JP5131433B2 - Vehicle seat device - Google Patents

Description

  The present invention relates to a vehicle seat device.

Conventionally, as a vehicular seat device provided with a pair of rail members which can move relatively, what was indicated, for example in patent documents 1 is known. In this apparatus, in order to maintain the orthogonal state of the roller (9a) as a rolling element with respect to the rail traveling direction (longitudinal direction of the rail member), it is proposed to provide a guide member (11) that is fitted to the roller. . This guide member is made to guide the end surfaces (17) on both sides in the axial direction by the wall portions (5b) on both sides in the width direction of the upper rail (5).
JP-A-9-290668

  By the way, in Patent Document 1, in order to maintain the orthogonal state of the roller with respect to the rail traveling direction, the width between both end surfaces of the guide member, the width between both inner wall surfaces of the upper rail, the inner diameter of the guide member, the outer diameter of the roller, etc. It is necessary to match as much as possible and close the gap. For this reason, during operation, the sliding friction resistance between the guide member, the roller, and the upper rail increases. In addition, although two rollers are arranged before and after the rail traveling direction, it may be difficult to keep the distance between both rollers constant.

  An object of the present invention is to suitably maintain the orthogonal state of the rolling elements with respect to the rail traveling direction and to keep the distance between the adjacent rolling elements constant in the rail traveling direction while suppressing an increase in sliding resistance. The object is to provide a vehicle seat device.

In order to solve the above-mentioned problems, the invention according to claim 1 is arranged such that the first rail member, the second rail member, and the first rail member are spaced apart in the longitudinal direction. In the vehicle seat device comprising a plurality of rolling elements that are in contact with the second rail member and support the first and second rail members so as to be relatively movable, each of the rolling elements is provided at both ends of the rotating shaft. A first wire having a formed bearing hole and having a plurality of shaft portions rotatably inserted into all of the bearing holes of any one of the plurality of rolling elements, and any of the plurality of rolling elements A second wire having a plurality of shaft portions that are rotatably inserted into all of the other bearing holes, and the rolling elements provided between the adjacent rolling elements of the plurality of rolling elements. and a holding member for holding the wire, the first record There are two rolling elements disposed at intervals in the longitudinal direction of the cable member, the first wire has a circular cross section, and the plurality of shaft portions are both end portions of the first wire. The second wire has a circular cross section, the plurality of shaft portions are bent at both ends of the second wire, and the holding member is the first and second wires. The first and second wire rods are each formed with a bent portion disposed at an intermediate portion of the two shaft portions, and the plate member is formed of the first and second wire rods. The gist is that the first and second wire rods are prevented from rotating in contact with the bent portion .

According to the same configuration, in the plurality of rolling elements, the plurality of shaft portions of the first wire rod are rotatably inserted into all of the one of the bearing holes, and the other of the bearing holes. A plurality of shaft portions of the second wire rod are rotatably inserted into all, and the first and second wire rods are integrally held by the holding member, so that the rotation shaft with respect to the longitudinal direction of the first rail member It is possible to favorably maintain the orthogonal state of the rotation axis with respect to the direction, that is, the rail traveling direction. Moreover, the distance between the said rolling elements adjacent in a rail advancing direction can be kept constant. Further, since each of the rolling elements is pivotally supported by the shaft portion in the bearing hole having a relatively small diameter, sliding resistance during operation can be reduced. The two (two) shaft portions are simply formed by bending both end portions of the first and second wire rods, and are disposed at intervals in the longitudinal direction of the first rail member. As for the distance between the rolling elements, a suitable accuracy can be ensured according to the accuracy of the distance between the two shaft portions. Furthermore, the assembly can be easily performed by joining the plate material as a holding member to the first and second wire rods sandwiching the rolling elements with the respective shaft portions. The holding member (plate material) abuts on the bent portions of the first and second wire rods and prevents the first and second wire rods from rotating, so that the axial direction of the shaft portion rotates the rolling element. For example, the shaft portion can be prevented from being detached from the bearing hole into which the shaft portion is inserted.

