| 摘要 |
The universal joint (10) comprises a bearing block (40) which has a pair of cylindrical receptacles (50, 60) disposed perpendicularly relative to one another, each cylindrical receptacle (50, 60) being C-shaped to receive therein respective cylindrical members (14, 16; 34, 36) of two rotatable members (12, 30). The bearing block (40) includes a circumferential wall (70) extending between adjacent ends of each cylindrical receptacle (14, 16; 34, 36) in order to provide grooves (74) for capturing and retaining a securement ring (80). An alternative embodiment (110) provides a rotatable member (112) having a hemispherical head (113) with an interior cavity (117), the hemispherical head (113) having transverse openings (118) for the reception of a pin (125) which extends through a receptacle (160) of the bearing block (140) to rotatably secure the block (140) within the interior cavity (117). The cylindrical members (134, 136) of the other rotatable member (130) are captured within the other cylindrical receptacle (150) of the bearing block (140) and the securement ring (180) secured in the grooves (174) and about the circumference of the bearing block (140).
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