Heat sink and method for manufacturing the same

Abstract

One embodiment of the present invention provides a heat sink in which heat dissipation fins can be simply and firmly coupled to a base, and a method for manufacturing the same. Herein, the heat sink includes a main body and heat dissipation fins. The main body can absorb heat and release it to the outside. Additionally, the heat dissipation fins can be coupled to the main body in a pair and release heat from the main body to the outside. The main body may have a pair of coupling grooves formed spaced apart from each other on one surface of the main body so that the heat dissipation fins are each inserted therein, and a pressing part formed between the pair of coupling grooves, which, when pressed by an external force, deforms in shape and moves inward toward the pair of coupling grooves to press the pair of heat dissipation fins and fix them in the coupling grooves.

Description

Technology Field

[0001] The present invention relates to a heat sink and a method for manufacturing the same, and more specifically, to a heat sink in which heat dissipation fins can be simply and firmly coupled to a base plate and a method for manufacturing the same. Background Technology

[0002] With the advancement of industry, electrical and electronic devices used in various ways are undergoing remarkable performance improvements, such as the configuration of highly integrated circuits, in order to be installed and used within limited spaces. Furthermore, since the electronic components constituting these highly integrated circuits convert excess energy remaining after electrical energy use into heat, generating a significant amount of heat, this heat generation can degrade device performance or cause malfunctions. Consequently, improving the performance of heat sinks, which dissipate heat to the outside, is becoming an increasingly significant issue.

[0003] Typically, a heat sink consists of a base plate that receives heat by coming into direct contact with the heat source to be cooled, and a number of heat dissipation fins that dissipate the heat transferred from the base plate by coming into contact with the outside air.

[0004] While these heat sinks are being developed in a wide variety of materials and designs depending on their intended use, common developments involve increasing the surface area of ​​the heat dissipation fins to ensure effective heat dissipation and enabling a perfect, airtight seal with no gaps between the base plate and the fins.

[0005] Therefore, conventional heat sinks are most commonly constructed as a single unit comprising a base plate and multiple heat dissipation fins using a standard extrusion device.

[0006] However, since the heat sink produced in this manner involves casting the base plate and heat dissipation fins as a single unit, only one product can be produced using a single mold. Furthermore, due to the characteristics of the extrusion process, it is necessary to form the height of the heat dissipation fins higher than a certain level to increase their surface area; however, this leads to increased manufacturing costs and a higher defect rate, making practical production difficult. Prior art literature

[0007] Korean Registered Patent Publication No. 1780624 (Published September 21, 2017) The problem to be solved

[0008] In order to solve the above-mentioned problems, the technical objective of the present invention is to provide a heat sink in which heat dissipation fins can be simply and firmly coupled to a base, and a method for manufacturing the same.

[0009] The technical problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0010] To achieve the above technical objective, one embodiment of the present invention provides a heat sink comprising: a main body portion that absorbs heat and releases it to the outside; and heat dissipation fins that are coupled to the main body portion in a pair and release heat from the main body portion to the outside, wherein the main body portion comprises a pair of coupling grooves formed spaced apart from each other on one surface of the main body portion so that the heat dissipation fins are each inserted therein, and a pressure portion formed between the pair of coupling grooves that, when pressed by an external force, deforms in shape and moves inward toward the pair of coupling grooves to press the pair of heat dissipation fins and fix them in the coupling grooves.

[0011] In an embodiment of the present invention, each of the coupling grooves has an expansion groove formed by being recessed in the main body in a direction away from the pressing part, and the portion of the heat dissipation fin pressed by the pressing part can be firmly fixed by being inserted into the expansion groove with a deformed shape.

[0012] In an embodiment of the present invention, the pressurizing member may have a spacer formed between a pair of coupling grooves and forming a body, and a pressurizing projection formed protruding from both sides of the spacer, which moves in the direction of the expansion groove and pressurizes and inserts a part of the heat dissipation fin into the expansion groove when the shape is deformed so that the spacer is pressed by an external force and spreads out in a first direction, which is the width direction of the spacer.

[0013] In an embodiment of the present invention, the pressurizing member may have a hollow formed extending in a second direction perpendicular to the first direction and the horizontal plane within the spacer, which induces the spacer to deform while spreading stably in the first direction when the spacer is pressed by an external force.

