US20100181047A1 - Fins-type heat sink and method for assembling the same - Google Patents

Fins-type heat sink and method for assembling the same Download PDF

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Publication number
US20100181047A1
US20100181047A1 US12/356,140 US35614009A US2010181047A1 US 20100181047 A1 US20100181047 A1 US 20100181047A1 US 35614009 A US35614009 A US 35614009A US 2010181047 A1 US2010181047 A1 US 2010181047A1
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US
United States
Prior art keywords
presser
fins
heat pipe
heat sink
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/356,140
Inventor
Kuo-Len Lin
Chen-Hsiang Lin
Chiao-Li Huang
Ken Hsu
Chih-Hung Cheng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CpuMate Inc
Golden Sun News Techniques Co Ltd
Original Assignee
CpuMate Inc
Golden Sun News Techniques Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CpuMate Inc, Golden Sun News Techniques Co Ltd filed Critical CpuMate Inc
Priority to US12/356,140 priority Critical patent/US20100181047A1/en
Assigned to GOLDEN SUN NEWS TECHNIQUES CO.,LTD., CPUMATE INC. reassignment GOLDEN SUN NEWS TECHNIQUES CO.,LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHENG, CHIH-HUNG, HSU, KEN, HUANG, CHIAO-LI, LIN, CHEN-HSIANG, LIN, KUO-LEN
Publication of US20100181047A1 publication Critical patent/US20100181047A1/en
Priority to US13/278,162 priority patent/US8291590B2/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/367—Cooling facilitated by shape of device
    • H01L23/3672—Foil-like cooling fins or heat sinks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
    • H01L23/427—Cooling by change of state, e.g. use of heat pipes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/467—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49345—Catalytic device making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49353—Heat pipe device making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the present invention relates to a technique of assembling a heat sink, and in particular to an assembling structure for reinforcing heat pipes and fins and a method for assembling the same.
  • the conventional heat sink 1 a includes a base 10 a , at least one heat pipe 11 a that is bent to upright on the base 10 a , and a plurality of fins 12 a provided on the heat pipe 11 a .
  • the base 10 a being brought into thermal contact with a heat source (not shown)
  • the heat generated by the heat source can be transferred to the heat pipe 11 a via the thermal contact with the base 10 a .
  • the heat pipe 11 a conducts the heat to the respective fins 12 a , thereby dissipating the heat. Via this arrangement, a heat-dissipating effect can be achieved.
  • one end of the heat pipe 11 a is an inactive end 110 a because the diameter of the inactive end 110 a is reduced when the heat pipe 11 a is subjected to a sealing process.
  • this inactive end 110 a cannot fit with the fins 12 a tightly. Therefore, after the fins 12 a are disposed on the heat pipe 11 a piece by piece orderly, the fins 12 a can be only fitted tightly with the heat pipe 1 a via the other end rather than the inactive end 110 a . Thus, the fins 12 a may fall off the heat pipe 11 a easily.
  • the present Inventor proposes a reasonable and novel structure based on his delicate researches and expert experiments.
  • the present invention is to provide a fins-type heat sink and a method for assembling the same.
  • a presser and a plurality of caps are further disposed over the respective fins of the heat sink.
  • the presser provides a pressing force to prevent the fins from falling off the heat pipe. Further, via the caps, the presser can press the distal ends of the heat pipe, thereby preventing the separation of the presser from the heat pipe.
  • the present invention is to provide a fins-type heat sink, which includes a base, a heat pipe thermally connected on the base, a plurality of fins disposed on the heat pipe at intervals, a presser and a plurality of caps.
  • Each of the fins is provided with penetrating holes.
  • the outer periphery of the penetrating hole is formed with an annular wall.
  • the presser is provided with through-holes for cooperating with the penetrating holes respectively.
  • the periphery of the through-hole is provided with an annular neck for allowing the distal end of the heat pipe to penetrate.
  • the outer periphery of each annular neck is provided with notches on the presser.
  • Each of the caps covers the annular neck, and it extends downwards to form protruding flaps. The flap passes through the notch to be folded outwards so as to abut the bottom surface of the presser.
  • the present invention is to provide a method for assembling a fins-type heat sink, which includes the steps of:
  • a heat sink, a presser and a plurality of caps are provided.
  • the heat sink has a heat pipe and a plurality of fins disposed on the heat pipe.
  • the presser is provided with through-holes allowing the distal end of the heat pipe to be inserted therein.
  • the periphery of each through-hole is provided with an annular neck.
