EP3382825B1 - Sealing for coasting a welded joint between receptacle contacts and stamped grid - Google Patents

Sealing for coasting a welded joint between receptacle contacts and stamped grid Download PDF

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Publication number
EP3382825B1
EP3382825B1 EP18165144.9A EP18165144A EP3382825B1 EP 3382825 B1 EP3382825 B1 EP 3382825B1 EP 18165144 A EP18165144 A EP 18165144A EP 3382825 B1 EP3382825 B1 EP 3382825B1
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EP
European Patent Office
Prior art keywords
contact
connector
plug
partner
metal component
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EP18165144.9A
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German (de)
French (fr)
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EP3382825A1 (en
Inventor
Manuel Linseder
Fabian Hirschauer
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Hirschmann Automotive GmbH
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Hirschmann Automotive GmbH
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Publication of EP3382825A1 publication Critical patent/EP3382825A1/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
    • H01R13/40—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
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • 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 connector with a contact carrier, the contact carrier having at least one contact chamber into which a contact partner arranged at one end of an electrical conductor and electrically conductively connected to it in the area of a contact point is inserted, and the end area of the connector from which the electrical conductor emerges from the contact carrier, is provided with an encapsulation, the contact carrier having a free area for receiving a shaping tool for producing the encapsulation, according to the features of the preamble of claim 1.
  • a contact carrier which has at least one contact chamber.
  • a contact partner is inserted into the contact chamber.
  • the contact partner is connected to a stranded conductor via a crimp connection.
  • a foil conductor can also be used.
  • the contact carrier has insertion openings which are located in the area of the crimp connection after the contact partner has been inserted into its contact chamber. These insertion openings are used to carry out a geometry of an injection molding tool through this up in the direction of the crimp connection and to bring it into contact there.
  • the invention is based on the object of improving a connector of this type.
  • the electrical conductor is a hard metal component and the electrical connection between the contact partner and the hard metal component is a welded or soldered connection.
  • the invention provides for this seal to be implemented on a welded or soldered connection instead of the wire crimp.
  • the stranded conductor used in the prior art cannot be connected to the contact partner via a weld connection, so that this is only possible through the hard metal component. The same applies to the solder connection.
  • the welded or soldered connection between the hard metal component and the contact partner also realizes a reproducible geometry in the area of the Contact point, so that the area of a one-part or multi-part injection molding tool that comes to rest at the contact point can be precisely matched to this geometry, especially in the series production of connectors with contact carriers including their encapsulation. It is fundamentally important that the geometry in the area in which the injection molding tool comes into contact has a defined and reproducible design, since in turn the geometry of the injection molding tool must be adapted to this defined and reproducible design in order to prevent leaks during the injection molding process avoid.
  • both the contact partner consists of a hard, that is to say inflexible material, and the electrical conductor to which the contact partner is connected.
  • the insertion openings also referred to as free area
  • the contact carrier exactly at that point in which the crimped connection between the contact partner and the stranded conductor is also located.
  • this can also be the case, but does not have to be.
  • a development of the invention provides that the contact point is located in the free area.
  • an end of the contact partner facing away from a plug-in area for a mating contact partner is flattened.
  • the contact carrier can also be made flat, but a flat contact point between the contact partner and the hard metal component can also be realized by means of a welded or soldered connection.
  • the flattened end of the contact partner has a rectangular cross section which corresponds to a rectangular cross section of the hard metal component in the area in which it is connected to the contact partner.
  • the hard metal component is a stamped grid.
  • a stamped grid can preferably be used instead of stranded conductors or foil conductors when the stability of the electrical conductor and / or the transmission of high energy densities is required.
  • the connector 1 has a contact carrier 2, which is initially produced independently. The production can take place, for example, in a plastic injection molding process.
