EP0442990A1 - Electric cable with traction-resistant element. - Google Patents

Electric cable with traction-resistant element.

Info

Publication number
EP0442990A1
EP0442990A1 EP90912765A EP90912765A EP0442990A1 EP 0442990 A1 EP0442990 A1 EP 0442990A1 EP 90912765 A EP90912765 A EP 90912765A EP 90912765 A EP90912765 A EP 90912765A EP 0442990 A1 EP0442990 A1 EP 0442990A1
Authority
EP
European Patent Office
Prior art keywords
bundle
wires
line according
carbon fiber
stranded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90912765A
Other languages
German (de)
French (fr)
Other versions
EP0442990B1 (en
Inventor
Wolfgang Diegmann
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.)
Delphi Automotive Systems Deutschland GmbH
Original Assignee
Kabelwerke Reinshagen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Kabelwerke Reinshagen GmbH filed Critical Kabelwerke Reinshagen GmbH
Priority to AT90912765T priority Critical patent/ATE97762T1/en
Publication of EP0442990A1 publication Critical patent/EP0442990A1/en
Application granted granted Critical
Publication of EP0442990B1 publication Critical patent/EP0442990B1/en
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Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
    • H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/147—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising electric conductors or elements for information transfer
    • 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
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2055—Cores characterised by their structure comprising filaments or fibers
    • D07B2201/2056—Cores characterised by their structure comprising filaments or fibers arranged parallel to the axis
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2055—Cores characterised by their structure comprising filaments or fibers
    • D07B2201/2057—Cores characterised by their structure comprising filaments or fibers resulting in a twisted structure
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2067—Cores characterised by the elongation or tension behaviour
    • D07B2201/2068—Cores characterised by the elongation or tension behaviour having a load bearing function
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/30—Inorganic materials
    • D07B2205/3007—Carbon

