posture state of the support end, so that the posture state of the spring member is kept constant. It can be held and is suitable.
Furthermore, according to the second invention, the supporting elasticity supported by the spring member can be adjusted easily and over a wide range.
Furthermore, according to the third aspect of the invention, the connection state between the spring member and the support frame can always be maintained in a constant state. Therefore, the spring member can always be stably supported even when the support elasticity is adjusted by rotating the support frame.
Furthermore, according to the fourth aspect of the invention, since the support state of the support frame is stabilized, the support elasticity can be easily adjusted.

  Embodiments of the best mode for carrying out the present invention will be described below with reference to the drawings.

  1 to 7 show the configuration of the vehicle seat of the first embodiment. 1 is a perspective view showing the internal structure of the vehicle seat, FIG. 2 is a side view showing a state in which the axial rotation position of the leaf spring 13 is adjusted vertically, and FIG. 3 is the axial rotation of the leaf spring 13. 4 is a side view showing a state in which the position is adjusted sideways, FIG. 4 is an enlarged perspective view showing a connection state between the S spring 12 and the leaf spring 13, and FIG. 5 is a connection between the S spring 12 and the leaf spring 13. FIG. 6 is a front view of the connection bracket 14, and FIG. 7 is a side view of the connection bracket 14. 2 and 3, the left direction in the drawing is shown as the front direction of the vehicle, and in FIG. 5, the downward direction in the drawing is shown.

The vehicle seat of the present embodiment is applied as a vehicle front seat. As well shown in FIG. 1, the vehicle seat has a configuration capable of adjusting the cushion performance of a seat cushion 10 on which an occupant is seated.
Specifically, the seat cushion 10 has a plurality of (for example, four) S springs 12 stretched in the front-rear direction of the vehicle with respect to the cushion frame 11 constituting the skeleton thereof. A cushion pad (not shown) is disposed on the upper portion of the stretched S spring 12. With such a configuration, the seat cushion 10 elastically receives a load load received from an occupant seated on the seat cushion 10 by the support elasticity exhibited by the cushion pad 11 supported by the cushion frame 11 and the S spring 12. To support.
Further, the rear end 12b of the S spring 12 is connected to and supported by a long plate spring 13 having flexibility. The leaf spring 13 is flexible enough to bend in the plate thickness direction, and is disposed so as to be pivotable with respect to the cushion frame 11. Thereby, for example, as well shown in FIGS. 2 and 3, the shaft rotation position of the leaf spring 13 relative to the cushion frame 11 can be moved. Then, by changing the axial rotation position of the leaf spring 13 in this way, the posture state of the leaf spring 13 that supports the S spring 12 is changed, so that the support elasticity for supporting the S spring 12 can be changed. .
That is, by changing the axial rotation position of the leaf spring 13, the support elasticity that is comprehensively exhibited in combination with the configuration of the cushion pad, the S spring 12, and the like described above can be changed, and the seat can be adjusted by this position adjustment. The cushion performance of the cushion 10 can be adjusted. Here, the cushion frame 11 corresponds to the frame body of the present invention, the S spring 12 corresponds to the spring member of the present invention, and the leaf spring 13 corresponds to the support frame of the present invention.
Hereinafter, the configuration of each member will be described in detail.

First, the configuration of the cushion frame 11 will be described. That is, as shown in FIG. 1, the cushion frame 11 is hung on a pair of side frames 11a and 11b disposed on both sides of the seat cushion 10 in the vehicle width direction and the front end portions of the side frames 11a and 11b. And a front panel 11c integrally formed in a delivered form. The side frames 11a and 11b and the front panel 11c are formed of a metal plate, and are formed in a reinforcing shape in which the periphery of each part is bent toward the inside in the vehicle width direction. The cushion frame 11 is fixedly installed on a vehicle floor (not shown), for example.
Next, as well shown in FIGS. 1 to 3, the S spring 12 is joined to a portion where the front end 12 a is bent inside the front panel 11 c and the rear end 12 b is assembled to the leaf spring 13. The connecting bracket 14 is engaged. Here, the rear end 12 b of the S spring 12 is formed in a hook shape that can be engaged with the cylindrical connection bracket 14 as well shown in FIG. 4. As a result, the S spring 12 is supported at both ends in a state where the S spring 12 is stretched between the cushion frames 11 in the front-rear direction of the vehicle, as well shown in FIG. Here, the S spring 12 is formed in a shape obtained by bending a long wire into a wave shape, but since it is a general one, detailed description thereof is omitted.

