EP2448074A1 - Electric connection cable - Google Patents

Electric connection cable Download PDF

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Publication number
EP2448074A1
EP2448074A1 EP11401621A EP11401621A EP2448074A1 EP 2448074 A1 EP2448074 A1 EP 2448074A1 EP 11401621 A EP11401621 A EP 11401621A EP 11401621 A EP11401621 A EP 11401621A EP 2448074 A1 EP2448074 A1 EP 2448074A1
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EP
European Patent Office
Prior art keywords
shielding
tape
strip
electrical
bundle
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.)
Withdrawn
Application number
EP11401621A
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German (de)
French (fr)
Inventor
Michael Frey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phoenix Contact Connector Technology GmbH
Original Assignee
Coninvers GmbH
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Filing date
Publication date
Application filed by Coninvers GmbH filed Critical Coninvers GmbH
Publication of EP2448074A1 publication Critical patent/EP2448074A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/28—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/10—Screens specially adapted for reducing interference from external sources
    • H01B11/1025—Screens specially adapted for reducing interference from external sources composed of a helicoidally wound tape-conductor
    • 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
    • H01B7/1855—Sheaths comprising helical wrapped non-metallic layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
    • H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
    • H01R24/56—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency specially adapted to a specific shape of cables, e.g. corrugated cables, twisted pair cables, cables with two screens or hollow cables

