EP2026417B1 - Electrical connector with hermaphroditic contact elements - Google Patents

Electrical connector with hermaphroditic contact elements Download PDF

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Publication number
EP2026417B1
EP2026417B1 EP08012583.4A EP08012583A EP2026417B1 EP 2026417 B1 EP2026417 B1 EP 2026417B1 EP 08012583 A EP08012583 A EP 08012583A EP 2026417 B1 EP2026417 B1 EP 2026417B1
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EP
European Patent Office
Prior art keywords
electrical connector
connector according
concave recess
leg
contact
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EP08012583.4A
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German (de)
French (fr)
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EP2026417A2 (en
EP2026417A3 (en
Inventor
Jürgen Lappöhn
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ERNI Production and Co KG GmbH
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ERNI Production and Co KG GmbH
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Publication of EP2026417A2 publication Critical patent/EP2026417A2/en
Publication of EP2026417A3 publication Critical patent/EP2026417A3/en
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Classifications

    • 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
    • H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716—Coupling device provided on the PCB
    • 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
    • H01R13/28—Contacts for sliding cooperation with identically-shaped contact, e.g. for hermaphroditic coupling devices

Definitions

  • the invention relates to an electrical connector with hermaphroditic contact elements according to the preamble of patent claim 1.
  • the invention relates to a plug with such connectors.
  • a generic electrical connector is for example from the DE 198 09 881 A1 out.
  • An advantage of such connector is not only in the ease of use and universal applicability, a great advantage of such connector is also the ease of manufacture. Only one type of contact element and one type of insulating housing must be made. Due to the bifurcated design of the contact elements such that the electrical contact element of a first connector opens fork-shaped to the electrical contact element of a second connector, and the inner surfaces of each two legs having fork at least partially enclose a leg of each associated other contact element, is in the inserted state given a defined safe and good electrical contact.
  • the US 3,011,143 discloses contact elements, which are not part of a connector, but serve the connection of individual lines. In this case as well, identically formed contact elements are arranged on the two conductors to be connected, which contact one another in the connected state.
  • the present invention is therefore the object of developing a generic connector such that on the one hand, the contact width (ie, the contact surface in the interconnected state of two electrical connectors) is increased and on the other hand, a holding force is mediated by the contact elements in the mated state of two electrical connectors ,
  • one of the two legs has a convex projecting shape and that the other of the two legs has a concave recess whose shape is adapted to the convex projecting shape, that in the connected state of two connectors, the convex projecting formation of the first connector at least partially positively abuts the concave recess of the second connector and vice versa, not only a substantial increase in the contact width is possible, because in the region of the positive engagement of the two contact elements together a flat contacting by forming an extended contact surface is achieved in a very advantageous manner.
  • the concave recess having legs is advantageously so wide that this flat surface in the connected, ie in the nested state of two connectors each on the flat surface of the corresponding contact element of the second connector is applied.
  • the adjacent planar surfaces in turn a large area and thus advantageous in terms of electrical connection contacting is achieved.
  • the leg having the convex projecting shape is curved in an arc shape.
  • this arcuate for example, by a substantially mirrored S-shaped configuration, a very advantageous spring effect is achieved.
  • the arcuate design is chosen so that the arc points away from each of the concave recess having contact element of the other connector and with this a void, for example, substantially in the form of an "O" includes. As a result, a particularly good spring action is achieved towards the concave recess.
  • the convex projecting formation is advantageously tulip-shaped. Due to the tulip-shaped shape is ensured when nesting that the contact element with the convex shape over the contact element with the concave recess during the insertion process to some extent slides, being initially pushed away during the insertion process by the tulip-shaped formation of the element with the concave shape to the outside , As a result, incorrect connections, which can lead to damage of the contact elements excluded. Due to the rounded shape of both the contact element with the convex, tulip-shaped formation and the contact element with the concave recess optimal sliding is possible and tilting, snagging and the like prevented very effectively.
  • the arcuately converging foot region of the two legs has a constriction at its transition to a Platinenlötan gleich Scheme.
  • a particularly good spring action of the two legs is achieved.
  • This spring action also allows a position tolerance compensation of the two connectors to each other.
  • the lower Lötan gleich Scheme is formed planar or linear and is preferably wider than the insulating.
  • each connector has at its free end faces guide elements for mutual centering at the mating.
  • the insulating housing on its side facing the solder connection area has fastening pins which are secured in corresponding openings of the board on which the plug should, fit.
  • the electrical connector is characterized in that only one type of electrical contact elements and only one type of insulating housing must be provided. It is particularly advantageous to manufacture the contact elements from a flat material, in particular by stamping. This is a decisive advantage, in particular with regard to mass production.
  • FIG Fig. 1 An embodiment of an electrical connector according to the invention with hermaphroditic contact elements, shown in FIG Fig. 1 , in an insulating, for example, plastic housing 300.
  • a plurality of adjacent, mounted in the housing 300 contact elements At their respective lower sides substantially flat and linear formed Lötan gleich Schemee 180 are provided, which are preferably formed wider than the insulating housing 300 itself and thus project laterally over the housing (see. Fig. 3 where two nested electrical connectors are shown).
  • planar or linear design has the decisive advantage of a large-scale solder joint, which ensures on the one hand a high mechanical strength, on the other hand, but also a good electrical conductivity.
  • the housing 300 in the upper region on a flat surface 310, which acts as a support surface of the projecting over the housing solder terminal portions 180 in the nested state of two connectors (see also Fig. 3 ).
  • guide elements 320 are further formed on the end faces for mutual centering in the connection of two such connectors.
  • the guide elements 320 are each tapered on their upper side viewed in the insertion direction, for example in the form of a truncated pyramid 325, in order to optimally achieve nesting, whereas on their one board or printed circuit board 401, 402 (FIG. Fig. 3 ) facing side 326 have flat surfaces in order to realize the largest possible contact surface.
  • the insulating housing 300 surrounds the entire, to be described below contact area of a nested connector pair, so that neither dirt can get into the contact area nor an electrical fault, such as a short circuit is possible.
  • the contact area is also electrically isolated in this way.
  • the insulating housing 300 on its respective Lötan gleich Schemeen 180 side facing mounting pins 340 which fit into corresponding openings in a board and there on the one hand to allow such a connector precise position, on the other hand fix this there ( Fig. 2 ).
  • Each contact element 100 is manufactured, for example, as a stamped part from a flat material and has a flat surface over the entire surface area (parallel to the plane of the drawing).
  • Each contact element 100 is formed by two differently shaped limbs 110 and 120, which are open in the form of a fork in each case to a second pair of legs of equal design, in order, as is shown in FIG Fig. 2 is shown - in the nested state to include such a pair of legs.
  • One of the two legs 110 has a convex projecting formation 111 in its upper region.
  • the other of the two legs 120 has a concave recess 121, the shape of which is adapted to the convexly projecting formation 111, that in the nested state of two such connectors, as in Fig. 2 is shown, the convex projecting formation 111 at least partially positive fit against the concave recess 121 and thus forms a flat contact.
  • the contact width ie the contact surface in comparison to known from the prior art and for example from the DE 198 09 881 A1 resulting connector allows such training of the two legs and an improved holding force with which the two connectors are held together.
  • the convex projecting formation 111 and the concave recess 121 form a latching connection.
  • This locking connection is achieved particularly advantageously in that the limb 110, on which the convexly protruding formation 111 is arranged, is curved in an arc shape, the arch 112 pointing away from the limb 120 with the concave recess 121 and together with it a void space 170 trains.
  • This arcuate design of the leg 120 allows a particularly good spring action, the holding force is increased, the leg 110 - as mentioned - is under a bias that is adjustable by choice of material, choice of bow and the like.
  • the leg 110 with the convexly projecting formation 111 is formed at its front end in a contact tulip-shaped 113 and rounded.
  • the leg 120 with the concave recess 121 is rounded at its top and has a rounded, bevelled or similarly profiled surface 123.
  • the contact tulip-shaped formation 113 of the first leg 110 and the rounded, bevelled or similarly formed surface 123 of the second leg 120 allow easy nesting of such two connectors without entanglements, clamps and the like. Rather, slide the two legs 110, 120 during the mating process along each other, the leg 110 when sliding over the rounded surface 123 slightly outwards, d. H. is pushed away from the leg 120, which is possible due to the biased bow 112 in an optimal manner, and then in the inserted state by the molding and the recess to each other to a certain extent to lock.
  • the legs 120 which have the concave recess 121 each have a flat surface 129 on their side facing away from the concave recess.
  • the contact elements 120 are formed so wide that in the nested state of two contact elements 100, the flat surfaces 129 of two adjacent legs 120 abut each other and thus form a flat contacting at this point.
  • Fig. 2 shows the fully nested condition of two such connectors that electrically connect and electrically contact two boards 401, 402 in this manner.
  • the planar-shaped solder connection regions 180 rest on corresponding contact elements of the circuit boards 401, 402 and are fastened there (by a solder connection).
  • Each fork-shaped contact leg pair has a constriction 190 at its lower side facing the solder connection region 180.
  • this training also allows a position tolerance compensation of the two connectors to each other.
  • outwardly directed arms 191 are provided having tabs 192 for securing the metallic contact elements 100 in the insulating housing 300 upon press-fitting of the contact elements 100 into the insulating housing 300. In this manner, the contact elements 100 are removably mounted and retained in the insulating housing.

