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EP2595250B1 - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
EP2595250B1
EP2595250B1 EP11401637.1A EP11401637A EP2595250B1 EP 2595250 B1 EP2595250 B1 EP 2595250B1 EP 11401637 A EP11401637 A EP 11401637A EP 2595250 B1 EP2595250 B1 EP 2595250B1
Authority
EP
European Patent Office
Prior art keywords
plug
coupling
contact element
contact
plug 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.)
Active
Application number
EP11401637.1A
Other languages
German (de)
French (fr)
Other versions
EP2595250A1 (en
Inventor
Wolf Neumann-Henneberg
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.)
Kassnell-Henneberg Bruno
Neumann-Henneberg Karl
Neumann-Henneberg Uwe
Original Assignee
Kassnell-Henneberg Bruno
Neumann-Henneberg Karl
Neumann-Henneberg Uwe
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 Kassnell-Henneberg Bruno, Neumann-Henneberg Karl, Neumann-Henneberg Uwe filed Critical Kassnell-Henneberg Bruno
Priority to EP11401637.1A priority Critical patent/EP2595250B1/en
Priority to US13/539,811 priority patent/US8579653B2/en
Publication of EP2595250A1 publication Critical patent/EP2595250A1/en
Application granted granted Critical
Publication of EP2595250B1 publication Critical patent/EP2595250B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R13/46—Bases; Cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets

Definitions

  • the invention relates to an electrical connector having the features of the preamble of claim 1.
  • the invention is particularly intended for releasable electrical connections for voltages of over 1,000 volts and currents of a few hundred amperes.
  • the connector can also be used instead of cable lugs or screw connections.
  • the patent DE 623 128 discloses an electrical connector with a pin-shaped plug and a sleeve-shaped coupling, which surrounds the plug with an annular gap in the plugged state, ie plugged into the connector plug.
  • a stack of flat or disc-shaped contact elements is arranged, which consist of electrically conductive material, in particular of metal.
  • the contact elements of sheet metal punched perforated discs with an inner annulus in the middle and two circular-arc spring arms that surround the annulus with a radial distance. One ends of the spring arms are free, at the other ends, the spring arms go over in one piece into the inner annulus.
  • the spring arms lie with bias on the inside of the sleeve-shaped coupling and act on the inner annulus elastically resiliently radially, so that the circular ring rests eccentrically in the coupling.
  • the stacked arranged in the sleeve-shaped coupling contact elements are alternately arranged rotated by 180 ° to each other, so that their inner rings are arranged alternately opposite eccentric in the coupling.
  • the plug which has a slightly smaller diameter than the rings of the contact elements, centers the inner rings of the contact elements, so that they rest elastically resiliently on the plug.
  • the spring arms of the disk-shaped contact elements of the known electrical connector build a contact pressure on both the sleeve-shaped coupling and the pin-shaped connector, which ensures a reliable electrically conductive connection of the connector with the coupling via the contact elements.
  • the contact elements of the known electrical connector are bent from wire, they have an open, d. H. interrupted at one point inner ring, which is bent at the sides of the opening of the ring by 180 ° outwards to circular-arc spring arms which surround the broken inner ring with a radial distance outside.
  • the object of the invention is to propose an electrical connector of the type described above, the contact elements are better secured against mechanical overload.
  • the electrical connector according to the invention has a pin-shaped plug and a sleeve-shaped coupling, which surrounds the plug with clearance in the plugged state, ie plugged into the connector plug.
  • an electrically conductive contact element is arranged, which has the shape of an open, ie interrupted at one point ring. In the circumferential direction, the contact element extends over more than 180 °, in particular it extends over almost the full circumference and has only a small opening.
  • the contact element springs transversely to a direction of insertion of the plug into the coupling, which is synonymous with a plugging of the coupling on the plug. In the inserted state, the contact element is elastically resilient and thereby with a bias both inside the plug and on the outside of the coupling and thus connects the plug and the coupling electrically conductive with each other.
  • the contact element according to the invention has cusps projecting inwards and outwards, by which is meant a protrusion protruding inwards or outwards over a generatrix.
  • the cusps projecting inwards are in contact with the plug. Due to the bias of the resilient contact element, the protruding inwardly projecting bumps with a bias on the plug. In this way, the invention achieves a reliable, good electrical connection between the plug and the contact element with low electrical resistance.
  • the protruding outward from the contact element bumps are not on the sleeve, but there is a gap between the outwardly protruding humps of the contact element and the clutch, even when plugged into the connector plug.
  • the contact element is located at a location other than the protruding outwardly projecting bumps to electrically connect the contact element with the coupling.
