EP0727849A2 - Assemblage d'une prise-jack blindée - Google Patents

Assemblage d'une prise-jack blindée Download PDF

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Publication number
EP0727849A2
EP0727849A2 EP96300953A EP96300953A EP0727849A2 EP 0727849 A2 EP0727849 A2 EP 0727849A2 EP 96300953 A EP96300953 A EP 96300953A EP 96300953 A EP96300953 A EP 96300953A EP 0727849 A2 EP0727849 A2 EP 0727849A2
Authority
EP
European Patent Office
Prior art keywords
jack socket
shielding
socket assembly
shielded
conductive plate
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.)
Withdrawn
Application number
EP96300953A
Other languages
German (de)
English (en)
Other versions
EP0727849A3 (fr
Inventor
Richard Weatherley
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0727849A2 publication Critical patent/EP0727849A2/fr
Publication of EP0727849A3 publication Critical patent/EP0727849A3/fr
Withdrawn legal-status Critical Current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
    • H01R13/46—Bases; Cases
    • H01R13/516—Means for holding or embracing insulating body, e.g. casing, hoods
    • H01R13/518—Means for holding or embracing insulating body, e.g. casing, hoods for holding or embracing several coupling parts, e.g. frames
    • 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
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • 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
    • H01R13/6582—Shield structure with resilient means for engaging mating connector
    • 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]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
    • 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]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6596—Specific features or arrangements of connection of shield to conductive members the conductive member being a metal grounding panel
    • 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
    • H01R24/62—Sliding engagements with one side only, e.g. modular jack coupling devices
    • H01R24/64—Sliding engagements with one side only, e.g. modular jack coupling devices for high frequency, e.g. RJ 45
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/2458—Electrical interconnections between terminal blocks
    • H01R9/2466—Electrical interconnections between terminal blocks using a planar conductive structure, e.g. printed circuit board