In the first aspect of the present invention, while suppressing an increase in sliding resistance, an orthogonal state of the rotating shaft of the rolling element with respect to the rail traveling direction is suitably maintained, and a distance between adjacent rolling elements in the rail traveling direction is set. A vehicle seat device that can be kept constant can be provided.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 is a side view schematically showing a vehicle seat 1 mounted on the rear seat side of a vehicle such as an automobile to which the present invention is applied. As shown in FIG. 1, the vehicle seat 1 includes a seat cushion 2 that forms a seat seat surface, and a seat back frame that is supported at a rear end portion of the seat cushion 2 so as to be tiltable around a rotation axis O. 3. The seat back frame 3 forms a skeleton of the seat back.

  A lock member 4 is attached to the seat back frame 3. The lock member 4 has a hook shape that is vertically divided into two by a locking groove 4a formed at the rear end. The lock member 4 draws an arcuate locus C as the seat back frame 3 tilts around the rotation axis O.

  On the other hand, a rail member 11 serving as a linear first rail member is attached to the side surface of the vehicle body so as to extend along the tangential direction of the locus C along the tilting locus of the seat back. ing. A slider 12 as a second rail member is slidably mounted on the rail member 11, and a striker 13 is coupled to the slider 12 so as to face the locking groove 4 a of the lock member 4. Yes. These rail member 11, slider 12, striker 13, and the like constitute a striker device 10. In a state in which the movement of the slider 12 with respect to the rail member 11 is restricted, one end of the striker 13 is introduced into the locking groove 4a of the lock member 4 and is incorporated in the lock member 4 (not shown). ), The inclination angle of the seat back (seat back frame 3) is maintained. It goes without saying that the inclination angle can be adjusted by changing the relative position of the slider 12 with respect to the rail member 11.

  Next, the striker device 10 will be further described with reference to FIGS. 2 is a front view showing the striker device 10, and FIGS. 3 and 4 are cross-sectional views taken along lines AA and BB in FIG.

  As shown in FIG. 4, the rail member 11 is made of a plate material, and includes a side wall portion 21 erected from both sides in the width direction and a bottom wall portion 22 that connects the side wall portions 21 to each other. A folded wall portion 23 that is bent inward in the width direction and further folded back to the proximal end side of the sidewall portion 21 is continuously formed at the distal end of each sidewall portion 21. The folded wall portion 23 includes a slope portion 23b in which the tips of the side wall portions 21 are bent in a direction facing each other, and a hanging surface portion 23c in which the tips of the slope portions 23b are bent toward the side wall portion 21. The linear rail member 11 has a U-shaped constant cross section composed of the side wall portion 21, the bottom wall portion 22, and the folded wall portion 23. The rail member 11 is fixed to the side surface of the vehicle body by fastening at the bottom wall portion 22.

  On the other hand, the slider 12 is made of a plate material, and includes a pair of side wall portions 24 erected from both sides in the width direction between the folded wall portions 23 of the rail member 11 and a lid wall portion 25 that connects the side wall portions 24 to each other. Have. The lid wall portion 25 is disposed in parallel with the bottom wall portion 22. Further, the side wall portions 24 are bent inward in the width direction with respect to the lid wall portion 25 so that the front end side is reduced in width. Further, a folded wall portion 26 that is bent outward in the width direction and is folded back so as to be surrounded by the side wall portion 21 and the folded wall portion 23 is continuously formed at the tip of each side wall portion 24. The base end portion of the side wall portion 24 forms a slider-side slope portion 24b that is bent at an acute angle inward in the width direction from both ends of the lid wall portion 25, and the tip end portion of the side wall portion 24 is connected to the folded wall portion 26. A U-shaped surface portion 41 is formed so as to extend integrally so as to surround the hanging lower surface portion 23c in parallel.

That is, the rail member 11 and the slider 12 are prevented from coming off in the vertical direction of the bottom wall portion 22 mainly by engaging with the folded wall portions 23 and 26.
The slider 12 is engaged with each folded-back wall portion 26 via a roller 27 as a drum-shaped rolling element having a large-diameter portion at both ends thereof and a small-diameter portion therebetween. To do. Two rollers 27 are arranged at intervals in the longitudinal direction of the slider 12 (rail member 11) (see FIG. 3). These rollers 27 are integrated by a guide member 36, and are arranged in parallel to each other so that respective axes (rotating shafts) coincide with the orthogonal direction of the bottom wall portion 22. A total of four rollers 27 are arranged including both sides of the slider 12 in the width direction (see FIG. 2). The slider 12 is supported so as to be slidable in the longitudinal direction (the tangential direction of the locus C) with respect to the rail member 11 in such a manner that the rollers 27 roll with the rail member 11.

