TWI708039B - High-efficiency radiator with stamping and radiating fins - Google Patents

Abstract

The invention discloses a high-efficiency radiator with stamping and combining heat dissipation fins, which at least includes a base and a plurality of heat dissipation fins. The surface of the base is provided with a plurality of adjacent grooves for respectively correspondingly inserting the heat dissipation fins The planting end of the plurality of heat dissipation fins is reversely bent to extend a reflexed portion, the reflexed portion is formed by bending after being thinned, the thickness of the reflexed portion is less than the thickness of the planting end, the reflexed portion and The planting end is used to match the groove of the implant base; it is formed by bending the reflexed part after being thinned, so that the thickness of the reflexed part is smaller than the thickness of the planting end, so that the part thickness of the heat sink fins in the groove It is less than twice the thickness of the heat dissipation fin, 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.

Description

High-efficiency heat sink with stamping and radiating fins

The invention relates to the field of heat sink technology, in particular to a high-efficiency heat sink that is stamped and combined with heat dissipation fins.

In addition to the traditional welding technology, the heat sink fins of the conventional radiator are combined with the base by stamping. The heat sink fins are first inserted into the preset grooves or clamping bosses of the base, and then stamped The punch is punched, and the heat sink fins are clamped and joined to the groove (or clamping boss) of the base. For example, the US Patent No. 5,014,776, is to cause the side walls of the grooves on both sides to produce pressing and pushing deformation. Furthermore, the heat dissipation fins can be clamped to achieve the purpose of combining the heat dissipation fins and the base.

The above-mentioned prior patent technology only uses the extrusion 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 on the deformation position on both sides of the groove opening, and only has two point-shaped clamps. Therefore, the clamping effect is not good and it is difficult to ensure a stable combination. Not only may the heat sinks have uneven heights, but the heat sinks are prone to shaking or falling off.

At present, the end of the heat dissipation fin is directly bent to form a reflexed part, and the reflexed part is stamped by a punching punch, so that the heat dissipation fin is combined with the base. For example, the stamping combination disclosed in Chinese Utility Model Patent 201210029888.2 Improved radiator with fins. However, the formation of the reversed part is formed by directly bending the end of the heat dissipation fin, so that the thickness of the part of the heat dissipation fin implanted in the groove of the base is twice the thickness of the heat dissipation fin, which seriously 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 main purpose of the present invention is to provide a high-efficiency heat sink that is stamped and combined with heat dissipation fins, which can reduce the distance between two adjacent heat dissipation fins on the base, so that the heat dissipation fins More densely arranged.

In order to achieve the above objectives, the present invention adopts the following technical solutions:

A high-efficiency heat sink with stamped and combined heat dissipation fins, which 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 respectively correspondingly planting the heat dissipation fins; The planting end of each heat dissipation fin is reversely bent to extend a reflexed portion, which is formed by bending after being thinned. The thickness of the reflexed portion is smaller than the thickness of the planting end. The reflexed portion and the planting end Groove for matching implant base;

Using the above-mentioned base and a plurality of heat dissipation fins, after the heat dissipation fins insert the reflexed portion into the groove of the base, a punching punch is used to align the reflexed portion for punching. The punching punch covers the reflexed portion, After punching, the reflexed part is pressed down in the groove to generate deformation and increase, and is tightly combined in the groove to complete the combination of the heat dissipation fin and the base.

As a preferred solution, the punching punch has a punching bevel that partially covers both the reflexed portion and a groove sidewall at the same time, and the punching bevel simultaneously presses and pushes the groove sidewall to generate movement and deformation, so that the moved and deformed groove sidewall is pressed Live in the reflex section.

As a preferred solution, before bending, one side of the reflexed portion is sunk relative to the planting end, and the other surface of the reflexed portion is flush with the other surface of the planting end. After bending, the other side of the reflexed portion is flush with the planting end. The other side of the implant end is superimposed.

As a preferred solution, the two end surfaces of the main body of the radiating fin penetrate through to form a containing groove for infusing the cooling liquid.

As a preferred solution, there are a plurality of accommodating grooves arranged in parallel and spaced apart.