Definitions

  • the invention relates to an electrical line with insulation, with a multi-wire conductor made of metal formed into a strand or a rope and with a tension-resistant, fibrous element arranged centrally in the conductor.
  • DE-25 19 687-A 1 shows a method for producing a stranded conductor for electrical mains connection lines and the like, in which a thin thread of glass thread is stranded centrally when the individual wires are stranded.
  • the line conductors consist of approximately 30 to 60 individual conductors which are choked together.
  • the centrally inserted glass thread increases the tensile strength of the strands in particular without appreciably increasing their cross-section, since it is embedded in the cavities (gusset) between the individual conductors when stranded.
  • the invention has for its object to provide an electrical line that can withstand an extreme tensile load with a small cross section, is easy to manufacture and can be further processed. Furthermore, if desired, it should be able to be designed to be longitudinally watertight in a simple and permanent manner.
  • the fibrous element is formed from a bundle of carbon fiber filaments (carbon fibers).
  • Advantageous embodiments of the invention are characterized in the other claims. If the bundle is divided into at least 800, but depending on the design, also 1,000 to 12,000 individual filaments with a diameter of max.
  • the carbon fiber can optimally distribute 0.007 millimeters in the inner gusset and fill all cavities. The highest tensile forces are absorbed when the bundle shows no rotation.
  • the carbon fiber filament can be formed into a yarn with a twist of up to about 60 d / m (twists per meter).
  • the bundle can be treated with a size, e.g. B.
  • the conductor is constructed from an annular layer of at least 6 individual wires or the like, which surround the bundle with radial pressure, so that the inner gusset is completely filled with the individual filaments of the bundle. Additional wires or other line components can also be applied over the layer of individual wires. If the demands on the line are increased, the bundle can be filled with a liquid, pasty or powdery material. Such a filler greatly reduces the friction between the individual filaments and therefore has a positive effect on the flexibility of the line and on the durability of the filaments in the event of bending loads.
  • Fillers can be used, which also provide a longitudinal sealing of the line by forming a barrier to the liquid when water or any other liquid enters through swelling, foaming or another reaction.
  • Such fillers are based on petroleum jelly, petro jelly, silicones, cellulose and other materials.
  • a method for producing a line according to the invention provides that at least one layer of wires is stranded or stranded around a central bundle of carbon fiber filaments, that these wires lie tightly around the bundle and that insulation is arranged around the wires. Additional wire layers or other line components, e.g. B. for reinforcement, shielding and the like.
  • the method steps according to claim 9 are provided for producing a filled line.
  • the bundle can be filled according to claim 10. If further line elements are introduced, they would either have to be free of voids or should also be provided with an appropriate filling compound. It is recommended that the bundle is passed through a filling device immediately before the (first) layer of wires is applied, in which the bundle is soaked with the filler.
  • the invention creates an electrical line that can be made extremely thin or withstands extreme tensile loads. It can be produced economically, can be further processed without problems and can be designed to be longitudinally watertight and resistant to bending. Further advantages result from the example description below.
  • Figure 1 shows a conventional electrical line in cross section.
  • Figure 2 shows an electrical line according to the invention in cross section.
  • Figure 3 shows a section of the central, fibrous element with 3 individual filaments.
  • an electrical line 1 which consists of a stranded copper strand 2 with the structure 1 + 6 + 12 wires 3 with a diameter of 0.18 mm and an insulation 4 made of polyvinyl chloride.
  • the diameter of the line is 1.5 mm and its cross-sectional area is 1.77
  • FIG. 2 shows an electrical line 10, which consists of a central carbon fiber bundle 11 with a diameter of approximately 0.2 mm, which consists of approximately 1,000 individual filaments 12 with a diameter of approximately 7,000ths of a millimeter.
  • the individual filaments 12 have a size 13 based on polymer, which allows the individual filaments 12 to adhere to one another, and about 7 d / m (rotations per m).
  • the bundle 11 is surrounded by a layer 14 made of six copper wires 15.
  • the copper wires 15 have a diameter of about 0.2 mm, so that a conductor cross-section
  • the layer 14 of the copper wires 12 is insulated
  • Tear strength is 120 Newtons.
  • the new line accordingly shows a reduction in the diameter by 21% and the cross-sectional area by 38% with approximately the same tear strength. These are values which represent a significant advantage in special applications in which space or weight savings are important.
  • the new line can be processed without any problems since the central carbon fiber does not interfere. Cutting, stripping, crimping, welding and soldering are still possible without impairment, so that this line is particularly suitable for the production of all types of cable sets.
  • the six copper wires 15 and the carbon fiber bundle 11 are fed to a stranding device. Before the stranding point, the bundle 11 is filled and coated with a filling compound 16 in a stuffing device. In the stranding device, the wires 15 are stranded around the centrally entering bundle 11. The lay length is approx. 15 mm.
  • the individual filaments 12 of the bundle 11 are pressed together radially by the wires 15, so that all inner gussets or the entire space enclosed by the wires 15 are bundled by the bundle 11, ie by the individual filaments 12 and the filler 16 is filled out.
  • the resulting rope structure is then passed through an extruder and coated with plastic insulation 17 such as PVC under radial pressure.
  • the insulating material fills all outer gussets 18 without any cavities.
  • the exemplary embodiment described shows only a simple application of the invention.
  • the invention is also applicable to multi-core, round or flat cables which can serve a wide variety of purposes, e.g. B. for energy or message transmission, for control or measurement purposes.

Landscapes

  • Insulated Conductors (AREA)
  • Ropes Or Cables (AREA)
  • Non-Insulated Conductors (AREA)
  • Conductive Materials (AREA)

Abstract

Pour permettre de réduire au minimum la surface de section ou le diamètre d'un conducteur électrique sollicitable en traction, il est proposé un élément central fibreux constitué d'un faisceau de fibres de carbone (11). Cette forme d'execution se réalise dans une version à étanchéité longitudinale à l'eau et se met en oeuvre sans problème par exemple sur des faisceaux de câbles.In order to make it possible to minimize the cross-sectional area or the diameter of an electrical conductor which can be stressed in tension, a central fibrous element is provided consisting of a bundle of carbon fibers (11). This embodiment is produced in a version with longitudinal watertightness and can be implemented without problem, for example on bundles of cables.

Description

A A
Elektrische Leitung mit zugfestem Element,Electrical cable with tensile element,
Die Erfindung betrifft eine elektrische Leitung mit einer Isolierung, mit einem mehrdrähtigen, zu einer Litze oder einem Seil geformten Leiter aus Metall und mit einem zen¬ tral im Leiter angeordneten, zugfesten, faserför igen Ele¬ ment.The invention relates to an electrical line with insulation, with a multi-wire conductor made of metal formed into a strand or a rope and with a tension-resistant, fibrous element arranged centrally in the conductor.
Elektrische Leitungen der vorgenannten Art sind bekannt. So zeigt die DE-25 19 687-A 1 ein Verfahren zur Herstel¬ lung eines Litzenleiter für elektrische Netzanschlußlei¬ tungen und dergleichen, bei dem beim Verseilen der Einzel¬ drähte zentral ein dünner Faden aus Glasseidenzwirn mit verlitzt wird. Bei derartigen Leitungen bestehen die Lit¬ zenleiter aus etwa 30 bis 60 Einzelleitern, die miteinan¬ der verwürgt werden. Der zentral eingeführte Glasfaden er¬ höht insbesondere die Zugfestigkeit der Litzen, ohne ihren Querschnitt merklich zu vergrößern, da er beim Verlitzen in die Hohlräume (Zwickel) zwischen den Einzelleitern ein¬ gebettet wird.Electrical lines of the aforementioned type are known. For example, DE-25 19 687-A 1 shows a method for producing a stranded conductor for electrical mains connection lines and the like, in which a thin thread of glass thread is stranded centrally when the individual wires are stranded. In the case of such lines, the line conductors consist of approximately 30 to 60 individual conductors which are choked together. The centrally inserted glass thread increases the tensile strength of the strands in particular without appreciably increasing their cross-section, since it is embedded in the cavities (gusset) between the individual conductors when stranded.
Ein solcher zentraler Glasfaden läßt sich bei der Verar¬ beitung auf Schneidemaschinen sehr leicht herausziehen und führt dann zu Störungen im Arbeitsablauf. Des weiteren ist die Einbettung zwischen vielen Einzelleitern nicht von Dauer, wenn die fertige Leitung beim Gebrauch oft gebogen wird. Dann kann der mitverwürgte Glasfaden leicht aus dem Litzenverband austreten und zerbrechen. Der Erfindung liegt die Aufgabe zugrunde, eine elektrische Leitung zu schaffen, die bei kleinem Querschnitt einer ex¬ tremen Zugbelastung standhält, leicht herzustellen und weiterzuverarbeiten ist. Des weiteren soll sie - falls gewünscht - in einfacher und dauerhafter Weise längswas¬ serdicht ausgebildet werden können.Such a central glass thread can be pulled out very easily during processing on cutting machines and then leads to malfunctions in the workflow. Furthermore, the embedding between many individual conductors is not permanent if the finished line is often bent during use. Then the co-entangled glass thread can easily emerge from the strand strand and break. The invention has for its object to provide an electrical line that can withstand an extreme tensile load with a small cross section, is easy to manufacture and can be further processed. Furthermore, if desired, it should be able to be designed to be longitudinally watertight in a simple and permanent manner.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das faserför ige Element aus einem Bündel von Karbonfasern-Fi- lamenten (Kohlenstoff-Fasern) gebildet ist. Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprü¬ chen gekennzeichnet. Bei einer Aufteilung des Bündels in mindestens 800, je nach Ausführungsfall aber auch 1 000 bis 12 000 Einzelfilamenten mit einem Durchmesser von max. 0,007 Millimeter kann sich die Karbonfaser optimal im Innenzwickel verteilen und alle Hohlräume ausfüllen. Höchste Zugkräfte werden aufgenommen, wenn das Bündel keinerlei Drehung aufweist. Zur besseren Verarbeitbarkeit des Bündels können die Karbonfaserfila ente zu einem Garn mit einer Drehung bis zu etwa 60 d/m (Drehungen pro Meter) geformt sein. Zum gleichen Zweck kann das Bündel mit einer Schlichte, z. B. auf Polymer-Basis, versehen sein, welche die Einzelfilermente zusammenhält, insbesondere an ihren Berührungspunkten oder -linien miteinander verklebt. Eine solche Schlichte kann schon vom Hersteller des Bündels aufgebracht sein. In einfachster Ausführung ist der Leiter aus einer ringförmigen Lage aus mindestens 6 Einzeldrähten oder dergleichen aufgebaut, die das Bündel mit radialem Druck