EP1398799A2 - Electrical cable for connecting mobile electrical loads - Google Patents

Electrical cable for connecting mobile electrical loads Download PDF

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Publication number
EP1398799A2
EP1398799A2 EP03292034A EP03292034A EP1398799A2 EP 1398799 A2 EP1398799 A2 EP 1398799A2 EP 03292034 A EP03292034 A EP 03292034A EP 03292034 A EP03292034 A EP 03292034A EP 1398799 A2 EP1398799 A2 EP 1398799A2
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EP
European Patent Office
Prior art keywords
wires
layer
cable
inner jacket
metallic
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Granted
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EP03292034A
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German (de)
French (fr)
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EP1398799A3 (en
EP1398799B1 (en
Inventor
Ferdinand Grögl
Andreas Rietz
Thomas Mann
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Nexans SA
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Nexans SA
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Publication of EP1398799A3 publication Critical patent/EP1398799A3/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/041—Flexible cables, conductors, or cords, e.g. trailing cables attached to mobile objects, e.g. portable tools, elevators, mining equipment, hoisting cables

Definitions

  • the invention relates to an electrical cable for the connection of movable electrical consumers, the at least two consisting of insulated conductors, has stranded veins, one of which is firmly connected, stacked layers have existing insulation, of which the inner layer adjacent to the conductor is softer than the outer layer in which the Veins from a common external gusset between the veins filling inner sheath of insulating material are surrounded and which one electrical shield and an outer jacket made of insulating material are available (DE 100 36 610 A1).
  • Such cables are said to be flexible cables for connecting portable devices can be used with a voltage or signal source.
  • portable devices can for example cranes, machine tools and robots.
  • the cables have to be mechanically highly resilient, with constant bending fatigue strength in the long run and flexibility in a wide temperature range, for example between - 40 ° C and + 80 ° C.
  • the wires are one loose, inner lining made of polyvinyl chloride (PVC) or polyurethane (PUR) surround.
  • PVC polyvinyl chloride
  • PUR polyurethane
  • the veins are relatively loose and can with the constant back and forth Bending the associated cable can be easily damaged.
  • the invention has for its object the cable described above in particular with regard to its flexural strength and its torsionability to improve simplified assembly.
  • This cable has a stable flexural fatigue strength over the long term, making it particularly suitable for long travel distances and frequently changing bending directions is suitable.
  • the veins themselves are with Their special, two-layer insulation with an inner, softer layer for frequently changing bending directions built up. They are in total in the inner jacket radial direction immovably fixed, which fixed the veins like a kind of corset encloses and thereby it before the mechanical forces occurring during bending effectively protects.
  • the separating layer between the wires and the inner jacket provides but sure that the inner jacket is movable relative to the veins, so that the good Bending behavior of the cable is not affected. Rather, there is a good one Compensatory movement of the veins between compression and pressure zones.
  • the good Bending behavior of the cable is also due to the structure of the inner jacket of two layers of different hardness, firmly interconnected, of which the softer layer faces the veins.
  • This construction of the inner jacket allows also a particularly simple assembly of the cable. If necessary, needs to only the outer, harder layer of the inner jacket to be severed. Then he can easily torn off at the separation point without risk of damage to the wires, because the separating layer is present between the same and the inner jacket.
  • the Irrespective of the number of wires the inner jacket has an approximately circular shape Circumferential surface. It thus offers a firm and even base for the electrical shield of the cable and its outer sheath lying over the same Insulating material. That of at least one completely closed metallic layer and an existing existing electrical cable / braid The screen is electrically tight even at higher frequencies. There can therefore be no cable Radiated radiation and the cable itself is effectively protected against external fields.
  • FIG. 1 shows a cross section through a cable according to the invention in a schematic representation.
  • FIG. 2 shows an embodiment of the cable supplemented with respect to FIG. 1.
  • Fig. 3 shows a cross section of an electrical screen usable in the cable in enlarged view.
  • the electrical cable K according to FIG. 1 has two wires 1 stranded together.
  • Each wire 1 consists of a metallic electrical conductor 2, which is surrounded by insulation is composed of two layers 3 and 4 lying one above the other.
  • the inner layer 3 lying against the conductor 2 consists of a softer material than that outer layer 4. Both layers 3 and 4 are firmly connected.
  • the veins 1 can be used to transmit energy or signals. So you can too have different dimensions.
  • the wires 1 and their preferably made of copper existing conductors 2 are only shown in this sense to be generally applicable.
  • the layers 3 and 4 of the wire insulation preferably consist of materials that connect directly to one another when the same is applied to the conductor 2.
  • The can for example by extrusion in tandem or by co-extrusion of the both layers 3 and 4 can be achieved.
  • the inner, softer layer 3 has preferably a higher proportion of elastic than the outer layer 4 Material. In principle, this can be rubber-elastic material, such as ethylene-propylene rubber. It can also be an elastomer or a material act elastomer-like properties.
  • the cores 1 are surrounded by a separating layer 5, which is made, for example, of stearate or Cellulose exists. Both materials can be in powder form and for example be applied to the insulation of the wires 1 by electrostatic charging. For this purpose, the respective powder can be charged itself. But it is also possible that Charge wires 1 electrostatically. The powder can be used to form the Apply the separation layer 5 very evenly to the wires 1.
  • an inner jacket 6 made of insulating material, which in the usual Technology is generated by extrusion. Due to the fact that the material of the inner jacket 6 existing heat combines the material of the separating layer 5 preferably with the Inner jacket 6, so that the separating layer 5 if the Inner jacket 6 is removed with. At the same time, the material of the separating layer 5 is Application of the inner jacket 6 so influenced that it has good sliding properties receives.
  • Lead-free PVC for example, are suitable as materials for the inner jacket 6 or a halogen-free polyolefin compound based on polyethylene or a copolymer of the same.
  • the inner jacket 6 should preferably be constructed so elastically be that it is compressible especially when twisting the cable K.
  • the inner jacket 6 consists of two layers 6a and 6b lying one above the other bond firmly to each other when applied. That can be done again by tandem - or Co-extrusion can be achieved. Similar to the insulation of the wires 1, the inner, layer 6a lying on the separating layer 5 or the wires 1 is softer than the outer layer Layer 6b. It also advantageously has a lower strength than the outer layer 6b. This can again be achieved by appropriate dosing of elastic materials become. The outer layer 6b can improve its compressibility and so that the elastic behavior of the inner jacket 6 can also be foamed. Such an inner jacket 6 can be easier for example for connection purposes Pull off wires 1. As already mentioned, this only requires the outer layer 6b to be cut in a round cut. The inner jacket 6 can then be inclusive Interface layer 5 are torn off at the separation point.
  • the circumferential surface is therefore ideal as a contact surface for further layers of the cable K. suitable.
  • the screen 7 is from an outer jacket 8 Surround insulating material, which consists for example of polyurethane. Between screen 7 and outer jacket 8 can be arranged a separating layer glued to the same, for example a longitudinally overlapping sliver.
  • the inner jacket 6 can have a defined color have, which are clearly recognizable by the colors of the other elements of the cable K. different. Identically constructed cables K can then be used in a simple manner assigned to specific users and / or specific purposes, if their inner sheaths 6 are colored differently.
  • the same are expediently stranded around a central carrier 9, which as Supporting element is used.
  • the carrier 9 can be a thread or a cord made of plastic. He can also be equipped with a tensile element or itself tensile.
  • the structure of the cable K according to FIG. 2 lying over the wires 1 is the same as for the cable K according to FIG. 1.
  • the screen 7 has a band 10 which consists of at least one, with a Plastic carrier 11 is firmly connected metallic layer 12.
  • material for the plastic carrier 11 is preferably a fleece, which give way elastically can and in particular bending and torsional stresses without Resists the risk of damage.
  • the fleece is used to form layer 12, for example "Metallized”.
  • the tape 10 can run lengthwise with overlapping edges around the Be inner jacket 6 that a substantially tubular closed Envelope results.
  • Above the band 10 with an external metallic layer 12 is a Rope or braiding of metallic wires 13 attached.
  • the wires 13 are preferably made of copper.
  • the roping / braiding should be an optical one Have coverage> 90%.
  • the plastic carrier 11 carries a metallic layer 12 on both sides.
  • Fleece used for the plastic carrier 11.
  • the band 10 is preferably arranged between two layers of wires 13 which accordingly form two ropes or braids in the screen 7. The This gives the screen an increased transverse conductivity.
  • the metallic layers 12 are preferably made of copper.
  • wires 13 are for example, tinned copper wires are used.

