The Innovative Design of Wheelchair with Lifting and Standing Functions
Traditionally, the mechanism of wheelchair with lifting and standing functions has 2 degrees of freedom, and used 2 power sources to perform these 2 motion function. The mechanism proposed for wheelchair with lifting and standing functions in this paper has 1 degree of freedom. Hence, we can use only 1 power source to drive the mechanism to achieve lifting and standing functions. For traditional standing wheelchair, its’ center of gravity moves forward when standing up and it needs 2 auxiliary wheels to prevent dumping. In this paper, by using the checklist method of Osborn, the wheelchair with 1 DOF is invented to perform lifting and standing functions. The center of gravity of this new wheelchair after standing up still located between the front and rear wheels, no auxiliary wheels needed. The new design has the advantages of simple operation, more stability, and more safety.
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