WO1999007041A1 - Connecteur electrique a terminaison automatique - Google Patents

Connecteur electrique a terminaison automatique Download PDF

Info

Publication number
WO1999007041A1
WO1999007041A1 PCT/US1998/016242 US9816242W WO9907041A1 WO 1999007041 A1 WO1999007041 A1 WO 1999007041A1 US 9816242 W US9816242 W US 9816242W WO 9907041 A1 WO9907041 A1 WO 9907041A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical connector
resistive element
connector
pieces
external circuit
Prior art date
Application number
PCT/US1998/016242
Other languages
English (en)
Inventor
William K. Preece
Michael T. Jennison
Thomas A. Jennison
Original Assignee
Jennison Holdings Trust
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 Jennison Holdings Trust filed Critical Jennison Holdings Trust
Priority to AU86894/98A priority Critical patent/AU8689498A/en
Publication of WO1999007041A1 publication Critical patent/WO1999007041A1/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
    • H01R24/42—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 comprising impedance matching means or electrical components, e.g. filters or switches
    • H01R24/46—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 comprising impedance matching means or electrical components, e.g. filters or switches comprising switches
    • 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

  • the present invention relates to electrical connectors, and in particular to an electrical connector providing a means for establishing an automatic grounded termination point for the connector upon disconnection of the connector from an external signal source or receiving device.
  • the present invention provides a simple and inexpensive connector which can be automatically terminated to ground whenever it is disconnected from a mating connector. Accordingly, it is an object of the present invention to provide an electrical connector to eliminate the effects of spurious extraneous signals, undesired signal emissions and signal reflections on the circuitry connected to the connector.
  • the connector of the present invention is preferably comprised of an exterior shell made of a material with sufficiently high electrical conductivity and mechanical strength to permit mounting the connector to various types of mating connectors and other electrical devices as well as to act as a housing for the other components making up the connector.
  • a lining made of an electrically insulating material is inserted into the shell.
  • This lining mechanically secures and electronically isolates the shell from a center conductor located within the connector.
  • the shell also serves as the means by which the electrical connection to ground is established for the self-termination feature of the invention.
  • One end of the exterior shell is preferably configured to be mounted to a circuit board, to a male or female coaxial F connector, or to any other signal carrying device or connector to permit establishing a semi-permanent connection between the connector and the device to which it is mounted.
  • the other end of the exterior shell is preferably configured to establish a removable connection with a male coaxial F connector, BNC connector or any other similarly designed connector.
  • the center conductor is made of an electrically conductive material preferably having a spring characteristic.
  • the center conductor can be made in a one piece or a two-piece fabrication.
  • One end of the conductor is configured to be connected to a circuit board, to a male or female coaxial F connector, or to the signal carrying wire of any other signal carrying device or connector to establish a semi-permanent connection with the device to which the connector is mounted.
  • the other end of the center conductor is configured to accomplish the self-termination feature of the present invention.
  • This self- terminating end of the conductor preferably consists of at least two separable contactor pieces which are configured to have the tendency to be forced together in the absence of an external connection.
  • the contactor pieces preferably contain at least two sets of tabs which are preferably angled such that they are forced together under spring-like pressure to form two wedges.
  • the wedge formed by one of the tab pairs holds a resistive element outward against the inside of the grounded exterior shell to provide an electrical connection between the center conductor and the exterior shell through a resistive element. Insertion of an external conductor element from another electrical device or connector into the wedge formed by the other set of tab pairs forces the contactor pieces
  • Figure 1A is a longitudinal sectional view of the electrical connector of the present invention.
  • Figure IB is a longitudinal top plan view of the electrical connector of the present invention, as configured in a disconnected state.
  • Figure 1C is an axial sectional view of the electrical connector of the present invention, as configured in a disconnected state.
  • Figure 2A is a longitudinal top plan view of the electrical connector of the present invention, as configured for connection to an external signal transmission line.
  • Figure 2B is an axial sectional view of the electrical connector of the present invention, as configured for connection to an external signal transmission line.
  • Figure 3A is a sectional view of the grounded resistive element of the present
  • Figure 3B is a top plan view of the grounded resistive element of the present
  • Figure 4A is a longitudinal sectional view of the electrical connector of the present invention configured with an alternate design for the resistive element.
  • Figure 4B is an axial sectional view of the electrical connector of the present invention with an alternate design for the resistive element, as configured in a disconnected state.
  • the connector 1 is preferably comprised of a one piece exterior shell 2 consisting of two sections 2a and 2b which couple the connector 1 to external circuitry and which also act as a protective shield for the components housed within the connector 1.
  • the first section of the shell 2a has an exterior which is preferably configured for mounting the connector 1 to an electrical circuit board, or to a male or female coaxial F connector, or to any other signal carrying device or connector to permit establishing a semi-permanent connection between the connector and the device to which it is mounted (not shown), and contains an interior chamber 3 for housing the contacts of a conductor 4 that establishes the semi-permanent connection.
  • the second section of the shell 2b has an exterior surface 5 adapted for establishing a removable connection with an external signal coupling, such as a male coaxial F connector, BNC connector or any other similarly designed connector, such as by threaded or push-on connection to the male end of a coaxial connector (not shown).
  • an external signal coupling such as a male coaxial F connector, BNC connector or any other similarly designed connector, such as by threaded or push-on connection to the male end of a coaxial connector (not shown).
