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EP2172946B1 - Electric cable for connecting to mobile electrical devices - Google Patents

Electric cable for connecting to mobile electrical devices 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
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EP
European Patent Office
Prior art keywords
layer
wires
line
stranded
electrical
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EP09305571A
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German (de)
French (fr)
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EP2172946A1 (en
Inventor
Ferdinand Grögl
Thomas Mann
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Nexans SA
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Nexans SA
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/04Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/041Flexible 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.

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

Abstract

The cable has a wire (1) serving as a power supply, and an insulating material coating (5) applied over a cable core. A star circuit (S) and the wire are stranded with each other as a stranding element for forming the cable core. A web and/or a spiral of copper wire are arranged as a layer (6) of electrical shield over the insulating material coating. A layer (7) of electrically conductive non-woven material is applied over the layer of electrical shield, where the non-woven material is surrounded by an insulating material cladding (8).

Description

Die Erfindung bezieht sich auf eine elektrische Leitung zum Anschluß ortsveränderlicher elektrischer Verbraucher an eine Speisequelle gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to an electrical line for connecting portable electrical loads to a supply source according to the preamble of patent claim 1.

Eine solche Leitung geht aus der EP-A-1 589 541 hervor.Such a line goes out of the EP-A-1 589 541 out.

Derartige Leitungen werden beispielsweise in Schleppketten und zum Verbinden von ortsveränderlichen Geräten, insbesondere von Robotern, mit einer Spannungs- bzw. Signalquelle eingesetzt. Die Leitungen müssen mechanisch belastbar sein, mit einer auf lange Zeit gleichbleibenden Biegefestigkeit. Sie sollen auch in einem weiten Temperaturbereich gut biegbar bleiben, der beispielsweise zwischen -40 °C und +80 °C liegt. Von besonderer Bedeutung für solche Leitungen sind neben Beständigkeit gegen Temperatur und Torsion ihre elektrischen Eigenschaften. Das bezieht sich besonders auf die für die Übertragung von Daten vorhandenen Leiter mit Betriebsfrequenzen von über 100 MHz.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.

Die bekannte Leitung nach der DE 101 62 739 A1 weist neben anderen Übertragungselementen zwei Datenübertragungsleitungen und eine der Stromversorgung dienende Stromleitung auf, die jeweils von einem elektrischen Schirm umgeben sind. Die Datenübertragungsleitungen bestehen jeweils aus einem Aderpaar mit zwei isolierten elektrischen Leitern und die Stromleitung weist vier Adern aus isolierten elektrischen Leitern auf. Diese bekannte Leitung hat sich in der Praxis bewährt. Ihre Herstellung ist aber aufwendig.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.

In der eingangs erwähnten EP-A-1 589 541 ist eine elektrische Leitung zum Anschluß ortsveränderlicher elektrischer Verbraucher an eine Speisequelle beschrieben, welche eine von einem Mantel aus Isoliermaterial umgebene Leitungsseele aufweist, in der sowohl der Übertragung von Daten als auch der Stromversorgung dienende, aus isolierten elektrischen Leitern bestehende Adern angeordnet sind. Die Leitungsseele dieser bekannten Leitung ist von einem zwei Lagen aufweisenden elektrischen Schirm umgeben, von denen eine als Geflecht bzw. Umseilung aus Kupferdrähten ausgeführt ist, während die andere mindestens eine Schicht aus einem elektrisch leitfähig gemachten, aus Kunststoff bestehenden Vliesmaterial aufweist. Zur Datenübertragung ist in der Leitungsseele ein Aderpaar angebracht, das von einer Abschirmung umgeben ist. In den einander gegenüber liegenden Zwickeln zwischen den Adern des Aderpaars ist außerhalb der Abschirmung je eine der Stromversorgung dienende Versorgungsader angeordnet.In the aforementioned 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. For data transmission, 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.

Der Erfindung liegt die Aufgabe zugrunde, eine Leitung der eingangs geschilderten Art anzugeben, die kompakter und einfacher herzustellen sowie für die Übertragung von Daten mit Betriebsfrequenzen von über 100 MHz geeignet ist.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.

Diese Aufgabe wird gemäß den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöst.This object is achieved according to the characterizing features of claim 1.

