EP0516937A2 - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
EP0516937A2
EP0516937A2 EP92105677A EP92105677A EP0516937A2 EP 0516937 A2 EP0516937 A2 EP 0516937A2 EP 92105677 A EP92105677 A EP 92105677A EP 92105677 A EP92105677 A EP 92105677A EP 0516937 A2 EP0516937 A2 EP 0516937A2
Authority
EP
European Patent Office
Prior art keywords
contact
plug
chamber
annular bead
connector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP92105677A
Other languages
German (de)
French (fr)
Other versions
EP0516937A3 (en
Inventor
Gerhard Wehrle
Michael Sonn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hirschmann Electronics GmbH and Co KG
Original Assignee
Hirschmann Electronics GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hirschmann Electronics GmbH and Co KG filed Critical Hirschmann Electronics GmbH and Co KG
Publication of EP0516937A2 publication Critical patent/EP0516937A2/en
Publication of EP0516937A3 publication Critical patent/EP0516937A3/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/422—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means

Definitions

  • the invention relates to a connector according to the preamble of claim 1.
  • a connector according to the preamble of claim 1.
  • FIGS. 1a to 1c For the required tolerance compensation between the socket contacts and the associated pin contacts, constructive solutions are known, as are shown in principle in FIGS. 1a to 1c.
  • this has a collar 4 arranged in an enlarged recess 2 of the contact chamber 3, the dimensions of which are smaller in the axial and radial directions than those of the recess 2;
  • a cover plate 5 is provided to secure the contact element 1 against falling out.
  • the conductor connection-side and the plug-side shaft 6 of the contact element 1 pass through a bore 7 in the cover plate 5, the clear width of which, like that of the plug-side part of the contact chamber 3, is larger than the shaft diameter.
  • the contact element 1 in the contact carrier 5, 8 is displaceable in the radial and axial direction and tiltable against the plug-in axis, so that large tolerances can be compensated for with appropriate dimensions.
  • the manufacture of the contact carrier is expensive due to the required cover plate and its attachment for receiving the plug-in pressure and, moreover, its assembly is difficult, particularly in the case of multi-pole plug-in connectors, the connection-side contact parts of which are not all relevant the associated recesses in the cover plate to be fitted are in the correct position.
  • the contact embedding in the contact carrier 5, 8 is not watertight and the area of application of this embodiment is therefore limited.
  • FIG. 1 c it is also known (FIG. 1 c) to firmly mount the contact element 15 in the plug-side end region of the contact chamber 16 of the one-piece contact carrier 17 by means of a thickened section 18 with a safety collar 19.
  • the mobility of the contact element 15 is achieved by a thin bending zone 20.
  • the contact carrier is in one piece, but the mobility of the contact element and thus the compensable tolerance range is low because the bending zone can only be made relatively short due to space reasons and because of the practically always required small electrical volume resistance.
  • a high plug-in force is required to bend the contact element during the plug-in process, which can make plugging in very difficult if not impossible at high numbers of poles and also causes pin contact between the pin and socket contact with excessive volume resistance.
  • the invention is therefore based on the object of developing a connector according to the preamble of claim 1 in such a way that a high degree of mobility of the contact element in the contact chamber is ensured in the simplest and cheapest possible way.
  • both the contact element and the contact carrier can be made in one piece, as a result of which the manufacturing and assembly costs are minimized.
  • the contact elements are only pressed into the contact chambers and are detachably held therein. The strength of this holder is very easy to adapt to the requirements of the individual case by the choice of the dimensions, in particular the curved areas.
  • the connector does not have to be watertight, even a floating mounting of the annular bead in the annular groove is possible, so that no additional plug-in force is required at all for deflecting the contact element when inserting a counter-contact element that is not exactly axially aligned with it, an advantage which is particularly true with multipole connectors the plugging process made much easier.
  • the connector according to the invention can, however, be produced watertight easily and above all without additional measures, the desired tightness being very easy to achieve by dimensioning the curved surfaces and their spacing and by choosing a material of the contact carrier which is suitable with regard to the elasticity.
  • the contact element remains easily deflectable even when there are high demands on the tightness, that is to say a large contact pressure of the annular bead against the wall of the annular groove.
  • a thin bending zone is provided according to claim 5, which is particularly effective when there is a strong tilt of the contact element and counter-contact element.
  • FIG. 2 shows, as an exemplary embodiment of the connector according to the invention, a section through a contact carrier area of a twenty-pin connector with a contact chamber and contact elements inserted therein.
  • the contact carrier 21 which is arranged in a connector housing (not shown for the sake of clarity), has twenty contact chambers 22, into each of which a contact socket 23 is inserted from the cable connection side and detachably held therein.
  • the connection-side end regions of the contact chambers 22 are designed as free-standing domes 24, which have an insertion funnel 25 at the end and then an annular groove 26 with a spherical shell-shaped contour.
  • the plug-side end regions of the contact chambers 22 each have an insertion bevel 28 for the secure insertion of a plug pin 27 rounded at the tip and then a tapered section 29 for coarse centering thereof.
  • the contact sockets 23 consist of a tubular cable connection part 30 for soldering the stripped end a cable strand, a spherical annular bead 31, a thin bent part 32 and a socket 33 which is constructed from two resilient half-shells 35 separated by a longitudinal slot 34 with a funnel-shaped receptacle 36 at the free end.
  • the assembly of the connector is due to the one-piece contact carrier 21 only in that the contact socket 23 until the snap-in connection, i.e. of the spherical annular bead 31 into the annular groove 26 with an adapted spherical shell-shaped contour into which contact chambers 22 are inserted.
  • the connector is therefore extremely inexpensive to manufacture.
  • the spherical annular bead 31 can be freely pivoted in all directions in the spherical shell-shaped annular groove 26, that is to say the contact socket 23 can be deflected out of the axial position, the deflection range and thus the maximum compensatable thru-axis offset of the contact socket 23 and plug pin 27 being very simple due to the dimensions of the Contact chamber 22 can be determined.
  • the arrangement of the bearing 26, 31 on the connection-side end region of the contact chambers 22 results in a relatively small angle between the socket axis 37 and the pin axis 38 even with a large deflection, so that a low insertion force is thereby required. This is further reduced by the thin bent part 32, which is used for non-aligned axes 37, 38 for an additional reduction of the mentioned angle, i.e. Alignment of the socket 33 in the direction of the axis 38 of the pin 27 ensures.
  • FIG. 2 shows the maximum possible offset of the two plug contact axes 37, 38.
  • the plug pin 27 is first guided on the upper edge of the tapered section 29 of the contact chamber 22 and then slides forward with its rounded tip into the funnel-shaped receptacle 36 of the socket 33, which is caused by deflection, ie by rotation of the contact socket 23 in the bearing 26 , 31 and is additionally brought into a position in alignment with the plug pin 27 by slightly bending the bent part 32.
  • This structure which corresponds practically completely to a floating arrangement, not only effectively avoids “riders”, but also the insertion forces very much low, which is an extremely important advantage, especially for multipole connectors.
  • the material of the contact carrier 21, the length and wall thickness of the domes 24 and the size of the abutting bearing surfaces and the diameter of the annular bead 31 are expediently chosen so that, on the one hand, the contact bushes 23 can be inserted easily and, on the other hand, a sufficiently high pull-off force without special means ( contact latches 23, which can be releasably locked, is ensured.
  • the pressure with which the annular bead 31 bears against the spherical shell-shaped surface of the annular groove 26 can of course also be determined using these parameters.
  • this pressure can be zero by appropriate selection of the sizes mentioned, with which the insertion forces are minimal, ie only depend on the required contact pressure that the prestressed half-shells 35 on the respectively inserted plug pin 27 exercise.
  • Such a design is therefore particularly suitable for multi-pin connectors.
  • this can be done by selecting the parameters listed above for a wide pressure range.
  • the plug contact holder and bearing designed according to the invention provide a connector which is extremely inexpensive in terms of construction and assembly, which has all the advantages of the floating contact element arrangement and, moreover, can be carried out watertight without additional measures if required. These advantages are particularly noticeable with multi-pin connectors and are particularly important for mass products such as connectors.

