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EP3622588B1 - Method for assembling a plug on a multi-core sheathed cable, and electrical plug - Google Patents

Method for assembling a plug on a multi-core sheathed cable, and electrical plug Download PDF

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Publication number
EP3622588B1
EP3622588B1 EP18727686.0A EP18727686A EP3622588B1 EP 3622588 B1 EP3622588 B1 EP 3622588B1 EP 18727686 A EP18727686 A EP 18727686A EP 3622588 B1 EP3622588 B1 EP 3622588B1
Authority
EP
European Patent Office
Prior art keywords
sealing element
cores
receptacle
sealing
sheath
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
EP18727686.0A
Other languages
German (de)
French (fr)
Other versions
EP3622588C0 (en
EP3622588A1 (en
Inventor
Heinz-Dieter WINKELMANN
Dany BECKER
Tanil Gezgin
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.)
Leoni Bordnetz Systeme GmbH
Original Assignee
Leoni Bordnetz Systeme GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Leoni Bordnetz Systeme GmbH filed Critical Leoni Bordnetz Systeme GmbH
Publication of EP3622588A1 publication Critical patent/EP3622588A1/en
Application granted granted Critical
Publication of EP3622588C0 publication Critical patent/EP3622588C0/en
Publication of EP3622588B1 publication Critical patent/EP3622588B1/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
    • H01R13/5208—Sealing means between cable and housing, e.g. grommet having at least two cable receiving openings
    • 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
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/436—Securing a plurality of contact members by one locking piece or operation
    • H01R13/4367—Insertion of locking piece from the rear
    • 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
    • H01R13/5045—Bases; Cases composed of different pieces different pieces being moulded, cemented, welded, e.g. ultrasonic, or swaged together different pieces being assembled by press-fit
    • 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
    • H01R13/521—Sealing between contact members and housing, e.g. sealing insert
    • 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
    • H01R13/5202—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
    • H01R2103/00—Two poles

