| 摘要 |
Means for restricting the axial displacement of a clutch retainer (11a) with respect to a metal inner ring (3a) is configured so that the amount of processing of the inner ring (3a) is reduced. Semispherical concave engaging sections (22) are formed in the cam surface (6) of the inner ring (3a), and semispherical convex engaging sections (23) are formed on the inner-circumferential surface of a rim section (12b) of the clutch retainer (11a). The means for restricting the axial displacement of a clutch retainer (11a) with respect to a metal inner ring (3a) is achieved by engagement between the concave engaging sections (22) and the convex engaging sections (23) when the clutch retainer (11a) is assembled on the outer-diameter side of the cam surface (6). |
