Honda Motor Co., Ltd.
Torque transmission apparatus

Abstract:

A transmission including a rotating shaft, a planetary gear mechanism, a friction engagement device disposed on radial outside of a ring gear of the planetary gear mechanism, a plate attached to the ring gear so as to face an outer circumferential surface of the ring gears, and a restriction member attached to the ring gear to restrict a movement of the plate in an axial direction. A first oil hole is formed at the ring gear so as to lead an oil supplied from an oil passage inside the rotating shaft to an outside of the ring gear in the radial direction, and a second oil hole is formed at the plate so as to lead the oil led through the first oil hole to the friction engagement device.