Motor device and oil pump device
US12355338B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2024 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Apr 24, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/2039
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor device includes an electric motor, a control board on which a control circuit controlling the electric motor is mounted, a metal housing supporting a first surface of the control board, a resin cover attached to the housing to cover a second surface of the control board opposite to the first surface and the periphery of the control board, and a heat dissipation member dissipating heat generated by a heating element included in the control circuit to the housing. The heat dissipation member includes a heat reception plate fixed to the cover, and a heat transfer plate protruding toward the housing. The housing includes, outside the motor accommodation space, a reception portion receiving a protrusion end of the heat transfer plate inserted in a direction in which a rotation shaft extends, and a heat exhaust wall extending in the and coming into surface contact with the heat transfer plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.