Blade axis that possesses a reduced frictional area
A blade axis that has reduced frictional area, one end of it is fixed at the back end center of the blade, and another end of it is inserted into the sliding bearing by using a clip to stop and fix it in the frame body, on the surface of the axis where it contacts the inner diameter surface of the sliding bearing is cut and processed with several dented slots to facilitate the insertion of the contact part of the axis to the sliding bearing to reduce frictional area, furthermore, the slot possesses a function of storing the lubricating oil, it creates a lubrication effect in the inner diameter surface of the sliding bearing, and the final goals of temperature reduction, noise reduction and life time enhancement can thus be achieved.
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1. Field of the Invention
This invention relates to an improvement on a blade axis, it more specifically relates to a blade axis which can be inserted into the sliding bearing and can reduce the frictional area.
2. Description of the Related Art
Conventionally, the blade of heat-dissipating fan is assembled onto the frame body for positioning by using components such as a sliding bearing, a bearing sleeve, a gasket and a C shape clip. As shown in
Furthermore, for the manufacturing process of oil-containing bearing, it sinters and alloys the inner diameter surface to form oil-containing bearing, this is not only a tedious process, it also needs stringent technology and a high investment cost on the processing equipment. This is very disadvantageous to enhance the production capability of low cost heat-dissipating fan, in addition, high production cost will in turn affect the sales profit of a heat-dissipating fan and its competitiveness, therefore, further improvement is really necessary.
SUMMARY OF THE INVENTIONThis invention is based on the usage requirement of the sliding bearing of heat-dissipating fan, it improves the disadvantages of the above-mentioned oil-containing bearing, it further provides a blade axis which can be inserted into the sliding bearing to reduce the frictional area for the industry application.
Technically, this invention is to solve the disadvantages of conventional oil-containing bearing which uses a process to sinter and alloy to form the inner diameter surface, this process not only has stringent technical requirement but high equipment investment cost. Therefore, on the blade axis part where it contacts the sliding bearing is further cut to from several dented shape slots, this is to facilitate the insertion of the contact part of the axis to the sliding bearing to reduce frictional area, in the meantime, the slots have the function to store lubrication oils, this will bring a lubrication effect on the inner diameter surface of the sliding bearing, and other effects such as temperature reduction, noise reduction and lifetime enhancement can be achieved too, the effect reached is the same as that achieved by conventional oil-containing sliding bearing, in the mean time, the cut and processed blade axis can have an effect of reducing the frictional area of the contact part and storing the lubrication oil, furthermore, the dented shape slots can be formed and manufactured in one time during the blade axis processing processes, and the process is very simple and low technical requirement therefore, it is very advantageous for the low price heat-dissipating fan, this invention can have effects such as: low manufacturing cost, enhancement of production capability and enhancement of product competitiveness.
BRIEF DESCRIPTION OF THE DRAWINGS
Please refer to
As shown in
Therefore, no matter blade 1 or sliding bearing 2 rotates, the wear between its axis 11 and inner diameter surface 21 of the sliding bearing 2 thus decreases, meanwhile, the lubrication oil stored in slot 111 can generate lubrication effect, the high temperature generates due to friction accompanied with long time operation can effectively reduced, besides, mechanical noise can be reduced and lifetime can be enhanced, the effect it achieved is the same as that achieved by oil-containing sliding bearing.
Moreover, the cut and processed axis 11 of blade 1 for the current invention can be used to reduce the frictional area of the contact part L and to store lubrication oil, this dented type slot 111 can be cut and processed in one time during the processing of axis 11 of blade 1, the processing process is much simpler and lower technical requirement is needed, for the low unit price heat-dissipating fan, the current invention possess the effect of oil-containing bearing, it can also reduce the production cost, enhance production capability and product competitiveness.
Of course, the several dented type cut and processed slots 111 at the contact part L between the axis 11 of the current invention and the inner diameter surface 21 of sliding bearing 2 are not limited to the rectangular dented type slots 111 as shown in
To summarize the above descriptions, we clearly know that the current invention provides a blade axis which can reduce the frictional area, it does achieve the expected practical value and purpose, it also has industry utility value which meets the requirement of being an invention.
Claims
1. A blade axis which can reduce the frictional area, one end of it is fixed to the back center of the blade, and another end of it is inserted into the sliding bearing and stopped and fixed inside the frame body by a clip, the axis has a contact part which contacts the inner diameter surface of sliding bearing cut and processed by several dented type slots to facilitate the reduction of frictional area when the contact part of the axis is inserted into the sliding bearing, meanwhile, the slot possesses the function of storing lubrication oil which in turn generates lubrication effect on the inner diameter surface of the sliding bearing, and the final goals of temperature reduction, noise reduction and lifetime enhancement can thus be achieved.
2. The blade axis which can reduce the frictional area of claim 1 wherein the several slots can be rectangular shape, V shape, semi circle arc shape, screw shape, saw-toothed shape... etc, they can be formed in staggered or continuous extension dented surface type.
Type: Application
Filed: Sep 24, 2004
Publication Date: Mar 16, 2006
Applicant:
Inventors: Chung-Yung Hsu (San-Chung City), Teng-Han Wang (San-Chung City)
Application Number: 10/948,200
International Classification: F04D 29/04 (20060101);