JP6988654B2 - Vehicle wheelchair storage device - Google Patents

Description

The present invention relates to a wheelchair storage device for a vehicle that stores a folded wheelchair in a wheelchair storage position in a vehicle interior.

Patent Document 1 describes a technique relating to a wheelchair storage device for a vehicle. As shown in FIG. 17, the wheelchair storage device of Patent Document 1 has a wheelchair holding portion 100 in which a folded wheelchair K is set and a wheelchair holding portion 100 between the wheelchair setting position outside the vehicle interior and the wheelchair storage position inside the vehicle interior. It is equipped with a moving mechanism (not shown) that can be moved by. The wheelchair holding portion 100 is configured to be able to set the wheelchair K in a state where the front wheel Tf is facing up at the wheelchair setting position.

The wheelchair holding portion 100 includes a beam portion 102 in the center. Front wheel support plates 103 that support the left and right front wheels Tf of the wheelchair K are provided on the left and right sides of the upper part (front part) of the beam portion 102, and the left and right rear wheels Tb are provided on the left and right sides of the lower part (rear part). A rear wheel support plate 105 for supporting the wheelchair is provided. Further, between the left and right front wheel support plates 103 of the wheelchair holding portion 100, a support bar 104 on which the front wheel support frame F of the wheelchair K is hung from above is horizontally provided.

Japanese Unexamined Patent Publication No. 2017-20264

In the wheelchair storage device of the vehicle described above, the wheelchair holding portion 100 includes a front wheel support plate 103 and a rear wheel support plate 105, and is configured to support the left and right front wheels Tf and the left and right rear wheels Tb of the wheelchair K. Therefore, the total length of the wheelchair holding portion 100 becomes a value close to the front-rear length of the wheelchair K, and the wheelchair holding portion 100 becomes large. Therefore, it is necessary to secure a large storage space for the wheelchair holder in the vehicle interior.

The present invention has been made to solve the above problems, and the problem to be solved by the present invention is to make the wheelchair holder sufficiently smaller than the wheelchair and to make the storage space of the wheelchair holder compact. That is.

The above-mentioned problems are solved by each invention. The first invention is a support for supporting a wheelchair holder in which a wheelchair is set and a wheelchair holder so that the wheelchair holder can move between a wheelchair set position outside the vehicle interior and a wheelchair storage position in the vehicle interior. A wheelchair storage device for a vehicle having a mechanism, wherein the wheelchair holding portion has a fulcrum supporting an intermediate position between the front wheel and the rear wheel in a frame connecting the front wheel and the rear wheel of the wheelchair, and the fulcrum as a center. It has a rotation stop portion that can be connected to the end portion of the wheelchair in the front-rear direction so that the rotational moment caused by the center of gravity of the wheelchair can be received at a position opposite to the center of gravity with respect to the fulcrum. ..

According to the present invention, the wheelchair is supported by a fulcrum of the wheelchair holding portion and a rotation stopper. Further, the fulcrum of the wheelchair holding portion and the rotation stop portion are located at positions away from the center of gravity of the wheelchair, and the center of gravity portion of the wheelchair is not directly supported by the wheelchair holding portion. That is, the wheelchair holding portion does not directly support the center of gravity portion of the wheelchair, but supports the portion other than the center of gravity by the fulcrum and the rotation stop portion. Therefore, the size of the wheelchair holding portion may be a size that supports a part of the wheelchair, and can be sufficiently smaller than the total length of the wheelchair.
The fulcrum of the wheelchair holding portion is configured to support a frame connecting the front and rear wheels of the wheelchair. Therefore, the fulcrum of the wheelchair holding portion can satisfactorily support the position away from the center of gravity of the wheelchair.

According to the second invention , the rotation stop portion of the wheelchair holder is located so that either the front wheel or the rear wheel of the wheelchair can be connected to the wheelchair holder or in the vicinity of the one wheel. The frame is configured to be connected to the wheelchair holder. That is, when the center of gravity of the wheelchair is on the rear wheel side, the rotation stop portion of the wheelchair holding portion connects the front wheel or a frame in the vicinity thereof to the wheelchair holding portion to receive a rotational moment caused by the center of gravity of the wheelchair. Can be done. Further, when the center of gravity of the wheelchair is on the front wheel side, the rotation moment can be received by connecting the rear wheel or a frame in the vicinity thereof to the wheelchair holding portion by the rotation stop portion of the wheelchair holding portion.

According to the third invention , when the wheelchair is set in the wheelchair holding portion and a force is applied to the wheelchair to move the wheelchair holding portion from the wheelchair set position to the wheelchair storage position by the support mechanism, the wheelchair The wheelchair holding portion is provided with a holding portion for holding the wheelchair so as not to separate from the fulcrum of the wheelchair holding portion. Therefore, even if a force is applied to the wheelchair, the wheelchair does not separate from the fulcrum of the wheelchair holding portion, and the wheelchair and the wheelchair holding portion can be moved integrally.

According to the present invention, the wheelchair holder can be made sufficiently smaller than the wheelchair, and the storage space of the wheelchair holder can be made compact.

It is a side view which shows the wheelchair set position of the wheelchair storage device which concerns on Embodiment 1 of this invention. It is a side view which shows the wheelchair lifting position of the wheelchair storage device. It is the whole perspective view which looked at the wheelchair storage device from the rear of a vehicle. It is a perspective view which looked at the wheelchair holding plate, the slide board, and the rotary table of the wheelchair storage device from the room side (front). FIG. 3 is a plan view of the wheelchair holding plate, a slide substrate, and a rotary table. It is a side view which shows the locked state of the slide lock mechanism. It is a side view which shows the unlocked state of the slide lock mechanism. It is a side view (wheelchair set position) which shows the vertical rotation operation of the wheelchair holding plate with respect to the slide substrate of the wheelchair storage device. It is a side view (IX enlarged view of FIG. 8) which shows the rotation regulation mechanism between the slide board and a wheelchair holding plate. It is a side view (wheelchair lifting position) which shows the vertical rotation operation of the wheelchair holding plate with respect to the slide substrate of the wheelchair storage device. It is a side view (XI enlarged view of FIG. 10) which shows the rotation regulation mechanism. It is a side view of the regulation release state of the rotation regulation mechanism. It is a perspective view of the rotation regulation mechanism. It is a perspective view which looked at the unlocked state of the front wheel lock mechanism in the wheelchair holding plate from the rear of a vehicle. It is a side view which shows the unlocked state of a front wheel lock mechanism. It is a side view which shows the locked state of the front wheel lock mechanism. It is a perspective view which shows the wheelchair holding part of the conventional wheelchair storage device.