  • the contact carrier 2 also has an extrusion coating 3.
  • the extrusion coating 3 is located on the end facing away from the plug face of the connector 1, from which at least one electrical conductor is led out.
  • the contact carrier 2 has at least one contact chamber, often more than one contact chamber, a contact partner 4 being inserted in each contact chamber.
  • the contact partner 4 is arranged at the end of the electrical conductor.
  • the contact carrier 2 is shown has a free area 5.
  • the free area 5 is preferably continuous and is only interrupted by the contact partner 2 or the electrical conductor when the contact partner 2 is inserted in its contact chamber in the contact carrier 2. But it can also be designed in the form of a recess.
  • the contact partner 2 is connected to the electrical conductor via a contact point 6.
  • the electrical conductor is a hard metal component 7, in particular an end region of a lead frame not shown in detail. In the area of the contact point 6, this end area of the hard metal component 7 is arranged with the contact partner 4 via a welded or soldered connection and electrically contacted. If connectors 1 are produced in series, care must be taken that the geometry, that is to say the external design of the contact point 6, is defined and reproducible for each contact partner 4 that is arranged at the end of such component 7.
  • the arrangement of the contact point 6 in the free area 5 is particularly good in the sectional views according to FIG Figures 2 , 4 and 5 recognizable, it can also be seen that the free area 5 also remains free after the formation of the encapsulation 3, since the injection molding tool or the end areas of a multi-part injection molding tool have been led out of this free area 5. It can also be seen very clearly that not only the end area of the contact carrier 2 modified from the plug face of the connector 1 has been encapsulated, but also a partial area of the hard metal component 7, which is inserted into the contact carrier 2 from the outside together with the already arranged contact partner 4 was (before the overmolding).
  • the connector 1 according to the invention is therefore produced as follows: the contact carrier 2 is first produced, for example made of plastic in an injection molding process.
  • the hard metal component 7 is provided, as is the contact partner 4.
  • the contact partner 4 is electrically connected to the associated end of the hard metal component 7 via a soldered or welded connection and is thus firmly arranged, resulting in a precisely defined and reproducible geometry of the contact point 6.
  • This unit from the end of the hard metal component 7 arranged contact partner 4 is inserted into the contact carrier 2 from the side facing away from the plug face of the connector 1. The introduction of this unit from the direction of the mating face is also alternatively conceivable.
  • this structural unit is inserted into an injection molding tool.
  • a part of the injection molding tool moves into the free area 5 and comes to rest at the contact point 6.
  • the inner area of the injection molding tool is then filled with injection molding material, as a result of which the shape of the encapsulation 3 shown as an example is formed.
  • the injection molding tool is removed and the finished connector 1 is ready for use. It can optionally be considered to provide the finished connector 1 with additional components, such as an outer housing or the like, for example.
  • the contact point 6 is largely arranged in the free area 5.
  • the contact point 6 is not arranged in the free area 5, but offset thereto.
  • the contact point 6, which is located at the end of a contact tab of the contact partner 4 is displaced out of the free area 5 in the direction of the encapsulation 3.
  • the contact point 6 when considering the Figure 7 is also arranged to the left of the free area 5.
  • the contact point 6 is arranged only partially in the free area 5 and with the remaining part to the side of this free area 5.
  • FIG Figures 9 and 10 show the embodiment according to FIG Figures 3 to 5
  • Figures 11 and 12 show the embodiment according to FIG Figures 6 to 8 .
  • a round conductor instead of a round conductor, there is a lead frame attached to it.
  • the connection is not made via a crimp but, for example, via a welded connection (alternatively soldered connection).
  • the assembly obtained in this way is then inserted into an overmolding tool, with tool inserts in the area of the welded connection being matched to the insert so that a seal against the injection material is guaranteed so that it cannot penetrate into the functional area of the socket contact.
  • the invention thus relates to a socket carrier not claimed, which is equipped with socket contacts, a stamped grid being connected to the socket contact via, for example, a welded connection (alternatively soldered connection), and the assembly thus obtained is then inserted into an overmolding tool, with tool inserts in the area the welded connection are matched to the insert in such a way that a seal against the spray material is ensured so that it cannot penetrate into the functional area of the socket contact.
  • a welded connection alternatively soldered connection

