WO2005045999A1 - Raccord de cable - Google Patents

Raccord de cable Download PDF

Info

Publication number
WO2005045999A1
WO2005045999A1 PCT/GB2004/004302 GB2004004302W WO2005045999A1 WO 2005045999 A1 WO2005045999 A1 WO 2005045999A1 GB 2004004302 W GB2004004302 W GB 2004004302W WO 2005045999 A1 WO2005045999 A1 WO 2005045999A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
connector
conductor
cable connector
helix
Prior art date
Application number
PCT/GB2004/004302
Other languages
English (en)
Inventor
Vagner Fuzetti
Original Assignee
Tyco Electronics Brazil Ltda
Tyco Electronics Uk Ltd
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 Tyco Electronics Brazil Ltda, Tyco Electronics Uk Ltd filed Critical Tyco Electronics Brazil Ltda
Priority to BRPI0415690-0A priority Critical patent/BRPI0415690A/pt
Publication of WO2005045999A1 publication Critical patent/WO2005045999A1/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
    • 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
    • H01R4/22—End caps, i.e. of insulating or conductive material for covering or maintaining connections between wires entering the cap from the same end
    • 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
    • H01R4/14—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 wrapping

Definitions

  • This invention relates to a cable connector, and in particular to a connector for electrical power cables, especially cables whose conductor cross-sectional area is relatively large, for example greater than 10 mm 2 , for use in the generation, transmission or distribution of electric power.
  • Connections to electrical cables may be provided by a bolt-on connector, or by a crimped connector. Whilst these are successfully used, a tool, such as a screwdriver or a crimping tool is required.
  • an electric cable connector comprising a metal tape that is wound so as to form a radially-resilient helix.
  • tape is meant an elongate strip whose width is at least twice its thickness, preferably at least three to five times its thickness, and especially ten or more times its thickness, provided that its thickness is sufficient, as will be readily apparent to suitably experienced persons, to render the tape adequately stiff and resilient for the present purpose.
  • the turns of the helix are arranged to be movable relative to one another and are not fastened together at their edges or overlapping parts.
  • the connector of the invention can be applied to the exposed conductor of an electric cable without using any special tools, whereby the operator using just the hands can twist and screw the helical connector onto the cable. Furthermore, the action of twisting the helical metal tape onto the conductor automatically brashes and cleans the conductor, for example removing any oxide film that may have been formed on the surface thereof. It will be appreciated that, in contrast with the screw-on and crimped connectors, this can conveniently result in a good electrical connection without the need for a separate cleaning of the cable conductor.
  • the connector may be mounted at the end of a cable, to provide a termination thereof, or may be attached part-way along a centre-stripped insulated cable, for example to form a branch- off.
  • the resilient nature of the metal tape ensures that a tight fit, and thus a good electrical connection, is made onto the cable conductor.
  • the connector of the present invention finds particular advantage when used with a stranded conductor, since it forces the strands into good contact with each other thus equalising the distribution of current flowing there-through.
  • the helical construction of the connector also makes it inherently useful for conductors of different diameter, thus reducing the number of connectors that need to be kept in inventory. Close conformity with the conductor can thus be obtained for a variety of diameters.
  • the helix is tapered, and may be stepped or of continuous tapering along at least part of the length of the connector. It will be appreciated that the tapering will assist in the mounting of the connector onto the conductor of the cable, and of the cleaning of the conductor surface. Furthermore, this configuration assists in the range-taking ability of the resilient helical structure.
  • the cleaning of the surface of the conductor when the connector is fitted thereon is improved if the internal surface of the tape is roughened, for example being formed to have a mesh or knurled configuration.
  • the invention also provides an electrical cable having such a connector mounted thereon, making secure electrical connection with the conductor thereof, for example of copper or aluminium, which may be stranded.
  • Figure 1 is a side view of an electric cable connector
  • Figure 2 is an end view of the connector showing its inner surface
  • Figure 3 is a view of the connector of Figures 1 and 2 mounted so as to terminate the stranded conductor of an electrical cable.
  • an electric cable connector 10 is formed from a copper tape of width 4.7 mm and thickness 0.7 mm that is formed into a helix of minimum inner diameter 6.25 millimetres to a maximum inner diameter of 9.0 millimetres, and of overall length 26.7 millimetres.
  • the turns of the connector 10 substantially abut one another, and over a length of 24mm along a first portion 12 are of substantially constant diameter, before providing a turn 14 of intermediate diameter, and a final turn 16 at the other end of the connector 10 of larger diameter.
  • the inner surface 18 of the connector 10 is contoured so as to provide a mesh-like configuration along its entire length.
  • Figure 3 shows the connector 10 having been screwed onto the exposed stranded conductors 20 of a cable 22.
  • the outer diameter of the bundle of stranded conductor 20 is greater than the largest inner diameter of the connector 10, and that the connector 10 has been screwed over the free end of the conductors 20, with its largest turn 16 leading.
  • the resilience of the helical connector 10 is such that by screwing the connector 10, turn 16 foremost, forcing it to expand over the end of the bundle of conductors 20, the roughened inner surface 18 of the connector 10 abrades the outer surfaces of the strands 20, thus removing any oxide film thereon and ensuring good electrical contact between the connector 10 and the conductors 20 of the cable 22.
  • the connector of the present invention is suitable for cables up to 16mm and current capacity of less than 100 amps, which may contain solid conductors, and also on larger cables, which may be formed from stranded conductors, up to 25mm 2 , and even 35mm 2 , carrying current up to 140 amps, for example.
  • the connector finds particular application, for example, in terminating aluminium or copper 9 9 conductors from 2.5mm to 35mm for use with an electrical distribution busbar rated at 140 amps, or conductors from 2.5mm 2 to 50mm 2 for 200 amp rated busbars.
  • busbars may contain ten positions for electrical contact, providing for connection from a single supply cable to nine taps. Alternatively, if the ten positions are arranged in two groupings of five, then four taps are available for each of two points of supply.

