| 摘要 |
PURPOSE:To prevent the generation of slip even if a roller and a guide groove are in the relation of oblique crossing each other by making each roller freely oscillating for each port. CONSTITUTION:A port 4 is formed so as to have an outer diameter spherical surface 6 having a relatively gentle curvature and is formed so as a roller 5 to have an inner diameter cylindrical surface 7, and both surfaces 6 and 7 are inserted each other through a needle bearing 8, and the roller 5 is made free oscillating on each port 4. Then, as to an outer element 1 and inner element 3, when one revolves, the other is revolved accompanied with, and between the both 1 and 3, power transmissin in uniform velocity is performed. When power is transmitted, both elements 1 and 3 being bent, the roller 5 oscillates freely and is automatically set in the direction of axis line of each guide groove 2, and each roller 5 shifts through rolling on the guide groove, and a large slip is not generated between the both 5 and 2.
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