EP0442990B1 - Electric cable with traction-resistant element - Google Patents
Electric cable with traction-resistant element Download PDFInfo
- Publication number
- EP0442990B1 EP0442990B1 EP90912765A EP90912765A EP0442990B1 EP 0442990 B1 EP0442990 B1 EP 0442990B1 EP 90912765 A EP90912765 A EP 90912765A EP 90912765 A EP90912765 A EP 90912765A EP 0442990 B1 EP0442990 B1 EP 0442990B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bundle
- wires
- line
- accordance
- carbon fibre
- 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.)
- Revoked
Links
Images
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 tensile, 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 silk thread is stranded centrally when the individual wires are stranded.
- the stranded conductors consist of approximately 30 to 60 individual conductors which are choked together.
- the centrally inserted glass thread in particular increases the tensile strength of the strands without significantly increasing their cross-section, since it is embedded in the cavities (gusset) between the individual conductors when stranded.
- an electrical line according to the preamble of claim 1 is known. It comprises insulation with a multi-wire metal conductor formed into a strand or a rope, and a tensile, fibrous support element formed centrally in the conductor from a bundle of carbon fiber filaments which are firmly connected to one another with a high-molecular, crosslinked resin.
- the impregnation and firm connection with the high-molecular, cross-linked polymer resin reduce the elasticity of the support element and increase the breaking strength.
- a reduction in the flexibility of the support element and thus the electrical line must be accepted.
- the invention has for its object to provide an electrical line that withstands a small cross-section of an extreme tensile load, is easy to manufacture and process. 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) according to claim 1.
- Advantageous embodiments of the invention are characterized in the further claims.
- the carbon fiber can optimally distribute 0.007 millimeters in the inner gusset and fill all cavities. The highest tensile forces are absorbed if the bundle shows no rotation.
- the carbon fiber filaments can be formed into a yarn with a twist of up to 20 d / m (twists per meter).
- the bundle is treated with a size, e.g. B. on a polymer basis, which holds the individual filaments together, in particular glued together at their points of contact or lines. Such a size can already be applied by the manufacturer of the bundle.
- 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, silicone, 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 the inner wires lie tightly around the bundle and that insulation is arranged around the wires.
- other wire layers or other line components for. B. for reinforcement, shielding and the like.
- the method steps according to claim 6 are provided for producing a filled line.
- the bundle can be filled according to claim 7. 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.
- 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
- the cross-sectional area is 1.77 mm2.
- the conductor cross-sectional area is 0.5 mm2, the tensile strength is approx. 130 Newtons.
- 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 7,000th 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 (twists 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 approximately 0.2 mm, so that there is a conductor cross-sectional area of approximately 0.2 mm2. 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.
- the layer 14 of the copper wires 12 is surrounded by insulation 17 made of polyvinyl chloride, which completely fills the outer gusset 18.
- the diameter of the line 10 is 1.19 mm, its cross-sectional area 1.11 mm2.
- the tear strength is 120 Newtons.
- the new line therefore shows a reduction in diameter by 21% and in cross-sectional area by 38% with approximately the same tear strength. These are values that represent a significant advantage in special applications where space or weight savings are important.
- the new line can be easily processed because the central carbon fiber does not interfere. Cutting, stripping, crimping, welding and soldering are still possible without any impairment, so that this cable 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 with a filling compound 16 in a stuffing device and coated. In the stranding device, the wires 15 are stranded around the centrally incoming bundle 11. The lay length is approx. 15 mm. The individual filaments 12 of the bundle 11 are radially compressed by the wires 15, so that all inner gussets or the entire space enclosed by the wires 15 is filled by the bundle 11, ie by the individual filaments 12 and the filler 16. The stranded structure produced is then passed through an extruder and coated with a plastic insulation 17, such as PVC, under radial pressure. The insulating material fills all outer gussets 18 without voids.
- a plastic insulation 17 such as PVC
- the exemplary embodiment described shows only a simple application of the invention.
