JPH11221251A - Wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheelchair, which can be adjusted to physical shapes of growing children or users. SOLUTION: A seat rail 20, a seat 1 and a seat back 2 are made freely expandable in lateral and longitudinal directions and legs are made stretchable in the vertical direction. Large wheels 6 are also made detachable as a user is kept sitting on the wheelchair by shifting the load of the large wheels 6 to small wheels 7. This load shifting is done by shifting support points 4 of the large wheels 6 as the fulcrum using leverage of support parts 5 of the bearing of the large wheels 6. When the seat back 2 is laid back, the seat 1 moves upward linking with the seat back 2 and simultaneously slides back to form a smooth and stream lined inclination matching the user's body line and also safety of the wheelchair is improved by shifting the center of gravity forward.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair device. [0002] Even if a child grows up, the size of the wheelchair device cannot be changed according to the physique. Therefore, the wheelchair device has to be replaced. 2. Description of the Related Art There is known a modular system for manufacturing a wheelchair device suitable for a physique by selecting the size of members of the wheelchair device according to a specific physique. There is also known a method of changing the height of a wheelchair device by changing the height of a fulcrum of a bearing of a large-diameter wheel.
A method of lifting a wheelchair device and a user with a jack or the like in order to remove a load applied to the large-diameter wheel when a large-diameter wheel is attached or detached while a user is carried thereon is known. A method of moving a seat horizontally forward when reclining the spine backward is known. [0003] If the size of the wheelchair device is to be adjusted as the child grows up, it is necessary to replace the wheelchair device. In addition, it is necessary to make a special order to manufacture a wheelchair device adapted to a specific physique. If a user uses a jack or other device to lift the wheelchair device when attaching and detaching a large-diameter wheel while the user is on the vehicle, the cost is increased. You need to attach it to your phone or carry it separately. When reclining the spine backward, it is necessary to form a slope that matches the line of the body. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a pedestal, a seat and a spine, which are capable of freely extending and retracting vertically and horizontally, and legs, and supporting points of axles of large diameter wheels. To
Using the `` support part of the bearing of the large wheel '' as a lever, moving the load on the large diameter wheel by moving it to the small diameter wheel makes it possible to attach and detach the large diameter wheel while carrying the user,
Furthermore, the present invention is a wheelchair device equipped with a device in which the seat rises in conjunction with the spine when the spine is tilted backward, and at the same time the seat slides forward. [0005] The present invention is characterized in that in the wheelchair device described above, the width of the pedestal, the seat and the spine in the vertical and horizontal directions, and the legs can be made to expand and contract vertically. Wheelchair device. In addition, the present invention uses the "support portion of the bearing of the large wheel" as a fulcrum of the axle of the large diameter wheel, and transfers the load applied to the large diameter wheel to the small diameter wheel by moving, thereby allowing the user to carry the user. A wheelchair device characterized in that a large-diameter wheel can be attached and detached while being left. Further, the present invention is a wheelchair device characterized in that a device is mounted in which the seat is raised in conjunction with the spine when the spine is tilted backward, and at the same time the seat is slid forward. A wheelchair device according to the present invention will be described below with reference to the drawings. <A> Overall Configuration As shown in FIG. 1, a wheelchair device according to the present invention comprises a pedestal 20
The vertical and horizontal widths of the spine 2 and the legs 3 can be freely expanded and contracted up and down, and the fulcrum 4 of the large-diameter wheel bearing is moved by using the "support portion of the large wheel bearing" 5 as a lever. By transferring the load applied to the large-diameter wheel 6 to the small-diameter wheel 7, the large-diameter wheel 6 can be attached and detached while the user is on the vehicle. This is a wheelchair device equipped with a device in which the seat portion 1 slides forward while the seat portion 1 is raised. <B> Expansion and contraction of the seat, spine and legs As shown in FIG. 2, the wheelchair device of the present invention allows the width and height of the pedestal 20 seat 1 and the spine 2 and the height of the legs to be freely expandable and contractible. To do this, the structural material 8 for the seat, the structural material 9 for the spine, and the structural material 10 for the legs
It is constituted by the nest 11 housed in the inside. The seat 1, the spine 2, and the leg 3 are made by sliding the structural material and the nest.
To expand and contract to change the size of the wheelchair device. <C> Attaching / Detaching Large-Diameter Wheels As shown in FIG. 3, the "supporting portion for bearings of large-diameter wheels" 5 is attached to a structural member 8 of a pedestal connecting the front leg portion and the rear leg portion.
The “supporting portion of the large-diameter wheel bearing” 5 is integrated with the structural material along the structural material 8 of the pedestal by folding in a U-shape. The load on the large-diameter wheel 6 is reduced by pushing the upper part 14 of the “large-diameter wheel bearing support portion” 5 forward while moving the wheelchair device slightly forward to move the fulcrum 4 of the large-diameter wheel bearing backward. The transfer to the wheels 16 enables the attachment and detachment of the large-diameter wheels 6 while keeping the user on. <C> Reclining As shown in FIG. 4, the spine 2 is pushed forward about the spine support shaft 17 connected to the armrest 9 by tilting the spine backward. The seat 1 connected to the ascends and moves forward at the same time and slides forward. This forms a smooth slope that matches the body line. According to the present invention, as described above, the following effects can be obtained. <B> The size of the wheelchair device can be changed according to the child's growth. Also, off-the-shelf wheelchair devices can be instantly adjusted to suit different builds. <B> Large-diameter wheels can be attached and detached while the user is on, without the need for special muscular strength and special equipment. <D> When reclining, a slope that matches the line of the body can be formed.

