| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of prolonging the lifetime of a flexible meshing type gear device.SOLUTION: A flexible meshing gear device comprises an exciter 20, an exciter bearing fitted externally to the exciter 20, and a flexible external tool gear 12 fitted externally to the exciter bearing. An outer ring member 34a of the exciter bearing includes a cylinder part 36a having a substantially cylindrical outer peripheral surface before fitted externally to the exciter, and a first projection 38a and a second projection 40a projecting outward from the cylinder part 36a. At an inner periphery of the external tooth gear 12, a first recess 42 and a second recess 44 are provided which correspond to the first projection 38a and second projection 40a. Tops P of the first projection 38a and second projection 40a are not present on a straight line L1 connecting the center C of the exciter 20 and a tooth bottom of the external tooth gear 12.SELECTED DRAWING: Figure 2 |
