KR20190008775A - Moving kit for wheelchair - Google Patents

Abstract

The present invention provides a moving kit for a wheelchair, wherein the moving kit is capable of greatly improving portability and convenience by easily attaching and detaching a wheel without a hub and a spoke. To this end, the moving kit for a wheelchair according to the present invention comprises: a frame supporting a backrest, a seat, and a footrest so that a user can sit; a pair of wheels formed without a hub and a spoke, mounted to freely rotate on both sides of the frame, and having a wheel handle; at least three guide rollers mounted on each of both sides of the frame, and guiding and supporting the wheel to be rotated without deviating from the original position; and a position variable device installed on the frame while the guide roller located at the uppermost part among the guide rollers is mounted, and capable of changing the position of the guide roller to prevent the wheels from being separated or restricting the position of the guide roller by being operated by an operation of a lever handle.

Description

{MOVING KIT FOR WHEELCHAIR}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a manual wheelchair having a hub and a spoke-free wheel, and more particularly to a wheelchair moving kit capable of easily detaching and attaching a wheel, .

Today, wheelchairs are widely used for the convenience of people who can not move their legs freely, such as patients with inadequate mobility, elderly people or persons with disabilities.

The type of wheelchair is generally classified into a manual type in which a user rotates the wheel directly by the user depending on the driving method of the wheel, and an electric type in which the wheel rotates by the rotational force of the motor. Particularly in the case of a hand wheelchair, To be folded or unfolded.

Conventional manual wheelchairs include a frame having a seat and a backrest, a handle and an armrest, wheels mounted on both sides of the frame, a hand rim provided on the outside of the wheel, A caster for adjusting the traveling direction, a footrest mounted on the front side of the frame, and a brake mounted on both left and right sides of the frame for reducing or stopping the rotation speed of the wheel.

Such a conventional hand wheelchair can be moved by pushing and holding the handle by the protector or the caregiver, or by rolling the wheel by turning the wheel handle back and forth by hand while the user is on the wheelchair, and by operating the brake, I can stop it.

However, there is a considerable risk that a user (passenger) will be uncomfortable in the process of turning the wheel handle for driving, or in the case of a weak user such as a patient with an elderly person or a handicap, have.

Accordingly, a wheelchair having a hub and a spoke-free wheel has been developed to fundamentally solve the problem of an accident involving a user's hand in a spoke.

For example, U.S. Patent No. 5,669,619 discloses a lightweight portable wheelchair that is easy to assemble and disassemble. That is, U.S. Patent No. 5,669,619 discloses a seat assembly comprising a seat assembly including a seat back and a seat, a footrest comprising at least one auxiliary wheel, the seat assembly and the footrest comprising a first wheel mounted on a first rim, And a second wheel mounted on the second rim, wherein the first wheel is connected to the first wheel in such a manner as to extend and release between the two sides of the first rim, And a second motor coupled to the second wheel in such a manner that the seat assembly is expanded and released between both sides of the second rim and coupled to the second wheel, And a second cross-brace including the second cross-braces.

However, since the first and second wheels are coupled with the first and second motors for smooth and stable operation, the running is not smooth and friction noise is generated, and the first and second crossbars It is difficult and uncomfortable for the first and second wheels to be detached and attached due to interference so that the wheelchair can be easily attached to and detached from the vehicle in order to ensure the freedom and mobility of the wheelchair user. There is a limit that can not be met.

Herein, the background art or the prior art described above is only intended to help understand the technical significance of the present invention as information acquired by the present inventor or derived from the present invention, It does not mean that it is widely known in the field.

US 5,669, 619 B1 (Oct. 12, 1995) KR10-1272035 B1 (2013.05.31) KR20-0116164 Y1 (May 05, 1993) KR20-0161937 Y1 (September 09, 1999) KR10-0859327 B1 (2008.09.12) KR10-1406496 B1 (2014.06.03) KR20-0475891 Y1 (2015.01.05)

Accordingly, the present inventor has intensively focused on solving the limitations and problems of the existing wheel chair by considering the above-mentioned matters in a comprehensive manner, and can easily attach and detach a wheel without a hub and a spoke, thereby improving mobility and convenience As a result, the inventor invented the present invention as a result of constant efforts to develop a new structure of a wheelchair.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a wheelchair that can easily be detached and attached by preventing interference when the wheel is detached and attached.

