Brush holder in electric motor
US7671505B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2006 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Sep 10, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/148
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric motor includes a cylindrical yoke with a bottom; a bracket that covers an opening of the yoke; and a brush holder. The brush holder includes a brush housing portion, with the brush housing portion having three side piece portions, excluding a bottom piece portion, integrally formed; a first disk portion; and a second disk portion. The first disk portion and the second disk portion are integrated with the bottom piece portion of the brush housing portion. A ring-shaped abutting surface and the bottom piece portion of the brush housing portion are formed on a bracket-side disk surface of the brush holder. The abutting surface is formed as a holding portion that is pressed to the yoke by the bracket via a bracket-side elastic member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.