EP1989761B1 - Electrical plug with sealed-off metal insert parts - Google Patents

Electrical plug with sealed-off metal insert parts Download PDF

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Publication number
EP1989761B1
EP1989761B1 EP07703827A EP07703827A EP1989761B1 EP 1989761 B1 EP1989761 B1 EP 1989761B1 EP 07703827 A EP07703827 A EP 07703827A EP 07703827 A EP07703827 A EP 07703827A EP 1989761 B1 EP1989761 B1 EP 1989761B1
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EP
European Patent Office
Prior art keywords
plug
housing
metal insert
plastic
sealing
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
EP07703827A
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German (de)
French (fr)
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EP1989761A1 (en
Inventor
Thomas Moelkner
Heinz Eisenschmid
Thorsten-Kai Janitza
Ralf Kaiser
Hans-Peter Didra
Stefan Warth
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP1989761A1 publication Critical patent/EP1989761A1/en
Application granted granted Critical
Publication of EP1989761B1 publication Critical patent/EP1989761B1/en
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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
    • H01R13/46—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
    • 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
    • H01R13/5216—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts

Definitions

  • the invention relates to a plug of an electrical connector according to the preamble of claim 1.
  • the plug according to the invention with the characterizing features of claim 1 has the advantage that the critical connection between the metal inserts and the overmolded plastic is sealed reliably and effectively by simple means.
  • the sealant or adhesive is a curable gel, in particular a perfluoropolyether gel (eg. Etsu SIFEL 8070 ®, components a and B of the company. Shin-Etsu Chemical Co., Ltd., Tokyo, Japan) or a silicone gel (such as SEMICOSIL ® 9242 Fa.
  • a silicone adhesive eg DOW CORNING ® 866 adhesive of Messrs. Dow Corning GmbH, Wiesbaden.
  • gelling is an established standard methods, which is characterized by low cost and easy handling. It ensures a good connection both to the plastic and to the metal of the insert, which connection is still given under high vibration loads.
  • the plug according to the invention can be used, for example, as an electrical feedthrough in the oil region of a vehicle engine, in particular as an electrical feedthrough from the oil-free interior of a high-pressure sensor with environmental electronics sensitive to seal the oil region.
  • the plug is part of a rail pressure detecting the pressure sensor whose electrical leads are led out through the plug according to the invention to the outside.
  • plug 1 of an electrical connector comprises a connector housing 2 made of plastic and plastic injection-molded metal inserts, namely three electrical contacts (pins) 3 and a circumferential mounting flange 4.
  • the annular or sleeve-shaped mounting flange 4 is a deep-drawn part, the plastic-molded end 4a is bent inwards and its outwardly projecting flange end 4b defines an interior 5 .
  • the electrical contacts 3 enter at the side facing away from the interior 5 housing side 2a in the connector housing 2 and at the interior 5 facing the housing side 2b from the connector housing 2 in the interior 5 from.
  • the plug 1 is made by injection molding of plastic and with the contacts 3 and the mounting flange 4 as metal insert parts and then cooled.
  • the connection between the plug housing 2 and the metal insert parts 3, 4 is not tight due to the very different coefficients of thermal expansion of plastic and metal, so that e.g. Water from the outside along a gap between the connector housing 2 and the electrical contacts 3 and the mounting flange 4 in the interior 5 can pass.
  • Fig. 1 the connector housing 2 and the plastic-coated mounting flange 4 by a hardened sealant or adhesive 6 sealed against each other, which on the inside of the interior 5 facing the housing side 2b around the mounting flange 4, that is applied to the exposed inside plastic / metal interface.
  • sealant or adhesive 6 can also be applied outside the inner space 5 at the exposed outside plastic / metal interface around the attachment flange 4.
  • connector 1 Unlike in Fig. 1 are at the in Fig. 2 shown connector 1, the connector housing 2 and the plastic-coated electrical contacts 3 by the cured sealant or adhesive 6 sealed against each other, which is applied to the interior 5 facing away from the housing side 2a each around the contacts 3.
  • an inner-side sealing of the contacts 3 and a double sealing of the contacts 3, ie on both sides of the housing 2a, 2b, are also possible.
  • the cured sealant or adhesive 6 is liquid-tight and made by gelling or bonding by a moldable and curable sealant or adhesive applied to the respective housing side 2a and 2b around the contacts 3 and around the mounting flange 4 and cured , By appropriate measures in the preparation, processing and curing bubble freedom of the cured sealant or adhesive 6 is achieved. Instead, as shown, the housing side 2a, 2b cover only selectively in the region of the metal inserts 3, 4 with the sealant or adhesive 6, the housing side 2a, 2b of course also large or full surface covered with the sealant or adhesive 6 with preferably uniform layer thickness be.
  • Fig. 3 shows a rail pressure sensor 10 with a connector 1 formed as above.
  • the rail pressure sensor 10 closes with a threaded connector 11 an opening in the fuel pressure accumulator (common rail), wherein a hex nut 12 is used for screwing.
  • the plug 1 is fastened with its mounting flange 4 close to the hex nut 12, for example, welded.
  • a pressure sensor (not shown) is attached, which is connected via a measuring line 13 of the threaded connector 11 to the fuel pressure accumulator.
  • the plug 1 thus serves as a liquid-tight passage of the electrical lines of the pressure sensor from the protected against environmental influences interior 5 of the rail pressure sensor 10.
  • plug 1 are both the electrical contacts 3, as in Fig. 2 shown as well as the mounting flange 4, as in Fig. 1 shown sealed by the sealant or adhesive 6.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The plug has a plug housing (2) made of plastic, and plastic-coated electrical contacts (3) and a connecting flange (4) provided in the housing. The electrical contacts and the connecting flange lie open at housing sides (2a, 2b). The housing, the electrical contacts and the connecting flange are sealed against each other by a hardened sealing or adhesive compound (6) e.g. silicone adhesive, perfluoropolyether-gel or silicone-gel, which is provided at the housing sides around the electrical contacts and the connecting flange in an annulated manner. An independent claim is also included for sealing an electrical plug with a plug housing.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Stecker einer elektrischen Steckverbindung nach der Gattung des Patentanspruchs 1.The invention relates to a plug of an electrical connector according to the preamble of claim 1.

