Drive device

A drive device comprising:

• a rotor including a motor shaft disposed along a center axis extending in one direction and a rotor core fixed to the motor shaft;
• a stator radially opposed to the rotor with a gap interposed between the stator and the rotor;
• a housing including an accommodation portion to store oil and accommodate the rotor and the stator;
• and
• a pump driven through the motor shaft;
• wherein
• the pump includes:
• an external gear fixed to an end on one side in an axial direction of the motor shaft;
• an internal gear that surrounds a radial outside of the external gear and meshes with the external gear;
• a pump room accommodating the internal gear and the external gear;
• a suction port through which the oil is to be sucked into the pump room;
• and
• a discharge port through which the oil is to be discharged from the pump room;
• the housing includes an outer lid in which the pump room is provided;
• the outer lid includes:
• a shaft insertion hole penetrating the outer lid from a surface on the other side in the axial direction of the pump room to a surface on the other side in the axial direction of the outer lid, the motor shaft being inserted into the shaft insertion hole;
• and
• a support defining at least a portion of the surface on the other side in the axial direction of the pump room and at least a portion of a radially inside surface of the shaft insertion hole;
• and
• the support journals the motor shaft on a radial outside of the motor shaft.