EP2706620B1 - Method for sealing an electrical coupling section and coupling section produced according to this method - Google Patents

Method for sealing an electrical coupling section and coupling section produced according to this method Download PDF

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Publication number
EP2706620B1
EP2706620B1 EP20120306084 EP12306084A EP2706620B1 EP 2706620 B1 EP2706620 B1 EP 2706620B1 EP 20120306084 EP20120306084 EP 20120306084 EP 12306084 A EP12306084 A EP 12306084A EP 2706620 B1 EP2706620 B1 EP 2706620B1
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EP
European Patent Office
Prior art keywords
line
protective body
ring
conductors
electrical
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Application number
EP20120306084
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German (de)
French (fr)
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EP2706620A1 (en
Inventor
Dr. Udo Mayer
Thomas Noetzel
Dr. Helmut Steinberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nexans SA
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Nexans SA
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Publication date
Application filed by Nexans SA filed Critical Nexans SA
Priority to EP20120306084 priority Critical patent/EP2706620B1/en
Priority to ES12306084.0T priority patent/ES2527996T3/en
Priority to CN201310403567.9A priority patent/CN103682793B/en
Priority to US14/021,072 priority patent/US9106002B2/en
Publication of EP2706620A1 publication Critical patent/EP2706620A1/en
Application granted granted Critical
Publication of EP2706620B1 publication Critical patent/EP2706620B1/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
    • 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
    • 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
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • 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
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members
    • 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
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/504—Bases; Cases composed of different pieces different pieces being moulded, cemented, welded, e.g. ultrasonic, or swaged together

