EP2096645A1 - Electrical conductor - Google Patents

Electrical conductor Download PDF

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Publication number
EP2096645A1
EP2096645A1 EP08290201A EP08290201A EP2096645A1 EP 2096645 A1 EP2096645 A1 EP 2096645A1 EP 08290201 A EP08290201 A EP 08290201A EP 08290201 A EP08290201 A EP 08290201A EP 2096645 A1 EP2096645 A1 EP 2096645A1
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EP
European Patent Office
Prior art keywords
wires
conductor
layer
core
plated
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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.)
Granted
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EP08290201A
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German (de)
French (fr)
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EP2096645B1 (en
Inventor
Ferdinand Grögl
Thomas Mann
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Nexans SA
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Nexans SA
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Publication date
Application filed by Nexans SA filed Critical Nexans SA
Priority to AT08290201T priority Critical patent/ATE483235T1/en
Priority to EP08290201A priority patent/EP2096645B1/en
Priority to DE502008001438T priority patent/DE502008001438D1/en
Priority to US12/361,717 priority patent/US7847192B2/en
Priority to CN2009100075702A priority patent/CN101521051B/en
Priority to AU2009200712A priority patent/AU2009200712A1/en
Priority to KR1020090016528A priority patent/KR20090092254A/en
Publication of EP2096645A1 publication Critical patent/EP2096645A1/en
Application granted granted Critical
Publication of EP2096645B1 publication Critical patent/EP2096645B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • 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
    • H01B7/0009—Details relating to the conductive cores
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/006—Constructional features relating to the conductors

