TW201938979A - High-efficiency radiator with combined cooling fins obtained through stamping - Google Patents

Abstract

The invention discloses a high-efficiency radiator of stamping combined cooling fins. The high-efficiency radiator comprises at least a base and a plurality of cooling fins, and a plurality of adjacent grooves are formed in the surface of the base so that the cooling fins can be inserted into the grooves correspondingly; inserting ends of the plurality of cooling fins are reversely bent and extendout to form reverse folding portions, the reverse folding portions are formed by bending after being compressed, the thickness of the reverse folding portions is smaller than the thickness of the inserting ends, and the reverse folding portions and the inserting ends are used for being matched to be implanted in to the grooves of the base; and the reverse folding portions are formed by bending after being compressed, so that the thickness of the reverse folding portions are smaller than the thickness of the inserting ends, the thickness of the parts of the cooling fins placed in the grooves is less than twice the thickness of the cooling fins, so that the distance between every two adjacent cooling fins on the base can be reduced, the cooling fins can be more densely arranged, and the heat dissipation effect of the whole radiator is effectively improved.

Description

High-efficiency heat sink with stamping and fins

The invention relates to the technical field of radiators, in particular to a high-efficiency radiator with stamping and heat dissipation fins.

The combination of the heat sink's fins and the base is known. In addition to the traditional welding and bonding technology, there are also stamping methods that insert the heat sink's fins into the preset grooves of the base or clamping protrusions, and then press The punch is punched, so that the heat sink fins are clamped and combined with the grooves (or clamping protrusions) of the base. For example, the US invention patent No. 5014776 is to make the sidewalls of the grooves on both sides press and deform. Furthermore, the heat dissipation fins can be clamped, so as to achieve the purpose of combining the heat dissipation fins with the base.

The above-mentioned prior patent technology only uses the squeeze deformation on both sides of the groove to achieve the purpose of clamping the root of the heat sink, but the clamping force is concentrated in the deformed positions on both sides of the groove opening, and only has two point-shaped clamps. Therefore, the clamping effect is not good, and it is not easy to ensure stable bonding. Not only may uneven uneven heights of the heat sinks occur, but also the heat sinks are liable to shake or fall off.

At present, there has been a direct folding at the end of the heat sink fin to form a reverse bend, and the stamped punch is used to punch the reverse buckle, so that the heat sink fin is combined with the base, such as the stamping combination disclosed in Chinese Utility Model Patent 201210029888.2 Improved heat sink for fins. However, the formation of the reverse folding portion is directly bent at the end of the heat sink fin, so that the thickness of the part of the heat sink fin inserted into the groove of the base is twice the thickness of the heat sink fin, which severely restricts the base The distance between two adjacent heat dissipation fins prevents the heat dissipation fins from being densely arranged, which directly affects the heat dissipation effect of the entire heat sink. Therefore, it is necessary to improve the current radiator.

In view of this, the present invention addresses the shortcomings of the prior art, and its main object is to provide a high-efficiency heat sink with stamping and heat dissipation fins, which can reduce the distance between two adjacent heat dissipation fins on the base, so that the heat dissipation fins More dense arrangement.

To achieve the above objective, the present invention adopts the following technical solutions:

The utility model relates to a high-efficiency heat sink which is combined with heat dissipation fins by stamping. The heat sink includes at least a base and a plurality of heat dissipation fins. The surface of the base is provided with a plurality of adjacent grooves for correspondingly inserting the heat dissipation fins. The planting end of each heat dissipation fin is reversely bent to extend a refolded portion, which is formed by bending after being thinned. The thickness of the refolded portion is smaller than the thickness of the planted end. The refolded portion and the planted end For matching the groove of the implant base;

With the above-mentioned base and a plurality of heat-dissipating fins, after the heat-releasing fin inserts the reverse-folded part into the groove of the base, a stamping punch is used to align the reverse-folded part for punching. After punching, the reverse-folded portion is pressed down in the groove to increase deformation and is tightly combined in the groove to complete the combination of the heat dissipation fin and the base.

As a preferred solution, the stamping punch has a stamping slope that partially covers the refolded portion and a groove side wall at the same time. The stamping slope simultaneously presses and pushes the groove side wall to cause movement deformation, so that the groove wall pressure after the movement and deformation Stay at the rebend.

As a preferred solution, before bending, one side of the refolded portion sinks relative to the side of the planting end, and the other side of the refolded portion is flush with the other side of the planted end. The other side of the plant end is superimposed.

