Hybrid drive device

A hybrid drive device comprising:

• a case main body having i) at least one partition wall, ii) a first case part and iii) a second case part in which a first space and a second space divided by the partition wall are respectively formed;
• an electric motor that includes i) a stator fixed to the first case part and having a winding wire, ii) a rotor shaft provided in the stator for free rotation, and iii) a rotor fixed to the rotor shaft;
• a rotary shaft being coaxial with the rotor shaft and rotatable together with the rotor shaft;
• a friction engagement element that includes i) a first friction member spline-coupled to an inner peripheral part of the second case part, ii) a hub supported by the rotary shaft, and iii) a second friction member that is spline-coupled to the hub and that is frictionally or non-frictionally engaged with the first friction member;
• and
• lubricant supply portion that supplies lubricant to the friction engagement element, the friction engagement element being provided in the vicinity of the partition wall,
• wherein:
• a through hole that communicates the first space and the second space is formed in the partition wall while facing the friction engagement element, and
• the lubricant is supplied to the friction engagement element, and subsequently the lubricant is supplied to the second space, the through hole, and the first space in sequence to cool the winding wire.