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  • Insulated Conductors (AREA)
  • Communication Cables (AREA)
  • Cable Accessories (AREA)

Abstract

The cable has at least two twisted insulated wires (1) with insulation with two coatings one above the other, the inner being softer than the outer, a common inner insulating sleeve (6), an electric screen and an insulating outer sleeve. A separating coating (5) between the wires and inner sleeve ensures relative movement between the wires and the inner sleeve.

Description

Die Erfindung bezieht sich auf ein elektrisches Kabel zum Anschluß von bewegbaren elektrischen Verbrauchern, das mindestens zwei aus isolierten Leitern bestehende, miteinander verseilte Adern hat, die eine aus fest miteinander verbundenen, übereinander angeordneten Schichten bestehende Isolierung haben, von denen die innere, am Leiter anliegende Schicht weicher als die äußere Schicht ist, bei welchem die Adern von einem gemeinsamen, zwischen den Adern vorhandene Außenzwickel ausfüllenden Innenmantel aus Isoliermaterial umgeben sind und bei welchem ein elektrischer Schirm und ein Außenmantel aus Isoliermaterial vorhanden sind (DE 100 36 610 A1).The invention relates to an electrical cable for the connection of movable electrical consumers, the at least two consisting of insulated conductors, has stranded veins, one of which is firmly connected, stacked layers have existing insulation, of which the inner layer adjacent to the conductor is softer than the outer layer in which the Veins from a common external gusset between the veins filling inner sheath of insulating material are surrounded and which one electrical shield and an outer jacket made of insulating material are available (DE 100 36 610 A1).

