EP1583109B1 - Flexible electrical cable - Google Patents

Flexible electrical cable Download PDF

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Publication number
EP1583109B1
EP1583109B1 EP05290219A EP05290219A EP1583109B1 EP 1583109 B1 EP1583109 B1 EP 1583109B1 EP 05290219 A EP05290219 A EP 05290219A EP 05290219 A EP05290219 A EP 05290219A EP 1583109 B1 EP1583109 B1 EP 1583109B1
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EP
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Prior art keywords
litz wire
conductors
line according
wires
layer
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EP05290219A
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German (de)
French (fr)
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EP1583109A3 (en
EP1583109A2 (en
Inventor
Ferdinand Grögl
Thomas Mann
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Nexans SA
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Nexans SA
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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 a flexible electrical line according to the preamble of patent claim 1 (US Pat. WO 00/49942 ).
  • Such lines are used as control lines, for example for connecting mobile devices with a voltage or signal source.
  • Mobile devices may be, for example, cranes, machine tools and robots.
  • the cables must be mechanically strong, with a constant flexural strength for a long time, for example when used in energy chains. They should remain flexible in a wide temperature range, for example, between -40 ° C and +80 ° C.
  • From the US 5,834,699 A is a highly flexible electrical cable for medical applications out. It has a number of insulated electrical conductors which are twisted around a central element. In the gussets between the conductors insulated tension elements are arranged. The unit of conductors and traction elements is surrounded by a conductive membrane, over which an outer sheath is attached.
  • plastic filling elements are arranged whose diameter is greater than the diameter of the cores. They are stranded together with the wires. For the jacket results in one of the two wires and the two filling elements formed about circular base.
  • the larger diameter filling elements allow adaptation of the characteristic impedance of the line to desired values.
  • the electrical line according to the above-mentioned WO 00/49942 is placed in a blood glucose meter. It has three wires and a tinned copper wire drain wire, which are together surrounded by an electric shield, which is designed as a braid of tinned copper wires. The supplementary wire serves to contact the shield.
  • the invention has for its object to make the line initially described so that it is equipped with effective electrical shielding and easy to manufacture and can be used with frequent bending stress.
  • the shield layer consists of a hybrid band with a plastic layer and a metal layer.
  • the hybrid tape is wrapped around the wires and the litz in an overlapping manner, in such a way that the metal layer rests against the wires and in particular close to the strand.
  • the strand also complements on one side of the two wires the cross section of the line, which can be easily formed approximately circular with appropriate design of the opposite side.
  • this approximately circular cross-section can be easily and effectively achieved.
  • the line L to Fig. 1 has two wires 1 and 2, each having a preferably made of copper stranded conductor 3, which is surrounded by an insulation 4.
  • the wires 1 and 2 are stranded together with a strand 5 and serving as a filler element strand 6 of insulating material into one unit.
  • a shield layer 7 is attached, which is surrounded by a jacket 8 made of insulating material.
  • the stranded conductors 3 of the cores 1 and 2 are constructed, for example, of seven individual wires 9. However, it is also possible to use a different number of individual wires, which as a whole should always complement each other to form a strand conductor which is as circular as possible. This also applies, for example, to nineteen individual wires with the structure 1 + 6 + 12, ie with twelve individual wires in the outer layer.
  • the individual wires 9 are preferably made of copper. They are stranded together, for example, in a known technique, so that a stranded conductor 3 with a Fig. 1 apparent cross-section results. But they can also be combined lying parallel to the stranded conductor 3, for example in a so-called nipple.
  • the stranded conductor 3 is then fed to an extruder, in which the insulation 4 is applied to the same.
  • the insulation 4 is preferably made of a polyolefin, for example polyethylene or polypropylene.
  • the strand 5 consists of individual wires 10, which are designed as tinned copper wires.
  • the dimensions and number of the individual wires 10 are preferably the same as those of the stranded conductors 3.
  • the individual wires 10 (or optionally multiple wires) can also be stranded into the stranded wire 5 (eg, 1 + 6) stranded or parallel to one another.
  • the wires 1 and 2 and the strand 5 and the strand 6 are stranded together in a subsequent operation with the shortest possible strike length without reverse rotation to form a unit, resulting in the cross section according to Fig. 1 an approximately circular envelope with the diameter D results.
  • the diameter D corresponds to the sum of the diameters of the two wires 1 and 2.
  • the individual wires 9 of the stranded conductor 3 and / or the individual wires 10 of the stranded wire 5 are not stranded with each other, but are combined in parallel to each other, applies for the stranding of wires 1 and 2 and strand 5 and strand 6, the same situation, as described above. Even after this stranding process, for which a double-twist stranding machine is preferably used, the individual wires 9 and 10 continue to run parallel to each other. In a stranding without reverse rotation, they assume exactly the stranding length.
  • the shield layer 7 is applied. This can be done in the same operation as the previous measures by overlapping winding a hybrid tape.
  • the strand 5 and the shield layer 7 together form the electrically effective screen of the line L.
  • a hybrid band of a plastic layer and a metal layer is used, which are firmly connected to each other by a special adhesive.
  • the hybrid tape is wound up so that the metal layer lies inside and thus contacts both the stranded wire 5 and the wires 1 and 2.
  • the plastic layer is preferably made of polyester.
  • aluminum or copper are preferably used.
  • Such a hybrid tape is for example also referred to as "plastic-laminated aluminum foil”.
  • Over the shield layer 7 of the jacket 8 is arranged made of insulating material. It can be applied by means of an extruder and consists for example of a polyolefin, such as polyethylene or polypropylene, or of a thermoplastic elastomer, such as polyurethane. Before the extrusion of the jacket 8, a heat-sealing layer can be applied to the shielding layer 7 in order to bond the jacket 8 to the shielding layer 7. When removing the jacket 8 for Kunststoff muscless processede the shield layer 7 is then removed at the same time, so that a Schirmerdung can be done directly on the strand 5.
  • a polyolefin such as polyethylene or polypropylene
  • a thermoplastic elastomer such as polyurethane
  • the jacket 8 can also consist of at least one heat-sealable plastic film which can be wrapped around the shield layer 7 so that the heat-sealable layer is inside. Between the jacket 8 and the shield layer 7 with additional heat-sealable layer bonding can be achieved after appropriate heating. When assembling the line L then the jacket 8 can be removed together with the shield layer 7.
  • a second strand 11 is used, which is constructed as the strand 5 of individual wires 10.
  • the strand 11 is also close to the shield layer 7.
  • a line L according to Fig. 1 and a line L1 to Fig. 2 can be used as flexible lines, for example for the transmission of data between a signal source and a portable device. But they can also be arranged together with identically constructed lines and other elements in a parent cable.
  • a cross section through such a cable K with lines L after Fig. 1 is for example in Fig. 3 for a 16-core combined, shielded encoder cable.
  • Fig. 3 In the soul of the cable K after Fig. 3 are three lines L according to Fig. 1 , two quads 12 each with four wires 13 for data or signal transmission and a pair 14 with two wires 15 arranged for power supply.
  • the wires 13 and 15 are each stranded together.
  • Lines L, Quad 12 and Pair 14 are around one central Core element 16 made of plastic stranded around. All described elements of the soul S are surrounded by an electric screen 17.
  • a jacket 18 is mounted made of insulating material. It is preferably made of polyvinyl chloride. For special requirements in terms of media resistance and a thermoplastic polymer may be used, for example polyurethane. Between screen 17 and jacket 18, a release layer 19 may be attached, which consists for example of a polyester fleece or cellulose paper.

