| 摘要 |
PURPOSE: A wheel chair is provided to separate a driving shaft and a driving wheel as to selectively drive the wheel chair in which a fork wheel of a first driving wheel serves to jump stairs or an obstacle, and a running driving wheel of a second driving wheel serves to normally run the wheel chair. CONSTITUTION: The wheel chair includes a frame, a driving shaft, a fork driving wheel(3), a running driving wheel(4), an electric driving system, a break and slip locker, a wheel converter and an auxiliary wheel frame. The driving shaft consists of a lift wheel driving shaft, linear wheel driving shaft, and a main driving shaft. The fork driving wheel has a fork wheel, a driving gear, a sprocket and gear, a connecting chain, and a main wheel sprocket. The running driving wheel has a running wheel, a sprocket, a one-way chain, a running subgear and sprocket and main gear, a connecting chain and a running driving main wheel sprocket.
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