Definitions

  • the invention relates to an electrical conductor having a central core and at least two layers of electrically conductive individual wires arranged above it, which are wound around the core in a first position and around the first layer in a second position ( DE 10 2004 041 452 A1 ).
  • Such a conductor is used for example in motor vehicles, for example in wiring or sensor cables. However, it is basically usable wherever electrical power or data is to be transmitted.
  • the conductor For use in motor vehicles, the conductor must be well bendable, flexible and resistant to tension and be able to withstand combined mechanical stresses in special applications, because equipped with such a conductor lines in the vehicle during operation are constantly exposed to vibrations and shocks.
  • the well-known conductor after the aforementioned DE 10 2004 041 452 A1 has a trained as a tensile element, non-metallic core.
  • a second layer of likewise consisting of copper wires is stranded with a circular cross-section, whose diameter and number are such that If the wires are close to each other, a nearly smooth outer surface of the conductor results as a support for an insulation to be applied to the same.
  • This ladder has proven itself in practice.
  • the invention has for its object to improve the above-described conductor with respect to tensile strength and vibration resistance on.
  • This ladder meets all mechanical requirements, as they are made for example for its use in motor vehicles, in the long run. It is resistant to tension by the steel wires without tensile core element and also resistant to bending, torsion and vibration when using high-strength steel wires.
  • the good bendability of the conductor is ensured on the one hand by the dimensionally stable concentric structure of the two roped-up layers and on the other hand by their short stranding length.
  • the conductor is also well suited for the electrically conductive connection of contact elements by crimping due to its special construction.
  • the first layer of the conductor in a preferred embodiment consists of high-strength steel wires
  • they can be mechanically formed by a known in the steel rope production preforming process of the individual steel wires or in a post-forming process of the roped-up layer by rolling mechanical stresses are reduced in the finished conductor, whereby in addition to the good flexibility of the conductor and a swirl freedom is given the same.
  • Fig. 1 a side view of the conductor according to the invention with sections removed layers.
  • Fig. 2 a cut through Fig. 1 along the line II - II in an enlarged view.
  • the conductor L has a central core 1, around which in a first layer 2 steel wires 3 are wound around. Above the first layer 2, a second layer 4 is arranged, which consists of copper wires 5 which are wound around the steel wires 3.
  • the conductor L may be surrounded by an insulation 6 produced, for example, by extrusion and / or winding. However, it can also be further-stranded with at least two further, identically constructed conductors to form a stranded conductor cable.
  • the core 1 is a wire made of soft annealed during a drawing process, preferably oxygen-free copper. It has a breaking strength of at least 210 N / mm 2 .
  • the core 1 can be designed as a bare copper wire. But it can also be tinned, silvered or nickel plated.
  • the steel wires 3 have a breaking strength of between 800 N / mm 2 and 2200 N / mm 2 . They can be tinned with advantage.
  • the steel wires 3 are made of stainless steel.
  • the copper wires 5 have a breaking strength of between 250 N / mm 2 and 400 N / mm 2 . Like the wire of the core 1, they can be designed as bare wires or tin-plated, silver-plated or nickel-plated.
  • Steel wires 3 and copper wires 5 can be stranded with the same direction of impact, but also with opposite direction of impact on their respective surface. They can also be applied with advantage under the same stranding angle.
  • the lay length of the copper wires 5 in the second layer 4 is between 8 ⁇ D and 18 ⁇ D.
  • D is the diameter of the conductor L over the second layer 4.
  • the conductor L is made, for example, as follows:
  • a wire of annealed copper is withdrawn as a core 1 from a spool and fed to a stranding unit in which the steel wires 3 of the first layer 2 are twisted around the core 1.
  • the copper wires 5 of the second layer 4 can be roped on the same in a second stranding unit.
  • the finished conductor L can then be wound onto a spool or fed to a further processing.
  • a stranding process in which the steel wires 3 and the copper wires 5 run from individual coils is performed, for example, on a tubular stranding machine.
  • the wires are thereby roped with a reverse rotation of about 90%.
  • the two layers 2 and 4, and thus also the conductor L, are already largely free of mechanical stresses as a result of such preforming.
  • Such a stranding process is advantageously used for conductors L that are subjected to high mechanical stresses in terms of bending, torsion and vibration during operation.
  • steel wires 3 having a breaking strength of between 800 N / mm 2 and 1200 N / mm 2 can preferably be used.
  • Such steel wires 3 can be simultaneously pulled down on multi-wire drawers and wound together in parallel. They can be tin-plated or, in the case of thermally highly stressed conductors L, preferably consist of stainless steel.
  • the starting material for these steel wires may each be bars of mild steel, which are drawn down in a coarse drawing process in each case to a Vorziehdraht and then tinned in a galvanic process or in a Feuerverzinnprozeß.
  • the tinned steel wires 3 still have a remaining tin layer thickness of at least 0.5 .mu.m.
  • the breaking strength of the steel wires is increased by the drawing process itself to the desired final value of 800 N / mm 2 to 1200 N / mm 2 .
  • the stranding process for such a conductor L can take place in a single working process with, for example, three tangential delivery bobbins via a high-speed ironing machine in a known double-pass stranding technique.
  • a second coil On one of the coils of the copper wire 1 is wound, a second coil has, for example, six parallel wound steel wires 3 and the third coil, for example, twelve parallel wound copper wires 5.
  • Such a manufactured conductor L can be fed directly to subsequent processing without subsequent mechanical processing, so for example be provided with the insulation 6.
  • a conductor L can be used for example in the wiring technology of motor vehicles as a single-core or as a multi-core cable in the conductor cross-sectional area between 0.25 mm 2 and 2.5 mm 2 .
  • the use of six steel wires 3 in a 19-wire conductor L reduces its electrical conductivity compared to a copper conductor of the same dimensions, the breaking strength of the conductor L can be doubled compared to a copper conductor of the same cross-section. This is advantageous in the short in this application ladders noticeable in which an increased DC resistance, for example, for a signal transmission is insignificant.

