EP2172946B1 - Câble électrique destiné à la connexion d'appareils électriques mobiles - Google Patents

Câble électrique destiné à la connexion d'appareils électriques mobiles Download PDF

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Publication number
EP2172946B1
EP2172946B1 EP09305571A EP09305571A EP2172946B1 EP 2172946 B1 EP2172946 B1 EP 2172946B1 EP 09305571 A EP09305571 A EP 09305571A EP 09305571 A EP09305571 A EP 09305571A EP 2172946 B1 EP2172946 B1 EP 2172946B1
Authority
EP
European Patent Office
Prior art keywords
layer
wires
line
stranded
electrical
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.)
Not-in-force
Application number
EP09305571A
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German (de)
English (en)
Other versions
EP2172946A1 (fr
Inventor
Ferdinand Grögl
Thomas Mann
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
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Publication date
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Application filed by Nexans SA filed Critical Nexans SA
Priority to EP09305571A priority Critical patent/EP2172946B1/fr
Publication of EP2172946A1 publication Critical patent/EP2172946A1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/041—Flexible cables, conductors, or cords, e.g. trailing cables attached to mobile objects, e.g. portable tools, elevators, mining equipment, hoisting cables

Definitions

  • the invention relates to an electrical line for connecting portable electrical loads to a supply source according to the preamble of patent claim 1.
  • Such lines are used for example in drag chains and for connecting mobile devices, in particular robots, with a voltage or signal source.
  • the cables must be mechanically strong, with a constant flexural strength for a long time. They should remain well bendable in a wide temperature range, for example, between -40 ° C and +80 ° C.
  • Of particular importance for such lines are in addition to resistance to temperature and torsion their electrical properties. This particularly applies to the existing conductors for the transmission of data with operating frequencies of over 100 MHz.
  • the well-known line after the DE 101 62 739 A1 has, in addition to other transmission elements, two data transmission lines and a power line serving the power supply, which are each surrounded by an electric screen.
  • the data transmission lines each consist of a wire pair with two insulated electrical conductors and the power line has four wires of insulated electrical conductors.
  • This known line has proven itself in practice. Their preparation is complicated.
  • EP-A-1 589 541 is an electrical line for connecting portable electrical loads to a supply source described having a surrounded by a sheath of insulating core soul, in which both the transmission of data and the power supply, consisting of insulated electrical conductors wires are arranged.
  • the line core of this known line is surrounded by a two-layer having electrical screen, one of which is designed as a braid or Umseilung of copper wires, while the other has at least one layer made of an electrically conductive, made of plastic nonwoven material.
  • a wire pair is mounted in the cable core, which is surrounded by a shield. In the opposing gussets between the wires of the pair of wires each one of the power supply serving supply wire is arranged outside the shield.
  • the invention has for its object to provide a line of the type described, the more compact and easier to manufacture and is suitable for the transmission of data with operating frequencies of over 100 MHz.
  • This line is easy to produce in conventional technology. It consists in the line core of four to a star quad stranded wires for data transmission and at least two wires for power supply, which are stranded together in a preferred embodiment.
  • the star quad is a symmetrical formation of two pairs of veins, all of the same length. Time differences for the data on the two pairs can be excluded and crosstalk between the two transmission circuits is minimized by the good electrical decoupling of the two pairs given by the symmetry of the star quad.
  • the dimensions of the star quad are also kept small because it does not have its own external electrical screen, also called element screen. This also applies to the power supply Veins.
  • the star quad and the wires serving the power supply can also be easily stranded together because of the missing element screens.
  • the layer of insulating material preferably a polypropylene nonwoven material, ensures a sufficiently low capacitance between the shield and the line core.
  • the braid or umseilung of copper wires as a layer of the screen causes an optimized line attenuation.
  • the electrical shielding against high-frequency electromagnetic fields as a further layer of the shield over a wide frequency range, the metallized nonwoven material sure, which forms a completely closed layer of electrically conductive material.
  • the metal present in the nonwoven material which is preferably copper, is deposited from the vapor phase. It not only settles on the outer surface of the nonwoven material, but also penetrates into it and envelops its inner fibers, which are known to be held together disorderly in the nonwoven material.
  • the nonwoven material is then "penetrating" coated. As a result, it has a porous, but almost complete, metal layer, which results in> 85% coverage of the enclosed conductive core with electrically active, metallic material.
  • a corrosion or oxidation protection layer for example nickel or silver can be deposited in addition to the copper.