Definitions

  • This invention relates to a shielded jack socket assembly, that is to say jack socket assembly which incorporates shielding material to provide electromagnetic shielding to at least some element of the assembly.
  • jack socket assembly means an assembly comprising a printed circuit board having mounted on one face thereof a jack socket and mounted on the other face thereof at least one terminal for connection to a wire, the PCB providing a connection between the terminal and at least one contact of the jack socket.
  • Jack socket assemblies are commonly used in installations where a releasable wiring connection is required. Often, a multiplicity of jack socket assemblies are mounted on a rack for receipt of a corresponding multiplicity of jack plugs to provide connections to cabling connected to the terminals of the jack socket assemblies.
  • shielding is arranged around some part of the assembly and the shielding is connected to earth and to any shielding provided around the conductors of the incoming cable.
  • Shielding arrangements of the prior art have, in general, been relatively time consuming to assemble resulting in a substantial increase in the time required to assemble a shielded set of jack socket assemblies as compared with the time required for assembling a corresponding set of unshielded assemblies in a similar installation.
  • the present invention in one embodiment, provides a shielded jack socket assembly which is particularly quick and easy to assemble and in particular is particularly easy to connect to the shielding of an incoming cable.
  • a shielded jack socket assembly comprises a jack socket assembly (as hereinbefore defined) and a shielding can providing electromagnetic shielding to at least some part of the jack socket assembly, wherein the shielding can includes a tang which, in use, cooperates with a portion of the jack socket assembly to form an electrical terminal for receipt of a wire to provide an electrical connection between the wire and the can.
  • the tang includes a generally keyhole shaped opening comprising a relatively large aperture and a tapering slot extending from the aperture whereby a wire may readily be passed through the aperture and then pulled sideways into the slot to form an interference fit with the material of the tang.
  • a portion of the jack socket assembly houses the tang and supports the tang against deformation during insertion and locking of a wire.
  • the jack socket assembly adjacent the tang is moulded in a manner to provide a tapered lead-in to the aperture, thereby facilitating rapid insertion of a wire into the aperture.
  • the wire may, for example, be a drain wire extending from the shielding of an incoming cable and accordingly by inserting the drain wire through the aperture and pulling it sideways to lock into the slot a rapid and reliable electrical connection between the drain wire and the can is established.
  • the shielded jack socket assembly comprises, in addition to the shielding can referred to above, a second shielding can which shields a portion of the jack socket assembly located on the opposite side of the PCB from the first mentioned shielding can.
  • the first shielding can may be positioned to shield the jack socket whilst the second shielding can is positioned to shield the terminals and other components of the jack socket assembly on the side of the PCB remote from the jack socket.
  • the first and second shielding cans include mutually interengaging and cooperating components such that when the cans are positioned they are automatically electrically connected to each other by the engagement of corresponding portions of the cans.
  • the jack socket assembly provides means which cooperate with one of the, or with each, can to provide a snap fit location of one of the or of each can such that positioning of the or each can in its operative position automatically snap fit engages the can with the jack socket assembly.
  • a multiplicity of jack socket assemblies are mounted side by side on a common rack.
  • the rack preferably includes a conductive plate adjacent the jack socket assemblies and a spring clip connected to the conductive plate at the location of each jack socket assembly to provide for an automatic electrical connection between the conductive plate and the or one of the shielding cans when the jack socket assembly is snapped into position.
  • the mounting rack for the jack socket assemblies may, for example, be generally as illustrated in Figure 1 of U.K. patent publication GB-A-2274027 in which case the conductive plate can conveniently be located against the inner face of the generally U-shaped plastics retaining clip illustrated in that Figure.
  • the conductive plate is itself generally U-shaped and nests within the generally U-shaped clip. This arrangement ensures that the or each shielding can is automatically connected to the conductive plate as the jack socket assemblies are snapped into position. This provides electrical interconnection between the shielding cans and, if the conductive plate is earthed, provides an earth connection to the shielding cans.
  • the spring clips associated with the conductive plate can be removed and, when the clips are removed, no electrical connection will be present between the cans and the conductive plate when the jack socket assemblies are in their use position.
  • Such an arrangement allows considerable flexibility of installation allowing the installer to provide either an earth connection to the or each can of a particular shielded jack socket assembly or no earth connection, according to whether or not the spring clip is left in position or removed.
  • the present invention is also concerned with a means of providing an electrical connection to the shielding of a shielded electric cable.
  • Shielded electric cables are commonly used for data transmission and it is well known to provide the data carrying conductors of the cable with a shielding comprising a mesh or film of electrically conductive material which surrounds the data carrying conductors and is itself covered with the outer plastics sheath of the cable.
  • a shielding comprising a mesh or film of electrically conductive material which surrounds the data carrying conductors and is itself covered with the outer plastics sheath of the cable.
  • In order to provide an electrical connection to the shielding it is conventional to strip the outer plastics sheath from the cable adjacent the termination of the cable and provide an appropriate connection to the sheath at that point.
  • this arrangement is not wholly satisfactory especially in cases where the shielding is provided by a metal film or a carrier having deposited thereon a metal film.
  • some form of clamp must be provided to give an adequate electrical connection to the shielding, and the provision of
  • a method of forming an electrical connection to the shielding of an electric cable comprising providing a conductive metal plate having at least one aperture therein, stripping outer insulation from the cable to expose a portion of the shielding; and clipping the stripped portion of the cable to the conductive plate using a clip which straddles the stripped portion of the cable and engages the aperture in the conductive plate to hold the shielding in firm electrical contact with the conductive plate.
  • a single aperture is provided in the conductive plate for each cable, the aperture having a width equal to or somewhat greater than the diameter of the cable after the sheathing has been removed.
  • the clip can be designed to engage opposite faces of the aperture to hold the stripped cable against the conductive plate.
  • the cable may be slightly deformed at the point of clipping so that opposite edges of the aperture will dig slightly into the material of the shielding to provide good electrical contact therewith.
  • a short length of stiff plastics channel is located between the clip and the shielding to prevent abrasion of the shielding by the clip and to spread the clamping force applied by the clip over a relatively long portion of the shielding.
  • the jack socket assembly comprises a printed circuit board 2 which has secured, to the underside thereof as viewed in Figure 1, a jack socket.
  • the opposite side of the PCB has secured thereto a plastics moulding 20 which houses appropriate conductors to form eight "Krone" terminals 3 to which are secured individual wires 4 of a cable 5.
