EP2061119A2 - Contact element and procedure for manufacturing - Google Patents

Contact element and procedure for manufacturing Download PDF

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Publication number
EP2061119A2
EP2061119A2 EP20080020007 EP08020007A EP2061119A2 EP 2061119 A2 EP2061119 A2 EP 2061119A2 EP 20080020007 EP20080020007 EP 20080020007 EP 08020007 A EP08020007 A EP 08020007A EP 2061119 A2 EP2061119 A2 EP 2061119A2
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EP
European Patent Office
Prior art keywords
contact
holder
cylindrical
socket
electrical contact
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.)
Granted
Application number
EP20080020007
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German (de)
French (fr)
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EP2061119A3 (en
EP2061119B1 (en
Inventor
Wolfgang Langhoff
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Amphenol Tuchel Electronics GmbH
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Amphenol Tuchel Electronics GmbH
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Publication of EP2061119A2 publication Critical patent/EP2061119A2/en
Publication of EP2061119A3 publication Critical patent/EP2061119A3/en
Application granted granted Critical
Publication of EP2061119B1 publication Critical patent/EP2061119B1/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
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
    • 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
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section

Definitions

  • the invention relates to an electrical contact element comprising a socket contact and a contact holder, according to the preamble of claim 1.
  • Connectors in particular connector sockets of the type mentioned above, are also referred to as RADSOK connectors and are characterized in particular in that their contact area is cage-like, that is, that a cylindrical or semi-cylindrical hollow body is designed, which preferably has contact blades in the longitudinal direction or contact spring arms for contacting with a plug pin.
  • socket contacts of the type mentioned are usually made as stamped / bent parts of a metal sheet.
  • cylindrical socket contact elements which are also stamped from a metal sheet, wherein the cylindrical socket body is produced by rolling or bending and rolling of the punching plate.
  • Such a connector is for example from the DE 197 34 524 C2 known.
  • a cylindrical socket contact consisting of a contact part and a connector, shown, wherein the contact part has a cylinder shell and the cylinder jacket is formed at least one stamped from the jacket contact spring tongue, which dive into the receiving area of the cylinder, so that a pin with these spring contact elements can contact as soon as it is plugged into the cylindrical socket contact.
  • Another cylindrical socket contact is from the DE 3702012 known. There is disclosed a manufacturing method for producing a tubular end piece.
  • FIG. 3 to FIG. 5 a RADSOK socket is shown there, which is provided with a connection socket on the outer sleeve of the RADSOK socket.
  • Difficulties in the RADSOK sockets of the aforementioned type are that it is difficult to produce a line, so an electrical connection with a line and a connection element.
  • a likewise substantially cylindrical contact is shown, which shows as a female connector, with a plurality of contact areas hyperbolically arranged in a contact section of the plug socket for electrically contacting a plug part which can be coupled to the plug socket.
  • the plug-in bush is here formed in one piece and in particular made of a one-piece stamped part, which is bent into the shape of the socket, with simultaneous punching of a suitable contact terminal portion is formed here as a crimp with multiple Crimplappen.
  • An electrical cable of different cable diameters can be connected to this connection box.
  • the receiving area of the smallest male conductor cross-section and the largest male conductor cross-section to be accommodated is limited by the specific geometry of the crimp terminal.
  • connection region plays a role relative to the contact arrangement, so that simple rectilinear contact connection regions can be formed, but on the other hand it is also desirable through installation positions to produce a different connection geometry.
  • Another requirement for a good contact system is the requirement for a high current carrying capacity with safe contact holding force of the Contact on a corresponding pin or counterpart, that is, it is desirable to create a contact geometry as possible so that it is solid and stable, but on the other hand, but inexpensive to manufacture and actual.
  • Such a contact system consisting of a contact element, which is designed as a hyperbolically rotated contact element, which in turn is pressed in a substantially cylindrical contact holder.
  • This contact holder can, as shown in this document in Figs. 9 and 10, be formed in a straight line and depending on the requirements in different lengths.
  • a 90 ° angled connection region that is to say a connection geometry, can also be formed perpendicular to the insertion direction of the contact element.
  • Generic connector systems is therefore common that they have a Maisganggangs Scheme between contact element and contact holder, ie connection area, which is typically regarded as a weak point of the overall system.
  • this transition region limits the service life of the contact system and, on the other hand, limits the electrical transmission properties. With regard to the service life, failures can occur at the transitional area due to thermal, mechanical or corrosive stresses which render the contact inoperable, or the contact holder with its connection area separates from the contactor element.
  • Another object of the present invention is to make the connection of the contact element with the contact holder so that one and the same contact element with a plurality of similar but with manufacturing tolerances affected contact holder can be brought into a secure and high-strength connection.
  • An additional object of the present invention is to be able to equip known contact systems with the contact holders according to the invention, without having to change the previous manufacturing processes for such contact systems; speak to eliminate the production-related shape and position tolerances of existing systems by the contact holder.
  • a contact element consisting of a socket contact and a contact holder, which is designed as Aufschrumpfcardhalter.
  • the socket contact itself consists of a cylindrical socket contact cage, also referred to as a so-called RADSOK cage, and a cylindrical bushing sleeve, in which the cylindrical socket contact cage is formed.
  • the contact cage and the female contact sleeve form the female contact, which is suitably connected to the shrink-on contact holder.
  • the cylindrical socket contact is thus connected to a thermally shrinkable contact holder, also referred to as a shrink-fit contact holder, by thermal shrinking.
  • the contact holder is provided with a substantially cylindrical opening which is made smaller in its inner diameter, such as the outer diameter of the corresponding cylindrical socket contact.
  • the inner diameter of the contact holder can be set defined with a suitable choice of temperature during heating and cooling the normal force on the cylindrical tube jacket, This gives a very tight interference fit between the contact holder and the socket contact, which is permanently stable and a high current carrying capacity.
  • the inner surface of the contact holder which serves as a contact surface to the cylindrical tube shell, geometrically structure in which, for example, a variety of finest grooves along the inner surface are mounted, which then impress on cooling in the tubular jacket, and to a enlarged contact surface and thus lead to improved current carrying capacity.
  • a contact element 1 is shown. This consists of a substantially cylindrical socket contact 2 and a contact holder 3 attached thereto.
  • the contact holder 3 is fixedly connected to a cable 4.
  • the socket contact 2 is formed as a substantially cylindrical socket contact with a cylindrical tube shell 21.
  • a contact cage 20 is fitted, as in Fig. 3 shown.
  • the contact holder 3 is embodied here as a shrink-on contact holder and is designed essentially as an annular element 30 and a connection section 31.
  • the connection section 31 connects the ring element 30 with the cable 4.
  • the contact holder 3 is formed so that a cable 4 in the 90 ° outlet, that is arranged perpendicular to the insertion direction S of the contact element 1.
  • the outer diameter of the tubular jacket 21 is defined as diameter D1.
  • the inner diameter of the ring member 30 is provided with a diameter D2, wherein the diameter D2 of the ring member 30 is formed smaller, such as the diameter D1 of the tube shell 21.
  • the inner diameter D2 is formed only slightly smaller than the outer diameter D1 of the tube shell 21.
  • the diameter D2 can also be significantly reduced compared to the outer diameter D1, so that in the process of applying the contact holder 3 on the socket contact 2, a high temperature is necessary to the ring member 30 corresponding to the diameter D2 expand a diameter greater than D1.
  • Fig. 2 is a bottom view of the contact element 1 according to the invention, according to Fig. 1 , shown.
  • the middle contact cage portion 23 In the inner region of the middle contact cage portion 23 is shown, with the diameter D3, which can be widened when plugged with a korrespondlerenden mating connector.
  • retaining slats 25 At the upper edge there are retaining slats 25, which are bent back around a further cylindrical pipe section, namely the cylindrical pipe sleeve 22 back and thus are firmly connected to the pipe sleeve.
  • the outer portions of the retaining louvers 24 are based on their outer surface 26 at the Inner wall surface 27 of the cylindrical tube shell 21 from.
  • the socket contact both from the one, as well as from the other direction stuck because it has an opening 29 on both sides.
  • the opening 29 tapers toward the center contact cage portion 23 increasingly by torsion of the contact cage 20, as in FIG Fig. 3 clearly visible. This is due to a relative movement, thus a rotation of the upper annular ridge 28 relative to the lower annular ridge 28 by a defined angle.
  • the middle contact cage portion 23 is formed, which can be formed with increased torsion optionally with a smaller diameter or weaker torsion with a larger diameter.
  • the cylindrical tube sleeve 22 is fitted in the cylindrical tube jacket 21 and pressed by means of the retaining lamellae 25 with this.
  • Fig. 4 can be seen, is the perspective view of a contact element according to the invention, in which the contact holder is connected as a 90 ° outlet with a cable 4. Alternatively, of course, any other geometric connection angle or shape can be chosen.
  • a ring element 30 with stepped inner diameter D2, so that when expanding to a diameter, larger D1, at the same time several preferably parallel rotating ring sections, with different inner diameter and cooling the contact holder 3 according to the outer diameter D1 optimally by means of trained annular sections shrink on the tube material 21 and can be connected with a press fit.

