EP0318007B1 - Device for clamped connections for the establishing of a branch to the conductor of an active cable - Google Patents

Device for clamped connections for the establishing of a branch to the conductor of an active cable Download PDF

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Publication number
EP0318007B1
EP0318007B1 EP88119596A EP88119596A EP0318007B1 EP 0318007 B1 EP0318007 B1 EP 0318007B1 EP 88119596 A EP88119596 A EP 88119596A EP 88119596 A EP88119596 A EP 88119596A EP 0318007 B1 EP0318007 B1 EP 0318007B1
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EP
European Patent Office
Prior art keywords
branch
main
terminal
conductor
producing
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 - Lifetime
Application number
EP88119596A
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German (de)
French (fr)
Other versions
EP0318007A2 (en
EP0318007A3 (en
Inventor
Horst Dipl.-Ing. Lössner
Manfred Behrens
Michael Dipl.-Ing. Lipprandt
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.)
RXS Schrumpftechnik Garnituren GmbH
REMA Lipprandt GmbH and Co KG
Original Assignee
RXS Schrumpftechnik Garnituren GmbH
REMA Lipprandt GmbH and Co KG
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Publication date
Application filed by RXS Schrumpftechnik Garnituren GmbH, REMA Lipprandt GmbH and Co KG filed Critical RXS Schrumpftechnik Garnituren GmbH
Priority to AT88119596T priority Critical patent/ATE100634T1/en
Publication of EP0318007A2 publication Critical patent/EP0318007A2/en
Publication of EP0318007A3 publication Critical patent/EP0318007A3/en
Application granted granted Critical
Publication of EP0318007B1 publication Critical patent/EP0318007B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/28Clamped connections, spring connections
    • H01R4/30Clamped connections, spring connections utilising a screw or nut clamping member
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/70Insulation of connections
    • H01R4/72Insulation of connections using a heat shrinking insulating sleeve

Definitions

  • the invention relates to a clamping device for producing a branch on the main conductor of a live voltage cable with a main terminal that can be placed on the uncut main conductor and also with a spaced branch terminal for receiving the end of a branch conductor in a clamping channel that contains a pressure screw for contacting.
  • It has a milling screw for penetrating the insulation of the main conductor to be contacted and for the longitudinal closure of its receiving channel leading the portion of the main conductor to be contacted has a molded body which can be pushed onto a base body, the individual electrical contact parts each in a pressure-resistant and dimensionally stable, electrically insulating Plastic existing insulating body are included and connect the main body of the main terminal with the main body of the branch terminal via a connecting web, wherein a connecting rail is guided in the connecting web, which connects or contacts the contact parts of the main terminal and the branch terminal with each other, and wherein the main body of the main terminal undercuts and has lugs, via which, with the formation of a downward and / or laterally opening insertion opening, the one adapted to the lugs and undercuts and rounded off there Molded body can be pushed on.
  • This single-phase clamping device allows the production of a branch on voltage cables, with or without potential disconnection on the separate main conductors the main cable can be connected to a particular main conductor by means of this clamping device. It is possible to make the subsequent sealing of the branch point and the mechanical protection against external forces quickly and easily, using shrink fittings.
  • the main clamp of the clamping device described above has a base body which has an extension downward in the form of an approximately C-shaped shape, within which the main conductor to be contacted by the main clamp and the lateral insertion opening on the side legs of the C-shape are guided Has approaches and undercuts, by means of which an adapted molded body can be slid on with the longitudinal closure of the receiving channel.
  • the lugs on the side legs of the C-shape and the lugs on the undercuts of the molded body to be slipped there bend.
  • Manufacturing the clamp body from dimensionally stable and pressure-resistant plastic material therefore encounters considerable difficulties when using conventional, electrically insulating plastic injection molding materials.
  • the 2-way angled contact part is also loose and unprotected inside the insulating housing or the receiving channel of the terminal.
  • a branching device for cables is also known.
  • the main terminal and the branch terminal of this weighing device are connected to one another via an electrically conductive bend, the main cable and the branching cable being clamped in each case with the aid of a clamping screw.
  • the task for the present invention is to design a branch clamp for cable branch shrink fittings in such a way that a symmetrical distribution of force within the closure body of the main terminal after contacting the main conductor also occurs with the external forces acting on this branch after the branch has been produced, in particular the Plastic parts of the clamp should be dimensionally stable in this area, and there is a reliable contacting of the conductors over a long period of time.
  • the angled component formed from the two contact parts of the main and the branch terminal and the connecting rail is embedded on all sides within the plastic material of the wall of the main body of the main and branch terminal and the connecting web, or is extrusion-coated therewith, and thus above the Receiving channel of the main conductor is fixed, this component maintains its predetermined position even with larger external pressure and tensile loads on the branch. Movements relative to the contacted main conductor are therefore no longer possible.
  • the branch terminal can run parallel to this over a large part of the length of the main body of the main terminal.
  • a symmetrical design and arrangement of the molded body of the terminal to be slipped on the underside of the main body of the main terminal and fixing the main conductor there is possible.
  • the shaped body can be fixed laterally, in particular also in the upper region, almost over the entire length of the main body of the main terminal up to the branch of the connecting web of the main terminal. With forces acting on the main conductor in the receiving channel, a uniform application of force on the left and right side of the main terminal is thus possible.
  • the main body of the main terminal is designed as an elongated insulating body which is curved in a bowl-shaped manner from above and laterally outwards and covers the outside of the main conductor, which is rounded in cross section, preferably only a relatively narrow one Shaped body is used and for this only in the front area of the main body of the main terminal parallel guides are placed on the side of the milling screw.
  • the insulating body In the longitudinal direction of the insulating body, symmetrically on the right and left outside, these have, as holding ribs, the undercuts and projections provided for locking and guiding the molded body of the main terminal.
  • the molded body can be pushed onto the holding ribs in a snug or press fit, preferably a U / V-shaped bracket which laterally engages in the upper side of the base body is used as the molded body.
  • the upper ends of the sides of the frame which are mirror-symmetrical to the central axis of this frame, are designed as bends with undercuts and shoulders, which each engage in the corresponding undercuts or shoulders, which are located on the outside of the base body or the holding ribs there.
  • a spring element is preferably inserted in the leg angle of the U-shaped or V-shaped bow-shaped molded body, which resiliently presses the main conductor introduced there against the milling screw.
  • the spring element consists of a leaf spring which is resiliently mounted via a recess and acts against the convex underside of a notched plate which is curved in the manner of a cylinder wall section and which has notched teeth or transverse ribs on its concave inside, which preferably have a free web height which is greater than the insulation thickness of the insulation of the executive to be contacted.
  • the shrink sleeve While in the previously described older clamping device the connecting web is placed approximately in the middle of the length of the housing of the main terminal, the shrink sleeve having to be guided over this area over the two ends of the main clamp, in the new clamping device according to the invention the shrink sleeve only has to be up to the connecting web applied at the terminal end can be guided, where it is possible to seal the shrink sleeve against the insulating body of the main terminal, which rests in a shell-like manner on the main conductor and extends with its curved outer surface onto the main conductor.
  • a seal length of z. B. 2 cm To seal the main terminal on the side running out in front of the connecting web.
  • This shaped element is wrapped from the outside with the end portion of the shrink sleeve that runs out there, so that the shaped element comes into direct contact with the hot-melt adhesive on the inside of the shrink sleeve during the shrinking process and the sealing of the main conductor is brought about by this molding during the shrinking process.
  • the form or sealing element is squeezed together by the shrink sleeve and lies tightly on the top of the main conductor or on the inside of the shrink sleeve.
  • the main body of the main clamp is also convex on this front side opposite the branching of the connecting web, the retaining rib formed there by the right and left side Protrusions and undercuts are closed by the pushed-on U-shaped molded body. In this way, an optimal seal to the main conductor can be achieved at this end of the main clamp by the shrink sleeve to be sealed there in the shrinking process.
  • the branch clamp of the branch conductor is preferably sealed in a conventional manner via a piece of shrink tubing which is pulled over the end of the branch conductor or the as yet uncontacted branch clamp and then positioned after connection of the branch conductor and shrunk onto the branch clamp and the branch conductor.
  • the sealing of the main body against the main terminal the main conductor can of course also be done in a conventional manner by means of a shrink sleeve such that it is wrapped around the main body of the main clamp and the pushed-on U-shaped molded body over the entire length of the clamping device.
  • the shrink sleeve must have a recess, so that the shrink sleeve with this recess can first be put over the lateral branch clamp and the connecting web between the main and branch clamp.
  • FIG. 1 of the clamping device (1) shown in the drawings it consists of a main clamp (2), a branch clamp (7) being placed on the right next to it.
  • the main terminal (2) and branch terminal (7) are connected at the upper end of the main terminal by a connecting bar (16).
  • a connecting rail (12) is inserted within this connecting web (16), which connects the electrical contact parts of these terminals running in the longitudinal direction of the main terminal and the branch terminal.
  • a clamping channel sleeve is formed within the contact part of the branch terminal, the contact part with the section running out in the sleeve being surrounded from the outside with electrically insulating, pressure-resistant plastic material.
  • a bore is made through this outer jacket and the clamping channel sleeve, in which a pressure screw (9) can be screwed for contacting the end of the branch conductor to be fixed there.
  • the main body (17) of this Abzwei clamp has an outer insulating body (14) which laterally merges at the end into the connecting web (16) bent there to the left, which in turn opens into the outer insulating body (13) of the main terminal.
  • the insulating body (13, 14) and the outer insulating material of the connecting web (12) are made as a one-piece plastic part in the injection molding process, an extremely pressure-resistant and dimensionally stable material being used.
  • the connecting rail (12) and the electrical contact part (10) of the main terminal are encapsulated on all sides by the plastic material, so that apart from the bore area of the contact screw (3) of the main terminal, these two parts are not recognizable or touchable from the outside.
  • the main clamp (2) consists of the elongated, laterally rounded base body (5) shown in plan view in FIG. .
  • a receiving space (22) is formed between the underside of the base body and the inside of the pushed-on molded body, in which the uncut main conductor for producing the branch is to be inserted.
  • the molded body (6) is pulled off the front section of the main body (5), put over the main conductor not cut and then pushed over the main body which is placed on the main conductor and bulges over the main conductor and is fixed there.
  • the locking of the molded body takes place in principle simultaneously with the contacting of the main conductor, which is fixed in the insertion opening of the clamp by the milling screw (3) in the leg angle (31) of the bow-shaped molded body (6). (see Fig. 9)
  • This counter bearing to the milling screw (3) is formed according to FIG. 12 by a notch plate (33) and a leaf spring (35) resting against it. These two parts are mounted in a recess (32) which is opened inwards in the plastic material of the molded body (6).
  • the U-shaped shaped body has mirror-symmetrical bow sides with bends at their upper ends correspondingly mirror-symmetrical to one another, which form undercuts (27, 28) and shoulders (29, 30).
  • undercuts and shoulders are formed over the entire width of the shaped body (6) cooperate with undercuts (18, 19) and shoulders (20, 21) placed laterally above the main body (5) of the main clamp. These approaches and undercuts also run in the longitudinal direction of the base body, with all undercuts and approaches being press fit or snug fit.
  • the shoulders (20, 21) of the base body (5) form elongated retaining ribs which engage from below behind the inwardly bent shoulders (29, 30) of the upper temple ends.
  • the outside of the molded body (6) and the top of the base body (5) of the main clamp are matched to one another in such a way that the outer sides continuously merge.
  • the entire upper side of the clamp body thus forms a continuously curved surface, the lateral recesses of which are closed by the pushed-on molded body.
  • This adapted shape of the molded body and base body is also provided laterally and in the front end region of the clamp, where all the edges and corners projecting outwards are rounded off.
  • the outer surface of the main terminal can thus be sealed against the cable jacket of the contacted main conductor without difficulty by means of a shrink sleeve.
  • this seal and for guiding the main conductor into the receiving channel (4) of the main terminal is the creation of a wall extension (25) of the shell-shaped, outwardly bent insulating body (13) of the main terminal, this wall extension extending down into the area of the main terminal the main conductor to be inserted is pulled and extends in the longitudinal direction of the main terminal over the rear region of the insulating body (13) and thereby directly continues the inside of the pushed-on molded body.
  • This wall extension (25) can be clearly seen in the cross-sectional representations of FIGS. 6 and 7 after the sections E-F and C-D of FIG.
  • the wall extension (25) has the same curvature on the outside as the outside of the insulating body (13) of the main terminal base body (5). On the inside, the curvature of this wall extension corresponds to the curved inner surface of the bow-shaped shaped body (6), which is clearly shown in detail in FIGS. 3, 5 and 9.
  • the connecting web (16) of the main terminal and the branch terminal is bent in a circular arc downwards by the angle ( ⁇ ), so that the branch terminal (7) lies laterally in the lower region next to the main terminal (2).
  • Branch clamp and main clamp thus form a U-shaped clamping device which, due to the bending of the connecting web, is guided with its upper outer side on an outer radial surface. Because of this shape, it is possible to arrange a larger number of clamping devices (2) next to one another in a circle and to contact different main conductors of a main cable in each case by means of a corresponding clamping device.
  • the clamping devices can be arranged side by side in a compact manner, with external forces acting on the center of this circular arrangement of the clamping devices due to their external shape.
  • the length of the main body of the main terminal is 8.5 cm and the length of the main body of the branch terminal is 7 cm.
  • the outside diameter of the branch clamp which is circular in cross section, is about 2 cm and the maximum outside dimensions of the main body of the main clamp are 5 cm or 4 cm in cross section (height or width).
  • the height of the molded body (6) is a maximum of 4.5 cm and the width the bow sides of the molded body 3.5 cm, the wall thickness being about 0.6 cm.
  • the elongated shape of the main clamp (base body (5) or molded body (6)), which is rounded at the ends, can be clearly seen, the base body of the main clamp being shown by the wall extension (25) on the side of the branch clamp is extended laterally in the area of this branch terminal.
  • the wall extension (25) acts on the one hand as a support body for the shrink sleeve to be shrunk on there, as well as protection against a voltage flashover between the main and branch conductors and as an additional holder for the contacted main conductor.
  • FIGS. 2 and 5 For clarification, the pressure screw (9) of the branch terminal and the milling screw (3) of the main terminal and the guidance of the electrical contact parts and the connecting rail (10, 11, 12) are shown in FIGS. 2 and 5. Furthermore, the shaped body (6) can be seen in FIG. 2 in the left region of the clamping device and — in FIG. 4, which represents the rear side of this clamping device — corresponding to the right of the illustration of this clamping device.
  • the structure of the molded body (6) which laterally and downwardly delimits the receiving channel (4) for the main conductor below the main body (5) of the main clamp and results from FIGS. 8, 9 and 10.
  • the continuous curvature of the outside of this U-shaped part can be clearly seen.
  • the insulating body (13) or the base body (5) of the main terminal is indicated above the molded body (6), the insulating body (13) increasing continuously by 6 mm up to the center of the main terminal.
  • the shaped body (6) has an adapted rounded shape.
  • FIG. 13 shows the clamping device with contacted main conductor and branch conductor, the outer seal of the clamping device and the cables connected there being shown in accordance with the method described in patent application P 37 10 546.8.
  • a shrink sleeve (37) is used to seal the main clamp (2), which has a recess in the region of the branching off of the connecting web (16). To assemble the shrink sleeve, this recess must first be put over the branch clamp (7), and then the shrink sleeve (37) can then be wound around the main clamp and the main conductor and its cable coming in and out there and shrink-fit by heat.
  • a piece of shrink tubing (36) is used which, in contrast to a "shrink sleeve", is connected in the circumferential direction as a tube.
  • a hot melt adhesive On the inside of the shrink sleeve and the piece of shrink tubing there is a hot melt adhesive which, through the molding during the shrinking process, seals the conductors.
  • An additional outer shrink sleeve (38) is used to jointly seal several single-phase clamping devices.
  • the main terminal (2) and the branch terminal, as well as the indicated sections of the main conductor and the branch conductor corresponding to FIG. 1, are shown in a top view, the electrical contact parts running through the connecting web (16) being indicated by dashed lines are.
  • the inner shrink sleeve (37) and the outer shrink sleeve (38) as well as the shrink tube piece (36) sealing the branch clamp (7) are only indicated in cross section for differentiation.
  • the shrink sleeve (37) Due to the special shape of the clamping device and the connecting web (16) for the end of the branch terminal in the end area laterally above the main terminal, it is in principle possible to use the shrink sleeve (37) without creating a recess. Execution of the connecting web (16) branching off laterally from the main terminal only to lead to this branch.
  • the shrink sleeve (37) lies partly on the cable sheath of the main conductor or the wall extension (25) of the main terminal, which is partially guided laterally around the cable sheath, as well as the remaining part of the insulating body (13) of the main terminal, and is inserted there by means of an inserted plastic or elastic Shaped body sealed to the outside.
  • the shrink sleeve (37) also has a hot-melt adhesive with which the molded element introduced seals the main conductor during the molding process during the shrinking process.
  • Such a glue-in plastic molding element (39) is shown in FIG. 14, this part being squeezed by the shrink sleeve (37) during the shrinking process and thus lying tightly against the conductor and the insulating body (13) of the main terminal.
  • the section of the insulating body between the end of the bow-shaped molded body (6) and the location of the branch of the connecting web (16) must have a length corresponding to the requirements for Seals, e.g. B. have a length of at least 2 cm.
  • the shrink sleeve (37) is wound in the area in front of the branch of the connecting web (16) around the main conductor guided below the main body of the main terminal or the shaped element (39) surrounding it from below and the upper insulating body (13) of the main body of the main terminal.
  • a plastic sealing adhesive such as a silicone sealing compound, is used in the gusset area between the main cable and the branch cable.

