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WO1999023729A1 - Prises male et femelle pour systemes de transmission de donnees - Google Patents

Prises male et femelle pour systemes de transmission de donnees Download PDF

Info

Publication number
WO1999023729A1
WO1999023729A1 PCT/GB1998/003304 GB9803304W WO9923729A1 WO 1999023729 A1 WO1999023729 A1 WO 1999023729A1 GB 9803304 W GB9803304 W GB 9803304W WO 9923729 A1 WO9923729 A1 WO 9923729A1
Authority
WO
WIPO (PCT)
Prior art keywords
contacts
plug
pair
pairs
socket
Prior art date
Application number
PCT/GB1998/003304
Other languages
English (en)
Inventor
Richard Weatherley
Original Assignee
Richard Weatherley
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 Richard Weatherley filed Critical Richard Weatherley
Priority to EP98967078A priority Critical patent/EP0976178A2/fr
Priority to CA002276590A priority patent/CA2276590A1/fr
Publication of WO1999023729A1 publication Critical patent/WO1999023729A1/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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6461—Means for preventing cross-talk
    • 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
    • H01R24/60—Contacts spaced along planar side wall transverse to longitudinal axis of engagement

Definitions

  • This invention relates to a plug and to a corresponding mating socket which may be used to form a releasable connection between cables of a data transmission system.
  • the so-called "RJ45" plug, and its corresponding socket, are extensively used as a means of forming connections between cables in both analogue and digital data transmission systems.
  • the RJ45 plug has eight contacts each of which is in the form of an elongate bar. The bars are arranged as a parallel side by side array on one side of the central body of the plug.
  • data is supplied to the plug via one or more pairs of conductors. Accordingly, the RJ45 plug can accommodate up to four pairs of conductors. Depending upon the intended use of the plug there are a number of different conventions for connecting the conductors of each pair to their respective contacts.
  • the two central contacts are connected to one pair of incoming conductors, the two outermost contacts at one side of the array are connected to another pair of conductors; the two outermost contacts on the other side of the array are connected to another pair of conductors, and the two remaining contacts (numbers 3 and 6 measured from one end of the array) are connected to the final pair of conductors.
  • the RJ45 plug has proved highly successful for relatively low frequency transmissions, as the required data transfer rate has increased the particular array of contacts used within the RJ45 plugs has lead to problems in that the parallel contact bars tend to increase crosstalk between the various pairs of conductors connected thereto. Whilst certain wiring conventions may lead to a slight reduction in cross-talk as compared with the 568B standard, the fact that certain adjacent contacts will inevitably be serving different conductor pairs means that the cross-talk problem cannot be reduced below a certain level.
  • An object of the present invention is to provide a plug which retains the advantages of the RJ45 plug, but which is substantively less prone to cross-talk problems than the RJ45 plug.
  • Another object of the present invention is to provide a socket which retains the advantages of the RJ45 socket, but which is substantively less prone to cross-talk problems than the RJ45 socket.
  • the socket of the preferred embodiment has the additional advantage of presenting the contacts to a printed circuit board upon which it is mounted in a manner which leads to a particularly simple track configuration on the printed circuit board which in turn leads to a reduction in cross-talk without the need for complex compensation measures.
  • a plug for use in a data transmission system comprises a number of contacts arranged as a plurality pairs of two contacts, one of the pairs of contacts being located on one side of the plug body and another of the pairs of contacts being located on the other side of the plug body, the or each pair located on one side of the plug body being offset from the or each pair located on the other side of the plug body so as to reduce cross-talk therebetween.
  • a socket for use with the plug of the present invention comprising a plurality of contacts positioned to mate with the contacts of the plug of the present invention.
  • the contact arrangement according to the present invention not only reduces the cross-talk but simplifies the track arrangements necessary on a circuit board upon which the socket is mounted.
  • the sockets used in data transmission systems are in general mounted on a printed circuit board on which is also mounted cable connectors, for example of the IDC type. It is necessary to connect the contacts of the socket with the contacts of the IDC connectors and this is accomplished by means of tracks on the printed circuit board. If a conventional RJ45 socket is wired e.g. in accordance with the 568B standard a relatively complex track arrangement must be provided on the PCB in order to provide connections between the socket contacts and the IDC connector contacts.
  • Figure 1 illustrates schematically and in perspective view one embodiment of a plug according to the present invention
  • Figure 2 is a front view of a socket in accordance with one embodiment of the invention for receiving the plug of Figure 1 ;
