| 摘要 |
PROBLEM TO BE SOLVED: To provide an eccentric oscillation type gear device that can be made lightweight.SOLUTION: An eccentric oscillation type gear device X1 comprises: an outer cylinder 2 including a plurality of pin grooves 21a formed in an inner peripheral surface; and a plurality of internal tooth pins 3 arranged in the pin grooves 21a and with which an oscillation gear 5 engages. The length of the pin grooves 21a in the longitudinal direction of the internal tooth pins 3 is shorter than the length of the internal tooth pins 3.SELECTED DRAWING: Figure 3 |