Next, as is well shown in FIGS. 1 and 5, the leaf spring 13 is disposed at a position near the rear end side of the cushion frame 11, and the longitudinal direction thereof is directed in the vehicle width direction. It spans between both side frames 11a and 11b and is supported at both ends. As shown well in FIGS. 2 and 3, the leaf spring 13 has a rectangular cross-sectional shape that supports the S spring 12, and has a flexible structure that can easily bend in the thickness direction. It has become. In other words, the leaf spring 13 is easily bent in the left-right direction in the paper surface at the state position in FIG. 2 and in the up-down direction in the paper surface at the state position in FIG.
As shown well in FIG. 5, the plate spring 13 is provided with cylindrical connectors 16 and 17 at both ends in the longitudinal direction (vehicle width direction), and the cylindrical connector. 16 and 17 are connected and supported by the side frames 11a and 11b. In detail, these couplers 16 and 17 are connected to the side frames 11a and 11b via the bush 15 so as to be pivotable. And the fitting holes 16a and 17a of the cross-sectional oblong hole shape which can insert the edge part of the leaf | plate spring 13 are formed in the cylinder inside of the coupling tools 16 and 17. FIG. Further, an operation lever 18 is formed integrally with the one side connector 16, and the connection tool 16 can be rotated by rotating the operation lever 18. Therefore, by performing the turning operation of the operation lever 18, the coupling tools 16, 17 and the leaf spring 13 can be integrally pivoted. As a result, the leaf spring 13 can be set in, for example, a vertical posture state shown in FIG. 2 or a horizontal posture state shown in FIG. 3 depending on the axial rotation position of the operation lever 18. At this time, as well shown in FIGS. 2 and 3, the leaf spring 13 rotates around the center point of the cross-sectional shape to change the axis rotation position with respect to the cushion frame 11.

As shown well in FIG. 1, cylindrical connection brackets 14 are mounted at two locations in the longitudinal direction of the leaf spring 13. The connecting brackets 14 are respectively engaged with the rear ends 12b of the two S springs 12. Specifically, as shown well in FIG. 4, the outer peripheral surface (cylindrical surface) of the connecting bracket 14 is an engagement surface 14 a for engaging the rear end 12 b of the S spring 12. Furthermore, locking end portions 14b having a shape protruding outward in the radial direction from the engaging surface 14a are formed at portions on both end sides of the connecting bracket 14 in the axial direction. These locking end portions 14b act so as to restrict the rear end 12b of the S spring 12 engaged with the engaging surface 14a from falling off from the engaging surface 14a in the axial direction. Further, as well shown in FIG. 6 and FIG. 7, a through hole having a long hole shape in which a leaf spring 13 (see FIG. 5) can be inserted and penetrated into the cylinder of the connecting bracket 14 in the longitudinal direction. A hole 14c is formed. Therefore, in a state where the connection bracket 14 is assembled to the plate spring 13, the plate spring 13 and the connection bracket 14 are integrally pivoted. Here, the through hole 14 c is formed in an axially symmetric shape passing through the cylindrical axial center position of the connecting bracket 14. Accordingly, the connecting bracket 14 rotates around the cylindrical axis as the leaf spring 13 rotates.
At this time, as well shown in FIG. 4, the rear end 12b of the S spring 12 is in a connected state that is only engaged with the cylindrical engaging surface 14a, so that the connecting bracket 14 pivots. However, it does not follow this axis rotation. That is, the connection bracket 14 rotates idly (relatively rotates) with respect to the rear end 12b of the S spring 12 in the engaged state. Therefore, even if the connecting bracket 14 rotates about the axis, the connecting position of the rear end 12b of the S spring 12 is always on the engaging surface 14a (cylindrical surface) located at a fixed position from the axis of the connecting bracket 14. Maintained. Moreover, since the shape of the engagement surface 14a with which the S spring 12 is engaged is a cylindrical shape, the engagement state between the S spring 12 and the connecting bracket 14 does not change. For this reason, the load applied to the S spring 12 (the load received from the occupant) always acts in the direction of pushing down the connecting bracket 14.