Definitions

  • the invention relates to an electrical connection cable with a flexible electrical line and at least one electrical connector at one end of the line, wherein the electrical line comprises a wire bundle of insulated stranded conductors, a film bundle enclosing the bundle of wires and a protective film enclosing the film screen, the conduit terminating outwards and wherein the connector comprises a metallic connector housing with isolated recorded contacts and a molded shielding sleeve, with which the stranded conductor or the film screen are electrically connected.
  • Such cables with at least one shielded connector and at least two jointly shielded electrical conductors of insulated stranded conductors are known per se as flexible transmission cables in various embodiments.
  • Corresponding transmission cables are used inter alia to provide an externally accessible electrical interface to the surrounding housing in the case of electrically operated devices with a housing.
  • the connector is usually fixed to an opening of the housing, wherein the electrical line electrically connects the connector with the built-in components in the housing components.
  • connection cables It is also known to use such connection cables in industry-standard devices in industrial environments, such as control devices or the like. Industrial use places increased demands on EMC interference immunity.
  • EMC interference immunity In order to reliably prevent the transmission or reception of electromagnetic interference fields from current-carrying lines, it is common practice to surround electrical lines with a grounded sheath, for example in the form of a conductive foil screen, and envelop it by an overarching protective sheath protecting the foil shield.
  • a grounded sheath for example in the form of a conductive foil screen
  • an overarching protective sheath protecting the foil shield.
  • the mechanical and electrical connection of the stranded conductors to the contacts is usually in accordance with the typical state of the art, i. H. usually by clamping, soldering or crimping.
  • the film screen is electrically and mechanically connected to a shielding sleeve of the housing of the electrical connector in a corresponding manner.
  • prefabricated electrical lines are used for the production of such connecting cable, which has a wire bundle of at least two insulated stranded conductor, a foil bundle enclosing the wire bundle and the film screen enclosing the line to the outside final tubular protective jacket made of plastic material.
  • a problem with the conventional cut-to-length lines used is that the film screen can be attached to conventional connectors only consuming.
  • the usually glued with the insulation of the stranded conductors shield severely cut without damaging the insulation of the stranded conductor.
  • the film screen to be connected to the shield sleeve of the connector by crimping automatically must be placed usually on the protective cover of the electrical cable.
  • producing the electrical connection cable is generally time consuming Method and limits the speed at which the cable can be made.
  • the relatively high unit costs of the prefabricated line prevent the provision of a low-cost connection cable.
  • the present invention seeks to propose an improved in business management and in manufacturing technology generic generic electrical connection cable, which is suitable for a cost, especially fully automatic mass production and yet allows a reliable connection.
  • the invention is based on the core idea, instead of a prefabricated electrical line comprising a wire bundle of insulated stranded conductors, a film bundle enclosing the film bundle and the protective film enclosing the film screen to use a number of automatically prefabricated insulated stranded conductors with battered contacts, these after connecting with to form the at least one electrical connector to a wire bundle and then fully automatically enclose the wire bundle with the film screen and also to wrap the film screen with a protective cover.
  • the film screen consists of at least one shielding tape and the protective cover of a cover strip, which are spirally wound laterally to the stranded conductors laterally overlapping around the wire bundle and the shielding sleeve helically.
  • the shielding band and the cover strip can be timed parallel or serially around the wire bundle and around the metallic plug connector housing, For example, be wrapped around a round housing, molded shielding sleeve. This implies that first the shielding tape is partially or completely preferably wound at an acute angle across the stranded conductors around the wire bundle and the shielding sleeve before the cover tape is applied in the same way to the film screen.
  • the shielding band can also be brought together with the covering band with a small lateral overlap, before the shielding sleeve and the bundle of wires are simultaneously wrapped with it.
  • the shielding band can be made of a single metal, for example aluminum, of a metal composite, for example of galvanized copper or of a plastic-metal laminate and is wound with helical windings along the stranded conductors around the wire bundle and around the shielding sleeve.
  • the edges of the shielding tape preferably overlap narrowly from one turn to the other. In this way, not only the electrical line but also the connector is adequately shielded, in particular at the transition between the wire bundle and its metallic housing.
  • the electrical connection cable with the connector at one end of the electrical lead at the other end of the electrical lead remote from that connector can have either free stranded conductor ends with or without attached contact elements, any unshielded group connector, or a shieldable second connector, preferably similar to the other first connector is formed. It is understood that in two shieldable formed connectors of the cable shield and the protective cover, which are formed by the turns of the shielding band and the Hüllbandes, respectively, the shielding sleeves of the two overlap metallic round housing.
  • the foil screen contacted in any case, the at least one metallic round housing on the shielding sleeve with low electrical contact resistance and forms a composite of the turns of the shielding tape tubular film screen.
  • the wrapped from the cover tape protective cover of the connecting cable forms a tubular protective jacket that protects the film screen from damage and electrical contact from the outside.
  • the protective cover also presses the wire bundle with the film screen in the region of the stranded conductor and the film screen in the region of the screen sleeve formed on the metallic round housing.
  • the wrapper may be of any flexible material and is ideally much thicker in thickness than the strap. It is electrically non-conductive and overlaps the film screen in its length completely in a similar manner as the screen tape the wire bundle and the shielding sleeve.
  • the wrapper is ideally extremely tear and abrasion resistant and preferably glued to the foil screen.
  • the shielding tape is also glued to the wire bundle and the shielding sleeve.
  • the shroud for example, a plastic film or a fabric of plastic threads and / or textile fiber threads or other suitable material.
  • the shroud strip like the shroud strip, is wound up laterally overlapping, ie spirally wound in the direction of extent of the stranded conductor around the foil shed.
  • the cover band which is wound obliquely along the screen band with laterally overlapping edges, causes a certain bending stiffness of the electrical connection cable according to the invention, depending on the lateral overlap.
  • the edges of the cover band overlap widely from one turn to the next.
  • the overlap amounts to at least a quarter or more of the bandwidth of the envelope band.
  • the lateral overlapping of the shielding band is preferably narrow, which is to mean that the edges of this band overlap less than the edges of the banding band.
  • the respective lateral coverage of the Schirmbandes or the Hüllbandes be chosen arbitrarily.
  • the bandwidth of the Schirmbandes and the Hüllbandes can be chosen independently regardless.
  • the bonding of the shielding tape and / or the cover band of the connecting cable by means of a suitable adhesive which is applied to the insulated stranded conductor, the shielding sleeve, the shielding tape and / or the cover tape.
  • the adhesive can be applied in each case in advance and / or during the helical wrapping of the stranded conductor or of the wire bundle and / or of the film screen as dots, bead or layer.
  • an umbrella tape and / or a cover tape is used with an adhesive layer, which is advantageously applied in advance, so that the screen tape and / or the cover tape is self-adhesive.
  • the sheath band acts in the region of the transition of the shielding band to the shielding sleeve as kink protection, which can be improved at this point if the shroud is placed around the foil shield in the region of the transition of the shielding band to the shielding sleeve.
  • the electrical connection cable 1 with a flexible electrical line 2 and arranged at a first end 3 of the line 2 connector 4 is shown in a stretched form. Since the line 2, however, is only conditionally rigid, it can in principle be laid arbitrarily shaped.
  • the line 2 has a wire bundle 5 of insulated stranded conductors 6, a the film bundle 5 enclosing film screen 7 and the film screen 7 enveloping, the line 2 outwardly final protective cover 8.
  • the connector 4 has a connector housing 9 a metallic round housing with isolated recorded therein in the drawing not visible contacts and an integrally formed on the circular housing 9 shielding sleeve, with which the stranded conductor 6 and the film screen 7 are electrically connected.
  • the film screen 7 is formed by a plurality of successive turns 11 of an umbrella tape 12 and the protective cover 8 of a number of turns 13 of a cover strip 14.
  • the shielding strip 12 and the enveloping tape 14 are obliquely wound along the stranded conductors 6 laterally overlapping around the wire bundle 5 and the shielding sleeve 12.
  • the protective cover 8 overlaps the film screen 7 in its entire length.
  • the drawing shows the cover tape 14 not completely wound around the screen tape 12.
  • the electrical line 2 may also have at its second end 15 any electrical connector ,
  • the shielding tape 12 is glued to the wire bundle 5 and the shielding sleeve 10 and the enveloping tape 14 with the film screen 7 formed by the screen tape 12.
  • the shielding strip 12 and the enveloping tape 14 preferably have an adhesive layer not shown in the drawing.
  • the shielding strip 12 and the enveloping tape 14 are thus preferably self-adhesive.
  • the self-adhesive shielding tape 12 and the self-adhesive wrapping tape 14 allow a simple wrapping of the wire bundle 5 and the film screen 7.
  • the line 2 to the outside final protective cover 8 are wound in the same winding process and preferably in one step with the film screen 7.
  • the shielding strip 12 and the cover strip 14 are wound in the same direction in this embodiment in order to achieve the highest possible flexibility of the electrical line 2.
  • the shielding strip 12 and the enveloping tape 14 are equally wound starting from the shielding sleeve 10 of the round housing 9.

Abstract

The electrical connecting cable (1) has a flexible electrical line (2) and an electrical connector (4) at one line end (3). A wire bundle (5) is enclosed by a foil shield (7). The electrical connector is formed with a metallic connector housing (9) for electrical connection of the stranded conductors (6) or foil shield. The foil shield is formed with an electrically conductive shielding tape (12), and an electrically non-conductive band (14) is formed with a protective sheath (8) along stranded conductors and laterally overlapping around wire bundle and the shielding sleeve.

