| 摘要 |
<p>A rotation-preventing/thrust-bearing device (23) for use in an orbiting-member fluid displacement apparatus is disclosed. The rotation-preventing/thrust-bearing device (23). includes a discrete fixed portion, a discrete orbital portion and bearing elements. The fixed portion includes a fixe race (231) and ring placed in a groove (113) in an inner surface of the housing. The fixed race (231) and ring (232) are attached to the housing by pins (233), and the inner peripheral edge of the groove (113) is caulked to the fixed ring (332). The orbital portion includes an orbital race (234) and ring (235) placed in a groove (224) in an end plate (221) of the orbiting members (22). The orbital race (234) and ring (235) are attached to the end plate (221) of the orbiting member by pins (236), and the outer peripheral edge of the groove (224) in the end plate is caulked to the orbital ring (235). A plurality of pockets (232a 235a) are formed axially in the rings (232, 235) toward the respective races (231, 234). The pockets of the rings face one another in generally aligned pairs. A bearing element (237) is received in each aligned pair of pockets (232a, 235a) to pre vent the rotation of the orbiting member (22) by the bearing elements (237) interacting with the orbital and fixed ring: (232, 235) and to carry the axial thrust load from the orbiting member (22). The rotation of each ring (232, 235), which i caused by protation-preventing operation, is prevented by both the pins (233, 236) and the caulked connection.</p> |
