WO2000004810A1 - Fixation pour circuit imprime a force d'insertion nulle - Google Patents

Fixation pour circuit imprime a force d'insertion nulle Download PDF

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Publication number
WO2000004810A1
WO2000004810A1 PCT/US1999/014001 US9914001W WO0004810A1 WO 2000004810 A1 WO2000004810 A1 WO 2000004810A1 US 9914001 W US9914001 W US 9914001W WO 0004810 A1 WO0004810 A1 WO 0004810A1
Authority
WO
WIPO (PCT)
Prior art keywords
board
clamp member
retainer assembly
wedge actuator
chassis member
Prior art date
Application number
PCT/US1999/014001
Other languages
English (en)
Inventor
Fred Guerrero
Tom Kao
Peter Chow
Original Assignee
Cts Corporation
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 Cts Corporation filed Critical Cts Corporation
Priority to AU48269/99A priority Critical patent/AU4826999A/en
Publication of WO2000004810A1 publication Critical patent/WO2000004810A1/fr

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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/82—Coupling devices connected with low or zero insertion force
    • H01R12/85—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures
    • H01R12/89—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures acting manually by moving connector housing parts linearly, e.g. slider
    • 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
    • H05K7/1404—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means for securing or extracting printed circuit boards by edge clamping, e.g. wedges