Herein, the technical object and object to be solved by the present invention are not limited to the technical object and purpose mentioned above, and another technical object and purpose not mentioned can be understood by those skilled in the art from the following description.

Technical Solution According to an aspect of the present invention, there is provided an apparatus for supporting a back rest, a seat and a foot rest so that a user can sit thereon, A frame; A pair of wheels in the form of a hub and a spoke and freely rotatably mounted on both sides of the frame; A wheel rim mounted to the wheel for propelling and manipulating the wheelchair; And a guide roller mounted on at least three sides of the frame, respectively, for guiding and supporting the wheel so that the wheel can be rotated without being detached therefrom, and a guide roller positioned at the top of the guide rollers And a position variable device mounted on the frame and operable by an operation of a lever handle to restrict the position of the guide roller so that the wheel is not released or to change the position of the guide roller so as not to disturb the wheel And a wheelchair is provided.

Thus, the present invention is not only superior in durability and light weight, but also can smoothly and stably rotate the wheel, minimizing noise during traveling, and enabling easy attachment and detachment of the wheel, thereby greatly improving mobility and convenience.

In addition, in a preferred embodiment of the present invention, the position variable device comprises a mounting bracket for fixing the frame to the frame, a mounting bracket slidably mounted on the mounting bracket while the guide roller is mounted, A slide rail mounted between the mounting bracket and the moving bracket for guiding the moving bracket to smoothly move linearly with respect to the mounting bracket; And a clamp for locking the moving bracket so that the moving bracket can not be moved or releasing the locking state of the moving bracket. Thus, the position of the guide roller can be freely changed, As a result, it is possible to easily attach and detach the wheel It can greatly improve the performance convenience.

According to another aspect of the present invention, there is provided a moving bracket including: a slot hole formed in the moving bracket; at least one slot hole formed in the moving bracket; and a mounting bracket attached to the mounting bracket at a position corresponding to the slot hole, And a stopper for preventing excessive movement of the moving bracket by causing contact interference with one end portion of the slot hole at the time of disassembly of the wheel, thereby more efficiently and stably detaching the wheel.

An embodiment of the present invention having the means and construction for solving the above object and the technical solution to the above object is to provide a rolling bearing of the present invention which smoothly and stably rotates the wheel since the disc rail of the wheel smoothly contacts with the guide roller, Noise during driving can be minimized.

In addition, the guide rollers for guiding and supporting the wheel so that the wheel can be rotated without being dislocated can be moved as far as necessary from the wheel by a one-touch locking and unlocking method, It is possible to easily attach and detach a wheel when a wheelchair is mounted on a vehicle or when repairing a tire puncture or the like, thereby improving mobility and ease of use and reducing work time.

Here, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view illustrating a wheelchair according to an embodiment of the present invention.
FIG. 2 is a perspective view of a wheelchair component according to an embodiment of the present invention, in which the position variable device is exploded.
FIG. 3 is a side view showing a state in which a position variable device among wheelchair components according to an embodiment of the present invention is in a locked state and the wheel is not released.
4 is a local perspective view showing a state in which a wheel is not detached due to a locked state of a position variable device among wheelchair components according to an embodiment of the present invention.
FIG. 5 is a side view illustrating a state in which a wheel is disengaged from a wheel positioner according to an embodiment of the present invention.
FIG. 6 is a local perspective view illustrating a state in which a wheel is disengaged from a wheel positioner according to an embodiment of the present invention.
7 is a perspective view of a wheel of a wheelchair component according to an embodiment of the present invention.
8 is a perspective view illustrating a wheel and a guide roller among wheelchair components according to an embodiment of the present invention.
9 is an enlarged cross-sectional view of the locality of FIG.
10 is an enlarged cross-sectional view of the locality of FIG.
11 is an enlarged cross-sectional view of another local portion of Fig.
12 is a perspective view showing a part of a wheel of a wheelchair component according to an embodiment of the present invention.
13 is an exploded perspective view showing an enlarged view of a local portion of a wheel among wheelchair components according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described more specifically with reference to the accompanying drawings.