  • the presser is provided with notches that are arranged circumferentially outside the annular neck.
  • a plate-like die is disposed on the topmost fin of the heat sink.
  • the respective fins of the heat sink can be pressed by the presser, so that these fins cannot be detached from the heat pipe easily.
  • the distal end of the heat pipe can abut inside the cap.
  • the annular neck of the presser is shrunk on the heat pipe due to the inward pressing of the cap, thereby reinforcing the strength of connection between the fins and the heat pipe and avoiding the separation of the presser from the heat pipe.
  • FIG. 1 is a cross-section view showing a conventional heat sink
  • FIG. 2 is an exploded view showing the heat sink of the present invention
  • FIG. 3 is an assembled view showing the heat sink of the present invention.
  • FIG. 4 is a cross-sectional view showing the heat sink of the present invention.
  • FIG. 5 is a flow chart showing the steps of the assembling method of the present invention.
  • FIG. 6 is an exploded view showing the presser and the cap of the present invention.
  • FIG. 7 is a schematic view showing the assembly of the presser and the cap of the present invention.
  • FIG. 8 is a schematic view showing the operating state before the assembly of the heat sink with the presser and the cap of the present invention.
  • FIG. 9 is a schematic view showing the operating state during the assembly of the heat sink with the presser and the cap of the present invention.
  • FIG. 10 is a schematic view showing the operating state after the assembly of the heat sink with the presser and the cap of the present invention.
  • the present invention provides a fins-type heat sink and a method for assembling the same. Please refer to FIGS. 2 and 3 , which are an exploded view and an assembled view of the heat sink of the present invention respectively.
  • the heat sink 1 includes a base 10 , at least one heat pipe 11 , a plurality of fins 12 , a presser 13 and a plurality of caps 14 .
  • the base 10 is made of a heat-conducting material and is attached to a heat source (not shown) for dissipating the heat generated by the heat source.
  • the heat pipe 11 is thermally connected on the base 10 .
  • the fins 12 penetrate the heat pipe 11 and are overlapped with each other.
  • Each of the fins 12 is made of a heat-conducting material, and it is provided with penetrating holes 120 for allowing the heat pipe 11 to penetrate therein.
  • the periphery of each penetrating hole 120 is formed with an annular wall 121 , so that the fins 12 are separated from each other via the respective annular walls 121 .
  • the presser 13 and the caps 14 are further provided over the fins 12 , thereby preventing the fins 12 from falling off the heat pipe 11 .
  • the presser 13 is also made of a heat-conducting material. The thickness of the presser 13 can be larger than that of the respective fins 12 , thereby providing a better structural strength.
  • a heat sink 1 at first, a heat sink 1 , a presser 13 and a plurality of caps 14 are provided.
  • the heat sink 1 has a structure of the above-mentioned characteristics.
  • the presser 13 is provided with through-holes 130 that correspond to the penetrating holes 120 of each fin 12 respectively and allow the distal ends of the heat pipe 11 to be inserted therein.
  • the periphery of each through-hole 130 is provided with an annular neck 131 .
  • the presser 13 is provided with notches 132 that are arranged circumferentially outside the annular neck 131 .
  • the caps 14 are covered on the annular neck 131 of the presser 13 respectively.
  • the caps 14 each extend downwards to form protruding flaps 140 penetrating the notches 132 respectively ( FIG. 7 ).
  • the flap 140 penetrates the notch 132 , it is slightly folded into an inclined orientation.
  • a plate-like die 2 is disposed on the topmost fin 12 of the heat sink 1 .
  • the thickness of the plate-like die 2 is substantially identical to the pitch between the respective fins 12 .
  • step S 4 finally, the distal end of the heat pipe 11 penetrates the through-hole 130 of the presser 13 to abut inside the corresponding cap 14 .
  • the flap 140 is folded outwards at a right angle so as to abut the bottom surface of the presser 13 ( FIG. 10 ).
  • the respective fins 12 can be pressed by the presser 13 , so that these fins 12 cannot be detached from the heat pipe 11 easily.
  • the distal ends of the heat pipe 11 can abut inside the caps 14 .
  • the annular neck 131 of the presser 13 is shrunk on the heat pipe 11 due to the inward pressing of the cap 14 , thereby reinforcing the strength of connection between the fins 12 and the heat pipe 11 and avoiding the separation of the presser 13 from the heat pipe 11 .
  • the fins-type heat sink and the method for assembling the same according to the present invention can be obtained.
  • the present invention achieves the expected effects and overcomes the drawbacks of prior art. Further, the present invention really demonstrates novelty and inventive steps and thus conforms to the requirements for an invention patent.