Abstract

The invention relates to a clamping device (1) with which a branch can be produced on a main conductor of a live cable. Contact is made with the aid of cutting screws (3) which engage in the clamping channels (8). The base (5) of the main clamp (2) and of the branch clamp (7) are designed externally as an insulating housing (13, 14) and are connected to one another via a connecting web (16). Shrink fittings (36, 37, 38) are used in this case for the required protection against external influences. <IMAGE>

Description

Die Erfindung betrifft eine Klemmvorrichtung zur Herstellung eines Abzweiges an dem Hauptleiter eines unter Spannung stehenden Spannungskabels mit einer auf dem ungeschnittenen Hauptleiter aufsetzbaren Hauptklemme und weiterhin mit einer beabstandeten Abzweigklemme zur Aufnahme des Endes eines Abzweigleiters in einem Klemmkanal, der zur Kontaktierung eine Druckschraube enthält.The invention relates to a clamping device for producing a branch on the main conductor of a live voltage cable with a main terminal that can be placed on the uncut main conductor and also with a spaced branch terminal for receiving the end of a branch conductor in a clamping channel that contains a pressure screw for contacting.

Eine derartige Klemmvorrichtung ist gemäß der Patentanmeldung EP-A-0 285 079 beschrieben, wobei dieses Dokument nicht vorveröffentlicht ist und somit unter Ant. 54 (3) EPÜ fällt.Such a clamping device is described in accordance with patent application EP-A-0 285 079, this document not being prepublished and thus falling under Ant. 54 (3) EPC.

Sie weist zur Durchdringung der Isolation des jeweils zu kontaktierenden Hauptleiters eine Frässchraube und zum längsseitigen Verschluß ihres den zu kontaktierenden Abschnitt des Hauptleiters führenden Aufnahmekanals einen auf einem Grundkörper aufschiebbaren Formkörper auf, wobei die einzelnen elektrischen Kontaktteile jeweils in einem aus druck-und formfestem, elektrisch isolierendem Kunststoff bestehenden Isolierkörper aufgenommen sind und über einen Verbindungssteg den Grundkörper der Hauptklemme mit dem Grundkörper der Abzweigklemme verbinden, wobei in dem Verbindungssteg eine Verbindungsschiene geführt ist, welche die Kontaktteile der Hauptklemme und der Abzweigklemme miteinander verbindet bzw. kontaktiert, und wobei der Grundkörper der Hauptklemme Hinterschneidungen und Ansätze aufweist, über welche unter Bildung einer nach unten und/oder seitlich sich öffnenden Einführöffnung der an die Ansätze und Hinterschneidungen angepaßte und dort nach außen abgerundete Formkörper aufschiebbar ist.It has a milling screw for penetrating the insulation of the main conductor to be contacted and for the longitudinal closure of its receiving channel leading the portion of the main conductor to be contacted has a molded body which can be pushed onto a base body, the individual electrical contact parts each in a pressure-resistant and dimensionally stable, electrically insulating Plastic existing insulating body are included and connect the main body of the main terminal with the main body of the branch terminal via a connecting web, wherein a connecting rail is guided in the connecting web, which connects or contacts the contact parts of the main terminal and the branch terminal with each other, and wherein the main body of the main terminal undercuts and has lugs, via which, with the formation of a downward and / or laterally opening insertion opening, the one adapted to the lugs and undercuts and rounded off there Molded body can be pushed on.

Diese einphasige Klemmvorrichtung erlaubt die Herstellung eines Abzweiges an Spannungskabeln, wobei mit oder ohne Potentialabschaltung auf den getrennten Hauptleitern das Hauptkabels das Anklemmen jeweils eines Abzweigleiters mittels dieser Klemmvorrichtung an einen bestimmten Hauptleiter erfolgen kann. Es ist dabei möglich, die anschließende Abdichtung der Abzweigstelle und den mechanischen Schutz gegen äußere Krafteinwirkungen einfach und schnell herzustellen, wobei Schrumpfgarnituren Verwendung finden.This single-phase clamping device allows the production of a branch on voltage cables, with or without potential disconnection on the separate main conductors the main cable can be connected to a particular main conductor by means of this clamping device. It is possible to make the subsequent sealing of the branch point and the mechanical protection against external forces quickly and easily, using shrink fittings.

Die Hauptklemme der vorbeschriebenen Klemmvorrichtung weist dabei einen Grundkörper auf, welcher nach unten eine Verlängerung in Form einer etwa C-förmigen Gestalt aufweist, wobei innerhalb dieser der durch die Hauptklemme zu kontaktierende Hauptleiter geführt wird und die seitliche Einführöffnung an den seitlichen Schenkeln der C-Form Ansätze und Hinterschneidungen aufweist, über welche ein angepaßter Formkörper unter längsseitigem Verschluß des Aufnahmekanals aufschiebbar ist.The main clamp of the clamping device described above has a base body which has an extension downward in the form of an approximately C-shaped shape, within which the main conductor to be contacted by the main clamp and the lateral insertion opening on the side legs of the C-shape are guided Has approaches and undercuts, by means of which an adapted molded body can be slid on with the longitudinal closure of the receiving channel.