Prior to this, the following terms are defined in consideration of the functions of the present invention, and they are to be construed to mean concepts that are consistent with the technical idea of the present invention and interpretations that are commonly or commonly understood in the technical field of the present invention.

In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, when a part includes an element, it does not exclude other elements unless specifically stated otherwise, but may include other elements.

1 to 13, a wheelchair according to an embodiment of the present invention includes a frame 10, a pair of wheels 20, a plurality of guide rollers 30, and a position variable device 40 .

The frame 10 includes a seat for the user to sit on, a back rest for the user to sit back on, and a footrest 11 for the user to sit comfortably on his feet And is supported and supported.

A pair of right and left auxiliary wheels 12 are provided on the front side of the frame 10 to control the traveling direction of the wheelchair and to have a relatively small diameter as compared with the wheel 20.

A handle 13 is integrally formed at an upper rear portion of the frame 10 so that a protector or a caregiver can easily push or pull the wheelchair.

The frame 10 is formed so that the central portion of the wheelchair can be folded so as to be foldable for minimizing volume when the wheelchair is stored and moved.

Here, the auxiliary wheel 12 may employ a structure such as a conventional caster that allows the user to freely change the traveling direction freely when the wheelchair is advanced or retracted.

The frame 10 is preferably made of a hollow body made of a material such as stainless steel or a high-strength aluminum alloy. However, the frame 10 may be made of a metal or a synthetic resin material having excellent physical and mechanical properties such as durability and strength, The cross-sectional shape of the hollow body may be formed in various shapes such as a general circular shape or a rectangular shape as well as a structural strength and weight reduction.

The wheel 20 is freely rotatable on both the left and right sides of the frame 10 in such a manner that it has no hub and spoke so as to roll and load the load transmitted through the frame 10 while absorbing and absorbing the impact. Respectively.

The wheel 20 is provided with a wheel handle 28 for manually pushing the wheelchair to propel and operate the wheelchair.

The wheel 20 includes a tire 21, a rim 22 for supporting and supporting the tire 21, and a plurality of support blocks (not shown) fixed radially at regular intervals along the inner surface of the rim 22 And a pair of left and right disc rails 24 fixed on both sides of the support block 23 so as to rotate and reduce rotational friction while being in smooth contact with the guide rollers 30.

Support nuts 25 for maintaining the parallelism between the disc support members 23 and the disc support members 23 adjacent to each other are interposed at regular intervals , And the support nut (25) and the disk rail (24) are fastened by a bolt (27) in a bolting manner.

That is, the support block 23 and the support nut 25 are fixed with a bolt 27 between a pair of left and right disc rails 24 alternately spaced at a predetermined distance radially from the center of rotation of the wheel 20 have.

A pair of disk washers 26 reinforcing the strength are fixed between both sides of the rim 22 and both sides of the disk rail 24. [

The surface of the support block 23 opposite to the rim 22 may be formed in a shape corresponding to the outer circumferential surface of the rim 22 so as to achieve stable contact and a rigid fixed state or may be formed in a shape corresponding to the support block 23, It is preferable that the center portion of the rim 22 is supported at four points.

In addition, it is preferable that the disc rail 24 is made of a synthetic resin to reduce weight and reduce noise. That is, the disk rail 24 can be formed by injecting thermoplastic plastic into a metal mold. At this time, unnecessary thick parts can be lightened and maintained at a constant strength by wicking (hollow) and rib molding.

Further, the support block 23 may be formed of a square pipe for light weight, and the bolt 27 may be formed of a cross-head bolt for ease of assembly.

On the other hand, even if the rim 22, the support block 23, the support block 23, the disk rail 24 and the disk washer 26 are subjected to stress or shock, they are absorbed while a slight slip occurs It can be fixed and bonded by a riveting method which improves rigidity and reliability.

The guide rollers 30 are mounted on the both sides of the frame 10 at regular intervals of at least three to guide and support the wheel 20 so as to rotate without detaching it from place.

