EP0083738B1 - Electrical cable junction unit equipped with cutting terminals - Google Patents

Electrical cable junction unit equipped with cutting terminals Download PDF

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Publication number
EP0083738B1
EP0083738B1 EP82111362A EP82111362A EP0083738B1 EP 0083738 B1 EP0083738 B1 EP 0083738B1 EP 82111362 A EP82111362 A EP 82111362A EP 82111362 A EP82111362 A EP 82111362A EP 0083738 B1 EP0083738 B1 EP 0083738B1
Authority
EP
European Patent Office
Prior art keywords
cable
screw cap
carrier body
recesses
terminals
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.)
Expired
Application number
EP82111362A
Other languages
German (de)
French (fr)
Other versions
EP0083738A3 (en
EP0083738A2 (en
Inventor
Josef Stebegg
Gerhart Becke
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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DE19813150568 external-priority patent/DE3150568C1/en
Priority claimed from DE19823220006 external-priority patent/DE3220006C1/en
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT82111362T priority Critical patent/ATE26043T1/en
Publication of EP0083738A2 publication Critical patent/EP0083738A2/en
Publication of EP0083738A3 publication Critical patent/EP0083738A3/en
Application granted granted Critical
Publication of EP0083738B1 publication Critical patent/EP0083738B1/en
Expired legal-status Critical Current

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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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
    • H01R4/2425—Flat plates, e.g. multi-layered flat plates
    • H01R4/2429—Flat plates, e.g. multi-layered flat plates mounted in an insulating base
    • H01R4/2433—Flat plates, e.g. multi-layered flat plates mounted in an insulating base one part of the base being movable to push the cable into the slot
    • 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • H01R4/2412—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation actuated by insulated cams or wedges

Definitions

  • the invention relates to a cable connection element of the type specified in the preamble of claims 1 and 5.
  • Such cable connection elements which are fixed or pluggable with electrical devices serve to releasably connect the electrical connection points of such a device to the individual wires of an electrical cable in an electrically conductive manner.
  • a cable connector of this type is known from US-A-3 980 380.
  • the main disadvantage of this is that the support body, which is provided with insulation displacement terminals, is equipped with recesses into which the cable cores of a multi-core electrical cable have to be inserted, which presupposes that they have to be brought into a corresponding geometric arrangement before being inserted.
  • Another disadvantage is the fact that the pressing of the cable wires into the insulation displacement connectors for the purpose of contacting with the aid of spring clips through the jacket body requires considerable effort.
  • the invention has for its object to take advantage of the basic advantages of an insulation displacement connection, especially in the case of connecting elements with multiple electrodes, in such a way that the time and effort required to establish the cable connection can be reduced to a minimum without impairing operational reliability.
  • the pressing-in process can be designed by evenly exerting pressure on the cable ends to be pressed in so that even relatively thin stranded wires can be pressed into the insulation-piercing terminals without risk of kinking.
  • the cylindrical cable connection element shown in Fig. 1 is formed from a screw-like support body 1 with a rectangular thread 2 and a sleeve-shaped union nut 3 made of insulating material with a corresponding internal thread for screwing onto the support body 1 and with the sealing and strain relief rings 4 made of elastic material arranged between the two.
  • the union nut 3 has the shape of a sleeve open on one side and is dimensioned such that it completely covers the supporting body 1 in the cut state and axially projects beyond the insertion side by such an amount that a cavity for accommodating the rings 4 for cable strain relief and sealing is created.
  • the closed end face of the union nut 3 facing away from the support body 1 is provided with a bead 5 which closes the union nut 3 except for an opening 6 for the passage of the cable 7 (FIG. 2).
  • the support body 1 is fixedly connected to a device 8 at its end opposite the insertion side.
  • the support body 1 has, from its insertion-side end face to the device-side end, axially extending, symmetrically arranged, outwardly open groove-shaped recesses 9, 10, 11, 12 with a rectangular cross section for receiving insulation displacement clamps 13, 14, 15, 16.
  • These recesses are designed such that one of their walls is arranged in a plane of diameter and the opposite wall of the recess in question, which extends parallel to the former, is radially offset at a distance from the insulation displacement connector.
  • the insulation displacement connectors 13, 14, 15, 16 electrically connected to the respective device connection are arranged, as shown in FIG. 3, in the recesses 9, 10, 11, 12 respectively assigned to them in such a way that their broad sides extending transversely to the clamping notch, in cross-sectional planes axially offset with respect to the thread pitch lying in the middle, between the entry-side end face and the device-side end of the support body 1 with its apex surface, protrude into the thread crest.
  • the cable core located in the respective recess is first placed on the fanned-out outer edge of the cutting notch of the relevant insulation piercing terminal.
  • the cable core thus laid is pressed into the cutting notch with the aid of the union nut 3.
  • the thread as can be seen in FIG. 2, is designed in such a way that the effective thread height, which corresponds approximately to the maximum diameter of the cable core, at the end of the device, starting from the thread base, gradually increasing to the height of the thread comb during the first threads.
  • the resulting force Pd must now point at least approximately in the direction of the cutting notch, so that the cable core cannot be sheared off on the front edge of the respective cutting terminal , but slides into the cutting notch.
  • This is achieved in the simplest way in that the recesses and thus also the insulation displacement clamps are arranged radially offset with respect to the diameter axes with the cutting notches parallel to these but in the direction of rotation of the union nut by half the width of the recess.
  • the seal 4 for strain relief of the cable 7 and for protection against the ingress of dust and moisture into the connecting element in the cable-side cavity of the union nut is screwed on the union nut 3 on the support body 1, as shown in FIG. 2, by the bead 5 the union nut 3 in the insertion area of the cable 7 against its surface and against the end face of the support body 1.
  • the union nut 3 rests dust and moisture-tight on an O-ring 21 made of elastic material and inserted into a groove of the supporting body 1 on the device.
  • the cable connection element according to the invention is designed as a cable sleeve for connecting two cable ends or as a T-piece for connecting two cables to one device.
  • the corresponding cable connection element described above is also made of a screw-like support body 22 with the thread 23, which can be a normal metric thread, for example M14, and the sleeve-shaped cap nut 3 with a corresponding internal thread for screwing onto the support body 22 and with formed between the two pressure body 24 made of elastic material.
  • the union nut 3 has the shape already described of a sleeve open on one side and is in turn dimensioned such that it completely covers the supporting body 22 in the screwed-on state and projects axially on the insertion side by an amount such that a cavity for accommodating the pressure body 24 instead of the rings 4 (Fig. 1) arises.
  • the support body 22 is fixedly connected to the device 8 at its end opposite the insertion side.
  • the support body 22 has from its insertion-side end face to the device-side end axially extending, symmetrically arranged, outwardly open groove-shaped recesses 25, 26, 27 with an approximately rectangular cross-section for receiving the insulation displacement clamps 28, 29, 30. These recesses are coaxially symmetrical in the support body 22 embedded.
  • the insulation displacement connectors 28, 29, 30, which are electrically connected to the respective device connection, are arranged in the recesses 25, 26, 27 assigned to them in accordance with the illustration in FIG finally extend radially outwards in the middle between the entry-side end face and the device-side end of the support body 22 with the threaded foot.
  • the pressure body 24 is annular so that its outer diameter approximately corresponds to the inner diameter of the union nut 3 and its inner diameter approximately corresponds to the outer diameter of the cable 7 to be inserted.
  • the pressure body At its end facing away from the support body 22, the pressure body is feathered, so that after the union nut 3 has been screwed on, its inner wall, which tapers conically towards the cable entry side, can be compressed by such an amount that it presses the elastic ring 31 against the cable and relieves it of strain .
  • the pressure body 24 Towards the support body, the pressure body 24 is provided with fingers 32, 33, 34 which are elastic in the radial direction and are of such a length that they are in the abutting state of the pressure body 24 on the end face of the support body 1 above the insulation displacement terminals 28, 29, 30, the ends the fingers 32, 33, 34 are shaped so that they can be pressed in elastically by a certain amount.
  • the thread of the union nut 3 as shown in FIGS.
  • the union nut 3 rests on the device side on the elastic 0-ring 36 embedded in the support body 22 and on the insertion side on the elastic 0-ring 37 inserted in the pressure body 24, so that the interior of the connecting element prevents the ingress of dust and moisture is protected.
  • the special design of the pressure body 24 ensures that even very flexible cable cores are pressed perfectly into the clamping notches by its fingers 32, 33, 34, so that excellent electrical contacting can also be produced in this case.

