JPH0951915A - Wheelchair fixing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing device with which a wheelchair can be easily fixed, and with which fixing of it can be easily released. SOLUTION: A first link mechanism 10 and a second link mechanism 20 are connected to each other at an intermediate part to be vertically rotatable, and lock mechanisms 30 are provided at right and left end parts at upper parts of the respective link mechanisms 10, 20, so by lifting the first link mechanism 10, the second link mechanism 20 is simultaneously turned upward to lock hook members 31 of the receptive lock mechanisms 30 on forward/back positions of right/left frames of a wheelchair for fixing the wheelchair. By releasing operation of a lock release mechanism 40, lock of the hook members 31 of the lock mechanisms 30 is simultaneouly released through cables 40b, 40c for releasing a fixation of the wheelchair.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair fixing device.

[0002]

2. Description of the Related Art Generally, in order to fix a wheelchair on a floor, a front wheel fixing belt is fastened to a fixing metal fitting provided on the floor while being hooked on the front portions of the left and right frames constituting the vehicle body of the wheelchair. In addition, a means for tightening and fixing the rear wheel fixing belts to other fixing fittings provided on the floor while being hooked on the rear portions of the left and right frames is adopted.

In such fixing means, it is necessary to tighten and fix the wheelchair at the four positions of the front and rear and the left and right while adjusting the fixing belts each time, and when fixing the wheelchair, the circumference of the wheelchair is secured. It is very troublesome to move around. In particular, when fixing a wheelchair to a limited narrow space such as a vehicle compartment, there is a problem that the work of fixing the wheelchair is difficult. Japanese Utility Model Publication No. 5-25609 proposes a fixing device for a wheelchair to deal with such a problem.

The fixing device is provided with a pair of left and right engaging means on a connecting member for connecting the upper ends of a pair of left and right links that are rotatably mounted on the floor side in the vertical direction, and is provided on the left and right frames of the wheelchair. The engaged means is provided, and the engaging means of the wheelchair side is engaged with the engaging means of the wheelchair side by the pivotal movement of these both links in the vertical direction, so that the wheelchair is fixed to the floor side via both links. Is configured.

In the fixing device having such a structure, both links are vertically rotated by the operation of the driving means,
The engagement means provided on the coupling member engages with and disengages the engaged means provided on the wheelchair side, and it is extremely easy to fix and release the wheelchair. have.

[0006]

By the way, in the fixing device, it is an indispensable condition to provide a plurality of engaged means on the wheelchair side. However, there is a problem that it lacks versatility. In addition, since there are only a pair of left and right engaging means for the link-side connecting member, there are only two left and right fixed parts for both links of the wheelchair, and there are four fixed parts for the front and rear and left and right. Compared with, the wheelchairs are not always firmly fixed.

Therefore, the object of the present invention is to have the workability which is no different from the fixing work and the fixing release work in the fixing device of the wheelchair, and it can be used for fixing many general wheelchairs and is versatile. An object of the present invention is to provide a fixing device that is expensive and that can fix a wheelchair at a total of four parts in the front, rear, left and right.

[0008]

The present invention relates to a fixing device for a wheelchair, in which the upper end portions of a pair of left and right links are connected by a connecting member, and the lower end portions of these links are on the floor side. First assembled to the upper and lower rotatably
The link mechanism is connected to the upper ends of the pair of left and right links by a connecting member, and the intermediate portions of these links are rotatable in a state of intersecting the intermediate portions of the respective links constituting the first link mechanism. And a lower end of each of these links is assembled to the floor side so as to be movable in the front-rear direction, and an upper end is urged to each end of a connecting member that constitutes each of these link mechanisms. And a hook member releasably attached to each of the left and right frames constituting the wheelchair body, and the hook members are locked to the respective frames by restricting the rotation of the hook members. Lock members for holding the state, lock releasing means for operating the lock members to release the rotation restriction of the hook members,
It is characterized in that it is provided with a pressing means which is connected to one of the connecting members of both the link mechanisms and presses down the connecting member.