Durch die DE 296 22 860 U1 und die US 2005/250371 A1 ist jeweils ein elektrischer Stecker mit einem Steckergehäuse aus Kunststoff und mit mindestens einem darin vorgesehenen kunststoffumspritzten Metalleinlegeteil bekannt, das an mindestens einer Gehäuseseite freiliegt, wobei das Steckergehäuse und das Metalleinlegeteil durch eine ausgehärtete Dichtungs- uoder Klebemasse gegeneinander abgedichtet sind, welche an der mindestens einen Gehäuseseite rings um das freiliegende Metalleinlegeteil vorgesehen ist.By the DE 296 22 860 U1 and the US 2005/250371 A1 is in each case an electrical connector with a plug housing made of plastic and at least one provided therein plastic-injected metal insert known, which is exposed on at least one side of the housing, wherein the plug housing and the metal insert are sealed by a cured seal uoder adhesive against each other, which on the at least one housing side is provided around the exposed metal insert.

Das Umspritzen von Metalleinlegeteilen mit Kunststoff zur Herstellung von elektrischen Steckern ist weit verbreitet. Das Problem dabei ist die Dichtheit der Stecker an der Grenzfläche Metall zum Kunststoff, da die stoffschlüssige Verbindung zwischen Kunststoff und Metall auf Grund der sehr unterschiedlichen Wärmeausdehnungskoeffizienten des Stoffpaares sehr schlecht ist. Um dennoch die Dichtheit des Steckers zu erreichen, sind oft aufwändige Maßnahmen, wie z.B. Vorumspritzung oder zusätzliche Dichtelemente, notwendig.The encapsulation of metal inserts with plastic for the production of electrical plugs is widespread. The problem here is the tightness of the connector at the interface metal to plastic because the cohesive connection between plastic and metal is very poor due to the very different thermal expansion coefficient of the fabric pair. Nevertheless, to achieve the tightness of the plug, often expensive measures, such as pre-injection or additional sealing elements, necessary.