Definitions

  • the invention relates to a method for sealing an electrical coupling part against moisture according to the preamble of patent claim 1 and to an arrangement with such coupling part.
  • Coupling part according to the invention may be a box or a plug, which are equipped with electrical socket contacts or with electrical connector pins.
  • Such a coupling part is mounted in a known technique for producing a so-called prefabricated line at the end of an electrical line having any number of existing of insulated electrical conductors cores, which are surrounded by a common sheath of insulating material.
  • the wires are freed from the jacket at the end of the line to a predetermined length.
  • the wires are then stripped at their free ends and the thus exposed conductors are electrically connected to the contact elements of the coupling part.
  • an existing of insulating material protective body is sprayed around the junction between conductors and contact elements and the line in an injection mold.
  • a moisture-proof cover of the connection point is only achieved if the protective body connects sufficiently firmly with the jacket of the line.
  • a suitable connection can be achieved for conventional lines by a suitable selection of the materials for the protective body and the jacket of the line.
  • lines which are to be used in areas with high temperatures and in which the material of the shell is crosslinked there are problems with respect to the sealing against moisture.
  • EP 2 485 336 A1 is applied prior to spraying the protective body surrounded by two parts of a capsule sealing ring on the jacket of the conduit, which rests as well as the parts of the capsule on the surface of the shell and is encapsulated with.
  • the parts of the capsule connect moisture-tight with the protective body.
  • the invention has for its object to make the initially described method so that in a simple design, a moisture-proof embodiment of the coupling part is ensured under all possible conditions.
  • Claim 3 refers to an arrangement with a correspondingly produced coupling part.
  • This method is particularly simple to carry out, because in addition to the steps required for the production of an electrically conductive connection between the conductors of the line and the contact elements of the coupling part only at least one peripheral circumferential groove in the circumferential direction of the conduit must be cut into the shell thereof, for example by means of a milling cutter , In the groove, a commercial O-ring is used before spraying the protective body, which in the expanded state the line is pushed and firmly applies with appropriate bias to the lateral boundaries of the groove.
  • the groove is thus hermetically sealed by the O-ring with the advantage that possible non-circular areas on the surface of the jacket of the conduit with respect to the seal to be achieved can not affect.
  • the material of the final sprayed protective body matched to the material of the O-ring, bonds firmly and moisture-tight to the O-ring.
  • the area between the protective body and the jacket of the pipe is hermetically sealed thereby circumferentially. Therefore, even under very harsh conditions, moisture can not propagate along the line to the junction between the conductors of the line and the contact elements of the coupling part.
  • FIG. 1 the end of an electrical line 1 is shown, which has two electrical wires 2 and 3, which from a common jacket 4 (FIG. Fig. 2 ) are surrounded by insulating material.
  • the wires 2 and 3 each have an electrical conductor 5 or 6 surrounded by an insulation. They are preferably stranded in the line 1 with each other.
  • the line 1 may also have more than two wires, which are surrounded by a common sheath of insulating material.
  • Fig. 1 are also two electrical contact elements 7 and 8 are shown, with which the conductors 5 and 6 of the line 1 are to be electrically connected.
  • the contact elements 7 and 8 can be socket contacts or plug pins. They consist for example of copper or a copper alloy.
  • Fig. 3 shows a section through a coupling part K, which is attached to the end of the line 1.
  • the conductors 5 and 6 of the wires 2 and 3 are electrically connected to the contact elements 7 and 8, for example by crimping.
  • the Junction between the conductors 5 and 6 and the contact elements 7 and 8 is surrounded by a manufactured by injection molding, consisting of insulating protective body 9, which extends over the line 1.
  • the protective body 9 also surrounds the contact elements 7 and 8 over their entire axial length, but with the release of their facing away from the line 1 end faces, which are thus available for plugging on mating contacts or for insertion of mating contacts available.
  • It is preferably made of polyamide or of a thermoplastic polyurethane (TPU) or polybutylene terephthalate (PBT).
  • the protective body 9 Surrounded by the protective body 9 is also designed as an O-ring 10 sealing element, which is mounted on the jacket 4 of the line 1, in one of Fig. 4 apparent, in the circumferential direction of the line 1 circumferential groove 11.
  • the O-ring 10 is preferably made of a polyurethane material, such as a thermoplastic polyurethane or polyurethane itself.
  • the groove 11 and the O-ring 10 are dimensioned so that the O-ring in the off Fig. 4 apparent mounting position tightly and firmly against the two lateral edges of the groove 11. It can also be two or more circumferential in the circumferential direction of the line 1 and parallel to each other positioned grooves in the jacket 4 of the line 1 are mounted, in which in each case an O-ring is arranged in the mounting position. All O-rings are possibly covered in the finished coupling part K by the protective body 9.
  • the groove 11 can also be cut into the jacket 4 before the removal of the jacket 4 to expose the wires 2 and 3 or before the stripping thereof. This also applies to the positioning of the O-ring 10. The operations of removing the jacket 4 and stripping the wires 2 and 3 are then carried out subsequently.
  • the contact elements 7 and 8 are electrically connected to the conductors 5 and 6, and indeed - as already mentioned - with advantage by crimping.
  • the thus prepared end of the line 1 is finally placed in an injection mold, in which the protective body 9 is injected. Its material connects tightly and firmly with the material of the O-ring 10, so that at the location of the O-ring a hermetically sealed barrier is provided for along the surface of the shell 4 of the line 1 spreading moisture.

Description

Die Erfindung bezieht sich auf ein Verfahren zum Abdichten eines elektrischen Kupplungsteils gegenüber Feuchtigkeit gemäß dem Oberbegriff des Patentanspruchs 1 und auf eine Anordnung mit solchen Kupplungsteil.The invention relates to a method for sealing an electrical coupling part against moisture according to the preamble of patent claim 1 and to an arrangement with such coupling part.

Ein solches Verfahren und eine solche Anordnung gehen aus der EP 2 485 336 A1 hervor.Such a method and such an arrangement are based on EP 2 485 336 A1 out.

