JP7575754B2 - Vehicle boarding and alighting devices - Google Patents

Description

The present invention relates to a vehicle boarding and alighting device used by wheelchair users when getting on and off a vehicle.

Conventionally, various types of vehicle boarding and alighting devices are known that are used to facilitate boarding and alighting of a wheelchair user to a vehicle. For example, the vehicle boarding and alighting device disclosed in Patent Document 1 includes a wheelchair having a main frame to which a plurality of wheels are attached and a seat on which a user can sit, and the seat is detachably attached to the upper part of the main frame. A guide rail that can expand and contract toward one side in the width direction of the wheelchair is attached to the upper part of the main frame, while a slider that can slide on the guide rail is attached to the underside of the seat. In addition, one of the vehicle seats inside the vehicle is removed, and a mounting plate for mounting the seat is fixed to the area from which the one vehicle seat was removed. When a wheelchair user is to board a vehicle, the wheelchair with the user seated on the seating seat is moved to the side of the vehicle, the guide rail is extended and connected to a mounting plate inside the vehicle, and the seating seat with the user seated is then slid along the guide rail from the main frame of the wheelchair to the mounting plate to allow the user to board the vehicle. On the other hand, when the user is to disembark from the vehicle, the wheelchair with the seating seat removed is moved to the side of the vehicle, the guide rail is extended and connected to a mounting plate inside the vehicle, and the seating seat with the user seated is then slid along the guide rail from the mounting plate to the main frame of the wheelchair to allow the user to disembark from the vehicle.

JP 2018-410 A

However, in the case of a vehicle boarding and alighting device like that in Patent Document 1, modifications must be made to the vehicle by removing one of the vehicle seats installed inside the vehicle, which increases costs and causes the vehicle to become exclusively for wheelchair users.

The present invention was made in consideration of these points, and its purpose is to provide a vehicle boarding and alighting device that does not require the vehicle to be dedicated to wheelchair users, allows easy boarding and alighting, and is low-cost.

To achieve the above objective, the present invention is characterized by its ingenuity in making it possible to place the seat of a wheelchair on which the user sits directly onto the seat of a vehicle seat installed inside the vehicle.

That is, in a first invention, a wheelchair has a main body frame to which a plurality of wheels are attached, a seat on which a user can sit, and a support attached to the main body frame and removably supporting the seat, a support body configured to be placed on the seat of a vehicle seat provided inside a vehicle and on which the seat can be placed, and a guide rail having one end connectable to the support and the other end connectable to the support body and capable of guiding movement of the seat between the support and the support body , the seat comprising: a seat main body on which a user sits; The seat body is provided at the bottom of the seat body, supports the seat body rotatably around a rotation axis extending in the vertical direction, and is capable of sliding on the guide rail, the guide rail has a guide groove with a concave cross section that extends in a straight line from one end to the other end of the guide rail, the slider is capable of rolling on the guide groove and has a plurality of first rollers arranged in a straight line in the rolling direction, and a second roller is provided at one end of the first roller in the rotation axis direction of the slider, capable of rolling along the rotation axis of the first roller .

The second invention is characterized in that in the first invention, the support is configured to be able to rise and fall relative to the main body frame.

The third invention is characterized in that in the first or second invention, the support is configured to be rotatable around a rotation axis that extends in the vertical direction relative to the main body frame.

In the first invention, when a wheelchair user gets into a vehicle, the seat of the wheelchair with the user sitting on the seat of the vehicle seat installed inside the vehicle can be placed as it is. On the other hand, when the wheelchair user gets off the vehicle, the seat placed on the seat of the vehicle seat can be returned to the main frame of the wheelchair with the user sitting on it. Therefore, it is easy for the wheelchair user to get on and off the vehicle, and it is not necessary to make the vehicle exclusively for the wheelchair user by modifying it such as removing the vehicle seat installed inside the vehicle, so that a low-cost vehicle boarding and alighting device can be made. In addition, in the first invention, when the seat is moved along the guide rail, the seat can be rotated around a rotation axis extending in the vertical direction relative to the slider that slides on the guide rail. Therefore, the seat can be rotated relative to the slider so that a part of the body of the user sitting on the seat does not contact the vehicle door while moving the seat along the guide rail, and a vehicle boarding and alighting device that is comfortable to use can be made. In addition, in the first invention, when the seat is moved along the guide rail, each of the first rollers rolls in the guide groove, so that the frictional resistance between the guide rail and the slider is reduced. Therefore, the seat can be easily moved when the wheelchair user gets on and off, and the load on the worker who supports the wheelchair user to get on and off can be reduced. In addition, in the first invention, when the seat is placed on the support body, the seat is tilted with the second roller as a fulcrum to lift each of the first rollers on the slider from the support, so that the seat can be moved in the rolling direction of the second roller relative to the support body. Therefore, the position of the seat can be easily moved to an optimal position relative to the vehicle seat when the wheelchair user gets on the vehicle.

In the second invention, the height of the support relative to the support body placed on the seat of the vehicle seat can be changed by raising and lowering the support. Therefore, even if the type of vehicle in which the wheelchair user boards and disembarks is changed, the height of the support relative to the support body can be adjusted accordingly, and the seat can be moved between the support and the support body regardless of the type of vehicle.

In the third invention, for example, even if a vehicle in which a wheelchair user gets on and off does not have a sliding door but only has hinged doors, and when the hinged door is opened, there is not enough space between the entrance and exit of the vehicle in which the wheelchair user gets on and off and the hinged door, and the wheelchair cannot be placed directly beside the entrance and exit of the vehicle, the support can be rotated so that the connection part of the support with the guide rail is oriented in a direction corresponding to the mounting body. Therefore, it becomes possible to bridge the guide rail between the wheelchair support and the mounting body placed on the seat of the vehicle seat, and wheelchair users can get on and off the vehicle regardless of the type of door of the vehicle.