In the fixing device according to the present invention, it is preferable that the connecting member constituting each of the link mechanisms is configured to be expandable / contractible in the left-right direction so that the position of each hook member in the left-right direction can be adjusted. In the fixing device,
It is preferable that each link constituting at least one of the link mechanisms is configured to be expandable and contractable so that the vertical position adjustment of each hook member is possible. It is preferable that the apparatus is assembled in a recess provided on the floor so that the entire device can be stored in the recess.

[0010]

The wheelchair fixing device configured as described above is disposed on a predetermined floor and is in a lying state. When the wheelchair is arranged above, the wheelchair fixing device is located between the left and right wheels of the wheelchair. Further, each hook member provided on the connecting member of each link mechanism is located below the left and right frames forming the vehicle body of the wheelchair.

In this state, when the first link mechanism of the fixing device holds the connecting member and pulls it up, the second link mechanism is pulled up in conjunction with this, and each hook member is pulled up during the pulling up. Is in contact with each frame of the wheelchair from below and rotates downward to get over each frame, and then returns to the upper direction to be positioned above each frame or loosely hooked to each frame by its own weight. Then, when one of the link mechanisms is pushed down by operating the pushing means, the other link mechanism is also pushed down in conjunction with this, and each hook member provided on the connecting member of the one link mechanism is attached to the rear of each of the left and right frames. And the hook members provided on the connecting member of the other link mechanism are firmly hooked to the front parts of the left and right frames. As a result, the wheelchair is firmly hooked and fixed to each link mechanism at a total of four positions in front, rear, left and right.

Further, in order to release the fixation of the fixed wheelchair, the pressing operation of both link mechanisms by the pressing means is released, and the lock releasing means is operated to restrict the rotation of each hook member by each lock member. To cancel. As a result, each hook member pivots upward and separates from each frame of the wheelchair, pivots each link mechanism downward to position each hook below each frame, and unlocks the wheelchair. You can

As described above, according to the fixing device, the wheelchair can be fixed at front and rear and right and left at a total of four sites, so that the wheelchair can be reliably fixed and highly stable. Further, the fixing work and the fixing release work of the wheelchair can be easily performed from one of the front and rear positions of the wheelchair. Further, in the fixing device, it is not necessary to dispose a special part on the wheelchair side, so that a general wheelchair can be easily fixed and the versatility is high.

In the fixing device, if each hook member is positionally adjustable in the left-right direction and both links constituting at least one of the link mechanisms are extendable / contractible, each frame of the wheelchair is provided. The position of the hook member in the left-right direction and / or the vertical direction can be adjusted, and it is possible to sufficiently deal with wheelchairs of different widths and wheelchairs of different heights, thus further increasing the versatility of the fixing device. Can be improved. Further, by disposing the fixing device in the recess provided on the floor side, the fixing device can be stored in the recess when the fixing device is not in use, which does not cause much trouble in using the floor. .

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described with reference to the drawings. FIGS. 1 and 2 show a fixing device for a wheelchair according to an example of the present invention. The fixing device includes a first link mechanism 10 (hereinafter referred to as a first link mechanism), a second link mechanism 20 (hereinafter referred to as a second link mechanism), a lock mechanism 30, an unlock mechanism 40, and a push-down mechanism 50. It has been configured. In addition, in the same figure, a part of each component is omitted.

The first link mechanism 10 is a pair of left and right links 1.
1 and 12 and a connecting member 13 that connects the upper ends of both the links 11 and 12, and each of the links 11 and 12 includes a lower link member 11a and 12a and an upper link member 11b.
12b, and the connecting member 13 is composed of a central first pipe member 13a and left and right second pipe members 13b and 13c. Each upper link member 11b, 12b
Are fixed to the outer periphery of the first pipe member 13a at their upper ends and are connected to the lower link members 11a, 12a at their lower ends by the means shown in FIGS. 1 and 3. .

In each of the lower link members 11a and 12a, a pair of upper and lower stepped connecting bolts 1 are provided at their upper ends.
1c and 12c are provided so as to project inward, and in the upper link members 11b and 12b, elongated holes 11d and 12d extending in the longitudinal direction are formed at their lower ends.
The connecting bolts 11c and 12c pass through the long holes 11d and 12d and are retained by the nuts 11e and 12e, and the stepped portions of the connecting bolts 11c and 12c are formed into the long holes 11 respectively.
It is slidably positioned in d and 12d. This allows
The upper link members 11b and 12b are the lower link members 11
The nuts 11e and 12e are connected to the connecting members 13a and 12a and the connecting member 13, and can be expanded and contracted in the longitudinal direction by loosening the nuts 11e and 12e.