Derartige Kabel sollen als flexible Kabel zur Verbindung von ortsveränderlichen Geräten mit einer Spannungs- bzw. Signalquelle eingesetzt werden. Solche Geräte können beispielsweise Kräne, Werkzeugmaschinen und Roboter sein. Die Kabel müssen mechanisch hoch belastbar sein, mit auf Dauer gleichbleibender Biegewechselfestigkeit und Flexibilität in einem weiten Temperaturbereich, der beispielsweise zwischen - 40 °C und + 80 °C liegt.Such cables are said to be flexible cables for connecting portable devices can be used with a voltage or signal source. Such devices can for example cranes, machine tools and robots. The cables have to be mechanically highly resilient, with constant bending fatigue strength in the long run and flexibility in a wide temperature range, for example between - 40 ° C and + 80 ° C.

Bei bekannten, auf dem Markt erhältlichen Kabeln dieser Art sind die Adern von einem losen, als Füllung dienenden Innenmantel aus Polyvinylchlorid (PVC) oder Polyurethan (PUR) umgeben. Die Adern liegen dadurch relativ lose und können beim dauernden Hinund Herbiegen des zugehörigen Kabels leicht beschädigt werden. Sie sind außerdem mit derartigen Innenmänteln entweder nicht halogenfrei und enthalten bleihaltige Stabilisatoren (PVC) oder nicht flammbeständig (PUR), so daß es im Brandfall zu Folgeschäden kommen kann oder die Kabel schnell nicht mehr funktionsfähig sind.In known cables of this type available on the market, the wires are one loose, inner lining made of polyvinyl chloride (PVC) or polyurethane (PUR) surround. The veins are relatively loose and can with the constant back and forth Bending the associated cable can be easily damaged. You are also with such inner shells either not halogen-free and contain leaded ones Stabilizers (PVC) or not flame-resistant (PUR), so that in case of fire too Consequential damage can occur or the cables quickly become inoperable.

Bei dem bekannten Kabel nach der eingangs erwähnten DE 100 36 610 A1 besteht die innere, weichere Schicht der Aderisolierung aus einem Polypropylen enthaltenden gummielastischen Material, während die äußere Schicht aus einem Material auf der Basis von Polypropylen aufgebaut ist. Die Adern sind dadurch auch bei oftmaligem Biegen des Kabels biegefest. Sie haben außerdem eine gute Gleitfähigkeit, durch welche ihre Biegewechselfestigkeit unterstützt wird. Der die Adern umgebende, im wesentlichen als Füllung dienende Innenmantel gibt dem Kabel eine erhöhte Stabilität, wenn er auch die Außenzwickel zwischen den Adern ausfüllt. Über das Material des Innenmantels sowie über Art und Anordnung des elektrischen Schirms ist in der Druckschrift nichts erwähnt.In the known cable according to DE 100 36 610 A1 mentioned at the beginning there is inner, softer layer of wire insulation made of a polypropylene-containing rubber-elastic material, while the outer layer of a material based is made of polypropylene. The veins are therefore also when the Cable resistant to bending. They also have good lubricity, through which theirs Flexural fatigue strength is supported. The one surrounding the veins, essentially as Filling inner sheath gives the cable increased stability, even if it does Filled in the outer gusset between the wires. About the material of the inner jacket as well Nothing is mentioned in the publication about the type and arrangement of the electrical screen.

Der Erfindung liegt die Aufgabe zugrunde, das eingangs beschriebene Kabel insbesondere bezüglich seiner Dauerbiegefestigkeit und seiner Tordierbarkeit, bei vereinfachtem Konfektionieren zu verbessern.The invention has for its object the cable described above in particular with regard to its flexural strength and its torsionability to improve simplified assembly.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst,

  • daß zwischen den Adern und dem Innenmantel eine Trennschicht angebracht ist, durch welche eine relative Bewegbarkeit zwischen Adern und Innenmantel sichergestellt ist,
  • daß der Innenmantel aus zwei fest miteinander verbundenen, übereinander liegenden Schichten besteht, von denen die innere, den Adern zugewandte Schicht weicher als die äußere Schicht ist,
  • daß der Innenmantel eine etwa kreisrunde Umfangsfläche hat und fest an der Trennschicht bzw. den Adern anliegt und
  • daß der über dem Innenmantel angeordnete elektrische Schirm aus mindestens einer im wesentlichen rohrförmig geschlossenen metallischen Schicht und einer an derselben anliegenden Umseilung oder Umflechtung aus metallischen Drähten besteht, wobei der Außenmantel über dem Schirm angeordnet ist.
According to the invention, this object is achieved by
  • that a separating layer is provided between the wires and the inner jacket, by means of which a relative mobility between the wires and the inner jacket is ensured,
  • that the inner sheath consists of two firmly connected, superimposed layers, of which the inner layer facing the wires is softer than the outer layer,
  • that the inner jacket has an approximately circular circumferential surface and is tight against the interface or the veins and
  • that the electrical screen arranged over the inner jacket consists of at least one substantially tubular closed metallic layer and a cable or braiding adjacent to it consists of metallic wires, the outer jacket being arranged over the screen.

