Vehicle stopper structure

Abstract

To enable a stopper mechanism whose accuracy control is relatively easy to stop a slide member so as to minimize backlash while securing operability of a movable member.SOLUTION: A stopper mechanism (60) has: an insertion part (70) which is inserted from one member (45) side so as to contact with a slide member (51); and an elastic support part (80) which elastically supports the insertion part (70) in a slide direction of the slide member (51). The insertion part (70) extends from a receiving part (73), which may receive the slide member, in a direction along the slide direction of the slide member (51) and is configured to gradually proceed from a one member (35) side to an other member (45) side as it comes closer to the receiving part (73).SELECTED DRAWING: Figure 19

Description

[Technical field]

[0001] The present invention relates to a vehicle stopper structure comprising a movable member movable relative to a base member, a sliding member disposed between the base member and the movable member, and a stopper mechanism that stops the sliding member at a predetermined position. [Background technology]

[0002] A related seat rotation mechanism is described in Patent Document 1. The seat rotation mechanism described in Patent Document 1 is configured to rotate a plate (moving member) supporting a seat body on a front-rear slide table (base member) on a seat slide mechanism. Four slides (sliding members) are provided separately for the front, rear, left and right on the lower surface of the plate. A plurality of arc-shaped rail members are provided on the upper surface of the front-rear slide table at positions corresponding to each slide. When an occupant gets in, the seat body on which the occupant sits is rotated from a boarding / alighting position facing the door opening to a storage position facing the front of the vehicle using the seat rotation mechanism. At this time, the plate and the front-rear slide table rotate relatively while sliding each slide arranged between them against the rail member. When the seat body reaches the storage position and the plate is locked by the lock mechanism, the seat body is held in the storage position. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-206113 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above configuration, it is desirable that the slide of the plate (the sliding member of the moving member) be in contact with the rail member of the front-rear slide table without any gap from the viewpoint of suppressing the generation of abnormal noise. That is, if the slide rattles up and down against the rail member due to vibration during travel, etc., unintended abnormal noise may be generated. Therefore, an elastic member protruding toward the front-rear slide table side may be provided in the vehicle seat device, and the slide may be pressed against the front-rear slide table side by the elastic force of this elastic member to stop it. However, in such a configuration, the vertical position of the slide to be pressed varies in relation to other slides, making it difficult to manage the gap between the front-rear slide table and the elastic member. In addition, if the slide is strongly pressed by the elastic member, a large operating force is required to rotate the plate in the storage position, and it may be difficult to ensure the operability of the plate. The present invention has been devised in view of the above points, and the problem to be solved by the present invention is to stop the sliding member with as little rattle as possible while ensuring the operability of the moving member by a stopper mechanism whose accuracy is relatively easy to manage. [Means for solving the problem]

[0005] As a means for solving the above problem, the vehicle stopper structure of the first invention includes a moving member movable relative to a base member, a sliding member disposed between the base member and the moving member, and a stopper mechanism for stopping the sliding member at a predetermined position. Here, the sliding member is configured to be slidable on the other member, either the base member or the moving member, while being fixed to one of the base member and the moving member. In this type of configuration, it is desirable to stop the sliding member as much as possible without rattling while ensuring the operability of the moving member by a stopper mechanism whose accuracy is relatively easy to control. Therefore, the stopper mechanism of the present invention has an insertion portion that is inserted so as to come into contact with the sliding member from one member side, and an elastic support portion that elastically supports the insertion portion in the sliding direction of the sliding member. The insertion portion extends from a receiving portion that can receive the sliding member in a direction along the sliding direction of the sliding member, and is configured to gradually move from the other member side to the one member side as it approaches the receiving portion.

[0006] In the stopper mechanism of the present invention, the insertion portion is shaped (generally wedge-shaped) to approach one of the members as it approaches the receiving portion, and is elastically supported by the elastic support portion. The roughly wedge-shaped insertion portion is inserted from one of the members and abuts against the sliding member by the support force of the elastic support portion, thereby stopping the sliding member. Therefore, there is no need to strictly manage the gap between the sliding member and the insertion portion, and the accuracy management of the stopper mechanism can be easily performed. The wedge effect of the insertion portion inserted so as to abut against the sliding member can reduce the gap between the sliding member and the other member, for example, thereby suppressing the rattle of the sliding member. Furthermore, in the stopper mechanism of the present invention, even if the support force of the elastic support portion is weak, the wedge effect of the insertion portion can suppress the rattle of the sliding member. Therefore, an excessive pressing force is not applied to the sliding member, which contributes to ensuring the operability of the moving member.

[0007] No. 1 The vehicle stopper structure of the invention is ,differenceAn adjustment mechanism is provided that can adjust the support force of the elastic support part against the insertion part. In the present invention, by adjusting the support force of the elastic support part against the insertion part with the adjustment mechanism, it is possible to more reliably achieve both operability of the moving member and suppression of rattling of the sliding member.

[0008] No. 2 The vehicle stopper structure of the present invention is 1 In the vehicle stopper structure of the invention, the elastic support part has a shaft extending in the sliding direction of the sliding member and an elastic material fitted to the shaft, and is configured so that the tip of the elastic material can support the insertion part. The adjustment mechanism is a double nut consisting of a first nut screwed onto the shaft and a second nut screwed onto the shaft in the opposite direction to the first nut, and the double nut is screwed so that its position can be adjusted in the extension direction of the shaft while supporting the base end of the elastic material opposite to the tip. In the present invention, the simple adjustment mechanism using the double nut makes it possible to adjust the support force of the insertion part by the elastic support part.

[0009] No. 3 The vehicle stopper structure of the present invention is the first invention or No. 2 Departure Ming The stopper structure for a vehicle includes a moving member that supports a seat body, a rotation mechanism that rotates the moving member on a base member between a storage position facing the front of the vehicle and a boarding / disembarking position facing the door opening, and a plurality of sliding members arranged between the base member and the moving member. Any one of the plurality of sliding members is arranged farther from the rotation center of the seat body in the storage position than another sliding member, and the stopper mechanism is arranged at a position where the one sliding member can be stopped. In the present invention, the moving member is rotated while supporting the seat body, thereby contributing to ensuring ease of boarding and disembarking. The stopper mechanism can stop the sliding member that is relatively far from the rotation center of the seat body in the storage position, i.e., the sliding member that is prone to large rattle. The vehicle stopper structure of the fourth invention includes a moving member movable relative to a base member, a sliding member disposed between the base member and the moving member, and a stopper mechanism for stopping the sliding member at a predetermined position. Here, the sliding member is configured to be slidable on the other member, either the base member or the moving member, while being fixed to one of the base member and the moving member. In this type of configuration, it is desirable to stop the sliding member as much as possible without rattling while ensuring the operability of the moving member by a stopper mechanism whose accuracy is relatively easy to control. Therefore, the stopper mechanism of the present invention has an insertion portion that is inserted from one member side so as to contact the sliding member, and an elastic support portion that elastically supports the insertion portion in the sliding direction of the sliding member. The insertion portion extends from a receiving portion that can receive the sliding member in a direction along the sliding direction of the sliding member, and is configured to gradually move from the other member side to the one member side as it approaches the receiving portion. The seat includes a moving member that supports the seat body, a rotation mechanism that rotates the moving member on the base member between a storage position facing the front of the vehicle and a boarding / alighting position facing the door opening, and a plurality of sliding members that are arranged between the base member and the moving member. Any one of the plurality of sliding members is arranged farther from the rotation center of the seat body in the storage position than the other sliding members, and the stopper mechanism is disposed at a position that allows the one sliding member to be stopped. Effect of the Invention

