Electric oil pump

An electric oil pump comprising:

• a motor part having a shaft disposed along a central axis that extends in an axial direction;
• a pump part that is positioned on one side of the motor part in the axial direction and is driven by the motor part via the shaft and discharges oil;
• and
• a control part configured to control an operation of the motor part,
• wherein the motor part includes a rotor fixed to the other side of the shaft in the axial direction, a stator disposed to face the rotor, and a motor housing in which the rotor and the stator are accommodated,
• wherein the pump part includes a pump rotor attached to the shaft that protrudes from the motor part to one side in the axial direction and a pump housing having a housing part in which the pump rotor is accommodated,
• wherein the control part includes a plurality of electronic components and a board on which the plurality of electronic components are mounted,
• wherein the plurality of electronic components include a heat generating component,
• wherein the motor housing has a cylindrical part in which the rotor and the stator are accommodated and a plurality of heat dissipating fins that extend from the cylindrical part and radially outward from the motor part and extend from the cylindrical part in a circumferential direction of the cylindrical part,
• wherein the motor housing has a support that supports the plurality of heat dissipating fins, and has a rib extending from the support and connecting the plurality of heat dissipating fins,
• wherein the board has a first surface and a second surface,
• wherein the first surface is a surface that faces the plurality of heat dissipating fins and the support, and the second surface is a surface opposite to the first surface,
• wherein the heat generating component is mounted on the second surface,
• wherein the plurality of heat dissipating fins are disposed at intervals in the axial direction, and
• wherein the length of the plurality of heat dissipating fins in the circumferential direction is longer on a radially inner side than on a radially outer side when seen from the axial direction.