In the connecting member 13, the inner end sides of the left and right second pipe members 13b and 13c are inserted through the respective open ends of the first pipe member 13a, and the second pipe members 13b and 13c are inserted.
c is capable of expanding and contracting with respect to the first pipe member 13a,
Each second pipe member 13b, 13c is a screw member 13 for fixing.
The second pipe member 13 of each screw member 13d, 13e is fixed to the first pipe member 13a by the screwing action of d, 13e.
When the screwing on b and 13c is released, it can be expanded and contracted in the left-right direction.

In the first link mechanism 10, as shown in FIG. 2, the lower ends of the lower link members 11a and 12a are vertically attached to the mounting bracket 14 arranged in the recess 61a provided on the floor 61. It is assembled so that it can rotate,
The links 11 and 12 extend rearward in a state of being vertically rotatable. In addition, the connecting member 13 can adjust the rearward protruding length by expanding and contracting the upper link members 11b and 12b.

The second link mechanism 20 is composed of a pair of left and right links 21, 22 and a connecting member 23. The connecting member 23 is a central first pipe member 23a and left and right second pipe members 23b, 23c. It is composed of and. Each link 2
1, 22 are fixed to the outer periphery of the first pipe member 23a of the connecting member 23 at their upper ends. In the connecting member 23, the inner end sides of the left and right second pipe members 23b and 23c are the first
The second pipe members 23b and 23c are inserted through the respective open ends of the pipe member 23a so that they can be expanded and contracted with respect to the first pipe member 23a, and the second pipe members 23b and 23c are fixed by screws. It is fixed to the first pipe member 23a by the screwing action of the members 23d and 23e, and each screw member 23d and 23e
When the second tube members 23b and 23c are unscrewed, the second tube members 23b and 23c can expand and contract in the left-right direction.

In the second link mechanism 20, as shown in FIG. 4, at the intermediate portion in the longitudinal direction of each of the links 21 and 22, as shown in FIG.
A lower link member 11a that constitutes the first link mechanism 10,
12a is rotatably connected in the vertical direction, and the lower ends of the links 21 and 22 are fitted to a rail member 24a provided in a recess 61a provided on the floor 61 as shown in FIG. It is assembled so as to be movable in the front-back direction.

As shown in FIG. 4, in each of the links 21 and 22, a stepped connecting bolt 25b is inserted through a bush 25a, and the connecting bolt 25b inserts the lower link members 11a and 12a. In this state, each link 2 is secured by a nut 25c screwed to the tip end.
1, 22 are rotatably connected to the lower rank members 11a, 12a. Further, as shown in FIG. 5, a roller 26 is rotatably supported at the lower end of each of the links 21 and 22, and the roller 26 is a rail member disposed in the recess 61a via a mounting bracket 24b. It is inserted into the inside of 24a and can roll.

The lock mechanism 30, as shown in FIG. 1, is a mounting bracket provided at the end of each second pipe member 13b, 13c, 23b, 23c of the connecting member 13, 23 constituting each link mechanism 10, 20. They are assembled into 13d and 23d, and a total of four, two on the left and two on the front and two on the front.

The lock mechanism 30 is shown in FIGS. 1, 6 and 9.
As shown in FIG. 3, the hook member 31, the lock member 32, the first spring 33 that biases the hook member 31, and the second spring 34 that biases the lock member 32 are configured. The hook member 31 includes a hook 31a that opens downward on the tip side, and has a base end 31b at the mounting bracket 13.
It is supported rotatably in the vertical direction on a support pin 35a fixed to d or 23d. The first spring 33 is hooked between the hook member 31 and the support pin 35,
The hook member 31 is biased clockwise in the drawing.

