A bicycle rear wheel gear device capable of rotating around a gear rotation axis includes a plurality of gears having different numbers of teeth coaxial with respect to the gear rotation axis, the plurality of gears are arranged with an axial interval between each other to lock with the shape of the bicycle chain, the bicycle rear wheel gear device has a gear level quotient formed by dividing thenumber of teeth of the gear with the largest diameter by the number of teeth of the gear with the smallest diameter, and a stacking density quotient formed by dividing the number of the gear in the bicycle rear wheel gear device by the axial interval between the axially outermost gears measured in millimeters. The bicycle rear wheel gear device has a gear level stacking coefficient formed by the product of the gear level quotient and the stacking density quotient. The gear level stacking coefficient is greater than 1.25, preferably greater than 1.3, and particularly preferably greater than 1.35, and extremely preferably greater than 1.4.

    一种能够围绕齿轮旋转轴线旋转的自行车后轮齿轮装置,其包括关于齿轮旋转轴线同轴的具有不同齿数的多个齿轮,所述多个齿轮被布置成彼此之间具有轴向间隔,并且用于与自行车链条形状锁合,其中自行车后轮齿轮装置具有通过具有最大直径的齿轮的齿数除以具有最小直径的齿轮的齿数而形成的档位级别商数以及通过自行车后轮齿轮装置中的齿轮的数量除以轴向最外齿轮彼此之间以毫米为单位测量的轴向间隔而形成的堆积密度商数。自行车后轮齿轮装置具有由档位级别商数和堆积密度商数的乘积而形成的档位级别堆积系数,档位级别堆积系数大于1.25,优选地大于1.3,特别优选地大于1.35,极端优选地大于1.4。


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    Title :

    Bicycle rear wheel gear device


    Additional title:

    自行车后轮齿轮装置


    Contributors:

    Publication date :

    2020-04-14


    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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