EP0203751A2 - Raccord électrique - Google Patents

Raccord électrique Download PDF

Info

Publication number
EP0203751A2
EP0203751A2 EP86303596A EP86303596A EP0203751A2 EP 0203751 A2 EP0203751 A2 EP 0203751A2 EP 86303596 A EP86303596 A EP 86303596A EP 86303596 A EP86303596 A EP 86303596A EP 0203751 A2 EP0203751 A2 EP 0203751A2
Authority
EP
European Patent Office
Prior art keywords
coupler
electric coupler
head
screen
cable
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Withdrawn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
EP86303596A
Other languages
German (de)
English (en)
Inventor
William Cuthbertson
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.)
Balfour Beatty PLC
Original Assignee
BICC PLC
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 BICC PLC filed Critical BICC PLC
Publication of EP0203751A2 publication Critical patent/EP0203751A2/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Withdrawn legal-status Critical Current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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • 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
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/527—Flameproof cases
    • 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
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H01R4/72—Insulation of connections using a heat shrinking insulating sleeve

Definitions

  • This invention relates to an electric coupler, especially, though not exclusively, an electric oupler for use in mines and quarries.
  • an electric coupler comprises a metal housing; a plastics head at one end of the housing within which electric contacts are secured; an opening at the other end of the housing through which the insulated conductors of an electric cable pass, the conductors being attached to the contacts; and a gland for clamping the wire armouring of the cable to the outer surface of the housing; the voids within the coupler being filled with a resin or compound passed through an aperture in the housing after the coupler has been assembled, and which hardens to form a weatherproof coupler.
  • an electric coupler is mounted on an end of an armoured electric cable having a plurality of individually screened conductors, and comprises a metal head which forms the front face of the coupler; at least two tubes of electrically insulating material secured in the head; an electric contact positioned within each tube and electrically connected to a respective conductor of the cable from an end part of which the screen has been cut back; clamping means electrically and mechanically connected to the head, clamping the wire armouring of the cable; a foramenous metallic earth screen surrounding the tubes and the said end part of each conductor; and hard resinous insulating compound which fills the voids within the screen, embeds the screen and forms the outer circumferential surface of the coupler.
  • the insulating compound is preferably based on an epoxy resin, a polyurethane or an acrylic casting resin.
  • the conductorts are crimped to the contacts.
  • An insulating sleeve preferably surrounds each crimped joint.
  • the sleeve is of heat shrinkable plastics.
  • the sleeve may be formed from a wound tape of insulating material:
  • portions of the head can be designed to extend between the contacts, thereby screening the contacts from one another.
  • the metal head is preferably in one piece.
  • the head may be in two parts, a front part forming a face for the coupler, and a rear part forming screening fins between the contacts.
  • the wire armour clamping means is mounted on to at least one metal support pillar attached to the metal head.
  • the clamping means has a fastening screw or screws by which each conductor screen can be mechnically and electrically connected to the clamping means.
  • the support pillars are screw threaded to the head.
  • a threaded portion of at least one support pillar extends through an aperture in the rear part and is screw threaded to the front part thereby securing the parts together.
  • wire armour clamping means may be mounted on metallic screening fins which extend from the metal head to form interphase barriers both between the contacts and between the conductors.
  • wire armour clamping means may comprise at least two metal rings through the centres of which the conductors pass and which are drawn together to grip the wires.
  • two separate metal rings may be secured by nuts which are screwed onto threaded spigots or studs which extend from the screening fins, or one ring may be formed integrally with the screening fins and at least one separate ring fastened to it by screws.
  • the contact insulating tubes are preferably bonded to the metal head by a suitable adhesive.
  • the tubes may be held in position by clamping a portion of each tube between the two parts of the head.
  • the tubes are preferably of a thermoset polyester dough moulded material.
  • the foramenous metallic earth screen is connected by clamping rings to the head and the wire armouring clamping means.
  • the screen may be a preformed metal (e.g. brass) mesh or (provided provision is made for filling with resin) a thin metal (e.g. copper) sheet.
  • the mould is in two-parts and formed from cast iron, tool steel, stainless steel or aluminium alloy - (depending on the expected usage and storage conditions available).
  • the internal surfaces of the mould are treated with a permanent release coating (e.g. of PTFE) but, as an alternative, it is possible to coat the intemal surfaces of the mould with any suitable greasy compound which is not miscible with the liquid resin, e. g. silicone grease, each time the mould is used.
  • the wire armouring clamping means can be used for cables having any diameter within a predetermined relatively wide range.
  • the drawing shows a single-part metal head - (2) for the coupler having three tubes (3) secured within it.
  • the tubes (3) are of a thermoset dough- moulded polyester insulating material and are secured in the head by an epoxy adhesive.
  • Each tube (3) forms an insulator for a contact - (4) on the end of a respective screened conductor - (5) of a three core wire armoured cable (6).
  • the contact (4) is made of copper and is crimped on to its exposed conductor (5) and held within the corresponding tube (3) by a brass contact securing ring (7) screwed on to the contact.
  • An insulating. sleeve (8) formed from a heat.shrinkable plastics material, surrounds each crimped joint to keep the interstices of the stranded conductor free from the insulating compound in which the metal parts will in due course be embedded.
  • the cable armouring (9) is connected to a clamp (10) which is mounted on metal support pillars (11) which are screwed into and extend from the metal head (2).
  • the clamp (10) comprises three metal rings (12) through which the cable conductors pass, the rings being fastened together by nuts (13) which are screwed on to the support pillars (11), with the armouring clamped between the rings.
  • the cable (6) comprises three screened conductors (5)
  • the conductor screenes (14) are mechanically and electrically connected to the clamp (10) by a fastening screw (15).
  • a brass screening mesh (16) is positioned around the contacts and conductors to form an outer screen, the mesh being mechanically and electrically connected by clamping rings (17, 18) to the head (2) and the clamp (10).