[Embodiment 1]
Hereinafter, the wheelchair storage device for the vehicle according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 16. As shown in FIGS. 1 and 2, the wheelchair storage device 30 of the vehicle 10 according to the present embodiment lifts the wheelchair 20 in the folded state to the height of the vehicle interior of the vehicle 10, and lifts the wheelchair 20 to the height of the vehicle interior of the vehicle 10 from the rear door opening 12 to the vehicle interior. It is a device for storing in the wheelchair storage position. Here, the front-rear, left-right, and up-down shown in the figure correspond to the front-back, left-right, and up-down of the vehicle 10 provided with the wheelchair storage device 30.

<Overview of wheelchair storage device 30>
As shown in FIG. 3, the wheelchair storage device 30 can be horizontally rotated on a fixed base 33 installed near the rear door opening 12 in the vehicle interior and on the fixed base 33 via a rotation mechanism (not shown). A rotary table 34 installed in a state, a slide substrate 36 installed on the rotary table 34 via a slide mechanism 35, and a wheelchair holding plate 50 connected to the slide substrate 36 in a vertically rotatable state. It is equipped with. As shown in FIG. 3, the fixed base 33 has a cross beam portion 33w extending in the vehicle width direction along the rear door opening 12 and a vertical beam portion fixed to the upper surface of the left end portion of the cross beam portion 33w and extending to the front of the vehicle. It is formed in a substantially flat L-shape from 33y. The tip portion 33f (front end portion) of the vertical beam portion 33y of the fixed base 33 is bolted to the vehicle body. In this state, the upper surface 33u of the vertical beam portion 33y of the fixed base 33 is held substantially horizontally. A rotation mechanism (not shown) that supports the rotary table 34 so as to be horizontally rotatable is installed on the upper surface 33u of the vertical beam portion 33y of the fixed base 33. Further, a right rotation stopper 34s of the rotary table 34 is provided on the upper surface 33u of the vertical beam portion 33y (see FIG. 3).

<About the rotary table 34>
As shown in FIGS. 3 and 4, the rotary table 34 includes a disk portion 34e arranged coaxially with the rotation mechanism and a rectangular strip portion 34p protruding radially outward from the disk portion 34e. It is composed of. A pair of slide rails 35r and a slide stopper 35s of the slide mechanism 35 are provided on the rotary table 34. The pair of slide rails 35r extend from the protruding end portion of the strip portion 34p toward the disc portion 34e along the edge in the width direction of the strip portion 34p, and the circle thereof crosses the disc portion 34e. It extends linearly to the end of the plate portion 34e. Then, the slide stopper 35s is fixed between the pair of slide rails 35r located at the end of the disk portion 34e of the rotary table 34.

The slide mechanism 35 includes a plurality of sliders 35y fitted in each slide rail 35r in a state of being slidable along the slide rail 35r. Then, as shown in FIG. 4 and the like, the plurality of sliders 35y are diagonally fixed to the left front corner portion of the lower surface of the slide substrate 36 formed in a substantially square plane. As a result, the slide substrate 36 can slide along the pair of slide rails 35r. Here, as shown in FIGS. 3 and 4, in a state where the rotary table 34 is horizontally rotated to the right rotation limit position, the strip portion 34p of the rotary table 34 comes into contact with the right rotation stopper 34s, and the rotary table 34 is in contact with the right rotation stopper 34s. The right horizontal rotation of 34 is prohibited. In this state, the tips of the pair of slide rails 35r at the protruding ends of the strip portion 34p of the rotary table 34 are arranged near the central portion of the rear door opening 12 of the vehicle 10. The pair of slide rails 35r extends diagonally from the vicinity of the center of the rear door opening 12 of the vehicle 10 toward the left front of the vehicle interior, and the pair of slides at the end of the disk portion 34e of the rotary table 34. The base end portion of the rail 35r is arranged near the left wall portion of the passenger compartment.

<About slide board 36>
As shown in FIG. 4, the slide substrate 36 is a substantially square plate that supports the wheelchair holding plate 50 (described later) in a vertically rotatable state. The slide board 36 is arranged so that the front side and the rear side of the slide board 36 extend in the vehicle width direction and the left side and the right side extend in the vehicle front-rear direction while the rotary table 34 is in the right rotation limit position. Will be done. That is, with the rotary table 34 in the right rotation limit position, the slide substrate 36 can slide diagonally along the pair of slide rails 35r in a posture in which the front-rear and left-right directions coincide with the front-back and left-right directions of the vehicle 10. become.

As shown in FIG. 4, the slide substrate 36 has a flat inverted triangular left wall portion 36f formed on the left side and a wall-shaped right wall portion 36r formed on the right side. A left bearing portion 36j is formed at the lower rear end position on the left wall portion 36f of the slide substrate 36, and a right bearing portion (figure number omitted) is formed at the rear end position on the right wall portion 36r of the slide substrate 36. ) Is formed. The left bearing portion 36j and the right bearing portion (drawing number omitted) of the slide substrate 36 are coaxially positioned at the same height position, and the wheelchair holding plate 50 is placed on the left bearing portion 36j and the right bearing portion (drawing number omitted). The rotation center axis 50c of the above is rotatably supported. As a result, the wheelchair holding plate 50 is connected to the slide substrate 36 in a state of being vertically rotatable about the rotation center axis 50c. Here, with the rotary table 34 in the right rotation limit position, the rotation center axis 50c of the wheelchair holding plate 50 supported by the left bearing portion 36j and the right bearing portion (not shown) of the slide substrate 36 is a vehicle. Arranged so as to extend in the width direction. As a result, the wheelchair holding plate 50 is held parallel to the rear door opening 12 of the vehicle 10.

