JPH01320056A

JPH01320056A - Level difference getover device of motor-driven wheelchair

Info

Publication number: JPH01320056A
Application number: JP15433188A
Authority: JP
Inventors: Yukinobu Takeyama; 竹山　征伸
Original assignee: Suzuki Motor Corp
Current assignee: Suzuki Motor Corp
Priority date: 1988-06-22
Filing date: 1988-06-22
Publication date: 1989-12-26

Abstract

PURPOSE:To permit one mechanism to function both as getting over a level difference and preventing tracking-off of a wheel by installing two pulleys rotatably at the side of a caster to support the front wheel in such a way that an appropriate spacing is reserved, and by setting a belt thereover. CONSTITUTION:A plate 6 is installed on a caster 2 to support a front wheel 1 with a bolt 5 and a co-fastening screw by a wheel shaft 4. Shafts 8, 9 provided with thread at the tips are studded on this plate 6 by means of welding and supporting V-pulleys 10, 11 rotatably. A V-belt 13 is set over these pulleys 10, 11 at an angle alpha to road surface. Thereby the drive force of the motor-driven wheelchair concerned is divided onto the V-belt 13, and going up the level difference B can be done without friction with the road surface A width the aid of this V-belt 13 rotating.

Description

【発明の詳細な説明】（産業上の利用分野）本発明は、電動車椅子の段差乗越装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a step-crossing device for an electric wheelchair.

（従来の技術）重積ｒのうち電動式のものは、手動式のもののように介
添え者が付くことが少ないので、走行中に段差があった
り、溝に落ちそうになったときに独力でこれを乗越える
必要が生ずる。そこでこのための種々の構造が案出され
ている（段差乗越装置について実開昭５９−１５４２３
４号参照）。溝への落輸防１１−機構としては、第５図
に示すように前輪１のキャスタ２の側部にローラ３を回
転自在に設けたものがある。１ｉ；１記公報のものは電
動車椅子が段差にきたとき、キャスタに取付けたクライ
マが作動して前輪を段の上に乗り上げる作動をし、−方
、第５図のものは、キャスタ２に取付けたローラ３が、
ｆｌｉｔ輪１が溝に落輪しそうになったとき、ローラ３
がこれを防ぐことになる。(Conventional technology) Electric-operated trucks do not require a helper like manual-operated trucks, so if you run across a step or are about to fall into a ditch, you can help yourself. It becomes necessary to overcome this. Therefore, various structures for this purpose have been devised (Japanese Utility Model Application No. 59-15423 regarding a step-crossing device).
(See No. 4). As shown in FIG. 5, a mechanism for preventing falling into a groove 11 has a roller 3 rotatably provided on the side of a caster 2 of a front wheel 1. 1i; In the case of the electric wheelchair in Publication No. 1, when the electric wheelchair comes to a step, the climber attached to the casters operates to lift the front wheels onto the step, while the one in Figure 5 is attached to the casters 2 Roller 3 is
When flit wheel 1 is about to fall into the groove, roller 3
will prevent this.

（発明が解決しようとする課題）！−記二つの先行技術ともそれぞれの効果はあるものの
１段差乗越えと落輪防ｌトの両方を適えることはできな
かった。本発明はこの点に鑑みて成されたものであり１
両方の効果を得られる装置を提供することを解決課題と
する。(Problem that the invention seeks to solve)! -Although both of the above mentioned prior art techniques have their respective effects, they cannot provide both the ability to overcome a one-step difference and the prevention of falling wheels. The present invention has been made in view of this point, and 1
The problem to be solved is to provide a device that can obtain both effects.

（課題を解決するための手段）本発明は、上記課題を解決するための手段として、電動
車椅子の前輪ｌを支持するキャスタ２の側部に適当な間
隔を設けて２個のプーリ（■プーリＩｎ、　Ｉ＋）を回
転自在に取付け、この２個のプーリにベルト（■ベルト
＋３）を掛渡した構成としたものである。(Means for Solving the Problems) As a means for solving the above problems, the present invention provides two pulleys (Pulleys In, I+) are rotatably mounted, and a belt (■belt+3) is wrapped around these two pulleys.

（作用）このような構成とすれば、２個のプーリに掛は渡された
ベルトが無端軌条の作用をし、前輪の段差乗りげと落輪
防止とを行なうことになる。(Function) With this configuration, the belt that is passed around the two pulleys acts as an endless track, and prevents the front wheel from riding on a step and from falling.