[0010] According to the first aspect of the present invention, the stopper mechanism, which is relatively easy to control for accuracy, can ensure the operability of the moving member and can stop the sliding member with as little rattling as possible. 1 According to the present invention, it is possible to more reliably achieve both operability of the moving member and suppression of rattling of the sliding member. 2 According to the present invention, it is possible to more reliably achieve both operability of the moving member and suppression of rattling of the sliding member with a relatively simple configuration. Also No. 3 According to the present invention, the ease of getting on and off the seat body can be ensured, while the sliding member can be stopped with as little rattling as possible. According to the fourth aspect of the present invention, the stopper mechanism, the accuracy of which can be controlled relatively easily, can ensure operability of the moving member and ease of getting on and off the seat body, while allowing the sliding member to be stopped with minimal rattling. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a schematic perspective view of the vehicle showing a seat body in the getting-on / off position. [Diagram 2] FIG. 2 is a schematic side view of the vehicle showing the seat body in a stowed position. [Diagram 3] 4 is a schematic cross-sectional view of a rear link in a retracted position as viewed from the rear. FIG. [Figure 4] 4 is a schematic cross-sectional view of a front link in a retracted position as viewed from the rear. FIG. [Diagram 5] 11 is a schematic plan view illustrating an initial stage of operation of the rotation mechanism when moving to a boarding / alighting position. FIG. [Figure 6] 11 is a schematic plan view illustrating a middle stage of operation of the rotation mechanism when moving to the boarding / alighting position. FIG. [Figure 7] 13 is a schematic plan view illustrating a later stage of the operation of the rotation mechanism when it moves to the boarding / alighting position. FIG. [Figure 8] 11 is a schematic plan view illustrating a final stage of operation of the rotation mechanism when moving to the boarding / alighting position. FIG. [Figure 9] 4 is a schematic cross-sectional view of a rear link in a boarding / disembarking position as viewed from the rear. FIG. [Figure 10] 1 is a schematic cross-sectional view of a front link in a boarding / disembarking position as viewed from the rear. FIG. [Figure 11] FIG. 2 is a schematic perspective view showing a movable member and a base member in a see-through manner. [Figure 12] FIG. 4 is a schematic perspective view of a moving member showing a sliding member. [Figure 13] 2 is a schematic perspective view of the stopper mechanism of the vehicle seat apparatus as viewed from the left. FIG. [Figure 14] 2 is a schematic perspective view of a stopper mechanism of the vehicle seat apparatus as viewed from the rear. FIG. [Figure 15] FIG. [Figure 16] 2 is a schematic cross-sectional view of a vehicle seat device showing a stopper mechanism. FIG. [Figure 17] FIG. [Figure 18] 13 is a schematic plan view showing the rotation mechanism when moving to a storage position. FIG. [Figure 19] 13 is a schematic cross-sectional view of the stopper mechanism when receiving a sliding member. FIG. [Figure 20] FIG. 13 is a schematic perspective view of the stopper mechanism when the sliding member is stopped. [Figure 21] FIG. 11 is a schematic cross-sectional view showing an adjustment mechanism of Modification 1. [Figure 22] FIG. 11 is a schematic cross-sectional view showing an adjustment mechanism of a second modified example. [Diagram 23] FIG. 13 is a schematic cross-sectional view showing an adjustment mechanism of a third modified example. [Figure 24] FIG. 11 is a schematic side view of a welfare vehicle according to a second embodiment. [Diagram 25] FIG. 11 is a schematic perspective view showing a part of a lifter according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described with reference to Figs. 1 to 25. In each figure, for convenience, arrows indicating the front-rear direction, left-right direction, and up-down direction of a vehicle are appropriately illustrated. In Figs. 2 to 10, for convenience, only the four-bar link mechanism of the vehicle seat device is illustrated, and the stopper mechanism and each sliding member are simplified or omitted. In Figs. 11 to 14 and 18, only the stopper mechanism and the sliding members are illustrated, and the four-bar link mechanism is omitted. In Fig. 11, for convenience, the members on the moving member side are illustrated by two-dot dashed lines, and the members on the base member side are illustrated by solid lines.

[0013] [Example 1] In the first embodiment, a stopper mechanism provided in a vehicle seat device 10 will be described. The vehicle seat device 10 is a seat device installed on the right side of the vehicle interior of a vehicle 2 as shown in FIG. 1, and has a seat body 20 constituting a front seat on the right side of the vehicle. As shown in FIG. 2, the vehicle seat device 10 includes a front-rear slide mechanism 30 for sliding the seat body 20 in the vehicle front-rear direction, a rotation mechanism 40 for rotating the seat body 20 on the upper side of the front-rear slide mechanism 30, and a stopper mechanism 60 for stopping one of a plurality of sliding members 51 to 54. Here, the front-rear slide mechanism 30 includes a pair of left and right lower rails 32 fixed on a floor F in the vehicle interior and extending in the vehicle front-rear direction, and a pair of left and right upper rails 33 that slide forward and backward along the left and right lower rails 32. Each upper rail 33 is configured to be slide-locked in multiple stages relative to each lower rail 32 by the action of a multi-stage lock mechanism (not shown).

[0014] [Rotation mechanism] 1 and 2, the rotation mechanism 40 is configured to rotate the seat body 20 between a boarding / alighting position facing the door opening D on the right side and a storage position facing the front of the vehicle. As shown in FIG. 2, the rotation mechanism 40 includes a four-joint link mechanism 40r that rotatably supports a moving member 45 that supports the seat body 20 with respect to a base member 35 that cannot rotate, and a plurality of sliding members 51 to 54. The vehicle seat device 10 is provided with a rotation lock device (not shown) that locks the rotation of the rotation mechanism 40. The base member 35 is a plate-like member that is rectangular in an upward view and does not follow the rotation of the seat body 20, and is stretched between the left and right upper rails 33. The moving member 45 is a rectangular member that supports the seat body 20 and is disposed above the base member 35 while being supported by the four-joint link mechanism 40r. As will be described later, each of the sliding members 51 to 54 is provided on either the base member 35 or the moving member 45, and is configured to be slidable on the other of the base member 35 and the moving member 45.

[0015] When the seat body 20 is displaced, the base member 35 and the moving member 45 shown in FIG. 2 rotate relatively while sliding the sliding members 51 to 54 arranged therebetween. When the seat body 20 reaches the storage position, one of the sliding members (51) is stopped by a stopper mechanism 60 as described below so as not to rattle, in order to suppress the generation of abnormal noise. In this type of configuration, it is desirable that the accuracy of the stopper mechanism 60 is easy to control and the operability of the moving member 45 is ensured. In this embodiment, therefore, the stopper mechanism 60, which is relatively easy to control in accuracy, is used to stop one of the sliding members (51) so as to prevent rattling as much as possible while ensuring the operability of the moving member 45. The configurations of the rotation mechanism 40 and the stopper mechanism 60 will be described in detail below.

[0016] [Four-bar link mechanism] Before describing each of the sliding members 51 to 54 and the stopper mechanism 60, an outline of the four-joint link mechanism 40r of the rotation mechanism 40 and its action (rotational operation of the rotation mechanism) will be described first. The four-joint link mechanism 40r shown in Figs. 2 to 4 supports the moving member 45 on the base member 35 so that it can rotate while tilting forward. This four-joint link mechanism 40r is composed of a front link 41 and a rear link 42. The front link 41 and the rear link 42 are connected to the base member 35 and the moving member 45 in a state in which the door opening D side, i.e., the right side, is inclined lower. The front link 41 and the rear link 42 are set so that the height dimension difference between the rotation center side and the free rotation end side, which will be described later, is equal to the gap dimension between the base member 35 and the moving member 45 (see the part indicated by the symbol D1 in Fig. 2).

[0017] The rotation center side of the front link 41 is connected to the right side of the front part of the base member 35 in the width direction via the lower connecting shaft 41d in a rotatable state, as shown in FIG. 5. Here, the base member 35 has an inclined portion 35k at a portion to which the front link 41 is connected, as shown in FIG. 4, and the inclined portion 35k is inclined so as to be lower on the right side (the door opening D side). The lower connecting shaft 41d is connected to the base member 35 at a right angle to the inclined portion 35k. That is, the lower connecting shaft 41d is erected on the base member 35 in a state inclined to the right side. The tip side of the front link 41, that is, the free rotating end side, is connected to the approximately center part of the moving member 45 in a rotatable state via the upper connecting shaft 41u, as shown in FIG. 5. Here, the moving member 45 has an inclined portion 45k at a portion to which the front link 41 is connected, as shown in FIG. 4, and the inclined portion 45k is inclined so as to be lower on the right side at an angle equal to that of the inclined portion 35k of the base member 35. The upper connecting shaft 41u is connected to the moving member 45 at a right angle to the inclined portion 45k. That is, the upper connecting shaft 41u is provided below the moving member 45 at the same inclination angle as the lower connecting shaft 41d.

[0018] The pivot center side of the rear link 42 is pivotally connected to the rear width direction center of the base member 35 via the lower connecting shaft 42d as shown in FIG. 5. Here, the base member 35 has an inclined portion 35k at a portion to which the rear link 42 is connected as shown in FIG. 3. The lower connecting shaft 42d is connected to the base member 35 at a right angle to the inclined portion 35k. That is, the lower connecting shaft 42d is erected on the base member 35 at an inclination angle equal to that of the lower connecting shaft 41d of the front link 41. The tip side of the rear link 42, i.e., the free pivot end side, is pivotally connected to the rear right corner of the moving member 45 via the upper connecting shaft 42u as shown in FIG. 5. Here, the moving member 45 has an inclined portion 45k at a portion to which the rear link 42 is connected as shown in FIG. 3. The upper connecting shaft 42u is connected to the moving member 45 at a right angle to the inclined portion 45k. That is, the upper connecting shaft 42u is provided below the moving member 45 at the same inclination angle as the upper connecting shaft 41u of the front link 41.

[0019] [Outline of the rotation mechanism's rotation operation] Next, the rotational operation of the rotation mechanism 40 when the position of the seat body 20 is displaced will be described (the behavior of each sliding member will be described later). With the above configuration, when an external force is applied in the rightward rotation direction to the seat body 20 in the storage position (see FIG. 5), the tip end side (free rotation end side) of the front link 41 of the four-bar link mechanism 40r receives the external force in the rightward direction via the moving member 45. As a result, the front link 41 rotates left (counterclockwise when viewed from above) from the position shown in FIG. 5 around the lower connecting shaft 41d. That is, the upper connecting shaft 41u connected to the tip end side of the front link 41 moves in an arc so as to approach the door opening D.

[0020] Then, at the beginning of the arcuate movement, that is, until the front link 41 rotates left by θ1° from the storage position (see FIG. 5), the upper connecting shaft 41u and the moving member 45 connected to the upper connecting shaft 41u move backward while moving toward the door opening D (right side). In addition, as the upper connecting shaft 41u connected to the front link 41 moves backward, the upper connecting shaft 42u connected to the tip side of the rear link 42 receives a force in the rear direction via the moving member 45. As a result, the rear link 42 rotates slightly to the right (rotates clockwise when viewed from above) about the lower connecting shaft 42d. As a result, the seat body 20 and the moving member 45 (seat body 20, etc.) move backward while moving toward the door opening D (right side) as shown in FIG. 6 (see white arrow).

[0021] When an external force is applied to the seat body 20 in the right rotation direction from the state in which the front link 41 has rotated left by θ1° from the storage position (see FIG. 6), the seat body 20 and the like rotate rightward while moving to the right, and the front link 41 rotates left from the position of angle θ1, as shown in FIG. 7. Then, in a state in which the front link 41 has rotated left by an angle θ2 from the position of angle θ1, the lower connecting shaft 41d and the upper connecting shaft 41u of the front link 41 and the upper connecting shaft 42u of the rear link 42 are held on a straight line in a plan view. In this state, the moving member 45 faces rightward by approximately the angle θ2, and the rear right corner of the moving member 45 protrudes rearward from the rear end edge of the base member 35. This position is the rearmost position of the moving member 45.

[0022] Next, when an external force is applied to the seat body 20 in the rightward rotation direction at the rearmost rear position, the front link 41 and the rear link 42 rotate left together, and the seat body 20 and the like move forward and rotate right, as shown in Fig. 8. That is, the seat body 20 and the like rotate rightward while moving the rotation center forward. Then, with the front link 41 rotated by an angle θ3 from the rearmost rear position (see Fig. 8), the seat body 20 and the like reach the boarding and disembarking position.