Diese Ausbildung des Grundkörpers der Hauptklemme sowie des seitlich aufschiebbaren Formkörpers, wie auch die Anlage und Ausbildung des unter einer zweifachen gegensinnigen Abwinklung frei durch den gehäuseartigen Isolierkörper der Hauptklemme in den beabstandeten ebenfalls gehäuseartigen Isolierkörper der Abzweigklemme und durch den mittig dazu angelegten hohlen Verbindungssteg geführten Kontaktteiles, erlaubt aber nur eine unvollkommene Lagerung des Hauptleiters im Aufnahmekanal der Hauptklemme. Da die durch den auf den Grundkörper seitlich aufschiebbaren Formkörper zu verschließende Einführöffnung seitlich zwischen den Schenkeln der C-Form des Grundkörpers der Hauptklemme angelegt ist, bilden sich in dem Klemmenkörper Spannungen aus, welche zu einer Verdrehung des unter dem Andruck der Frässchraube stehenden Hauptleiters führen kann. Aufgrund der einseitigen Belastung der Hauptklemme seitlich der Öffnung der C-Form des Grundkörpers der Hauptklemme verbiegen sich dabei die Ansätze an den seitlichen Schenkeln der C-Form sowie auch die Ansätze an den Hinterschneidungen des dort aufzuschiebenden Formkörpers. Eine Fertigung des Klemmenkörpers aus formstabilem und druckfestem Kunststoffmaterial stößt insofern bei Verwendung üblicher, elektrisch isolierender Kunststoff-Spritzgußmaterialien auf erhebliche Schwierigkeiten. Das 2-fach gegensinnig abgewinkelte Kontaktteil ist zudem im Innern der Isoliergehäuse bzw. des Aufnahmekanals der Klemme lose und ungeschützt geführt.This design of the main body of the main terminal and the laterally slidable molded body, as well as the installation and formation of the under two double opposite bends freely through the housing-like insulating body of the main terminal in the spaced, also housing-like insulating body of the junction terminal and through the central part of the hollow connecting web led contact part, but only allows an imperfect storage of the main conductor in the receiving channel of the main terminal. Since the insertion opening to be closed by the molded body which can be slid onto the base body laterally is created between the legs of the C-shape of the main body of the main clamp, tensions form in the clamp body which lead to a twisting of the under the pressure of the milling screw standing executive. Due to the one-sided loading of the main clamp on the side of the opening of the C-shape of the main body of the main clamp, the lugs on the side legs of the C-shape and the lugs on the undercuts of the molded body to be slipped there bend. Manufacturing the clamp body from dimensionally stable and pressure-resistant plastic material therefore encounters considerable difficulties when using conventional, electrically insulating plastic injection molding materials. The 2-way angled contact part is also loose and unprotected inside the insulating housing or the receiving channel of the terminal.

Aus der US-A-3 191 139 ist weiterhin eine Abzweigvorrichtung für Kabel bekannt. Die Hauptklemme und die Abzweigklemme diesen Abzwiegvorrichtung sind über einen elektrisch leitenden Bogen miteinander verbunden, wobei die Klemmung des Hauptkabels und des Abzweigenden Kabels jeweils mit Hilfe einen Klemmschraube erfolgt.From US-A-3 191 139 a branching device for cables is also known. The main terminal and the branch terminal of this weighing device are connected to one another via an electrically conductive bend, the main cable and the branching cable being clamped in each case with the aid of a clamping screw.

So ergibt sich für die vorliegende Erfindung die Aufgabe, eine Abzweigklemme für Kabelabzweig-Schrumpfgarnituren derart auszubilden, daß eine symmetrische Kraftverteilung innerhalb des Verschlußkörpers der Hauptklemme nach Kontaktierung des Hauptleiters auch bei den nach Herstellung des Abzweiges auf diesen Abzweig wirkenden äußeren Kräfte erfolgt, wobei insbesondere die Kunststoffteile der Klemme in diesem Bereich formstabil ausgebildet sein sollen, und eine sichere Kontaktierung der Leiter über lange Zeit gegeben ist. Die gestellte Aufgabe wird nun mit Hilfe einer Klemmvorrichtung der eingangs beschriebenen Art nach den Merkmalen des Patentanspruches 1 gelöst.Thus, the task for the present invention is to design a branch clamp for cable branch shrink fittings in such a way that a symmetrical distribution of force within the closure body of the main terminal after contacting the main conductor also occurs with the external forces acting on this branch after the branch has been produced, in particular the Plastic parts of the clamp should be dimensionally stable in this area, and there is a reliable contacting of the conductors over a long period of time. The object is now achieved with the aid of a clamping device of the type described in the introduction according to the features of patent claim 1.

Indem erfindungsgemäß das abgewinkelte aus den beiden Kontaktteilen der Haupt- und der Abzweigklemme sowie der Verbindungsschiene gebildete Bauteil entweder innerhalb des Kunststoffmaterials der Wandung der Grundkörper der Haupt- und Abzweigklemme sowie des Verbindungssteges all - seitig eingebettet oder von außen damit umspritzt ist, und damit oberhalb des Aufnahmekanals des Hauptleiters fest gelagert ist, behält dieses Bauteil seine vorgegebenen Lage auch bei größeren äußeren Druck- und Zugbelastungen auf den Abzweig bei. Relativ zum kontaktierten Hauptleiter sind somit keine Bewegungen mehr möglich.According to the invention, the angled component formed from the two contact parts of the main and the branch terminal and the connecting rail is embedded on all sides within the plastic material of the wall of the main body of the main and branch terminal and the connecting web, or is extrusion-coated therewith, and thus above the Receiving channel of the main conductor is fixed, this component maintains its predetermined position even with larger external pressure and tensile loads on the branch. Movements relative to the contacted main conductor are therefore no longer possible.

Indem die beiden Kontaktteile und die Verbindungsschiene als U-förmig abgebogenes oder abgewinkeltes Bauteil ausgebildet sind, läßt sich die Abzweigklemme über einen Großteil der Länge des Grundkörpers der Hauptklemme parallel zu diesem führen. Der Isolierkörper der Abzweigklemme, mit dem in ihm angeordneten, vorzugsweise einen Klemmkanal für den Abzweigleiter bildenden Kontaktteil, kommt dabei im seitlichen Abstand des im Durchmesser mehrfach größer ausgebildeten Hauptklemmkörpers zu liegen.By using the two contact parts and the connecting bar as U-shaped bent or angled component are formed, the branch terminal can run parallel to this over a large part of the length of the main body of the main terminal. The insulating body of the branch clamp, with the contact part arranged in it, preferably forming a clamping channel for the branch conductor, comes to lie at the lateral spacing of the main clamping body, which has a larger diameter.

Äußere Belastungen wirken dabei über die gesamte Länge der Klemmvorrichtung gleichmäßig sowohl auf die Hauptklemme als auch auf die Abzweigklemme. Auf Grund der Anlage des Verbindungssteges am äußeren oberen Ende zwischen den Grundkörpern der Hauptklemme und der Abzweigklemme , der somit gegebenen parallelen seitlichen Anlage dieser Grundkörper und der zusätzlichen Führung der äußeren Oberseite dieser Grundkörper der Klemmvorrichtung auf einer über einen Winkel (α) radial nach unten zur Mitte des Abzweiges abgebogenen Radialfläche werden dabei von außen auf mehrere, um die Mitte des Abzweiges kreisförmig angeordnete Klemmvorrichtungen einwirkende Kräfte unter gegenseitiger seitlicher Abstützung der benachbarten Klemmvorrichtungen in radialer Richtung auf die Mitte des Abzweiges geführt.External loads act uniformly on both the main terminal and the branch terminal over the entire length of the clamping device. Due to the contact of the connecting web at the outer upper end between the main bodies of the main clamp and the branch clamp, the parallel lateral contact of these basic bodies and the additional guidance of the outer upper side of these basic bodies of the clamping device on an angle (α) radially downwards Radial surface bent in the middle of the branch is guided from the outside to a plurality of forces acting circularly around the center of the branch, with mutual lateral support of the neighboring clamps in the radial direction onto the center of the branch.

Ferner ist eine symmetrische Ausbildung und Anordnung des an der Unterseite des Grundkörpers der Hauptklemme aufzuschiebenden und dort den Hauptleiter festlegenden Formköpers der Klemme möglich. Der Formkörper läßt sich dabei seitlich, insbesondere auch im oberen Bereich fast über die gesamte Länge des Grundkörpers der Hauptklemme bis zum Abzweig des Verbindungssteges der Hauptklemme festlegen. Bei auf dem Hauptleiter im Aufnahmekanal wirkenden Kräften ist somit eine gleichmäßige Krafteinleitung auf der linken und rechten Seite der Hauptklemme möglich. Um diese gleichmäßige Krafteinleitung innerhalb des Aufnahmekanals und auf den Klemmenkörper zu verbessern ist dabei der Grundkörper der Hauptklemme als ein länglicher, von oben seitlich nach außen schalenförmig gewölbter, die Außenseite des im Querschnitt abgerundeten Hauptleiters von oben überdeckender Isolierkörper ausgebildet, wobei vorzugsweise lediglich ein relativ schmaler Formkörper Verwendung findet und für diesen lediglich im vorderen Bereich des Grundkörpers der Hauptklemme seitlich der Frässchraube Parallelführungen angelegt sind. In Längsrichtung des Isolierkörpers, symmetrisch an der rechten und linken Außenseite weisen diese als Halterippen die zur Verriegelung und Führung des Formkörpers der Hauptklemme vorgesehenen Hinterschneidungen und Ansätze auf. Der Formkörper ist dabei auf die Halterippen in Paß- oder Preßsitz aufschiebbar, wobei vorzugsweise ein als U- / V-förmig ausgebildeter, seitlich in die Oberseite des Grundkörpers eingreifender Bügel als Formkörper verwendet wird. Die oberen Enden der spiegelsymmetrisch zur Mittelachse dieses Bügels ausgebildeten Bügelseiten sind dabei als Abbiegungen mit Hinterschneidungen und Ansätzen ausgebildet, welche jeweils in die entsprechenden Hinterschneidungen bzw. Ansätze eingreifen, welche an der Außenseite des Grundkörpers bzw. den dortigen Halterippen sich befinden.Furthermore, a symmetrical design and arrangement of the molded body of the terminal to be slipped on the underside of the main body of the main terminal and fixing the main conductor there is possible. The shaped body can be fixed laterally, in particular also in the upper region, almost over the entire length of the main body of the main terminal up to the branch of the connecting web of the main terminal. With forces acting on the main conductor in the receiving channel, a uniform application of force on the left and right side of the main terminal is thus possible. In order to improve this uniform introduction of force within the receiving channel and onto the terminal body, the main body of the main terminal is designed as an elongated insulating body which is curved in a bowl-shaped manner from above and laterally outwards and covers the outside of the main conductor, which is rounded in cross section, preferably only a relatively narrow one Shaped body is used and for this only in the front area of the main body of the main terminal parallel guides are placed on the side of the milling screw. In the longitudinal direction of the insulating body, symmetrically on the right and left outside, these have, as holding ribs, the undercuts and projections provided for locking and guiding the molded body of the main terminal. The molded body can be pushed onto the holding ribs in a snug or press fit, preferably a U / V-shaped bracket which laterally engages in the upper side of the base body is used as the molded body. The upper ends of the sides of the frame, which are mirror-symmetrical to the central axis of this frame, are designed as bends with undercuts and shoulders, which each engage in the corresponding undercuts or shoulders, which are located on the outside of the base body or the holding ribs there.

Da das einstückige die Kontaktteile und die Verbindungsschiene bildende Bauteil in dem Körper der Klemmvorrichtung selbst fest gelagert ist und dabei von dessen Kunststoffmaterial fest umspritzt ist, ist dabei eine Abfederung des Kontaktteiles im Bereich der Frässchraube gegenüber dem Klemmenkörper nicht möglich. Aus diesem Grunde wird vorzugsweise im Schenkelwinkel des U- bzw. V-förmig ausgebildeten bügelartigen Formkörpers ein Federelement eingelegt, welches den dort eingebrachten Hauptleiter gegen die Frässchraube federnd andrückt. Das Federelement besteht dabei aus einer Blattfeder, welche über eine Ausnehmung federnd gelagert ist und gegen die konvexe Unterseite einer zylinderwandabschnittartig gewölbten Kerbplatte wirkt, welche auf ihrer konkaven Innenseite Kerbzähne oder Querrippen aufweist, welche vorzugsweise eine freie Steghöhe besitzen, welche größer als die Isolationsdicke der Isolation des zu kontaktierenden Hauptleiters ist.Since the one-piece component that forms the contact parts and the connecting rail is firmly mounted in the body of the clamping device itself and is encapsulated with its plastic material, it is not possible to cushion the contact part in the area of the milling screw relative to the terminal body. For this reason, a spring element is preferably inserted in the leg angle of the U-shaped or V-shaped bow-shaped molded body, which resiliently presses the main conductor introduced there against the milling screw. The spring element consists of a leaf spring which is resiliently mounted via a recess and acts against the convex underside of a notched plate which is curved in the manner of a cylinder wall section and which has notched teeth or transverse ribs on its concave inside, which preferably have a free web height which is greater than the insulation thickness of the insulation of the executive to be contacted.

Auf diese Weise ist es möglich, den Hauptleiter innerhalb des durch die Unterseite des Grundkörpers der Hauptklemme sowie die Innenseite des bügelförmigen Formkörpers begrenzten Aufnahmeraumes fest zu lagern, wobei der Hauptleiter zwischen der Kerbplatte und der Fräschraube fest eingeklemmt und verspannt selbst bei erweichender Isolierung des Hauptleiters bleibt.In this way, it is possible to firmly support the main conductor within the receiving space delimited by the underside of the main body of the main clamp and the inside of the bow-shaped molded body, the main conductor being firmly clamped between the notch plate and the screw and remains tense even with softened insulation of the main conductor.

Ein weiterer Vorteil der Bauform der erfindungsgemäßen Klemmvorrichtung, bei welcher der Verbindungssteg zwischen dem Grundkörper der Hauptklemme und der Abzweigklemme erst am äußeren oberen Ende des Isolierkörpers der Hauptklemme angelegt ist, besteht ferner darin, daß die zur Abdichtung der Hauptklemme und des dort geführten Hauptleiters benötigte Schrumpfmanschette von einfacher rechtwinkliger Abmessung sein kann. Diese Schrumpfmanschette benötigt dabei im Gegensatz zu der Schrumpfmanschette zur Abdichtung der Klemmvorrichtung gemäß der Patentanmeldung P 37 10 546 keine "Aussparung", durch welche bei der vorbeschriebenen Klemmvorrichtung der dortige Verbindungssteg hindurchzuführen ist. Während nämlich bei der vorbeschriebenen älteren Klemmvorrichtung der Verbindungssteg etwa in der Mitte der Länge des Gehäuses der Hauptklemme angelegt ist, wobei über diesen Bereich die Schrumpfmanschette bis über die beiden Enden der Hauptklemme zu führen ist, muß bei der erfindungsgemäßen neuen Klemmvorrichtung die Schrumpfmanschette lediglich bis zu dem am Klemmenende angelegten Verbindungssteg geführt werden, wobei dort eine Abdichtung der Schrumpfmanschette gegenüber dem schalenförmig auf dem Hauptleiter aufliegenden und mit seiner gewölbten Außenfläche auf den Hauptleiter auslaufenden Isolierkörper der Hauptklemme möglich ist. Zur Abdichtung der Hauptklemme an der vor dem Verbindungssteg auslaufenden Seite genügt dabei schon eine Dichtungslänge von z. B. 2 cm. Raum für diese Dichtungslänge ist dabei auf dem äußeren Isolierkörper der Hauptklemme insofern gegeben, als das Ende des bügelförmigen Formkörpers von der Stelle des seitlichen Abzweiges des Verbindungssteges in einem entsprechenden Mindestabstand von z. B. 2 cm angeordnet ist. Zur Abdichtung gegen den Isolierkörper der Hauptklemme und den Hauptleiter ist dort ein elastisches oder plastisches Formelement vorgesehen, welches an dem Isolierkörper vorkonfektioniert oder bei der Montage einbringbar ist. In diesem Dichtungsabschnitt ist dabei der Isolierkörper der Hauptklemme bis auf einen an der Seite zum Abzweigleiter nach unten verlaufenden Wandungsfortsatz seitlich jeweils gleichmäßig ausgebildet. An der Stelle, wo das Formelement am Grundkörper der Hauptklemme zu befestigen ist, ist dabei der Wandungsfortsatz entfernt, so daß dort das Formelement einklebbar ist. Dieses Formelement wird dabei von außen mit dem Endabschnitt der dort auslaufenden Schrumpfmanschette umwickelt, so daß das Formelement in direktem Kontakt mit dem Schmelzkleber auf der Innenseite der Schrumpfmanschette während des Schrumpfvorganges gelangt und durch diese Anformung beim Schrumpfvorgang die Abdichtung des Hauptleiters bewirkt wird. Das Form- bzw. Dichtungselement wird dabei bei diesem Schrumpfvorgang durch die Schrumpfmanschette zusammengequetscht und liegt dabei dicht auf der Oberseite des Hauptleiters bzw. an der Innenseite der Schrumpfmanschette an.Another advantage of the design of the clamping device according to the invention, in which the connecting web between the main body of the main terminal and the branch terminal is only applied to the outer upper end of the insulating body of the main terminal, is that the shrink sleeve required to seal the main terminal and the main conductor guided there can be of simple rectangular dimensions. In contrast to the shrink sleeve to seal the clamping device according to patent application P 37 10 546, this shrink sleeve does not require a "recess" through which the connecting web there is to be passed in the case of the above-described clamping device. While in the previously described older clamping device the connecting web is placed approximately in the middle of the length of the housing of the main terminal, the shrink sleeve having to be guided over this area over the two ends of the main clamp, in the new clamping device according to the invention the shrink sleeve only has to be up to the connecting web applied at the terminal end can be guided, where it is possible to seal the shrink sleeve against the insulating body of the main terminal, which rests in a shell-like manner on the main conductor and extends with its curved outer surface onto the main conductor. To seal the main terminal on the side running out in front of the connecting web, a seal length of z. B. 2 cm. Space for this length of seal is given on the outer insulating body of the main terminal insofar as the end of the bow-shaped body from the location of the side branch of the connecting web in a corresponding minimum distance of z. B. 2 cm is arranged. For sealing against the insulating body of the main terminal and the main conductor, an elastic or plastic molded element is provided there, which is pre-assembled on the insulating body or can be inserted during assembly. In this sealing section the insulating body of the main terminal is in each case evenly formed laterally except for a wall extension running downward on the side to the branch conductor. At the point where the shaped element is to be fastened to the main body of the main clamp, the wall extension is removed so that the shaped element can be glued in there. This shaped element is wrapped from the outside with the end portion of the shrink sleeve that runs out there, so that the shaped element comes into direct contact with the hot-melt adhesive on the inside of the shrink sleeve during the shrinking process and the sealing of the main conductor is brought about by this molding during the shrinking process. During this shrinking process, the form or sealing element is squeezed together by the shrink sleeve and lies tightly on the top of the main conductor or on the inside of the shrink sleeve.

Um eine geeignete Abdichtung des Grundkörpers an der Seite des U-förmigen aufzuschiebenden Formkörpers der Hauptklemme zu erreichen, ist der Grundkörper der Hauptklemme an dieser vorderen, der Abzweigung des Verbindungssteges entgegengesetzten Seite ebenfalls ballig ausgebildet, wobei die dort durch die rechte und linke seitliche Halterippe gebildeten Vorsprünge und Hinterschneidungen durch den aufgeschobenen U-förmigen Formkörper geschlossen sind. Auf diese Weise läßt sich an diesem Ende der Hauptklemme eine optimale Abdichtung zum Hauptleiter durch die dort im Schrumpfvorgang anzudichtende Schrumpfmanschette erreichen.In order to achieve a suitable sealing of the main body on the side of the U-shaped molded body of the main clamp to be pushed on, the main body of the main clamp is also convex on this front side opposite the branching of the connecting web, the retaining rib formed there by the right and left side Protrusions and undercuts are closed by the pushed-on U-shaped molded body. In this way, an optimal seal to the main conductor can be achieved at this end of the main clamp by the shrink sleeve to be sealed there in the shrinking process.

Die Abdichtung der Abzweigklemme des Abzweigleiters erfolgt dabei vorzugsweise in herkömmlicher Weise über ein Schrumpfschlauchstück, welches über das Ende des Abzweigleiters bzw. die noch nicht kontaktierte Abzweigklemme gezogen und dann nach Anschluß des Abzweigleiters positioniert und auf die Abzweigklemme und den Abzweigleiter aufgeschrumpft wird.The branch clamp of the branch conductor is preferably sealed in a conventional manner via a piece of shrink tubing which is pulled over the end of the branch conductor or the as yet uncontacted branch clamp and then positioned after connection of the branch conductor and shrunk onto the branch clamp and the branch conductor.

Die Abdichtung des Grundkörpers der Hauptklemme gegenüber dem Hauptleiter kann natürlich auch durch eine Schrumpfmanschette derart in herkömmlicher Weise erfolgen, daß diese um den Grundkörper der Hauptklemme und den aufgeschobenen U-förmigen Formkörper über die gesamte Länge der Klemmvorrichtung hinaus umwickelt wird. Dazu muß die Schrumpfmanschette aber eine Ausnehmung besitzen, so daß die Schrumpfmanschette mit dieser Ausnehmung zunächst über die seitliche Abzweigklemme und den Verbindungssteg zwischen Haupt- und Abzweigklemme gestülpt werden kann.The sealing of the main body against the main terminal the main conductor can of course also be done in a conventional manner by means of a shrink sleeve such that it is wrapped around the main body of the main clamp and the pushed-on U-shaped molded body over the entire length of the clamping device. For this purpose, the shrink sleeve must have a recess, so that the shrink sleeve with this recess can first be put over the lateral branch clamp and the connecting web between the main and branch clamp.

Die Erfindung wird nun anhand eines in 14 Figuren in den Zeichnungen gezeigten Ausführungsbeispieles näher beschrieben.The invention will now be described in more detail with reference to an embodiment shown in the figures in 14 figures.

