| 摘要 |
PROBLEM TO BE SOLVED: To improve the transmission efficiency to provide the stable motion and to event the generation of noises in the operation by supporting the radial load to be added between the rotary shafts by an intermediate roller as a guide roller, and controlling the assembling direction in an used state. SOLUTION: Two intermediate rollers among three intermediate rollers are used as the guide rollers 10a, 10b, the remained one is used as a wedge roller 11c. In a case of a friction roller-type transmissin 28, the torque is freely transmitted when a central roller 4a is rotated anticlockwise, and the torque is not transmitted when the central roller 4a is rotated clockwise. The assembling direction of the transmission 28 is controlled so that the radial load is applied on an intermediate part of a straight line connecting a center of an output shaft and a center of pivot shafts 7a', 7b' supporting the guide rollers 10a, 10b. Whereby the displacement in the diameter direction of an outer ring 15a is prevented, and the inclination of the output shaft fixed to the outer ring 15a is prevented and the operation can be stabilized.
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