Definitions

  • the invention relates to the assembly of a multi-core, in particular two-core, sheathed cable to an electrical plug and an electrical plug with a sheathed cable connected to it.
  • the second embodiment of the EP 0696827 A2 discloses the preamble of claim 4.
  • the invention is based on the object of enabling the simplest possible assembly of a plug with a sheathed cable connected therein and at the same time ensuring a good sealing effect.
  • the invention is further solved by an electrical plug with a multi-core sheathed cable connected to it according to claim 4.
  • the plug is arranged on a multi-core sheathed cable which extends in a longitudinal direction and has a plurality of cores surrounded by a cable sheath.
  • the procedure is such that the sealing element made of a sealing material is first applied to the wires, in particular pushed on.
  • the sealing element has an individual feedthrough for each wire through the sealing element.
  • the sheathed cable prepared in this way with the arranged sealing element is then inserted from behind into a plug housing of the plug and mounted therein.
  • the sealing element is inserted into a rear receptacle of the plug housing until the sealing element lies in the receptacle in a particularly sealing manner.
  • the sealing element is preferably moved along the wires into the receptacle.
  • a sealing jacket is then attached, which extends from the rear end of the connector housing to the cable jacket.
  • the sealing element is a one-piece, i.e. monolithic part, which lies sealingly in the receptacle of the plug housing. Because the sealing element is made in one piece, the sealing element can be manufactured easily and cost-effectively. Furthermore, due to the one-piece nature of the sealing element, a better sealing effect is achieved than, for example, in comparison to a multi-part sealing element.
  • the sealing element is first applied to the plurality of wires and then - then after attaching the sealing element - a contact element is attached to the end of each wire, for example crimped.
  • the contact elements are used to mount the wires in the plug housing of the plug.
  • automated methods are preferably used, through which advantages with regard to the assembly process are achieved. Assembly can be done easier and faster.
  • the casing is preferably applied in particular by a casting or spraying process.
  • a casting or spraying process for example, known casting or spraying processes are used, which further simplify and accelerate the assembly process.
  • the sealing behavior of the sealing element can be influenced by the injection force. This means that the greater the press-in force, the stronger the sealing element is pressed into the receptacle and the better the sealing behavior. Sealing behavior is understood to mean a sealing effect of the sealing element, for example longitudinal watertightness.
  • the sealing element is expediently designed in the manner of a cone element, i.e. it tapers in the longitudinal direction.
  • the injection process and the associated press-in force improve the sealing effect between the sealing element and the wall of the receptacle on the one hand and between the sealing element and the individual wires on the other hand, so that a reliable seal is guaranteed.
  • the cone shape creates a simple geometry of the sealing element, which enables simple production.
  • the sealing element generally has a circumferential lateral surface on, whereby this encloses an acute angle to the longitudinal direction. This is, for example, in the range of 5° - 35° and preferably in the range of 10° - 20°.
  • the entire lateral surface of the sealing element is preferably smooth and in particular designed without circumferential ribs or grooves.
  • the sealing element is generally a prefabricated one-piece component which - apart from the bushings for the individual wires - has no further openings or slots or the like.
  • the sealing element is also made of a softer material than the plug housing. In other words, the sealing element has a lower hardness than the plug housing.
  • the sealing element has a thermoplastic polyurethane material (TPU material). This has the advantage that the sealing element fits into the plug housing in a form-fitting manner due to the press-in force and thus increases the sealing effect.
  • the sealing element By designing the sealing element as a one-piece component, a significantly simplified assembly is achieved in particular. No complicated handling of two half-shells is required. Rather, it is possible to simply slide the sealing element onto the wires. This is conveniently done automatically. The displacement of the sealing element along the wires into the receptacle is also preferably carried out automatically, for example with the help of an auxiliary tool.
  • the sealing effect of the sealing element on the one hand to the wall of the receptacle of the plug housing and on the other hand to the individual wires is preferably further influenced and adjusted by the choice of injection pressure during injection molding.
  • the sheathed cable is preferably a two-core sheathed cable with two cores.
  • Fig. 1 a perspective exploded view of a pre-assembled plug 2 is shown, which is assembled onto a sheathed cable 4.
  • the sheathed cable 4 is designed as a two-core sheathed cable with two wires 10 which are surrounded by a cable sheath 12.
  • the wires 10 are each stripped of insulation at their front end (i.e. the end with which they are arranged in the plug 2).
  • a contact element 14 is attached to the stripped point of the wires 10.
  • a sealing element 16, which consists of a soft, elastic plastic material, in particular TPU, is pushed onto the two wires 10.
  • the sealing element 16 is designed as a cone element, i.e. has a lateral surface 18 which tapers with respect to a longitudinal direction 20 at an acute angle to this longitudinal direction 20. In order to push the sealing element 16 onto the wires 10, the sealing element 16 has an individual feedthrough 17 for the wires 10.
  • the sealing element 16 has an at least approximately oval base area.
  • the base area has two opposite rectilinear sections, each connected to one another via a (circular) arc are.
  • the base area can also be circular.
  • the lateral surface 18 is therefore designed in particular in the manner of a conical lateral surface.
  • the plug 2 has a plug housing 6.
  • the plug housing 6 is preferably a plastic housing and has a receptacle 22 on its rear end facing the sheathed cable 4, which is designed to receive the sealing element 16.
  • this receptacle 22 also has a conical design complementary to the sealing element 16.
  • the plug housing 6 has webs 24 or ribs on its outer wall 21 in the area of the receptacle 22.
  • the webs 24 are designed all around, with a central web 24 being interrupted in the exemplary embodiment.
  • the webs 24 create a positive connection with a casing 8 (cf. Fig. 3 ) is formed, which is effective in and against the longitudinal direction 20.
  • the interruption of the middle web 24 also creates a positive connection that is effective in the circumferential direction.
  • the webs 24 are delimited by a circumferential collar 26.
  • a sprayed or cast-on sheath 8 is applied, which extends to the cable jacket 12 of the sheathed cable and thus ensures a reliable and secure seal.
  • Fig. 2 the plug 2 is shown in an assembled state.
  • the wires 10 provided with the contact elements 14 were inserted into the plug housing 6.
  • the sealing element 16 pushed onto the wires 10 is arranged in the receptacle 22 of the plug housing 6, preferably in a form-fitting manner.
  • Fig. 3 the finished plug 2 is shown with the attached sheathed cable 4.
  • the plug 2 has the plug housing 6 and a sprayed-on casing 8, which encloses the area into which the sheathed cable 4 is inserted into the plug housing 6.
  • the casing 8 extends to the collar 26 and lies against the front side of it. It is poured or sprayed on and is solid. Due to the pressure generated during application, the sealing element 16 is pressed into the receptacle 22 in the longitudinal direction 20, so that the sealing effect is improved.

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

Description

Die Erfindung betrifft die Montage einer mehradrigen, insbesonderen zweiadrigen Mantelleitung an einen elektrischen Stecker sowie einen elektrischen Stecker mit daran angeschlossener Mantelleitung.The invention relates to the assembly of a multi-core, in particular two-core, sheathed cable to an electrical plug and an electrical plug with a sheathed cable connected to it.

Bei der Konfektionierung von Steckern ist häufig wichtig, eine Abdichtung gegen Eindringen von Feuchtigkeit zuverlässig zu gewährleisten. Hierzu ist es erforderlich, dass die einzelnen Adern zuverlässig abgedichtet werden.When assembling connectors, it is often important to reliably ensure a seal against the ingress of moisture. For this it is necessary that the individual wires are reliably sealed.

In der WO 2014/040699 A1 ist ein elektrischer Stecker mit einer daran angeschlossenen Mantelleitung beschrieben, bei der zu Zwecken der Abdichtung ein konusförmiges, aus zwei Halbschalen bestehendes Dichtelement als Einlegeteil vorgesehen ist, welches zwischen die Adern der Mantelleitung und einer Aufnahme eines Steckergehäuses angeordnet ist. Durch eine anschließende Umspritzung erfolgt eine zuverlässige Abdichtung.In the WO 2014/040699 A1 an electrical plug with a sheathed cable connected to it is described, in which, for sealing purposes, a conical sealing element consisting of two half-shells is provided as an insert, which is arranged between the cores of the sheathed cable and a receptacle of a plug housing. A reliable seal is achieved through subsequent overmolding.

Die zweite Ausführungsform des EP 0696827 A2 offenbart den Oberbegriff des Anspruchs 4.The second embodiment of the EP 0696827 A2 discloses the preamble of claim 4.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine möglichst einfache Montage eines Steckers mit darin angeschlossener Mantelleitung zu ermöglichen und gleichzeitig eine gute Dichtwirkung zu gewährleisten.Based on this, the invention is based on the object of enabling the simplest possible assembly of a plug with a sheathed cable connected therein and at the same time ensuring a good sealing effect.

Die Aufgabe wird gemäß der Erfindung gelöst durch ein Verfahren zur Montage eines Steckers mit den Merkmalen des Anspruchs 1.The object is achieved according to the invention by a method for assembling a plug with the features of claim 1.

Bevorzugte Weiterbildungen sind in den abhängigen Ansprüchen enthalten.Preferred further training is included in the dependent claims.

Die Erfindung wird weiterhin gelöst durch einen elektrischen Stecker mit einer daran angeschlossenen mehradrigen Mantelleitung gemäß Anspruch 4.The invention is further solved by an electrical plug with a multi-core sheathed cable connected to it according to claim 4.

Die im Hinblick auf das Verfahren aufgeführten Vorteile und bevorzugten Ausgestaltungen sind sinngemäß auf den elektrischen Stecker zu übertragen und umgekehrt.The advantages and preferred embodiments listed with regard to the method are to be transferred analogously to the electrical plug and vice versa.

Der Stecker ist an einer mehradrigen Mantelleitung angeordnet, die sich in einer Längsrichtung erstreckt und mehrere von einem Leitungsmantel umgeben Adern aufweist.The plug is arranged on a multi-core sheathed cable which extends in a longitudinal direction and has a plurality of cores surrounded by a cable sheath.

Bei der Montage des Steckers wird derart vorgegangen, dass zunächst das Dichtelement aus einem Dichtmaterial auf die Adern aufgebracht, insbesondere aufgeschoben wird. Das Dichtelement weist hierzu für jede Ader eine einzelweise Durchführung durch das Dichtelement auf.When assembling the plug, the procedure is such that the sealing element made of a sealing material is first applied to the wires, in particular pushed on. For this purpose, the sealing element has an individual feedthrough for each wire through the sealing element.

Anschließend wird die derart vorbereitete Mantelleitung mit dem angeordneten Dichtelement von hinten in ein Steckergehäuse des Steckers eingeführt und in diesem montiert. Hierbei wird das Dichtelement in eine rückseitige Aufnahme des Steckergehäuses eingeführt, bis das Dichtelement insbesondere dichtend in der Aufnahme einliegt. Vorzugsweise wird hierzu das Dichtelement entlang der Adern in die Aufnahme hinein verschoben. Danach erfolgt noch die Anbringung einer abdichtenden Ummantelung, die sich von dem rückseitigen Ende des Steckergehäuses bis zum Leitungsmantel erstreckt.The sheathed cable prepared in this way with the arranged sealing element is then inserted from behind into a plug housing of the plug and mounted therein. Here, the sealing element is inserted into a rear receptacle of the plug housing until the sealing element lies in the receptacle in a particularly sealing manner. For this purpose, the sealing element is preferably moved along the wires into the receptacle. A sealing jacket is then attached, which extends from the rear end of the connector housing to the cable jacket.

