The Innovative Design and Prototype Verification of Wheelchair with One Degree of Freedom to Perform Lifting and Standing Functions

3rd International Conference on Mechanical Engineering and Automation Science

机械制造;无线电电子学

Hsieh, Long-Chang^1 ; Chen, Tzu-Hsia^2

Department of Power Mechanical Engineering, National Formosa University, Huwei, Yunlin, Taiwan^1

Department of Mechanical Engineering, Minghsin University of Science and Technology, Taiwan^2

关键词: 1 Degree of freedom;    Auxiliary wheel;    Centre of gravity;    Degree of freedom;    Innovative design;    Motion function;    Prototype verification;    Simple operation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/280/1/012027/pdf
DOI  :  10.1088/1757-899X/280/1/012027

来源: IOP

【 摘 要 】

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 purpose of this paper is to invent new wheelchair with 1 degree of freedom to perform these 2 motion functions. Hence, we can use only 1 power source to drive the mechanism to achieve lifting and standing motion functions. The new design has the advantages of simple operation, more stability, and more safety. For traditional standing wheelchair, its' centre 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 centre of gravity of this new wheelchair after standing up still located between the front and rear wheels, no auxiliary wheels needed. Finally, the prototype is manufactured to verify the theoretical results.