CN101513662A - Method for manufacturing radiator with radiating fins and structure thereof - Google Patents

Abstract

A method for manufacturing a heat sink with heat dissipation fins and a structure thereof are provided, wherein the manufacturing method comprises the following steps: providing a substrate which comprises a base part and a plurality of extension arms, wherein a gap is formed between each extension arm and another two adjacent extension arms; providing a plurality of radiating fins, and inserting the radiating fins into the gap between the extending arms corresponding to the substrate, wherein each radiating fin comprises a substrate and two radiating plates, and the two radiating plates of each radiating fin are inserted into the gap between the corresponding extending arm and the other two extending arms adjacent to the extending arm; and bending and pressing each extension arm of the substrate to enable one side wall surface of the two opposite side wall surfaces forming each extension arm to be tightly abutted against one surface of the two opposite surfaces forming each radiating plate. The invention has the effect of avoiding heat conduction loss.

Description

Manufacturing method and structure of heat sink with heat dissipation fins

technical field

The invention relates to a manufacturing method and structure of a radiator with cooling fins, in particular to a manufacturing method and structure of a radiator with cooling fins that welds the cooling fins without using solder.

Background technique

Radiators are used in a wide range of applications. They are generally used on electronic components that generate heat (such as CPU) or lamps (such as halogen, LED lights), etc., to achieve the purpose of assisting heat dissipation. Among them, radiators with cooling fins Most commonly, shown in Fig. 1 is known a kind of radiator, and it passes solder 12 on the top surface 111 of base body 11 and uses the mode of reflow soldering to affix a plurality of heat dissipation fins 13 that are arranged side by side and equidistant. on the top surface 111 of the seat body 11 .

The purpose of the heat dissipation fins 13 is to increase the area of heat dissipation in a large amount, contact the heat source through the bottom surface 112 of the base body 11, and then conduct the heat source rapidly to each surface 131 of each heat dissipation fin 13 after being absorbed by the base body 11, so as to achieve to assist in cooling purposes.

However, since the heat dissipation fins 13 are welded on the top surface 111 of the base body 11 through the solder 12, and the thermal conductivity of the solder 12 is different from that of the base body 11 and the heat dissipation fins 13, when the heat source is conducted to the heat dissipation fins 13, The solder 12 will cause the loss of heat conduction, so that the effect of the heat source being conducted to the heat dissipation fins 13 for heat dissipation is deteriorated. Therefore, how to conceive a heat sink that can effectively dissipate heat from the heat source is an issue that can be improved.

Therefore, the present invention proposes a method for manufacturing a heat sink with heat dissipation fins and its structure, which is reasonably designed and effectively improves and solves the above-mentioned defects.

Contents of the invention

The object of the present invention is to provide a manufacturing method and structure of a heat sink with heat dissipation fins that does not use solder to avoid heat conduction loss and achieve heat dissipation for electronic components.

According to the characteristics of the present invention, a method of manufacturing a heat sink with heat dissipation fins is proposed, the method includes the following steps: providing a substrate, which includes a base and a plurality of extension arms, the base has a top surface, a bottom surface and side walls, The extension arms extend from the side wall of the base at intervals, and there is a gap between each extension arm and the other two adjacent extension arms; a plurality of heat dissipation fins are provided, which are inserted into the corresponding In the gap between the extension arms, each heat dissipation fin includes a base and heat dissipation plates connected to both sides of the base, and the two heat dissipation plates of each heat dissipation fin are inserted into the corresponding extension arm and In the gap between the other two extension arms adjacent to the extension arm, each heat dissipation plate has opposite top and bottom ends; and each extension arm of the substrate is bent and pressed together to form One of the opposite side wall surfaces of each extension arm is closely abutted on one of the opposite two surfaces forming each heat dissipation plate, and the top ends of the two heat dissipation plates of each heat dissipation fin and bottom end portions protruding from the top and bottom surfaces of the substrate, respectively.

Alternatively, in the above steps, two mutually stacked substrates may be provided, wherein each extension arm of one substrate corresponds to each gap of the other substrate; each heat dissipation fin is interposed between the two substrates in the gap between the corresponding extension arms.

