Rotation driving device

摘要

A rotation driving device includes a motor provided in a housing, a planetary gear reducer connected to the motor coaxially with the motor, an output shaft connected to an end reduction member of the planetary gear reducer coaxially with the end reduction member, and a rotation detector located at the same position as the end reduction member in an axial direction of the planetary gear reducer and located at a different position from a center axis of the end reduction member in a radial direction of the planetary gear reducer, the rotation detector being capable of detecting a degree of rotation of the end reduction member. Accordingly, the rotation driving device can be made to be smaller and compact in the axial direction.

主权项

1. A rotation driving device comprising:
a housing; a motor provided in the housing; a planetary gear reducer connected to the motor, the planetary gear reducer being coaxial with the motor; an output shaft directly connected to an end reduction member of the planetary gear reducer, the output shaft being coaxial with the end reduction member; and a rotation detector located at the same position as the end reduction member in an axial direction of the planetary gear reducer, the rotation detector overlapping the end reduction member in a circumferential direction of the planetary gear reducer, the rotation detector being located at a different position than a center axis of the end reduction member in a radial direction of the planetary gear reducer, the rotation detector being capable of detecting a rotation angle of the end reduction member, wherein the motor generates a torque that is transmitted from the motor to the output shaft through the planetary gear reducer and the end reduction member in this order.