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

Description

Die Erfindung betrifft einen Steckverbinder mit einen Kontaktträger, wobei der Kontaktträger zumindest eine Kontaktkammer aufweist, in die ein an einem Ende eines elektrischen Leiters angeordneter und mit diesem im Bereich einer Kontaktstelle elektrisch leitend verbundener Kontaktpartner eingesetzt ist, und der Endbereich des Steckverbinders, aus dem der elektrische Leiter aus dem Kontaktträger austritt, mit einer Umspritzung versehen ist, wobei der Kontaktträger einen Freibereich zur Aufnahme eines formgebenden Werkzeuges zur Herstellung der Umspritzung aufweist, gemäß den Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to a connector with a contact carrier, the contact carrier having at least one contact chamber into which a contact partner arranged at one end of an electrical conductor and electrically conductively connected to it in the area of a contact point is inserted, and the end area of the connector from which the electrical conductor emerges from the contact carrier, is provided with an encapsulation, the contact carrier having a free area for receiving a shaping tool for producing the encapsulation, according to the features of the preamble of claim 1.

Es ist aus der EP 1 122 840 A1 bekannt, dass die Abdichtung der Crimpbuchse gegen Spritzmaterial im Bereich des Drahtcrimpes realisiert wird. Bei diesem Stand der Technik wird ein Kontaktträger bereitgestellt, der zumindest eine Kontaktkammer aufweist. In die Kontaktkammer wird ein Kontaktpartner eingesetzt. Der Kontaktpartner ist über eine Crimpverbindung mit einem Litzenleiter verbunden. Anstelle des Litzenleiters kann auch ein Folienleiter zur Anwendung kommen. Der Kontaktträger weist Einstecköffnungen auf, die sich im Bereich der Crimpverbindung befinden, nachdem der Kontaktpartner in seine Kontaktkammer eingesetzt worden ist. Diese Einstecköffnungen dienen dazu, eine Geometrie eines Spritzgusswerkzeuges durch diese bis in Richtung der Crimpverbindung durchzuführen und diese dort in Anlage zu bringen. Dadurch wird vermieden, dass bei Anbringung der Umspritzung das Kunststoffspritzgussmaterial von dem hinteren Teil des Kontaktträgers in Richtung der Kontaktkammer beziehungsweise in Richtung des Kontaktpartners gelangt. Gleichzeitig wird durch diese Umspritzung die erforderliche Längswasserdichtheit erzielt, womit verhindert wird, dass ausgehend von dem Litzenleiter beziehungsweise dessen Kabelmantel Wasser, Feuchtigkeit oder dergleichen bis in Richtung des Kontaktbereiches, in dem der Kontaktpartner des Steckverbinders mit einem Gegenkontaktpartner eines Gegensteckverbinders zusammengesteckt ist, gelangen kann. Bezüglich der grundsätzlich bekannten Ausführung in Bezug auf die Herstellung und die Konstruktion des bekannten Steckverbinders und der sich daraus ergebenden Vorteile wird beispielsweise auf die Absätze [0006] bis [0008] und ebenfalls beispielsweise auf die Figur 9 nebst zugehöriger Beschreibung der EP 1 122 840 A1 verwiesen.It's from the EP 1 122 840 A1 known that the crimp socket is sealed against spray material in the area of the wire crimp. In this prior art, a contact carrier is provided which has at least one contact chamber. A contact partner is inserted into the contact chamber. The contact partner is connected to a stranded conductor via a crimp connection. Instead of the stranded conductor, a foil conductor can also be used. The contact carrier has insertion openings which are located in the area of the crimp connection after the contact partner has been inserted into its contact chamber. These insertion openings are used to carry out a geometry of an injection molding tool through this up in the direction of the crimp connection and to bring it into contact there. This will avoid that When the encapsulation is applied, the plastic injection molding material passes from the rear part of the contact carrier in the direction of the contact chamber or in the direction of the contact partner. At the same time, this encapsulation achieves the required longitudinal watertightness, which prevents water, moisture or the like from reaching the stranded conductor or its cable sheath in the direction of the contact area in which the contact partner of the connector is mated with a mating contact partner of a mating connector. With regard to the basically known design with regard to the manufacture and construction of the known connector and the advantages resulting therefrom, reference is made to paragraphs [0006] to [0008] and also, for example, to Figure 9 together with the associated description of the EP 1 122 840 A1 referenced.

Der Erfindung liegt die Aufgabe zugrunde, einen gattungsgemäßen Steckverbinder zu verbessern.The invention is based on the object of improving a connector of this type.

Diese Aufgabe ist durch die Merkmale des Patentanspruches 1 gelöst.This object is achieved by the features of claim 1.

