The invention provides a rear sprocket for a human-powered vehicle, which can prevent dirt such as mud from adhering to an area for promoting speed change. A rear sprocket for a human-powered vehicle is provided with: a sprocket body; and a plurality of sprocket teeth extending radially outward from an outer circumference of the sprocket body in a radial direction, the plurality of sprocket teeth including a plurality of up-shift promoting teeth including an up-shift starting tooth having a first up-shift recess and an up-shift recess tooth having a second up-shift recess, the up-shift promoting teeth including a first up-shift recess and a second up-shift recess. A first up-shift tooth bottom is defined between the circumferential up-shift start tooth and the up-shift recess tooth, and a first up-shift chamfered portion is provided at least at the first up-shift tooth bottom.
本发明提供一种能够抑制泥等污垢附着于用于促进变速的区域的人力驱动车用的后链轮。人力驱动车用的后链轮具备:链轮主体;和多个链轮齿,其在径向上从链轮主体的外周向径向外侧延伸,多个链轮齿包括多个升挡促进齿,多个升挡促进齿包括升挡开始齿和升挡凹部齿,升挡开始齿具有第一升挡凹部,升挡凹部齿具有第二升挡凹部,第一升挡齿底定义为在周向上升挡开始齿与升挡凹部齿之间,第一升挡倒角部至少设于第一升挡齿底。
Rear chain wheel for human-powered vehicle
人力驱动车用的后链轮
2024-07-30
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
Rear chain wheel for human-powered vehicle and rear chain wheel assembly for human-powered vehicle
European Patent Office | 2023
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