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

Abstract

A flexible electric control circuit comprises at least two connected cables (1,2) each of which consists of conductors surrounded by an insulating mantle (4). The conductors consist of wires (9) composed of numerous individual wire threads (3). Cables composed of tin coated copper wires (10) are located between the first set of cables. A screening layer (7) surrounds the complete cable assembly.

Description

Die Erfindung betrifft eine flexible elektrische Leitung gemäß dem Oberbegriff des Patentanspruchs 1 ( WO 00/49942 ).The invention relates to a flexible electrical line according to the preamble of patent claim 1 (US Pat. WO 00/49942 ).

Derartige Leitungen werden als Steuerleitunge beispielsweise zum Verbinden von ortsveränderlichen Geräten mit einer Spannungs- bzw. Signalquelle eingesetzt. Ortsveränderliche Geräte können beispielsweise Kräne, Werkzeugmaschinen und Roboter sein. Die Leitungen müssen mechanisch belastbar sein, mit einer auf lange Zeit gleichbleibenden Biegefestigkeit, beispielsweise beim Einsatz in Energieschleppketten. Sie sollen auch in einem weiten Temperaturbereich flexibel bleiben, der beispielsweise zwischen -40 °C und +80 °C liegt.Such lines are used as control lines, for example for connecting mobile devices with a voltage or signal source. Mobile devices may be, for example, cranes, machine tools and robots. The cables must be mechanically strong, with a constant flexural strength for a long time, for example when used in energy chains. They should remain flexible in a wide temperature range, for example, between -40 ° C and +80 ° C.

Aus der US 5 834 699 A geht ein hochflexibles elektrisches Kabel für medizinische Abwendungen hervor. Es weist eine Anzahl von isolierten elektrischen Leitern auf, die um ein zentrales Element herumverseilt sind. In den Zwickeln zwischen den Leitern sind isolierte Zugelemente angeordnet. Die Einheit aus Leitern und Zugelementen ist von einer leitfähigen Membran umgeben, über welcher ein Außenmantel angebracht ist.From the US 5,834,699 A is a highly flexible electrical cable for medical applications out. It has a number of insulated electrical conductors which are twisted around a central element. In the gussets between the conductors insulated tension elements are arranged. The unit of conductors and traction elements is surrounded by a conductive membrane, over which an outer sheath is attached.

Bei der bekannten Leitung nach dem DE 201 09 974 U1 sind in den Zwickeln der Adern Füllelemente aus Kunststoff angeordnet, deren Durchmesser größer als der Durchmesser der Adern ist. Sie sind zusammen mit den Adern verseilt. Für den Mantel ergibt sich eine von den beiden Adern und den beiden Füllelementen gebildete etwa kreisrunde Unterlage. Die im Durchmesser größeren Füllelemente ermöglichen eine Anpassung des Wellenwiderstandes der Leitung an gewünschte Werte. Durch die Verseilung der Adern miteinander sollen die Wirkung von externen Magnetfeldern reduziert sowie die elektromagnetische Verträglichkeit, die Einstrahlfestigkeit und die Störsicherheit erhöht werden. Ein gesonderter, elektrisch wirksamer Schirm ist nicht vorgesehen. Über den Aufbau der elektrischen Leiter der Adern sind der Druckschrift keine Angaben zu entnehmen.In the known line after the DE 201 09 974 U1 In the interstices of the cores plastic filling elements are arranged whose diameter is greater than the diameter of the cores. They are stranded together with the wires. For the jacket results in one of the two wires and the two filling elements formed about circular base. The larger diameter filling elements allow adaptation of the characteristic impedance of the line to desired values. By stranding the wires together, the effect of external magnetic fields is to be reduced and the electromagnetic compatibility, the radiation resistance and the immunity to interference are increased. A separate, electrically effective screen is not provided. About the structure of the electrical conductors of the wires of the document are not specified.

Die elektrische Leitung nach der eingangs erwähnten WO 00/49942 ist in einem Gerät zur Blutzuckermessung angeordnet. Sie hat drei Adern und einen aus verzinnten Kupferdrähten bestehenden Beilaufdraht, die gemeinsam von einem elektrischen Schirm umgeben sind, der als Geflecht aus verzinnten Kupferdrähten ausgeführt ist. Der Beilaufdraht dient zur Kontaktierung des Schirms.The electrical line according to the above-mentioned WO 00/49942 is placed in a blood glucose meter. It has three wires and a tinned copper wire drain wire, which are together surrounded by an electric shield, which is designed as a braid of tinned copper wires. The supplementary wire serves to contact the shield.

Der Erfindung liegt die Aufgabe zugrunde, die eingangs geschilderte Leitung so zu gestalten, daß sie mit wirksamer elektrischer Schirmung ausgerüstet und einfach herzustellen ist sowie auch bei häufiger Biegebeanspruchung eingesetzt werden kann.The invention has for its object to make the line initially described so that it is equipped with effective electrical shielding and easy to manufacture and can be used with frequent bending stress.

