EP3477778B1 - Connection and sealing element for an insulated electrical conduit and method of preparing same - Google Patents

Connection and sealing element for an insulated electrical conduit and method of preparing same Download PDF

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Publication number
EP3477778B1
EP3477778B1 EP17306460.1A EP17306460A EP3477778B1 EP 3477778 B1 EP3477778 B1 EP 3477778B1 EP 17306460 A EP17306460 A EP 17306460A EP 3477778 B1 EP3477778 B1 EP 3477778B1
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EP
European Patent Office
Prior art keywords
sleeve
sealing part
sealing
insulation
plastically deformable
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.)
Active
Application number
EP17306460.1A
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German (de)
French (fr)
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EP3477778A1 (en
Inventor
Gerhard Lindner
Christian Wittmann
Herrmann TEICHER
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Nexans SA
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Nexans SA
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Priority to EP17306460.1A priority Critical patent/EP3477778B1/en
Publication of EP3477778A1 publication Critical patent/EP3477778A1/en
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Publication of EP3477778B1 publication Critical patent/EP3477778B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/005—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion

Definitions

  • the invention relates to a connection and sealing unit for an insulated electrical line and to a method for producing a fluid-tight electrical connection using the connection and sealing unit.
  • stop parts which are permanently connected to the electrical line, e.g. by means of a clamp or crimp connection.
  • the stop part is then connected in an electrically conductive manner to a corresponding receptacle of the electrical unit, for example by means of a self-locking plug connection or a screw connection.
  • the electrical cables and units can be exposed to harsh operating and environmental conditions, including mechanical vibrations, dirt and moisture. If moisture penetrates between a conductor and an insulation of an electrical line, corrosion or failure of the insulation can occur, so that the electrical connection no longer functions reliably. In order to reliably ensure a long service life of the electrical connection, it is necessary to prevent dirt or moisture from penetrating between the conductor and the insulation of an electrical line. In particular, the sealing of insulated lines with stranded conductors, i.e. a bundle of individual wires, is complex and requires a large number of manual work steps.
  • a conductive, plastically deformable sleeve is currently crimped over the stripped strands, so that a fluid-tight connection is created between the sleeve and the strands, and the transition area between the The sleeve and the insulation are sealed against external environmental influences by means of a shrink tube that extends over the transition area.
  • a sealing compound for example an adhesive, can additionally be provided on the inside of the shrink tube in order to increase the sealing effect.
  • fluid-tight is used for tightness against the ingress of liquids and / or gases.
  • Crimping is a joining process in which two components are connected to one another by plastic deformation, for example by flanging, squeezing, crimping or folding.
  • a crimp connection can only be released to a limited extent and can only be replaced with a suitable tool in the event of repairs.
  • the wires of a cable are connected to a connecting element, e.g. a plug or a wire end sleeve, non-positively and / or positively connected.
  • a connecting element e.g. a plug or a wire end sleeve
  • the force for the plastic deformation of the conductor or connecting element usually acts via a toggle lever, because the hand force is too weak for a permanent deformation process.
  • a non-positive connection is created when two parts are connected by means of a normal force that acts essentially perpendicularly on the surfaces connected to one another.
  • a normal force that acts essentially perpendicularly on the surfaces connected to one another.
  • an essentially radial force acts between the connecting element and the wire bundle.
  • a form-fitting connection is created when two connected parts interlock in such a way that their position relative to one another cannot be changed at least in one direction.
  • Known form-fitting connections are, for example, the so-called dovetail connection, in which a connecting part which widens towards one end in at least one dimension engages in a correspondingly shaped receptacle.
  • the connection element and the wire bundle can be deformed during crimping come, for example through partial displacement of material to the sides of a crimped ring, so that at least in one direction a movement of the connected parts to one another is impossible.
  • strain relief comes to rest on the insulation of the cable and is not squeezed to the same extent as the wire crimping of the wire bundle.
  • the strain relief must be firm enough that the insulation does not slip out from under the insulation crimp by bending it several times by 45 °. However, it must not be so strong that it breaks the insulation or even injures individual strands.
  • the present invention has the object of creating an improved connection and sealing unit which enables a fluid-tight electrical connection to be established between a stop part and an insulated electrical line with a few manual work steps or in a completely automated manner.
  • the invention proposes, according to a first aspect, an electrical line with a connection and sealing unit in the assembled state according to claim 1, and according to a second aspect, a method according to claim 10.
  • the connection and sealing unit comprises a plastically deformable, electrically conductive sleeve, a stop part and a radially elastically deformable sealing part.
  • the sealing part rests against the sleeve under mechanical tension in a first area and completely surrounds the sleeve coaxially.
  • the mechanical stress acts on the sleeve in the radial direction due to the elastic deformability of the sealing part.
  • the diameter of an opening in the sealing part into which the sleeve is pushed in the assembled state can be smaller than the diameter of the sleeve.
  • the sealing part is connected in a second area over the circumference of an insulation of the electrical line to the insulation in a non-positive, material and / or form-fitting and fluid-tight manner.
  • the sleeve is connected to the conductor of the electrical line in an electrically conductive, non-positive and / or positive and fluid-tight manner over the circumference of a conductor of the electrical line.
  • a radially deformable sealing part also comprises sealing parts which are stiffer in the axial direction than in the radial direction, which can be achieved, for example, by means of corresponding inserted structures.
  • the fluid-tight connections between conductor and sleeve, sleeve and sealing part and between sealing part and insulation prevent fluids from penetrating between the conductor and insulation.
  • the fluid-tight connections can result from plastic deformation of the sleeve and / or conductors or sealing element and / or insulation. Plastic deformation involves a flow of material during deformation. When installed correctly, the sleeve or the sealing element rests against the conductor or the insulation over the entire circumference.
  • the sealing part is a rotationally symmetrical hollow body with two open ends, for example a hollow cylinder.
  • the openings of the hollow cylinder can have different diameters in order to compensate for differences between the outer diameters of the sleeve and the insulation of the electrical line and still ensure easy assembly.
  • the transition between the open ends can be stepped at least within the sealing part.
  • the rotationally symmetrical hollow body retains a cylindrical shape on the outside, while the inside has a stepped profile of the diameter.
  • the step-shaped course of the inside diameter can form a stop for insulating the electrical line, which enables the connection and sealing unit to be positioned easily during assembly.
  • a cavity can also remain between the step and the insulation, for example in order to allow the electrical line to flex.
  • the cavity can also be reduced in size or eliminated by an additional crimp connection.
  • an inner surface of the sealing unit resting on the sleeve and / or the insulation is provided with circumferential grooves or elevations so that a plurality of partial surfaces successive in the axial direction lie circumferentially on the sleeve and / or the insulation.
  • the sealing part can be connected in a non-positive and / or positive and fluid-tight manner to the sleeve in a circumferential manner between the second and the third area.
  • the non-positive and / or positive connection of the sealing part with the sleeve of the electrical line can be made, for example, by crimping.