Diese Leitung ist in herkömmlicher Technik einfach herstellbar. Sie besteht in der Leitungsseele aus vier zu einem Sternvierer miteinander verseilten Adern zur Datenübertragung und aus mindestens zwei Adern zur Stromversorgung, die in bevorzugter Ausführungsform miteinander verseilt sind. Der Sternvierer ist ein symmetrisches Gebilde aus zwei Paaren von Adern, die alle die gleiche Länge haben. Laufzeitunterschiede für die Daten auf den beiden Paaren können ausgeschlossen werden und ein Nebensprechen zwischen den beiden Übertragungskreisen ist durch die durch die Symmetrie des Sternvierers gegebene gute elektrische Entkopplung der beiden Paare minimiert. Die Abmessungen des Sternvierers sind außerdem klein gehalten, weil derselbe keinen eigenen äußeren elektrischen Schirm, auch Elementschirm genannt, hat. Das gilt auch für die der Stromversorgung dienenden Adern. Der Sternvierer und die der Stromversorgung dienenden Adern können wegen der fehlenden Elementschirme außerdem einfach miteinander verseilt werden. Die Schicht aus Isoliermaterial, vorzugsweise ein Vliesmaterial aus Polypropylen, stellt eine ausreichend niedrige Kapazität zwischen dem Schirm und der Leitungsseele sicher. Das Geflecht bzw. die Umseilung aus Kupferdrähten als eine Lage des Schirms bewirkt eine optimierte Leitungsdämpfung. Die elektrische Abschirmung gegen hochfrequente elektromagnetische Felder stellt als weitere Lage des Schirms über einen weiten Frequenzbereich das metallisierte Vliesmaterial sicher, welches eine rundum geschlossene Schicht aus elektrisch leitendem Material bildet. Das im Vliesmaterial vorhandene Metall, bei dem es sich vorzugsweise um Kupfer handelt, wird aus der Dampfphase abgeschieden. Es schlägt sich nicht nur auf der äußeren Oberfläche des Vliesmaterials nieder, sondern dringt auch in dasselbe ein und umhüllt dessen innere Fasern, die bekanntermaßen ungeordnet im Vliesmaterial zusammengehalten sind. Das Vliesmaterial ist danach "durchdringend" beschichtet. Es hat dadurch eine zwar poröse, aber trotzdem nahezu vollständige Metallschicht, die eine Bedeckung der umschlossenen Leitungsseele mit elektrisch wirksamem, metallischem Material von > 85 % ergibt. Zur Bildung einer Korrosions- bzw. Oxidationsschutzschicht können zusätzlich zum Kupfer beispielsweise Nickel oder Silber abgeschieden werden.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. To form a corrosion or oxidation protection layer, for example nickel or silver can be deposited in addition to the copper.

Ausführungsbeispiele des Erfindungsgegenstandes sind in den Zeichnungen dargestellt.Embodiments of the subject invention are illustrated in the drawings.

Es zeigen:

  • Fig. 1 einen Querschnitt durch eine Leitung nach der Erfindung.
  • Fig. 2 einen Querschnitt durch eine zweite Ausführungsform der Leitung.
Show it:
  • Fig. 1 a cross section through a conduit according to the invention.
  • Fig. 2 a cross-section through a second embodiment of the conduit.

In den Zeichnungen ist eine bevorzugte Ausführungsform der Leitung dargestellt, in der zwei der Stromversorgung dienende Adern zu einem Aderpaar miteinander verseilt sind. Die Leitung soll mindestens zwei der Stromversorgung dienende Adern haben, die mit einem in der Leitungsseele außerdem vorhandenen Sternvierer verseilt sind. In der folgenden Beschreibung wird die Leitung - stellvertretend auch für die anderen möglichen Ausführungsformen - für die bevorzugte Ausführungsform beschrieben.In the drawings, a preferred embodiment of the line is shown 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. In the following description, the line - also representative of the other possible embodiments - for the preferred embodiment will be described.