Von besonderer Bedeutung bei der erfindungsgemäßen Lösung ist die Ausbildung des Dichtelements als einstückiges, also monolithisches Teil, welches dichtend in der Aufnahme des Steckergehäuses einliegt. Durch die Einstückigkeit des Dichtelements ist eine einfach und kostengünstige Fertigung des Dichtelements erreicht. Weiterhin ist durch die Einstückigkeit des Dichtelements eine bessere Dichtwirkung als beispielsweise im Vergleich zu einem mehrteiligen Dichtelement erreicht.Of particular importance in the solution according to the invention is the design of the sealing element as a one-piece, i.e. monolithic part, which lies sealingly in the receptacle of the plug housing. Because the sealing element is made in one piece, the sealing element can be manufactured easily and cost-effectively. Furthermore, due to the one-piece nature of the sealing element, a better sealing effect is achieved than, for example, in comparison to a multi-part sealing element.

Erfindungsgemäß wird zuerst das Dichtelement auf die mehreren Adern aufgebracht und anschließend - anschließend nach dem Anbringen des Dichtelements - endseitig an jeweils eine Ader ein Kontaktelement angebracht, beispielsweise angecrimpt. Mit den Kontaktelementen werden die Adern im Steckergehäuse des Steckers montiert. Hierzu, insbesondere zur Aufbringung des Dichtelements auf die Adern, werden bevorzugt automatisierte Verfahren herangezogen, durch die Vorteile hinsichtlich des Montageablaufs erreicht sind. Die Montage kann einfacher und schneller erfolgen.According to the invention, the sealing element is first applied to the plurality of wires and then - then after attaching the sealing element - a contact element is attached to the end of each wire, for example crimped. The contact elements are used to mount the wires in the plug housing of the plug. For this purpose, in particular for applying the sealing element to the wires, automated methods are preferably used, through which advantages with regard to the assembly process are achieved. Assembly can be done easier and faster.

Die Ummantelung wird vorzugsweise insbesondere durch ein Gieß- oder Spritzverfahren aufgebracht. Hierzu werden beispielsweise bekannte Gieß- oder Spritzverfahren herangezogen, welche den Montageprozess weiter vereinfachen und beschleunigen.The casing is preferably applied in particular by a casting or spraying process. For this purpose, for example, known casting or spraying processes are used, which further simplify and accelerate the assembly process.

Zweckdienlicherweise wird hierbei, also beim Aufspritzen oder Aufgießen der Ummantelung eine in Längsrichtung gerichtete Einpresskraft ausgeübt, sodass das Dichtelement durch die Einpresskraft in die Aufnahme eingepresst wird. Vorteilhafterweise kann hierdurch ein Dichtverhalten des Dichtelements durch die Einspritzkraft beeinflusst werden. D.h. je größer die Einpresskraft ist, umso stärker wird das Dichtelement in die Aufnahme gepresst und umso besser ist das Dichtverhalten. Unter Dichtverhalten wird hierbei eine Abdichtwirkung des Dichtelements, beispielsweise eine Längswasserdichtigkeit verstanden.Expediently, when spraying or pouring on the casing, a longitudinally directed press-in force is exerted, so that the sealing element is pressed into the receptacle by the press-in force. Advantageously, the sealing behavior of the sealing element can be influenced by the injection force. This means that the greater the press-in force, the stronger the sealing element is pressed into the receptacle and the better the sealing behavior. Sealing behavior is understood to mean a sealing effect of the sealing element, for example longitudinal watertightness.

Das Dichtelement ist zweckdienlicherweise nach Art eines Konuselements ausgebildet, verjüngt sich also in Längsrichtung. Dadurch wird durch den Spritzprozess und der damit verbundenen Einpresskraft die Dichtwirkung einerseits zwischen dem Dichtelement und der Wandung der Aufnahme sowie andererseits zwischen dem Dichtelement und den einzelnen Adern verbessert, sodass eine zuverlässige Abdichtung gewährleistet ist. Zudem ist durch die Konusform eine einfache Geometrie des Dichtelements ausgebildet, die eine einfache Fertigung ermöglicht.The sealing element is expediently designed in the manner of a cone element, i.e. it tapers in the longitudinal direction. As a result, the injection process and the associated press-in force improve the sealing effect between the sealing element and the wall of the receptacle on the one hand and between the sealing element and the individual wires on the other hand, so that a reliable seal is guaranteed. In addition, the cone shape creates a simple geometry of the sealing element, which enables simple production.