Kupplungsteil im Sinne der Erfindung kann eine Dose oder ein Stecker sein, die mit elektrischen Buchsenkontakten oder mit elektrischen Steckerstiften ausgerüstet sind. Ein solches Kupplungsteil wird in bekannter Technik zur Herstellung einer sogenannten konfektionierten Leitung am Ende einer elektrischen Leitung angebracht, die eine beliebige Anzahl von aus isolierten elektrischen Leitern bestehenden Adern aufweist, welche von einem gemeinsamen Mantel aus Isoliermaterial umgeben sind. Zur Herstellung eines Kupplungsteils werden die Adern am Ende der Leitung auf einer vorgegebenen Länge vom Mantel befreit. Die Adern werden danach an ihren freien Enden abisoliert und die dadurch freigelegten Leiter werden mit den Kontaktelementen des Kupplungsteils elektrisch leitend verbunden. Abschließend wird in einem Spritzgießwerkzeug ein aus Isoliermaterial bestehender Schutzkörper um die Verbindungsstelle zwischen Leitern und Kontaktelementen sowie die Leitung herumgespritzt. Eine feuchtigkeitsdichte Abdeckung der Verbindungsstelle wird nur dann erreicht, wenn der Schutzkörper sich ausreichend fest mit dem Mantel der Leitung verbindet. Eine entsprechende Verbindung kann für übliche Leitungen durch eine geeignete Auswahl der Materialien für den Schutzkörper und den Mantel der Leitung erreicht werden. Bei Leitungen, die in Bereichen mit hohen Temperaturen eingesetzt werden sollen und bei denen das Material des Mantels vernetzt ist, ergeben sich bezüglich der Abdichtung gegen Feuchtigkeit hingegen Probleme.Coupling part according to the invention may be a box or a plug, which are equipped with electrical socket contacts or with electrical connector pins. Such a coupling part is mounted in a known technique for producing a so-called prefabricated line at the end of an electrical line having any number of existing of insulated electrical conductors cores, which are surrounded by a common sheath of insulating material. To produce a coupling part, the wires are freed from the jacket at the end of the line to a predetermined length. The wires are then stripped at their free ends and the thus exposed conductors are electrically connected to the contact elements of the coupling part. Finally, an existing of insulating material protective body is sprayed around the junction between conductors and contact elements and the line in an injection mold. A moisture-proof cover of the connection point is only achieved if the protective body connects sufficiently firmly with the jacket of the line. A suitable connection can be achieved for conventional lines by a suitable selection of the materials for the protective body and the jacket of the line. On the other hand, in the case of lines which are to be used in areas with high temperatures and in which the material of the shell is crosslinked, there are problems with respect to the sealing against moisture.

Aus.der DE 73 40:330 U geht eine Vorrichtung zur Zugentlastung.von Kontaktstellen eines elektrischen Steckers hervor, der an eine gummiisolierte elektrische Leitung angespritzt ist. Auf der Leitung ist ein festsitzender Kunststoffring angeordnet, dessen Bohrung mindestens an einer Stelle einen gegenüber dem Leitungsdurchmesser kleineren Durchmesser aufweist. Der Kunststoffring ist vom Steckerkörper des Steckers umschlossen.From the DE 73 40: 330 U goes out a device for Zugentlastung.von contact points of an electrical connector, which is molded onto a rubber-insulated electrical line. On the line a fixed plastic ring is arranged, the bore has at least at one point a smaller diameter compared to the diameter of the pipe. The plastic ring is enclosed by the plug body of the plug.

Bei dem Verfahren nach der eingangs erwähnten EP 2 485 336 A1 wird vor dem Spritzen des Schutzkörpers ein von zwei Teilen einer Kapsel umgebener Dichtungsring auf den Mantel der Leitung aufgebracht, der ebenso wie die Teile der Kapsel an der Oberfläche des Mantels anliegt und mit umspritzt wird. Die Teile der Kapsel verbinden sich feuchtigkeitsdicht mit dem Schutzkörper. Dieses Verfahren hat sich in der Praxis bewährt. Wegen der oft nicht vollständig runden, sondern eher welligen Oberfläche des Mantels der Leitung ist der umlaufende Spalt zwischen dem Dichtungsring und den Teilen der Kapsel einerseits sowie dem Mantel andererseits aber in ungünstigen Fällen nicht vollständig abgedichtet.In the method according to the above-mentioned EP 2 485 336 A1 is applied prior to spraying the protective body surrounded by two parts of a capsule sealing ring on the jacket of the conduit, which rests as well as the parts of the capsule on the surface of the shell and is encapsulated with. The parts of the capsule connect moisture-tight with the protective body. This method has proven itself in practice. Because of the often not completely round, but rather wavy surface of the jacket of the line, the circumferential gap between the sealing ring and the parts of the capsule on the one hand and the shell on the other hand, in unfavorable cases, not completely sealed.

