Bicycle derailleur motor unit assembly

摘要

A bicycle front derailleur motor unit assembly (12) is provided that includes a motorized front derailleur mounting member (32) and a motor unit (34). The front derailleur mounting member is configured to be mounted to a bicycle frame (14). The front derailleur mounting member includes a front derailleur mounting portion (62) configured to be coupled to a linkage of a front derailleur (42) and a motor unit mounting portion (64). The motor unit includes a motor unit housing (70) configured to be removably coupled to the motor unit mounting portion and an output shaft (80) configured to rotate about a rotation axis relative to the motor unit housing in first and second opposite rotational directions. The motor unit mounting portion and the motor unit housing include first and second fastener-less mating structures configured to resist rotational movement of the motor unit housing relative to the front derailleur mounting member due to a torque produced by the output shaft.