Description

Die Erfindung betrifft ein elektrisches Verbindungskabel, mit einer flexiblen elektrischen Leitung und mit mindestens einem elektrischen Steckverbinder an einem Leitungsende, wobei die elektrische Leitung ein Adernbündel aus isolierten Litzenleitern, einen das Adernbündel einschließenden Folienschirm sowie eine den Folienschirm umhüllende, die Leitung nach außen abschließende Schutzhülle aufweist und wobei der Steckverbinder ein metallisches Steckverbindergehäuse mit isoliert aufgenommenen Kontakten und eine angeformte Schirmhülse aufweist, mit denen die Litzenleiter bzw. der Folienschirm elektrisch leitend verbunden sind.The invention relates to an electrical connection cable with a flexible electrical line and at least one electrical connector at one end of the line, wherein the electrical line comprises a wire bundle of insulated stranded conductors, a film bundle enclosing the bundle of wires and a protective film enclosing the film screen, the conduit terminating outwards and wherein the connector comprises a metallic connector housing with isolated recorded contacts and a molded shielding sleeve, with which the stranded conductor or the film screen are electrically connected.

Derartige Kabel mit mindestens einem abgeschirmten Steckverbinder und mindestens zwei gemeinsam abgeschirmten elektrischen Adern aus isolierten Litzenleitern sind an sich als flexible Übertragungskabel in vielfältigen Ausführungsformen bekannt. Entsprechende Übertragungskabel werden unter anderem dazu verwendet, um bei elektrisch betriebenen Geräten mit einem Gehäuse eine von außen zugängige elektrische Schnittstelle an dem umgebenden Gehäuse bereitzustellen. Bei einer derartigen Verwendung ist der Steckverbinder an einem Durchbruch des Gehäuses in der Regel fixiert angeordnet, wobei die elektrische Leitung den Steckverbinder mit den in dem Gehäuse eingebauten Komponenten elektrisch verbindet.Such cables with at least one shielded connector and at least two jointly shielded electrical conductors of insulated stranded conductors are known per se as flexible transmission cables in various embodiments. Corresponding transmission cables are used inter alia to provide an externally accessible electrical interface to the surrounding housing in the case of electrically operated devices with a housing. In such a use, the connector is usually fixed to an opening of the housing, wherein the electrical line electrically connects the connector with the built-in components in the housing components.

Es ist auch bekannt derartige Verbindungskabel bei industrieüblichen Geräten im industriellen Umfeld, beispielsweise Steuergeräten oder dergleichen einzusetzen. Der industrielle Einsatz stellt erhöhte Anforderungen an die EMV-Störsicherheit. Um die Aussendung bzw. den Empfang elektromagnetischer Störfelder von stromdurchflossenen Leitungen zuverlässig zu verhindern, ist es gängig, elektrische Leitungen mit einer geerdeten Ummantelung, beispielsweise in Form eines leitfähigen Folienschirms zu umgeben und diesen durch einen übergreifenden den Folienschirm schützenden Schutzmantel einzuhüllen. Bei der Herstellung des Verbindungskabels erfolgt die mechanische und elektrische Verbindung der Litzenleiter mit den Kontakten gewöhnlich gemäß dem typischen Stand der Technik, d. h. in der Regel durch Klemmen, Löten oder Crimpen. Dabei reicht diese Art der Verbindung meist aus, um für die Übertragung von Zugkräften zu sorgen und um zu verhindern, dass die stromführenden Adern von den Kontakten abreißen. Eine besondere Zugentlastung ist somit normalerweise nicht nötig. Der Folienschirm ist dabei mit einer Schirmhülse des Gehäuses des elektrischen Steckverbinders in entsprechender Weise elektrisch und mechanisch verbunden.It is also known to use such connection cables in industry-standard devices in industrial environments, such as control devices or the like. Industrial use places increased demands on EMC interference immunity. In order to reliably prevent the transmission or reception of electromagnetic interference fields from current-carrying lines, it is common practice to surround electrical lines with a grounded sheath, for example in the form of a conductive foil screen, and envelop it by an overarching protective sheath protecting the foil shield. In the manufacture of the connection cable, the mechanical and electrical connection of the stranded conductors to the contacts is usually in accordance with the typical state of the art, i. H. usually by clamping, soldering or crimping. This type of connection is usually sufficient to provide for the transmission of tensile forces and to prevent the current-carrying wires from tearing off the contacts. A special strain relief is therefore usually not necessary. The film screen is electrically and mechanically connected to a shielding sleeve of the housing of the electrical connector in a corresponding manner.