[Brief description of the drawings] FIG. 1 is an explanatory view of a wheelchair device according to the present invention. FIG. 1 is an explanatory view of expansion and contraction of a seat, a spine, and a leg. FIG. 3 is an explanatory view of a large wheel attaching / detaching device. FIG. 4 is an explanatory view of a reclining device.

[Procedure amendment] [Submission date] June 1, 1998 [Procedure amendment 1] [Document name to be amended] Description [Item name to be amended] Brief explanation of drawings [Amendment method] Change [Content of amendment] [ BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows the overall structure of the wheelchair device of the present invention. FIG. 2 shows the width and height of the pedestal 20, the seat 1, the spine 2 and the height of the leg 3 shown in FIG. Expand and contract freely as shown. Further, the load applied to the large-diameter wheel 6 is reduced by moving the fulcrum 4 of the large-diameter wheel bearing as shown in FIG. The transfer to the wheels 16 enables the attachment and detachment of the large-diameter wheels 6 while keeping the user on. Further, as shown in FIG. 4, when the spine 2 shown in FIG. 1 is tilted rearward, the seat 1 rises in conjunction with the spine 2 and at the same time a wheelchair device equipped with a device in which the seat 1 slides forward. It is. FIG. 2 is a view showing the expansion and contraction of the seat and the legs. As shown in FIG. By sliding the structural member and the nest, the pedestal 20 and the leg 3 shown in FIG. 1 can be expanded and contracted to change the size of the wheelchair device. The seat 1 and the back 2 shown in FIG. 1 can be expanded and contracted in a similar manner. <C> Attaching and detaching of large-diameter wheels As shown in FIG. 3, a "supporting portion for large-diameter wheel bearings" 5 is mounted on a structural member 8 of a pedestal connecting the front leg portion and the rear leg portion.
The “supporting portion for the bearing of the large-diameter wheel” 5 is integrated with the pedestal structural material along the pedestal structural material 8 by being folded in a U-shape. The load on the large-diameter wheel 6 is reduced by pushing the upper part 14 of the “large-diameter wheel bearing support portion” 5 forward while moving the wheelchair device slightly forward to move the fulcrum 4 of the large-diameter wheel bearing backward. The transfer to the wheels 16 enables the attachment and detachment of the large-diameter wheels 6 while keeping the user on. <C> Reclining As shown in FIG. 4, the spine 2 is pushed forward by centering on the support shaft 17 of the spine connected to the armrest 9 by tilting the spine 2 backward. The seat portion 1 connected to the portion 2 is simultaneously moved up and slides forward. This forms a smooth slope that matches the body line. [Explanation of symbols] Seat ... 1 Back ... 2 Legs ... 3 Large wheel bearing Support point of large diameter wheel bearing 5 Large diameter wheel 6 Structural material of pedestal 8 Armrest・ 9 Structural material of legs ・ ・ ・ ・ ・ ・ ・ 10 Nesting ・ ・ ・ ・ ・ ・ ・ ・ ・ 11 Upper part ・ ・ ・ ・ ・ ・ ・ ・ ・ 14 Small diameter wheels ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 16 Back support shaft 17 Base 20

Claims (1)

[Claim 1] A large wheel is attached to a wheelchair device having small wheels mounted on two or four legs, or a wheelchair device having small wheels mounted on two or four legs. Wheelchair device, or a wheelchair device in which detachable large wheels are attached to a wheelchair device having small diameter wheels mounted on two or four legs, the width of a pedestal, a seat and a spine is set vertically and horizontally, and the legs are set up and down. A wheelchair device characterized in that the size of the wheelchair device can be changed by making it extendable. [Requirement 2] In the case where small wheels are attached to the four legs of the wheelchair device described in the requirement 1 and the large wheels are detached while the user is mounted, the fulcrum of the bearing of the large wheels is set to "large". The support for the large-diameter wheel axle is leveraged, and by moving the load applied to the large-diameter wheel to the small-diameter wheel, the large-diameter wheel can be attached and detached while the user is on. Wheelchair equipment. [Requirement 3] When the wheelchair device described in Requirement 1 or 2 is reclined by tilting the spine backward, the seat rises in conjunction with the spine and simultaneously slides forward. A wheelchair device capable of forming a smoother slope.