Definitions

  • the invention relates in general to board retainers and, in particular, to a zero insertion force circuit board retainer assembly which requires no tools to actuate.
  • the devices of these prior patents generally required precision machined parts to maintain uniform heat dissipation characteristics between the printed circuit board and the retainer.
  • the present invention comprises a zero insertion force board retainer assembly adapted to being mounted to a rack in an electronic chassis and the like to facilitate the quick and easy insertion and extraction of boards and the like, without the use of tools.
  • the retainer assembly can be manipulated manually by an operator. The operator manually moves a latch member between clamped and undamped configurations. The latch member is mounted to and a part of the retainer assembly.
  • the present invention contemplates a retainer assembly which includes, among other things, a chassis member, or the like, which is intended to be permanently mounted to a cold wall or other supporting surface, and is configured to receive the edge of a planar object.
  • a chassis member Slidably mounted within the chassis member is a clamp member which is adapted to be slidably moved between clamped and undamped configurations with respect to the margin of a board which is received in the chassis member.
  • Such movement is controlled by a wedge actuator or latch member which is pivotally and permanently mounted to the retainer assembly.
  • At least one of the chassis or clamp members includes resilient contact elements which, when activated by the movement of the clamp member, react against biasing elements on the opposed structure so as to resiliently engage the edge of a board.
  • the necessary resilience can be provided by either or both of the contact elements or the biasing elements.
  • one of the contact or biasing elements is substantially rigidly mounted and the other flexes as it is moved wedgedly over it.
  • Suitable resilience is provided, for example, by forming one or both of the contact and biasing elements as leaf spring members.
  • the components of the retainer assembly are preferably formed from stamped sheets or plates of metal. The design is such that precision machining of the parts is unnecessary, and simple sheet metal stamping and forming operations are sufficient. The wider tolerances which are inevitably present in the stamped and formed retainer assembly according to the present invention are accommodated by a relatively wide range of deflection which is provided by the resilient elements.
  • the retainer assembly generally comprises a chassis member which can be mounted to any rigid structure, a clamp member which is slidably received in a channel in the chassis member, and a wedge actuator pivotally attached to at least one of the clamp member or the chassis member.
  • the wedge actuator acts to move the clamp member relative to the chassis member when it is rotated between locked and unlocked positions.
  • the chassis member is, for example, a generally U-shaped structure having two generally parallel opposed sides and a base portion.
  • the open side of the generally U-shaped channel which is defined by the U-shaped chassis member is adapted to receive the edge of a generally planar object.
  • One such opposed side preferably acts as a circuit board clamping surface.
  • the chassis member also includes, for example, bearing tabs which are generally positioned at a fixed location between the opposed sides, and can extend, for example, from the central or base portion of the generally U-shaped structure.
  • the preferably fixed bearing tabs are generally positioned so as to wedgedly co-act with resilient spring elements which are carried by the clamp member.
  • the wedge actuator When the wedge actuator is rotated from its unlocked or undamped position to its locked or clamped position, the clamp member slides relative to the chassis member generally within the generally U-shaped channel so as to cause the fixed bearing tabs to act wedgedly against the resilient spring elements.
  • the resilient spring elements are forced by the wedging action toward one of the opposed sides and into resilient engagement with the edge of a planar object which is received within the generally U-shaped channel.
  • the planar object for example, a circuit board
  • the edge of the planar object is released by moving the wedge actuator from the locked to the unlocked position. This causes the clamp member to move slidably relative to the chassis member.
  • the resilient spring fingers are substantially withdrawn from wedging engagement with the bearing tabs by the movement of the clamp member.
  • the edge of the circuit board is thus released.
  • the wedge actuator or latch member is preferably permanently mounted to an end of the retainer assembly so that it can not be misplaced or fall into the electronic equipment.
  • the wedge actuator generally includes an elongated arm which provides sufficient area for the operator's fingers to manipulate the actuator between the locked and unlocked positions.
  • the wedge actuator is generally pivotally mounted to the chassis member and acts on the clamp member through, for example, an offset pivotal connection or a cam surface engaged by a surface of the clamp member, to cause the clamp member and bearing tabs to wedgedly co-act.
  • the clamp member When assembled, the clamp member is, for example, slidably trapped within a channel which is conveniently defined, for example, by tabs or flaps which are partially incised from but still unitary with the chassis member, and bent to form a channel with one of the opposed sides of the chassis member.
  • the wedge actuator can be pivotally installed at either a right or left hand end of the chassis member or clamp body.
