Retaining structure of heat-radiating fins

Details Retaining structure of heat-radiating fins Retaining structure of heat-radiating fins

2001-08-16

2002-06-11

Bennett, Henry (Department: 3743)

Heat exchange

Heat transmitter

C165S080300, C165S078000, C174S016300, C257S722000, C257S718000, C361S704000

Reexamination Certificate

active

06401810

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a retaining structure of heat-radiating fins and, more particularly, to a structure using retaining parts to assemble heat-radiating fins.
BACKGROUND OF THE INVENTION
As shown in
FIG. 1
, a heat-radiating part composed of a plurality of heat-radiating fins is formed by stacking a plurality of sheet type heat-radiating fins
1
. Extension portions
11
are disposed at an upper end edge and a lower end edge of each of the radiating fins
1
. The extension portion
11
is used to form the required length of a gap
15
between every two fins
1
. The extension portion
11
is also used to form the joining portion between every two adjacent fins
1
. Speaking more clearly, at least a prolongation end portion
12
slightly longer than the gap
15
is disposed on the extension portion
11
, and the prolongation portion
12
is then embedded into an indentation
14
disposed at the extension portion
11
of an adjacent fin
1
. The length of the indentation
14
is equal to that of the prolongation end portion
12
, but is slightly smaller than that of the gap
15
.
Tight retaining state is formed between two sides of the prolongation end portion
12
and two inner sides of the indentation
14
. A projecting point
13
projects out from the prolongation end portion
12
. The projecting point
13
is embedded into the indentation
14
. Corresponding fastening state is formed between the prolongation end portions
12
of the extension portions
11
at two sides. A heat-radiating part is thus formed. Because the extensions
11
are formed by bending the fins I ninety degrees, if the bent angle is not exact, the assembly will not be smooth, or the retaining will not be tight, hence letting the fins be easily disjointed. Moreover, the fins will easily collapse to separate from one another due to unexpected touch in use. Also, more and larger material is required for the formation of the fin
1
, and the part not required outside the prolongation end portion
12
is then removed by means of punching. Therefore, higher cost is wasted in manufacture and control.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide a retaining structure of heat-radiating fins, wherein retaining tools are used to achieve the effect of fixing a whole set of fins, thereby reducing removed part of the fins by punching and decreasing material and manufacturing cost. Additionally, when the retaining tools are joined with grooves of the fins in the present invention, smoothness of arrangement can be maintained at the periphery of two sides of the fins so that unevenness will not occur.
To achieve the above object, a plurality of sheet type heat-radiating fins are stacked to form a heat-radiating part. Each of the heat-radiating fins has an upper bent portion and a lower bent portion. A gap is formed between the bent portions. The bent portions can also be used as the joining portions between every two adjacent fins. Through holes are disposed on each of the fins of the heat-radiating part. The same number of retaining tools as that of the through holes are provided. Hook ends are bent near two ends of each of the retaining tools. The two hook ends of the retaining tools are retained in the through holes of corresponding fins to let the retaining tools straddle the bent portions of the fins. Grooves are respectively disposed at the upper and lower bent portions so that a body portion of the retaining tool can be embedded therein. The hook ends of the retaining tools can also be bent to be V shaped.


REFERENCES:
patent: 2434676 (1948-01-01), Spender
patent: 5038858 (1991-08-01), Jordan et al.
patent: 5509465 (1996-04-01), Yaw Huey Lai
patent: 5558155 (1996-09-01), Eiji Ito
patent: 6266245 (2001-07-01), Wen-Chen-Wei
patent: 6269003 (2001-07-01), Wen-Chen-Wei
patent: 6324061 (2001-11-01), Kinoshita et al.
patent: 6336498 (2002-01-01), Wen-Chen-Wei

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