<About the slide lock mechanism 40>
As shown in FIGS. 4 and 5, a notch 36k is formed in the left front corner of the slide substrate 36 so as to extend in the slide direction between the sliders 35y of the slide mechanism 35. The hook 43 of the slide lock mechanism 40 is arranged at the position of the cutout portion 36k of the slide substrate 36. The slide lock mechanism 40 is a mechanism that prohibits the slide substrate 36 from sliding with respect to the rotary table 34. In the slide lock mechanism 40, with the rotary table 34 in the right rotation limit position, the slide substrate 36 slides to the vicinity of the center portion (rear end position) of the rear door opening 12 and holds the wheelchair with respect to the slide substrate 36. When the plate 50 rotates up and down, it becomes a slide lock state.

As shown in FIGS. 4 and 5, the slide lock mechanism 40 includes a vertical wall-shaped hook support portion 41 provided so as to extend in the slide direction at the position of the cutout portion 36k of the slide substrate 36, and the hook support portion 41 thereof. It is provided with a hook 43 that is overlapped with the hook 43 and connected so as to be rotatable up and down. As shown in FIGS. 6 and 7, the hook 43 is provided with a hook-shaped engaging portion 43k at the tip end portion and a load receiving portion 43z at the base end portion. Then, the position near the base end portion of the hook 43 is connected to the hook support portion 41 of the slide substrate 36 in a state where it can rotate up and down by the rotation center pin 41p. As a result, the hook 43 rotates in the downward direction (rotates to the right in FIG. 6) due to its own weight. Further, when the load receiving portion 43z at the base end portion of the hook 43 is pressed downward by an external force, the hook 43 rotates upward (rotates counterclockwise in FIG. 6) against its own weight.

As shown in FIGS. 5 and 6, the slide lock mechanism 40 includes a square elongated hole 45 formed between a pair of slide rails 35r at the protruding end of the strip portion 34p of the rotary table 34. The square slot 45 is formed so as to extend along the slide rail 35r, and the hook 43 is engaged with the leading edge portion (the left edge portion in FIGS. 5 to 7) of the square slot 45 in the length direction. An engaged portion 45e is formed in which the portion 43k is hooked from above and behind. Further, the slide lock mechanism 40 presses the load receiving portion 43z of the hook 43 downward, and as shown in FIG. 7, causes the hook 43 to rotate upward (rotate counterclockwise in FIG. 7) against its own weight. It is provided with a protrusion 47 for unlocking.

As shown in FIG. 4, the unlocking protrusion 47 is formed in a substantially gate shape and is attached to a predetermined position on the back side of the wheelchair holding plate 50. Then, as shown in FIGS. 6 and 7, the wheelchair holding plate 50 is rotated counterclockwise (upwardly) to a position where it is placed on the slide substrate 36 (described later) to unlock the back side of the wheelchair holding plate 50. The protrusion 47 presses the load receiving portion 43z of the hook 43 downward. As a result, the hook 43 rotates upward (rotates counterclockwise in FIG. 7) against its own weight, and the engaging portion 43k of the hook 43 is held in a state of being disengaged from the engaged portion 45e of the rotary table 34.

That is, when the wheelchair holding plate 50 is placed on the slide substrate 36, the slide substrate 36 is slidably held with respect to the rotary table 34 as shown in FIG. 7. However, when the wheelchair holding plate 50 starts to rotate clockwise (downward) with respect to the slide board 36 as shown in FIG. 6 in a state where the slide board 36 slides to the tip of the slide rail 35r, the wheelchair holding plate The unlocking protrusion 47 of the 50 is separated from the load receiving portion 43z of the hook 43. As a result, the hook 43 rotates downward (rotates to the right) under its own weight, and the engaging portion 43k of the hook 43 is hung on the engaged portion 45e of the rotary table 34. As a result, the slide substrate 36 is prohibited from sliding forward from the rear end position.

<Overview of wheelchair holding plate 50>
As shown in FIGS. 1 and 2, the wheelchair holding plate 50 fixes the left and right front wheels 22 of the wheelchair 20 folded in the width direction, and further, the frame tip lower portion 21 at the front end position and the frame located behind the front wheel 22. It is a plate that holds the wheelchair 20 by supporting the central portion 23. Here, since the center of gravity G of the wheelchair 20 is near the center of the rear wheel 27, the frame central portion 23, the front wheel 22 and the like of the wheelchair 20 are located on the front side of the center of gravity G. Therefore, the wheelchair holding plate 50 supports the front side of the center of gravity G of the wheelchair 20. Further, as shown in FIGS. 1, 3 and the like, the wheelchair holding plate 50 is configured so that the wheelchair 20 can be set in an upright position. Therefore, the position where the wheelchair holding plate 50 stands up is referred to as the wheelchair set position of the wheelchair storage device 30.

Then, the wheelchair holding plate 50 in which the wheelchair 20 is set is rotated counterclockwise (upward) with respect to the slide substrate 36 from the wheelchair set position, and is lifted to a position where it can be placed on the slide substrate 36 as shown in FIG. be able to. The position where the wheelchair holding plate 50 is placed on the slide substrate 36 and held substantially horizontally in this way is referred to as a wheelchair lifting position. Here, in the wheelchair lifting position, as shown in FIG. 2, the wheelchair holding plate 50 supports the frame center portion 23 of the wheelchair 20 with the frame center support portion 55 of the wheelchair holding plate 50 as a fulcrum. Further, the rotational moment caused by the center of gravity G of the wheelchair 20 about the fulcrum can be received by the front wheel locking mechanism 70 (described later) of the wheelchair holding plate 50 to which the front wheel 22 of the wheelchair 20 is connected.

As shown in FIGS. 3 and 4, the wheelchair holding plate 50 includes a plate main body 51 and a plate support 53 that is vertically rotatably connected to the slide substrate 36 on the back side of the plate main body 51. .. As shown in FIG. 3, the plate main body 51 has a substantially square front wheel support portion 510 and a substantially square shape on the upper center of the front wheel support portion 510 in a state of being recessed with respect to the front wheel support portion 510. It is composed of a narrow frame tip support portion 514 formed in the above. A rectangular front wheel insertion portion 512 in which a part of the front wheel 22 of the wheelchair 20 is vertically fitted is formed on both left and right sides of the front wheel support portion 510 of the plate main body portion 51. The frame tip support portion 514 is formed so that the front wheel 22 of the wheelchair 20 is in contact with the frame tip lower portion 21 of the wheelchair 20 in a state of being fitted to the front wheel insertion portion 512 of the front wheel support portion 510. Then, as shown in FIG. 4, on the back side of the frame tip support portion 514 of the plate main body portion 51, the unlocking protrusion 47 of the slide lock mechanism 40 described above is fixed at the position of the lower left corner portion.

