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Fan and manufacturing method thereof

Inactive Publication Date: 2012-03-08
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]It is an object of the present invention to provide a fan and a manufacturing method thereof so as to simplify the mold for the impeller, avoid the problem of abrading the rotating shaft and simply the process of producing the rotating shaft.
[0007]It is another object of the present invention to provide a fan and a manufacturing method thereof so as to reduce an overall thickness of the fan and achieve the slimness of the fan.

Problems solved by technology

The conventional impeller, however, still has some drawbacks.
In addition, the overall height of the impeller is too high.

Method used

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  • Fan and manufacturing method thereof
  • Fan and manufacturing method thereof
  • Fan and manufacturing method thereof

Examples

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Embodiment Construction

[0022]The present invention will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only. It is not intended to be exhaustive or to be limited to the precise form disclosed.

[0023]FIG. 2A is a schematic perspective view illustrating an impeller of a fan according to an embodiment of the present invention. FIG. 2B is a schematic exploded view illustrating the impeller of FIG. 2A. FIG. 2C is a schematic cross-sectional view illustrating the impeller of FIG. 2A. Please refer to FIGS. 2A, 2B and 2C. The impeller 2 comprises a hub 20, plural blades 21, a metallic case 22 and a rotating shaft 23. The metallic case 22 is sheathed by the hub 20. The blades 21 are disposed around the outer periphery of the hub 20. In addition, the blades 21 and the hub 20 are integrally formed by a plastic injection molding p...

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Abstract

A fan includes a motor base, a bearing, an impeller, a stator and a magnetic element. The motor base has a bearing stand in a center portion thereof. The bearing is accommodated within the bearing stand. The impeller includes a metallic case, a hub, plural blades and a rotating shaft. The metallic case has a top surface and a sidewall. The hub is sheathed around the metallic case. The blades are disposed around an outer periphery of the hub. The rotating shaft is protruded from a center portion of the top surface and penetrated through the bearing stand, wherein no raised ring structure is formed in the top surface of the metallic case, and the rotating shaft and the metallic case are jointed together by a laser welding process. The magnetic element is disposed on an inner wall of the metallic case and aligned with the stator.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a fan, and more particularly to a slim-type fan. The present invention also relates to a method of manufacturing such a fan.BACKGROUND OF THE INVENTION[0002]With rapid development of high-tech industries, various electronic devices such as computer or servers become essential in our lives. As known, the heat-dissipating efficacy of the electronic device influences the operating stability and the use life of the overall system. For increasing the heat-dissipating efficacy and the operating stability of the electronic device, a fan is usually installed within the electronic device or installed in the ambient environment to cool the electronic device. Typically, a conventional fan comprises an impeller and a motor. FIG. 1A is a schematic perspective view illustrating an impeller of a conventional fan. FIG. 1B is a schematic exploded view illustrating the impeller of FIG. 1A. FIG. 1C is a schematic cross-sectional view illustr...

Claims

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Application Information

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IPC IPC(8): F01D25/16B21D53/78B23K26/21F04D29/28
CPCY10T29/49316F04D29/281F04D17/16F04D25/062F04D29/023F04D29/4226F04D25/0613F04D25/08F04D29/056F04D29/329F04D29/403
Inventor CHEN, CHIU-KUNGWANG, CHUN-CHIHWANG, BING-FENG
Owner DELTA ELECTRONICS INC