As a preferred solution, two end surfaces of the main body of the heat-dissipating fin penetrate through to form a receiving groove for pouring cooling liquid.

As a preferred solution, there are a plurality of accommodating grooves arranged in parallel at intervals.

As a preferred solution, the other end surface of the base is provided with more than one inlay groove for fitting into the heat pipe, and the heat pipe has a flat bottom surface and is exposed to the bottom end surface of the base.

As a preferred solution, the heat pipe is bent through a plurality of heat sinks to form a tight-fitting combination.

As a preferred solution, the base is a circular base body, and a plurality of axially adjacent grooves are provided on the peripheral wall surface for correspondingly inserting a plurality of heat dissipation fins.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be known from the foregoing technical solutions:

By forming the folded back portion after being thinned, the thickness of the folded back portion is smaller than the thickness of the planting end, so that the thickness of the portion of the heat sink fin in the groove is less than twice the thickness of the heat sink fin, which is beneficial to The distance between two adjacent heat dissipation fins on the base is reduced, so that the heat dissipation fins can be arranged more densely, and the heat dissipation effect of the entire radiator is effectively improved.

In order to explain the structural features and effects of the present invention more clearly, the present invention is described in detail below with reference to the drawings and specific embodiments.

Please refer to FIG. 1 to FIG. 18, which show a specific structure of a preferred embodiment of the present invention, which includes at least a base 10 and a plurality of heat dissipation fins 20; and among them:

A plurality of adjacent grooves 11 are formed on the surface of the base 10 for inserting corresponding heat dissipation fins 20 respectively.

The planting end 21 of the plurality of radiating fins 20 is reversely bent to extend to form a refolded portion 22. The refolded portion 22 is formed after being thinned, and the thickness of the refolded portion 22 is smaller than that of the planted end 21. The thickness, the reflexed portion 22 and the planting end 21 are provided to match the groove 11 of the implant base 10.

The base 10 and the plurality of heat dissipation fins 20 are used. After the heat dissipation fins 20 are inserted into the grooves 11 of the base 10, a stamping punch 40 is used to align the bends 22, and the punching is performed. The punch 40 covers the reflexed portion 22, and after pressing, the reflexed portion 22 is depressed in the groove 11 to increase deformation and is tightly combined in the groove 11 to complete the combination of the heat dissipation fin 20 and the base 10. In this embodiment, the punching punch 40 has a punching inclined surface 41 which partially covers the refolded portion 22 and a side wall of the groove 11 at the same time, and the punching inclined surface 41 simultaneously presses and pushes the side wall of the groove 11 to cause movement deformation and movement The deformed groove 11 presses the folded-back portion 22.

As shown in FIG. 8 and FIG. 10, before bending, one side of the reflexed portion 22 sinks relative to one side of the planting end 21, and the other side of the reflexed portion 22 is flush with the other side of the planting end 21 and is bent. Then, as shown in FIG. 9 and FIG. 11, the other side of the reflexed portion 22 is overlapped with the other side of the planting end 21. The thickness of the reflexed portion 22 is half of the thickness of the plug end 21, and the width of the groove 11 is slightly It is larger than the thickness of the folded-back portion 22 plus the thickness of the plug end.

As shown in FIG. 5 and FIG. 6, the other end surface of the base 10 is provided with one or more caulking grooves 12 for fitting into the heat pipe 30. The heat pipe 30 has a flat bottom surface 31 and is exposed to the base. 10 bottom end face. And, the heat pipe 30 is bent through the plurality of heat sinks 20 to form a tight fit.

As shown in FIG. 12 to FIG. 14, the base 10 is a circular base body, and a plurality of axially adjacent grooves 11 are provided on the peripheral wall surface for correspondingly inserting a plurality of heat sink fins 20 so that each heat sink 20 can be irradiated in a stable direction and can be planted and combined with the peripheral wall surface of the circular base.

As shown in FIG. 15 to FIG. 18, two end surfaces of the main body 23 of the heat dissipation fin 20 penetrate through to form a receiving groove 201 for filling cooling liquid. The receiving grooves 201 are arranged in parallel at a plurality of intervals to improve heat dissipation efficiency. .

The design focus of the present invention is that the thickness of the folded-back portion is smaller than the thickness of the planting end by forming the folded-back portion after being thinned, so that the thickness of the portion of the heat-dissipating fin inserted into the groove is smaller than the thickness of the heat-dissipating fin. Twice, which is beneficial to reduce the distance between two adjacent heat dissipation fins on the base, so that the heat dissipation fins can be arranged more densely, and the heat dissipation effect of the entire heat sink is effectively improved.