[0014] In an embodiment of the present invention, the hollow is formed to have a cross-section in the shape of an elongated hole extending in a third direction, which is the height direction of the spacer, and when the shape of the spacer is deformed by being pressed by an external force, the hollow can be deformed to have a cross-section in the shape of an elongated hole extending in the first direction.

[0015] In an embodiment of the present invention, the upper portion of the spacer is formed round and protrudes beyond one surface of the main body, and when the spacer is pressed by an external force and its shape is deformed and a part of the heat dissipation fin is pressed into the expansion groove and fixed, the upper portion of the spacer can be deformed into a flat shape.

[0016] In an embodiment of the present invention, the main body has a first strength, and the heat dissipation fin may have a second strength smaller than the first strength.

[0017] Meanwhile, to achieve the above technical objective, one embodiment of the present invention provides a method for manufacturing a heat sink, comprising: a heat dissipation fin insertion step of inserting a heat dissipation fin into each of a pair of coupling grooves; and a heat dissipation fin fixing step of pressing a pressurizing part with a press to deform the shape of the pressurizing part so that it spreads out in a first direction, which is the width direction of the pressurizing part, and the part of the pair of heat dissipation fins that is pressed by the pressurizing part is deformed in shape and inserted into the coupling groove to be fixed. Effects of the invention

[0018] According to an embodiment of the present invention, coupling grooves are formed on both sides of a pressurizing part, and while a heat dissipation fin is inserted into the coupling groove, the pressurizing part is pressed so that the shape of the pressurizing part is deformed and pressed, thereby causing the pressing protrusions on both sides of the pressurizing part to press the heat dissipation fin, so that the heat dissipation fin can be firmly fixed so that it does not come out of the coupling groove. Since this process can be automatically implemented through the process of pressing the pressurizing part, the operation can be simple.

[0019] In addition, according to an embodiment of the present invention, a pressure projection that moves in the direction of the expansion groove can press and insert a part of the heat dissipation fin into the expansion groove. Then, this part is sandwiched between the pressure projection and the expansion groove and becomes bent, and due to this bending deformation, the heat dissipation fin is not released from the coupling groove and can be firmly fixed.

[0020] In addition, according to an embodiment of the present invention, since various sizes and shapes of heat dissipation fins can be applied to a single main body, various types of heat sinks can be freely configured with a single main body.

[0021] In addition, according to an embodiment of the present invention, the thickness of the heat dissipation fins can be minimized, thereby increasing heat dissipation efficiency and reducing the overall weight of the heat sink, thereby making it lighter.

[0022] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention. Brief explanation of the drawing

[0023] FIG. 1 is a cross-sectional example diagram showing a heat sink according to an embodiment of the present invention. FIG. 2 is a cross-sectional example diagram showing the main body portion in a state before heat dissipation fins are coupled in a heat sink according to an embodiment of the present invention. FIG. 3 is an example cross-sectional view showing an enlarged view of the main body part in FIG. 2. FIG. 4 is a cross-sectional example diagram showing the state in which a heat dissipation fin is inserted into the coupling groove of the main body part in FIG. 3. Figure 5 is a cross-sectional example diagram showing the state in which the heat dissipation fin is pressed and fixed in the coupling groove by pressing the pressure part in Figure 4. FIG. 6 is a flowchart illustrating a method for manufacturing a heat sink according to an embodiment of the present invention. Specific details for implementing the invention

[0024] The present invention will be described below with reference to the attached drawings. However, the present invention may be implemented in various different forms and is therefore not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification have been given similar reference numerals.

[0025] Throughout the specification, when it is stated that a part is “connected (connected, in contact, combined)” with another part, this includes not only cases where they are “directly connected” but also cases where they are “indirectly connected” with other members interposed between them. Furthermore, when it is stated that a part “includes” a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but rather allows for the inclusion of additional components.

[0026] The terms used herein are merely for describing specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to indicate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0027] Embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0028] FIG. 1 is a cross-sectional exemplary diagram showing a heat sink according to an embodiment of the present invention, FIG. 2 is a cross-sectional exemplary diagram showing a main body portion before heat dissipation fins are coupled to a heat sink according to an embodiment of the present invention, and FIG. 3 is a cross-sectional exemplary diagram showing an enlarged view of a key part of the main body portion in FIG. 2.