Description

Die Erfindung betrifft ein Kabelanschlußelement der im Oberbegriff der Ansprüche 1 und 5 näher bezeichneten Art.The invention relates to a cable connection element of the type specified in the preamble of claims 1 and 5.

Solche mit elektrischen Geräten fest oder steckbar verbundenen Kabelanschlußelemente dienen dazu, die elektrischen Anschlußpunkte eines solchen Gerätes mit den einzelnen Adern eines Elektrokabels lösbar elektrisch leitend zu verbinden.Such cable connection elements which are fixed or pluggable with electrical devices serve to releasably connect the electrical connection points of such a device to the individual wires of an electrical cable in an electrically conductive manner.

Ein Kabelanschlußelement dieser Art ist aus der US-A-3 980 380 bekannt. Dessen Nachteil besteht vor allem darin, daß der mit Schneidklemmen versehene Tragkörper mit Ausnehmungen ausgestattet ist, in welche die Kabeladern eines mehradrigen Elektrokabels eingeschoben werden müssen, was voraussetzt, daß diese vor dem Einschieben in eine entsprechende geometrische Anordnung gebracht werden müssen. Ein weiterer Nachteil ist darin zu sehen, daß das Eindrücken der Kabeladern in die Schneidklemmen zum Zwecke der Kontaktierung mit Hilfe von Federbügeln durch den Mantelkörper einen erheblichen Kraftaufwand erfordert.A cable connector of this type is known from US-A-3 980 380. The main disadvantage of this is that the support body, which is provided with insulation displacement terminals, is equipped with recesses into which the cable cores of a multi-core electrical cable have to be inserted, which presupposes that they have to be brought into a corresponding geometric arrangement before being inserted. Another disadvantage is the fact that the pressing of the cable wires into the insulation displacement connectors for the purpose of contacting with the aid of spring clips through the jacket body requires considerable effort.

Der Erfindung liegt die Aufgabe zugrunde, unter Ausnutzung der prinzipiellen Vorteile einer Schneidklemmenverbindung diese vor allem bei Verbindungselementen mit mehreren Elektroden derart zu vereinfachen, daß der Zeit- und Kraftaufwand für das Herstellen der Kabelverbindung ohne Beeinträchtigung der Betriebssicherheit auf ein Minimum reduziert werden kann.The invention has for its object to take advantage of the basic advantages of an insulation displacement connection, especially in the case of connecting elements with multiple electrodes, in such a way that the time and effort required to establish the cable connection can be reduced to a minimum without impairing operational reliability.

Diese Aufgabe wird durch die im unabhängigen Patentanspruch 1 angegebene Erfindung gelöst.This object is achieved by the invention specified in independent claim 1.