1 is a side view showing a state immediately before a wheelchair user gets on to a vehicle using the vehicle boarding/alighting device according to a first embodiment of the present invention. 1 is a side view of a wheelchair constituting a part of a vehicle boarding/alighting device according to a first embodiment of the present invention. 1 is an enlarged exploded side view of a wheelchair that constitutes a part of a vehicle boarding/alighting device according to a first embodiment of the present invention. FIG. 4 is a view taken along the arrow IV in FIG. 3 . FIG. 4 is a view taken along the arrow V in FIG. 3 . 1 is a plan view showing a state before assembly of a vehicle getting on/off device according to a first embodiment of the present invention. FIG. 7 is a view taken along the arrow VII in FIG. 6 . 1 is a plan view showing the state immediately before the wheelchair support body, the guide rail, and the mounting body are connected to each other in a vehicle boarding/alighting device. FIG. 1 is a plan view showing the state immediately after the wheelchair support, guide rail and mounting body are connected to each other in a vehicle boarding/alighting device. FIG. 1 is a plan view showing a state immediately after a wheelchair user starts to board a vehicle. FIG. FIG. 11 is a diagram showing a state after FIG. 10 in which a seat on which a wheelchair user sits is being slid into the vehicle. FIG. 12 is a diagram showing a state immediately after a seating seat on which a wheelchair user sits has been brought to the seat portion of the vehicle seat, following FIG. 11 . FIG. 13 is a view taken along the arrow XIII in FIG. 12 . FIG. 14 is a diagram showing a state immediately before the seat on which a wheelchair user sits is moved to the rear of the vehicle, following FIG. 13 . 15 is a diagram showing the state immediately after the seat on which the wheelchair user sits has been moved to the rear of the vehicle, following FIG. 14 . FIG. 5 is a view corresponding to FIG. 3 according to a second embodiment of the present invention. FIG. 5 is a view corresponding to FIG. 4 of a second embodiment of the present invention. FIG. 6 is a view corresponding to FIG. 5 of a second embodiment of the present invention. FIG. 10 is a view corresponding to FIG. 8 of a second embodiment of the present invention. FIG. 10 is a view corresponding to FIG. 9 according to a second embodiment of the present invention. FIG. 16 corresponds to a view of a third embodiment of the present invention. FIG. 20 is a view corresponding to FIG. 19 according to a third embodiment of the present invention. FIG. 20 corresponds to a view of a third embodiment of the present invention. 23, this figure shows the state immediately after the positions of the support body 26 of the wheelchair 2 and the guide rails 4 have been changed. This is a view taken along the arrow XXV in Figure 23.

The following describes in detail an embodiment of the present invention with reference to the drawings. Note that the following description of the preferred embodiment is essentially merely exemplary.

First Embodiment of the Invention
Fig. 1 shows a state immediately before a wheelchair user H1 is caused to board a vehicle 10 using a vehicle boarding/alighting device 1 according to the first embodiment of the present invention. The vehicle boarding/alighting device 1 is intended to facilitate boarding and alighting of the wheelchair user H1 to and from the vehicle 10, and includes a wheelchair 2 used by the user H1, a carrier 3 configured to be placed on a seat portion 11a of a vehicle seat 11 provided inside the vehicle 10, and a guide rail 4 capable of connecting the wheelchair 2 and carrier 3, as shown in Fig. 6.

As shown in Figures 2 to 6, the wheelchair 2 includes a main frame 21 formed by combining multiple metal pipes, a seat 22 on which a wheelchair user H1 can sit, and a support unit 23 that is attached to the main frame 21 and removably supports the seat 22.

A pair of front wheels 21a that can rotate around a vertically extending axis of rotation are attached to the front lower part of the main frame 21 at a predetermined distance in the vehicle width direction, while a pair of drive wheels 21b that rotate integrally with the hand rims 21c are attached to the rear lower part of the main frame 21 at a predetermined distance in the vehicle width direction.

A pair of hydraulic cylinders 21d, whose cylinder centerlines extend vertically, are attached to the front and rear of the main frame 21 at a predetermined distance in the vehicle width direction, and the piston rods 21e of each hydraulic cylinder 21d are adapted to extend and retract upward.

A push handle 21f is fixed to the rear end of the main frame 21, allowing people other than the wheelchair user H1 to operate the wheelchair 2.

The support unit 23 includes a base plate 24 that is rectangular in plan view and is fixed to the tip of each piston rod 21e, a first rotating plate 25 that is fixed to the upper surface of the base plate 24 and has a rotation axis C1 that extends in the vertical direction, and a support body 26 that is fixed to the upper surface of the first rotating plate 25. The support body 26 can be raised and lowered relative to the main frame 21 by the extension and contraction of each piston rod 21e, and can be rotated around the rotation axis C1 by the rotation of the first rotating plate 25.

As shown in Figures 3 and 5, the support 26 has a bottom plate portion 26a having a rectangular shape in a plan view, a pair of first side wall portions 26b extending along each long side of the bottom plate portion 26a, a second side wall portion 26c extending along one short side of the bottom plate portion 26a between the first side wall portions 26b, and a protrusion portion 26d extending from the center portion of the second side wall portion 26c in parallel along both first side wall portions 26b to the other short side of the bottom plate portion 26a.

A pair of U-shaped grooves 26e that open upward and extend in the longitudinal direction of the bottom plate 26a are formed by the bottom plate 26a, the first side wall 26b, the second side wall 26c, and the protrusion 26d. A rectangular anti-detachment plate 26f is attached to the middle of the protruding end of the protrusion 26d so as to cover a portion of the upward open portion of each groove 26e.

A first mating recess 26g is formed at the opposite end of the second side wall portion 26c in the protrusion portion 26d, while a second mating recess 26h is formed at the opposite end of the second side wall portion 26c in each first side wall portion 26b.

The seat 22 includes a seat body 27 on which the user H1 sits, and a slider 28 provided at the bottom of the seat body 27.

The slider 28 includes a slider body 28a that is fixed to the support 26 when attaching or detaching the seat 22 to the main frame 21, and a second rotating plate 28b that is fixed to the upper surface of the slider body 28a and has a rotation axis C2 that extends in the vertical direction, and supports the seat body 27 so that it can rotate around the rotation axis C2.

As shown in FIG. 4, the slider body 28a includes a slide plate 28c that is rectangular in plan view and a pair of guide blocks 28d that extend in the longitudinal direction of the slide plate 28c. One guide block 28d is fixed to a position corresponding to one of the long sides of the underside of the slide plate 28c, while the other guide block 28d is fixed to a widthwise midpoint of the underside of the slide plate 28c.

As shown in FIG. 3, each guide block 28d has a generally L-shaped cross section, and the lower edge of the opposing faces is formed with an engagement protrusion 28e that protrudes toward the opposing guide block 28d and extends along the longitudinal direction of the slide plate 28c.

As shown in FIG. 4, a pair of roller units 28f extending linearly in the longitudinal direction of the slide plate 28c are provided on the underside of each guide block 28d at a predetermined interval in the longitudinal direction of the slide plate 28c, and each roller unit 28f has multiple first rollers 28g that can roll in the longitudinal direction of the slide plate 28c.

Each guide block 28d is adapted to fit into each of the grooves 26e of the support 26, and each of the engagement protrusions 28e is positioned below the anti-detachment plate 26f, thereby preventing the slider 28 from coming off upward from the support 26.

At a position on the underside of the slide plate 28c near the other long side, i.e., at a position near one end of the rotation axis of the first roller 28g on the slider 28, a pair of second rollers 28h capable of rolling along the rotation axis of the first roller 28g are provided at a predetermined interval in the longitudinal direction of the slide plate 28c.