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  • Non-Insulated Conductors (AREA)
  • Insulated Conductors (AREA)
  • Ropes Or Cables (AREA)
  • Conductive Materials (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

The conductor (L) has two layers arranged above a central core (1) with a set of conductive wires that are twisted around the core in two layers. The wires of one of the layers are steel wires (3) with an ultimate tensile strength between 800 and 2200 Newton per square milli meter (N/mm2). The wires of the other layer are copper wires (5) with an ultimate tensile strength between 250 and 400 N/mm2, where the length of the copper wires is between 8 and 18 times of diameter of the conductor over the steel wires. The copper wires and the core are tinned, silver-plated or nickel-plated.

Description

Die Erfindung bezieht sich auf einen elektrischen Leiter, der einen zentralen Kern und mindestens zwei über demselben angeordnete Lagen aus elektrisch leitenden Einzeldrähten aufweist, die in einer ersten Lage um den Kern und in einer zweiten Lage um die erste Lage herumverseilt sind ( DE 10 2004 041 452 A1 ).The invention relates to an electrical conductor having a central core and at least two layers of electrically conductive individual wires arranged above it, which are wound around the core in a first position and around the first layer in a second position ( DE 10 2004 041 452 A1 ).

Ein derartiger Leiter wird beispielsweise in Kraftfahrzeugen eingesetzt, beispielsweise in Verdrahtungs- oder Sensorleitungen. Er ist aber grundsätzlich überall dort verwendbar, wo elektrischer Strom oder Daten zu übertragen sind. Für den Einsatz in Kraftfahrzeugen muß der Leiter gut biegbar, flexibel und zugfest sein und in besonderen Einsatzbereichen auch kombinierte mechanische Belastungen aushalten können, weil mit einem derartigen Leiter ausgerüstete Leitungen im Kraftfahrzeug bei laufendem Betrieb dauernd Schwingungen und Erschütterungen ausgesetzt sind.Such a conductor is used for example in motor vehicles, for example in wiring or sensor cables. However, it is basically usable wherever electrical power or data is to be transmitted. For use in motor vehicles, the conductor must be well bendable, flexible and resistant to tension and be able to withstand combined mechanical stresses in special applications, because equipped with such a conductor lines in the vehicle during operation are constantly exposed to vibrations and shocks.

Der bekannte Leiter nach der eingangs erwähnten DE 10 2004 041 452 A1 hat einen als zugfestes Element ausgebildeten, nicht metallischen Kern. Um den Kern sind in einer ersten Lage aus Kupfer bestehende Drähte mit kreisrundem Querschnitt dicht an dicht liegend herum verseilt und über der ersten Lage ist eine zweite Lage von ebenfalls aus Kupfer bestehenden Drähten mit kreisrundem Querschnitt aufgeseilt, deren Durchmesser und Anzahl so bemessen sind, daß sich bei dicht an dicht liegenden Drähten eine nahezu glatte äußere Oberfläche des Leiters als Unterlage für eine auf denselben aufzubringende Isolierung ergibt. Dieser Leiter hat sich in der Praxis bewährt.The well-known conductor after the aforementioned DE 10 2004 041 452 A1 has a trained as a tensile element, non-metallic core. Around the core are in a first layer of copper existing wires with a circular cross section stranded close to lying around and above the first layer a second layer of likewise consisting of copper wires is stranded with a circular cross-section, whose diameter and number are such that If the wires are close to each other, a nearly smooth outer surface of the conductor results as a support for an insulation to be applied to the same. This ladder has proven itself in practice.