As shown in FIG. 4, a pair of left and right plate support portions 53 are fixed to the back side of the front wheel support portion 510 of the plate main body portion 51 at the inner positions in the width direction of the left and right front wheel insertion portions 512. The plate support portion 53 is formed in a substantially equilateral triangle, and a portion corresponding to one side of the triangle is fixed to the back side of the front wheel support portion 510 via a flange portion by welding or the like. Then, the above-mentioned rotation center axis 50c is passed at a right angle and fixed to the protruding portion corresponding to the apex of the triangle in the left and right plate support portions 53. As shown in FIG. 4, the left and right plate support portions 53 are sandwiched between the left wall portion 36f and the right wall portion 36r of the slide substrate 36. Then, the left end portion and the right end portion of the rotation center shaft 50c protruding from the left and right plate support portions 53 are rotatable to the left bearing portion 36j and the right bearing portion (figure number omitted) of the slide substrate 36 as described above. Is supported by.

As shown in FIG. 4, a leg plate 516 is provided on the back side of the plate main body 51 at the upper center position of the front wheel support 510. As shown in FIG. 7, the leg plate 516 abuts on the surface of the slide substrate 36 when the wheelchair holding plate 50 rotates upward and is placed on the slide substrate 36, so that the wheelchair holding plate 50 is substantially horizontal. To support. Further, on the front side of the plate main body 51, as shown in FIGS. 1 to 3, a frame center support portion 55 that supports the frame center portion 23 of the wheelchair 20 is provided at the front wheel support portion 510 at the center position of the lower end of the front wheel support portion 510. It is provided so as to project at a right angle to the wheelchair. As shown in FIG. 3, the frame center support portion 55 includes a support portion 55s provided at a right angle to the front wheel support portion 510 and a frame center portion 23 of the wheelchair 20 extending in the left-right direction at the tip of the support portion 55s. It is formed in a substantially T shape from the receiving frame receiving bar 55u. The frame center support portion 55 is configured to be rotated and folded to a position substantially overlapping with the plate main body portion 51.

<About rotation regulation mechanism 60>
As shown in FIG. 4, a rotation control mechanism 60 is provided between the left wall portion 36f of the slide substrate 36 and the plate support portion 53 on the left side of the wheelchair holding plate 50. The rotation control mechanism 60 prohibits reversal when the wheelchair holding plate 50 rotates counterclockwise (upward) with respect to the slide substrate 36 from the wheelchair setting position (see FIG. 1) to the wheelchair lifting position (see FIG. 2). It is a mechanism. As shown in FIGS. 8 and 9, the rotation regulating mechanism 60 includes a fixed gear 63 having ratchet teeth 63w and a ratchet claw 65 hung on the ratchet teeth 63w of the fixed gear 63. The fixed gear 63 is coaxially and non-rotatably connected to the left end of the rotation center shaft 50c of the wheelchair holding plate 50 (plate support portion 53). Therefore, when the wheelchair holding plate 50 rotates around the axis of the rotation center shaft 50c with respect to the slide substrate 36, the fixed gear 63 also rotates integrally with the wheelchair holding plate 50.

A large number of ratchet teeth 63w are formed on the outer peripheral edge of the fixed gear 63 within a range of about 180 °. Here, as shown in FIGS. 8 to 10, the angle representing the formation range of the ratchet teeth 63w centered on the rotation center axis 50c represents the formation range of the wheelchair holding plate 50 centered on the rotation center axis 50c. It is set larger than the angle. The fixed gear 63 is fixed to the left end of the rotation center shaft 50c so that the formation range of the ratchet teeth 63w overlaps with the plate support portion 53 of the wheelchair holding plate 50 in the axial direction of the rotation center shaft 50c. Further, on the back surface of the fixed gear 63 (the surface facing the plate support portion 53), as shown in FIG. 13, a gear bar 63h protruding radially outward from the outer peripheral edge of the fixed gear 63 is provided. .. The gear bar 63h is positioned at the center of the formation range of the ratchet teeth 63w in the circumferential direction.

The ratchet claw 65 of the rotation regulation mechanism 60 is a claw that allows left rotation of the fixed gear 63 (ratchet tooth 63w) and prohibits right rotation in FIG. 9. As shown in FIGS. 4, 8 and the like, the ratchet claw 65 is rotatable along the left wall portion 36f at the upper rear end position of the left wall portion 36f of the slide substrate 36 via the claw center axis 65p. It is attached to. As shown in FIG. 9, the ratchet claw 65 has a disc portion 65 m that rotates around the axis of the claw center axis 65 p, and a claw body portion 65 t that protrudes in a beak shape from the outer peripheral surface of the disc portion 65 m. I have. When the claw body portion 65t of the ratchet claw 65 is on the front side (left side in FIG. 9) with respect to the axis of the claw center axis 65p, the ratchet claw 65 rotates counterclockwise by its own weight. As a result, the ratchet claw 65 is held at an engaging position (left rotation limit position) where the tip of the claw body 65t engages with the ratchet tooth 63w of the fixed gear 63 by its own weight.

When the ratchet claw 65 is in the engaging position (left rotation limit position), as shown in FIG. 9, the tip of the claw body 65t of the ratchet claw 65 is above the rotation center of the fixed gear 63 and the ratchet tooth 63w. Is engaged in. As a result, when the fixed gear 63 rotates counterclockwise, the ratchet teeth 63w easily push up the claw body 65t of the ratchet claw 65, so that the claw body 65t of the ratchet claw 65 comes off from the ratchet teeth 63w and is fixed. Left rotation of the gear 63 is allowed. On the other hand, when the fixed gear 63 tries to rotate to the right, the ratchet teeth 63w try to push down the claw body 65t of the ratchet claw 65 from above. 65t bites in, and right rotation of the fixed gear 63 is prohibited.