Im Hinblick auf die zuverlässige Dichtwirkung ist die spezielle Konusform von besonderer Bedeutung. Das Dichtelement weist allgemein eine umlaufende Mantelfläche auf, wobei diese umlaufend einen spitzen Winkel zur Längsrichtung einschließt. Dieser liegt beispielsweise im Bereich von 5°- 35° und vorzugsweise im Bereich von 10° - 20°. Die gesamte Mantelfläche des Dichtelements ist vorzugsweise glatt und insbesondere ohne umlaufende Rippen oder Nuten ausgebildet.With regard to the reliable sealing effect, the special cone shape is of particular importance. The sealing element generally has a circumferential lateral surface on, whereby this encloses an acute angle to the longitudinal direction. This is, for example, in the range of 5° - 35° and preferably in the range of 10° - 20°. The entire lateral surface of the sealing element is preferably smooth and in particular designed without circumferential ribs or grooves.

Bei dem Dichtelement handelt es sich allgemein um ein vorgefertigtes einstückiges Bauteil, welches - bis auf die Durchführungen für die einzelnen Adern - keine weiteren Öffnungen oder Schlitze oder dergleichen aufweist.The sealing element is generally a prefabricated one-piece component which - apart from the bushings for the individual wires - has no further openings or slots or the like.

Das Dichtelement ist darüber hinaus aus einem weicheren Material als das Steckergehäuse ausgebildet. Mit anderen Worten weist das Dichtelement eine geringere Härte auf als das Steckergehäuse. Das Dichtelement weist ein Thermoplastisches Polyurethan Material (TPU-Material) auf. Dies hat den Vorteil, dass sich das Dichtelement durch die Einpresskraft formschlüssig in das Steckergehäuse einfügt und somit die Dichtwirkung erhöht.The sealing element is also made of a softer material than the plug housing. In other words, the sealing element has a lower hardness than the plug housing. The sealing element has a thermoplastic polyurethane material (TPU material). This has the advantage that the sealing element fits into the plug housing in a form-fitting manner due to the press-in force and thus increases the sealing effect.

Durch die Ausgestaltung des Dichtelements als einstückiges Bauteil ist insbesondere eine deutlich vereinfachte Montage erzielt. Es ist keine aufwendige Handhabung von zwei Halbschalen erforderlich. Vielmehr ist ein einfaches Aufschieben des Dichtelements auf die Adern ermöglicht. Dies erfolgt zweckdienlicherweise automatisiert. Auch das Verschieben des Dichtelements entlang der Adern in die Aufnahme hinein erfolgt vorzugsweise automatisiert, beispielsweise mit Hilfe eines Hilfswerkzeugs.By designing the sealing element as a one-piece component, a significantly simplified assembly is achieved in particular. No complicated handling of two half-shells is required. Rather, it is possible to simply slide the sealing element onto the wires. This is conveniently done automatically. The displacement of the sealing element along the wires into the receptacle is also preferably carried out automatically, for example with the help of an auxiliary tool.

Insgesamt ist hierdurch eine automatisierte Montage des Steckers ermöglicht. Die Dichtwirkung des Dichtelements einerseits zur Wandung der Aufnahme des Steckergehäuses und andererseits zu den einzelnen Adern wird vorzugsweise weiterhin durch die Wahl des Einspritzdrucks beim Spritzgießen beeinflusst und eingestellt.Overall, this enables automated assembly of the plug. The sealing effect of the sealing element on the one hand to the wall of the receptacle of the plug housing and on the other hand to the individual wires is preferably further influenced and adjusted by the choice of injection pressure during injection molding.

Vorzugsweise handelt es sich bei der Mantelleitung um eine zweiadrige Mantelleitung mit zwei Adern.The sheathed cable is preferably a two-core sheathed cable with two cores.