Erfindungsgemäß ist vorgesehen, dass der elektrische Leiter eine Hartmetallkomponente und die elektrische Verbindung zwischen dem Kontaktpartner und der Hartmetallkomponente eine Schweiß- oder Lötverbindung ist. Mit anderen Worten sieht die Erfindung im Gegensatz zu dem bekannten Stand der Technik vor, diese Abdichtung auf einen Schweiß- oder Lötanschluss an Stelle des Drahtcrimpes zu realisieren. Der im Stand der Technik eingesetzte Litzenleiter lässt sich nicht über einen Schweißanschluss mit dem Kontaktpartner verbinden, sodass dies durch die Hartmetallkomponente erst möglich wird. Gleiches gilt für den Lötanschluss. Die Schweiß- oder Lötverbindung zwischen der Hartmetallkomponente und dem Kontaktpartner realisiert außerdem eine reproduzierbare Geometrie im Bereich der Kontaktstelle, sodass der Bereich eines ein- oder auch mehrteiligen Spritzgusswerkzeuges, der an der Kontaktstelle zur Anlage kommt, genau auf diese Geometrie abgestimmt werden kann, insbesondere bei der Serienherstellung von Steckverbindern mit Kontaktträger einschließlich ihrer Umspritzung. Dabei ist es grundsätzlich wichtig, dass die Geometrie in dem Bereich, in dem das Spritzgusswerkzeug zur Anlage kommt, eine definierte und reproduzierbare Gestaltung hat, da wiederum die Geometrie des Spritzgusswerkzeuges an diese definierte und reproduzierbare Gestaltung angepasst sein muss, um Undichtigkeiten während des Spritzgussvorganges zu vermeiden. Diese definierte und reproduzierbare Gestaltung lässt sich besonders gut realisieren, wenn sowohl der Kontaktpartner aus einem harten, das heißt unnachgiebigen Material besteht, als auch der elektrische Leiter, an den der Kontaktpartner angeschlossen ist. Bei einem Einsatz einer Crimpverbindung zwischen dem Kontaktpartner und dem Litzenleiter (beziehungsweise einem Folienleiter) besteht, wie es sich in der Praxis herausgestellt hat, immer wieder die Gefahr, dass die Crimpverbindung keine definierte sowie reproduzierbare Gestaltung aufweist und es somit beim Spritzgussvorgang zu Undichtigkeiten kommt. Dies wird insbesondere durch den Einsatz einer unter Krafteinwirkung des Spritzgusswerkzeuges nicht verformbaren Hartmetallkomponente, die den elektrischen Leiter bildet, vermieden.According to the invention it is provided that the electrical conductor is a hard metal component and the electrical connection between the contact partner and the hard metal component is a welded or soldered connection. In other words, in contrast to the known prior art, the invention provides for this seal to be implemented on a welded or soldered connection instead of the wire crimp. The stranded conductor used in the prior art cannot be connected to the contact partner via a weld connection, so that this is only possible through the hard metal component. The same applies to the solder connection. The welded or soldered connection between the hard metal component and the contact partner also realizes a reproducible geometry in the area of the Contact point, so that the area of a one-part or multi-part injection molding tool that comes to rest at the contact point can be precisely matched to this geometry, especially in the series production of connectors with contact carriers including their encapsulation. It is fundamentally important that the geometry in the area in which the injection molding tool comes into contact has a defined and reproducible design, since in turn the geometry of the injection molding tool must be adapted to this defined and reproducible design in order to prevent leaks during the injection molding process avoid. This defined and reproducible design can be implemented particularly well if both the contact partner consists of a hard, that is to say inflexible material, and the electrical conductor to which the contact partner is connected. When using a crimp connection between the contact partner and the stranded conductor (or a foil conductor), as has been found in practice, there is always the risk that the crimp connection does not have a defined and reproducible design and that leaks occur during the injection molding process. This is avoided in particular by using a hard metal component which cannot be deformed under the action of force from the injection molding tool and which forms the electrical conductor.

Im Stand der Technik ist es bekannt, dass die Einstecköffnungen (auch als Freibereich zu bezeichnen) in dem Kontaktträger genau an derjenigen Stelle vorhanden sind, in der auch die Crimpverbindung zwischen dem Kontaktpartner und dem Litzenleiter liegt. Gemäß der vorliegenden Erfindung kann dies ebenfalls der Fall sein, muss es aber nicht. In diesem Fall ist somit gemäß einer Weiterbildung der Erfindung vorgesehen, dass sich die Kontaktstelle in dem Freibereich befindet. Alternativ ist es denkbar, dass im Bereich der Einstecköffnungen (Freibereich) auch nur ein Teil des Kontaktpartners mit definierter Geometrie oder auch nur ein Teil der Hartmetallkomponente ebenfalls mit definierter Geometrie angeordnet wird und das Spritzgusswerkzeug auf diese definierte Geometrie fährt, dadurch die Abdichtung erzielt wird und danach der eigentliche Spritzgussvorgang zur Erstellung der Umspritzung zumindest eines Teiles des Kontaktträgers durchgeführt wird. Damit ist nach der Erfindung definiert, dass sich die Kontaktstelle außerhalb des Freibereiches befindet.In the prior art it is known that the insertion openings (also referred to as free area) are present in the contact carrier exactly at that point in which the crimped connection between the contact partner and the stranded conductor is also located. According to the present invention, this can also be the case, but does not have to be. In this case, a development of the invention provides that the contact point is located in the free area. Alternatively, it is conceivable that in the area of the insertion openings (free area) only a part of the contact partner with a defined geometry or only a part of the Hard metal component is also arranged with a defined geometry and the injection molding tool moves to this defined geometry, thereby achieving the seal and then carrying out the actual injection molding process for producing the overmolding of at least part of the contact carrier. According to the invention, it is thus defined that the contact point is located outside the free area.

In Weiterbildung der Erfindung ist vorgesehen, dass ein einem Steckbereich für einen Gegenkontaktpartner abgewandtes Ende des Kontaktpartners abgeflacht ist. Dadurch lässt sich nicht nur der Steckverbinder kompakt bauen, weil auch der Kontaktträger flach ausgeführt sein kann, sondern es lässt sich durch eine Schweiß- oder Lötverbindung auch eine flach bauende Kontaktstelle zwischen dem Kontaktpartner und der Hartmetallkomponente realisieren. Von besonderem Vorteil ist es, wenn das abgeflachte Ende des Kontaktpartners einen rechteckförmigen Querschnitt aufweist, der einem rechteckförmigen Querschnitt der Hartmetallkomponente in dem Bereich, in dem sie mit dem Kontaktpartner verbunden wird, entspricht.In a further development of the invention it is provided that an end of the contact partner facing away from a plug-in area for a mating contact partner is flattened. As a result, not only can the connector be built compactly, because the contact carrier can also be made flat, but a flat contact point between the contact partner and the hard metal component can also be realized by means of a welded or soldered connection. It is particularly advantageous if the flattened end of the contact partner has a rectangular cross section which corresponds to a rectangular cross section of the hard metal component in the area in which it is connected to the contact partner.

