TWM254888U - Heat sink with stacked fins - Google Patents

Description

V. Creation Description (i) [Technical Field of New Type] This creation is about a heat sink, especially a heat sink for heat-dissipating electronic components. [Previous technology] With the continuous development of the electronic information industry, the operating frequency and speed of electronic components (especially central processing units) are constantly increasing. The heat it generates also increases, and the temperature keeps increasing, which seriously affects the operating performance and stability of electronic components. To ensure that electronic components can operate at normal operating temperatures, a heat sink is usually installed on the surface of the electronic components to discharge heat. . The most widely used aluminum extruded radiators are the final structural form after a series of processing procedures such as aluminum extrusion, cutting, trenching, hair removal, cleaning, sanding, polishing, and anodizing. Not only does this type of radiator produce more waste during the trenching process, but due to the limitations of the mold strength and related technologies, the ratio of the fin height to the groove width between adjacent fins is at most about 1 3: 1 When extrusion molding exceeds this limit, it is prone to fracture, uneven thickness and deformation. It cannot greatly increase the heat dissipation area of the heat sink, and its heat dissipation performance is gradually unable to meet the heat dissipation requirements of today's CPUs.

As shown in the first figure, it is another more commonly used heat sink. The manufacturing process is significantly different from an aluminum extrusion heat sink. The heat sink is formed by continuous bending of a metal sheet. The heat sink 1 is attached to the fixed seat 2. Combined. The heat sink can overcome the problems of extruding the consumables of the aluminum heat sink and not being able to greatly increase the heat dissipation area, but since the heat sink 1 is formed by continuous bending of the metal sheet, it has a plurality of heat transfer surfaces that are attached to the fixed seat 2. 3. A certain distance is formed between the three heat transfer surfaces, and there is no heat dissipation on the surface of the fixed seat 2 corresponding to the distance.

Page 7 M254888_ V. Creation instructions (2) The sheet 1 is attached, and the area where the heat sink 1 contacts the fixed base 2 is only half of the area of the upper surface of the fixed base 2, which greatly reduces the amount of heat transferred in a certain period of time, which seriously affects Thermal efficiency. [Content] The purpose of this creation is to provide a stacked fin heat sink with a stable structure and good heat dissipation. The creative stacked fin-type heat sink includes a base and a plurality of fins stacked on each other and snapped on the base. Each fin has a body, and the two sides of the body are respectively bent and extended to form a first The hemming edge, the front edges of the two first hemming edges are oppositely extended to form a second hemming edge, and the second hemming edge extends in an appropriate position to form a 1- ^ buckle portion. A buckle portion f has a vacant portion formed on the fin body, and the buckle portions of the adjacent fins can pass through the vacant portion and deform under external force to lock with the fin body. The first fold is combined to form a plane, and the plane is in close contact with the surface of the base. Compared with the previous technology, this creation has the following advantages: The stacking fin radiator of this creation is made of a plurality of single fins which are buckled and stacked on each other. Its structure is stable and it will not loose or fall off when combined with the base. The overall heat dissipation area can be appropriately increased by increasing the height of the fins and decreasing the fin pitch, and the first folds of the fins form a plane to be combined with the base, and its contact area is increased, which is beneficial to the heat from The conduction from the base to the fins improves the heat dissipation efficiency. [Embodiment] Please refer to the second figure.

Page 8 M9S fiber L _____- V. Creation instructions (3) Sub-components (not shown) are in contact to dissipate heat. The heat sink is composed of a base 10 and a plurality of fins 20 which are mounted on the base 10 and fastened to each other. Each piece of paper 20 has a ^ body 2 2 'The opposite sides of the body 2 2 are respectively vertically bent in the same direction to extend the first fold 24, and the front edges of the two first folds 2 4 continue obliquely and extend toward each other. Form a second fold 26, the front edge of the second fold 26 is protruded forward at a proper position near the two ends to form a buckling portion 2 8 'Because the first fold 26 is the oblique direction of the front edge of the first fold 24 It is formed by bending and extending. There is a certain gap between the buckling portion 28 and the first fold 24. The buckling portion 28 has a bottom plate 282 parallel to the first fold 24 and a first fold parallel to the inner edge of the bottom plate 282. The side 24 is punched and formed with a buckle 2 8 4 corresponding to the fins 2 0 of each buckle portion 2 8 and the body 2 2 is punched with a groove-shaped notch corresponding to the shape of the buckle portion 2δ. 30, the vacant portion 30 can allow the buckle portions 28 of adjacent fins 20 to protrude thereinto, and the buckle portions 28 of the buckle 284 can pass over the body 22 of the fin 20. When the fins 20 are stacked on each other, the buckling portions 28 of each fin 20 extend into the vacant portions 30 of the adjacent fins 20, and the buckling ears 284 of the fins 20 can pass through the body 22 under external force. Moderately bent and deformed so as to be locked with the fins 20 body 22 at the edge of the vacant portion 30, so that the fins 20 are not easily separated from each other. The edges 24 are combined to form a plane that can be closely adhered to the surface of the base 10. -Please refer to the third figure at the same time. This is the second and second example of the stacked fin heat sink of the original creation. The difference from the first embodiment is that the buckling portion 48 is formed in front of the first hem 46. The two ends of the edge are in communication with the vacant portion 50 corresponding to the buckle portion 48 and the side edge of the fin body 40 2.

