Electrically operated actuator for bicycle component, comprises electric motor, in-line epicyclic reduction gear, circular potentiometer type angular position indicator and threaded output shaft

摘要

The actuator has an electric motor (2) with output shaft (3) connected to an epicyclic reduction gear which has a planetary pinion (8), satellite (16) and driven wheel (14). The driven shaft (11) is supported on bearings (18,21) and includes a circular potentiometer (25) which is used to indicate the shaft position. A bicycle component is actuated by the driven shaft by means of an endless screw (12,13) Independent claims are made for a bicycle gear change which uses the actuator