According to the characteristics of the present invention, a heat sink structure with heat dissipation fins is also proposed, the structure includes: a substrate, including a base and a plurality of extension arms, the base has a top surface, a bottom surface and side walls, and the extension arms Bending and extending from the side wall of the base at intervals, there is a gap between each extension arm and the other two adjacent extension arms; and a plurality of cooling fins, each of which includes a base and is connected to the base The heat dissipation plates on both sides of the fins, each heat dissipation plate has opposite top and bottom ends, and the two heat dissipation plates of each heat dissipation fin are inserted into the corresponding extension arm and adjacent to the extension arm In the gap between the other two extension arms, and the side wall surface forming the opposite side wall surface of each extension arm is closely abutted on one of the two opposite surfaces forming each heat dissipation plate, each heat dissipation The top end and the bottom end of the two heat dissipation plates of the fin protrude from the top surface and the bottom surface of the substrate respectively.

Alternatively, the above-mentioned substrates can be set as two and stacked on each other, wherein each extension arm of one substrate corresponds to each gap of the other substrate; In the gap between the corresponding extension arm and the other two extension arms adjacent to the extension arm.

The effect of the present invention is that the gap between each extension arm of the substrate is used for inserting the heat dissipation fin, and the heat dissipation plate is tightly fixed by the two side walls of each extension arm, so that the heat dissipation fin can be stably Fixing, compared with the known method of fixing heat dissipation fins by welding, the present invention does not use solder to avoid the loss of heat conduction, and the overall manufacturing steps of the present invention are simple without increasing the difficulty of assembly and manufacture.

Secondly, the top surface or the bottom surface of the substrate, or a top surface or a bottom surface of the two substrates, can be used to touch the electronic components that will generate the heat source. The top surface and the bottom surface of the substrate, in this way, the airflow of the cooling/heat source can be bidirectionally guided into/out of the top surface and the bottom surface of the substrate, so that it is easier to achieve the heat dissipation effect of the electronic components.

In order to further understand the technology, method and effect that the present invention takes to achieve the intended purpose, please refer to the following detailed description and accompanying drawings of the present invention. It is believed that the purpose, characteristics and characteristics of the present invention can be obtained in depth and For specific understanding, the drawings are only for reference and description, and are not intended to limit the present invention.

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of a known radiator.

Fig. 2 is a flowchart of steps of the present invention.

FIG. 3 is a perspective view of the substrate of the present invention.

FIG. 4 is a partial perspective exploded and assembled view of the substrate and heat dissipation fins of the present invention.

FIG. 5 is a three-dimensional assembled view of the substrate and the cooling fins of the present invention.

FIG. 6 is a front view of part A of FIG. 5 .

FIG. 7 is an exploded perspective view of another embodiment of the substrate of the present invention.

FIG. 8 is a three-dimensional exploded schematic view (1) of another embodiment of the substrate and the cooling fins of the present invention.

FIG. 9 is a three-dimensional exploded schematic view (2) of another embodiment of the substrate and the cooling fins of the present invention.

Wherein, the reference signs are explained as follows:

Seat body 11 Top surface 111 Bottom surface 112

Solder 12 Heat Dissipation Fin 13 Surface 131

Substrate 2, 2' Base 21, 21' Top 211, 21 1'

Bottom surface 212, 21 2' side wall 213 extension arm 22, 22'

Side wall surface 221, 221' gap 23, 23' cooling fin 3

Substrate 31 Heat sink plate 32 Top end 321

bottom end 322 surface 323

Detailed ways

Referring to Fig. 2 to Fig. 5, the present invention proposes a radiator manufacturing method and its structure, wherein the manufacturing method includes the following steps:

(1) A substrate 2 is provided, which includes a base 21 and a plurality of extension arms 22, the base 21 has a top surface 211, a bottom surface 212 and a side wall 213, and the extension arms 22 are separated from the side wall 213 of the base 21 at intervals Extended and shaped, there is a gap 23 between each extension arm 22 and the other two adjacent extension arms 22 .