Abstract

The electrical contact element has a cylindrical socket contact (2) and a contact holder, where the contact holder is connected with the socket contact in a force-fit and form-fit manner. The contact holder is connected with a ring element, where the cylindrical socket contact encloses at a cylindrical tubular sheath. An inner diameter of the ring element is designed in a molded manner. An independent claim is included for a method for manufacturing an electrical contact element.

Description

Die Erfindung betrifft ein elektrisches Kontaktelement, umfassend einen Buchsenkontakt und einen Kontakthalter, gemäß dem Oberbegriff des Patentanspruchs 1. Steckverbinder, insbesondere Steckverbinderbuchsen der Eingangs genannten Art, werden auch als RADSOK-Steckverbinder bezeichnet und sind insbesondere dadurch gekennzeichnet, dass ihr Kontaktbereich käfigartig ausgebildet ist, das heißt, dass ein zylindrischer oder halbzylindrischer Hohlkörper gestaltet ist, der vorzugsweise in Längsrichtung Kontaktlamellen besitzt oder Kontaktfederarme zur Kontaktierung mit einem Steckerstift. Aus Kostengründen werden Buchsenkontakte der Eingangs genannten Art üblicherweise als Stanz-/Biegeteile aus einem Blech hergestellt.The invention relates to an electrical contact element comprising a socket contact and a contact holder, according to the preamble of claim 1. Connectors, in particular connector sockets of the type mentioned above, are also referred to as RADSOK connectors and are characterized in particular in that their contact area is cage-like, that is, that a cylindrical or semi-cylindrical hollow body is designed, which preferably has contact blades in the longitudinal direction or contact spring arms for contacting with a plug pin. For cost reasons socket contacts of the type mentioned are usually made as stamped / bent parts of a metal sheet.

Im Stand der Technik sind verschiedene zylinderförmige Buchsenkontaktelemente bekannt, die ebenfalls aus einem Blech gestanzt sind, wobei der zylinderförmige Buchsenkörper durch Rollen beziehungsweise Biegen und Rollen des Stanzbleches erzeugt wird.In the prior art, various cylindrical socket contact elements are known, which are also stamped from a metal sheet, wherein the cylindrical socket body is produced by rolling or bending and rolling of the punching plate.