Landscapes

  • Insulators (AREA)
  • Cable Accessories (AREA)
  • Insulating Bodies (AREA)
EP86303596A 1985-05-14 1986-05-12 Raccord électrique Withdrawn EP0203751A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8512134 1985-05-14
GB858512134A GB8512134D0 (en) 1985-05-14 1985-05-14 Electric coupler

Publications (1)

Publication Number Publication Date
EP0203751A2 true EP0203751A2 (fr) 1986-12-03

Family

ID=10579085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86303596A Withdrawn EP0203751A2 (fr) 1985-05-14 1986-05-12 Raccord électrique

Country Status (4)

Country Link
EP (1) EP0203751A2 (fr)
CN (1) CN86102338A (fr)
GB (2) GB8512134D0 (fr)
ZA (1) ZA863172B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118313A (en) * 1988-07-08 1992-06-02 Raychem Sa Electrical terminal
EP1333539A1 (fr) * 2002-02-05 2003-08-06 Parker-Lucifer S.A. Partie electrique pour electrovanne
NL1022119C2 (nl) * 2002-12-09 2004-06-11 Eaton Electric Nv Aansluitpensamenstel en werkwijze voor het vervaardigen daarvan.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB613327A (en) * 1946-06-19 1948-11-25 Donald Jackson Improvements in or relating to electric connectors
GB830675A (en) * 1957-07-15 1960-03-16 British Insulated Callenders Improvements in or relating to electric cable couplers
DE7005047U (de) * 1970-02-13 1970-05-21 Kabel Metallwerke Ghh Endenabschluss fuer gekuehlte starkstromkabel.
DE7413987U (de) * 1974-04-23 1974-11-28 Kabel Und Metallwerke Gutehoffnungshuette Ag Steckdose für eine elektrische Anschlußleitung
DE2744949C3 (de) * 1977-10-06 1981-07-23 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Steckverbinder für Zündanlagen von Kraftfahrzeugen
GB2078020B (en) * 1980-06-13 1984-08-08 Bicc Ltd An electric connector method of manufacture
GB8325115D0 (en) * 1983-09-20 1983-10-19 Bicc Plc Electric coupler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5118313A (en) * 1988-07-08 1992-06-02 Raychem Sa Electrical terminal
EP1333539A1 (fr) * 2002-02-05 2003-08-06 Parker-Lucifer S.A. Partie electrique pour electrovanne
NL1022119C2 (nl) * 2002-12-09 2004-06-11 Eaton Electric Nv Aansluitpensamenstel en werkwijze voor het vervaardigen daarvan.

Also Published As

Publication number Publication date
ZA863172B (en) 1986-12-30
GB8512134D0 (en) 1985-06-19
GB2175153A (en) 1986-11-19
GB8611561D0 (en) 1986-06-18
CN86102338A (zh) 1986-11-12

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Withdrawal date: 19870708

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Inventor name: CUTHBERTSON, WILLIAM