By the way, when the pivoting position of the leaf spring 13 relative to the cushion frame 11 is changed by the pivoting operation of the operation lever 18 (see FIG. 1), the sectional modulus of the sectional shape of the leaf spring 13 with respect to the direction of the load load is applied. Changes. Here, the section modulus is calculated with respect to an axis parallel to the seating surface of the seat cushion 10 (for example, a rotation axis of the leaf spring 13). For example, when the leaf spring 13 is in the vertically oriented state shown in FIG. 2, the section modulus of the support section is maximized, and the leaf spring 13 is difficult to bend. Further, when the leaf spring 13 is in the horizontal posture shown in FIG. 3, the section modulus of the support cross section is in a minimum state, and the leaf spring 13 is easily bent.
That is, by changing the axial rotation position of the leaf spring 13 by turning the operation lever 18 (see FIG. 1), the section coefficient of the support section of the leaf spring 13 (ease of bending with respect to the load load) is adjusted. can do.

Subsequently, a method of using the present embodiment will be described.
That is, first, as well shown in FIG. 1, the rear end 12 b of the S spring 12 is supported in a state where the posture state of the leaf spring 13 is in the vertical direction (see FIG. 2) according to the operation position of the operation lever 18. The section modulus of the leaf spring 13 is relatively high. That is, the rear end 12b of the S spring 12 is supported by the leaf spring 13 that is relatively difficult to bend. Therefore, in this state, even if a load is input from the S spring 12, the plate spring 13 is difficult to bend, and the plate spring 13 exhibits a relatively high support rigidity (low support elasticity).
Next, the operating lever 18 is rotated to change the posture state of the leaf spring 13 to the horizontal direction (see FIG. 3). At this time, even if the connecting bracket 14 pivots as the leaf spring 13 pivots, the engagement position of the rear end 12b of the S spring 12 does not change, and the posture state of the S spring 12 relative to the cushion frame 11 is It remains constant. In this state, the section modulus of the leaf spring 13 that supports the rear end 12b of the S spring 12 is relatively low. That is, the rear end 12b of the S spring 12 is supported by the leaf spring 13 that is relatively easily bent. Therefore, in this state, the leaf spring 13 is bent by the load input from the S spring 12, and relatively high support elasticity is exhibited by the leaf spring 13.
Note that the axial rotation position of the leaf spring 13 is adjusted by appropriately adjusting the axial rotation position between the vertical posture state shown in FIG. 2 and the horizontal posture state shown in FIG. The support elasticity corresponding to can be exhibited. At this time, since the leaf spring 13 has a connection structure in which the S spring 12 is engaged, even if a load is received from the S spring 12, the operation is not performed in an unintended direction due to the action of the load. It is held at the pivot position adjusted by the lever 18.

Thus, according to the vehicle seat of the present embodiment, the S spring 12 and the cushion disposed in the seat cushion 10 are changed by changing the shaft rotation position of the leaf spring 13 by the rotation operation of the operation lever 18. The support elasticity supported by the pad can be adjusted. The adjustment of the support elasticity is not performed by pulling or compressing the S spring 12 itself, but by changing the posture state of the leaf spring 13 that is the support end of the S spring 12. The posture state can be kept constant, which is preferable.
Furthermore, since the leaf spring 13 is formed in a shape in which the rate of change in the section modulus of the support cross section is relatively large with respect to the rate of change in the axial rotation position, the leaf spring 13 is supported by the S spring 12 and the cushion pad. The supported elasticity can be adjusted easily and over a wide range.
Further, since the S spring 12 is connected to the cylindrical surface (engagement surface 14 a) of the connection bracket 14, the S spring 12 with respect to the cushion frame 11 does not depend on the axial rotation position of the leaf spring 13. The posture state can be kept constant.
Furthermore, since the plate spring 13 is supported at both ends by the side frames 11a and 11b of the cushion frame 11, the support state of the plate spring 13 is stabilized and the support elasticity can be easily adjusted.

  Then, the structure of the vehicle seat of Example 2 is demonstrated using FIG.8 and FIG.9. FIG. 8 is a perspective view showing a state in which the axial rotation position of the leaf spring 13 is adjusted in the vertical direction, and FIG. 9 is a side view showing a state in which the axial rotation position of the leaf spring 13 is adjusted in the horizontal direction. . In addition, in a present Example, about the location which show | plays the structure and effect | action similar to the vehicle seat of Example 1, the same code | symbol is attached | subjected, description is abbreviate | omitted, and a different code | symbol is attached | subjected about a different structure in detail. I will explain.