Eine solche Steckverbindung ist beispielsweise aus der DE 197 34 524 C2 bekannt. Hier wird ein zylinderförmiger Buchsenkontakt, bestehend aus einem Kontaktteil und einem Anschlussteil, gezeigt, wobei das Kontaktteil einen Zylindermantel aufweißt und der Zylindermantel mindestens einer aus dem Mantel gestanzten Kontaktfederzunge ausgebildet ist, welcher in den Aufnahmebereiches des Zylinders eintauchen, so dass ein Steckerstift mit diesen Federkontaktelementen kontaktieren kann, sobald dieser in den zylinderförmigen Buchsenkontakt gesteckt wird.Such a connector is for example from the DE 197 34 524 C2 known. Here, a cylindrical socket contact, consisting of a contact part and a connector, shown, wherein the contact part has a cylinder shell and the cylinder jacket is formed at least one stamped from the jacket contact spring tongue, which dive into the receiving area of the cylinder, so that a pin with these spring contact elements can contact as soon as it is plugged into the cylindrical socket contact.

Ein weiterer zylinderförmiger Buchsenkontakt ist aus der DE 3702012 bekannt. Dort ist ein Herstellungsverfahren zur Herstellung eines rohrförmigen Endstücks offenbart.Another cylindrical socket contact is from the DE 3702012 known. There is disclosed a manufacturing method for producing a tubular end piece.

Weiterhin ist in der DE 10 2006 012 434 A1 ebenfalls ein RADSOK-Steckverbinder beziehungsweise eine Steckverbindung der RADSOK-Bauart gezeigt mit einer Buchse und einem in die Buchse einsteckbarem Stecker, wobei an der RADSOK-Buchse und dem Stecker Rastmittel ausgebildet sind, die ein definiertes Festhalten von Buchse und Stecker ermöglichen.Furthermore, in the DE 10 2006 012 434 A1 also a RADSOK connector or a connector of RADSOK type shown with a socket and a plug-in connector into the socket, wherein on the RADSOK socket and the plug locking means are formed, which allow a defined holding the socket and plug.

In Fig. 3 bis Fig. 5 wird dort eine RADSOK-Buchse gezeigt, welche mit einem Anschlusstopf an der Außenhülse der RADSOK-Buchse versehen ist.In FIG. 3 to FIG. 5 a RADSOK socket is shown there, which is provided with a connection socket on the outer sleeve of the RADSOK socket.

Schwierigkeiten bei den RADSOK-Buchsen der vorgenannten Art bestehen darin, dass es schwierig ist, eine Leitung, also eine elektrische Verbindung mit einer Leitung und einem Anschlusselement, herzustellen. Insbesondere bestehen Schwierigkeiten darin, ein Verbindungselement derart bereitzustellen, dass es zu einem Festsitz zwischen Verbindungselement und Außenhülse der Kontaktbuchse kommt.Difficulties in the RADSOK sockets of the aforementioned type are that it is difficult to produce a line, so an electrical connection with a line and a connection element. In particular, there are difficulties in providing a connecting element such that it comes to a tight fit between the connecting element and the outer sleeve of the contact socket.

In der DE 441 377 ist ein Verfahren beschrieben, wie mittels schrumpfen von Hülsen das Verbinden von Teilen erzeugt wird. Dort ist auch ein Verfahren zur Herstellung von Verbindungen von Leitungs- oder Haltedrähten angegeben, welche durch Schrumpfwirkung eine Presseinrichtung erzeugen.In the DE 441 377 For example, a method is described of shrinking sleeves to make parts join together. There is also a method for the preparation of compounds of lead or holding wires specified which produce a shrink device by means of a shrinking action.

Weiterhin Ist aus der WO98/43321 ein ebenfalls im Wesentlichen zylinderförmig ausgebildeter Kontakt gezeigt, welcher als Steckerbuchse, mit mehreren in einem Kontaktabschnitt der Steckerbuchse hyperbolisch angeordneten Kontaktbereichen zum elektrischen Kontaktieren eines mit der Steckerbuchse koppelbaren Steckerteils zeigt. Die Steckerbusche ist hier einteilig ausgebildet und insbesondere aus einem einteiligen Stanzteil gefertigt, welches In die Form der Steckerbuchse gebogen ist, unter gleichzeitigem Ausstanzen eines für den Kontakt geeigneten Anschlussabschnittes der hier als Crimpanschluss mit mehreren Crimplappen ausgebildet ist. An diesen Anschlussberelch lässt sich eine elektrische Leitung unterschiedlicher Leitungsdurchmesser anschlagen. Allerdings ist der Aufnahmebereich des kleinsten aufzunehmenden Leiterquerschnittes und des größten aufzunehmenden Leiterquerschnittes durch die konkrete Geometrie des Crimpanschlusses begrenzt.Furthermore, is from the WO98 / 43321 a likewise substantially cylindrical contact is shown, which shows as a female connector, with a plurality of contact areas hyperbolically arranged in a contact section of the plug socket for electrically contacting a plug part which can be coupled to the plug socket. The plug-in bush is here formed in one piece and in particular made of a one-piece stamped part, which is bent into the shape of the socket, with simultaneous punching of a suitable contact terminal portion is formed here as a crimp with multiple Crimplappen. An electrical cable of different cable diameters can be connected to this connection box. However, the receiving area of the smallest male conductor cross-section and the largest male conductor cross-section to be accommodated is limited by the specific geometry of the crimp terminal.