umschließen, so daß der Innenzwickel vollkommen von den Einzelfilamenten des Bündels ausgefüllt ist. über der Lage aus Einzeldrähten können auch weitere Drähte oder andere Leitungsbauelemente aufgebracht sein. Bei er¬ höhten Anforderungen an die Leitung kann das Bündel mit einem flüssigen, pastenförmigen oder pulverigen Material gefüllt sein. Ein derartiges Füllmittel vermindert stark die Reibung zwischen den einzelnen Filamenten, wirkt sich demnach positiv auf die Flexibilität der Leitung und auf die Haltbarkeit der Filamente bei Biegebelastungen aus. Es können dabei Füllmittel verwendet werden, die zudem eine Längsabdichtung der Leitung bewirken, indem sie bei Zutritt von Wasser oder einer anderen beliebigen Flüssig¬ keit durch Quellen, Schäumen oder eine andere Reaktion eine Sperre für die Flüssigkeit bilden. Derartige Füllmit¬ tel gibt es auf der Basis von Vaseline, Petrojelly, Sili¬ kone, Zellulose und anderen Materialien. Ein Verfahren zur Herstellung einer Leitung nach der Erfindung sieht vor, daß mindestens eine Lage von Drähten um ein zentrales Bün¬ del aus Karbonfaserfilamenten verlitzt oder verseilt wird, daß diese Drähte eng um das Bündel anliegen und das eine Isolierung um die Drähte angeordnet wird. Dabei kön- nen zwischen der Drahtlage und der Isolierung noch weitere Drahtlagen oder andere Leitungsbauelemente, z. B. zur Be¬ wehrung, Abschirmung und dergleichen, eingebracht werden.This object is achieved in that the fibrous element is formed from a bundle of carbon fiber filaments (carbon fibers). Advantageous embodiments of the invention are characterized in the other claims. If the bundle is divided into at least 800, but depending on the design, also 1,000 to 12,000 individual filaments with a diameter of max. The carbon fiber can optimally distribute 0.007 millimeters in the inner gusset and fill all cavities. The highest tensile forces are absorbed when the bundle shows no rotation. For better processability of the bundle, the carbon fiber filament can be formed into a yarn with a twist of up to about 60 d / m (twists per meter). For the same purpose, the bundle can be treated with a size, e.g. B. on a polymer basis, which holds the individual filter elements together, in particular glued to one another at their contact points or lines. Such a size can already be applied by the manufacturer of the bundle. In the simplest version, the conductor is constructed from an annular layer of at least 6 individual wires or the like, which surround the bundle with radial pressure, so that the inner gusset is completely filled with the individual filaments of the bundle. Additional wires or other line components can also be applied over the layer of individual wires. If the demands on the line are increased, the bundle can be filled with a liquid, pasty or powdery material. Such a filler greatly reduces the friction between the individual filaments and therefore has a positive effect on the flexibility of the line and on the durability of the filaments in the event of bending loads. Fillers can be used, which also provide a longitudinal sealing of the line by forming a barrier to the liquid when water or any other liquid enters through swelling, foaming or another reaction. Such fillers are based on petroleum jelly, petro jelly, silicones, cellulose and other materials. A method for producing a line according to the invention provides that at least one layer of wires is stranded or stranded around a central bundle of carbon fiber filaments, that these wires lie tightly around the bundle and that insulation is arranged around the wires. Additional wire layers or other line components, e.g. B. for reinforcement, shielding and the like.
Zur Herstellung einer gefüllten Leitung werden die Verfah¬ rensschritte nach Patentanspruch 9 vorgesehen. Dabei kann die Füllung des Bündels nach Patentanspruch 10 erfolgen. Falls weitere Leitungselemente eingebracht werden, müßten diese entweder hohlraumfrei sein oder ebenfalls mit einer entsprechenden Füllmasse versehen werden. Dabei empfiehlt es sich, daß das Bündel unmittelbar vor dem Aufbringen der (ersten) Lage von Drähten durch eine Füllvorrichtung geführt wird, in der das Bündel mit dem Füllmittel getränkt wird.The method steps according to claim 9 are provided for producing a filled line. The bundle can be filled according to claim 10. If further line elements are introduced, they would either have to be free of voids or should also be provided with an appropriate filling compound. It is recommended that the bundle is passed through a filling device immediately before the (first) layer of wires is applied, in which the bundle is soaked with the filler.