  • the terminals 3 provide, via circuitry mounted on the PCB, connections between the conductors of the cable 5 and the terminals of the jack socket.
  • the incoming cable 5 is secured to a cable management clip 6 (which is part of the moulding 20) by suitable means, (e.g. a cable clip) and is of the "shielded" type, i.e. it incorporates a shielding layer of metal surrounding the wires 4 and beneath the outer sheath of the cable.
  • a so-called “drain wire” 7 extends through the cable 5 in contact with the shielding thereof and provides a means by which an electrical connection to the shielding can be obtained.
  • a shielding can 8 substantially encloses the jack socket.
  • the shielding can includes an end face 9 which includes an opening through which a jack plug can be inserted to engage the jack socket.
  • the opposite end 10 of the can forms an open mouth enabling the can to be telescoped over the jack socket.
  • the upper 11 and lower 12 faces of the can are substantially imperforate.
  • the two side faces 13 of the can (only one of which is shown in the drawings) each incorporate a generally C-shaped slot 14 so that the inner part of the face forms a tongue-like projection 15.
  • the body of the jack socket is moulded from plastics material and incorporates, on each side thereof, a raised bar 16.
  • the arrangement is such that as the can 8 is telescoped over the jack socket the tongues 15 will be cammed outwardly by the bars 16 until the bars 16 snap into the base of the generally C-shaped grooves 14.
  • This arrangement enables the can to be positively located and snap fitted onto the jack socket by simple telescopic movement.
  • the can if necessary, be removed by prising the tongues 15 outwardly to clear the bars 16 and then withdrawing the can from the jack socket.
  • the can 8 is formed with an integral tang 17 which projects from one of the side faces 13.
  • the tang includes an opening formed by a relatively large aperture 18 and a slot 19 which extends from the aperture 18 and tapers inwardly away from the aperture 18.
  • the tang passes through an opening provided in the PCB and into a slot provided in the plastic moulding 20.
  • the opening formed by the aperture 18 and slot 19 is in register with a corresponding opening 21 provided in the plastics moulding.
  • the plastic moulding On the opposite side of the tang 17 to the opening 21 the plastic moulding provides a tapering chute like recess 22 which is shaped into position to ensure that a wire, pushed down the base of the recess 22, will be directed through the aperture 18 of the tang and out through the opening 21.
  • the shape of the opening 21 is such that a wire so inserted can be pulled (as by a pair of pliers) perpendicularly away from the plane of the PCB 2 to bring the wire into the slot 19 and into a corresponding slot of the opening 21.
  • the design of the slots is such that when so positioned the wire will form an electrical contact with the tang 17 and will be retained in position by the plastics material of the moulding 20.
  • the above described arrangement provides a particularly easy system for electrically connecting the drain wire 7 to the can 8. More particularly, the can 8 is first positioned over the jack socket as described above and the drain wire 7 is then slid down the recess 21 through the aperture 18 and through the opening 21. The exposed end is then grasped as by a pair of pliers and the wire is pulled vertically upwards away from the plain of the PCB 2 to form the required electrical connection and secure the wire in position. The exposed end portion of the wire may then be cut off.
  • a rear shielding can 23 ( Figure 3) is preferably assembled over the moulding 20.
  • the can 23 includes a pair of tangs 24 projecting from opposite side faces thereof.
  • apertures 25 Figure 1 provided in the moulding 20 to snap-fit into engagement with a ridge provided on the inside of a tongue 26 of the moulding 20.
  • the tangs 24 are trapped between the tongues 26 and spring fingers 15A provided on opposite side faces of the can 8. Accordingly, as the can 23 is pushed home electrical connection is automatically effected with the can 8.
  • a multiplicity of shielded jack socket assemblies 1 may be mounted on the plastic spring clip as illustrated in Figure 1 of GB-A-2274027.
  • the plastic clip of Figure 1 of GB-A-2274027 has nested in the interior thereof a channel-shaped conductive plate 27.
  • the plate 27 includes apertures 28 which are slightly larger in size than the apertures provided in the U-shaped plastics clip of Figure 1 of GB-A-2274027 so that when the PCB 2 is clipped into position between the legs of the U-shaped clip the shielding can 8 is received in the aperture in the plastic clip and passes as a clearance fit through the aperture 28 in the contact plate 27.
  • a spring clip 29 may be secured to the conductive plate 27 to effect an automatic electrical connection between the plate 27 and the can 8 as the shielded jack socket assembly is snapped into position in the generally U-shaped plastic clip.
  • the clip 29 includes a jaw portion 30 which may be positioned to grip either flange 31 of the conductive plate 27, and a contact portion 32 which extends upwardly from the jaw portion 30 to engage the can 8 as the shielded jack socket assembly is slipped into position.
  • the clip 29 is made from suitable resilient metal so that it will both maintain its grip on the flange 31 and maintain its resilient contact with the can 8 in use.
  • the conductive plate 27 is supplied with a clip 29 positioned corresponding to each aperture 28 and, if for some reason electrical contact between the can 8 and the contact plate 27 is not required in relation to any particular shielded jack socket assembly, the clip corresponding to that assembly is removed during installation.
  • each jack socket assembly cans 8 and 23 of each jack socket assembly to be electrically connected to the conductive plate 27 during installation of the jack socket assemblies.
  • the conductive plate itself may be connected to earth.
  • the cans 8, 23 may be formed from any suitable material and are preferably formed as metal pressings of appropriate material.
  • the cable 5 is anchored to the chassis of the equipment in which the jack socket assembly connected to it is installed a few centimetres from the jack socket assembly itself.
  • the equipment preferably comprises a further conductive plate 33 to which the cable 5 is secured by means of a saddle clip 34.
  • the clip 34 includes a pair of legs 35 which snap into locking engagement with a corresponding aperture 36 provided in the conductive plate 33.
  • the illustrated cable 5 is already clipped to the conductive plate.
  • the aperture 36 for the adjacent cable is shown and the clip 34 for use in securing the adjacent cable is shown above its corresponding aperture 36.
  • each cable 5 is stripped in the vicinity of the plate 33 to expose a portion of the shielding of the cable.
  • the clip 34 is dimensioned relative to the cable such that, when the stripped portion of the cable is laid against the plate 33 and the clip 34 pushed home the core of the cable (comprising the conductors and the shielding) will be slightly distorted and will be pushed, to some extent, into the aperture 36.
  • the effect of this arrangement is that the relatively sharp edges of the aperture will dig into the shielding of the cable to provide good electrical connections between the shielding and the conductive plate 33.
  • the conductive plate 33 is preferably connected to system earth.
  • a moulded or extruded plastics saddle 37 is preferably positioned between the clip 34 and the stripped portion of the cable.
  • An installation comprising all the above shielding and earthing features, namely the can 8, the can 23, the conductive plate 27, the clip 29, the conductive plate 33 and the clip 34 provides a particularly high level of shielding and reliable earth connections.
  • the various connections required to earth the can 8, the can 23 and the cable shield are, however, automatically effected during the course of assembly of the components and accordingly no extra assembly time is required in order to ensure the necessary earth connections.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP96300953A 1995-02-14 1996-02-12 Assemblage d'une prise-jack blindée Withdrawn EP0727849A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9502888 1995-02-14
GB9502888A GB2298089B (en) 1995-02-14 1995-02-14 Shielded jack socket assembly

