Single-bearing fan structure
US8057173B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2009 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Jun 23, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D25/062
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A single-bearing fan structure includes a fan frame having a bearing cup with a bearing received therein, the bearing cup having a radially inward protruded lip portion formed at a first end to abut on a top of the bearing, and a groove internally formed at a second end; a blade hub having a rotary shaft fixedly connected thereto with a distal end of the rotary shaft inserted into the bearing; a retainer engaged with the groove; a first elastic element fitted around the rotary shaft and located between the blade hub and the bearing; and a second elastic element received in the bearing cup and located between the bearing and the retainer. The first and second elastic elements and the bearing respectively axially and radially support the blade hub, enabling the fan structure to operate stably and have extended service life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.