Single phase brushless motor
US10110102B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2015 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Nov 28, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K21/225
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A single phase brushless motor includes a stator and a rotor. The stator includes a stator core and stator windings wound on the stator core. The stator core includes a yoke portion, and first and second pole portions extending inwardly from the yoke portion. An end surface of the first pole portion includes a first arc surface having a first groove. An end surface of the second pole portion includes a second arc surface having a second groove. The first and second arc surfaces are opposed to each other and define a receiving space therebetween. The rotor includes a rotary shaft and permanent magnetic poles fixed to the rotary shaft. The permanent magnetic poles are received in the receiving space. A substantially uniform gap is formed between the first arc surface and the second arc surface and the permanent magnetic poles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.