(2) Provide a plurality of cooling fins 3, which are inserted in the gap 23 between the corresponding extension arms 22 of the substrate 2, and each cooling fin 3 includes a substrate 31 and is connected to the substrate 31 heat dissipation plates 32 on both sides.

Wherein, the two heat dissipation plates 32 of each heat dissipation fin 3 are inserted into the gap 23 between the above-mentioned corresponding extension arm 22 and the other two extension arms 22 adjacent to the extension arm, and each heat dissipation Each plate 32 has a top end 321 and a bottom end 322 opposite to each other.

(3) Bending and pressing each extension arm 22 of the substrate 2, so that one side wall surface 221 of the opposite side wall surfaces 221 forming each extension arm 22 closely abuts against the opposite side wall surface 221 forming each heat dissipation plate 32. On one surface 323 (as shown in FIG. 6 ) of the two surfaces 323, and at the same time make the top end 321 and the bottom end 322 of the two heat dissipation plates 32 of each heat dissipation fin 3 protrude from the base 21 of the substrate 2 respectively. The top surface 211 and the bottom surface 212 thus become a heat sink product.

The technical means of bending and pressing in the above-mentioned step (3) is to fold back the free end of each extension arm 22 toward the base 21 (it can be folded up or down, and in the embodiment of the present invention, the upward fold is referred to as Example), so that each extension arm 22 is bent and extended from the side wall 213 of the base 21, and press each extension arm 22 so that the two side walls 221 can be tightly abutted against the corresponding cooling fin On the heat dissipation sheet 32 of the fin 3 , each heat dissipation fin 3 can be directly and firmly fixed on the side edge of the substrate 2 .

Through the above description, the heat sink structure of the present invention includes the above-mentioned substrate 2 and a plurality of heat dissipation fins 3, and each extension arm 22 of the substrate 2 is formed by bending and extending from the side wall 213 of the base 21, and each extension arm There is a gap 23 between 22 and the other two adjacent extension arms 22, and each cooling fin 3 is arranged in the gap 23 of the corresponding extension arm 22 on the substrate 2, and the two extension arms 22 of each One side wall surface 221 of the side wall surfaces 221 is closely abutted on one surface 323 of the two surfaces 323 of each heat dissipation plate 32 , and the top end 321 and the bottom end of the two heat dissipation plates 32 of each heat dissipation fin 3 The portions 322 protrude from the top surface 211 and the bottom surface 212 of the substrate 2, respectively.

Wherein, the base 21 of the above-mentioned base plate 2 can be a circular plate, and each extension arm 22 is arranged around the side wall 213 of the base 21 of the circular plate. Of course, the base 21 can also be a polygonal plate. body (such as a quadrilateral), and the extension arm 22 is formed by extending from each side wall 213 of the base 21; preferably, the base 21 is a circular plate body, so it can be beneficial to The heat dissipation fins 3 are inserted in an automated manner, so as to be able to be mass-produced; further, each heat dissipation fin 3 can be manually inserted on the substrate 2 in sequence, and of course an automated method can also be used. Insertion, so as to achieve the purpose of rapid production. In addition, the substrate 2 and the heat dissipation fins 3 can be made of the same material and have heat dissipation properties, such as copper and aluminum.

Shown in Fig. 7 to Fig. 9 is another embodiment of the present invention, and its main difference with the step of above-mentioned embodiment is:

(1) Two substrates 2, 2' are provided, and the two substrates 2, 2' are stacked on each other, wherein each extension arm 22' of one substrate 2' corresponds to each gap 23 of the other substrate 2, so that the two The extension arms 22, 22' of each base plate 2, 2' alternate up and down.

(2) Each heat dissipation fin 3 is inserted in the gap 23, 23' of the corresponding extension arm 22, 22' between the two substrates 2, 2', and the two heat dissipation plates of each heat dissipation fin 3 32 is inserted into the gap 23, 23' between the corresponding extension arm 22, 22' and the other two extension arms 22, 22' adjacent to the extension arm.

(3) Bending and pressing each extension arm 22, 22' of the two substrates 2, 2' to form one side wall surface 221 of the opposite side wall surfaces 221, 221' of each extension arm 22, 22' , 221 ′ are closely abutting on one surface 323 of the two opposite surfaces 323 forming each heat sink 32 .