  A plurality of (six: see FIG. 2 and FIG. 3) rectangular lock holes 23 a arranged in parallel in the longitudinal direction are formed in the folded wall portion 23 on one side in the width direction of the rail member 11 (left side in FIG. 4). It is formed with a predetermined interval.

  Further, a plurality of (two: see FIG. 2 and FIG. 3) insertion holes 24a arranged in parallel in the longitudinal direction are formed in the side wall 24 on one side in the width direction of the slider 12 (left side in FIG. 4). It is formed with the interval of. The plurality of insertion holes 24 a are arranged at positions that can match a plurality (two) of lock holes 23 a adjacent in the longitudinal direction of the rail member 11.

  Further, a plurality of (two) notches 26a arranged in parallel in the longitudinal direction are formed at the predetermined interval on the folded wall portion 26 on one side in the width direction of the slider 12 (left side in FIG. 4). Yes. The plurality of cutouts 26 a are arranged at positions that can match a plurality (two) of lock holes 23 a adjacent in the longitudinal direction of the rail member 11.

  As shown in FIG. 3, a pair of L-shaped support brackets 28 disposed on both sides in the longitudinal direction are fastened to the lid wall portion 25 of the slider 12 so that the both insertion holes 24a are disposed inside. Has been. A lock lever 30 is rotatably supported by these support brackets 28 via a lock lever pin 29 inserted through the support bracket 28.

  As shown in FIG. 4, the lock lever 30 has a plurality of (two: see FIG. 2 and FIG. 3) lock claws 30 a extending outwardly facing the insertion holes 24 a and the notches 26 a. It is formed with a predetermined interval.

Each lock claw 30a of the lock lever 30 is arranged to be detachable with respect to the insertion hole 24a and the notch 26a in accordance with the rotation around the lock lever pin 29.
Here, when each lock claw 30a of the lock lever 30 is inserted into the lock hole 23a together with the insertion hole 24a and the notch 26a, the relative movement of the rail member 11 and the slider 12 is restricted and coupled thereto. The striker 13 is also positioned.

  Alternatively, relative movement of the rail member 11 and the slider 12 is permitted by removing each lock claw 30a of the lock lever 30 from at least the notch 26a and the lock hole 23a.

  The striker device 10 includes a torsion spring 31 into which the lock lever pin 29 is inserted between the pair of support brackets 28, and one end and the other end of the torsion spring 31 are connected to one support bracket 28. And the lock lever 30. The lock lever 30 is always urged by the torsion spring 31 in the rotational direction on the side where the lock claw 30a is inserted into the insertion hole 24a or the like.

  As shown in FIG. 3, the lock lever 30 is formed with a locking piece 30 b extending between the lock claws 30 a toward the lid wall portion 25. 2 and 4, one end of the inner wire 32a of the double-pipe cable 32 is locked to the locking piece 30b. The end of the external wire 32 b of the cable 32 is fixed to a cable bracket 33 fastened to the lid wall portion 25 of the slider 12 together with the pair of support brackets 28. The other end of the internal wire 32a is connected to a release handle (not shown). When the internal wire 32a is pulled by the operation of the release handle, the lock lever 30 opposes the torsion spring 31. The lock claw 30a rotates in the rotation direction on the side away from the insertion hole 24a.

The lock hole 23 a, the lock lever 30, and the surrounding structure that restrict or permit the movement of the slider 12 with respect to the rail member 11 constitute a lock device 20.
As shown in FIG. 3, the striker 13 is formed in a U shape with a round bar, and one end portion 13 a and the other end portion 13 b are connected to the lid wall portion 25 of the slider 12. Has been. That is, the striker 13 is configured such that the other end portion 13 b is rotatably connected to the lid wall portion 25, and the one end portion 13 a engaged with the lock member 4 is the lid wall portion 25. The second end 13b is pivotably connected to the other end 13b.

  Further, the striker device 10 includes the one end portion 13a and the other end portion 13b that swing around the other end portion 13b with respect to the slider 12 (lid wall portion 25). Is provided with a torsion spring 40 for returning to a predetermined original position (see FIG. 2) aligned in the longitudinal direction of the rail member 11.

