EP3121903B1 - Anordnung mit einem verbinder für mindestens ein elektrisches kabel - Google Patents

Anordnung mit einem verbinder für mindestens ein elektrisches kabel Download PDF

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Publication number
EP3121903B1
EP3121903B1 EP15306210.4A EP15306210A EP3121903B1 EP 3121903 B1 EP3121903 B1 EP 3121903B1 EP 15306210 A EP15306210 A EP 15306210A EP 3121903 B1 EP3121903 B1 EP 3121903B1
Authority
EP
European Patent Office
Prior art keywords
conductor
clamping
clamping screws
electrical
connector
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.)
Active
Application number
EP15306210.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3121903A1 (de
Inventor
Gert Stauch
Peter Grötsch
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.)
Nexans SA
Original Assignee
Nexans SA
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 Nexans SA filed Critical Nexans SA
Priority to EP15306210.4A priority Critical patent/EP3121903B1/de
Priority to CN201680043500.0A priority patent/CN107851908A/zh
Priority to PCT/EP2016/066062 priority patent/WO2017016836A1/en
Priority to AU2016299188A priority patent/AU2016299188A1/en
Priority to CA2993124A priority patent/CA2993124A1/en
Publication of EP3121903A1 publication Critical patent/EP3121903A1/de
Application granted granted Critical
Publication of EP3121903B1 publication Critical patent/EP3121903B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw

Definitions

  • the invention relates to an arrangement with a connector for at least one electrical cable which, according to claim 1, has an electrical conductor surrounded by a sheath.
  • the words "high number of individual wires” means in the context of the invention that the conductor has at least 100 individual conductors stranded or twisted with one another.
  • An arrangement described at the beginning has been known in various designs for years and is available on the market.
  • the connectors used can be designed as tubes for connecting two electrical cables through. To connect only one electrical cable, they can also be closed on one end face and have an outwardly protruding contact element there.
  • the known arrangements differ essentially in the structure and the arrangement of the clamping screws, which in most cases are designed as shear screws.
  • the contact pressure with which a clamping screw presses against an electrical conductor in the assembled state should be as large as possible and be maintained over the long term so that a stable electrical connection between the electrical conductors of cables, especially power cables, can be guaranteed over the entire required service life.
  • a clamping screw which can be screwed into a threaded hole of a metal body.
  • the metal body has a receiving space for receiving a multi-wire electrical conductor.
  • the conductor can be clamped in the assembly position using the clamping screw.
  • the tip of the clamping screw is conical, at an angle of about 30 °.
  • the cone is rounded slightly blunt at its end with a small radius.
  • Two holes are made on the side of the metal body, into which the individual wires of the conductor pushed apart by the clamping screw can escape.
  • the connector has a metallic clamping body designed as a tubular piece, which has at least two threaded through holes in its wall for receiving clamping screws.
  • a ball is attached in one on the end face of the clamping screw, which is intended to rest on the respective electrical conductor. It is arranged in the recess, separated from its wall by a gap that secures its mobility, so that it can be rotated in all directions and in the working position protrudes beyond the end face of the clamping screw.
  • This special clamping screw prevents damage to the surface of the conductor.
  • the invention is based on the object of designing the arrangement described above in such a way that even flexible electrical conductors with a large number of individual wires can be safely and completely contacted.
  • the two clamping screws which are arranged in the two through holes of the connector, the axes of which are V-shaped to one another, act on the same side of a conductor located in the clamping body on the same area of the same. When they are rotated with sufficient force, they penetrate the conductor, pressing the individual wires compactly together and also against the wall of the clamping body on the side opposite the through holes. It is sufficient for the required electrical contact of all individual wires of the conductor if the two mentioned clamping screws are screwed sufficiently tightly into the clamping body. No additional clamping screws are required on the side of the clamping body opposite these two clamping screws. In addition, the individual wires of the conductor are only pressed together by the two clamping screws without being damaged or even destroyed. This is ensured by the rounding of the tip of the clamping screws, which are advantageously rounded with a radius of 0.28 x D, where D is the diameter of the threaded part of the clamping screws.
  • the arrangement is used with particular advantage for flexible electrical conductors whose individual conductors consist of aluminum or an aluminum alloy.
  • a conductor has, for example, about 1400 individual wires with a cross section of 400 mm 2 . Due to the terminal screws rounded at their tips, this large number of individual wires is only sufficiently compressed for an effective electrical connection.
  • a thin oxide layer surrounding the wires made of aluminum or an aluminum alloy is broken open by the clamping screws with plastic deformation, so that the electrically effective passage of the conductor results in its entire cross section.
  • the oxide layers of the individual wires can have a maximum thickness of 10 nm.
  • Figs. 1 and 2 show only very generally two different connectors for two electrical cables on the one hand and for one electrical cable on the other.
  • Fig. 1 schematically shows a connector for two electrical cables 1 and 2, which can be power cables. It has a clamping body 3, which consists for example of a tin-plated aluminum alloy and is designed as a tube.
  • the clamping body 3 has two threaded bores, in each of which a clamping screw 4 provided with an external thread is arranged.
  • the electrical conductors 5 and 6 of the two electrical cables 1 and 2 protrude into the clamping body 3 from two different sides.
  • the conductors 5 and 6 are fixed in the assembly position by the clamping screws 4 in the clamping body 3 and are thereby connected to one another in an electrically conductive manner.
  • they are designed as multi-wire conductors and consist, for example, of aluminum or copper.
  • the same has instead of the tube 3 a tubular clamping body 7 which is closed at one end face.
  • An electrical contact element 8 protrudes from this end face and is used for connection to an electrical device. Accordingly, only the conductor 6 of the cable 2 is inserted into the clamping body 7 and is fixed by the clamping screw 4.
  • the clamping body 3 is shown in section. However, it could also be the clamping body 7.
  • the electrical conductor 6 is arranged in the clamping body 3 and is fixed by the two clamping screws 4.
  • the conductor 6 advantageously consists of a large number of individual wires made of aluminum or an aluminum alloy, which are stranded with one another or, in general, forfeited.
  • the individual wires could, for example, also consist of copper or another material with good electrical conductivity. It's supposed to be a high number be at least 300 individual wires.
  • the conductor 6 has approximately 1400 individual wires and an electrically effective cross section of approximately 400 mm 2 . This embodiment of the conductor 6 basically also applies to the conductor 5.
  • the two clamping screws 4 provided with an external thread are screwed into through holes 9 and 10 of the clamping body 3, which are equipped with a thread.
  • the axes A1 and A2 of the two through holes 9 and 10 run in a V-shape to one another at an angle ⁇ which can be between 100 ° and 180 °.
  • the angle ⁇ is advantageously 120 °.
  • the two clamping screws 4 are shown in the drawings as shear screws. You have according to Fig. 6 a rounded tip 11, with which they rest on the conductor 6 in the assembly position.
  • the tip 11 of the clamping screws 4 has a flat side running transversely to the axial direction on its end face and it is rounded all around with a radius R in the transition area from the flat side to the threaded part, which can be between 0.15 x D and 0.5 x D.
  • D is the diameter of the threaded part of the clamping screws 4.
  • the radius R with which the tip 11 of the clamping screws 4 is rounded is advantageously 0.28 x D.
  • the clamping screws 4 are rotated about their axis. In doing so, they penetrate the conductor 6 and press the individual wires of the same together, namely because of their inclined course relative to one another in the same area of the conductor 6. The individual wires are only compressed and not damaged because of the rounded tips 11 of the clamping screws 4. Only the oxide layers that surround the individual wires are broken open.
  • the final position of the clamping screws 4 goes from the Figures 4 and 5 out, according to Fig. 5 the upper part of the clamping screws 4 has sheared off.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
EP15306210.4A 2015-07-24 2015-07-24 Anordnung mit einem verbinder für mindestens ein elektrisches kabel Active EP3121903B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP15306210.4A EP3121903B1 (de) 2015-07-24 2015-07-24 Anordnung mit einem verbinder für mindestens ein elektrisches kabel
CN201680043500.0A CN107851908A (zh) 2015-07-24 2016-07-07 用于至少一根电缆的具有连接器的结构
PCT/EP2016/066062 WO2017016836A1 (en) 2015-07-24 2016-07-07 Arrangement with a connector for at least one electrical cable
AU2016299188A AU2016299188A1 (en) 2015-07-24 2016-07-07 Arrangement with a connector for at least one electrical cable
CA2993124A CA2993124A1 (en) 2015-07-24 2016-07-07 Arrangement with a connector for at least one electrical cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15306210.4A EP3121903B1 (de) 2015-07-24 2015-07-24 Anordnung mit einem verbinder für mindestens ein elektrisches kabel

