| 摘要 |
A bicycle rear derailleur (12) includes a base member (20), a movable member (22) and a linkage assembly (24). The base member is configured to be attached to a bicycle frame (10). The movable member has a chain guide portion (26). The linkage assembly is coupled between the base member and the movable member to move the chain guide portion between a retracted position and an extended position. Preferably, at least one of the base member and the movable member are pivotal relative to an axle that includes a tubular sleeve member having a grease receiving opening that extends between an exterior surface and an interior surface. Also, preferably, the linkage assembly includes at least one pivot pin interconnecting a link to one of the base member and the movable member with the pivot pin having a grease fillable recess formed therein that extends in a circumferential direction. |