The slider 28 slides in the longitudinal direction of the support 26 as each of the guide blocks 28d is guided by each of the grooves 26e as each of the first rollers 28g rolls on the bottom plate portion 26a of the support 26.

When user H1 uses wheelchair 2, support 26 and slider 28 are fixed together by a fixing means (not shown).

As shown in Figures 6 and 7, the mounting body 3 has a mounting plate 31 that has a shape corresponding to the seat portion 11a of the vehicle seat 11 in a plan view, and a height adjustment mechanism 32 is provided on the rear side of the mounting plate 31 to adjust the height of the mounting plate 31 relative to the seat portion 11a on the rear side of the vehicle.

A strip-shaped front stopper 33 extending in the vehicle width direction is provided on the vehicle front side of the upper surface of the mounting plate 31, while a strip-shaped rear stopper 34 extending in the vehicle width direction is provided on the vehicle rear side of the upper surface of the mounting plate 31.

The longitudinal dimension of the front stopper 33 is set to be shorter than the dimension between the two second rollers 28h.

The thickness of the front stopper 33 in the vehicle longitudinal direction is set to be thinner than the gap between the second roller 28h of the slider 28 and the guide block 28d at the midpoint of the slide plate 28c.

Furthermore, a strip-shaped lateral stopper 35 extending in the fore-and-aft direction of the vehicle is provided on one side of the upper surface of the mounting plate 31 in the vehicle width direction, and a connection hole 31a penetrating vertically is formed in the center of the other side of the mounting plate 31 in the vehicle width direction.

As shown in Figures 6 and 8, the guide rail 4 is roughly strip-shaped with a thickness, and its width dimension corresponds to the width dimension of the support 26.

The guide rail 4 includes a band plate portion 4a that extends like a band plate in a plan view, a pair of first guide wall portions 4b that extend along each long side of the band plate portion 4a, and a second guide wall portion 4c that extends parallel to the center portions of both first guide wall portions 4b along the first guide wall portions 4b.

A pair of guide grooves 4d that are open upward and extend linearly from one end of the guide rail 4 to the other end in the longitudinal direction are formed by the portion surrounded by the band plate portion 4a, each of the first guide wall portions 4b, and second guide wall portion 4c. The guide grooves 4d are concave in cross section and open upward. A detachment prevention plate 4j that is rectangular in plan view is attached to the middle of the upper end of the second guide wall portion 4c so as to cover a portion of the upward open portion of each guide groove 4d.

One end of the strip portion 4a is inclined so that it gradually becomes positioned toward the other end of the strip portion 4a as it moves from the end of one first guide wall portion 4b toward the other first guide wall portion 4b.

A protruding plate portion 4e that protrudes along the longitudinal direction of the guide rail 4 is formed at one end of the second guide wall portion 4c, and a fixing pin 4f that corresponds to the connection hole 31a of the mounting plate 31 is attached to the protruding plate portion 4e.

The guide rail 4 also has an insertion plate portion 4g that protrudes from the lower edge of one end of the strip portion 4a along the longitudinal direction of the guide rail 4.

The thickness of the insertion plate portion 4g is set to be thinner than the thickness of the band plate portion 4a, and a gap is formed between the insertion plate portion 4g and the protruding plate portion e, and between the insertion plate portion 4g and one end side of the other first guide wall portion 4b.

A first fitting protrusion 4h that can fit into the first fitting recess 26g is formed on the other end of the second guide wall portion 4c, while a second fitting protrusion 4i that can fit into the second fitting recess 26h is formed on the other end of each of the first guide walls 4b.

Then, when the wheelchair user H1 gets on or off the vehicle 10, as shown in FIG. 9, the carrier 3 is placed on the seat 11a of the vehicle seat 11, the wheelchair 2 is moved close to the side of the vehicle 10, and the support 26 is rotated around the rotation axis C1 so that the first fitting recess 26g and the second fitting recess 26h face the carrier 3. Then, the first fitting protrusion 4h and the second fitting protrusion 4i of the guide rail 4 are respectively fitted into the first fitting recess of the support 26. 26g and the second fitting recess 26h, and the guide rail 4 and the support body 26 are fixed with a fixing device (not shown), while the insertion plate portion 4g is inserted between the seat portion 11a and the mounting body 3 so that the protruding plate portion 4e of the guide rail 4 and one end side of the other first guide wall portion 4b are positioned on the upper surface side of the mounting plate 31, and the fixing pin 4f is inserted into the connection hole 31a of the mounting plate 31 to fix the mounting body 3 and the guide rail 4.

That is, when the wheelchair user H1 gets on or off the vehicle 10, one end of the guide rail 4 is connected to the support 26, while the other end of the guide rail 4 is connected to the mounting body 3. For example, when the wheelchair user H1 gets on the vehicle 10, after connecting the mounting body 3, the guide rail 4, and the support 26, as shown in Figs. 10 to 12, the first rollers 28g of the slider 28 are rolled in the grooves 26e of the support 26 and the guide grooves 4d of the guide rail 4 in order, so that the seating seat 22 on which the user H1 sits can be moved to the mounting body 3. That is, the guide rail 4 guides the movement of the seating seat 22 between the support 26 and the mounting body 3.

As shown in Figs. 13 to 15, the seating seat 22 placed on the mounting body 3 is tilted toward the front of the vehicle to bring the second rollers 28h of the seating seat 22 into contact with the upper surface of the mounting plate 31, while the first rollers 28g are spaced apart from the upper surface of the mounting plate 31, and the second rollers 28h are rolled in the fore-aft direction of the vehicle, so that the position of the seating seat 22 in the fore-aft direction of the vehicle relative to the seat portion 11a of the vehicle seat 11 can be adjusted.

Note that the movement of the seat 22 when the wheelchair user H1 disembarks from the vehicle 10 is simply the opposite of the movement of the seat 22 when the wheelchair user H1 boards the vehicle 10, so for the sake of simplicity, a detailed explanation is omitted.

Next, the process of wheelchair user H1 boarding the vehicle 10 using the vehicle boarding/alighting device 1 will be described in detail.

First, as shown in FIG. 6, the worker opens the door corresponding to the vehicle seat 11 of the vehicle 10 into which the wheelchair user H1 is to board, and moves the wheelchair 2 close to the vehicle seat 11.

After placing the support body 3 on the seat portion 11a of the vehicle seat 11, the height adjustment mechanism 32 is operated so that the support plate 31 is in a horizontally extending position, as shown in FIG. 7.

Next, the piston rods 21e of each hydraulic cylinder 21d of the wheelchair 2 are raised and lowered to adjust the height of the support 26 relative to the base 3, and then the guide rails 4 are prepared between the wheelchair 2 and the base 3, as shown in FIG. 8.