Dieses Kabel hat eine auf Dauer stabile Biegewechselfestigkeit, so daß es besonders für lange Verfahrwege und sich häufig ändernde Biegerichtungen geeignet ist. Solche Anforderungen sind vielfach bei Werkzeugmaschinen gegeben. Die Adern selbst sind mit ihrer speziellen, zweischichtigen Isolierung mit innen liegender, weicherer Schicht für häufig wechselnde Biegerichtungen aufgebaut. Sie sind insgesamt in dem Innenmantel in radialer Richtung unverrückbar festgelegt, der die Adern wie eine Art Korsett fest umschließt und sie dadurch vor den beim Biegen auftretenden mechanischen Kräften wirksam schützt. Die zwischen Adern und Innenmantel angebrachte Trennschicht stellt aber sicher, daß der Innenmantel relativ zu den Adern bewegbar ist, so daß das gute Biegeverhalten des Kabels nicht beeinträchtigt wird. Es ergibt sich vielmehr eine gute Ausgleichsbewegung der Adern zwischen Stauch- und Druckzonen. Das gute Biegeverhalten des Kabels wird außerdem durch den Aufbau des Innenmantels aus zwei unterschiedlich harten, fest miteinander verbundenen Schichten unterstützt, von denen die weichere Schicht den Adern zugewandt ist. Dieser Aufbau des Innenmantels erlaubt auch ein besonders einfaches Konfektionieren des Kabels. Im Bedarfsfall braucht dazu nur die äußere, härtere Schicht des Innenmantels durchtrennt zu werden. Er kann dann an der Trennstelle ohne Beschädigungsgefahr für die Adern leicht abgerissen werden, weil zwischen demselben und dem Innenmantel die Trennschicht vorhanden ist. Der Innenmantel hat, unabhängig von der Anzahl der Adern, eine etwa kreisrunde Umfangsfläche. Er bietet damit eine feste und gleichmäßige Unterlage für den elektrischen Schirm des Kabels und dessen über demselben liegenden Außenmantel aus Isoliermaterial. Der aus mindestens einer rundum geschlossenen metallischen Schicht und einer an derselben anliegenden Umseilung/Umflechtung bestehende elektrische Schirm ist auch bei höheren Frequenzen elektrisch dicht. Es kann daher vom Kabel keine Störstrahlung ausgehen und das Kabel selbst ist gegen Fremdfelder wirksam geschützt.This cable has a stable flexural fatigue strength over the long term, making it particularly suitable for long travel distances and frequently changing bending directions is suitable. Such There are many requirements for machine tools. The veins themselves are with Their special, two-layer insulation with an inner, softer layer for frequently changing bending directions built up. They are in total in the inner jacket radial direction immovably fixed, which fixed the veins like a kind of corset encloses and thereby it before the mechanical forces occurring during bending effectively protects. The separating layer between the wires and the inner jacket provides but sure that the inner jacket is movable relative to the veins, so that the good Bending behavior of the cable is not affected. Rather, there is a good one Compensatory movement of the veins between compression and pressure zones. The good Bending behavior of the cable is also due to the structure of the inner jacket of two layers of different hardness, firmly interconnected, of which the softer layer faces the veins. This construction of the inner jacket allows also a particularly simple assembly of the cable. If necessary, needs to only the outer, harder layer of the inner jacket to be severed. Then he can easily torn off at the separation point without risk of damage to the wires, because the separating layer is present between the same and the inner jacket. The Irrespective of the number of wires, the inner jacket has an approximately circular shape Circumferential surface. It thus offers a firm and even base for the electrical shield of the cable and its outer sheath lying over the same Insulating material. That of at least one completely closed metallic layer and an existing existing electrical cable / braid The screen is electrically tight even at higher frequencies. There can therefore be no cable Radiated radiation and the cable itself is effectively protected against external fields.

Ausführungsbeispiele des Erfindungsgegenstandes sind in den Zeichnungen dargestellt.Exemplary embodiments of the subject matter of the invention are shown in the drawings.

Es zeigen:Show it:

Fig. 1 einen Querschnitt durch ein Kabel nach der Erfindung in schematischer Darstellung.
Fig. 2 eine gegenüber Fig. 1 ergänzte Ausführungsform des Kabels. Fig. 1 shows a cross section through a cable according to the invention in a schematic representation.
FIG. 2 shows an embodiment of the cable supplemented with respect to FIG. 1.

Fig. 3 einen Querschnitt eines in dem Kabel verwendbaren elektrischen Schirms in vergrößerter Darstellung.Fig. 3 shows a cross section of an electrical screen usable in the cable in enlarged view.

