WO1999020091A2 - Support de modules electroniques - Google Patents

Support de modules electroniques Download PDF

Info

Publication number
WO1999020091A2
WO1999020091A2 PCT/DE1998/002978 DE9802978W WO9920091A2 WO 1999020091 A2 WO1999020091 A2 WO 1999020091A2 DE 9802978 W DE9802978 W DE 9802978W WO 9920091 A2 WO9920091 A2 WO 9920091A2
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
locking
carrier according
plug
receptacle
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/DE1998/002978
Other languages
German (de)
English (en)
Other versions
WO1999020091A3 (fr
Inventor
Rolf Paland
Reinhard Salmen
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.)
Wincor Nixdorf International GmbH
Original Assignee
Siemens Nixdorf Informationssysteme AG
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 Siemens Nixdorf Informationssysteme AG filed Critical Siemens Nixdorf Informationssysteme AG
Publication of WO1999020091A2 publication Critical patent/WO1999020091A2/fr
Publication of WO1999020091A3 publication Critical patent/WO1999020091A3/fr
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
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H05K7/20154—Heat dissipaters coupled to components
    • 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
    • H05K7/1401—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means
    • H05K7/1402—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards
    • H05K7/1409—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards by lever-type mechanisms

Definitions

  • the invention relates to a carrier for electronic assemblies according to the preamble of claim 1.
  • a carrier of the type mentioned at the outset is used in particular in data processing systems and personal computers in order to be able to easily replace electronic assemblies such as processor units, memory units or the like.
  • a receptacle is formed in the housing of the data processing system or the personal computer, into which the carrier plate of the carrier can be inserted along guide elements, for example guide rails, guide strips or also guide grooves.
  • guide elements for example guide rails, guide strips or also guide grooves.
  • a blower in the housing of the data processing system or the personal computer, with which the heated air is conveyed out of the housing and ambient air is drawn into the housing to cool the electronic assemblies. It is also known to arrange a fan in the immediate vicinity of the electronic assembly, such as a microprocessor, with which the electronic assembly is constantly cooled.
  • blowers or fans there is a risk that they will fail and the electronic assemblies will no longer be adequately cooled.
  • the air cooling is provided with several in one housing. closed assemblies insufficient.
  • the invention has for its object to provide a carrier of the type mentioned, which ensures sufficient cooling of the electronic assembly.
  • the carrier plate of the carrier serves as a heat sink, which is thermally connected to the electronic assembly.
  • a large part of the amount of heat generated by the electronic assembly is continuously absorbed by the carrier plate and released into the environment.
  • the carrier plate due to its large volume compared to the electronic assembly, is able to store large amounts of heat, which it gradually dissipates to the environment. In this way, a constant cooling of the electronic assembly is ensured by the carrier plate of the carrier designed as a heat sink.
  • Multi-pole data plugs or plug strips which are equipped with a corresponding number of contact points for the subassemblies, are usually used as plugs and mating plugs for connecting the electronic assemblies fastened on the carrier plate to the electronic assemblies arranged in the data processing system or the personal computer. Therefore, when inserting the carrier plate into the receptacle, it must be ensured that the plug and mating connector are properly connected to one another so that the respectively assigned contact points of the plug and mating connector touch in an electrically conductive manner. With the usual multi-pin plugs, considerable forces are required to produce and also to disconnect this electrical connection.
  • the insert according to the invention now has a relatively large volume and a relatively large mass because of the carrier plate designed as a heat sink, there is a risk that the carrier plate will jam when inserted and pulled out, and that the very sensitive and tight contact elements on the plugs will thereby become jammed or mating connectors are bent. This not only affects the electrical connection but also prevents the carrier from being reinserted into the device holder. This difficulty is solved by the locking elements provided according to the invention, which at the same time serve as an insertion or removal aid.
  • the carrier plate In order to further increase the amount of heat to be given off by the carrier plate, it is proposed to enlarge the surface of the carrier plate by providing several vertically projecting cooling elements which are formed integrally with the carrier plate on at least one of its flat sides. A plurality of cooling pins which are evenly spaced from one another are suitable as cooling elements. The use of cooling fins is also conceivable.
  • the carrier plate In order to ensure a sufficiently high heat dissipation, it is also proposed to produce the carrier plate from a material whose thermal conductivity ⁇ is in a range from 150 W / mK to 400 W / mK. Suitable materials for the carrier plate are, for example, duralumin, aluminum or copper and copper alloys.
  • the locking elements pivoted into the release position rest against the stop, so that the connector is held at a defined distance from the mating connector.
  • the locking elements By pivoting the locking elements from the release position into the locking position, they come along the locking grooves inclined to the guide direction in engagement.
  • the locking elements are held in a fixed position relative to the locking grooves in the guide direction.
  • the relative distance between the axis and the locking elements is shortened when pivoting due to the eccentric bearing in the guide direction.
  • the carrier plate with its connector is displaced in the direction of the mating connector, the connector with the mating connector is connected.
  • the locking elements are pivoted into the release position.
  • the locking elements are supported on the one hand in the locking grooves, ie have a fixed position to them, and on the other hand the relative distance between the locking elements and the axis increases as seen in the guide direction.
