EP2226899A1 - Device for connecting two electrical conductors - Google Patents

Device for connecting two electrical conductors Download PDF

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Publication number
EP2226899A1
EP2226899A1 EP09290132A EP09290132A EP2226899A1 EP 2226899 A1 EP2226899 A1 EP 2226899A1 EP 09290132 A EP09290132 A EP 09290132A EP 09290132 A EP09290132 A EP 09290132A EP 2226899 A1 EP2226899 A1 EP 2226899A1
Authority
EP
European Patent Office
Prior art keywords
fixing screw
tip
external thread
pipe section
holes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09290132A
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German (de)
French (fr)
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EP2226899B1 (en
Inventor
Gert Stauch
Volker Markgraf
Peter Grötsch
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.)
Nexans SA
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Nexans SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nexans SA filed Critical Nexans SA
Priority to ES09290132T priority Critical patent/ES2363195T3/en
Priority to EP09290132A priority patent/EP2226899B1/en
Priority to AT09290132T priority patent/ATE510326T1/en
Priority to US13/146,708 priority patent/US8267730B2/en
Priority to PCT/EP2010/051883 priority patent/WO2010097309A1/en
Publication of EP2226899A1 publication Critical patent/EP2226899A1/en
Application granted granted Critical
Publication of EP2226899B1 publication Critical patent/EP2226899B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/307—Clamped connections, spring connections utilising a screw or nut clamping member characterised by the thread of the screw or nut

Definitions

  • the invention relates to a device for connecting two electrical conductors, consisting of a designed as a piece of pipe metal clamp, which has in its wall at least two threaded through holes for receiving externally threaded clamping screws.
  • Such devices are known and available on the market. They are used, for example, for connecting the conductors of power cables, which are preferably made of copper or aluminum.
  • For fixing and contacting the conductor in the terminal clamping screws are used, which are designed for example as shear screws. The heads of such screws shear when reaching a certain moment, i. H. when reaching a sufficient contact force between the screw and the conductor.
  • the contact force generated by the clamping screws establishes the connection of the conductors to the terminal and the connection of the individual wires of the conductors with each other. It should be maintained throughout the required life of the device.
  • the electrical current flows in such a device from one conductor via the terminal to the other conductor with correspondingly relatively high contact resistance.
  • the invention has for its object to make the above-described device so that the electrically conductive connection between the two conductors to be joined can be permanently improved.
  • the two conductors are connected to this device in the terminal by the wedge-shaped tip of the fixing screw, which rests firmly against the end faces of the two conductors, directly and at least substantially without gap. A substantial portion of the current therefore flows through the advantageously wedge-shaped tip from one conductor to another.
  • the solid abutment of the tip on the end faces of the two conductors is ensured in particular by the fact that the tip is screwed into the opposite direction to the external thread of the fixing screw in the same.
  • the feed of the tip is thereby greater than the feed of the fixing itself. This ensures that the tip penetrates deep into the interior of the terminal and is pressed there between the end faces of the two conductors, without the pipe section of the terminal a must have particularly large wall thickness.
  • the contact force generated is high and there is a permanent current-carrying contact between the end faces of the two conductors and the tip.
  • the tip is preferably made of the same or a similar material as the conductors, the flow of current between the two conductors is further improved. Suitable materials are copper or aluminum as well as an aluminum alloy or brass.
  • a central through hole for receiving a provided with a tip fixing screw is present in the pipe section of the terminal at two diametrically opposite points. There may also be more than two, distributed in the circumferential direction of the terminal through holes for receiving fixing screws mounted in the same.
  • the rotatably arranged in the fixing screw tip should taper in the direction of its free end face and be preferably wedge-shaped. For the sake of simplicity, it will be referred to as "tip" in the following.
  • Fig. 1 is an existing example of a tinned aluminum alloy, designed as a pipe piece terminal 1 shown.
  • the clamp 1 has three threaded through-holes in each of which an externally threaded screw is arranged. These are each a clamping screw 2 in the two lateral through holes and a fixing screw 3 in the middle through hole, their more precise structure Fig. 5 evident.
  • the terminal 1 protrude from two different sides forth the electrical conductors 4 and 5 of two electrical cables 6 and 7, which are preferably energy cables.
  • the conductors 4 and 5 are with their end faces close to each other, in the amount of the central through hole for the fixing screw 3. They are executed in a preferred embodiment as Herdrähtige conductor and are advantageously made of aluminum or copper.
  • the conductors 4 and 5 can also be constructed of segments, in which each individual wires are combined. Such conductors are, for example, Milliken conductors.
  • the fixing screw 3 has according to Fig. 5 a screw head 8 and provided with an external thread screw body 9.
  • the screw body 9 has on its side facing away from the screw head 8 a provided with an internal thread recess 10 into which a provided with an external thread tip 11 is screwed.
  • the two external threads of the screw body 9 on the one hand and the tip 11 on the other hand are in opposite directions.
  • the tip 11 of the fixing screw 3 is advantageously made of the same or a metallically similar material as the conductors 4 and 5 to be joined. Suitable materials are copper and aluminum as well as aluminum alloys and brass.
  • the tip 11 can also consist of two, symmetrically separated from each other to their central axis materials, so that their one side, for example, made of copper and the other side made of aluminum or an aluminum alloy.
  • a fixing screw 3 with a tip 1 thus executed can be advantageous for connecting an aluminum conductor a copper conductor can be used. The required position of the tip 11 is set before tightening the fixing screw 3.
  • the surface of the tip 3 can also be structured. It can be roughened or equipped with a variety of small protrusions. Such a tip 11 has a slightly enlarged surface. It also results in the advance of the tip 11, a kind of milling effect, whereby the tight fit of the tip 11 is further increased at the ends of the two conductors 4 and 5.
  • the terminal 1 is equipped with two fixing screws 3, which are diametrically opposed in two central through holes. It can also be used more than two fixing screws 3, which are offset as well as the corresponding central through holes in the circumferential direction of the terminal 1 against each other.
  • Fig. 2 To produce a permanently effective electrically conductive connection between the conductors 4 and 5 are according to Fig. 2 first two fixing screws 3 screwed so far into the terminal 1 that their tips 11 protrude into the same. Also, the clamping screws 2, of which each side of the terminal 1 are also shown two diametrically opposite one another, can already be screwed into their through holes. But they do not protrude or only insignificantly into the terminal 1. Thereafter, the two conductors 4 and 5 are inserted into the terminal 1 until they hit the tips 11 of the two fixing screws 3. In this position, the conductors 4 and 5 are then tightened the clamping screws 2 to the tight fit, as it out Fig. 3 evident. Their heads are sheared off this end position of the clamping screws 2.
  • the fixing screw 3 is intended, for example, to cover a distance of 1.5 mm in one revolution.
  • the captured during the rotation of the fixing screw 3 tip 1 1 is additionally unscrewed from the recess 10 in this rotation about its opposite external thread. It puts, if it can not be rotated with the rotation of the fixing screw 3 from the beginning, the double way as the fixing screw 3 back. These are 3.0 mm for this example.