[0029] As seen in FIGS. 1 to 3, the heat sink may include a main body (100) and heat dissipation fins (200).

[0030] The main body (100) can be in contact with a heating element (10) to absorb heat from the heating element (10) and release it to the outside. The main body (100) may be a plate-shaped heat sink. Also, the heating element (10) may be an electrical or electronic device, LED lighting, etc. that requires heat dissipation.

[0031] Additionally, the heat dissipation fins (200) are coupled to the main body (100) and can dissipate heat from the main body (100) to the outside. Two heat dissipation fins (200) can be coupled to form a pair, and multiple heat dissipation fins (200) forming a pair in this manner can be arranged on the main body (100) at regular intervals.

[0032] The main body (100) and the heat dissipation fin (200) may be formed of the same metal. For example, they may be formed of aluminum. However, the main body (100) and the heat dissipation fin (200) do not necessarily have to be formed of the same metal and may be formed of different metals. For example, the main body (100) may be formed of aluminum, and the heat dissipation fin (200) may be formed of copper, silver, etc.

[0033] Also, the main body (100) and the heat dissipation fin (200) may have different strengths, and this will be described later.

[0034] In detail, the main body (100) may have a coupling groove (110) and a pressing part (120).

[0035] A pair of coupling grooves (110) may be formed on one side (101) of the main body (100) so that a pair of heat dissipation fins (200) are inserted into each of them. Here, the one side (101) of the main body (100) may be a heat dissipation surface where heat is dissipated, and the other side (102) of the main body (100) may be a heat absorption surface that contacts the heating element (10) and absorbs heat from the heating element (10). In this way, the pair of coupling grooves (110) may be formed spaced apart from each other.

[0036] Additionally, the pressure member (120) can be formed between a pair of coupling grooves (110), and heat dissipation fins (200) arranged on both sides relative to the pressure member (120) can be pressed and fixed to the coupling grooves (110).

[0037] To this end, the pressurizing part (120) may have a spacer (121).

[0038] A spacer (121) may be provided between a pair of coupling grooves (110) and may form the body of a pressure member (120). The spacer (121) may be a part formed between a pair of coupling grooves (110) in the main body (100). The spacer (121) may be integral with the main body (100), and the two sides (122) in the width direction of the spacer (121) may simultaneously become the inner sides of a pair of coupling grooves (110). For convenience of explanation, the width direction of the spacer (121) is referred to as the first direction (A1) below.

[0039] The spacer (121) can be deformed so that it spreads out in the first direction (A1) when the upper portion (125) is pressed vertically by an external force, and can be moved into the inner side of the coupling groove (110). The method of pressing the upper portion (125) of the spacer (121) is not limited to a specific method, and various pressing methods, such as applying pressure with a press device, can be applied.

[0040] And, the pressurizing part (120) may have a hollow (124).

[0041] The hollow (124) can be formed extending in a first direction (A1) and a second direction (A2) perpendicular to the horizontal plane within the spacer (121). The coupling groove (110) can also be formed extending along the second direction (A2), and accordingly, the hollow (124) and the coupling groove (110) can be formed parallel to each other along the second direction (A2).

[0042] And, in the initial state before the spacer (121) is pressed by an external force, the hollow (124) may be formed to have an elongated cross-section extending in the third direction (A3), which is the height direction of the spacer (121). In the initial state, the center (1241) of the hollow (124) may be positioned higher than the center of the first width (B1) of the pressure projection (123) by a certain distance (D).

[0043] Then, when the spacer (121) is pressed by an external force and its shape is deformed to spread out in the first direction (A1), the hollow (124) can be deformed to have a cross-section in the shape of an elongated hole extended in the first direction (A1).

[0044] Through this, the hollow (124) can reduce the thickness of the spacer (121) in the first direction (A1) so that when an external force is applied to the spacer (121), the spacer (121) is pressed and the shape of the spacer (121) can be deformed in such a way that both sides of the spacer (121) spread out easily and stably in the first direction (A1).

[0045] Additionally, the pressure portion (120) may have a pressure projection (123). The pressure projection (123) may be formed on both sides (122) of the spacer (121).

[0046] Additionally, the coupling groove (110) may have an expansion groove (112). The expansion groove (112) may be formed on the outer inner surface (111) of the coupling groove (110). The expansion groove (112) may be formed by being recessed in the main body (100) in a direction away from the pressing part (120). When the spacer (121) is pressed by an external force, the pressing projection (123) may move in the direction of the expansion groove (112).