  • the end of the sealing part lying above the insulation has an outwardly raised edge. This During assembly, for example, the edge can serve as a defined stop for a stop part pushed onto the connection and sealing unit and thus facilitate processing.
  • connection and sealing unit When assembling the stop part, the connection and sealing unit is first pushed over a stripped end of the insulated line so that the sleeve lies over the conductor and part of the sealing part over the insulation.
  • the sleeve can be closed at the end facing away from the sealing part. If the connection and sealing unit is in two parts, the sleeve is first pushed over the stripped conductor, and then the sealing part is pushed over the sleeve and the insulation. In the next step, the stop part is pushed over the connection and sealing unit.
  • the stop part has a first electrical contact surface and a first and a second plastically deformable structure.
  • At least the first plastically deformable structure is electrically conductive and encloses the connection and sealing unit in the assembled state in the third area in which the sleeve is not enclosed by the sealing part.
  • the second plastically deformable structure encloses the connection and sealing unit in the assembled state in the second area in which the sealing part lies above the insulation.
  • the stop part has a third plastically deformable structure lying between the first and the second plastically deformable structure.
  • the third plastically deformable structure encloses the sealing part of the connection and sealing unit in the area above the sleeve.
  • the stop part with the sleeve and the sealing part of the connection and sealing unit After the pre-assembly, the stop part with the sleeve and the sealing part of the connection and sealing unit, the sleeve with the electrical conductor and the sealing part with the insulation are non-positively and / or positively connected.
  • the non-positive and / or positive connection takes place by means of deformation of the plastically deformable structures of the stop part around a respective one Connection area, for example by crimping. In these areas, the plastically deformed areas of the stop part exert a force acting radially on the sleeve or the sealing unit.
  • the plastically deformable structures are designed in such a way that they retain their shape after deformation.
  • the plastically deformable structures are slotted longitudinally or obliquely to an axial direction, the slit being eliminated after the deformation by overlapping the parts of the plastically deformable structure which are opposite in the undeformed state.
  • the ends of the parts of the plastically deformable structure that are opposite one another in the undeformed state can, however, also touch during the deformation and be bent inward in the radial direction.
  • the optional cohesive connection of the sealing part with the insulation of the electrical line can take place, for example, by gluing or vulcanization.
  • Figure 1 shows a schematic exploded view of an exemplary connection and sealing unit with electrical line 1 and stop part 20. From left to right in the figure, the stop part 20 is shown with a first electrical contact surface 22, a first deformable structure 12, a third deformable structure 16 and a second deformable structure 14.
  • the deformable structures can be an integral component of a stop part 20 produced in one piece or, in the case of a stop part 20 produced from several parts, be permanently connected to the other parts of the stop part 20.
  • the deformable structures 12, 14, 16 of the exemplary connection and sealing unit are ring-shaped so that they enclose an electrical conductor 8 or an insulation 6 of the electrical line 1 and / or a sleeve 2 of the connection and sealing unit over the entire circumference .
  • the annular deformable structures 12, 14, 16 are slotted at an angle to a coaxial direction, the edges of the slots being able to slide over one another in the deformed state or being able to be bent in the radial direction.
  • the slits can also run parallel to a coaxial direction (not shown in the figure).
  • a sleeve 2 and a sealing part 3 of the connection and sealing unit are shown.
  • part of the sleeve 2 is pushed into the sealing unit 3.
  • connection and sealing unit To the right of the components of the connection and sealing unit, an electrical line 1 with a stripped area 26 and insulation 6 is shown.
  • Figure 2 shows an exemplary side and top view of a cable assembled with the connection and sealing unit and a stop part.
  • the figure clearly shows how the deformable structures 12, 14, 16, the sleeve and the sealing part of the connection and sealing unit at different points Enclose places and connect to the electrical conductor or the insulation of electrical line 1.
  • the edge 10 of the sealing unit during assembly serves as a stop for the second deformable structure 14 when the stop part 20 is pushed on, thereby making it easier to assemble electrical lines in a consistently high quality.
  • coordinated combinations of stop part and connection and sealing unit can be kept ready, whereby it can be ensured that the deformable structures are always in the correct areas of the electrical line before deformation.
  • Figure 3 shows an exemplary sectional view of a cable 1 assembled with the connection and sealing unit and a stop part 20 Connection and sealing unit is facilitated after it has been pushed onto the electrical line 1.
  • first deformable structure 12 of the stop part 20 encloses the sleeve 2 of the connection and sealing unit and connects it to the electrical conductor 8 of the electrical line 1.
  • the first plastically deformable structure 12 encloses the connection and sealing unit in the assembled state in a third area 7 in which the sleeve 2 is not enclosed by the sealing part 3.
  • the second deformable structure 14 encloses the sealing part 3 of the connection and sealing unit and presses it onto the insulation 6 of the electrical line 1.
  • the third deformable structure 16 of the stop part 20 encloses the sealing part 3 of the connection and sealing unit in an area in which it encompasses the sleeve 2 and presses it onto the sleeve 2. This additional pressing force can reinforce the sealing effect between the sealing part 3 and the sleeve 2 in addition to a mechanical preload that the sealing part 3 exerts on the sleeve 2.
  • Figure 4 shows a detail of the sectional view from Figure 3 .
  • surfaces 9 with grooves are shown in the first region 4, in which the sealing part 3 rests against the sleeve 2.
  • the webs adjoining the grooves can be pressed firmly against the surface of the sleeve 2 by the mechanical stress generated by the sealing part 3 or even be deformed by the mechanical stress.
  • a mechanical stress generated by the deformation of the plastically deformable structure 16 of the stop part 20 can act in the radial direction on the sealing part 3 and the grooves.
  • the grooves can serve as an escape space for material displaced by the deformation and thus bring about a pressure force and tightness that is uniform over the entire circumference of the sleeve 2.
  • Figure 5 shows the same detail of the sectional view as Figure 4 , however, in Figure 5 Areas 9 with grooves in a second area 5 are shown.
  • the function and effect corresponds to that with reference to Figure 4 described function and effect of the surfaces with grooves.
  • the areas with grooves in the second area 5, however, also have a compensating function for any unclean edge or deformation in the cut area of the insulation 6 that may have occurred during stripping 6 and is little or not at all deformed in this area with correct assembly.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

Gebietarea

Die Erfindung betrifft eine Anschluss- und Dichteinheit für eine isolierte elektrische Leitung sowie ein Verfahren zur Herstellung eines fluiddichten elektrischen Anschlusses unter Verwendung der Anschluss- und Dichteinheit.The invention relates to a connection and sealing unit for an insulated electrical line and to a method for producing a fluid-tight electrical connection using the connection and sealing unit.

Hintergrundbackground

Elektrische Verbindungen zwischen elektrischen Leitungen und elektrischen Aggregaten werden häufig unter Verwendung von Anschlagteilen hergestellt, welche mit der elektrischen Leitung unlösbar verbunden werden, z.B. mittels einer Klemm- oder Crimpverbindung. Das Anschlagteil wird dann mit einer entsprechenden Aufnahme des elektrischen Aggregats elektrisch leitend verbunden, beispielsweise durch eine selbstklemmende Steckverbindung oder eine Schraubverbindung.Electrical connections between electrical lines and electrical units are often made using stop parts which are permanently connected to the electrical line, e.g. by means of a clamp or crimp connection. The stop part is then connected in an electrically conductive manner to a corresponding receptacle of the electrical unit, for example by means of a self-locking plug connection or a screw connection.