Abstract

The device comprises a metallic clamp (1) that is designed as a pipe section and comprises two through holes provided with a thread for receiving clamping screws (2) provided with an external thread, in its wall. In the pipe section of the clamp, a central through hole provided with a thread is furnished between the two through holes in order to receive a fixing screw (3) provided with an external thread, where the fixing screw has a tapered, approximately wedge-shaped tip (11), which lies rigidly against the end faces of two conductors (4, 5) inserted into the pipe section. The device comprises a metallic clamp (1) that is designed as a pipe section and comprises two through holes provided with a thread for receiving clamping screws (2) provided with an external thread, in its wall. In the pipe section of the clamp, a central through hole provided with a thread is furnished between the two through holes in order to receive a fixing screw (3) provided with an external thread, where the fixing screw has a tapered, approximately wedge-shaped tip (11), which lies rigidly against the end faces of two conductors (4, 5) inserted into the pipe section, in the assembled position. The tip provided with an external thread is screwed into a hole of the fixing screw provided with an internal thread. The external thread of the tip runs opposite to the external thread of the fixing screw. Two middle through-holes lying against diametral to each other for the reception of each fixing screw are arranged in the pipe section of the metallic clamp. The surface of the tip is structured.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Verbinden von zwei elektrischen Leitern, bestehend aus einer als Rohrstück ausgeführten metallischen Klemme, welche in ihrer Wandung mindestens zwei mit einem Gewinde versehene Durchgangslöcher zur Aufnahme von mit einem Außengewinde versehenen Klemmschrauben aufweist.The invention relates to a device for connecting two electrical conductors, consisting of a designed as a piece of pipe metal clamp, which has in its wall at least two threaded through holes for receiving externally threaded clamping screws.

Derartige Vorrichtungen sind bekannt und auf dem Markt erhältlich. Sie werden beispielsweise für die Verbindung der Leiter von Energiekabeln eingesetzt, die vorzugsweise aus Kupfer oder aus Aluminium bestehen. Zur Festlegung und Kontaktierung der Leiter in der Klemme werden Klemmschrauben verwendet, die beispielsweise als Abscherschrauben ausgeführt sind. Die Köpfe solcher Schrauben scheren beim Erreichen eines bestimmten Momentes, d. h. beim Erreichen einer genügend großen Kontaktkraft zwischen Schraube und Leiter ab.Such devices are known and available on the market. They are used, for example, for connecting the conductors of power cables, which are preferably made of copper or aluminum. For fixing and contacting the conductor in the terminal clamping screws are used, which are designed for example as shear screws. The heads of such screws shear when reaching a certain moment, i. H. when reaching a sufficient contact force between the screw and the conductor.

