The invention discloses a hydraulic damper and a rear derailleur with the hydraulic damper, and the hydraulic damper comprises a shell with a closed inner cavity inside; one end of the main shaft extends into the closed inner cavity and is provided with a damping partition plate capable of dividing the closed inner cavity into a pressure bearing chamber and a pressure relief chamber, and a flowing gap allowing fluid to circulate is formed between the damping partition plate and the shell; the head end and the tail end of the fluid channel communicate with the pressure relief chamber and the pressure bearing chamber correspondingly, a one-way valve is arranged in the fluid channel and comprises a valve element and a spring, and the spring extends in the horizontal direction and is arranged between the valve element and the shell; when the main shaft is actuated in the first rotation direction, fluid in the pressure bearing chamber flows to the pressure relief chamber through the flowing gap, and the damping partition plate bears rotation resistance applied by the fluid in the second rotation direction. The hydraulic damper is very obvious in damping effect, the situation of chain falling is effectively reduced, the requirement for machining and assembling precision of the damping partition plate and the shell is low, and the situation of chain falling caused by reverse opening of the one-way valve is prevented.
本发明公开了一种液压阻尼器及具有其的后拨链器,包括:壳体,内部具有密闭内腔;主轴,一端延伸至密闭内腔中且安装有能够将密闭内腔分隔为承压室和泄压室的阻尼隔板,阻尼隔板与壳体之间形成供流体流通的流动间隙;流体通道,首尾两端分别连通泄压室和承压室,流体通道内设置有单向阀,单向阀包括阀芯和弹簧,弹簧沿水平方向延伸并设置于阀芯和壳体之间;当主轴沿第一旋转方向被致动时,承压室的流体经过流动间隙流向泄压室,阻尼隔板承受流体施加的沿第二旋转方向的旋转阻力。本液压阻尼器阻尼效果非常明显,有效减少出现掉链的情况,对阻尼隔板和壳体的加工、装配精度要求低,防止出现单向阀反向打开而造成的掉链情况。
Hydraulic damper and rear derailleur
液压阻尼器及后拨链器
2025-03-07
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |