The invention discloses a front derailleur which comprises a motor unit, a linkage assembly and a front derailleur guide plate. An outer connecting rod is arranged in the linkage assembly, the motor unit comprises a motor, a motor gear, a speed reduction gear, an output gear and an output swing arm, the output end of the motor is fixedly connected with the motor gear, the motor gear is in driving connection with one end of the speed reduction gear, the other end of the speed reduction gear is in driving connection with one end of the output gear, and the output swing arm is connected with the output gear. The other end of the output gear, one end of the output swing arm and one end of the outer connecting rod are rotationally connected around a connecting shaft, the other end of the output swing arm is in driving connection with the outer connecting rod, and the other end of the outer connecting rod is in driving connection with the front end of the front shifting guide plate. The output swing arm is in driving connection with the outer connecting rod, so that the forward gear and the reverse gear of the bicycle are both driven by the motor, and the motor does not need to overcome huge spring force to do work, so that energy loss is avoided.

    本发明公开了一种前拨链器,包括:电机单元、联动组件、前拨导板;所述联动组件中设有外连接杆,所述电机单元包括:电机、电机齿轮、减速齿、输出齿轮以及输出摆臂,所述电机输出端与所述电机齿轮固连,所述电机齿轮与所述减速齿的一端驱动连接,所述减速齿的另一端与所述输出齿轮的一端驱动连接,所述输出齿轮的另一端、所述输出摆臂的一端以及所述外连接杆的一端围绕连接轴转动连接,所述输出摆臂的另一端与所述外连接杆驱动连接,所述外连接杆的另一端与所述前拨导板的前端驱动连接。本发明通过将输出摆臂与外连接杆驱动连接,使得自行车的进档和回档皆由电机带动完成,电机不需要克服巨大的弹簧力做功而损失能量。


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    Title :

    Front derailleur


    Additional title:

    一种前拨链器


    Contributors:

    Publication date :

    2023-04-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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