Landscapes

  • Insulated Conductors (AREA)
  • Cable Accessories (AREA)
  • Multi-Conductor Connections (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

L'invention concerne un raccord de câble électrique (10), sous forme d'une bande métallique formée en une hélice souple au niveau radial et possédant de préférence une surface intérieure rugueuse (18). Ce raccord peut être vissé sur les conducteurs toronnés (20) d'un câble (22) au niveau d'une extrémité de ce dernier, ce qui tend à éliminer tout film d'oxyde situé sur les conducteurs. La pression vers l'intérieur du raccord (10) permet d'augmenter l'égalisation de courant entre les fils conducteurs du câble.
PCT/GB2004/004302 2003-10-22 2004-10-08 Raccord de cable WO2005045999A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BRPI0415690-0A BRPI0415690A (pt) 2003-10-22 2004-10-08 conector de cabo

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0324666.7A GB0324666D0 (en) 2003-10-22 2003-10-22 Cable connector
GB0324666.7 2003-10-22

Publications (1)

Publication Number Publication Date
WO2005045999A1 true WO2005045999A1 (fr) 2005-05-19

Family

ID=29595626

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/004302 WO2005045999A1 (fr) 2003-10-22 2004-10-08 Raccord de cable

Country Status (7)

Country Link
CN (1) CN1890841A (fr)
AR (1) AR049150A1 (fr)
BR (1) BRPI0415690A (fr)
GB (1) GB0324666D0 (fr)
PE (1) PE20050851A1 (fr)
RU (1) RU2006117204A (fr)
WO (1) WO2005045999A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191103794A (en) * 1911-02-15 1911-12-14 Walker Horrocks & Company Ltd Improved Electrical Connector.
US2656204A (en) * 1950-11-10 1953-10-20 Frederick W Nyquist Wire nut
US3008119A (en) * 1955-12-28 1961-11-07 Amp Inc Crimped connection for electrical wire
US3010745A (en) * 1956-02-08 1961-11-28 John H Blomstrand Frictionally driven wire connector
US3688245A (en) * 1971-03-01 1972-08-29 John E Lockshaw Solderless lug connector
WO1993017467A1 (fr) * 1992-02-20 1993-09-02 Raychem S.A. Connecteur electrique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191103794A (en) * 1911-02-15 1911-12-14 Walker Horrocks & Company Ltd Improved Electrical Connector.
US2656204A (en) * 1950-11-10 1953-10-20 Frederick W Nyquist Wire nut
US3008119A (en) * 1955-12-28 1961-11-07 Amp Inc Crimped connection for electrical wire
US3010745A (en) * 1956-02-08 1961-11-28 John H Blomstrand Frictionally driven wire connector
US3688245A (en) * 1971-03-01 1972-08-29 John E Lockshaw Solderless lug connector
WO1993017467A1 (fr) * 1992-02-20 1993-09-02 Raychem S.A. Connecteur electrique

Also Published As

Publication number Publication date
RU2006117204A (ru) 2007-12-20
CN1890841A (zh) 2007-01-03
BRPI0415690A (pt) 2006-12-26
AR049150A1 (es) 2006-07-05
GB0324666D0 (en) 2003-11-26
PE20050851A1 (es) 2005-11-29

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