| 摘要 |
PROBLEM TO BE SOLVED: To achieve a structure that facilitates all of part manufacturing, part management and assembling wok, facilitates cost reduction, and further stabilizes a speed change operation.SOLUTION: An inside support beam 28 displaceable while oscillating together with a trunnion 7b is arranged at the trunnion 7b at the inside with respect to the radial direction of each disc rather than a power roller 6a. A cap 27 arranged at the tip of support shaft 12a of an outer ring 16b is press-pushed toward a support beam 23a of the trunnion 7b by using a coil spring 32 arranged in the middle of a base 29 of the inside support beam 28. By this arrangement, the power roller 6a becomes difficult to be displaced to the axial direction of the support beam 23a, and a speed change operation is stabilized. |
