Rotary structure of a heat dissipating fan
The invention discloses a rotary structure of a heat dissipating fan capable of maintaining the operation of an axle of the heat dissipating fan along a single axial line by means of a base of the heat dissipating fan and two fixing members disposed at two contact ends of the axle of the heat dissipating fan, so that the axle will not be deviated or collided to produce abnormal noises when the heat dissipating fan is operated.
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The present invention relates to a rotary structure of a heat dissipating fan, and more particularly to a rotary structure that maintains the operation of a heat dissipating fan along a single axial line to reduce abnormal noises.
BACKGROUND OF THE INVENTIONThe present fans for making airflows or achieving a heat dissipation effect are divided into many types according to the using environments and their applications. As the science and technology advances, the information and communication industries are developed in a fast pace, such that the usage of a heat dissipating fan for precision electronic technological products is increased. The heat dissipating fan for high-power and high-speed precision electronic technological products comes with a small size in order to work with the electronic products, and the heat dissipating fan produces airflow to solve a high temperature produced by high power and dissipate the heat to maintain the operation at a specific temperature. If it is unable to effectively dissipate the heat produced by the operation of the product, then the related components of the product may be overheated and damaged by the excessively high temperature, or more seriously a fire accident may occur. Therefore, a vast majority of precision electronic and technological products come with a fan to achieve the heat dissipating effect.
An improved structure of a prior art heat dissipating fan includes a vane radially extended from a heat dissipating fan, and a base having a rotary space for accommodating the heat dissipating fan, and the base installs a circuit board and a coil for introducing electric power to drive the heat dissipating fan to rotate, and the heat dissipating fan includes an axle disposed at its center and a bearing disposed on the base corresponding to the axle. As to the current technology, the volume of installing the heat dissipating fan is limited, and thus the performance of the heat dissipating fan mainly depends on the rotary speed of the heat dissipating fan. However, the axle and the bearing will produce high heat due to excessive frictions produced by high-speed rotations, and the axle will be deviated easily to collide with the bearing and produce abnormal noises. Therefore a durable wearing-resisting ceramic bearing is developed, but the ceramic bearing has a high hardness, and thus it is very difficult to be fixed or designed. Furthermore, the high heat issue produced by the friction still cannot be avoided effectively.
SUMMARY OF THE INVENTIONThe primary objective of the present invention is to overcome the foregoing shortcomings and avoid the existing deficiencies by providing a rotary structure of a heat dissipating fan capable of maintaining the operation of an axle of the heat dissipating fan along a single axial line by means of a base of the heat dissipating fan and two fixing members disposed at two contact ends of the axle of the heat dissipating fan, so that the axle will not be deviated or collided to produce abnormal noises when the heat dissipating fan is operated.
Another objective of the present invention is to provide a rotary structure of a heat dissipating fan that comprises a contact end of the axle having an external diameter smaller than the axle to reduce the contact area and friction between the axle and the fixing member, and thus avoiding the high heat produced by frictions.
BRIEF DESCRIPTION OF THE DRAWINGS
The technical contents of the present invention will now be described in more detail hereinafter with reference to the accompanying drawings that show various embodiments of the invention.
Referring to
Referring to
Regardless of the preferred embodiments, different materials can be selected to make the high-speed heat dissipating fan (such as the bearing 34 is made of a durable ceramic material) to reduce the high heat so produced.
While the invention has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.
Claims
1. A rotary structure of a heat dissipating fan, comprising:
- a heat dissipating fan, comprising a main body and a plurality of vanes radially extended from said main body, and said main body including an axle having a contact end separately disposed on both sides of said main body; and
- a base, having a rotary space for accommodating said heat dissipating fan, and said rotary space installing a driving mechanism for driving said heat dissipating fan to rotate, and said base comprising two fixing members disposed at two contact ends corresponding to said axle for maintaining the rotation of said axle along a single axial line.
2. The rotary structure of a heat dissipating fan of claim 1, wherein said fixing member comprises two fixing frames coupled with said base and a bearing disposed on said fixing frame and coupled to said contact end.
3. The rotary structure of a heat dissipating fan of claim 2, wherein said fixing frame is integrally coupled to said base.
4. The rotary structure of a heat dissipating fan of claim 3, wherein said base comprises a disposing member and a lid, and said fixing frame is respectively and integrally coupled with said disposing member and said lid.
5. The rotary structure of a heat dissipating fan of claim 2, wherein said base comprises a fixing section for coupling to said fixing frame.
6. The rotary structure of a heat dissipating fan of claim 2, wherein said contact end has an external diameter smaller than the external diameter of said axle, and said bearing includes a rotary groove having an external diameter equal to the external diameter of said contact end.
7. The rotary structure of a heat dissipating fan of claim 6, wherein said contact end is tapered from the external diameter of said axle.
8. The rotary structure of a heat dissipating fan of claim 1, wherein said contact end has an external diameter smaller than the external diameter of said axle.
9. The rotary structure of a heat dissipating fan of claim 8, wherein said contact end is tapered from the external diameter of said axle.
10. The rotary structure of a heat dissipating fan of claim 1, wherein said contact end is sunk from an end of said axle, and said bearing includes a braking section extended towards said contact end.
11. The rotary structure of a heat dissipating fan of claim 10, wherein said braking section and said contact end have an identical shape.
Type: Application
Filed: Aug 30, 2005
Publication Date: Mar 1, 2007
Applicant:
Inventor: Chin-Wen Chou (Taipei Hsien)
Application Number: 11/213,929
International Classification: F01D 15/12 (20060101);