EP0687037A1 - Dispositif de blindage entre plusieurs câbles blindés et un connecteur - Google Patents

Dispositif de blindage entre plusieurs câbles blindés et un connecteur Download PDF

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Publication number
EP0687037A1
EP0687037A1 EP94201656A EP94201656A EP0687037A1 EP 0687037 A1 EP0687037 A1 EP 0687037A1 EP 94201656 A EP94201656 A EP 94201656A EP 94201656 A EP94201656 A EP 94201656A EP 0687037 A1 EP0687037 A1 EP 0687037A1
Authority
EP
European Patent Office
Prior art keywords
shielding
connector
shieldings
arrangement according
cables
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.)
Granted
Application number
EP94201656A
Other languages
German (de)
English (en)
Other versions
EP0687037B1 (fr
Inventor
Ronald Nagtegaal
Pieter Hendrik Oskam
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.)
Fokker Technology BV
Original Assignee
Fokker Aircraft BV
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 Fokker Aircraft BV filed Critical Fokker Aircraft BV
Priority to DE69416112T priority Critical patent/DE69416112T2/de
Priority to EP94201656A priority patent/EP0687037B1/fr
Publication of EP0687037A1 publication Critical patent/EP0687037A1/fr
Priority to HK98111194A priority patent/HK1010770A1/xx
Application granted granted Critical
Publication of EP0687037B1 publication Critical patent/EP0687037B1/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
    • 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
    • H01R13/6593—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable the shield being composed of different pieces
    • 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
    • H01R13/65912—Specific features or arrangements of connection of shield to conductive members for shielded multiconductor cable
    • H01R13/65918—Specific features or arrangements of connection of shield to conductive members for shielded multiconductor cable wherein each conductor is individually surrounded by shield
    • 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
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables

Definitions

  • the present invention relates to a shielding arrangement between several shielded cables and a connector, each shielded cable comprising at least one conductor within a shielding, the arrangement comprising electrically conductive, hose shaped shielding means comprising a first end and a second end, which first end is electrically conductively connected to an electrically conductive body of the connector and which second end is electrically conductively connected to each, partly stripped shielding of each shielded cable by first clamping means, each stripped shielding being inserted into said second end of the hose shaped shielding means.
  • FIG. 1 shows several cables 1 which may be or may not be kept together by an outer insulating jacket (not shown).
  • Each of the cables 1 comprises at least one wire 6 each provided with an insulating jacket. All wires 6 within one cable 1 are shielded by a braid entirely enclosing the wires within the cable. Such braids are electrically conductive and known to persons skilled in the art.
  • Figure 1 also shows a connector 4 to which the cables 1 are to be connected.
  • the wires 6 extend into the connector 4 and their conductors (not shown) are connected to the contact members (not shown) e.g by soldering as is known to persons skilled in the art.
  • the outer body of the connector 4 may be made of conducting metal to provide a shielding ground contact.
  • the body of the connector 21 may also be made of an insulating material coated with a conductive coating as is known to persons skilled in the art.
  • FIG. 1 shows that such a body of connector 4 is connected to all wire shieldings 2 by the "pigtail-method". All outer jackets of cables 1 are stripped. Each stripped shielding 2 is first flattened and then more or less pressed into a "pigtail" type of wire 2. Each of those pigtail wires 2 is put into one side of a conductive cable connection 5 which at its other end receives a grounding wire 7 connected to the electrically conductive body of the connector 4. The cable connection 5 is pressed together in order to make good electrical contact to both the pigtail wires 2 and to the grounding wire 7. A solder sleeve 3 may be used at the end of each stripped away outer jacket of each cable 1 to protect each cable from mechanical damage.
  • a disadvantage of the pigtail technique according to figure 1 is that all wires 6 are not protected against electromagnetic interference between the solder sleeves 3 and the connector 4.
  • FIG. 2 a connector 11 to be connected to a cable 16 is shown.
  • the cable 16 comprises several wires 17 which are individually shielded by conductive braids or shielded by conductive braids in groups of two or more wires.
  • the cable 16 is stripped in a known manner to strip an appropriate length of each wire 17.
  • Each stripped length of wire is stripped to strip a predetermined length of each respective braid.
  • Each stripped length of braid is flattened and pressed together to form a pigtail type of wire 14.
  • Each pigtail wire 14 is bent away in a radial direction from the cable 16 after the stripped part of the cable 16 is fed through a tag ring nut 15. Then the stripped parts of the wires 17 are fed through a back shell 12, as shown in Figure 2a, until the body of the back shell 12 engages the bent away pigtail wires 14, as shown in Figure 2b. Lugs 13 are extending from the body of the back shell 12. There are as many lugs 13 as there are pigtail wires 14. Each pigtail wire 14 is guided into a slot between two adjacent lugs 13.
  • each wire 17 may be connected to a corresponding contact member of the connector in a manner known to persons skilled in the art.
  • An advantage of the pigtail technique according to Figures 2a, 2b and 2c is that the terminals of the wires 17 from which the braids are stripped away are still shielded against electro magnetic interference by the conductive body comprising the tag ring nut 15, the back shell 12 and the connector 11 when these latter three parts are connected together.
  • a disadvantage is that the number of wires 17 that can be protected by the back shell 12 mainly depends on the size of the back shell 12 and the number of slots between the lugs 13.
  • a further disadvantage of the pigtail technique according to Figures 2a, 2b and 2c is that the clamping action between the tag ring nut 15 and the back shell 12 to clamp the pigtail wires 14 is not very shock-resistant. Especially in airplanes in which electrical connections must be extremely reliable and extremely shock-resistant the application of the pigtail technique according to Figures 2a, 2b and 2c is not always satisfactory.
  • the main object of the present invention is to provide a shielding arrangement between several shielded cables and a connector, which is very reliable both from a mechanical and an electrical point of view, and is very shock-resistant.
  • a further object is to provide a shielding arrangement between several shielded cables and a connector, which offers great flexibility in the number and dimensions of the cables to be connected to the connector and to be shielded by the shielding arrangement.