Weitere Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben und werden im Zusammenhang mit den Ausführungsbeispielen beschrieben.Further refinements of the invention are specified in the subclaims and are described in connection with the exemplary embodiments.

In einer besonders vorteilhaften Ausgestaltung der Erfindung ist die Hartmetallkomponente ein Stanzgitter. Ein solches Stanzgitter lässt sich bevorzugt anstelle von Litzenleitern oder Folienleitern anwenden, wenn die Stabilität des elektrischen Leiters und/oder die Übertragung hoher Energiedichten erforderlich ist.In a particularly advantageous embodiment of the invention, the hard metal component is a stamped grid. Such a stamped grid can preferably be used instead of stranded conductors or foil conductors when the stability of the electrical conductor and / or the transmission of high energy densities is required.

Zwei Ausführungsbeispiele, auf die die Erfindung jedoch nicht beschränkt ist, werden im Folgenden beschrieben und anhand der Figuren näher erläutert.Two exemplary embodiments, to which the invention is not limited, are described below and explained in more detail with reference to the figures.

In den Figuren 1 und 2 beziehungsweise 3 bis 5 ist ein erstes Ausführungsbeispiel eines Steckverbinders 1 dargestellt. Der Steckverbinder 1 weist einen Kontaktträger 2 auf, der zunächst eigenständig hergestellt wird. Die Herstellung kann beispielsweise in einem Kunststoffspritzgussverfahren erfolgen. Weiterhin weist der Kontaktträger 2 eine Umspritzung 3 auf. Die Umspritzung 3 befindet sich auf der dem Steckgesicht des Steckverbinders 1 abgewandten Ende, aus dem zumindest ein elektrischer Leiter herausgeführt ist. Im Bereich des Steckgesichtes des Kontaktträgers 2, wo keine Umspritzung 3 vorhanden ist, weist der Kontaktträger 2 zumindest eine Kontaktkammer, oftmals mehr als eine Kontaktkammer, auf, wobei in jeder Kontaktkammer ein Kontaktpartner 4 eingesetzt ist. Der Kontaktpartner 4 ist am Ende des elektrischen Leiters angeordnet.In the Figures 1 and 2 or 3 to 5, a first embodiment of a connector 1 is shown. The connector 1 has a contact carrier 2, which is initially produced independently. The production can take place, for example, in a plastic injection molding process. The contact carrier 2 also has an extrusion coating 3. The extrusion coating 3 is located on the end facing away from the plug face of the connector 1, from which at least one electrical conductor is led out. In the area of the mating face of the contact carrier 2, where there is no encapsulation 3, the contact carrier 2 has at least one contact chamber, often more than one contact chamber, a contact partner 4 being inserted in each contact chamber. The contact partner 4 is arranged at the end of the electrical conductor.

Wie in den Figuren 1 bis 5 dargestellt ist weist der Kontaktträger 2 einen Freibereich 5 auf. Der Freibereich 5 ist vorzugsweise durchgängig und wird nur von dem Kontaktpartner 2 beziehungsweise dem elektrischen Leiter unterbrochen, wenn der Kontaktpartner 2 in seiner Kontaktkammer in dem Kontaktträger 2 eingesetzt ist. Er kann aber auch in Form einer Ausnehmung gestaltet sein.As in the Figures 1 to 5 the contact carrier 2 is shown has a free area 5. The free area 5 is preferably continuous and is only interrupted by the contact partner 2 or the electrical conductor when the contact partner 2 is inserted in its contact chamber in the contact carrier 2. But it can also be designed in the form of a recess.

Der Kontaktpartner 2 ist über eine Kontaktstelle 6 mit dem elektrischen Leiter verbunden. Der elektrische Leiter ist nach der Erfindung eine Hartmetallkomponente 7, insbesondere ein Endbereich eines nicht näher dargestellten Stanzgitters. Im Bereich der Kontaktstelle 6 ist dieser Endbereich der Hartmetallkomponente 7 mit dem Kontaktpartner 4 über eine Schweiß- oder Lötverbindung angeordnet und elektrisch kontaktiert. Werden Steckverbinder 1 in Serie produziert ist darauf zu achten, dass die Geometrie, das heißt die äußere Gestaltung der Kontaktstelle 6 definiert und reproduzierbar für jeden Kontaktpartner 4, der am Ende derart Komponente 7 angeordnet ist, ausgeführt ist. Dies ist deshalb erforderlich, da ein nicht dargestelltes Spritzgusswerkzeug beziehungsweise Endbereiche eines ein- oder mehrteiligen Spritzgusswerkzeuges durch den Freibereich 5 (oder in eine Ausnehmung) durch (in) den Kontaktträger 2 durchgeführt (eingeführt) werden, bis diese Endbereiche auf der Kontaktstelle 6 zur Anlage kommen. Dadurch wird die Bildung der Umspritzung 3 des Steckverbinders 1 realisiert und gleichzeitig sichergestellt, dass kein Spritzgussmaterial in Richtung des Steckgesichtes des Steckverbinders 1 gelangen kann. Insbesondere wird vermieden, dass das Spritzgussmaterial in die Kontaktkammer des Kontaktträgers 2 eindringen kann.The contact partner 2 is connected to the electrical conductor via a contact point 6. According to the invention, the electrical conductor is a hard metal component 7, in particular an end region of a lead frame not shown in detail. In the area of the contact point 6, this end area of the hard metal component 7 is arranged with the contact partner 4 via a welded or soldered connection and electrically contacted. If connectors 1 are produced in series, care must be taken that the geometry, that is to say the external design of the contact point 6, is defined and reproducible for each contact partner 4 that is arranged at the end of such component 7. This is necessary because a Injection molding tool (not shown) or end areas of a one-part or multi-part injection molding tool can be passed through (inserted) through free area 5 (or into a recess) through contact carrier 2 until these end areas come to rest on contact point 6. This results in the formation of the encapsulation 3 of the connector 1 and at the same time ensures that no injection-molded material can get in the direction of the connector face of the connector 1. In particular, it is avoided that the injection molding material can penetrate into the contact chamber of the contact carrier 2.

Die Anordnung der Kontaktstelle 6 in dem Freibereich 5 ist besonders gut in den Schnittdarstellungen gemäß der Figuren 2, 4 und 5 erkennbar, wobei auch erkennbar ist, dass der Freibereich 5 nach der Bildung der Umspritzung 3 ebenfalls frei bleibt, da aus diesem Freibereich 5 das Spritzgusswerkzeug beziehungsweise die Endbereiche eines mehrteiligen Spritzgusswerkzeuges herausgeführt worden sind. Ebenso ist sehr gut erkennbar, dass nicht nur der dem Steckgesicht des Steckverbinders 1 abgewandelte Endbereich des Kontaktträgers 2 mit der Umspritzung umgeben worden ist, sondern auch ein Teilbereich der Hartmetallkomponente 7, die zusammen mit den schon angeordneten Kontaktpartner 4 von außen in den Kontaktträger 2 eingeführt wurde (vor der Umspritzung).The arrangement of the contact point 6 in the free area 5 is particularly good in the sectional views according to FIG Figures 2 , 4 and 5 recognizable, it can also be seen that the free area 5 also remains free after the formation of the encapsulation 3, since the injection molding tool or the end areas of a multi-part injection molding tool have been led out of this free area 5. It can also be seen very clearly that not only the end area of the contact carrier 2 modified from the plug face of the connector 1 has been encapsulated, but also a partial area of the hard metal component 7, which is inserted into the contact carrier 2 from the outside together with the already arranged contact partner 4 was (before the overmolding).