Der Erfindung liegt die Aufgabe zugrunde, das eingangs geschilderte Verfahren so zu gestalten, daß bei einfacher Ausführung eine unter allen möglichen Bedingungen feuchtigkeitsdichte Ausführung des Kupplungsteils sichergestellt ist.The invention has for its object to make the initially described method so that in a simple design, a moisture-proof embodiment of the coupling part is ensured under all possible conditions.

Diese Aufgabe wird entsprechend den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöst. Patentanspruch 3 bezieht sich auf eine Anordnung mit einem entsprechend hergestellten Kupplungsteil.This object is achieved according to the characterizing features of claim 1. Claim 3 refers to an arrangement with a correspondingly produced coupling part.

Dieses Verfahren ist besonders einfach durchführbar, weil neben den für die Herstellung einer elektrisch leitenden Verbindung zwischen den Leitern der Leitung und den Kontaktelementen des Kupplungsteils erforderlichen Arbeitsschritten nur mindestens eine in Umfangsrichtung der Leitung umlaufende Nut in den Mantel derselben geschnitten werden muß, beispielsweise mittels eines Fräsers. In die Nut wird vor dem Spritzen des Schutzkörpers ein handelsüblicher O-Ring eingesetzt, der in aufgeweitetem Zustand auf die Leitung aufgeschoben wird und sich mit entsprechender Vorspannung fest an die seitlichen Begrenzungen der Nut anlegt.This method is particularly simple to carry out, because in addition to the steps required for the production of an electrically conductive connection between the conductors of the line and the contact elements of the coupling part only at least one peripheral circumferential groove in the circumferential direction of the conduit must be cut into the shell thereof, for example by means of a milling cutter , In the groove, a commercial O-ring is used before spraying the protective body, which in the expanded state the line is pushed and firmly applies with appropriate bias to the lateral boundaries of the groove.

Die Nut ist damit durch den O-Ring mit dem Vorteil hermetisch abgedichtet, daß sich mögliche unrunde Bereiche an der Oberfläche des Mantels der Leitung bezüglich der zu erzielenden Abdichtung nicht auswirken können. Das auf das Material des O-Rings abgestimmte Material des abschließend gespritzten Schutzkörpers verbindet sich fest und feuchtigkeitsdicht mit dem O-Ring. Der Bereich zwischen dem Schutzkörper und dem Mantel der Leitung ist dadurch umlaufend hermetisch dicht verschlossen. Es kann sich daher auch unter sehr rauhen Bedingungen keine Feuchtigkeit entlang der Leitung bis zu der Verbindungsstelle zwischen den Leitern der Leitung und den Kontaktelementen des Kupplungsteils ausbreiten.The groove is thus hermetically sealed by the O-ring with the advantage that possible non-circular areas on the surface of the jacket of the conduit with respect to the seal to be achieved can not affect. The material of the final sprayed protective body, matched to the material of the O-ring, bonds firmly and moisture-tight to the O-ring. The area between the protective body and the jacket of the pipe is hermetically sealed thereby circumferentially. Therefore, even under very harsh conditions, moisture can not propagate along the line to the junction between the conductors of the line and the contact elements of the coupling part.

Das Verfahren nach der Erfindung wird im folgenden anhand der Zeichnungen als Ausführungsbeispiel erläutert.The method according to the invention will be explained below with reference to the drawings as an exemplary embodiment.