[0047] The expansion groove (112) can be formed upward from a first height (H1) based on the bottom surface (113) of the coupling groove (110). Additionally, the pressure projection (123) can be formed upward from a second height (H2) which is higher than the first height (H1) based on the bottom part of the spacer (121), i.e., the bottom surface (113) of the coupling groove (110).

[0048] Additionally, the expansion groove (112) can be formed up to a third height (H3) higher than the second height (H2) based on the bottom surface (113) of the coupling groove (110). Furthermore, the pressure projection (123) can be formed up to a fourth height (H4) higher than the third height (H3) based on the bottom surface (113) of the coupling groove (110).

[0049] And, the pressure projection (123) can be formed with a first width (B1), and the expansion groove (112) can be formed with a second width (B2) that is larger than the first width (B1).

[0050] That is, based on the bottom surface (113) of the coupling groove (110), the expansion groove (112) is formed with a width greater than that of the pressure projection (123), but the lower portion may be formed lower than the lower portion of the pressure projection (123).

[0051] FIG. 4 is a cross-sectional example showing the state in which a heat dissipation fin is inserted into the coupling groove of the main body part in FIG. 3, and FIG. 5 is a cross-sectional example showing the state in which the heat dissipation fin is pressed and fixed in the coupling groove by pressing the pressure part in FIG. 4.

[0052] As seen in FIG. 3, and further including FIG. 4 and FIG. 5, the heat dissipation fin (200) can be inserted into the coupling groove (110). The heat dissipation fin (200) can be inserted until its lower end contacts the bottom surface (113) of the coupling groove (110).

[0053] The outer inner surface (111) of the coupling groove (110) and the pressure projection (123) can be formed such that the gap between them corresponds to the width of the heat dissipation fin (200). Accordingly, the heat dissipation fin (200) inserted into the coupling groove (110) can be pressed by the outer inner surface (111) of the coupling groove (110) and the pressure projection (123), and can be fixed without shaking (see FIG. 4).

[0054] Meanwhile, the main body (100) may have a first strength, and the heat dissipation fin (200) may have a second strength that is smaller than the first strength. For example, if both the main body (100) and the heat dissipation fin (200) are formed of aluminum, the main body (100) may be high-strength aluminum, and the heat dissipation fin (200) may be ductile aluminum. Also, if the main body (100) and the heat dissipation fin (200) are formed of different metals, the main body (100) may be formed of aluminum, and the heat dissipation fin (200) may be formed of copper, silver, etc., which have less strength than aluminum.

[0055] Accordingly, when the upper part of the spacer (121) is pressed by an external force (P) as in FIG. 5 while in a state as in FIG. 4, the spacer (121) is deformed to be pressed, and as the hollow (124) is deformed, the two sides (122) move to both sides along the first direction (A1). Accordingly, since the height of the deformed spacer (121) is lowered, the pressure projection (123) can naturally move toward the expansion groove (112).

[0056] And, the pressure projection (123) moving toward the expansion groove (112) can press and insert a part (210) of the heat dissipation fin (200) into the expansion groove (112). Since the heat dissipation fin (200) has less rigidity than the spacer (121), the part of the heat dissipation fin (200) that is pressed by the pressure projection (123) can be easily deformed and inserted into the expansion groove (112). Then, this part is sandwiched between the pressure projection (123) and the expansion groove (112) and becomes bent, and due to this bending deformation, the heat dissipation fin (200) is not removed from the coupling groove (110) and can be firmly fixed.

[0057] When a portion (210) of the heat dissipation fin (200) is inserted into the expansion groove (112) and fixed, due to the height relationship described above, the central part of the first width (B1) of the pressure projection (123) can be brought as close as possible to the central part of the second width (B2) of the expansion groove (112), thereby allowing the heat dissipation fin (200) to be effectively pressed into the expansion groove (112) and preventing the heat dissipation fin (200) from being separated.

[0058] Furthermore, even if the thickness of the heat dissipation fin (200) is minimized, the pressure projection (123) can press the heat dissipation fin (200) into the expansion groove (112) and fix it due to the deformation of the pressure portion (120). Through this, the heat dissipation efficiency of the heat sink can be increased, and the overall weight of the heat sink can be reduced to make it lighter.