Description

Die Erfindung betrifft einen elektrischen Steckverbinder mit hermaphroditischen Kontaktelementen nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an electrical connector with hermaphroditic contact elements according to the preamble of patent claim 1.

Ferner betrifft die Erfindung einen Stecker mit derartigen Steckverbindern.Furthermore, the invention relates to a plug with such connectors.

Stand der TechnikState of the art

Ein gattungsgemäßer elektrischer Steckverbinder geht beispielsweise aus der DE 198 09 881 A1 hervor. Ein Vorteil derartiger Steckverbinder liegt nicht nur in der einfachen Handhabung und universellen Einsetzbarkeit, ein großer Vorteil derartiger Steckverbinder ist auch die einfache Herstellung. Es muss immer nur ein Typ eines Kontaktelements sowie ein Typ eines Isoliergehäuses hergestellt werden. Durch die gabelförmige Ausbildung der Kontaktelemente derart, dass sich das elektrische Kontaktelement eines ersten Steckverbinders gabelförmig zu dem elektrischen Kontaktelement eines zweiten Steckverbinders öffnet, und die Innenflächen der jeweils zwei Schenkel aufweisenden Gabel zumindest teilweise einen Schenkel des jeweils zugehörigen anderen Kontaktelements umschließen, ist im gesteckten Zustand ein definiert sicherer und guter elektrischer Kontakt gegeben.A generic electrical connector is for example from the DE 198 09 881 A1 out. An advantage of such connector is not only in the ease of use and universal applicability, a great advantage of such connector is also the ease of manufacture. Only one type of contact element and one type of insulating housing must be made. Due to the bifurcated design of the contact elements such that the electrical contact element of a first connector opens fork-shaped to the electrical contact element of a second connector, and the inner surfaces of each two legs having fork at least partially enclose a leg of each associated other contact element, is in the inserted state given a defined safe and good electrical contact.