  • Figure 3 is a perspective rear view of the socket of Figure 2 showing the contact layout
  • Figure 4 shows the socket of Figures 2 and 3 mounted on a PCB with connections provided to IDC connectors.
  • the illustrated plug 9 comprises a body 10 having mounted thereon eight contact bars 1-8.
  • the contact bars are secured to the body of the plug in a manner similar to that of conventional RJ45 plugs, and suitable means are provided at the rear of the plug for connecting conventional metal conductors to the contacts 1-8.
  • the contacts are provided as a parallel array of bars located on one side only of the plug body.
  • four of the contacts are arranged on one side of the plug body, and four of the contacts are arranged on the other side of the plug body.
  • the contacts on the respective sides of the plug body are arranged in pairs, that is to say contacts 1 and 2 form one pair, contacts 3 and 4 form a second pair, contacts 5 and 6 form a third pair and contacts 7 and 8 form a fourth pair.
  • the first and third pairs of contacts are located on one side of the body whilst the second and fourth pairs of contacts are located on the opposite side of the body.
  • the pairs of contacts located on the opposite sides of the body are mutually offset from each other, that is to say each pair of contacts is offset from the nearest contacts located on the opposite side of the body.
  • the proposed plug can be wired in accordance with a number of different conventions, but one preferred feature of its design is that each of four incoming conductor "pairs" can be wired directly to one of the pairs of contacts identified above. For example, if the plug is connected to standard Category 5 unshielded twisted pair
  • a socket for use with the plug of Figure 1 is illustrated viewed from the front - i.e. looking into the mouth into which the plug is inserted.
  • the socket includes contacts 11 positioned to mate with the contact bars 1 -8 when the plug 9 is inserted into the body 12 of the socket.
  • the lay-out of the contacts within the socket is complementary to that of the plug with the result that each pair of contacts in the socket is spaced a substantial distance from the nearest adjacent pair of contacts on the same side of the socket, and is offset relative to the nearest pair of contacts on the opposite side of the socket body.
  • the contacts 11 extend through the body and protrude as pins 13 from the rear surface of the body. These pins enable electrical connections to be made to the socket contacts and, in particular enable the socket to be mounted on a PCB 14 as illustrated in Figure 4 with the pins 13 connected to appropriate connector blocks 15 by way of tracks 16 provided on the PCB surface.
  • the particular lay-out of conductors means that the pins 13 corresponding to contacts 1 and 2 may be connected to corresponding points on the connection block 15 by way of relatively short and direct tracks.
  • the pins 13 corresponding to each other pair of contacts can be connected to their respective portions of the connector blocks by relatively short and simple tracks. The short and simple tracks are spaced from each other by a significant distance and induced cross-talk between them is accordingly minimal .
  • Means are preferably provided for releasably latching the jack to the socket.
  • This can conveniently be provided by a spring loaded latch located on either the top or the bottom surface of the jack, or on one of the side surfaces.
  • a pair of spring loaded latches located on the top and the bottom of the jack, or on both sides of the jack may be provided for latching against corresponding abutment surfaces provided on the socket .
  • a single latch 17 is provided on the lower surface of the plug and engages an abutment 18 provided on the socket body to latch the plug in position.
  • each side of the plug there are, on each side of the plug, four positions which in a standard RJ45 plug would be occupied by contacts.
  • these contact positions may be left empty or may be occupied by contacts which can be utilized for purposes other than high frequency signal transmission.
  • the contacts other than contacts 1 -8 may be grounded or utilized in other ways to provide further reduction in cross-talk.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

L'invention concerne des prises mâle (9) et femelle destinées au transfert de données, comportant quatre paires de contacts (1-8), deux paires (1, 2 & 5, 6) étant situées d'un côté du corps (10) de la prise mâle et les deux autres paires étant situées de l'autre côté du corps de la prise mâle. Les paires de contacts sont espacées les unes des autres d'une distance supérieure à l'espacement des contacts de chacune des paires, les paires (1, 2 & 5, 6) du côté du corps de la prise mâle étant en quinconce par rapport aux paires (3, 4 & 7, 8) de l'autre côté du corps de la prise mâle. Chaque paire de contacts est connectée à une paire torsadée, par exemple un câble UTP. Cet arrangement permet de réduire la diaphonie inter-paires.
PCT/GB1998/003304 1997-11-04 1998-11-04 Prises male et femelle pour systemes de transmission de donnees WO1999023729A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP98967078A EP0976178A2 (fr) 1997-11-04 1998-11-04 Prises male et femelle pour systemes de Transmission de donnees
CA002276590A CA2276590A1 (fr) 1997-11-04 1998-11-04 Prises male et femelle pour systemes de transmission de donnees