9, the support 26 is rotated around the rotation axis C1 to orient the first fitting recess 26g and the second fitting recess 26h toward the mounting body 3. Then, the first fitting protrusion 4h and the second fitting protrusion 4i of the guide rail 4 are fitted into the first fitting recess 26g and the second fitting recess 26h of the support 26, respectively, and then the guide rail 4 and the support 26 are fixed with a fixing device (not shown). In addition, the insertion plate portion 4g is inserted between the seat portion 11a and the mounting body 3 so that the protruding plate portion 4e of the guide rail 4 and one end side of the other first guide wall portion 4b are positioned on the upper surface side of the mounting plate 31, and then the fixing pin 4f is inserted into the connection hole 31a of the mounting plate 31 to fix the mounting body 3 and the guide rail 4.

Then, the worker separates the seating seat 22 on which the wheelchair user H1 sits from the support body 26 by operating a fixing means (not shown), and then, as shown in Figures 10 and 11, moves the seating seat 22 along the guide rail 4 to the placement body 3 while rolling each of the first rollers 28g of the slider 28 in the concave grooves 26e of the support body 26 and the guide grooves 4d of the guide rail 4 in sequence. At this time, the seating seat 22 is moved while rotating around the rotation axis C2 relative to the slider 28 so that the legs, etc. of the wheelchair user H1 seated on the seating seat 22 are in a position not to come into contact with the open door of the vehicle 10.

As shown in Figs. 12 and 13, when the seating seat 22 reaches the area on the mounting plate 31 surrounded by the front stopper 33, the rear stopper 34, and the side stopper 35, the worker applies force to the seating seat 22 toward the front of the vehicle. Then, as shown in Fig. 14, the seating seat 22 tilts toward the front of the vehicle, and the second rollers 28h of the seating seat 22 come into contact with the upper surface of the mounting plate 31, while the first rollers 28g move away from the upper surface of the mounting plate 31. Then, as shown in Fig. 15, the second rollers 28h are rolled to change the position of the seating seat 22 relative to the mounting plate 31 in the fore-and-aft direction of the vehicle, and the seating seat 22 is returned to its original position.

Then, while the wheelchair user H1 remains seated on the seating seat 22, a seat belt (not shown) attached to the vehicle 10 is put around the wheelchair user H1, and the guide rail 4 is removed from the support body 3, completing the process of the wheelchair user H1 getting into the vehicle 10.

Note that the procedure for wheelchair user H1 to disembark from vehicle 10 using vehicle boarding/disembarking device 1 is simply the opposite of the procedure for wheelchair user H1 to board vehicle 10, so a detailed explanation will be omitted.

As described above, according to the first embodiment of the present invention, when the user H1 of the wheelchair 2 gets on the vehicle 10, the seat 22 of the wheelchair 2 with the user H1 on it can be placed as is on the seat 11a of the vehicle seat 11 installed inside the vehicle 10. On the other hand, when the user H1 of the wheelchair 2 gets off the vehicle 10, the seat 22 placed on the seat 11a of the vehicle seat 11 can be returned to the main frame 21 of the wheelchair 2 with the user H1 still seated on it. This makes it easier for the wheelchair user H1 to get on and off the vehicle 10, and eliminates the need to modify the vehicle 10 to be exclusively for the wheelchair user H1 by removing the vehicle seat 11 installed inside the vehicle 10, making it possible to provide a low-cost vehicle boarding and alighting device 1.

In addition, by raising and lowering the support 26, the height of the support 26 relative to the support body 3 placed on the seat portion 11a of the vehicle seat 11 can be changed. Therefore, even if the type of vehicle in which the wheelchair user H1 gets on and off is changed, the height of the support 26 relative to the support body 3 can be adjusted accordingly, and the seat 22 can be moved between the support 26 and the support body 3 regardless of the type of vehicle.

In addition, for example, even if the vehicle 10 on which the wheelchair 2 user H1 gets on and off does not have a sliding door but has only hinged doors, and when the hinged door is opened, there is not enough space between the boarding/alighting entrance of the vehicle 10 on which the wheelchair 2 user H1 gets on and off and the hinged door, and the wheelchair 2 cannot be placed directly beside the boarding/alighting entrance of the vehicle 10, the support 26 can be rotated so that the connection portion of the support 26 with the guide rail 4 is oriented in a direction corresponding to the mounting body 3. Therefore, the guide rail 4 can be bridged between the support 26 of the wheelchair 2 and the mounting body 3 placed on the seat portion 11a of the vehicle seat 11, and the wheelchair user H1 can get on and off the vehicle 10 regardless of the type of door of the vehicle 10.

In addition, when the seat 22 is moved along the guide rail 4, the seat 22 can be rotated around the rotation axis C2 extending in the vertical direction relative to the slider 28 that slides on the guide rail 4. Therefore, while the seat 22 is moving along the guide rail 4, the seat 22 can be rotated relative to the slider 28 so that part of the body of the user H1 seated on the seat 22 is not in contact with the door of the vehicle 10, and the vehicle boarding/alighting device 1 can be made comfortable to use.

In addition, when the seat 22 is moved along the guide rail 4, each of the first rollers 28g rolls in the guide groove 4d, so frictional resistance between the guide rail 4 and the slider 28 is reduced. Therefore, the seat 22 can be easily moved when the wheelchair user H1 gets on and off, and the load on the worker who supports the wheelchair user H1 getting on and off can be reduced.

Furthermore, when the seat 22 is placed on the support 3, tilting the seat 22 with the second roller 28h as a fulcrum to lift each of the first rollers 28g of the slider 28 off the support 26 makes it possible to move the seat 22 in the rolling direction of the second roller 28h relative to the support 3. Therefore, when the wheelchair user H1 boards the vehicle 10, the position of the seat 22 relative to the vehicle seat 11 can be easily moved to an optimal position.

Second Embodiment of the Invention
16 to 20 show a vehicle getting-in/out device 1 according to a second embodiment of the present invention. This second embodiment is similar to the first embodiment except that the seat 22, the support 26, the guide rail 4, and the mounting body 3 are partially different from those in the first embodiment. Therefore, the same parts as those in the first embodiment are denoted by the same reference numerals, and only the different parts will be described.

The support 26 in embodiment 2 is fixed to a position near the front of the upper surface of the base plate 24, as shown in Figures 16 and 18.

The support 26 extends in a strip-like shape across the width of the wheelchair 2 and has three fixing plates 26i arranged at equal intervals in the front-to-rear direction of the wheelchair 2, and a first guide frame 26j with a generally hat-shaped cross section is fixed to the central fixing plate 26i.

The first guide frame 26j has a pair of legs 26p that face each other and extend in the width direction of the wheelchair 2, and an upper plate 26q that is integrally formed at the tip of both legs 26p so that a space is formed between the fixing plate 26i and the upper plate 26q.

