| 摘要 |
PROBLEM TO BE SOLVED: To enable a one-way clutch to operate stably by regulating axial movement of an inner ring of an angular bearing in a crank-type power transmission unit.SOLUTION: When a one-way clutch 21 engages, a radius of an oscillation link 22 is enlarged, and a radius of an outer ring 35 of an angular bearing 34 integrally-formed with the oscillation link 22 is thereby enlarged, causing disappearance of a preload. As a result, there is the possibility that an axial position of an inner ring 36 is changed to make an axial position of a roller 25 unstable and positions of the roller 25 and an engaging spring 24 are displaced to make operation of the one-way clutch 21 unstable. However, both axial ends of a spring support rod 33 for supporting the engaging spring 24 are secured to the pair of the inner rings 36 of the angular bearings 34. As a result, the axial position of the roller 25 is regulated to keep the position relative to the engaging spring 24 constant, and the one-way clutch 21 can operate stably. |