As a preferred solution, the other end surface of the base is provided with more than one embedding groove for fitting and embedding 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 radiating fins to form a tight fitting combination.

As a preferred solution, the base is a circular seat body, and a plurality of axially adjacent grooves are formed on the peripheral wall surface for correspondingly implanting 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 above technical solutions:

The thickness of the reflexed portion is made smaller than the thickness of the planting end by pressing the reflexed part to be thinned, so that the thickness of the part of the heat dissipation fin placed in the groove is less than twice the thickness of the heat dissipation fin, which is beneficial 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 heat sink is effectively improved.

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

Please refer to FIG. 1 to FIG. 18, which show the specific structure of the 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 the heat dissipation fins 20 respectively.

The planting end 21 of the plurality of heat dissipation fins 20 is bent in the opposite direction to extend a reflexed portion 22, which is formed by bending after being thinned, and the thickness of the reflexed portion 22 is smaller than that of the planting end 21 The thickness, the reflexed portion 22 and the planting end 21 are used to match the groove 11 of the implant base 10.

Using the above-mentioned base 10 and a plurality of heat dissipation fins 20, after the heat dissipation fins 20 insert the reflexed portion 22 into the groove 11 of the base 10, a punch 40 is used to align the reflexed portion 22 for punching. The punch 40 covers the reflexed portion 22. After being punched, the reflexed portion 22 is pressed and deformed in the groove 11 to increase the deformation and 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 that partially covers the reflexed portion 22 and a side wall of the groove 11 at the same time, and the punching inclined surface 41 simultaneously punches and pushes the side wall of the groove 11 to generate movement and deformation. The deformed side wall of the groove 11 presses the reversed portion 22.

As shown in Figures 8 and 10, before bending, one side of the reflexed portion 22 is sunk relative to the side of the planting end 21, and the other side of the reflexed portion 22 is flush with the other surface of the planting end 21, bending Then, as shown in Figures 9 and 11, the other side of the reflexed portion 22 overlaps with the other surface of the planting end 21, the thickness of the reflexed portion 22 is half the thickness of the insertion end 21, and the width of the groove 11 is slightly It is greater than the thickness of the reflexed portion 22 plus the thickness of the plug-in end.

As shown in Figures 5 and 6, the other end of the base 10 is provided with more than one embedding groove 12 for fitting and embedding the heat pipe 30 so that the heat pipe 30 has a flat bottom surface 31 and is exposed to the base. The bottom end surface of 10. And, the heat pipe 30 is bent through a plurality of radiating fins 20 to form a tight fitting combination.

As shown in Figures 12 to 14, the base 10 is a circular seat body, and a plurality of axially adjacent grooves 11 are provided on the peripheral wall surface for correspondingly inserting a plurality of heat dissipation fins 20, so that each heat dissipation fin 20 can be radiated in the direction of radiation to be firmly inserted into the peripheral wall surface of the circular seat body.

As shown in FIGS. 15 to 18, the two end surfaces of the main body 23 of the radiating fin 20 penetrate through to form containing grooves 201 for filling the coolant, and the containing grooves 201 are arranged in parallel and spaced apart to improve the heat dissipation efficiency. .

The key point of the design of the present invention is that the thickness of the reflexed portion is formed by bending it after being thinned, so that the thickness of the reflexed portion is smaller than the thickness of the planting end, so that the thickness of the part of the heat dissipation fin placed in the groove is less than the thickness of the heat dissipation fin It 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 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 based on the technical essence of the present invention are still valid. It belongs to the scope of the technical solution of the present invention.