The ratchet claw 65 is provided with a rear handle 65h at a position opposite to the claw main body portion 65t and the claw center shaft 65p. Then, as shown in FIG. 12, by holding the rear handle 65h and rotating the ratchet claw 65 clockwise around the claw center axis 65p, the ratchet claw 65 has a claw body portion 65t and the fixed gear 63 has a ratchet tooth 63w. Can be disengaged. Here, when the claw body portion 65t of the ratchet claw 65 is on the rear side (right side in FIG. 12) with respect to the axis of the claw center axis 65p, the ratchet claw 65 rotates clockwise under its own weight. Therefore, in a state where the ratchet claw 65 is rotated clockwise to release the engagement with the fixed gear 63, the ratchet claw 65 has its own weight and the rotation stopper 65s of the rear handle 65h is attached to the left wall portion 36f of the slide substrate 36. On the other hand, it is held at the deregulation release position (right rotation limit position) that abuts from the lower side.

A ring-shaped receiving portion 65e is provided between the claw main body portion 65t and the rear handle 65h on the outer periphery of the disc portion 65m of the ratchet claw 65. As shown in FIG. 12, the receiving portion 65e is a gear of a fixed gear 63 that rotates clockwise (downward rotation) together with the wheelchair holding plate 50 in a state where the ratchet claw 65 is in the regulation release position (right rotation limit position). It is positioned at a position where the bar 63h abuts. As a result, when the wheelchair holding plate 50 rotates clockwise (downward) to the wheelchair set position (see FIG. 1) with respect to the slide substrate 36, the gear bar 63h of the fixed gear 63 becomes the receiving portion 65e of the ratchet claw 65. Contact. As a result, the ratchet claw 65 rotates counterclockwise from the regulation release position (right rotation limit position) and is held at the engaging position by its own weight.

<About the front wheel lock mechanism 70>
The wheelchair holding plate 50 is provided with a front wheel lock mechanism 70 that connects the left and right front wheels 22 of the wheelchair 20 to the front wheel support portion 510 of the plate main body 51 at the wheelchair set position (see FIG. 1). As shown in FIG. 1, the front wheel lock mechanism 70 has a plate main body portion 51 (front wheel support portion) with a part of the left and right front wheels 22 in a state where the wheelchair 20 is erected with the left and right rear wheels 27 of the wheelchair 20 facing down. By the operation of inserting into the left and right front wheel insertion portions 512 of 510), the left and right front wheels 22 of the wheelchair 20 are connected to the plate main body portion 51 (front wheel support portion 510). Here, in the state where the wheelchair holding plate 50 is upright (wheelchair set position), the height dimension of the left and right front wheel insertion portions 512 from the road surface is substantially equal to the height dimension of the front wheel 22 of the upright wheelchair 20. Is set to. Therefore, when a part of the left and right front wheels 22 is inserted into the left and right front wheel insertion portions 512 of the wheelchair holding plate 50 (plate main body portion 51), it is not necessary to lift the wheelchair 20.

As shown in FIGS. 3, 4, and 14, the front wheel lock mechanism 70 includes a locking member 73 provided on the front side of the wheelchair holding plate 50 (plate main body 51), a spring material 75, and a plate main body. It is provided with a receiving member 77 provided on the back side of the 51. The locking member 73 is a member that connects the left and right front wheels 22 to the plate body 51 by pressing the left and right front wheels 22 of the wheelchair 20 from the opposite side of the front wheel insertion portion 512 of the plate body 51. The locking member 73 is fixed substantially horizontally to the arm portion 73a connected to the plate body portion 51 of the wheelchair holding plate 50 in a state of being rotatable up and down, and to the tip (rotatable free end) of the arm portion 73a. It is formed in a substantially T shape from the holding bar 73b.

As shown in FIGS. 3 and 14, on the front side of the plate body portion 51 (front wheel support portion 510) of the wheelchair holding plate 50, the base end portion of the arm portion 73a of the locking member 73 is sandwiched from the left-right direction and rotated up and down. An arm support portion 515 that movably supports is provided. The arm support portion 515 is provided so as to project from the surface of the plate main body portion 51 in a side mountain shape at an intermediate position between the left and right front wheel insertion portions 512. A bearing portion 515j (see FIG. 15) that rotatably supports the rotation center axis 73p of the arm portion 73a of the locking member 73 is provided at the top portion of the arm support portion 515.

As shown in FIG. 16, the bearing portion 515j of the arm support portion 515 of the plate main body portion 51 is located at a position substantially coaxial with the left and right front wheels 22 of the wheelchair 20 inserted into the left and right front wheel insertion portions 512 of the plate main body portion 51. It is provided in. Further, the dimension from the rotation center of the arm portion 73a of the locking member 73 to the tip of the arm portion 73a (the boundary portion with the holding bar 73b) is set to a value slightly larger than the radial dimension of the front wheel 22 of the wheelchair 20. .. Therefore, when the arm portion 73a of the locking member 73 rotates upward around the rotation center axis 73p (described later), the pressing bar 73b moves upward along the outer periphery of the left and right front wheels 22 as shown in FIG. Will move.

Then, in a state where the pressing bar 73b of the locking member 73 is in contact with the front wheel support portion 22s of the wheelchair 20, the pressing bar 73b presses the left and right front wheels 22 from the opposite sides of the left and right front wheel insertion portions 512. As a result, the left and right front wheels 22 are connected to the wheelchair holding plate 50 (plate body 51). That is, as shown in FIG. 16, a position where the holding bar 73b of the locking member 73 holds the left and right front wheels 22 of the wheelchair 20 from the opposite side of the left and right front wheel insertion portions 512 (positions where the holding bar 73b abuts on the front wheel supporting portion 22s of the wheelchair 20). ) Is the upper rotation limit position (lock position) of the locking member 73. Further, as shown in FIG. 15, the state in which the locking member 73 is in the lower rotation limit position is the unlocking position of the locking member 73.

