Design of Three - speed Automatic Speed Changer
نویسندگان
چکیده
The bicycle is constantly being updated in order to meet market needs, the developing trend of bicycle shifting gear has changed from manual shifting fashion into automatic shift fashion. In this paper, a systematic approach is proposed to synthesize the design concept of the three-speed automatic speed changer. In this paper, we accord to the design concepts of planetary gear trains with two degrees of freedom, which are proposed by Hong-Sen Yan and Long-Chang Hsieh. By applying the TRIZ creative design method to centrifugal clutch, one-way clutch, and brake, 10 kinds of creative design concepts of three-speed automatic speed changer was created. The results not only can serve as a teaching tool for creative design courses, but also can provide as a reference to industrial circles for development of the three-speed automatic speed changer of bicycle, electric motorcycle, and electric scooter.
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