Es zeigen:

  • Fig. 1 in schematischer Darstellung eine abgemantelte elektrische Leitung mit zwei Adern sowie zwei davon getrennte Kontaktelemente.
  • Fig. 2 einen Schnitt durch Fig. 1 längs der Linie II - II.
  • Fig. 3 ebenfalls schematisch einen Schnitt durch ein mit dem Verfahren nach der Erfindung hergestelltes Kupplungsteil.
  • Fig. 4 eine Einzelheit aus Fig. 3 in vergrößerter Darstellung.
Show it:
  • Fig. 1 a schematic representation of a stripped electrical cable with two wires and two separate contact elements.
  • Fig. 2 a cut through Fig. 1 along the line II - II.
  • Fig. 3 also schematically a section through a manufactured with the method according to the invention coupling part.
  • Fig. 4 a detail Fig. 3 in an enlarged view.

In Fig. 1 ist das Ende einer elektrischen Leitung 1 dargestellt, die zwei elektrische Adern 2 und 3 aufweist, welche von einem gemeinsamen Mantel 4 (Fig. 2) aus Isoliermaterial umgeben sind. Die Adern 2 und 3 weisen jeweils einen von einer Isolierung umgebenen elektrischen Leiter 5 bzw. 6 auf. Sie sind in der Leitung 1 vorzugsweise miteinander verseilt. Die Leitung 1 kann auch mehr als zwei Adern haben, die von einem gemeinsamen Mantel aus Isoliermaterial umgeben sind.In Fig. 1 the end of an electrical line 1 is shown, which has two electrical wires 2 and 3, which from a common jacket 4 (FIG. Fig. 2 ) are surrounded by insulating material. The wires 2 and 3 each have an electrical conductor 5 or 6 surrounded by an insulation. They are preferably stranded in the line 1 with each other. The line 1 may also have more than two wires, which are surrounded by a common sheath of insulating material.

In Fig. 1 sind auch zwei elektrische Kontaktelemente 7 und 8 dargestellt, mit denen die Leiter 5 und 6 der Leitung 1 elektrisch leitend zu verbinden sind. Die Kontaktelemente 7 und 8 können Buchsenkontakte oder Steckerstifte sein. Sie bestehen beispielsweise aus Kupfer oder aus einer Kupferlegierung.In Fig. 1 are also two electrical contact elements 7 and 8 are shown, with which the conductors 5 and 6 of the line 1 are to be electrically connected. The contact elements 7 and 8 can be socket contacts or plug pins. They consist for example of copper or a copper alloy.

Fig. 3 zeigt einen Schnitt durch ein Kupplungsteil K, das am Ende der Leitung 1 angebracht ist. Die Leiter 5 und 6 der Adern 2 und 3 sind elektrisch leitend mit den Kontaktelementen 7 und 8 verbunden, beispielsweise durch Crimpen. Die Verbindungsstelle zwischen den Leitern 5 und 6 und den Kontaktelementen 7 und 8 ist von einem durch Spritzgießen hergestellten, aus Isoliermaterial bestehenden Schutzkörper 9 umgeben, der sich bis über die Leitung 1 erstreckt. Der Schutzkörper 9 umgibt auch die Kontaktelemente 7 und 8 auf ihrer ganzen axialen Länge, allerdings unter Freilassung ihrer der Leitung 1 abgewandten Stirnseiten, die damit für das Aufstecken auf Gegenkontakte oder zum Einstecken von Gegenkontakten zur Verfügung stehen. Er besteht vorzugsweise aus Polyamid oder aus einem thermoplastischen Polyurethan (TPU) oder aus Polybutylenterephthalat (PBT). Fig. 3 shows a section through a coupling part K, which is attached to the end of the line 1. The conductors 5 and 6 of the wires 2 and 3 are electrically connected to the contact elements 7 and 8, for example by crimping. The Junction between the conductors 5 and 6 and the contact elements 7 and 8 is surrounded by a manufactured by injection molding, consisting of insulating protective body 9, which extends over the line 1. The protective body 9 also surrounds the contact elements 7 and 8 over their entire axial length, but with the release of their facing away from the line 1 end faces, which are thus available for plugging on mating contacts or for insertion of mating contacts available. It is preferably made of polyamide or of a thermoplastic polyurethane (TPU) or polybutylene terephthalate (PBT).

