Electric oil pump

An electric oil pump comprising:

• a motor that includes a shaft extending in an axial direction with a central axis;
• a pump that is located on one side of the motor in the axial direction and is driven by the motor via the shaft to eject an oil;
• and
• an inverter assembly that is located on another side of the motor in the axial direction and is secured to the motor;
• wherein
• the motor includes:
• a rotor that is secured to the shaft on a side in the axial direction;
• a stator that is located outside the rotor in a radial direction;
• and
• a motor housing that houses the rotor and the stator;
• the pump includes:
• a pump rotor that is attached to the shaft projecting on one side in the axial direction from the motor;
• and
• a pump housing that includes a housing that houses the pump rotor;
• the motor housing has a bottomed tubular shape that includes a bottom portion on a side of the inverter assembly;
• a through-hole that penetrates along the central axis of the shaft is provided at the bottom portion of the motor housing and an end of the inverter housing on the one side in the axial direction;
• the inverter assembly includes an inverter housing that includes a circuit board housing that houses a circuit board and a busbar holder;
• the busbar holder is on a side opposite to a side of an external terminal that is electrically connected to the circuit board with respect to the shaft of the motor in the circuit board housing;
• the busbar holder includes a busbar terminal extending to the through-hole;
• a coil end extending from the stator of the motor is electrically connected to the busbar terminal through the through-hole;
• the busbar holder includes:
• a holder main body portion with a recessed shape that is recessed from one end side to another end side;
• and
• a secured portion that projects farther outward than a width between two ends of the holder main body portion from an end of the holder main body portion on the one end side;
• the holder main body portion is in the circuit board housing such that a recessed end on a side in which the holder main body portion is recessed in the recessed shape is directed to a side of the motor;
• and
• the secured portion is on a projecting portion that projects from a bottom portion of the circuit board housing to the another side in the axial direction and is secured to the projecting portion via a securing fastener.