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße Stecker mit den kennzeichnenden Merkmalen des Patentanspruchs 1 hat demgegenüber den Vorteil, dass die kritische Verbindung zwischen den Metalleinlegeteilen und dem umspritzten Kunststoff mit einfachen Mitteln zuverlässig und wirkungsvoll abgedichtet ist. Erfindungsgemäß wird im Anschluss an den Standardprozess "Umspritzen von Metalleinlegeteilen mittels Kunststoff' durch die Dichtungs- oder Klebemasse die Dichtheit an der Kunststoff/Metall Grenzfläche erzielt. Vorzugsweise ist die Dichtungs- oder Klebemasse ein aushärtbares Gel, insbesondere ein Perfluorpolyether-Gel (z.B. Shin-Etsu SIFEL® 8070, Komponenten A und B der Fa. Shin-Etsu Chemical Co., Ltd., Tokio, Japan) oder ein Silikon-Gel (z.B. SEMICOSIL® 9242 der Fa. Wacker-Chemie, Burghausen), oder ein Klebstoff, insbesondere ein Silikon-Klebstoff (z.B. DOW CORNING® 866 Adhesive der Fa. Dow Corning GmbH, Wiesbaden). Vergelen ist ein bewährtes Standardverfahren, das sich durch geringe Kosten und einfache Handhabung auszeichnet. Es garantiert eine gute Anbindung sowohl an den Kunststoff als auch an das Metall des Einlegeteils, wobei diese Anbindung auch unter hohen Vibrationsbelastungen noch gegeben ist.The plug according to the invention with the characterizing features of claim 1 has the advantage that the critical connection between the metal inserts and the overmolded plastic is sealed reliably and effectively by simple means. According to the invention, following the standard process "encapsulation of metal insert parts by means of plastic" by the sealant or adhesive, the density at the plastic / metal interface is achieved Preferably, the sealant or adhesive is a curable gel, in particular a perfluoropolyether gel (eg. Etsu SIFEL 8070 ®, components a and B of the company. Shin-Etsu Chemical Co., Ltd., Tokyo, Japan) or a silicone gel (such as SEMICOSIL ® 9242 Fa. Wacker-Chemie, Burghausen), or an adhesive, in particular a silicone adhesive (eg DOW CORNING ® 866 adhesive of Messrs. Dow Corning GmbH, Wiesbaden). gelling is an established standard methods, which is characterized by low cost and easy handling. It ensures a good connection both to the plastic and to the metal of the insert, which connection is still given under high vibration loads.

Der erfindungsgemäße Stecker kann beispielsweise als elektrische Durchführung im Ölbereich eines Fahrzeugmotors, insbesondere als elektrische Durchführung aus dem ölfreien Innenraum eines Hochdrucksensors mit gegenüber Umwelteinflüssen sensibler Elektronik eingesetzt werden, um den Ölbereich abzudichten. Vorzugsweise ist der Stecker Teil eines den Raildruck erfassenden Drucksensors, dessen elektrische Leitungen durch den erfindungsgemäßen Stecker nach außen herausgeführt sind.The plug according to the invention can be used, for example, as an electrical feedthrough in the oil region of a vehicle engine, in particular as an electrical feedthrough from the oil-free interior of a high-pressure sensor with environmental electronics sensitive to seal the oil region. Preferably, the plug is part of a rail pressure detecting the pressure sensor whose electrical leads are led out through the plug according to the invention to the outside.

Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstands der Erfindung sind der Beschreibung, der Zeichnung und den Ansprüchen entnehmbar.Further advantages and advantageous embodiments of the subject invention are the description, the drawings and claims removed.

Zeichnungendrawings

Ausführungsbeispiele des erfindungsgemäßen Steckers sind in den Zeichnungen dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

Fig. 1
den erfindungsgemäßen Stecker mit abgedichtetem Befestigungsflansch;
Fig. 2
den erfindungsgemäßen Stecker mit abgedichteten elektrischen Kontakten; und
Fig. 3
einen Drucksensor mit dem erfindungsgemäßen Stecker, bei dem die elektrischen Kontakten und der Befestigungsflansch abgedichtet sind.
Embodiments of the connector according to the invention are in the drawings shown and explained in more detail in the following description. Show it:
Fig. 1
the plug according to the invention with sealed mounting flange;
Fig. 2
the plug according to the invention with sealed electrical contacts; and
Fig. 3
a pressure sensor with the plug according to the invention, in which the electrical contacts and the mounting flange are sealed.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Der in Fig. 1 gezeigte Stecker 1 einer elektrischen Steckverbindung umfasst ein Steckergehäuse 2 aus Kunststoff und darin kunststoffumspritzte Metalleinlegeteile, nämlich drei elektrische Kontakte (Pins) 3 und einen umlaufenden Befestigungsflansch 4. Der ring- oder hülsenförmige Befestigungsflansch 4 ist ein Tiefziehteil, dessen kunststoffumspritztes Ende 4a nach innen umgebogen ist und dessen nach außen vorstehendes Flanschende 4b einen Innenraum 5 definiert. Die elektrischen Kontakte 3 treten an der dem Innenraum 5 abgewandten Gehäuseseite 2a in das Steckergehäuse 2 ein und an der dem Innenraum 5 zugewandten Gehäuseseite 2b aus dem Steckergehäuse 2 in den Innenraum 5 aus.The in Fig. 1 shown plug 1 of an electrical connector comprises a connector housing 2 made of plastic and plastic injection-molded metal inserts, namely three electrical contacts (pins) 3 and a circumferential mounting flange 4. The annular or sleeve-shaped mounting flange 4 is a deep-drawn part, the plastic-molded end 4a is bent inwards and its outwardly projecting flange end 4b defines an interior 5 . The electrical contacts 3 enter at the side facing away from the interior 5 housing side 2a in the connector housing 2 and at the interior 5 facing the housing side 2b from the connector housing 2 in the interior 5 from.

Der Stecker 1 ist im Spritzgussverfahren aus Kunststoff und mit den Kontakten 3 und dem Befestigungsflansch 4 als Metalleinlegeteilen hergestellt und anschließend abgekühlt. Allerdings ist die Verbindung zwischen dem Steckergehäuse 2 und den Metalleinlegeteilen 3, 4 auf Grund der sehr unterschiedlichen Wärmeausdehnungskoeffizienten von Kunststoff und Metall nicht dicht, so dass z.B. Wasser von außen entlang eines Spaltes zwischen dem Steckergehäuse 2 und den elektrischen Kontakten 3 bzw. dem Befestigungsflansch 4 in den Innenraum 5 gelangen kann.The plug 1 is made by injection molding of plastic and with the contacts 3 and the mounting flange 4 as metal insert parts and then cooled. However, the connection between the plug housing 2 and the metal insert parts 3, 4 is not tight due to the very different coefficients of thermal expansion of plastic and metal, so that e.g. Water from the outside along a gap between the connector housing 2 and the electrical contacts 3 and the mounting flange 4 in the interior 5 can pass.

Um dennoch die Dichtheit des Steckers 1 zu erreichen, sind in Fig. 1 das Steckergehäuse 2 und der kunststoffumspritzte Befestigungsflansch 4 durch eine ausgehärtete Dichtungs- oder Klebemasse 6 gegeneinander abgedichtet, welche innenraumseitig auf der dem Innenraum 5 zugewandten Gehäuseseite 2b rings um den Befestigungsflansch 4, d.h. an der freiliegenden innenseitigen Kunststoff/Metall-Grenzfläche, aufgebracht ist. Obwohl nicht gezeigt, kann selbstverständlich die Dichtungs- oder Klebemasse 6 auch außerhalb des Innenraums 5 an der freiliegenden außenseitigen Kunststoff/Metall-Grenzfläche rings um den Befestigungsflansch 4 aufgebracht sein.Nevertheless, to achieve the tightness of the plug 1, are in Fig. 1 the connector housing 2 and the plastic-coated mounting flange 4 by a hardened sealant or adhesive 6 sealed against each other, which on the inside of the interior 5 facing the housing side 2b around the mounting flange 4, that is applied to the exposed inside plastic / metal interface. Although not shown, it goes without saying that the sealant or adhesive 6 can also be applied outside the inner space 5 at the exposed outside plastic / metal interface around the attachment flange 4.

