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IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society
Th is paper proposes the wheelchair caster unit which assists manual wheelchair users in a step climb ing. Th is caster unit has 2 functions. First one is the assistive plate which en larges radius of a front wheel equivalently in the limited space between main frame and foot rest. When the caster meets the step, the assistive plates are rotated as same manner as a general big wheel. Thus, the user driving force is reduced compared with conventional small caster wheel. Second one is the lockdoi:10.1109/iecon.2011.6119632 fatcat:tyljwde5lja53oov47f3tmie2a