  • the object of the present invention is obtained by a shielding arrangement between several shielded cables and a connector of the type mentioned above, which is characterized in that the electrically conductive, hose shaped shielding means is made of flexible, electrically conductive material and that a flexible, electrically conductive tape is firmly wound around the bundled shieldings, that still enclose their respective conductors, by second clamping means in order to establish good electrical contact between all stripped shieldings.
  • a first clip binding is provided to clamp the flexible shielding means to the connector.
  • a metal clip binding provides an excellent electrical contact between the hose shaped flexible shielding means and the connector.
  • the first clamping means is constituted by a second clip binding arranged around the second end of the shielding means receiving the stripped shieldings of the shielded cables.
  • a clip binding exerts a predetermined pressing force on the hose shaped shielding means and, therefore, provides for an excellent electrical contact between the hose shaped shielding and the shieldings of the cables.
  • the second clamping means is constituted by a third clip binding.
  • the second clamping means that clamps the flexible tape, is formed by the first clamping means.
  • one clamping means may be omitted, thereby, saving costs and weight in each connection, which is an essential feature in especially airplanes.
  • the hose shaped shielding means may comprise a braided hose.
  • the flexible tape may comprise a braided, electrically conductive tape.
  • the application of a braided tape has several advantages. First of all, the braided tape is able to fill up open spaces in the bundled shieldings of the cables with pieces of the braided tape, which is partly pressed into said shieldings by the second clamping means in order to establish as many points of electrical contact as possible between all shieldings.
  • the shieldings of the cables are bundled the shieldings at the outside of the bundle do not touch each other but leave open spaces: these spaces are filled with the braided, electrically conductive tape, thereby enhancing the shielding effectiveness.
  • the clamping force of a preferably applied second clip binding around the braided tape is spread as to establish a good mutual electrical contact between all shieldings and between the shieldings and the braided tape.
  • a connector adapter is may be provided between the connector and the hose shaped shielding means.
  • the second end of the hose shaped shielding may be clamped to the shielded cables by an insulating shrink sleeve.
  • At least one unshielded cable may be connected to the connector and may be received by the hose shaped shielding means.
  • the shielding arrangement between several cables and a connector according to figure 3a comprises a braided, electrically conductive hose 24, a clip binding 23, a further clip binding 28, a still further clip binding 30 and a braided, electrically conductive tape 29.
  • the braided hose 24 may be of a type disclosed in United States Patent 4,896,402 assigned to Band-It-IDEX, Inc.
  • the braided hose 24 may be substituted by any hose of any flexible, electrically conductive material.
  • the braided hose 24 may be substituted by any hose of flexible, durable non-conductive material which is entirely coated with an electrically conductive coating in order to provide the desired shielding effect and to establish the required electrical connection to both the connector 21 and shieldings 27 of cables 20.
  • the clip bindings 23, 28 are "Band-It" clamping bands disclosed in United States Patent 4,896,402 mentioned above.
  • the clip bindings 23, 28 may be of any other type the only restriction being that they are electrically conductive and very durable and reliable in the assembled state.
  • one end of the braided hose 24 is fixed by the clip binding 23 to a connector adapter 22 which is preferably provided with a recess to receive that end of the braided hose 24 and to provide for a good immovable clamping action.
  • the connector adapter 22 is mechanically and electrically connected to the connector 21, e.g., by threads 38.
  • the adapter 22 is optional and may be omitted. In the latter case the connector may be provided with an appropriate recess to receive the end of the braided hose 24 and the clip binding 23.
  • clamping means 30 is, preferably, a "Band-It" clamping band like the clip bindings 23, 28. Such a clip binding exerts a very good pressing force.
  • Each of the shieldings 27 enclose one or more insulated conductors 37. To strip the shieldings 27 insulating outer jackets 33 of the cables 20 are removed along a predetermined length by means known to persons skilled in the art. The stripped shieldings 27 are bundled and the braided tape 28 is wound around the shieldings 27.
  • the clamping means 28 is installed and, then, the bundled shieldings 27 are inserted into the open end of the braided hose 24, deep enough to enclose part of the bundled shieldings 27. Then, the clamping means 30 is installed over the braided hose 24 and provided with the desired clamping pressure in order to press the shieldings 27 together to establish a firm electrical contact between all shieldings 27 and the braided hose 24.