- the invention is also applicable to multi-core, round or flat cables that 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
Description
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 zentral im Leiter angeordneten, zugfesten, faserförmigen Element.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 tensile, 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 Herstellung eines Litzenleiters für elektrische Netzanschlußleitungen und dergleichen, bei dem beim Verseilen der Einzeldrähte zentral ein dünner Faden aus Glasseidenzwirn mit verlitzt wird. Bei derartigen Leitungen bestehen die Litzenleiter aus etwa 30 bis 60 Einzelleitern, die miteinander verwürgt werden. Der zentral eingeführte Glasfaden erhöht insbesondere die Zugfestigkeit der Litzen, ohne ihren Querschnitt merklich zu vergrößern, da er beim Verlitzen in die Hohlräume (Zwickel) zwischen den Einzelleitern eingebettet 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 silk thread is stranded centrally when the individual wires are stranded. In such lines, the stranded conductors consist of approximately 30 to 60 individual conductors which are choked together. The centrally inserted glass thread in particular increases the tensile strength of the strands without significantly 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 Verarbeitung 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. Darüber hinaus bilden sich beim Anschluß an Kontaktteile störende isolierende Zwischenschichten im Kontaktbereich.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. In addition, when connecting to contact parts, disturbing insulating intermediate layers are formed in the contact area.
Die DE 28 24 521 A 1 lehrt den Fachmann, bei einem Zwillings-Fernmeldekabel eine Zugentlastung aus mindestens zwei symmetrisch angeordneten Tragorganen aus hochfesten Fasern, z.B. aus Graphitfasern, anzuordnen. Der Aufbau der Verstärkungsfasern ist offengelassen.DE 28 24 521 A 1 teaches the person skilled in the art to relieve the strain on a twin telecommunication cable from at least two symmetrically arranged support members made of high-strength fibers, e.g. made of graphite fibers. The structure of the reinforcing fibers is left open.
Die DE 24 33 099 A 1 lehrt, daß hochfeste Kunststoff-Fasern von einer elastischen Hülle umgeben oder mit einem elastischen Material durchtränkt bzw. imprägniert sein können.DE 24 33 099 A 1 teaches that high-strength plastic fibers can be surrounded by an elastic covering or can be impregnated or impregnated with an elastic material.
Die DE 33 30 096 C 2 lehrt, daß ein Kabel mit insbesondere konzentrisch um den.Leiter angeordneten Zugentlastungselementen versehen ist, die mit einem Quellpulver oder dergleichen gefüllt sind. Diese Entgegenhaltung betrifft nur spezielle Ausführungen der Erfindung.DE 33 30 096
Aus der EP 0287 515 A2 ist eine elektrische Leitung nach der Präambel des Patentanspruchs 1 bekannt. Sie umfaßt eine Isolierung mit einem mehrdrähtigen, zu einer Litze oder einem Seil geformten Leiter aus Metall und ein zentral im Leiter angeformtes, zugfestes, faserförmiges Tragelement aus einem Bündel von Karbonfaserfilamenten, die mit einem hochmolekularen, vernetzten Harz fest miteinander verbunden sind. Durch die Tränkung und feste Verbindung mit dem hochmolekularen, vernetzten Polymerharz wird die Dehnbarkeit des Tragelements verringert und die Bruchkraft erhöht. Jedoch muß dabei eine Verringerung der Flexibilität des Tragelements und damit der elektrischen Leitung in Kauf genommen werden.From EP 0287 515 A2 an electrical line according to the preamble of claim 1 is known. It comprises insulation with a multi-wire metal conductor formed into a strand or a rope, and a tensile, fibrous support element formed centrally in the conductor from a bundle of carbon fiber filaments which are firmly connected to one another with a high-molecular, crosslinked resin. The impregnation and firm connection with the high-molecular, cross-linked polymer resin reduce the elasticity of the support element and increase the breaking strength. However, a reduction in the flexibility of the support element and thus the electrical line must be accepted.
