WO2000078110A1 - A heat sink clip for an electronic assembly - Google Patents

A heat sink clip for an electronic assembly Download PDF

Info

Publication number
WO2000078110A1
WO2000078110A1 PCT/US2000/015438 US0015438W WO0078110A1 WO 2000078110 A1 WO2000078110 A1 WO 2000078110A1 US 0015438 W US0015438 W US 0015438W WO 0078110 A1 WO0078110 A1 WO 0078110A1
Authority
WO
WIPO (PCT)
Prior art keywords
fastener
stem
spring arm
cover
heat sink
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.)
Ceased
Application number
PCT/US2000/015438
Other languages
English (en)
French (fr)
Inventor
Mike Macgregor
Michael T. Crocker
Thomas Wong
Peter Davison
Rolf A. Konstad
David A. Jones
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.)
Intel Corp
Original Assignee
Intel Corp
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 Intel Corp filed Critical Intel Corp
Priority to JP2001502631A priority Critical patent/JP2003501842A/ja
Priority to MXPA01012703A priority patent/MXPA01012703A/es
Priority to AU53226/00A priority patent/AU5322600A/en
Publication of WO2000078110A1 publication Critical patent/WO2000078110A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1417—Mounting supporting structure in casing or on frame or rack having securing means for mounting boards, plates or wiring boards
    • H05K7/142—Spacers not being card guides
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1429—Housings for circuits carrying a CPU and adapted to receive expansion cards
    • H05K7/1431—Retention mechanisms for CPU modules
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/42—Independent, headed, aperture pass-through fastener
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/75—Joints and connections having a joining piece extending through aligned openings in plural members

