EP0074205B1 - A connector for coaxially shielded cable - Google Patents

A connector for coaxially shielded cable Download PDF

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Publication number
EP0074205B1
EP0074205B1 EP82304427A EP82304427A EP0074205B1 EP 0074205 B1 EP0074205 B1 EP 0074205B1 EP 82304427 A EP82304427 A EP 82304427A EP 82304427 A EP82304427 A EP 82304427A EP 0074205 B1 EP0074205 B1 EP 0074205B1
Authority
EP
European Patent Office
Prior art keywords
contact
connector assembly
outermost
assembly according
male contacts
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
Application number
EP82304427A
Other languages
German (de)
French (fr)
Other versions
EP0074205A1 (en
Inventor
George A. Hansell Iii
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.)
WL Gore and Associates Inc
Original Assignee
WL Gore and Associates Inc
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 WL Gore and Associates Inc filed Critical WL Gore and Associates Inc
Priority to AT82304427T priority Critical patent/ATE18106T1/en
Publication of EP0074205A1 publication Critical patent/EP0074205A1/en
Application granted granted Critical
Publication of EP0074205B1 publication Critical patent/EP0074205B1/en
Expired 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure
    • H01R13/6585—Shielding material individually surrounding or interposed between mutually spaced contacts
    • 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
    • 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

