Abstract
A prototype of stair-climbing powered wheelchair is presented in this paper. During the past few years, 2 prototypes have been developed for handicapped or elderly to move up and down along the stairs by customizing a commercially available powered wheelchair. After making reviews on these prototypes, new prototype 3rd has been planned with a particular emphasis on torque transmission mechanism from powered wheelchair to reduction gear and an automatic docking mechanism of wheelchair and hoist carrier plate.