Der Erfindung liegt die Aufgabe zugrunde, den eingangs geschilderten Leiter bezüglich Zugfestigkeit und Vibrationsfestigkeit weiter zu verbessern.The invention has for its object to improve the above-described conductor with respect to tensile strength and vibration resistance on.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst,

  • daß als Kern ein aus einem weichgeglühten Kupfer bestehender Draht mit einer Bruchfestigkeit von mindestens 210 N/mm2 eingesetzt ist,
  • daß die Einzeldrähte der ersten Lage Stahldrähte mit einer zwischen 800 N/mm2 und 2200 N/mm2 liegenden Bruchfestigkeit sind und
  • daß die Einzeldrähte der zweiten Lage Kupferdrähte mit einer zwischen 250 N/mm2 und 400 N/mm2 liegenden Bruchfestigkeit sind, deren Schlaglänge zwischen 8 x D und 18 x D liegt, wobei D der Durchmesser des Leiters über der zweiten Lage ist.
This object is achieved according to the invention characterized
  • in that a wire consisting of a soft-annealed copper with a breaking strength of at least 210 N / mm 2 is used as the core,
  • in that the individual wires of the first layer are steel wires with a breaking strength between 800 N / mm 2 and 2200 N / mm 2 , and
  • that the individual wires of the second layer are copper wires with a breaking strength lying between 250 N / mm 2 and 400 N / mm 2 , whose lay length is between 8 x D and 18 x D, where D is the diameter of the conductor over the second layer.

Dieser Leiter genügt allen mechanischen Anforderungen, wie sie beispielsweise für seinen Einsatz in Kraftfahrzeugen gestellt werden, auf Dauer. Er ist durch die Stahldrähte auch ohne zugfestes Kernelement zugfest und außerdem bei Verwendung von hochfesten Stahldrähten auch biege-, torsions- und vibrationsbeständig. Die gute Biegbarkeit des Leiters ist einerseits durch den formstabilen konzentrischen Aufbau der beiden aufgeseilten Lagen und andererseits durch deren kurze Verseilschlaglänge gewährleistet. Der Leiter ist durch seinen speziellen Aufbau außerdem gut für den elektrisch leitenden Anschluß von Kontaktelementen durch Crimpen geeignet.This ladder meets all mechanical requirements, as they are made for example for its use in motor vehicles, in the long run. It is resistant to tension by the steel wires without tensile core element and also resistant to bending, torsion and vibration when using high-strength steel wires. The good bendability of the conductor is ensured on the one hand by the dimensionally stable concentric structure of the two roped-up layers and on the other hand by their short stranding length. The conductor is also well suited for the electrically conductive connection of contact elements by crimping due to its special construction.

Wenn die erste Lage des Leiters in bevorzugter Ausführungsform aus hochfesten Stahldrähten besteht, können dieselben durch einen in der Stahlseilfertigung bekannten Vorformprozeß der einzelnen Stahldrähte oder in einem Nachformprozeß der aufgeseilten Lage durch Rollen mechanisch so geformt werden, daß im fertigen Leiter mechanische Spannungen abgebaut werden, wodurch neben der guten Biegbarkeit des Leiters auch eine Drallfreiheit desselben gegeben ist.If the first layer of the conductor in a preferred embodiment consists of high-strength steel wires, they can be mechanically formed by a known in the steel rope production preforming process of the individual steel wires or in a post-forming process of the roped-up layer by rolling mechanical stresses are reduced in the finished conductor, whereby in addition to the good flexibility of the conductor and a swirl freedom is given the same.

Ein Ausführungsbeispiel des Erfindungsgegenstandes ist in den Zeichnungen dargestellt.An embodiment of the subject invention is shown in the drawings.

Es zeigen:Show it:

Fig. 1 eine Seitenansicht des Leiters nach der Erfindung mit abschnittsweise entfernten Schichten.
Fig. 2 einen Schnitt durch Fig. 1 längs der Linie II - II in vergrößerter Darstellung. Fig. 1 a side view of the conductor according to the invention with sections removed layers.
Fig. 2 a cut through Fig. 1 along the line II - II in an enlarged view.