Abstract

In a plug connector having a contact support (21) consisting of insulating material and having at least one plug contact (23) which is arranged in a contact chamber (22) in the contact support (21), it is provided that, in the operating state, the plug contact (23) is supported by means of an externally domed annular bead (31) in an annular groove (26), which is matched to the contour of said annular bead (31), in the end region, on the connection side, of the contact chamber (22). This results in a plug connector which is extremely cost-effective in production and construction and nevertheless has the advantages of a floating contact-element arrangement, with respect to the production tolerances of the plugged-together contact elements and their orientation tolerances. Furthermore, the solution according to the invention is also suitable for the production of waterproof plug connectors, without any additional measures. <IMAGE>

Description

Die Erfindung betrifft einen Steckverbinder gemäß dem Oberbegriff des Anspruches 1.
Vorteilhaft bei solchen Steckverbindern ist insbesondere eine schwimmende Anordnung der Kontaktelemente (z.B. Steckbuchsen) weil dadurch ermöglicht ist, auch bei einer ungünstigen Summierung der unvermeidlichen Form- und Lagetoleranzen der Kontaktelemente selbst sowie der Fertigungstoleranzen des beispielsweise im Spritzgußverfahren hergestellten Kontaktträgers sogenannte "Aufsitzer" der Steckerstifte auf oder gar neben den Buchsenwänden und damit Beschädigungen und/oder Fehlfunktionen der Kontaktelemente vermeidbar zu machen.The invention relates to a connector according to the preamble of claim 1.
With such connectors, it is particularly advantageous to have a floating arrangement of the contact elements (for example plug sockets) because this enables so-called "riders" of the connector pins even with an unfavorable summation of the inevitable shape and position tolerances of the contact elements themselves and the manufacturing tolerances of the contact carrier, for example, which is produced by injection molding or even next to the socket walls and thus make damage and / or malfunction of the contact elements avoidable.

Für den erforderlichen Toleranzausgleich zwischen den Buchsen- und den zugehörigen Stiftkontakten sind konstruktive Lösungen bekannt, wie sie in den Figuren 1a bis 1c als Prinzipdarstellungen gezeigt sind.
Bei einer Ausführung gemäß Figur 1a mit schwimmendem Kontaktelement 1 weist dieses einen in einer erweiterten Ausnehmung 2 der Kontaktkammer 3 angeordneten Bund 4 auf, dessen Abmessungen in axialer und radialer Richtung geringer sind als die der Ausnehmung 2; zur Sicherung des Kontaktelementes 1 gegen Herausfallen ist eine Abdeckplatte 5 vorgesehen. Der leiteranschlußseitige und der steckseitige Schaft 6 des Kontaktelementes 1 durchsetzt eine Bohrung 7 der Abdeckplatte 5, deren lichte Weite ebenso wie die des steckseitigen Teils der Kontaktkammer 3 größer ist als der Schaftdurchmesser. Auf diese Weise ist das Kontaktelement 1 im Kontaktträger 5, 8 in radialer und axialer Richtung verschiebbar und gegen die Steckachse neigbar, so daß bei entsprechenden Abmessungen große Toleranzen ausgleichbar sind.
Andererseits ist die Herstellung des Kontaktträgers durch die erforderliche Abdeckplatte sowie ihre Befestigung zur Aufnahme des Steckdruckes teuer und zudem deren Montage insbesondere bei vielpoligen Steckverbindern schwierig, deren anschlußseitige Kontaktteile ja nicht alle hinsichtlich der zugehörigen Ausnehmungen in der aufzusetzenden Abdeckplatte lagerichtig sind.
Überdies ist die Kontakteinbettung im Kontaktträger 5, 8 nicht wasserdicht und der Anwendungsbereich dieser Ausführung somit beschränkt.For the required tolerance compensation between the socket contacts and the associated pin contacts, constructive solutions are known, as are shown in principle in FIGS. 1a to 1c.
In an embodiment according to FIG. 1a with a floating contact element 1, this has a collar 4 arranged in an enlarged recess 2 of the contact chamber 3, the dimensions of which are smaller in the axial and radial directions than those of the recess 2; To secure the contact element 1 against falling out, a cover plate 5 is provided. The conductor connection-side and the plug-side shaft 6 of the contact element 1 pass through a bore 7 in the cover plate 5, the clear width of which, like that of the plug-side part of the contact chamber 3, is larger than the shaft diameter. In this way, the contact element 1 in the contact carrier 5, 8 is displaceable in the radial and axial direction and tiltable against the plug-in axis, so that large tolerances can be compensated for with appropriate dimensions.
On the other hand, the manufacture of the contact carrier is expensive due to the required cover plate and its attachment for receiving the plug-in pressure and, moreover, its assembly is difficult, particularly in the case of multi-pole plug-in connectors, the connection-side contact parts of which are not all relevant the associated recesses in the cover plate to be fitted are in the correct position.
In addition, the contact embedding in the contact carrier 5, 8 is not watertight and the area of application of this embodiment is therefore limited.

Bei der bekannten Lösung gemäß Figur 1b, bei der zur Sicherung des Kontaktelementes 9 gegen Herausfallen Rastlappen 10 vorgesehen sind, die bei in die Kontaktkammer 11 eingeführtem Kontaktelement 9 an der steckseitigen Schulter eines Bundes 12 anliegen, sind in gleicher Weise ebenfalls große Toleranzen ausgleichbar. Auch bei dieser Ausführung muß aber der Kontaktträger 13, 14 mit den beschriebenen Nachteilen zweiteilig ausgeführt sein, damit er beim Spritzgußverfahren entformbar ist.In the known solution according to FIG. 1b, in which latching tabs 10 are provided to secure the contact element 9 against falling out, which rest against the plug-side shoulder of a collar 12 when the contact element 9 is inserted into the contact chamber 11, large tolerances can likewise be compensated for. In this embodiment, too, the contact carrier 13, 14 with the disadvantages described must be made in two parts so that it can be removed from the mold during the injection molding process.