For example, the guide roller 30 may be disposed on each vertex or corner of a triangle of a triangle inscribed in a circle formed by the wheel 20.

The outer peripheral surface of the guide roller 30 is coated with rubber or synthetic resin to form a bushing 31 for absorbing and mitigating noise and impact.

That is, the bushing 31 is preferably made of an elastic material so as to absorb and mitigate noise and shock caused by contact with the disk rail 24 of the wheel.

Here, the guide roller 30 may adopt a structure in which a bearing for lubricating action is inserted for smooth rotation and free rolling motion.

The position variable device 40 is mounted on the frame 10 while freely rotatably mounting (mounting) the guide roller 30 located at the uppermost position among the guide rollers 30.

That is, the position variable device 40 is operated by the operation of the lever handle 45 so that the guide roller 30 positioned at the uppermost position at a predetermined position so that the wheel 20 is not separated from the frame 10 And when the wheel 20 is detached or attached, the guide roller 30 located at the uppermost position can be changed to a position that does not interfere with the removal and separation of the wheel 20.

Here, the position variable device 40 may employ an assembly form in which a plurality of parts are combined into a structure capable of performing one full function.

A mounting bracket 41 formed to be fixed to the frame 10 and a mounting bracket 41 mounted on the mounting bracket 41 with a guide roller 30 mounted thereon, And a slide rail 43 mounted between the mounting bracket 41 and the moving bracket 43 and guiding the moving bracket 43 to slide smoothly and linearly with respect to the mounting bracket 41. [ The hook 46 is locked to the moving bracket 43 by being hooked on the hook 42 by the operation of the lever handle 45 and operated by the leverage principle by the operation of the lever handle 45, And a clamp 47 for releasing the locked state.

At least one slot hole 48 is formed in the moving bracket 43. When the moving bracket 43 is moved beyond a predetermined range with respect to the mounting bracket 41, And a stopper 49 for preventing excessive movement of the moving bracket 43 by causing contact interference with one end portion of the movable bracket 48 is mounted.

The moving bracket 43 is provided with a cover 50 for supporting the guide roller 30 to be freely rotatable by the moving bracket 43 and a moving bracket 43 disposed around the guide roller 30, A plurality of sleeves 51 and a shaft 52 serving as rotation centers of the guide rollers 30 are provided between the covers 50 to provide a mounting space for the guide rollers 30. Both ends of the shaft 52 are moved And is attached to the bracket 43 and the cover 50.

That is, the guide roller 30 can freely rotate about the shaft 52 having one end fixed to the moving bracket 43, and can stably maintain its fixed state in the cover 50 and the sleeve 51 have.

Here, the mounting bracket 41 can be fixed and joined by a method such as bolting, welding or the like by placing the mounting bracket 41 at a predetermined mounting position of the frame 10.

In addition, the slide rail 44 can adopt a normal structure in which a ball bearing for restricting frictional resistance between the inner member and the outer member to smoothly perform sliding movement is retained in the retainer, and in addition, It is also possible to adopt an LM guide that guides the moving bracket 43 to slide smoothly and linearly with respect to the mounting bracket 41 by the sliding motion of the block.

The wheelchair according to another embodiment of the present invention configured as described above includes guide rollers 30 positioned at the top of the frame 10 among the guide rollers 30 that guide and support the wheel 20 so as to rotate without being detached The guide roller 30 located at the uppermost position can be easily moved away from the wheel 20 to release the restrained state of the wheel 20 if necessary, can do.

3 and 4, in order to position the uppermost guide roller 30 so that the wheel 20 rotates without being dislocated, the moving bracket 43 of the position adjusting device 40 is moved upward And the hook 46 of the clamp 47 mounted on the mounting bracket 41 is operated by the lever mechanism by the rotating operation of the lever handle 45 so that the hook of the moving bracket 43 It is possible to hold the predetermined position of the guide roller 30 by locking the movable bracket 43 so that the moving bracket 43 does not move.