Publications (2)

Publication Number Publication Date
EP0727849A2 true EP0727849A2 (fr) 1996-08-21
EP0727849A3 EP0727849A3 (fr) 1997-10-15

Family

ID=10769589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96300953A Withdrawn EP0727849A3 (fr) 1995-02-14 1996-02-12 Assemblage d'une prise-jack blindée

Country Status (2)

Country Link
EP (1) EP0727849A3 (fr)
GB (1) GB2298089B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0969562A1 (fr) * 1998-07-01 2000-01-05 Siemens Aktiengesellschaft Système de prise de connection pour le transfer de données et les composants de ce système
EP3223372A1 (fr) * 2014-01-20 2017-09-27 Reichle & De-Massari AG Dispositif de connecteur à fiche

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9610020D0 (en) * 1996-05-14 1996-07-17 Weatherley Richard Shielded jack socket assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5108300A (en) * 1991-04-16 1992-04-28 Amp Incorporated Electrical connector with interlocked components
EP0570893A1 (fr) * 1992-05-19 1993-11-24 The Whitaker Corporation Connexion de fil de drain avec une blindage d'un connecteur électrique
FR2694456A1 (fr) * 1992-07-31 1994-02-04 Pouyet Int Prise femelle de type "modular jack" et à connectique intégrée.
EP0598614A2 (fr) * 1992-11-18 1994-05-25 Richard Weatherley Assemblage de prise

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5108300A (en) * 1991-04-16 1992-04-28 Amp Incorporated Electrical connector with interlocked components
EP0570893A1 (fr) * 1992-05-19 1993-11-24 The Whitaker Corporation Connexion de fil de drain avec une blindage d'un connecteur électrique
FR2694456A1 (fr) * 1992-07-31 1994-02-04 Pouyet Int Prise femelle de type "modular jack" et à connectique intégrée.
EP0598614A2 (fr) * 1992-11-18 1994-05-25 Richard Weatherley Assemblage de prise

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0969562A1 (fr) * 1998-07-01 2000-01-05 Siemens Aktiengesellschaft Système de prise de connection pour le transfer de données et les composants de ce système
EP3223372A1 (fr) * 2014-01-20 2017-09-27 Reichle & De-Massari AG Dispositif de connecteur à fiche
EP3229325A1 (fr) * 2014-01-20 2017-10-11 Reichle & De-Massari AG Dispositif de connecteur à fiche
JP2018041748A (ja) * 2014-01-20 2018-03-15 ライヒレ・ウント・デ−マッサーリ・アクチェンゲゼルシャフトＲｅｉｃｈｌｅ ＆ Ｄｅ−Ｍａｓｓａｒｉ Ａｇ 差込み式コネクタ装置
US10122135B2 (en) 2014-01-20 2018-11-06 Reichle & De-Massari Ag Plug connector device having a wiring block with at least one receiving region

Also Published As

Publication number Publication date
EP0727849A3 (fr) 1997-10-15
GB2298089A (en) 1996-08-21
GB9502888D0 (en) 1995-04-05
GB2298089B (en) 1999-02-24

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