Fan motor
Inactive Publication Date: 2013-10-10
SAMSUNG ELECTRO MECHANICS JAPAN ADVANCED TECHNOLOGY CO LTD
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The present invention introduces a fan motor with enhanced performance. The fan motor includes a static body and a rotating body with a hub and blade, both of which rotate relative to the static body. A sleeve retains a portion of the rotating body and is joined with the base, while a rotating flange encircling the hub is joined with the rotating body. The fan motor also includes static flanges that face the rotating flange in both the axial direction and the radial direction. Additionally, dynamic pressure generating grooves are provided on either the static body or the rotating body to optimize the air flow and reduce friction. Finally, a lubricant is present between the static body and the rotating body to further improve the performance of the fan motor.
Problems solved by technology
Such fan motors promote heat dissipation inside the electronic device, thereby contributing the downsizing and speedup of such a device.
In general, when the rotating body and the static body contact with each other, those parts may be damaged in the worst case.
Alternatively, when the rotating body repeats contacting the static body, in general, the fan motor breaks down within a relatively short duration of use, and thus the lifetime thereof becomes short.
When the rotating body contacts the static body while the blade is rotating, the contacting portions are worn out, and may be damaged in the worst case, resulting in the reduction of the lifetime of the fan motor.
Such slide noises are unpleasant to the user of the electronic device.
Such a technical issue arises in the case of fan motors built in other various electronic devices in addition to the fan motors built in portable electronic devices.
Method used
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embodiment
[0034]FIG. 1A is a top view showing a fan motor 100 according to an embodiment.
[0035]FIG. 1B is a side view showing the fan motor 100 of the embodiment.
[0036]The fan motor 100 includes a static body 2 and a rotating body 4.
[0037]The static body 2 includes a base 6 and an outer periphery wall 16.
[0038]The rotating body 4 includes a shaft 8, a hub 10, and a blade unit 12.
[0039]The shaft 8 has a first end 8A that is shown in FIG. 1A at a side toward a reader and a second end 8B opposite to the first end 8A.
[0040]The explanation below will be given based on a definition that the first end 8A of the shaft 8 is an upper side with respect to the second end 8B thereof.
[0041]However, the posture of the fan motor of the present invention when in use is not limited to this definition.
[0042]The fan motor of the present invention can be used in any arbitrary posture.
[0043]The blade unit 12 includes a blade base 18 and, for example, 10 blades 14. The number of blades can be changed as needed depe...
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A fan motor includes a static body, a rotating body that has a shaft, a hub encircling a first end of the shaft and joined with the first end, and a blade joined around an outer periphery of the hub, a sleeve that retains thereinside a portion of the shaft at a second end side, a rotating flange which encircles the sleeve and which rotates together with the hub, a static flange which is disposed in an area at a side of the first end of the shaft, and which is joined with the static body so as to overlap the rotating flange in a radial direction, a dynamic pressure generating groove provided in either one of surfaces of the static body and the rotating body facing with each other in the axial direction, and a lubricant present between the static body and the rotating body.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a fan motor including a rotating fan blade.[0003]2. Description of the Related Art[0004]Fan motors that rotate a fan blade are built in electronic devices like a personal computer.[0005]Such fan motors promote heat dissipation inside the electronic device, thereby contributing the downsizing and speedup of such a device.[0006]Fan motors are nowadays often built in especially portable electronic devices like a laptop computer.[0007]In comparison with the fan motors built in stationary electronic devices like a desktop computer, it is necessary for the fan motors built in the portable electronic devices like a laptop computer to have a shock resistance and a vibration resistance in order to withstand a shock like falling and a vibration at the time of carrying and to have the extended lifetime.[0008]For example, JP 2007-205491 A discloses a fan motor including a blade fixed to a rotating b...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F04D25/06
CPCF04D25/0613F04D29/646F04D29/329
InventorKODAMA, MITSUONONAKA, TAKETONISHIO, AKIRA
OwnerSAMSUNG ELECTRO MECHANICS JAPAN ADVANCED TECHNOLOGY CO LTD