A bicycle shift device (10) includes: a first body associated with a bicycle frame; a second body (36) connected to and movable relative to the first body; a rocker arm (20) rotatably connected to the second body at a rotation axis (X); a shaft (23) extending coaxially with the axis of rotation (X) and fixedly associated with the rocker arm. A unidirectional rotation device (80) is arranged between the shaft and the second body to allow the shaft to rotate about the axis of rotation (X) only in a first rotational direction relative to the second body. A first resilient element (40) is associated with both the second body and the rocker arm to urge rotation of the rocker arm about the axis of rotation (X) in a first rotational direction. Damping means (50) are arranged between the shaft and the unidirectional rotation means so as to generate frictional force when the rocker arm moves about the rotation axis (X) in a second rotational direction opposite the first rotational direction. The damping device comprises a friction surface (52) which extends axially in a direction parallel to the rotation axis (X) and is in contact with the unidirectional rotation device.
一种自行车换挡装置(10),包括:第一本体,其与自行车车架相关联;第二本体(36),其连接到第一本体且能够相对于第一本体移动;摇臂(20),其能够在旋转轴线(X)处旋转地连接到第二本体;轴(23),其与旋转轴线(X)同轴延伸且与摇臂固定地相关联。单向旋转装置(80)布置在轴和第二本体之间以允许轴绕旋转轴线(X)仅在第一旋转方向上相对于第二本体旋转。第一弹性元件(40)与第二本体和摇臂两者相关联以推动摇臂绕旋转轴线(X)在第一旋转方向上旋转。阻尼装置(50)布置在轴和单向旋转装置之间从而当摇臂绕旋转轴线(X)在与第一旋转方向相反的第二旋转方向上移动时产生摩擦力。阻尼装置包括摩擦表面(52),该摩擦表面沿着平行于旋转轴线(X)的方向轴向延伸且与单向旋转装置接触。
Bicycle gear shifting device
自行车换挡装置
2022-06-07
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |