EP2793239B1 - Assembly with at least one electrical lead - Google Patents

Assembly with at least one electrical lead Download PDF

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Publication number
EP2793239B1
EP2793239B1 EP13305506.1A EP13305506A EP2793239B1 EP 2793239 B1 EP2793239 B1 EP 2793239B1 EP 13305506 A EP13305506 A EP 13305506A EP 2793239 B1 EP2793239 B1 EP 2793239B1
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EP
European Patent Office
Prior art keywords
conductor
insulation
screen
assembly
electrical
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Active
Application number
EP13305506.1A
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German (de)
French (fr)
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EP2793239A1 (en
Inventor
Helmut Dr. Steinberg
Roy Karchs
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
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Nexans SA
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Priority to EP13305506.1A priority Critical patent/EP2793239B1/en
Publication of EP2793239A1 publication Critical patent/EP2793239A1/en
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Publication of EP2793239B1 publication Critical patent/EP2793239B1/en
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Classifications

    • 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
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1808—Construction of the conductors
    • 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
    • H01R4/04—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 using electrically conductive adhesives
    • 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
    • H01R4/58—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 characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail

Definitions

  • the invention relates to an arrangement with at least one electrical line according to the preamble of patent claim 1.
  • Such an arrangement is for example from the DE 199 07 675 A1 out.
  • Such arrangements with electrical lines are used with at least one insulated electrical conductor for a variety of applications worldwide for years.
  • the electrically effective screen of the conductors of such lines consists predominantly of copper wires, which are formed around as a braid or Umseilung to the insulation of a conductor.
  • the weight of such a conduit is determined essentially by the conductor and the screen. This is unfavorably noticeable in motor vehicles, in which a larger number of electrical lines is present, which are summarized, for example, in harnesses or harnesses to units.
  • the initially mentioned DE 199 07 675 A1 relates to a fiber composite cable screen having a high content of electrically conductive electromagnetic shielding fibers.
  • cables are a twisted double conductor and a Coaxial cable described.
  • the double conductor is electromagnetically shielded by a surrounding carbon fiber braid soaked with rubber solution.
  • the outer conductor of the coaxial cable consists of a carbon fiber braid.
  • a corresponding system leads to a lower weight of a wiring. It allows higher speeds on land vehicles.
  • the invention has for its object to reduce the weight of a particular intended for use in motor vehicles shielded electrical line.
  • the carbon is a fiber-plastic composite material in which carbon fibers are embedded in a plastic matrix.
  • the matrix can for example consist of a duromer, for example epoxy resin, or of a thermoplastic or of ceramic.
  • Carbon is thermally and electrically well conductive. However, it has a significantly lower electrical conductivity compared to copper. This is, for example, 0.0625 ⁇ 10 6 Sm / m. However, the conductivity of the carbon is sufficient for effective shielding of the enclosed conductor in the automotive field. Since the carbon is lighter than copper, a lead with conductors shielded with this material is lighter in weight than a lead with a copper shield surrounding the conductors.
  • a contact of the screen is advantageously made without metallic contact elements, by means of an electrically conductive adhesive through which the screen is connected to predetermined "grounding points" of the motor vehicle, for example, with the body thereof.
  • the conductor 1 may for example consist of copper or of aluminum or of an aluminum alloy. It can be designed as a solid conductor, but also as a stranded conductor, in which a number of existing of the conductor material wires is stranded together.
  • the conductor 1 is surrounded by an existing plastic insulation 2.
  • the insulated conductor is hereinafter referred to as "core A".
  • an electrically effective screen 3 is mounted all around, which is surrounded by a layer 4 of insulating material.
  • the layer 4 serves as protection against contact. It can therefore be made relatively thin.
  • the line L may also have more than one provided with a screen 3 core A.
  • suitable materials include polyethylene, polypropylene, polyvinyl chloride and polyurethane.
  • the layer 4 may, as already mentioned, be thin. Their thickness is adjusted depending on the material according to their abrasion resistance.
  • the screen 3 is made of carbon, with the electrical properties described in the foregoing.
  • the carbon is present for example in the form of fibers or filaments, which advantageously with for example by means of a commercially available braiding machine as a braid or in another embodiment as Umseilung to the insulation 2 of Core A can be formed around. It is also possible to first form a band from the carbon, which can be wrapped around the insulation 2 of the wire A gapless or even with overlap.
  • the carbon can also be preformed as a tube, in which the wire A is pulled or pushed. Such a hose can then be pulled down by tensile load until it touches the insulation 2 of the wire A. It can finally be solidified, for example, by the application of epoxy resin or polyester resin.
  • the layer 4 can be applied to the same in all described embodiments after completion of the screen 3, for example by means of an extruder.
  • the insulation 2 of the wire A consists according to Fig. 2 from a foamed plastic, for example made of polyethylene, which can be chemically foamed in a known technique.
  • a line L in the motor vehicle for example, to be connected to ground, then needs to be removed at a corresponding point in the course of the line L, which can be specified, only the lying on the screen 3 of a wire A layer 4.
  • the screen 3 is then available at this point. He can then according to the schematic representation in Fig. 3 are glued to a component 6 of the motor vehicle by means of an electrically conductive adhesive 5, with advantage to the body thereof.

