JP3031277U - wheelchair - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To obtain a wheelchair whose impact is mitigated as much as possible when driving on a rough road or a stepped road. Buffer means is provided between a vertical main frame of a wheelchair and an axle of a wheel.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a wheelchair provided with a shock absorber mechanism on a wheelchair axle that is manually or electrically driven.

[0002]

[Prior art]

 In general, as shown in FIGS. 4 and 5, whether the vehicle is a wheelchair for self-driving or a care wheelchair, whether it is electric or manual, the axle 8 of the wheel 1 of the wheelchair A has a rear vertical main body. It is constructed so as to be directly pivotally attached to an axle bearing 15 fixed to the frame 2. In the drawings, the same reference numerals in the embodiments described later indicate those having the same configuration.

[0003]

[Problems to be solved by the device]

 According to the above-mentioned conventional wheelchair, the impact on the wheelchair due to running on a bad road or a step on the road is directly transmitted to the user of the wheelchair, which is not a comfortable riding center for the wheelchair user and also a physical burden. There was a big problem.

[0004]

[Means for Solving the Problems]

 The present invention is a vertical main frame to which the axle of a wheelchair can be attached in order to reduce the impact on the user's body as much as possible even when driving on a rough road or a place with a step, so that the wheelchair axle can be mounted. A cushioning means is provided between the wheelchair and the wheelchair axle to reduce the impact. In this way, by providing a cushioning means between the vertical main frame of the wheelchair and the axle, the shock received by the wheel is mitigated, it is not directly transmitted to the user, the physical burden is reduced and the wheelchair is comfortable to ride. Will be obtained.

[0005]

[Embodiment of device]

 In the wheelchair according to the present invention, a guide frame is provided side by side with a bracket in parallel with a vertical main frame to which an axle is attached, and an axle bearing is laid vertically between the main frame and the guide frame. In addition, the buffer means is provided on at least one of the main frame between the bracket and the wheel bearing or the guide frame between the bracket and the wheel bearing.

The buffer means may be a coil spring, a bamboo shoot spring, a leaf spring, a spiral spring, or another spring material, or an elastic material such as rubber, or a fluid such as an oil cylinder or an air cylinder as long as it has a buffer effect. However, it is preferable to use a means having a high buffering effect as much as possible. Further, in order to further enhance the cushioning effect, it is possible to provide cushioning means to the front wheels or auxiliary wheels.

When the wheelchair configured as described above is used, when the wheel is impacted by a step on a road surface or a bad road, the axle bearing moves up and down along the main frame and the guide frame. The shock absorbing means provided on the main frame or the guide frame works so as to absorb the shock.

[0008]

【Example】

 An embodiment of a wheelchair according to the present invention will be described below with reference to the drawings. 1 and 2, the vertical main frame 2 to which the wheel 1 of the wheelchair A is attached is guided in parallel to the main frame 2 via a pair of upper and lower brackets 3 and 4 fixed to the main frame 2, respectively. The frame 5 is fixed. An axle bearing 6 is vertically laid across the main frame 2 and the guide frame 5, and a coil spring 7 is interposed between the upper bracket 3 and the axle bearing 6.

A shaft hole 9 is bored in the central portion of the axle bearing 6, and an axle 8 of the wheel 1 is fixed to the axle hole 9 by penetrating it in a normal manner. In the figure, 10 is a spoke that connects the rim 11 of the wheel 1 and the boss 12, 13 is a seat, and 14 is a front wheel.

Although the coil spring 7 is used as the cushioning means in this embodiment, as long as it has a cushioning effect, springs such as bamboo shoot springs, leaf springs and spiral springs, elastic materials such as rubber can be used. It is needless to say that the cushioning means may be made of a material, and a cushioning means using a fluid such as an oil cylinder or an air cylinder may be attached by a usual means, and this cushioning means may be provided on the front wheel 14 of the wheelchair A. is there .

[0011]

[Effect of device]

 The present invention is implemented in the form as described above, and has the following effects. By providing the cushioning means between the vertical frame of the wheelchair body and the wheel bearings, even if a shock is applied to the wheels due to running on a bad road or a step on the road, the shock is absorbed by the cushioning means. Since it is not directly transmitted to the body of the user of the wheelchair, the ride is comfortable and the physical burden is significantly reduced. As the mounting structure of the cushioning means, the existing wheelchair can be easily modified since it consists of a pair of brackets, a guide frame, an axle bearing and a simple member of the cushioning means.

[Brief description of drawings]

FIG. 1 is an overall side view showing an embodiment of a wheelchair according to the present invention.

FIG. 2 is a perspective view showing an embodiment of a cushioning means mounting portion.

FIG. 3 is a side view showing a state in which an axle portion of a wheel is attached to the cushioning means attachment portion of FIG.

FIG. 4 is an overall side view showing an example of a conventional wheelchair.

5 is an enlarged explanatory view of an axle portion of a wheel in FIG. 4. FIG.

[Explanation of symbols]

 A ... Wheelchair 2 ... Main frame 3, 4, ... Bracket 5 ... Guide frame 6 ... Axle bearing 7 ... Coil spring (buffering means) 8 ... Axle

Claims (2)

[Scope of utility model registration request] 1. A guide frame (5) is provided side by side with a bracket (3) (4) in parallel with a vertical main frame (2) to which an axle (8) is mounted, and the main frame (2) and the guide frame (5). ) Over the bearing (6)
And a bracket (3)
At least one of the main frame (2) between the (4) and the axle bearing (6) or the guide frame (5) between the brackets (3) (4) and the axle bearing (6) is provided with a buffer means (7).
A wheelchair characterized by the provision of. 2. A cushioning means (7) is an elastic material such as a coil spring, a bamboo shoot spring, a leaf spring, or an oil cylinder,
2. A buffering means using a fluid such as an air cylinder.
Wheelchair listed.