The spring member 75 of the front wheel locking mechanism 70 is an urging means for holding the locking member 73 in the locked position or the unlocked position. The spring members 75 are used in pairs on the left and right, and one end of the spring members 75 is hung on fixed spring receivers 515y provided on the left and right upper side surfaces of the arm support portion 515, as shown in FIG. Further, the other end of the spring material 75 is hung on the movable spring receivers 73x provided on the left and right side surfaces of the arm portion 73a of the locking member 73. In the state where the locking member 73 is in the lower rotation limit position (unlocking position), as shown in FIG. 15, the spring material 75 is relative to the rotation center (bearing portion 515j) of the arm portion 73a of the locking member 73. It is located on the left side. Therefore, the spring force of the spring member 75 is applied to the arm portion 73a in the right rotation direction (plate body portion 51 side), and the locking member 73 is held at the lower rotation limit position (unlocked position). Will be done. Further, when the locking member 73 is pressed to the right in FIG. 15 by the receiving member 77 (described later) and the spring member 75 moves to the right with respect to the rotation center of the arm portion 73a of the locking member 73, the arm portion The 73a is rotated counterclockwise (upward) in the direction of the lock position by the spring force of the spring material 75.

As shown in FIG. 16, the receiving member 77 of the front wheel lock mechanism 70 rotates counterclockwise by being pressed forward by the left and right front wheels 22 of the wheelchair 20 inserted into the left and right front wheel insertion portions 512 of the plate body 51. It is a member that presses the locking member 73 at the unlocking position to the right (rearward). As shown in FIG. 4, the receiving member 77 is formed in a substantially T-shape with a square central plate 77c and a front wheel receiving bar 77b connected to the upper end position of the central plate 77c and extending in the left-right direction. The front wheel receiving bar 77b is a bar pressed by the left and right front wheels 22 of the wheelchair 20, and is provided so as to extend from the back side position of the front wheel insertion portion 512 on the left side to the back side position of the front wheel insertion portion 512 on the right side. The lower end of the central plate 77c of the receiving member 77 is sandwiched between the left and right bearing plates 517 provided in the center of the back surface of the wheelchair holding plate 50 (plate main body 51) and supported in a vertically rotatable state. .. That is, as shown in FIG. 15, the rotation center pin (not shown) provided at the lower end of the central plate 77c of the receiving member 77 is rotatable by the bearing portions 517j formed on the left and right bearing plates 517. It is supported.

As a result, when the left and right front wheels 22 of the wheelchair 20 are inserted into the left and right front wheel insertion portions 512 of the plate body 51, the front wheel receiving bars 77b of the receiving member 77 are pressed forward (leftward) by the left and right front wheels 22. , As shown in FIG. 16, the central plate 77c rotates counterclockwise around the bearing portion 517j. As shown in FIGS. 4 and 15, a curved rod-shaped pressing lever 77p is provided in the lower center of the central plate 77c of the receiving member 77 so as to project downward and rearward. The tip of the pressing lever 77p projects from the central opening (not shown) of the plate main body 51 to the front side of the plate main body 51. Then, as shown in FIG. 15, in a state where the front wheel receiving bar 77b of the receiving member 77 is not subjected to an external force, the tip portion of the pressing lever 77p is the locking member 73 in the lower rotation limit position (unlocking position). It is in contact with the back side. As a result, the front wheel receiving bar 77b of the receiving member 77 is pressed forward by the left and right front wheels 22 of the wheelchair 20, and the central plate 77c rotates counterclockwise around the bearing portion 517j. 77p presses the locking member 73 in the lower rotation limit position rearward (to the right). As a result, the spring material 75 moves to the right with respect to the rotation center of the arm portion 73a of the locking member 73, and the arm portion 73a rotates upward in the direction of the lock position by the spring force of the spring material 75.

<About the operation of the wheelchair storage device 30>
As shown in FIG. 1, a procedure for storing the wheelchair 20 in the vehicle interior of the vehicle 10 from the state where the wheelchair holding plate 50 of the wheelchair storage device 30 is in the wheelchair set position will be described. Here, in a state where the wheelchair holding plate 50 of the wheelchair storage device 30 is in the wheelchair set position, as shown in FIGS. 4 and 5, the rotary table 34 is held in the right rotation limit position, and the slide substrate 36 is paired. It is located at the tip of the slide rail 35r and near the center of the rear door opening 12 of the vehicle 10. Then, as shown in FIG. 6, the hook 43 of the slide lock mechanism 40 is hung on the engaged portion 45e of the rotary table 34 (square elongated hole 45), and the slide of the slide substrate 36 is prohibited. Further, as shown in FIGS. 8 and 9, the claw body portion 65t of the ratchet claw 65 is engaged with the ratchet teeth 63w of the fixed gear 63 of the rotation regulating mechanism 60 provided between the slide substrate 36 and the wheelchair holding plate 50. It fits.

Further, as shown in FIG. 14, the locking member 73 of the front wheel locking mechanism 70 of the wheelchair holding plate 50 is held at the lower rotation limit position (unlocking position) by the spring force of the spring material 75. In this state, as shown in FIG. 1, the wheelchair 20 folded with the left and right rear wheels 27 facing down is erected, and the left and right front wheels 22 of the wheelchair 20 are inserted into the left and right front wheel insertion portions of the wheelchair holding plate 50. Insert into 512. As a result, the front wheel receiving bar 77b of the receiving member 77 of the front wheel locking mechanism 70 is pressed forward by the left and right front wheels 22 of the wheelchair 20. As a result, as shown in FIG. 16, the central plate 77c of the receiving member 77 rotates counterclockwise around the bearing portion 517j, and the tip portion of the pressing lever 77p fixed to the central plate 77c is locked at the unlocked position. The member 73 is pressed backward (to the right).

As a result, the spring material 75 moves to the right with respect to the rotation center (bearing portion 515j) of the arm portion 73a of the locking member 73, and the arm portion 73a rotates upward in the direction of the lock position by the spring force of the spring material 75. do. Then, the pressing bar 73b fixed to the tip of the arm portion 73a moves upward along the outer circumferences of the left and right front wheels 22 and is hung on the front wheel support portion 22s of the wheelchair 20. As a result, the left and right front wheels 22 of the wheelchair 20 are connected to the wheelchair holding plate 50 by being pressed from the opposite side of the front wheel insertion portion 512 of the wheelchair holding plate 50 by the holding bar 73b of the locking member 73. Further, with the left and right front wheels 22 of the wheelchair 20 inserted into the left and right front wheel insertion portions 512 of the wheelchair holding plate 50, as shown in FIG. 1, the lower portion 21 of the frame tip of the wheelchair 20 is the frame tip of the wheelchair holding plate 50. It abuts on the support portion 514. Further, the frame central portion 23 of the wheelchair 20 comes into contact with the frame receiving bar 55u of the frame central support portion 55 of the wheelchair holding plate 50.