Als Alternative ist es weiterhin bekannt (Figur 1c), das Kontaktelement 15 im steckseitigen Endbereich der Kontaktkammer 16 des einstückigen Kontaktträgers 17 mittels eines verdickten Abschnittes 18 mit Sicherungsbund 19 fest zu lagern. Bei dieser Anordnung wird die Beweglichkeit des Kontaktelements 15 durch eine dünne Biegezone 20 erreicht. Hierbei ist zwar der Kontaktträger einteilig, die Beweglichkeit des Kontaktelementes und damit der ausgleichbare Toleranzbereich jedoch gering, weil die Biegezone aus Platzgründen nur relativ kurz und wegen des praktisch immer erforderlichen kleinen elektrischen Durchgangswiderstandes nicht besonders dünn ausgeführt werden kann. Dadurch ist zum Ausbiegen des Kontaktelements beim Steckvorgang überdies eine hohe Steckkraft nötig, was bei hohen Polzahlen ein Einstecken sehr schwierig wenn nicht gar unmöglich machen kann und außerdem eine punktförmige Berührung von Stift- und Buchsenkontakt mit zu hohem Durchgangswiderstand bewirkt.As an alternative, it is also known (FIG. 1 c) to firmly mount the contact element 15 in the plug-side end region of the contact chamber 16 of the one-piece contact carrier 17 by means of a thickened section 18 with a safety collar 19. In this arrangement, the mobility of the contact element 15 is achieved by a thin bending zone 20. Here, the contact carrier is in one piece, but the mobility of the contact element and thus the compensable tolerance range is low because the bending zone can only be made relatively short due to space reasons and because of the practically always required small electrical volume resistance. As a result, a high plug-in force is required to bend the contact element during the plug-in process, which can make plugging in very difficult if not impossible at high numbers of poles and also causes pin contact between the pin and socket contact with excessive volume resistance.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Steckverbinder nach dem Oberbegriff des Anspruches 1 derart weiterzubilden, daß auf möglichst einfache und kostengünstige Weise eine hohe Beweglichkeit des Kontaktelements in der Kontaktkammer gewährleistet ist.The invention is therefore based on the object of developing a connector according to the preamble of claim 1 in such a way that a high degree of mobility of the contact element in the contact chamber is ensured in the simplest and cheapest possible way.

Diese Aufgabe ist durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.
Durch diese ohne besondere Herstellkosten einfachst realisierbare Ausbildung des Kontaktelementes und der Kontaktkammer kann sowohl das Kontaktelement als auch der Kontaktträger einstückig ausgeführt sein, wodurch die Herstell- und die Montagekosten minimiert sind. Die Kontaktelemente werden dabei lediglich in die Kontaktkammern eingedrückt und sind darin lösbar rastend gehalten. Die Festigkeit dieser Halterung ist sehr einfach durch die Wahl der Abmessungen insbesondere der gewölbten Bereiche den Erfordernissen des Einzelfalles anpaßbar. Darüberhinaus ist eine allseitige Auslenkung des Steckelements gegenüber der Steckachse und somit ein optimaler Ausgleich von Lagetoleranzen der ineinanderzusteckenden Kontaktelemente ermöglicht, wobei dieser Bereich äußerst einfach durch die Kontaktkammerabmessungen dem jeweiligen Bedarf entsprechend wählbar ist.
Durch die leichte Auslenkbarkeit der Kontaktelemente sind auch bei großem Versatz der Steckachsen nur geringe Einsteckkräfte erforderlich. Darüberhinaus tritt auch keine punktförmige Kontaktgabe auf, vielmehr liegen die Steckerstifte gleichmäßig an den Buchsenwänden an, so daß ein geringer Durchgangswiderstand und eine hohe Kontaktsicherheit gewährleistet sind. Sofern der Steckverbinder nicht wasserdicht sein muß, ist sogar eine schwimmende Lagerung des Ringwulstes in der Ringnut möglich, so daß zum Auslenken des Konatktelementes beim Einstecken eines nicht genau axial dazu ausgerichteten Gegenkontaktelementes überhaupt keine zusätzliche Steckkraft erforderlich ist, ein Vorteil, der insbesondere bei vielpoligen Steckverbindern den Steckvorgang ganz wesentlich erleichtert.
Der erfindungsgemäße Steckverbinder ist aber bei Bedarf ohne weiteres und vor allem ohne zusätzliche Maßnahmen wasserdicht herstellbar, wobei die jeweils gewünschte Dichtheit sehr einfach durch die Bemessung der gewölbten Flächen und ihrer Abstände sowie die Wahl eines hinsichtlich der Elastizität geeigneten Materials des Kontaktträgers realisierbar ist. Dabei bleibt auch bei hohen Anforderungen an die Dichtheit, also einem großen Anpreßdruck des Ringwulstes an die Wandung der Ringnut, das Kontaktelement leicht auslenkbar.This object is achieved by the characterizing features of claim 1.
By means of this design of the contact element and the contact chamber, which can be implemented in the simplest manner without special manufacturing costs, both the contact element and the contact carrier can be made in one piece, as a result of which the manufacturing and assembly costs are minimized. The contact elements are only pressed into the contact chambers and are detachably held therein. The strength of this holder is very easy to adapt to the requirements of the individual case by the choice of the dimensions, in particular the curved areas. In addition, an all-round deflection of the plug-in element with respect to the plug-in axis and thus an optimal compensation of positional tolerances of the contact elements to be plugged into one another is made possible, this area being extremely easy to select according to the respective requirements due to the contact chamber dimensions.
Due to the easy deflectability of the contact elements, only small insertion forces are required, even with a large offset of the quick-release axles. In addition, there is no point contact, rather the connector pins lie evenly on the socket walls, so that a low volume resistance and high contact reliability are guaranteed. If the connector does not have to be watertight, even a floating mounting of the annular bead in the annular groove is possible, so that no additional plug-in force is required at all for deflecting the contact element when inserting a counter-contact element that is not exactly axially aligned with it, an advantage which is particularly true with multipole connectors the plugging process made much easier.
The connector according to the invention can, however, be produced watertight easily and above all without additional measures, the desired tightness being very easy to achieve by dimensioning the curved surfaces and their spacing and by choosing a material of the contact carrier which is suitable with regard to the elasticity. The contact element remains easily deflectable even when there are high demands on the tightness, that is to say a large contact pressure of the annular bead against the wall of the annular groove.

