One aspect of a pump of the present invention includes a rotor rotatable about a central axis, a stator assembly located radially outside the rotor and surrounding the rotor, a pump unit connected to a first side in an axial direction of the rotor, a support member including a rotor accommodating portion, the rotor accommodating portion being located radially inside the stator assembly and accommodates the rotor therein, and a resin housing in which the stator assembly and the support member are molded. The rotor accommodating portion includes a lid portion that covers the rotor from a second side in the axial direction, and a tubular portion that is located between the rotor and the stator assembly in a radial direction and is open to the first side in the axial direction. The stator assembly includes a stator core having an annular shape, a plurality of coils mounted on the stator core, and a stator cover that covers the plurality of coils.

One aspect of a pump of the present invention includes a rotor rotatable about a central axis, a stator assembly located radially outside the rotor and surrounding the rotor, a pump unit connected to a first side in an axial direction of the rotor, a support member including a rotor accommodating portion, the rotor accommodating portion being located radially inside the stator assembly and accommodates the rotor therein, and a resin housing in which the stator assembly and the support member are molded. The rotor accommodating portion includes a lid portion that covers the rotor from a second side in the axial direction, and a tubular portion that is located between the rotor and the stator assembly in a radial direction and is open to the first side in the axial direction. The stator assembly includes a stator core having an annular shape, a plurality of coils mounted on the stator core, and a stator cover that covers the plurality of coils.

A brushless motor is provided that includes a stator assy and a rotor. The stator assy includes a stator, a housing that has a space where the stator is disposed, and an insulating resin disposed in the space. The insulating resin fixes the housing to the stator. The housing includes a first housing member and a second housing member. The insulating resin also fixes first housing member to the second housing member.

A brushless motor is provided that includes a stator assy and a rotor. The stator assy includes a stator, a housing that has a space where the stator is disposed, and an insulating resin disposed in the space. The insulating resin fixes the housing to the stator. The housing includes a first housing member and a second housing member. The insulating resin also fixes first housing member to the second housing member.

Provided is a waterproof fan which includes: a rotor; a stator including a winding; a circuit board supplying power to the winding; a resin frame including an undersurface located on one side of a rotation axis of a rotor, and a housing space opening on the other side of the rotation axis, to house the circuit board; a waterproofing resin portion covering the stator and closing an opening of the housing space; a bearing rotatably supporting the rotating shaft portion; and a cylindrical metal bearing holder extending along the rotation axis and supporting the bearing, in which the frame includes a tubular holder protection portion extending from the undersurface to the other side of the rotation axis and covering at least a part of an outer peripheral surface of the bearing holder, and the holder protection portion separates the stator from the bearing holder.

Provided is a waterproof fan which includes: a rotor; a stator including a winding; a circuit board supplying power to the winding; a resin frame including an undersurface located on one side of a rotation axis of a rotor, and a housing space opening on the other side of the rotation axis, to house the circuit board; a waterproofing resin portion covering the stator and closing an opening of the housing space; a bearing rotatably supporting the rotating shaft portion; and a cylindrical metal bearing holder extending along the rotation axis and supporting the bearing, in which the frame includes a tubular holder protection portion extending from the undersurface to the other side of the rotation axis and covering at least a part of an outer peripheral surface of the bearing holder, and the holder protection portion separates the stator from the bearing holder.

The present disclosure provides an electric compressor comprising a main housing, a motor part disposed in the main housing and comprising a stator comprising a rotor accommodating portion and a rotor rotatably disposed in the rotor accommodating portion, a compression part rotatably connected to the motor part, and an inverter part electrically connected to the motor part. The motor part is disposed in a motor room formed inside the main housing, the stator comprises a plurality of insulating protrusions protruding from an outer circumferential surface of the stator, and the plurality of insulating protrusions is configured to be brought into contact with an inner circumferential surface of the motor room.

The present disclosure provides an electric compressor comprising a main housing, a motor part disposed in the main housing and comprising a stator comprising a rotor accommodating portion and a rotor rotatably disposed in the rotor accommodating portion, a compression part rotatably connected to the motor part, and an inverter part electrically connected to the motor part. The motor part is disposed in a motor room formed inside the main housing, the stator comprises a plurality of insulating protrusions protruding from an outer circumferential surface of the stator, and the plurality of insulating protrusions is configured to be brought into contact with an inner circumferential surface of the motor room.

An electric actuator comprises a motor and a plate, wherein the motor has an electric contact in electrical contact with the plate. An intermediate shaft is in contact with the plate. A controller is fixed to an upper part of the actuator. The controller has an electrical output electrically communicating with the electric contact of the motor through the intermediate shaft and the plate.

A reduction gear configured to decelerate and output rotation of a motor by two-stage planetary gear mechanisms disposed side by side in an axial direction includes: a case made of resin, the case being formed into a cylindrical shape in which the two-stage planetary gear mechanisms are incorporated, and having at least one of a lid portion and a bottom portion provided at each of both axial ends; and a reinforcing component that is formed of a material having a Young's modulus higher than a Young's modulus of a material of the case. The reinforcing component extends along at least a part of an inner peripheral surface in an axial central portion of the case.