In den Zeichnungen zeigen:

Figur 1:
Eine Draufsicht auf die Klemmvorrichtung bestehend aus einer Hauptklemme und einer Abzweigklemme, wobei deutlich die ballige Ausbildung des Grundkörpers der Hauptklemme und des seitlich aufschiebbaren Formkörpers zu erkennen ist, sowie die seitliche, parallele Anlage der Abzweigklemme;
Figur 2:
eine Seitenansicht der Klemmvorrichtung auf den Grundkörper der Hauptklemme mit seitlich aufgeschobenem Formkörper an der linken Seite des Grundkörpers, unter Darstellung des durch einen Verbindungssteg seitlich abgezweigten Grundkörpers der Abzweigklemme;
Figur 3:
eine Vorderansicht der Klemmvorrichtung, insbesondere unter Verdeutlichung der Anlage des Grundkörpers und des Formkörpers der Hauptklemme sowie des Verbindungssteges und des Grundkörpers der Abzweigklemme relativ zueinander, unter Andeutung der dort geführten Kontaktteile und der diese Teile kontaktierenden Verbindungsschiene;
Figur 4:
eine Seitenansicht auf die die Abzweigklemme verdeckende Seite der Hauptklemme bzw. deren Grundkörper mit im rechten Teil aufgeschobenem Formkörper;
Figur 5:
eine Querschnittsansicht gemäß der Schnittlinie AB der Figur 1;
Figur 6:
eine Querschnittsansicht gemäß der Schnittlinie CD der Figur 1;
Figur 7:
eine Querschnittsansicht gemäß der Schnittlinie EF der Figur 1;
Figur 8:
eine Seitenansicht des bügelförmigen seitlich auf den Grundkörper aufschiebbaren Formkörpers;
Figur 9:
eine Querschnittsansicht gemäß der Schnittlinie AB der Figur 8;
Figur 10:
eine Querschnittsansicht gemäß der Schnittlinie GH der Figur 9 unter Verdeutlichung der im Schenkelwinkel des Formkörpers angelegten Ausnehmung zur Aufnahme der Kerbzähne oder Querrippen tragenden metallischen Kerbplatte, und
Figur 11:
die Einzelheit C gemäß Figur 9;
Figur 12:
eine schematische Querschnittsdarstellung der Anlage der als Gegenlager für den Hauptleiter in dem Schenkelwinkel des bügelförmigen Formkörpers angelegten Kerbplatte, wobei deutlich die Lagerung dieser Kerbplatte oberhalb einer Blattfeder und die Einbringung dieser Teile in einer Längsausnehmung gemäß Figur 3, 5, 8 und 9 zu erkennen ist.
Figur 13:
Eine Draufsicht auf zwei Klemmvorrichtungen gemäß Figur 1, wobei die Abdichtung der Hauptklemme mit einem äußeren Schrumpfschlauchstück, die Abdichtung der Abzweigklemme mit einer Schrumpfmanschette und die äußere gemeinsame Abdichtung der Klemmvorrichtung und des Haupt- und Abzweigleiters mit einer äußeren Schrumpfmanschette gezeigt ist.
Figur 14:
eine Seitenansicht auf die Seite der Hauptklemme gemäß Fig. 4,unter Darstellung des zur Abdichtung der Schrumpfmanschette dienenden elastischen Formkörpers, welcher in Höhe des Verbindungssteges in der Verlängerung des Aufnahmekanals eingeklebt ist und eine vereinfachte Abdichtung ermöglicht.
The drawings show:
Figure 1:
A top view of the clamping device consisting of a main clamp and a branch clamp, the spherical design of the main body of the main clamp and the laterally slidable molded body can be clearly seen, as well as the lateral, parallel contact of the branch clamp;
Figure 2:
a side view of the clamping device on the main body of the main clamp with laterally pushed molded body on the left side of the main body, showing the basic body of the branch clamp branched off laterally by a connecting web;
Figure 3:
a front view of the clamping device, in particular clarifying the contact of the base body and the molded body of the main terminal and the connecting web and the base body of the branch terminal relative to each other, indicating the contact parts guided there and the connecting rail contacting these parts;
Figure 4:
a side view of the side of the main terminal concealing the branch terminal or its base body with molded body pushed in the right part;
Figure 5:
a cross-sectional view along the section line AB of Figure 1;
Figure 6:
a cross-sectional view along the section line CD of Figure 1;
Figure 7:
a cross-sectional view along the section line EF of Figure 1;
Figure 8:
a side view of the bow-shaped molded body laterally slidable on the base body;
Figure 9:
a cross-sectional view along the section line AB of Figure 8;
Figure 10:
9 shows a cross-sectional view along the section line GH of FIG. 9, illustrating the recess made in the leg angle of the shaped body for receiving the serrated teeth or transverse ribs, and
Figure 11:
the detail C according to Figure 9;
Figure 12:
is a schematic cross-sectional view of the system of the notch plate created as a counter-bearing for the main conductor in the leg angle of the bow-shaped shaped body, the bearing of this notch plate above a leaf spring and the introduction of these parts in a longitudinal recess according to FIGS. 3, 5, 8 and 9 being clearly visible.
Figure 13:
A plan view of two clamping devices according to Figure 1, showing the sealing of the main clamp with an outer shrink tube piece, the sealing of the branch clamp with a shrink sleeve and the outer joint seal of the clamping device and the main and branch conductor with an outer shrink sleeve.
Figure 14:
a side view of the side of the main clamp according to FIG. 4, showing the elastic molded body used to seal the shrink sleeve, which is glued in at the level of the connecting web in the extension of the receiving channel and enables simplified sealing.

Wie der Draufsicht der Figur 1 auf die in den Zeichnungen dargestellte Klemmvorrichtung (1) zu entnehmen ist, besteht diese aus einer Hauptklemme (2), wobei seitlich rechts neben dieser eine Abzweigklemme (7) angelegt ist. Hauptklemme (2) und Abzweigklemme (7) sind dabei am oberen Ende der Hauptklemme durch einen Verbindungssteg (16) verbunden. Innerhalb dieses Verbindungssteges (16) ist dabei eine Verbindungsschiene (12) eingebracht, welche die in Längsrichtung der Hauptklemme und der Abzweigklemme verlaufenden elektrischen Kontaktteile dieser Klemmen miteinander verbindet.As can be seen from the top view of FIG. 1 of the clamping device (1) shown in the drawings, it consists of a main clamp (2), a branch clamp (7) being placed on the right next to it. The main terminal (2) and branch terminal (7) are connected at the upper end of the main terminal by a connecting bar (16). A connecting rail (12) is inserted within this connecting web (16), which connects the electrical contact parts of these terminals running in the longitudinal direction of the main terminal and the branch terminal.

Innerhalb des Kontaktteiles der Abzweigklemme ist eine Klemmkanalhülse ausgebildet, wobei das Kontaktteil mit dem in der Hülse auslaufenden Abschnitt von außen mit elektrisch isolierendem druckfesten Kunststoffmaterial umgeben ist. Durch diesen äußeren Mantel und die Klemmkanalhülse ist eine Bohrung angelegt, in welcher eine Druckschraube (9) zum Kontaktieren des dort festzulegenden Endes des Abzweigleiters verschraubbar ist. Der Grundkörper (17) dieser Abzwei klemme weist dabei außen einen Isolierkörper (14) auf, welcher seitlich am Ende in den dort nach links abgebogenen Verbindungssteg (16) übergeht, welcher seinerseits in den äußeren Isolierkörper (13) der Hauptklemme mündet. Die Isolierkörper (13, 14) sowie das äußere Isoliermaterial des Verbindungssteges (12) sind dabei als einstückiges Kunststoffteil im Spritzgußverfahren hergestellt, wobei ein äußerst druck- und formfestes Material Verwendung findet. Die Verbindungsschiene (12) und das elektrische Kontaktteil (10) der Hauptklemme sind dabei allseitig von dem Kunststoffmaterial umspritzt, so daß bis auf den Bohrungsbereich der Kontaktschraube (3) der Hauptklemme diese beiden Teile von außen nicht erkennbar oder berührbar sind.A clamping channel sleeve is formed within the contact part of the branch terminal, the contact part with the section running out in the sleeve being surrounded from the outside with electrically insulating, pressure-resistant plastic material. A bore is made through this outer jacket and the clamping channel sleeve, in which a pressure screw (9) can be screwed for contacting the end of the branch conductor to be fixed there. The main body (17) of this Abzwei clamp has an outer insulating body (14) which laterally merges at the end into the connecting web (16) bent there to the left, which in turn opens into the outer insulating body (13) of the main terminal. The insulating body (13, 14) and the outer insulating material of the connecting web (12) are made as a one-piece plastic part in the injection molding process, an extremely pressure-resistant and dimensionally stable material being used. The connecting rail (12) and the electrical contact part (10) of the main terminal are encapsulated on all sides by the plastic material, so that apart from the bore area of the contact screw (3) of the main terminal, these two parts are not recognizable or touchable from the outside.

Wie deutlich im Vergleich der Figuren 1 und 3 erkennbar ist, besteht die Hauptklemme (2) aus dem in Figur 1 in Draufsicht dargestellten länglichen seitlich abgerundeten Grundkörper (5) und einem im vorderen Bereich des Grundkörpers aufschiebbaren, sich nach unten erstreckenden Formkörper (6). Zwischen der Unterseite des Grundkörpers und der Innenseite des aufgeschobenen Formkörpers wird dabei ein Aufnahmeraum (22) gebildet, in welcher der ungeschnittene Hauptleiter zur Herstellung des Abzweiges einzubringen ist. Zu diesem Zweck wird der Formkörper (6) von dem vorderen Abschnitt des Grundkörpers (5) abgezogen, über den nicht geschnittenen Hauptleiter gestülpt und dann über den auf den Hauptleiter aufgelegten, schalenförmig sich über den Hauptleiter wölbenden Grundkörper geschoben und dort festgelegt. Die Arretierung des Formkörpers erfolgt dabei in Prinzip gleichzeitig mit der Kontaktierung des Hauptleiters, welcher in der Einführöffnung der Klemme durch die Frässchraube (3) in dem Schenkelwinkel (31) des bügelförmigen Formkörpers (6) festgesetzt wird. ( s. Fig.9 )As can clearly be seen in the comparison of FIGS. 1 and 3, the main clamp (2) consists of the elongated, laterally rounded base body (5) shown in plan view in FIG. . A receiving space (22) is formed between the underside of the base body and the inside of the pushed-on molded body, in which the uncut main conductor for producing the branch is to be inserted. For this purpose, the molded body (6) is pulled off the front section of the main body (5), put over the main conductor not cut and then pushed over the main body which is placed on the main conductor and bulges over the main conductor and is fixed there. The locking of the molded body takes place in principle simultaneously with the contacting of the main conductor, which is fixed in the insertion opening of the clamp by the milling screw (3) in the leg angle (31) of the bow-shaped molded body (6). (see Fig. 9)

Dieses Gegenlager zur Frässchraube (3) wird dabei gemäß Figur 12 durch eine Kerbplatte (33) und eine gegen diese anliegende Blattfeder (35) gebildet. Diese beiden Teile sind dabei in einer Ausnehmung (32) gelagert, welche sich nach innen öffnend in dem Kunststoffmaterial des Formkörpers (6) angelegt ist.This counter bearing to the milling screw (3) is formed according to FIG. 12 by a notch plate (33) and a leaf spring (35) resting against it. These two parts are mounted in a recess (32) which is opened inwards in the plastic material of the molded body (6).

