Patent ID: 8092196

Claim:
A sleeve supporting structure for an automatic transmission, the automatic transmission including an input shaft, a motor and an oil pump with an inner gear which are disposed adjacent to each other in an axial direction of the input shaft, the sleeve supporting structure comprising: a sleeve member that is disposed on a radial outside of the input shaft, the sleeve member is configured to transmit rotation of the input shaft to the inner gear of the oil pump, a rotational shaft portion that is disposed in the motor; an oil pump housing that accommodates the inner gear; and a stationary member that supports an outer circumferential surface of the rotational shaft portion, the stationary member including a projection that projects toward a side of the oil pump, wherein the sleeve member has one axial end portion that is overlapped with the rotational shaft portion in a radial direction of the sleeve member and an opposite axial end portion that is in meshing engagement with the inner gear, and the sleeve member is supported by an inner circumferential surface of the oil pump housing and an inner circumferential surface of the rotational shaft portion, and wherein the projection of the stationary member is fitted onto an outer circumferential surface of the oil pump housing so as to form a faucet joint in cooperation with the oil pump housing.