Die in Anspruch 2 angegebene Lösung ist äquivalent zu derjenigen gemäß dem Anspruch 1 mit allen hierzu bereits genannten Vorteilen. Sie eignet sich insbesondere für Ausführungen mit nicht allzu tiefer Ringnut bzw. nicht zu starkem Ringwulst, bei denen die Stärke der Kontaktelemente ausreichend und die Entformung des einstückigen Kontaktträgers noch unproblematisch ist.The solution specified in claim 2 is equivalent to that according to claim 1 with all the advantages already mentioned for this. It is particularly suitable for designs with not too deep an annular groove or not too strong an annular bead, in which the thickness of the contact elements is sufficient and the demolding of the one-piece contact carrier is still unproblematic.

In den Unteransprüchen sind vorteilhafte Ausgestaltungen des erfindungsgemäßen Steckverbinders angegeben.
So sind zwar grundsätzlich alle möglichen Wölbungen (Konturen) von Ringwulst bzw. Ringnut denkbar; mit einer kugel- bzw. kugelschalenförmigen Ausbildung nach Anspruch 3 ist jedoch eine optimale Lagerung (Kugellager) erzielt, die einen großen allseitigen Auslenkbereich der Kontaktelemente in den Kontaktkammern, geringe Abmessungen und eine trotz leichter Einführbarkeit der Konaktelemente in die verrastete Betriebslage hohe Rastwirkung gewährleistet.Advantageous embodiments of the connector according to the invention are specified in the subclaims.
In principle, all possible curvatures (contours) of the ring bead or ring groove are conceivable; with a spherical or spherical shell-shaped design according to claim 3, however, optimal storage (ball bearing) is achieved, which ensures a large all-round deflection range of the contact elements in the contact chambers, small dimensions and a high locking effect despite easy insertion of the contact elements into the locked operating position.

Eine weitere, sehr vorteilhafte Möglichkeit, die Haltekraft der Kontaktelemente in der Lagerung sowie den Lagerdruck und damit die Beweglichkeit der Kontaktelemente den Bedürfnissen des jeweiligen Anwendungsfalles optimal anzupassen, ist dem Fachmann durch die freistehenden anschlußseitigen Endbereiche der Kammerwände (Dome) gemäß Anspruch 4 an die Hand gegeben. Für diese Anpassung steht eine entsprechende Wahl des Materials des Kontaktträgers, der Wandstärke und Länge der Dome sowie der Größe der aneinanderliegenden Flächen von Ringwulst und Ringnut zur Verfügung.Another very advantageous possibility of optimally adapting the holding force of the contact elements in the bearing as well as the bearing pressure and thus the mobility of the contact elements to the needs of the respective application is to the person skilled in the art through the free-standing connection-side end regions of the chamber walls (domes) given. A corresponding choice of the material of the contact carrier, the wall thickness and length of the domes and the size of the adjoining surfaces of the annular bead and annular groove are available for this adaptation.

Zur weiteren Verbesserung der Auslenkbarkeit des Kontaktelements und dessen möglichst genaue Ausrichtung in axialer Richtung des Gegenkontaktelements ist gemäß Anspruch 5 eine dünne Biegezone vorgesehen, die ihre Wirkung dann besonders entfaltet, wenn eine starke Verkantung von Kontaktelement und Gegenkontaktelement vorliegt.To further improve the deflectability of the contact element and its most accurate alignment in the axial direction of the counter-contact element, a thin bending zone is provided according to claim 5, which is particularly effective when there is a strong tilt of the contact element and counter-contact element.

