Design and Analysis of an Automatic Adjustable wheelchair footrest

• Main Authors: Guo-Gui Chen, 陳國桂
• Other Authors: Jenq-Huey Shyu
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/g5d5uf

碩士 === 國立臺北科技大學 === 機電整合研究所 === 96 === This research deals with the design of the mechanisms of a wheelchair footrest. According to the related references of this research, most of wheelchair footrest only have a fixed pivot when users want to stretch their legs, the axles of the knees and footrest are not in the different positions, and when footrest and ground are parallel, footrest didnt stretch, and the legs will get a bearing to make the knees a little bend and it will make the users feel uncomfortable and didnt accord with ergonomics. The design of the wheelchair footrest is four-bar linkage which has one degree of freedom mechanism. The mechanism is used motion generator for three-positon motion synthesis. The moves process of the footrest which make the user obtain comfortable extending and carry. In addition, by using the Solid Works 2007 SP0.0 to build up the 3D model and simulate the movements, and implement COSMOSWorks Designer to analyze stress, strain and displacement, so as to confirm the strength of the wheelchair footrest structure. So the automatic adjustable wheelchair footrest by the one degree of freedom, and its lightweight and easy to use. Its the ideal auxiliary apparatus of wheelchair, and suitable for geriatric or defective.