DE20300103U1 - Heat sink mounting - Google Patents

Abstract

A heat-sink fixture has a narrow, length-wise end-stop (2) which is set up to grip into a transverse groove of the heat-sink (7). A long safety/locking element (3) having two curved arms grips into two vertical notches or grooves of the heat -sink(7), and a springy wire rod has two bent ends which hook into fixture holes of the curved arms. Two torsion springs are each fixed on the bent ends of the springy wire rod and are held between the curved arms, and a pressure plate (5) is fixed at a long-length end recess of the end-stop (2), with a U-shaped spring(4) fixed in the rectangular lifting aperture of the end-stop (2).

Description

BOEHMERT & BOEHMERT

LAW FIRM

Bochmcrt & Bochmtrt · P.O.B. 10 71 27 · D-2S071 Bremen

German Patent and Trademark Office
Zweibrückenstrasse 12
80297 Munich

DR-ING. KARL BOEHMERT, PA(ii».i97ij

DlPU-ING. ALBERT BOEHMERT, pa(1wm»3)

WILHELM J. R STAHLBERG, BA Be.

DR.-ING. WALTER HOORMANN, Pa'.b™.

DIPL-PHYS. DR. HEINZ GODDAR,PA·,Mn»*«

DR.-ING. ROLAND LIESEGANO, pa·, MOndxn

WOLF-DETER KUNTZE, lawyer, Bremen. Aha*.

DIPL. -PHYS. ROBERT MÜNZHUBER. PA(IW-1993)

DR. LUDWIO KOUKER, RA B«™™ DR. (CHEM.) ANDREAS WNKLER, PA·, b™

MICHAELA HUTH-DERIO, RA. MB _n An.

DIPL-PHYS. DR. MARION TÖNHARDT, PA'.Dcu-idor

DR. ANDREAS EBERT-WEIDENFELLER ₁ RABInWi.

DIPL.-ING. EVA LIESEGANO, PA·. Man*™

DR. AXEL NORDEMANN, RA ₁ Bed» DIPL.-PHYS. DR. DOROTHEE WEBER-BRULS, PA·,

DIPL-PHYS. DR. STEFAN SCHOHE, PA',M4«h«n

DR.-ING. MATTHIAS PHILIPP, PA·. B^ffeid

DR. MARTIN WIRTZ, RA DO-eLtof

DR. DETMAR SCHÄFER, RA, Ekww,

DR. JAN BERND NORDEMANN, LLM., RA Bcitm

DR. CHRISTIAN CZYCHOWSKL ra BeHm

DR. CARL-RICHARD HAARMANN, RA M(fach»

DIPL-PHYS. CHRISTIAN W. APPELT, rv.uandM

PA - Palenlanwalt/Patenl Attorney RA - Rechlsanwalt/Altomey al Law * · European Paienl Attorney ⁰ - Maitre en Droit
° - licencie en Droil - Diplome dilutics Appro fondies en Conception de Produils el

innovation

All persons entitled to representation before the Attorney General, Attorney General
Profcjoon*l ReprejcnUlion with the Community Trukmark Office, Alictnle

PROF. DR WILHELM NORDEMANN, RA P DIPL-PHYS. EDUARD BAUMANN, PA DR.-INO. GERALD KLÖPSCH, PA'.oa«]*»f DIPL-OVG. HANS W. GROENING, &Rgr;&Lgr;·.&Mgr;&agr;&eegr;&agr;&eegr; DIPL-ING. SIEGFRIED SCHIRMER, PA*.B«kfcU DIPL.-PHYS. LORENZ HANEWINKEL, &rgr;&agr;'.&rgr;&lgr;&lgr;«™ DIPL-INO. ANTON FREIHERR RIEDERER V. PAAR, pa· DIPL-ING. DR. JAN TÖNNIES, PA RA &kgr;*&igr; DIPL-PHYS. CHRISTIAN BEHL. &Rgr;&agr;·.&Kgr;«1 DD ¹ L-PHYS. DR.-ING. UWE MANASSE, Pa·. Brno» DIPL-PHYS. DR. THOMAS L BnTNER, PA'.Beiu. DR. VOLKER SCHMrrZ, M . Juris (Oxford), RAMttndm.Pin DR. ANKE NORDEMANN-SCHIFFEU RA», ftukm DIPL-BIOL DR. JAN B. KRAUSS, PA'.Bert« DR. KLAUS TIM BRÖCKER, RA torte DR ₁ ANDREASDUSTMANN ₁ LLM ₁ RAPcUdM DIPL -INO. NILS TF SCHMID, pa· ,Mfcd™.?™ DR. FLORIAN SCHWAB, LLM., Mf ,um» DIPL-BIOCHEM. DR. MARKUS E^ ^T GELH.^RD, PAMflneh DIPL-CHEM. DR. KARL-HEINZ B. METTEN, pa·, Fmikiun DIPL-INO. DR. STEFAN TARUTTIS, PADd«itor PASCAL DECKER, RA Bai» DIPL-CHEM. DR. VOLKER SCHOLZ, PA Bf«™ DIPL-CHEM. DR. JÖRK ZWICKER, PA at« DR. CHRISTIAN MEISSNER, RA Mot.*«

In cooperation with/in cooperation with DIPL-CHEM. DR. HANS ULRICH MAY. pa>.um«i

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New registration

Our sign Our ref.

