EP1408587A1 - Contact connector - Google Patents

Contact connector Download PDF

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Publication number
EP1408587A1
EP1408587A1 EP03018976A EP03018976A EP1408587A1 EP 1408587 A1 EP1408587 A1 EP 1408587A1 EP 03018976 A EP03018976 A EP 03018976A EP 03018976 A EP03018976 A EP 03018976A EP 1408587 A1 EP1408587 A1 EP 1408587A1
Authority
EP
European Patent Office
Prior art keywords
contact elements
contact
base
injection molding
plastic
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.)
Withdrawn
Application number
EP03018976A
Other languages
German (de)
French (fr)
Inventor
Thorsten Lau
Arnulf Maag
Edgar Stolz
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.)
Elco Europe GmbH
Original Assignee
Elco Europe 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
Application filed by Elco Europe GmbH filed Critical Elco Europe GmbH
Publication of EP1408587A1 publication Critical patent/EP1408587A1/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • 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
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • 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

Definitions

  • the invention relates to a contact plug, which is produced in an injection molding Housing in a side-by-side arrangement numerous over one Partial length fixed in a housing base by overmolding with plastic Contact elements, such as pins or the like, has.
  • the contact elements are each in a row or in several to each other parallel rows of base bodies held.
  • the contacts are produced directly in the injection mold molded. It has been shown that the contact plug thus produced are not sufficiently tight, for example when using them in motor vehicles is extremely problematic because moisture on the sensitive electronics can reach, as with contact plugs arranged in the engine compartment.
  • a contact plug that met the tightness requirements could also be used cannot be achieved if the contact elements adding an adhesion of the plastic-improving primer were encapsulated. That's why it is known, the contact elements with a larger compared to the hole holder Provide dimension and the contact elements consequently with a self-sealing Effect allowing excess to press into the housing base, but what does not work with frequently used rectangular contacts.
  • the invention is therefore based on the object of a generic contact plug to create the same unchanged with the injection molding overmoulded contact elements is produced, but a high level of tightness ensured.
  • each contact element overmolded with small-volume base extensions arranged with air is.
  • the contact elements according to the invention no longer in a uniform overmolded area, i.e. a housing base common to all contact elements with a correspondingly large plastic mass, but only of circumferentially spaced apart with air or free all around If the base extensions are overmoulded, the plastic shrinks when it cools down on the contact elements no longer away from them, which leads to leaks or Permeability would lead, but the only small amount of plastic deliberately shrinks towards the respective contact element. Let her through As has been established by tests, tightness can be achieved without further an inflowing amount of water of z. B. withstand 0.5 l / h because the small mass of the plastic aligned with shrinkage on the contact elements an intimate connection with great tightness.
  • An embodiment of the invention provides that the contact elements in the area the base extensions are designed with cross-sectional changes.
  • the changed Geometry, i.e. the cross-sectional changes such as notches or laces, Holes or the like of the contact elements in the sealing areas The base extensions support the shrinkage freely on the contact elements runs and also forms a kind of labyrinth, which for example the water resistance still favors.
  • FIG. 1 shows in a longitudinal section only a partial view of a contact plug 1. This is in the embodiment in its housing 2, if necessary divided by walls into several chambers with numerous contact elements 3 as well as 4 and 5, which are of different geometry or Configuration and also a different length - not shown here - their ends protruding freely upwards from the housing base 6.
  • the targeted shrinkage behavior of the small mass of plastic for the pedicle extensions 8 leads to an intimate connection with the contact elements 3 to 5 and thus causes a high tightness of the contact plug 1, so that none Moisture or water can penetrate into the interior with electronics.

Abstract

The connector has contact elements (3,4,5) such as pins, arranged side by side in an injection-molded housing and fixed over a portion of their length inside a base (6) by injection molding. Small-volume base extensions (8), with air gaps (7) between them, are molded around each contact element.

Description

Die Erfindung betrifft einen Kontaktstecker, der in einem durch Spritzgießen hergestellten Gehäuse in nebeneinander liegender Anordnung zahlreiche über eine Teillänge in einem Gehäusesockel durch Umspritzen mit Kunststoff festgelegte Kontaktelemente, wie Stifte oder dergleichen, aufweist.The invention relates to a contact plug, which is produced in an injection molding Housing in a side-by-side arrangement numerous over one Partial length fixed in a housing base by overmolding with plastic Contact elements, such as pins or the like, has.