In this state, by applying a lifting force to the wheelchair 20, the wheelchair holding plate 50 rotates upward (rotates to the left in FIG. 1) about the rotation center axis 50c with respect to the slide substrate 36. Here, since the lower portion 21 of the frame tip of the wheelchair 20 is in contact with the frame tip support portion 514 of the wheelchair holding plate 50, even if a lifting force (see the white arrow) is applied to the wheelchair 20, the wheelchair 20 alone It does not rotate upward around the front wheel 22 with respect to the wheelchair holding plate 50. That is, the wheelchair 20 rotates upward integrally with the wheelchair holding plate 50 in a state where the three points of the lower tip portion 21, the front wheel 22, and the central portion 23 of the frame are supported by the wheelchair holding plate 50.

Further, when the wheelchair holding plate 50 rotates upward with respect to the slide substrate 36 about the rotation center axis 50c, the fixed gear 63 of the rotation regulating mechanism 60 is integrated with the wheelchair holding plate 50 so as to rotate counterclockwise in FIG. become. Therefore, even if the ratchet main body 65t of the ratchet claw 65 is engaged with the ratchet tooth 63w of the fixed gear 63 of the rotation regulation mechanism 60, the ratchet tooth 63w pushes up the ratchet claw 65 to push up the ratchet claw 65, so that the wheelchair holding plate 50 Left rotation of (fixed gear 63) is allowed. However, even if the lifting force of the wheelchair 20 is released in the middle, the wheelchair holding plate 50 does not rotate downward because the rotation regulating mechanism 60 prohibits the fixed gear 63 from rotating to the right. Held in position.

Then, as shown in FIG. 2, when the wheelchair holding plate 50 rotates upward to the wheelchair lifting position, the leg plate 516 of the wheelchair holding plate 50 comes into contact with the surface of the slide substrate 36 as shown in FIG. , The wheelchair holding plate 50 is placed on the slide substrate 36 in a substantially horizontal state. Then, when the wheelchair holding plate 50 is placed on the slide substrate 36, the unlocking protrusion 47 on the back side of the wheelchair holding plate 50 presses the load receiving portion 43z of the hook 43 of the slide lock mechanism 40 downward. As a result, as shown in FIG. 7, the hook 43 rotates upward (turns counterclockwise) against its own weight so that the engaging portion 43k of the hook 43 is disengaged from the engaged portion 43e of the rotary table 34. Become. That is, the slide substrate 36 can slide along the pair of slide rails 35r with respect to the rotary table 34.

Next, the slide substrate 36 supporting the wheelchair 20 and the wheelchair holding plate 50 is slid from the position of the rear door opening 12 toward the inside of the vehicle interior along the slide rail 35r on the rotary table 34 (FIG. 3, FIG. Slide forward and left in 4). Then, with the slide substrate 36 in contact with the slide stopper 35s of the rotary table 34, the rotary table 34 is then horizontally rotated counterclockwise. The front wheel 22 and the rear wheel 27 of the wheelchair 20 are substantially parallel to the rear door opening 12 in a state where the rotary table 34 is rotated about 90 ° to the left from the right rotation limit position, and the left rotation stopper (not shown) operates. become. This position is the wheelchair storage position.

When the wheelchair 20 in the retracted position is to be removed from the vehicle 10, a force is applied in the reverse procedure of the above procedure. Here, as shown in FIG. 2, when the wheelchair holding plate 50 in the wheelchair lifting position is rotated downward (turned to the right) to the wheelchair set position (see FIG. 1), it is rotated as shown in FIG. Hold the rear handle 65h of the ratchet claw 65 of the regulating mechanism 60 and rotate the ratchet claw 65 clockwise around the claw center axis 65p to engage the ratchet teeth 63w of the fixed gear 63 with the claw body 65t of the ratchet claw 65. Release the ratchet. At this time, the rotation stopper 65s of the rear handle 65h of the ratchet claw 65 comes into contact with the left wall portion 36f of the slide substrate 36 from below, so that the ratchet claw 65 is held at the right rotation limit position shown in FIG. Will be done. In this state, the wheelchair holding plate 50 can be rotated downward (turned to the right) about the rotation center axis 50c with respect to the slide substrate 36.

Then, in the process of holding the wheelchair 20 and rotating the wheelchair holding plate 50 downward to the wheelchair set position shown in FIG. 1, as shown in FIG. 12, the fixed gear 63 that rotates clockwise integrally with the wheelchair holding plate 50. The gear bar 63h comes into contact with the receiving portion 65e of the ratchet claw 65. Then, when the wheelchair holding plate 50 rotates downward (turns to the right) to the wheelchair set position (see FIG. 1), the gear bar 63h of the fixed gear 63 presses the receiving portion 65e of the ratchet claw 65 to a predetermined position. The ratchet claw 65 rotates counterclockwise. As a result, the claw body portion 65t of the ratchet claw 65 engages with the ratchet teeth 63w of the fixed gear 63. That is, by rotating the wheelchair holding plate 50 downward (rotating to the right) to the wheelchair set position (see FIG. 1), the claw body portion 65t of the ratchet claw 65 automatically engages with the ratchet teeth 63w of the fixed gear 63. Will come to do. Next, by rotating the locking member 73 of the front wheel locking mechanism 70 downward to the unlocking position against the spring force of the spring material 75, the locking member 73 is moved to the unlocking position by the spring force of the spring material 75. It is held and the wheelchair 20 can be removed from the wheelchair holding plate 50.

<Correspondence between the terms in the claims and the terms in the first embodiment>
As described above, the wheelchair holding plate 50 corresponds to the wheelchair holding portion of the present invention. Further, the rotary table 34, the slide mechanism 35, the slide lock mechanism 40, the slide substrate 36, and the like that support the wheelchair holding plate 50 so as to be able to move from the wheelchair set position outside the vehicle interior to the wheelchair storage position inside the vehicle interior are the support mechanisms of the present invention. Corresponds to. Further, the frame receiving bar 55u in the frame center support portion 55 of the wheelchair holding plate 50 that supports the frame center portion 23 of the wheelchair 20 corresponds to the fulcrum of the present invention. Further, the locking member 73 of the front wheel locking mechanism 70 corresponds to the rotation stopper portion of the present invention. Further, the frame tip support portion 514 of the wheelchair holding plate 50 with which the lower frame tip portion 21 of the wheelchair 20 abuts corresponds to a holding portion that holds the wheelchair of the present invention so as not to separate from the fulcrum. Further, the central portion 23 of the frame of the wheelchair 20 corresponds to the frame of the wheelchair of the present invention.

