| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent wear by improving the affinity of thrust plates with a carrier and a planetary gear without increasing the number of parts of a planetary gear device, and to facilitate the assembling of the planetary gear by positioning the thrust plates with respect to a planetary gear shaft hole of the carrier and preventing the thrust plates from falling off. <P>SOLUTION: The carrier 22 has convex seats 22h, 22p opposing the side face of the planetary gear 4 around a planetary gear shaft hole 22g. Engagement means of raised parts 24a, 24b raised and formed toward the carrier 22 side, an annular projection 24d, a cut and raised projection 24k, and a hemispherical projection 24n are formed at inner peripheral edges, outer peripheral edges, or on the same circumference of plate faces of the thrust plates 24, 24A and 24B. In correspondence to the above, engagement means for inclined side wall faces 22j, 22k, perpendicular side wall faces 22j', 22k', and an annular groove 22s are formed on the convex seats 22h, 22p. The engagement means of the carrier 22 and the thrust plates 24, 24A, 24B are engaged with each other to allow rotation in circumferential directions of the thrust plates 24, 24A, 24B while regulating movements in the radial direction. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
