| 摘要 |
A rolling element clutch (1) includes an outer ring (2), an inner ring (3) and a cage ring (6) mounted there between, which has a plurality of circumferentially spaced cage pockets 8. In each cage pocket 8 is inserted a controlling insert. The inner ring (3) may rotate in freewheeling direction (4) or in blocking direction (5). In order to have a rolling element clutch (1) which retards the rotating elements in an exceptionally slow and smooth manner during rotation of the inner ring (3) in blocking direction (5), there is arranged at least one clutch roller (15) on either side of the controlling insert. Each clutch roller (15) has a relatively long axially extending rotational symmetrical outer surface, which is guided between a cylindrical outer raceway (16) of the outer ring (2) and a cylindrical inner raceway (17) of the inner ring (3). Rolling elements revolving between the outer ring 2 and the inner ring 3 are mounted into each controlling insert running between the outer ring (2) and the inner ring (3) may drive and displace the controlling insert either in freewheeling direction (4) or in blocking direction (5) within its cage pocket. Only during displacement of the controlling insert in blocking direction both clutch rollers (15) of each cage pocket get inclined gradually. The inclination of the clutch rollers (5) continues until the clutch rollers (15) become jammed between the outer raceway (16) and the inner raceway (17), thus blocking the rotational movement of the inner ring (3).
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