Das elektrische Kabel K nach Fig. 1 hat zwei miteinander verseilte Adern 1. Jede Ader 1 besteht aus einem metallischen elektrischen Leiter 2, der von einer Isolierung umgeben ist, die aus zwei übereinander liegenden Schichten 3 und 4 zusammengesetzt ist. Die innere, am Leiter 2 anliegende Schicht 3 besteht aus einem weicheren Material als die äußere Schicht 4. Beide Schichten 3 und 4 sind fest miteinander verbunden. Die Adern 1 können zur Übertragung von Energie oder von Signalen dienen. Sie können daher auch unterschiedliche Abmessungen haben. Die Adern 1 und ihre vorzugsweise aus Kupfer bestehenden Leiter 2 sind in diesem Sinne nur allgemein gültig dargestellt.The electrical cable K according to FIG. 1 has two wires 1 stranded together. Each wire 1 consists of a metallic electrical conductor 2, which is surrounded by insulation is composed of two layers 3 and 4 lying one above the other. The inner layer 3 lying against the conductor 2 consists of a softer material than that outer layer 4. Both layers 3 and 4 are firmly connected. The veins 1 can be used to transmit energy or signals. So you can too have different dimensions. The wires 1 and their preferably made of copper existing conductors 2 are only shown in this sense to be generally applicable.

Die Schichten 3 und 4 der Aderisolierung bestehen vorzugsweise aus Materialien, die sich beim Aufbringen derselben auf den Leiter 2 direkt fest miteinander verbinden. Das kann beispielsweise durch Extrusion im Tandemverfahren oder durch Co-Extrusion der beiden Schichten 3 und 4 erreicht werden. Die innere, weichere Schicht 3 hat vorzugsweise einen gegenüber der äußeren Schicht 4 höheren Anteil an elastischem Material. Das kann grundsätzlich gummielastisches Material sein, wie Ethylen-Propylen-Rubber. Es kann sich mit Vorzug aber auch um ein Elastomer oder ein Material mit elastomerähnlichen Eigenschaften handeln.The layers 3 and 4 of the wire insulation preferably consist of materials that connect directly to one another when the same is applied to the conductor 2. The can for example by extrusion in tandem or by co-extrusion of the both layers 3 and 4 can be achieved. The inner, softer layer 3 has preferably a higher proportion of elastic than the outer layer 4 Material. In principle, this can be rubber-elastic material, such as ethylene-propylene rubber. It can also be an elastomer or a material act elastomer-like properties.

Die Adern 1 sind von einer Trennschicht 5 umgeben, die beispielsweise aus Stearat oder Zellulose besteht. Beide Materialien können in Pulverform vorliegen und beispielsweise durch elektrostatische Aufladung auf die Isolierung der Adern 1 aufgebracht werden. Dazu kann das jeweilige Pulver selbst aufgeladen werden. Es ist aber auch möglich, die Adern 1 elektrostatisch aufzuladen. Das Pulver läßt sich auf diese Weise zur Bildung der Trennschicht 5 sehr gleichmäßig auf die Adern 1 aufbringen.The cores 1 are surrounded by a separating layer 5, which is made, for example, of stearate or Cellulose exists. Both materials can be in powder form and for example be applied to the insulation of the wires 1 by electrostatic charging. For this purpose, the respective powder can be charged itself. But it is also possible that Charge wires 1 electrostatically. The powder can be used to form the Apply the separation layer 5 very evenly to the wires 1.

Über der Trennschicht 5 liegt ein Innenmantel 6 aus Isoliermaterial, der in üblicher Technik durch Extrusion erzeugt wird. Durch die dabei im Material des Innenmantels 6 vorhandene Wärme verbindet sich das Material der Trennschicht 5 vorzugsweise mit dem Innenmantel 6, so daß die Trennschicht 5 bei einem eventuellen Entfernen des Innenmantels 6 mit entfernt wird. Gleichzeitig wird das Material der Trennschicht 5 beim Aufbringen des Innenmantels 6 so beeinflußt, daß dieselbe gute Gleiteigenschaften erhält. Als Materialien für den Innenmantel 6 eignen sich beispielsweise bleifreies PVC oder auch ein halogenfreies Polyolefincompound auf der Basis von Polyethylen oder einem Copolymer desselben. Der Innenmantel 6 soll vorzugsweise so elastisch aufgebaut sein, daß er insbesondere beim Tordieren des Kabels K komprimierbar ist.Over the separating layer 5 is an inner jacket 6 made of insulating material, which in the usual Technology is generated by extrusion. Due to the fact that the material of the inner jacket 6 existing heat combines the material of the separating layer 5 preferably with the Inner jacket 6, so that the separating layer 5 if the Inner jacket 6 is removed with. At the same time, the material of the separating layer 5 is Application of the inner jacket 6 so influenced that it has good sliding properties receives. Lead-free PVC, for example, are suitable as materials for the inner jacket 6 or a halogen-free polyolefin compound based on polyethylene or a copolymer of the same. The inner jacket 6 should preferably be constructed so elastically be that it is compressible especially when twisting the cable K.