Dadurch wird erreicht, daß das Einführen der Kabeladern in die zugeordneten Schneidklemmen ohne vorheriges Kalibrieren und ohne besonderes Werkzeug bei gleichzeitiger Zugentlastung des Kabels erfolgen kann und sich außerdem der Kraftaufwand für das gleichzeitige Eindrücken der Enden der Kabeladern in die Schneidklemmen durch eine kombinierte Dreh-Schub-Bewegung stark reduzieren läßt.The result of this is that the cable cores can be inserted into the assigned insulation displacement clamps without prior calibration and without any special tools and at the same time strain relief of the cable, and moreover the effort required for simultaneously pressing the ends of the cable cores into the insulation displacement clamps by means of a combined twist-push Can greatly reduce movement.

Durch die im unabhängigen Patentanspruch 5 angegebene Erfindung läßt sich der Eindrückvorgang durch gleichmäßige Druckausübung auf die einzudrückenden Kabelenden so gestalten, daß auch verhältnismäßig dünne Litzenadern ohne Knickgefahr in die Schneidklemmen eingedrückt werden können.Due to the invention specified in independent claim 5, the pressing-in process can be designed by evenly exerting pressure on the cable ends to be pressed in so that even relatively thin stranded wires can be pressed into the insulation-piercing terminals without risk of kinking.

Vorteilhafte Weiterbildungen und Ausgestaltungen sind in den Unteransprüchen gekennzeichnet.Advantageous further developments and refinements are characterized in the subclaims.

Ein Ausführungsbeispiel der Erfindung wird anhand der Zeichnung im folgenden näher erläutert.An embodiment of the invention is explained in more detail below with reference to the drawing.

Es zeigen:

  • Fig. 1 eine perspektivische Ansicht eines Kabelanschlußelementes mit den Merkmalen der Erfindung in Explosionsdarstellung, Fig. 2 das Kabelanschlußelement in teilweise geschnittener Seitenansicht,
  • Fig. 3 eine Querschnittsdarstellung in der Ebene 111-111 des Kabelanschlußelementes mit auf den Schneidklemmen aufliegenden Kabeladern,
  • Fig. 4 eine perspektivische Ansicht eines Kabelanschlußelementes mit einem besonders einfachen Mittel zum Eindrücken der Kabeladern in die Schneidklemmen in Explosionsdarstellung,
  • Fig. 5 das Kabelanschlußelement nach Fig. 4 in teilweise geschnittener Seitenansicht,
  • Fig. 6 eine Querschnittsdarstellung in der Ebene VI-VI des Kabelanschlußelementes nach Fig. 4 mit auf den Schneidklemmen aufliegenden Kabeladern, und
  • Fig. 7 eine teilweise geschnittene Seitenansicht des Kabelanschlußelementes entsprechend Fig. 5 mit aufgeschraubter Überwurfmutter.
Show it:
  • 1 is a perspective view of a cable connection element with the features of the invention in an exploded view, Fig. 2, the cable connection element in a partially sectioned side view,
  • 3 shows a cross-sectional illustration in the plane 111-111 of the cable connection element with cable cores resting on the insulation displacement terminals,
  • 4 is an exploded perspective view of a cable connection element with a particularly simple means for pressing the cable wires into the insulation displacement terminals,
  • 5 shows the cable connection element according to FIG. 4 in a partially sectioned side view,
  • Fig. 6 is a cross-sectional view in the plane VI-VI of the cable connection element of FIG. 4 with cable cores resting on the insulation displacement terminals, and
  • Fig. 7 is a partially sectioned side view of the cable connection element corresponding to FIG. 5 with a screwed nut.