A first slit 26n is formed in the center of the upper plate portion 26q, which extends linearly from one end to the other in the longitudinal direction and is open at both ends, and the right end of the first slit 26n in the width direction of the wheelchair 2 has an open V-shape in plan view.

First bearing frames 26k with a generally hat-shaped cross section are fixed to the fixing plates 26i located at the front and rear of the wheelchair 2, and each first bearing frame 26k extends parallel to the first guide frame 26j.

The upper plate portion of the first bearing frame 26k supports a number of first free ball bearings 26r upward so that they can roll freely.

The first free ball bearings 26r are arranged at equal intervals in the width direction of the wheelchair 2, allowing the seat 22 to be placed on them.

A movement restriction frame 29, which has a generally L-shaped cross section and extends in the front-rear direction of the wheelchair 2, is fixed to the upper surface of the base plate 24 on the left side in the width direction of the wheelchair 2, and the upper end position of the movement restriction frame 29 is set at a position higher than the first free ball bearings 26r supported by each of the first bearing frames 26k. Note that in Figure 16, for convenience, only the location of the movement restriction frame 29 is shown.

As shown in Figures 16 and 17, the seat body 27 in the seat 22 of embodiment 2 has a rectangular seat plate 27a attached to the underside.

The seat plate 27a has an engagement portion 27c that protrudes from the center of its underside and is roughly T-shaped when viewed from the side.

The engagement portion 27c includes a cylindrical neck portion 27d extending downward from the seat plate 27a and a disk-shaped insertion base portion 27e having a certain thickness that is continuous with the lower portion of the neck portion 27d, and the insertion base portion 27e is rotatable relative to the neck portion 27d.

The outer diameter of the neck 27d corresponds to the width of the first slit 26n, while the outer diameter of the insertion base 27e is set to be larger than the width of the first slit 26n. When the neck 27d is inserted from the open portion of the first slit 26n, the engagement portion 27c slides into the first slit 26n and engages with the first guide frame 26j rotatably around the rotation axis C2 extending in the vertical direction. The seat body 27 of the seat 22 seats on the first free ball bearings 26r of the first bearing frames 26k, and the rollable first free ball bearings 26r support the seat 22.

When user H1 uses wheelchair 2, support body 26 and seat plate 27a are fixed together by a fixing means (not shown).

As shown in FIG. 19, the guide rail 4 of the second embodiment includes a guide plate 4r that is rectangular in plan view, and a connecting plate 4n that is approximately rectangular in plan view is fixed to the back surface of one longitudinal end of the guide plate 4r so that a portion of the connecting plate 4n protrudes from one end of the guide plate 4r.

A second guide frame 4k with a generally hat-shaped cross section is fixed to the center of the top surface of the guide plate 4r and extends in the longitudinal direction of the guide plate 4r, with both ends of the second guide frame 4k protruding from the ends of the guide plate 4r.

The second guide frame 4k has a pair of legs 4s that face each other and extend in the longitudinal direction of the second guide frame 4k, and an upper plate 4t that is integrally formed at the tips of both legs 4s so that a space is formed between the guide plate 4r and the legs 4s.

A second slit 4v is formed in the center of the upper plate portion 4t, extending linearly from one end to the other in the longitudinal direction and open at both ends, and both ends of the second slit 4v are open in a V-shape when viewed in a plane.

The width dimension of the second slit 4v corresponds to the outer diameter of the neck portion 27d of the engagement portion 27c of the seat 22, but is set smaller than the outer diameter of the insertion base portion 27e of the engagement portion 27c.

Second bearing frames 4w, each with a roughly hat-shaped cross section, are fixed at a predetermined distance from the second guide frame 4k on the upper surface of the guide plate 4r on both sides of the second guide frame 4k and extend linearly along the second guide frame 4k, and each second bearing frame 4w extends from both ends of the guide plate 4r in the longitudinal direction.

The upper plate portion of the second bearing frame 4w supports a number of second free ball bearings 4m facing upward so that they can roll freely.

The second free ball bearings 4m are arranged at equal intervals along the longitudinal direction of the guide plate 4r, allowing the seat 22 to be placed on them.

A connecting pin 4p is provided in the center of the connecting plate 4n, which can be inserted into a connecting hole 24a formed near one end of the first guide frame 26j in the base plate 24. When the connecting pin 4p is inserted into the connecting hole 24a, the guide rail 4 can be rotated around the connecting pin 4p relative to the base plate 24.

When the neck portion 27d of the engagement portion 27c of the seating seat 22 is inserted through the open portion of the second slit 4v, the engagement portion 27c slides into the second slit 4v and engages with the second guide frame 4k rotatably about the rotation axis C2 extending in the vertical direction, the seat body 27 of the seating seat 22 seats on each of the second free ball bearings 4m of each of the second bearing frames 4w, and each of the rollable second free ball bearings 4m supports the seating seat 22.

As shown in FIG. 19, a pair of third bearing frames 3a extending in the vehicle width direction are fixed at a predetermined distance in the vehicle front-rear direction to the upper surface of the mounting plate 31 in the mounting body 3 of the second embodiment.

The upper plate portion of the third bearing frame 3a supports a number of third free ball bearings 3b facing upward so that they can roll freely.

The third free ball bearings 3b are arranged side by side at equal intervals in the vehicle width direction, allowing the seat 22 to be placed on them.

A connecting plate 3c, which is rectangular in plan view, is fixed to the back surface of the mounting plate 31 so that a portion of the connecting plate 3c protrudes from one end of the mounting plate 31. The other end of the guide plate 4r of the guide rail 4 is placed on the protruding portion of the mounting plate 31, thereby connecting the guide rail 4 to the mounting body 3.

When the wheelchair user H1 gets on or off the vehicle 10, as shown in FIG. 20, the support body 3 is placed on the seat 11a of the vehicle seat 11 and the wheelchair 2 is moved close to the side of the vehicle 10, and then the second guide frame 4k of the guide rail 4 is brought close to the support body 26, the connecting plate 4n of the guide rail 4 is placed on the upper surface of the base plate 24 and the connecting pin 4p is inserted into the connecting hole 24a to connect the guide rail 4 to the base plate 24, while the other end of the guide plate 4r of the guide rail 4 is placed on the upper surface of the connecting plate 3c of the support body 3 to connect the guide rail 4 to the support plate 31.

For example, when a wheelchair user H1 is to board the vehicle 10, after connecting the mounting body 3, the guide rail 4, and the support 26, the engaging portion 27c of the seat 22 is guided in sequence through the first slit 26n of the first guide frame 26j and the second slit 4v of the second guide frame 4k, and the seat 22 on which the user H1 sits, placed on the first free ball bearings 26r, the second free ball bearings 4m, and the third free ball bearings 3b, can be moved to the mounting body 3 by the rolling motion of the first free ball bearings 26r, the second free ball bearings 4m, and the third free ball bearings 3b.

