A crank assembly includes a crank arm, a front sprocket unit, and a plurality of chain fall-off control protrusions. The plurality of chain fall-off control protrusions are configured to prevent the transmission chain from entering a space radially inward from the plurality of chain fall-off control protrusions and disposed between the crank arm and the front sprocket unit in an axial direction. The plurality of chain fall-off control protrusions are configured to be disposed on at least one of an axially inward crank surface of the crank arm and an axially outward sprocket surface of the front sprocket unit. The plurality of chain fall-off control protrusions are spaced apart from each other in a circumferential direction with respect to the rotational center axis.
一种曲柄组件,包括曲柄臂、前链轮单元和多个链条脱落控制凸起。多个链条脱落控制凸起构造为阻止传动链条进入从多个链条脱落控制凸起径向向内且在轴向方向设置在曲柄臂和前链轮单元之间的空间中。多个链条脱落控制凸起构造为设置在曲柄臂的轴向朝内的曲柄表面和前链轮单元的轴向朝外的链轮表面中的至少一个。多个链条脱落控制凸起在相对于旋转中心轴线的圆周方向上彼此间隔开。
Crank assembly for human-powered vehicle
用于人力驱动车辆的曲柄组件
2023-10-20
Patent
Elektronische Ressource
Chinesisch
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
Crank arm for crank assembly of human powered vehicle
Europäisches Patentamt | 2022
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