In Figur 2 ist als Ausführungsbeispiel des erfindungsgemäßen Steckverbinders ein Schnitt durch einen Kontaktträgerbereich eines zwanzigpoligen Steckverbinders mit einer Kontaktkammer und darin eingeführten Kontaktelementen gezeigt.
Der in einem der Übersichtlichkeit halber nicht dargestellten Steckverbindergehäuse angeordnete Kontaktträger 21 weist zwanzig Kontaktkammern 22 auf, in deren jede von der Kabelanschlußseite her eine Kontaktbuchse 23 eingeführt und darin lösbar rastend gehalten wird. Die anschlußseitigen Endbereiche der Kontaktkammern 22 sind als freistehende Dome 24 ausgebildet, die am Ende einen Einführungstrichter 25 und daran anschließend eine Ringnut 26 mit kugelschalenförmiger Kontur aufweisen. Die steckseitigen Endbereiche der Kontaktkammern 22 weisen jeweils zur sicheren Einführung eines an der Spitze verrundeten Steckerstiftes 27 eine Einführungsschräge 28 und daran anschließend zu dessen Grobzentrierung einen verjüngten Abschnitt 29 auf. Die Kontaktbuchsen 23 bestehen aus einem rohrförmigen Kabelanschlußteil 30 zum Einlöten des abisolierten Endes einer Kabellitze, einem kugelförmigen Ringwulst 31, einem dünnen Biegeteil 32 sowie einer Steckbuchse 33, die aus zwei durch einen Längsschlitz 34 getrennten federnden Halbschalen 35 mit trichterförmiger Aufnahme 36 am freien Ende aufgebaut ist.FIG. 2 shows, as an exemplary embodiment of the connector according to the invention, a section through a contact carrier area of a twenty-pin connector with a contact chamber and contact elements inserted therein.
The contact carrier 21, which is arranged in a connector housing (not shown for the sake of clarity), has twenty contact chambers 22, into each of which a contact socket 23 is inserted from the cable connection side and detachably held therein. The connection-side end regions of the contact chambers 22 are designed as free-standing domes 24, which have an insertion funnel 25 at the end and then an annular groove 26 with a spherical shell-shaped contour. The plug-side end regions of the contact chambers 22 each have an insertion bevel 28 for the secure insertion of a plug pin 27 rounded at the tip and then a tapered section 29 for coarse centering thereof. The contact sockets 23 consist of a tubular cable connection part 30 for soldering the stripped end a cable strand, a spherical annular bead 31, a thin bent part 32 and a socket 33 which is constructed from two resilient half-shells 35 separated by a longitudinal slot 34 with a funnel-shaped receptacle 36 at the free end.

Die Montage des Steckverbinders besteht auf Grund des einteilig ausgeführten Kontaktträgers 21 lediglich darin, daß die Kontaktbuchse 23 bis zum Einrasten der Kugelschnappverbindung, d.h. des kugelförmigen Ringwulstes 31 in die Ringnut 26 mit daran angepaßter kugelschalenförmiger Kontur, in die Kontaktkammern 22 eingeführt werden. Der Steckverbinder ist somit in der Herstellung äußerst kostengünstig.The assembly of the connector is due to the one-piece contact carrier 21 only in that the contact socket 23 until the snap-in connection, i.e. of the spherical annular bead 31 into the annular groove 26 with an adapted spherical shell-shaped contour into which contact chambers 22 are inserted. The connector is therefore extremely inexpensive to manufacture.

Bei montiertem Steckverbinder ist der kugelförmige Ringwulst 31 in der kugelschalenförmigen Ringnut 26 nach allen Seiten frei schwenkbar, die Kontaktbuchse 23 also aus der axialer Lage auslenkbar, wobei der Auslenkbereich und damit der maximal ausgleichbare Steckachsenversatz von Kontaktbuchse 23 und Steckerstift 27 sehr einfach durch die Abmessungen der Kontaktkammer 22 bestimmbar ist.When the plug connector is installed, the spherical annular bead 31 can be freely pivoted in all directions in the spherical shell-shaped annular groove 26, that is to say the contact socket 23 can be deflected out of the axial position, the deflection range and thus the maximum compensatable thru-axis offset of the contact socket 23 and plug pin 27 being very simple due to the dimensions of the Contact chamber 22 can be determined.

