| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear device which can reduce abnormal noise caused from a housing. ! SOLUTION: A reduction gear 4 comprises: a cam shaft 41 which rotates integrally with a motor shaft; an inner gear 42 which is arranged coaxially with the motor shaft: two outer gears 43 which are arranged at an internal periphery of the inner gear 42 so as to be eccentric to the inner gear 42 by being relatively rotatably supported by a cam part 52 of the cam shaft 41; and a carrier 44 which outputs rotation input to the cam shaft 41. The inner gear 42 is arranged in a housing 5 as a fixed element by being fastened to the housing 5 with a plurality of fastening bolts 45. Then, the inner gear 42, the fastening bolts 45 and outer rings 91b, 93b of rolling bearings 91, 93 which are fixed to an internal periphery of the inner gear 42 are elastically supported by first and second elastic support members 46, 47 so as to be brought into non-contact with the housing 5 and ring screws 115 which are fixed to an |
