Shaft structure for cooling fan rotor
US7165939B2 · kind B2 · utility
15Cited by
1References
18Claims
0Family size
Inventors
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Sep 30, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/263
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan shaft structure includes an annular groove portion, an end head adjacent to the groove portion, and several teeth equally spaced around the surface of the shaft. The annular groove portion, end head and teeth constitute an insert part of the fan shaft, around which the plastic fan blade is molded by insert molding. The present invention enables the center part of the fan blade to enwrap the insert part of the shaft, and firmly engage with the shaft. It is, therefore, not only able to enhance the robustness of the combination but also successful in preserving the adhesion effect between the shaft and the fan blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.