In addition, the seat 22 can be rotated around the vertical axis C2 with the engaging portion 27c engaged with the first guide frame 26j and the second guide frame 4k, so that the legs of the wheelchair user H1 seated on the seat 22 do not come into contact with the open door of the vehicle 10.

Furthermore, the seat 22 moved to the support body 3 can be moved forward and backward in the vehicle by the rolling motion of each of the third free ball bearings 3b, on which the user H1 sits, or rotated around the rotation axis C2 to adjust the position and posture of the seat 22.

The movement of the seat 22 when the wheelchair user H1 disembarks from the vehicle 10 is simply opposite to the movement of the seat 22 when the wheelchair user H1 boards the vehicle 10, so a detailed explanation will be omitted.

As described above, according to the second embodiment of the present invention, when the guide rail 4 is connected to the support 26 and a force is applied to the seat 22 toward the guide rail 4, the seat 22 moves toward the guide rail 4 while the engagement portion 27c of the seat 22 is guided by the first slit 26n. At this time, the seat 22 is supported by the first free ball bearings 26r that can roll freely, so the seat 22 can be moved toward the guide rail 4 without load. In addition, when a force is applied to the seat 22 in the circumferential direction centered on the engagement portion 27c, the seat 22 rotates around the rotation axis C2 that extends in the vertical direction. At this time, the first free ball bearings 26r support the seat 22 in a rollable manner, so the worker can easily rotate the seat 22 so that a part of the body of the user H1 seated on the seat 22 does not contact the door of the vehicle 10 while moving the seat 22.

In addition, when the engagement portion 27c of the seating seat 22 that has been moved from the support body 26 to the guide rail 4 is engaged with the second slit 4v of the second guide frame 4k and a force is applied to the seating seat 22 toward the mounting body 3, the engagement portion 27c of the seating seat 22 is guided by the second slit 4v and the seating seat 22 moves toward the mounting body 3. At this time, the second free ball bearings 4m that are free to roll support the seating seat 22, so the worker can move the seating seat 22 toward the mounting body 3 without any load. In addition, when a force is applied to the seating seat 22 in the circumferential direction centered on the engagement portion 27c, the seating seat 22 rotates around the rotation axis C2 that extends in the vertical direction. At this time, the seating seat 22 is supported by the second free ball bearings 4m that are free to roll, so the worker can rotate the seating seat 22 without any load so that the user H1 sitting on the seating seat 22 assumes a position where no part of the body of the user H1 does not come into contact with the door of the vehicle 10 while moving the seating seat 22.

Between the seating seat 22 that has moved from the guide rail 4 to the mounting body 3 and the vehicle seat 11, the third free ball bearings 3b that can roll support the seating seat 22, so that the operator can easily move the seating seat 22 or rotate it around the vertically extending rotation axis C2 so that the body of the user H1 seated on the seating seat 22 assumes a specified posture. Therefore, the position of the seating seat 22 relative to the vehicle seat 11 when the wheelchair user H1 boards the vehicle 10 can be easily moved to an optimal position.

Third Embodiment of the Invention
21 to 25 show a vehicle getting-in/out device 1 according to a third embodiment of the present invention. The third embodiment is similar to the second embodiment except that the seat 22, the support 26, the guide rail 4, and the mounting body 3 are partially different from those in the second embodiment. Therefore, the same parts as those in the second embodiment are denoted by the same reference numerals, and only the different parts will be described.

As shown in Figures 21 and 22, the three fixing plates 26i in the third embodiment extend in the fore-aft direction of the wheelchair 2 and are spaced apart at a predetermined interval in the width direction of the wheelchair 2.

The central fixing plate 26i is U-shaped in plan view and extends linearly from approximately the center of the base plate 24 toward the front of the wheelchair 2, then changes direction and extends linearly toward the front right corner of the base plate 24.

The front portion of the fixing plate 26i located on the right side of the wheelchair 2 in the vehicle width direction is divided in the vehicle front-rear direction by the central fixing plate 26i.

The first guide frame 26j is roughly L-shaped in plan view, corresponding to the central fixing plate 26i, and is wider and flatter in both the vertical direction than the first guide frame 26j of the second embodiment.

The first slit 26n in the first guide frame 26j is wider than in the second embodiment, and one end portion near the front right corner of the base plate 24 is open while the other end portion is closed.

In the third embodiment, the first bearing frame 26k as in the second embodiment is not provided, and the fixing plates 26i located on both sides of the wheelchair 2 in the width direction directly support the first free ball bearings 26r upward so that they can roll freely.

The movement restriction frame 29 is in the shape of a strip extending in the width direction of the wheelchair 2 and is positioned on the upper surface of the base plate 24 at the rear of the wheelchair 2.

A first connecting pin 24b protrudes from near one end of the first guide frame 26j on the top surface of the base plate 24.

The engagement portion 27c of the seat 22 has a neck portion 27d and an insertion base portion 27e that are flatter than those in the second embodiment.

As shown in FIG. 22, the guide plate 4r has a shape in which approximately half of the edge portion on the vehicle rear side that connects to the mounting body 3 extends diagonally in a plan view, so that it can be connected in an oblique position to the mounting plate 31 of the mounting body 3.

The second guide frame 4k is wider than the second guide frame 4k of the second embodiment and has a flat shape from top to bottom, with both ends positioned so as not to protrude beyond the ends of the guide plate 4r.

The second slit 4v in the second guide frame 4k is wider than the second slit 4v in embodiment 2.

In the third embodiment, the second bearing frame 4w as in the second embodiment is not provided, and the areas on both sides of the second guide frame 4k on the upper surface of the guide plate 4r directly support a number of second free ball bearings 4m facing upwards so that they can roll freely.

A first connection hole 4x is formed at the center of one end of the second guide frame 4k, penetrating the second guide frame 4k and the guide plate 4r. By inserting the first connection pin 24b of the base plate 24 into the first connection hole 4x, the guide rail 4 is connected to the base plate 24 and the guide rail 4 can be rotated around the first connection pin 24b relative to the base plate 24.

On the other hand, a second connection hole 4y is formed at the center of the other end of the second guide frame 4k, penetrating the second guide frame 4k and the guide plate 4r.

As shown in Fig. 22, the mounting body 3 of the third embodiment is equipped with a third guide frame 3d that is substantially L-shaped in a plan view. The third guide frame 3d extends linearly from a position slightly toward the front of the vehicle at one end of the mounting plate 31 in the vehicle width direction toward the other side in the vehicle width direction, and then turns toward the rear of the vehicle midway in the vehicle width direction and extends linearly again.