<Advantages of the wheelchair storage device 30 of the vehicle 10 according to this embodiment>
According to the wheelchair storage device 30 of the vehicle 10 according to the present embodiment, the wheelchair 20 has a frame receiving bar 55u (fulcrum) and a front wheel lock mechanism 70 (rotation stop portion) of the frame center support portion 55 of the wheelchair holding plate 50 (wheelchair holding portion). ) And. Further, the frame receiving bar 55u of the frame center support portion 55 of the wheelchair holding plate 50 and the front wheel lock mechanism 70 are located at positions away from the center of gravity G of the wheelchair 20, and the center of gravity G of the wheelchair 20 is directly connected by the wheelchair holding plate 50. It is not a supportive configuration. That is, the wheelchair holding plate 50 does not directly support the center of gravity portion of the wheelchair 20, but supports the portion other than the center of gravity by the frame receiving bar 55u of the frame center support portion 55 and the front wheel lock mechanism 70. Therefore, the size of the wheelchair holding plate 50 may be a size that supports a part of the wheelchair 20, and can be sufficiently smaller than the total length of the wheelchair 20.

Further, the frame receiving bar 55u (fulcrum) of the frame center support portion 55 of the wheelchair holding plate 50 is configured to support the frame center portion 23 connecting the front wheels 22 and the rear wheels 27 of the wheelchair 20. Therefore, the frame receiving bar 55u of the frame center support portion 55 of the wheelchair holding plate 50 can satisfactorily support the position of the wheelchair 20 away from the center of gravity G. Further, by connecting the front wheel 22 of the wheelchair 20 to the wheelchair holding plate 50 by the front wheel lock mechanism 70, it is possible to receive a rotational moment caused by the center of gravity G of the wheelchair 20. Further, the wheelchair holding plate 50 is provided with a frame tip support portion 514 with which the lower frame tip 21 of the front end (front side of the front wheel 22) of the wheelchair 20 abuts. Therefore, when the wheelchair 20 is set on the wheelchair holding plate 50 and a lifting force is applied to the wheelchair 20 to rotate the wheelchair holding plate 50 upward, the wheelchair 20 is the frame center support portion of the wheelchair holding plate 50. Never leave the 55 frame receiving bar 55u.

<Change example>
The present invention is not limited to the above embodiment, and changes can be made without departing from the gist of the present invention. For example, in the present embodiment, the rotation moment caused by the center of gravity G of the wheelchair 20 centered on the frame receiving bar 55u (fulcrum) of the frame center support portion 55 is transferred by the front wheel lock mechanism 70 (rotation stop portion) of the wheelchair holding plate 50. An example of receiving is shown. However, for example, it is also possible to provide a lock mechanism in which a frame in the vicinity of the front wheel 22 of the wheelchair 20 is connected to the wheelchair holding plate 50, and to receive a rotational moment caused by the center of gravity G of the wheelchair 20 by the lock mechanism. If the center of gravity G of the wheelchair 20 is on the front wheel side, a lock mechanism for connecting a part of the rear wheels or a frame in the vicinity thereof is provided on the wheelchair holding plate 50, and the lock mechanism is used to connect the wheelchair 20 to the wheelchair 20. It is also possible to receive a rotational moment due to the center of gravity G.

Further, in the present embodiment, an example is shown in which the frame receiving bar 55u (fulcrum) of the frame center support portion 55 of the wheelchair holding plate 50 is brought into contact with the frame center portion 23 of the wheelchair 20 from below to support the frame center portion 23. rice field. However, it is also possible to support the frame central portion 23 by engaging the frame central support portion 55 (fulcrum) of the wheelchair holding plate 50 with the frame central portion 23 of the wheelchair 20. This makes it possible to omit the frame tip support portion 514 of the wheelchair holding plate 50.

20 ... Wheelchair 23 ... Frame center (frame)
30 ... Wheelchair storage device 34 ... Rotating table (support mechanism)
35 ... Slide mechanism (support mechanism)
36 ... Slide board (support mechanism)
50 ... Wheelchair holding plate (wheelchair holding part)
55 ... Frame center support (fulcrum)
55u ・ ・ ・ Frame receiving bar (fulcrum)
514 ... Frame tip support part (holding part)
70 ... Front wheel lock mechanism (rotation stop)
73 ... Locking member (rotation stop)

Claims (3)

A vehicle having a wheelchair holder in which a wheelchair is set and a support mechanism for supporting the wheelchair holder so that the wheelchair holder can move between the wheelchair set position outside the vehicle compartment and the wheelchair storage position in the vehicle interior. It ’s a wheelchair storage device.
The wheelchair holding portion has a fulcrum that supports an intermediate position between the front and rear wheels in a frame connecting the front and rear wheels of the wheelchair, and a rotational moment caused by the center of gravity of the wheelchair about the fulcrum. A wheelchair storage device for a vehicle having a rotation stopper that can be connected to an end portion of the wheelchair in the front-rear direction so that the wheelchair can be received at a position opposite to the center of gravity. The vehicle wheelchair storage device according to claim 1.
The rotation stop portion of the wheelchair holding portion holds a frame located in the vicinity of the wheelchair holding portion so that either the front wheel or the rear wheel of the wheelchair can be connected to the wheelchair holding portion. A wheelchair storage device for vehicles that is configured to be connected to a section. The wheelchair storage device for a vehicle according to claim 1 or 2.
When the wheelchair is set in the wheelchair holding portion and a force is applied to the wheelchair to move the wheelchair holding portion from the wheelchair setting position to the wheelchair storage position by the support mechanism, the wheelchair moves to the wheelchair holding portion. A wheelchair storage device for a vehicle in which a holding portion for holding the wheelchair so as not to separate from the fulcrum is provided in the wheelchair holding portion.

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