Abstract

In a heat sink and a method for assembling the same, the heat sink includes a base, a heat pipe, fins, a presser and caps. The presser is provided with through-holes. The periphery of the through-hole is provided with an annular neck, so that the distal end of the heat pipe can penetrate the through-hole. The periphery of each annular neck is provided with notches on the presser. Each cap covers on the annular neck, and it extends downwards to form protruding flaps. The flap penetrates the notch and is folded outwards to abut the bottom surface of the presser. According to the assembling method, via the presser and the caps, the fins can be assembled with the heat pipe tightly.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a technique of assembling a heat sink, and in particular to an assembling structure for reinforcing heat pipes and fins and a method for assembling the same.
  • 2. Description of Prior Art
  • As shown in FIG. 1, the conventional heat sink 1 a includes a base 10 a, at least one heat pipe 11 a that is bent to upright on the base 10 a, and a plurality of fins 12 a provided on the heat pipe 11 a. With the base 10 a being brought into thermal contact with a heat source (not shown), the heat generated by the heat source can be transferred to the heat pipe 11 a via the thermal contact with the base 10 a. Then, the heat pipe 11 a conducts the heat to the respective fins 12 a, thereby dissipating the heat. Via this arrangement, a heat-dissipating effect can be achieved.
  • However, in the above-mentioned heat sink 1 a, one end of the heat pipe 11 a is an inactive end 110 a because the diameter of the inactive end 110 a is reduced when the heat pipe 11 a is subjected to a sealing process. As a result, when the fins 12 a are disposed on the heat pipe, this inactive end 110 a cannot fit with the fins 12 a tightly. Therefore, after the fins 12 a are disposed on the heat pipe 11 a piece by piece orderly, the fins 12 a can be only fitted tightly with the heat pipe 1 a via the other end rather than the inactive end 110 a. Thus, the fins 12 a may fall off the heat pipe 11 a easily.
  • Therefore, in order to overcome the above problems, the present Inventor proposes a reasonable and novel structure based on his delicate researches and expert experiments.
    • SUMMARY OF THE INVENTION
  • The present invention is to provide a fins-type heat sink and a method for assembling the same. A presser and a plurality of caps are further disposed over the respective fins of the heat sink. The presser provides a pressing force to prevent the fins from falling off the heat pipe. Further, via the caps, the presser can press the distal ends of the heat pipe, thereby preventing the separation of the presser from the heat pipe.
  • The present invention is to provide a fins-type heat sink, which includes a base, a heat pipe thermally connected on the base, a plurality of fins disposed on the heat pipe at intervals, a presser and a plurality of caps. Each of the fins is provided with penetrating holes. The outer periphery of the penetrating hole is formed with an annular wall. The presser is provided with through-holes for cooperating with the penetrating holes respectively. The periphery of the through-hole is provided with an annular neck for allowing the distal end of the heat pipe to penetrate. The outer periphery of each annular neck is provided with notches on the presser. Each of the caps covers the annular neck, and it extends downwards to form protruding flaps. The flap passes through the notch to be folded outwards so as to abut the bottom surface of the presser.
  • The present invention is to provide a method for assembling a fins-type heat sink, which includes the steps of:
  • (a) A heat sink, a presser and a plurality of caps are provided. The heat sink has a heat pipe and a plurality of fins disposed on the heat pipe. The presser is provided with through-holes allowing the distal end of the heat pipe to be inserted therein. The periphery of each through-hole is provided with an annular neck. The presser is provided with notches that are arranged circumferentially outside the annular neck.
  • (b) The caps are covered on the annular necks of the presser. The caps each extend downwards to form protruding flaps penetrating the notches respectively.
  • (c) A plate-like die is disposed on the topmost fin of the heat sink.
  • (d) The distal end of the heat pipe penetrates the through-hole of the presser to abut inside the cap. At the same time, the flap is folded outwards by means of the plate-like die.
  • According to the present invention, the respective fins of the heat sink can be pressed by the presser, so that these fins cannot be detached from the heat pipe easily. By means of the pressing force exerted by the presser to the respective fins, the distal end of the heat pipe can abut inside the cap. Also, the annular neck of the presser is shrunk on the heat pipe due to the inward pressing of the cap, thereby reinforcing the strength of connection between the fins and the heat pipe and avoiding the separation of the presser from the heat pipe.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a cross-section view showing a conventional heat sink;
  • FIG. 2 is an exploded view showing the heat sink of the present invention;
  • FIG. 3 is an assembled view showing the heat sink of the present invention;
