The invention provides a bicycle center shaft which comprises a shell, a center shaft rod arranged in the shell in a penetrating mode, an elastic ring and a bearing seat which are arranged on the center shaft rod in a sleeved mode, and a bearing and an adjusting piece which are arranged on the bearing seat in a sleeved mode. The bearing seat comprises a pushing part protruding from the outer surface, the outer surface is provided with a threaded part and a bearing installation part which are located on the two sides of the pushing part, the elastic ring is arranged between the center shaft rod and the inner surface of the bearing seat, an inner ring of the bearing abuts against the pushing part of the bearing seat and the bearing installation part, and an outer ring of the bearing abuts against the shell. The bearing seat, the elastic ring and the central shaft rod can rotate together relative to the shell, the adjusting piece is in threaded connection with the threaded part of the bearing seat, so that a user rotates the adjusting piece to enable the adjusting piece and the bearing seat to move relatively, a gap between the crank and the bearing can be eliminated, and the bearing is prevented from being subjected to overlarge pre-pressure.

    本发明提供了一种自行车中轴,包含有一外壳、一穿设于外壳内的中心轴杆、套设于中心轴杆的一弹性环及一轴承座,以及套设于轴承座的一轴承及一调整件,轴承座包含有一自外表面凸出的推抵部且外表面设有位于推抵部二侧的一螺纹部及一轴承安装部,弹性环设于中心轴杆与轴承座的内表面之间,轴承的内圈抵接于轴承座的推抵部及轴承安装部,外圈抵接于外壳,使得轴承座、弹性环及中心轴杆能一起相对于外壳转动,调整件与轴承座的螺纹部螺接,以供使用者转动调整件而使调整件与轴承座相对移动,如此可消除曲柄与轴承之间的空隙并避免轴承受到过大的预压力。


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    Titel :

    Bicycle middle axle


    Weitere Titelangaben:

    自行车中轴


    Beteiligte:
    FENG BINJIE (Autor:in) / XU JIAHONG (Autor:in) / NIAN SHIWEI (Autor:in)

    Erscheinungsdatum :

    2023-07-25


    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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