  • the wedge actuator is also pivotally attached to either the right or left hand end of the clamp member, as desired, at a location which is offset from the pivotal connection to the chassis member.
  • the travel or throw of the clamp member relative to the chassis member is determined by the amount of offset between the two pivotal connections.
  • the wedge actuator, for one embodiment of the pivotal connection includes an additional pin which engages a slot provided in either end of the clamp member to provide the pivotal movement necessary to bias the resilient spring members against the board.
  • the configuration of the components are all the same for either the right or left handed embodiments.
  • the only structural difference between the left and right handed embodiments is the location of the wedge actuator.
  • the size of the bearing tabs are minimized to increase the surface area of the mounting surface of the chassis member body and thus optimize the transfer of heat from the board to the object to which the assembly is mounted.
  • Each part of the present invention is simply made by stamping and bending sheet material into the desired configuration, and assembly is completed by pivotally and permanently mounting the wedge actuator to the chassis member.
  • the permanent mounting of the wedge actuator also serves to hold the clamp member permanently assembled with the chassis member.
  • the present invention provides its benefits across a broad spectrum of zero insertion force board retainers.
  • Fig. l is a perspective view of a first preferred embodiment of the invention with a circuit board clamped in place.
  • Fig. 2 is a partially broken perspective view of the chassis member or clamp body of the preferred embodiment shown in Fig. 1..
  • Fig. 3 is a section view through the chassis member or clamp body taken along line 3-3 in Fig. 2
  • Fig. 4 is a perspective view of a latch member or wedge actuator according to the preferred embodiment shown in Fig. 1.
  • Fig. 5 is partial plan view of a wedge actuator taken along line 5-5 in Fig. 4, showing the profile of a locking cam surface in greater detail.
  • Fig. 6 is a perspective view of a clamp member or spring clamp of the preferred embodiment shown in Fig. 1.
  • Fig. 7 is a perspective view of another preferred embodiment of the present invention.
  • Fig. 8 is a perspective view of a clamp member or spring clamp of the preferred embodiment shown in Fig. 7.
  • Fig. 9 is a perspective view of a chassis member or clamp body of the preferred embodiment shown in Fig. 7.
  • Fig. 10 is a section view through the chassis member or clamp body taken along line 10-10 in Fig. 9
  • Fig. 11 is an exploded perspective view of the wedge actuator, chassis member, and spring clamp, of the preferred embodiment shown in Fig. 7.
  • FIG. 1 A first preferred embodiment is shown in Figs. 1 through 6, and a second preferred embodiment is shown in Figs. 7 through 11.
  • a board retainer assembly or quick release circuit board retainer assembly shown gripping an edge of a circuit board 12.
  • An elongated chassis member or clamp body 14 has a first opposed side 16 and a second opposed side 18 which extend generally parallel to each another.
  • a margin of circuit board 12 is clamped against the circuit board clamping surface 20 on the first opposed side 16.
  • the latch member or wedge actuator 22, shown in locked position, is pivotally engaged with the second opposed side 18 and the guide wall 24 with a through pin 26. Shown in phantom line is the wedge actuator 22 in the unlocked position.
  • a clamp member 28 is slidably confined within the channel 30 of the chassis member 14.
  • the channel 30 is defined by the adjacent wall of the second opposed side 18 and bent up tabs or flaps, for example, the guide wall 24 and the bearing wall 44.
  • the clamp member 28 has at least one cantilever mounted spring element or finger 32 which is wedgedly associated with a biasing element or bearing tab 34.
  • the bearing tab 34 is formed by partial incision from, and is therefore substantially rigidly unitary with, the chassis member 14.
  • the spring finger 32 returns to its non-deflected shape in which the circuit board 12 can be freely removed.
  • the portion of the spring finger which contacts the margin of the circuit board is generally approximately flat, at least under tension in contact with the board.
  • the use of a contact area spreads the load so that the margin of the circuit board is not damaged by the concentration of the clamping force on a line or point.
  • the larger frictional area of engagement promotes the security of the engagement between the retainer assembly and the circuit board, and enhances heat transfer.
  • Figs. 2 and 3 show the chassis member 14 in greater detail.
  • the second opposed side 18 is shown mostly removed in Fig.
  • the chassis member 14 is formed, for example, from a single sheet material, such as resilient steel.
  • the first and second opposed sides, 16 and 18, are formed by bending the sheet material upward to form a generally U- shaped channel indicated generally at 40.
  • the guide wall 24 is formed by incising a portion of the sheet material along all but one edge and bending the tab which is thus formed into a parallel relationship with the adjacent face of the second opposed side 18.
  • the wedge actuator mounting holes 41 and 43 are respectively line drilled into the guide wall 24 and the second opposed side 18.
  • the bearing tab 34 is formed by incising a pattern 42 in the bottom wall 21 of chassis member 14 and bending the bearing tab 34 to the position and configuration shown.
  • the bearing tab 34 is formed in three bending operations.
