WO1998054939A1 - Systeme de fixation d'un ensemble a une surface - Google Patents

Systeme de fixation d'un ensemble a une surface Download PDF

Info

Publication number
WO1998054939A1
WO1998054939A1 PCT/US1998/010192 US9810192W WO9854939A1 WO 1998054939 A1 WO1998054939 A1 WO 1998054939A1 US 9810192 W US9810192 W US 9810192W WO 9854939 A1 WO9854939 A1 WO 9854939A1
Authority
WO
WIPO (PCT)
Prior art keywords
aperture
fastener
assembly
board
annular collar
Prior art date
Application number
PCT/US1998/010192
Other languages
English (en)
Inventor
James P. Scholz
E. Scott Martin
Original Assignee
The Whitaker 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 The Whitaker Corporation filed Critical The Whitaker Corporation
Priority to AU75787/98A priority Critical patent/AU7578798A/en
Publication of WO1998054939A1 publication Critical patent/WO1998054939A1/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
    • H05K7/1438—Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
    • H05K7/1452—Mounting of connectors; Switching; Reinforcing of back panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/002—Measures against loss of bolts, nuts or pins

Definitions

  • the present invention relates to the field of fastening and more particularly to assemblies mountable to a surface.
  • circuit boards are utilized to which are mounted numerous electrical and electronic components.
  • Smaller circuit cards are utilized to establish electrical connections to a larger circuit board in a manner that permits removal and disconnection, by inserting an edge of the card into a receptacle connector mounted on the board and containing an array of contacts connected to circuits of the board; contact sections of the contacts are exposed within a card- receiving cavity of the connector that engage circuit pads on the card surfaces upon card insertion. It has become useful to secure certain cards within larger modules so that components mounted on the card are protected by the module covers during handling.
  • Such modules need to be accurately guided during mating with the receptacle connector so that the leading end of the enclosed card is accurately received into the card-receiving cavity of the connector, since the module covers inhibit accurate visual alignment of the card with the cavity.
  • elongate guide members projecting from the board from ends of receptacle connectors to facilitate mating in similar situations.
  • Such elongate guide assemblies may be mounted on the circuit board such as with bolts of the circuit board onto which are threadable nut fasteners of the guide assemblies that are rotatably held to the guide assemblies.
  • An assembly is mountable on the circuit board by nut fasteners that are held captive to the assembly in a manner permitting rotation of the nut fasteners for threading onto upstanding bolts of the circuit board.
  • the nut fasteners are integral members that are disposed in apertures of mounting flanges of the assembly into which the bolts are received, and the apertures have a height permitting vertical movement of the nut fasteners to move from an unthreaded state to a fully threaded state.
  • Annular collars at bottom ends of the nut fasteners each have an enlarged diameter so that the collar abuts a constriction at the top of the aperture to hold the nut fastener in the aperture.
  • the constriction is defined by latching projections at the upper entrance to each aperture, at least one of which is disposed on the free end of a latch arm that deflects outwardly as the nut fastener is urged downwardly into the aperture and the collar rides over the latching projections.
  • the assembly may be a guide assembly to guide mating of a card module to a receptacle connector of the circuit board.
  • FIGURE 1 is an isometric view of the present invention with the fasteners exploded from the assembly;
  • FIGURES 2 and 3 are enlarged isometric views of a portion of the assembly showing a fastener being assembled thereto; and
  • FIGURE 4 is a cross -sectional view of the assembly with a pair of fasteners assembled thereto, unthreaded and partially threaded to respective bolts of a circuit board, respectively.
  • Guide assembly 10 having a frame section 12 and guide sections 14, with the assembly mountable to a circuit board 16 (FIG. 4) around a receptacle connector (not shown) disposed within a connector- receiving cavity 18 of frame section 12.
  • Guide sections 14 include opposed guide channels 20 along which slide side portions of a card- containing module (not shown) when the module is being moved to the connector for insertion of a card thereof into a card- receiving cavity of the receptacle connector with which the card must be aligned to become mated.
  • the guide sections may be initially separate members that are pivotably mountable to end sections of a frame member, whereby the guide sections may be pivoted to a recumbent position when a module is not mated with the receptacle connector.
  • the guide assembly is molded of plastic material such as polycarbonate resin.
  • the connector housing may be formed to include the frame and guide sections as integral portions thereof.
  • the connector may be, for example, a Slot 1 Connector sold by AMP Incorporated, Harrisburg, PA under Part Nos. 145251-1 and -2.
  • Fasteners 30,32 are utilized to secure the guide assembly to the circuit board by being threadable onto bolts 22 (FIG. 4) extending upwardly from the board 16.
  • Fasteners 30,32 are movably held captive in respective apertures 34 of mounting flanges 36 at respective ends of guide assembly 10 by a pair of opposed latch projections 38 at the upper entrances 40 to apertures 34 and by smaller diameter aperture bottoms 42 defining bolt-receiving lower entrances 44.
  • Latch projections 38 define a constriction at the upper entrances of the apertures 34 to be abutted by annular collars 46 at lower ends 48 of the fasteners.
  • One of the latch projections 38 is disposed on the free end of a latch arm 50 that is defined along an outer wall by a pair of slots 52 extending downwardly toward the board-mounting surface of the mounting flanges 36.
  • Each fastener 30,32 includes a threaded bolt-receiving hole 54 extending upwardly from lower end 48, and further includes a tool- engageable upper end 56.
  • Fasteners 30 are shown to include a hexagonal tool -receiving cavity 58 in upper end 56 cooperable with a socket wrench, while fasteners 32 are shown to include slots 60 extending downwardly from upper end 56 cooperable with a screwdriver.
  • a pair of fasteners 30a, 30b are shown held in respective apertures 34a, 34b.
  • Fastener 30a is shown in an uppermost position within aperture 34a and is unthreaded onto bolt 22a; annular collar 42a is abutting latch projections 38a.
  • Fastener 30b is shown partially threaded onto bolt 22b and has moved concomitantly downwardly along aperture 34b.
  • Bolts 22a, 22b are shown immovably affixed to circuit board 16 with threaded shafts 24a, 24b protruding upwardly through and beyond board apertures 26a, 26b, with heads 28a, 28b recessed within hexagonally shaped counterbores into the bottom surface of the board in a manner that prevents rotation of the bolts as the nut fasteners are threaded thereonto.
  • the height within the aperture within which the fastener is movable corresponds with the length of the bolt shank extending upwardly from the top surface of the circuit board, so that the bolt shank is fully received into the aperture prior to the fastener being threaded thereonto and the assembly is mountable flush onto the circuit board top surface.
  • the arrangement of the present invention provides for the guide assembly to have integral means to hold the nut fasteners captive thereto, obviating the need for additional clips or other fastening accessories, while it permits substantial vertical float of the fasteners within respective apertures to permit threading over the shafts of the circuit board bolts.