The lock member 32 is composed of a lock portion 32a and a connecting arm portion 32b, and is vertically rotatable on a support pin 35b fixed to the mounting bracket 13d or 23d at the base end portion of the lock portion 32a. Supported by. The second spring 34 is hooked between the connecting arm portion 32b of the lock member 32 and urges the lock member 32 counterclockwise in the drawing so that the tip end of the lock portion 32a is the base end portion of the hook member 31. It is hooked on the hook portion 31c on the side of 31b. Further, the connecting arm portion 32b of the lock member 32 is connected to an inner wire of a cable forming a lock release mechanism 40 described later.

In the lock mechanism 30, the lock member 32
Is for restricting the rotation of the hook member 31 in the clockwise direction in the drawing with the tip thereof hooked on the hooking portion 31c of the hook member 31, and the hook member 31 is in a substantially horizontal state when the rotation is restricted. To the left or right and hook 31a
The opening of is directed downward.

As shown in FIGS. 1 and 7, the unlocking mechanism 40 includes a mechanism body 40a, a pair of cables 40b,
40c, and the mechanism body 40a has a floor 61
It is arranged in the second recess 61b provided above. As shown in FIG. 7, the mechanism main body 40a is composed of a mounting bracket 41 provided at the bottom of the second recess 61b, a release lever 42, and a connecting arm 43. Release lever 42
Is composed of a plate-shaped lever body 42a and a pair of arm portions 42b provided on both left and right sides of the lower surface of the lever body 42a and projecting downward. The mounting bracket 41 is erected at the upper end of each arm portion 42b. It is rotatably supported on a support pin 42c fixed to the portion 41a.

The connecting arm 43 includes a connecting portion 43a and an engaging portion 4
3b, the bottom plate portion 41 of the mounting bracket 41
Both left and right sides of b are rotatably supported via support pins 43c, so that the connecting portion 43a is projected rearward and the engaging portion 43b is projected laterally. Engagement part 43
The front end portion of b faces the rear of the lower end portion of the arm portion 42b of the release lever 42.

Front cable 40b and rear cable 4
0c is the outer tube 44 and the inner wire 4
It is composed of 5 and is branched into two left and right in the middle. The base end portion of each outer tube 44 is fixed to each left and right standing portion 41a of the mounting bracket 41, and each tip end portion of the outer tube 44 is fixed to the mounting bracket 13d or 23d of each lock mechanism 30. There is. Further, the base end of each inner wire 45 is connected to the connecting portion 43a of each connecting arm 43, and each tip of the inner wire 45 is connected to each locking mechanism 3.
The lock member 32 of No. 0 is connected to the connecting arm portion 32b.

In the lock releasing mechanism 40, the lever main body 42a is formed in a left-right symmetrical plane shape, and a recess 42c is formed at the center of the rear side edge. Recess 42c
Is formed in a size that allows the operator's fingers to be inserted,
The operator inserts his / her fingers into the recess 42c to insert the lever main body 42a.
When the lever body 42a is operated to lift, the lever main body 42a pivots upward about both the support pins 42c, and the pivotal movement of each arm portion 42b causes the connecting arm 43 to support the support pin 43.
It is rotated in the clockwise direction shown in FIG. 7 (a) about c.

As shown in FIGS. 1 and 8, the push-down mechanism 50 comprises a tension belt 51, a winding drum 52, a ratchet 53, a handle 54, and a lock lever 55, and these members are included. Is a recess 61 on the floor 61
It is housed in a case 56 arranged in a. The take-up drum 52 and the ratchet 53 are integrally assembled on a rotary shaft 57 rotatably supported by both side walls of the case 56, and the tip end of the rotary shaft 57 projects from the case 56. A handle 54 is integrally attached to the tip portion.

The lock lever 55 is rotatably supported by the case 56 at its intermediate portion and is urged in the counterclockwise direction in FIG. 8 by a spring (not shown), and the ratchet is urged by the spring. It is elastically hooked to a part of 53. As a result, the lock lever 55 moves the rotary shaft 5
7 is allowed to rotate in the counterclockwise direction in the drawing, but rotation in the clockwise direction in the drawing is restricted.

In the pressing mechanism 50, the tension belt 51
The base end of is fixed to the winding drum 52,
The tip portion is fixed to the first pipe member 13a of the connecting member 13 that constitutes the first link mechanism 10, and the pulling belt 51 is wound to apply a pressing force to the first link mechanism 10, and By rewinding the tension belt 51, the first
The pressing force on the link mechanism 10 is released.