L10155

Bremen,

23 December 2002

Hung Tsi LIU, No. 29, Alley 3, Lane 240, Chung Hsing Rd., Long Tan Hsiang, Tao Yuan

Hsien, Taiwan, Republic of China

Heat sink mounting

1. Field of the invention

The invention relates to a heat sink mount designed to attach a heat sink to a CPU socket and, in particular, to such a heat sink mount that can be easily released when removing the heat sink.

2. Description of the state of the art

Hollerallee 32 ■ D-28209 Bremen · P.O.B. 10 71 27 · D-28071 Bremen •.Tel5uhoe.+^i»-421,34090 -Telefax+49-421-3491768

MUNICH - BREMEN - BERLItI- DÖsJbIjDORF - FRANKFURJ- BISL£FECD - JoJSdIm - KIÄl - JADBRBORM - LAI^)ShJJT - JoHENKIRCHEN

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- ALICANTE - PARIS

BOEHMERT*& BCTEHMERr

Fig. 1 shows the application of a heat sink mount to attach a heat sink 3' to a CPU socket 2', the heat sink 3' being held in close contact with the CPU of the CPU socket 2'. According to this construction, the heat sink mount consists of an angled clamp plate 11' and a vertical mounting plate 12'. The angled clamp plate 11' has a hook-shaped end 111' which is hooked into one of the two hook holes 21' of the CPU socket 2', while the other end is pivotally attached to the vertical mounting plate 12'. The vertical mounting plate 12' has one end which is pivotally attached to the angled clamp plate 11' and another end which is hooked into a hook-shaped portion 121' in the other of the two hook holes 21' of the CPU socket 2'. This structure of the heat sink mount is not satisfactory in function. When installed, the heat sink 3 cannot be kept in firm contact with the surface of the CPU on the CPU socket 2'. Furthermore, when removing the heat sink 3', a special tool is required to release the heat sink mount of the CPU socket 2'.

SUMMARY OF THE INVENTION

The present invention makes it possible to provide a heat sink mount which eliminates the aforementioned disadvantages. It is therefore an object of the present invention to provide a heat sink mount which in any case keeps the heat sink in close contact with the CPU when installed. It is another object of the present invention to provide a heat sink mount which can be easily released. To achieve these and other objects of the present invention, the heat sink mount comprises a narrow, elongated end stop adapted to grip a transversely extending notch of the heat sink, the end stop having longitudinally and transversely extending end notches at its two distal ends and a rectangular mounting hole in the center; further comprises an elongated securing element, the elongated securing element having two curved arms provided symmetrically at its two distal ends and being adapted to engage two vertical notches of the heat sink, the curved arms each having an upper notch receiving an elongated end notch of the end stop, a bottom mounting hole and a

TbO*EÄMER*T«& BOEHMErV" -3-

stale end terminating in a hook-shaped portion configured to hook into a hook hole of the CPU socket; a spring wire rod, the spring wire rod having two bent ends each hooking into the bottom mounting holes of the bent arms of the elongated securing element and two torsion springs each mounted on the bent ends of the spring wire rod and held between the bent arms of the securing element and the spring wire rod, a pressure plate mounted to a longitudinally extending end notch of the end stop and configured to be pressed by the user to urge the securing element away from the end stop and a U-shaped spring mounted in the rectangular attachment hole of the end stop and configured to engage a notch of the heat sink.

SHORT DESCRIPTION OF THE DRAWINGS:

Fig. 1 is a corresponding representation of a construction according to the state of the art.

Fig. 2 is a perspective view of a portion of the heat sink mount according to the present invention.

Fig. 3 is an exploded view showing the relationship between the heat sink mount and the heat sink and the CPU socket.

Fig. 4 is a representation of the assembly according to Fig. 3.

Fig. 5 is a side sectional view of the arrangement of Fig. 4 on an enlarged scale.

Fig. 6 is a schematic drawing showing the installation process of the present invention (I).

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-A-

Fig. 7 is a schematic drawing showing the installation process of the present invention (II).

Fig. 8 is a sectional view of the present invention showing the relative positioning between the end stop and the locking element.

Fig. 9 is a schematic sectional view of the present invention showing the pressure plate in the depressed state with the locking element moved upwardly into the longitudinally extending end notches of the end stop.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to Figures 2 to 4, a heat sink mount 100 is shown,
which consists of an end stop 2, a safety element 3, a U-shaped spring plate
4, a pressure element 5 and a spring wire rod 6.