Grundsätzlich stellt sich jedoch immer die Frage, wie unter geeigneter Weise der eigentliche Kontakt mit einer daran anzuschließenden elektrischen Leitung verbunden werden kann. Einerseits spielt die Geometrie des Anschlussbereiches relativ zur Kontaktanordnung eine Rolle, so dass einfache geradlinige Kontaktanschlussbereiche ausgebildet sein können, andererseits es aber auch durch Einbaulagen wünschenswert ist, eine andere Anschlussgeometrie zu erzeugen. Eine weitere Voraussetzung an ein gutes Kontaktsystem ist die Anforderung an eine hohe Stromtragfähigkeit bei sicherer Kontakthaltekraft des Kontaktes auf einem korrespondierendem Steckerstift oder Gegenstück, Das heißt, es ist wünschenswert, eine Kontaktgeometrie möglichst so zu schaffen, dass diese massiv und stabil ist, andererseits aber günstig herzustellen und Ist. Gleichzeitig steht die Anforderung im Raum, ein Kontaktsystem derart zu schaffen, dass verschiedene Abgangswinkel der Anschlussbereiche realisierbar sind, ohne eine Vielzahl unterschiedlicher Kontaktelemente bevorraten zu müssen, Schon aus Gründen der Lagehaltung und der Kosteneffizienz ist es daher wünschenswert, möglichst mit einem Kontaktelement eine Vielzahl von Einbausituation abbilden zu können, in dem sich die Anschlussgeometrie auf die Einbausituation entsprechend abstimmen lässt. Verwendet man insofern einen zusätzlichen Kontakthalter, der diese Eigenschaften erfüllt und verbindet diesen mit dem Kontaktelement in einer zur Applikation gewünschten Anordnung, so erhält man zwar die Vielzahl der gewünschten Einbaumöglichkeiten, jedoch mit dem einhergehenden Nachteil, dass eine zusätzliche elektrische Übergangsstelle zwischen dem Kontakthalter und dem eigentlichen Kontakt auftritt, die es zu vermeiden gilt.In principle, however, the question always arises as to how the actual contact can be connected to a connected electrical line under suitable conditions. On the one hand, the geometry of the connection region plays a role relative to the contact arrangement, so that simple rectilinear contact connection regions can be formed, but on the other hand it is also desirable through installation positions to produce a different connection geometry. Another requirement for a good contact system is the requirement for a high current carrying capacity with safe contact holding force of the Contact on a corresponding pin or counterpart, that is, it is desirable to create a contact geometry as possible so that it is solid and stable, but on the other hand, but inexpensive to manufacture and actual. At the same time there is the requirement in space to create a contact system such that different outlet angles of the terminal areas can be realized, without having to stockpile a large number of different contact elements, Already for reasons of posture and cost efficiency, it is desirable, if possible with a contact element a variety of Installation situation in which the connection geometry can be adapted to the installation situation accordingly. If one uses insofar an additional contact holder that meets these characteristics and connects it to the contact element in an application desired arrangement, so you get the variety of the desired installation options, but with the accompanying disadvantage that an additional electrical transition point between the contact holder and the actual contact occurs, which should be avoided.

Im Stand der Technik offenbart beispielsweise die WO00/70713 ein solches Kontaktsystem, bestehend aus einem Kontaktelement, welches als hyperbolisch rotiertes Kontaktelement ausgebildet ist, was wiederum in einem im Wesentlichen zylindrigen Kontakthalter eingepresst ist. Dieser Kontakthalter kann, wie in dieser Druckschrift in Fig. 9 und 10 gezeigt, geradlinig ausgebildet sein und je nach Anforderung in unterschiedlichen Längen.In the prior art, for example, discloses WO00 / 70713 Such a contact system, consisting of a contact element, which is designed as a hyperbolically rotated contact element, which in turn is pressed in a substantially cylindrical contact holder. This contact holder can, as shown in this document in Figs. 9 and 10, be formed in a straight line and depending on the requirements in different lengths.

Alternative dazu kann, wie beispielsweise in Fig. 11, auch ein 90° gewinkelter Anschlussbereich, sprich eine Anschlussgeometrie, senkrecht zur Steckrichtung des Kontaktelementes ausgebildet sein. Gattungsgemäßen Steckverbindersystemen ist daher gemeinsam, dass diese über einen Kontaktobergangsbereich zwischen Kontaktelement und Kontakthalter, sprich Anschlussbereich verfügen, welcher typischerweise als Schwachpunkt des Gesamtsystems zu betrachten ist. Dieser Übergangsbereich beschränkt einerseits die Lebensdauer des Kontaktsystems und limitiert andererseits die elektrischen Übertragungseigenschaften. Bezüglich der Lebensdauer kann es zu Ausfällen an dem Übergangsbereich durch thermische, mechanische oder korrosive Belastungen kommen, die den Kontakt funktionsunfähig machen, beziehungsweise der Kontakthalter mit seinem Anschlussbereich sich von dem Koritaktelement trennen. Bezüglich der elektrischen Eigenschaften führt dies gleichzeitig dazu, dass die Stromtragfähigkeit abnimmt und der elektrische Widerstand stetig zunimmt, so dass das System zusätzlich durch thermische Überhitzung ständig unter Wärmebelastung steht. Diese Effekte sind als unerwünschte Effekte solcher gattungsgemäßer Steckverbindersysteme zu betrachten und es ist daher Aufgabe der vorliegenden Erfindung, die oben genannten Nachteile zu überwinden und ein Kontaktelement mit einem Kontakthalter sicher, dauerhaft und kostengünstig zu verbinden.Alternatively to this, as for example in FIG. 11, a 90 ° angled connection region, that is to say a connection geometry, can also be formed perpendicular to the insertion direction of the contact element. Generic connector systems is therefore common that they have a Kontaktganggangsbereich between contact element and contact holder, ie connection area, which is typically regarded as a weak point of the overall system. On the one hand, this transition region limits the service life of the contact system and, on the other hand, limits the electrical transmission properties. With regard to the service life, failures can occur at the transitional area due to thermal, mechanical or corrosive stresses which render the contact inoperable, or the contact holder with its connection area separates from the contactor element. With regard to the electrical properties, this simultaneously leads to the fact that the current carrying capacity decreases and the electrical resistance increases steadily, so that the system additionally by thermal Overheating is constantly under heat load. These effects are to be considered as undesirable effects of such generic connector systems and it is therefore an object of the present invention to overcome the above-mentioned disadvantages and to connect a contact element with a contact holder safely, permanently and inexpensively.

Weitere Aufgabe der vorliegenden Erfindung ist es, die Verbindung des Kontaktelementes mit dem Kontakthalter so zu gestalten, dass ein und dasselbe Kontaktelement mit einer Vielzahl gleichartiger aber mit Fertigungstoleranzen behafteten Kontakthalter in eine sichere und hochfeste Verbindung gebracht werden kann.Another object of the present invention is to make the connection of the contact element with the contact holder so that one and the same contact element with a plurality of similar but with manufacturing tolerances affected contact holder can be brought into a secure and high-strength connection.