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9723299A GB2332786B (en) 1997-11-04 1997-11-04 Plug and mating socket for data transmission systems
GB9723299.5 1997-11-04

Publications (1)

Publication Number Publication Date
WO1999023729A1 true WO1999023729A1 (fr) 1999-05-14

Family

ID=10821572

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/003304 WO1999023729A1 (fr) 1997-11-04 1998-11-04 Prises male et femelle pour systemes de transmission de donnees

Country Status (4)

Country Link
EP (1) EP0976178A2 (fr)
CA (1) CA2276590A1 (fr)
GB (1) GB2332786B (fr)
WO (1) WO1999023729A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1313178A3 (fr) * 2001-11-16 2004-12-15 Albert Ackermann GmbH & Co. KG Connecteur électrique pour la technologie de transfert de données
FR2924865A1 (fr) * 2007-12-10 2009-06-12 Integral Process Sarl Dispositif de connexion et systeme medical d'acquisition de signaux electriques equipe d'un tel dispositif de connexion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6080007A (en) * 1998-11-30 2000-06-27 Hubbell Incorporated Communication connector with wire holding sled

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993019500A1 (fr) * 1992-03-23 1993-09-30 Superior Modular Products, Inc. Systeme de connecteurs electriques a faible diaphonie
GB2271678A (en) * 1993-12-03 1994-04-20 Itt Ind Ltd Electrical connector with reduced crosstalk
WO1994021007A1 (fr) * 1993-03-12 1994-09-15 Poul Kjeldahl Connecteur de telecommunications
FR2723478A1 (fr) * 1994-08-08 1996-02-09 Connectors Pontarlier Embase pour connecteur electrique a faible diaphonie

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4679879A (en) * 1986-10-03 1987-07-14 Molex Incorporated Plug and receptacle connector assembly
JP2513017Y2 (ja) * 1990-07-30 1996-10-02 株式会社アドバンテスト 高周波多極コネクタ
US5224867A (en) * 1990-10-08 1993-07-06 Daiichi Denshi Kogyo Kabushiki Kaisha Electrical connector for coaxial flat cable
US5562479A (en) * 1993-08-31 1996-10-08 At&T Corp. Connector for unshielded twisted wire pair cables
US5599209A (en) * 1994-11-30 1997-02-04 Berg Technology, Inc. Method of reducing electrical crosstalk and common mode electromagnetic interference and modular jack for use therein

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993019500A1 (fr) * 1992-03-23 1993-09-30 Superior Modular Products, Inc. Systeme de connecteurs electriques a faible diaphonie
WO1994021007A1 (fr) * 1993-03-12 1994-09-15 Poul Kjeldahl Connecteur de telecommunications
GB2271678A (en) * 1993-12-03 1994-04-20 Itt Ind Ltd Electrical connector with reduced crosstalk
FR2723478A1 (fr) * 1994-08-08 1996-02-09 Connectors Pontarlier Embase pour connecteur electrique a faible diaphonie

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1313178A3 (fr) * 2001-11-16 2004-12-15 Albert Ackermann GmbH & Co. KG Connecteur électrique pour la technologie de transfert de données
FR2924865A1 (fr) * 2007-12-10 2009-06-12 Integral Process Sarl Dispositif de connexion et systeme medical d'acquisition de signaux electriques equipe d'un tel dispositif de connexion
WO2009103873A3 (fr) * 2007-12-10 2009-10-22 Integral Process Dispositif de connexion et système médical d'acquisition de signaux électriques équipé d'un tel dispositif de connexion
US8313339B2 (en) 2007-12-10 2012-11-20 Integral Process Connection device and medical system for acquiring electric signals provided with such a connection device

Also Published As

Publication number Publication date
EP0976178A2 (fr) 2000-02-02
CA2276590A1 (fr) 1999-05-14
GB2332786A (en) 1999-06-30
GB2332786B (en) 2001-10-10
GB9723299D0 (en) 1998-01-07

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