A stepless speed change mechanism of the bicycle stepless speed change device comprises a front driving belt pulley assembly, a rear driving belt pulley assembly and a driven belt pulley assembly, the driving belt pulley assembly comprises a left driving belt pulley and a right driving belt pulley which are installed on a driving gear shaft, and the driven belt pulley assembly comprises a left driven belt pulley and a right driven belt pulley which are installed on a driven shaft. Synchronous transmission belts matched with the V-shaped grooves in section shape are arranged in front and rear V-shaped grooves formed between the left and right driving belt wheels and between the left and right driven belt wheels; the left driven belt pulley and the right driven belt pulley oppositely clamp the synchronous transmission belt under the action of the return spring, and the synchronous transmission belt in a non-riding state is arranged between the left driving belt pulley and the right driving belt pulley and is meshed with the driving gear shaft; each driving belt wheel comprises a hub slidably installed on the inner side and a wheel disc fixedly installed on the outer side, rollers are arranged in the bottoms of radial roller ways evenly distributed between the hub and the wheel disc in the circumferential direction, and the left-right distance between the radial roller ways is gradually decreased from the bottom to the top.

    本发明公开了一种自行车无极变速装置,其无极变速机构包括前、后的主动皮带轮组件和从动皮带轮组件,主动皮带轮组件包括安装于主动齿轮轴上的左、右主动皮带轮,从动皮带轮组件包括安装于从动轴上的左、右从动皮带轮,左、右主动皮带轮和左、右从动皮带轮之间形成的前、后“V”形槽中设置有断面形状匹配“V”形槽的同步传动带;左、右从动皮带轮在回位弹簧作用下相向夹紧同步传动带,非骑行状态下的同步传动带置于左、右主动皮带轮之间并与主动齿轮轴啮合;各主动皮带轮包括内侧滑动安装的轮毂和外侧固定安装的轮盘,轮毂与轮盘之间圆周均布的径向辊道的底部内设置有辊子,各径向辊道的左、右间距由底部向顶部逐渐变小。


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    Title :

    Stepless speed change device of bicycle


    Additional title:

    自行车无极变速装置


    Contributors:

    Publication date :

    2024-07-16


    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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