The wheelchair fixing device thus constructed is arranged on the recesses 61a and 61b of the floor 61, and the pulling belt 51 of the push-down mechanism 50 is in a relaxed state. 20 is rotated downward and is stored in the first recess 61 a of the floor 61. In this state, the wheelchair 62 is moved to the first recess 6 as shown in FIG.
When it is arranged above 1a, the fixing device is located between the left and right wheels 62a of the wheelchair 62, and each link mechanism 10, 2
The hook members 31 of the lock mechanisms 30 provided on the connecting members 13 and 23 of 0 are located below the left and right frames 62b that form the vehicle body of the wheelchair 62.

In this state, when the first link mechanism 10 of the fixing device is grasped by the connecting member 13 and pulled up,
The second link mechanism 20 is pulled up in conjunction with this, and during the pulling up, each hook member 31 abuts on each frame 62b of the wheelchair 62 from below.

FIG. 9 shows a second operating state of the lock mechanism 30.
The spring 34 is shown in a state where a part thereof is omitted. When each hook member 31 comes into contact with each frame 62b of the wheelchair 62 from below, each hook member 31 becomes a first spring as shown in FIG. It rotates downwards against 33, gets over each frame 62b, and then returns upward and returns to a position above each frame. In this state, when the hand is released from the connecting member 13, both link mechanisms 10 and 20 rotate downward by their own weight, and the hook members 31 of the lock mechanisms 30 are hooked to the frames 62b at substantially the same time.

Then, when the handle 54 of the push-down mechanism 50 is rotated counterclockwise in FIG. 8 to wind the tension belt 51 onto the winding drum 52, the tension belt 51 is connected to the connecting member of the first link mechanism 10. 13 is pushed down, and in conjunction with this, the second link mechanism 20 is pushed down. As a result, the hook members 31 of the two lock mechanisms 30 are firmly hooked to the frames 62b as shown in FIG. 9B, and the wheelchair 62 is locked by the four lock mechanisms 30 of the fixing device. It is fixed in a reliable and stable state at four locations, front and back and left and right.

On the other hand, in order to release the fixed state of the wheelchair 62 in the fixed state, the release lever 42 of the lock release mechanism 40 is rotated upward. As a result, the lever main body 42a is rotated upward about both support pins 42c, and the connecting arm 43 is centered on the support pins 43c by the rotation operation of each arm portion 42b. All inner wires 4 of each cable 40b, 40c
Stretch 5.

As a result, in each lock mechanism 30, as shown in FIG. 9A, the lock member 32 rotates clockwise in the figure against the second spring 34 and separates from the hook member 31. Therefore, the hook member 31 is
By the urging force of the spring 33, it is rotated clockwise in the drawing to separate from each frame 62b, and the fixation to the wheelchair 62 is released. After that, when the turning operation of the release lever 42 is released, the lock member 32 elastically abuts against the back portion of the hook member 31 by the urging force of the second spring 34, but the hook member 31 is shown in FIG. The rotation state shown in FIG.

In this state, both link mechanisms 10, 2
0 rotates downward by their own weight, and if the lock lever 55 of the push-down mechanism 50 is rotated clockwise in the drawing of FIG. 8 to unlock the ratchet 53, both link mechanisms 10 and 20 are in the free state. Then, it rotates further downward by its own weight and is stored in the first recess 61a of the floor 61. In this case, the handle 54 is grasped and the winding drum 52 is held.
By suppressing the rotation of No. 1, the unwinding of the tension belt 51 can be performed at a very low speed, and the two link mechanisms 10 and 20 can be quietly stored in the first recess 61a.

As described above, according to the fixing device, the wheelchair 62 can be fixed at front and rear and right and left at a total of four sites, so that the wheelchair 62 can be fixed securely.
And the stability of the fixed state is high. Further, the fixing work and the fixing release work of the wheelchair 62 can be easily performed at a position behind the wheelchair 62. Further, in the fixing device, it is not necessary to dispose special parts on the side of the wheelchair 62, so that a general wheelchair can be easily fixed and the versatility is high.