Üblicherweise werden für die Herstellung solcher Verbindungskabel vorkonfektionierte elektrische Leitungen verwendet, die ein Adernbündel aus mindestens zwei isolierten Litzenleiter, einen das Adernbündel einschließenden Folienschirm sowie einen den Folienschirm umhüllenden, die Leitung nach außen abschließenden schlauchförmigen Schutzmantel aus Kunststoffmaterial aufweist. Ein Problem bei den verwendeten herkömmlichen abgelängten Leitungen besteht darin, dass sich der Folienschirm nur aufwändig an gängigen Steckverbindern befestigen lässt. Insbesondere lässt sich die meist mit den Isolierungen der Litzenleitern verklebte Abschirmung schwer durchschneiden ohne die Isolierung der Litzenleiter zu beschädigen. Außerdem muss der Folienschirm um ihn mit der Schirmhülse des Steckverbinders durch Crimpen automatisch zu verbinden, in der Regel über die Schutzhülle der elektrischen Leitung gelegt werden. Infolge dessen erhöht sich die Montagezeit und damit die Montagekosten. Ferner ist das Herstellen des elektrischen Verbindungskabels im allgemeinen ein zeitraubendes Verfahren und beschränkt die Geschwindigkeit, mit der das Kabel hergestellt werden kann. Außerdem verhindern neben der nicht vollautomatischen Herstellungsmöglichkeit auch die relativ hohen Stückkosten der vorkonfektionierten Leitung die Bereitstellung eines kostengünstigen Verbindungskabels.Usually prefabricated electrical lines are used for the production of such connecting cable, which has a wire bundle of at least two insulated stranded conductor, a foil bundle enclosing the wire bundle and the film screen enclosing the line to the outside final tubular protective jacket made of plastic material. A problem with the conventional cut-to-length lines used is that the film screen can be attached to conventional connectors only consuming. In particular, the usually glued with the insulation of the stranded conductors shield severely cut without damaging the insulation of the stranded conductor. In addition, the film screen to be connected to the shield sleeve of the connector by crimping automatically, must be placed usually on the protective cover of the electrical cable. As a result, increases the assembly time and thus the installation costs. Furthermore, producing the electrical connection cable is generally time consuming Method and limits the speed at which the cable can be made. In addition, in addition to the not fully automatic production possibility, the relatively high unit costs of the prefabricated line prevent the provision of a low-cost connection cable.

Ausgehend von dem vorstehend genannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein in betriebswirtschaftlicher und in fertigungstechnischer Sicht verbessertes gattungsgemäßes elektrisches Verbindungskabel vorzuschlagen, das für eine kostengünstige, insbesondere vollautomatische Massenproduktion geeignet ist und dennoch eine zuverlässige Verbindung ermöglicht.Based on the above-mentioned prior art, the present invention seeks to propose an improved in business management and in manufacturing technology generic generic electrical connection cable, which is suitable for a cost, especially fully automatic mass production and yet allows a reliable connection.

Diese Aufgabe wird erfindungsgemäß durch ein elektrisches Verbindungskabel mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Ausführungsformen des Verbindungskabels sind in den Merkmalen der abhängigen Ansprüche angegeben.This object is achieved by an electrical connection cable with the features of claim 1. Preferred embodiments of the connection cable are given in the features of the dependent claims.

Der Erfindung liegt der Kerngedanke zugrunde, anstelle einer vorkonfektionierten elektrischen Leitung, umfassend ein Adernbündel aus isolierten Litzenleitern, einen das Adernbündel einschließenden Folienschirm sowie einen den Folienschirm umhüllenden Schutzmantel, eine Anzahl von automatisch vorkonfektionierten isolierten Litzenleitern mit angeschlagenen Kontakten zu verwenden, diese nach dem Verbinden mit dem mindesten einen elektrischen Steckverbinder zu einem Adernbündel zu formen und anschließend vollautomatisch das Adernbündel mit dem Folienschirm einzuschließen und ebenso den Folienschirm mit einer Schutzhülle zu umhüllen.The invention is based on the core idea, instead of a prefabricated electrical line comprising a wire bundle of insulated stranded conductors, a film bundle enclosing the film bundle and the protective film enclosing the film screen to use a number of automatically prefabricated insulated stranded conductors with battered contacts, these after connecting with to form the at least one electrical connector to a wire bundle and then fully automatically enclose the wire bundle with the film screen and also to wrap the film screen with a protective cover.

Um dies zu ermöglichen, besteht bei dem erfindungsgemäßen elektrischen Verbindungskabel der Folienschirm aus mindestens einem Schirmband und die Schutzhülle aus einem Hüllband, die schräg entlang zu den Litzenleitern seitlich überlappend um das Adernbündel und die Schirmhülse spiralförmig gewickelt sind. Dabei können das Schirmband und das Hüllband zeitlich parallel oder seriell um das Adernbündel und um die an das metallische Steckverbindergehäuse, beispielsweise ein Rundgehäuse, angeformte Schirmhülse gewickelt sein. Dies beinhaltet, dass zuerst das Schirmband teilweise oder vollständig vorzugsweise in einem spitzen Winkel quer zu den Litzenleitern um das Adernbündel und die Schirmhülse gewickelt ist, bevor das Hüllband in gleicher Weise auf den Folienschirm aufgebracht wird. Prinzipiell kann auch das Schirmband mit dem Hüllband mit geringer seitlicher Überlappung zusammengeführt sein, bevor die Schirmhülse und das Adernbündel gleichzeitig mit diesem umwickelt werden.In order to make this possible, in the electrical connection cable according to the invention, the film screen consists of at least one shielding tape and the protective cover of a cover strip, which are spirally wound laterally to the stranded conductors laterally overlapping around the wire bundle and the shielding sleeve helically. In this case, the shielding band and the cover strip can be timed parallel or serially around the wire bundle and around the metallic plug connector housing, For example, be wrapped around a round housing, molded shielding sleeve. This implies that first the shielding tape is partially or completely preferably wound at an acute angle across the stranded conductors around the wire bundle and the shielding sleeve before the cover tape is applied in the same way to the film screen. In principle, the shielding band can also be brought together with the covering band with a small lateral overlap, before the shielding sleeve and the bundle of wires are simultaneously wrapped with it.