Bei dem aus der DE 198 09 881 A1 bekannten elektrischen Steckverbinder wird allerdings im gesteckten Zustand nur eine linien- oder punktförmige Kontaktierung vermittelt.In the from the DE 198 09 881 A1 known electrical connectors, however, mediates only a line or punctiform contact in the mated state.

Darüber hinaus vermitteln die Kontaktelemente des in der DE 198 09 881 A1 offenbarten Steckverbinders praktisch keine Haltekraft im verbundenen, d. h. ineinandergesteckten Zustand zweier Steckverbinder.In addition, the contact elements of the in the DE 198 09 881 A1 revealed connector virtually no holding force in the connected, ie nested state of two connectors.

Eine elektrische Verbindung für ein Kabel, genauer gesagt eine Litze, geht aus der WO 99/21256 hervor. Hier werden U-förmige Verbindungselemente verwendet, um eine Litze mit einer Befestigungslasche zu verbinden.An electrical connection for a cable, more precisely a stranded wire, goes out of the WO 99/21256 out. Here U-shaped fasteners are used to connect a strand with a fastening tab.

Aus der US 6,540,529 B1 geht eine elektrische Verbindereinheit hervor, bei der zwei Gehäuseteile durch ineinandergreifende, jeweils in beiden Gehäuseteilen angeordnete und gleich ausgebildete Vorsprünge miteinander verbunden werden.From the US 6,540,529 B1 shows an electrical connector unit, in which two housing parts are connected to each other by interlocking, each arranged in two housing parts and identically formed projections.

Die US 3,011,143 offenbart Kontaktelemente, die jedoch nicht Teil eines Steckverbinders sind, sondern der Verbindung einzelner Leitungen dienen. Auch hierbei sind jeweils an den beiden zu verbindenden Leitern gleich ausgebildete Kontaktelemente angeordnet, die im verbundenen Zustand aneinander anliegen.The US 3,011,143 discloses contact elements, which are not part of a connector, but serve the connection of individual lines. In this case as well, identically formed contact elements are arranged on the two conductors to be connected, which contact one another in the connected state.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen gattungsgemäßen Steckverbinder derart weiterzubilden, dass zum einen die Kontaktbreite (d. h. die Kontaktfläche im miteinander verbundenen Zustand zweier elektrischer Steckverbinder) erhöht wird und zum anderen eine Haltekraft durch die Kontaktelemente im gesteckten Zustand zweier elektrischer Steckverbinder vermittelt wird.The present invention is therefore the object of developing a generic connector such that on the one hand, the contact width (ie, the contact surface in the interconnected state of two electrical connectors) is increased and on the other hand, a holding force is mediated by the contact elements in the mated state of two electrical connectors ,

Vorteile der ErfindungAdvantages of the invention

Diese Aufgabe wird durch einen elektrischen Steckverbinder mit hermaphroditischen Kontaktelementen mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved by an electrical connector with hermaphroditic contact elements having the features of patent claim 1.

Dadurch, dass einer der beiden Schenkel eine konvex vorspringende Ausformung aufweist und dass der andere der beiden Schenkel eine konkave Ausnehmung aufweist, deren Gestalt so an die konvex vorspringende Ausformung angepasst ist, dass im verbundenen Zustand zweier Steckverbinder die konvex vorspringende Ausformung des ersten Steckverbinders wenigstens teilweise formschlüssig an der konkaven Ausnehmung des zweiten Steckverbinders anliegt und umgekehrt, ist nicht nur eine wesentliche Erhöhung der Kontaktbreite möglich, denn im Bereich des formschlüssigen Anliegens der beiden Kontaktelemente aneinander wird eine flächige Kontaktierung durch Ausbildung einer ausgedehnten Kontaktfläche auf sehr vorteilhafte Weise erzielt. Durch die konvex vorspringende Ausformung und die an sie angepasste konkave Ausnehmung wird darüber hinaus auch eine gewissermaßen Rastverbindung der Kontakte aneinander und damit eine wesentlich erhöhte Haltekraft vermittelt - im Gegensatz zu der nur aufgrund einer Vorspannung ausgebildeten und im Wesentlichen durch eine Reibungskraft vermittelten Haltefunktion der beiden Kontaktelemente aneinander gemäß der aus dem Stand der Technik bekannten Ausbildung. Durch das Zusammenwirken der konvex vorspringenden Ausformung und der konkaven Ausnehmung an jeweils sich gegenüberliegenden Schenkeln unterschiedlicher Steckverbinder werden demnach gleichzeitig zwei wesentliche Vorzüge erreicht, eine Verbesserung der Haltekraft und eine Erhöhung der Kontaktbreite. Der die konkave Ausnehmung aufweisende Schenkel weist zudem auf seiner der konkaven Ausnehmung abgewandten Seite eine ebene Fläche auf. Der die konkave Ausnehmung aufweisende Schenkel ist dabei vorteilhafterweise so breit ausgebildet, dass diese ebene Fläche im verbundenen, d. h. im ineinandergesteckten Zustand zweier Steckverbinder jeweils an der ebenen Fläche des entsprechenden Kontaktelements des zweiten Steckverbinders anliegt. Durch die so anliegenden ebenen Flächen wird wiederum eine großflächige und damit hinsichtlich der elektrischen Verbindung vorteilhafte Kontaktierung erreicht.Characterized in that one of the two legs has a convex projecting shape and that the other of the two legs has a concave recess whose shape is adapted to the convex projecting shape, that in the connected state of two connectors, the convex projecting formation of the first connector at least partially positively abuts the concave recess of the second connector and vice versa, not only a substantial increase in the contact width is possible, because in the region of the positive engagement of the two contact elements together a flat contacting by forming an extended contact surface is achieved in a very advantageous manner. In addition, a somewhat locking connection of the contacts to each other and thus a substantially increased holding force are imparted by the convexly projecting shape and the concave recess adapted to it-in contrast to the holding function of the two contact elements, which is formed only on the basis of a bias and essentially mediated by a frictional force to each other according to the training known from the prior art. Due to the interaction of the convex projecting shape and the concave recess on each opposite legs of different connectors thus two essential advantages are achieved simultaneously, an improvement in the holding force and an increase in the contact width. The leg having the concave recess also has a flat surface on its side facing away from the concave recess. The concave recess having legs is advantageously so wide that this flat surface in the connected, ie in the nested state of two connectors each on the flat surface of the corresponding contact element of the second connector is applied. By the adjacent planar surfaces in turn a large area and thus advantageous in terms of electrical connection contacting is achieved.

