| 摘要 |
<p>A universal joint comprises a tubular outer joint member having a plurality of grooves therein and a concave spherical surface within which is moveably mounted a cage having a plurality of openings in which balls are positioned. The inner surface of the cage is provided with a concave spherical opening within which is moveably mounted an inner joint member having circumferentially spaced grooves there around. Each ball is located in opposed grooves of the inner and outer joint members and the balls are disposed in a plane passing through the axes of the outer and inner joint members. Because of play in the joint brought about by manufacturing tolerances the balls are subjected to a force which displaces the balls from the homokinetic plane. Means are therefore provided on a member of the joint which either coacts with the balls or another member of the joint to increase the angle between the plane passing through the balls and the axis of the inner joint member to control the alignment direction of the balls.</p> |