Eine zusätzliche Aufgabe der vorliegenden Erfindung besteht darin, bekannte Kontaktsysteme mit den erfindungsgemäßen Kontakthaltern ausstatten zu können, ohne die bisherigen Fertigungsprozesse für solche Kontaktsysteme verändern zu müssen; sprich die fertigungsbedingten Form- und Lagetoleranzen vorhandener Systeme durch den Kontakthalter zu eliminieren.An additional object of the present invention is to be able to equip known contact systems with the contact holders according to the invention, without having to change the previous manufacturing processes for such contact systems; speak to eliminate the production-related shape and position tolerances of existing systems by the contact holder.

Weiterhin ist es Aufgabe der vorliegenden Erfindung, ein Verfahren zu schaffen, um ein erfindungsgemäßen Kontakthalter mit einem erfindungsgemäßen Kontaktelement zu verbinden und dabei die Toleranzproblematik zu überwinden.It is another object of the present invention to provide a method for connecting a contact holder according to the invention with a contact element according to the invention and thereby overcome the tolerance problem.

Erfindungsgemäß wird ein Kontaktelement bestehend aus einem Buchsenkontakt und einem Kontakthalter bereitgestellt, welche als Aufschrumpfkontakthalter ausgebildet ist.According to the invention a contact element is provided consisting of a socket contact and a contact holder, which is designed as Aufschrumpfkontakthalter.

Aufgabe der vorliegenden Erfindung in Bezug auf den genannten Stand der Technik und insbesondere in Bezug auf die DE 441 377 besteht also darin, einen Aufschrumpfkontakthalter bereitzustellen, welcher verbessert wirkt und einen hohen Presssitz erreicht.Object of the present invention with respect to the cited prior art and in particular with respect to the DE 441 377 It is therefore to provide a Aufschrumpfkontakthalter, which acts improved and achieved a high press fit.

Die Aufgabe wird gelöst durch die Merkmale des Anspruchs 1, sowie die des Anspruchs 11.The object is solved by the features of claim 1, as well as the claim 11th

In den Unteransprüchen sind bevorzugte Ausführungsformen der Erfindung gekennzeichnet.In the subclaims preferred embodiments of the invention are characterized.

Der Buchsenkontakt selbst besteht aus einem zylinderförmigen Buchsenkontaktkäfig, auch als so genannten RADSOK-Käfig bezeichnet, und einer zylinderförmigen Buchsenhülse, in welchen der zylinderförmige Buchsenkontaktkäfig eingeformt ist. Der Kontaktkäfig und die Buchsenkontakthülse bilden den Buchsenkontakt, welcher mit dem Aufschrumpfkontakthalter in geeigneter Weise verbunden wird.The socket contact itself consists of a cylindrical socket contact cage, also referred to as a so-called RADSOK cage, and a cylindrical bushing sleeve, in which the cylindrical socket contact cage is formed. The contact cage and the female contact sleeve form the female contact, which is suitably connected to the shrink-on contact holder.

Erfindungsgemäß wird somit der zylinderförmige Buchsenkontakt mit einem thermisch aufschrumpfbaren Kontakthalter, auch als Aufschrumpfkontakthalter bezeichnet, durch thermisches Aufschrumpfen verbunden. Dabei ist der Kontakthalter mit einer im Wesentlichen zylinderförmigen Öffnung versehen, die in ihrem Innendurchmesser geringer ausgeführt ist, wie der Außendurchmesser des korrespondierenden zylindrischen Buchsenkontaktes. Durch die Erwärmung des Kontakthalters kann eine Aufweitung des Lochdurchmessers im Kontakthalter erreicht werden, so dass die Montage des Kontakthalters am Buchsenkontakt kurzfristig ermöglicht wird. Diese Aufweitung erlaubt das Einführen des Buchsenkontaktes in den Kontakthalter. Durch gezieltes Abkühlen oder Abschrecken der Verbindung zieht sich der thermisch aufgewelterte Kontakthalter zusammen, wodurch der Innendurchmesser reduziert wird und beim Erkalten auf den zylindrischen Rohrmantel des Buchsenkontaktes aufgeschrumpft wird. Durch die gezielte geometrische Ausgestaltung des Innendurchmessers des Kontakthalters kann bei geeigneter Wahl der Temperatur beim Erhitzen und beim Erkalten die Normalkraft auf den zylinderförmigen Rohrmantel definiert eingestellt werden, Hierdurch erhält man einen sehr festen Presssitz zwischen dem Kontakthalter und dem Buchsenkontakt, welcher dauerhaft stabil ist und eine hohe Stromtragfähigkeit aufweist.According to the invention, the cylindrical socket contact is thus connected to a thermally shrinkable contact holder, also referred to as a shrink-fit contact holder, by thermal shrinking. In this case, the contact holder is provided with a substantially cylindrical opening which is made smaller in its inner diameter, such as the outer diameter of the corresponding cylindrical socket contact. By heating the contact holder, a widening of the hole diameter in the contact holder can be achieved, so that the mounting of the contact holder is made possible at the socket contact in the short term. This expansion allows insertion of the socket contact into the contact holder. By deliberately cooling or quenching the compound, the thermally grown contact holder contracts, whereby the inner diameter is reduced and is shrunk on cooling to the cylindrical tube jacket of the socket contact. Due to the specific geometric design of the inner diameter of the contact holder can be set defined with a suitable choice of temperature during heating and cooling the normal force on the cylindrical tube jacket, This gives a very tight interference fit between the contact holder and the socket contact, which is permanently stable and a high current carrying capacity.