[0023] As described above, the front link 41 and the rear link 42 of the four-bar link mechanism 40r are connected to the base member 35 and the moving member 45 in a state in which they are inclined so that the door opening D side (right side) is lower. Therefore, when the front link 41 and the rear link 42 rotate left from the rearmost position and the seat body 20 etc. rotate rightward while moving the rotation center forward, the seat body 20 etc. are inclined so that the front side is lowered, as shown in Figures 9 and 10. In this way, in this embodiment, the seat body 20 in the storage position can be rotated by the rotation mechanism 40 to the boarding / disembarking position facing the door opening D, which is a configuration that contributes to ensuring excellent boarding / disembarking ease.

[0024] [Sliding parts] Next, the sliding members 51 to 54 shown in Fig. 2 and Fig. 11 will be described. In the vehicle seat device 10, sliding members are provided at approximately four corners, and each of the sliding members 51 to 54 can be provided on either the base member 35 or the moving member 45. For example, referring to Fig. 11, the first sliding member 51 located on the front left side and the second sliding member 52 located on the rear left side are provided on the moving member 45. On the other hand, the third sliding member 53 located on the front right side of the vehicle seat device 10 and the fourth sliding member 54 located on the rear right side are provided on the base member 35. And, each of the sliding members 51 to 54 is configured to be slidable on the guide rails (510 to 540) of the other of the base member 35 and the moving member 45 when the seat main body 20 is displaced, as described later.

[0025] First, the first sliding member 51 is a vertical roller-shaped member shown in Figs. 11 and 12, and is rotatably supported by a receiving plate portion 46 that is substantially rectangular in side view. The receiving plate portion 46 is fixed to the rear end of a support bracket 47 that extends downward and rearward from the left front corner of the moving member 45. In the storage position shown in Fig. 11, the first sliding member 51 on the left front side is disposed at a position farther from the rotation center RC during the rotational movement of the seat body 20 than the other sliding members (52 to 54). The first sliding member 51 is configured to be slidable on a first guide rail 510 provided on the upper surface of the base member 35. The first guide rail 510 extends linearly toward the front right side in an upward view, and gradually inclines forward as it moves toward the right. In the vehicle seat device 10 of this embodiment, the first sliding member 51 corresponds to one sliding member of the present invention, and is configured to be stopped by a stopper mechanism 60 described later.

[0026] The second sliding member 52 located on the rear left side in FIG. 11 is configured to be slidable on a second guide rail 520 provided on the upper surface of the base member 35. This second guide rail 520 extends linearly toward the front right side when viewed from above. The third sliding member 53 located on the front right side is configured to be slidable on a third guide rail 530 provided on the moving member 45. This third guide rail 530 is formed in an arc shape that follows the relative movement path of the third sliding member 53 when the moving member 45 rotates. The fourth sliding member 54 located on the rear right side is configured to be slidable on a fourth guide rail 540 provided on the lower surface of the moving member 45. This fourth guide rail 540 is also formed in an arc shape so as to follow the relative movement path of the fourth sliding member 54.

[0027] [Stopper mechanism] Next, the stopper mechanism 60 shown in Figures 11 and 13 will be described. This stopper mechanism 60 is a mechanism that stops the first sliding member 51 at a predetermined position when the seat body 20 reaches the storage position. That is, the stopper mechanism 60 is arranged at the left position of the first guide rail 510 on the base member 35 side, so that it is possible to stop the first sliding member 51 at that position. The stopper mechanism 60 extends generally in the left-right direction along the first guide rail 510, and has a main body portion 600, an insertion portion 70, an elastic support portion 80, and an adjustment mechanism 90, which will be described later.

[0028] Here, the main body 600 of the stopper mechanism 60 shown in FIG. 13 has a first base portion 61 extending along the first guide rail 510, a second base portion 62, and a third base portion 63. With reference to FIGS. 14 and 15, the first base portion 61 has a rear wall portion 611, an upper wall portion 612 extending forward along the upper end of the rear wall portion 611, and a first flange portion 613 extending rearward from the lower end of the rear wall portion 611. The right end portion of the upper wall portion 612 of the first base portion 61 is inclined upward, and a stopper portion 614 extending forward is formed on the left portion of the upper wall portion 612. The first base portion 61 is disposed on the first guide rail 510 of the base member 35 by fixing the first flange portion 613 to the base member 35. The second base portion 62 is attached so as to cover the upper wall portion 612 and the rear wall portion 611 of the first base portion 61. The right end of the first base portion 61 is exposed from the right end of the second base portion 62, and the stopper portion 614 of the first base portion 61 is exposed from the left portion of the second base portion 62. A mounting flange portion 621 that protrudes downward from the front edge is provided on the left side of the second base portion 62. The second base portion 62 has a second flange portion 622 that protrudes rearward and downward from its rear edge, and this second flange portion 622 is overlapped and fixed to the first flange portion 613 of the first base portion 61.

[0029] 13 to 15, the third base portion 63 of the main body portion 600 is disposed on the left side of the first base portion 61 in a state where it is fixed to the second base portion 62. As shown in Figs. 14 and 15, the third base portion 63 has a bottom plate portion 631 forming a bottom surface and a front plate portion 632 protruding upward from a front edge of the bottom plate portion 631, and the front plate portion 632 is placed on the outer surface (front surface) of the mounting flange portion 621 of the second base portion 62 and fixed with a bolt BM. The third base portion 63 is provided with a right plate portion 633 protruding upward along the right edge of the bottom plate portion 631, and an insertion portion 70 and an elastic support portion 80, which will be described later, are disposed on the right plate portion 633.

[0030] [Insertion part] 15 and 16, the insertion portion 70 is a member inserted from the moving member 45 side (upper side of each figure) so as to come into contact with the first sliding member 51, and is provided on the right side of the third base portion 63 (right plate portion 633). The insertion portion 70 has a generally cubic mounting portion 71 with an open lower side, and an insertion portion 72 provided on the mounting portion 71. The mounting portion 71 is attached to the right side of the third base portion 63 by inserting the right plate portion 633 of the third base portion 63 from below. The left wall 712 of the mounting portion 71 is notched at approximately its center to allow the insertion of the elastic support portion 80 (shaft member 81) described later. The right wall 711 of the mounting portion 71 is integrally provided with the insertion portion 72 that protrudes rightward and upward from its upper position.

[0031] 15 and 16, the insertion portion 72 extends from the attachment portion 71 in the left-right direction along the third guide rail 530, i.e., along the sliding direction of the first sliding member 51. The right end E1 of the insertion portion 72 is located at the uppermost position, and the right end E1 side serves as a receiving portion 73 for receiving the first sliding member 51. The left end E2 of the insertion portion 72 is located at the lowermost position, and is disposed at a position lower than the upper end position E3 of the first sliding member 51 on the first guide rail 510. In this manner, the insertion portion 72 is formed in a shape (generally wedge-shaped) inclined to the right and upward from the attachment portion 71, and is configured to gradually move from the base member 35 side to the moving member 45 side as it moves from the attachment portion 71 to the receiving portion 73. An upper wall portion 612 of the first base portion 61 is located on the movable member 45 side (upper side) of the insertion portion 72, and a right end portion E1 of the insertion portion 72 contacts with this upper wall portion 612.

