| 摘要 |
PROBLEM TO BE SOLVED: To suppress the generation of noise and prevent a retainer from wearing and being damaged. SOLUTION: In one of a plurality of openings 61 to 67, a protruded portion 82a of a certain shoe 80 of a plurality of shoes slidably contacts a retainer 53 in its radial direction, wherein the opening area of the openings 62 to 67 excepting the opening 61 is larger than the moving area of a protruded portion 52 of a shoe 52a excepting the shoe 80. During the rotation of a nutation plate 10, only the protruded portion 82a of the shoe 80 reciprocates along the radial direction of a retainer 53 contacting the inner circumferential surface of a plurality of openings 61 of the retainer 53, while the protruded portion 52a of the reset shoe 50 is engaged in precessional action without contacting the inner circumferential surface of the openings 62 to 67 of the retainer 53 of the openings. |