  • the first bend is made upward and generally at 90 degrees which establishes the bearing wall 44 that is generally parallel with the first opposed side 18.
  • the second bend is made at generally 90 degrees to establish the bearing tab 34, shown in Figs. 1-3.
  • the bearing tab 34 extends generally perpendicular to the first opposed side 18.
  • the third bend of 90 degrees establishes the cage element 48.
  • the inside surface of the first opposed side 18, the guide wall 24, the bearing wall 44, and the other incised tabs cooperate to define the channel 30 wherein the clamp member 28 is received when the retainer assembly is completely assembled.
  • bearing wall 44, guide wall 24, cage elements 48 and wedge actuator 22 cooperate to slidably confine the clamp member 28 within the channel 30.
  • the retainer mounting holes 50 are provided to allow fixed mounting of the board retainer assembly 10 to any suitable rack or frame, preferably in heat exchanging relationship.
  • the wedge actuator 22 of the first preferred embodiment is shown in Figs. 4 and 5 in greater detail.
  • the wedge actuator 22 is formed from sheet material, such as resilient steel.
  • a suitable material providing successful results, for example, is .025 inch thick cold rolled steel per AISI-C- 1010.
  • the wedge actuator 22 functions as an over the center detent mechanism for the board retainer assembly.
  • the wedge actuator 22 has a elongated arm 52 with a outwardly bent handle 54 for providing a sufficient area for an operator's fingers to engage and move the wedge actuator between the locked and unlocked positions.
  • the wedge actuator 22 includes the lock cam surface 38 adjacent to the bottom edge 60 of the elongated arm 52.
  • the lock cam surface 38 includes a arcuate surface 56 and a flat surface 58.
  • the arcuate surface 56 is semi-circular and has a radial center 66 which is offset from the center 64 of the pivot hole 62.
  • the amount of this offset establishes the extent of the generally linear excursion which the clamp member 28 will experience when the wedge actuator 22 is moved between the unlocked and locked positions.
  • the amount of earning movement which the clamp member or spring clamp 28 will undertake is established by the amount of this offset. Locking is accomplished, for example, by locating radial center 66 relative to center 64 so that the wedge actuator 22 is in a slightly over center position in the fully locked configuration.
  • the clamp member 28 of the first preferred embodiment is shown in greater detail in Fig. 6.
  • the clamp member 28 is formed from sheet material, such as, for example, resilient steel.
  • the spring fingers 32 are a generally J-shaped resilient spring made from, for example, 301 stainless steel 0.025 inch thick.
  • the spring fingers 32 are formed, for example, by incising along all but one edge of the clamp member 28, and deforming them to the desired configuration. In this embodiment a generally J-shaped configuration is desired, however other configurations are contemplated as well.
  • the clamp member 28 has a flat surface 70 which slidably engages one internal wall of channel 30 of the chassis member 14 when the retainer is completely assembled.
  • clamp member 28 engages the opposing wall of channel 30.
  • each spring finger 32 there is a corresponding bearing tab 34 in the chassis member 14.
  • Two corresponding sets of spring fingers and bearing tabs are illustrated. As those skilled in the art will appreciate, there can be one, or any number of, corresponding sets of spring fingers and bearing tabs without departing from the true scope and spirit of the present invention. As those skilled in the art will appreciate, the number of corresponding sets of spring fingers and bearing tabs will depend on the application, and more particularly on the length of the circuit board or planar object that is desired to be retained.
  • the first embodiment illustrated in Fig. 1 is assembled by first placing the clamp member 28 into the channel 30 of the chassis member 14.
  • the wedge actuator 22 is inserted between the guide wall 24 and the second opposed side 18 in the unlocked position which is shown in phantom line.
  • the through pin 26 is inserted through the mounting hole 43 of the second opposed side 18, the pivot hole 62 of the actuator 22, and the mounting hole 41 of the guide wall 24.
  • the through pin 26 is then fixed in place by deforming both ends against the guide wall 24 and the second opposed side 18, respectively.
  • the clamp member 28 is slidably retrained in the channel 30 by the bearing tabs 34, the cage elements 48, the bearing walls 44, the second opposed side 18, and the wedge actuator 22.
  • the dimensions of the chassis member 14, the actuator 22, and the clamp member 28 are selected so that, to retain a desired circuit board of a particular thickness, the interference tolerance between the spring fingers 32 and circuit board clamping surface 20 in the actuated configuration is, for example, between 0.005 to 0.020 inches.
  • the actuator has an offset between the center 64 of the pivot hole 62 and the radial center 66 of the curved surface 58 of, for example, approximately 0.10 to 0.15 inches.
  • FIG. 7 a second preferred embodiment of the present invention is shown wherein like reference numerals designate corresponding parts with the first preferred embodiment of Figs 1-6.
  • Fig. 7 there is illustrated generally at 68 a universal board retainer assembly or universal quick release circuit board retainer assembly wherein the latch member or wedge actuator 22 can be mounted at either the right or left ends of the assembly, generally indicated at 72 and 74, respectively.