The above are only the preferred embodiments of the present invention, and do not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical essence of the present invention are still It belongs to the scope of the technical solution of the present invention.

10‧‧‧ base

11‧‧‧ trench

12‧‧‧ Recessed

20‧‧‧Heat fins

21‧‧‧ Planting end

22‧‧‧Reflex section

23‧‧‧ main body

201‧‧‧ Receiving trough

30‧‧‧ heat pipe

31‧‧‧ flat bottom surface

40‧‧‧Stamping punch

41‧‧‧Stamped

FIG. 1 is a schematic perspective view of the present invention before pressing and bonding;

FIG. 2 is a front view of the present invention before punching bonding;

FIG. 3 is a front view of the present invention after the stamping is combined;

4 is an enlarged schematic diagram at a position A in FIG. 3;

5 is a combined perspective view of a heat pipe radiator attached to the present invention;

FIG. 6 is a schematic view from another angle of FIG. 5; FIG.

7 is a perspective view before the heat dissipation fins of the present invention are thinned;

FIG. 8 is a perspective view of the heat dissipation fin of the present invention after being thinned;

FIG. 9 is a perspective view of a bent fin of the present invention;

10 is an enlarged schematic view at a position B in FIG. 8;

11 is an enlarged schematic view at a position C in FIG. 9;

FIG. 12 is a schematic perspective view of the base of the present invention before the pressing and bonding of the circular base;

13 is a schematic perspective view of the base of the present invention after punching and combining a circular base;

14 is an enlarged schematic diagram at a position D in FIG. 13;

15 is a perspective perspective view of another radiating fin in the present invention before being bent after being thinned;

16 is an enlarged schematic view at an E position in FIG. 15;

17 is a side view of another heat sink fin in the present invention;

FIG. 18 is an enlarged schematic view at F in FIG. 17.

Claims (8)

The utility model relates to a high-efficiency heat sink which is combined with heat dissipation fins by stamping. The heat sink includes at least a base and a plurality of heat dissipation fins. The surface of the base is provided with a plurality of adjacent grooves for correspondingly inserting the heat dissipation fins. The reason is that the planting end of the plurality of radiating fins is reversely bent to extend a reverse folding part. The reverse folding part is formed after being thinned, and the thickness of the reverse folding part is smaller than the thickness of the planting end. And the planting end for matching the groove of the implantation base; using the above-mentioned base and a plurality of heat dissipation fins, after the heat dissipation fins insert the refolded part into the groove of the base, a punch is used to align the reflexed part Pressing is performed, and the punching punch covers the refolded portion. After the punching, the refolded portion is pressed down in the groove to increase deformation and is tightly combined in the groove to complete the combination of the heat dissipation fin and the base. The high-efficiency heat sink according to the first patent application with a combination of heat sinking fins, characterized in that the stamping punch has a stamping slope that partially covers the refolded portion and a groove side wall, and the stamping slope is stamped simultaneously The side wall of the groove is pushed to cause movement deformation, so that the side wall of the groove after the movement and deformation presses the reflexed portion. As described in item 1 of the scope of the patent application, a high-efficiency heat sink with punching and heat dissipation fins is characterized in that, before bending, one side of the rebend portion sinks relative to the side of the planting end, and the other side of the rebend portion is The other side of the planted end is flush. After bending, the other side of the refolded part overlaps with the other side of the planted end. The high-efficiency heat sink according to the first scope of the patent application, which is punched and combined with heat dissipation fins, is characterized in that: two end surfaces of the main body of the heat dissipation fins penetrate through to form a receiving groove for pouring cooling liquid. As described in item 4 of the scope of the patent application, the high-efficiency heat sink with punching and heat dissipation fins is characterized in that a plurality of receiving grooves are arranged in parallel and spaced apart. The high-efficiency heat sink according to the first patent application scope, which is stamped and combined with heat dissipation fins, is characterized in that: the other end of the base is provided with more than one recessed groove for fitting into the heat pipe and making the heat pipe It has a flat bottom surface and is exposed to the bottom end surface of the base. The high-efficiency heat sink according to item 6 of the scope of the patent application, wherein the heat pipe is bent through a plurality of heat sinks to form a tight-fitting combination. The high-efficiency heat sink according to the first patent application scope, which is punched and combined with heat dissipation fins, is characterized in that: the base is a circular base body, and a plurality of axially adjacent grooves are provided on the peripheral wall surface for corresponding correspondence. Plant a plurality of cooling fins.