Der Erfindung liegt die Aufgabe zugrunde, eine elektrische Leitung zu schaffen, die bei kleinem Querschnitt einer extremen Zugbelastung standhält, leicht herzustellen und weiterzuverarbeiten ist. Des weiteren soll sie - falls gewünscht - in einfacher und dauerhafter Weise längswas- serdicht ausgebildet werden können.The invention has for its object to provide an electrical line that withstands a small cross-section of an extreme tensile load, is easy to manufacture and process. 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 faserförmige Element aus einem Bündel von Karbonfasern-Filamenten (Kohlenstoff-Fasern) nach Patentanspruch 1 gebildet ist. Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen gekennzeichnet.This object is achieved in that the fibrous element is formed from a bundle of carbon fiber filaments (carbon fibers) according to claim 1. Advantageous embodiments of the invention are characterized in the further claims.
Bei der 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 Karbonfaserfilamente zu einem Garn mit einer Drehung bis zu 20 d/m (Drehungen pro Meter) geformt sein. Zum gleichen Zweck ist das Bündel mit einer Schlichte, z. B. auf Polymer-Basis, versehen, welche die Einzelfilamente 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.When dividing the bundle 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 if the bundle shows no rotation. For better processability of the bundle, the carbon fiber filaments can be formed into a yarn with a twist of up to 20 d / m (twists per meter). For the same purpose, the bundle is treated with a size, e.g. B. on a polymer basis, which holds the individual filaments together, in particular glued together at their points of contact 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.
Über der Lage aus Einzeldrähten können auch weitere Drähte oder andere Leitungsbauelemente aufgebracht sein. Bei erhöhten 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 Flüssigkeit durch Quellen, Schäumen oder eine andere Reaktion eine Sperre für die Flüssigkeit bilden. Derartige Füllmittel gibt es auf der Basis von Vaseline, Petrojelly, Silikone, Zellulose und anderen Materialien. Ein Verfahren zur Herstellung einer Leitung nach der Erfindung sieht vor, daß mindestens eine Lage von Drähten um ein zentrales Bündel aus Karbonfaserfilamenten verlitzt oder verseilt wird, daß die inneren Drähte eng um das Bündel anliegen und das eine Isolierung um die Drähte angeordnet wird. Dabei können zwischen der Drahtlage und der Isolierung noch weitere Drahtlagen oder andere Leitungsbauelemente, z. B. zur Bewehrung, Abschirmung und dergleichen, eingebracht werden.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, silicone, 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 the inner wires lie tightly around the bundle and that insulation is arranged around the wires. In this case, other wire layers or other line components, for. B. for reinforcement, shielding and the like.
Zur Herstellung einer gefüllten Leitung werden die Verfahrensschritte nach Patentanspruch 6 vorgesehen. Dabei kann die Füllung des Bündels nach Patentanspruch 7 erfolgen. Falls weitere Leitungselemente eingebracht werden, müßten diese entweder hohlraumfrei sein oder ebenfalls mit einer entsprechenden Füllmasse versehen werden.The method steps according to claim 6 are provided for producing a filled line. The bundle can be filled according to claim 7. 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.
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.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 herkömmlichen 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, faserförmigen 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 Leitung beträgt 1,5 mm, deren Querschnittsfläche ist 1,77 mm² . Die Leiterquerschnittsfläche beträgt 0,5 mm², die Reißkraft beträgt ca. 130 Newton.In Figure 1, an electrical line 1 is shown, which consists of a stranded
Es gibt Anwendungsfälle, bei denen ein solcher Leiterquerschnitt lediglich aus Gründen der Zugbeanspruchung und/oder der Flexibilität gewählt wurde. Für die elektrische Übertragung würde ein viel geringerer Leiterquerschnitt ausreichen.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 Karbonfaserbündel 11 mit ca. 0,2 mm Durchmesser, das aus ca. 1 000 Einzelfilamenten 12 mit einem Durchmesser von ca. 7 000stel Millimeter besteht. Die Einzelfilamente 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