  • An important object of providing the braided tape 29 between the clip binding 28 and the shieldings 27 is to fill up open spaces in the shieldings 27 with pieces of the braided tape 29, which is partly pressed into said shieldings 27 by the second clip binding 28, in order to establish as many points of electrical contact as possible between all shieldings 27.
  • the braided tape 29 may be unraveled somewhat to provide for loose pieces which can be easily pressed into the shieldings 27.
  • the braided tape 29 may be of a type disclosed by European Patent Application 0,549,942.
  • This Patent Application shows the application of a braided tape (14) wound around a stripped shielding of a medium voltage cable which is to be connected to another cable. Both of these cables comprise one conductor only.
  • the purpose of the known braided tape is to establish an electrical intermediate between the stripped shielding of one cable and an intermediate flexible shielding plate to which the braided tape is fixed.
  • This Patent Application does not suggest to use such a braided tape together with a clip binding and hose shaped shielding means.
  • this Patent Application does not suggest to use such a braided tape to enhance the inter-electrical contact between several shieldings by pressing such a braided tape wound around the bundled shieldings into the shieldings.
  • the braided tape 29 may be substituted by any other type of flexible, electrically conductive tape which is able to firmly press the bundled shieldings 27 to one another and to protect the shieldings 27 against the sharp edges of clip binding 28.
  • a braided tape made of thin metal wires is very suitable for the intended purpose, especially when the braided is somewhat unravelled before installation.
  • Each cable 20 comprises at least one conductor 37 to be connected to a contact member (not shown in figures 3a, 3b or 4) of the connector 21.
  • These contact members may be male, female or hermaphrodite. If there are several conductors within a cable they may be twisted.
  • Several conductors 37 extending from the shieldings 27 may be connected together by a conductor connection 25 from which one or more conductors extend to respective, predetermined contact members (not shown) in the connector 21.
  • unshielded cables 34 may be easily connected to the same connector 21. They outer jacket of such unshielded cables 34 may extend into the braided hose 24 as far as the shieldings 27 of the shielded cables 20, as shown in Figures 3a and 3b.
  • a shrink sleeve 32 enclosing both the end of the braided hose 24 and the outer jackets 33 of the cables 20 may be provided.
  • Figure 3b shows an alternative embodiment of the present invention.
  • the braided tape 29 is still provided between the outer hose 24 and the shieldings 27 of the cables 20 but is clamped to the shieldings 27 by the clamping means 30 to guarantee a firm mechanical and electrical contact.
  • the clamping means 30 is arranged outside the braided hose 24 as in the arrangement according to Figure 3a. Since the braided tape 29 is firmly wound around the bundled shieldings 27 this arrangement provides for a better electrical contact between the shieldings 27 and the hose 24 than the arrangement of Figure 3a, especially when the braided tape 29 is somewhat unravelled before installation as explained above.
  • the clip binding 28 is omitted, thereby reducing costs and weight which is an essential feature in airplanes.
  • the shieldings 27 may extend deeper into the braided hose 24 than shown in Figures 3a, 3b. Besides, as the case may be, only those parts of the shieldings 27 may be stripped by stripping away the outer jackets 33 that will be located directly under the braided tape 29. In the latter case still insulated parts of the shieldings 27 will extend into the braided hose 24 and the stripped parts of the shieldings 27 will only be intermediate parts between insulated parts.
  • Figures 3a, 3b and 4 diagrammatically show a cylindrical type of connector 21.
  • the present invention is not restricted to cylindrical connectors only.
  • the invention may be applied to connectors with a conductive body of any shape and any type.
  • the bundled cables 20, 34 may have different dimensions, since there is no element of the shielding arrangement which limits the dimensions of the cables 20, 34 to strict predetermined ranges.
  • the bundled cables 20, 34 may also have different numbers of conductors 37. Therefore, the shielding arrangement according to the invention provides for great flexibility in connecting different kinds of cables to different kinds of connectors, while still offering a very good shielding against electromagnetic interference.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP94201656A 1994-06-09 1994-06-09 Dispositif de blindage entre plusieurs câbles blindés et un connecteur Expired - Lifetime EP0687037B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69416112T DE69416112T2 (de) 1994-06-09 1994-06-09 Abschirmvorrichtung zwischen mehreren abgeschirmten Kabeln und einem Verbinder
EP94201656A EP0687037B1 (fr) 1994-06-09 1994-06-09 Dispositif de blindage entre plusieurs câbles blindés et un connecteur
HK98111194A HK1010770A1 (en) 1994-06-09 1998-10-12 Shielding arrangement between several shielding cables and a connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94201656A EP0687037B1 (fr) 1994-06-09 1994-06-09 Dispositif de blindage entre plusieurs câbles blindés et un connecteur