Die von den Klemmschrauben erzeugte Kontaktkraft stellt die Verbindung der Leiter mit der Klemme und die Verbindung der einzelnen Drähte der Leiter untereinander her. Sie soll während der gesamten geforderten Lebensdauer der Vorrichtung aufrecht erhalten bleiben. Der elektrische Strom fließt in einer solchen Vorrichtung von einem Leiter über die Klemme zum anderen Leiter mit entsprechend relativ hohen Übergangswiderständen.The contact force generated by the clamping screws establishes the connection of the conductors to the terminal and the connection of the individual wires of the conductors with each other. It should be maintained throughout the required life of the device. The electrical current flows in such a device from one conductor via the terminal to the other conductor with correspondingly relatively high contact resistance.

Bei mehrdrähtigen Leitern kommt hinzu, daß die einzelnen Drähte derselben beim durch das Anziehen der Klemmschraube bewirkten Verdichten aneinander reiben. Das führt dazu, daß im Innern der Leiter ein geringerer Druck erzeugt wird, als an der Oberfläche derselben. Bei der Verbindung von mehrdrähtigen Leitern mit großem Querschnitt bzw. bei segmentierten Leitern, sogenannten "Milliken Leitern", kann das zu Problemen führen. Wenn der Kontakt der Einzeldrähte im Innern der Leiter unzureichend ist, kommt es zu einer überdurchschnittlichen Erwärmung. Bei Leitern aus Aluminium führt die Erwärmung außerdem zu verstärktem Fließen des Materials und dadurch schon nach kurzer Zeit zu einem weiteren Rückgang des Kontaktdrucks. Die elektrische Verbindung zwischen den Leitern ist dann relativ schnell unbrauchbar.In multi-stranded conductors is added that the individual wires rubbing the same caused by tightening the clamping screw compressions together. As a result, a lower pressure is generated inside the conductor than at the surface thereof. In the connection of multi-stranded conductors with a large cross-section or segmented conductors, so-called "Milliken ladders", this can Cause problems. If the contact of the individual wires inside the conductor is insufficient, the heating will be above average. For aluminum ladders, the heating also leads to increased flow of the material and thus after a short time to a further decrease in contact pressure. The electrical connection between the conductors is then unusable relatively quickly.

Der Erfindung liegt die Aufgabe zugrunde, die eingangs geschilderte Vorrichtung so zu gestalten, daß die elektrisch leitende Verbindung zwischen den beiden zu verbindenden Leitern auf Dauer verbessert werden kann.The invention has for its object to make the above-described device so that the electrically conductive connection between the two conductors to be joined can be permanently improved.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst,

  • daß in dem Rohrstück der Klemme zwischen den beiden Durchgangslöchern mindestens ein mittleres, mit einem Gewinde versehenes Durchgangsloch zur Aufnahme einer mit einem Außengewinde versehenen Fixierschraube angebracht ist, welche eine sich verjüngende, etwa keilförmige Spitze hat, die in Montageposition fest an den Stirnseiten der beiden in das Rohrstück eingesteckten Leiter anliegt,
  • daß die mit einem Außengewinde versehene Spitze in eine mit einem Innengewinde versehene Ausnehmung der Fixierschraube eingeschraubt ist und
  • daß das Außengewinde der Spitze gegenläufig zum Außengewinde der Fixierschraube ausgeführt ist.
This object is achieved according to the invention characterized
  • that in the pipe section of the clamp between the two through holes at least a central, threaded through hole for receiving an externally threaded fixing screw is attached, which has a tapered, such as wedge-shaped tip in the mounting position fixed to the end faces of the two in the pipe piece is inserted inserted conductor,
  • that the provided with an external thread tip is screwed into a recess provided with an internal thread of the fixing screw and
  • that the external thread of the tip is executed in opposite directions to the external thread of the fixing screw.