Weitere Vorteile und Merkmale der Erfindung sind Gegenstand der auf Anspruch 1 rückbezogenen Unteransprüche.Further advantages and features of the invention are the subject of the dependent claims on claim 1.

So ist beispielsweise der die konvex vorspringende Ausformung aufweisende Schenkel bogenförmig gebogen. Durch diese bogenförmige, beispielsweise durch eine im Wesentlichen gespiegelt S-förmige Ausbildung wird eine sehr vorteilhafte Federwirkung erzielt. Die bogenförmige Ausbildung ist dabei so gewählt, dass der Bogen jeweils von dem die konkave Ausnehmung aufweisenden Kontaktelement des anderen Steckverbinders weg weist und mit dieser einen Leerraum, beispielsweise im Wesentlichen in Form eines "O" einschließt. Hierdurch wird eine besonders gute Federwirkung hin zu der konkaven Ausnehmung erreicht.Thus, for example, the leg having the convex projecting shape is curved in an arc shape. By this arcuate, for example, by a substantially mirrored S-shaped configuration, a very advantageous spring effect is achieved. The arcuate design is chosen so that the arc points away from each of the concave recess having contact element of the other connector and with this a void, for example, substantially in the form of an "O" includes. As a result, a particularly good spring action is achieved towards the concave recess.

Im Hinblick auf ein leichtes und unproblematisches Ineinanderstecken ist die konvex vorspringende Ausformung vorteilhafterweise tulpenförmig ausgebildet. Aufgrund der tulpenförmigen Ausformung wird beim Ineinanderstecken sichergestellt, dass das Kontaktelement mit der konvexen Ausformung über das Kontaktelement mit der konkaven Ausnehmung während des Steckvorgangs gewissermaßen gleitet, wobei es während des Steckvorgangs durch die tulpenförmige Ausformung von dem Element mit der konkaven Ausformung zunächst nach außen weggedrückt wird. Hierdurch sind auch Fehlsteckungen, die zu Beschädigungen der Kontaktelemente führen können, ausgeschlossen. Aufgrund der abgerundeten Form sowohl des Kontaktelements mit der konvex vorspringenden, tulpenförmigen Ausformung als auch des Kontaktelements mit der konkaven Ausnehmung wird ein optimales Gleiten ermöglicht und ein Verkanten, Verhaken und dergleichen sehr effektiv verhindert.With regard to a simple and unproblematic nesting the convex projecting formation is advantageously tulip-shaped. Due to the tulip-shaped shape is ensured when nesting that the contact element with the convex shape over the contact element with the concave recess during the insertion process to some extent slides, being initially pushed away during the insertion process by the tulip-shaped formation of the element with the concave shape to the outside , As a result, incorrect connections, which can lead to damage of the contact elements excluded. Due to the rounded shape of both the contact element with the convex, tulip-shaped formation and the contact element with the concave recess optimal sliding is possible and tilting, snagging and the like prevented very effectively.

Gemäß einer vorteilhaften Ausführungsform ist vorgesehen, dass der bogenförmig zusammenlaufende Fußbereich der beiden Schenkel an seinem Übergang zu einem Platinenlötanschlussbereich eine Einschnürung aufweist. Hierdurch wird eine besonders gute Federwirkung der beiden Schenkel erreicht. Diese Federwirkung ermöglicht auch einen Positionstoleranzausgleich der beiden Steckverbinder zueinander.According to an advantageous embodiment it is provided that the arcuately converging foot region of the two legs has a constriction at its transition to a Platinenlötanschlussbereich. As a result, a particularly good spring action of the two legs is achieved. This spring action also allows a position tolerance compensation of the two connectors to each other.

Ebenfalls im Hinblick auf eine optimale und elektrisch einwandfreie Montage ist vorgesehen, dass der untere Lötanschlussbereich ebenflächig bzw. linienförmig ausgebildet ist und vorzugsweise breiter ausgebildet ist als das Isoliergehäuse.Also with regard to an optimal and electrically perfect mounting is provided that the lower Lötanschlussbereich is formed planar or linear and is preferably wider than the insulating.