Vom Schutzkörper 9 umgeben ist auch ein als O-Ring 10 ausgeführtes Dichtungselement, das auf dem Mantel 4 der Leitung 1 angebracht ist, und zwar in einer aus Fig. 4 ersichtlichen, in Umfangsrichtung der Leitung 1 umlaufenden Nut 11. Der O-Ring 10 besteht vorzugsweise aus einem Polyurethanwerkstoff, wie beispielsweise einem thermoplastischen Polyurethan oder Polyurethan an sich. Die Nut 11 und der O-Ring 10 sind so bemessen, daß der O-Ring in der aus Fig. 4 ersichtlichen Montageposition dicht und fest an den beiden seitlichen Rändern der Nut 11 anliegt. Es können auch zwei oder mehr in Umfangsrichtung der Leitung 1 umlaufende und parallel zueinander positionierte Nuten im Mantel 4 der Leitung 1 angebracht sein, in welchen in Montageposition jeweils ein O-Ring angeordnet ist. Alle O-Ringe sind gegebenenfalls im fertigen Kupplungsteil K vom Schutzkörper 9 abgedeckt.Surrounded by the protective body 9 is also designed as an O-ring 10 sealing element, which is mounted on the jacket 4 of the line 1, in one of Fig. 4 apparent, in the circumferential direction of the line 1 circumferential groove 11. The O-ring 10 is preferably made of a polyurethane material, such as a thermoplastic polyurethane or polyurethane itself. The groove 11 and the O-ring 10 are dimensioned so that the O-ring in the off Fig. 4 apparent mounting position tightly and firmly against the two lateral edges of the groove 11. It can also be two or more circumferential in the circumferential direction of the line 1 and parallel to each other positioned grooves in the jacket 4 of the line 1 are mounted, in which in each case an O-ring is arranged in the mounting position. All O-rings are possibly covered in the finished coupling part K by the protective body 9.

Das Verfahren nach der Erfindung wird beispielweise wie folgt durchgeführt:

  • Der Mantel 4 der Leitung 1 wird an deren Ende auf einer vorgegebenen Länge entfernt, so daß die Adern 2 und 3 freiliegen. Die Adern 2 und 3 werden dann an ihren Enden abisoliert, so daß die Leiter 5 und 6 zum elektrisch leitenden Verbinden mit den Kontaktelementen 7 und 8 zur Verfügung stehen.
  • Anschließend wird beispielsweise mittels eines Fräsers die Nut 11 in den Mantel 4 eingeschnitten, in welche danach der unter Vorspannung stehende O-Ring 10 eingesetzt wird. Dazu kann der O-Ring 10 in etwas aufgeweitetem Zustand vorzugsweise vom Ende der Leitung 1 mit den freigelegten Adern 2 und 3 her auf dieselbe aufgeschoben werden. Er greift in Montageposition in die Nut 11 ein und legt sich im nicht mehr aufgeweiteten Zustand mit entsprechend bemessener Vorspannung dicht und fest an die seitlichen Wände der Nut 11 an.
The process according to the invention is carried out, for example, as follows:
  • The jacket 4 of the line 1 is removed at its end to a predetermined length, so that the wires 2 and 3 are exposed. The wires 2 and 3 are then stripped at their ends, so that the conductors 5 and 6 are available for electrically conductive connection with the contact elements 7 and 8.
  • Subsequently, for example, by means of a milling cutter, the groove 11 is cut into the jacket 4, in which then the biased O-ring 10 is inserted. For this purpose, the O-ring 10 can be pushed onto the same in a slightly expanded state, preferably from the end of the line 1 with the exposed wires 2 and 3 forth. He engages in the mounting position in the groove 11 and sets in the no longer expanded state with appropriately sized bias tight and firm against the side walls of the groove 11.

