Abstract
In this research, the influence of the human body on the level difference at the time of wheelchair is investigated. This dynamic influence is caused by a road situation, friction of a cushion, and clothes. It aims at obtaining the result for improving the sheet of a wheelchair. The dropping experiment was conducted. A human body is put on a wheelchair and it passes the level difference of 20mm. Then, the acceleration of each part grade of a human body, a 3-dimensional position, and a shock value are measured. As a result of the dropping experiment, impact value by the front tires correlates closelv with weight of subject and passing velocity. At last by regression analysis, the prospect formula of impact value was obtained.