  In the vehicle seat of the present embodiment, as well shown in FIG. 8, a cylindrical connection bracket 14 is attached to the central portion of the leaf spring 13 in the longitudinal direction. The connecting bracket 14 is engaged with the rear ends 22b of the two S springs 22 that are extended together by four S springs 22 (corresponding to the spring members of the present invention). ing.

Subsequently, a method of using the present embodiment will be described.
That is, first, as well shown in FIG. 8, in a state where the posture state of the leaf spring 13 is in the vertical direction, the section modulus of the leaf spring 13 that supports the rear end 22 b of the S spring 22 is relatively high. It has become. Therefore, in this state, even if a load is input from the S spring 22, the plate spring 13 is not easily bent, and the plate spring 13 exhibits a relatively high support rigidity (low support elasticity).
Next, as well shown in FIG. 9, in a state where the posture state of the leaf spring 13 is in the horizontal direction, the section modulus of the leaf spring 13 that supports the rear end 22 b of the S spring 22 is relatively low. ing. Further, the rear end 22 b of the S spring 22 is connected and supported at the center position of the leaf spring 13, that is, the position where the amount of bending deformation is the largest in the deformation form of the leaf spring 13. Therefore, in this state, the leaf spring 13 is bent by the load input from the S spring 22, and relatively high support elasticity is exhibited by the leaf spring 13.

  As described above, according to the vehicle seat of the present embodiment, the S spring 22 is connected and supported by the rear end 22b of the S spring 22 at the position where the amount of bending deformation is the largest due to the deformation form of the leaf spring 13. The support elasticity supported by the cushion pad can be adjusted over a wide range.

  Then, the structure of the vehicle seat of Example 3 is demonstrated using FIG. FIG. 10 is a perspective view showing the internal structure of the vehicle seat. In addition, in a present Example, about the location which show | plays the structure and effect | action similar to the vehicle seat of Example 1, the same code | symbol is attached | subjected, description is abbreviate | omitted, and a different code | symbol is attached | subjected about a different structure in detail. I will explain.

The vehicle seat of the present embodiment has a configuration that can adjust the cushion performance of the seat back 30 as well shown in FIG.
Specifically, the seat back 30 has a plurality of (for example, four) S springs 32 stretched in the vertical direction of the vehicle with respect to the back frame 31 forming the skeleton. A cushion pad (not shown) is disposed at the front portion of the stretched S spring 32. With such a configuration, the seat back 30 elastically supports a load load received from an occupant seated on the seat by the support elasticity exhibited by the cushion pad supported by the back frame 31 and the S spring 32. .
Further, the lower end of the S spring 32 is connected to and supported by a long plate spring 33 having flexibility. The leaf spring 33 is flexible enough to bend in the plate thickness direction, and is disposed so as to be pivotable with respect to the back frame 31. Thereby, the axial rotation position of the leaf spring 33 relative to the back frame 31 can be moved. Then, by changing the axial rotation position of the leaf spring 33 in this way, the posture state of the leaf spring 33 that supports the S spring 32 is changed, so that the support elasticity for supporting the S spring 32 can be changed. . The section modulus of the leaf spring 33 in this embodiment is calculated with respect to an axis parallel to the seating surface of the seat back 30, that is, the backrest surface that supports the back of the occupant (for example, the rotation axis of the leaf spring 33). is there.
Here, the back frame 31 corresponds to the frame body of the present invention, the S spring 32 corresponds to the spring member of the present invention, and the leaf spring 33 corresponds to the support frame of the present invention.
Hereinafter, the configuration of each member will be described in detail.

First, the configuration of the back frame 31 will be described. That is, the back frame 31 is formed integrally with a pair of side frames 31a and 31b disposed on both sides of the seat back 30 in the vehicle width direction and spanned between the upper ends of the side frames 31a and 31b. And an upper frame 31c. These side frames 31a and 31b are formed of a metal plate, and are formed in a reinforcing shape in which the periphery of each part is bent inward in the vehicle width direction. Further, the upper frame 31 is formed in a circular tube shape and is reinforced. The back frame 31 is supported by a reclining shaft 39 so as to be pivotable relative to a cushion frame of a seat cushion (not shown).
Next, the upper end 32 a of the S spring 32 is engaged with the wire spanned over the upper panel 31 c, and the lower end 32 b is engaged with the connection bracket 34 assembled to the leaf spring 33.
The configuration of the leaf spring 33, the coupling bracket 34, the operation lever 38, etc. shown in FIG. 10 is substantially the same as the configuration of the leaf spring 13, the coupling bracket 14, the operation lever 18, etc. shown in the first embodiment. Therefore, detailed description is omitted. Also, the usage method of this embodiment is omitted because it can be used in consideration of the usage method of each configuration shown in the first embodiment.

