The crank assembly includes a crank arm, a front sprocket unit, and at least one chain fall-off control projection. The at least one chain fall-off control projection is configured to prevent entry of the drive chain into a space disposed radially inward from the at least one control projection and axially between the crank arm and the front sprocket unit. The at least one chain fall-off control projection is 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. And at least one chain falling control bulge is provided with a through hole.
曲柄组件包括曲柄臂、前链轮单元和至少一个链条脱落控制凸起。至少一个链条脱落控制凸起构造为阻止传动链条进入从至少一个控制凸起径向向内且在轴线方向设置在曲柄臂和前链轮单元之间的空间中。至少一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。至少一个链条脱落控制凸起具有通孔。
Crank assembly for human-powered vehicle
用于人力驱动车辆的曲柄组件
2023-10-20
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |