Heat exchange – With retainer for removable article – Electrical component
Reexamination Certificate
2000-10-03
2001-10-16
Flanigan, Allen (Department: 3743)
Heat exchange
With retainer for removable article
Electrical component
C165S121000, C361S697000
Reexamination Certificate
active
06302189
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to an engagement structure of a fan, in particular, to an engagement structure capable of facilitating the assembling of the fan with a heat dissipation plate.
2. Description of the Related Art
Conventionally, bolts are usually used to fix a fan onto a heat dissipation plate, as shown in FIG.
1
. Referring to
FIG. 1
, four holes
101
are formed on the fan
100
. When assembling the fan
100
with the heat dissipation plate
200
, four bolts
300
are screwed to the holes or slots (not shown) of the heat dissipation plate
200
through the four holes
101
.
In the assembling method of the above-mentioned structure, since bolts are used, some tool, such as a screwdriver or similar device, is needed to facilitate the assembling. Therefore, the assembling costs are high and the method is not advantageous to a manufacturer. Furthermore, the structure cannot be easily disassembled and the method is not advantageous to the manufacturer and the user.
SUMMARY OF THE INVENTION
It is therefore an object of the invention to provide an engagement structure of both a fan and a heat dissipation plate, which is capable of facilitating both the assembly and disassembly of both the fan and the heat dissipation plate to reduce the assembling costs.
According to one aspect of the invention, an engagement structure of a fan, which is engaged with a heat dissipation plate having a plurality of heat dissipation fins, is disclosed. A plurality of lower engagement portions with inverted-L-shapes is formed on the plurality of heat dissipation fins. A plurality of clearances substantially parallel to the plurality of heat dissipation fins is formed on each of the lower engagement portions. The engagement structure includes a fan frame and a plurality of upper engagement portions with L-shapes. The plurality of upper engagement portions is elastically mounted around the fan frame. Each of the upper engagement portions includes an L-shaped portion. A plurality of ribs is formed on the L-shaped portions. When assembling the engagement structure with the heat dissipation plate, the L-shaped portions are engaged with the lower engagement portions with inverted-L-shapes for mounting them in a vertical direction, while the plurality of ribs being engaged with the plurality of clearances for mounting them in a horizontal direction.
An inclined plane may be formed under each of the L-shaped portions of the upper engagement portions so that the inclined planes
15
contact with the lower engagement portions and then separate in order to engage the L-shaped portions and the lower engagement portions with each other. In addition, each of the upper engagement portions may be made of an elastic material.
REFERENCES:
patent: 5495392 (1996-02-01), Shen
patent: 5943209 (1999-08-01), Liu
patent: 6137680 (2000-10-01), Kodaira et al.
patent: 6179046 (2001-01-01), Hwang et al.
Huang Wen-Shi
Lin Kuo-Cheng
Lin Tsu-liang
Delta Electronics , Inc.
Flanigan Allen
Martine & Penilla LLP
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