Die beiden Leiter sind bei dieser Vorrichtung in der Klemme durch die keilförmige Spitze der Fixierschraube, welche fest an den Stirnseiten der beiden Leiter anliegt, direkt und zumindest im wesentlichen ohne Lücke miteinander verbunden. Ein wesentlicher Anteil des Stroms fließt daher über die mit Vorteil keilförmige Spitze von einem Leiter zum andern. Die feste Anlage der Spitze an den Stirnseiten der beiden Leiter wird insbesondere dadurch sichergestellt, daß die Spitze mit zum Außengewinde der Fixierschraube gegenläufigen Gewinde in dieselbe eingeschraubt ist. Beim Festziehen der Fixierschraube ist der Vorschub der Spitze dadurch größer als der Vorschub der Fixierschraube selbst. Dadurch ist gewährleistet, daß die Spitze tief in das Innere der Klemme eindringt und dort zwischen die Stirnseiten der beiden Leiter gepreßt wird, ohne daß das Rohrstück der Klemme eine besonders große Wandstärke haben muß.The two conductors are connected to this device in the terminal by the wedge-shaped tip of the fixing screw, which rests firmly against the end faces of the two conductors, directly and at least substantially without gap. A substantial portion of the current therefore flows through the advantageously wedge-shaped tip from one conductor to another. The solid abutment of the tip on the end faces of the two conductors is ensured in particular by the fact that the tip is screwed into the opposite direction to the external thread of the fixing screw in the same. When tightening the fixing screw, the feed of the tip is thereby greater than the feed of the fixing itself. This ensures that the tip penetrates deep into the interior of the terminal and is pressed there between the end faces of the two conductors, without the pipe section of the terminal a must have particularly large wall thickness.

Durch die bevorzugte Keilform der Spitze und durch eine niedrige Reibung ihres Gewindes, ist die erzeugte Kontaktkraft hoch und es entsteht ein dauerhaft stromtragfähiger Kontakt zwischen den Stirnseiten der beiden Leiter und der Spitze. Wenn die Spitze vorzugsweise aus dem gleichen oder einem ähnlichen Material wie die Leiter besteht, wird der Stromfluß zwischen den beiden Leitern weiter verbessert. Geeignete Materialien sind Kupfer oder Aluminium sowie eine Aluminiumlegierung oder Messing.Due to the preferred wedge shape of the tip and low friction of its thread, the contact force generated is high and there is a permanent current-carrying contact between the end faces of the two conductors and the tip. If the tip is preferably made of the same or a similar material as the conductors, the flow of current between the two conductors is further improved. Suitable materials are copper or aluminum as well as an aluminum alloy or brass.

In bevorzugter Ausführungsform ist im Rohrstück der Klemme an zwei einander diametral gegenüber liegenden Stellen je ein mittleres Durchgangsloch zur Aufnahme einer mit einer Spitze versehenen Fixierschraube vorhanden. Es können auch mehr als zwei, in Umfangsrichtung der Klemme verteilte Durchgangslöcher zur Aufnahme von Fixierschrauben in derselben angebracht sein.In a preferred embodiment, a central through hole for receiving a provided with a tip fixing screw is present in the pipe section of the terminal at two diametrically opposite points. There may also be more than two, distributed in the circumferential direction of the terminal through holes for receiving fixing screws mounted in the same.

Ein Ausführungsbeispiel des Erfindungsgegenstandes ist in den Zeichnungen dargestellt.An embodiment of the subject invention is shown in the drawings.

Es zeigen:

  • Fig. 1 einen Schnitt durch eine Vorrichtung nach der Erfindung in schematischer Darstellung.
  • Fig. 2 die Vorrichtung nach der Erfindung vor dem Festziehen der Schrauben ebenfalls im Schnitt.
  • Fig. 3 die Vorrichtung nach Fig. 2 nach dem Festziehen eines Teils der Schrauben.
  • Fig. 4 die Vorrichtung nach Fig. 2 nach dem Festziehen aller Schrauben.
  • Fig. 5 einen Schnitt durch eine in der Vorrichtung verwendbare Fixierschraube in vergrößerter Darstellung.
  • Fig. 6 eine Darstellung zur Erläuterung der Wirkungsweise der Fixierschraube.
Show it:
  • Fig. 1 a section through a device according to the invention in a schematic representation.
  • Fig. 2 the device according to the invention before tightening the screws also in section.
  • Fig. 3 the device after Fig. 2 after tightening a part of the screws.
  • Fig. 4 the device after Fig. 2 after tightening all screws.
  • Fig. 5 a section through a usable in the device fixing screw in an enlarged view.
  • Fig. 6 a representation for explaining the operation of the fixing screw.

In den Zeichnungen sind alle Schrauben als Abscherschrauben dargestellt, deren Köpfe nach dem Erreichen des gewünschten Festsitzes der Schrauben an den Leitern abscheren. Es können für die Vorrichtung nach der Erfindung aber auch normale, nicht abscherbare Schrauben eingesetzt werden.In the drawings, all screws are shown as shear screws whose heads shear after reaching the desired tightness of the screws on the ladders. It can be used for the device according to the invention but also normal, not peelable screws.

Die in der Fixierschraube drehbar angeordnete Spitze soll sich in Richtung ihrer freien Stirnseite verjüngen und vorzugsweise keilförmig ausgeführt sein. Sie wird im folgenden der Einfachheit halber nur als "Spitze" bezeichnet.The rotatably arranged in the fixing screw tip should taper in the direction of its free end face and be preferably wedge-shaped. For the sake of simplicity, it will be referred to as "tip" in the following.