  • FIG. 4 is a cross-sectional view showing the heat sink of the present invention;
  • FIG. 5 is a flow chart showing the steps of the assembling method of the present invention;
  • FIG. 6 is an exploded view showing the presser and the cap of the present invention;
  • FIG. 7 is a schematic view showing the assembly of the presser and the cap of the present invention;
  • FIG. 8 is a schematic view showing the operating state before the assembly of the heat sink with the presser and the cap of the present invention;
  • FIG. 9 is a schematic view showing the operating state during the assembly of the heat sink with the presser and the cap of the present invention; and
  • FIG. 10 is a schematic view showing the operating state after the assembly of the heat sink with the presser and the cap of the present invention.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • In order to make the Examiner to further understand the characteristics and technical contents of the present invention, a detailed description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit the present invention.
  • The present invention provides a fins-type heat sink and a method for assembling the same. Please refer to FIGS. 2 and 3, which are an exploded view and an assembled view of the heat sink of the present invention respectively. The heat sink 1 includes a base 10, at least one heat pipe 11, a plurality of fins 12, a presser 13 and a plurality of caps 14.
  • The base 10 is made of a heat-conducting material and is attached to a heat source (not shown) for dissipating the heat generated by the heat source. The heat pipe 11 is thermally connected on the base 10. The fins 12 penetrate the heat pipe 11 and are overlapped with each other. Each of the fins 12 is made of a heat-conducting material, and it is provided with penetrating holes 120 for allowing the heat pipe 11 to penetrate therein. The periphery of each penetrating hole 120 is formed with an annular wall 121, so that the fins 12 are separated from each other via the respective annular walls 121.
  • Please refer to FIG. 4. In the present invention, the presser 13 and the caps 14 are further provided over the fins 12, thereby preventing the fins 12 from falling off the heat pipe 11. The presser 13 is also made of a heat-conducting material. The thickness of the presser 13 can be larger than that of the respective fins 12, thereby providing a better structural strength. The steps for assembling the heat sink will be described as follows.
  • Please refer to FIG. 5. In the step S1, at first, a heat sink 1, a presser 13 and a plurality of caps 14 are provided. The heat sink 1 has a structure of the above-mentioned characteristics. The presser 13 is provided with through-holes 130 that correspond to the penetrating holes 120 of each fin 12 respectively and allow the distal ends of the heat pipe 11 to be inserted therein. The periphery of each through-hole 130 is provided with an annular neck 131. The presser 13 is provided with notches 132 that are arranged circumferentially outside the annular neck 131.
  • Please refer to FIGS. 5 and 6. In the step S2, the caps 14 are covered on the annular neck 131 of the presser 13 respectively. The caps 14 each extend downwards to form protruding flaps 140 penetrating the notches 132 respectively (FIG. 7). When the flap 140 penetrates the notch 132, it is slightly folded into an inclined orientation.
  • Please refer to FIGS. 5 and 8. In the step S3, a plate-like die 2 is disposed on the topmost fin 12 of the heat sink 1. The thickness of the plate-like die 2 is substantially identical to the pitch between the respective fins 12.
  • Please refer to FIGS. 5 and 9. In the step S4, finally, the distal end of the heat pipe 11 penetrates the through-hole 130 of the presser 13 to abut inside the corresponding cap 14. At the same time, by means of the plate-like die 2, the flap 140 is folded outwards at a right angle so as to abut the bottom surface of the presser 13 (FIG. 10).
  • According to the present invention, the respective fins 12 can be pressed by the presser 13, so that these fins 12 cannot be detached from the heat pipe 11 easily. By means of the pressing force exerted by the presser 13 to the respective fins 12, the distal ends of the heat pipe 11 can abut inside the caps 14. Also, the annular neck 131 of the presser 13 is shrunk on the heat pipe 11 due to the inward pressing of the cap 14, thereby reinforcing the strength of connection between the fins 12 and the heat pipe 11 and avoiding the separation of the presser 13 from the heat pipe 11.
  • Therefore, via the above arrangement, the fins-type heat sink and the method for assembling the same according to the present invention can be obtained.
  • According to the above, the present invention achieves the expected effects and overcomes the drawbacks of prior art. Further, the present invention really demonstrates novelty and inventive steps and thus conforms to the requirements for an invention patent.
  • Although the present invention has been described with reference to the foregoing preferred embodiments, it will be understood that the invention is not limited to the details thereof. Various equivalent variations and modifications can still occur to those skilled in this art in view of the teachings of the present invention. Thus, all such variations and equivalent modifications are also embraced within the scope of the invention as defined in the appended claims.