Die elektrischen Leitungen und Aggregate können rauen Einsatz- und Umweltbedingungen ausgesetzt sein, unter anderem mechanischen Erschütterungen, Schmutz, und Feuchtigkeit. Beim Eindringen von Feuchtigkeit zwischen einem Leiter und einer Isolierung einer elektrischen Leitung kann es zu Korrosion oder Ausfall der Isolierung kommen, so dass die elektrische Verbindung nicht mehr sicher funktioniert. Um eine lange Einsatzdauer der elektrischen Verbindung zuverlässig zu gewährleisten, ist es erforderlich, das Eindringen von Schmutz oder Feuchtigkeit zwischen Leiter und Isolierung einer elektrischen Leitung zu verhindern. Insbesondere die Abdichtung von isolierten Leitungen mit Litzenleitern, also einem Bündel einzelner Adern, ist aufwändig und erfordert eine Vielzahl manueller Arbeitsschritte.The electrical cables and units can be exposed to harsh operating and environmental conditions, including mechanical vibrations, dirt and moisture. If moisture penetrates between a conductor and an insulation of an electrical line, corrosion or failure of the insulation can occur, so that the electrical connection no longer functions reliably. In order to reliably ensure a long service life of the electrical connection, it is necessary to prevent dirt or moisture from penetrating between the conductor and the insulation of an electrical line. In particular, the sealing of insulated lines with stranded conductors, i.e. a bundle of individual wires, is complex and requires a large number of manual work steps.

Gegenwärtig wird zu diesem Zweck eine leitfähige, plastisch verformbare Hülse über die abisolierten Litzen gecrimpt, so dass eine fluiddichte Verbindung zwischen Hülse und Litzen entsteht, und der Übergangsbereich zwischen der Hülse und der Isolierung wird mittels eines den Übergangsbereich übergreifenden Schrumpfschlauchs gegen äußere Umwelteinflüsse abgedichtet. Auf der Innenseite des Schrumpfschlauchs kann dabei zusätzlich eine Dichtmasse, bspw. ein Kleber, vorgesehen sein, um die Dichtwirkung zu erhöhen.For this purpose, a conductive, plastically deformable sleeve is currently crimped over the stripped strands, so that a fluid-tight connection is created between the sleeve and the strands, and the transition area between the The sleeve and the insulation are sealed against external environmental influences by means of a shrink tube that extends over the transition area. A sealing compound, for example an adhesive, can additionally be provided on the inside of the shrink tube in order to increase the sealing effect.

In der vorliegenden Beschreibung wird der Begriff fluiddicht für Dichtheit gegenüber dem Eindringen von Flüssigkeiten und/oder Gasen verwendet.In the present description, the term fluid-tight is used for tightness against the ingress of liquids and / or gases.

Unter Crimpen versteht man ein Fügeverfahren, bei dem zwei Komponenten durch plastische Verformung miteinander verbunden werden, beispielsweise durch Bördeln, Quetschen, Kräuseln oder Falten. Eine Crimpverbindung ist nur bedingt lösbar und kann bei Reparaturen nur mit geeignetem Werkzeug erneuert werden.Crimping is a joining process in which two components are connected to one another by plastic deformation, for example by flanging, squeezing, crimping or folding. A crimp connection can only be released to a limited extent and can only be replaced with a suitable tool in the event of repairs.

Mit Hilfe einer Crimpzange werden die Adern eines Kabels mit einem Verbindungselement, z.B. einem Stecker oder einer Aderendhülse, kraft- und/oder formschlüssig verbunden. Beim Verbinden oder Verpressen wirkt die Kraft zur plastischen Verformung des Leiters, bzw. Verbindungselementes meist über einen Kniehebel, weil die Handkraft zu schwach für einen dauerhaften Verformungsvorgang ist.With the aid of crimping pliers, the wires of a cable are connected to a connecting element, e.g. a plug or a wire end sleeve, non-positively and / or positively connected. When connecting or pressing, the force for the plastic deformation of the conductor or connecting element usually acts via a toggle lever, because the hand force is too weak for a permanent deformation process.

Eine kraftschlüssige Verbindung entsteht, wenn zwei Teile mittels einer Normalkraft verbunden werden, die im Wesentlichen senkrecht auf die miteinander verbundenen Flächen wirkt. Im vorliegenden Fall wirkt eine im Wesentlichen radiale Kraft zwischen Verbindungselement und Aderbündel.A non-positive connection is created when two parts are connected by means of a normal force that acts essentially perpendicularly on the surfaces connected to one another. In the present case, an essentially radial force acts between the connecting element and the wire bundle.

Beim Crimpen entsteht in der Regel auch eine formschlüssige Verbindung. Eine formschlüssige Verbindung entsteht, wenn zwei verbundene Teile so ineinandergreifen, dass ihre Lage zueinander zumindest in einer Richtung unveränderbar ist. Bekannte formschlüssige Verbindungen sind z.B. die sogenannte Schwalbenschwanzverbindung, bei der ein zu einem Ende hin in zumindest einer Dimension breiter werdendes Verbindungsteil in eine entsprechend geformte Aufnahme eingreift. Im vorliegenden Fall kann es beim Crimpen zu einer Verformung des Verbindungselements und des Aderbündels kommen, z.B. durch teilweise Verdrängung von Material zu den Seiten eines aufgecrimpten Rings, so dass zumindest in einer Richtung eine Bewegung der verbundenen Teile zueinander unmöglich ist.When crimping, a form-fit connection is usually created. A form-fitting connection is created when two connected parts interlock in such a way that their position relative to one another cannot be changed at least in one direction. Known form-fitting connections are, for example, the so-called dovetail connection, in which a connecting part which widens towards one end in at least one dimension engages in a correspondingly shaped receptacle. In the present case, the connection element and the wire bundle can be deformed during crimping come, for example through partial displacement of material to the sides of a crimped ring, so that at least in one direction a movement of the connected parts to one another is impossible.

Es gibt Crimpverbindungen mit und ohne Zugentlastung, wobei bei den Verbindungen mit Zugentlastung diese auch gecrimpt werden. Die Zugentlastung kommt auf der Isolation des Kabels zu liegen, und wird nicht im selben Maße gequetscht wie die Drahtcrimpung des Aderbündels. Die Zugentlastung muss fest genug sein, dass die Isolation nicht durch mehrmaliges Biegen um 45° unter der Isolationscrimpung hervorrutscht. Sie darf jedoch nicht so fest sein, dass sie die Isolation durchbricht, oder gar einzelne Litzen verletzt.There are crimp connections with and without strain relief, whereby the connections with strain relief are also crimped. The strain relief comes to rest on the insulation of the cable and is not squeezed to the same extent as the wire crimping of the wire bundle. The strain relief must be firm enough that the insulation does not slip out from under the insulation crimp by bending it several times by 45 °. However, it must not be so strong that it breaks the insulation or even injures individual strands.