Das Bündel 11 ist von einer Lage 14 aus sechs Kupferdrähten 15 umgeben. Die Kupferdrähte 15 haben einen Durchmesser von ca. 0,2 mm, so daß sich eine Leiterquerschnittsfläche von ca. 0,2 mm² ergibt. Alle Hohlräume innerhalb der Lage 14 der Drähte 15 und zwischen den Einzelfilamenten 13 des Bündels 11 sind von einem Füllmittel 16 auf der Basis von Vaseline ausgefüllt.The
Die Lage 14 der Kupferdrähte 12 ist von einer Isolierung 17 aus Polyvinylchlorid umgeben, welche die Außenzwickel 18 vollkommen ausfüllt. Der Durchmesser der Leitung 10 beträgt 1,19 mm, deren Querschnittsfläche 1,11 mm². Die Reißkraft beträgt 120 Newton.The
Die neue Leitung zeigt demnach bei etwa gleicher Reißkraft eine Verminderung des Durchmessers um 21 % und der Querschnittsfläche um 38 %. Dieses sind Werte, die bei speziellen Anwendungsfällen, bei denen es auf Raum- oder Gewichtseinsparung ankommt, einen bedeutenden Vorteil darstellen. Die neue Leitung läßt sich problemlos weiterverarbeiten, da die zentrale Karbonfaser nicht stört. Schneiden, Abisolieren, Crimpen, Schweißen und Löten sind weiterhin ohne Beeinträchtigung möglich, so daß diese Leitung besonders für die Herstellung von Kabelsätzen jeder Art geeignet ist.The new line therefore shows a reduction in diameter by 21% and in cross-sectional area by 38% with approximately the same tear strength. These are values that represent a significant advantage in special applications where space or weight savings are important. The new line can be easily processed because the central carbon fiber does not interfere. Cutting, stripping, crimping, welding and soldering are still possible without any impairment, so that this cable is particularly suitable for the production of all types of cable sets.
Zur Herstellung der Leitung 10 werden die sechs Kupferdrähte 15 und das Karbonfaserbündel 11 einer Verseilvorrichtung zugeführt. Vor dem Verseilpunkt wird das Bündel 11 in einer Stopfvorrichtung mit einer Füllmasse 16 gefüllt und beschichtet. In der Verseilvorrichtung werden die Drähte 15 um das zentral einlaufende Bündel 11 verseilt. Die Schlaglänge beträgt ca. 15 mm. Dabei werden die Einzelfilamente 12 des Bündels 11 von den Drähten 15 radial zusammengedrückt, so daß alle Innenzwickel bzw. der ganze von den Drähten 15 eingeschlossene Raum von dem Bündel 11, d. h. von den Einzelfilamenten 12 und dem Füllmittel 16 ausgefüllt ist. Danach wird das erzeugte Verseilgebilde durch einen Extruder geführt und unter radialem Druck mit einer Kunststoffisolierung 17, wie PVC, beschichtet. Dabei füllt das Isoliermaterial alle Außenzwickel 18 hohlraumfrei aus.To produce the
Das beschriebene Ausführungsbeispiel zeigt nur einen einfachen Anwendungsfall der Erfindung. Die Erfindung ist auch anwendbar bei mehradrigen, runden oder flachen Leitungen, die unterschiedlichsten Zwecken dienen können, z. B. zur Energie- oder Nachrichtenübertragung, zu Steuer- oder Meßzwecken.The exemplary embodiment described shows only a simple application of the invention. The invention is also applicable to multi-core, round or flat cables that 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 Isolierschichten ausbilden, wie dies bei anderen, nichtmetallischen 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 (7)
- An electric line (10) having insulation (17), having a multiple-wire conductor (14) made of metal and formed into a stranded wire or a cable, and having an element (11) which is arranged in the centre of the conductor (14), is tension-proof, is fibriform and is made up of a bundle of carbon fibre filaments (12) provided with a polymer which keeps the individual filaments together, the carbon fibre filaments running parallel or being twisted, characterised in thata) the bundle is composed of at least 800 carbon fibre filaments (12) each having a diameter of 0.007 millimetres or less,b) the carbon fibre filaments (12) of the bundle (11) have between 0 and 20 twists per metre andc) the polymer is a size (13).
- A line in accordance with Claim 1, the conductor (14) of this line having an annular layer of at least six individual wires (15), individual stranded wires or individual cables, characterised in that the individual wires (15) surround the bundle (11) and exert radial pressure.