Die Herstellung des Steckverbinders 1 nach der Erfindung erfolgt daher wie folgt: es wird zunächst der Kontaktträger 2 hergestellt, zum Beispiel in einem Spritzgussvorgang aus Kunststoff hergestellt. Daneben wird die Hartmetallkomponente 7 bereitgestellt, genauso wie der Kontaktpartner 4. Der Kontaktpartner 4 wird über eine Löt- oder Schweißverbindung mit dem zugehörigen Ende der Hartmetallkomponente 7 elektrisch verbunden und dadurch fest angeordnet, wodurch sich eine genau definierte und reproduzierbare Geometrie der Kontaktstelle 6 ausbildet. Diese Einheit aus am Ende der Hartmetallkomponente 7 angeordneten Kontaktpartner 4 wird von der dem Steckgesicht des Steckverbinders 1 abgewandten Seite in den Kontaktträger 2 eingesetzt. Auch die Einführung dieser Einheit aus Richtung des Steckgesichtes ist alternativ denkbar. Nachdem der jeweilige Kontaktpartner 4 in seiner zugehörigen Kontaktkammer des Kontaktträgers 2 lagefixiert wurde (insbesondere mittels einer Primärverriegelung, beispielsweise mit einer Lasche des Kontaktpartners 4, die sich an einer entsprechenden Geometrie der Kontaktkammer abstützt), wird diese Baueinheit in ein Spritzgusswerkzeug eingesetzt. Dabei fährt ein Teil des Spritzgusswerkzeuges in den Freibereich 5 ein und kommt an der Kontaktstelle 6 zur Anlage. Anschließend wird der Innenbereich des Spritzgusswerkzeuges mit Spritzgussmaterial ausgefüllt, wodurch die beispielhaft gezeigte Form der Umspritzung 3 gebildet wird. Nachdem das Spritzgussmaterial ausgehärtet ist wird das Spritzgusswerkzeug entfernt und der fertige Steckverbinder 1 ist für seinen Einsatz bereit. Es kann gegebenenfalls daran gedacht werden, den fertigen Steckverbinder 1 mit weiteren Komponenten, wie zum Beispiel einem Außengehäuse oder dergleichen, noch ergänzend zu versehen.The connector 1 according to the invention is therefore produced as follows: the contact carrier 2 is first produced, for example made of plastic in an injection molding process. In addition, the hard metal component 7 is provided, as is the contact partner 4. The contact partner 4 is electrically connected to the associated end of the hard metal component 7 via a soldered or welded connection and is thus firmly arranged, resulting in a precisely defined and reproducible geometry of the contact point 6. This unit from the end of the hard metal component 7 arranged contact partner 4 is inserted into the contact carrier 2 from the side facing away from the plug face of the connector 1. The introduction of this unit from the direction of the mating face is also alternatively conceivable. After the respective contact partner 4 has been fixed in position in its associated contact chamber of the contact carrier 2 (in particular by means of a primary lock, for example with a tab of the contact partner 4, which is supported on a corresponding geometry of the contact chamber), this structural unit is inserted into an injection molding tool. A part of the injection molding tool moves into the free area 5 and comes to rest at the contact point 6. The inner area of the injection molding tool is then filled with injection molding material, as a result of which the shape of the encapsulation 3 shown as an example is formed. After the injection molding material has hardened, the injection molding tool is removed and the finished connector 1 is ready for use. It can optionally be considered to provide the finished connector 1 with additional components, such as an outer housing or the like, for example.

In den Figuren 1 bis 5 ist, wie schon dargelegt, die Kontaktstelle 6 weitestgehend in dem Freibereich 5 angeordnet.In the Figures 1 to 5 As already explained, the contact point 6 is largely arranged in the free area 5.

Im Gegensatz hierzu ist in dem Ausführungsbeispiel, welches in den Figuren 6 bis 8 dargestellt ist, die Kontaktstelle 6 nicht in dem Freibereich 5, sondern versetzt dazu angeordnet. Insbesondere mit Blick auf die Figur 7 ist erkennbar, dass die Kontaktstelle 6, die sich am Ende einer Kontaktfahne des Kontaktpartners 4 befindet, in Richtung der Umspritzung 3 aus dem Freibereich 5 heraus verlagert ist. Alternativ dazu ist es denkbar, dass die Kontaktstelle 6 bei Betrachtung der Figur 7 auch links von dem Freibereich 5 angeordnet wird. Ebenso ist es denkbar, dass die Kontaktstelle 6 nur zu einem Teil in dem Freibereich 5 und mit dem übrigen Teil seitlich von diesem Freibereich 5 angeordnet wird.In contrast to this, in the embodiment shown in FIGS Figures 6 to 8 is shown, the contact point 6 is not arranged in the free area 5, but offset thereto. Especially with a view to the Figure 7 it can be seen that the contact point 6, which is located at the end of a contact tab of the contact partner 4, is displaced out of the free area 5 in the direction of the encapsulation 3. Alternatively, it is conceivable that the contact point 6 when considering the Figure 7 is also arranged to the left of the free area 5. It is also conceivable that the contact point 6 is arranged only partially in the free area 5 and with the remaining part to the side of this free area 5.

Die Figuren 9 und 10 zeigen in anderer Darstellung das Ausführungsbeispiel gemäß der Figuren 3 bis 5 die Figuren 11 und 12 zeigen in anderer Darstellung das Ausführungsbeispiel gemäß der Figuren 6 bis 8.The Figures 9 and 10 show the embodiment according to FIG Figures 3 to 5 the Figures 11 and 12 show the embodiment according to FIG Figures 6 to 8 .