Beim Crimpen entsteht bei korrekter Ausführung eine gas- oder fluiddichte Verbindung. Durch Verformung der Crimphülse und der feindrähtigen Leitung entsteht eine Struktur, die weitgehend von Sauerstoff abgeschottet und somit im Inneren weitgehend vor Korrosion geschützt ist.When crimping is performed correctly, a gas- or fluid-tight connection is created. The deformation of the crimp sleeve and the finely stranded cable creates a structure that is largely sealed off from oxygen and thus largely protected from corrosion on the inside.

Hiervon ausgehend hat die vorliegende Erfindung die Aufgabe, eine verbesserte Anschluss- und Dichteinheit zu schaffen, die es ermöglicht, eine fluiddichte elektrische Verbindung zwischen einem Anschlagteil und einer isolierten elektrischen Leitung mit wenigen manuellen Arbeitsschritten bzw. vollständig automatisiert herzustellen.Proceeding from this, the present invention has the object of creating an improved connection and sealing unit which enables a fluid-tight electrical connection to be established between a stop part and an insulated electrical line with a few manual work steps or in a completely automated manner.

DE 10 2010 009284 A1 offenbart eine elektrische Leitung gemäß dem Oberbegriff von Anspruch 1. DE 10 2010 009284 A1 discloses an electrical line according to the preamble of claim 1.

Zusammenfassung der ErfindungSummary of the invention

Zur Lösung dieser Aufgabe schlägt die Erfindung nach einem ersten Aspekt eine elektrische Leitung mit einer Anschluss- und Dichteinheit im montierten Zustand gemäß Anspruch 1 vor, sowie nach einem zweiten Aspekt ein Verfahren gemäß Anspruch 10.To solve this problem, the invention proposes, according to a first aspect, an electrical line with a connection and sealing unit in the assembled state according to claim 1, and according to a second aspect, a method according to claim 10.

Die Anschluss- und Dichteinheit umfasst eine plastisch verformbare, elektrisch leitfähige Hülse, ein Anschlagteil und ein radial elastisch verformbares Dichtungsteil. Das Dichtungsteil liegt in einem ersten Bereich an der Hülse unter mechanischer Spannung an und umschließt die Hülse koaxial vollständig. Die mechanische Spannung wirkt aufgrund der elastischen Verformbarkeit des Dichtungsteils in radialer Richtung auf die Hülse ein. Zu diesem Zweck kann der Durchmesser einer Öffnung in dem Dichtungsteil, in die die Hülse im montierten Zustand eingeschoben ist, kleiner sein als der Durchmesser der Hülse. Das Dichtungsteil ist in einem zweiten Bereich über den Umfang einer Isolierung der elektrischen Leitung mit der Isolierung umlaufend anliegend kraft-, stoff- und/oder formschlüssig sowie fluiddicht verbunden. Die Hülse ist in einem dritten Bereich, der nicht von dem Dichtungsteil umschlossen ist, über den Umfang eines Leiters der elektrischen Leitung mit diesem elektrisch leitend, kraft- und/oder formschlüssig sowie fluiddicht verbunden.The connection and sealing unit comprises a plastically deformable, electrically conductive sleeve, a stop part and a radially elastically deformable sealing part. The sealing part rests against the sleeve under mechanical tension in a first area and completely surrounds the sleeve coaxially. The mechanical stress acts on the sleeve in the radial direction due to the elastic deformability of the sealing part. For this purpose, the diameter of an opening in the sealing part into which the sleeve is pushed in the assembled state can be smaller than the diameter of the sleeve. The sealing part is connected in a second area over the circumference of an insulation of the electrical line to the insulation in a non-positive, material and / or form-fitting and fluid-tight manner. In a third area, which is not enclosed by the sealing part, the sleeve is connected to the conductor of the electrical line in an electrically conductive, non-positive and / or positive and fluid-tight manner over the circumference of a conductor of the electrical line.

Ein radial verformbares Dichtungsteil umfasst auch Dichtungsteile, die in axialer Richtung steifer sind als in radialer Richtung, was beispielsweise durch entsprechende eingelegte Strukturen erreichbar ist.A radially deformable sealing part also comprises sealing parts which are stiffer in the axial direction than in the radial direction, which can be achieved, for example, by means of corresponding inserted structures.

Die fluiddichten Verbindungen von Leiter und Hülse, Hülse und Dichtungsteil sowie von Dichtungsteil und Isolierung verhindern das Eindringen von Fluiden zwischen Leiter und Isolierung. Die fluiddichten Verbindungen können durch plastische Verformung von Hülse und/oder Leitern bzw. Dichtelement und/oder Isolierung entstehen. Die plastische Verformung schließt ein Fließen von Material während der Verformung ein. Bei korrekter Montage liegt die Hülse bzw. das Dichtelement über den gesamten Umfang an dem Leiter bzw. der Isolierung an.The fluid-tight connections between conductor and sleeve, sleeve and sealing part and between sealing part and insulation prevent fluids from penetrating between the conductor and insulation. The fluid-tight connections can result from plastic deformation of the sleeve and / or conductors or sealing element and / or insulation. Plastic deformation involves a flow of material during deformation. When installed correctly, the sleeve or the sealing element rests against the conductor or the insulation over the entire circumference.

Bei einem Ausführungsbeispiel ist das Dichtungsteil ein rotationssymmetrischer Hohlkörper mit zwei offenen Enden, bspw. ein Hohlzylinder. Die Öffnungen des Hohlzylinders können unterschiedliche Durchmesser aufweisen, um Unterschiede zwischen den äußeren Durchmessern der Hülse und der Isolierung der elektrischen Leitung auszugleichen und dennoch eine leichte Montierbarkeit zu gewährleisten. Der Übergang zwischen den offenen Enden kann zumindest innerhalb des Dichtungsteils stufenförmig verlaufen. Dabei behält der rotationssymmetrische Hohlkörper äußerlich eine Zylinderform, während der im Innern einen gestuften Verlauf des Durchmessers aufweist. Der stufenförmige Verlauf des Innendurchmessers kann einen Anschlag zur Isolierung der elektrischen Leitung bilden, wodurch eine einfache Positionierung der Anschluss- und Dichteinheit bei der Montage ermöglicht wird. Es kann aber auch ein Hohlraum zwischen der Stufe und der Isolierung verbleiben, bspw. um eine Biegebewegung der elektrischen Leitung zuzulassen. Der Hohlraum kann jedoch auch durch eine zusätzliche Crimpverbindung verkleinert oder eliminiert werden.In one embodiment, the sealing part is a rotationally symmetrical hollow body with two open ends, for example a hollow cylinder. The openings of the hollow cylinder can have different diameters in order to compensate for differences between the outer diameters of the sleeve and the insulation of the electrical line and still ensure easy assembly. The transition between the open ends can be stepped at least within the sealing part. The rotationally symmetrical hollow body retains a cylindrical shape on the outside, while the inside has a stepped profile of the diameter. The step-shaped course of the inside diameter can form a stop for insulating the electrical line, which enables the connection and sealing unit to be positioned easily during assembly. However, a cavity can also remain between the step and the insulation, for example in order to allow the electrical line to flex. However, the cavity can also be reduced in size or eliminated by an additional crimp connection.