Anders als in Fig. 1 sind bei dem in Fig. 2 gezeigten Stecker 1 das Steckergehäuse 2 und die kunststoffumspritzten elektrischen Kontakten 3 durch die ausgehärtete Dichtungs- oder Klebemasse 6 gegeneinander abgedichtet, welche auf der dem Innenraum 5 abgewandten Gehäuseseite 2a jeweils rings um die Kontakte 3 aufgebracht ist. Obwohl nicht gezeigt, sind selbstverständlich auch eine innenraumseitige Abdichtung der Kontakte 3 sowie eine zweifache Abdichtung der Kontakte 3, d.h. an beiden Gehäuseseiten 2a, 2b, möglich.Unlike in Fig. 1 are at the in Fig. 2 shown connector 1, the connector housing 2 and the plastic-coated electrical contacts 3 by the cured sealant or adhesive 6 sealed against each other, which is applied to the interior 5 facing away from the housing side 2a each around the contacts 3. Although not shown, it goes without saying that an inner-side sealing of the contacts 3 and a double sealing of the contacts 3, ie on both sides of the housing 2a, 2b, are also possible.

Die ausgehärtete Dichtungs- oder Klebemasse 6 ist flüssigkeitsdicht und durch Vergelen oder Verkleben hergestellt, indem eine form- und aushärtbare Dichtungs-oder Klebemasse auf die jeweilige Gehäuseseite 2a bzw. 2b rings um die Kontakte 3 bzw. rings um den Befestigungsflansch 4 aufgetragen und ausgehärtet wird. Durch geeignete Maßnahmen bei der Präparation, Verarbeitung und Aushärtung wird Blasenfreiheit der ausgehärteten Dichtungs- oder Klebemasse 6 erreicht. Statt wie gezeigt die Gehäuseseite 2a, 2b nur punktuell im Bereich der Metalleinlegeteile 3, 4 mit der Dichtungs- oder Klebemasse 6 abzudecken, kann die Gehäuseseite 2a, 2b selbstverständlich auch groß- oder vollflächig mit der Dichtungs- oder Klebemasse 6 mit bevorzugt gleichmäßiger Schichtdicke abgedeckt sein.The cured sealant or adhesive 6 is liquid-tight and made by gelling or bonding by a moldable and curable sealant or adhesive applied to the respective housing side 2a and 2b around the contacts 3 and around the mounting flange 4 and cured , By appropriate measures in the preparation, processing and curing bubble freedom of the cured sealant or adhesive 6 is achieved. Instead, as shown, the housing side 2a, 2b cover only selectively in the region of the metal inserts 3, 4 with the sealant or adhesive 6, the housing side 2a, 2b of course also large or full surface covered with the sealant or adhesive 6 with preferably uniform layer thickness be.

Fig. 3 zeigt einen Raildrucksensor 10 mit einem wie oben ausgebildeten Stecker 1. Der Raildrucksensor 10 verschließt mit einem Gewindestutzen 11 eine Öffnung im Kraftstoffdruckspeicher (Common Rail), wobei eine Sechskantmutter 12 zum Einschrauben dient. Der Stecker 1 ist mit seinem Befestigungsflansch 4 dicht an der Sechskantmutter 12 befestigt, z.B. angeschweißt. Im Innenraum 5 ist ein Druckaufnehmer (nicht gezeigt) angebracht, der über eine Messleitung 13 des Gewindestutzens 11 an den Kraftstoffdruckspeicher angeschlossen ist. Der Stecker 1 dient somit als flüssigkeitsdichte Durchführung der elektrischen Leitungen des Druckaufnehmers aus dem gegen Umwelteinflüsse geschützten Innenraum 5 des Raildrucksensors 10. Bei dem in Fig. 3 gezeigten Stecker 1 sind sowohl die elektrischen Kontakte 3, wie in Fig. 2 gezeigt, als auch der Befestigungsflansch 4, wie in Fig. 1 gezeigt, durch die Dichtungs- oder Klebemasse 6 abgedichtet. Fig. 3 shows a rail pressure sensor 10 with a connector 1 formed as above. The rail pressure sensor 10 closes with a threaded connector 11 an opening in the fuel pressure accumulator (common rail), wherein a hex nut 12 is used for screwing. The plug 1 is fastened with its mounting flange 4 close to the hex nut 12, for example, welded. In the interior 5, a pressure sensor (not shown) is attached, which is connected via a measuring line 13 of the threaded connector 11 to the fuel pressure accumulator. The plug 1 thus serves as a liquid-tight passage of the electrical lines of the pressure sensor from the protected against environmental influences interior 5 of the rail pressure sensor 10. In the in Fig. 3 shown plug 1 are both the electrical contacts 3, as in Fig. 2 shown as well as the mounting flange 4, as in Fig. 1 shown sealed by the sealant or adhesive 6.