Die Anordnung des Lagers 26, 31 am anschlußseitigen Endbereich der Kontaktkammern 22 bewirkt auch bei großer Auslenkung einen relativ kleinen Winkel zwischen der Buchsenachse 37 und der Stiftachse 38, so daß bereits dadurch eine geringe Einsteckkraft erforderlich ist. Diese wird noch weiter vermindert durch das dünne Biegeteil 32, welches bei nicht fluchtenden Achsen 37, 38 für eine zusätzliche Verkleinerung der genannten Winkels, d.h. Ausrichtung der Steckbuchse 33 in Richtung der Achse 38 des Steckerstiftes 27 sorgt.The arrangement of the bearing 26, 31 on the connection-side end region of the contact chambers 22 results in a relatively small angle between the socket axis 37 and the pin axis 38 even with a large deflection, so that a low insertion force is thereby required. This is further reduced by the thin bent part 32, which is used for non-aligned axes 37, 38 for an additional reduction of the mentioned angle, i.e. Alignment of the socket 33 in the direction of the axis 38 of the pin 27 ensures.

In Figur 2 ist der maximal mögliche Versatz der beiden Steckkontaktachsen 37, 38 dargestellt. Beim Zusammenstecken wird der Steckerstift 27 zunächst an der oberen Kante des verjüngten Abschnitts 29 der Kontaktkammer 22 geführt und gleitet dann mit seiner verrundeten Spitze voran in die trichterförmige Aufnahme 36 der Steckbuchse 33, die dabei durch Auslenkung, d.h. durch Drehung der Kontaktbuchse 23 im Lager 26, 31 und zusätzlich durch leichtes Verbiegen des Biegeteils 32 in eine mit dem Steckerstift 27 fluchtende Lage gebracht wird. Durch diesen praktisch vollständig einer schwimmenden Anordnung entsprechenden Aufbau sind nicht nur "Aufsitzer" wirksam vermieden, sondern auch die Einsteckkräfte sehr gering, was insbesondere für vielpolige Steckverbinder ein äußerst wichtiger Vorteil ist.FIG. 2 shows the maximum possible offset of the two plug contact axes 37, 38. When plugging together, the plug pin 27 is first guided on the upper edge of the tapered section 29 of the contact chamber 22 and then slides forward with its rounded tip into the funnel-shaped receptacle 36 of the socket 33, which is caused by deflection, ie by rotation of the contact socket 23 in the bearing 26 , 31 and is additionally brought into a position in alignment with the plug pin 27 by slightly bending the bent part 32. This structure, which corresponds practically completely to a floating arrangement, not only effectively avoids “riders”, but also the insertion forces very much low, which is an extremely important advantage, especially for multipole connectors.

Zweckmäßigerweise sind das Material des Kontaktträgers 21, die Länge und Wandstärke der Dome 24 sowie die Größe der aneinanderliegenden Lagerflächen und der Durchmesser des Ringwulstes 31 so gewählt, daß einerseits eine leichte Einführbarkeit der Konaktbuchsen 23 und zum anderen eine ausreichend hohe Abzugskraft der ohne besondere Mittel (z.B. Rastlappen) lösbar verrasteten Kontaktbuchsen 23 gewährleistet ist.
Zusätzlich ist mit diesen Parametern natürlich der Druck bestimmbar mit dem der Ringwulst 31 an der kugelschalenförmigen Fläche der Ringnut 26 anliegt. Für den Fall, daß keine Wasserdichtigkeit erforderlich ist, kann durch entsprechende Wahl der genannten Größen dieser Druck gleich Null sein, womit die Einsteckkräfte minimal sind, d.h. nur noch von dem erforderlichen Kontaktdruck abhängen, den die vorgespannten Steckbuchsen-Halbschalen 35 auf den jeweils eingeführten Steckerstift 27 ausüben. Eine derartige Ausführung ist daher ganz besonders für hochpolige Steckverbinder geeignet.
Soll indessen der Steckverbinder wasserdicht sein, so ist dies durch entsprechende Wahl der vorstehend aufgeführten Parameter für einen weiten Druckbereich möglich.The material of the contact carrier 21, the length and wall thickness of the domes 24 and the size of the abutting bearing surfaces and the diameter of the annular bead 31 are expediently chosen so that, on the one hand, the contact bushes 23 can be inserted easily and, on the other hand, a sufficiently high pull-off force without special means ( contact latches 23, which can be releasably locked, is ensured.
In addition, the pressure with which the annular bead 31 bears against the spherical shell-shaped surface of the annular groove 26 can of course also be determined using these parameters. In the event that water resistance is not required, this pressure can be zero by appropriate selection of the sizes mentioned, with which the insertion forces are minimal, ie only depend on the required contact pressure that the prestressed half-shells 35 on the respectively inserted plug pin 27 exercise. Such a design is therefore particularly suitable for multi-pin connectors.
However, if the connector is to be watertight, this can be done by selecting the parameters listed above for a wide pressure range.

