JP2002209950A - Wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheelchair easily assembled into various sizes and solving a complicated assembling operation of a conventional wheelchair by preparing different-size components for the wheelchair, arbitrarily assembling them, and dispensing with preparing sufficient number of wheelchairs according to sizes. SOLUTION: A wheelchair body 10 is so formed that a rear sheet 11, casters 57, and driving wheels 56 are integrally connected together into a U-shaped plan view via both-side frames 17, and a chair member 20 is detachably attached through the opening side of the wheelchair body 10. A chair under side horizontal frame 24 is made to set along a wheelchair body under side horizontal frame 12, a rod member 31 is made to pass through a through hole 19 of a projection 18 and a chair side through hole 26 so that the frames are stably retained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair that can be folded in the width direction, and more particularly to an assembled wheelchair.

[0002]

2. Description of the Related Art Wheelchairs are inconvenient if they are not of a size suitable for the user's physique.

On the other hand, in various facilities such as nursing care facilities, wheelchairs are permanently installed for use by facility users.
Since this wheelchair is not exclusively used by individuals but used by unspecified persons of various sizes, a plurality of wheelchairs (for example, large, medium and small) having different sizes are prepared.

[0004] In this case, in order to avoid a situation in which the wheelchair runs short, it is necessary to prepare a sufficient number of vehicles for each size. Therefore, there is a problem that the total number of preparations increases and a large storage space is required.

On the other hand, it has been proposed to adjust the length of each part of the wheelchair or to change the size by replacing the part with a different size. According to such a wheelchair, a sufficient number of parts are required. Since it is not necessary to prepare for each time, the number of prepared vehicles can be reduced.

As a wheelchair whose size can be changed, for example, Japanese Patent Laid-Open Publication No. Sho 51-129053 (conventional example), the vertical frames 51 on both sides of the wheelchair are formed as double pipes (outer pipe 51a, inner pipe 51b). In this case, the size of the wheelchair is changed in the width direction by changing the opening angle of the folding mechanism (X portion) 53 of the wheelchair (FIG. 7: a conventional wheelchair). Front view).

In Japanese Patent Application Laid-Open No. Hei 5-176956 (conventional example), a wheelchair is composed of a main frame unit 61, a folding mechanism unit 62 and a front frame unit 6.
3 shows a configuration that can be disassembled into each part, different sizes are prepared for each part, and assembled as appropriate. As a method of assembling the wheelchair of this conventional example, the folding mechanism unit 62 is located at the front of the main frame unit 61, the front frame unit 63 is further located at the front, and the pipes of the respective frames are fitted in the front-rear direction. (FIG. 8: perspective view for explaining a method of assembling a wheelchair of a conventional example). Specifically, the lower connecting portion 61a of the main frame unit 61 and the connected portion 62a of the folding mechanism unit 62 are fitted, and the seat 5 is inserted into the receiving portion 61b of the upper horizontal pipe of the main frame unit 61.
4 and then the lower connecting portion 62c of the folding mechanism unit 62 and the lower connected portion 63c of the left and right front frame units 63 are fitted together and the upper connecting portion of the main frame unit 61 is connected. Part 61
d and the upper connected portions 63d of the left and right front frame units 63 are fitted respectively.

In FIGS. 7 and 8, reference numeral 55 denotes a backrest portion;
6 is a drive wheel (rear wheel), 57 is a caster (front wheel), and 58 is a footrest.

[0009]

However, the size changing operation of the above-mentioned conventional example is complicated, and the assembling operation of the conventional example is complicated, so that there is a problem that it is difficult to quickly produce a wheelchair of a required size. For example, in the above conventional example, when the folding mechanism unit 62 is mounted on the main frame unit 61, it is necessary to fit the lower connecting portion 61a and the connected portion 62a at the same time at two positions on the left and right sides, and the front frame unit 63
In mounting, the lower connecting portion 62c and the lower connected portion 63c, and the upper connecting portion 61d and the upper connected portion 63d
Must be fitted at two locations at the same time, and the operation is relatively difficult and troublesome.

