TW418358B - Compound heat sink and its manufacturing method - Google Patents

Abstract

This invention is about the compound heat sink and its manufacturing method, in which the compound heat sink includes a base station and two sets of heat dissipation fin plates installed on the base station. The base station is formed by extruding. The topside of the base station is upwards extended to form the first convex platform located in the center and two of the second convex platforms located individually on two side edges. The set of heat sink fin plate is obtained by compressing and bending thin metal plates into a wavy shape so as to form plural coplanar bottom plates, side plate that extends upwards from both bottom plate sides, and the top plate, which is located between two neighboring side plates and is relatively crossing arranged with respect to the bottom plate.

Description

ί 4 183 5 8 V. Description of the Invention (l) [Field of the Invention] The present invention relates to a composite radiator and a manufacturing method thereof, and more particularly to a composite radiator with good heat dissipation effect and stable overall structure and a manufacturing method thereof. [Background of the Invention] With the rapid development of the information industry and the increasing scope of its applications, the requirements for the processing speed of electronic components in computers have become higher and higher. With the increase of the operating speed, the heat generated by related electronic components has also increased a lot. If this heat is not discharged in time, the stability and quality of use will be greatly affected by the structure of the radiator that is used to assist the electronic components to discharge heat. See U.S. Patent No. 5,304,846. As shown in the first figure, the heat sink 1 includes a base 3 and a plurality of heat-dissipating fins 5 extending upward from the base 3. The electronic components are produced by bonding the bottom surface of the base 3 to relevant electronic components. The heat is discharged in time. Since the radiator 1 is obtained by traditional extrusion (Extruding), it is still difficult to design the heat dissipation effect, such as the density of the cooling fins or the overall cooling surface area, under the constraints of the manufacturing technology level, such as mold strength. Meet the actual use needs. Furthermore, there is also a composite radiator as shown in the second figure. The diffuser 10 is composed of a base 11 and a plurality of heat dissipation fins 15 inserted on the base u. Since the heat sink fins 15 of this type of heat sink 10 are obtained by stamping, they have more design space in terms of heat sink ore density and overall heat sink surface area. However, the heat-dissipating sheet 15 of the similar radiator 10 is directly inserted into the groove 13 of the base 11 in an inserted manner, so the stability of the overall structure is clear.

4183 ο v 4183 5 8 V. Description of the invention (2) Insufficient 'and the gap between the heat dissipation fin 15 and the groove 13 of the base 11 is easy to generate a gap *, which greatly affects the heat dissipation effect of the heat sink 10. The third figure shows another type of heat sink. The heat sink 20 is composed of a base 21 and a plurality of heat dissipation fin groups 23 adhered to the base 21. Since this type of heat sink 20 is simply bonded to the heat sink fin group 23 and the base 21 with thermally conductive adhesive, it is obviously insufficient in the stability of the overall structure, and because the thermally conductive element is in a high temperature environment for a long time, it is extremely Easily aging and cause viscosity loss or loss of viscosity. Therefore * how to provide a heat sink with good heat dissipation effect and solid overall structure is a top priority. [Objective of the Invention] The object of the present invention is to provide a composite heat sink with good heat dissipation effect and a manufacturing method thereof. Another object of the present invention is to provide a composite heat sink with a stable overall structure and a manufacturing method thereof. [Inventive Features] The composite radiator of the present invention and a manufacturing method thereof, wherein the composite radiator includes a base and two radiating fin groups mounted on the base. The base is formed by extrusion. The top surface of the base is extended with a first boss at the center and two second bosses at the edges of the two sides. The heat dissipation fin group is formed by pressing and bending a metal sheet into a wave shape to form a plurality of coplanar negative plates, side plates extending upwardly from both sides of the negative plate, and a staggered arrangement between the adjacent two negative plates and the negative plate. Top film. [Schematic description]