  • the carrier plate is moved away from the mating connector and the connection between the connector and mating connector is released in a defined manner.
  • the angle at which the locking groove is inclined to the guide direction is preferably in a range from 75 to 105 °. Due to the steep course of the locking grooves as seen in the guide direction, the respective locking element can be securely supported in the locking groove assigned to it during the locking and unlocking of the carrier plate without slipping along the locking groove and thereby tilting the carrier plate in the holder. An angle of 90 ° has proven to be particularly advantageous.
  • the distances between the locking elements and the axis preferably correspond to the plug-in path of the plug and the mating plug.
  • the locking grooves face each other and are formed on two opposite side surfaces of the receptacle.
  • the locking elements only have to be pivoted into the release position immediately before they rest on the stops.
  • a U-shaped handle with its two legs is rotatably mounted on the axis on the carrier plate. Each leg protrudes beyond the pivot point and carries the locking element which projects outwards at its free end.
  • the handle serves on the one hand to carry the carrier plate, and on the other hand it facilitates the insertion of the carrier plate into and the removal of the carrier plate from the receptacle. To lock or unlock the U-shaped handle from the release order swiveled into the locking position or from the locking position into the release position.
  • a pin is preferably used as the locking element.
  • This pin can be coated on its outer surface with a resistant, particularly slidable plastic such as PTFE in order to facilitate locking and unlocking the locking elements.
  • a resistant, particularly slidable plastic such as PTFE
  • At least one further assembly and at least one further connector connected to it are provided on the carrier and can be connected to a corresponding mating connector in the receptacle, it is advantageous if the connector is floatingly supported on the carrier in order to avoid any existing tolerance deviations in the positional relationship to compensate for the other connector provided on the carrier.
  • Fig. 1 is a schematic side view, in which a housing of a data processing system with a receptacle and an insertable into the receptacle
  • FIG. 2 shows a schematic top view of the housing and the carrier according to FIG. 1,
  • FIG. 3 is an enlarged schematic representation of a locking device in the unlocked state
  • Fig. 4 is an enlarged schematic representation of the locking device according to Fig. 3 in the locked state
  • Fig. 5 is a rear perspective view of the housing in an exploded view.
  • a housing 10 of a data processing system 12 is shown in a sectional view, in which peripheral devices 14, such as e.g. Magnetic disk drives, and a power supply device 15 are housed.
  • peripheral devices 14 such as e.g. Magnetic disk drives, and a power supply device 15 are housed.
  • a receptacle 16 for a replaceable carrier 18 is provided in the housing 10, the structure of which will be explained later.
  • the housing 10 On its front side 20 shown on the left in FIGS. 1 and 2, the housing 10 has a receiving opening 22, through which the carrier 18 can be introduced into the receptacle 16 along a predetermined guide direction (cf. arrow in FIGS. 1 and 2) .
  • the rear of the housing 10 is closed by a rear wall 24, on which, facing the receiving opening 22, three mating connectors 26, 28 and 28 'pointing into the receiving 16 are fastened.
  • the receptacle 16 has on the two side walls 30 and 32 of the housing 10 each have a cross-sectionally L-shaped guide strip 34 and 36.
  • the two guide strips 34 and 36 run parallel to one another and are arranged in the housing 10 such that the carrier 18 along the Guide strips 34 and 36 in the direction of the mating connector 26, 28 and 28 'can be inserted into the receptacle 16.
  • Near the receiving opening 22 is approximately on the side wall 30 or 32
  • a groove 38 or 39 of a locking device 40 is formed at the level of the guide bar 34 or 36. The structure of the groove 38 and the mode of operation of the locking device 40 will be explained in more detail later with reference to FIGS. 3 and 4.
  • the carrier 18 shown on the left in FIGS. 1 and 2 has a carrier plate 42 of approximately rectangular shape. On the upper side of the carrier plate 42, an electronic assembly 44 enclosed by a shielding housing 43 with a housing cover 41 and a base 45 is attached in a heat-conducting manner.
  • the carrier plate 42 is part of a one-piece heat sink 46.
  • the heat sink 46 has in the front region of the carrier plate 42 a plurality of cooling elements 46 a with a square cross section, which are arranged at a uniform distance from one another and project approximately perpendicularly from the underside of the carrier plate 42.
  • the heat sink 46 is made of an aluminum alloy, the thermal conductivity ⁇ of which is approximately 200 W / mK. This ensures that the amount of heat generated is continuously and quickly removed from the assemblies 44 and released to the environment via the cooling elements 46a.
  • the side of the housing 43 adjacent to the insertion end of the carrier plate 42 is open. In this area, an edge connector 48 is attached to the assembly 44.
  • the voltage converter printed circuit boards 49, 49 ′ are fastened to the carrier plate 42 such that they can move relative to the carrier plate 42 via a floating bearing 51. This is supposed to be tolerance differences be balanced in the positional relationship of the connector 50, 50 'to the connector 48.
  • a U-shaped handle 52 is provided on the end face of the carrier plate 42 facing away from the insertion end.
  • the U-shaped handle 52 is mounted on the side surfaces of the carrier plate 42 with its two legs 54 and 56 via pins 58 and 60 so as to be pivotable about an axis A.
  • Each leg 54 and 56 protrudes beyond the axis A and carries at its free end an outwardly projecting locking pin 62 or 64.
  • the U-shaped handle 52 is between a release position in which one through the axis A and the locking pin 62 and 64 extending plane S runs parallel to the top of the support plate 42, and pivotable to a locking position in which the plane is inclined to the top.
  • the pin 58, the locking pin 62 and the groove 38 are shown in an enlarged view, which are part of the locking device 40.
  • the pin 60 and the locking pin 64 are constructed accordingly and engage in the groove 39 on the side wall 32, which corresponds to the groove 38, so that the description thereof can also be dispensed with.