It is an object of the present invention to provide a wheelchair which can be easily assembled and can be made in various sizes.

[0011]

A wheelchair according to the present invention comprises:
An assembling type wheelchair for assembling a foldable seat member having a seat seat so as to be detachable from a wheelchair main body, wherein the wheelchair main body includes a back seat, a front wheel, and a rear wheel via two side frames. Integrally connected in a U-shape, the stool is detachable through the open side of the wheelchair body, and the horizontal frame of the stool is aligned with the horizontal frame of the wheelchair body, and the The point is that the frame has a structure for stably holding these frames.

The point that needs to be changed the most depending on the difference in the physique of the user is the seat width of the stool portion.
As described above, in the present invention, the stool is detachable with respect to the wheelchair body, and replacement of stools of different sizes is facilitated.

Further, in the present invention, the engaging portion is provided on a horizontal frame of the wheelchair body and has a horizontal insertion hole, and a horizontal insertion hole formed on the horizontal frame of the seat member. And a rod member, the insertion hole (hereinafter, may be referred to as a main body insertion hole) of the protruding portion of the wheelchair main body horizontal frame, and the insertion hole (hereinafter, referred to as a stool side) of the stool member horizontal frame. It is preferable that the frames are held by inserting the rod member into the holes.

With such a configuration, the stool can be removed and attached from the wheelchair body by a simple operation of inserting and removing the rod member into and from the stool side insertion hole and the body insertion hole.

[0015] In addition, in the present invention, the rod member has a hole in the direction intersecting the axis near the insertion tip, and a stopper at the rear end of the insertion. It is preferable to have a retaining pin that can be inserted.

The stop prevents the rod member from passing through the seat-side insertion hole and the body insertion hole. In addition, by inserting a retaining pin into the hole near the insertion tip, it is possible to prevent the rod member inserted into the insertion hole from coming off.

Further, in the present invention, it is preferable that the projecting portion projects from the wheelchair main body horizontal frame within a range from directly above to an inner horizontal direction.

When mounting a wheelchair on a car,
Although the wheelchair will be folded in the width direction, if the protrusions protrude below the wheelchair main body horizontal frame, it becomes difficult to fold in the width direction,
This is because, in the case where the projection extends from directly above to the inner horizontal direction as described above, it does not hinder the folding.

In the present invention, it is preferable that a plurality of the protrusions are provided.

This is because, when the stool is attached to the wheelchair body, it can be more stably and firmly attached at a plurality of locations.

[0021]

FIG. 1 is a perspective view for explaining a method of assembling a wheelchair according to an embodiment of the present invention. 2 and 3 are enlarged perspective views of the main parts for explaining the assembling method. FIGS. 4 and 5 are also diagrams for explaining how to assemble, and are perspective views of the wheelchair viewed from the lower front.

The wheelchair body 10 includes a cloth back seat 11, left and right casters (front wheels) 57, and left and right drive wheels (rear wheels) 5.
6 and left and right footrests 58, which are connected in a U-shape in plan view via left and right side frames 17.

The side frame 17 is a lower horizontal frame (hereinafter sometimes referred to as a main body lower horizontal frame).
12 and an upper horizontal frame (hereinafter sometimes referred to as a main body upper horizontal frame) 13 are welded to three vertical frames 14, 15, and 16, respectively. Is attached, and the back seat 11 is attached above the rear vertical frame 14. The back sheet 11 has a male fastener of a hook-and-loop fastener sewn near the left and right edges thereof, and a female fastener of a hook-and-loop fastener is further sewn from the center thereof. The hook of the hook-and-loop fastener is locked by winding the pole. A caster 57 is attached to the central vertical frame 15, and a footrest 58 is attached to a lower end of the front vertical frame 16.

The main body lower horizontal frame 12 is provided with a protruding portion 18 extending inward in the horizontal direction, and has a horizontal insertion hole (main body insertion hole) 19 in the front-rear direction. Is formed so as to pass through. The main body upper horizontal frame 13 is provided with two receiving portions 29 projecting inward.

