| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric wheelchair capable of travelling over stairs, steps or slopes with usual moving motion without special operations. SOLUTION: In the electric wheelchair, a chair 5e is mounted on parallelogramatic mounts 5a each of which has four corners of two pairs of right and left connected by rotary axes. By controlling the mounts 5a using a sensor that detects inclination of the front and back of a car body, such a structure of the mounts 5a allows the gravity center position and a seat of the chair 5e to move up and down while keeping their horizontal state. The electric wheelchair has two wheels 5b on each side which are suspended from the mount 5a by springs and are driven by a driving axis via a gear, a belt or a chain. COPYRIGHT: (C)2008,JPO&INPIT
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