| 摘要 |
PROBLEM TO BE SOLVED: To reduce an inductive thrust and easily realize low vibration. SOLUTION: In the uniform universal coupling provided with an outside coupling member 1 in which axial three track grooves 4 are formed at the inner periphery and having axial roller guide faces 5 at both sides of each of the track grooves 4, a triport member 2 having radially projected three legs 6, rollers 9 contained in the track grooves 4 of the outside coupling member 1, and rings 7 externally fitted in the leg 6 and rotatably supporting the roller 9 and in which the roller 9 is movable in the axial direction of the outside coupling member 1 along the roller guide face 5, the outer peripheral face of the leg 6 has a convexedly curved vertical section shape and has also a round circle or nearly elliptic cross sectional shape and the inner peripheral face of the ring 7 has a vertical sectional shape with a radius of curvature R', having a recessed arc 11 larger than the radius of curvature R, and the ring 7 and the rollers 9 are made to be relatively movable in the axial direction.
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