Claims (7)

  1. Electrical plug (1) comprising a plastic plug housing (2) and comprising at least one plastic-encapsulated metal insert part (3, 4) which is provided in said housing and is exposed on at least one housing side (2a, 2b), wherein the plug housing (2) and the metal insert part (3, 4) are sealed off from one another by a cured sealing or adhesive compound (6) provided on the at least one housing side (2a, 2b) annularly around the exposed metal insert part (3, 4), characterized in that the sealing or adhesive compound (6) is a curable gel, in particular a perfluoropolyether gel or a silicone gel.
  2. Plug according to Claim 1, characterized in that the metal insert part (3) is exposed on two sides (2a, 2b) of the housing.
  3. Plug according to Claim 1 or 2, characterized in that the metal insert part is an electrical contact (3) or a securing flange (4) of the plug (1).
  4. Plug according to one of the preceding claims, characterized in that the cured sealing or adhesive compound (6) is fluid-tight and preferably also gas-tight.
  5. Plug according to one of the preceding claims, characterized in that the whole surface area of the at least one housing side (2a, 2b) is covered with the sealing or adhesive compound (6).
  6. Rail-pressure sensor (10) comprising a plug (1) according to one of the preceding claims.
  7. Process for sealing off an electrical plug (1) comprising a plastic plug housing (2) and comprising at least one plastic-encapsulated metal insert part (3) which is provided in said housing and is exposed on at least one housing side (2a, 2b), wherein a curable sealing or adhesive compound (6) is applied to the at least one housing side (2a, 2b) annularly around the exposed metal insert part (3) and is cured, characterized in that the sealing or adhesive compound (6) is a curable gel, in particular a perfluoropolyether gel or a silicone gel.
EP07703827A 2006-02-21 2007-01-12 Electrical plug with sealed-off metal insert parts Active EP1989761B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006007989A DE102006007989A1 (en) 2006-02-21 2006-02-21 Electrical plug for use in e.g. rail pressure sensor, has housing, electrical contacts and connecting flange, which are sealed against each other by sealing or adhesive compound provided at housing sides around contacts and flange
PCT/EP2007/050286 WO2007096207A1 (en) 2006-02-21 2007-01-12 Electrical plug with sealed-off metal insert parts

Publications (2)

Publication Number Publication Date
EP1989761A1 EP1989761A1 (en) 2008-11-12
EP1989761B1 true EP1989761B1 (en) 2009-07-29

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EP07703827A Active EP1989761B1 (en) 2006-02-21 2007-01-12 Electrical plug with sealed-off metal insert parts

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US (1) US20100255723A1 (en)
EP (1) EP1989761B1 (en)
CN (1) CN101390259B (en)
AT (1) ATE438214T1 (en)
DE (2) DE102006007989A1 (en)
WO (1) WO2007096207A1 (en)

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Also Published As

Publication number Publication date
CN101390259B (en) 2012-04-18
US20100255723A1 (en) 2010-10-07
EP1989761A1 (en) 2008-11-12
CN101390259A (en) 2009-03-18
WO2007096207A1 (en) 2007-08-30
DE102006007989A1 (en) 2007-08-30
ATE438214T1 (en) 2009-08-15
DE502007001188D1 (en) 2009-09-10

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