| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor with a reduction gear operating by hypocycloidal reduction system, in which generation of sound and vibration is reduced during operation.SOLUTION: A reduction gear 20 includes an internal gear 21 secured to a housing 3, a rod-like input shaft 28 rotated by the rotary input from an electric motor 10, two external gears (22, 24), linkage members (23, 25), and an output member 26 linked, respectively, to the external gears (22, 24) by means of the linkage members (23, 25). Eccentric shafts (28c, 28d) are formed on the input shaft 28 at positions eccentric to the shaft center CL on the sides opposite from each other, and the two external gears (22, 24) are attached rotatably to the eccentric shafts (28c, 28d), respectively, via bearings (B4, B5). The output member 26 is rotated by the rotary output decelerated by oscillating rotational motion of the external gears (22, 24). |