  • a preferred embodiment of the line in which two wires serving the power supply are stranded together to form a pair of wires.
  • the line should have at least two wires serving the power supply, which are stranded with a star quad which is also present in the line core.
  • the line - also representative of the other possible embodiments - for the preferred embodiment will be described.
  • the line after Fig. 1 consists of a wire pair A serving for the power supply and a star quad S serving for data transmission.
  • wire pair A two cores 1 consisting of an insulated electrical conductor are stranded together.
  • the stranding length of the wire pair A is advantageously in the range of 8 ⁇ D1 to 14 ⁇ D1 with the diameter D 1 of the wire pair in mm.
  • the star quad S has four stranded wires 2, each consisting of an insulated conductor.
  • the stranding length of the star quad S is advantageously in the range between 5 x D2 and 8 x D2 with the diameter D2 of the star quad in mm.
  • Core pair A and star quad S are stranded together.
  • the filling elements 3 and 4 are preferably made of polypropylene fibers or polytetrafluoroethylene (PTFE) of low density.
  • the stranding of wire pair A and star quad S to the core line is preferably carried out in the counterstroke to the stranding of the wires 1 of the wire pair A on the one hand and the wires 2 of the star quad S on the other.
  • the stranding length is advantageously in the range of 6 x D3 to 14 x D3 with the diameter D3 of the cable core in mm.
  • a layer 5 of insulating material is attached, which is surrounded by an electric screen.
  • the screen has a voltage applied to the layer 5 first layer 6, which is preferably designed as a braid or Umseilung of copper wires.
  • a second layer 7 of the same is arranged, which consists of electrically conductive nonwoven material.
  • An outer jacket 8 of insulating material surrounds the second layer 7 of the screen.
  • the conductors of the wires 2 of the star quad S are preferably embodied as stranded conductors consisting of seven copper wires with a cross section of, for example, 0.25 mm 2 .
  • six thinner copper wires can additionally be arranged in the outer wraps of the wires. This possibly leads to a further reduction of the line attenuation.
  • the wires of the stranded conductor can also be made of a copper alloy, such as a copper-tin alloy.
  • the insulation of the conductor consists of dimensionally accurate to be extruded massive material, in particular Polyethylene (PE), polypropylene (PP) or a fluoropolymer (FEP, PTFE, PFA), if the line is to be used in areas with high temperatures.
  • PE Polyethylene
  • PP polypropylene
  • FEP fluoropolymer
  • PTFE PTFE
  • PFA fluoropolymer
  • the star quad S is produced in the conventional technique by stranding four wires 2, preferably with reverse rotation of the wires, so that a twist-free star quad results with precisely positioned cores.
  • the conductors of the wires 1 of the wire pair A provided for the power supply have, for example, a cross section of 0.38 mm 2 .
  • the diameter of the wires 1 can also be for example a maximum of 1.05 mm.
  • the layer 5 of insulating material is advantageously made of a PP nonwoven material, a foamed PP or a PTFE low density, if the line is to be used at high temperatures.
  • a ribbon of such material may preferably be wrapped around the liner with overlap.
  • the layer 5 can also be designed as a so-called inner jacket, which also fills the interstices between the star quad S and the wire pair A. The separate filling elements 3 and 4 are then omitted.
  • the copper wires of the braid or Umseilung can be tinned.
  • silver-plated or nickel-plated copper wires can also be used.
  • the nonwoven material of the second layer 7 of the screen is in a preferred embodiment, a polyester. It can, in particular at higher operating temperatures, but also consist of other suitable plastics, such as aramid or glass fibers. Its wall thickness or thickness is preferably between 80 .mu.m and 300 .mu.m. For its metallization, at least one electrically highly conductive metal is used, in particular copper or silver. A copper layer produced in this way can be provided with an additional nickel layer. The deposition of the respective metal takes place by means of the plasma technique from the vapor phase on the nonwoven material.
  • the nonwoven material is preferably wrapped as a tape with overlap around the first ply 6 of the screen.
  • the jacket 8 consists for example of polyvinyl chloride, polyurethane, a thermoplastic elastomer, silicone or a fluoroelastomer.
  • the line after Fig. 1 is suitable, for example, for use in drag chains, in which it is subjected to bending stress.
  • Such a line is claimed not only to bending, but also to torsion.
  • the electric screen has an inner layer 9 made of two metal-laminated plastic films, which may have a metal layer on one or both sides.
  • the two films are advantageously wrapped around the layer 5 with gaps each.
  • the outer film preferably covers the gaps of the inner film.
  • the foils are each made, for example, of polyester, polyimide or PEEK with a one-sided or two-sided coating of copper or aluminum.
  • the first layer 6 is attached to the same, which is then carried out with advantage as Umseilung of tinned, silvered or nickel-plated copper wires.
  • the second layer 7 of the screen can in this embodiment of the line also consist of two strips of the above-explained metallized nonwoven material, which are wound with a gap on the first layer 6.
  • the outer band covers the gaps of the inner band.

