Motor including flow rectification section and bulk reduction section
US11316409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2018 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Jan 30, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor includes a holder having an annular plate shape with a plate thickness in an axial direction of a rotor housing, and including a flange section disposed so the rotor housing rotates at an inner side of the flange section, a center piece including a plate-shaped section opposing the flange section, and a heat sink including a heat dissipation section projecting from the plate-shaped section toward the flange section. The flange section integrates with a flow rectification section including a cooling air flow rectification face extending along a cooling air flow path between the flange section and the plate-shaped section. The heat dissipation section is disposed in the cooling air flow path. The cooling air flow rectification face closely opposes the top of the heat dissipation section. A bulk reduction section is between the cooling air flow rectification face and the flange section opposite of the plate-shaped section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.