Hybrid drive device

A hybrid drive device that includes:

• 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 means for supplying lubricant to the friction engagement element, the friction engagement element being provided in the vicinity of the partition wall,
• the hybrid drive device being characterized in that a through hole that communicates the first space and the second space is formed in the partition wall while facing the friction engagement element.