The end stop 2 is a narrow, elongated plate having longitudinally extending end notches 21 and transversely extending end notches 22 at the ends for receiving the locking elements 3 and the pressure element 5, and a rectangular mounting hole 23 at the center for receiving the U-shaped spring plate 4.

The securing element 3 is an elongated element having two curved arms 31 provided symmetrically at the ends. The curved arms 31 each have a notch 311 on the top which receives an elongated end notch 21 of the end stop 2, a bottom mounting hole 312 which receives a curved end of the spring wire rod 6, and a distal end which terminates in a hook-shaped end portion 313.

Bt)ESMER? & EÖEHMEtff
-5-

When the heat sink mount 100 is attached to the heat sink 7, the end stop 2 is fitted into one of the transverse notches 71, and the bent arms 31 of the retaining member 3 are respectively hooked into corresponding vertical notches 72 of the heat sink 7, and the U-shaped spring plate 4 is fitted into a central notch 73 of the heat sink 7. When the end stop 2 is installed, it holds the retaining member 3 downward and causes the hook-shaped portions 313 of the retaining member 3, which are respectively to be hooked into corresponding hook holes 131 of the CPU socket 3, to firmly hold the heat sink 7 and the CPU 13 together. Further, two compression springs 61 are respectively attached to the bent ends of the spring wire rod 6 and held between the bent ends 31 of the securing element 3 and the spring wire rod 6 (only one compression spring 61 is shown in the drawings). When removing the heat sink attachment 100 from the heat sink 7, the compression element 5 is to be pressed in order to move the securing element 3 away from the end stop 2.

Referring to Fig. 5, since the U-shaped spring plate 4 fits in the center notch 73 of the heat sink 7, after installing the heat sink mount 100 in the heat sink 7 and the CPU socket 13, the spring force of the U-shaped spring plate 4 will hold the end stop 2 and the locking member 3 together to hold the hook-shaped portions 313 of the locking member 3 in the locking holes 133 of the CPU socket 13.

Referring to Figures 6 to 9, in the installed state, the end stop 2 is caused by the spring wire rod 6 to move the locking element 3 upwardly, thereby rotating the hook-shaped portions 313 of the bent arms 31 of the locking element 3 outwardly and holding them securely in the hook holes 131 of the CPU socket 13. In removal, the pressure plate 5 is pressed inwardly to move the locking element 3 upwardly into the longitudinally extending end notches 21 of the end stop 2, thereby causing the locking element 3 to disengage the hook-shaped portions 313 from the hook holes 131 of the CPU socket 13. At this time, the heat sink 7 will be easily detached from the CPU socket 13.

-6-

A prototype of the heat sink mount having the features of the attached drawings 2 to 9 has been constructed. The heat sink mount works very well to accomplish all of the above tasks and features.

Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and improvements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is limited only by the appended claims.

Claims (1)

Heat sink mount ( 100 ) for attaching a heat sink ( 7 ) to a CPU socket ( 13 ) to hold a CPU in the CPU socket ( 13 ) in close contact with the heat sink ( 7 ), characterized by
a narrow, elongated end stop ( 2 ) adapted to engage a transversely extending notch ( 71 ) of the heat sink ( 7 ), the end stop ( 2 ) having longitudinally and transversely extending end notches ( 21 , 22 ) at its two distal ends, and a rectangular mounting hole ( 23 ) in the middle,
an elongated securing element ( 3 ) having two curved arms ( 31 ) provided symmetrically at its two distal ends and adapted to engage in two vertical notches ( 72 ) of the heat sink ( 7 ), the curved arms ( 31 ) each having an upper notch ( 311 ) receiving an elongated end notch ( 21 ) of the end stop, a bottom fixing hole ( 312 ) and a distal end terminating in a hook-shaped portion ( 313 ) adapted to hook into a hook hole ( 131 ) of the CPU socket ( 13 ),
a spring wire rod ( 6 ) with two bent ends, each of which hooks into the bottom-side fastening holes ( 312 ) of the bent arms ( 31 ) of the elongated securing element ( 3 ),
two torsion springs ( 61 ) each mounted on the bent ends of the spring wire rod ( 6 ) and held between the bent arms ( 31 ) of the securing element ( 3 ) and the spring wire rod ( 6 ),
a pressure plate ( 5 ) secured to a longitudinally extending end notch ( 22 ) of the end stop ( 2 ) and adapted to be pressed by the user to urge the securing element ( 3 ) away from the end stop ( 2 ), and
a U-shaped spring ( 4 ) which is fixed in the rectangular attachment hole ( 23 ) of the end stop ( 2 ) and is adapted to engage in a notch ( 73 ) of the heat sink ( 7 ).