| 摘要 |
PROBLEM TO BE SOLVED: To provide a high precision reduction gear having a large speed reduction ratio by a small number of components.SOLUTION: A reduction gear according to the present invention comprises an input part 11, a first gear 41, a second gear 31, an eccentric rotation component 21, a joint 51, and an output part 61. By rotating the input part 11, a meshing part of the first gear 41 and the second gear 31 is moved along an inner periphery of the first gear 41. The joint 51 passes through an intersection of an input shaft 10 and a center shaft 30 of the second gear 31, and has a degree of freedom for two shafts vertical to the input shaft 10 and orthogonal to each other. The output part 61 rotates around the input shaft 10 as a center shaft, and outputs only rotation movement around the input shaft 10 as a center shaft transmitted from the joint 51. |
