| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a 6-wheeled chair having a caster support shaft for a rear wheel (an auxiliary wheel) which is retained in the vertical state even when getting over a step, so that the wheelchair is turned with a reduced force. Ž<P>SOLUTION: In the 6-wheeled chair, the front wheels and the rear wheels (auxiliary wheels) of which are each provided with a caster, the rear wheels (the auxiliary wheels) are connected to the rear part of the leg body through a link mechanism 10 and a spring 10-3 so that even if the leg bodies are inclined by lifting the front wheels, the rear wheels (the auxiliary wheels) 9 are always retained in the vertical state. The link mechanism includes two sets of links provided between the auxiliary wheel support member and the rear end part of the leg body and between the auxiliary wheel support member and a main wheel support member. The spring is stretched between the auxiliary wheel support member and the wheel support member of the leg body rear end part, and the leg body is inclined against the spring by the link mechanism so that the front wheel side is floated from the ground surface, and the casters of the auxiliary wheels fitted to the auxiliary wheel support member are always retained in the vertical state by the action of the link mechanism and the spring. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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