  • a significant feature of this embodiment is that the same latch member 22 can be mounted at either end of the assembly, 72 or 74, without effecting the ability of the assembly to retain a circuit board. This feature eliminates the need for special right and left hand tooling which lowers the costs associated with mass producing the assemblies.
  • the openings or patterns 42 left in the chassis member in the second preferred embodiment are significantly reduced in size compared to the corresponding openings or patterns 42 left in the first preferred embodiment. This increases the rate at which heat can be conducted through the assembly of the second preferred embodiment into the supporting structure as compared to the first preferred embodiment.
  • the second preferred embodiment of the present invention is particularly well suited to applications which require heat to be transferred from the retained board to an object to which the assembly is attached.
  • the chassis member or clamp body 14, the clamp member or spring clamp 28, and latch member or wedge actuator 22 are formed in substantially the same manner as discussed with reference to the embodiment of Figs 1-6, that is, by making incisions in, for example, a 0.025 inch thick stainless steel sheet and bending the sheet into the configurations shown.
  • the clamp member 28 has cantilevered spring elements or fingers 32 formed by incising portions of the sheet material and bending them into a generally V-shaped configuration.
  • the V-shaped configuration of each spring finger 32 provides it with two sides, 76 and 78, which are bent to establish a substantially 90 degree angle therebetween. Each side thus extends at a substantially 45 degree angle with respect to the flat surface 70 of the clamp member 28.
  • each side, 76 and 78, with respect to the flat surface 70 be substantially the same, that is the sides are generally symmetrical with respect to the biasing element. This is desirous in order to assure that the amount of deflection of the spring finger is substantially the same without regard to whether the latch member is mounted on the right end 72 or the left end 74.
  • the chassis member 14 of the second preferred embodiment is shown.
  • the bearing tabs 34 are formed by making incisions in the bottom portion 80 of the chassis member 14. Minimizing the size of the bearing tabs reduces the size of the opening(s) or pattern(s) 42, which in turn improves the heat transfer characteristics of the universal assembly 68.
  • Each bearing tab 34 has a protruding extension 82 for engaging the upper edges 76 and 78 of a respective spring finger.
  • the protruding extensions 82 slidably confine the spring clamp 28 within the channel 30 (see particularly Figs. 7 and 10) .
  • the channel 30 of the chassis member 14 is established between the inner face 19 of second opposed side 18 and each retaining edge 84 of each bearing tab 34 (see particularly Figs. 9 and 10) .
  • the latch member 22 is shown attached to the right end 72 of the assembly and in the locked position.
  • the clamp member 28 is slidably moved through channel 30 from the right towards the left end of the assembly and the side 76 of the spring fingers wedgedly engage fixed biasing member 86 of the bearing tabs causing the cantilevered spring fingers to deflect toward the circuit board clamping surface 20.
  • the clamp member would be slidably moved from the left toward the right side of the assembly and sides 78 would engage fixed biasing member 86 causing the spring fingers to deflect toward the clamping surface 20.
  • the universal board retainer assembly of the second embodiment can firmly and properly grasp a circuit board when the latch member is attached to either side of the assembly.
  • the second preferred embodiment accomplishes the linear movement of the clamp member 28 by pivotally pinning the clamp member 28 to the wedge actuator 22 by means of a pin 88.
  • the pin 88 extends through the first and second aligned holes, 90 and 92, in the latch member 22. Within central portion 94 of the latch member the pin 88 engages a slot 96 provided in the end of the clamp member 28.
  • the clamp member 28 and wedge actuator 22 are then installed within the chassis member 14 and pin 26 is installed to pivotally capture the assembly.
  • the pin 26 is inserted through line drilled holes 102 of the chassis member 14 and through line drilled holes 104 of the latch member.
  • the pin is then fixed in place, for example, by deforming both its ends against holes 102 of the chassis member 14.
  • cam surface locking mechanism of the first preferred embodiment has been replaced with the pin 88 engaging the slot 96 of the end of the clamp member 28 to perform the same locking/unlocking motion of the assembly. Locking is further accomplished in this embodiment, for example, by providing two outward protrusions 98 on opposed sides of the latch member 22 that snappedly engage holes 100 in the end of the chassis member when the latch member is brought to the locked position.
  • Those skilled in the art will realize that there are various means available for converting the rotary motion of the wedge actuator 22 into linear movement of the clamp member 28, only two of which have been described in detail herein.
  • the contact elements comprise cantilever mounted leaf springs resiliently carried by the clamp member, they are resiliently deflected by wedging contact with substantially rigid biasing elements mounted to the chassis member so that the generally flat faces of the contact elements engage with and clamp the margin or edge of the board 12 against surface 20.
  • substantially rigid biasing elements mounted to the chassis member so that the generally flat faces of the contact elements engage with and clamp the margin or edge of the board 12 against surface 20.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mounting Of Printed Circuit Boards And The Like (AREA)