Among them, the technical means of bending and pressing in the step (3) of this embodiment, as shown in FIG. The base 21, 21' is reflexed (it can be up or down); or, as shown in Figure 9, the free ends of the extension arms 22, 22' of the two base plates 2, 2' can be turned toward the two bases in opposite directions. 21 , 21 ′ are folded back, that is, after bending, the free end of each extension arm 22 of one of the substrates 2 is opposite to the free end of each extension arm 22 ′ of the other substrate 2 ′.

Therefore, the heat sink structure of this embodiment includes the above-mentioned two mutually stacked substrates 2, 2' and a plurality of cooling fins 3, and the extension arms 22, 22' of each substrate 2, 2' are separated from the base at intervals. The sidewalls 213 , 213 ′ of 21 , 21 ′ are bent and extended, and each extension arm 22 ′ of one substrate 2 ′ corresponds to each gap 23 of the other substrate 2 .

Each heat dissipation fin 3 is arranged in the gap 23, 23' of the corresponding extension arm 22, 22' between the two substrates 2, 2', and the two heat dissipation plates 32 of each heat dissipation fin 3 are is inserted into the gap 23, 23' between the corresponding extension arm 22, 22' and the other two extension arms 22, 22' adjacent to said extension arm, and forms each extension arm 22, 22' One side wall surface 221 , 221 ′ of the two opposite side wall surfaces 221 , 221 ′ is closely abutted on one surface 323 of the two opposite surfaces 323 forming each heat dissipation plate 32 .

In addition, the free ends of the extension arms 22, 22' of the two base plates 2, 2' can extend in the same direction; or, the free ends of the extension arms 22, 22' of the two base plates 2, 2' can extend oppositely to each other. .

Based on the above description, the present invention uses the gap 23, 23' between each extension arm 22, 22' of the substrate 2, 2' for inserting the heat dissipation fin 3, and through each extension arm 22, 22' The two side wall surfaces 221, 221' of the two side walls 221, 221' closely fix the heat dissipation plate 32 so that the heat dissipation fins 3 can be firmly fixed. Compared with the known method of fixing heat dissipation fins by welding, the method of the present invention without using solder can The loss of heat conduction is avoided, and the overall manufacturing steps of the present invention are simple, which will not increase the difficulty of assembly and manufacturing; meanwhile, it does not use solder and has an environmental protection function (usually solder contains lead; lead-free solder has the problem of raising costs) .

Secondly, the top surface 211 or the bottom surface 212 of the substrate 2, or a top surface 211' or a bottom surface 212 of the two substrates 2, 2' can be used to touch electronic components that generate heat (such as LED lamps, etc.), The top end 321 and the bottom end 322 of each cooling plate 32 protrude from the top surface 211, 211' and the bottom surface 212, 212' of the substrate 2, 2' respectively, so that the air flow of the cooling/heat source can be bidirectionally conducted. The direction of flow into/out of the top surface 211, 211' and the bottom surface 212, 212' of the substrate 2, 2' makes it easier to achieve the effect of heat dissipation of the electronic components.

The drawings and descriptions disclosed above are only embodiments of the present invention, and those skilled in the art can make other various modifications according to the above descriptions, and these modifications still belong to the inventive concept of the present invention and the appended claims within the bounds of the book.

Claims (9)