Insgesamt ist mit der erfindungsgemäß ausgebildeten Steckkontakthalterung und -lagerung ein in Aufbau und Montage äußerst kostengünstiger Steckverbinder geschaffen, der alle Vorteile der schwimmenden Kontaktelementanordnung aufweist und überdies bei Bedarf ohne zusätzliche Maßnahmen wasserdicht ausführbar ist. Diese Vorteile kommen insbesondere bei vielpoligen Steckverbindern zum Tragen und sind gerade für Massenprodukte wie Steckverbinder von besonders weitreichender Bedeutung.Overall, the plug contact holder and bearing designed according to the invention provide a connector which is extremely inexpensive in terms of construction and assembly, which has all the advantages of the floating contact element arrangement and, moreover, can be carried out watertight without additional measures if required. These advantages are particularly noticeable with multi-pin connectors and are particularly important for mass products such as connectors.

Claims (5)

Steckverbinder mit einem Kontaktträger aus Isolierstoff und wenigstens einem in einer Kontaktkammer des Kontaktträgers angeordneten Steckkontakt,
dadurch gekennzeichnet, daß der Steckkontakt (23) im Betriebszustand mit einem nach außen gewölbten Ringwulst (31) in einer an dessen Kontur angepaßten Ringnut (26) im anschlußseitigen Endbereich der Kontaktkammer (22) gelagert ist.Plug connector with a contact carrier made of insulating material and at least one plug contact arranged in a contact chamber of the contact carrier,
characterized in that the plug contact (23) is mounted in the operating state with an outwardly arched annular bead (31) in an annular groove (26) adapted to its contour in the connection-side end region of the contact chamber (22). Steckverbinder mit einem Kontaktträger aus Isolierstoff und wenigstens einem in einer Kontaktkammer des Kontaktträgers angeordneten Steckkontakt,
dadurch gekennzeichnet, daß der Steckkontakt mit einer konkaven Ringnut in einem an deren Kontur angepaßten, im anschlußseitigen Endbereich der Kontaktkammer nach innen vorgewölbten Ringwulst der Kontaktkammer gelagert ist.Plug connector with a contact carrier made of insulating material and at least one plug contact arranged in a contact chamber of the contact carrier,
characterized in that the plug contact is mounted with a concave annular groove in an annular bead of the contact chamber which is matched to its contour and bulges inwards in the connection-side end region of the contact chamber. Steckverbinder nach Anspruch 1 oder 2, dadurch gekennzeichet, daß der Ringwulst (31) kugelförmig und die Ringnut (26) kugelschalenförmig ausgebildet sind.Connector according to claim 1 or 2, characterized in that the annular bead (31) is spherical and the annular groove (26) is spherical. Steckverbinder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der anschlußseitige Endbereich jeder Kontaktkammer (22) eine freistehende Wandung (24) aufweist, die in radialer Richtung wenigstens etwas verformbar ist.Connector according to one of claims 1 to 3, characterized in that the connection-side end region of each contact chamber (22) has a free-standing wall (24) which is at least somewhat deformable in the radial direction. Steckverbinder nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Kontaktelement (23) zwischen dem Ringwulst (31) und dem steckseitigen Ende eine dünne Biegezone (32) aufweist.Connector according to one of claims 1 to 4, characterized in that the contact element (23) has a thin bending zone (32) between the annular bead (31) and the plug-side end.
EP19920105677 1991-06-07 1992-04-02 Electrical connector Withdrawn EP0516937A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4118696 1991-06-07
DE4118696A DE4118696C2 (en) 1991-06-07 1991-06-07 Connectors

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EP0516937A2 true EP0516937A2 (en) 1992-12-09
EP0516937A3 EP0516937A3 (en) 1993-05-12

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NL9401537A (en) * 1994-09-22 1996-05-01 Framatome Connectors Belgium Connector system
US5653612A (en) * 1995-08-15 1997-08-05 Framatome Connectors Usa Inc. Electrical contact assembly with stabilizing contact mount
WO1998020584A1 (en) * 1996-11-04 1998-05-14 The Whitaker Corporation Receptacle contact position compliance feature
US5816864A (en) * 1995-09-21 1998-10-06 Framatome Connectors Usa Inc. Connector assembly

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GB2282013A (en) * 1993-08-30 1995-03-22 Petri Ag Current connector for a multicore cable
GB2282013B (en) * 1993-08-30 1997-09-03 Petri Ag A current connector for a multicore cable
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NL9401537A (en) * 1994-09-22 1996-05-01 Framatome Connectors Belgium Connector system
US5653612A (en) * 1995-08-15 1997-08-05 Framatome Connectors Usa Inc. Electrical contact assembly with stabilizing contact mount
US5816864A (en) * 1995-09-21 1998-10-06 Framatome Connectors Usa Inc. Connector assembly
WO1998020584A1 (en) * 1996-11-04 1998-05-14 The Whitaker Corporation Receptacle contact position compliance feature

Also Published As

Publication number Publication date
EP0516937A3 (en) 1993-05-12
DE4118696C2 (en) 1994-03-17
DE4118696A1 (en) 1992-12-10
US5334035A (en) 1994-08-02

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