Die Erfindung schafft eine elektrische Leitung, die extrem dünn ausgebildet werden kann, bzw. extremen Zugbelastungen standhält. Sie ist wirtschaftlich herstellbar, störungslos weiterzubearbeiten und kann längswasserdicht und biegefest ausgebildet werden. Weitere Vorteile ergeben sich aus der nachfolgenden Beispielsbeschreibung.The invention creates an electrical line that can be made extremely thin or withstands extreme tensile loads. It can be produced economically, can be further processed without problems and can be designed to be longitudinally watertight and resistant to bending. Further advantages result from the example description below.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, das im nachfolgenden näher beschrieben wird. Dabei wird die erfindungsgemäße Leitung mit einer herkömm¬ lichen Leitung mit gleicher Zugfestigkeit verglichen.In the drawing, an embodiment of the invention is shown, which is described in more detail below. The line according to the invention is compared with a conventional line with the same tensile strength.
Figur 1 zeigt eine herkömmliche elektrische Leitung im Querschnitt.Figure 1 shows a conventional electrical line in cross section.
Figur 2 zeigt eine erfindungsgemäße elektrische Leitung im Querschnitt.Figure 2 shows an electrical line according to the invention in cross section.
Figur 3 zeigt einen Ausschnitt aus dem zentralen, faser- för igen Element mit 3 Einzelfilamenten.Figure 3 shows a section of the central, fibrous element with 3 individual filaments.
In Figur 1 ist eine elektrische Leitung 1 gezeigt, die aus einer verseilten Kupferlitze 2 mit dem Aufbau 1 + 6 + 12 Drähten 3 mit dem Durchmesser 0,18 mm und einer Isolierung 4 aus Polyvinylchlorid besteht. Der Durchmesser der Lei¬ tung beträgt 1,5 mm, deren Querschnittsfläche ist 1,77In Figure 1, an electrical line 1 is shown, which consists of a stranded copper strand 2 with the structure 1 + 6 + 12 wires 3 with a diameter of 0.18 mm and an insulation 4 made of polyvinyl chloride. The diameter of the line is 1.5 mm and its cross-sectional area is 1.77
2 2 mm . Die Leiterguerschnittsflache beträgt 0,5 mm , die Reißkraft beträgt ca. 130 Newton. Es gibt Anwendungs älle, bei denen ein solcher Leiterquer- schnitt lediglich aus Gründen der Zugbeanspruchung und/oder der Flexibilität gewählt wurde. Für die elektri¬ sche Übertragung würde ein viel geringerer Leiterquer¬ schnitt ausreichen.2 2 mm. The conductor cross-sectional area is 0.5 mm, the tear strength is approx. 130 Newtons. There are applications in which such a conductor cross-section was chosen only for reasons of tensile stress and / or flexibility. A much smaller conductor cross section would be sufficient for the electrical transmission.
Figur 2 zeigt eine elektrische Leitung 10, die aus einem zentralen Karbonfaserbundel 11 mit ca. 0,2 mm Durchmesser, das aus ca. 1 000 Einzelfilamenten 12 mit einem Durchmes¬ ser von ca. 7 OOOstel Millimeter besteht. Die Einzelfila- mente 12 weisen eine Schlichte 13 auf Polymerbasis auf, welche die Einzelfilamente 12 aneinander haften läßt, sowie ca. 7 d/m (Drehungen pro m) auf.FIG. 2 shows an electrical line 10, which consists of a central carbon fiber bundle 11 with a diameter of approximately 0.2 mm, which consists of approximately 1,000 individual filaments 12 with a diameter of approximately 7,000ths of a millimeter. The individual filaments 12 have a size 13 based on polymer, which allows the individual filaments 12 to adhere to one another, and about 7 d / m (rotations per m).
Das Bündel 11 ist von einer Lage 14 aus sechs Kupferdräh¬ ten 15 umgeben. Die Kupferdrähte 15 haben einen Durchmes¬ ser von ca. 0.2 mm, so daß sich eine Leiterquerschnitts-The bundle 11 is surrounded by a layer 14 made of six copper wires 15. The copper wires 15 have a diameter of about 0.2 mm, so that a conductor cross-section
2 fläche von ca. 0,2 mm ergibt. Alle Hohlräume inner¬ halb der Lage 14 der Drähte 15 und zwischen den Einzelfi- lamenten 13 des Bündels 11 sind von einem Füllmittel 16 auf der Basis von Vaseline ausgefüllt.2 area of approx. 0.2 mm results. All cavities within the layer 14 of the wires 15 and between the individual filaments 13 of the bundle 11 are filled with a filler 16 based on petroleum jelly.