Der Leiter L hat einen zentralen Kern 1, um den herum in einer ersten Lage 2 Stahldrähte 3 herumverseilt sind. Über der ersten Lage 2 ist eine zweite Lage 4 angeordnet, die aus Kupferdrähten 5 besteht, welche um die Stahldrähte 3 herumverseilt sind. Der Leiter L kann von einer beispielsweise durch Extrusion und/oder Bewicklung erzeugten Isolierung 6 umgeben sein. Er kann aber auch mit mindestens zwei weiteren, gleich aufgebauten Leitern zu einem vieldrähtigen Leiterseil weiterverseilt werden.The conductor L has a central core 1, around which in a first layer 2 steel wires 3 are wound around. Above the first layer 2, a second layer 4 is arranged, which consists of copper wires 5 which are wound around the steel wires 3. The conductor L may be surrounded by an insulation 6 produced, for example, by extrusion and / or winding. However, it can also be further-stranded with at least two further, identically constructed conductors to form a stranded conductor cable.

Der Kern 1 ist ein aus während eines Ziehprozesses weichgeglühtem, vorzugsweise sauerstofffreiem Kupfer bestehender Draht. Er hat eine Bruchfestigkeit von mindestens 210 N/mm2. Der Kern 1 kann als blanker Kupferdraht ausgeführt sein. Er kann aber auch verzinnt, versilbert oder vernickelt sein.The core 1 is a wire made of soft annealed during a drawing process, preferably oxygen-free copper. It has a breaking strength of at least 210 N / mm 2 . The core 1 can be designed as a bare copper wire. But it can also be tinned, silvered or nickel plated.

Die Stahldrähte 3 haben eine Bruchfestigkeit, die zwischen 800 N/mm2 und 2200 N/mm2 liegt. Sie können mit Vorteil verzinnt sein. Vorzugsweise bestehen die Stahldrähte 3 aus Edelstahl.The steel wires 3 have a breaking strength of between 800 N / mm 2 and 2200 N / mm 2 . They can be tinned with advantage. Preferably, the steel wires 3 are made of stainless steel.

Die Kupferdrähte 5 haben eine Bruchfestigkeit, die zwischen 250 N/mm2 und 400 N/mm2 liegt. Sie können ebenso wie der Draht des Kerns 1 als blanke Drähte ausgeführt bzw. verzinnt, versilbert oder vernickelt sein.The copper wires 5 have a breaking strength of between 250 N / mm 2 and 400 N / mm 2 . Like the wire of the core 1, they can be designed as bare wires or tin-plated, silver-plated or nickel-plated.

Stahldrähte 3 und Kupferdrähte 5 können mit gleicher Schlagrichtung, aber auch mit entgegengesetzter Schlagrichtung auf ihre jeweilige Unterlage aufgeseilt sein. Sie können mit Vorteil auch unter dem gleichen Verseilwinkel aufgebracht sein. Die Schlaglänge der Kupferdrähte 5 in der zweiten Lage 4 liegt zwischen 8 x D und 18 x D. Dabei ist D der Durchmesser des Leiters L über der zweiten Lage 4.Steel wires 3 and copper wires 5 can be stranded with the same direction of impact, but also with opposite direction of impact on their respective surface. They can also be applied with advantage under the same stranding angle. The lay length of the copper wires 5 in the second layer 4 is between 8 × D and 18 × D. Here, D is the diameter of the conductor L over the second layer 4.

Der Leiter L wird beispielsweise wie folgt hergestellt:The conductor L is made, for example, as follows:

Ein Draht aus weichgeglühtem Kupfer wird als Kern 1 von einer Spule abgezogen und einer Verseileinheit zugeführt, in welcher die Stahldrähte 3 der ersten Lage 2 um den Kern 1 herumverseilt werden. Im gleichen Arbeitsgang können die Kupferdrähte 5 der zweiten Lage 4 in einer zweiten Verseileinheit auf dieselbe aufgeseilt werden. Der fertige Leiter L kann dann auf eine Spule aufgewickelt oder einer Weiterverarbeitung zugeführt werden.A wire of annealed copper is withdrawn as a core 1 from a spool and fed to a stranding unit in which the steel wires 3 of the first layer 2 are twisted around the core 1. In the same operation, the copper wires 5 of the second layer 4 can be roped on the same in a second stranding unit. The finished conductor L can then be wound onto a spool or fed to a further processing.