Abstract

La présente invention concerne un ensemble de fixation pour circuit imprimé qui comprend un élément de châssis, un élément de pince fixé coulissant dans l'élément de châssis, un actionneur à coin, un élément de sollicitation monté fixe dans l'élément de châssis et un élément de contact pour circuit maintenu par l'élément de pince entre une configuration de serrage et une configuration de desserrage. L'élément de sollicitation et l'élément de contact collaborent par effet de coin et de façon élastique de telle sorte qu'en position de serrage, l'élément de contact est plaqué de façon souple et par effet de coin contre le bord du circuit encastré dans l'ensemble de fixation. L'actionneur à coin fait passer l'élément de fixation selon un mouvement généralement linéaire dans l'élément de châssis entre les positions de serrage et de desserrage. Cet actionneur est monté pivotant entre une position de blocage dans laquelle l'élément de contact est plaqué souple contre le circuit, et une position de déblocage dans laquelle l'élément de contact est en configuration de desserrage.
PCT/US1999/014001 1998-07-23 1999-06-21 Fixation pour circuit imprime a force d'insertion nulle WO2000004810A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU48269/99A AU4826999A (en) 1998-07-23 1999-06-21 Zero insertion force circuit board retainer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12179598A 1998-07-23 1998-07-23
US09/121,795 1998-07-23

Publications (1)

Publication Number Publication Date
WO2000004810A1 true WO2000004810A1 (fr) 2000-02-03

Family

ID=22398840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/014001 WO2000004810A1 (fr) 1998-07-23 1999-06-21 Fixation pour circuit imprime a force d'insertion nulle

Country Status (2)

Country Link
AU (1) AU4826999A (fr)
WO (1) WO2000004810A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005091691A1 (fr) * 2004-03-17 2005-09-29 Honeywell International Inc. Guide et verrouillage de carte de circuits imprimes
US8967903B1 (en) 2012-06-20 2015-03-03 General Micro Systems, Inc. Locking displaceable frame

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187648A (en) * 1991-07-18 1993-02-16 Kitagawa Industries Co., Ltd. Guide rail for a printed circuit board
US5402319A (en) * 1993-04-22 1995-03-28 Rockwell International Corporation Avionics line replaceable unit with frameless spring ramp circuit card retainer
US5467254A (en) * 1993-11-04 1995-11-14 Synoptics Communications, Inc. Supportive guide for circuit-card grounding including tracks having staggered protrusions at the proximal end of the tracks
US5533631A (en) * 1994-10-12 1996-07-09 Unitrack Industries, Inc. Composite printed circuit card guide and holding device
US5542854A (en) * 1995-01-17 1996-08-06 Molex Incorporated Edge card connector with alignment means
US5796593A (en) * 1996-01-25 1998-08-18 Dell Usa, L.P. Planar mounts capable of mounting planars of varying thickness
US5883784A (en) * 1997-04-04 1999-03-16 Northern Telecom Limited Mounting structure for heat conductively supporting a planar electric device
US5889656A (en) * 1997-05-23 1999-03-30 Micronics Computers Inc. Pivotal device for retaining an add-on module on a mother board

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187648A (en) * 1991-07-18 1993-02-16 Kitagawa Industries Co., Ltd. Guide rail for a printed circuit board
US5402319A (en) * 1993-04-22 1995-03-28 Rockwell International Corporation Avionics line replaceable unit with frameless spring ramp circuit card retainer
US5467254A (en) * 1993-11-04 1995-11-14 Synoptics Communications, Inc. Supportive guide for circuit-card grounding including tracks having staggered protrusions at the proximal end of the tracks
US5533631A (en) * 1994-10-12 1996-07-09 Unitrack Industries, Inc. Composite printed circuit card guide and holding device
US5542854A (en) * 1995-01-17 1996-08-06 Molex Incorporated Edge card connector with alignment means
US5796593A (en) * 1996-01-25 1998-08-18 Dell Usa, L.P. Planar mounts capable of mounting planars of varying thickness
US5883784A (en) * 1997-04-04 1999-03-16 Northern Telecom Limited Mounting structure for heat conductively supporting a planar electric device
US5889656A (en) * 1997-05-23 1999-03-30 Micronics Computers Inc. Pivotal device for retaining an add-on module on a mother board

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005091691A1 (fr) * 2004-03-17 2005-09-29 Honeywell International Inc. Guide et verrouillage de carte de circuits imprimes
US7046506B2 (en) 2004-03-17 2006-05-16 Honeywell International Inc. Circuit board card guide and lock
US8967903B1 (en) 2012-06-20 2015-03-03 General Micro Systems, Inc. Locking displaceable frame

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Publication number Publication date
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