  Next, the roller 27 and its peripheral structure in this embodiment will be described. FIG. 5 is an enlarged view showing the range S shown in FIG. As shown in the figure, the side wall portion 21 bent from each tip of the bottom wall portion 22 has a concave portion 42 formed in a manner that chamfers a corner portion connected to the bottom wall portion 22.

On the other hand, the U-shaped surface portion 41 has a convex portion 43 formed by projecting a corner portion on the side facing the side wall portion 21 toward the concave portion 42.
The drum 27 has a large-diameter portion 44 at both ends and a small-diameter portion 45 between both large-diameter portions 44 in the axial direction. In the roller 27, one large diameter portion 44 is brought into contact with the concave portion 42, the other large diameter portion 44 is brought into contact with the side wall portion 21 on the opening side of the rail member 11, and the small diameter portion 45 is brought into contact with the convex portion 43. The rail member 11 and the slider 12 are held in contact with each other.

  Here, when the moving distance of the slider 12 relative to the rail member 11 is L, the maximum diameter of the large diameter portion 44 is D1, and the minimum diameter of the small diameter portion 45 is D2, the roller 27 rolls. The moving distance L1 with respect to the slider 12 is (L1 = L × D2 / (D1 + D2)). Therefore, by setting the value of D1 / D2 to be large, the moving distance L1 is set to be sufficiently smaller than the moving distance L of the slider 12 with respect to the rail member 11.

  Next, the guide member 36 formed by integrating two rollers 27 disposed at intervals in the longitudinal direction of the slider 12 will be described. 6A, 6B, and 6C are a plan view, a front view, and a cross-sectional view showing the guide member 36 together with the rollers 27, respectively. As shown in the figure, each of the rollers 27 has a mortar-shaped bearing hole 27a formed at each end of the rotating shaft O1. The guide member 36 includes a first wire 37 and a second wire 38, and a plate 39 as a holding member.

  The first wire rod 37 is made of a wire rod having a circular cross section, and has two shaft portions 37a formed by bending both end portions. Similarly, the said 2nd wire 38 consists of a wire which has a circular cross section, and has the two axial parts 38a formed by bending both ends. The first and second wire rods 37 and 38 are inserted into the one and the other bearing holes 27a so as to sandwich the rollers 27, so that the rollers 27 can rotate freely. To support. The first and second wire rods 37 and 38 are formed with bent portions 37b and 38b that are curved toward opposite sides at the longitudinal center portions (intermediate portions of the shaft portions 37a and 38a), respectively. Has been. The first and second wire rods 37 and 38 have a symmetrical shape, respectively.

  The plate member 39 is formed in a flat plate shape having a height equivalent to the distance between the first and second wire rods 37, 38, and both end portions in contact with the first and second wire rods 37, 38 are respectively It is fastened in such a manner that it is wound around a circular cross section. The first and second wire rods 37 and 38 are integrally held by the plate member 39.

  Further, the plate member 39 is cut in accordance with the positions of the bent portions 37b and 38b, and a pair of regulating wall portions bent into an L shape in such a manner as to abut against the back surfaces of the bent portions 37b and 38b, respectively. 39a is formed. The first and second wire rods 37 and 38 are restricted from rotating about the longitudinal direction of the first and second wire rods 37 and 38 by contacting the corresponding restriction wall portions 39a at the bent portions 37b and 38b. In particular, when either one of the bent portions 37b and 38b is about to rotate to the side away from the opposing regulating wall portion 39a, one of the first and second wire rods 37 and 38 is accompanied by this. Due to the axial displacement of the shaft portions 37a, 38a, that is, the inclination of the rotation axis O1, the first and second wire rods 37, 38 are brought into contact with the opposing regulating wall portion 39a on the other side of the bent portions 37b, 38b. As one of the other tries to rotate, the rotation with the longitudinal direction as the rotation axis is indirectly restricted.

  In addition, since the said board | plate material 39 is cut | disconnected by shaping | molding of the said control wall part 39a according to the position of the said bending parts 37b and 38b, the fastening of the said 1st and 2nd wire rods 37 and 38 in both ends is possible. The bent portions 37b and 38b are not hindered. In other words, the plate member 39 is fastened to the first and second wire members 37 and 38 on both sides of the restriction wall portion 39a (curved portions 37b and 38b).