Definitions

  • This invention relates to connectors for connecting conductors of coaxially shielded cables to non-coaxial male contacts.
  • Coaxially shielded cables are well known as the highest fidelity signal wiring for digital signals and analog signals throughout the microwave frequency range.
  • the advent of large scale integrated circuits has increased the density and complexity of electronic circuitry to the point where coaxially shielded cables are often required for interconnection in high density applications.
  • the usefulness of coaxially shielded cables has been limited by cumbersome and time consuming connection methods.
  • GB-A-1558383 (equivalent to F-R-A-2334267) discloses a connector in which coaxial cable is wired to two, parallel sockets for connection with two adjacent male pins in a row of such pins. Two such connectors may share a male pin as a common earth connection, but only if the connectors are stacked one over the other; and no more than two connectors can share the common pin because they occupy both neighbouring pins in the row and prevent the attachment of a third connector to the common pin.
  • This connector is therefore not suitable for packaging with a high density of connections, since it is not possible to arrange for a common earth connection for multiple connectors, and stacking is required for any sharing of a pin.
  • a connector assembly for connecting conductors of a coaxially-shielded cable to a selected one of a row of male contacts
  • said connector assembly comprising: a connector having a first, inner contact, permanently connectable electrically and mechanically to a first, inner conductor of a cable, and removably connectable electrically and mechanically to the said selected male contact, an electrically-insulating element, surrounding the first, inner contact, and an outermost, rectangular-section contact surrounding the insulating element, electrically and mechanically connectable to an outer conductor of the cable, and fastenable to an outermost jacket of the cable, and characterised by an auxiliary contact which may be disposed lengthwise along the said row, to provide a mechanical and electrical interconnection between an outer conductive face of the outermost contact and another one of said row of male contacts.
  • the auxiliary contact provides an electrical connection, for example an earth connection, between the outer conductors of one or more such connectors and a male pin remote from the connector.
  • the remote pin may then act as a common earth connection for multiple connectors, and there is no need for any stacking of the connectors over the pins.
  • the auxiliary contact is, in one preferred form, a square-wave-shaped springy metal strip which, in use, is disposed among the male pins, and around the connectors thereon, in an interlocking manner.
  • a coaxial connector assembly embodying the present invention is described with reference to Figures 1 and 2 wherein like elements have like numbers.
  • a first inner contact 10 comprising a standard contact which is fully compatible with the standard, non-coaxial round pin or square post male contacts 80 commonly used in packaging electronic circuitry is connected to a first inner conductor of a coaxial cable at junction 91.
  • the standard square post male contacts can be of lengths varying from approximately 0.2 inch (0,5 cm) to approximately 1 inch (2.5 cm) and transverse facial dimensions of 0.025 inch (0.064 cm) square.
  • Round pin male contacts are typically between .020 inch (0.051 cm) and .035 inch (0.089 cm) in diameter.
  • An electrically insulating medium 20 surrounds the first inner contact 10 and extends axially along the surface of the first inner contact 10.
  • the insulating medium 20 is surrounded by an outermost contact 30 to which is connected the outer conductor 92 of a coaxial cable 100.
  • the axes of the first inner contact 10 and the outermost contact 30 are substantially mutually coincident or parallel.
  • the outermost contact 30 is a hollow rectangular-section solid having a transverse face of which the dimensions of the side extending along the row of contacts 80 is slightly smaller than the centre-to-centre distance of the contacts 80. This centre-to-centre distance can be as small as 0.100 inch (0.254 cm).
  • An auxiliary contact 40 is installed lengthwise among a row of standard male contacts 80 by connecting a female connector or socket 50 of contact 40 onto a standard male contact 80 or by connecting two spaced sockets 50 of contact 40 onto two standard male contacts 80 spaced apart along a row of male contacts 80.
  • the auxiliary contact 40 provides a mechanical and an electrical interconnection between an unoccupied male contact 80 and the outermost contact 30 of at least one connector.
  • the auxiliary contact 40 can be made from a strip of any highly conductive material.
  • the shape of the auxiliary contact 40 is such that a portion of the auxiliary contact 40 contacts a portion of an outer conductive face of the outermost contact 30 whenever an outermost contact 30 is connected to one of the standard male contacts disposed in a row.
  • the auxiliary contact 40 can be shaped as a square wave, made of springy metal strip and installed among a row of standard male contacts 80 such that, whenever an outermost contact 30 is connected to one of the standard male contacts, three axial faces of that outermost contact 30 contact portions of the auxiliary contact 40.
  • the half wavelength of the aquare wave should correspond with the spacing between adjacent male contacts 80.
  • other shapes are possible which will also provide sufficient contact between the auxiliary contact 40 and an outermost contact 30.
  • the outermost contact 30 can be selectively supplied with an electrically-insulating coating to leave exposed only portions of the outermost contact 30 which serve as electrical contact points.
  • auxiliary contact 40 The advantage of the auxiliary contact 40 is that the outer conductors of several coaxial cables can be efficiently connected together and to the electronic circuitry. This prevents wasting space that occurs if the outer conductors are separately tied together or if each other conductor is separately tied to the electronic circuitry.
  • the outer conductors can all be tied to ground by connecting the socket 50 of the auxiliary contact 40 to a standard male contact which is grounded. This eliminates the need for separately grounding each outer conductor.
  • a modification of this embodiment can be achieved by selectively applying an electrically insulating coating to the outermost contact 30 and to the auxiliary contact 40 to leave said contacts exposed substantially only at their interface.
  • a second inner contact (not shown) is connected to a second inner conductor of a coaxial cable and is compatible with the standard male contacts.
  • the second inner contact must be electrically insulated from both the first inner contact 10 and the outermost contact 30 and must be disposed so that the distance from the centre of the second inner contact to the centre of the first inner contact 10 is equal to the centre-to-centre distance of the male pins 80.
  • the shape of the outermost contact 30 and the auxiliary contact 40 must be appropriately modified.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

A connector for connecting conductors of a coaxially shielded cable 100 to male contacts 80 disposed in a row comprise an inner contact for connecting an inner conductor 90 of the cable to a male contact 80, an outer rectangular-section contact 30 spaced and insulated from the inner contact and connected to an outer conductor 92 of the cable, and a further contact (40 or 60) electrically connecting the outer contact 30 to one of the male contacts 80.