Die Lage 14 der Kupferdrähte 12 ist von einer IsolierungThe layer 14 of the copper wires 12 is insulated
17 aus Polyvinylchlorid umgeben, welche die Außenzwickel17 surrounded by polyvinyl chloride, which the outer gusset
18 vollkommen ausfüllt. Der Durchmesser der Leitung 10 be-18 completely filled out. The diameter of the line 10 is
2 trägt 1,19 mm, deren Querschnittsfläche 1,11 mm . Die 2 carries 1.19 mm, its cross-sectional area 1.11 mm. The
Reißkraft beträgt 120 Newton. Die neue Leitung zeigt demnach bei etwa gleicher Reißkraft eine Verminderung des Durchmessers um 21 % und der Quer¬ schnittsfläche um 38 %. Dieses sind Werte, die bei spe¬ ziellen Anwendungsfällen, bei denen es auf Raum- oder Ge¬ wichtseinsparung ankommt, einen bedeutenden Vorteil dar¬ stellen. Die neue Leitung läßt sich problemlos weiterver¬ arbeiten, da die zentrale Karbonfaser nicht stört. Schnei¬ den, Abisolieren, Crimpen, Schweißen und Löten sind wei¬ terhin ohne Beeinträchtigung möglich, so daß diese Leitung besonders für die Herstellung von Kabelsätzen jeder Art geeignet ist.Tear strength is 120 Newtons. The new line accordingly shows a reduction in the diameter by 21% and the cross-sectional area by 38% with approximately the same tear strength. These are values which represent a significant advantage in special applications in which space or weight savings are important. The new line can be processed without any problems since the central carbon fiber does not interfere. Cutting, stripping, crimping, welding and soldering are still possible without impairment, so that this line is particularly suitable for the production of all types of cable sets.
Zur Herstellung der Leitung 10 werden die sechs Kupfer¬ drähte 15 und das Karbonfaserbundel 11 einer Verseilvor¬ richtung zugeführt. Vor dem Verseilpunkt wird das Bündel 11 in einer Stopfvorrichtung mit einer Füllmasse 16 ge¬ füllt und beschichtet. In der Verseilvorrichtung werden die Drähte 15 um das zentral einlaufende Bündel 11 ver¬ seilt. Die Schlaglänge beträgt ca. 15 mm. Dabei werden die Einzelfila ente 12 des Bündels 11 von den Drähten 15 ra¬ dial zusammengedrückt, so daß alle Innenzwickel bzw. der ganze von den Drähten 15 eingeschlossene Raum von dem Bün¬ del 11, d. h. von den Einzelfilamenten 12 und dem Füll¬ mittel 16 ausgefüllt ist. Danach wird das erzeugte Ver¬ seilgebilde durch einen Extruder geführt und unter ra¬ dialem Druck mit einer Kunststoffisolierung 17. wie PVC beschichtet. Dabei füllt das Isoliermaterial alle Außen¬ zwickel 18 hohlraumfrei aus. Das beschriebene Ausführungsbeispiel zeigt nur einen ein¬ fachen Anwendungsfall der Erfindung. Die Erfindung ist auch anwendbar bei mehradrigen, runden oder flachen Lei¬ tungen, die unterschiedlichsten Zwecken dienen können, z. B. zur Energie- oder Nachrichtenübertragung, zu Steuer¬ oder Meßzwecken.To produce the line 10, the six copper wires 15 and the carbon fiber bundle 11 are fed to a stranding device. Before the stranding point, the bundle 11 is filled and coated with a filling compound 16 in a stuffing device. In the stranding device, the wires 15 are stranded around the centrally entering bundle 11. The lay length is approx. 15 mm. The individual filaments 12 of the bundle 11 are pressed together radially by the wires 15, so that all inner gussets or the entire space enclosed by the wires 15 are bundled by the bundle 11, ie by the individual filaments 12 and the filler 16 is filled out. The resulting rope structure is then passed through an extruder and coated with plastic insulation 17 such as PVC under radial pressure. The insulating material fills all outer gussets 18 without any cavities. The exemplary embodiment described shows only a simple application of the invention. The invention is also applicable to multi-core, round or flat cables which can serve a wide variety of purposes, e.g. B. for energy or message transmission, for control or measurement purposes.
Da Karbonfasern elektrisch leitfähig sind, können sich in anzuschließenden Kontaktteilen keine störenden Isolier¬ schichten ausbilden, wie dies bei anderen, nichtmetalli¬ schen Verstärkungsfasern der Fall ist. Since carbon fibers are electrically conductive, no disturbing insulating layers can form in the contact parts to be connected, as is the case with other, non-metallic reinforcing fibers.