1. A method for manufacturing a radiator with cooling fins, comprising the following steps: A substrate is provided, which includes a base and a plurality of extension arms, the base has a top surface, a bottom surface and side walls, the extension arms extend from the side walls of the base at intervals, each extension arm is adjacent to the extension arm There is a gap between the other two extension arms of the Provide a plurality of heat dissipation fins, and insert the heat dissipation fins into the gaps between the corresponding extension arms of the substrate, each heat dissipation fin includes a base and heat dissipation plates connected to both sides of the base , the two heat dissipation plates of each heat dissipation fin are inserted into the gap between the corresponding extension arm and the other two extension arms adjacent to the extension arm, each heat dissipation plate has an opposite top end and the bottom end; and bending and pressing each extension arm of the substrate so that one of the opposite side wall surfaces forming each extension arm closely abuts on one of the opposite two surfaces forming each heat dissipation plate, and The top end and the bottom end of the two heat dissipation plates of each heat dissipation fin protrude from the top surface and the bottom surface of the substrate respectively. 2. The manufacturing method of a heat sink with cooling fins as claimed in claim 1, wherein the free end of each extension arm is folded toward the base. 3. A radiator structure with cooling fins, characterized in that it comprises: A substrate, which includes a base and a plurality of extension arms, the base has a top surface, a bottom surface and side walls, the extension arms extend from the side walls of the base at intervals, each extension arm and the extension arm there is a gap between the other two adjacent extension arms; and A plurality of heat dissipation fins, each of which includes a base and heat dissipation plates connected to both sides of the base, each heat dissipation plate has a relative top end and a bottom end, and each heat dissipation The two heat dissipation plates of the fin are inserted into the gap between the corresponding extension arm and the other two extension arms adjacent to the extension arm, and form one side of the opposite side wall surfaces of each extension arm. The wall closely abuts on one of the two opposite surfaces forming each heat dissipation plate, and the top and bottom ends of the two heat dissipation plates of each heat dissipation fin respectively protrude from the top and bottom of the substrate. 4. A method for manufacturing a radiator with cooling fins, comprising the following steps: Two substrates are provided, and the two substrates are stacked on each other, each substrate includes a base and a plurality of extension arms, the base has a top surface, a bottom surface and side walls, and the extension arms extend from the side walls at intervals, each There is a gap between one extension arm and the other two extension arms adjacent to the extension arm, wherein each extension arm of one said substrate corresponds to each gap of the other said substrate; Provide a plurality of heat dissipation fins, insert the heat dissipation fins into the gap between the corresponding extension arms between the two substrates, each heat dissipation fin includes a substrate and is connected to both sides of the substrate two heat dissipation plates of each heat dissipation fin are inserted into the gap between the extension arm and the other two extension arms adjacent to the extension arm, and each heat dissipation plate has an opposite the top end and the bottom end; and bending and pressing each extension arm of the two substrates so that one of the opposite two side wall surfaces forming each extension arm closely abuts against one of the two opposite surfaces forming each heat dissipation plate and the top and bottom ends of the two heat dissipation plates of each heat dissipation fin protrude from the top and bottom surfaces of the two substrates respectively. 5. The manufacturing method of a heat sink with heat dissipation fins according to claim 4, characterized in that, the free ends of the extension arms of the two base plates are folded back toward the two bases in the same direction. 6. The manufacturing method of a heat sink with heat dissipation fins according to claim 4, characterized in that, the free ends of the extension arms of the two base plates are folded back toward the two bases in opposite directions. 7. A radiator structure with cooling fins, characterized in that it comprises: Two substrates, the substrates are stacked on each other, each substrate includes a base and a plurality of extension arms, the base has a top surface, a bottom surface and side walls, the extension arms are bent and extended from the side walls at intervals, each extension there is a gap between an arm and the other two extension arms adjacent to the extension arm, wherein each extension arm of one said base plate corresponds to each gap of the other said base plate; and A plurality of heat dissipation fins, each of which includes a base and heat dissipation plates connected to both sides of the base, each heat dissipation plate has a relative top end and a bottom end, each heat dissipation fin The two heat dissipation plates are inserted into the gap between the corresponding extension arms of the two base boards and the other two extension arms adjacent to the extension arms, and form the opposite side wall surfaces of each extension arm One side wall of each heat dissipation fin closely abuts on one of the two opposite surfaces forming each heat dissipation plate, and the top and bottom ends of the two heat dissipation plates of each heat dissipation fin protrude from the two substrates respectively top and bottom surfaces. 8. The heat sink structure with heat dissipation fins according to claim 7, wherein the free ends of the extension arms of the two base plates extend in the same direction. 9. The heat sink structure with heat dissipation fins according to claim 7, wherein the free ends of the extension arms of the two base plates extend oppositely to each other.

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