Publications (2)

Publication Number Publication Date
EP0687037A1 true EP0687037A1 (fr) 1995-12-13
EP0687037B1 EP0687037B1 (fr) 1999-01-20

Family

ID=8216938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94201656A Expired - Lifetime EP0687037B1 (fr) 1994-06-09 1994-06-09 Dispositif de blindage entre plusieurs câbles blindés et un connecteur

Country Status (3)

Country Link
EP (1) EP0687037B1 (fr)
DE (1) DE69416112T2 (fr)
HK (1) HK1010770A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998049752A1 (fr) * 1997-04-25 1998-11-05 Amphenol-Tuchel Electronics Gmbh Dispositif de raccordement a blindage
EP1037327A1 (fr) * 1999-03-15 2000-09-20 Sumitomo Wiring Systems, Ltd. Construction mise à la masse pour une pluralité de cables blindés et procédé de fabrication de la même
US7530847B2 (en) 2006-12-08 2009-05-12 Caterpillar Inc. Impact-resistant, high-strength, braided wiring harness
EP2779315A1 (fr) * 2013-03-15 2014-09-17 Thales Procédé de reprise des blindages des câbles d'un toron sur un connecteur électrique et ensemble de connexion d'un toron
WO2018220322A1 (fr) * 2017-05-30 2018-12-06 Safran Electrical & Power Blindage électromagnétique pour extrémité de câbles blindés
FR3068526A1 (fr) * 2017-06-30 2019-01-04 Safran Aircraft Engines Harnais electrique
WO2022174866A1 (fr) * 2021-02-18 2022-08-25 HARTING Automotive GmbH Douille de charge pour accumulateur d'énergie électrique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7083471B2 (en) * 2003-06-18 2006-08-01 Autonetworks Technologies, Ltd. Connecting structure of connector, shield connector and lever type connector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160465A2 (fr) * 1984-04-23 1985-11-06 G & H Technology, Inc. Jonction de câble et connecteur à écran
GB2199198A (en) * 1986-11-29 1988-06-29 Kern Electrical Components Lim Backshell for screened multicore cable connectors
US4896402A (en) * 1988-02-05 1990-01-30 Band-It-Idex, Inc. Cable tie
WO1990001225A1 (fr) * 1988-07-28 1990-02-08 Bowthorpe-Hellermann Limited Agencement de mise a la terre de cables blindes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160465A2 (fr) * 1984-04-23 1985-11-06 G & H Technology, Inc. Jonction de câble et connecteur à écran
GB2199198A (en) * 1986-11-29 1988-06-29 Kern Electrical Components Lim Backshell for screened multicore cable connectors
US4896402A (en) * 1988-02-05 1990-01-30 Band-It-Idex, Inc. Cable tie
WO1990001225A1 (fr) * 1988-07-28 1990-02-08 Bowthorpe-Hellermann Limited Agencement de mise a la terre de cables blindes

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998049752A1 (fr) * 1997-04-25 1998-11-05 Amphenol-Tuchel Electronics Gmbh Dispositif de raccordement a blindage
EP1037327A1 (fr) * 1999-03-15 2000-09-20 Sumitomo Wiring Systems, Ltd. Construction mise à la masse pour une pluralité de cables blindés et procédé de fabrication de la même
US6246001B1 (en) 1999-03-15 2001-06-12 Sumitomo Wiring Systems, Ltd. Method for manufacturing a grounding construction for a plurality of shielded cables and a grounding construction
US7530847B2 (en) 2006-12-08 2009-05-12 Caterpillar Inc. Impact-resistant, high-strength, braided wiring harness
EP2779315A1 (fr) * 2013-03-15 2014-09-17 Thales Procédé de reprise des blindages des câbles d'un toron sur un connecteur électrique et ensemble de connexion d'un toron
US20140273630A1 (en) * 2013-03-15 2014-09-18 Thales Method for re-establishing the shielding of the cables of a strand on an electrical connector and assembly for connecting a strand
US9583883B2 (en) * 2013-03-15 2017-02-28 Thales Method for re-establishing the shielding of the cables of a strand on an electrical connector and assembly for connecting a strand
WO2018220322A1 (fr) * 2017-05-30 2018-12-06 Safran Electrical & Power Blindage électromagnétique pour extrémité de câbles blindés
FR3067177A1 (fr) * 2017-05-30 2018-12-07 Safran Electrical & Power Blindage electromagnetique pour extremite de cables blindes
FR3068526A1 (fr) * 2017-06-30 2019-01-04 Safran Aircraft Engines Harnais electrique
WO2022174866A1 (fr) * 2021-02-18 2022-08-25 HARTING Automotive GmbH Douille de charge pour accumulateur d'énergie électrique

Also Published As

Publication number Publication date
HK1010770A1 (en) 1999-06-25
DE69416112D1 (de) 1999-03-04
DE69416112T2 (de) 1999-08-12
EP0687037B1 (fr) 1999-01-20

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