  • the edge connector 48 of the assembly 44 and the connectors 50, 50 'of the voltage converter circuit boards 49, 49' are at the same distance h from the plane S. Since the axis A, which represents the line of action of the engagement or withdrawal force exerted by the legs 54, 56 on the carrier plate 42, lies on the plane S, tilting of the carrier 18 in the vertical direction is reliably avoided. Since the legs 54, 56, as stated above, are of the same design and are connected to one another, and the grooves 38, 39 also correspond to one another, tilting of the carrier 18 is also prevented in the horizontal direction. Thus, when the carrier 18 is engaged and disengaged that or from the housing 10 keeps transverse loads away from the plug contacts of all plugs 48, 50, 50 '.
  • the locking pin 62 is attached to the leg 54 (not shown) with a predetermined eccentric distance a from the pin 58.
  • a sleeve 66 is additionally rotatably mounted on the locking pin 62 and can roll in the groove 38.
  • the groove 38 has a guide groove 38a running in the guide direction, which is open at its end facing the receiving opening 22.
  • the other end of the guide groove 38a forms a stop 38b, which in turn merges into a locking groove 38c which is inclined at an angle of 90 ° to the guide direction.
  • the carrier 18 is first inserted with its insertion end into the receiving opening 22 of the housing 10. Subsequently, the carrier 18 is pushed along the guide strips 34 and 36, which thereby engage between the cover 41 of the housing 43 and the carrier plate 42 (FIG. 5), into the receptacle 16 until the locking pin 62 pivoted into the release position the guide groove 38a of the groove 38 and the locking pin 64 engage in the guide groove of the groove 39. Subsequently, the carrier 18 is pushed into the receptacle 16 until the locking pin 62 abuts the groove 38 and the locking pin 64 abuts the groove 39.
  • the U-shaped handle 52 of the carrier 18 is then pivoted downward into the locking position.
  • the locking pin 62 comes into engagement with the locking groove 38c of the groove 38 and the locking pin 64 with the locking groove of the groove 39 and is supported on the inner wall facing the receiving opening 22 (shown on the left in FIGS. 3 and 4) of the respective locking device.
  • the locking pins 62 and 64 move upward in the locking grooves 38c.
  • the relative distance of the locking pin 62 or 64 to the pin 58 or 60 in the guide direction is reduced by the pivoting movement. Consequently, the carrier 18 is pushed into the receptacle 16 in accordance with the eccentric distance a of the locking pin 62 or 64 to the pin 58 or 60 and at the same time is locked in the grooves 38 and 39 by the locking pin 62 and 64.
  • the procedure described above is carried out in the reverse order.
  • the U-shaped handle 52 is pivoted out of the locking position into the release position.
  • the locking pins 62 and 64 are supported on the inner wall facing away from the receiving opening 22 (shown on the right in FIGS. 3 and 4) of the respective locking groove.
  • the relative distance between the locking pin 62 and 64 and the pin 58 and 60, as seen in the insertion direction, is increased again by the pivoting movement. ßert, whereby the carrier 18 is pulled by this amount from the receptacle 16.
  • the connectors 48, 50 and 50 ' are simultaneously pulled out of the mating connectors 26, 28 and 28'.
  • the U-shaped handle 52 is in its release position, the carrier 18 can be pulled out of the receptacle 16.
  • FIG. 5 shows an exploded perspective rear view of the housing 10 with the carrier 18 pushed in.
  • the rear wall 24 is folded to the side in order to make its side facing the receptacle 16 visible.
  • the mating connector 26 and below the mating connector 28, 28 ' is attached.
  • the three-part edge connector 48 in FIG. 5 of the electronic assembly 44 is inserted into the mating connector 28, the connector 50 of the voltage converter circuit board 49 into the mating connector 28 and the connector 50 'of the voltage converter circuit board 49 'inserted into the mating connector 28'.
  • Each voltage converter circuit board 49; 49 ' is electrical via its connector 50; 50 ', the mating connector 28; 28 'and lines (not shown) on the rear wall 24 are connected to the power supply device 15. From there, a voltage of a first voltage value is fed to it, which is converted into a supply voltage of a second voltage value required by the electronic assembly 44 in a voltage converter circuit which is known per se and is therefore not further explained.
  • the supply voltage is supplied to the electronic assembly 44 via the further connector 50; 50 ', further lines on the rear wall 24, the further mating connector 28; 28 'and the mating connector 26 supplied.
  • the arrangement described so far has the advantage that no connecting lines between the electronic assembly 44 located on one side of support plate 42 and voltage converter printed circuit boards 49, 49 'located on the other side of support plate 42 must be provided.
  • Another advantage, particularly when using several electronic assemblies 42 in a data processing system 12, is that each of these assemblies is assigned its own voltage converter. When an electronic assembly 44 is replaced, it is replaced together with its voltage converter.
  • Fig. 5 shows that the mating connector 28, 28 'centering pins 70 are arranged on the rear wall 24 on both sides. These are aligned with centering recesses 68 in the side walls of the plugs 50, 50 '.
  • Tabs 72 provided with a threaded hole 74 are formed on the side walls 30, 32 of the receptacle.
  • the threaded holes 74 are aligned with fastening holes 76 in the rear wall 24, through which the rear wall 24 is screwed to the receptacle 16.
  • openings 78 which lie opposite one another, are cut out of the side walls 30, 32.
  • a blower (not shown) generates an air flow L which is passed through the openings and sweeps around the cooling elements 46a and over the voltage converter circuit boards 49, 49 'and thus ensures good cooling of the entire carrier 18.
  • the air duct transverse to the insertion direction of the carrier 18 has the advantage that the fan does not have to be removed when changing a carrier 18.
  • the guide strips 34, 36 are integrally formed on a sheet metal plate 80, which the space above the carrier 18 shields against the latter.
  • the sheet metal plate 80 is used for air guidance in a room above the shown on for another carrier, even if the carrier 18 is not inserted into the receptacle 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mounting Of Printed Circuit Boards And The Like (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