[0032] [Elastic support part] 15 and 16, the elastic support 80 is a member that elastically supports the insertion portion 70 in the sliding direction of the sliding member (the left-right direction in each figure), and is provided on the left side of the third base portion 63 (right plate portion 633). The elastic support 80 has a generally cylindrical shaft member 81 and a compression coil spring-like elastic member 82 fitted to the shaft member 81. The shaft member 81 is formed so as to extend in the sliding direction of the first sliding member 51, and its right end side is inserted into the right plate portion 633 of the third base portion 63. The elastic member 82 is fitted to the shaft member 81 while facing in the left-right direction. A tip portion 821 on the right side of the elastic member 82 abuts against the left wall 712 of the mounting portion 71 of the insertion portion 70. A base end portion 822 of the elastic member 82 on the opposite side (left side) to the tip portion 821 is supported by an adjustment mechanism 90 described later. Therefore, the elastic support part 80 can elastically support the insertion part 70 in the sliding direction (left-right direction) of the first sliding member 51 by the elastic force of the elastic material 82. Further, the elastic support part 80 is configured to move the insertion part 70 to the left when the elastic material 82 is compressed, and to move the insertion part 70 to the right when the elastic material 82 is expanded.

[0033] [Adjustment mechanism] 15 to 17, the adjustment mechanism 90 is a mechanism capable of adjusting the supporting force of the elastic support part 80 with respect to the insertion part 70, and is attached to the shaft member 81 of the elastic support part 80. The adjustment mechanism 90 is a double nut consisting of a first nut 91 screwed onto the shaft member 81 and a second nut 92 screwed onto the shaft member 81 in the opposite direction to the first nut 91. The first nut 91 is screwed onto a first threaded part 811 on the left side of the shaft member 81, and the second nut 92 is screwed onto a small-diameter second threaded part 812 formed to the left of the first threaded part 811 in the opposite direction. In this way, both nuts 91 and 92 as double nuts are screwed onto the shaft member 81 in a state of abutting against each other (no loosening) so as to support the base end part 822 of the elastic member 82.

[0034] In the adjustment mechanism 90, the double nuts (91, 92) shown in FIG. 16 are screwed in such a way that their positions can be adjusted in the direction in which the shaft member 81 extends, thereby making it possible to adjust the support force for the insertion portion 70. For example, in this embodiment, the position of the double nuts (91, 92) can be adjusted within the range in which the first nut 91 can move relative to the first screw portion 811. Thus, by shifting the position of the double nuts (91, 92) to the right of the shaft member 81 and compressing the elastic material 82, the support force of the elastic support member 80 for the insertion portion 70 can be strengthened. Conversely, by shifting the position of the double nuts (91, 92) to the left of the shaft member 81 and stretching the elastic material 82, the support force of the elastic support member 80 for the insertion portion 70 can be weakened.

[0035] [Behavior of each sliding component during rotational movement of the rotating mechanism] With reference to FIG. 18, when the seat body 20 at the boarding / alighting position rotates to the storage position, the base member 35 and the moving member 45 rotate relatively while sliding the sliding members 51-54 on the guide rails 510-540. Hereinafter, the behavior of each sliding member will be described using the first sliding member 51 provided on the front left side of the moving member 45 as an example. This first sliding member 51 rotates left (rotates counterclockwise when viewed from above) together with the moving member 45 near the storage position and is supported by the first guide rail 510. Then, when the moving member 45 supporting the seat body 20 reaches the storage position, the first sliding member 51 provided on the moving member 45 is stopped by the stopper mechanism 60. In the vehicle seat device 10 at this storage position, the first sliding member 51 is stopped by the stopper mechanism 60 so as not to rattle, and it is desirable that the accuracy of the stopper mechanism 60 at this time be easily controlled. That is, referring to FIG. 16, it is desirable to easily manage the gap between the insertion portion 70 and the first sliding member 51 (the gap indicated by the reference symbol D2 in the figure).

[0036] 16 and 19, the stopper mechanism 60 of this embodiment has an insertion portion 70 that is inserted so as to come into contact with the first sliding member 51 from the moving member 45 side, and an elastic support portion 80 that elastically supports the insertion portion 70 in the sliding direction of the first sliding member 51. The insertion portion 70 extends from a receiving portion 73 that can receive the first sliding member 51 in a direction along the sliding direction of the first sliding member 51, and is configured to gradually move from the base member 35 (the other member) side to the moving member 45 (the one member) side as it approaches the receiving portion 73. In this stopper mechanism 60, the insertion portion 70 is inserted from the moving member 45 side and comes into contact with the first sliding member 51 by the support force of the elastic support portion 80, so that the first sliding member 51 can be stopped. Hereinafter, the operation of the stopper mechanism 60 configured as described above will be described in detail.

[0037] When the moving member 45 rotates relative to the base member 35 to the storage position, as shown in Figs. 16 and 19, the first sliding member 51 provided on the moving member 45 slides on the first guide rail 510 and is guided to the stopper mechanism 60. Next, the first sliding member 51 moves along the first base portion 61 of the stopper mechanism 60 and is received by the receiving portion 73 of the insertion portion 72 of the insertion portion 70. As described above, the insertion portion 72 has a shape (approximately wedge-shaped) that gradually approaches the upper side from the lower side as it moves from the mounting portion 71 to the receiving portion 73. Therefore, as the first sliding member 51 slides further, the insertion portion 72 is inserted into the moving member 45 side, that is, into the gap between the upper wall portion 612 of the first base portion 61 and the first sliding member 51. The elastic force of the elastic support 80 causes the insertion portion 72 of the insertion portion 70 to come into contact with the first sliding member 51 from the moving member 45 side, thereby stopping the first sliding member 51. By making the roughly wedge-shaped insertion portion 72 elastically insertable in this manner, the gap between the first sliding member 51 and the insertion portion 70 (the gap indicated by reference symbol D2 in FIG. 16) can be absorbed by the insertion of the insertion portion 72. Therefore, according to the above configuration, it becomes easy to manage the gap (D2) between the insertion portion 70 and the first sliding member 51 shown in FIG. 16, that is, to manage the accuracy of the stopper mechanism 60.