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

Diese Leitung ist sehr einfach herstellbar, und zwar mit Einsatz von grundsätzlich bekannten, einfach aufgebauten Maschinen und zugehörigen Vorrichtungen, wie beispielsweise Ablauf- und Aufwickeleinrichtungen. Durch das Zusammenwirken von Litze und Schirmlage ergibt sich auf einfache Weise ein elektrisch hochwirksamer Schirm für die Leitung. Wegen der Litze kann die Schirmlage relativ materialarm ausgeführt werden, wodurch einerseits die gute Biegbarkeit der Leitung unterstützt und andererseits die für eine häufige Biegebeanspruchung geforderte Stabilität sichergestellt ist. Die Schirmlage besteht aus einem Hybridband mit einer Kunststoffschicht und einer Metallschicht. Das Hybridband ist überlappend um die Adern und die Litze herumgewickelt, und zwar so, daß die Metallschicht an den Adern und insbesondere dicht an der Litze anliegt. Die Litze ergänzt außerdem auf der einen Seite der beiden Adern den Querschnitt der Leitung, der bei entsprechender Gestaltung der gegenüberliegenden Seite leicht etwa kreisrund geformt werden kann.This line is very easy to produce, with the use of basically known, simply constructed machines and associated devices, such as drain and rewinders. The interaction of the strand and the shield layer results in a simple way an electrically highly effective screen for the line. Because of the strand, the shield layer can be made relatively low material, which on the one hand supports the good bendability of the line and on the other hand, the required for a frequent bending stress stability is ensured. The shield layer consists of a hybrid band with a plastic layer and a metal layer. The hybrid tape is wrapped around the wires and the litz in an overlapping manner, in such a way that the metal layer rests against the wires and in particular close to the strand. The strand also complements on one side of the two wires the cross section of the line, which can be easily formed approximately circular with appropriate design of the opposite side.

Zusammen mit einer zweiten Litze aus verzinnten Kupferdrähten oder einem Strang gleicher Abmessungen, die im der Litze gegenüberliegenden Zwickel zwischen den beiden Adern angeordnet werden, kann dieser etwa kreisrunde Querschnitt einfach und sinnvoll erreicht werden.Together with a second strand of tinned copper wires or a strand of the same dimensions, which are arranged in the strand opposite gusset between the two wires, this approximately circular cross-section can be easily and effectively achieved.

Ausführungsbeispiele des Erfindungsgegenstandes sind in den Zeichnungen dargestellt.Embodiments of the subject invention are illustrated in the drawings.

Es zeigen:

  • Fig. 1 einen Querschnitt durch eine Leitung nach der Erfindung.
  • Fig. 2 eine gegenüber Fig. 1 ergänzte Ausführungsform der Leitung.
  • Fig. 3 einen Querschnitt durch ein Kabel mit mehreren Leitungen nach Fig. 1 und anderen Elementen in verkleinerter Darstellung.
Show it:
  • Fig. 1 a cross section through a conduit according to the invention.
  • Fig. 2 one opposite Fig. 1 supplemented embodiment of the line.
  • Fig. 3 a cross section through a cable with multiple lines after Fig. 1 and other elements in a reduced scale.

Die Leitung L nach Fig. 1 hat zwei Adern 1 und 2, die jeweils einen vorzugsweise aus Kupfer bestehenden Litzenleiter 3 aufweisen, welcher von einer Isolierung 4 umgeben ist. Die Adern 1 und 2 sind zusammen mit einer Litze 5 und einem als Füllelement dienenden Strang 6 aus Isoliermaterial zu einer Einheit verseilt. Über der Einheit aus Adern 1 und 2 sowie Litze 5 und Strang 6 ist eine Schirmlage 7 angebracht, welche von einem Mantel 8 aus Isoliermaterial umgeben ist.The line L to Fig. 1 has two wires 1 and 2, each having a preferably made of copper stranded conductor 3, which is surrounded by an insulation 4. The wires 1 and 2 are stranded together with a strand 5 and serving as a filler element strand 6 of insulating material into one unit. Above the unit Cores 1 and 2 and strand 5 and strand 6, a shield layer 7 is attached, which is surrounded by a jacket 8 made of insulating material.