Description

Die Erfindung bezieht sich auf eine Anordnung mit mindestens einer elektrische Leitung gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to an arrangement with at least one electrical line according to the preamble of patent claim 1.

Eine solche Anordnung geht beispielsweise aus der DE 199 07 675 A1 hervor.Such an arrangement is for example from the DE 199 07 675 A1 out.

Derartige Anordnungen mit elektrischen Leitungen werden mit mindestens einem isolierten elektrischen Leiter für unterschiedlichste Anwendungsfälle seit Jahren weltweit eingesetzt. Der elektrisch wirksame Schirm der Leiter solcher Leitungen besteht überwiegend aus Kupferdrähten, die als Geflecht oder Umseilung um die Isolierung eines Leiters herumgeformt sind. Das Gewicht einer solchen Leitung wird im wesentlichen durch den Leiter und den Schirm bestimmt. Das macht sich bei Kraftfahrzeugen ungünstig bemerkbar, in denen eine größere Anzahl von elektrischen Leitungen vorhanden ist, die beispielsweise in Kabelbäumen oder Kabelsätzen zu Einheiten zusammengefaßt sind.Such arrangements with electrical lines are used with at least one insulated electrical conductor for a variety of applications worldwide for years. The electrically effective screen of the conductors of such lines consists predominantly of copper wires, which are formed around as a braid or Umseilung to the insulation of a conductor. The weight of such a conduit is determined essentially by the conductor and the screen. This is unfavorably noticeable in motor vehicles, in which a larger number of electrical lines is present, which are summarized, for example, in harnesses or harnesses to units.

Die Hersteller von Kraftfahrzeugen sind seit Jahren bemüht, das Gewicht derselben insgesamt herabzusetzen, um insbesondere den Kraftstoffverbrauch zu reduzieren. Dazu ist es beispielsweise bekannt, Karosserien aus Kunststoff zu verwenden oder für die Leitungen Leiter aus Aluminium bzw. aus einer Aluminiumlegierung einzusetzen. Geschirmte Leitungen mit Leitern, die beispielsweise aus Aluminium bestehen, gehen zum Beispiel aus der EP 1 921 635 B1 hervor.The manufacturers of motor vehicles have been endeavoring for years to reduce their weight overall, in particular to reduce fuel consumption. For this purpose, it is known, for example, to use bodies made of plastic or to use conductors made of aluminum or an aluminum alloy for the lines. Shielded cables with conductors, which consist for example of aluminum, go for example from the EP 1 921 635 B1 out.

Die eingangs erwähnte DE 199 07 675 A1 betrifft einen Kabelschirm aus Faserverbundwerkstoff mit hohem Anteil an elektrisch leitfähigen Fasern zur elektromagnetischen Abschirmung. Als Kabel sind ein verdrillter Doppelleiter und ein Koaxialkabel beschrieben. Der Doppelleiter ist durch ein denselben umgebendes, mit Gummilösung getränktes Kohlefasergeflecht elektromagnetisch geschirmt. Der Außenleiter des Koaxialkabels besteht aus einem Kohlefasergeflecht. Ein entsprechendes System führt zu einem geringeren Gewicht einer Verkabelung. Es ermöglicht bei Landfahrzeugen höhere Geschwindigkeiten.The initially mentioned DE 199 07 675 A1 relates to a fiber composite cable screen having a high content of electrically conductive electromagnetic shielding fibers. As cables are a twisted double conductor and a Coaxial cable described. The double conductor is electromagnetically shielded by a surrounding carbon fiber braid soaked with rubber solution. The outer conductor of the coaxial cable consists of a carbon fiber braid. A corresponding system leads to a lower weight of a wiring. It allows higher speeds on land vehicles.