In Fig. 1 ist eine beispielsweise aus einer verzinnten Aluminiumlegierung bestehende, als Rohrstück ausgeführte Klemme 1 dargestellt. Die Klemme 1 hat drei mit einem Gewinde versehene Durchgangslöcher, in denen jeweils eine mit einem Außengewinde versehene Schraube angeordnet ist. Es sind dies in den beiden seitlichen Durchgangslöchern je eine Klemmschraube 2 und im mittleren Durchgangsloch eine Fixierschraube 3, deren genauerer Aufbau aus Fig. 5 hervorgeht. In die Klemme 1 ragen von zwei unterschiedlichen Seiten her die elektrischen Leiter 4 und 5 zweier elektrischer Kabel 6 und 7 hinein, bei denen es sich vorzugsweise um Energiekabel handelt. Die Leiter 4 und 5 liegen mit ihren Stirnseiten nahe nebeneinander, und zwar in Höhe des mittleren Durchgangslochs für die Fixierschraube 3. Sie sind in bevorzugter Ausführungsform als mehrdrähtige Leiter ausgeführt und bestehen mit Vorteil aus Aluminium oder Kupfer. Die Leiter 4 und 5 können auch aus Segmenten aufgebaut sein, in denen jeweils Einzeldrähte derselben zusammengefaßt sind. Derartige Leiter sind beispielsweise Milliken-Leiter.In Fig. 1 is an existing example of a tinned aluminum alloy, designed as a pipe piece terminal 1 shown. The clamp 1 has three threaded through-holes in each of which an externally threaded screw is arranged. These are each a clamping screw 2 in the two lateral through holes and a fixing screw 3 in the middle through hole, their more precise structure Fig. 5 evident. In the terminal 1 protrude from two different sides forth the electrical conductors 4 and 5 of two electrical cables 6 and 7, which are preferably energy cables. The conductors 4 and 5 are with their end faces close to each other, in the amount of the central through hole for the fixing screw 3. They are executed in a preferred embodiment as mehrdrähtige conductor and are advantageously made of aluminum or copper. The conductors 4 and 5 can also be constructed of segments, in which each individual wires are combined. Such conductors are, for example, Milliken conductors.

Die Fixierschraube 3 hat gemäß Fig. 5 einen Schraubenkopf 8 und einen mit einem Außengewinde versehenen Schraubenkörper 9. Der Schraubenkörper 9 weist auf seiner dem Schraubenkopf 8 abgewandten Seite eine mit einem Innengewinde versehene Ausnehmung 10 auf, in welche eine mit einem Außengewinde versehene Spitze 11 eingeschraubt ist. Die beiden Außengewinde des Schraubenkörpers 9 einerseits und der Spitze 11 andererseits sind gegenläufig.The fixing screw 3 has according to Fig. 5 a screw head 8 and provided with an external thread screw body 9. The screw body 9 has on its side facing away from the screw head 8 a provided with an internal thread recess 10 into which a provided with an external thread tip 11 is screwed. The two external threads of the screw body 9 on the one hand and the tip 11 on the other hand are in opposite directions.

Die Spitze 11 der Fixierschraube 3 besteht mit Vorteil aus dem gleichen oder einem metallisch ähnlichen Material, wie die zu verbindenden Leiter 4 und 5. Geeignete Materialien sind Kupfer und Aluminium sowie Aluminiumlegierungen und Messing. Die Spitze 11 kann auch aus zwei, symmetrisch zu ihrer Mittelachse voneinander getrennten Materialien bestehen, so daß ihre eine Seite beispielsweise aus Kupfer und die andere Seite aus Aluminium bzw. einer Aluminiumlegierung besteht. Eine Fixierschraube 3 mit einer so ausgeführten Spitze 1 kann mit Vorteil zum Verbinden eines Aluminiumleiters mit einem Kupferleiter eingesetzt werden. Die dazu erforderliche Position der Spitze 11 wird vor dem Festziehen der Fixierschraube 3 eingestellt.The tip 11 of the fixing screw 3 is advantageously made of the same or a metallically similar material as the conductors 4 and 5 to be joined. Suitable materials are copper and aluminum as well as aluminum alloys and brass. The tip 11 can also consist of two, symmetrically separated from each other to their central axis materials, so that their one side, for example, made of copper and the other side made of aluminum or an aluminum alloy. A fixing screw 3 with a tip 1 thus executed can be advantageous for connecting an aluminum conductor a copper conductor can be used. The required position of the tip 11 is set before tightening the fixing screw 3.