Bei solchen elektrischen Kontaktsteckern, z. B. auch bestehend aus zwei komplementären Steckteilen, von denen das eine Steckteil mit Federkontakten als Federleiste und das andere Steckteil mit Messerkontakten als Messerleiste ausgebildet ist, sind die Kontaktelemente jeweils in einer Reihe oder in mehreren zueinander parallelen Reihen von Sockelkörpern gehalten. Bei der spritzgießtechnischen Herstellung eines Kontaktsteckers werden die Kontakte direkt im Spritzgießwerkzeug umspritzt. Hierbei hat sich gezeigt, daß die so hergestellten Kontaktstecker nicht ausreichend dicht sind, was beispielsweise bei deren Verwendung in Kraftfahrzeugen äußerst problematisch ist, da Feuchtigkeit an die empfindliche Elektronik gelangen kann, wie bei im Motorraum angeordneten Kontaktsteckern.In such electrical contact plugs, for. B. also consisting of two complementary Plug-in parts, one of which is a plug-in part with spring contacts as a female connector and the other plug part with knife contacts designed as a knife strip is, the contact elements are each in a row or in several to each other parallel rows of base bodies held. With the injection molding The contacts are produced directly in the injection mold molded. It has been shown that the contact plug thus produced are not sufficiently tight, for example when using them in motor vehicles is extremely problematic because moisture on the sensitive electronics can reach, as with contact plugs arranged in the engine compartment.

Ein den Dichtheitsanforderungen genügender Kontaktstecker konnte auch dann nicht erreicht werden, wenn die Kontaktelemente Unter Zugabe eines die Haftung des Kunststoffs verbessernden Primers umspritzt wurden. Es ist deshalb auch bekannt, die Kontaktelemente mit einem gegenüber der Lochaufnahme größerem Maß vorzusehen und die Kontaktelemente folglich mit einem eine selbstdichtende Wirkung ermöglichenden Übermaß in den Gehäusesockel einzupressen, was jedoch bei häufig eingesetzten rechteckigen Kontakten nicht funktioniert. A contact plug that met the tightness requirements could also be used cannot be achieved if the contact elements adding an adhesion of the plastic-improving primer were encapsulated. That's why it is known, the contact elements with a larger compared to the hole holder Provide dimension and the contact elements consequently with a self-sealing Effect allowing excess to press into the housing base, but what does not work with frequently used rectangular contacts.

Der Erfindung liegt daher die Aufgabe zugrunde, einen gattungsgemäßen Kontaktstecker zu schaffen, der in einfacher Weise unverändert mit beim Spritzgießen umspritzten Kontaktelementen hergestellt wird, dabei aber eine hohe Dichtheit gewahrleistet.The invention is therefore based on the object of a generic contact plug to create the same unchanged with the injection molding overmoulded contact elements is produced, but a high level of tightness ensured.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß jedes Kontaktelement mit kleinvolumigen, zueinander mit Luft angeordneten Sockelfortsätzen umspritzt ist. Indem die Kontaktelemente erfindungsgemäß nicht mehr in einem einheitlichen umspritzten Bereich, d.h. einem allen Kontaktelementen gemeinsamen Gehäusesockel mit entsprechend großer Kunststoffmasse, sondern lediglich noch von umlaufend mit Luft zueinander beabstandeten bzw. rundum freibleibend ausgebildeten Sockelfortsätzen umspritzt sind, schwindet der Kunststoff beim Erkalten auf den Kontaktelementen nicht mehr von diesen weg, was zu Undichtheiten bzw. Durchlässigkeiten führen würde, sondern die nur noch kleine Masse an Kunststoff schwindet gezielt in Richtung zum jeweiligen Kontaktelement hin. Hierdurch lassen sich, wie durch Versuche festgestellt wurde, Dichtheiten erreichen, die ohne weiteres einer zuströmenden Wassermenge von z. B. 0,5 l/h standhalten, weil die kleine Masse des mit Schwindung auf die Kontaktelemente ausgerichteten Kunststoffs eine innige Verbindung mit großer Dichtheit bewirkt.This object is achieved in that each contact element overmolded with small-volume base extensions arranged with air is. By the contact elements according to the invention no longer in a uniform overmolded area, i.e. a housing base common to all contact elements with a correspondingly large plastic mass, but only of circumferentially spaced apart with air or free all around If the base extensions are overmoulded, the plastic shrinks when it cools down on the contact elements no longer away from them, which leads to leaks or Permeability would lead, but the only small amount of plastic deliberately shrinks towards the respective contact element. Let her through As has been established by tests, tightness can be achieved without further an inflowing amount of water of z. B. withstand 0.5 l / h because the small mass of the plastic aligned with shrinkage on the contact elements an intimate connection with great tightness.