Abstract

L'invention concerne un ensemble (10) pouvant être monté sur une surface telle qu'une carte imprimée (16). Des dispositifs de fixation d'écrous (30, 32) sont enfermés dans des orifices (34) ménagés sur ledit ensemble, de manière à pivoter lorsque les dispositifs de fixation d'écrous sont enfilés sur les boulons (22) de ladite carte imprimée et se déplacent verticalement vers le bas à l'intérieur des orifices, au cours de l'enfilage. Deux ergots de verrouillage (38) permettent de maintenir les dispositifs de fixation d'écrous à l'intérieur desdits orifices (34), après l'opération de fixation. Ces ergots jouxtent des bagues annulaires (46), au niveau des extrémités inférieures des dispositifs de fixation d'écrous, l'un de ces ergots de verrouillage, situé sur l'extrémité libre d'un bras de verrouillage (50), pouvant être dévié vers l'extérieur au cours de l'insertion du dispositif de fixation dans ledit orifice.
PCT/US1998/010192 1997-05-29 1998-05-19 Systeme de fixation d'un ensemble a une surface WO1998054939A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU75787/98A AU7578798A (en) 1997-05-29 1998-05-19 System for fastening an assembly to a surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4791897P 1997-05-29 1997-05-29
US60/047,918 1997-05-29

Publications (1)

Publication Number Publication Date
WO1998054939A1 true WO1998054939A1 (fr) 1998-12-03

Family

ID=21951746

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/010192 WO1998054939A1 (fr) 1997-05-29 1998-05-19 Systeme de fixation d'un ensemble a une surface

Country Status (3)

Country Link
AU (1) AU7578798A (fr)
TW (1) TW385883U (fr)
WO (1) WO1998054939A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5993252A (en) * 1997-10-23 1999-11-30 Molex Incorporated Support assembly for board-mounted electrical appliance
EP3537548A3 (fr) * 2018-03-09 2019-12-11 Yazaki North America, Inc. Protrusions de compression limitant les vibrations

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790229A (en) * 1987-02-13 1988-12-13 Hoshino Gakki Co., Ltd. Lug nut for drum head
DE3807001A1 (de) * 1988-03-01 1989-09-14 Hubert Combe Vorrichtung zur verbindung von zwei werkstuecken
EP0474181A1 (fr) * 1990-09-04 1992-03-11 Fujitsu Limited Structure pour supporter des modules sur un fond de panier d'un appareillage électronique
US5330535A (en) * 1991-03-07 1994-07-19 Sulzer Brothers Limited Screw-nut for screwing implants together

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790229A (en) * 1987-02-13 1988-12-13 Hoshino Gakki Co., Ltd. Lug nut for drum head
DE3807001A1 (de) * 1988-03-01 1989-09-14 Hubert Combe Vorrichtung zur verbindung von zwei werkstuecken
EP0474181A1 (fr) * 1990-09-04 1992-03-11 Fujitsu Limited Structure pour supporter des modules sur un fond de panier d'un appareillage électronique
US5330535A (en) * 1991-03-07 1994-07-19 Sulzer Brothers Limited Screw-nut for screwing implants together

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5993252A (en) * 1997-10-23 1999-11-30 Molex Incorporated Support assembly for board-mounted electrical appliance
EP3537548A3 (fr) * 2018-03-09 2019-12-11 Yazaki North America, Inc. Protrusions de compression limitant les vibrations

Also Published As

Publication number Publication date
TW385883U (en) 2000-03-21
AU7578798A (en) 1998-12-30

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