Die Nut 11 kann auch bereits vor dem Entfernen des Mantels 4 zur Freilegung der Adern 2 und 3 oder vor dem Abisolieren derselben in den Mantel 4 geschnitten werden. Das gilt auch für die Positionierung des O-Rings 10. Die Arbeitsgänge Entfernen des Mantels 4 und Abisolieren der Adern 2 und 3 werden dann anschließend durchgeführt.The groove 11 can also be cut into the jacket 4 before the removal of the jacket 4 to expose the wires 2 and 3 or before the stripping thereof. This also applies to the positioning of the O-ring 10. The operations of removing the jacket 4 and stripping the wires 2 and 3 are then carried out subsequently.

Nach Durchführung der geschilderten Arbeitsgänge - in welcher Reihenfolge auch immer - werden die Kontaktelemente 7 und 8 elektrisch leitend mit den Leitern 5 und 6 verbunden, und zwar - wie bereits erwähnt - mit Vorteil durch Crimpen. Das so vorbereitete Ende der Leitung 1 wird abschließend in ein Spritzgießwerkzeug gelegt, in welchem der Schutzkörper 9 gespritzt wird. Sein Material verbindet sich dicht und fest mit dem Material des O-Rings 10, so daß am Orte des O-Rings eine hermetisch dichte Sperre für entlang der Oberfläche des Mantels 4 der Leitung 1 sich ausbreitende Feuchtigkeit gegeben ist.After performing the described operations - in whatever order - the contact elements 7 and 8 are electrically connected to the conductors 5 and 6, and indeed - as already mentioned - with advantage by crimping. The thus prepared end of the line 1 is finally placed in an injection mold, in which the protective body 9 is injected. Its material connects tightly and firmly with the material of the O-ring 10, so that at the location of the O-ring a hermetically sealed barrier is provided for along the surface of the shell 4 of the line 1 spreading moisture.

Claims (3)

  1. Method for sealing an electrical coupling piece (K) against moisture, in which electrical conductors (5,6) of a line (1), which include a sheath (4) of insulating material jointly surrounding the conductors (5,6), are connected to electrical contact elements (7,8) of the coupling piece (K), where a ring-shaped sealing element (10) is placed on the sheath (4) of the line (1), and where a protective body (9) of insulating material is injection molded around the connecting point between conductors (5,6) and contact elements (7,8) and with the inclusion of the sealing element (10) around the line, characterized in
    - that at an end of the line (1), provided for the connection to the coupling piece (K), at least one annular groove (11) extending in the circumferential direction is cut into the sheath (4) of the line (1) and
    - that prior to injection molding of the protective body (9), an O-ring (10) serving as the sealing element is placed in the groove (11) which rests securely with a corresponding pretension against the lateral borders of the groove (11), and which consists of a material which adheres tightly and in a moisture proof manner to the insulating material of the finally produced protective body (9).
  2. Method according to claim 1, characterized in that the pretensioned O-ring (10) is pushed in an expanded state onto the line (1) and is placed in the groove (11) after the expanded state of the O-ring has ended.
  3. Arrangement with an electrical coupling piece (K) and an electrical line (1), onto which the coupling piece (K) is mounted in a moisture proof manner, comprising:
    - a line (1) which comprises electrical conductors (5,6) and a common sheath (4) of insulating material surrounding the conductors,
    - a coupling piece (K) with electrical contact elements (7,8) which are electrically conductively connected to the conductors (5,6) of the line (1),
    - a ring shaped sealing element (10), which is placed on the sheath (4) of the line (1),
    - a protective body (9) of insulating material produced by injection molding, where the protective body (9) is injection molded around the connecting point between conductors (5,6) and contact elements (7,8) and with the inclusion of the sealing element (10), so that the protective body (9) extends beyond the contact elements (7,8) on the one hand and the line (1) on the other hand,
    characterized in
    - that the coupling piece (K) is manufactured using the method according to claims 1 or 2 and
    - that in the area covered by the protective body (1), an O-ring (10) is arranged as a sealing element in a groove (11) cut into the sheath (4) of the line (1), which rests securely with corresponding pretension against the lateral borders of the groove (11) and which is made of a material which adheres tightly and in a moisture proof manner to the insulating material of the protective body (9).
EP20120306084 2012-09-10 2012-09-10 Method for sealing an electrical coupling section and coupling section produced according to this method Active EP2706620B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20120306084 EP2706620B1 (en) 2012-09-10 2012-09-10 Method for sealing an electrical coupling section and coupling section produced according to this method
ES12306084.0T ES2527996T3 (en) 2012-09-10 2012-09-10 Waterproofing procedure of an electrical coupling part and coupling part manufactured in accordance with said procedure
CN201310403567.9A CN103682793B (en) 2012-09-10 2013-09-06 For sealing the method and connector of electrical connector
US14/021,072 US9106002B2 (en) 2012-09-10 2013-09-09 Method for sealing an electrical coupling piece, and coupling piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120306084 EP2706620B1 (en) 2012-09-10 2012-09-10 Method for sealing an electrical coupling section and coupling section produced according to this method