Der Innenmantel 6 besteht aus zwei übereinander liegenden Schichten 6a und 6b, die sich beim Aufbringen fest miteinander verbinden. Das kann wieder durch Tandem - oder Co-Extrusion erreicht werden. Ähnlich wie bei der Isolierung der Adern 1 ist die innere, an der Trennschicht 5 bzw. den Adern 1 liegende Schicht 6a weicher als die äußere Schicht 6b. Sie hat mit Vorteil auch eine geringere Festigkeit als die äußere Schicht 6b. Das kann wieder durch entsprechende Dosierung elastischer Materialien erreicht werden. Die äußere Schicht 6b kann zur Verbesserung ihrer Komprimierbarkeit und damit des elastischen Verhaltens des Innenmantels 6 auch geschäumt ausgeführt sein. Ein derartiger Innenmantel 6 läßt sich beispielsweise für Anschlußzwecke leichter von den Adern 1 abziehen. Es braucht dazu - wie bereits erwähnt - nur die äußere Schicht 6b mit einem Rundschnitt durchtrennt zu werden. Der Innenmantel 6 kann dann einschließlich Trennschicht 5 an der Trennstelle abgerissen werden.The inner jacket 6 consists of two layers 6a and 6b lying one above the other bond firmly to each other when applied. That can be done again by tandem - or Co-extrusion can be achieved. Similar to the insulation of the wires 1, the inner, layer 6a lying on the separating layer 5 or the wires 1 is softer than the outer layer Layer 6b. It also advantageously has a lower strength than the outer layer 6b. This can again be achieved by appropriate dosing of elastic materials become. The outer layer 6b can improve its compressibility and so that the elastic behavior of the inner jacket 6 can also be foamed. Such an inner jacket 6 can be easier for example for connection purposes Pull off wires 1. As already mentioned, this only requires the outer layer 6b to be cut in a round cut. The inner jacket 6 can then be inclusive Interface layer 5 are torn off at the separation point.

Der Innenmantel 6 hat, unabhängig von der Anzahl der Adern 1 und deren mehr oder weniger gleichmäßigen Umhüllenden eine etwa kreisrunde Umfangsfläche. Die Umfangsfläche ist damit als Anlagefläche für weitere Schichten des Kabels K bestens geeignet. Über dem Innenmantel 6 liegt ein elektrischer Schirm 7, dessen Aufbau beispielsweise aus Fig. 3 hervorgeht. Der Schirm 7 ist von einem Außenmantel 8 aus Isoliermaterial umgeben, der beispielsweise aus Polyurethan besteht. Zwischen Schirm 7 und Außenmantel 8 kann eine mit demselben verklebte Trennschicht angeordnet sein, beispielsweise ein längseinlaufend überlapptes Faserband.The inner jacket 6, regardless of the number of wires 1 and their more or less uniform envelopes an approximately circular circumferential surface. The The circumferential surface is therefore ideal as a contact surface for further layers of the cable K. suitable. An electrical screen 7, the structure of which is located above the inner jacket 6 3, for example. The screen 7 is from an outer jacket 8 Surround insulating material, which consists for example of polyurethane. Between screen 7 and outer jacket 8 can be arranged a separating layer glued to the same, for example a longitudinally overlapping sliver.

Zur einfachen Identifizierung des Kabels K kann der Innenmantel 6 eine definierte Farbe haben, die sich von den Farben der anderen Elemente des Kabels K deutlich erkennbar unterscheidet. An sich identisch aufgebaute Kabel K können dann auf einfache Weise bestimmten Benutzern und/oder bestimmten Verwendungszwecken zugeordnet werden, wenn ihre Innenmäntel 6 unterschiedlich gefärbt sind.For easy identification of the cable K, the inner jacket 6 can have a defined color have, which are clearly recognizable by the colors of the other elements of the cable K. different. Identically constructed cables K can then be used in a simple manner assigned to specific users and / or specific purposes, if their inner sheaths 6 are colored differently.

Wenn das Kabel K mehr als zwei Adern 1 hat, beispielsweise fünf gemäß Fig. 2, dann werden dieselben zweckmäßig um einen zentralen Träger 9 herum verseilt, der als Stützelement dient. Der Träger 9 kann ein Faden oder eine Kordel aus Kunststoff sein. Er kann auch mit einem zugfesten Element ausgerüstet oder selbst zugfest sein. Für den über den Adern 1 liegenden Aufbau des Kabels K nach Fig. 2 gilt das Gleiche wie für das Kabel K nach Fig. 1.If the cable K has more than two wires 1, for example five according to FIG. 2, then the same are expediently stranded around a central carrier 9, which as Supporting element is used. The carrier 9 can be a thread or a cord made of plastic. He can also be equipped with a tensile element or itself tensile. For the The structure of the cable K according to FIG. 2 lying over the wires 1 is the same as for the cable K according to FIG. 1.