Description

  • This invention relates to connectors for connecting conductors of coaxially shielded cables to non-coaxial male contacts.
  • Coaxially shielded cables are well known as the highest fidelity signal wiring for digital signals and analog signals throughout the microwave frequency range. The advent of large scale integrated circuits has increased the density and complexity of electronic circuitry to the point where coaxially shielded cables are often required for interconnection in high density applications. However, the usefulness of coaxially shielded cables has been limited by cumbersome and time consuming connection methods.
  • Connectors have been developed which allow the use of coaxially shielded cables in existing, well-developed hardware systems for packaging electronic circuitry. GB-A-1558383 (equivalent to F-R-A-2334267) discloses a connector in which coaxial cable is wired to two, parallel sockets for connection with two adjacent male pins in a row of such pins. Two such connectors may share a male pin as a common earth connection, but only if the connectors are stacked one over the other; and no more than two connectors can share the common pin because they occupy both neighbouring pins in the row and prevent the attachment of a third connector to the common pin.
  • This connector is therefore not suitable for packaging with a high density of connections, since it is not possible to arrange for a common earth connection for multiple connectors, and stacking is required for any sharing of a pin.
  • According to the invention, there is provided a connector assembly for connecting conductors of a coaxially-shielded cable to a selected one of a row of male contacts, said connector assembly comprising: a connector having a first, inner contact, permanently connectable electrically and mechanically to a first, inner conductor of a cable, and removably connectable electrically and mechanically to the said selected male contact, an electrically-insulating element, surrounding the first, inner contact, and an outermost, rectangular-section contact surrounding the insulating element, electrically and mechanically connectable to an outer conductor of the cable, and fastenable to an outermost jacket of the cable, and characterised by an auxiliary contact which may be disposed lengthwise along the said row, to provide a mechanical and electrical interconnection between an outer conductive face of the outermost contact and another one of said row of male contacts.
  • The auxiliary contact provides an electrical connection, for example an earth connection, between the outer conductors of one or more such connectors and a male pin remote from the connector. The remote pin may then act as a common earth connection for multiple connectors, and there is no need for any stacking of the connectors over the pins.
  • The auxiliary contact is, in one preferred form, a square-wave-shaped springy metal strip which, in use, is disposed among the male pins, and around the connectors thereon, in an interlocking manner.
  • The invention will now be particularly described, by way of example, with reference to the accompanying drawings in which:
    • Figure 1 is a perspective view of a preferred embodiment of the invention, in use; and
    • Figure 2 is a longitudinal sectional view of a portion of the connector of Figure 1, showing the first inner contact, the outermost contact and the electrically-insulating element.
  • A coaxial connector assembly embodying the present invention is described with reference to Figures 1 and 2 wherein like elements have like numbers. A first inner contact 10 comprising a standard contact which is fully compatible with the standard, non-coaxial round pin or square post male contacts 80 commonly used in packaging electronic circuitry is connected to a first inner conductor of a coaxial cable at junction 91. The standard square post male contacts can be of lengths varying from approximately 0.2 inch (0,5 cm) to approximately 1 inch (2.5 cm) and transverse facial dimensions of 0.025 inch (0.064 cm) square. Round pin male contacts are typically between .020 inch (0.051 cm) and .035 inch (0.089 cm) in diameter.
  • An electrically insulating medium 20 surrounds the first inner contact 10 and extends axially along the surface of the first inner contact 10.
  • The insulating medium 20 is surrounded by an outermost contact 30 to which is connected the outer conductor 92 of a coaxial cable 100. The axes of the first inner contact 10 and the outermost contact 30 are substantially mutually coincident or parallel. The outermost contact 30 is a hollow rectangular-section solid having a transverse face of which the dimensions of the side extending along the row of contacts 80 is slightly smaller than the centre-to-centre distance of the contacts 80. This centre-to-centre distance can be as small as 0.100 inch (0.254 cm).
  • An auxiliary contact 40 is installed lengthwise among a row of standard male contacts 80 by connecting a female connector or socket 50 of contact 40 onto a standard male contact 80 or by connecting two spaced sockets 50 of contact 40 onto two standard male contacts 80 spaced apart along a row of male contacts 80. The auxiliary contact 40 provides a mechanical and an electrical interconnection between an unoccupied male contact 80 and the outermost contact 30 of at least one connector.
  • The auxiliary contact 40 can be made from a strip of any highly conductive material. The shape of the auxiliary contact 40 is such that a portion of the auxiliary contact 40 contacts a portion of an outer conductive face of the outermost contact 30 whenever an outermost contact 30 is connected to one of the standard male contacts disposed in a row. For example, the auxiliary contact 40 can be shaped as a square wave, made of springy metal strip and installed among a row of standard male contacts 80 such that, whenever an outermost contact 30 is connected to one of the standard male contacts, three axial faces of that outermost contact 30 contact portions of the auxiliary contact 40. For this purpose, the half wavelength of the aquare wave should correspond with the spacing between adjacent male contacts 80. Of course, other shapes are possible which will also provide sufficient contact between the auxiliary contact 40 and an outermost contact 30.
  • The outermost contact 30 can be selectively supplied with an electrically-insulating coating to leave exposed only portions of the outermost contact 30 which serve as electrical contact points.
  • The advantage of the auxiliary contact 40 is that the outer conductors of several coaxial cables can be efficiently connected together and to the electronic circuitry. This prevents wasting space that occurs if the outer conductors are separately tied together or if each other conductor is separately tied to the electronic circuitry. For example, the outer conductors can all be tied to ground by connecting the socket 50 of the auxiliary contact 40 to a standard male contact which is grounded. This eliminates the need for separately grounding each outer conductor.
  • A modification of this embodiment can be achieved by selectively applying an electrically insulating coating to the outermost contact 30 and to the auxiliary contact 40 to leave said contacts exposed substantially only at their interface.
  • In a further modification, a second inner contact (not shown) is connected to a second inner conductor of a coaxial cable and is compatible with the standard male contacts. The second inner contact must be electrically insulated from both the first inner contact 10 and the outermost contact 30 and must be disposed so that the distance from the centre of the second inner contact to the centre of the first inner contact 10 is equal to the centre-to-centre distance of the male pins 80. In such a case, the shape of the outermost contact 30 and the auxiliary contact 40 must be appropriately modified.
  • It will be apparent that the number of connectors to be used will be limited by the number of male contacts which are not directly engaged by an auxiliary contact.