Die Litzenleiter 3 der Adern 1 und 2 sind beispielsweise aus sieben Einzeldrähten 9 aufgebaut. Es kann aber auch eine andere Anzahl von Einzeldrähten eingesetzt werden, die sich insgesamt stets zu einem möglichst kreisrunden Litzenleiter ergänzen sollen. Das gilt beispielsweise auch für neunzehn Einzeldrähte mit dem Aufbau 1 + 6 + 12, also mit zwölf Einzeldrähten in der Außenlage. Die Einzeldrähte 9 bestehen vorzugsweise aus Kupfer. Sie werden in bekannter Technik beispielsweise miteinander verseilt, so daß sich ein Litzenleiter 3 mit einem aus Fig. 1 ersichtlichen Querschnitt ergibt. Sie können aber auch parallel zueinander liegend zu dem Litzenleiter 3 zusammengefaßt werden, beispielsweise in einem sogenannten Nippel. Der Litzenleiter 3 wird dann einem Extruder zugeführt, in dem die Isolierung 4 auf denselben aufgebracht wird. Die Isolierung 4 besteht vorzugsweise aus einem Polyolefin, beispielsweise aus Polyethylen oder Polypropylen.The stranded conductors 3 of the cores 1 and 2 are constructed, for example, of seven individual wires 9. However, it is also possible to use a different number of individual wires, which as a whole should always complement each other to form a strand conductor which is as circular as possible. This also applies, for example, to nineteen individual wires with the structure 1 + 6 + 12, ie with twelve individual wires in the outer layer. The individual wires 9 are preferably made of copper. They are stranded together, for example, in a known technique, so that a stranded conductor 3 with a Fig. 1 apparent cross-section results. But they can also be combined lying parallel to the stranded conductor 3, for example in a so-called nipple. The stranded conductor 3 is then fed to an extruder, in which the insulation 4 is applied to the same. The insulation 4 is preferably made of a polyolefin, for example polyethylene or polypropylene.

Die Litze 5 besteht aus Einzeldrähten 10, die als verzinnte Kupferdrähte ausgeführt sind. Abmessungen und Anzahl der Einzeldrähte 10 stimmen vorzugsweise mit denen der Litzenleiter 3 überein. Auch die Einzeldrähte 10 (oder gegebenenfalls Mehrfachdrähte) können zu der Litze 5 mit geordnetem Drahtaufbau (z. B. 1 + 6) verseilt oder parallel zueinander verlaufend zusammengefaßt werden.The strand 5 consists of individual wires 10, which are designed as tinned copper wires. The dimensions and number of the individual wires 10 are preferably the same as those of the stranded conductors 3. The individual wires 10 (or optionally multiple wires) can also be stranded into the stranded wire 5 (eg, 1 + 6) stranded or parallel to one another.

Die Adern 1 und 2 sowie die Litze 5 und der Strang 6 werden in einem folgenden Arbeitsgang mit möglichst kurzer Schlaglänge ohne Rückdrehung zu einer Einheit miteinander verseilt, wodurch sich im Querschnitt gemäß Fig. 1 eine etwa kreisförmige Umhüllende mit dem Durchmesser D ergibt. Der Durchmesser D entspricht der Summe der Durchmesser der beiden Adern 1 und 2. Durch die Verseilung werden die für die flexible Leitung L gestellten Anforderungsprofile, wie Biegbarkeit und Bewegungszyklen in einer Schleppkette, erreicht. Die Schlaglänge liegt mit Vorteil zwischen 6 x D und 14 x D, mit dem Durchmesser D der Einheit aus den vier Verseilelementen.The wires 1 and 2 and the strand 5 and the strand 6 are stranded together in a subsequent operation with the shortest possible strike length without reverse rotation to form a unit, resulting in the cross section according to Fig. 1 an approximately circular envelope with the diameter D results. The diameter D corresponds to the sum of the diameters of the two wires 1 and 2. By stranding the demand profiles set for the flexible line L, such as bendability and movement cycles in a drag chain, are achieved. The lay length is advantageously between 6 x D and 14 x D, with the diameter D of the unit of the four stranding elements.