Das in Fig. 1 dargestellte zylindrische Kabelanschlußelement ist gebildet aus einem schraubenartigen Tragkörper 1 mit Rechteckgewinde 2 und einer hülsenförmigen Überwurfmutter 3 aus Isoliermaterial mit entsprechendem Innengewinde zum Aufschrauben auf den Tragkörper 1 sowie mit den zwischen beiden angeordneten Dichtungs-und Zugentlastungsringen 4 aus elastischem Material. Die Überwurfmutter 3 hat die Form einer einseitig offenen Hülse und ist so bemessen, daß sie in aufgeschnittenem Zustand den Tragkörper 1 vollständig überdeckt und einführungsseitig um einen solchen Betrag axial überragt, daß ein Hohlraum für die Unterbringung der Ringe 4 zur KabelZugentlastung und Abdichtung entsteht. Die geschlossene, dem Tragkörper 1 abgewandte Stirnseite der Überwurfmutter 3 ist mit einer Wulst 5 versehen, die die Überwurfmutter 3 bis auf eine Öffnung 6 für die Durchführung des Kabels 7 (Fig. 2) abschließt. Der Tragkörper 1 ist an seinem der Einführungsseite gegenüberliegenden Ende fest mit einem Gerät 8 verbunden. Außerdem besitzt der Tragkörper 1 von seiner einführungsseitigen Stirnfläche zum geräteseitigen Ende axial sich erstreckende, symmetrisch angeordnete, nach außen geöffnete nutenförmige Ausnehmungen 9,10,11,12 mit rechteckigem Querschnitt zur Aufnahme von Schneidklemmen 13,14,15,16. Diese Ausnehmungen sind so gestaltet, daß jeweils eine ihrer Wandungen in einer Durchmesserebene und die gegenüberliegende, zur erstgenannten parallel sich erstreckenden Wandung der betreffenden Ausnehmung im Abstand der Schneidklemmenbereite radial versetzt angeordnet ist. Die elektrisch mit dem jeweiligen Geräteanschluß verbundenen Schneidklemmen 13,14,15,16 sind gemäß der Darstellung in Fig. 3 so in den ihnen jeweils zugeordneten Ausnehmungen 9,10,11,12 angeordnet, daß sie mit ihren quer zur Klemmkerbe sich erstreckenden Breitseiten, in entsprechend der Gewindesteigung axial gegeneinander versetzten Querschnittsebenen liegend, etwa in der Mitte zwischen der eintrittsseitigen Stirnfläche und dem geräteseitigen Ende des Tragkörpers 1 mit dessen Scheitelfläche abschließend, in den Gewindekamm hineinragen. Zum elektrisch leitenden Verbinden der in die Ausnehmungen 9, 10, 11, 12 eingeführten Kabeladern 17, 18, 19, 20 wird die in der jeweiligen Ausnehmung befindliche Kabelader zunächst auf die aufgefächerte Außenkante der Schneidkerbe der betreffenden Schneidklemme aufgelegt. Das Eindrücken der so aufgelegten Kabelader in die Schneidkerbe geschieht mit Hilfe der Überwurfmutter 3. Dazu ist deren Gewinde, wie in Fig. 2 zu erkennen, so gestaltet, daß die wirksame Gewindehöhe, die etwa dem maximalen Durchmesser der Kabeladern entspricht, am geräteseitigen Ende, von der Gewindebasis beginnend, während der ersten Gewindegänge allmählich bis auf die Höhe des Gewindekammes ansteigt. Dadurch ist erreicht, daß beim Aufschrauben der Überwurfmutter 3 die auf den Stirnseiten der Schneidklemmen 13, 14,15,16 aufliegenden Kabeladern 17, 18, 19,20 beim Aufschrauben der Überwurfmutter durch die vor und hinter der jeweiligen Schneidklemme befindlichen Gewindegänge nacheinander in die Schneidkerben der Schneidklemmen eingedrückt werden. Dabei treten an jeder Kabelader zwei vektoriell unterschiedliche Kräfte auf, wie dies in Fig. 3 in der Querschnittsfläche der Kabelader 18 dargestellt ist. Durch die Aufschraubbewegung der Überwurfmutter 3 entsteht eine durch Reibung verursachte Tangentialkraft Pt sowie eine senkrecht dazu gerichtete Radialkraft Pr. Die daraus resultierende Kraft Pd muß nun wenigstens annähernd in Richtung der Schneidkerbe weisen, damit die Kabelader nicht auf der Stirnkante der jeweils zugeordneten Schneidklemme abgeschert werden kann, sondern in die Schneidkerbe hineingleitet. Dies wird auf einfachste Weise dadurch erreicht, daß die Ausnehmungen und damit auch die Schneidklemmen gegenüber den Durchmesserachsen mit den Schneidkerben parallel zu diesen jedoch in Drehrichtung der Überwurfmutter um die halbe Breite der Ausnehmung radial versetzt angeordnet sind.The cylindrical cable connection element shown in Fig. 1 is formed from a screw-like support body 1 with a rectangular thread 2 and a sleeve-shaped union nut 3 made of insulating material with a corresponding internal thread for screwing onto the support body 1 and with the sealing and strain relief rings 4 made of elastic material arranged between the two. The union nut 3 has the shape of a sleeve open on one side and is dimensioned such that it completely covers the supporting body 1 in the cut state and axially projects beyond the insertion side by such an amount that a cavity for accommodating the rings 4 for cable strain relief and sealing is created. The closed end face of the union nut 3 facing away from the support body 1 is provided with a bead 5 which closes the union nut 3 except for an opening 6 for the passage of the cable 7 (FIG. 2). The support body 1 is fixedly connected to a device 8 at its end opposite the insertion side. In addition, the support body 1 has, from its insertion-side end face to the device-side end, axially extending, symmetrically arranged, outwardly open groove-shaped recesses 9, 10, 11, 12 with a rectangular cross section for receiving insulation displacement clamps 13, 14, 15, 16. These recesses are designed such that one of their walls is arranged in a plane of diameter and the opposite wall of the recess in question, which extends parallel to the former, is radially offset at a distance from the insulation displacement connector. The insulation displacement connectors 13, 14, 15, 16 electrically connected to the respective device connection are arranged, as shown in FIG. 3, in the recesses 9, 10, 11, 12 respectively assigned to them in such a way that their broad sides extending transversely to the clamping notch, in cross-sectional planes axially offset with respect to the thread pitch lying in the middle, between the entry-side end face and the device-side end of the support body 1 with its apex surface, protrude into the thread crest. For the electrically conductive connection of the cable cores 17, 18, 19, 20 introduced into the recesses 9, 10, 11, 12, the cable core located in the respective recess is first placed on the fanned-out outer edge of the cutting notch of the relevant insulation piercing terminal. The cable core thus laid is pressed into the cutting notch with the aid of the union nut 3. For this purpose, the thread, as can be seen in FIG. 2, is designed in such a way that the effective thread height, which corresponds approximately to the maximum diameter of the cable core, at the end of the device, starting from the thread base, gradually increasing to the height of the thread comb during the first threads. It is thereby achieved that when the union nut 3 is screwed on, the cable wires 17, 18, 19, 20 resting on the end faces of the insulation piercing terminals 13, 14, 15, 16 when the union nut is screwed on through the threads located in front of and behind the respective insulation displacement connector one after the other into the cutting notches of the insulation displacement terminals are pressed in. In this case, two vectorially different forces occur on each cable core, as shown in FIG. 3 in the cross-sectional area of the cable core 18. The unscrewing movement of the union nut 3 creates a tangential force Pt caused by friction and a radial force Pr directed perpendicularly to it. The resulting force Pd must now point at least approximately in the direction of the cutting notch, so that the cable core cannot be sheared off on the front edge of the respective cutting terminal , but slides into the cutting notch. This is achieved in the simplest way in that the recesses and thus also the insulation displacement clamps are arranged radially offset with respect to the diameter axes with the cutting notches parallel to these but in the direction of rotation of the union nut by half the width of the recess.