Die Oberfläche der Spitze 3 kann auch strukturiert sein. Sie kann dazu aufgerauht oder mit einer Vielzahl kleiner Vorsprünge ausgerüstet sein. Eine solche Spitze 11 hat eine etwas vergrößerte Oberfläche. Es ergibt sich beim Vorschub der Spitze 11 außerdem eine Art Fräseffekt, wodurch der Festsitz der Spitze 11 an den Stirnseiten der beiden Leiter 4 und 5 weiter erhöht wird.The surface of the tip 3 can also be structured. It can be roughened or equipped with a variety of small protrusions. Such a tip 11 has a slightly enlarged surface. It also results in the advance of the tip 11, a kind of milling effect, whereby the tight fit of the tip 11 is further increased at the ends of the two conductors 4 and 5.

Die Handhabung der Vorrichtung nach der Erfindung wird anhand der Fig. 2 bis 6 beispielsweise erläutert:The handling of the device according to the invention will be described with reference to Fig. 2 to 6 for example:

In dem in den Fig. 2 bis 4 dargestellten Ausführungsbeispiel ist die Klemme 1 mit zwei Fixierschrauben 3 ausgerüstet, die in zwei mittleren Durchgangslöchern einander diametral gegenüber liegen. Es können auch mehr als zwei Fixierschrauben 3 eingesetzt sein, die ebenso wie die entsprechenden mittleren Durchgangslöcher in Umfangsrichtung der Klemme 1 gegeneinander versetzt sind.In the in the Fig. 2 to 4 illustrated embodiment, the terminal 1 is equipped with two fixing screws 3, which are diametrically opposed in two central through holes. It can also be used more than two fixing screws 3, which are offset as well as the corresponding central through holes in the circumferential direction of the terminal 1 against each other.

Zur Herstellung einer auf Dauer wirksamen elektrisch leitenden Verbindung zwischen den Leitern 4 und 5 werden gemäß Fig. 2 zunächst zwei Fixierschrauben 3 so weit in die Klemme 1 eingeschraubt, daß ihre Spitzen 11 in dieselbe hineinragen. Auch die Klemmschrauben 2, von denen pro Seite der Klemme 1 ebenfalls zwei einander diametral gegenüber liegende dargestellt sind, können bereits in ihre Durchgangslöcher eingeschraubt sein. Sie ragen dann aber nicht oder nur unwesentlich in die Klemme 1 hinein. Danach werden die beiden Leiter 4 und 5 in die Klemme 1 eingeschoben, bis sie an die Spitzen 11 der beiden Fixierschrauben 3 stoßen. In dieser Position der Leiter 4 und 5 werden dann die Klemmschrauben 2 bis zum Festsitz angezogen, so wie es aus Fig. 3 hervorgeht. Ihre Köpfe sind dieser Endposition der Klemmschrauben 2 abgeschert.To produce a permanently effective electrically conductive connection between the conductors 4 and 5 are according to Fig. 2 first two fixing screws 3 screwed so far into the terminal 1 that their tips 11 protrude into the same. Also, the clamping screws 2, of which each side of the terminal 1 are also shown two diametrically opposite one another, can already be screwed into their through holes. But they do not protrude or only insignificantly into the terminal 1. Thereafter, the two conductors 4 and 5 are inserted into the terminal 1 until they hit the tips 11 of the two fixing screws 3. In this position, the conductors 4 and 5 are then tightened the clamping screws 2 to the tight fit, as it out Fig. 3 evident. Their heads are sheared off this end position of the clamping screws 2.

Nachdem die Leiter 4 und 5 - wie beschrieben - durch die Klemmschrauben 2 in der Klemme 1 unverrückbar festgelegt sind, werden die Fixierschrauben 3 angezogen. Ihre Spitzen 11 dringen dabei in den Spalt zwischen den Stirnseiten der beiden Leiter 4 und 5 ein, und zwar mit einem gegenüber dem Weg, welchen die Fixierschrauben 3 durch ihre Drehung zurücklegen, längeren Weg. In ihren aus Fig. 4 hervorgehenden Endpositionen liegen die beiden Spitzen 11 fest an beiden Leitern 4 und 5 an. Der zwischen denselben vorher bestehende Spalt, in welchen die Spitzen 11 durch die Drehung der Fixierschrauben 3 gepreßt werden, ist abschließend durch die Spitzen 11 im wesentlichen verschlossen. Die Schraubenköpfe 8 der Fixierschrauben 3 sind ebenfalls abgeschert.After the conductors 4 and 5 - as described - are fixed immovably by the clamping screws 2 in the terminal 1, the fixing screws 3 are tightened. Their tips 11 penetrate into the gap between the end faces of the two conductors 4 and 5 a, with a relation to the path which the fixing screws 3 cover by their rotation, longer way. In her out Fig. 4 Emerging end positions are the two tips 11 firmly on both conductors 4 and 5 at. The gap between them, in which the tips 11 are pressed by the rotation of the fixing screws 3, is finally closed by the tips 11 substantially. The screw heads 8 of the fixing screws 3 are also sheared off.

