Surrounding type fin-retaining structure of heat radiator

Details Surrounding type fin-retaining structure of heat radiator Surrounding type fin-retaining structure of heat radiator

2001-08-16

2002-05-14

Flanigan, Allen (Department: 3743)

Heat exchange

With retainer for removable article

Electrical component

C165S185000, C361S704000, C174S016300

Reexamination Certificate

active

06386275

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a surrounding type fin-retaining structure of heat radiator and, more particularly, to a retaining structure, wherein grooves on frills of fins are tightly joined together to form a surrounding and closed shape, and a retaining tool matching the shape of the grooves is embedded in the grooves to fix the fins of a heat radiator.
BACKGROUND OF THE INVENTION
Heat radiators play an important role in heat-emitting electronic parts. As electronic parts have more and more powerful functions, their volume of generated heat becomes greater and greater. Without heat radiators to radiate out large quantities of heat to the outside, heat-emitting electronic parts will easily be damaged due to high temperature. Heat radiator types can be divided into aluminum-extrusion type, die-casting type, and folding type. A folding type heat radiator comprises a plurality of fins to form a larger heat-radiating area so that large quantity of heat can be taken away. Because aluminum-extrusion type and die-casting type heat radiators have limitations resulting from processing, folding type heat radiators are more commonly used nowadays.
As shown in
FIGS. 1 and 2
, fins
10
a
of a prior art folding type heat radiator are formed by punching a plurality of metal sheets
11
a
. Each of the metal sheets
11
a
comprises a rectangular main body
111
a
with two frills
112
a
joined at two sides thereof. The two frills
112
a
are parallel to each other, and are perpendicular to the main body
112
a
. Each of the two frills
112
a
has two slots
113
a
. Each of the slots
113
a
is connected with a retaining board
114
a
matching the slot
113
a
. A hook groove
115
a
is formed on each of the retaining boards
114
a
by means of pressing. When the fins
10
a
of a heat radiator are to be assembled together, the retaining board
114
a
needs to be placed into a slot
113
′
a
at a corresponding position of another metal sheet
11
′
a
, as shown in FIG.
2
. Next, the hook groove
115
a
on the retaining board
114
a
is used to retain the slot
113
′
a
of the metal sheet
11
′
a
. In this way, the fins
10
a
of a heat radiator can be assembled together.
However, in addition that the slots
113
a
need to be formed by punching the metal sheets
11
a
, it is necessary to provide the retaining boards
114
a
, and it is also necessary to form the hook groove
115
a
on each of the retaining boards
114
a
by means of pressing, resulting in much difficult manufacture and assembly. Moreover, it takes much time and money.
Accordingly, the above fins of heat radiator have inconvenience and drawbacks in practical use. The present invention aims to resolve the problems in the prior art.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide a surrounding type fin-retaining structure of heat radiator, wherein grooves on frills of fins are retained with a retaining tool to easily fix the fins of a heat radiator. Moreover, the shape of the heat radiator is not limited, and many manufacturing and assembling steps can be saved.
To achieve the above object, the present invention provides a surrounding type fin-retaining structure of heat radiator comprising a retaining tool and a plurality of fins. The retaining tool is integrally formed. The fins are formed by punching metal sheets. Each of the metal sheets comprises a main body connected with two frills. Each of the frills has a groove with gaps at a predetermined position thereof. When the fins are tightly arranged together, the grooves on the frills will be tightly joined together to form a surrounding and closed shape. The retaining tool is manufactured to have the same size and shape as those of the grooves. The retaining tool is then placed into the grooves and retained therein to fix the fins of a heat radiator.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:


REFERENCES:
patent: 1339385 (1920-05-01), Guyer
patent: 2429508 (1947-10-01), Belaieff
patent: 2653800 (1953-09-01), Anton
patent: 2792200 (1957-05-01), Huggins et al.
patent: 3305013 (1967-02-01), Freidel
patent: 5132780 (1992-07-01), Higgins, III
patent: 5561338 (1996-10-01), Roberts et al.
patent: 5583746 (1996-12-01), Wang

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