[0038] In addition, in the elastic support part 80 having the above configuration, the insertion part 70 shown in FIG. 19 is moved to the left by compression of the elastic material 82, and the insertion part 70 is moved to the right by expansion of the elastic material 82. Therefore, in the stopper mechanism 60, when the first sliding member 51 abuts against the insertion part 72, the load of the first sliding member 51 can be absorbed by moving the insertion part 70 to the left by compression of the elastic material 82. Also, when the first sliding member 51 moves to the right in reaction to the abutment with the insertion part 72, the insertion part 70 is moved to the right by expansion of the elastic material 82 to follow. In the stopper mechanism 60, a stopper part 614 is provided on the left part of the first base part 61, and this stopper part 614 is located on the right side of the elastic support part 80 (shaft material 81). Therefore, when the momentum of the first sliding member 51 cannot be sufficiently absorbed by compression of the elastic material 82, the receiving plate portion 46 on which the first sliding member 51 is journaled can be received by the stopper portion 614 as shown in FIG. 20, thereby making it possible to avoid unintended input of load to the elastic support portion 80.

[0039] 19, the insertion portion 72 is inserted between the stopped first sliding member 51 and the upper wall portion 612 of the first base portion 61 by the elastic force of the elastic support portion 80. The insertion portion 72 in this state exerts a wedge effect that tries to push the first sliding member 51 downward by its repulsive force, and this wedge effect is exerted even when the support force of the elastic support portion 80 is weak. Therefore, the wedge effect of the insertion portion 72 reduces the gap between the first sliding member 51 and the first guide rail 510 (base member 35), thereby making it possible to suppress the vertical wobbling of the first sliding member 51. In particular, the first sliding member 51 is relatively far from the rotation center RC of the seat body 20 in the storage position as shown in FIG. 11, and therefore is likely to wobble significantly due to the vertical movement of the seat body 20. Therefore, in the stopper mechanism 60, the wedge effect of the insertion portion 72 shown in FIG. 19 is used to suppress the up and down movement of the first sliding member 51 (the action of the thrusting force), thereby making it possible to prevent the generation of abnormal noise caused by the rattle of the first sliding member 51 as much as possible.

[0040] In addition, in the vehicle seat device 10, when the seat body 20 in the storage position shown in FIG. 11 is rotated to the boarding / alighting position by human force or the like, it is desirable that the operating load of the moving member 45 at that time is small. Therefore, in the stopper mechanism 60 configured as described above, even if the supporting force of the elastic supporting portion 80 shown in FIG. 19 is weak, the wobbling of the first sliding member 51 can be suppressed by the wedge effect of the insertion portion 70. Therefore, the insertion of the insertion portion 72 into the first sliding member 51 is suppressed, and an excessive downward pressing force is not applied to the first sliding member 51. Therefore, when the seat body 20 is moved to the boarding / alighting position, the first sliding member 51 can be moved with a relatively small operating force, which contributes to ensuring the operability of the moving member 45.

[0041] As described above, in the stopper mechanism 60 of this embodiment, the insertion portion 70 has a shape (generally wedge-shaped) that approaches the moving member 45 side as it approaches the receiving portion 73, and is elastically supported by the elastic support portion 80. Therefore, the roughly wedge-shaped insertion portion 70 is inserted from the moving member 45 side by the supporting force of the elastic support portion 80 and abuts against the first sliding member 51, thereby stopping the first sliding member 51. Therefore, there is no need to strictly manage the gap between the first sliding member 51 and the insertion portion 70, and the accuracy management of the stopper mechanism 60 can be easily performed. And, by the wedge effect of the insertion portion 70 inserted so as to abut against the first sliding member 51, the gap between the first sliding member 51 and the base member 35 is narrowed, thereby making it possible to suppress the rattling of the first sliding member 51. In addition, in the stopper mechanism 60 of this embodiment, even if the supporting force of the elastic support portion 80 is weak, the wobbling of the first sliding member 51 can be suppressed by the wedge effect of the insertion portion 70. Therefore, excessive pressing force is not applied to the first sliding member 51, which contributes to ensuring the operability of the moving member 45. Therefore, according to this embodiment, the stopper mechanism 60, which is relatively easy to control in accuracy, can stop the sliding member 45 while ensuring the operability of the moving member 45 and preventing it from wobbling as much as possible. Therefore, the vehicle stopper structure of this embodiment does not require severe parts assembly and inspection work (gap adjustment), and by omitting a member that excessively presses the first sliding member 51 downward, it is a configuration that contributes to reducing assembly costs and parts costs. Furthermore, by adjusting the supporting force of the elastic support portion 80 and reducing the operating force of the moving member 45, it is a configuration that contributes to ensuring an excellent operating feeling.

[0042] Furthermore, in this embodiment, the support force of the insert part 70 by the elastic support part 80 is adjusted by the adjustment mechanism 90, so that both the operability of the moving member 45 and the suppression of the rattle of the first sliding member 51 can be more reliably achieved. In particular, the simple adjustment mechanism 90 using the double nut makes it possible to adjust the support force of the insert part 70 by the elastic support part 80. In addition, in this embodiment, the moving member 45 is rotated while supporting the seat body 20, which contributes to ensuring ease of getting on and off. Then, the first sliding member 51 that is relatively far from the rotation center RC of the seat body 20 in the storage position, i.e., the first sliding member 51 that is prone to rattle, can be stopped by the stopper mechanism 60.

[0043] [Variation 1] Here, the stopper mechanism may have various configurations in addition to the above configuration. For example, the stopper mechanism 60X of the modified example 1 shown in FIG. 21 is provided with an adjuster adjustment mechanism AD (modified adjustment mechanism) that adjusts the vertical position of the insertion part 70, and is configured to change the distance H1 between the insertion part 72 and the base member 35 (first guide rail 510). This adjuster adjustment mechanism AD has an adjuster plate 68 fixed to the upper side of the insertion part 70, and an adjustment screw 69 inserted into the adjuster plate 68 and the moving member 45. The vertical position of the adjuster plate 68 relative to the moving member 45 can be adjusted by rotating the adjustment screw 69. According to the above configuration, it is possible to adjust the support force of the elastic support part 80, that is, the degree of expansion and contraction of the elastic material 82, by changing the distance H1 between the insertion part 72 and the base member 35 by moving the adjuster plate 68 up and down. For example, the closer the insertion portion 72 is to the base member 35, the less the insertion portion 72 is inserted into the first sliding member 51, and the elastic material 82 of the elastic support portion 80 can be compressed (the support force can be strengthened).

[0044] [Variation 2] 22, the insertion portion 72Y of the insertion portion 70Y can be made triangular in cross section, that is, the insertion portion 72Y can be made inclined to the tip (a modification of the adjustment mechanism). In this way, the insertion portion 72Y can be made inclined to the tip, and the support force of the elastic support portion 80 can be adjusted by changing the distance H1 from the base member 35.