Wenn die Einzeldrähte 9 der Litzenleiter 3 und/oder die Einzeldrähte 10 der Litze 5 nicht miteinander verseilt, sondern parallel zueinander verlaufend zusammengefaßt sind, gilt für den Verseilprozeß von Adern 1 und 2 sowie Litze 5 und Strang 6 der gleiche Sachverhalt, wie oben beschrieben. Auch nach diesem Verseilprozeß, für den vorzugsweise eine Doppelschlagverseilmaschine eingesetzt wird, verlaufen die Einzeldrähte 9 bzw. 10 weiter parallel zueinander. Sie nehmen bei einer Verseilung ohne Rückdrehung exakt die Verseilschlaglänge an.If the individual wires 9 of the stranded conductor 3 and / or the individual wires 10 of the stranded wire 5 are not stranded with each other, but are combined in parallel to each other, applies for the stranding of wires 1 and 2 and strand 5 and strand 6, the same situation, as described above. Even after this stranding process, for which a double-twist stranding machine is preferably used, the individual wires 9 and 10 continue to run parallel to each other. In a stranding without reverse rotation, they assume exactly the stranding length.

Über der Einheit aus Adern 1 und 2 sowie Litze 5 und Strang 6 ist die Schirmlage 7 aufgebracht. Das kann im gleichen Arbeitsgang wie die vorangehenden Maßnahmen durch überlappendes Aufwickeln eines Hybridbandes geschehen. Die Litze 5 und die Schirmlage 7 bilden zusammen den elektrisch wirksamen Schirm der Leitung L.Above the unit of cores 1 and 2 and strand 5 and strand 6, the shield layer 7 is applied. This can be done in the same operation as the previous measures by overlapping winding a hybrid tape. The strand 5 and the shield layer 7 together form the electrically effective screen of the line L.

Für die Schirmlage 7 wird ein Hybridband aus einer Kunststoffschicht und einer Metallschicht eingesetzt, die durch einen Spezialkleber fest miteinander verbunden sind. Das Hybridband wird so aufgewickelt, daß die Metallschicht innen liegt und damit sowohl an der Litze 5 kontaktierend als auch an den Adern 1 und 2 anliegt. Die Kunststoffschicht besteht vorzugsweise aus Polyester. Für die Metallschicht werden vorzugsweise Aluminium oder Kupfer eingesetzt. Ein solches Hybridband wird beispielsweise auch als "kunststoffkaschierte Aluminiumfolie" bezeichnet.For the shield layer 7, a hybrid band of a plastic layer and a metal layer is used, which are firmly connected to each other by a special adhesive. The hybrid tape is wound up so that the metal layer lies inside and thus contacts both the stranded wire 5 and the wires 1 and 2. The plastic layer is preferably made of polyester. For the metal layer, aluminum or copper are preferably used. Such a hybrid tape is for example also referred to as "plastic-laminated aluminum foil".

Über der Schirmlage 7 ist der Mantel 8 aus Isoliermaterial angeordnet. Er kann mittels eines Extruders aufgebracht werden und besteht beispielsweise aus einem Polyolefin, wie Polyethylen oder Polypropylen, oder aus einem thermoplastischen Elastomer, wie Polyurethan. Vor der Extrusion des Mantels 8 kann auf die Schirmlage 7 eine Heißsiegelschicht aufgebracht werden, um den Mantel 8 mit der Schirmlage 7 zu verkleben. Beim Entfernen des Mantels 8 für Kontaktierungszwecke wird die Schirmlage 7 dann gleichzeitig mit entfernt, so daß eine Schirmerdung direkt über die Litze 5 erfolgen kann.Over the shield layer 7 of the jacket 8 is arranged made of insulating material. It can be applied by means of an extruder and consists for example of a polyolefin, such as polyethylene or polypropylene, or of a thermoplastic elastomer, such as polyurethane. Before the extrusion of the jacket 8, a heat-sealing layer can be applied to the shielding layer 7 in order to bond the jacket 8 to the shielding layer 7. When removing the jacket 8 for Kontaktierungszwecke the shield layer 7 is then removed at the same time, so that a Schirmerdung can be done directly on the strand 5.