Das erfindungsgemäße Konzept besteht mit anderen Worten aus einem Buchsenträger (= Kontaktträger), welcher mit Buchsenkontakten (=Kontaktpartner) bestückt wird. Daran angeschlossen befindet sich jedoch anstelle eines runden Leiters ein Stanzgitter. Folglich wird die Verbindung nicht über einen Crimp, sondern über zum Beispiel eine Schweißverbindung (alternativ Lötverbindung) hergestellt. Die so gewonnene Baugruppe wird anschließend in ein Umspritzungswerkzeug eingelegt, wobei Werkzeugeinsätze im Bereich der Schweißverbindung so auf das Einlegeteil abgestimmt sind, dass eine Abdichtung gegen das Spritzmaterial gewährleistet ist, damit dieses nicht in den Funktionsbereich des Buchsenkontaktes vordringen kann. Die Erfindung betrifft somit einen nicht-beanspruchten Buchsenträger, welcher mit Buchsenkontakten bestückt wird, wobei ein Stanzgitter über zum Beispiel eine Schweißverbindung (alternativ Lötverbindung) mit dem Buchsenkontakt verbunden wird, und die so gewonnene Baugruppe anschließend in ein Umspritzungswerkzeug eingelegt wird, wobei Werkzeugeinsätze im Bereich der Schweißverbindung so auf das Einlegeteil abgestimmt sind, dass eine Abdichtung gegen das Spritzmaterial gewährleistet ist, damit dieses nicht in den Funktionsbereich des Buchsenkontaktes vordringen kann.In other words, the concept according to the invention consists of a socket carrier (= contact carrier) which is equipped with socket contacts (= contact partners). However, instead of a round conductor, there is a lead frame attached to it. As a result, the connection is not made via a crimp but, for example, via a welded connection (alternatively soldered connection). The assembly obtained in this way is then inserted into an overmolding tool, with tool inserts in the area of the welded connection being matched to the insert so that a seal against the injection material is guaranteed so that it cannot penetrate into the functional area of the socket contact. The invention thus relates to a socket carrier not claimed, which is equipped with socket contacts, a stamped grid being connected to the socket contact via, for example, a welded connection (alternatively soldered connection), and the assembly thus obtained is then inserted into an overmolding tool, with tool inserts in the area the welded connection are matched to the insert in such a way that a seal against the spray material is ensured so that it cannot penetrate into the functional area of the socket contact.

BezugszeichenlisteList of reference symbols

  1. 1. Steckverbinder1. Connector
  2. 2. Kontaktträger2. Contact carrier
  3. 3. Umspritzung3. Overmolding
  4. 4. Kontaktpartner4. Contact partner
  5. 5. Freibereich5. Free area
  6. 6. Kontaktstelle6. Contact point
  7. 7. Hartmetallkomponente7. Carbide component

Claims (8)

  1. Plug-in connector (1) with a contact carrier (2), wherein the contact carrier (2) has at least one contact chamber into which a contact partner (4) which is arranged at one end of an electrical conductor and is electrically conductively connected to the said electrical conductor in the region of a contact point (6) is inserted and the end region of the plug-in connector (1), out of which the electrical conductor exits from the contact carrier (2), is provided with an injection-moulded encapsulation (3), wherein the contact carrier (2) has a clearance (5) for receiving a shaping tool for producing the injection-moulded encapsulation (3), characterized in that the electrical conductor is a hard-metal component (7) and the electrical connection between the contact partner (4) and the hard-metal component (7) is a welded or soldered connection.
  2. Plug-in connector (1) according to Claim 1, characterized in that the contact point (6) is located in the clearance (5).
  3. Plug-in connector (1) according to Claim 1, characterized in that the contact point (6) is located outside the clearance (5).
  4. Plug-in connector (1) according to Claim 1, 2 or 3, characterized in that an end of the contact partner (4) that is averted from the plug-in region for a mating contact partner is flattened.
  5. Plug-in connector (1) according to Claim 4, characterized in that the flattened portion is present in the region of the contact point (6).
  6. Plug-in connector (1) according to Claim 5, characterized in that the flattened portion extends over the contact point (6) in the direction of the plug-in region for the mating contact partner and is situated in the clearance (5).
  7. Plug-in connector (1) according to one of the preceding claims, characterized in that the hard-metal component (7) is a leadframe.
  8. Plug-in connector (1) according to one of the preceding claims, characterized in that the hard-metal component (7) has at least one convex portion and/or at least one concave portion in the region of the injection-moulded encapsulation (3).
EP18165144.9A 2017-03-31 2018-03-29 Sealing for coasting a welded joint between receptacle contacts and stamped grid Active EP3382825B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017106965 2017-03-31

Publications (2)

Publication Number Publication Date
EP3382825A1 EP3382825A1 (en) 2018-10-03
EP3382825B1 true EP3382825B1 (en) 2020-10-21

Family

ID=61868307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18165144.9A Active EP3382825B1 (en) 2017-03-31 2018-03-29 Sealing for coasting a welded joint between receptacle contacts and stamped grid

Country Status (3)

Country Link
EP (1) EP3382825B1 (en)
DE (1) DE102018107650A1 (en)
ES (1) ES2836174T3 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2204756T3 (en) 2000-01-31 2004-05-01 Hirschmann Austria Gmbh MANUFACTURING PROCEDURE OF A CAP CONNECTOR AND CAP CONNECTOR.
JP2002343475A (en) * 2001-05-21 2002-11-29 Nagano Fujitsu Component Kk Stm connector and manufacturing method therefor
DE102015007725B4 (en) * 2015-05-27 2017-02-02 Wabco Gmbh Electrical connector

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
EP3382825A1 (en) 2018-10-03
ES2836174T3 (en) 2021-06-24
DE102018107650A1 (en) 2018-10-04

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