Das Schirmband kann aus einem einzigen Metall, beispielsweise Aluminium sein, aus einem Metallverbund beispielsweise aus verzinktem Kupfer oder aus einem Kunststoff-Metall-Laminat bestehen und ist mit spiralförmigen Windungen entlang den Litzenleitern um das Adernbündel und um die Schirmhülse gewickelt. Um eine ausreichende Flexibilität des Verbindungskabels zu erreichen, überlappen sich die Ränder des Schirmbandes dabei vorzugsweise schmal von einer Windung zu der anderen. Auf diese Weise ist nicht nur die elektrische Leitung sondern auch der Steckverbinder insbesondere am Übergang zwischen dem Adernbündel und seinem metallischen Gehäuse hinreichend abgeschirmt. Durch die so gebildete Abschirmung wird ein Signalverlust, Störungen durch Signalempfang von außen und Störungen des Umfeldes durch Signalaussendungen nach außen grundsätzlich verhindert. Es wird eine 100%ige Abschirmung der Litzenleiter und der mit den Litzenleitern verbundenen elektrischen Kontakte erreicht.The shielding band can be made of a single metal, for example aluminum, of a metal composite, for example of galvanized copper or of a plastic-metal laminate and is wound with helical windings along the stranded conductors around the wire bundle and around the shielding sleeve. In order to achieve sufficient flexibility of the connecting cable, the edges of the shielding tape preferably overlap narrowly from one turn to the other. In this way, not only the electrical line but also the connector is adequately shielded, in particular at the transition between the wire bundle and its metallic housing. By shielding thus formed a signal loss, interference from signal reception from the outside and disturbances of the environment by signal emissions to the outside is basically prevented. A 100% shielding of the stranded conductors and the electrical contacts connected to the stranded conductors is achieved.

Generell kann das elektrische Verbindungskabel mit dem Steckverbinder an einem Ende der elektrischen Leitung an dem anderen, diesem Steckverbinder fernen Ende der elektrischen Leitung entweder freie Litzenleiterenden mit oder ohne angeschlagene Kontaktelemente, einen beliebigen ungeschirmten Gruppenstecker oder einen schirmfähigen zweiten Steckverbinder aufweisen, der vorzugsweise ähnlich dem anderen ersten Steckverbinder ausgebildet ist. Es ist selbstverständlich, dass sich bei zwei schirmfähig ausgebildeten Steckverbindern der Kabelschirm und die Schutzhülle, die von den Windungen des Schirmbandes und des Hüllbandes gebildet sind, jeweils die Schirmhülsen der beiden metallischen Rundgehäuse übergreifen. Der Folienschirm kontaktiert in jedem Fall das mindestens eine metallische Rundgehäuse an der Schirmhülse mit geringem elektrischen Übergangswiderstand und bildet einen aus den Windungen des Schirmbandes zusammengesetzten schlauchförmigen Folienschirm. Die aus dem Hüllband gewickelte Schutzhülle des Verbindungskabels bildet einen schlauchförmigen Schutzmantel, der den Folienschirm vor Beschädigung und elektrischem Kontakt von außen schützt. Die Schutzhülle presst zudem das Adernbündel mit dem Folienschirm im Bereich der Litzenleiter und den Folienschirm im Bereich der an das metallische Rundgehäuse angeformten Schirmhülse.In general, the electrical connection cable with the connector at one end of the electrical lead at the other end of the electrical lead remote from that connector can have either free stranded conductor ends with or without attached contact elements, any unshielded group connector, or a shieldable second connector, preferably similar to the other first connector is formed. It is understood that in two shieldable formed connectors of the cable shield and the protective cover, which are formed by the turns of the shielding band and the Hüllbandes, respectively, the shielding sleeves of the two overlap metallic round housing. The foil screen contacted in any case, the at least one metallic round housing on the shielding sleeve with low electrical contact resistance and forms a composite of the turns of the shielding tape tubular film screen. The wrapped from the cover tape protective cover of the connecting cable forms a tubular protective jacket that protects the film screen from damage and electrical contact from the outside. The protective cover also presses the wire bundle with the film screen in the region of the stranded conductor and the film screen in the region of the screen sleeve formed on the metallic round housing.