Eine Ausführungsvariante wird nachfolgend anhand der Figuren näher erläutert. Diese zeigen in teilweise vereinfachten Darstellungen:

Fig. 1:
Eine perspektivische Darstellung einer Mantelleitung mit angebrachtem Dichtelement sowie angebrachten Kontaktelementen vor der Montage in ein Steckergehäuse,
Fig. 2:
die in der Figur 1 dargestellten Komponenten, nach dem die Kontaktelemente sowie das Dichtelement in das Steckergehäuse eingeschoben wurden, sowie
Fig. 3:
den endgefertigten Stecker mit angeschlagener Mantelleitung mit einer aufgespritzten Ummantelung.
An embodiment variant is explained in more detail below using the figures. These show in partially simplified representations:
Fig. 1:
A perspective view of a sheathed cable with attached sealing element and attached contact elements before assembly in a connector housing,
Fig. 2:
the ones in the Figure 1 components shown, after which the contact elements and the sealing element have been inserted into the connector housing, as well as
Fig. 3:
the finished plug with attached sheathed cable with a sprayed-on sheath.

In Fig. 1 ist eine perspektivische Explosionsdarstellung eines vorkonfektionierten Steckers 2 dargestellt, der an eine Mantelleitung 4 konfektioniert wird.In Fig. 1 a perspective exploded view of a pre-assembled plug 2 is shown, which is assembled onto a sheathed cable 4.

Die Mantelleitung 4 ist im Ausführungsbeispiel als eine zweiadrige Mantelleitung ausgebildet mit zwei Adern 10, die von einem Leitungsmantel 12 umgeben sind. An ihrem vorderen Ende (also dem Ende, mit dem sie in dem Stecker 2 angeordnet sind) sind die Adern 10 jeweils abisoliert. An die abisolierte Stelle der Adern 10 ist ein Kontaktelement 14 angebracht. Auf die beiden Adern 10 ist ein Dichtelement 16 aufgeschoben, welches aus einem weichen, elastischen Kunststoffmaterial, insbesondere TPU besteht. Das Dichtelement 16 ist als ein Konuselement ausgebildet, weist also eine Mantelfläche 18 auf, die sich bezüglich einer Längsrichtung 20 unter einem spitzen Winkel zu dieser Längsrichtung 20 verjüngt. Um das Dichtelement 16 auf die Adern 10 aufzuschieben, weist das Dichtelement 16 eine einzelweise Durchführung 17 für die Adern 10 auf.In the exemplary embodiment, the sheathed cable 4 is designed as a two-core sheathed cable with two wires 10 which are surrounded by a cable sheath 12. The wires 10 are each stripped of insulation at their front end (i.e. the end with which they are arranged in the plug 2). A contact element 14 is attached to the stripped point of the wires 10. A sealing element 16, which consists of a soft, elastic plastic material, in particular TPU, is pushed onto the two wires 10. The sealing element 16 is designed as a cone element, i.e. has a lateral surface 18 which tapers with respect to a longitudinal direction 20 at an acute angle to this longitudinal direction 20. In order to push the sealing element 16 onto the wires 10, the sealing element 16 has an individual feedthrough 17 for the wires 10.

Im Ausführungsbeispiel weist das Dichtelement 16 eine zumindest angenähert ovale Grundfläche auf. Die Grundfläche weist hierzu zwei gegenüberliegende geradlinige Abschnitte auf, die jeweils über einen (kreis-) Bogen miteinander verbunden sind. Alternativ hierzu kann die Grundfläche auch kreisförmig sein. Die Mantelfläche 18 ist daher insbesondere nach Art einer Kegelmantelfläche ausgebildet.In the exemplary embodiment, the sealing element 16 has an at least approximately oval base area. For this purpose, the base area has two opposite rectilinear sections, each connected to one another via a (circular) arc are. Alternatively, the base area can also be circular. The lateral surface 18 is therefore designed in particular in the manner of a conical lateral surface.

Zudem weist der Stecker 2 ein Steckergehäuse 6 auf. Das Steckergehäuse 6 ist vorzugsweise ein Kunststoffgehäuse und weist auf seinem rückseitigen, zur Mantelleitung 4 gerichteten Ende eine Aufnahme 22 auf, die zur Aufnahme des Dichtelements 16 ausgebildet ist. Speziell weist diese Aufnahme 22 ebenfalls eine konische Ausgestaltung komplementär zum Dichtelement 16 auf.In addition, the plug 2 has a plug housing 6. The plug housing 6 is preferably a plastic housing and has a receptacle 22 on its rear end facing the sheathed cable 4, which is designed to receive the sealing element 16. In particular, this receptacle 22 also has a conical design complementary to the sealing element 16.