Publications (2)

Publication Number Publication Date
EP3121903A1 EP3121903A1 (de) 2017-01-25
EP3121903B1 true EP3121903B1 (de) 2020-10-21

Family

ID=53724167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15306210.4A Active EP3121903B1 (de) 2015-07-24 2015-07-24 Anordnung mit einem verbinder für mindestens ein elektrisches kabel

Country Status (5)

Country Link
EP (1) EP3121903B1 (zh)
CN (1) CN107851908A (zh)
AU (1) AU2016299188A1 (zh)
CA (1) CA2993124A1 (zh)
WO (1) WO2017016836A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2758404R1 (es) * 2017-10-03 2020-09-25 Carbine Ventures Inc D/B/A Cable Tech Laboratories Mejora de la conectividad entre elementos conductores
DE102018130746A1 (de) * 2018-12-03 2020-06-04 Pfeifer Holding Gmbh & Co. Kg Stromleiterbrücke und Verfahren zum Ausbilden einer Stromleiterbrücke

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146290A (en) * 1976-06-09 1979-03-27 Aluminum Company Of America Electrical connector
DE3245136A1 (de) * 1982-12-07 1984-06-07 Gustav 7407 Rottenburg Flier Klemmvorrichtung zum verbinden von draehten und dergl.
US6338658B1 (en) * 2000-02-14 2002-01-15 Ilsco Corporation Slotted electrical connector
US6948955B2 (en) * 2001-04-26 2005-09-27 3M Innovative Properties Company Terminal of a medium voltage electrical cable
ES2290102T3 (es) * 2001-04-26 2008-02-16 3M Innovative Properties Company Terminal de un cable electrico de media tension.
US9172167B2 (en) * 2004-11-20 2015-10-27 Al Cop Llc Junction failure inhibiting connector
EP2148392A1 (de) 2008-07-25 2010-01-27 Nexans Klemmschraube
US8425265B2 (en) * 2011-02-08 2013-04-23 Nexans Arrangement with a clamp of metal constructed as a pipe piece

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CA2993124A1 (en) 2017-02-02
WO2017016836A1 (en) 2017-02-02
AU2016299188A1 (en) 2018-02-08
CN107851908A (zh) 2018-03-27
EP3121903A1 (de) 2017-01-25

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