  • the protruding humps secure the contact element against mechanical overstress.
  • the protruding outward humps limit deformation of the resilient contact element to the outside and prevent in this way a plastic deformation and a break in a continuous load.
  • the contact element is mechanically stressed by vibrations, for example when driving, or by misalignment of the plug in the clutch, d. H. a radial and / or angular offset.
  • the plug and the coupling have a circular cross-section and the contact element in the form of an interrupted annulus.
  • the circular cross section of the plug and the coupling applies to a plug-in area, ie the area in which the contact element is in the plugged state.
  • the circular cross-section refers to an inner circumference, outside the coupling does not have to be circular.
  • Other Cross-sectional and annular shapes for example a round, but not circular, for example elliptical or oval cross-section, or a polygonal cross-section or a cross-section with arcuate and straight sections are not provided per se, but also not excluded.
  • the connector has a plurality of stacked contact elements.
  • the contact elements are arranged adjacent to one another in the insertion direction of the plug in the coupling one behind the other. It is also conceivable an arrangement of the contact elements at a distance from each other.
  • the contact elements can be arranged congruent or mutually rotated. Multiple contact elements increase a maximum possible current through the connector and reduce electrical resistance between the plug and the coupling.
  • An embodiment of the invention provides transverse supports of the plug in the coupling on both sides of the contact element.
  • the plug In the inserted state, the plug is supported between an opening and the contact element and between a free end of the plug and the contact element in the transverse direction in the coupling.
  • the transverse supports can be designed in the manner of sockets. They hold the plug in an intended position aligned in the coupling. They avoid relative movements between the plug and the coupling transversely to the direction of insertion and thereby counteract a radial and an angular offset of the plug in the coupling. This measure also serves to secure the contact element against mechanical overload and is suitable for improving the electrical connection between the plug and the coupling by ensuring, as already stated, the intended position of the plug in the coupling.
  • An embodiment of the invention provides that the inwardly projecting bumps are arranged offset to a median plane of the annular contact element.
  • the bumps are offset to the same side of the median plane, preferably in the direction of the open position of the annular contact element. Due to the resilient installation of the contact element on the plug causing the Placed center plane offset, inwardly projecting hump a radial force which acts on the contact element transversely in one direction. The contact element is thereby pressed into an intended position on the plug and in the coupling.
  • the protruding outward cusps are arranged in an embodiment of the invention, the inwardly projecting protuberances opposite to support the contact element at the points against mechanical overload in the sleeve-shaped coupling, where the plug exerts a force on the contact element.
  • the contact element has two outer and two inner bumps.
  • the contact element can be arranged on the plug.
  • it is arranged in the coupling, wherein the arrangement of the contact element on the plug or in the coupling refers to a disconnected state, because in the inserted state, the contact element is arranged both on the plug and in the coupling.
  • the inventive electrical connector 1 shown in the drawing has a cylindrical pin-shaped plug 2 and a sleeve-shaped cylindrical coupling 3.
  • the plug 2 has at a free front end a cylindrical support portion 4, then a frusto-conical expansion portion 5 and then to this again a cylindrical contact portion 6.
  • the plug 2 has a radial flange 7, from which a hollow cylindrical collar 8 projects in the direction of the free end of the plug 2.
  • the collar 8 encloses the contact portion 6 with a radial annular space, the collar 8 is lower in the axial direction than the contact portion 6 is long.
  • a cable connection 9 connects to connect the plug 2 with a cable, not shown, or other current conductor.
  • the cable can be connected in a conventional manner by welding, crimping, crimping, screw terminals, etc. to the plug 2, the formation of the cable connection 9 is not essential to the invention.
  • the sleeve-shaped coupling 3 has a cylindrical diameter-stepped receiving space 10 for the plug 2. Following an opening, the receiving space 10 of the coupling 3 has a contact portion 11 which tapers with an annular support step 12 to a cylindrical intermediate portion 13, which in turn with an annular step 14 to a cylindrical support portion 15 at the end of the receiving space formed as a blind hole 10 rejuvenated.
  • the coupling 3 has a cable connection 16 for connection to a cable, not shown, or another electrical conductor, such as the plug 2. On the configuration of the cable connection 16 is not important for the invention.
  • the coupling 3 tapers externally with an annular step to a cylindrical collar 17 whose outer diameter coincides with an inner diameter of the collar 8 of the plug 2.
  • a diameter of the support portion 4 of the plug 2 coincides with an inner diameter of the support portion 15 of the receiving space 10 of the clutch 3.