5 and 6, in order to move the guide roller 30 to the position toward the center of the wheel 20 so that the wheel 20 can be detached from the frame 10 in this state, When the lever handle 45 of the movable bracket 43 is rotated to release the hook 46 of the movable bracket 43 from hooking the hook 46, The guide roller 30 attached to the moving bracket 43 is moved farther away from the wheel 20 so that the uppermost portion of the wheel 20 is inclined to the left and right at right angles The guide roller 30 can not be released by the guide rollers 30. As a result,

In this process, when one end of the slot hole 48 formed in the moving bracket 43 and the stopper 49 attached to the mounting bracket 41 at the corresponding position are in contact with each other The moving brackets 43 and the guide rollers 30 are rapidly lowered by the self weight and the slide rails 44 or the moving brackets 43 are moved downward by the self-weight and the slide rails 44 by preventing the moving brackets 43 from being excessively moved with respect to the mounting brackets 41, It is possible to prevent the hook 42 formed at the upper end of the clamp ring 43 from rising beyond the lockable distance with the clamp ring 46, thereby enabling the wheel 20 to be attached and detached more efficiently and stably.

Therefore, the wheel 20 can be easily and easily attached to and detached from the frame 10 for loading a wheelchair in a vehicle or repairing a tire puncture or the like.

Further, since the wheel 20 according to the embodiment of the present invention has no hub and spoke in the wheel 20, a weak user (passenger) such as a sick person or a patient with a handicap, 28), it is possible to prevent a safety accident such as a hand being caught in the spoke or being injured.

Further, when the user turns the wheel handle 28, the disk rail 24 of the wheel made of a synthetic resin material smoothly contacts with the bushing 31 of the guide roller 30 made of an elastic material, The rotation of the other wheel 20 is made more smooth and stable, so that noise during driving can be minimized.

The disk rail 24 and the rim 22 of the wheel are stably supported and parallel to each other by the support block 23 and the support nut 25 at a constant interval and are also supported by the disk washer 26 The strength is strengthened and the durability and light weight can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments or constructions. Various changes and substitutions may be made without departing from the spirit and scope of the invention. It will be obvious to those skilled in the art that the present invention can be widely applied to other embodiments.

Therefore, it is to be understood that modifications and variations of the features of the present invention are intended to be included within the spirit and scope of the present invention.

10: Frame 11: Footrest
12: Auxiliary wheel 20: Wheel
21: tire 22: rim
23: Support block 24: Disk rail
25: Support nut 26: Disc washer
27: Bolt 28: Wheel handle
30: guide roller 31: bushing
40: position variable device 41: mounting bracket
42: hook 43: moving bracket
44: slide rail 45: lever handle
46: collar 47: clamp
48: Slot hole 49: Stopper
50: Cover 51: Sleeve
52: Shaft

Claims (2)

A frame supporting a back rest, a seat and a foot rest so that the user can sit down; A pair of wheels in the form of a hub and a spoke, freely rotatably mounted on both sides of the frame and having a hand rim; A guide roller mounted on at least three sides of the frame to guide and support the wheel so as to rotate without detaching the wheel; And a guide roller disposed at an uppermost position of the guide rollers, and is operated by an operation of a lever handle to restrain the position of the guide roller so as to prevent the wheel from falling off, And a position variable device capable of changing the position of the guide roller so as not to change the position of the guide roller;
Wherein the position variable device comprises:
A mounting bracket for fixing to the frame;
A moving bracket slidably mounted on the mounting bracket with the guide roller mounted thereon, the moving bracket having a hook formed at an upper portion thereof;
A slide rail mounted between the mounting bracket and the moving bracket and guiding the moving bracket so as to smoothly move linearly with respect to the mounting bracket; And
A clamp mounted on the mounting bracket and hooked on a hook operated by an operation of a lever handle to lock or unlock the moving bracket;
And a controller for controlling the movement of the wheelchair.
The method according to claim 1,
At least one slot hole formed in the moving bracket;
Wherein the moving bracket is mounted on the mounting bracket at a position corresponding to the slot hole and causes contact interference with one end portion of the slot hole when the moving bracket moves over a certain range with respect to the mounting bracket to prevent an excessive movement of the moving bracket stopper;
Further comprising:

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