Bei einem Ausführungsbeispiel ist eine an der Hülse und/oder an der Isolierung anliegende innere Fläche der Dichteinheit mit entlang des Umfangs umlaufenden Rillen oder Erhebungen versehen, so dass jeweils mehrere in axialer Richtung aufeinanderfolgende Teilflächen umlaufend an der Hülse und/oder der Isolierung anliegen. Die so entstandene Struktur ermöglicht eine Verpressung der Dichteinheit in radialer Richtung mit reduzierter seitlicher Materialverdrängung und kann im verpressten Zustand die Dichtigkeit verbessern. Außerdem ergibt sich dadurch eine optisch ansprechendere Verarbeitung.In one embodiment, an inner surface of the sealing unit resting on the sleeve and / or the insulation is provided with circumferential grooves or elevations so that a plurality of partial surfaces successive in the axial direction lie circumferentially on the sleeve and / or the insulation. The structure created in this way enables the sealing unit to be pressed in the radial direction with reduced lateral material displacement and can improve the tightness in the pressed state. This also results in a more visually appealing processing.

Bei einem Ausführungsbeispiel ist das Dichtungsteil zwischen dem zweiten und dem dritten Bereich mit der Hülse umlaufend anliegend kraft- und/oder formschlüssig und sowie fluiddicht verbindbar. Die kraft- und/oder formschlüssige Verbindung des Dichtungsteils mit der Hülse der elektrischen Leitung kann bspw. durch Crimpen erfolgen.In one embodiment, the sealing part can be connected in a non-positive and / or positive and fluid-tight manner to the sleeve in a circumferential manner between the second and the third area. The non-positive and / or positive connection of the sealing part with the sleeve of the electrical line can be made, for example, by crimping.

Bei einem Ausführungsbeispiel weist das an dem über der Isolierung liegende Ende des Dichtungsteils einen nach außen erhöhten Rand auf. Dieser Rand kann bspw. bei der Montage als definierter Anschlag für ein auf die Anschluss- und Dichteinheit aufgeschobenes Anschlagteil dienen und damit die Verarbeitung erleichtern.In one embodiment, the end of the sealing part lying above the insulation has an outwardly raised edge. This During assembly, for example, the edge can serve as a defined stop for a stop part pushed onto the connection and sealing unit and thus facilitate processing.

Bei der Montage des Anschlagteils wird zunächst die Anschluss- und Dichteinheit über ein abisoliertes Ende der isolierten Leitung geschoben, so dass die Hülse über dem Leiter liegt, und ein Teil des Dichtungsteils über der Isolierung. Die Hülse kann an dem von dem Dichtungsteil abgewandten Ende geschlossen sein. Wenn die Anschluss- und Dichteinheit zweiteilig vorliegt wird zunächst die Hülse über den abisolierten Leiter geschoben, und dann der Dichtungsteil über die Hülse und die Isolierung. In einem nächsten Schritt wird das Anschlagteil über die Anschluss- und Dichteinheit geschoben. Das Anschlagteil weist eine erste elektrische Kontaktfläche auf sowie eine erste und eine zweite plastisch verformbare Struktur. Zumindest die erste plastisch verformbare Struktur ist elektrisch leitend und umschließt die Anschluss- und Dichteinheit im montierten Zustand in dem dritten Bereich, in dem die Hülse nicht von dem Dichtungsteil umschlossen ist. Die zweite plastisch verformbare Struktur umschließt die Anschluss- und Dichteinheit im montierten Zustand in dem zweiten Bereich, in dem der Dichtungsteil über der Isolierung liegt.When assembling the stop part, the connection and sealing unit is first pushed over a stripped end of the insulated line so that the sleeve lies over the conductor and part of the sealing part over the insulation. The sleeve can be closed at the end facing away from the sealing part. If the connection and sealing unit is in two parts, the sleeve is first pushed over the stripped conductor, and then the sealing part is pushed over the sleeve and the insulation. In the next step, the stop part is pushed over the connection and sealing unit. The stop part has a first electrical contact surface and a first and a second plastically deformable structure. At least the first plastically deformable structure is electrically conductive and encloses the connection and sealing unit in the assembled state in the third area in which the sleeve is not enclosed by the sealing part. The second plastically deformable structure encloses the connection and sealing unit in the assembled state in the second area in which the sealing part lies above the insulation.

Erfindungsgemäß weist das Anschlagteil eine dritte, zwischen der ersten und der zweiten plastisch verformbaren Struktur liegende plastisch verformbare Struktur auf. Die dritte plastisch verformbare Struktur umschließt das Dichtungsteil der Anschluss- und Dichteinheit in dem über der Hülse liegenden Bereich.According to the invention, the stop part has a third plastically deformable structure lying between the first and the second plastically deformable structure. The third plastically deformable structure encloses the sealing part of the connection and sealing unit in the area above the sleeve.

Nach der Vormontage werden das Anschlagteil mit der Hülse und dem Dichtungsteil der Anschluss- und Dichteinheit, die Hülse mit dem elektrischen Leiter und das Dichtungsteil mit der Isolierung kraft- und/oder formschlüssig verbunden.After the pre-assembly, the stop part with the sleeve and the sealing part of the connection and sealing unit, the sleeve with the electrical conductor and the sealing part with the insulation are non-positively and / or positively connected.

Die kraft- und/oder formschlüssige Verbindung erfolgt mittels Verformung der plastisch verformbaren Strukturen des Anschlagteils um einen jeweiligen Verbindungsbereich, bspw. durch Crimpen. In diesen Bereichen üben die plastisch verformten Bereiche des Anschlagteils eine radial auf die Hülse bzw. die Dichteinheit wirkende Kraft aus. Die plastisch verformbaren Strukturen sind dabei so beschaffen, dass sie ihre Form nach der Verformung beibehalten. Die plastisch verformbaren Strukturen sind dabei längs oder schräg zu einer axialen Richtung geschlitzt, wobei der Schlitz nach der Verformung durch Überlappung der sich im unverformten Zustand gegenüberliegenden Teile der plastisch verformbaren Struktur eliminiert ist. Die Enden der sich im unverformten Zustand gegenüberliegenden Teile der plastisch verformbaren Struktur können sich bei der Verformung aber auch berühren und in radialer Richtung nach innen gebogen werden. Die optionale stoffschlüssige Verbindung des Dichtungsteils mit der Isolierung der elektrischen Leitung kann bspw. durch Kleben oder Vulkanisation erfolgen.The non-positive and / or positive connection takes place by means of deformation of the plastically deformable structures of the stop part around a respective one Connection area, for example by crimping. In these areas, the plastically deformed areas of the stop part exert a force acting radially on the sleeve or the sealing unit. The plastically deformable structures are designed in such a way that they retain their shape after deformation. The plastically deformable structures are slotted longitudinally or obliquely to an axial direction, the slit being eliminated after the deformation by overlapping the parts of the plastically deformable structure which are opposite in the undeformed state. The ends of the parts of the plastically deformable structure that are opposite one another in the undeformed state can, however, also touch during the deformation and be bent inward in the radial direction. The optional cohesive connection of the sealing part with the insulation of the electrical line can take place, for example, by gluing or vulcanization.

