The invention discloses a bicycle crank variable speed gear device, which accelerates the gear ratio to 1.6 times speed to 1.8 times speed through the gear assembly and the lock pin assembly, and canchange the gear ratio to 1 times speed as needed and the transmission efficiency is excellent and operation is easy, it can achieve the miniaturization and weight reduction of bicycles. A gear assembly is provided inside the casing and one side of the crank variable speed gear device, and a lock pin assembly is provided inside the casing and the other side thereof. The gear assembly includes a sungear with a first locking pin engaging portion on the radial outer surface of one side, a plurality of planet gears and a ring gear. The lock pin assembly includes: a lock pin body, a plurality of first lock pins, a lock pin ring, a second lock pin, a lock pin guide block, a lock ring, and an annular link bracket fixedly mounted on one side surface of the lock pin body.

    本发明公开一种自行车用曲柄变速齿轮装置,其通过齿轮组件和锁销组件将齿轮比加速至1.6倍速至1.8倍速的同时,可以按需将齿轮比变速成1倍速而变速效率优良,操作便利,可以实现自行车的小型化和轻量化。曲柄变速齿轮装置的壳体内部和其一侧设有齿轮组件,壳体内部和其另一侧设有锁销组件。所述齿轮组件包括一侧径向外面上设有第一锁销卡合部的太阳齿轮、多个行星齿轮和齿圈。所述锁销组件包括:锁销主体、多个第一锁销、锁销环、第二锁销、锁销导块、锁环以及固定装配在所述锁销主体一侧面上的环状连结托架。


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    Titel :

    Bicycle crank variable speed gear device


    Weitere Titelangaben:

    自行车用曲柄变速齿轮装置


    Beteiligte:
    SEO DAL-WON (Autor:in)

    Erscheinungsdatum :

    2020-06-02


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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