Der Schirm 7 weist gemäß Fig. 3 ein Band 10 auf, das aus mindestens einer, mit einem Kunststoffträger 11 fest verbundenen metallischen Schicht 12 besteht. Als Material für den Kunststoffträger 11 wird vorzugsweise ein Vlies verwendet, das elastisch nachgeben kann und insbesondere Biege- und Torsionsbeanspruchungen ohne Beschädigungsgefahr standhält. Das Vlies wird zur Bildung der Schicht 12 beispielsweise "metallisiert". Das Band 10 kann längseinlaufend mit überlappenden Kanten so um den Innenmantel 6 herumgelegt sein, daß sich eine im wesentlichen rohrförmig geschlossene Hülle ergibt. Über dem Band 10 mit außen liegender metallischer Schicht 12 ist eine Umseilung bzw. Umflechtung aus metallischen Drähten 13 angebracht. Die Drähte 13 bestehen vorzugsweise aus Kupfer. Die Umseilung/Umflechtung soll eine optische Bedeckung > 90 % haben.According to FIG. 3, the screen 7 has a band 10 which consists of at least one, with a Plastic carrier 11 is firmly connected metallic layer 12. As material for the plastic carrier 11 is preferably a fleece, which give way elastically can and in particular bending and torsional stresses without Resists the risk of damage. The fleece is used to form layer 12, for example "Metallized". The tape 10 can run lengthwise with overlapping edges around the Be inner jacket 6 that a substantially tubular closed Envelope results. Above the band 10 with an external metallic layer 12 is a Rope or braiding of metallic wires 13 attached. The wires 13 are preferably made of copper. The roping / braiding should be an optical one Have coverage> 90%.

Wenn auch der sehr schmale Spalt im Überlappungsbereich des Bandes 10 elektrisch vollständig dicht sein soll, wird zweckmäßig ein Band verwendet, dessen Kunststoffträger 11 auf beiden Seiten eine metallische Schicht 12 trägt. Auch hier wird vorzugsweise ein Vlies für den Kunststoffträger 11 verwendet. Bei dieser Ausführungsform des Kabels K wird das Band 10 vorzugsweise zwischen zwei Lagen von Drähten 13 angeordnet, die dementsprechend zwei Umseilungen bzw. Umflechtungen im Schirm 7 bilden. Der Schirm erhält so eine erhöhte Querleitfähigkeit.Even if the very narrow gap in the overlap area of the band 10 is electrical Should be completely tight, a tape is expediently used, the plastic carrier 11 carries a metallic layer 12 on both sides. Here, too, is preferred Fleece used for the plastic carrier 11. In this embodiment of the cable K the band 10 is preferably arranged between two layers of wires 13 which accordingly form two ropes or braids in the screen 7. The This gives the screen an increased transverse conductivity.

Die metallischen Schichten 12 bestehen vorzugsweise aus Kupfer. Als Drähte 13 werden beispielsweise verzinnte Kupferdrähte eingesetzt.The metallic layers 12 are preferably made of copper. As wires 13 are for example, tinned copper wires are used.

Claims (8)