- A line in accordance with Claim 1 or 2, characterised in that the bundle (11) is filled with a liquid, pasty or pulverulent material (16).
- A line in accordance with Claim 3, characterised in that upon entry of liquid the filler (16) forms a barrier by swelling, expanding or another reaction.
- A process for the manufacture of a line in accordance with Claim 1 or 2, characterised in that at least one layer (14) of wires (15) is stranded or twisted in such a manner around a central bundle (11) of carbon fibre filaments (12) that the inner wires (15) fit closely around the bundle (11), and in that insulation (17) is arranged around the wires (15).
- A process for the manufacture of a line in accordance with Claim 3 or 4, characterised in that at least one layer (14) of wires (15) is stranded or twisted in such a manner around a bundle (11) of carbon fibre filaments (12) which is provided with filler (16) that the inner wires (15) are in close contact with the bundle (11), and in that insulation (17) is applied - under radial pressure - around the wires in such a manner that all outer interstices (18) of the wires (15) are filled.
- A process in accordance with Claim 6, characterised in that the bundle (11) is - immediately before application of the inner wires (15) - fed through a filling device in which the bundle (11) is impregnated and coated with the filler (16).
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 EP0442990A1 (en) | 1991-08-28 |
| EP0442990B1 true 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) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4136227A1 (en) * | 1991-11-04 | 1993-05-06 | Kabelwerke Reinshagen Gmbh, 5600 Wuppertal, De | Electrical cable for high tensile loading - has metal conductor wires wrapped or braided around central core of highly oriented polyethylene@ fibres |
| US5313020A (en) * | 1992-05-29 | 1994-05-17 | Western Atlas International, Inc. | Electrical cable |
| US5725952A (en) * | 1992-06-09 | 1998-03-10 | Raychem Limited | Insulators |
| NL9201447A (en) * | 1992-08-12 | 1994-03-01 | Hul A J Van Den Bv | Single or multi-core electrically conductive cable, more particularly for signal transmission. |
| DE19540807C1 (en) * | 1995-11-02 | 1997-04-17 | Mayer Textilmaschf | Flexible electrical cable and electrical connection consisting of this cable |
| DE19623800A1 (en) * | 1996-01-22 | 1997-07-24 | Ruthenberg Gmbh Waermetechnik | Strip-band cable e.g. for pressbutton keys |
| US6411760B1 (en) | 1997-05-02 | 2002-06-25 | General Science & Technology Corp | Multifilament twisted and drawn tubular element and co-axial cable including the same |
| US6140587A (en) * | 1997-05-20 | 2000-10-31 | Shaw Industries, Ltd. | Twin axial electrical cable |
| JP2001101929A (en) * | 1999-09-30 | 2001-04-13 | Yazaki Corp | Flexible high strength and light weight conductor |
| US6218644B1 (en) * | 2000-02-04 | 2001-04-17 | Macher & Zorn Oeg | Multiple wire cord and multiple segment heating element for footwear/outerwear heater |
| DE10137976A1 (en) * | 2001-08-08 | 2002-11-21 | Leoni Draht Gmbh & Co Kg | Braid, especially for motor vehicle seat heating, has combination of several types of individual wires with different electrical properties for setting desired electrical characteristics |
| DE20118713U1 (en) * | 2001-11-16 | 2002-01-17 | Nexans | Flexible electrical wire |
| FR2855312A3 (en) * | 2003-05-20 | 2004-11-26 | Zs Cables | Cable with conducting wires and high-strength filaments has at least six metal wires wound individually round high-strength filaments |
| EP1678063A4 (en) * | 2003-10-22 | 2008-10-08 | Ctc Cable Corp | Aluminum conductor composite core reinforced cable and method of manufacture |
| FR2907256A1 (en) * | 2006-10-11 | 2008-04-18 | Nexans Sa | ELECTRICAL CONTROL CABLE AND METHOD OF MANUFACTURING THE SAME |