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Qing also refers to the fourth 2 / apricot t ^ 0 is the second embodiment of the stack fin radiator of this creation. The difference from the second embodiment is that the ears on the inner edge of the snap portion 68 are 6 8 4% • The fold is extended to φ ^ η λ. One of Xin Zhi's younger folds 6 4, and the vacant portion 70 corresponding to the snap portion 68 is L-shaped. Understandably, the two first folds 24, 44, 64 of each of the fins 20, 40, and 60 described above may be formed in opposite directions on the sides of the body 22, 42, 62, respectively. It can also be understood that the second folds 26, 46, and 66 of each of the fins 20, 40, and 60 described above can be of any other shape. It is sufficient that there is a certain gap between the portions 28, 48, 68 and the first hem 24, 44, 64. In summary. The 'this creation complies with the new patent requirements, and a patent application is filed according to law. However, the above is only a preferred embodiment of this creation. For those who are familiar with the skills of this case, the equivalent modifications or changes made according to the spirit of this creation should be covered by the following patent applications.

Page 10 M254888 Simple illustration of the drawing [Simple illustration of the drawing] The first drawing is a perspective view of a radiator in the prior art. The second figure is an exploded perspective view of the first embodiment of the stacked fin heat sink of the present invention. The third figure is an exploded perspective view of the second embodiment of the stacked fin heat sink of the present invention. The fourth figure is an exploded perspective view of the third embodiment of the stacked fin heat sink of the present invention. [Description of component symbols] Base body & second hem bottom plate vacant part 10 22 '42 26, 46 282 30 > 50 62 66 70 Radiating fin first hem snap portion 20 24 28 40 44 48 60 64 68 284, 684

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Claims (1)

M254888_ VI. Scope of patent application 1. A stacked fin-type heat sink, comprising: a base; and, a plurality of fins which are snap-stacked on each other, and the fins are attached to the base, each fin has A body, which is respectively bent and extended on opposite sides of the body to form a first hem, a front edge of the first hem is extended to form a second hem, and a buckle portion is extended at an appropriate position on the second hem. A buckling ear is formed on the side edge of the buckling part, and a vacant part is formed on the fin body of each buckling part. The film body is locked. 2. The stacked fin-type heat sink according to item 1 of the scope of patent application, wherein the first > chin is perpendicular to the fin body. Stomach 3. As claimed, the stacked fin type and heat sink described in item 1 of the patent scope, wherein the two second folds of each fin are formed by being bent oppositely. 4. The stacked fin-type heat sink as described in item 1 of the scope of patent application, wherein the buckle portion has a certain gap with the first fold, and further has a bottom plate 05. As described in item 4 of the scope of patent application The stacked fin-type heat sink, wherein the bottom plate and the lug are parallel to the first folding edge. 6. The stacked fin-type heat sink according to item 4 of the scope of patent application, wherein the bottom plate is parallel to the first fold, and the buckle is perpendicular to the first fold. < 7. The stacked fin-type heat sink according to item 1 of the scope of patent application, wherein the buckle portion is formed near the two ends of the second folded edge. 8. The stacked fin heat sink according to item 7 of the patent application scope, wherein the vacant portion is near the side edge of the fin body. Page 12 M254888_ VI. Scope of patent application 9. The stacked fin heat sink according to item 1 of the scope of patent application, wherein the buckle portions are formed at both ends of the second fold. 10. The stacked fin-type heat sink according to item 9 of the scope of patent application, wherein the vacant portion communicates with a side edge of the fin body. 11. The stacked fin-type heat sink according to item 1 of the scope of patent application, wherein the first folds of the fins form a plane that is in conformity with the base. ▲ Page 13