Rotary actuator used in e.g. parking switching apparatus of motor vehicle, has retarder whose input shaft is interlocked with rotor shaft of synchronous motor, to constitute common shaft inside main housing

摘要

A main housing has a retarder (6) whose input shaft is interlocked with a rotor shaft of a synchronous motor (3), to constitute a common shaft (13). The retarder has a shaft (17) that transmits eccentric auto-rotation component of an external-tooth gearwheel (26), with respect to the common shaft through a transmission (28).