Claims (7)

1. A fins-type heat sink, comprising:
a base (10);
a heat pipe (11) thermally connected on the base (10);
a plurality of fins (12) each provided with penetrating holes (120), an outer periphery of each penetrating hole (120) being formed with an annular wall (121), the plurality of fins (12) being overlapped on the heat pipe (11) at intervals;
a presser (13) provided with through-holes (130) for cooperating with the penetrating holes (120) of each fin (12) respectively, a periphery of each through-hole (130) being provided with an annular neck (131) for allowing a distal end of the heat pipe (11) to penetrate, an outer periphery of each annular neck (131) being provided with notches (132) on the presser (13); and
a plurality of caps (14) covering the annular necks (131) of the presser (13), each cap (14) extending downwards to form protruding flaps (140), the flap (140) passing through the notches (132) to be folded outwards so as to abut a bottom surface of the presser (13).
2. The fins-type heat sin according to claim 1, wherein the distal end of the heat pipe (11) abuts inside the corresponding cap (14).
3. The fins-type heat sin according to claim 1, wherein the presser (13) is made of a heat-conducting material.
4. The fins-type heat sin according to claim 1, wherein a thickness of the presser (13) is larger than that of each fin (12)
5. A method for assembling a fins-type heat sink, comprising the steps of:
(a) providing a heat sink (1), a presser (13) and a plurality of caps (14), the heat sink (1) having a heat pipe (11) and a plurality of fins (12) disposed on the heat pipe (11), the presser (13) being provided with through-holes (130) allowing the distal ends of the heat pipe (11) to be inserted therein, a periphery of each through-hole (130) being provided with an annular neck (131), the presser (13) being provided with notches (132) that are arranged circumferentially outside the annular neck (131);
(b) covering the caps (14) on the annular necks (131) of the presser (13) respectively, rach caps (14) extending downwards to form protruding flaps (140) penetrating the notches (132);
(c) disposing a plate-like die (2) on the topmost fin (12) of the heat sink (1);
(d) inserting a distal end of the heat pipe (11) through the through-hole (130) of the presser (13) to abut inside the cap (14), while folding the flaps (140) outwards via the plate-like die (2).
6. The method according to claim 5, wherein in the step (b), each of the flaps (140) is folded outwards after penetrating the notch (132).
7. The method according to claim 5, wherein in the step (c), a thickness of the plate-like die (2) is substantially identical to the pitch between the respective fins (12).
US12/356,140 2009-01-20 2009-01-20 Fins-type heat sink and method for assembling the same Abandoned US20100181047A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/356,140 US20100181047A1 (en) 2009-01-20 2009-01-20 Fins-type heat sink and method for assembling the same
US13/278,162 US8291590B2 (en) 2009-01-20 2011-10-20 Method for assembling fins-type heat sink