Der Erfindung liegt die Aufgabe zugrunde, das Gewicht einer für den Einsatz in Kraftfahrzeugen bestimmten geschirmten elektrischen Leitung herabzusetzen.The invention has for its object to reduce the weight of a particular intended for use in motor vehicles shielded electrical line.

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

Ein Kohlenstofffasern enthaltender Kunststoff wird umgangssprachlich als "Carbon" bezeichnet. Diese Kurzfassung wird im folgenden beibehalten. Beim Carbon handelt es sich um einen Faser-Kunststoff-Verbundwerkstoff, bei dem Kohlenstofffasern in eine Kunststoff-Matrix eingebettet sind. Die Matrix kann beispielsweise aus einem Duromer, zum Beispiel Epoxidharz, oder aus einem Thermoplast oder aus Keramik bestehen. Carbon ist thermisch und elektrisch gut leitfähig. Es hat allerdings gegenüber Kupfer eine deutlich geringere elektrische Leitfähigkeit. Diese liegt beispielsweise bei 0,0625 x 106 Sm/m. Die Leitfähigkeit des Carbons ist für eine wirksame Schirmung des umschlossenen Leiters im Automobilbereich aber ausreichend. Da das Carbon leichter als Kupfer ist, hat eine Leitung mit Leitern, die mit diesem Material geschirmt sind, gegenüber einer Leitung mit einem die Leiter umgebenden Kupferschirm ein geringeres Gewicht. Dieser Effekt macht sich besonders dann vorteilhaft bemerkbar, wenn eine größere Anzahl von Leitungen in einem Kraftfahrzeug vorhanden ist. Das Gewicht der Leitung ist dadurch weiter verringert, daß die Isolierung des Leiters bzw. der Leiter aus einem aufgeschäumten Kunststoff besteht. Eine Kontaktierung des Schirms wird mit Vorteil ohne metallische Kontaktelemente vorgenommen, und zwar mittels eines elektrisch leitenden Klebers, durch welchen der Schirm mit vorgegebenen "Erdungsstellen" des Kraftfahrzeugs verbunden wird, beispielsweise mit der Karosserie desselben.A carbon fiber-containing plastic is colloquially referred to as "carbon". This summary is maintained below. The carbon is a fiber-plastic composite material in which carbon fibers are embedded in a plastic matrix. The matrix can for example consist of a duromer, for example epoxy resin, or of a thermoplastic or of ceramic. Carbon is thermally and electrically well conductive. However, it has a significantly lower electrical conductivity compared to copper. This is, for example, 0.0625 × 10 6 Sm / m. However, the conductivity of the carbon is sufficient for effective shielding of the enclosed conductor in the automotive field. Since the carbon is lighter than copper, a lead with conductors shielded with this material is lighter in weight than a lead with a copper shield surrounding the conductors. This effect is particularly advantageous when a larger number of lines in a motor vehicle is present. The weight of the line is further reduced by the fact that the insulation of the conductor or the conductor consists of a foamed plastic. A contact of the screen is advantageously made without metallic contact elements, by means of an electrically conductive adhesive through which the screen is connected to predetermined "grounding points" of the motor vehicle, for example, with the body thereof.

Eine noch weitergehende Verminderung des Gewichts der Leitung ist dann gegeben, wenn als Leitermaterial in bekannter Technik Aluminium oder eine Aluminiumlegierung eingesetzt wird.An even further reduction in the weight of the line is given when aluminum or an aluminum alloy is used as the conductor material in a known technique.

