The invention discloses a locking structure of a bicycle crank, which is used for locking the crank on a crank middle shaft of a bicycle, and is characterized in that the locking structure comprises a connecting sleeve which is matched with the crank middle shaft in a sleeving manner and is used for pre-positioning the crank on the crank middle shaft; the inner peripheral wall part of the connecting sleeve obliquely extends in the axial direction to form a section of inclined wall, the inclined wall extends to the opening of the connecting sleeve, and a locking space is formed in the inner peripheral wall relative to the locking head of the crank middle shaft; according to the technical scheme, the locking sleeve, the connecting sleeve and the crank form a whole, external acting force is resisted through the whole, the capacity of resisting the external force is higher, the structure is firmer, the locking effect of the crank is more stable, larger external impact force can be borne, the crank is prevented from falling off or shaking, worries are avoided during daily riding, and the service life of the bicycle is prolonged. The later maintenance cost is reduced, and the experience feeling is higher.

    本发明公开了一种自行车曲柄的锁紧结构,其用于将曲柄锁固于自行车的曲柄中轴上,其特征在于,该所述的锁紧结构包括:连接套,其与所述的曲柄中轴套设配合,将曲柄预定位在曲柄中轴上;所述的连接套的内周壁部分沿轴向倾斜延伸形成一段倾斜壁,该倾斜壁延伸至连接套的敞口处,所述的内周壁相对曲柄中轴的锁止头形成有一个锁止空间;本发明的技术方案,让锁紧套、连接套和曲柄形成一个整体,通过整体来抵抗外部作用力,抵抗外力的能力更强,结构更加牢固性,曲柄的锁固效果也更加稳定,还可承受更大外部冲击力,避免曲柄出现脱落或晃动,日常骑行时也不会有后顾之忧,减少后期维护成本,体验感更强。


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    Title :

    Locking structure of bicycle crank


    Additional title:

    一种自行车曲柄的锁紧结构


    Contributors:
    LI SHU (author)

    Publication date :

    2024-05-10


    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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