Das Hüllband kann ein beliebiges flexibles Material aufweisen und ist idealerweise deutlich stärker in der Dicke als das Schirmband. Es ist elektrisch nicht leitend und übergreift den Folienschirm in seiner Länge vollständig in ähnlicher Weise wie das Schirmband das Adernbündel und die Schirmhülse. Das Hüllband ist idealerweise äußerst reiß- und abriebfest und vorzugsweise mit dem Folienschirm verklebt. Bei einer bevorzugten Ausführungsform der Erfindung ist zudem das Schirmband mit dem Adernbündel und der Schirmhülse verklebt. Das Hüllband kann beispielsweise eine Kunststofffolie oder ein Gewebe aus Kunststofffäden und/oder Textilfaserfäden oder einem sonstigen geeigneten Material aufweisen. Das Hüllband ist wie das Schirmband seitlich überlappend aufgewendelt, d. h. spiralförmig in Erstreckungsrichtung der Litzenleiter um den Folienschirm gewickelt. Das Hüllband, das schräg entlang dem Schirmband mit seitlich überlappenden Rändern gewickelt ist, bewirkt abhängig von der seitlichen Überlappung eine gewisse Biegesteifigkeit des erfindungsgemäßen elektrischen Verbindungskabels. Vorzugsweise überlappen sich die Ränder des Hüllbandes breit von einer Windung zu der nächsten. Unter breit wird dabei verstanden, dass die Überlappung mindestens ein Viertel oder mehr der Bandbreite des Hüllbandes beträgt. Vorstehend ist demgegenüber angegeben, dass die seitliche Überlappung des Schirmbandes vorzugsweise schmal ist, was bedeuten soll, dass die Ränder dieses Bandes sich geringer überlappen als die Ränder des Hüllbandes. Prinzipiell kann jedoch die jeweilige seitliche Überdeckung des Schirmbandes bzw. des Hüllbandes beliebig gewählt werden. Die Bandbreite des Schirmbandes und des Hüllbandes können dabei unabhängig voneinander beliebig gewählt werden.The wrapper may be of any flexible material and is ideally much thicker in thickness than the strap. It is electrically non-conductive and overlaps the film screen in its length completely in a similar manner as the screen tape the wire bundle and the shielding sleeve. The wrapper is ideally extremely tear and abrasion resistant and preferably glued to the foil screen. In a preferred embodiment of the invention, the shielding tape is also glued to the wire bundle and the shielding sleeve. The shroud, for example, a plastic film or a fabric of plastic threads and / or textile fiber threads or other suitable material. The shroud strip, like the shroud strip, is wound up laterally overlapping, ie spirally wound in the direction of extent of the stranded conductor around the foil shed. The cover band, which is wound obliquely along the screen band with laterally overlapping edges, causes a certain bending stiffness of the electrical connection cable according to the invention, depending on the lateral overlap. Preferably, the edges of the cover band overlap widely from one turn to the next. Broadly, it is understood that the overlap amounts to at least a quarter or more of the bandwidth of the envelope band. In contrast, it is stated above that the lateral overlapping of the shielding band is preferably narrow, which is to mean that the edges of this band overlap less than the edges of the banding band. In principle, however, the respective lateral coverage of the Schirmbandes or the Hüllbandes be chosen arbitrarily. The bandwidth of the Schirmbandes and the Hüllbandes can be chosen independently regardless.

Die Verklebung des Schirmbandes und/oder des Hüllbandes des Verbindungskabels erfolgt mittels eines geeigneten Klebstoffes, der auf die isolierten Litzenleiter, die Schirmhülse, das Schirmband und/oder das Hüllband appliziert ist. Der Kleber kann dabei jeweils vorab und/oder beim spiralförmigen Umwickeln der Litzenleiter bzw. des Adernbündels und/oder des Folienschirms als Punkte, Raupe oder Schicht aufgebracht sein. Vorzugsweise wird ein Schirmband und/oder ein Hüllband mit einer Klebstoffschicht verwendet, die vorteilhafterweise vorab aufgebracht ist, so dass das Schirmband und/oder das Hüllband selbstklebend ist.The bonding of the shielding tape and / or the cover band of the connecting cable by means of a suitable adhesive, which is applied to the insulated stranded conductor, the shielding sleeve, the shielding tape and / or the cover tape. The adhesive can be applied in each case in advance and / or during the helical wrapping of the stranded conductor or of the wire bundle and / or of the film screen as dots, bead or layer. Preferably, an umbrella tape and / or a cover tape is used with an adhesive layer, which is advantageously applied in advance, so that the screen tape and / or the cover tape is self-adhesive.

Für eine rationale Fertigung und eine geringe Biegesteifigkeit des vorgeschlagenen elektrischen Verbindungskabels hat es sich als günstig erwiesen, das Schirmband und das Hüllband gleichsinnig zu wickeln. Günstig ist es außerdem, die Wicklung an der gleichen Stelle zu beginnen. Besonders vorteilhaft ist es, das Schirmband und das Hüllband ausgehend von der Schirmhülse spiralförmig zu wickeln. Indem das Schirmband beginnend an der Schirmhülse gewickelt ist, übergreift jeweils die nachfolgende Windung die vorhergehende, so dass sich das Schirmband nicht unbeabsichtigt von der Schirmhülse lösen kann. Gleiches gilt für das Hüllband, das die Windungen des Folienschirms schützt und insbesondere im Bereich der Schirmhülse zusätzlich ein Abreißen des Folienschirms von der Schirmhülse wirkungsvoll verhindert. Das Hüllband wirkt im Bereich des Übergangs des Schirmbandes zu der Schirmhülse als Knickschutz, der an dieser Stelle verbessert werden kann, wenn das Hüllband im Bereich des Übergangs des Schirmbandes zu der Schirmhülse mehrfach um den Folienschirm herumgelegt wird.For a rational production and low bending stiffness of the proposed electrical connection cable, it has proven to be beneficial to wind the shielding tape and the cover strip in the same direction. It is also advantageous to start the winding in the same place. It is particularly advantageous to wind the shielding tape and the wrapping tape spirally starting from the shielding sleeve. By the shielding tape is wound starting on the shielding sleeve, each subsequent turn overlaps the previous, so that the shielding tape can not inadvertently come off the shielding sleeve. The same applies to the shroud, which protects the turns of the foil shield and in addition in the area of the shielding sleeve additionally effectively prevents tearing of the foil shield from the shielding sheath. The sheath band acts in the region of the transition of the shielding band to the shielding sleeve as kink protection, which can be improved at this point if the shroud is placed around the foil shield in the region of the transition of the shielding band to the shielding sleeve.

Zusammenfassend kann abschließend festgestellt werden, dass die Herstellung des erfindungsgemäßen elektrischen Verbindungskabels deutlich weniger material- und arbeitsintensiv ist als beim Stand der Technik und damit weitaus kostengünstiger.In conclusion, it can be concluded that the production of the electrical connection cable according to the invention is significantly less Material and labor intensive than in the prior art and thus much cheaper.