  The two rollers 27 integrated with the guide member 36 in the above manner are mounted as a unit between the rail member 11 and the slider 12 (the side wall portion 21 and the U-shaped surface portion 41). Is supported so as to be relatively movable.

  In such a configuration, the position of the striker 13 is adjusted by adjusting the relative position of the slider 12 with respect to the rail member 11 whose movement is restricted or allowed by the locking device 20 described above. The inclination angle of the seat back frame 3 can be adjusted around the rotation axis O by adjusting the position of the striker 13 engaged with the lock member 4.

  Here, when the lock member 4 attached to the seat back frame 3 and the striker 13 are engaged, the lock member 4 moves in an arc around the rotation axis O as the seat back frame 3 (seat back) tilts. The gap with the striker 13 that linearly moves along the rail member 11, that is, the radial gap accompanying the rotation of the lock member 4, is absorbed by the swinging of the end portion 13a. The end 13a is urged by the torsion spring 40 to return to the predetermined original position when the engagement with the lock member 4 is released.

  When the engagement between the lock member 4 and the striker 13 is released, the seat back frame 3 can be tilted around the rotation axis O within a range not subject to interference with peripheral members including the striker device 10. Become.

As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) In the present embodiment, the two rollers 27 disposed at intervals in the longitudinal direction of the slider 12 (and the rail member 11) have the first wire rod 37 in all of the one bearing hole 27a. Both shaft portions 37a are rotatably inserted, and both shaft portions 38a of the second wire 38 are rotatably inserted into all of the other bearing holes 27a. And by hold | maintaining the 2nd wire rods 37 and 38 integrally, the orthogonal | vertical state of the rotating shaft O1 with respect to the direction of the rotating shaft O1 with respect to the longitudinal direction of the said rail member 11, ie, a rail advancing direction, can be maintained suitably. The roller 27 can be moved straight in the rail traveling direction with high accuracy. Further, the guide member 36 can keep the distance between the rollers 27 adjacent in the rail traveling direction (longitudinal direction of the rail member 11) constant. Further, since each roller 27 is pivotally supported by the shaft portions 37a and 38a in the bearing hole 27a having a relatively small diameter, the sliding resistance during operation can be reduced, and the slider 12 can be smoothly operated. Can be achieved.

  (2) In the present embodiment, both shaft portions 37a of the first wire rod 37 and both shaft portions 38a of the second wire rod 38 are simply formed by bending both end portions of the first and second wire rods 37 and 38. The distance between the two rollers 27 that are molded and arranged at intervals in the longitudinal direction of the rail member 11 also ensures a suitable accuracy according to the accuracy of the distance between the shaft portions 37a, 38a. be able to. Further, assembly can be easily performed by connecting the plate member 39 to the first and second wire rods 37 and 38 having the rollers 27 sandwiched between the shaft portions 37a and 38a.

  (3) In the present embodiment, the plate member 39 comes into contact with the bent portions 37b, 38b of the first and second wire members 37, 38 in the restriction wall portion 39a, and the first and second wire members 37, 38 By preventing the rotation of the shaft 38, the axial direction of the shaft portions 37a, 38a can be constrained in the direction of the rotation axis O1 of the roller 27. For example, the shaft portions 37a, 38a are disengaged from the bearing holes 27a into which they are inserted. Can be suppressed.

  (4) In this embodiment, the two rollers 27 arranged at intervals in the longitudinal direction of the rail member 11 are formed by the guide member 36 (first and second wire rods 37 and 38 and plate member 39). Since it is unitized, the rail member 11 and the slider 12 can be smoothly mounted.

  (5) In general, the drum-shaped roller 27, which is difficult to support a plurality of shafts integrally, is inserted into the shaft portions 37a, 38a of the first and second wire rods 37, 38 in the bearing holes 27a at both ends. It can be pivotally supported in an extremely simple form.

(6) In the present embodiment, the bearing hole 27a related to the shaft support of the roller 27 can be easily formed by a conventional method.
(7) In the present embodiment, the moving distance L1 with respect to the slider 12 when the roller 27 rolls can be set sufficiently smaller than the moving distance L of the slider 12 with respect to the rail member 11. Thereby, the movement distance L of the slider 12 with respect to the rail member 11 can be lengthened without dropping the roller 27 provided between the rail member 11 and the slider 12 while suppressing an increase in the size of the slider 12. .