Kurze Beschreibung der ZeichnungBrief description of the drawing

Nachfolgend wird die Erfindung anhand einer Ausführungsform unter Bezugnahme auf die begleitenden Figuren exemplarisch näher erläutert. Alle Figuren sind rein schematisch und nicht maßstäblich. Es zeigen:

Fig. 1
eine schematische Explosionsdarstellung einer Anschlussund Dichteinheit mit elektrischer Leitung und Anschlagteil,
Fig. 2
eine exemplarische Seiten- und Draufsicht auf eine mit der Anschluss- und Dichteinheit sowie einem Anschlagteil konfektionierte Leitung,
Fig. 3
eine exemplarische Schnittdarstellung einer mit der Anschluss- und Dichteinheit sowie einem Anschlagteil konfektionierten Leitung,
Fig. 4-5
Details der Schnittdarstellung aus Figur 3.
In the following, the invention is explained in more detail using an embodiment with reference to the accompanying figures. All figures are purely schematic and not to scale. Show it:
Fig. 1
a schematic exploded view of a connection and sealing unit with electrical cable and stop part,
Fig. 2
an exemplary side and top view of a cable assembled with the connection and sealing unit and a stop part,
Fig. 3
an exemplary sectional view of a cable assembled with the connection and sealing unit and a stop part,
Fig. 4-5
Details of the sectional view Figure 3 .

Gleiche oder ähnliche Elemente sind in den Figuren mit gleichen oder ähnlichen Bezugszeichen versehen.The same or similar elements are provided with the same or similar reference symbols in the figures.

AusführungsbeispielEmbodiment

Figur 1 zeigt eine schematische Explosionsdarstellung einer exemplarischen Anschluss- und Dichteinheit mit elektrischer Leitung 1 und Anschlagteil 20. Von links nach rechts sind in der Figur dargestellt das Anschlagteil 20 mit einer ersten elektrischen Kontaktfläche 22, einer ersten verformbaren Struktur 12, einer dritten verformbaren Struktur 16 und einer zweiten verformbaren Struktur 14. Die verformbaren Strukturen können integraler Bestandteil eines einstückig hergestellten Anschlagteils 20 sein oder, im Falle eines aus mehreren Teilen hergestellten Anschlagteils 20, mit den anderen Teilen des Anschlagteils 20 unlösbar verbunden sein. Die verformbaren Strukturen 12, 14, 16 der exemplarischen Anschluss- und Dichteinheit sind ringförmig ausgebildet, so dass sie einen elektrischen Leiter 8 bzw. eine Isolierung 6 der elektrischen Leitung 1 und/oder eine Hülse 2 der Anschluss- und Dichteinheit über den gesamten Umfang umschließen. Die ringförmigen verformbaren Strukturen 12, 14, 16 sind dabei schräg zu einer koaxialen Richtung geschlitzt, wobei die Kanten der Schlitze sich im verformten Zustand übereinander schieben können oder in radialer Richtung gebogen sein können. Alternativ zu der dargestellten schrägen Schlitzung können die Schlitze auch parallel zu einer koaxialen Richtung verlaufen (nicht in der Figur dargestellt). Figure 1 shows a schematic exploded view of an exemplary connection and sealing unit with electrical line 1 and stop part 20. From left to right in the figure, the stop part 20 is shown with a first electrical contact surface 22, a first deformable structure 12, a third deformable structure 16 and a second deformable structure 14. The deformable structures can be an integral component of a stop part 20 produced in one piece or, in the case of a stop part 20 produced from several parts, be permanently connected to the other parts of the stop part 20. The deformable structures 12, 14, 16 of the exemplary connection and sealing unit are ring-shaped so that they enclose an electrical conductor 8 or an insulation 6 of the electrical line 1 and / or a sleeve 2 of the connection and sealing unit over the entire circumference . The annular deformable structures 12, 14, 16 are slotted at an angle to a coaxial direction, the edges of the slots being able to slide over one another in the deformed state or being able to be bent in the radial direction. As an alternative to the oblique slotting shown, the slits can also run parallel to a coaxial direction (not shown in the figure).

Rechts neben dem Anschlagteil 20 sind eine Hülse 2 und ein Dichtungsteil 3 der Anschluss- und Dichteinheit dargestellt. Im montierten Zustand ist ein Teil der Hülse 2 in die Dichteinheit 3 eingeschoben.To the right of the stop part 20, a sleeve 2 and a sealing part 3 of the connection and sealing unit are shown. In the assembled state, part of the sleeve 2 is pushed into the sealing unit 3.

Rechts neben den Komponenten der Anschluss- und Dichteinheit ist eine elektrische Leitung 1 mit einem abisolierten Bereich 26 und einer Isolierung 6 dargestellt.To the right of the components of the connection and sealing unit, an electrical line 1 with a stripped area 26 and insulation 6 is shown.

Figur 2 zeigt eine exemplarische Seiten- und Draufsicht auf eine mit der Anschluss- und Dichteinheit sowie einem Anschlagteil konfektionierte Leitung. In der Figur ist deutlich zu erkennen, wie die verformbaren Strukturen 12, 14, 16 die Hülse und das Dichtungsteil der Anschluss- und Dichteinheit an unterschiedlichen Stellen umschließen und mit dem elektrischen Leiter bzw. der Isolierung der elektrischen Leitung 1 verbinden. Ebenfalls wird deutlich, wie der Rand 10 der Dichteinheit bei der Montage als Anschlag für die zweite verformbare Struktur 14 beim Aufschieben des Anschlagteils 20 dient, wodurch die Konfektionierung elektrischer Leitungen in stets gleichbleibender Ausführungsqualität erleichtert wird. Für unterschiedliche elektrische Leitungen können aufeinander abgestimmte Kombinationen aus Anschlagteil und Anschluss- und Dichteinheit bereitgehalten werden, wodurch sichergestellt werden kann, dass die verformbaren Strukturen vor der Verformung stets in den richtigen Bereichen der elektrischen Leitung liegen. Figure 2 shows an exemplary side and top view of a cable assembled with the connection and sealing unit and a stop part. The figure clearly shows how the deformable structures 12, 14, 16, the sleeve and the sealing part of the connection and sealing unit at different points Enclose places and connect to the electrical conductor or the insulation of electrical line 1. It is also clear how the edge 10 of the sealing unit during assembly serves as a stop for the second deformable structure 14 when the stop part 20 is pushed on, thereby making it easier to assemble electrical lines in a consistently high quality. For different electrical lines, coordinated combinations of stop part and connection and sealing unit can be kept ready, whereby it can be ensured that the deformable structures are always in the correct areas of the electrical line before deformation.