Definitions

  • the present invention relates to a fastener that can be used to attach a heat sink to a cover of an electronic assembly.
  • Integrated circuits are typically assembled into packages that are soldered to a printed circuit board.
  • the printed circuit board and integrated circuit package may be assembled into a cartridge that can be plugged into a motherboard of a computer.
  • Intel Corp. the assignee of the present application, has sold a cartridge commonly referred to as a single edge contact cartridge (SECC) that includes a heat sink and a cover that are coupled to a printed circuit board.
  • SECC single edge contact cartridge
  • the SECC may have a number of integrated circuit packages mounted to the printed circuit board and thermally coupled to the heat sink.
  • the heat sink is attached to the cover by a number of fasteners that extend through clearance holes in the printed circuit board.
  • the fasteners are constructed to exert a spring force that push the heat sink into one of the integrated circuit ⁇ packages.
  • the integrated circuit package in contact with the heat sink contains a microprocessor that generates a relatively large amount of heat during operation. The spring force decreases the thermal impedance between the package and the heat sink.
  • the fasteners of the prior art are relatively expensive to produce and assemble into the SECC. It would be desirable to provide an electronic assembly fastener that can exert a spring force and is relatively inexpensive to both produce and assemble.
  • One embodiment of the present invention is a fastener for an electronic assembly.
  • the fastener may have a spring arm that extends from a stem.
  • Figure 1 is an exploded view showing an embodiment of an electronic assembly of the present invention
  • Figure 2 is a side view of an embodiment of a fastener of the electronic assembly
  • Figure 3 is a perspective view of an alternate embodiment of the fastener
  • Figure 4 is an exploded view of an alternate embodiment of an electronic assembly.
  • Figures 1 and 2 show an embodiment of an electronic assembly 10 of the present invention.
  • the assembly 10 may include integrated circuit packages 12 and 14 that are mounted to a printed circuit board 16.
  • Each package 12 and 14 may contain one or more integrated circuits (not shown).
  • package 12 may contain a microprocessor.
  • Packages 14 may contain static random access memory (SRAM) devices.
  • the printed circuit board 16 may also contain passive elements 18 such as capacitors.
  • the assembly 10 may further have a cover 20 and a thermal element 22.
  • the thermal element 22 may be a heat sink which has a plurality of fins 24 that extend from a pedestal 26. A portion of the pedestal 26 may be pressed into a lid 28 of the integrated circuit package 12.
  • the heat sink 22 may have a pair of channels 30 that create air ducts when assembled onto the printed circuit board 16.
  • the assembly 10 may include a plurality of fasteners 32 that can be inserted through clearance holes 34 in the heat sink 22 and printed circuit board 16 and be attached to the cover 20.
  • the clearance holes 34 may each have a diameter that is larger than the diameter of a fastener 32 to allow the heat sink 22 to "float" relative to the printed circuit board 16 and compensate for a difference in the coefficient of thermal expansion of the circuit board 16 and the sink 22.
  • the assembly cover 20 may have a plurality of integral fasteners 36 that extend through corresponding holes 38 in the printed circuit board 16 and attach the cover 20 to the board 16.
  • Each fastener 32 may include a pair of spring arms 40 that extend from a stem 42.
  • the stem 42 may have a barbed portion 44 that is inserted and embedded into a corresponding boss 46 of the cover 20.
  • the spring arms 40 exert a spring force onto the heat sink 22.
  • the spring force pushes the pedestal 26 into the integrated circuit package 12.
  • Each fastener 32 may have a stop 48 that engages the heat sink 22 and limits the insertion depth of the stem 42 and the deflection of the spring arms 40.
  • Each spring arm 40 may have a radial shape that is flexible enough to be deflected but stiff enough to exert a spring force onto the heat sink 22.
  • the spring arms 40 also provide a keying feature that allows an operator or automated equipment to readily align the fasteners 32 into the assembly 10. Additionally, the spring arms 40 can provide a relatively uniform spring force onto the heat sink 22.
  • Each fastener 32 can be constructed as an injection molded plastic part that is relatively inexpensive to produce.
  • FIG 3 shows an alternate embodiment of a fastener 100 that has a first stem 102 attached to a second stem 104 by a connecting rod 106.
  • Each stem 102 and 104 has a pair of spring arms 108, a barbed portion 110 and a stop 112.
  • the connecting rod 106 may have a pair of head surfaces 114 that allow an operator or automated equipment to more readily insert the fastener 100 into an electronic assembly.
  • the connecting rod 106 allows the stems 102 and 104 to be inserted into an electronic assembly at the same time, thereby further reducing the cost of assembling the fastener 100.
  • the fastener 100 may have a truss structure 116 that provides structural support between the stems 102 and 104 while minimizing the fastener weight.
  • the fastener 100 can be constructed as an injection molded plastic part.
  • FIG 4 shows an alternate embodiment of an electronic assembly 120 with a pair of fasteners 122 that can be used to attach a heat sink 124 to a cover 126.
  • Each fastener 122 includes a connecting rod 128 that connects a first stem 130 to a second stem 132.
  • Each stem 130 and 132 includes a pair of spring arms 134, a barbed portion 136 and a stop 138.
  • the barbed portions 136 extend into and are embedded into corresponding bosses 140 of the cover 126.
  • the spring arms 134 exert spring forces which push the heat sink 124 into an integrated circuit package 142 that is mounted to a printed circuit board 144.
  • the fasteners 122 can be inserted into channels 146 of the heat sink 124 so that the stems 130 and 132 extend through corresponding clearance holes 148 in the sink 124 and printed circuit board 144.
  • the assembly 120 may include a fan assembly 150 that can be coupled to the heat sink 124.
  • the stems 130 and 132 of each fastener 122 can extend through corresponding clearance holes 152 in the fan assembly 150 in a manner which allows an operator to install the fasteners 122 by pushing on the head of the fastener stems 130 and 132.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Mounting Components In General For Electric Apparatus (AREA)
PCT/US2000/015438 1999-06-10 2000-06-02 A heat sink clip for an electronic assembly Ceased WO2000078110A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2001502631A JP2003501842A (ja) 1999-06-10 2000-06-02 電子アセンブリのためのヒート・シンク・クリップ
MXPA01012703A MXPA01012703A (es) 1999-06-10 2000-06-02 Un sujetador disipador termico para un montaje electronico.
AU53226/00A AU5322600A (en) 1999-06-10 2000-06-02 A heat sink clip for an electronic assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/330,242 1999-06-10
US09/330,242 US6101096A (en) 1999-06-10 1999-06-10 Heat sink clip for an electronic assembly

