| 摘要 |
The kinematic joint has a cup with three longitudinal cut outs extending axially regularly around the periphery and each containing two opposed displacement paths (1). There is also a tripod, placed on the periphery, with three spherical trunnions (2). Each trunnion is mobile in rotation and translation around its centre on the inside of the cylindrical surface (3a) of an inside sleeve (3) whose outside surface forms a rolling path for needle bearings (4). These needles roll on the interior surface (5a) of a roller (5) whose outer surface (5b) corresponds to the path. The cohesion of the unit (3,4,5) is assured by the stop (5e) and an elastic retaining ring (6) and also onto the trunnion. The joint is characterised in that the needle rollers are held in position by the shoulder (3c) on the sleeve and from the tripod end by the stop held in position by the retaining ring fixed to the ring outside of the roller.
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