Motor device
US10811940B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2018 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Feb 23, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2211/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor device that can secure the detection precision of the rotational angle of a motor is provided. A motor device has a motor housing, a heat sink, a motor cover, a motor, and a substrate. An opening portion of the motor housing is covered by the motor cover which is made of a magnetic body such as iron in a roofed tubular shape. A choke coil is provided on a surface of the substrate on the side opposite to the motor. A magnetic sensor is provided on a surface of the substrate on the side of the motor. A housing portion is provided at a roof portion of the motor cover. The choke coil, which is mounted on the substrate, is surrounded by the housing portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.