The invention discloses a clutch type expansion brake for a bicycle. The clutch type expansion brake comprises a shell, a push rod, a clutch driving device, a support body, a sliding block and a tightening ring. The support body is provided with an annular base, positioning protruding blocks are arranged on one side of the annular base, the sliding blocks are arranged in installation parts between every two adjacent positioning protruding blocks in a matched mode, annular grooves for installing the tightening rings are formed in the outer side faces of the positioning protruding blocks and the outer side faces of the sliding blocks, and the clutch driving device is embedded in an inner cavity formed by the positioning protruding blocks and the sliding blocks. The push rod drives the clutch driving device to rotate in the inner cavity of the support body, the rolling column rolls along the wedge-shaped slope surface structure on the inner side face of the sliding block and ejects the sliding block out, the rolling column is recycled under the action of the tightening ring, and clutch braking with a hub is completed. The problem that the braking effect and the braking stability of an existing brake cannot be balanced and unified due to the size of a gap of a roller in a support installation groove is solved.
本发明公开了一种自行车用离合式涨闸,包括外壳、推杆、离合驱动装置、支架主体、滑块和收紧圈;支架主体设有环形底座,环形底座一侧设有定位凸块,滑块适配安置在相邻两个定位凸块之间的安装部内,定位凸块和滑块外侧面上设有收紧圈安装的环形凹槽,离合驱动装置嵌装在定位凸块和滑块形成的内腔中;推杆带动离合驱动装置在支架主体内腔中转动,滚圆柱子沿滑块内侧面斜楔形坡面结构滚动并将滑块顶出、在收紧圈作用下回收,完成与轮毂离、合制动。解决了现有制动器因滚子在支架安装槽内的间隙大小,致使制动效果与制动平稳不能平衡统一问题。
Clutch type expansion brake for bicycle
一种自行车用离合式涨闸
2022-05-24
Patent
Elektronische Ressource
Chinesisch
IPC: | B62L BRAKES SPECIALLY ADAPTED FOR CYCLES , Bremsen, besonders für Fahrräder oder Motorräder ausgebildet |
ONE-WAY CLUTCH FOR ELECTRICALLY POWERED BICYCLE WITH COASTER BRAKE
Europäisches Patentamt | 2017
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