The third guide frame 3d has a pair of legs 3e that face each other and extend in an L-shape in a plan view, and an upper plate 3f that is integrally formed at the tips of both legs 3e so that a gap is formed between them and the mounting plate 31.

A third slit 3u is formed in the center of the upper plate portion 3f, extending from one end of the third guide frame 3d to the other end in a generally L-shape in plan view. One end of the third slit 3u is open at a position slightly toward the front of the vehicle at one end of the mounting plate 31 in the vehicle width direction, while the other end is closed.

The width dimension of the third slit 3u corresponds to the outer diameter of the neck portion 27d at the engagement portion 27c of the seating seat 22, but is set smaller than the outer diameter of the insertion base portion 27e at the engagement portion 27c.

In the third embodiment, the third free ball bearings 3b are arranged in large numbers at appropriate locations on the upper surface of the mounting plate 31 so as to surround the third guide frame 3d, and are fixed to the mounting plate 31.

In other words, the area on the top surface of the mounting plate 31 excluding the third guide frame 3d directly supports a large number of third free ball bearings 3b upward so that they can roll freely.

A first fastener 3h is provided at the front corner of the left edge of the upper surface of the mounting plate 31 in the vehicle width direction. The tip end of the first fastener 3h projects outward from the outer periphery of the mounting plate 31, while the base end of the first fastener 3h is supported by the mounting plate 31 so as to be rotatable around a rotation axis that extends vertically.

On the other hand, a second fastener 3i is disposed on the top surface of the mounting plate 31 at a position toward the rear of the left edge in the vehicle width direction. The tip side of the second fastener 3i protrudes from the outer peripheral edge of the mounting plate 31 to the left in the vehicle width direction, while the base end portion is fixed to the mounting plate 31.

In addition, a height adjustment mechanism 32 similar to that of the first embodiment is provided on the rear portion of the mounting plate 31, and a pair of rear stoppers 34 that are approximately L-shaped in side view are attached to both sides of the height adjustment mechanism 32 on the upper surface of the mounting plate 31 in the vehicle width direction.

In the third embodiment, a second connecting pin 3g is provided in the center of the upper surface of the connecting plate 3c, which can be inserted into a second connecting hole 4y formed in the guide rail 4. By inserting the second connecting pin 3g into the second connecting hole 4y, the guide rail 4 is connected to the connecting plate 3c and the guide rail 4 can be rotated around the second connecting pin 3g relative to the connecting plate 3c.

In addition, when the guide rail 4 is connected to the connection plate 3c, the guide rail 4 is rotated toward the rear of the vehicle, and the first fastener 3h is rotated from a position extending toward the front of the vehicle to a position extending to the left in the vehicle width direction, the first fastener 3h and the second fastener 3i are positioned above the guide plate 4r, preventing the guide plate 4r from floating up from the connection plate 3c, and preventing the guide rail 4 and the connection plate 3c from accidentally coming off.

As shown in FIG. 25, a first side plate 3j, which is a strip-like plate extending in the fore-and-aft direction of the vehicle, is fixed to the left edge of the rear surface of the connection plate 3c in the vehicle width direction.

A support mechanism 39 that stabilizes the horizontal orientation of the support body 3 placed on the seat portion 11a of the vehicle seat 11 is attached to the outer surface of the first side plate 3j via a fixed bracket 39a.

The support mechanism 39 comprises a cylindrical portion 39b that opens downward and is attached to a fixed bracket 39a, and a thin rod-shaped support leg 39c, the tip of which is provided with an adjuster 39g that can adjust the length of the support leg 39c in the direction of the rod center line.

A notched recess 39e that opens to the lower end is formed in the lower half of the cylindrical portion 39b on the side of the first side plate 3j, and the width dimension of the notched recess 39e is set to be larger than the outer diameter of the support leg portion 39c.

A pair of guide holes 39f extending in the vertical direction are formed facing each other in the front and rear portions of the lower half of the cylindrical portion 39b. Note that the guide hole 39f located on the rear side of the vehicle is omitted for convenience.

The base end of the support leg 39c is slidably inserted into the cylindrical portion 39b from its opening side along the center line of the tube.

A pair of guide pins 39d that fit loosely into the guide holes 39f of the cylindrical portion 39b protrude from the side surface of the base end of the support leg 39c. For convenience, the illustration of the guide pins 39d that fit loosely into the guide holes 39f located on the rear side of the vehicle is omitted.

When the rod center line of the support leg 39c coincides with the tube center line of the tubular portion 39b, each guide pin 39d moves along each guide hole 39f, thereby guiding the sliding movement of the support leg 39c in the direction along the tube center line of the tubular portion 39b.

When each guide pin 39d is positioned at the lower end of each guide hole 39f, the cylindrical portion 39b supports rotation around each guide pin 39d toward the notched recess 39e of the support leg 39c.

In other words, when the mounting body 3 is not in use, the support legs 39c are folded by rotating around the guide pins 39d toward the notched recesses 39e, allowing the entire mounting body 3 to have a compact shape.

On the other hand, when the support leg 39c is slid upward relative to the cylindrical portion 39b with the rod center line of the support leg 39c coinciding with the cylinder center line of the cylindrical portion 39b, the base end portion fits inside the cylindrical portion 39b and cannot rotate around each guide pin 39d, so that the position of the support body 3 placed on the seat portion 11a of the vehicle seat 11 can be stabilized by bringing the adjuster 39g into contact with the vehicle floor 12.

A positioning mechanism 38 is provided on the right edge of the mounting plate 31 in the vehicle width direction to position the mounting body 3 on the seat portion 11a.

The positioning mechanism 38 includes a first plate 38a in the shape of a strip fixed to the underside of the mounting plate 31, a second plate 38b in the shape of a strip placed on the upper surface of the first plate 38a, a third plate 38c in the shape of an L in side view fixed to the upper surface of the second plate 38b, and two fasteners 38d in the shape of a T in side view consisting of a screw portion 38h and a handle portion 38i.

The first plate 38a has a pair of screw holes 38e formed at a predetermined distance in the fore-and-aft direction of the vehicle into which the screw portion 38h of the fastener 38d can be screwed.

The second plate 38b is formed with a pair of position adjustment slots 38f that extend in the vehicle width direction at a predetermined distance in the vehicle front-rear direction, and each position adjustment slot 38f is located in a position that corresponds to each screw hole 38e in the first plate 38a.

The third plate 38c protrudes to the left in the vehicle width direction and then extends downward, with its lower end portion positioned lower than the first plate 38a.

Each fastener 38d is screwed into the screw hole 38e of the first plate 38a with the screw portion 38h inserted into the position adjustment long hole 38f of the second plate 38b. By grasping the handle portion 38i and rotating it forward to screw the screw portion 38h into the screw hole 38e, the second plate 38b and the third plate 38c are sandwiched between the first plate 38a and the handle portion 38i, and the second plate 38b and the third plate 38c can be fixed to the first plate 38a.

On the other hand, when the handle portion 38i is rotated in the reverse direction to screw the screw portion 39h back into the screw hole 38e, the second plate 38b and the third plate 38c are released from the first plate 38a. The second plate 38b is then moved in the vehicle width direction relative to the first plate 38a within the longitudinal range of the position adjustment long hole 38f, and the handle portion 38i is rotated forward to fix the second plate 38b and the third plate 38c to the first plate 38a, thereby adjusting the position of the third plate 38c in the vehicle width direction. Therefore, by adjusting the distance between the first side plate 3j and the third plate 38c to correspond to the width dimension of the seat portion 11a of the vehicle seat 11, it is possible to prevent the position of the support body 3 from shifting relative to the seat portion 11a.

In the vehicle boarding/alighting device 1 in the third embodiment, the movement of the seat 22 when the wheelchair user H1 gets on or off the vehicle 10 is the same as that in the second embodiment, except that, as shown in Figs. 22 to 24, the seat 22 is guided by the third guide frame 3d on the mounting body 3, and when the seat 22 is moved between the support body 26 and the guide rail 4, the guide rail 4 is rotated around the first connecting pin 24b relative to the support body 26 so that one end side of the first guide frame 26j and one end side of the second guide frame 4k are aligned in a straight line, while when the seat 22 is moved between the mounting body 3 and the guide rail 4, the guide rail 4 is rotated around the second connecting pin 3g relative to the mounting body 3 so that one end side of the third guide frame 3d and the other end side of the second guide frame 4k are aligned in a straight line.

As described above, according to the third embodiment of the present invention, not only can the same effects as those of the second embodiment be obtained, but also when the mounting body 3 is placed on the seat portion 11a of the vehicle seat 11, the seat portion 11a can be sandwiched between the first side plate 3j and the third plate 38c of the mounting body 3, so that the position of the mounting body 3 on the seat portion 11a is stable, improving the riding comfort when riding. In addition, because the mounting state of the mounting body 3 on the seat portion 11a is stable, it is possible to further facilitate the connection of the guide rail 4 to the mounting body 3.

In addition, when the mounting body 3 is placed on the seat 11a of the vehicle seat 11, the support legs 39c of the support mechanism 39 are brought into contact with the vehicle floor 12, so that the posture of the mounting body 3 relative to the seat 11a is stable. Therefore, when the wheelchair user H1 gets on and off, the mounting body 3 placed on the seat 11a does not sink into the seat 11a, and the wheelchair user H1 can get on and off smoothly.

In the first embodiment of the present invention, the slider 28 is provided with a first roller 28g, but if the slider 28 is configured to be able to slide along the guide rail 4, the first roller 28g may be omitted.

In addition, in the first embodiment of the present invention, two guide grooves 4d are provided on the guide rail 4, but this is not limited thereto, and the structure may include only one guide groove 4d, or may include three or more guide grooves 4d.

In addition, in the first embodiment of the present invention, a hydraulic cylinder 21d is used as a mechanism for raising and lowering the support 26, but this is not limited thereto. For example, a structure may be used in which an electric motor and a rack-and-pinion mechanism are combined to raise and lower the support 26.

In addition, in the second embodiment of the present invention, the first bearing frame 26k, the second bearing frame 4w, and the third bearing frame 3a are each provided with two rows, but this is not limited thereto, and the number of rows may be increased.

In addition, in the second embodiment of the present invention, both sides of the first slit 26n are open, but it is sufficient that at least one side is open depending on the direction in which the passenger boards the vehicle 10.

In addition, in the second embodiment of the present invention, the movement restriction frame 29 is positioned on the base plate 24 to the left of the wheelchair user H1, but the movement restriction frame 29 may be appropriately moved to the left or right depending on the direction in which the user boards the vehicle 10. Furthermore, the movement restriction frame 29 may be omitted by restricting the movement of the seat 22 by limiting the formation area of the first slit 26n to the middle of the longitudinal direction of the first guide frame 26j.

In the third embodiment of the present invention, the first guide frame 26j has a U-shaped extension in a plan view, the second guide frame 4k has a linear extension in a plan view, and the third guide frame 3d has an L-shaped extension in a plan view, but these shapes may be modified as appropriate.

Similarly, the structure and arrangement of the first fastener 3h, the second fastener 3i, the positioning mechanism 38, the support mechanism 39, and other components can be changed as appropriate. For example, the positioning mechanism 38 in embodiment 3 includes the second plate 38b, but the second plate 38b can be omitted by adjusting the thickness of the first plate 38a and the third plate 38c so that the screw portion 38h does not protrude from the lower surface of the first plate 38a.

The present invention is suitable for a vehicle boarding and alighting device used by wheelchair users when getting on and off a vehicle.

REFERENCE SIGNS LIST 1 vehicle boarding/alighting device 2 wheelchair 3 support body 3a third bearing frame 3b third free ball bearing 4 guide rail 4d guide groove 4k second guide frame 4m second free ball bearing 4v second slit 4w second bearing frame 10 vehicle 21 main body frame 22 seat 26 support body 26j first guide frame 26k first bearing frame 26n first slit 26r first free ball bearing 27 seat body 27c engagement portion 28 slider 28g first roller 28h second roller C1 rotation axis C2 rotation axis H1 wheelchair user

Claims (3)

A wheelchair having a main body frame to which a plurality of wheels are attached, a seat on which a user can sit, and a support body attached to the main body frame and removably supporting the seat;
A seat body configured to be placed on a seat portion of a vehicle seat installed inside the vehicle and capable of supporting the seat;
a guide rail having one end connectable to the support and the other end connectable to the mounting body , and capable of guiding movement of the seat between the support and the mounting body;
The seat includes a seat body on which a user sits, and a slider that is provided under the seat body, supports the seat body rotatably around a rotation axis extending in a vertical direction, and is slidable on the guide rail;
The guide rail includes a guide groove that extends linearly from one end to the other end of the guide rail and has a concave cross section,
The slider includes a first roller that is capable of rolling in the guide groove and is aligned linearly in a rolling direction,
A vehicle boarding/alighting device, characterized in that a second roller capable of rolling along the rotation axis of the first roller is provided at one end of the slider in the direction of the rotation axis of the first roller . The vehicle getting on/off device according to claim 1,
A vehicle boarding/alighting device, wherein the support body is configured to be able to rise and fall relative to the main body frame. The vehicle getting on/off device according to claim 1 or 2,
A vehicle boarding/alighting device, wherein the support body is configured to be rotatable about a rotation axis extending in a vertical direction relative to the main body frame.