Patent ID: 8142317

Claim:
A power transmission apparatus of a hybrid vehicle comprising: an input shaft connected to an internal combustion engine, a power conversion unit including first and second rotating electric machines aligned in an axial direction and a planetary gear to convert power applied from said input shaft, and a power output unit transmitting power output from said power conversion unit to a drive shaft of the vehicle, wherein said power conversion unit is formed separately from said power output unit, said first and second rotating electric machines of said power conversion unit are stored in a unitary housing, said first and second rotating electric machines both can be inserted into said housing from a direction distant from said internal combustion engine, said first rotating electric machine includes a first rotation shaft, said second rotating electric machine includes a second rotation shaft, said input shaft is arranged at an inner circumferential side of said first and second rotation shafts, a first bearing supporting said first rotation shaft is provided between an outer circumferential face of said input shaft and an inner circumferential face of said first rotation shaft, a second bearing supporting said second rotation shaft is provided between the outer circumferential face of said input shaft and an inner circumferential face of said second rotation shaft, and said first and second rotation shafts are supported, in the direction of a diameter thereof, to said housing through said input shaft.