JPH03178Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a mechanism for attaching the main wheels of a wheelchair.

[Conventional problems]

2. Description of the Related Art Wheelchairs with main wheels that are tilted downward and open downward are used as wheelchairs for sports such as basketball, marathon, and tennis for people with physical disabilities. This inclination of the main wheels increases the stability of the wheelchair and prevents it from tipping over when turning or the like.

However, in the case of the above-mentioned wheelchair, the main wheels are fixed in an inclined position with the main wheels opening downward, so the width of the wheelchair becomes large. There was a problem in that it came into contact with the door and damaged it.

[Means for solving problems]

The present invention is a means for solving the above-mentioned conventional problems, and a bearing plate 1 is attached to both sides of the wheelchair so as to be rotatable around the center. Bearings into which the axles 17 of the main wheels 16 are fitted are provided, respectively, and the bearing plates 1 can be fixed by a fixing means in a state where the front surface 2 is located on the side surface and a state where the back surface 3 is located on the side surface. The main wheel 16 is attached to a bearing portion provided on one surface 2 with one surface 2 located on the side surface.
When the axle 17 of the main wheel 16 is fitted, the main wheel 16 is in a downwardly inclined state, and when the other surface 3 is located on the side surface, the main wheel 16 is attached to the bearing provided on the other surface 3. When the axle 17 is fitted, the main wheel 16 is in a vertical position, providing a main wheel attachment mechanism for the wheelchair.

[Effect]

When one side of the bearing plate rotatably attached to both sides of the wheelchair is fixed to the side of the wheelchair, when the axle of the main wheel is fitted to the bearing part of the one side, the main wheel is installed in a tilted position that opens downward. When the bearing plate is rotated and the other side is fixed on the side of the wheelchair, the axle of the main wheel is fitted into the bearing portion of the other side, and the main wheel is mounted vertically.

[Effect of idea]

Therefore, according to the present invention, it is possible to install the wheelchair in either an inclined position or a vertical position, opening below the main wheels of the wheelchair. After the wheelchair is used for sports in an inclined position with the main wheels opened downward, the width of the wheelchair can be reduced by mounting the main wheels in a vertical position, which does not become a hindrance to movement indoors. There is no.

〔Example〕

The present invention will be described with reference to an embodiment shown in FIGS. 1 to 6. Reference numeral 1 denotes a bearing plate, and a support cylinder 6 in which a through hole 6A is formed is provided in the center of the back surface 3. A pair of holes 7, 7, 8, 8 are formed on both left and right edges. A bearing tube 4 through which a fitting hole 4A passes through is tilted upward at a predetermined angle at the lower right portion of the front surface 2 of the bearing plate 1, and a bearing tube 4 through which a fitting hole 5A passes through the upper right portion of the back surface 3. 5 is the bearing plate 1
It is presented orthogonally to the

As shown in FIG. 3, the frames on both sides of the wheelchair are made up of vertical frames 10, 11 and horizontal frames 12, 13 extending between the vertical frames 10, 11, and the vertical frame 11 has a pair of holes 11A, 11A. is provided, and the horizontal frame 1
2 and 13 are provided with holes 12A and 13A. The bearing plate 1 is connected to the hole 12 of the horizontal frame 12.
A. It is rotatably supported by a support rod 14 extending between the through hole 6A of the support cylinder 6 of the bearing plate 1 and the hole 13A of the horizontal frame 13.

In the above configuration, as shown in FIGS. 3 and 4, the surface 2 of the bearing plate 1 is positioned on the outside of the wheelchair, and the pair of holes 7, 7 formed on the right side edge of the surface 2 are inserted. A pair of holes 1 in the vertical frame 11 of the frame
1A, 11A facing each other from the outside, bolts 14,
14 and nuts 15, 15, the bearing plate 1 is fixed. At this time, since the bearing sleeve 4 extended from the surface 2 of the bearing plate 1 is inclined upward by a predetermined angle θ, the fitting hole 4 of the bearing sleeve 4
When the axle 17 of the main wheel 16 is fitted to A, the main wheel 16
is installed in an inclined state, opening downward by a predetermined angle θ, as shown in FIG. Here, since the bearing tube 4 protrudes outward from the side surface of the wheelchair, even when the main wheel 16 is attached, the upper part of the main wheel 16 is prevented from interfering with the frame of the wheelchair. Next, remove the bolts 14, 14 and nuts 15, 15 that fix the bearing plate 1, and attach the bearing plate 1 to the support tube 6.
180° so that the back surface 3 of the bearing plate 1 is located on the outside of the wheelchair. Then, the pair of holes 8, 8 formed on the right side edge of the back surface 3 are opposed from the inside of the pair of holes 11A, 11A of the vertical frame 11 of the frame, and the bolts 14, 14 and nuts 15,
By tightening at 15, the bearing plate 1 is fixed. At this time, the bearing sleeve 5 extended from the back surface 3 of the bearing plate 1 is extended horizontally, so when the axle 17 of the main wheel 16 is inserted into the insertion hole 5A of the bearing sleeve 5, the main wheel 16 is moved as shown in FIG. Mounted in vertical position as shown.

In addition, as shown in FIG. 6, the axle 17 of the main wheel 16 has protrusions 17A, 17 that can be retracted and retracted by elastic force.
A is provided, and the axle 17 is connected to the protrusion 17.
A, 17A are the fitting holes 4 of the bearing tubes 4, 5 of the bearing plate 1
The fitting hole 4 is locked by being locked at the periphery of A and 5A.
Attached to A, 5A.

In addition to the embodiments described above, the present invention may be mounted by, for example, making the bearing cylinder into a bolt shape, screwing it into a bolt hole provided in the bearing plate, and tightening and fixing it with a nut. In this case, the mutual mounting width of the main wheels 16 can be adjusted by adjusting the mounting depth of the bearing sleeve.

[Brief explanation of the drawing]

Figures 1 to 6 show an embodiment of the present invention, with Figure 1 being a perspective view of the bearing plate, Figure 2 being a plan view of the bearing plate, and Figure 3 showing the bearing plate attached to the frame of the wheelchair. Figure 4 is an explanatory diagram when the main wheel is installed in an inclined position with the main wheel open downward. Figure 5 is an explanatory diagram when the main wheel is installed in a vertical position. Figure 6 is an explanatory diagram when the main wheel is installed in a vertical position. FIG. 3 is an explanatory diagram of a state in which a wheel axle is attached. In the figure, 1... Bearing plate, 2... Front surface, 3... Back surface, 4, 5... Bearing tube, 6... Support tube, 7, 8...
... hole, 10, 11 ... vertical frame, 12, 13 ... horizontal frame, 12A, 12A ... hole, 14 ... bolt,
15...nut, 16...main wheel, 17...axle.

Claims (1)

[Scope of utility model registration request] Bearing plates are attached to both sides of the wheelchair so as to be rotatable about the central part, and bearing portions into which the axles of the main wheels are fitted are provided on the front and back surfaces of the bearing plates, respectively. A bearing that can be fixed by a fixing means in a state where the front surface is located on a side surface and a state where the back surface is located on a side surface, and which is provided on the one surface with the one surface located on the side surface. When the axle of the main wheel is fitted to the bearing section, the main wheel is in a downwardly inclined state, and when the other surface is located on the side surface, the axle of the main wheel is attached to the bearing section provided on the other surface. A main wheel attachment mechanism for a wheelchair, characterized in that the main wheel is in a vertical state when the main wheel is fitted.