Publications (2)

Publication Number Publication Date
EP2706620A1 EP2706620A1 (en) 2014-03-12
EP2706620B1 true EP2706620B1 (en) 2014-11-05

Family

ID=46940430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120306084 Active EP2706620B1 (en) 2012-09-10 2012-09-10 Method for sealing an electrical coupling section and coupling section produced according to this method

Country Status (4)

Country Link
US (1) US9106002B2 (en)
EP (1) EP2706620B1 (en)
CN (1) CN103682793B (en)
ES (1) ES2527996T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2980464A1 (en) * 2014-07-29 2016-02-03 GWF MessSysteme AG Sealing body, method for producing the sealing body and a housing
CN112886356A (en) * 2021-01-18 2021-06-01 周亚坤 Short circuit and insulation isolation treatment process for middle part of earphone with three forks

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7340330U (en) 1974-02-14 Gutehoffnungshuette Ag Device for strain relief on plastic plugs
DE3412786A1 (en) * 1984-04-05 1985-10-17 Klein, Schanzlin & Becker Ag, 6710 Frankenthal WIRING
US5126619A (en) * 1990-07-20 1992-06-30 Koito Manufacturing Co., Ltd. Discharge lamp unit
US5941718A (en) * 1995-05-22 1999-08-24 Didier; Robert G. Aircraft ground power cable connector
DE19530422A1 (en) * 1995-08-18 1997-02-20 Vdo Schindling Cable grommet suitable for oil sensor inside oilpan
US5984724A (en) * 1998-04-07 1999-11-16 Geo Space Corporation Waterproof low temperature geophysical connector
AU1365401A (en) * 1999-09-13 2001-04-17 Payson, Brian D. Data signal connector with protective overmold
US6482036B1 (en) * 2002-06-13 2002-11-19 Blaine L. Broussard Waterproof electrical connector
DE202005010927U1 (en) * 2005-07-12 2006-11-16 Cooper Crouse-Hinds Gmbh Explosion-proof connector
EP1921635B2 (en) * 2006-11-10 2014-04-23 Nexans Electrical connecting cable for a motor vehicle sub-unit
EP2485336A1 (en) * 2011-02-02 2012-08-08 Nexans Coupling unit for lines
EP2541691A1 (en) * 2011-06-29 2013-01-02 Nexans Cable with injection moulded coupling section
JP5890119B2 (en) * 2011-07-20 2016-03-22 矢崎総業株式会社 Low profile connector and manufacturing method thereof

Also Published As

Publication number Publication date
CN103682793B (en) 2017-11-21
ES2527996T3 (en) 2015-02-03
US20140073162A1 (en) 2014-03-13
CN103682793A (en) 2014-03-26
EP2706620A1 (en) 2014-03-12
US9106002B2 (en) 2015-08-11

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