| 摘要 |
PROBLEM TO BE SOLVED: To provide a light-weight constant-velocity joint capable of dispensing with grease lubrication. SOLUTION: A trunnion member 11 is built in an outer ring 1 having a hollow hole surrounded by six flat faces 2 in parallel with an axis, and three first spherical faces 12a kept into contact with the flat faces at positions displaced from a central position in the circumferential direction of the flat faces 2 to one side in the circumferential direction, and three second spherical faces kept into contact with the flat faces at positions displaced from the central position to the other side, are alternately formed in the circumferential direction at an outer periphery of the trunnion member 11. The outer ring 1 and the trunnion member 11 are respectively composed of moldings of synthetic resin, thus the grease lubrication is unnecessary and a weight of the constant-velocity joint can be reduced. COPYRIGHT: (C)2007,JPO&INPIT
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