Wie weiterhin anhand der Fig. 1 zu erkennen ist, weist das Steckergehäuse 6 im Bereich der Aufnahme 22 an seiner Außenwandung 21 Stege 24 oder Rippen auf. Die Stege 24 sind umlaufend ausgebildet, wobei im Ausführungsbeispiel ein mittlerer Steg 24 unterbrochen ist. Durch die Stege 24 ist eine formschlüssige Verbindung mit einer Ummantelung 8 (vgl. Fig. 3) ausgebildet, die in und entgegen der Längsrichtung 20 wirksam ist. Ergänzend ist durch die Unterbrechung des mittleren Stegs 24 auch eine in Umfangsrichtung wirksame formschlüssige Verbindung ausgebildet.How to continue based on the Fig. 1 can be seen, the plug housing 6 has webs 24 or ribs on its outer wall 21 in the area of the receptacle 22. The webs 24 are designed all around, with a central web 24 being interrupted in the exemplary embodiment. The webs 24 create a positive connection with a casing 8 (cf. Fig. 3 ) is formed, which is effective in and against the longitudinal direction 20. In addition, the interruption of the middle web 24 also creates a positive connection that is effective in the circumferential direction.

In Längsrichtung 20 zum vorderen Ende betrachtet, werden die Stege 24 von einem umlaufenden Kragen 26 begrenzt. Auf diesem rückwärtigen Bereich mit den umlaufenden Stegen 24 bis zum Kragen 26 wird - wie anhand der Fig. 3 zu erkennen ist - eine aufgespritzte oder aufgegossene Ummantelung 8 aufgebracht, die sich bis zum Leitungsmantel 12 der Mantelleitung erstreckt und somit eine zuverlässige und sichere Abdichtung gewährleistet.Viewed in the longitudinal direction 20 towards the front end, the webs 24 are delimited by a circumferential collar 26. On this rear area with the surrounding webs 24 up to the collar 26 - as shown in the Fig. 3 can be seen - a sprayed or cast-on sheath 8 is applied, which extends to the cable jacket 12 of the sheathed cable and thus ensures a reliable and secure seal.

In Fig. 2 ist der Stecker 2 in einem zwischen konfektionierten Zustand gezeigt. Hierzu wurden die mit den Kontaktelementen 14 versehenen Adern 10 in das Steckergehäuse 6 eingebracht. Das auf die Adern 10 aufgeschobene Dichtelement 16 ist hierbei in der Aufnahme 22 des Steckergehäuses 6, vorzugsweise formschlüssig angeordnet.In Fig. 2 the plug 2 is shown in an assembled state. For this purpose, the wires 10 provided with the contact elements 14 were inserted into the plug housing 6. The sealing element 16 pushed onto the wires 10 is arranged in the receptacle 22 of the plug housing 6, preferably in a form-fitting manner.

In Fig. 3 ist der endgefertigte Stecker 2 mit der angeschlagenen Mantelleitung 4 dargestellt. Der Stecker 2 weist dabei das Steckergehäuse 6 sowie eine aufgespritzte Ummantelung 8 auf, die den Bereich, in den die Mantelleitung 4 in das Steckergehäuse 6 eingeführt ist, umschließt. Die Ummantelung 8 reicht bis zu dem Kragen 26 und liegt an diesem stirnseitig an. Sie wird aufgegossen oder aufgespritzt und ist massiv ausgebildet. Durch den beim Aufbringen erzeugten Druck wird das Dichtelement 16 in Längsrichtung 20 in die Aufnahme 22 eingedrückt, so dass die Dichtungswirkung verbessert wird.In Fig. 3 the finished plug 2 is shown with the attached sheathed cable 4. The plug 2 has the plug housing 6 and a sprayed-on casing 8, which encloses the area into which the sheathed cable 4 is inserted into the plug housing 6. The casing 8 extends to the collar 26 and lies against the front side of it. It is poured or sprayed on and is solid. Due to the pressure generated during application, the sealing element 16 is pressed into the receptacle 22 in the longitudinal direction 20, so that the sealing effect is improved.