Die Leitung nach Fig. 1 besteht aus einem der Stromversorgung dienenden Aderpaar A und einem der Datenübertragung dienenden Sternvierer S. Im Aderpaar A sind zwei aus einem isolierten elektrischen Leiter bestehende Adern 1 miteinander verseilt. Die Verseilschlaglänge des Aderpaars A liegt mit Vorteil im Bereich von 8 x D1 bis 14 x D1 mit dem Durchmesser D 1 des Aderpaars in mm. Der Sternvierer S weist vier miteinander verseilte Adern 2 auf, die jeweils aus einem isolierten Leiter bestehen. Die Verseilschlaglänge des Sternvierer S liegt mit Vorteil im Bereich zwischen 5 x D2 und 8 x D2 mit dem Durchmesser D2 des Sternvierers in mm. Aderpaar A und Sternvierer S sind miteinander verseilt. Sie bilden zusammen mit zwei Füllelementen 3 und 4 aus Kunststoff die Leitungsseele der Leitung. Die Füllelemente 3 und 4 bestehen vorzugsweise aus Polypropylenfasern oder aus Polytetrafluorethylen (PTFE) niedriger Dichte. Die Verseilung von Aderpaar A und Sternvierer S zur Leitungsseele erfolgt vorzugsweise im Gegenschlag zur Verseilrichtung der Adern 1 des Aderpaars A einerseits und der Adern 2 des Sternvierers S andererseits. Die Verseilschlaglänge liegt mit Vorteil im Bereich von 6 x D3 bis 14 x D3 mit dem Durchmesser D3 der Leitungsseele in mm.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. In 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. They form together with two filling elements 3 and 4 made of plastic, the line core of the line. 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.

Über der Leitungsseele ist eine Schicht 5 aus Isoliermaterial angebracht, welche von einem elektrischen Schirm umgeben ist. Der Schirm hat eine an der Schicht 5 anliegende erste Lage 6, welche vorzugsweise als Geflecht bzw. Umseilung aus Kupferdrähten ausgeführt ist. Über der ersten Lage 6 des Schirms ist eine zweite Lage 7 desselben angeordnet, welche aus elektrisch leitfähig gemachtem Vliesmaterial besteht. Ein äußerer Mantel 8 aus Isoliermaterial umgibt die zweite Lage 7 des Schirms.Over the line core, 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. Above the first layer 6 of the screen, 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.

Die Leiter der Adern 2 des Sternvierers S sind vorzugsweise als aus sieben Kupferdrähten bestehende Litzenleiter mit einem Querschnitt von beispielsweise 0,25 mm2 ausgeführt. Zur Vergrößerung des elektrisch leitenden Querschnitts dieser Leiter können in den Außenzwickeln der Drähte zusätzlich sechs dünnere Kupferdrähte angeordnet sein. Das führt gegebenenfalls zu einer weiteren Verminderung der Leitungsdämpfung. Die Drähte des Litzenleiters können auch aus einer Kupferlegierung bestehen, wie beispielsweise einer Kupfer-Zinn-Legierung. Zur Einhaltung eines vorgegebenen Durchmessers von beispielsweise 1,05 mm maximal für die Adern 2 besteht die Isolierung der Leiter aus maßgenau zu extrudierendem massivem Material, insbesondere aus Polyethylen (PE), Polypropylen (PP) oder aus einem Fluorpolymer (FEP, PTFE, PFA), wenn die Leitung in Gebieten mit hohen Temperaturen eingesetzt werden soll.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 . In order to increase the electrically conductive cross section of these conductors, 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. To comply with a predetermined diameter of, for example, 1.05 mm maximum for the wires 2, 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.

Der Sternvierer S wird in üblicher Technik durch Verseilen von vier Adern 2 vorzugsweise mit Rückdrehung der Adern, hergestellt, so daß sich ein drallfreier Sternvierer mit maßgenau positionierten Adern ergibt.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.

Die Leiter der Adern 1 des für die Stromversorgung vorgesehenen Aderpaars A haben beispielsweise einen Querschnitt von 0,38 mm2. Der Durchmesser der Adern 1 kann ebenfalls beispielsweise maximal 1,05 mm betragen.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.

Die Schicht 5 aus Isoliermaterial besteht mit Vorteil aus einem PP-Vliesmaterial, aus einem geschäumten PP oder auch aus einem PTFE niederer Dichte, wenn die Leitung bei hohen Temperaturen eingesetzt werden soll. Ein Band aus einem derartigen Material kann vorzugsweise mit Überlappung um die Leitungsseele herumgewickelt werden. Die Schicht 5 kann in einer abgewandelten Ausführungsform auch als sogenannter Innenmantel ausgeführt sein, der auch die Zwickel zwischen dem Sternvierer S und dem Aderpaar A ausfüllt. Die separaten Füllelemente 3 und 4 entfallen dann.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. In a modified embodiment, 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.