Die zur Zugentlastung des Kabels 7 und zum Schutz gegen das Eindringen von Staub und Feuchtigkeit in das Anschlußelement im kabelseitigen Hohlraum der Überwurfmutter befindliche Dichtung 4 wird im angeschraubten Zustand der Überwurfmutter 3 auf dem Tragkörper 1, wie in Fig. 2 dargestellt, durch die Wulst 5 der Überwurfmutter 3 im Einführungsbereich des Kabels 7 gegen dessen Oberfläche soiwie gegen die Stirnfläche des Tragkörpers 1 gepreßt. Darüber hinaus liegt die Überwurfmutter 3 dabei an einem geräteseitig in eine Nut des Tragkörpers 1 eingelegten O-Ring 21 aus elastischem Material staub- und feuchtigkeitsdicht an.The seal 4 for strain relief of the cable 7 and for protection against the ingress of dust and moisture into the connecting element in the cable-side cavity of the union nut is screwed on the union nut 3 on the support body 1, as shown in FIG. 2, by the bead 5 the union nut 3 in the insertion area of the cable 7 against its surface and against the end face of the support body 1. In addition, the union nut 3 rests dust and moisture-tight on an O-ring 21 made of elastic material and inserted into a groove of the supporting body 1 on the device.

Um die Kabeladern 17,18,19,20 nach ihrem Austritt aus dem Kabel 7 gegebenenfalls auch über Kreuz in die Ausnehmungen 9,10,11,12 einführen zu können, sind deren Trennwände gegenüber der einführungsseitigen Stirnwand des Tragkörpers 1 in axialer Richtung um einen entsprechenden Betrag geräteseitig versetzt angeordnet, so daß freier Raum für die "Über-Kreuz-Verlegung" der Kabeladern im Inneren des Tragkörpers entsteht und das Ende des Kabelmantels daher etwa mit der Stirnfläche des Tragkörpers fluchtet, so daß der Raum für die Zugentlastung nicht durch besondere Mittel axial vergrößert werden muß.In order to be able to insert the cable wires 17, 18, 19, 20 after their exit from the cable 7, possibly also crosswise, into the recesses 9, 10, 11, 12, their partitions are axially opposite one another in relation to the end wall of the support body 1 on the insertion side corresponding amount offset on the device side, so that free space for the "cross-laying" of the cable cores in the interior of the support body and the end of the cable jacket is therefore aligned approximately with the end face of the support body, so that the space for the strain relief not by special Means must be increased axially.

Es ist natürlich auch möglich, die dargestellten vier Ausnehmungen 9,10,11,12 der gewünschten Aderzahl anzupassen. Auch ist es möglich, das erfindungsgemäße Kabelanschlußelement als Kabelmuffe zur Verbindung von zwei Kabelenden oder als T-Stück zur Verbindung von zwei Kabeln mit einem Gerät auszubilden.It is of course also possible to adapt the four recesses 9, 10, 11, 12 shown to the desired number of wires. It is also possible to design the cable connection element according to the invention as a cable sleeve for connecting two cable ends or as a T-piece for connecting two cables to one device.

Die Verwendung eines Gewindes mit rechteckigem Profil hat sich als zweckmäßig erwiesen. Sollte es von Fall zu Fall notwendig sein, andere Gewindeprofile anzuwenden, ist dies ohne Beeinträchtigung des Erfindungsprinzips möglich.The use of a thread with a rectangular profile has proven to be useful. Should it be necessary to use other thread profiles from case to case, this is possible without affecting the principle of the invention.

