Alternator
US7242120B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2005 |
| Grant date | Jul 10, 2007 |
| Priority date | — |
| Expiry date | Aug 26, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/1732
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An automotive alternator according to the present invention includes: a shaft having an end portion rotatably supported by a rear bearing housed inside a rear bearing housing portion of a rear bracket; a rectifier for converting an alternating current into a direct current; and a first centrifugal fan for cooling a rotor, a stator, and the rectifier by sucking in external air through a suction inlet in the bracket when the rotor rotates, the rectifier has a positive-side heat sink for cooling a plurality of positive-side diodes, the suction inlet is formed in a vicinity of the rear bearing housing portion, and a plurality of rear bearing cooling fins extending in a direction perpendicular to the shaft are formed on a side of the suction inlet near the rear bearing housing portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.