[0059] Meanwhile, the spacer (121) may be formed at a height such that the upper portion (125) protrudes above one side (101) of the main body (100). That is, the upper portion (125) of the spacer (121) may be formed at a fifth height (H5) relative to one side (101) of the main body (100).

[0060] Also, the upper portion (125) of the spacer (121) can be formed into a round shape (see FIG. 4).

[0061] And, when the spacer (121) is pressed by an external force and its shape is deformed, and a part (210) of the heat dissipation fin (200) is pressed by the pressure projection (123) and inserted into the expansion groove (112) and fixed, the upper part (125) of the spacer (121) can be deformed into a flat shape (see FIG. 5).

[0062] As shown in FIG. 4, the upper part of the spacer (121) is spaced apart from the heat dissipation fin (200) and cannot press the heat dissipation fin (200), but as shown in FIG. 5, the upper part of the spacer (121), which is pressed and deformed into a flat shape, is in close contact with the heat dissipation fin (200) and presses the heat dissipation fin (200), thereby helping to firmly fix the heat dissipation fin (200).

[0063] Meanwhile, the size and shape of the portion of the heat dissipation fin (200) that is not inserted into the coupling groove (110) and is exposed to the outside can be varied. Therefore, various types of heat sinks can be freely configured using a single main body (100). That is, various heat sinks can be configured by using the main body (100) as a platform for heat sinks.

[0064] The following describes the manufacturing method of a heat sink.

[0065] FIG. 6 is a flowchart illustrating a method for manufacturing a heat sink according to an embodiment of the present invention.

[0066] As shown in FIGS. 1 to 6, the method for manufacturing a heat sink may include a heat dissipation fin insertion step (S310) and a heat dissipation fin fixing step (S320).

[0067] The heat dissipation fin insertion step (S310) may be a step of inserting a heat dissipation fin (200) into each of a pair of coupling grooves (110).

[0068] In the heat dissipation fin insertion step (S310), the heat dissipation fin (200) inserted into the coupling groove (110) can be fixed by having one side in close contact with the pressure projection (123) and the other side in close contact with the outer inner surface (111) of the coupling groove (110).

[0069] And, the heat dissipation fin fixing step (S320) may be a step in which the pressure part (120) is pressed by an external force so that the shape of the pressure part (120) is deformed so that it spreads out in the first direction (A1) and protrudes, and the part of the pair of heat dissipation fins (200) that is pressed by the pressure part (120) is deformed and inserted into the coupling groove (110) to be fixed.

[0070] In the heat dissipation fin fixing step (S320), the lower part of the heat dissipation fin (200) is pressed by the pressure projection (123) and inserted into the expansion groove (112), becoming bent, and can be firmly fixed so as not to come out of the coupling groove (110).

[0071] Meanwhile, although not described in the method for manufacturing a heat sink explained with reference to FIG. 6, the above description regarding the heat sink through FIG. 1 to 5 can be equally applied to the method for manufacturing a heat sink.

[0072] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will understand that other specific forms can be easily modified without altering the technical spirit or essential features of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single unit may be implemented in a distributed manner, and components described as distributed may likewise be implemented in a combined form.

[0073] The scope of the present invention is defined by the claims set forth below, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts thereof should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0074] 100: Main body 110: Connecting groove 112: Expansion groove 120: Pressure part 121: Spacer 123: Pressure projection 124: Hollow 200: Heat dissipation fins