Die Kupferdrähte des Geflechts bzw. der Umseilung können verzinnt sein. Beim Einsatz der Leitung bei höheren Temperaturen können auch versilberte oder vernickelte Kupferdrähte verwendet werden.The copper wires of the braid or Umseilung can be tinned. When using the cable at higher temperatures, silver-plated or nickel-plated copper wires can also be used.

Das Vliesmaterial der zweiten Lage 7 des Schirms ist in bevorzugter Ausführungsform ein Polyester. Es kann, insbesondere bei höheren Betriebstemperaturen, aber auch aus anderen geeigneten Kunststoffen bestehen, wie beispielsweise Aramid oder Glasfasern. Seine Wandstärke bzw. Dicke liegt vorzugsweise zwischen 80 µm und 300 µm. Für seine Metallisierung wird mindestens ein elektrisch gut leitendes Metall verwendet, insbesondere Kupfer oder Silber. Eine so erzeugte Kupferschicht kann mit einer zusätzlichen Nickelschicht versehen werden. Die Abscheidung des jeweiligen Metalls erfolgt mittels der Plasmatechnik aus der Dampfphase auf dem Vliesmaterial.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.

Dabei dringen die Metalldämpfe auch in die relativ offene Faserstruktur des Vliesmaterials ein und umhüllen die dort befindlichen, ungeordnet zusammengehaltenen Fasern. Insgesamt wird auf und in dem Vliesmaterial eine zwar poröse, aber nahezu geschlossene Metallschicht erzeugt, die eine Bedeckung von > 85 % für einen umschlossenen Gegenstand - hier ist es die erste Lage 6 des Schirms - ergibt. Das Vliesmaterial wird vorzugsweise als Band mit Überlappung um die erste Lage 6 des Schirms herumgewickelt.The metal vapors penetrate into the relatively open fiber structure of the nonwoven material and envelop the there, held disordered fibers. Overall, a porous, but almost closed metal layer is produced on and in the nonwoven material, which results in a coverage of> 85% for an enclosed object - here it is the first layer 6 of the screen. The nonwoven material is preferably wrapped as a tape with overlap around the first ply 6 of the screen.

Der Mantel 8 besteht beispielsweise aus Polyvinylchlorid, Polyurethan, einem thermoplastischen Elastomer, aus Silikon oder aus einem Fluorelastomer.The jacket 8 consists for example of polyvinyl chloride, polyurethane, a thermoplastic elastomer, silicone or a fluoroelastomer.

Die Leitung nach Fig. 1 ist beispielsweise für einen Einsatz in Schleppketten geeignet, in denen sie im wesentlichen auf Biegung beansprucht wird. Eine Leitung, die beispielsweise zum Einsatz bei Robotern bestimmt ist, geht aus Fig. 2 hervor. Eine solche Leitung wird nicht nur auf Biegung, sondern auch auf Torsion beansprucht. Die Leitungsseele der Leitung nach Fig. 2 entspricht einschließlich der dieselbe umgebenden Schicht 5 aus Isoliermaterial derjenigen nach Fig. 1.The line after Fig. 1 is suitable, for example, for use in drag chains, in which it is subjected to bending stress. A line that is intended for use with robots, for example, goes out Fig. 2 out. Such a line is claimed not only to bending, but also to torsion. The line core of the line after Fig. 2 including the same surrounding layer 5 of insulating material according to those Fig. 1 ,