La présente invention concerne un support (18) de modules électroniques (44). Le support proposé (18) comprend une plaque support (42) à laquelle est fixé le module électronique (44). Ladite plaque support (42) s'insère dans un réceptacle (16) le long d'éléments de guidage (34 et 36) et sert de corps de refroidissement pour dissiper la chaleur générée par le module électronique (44). Une fois insérée, la plaque support est verrouillée au moyen d'éléments de verrouillage ayant aussi pour fonction de faciliter le retrait et l'insertion.
PCT/DE1998/002978 1997-10-13 1998-10-08 Support de modules electroniques Ceased WO1999020091A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19745220 1997-10-13
DE19745220.5 1997-10-13

Publications (2)

Publication Number Publication Date
WO1999020091A2 true WO1999020091A2 (fr) 1999-04-22
WO1999020091A3 WO1999020091A3 (fr) 1999-07-15

Family

ID=7845431

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/002978 Ceased WO1999020091A2 (fr) 1997-10-13 1998-10-08 Support de modules electroniques

Country Status (1)

Country Link
WO (1) WO1999020091A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4080266A1 (fr) * 2021-04-23 2022-10-26 Leica Microsystems CMS GmbH Logement de composants pour un appareil d'imagerie de laboratoire

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4772999A (en) * 1986-12-16 1988-09-20 Merlin Gerin Static converter, especially for an uninterruptible electrical power supply system
US4931907A (en) * 1989-03-30 1990-06-05 Tandem Computers Incorporated Electric module latch assembly
DE29505578U1 (de) * 1995-03-31 1995-06-01 Chen, Teng-Chun, Hsi Chih, Taipeh Montagekasten vom Schubladentyp für ein Festplattenlaufwerk
US5654873A (en) * 1996-01-29 1997-08-05 Silicon Graphics, Inc. Single connector attachment drive sled assembly having light pipe coupled to a rail

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4080266A1 (fr) * 2021-04-23 2022-10-26 Leica Microsystems CMS GmbH Logement de composants pour un appareil d'imagerie de laboratoire

Also Published As

Publication number Publication date
WO1999020091A3 (fr) 1999-07-15

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