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

Es zeigen:

  • Fig. 1 eine Seitenansicht einer elektrischen Leitung mit abschnittsweise entfernten Schichten.
  • Fig. 2 einen Schnitt durch Fig. 1 längs der Linie II - II.
  • Fig. 3 in schematischer Darstellung eine Kontaktstelle für eine Leitung nach den Fig. 1 und 2.
Show it:
  • Fig. 1 a side view of an electrical line with sections removed layers.
  • Fig. 2 a cut through Fig. 1 along the line II - II.
  • Fig. 3 in a schematic representation of a contact point for a line after the Fig. 1 and 2 ,

In Fig. 1 ist das Ende einer elektrischen Leitung L dargestellt, die einen elektrischen Leiter 1 aufweist. Der Leiter 1 kann beispielsweise aus Kupfer oder aus Aluminium bzw. aus einer Aluminiumlegierung bestehen. Er kann als Massivleiter, aber auch als Litzenleiter ausgeführt sein, in dem eine Anzahl von aus dem Leiterwerkstoff bestehenden Drähten miteinander verseilt ist. Der Leiter 1 ist von einer aus einem Kunststoff bestehenden Isolierung 2 umgeben. Der isolierte Leiter wird im Folgenden als "Ader A" bezeichnet. Um die Isolierung 2 ist rundherum ein elektrisch wirksamer Schirm 3 angebracht, der von einer Schicht 4 aus Isoliermaterial umgeben ist. Die Schicht 4 dient als Berührungsschutz. Sie kann daher relativ dünn ausgeführt sein. Die Leitung L kann auch mehr als eine mit einem Schirm 3 versehene Ader A aufweisen.In Fig. 1 the end of an electrical line L is shown having an electrical conductor 1. The conductor 1 may for example consist of copper or of aluminum or of an aluminum alloy. It can be designed as a solid conductor, but also as a stranded conductor, in which a number of existing of the conductor material wires is stranded together. The conductor 1 is surrounded by an existing plastic insulation 2. The insulated conductor is hereinafter referred to as "core A". Around the insulation 2, an electrically effective screen 3 is mounted all around, which is surrounded by a layer 4 of insulating material. The layer 4 serves as protection against contact. It can therefore be made relatively thin. The line L may also have more than one provided with a screen 3 core A.

Für die Isolierung 2 und die Schicht 4 geeignete Materialien sind beispielsweise Polyethylen, Polypropylen, Polyvinylchlorid und Polyurethan. Die Schicht 4 kann, wie schon erwähnt, dünn sein. Ihre Dicke wird materialabhängig nach Maßgabe ihrer Abriebfestigkeit eingestellt.For the insulation 2 and the layer 4 suitable materials include polyethylene, polypropylene, polyvinyl chloride and polyurethane. The layer 4 may, as already mentioned, be thin. Their thickness is adjusted depending on the material according to their abrasion resistance.

Der Schirm 3 besteht aus Carbon, mit den im Vorangehenden beschriebenen elektrischen Eigenschaften. Das Carbon liegt beispielsweise in Form von Fasern oder Fäden vor, die mit Vorteil beispielsweise mittels einer handelsüblichen Flechtmaschine als Geflecht oder in anderer Ausführungsform als Umseilung um die Isolierung 2 der Ader A herumgeformt werden können. Es ist auch möglich, aus dem Carbon zunächst ein Band zu formen, das um die Isolierung 2 der Ader A lückenlos oder auch mit Überlappung herumgewickelt werden kann.The screen 3 is made of carbon, with the electrical properties described in the foregoing. The carbon is present for example in the form of fibers or filaments, which advantageously with for example by means of a commercially available braiding machine as a braid or in another embodiment as Umseilung to the insulation 2 of Core A can be formed around. It is also possible to first form a band from the carbon, which can be wrapped around the insulation 2 of the wire A gapless or even with overlap.