Figur 3 zeigt eine exemplarische Schnittdarstellung einer mit der Anschluss- und Dichteinheit sowie einem Anschlagteil 20 konfektionierten Leitung 1. Im rechten Teil der Figur ist die konzentrische Anordnung der ringförmigen verformbaren Strukturen 12, 14, 16 des Anschlagteils 20 erkennbar, wodurch das Aufschieben des Anschlagteils 20 auf die Anschluss- und Dichteinheit erleichtert wird, nachdem diese auf die elektrische Leitung 1 aufgeschoben wurde. Figure 3 shows an exemplary sectional view of a cable 1 assembled with the connection and sealing unit and a stop part 20 Connection and sealing unit is facilitated after it has been pushed onto the electrical line 1.

In Figur 3 ist deutlich erkennbar, wie die erste verformbare Struktur 12 des Anschlagteils 20 die Hülse 2 der Anschluss- und Dichteinheit umschließt und mit dem elektrischen Leiter 8 der elektrischen Leitung 1 verbindet. Die erste plastisch verformbare Struktur 12 umschließt die Anschluss- und Dichteinheit im montierten Zustand in einem dritten Bereich 7, in dem die Hülse 2 nicht von dem Dichtungsteil 3 umschlossen ist. Die zweite verformbare Struktur 14 umschließt das Dichtungsteil 3 der Anschluss- und Dichteinheit und presst dieses auf die Isolierung 6 der elektrischen Leitung 1. Die dritte verformbare Struktur 16 des Anschlagteils 20 umschließt das Dichtungsteil 3 der Anschluss- und Dichteinheit in einem Bereich, in dem es die Hülse 2 umgreift, und presst dieses auf die Hülse 2. Diese zusätzliche Anpresskraft kann die Dichtwirkung zwischen Dichtungsteil 3 und Hülse 2 zusätzlich zu einer mechanischen Vorspannung, die das Dichtungsteil 3 auf die Hülse 2 ausübt, verstärken.In Figure 3 it can be clearly seen how the first deformable structure 12 of the stop part 20 encloses the sleeve 2 of the connection and sealing unit and connects it to the electrical conductor 8 of the electrical line 1. The first plastically deformable structure 12 encloses the connection and sealing unit in the assembled state in a third area 7 in which the sleeve 2 is not enclosed by the sealing part 3. The second deformable structure 14 encloses the sealing part 3 of the connection and sealing unit and presses it onto the insulation 6 of the electrical line 1. The third deformable structure 16 of the stop part 20 encloses the sealing part 3 of the connection and sealing unit in an area in which it encompasses the sleeve 2 and presses it onto the sleeve 2. This additional pressing force can reinforce the sealing effect between the sealing part 3 and the sleeve 2 in addition to a mechanical preload that the sealing part 3 exerts on the sleeve 2.

Figur 4 zeigt ein Detail der Schnittdarstellung aus Figur 3. In Figur 4 sind Flächen 9 mit Rillen in dem ersten Bereich 4 dargestellt, in dem das Dichtungsteil 3 an der Hülse 2 anliegt. Die an die Rillen angrenzenden Stege können durch die durch das Dichtungsteil 3 erzeugte mechanische Spannung fest an die Oberfläche der Hülse 2 angedrückt werden oder sogar durch die mechanische Spannung verformt sein. Zusätzlich zu der durch das Dichtungsteil 3 erzeugten mechanischen Spannung kann eine durch die Verformung der plastisch verformbaren Struktur 16 des Anschlagteils 20 erzeugte mechanische Spannung in radialer Richtung auf das Dichtungsteil 3 und die Rillen wirken. Dabei können die Rillen als Ausweichraum für durch die Verformung verdrängtes Material dienen und so eine über den gesamten Umfang der Hülse 2 vergleichmäßigte Andruckkraft und Dichtigkeit bewirken. Figure 4 shows a detail of the sectional view from Figure 3 . In Figure 4 surfaces 9 with grooves are shown in the first region 4, in which the sealing part 3 rests against the sleeve 2. The webs adjoining the grooves can be pressed firmly against the surface of the sleeve 2 by the mechanical stress generated by the sealing part 3 or even be deformed by the mechanical stress. In addition to the mechanical stress generated by the sealing part 3, a mechanical stress generated by the deformation of the plastically deformable structure 16 of the stop part 20 can act in the radial direction on the sealing part 3 and the grooves. The grooves can serve as an escape space for material displaced by the deformation and thus bring about a pressure force and tightness that is uniform over the entire circumference of the sleeve 2.

Figur 5 zeigt dasselbe Detail der Schnittdarstellung wie Figur 4, jedoch sind in Figur 5 Flächen 9 mit Rillen in einem zweiten Bereich 5 dargestellt. Die Funktion und Wirkung entspricht der mit Bezug auf Figur 4 beschriebenen Funktion und Wirkung der Flächen mit Rillen. Die Flächen mit Rillen im zweiten Bereich 5 erfüllen jedoch zusätzlich eine Ausgleichsfunktion für eine beim Abisolieren möglicherweise entstandene unsaubere Kante oder Verformung im Schnittbereich der Isolierung 6. Im ersten Bereich 4 ist eine derartige Ausgleichsfunktion weniger wichtig, weil die Hülse 2 insgesamt formstabiler ist als die Isolierung 6 und in diesem Bereich bei korrekter Montage wenig oder gar nicht verformt ist. Figure 5 shows the same detail of the sectional view as Figure 4 , however, in Figure 5 Areas 9 with grooves in a second area 5 are shown. The function and effect corresponds to that with reference to Figure 4 described function and effect of the surfaces with grooves. The areas with grooves in the second area 5, however, also have a compensating function for any unclean edge or deformation in the cut area of the insulation 6 that may have occurred during stripping 6 and is little or not at all deformed in this area with correct assembly.

BezugszeichenlisteList of reference symbols

11
elektrische Leitungelectrical line
22
HülseSleeve
33
DichtungsteilSealing part
44th
erster Bereichfirst area
55
zweiter Bereichsecond area
66th
Isolierunginsulation
77th
dritter Bereichthird area
88th
elektrischer Leiterelectrical conductor
99
Fläche mit Rillen oder ErhebungenArea with grooves or elevations
1010
Randedge
1212
erste verformbare Strukturfirst deformable structure
1414th
zweite verformbare Struktursecond deformable structure
1616
dritte verformbare Strukturthird deformable structure
2020th
AnschlagteilStop part
2222nd
erste elektrische Kontaktflächefirst electrical contact surface
2626th
abisoliertes Endestripped end

Claims (10)