Claims

Patentansprüche Claims
1. Elektrische Leitung (10) mit einer Isolierung (17), mit einem mehrdrähtigen, zu einer Litze oder einem Seil geformten Leiter (14) aus Metall und einem zen¬ tral im Leiter (14) angeordneten zugfesten, faserför- migen Element (11), dadurch gekennzeichnet, daß das faserförmige Element (11) aus einem Bündel von Karbon- faserfilamenten (12) (Kohlenstoffasern) gebildet ist.1. Electrical line (10) with insulation (17), with a multi-wire conductor (14) made of metal formed into a strand or a rope and a tensile, fiber-shaped element (11) arranged centrally in the conductor (14) ), characterized in that the fibrous element (11) is formed from a bundle of carbon fiber filaments (12) (carbon fibers).
2. Leitung nach Anspruch 1, dadurch gekennzeichnet, daß das Bündel (11) aus mindestens 800 Karbonfaserfila¬ menten (12) besteht, die je einen Durchmesser von 0,007 Millimeter oder weniger aufweisen.2. Line according to claim 1, characterized in that the bundle (11) consists of at least 800 carbon fiber filaments (12), each having a diameter of 0.007 millimeters or less.
3. Leitung nach Anspruch 1 oder 2, dadurch gekennzeich¬ net, daß die Karbonfaserfila ente (12) des Bündels (11) eine Drehung von 0 bis 20 Drehungen pro Meter aufweisen.3. Line according to claim 1 or 2, characterized gekennzeich¬ net that the carbon fiber file duck (12) of the bundle (11) have a rotation of 0 to 20 turns per meter.
4. Leitung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Bündel (11) mit einer Schlichte (13) versehen ist, welche die Einzel- filamente (12) zusammenhält.4. Line according to one of claims 1 to 3, characterized in that the bundle (11) is provided with a size (13) which holds the individual filaments (12) together.
5. Leitung nach einem der Ansprüche 1 bis 4, dadurch ge¬ kennzeichnet, daß der Leiter (14) eine ringförmige La¬ ge aus mindestens sechs Einzeldrähten (15), -litzen oder -seilen aufweist, die das Bündel (11) ringsum mit radialem Druck umschließen.5. Line according to one of claims 1 to 4, characterized ge indicates that the conductor (14) has an annular layer of at least six individual wires (15), strands or ropes, which the bundle (11) with all around enclose radial pressure.
6. Leitung nach einem der Ansprüche 1 bis 5, dadurch ge¬ kennzeichnet, daß das Bündel (11) mit einem flüssigen, pastenförmigen oder pulverigen Material (16) gefüllt ist. 6. Line according to one of claims 1 to 5, characterized ge indicates that the bundle (11) is filled with a liquid, pasty or powdery material (16).
7. Leitung nach Anspruch 6, dadurch gekennzeichnet, daß das Füllmittel (16) bei Zutritt von Flüssigkeit durch Quellen, Schäumen oder eine andere Reaktion eine Sper¬ re bildet.7. Line according to claim 6, characterized in that the filler (16) forms a barrier upon entry of liquid by swelling, foaming or another reaction.
