TW526700B - Heat sink and its manufacturing method - Google Patents

Abstract

The present invention provides a heat sink that includes a plurality of assembling units. Each assembling unit has a thin fin and a thicker jointing base. The jointing base of one of the assembling units is tightly contacted with the jointing base of another adjacent assembling unit. Therefore, the fins of each assembling unit are spaced with each other and arranged in parallel. The manufacturing method comprises utilizing a punching process to continuously punch and form a plurality of connected assembling units on a metal material belt; cutting and separating the assembling units on the metal material belt; and finally taking a number of assembling units as required to align every two jointing bases of the assembling units and then applying pressure to assemble them, so that the assembling unit are jointed and fixed with each other thereby forming a complete heat sink.

Description

526700 A7

10 15 20 [Field of the Invention] The present invention relates to a heat sink and a heat sink produced by producing a single assembly unit by continuous stamping. Assembled in the shape of [Background of the Invention] 2.4.1: 2: 2 Ming: It is known that the radiators produced by the ㈣-type method are used ... two bases 21 and a plurality of sides connected to the side of the base 21, etc. :: by The bottom surface of the base 21 contacts, for example, a central processing unit chip to transfer heat to each of the 'reading sheets 21', and then it can be exchanged with air, and then replaced, thereby achieving the purpose of reducing the temperature of the heating element 3. The operating clock of the IT core processor chip is getting higher and higher, and the heat is even more impressive. In order to maintain the heat dissipation of these heating elements 3, the heat dissipation performance of the heat sink 2 must be improved. , And the most direct way is to increase the area of the single sequel 22 and increase the density of the whole binding piece 22 under the same base size, so as to increase the contact area with the air, and improve the heat dissipation efficiency of the radiator 2 . For the structure of the political heater 2 in the figure, if you want to increase the area of a single fin 22, you must increase the length of each fin 22 upwards, and if you want to increase the overall fin 22 on the base 21 of the same size The density must be such that the lateral thickness of each fin 22 is reduced and the spacing between adjacent fins 22 is reduced to accommodate a greater number of fins 22 'however' in the aluminum extrusion process, it is limited: The cavity of the extrusion die limits the length to thickness ratio (or "slenderness ratio") of m. There is a certain limit, usually it must be less than 5, so that the shape of the fins 22 can be smoothly formed when the aluminum material is extruded. Without

笫 400 Hundred Binding Line 526700 A7 Product --B7 —… __ V. Description of the Invention (2) There is a phenomenon that the material has insufficient fluidity to form a cavity. Furthermore, in order to make the cavity in the extrusion mold have a certain strength, The distance between the adjacent fins 22 should not be too close, so as to avoid that the thickness of the meat between the corresponding cavity and the cavity in the extrusion mold to produce the fins is too thin to resist the high pressure caused by the material flow. Deformation. Based on the above, due to the limitation of the aluminum extrusion process, there is a limit to the heat dissipation efficiency under the same working size of the base 2. In this way, to obtain better heat dissipation performance, only a larger size heat dissipation can be used. Device 2 is all the way, but given the consideration of limited installation space and material cost, this method of increasing the size 10 is not ideal. As shown in the second figure, it is a radiator 4 produced by a planer process. The method is to first produce an initial embryo 41 with a plurality of parallel grooves (not shown) on the surface by extrusion, and then use a special The cutting tool 5 cuts out layers of slightly curved fins 42 obliquely at the grooves. The advantage of the heat sink 4 produced by this process 15 is that there is no restriction of the aforementioned aluminum extrusion mold, and the thickness of the stub 42 can be quite thin, and the distance between the binding piece 42 and the fin 42 is also reduced ^ to reduce the overall fin The density of 42 can be increased. However, with regard to the radiator 4 produced by planer-type processing, the processing difficulty is relatively difficult, and the precision requirements of the equipment are also high. As a result, the general production yield and yield rate of 20 need to be improved. In addition, due to the use of oblique direction The fins 42 are planed, so after the fins 42 located at the outermost edge are planed, the material of the primary embryo 41 that is still outside the fins 42 must be further processed and removed, so each radiator A pile of waste material has to be considered in terms of cost. [Summary of the invention] The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210χ 297 public love) Iridium G 100526700 V. Description of the invention 2 The purpose of the present invention is to provide a type of reading which can effectively improve heat dissipation Political heat: heat sink with integrated and overall heat dissipation fin density and manufacturing method thereof. dd 于 疋 'The heat sink of the present invention includes a plurality of assembling units, each assembling = having a sheet-like binding piece and-a connecting seat connected to the book piece and having a thickness slightly larger than the thickness of the fin, and the connecting seat is formed There is a first surface and a second surface opposite to the first surface, so that the first surface is provided with a first fitting portion, and the second surface is provided with a second surface that can be engaged with the first fitting portion. The fitting part is fixedly engaged with each other by the first fitting part and the second fitting part, so that the first face of the joint seat of one of the assembly units and the second face of the joint seat of the other adjacent assembly unit The “close contact” further arranges the fins of each assembly unit at a distance from each other. Q The manufacturing method is to first prepare a stamping die that can punch the assembly unit, and use the stamping mold to continuously The metal material 'produces a plurality of connection orders S that are connected to each other, so that each connection unit has a structure of 15 fins, a joint seat, and a first coupling part and a second fitting part on the joint seat. Cut and separate the connected assembly units on the metal strip to form a separate assembly. Finally, take a certain number of assembly units as required so that each group connects the first fitting part of the joint seat of the early π. The second joint part of the joint seat of the adjacent assembly unit is mated with each other. Then apply 20 'pressure to the joint seat of these assembly units to make the assembly units join and fix each other. [Simplified description of the drawings] For other technical contents, features and advantages of the present invention, please refer to the following drawings with reference to the drawings. In the detailed description of the preferred embodiment, it will be clear that Brother Long 'in the drawings ...