Das in Fig. 4 dargestellte, dem vorbeschriebenen entsprechende Kabelanschlußelement ist ebenfalls aus einem schraubenartigen Tragkörper 22 mit dem Gewinde 23, das ein normales metrisches Gewinde, beispielsweise M14 sein kann, und der hülsenförmigen Oberwurfmutter 3 mit entsprechendem Innengewinde zum Aufschrauben auf den Tragkörper 22 sowie mit einem zwischen beiden angeordneten Druckkörper 24 aus elastischem Material gebildet. Die Überwurfmutter 3 hat die bereits beschriebene Form einer einseitig offenen Hülse und ist wiederum so bemessen, daß sie in aufgeschraubtem Zustand den Tragkörper 22 vollständig überdeckt und einführungsseitig um einen solchen Betrag axial überragt, daß ein Hohlraum für die Unterbringung des Druckkörpers 24 an Stelle der Ringe 4 (Fig. 1) entsteht. Sie ist ebenfalls an ihrer Stirnseite mit einer Wulst 5 versehen, die sie bis auf die Öffnung 6 für die Durchführung des Kabels 7 abschließt (Fig. 2 und 5). Der Tragkörper 22 ist an seinem der Einführungsseite gegenüberliegenden Ende fest mit dem Gerät 8 verbunden. Außerdem besitzt der Tragkörper 22 von seiner einführungsseitigen Stirnfläche zum geräteseitigen Ende axial sich erstreckende, symmetrisch angeordnete, nach außen geöffnete nutenförmige Ausnehmungen 25, 26, 27 mit etwa angenähert rechteckigem Querschnitt zur Aufnahme der Schneidklemmen 28, 29, 30. Diese Ausnehmungen sind koaxial symmetrisch in den Tragkörper 22 eingelassen. Die elektrisch mit dem jeweiligen Geräteanschluß verbundenen Schneidklemmen 28, 29, 30 sind gemäß der Darstellung in Fig. 5 so in den ihnen jeweils zugeordneten Ausnehmungen 25, 26, 27 angeordnet, daß sie mit ihren quer zur Klemmkerbe sich erstreckenden Breitseiten etwa in der Mitte zwischen der eintrittseitigen Stirnfläche und dem geräteseitigen Ende des Tragkörpers 22 mit dem Gewindefuß abschließend sich radial nach außen erstrecken. Der Druckkörper 24 ist ringförmig so ausgebildet, daß sein Außendurchmesser etwa dem Innendurchmesser der Überwurfmutter 3 und sein Innendurchmesser etwa dem Außendurchmesser des einzuführenden Kabels 7 entspricht. An seinem dem Tragkörper 22 abgewandten Ende ist der Druckkörper gefiedert, so daß er nach dem Aufschrauben der Überwurfmutter 3 durch deren zur Kabeleintrittsseite hin konisch zulaufende Innenwand um einen solchen Betrag zusammengepreßt werden kann, daß er den elastischen Ring 31 gegen das Kabel preßt und dieses zugentlastet. Zum Tragkörper hin ist der Druckkörper 24 mit in radialer Richtung elastischen Fingern 32, 33, 34 solcher Länge versehen, daß diese sich im anliegenden Zustand des Druckkörpers 24 an der Stirnseite des Tragkörpers 1 über den Schneidklemmen 28, 29, 30 befinden, wobei die Enden der Finger 32, 33, 34 so geformt sind, daß sie sich um einen gewissen Betrag elastisch eindrücken lassen. Zu diesem Zweck ist das Gewinde der Überwurfmutter 3, wie in den Figuren 5 und 7 dargestellt, so gestaltet, daß die wirksame Gewindehöhe, die etwa dem maximalen Durchmesser der Kabeladern entspricht, am geräteseitigen Ende, von der Gewindebasis beginnend, während der ersten Gewindegänge allmählich bis auf die Höhe des Gewindekammes ansteigt. Dadurch ist erreicht, daß beim Aufschrauben der Überwurfmutter 3 die auf den Stirnseiten der Schneidklemmen 28, 29, 30 jeweils aufliegenden Kabeladern nach dem Aufschieben des Druckkörpers 24,entsprechend der Darstellung in Fig. 5 mit der auf der Schneidklemme 28 aufliegenden Kabelader 35, von den Fingern 32, 33, 34 radial in Richtung auf die Tragkörperachse bewegt und dabei in die ihnen zugeordneten Klemmen eingedrückt werden. In Fig. 7 ist dieser Endzustand dargestellt. Dabei ist auch zu erkennen, daß die Überwurfmutter 3 geräteseitig an dem in den Tragkörper 22 eingelassenen elastischen 0-Ring 36 und einführungsseitig an dem in den Druckkörper 24 eingelassenen elastischen 0-Ring 37 anliegt, so daß das Innere des Anschlußelementes gegen das Eindringen von Staub und Feuchtigkeit geschützt ist. Durch die besondere Ausbildung des Druckkörpers 24 ist erreicht, daß durch dessen Finger 32, 33, 34 auch sehr flexible Kabeladern einwandfrei an die Klemmkerben hineingedrückt werden, so daß eine ausgezeichnete elektrische Kontaktierung auch für diesen Fall herstellbar ist. Darüber hinaus dient der Druckkörper 24, der als preiswertes Kunststoffteil ausgebildet sein kann, gleichzeitig der Zugentlastung des eingeführten Kabels 7 und der kabelseitigen Abdichtung des Anschlußelementes.4, the corresponding cable connection element described above is also made of a screw-like support body 22 with the thread 23, which can be a normal metric thread, for example M14, and the sleeve-shaped cap nut 3 with a corresponding internal thread for screwing onto the support body 22 and with formed between the two pressure body 24 made of elastic material. The union nut 3 has the shape already described of a sleeve open on one side and is in turn dimensioned such that it completely covers the supporting body 22 in the screwed-on state and projects axially on the insertion side by an amount such that a cavity for accommodating the pressure body 24 instead of the rings 4 (Fig. 1) arises. It is also provided on its end face with a bead 5, which it closes except for the opening 6 for the passage of the cable 7 (FIGS. 2 and 5). The support body 22 is fixedly connected to the device 8 at its end opposite the insertion side. In addition, the support body 22 has from its insertion-side end face to the device-side end axially extending, symmetrically arranged, outwardly open groove-shaped recesses 25, 26, 27 with an approximately rectangular cross-section for receiving the insulation displacement clamps 28, 29, 30. These recesses are coaxially symmetrical in the support body 22 embedded. The insulation displacement connectors 28, 29, 30, which are electrically connected to the respective device connection, are arranged in the recesses 25, 26, 27 assigned to them in accordance with the illustration in FIG finally extend radially outwards in the middle between the entry-side end face and the device-side end of the support body 22 with the threaded foot. The pressure body 24 is annular so that its outer diameter approximately corresponds to the inner diameter of the union nut 3 and its inner diameter approximately corresponds to the outer diameter of the cable 7 to be inserted. At its end facing away from the support body 22, the pressure body is feathered, so that after the union nut 3 has been screwed on, its inner wall, which tapers conically towards the cable entry side, can be compressed by such an amount that it presses the elastic ring 31 against the cable and relieves it of strain . Towards the support body, the pressure body 24 is provided with fingers 32, 33, 34 which are elastic in the radial direction and are of such a length that they are in the abutting state of the pressure body 24 on the end face of the support body 1 above the insulation displacement terminals 28, 29, 30, the ends the fingers 32, 33, 34 are shaped so that they can be pressed in elastically by a certain amount. For this purpose, the thread of the union nut 3, as shown in FIGS. 5 and 7, is designed in such a way that the effective thread height, which corresponds approximately to the maximum diameter of the cable cores, gradually at the end on the device side, starting from the thread base, during the first threads up to the height of the thread comb. It is thereby achieved that when the union nut 3 is screwed on, the cable cores lying on the end faces of the insulation-piercing clamps 28, 29, 30 after pushing on the pressure element 24, as shown in FIG. 5, with the cable core 35 resting on the insulation-piercing clamp 28, Fingers 32, 33, 34 are moved radially in the direction of the support body axis and are pressed into the clamps assigned to them. This final state is shown in FIG. 7. It can also be seen that the union nut 3 rests on the device side on the elastic 0-ring 36 embedded in the support body 22 and on the insertion side on the elastic 0-ring 37 inserted in the pressure body 24, so that the interior of the connecting element prevents the ingress of dust and moisture is protected. The special design of the pressure body 24 ensures that even very flexible cable cores are pressed perfectly into the clamping notches by its fingers 32, 33, 34, so that excellent electrical contacting can also be produced in this case. In addition, the pressure element 24, which can be designed as an inexpensive plastic part, simultaneously serves to relieve the strain on the inserted cable 7 and to seal the connection element on the cable side.