Ein Verseilprozeß, bei dem die Stahldrähte 3 und die Kupferdrähte 5 von einzelnen Spulen ablaufen, wird beispielsweise auf einer Rohrverseilmaschine durchgeführt. Die Drähte werden dabei mit einer Rückdrehung von etwa 90 % aufgeseilt. Die beiden Lagen 2 und 4 und damit auch der Leiter L sind durch eine derartige Vorformung schon weitgehendst frei von mechanischen Spannungen. Ein solcher Verseilprozeß wird mit Vorteil für Leiter L eingesetzt, die im Betrieb hohen mechanischen Beanspruchungen bezüglich Biegung, Torsion und Vibration ausgesetzt werden.A stranding process in which the steel wires 3 and the copper wires 5 run from individual coils is performed, for example, on a tubular stranding machine. The wires are thereby roped with a reverse rotation of about 90%. The two layers 2 and 4, and thus also the conductor L, are already largely free of mechanical stresses as a result of such preforming. Such a stranding process is advantageously used for conductors L that are subjected to high mechanical stresses in terms of bending, torsion and vibration during operation.

Zur weiteren Reduzierung von mechanischen Spannungen kann der Leiter L nach dem Aufseilen von in bevorzugter Ausführungsform hochfesten Stahldrähten 3 als erste Lage 2 zunächst noch einem mechanischen Nachformprozeß zugeführt werden, in welchem die Stahldrähte 3 in aus der Seilherstellung bekannter Technik beispielsweise über mehrere Rollenpaare mechanisch verformt bzw. umgeformt werden.To further reduce mechanical stresses, the conductor L after stranding of in a preferred embodiment high strength steel wires 3 as a first layer 2 initially a mechanical Nachformprozeß be supplied in which the steel wires 3 mechanically deformed in known from the rope manufacturing technique, for example, over several pairs of rollers or to be reshaped.

Bei Leitern L die nur eine im Vergleich zu Kupfer deutlich höhere Bruchfestigkeit haben sollen, für die aber keine zusätzlichen mechanischen Anforderungen bestehen, können vorzugsweise Stahldrähte 3 mit einer Bruchfestigkeit zwischen 800 N/mm2 und 1200 N/mm2 eingesetzt werden. Derartige Stahldrähte 3 können auf Mehrfachdraht -ziehanlagen gleichzeitig heruntergezogen und gemeinsam parallel aufgewickelt werden. Sie können verzinnt werden oder bei thermisch hoch beanspruchten Leitern L vorzugsweise aus Edelstahl bestehen. Das Ausgangsmaterial für diese Stahldrähte können jeweils Stangen aus Weichstahl sein, welche in einem Grobziehprozeß jeweils zu einem Vorziehdraht heruntergezogen und anschließend in einem galvanischen Prozeß oder auch in einem Feuerverzinnprozeß verzinnt werden. Nach einem Feinziehprozeß weisen die verzinnten Stahldrähte 3 noch eine verbleibende Zinnschichtdicke von mindestens 0,5 µm auf. Die Bruchfestigkeit der Stahldrähte wird durch den Ziehprozeß selbst auf den gewünschten Endwert von 800 N/mm2 bis 1200 N/mm2 erhöht.For conductors L which are intended to have only a significantly higher breaking strength than copper, but for which no additional mechanical requirements exist, steel wires 3 having a breaking strength of between 800 N / mm 2 and 1200 N / mm 2 can preferably be used. Such steel wires 3 can be simultaneously pulled down on multi-wire drawers and wound together in parallel. They can be tin-plated or, in the case of thermally highly stressed conductors L, preferably consist of stainless steel. The starting material for these steel wires may each be bars of mild steel, which are drawn down in a coarse drawing process in each case to a Vorziehdraht and then tinned in a galvanic process or in a Feuerverzinnprozeß. After a fining process, the tinned steel wires 3 still have a remaining tin layer thickness of at least 0.5 .mu.m. The breaking strength of the steel wires is increased by the drawing process itself to the desired final value of 800 N / mm 2 to 1200 N / mm 2 .