Wie deutlich der Querschnittsdarstellung der Figur 3 zu entnehmen, weist dabei der U-förmig ausgebildete Formkörper spiegelsymmetrisch verlaufende Bügelseiten mit an deren oberen Enden entsprechend spiegelsymmetrisch zueinander verlaufenden Abbiegungen auf, welche Hinterschneidungen (27, 28) und Ansätze (29, 30) bilden.As can clearly be seen from the cross-sectional illustration in FIG. 3, the U-shaped shaped body has mirror-symmetrical bow sides with bends at their upper ends correspondingly mirror-symmetrical to one another, which form undercuts (27, 28) and shoulders (29, 30).

Diese Hinterschneidungen und Ansätze sind dabei über die gesamte Breite des Formkörpers (6) ausgebildet und wirken dabei mit seitlich oberhalb des Grundkörpers (5) der Hauptklemme angelegten Hinterschneidungen (18, 19) und Ansätzen (20, 21) zusammen. Diese Ansätze und Hinterschneidungen laufen ebenfalls in Längsrichtung des Grundkörpers, wobei alle Hinterschneidungen und Ansätze in Preßsitz bzw. Paßsitz aufeinanderbringbar sind. Die Ansätze (20, 21) des Grundkörpers (5) bilden dabei längliche Halterippen, welche von unten hinter die nach innen abgebogenen Ansätze (29, 30) der oberen Bügelenden eingreifen.These undercuts and shoulders are formed over the entire width of the shaped body (6) cooperate with undercuts (18, 19) and shoulders (20, 21) placed laterally above the main body (5) of the main clamp. These approaches and undercuts also run in the longitudinal direction of the base body, with all undercuts and approaches being press fit or snug fit. The shoulders (20, 21) of the base body (5) form elongated retaining ribs which engage from below behind the inwardly bent shoulders (29, 30) of the upper temple ends.

Wie deutlich der Querschnittsdarstellung der Figur 3 zu entnehmen, ist die Außenseite des Formkörpers (6) und die Oberseite des Grundkörpers (5) der Hauptklemme aufeinander derart abgestimmt, daß die Außenseiten kontinuierlich ineinander übergehen. Trotz des somit seitlich in den oberen Bereich des Grundkörpers der Hauptklemme eingreifenden Formkörpers (6) bildet somit die gesamte Oberseite des Klemmenkörpers eine kontinuierlich gewölbte Fläche, deren seitliche Ausnehmungen durch den aufgeschobenen Formkörper geschlossen sind. Diese angepaßte Formgebung von Formkörper und Grundkörper ist dabei auch seitlich und im vorderen Stirnbereich der Klemme gegeben, wobei dort alle nach außen vorstehenden Kanten und Ecken abgerundet sind. Die Außenfläche der Hauptklemme läßt sich somit ohne Schwierigkeiten durch eine Schrumpfmanschette gegenüber dem Kabelmantel des kontaktierten Hauptleiters abdichten. Von besonderem Vorteil für diese Abdichtung und die Führung des Hauptleiters in den Aufnahmekanal (4) der Hauptklemme ist dabei die Anlage eines Wandungsfortsatzes (25) des schalenförmig nach außen gebogenen Isolierkörpers (13) der Hauptklemme, wobei dieser Wandungsfortsatz bis nach unten in den Bereich des einzubringenden Hauptleiters gezogen ist und sich in Längsrichtung der Hauptklemme über den hinteren Bereich des Isolierkörpers (13) erstreckt und dabei unmittelbar die Innenseite des aufgeschobenen Formkörpers fortsetzt.As can clearly be seen from the cross-sectional illustration in FIG. 3, the outside of the molded body (6) and the top of the base body (5) of the main clamp are matched to one another in such a way that the outer sides continuously merge. In spite of the molded body (6) thus engaging laterally in the upper region of the main body of the main clamp, the entire upper side of the clamp body thus forms a continuously curved surface, the lateral recesses of which are closed by the pushed-on molded body. This adapted shape of the molded body and base body is also provided laterally and in the front end region of the clamp, where all the edges and corners projecting outwards are rounded off. The outer surface of the main terminal can thus be sealed against the cable jacket of the contacted main conductor without difficulty by means of a shrink sleeve. Of particular advantage for this seal and for guiding the main conductor into the receiving channel (4) of the main terminal is the creation of a wall extension (25) of the shell-shaped, outwardly bent insulating body (13) of the main terminal, this wall extension extending down into the area of the main terminal the main conductor to be inserted is pulled and extends in the longitudinal direction of the main terminal over the rear region of the insulating body (13) and thereby directly continues the inside of the pushed-on molded body.

Dieser Wandungsfortsatz (25) ist dabei deutlich in den Querschnittsdarstellungen der Figuren 6 und 7 nach den Schnitten E-F und C-D der Figur 1 zu erkennen. Der Wandungsfortsatz (25) weist dabei auf der Außenseite die gleiche Wölbung wie die Außenseite des Isolierkörpers (13) des Hauptklemmen-Grundkörpers (5) auf. Auf der Innenseite entspricht dabei die Wölbung dieses Wandungsfortsatzes der gewölbten Innenfläche des bügelförmigen Formkörpers (6), welche im einzelnen deutlich in Figur 3, 5 und 9 dargestellt ist.This wall extension (25) can be clearly seen in the cross-sectional representations of FIGS. 6 and 7 after the sections E-F and C-D of FIG. The wall extension (25) has the same curvature on the outside as the outside of the insulating body (13) of the main terminal base body (5). On the inside, the curvature of this wall extension corresponds to the curved inner surface of the bow-shaped shaped body (6), which is clearly shown in detail in FIGS. 3, 5 and 9.

Wie deutlich Figur 3 zu entnehmen, ist der Verbindungssteg (16) der Hauptklemme und der Abzweigklemme kreisbogenförmig nach unten um den Winkel (α) abgebogen, so daß die Abzweigklemme (7) neben der Hauptklemme (2) seitlich im unteren Bereich zu liegen kommt. Abzweigklemme und Hauptklemme bilden somit eine U-förmige Klemmvorrichtung, welche aufgrund der Abbiegung des Verbindungssteges mit ihrer oberen Außenseite auf einer äußeren Radialfläche geführt ist. Aufgrund dieser Formgebung ist es möglich, eine größere Anzahl von Klemmvorrichtungen (2) nebeneinander im Kreis anzuordnen und dabei verschiedene Hauptleiter eines Hauptkabels jeweils durch eine entsprechende Klemmvorrichtung zu kontaktieren. Die Klemmvorrichtungen lassen sich dabei im kompakter Weise nebeneinander anordnen, wobei aufgrund ihrer äußeren Formgebung von außen einwirkende Kräfte auf die Mitte dieser kreisförmigen Anordnung der Klemmvorrichtungen abgeführt werden.As can clearly be seen in FIG. 3, the connecting web (16) of the main terminal and the branch terminal is bent in a circular arc downwards by the angle (α), so that the branch terminal (7) lies laterally in the lower region next to the main terminal (2). Branch clamp and main clamp thus form a U-shaped clamping device which, due to the bending of the connecting web, is guided with its upper outer side on an outer radial surface. Because of this shape, it is possible to arrange a larger number of clamping devices (2) next to one another in a circle and to contact different main conductors of a main cable in each case by means of a corresponding clamping device. The clamping devices can be arranged side by side in a compact manner, with external forces acting on the center of this circular arrangement of the clamping devices due to their external shape.

In dem vorliegenden Ausführungsbeispiel beträgt dabei die Länge des Grundkörpers der Hauptklemme 8,5 cm und die Länge des Grundkörpers der Abzweigklemme 7 cm. Der Außendurchmesser der im Querschnitt kreisförmigen Abzweigklemme beträgt dabei etwa 2 cm und die maximalen Außenabmessungen des Grundkörpers der Hauptklemme im Querschnitt 5 cm bzw. 4 cm (Höhe bzw. Breite). Die Höhe des Formkörpers (6) beträgt dabei maximal 4,5 cm und die Breite der Bügelseiten des Formkörpers 3,5 cm, wobei die Wandungsstärke etwa 0,6 cm beträgt.In the present exemplary embodiment, the length of the main body of the main terminal is 8.5 cm and the length of the main body of the branch terminal is 7 cm. The outside diameter of the branch clamp, which is circular in cross section, is about 2 cm and the maximum outside dimensions of the main body of the main clamp are 5 cm or 4 cm in cross section (height or width). The height of the molded body (6) is a maximum of 4.5 cm and the width the bow sides of the molded body 3.5 cm, the wall thickness being about 0.6 cm.

In den Seitenansichten der Klemmvorrichtung ist dabei deutlich die längliche, an den Enden abgerundete Form der Hauptklemme (Grundkörper (5) bzw. Formkörper (6)) zu erkennen, wobei durch den auf der Seite der Abzweigklemme gelegene Wandungsfortsatz (25) der Grundkörper der Hauptklemme seitlich im Bereich dieser Abzweigklemme nach unten verlängert ist. Insofern wirkt der Wandungsfortsatz (25) zum einen als Stützkörper für die dort aufzuschrumpfende Schrumpfmanschette als auch als Schutz gegen einen Spannungsüberschlag zwischen den Haupt- und Abzweigleitern und als zusätzliche Halterung für den kontaktierten Hauptleiter.In the side views of the clamping device, the elongated shape of the main clamp (base body (5) or molded body (6)), which is rounded at the ends, can be clearly seen, the base body of the main clamp being shown by the wall extension (25) on the side of the branch clamp is extended laterally in the area of this branch terminal. In this respect, the wall extension (25) acts on the one hand as a support body for the shrink sleeve to be shrunk on there, as well as protection against a voltage flashover between the main and branch conductors and as an additional holder for the contacted main conductor.

Zur Verdeutlichung sind dabei in Figur 2 und 5 jeweils die Druckschraube (9) der Abzweigklemme und die Frässchraube (3) der Hauptklemme und die Führung der elektrischen Kontaktteile sowie der Verbindungsschiene (10, 11, 12) eingezeichnet. Ferner ist in Figur 2 der Formkörper (6) im linken Bereich der Klemmvorrichtung zu erkennen und-in der die Rückseite dieser Klemmvorrichtung darstellenden Figur 4-entsprechend rechts der Abbildung dieser Klemmvorrichtung.For clarification, the pressure screw (9) of the branch terminal and the milling screw (3) of the main terminal and the guidance of the electrical contact parts and the connecting rail (10, 11, 12) are shown in FIGS. 2 and 5. Furthermore, the shaped body (6) can be seen in FIG. 2 in the left region of the clamping device and — in FIG. 4, which represents the rear side of this clamping device — corresponding to the right of the illustration of this clamping device.

In Figur 6 und 7 läßt sich dabei deutlich die Einbettung der Kontaktteile (10, 11) sowie der Verbindungsschiene (12) innerhalb des Kunststoffmaterials der Isolierkörper (13, 14) sowie des Verbindungssteges (16) erkennen, wobei diese Leiterteile über ihren vollen Querschnitt massiv ausgebildet sind. Insofern ergibt sich eine absolut sichere Halterung dieser Kontaktteile in dem Isolierkörper (13, 14) der Haupt- bzw. Abzweigklemme sowie in dem Verbindungssteg (16). Insofern können diese Kontaktteile bei auf den Abzweig wirksam werdenden äußeren Kräften sich nicht innerhalb der Hauptklemme oder Abzweigklemme verschieben, so daß eine feste Lagerung des kontaktierten Hauptleiters zwischen der Frässchraube (3) und der Kerbplatte (33) gegeben ist. Von Bedeutung für diese unverschiebliche Lagerung des Hauptleiters ist dabei ebenfalls die symmetrische Ausbildung und Lagerung des Formkörpers (6), wobei der Hauptleiter von beiden Seiten gleichmäßig umgeben wird und die gleichen Stellkräfte auf ihn einwirken.In Figures 6 and 7, the embedding of the contact parts (10, 11) and the connecting rail (12) within the plastic material of the insulating body (13, 14) and the connecting web (16) can be clearly seen, these conductor parts massive over their full cross section are trained. In this respect, there is an absolutely secure mounting of these contact parts in the insulating body (13, 14) of the main or branch terminal and in the connecting web (16). In this respect, these contact parts cannot move within the main terminal or branch terminal when external forces become effective on the branch, so that a fixed bearing of the contacted Main conductor between the milling screw (3) and the notch plate (33) is given. Of importance for this immovable mounting of the main conductor is also the symmetrical design and mounting of the molded body (6), the main conductor being evenly surrounded by both sides and the same actuating forces acting on it.