Since the wheelchair main body 10 has no support in the lateral width direction and has only the back sheet 11 made of cloth, it is easy to fold in the lateral width direction to reduce the width. The back sheet 11 is detachable by the hook-and-loop fastener as described above.
The side frames 15 with the rear wheels 57 and 56 may be stored while being superposed on the left and right.

The seating member 20 is obtained by attaching a seat 21 to a folding mechanism 22.
Reference numeral 2 denotes two sets of X sections 23 each having two pipes crossed, and a lower left and right horizontal frame (hereinafter, sometimes referred to as a stool lower horizontal frame) 24 and upper left and right horizontal frames (hereinafter referred to as a stool upper side). Horizontal frame)
25 are respectively welded. Sasa seat 21
Is fixed to the folding mechanism 22 by hooking a hole member (not shown) formed on the back surface of the seat sheet 21 on a hook-shaped member (not shown) provided on the upper side surface of the upper stool upper horizontal frame 25. Is done.

A horizontal insertion hole (seat-side insertion hole) 26 is formed in the lower stool horizontal frame 24 in the front-rear direction (FIG. 2). Further, an opening prevention member 27 is attached to the X portion 23 (FIGS. 4 and 5).

The seat member 20 can be folded in the width direction by closing the X portion 23 vertically, and the cloth seat 21 is also folded at this time. The seat 21 may be removed from the folding mechanism 22 and stored separately.

The wheelchair is provided with two rod members 31 separately.
The main body is prepared and has a diameter such that it can be inserted into the main body insertion hole 19 and the seat side insertion hole 26. A hole 32 is formed in the vicinity of the insertion end of the rod member 31, and a stopper 33 having a large diameter is formed at the rear end of the insertion.

Next, a method of attaching the seat member 20 to the wheelchair body 10 will be described.

First, the seat member 20 is slightly folded and inserted between the open portions of the wheelchair body 10, that is, the left and right side frames (arrow A shown in FIG. 1), and the seat lower lower horizontal frame 24 is placed on the lower side of the body. It is located between the two protrusions 18 of the horizontal frame 12 (arrow B shown in FIG. 2). Next, the rod member 31 is passed through the main body insertion hole 19 of the projecting portion 18 and the stool side insertion hole 26 of the lower stool horizontal frame 24 (arrow C shown in FIG. 2 and arrow C shown in FIG. 3A).
At this time, further insertion of the rod member 31 is stopped by the stopper 33. Then, a retaining pin 34 is inserted into the hole 32 of the rod member 31 (FIG. 3B: perspective view from the insertion destination side of the rod member 31). This prevents the rod member 31 from coming off.

The above operation is performed on both the left and right sides, and the lower horizontal frame 24 is fixed to the lower horizontal frame 12 (FIG. 4). Next, the tip of the stopper 27 is fixed to the main body upper horizontal frame 13 with a pin.

Thereafter, the stool upper horizontal frame 25 is placed so as to be fitted into the curved inside of the receiving portion 29 (FIG. 5), and the assembly is completed. At this time, the seat 21 is stretched without slackening. Back seat 11
Can be used to remove the engagement of the hook-and-loop fastener in advance to make the back sheet width of the finished size, or to release the hook-and-loop fastener of only the right side, for example.
After the mounting of No. 0 is completed, it is preferable to engage the right side surface fastener with the desired back seat width.

The method for removing the seat member 20 from the wheelchair body 10 is the reverse of the above-described steps.

As described above, the wheelchair body 10 of the seat member 20
The operation is as simple as inserting and removing the rod member 31 and attaching and detaching the retaining pin 34 to and from the rod member 31.

FIG. 6A is a perspective view showing a wheelchair in which a large-sized (for example, seat width W ₁ : 40 cm) stool 20 is mounted on the wheelchair main body 10, and FIG. size (eg seat width W _2: 38cm) is a perspective view showing a wheelchair the sitting member 20 is mounted in.

The size can be easily changed simply by replacing the stool 20 with a different size. Therefore, simply preparing one wheelchair main body 10 and two large and small stool members 20 is the same as preparing two large and small wheelchairs, thereby reducing the storage space.

