| 摘要 |
PURPOSE:To improve the rigidity of an outer ring by connecting the part between two annular plate parts which constitute the main parts for connecting a shaft hole and a wedge-shaped hook, through an annular bent part. CONSTITUTION:An outer ring 6 is constituted of a boss part 7, an annular main part 8, and a wedge-shaped hook 9 formed in bending on one side from the outer periphery of the main part 8, and the inner surface of the wedge- shaped hook 9 is formed into an inclined surface acting as wedge surface. Further, the main part 8 consists of two annular plate parts arranged in eccentricity in the axial direction, and an arcuate form is formed between two annular plate parts, and bent in the radial direction at three positions. A rolling element 5 performs an engaging action with a driving wheel 4 and the inner surface of the wedge shaped hook 9. With this constitution, even if the main part 8 of the outer ring 6 has a relatively wide surface, the rigidity of the outer ring 6 can be improved, since the annular plate part is divided and connected by the bent part. |
