Abstract
Transfer from wheelchair to bed is difficult for wheelchair users without assistance. Because they must lift their body up and move from wheelchair to bed by themselves. Some lifts or assist systems called transfer aids are developed to help transfer, nevertheless they need assistance. Lifts need large space to use and it is hard to carry. To attach the transfer aids, wheelchair need to be modified. The aim of our study is to develop a transfer aids by self-help model that wheelchair users can use easily. This transfer aids can attach to wheelchair without improvement. And it can be carried easily so wheelchair users can use it everywhere. We developed the spread mechanism that user feel trouble-free to spread the transfer aid. Only by the simple motion of the lever, wheelchair users can spreads the transfer aid.