Claims

Claim 1 A main body that absorbs heat and releases it to the outside; The device includes a heat dissipation fin that is coupled to the main body in a pair and releases heat from the main body to the outside. The main body has a pair of coupling grooves formed spaced apart from each other on one surface of the main body so that the heat dissipation fins are each inserted therein, and a pressure part formed between the pair of coupling grooves, which, when pressed by an external force, changes its shape and moves inward toward the pair of coupling grooves to press the pair of heat dissipation fins and fix them in the coupling grooves. Each of the coupling grooves has an expansion groove formed by being recessed in the main body in a direction away from the pressure part. The portion of the heat dissipation fin pressed by the pressure part changes its shape and is inserted into the expansion groove, thereby being firmly fixed. The pressure part is provided between the pair of coupling grooves and forms a body, and is formed protrudingly on both sides of the spacer. When the spacer is pressed by an external force and changes its shape to spread in a first direction, which is the width direction of the spacer, it moves toward the expansion groove and a portion of the heat dissipation fin is inserted into the expansion groove. A heat sink characterized by having a pressure projection that is inserted by applying pressure. Claim 2 delete Claim 3 delete Claim 4 A main body that absorbs heat and releases it to the outside; The device includes a heat dissipation fin that is coupled to the main body in a pair and releases heat from the main body to the outside. The main body has a pair of coupling grooves formed spaced apart from each other on one surface of the main body so that the heat dissipation fins are each inserted therein, and a pressure part formed between the pair of coupling grooves, which, when pressed by an external force, deforms in shape and moves inward toward the pair of coupling grooves to press the pair of heat dissipation fins and fix them in the coupling grooves. Each of the coupling grooves has an expansion groove formed by being recessed in the main body in a direction away from the pressure part. The portion of the heat dissipation fin pressed by the pressure part is deformed in shape and inserted into the expansion groove, thereby being firmly fixed. The pressure part is provided between the pair of coupling grooves and includes a spacer forming a body, and a second direction extending perpendicular to the first direction (the width direction of the spacer) and perpendicular to the horizontal plane within the spacer, which induces the spacer to deform and spread stably in the first direction when the spacer is pressed by an external force. A heat sink characterized by having a hollow structure. Claim 5 A heat sink according to claim 4, wherein the hollow is formed to have an elongated cross-section extending in a third direction, which is the height direction of the spacer, and when the spacer is pressed by an external force and its shape is deformed, the hollow is deformed to have an elongated cross-section extending in the first direction. Claim 6 A heat sink according to claim 1 or 4, wherein the upper portion of the spacer is formed round and protrudes above one surface of the main body, and when the spacer is pressed by an external force and its shape is deformed and a part of the heat dissipation fin is pressed into the expansion groove and fixed, the upper portion of the spacer is deformed flat. Claim 7 A heat sink according to claim 1 or 4, characterized in that the main body has a first strength and the heat dissipation fin has a second strength smaller than the first strength. Claim 8 A heat dissipation fin insertion step of inserting a heat dissipation fin that releases heat from the main body to the outside into a pair of coupling grooves formed spaced apart from each other on one surface of the main body that absorbs heat and releases it to the outside; A method for manufacturing a heat sink, comprising a heat dissipation fin fixing step in which a pressure portion formed between a pair of coupling grooves is pressed by a press to deform the shape of the pressure portion and move inward toward the pair of coupling grooves, thereby pressing and fixing a pair of heat dissipation fins to the coupling grooves, wherein each coupling groove has an expansion groove formed by being recessed in the main body in a direction away from the pressure portion, and the portion of the heat dissipation fin pressed by the pressure portion is firmly fixed by being inserted into the expansion groove after its shape is deformed, and the pressure portion has a spacer formed between the pair of coupling grooves and forming a body, and a pressure projection formed protruding from both sides of the spacer, wherein in the heat dissipation fin fixing step, when the spacer is pressed by an external force and its shape is deformed to spread out in a first direction which is the width direction of the spacer, the pressure projection moves toward the expansion groove and presses and inserts a part of the heat dissipation fin into the expansion groove. Claim 9 A heat dissipation fin insertion step of inserting a heat dissipation fin that releases heat from the main body to the outside into a pair of coupling grooves formed spaced apart from each other on one surface of the main body that absorbs heat and releases it to the outside; A method for manufacturing a heat sink, comprising a heat dissipation fin fixing step in which a pressure portion formed between a pair of coupling grooves is pressed by a press to deform the shape of the pressure portion and move inward toward the pair of coupling grooves, thereby pressing a pair of heat dissipation fins and fixing them to the coupling grooves, wherein each of the coupling grooves has an expansion groove formed by being recessed in the main body in a direction away from the pressure portion, and the portion of the heat dissipation fin pressed by the pressure portion is firmly fixed by being inserted into the expansion groove after its shape is deformed, and the pressure portion has a spacer provided between the pair of coupling grooves and forming a body, and a hollow formed inside the spacer extending in a first direction which is the width direction of the spacer and a second direction perpendicular to the horizontal plane, wherein in the heat dissipation fin fixing step, when the spacer is pressed by an external force, the hollow induces the spacer to deform while spreading stably in the first direction.

Images