Supporting structure for one-way clutch

摘要

A structure for supporting a one-way clutch (25) between a planetary gear mechanism (26a) and the casing (18) of an automatic transmission. The one-way clutch (25) prevents reverse rotation of a speed-change gear. In the one-way clutch (25), an outer race (47) and the planetary gear mechanism (26a) are integrally fixed to each other. An inner race (46) and the casing (18) are in meshing engagement with each other through a spline (45) formed therebetween. Further, a meshing clearance (S) is formed in the spline (45) such that the inner race (46) can move radially relative to the casing (18) within a range of maintaining the meshed state. <IMAGE>