| 摘要 |
A wheel chair comprises a chassis (2) and, arranged thereat, small front and rear wheels (4 and 5 respectively) and big wheels (6) for displacement of the wheel chair by manual power from a person sitting therein. The wheel chair is convertible between a first operational state, in which it rests on the ground solely by means of the front and rear small wheels (4 and 5 respectively) and a second operational state, in which it rests on the ground by means of, on one hand, either the small front and rear wheels and, on the other hand, the big wheels (6). Furthermore, the wheel chair (1) comprises a device (10) operable to act between the chassis (2) and ground (9) to lift the chassis to provide an operational state converting position, in which the wheel chair (1) rests on the ground by means of the lifting device, which is adapted, in this position, to counteract relative movement between the wheel chair and the ground, and the small front and/or rear wheels while lifting at least one of them and at least one of the big wheels out of contact with the ground. |