Landscapes

  • Communication Cables (AREA)
  • Cable Accessories (AREA)
  • Processing Of Terminals (AREA)
  • Insulated Conductors (AREA)

Claims (4)

  1. Câble électrique destiné à brancherdes charges électriques mobiles à une source d'alimentation, lequel présente une âme de câble entourée d'une gaine en matériau isolant, dans lequel sont disposés des fils constitués de conducteurs électriques isolés et servant à la fois à la transmission de données et à l'alimentation électrique, et avec lequel l'âme de câble est entourée d'un blindage électrique qui présente deux couches dont l'une est réalisée sous la forme d'une tresse ou d'un guipage en fils de cuivre et l'autre se compose d'une étoffe en matière plastique rendue conductrice d'électricité, caractérisé en ce
    - que quatre fils (2) destinés à la transmission de données et toronnés en une quarte enétoile (S) sont disposés dans l'âme de câble,
    - qu'au moins deux fils (1) servant à l'alimentation électrique sont en plus appliqués dans l'âme de câble,
    - que la quarte en étoile (S) et les fils (1) servant à l'alimentation électrique sont des éléments de toronnés ensemble pour former l'âme de câble,
    - qu'une couche (5) de matériau isolant est appliquée sur l'âme de câble, sur laquelle est disposé, dans une première couche (6), une tresse ou un guipage en fils de cuivre en tant que partie du blindage électrique,
    - que l'étoffe en matière plastique rendue conductrice d'électricité est appliquée en au moins une couche sur la première couche (6) en tant que deuxième couche (7) du blindage électrique et
    - quel l'étoffe est entourée de la gaine (8) en matériau isolant.
  2. Câble selon la revendication 1, caractérisé en ce
    - que sont prévus deux fils (1) servant à l'alimentation électrique, lesquels sont toronnés ensemble en une paire de fils (A) et
    - que la quarte en étoile (S) et la paire de fils (A) sont toronnées ensemble.
  3. Câble selon la revendication 1 ou 2, caractérisé en ce que la couche (5) en matériau isolant se compose d'un matériau à base de polypropylène ou d'un polytétrafluoréthylène de faible densité.
  4. Câble selon l'une des revendications 1 à 3, caractérisé en ce que deux films en matière plastique métallisés, lesquels présentent d'un côté ou des deux côtés une couche métallique, sont tout d'abord enroulés à chaque fois avec des interstices en tant que couche intérieure (9) du blindage sur la couche (5) en matériau isolant, le film extérieur recouvrant le interstices du film intérieur, sur lesquels est appliquée la première couche (6) du blindage, de préférence réalisée sous la forme d'un guipage.
EP09305571A 2008-09-12 2009-06-19 Câble électrique destiné à la connexion d'appareils électriques mobiles Not-in-force EP2172946B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09305571A EP2172946B1 (fr) 2008-09-12 2009-06-19 Câble électrique destiné à la connexion d'appareils électriques mobiles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08290856 2008-09-12
EP09305571A EP2172946B1 (fr) 2008-09-12 2009-06-19 Câble électrique destiné à la connexion d'appareils électriques mobiles

Publications (2)

Publication Number Publication Date
EP2172946A1 EP2172946A1 (fr) 2010-04-07
EP2172946B1 true EP2172946B1 (fr) 2011-01-05

Family

ID=40263394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09305571A Not-in-force EP2172946B1 (fr) 2008-09-12 2009-06-19 Câble électrique destiné à la connexion d'appareils électriques mobiles

Country Status (3)

Country Link
EP (1) EP2172946B1 (fr)
AT (1) ATE494617T1 (fr)
DE (1) DE502009000273D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3336856A1 (fr) 2016-12-16 2018-06-20 Nexans Conduite électrique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107993753A (zh) * 2017-12-29 2018-05-04 东莞金信诺电子有限公司 一种低损耗小外径高速线缆
DE102019108060A1 (de) * 2019-03-28 2020-10-01 Leoni Kabel Gmbh Kabel zur elektrischen Datenübertragung und Herstellungsverfahren für ein Kabel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10162739A1 (de) * 2001-12-20 2003-07-03 Nexans Flexible elektrische Leitung
ES2285302T3 (es) * 2004-04-19 2007-11-16 Nexans Cable electrico de energia y control, flexible.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3336856A1 (fr) 2016-12-16 2018-06-20 Nexans Conduite électrique
WO2018109214A1 (fr) 2016-12-16 2018-06-21 Nexans Ensemble comprenant une ligne électrique et une source de courant

Also Published As

Publication number Publication date
ATE494617T1 (de) 2011-01-15
EP2172946A1 (fr) 2010-04-07
DE502009000273D1 (de) 2011-02-17

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