Claims (7)

1. A cable connection element for the electrically conductive connection of a multi- strand electrical cable (7), comprising a number of connecting electrodes which corresponds to the number of electrical connection elements and which are connected to the electrical connection either fixedly or in a plug-in fashion, and comprising a cylindrical carrier body (1) which is provided with a number of axially arranged recesses (9-12) which are spatially separated and extend from the end face of the carrier body to the side of the electrical connection elements so as to be substantially axial and which serve for the insertion of the cable strands (17, 18, 19, 20) and which number of recesses corresponds to the number of connecting electrodes, and the connecting electrodes are designed as cutting terminals (13,14,15,16) for the releasable connection to the assigned cable strands (17-20) which terminals are arranged in the recesses (9, 10, 11, 12) of the carrier body (1), which are respectively assigned thereto, in such manner that by means of their broadsides which extend transversely to the clamping notches, they extend radially outwardly at most to the level of the shell surface so as to approximately lie in the centre between the input end face and the end of the carrier body (1) at the end of the connection element, and there are arranged means which are operated by a cylindrical shell body (3) and serve to press the cable strands (17.18,19,20) into the assigned clamping notches of the cutting terminals (13,14,15,16), characterised in that the carrier body (1) is provided with an external thread (2) and the shell body (3) is provided with a corresponding internal thread and designed as a sleeve-like screw cap (3) for screwing onto the carrier body (1), that the recesses (9,10,11,12) for inserting the cable strands (17, 18, 19, 20) are groove-shaped and the thread of the screw cap (3) serves as the means for pressing the inserted cable strands (17,18,19, 20) into the assigned cutting terminals (13,14,15,16), which thread extends to the apparatus end of the screw cap (3) and is designed to be such for this purpose that commencing from the thread root, during the first thread pitches in the threading direction, it rises to the level of the thread crest, which rise at least corresponds to the diameter of the cable strands, where the cutting terminals project beyond the thread crest and where broadsides extend transversely to their clamping notches and lie in cross-sectional planes, which are axially staggered in accordance with the thread pitch, and are flush with the top of the supporting body (1), where the clamping notches are arranged at such an angle against the direction of rotation of the screw cap (3) that the vector of the force (Pd) which is exerted on a cable strand resting on the top edge of the clamping notch of the respective cutting terminal (13, 14, 15, 16) when threading the screw cap results from the radial pressure (Pr) and the tangential friction (Pt), and points in the direction of the clamping notch.
2. A cable connection element as claimed in claim 1, characterised in that an elastic ring (4) which surrounds the cable (7) can be inserted into the screw cap (3), which ring is pressed against the end face of the carrier body by a ridge (5) which forms the end face of the screw cap, by the tightening of the screw cap (3) on the carrier body (1) in such a manner that the ring (4) is pressed against the cable (7) in a watertight and slip-resistant fashion.
3. A cable connection element as claimed in claim 1 or 2, characterised in that the walls between the recesses (9, 10, 11, 12) are axially set back from the end face of the carrier body (1) in the direction of the apparatus by such an amount that a free space is formed for a cross-over installation of the cable strands (17,18,19,20), so that the cable sheath ends approximately flush with the end face of the carrier body (1).
4. A cable connection element as claimed in one of the preceding claims, characterised in that the groove-shaped recesses (9,10,11,12) are arranged to be such that one of their radial walls is in a diametral plane of the carrier body (1) and the opposite wall of the respective recess, which extends parallel to the first-mentioned wall, is offset in the radial direction by the width of the recess.
5. A cable connection element for the electrically conductive connection of a multi- strand electrical cable to an electrical apparatus, comprising a number of connecting electrodes which are connected to the apparatus terminals either fixedly or in a plug-in fashion, which number corresponds to the number of apparatus terminals, and comprising a carrier body (22) which is provided with axially arranged recesses which are spatially separated and extend from the end face of the carrier body to the apparatus side so as to be essentially axial and which number of recesses corresponds to the number of connecting electrodes and serves for the insertion of the cable strands (35), and the connecting electrodes are designed as cutting terminals (28, 29, 30) for the releasable connection to the assigned cable strands, which terminals are arranged in the respectively assigned recesses (25, 26, 27) of the carrier body (22) in such a manner that by means of their broadsides which extend transversely to the clamping notches, they extend radially outwardly to the level of the shell surface so as to approximately lie in the centre between the input end face and the apparatus end of the carrier body (22), and means operated by a cylindrical shell body (3) press the cable strands (35) into their assigned clamping notches of the cutting terminals (28, 29, 30), are provided, characterised in that the carrier body (22) is provided with an external thread (23) and the shell body (3) having a corresponding internal thread for threading onto the carrier body (22) is designed as a sleeve-like screw cap (3), whose wall thickness commencing in the threading direction from a minimal value at the apparatus end and extending over the threading depth, increases to a higher value in such a manner that the difference between said higher value and the minimal value at least corresponds to the diameter of the strand, that the recesses (25, 26, 27) for the insertion of the cable strands (35) are groove-shaped and a pressure body (24) which can be inserted into the screw cap (3) between the ridge (5) thereof and the end face of the supporting body (22), forms the means operated by the screw cap (3) for pressing the strands of the cable (7) into the assigned clamping notches of the cutting terminals (28, 29, 30), which pressure body possesses a ring which surrounds the cable (7) and whose outer diameter approximately corresponds to the inner diameter of the screw cap (3) and which on its outside is provided with a number of elastic fingers (32, 33, 34) corresponding to the number of cutting terminals (28, 29, 30) which extend in the direction of the cutting terminals and are arranged in the same angular positions and are insertable into the groove-shaped recesses (25, 26, 27) and are of such a length that when the pressure body (24) rests against the end face of the supporting body (22) the ends of the fingers adjacent the cutting terminals are positioned above the cutting terminals (28, 29, 30), which ends are shaped to be such that by threading the screw cap they can be pressed by the conical inner surface thereof into the clamping notches of the cutting terminals (28, 29, 30).
6. A cable connection element as claimed in claim 5, characterised in that by means of its conical ridge (5) arranged at the insertion end, via the feathered end of the pressure body (24), which faces towards said ridge, following the tightening, the screw cap (3) presses an elastic ring (31) which is inserted into the pressure body against the cable (7) in a slip-resistant and watertight fashion.
7. A cable connection element as claimed in claim 2 or 6, characterised in that in the tightened position the sleeve-like screw cap (3) completely covers the supporting body (1, 22) and abuts upon an 0-ring (21, 36) which is arranged in an annular slot positioned in the supporting body at the apparatus side and consists of an elastic material, so as to be resistant to moisture.
EP82111362A 1981-12-21 1982-12-08 Electrical cable junction unit equipped with cutting terminals Expired EP0083738B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82111362T ATE26043T1 (en) 1981-12-21 1982-12-08 ELECTRICAL CABLE CONNECTION ELEMENT WITH IDC TERMINALS.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19813150568 DE3150568C1 (en) 1981-12-21 1981-12-21 Cable connecting element
DE3150568 1981-12-21
DE19823220006 DE3220006C1 (en) 1982-05-27 1982-05-27 Cable connecting element
DE3220006 1982-05-27