8. Verfahren zur Herstellung einer Leitung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß minde¬ stens eine Lage (14) von Drähten (15) so um ein zen¬ trales Bündel (11) aus Karbonfaserfilamenten (12) verlitzt oder verseilt wird, daß die inneren Drähte8. A method for producing a line according to one of claims 1 to 5, characterized in that at least one layer (14) of wires (15) so stranded or stranded around a central bundle (11) of carbon fiber filaments (12) will that the inner wires
(15) eng um das Bündel (11) anliegen, und daß eine Isolierung (17) um die Drähte (15) angeordnet wird.(15) fit tightly around the bundle (11), and that insulation (17) is arranged around the wires (15).
9. Verfahren zur Herstellung einer Leitung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß mindestens eine Lage (14) von Drähten (15) so um ein mit Füllmittel9. A method for producing a line according to claim 6 or 7, characterized in that at least one layer (14) of wires (15) so with a filler
(16) versehenes Bündel (11) aus Karbonfaserfilamenten (12) verlitzt oder verseilt wird, daß die inneren Drähte (15) eng an dem Bündel (11) anliegen, und daß eine Isolierung (17) unter radialem Druck so um die Drähte aufgebracht wird, daß alle Außenzwickel (18) der Drähte (15) ausgefüllt sind.(16) provided bundle (11) of carbon fiber filaments (12) is stranded or stranded in such a way that the inner wires (15) lie closely against the bundle (11) and that insulation (17) is applied around the wires under radial pressure that all outer gussets (18) of the wires (15) are filled.
10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß das Bündel (11) unmittelbar vor dem Aufbringen der inneren Drähte (15) durch eine Füllvorrichtung geführt wird, in der das Bündel (11) mit dem Füllmittel (16) getränkt und beschichtet wird. 10. The method according to claim 9, characterized in that the bundle (11) is passed immediately before the application of the inner wires (15) through a filling device in which the bundle (11) with the filler (16) is soaked and coated.
EP90912765A 1989-09-12 1990-09-07 Electric cable with traction-resistant element Revoked EP0442990B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90912765T ATE97762T1 (en) 1989-09-12 1990-09-07 ELECTRICAL CABLE WITH STRONG ELEMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3930496 1989-09-12
DE3930496A DE3930496A1 (en) 1989-09-12 1989-09-12 ELECTRICAL CABLE WITH TENSILE ELEMENT

Publications (2)

Publication Number Publication Date
EP0442990A1 true EP0442990A1 (en) 1991-08-28
EP0442990B1 EP0442990B1 (en) 1993-11-24

Family

ID=6389290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90912765A Revoked EP0442990B1 (en) 1989-09-12 1990-09-07 Electric cable with traction-resistant element

Country Status (5)

Country Link
US (1) US5159157A (en)
EP (1) EP0442990B1 (en)
DE (2) DE3930496A1 (en)
ES (1) ES2049042T3 (en)
WO (1) WO1991004563A1 (en)

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Also Published As

Publication number Publication date
WO1991004563A1 (en) 1991-04-04
ES2049042T3 (en) 1994-04-01
US5159157A (en) 1992-10-27
DE59003626D1 (en) 1994-01-05
EP0442990B1 (en) 1993-11-24
DE3930496A1 (en) 1991-03-21
DE3930496C2 (en) 1991-06-20

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