Eine Ausgestaltung der Erfindung sieht vor, daß die Kontaktelemente im Bereich der Sockelfortsätze mit Querschnittsänderungen ausgebildet sind. Die veränderte Geometrie, d.h. die Querschnittsänderungen wie Einkerbungen bzw. -schnürungen, Löcher oder dergleichen der Kontaktelemente in den Abdichtbereichen der Sockelfortsätze unterstützt, daß die Schwindung frei auf die Kontaktelemente hin verläuft und sich außerdem eine Art Labyrinth ausbildet, was beispielsweise die Wasserdichtheit noch begünstigt. An embodiment of the invention provides that the contact elements in the area the base extensions are designed with cross-sectional changes. The changed Geometry, i.e. the cross-sectional changes such as notches or laces, Holes or the like of the contact elements in the sealing areas The base extensions support the shrinkage freely on the contact elements runs and also forms a kind of labyrinth, which for example the water resistance still favors.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus den Ansprüchen und der nachfolgenden Beschreibung eines in der einzigen Zeichnungsfigur schematisch dargestellten Ausführungsbeispiels des Gegenstandes der Erfindung.Further details and advantages of the invention emerge from the claims and the following description of one in the single drawing figure schematically illustrated embodiment of the object of the invention.

Die Figur 1 zeigt in einem Längsschnitt lediglich eine Teilansicht eines Kontaktsteckers 1. Dieser ist im Ausführungsbeispiel in seinem Gehäuse 2, gegebenenfalls durch Wände unterteilt in mehrere Kammern, mit zahlreichen Kontaktelementen 3 sowie 4 und 5 bestückt, die hier von unterschiedlicher Geometrie bzw. Konfiguration sind und auch eine unterschiedliche Länge - hier nicht dargestellt - ihrer aus dem Gehäusesockel 6 frei nach oben vorragenden Enden haben können.1 shows in a longitudinal section only a partial view of a contact plug 1. This is in the embodiment in its housing 2, if necessary divided by walls into several chambers with numerous contact elements 3 as well as 4 and 5, which are of different geometry or Configuration and also a different length - not shown here - their ends protruding freely upwards from the housing base 6.

Die mit dem Spritzgießen des kompletten Kontaktsteckers 1 sogleich in dessen Gehäusesockel 6 eingebetteten Kontaktelemente 3 bis 5 sind über eine Teillänge jeweils mit Luft 7 voneinander rundum separiert mit Sockelfortsätzen nach Art eines Hosenbeins umspritzt, was durch eine im Spritzgießwerkzeug entsprechend eingearbeitete Kontur erreicht wird, in die sich die Kunststoffmasse von der nicht gezeigten Angußstelle für den kompletten Kontaktstecker 1 her verteilt. Die für die Sockelfortsätze 8 nur kleine benötigte Kunststoffmasse bewirkt, daß diese beim Erkalten auf den Kontaktelementen 3 bis 5 in Richtung auf die Kontaktelemente 3 bis 5 hin schwindet, wie durch die Pfeile 9 verdeutlicht, was eine hohe Dichtheit des Verbundes der Kunststoffmasse mit den Kontaktelementen 3 bis 5 mit sich bringt. Dieser Verlauf der Schwindung frei auf die Kontaktelemente 3 bis 5 hin wird dadurch begünstigt, daß die Kontaktelemente 3 bis 5 in dem Bereich mit Umspritzung durch die Sockelfortsätze 8 mit Querschnittsänderungen 10 ausgebildet sind.With the injection molding of the complete contact plug 1 immediately in it Housing base 6 embedded contact elements 3 to 5 are over a partial length each with air 7 separated from each other all around with base extensions in the manner of a Pants legs overmolded, which is indicated by an injection mold incorporated contour is reached, in which the plastic mass is not Distributed sprue shown for the complete contact plug 1 ago. The for the Base extensions 8 only small plastic mass required that this when Cooling on the contact elements 3 to 5 in the direction of the contact elements 3 to 5 disappears, as shown by the arrows 9, what a high tightness the composite of the plastic mass with the contact elements 3 to 5 with itself brings. This course of shrinkage is free towards the contact elements 3 to 5 thereby favored that the contact elements 3 to 5 in the area with extrusion coating are formed by the base extensions 8 with cross-sectional changes 10.