In einer Ausbildung der Erfindung lässt sich die Innenfläche des Kontakthalters, die als Anlagefläche zum zylinderförmigen Rohrmantel dient, geometrisch strukturieren, in dem beispielsweise eine Vielzahl feinster Riefen entlang der Innenoberfläche angebracht werden, die sich dann beim Erkalten in den rohrförmigen Mantel einprägen, und zu einer vergrößerten Anlageoberfläche und damit zu einer verbesserten Stromtragfähigkeit führen.In one embodiment of the invention, the inner surface of the contact holder, which serves as a contact surface to the cylindrical tube shell, geometrically structure in which, for example, a variety of finest grooves along the inner surface are mounted, which then impress on cooling in the tubular jacket, and to a enlarged contact surface and thus lead to improved current carrying capacity.

Im Folgenden wird die Erfindung anhand der Beschreibung eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnungen näher erläutert. Daher zeigen:

  • Fig. 1 eine Seitenansicht eines erfindungsgemäßen Buchsenkontaktes mit angeschlossenem Aufschrumpkontakthalter,
  • Fig. 2 eine Ansicht von unten auf das erfindungsgemäße Kontaktelement gemäß Fig. 1;
  • Fig. 3 stellt einen Schnitt durch das Kontaktelement gemäß Fig. 1 dar;
  • Fig. 4 zeigt eine perspektivische Ansicht eines Kontaktelements mit Kontakthalter.
In the following the invention will be explained in more detail with reference to the description of an embodiment with reference to the drawings. Therefore show:
  • Fig. 1 a side view of a socket contact according to the invention with connected Aufschrumpkontakthalter,
  • Fig. 2 a view from below of the contact element according to the invention according to Fig. 1 ;
  • Fig. 3 represents a section through the contact element according to Fig. 1 group;
  • Fig. 4 shows a perspective view of a contact element with contact holder.

In Fig. 1 ist ein Kontaktelement 1 gezeigt. Dieses besteht aus einem im Wesentlichen zylinderförmigen Buchsenkontakt 2 und einem daran befestigten Kontakthalter 3.In Fig. 1 a contact element 1 is shown. This consists of a substantially cylindrical socket contact 2 and a contact holder 3 attached thereto.

Der Kontakthalter 3 ist fest mit einem Kabel 4 verbunden. Der Buchsenkontakt 2 ist ausgebildet als ein im Wesentlich zylinderförmiger Buchsenkontakt mit einem zylinderförmigen Rohrmantel 21. In den zylinderförmigen Rohrmantel 21 ist ein Kontaktkäfig 20 eingepasst, wie in Fig. 3 gezeigt. Der Kontakthalter 3 ist hier als Aufschrumpfkontakthalter ausgebildet und ist im Wesentlichen als ringförmiges Element 30 und einem Anschlussabschnitt 31 ausgebildet. Der Anschlussabschnitt 31 verbindet das Ringelement 30 mit dem Kabel 4. In der in Fig. 1 gezeigten Darstellungsform ist der Kontakthalter 3 so ausgebildet, dass ein Kabel 4 im 90° Abgang, also senkrecht zur Steckrichtung S des Kontaktelementes 1 angeordnet ist. Der Außendurchmesser des Rohrmantels 21 ist definiert als Durchmesser D1. Der Innendurchmesser des Ringelementes 30 ist mit einem Durchmesser D2 versehen, wobei der Durchmesser D2 des Ringelementes 30 geringer ausgebildet ist, wie der Durchmesser D1 des Rohrmantels 21. Vorzugsweise ist der Innendurchmesser D2 nur unwesentlich geringer ausgebildet als der Außendurchmesser D1 des Rohrmantels 21. Zur Erhöhung der Normalkräfte des Kontakthalters 3 zum Buchsenkontakt 2 kann der Durchmesser D2 auch deutlich vermindert ausgebildet sein gegenüber dem Außendurchmesser D1, so dass beim Verfahren des Aufbringens des Kontakthalters 3 auf den Buchsenkontakt 2 eine hohe Temperatur notwendig wird, um das Ringelement 30 entsprechend vom Durchmesser D2 auf einen Durchmesser größer D1 auszuweiten. In der Fig. 2 ist eine Ansicht von unten auf das erfindungsgemäße Kontaktelement 1, gemäß Fig. 1, gezeigt. Im inneren Bereich ist der mittlere Kontaktkäfigabschnitt 23 gezeigt, mit dem Durchmesser D3, welcher beim Stecken mit einem korrespondlerenden Gegenstecker aufgeweitet werden kann. Am oberen Rand befinden sich Haltelamellen 25, die um einen weiteren zylindrischen Rohrabschnitt, nämlich der zylindrischen Rohrhülse 22 nach hinten zurück umgebogen sind und somit fest mit der Rohrhülse verbunden sind. Die äußeren Abschnitte der Haltelamellen 24 stützen sich mit ihrer Außenfläche 26 an der Inneren Wandfläche 27 des zylinderförmigen Rohrmantels 21 ab. Zwischen den Kontaktlamellen 24 und den Haltelamellen 25 befinden sich im Wesentlichen ringförmige Abschnitte 28, welche als Ringstege 28 gebildet sind. Diese Ringstege 28 befinden sich jeweils am oberen und unteren Ende des Buchsenkontaktes 2. Insofern lässt sich der Buchsenkontakt, sowohl von der einen, wie auch von der anderen Richtung stecken, da er beidseitig über eine Öffnung 29 verfügt. Die Öffnung 29 verjüngt sich zum mittleren Kontaktkäfigabschnitt 23 zunehmend durch Torsion des Kontaktkäfigs 20, wie in Fig. 3 deutlich ersichtlich. Dies entsteht durch eine relativ Bewegung, somit ein Verdrehen des oberen Ringsteges 28 gegenüber dem unteren Ringsteg 28, um einen definierten Winkel.The contact holder 3 is fixedly connected to a cable 4. The socket contact 2 is formed as a substantially cylindrical socket contact with a cylindrical tube shell 21. In the cylindrical tube shell 21, a contact cage 20 is fitted, as in Fig. 3 shown. The contact holder 3 is embodied here as a shrink-on contact holder and is designed essentially as an annular element 30 and a connection section 31. The connection section 31 connects the ring element 30 with the cable 4. In the in Fig. 1 shown embodiment, the contact holder 3 is formed so that a cable 4 in the 90 ° outlet, that is arranged perpendicular to the insertion direction S of the contact element 1. The outer diameter of the tubular jacket 21 is defined as diameter D1. The inner diameter of the ring member 30 is provided with a diameter D2, wherein the diameter D2 of the ring member 30 is formed smaller, such as the diameter D1 of the tube shell 21. Preferably, the inner diameter D2 is formed only slightly smaller than the outer diameter D1 of the tube shell 21. To increase the normal forces of the contact holder 3 to the socket contact 2, the diameter D2 can also be significantly reduced compared to the outer diameter D1, so that in the process of applying the contact holder 3 on the socket contact 2, a high temperature is necessary to the ring member 30 corresponding to the diameter D2 expand a diameter greater than D1. In the Fig. 2 is a bottom view of the contact element 1 according to the invention, according to Fig. 1 , shown. In the inner region of the middle contact cage portion 23 is shown, with the diameter D3, which can be widened when plugged with a korrespondlerenden mating connector. At the upper edge there are retaining slats 25, which are bent back around a further cylindrical pipe section, namely the cylindrical pipe sleeve 22 back and thus are firmly connected to the pipe sleeve. The outer portions of the retaining louvers 24 are based on their outer surface 26 at the Inner wall surface 27 of the cylindrical tube shell 21 from. Between the contact blades 24 and the retaining slats 25 are substantially annular portions 28, which are formed as annular webs 28. These ring lands 28 are located at the top and bottom of the female contact 2. In this respect, the socket contact, both from the one, as well as from the other direction stuck because it has an opening 29 on both sides. The opening 29 tapers toward the center contact cage portion 23 increasingly by torsion of the contact cage 20, as in FIG Fig. 3 clearly visible. This is due to a relative movement, thus a rotation of the upper annular ridge 28 relative to the lower annular ridge 28 by a defined angle.