  • the exterior shell 2 is made of a material, preferably metal, with sufficiently high electrical conductivity and mechanical strength to permit mounting the connector to various types of mating connectors and other electrical devices as well as to act as a housing for the other components making up the connector, including copper, silver, gold, tungsten, graphite, iron, brass, zinc, iron, aluminum and steel and other similar materials.
  • Shell sections 2a and 2b are preferably manufactured as a single piece, although a multiple piece construction is also possible.
  • the exterior shell 2 is grounded in operation. Either section 2a or 2b can be configured for attaching the connector 1 to any type of commonly used external coupling, including threaded couplings, coaxial couplings and socket-type couplings.
  • a lining 9 made of an electrically insulating material such as plastic, phenolic or rubber is inserted into the shell 2 to mechanically secure and electrically isolate the center conductor 4 from the exterior of the shell.
  • This lining can either be fabricated in a single piece construction or it can be fabricated in multiple pieces for ease of installation.
  • the center conductor 4 is made of an electrically conductive material such as
  • One end of the conductor 4 is configured to be connected to a circuit board, to a male or female coaxial F connector, or to the signal carrying wire of any other signal carrying device or connector to establish a semipermanent connection with the device to which the connector is mounted.
  • the center conductor 4 extends into the interior of the connector 1 and terminates in a multi-piece contactor 6 which is configured to accomplish the self-termination feature of the present invention by automatically establishing electrical contact with a grounded resistive element 7 when the conductor 6 is not coupled to an external connector 8.
  • This self -terminating end of the conductor 6 preferably consists of at least two separable contactor pieces 6a and 6b which are configured to have the tendency to be forced together in the absence of an external connection 8.
  • the contactor pieces 6a and 6b preferably contain at least two sets of tabs lOa-lOb and lOc-lOd which are preferably angled such that they are forced together under spring-like pressure to form two wedges.
  • the wedge formed by one of the tab pairs lOc-lOd holds a resistive element outward against the inside of the grounded exterior shell 2 to provide an electrical connection between the center conductor 4 and the exterior shell 2 through a resistive element 7.
  • Insertion of an external conductor element 8 from another electrical device or connector into the wedge formed by the other set of tab pairs lOa-lOb forces the contactor pieces 6a and 6b to spread, thereby causing the center conductor 4 to become ungrounded by breaking either the electrical connection between the resistive element 7 and the center conductor 4 or the connection between the resistive element 7 and the exterior shell 2.
  • the breaking of this ground connection allows a normal electrical connection to be established between the inserted external conductor element 8 and the device to which the connector 1 is mounted.
  • one embodiment utilizes a multi-piece conductor 6 with angled tabs forced together under spring-like pressure to form a wedge for contacting resistive element 7, it is understood that other configurations within the level of ordinary skill in the art for establishing a disconnectible contact between the conductor 6 and the resistive element 7 and/or between the resistive element 7 and the exterior shell 2 could be used.
  • the resistive element 7 can either be attached to the exterior shell 2 such that removable contact is made with at least one of the conductor elements 6a or 6b, or resistive element 7 can be permanently attached to one of the contactor elements 6a or 6b such as by crimping, soldering or encapsulation.
  • the resistive element 7 will establish a ground connection with the exterior shell 2 when the conductor elements 6a and 6b are forced together in the absence of an external conductor element 8.
  • an external conductor element 8 is
  • the conductor elements 6a and 6b spread in such a manner as to disconnect from the resistive element 7 to disestablish the ground connection.
  • the resistive element 7 will again establish a ground connection with the exterior shell 2 when the conductor elements 6a and 6b are forced together in the absence of an external conductor element 8.
  • the conductor elements 6a and 6b spread in such a manner as to disconnect the resistive element 7 from the exterior shell 2 to disestablish the ground connection.
  • the desired movement of the conductor elements 6a and 6b can be achieved by configuring the insulator 9 with a protrusion 9a and a groove or indentation 9b to respectively limit and expand the travel of the associated conductive element 6a or 6b in such a manner as to cause the ground connection to be broken when the external conductor element 8 forces conductor elements
  • Groove or indentation 9b can also act to restrict rotation of center conductor element(s) 6a and/or 6b.
  • conductor element 6b pulls resistive element 7 away from the exterior shell 2 through the combined effect of protrusion 9a limiting the travel of conductor element 6a and groove 9b expanding the travel of conductor element 6b, which together causes enough deflection of resistive element 7 to accomplish disconnection from exterior shell 2.
  • the resistive element 7 is preferably made as a two-piece assembly 7a and 7b using an electrically conductive material such as copper and a standard electrical resistor material.
  • an electrically conductive material such as copper and a standard electrical resistor material.
  • Connectors could be manufactured with various resistive elements to provide any resistance that would be required so as to match the designed impedance of the system in which it is being used
  • the resistive element 7 has a resistance value of approximately 75
  • top contact 7a makes contact with the exterior shell 2 to establish a connection to ground
  • bottom contact 7b has an end configured to form an electrical connection with the wedge formed by the angled tabs of contactor pieces 10c and lOd.
  • a design variation could utilize a spring to force the resistive element 7 against the center conductor 4 in the absence of an external connector 8.
  • An alternate design variation could utilize a configuration which ensures that the resistive element 1 remains in contact with the exterior shell 2 at all times.
  • connector 1 In the absence of an external electrical connection 8, connector 1 will be configured as shown in Figure IB, thereby establishing an automatic grounded termination point for the connector 1.
  • a grounded termination is desirable upon disconnection of the connector 1 from an external signal coupling in order to eliminate the effects of spurious extraneous signals, undesired signal emissions and signal reflections on the circuitry connected to conductor 4.
  • the contactor sections 6a and 6b are forced apart as shown in Figures 2 A and 2B, causing the electrical contact between tabs 10c and lOd and the resistive element 7 to be broken, thereby disconnecting conductor 4 from ground and establishing a signal path between the external connector 8 and the circuitry connected to conductor 4.

