Patent ID: 7632201

Claim:
A hybrid drive apparatus comprising: an input shaft that is drivingly coupled to an engine and an output shaft that is drivingly coupled to a wheel; a first motor and a second motor; a power distributing planetary gear comprising first, second, and third rotary elements, the first motor being connected to the first rotary element, the input shaft being connected to the second rotary element, and an intermediate transmission shaft and the second motor being connected to the third rotary element; a transmission having a plurality of shift speeds and that outputs power transferred from the intermediate transmission shaft to the output shaft, wherein the plurality of shift speeds of the transmission comprise at least (1) an acceleration shift speed in which a rotation speed of the intermediate transmission shaft is increased and output to the output shaft, and (2) a deceleration shift speed in which the rotation speed of the intermediate transmission shaft is decreased and output to the output shaft; and a partition wall provided between a motor part including the first motor and the second motor and a transmission part including the transmission such that the intermediate shaft passes through the partition wall, wherein: the transmission comprises a first brake, a first clutch and a second clutch for transferring the rotation of the intermediate transmission shaft, and a shifting planetary gear set comprising first, second, third, and fourth rotary elements in order of rotation speed, the first rotary element is selectively fixed to a case by the first brake, the rotation of the intermediate transmission shaft is selectively transferred to the second rotary element by the second clutch, the third rotary element is capable of outputting an output rotation to the output shaft, the rotation of the intermediate transmission shaft is selectively transferred to the fourth rotary element by the first clutch, the first clutch and the second clutch are disposed between the shifting planetary gear set and the second motor, and an output side transfer member of the first clutch is coupled to the fourth rotary element of the shifting planetary gear set on an inner diameter side of an output side transfer member of the second clutch.