Design of a One-side Driven Wheelchair with Transmission Hub

• Main Authors: Sean, 李晉維
• Other Authors: 林聰益
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/88670170300232623768

碩士 === 南台科技大學 === 機械工程系 === 95 === At present, it is difficult for one-sided disable patients who suffered an accident or hemiplegia to find a suitable mobile instrument. The design purpose of this one-sided driven wheelchair with a transmission hub is an effort-saving and easily driven wheelchair. It can not only meet the needs of such patients but also enable them to have a comfortable and independent life. The modulized design in this study is based on the procedures of product development and engineering design. First, the design requirements were set according to literature and market analyses on wheelchairs with one-side drive. Then, the design was processed in two parts, the driving system and the steering system. Among these, the design of the transmission hub is the most important part. A transmission hub with 5-link planetary gear was chosen for this design. Based on the design requirements of a four shift-levels (i.e direct, low-speed, neutral and reverse gear shifts), structural synthesis, shift-level synthesis, kinematics synthesis were developed according to the design method of transmission hubs for wheelchair. Besides, performance tests were also conducted. Finally, the most practicable design was chosen to develop a shift-level control governor so that the wheelchair can freely move forward, backward and change its directions. In this study, we have successfully designed a one-side driven wheelchair which can meet the specific needs of one-side disable patients. The steering of the wheelchair is operated by one hand and the driving treadle is propelled by one leg. The operation is direct; the movement is clear; the steering angle is large; and the driving is effort-saving. Even long time driving won’t cause secondary injuries. Moreover, the utility of a transmission hub has largely enhanced the mechanical efficiency of this wheelchair. The results of study can serve as basis for production so that one-side disable patients can be greatly benefited