Claims (10)

1. A connector assembly for connecting conductors of a coaxially-shielded cable (100) to a selected one of a row of male contacts (80), said connector assembly comprising: a connector having a first, inner contact (10), permanently connectable electrically and mechanically to a first, inner conductor (90) of the cable, and removably connectable electrically and mechanically to the said selected male contact (80), an electrically-insulating element (20), surrounding the first, inner contact (10), and an outermost, rectangular-section contact (30) surrounding the insulating element (20), electrically and mechanically connectable to an outer conductor (92) of the cable, and fastenable to an outermost jacket of the cable, and characterised by an auxiliary contact (40) which is disposed lengthwise along the said row, to provide a mechanical and electrical interconnection between an outer conductive face of the outermost contact (30) and another one of said row of male contacts (80).
2. A connector assembly according to claim 1, wherein the outermost contact (30) has dimensions such that two or more such connectors are positioned on adjacent ones of the said row of male contacts (80).
3. A connector assembly according to claim 2, wherein the width of each outer face of the outermost contact (30) which, in use, lies along the said row is slightly smaller than the centre-to-centre distance between adjacent ones of the said row of male contacts (80).
4. A connector assembly according to claim 2 or 3, wherein the auxiliary contact (40) is a square- waveshaped springy metal strip which, in use, provides a mechanical and electrical interconnection between the said outermost contact (30) and the outermost contact (30) of at least one similar connector.
5. A connector assembly according to claim 4, wherein the said square-wave shape of said springy metal strip (40) has a half wavelength corresponding to the spacing between adjacent ones of said male contacts (80) such that said auxiliary contact (40) is disposed among said male contacts in an interlocking manner.
6. A connector assembly according to any preceding claim, wherein the said auxiliary contact (40) comprises a female connector (50) to provide said mechanical and electrical connection with the said other male contact (80).
7. A connector assembly according to claim 1, comprising a second inner contact compatible with each of the said male contacts (80), and housed within the outermost contact (30), separated from said outermost contact (30) and from the first, inner contact (10), by the insulating element (20), and electrically connectable to a second inner conductor of the said cable.
8. A connector assembly according to claim 1 or 2, wherein an insulating coating is selectively applied to the outermost contact (30) and to the auxiliary contact (40) to leave said contacts exposed substantially only at the connection therebetween.
9. A connector assembly according to any preceding claim, wherein said male contacts (80) comprise square posts.
10. A connector assembly according to any of claims 1 to 8, wherein said male contacts (80) comprise round pins.
EP82304427A 1981-08-24 1982-08-23 A connector for coaxially shielded cable Expired EP0074205B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82304427T ATE18106T1 (en) 1981-08-24 1982-08-23 CONNECTOR FOR A SHIELDED COAXIAL CABLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29582481A 1981-08-24 1981-08-24
US295824 1999-04-21