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V. Description of the invention (3) The first picture is a perspective view of a conventional radiator. The second picture is a perspective view of another conventional radiator. Three-dimensional view. The fourth figure is an exploded perspective view of the first embodiment of the compound radiator of the present invention. The fifth figure is a three-dimensional combination view of the fourth figure. The sixth figure is the perspective of another embodiment of the compound radiator of the present invention. Exploded view. The seventh figure is the three-dimensional combination view of the sixth and sixth figures. [Description of the main component numbers] Composite derailer 30 > 30! Base 31, 31 'top surface 33 first & platform 34, 34' The second bosses 35, 35 'pressing portions 37, 37' the first grooves 38, the second grooves 39. The fins 41, 41 ', the bottom plates 42, 42, the side plates 43, 43, the top plates 45, and the protruding portions 46.[Description of the preferred embodiment] Please also refer to the fourth and fifth figures. FIG. 5 is a first embodiment of the composite diffuser and its manufacturing method of the present invention. The composite radiator 30 includes a base 31 and two mounting devices. The heat dissipation is provided on the base 31. The fin group 4 1 α The base 31 is formed by extrusion, and its top surface 3 3 extends upward from the first boss 34 in the center, and two are located on the edges of both sides. The first boss 3 5. The first boss 3 4 forms a first groove 3 8 on both sides and is slightly C: \ My Docimients \ FORM \ A1120XP_CHANG. Ptd page 6 41835 b 5. Description of the invention (4) 'present "T " Shape, and the second boss 35 is formed on the inner side-the second groove-like 39. A 'The radiating fin group 41 is formed by pressing a metal sheet and bending it into a wave shape to form a plurality of coplanar backsheets 42. 3, side panels 43 extending upward from both sides of the back sheet 42, and tops 45 which are located between the adjacent two side sheets 43 and are arranged in a staggered relationship with the back sheet 42. The back sheet 42 further extends outward at each end. A protruding portion 46 The protruding portion 46 protrudes beyond the side edge of the side piece 43 to match the structure of the first groove 38 and the second groove 39 of the base 31 (to be described in detail later). When the group 46 is formed, the protruding portion 46 is used. Matching the size between the first groove 38 and the second groove 39 of the base 31, slide the two heat sink fin groups 41 into the top surface 33 of the base 31. After that, use it appropriately The positions of the first protrusion 34 and the second protrusion 35 of the jig impacting the base 31 corresponding to the protrusions 46 of the heat dissipation fin group 41 'At this time, the first protrusion 34 and A pressing portion 37 recessed inwardly and downwardly is formed on the two bosses 35 to firmly press the protruding portion 46 of the heat dissipation fin group 41, and the heat dissipation fin group 41 is fixed on the base 31. Furthermore, 'the appropriate thermal conductive medium' such as thermal grease or thermal tape can be added between the bottom plate 42 of the heat dissipation fin group 41 and the top surface 33 of the base 31 to further improve heat dissipation. Please refer to the sixth and seventh figures for the performance, which is the second embodiment of the composite radiator and the manufacturing method of the present invention. Its overall structure and manufacturing method are similar to the foregoing first embodiment. The composite radiator 3 01 base 31, the first boss 34 and the second boss 3 5 ′ are simple convex strips without a groove structure, and correspondingly, the heat radiation sheet group 41 ′ film 4 2. The two ends are flush with the side edge of the side panel 4 3 ′ and do not protrude beyond the side panel 4 3, except for the side green.

C: \ My Documents \ FORM \ iU120XP_CHANG.ptd Page 7 4 183 5 b 5. Description of the invention (5) Impact the first projection 34 and the second projection 35 of the base 31 with a jig, corresponding to The positions of the two ends of the radiating fin group 41, the bottom plate 42 ', the first protrusion 34, and the first protrusion 35' form a pressing portion 37 that is recessed inwardly and downwardly to firmly press the fin The fin group 41 is at the end of the month 42 and the radiating fin group 41 is firmly installed on the base 3 Γ. In summary, the present invention complies with the patent requirements, and a patent application is filed in accordance with the law. But the above-mentioned ones are only the doudouxing of the present invention. # 1 The person with the technology in this case is following the examples to implement the examples. Anyone familiar with the changes should cover the following equivalent modifications or 〇

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Claims (1)