Der Aufbau des unterhalb des Grundkörpers (5) der Hauptklemme den Aufnahmekanal (4) für den Hauptleiter seitlich und nach unten begrenzenden Formkörpers (6) ergibt sich im einzelnen aus den Figuren 8, 9 und 10. In der Seitenansicht des bügelförmigen Formkörpers(6) gemäß Figur 8 erkennt man deutlich die kontinuierliche Wölbung der Außenseite dieses U-förmigen Teils. Oberhalb des Formkörpers (6) ist dabei der Isolierkörper (13) bzw. der Grundkörper (5) der Hauptklemme angedeutet, wobei der Isolierkörper (13) bis zur Mitte der Hauptklemme sich kontinuierlich bis um 6 mm erhöht. Im äußeren rechten Randbereich erkennt man dabei, daß unter Aufnahme der äußeren Wölbung des Isolierkörpers (13) der Formkörper (6) eine angepaßte abgerundete Formgebung aufweist. Dagegen sind auf der linken Seite der Formkörper (6) und die in dem Isolierkörper (13) angelegten Hinterschneidungen (27, 28, siehe Figur 3) in einer rechtwinkligen Passung angelegt, wobei insbesondere die innen zu liegen kommende Eckkante der über die Breite des Formkörpers (6) verlaufenden Ansätze (29, 30) nicht abgerundet ist. Diese Ansätze (29, 30) sind dabei in Figur 8 in Schraffierung dargestellt, wie auch die Anlage der Ausnehmung (32) zur Aufnahme der Kerbplatte (33, siehe Figur 12).The structure of the molded body (6) which laterally and downwardly delimits the receiving channel (4) for the main conductor below the main body (5) of the main clamp and results from FIGS. 8, 9 and 10. In the side view of the bow-shaped molded body (6) 8, the continuous curvature of the outside of this U-shaped part can be clearly seen. The insulating body (13) or the base body (5) of the main terminal is indicated above the molded body (6), the insulating body (13) increasing continuously by 6 mm up to the center of the main terminal. In the outer right edge area it can be seen that when the outer curvature of the insulating body (13) is accommodated, the shaped body (6) has an adapted rounded shape. In contrast, on the left side of the molded body (6) and the undercuts (27, 28, see FIG. 3) created in the insulating body (13) are fitted in a right-angled fit, in particular the corner edge to be located on the inside of the over the width of the molded body (6) trending approaches (29, 30) is not rounded off. These approaches (29, 30) are shown in hatching in FIG. 8, as is the installation of the recess (32) for receiving the notching plate (33, see FIG. 12).

In der Querschnittsansicht durch den Formkörper (6) gemäß der Schnittlinie AB der Figur 8 erkennt man deutlich den U-förmigen Aufbau des Formkörpers (6), wobei dessen rechte und linke Bügelhälften spiegelsymmetrisch zur Winkelhalbierenden des Schenkelwinkels (31) verlaufen. Gemäß Figur 11 sind dabei die Ansätze (29, 30) an den oberen Enden der Bügelseiten derart abgewinkelt, daß in den unterhalb dieser Ansätze gebildeten Ausnehmungen sich jeweils ein Winkel von 45° zu den dort senkrecht verlaufenden Innenseiten des Formkörpers (6) einstellt. Die Halterippen (20, 21), welche seitlich außerhalb der Ausnehmungen (18, 19) des Grundkörpers (5) der Hauptklemme gebildet werden, weisen dabei ebenfalls einen entsprechenden Neigungswinkel von 45° auf. Da die Halterippen (20, 21) gemäß Figur 3 vollkommen symmetrisch zueinander rechts bzw. links der oberen Außenseite des Grundkörpers (5) angelegt sind, ergibt sich dabei eine gleichmäßige Kraftverteilung der bei und nach Montage des Abzweiges zur Wirkung kommenden äußeren Kräfte.In the cross-sectional view through the shaped body (6) according to the section line AB of Figure 8, you can clearly see the U-shaped structure of the shaped body (6), whereby right and left bracket halves are mirror-symmetrical to the bisector of the leg angle (31). According to Figure 11, the lugs (29, 30) at the upper ends of the bracket sides are angled such that in the recesses formed below these lugs an angle of 45 ° to the inner sides of the molded body (6) running perpendicular there. The holding ribs (20, 21), which are formed laterally outside the recesses (18, 19) of the base body (5) of the main clamp, also have a corresponding inclination angle of 45 °. Since the holding ribs (20, 21) according to FIG. 3 are completely symmetrical to one another on the right or left of the upper outside of the base body (5), this results in a uniform force distribution of the external forces that come into effect during and after assembly of the branch.

In Figur 13 ist im einzelnen die Klemmvorrichtung mit kontaktiertem Hauptleiter und Abzweigleiter dargestellt, wobei gemäß dem in der Patentanmeldung P 37 10 546.8 vorbeschriebenen Verfahren die äußere Abdichtung der Klemmvorrichtung und der dort angeschlossenen Kabel dargestellt ist. Zur Abdichtung der Hauptklemme (2) wird dabei eine Schrumpfmanschette (37) verwendet, welche im Bereich der Abzweigung des Verbindungssteges (16) eine Ausnehmung aufweist. Zur Montage der Schrumpfmanschette muß dabei diese Ausnehmung zunächst über die Abzweigklemme (7) gestülpt werden, wobei dann anschließend die Schrumpfmanschette (37) um die Hauptklemme und den dort ein- und auslaufenden Hauptleiter bzw. dessen Kabel wickelbar und durch Hitzeeinwirkung dichtend aufschrumpfbar ist. Zur Abdichtung des Abzweigleiters und der Abzweigklemme (7) wird dagegen ein Schrumpfschlauchstück (36) verwendet, welches insofern im Gegensatz zu einer "Schrumpfmanschette" in Umfangsrichtung als Schlauch zusammenhängend ist. Auf der Innenseite der Schrumpfmanschette und des Schrumpfschlauchstückes befindet sich dabei ein Schmelzkleber, der durch die Anformung beim Schrumpfvorgang die Abdichtung der Leiter bewirkt.FIG. 13 shows the clamping device with contacted main conductor and branch conductor, the outer seal of the clamping device and the cables connected there being shown in accordance with the method described in patent application P 37 10 546.8. A shrink sleeve (37) is used to seal the main clamp (2), which has a recess in the region of the branching off of the connecting web (16). To assemble the shrink sleeve, this recess must first be put over the branch clamp (7), and then the shrink sleeve (37) can then be wound around the main clamp and the main conductor and its cable coming in and out there and shrink-fit by heat. To seal the branch conductor and the branch clamp (7), on the other hand, a piece of shrink tubing (36) is used which, in contrast to a "shrink sleeve", is connected in the circumferential direction as a tube. On the inside of the shrink sleeve and the piece of shrink tubing there is a hot melt adhesive which, through the molding during the shrinking process, seals the conductors.

Durch eine zusätzliche äußere Schrumpfmanschette (38) erfolgt dabei die gemeinsame Abdichtung mehrerer einphasiger Klemmvorrichtungen.An additional outer shrink sleeve (38) is used to jointly seal several single-phase clamping devices.

In der Draufsicht auf den Kabelabzweig nach Figur 13 sind dabei die Hauptklemme (2) und die Abzweigklemme, sowie die angedeuteten Abschnitte des Hauptleiters und des Abzweigleiters entsprechend Figur 1 in Draufsicht wiedergegeben, wobei die durch den Verbindungssteg (16) verlaufenden elektrischen Kontaktteile in Strichelung angedeutet sind. Dagegen sind die innere Schrumpfmanschette (37) und die äußere Schrumpfmanschette (38) sowie das die Abzweigklemme (7) abdichtende Schrumpfschlauchstück (36) zur Unterscheidung nur im Querschnitt angedeutet.In the plan view of the cable branch according to FIG. 13, the main terminal (2) and the branch terminal, as well as the indicated sections of the main conductor and the branch conductor corresponding to FIG. 1, are shown in a top view, the electrical contact parts running through the connecting web (16) being indicated by dashed lines are. In contrast, the inner shrink sleeve (37) and the outer shrink sleeve (38) as well as the shrink tube piece (36) sealing the branch clamp (7) are only indicated in cross section for differentiation.

Aufgrund der besonderen Formgebung der Klemmvorrichtung und des im Endbereich seitlich oberhalb der Hauptklemme angelegten Verbindungssteges (16) für das Ende der Abzweigklemme, ist es dabei im Prinzip möglich, die Schrumpfmanschette (37) ohne Anlage einer Aussparung zur. Durchführung des von der Hauptklemme seitlich abzweigenden Verbindungssteges (16) lediglich bis zu diesen Abzweig zu führen. Die Schrumpfmanschette (37) liegt dabei teilweise auf dem Kabelmantel des Hauptleiters bzw. den dort seitlich teilweise um den Kabelmantel geführten Wandungsfortsatz (25) der Hauptklemme sowie dem übrigen Teil des Isolierkörpers (13) der Hauptklemme auf und wird dort mittels eines eingebrachten plastischen oder elastischen Formkörpers nach außen abgedichtet. Die Schrumpfmanschette (37) weist dabei ebenfalls einen Schmelzkleber auf, mit welchem das eingebrachte Formelement während der Anformung beim Schrumpfvorgang die Abdichtung des Hauptleiters bewirkt.Due to the special shape of the clamping device and the connecting web (16) for the end of the branch terminal in the end area laterally above the main terminal, it is in principle possible to use the shrink sleeve (37) without creating a recess. Execution of the connecting web (16) branching off laterally from the main terminal only to lead to this branch. The shrink sleeve (37) lies partly on the cable sheath of the main conductor or the wall extension (25) of the main terminal, which is partially guided laterally around the cable sheath, as well as the remaining part of the insulating body (13) of the main terminal, and is inserted there by means of an inserted plastic or elastic Shaped body sealed to the outside. The shrink sleeve (37) also has a hot-melt adhesive with which the molded element introduced seals the main conductor during the molding process during the shrinking process.

In Figur 14 ist ein derartiges einklebbares plastisches Formelement (39) dargestellt, wobei dieses Teil während des Schrumpfvorganges durch die Schrumpfmanschette (37) gequetscht wird und damit dicht am Leiter und dem Isolierkörper (13) der Hauptklemme anliegt.Such a glue-in plastic molding element (39) is shown in FIG. 14, this part being squeezed by the shrink sleeve (37) during the shrinking process and thus lying tightly against the conductor and the insulating body (13) of the main terminal.