  1. An electric line having a connecting and sealing unit in the mounted state, the connecting and sealing unit comprising a plastically deformable, electrically conductive sleeve (2), a stop part (20) and a radially elastically deformable sealing part (3), wherein the sealing part (3) in the mounted state abuts against the sleeve (2) under mechanical stress in a first region (4) and coaxially completely surrounds the sleeve (2), wherein the sealing part (3) is connected in a circumferentially abutting manner in a second region (5) over the circumference of an insulation (6) of the electric line (1) to the insulation (6) in a non-positive, material and/or positive as well as fluid-tight manner, and wherein the sleeve (2) in the third region (7), which is surrounded by the sealing part (3), is connected over the circumference of a conductor (8) of the electric line (1) to said conductor in an electrically conductive non-positive and/or positive and fluid-tight manner, the stop part (20) comprising a first electrical contact surface (22), a first electrically conductive, plastically deformable structure (12), which surrounds the sleeve (2) in the third region (7), which is not surrounded by the sealing part (3), and a second plastically deformable structure (14), which surrounds an insulation (6) of the electrical line (1) in the second region (5), in which the sealing part (3) lies over the insulation (6), characterized in that
    the stop part (20) also comprises a third plastically deformable structure (16), which is arranged between the first and the second plastically deformable structure (12, 14) and surrounds the sealing part (3) of the connecting and sealing unit between the second and the third region (5, 7), wherein the plastically deformable structures (12, 14, 16) annularly surround the sleeve (2), the sealing part (3) and the electrical line (1), and are slit longitudinally or obliquely to an axial direction, and wherein the plastically deformable structures (12, 14, 16) of the stop part are deformed in such a manner, that a non-positive and/or positive connection is established at least between the sleeve (2) and the electric conductor (8) as well as the sealing part (3) and the insulation (6) and the edges of the slits are pushed over one another or are bent inwards in the radial direction.
  2. The electric line having a connecting and sealing unit according to claim 1, wherein the sealing part (3) is a rotationally symmetrical hollow body with two open ends.
  3. The electric line (1) having a connecting and sealing unit according to claim 2, wherein the open ends of the sealing part (3) have different opening diameters.
  4. The electric line (1) having a connecting and sealing unit according to claim 3, wherein the transition between the open ends extends in a stepped-manner at least within the sealing part (3).
  5. The electric line (1) having a connecting and sealing unit according to claim 4, wherein the stepped inner course of the sealing part (3) forms an axial stop on the insulation (6) of the electric line (1).
  6. The electric line (1) having a connecting and sealing unit according to claim 1, wherein an inner surface (9) of the sealing unit (3), which abut against the sleeve (2) and/or against the insulation (6), is provided with circumferential grooves or elevations along the circumference, so that in each case several successive partial surfaces in the axial direction abut circumferentially against the sleeve (2) and/or the insulation (6).
  7. The electric line (1) having a connecting and sealing unit according to claim 1, wherein the second and/or third plastically deformable structure (14, 16) connect the sealing part (3) in a circumferentially abutting manner to the insulation or to the sleeve (2) in a non-positive and/or positive and fluid-tight manner.
  8. The electric line (1) having a connecting and sealing unit according to claim 1, wherein the end of the sealing part (3), that is located over the insulation (6), has an edge (10), which is raised outwards in the radial direction.
  9. A connecting and sealing unit according to claim 8, wherein the edge (10) raised outwards forms an axial stop for the second plastically deformable structure (14).
  10. A method for establishing a fluid-tight electrical connection of an insulated electrical line (1) by means of a connecting and sealing unit according to any one of claims 1-9, comprising:
    - Providing the connecting and sealing unit comprising a plastically deformable electrically conductive sleeve (2), a stop part (20) and a radially elastically deformable sealing part (3), wherein the sealing part (3) is designed such that in the mounted state it abuts against the sleeve (2) in a first region (4) under mechanical stress and coaxially completely surrounds the sleeve (2), wherein the sealing part (3) can be connected in a circumferentially abutting manner in a second region (5) over the circumference of an insulation (6) of the electric line (1) to the insulation (6) in a non-positive, material and/or positive as well as fluid-tight manner, and wherein the sleeve (2) in a third region (7), which is not surrounded by the sealing part (3), can be connected over the circumference of a conductor (8) of the electric line (1) to said conductor electrically conductively in a non-positive and/or positive as well as fluid-tight manner, the stop part (20) comprising a first electrical contact surface (22), a first electrically conductive plastically deformable structure (12), which is designed such that in the mounted state it surrounds the sleeve (2) in the third region (7), which is not surrounded by the sealing part (3), a second plastically deformable structure (14), which is designed such that in the mounted state it surrounds an insulation (6) of the electric line (1) in the second region (5), in which the sealing part (3) lies over the insulation (6), and a third plastically deformable structure (16), which is arranged between the first and the second plastically deformable structure (12, 14) and is designed such that in the mounted state it surrounds the sealing part (3) of the connecting and sealing unit between the second and the third region (5, 7), wherein the plastically deformable structures (12, 14, 16) are designed such that in the mounted state they annularly surround the sleeve (2), the sealing part (3) and the electric line (1), and are slit longitudinally or obliquely to an axial direction,
    - sliding the sleeve (2) and the sealing part (3) of the connecting and sealing unit over a stripped end (26) of the insulated electric line (1), so that the sleeve (2) lies over the electric conductor (8), the first region (4) of the sealing part (3) lies over the sleeve (2) and the second region of the sealing part (3) lies over the insulation (6),
    - sliding the stop part (20) of the connecting and sealing unit over the sleeve (2) and the sealing part (3), so that the first plastically deformable structure (12) surrounds the sleeve (2) in the third region (7), the second plastically deformable structure (14) surrounds the sealing part (3) in the second region (5), and the third plastically deformable structure (16) surrounds the sealing part (3) in the first region (4), and
    - deforming the plastically deformable structures (12, 14, 16) of the stop part (20), so that a non-positive and/or positive connection is established at least between the sleeve (2) and the electric conductor (8) as well as the sealing part (3) and the insulation (6), wherein the edges of the slits of the plastically deformable structures are pushed over one another and are bent inwards in the radial direction.
EP17306460.1A 2017-10-24 2017-10-24 Connection and sealing element for an insulated electrical conduit and method of preparing same Active EP3477778B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17306460.1A EP3477778B1 (en) 2017-10-24 2017-10-24 Connection and sealing element for an insulated electrical conduit and method of preparing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17306460.1A EP3477778B1 (en) 2017-10-24 2017-10-24 Connection and sealing element for an insulated electrical conduit and method of preparing same

Publications (2)

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EP3477778A1 EP3477778A1 (en) 2019-05-01
EP3477778B1 true EP3477778B1 (en) 2020-12-09

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Application Number Title Priority Date Filing Date
EP17306460.1A Active EP3477778B1 (en) 2017-10-24 2017-10-24 Connection and sealing element for an insulated electrical conduit and method of preparing same

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543369B2 (en) * 1983-03-24 1986-01-17 Francelco Sa SEALING DEVICE FOR ELECTRICAL CONNECTOR
JPH0729577Y2 (en) * 1989-10-05 1995-07-05 旭電機株式会社 Adapter for connecting different wires
JP3259812B2 (en) * 1995-09-19 2002-02-25 矢崎総業株式会社 Terminal fittings for waterproof connectors
JP4941067B2 (en) * 2007-04-13 2012-05-30 住友電装株式会社 Terminal fitting
DE102010009284B4 (en) * 2010-02-25 2018-11-29 Thomas Flottmann Conduction unit with sealing function
JP2011192586A (en) * 2010-03-16 2011-09-29 Autonetworks Technologies Ltd Cable having terminal fitting, and manufacturing method for same
JP5601259B2 (en) * 2011-03-24 2014-10-08 住友電装株式会社 Terminal fitting

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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