WO1997020368A1 - Connecteur bnc decouple - Google Patents

Connecteur bnc decouple Download PDF

Info

Publication number
WO1997020368A1
WO1997020368A1 PCT/US1996/017438 US9617438W WO9720368A1 WO 1997020368 A1 WO1997020368 A1 WO 1997020368A1 US 9617438 W US9617438 W US 9617438W WO 9720368 A1 WO9720368 A1 WO 9720368A1
Authority
WO
WIPO (PCT)
Prior art keywords
insulative housing
tab
base
recited
pair
Prior art date
Application number
PCT/US1996/017438
Other languages
English (en)
Inventor
Michael J. Tomchak
Mark S. Caviness
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 DE69634805T priority Critical patent/DE69634805T2/de
Priority to AU76000/96A priority patent/AU7600096A/en
Priority to EP96938684A priority patent/EP1064702B1/fr
Publication of WO1997020368A1 publication Critical patent/WO1997020368A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/52—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency mounted in or to a panel or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Definitions

  • This invention is directed to an electrical connector and more particularly to an improved BNC type, panel mount electrical connector.
  • Capacitively decoupled connectors were developed several years ago as a way to reduce noise and eliminate ground loops on coaxial interconnections.
  • the high- frequency noise generated by fast rise times can cause both false triggering of circuits as well as emissions that can be radiated or conducted outside the equipment.
  • Ground loops are also a problem for networked systems . Ground loops are caused when two interconnected units are at different voltage potentials.
  • Another feature of the patented device is the inclusion therein of a voltage discharge path between the clip and the shell of the connector.
  • This feature which preferably incorporates a dielectric wafer, such as glass, mica or ceramic, in the path, protects the connector and capacitors from exposure to elevated voltages.
  • the object of this invention has been achieved by providing an improved decoupled BNC type connector for mounting to a planar electronic device, such as a printed circuit board.
  • the connector is constructed to offer direct grounding thereof to the planar electronic device and is provided with voltage surge protection.
  • the connector comprises a generally rectangular dielectric housing portion containing an insulated inner transmitting contact for engagement with the planar electronic device, an insulated conductive shell thereabout, and a pair of aligned electrical capacitor elements in contact with the shell through the housing portion.
  • the improvement lies in the use of a grounding clip having a pair of arms arranged on the housing portion to compressively engage the capacitor elements.
  • the grounding clip further includes an intermediate base between the arms and is positioned to lie between the housing portion and the planar electronic device for grounding directly thereto.
  • the housing portion includes an opening extending between the intermediate base and the shell, where the intermediate base includes a tab positioned within the opening, such as by a press fit, and spaced from the shell .
  • Figure 1 is a perspective view of a BNC type connector incorporating the improved features of the invention.
  • Figure 2 is a longitudinal sectional view of the BNC type connector illustrated in Figure 1.
  • Figure 3 is a top view of the BNC type connector illustrated in Figures 1 and 2.
  • Figure 4 is an end view of connector according to this invention.
  • Figure 5 is an enlarged transverse sectional view taken through a plane within the grounding clip, as hereinafter described.
  • Figure 6 shows an end view of the sfeamped and formed metal grounding clip used in the BNC type connector of this invention.
  • Figure 7 shows a side view of the stamped and formed metal grounding clip used in the BNC type connector of this invention.
  • Figure 8 show a bottom view of the stamped and formed metal grounding clip used in the NBC type connector of this invention.
  • FIG. 1 Considering first the overall views of Figures 1 and 2, there is shown a connector 10 having a fabricated body 12, such as by injection molding with plastic, where such body 12 comprises a forward portion 14, having a generally rectangular profile, a mid portion 16 integrally molded to the forward portion, and a rear conductive shell portion 18, a construction generally known in the art.
  • a connector 10 having a fabricated body 12, such as by injection molding with plastic, where such body 12 comprises a forward portion 14, having a generally rectangular profile, a mid portion 16 integrally molded to the forward portion, and a rear conductive shell portion 18, a construction generally known in the art.
  • the forward portion 14 and mid portion 16 include a central through cavity 20 into which the rear conductive shell portion 18 is received.
  • an external projecting key 22 of the shell portion 18 extends along a keyway 24 in the forward portion 14 extending from the end 26. Relative movement of the shell 18 is prevented by a rear facing shoulder 26 of the shell 18 that faces the end 26 and by a thin flange 28 of a rear end of the shell 18 outwardly flared, after insertion into the through cavity 20, to engage against a flared rear of the cavity 20.
  • a hollow insulative liner 30 for the shell portion 18 which extends within an axial, stepped cylindrical passage 32.
  • An external step shoulder 33 of the liner 30 engages an interior, front facing, step shoulder 34 of the shell portion 18.
  • a forward portion 36 of the liner 30 is of reduced diameter and projects concentrically into the disconnect coupling portion 38 of the shell portion 18.
  • a conductive electrical contact 40 known as a center contact, of stamped and formed metal strip extends concentrically within the liner 30 along a stepped passage 24 of the liner 30.
  • a unitary, disconnect contact portion 44 includes a hollow cylindrical electrical receptacle formed by bending the strip into a hollow cylindrical s ape.
  • An open front end 46 of the contact portion 44 faces forward and is concentrically within the liner 30.
  • An elongated portion 48 of the contact 40 extends concentrically along a reduced diameter portion 50 of the passage 24 and projects beyond an end 52 of the liner 30 to provide an electrical terminal 54, bent 90°, for pluggable receipt into a planar electronic device, such as a printed circuit board.
  • the connector 10 of this invention is a BNC type coaxial connector which has an exterior profile similar to that of known BNC type connectors.
  • the forward portion 14, as best illustrated in Figure 1 is generally of a rectangular shape, with a groove 60, or reduced cross sectional area, about the rear thereof.
  • the groove 60 is defined by the forward shoulders 62 and rearward panel stops 64.
  • the respective sides of the groove 60 are provided with a pair of axially arranged slots 66, each receiving a capacitor element 68.
  • a further slot 72 along the base 70 of the groove 60, the function of which is to receive a spark gap tab 74, as hereinafter described.
  • FIGs 6 to 8 respectively are front, side and bottom views of the grounding clip 76 for use on the connector 10 of this invention.
  • the grounding clip 76 is formed from a flat metal blank resilient spring metal, such as phosphor bronze.
  • the clip 76 includes a curvilinear yoke 78 having a base 80 and spaced apart arms 82 inclined toward one another, see Figure 6. Projecting down from the base 80 are a pair of board locks 84, each consisting of a pair of flexible legs 86 with an outwardly directed barb 88 for engagement with an appropriate grounding hole 90 (Figure 1) in the planar electronic device to which it is to be mounted.
  • the underside of the forward portion 14, aligned in the groove 60 is provided with a slot 72 which is open to the shell 18 (Fig. 5) .
  • the purpose of the slot 72 is to receive the upturned, spark gap tab 74 projecting above the base 80.
  • the free or spaced apart arms 82 are positioned along the sides of groove 60 to apply a compressive force to the pair of capacitor elements 68.
  • the clip 76 may also be assembled in the groove 60 in the absence of a corresponding capacitor element 68.
  • the present invention offers all the advantage of direct grounding of the connector to the planar electronic device to which the connector is mounted. By this approach, elimination of the grounding path through a conductive panel, there is lower inductance and improved performance.