（実施例）以下、本発明の一実施例を第１図ないし第４図について
説明すると、この場合の前輪１を支持するキャスタ２に
は、ホイールシャフト４による共線めねじとボルト５と
により、プレート６が取付けられている。７はナツトで
ある。プレート６には先端にねじを刻設したシャフト８
．９が溶接によって植立されており、このシャフト８．
９に■プーリ１０．　Ｉ＋が回転自在に支持されている
。１ｚは抜ＩＦめ川のナツトである。■プーリｔｏ、　
Ｉ＋にはＶベルト１３が掛は渡されている。シャフト８
．９は段付きになっており、Ｖベルト１３を掛は渡して
もプレート６に当接しないようになっている。(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4. In this case, the caster 2 supporting the front wheel 1 has collinear female threads formed by the wheel shaft 4 and bolts 5. , plate 6 is attached. 7 is Natsuto. The plate 6 has a shaft 8 with a threaded end.
．． 9 is installed by welding, and this shaft 8.
9 ■Pulley 10. I+ is rotatably supported. 1z is Natsuto from Nuki IF Megawa. ■Pulley to,
A V-belt 13 is attached to I+. shaft 8
．． 9 is stepped so that it does not come into contact with the plate 6 even if the V-belt 13 is passed over the hook.

Ｖブー９１０．１１にＶベルト１３を掛は渡すとき。When passing the V belt 13 to the V boo 910.11.

第２図に示すように、路面に対して角度ａを持たせであ
る。これにより、電動車椅子の駆動力がＶベルト１３に
分力され、回転するＶベルト１３で路面Δとの摩擦なく
、段差１３を」、ることかできる。このときのホイール
シャフト４とＢ点とを結ぶ線と路面Δに直行する線との
角度がβである。高さ１１は面幅ｌで乗越えられる高さ
である。As shown in FIG. 2, it is set at an angle a with respect to the road surface. Thereby, the driving force of the electric wheelchair is divided into the V-belt 13, and the rotating V-belt 13 can cross the step 13 without friction with the road surface Δ. At this time, the angle between the line connecting the wheel shaft 4 and point B and the line perpendicular to the road surface Δ is β. The height 11 is the height that can be overcome by the surface width l.

このように構成されたこの段差２乗越装置は、走行中に
段差にきたとき、Ｖベルト１３がこれに対応して回転し
、この段差を乗越える。また溝に遭遇したときには、Ｖ
ベルト１３が第５図に示した従来技術におけるローラ３
と同様な作用をして、ｔ１■に落ちるのを防１１−する
。In this device configured as described above, when the vehicle comes to a step while traveling, the V-belt 13 rotates in response to the step, and the vehicle gets over the step. Also, when you encounter a groove, V
The belt 13 is the roller 3 in the prior art shown in FIG.
It has the same effect as 11- to prevent falling to t1■.

（発明の効果）本発明は以」ユ説明したように構成された電動車椅子の
段差乗越装置であるから、一つの機構で段差乗越えと落
輸防１ｈの両方の作動を得ることができる。そしてベル
トにより段差乗越えなするので１段差に（りｉ突したと
きの衝撃が小さい。構造が筒？１１であるから、コスト
が安〈実施できる。(Effects of the Invention) Since the present invention is a step-climbing device for an electric wheelchair configured as described below, it is possible to obtain both step-climbing and fall protection 1h operations with one mechanism. And since the belt does not go over the level difference, the impact when bumping into one level difference is small.The structure is cylindrical, so the cost is low and it can be implemented.

[Brief explanation of the drawing]

第１図は本発明の一実施例の正面図、第２図は第１図の
ものの側面図、第３図は第２図のものを分解状態で示し
た斜視図、第４図は本発明を適用した電動車椅子の斜視
図、第５図は従来の段差乗越装置の要部斜視図である。ｌ・・・前輪２・・・キャスタ６・・・プレート８．９−Ｖプーリ＋３−Ｖベルト特　許　出願人　銘木自動＋１（玉業株式会社才３図FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a side view of the embodiment of the invention, FIG. 3 is an exploded perspective view of the embodiment of FIG. 2, and FIG. 4 is an exploded perspective view of the embodiment of the invention. FIG. 5 is a perspective view of a main part of a conventional step-crossing device. l...Front wheel 2...Caster 6...Plate 8.9-V pulley + 3-V belt Patent Applicant: Seiki Automatic +1 (Gyokuyo Co., Ltd. Sai 3 figure)

Claims

[Claims]

(1) An electric wheelchair characterized in that two pulleys are rotatably attached at an appropriate interval to the sides of casters that support the front wheels of the electric wheelchair, and a belt is wrapped around the two pulleys. Step-crossing device.