526700 A7

The first picture is a schematic diagram of the conventional view; the outside of the side of the radiator that is known to be produced by aluminum extrusion is the second diagram of the side appearance of another conventional square planer; the heat dissipation produced by the formula is the third A perspective view of a preferred embodiment of the heat sink of the invention. The fourth figure is a side view of an assembling unit of the preferred embodiment. The fifth figure is a related sectional view of the preferred embodiment, illustrating a first embedded The joint part and the state; the state before the joining of the two mating parts of the two adjacent joint units before the joining. 10 The sixth figure is a sectional view of the preferred embodiment, illustrating a first fitting part and a State; the state of the second mating part after joining the two adjacent unit joint units; the seventh figure is a perspective view of another preferred embodiment of the heat sink of the present invention, illustrating the fins on each unit unit; There are a plurality of perforations; and FIG. 8 is a cross-sectional view of a side part of the assembly unit of FIG. 7, illustrating the type of the perforations formed by puncturing. [Detailed description of the invention] Referring to the second and fourth figures, a preferred embodiment of the heat sink of the present invention includes a plurality of assembling units 1. Each of the assembling units 1 has a thin sheet-like fin 11 and a joint holder 12 connected to one side of the base sheet 11 and having a larger thickness, wherein two opposite sides of the joint holder 12 each have a first Surface 121 and a second surface I], the first surface 121 is provided with a first fitting portion 13, and the second surface 122 is provided with a second fitting portion 14 that can be engaged with the first fitting portion 13. In this example, the first paper size applies the Chinese National Standard (CNS) li ^ (21〇χ 297 public love) 526700 A7 B7 V. Description of the invention (J) A fitting portion 13 includes a plurality of first protrusions 131 and a plurality of first recessed holes 1 32, and the second fitting portion 14 includes a plurality of second recessed holes 141 corresponding to the first protruding posts 1 3 1 and a plurality of correspondingly recessed first recesses. The second protruding post 142 of the recessed hole 132. The shapes of the first fitting portion 13 and the second fitting portion 14 are not fixed. Those skilled in the art can easily consider and change the design, so it is not limited to those shown in the figure. 10 15 20 The first fitting portion 13 and the second fitting portion 14 can be fitted and fixed to each other, so that the first surface 121 of the joint seat 12 of one of the assembling units 1 is adjacent to the other. The second surface 122 of the joint seat 12 of the assembling unit 1 is in close contact. After the assembling of the plurality of assembling units 1 is completed, the fins 11 of each assembling unit 1 may be spaced apart from each other and arranged in parallel. In application, the joint a 12 of each group A 1 can be formed in the same way as the base 2 part of the conventional radiator to contact the heating element, and then the heat i of the heating element is transmitted to the sheet 11 through the joint seat 12 and Air exchanges heat. According to the structure of the above-mentioned heat sink, its manufacturing method can first prepare a stamping die for punching a set of it !, and use the stamping die to punch continuously on the _ metal strip A plurality of assembling units 1 connected to each other is made, so that each assembling unit i φ ^ u, after a long or multiple stamping, becomes U u, the joint seat 12, and the joint seat 12 and the second surface 122 respectively. The assembling unit of the first-fitting cymbal and the second planting machine and the second structure machine is connected to each other. The assembling unit i is a separate assembling unit using a cutting tool or other cutting method. ^ 7 knife away to form a single