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/356,140 US20100181047A1 (en) 2009-01-20 2009-01-20 Fins-type heat sink and method for assembling the same

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/278,162 Division US8291590B2 (en) 2009-01-20 2011-10-20 Method for assembling fins-type heat sink

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Cited By (6)

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US20120002373A1 (en) * 2010-07-02 2012-01-05 Hitachi Cable, Ltd. Heat pipe type cooling device and railcar control equipment using the same
US20120138273A1 (en) * 2010-12-06 2012-06-07 Hon Hai Precision Industry Co., Ltd. Heat sink with thermally conductive cover
US20130175019A1 (en) * 2012-01-05 2013-07-11 Sapa Ab Heat sink and method for manufacturing
USD715750S1 (en) * 2013-11-26 2014-10-21 Kilpatrick Townsend & Stockton Llp Power heat sink with imbedded fly cut heat pipes
US20160102920A1 (en) * 2014-10-08 2016-04-14 Mersen Canada Toronto Inc. Heat pipe assembly with bonded fins on the baseplate hybrid
CN108731096A (en) * 2017-04-13 2018-11-02 刘勇 A kind of heat shield and the radiator including heat shield

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US6738257B1 (en) * 2002-12-02 2004-05-18 Aai-Sol Electronics Heat sink
US6779595B1 (en) * 2003-09-16 2004-08-24 Cpumate Inc. Integrated heat dissipation apparatus
US20050087329A1 (en) * 2003-10-03 2005-04-28 Jie Zhang Heat dissipation module with a pair of fans
US20060113069A1 (en) * 2004-11-29 2006-06-01 Denso Corporation Heat exchanger
US20070131390A1 (en) * 2005-12-09 2007-06-14 Kuo-Hsin Chen Heat dissipating module and method of fabricating the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120002373A1 (en) * 2010-07-02 2012-01-05 Hitachi Cable, Ltd. Heat pipe type cooling device and railcar control equipment using the same
US8755186B2 (en) * 2010-07-02 2014-06-17 Hitachi Power Solutions Co., Ltd. Heat pipe type cooling device and railcar control equipment using the same
US20120138273A1 (en) * 2010-12-06 2012-06-07 Hon Hai Precision Industry Co., Ltd. Heat sink with thermally conductive cover
US20130175019A1 (en) * 2012-01-05 2013-07-11 Sapa Ab Heat sink and method for manufacturing
US9233438B2 (en) * 2012-01-05 2016-01-12 Sapa Ab Heat sink and method for manufacturing
USD715750S1 (en) * 2013-11-26 2014-10-21 Kilpatrick Townsend & Stockton Llp Power heat sink with imbedded fly cut heat pipes
US20160102920A1 (en) * 2014-10-08 2016-04-14 Mersen Canada Toronto Inc. Heat pipe assembly with bonded fins on the baseplate hybrid
CN108731096A (en) * 2017-04-13 2018-11-02 刘勇 A kind of heat shield and the radiator including heat shield

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US20120137518A1 (en) 2012-06-07

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