Publications (1)

Publication Number Publication Date
WO2000078110A1 true WO2000078110A1 (en) 2000-12-21

Family

ID=23288904

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/015438 Ceased WO2000078110A1 (en) 1999-06-10 2000-06-02 A heat sink clip for an electronic assembly

Country Status (8)

Country Link
US (1) US6101096A (https=)
JP (1) JP2003501842A (https=)
KR (1) KR100437246B1 (https=)
CN (1) CN1177518C (https=)
AU (1) AU5322600A (https=)
MX (1) MXPA01012703A (https=)
MY (1) MY117229A (https=)
WO (1) WO2000078110A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101825935B (zh) * 2009-02-24 2012-10-31 康舒科技股份有限公司 中间总线转换器的可拆装的散热封装结构

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5749851A (en) * 1995-03-02 1998-05-12 Scimed Life Systems, Inc. Stent installation method using balloon catheter having stepped compliance curve
US6585534B2 (en) * 1998-08-20 2003-07-01 Intel Corporation Retention mechanism for an electrical assembly
US6301113B1 (en) * 1999-05-07 2001-10-09 Psc Computer Products, Inc. Retainer clip for heat sink for electronic components
US6413119B1 (en) * 1999-06-14 2002-07-02 Delphi Technologies, Inc. Filtered electrical connector
US6570764B2 (en) * 1999-12-29 2003-05-27 Intel Corporation Low thermal resistance interface for attachment of thermal materials to a processor die
US6426466B1 (en) * 2000-02-09 2002-07-30 International Business Machines Corporation Peripheral power board structure
US20030175091A1 (en) * 2000-03-10 2003-09-18 Aukzemas Thomas V. Floating captive screw
TW460109U (en) * 2000-03-15 2001-10-11 Foxconn Prec Components Co Ltd Cooling device
US6515862B1 (en) * 2000-03-31 2003-02-04 Intel Corporation Heat sink assembly for an integrated circuit
US6542366B2 (en) * 2000-12-28 2003-04-01 Gateway, Inc. Circuit board support
DE10129788B4 (de) * 2001-06-20 2005-11-10 Siemens Ag Kunststoffrahmen zur Montage eines elektronischen Starkstrom-Steuergeräts
US6477053B1 (en) * 2001-07-17 2002-11-05 Tyco Telecommunications (Us) Inc. Heat sink and electronic assembly including same
US20030131970A1 (en) * 2002-01-17 2003-07-17 Carter Daniel P. Heat sinks and method of formation
US6829143B2 (en) * 2002-09-20 2004-12-07 Intel Corporation Heatsink retention apparatus
US7242583B2 (en) * 2002-12-16 2007-07-10 Paricon Technologies, Corporation System for loading a heat sink mechanism independently of clamping load on electrical device
TWM243893U (en) * 2002-12-20 2004-09-11 Hon Hai Prec Ind Co Ltd Heat sink clip
JP4173014B2 (ja) * 2003-01-17 2008-10-29 富士通株式会社 ヒートシンク及び電子機器の冷却装置及び電子機器
US7344345B2 (en) 2004-05-27 2008-03-18 Southco, Inc. Captive shoulder nut having spring tie-down
US7239520B2 (en) * 2004-12-29 2007-07-03 Hewlett-Packard Development Company, L.P. Self-locking fastener adapted to secure a heat sink to a frame
US7342796B2 (en) * 2005-06-03 2008-03-11 Southco, Inc. Captive shoulder nut assembly
US20070023879A1 (en) * 2005-07-29 2007-02-01 Vinayak Pandey Single unit heat sink, voltage regulator, and package solution for an integrated circuit
USD673922S1 (en) * 2011-04-21 2013-01-08 Kabushiki Kaisha Toshiba Portion of a substrate for an electronic circuit
USD673921S1 (en) * 2011-04-21 2013-01-08 Kabushiki Kaisha Toshiba Portion of a substrate for an electronic circuit
US8971038B2 (en) * 2012-05-22 2015-03-03 Lear Corporation Coldplate for use in an electric vehicle (EV) or a hybrid-electric vehicle (HEV)
US10003113B1 (en) * 2016-12-19 2018-06-19 Ford Global Technologies, Llc Fastening assembly and method
KR102181106B1 (ko) * 2019-02-22 2020-11-20 (주)엠지에이치코리아 기판과 케이스의 결합구조