Elektrisches Kabel zum Anschluß von bewegbaren elektrischen Verbrauchern, das mindestens zwei aus isolierten Leitern bestehende, miteinander verseilte Adern hat, die eine aus zwei fest miteinander verbundenen, übereinander angeordneten Schichten bestehende Isolierung haben, von denen die innere, am Leiter anliegende Schicht weicher als die äußere Schicht ist, bei welchem die Adern von einem gemeinsamen, zwischen den Adern vorhandene Außenzwickel ausfüllenden Innenmantel aus Isoliermaterial umgeben sind und bei welchem ein elektrischer Schirm und ein Außenmantel aus Isoliermaterial vorhanden sind, dadurch gekennzeichnet, daß zwischen den Adern (1 ) und dem Innenmantel (6) eine Trennschicht (5) angebracht ist, durch welche eine relative Bewegbarkeit zwischen Adern (1 ) und Innenmantel (6) sichergestellt ist, daß der Innenmantel (6) aus zwei fest miteinander verbundenen, übereinander liegenden Schichten (6a,6b) besteht, von denen die innere, den Adern (1 ) zugewandte Schicht (6a) weicher als die äußere Schicht (6b) ist, daß der Innenmantel (6) eine etwa kreisrunde Umfangsfläche hat und fest an der Trennschicht (5) bzw. den Adern (1 ) anliegt und daß der über dem Innenmantel (6) angeordnete elektrische Schirm (7) aus mindestens einer im wesentlichen rohrförmig geschlossenen metallischen Schicht (12) und einer an derselben anliegenden Umseilung oder Umflechtung aus metallischen Drähten (13) besteht, wobei der Außenmantel (8) über dem Schirm (7) angeordnet ist. Electrical cable for the connection of movable electrical consumers, which has at least two conductors made of insulated conductors, stranded together, which have an insulation consisting of two firmly connected, stacked layers, of which the inner layer adjacent to the conductor is softer than the outer Layer in which the wires are surrounded by a common inner jacket made of insulating material and filling between the wires and in which an electrical shield and an outer jacket made of insulating material are present, characterized in that that a separating layer (5) is provided between the wires (1) and the inner jacket (6), by means of which a relative mobility between the wires (1) and the inner jacket (6) is ensured, that the inner sheath (6) consists of two layers (6a, 6b) which are firmly connected to one another and lie one above the other, of which the inner layer (6a) facing the wires (1) is softer than the outer layer (6b), that the inner jacket (6) has an approximately circular circumferential surface and is tight against the separating layer (5) or the wires (1) and that the electrical shield (7) arranged above the inner sheath (6) consists of at least one substantially tubular closed metallic layer (12) and a cable or braiding adjacent to the same consists of metallic wires (13), the outer sheath (8) above the Umbrella (7) is arranged. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß die Trennschicht (5) aus Stearat besteht.Cable according to claim 1, characterized in that the separating layer (5) consists of stearate. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß die Trennschicht (5) aus Zellulose besteht.Cable according to claim 1, characterized in that the separating layer (5) consists of cellulose. Kabel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die metallische Schicht (12) fest mit einem Kunststoffträger (11 ) zu einem Band (10) verbunden ist, das mit überlappenden Kanten so um den Innenmantel (6) herumgeformt ist, daß die metallische Schicht (12) außen liegt, und daß die metallischen Drähte (13) über dem Band (10) angebracht sind. Cable according to one of claims 1 to 3, characterized in that that the metallic layer (12) is firmly connected to a plastic carrier (11) to form a band (10) which is formed with overlapping edges around the inner jacket (6) so that the metallic layer (12) is on the outside, and that the metallic wires (13) are attached over the band (10). Kabel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zwei metallische Schichten fest mit einem Kunststoffträger (1 1 ) zu einem Band verbunden sind, jede auf einer Seite desselben, und daß das Band (10) zwischen zwei um den Innenmantel (6) herumgeformten Lagen aus metallischen Drähten mit überlappenden Kanten angebracht ist. Cable according to one of claims 1 to 3, characterized in that that two metallic layers are firmly connected to a plastic carrier (1 1) to form a band, each on one side thereof, and that the band (10) is attached between two layers of metallic wire formed around the inner jacket (6) with overlapping edges. Kabel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Kunststoffträger (1 1 ) ein Vlies ist.Cable according to one of claims 1 to 5, characterized in that the plastic carrier (1 1) is a fleece. Kabel nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß bei drei oder mehr Adern (1 ) ein zentraler Träger (9) aus Isoliermaterial vorhanden ist, um den die Adern (1 ) herumverseilt sind.Cable according to one of claims 1 to 6, characterized in that in the case of three or more wires (1) there is a central support (9) made of insulating material, around which the wires (1) are stranded. Kabel nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Innenmantel (6) eine definierte, deutlich erkennbare Farbe hat.Cable according to one of claims 1 to 7, characterized in that the inner jacket (6) has a defined, clearly recognizable color.
EP03292034A 2002-09-12 2003-08-18 Electrical cable for connecting mobile electrical loads Expired - Lifetime EP1398799B1 (en)

Applications Claiming Priority (2)

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DE10242254 2002-09-12
DE10242254A DE10242254A1 (en) 2002-09-12 2002-09-12 Electrical cable for connecting movable electrical consumers

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EP1398799A2 true EP1398799A2 (en) 2004-03-17
EP1398799A3 EP1398799A3 (en) 2004-12-08
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EP (1) EP1398799B1 (en)
AT (1) ATE444559T1 (en)
DE (2) DE10242254A1 (en)

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EP1863040A2 (en) * 2006-05-31 2007-12-05 Nexans Flexible electric cable
EP1768133A3 (en) * 2005-09-22 2013-03-06 HEW-KABEL GmbH Highly flexible shielded electrical cable for high frequency data transmission in rotatable monitors, especially for rotatable LCD devices
CN105390190A (en) * 2015-12-14 2016-03-09 江苏上上电缆集团有限公司 Cable for industrial robot and manufacturing method of cable
EP3142125A1 (en) * 2015-09-09 2017-03-15 Lapp Engineering & Co. Cable
WO2017211828A1 (en) * 2016-06-08 2017-12-14 Coroplast Fritz Müller Gmbh & Co. Kg Coaxial electrical line for automatable processing processes

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EP1589541B1 (en) * 2004-04-19 2007-05-30 Nexans Flexible electric power and control cable
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US7468489B2 (en) 2006-04-24 2008-12-23 Commscope, Inc. Of North Carolina Cable having internal identifying indicia and associated methods
US7804029B1 (en) * 2008-12-05 2010-09-28 The United States Of America As Represented By The United States Department Of Energy Electromagnetic wrap
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EP1863040A2 (en) * 2006-05-31 2007-12-05 Nexans Flexible electric cable
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EP3142125A1 (en) * 2015-09-09 2017-03-15 Lapp Engineering & Co. Cable
CN105390190A (en) * 2015-12-14 2016-03-09 江苏上上电缆集团有限公司 Cable for industrial robot and manufacturing method of cable
WO2017211828A1 (en) * 2016-06-08 2017-12-14 Coroplast Fritz Müller Gmbh & Co. Kg Coaxial electrical line for automatable processing processes

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US20040050582A1 (en) 2004-03-18
US6825419B2 (en) 2004-11-30
DE50311959D1 (en) 2009-11-12
ATE444559T1 (en) 2009-10-15
EP1398799A3 (en) 2004-12-08
DE10242254A1 (en) 2004-03-25
EP1398799B1 (en) 2009-09-30

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