EP1064702B1 - Connecteur bnc decouple - Google Patents

Connecteur bnc decouple Download PDF

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Publication number
EP1064702B1
EP1064702B1 EP96938684A EP96938684A EP1064702B1 EP 1064702 B1 EP1064702 B1 EP 1064702B1 EP 96938684 A EP96938684 A EP 96938684A EP 96938684 A EP96938684 A EP 96938684A EP 1064702 B1 EP1064702 B1 EP 1064702B1
Authority
EP
European Patent Office
Prior art keywords
insulative housing
tab
base
clip
pair
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.)
Expired - Lifetime
Application number
EP96938684A
Other languages
German (de)
English (en)
Other versions
EP1064702A1 (fr
Inventor
Michael J. Tomchak
Mark S. Caviness
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.)
Whitaker LLC
Original Assignee
Whitaker LLC
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Filing date
Publication date
Application filed by Whitaker LLC filed Critical Whitaker LLC
Publication of EP1064702A1 publication Critical patent/EP1064702A1/fr
Application granted granted Critical
Publication of EP1064702B1 publication Critical patent/EP1064702B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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. Such emissions can interfere with nearby 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 ground connection is achieved by a ground path passing through a conductive panel.
  • the object of the invention has been achieved by providing an improved decoupled BNC type connector as defined in claim 1 for mounting to a planar electronic device, such as a printed circuit board and by a clip as defined in claim 7.
  • 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 (e.g., circuit board), 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 extend over slots that are in communication with the outer conductor and containing capacitor elements, 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, and has a board lock projection to secure the connector to the planar electronic device.
  • the housing portion includes an opening extending between the intermediate base and the shell, where the intermediate base includes a spark gap tab positioned within the opening, such as by a press fit, and spaced from the shell.
  • 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 shape.
  • 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.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)

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).

Claims (11)

  1. Connecteur coaxial découplé (10) comportant un conducteur central (40), un insert diélectrique (30) entourant le conducteur central (40) et un conducteur externe (18) entourant l'insert diélectrique (30), le conducteur externe (18) étant disposé à l'intérieur d'un boítier isolant (12) et une bride (76) possédant deux bras (82) s'étendant depuis une base (80) vers le boítier isolant (12) entourant partiellement le boítier isolant (12) et s'étendant par-dessus des fentes (66) qui sont en communication avec le conducteur externe (18) pour retenir les composants électriques (68) dans la fente (66), le connecteur étant caractérisé par:
    la bride (76) comportant une patte d'éclateur (74) s'étendant depuis la base (80) et fixée dans une ouverture (72) dans le boítier isolant (12) au moyen d'un ajustement serré entre elles; et au moins une saillie de verrouillage de carte (84) s'étendant depuis la base (80) dans la direction opposée au boítier (12) pour s'insérer dans une ouverture d'une carte à circuit imprimé et pour fixer le connecteur électrique (10) à celle-ci.
  2. Connecteur électrique (10) selon la revendication 1, dans lequel les deux bras (82) sont inclinés de manière à s'étendre depuis la base (80) et l'un vers l'autre.
  3. Connecteur électrique (10) selon la revendication 1, dans lequel la patte d'éclateur (74) comprend en outre deux dents de verrouillage disposées le long des bords opposés de la patte (74) pour coopération avec les parois internes de l'ouverture (72) du boítier isolant (12).
  4. Connecteur électrique (10) selon la revendication 3, dans lequel la patte d'éclateur (74) s'étend depuis la base (80) dans le boítier (12) jusqu'à un point qui est espacé du conducteur externe (18) de sorte qu'une lame d'air est formée entre la patte d'éclateur (74) et le conducteur externe (18).
  5. Connecteur électrique (10) selon la revendication 1, dans lequel le verrou de carte (84) comprend en outre deux branches (86) conçues pour s'étendre depuis le verrou de carte (84), chacune des branches (86) possédant une barbe de retenue (88) disposée le long d'un bord près de l'extrémité distale.
  6. Connecteur électrique (10) selon la revendication 5, dans lequel le verrou de carte (84) comprend en outre une patte de verrouillage qui s'étend dans le boítier isolant (12) et est fixée à celui-ci par la coopération de la patte de verrouillage avec une ouverture de réception de verrou de carte dans le boítier isolant.
  7. Bride (76) pour entourer partiellement un boítier isolant (12) d'un connecteur électrique (10) et pour fixer les composants électriques (68) qui s'y trouvent, la bride possédant une base (80) pour engager une première surface du boítier isolant, et deux bras en porte-à-faux (82) s'étendant depuis la base (80) pour engager des deuxième et troisième surfaces opposées du boítier isolant (12), la bride (76) étant caractérisée par:
    une patte d'éclateur (74) adaptée pour s'étendre depuis la base (80) dans une ouverture (72) du boítier isolant (12), la patte (74) possédant deux dents de verrouillage disposées le long de ses bords opposés pour coopération avec les parois internes de l'ouverture du boítier isolant (12); et
    au moins une saillie de verrouillage de carte (84) s'étendant depuis la base (80) pour s'insérer dans une ouverture dans une carte à circuit imprimé.
  8. Bride (76) selon la revendication 1, dans laquelle les deux bras (82) sont inclinés de manière à s'étendre depuis la base (80) et l'un vers l'autre.
  9. Bride (76) selon la revendication 7, dans laquelle la patte d'éclateur (74) est conçue de manière à s'étendre depuis la base (80) dans le boítier isolant (12) du connecteur électrique (10) jusqu'à un point qui est espacé d'un conducteur (18) du connecteur électrique (10) de sorte qu'une lame d'air est formée entre la patte d'éclateur (74) et le conducteur (18).
  10. Bride (76) selon la revendication 7, dans laquelle le verrou de carte (84) comprend en outre deux branches (86) s'étendant depuis le verrou de carte (84), chacune des branches (86) possédant une barbe de retenue (88) disposée le long d'un bord près d'une extrémité distale.
  11. Bride (76) selon la revendication 10, dans laquelle le verrou de carte (84) comprend en outre une patte de verrouillage qui est conçue pour s'étendre dans le boítier isolant (12) et pour être fixée à celui-ci par la coopération de la patte de verrouillage avec une ouverture de réception de verrou de carte dans le boítier isolant (12).
EP96938684A 1995-11-30 1996-10-28 Connecteur bnc decouple Expired - Lifetime EP1064702B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US787395P 1995-11-30 1995-11-30
US7873P 1995-11-30
PCT/US1996/017438 WO1997020368A1 (fr) 1995-11-30 1996-10-28 Connecteur bnc decouple

Publications (2)

Publication Number Publication Date
EP1064702A1 EP1064702A1 (fr) 2001-01-03
EP1064702B1 true EP1064702B1 (fr) 2005-06-01

Family

ID=21728558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96938684A Expired - Lifetime EP1064702B1 (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)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3035451B1 (fr) * 2014-12-18 2019-09-04 Aptiv Technologies Limited Pince de mise à la terre pour un système d'allumage d'airbag

Family Cites Families (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
US4628159A (en) * 1984-11-06 1986-12-09 Adc Telecommunications, Inc. Electrical connector apparatus
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

Also Published As

Publication number Publication date
DE69634805D1 (de) 2005-07-07
TW359910B (en) 1999-06-01
AU7600096A (en) 1997-06-19
EP1064702A1 (fr) 2001-01-03
DE69634805T2 (de) 2006-04-27
WO1997020368A1 (fr) 1997-06-05

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