Das gezielte Schwindungsverhalten der kleinen Masse an Kunststoff für die Sokkelfortsätze 8 führt zu einer innigen Verbindung mit den Kontaktelementen 3 bis 5 und bewirkt damit eine hohe Dichtheit des Kontaktsteckers 1, so daß keine Feuchtigkeit bzw. Wasser in den Innenraum mit Elektronik dringen kann.The targeted shrinkage behavior of the small mass of plastic for the pedicle extensions 8 leads to an intimate connection with the contact elements 3 to 5 and thus causes a high tightness of the contact plug 1, so that none Moisture or water can penetrate into the interior with electronics.

Claims (2)

Kontaktstecker (1), der in einem durch Spritzgießen hergestellten Gehäuse (2) in nebeneinander liegender Anordnung zahlreiche über eine Teillänge in einem Gehäusesockel (6) durch Umspritzen mit Kunststoff festgelegte Kontaktelemente (3, 4, 5), wie Stifte oder dergleichen, aufweist,
dadurch gekennzeichnet, daß jedes Kontaktelement (3, 4, 5) mit kleinvolumigen, zueinander mit Luft (7) angeordneten Sockelfortsätzen (8) umspritzt ist.Contact plug (1) which, in a housing (2) produced by injection molding, in a juxtaposed arrangement, has numerous contact elements (3, 4, 5), such as pins or the like, which are fixed over a partial length in a housing base (6) by injection molding with plastic,
characterized in that each contact element (3, 4, 5) is extrusion-coated with small-volume base extensions (8) arranged with air (7). Kontaktstecker nach Anspruch 1,
dadurch gekennzeichnet, daß die Kontaktelemente (3, 4, 5) im Bereich der Sockelfortsätze (8) mit Querschnittsänderungen (10) ausgebildet sind.Contact plug according to claim 1,
characterized in that the contact elements (3, 4, 5) are designed with cross-sectional changes (10) in the region of the base extensions (8).
EP03018976A 2002-10-10 2003-08-21 Contact connector Withdrawn EP1408587A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10247170 2002-10-10
DE2002147170 DE10247170A1 (en) 2002-10-10 2002-10-10 contact plug

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EP1408587A1 true EP1408587A1 (en) 2004-04-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010010429A1 (en) * 2008-07-22 2010-01-28 Fci Watertight connector
WO2022175079A1 (en) * 2021-02-16 2022-08-25 Robert Bosch Gmbh Plastic component having bus bars

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770878A (en) * 1971-12-06 1973-11-06 Terminals Inc Hermetically sealed electrical terminal
GB2110587A (en) * 1981-10-30 1983-06-22 Pressac Singapore Making a non-rewirable plug
EP0727845A2 (en) * 1995-02-16 1996-08-21 Tescorp Seismic Products, Inc. Field repairable electrical connector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770878A (en) * 1971-12-06 1973-11-06 Terminals Inc Hermetically sealed electrical terminal
GB2110587A (en) * 1981-10-30 1983-06-22 Pressac Singapore Making a non-rewirable plug
EP0727845A2 (en) * 1995-02-16 1996-08-21 Tescorp Seismic Products, Inc. Field repairable electrical connector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010010429A1 (en) * 2008-07-22 2010-01-28 Fci Watertight connector
WO2022175079A1 (en) * 2021-02-16 2022-08-25 Robert Bosch Gmbh Plastic component having bus bars

Also Published As

Publication number Publication date
DE20221960U1 (en) 2009-11-12
DE10247170A1 (en) 2004-04-22

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