Publications (3)

Publication Number Publication Date
EP0083738A2 EP0083738A2 (en) 1983-07-20
EP0083738A3 EP0083738A3 (en) 1985-04-10
EP0083738B1 true EP0083738B1 (en) 1987-03-18

Family

ID=25798157

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111362A Expired EP0083738B1 (en) 1981-12-21 1982-12-08 Electrical cable junction unit equipped with cutting terminals

Country Status (3)

Country Link
US (1) US4501463A (en)
EP (1) EP0083738B1 (en)
DE (1) DE3275794D1 (en)

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DE102011010854A1 (en) 2011-02-10 2012-08-16 Juwi R & D Research Development Gmbh & Co. Kg Electrical connection element
CN111509436A (en) * 2020-05-07 2020-08-07 泰州市航宇电器有限公司 Multi-core connector with stepped arrangement and wiring puncture function

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GB2272799A (en) * 1992-10-20 1994-05-25 Ian Hambrook Cable termination to electrical connectors
ITTO20030086U1 (en) * 2003-05-20 2004-11-21 Saip & Schyller S R L Ora Saip Sc Hiller S P A CONTACT HOLDER GROUP FOR AN ELECTRIC CONNECTION SOCKET.
GB2409353A (en) * 2003-12-20 2005-06-22 Deutsch Ltd A re-useable insulation piercing connector
DE102011108123B4 (en) * 2011-07-21 2013-02-28 Phoenix Contact Gmbh & Co. Kg Cable connection component and cable connection device and cable connection device with a cable connection component
DE102012103708B3 (en) * 2012-04-27 2013-07-11 HARTING Electronics GmbH Insulator of a connector
CN103909175B (en) * 2014-03-28 2015-11-11 青岛云路新能源科技有限公司 Inductance coil wire stitch smoothes out with the fingers straight device automatically
DE102014109043B4 (en) * 2014-06-27 2016-06-16 Phoenix Contact Gmbh & Co. Kg Cable component
DE102017201132A1 (en) * 2017-01-25 2018-07-26 Robert Bosch Gmbh Device for introducing an electric cable comprising a plurality of wires or strands into a housing, dosing module for an exhaust gas aftertreatment device with such a device

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DE2448111C3 (en) * 1974-10-09 1982-03-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Arrangement for connecting electrical lines to an electrical device

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Publication number Priority date Publication date Assignee Title
DE102011010854A1 (en) 2011-02-10 2012-08-16 Juwi R & D Research Development Gmbh & Co. Kg Electrical connection element
WO2012107179A1 (en) 2011-02-10 2012-08-16 Juwi R & D Research & Development Gmbh & Co. Kg Electrical connecting element
CN111509436A (en) * 2020-05-07 2020-08-07 泰州市航宇电器有限公司 Multi-core connector with stepped arrangement and wiring puncture function

Also Published As

Publication number Publication date
DE3275794D1 (en) 1987-04-23
EP0083738A3 (en) 1985-04-10
US4501463A (en) 1985-02-26
EP0083738A2 (en) 1983-07-20

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