  Further, since the moving distance L1 with respect to the slider 12 when the roller 27 rolls can be set small, the two rollers 27 that make a pair in the moving direction of the slider 12 can be arranged at a certain distance. Therefore, the slider 12 can be supported on the rail member 11 in a more stable state at the positions of both the rollers 27.

  (8) In the present embodiment, the pair of rollers 27 arranged to face each other in the width direction are held between the concave portions 42 and the convex portions 43 in such a manner as to press each other in the width direction. The shift in the width direction with respect to the member 11 (or the slider 12) can be restricted.

In addition, you may change the said embodiment as follows.
-In the said embodiment, you may shape | mold the said control wall part 39a in a bag shape in a suitable aspect so that it may contact | abut not only the back surface of the said bending parts 37b and 38b but the surface. Or you may form the fitting hole etc. which fit the said bending parts 37b and 38b in the said board | plate material 39. FIG. In each of these cases, the first and second wire rods 37 and 38 can be more reliably prevented from rotating.

  In the embodiment, the roller 27 (rolling element) having the rotation axis O1 orthogonal to the bottom wall portion 22 (and the lid wall portion 25) is used. However, for example, a rotation axis parallel to the width direction of the bottom wall portion 22 It may be a rolling element having a rotating shaft inclined at a predetermined angle with respect to the width direction.

-In the said embodiment, a cylindrical body and a spherical body may be sufficient as a rolling element (roller).
-In the said embodiment, the guide member holding 3 or more rolling elements (roller) arrange | positioned at intervals in the longitudinal direction of the said rail member 11 may be sufficient. In this case, the rolling elements disposed between the rolling elements at both ends are supported by inserting the shaft portions formed by protruding the first and second wire rods in an I-shape with a single stroke into the bearing holes, for example. And what is necessary is just to provide the holding member (plate | board material) which hold | maintains a 1st and 2nd wire between each adjacent rolling element.

  In the embodiment, the vehicle seat device may be a vehicle seat slide device that moves the vehicle seat 1 (seat cushion 2) in the front-rear direction.

The side view which shows a vehicle seat typically. The front view which shows one Embodiment of this invention. Sectional drawing along the AA line of FIG. Sectional drawing along the BB line of FIG. The enlarged view which shows FIG. (A) (b) (c) is the top view which shows a guide member, a front view, and sectional drawing.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vehicle seat, 3 ... Seat back frame, 4 ... Lock member, 10 ... Strike device, 11 ... Rail member (1st rail member), 12 ... Slider (2nd rail member), 13 ... Striker, 27 ... Roller (Rolling element), 27a ... bearing hole, 36 ... guide member, 37 ... first wire rod, 37a, 38a ... shaft portion, 37b, 38b ... bent portion, 38 ... second wire rod, 39 ... plate member (holding member), 39a ... Restriction wall part.

Claims (1)

A first rail member, a second rail member, and a first rail member that are disposed at intervals in the longitudinal direction of the first rail member and that are in contact with the first and second rail members and relatively move the first and second rail members. In a vehicle seat device comprising a plurality of rolling elements that are supported in a possible manner,
Each of the rolling elements has bearing holes formed at both ends of the rotating shaft,
A first wire having a plurality of shaft portions rotatably inserted into all of the bearing holes of any one of the plurality of rolling elements;
A second wire having a plurality of shaft portions rotatably inserted into all of the other bearing holes of the other of the plurality of rolling elements;
A holding member that is provided between the adjacent rolling elements of the plurality of rolling elements and holds the first and second wire rods ;
The rolling elements disposed at intervals in the longitudinal direction of the first rail member are two,
The first wire has a circular cross section, and the plurality of shaft portions are formed by bending both end portions of the first wire,
The second wire has a circular cross section, and the plurality of shaft portions are formed by bending both end portions of the second wire,
The holding member is a plate member coupled to the first and second wire rods,
Each of the first and second wire rods is formed with a bent portion disposed at an intermediate portion between the two shaft portions,
The said sheet | seat material contact | abuts with the said bending part of the said 1st and 2nd wire, and prevents the said 1st and 2nd wire from rotating, The vehicle seat apparatus characterized by the above-mentioned .

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