Nachfolgend wird die Erfindung anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels näher erläutert. Weitere Merkmale der Erfindung können sich aus der folgenden Beschreibung des Ausführungsbeispiels der Erfindung in Verbindung mit den Ansprüchen und der beigefügten Zeichnung ergeben. Die einzelnen Merkmale der Erfindung können für sich allein oder zu mehreren bei unterschiedlichen Ausführungsformen der Erfindung verwirklicht sein. Die einzige Figur der Zeichnung zeigt ein erfindungsgemäßes elektrisches Verbindungskabel in Seitenansicht, umfassend eine flexible elektrische Leitung und einen elektrischen Steckverbinder an einem Leitungsende.The invention will be explained in more detail with reference to an embodiment schematically illustrated in the drawing. Further features of the invention may be apparent from the following description of the embodiment of the invention in conjunction with the claims and the accompanying drawings. The individual features of the invention may be implemented on their own or in several different embodiments of the invention. The sole figure of the drawing shows an inventive electrical connection cable in side view, comprising a flexible electrical line and an electrical connector at a line end.

In der Zeichnung ist das erfindungsgemäße elektrische Verbindungskabel 1 mit einer flexiblen elektrischen Leitung 2 und einem an einem ersten Ende 3 der Leitung 2 angeordneten Steckverbinder 4 in gestreckter Form dargestellt. Da die Leitung 2 jedoch nur bedingt biegesteif ist, kann sie prinzipiell beliebig geformt verlegt werden. Die Leitung 2 weist ein Adernbündel 5 aus isolierten Litzenleitern 6 auf, einen das Adernbündel 5 einschließenden Folienschirm 7 sowie eine den Folienschirm 7 umhüllende, die Leitung 2 nach außen abschließende Schutzhülle 8. Der Steckverbinder 4 weist als Steckverbindergehäuse 9 ein metallisches Rundgehäuse mit darin isoliert aufgenommenen in der Zeichnung nicht sichtbaren Kontakten auf sowie eine an das Rundgehäuse 9 angeformte Schirmhülse, mit denen die Litzenleiter 6 bzw. der Folienschirm 7 elektrisch leitend verbunden sind.In the drawing, the electrical connection cable 1 according to the invention with a flexible electrical line 2 and arranged at a first end 3 of the line 2 connector 4 is shown in a stretched form. Since the line 2, however, is only conditionally rigid, it can in principle be laid arbitrarily shaped. The line 2 has a wire bundle 5 of insulated stranded conductors 6, a the film bundle 5 enclosing film screen 7 and the film screen 7 enveloping, the line 2 outwardly final protective cover 8. The connector 4 has a connector housing 9 a metallic round housing with isolated recorded therein in the drawing not visible contacts and an integrally formed on the circular housing 9 shielding sleeve, with which the stranded conductor 6 and the film screen 7 are electrically connected.

Der Folienschirm 7 ist von einer Vielzahl von aufeinanderfolgenden Windungen 11 eines Schirmbandes 12 und die Schutzhülle 8 von einer Anzahl von Windungen 13 eines Hüllbandes 14 gebildet. Das Schirmband 12 und das Hüllband 14 sind schräg entlang den Litzenleitern 6 seitlich überlappend um das Adernbündel 5 und die Schirmhülse 12 gewickelt. Dabei übergreift die Schutzhülle 8 den Folienschirm 7 in seiner gesamten Länge. Zur Sichtbarmachung des unter der Schutzhülle 8 angeordneten Folienschirms 7 zeigt die Zeichnung jedoch das Hüllband 14 nicht vollständig um das Schirmband 12 gewickelt.The film screen 7 is formed by a plurality of successive turns 11 of an umbrella tape 12 and the protective cover 8 of a number of turns 13 of a cover strip 14. The shielding strip 12 and the enveloping tape 14 are obliquely wound along the stranded conductors 6 laterally overlapping around the wire bundle 5 and the shielding sleeve 12. In this case, the protective cover 8 overlaps the film screen 7 in its entire length. For visualization of the film screen 7 arranged under the protective cover 8, however, the drawing shows the cover tape 14 not completely wound around the screen tape 12.

Dem Steckverbinder 4 gegenüberliegend weist das andere zweite Ende 15 der elektrischen Leitung 2 freie Enden 16 des Litzenleiters 6 auf. Dem zufolge endet der Folienschirm 7 und die den Folienschirm 7 nach außen abschließende Schutzhülle 8 vor dem zweiten Ende 15 der elektrischen Leitung 2. Anstelle der freien Enden 16 der Litzenleiter 6 kann die elektrische Leitung 2 auch an ihrem zweiten Ende 15 einen beliebigen elektrischen Steckverbinder aufweisen.The connector 4 opposite, the other second end 15 of the electrical line 2 free ends 16 of the stranded conductor 6 on. Accordingly, the film screen 7 and the foil shield 7 terminates outwardly protective cover 8 in front of the second end 15 of the electrical line 2. Instead of the free ends 16 of the stranded conductor 6, the electrical line 2 may also have at its second end 15 any electrical connector ,