In addition to the caster 57 and the X section 23, the parts where failures are likely to occur during use are not limited to the assembly type.
However, in the present embodiment, since the removal and attachment of the stool member 20 is simple as described above, the failed X portion 23 (stool member 20) can be easily replaced with a new one.

As described above, regarding the wheelchair according to the present invention,
Although the present invention has been specifically described with reference to the drawings showing examples, the present invention is not necessarily limited to the illustrated examples, and it is also possible to implement the present invention with appropriate modifications within a range that can be adapted to the above-mentioned purpose. And they are all included in the technical scope of the present invention.

For example, in the above example, two sets of X parts 23 are welded to the lower horizontal frame 24. However, the present invention is not limited to this, and one set of X parts 23 is welded to the lower horizontal frame 24. And so on.

[0041]

In the wheelchair according to the present invention, since the stool can be easily attached to and detached from the wheelchair body, the size of the wheelchair can be easily and quickly changed by, for example, replacing the stool with a different size. it can. Therefore, even if you do not prepare a sufficient number of wheelchairs for each size in facilities etc., if you prepare a sufficient amount of seating members of different sizes,
The wheelchair body is the same and can cover various sizes, and the storage space can be reduced. In addition, according to the present invention, a portion of the stool (for example, X
When the part) breaks down, it is easy to replace the seat member with a new one.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining how to assemble a wheelchair according to an embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view for explaining how to assemble the wheelchair according to one embodiment of the present invention.

FIG. 3 is a partially enlarged perspective view for explaining how to assemble the wheelchair according to one embodiment of the present invention.

FIG. 4 is a perspective view for explaining how to assemble the wheelchair according to the embodiment of the present invention (a perspective view of the wheelchair as viewed from the lower front).

FIG. 5 is a perspective view for explaining how to assemble the wheelchair according to one embodiment of the present invention (a perspective view of the wheelchair as viewed from the lower front).

6A is a perspective view showing a wheelchair in which a large stool is attached to a wheelchair body, and FIG. 6B is a perspective view showing a wheelchair in which a small stool is attached to the same wheelchair as in FIG. .

FIG. 7 is a front view showing a conventional wheelchair.

FIG. 8 is a perspective view for explaining a method of assembling a wheelchair of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wheelchair main body 11 Back seat 12 Lower horizontal frame 13 Upper horizontal frame 14, 15, 16 Vertical frame 17 Side frame 18 Projection part 19 Main body insertion hole 20 Stool member 22 Folding mechanism part 23 X part 24 Stool lower horizontal frame 25 Stool upper horizontal frame 26 Stool side insertion hole 27 Opening prevention member 29 Receiving part 31 Bar member 32 Hole 33 Stopping part 34 Retaining pin

Claims (5)

[Claims] 1. An assembling wheelchair in which a foldable seat member having a seat is detachably mounted to a wheelchair main body, wherein the wheelchair main body has a back seat, a front wheel, and a rear wheel on both side frames. Are connected integrally in a U-shape in plan view, the stool is detachable through the open side of the wheelchair body, and the horizontal frame of the stool is arranged along the horizontal frame of the wheelchair body; A wheelchair having a structure for stably holding these frames via an engaging portion. 2. A projecting portion provided on a horizontal frame of the wheelchair main body, the projecting portion having a horizontal insertion hole,
A horizontal insertion hole formed in the horizontal frame of the stool member, and a rod member. The insertion hole of the protrusion of the wheelchair main body horizontal frame, and the insertion hole of the stool member horizontal frame. The wheelchair according to claim 1, wherein the frames are held by inserting the rod member. 3. The rod member has a hole in the direction intersecting the axis near the insertion end thereof, and a stopper at the rear end of the insertion, so that the hole can be inserted through the hole. 3. The wheelchair according to claim 2, comprising a locking pin. 4. The wheelchair according to claim 2, wherein the projecting portion projects from the wheelchair main body horizontal frame within a range from directly above to an inner horizontal direction. 5. The wheelchair according to claim 2, wherein a plurality of said protrusions are provided.