Zur einfachen und trotzdem sicheren Befestigung der elektrischen Kontaktelemente in einem Isoliergehäuse ist gemäß einer vorteilhaften Ausführungsform vorgesehen, dass das Isoliergehäuse jedes Steckverbinders an seinen freien Stirnseiten Führungselemente zum gegenseitigen Zentrieren bei der Steckung aufweist.For simple yet secure attachment of the electrical contact elements in an insulating housing is provided according to an advantageous embodiment, that the insulating housing of each connector has at its free end faces guide elements for mutual centering at the mating.

Zur Ausbildung einer großen Auflagefläche im ineinandergesteckten Zustand zweier Steckverbinder ist ferner vorteilhafterweise vorgesehen, dass im oberen Bereich des Isoliergehäuses eine vornehmlich ebene Fläche außerhalb des Kontaktbereiches angeformt ist.To form a large bearing surface in the nested state of two connectors is also advantageously provided that in the upper region of the insulating housing a primarily flat surface is formed outside of the contact region.

Um eine einfache und schnelle Befestigung und insbesondere auch polrichtige Befestigung des Steckverbinders auf einer Platine zu ermöglichen, sieht eine vorteilhafte Ausführungsform vor, dass das Isoliergehäuse auf seiner dem Lötanschlussbereich zugewandten Seite Befestigungszapfen aufweist, die in entsprechende Öffnungen der Platine, auf der der Stecker befestigt werden soll, passen.In order to enable a simple and fast attachment and in particular also correct polarity mounting of the connector on a circuit board, provides an advantageous embodiment that the insulating housing on its side facing the solder connection area has fastening pins which are secured in corresponding openings of the board on which the plug should, fit.

Wie bereits eingangs erwähnt, zeichnet sich der elektrische Steckverbinder dadurch aus, dass nur ein Typ elektrischer Kontaktelemente und nur ein Typ eines Isoliergehäuses vorgesehen sein müssen. Besonders vorteilhaft ist es, die Kontaktelemente aus einem flächigen Material, insbesondere durch Stanzen zu fertigen. Dies ist insbesondere im Hinblick auf eine Massenproduktion von entscheidendem Vorteil.As already mentioned, the electrical connector is characterized in that only one type of electrical contact elements and only one type of insulating housing must be provided. It is particularly advantageous to manufacture the contact elements from a flat material, in particular by stamping. This is a decisive advantage, in particular with regard to mass production.

Beschreibung der ZeichnungDescription of the drawing

Weitere Vorteile und Merkmale der Erfindung sind Gegenstand der nachfolgenden Beschreibung sowie der zeichnerischen Darstellung eines Ausführungsbeispiels.Further advantages and features of the invention are the subject of the following description and the drawings of an embodiment.

In der Zeichnung zeigen:

Fig. 1
eine isometrische Darstellung eines von der Erfindung Gebrauch machenden Steckverbinders;
Fig. 2
eine Schnittdarstellung zweier ineinandergesteckter erfindungsgemäßer Steckverbinder und
Fig. 3
eine isometrische Darstellung zweier ineinandergesteckter Steckverbinder.
In the drawing show:
Fig. 1
an isometric view of a making use of the invention connector;
Fig. 2
a sectional view of two nested connector according to the invention and
Fig. 3
an isometric view of two nested connectors.

Ausführungsformen der ErfindungEmbodiments of the invention

Ein Ausführungsbeispiel eines erfindungsgemäßen elektrischen Steckverbinders mit hermaphroditischen Kontaktelementen, dargestellt in Fig. 1, weist in einem isolierenden, beispielsweise Kunststoffgehäuse 300, eine Mehrzahl von nebeneinanderliegenden, in dem Gehäuse 300 befestigten Kontaktelementen auf. An ihren jeweiligen Unterseiten sind im Wesentlichen ebenflächig und linienförmig ausgebildete Lötanschlussbereiche 180 vorgesehen, die bevorzugt breiter ausgebildet sind als das Isoliergehäuse 300 selbst und damit seitlich jeweils über das Gehäuse vorspringen (vergl. Fig. 3, wo zwei ineinandergesteckte elektrische Steckverbinder dargestellt sind).An embodiment of an electrical connector according to the invention with hermaphroditic contact elements, shown in FIG Fig. 1 , In an insulating, for example, plastic housing 300, a plurality of adjacent, mounted in the housing 300 contact elements. At their respective lower sides substantially flat and linear formed Lötanschlussbereiche 180 are provided, which are preferably formed wider than the insulating housing 300 itself and thus project laterally over the housing (see. Fig. 3 where two nested electrical connectors are shown).

Die ebenflächige bzw. linienförmige Ausbildung hat den entscheidenden Vorteil einer großflächigen Lötverbindung, die zum einen eine große mechanische Festigkeit, zum anderen aber auch eine gute elektrische Leitfähigkeit sicherstellt.The planar or linear design has the decisive advantage of a large-scale solder joint, which ensures on the one hand a high mechanical strength, on the other hand, but also a good electrical conductivity.