[0045] [Variation 3] The stopper mechanism 60Z of the modified example 3 shown in FIG. 23 is configured to be able to select and install an appropriate insertion part or elastic support part from among a plurality of insertion parts or a plurality of elastic materials (a modified example of the adjustment mechanism). For example, the insertion part of the embodiment 1 and the insertion part 70Z having an insertion part 72Z with an inclination angle θ different from that of the embodiment 1 may be prepared, and one of them may be selected and used. Also, the elastic support part of the embodiment 1 and the elastic support part 80Z having an elastic material 82 with a spring constant different from that of the embodiment 1 may be prepared, and one of them may be used. Note that various spring materials and rubber materials (including elastomers) may be appropriately selected and used as the elastic material. Also, it is possible to use a spring material whose spring constant changes in multiple stages, such as an unequal pitch spring, and to configure the spring constant to increase as the insertion part that receives the sliding member approaches the shaft material 81.

[0046] [Example 2] In the second embodiment, the components having the same basic configuration as those in the first embodiment are denoted by corresponding reference numerals and detailed description thereof is omitted. A welfare vehicle C shown in FIG. 24 is provided with a rear lifter 10C for lifting and lowering a wheelchair (not shown) inside the door opening H. The rear lifter 10C is provided with a horizontal platform 20C for placing a wheelchair or the like, and a pair of left and right lifting link mechanisms 40C for lifting and lowering the platform 20C in a horizontal state. A platform holder 30C is provided at the lower end of the lifting link mechanism 40C for supporting the platform 20C from the left and right in a state in which the platform 20C can slide forward and backward. This embodiment is different from the first embodiment in that a stopper mechanism (61C, 62C) is provided in the welfare vehicle C having the rear lifter 10C.

[0047] 24, the lifting link mechanism 40C is composed of fixed metal fittings 41C provided on the left and right rear parts of the vehicle interior floor 15C, a four-joint link mechanism 43C connected to the left and right fixed metal fittings 41C in a vertically rotatable state, a lifting arm 44C in an upright state connected to the tip of the four-joint link mechanism 43C in a vertically rotatable state, and a hydraulic cylinder (not shown) that lifts and lowers the lifting arm 44C by vertically rotating the four-joint link mechanism 43C. The four-joint link mechanism 43C is a link mechanism having relatively rotatable connection points (fulcrums) at the four corners, and is composed of a link support part 411C of the fixed metal fittings 41C, an upper link 433C, a lower link 434C, and a link support part 445C of the lifting arm 44C. The hydraulic cylinder operates to rotate the four-joint link mechanism 43C up and down, so that the lifting arm 44C rises and falls while remaining in the upright position, as shown by the solid line and the two-dot dashed line in FIG.

[0048] As shown in FIG. 25, platform holders 30C are provided at the lower ends of the left and right lifting arms 44C, and the platform 20C is supported by the left and right platform holders 30C in a state in which it can slide back and forth (for convenience, the same members on the right and left sides are given the same reference numerals in FIG. 25). The platform holder 30C is provided with front sliding members 51C at the left and right positions of its front part, and rear sliding members 52C at the left and right positions of its rear part. These front and rear sliding members 51C, 52C are received by upper flanges 200C extending forward and backward at the upper edge of the platform 20C. The platform holder 30C is provided with an electric slide device (not shown) that slides the platform 20C forward and backward relative to the platform holder 30C. The platform 20C is provided with wheel-shaped front end sliding members 53C at the left and right positions of its front end.

[0049] In addition, a recess 17C in which the platform 20C is horizontally stored is formed at the rear of the vehicle interior floor 15C of the welfare vehicle C, as shown in Fig. 24. The platform 20C is slid forward to the forward limit position, i.e., the recess 17C, by the operation of the electric slide device of the platform holder 30C, as shown by the solid line in Fig. 24, so that the platform 20C is stored in the recess 17C of the vehicle interior floor 15C. In this state, the wheelchair placed on the platform 20C can be guided to the floor surface at the front of the vehicle interior floor 15C.

[0050] In the above configuration, the platform 20C as a moving member shown in FIG. 24 moves in the vehicle front-rear direction relative to the vehicle interior floor 15C as a base member. The recess 17C provided at the rear of the vehicle interior floor 15C is in the storage position. The platform 20C moves toward the vehicle front side relative to the platform holder 30C and is placed in the recess 17C, which is in the storage position. In the platform 20C in this storage position, the front end sliding member 53C at its front end is stopped at the front end position of the recess 17C. That is, the front end sliding member 53C is stopped by the first stopper mechanism 61C provided at the front end position of the recess 17C via an L-shaped bracket. In the first stopper mechanism 61C, the insertion portion 71C is configured to move gradually from the lower side to the upper side, that is, from the recess 17C (the other member) side to the platform 20C (the one member) side as it moves toward the rear end (receiving opening). Therefore, by closing the gap between the front end sliding member 53C and the recess 17C due to the wedge effect of the insertion portion 71C, it becomes possible to suppress rattling of the front end sliding member 53C.

[0051] Also, referring to FIG. 24, the platform 20C as a moving member moves toward the front side of the vehicle relative to the platform holder 30C as a base member, so that the rear sliding member 52C of the platform holder 30C moves relative to the rear end of the platform 20C. At this time, the platform holder 30C including the rear sliding member 52C is disposed above the platform 20C including the front end sliding member 53C. The rear sliding member 52C is stopped by a second stopper mechanism 62C provided at the rear end position of the platform 20C. In the second stopper mechanism 62C, the insertion portion 72C is configured to move gradually from the lower side to the upper side as it moves toward the front end (receiving port), that is, from the platform 20C (the other member) side to the platform holder 30C (the one member) side. Therefore, the wedge effect of the insertion portion 72C pushes the rear sliding member 52C downward to suppress the up-down movement, thereby suppressing wobbling of the rear sliding member 52C. Thus, in this embodiment as well, the stopper mechanisms (61C, 62C) whose accuracy can be relatively easily controlled can be used to stop the sliding members (52C, 53C) with as little wobbling as possible while ensuring the operability of the moving members (platform 20C, etc.).

[0052] The vehicle stopper structure of this embodiment is not limited to the above-mentioned embodiment, and may take various other embodiments. In Example 1, the configuration of each sliding member 51 to 54 is exemplified, but the configuration of each sliding member is not limited. For example, a plurality of sliding members can be independently provided on either the base member or the moving member, and at least one of them can be stopped by the stopper mechanism. In a configuration in which the seat body is rotated and moved, the sliding member to be stopped can be selected regardless of the center of rotation, but it is desirable to select a sliding member that is relatively far from the center of rotation (especially the farthest). The number of sliding members can be appropriately set, and the arrangement position of each sliding member does not need to be limited to the four corners or end of the moving member (base member). Various sliding members can be used as the sliding members, and for example, roller-shaped, wheel-shaped, or spherical members can be used.