Um eine ausreichende Dichtungslänge der Schrumpfmanschette (37) auf dem Isolierkörper (13) der Hauptklemme zu gewährleisten, muß der Abschnitt des Isolierkörpers zwischen dem Ende des bügelförmigen Formkörpers (6) und der Stelle des Abzweiges des Verbindungssteges (16) eine Länge entsprechend den Erfordernissen für Dichtungen, z. B. eine Länge von mindestens 2 cm aufweisen. Die Schrumpfmanschette (37) wird dabei im Bereich vor dem Abzweig des Verbindungssteges (16) um den unterhalb des Grundkörpers der Hauptklemme geführten Hauptleiter bzw. das diesen von unten umgebende Formelement (39) sowie den oberen Isolierkörper (13) des Grundkörpers der Hauptklemme gewickelt. Zur Abdichtung der äußeren Schrumpfmanschette (38), welche die gesamte Abzweigstelle mit allen dort vorhandenen Klemmvorrichtungen abdeckt, wird dabei im Zwickelbereich zwischen Hauptkabel und Abzweigkabel ein plastischer Dichtungskleber, wie eine Silikon-Dichtungsmasse, verwendet.In order to ensure a sufficient sealing length of the shrink sleeve (37) on the insulating body (13) of the main clamp, the section of the insulating body between the end of the bow-shaped molded body (6) and the location of the branch of the connecting web (16) must have a length corresponding to the requirements for Seals, e.g. B. have a length of at least 2 cm. The shrink sleeve (37) is wound in the area in front of the branch of the connecting web (16) around the main conductor guided below the main body of the main terminal or the shaped element (39) surrounding it from below and the upper insulating body (13) of the main body of the main terminal. To seal the outer shrink sleeve (38), which covers the entire branch point with all the clamping devices there, a plastic sealing adhesive, such as a silicone sealing compound, is used in the gusset area between the main cable and the branch cable.

Claims (15)

  1. Terminal device for producing a branch on the main conductor of a live voltage cable, having a main terminal which can be placed on the uncut main conductor and furthermore having a branch terminal, at a distance, for holding the end of a branch conductor in a terminal duct which contains a compression screw for making contact, which main terminal has a cutting screw for penetrating the insulation of the main conductor with which contact is to be made in each case, and has a moulding, which can be pushed onto a base body, in order to close, on the longitudinal side, its retaining duct which guides the section of the main conductor with which contact is to be made, the individual electrical contact parts in each case being held in an insulating body composed of pressure-resistant and dimensionally-stable electrically insulating plastic and, via a connecting web, connecting the base body of the main terminal to the base body of the branch terminal, there being guided in the connecting web a connecting rail which connects the contact parts of the main terminal and of the branch terminal to one another and makes contact between them, and the base body of the main terminal having undercuts and projections over which, forming an insertion opening which is open at the bottom and/or at the side, the moulding can be pushed on, which moulding is matched to the projections and undercuts and is chamfered there externally, the electrical contact parts (10, 11), which are guided in the base body (5) of the main terminal (2) and the base body (17) of the branch terminal (7), as well as the connecting rail (12), which is guided in the connecting web (16), being permanently extrusion-coated externally by means of the pressure-resistant and dimensionally-stable plastic of the insulating body, except for the region of the holes (23, 24) for the cutting screw (3) and the compression screw (9) and the terminal duct (8) of the branch conductor, and the base body (5) of the main terminal (2) and the base body (17) of the branch terminal (7) being constructed externally as elongated insulating housings (13, 14) which are aligned spaced apart parallel to one another and are connected to one another in the upper end region (15) by means of a connecting web (16) which is laterally bent or angled and runs in a U-arc shape radially downwards at the level of the retaining duct (4), the connecting rail (12) and the contact parts (10, 11) forming a cohesive component which is angled or bent in a U-shape and is likewise bent radially downwards through an angle (α), essentially on an outer radial surface, as a result of the arc-shaped guidance of the connecting web with respect to the outside.
  2. Terminal device for producing a branch in accordance with Claim 1, characterized in that the terminal duct (8) is constructed within the metallic contact part (11) of the branch conductor as a blind hole.
  3. Terminal device for producing a branch according to Claim 1 or 2, characterized in that the top of the base body (5) of the main terminal is curved essentially corresponding to the curved guidance of the connecting web (16).
  4. Terminal device for producing a branch according to one or more of the preceding Claims 1 - 3, characterized in that the base body (5) of the main terminal forms an external elongated insulating housing, which bulges in the form of a shell and covers the outside of the bulging main conductor from one side, retaining ribs (20, 21), which are guided on the sides of the cutting screw on the right-hand and left-hand outside in the longitudinal direction of the base body (5), being constructed in the front section of said insulating housing, which retaining ribs have the undercuts (18, 19) and projections (20, 21) which are provided for locking and guidance of the moulding (6) of the main terminal.
  5. Terminal device for producing a branch according to Claim 4, characterized in that the moulding (6) can be pushed onto the retaining ribs (20, 21) with a push fit or press fit and forms a U-shaped or V-shaped bracket which engages laterally in the top of the base body, the upper ends of the bracket sides, which are constructed in mirror-image symmetry, ending in bends, which are constructed in mirror-image symmetry with respect to one another, and have undercuts (27, 28) and projections (29, 30).
  6. Terminal device for producing a branch according to one or more of the preceding Claims 1 - 5, characterized in that the moulding (6) has a recess (32) in the wall material there in the region of its limb angle (31), which recess (32) opens inwards towards the centre of the moulding and in which a metallic notch plate (33) is constructed which has notched teeth or lateral ribs (34) which press into the electrical insulation of the main conductor when the cutting screw (3) is tightened.
  7. Terminal device for producing a branch according to Claim 6, characterized in that the free web-height of the notched teeth and of the lateral ribs (34) is greater than the insulation thickness of the main conductor with which contact is to be made by the cutting screw.
  8. Terminal device for producing a branch in accordance with one or more of the preceding Claims 1 - 7, characterized in that the notched plate (33) has a bulge like a cylindrical-wall section in the direction of the bend of the V-shaped or U-shaped moulding, a leaf spring (35) being supported in the recess (32) under this notch plate (33) against its convex bulge.
  9. Terminal device for producing a branch according to one or more of the preceding Claims 1 - 8, characterized in that a wall extension (25), which extends downwards to below the main conductor, is constructed at least on the inside, facing the adjacent branch terminal, of the insulating housing (13), which bulges in the form of a shell, behind the lateral retaining rib (21) there.
  10. Terminal device for producing a branch according to one or more of the preceding claims, having a protection device which seals the entire branch and/or the terminal device as well as the main conductor and the branch conductor against environmental influences and has a piece of shrink sleeving which is shrunk onto the input region of the branch terminal (7) as a protection device, as well as a shrink collar which is shrunk onto the main terminal (2) and onto the insulation of the main conductor with the required sealing length, characterized in that the shrink collar (37) is shrunk on, without provision of a cut-out for the insulated connecting web (16), only up to its branch on the cable sheath of the main conductor or the wall extension which projects laterally there and the insulating body (13) of the main terminal, the section of the insulating body between the end of the bracket-shaped moulding (6) of the main terminal and the point of the branch of the connecting web (16) having a length corresponding to the requirements for seals, for example of at least 2 cm.
  11. Terminal device for producing a branch according to Claim 10, characterized in that a shrink collar (38) which covers the entire branch point is arranged as an external protection device, a branching embodiment for guiding the main cable and the branch cable out being created at one end, in the gap region of which, between the main cable and the branch cable, a sealing insert is constructed, preferably from a plastic which can be deformed.
  12. Terminal device for producing a branch according to Claim 10 or 11, characterized in that the protection devices (36, 37, 38) which are composed of a plastic which can be shrunk (for example of a material on a polyethylene base) have an inner coating composed of an adhesive material, which preferably fuses when heat is applied.
  13. Terminal device for producing a branch according to Claims 10, 11 and 12, characterized in that the insulating body of the main conductor is constructed in the region between the end of the bracket-shaped moulding of the main terminal and the point of the branch of the connecting web in the direction of the outside of the main conductor and the outside of the bracket-shaped moulding as a supporting body, which ends level with its bulge for the shrink collar which is to be shrunk on.
  14. Terminal device for producing a branch according to one or more of Claims 1 - 13, characterized in that the U-shaped component of the contact parts (10, 11) of the main terminal and branch terminal as well as the connecting rail (12) are constructed integrally or are constructed in a plurality of pieces which can be connected to form a cohesive component by means of solder, screw or plug connection.
  15. Terminal device for producing a branch according to one or more of Claims 1 - 14, characterized in that an elastic sealing moulded element (39) is pressed or bonded in at the level of the branching connecting web (16) over a region in the extension of the retaining duct (4) of the main terminal (2), the main terminal (2) being sealed there to the section of the main conductor ending there by means of a shrunk-on shrink collar (37) with fusion adhesive (for example silicon).
EP88119596A 1987-11-27 1988-11-24 Device for clamped connections for the establishing of a branch to the conductor of an active cable Expired - Lifetime EP0318007B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88119596T ATE100634T1 (en) 1987-11-27 1988-11-24 CLAMPING DEVICE FOR CREATING A BRANCH ON THE MAIN CONDUCTOR OF A LIVE VOLTAGE CABLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3740266 1987-11-27
DE19873740266 DE3740266A1 (en) 1987-11-27 1987-11-27 CLAMPING DEVICE FOR PRODUCING A BRANCH ON THE MAIN LADDER OF A LIVE VOLTAGE CABLE

Publications (3)

Publication Number Publication Date
EP0318007A2 EP0318007A2 (en) 1989-05-31
EP0318007A3 EP0318007A3 (en) 1990-12-19
EP0318007B1 true EP0318007B1 (en) 1994-01-19

Family

ID=6341419

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88119596A Expired - Lifetime EP0318007B1 (en) 1987-11-27 1988-11-24 Device for clamped connections for the establishing of a branch to the conductor of an active cable

Country Status (3)

Country Link
EP (1) EP0318007B1 (en)
AT (1) ATE100634T1 (en)
DE (2) DE3740266A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4220745A1 (en) * 1992-06-26 1994-01-05 Cellpack Ag Wohlen Branch or connection sleeve for electrical cable - has two-part housing enclosing screw clamping terminal block accepting number of cables and with sealing
DE4309843A1 (en) * 1993-03-26 1994-09-29 S L G Kunststoff Fabrik Und Fo Cable junction terminal
FI97833C (en) * 1995-09-11 1997-02-25 Sekko Ab Oy Branching coupling for suspension coil lines
FR2780556B1 (en) * 1998-06-24 2000-09-15 App Mat Elect Const CONNECTION ACCESSORY FOR DERIVATIVE CABLE TO BE CONNECTED TO A MAIN CABLE, AND BYPASS CONNECTOR PROVIDED WITH SUCH A CONNECTION ACCESSORY
PE20130052A1 (en) 2009-11-03 2013-02-04 Orica Explosives Tech Pty Ltd CONNECTOR
CN112510391B (en) * 2020-11-25 2022-05-06 贵州电网有限责任公司 Wire harness connector applied to modular FTU

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1168518B (en) * 1961-04-17 1964-04-23 Alois Schiffmann Dipl Kfm Pressure screw of a screw terminal

Also Published As

Publication number Publication date
EP0318007A2 (en) 1989-05-31
DE3740266A1 (en) 1989-06-01
ATE100634T1 (en) 1994-02-15
DE3887288D1 (en) 1994-03-03
EP0318007A3 (en) 1990-12-19

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