Bei der Ausführungsform der Leitung nach Fig. 2 weist der elektrische Schirm zusätzlich eine innere Lage 9 aus zwei metallkaschierten Kunststoff-Folien auf, die einseitig oder beidseitig eine Metallschicht aufweisen können. Die beiden Folien sind mit Vorteil jeweils mit Lücke um die Schicht 5 herumgewickelt. Dabei überdeckt die außen liegende Folie vorzugsweise die Lücken der innen liegenden Folie. Die Folien bestehen jeweils beispielsweise aus Polyester, Polyimid oder PEEK mit einer einseitigen oder beidseitigen Beschichtung aus Kupfer oder Aluminium. Über der inneren Lage 9 des Schirms ist die erste Lage 6 desselben angebracht, die dann mit Vorteil als Umseilung aus verzinnten, versilberten oder vernickelten Kupferdrähten ausgeführt ist. Die zweite Lage 7 des Schirms kann bei dieser Ausführungsform der Leitung auch aus zwei Bändern aus dem oben erläuterten metallisierten Vliesmaterial bestehen, die mit Lücke auf die erste Lage 6 aufgewickelt sind. Das außen liegende Band überdeckt dabei die Lücken des innen liegenden Bandes.In the embodiment of the line after Fig. 2 In addition, 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. In this case, 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. Over the inner layer 9 of the screen, 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.

Claims (4)

  1. Electrical line for the connection of non-stationary electrical loads to a power source, which line has a line core surrounded by a jacket of insulating material, in which line core wires consisting of insulated electrical conductors used both for the transmission of data and forsupplying power are arranged and in which the line core is surrounded by an electrical screen having two layers, one of which is constructed as braid or stranded cover layer of copper wires and the other one of which is constructed of a fleece material consisting of synthetic material made electrically conductive, characterized in
    - that four wires (2), stranded together to form one star quad (S), for the transmission of data are arranged in the line core,
    - that at least two wires (1) used for supplying power are also placed in the line core,
    - that the starquad (S) and the wires (1) used for supplying power are stranded together as stranding elements for forming the line core,
    - that, over the line core, a layer(5) ofinsulating material is placed, overwhich a braid or a stranded cover layer of copper wires is arranged in a first layer (6) as part of the electrical screen,
    - that the fleece material consisting of synthetic material and made electrically conductive is placed in at least one layer over the first layer(6) as second layer(7) of the electrical screen, and
    - that the fleece material is surrounded by the jacket (8) of insulating material.
  2. line according to claim 1, characterized in
    - that two wires (1) used for supplying power are provided which are stranded together to form one pairofwires(A), and
    - that the starquad (S) and the pair of wires (A) are stranded together.
  3. line according to claim 1 or 2, characterized in that the layer (5) of insulating material consists of a material based on polypropylene or of a low-density polytetrafluoroethylene.
  4. line according to one of the claims 1 to 3, characterized in that, firstly, two metal-clad foils of synthetic material which have a metal layer on one side oron both sides are wound in each case with a gap over the layer(5) of insulating material as inner layer (9) of the sc re e n, the outer foil covering the gaps of the inner foil over which the first layer (6), preferably constructed as stranded coverlayer, of the screen is placed.
EP09305571A 2008-09-12 2009-06-19 Electric cable for connecting to mobile electrical devices Not-in-force EP2172946B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09305571A EP2172946B1 (en) 2008-09-12 2009-06-19 Electric cable for connecting to mobile electrical devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08290856 2008-09-12
EP09305571A EP2172946B1 (en) 2008-09-12 2009-06-19 Electric cable for connecting to mobile electrical devices

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EP2172946A1 EP2172946A1 (en) 2010-04-07
EP2172946B1 true EP2172946B1 (en) 2011-01-05

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AT (1) ATE494617T1 (en)
DE (1) DE502009000273D1 (en)

Cited By (1)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107993753A (en) * 2017-12-29 2018-05-04 东莞金信诺电子有限公司 A kind of small outside diameter high-speed cable of low-loss
DE102019108060A1 (en) * 2019-03-28 2020-10-01 Leoni Kabel Gmbh Cable for electrical data transmission and manufacturing method for a cable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10162739A1 (en) * 2001-12-20 2003-07-03 Nexans Flexible electrical wire
ES2285302T3 (en) * 2004-04-19 2007-11-16 Nexans ELECTRICAL POWER AND CONTROL CABLE, FLEXIBLE.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3336856A1 (en) 2016-12-16 2018-06-20 Nexans Electrical conduit
WO2018109214A1 (en) 2016-12-16 2018-06-21 Nexans Assembly with an electric cable and a power source

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DE502009000273D1 (en) 2011-02-17
EP2172946A1 (en) 2010-04-07
ATE494617T1 (en) 2011-01-15

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