BezugszeichenlisteReference symbol list

22
SteckerPlug
44
MantelleitungSheathed cable
66
SteckergehäuseConnector housing
88th
UmmantelungSheathing
1010
AderVein
1212
Leitungsmantelcable jacket
1414
KontaktelementContact element
1616
DichtelementSealing element
1818
MantelflächeLateral surface
2020
LängsrichtungLongitudinal direction
2121
Außenwandungouter wall
2222
AufnahmeRecording
2424
StegeBridges
2626
Kragencollar

Claims (7)

  1. Method of assembling an electrical connector (2) to a multi-core sheathed cable (4) extending in a longitudinal direction (20) and comprising a plurality of cores (10) surrounded by a cable sheath (12), wherein
    - a sealing element (16) of a sealing material is applied to the plurality of cores (10), wherein the sealing element (16) is a solid, integral and non-slitted component and comprises a single feedthrough (17) through the sealing material for each of the cores (10), wherein
    - the sealing element (16) is pushed onto the plurality of cores (10),
    - subsequently a contact element (14) is connected at the end to the respective cores (10),
    - subsequently the cores (10) are mounted in a connector housing (6), the connector housing (6) having a receptacle (22) at its rear end and the sealing element (16) being pushed into the receptacle (22) and being displaced along the cores (10) for this purpose, so that the sealing element (16) lies in the receptacle (22) in a sealing manner,
    - a sealing sheath (8) is applied, which extends from the rear end of the connector housing (6) to the cable sheath (12), wherein
    - the sealing element is manufactured in such a way that the sealing element (16) tapers conically in the longitudinal direction,
    - the receptacle is manufactured in such a way that the receptacle (22) has a conical design complementary to the sealing element (16),
    - the sealing element is manufactured in such a way that the sealing element (16) is softer than the connector housing (6),
    - the sealing element is manufactured from a thermoplastic polyurethane material.
  2. Method according to claim 1, in which the sheath (8) is applied by injection moulding.
  3. Method according to any one of the preceding claims, in which, when the sheath (8) is applied by injection moulding, a pressing-in force directed in the longitudinal direction (20) is exerted on the sealing element (16) so that the latter is pressed into the receptacle (22).
  4. Electrical connector (2) manufactured by a method according to any one of the preceding claims, having connected thereto a multi-core sheathed cable (4) extending in a longitudinal direction (20) and having a plurality of cores (10) surrounded by a cable sheath (12), comprising
    - a connector housing (6), which has a receptacle (22) at its rear end, through which the cores (10) are inserted into the connector housing (6),
    - contact elements (14), which are attached at the end to a respective core (10) and which are arranged in the connector housing (6),
    - a sealing sheath (6) which extends from the rear end of the connector housing (6) to the cable sheath (12), characterized in that an integral and non-slitted sealing element (16) made of a sealing material is inserted in the receptacle (22), the cores (10) being passed individually through the sealing material, wherein
    - the sealing element (16) tapers conically in the longitudinal direction,
    - the receptacle (22) has a conical configuration complementary to the sealing element (16), characterized in that
    - the sealing element (16) is softer than the connector housing (6) and in that
    - the sealing element (16) is made of a thermoplastic polyurethane material, TPU.
  5. Connector (2) according to claim 4, wherein the sealing element (16) has a sheath surface (18) which is oriented circumferentially at an acute angle to the longitudinal direction (20), the entire sheath surface (18) of the sealing element (16) preferably being smooth and, in particular, without circumferential ribs or grooves.
  6. Connector (2) according to any one of claims 4 to 5, wherein the sheath (8) is formed as a cast or injection-moulded component and bears against the sealing element (16) and exerts a force component thereon in the longitudinal direction (20).
  7. Connector (2) according to any one of claims 4 to 6, which is a two-core sheathed cable (4) with two cores (10).
EP18727686.0A 2017-05-08 2018-05-08 Method for assembling a plug on a multi-core sheathed cable, and electrical plug Active EP3622588B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017207734 2017-05-08
PCT/EP2018/061919 WO2018206601A1 (en) 2017-05-08 2018-05-08 Method for assembling a plug on a multi-core sheathed cable, and electrical plug

Publications (3)

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EP3622588A1 EP3622588A1 (en) 2020-03-18
EP3622588C0 EP3622588C0 (en) 2023-11-29
EP3622588B1 true EP3622588B1 (en) 2023-11-29

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US (1) US11309656B2 (en)
EP (1) EP3622588B1 (en)
CN (1) CN110603692A (en)
WO (1) WO2018206601A1 (en)

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Also Published As

Publication number Publication date
WO2018206601A1 (en) 2018-11-15
CN110603692A (en) 2019-12-20
US20210143572A1 (en) 2021-05-13
EP3622588C0 (en) 2023-11-29
EP3622588A1 (en) 2020-03-18
US11309656B2 (en) 2022-04-19

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