ROTARY ELECTRIC MACHINE HAVING COAXIAL OUTPUT HOLLOW SHAFT SPEED REDUCER WITH SLIP RING

摘要

PROBLEM TO BE SOLVED: To provide an actuator best and practical for a three-dimensional positioning device for a monitoring camera, disco lighting, an antenna, etc. SOLUTION: The actuator comprises an internally revolving electric machine 15 with a hollow revolving shaft 7, a speed reducer 16 for reducing the output of the revolving electric machine 15 and taking the output out of a hollow shaft coaxially with the revolving shaft 7 by using with and a slip ring 14 provided in a hollow portion or an output portion of the speed reducer 16, or comprises an externally revolving electric machine with a hollow revolving shaft, a speed reducer for reducing the output and taking the output out of the hollow shaft coaxially with the revolving electric machine shaft and a slip ring provided in the hollow portion or the output portion of the speed reducer.