Wie in Fig. 1 dargestellt, weist das Gehäuse 300 im oberen Bereich eine ebene Fläche 310 auf, die als Auflagefläche der über das Gehäuse überstehenden Lötanschlussbereiche 180 im ineinandergesteckten Zustand zweier Steckverbinder fungiert (siehe auch Fig. 3).As in Fig. 1 shown, the housing 300 in the upper region on a flat surface 310, which acts as a support surface of the projecting over the housing solder terminal portions 180 in the nested state of two connectors (see also Fig. 3 ).

An dem Isoliergehäuse 300 sind ferner an den Stirnseiten Führungselemente 320 zum gegenseitigen Zentrieren bei der Steckung zweier derartiger Steckverbinder angeformt.On the insulating housing 300 guide elements 320 are further formed on the end faces for mutual centering in the connection of two such connectors.

Die Führungselemente 320 sind jeweils an ihrer in Steckrichtung betrachteten Oberseite konisch zulaufend ausgebildet, beispielsweise in Form eines Pyramidenstumpfs 325, um ein Ineinanderstecken auf optimale Weise zu erreichen, wohingegen sie auf ihrer einer Platine oder Leiterplatte 401, 402 (Fig. 3) zugewandten Seite ebene Flächen 326 aufweisen, um eine möglichst große Auflagefläche zu realisieren.The guide elements 320 are each tapered on their upper side viewed in the insertion direction, for example in the form of a truncated pyramid 325, in order to optimally achieve nesting, whereas on their one board or printed circuit board 401, 402 (FIG. Fig. 3 ) facing side 326 have flat surfaces in order to realize the largest possible contact surface.

Wie insbesondere der Fig. 3 zu entnehmen ist, umgibt das Isoliergehäuse 300 den gesamten, nachfolgend zu beschreibenden Kontaktbereich eines ineinandergesteckten Steckverbinderpaares, sodass weder Schmutz in den Kontaktbereich gelangen kann noch eine elektrische Störung, beispielsweise ein Kurzschluss möglich ist. Der Kontaktbereich ist auf diese Weise auch elektrisch isoliert.How the particular Fig. 3 can be seen, the insulating housing 300 surrounds the entire, to be described below contact area of a nested connector pair, so that neither dirt can get into the contact area nor an electrical fault, such as a short circuit is possible. The contact area is also electrically isolated in this way.

Wie ferner aus Fig. 2 und Fig. 3 ersichtlich ist, weist das Isoliergehäuse 300 auf seiner jeweils den Lötanschlussbereichen 180 zugewandten Seite Befestigungszapfen 340 auf, die in entsprechende Öffnungen in einer Platine passen und dort zum einen einen derartigen Steckverbinder präzise zu positionieren gestatten, zum anderen diesen dort auch fixieren (Fig. 2).As further out Fig. 2 and Fig. 3 it can be seen, the insulating housing 300 on its respective Lötanschlussbereichen 180 side facing mounting pins 340 which fit into corresponding openings in a board and there on the one hand to allow such a connector precise position, on the other hand fix this there ( Fig. 2 ).

Im Folgenden werden in Verbindung mit Fig. 2 die hermaphroditischen Kontaktelemente eines derartigen elektrischen Steckverbinders näher erläutert.The following will be in connection with Fig. 2 the hermaphroditic contact elements of such an electrical connector explained in more detail.

Jedes Kontaktelement 100 ist beispielsweise als Stanzteil aus einem flächigen Material gefertigt und weist über den gesamten Oberflächenbereich (parallel zur Zeichenebene) eine ebene Fläche auf. Jedes Kontaktelement 100 wird durch zwei unterschiedlich ausgebildete Schenkel 110 und 120 gebildet, die gabelförmig jeweils zu einem zweiten gleich ausgebildeten Schenkelpaar hin geöffnet sind, um - wie es in Fig. 2 gezeigt ist - im ineinandergesteckten Zustand ein solches Schenkelpaar aufzunehmen.Each contact element 100 is manufactured, for example, as a stamped part from a flat material and has a flat surface over the entire surface area (parallel to the plane of the drawing). Each contact element 100 is formed by two differently shaped limbs 110 and 120, which are open in the form of a fork in each case to a second pair of legs of equal design, in order, as is shown in FIG Fig. 2 is shown - in the nested state to include such a pair of legs.