  Thus, according to the vehicle seat of the present embodiment, the S spring 32 and the cushion disposed in the seat back 30 are changed by changing the shaft rotation position of the leaf spring 33 by the rotation operation of the operation lever 38. The support elasticity supported by the pad can be adjusted. That is, the support elasticity adjusting function applied to the seat cushion 10 shown in the first embodiment can be suitably applied to the seat back 30 as well.

Although the embodiments of the present invention have been described in the three examples, the present invention can be implemented in various forms in addition to the above examples.
For example, a configuration in which an end portion of an S spring (corresponding to a spring member of the present invention) is elastically supported by a leaf spring (corresponding to a support frame of the present invention) is used as a front end of the S spring (Example 1 and Example). You may apply to the connection structure of 2) or an upper end (Example 3).
In addition, the cross-sectional shape of the leaf spring is not limited to the rectangular shape shown in the above-described embodiment, but a shape whose section coefficient changes depending on the axial rotation position of the leaf spring, for example, a cam shape such as a circular arc shape or a cross-sectional H shape It can also be made into a shape with a large aspect ratio such as I or I shape.
Further, the plate spring may be cantilevered with respect to the cushion frame or the back frame.

1 is a perspective view illustrating an internal structure of a vehicle seat according to Embodiment 1. FIG. It is a side view showing the state where the axial rotation position of the leaf spring was adjusted in the vertical direction. It is a side view showing the state where the axial rotation position of the leaf spring was adjusted sideways. It is the perspective view which expanded and represented the connection state of S spring and a leaf | plate spring. It is sectional drawing which represented the connection state of S spring and a leaf | plate spring by planar view. It is a front view of a connection bracket. It is a side view of a connection bracket. It is a perspective view showing the state where the axial rotation position of the leaf | plate spring was adjusted to the vertical direction in the vehicle seat of Example 2. FIG. It is a side view showing the state where the axial rotation position of the leaf spring was adjusted sideways. FIG. 6 is a perspective view illustrating an internal structure of a vehicle seat according to a third embodiment.

Explanation of symbols

10 Seat cushion 11 Cushion frame (frame body)
11a side frame 11b side frame 11c front panel 12 S spring (spring member)
12a front end 12b rear end 13 leaf spring (support frame)
DESCRIPTION OF SYMBOLS 14 Connection bracket 14a Engagement surface 14b Locking end part 14c Through-hole 15 Bush 16 Connection tool 16a Fitting hole 17 Connection tool 17a Fitting hole 18 Operation lever 22 S spring (spring member)
22b Rear end 30 Seat back 31 Back frame (frame body)
31a side frame 31b side frame 31c upper frame 31d wire 32 S spring (spring member)
32a upper end 32b lower end 33 leaf spring (support frame)
34 Connecting bracket 38 Operation lever 39 Reclining shaft

Claims (4)

At least one of the seat cushion on which the occupant sits and the seat back are vehicle seats in which a spring member that elastically supports a load received from the seated occupant is stretched in the seating surface direction,
At least one end of the spring member is supported by a support frame disposed so as to be capable of pivoting with respect to a frame body constituting the skeleton of the seat cushion or the seat back.
The vehicle seat characterized in that the cross-sectional shape of the support frame is a shape in which a cross-sectional coefficient with respect to an axis parallel to the seating surface changes depending on a shaft rotation position. The vehicle seat according to claim 1,
The vehicle seat is characterized in that the support frame is formed as a rectangular shape having a different cross-sectional dimension ratio. The vehicle seat according to claim 1 or 2,
In the support frame, a cylindrical connection bracket that is fitted to the support frame and integrated in the axial rotation direction is assembled to a support site portion that supports the spring member,
The vehicle seat according to claim 1, wherein the spring member is engaged with a connection bracket assembled to the support frame. The vehicle seat according to any one of claims 1 to 3,
The vehicle seat according to claim 1, wherein the support frame is supported between both ends of the frame body.

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