The present invention discloses a three-speed bicycle transmission structure and the transmission method thereof, aiming at overcoming the drawbacks that the overall structure of the prior art cannot support three-speed transmission in a small space and requires high manufacturing costs. The present invention comprises a central shaft, a three-speed transmission structure and a gearbox housing; wherein, the three-speed transmission structure comprises a centrifugal clutch shifting mechanism, a composite planetary gear ring and a first-level transmission mechanism, a second-level transmission mechanism and a third-level transmission mechanism. The centrifugal clutch shifting mechanism is used for shifting among the above three levels of transmission mechanisms to carry out three-speed transmission, and the composite planetary gear ring is used for cooperating with the centrifugal clutch shifting mechanism to realize partial gear shifting. The present invention realizes simplified structure, compressed structure space, improved transmission efficiency and cost saving.


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    Title :

    Three-speed bicycle transmission structure and transmission method thereof


    Contributors:
    XU SHUHU (author) / YAN XIANGYU (author) / ZHAO JUNJIAN (author)

    Publication date :

    2025-07-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16H Getriebe , GEARING / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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