Das Schirmband 12 ist mit dem Adernbündel 5 und der Schirmhülse 10 und das Hüllband 14 mit den von dem Schirmband 12 gebildeten Folienschirm 7 verklebt. Dazu weisen das Schirmband 12 und das Hüllband 14 vorzugsweise eine in der Zeichnung nicht dargestellte Klebstoffschicht auf. Das Schirmband 12 und das Hüllband 14 sind vorzugsweise somit selbstklebend ausgebildet. Das selbstklebende Schirmband 12 und das selbstklebende Hüllband 14 ermöglichen ein einfaches Umwickeln des Adernbündels 5 bzw. des Folienschirms 7. Zudem kann dadurch die die Leitung 2 nach außen abschließende Schutzhülle 8 im gleichen Wicklungsverfahren und vorzugsweise in einem Arbeitsschritt mit dem Folienschirm 7 gewickelt werden. Das Schirmband 12 und das Hüllband 14 sind in diesem Ausführungsbeispiel gleichsinnig gewickelt, um eine möglichst hohe Flexibilität der elektrischen Leitung 2 zu erreichen. Zudem sind das Schirmband 12 und das Hüllband 14 gleichermaßen ausgehend von der Schirmhülse 10 des Rundgehäuses 9 gewickelt.The shielding tape 12 is glued to the wire bundle 5 and the shielding sleeve 10 and the enveloping tape 14 with the film screen 7 formed by the screen tape 12. For this purpose, the shielding strip 12 and the enveloping tape 14 preferably have an adhesive layer not shown in the drawing. The shielding strip 12 and the enveloping tape 14 are thus preferably self-adhesive. The self-adhesive shielding tape 12 and the self-adhesive wrapping tape 14 allow a simple wrapping of the wire bundle 5 and the film screen 7. In addition, thereby the line 2 to the outside final protective cover 8 are wound in the same winding process and preferably in one step with the film screen 7. The shielding strip 12 and the cover strip 14 are wound in the same direction in this embodiment in order to achieve the highest possible flexibility of the electrical line 2. In addition, the shielding strip 12 and the enveloping tape 14 are equally wound starting from the shielding sleeve 10 of the round housing 9.

Claims (5)

Elektrisches Verbindungskabel (1), mit einer flexiblen elektrischen Leitung (2) und mit mindestens einem elektrischen Steckverbinder (4) an einem Leitungsende (3), wobei die elektrische Leitung (2) ein Adernbündel (5) aus isolierten Litzenleitern (6), einen das Adernbündel (5) einschließenden Folienschirm (7) sowie eine den Folienschirm (7) umhüllende, die Leitung (2) nach außen abschließende Schutzhülle (8) aufweist, und wobei der Steckverbinder (4) ein metallisches Steckverbindergehäuse (9), vorzugsweise ein Rundgehäuse, mit isoliert aufgenommenen Kontakten und eine angeformte Schirmhülse (10) aufweist, mit denen die Litzenleiter (6) bzw. der Folienschirm (7) elektrisch leitend verbunden sind, dadurch gekennzeichnet, dass der Folienschirm (7) aus mindestens einem elektrisch leitfähigen Schirmband (12) und die Schutzhülle (8) aus mindestens einem elektrisch nicht leitfähigen Hüllband (14) besteht, die schräg entlang den Litzenleitern (6) seitlich überlappend um das Adernbündel (5) und die Schirmhülse (10) spiralförmig gewickelt sind.Electrical connection cable (1), comprising a flexible electrical lead (2) and at least one electrical plug connector (4) at a lead end (3), said lead lead (2) comprising a stranded wire (5) made of insulated stranded leads (6) the film bundle (7) enclosing the wire bundle (5) and a protective cover (8) enclosing the film screen (7) and terminating the line (2) to the outside, and wherein the plug connector (4) is a metallic plug connector housing (9), preferably a round housing , with isolated recorded contacts and an integrally formed shielding sleeve (10), with which the stranded conductor (6) or the foil shield (7) are electrically conductively connected, characterized in that the foil shield (7) consists of at least one electrically conductive shielding strip (12 ) and the protective sheath (8) consists of at least one electrically non-conductive sheath band (14) which obliquely along the stranded conductors (6) laterally overlapping around the Ade Bundle (5) and the shielding sleeve (10) are spirally wound. Verbindungskabel nach Anspruch 1, dadurch gekennzeichnet, dass das Schirmband (12) mit dem Adernbündel (5) und der Schirmhülse (10) und/oder das Hüllband (14) mit dem von dem Schirmband (12) gebildeten Folienschirm (7) verklebt ist.Connecting cable according to claim 1, characterized in that the shielding strip (12) with the wire bundle (5) and the shielding sleeve (10) and / or the enveloping tape (14) is glued to the film screen (7) formed by the screen tape (12). Verbindungskabel nach Anspruch 2, dadurch gekennzeichnet, dass das Schirmband (12) und/oder das Hüllband (14) eine Klebstoffschicht aufweisen.Connecting cable according to claim 2, characterized in that the shielding strip (12) and / or the enveloping tape (14) have an adhesive layer. Verbindungskabel nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Schirmband (12) und das Hüllband (14) gleichsinnig gewickelt sind.Connecting cable according to one of the preceding claims, characterized in that the shielding strip (12) and the enveloping strip (14) are wound in the same direction. Verbindungskabel nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Schirmband (12) und/oder das Hüllband (14) ausgehend von der Schirmhülse (10) gewickelt sind.Connecting cable according to one of the preceding claims, characterized in that the shielding strip (12) and / or the shroud strip (14) are wound starting from the shielding sleeve (10).
EP11401621A 2010-11-02 2011-10-24 Electric connection cable Withdrawn EP2448074A1 (en)

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