Einer der beiden Schenkel 110 weist in seinem oberen Bereich eine konvex vorspringende Ausformung 111 auf. Der andere der beiden Schenkel 120 weist eine konkave Ausnehmung 121 auf, deren Gestalt so an die konvex vorspringende Ausformung 111 angepasst ist, dass im ineinandergesteckten Zustand zweier derartiger Steckverbinder, wie er in Fig. 2 dargestellt ist, die konvex vorspringende Ausformung 111 zumindest teilweise formschlüssig an der konkaven Ausnehmung 121 anliegt und so einen flächigen Kontakt ausbildet. Neben der Vergrößerung der Kontaktbreite, also der Kontaktfläche im Vergleich zum aus dem Stand der Technik bekannten und beispielsweise aus der DE 198 09 881 A1 hervorgehenden Steckverbinder ermöglicht eine solche Ausbildung der beiden Schenkel auch eine verbesserte Haltekraft, mit der die beiden Steckverbinder aneinander gehalten werden. Die konvex vorspringende Ausformung 111 und die konkave Ausnehmung 121 bilden nämlich gewissermaßen im weitesten Sinne in Zusammenwirkung mit der Federwirkung der vorgespannten Schenkel eine Rastverbindung aus. Diese Rastverbindung wird unter anderem auch dadurch besonders vorteilhaft erreicht, dass der Schenkel 110, an dem die konvex vorspringende Ausformung 111 angeordnet ist, bogenförmig gebogen ist, wobei der Bogen 112 jeweils von dem Schenkel 120 mit der konkaven Ausnehmung 121 weg weist und mit dieser zusammen einen Leerraum 170 ausbildet. Diese bogenförmige Ausbildung des Schenkels 120 ermöglicht eine besonders gute Federwirkung, die Haltekraft wird erhöht, wobei der Schenkel 110 - wie erwähnt - unter einer Vorspannung steht, die durch Materialwahl, Wahl des Bogens und dergleichen einstellbar ist.One of the two legs 110 has a convex projecting formation 111 in its upper region. The other of the two legs 120 has a concave recess 121, the shape of which is adapted to the convexly projecting formation 111, that in the nested state of two such connectors, as in Fig. 2 is shown, the convex projecting formation 111 at least partially positive fit against the concave recess 121 and thus forms a flat contact. In addition to the increase in the contact width, ie the contact surface in comparison to known from the prior art and for example from the DE 198 09 881 A1 resulting connector allows such training of the two legs and an improved holding force with which the two connectors are held together. Namely, the convex projecting formation 111 and the concave recess 121, to a certain extent in the broadest sense, in cooperation with the spring action of the pretensioned limbs, form a latching connection. This locking connection Among other things, this is achieved particularly advantageously in that the limb 110, on which the convexly protruding formation 111 is arranged, is curved in an arc shape, the arch 112 pointing away from the limb 120 with the concave recess 121 and together with it a void space 170 trains. This arcuate design of the leg 120 allows a particularly good spring action, the holding force is increased, the leg 110 - as mentioned - is under a bias that is adjustable by choice of material, choice of bow and the like.

Der Schenkel 110 mit der konvex vorspringenden Ausformung 111 ist an seinem vorderen Ende kontakttulpenförmig 113 und gerundet ausgebildet. Der Schenkel 120 mit der konkaven Ausnehmung 121 ist an seiner Oberseite abgerundet ausgebildet und weist eine abgerundete, angeschrägte oder auf ähnliche Weise profilierte Oberfläche 123 auf. Die kontakttulpenförmige Ausbildung 113 des ersten Schenkels 110 und die abgerundete, abgeschrägte oder ähnlich ausgebildete Oberfläche 123 des zweiten Schenkels 120 ermöglichen ein problemloses Ineinanderstecken derartiger zweier Steckverbinder ohne Verhakungen, Klemmungen und dergleichen. Vielmehr gleiten die beiden Schenkel 110, 120 während des Steckvorganges aneinander entlang, wobei der Schenkel 110 beim Gleiten über die abgerundete Fläche 123 leicht nach außen, d. h. von dem Schenkel 120 weggedrückt wird, was aufgrund des unter Vorspannung stehenden Bogens 112 auf optimale Weise möglich ist, um dann im gesteckten Zustand durch die Ausformung und die Ausnehmung aneinander gewissermaßen zu verrasten.The leg 110 with the convexly projecting formation 111 is formed at its front end in a contact tulip-shaped 113 and rounded. The leg 120 with the concave recess 121 is rounded at its top and has a rounded, bevelled or similarly profiled surface 123. The contact tulip-shaped formation 113 of the first leg 110 and the rounded, bevelled or similarly formed surface 123 of the second leg 120 allow easy nesting of such two connectors without entanglements, clamps and the like. Rather, slide the two legs 110, 120 during the mating process along each other, the leg 110 when sliding over the rounded surface 123 slightly outwards, d. H. is pushed away from the leg 120, which is possible due to the biased bow 112 in an optimal manner, and then in the inserted state by the molding and the recess to each other to a certain extent to lock.

Die die konkave Ausnehmung 121 aufweisenden Schenkel 120 weisen jeweils auf ihrer der konkaven Ausnehmung abgewandten Seite eine ebene Fläche 129 auf. Die Kontaktelemente 120 sind dabei so breit ausgebildet, dass im ineinandergesteckten Zustand zweier Kontaktelemente 100 die ebenen Flächen 129 zweier nebeneinanderliegender Schenkel 120 aneinander anliegen und so auch an dieser Stelle eine flächige Kontaktierung ausbilden.The legs 120 which have the concave recess 121 each have a flat surface 129 on their side facing away from the concave recess. The contact elements 120 are formed so wide that in the nested state of two contact elements 100, the flat surfaces 129 of two adjacent legs 120 abut each other and thus form a flat contacting at this point.

Fig. 2 zeigt den vollständig ineinandergesteckten Zustand zweier derartiger Steckverbinder, die zwei Platinen 401, 402 auf diese Weise miteinander elektrisch verbinden und elektrisch kontaktieren. Wie vorstehend bereits beschrieben, liegen die ebenflächig ausgebildeten Lötanschlussbereiche 180 auf entsprechenden Kontaktelementen der Platinen 401, 402 auf und sind dort befestigt (durch eine Lötverbindung). Jedes gabelförmige Kontaktschenkelpaar weist an seiner unteren, dem Lötanschlussbereich 180 zugewandten Seite eine Einschnürung 190 auf. Hierdurch wird eine besonders gute Federwirkung der beiden Schenkel 110, 120 erreicht. Darüber hinaus ermöglicht diese Ausbildung auch einen Positionstoleranzausgleich der beiden Steckverbinder zueinander. Fig. 2 shows the fully nested condition of two such connectors that electrically connect and electrically contact two boards 401, 402 in this manner. As already described above, the planar-shaped solder connection regions 180 rest on corresponding contact elements of the circuit boards 401, 402 and are fastened there (by a solder connection). Each fork-shaped contact leg pair has a constriction 190 at its lower side facing the solder connection region 180. As a result, a particularly good spring action of the two legs 110, 120 is achieved. In addition, this training also allows a position tolerance compensation of the two connectors to each other.