10‧‧‧Base 11‧‧‧Groove 12‧‧‧Inlay slot 20‧‧‧Radiating fins 21‧‧‧planting end 22‧‧‧Reflection 23‧‧‧Subject 201‧‧‧Containing Slot 30‧‧‧Heat pipe 31‧‧‧Flat bottom surface 40‧‧‧Stamping punch 41‧‧‧Stamping bevel

Figure 1 is a perspective view of the present invention before stamping and bonding; Figure 2 is a front view of the present invention before stamping and bonding; Figure 3 is a front view of the present invention after stamping and bonding; Fig. 4 is an enlarged schematic diagram of position A in Fig. 3; Figure 5 is a combined perspective view of the present invention with a heat pipe radiator attached; FIG. 6 is a schematic diagram from another angle of FIG. 5; Figure 7 is a perspective view of the heat dissipation fins of the present invention before being thinned; Figure 8 is a perspective view of the heat dissipation fins of the present invention after being thinned; Figure 9 is a perspective view of the radiating fins of the present invention after bending; Fig. 10 is an enlarged schematic diagram of position B in Fig. 8; Fig. 11 is an enlarged schematic diagram of position C in Fig. 9; Fig. 12 is a perspective view of the present invention, where the base is a circular base body before stamping and joining; FIG. 13 is a perspective schematic view of the present invention after the base is a circular base body after stamping and joining; Fig. 14 is an enlarged schematic diagram of position D in Fig. 13; 15 is a perspective view of another heat dissipation fin of the present invention before being bent after being thinned; Fig. 16 is an enlarged schematic diagram of position E in Fig. 15; Figure 17 is a side view of another type of heat dissipation fins in the present invention; Fig. 18 is an enlarged schematic view of F in Fig. 17.

10‧‧‧Base

11‧‧‧Groove

20‧‧‧Radiating fins

21‧‧‧planting end

22‧‧‧Reflection

40‧‧‧Stamping punch

41‧‧‧Stamping bevel

Claims (8)

A high-efficiency radiator with stamped and combined heat dissipation fins, which 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; It lies in: the planting ends of the plurality of heat dissipation fins are reversely bent to extend a reflexed portion, the reflexed portion is formed by bending after being thinned, and the thickness of the reflexed portion is smaller than the thickness of the planting end, and the reflexed portion And the planting end is used to match the groove of the implant base; using the above-mentioned base and a plurality of heat dissipation fins, after the heat dissipation fins are inserted into the groove of the base, a stamping punch is used to align the reflection part When stamping is performed, the stamping punch covers the reflexed portion, and after stamping, the reflexed portion is pressed down in the groove to generate deformation and increase, and is tightly combined in the groove to complete the combination of the heat dissipation fin and the base. For example, the high-efficiency heat sink with stamping and radiating fins described in the scope of the patent application is characterized in that the stamping punch has a stamping bevel that partially covers the reflexed portion and a groove side wall at the same time, and the stamping bevel is simultaneously stamped The side wall of the groove is pushed to cause movement and deformation, so that the side wall of the groove after the movement and deformation is pressed against the reflexed portion. For example, the high-efficiency heat sink with stamping and radiating fins described in the scope of the patent application is characterized in that: before bending, one side of the reflexed portion is sunk relative to the side of the planting end, and the other side of the reflexed portion is The other side of the planting end is flush, and after bending, the other side of the reflexed part overlaps the other side of the planting end. For example, the high-efficiency heat sink with stamped and combined heat dissipation fins described in the first item of the scope of patent application is characterized in that the two end surfaces of the main body of the heat dissipation fins penetrate through to form accommodating grooves for filling the cooling liquid. As described in item 4 of the scope of patent application, the high-efficiency radiator with stamping and radiating fins is characterized in that: the accommodating grooves are arranged in parallel at intervals. For example, the high-efficiency radiator stamped and combined with radiating fins described in the scope of the patent application is characterized in that: the other end of the base is provided with more than one embedding groove for fitting and embedding the heat pipe, and the heat pipe It has a flat bottom surface and is exposed to the bottom end surface of the base. For example, the high-efficiency radiator with stamping and radiating fins described in item 6 of the scope of patent application is characterized in that the heat pipe is bent and penetrated through a plurality of radiating fins to form a tightly matched combination. For example, the high-efficiency radiator stamped and combined with heat dissipation fins described in the scope of the patent application is characterized in that the base is a circular seat body, and a plurality of axially adjacent grooves are provided on the peripheral wall surface for corresponding Insert multiple cooling fins.

Images