Der Mantel 8 kann aber auch aus mindestens einer heißsiegelfähigen Kunststofffolie bestehen, die um die Schirmlage 7 so herumgewickelt werden kann, daß die heißsiegelfähige Schicht innen liegt. Zwischen dem Mantel 8 und der Schirmlage 7 mit zusätzlicher heißsiegelfähiger Schicht kann nach entsprechender Erwärmung eine Verklebung erreicht werden. Bei einer Konfektionierung der Leitung L kann dann der Mantel 8 gemeinsam mit der Schirmlage 7 entfernt werden.But the jacket 8 can also consist of at least one heat-sealable plastic film which can be wrapped around the shield layer 7 so that the heat-sealable layer is inside. Between the jacket 8 and the shield layer 7 with additional heat-sealable layer bonding can be achieved after appropriate heating. When assembling the line L then the jacket 8 can be removed together with the shield layer 7.

Der gleiche Sachverhalt, wie er für die Leitung L nach Fig. 1 beschrieben ist, gilt für eine Leitung L1 nach Fig. 2. In der Leitung L1 ist statt des Stranges 6 eine zweite Litze 11 eingesetzt, die ebenso wie die Litze 5 aus Einzeldrähten 10 aufgebaut ist. Die Litze 11 liegt ebenfalls dicht an der Schirmlage 7 an.The same facts, as for the line L after Fig. 1 is described, applies to a line L1 to Fig. 2 , In the line L1 instead of the strand 6, a second strand 11 is used, which is constructed as the strand 5 of individual wires 10. The strand 11 is also close to the shield layer 7.

Eine Leitung L gemäß Fig. 1 und eine Leitung L1 nach Fig. 2 können als flexible Leitungen beispielsweise zur Übertragung von Daten zwischen einer Signalquelle und einem ortsveränderlichen Gerät eingesetzt werden. Sie können aber auch zusammen mit identisch aufgebauten Leitungen und anderen Elementen in einem übergeordneten Kabel angeordnet werden. Ein Querschnitt durch ein solches Kabel K mit Leitungen L nach Fig. 1 ist beispielsweise in Fig. 3 für eine 16-adrige kombinierte, geschirmte Geberleitung dargestellt.A line L according to Fig. 1 and a line L1 to Fig. 2 can be used as flexible lines, for example for the transmission of data between a signal source and a portable device. But they can also be arranged together with identically constructed lines and other elements in a parent cable. A cross section through such a cable K with lines L after Fig. 1 is for example in Fig. 3 for a 16-core combined, shielded encoder cable.

In der Seele des Kabels K nach Fig. 3 sind drei Leitungen L gemäß Fig. 1, zwei Vierer 12 mit jeweils vier Adern 13 zur Daten- bzw. Signalübertragung und ein Paar 14 mit zwei Adern 15 zur Stromversorgung angeordnet. Die Adern 13 und 15 sind jeweils miteinander verseilt. Leitungen L, Vierer 12 und Paar 14 sind um ein zentrales Kernelement 16 aus Kunststoff herum verseilt. Alle beschriebenen Elemente der Seele S sind von einem elektrischen Schirm 17 umgeben.In the soul of the cable K after Fig. 3 are three lines L according to Fig. 1 , two quads 12 each with four wires 13 for data or signal transmission and a pair 14 with two wires 15 arranged for power supply. The wires 13 and 15 are each stranded together. Lines L, Quad 12 and Pair 14 are around one central Core element 16 made of plastic stranded around. All described elements of the soul S are surrounded by an electric screen 17.

Über dem Schirm 17 ist ein Mantel 18 aus Isoliermaterial angebracht. Er besteht vorzugsweise aus Polyvinylchlorid. Bei besonderen Anforderungen hinsichtlich Medienbeständigkeit kann auch ein thermoplastisches Polymer eingesetzt werden, beispielsweise Polyurethan. Zwischen Schirm 17 und Mantel 18 kann eine Trennschicht 19 angebracht sein, die beispielsweise aus einem Polyestervlies oder aus Zellulosepapier besteht.Over the screen 17, a jacket 18 is mounted made of insulating material. It is preferably made of polyvinyl chloride. For special requirements in terms of media resistance and a thermoplastic polymer may be used, for example polyurethane. Between screen 17 and jacket 18, a release layer 19 may be attached, which consists for example of a polyester fleece or cellulose paper.