| FR2908922B1 (en) * | 2006-11-22 | 2011-04-08 | Nexans | ELECTRICAL CONTROL CABLE |
| FR2919105B1 (en) | 2007-07-20 | 2009-10-02 | Nexans Sa | ELECTRICAL CONTROL CABLE. |
| JP5322755B2 (en) * | 2009-04-23 | 2013-10-23 | 日立電線株式会社 | cable |
| BR112012017174B1 (en) * | 2009-12-23 | 2019-05-21 | Prysmian S.P.A. | ELECTRIC CABLE, CABLE RESISTANT TO DEGRADATION BY EXTERNAL CHEMICALS, AND METHOD FOR MANUFACTURING AN ELECTRIC CABLE |
| CA2832823C (en) | 2011-04-12 | 2020-06-02 | Ticona Llc | Composite core for electrical transmission cables |
| DK2697800T3 (en) | 2011-04-12 | 2017-02-27 | Southwire Co Llc | Electric transmission cables with composite cores |
| US9140438B2 (en) | 2013-09-13 | 2015-09-22 | Willis Electric Co., Ltd. | Decorative lighting with reinforced wiring |
| JP2015222627A (en) * | 2014-05-22 | 2015-12-10 | 日立金属株式会社 | Electric wire, harness, electric circuit, fabric, clothing and sheet |
| JP2015222626A (en) * | 2014-05-22 | 2015-12-10 | 日立金属株式会社 | Shielded wire, harness, electric surface, fabric, clothing and sheet |
| CA2946387A1 (en) | 2015-10-26 | 2017-04-26 | Willis Electric Co., Ltd. | Tangle-resistant decorative lighting assembly |
| US10522270B2 (en) | 2015-12-30 | 2019-12-31 | Polygroup Macau Limited (Bvi) | Reinforced electric wire and methods of making the same |
| US20220195799A1 (en) * | 2020-12-22 | 2022-06-23 | Ashot Aroian | Reflective Rope Ladder |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2325549A (en) * | 1941-05-24 | 1943-07-27 | Okonite Co | Ignition cable |
| US2507508A (en) * | 1944-11-11 | 1950-05-16 | Myron A Elliott | Water sealing cable construction |
| GB838494A (en) * | 1955-07-21 | 1960-06-22 | James Ritchie | Improvements relating to electric conductors |
| US3717720A (en) * | 1971-03-22 | 1973-02-20 | Norfin | Electrical transmission cable system |
| NL7117321A (en) * | 1971-12-17 | 1973-06-19 | ||
| US4097686A (en) * | 1973-08-04 | 1978-06-27 | Felten & Guilleaume Carlswerk Aktiengesellschaft | Open-air or overhead transmission cable of high tensile strength |
| DE2433099C3 (en) * | 1974-07-10 | 1979-08-16 | Felten & Guilleaume Carlswerk Ag, 5000 Koeln | Electric cable with tension-absorbing elements made of high-strength plastic threads |
| DE2519687A1 (en) * | 1975-04-30 | 1976-11-11 | Siemens Ag | Stranded electrical cable central glass yarn - latter acting as tensile stress accepting core in high speed cable stranding |
| FR2394876A1 (en) * | 1977-06-17 | 1979-01-12 | Lynenwerk Gmbh & Co Kg | ELECTRICAL CABLE FOR TELECOMMUNICATIONS |
| FR2436841A1 (en) * | 1978-09-22 | 1980-04-18 | Rhone Poulenc Textile | NEW TYPE OF ROPE, CABLE AND METHOD FOR THE PRODUCTION THEREOF |
| DE3330096A1 (en) * | 1983-08-20 | 1985-03-21 | AEG-Telefunken Kabelwerke AG, Rheydt, 4050 Mönchengladbach | CABLE WITH TENSILE RELIEF ELEMENTS SURROUNDING THE CABLE CORE |
| US4963695A (en) * | 1986-05-16 | 1990-10-16 | Pirelli Cable Corporation | Power cable with metallic shielding tape and water swellable powder |
| EP0287517B1 (en) * | 1987-04-13 | 1992-01-15 | Schweizerische Isola-Werke | Communication or control cable with a supporting element |
-
1989
- 1989-09-12 DE DE3930496A patent/DE3930496A1/en active Granted
-
1990
- 1990-09-07 DE DE90912765T patent/DE59003626D1/en not_active Revoked
- 1990-09-07 US US07/679,048 patent/US5159157A/en not_active Expired - Fee Related
- 1990-09-07 EP EP90912765A patent/EP0442990B1/en not_active Revoked
- 1990-09-07 ES ES90912765T patent/ES2049042T3/en not_active Expired - Lifetime
- 1990-09-07 WO PCT/DE1990/000686 patent/WO1991004563A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| WO1991004563A1 (en) | 1991-04-04 |
| ES2049042T3 (en) | 1994-04-01 |
| EP0442990A1 (en) | 1991-08-28 |