Der gegenüber den Fixierschrauben 3 bei einer Drehung derselben größere Vorschub ihrer Spitzen 11 wird durch die gegenläufigen Außengewinde des Schraubenkörpers 9 einerseits und der Spitzen 11 andererseits bewirkt. Voraussetzung für diesen längeren Verstellweg der Spitzen 11 ist, daß dieselben beim Festziehen der Fixierschrauben 3 nicht mitgedreht werden. Das ist bei Einsatz dieser Vorrichtung dann sichergestellt, wenn die beiden Leiter 4 und 5 an den Spitzen 11 fest genug anliegen und dadurch eine Drehung derselben verhindern.The relative to the fixing screws 3 at a rotation of the same greater feed their tips 11 is caused by the opposite external thread of the screw body 9 on the one hand and the tips 11 on the other. Prerequisite for this longer adjustment of the tips 11 is that the same when tightening the fixing screws 3 are not rotated. This is ensured when using this device, when the two conductors 4 and 5 rest firmly enough at the tips 11 and thereby prevent rotation of the same.

Der bei der Drehung einer Fixierschraube 3 größere Weg der Spitze 11 gegenüber der Fixierschraube 3 selbst, wird anhand von Fig. 5 an einem Beispiel erläutert:The greater in the rotation of a fixing screw 3 way the tip 11 relative to the fixing screw 3 itself, is based on Fig. 5 explained by an example:

Die Fixierschraube 3 soll bei einer Umdrehung beispielsweise einen Weg von 1,5 mm zurücklegen. Die bei der Drehung der Fixierschraube 3 festgehaltene Spitze 1 1 wird bei dieser Drehung über ihr gegenläufiges Außengewinde zusätzlich aus der Ausnehmung 10 herausgedreht. Sie legt, wenn sie bei der Drehung der Fixierschraube 3 von Anfang an nicht mit gedreht werden kann, den doppelten Weg wie die Fixierschraube 3 zurück. Das sind für dieses Beispiel 3,0 mm.The fixing screw 3 is intended, for example, to cover a distance of 1.5 mm in one revolution. The captured during the rotation of the fixing screw 3 tip 1 1 is additionally unscrewed from the recess 10 in this rotation about its opposite external thread. It puts, if it can not be rotated with the rotation of the fixing screw 3 from the beginning, the double way as the fixing screw 3 back. These are 3.0 mm for this example.

Claims (3)

Vorrichtung zum Verbinden von zwei elektrischen Leitern, bestehend aus einer als Rohrstück ausgeführten metallischen Klemme, welche in ihrer Wandung mindestens zwei mit einem Gewinde versehene Durchgangslöcher zur Aufnahme von mit einem Außengewinde versehenen Klemmschrauben aufweist, dadurch gekennzeichnet - daß in dem Rohrstück der Klemme (1) zwischen den beiden Durchgangslöchern mindestens ein mittleres, mit einem Gewinde versehenes Durchgangsloch zur Aufnahme einer mit einem Außengewinde versehenen Fixierschraube (3) angebracht ist, welche eine sich verjüngende, etwa keilförmige Spitze (11) hat, die in Montageposition fest an den Stirnseiten der beiden in das Rohrstück eingesteckten Leiter (4,5) anliegt, - daß die mit einem Außengewinde versehene Spitze (11) in eine mit einem Innengewinde versehene Ausnehmung (10) der Fixierschraube (3) eingeschraubt ist und - daß das Außengewinde der Spitze (1) gegenläufig zum Außengewinde der Fixierschraube (3) ausgeführt ist. Device for connecting two electrical conductors, consisting of a metallic clamp designed as a tubular piece, which has in its wall at least two threaded through holes for receiving externally threaded clamping screws, characterized in that in the pipe section of the clamp (1) between the two through holes at least a central, threaded through hole for receiving an externally threaded fixing screw (3) is mounted, which has a tapered, such as wedge-shaped tip (11), in the mounting position firmly against the end faces of the two inserted into the pipe section conductor (4,5), - That provided with an external thread tip (11) is screwed into a recess provided with an internal thread (10) of the fixing screw (3) and - That the external thread of the tip (1) is designed opposite to the external thread of the fixing screw (3). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß im Rohrstück der Klemme (1) zwei einander diametral gegenüber liegende mittlere Durchgangslöcher zur Aufnahme je einer Fixierschraube (3) angebracht sind.Apparatus according to claim 1, characterized in that in the pipe section of the clamp (1) has two diametrically opposite central through holes for receiving a respective fixing screw (3) are mounted. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Oberfläche der Spitze strukturiert ist.Apparatus according to claim 1, characterized in that the surface of the tip is structured.
EP09290132A 2009-02-25 2009-02-25 Device for connecting two electrical conductors Active EP2226899B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES09290132T ES2363195T3 (en) 2009-02-25 2009-02-25 DEVICE FOR THE EMPALME OF TWO ELECTRIC CONDUCTORS.
EP09290132A EP2226899B1 (en) 2009-02-25 2009-02-25 Device for connecting two electrical conductors
AT09290132T ATE510326T1 (en) 2009-02-25 2009-02-25 DEVICE FOR CONNECTING TWO ELECTRICAL CONDUCTORS
US13/146,708 US8267730B2 (en) 2009-02-25 2010-02-16 Device for connecting two electrical conductors
PCT/EP2010/051883 WO2010097309A1 (en) 2009-02-25 2010-02-16 Device for connecting two electrical conductors