Der Verseilprozeß für einen derartigen Leiters L kann in einem einzigen Arbeitsprozeß mit beispielsweise drei Tangential-Ablaufspulen über eine Hochgeschwindigkeits-Bügelverseilmaschine in bekannter Doppelschlagverseiltechnik erfolgen. Auf einer der Spulen ist der Kupferdraht 1 aufgewickelt, eine zweite Spule hat beispielsweise sechs parallel aufgewickelte Stahldrähte 3 und die dritte Spule hat beispielsweise zwölf parallel aufgewickelte Kupferdrähte 5. Ein so gefertigter Leiter L kann ohne anschließende mechanische Bearbeitung direkt einer Weiterverarbeitung zugeführt werden, also beispielsweise mit der Isolierung 6 versehen werden.The stranding process for such a conductor L can take place in a single working process with, for example, three tangential delivery bobbins via a high-speed ironing machine in a known double-pass stranding technique. On one of the coils of the copper wire 1 is wound, a second coil has, for example, six parallel wound steel wires 3 and the third coil, for example, twelve parallel wound copper wires 5. Such a manufactured conductor L can be fed directly to subsequent processing without subsequent mechanical processing, so for example be provided with the insulation 6.

Ein Leiter L kann beispielsweise in der Verdrahtungstechnik von Kraftfahrzeugen als einadrige oder auch als mehradrige Leitung im Leiterquerschnittsbereich zwischen 0,25 mm2 und 2,5 mm2 verwendet werden. Durch den Einsatz von sechs Stahldrähten 3 in einem 19-drähtigen Leiter L wird zwar die elektrische Leitfähigkeit desselben im Vergleich zu einen dimensionsgleichen Kupferleiter reduziert, die Bruchfestigkeit des Leiters L kann jedoch gegenüber einem Kupferleiter gleichen Querschnitts verdoppelt werden. Das macht sich vorteilhaft bei den in diesem Anwendungsfall kurzen Leitern bemerkbar, bei denen ein erhöhter Gleichstromwiderstand beispielsweise für eine Signalübertragung unbedeutend ist.A conductor L can be used for example in the wiring technology of motor vehicles as a single-core or as a multi-core cable in the conductor cross-sectional area between 0.25 mm 2 and 2.5 mm 2 . Although the use of six steel wires 3 in a 19-wire conductor L reduces its electrical conductivity compared to a copper conductor of the same dimensions, the breaking strength of the conductor L can be doubled compared to a copper conductor of the same cross-section. This is advantageous in the short in this application ladders noticeable in which an increased DC resistance, for example, for a signal transmission is insignificant.

Claims (7)