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901204A (en) * 1983-06-28 1990-02-13 Kitagawa Industries Co., Ltd. Securing unit for securely mounting printed circuit boards relatively movable between two positions
US5608611A (en) * 1995-10-03 1997-03-04 United Technologies Automotive, Inc./Ford Motor Company Vehicle electronic module with integral mounting and grounding means
US5771559A (en) * 1995-03-16 1998-06-30 International Business Machines Corporation Removable heat sink assembly process for a chip package

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56129749U (https=) * 1980-03-04 1981-10-02
JPS5885394U (ja) * 1981-12-04 1983-06-09 北川工業株式会社 固定具
US4674910A (en) * 1982-07-14 1987-06-23 Kitagawa Industries Co., Ltd. Securing unit
US4566660A (en) * 1983-01-20 1986-01-28 National Molding Corporation Cradle clip
JPH0429123Y2 (https=) * 1987-12-02 1992-07-15
JPH0745999Y2 (ja) * 1989-10-21 1995-10-18 太陽誘電株式会社 電子部品用基板の搬送装置
US5419606A (en) * 1993-12-27 1995-05-30 Ford Motor Company Trim panel attaching pin with water seal
JP2738503B2 (ja) * 1994-05-27 1998-04-08 松下電器産業株式会社 保持具の係止構造
FR2729045B1 (fr) * 1994-12-29 1997-01-24 Bull Sa Procede et dispositif de fixation de deux elements tels qu'un radiateur de circuit integre a une carte de circuits imprimes
US5730210A (en) * 1997-02-24 1998-03-24 Silicon Integrated Systems Corporation Heat sink having an assembling device
US5947191A (en) * 1997-05-07 1999-09-07 International Business Machines Electronics module heat sink with quick mounting pins
TW335187U (en) * 1997-05-24 1998-06-21 Hon Hai Prec Ind Co Ltd Fastening device for CPU assembly
US5883783A (en) * 1997-07-15 1999-03-16 Intel Corporation GT clip design for an electronic packaging assembly
US5969947A (en) * 1997-12-17 1999-10-19 International Business Machines Corporation Integral design features for heatsink attach for electronic packages
US5973399A (en) * 1998-02-17 1999-10-26 Intel Corporation Tamper resistant attach mechanism between plastic cover and thermal plate assembly for processor cartridges
JP2000120598A (ja) * 1998-10-14 2000-04-25 Matsushita Electric Ind Co Ltd 冷却ファンの取付装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901204A (en) * 1983-06-28 1990-02-13 Kitagawa Industries Co., Ltd. Securing unit for securely mounting printed circuit boards relatively movable between two positions
US5771559A (en) * 1995-03-16 1998-06-30 International Business Machines Corporation Removable heat sink assembly process for a chip package
US5608611A (en) * 1995-10-03 1997-03-04 United Technologies Automotive, Inc./Ford Motor Company Vehicle electronic module with integral mounting and grounding means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101825935B (zh) * 2009-02-24 2012-10-31 康舒科技股份有限公司 中间总线转换器的可拆装的散热封装结构

Also Published As

Publication number Publication date
US6101096A (en) 2000-08-08
MY117229A (en) 2004-05-31
KR20020021122A (ko) 2002-03-18
CN1177518C (zh) 2004-11-24
CN1356018A (zh) 2002-06-26
AU5322600A (en) 2001-01-02
MXPA01012703A (es) 2002-11-04
JP2003501842A (ja) 2003-01-14
KR100437246B1 (ko) 2004-06-23

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