| 摘要 |
PURPOSE: A multi-mode wheel is provided to enhance flatland driving ability and obstacle pass ability with a least number of wheels without the size increase or the number increase of the wheels. CONSTITUTION: A multi-mode wheel comprises a first wheel frame(1) and a second wheel frame(2). The first wheel frame comprises first convex parts and a first concave part. The first convex parts are formed radially from the central axis(4). The first concave part is concavely formed between the convex parts. The second wheel frame comprises second convex parts and a second concave part. The second convex parts are formed radially from the central axis. The second concave part is concavely formed between the convex parts.
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