| 摘要 |
A hybrid drive device including a drive device input shaft coupled to an engine, a rotary electrical machine, a transmission shifting and outputting rotary drive transferred from the rotary electrical machine or the drive device input shaft or the both of them, a transmission case accommodating the transmission, and a rotary electrical machine case having a joint surface joining with the transmission case, a step portion with a diameter which is reduced when seen from an input shaft input end side is provided in an inner peripheral portion of the rotary electrical machine case, and a partition wall supporting the rotary electrical machine from the input shaft input end side is fixed to the step portion.
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