| US5159157A (en) | 1992-10-27 |
| DE59003626D1 (en) | 1994-01-05 |
| DE3930496A1 (en) | 1991-03-21 |
| DE3930496C2 (en) | 1991-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0442990B1 (en) | Electric cable with traction-resistant element | |
| EP2096645B1 (en) | Electrical conductor | |
| EP0054784B1 (en) | Overhead cable with tension members | |
| DE69403244T2 (en) | Communication cable with a strain relief element, strain relief element for such cables and manufacturing methods thereof. | |
| DE102017210234A1 (en) | Bending resistant shielded composite cable and harness | |
| DE2607449A1 (en) | ROPE AND METHOD FOR MANUFACTURING IT | |
| EP0126509A2 (en) | Optical cable element or cable, and method of making it | |
| DE2339676C3 (en) | High-voltage overhead line cable for electrical energy transmission and process for its production | |
| EP1444703B1 (en) | Flexible electrical line | |
| DE7438507U (en) | Electrical cable with strain relief | |
| DE10101641A1 (en) | Electrical line | |
| DE2433099C3 (en) | Electric cable with tension-absorbing elements made of high-strength plastic threads | |
| DE69125891T2 (en) | Electrical coaxial cable with optical fibers | |
| EP0430867A1 (en) | Low current overheadline cable with parallel cores | |
| DE8914352U1 (en) | Electrical cable with tensile element | |
| DE2306386A1 (en) | ELECTRIC FLAT CABLE | |
| DE4136227A1 (en) | Electrical cable for high tensile loading - has metal conductor wires wrapped or braided around central core of highly oriented polyethylene@ fibres | |
| DE3712991C2 (en) | ||
| DE1964744A1 (en) | High - tension cable | |
| CH670325A5 (en) | Self-supporting electric conductor with stress relief element - has core of hardened synthetic resin contg. polymer fibre bundle in metallic mantle within conductive overlayer | |
| DE2503463C3 (en) | Communication cable | |
| EP0277157B1 (en) | Self-supported cable for overhead electric lines | |
| DD229242A1 (en) | MOTOR VEHICLE LINE WITH TENSILE CONDUCTIVE CONSTRUCTION | |
| EP4064297A1 (en) | Cable and method for producing a cable | |
| DE2010021A1 (en) | Rubber or plastic tube with fibre reinforce- - conductors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19910507 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE DE ES FR GB IT NL SE |
|
| 17Q | First examination report despatched |
Effective date: 19921105 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| ITF | It: translation for a ep patent filed |
Owner name: DOTT. FRANCO CICOGNA |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE DE ES FR GB IT NL SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19931124 Ref country code: NL Effective date: 19931124 Ref country code: BE Effective date: 19931124 |
|
| REF | Corresponds to: |
Ref document number: 97762 Country of ref document: AT Date of ref document: 19931215 Kind code of ref document: T |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19931208 |
|
| REF | Corresponds to: |
Ref document number: 59003626 Country of ref document: DE Date of ref document: 19940105 |
|
| ET | Fr: translation filed | ||
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2049042 Country of ref document: ES Kind code of ref document: T3 |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19940901 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19940907 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19940908 |
|
| 26 | Opposition filed |
Opponent name: KABELMETAL ELECTRO GMBH Effective date: 19940819 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19940907 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
| RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: DELPHI AUTOMOTIVE SYSTEMS DEUTSCHLAND GMBH |
|
| 27W | Patent revoked |
Effective date: 19950421 |