In einer weiteren Variante kann das Carbon auch als Schlauch vorgeformt werden, in welchen die Ader A eingezogen bzw. hineingeschoben wird. Ein solcher Schlauch kann anschließend durch Zugbelastung bis zur Anlage an der Isolierung 2 der Ader A herunter gezogen werden. Er kann abschließend beispielsweise durch das Auftragen von Epoxidharz oder Polyesterharz verfestigt werden. Die Schicht 4 kann in allen geschilderten Ausführungsbeispielen nach Fertigstellung des Schirms 3 beispielsweise mittels eines Extruders auf denselben aufgebracht werden.In a further variant, the carbon can also be preformed as a tube, in which the wire A is pulled or pushed. Such a hose can then be pulled down by tensile load until it touches the insulation 2 of the wire A. It can finally be solidified, for example, by the application of epoxy resin or polyester resin. The layer 4 can be applied to the same in all described embodiments after completion of the screen 3, for example by means of an extruder.

Die Isolierung 2 der Ader A besteht gemäß Fig. 2 aus einem aufgeschäumten Kunststoff, beispielsweise aus Polyethylen, das in bekannter Technik chemisch aufgeschäumt werden kann.The insulation 2 of the wire A consists according to Fig. 2 from a foamed plastic, for example made of polyethylene, which can be chemically foamed in a known technique.

Wenn eine Leitung L in dem Kraftfahrzeug beispielsweise an Masse angeschlossen werden soll, dann braucht an einer entsprechenden Stelle im Verlauf der Leitung L, die gezielt vorgegeben werden kann, nur die über dem Schirm 3 einer Ader A liegende Schicht 4 entfernt zu werden. Der Schirm 3 liegt dann an dieser Stelle frei. Er kann danach entsprechend der schematischen Darstellung in Fig. 3 mittels eines elektrisch leitenden Klebers 5 an ein Bauteil 6 des Kraftfahrzeugs angeklebt werden, mit Vorteil an die Karosserie desselben.If a line L in the motor vehicle, for example, to be connected to ground, then needs to be removed at a corresponding point in the course of the line L, which can be specified, only the lying on the screen 3 of a wire A layer 4. The screen 3 is then available at this point. He can then according to the schematic representation in Fig. 3 are glued to a component 6 of the motor vehicle by means of an electrically conductive adhesive 5, with advantage to the body thereof.

Claims (2)

  1. An assembly with at least one electrical lead, which has at least one electrical conductor (1) surrounded by an insulation (2), in which an electrically effective screen (3) consisting of a plastic containing carbon fiber is applied over the insulation (2) of the conductor (1), which screen is surrounded by a layer (4) made of insulation material, and which is used for an electrically conductive connection for a vehicle characterized in
    - that the insulation (2) of the conductor (1) consists of a foamed plastic and
    - that the screen (3) is exposed within a motor vehicle at at least one predetermined point by removal of the layer (4) made of insulation material and can be connected by means of an electrically conductive adhesive (5) to a component (6) of the motor vehicle, preferably with the body of the same.
  2. An assembly according to Claim 1, characterized in that the conductor of the lead consists of aluminum or an aluminum alloy.
EP13305506.1A 2013-04-18 2013-04-18 Assembly with at least one electrical lead Active EP2793239B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13305506.1A EP2793239B1 (en) 2013-04-18 2013-04-18 Assembly with at least one electrical lead

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13305506.1A EP2793239B1 (en) 2013-04-18 2013-04-18 Assembly with at least one electrical lead

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EP2793239A1 EP2793239A1 (en) 2014-10-22
EP2793239B1 true EP2793239B1 (en) 2018-03-21

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EP13305506.1A Active EP2793239B1 (en) 2013-04-18 2013-04-18 Assembly with at least one electrical lead

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105529091A (en) * 2016-01-23 2016-04-27 安徽瑞昊缆业有限公司 Industrial fireproof cable
EP3613639B1 (en) * 2018-08-20 2023-02-01 Nexans Harness element with at least partially stable electric panel element and method for its production

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
US4960965A (en) * 1988-11-18 1990-10-02 Redmon Daniel W Coaxial cable with composite outer conductor
DE19907675A1 (en) * 1999-02-23 2000-09-14 Kreitmair Steck Wolfgang Cable shield made of fiber composite materials with a high proportion of electrically conductive fibers for electromagnetic shielding
JP5895318B2 (en) * 2011-09-27 2016-03-30 矢崎総業株式会社 Wire harness
CN102708966A (en) * 2012-06-15 2012-10-03 昆山翰辉电子科技有限公司 Coaxial electric wire

Non-Patent Citations (1)

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

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