526700 V. Description of the invention (... the most needed: according to the installation space to be applied, the number of fins required for heat dissipation, etc. 2: the number of two assembling units, including the combination part 13 of the assembling unit 1 and the adjacent unit The other group is called the 5-seat joint portion 14 butt joints with each other, and then the joint unit 1 is connected to the W — pressing pressure, so that the adjacent group mouth a fitting portion 13 and the second fitting portion 14 The dove is fixed by using a = to connect to each other to form a complete radiator. 15 20 people %% As shown in the fifth and sixth figures, in order to further strengthen the first insert. The part 13 and the second fitting part 14 are embedded. For the positioning effect, taking the combination of the first convex pillar 131 10 and the first concave hole 141 as an example, when the first convex 131 is stamped and formed, the height of the eight dogs on the first surface 121 is greater than that of the second concave hole 141. Into the second surface, and the end of the first protruding post 131 is further formed with a ring-shaped surrounding wall 1311, when the joint seat 12 of the adjacent assembly unit 丨 is pressed against each other, the first face 121 of the two joint seat 12 is pressed It closely fits with the second surface 122 of the other joint seat 12 and fits the Japanese guard. The first convex column 1 3 1 will be squeezed into the second concave hole 141, and because of the height of the first convex column 131 The depth is greater than the depth of the second recessed hole 141, so that the annular surrounding wall 311, which is not known by the first protruding post 131, expands outwardly under pressure, and then pushes the inner wall surface of the second recessed hole 141 close to the bottom. Deformed, causing the deformed annular surrounding wall 1311 to be embedded in the inner wall surface of the second recessed hole 141 'Similarly, the first recessed hole 132 and the second protruding post 142 can also be joined in the same way, thereby making adjacent The joint seat 12 of the assembly unit 1 is more difficult to separate and is firmly joined. As shown in the seventh and eighth figures, when the assembly unit 1 is press-formed, a plurality of perforations 111 can be formed at the same time in the fins 11 The perforation i 丨 丨 can be adapted to the Chinese national standard (CNS) A4 size (210x 297 mm) 526700 according to the paper size. 5. Description of the invention (corpse). The two opposite sides of the fin 11 face the other one when it is scattered.形成. Λ buds are formed in different ways, the purpose of which is to apply perforation U1 to create a turbulent effect when used in government applications. The old film 11 can be used to improve the efficiency of heat exchange. The production method is not to make a piece of 11 thickness It can be thin, and the length can be increased, which means that the fin n is thinner: It is larger than the aluminum extrusion process, so that a single bond, long 槎 makes the heat dissipation area of the early fin 11 therefore = and hunting by the joint seat The control of 12 thickness can also effectively increase the overall fin's resistance. The heat dissipation efficiency can be greatly improved, and because the simple stamping process is continuously formed on the metal strip, making it in addition to the rapid production of 10, The amount of waste generated is also very small, so the cost of production is greatly reduced. However, the above are only the preferred embodiments of the present invention. When the scope of the implementation of the present invention cannot be limited in this way, that is, where anyone applies for a patent in accordance with the present invention The scope and simple equivalent changes and modifications made in the content of the invention description should still fall within the scope of the invention patent. This paper size applies to Chinese National Standard (CNS) A4 (210x 297 mm) Page 10 526700 A7 B7 V. Description of the invention (Xi) [Comparison of component numbers] 1 Assembly unit 141 Second recessed hole 11 Fin 142 No. Two convex pillars 111 Perforation 2 Radiator 12 Joint seat 2 1 Base 121 First surface 22 Wrong piece 122 Second surface 3 Heating element 13 First fitting portion 4 Radiator 13 1 First convex column 41 Preform 1 3 11 Ring Surrounding wall 42 Book piece 132 First recessed hole 5 Tool 14 Second fitting portion

Order

Thread This paper is sized for China National Standard (CNS) A4 (210x 297 mm) Page 11

Claims (1)

526700 ι · Living shape: Pirate ’includes a plurality of assembly units, each of which is ^ / fin-shaped · fins and one connected to the fins and is thicker than the fins Γ —Large joint seat, and the joint seat is formed with a first surface and a second surface opposite to the first surface of Γ, so that the first surface is provided with the first surface: There is provided an assembly unit that can be engaged with the first fitting part: the coupling part 'by the first fitting part and the second fitting part to be engaged with each other to fix and make the assembly unit. The first face of the joint seat of the joint seat is another-: eye neighbor: the second face of the joint seat of the assembly unit is in close contact, and the fins of each joint unit are spaced apart from each other and arranged in parallel. 2. The heat sink according to item (i) of the scope of patent application, wherein the first fitting 7 includes a plurality of first protruding posts and a plurality of first recessed holes, and the second fitting portion includes a plurality of A first recessed hole corresponding to the first protruding post and a plurality of second recessed holes correspondingly embedded in the first recessed hole. 3. The heat dissipation H according to item 1 of the scope of the patent application, wherein the fins of the assembly unit are further provided with a plurality of perforations. 4. A method for manufacturing a heat sink as described in item i of the patent application scope, including the following steps: (1) preparing a stamping die capable of punching the assembly unit, and continuously using the stamping die by the stamping process ^ Several assembly units connected to each other are punched out on a metal strip, so that each assembly unit forms the fin, the joint seat, and the first fitting portion and the first joint portion on the joint seat. The structure of the two fitting parts; (2) Cut and separate the connected assembly units on the metal strip to form a separate assembly unit; This paper size applies to the Chinese National Standard (CNS) A4 specification (210 × 297 mm) (B)) • Page 12 ABCD 526700 VI. Patent application scope (3) Take a certain number of assembling units as needed to make each of the assembling units. The first fitting part of the joint seat and the adjacent assembling unit The second fitting parts of the joint seat are mated with each other, and then pressure is applied to the joint seats of the assembly units, so that the assembly units are mutually fixed. ❿ This paper size applies to China National Standard (CNS) A4 (210x 297 mm) • page 13