| 摘要 |
There is provided a wheelchair for patients or for special needy people capable of climbing stairs up or down. The principle of the stair-climbing-mechanism is built on partial rubber flexible wheels which are able to be pressed towards the wheel axis and are form locking to the edges of the stairs to climb. Each wheel is supplied with separate electric motors. The wheelchair is provided with one or two smart rotating lifts (8). To allow more comfort for the user and to prevent him from falling down, the wheelchair is supplied with a special suspension and control system to guarantee more stability by keeping its seat (1) horizontal even if it is moved along a slope ways.
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