Durch diese Torsion wird der mittlere Kontaktkäfigabschnitt 23 gebildet, welcher bei verstärkter Torsion wahlweise mit geringerem Durchmesser oder bei schwächerer Torsion mit größerem Durchmesser ausgebildet werden kann. Die zylinderförmige Rohrhülse 22 ist in die zylinderförmigen Rohrmantel 21 eingepasst und mittels der Haltelamellen 25 mit diesem verpresst. In Fig. 4 ersichtlich, ist die perspektivische Ansicht eines erfindungs-gemäßen Kontaktelementes, bei dem der Kontakthalter als 90° Abgang mit einem Kabel 4 verbunden ist. Alternativ können natürlich jede andere geometrische Anbindungswinkel oder Form gewählt werden. Auch ist es möglich, ein Ringelement 30 mit abgestuften Innendurchmesser D2 auszubilden, so dass beim Aufweiten auf einen Durchmesser, größer D1, gleichzeitig mehrere vorzugsweise parallel umlaufende Ringabschnitte entstehen, mit unterschiedlichem Innendurchmesser und beim Abkühlen sich der Kontakthalter 3 entsprechend dem Außendurchmesser D1 optimal mittels der ausgebildeten Ringabschnitten am Rohrmaterial 21 aufschrumpfen lässt und mit einem Presssitz verbinden lässt.By this twist, the middle contact cage portion 23 is formed, which can be formed with increased torsion optionally with a smaller diameter or weaker torsion with a larger diameter. The cylindrical tube sleeve 22 is fitted in the cylindrical tube jacket 21 and pressed by means of the retaining lamellae 25 with this. In Fig. 4 can be seen, is the perspective view of a contact element according to the invention, in which the contact holder is connected as a 90 ° outlet with a cable 4. Alternatively, of course, any other geometric connection angle or shape can be chosen. It is also possible to form a ring element 30 with stepped inner diameter D2, so that when expanding to a diameter, larger D1, at the same time several preferably parallel rotating ring sections, with different inner diameter and cooling the contact holder 3 according to the outer diameter D1 optimally by means of trained annular sections shrink on the tube material 21 and can be connected with a press fit.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

Kontaktelement und Verfahren zur Herstellung eines Kontaktelementes

1
Kontaktelement
2
Buchsenkontakt
3
Kontakthalter
4
Kabel
20
Kontaktkäfig
21
zylinderförmiger Rohrmantel
22
zylinderförmige Rohrhülse
23
mittlerer Kontaktkäfigabschnitt
24
Kontaktlamellen
25
Haltelamellen
26
Außenfläche der Haltelamellen
27
Innenwand
28
Ringstege
30
Ringelement
31
Anschlussabschnitt
Contact element and method for producing a contact element
1
contact element
2
female contact
3
contact holder
4
electric wire
20
contact cage
21
cylindrical tube jacket
22
cylindrical tube sleeve
23
middle contact cage section
24
Multilams
25
holding slats
26
Outer surface of the retaining slats
27
inner wall
28
ring lands
30
ring element
31
connecting section

Claims (11)