Claims (10)

  1. Flexible electrical line comprising at least two insulated conductors (1,2), each of the conductors (1,2) has a litz wire (3) which comprises a plurality of single wires (9) and is surrounded by an insulation (4), in at least one of the interstices between the two conductors (1,2) at least one litz wire (5,11) is positioned comprising a plurality of tinned copper wires (10), the conductors (1,2) and the litz wire (5,11) are stranded with each other to form a unit which is surrounded by a screening layer (7) made of electrically good conducting material and which contacts the conductors (1,2) and the litz wire (5,11), and a sheath (8) of insulating material surrounds the screening layer, characterized in
    - that a hybrid ribbon is used for the screening layer (7) which is wound with overlap around the unit of conductors (1,2) and litz wire (5,11) and which consists of a plastic layer and a metallic layer which is fixed to the plastic layer and which abuts to the conductors (1,2) and the litz wire (5,11), and
    - that the unit of conductors (1,2) and litz wire (5,11) is stranded with a short length of lay, which lies between 6 x D and 14 x D, with D being the diameter of a circular envelope of the unit.
  2. Line according to claim 1, characterized in that the sheath (8) is adhered to the screening layer (7).
  3. Line according to claim 1 or 2, characterized in that the sheath (8) consists of a heat-sealing plastic foil, which is wound around the screening layer (7).
  4. Line according to one of the claims 1 to 3, characterized in that the single wires (9) of the litz wire (3) are stranded with each other.
  5. Line according to one of the claims 1 to 3, characterized in that the single wires (9) of the litz wire (3) are arranged parallel to each other.
  6. Line according to one ofthe claimslto 5, characterized in that within both interstices between the conductors (1,2) a litz wire (5,11) is mounted which consists of tinned copperwires(10).
  7. Line according to claim 1 or 6, characterized in that the copper wires (10) of the litz wire (5,11) are stranded with each other.
  8. Line according to claim 1 or 6, characterized in that the copper wires (10) of the litz wire (5,11) are arranged parallel to each other.
  9. Line according to claim 1, characterized in that the metallic layer of the hybrid ribbon consists of aluminium or copper.
  10. Line according to claim 1, characterized in that the plastic layer of the hybrid ribbon consistofpolyester.
EP05290219A 2004-03-31 2005-01-31 Flexible electrical cable Expired - Lifetime EP1583109B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05290219A EP1583109B1 (en) 2004-03-31 2005-01-31 Flexible electrical cable

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04290851 2004-03-31
EP04290851 2004-03-31
EP05290219A EP1583109B1 (en) 2004-03-31 2005-01-31 Flexible electrical cable

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EP1583109A2 EP1583109A2 (en) 2005-10-05
EP1583109A3 EP1583109A3 (en) 2006-02-08
EP1583109B1 true EP1583109B1 (en) 2010-03-03

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EP05290219A Expired - Lifetime EP1583109B1 (en) 2004-03-31 2005-01-31 Flexible electrical cable

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EP (1) EP1583109B1 (en)
AT (1) ATE459966T1 (en)
DE (1) DE502005009115D1 (en)
ES (1) ES2341970T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113611454A (en) * 2021-08-25 2021-11-05 金杯电工衡阳电缆有限公司 Novel festoon cable

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8431784D0 (en) * 1984-12-17 1985-01-30 Connor L O Tape for wrapping electrical conductors
FR2745117B1 (en) * 1996-02-21 2000-10-13 Whitaker Corp FLEXIBLE AND FLEXIBLE CABLE WITH SPACED PROPELLERS
AU3245500A (en) * 1999-02-25 2000-09-14 Minimed, Inc. Test plug and cable for a glucose monitor

Also Published As

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EP1583109A3 (en) 2006-02-08
ES2341970T3 (en) 2010-06-30
DE502005009115D1 (en) 2010-04-15
EP1583109A2 (en) 2005-10-05
ATE459966T1 (en) 2010-03-15

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