Patent ID: 11870326
Assignee: HITACHI ASTEMO, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. An electric drive apparatus comprising:
a motor housing configured to house an electric motor, wherein the electric motor includes a stator, a rotor, and a rotating shaft fixed to the rotor, and is configured to drive a controlled object of a mechanical system;
a permanent magnet provided at an axial end of a rotating shaft of the electric motor;
an electronic control section arranged at the axial end of the rotating shaft of the electric motor, and configured to control the electric motor, wherein the electronic control section includes a board provided with a first electrical component and a sensing part for sensing rotation of the rotating shaft in cooperation with the permanent magnet;
a cover fixed to the motor housing to house and seal liquid-tightly the electronic control section; and
a second electrical component;
wherein the motor housing includes an axial end part having an outer face facing away from the electric motor, wherein the outer face of the axial end part includes a step between a first level and a second level of the outer face of the axial end part such that the second level is higher in an axial direction of the motor housing than the first level;
the board is placed on the second level of the axial end part of the motor housing;
the second electrical component is placed on the first level of the axial end part of the motor housing and apart from the board such that the second electrical component is closer to the electric motor than the second level of the axial end part of the motor housing; and
the permanent magnet projects toward the board with respect to the first level of the axial end part of the motor housing.