Beidseits der Einschnürung 190 sind bei der in Fig. 2 dargestellten Ausführungsform nach außen gerichtete Arme 191 vorgesehen, die Nasen 192 aufweisen zum Befestigen der metallischen Kontaktelemente 100 in dem Isoliergehäuse 300 beim Einpressen der Kontaktelemente 100 in das Isoliergehäuse 300. Auf diese Weise werden die Kontaktelemente 100 in dem Isoliergehäuse undemontierbar befestigt und gehalten.On both sides of the constriction 190 are at the in Fig. 2 In the illustrated embodiment, outwardly directed arms 191 are provided having tabs 192 for securing the metallic contact elements 100 in the insulating housing 300 upon press-fitting of the contact elements 100 into the insulating housing 300. In this manner, the contact elements 100 are removably mounted and retained in the insulating housing.

Claims (12)

  1. An electrical connector with hermaphroditic contact elements (100), having the following features:
    - the electrical contact element (100) of the connector is opened in a fork-like manner towards another electrical contact element (100);
    - the inner surfaces of the forks, which respectively comprise two legs (100, 120), enclose at least in part a leg (120, 110) of the respectively associated other contact element;
    - one of the two legs (110) comprises a convex protruding molding (111);
    - the other of the two legs (120) comprises a concave recess (121);
    - the shape of the concave recess (121) is adjusted to the convex protruding molding (111) in such a way that in the mated state of two connectors the convex protruding molding (111) of the first connector rests at least partly in an interlocking manner on the concave recess (121) of the other connector and vice versa, wherein the leg (120) comprising the concave recess (121) has a flat area (129) on its side facing away from the concave recess, and that the leg (120) comprising the concave recess (121) is arranged in such a wide way that in the mated state of two connectors the flat areas (129) of two such legs (120) respectively rest on each other by forming an electrical contact, characterized in that a base area of the two legs comprises a constriction (190) in its transitional area to a PCB solder connection area (180).
  2. An electrical connector according to claim 1, characterized in that the leg (110) comprising the convex protruding molding (111) is arranged in the manner of an arc.
  3. An electrical connector according to claim 1 or 2, characterized in that the leg (110) comprising the convex protruding molding (111) or the leg (120) comprising the concave recess (121) has a surface (113; 123) which is at least partly rounded off or beveled.
  4. An electrical connector according to claim 1, characterized in that the convex protruding molding (111) is shaped in the insertion direction in the manner of a tulip.
  5. An electrical connector according to claim 1, characterized in that outwardly directed arms (191) extend on either side of the constriction (190), said arms comprising noses (192) for fixing the metallic contacts during the pressing into an insulating housing (300).
  6. An electrical connector according to claim 1, characterized in that the bottom solder connection area (180) is arranged in a planar or linear way and is preferably arranged wider than the insulating housing (300), so that it protrudes laterally beyond said housing.
  7. An electrical connector according to claim 1, characterized in that the insulating housing (300) of each connector comprises guide elements (320) on its free face ends for the purpose of mutual centering during mating.
  8. An electrical connector according to one of the claims 5 to 7, characterized in that a mainly flat area (310) is arranged outside of the contact area in the upper region of the insulating housing (300).
  9. An electrical connector according to one of the claims 5 to 8, characterized in that the insulating housings (300) of a mated pair of connectors enclose the entire contact area of the contact elements (100).
  10. An electrical connector according to one of the claims 5 to 9, characterized in that the insulating housing (300) comprises fastening pins (340) on its side facing the solder connection area (180).
  11. An electrical connector according to one of the preceding claims, characterized in that the contact element (100) is made of a flat material, especially by punching.
  12. A plug, comprising a plurality of electrical connectors according to one of the claims 1 to 11 which are arranged adjacent to another in the insulating housing (300).
EP08012583.4A 2007-08-13 2008-07-11 Electrical connector with hermaphroditic contact elements Active EP2026417B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007038221A DE102007038221B3 (en) 2007-08-13 2007-08-13 Electrical plug connector, has concave recess, where shape of concave recess is adapted to convex protruding molding such that convex protruding molding of plug connector lies partly positively against concave recess of another connector

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EP2026417A2 EP2026417A2 (en) 2009-02-18
EP2026417A3 EP2026417A3 (en) 2013-01-23
EP2026417B1 true EP2026417B1 (en) 2014-08-27

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US (1) US7798836B2 (en)
EP (1) EP2026417B1 (en)
DE (1) DE102007038221B3 (en)
DK (1) DK2026417T3 (en)
ES (1) ES2524876T3 (en)

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DE102020134330A1 (en) 2020-09-29 2022-03-31 Harting Electric Gmbh & Co. Kg Contact element for circuit board connectors
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ES2524876T3 (en) 2014-12-15
DE102007038221B3 (en) 2008-10-16
US20090047816A1 (en) 2009-02-19
DK2026417T3 (en) 2014-12-15
EP2026417A2 (en) 2009-02-18
US7798836B2 (en) 2010-09-21
EP2026417A3 (en) 2013-01-23

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