Publications (2)

Publication Number Publication Date
EP0074205A1 EP0074205A1 (en) 1983-03-16
EP0074205B1 true EP0074205B1 (en) 1986-02-19

Family

ID=23139375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82304427A Expired EP0074205B1 (en) 1981-08-24 1982-08-23 A connector for coaxially shielded cable

Country Status (4)

Country Link
EP (1) EP0074205B1 (en)
JP (1) JPS5878376A (en)
AT (1) ATE18106T1 (en)
DE (1) DE3269185D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7004793B2 (en) 2004-04-28 2006-02-28 3M Innovative Properties Company Low inductance shielded connector

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131248B1 (en) * 1983-07-11 1988-09-28 W.L. Gore & Associates, Inc. Connector for coaxially shielded cable
US4964814A (en) * 1986-10-03 1990-10-23 Minnesota Mining And Manufacturing Co. Shielded and grounded connector system for coaxial cables
CA1289211C (en) * 1986-11-18 1991-09-17 Timothy A. Lemke Terminator for multiple electrical conductors
GB2255863B (en) * 1991-05-17 1995-05-03 Minnesota Mining & Mfg Connector for coaxial cables
DE4238746C1 (en) * 1992-11-17 1994-04-21 Fraunhofer Ges Forschung Coaxial high-frequency connector for connecting several coaxial lines
NL9202301A (en) * 1992-12-31 1994-07-18 Du Pont Nederland Connector with improved shielding.
US5620340A (en) * 1992-12-31 1997-04-15 Berg Technology, Inc. Connector with improved shielding
US5842887A (en) * 1995-06-20 1998-12-01 Berg Technology, Inc. Connector with improved shielding
US6443740B1 (en) 1998-10-15 2002-09-03 Fci Americas Technology, Inc. Connector system
DE60210978T2 (en) * 2001-07-21 2006-12-14 3M Innovative Properties Co., St. Paul CONNECTORS FOR A MULTIPLE OF COAXIAL CABLE CONNECTING JACKS
US7121888B2 (en) 2002-07-10 2006-10-17 3M Innovative Properties Company Multiple wire cable connector
EP1887659A1 (en) 2006-08-07 2008-02-13 3M Innovative Properties Company Electrical connection for coaxial cables
JP2022026128A (en) * 2020-07-30 2022-02-10 トヨタ自動車株式会社 Cooling device for heat exchanger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3533044A (en) * 1968-06-17 1970-10-06 Ibm Electrical connecting device
JPS5121875A (en) * 1974-08-15 1976-02-21 Yamato Scale Co Ltd KEISUHAKARI
NL7513334A (en) * 1975-11-14 1977-05-17 Du Pont CONTACT DEVICE FOR CONNECTING A COAXIAL CABLE.
JPS596035B2 (en) * 1977-10-13 1984-02-08 三菱電機株式会社 connector
JPS5848776Y2 (en) * 1979-09-27 1983-11-08 タケダ理研工業株式会社 Contact for coaxial cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7004793B2 (en) 2004-04-28 2006-02-28 3M Innovative Properties Company Low inductance shielded connector

Also Published As

Publication number Publication date
JPS5878376A (en) 1983-05-11
ATE18106T1 (en) 1986-03-15
DE3269185D1 (en) 1986-03-27
EP0074205A1 (en) 1983-03-16
JPH0326514B2 (en) 1991-04-11

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