In the fixing device, the connecting members 13 and 23 constituting the link mechanisms 10 and 20 are expandable and contractable in the left and right directions, and the locks arranged at the respective end portions of the connecting members 13 and 23. The horizontal position of the hook member 31 of the mechanism 30 can be adjusted, and the first link mechanism 10 can be adjusted.
The links 11 and 12 are extendable and contractible in the longitudinal direction thereof, and the lock mechanisms 3 are provided at the respective ends of the connecting member 13.
Since the height of the hook member 31 of 0 can be adjusted, it is possible to sufficiently deal with wheelchairs having different widths and / or different heights, which is more versatile.
Further, in the fixing device, when the mechanism is not used, all the mechanisms 10 to 50 are stored in the first and second recesses 61a and 61b provided on the floor 61.
You can minimize the obstacles when using.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a fixing device according to the present invention.

FIG. 2 is a side view showing a part of a wheelchair fixed by the fixing device.

FIG. 3 is a lateral cross-sectional view showing an enlarged connecting portion of each link in the first link mechanism that constitutes the fixing device.

FIG. 4 is an enlarged plan view showing a connecting portion of each link in both link mechanisms constituting the fixing device.

FIG. 5 is an enlarged vertical cross-sectional view showing a floor side assembling portion at a lower end portion of each link in the second link mechanism constituting the fixing device.

FIG. 6 is an enlarged view showing a lock mechanism that constitutes the fixing device, where FIG. 6A is a front view and FIG. 6B is a plan view.
FIG. 3C is a side view.

7A and 7B are enlarged views of a lock releasing mechanism that constitutes the fixing device, FIG. 7A is a plan view, and FIG. 7B is a rear view.

FIG. 8 is an enlarged vertical sectional side view showing a pressing mechanism constituting the fixing device.

9A and 9B are schematic views showing the operation of the lock mechanism, wherein FIG. 9A is an enlarged front view showing an unlocked state of the frame, and FIG. 9B is an enlarged front view showing the locked state. FIG. 1C is an enlarged front view showing a state of passing through the frame.

[Explanation of symbols]

10, 20 ... Link mechanism, 11, 12, 21, 22 ... Link, 13, 23 ... Connecting member, 24a ... Rail member, 2
6 ... Roller, 30 ... Lock mechanism, 31 ... Hook member, 3
2 ... Lock member, 33, 34 ... Spring, 40 ... Lock release mechanism, 40a ... Mechanism body, 40b, 40c ... Cable, 42 ... Release lever, 43 ... Connection arm, 44 ... Outer tube, 45 ... Inner wire, 50 ... Pressing mechanism,
51 ... tension belt, 52 ... winding drum, 53 ... ratchet, 54 ... handle, 55 ... lock lever, 61 ... floor, 62 ... wheelchair, 62b ... frame.

Claims (4)

[Claims] 1. A first link mechanism in which the upper end portions of a pair of left and right links are connected by a connecting member, and the lower end portions of these links are assembled on the floor side so as to be vertically rotatable, and a pair of left and right links. The upper ends of the links are connected by a connecting member, and the intermediate parts of these links are rotatably connected while intersecting the intermediate parts of the links that form the first link mechanism, and these links are also connected. A second link mechanism in which the lower end of the link mechanism is attached to the floor side so as to be movable in the front-rear direction, and the end portions of the connecting members that make up each of these link mechanisms are urged upward and rotatable in the vertical direction. A hook member that is removably hooked to each of the left and right frames constituting the wheelchair body, and a lock member that restricts the rotation of each hook member to hold the hooked state with respect to each frame. , Move each of these locking members Lock releasing means for releasing the rotation restriction of each of the hook members, and pressing means connected to one of the connecting members of the both link mechanisms and pushing the connecting member downward. Wheelchair fixing device. 2. The wheelchair fixing device according to claim 1, wherein a connecting member that constitutes each of the link mechanisms is configured to be extendable / contractible in the left-right direction. 3. The wheelchair fixing device according to claim 1, wherein each link constituting at least one of the link mechanisms is configured to be expandable and contractable. 4. The wheelchair fixing device according to claim 1, 2, or 3, wherein each link mechanism is assembled in a recess provided on a floor so that the entire device can be stored in the recess. A fixing device for a wheelchair characterized by being provided.