Abstract

L'invention porte sur un connecteur électrique (10) du type BNC pouvant être monté sur une plaquette et présentant des caractéristiques de fonctionnement améliorées, du fait de la mise directe à la masse du connecteur à la plaque et d'un éclateur protégeant le connecteur contre une exposition à des tensions élevées. Une borne de mise à la masse (76) comporte un dispositif de verrouillage sur la plaquette (84), une languette d'éclateur (92) reposant (72) dans le boîtier du connecteur (12) et deux bras souples (82) agencés de manière à maintenir par compression deux éléments capacitifs (68) à l'intérieur du connecteur (10).
PCT/US1996/017438 1995-11-30 1996-10-28 Connecteur bnc decouple WO1997020368A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69634805T DE69634805T2 (de) 1995-11-30 1996-10-28 Entkoppelter bnc-verbinder
AU76000/96A AU7600096A (en) 1995-11-30 1996-10-28 Decoupled bnc connector
EP96938684A EP1064702B1 (fr) 1995-11-30 1996-10-28 Connecteur bnc decouple

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US787395P 1995-11-30 1995-11-30
US60/007,873 1995-11-30

Publications (1)

Publication Number Publication Date
WO1997020368A1 true WO1997020368A1 (fr) 1997-06-05

Family

ID=21728558

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/017438 WO1997020368A1 (fr) 1995-11-30 1996-10-28 Connecteur bnc decouple

Country Status (5)

Country Link
EP (1) EP1064702B1 (fr)
AU (1) AU7600096A (fr)
DE (1) DE69634805T2 (fr)
TW (1) TW359910B (fr)
WO (1) WO1997020368A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3035451A1 (fr) * 2014-12-18 2016-06-22 Delphi International Operations Luxembourg S.à r.l. Pince de mise à la terre pour un système d'allumage d'airbag

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980382A (en) * 1974-06-03 1976-09-14 Raychem Corporation Matched impedance coaxial cable to printed circuit board terminator
EP0181306A2 (fr) * 1984-11-06 1986-05-14 Adc Telecommunications, Inc. Dispositif de connecteurs électriques
US4884982A (en) * 1989-04-03 1989-12-05 Amp Incorporated Capacitive coupled connector
US5062811A (en) * 1990-10-30 1991-11-05 Amp Incorporated Capacitive coupled connector for PCB grounding

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980382A (en) * 1974-06-03 1976-09-14 Raychem Corporation Matched impedance coaxial cable to printed circuit board terminator
EP0181306A2 (fr) * 1984-11-06 1986-05-14 Adc Telecommunications, Inc. Dispositif de connecteurs électriques
US4884982A (en) * 1989-04-03 1989-12-05 Amp Incorporated Capacitive coupled connector
US5062811A (en) * 1990-10-30 1991-11-05 Amp Incorporated Capacitive coupled connector for PCB grounding

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3035451A1 (fr) * 2014-12-18 2016-06-22 Delphi International Operations Luxembourg S.à r.l. Pince de mise à la terre pour un système d'allumage d'airbag
CN105720429A (zh) * 2014-12-18 2016-06-29 德尔福国际业务卢森堡公司 用于气囊点火系统的接地夹
US10014635B2 (en) 2014-12-18 2018-07-03 Delphi International Operations Luxembourg S.A.R.L. Grounding clip for an airbag ignition system
CN105720429B (zh) * 2014-12-18 2018-12-14 德尔福国际业务卢森堡公司 用于气囊点火系统的接地夹

Also Published As

Publication number Publication date
EP1064702B1 (fr) 2005-06-01
DE69634805T2 (de) 2006-04-27
TW359910B (en) 1999-06-01
AU7600096A (en) 1997-06-19
DE69634805D1 (de) 2005-07-07
EP1064702A1 (fr) 2001-01-03

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