4183 5 8 I A composite heat sink includes: a base 'whose top surface extends at least a first boss and a second boss upwardly at an appropriate position; and a heat sink fin set correspondingly mounted on the base Between the first boss and the second boss; and the first boss and the second boss of the base are formed with a pressing portion recessed inwardly and downwardly at a special position for pressing the heat dissipation fin group Corresponding to the structure, the heat radiation fin group is firmly installed on the base. 2. The composite heat sink according to item 1 of the scope of patent application, wherein the base is formed by extrusion, and a first boss and two second bosses extend upward from the top surface, and the first The bosses are located at the center of the top surface of the base, and the two second bosses are respectively located at two side edges of the top surface of the base. 3. The composite heat sink according to item 2 of the scope of patent application, which comprises two heat dissipation fin groups correspondingly installed between the first boss and the second boss of the base. The composite heat sink according to item 2 or 3 of the scope of patent application, wherein the first boss is formed with a first trench on both sides and is slightly 11 T11-shaped. 5. The composite heat sink according to item 4 of the scope of patent application, wherein the second boss forms a second groove on the inside ° 6 _ The composite heat sink according to item 1, 2 or 3 of the scope of patent application A heat sink, wherein the heat dissipation fin group is made of a metal sheet and repeatedly bent into a wave shape to form a plurality of coplanar negative plates, side plates extending upward from two sides of the negative plate, and located between adjacent two side fins. Opposite the negative C: \ My Documents \ F0RM \ A112ClXP_CHANG. Ptd Page 9 f. 4183 5 8 6. Shen Jing Patent Fan Yuan misaligned shell y 7. Compound heat dissipation as described in item 6 of the patent scope of Chu Shican The side edge of the slice "A ΛA 淑" is flush, and it is directly for the first of the base! ^ 口 is pressed against the second 0, * ^ ^, convex part on the convex 0. 8 · The composite heat sink as described in item 6 of the Shen Qing Patent Fan Liyuan, wherein the ^ 5 further extends outwardly to each of a protrusion, and the protrusion # '卞 狗 于 Outside the side edge of the side piece, The pressing portion on the first boss and the second boss of the base are pressed against each other. 9_ The composite heat sink as described in claim 6 of the patent, wherein the A heat conducting medium is further provided between the bottom sheet of the heat dissipation sheet set and the top surface of the base. 1 0. — A method for manufacturing a composite radiator, including the following steps: Obtained by extrusion—the base 'the top surface of the base extends upward with a first boss in the center, and two on each side The second boss of the edge; punching and bending the metal sheet to obtain two wavy fins. Groups * Each fin group has a plurality of coplanar negatives, and the sides extending upward from the two sides of the negative Films, and top films located between adjacent two films and staggered with the negative film; The heat dissipation fin set is correspondingly installed between the first boss and the second boss on the top surface of the base; the proper position of the first boss and the second boss of the base with the jig is used to make the first convex The depressions inwardly and downwardly are formed on the stage and the two bosses to oppose the corresponding structure of the heat dissipation fin > i group, and the heat dissipation fin C: \ My Documents \ F0RM \ A1120XP_CHANG. Ptd 4 183 5 8 6. Scope of patent application The film set is firmly installed on the base. 11. The manufacturing method of the composite heat sink according to item 10 of the scope of the patent application, wherein the first boss forms a first groove on both sides and is slightly M τη-shaped, and the second boss A second groove is formed on the inside. 2. The manufacturing method of the composite heat sink as described in item 11 of the scope of the patent application, wherein the bottom plate of the heat dissipation fin group further extends outward at each end with a protrusion. The protruding portion protrudes beyond the side edge of the side panel to cooperate with the first groove and the second groove structure of the base. 13. · A method for manufacturing a composite radiator, comprising the following steps: obtaining a base by extrusion, the top surface of the base extending upwardly with two bosses located on the edges of the two sides; punching and bending a metal sheet Folding to obtain a wave-shaped heat dissipation fin group, the heat dissipation fin group has a plurality of coplanar film, a side X extending upward from two sides of the film, and an interlaced arrangement with the film located between adjacent two films. The top plate of the heat dissipation fin is correspondingly installed between the two bosses on the top surface of the base; the fixture is used to impact the appropriate positions of the two bosses of the base, so that the bosses form a pressing portion recessed inward and downward. In order to resist the corresponding structure of the cooling fin moon group, the cooling fin group is firmly installed on the base. 1 4. The method for manufacturing a composite heat sink as described in item 13 of the scope of patent application, wherein each protrusion of the base forms a groove on the inner side. 1 5 · The manufacturing method of the composite heat sink according to item 14 of the scope of patent application, wherein the bottom of the heat dissipation fin group is further outward at both ends, respectively. C: \ My Documents \ F0RM \ AI120XP_CHANG.ptd Page II 4 183 5 8