Elektrisches Kontaktelement (1) umfassend einen zylinderförmigen Buchsenkontakt (2) und einen Kontakthalter (3), welcher mit dem Buchsenkontakt (2) kraft- und formschlüssig verbunden ist und der Kontakthalter (3) mit einem Ringelement (30) verbunden ist, welcher den zylinderförmigen Buchsenkontakt (2) am zylinderförmigen Rohrmantel (21) umschließt, dadurch gekennzeichnet, dass der Innendurchmesser D2 des Ringelementes (30) profiliert ausgebildet ist.Electrical contact element (1) comprising a cylindrical socket contact (2) and a contact holder (3) which is positively and positively connected to the socket contact (2) and the contact holder (3) with a ring member (30) is connected, which the cylindrical Socket contact (2) on the cylindrical tube jacket (21) encloses, characterized in that the inner diameter D2 of the ring element (30) is formed profiled. Elektrisches Kontaktelement (1) gemäß Anspruch 1, dadurch gekennzeichnet, dass die Profilierung aus einer Vielzahl feinster Riefen entlang der Innenoberfläche ausgebildet ist zum Einprägen in den zylinderförmigen Rohrmantel (21).Electrical contact element (1) according to claim 1, characterized in that the profiling of a plurality of finest grooves along the inner surface is formed for embossing in the cylindrical tube jacket (21). Elektrisches Kontaktelement (1) gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Buchsen kontakt (2) über einen Kontaktkäfig (20) verfügt und über einen zylinderförmigen Rohrmantel (21), in welchem der Kontaktkäfig (20) eingebracht ist.Electrical contact element (1) according to claim 1 or 2, characterized in that the bushing contact (2) has a contact cage (20) and via a cylindrical tube jacket (21), in which the contact cage (20) is introduced. Elektrisches Kontaktelement (1) gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Außendurchmesser D1 des zylinderförmigen Rohrmantels (21) des Buchsenkontaktes (2) im unverbundenen Zustand mit dem Kontakthalter (3) vergrößert ausgebildet ist gegenüber dem Innendurchmesser des Ringelementes (30) des Kontakthalters (3).Electrical contact element (1) according to one of the preceding claims, characterized in that the outer diameter D1 of the cylindrical tubular casing (21) of the socket contact (2) in the unconnected state with the contact holder (3) is enlarged relative to the inner diameter of the ring element (30) of Contact holder (3). Elektrisches Kontaktelement (1) gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Kontakthalter (3) als Aufschrumpfkontakthalter ausgebildet ist und durch thermisches Erhitzen und anschließendes Abkühlen auf den zylinderförmigen Rohrmantel (21) aufschrumpfbar ist, so dass dieser mit dem Rohrmantel (21) form- und kraftschlüssig verbunden ist.Electrical contact element (1) according to one of the preceding claims, characterized in that the contact holder (3) is designed as Aufschrumpfkontakthalter and by thermal heating and subsequent cooling to the cylindrical tube shell (21) is shrinkable, so that this with the tube shell (21) is positively and non-positively connected. Elektrisches Kontaktelement (1) gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Innenwandabschnitt des Ringelementes (30) über mehrere Ringabschnitte mit unterschiedlichen Durchmessern verfügt, von denen mindestens zwei kleiner als der Außendurchmesser D1 des zylinderförmigen Rohrmantels (21) ausgebildet sind.Electrical contact element (1) according to one of the preceding claims, characterized in that the inner wall section of the ring element (30) has a plurality of ring sections with different diameters, of which at least two are smaller than the outer diameter D1 of the cylindrical tubular jacket (21). Elektrisches Kontaktelement (1) gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Kontaktkäfig (20) als zylinderförmig hyperbolischer Kontaktkäfig ausgebildet ist, umfassend eine Vielzahl von im wesentlich parallel verlaufenden Kontaktlamellen (24).Electrical contact element (1) according to one of the preceding claims, characterized in that the contact cage (20) is designed as a cylindrically hyperbolic contact cage, comprising a plurality of substantially parallel contact blades (24). Elektrisches Kontaktelement (1) gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Buchsenkontakt (2) über zwei sich diametral gegenüberliegende Stecköffnungen (29) verfügt, mittels derer das Kontaktelement (1) mit einem korrespondierenden Kontaktstift wahlweise mit einer der beiden Öffnungen (29) in Verbindung gebracht werden kann.Electrical contact element (1) according to one of the preceding claims, characterized in that the socket contact (2) has two diametrically opposite insertion openings (29), by means of which the contact element (1) with a corresponding contact pin optionally with one of the two openings (29 ) can be associated. Elektrisches Kontaktelement (1) gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Kontakthalter (3) über einen Anschlussabschnitt (31) verfügt, welcher formschlüssig mit dem Ringelement (30) verbunden ist.Electrical contact element (1) according to one of the preceding claims, characterized in that the contact holder (3) has a connection portion (31) which is positively connected to the ring element (30). Elektrisches Kontaktelement (1) gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zylinderförmige Rohrmantel (21) mittels Haltelamellen (24) mit dem Kontaktkäfig (20) und einer den Kontaktkäfig umgebene zylinderförmige Rohrhülse (22) verbunden ist.Electrical contact element (1) according to one of the preceding claims, characterized in that the cylindrical tube jacket (21) is connected by means of retaining lamellae (24) to the contact cage (20) and a cylindrical tube sleeve (22) surrounding the contact cage. Verfahren zur Herstellung eines elektrischen Kontaktelementes (1) gemäß einem der vorhergehenden Ansprüche, gekennzeichnet durch die folgenden Schritte: a) Ausbilden eines zylinderförmigen Buchsenkontaktes (2) mit einer diesen umgebenen zylinderförmigen Rohrmantel (21) mit einem Außendurchmesser D1; b) wählen eines Kontakthalters (3) mit einem Ringelement (30), welcher über einen Innendurchmesser D2 verfügt, welcher etwas kleiner ist wie der Außendurchmesser D1; c) Erhitzen des Kontakthalters (3) und thermisches Ausdehnen des Ringelementes (30); d) Aufbringen des thermisch vergrößerten Kontakthalters (3) auf den zylinderförmigen Rohrmantel (21) an geeigneter Position; e) Abkühlen des Kontakthalters (3) zum Aufschrumpfen auf den Rohrmantel (21). Method for producing an electrical contact element (1) according to one of the preceding claims, characterized by the following steps: a) forming a cylindrical socket contact (2) with a cylindrical tube jacket (21) surrounded with an outer diameter D1; b) selecting a contact holder (3) with a ring element (30), which has an inner diameter D2, which is slightly smaller than the outer diameter D1; c) heating the contact holder (3) and thermally expanding the ring element (30); d) applying the thermally enlarged contact holder (3) on the cylindrical tube shell (21) at a suitable position; e) cooling the contact holder (3) for shrinking onto the tube jacket (21).
EP08020007.4A 2007-11-17 2008-11-17 Contact element and procedure for manufacturing Active EP2061119B1 (en)

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