Elektrischer Leiter, der einen zentralen Kern und mindestens zwei über demselben angeordnete Lagen aus elektrisch leitenden Einzeldrähten aufweist, die in einer ersten Lage um den Kern und in einer zweiten Lage um die erste Lage herumverseilt sind, dadurch gekennzeichnet, - daß als Kern (1) ein aus einem weichgeglühten Kupfer bestehender Draht mit einer Bruchfestigkeit von mindestens 210 N/mm2 eingesetzt ist, - daß die Einzeldrähte der ersten Lage (2) Stahldrähte (3) mit einer zwischen 800 N/mm2 und 2200 N/mm2 liegenden Bruchfestigkeit sind und - daß die Einzeldrähte der zweiten Lage (4) Kupferdrähte (5) mit einer zwischen 250 N/mm2 und 400 N/mm2 liegenden Bruchfestigkeit sind, deren Schlaglänge zwischen 8 x D und 18 x D liegt, wobei D der Durchmesser des Leiters (L) über der zweiten Lage ist. An electrical conductor having a central core and at least two layers of electrically conductive individual wires arranged above it, which are wound around the core in a first layer and around the first layer in a second layer, characterized in that the core (1) used is a wire made of a soft-annealed copper with a breaking strength of at least 210 N / mm 2 , - That the individual wires of the first layer (2) are steel wires (3) with a lying between 800 N / mm 2 and 2200 N / mm 2 breaking strength and - That the individual wires of the second layer (4) copper wires (5) with a lying between 250 N / mm 2 and 400 N / mm 2 breaking strength, the lay length between 8 x D and 18 x D, where D is the diameter of the conductor (L) is over the second layer. Leiter nach Anspruch 1, dadurch gekennzeichnet, daß als Kern (1) ein blanker Kupferdraht eingesetzt ist.Conductor according to Claim 1, characterized in that the core (1) used is a bare copper wire. Leiter nach Anspruch 1, dadurch gekennzeichnet, daß der Kern (1) verzinnt, versilbert oder vernickelt ist.Conductor according to Claim 1, characterized in that the core (1) is tin-plated, silver-plated or nickel-plated. Leiter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Stahldrähte (3) verzinnt sind oder aus Edelstahl bestehen.Ladder according to one of claims 1 to 3, characterized in that the steel wires (3) are tinned or made of stainless steel. Leiter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die erste, aus Stahldrähten (3) bestehende Lage (4) durch mechanische Bearbeitung frei von mechanischen Spannungen ist.Ladder according to one of Claims 1 to 4, characterized in that the first layer (4) consisting of steel wires (3) is free from mechanical stresses by mechanical treatment. Leiter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß Kupferdrähte (5) blanke Drähte sind.Conductor according to one of Claims 1 to 5, characterized in that copper wires (5) are bare wires. Leiter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Kupferdrähte (5) verzinnt, versilbert oder vernickelt sind.Conductor according to one of Claims 1 to 5, characterized in that the copper wires (5) are tin-plated, silver-plated or nickel-plated.
EP08290201A 2008-02-26 2008-02-26 Electrical conductor Not-in-force EP2096645B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT08290201T ATE483235T1 (en) 2008-02-26 2008-02-26 ELECTRICAL CONDUCTOR
EP08290201A EP2096645B1 (en) 2008-02-26 2008-02-26 Electrical conductor
DE502008001438T DE502008001438D1 (en) 2008-02-26 2008-02-26 Electrical conductor
US12/361,717 US7847192B2 (en) 2008-02-26 2009-01-29 Electrical conductor
CN2009100075702A CN101521051B (en) 2008-02-26 2009-02-23 Electrical conductor
AU2009200712A AU2009200712A1 (en) 2008-02-26 2009-02-23 An Electrical Conductor
KR1020090016528A KR20090092254A (en) 2008-02-26 2009-02-26 Electrical conductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08290201A EP2096645B1 (en) 2008-02-26 2008-02-26 Electrical conductor

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EP2096645A1 true EP2096645A1 (en) 2009-09-02
EP2096645B1 EP2096645B1 (en) 2010-09-29

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US (1) US7847192B2 (en)
EP (1) EP2096645B1 (en)
KR (1) KR20090092254A (en)
CN (1) CN101521051B (en)
AT (1) ATE483235T1 (en)
AU (1) AU2009200712A1 (en)
DE (1) DE502008001438D1 (en)

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CN101521051A (en) 2009-09-02
CN101521051B (en) 2012-07-04
US20090211784A1 (en) 2009-08-27
US7847192B2 (en) 2010-12-07
ATE483235T1 (en) 2010-10-15
AU2009200712A1 (en) 2009-09-10
EP2096645B1 (en) 2010-09-29
KR20090092254A (en) 2009-08-31
DE502008001438D1 (en) 2010-11-11

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