[0053] In addition, in this embodiment, the configuration of the stopper mechanism is exemplified, but the configuration of the stopper mechanism is not limited. The stopper mechanism requires an insertion portion and an elastic support portion, and may or may not have an adjustment mechanism. The insertion portion (insertion portion) may be configured to change the inclination angle in multiple steps as it approaches the receiving opening (inclined surface shape), or may have a curved surface shape or a stepped shape. The insertion portion may be provided with a plate-shaped or block-shaped (dense) insertion portion. A reinforcing material may be integrally provided on the one member side of the insertion portion, or a reinforcing structure may be provided to reinforce the one member side of the insertion portion. The reinforcing material or reinforcing structure is a substitute for the upper wall portion of the first base portion in Example 1.

[0054] In this embodiment, the configuration in which the moving member is rotated on the base member in Example 1 is exemplified. The moving member can be rotated by a rotating mechanism having a four-joint link mechanism or a rotating mechanism having a driven gear, and it is not necessary to tilt the seat body at the boarding and disembarking position forward (tilt). The moving member can be moved in the vehicle front-rear direction, vehicle width direction, vehicle height direction, etc., relative to the base member, and in this case, the sliding member provided on the moving member, etc. can be stopped by a stopper mechanism. The moving member and the base member may be arranged so as to overlap from the vehicle height direction (vertical direction) or from the vehicle width direction. The configuration of Example 2 can be applied to welfare vehicles such as slope vehicles, and for example, the wheels (sliding members) of a wheelchair or the like as the moving member can be stopped by a stopper mechanism provided on the vehicle interior floor as the base member. The configurations of each example and each modified example can be used in appropriate combination. [Explanation of symbols]

[0055] 2. Vehicle of Example 1 D Door opening F Floor 10 Vehicle seat device 20 Seat body RC (seat body) rotation center 30 Front and rear slide mechanism 32 Lower rail 33 Upper Rail 35 Base member (the other member of the present invention) 35k slope 40 Rotation mechanism 40r Four-bar link mechanism 41 Front link 41u upper connection shaft 41d Lower connecting shaft 42 Rear link 42u Upper connecting shaft 42d Lower connecting shaft 45 Moving member (one of the members of the present invention) 45k Slope 46 Receiving plate part 47 Support bracket 51 First sliding member (sliding member of the present invention) 52 Second sliding member 53 Third sliding member 54 Fourth sliding member 510 First guide rail 520 Second guide rail 530 Third guide rail 540 Fourth guide rail 60 Stopper mechanism 600 Main unit 61 First base part 611 Rear wall 612 Upper wall section 613 First flange part 614 Stopper part 62 Second base part 621 Mounting flange 622 Second flange part 63 Third base part 631 Bottom plate part 632 Front plate part 633 Right plate 70 Insertion section 71 Mounting location 711 Right wall (mounting area) 712 (Mounting location) Left wall 72 Insertion site 73 Reception Department E1 (right end of insertion part) E2 (Left end of insertion part) E3 (First sliding member) upper end position 80 Elastic support part 81 Shaft material 811 First screw part 812 Second screw part 82 Elastic material 821 (Elastic material) tip 822 (of elastic material) base end 90 Adjustment mechanism 91 First Nut 92 Second Nut 60X Stopper mechanism of modification 1 AD adjuster adjustment mechanism 68 Adjuster plate 69 Adjustment screw 60Y Stopper mechanism of modified example 2 70Y Insertion part 72Y Insertion site Stopper mechanism of 60Z variant 3 70Z Insertion Part 72Z Insertion site 80Z Elastic support part C. Welfare vehicle of embodiment 2 H Door opening of Example 2 10C Rear lifter 15C Car Floor 17C Recess 20C Platform 200C Upper flange 30C Platform Holder 40C Lifting link mechanism 41C Fixing bracket 411C (fixture) link support 43C (Example 2) Four-bar link mechanism 433C Top Link 434C Lower Link 44C Lifting arm 445C (Lift arm) link support 51C Front sliding member 52C Rear sliding member 53C Front end sliding member 61C First stopper mechanism 71C (First stopper mechanism) insertion part 62C Second stopper mechanism 72C (Second stopper mechanism) insert

Claims

1. A vehicle stopper structure including a movable member movable relative to a base member, a sliding member disposed between the base member and the movable member, and a stopper mechanism for stopping the sliding member at a predetermined position, the sliding member is configured to be slidable on the other of the base member and the moving member, the other being a member different from the base member and the moving member, while being fixed to either the base member or the moving member; the stopper mechanism includes an insertion portion that is inserted from one member side so as to come into contact with the sliding member, and an elastic support portion that elastically supports the insertion portion in a sliding direction of the sliding member, the insertion portion extends from a receiving portion capable of receiving the sliding member in a direction along a sliding direction of the sliding member, and is configured to gradually move from the other member side toward the one member side as it approaches the receiving portion, A vehicle stopper structure provided with an adjustment mechanism that can adjust the support force of the elastic support portion against the insertion portion.

2. The elastic support portion has a shaft member extending in the sliding direction of the sliding member and an elastic member fitted to the shaft member, and is configured so that the tip end of the elastic member can support the insertion portion, The adjustment mechanism is a double nut including a first nut screwed onto the shaft member and a second nut screwed onto the shaft member in a direction opposite to that of the first nut, The vehicle stopper structure according to claim 1, wherein the double nut is screwed to the shaft member so that its position can be adjusted in the direction of extension of the shaft member while supporting a base end of the elastic material opposite to the tip end.

3. A seat comprising: the moving member supporting a seat body; a rotation mechanism for rotating the moving member on the base member between a storage position facing the front of the vehicle and a boarding / alighting position facing a door opening; and a plurality of sliding members disposed between the base member and the moving member; Any one of the plurality of sliding members is disposed farther from a rotation center of the seat body in a storage position than another sliding member, 3. The stopper structure for a vehicle according to claim 1, wherein the stopper mechanism is disposed at a position where the one sliding member can be stopped.

4. A stopper structure for a vehicle comprising a movable member movable relative to a base member, a sliding member disposed between the base member and the movable member, and a stopper mechanism for stopping the sliding member at a predetermined position, the sliding member is configured to be slidable on the other of the base member and the moving member, the other being a member different from the base member and the moving member, while being fixed to either the base member or the moving member; the stopper mechanism includes an insertion portion that is inserted from one member side so as to come into contact with the sliding member, and an elastic support portion that elastically supports the insertion portion in a sliding direction of the sliding member, the insertion portion extends from a receiving portion capable of receiving the sliding member in a direction along a sliding direction of the sliding member, and is configured to gradually move from the other member side toward the one member side as it approaches the receiving portion, The seat body is provided with the movable member that supports the seat body, a rotation mechanism that rotates and moves the movable member on the base member between a storage position facing the front of the vehicle and an entry / exit position facing a door opening, and a plurality of sliding members that are disposed between the base member and the movable member, Any one of the plurality of sliding members is disposed farther from a rotation center of the seat body in a storage position than another sliding member, The stopper mechanism is disposed at a position where it can stop the one sliding member.

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