Applications Claiming Priority (1)

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EP09290132A EP2226899B1 (en) 2009-02-25 2009-02-25 Device for connecting two electrical conductors

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EP2226899A1 true EP2226899A1 (en) 2010-09-08
EP2226899B1 EP2226899B1 (en) 2011-05-18

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US (1) US8267730B2 (en)
EP (1) EP2226899B1 (en)
AT (1) ATE510326T1 (en)
ES (1) ES2363195T3 (en)
WO (1) WO2010097309A1 (en)

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RU2495519C1 (en) * 2011-02-08 2013-10-10 Нексан System with metal terminal in form of pipe section
EP2683034A1 (en) * 2012-07-02 2014-01-08 Nexans Method for a connection conducting electricity between the electricity conductors of two electrical units
DE102014008756A1 (en) 2014-06-12 2015-12-17 Pfisterer Kontaktsysteme Gmbh Device for contacting an electrical conductor and connection or connection device with such a device
EP2999054A1 (en) * 2014-09-22 2016-03-23 Tyco Electronics Simel S.A.S. Binding screw for a wire connection assembly and wire connection assembly
DE102015005993B3 (en) * 2015-05-08 2016-05-25 Nkt Cables Gmbh & Co. Kg Method for connecting high-voltage cables to stranded conductors
WO2020115082A1 (en) * 2018-12-03 2020-06-11 Pfeifer Holding Gmbh & Co. Kg Current conducting arrangement, concrete component, method and use
EP4167384A1 (en) * 2021-10-14 2023-04-19 TE Connectivity Solutions GmbH Cable connectors and cable connector systems and methods including same

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CN103541606B (en) * 2012-07-09 2016-05-04 山西全安新技术开发有限公司 A kind of two anti-locking devices of tie down screw and method of tie down screw thereof of being used for
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KR20160109823A (en) * 2015-03-13 2016-09-21 엘에스전선 주식회사 Shear bolt
CN104876124B (en) * 2015-04-23 2017-08-08 山东莱钢建设有限公司 A kind of method for the slide-wire guide rails that continue, the type that continues slide-wire guide rails
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WO2019070369A1 (en) * 2017-10-03 2019-04-11 Carbine Ventures, Inc. Enhancing connectability among conductor elements
CN108010327A (en) * 2017-11-28 2018-05-08 深圳市贝优通新能源技术开发有限公司 A kind of electric police grasp shoot system for being easily installed dismounting for traffic administration

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RU2495519C1 (en) * 2011-02-08 2013-10-10 Нексан System with metal terminal in form of pipe section
EP2498338A1 (en) 2011-03-11 2012-09-12 Nexans Clamping screw
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EP2683034A1 (en) * 2012-07-02 2014-01-08 Nexans Method for a connection conducting electricity between the electricity conductors of two electrical units
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EP2999054A1 (en) * 2014-09-22 2016-03-23 Tyco Electronics Simel S.A.S. Binding screw for a wire connection assembly and wire connection assembly
CN107112645A (en) * 2014-09-22 2017-08-29 泰科电子斯麦尔公司 Trip bolt and electric wire connection component for electric wire connection component
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DE102015005993B3 (en) * 2015-05-08 2016-05-25 Nkt Cables Gmbh & Co. Kg Method for connecting high-voltage cables to stranded conductors
WO2020115082A1 (en) * 2018-12-03 2020-06-11 Pfeifer Holding Gmbh & Co. Kg Current conducting arrangement, concrete component, method and use
EP4167384A1 (en) * 2021-10-14 2023-04-19 TE Connectivity Solutions GmbH Cable connectors and cable connector systems and methods including same

Also Published As

Publication number Publication date
US8267730B2 (en) 2012-09-18
US20120021634A1 (en) 2012-01-26
WO2010097309A1 (en) 2010-09-02
ATE510326T1 (en) 2011-06-15
EP2226899B1 (en) 2011-05-18
ES2363195T3 (en) 2011-07-26

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