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

Abstract

La présente invention concerne des connecteurs électriques, et en particulier, un connecteur électrique permettant d'établir un point de terminaison automatique mis à la terre pour ce connecteur, lors de la déconnexion de ce dernier d'une source de signaux externes ou d'un dispositif de réception. En l'absence de connexion électrique externe, le connecteur va être configuré pour établir un point de terminaison automatique mis à la terre pour supprimer les effets des capacitances parasites, des signaux parasites et des réflections de signaux sur le circuit connecté au conducteur. Une fois couplé à un connecteur externe, la connexion à la terre du connecteur va être interrompue pour permettre d'établir une trajectoire de signaux pour le circuit externe.
PCT/US1998/016242 1997-08-04 1998-08-04 Connecteur electrique a terminaison automatique WO1999007041A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU86894/98A AU8689498A (en) 1997-08-04 1998-08-04 Self-terminating electrical connector

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US90517797A 1997-08-04 1997-08-04
US08/905,177 1997-08-04
US6328398A 1998-04-20 1998-04-20
US09/063,283 1998-04-20

Publications (1)

Publication Number Publication Date
WO1999007041A1 true WO1999007041A1 (fr) 1999-02-11

Family

ID=26743243

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/016242 WO1999007041A1 (fr) 1997-08-04 1998-08-04 Connecteur electrique a terminaison automatique

Country Status (2)

Country Link
AU (1) AU8689498A (fr)
WO (1) WO1999007041A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784950A (en) * 1972-10-26 1974-01-08 R Coffman Coaxial connector with integral switched terminating resistor
EP0393670A2 (fr) * 1989-04-20 1990-10-24 The Whitaker Corporation Connecteur et assemblage de câble terminal à impédance auto-adaptant
US5413502A (en) * 1994-02-01 1995-05-09 Wang; Tsan-Chi Auto termination type electrical connector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784950A (en) * 1972-10-26 1974-01-08 R Coffman Coaxial connector with integral switched terminating resistor
EP0393670A2 (fr) * 1989-04-20 1990-10-24 The Whitaker Corporation Connecteur et assemblage de câble terminal à impédance auto-adaptant
US5413502A (en) * 1994-02-01 1995-05-09 Wang; Tsan-Chi Auto termination type electrical connector

Also Published As

Publication number Publication date
AU8689498A (en) 1999-02-22

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