  • the support portions 4 of the plug 2 and 15 of the coupling 3 form a transverse support, and also the collar 17 of the coupling 3 and the collar 8 of the plug 2, the plug 2, when it is plugged into the coupling 3, transversely or radially in the clutch 3 is supported, ie the connector 2 and the clutch 3 coaxially aligned and keeps aligned.
  • a misalignment so a transverse or radial offset and an angular offset of the connector 2 to the clutch 3 by the transverse supports 4, 15; 8, 17 avoided.
  • the intermediate portion 13 of the receiving space 10 of the coupling 3 has a slightly larger diameter than the contact portion 6 of the plug 2, there is no contact of the contact portion 6 of the plug 2 with the intermediate portion 13 of the receiving space 10 of the coupling 3 is provided, in the inserted state in the intermediate section 13 is immersed. However, such a contact is harmless.
  • the contact portion 11 of the receiving space 10 of the coupling 3 has a larger diameter than the contact portion 6 of the plug 2, so that there is an annular gap 18 between the coupling 3 and the plug 2 when the plug 2 is inserted into the coupling 3.
  • the contact elements 19 can also be considered as slats.
  • One of the contact elements 19 is in FIG. 3 to see in view.
  • the contact elements 19 are punched flat sheet metal annular disks, they are almost, in the embodiment, however, not exactly, circular.
  • the contact elements 19 have at one point of their circumference an opening 20, that is, they have the shape of broken Rings.
  • the same projections 22 have the contact elements 19 of the opening 20 opposite.
  • the contact elements 19 are elastic, they spring in the radial direction, ie transversely to a direction of insertion of the plug 2 in the clutch 3.
  • the contact elements 19 are elastic radially compressed, so that their projections 21, 22 resiliently bear against the contact portion 11 of the receiving space 10 of the clutch 3 with a bias inside. In this way results in a good electrical connection between the coupling 3 and the contact elements 19 with low electrical resistance.
  • the contact elements 19 have two inwardly projecting and here as bumps 23 projections which are located approximately in a middle between the outwardly projecting projections 21 on the opening 20 and the opposing, outwardly projecting projections 22 of the contact elements 19 ,
  • the inwardly projecting bumps 23 are not exactly in the middle, but they are slightly offset in the direction of the opening 20.
  • the offset of the bumps 23 from a median plane in the direction of the opening 20 of the contact elements 19 in the example shown is approximately between 10 and 15 °.
  • the contact elements 19 are based on the support stage 12 in the receiving space 10 of the clutch 3.
  • a arranged in the mouth of the receiving space 10 of the clutch 3 and fixed orifice plate 25 holds the contact elements 19 in the contact portion 11 of the receiving space 10 of the coupling third
  • transverse supports of the plug 2 in the coupling 3, which are formed by the support sections 4, 15 and the collars 8, 17 of the plug 2 and the coupling 3, are located on both sides of the contact elements 19, ie axially in front of and behind the contact elements 19th
  • the support portion 4 of the plug 2 passes through the contact elements 19, then spreads or widens the frustoconical expansion portion 5 of the plug 2, the contact elements 19 elastically and then passes the cylindrical contact portion 6 of the plug. 2 between the contact elements 19.
  • the contact elements 19 abut with their inwardly projecting bumps 23 on the plug 2, so that their approximately semicircular arc-shaped portions between the opposite, outwardly projecting projections 21, 22 are pressed elastically outward.
  • the approximately semicircular arcs between the opposing protrusions 21, 22 projecting outward from the contact elements 19 are pressed approximately elastically outwards by the plug 2 in their centers, namely where the inwardly projecting protuberances 23 are located.
  • the bumps 23 are therefore with a bias on the contact portion 6 of the plug 2, whereby a good electrical conductive connection between the contact elements 19 and the plug 2 is ensured with low electrical resistance.
  • the contact elements 19 Due to their offset in the direction of the opening 20 of the contact elements 19 and the bias with which the inwardly projecting bumps 23 of the contact elements 19 abut the plug 2, a radial force acts transversely to the plug 2, the contact elements 19 in a defined position to the plug. 2 suppressed; the contact elements 19 are located opposite to their opening 20 at the contact portion 6 of the plug 2.
  • the protruding outward bumps 24 of the contact elements 19 are not applied to the coupling 3, between them there is a gap d, even if the plug 2 is inserted into the coupling 3, that is, the contact portion 6 of the plug 2 is in the contact elements 19 and they on the inwardly projecting humps 23 elastically presses outward.
  • the gap d is in FIG. 2 drawn exaggeratedly large, it is a few 1/100 mm, for example about 5/100 mm at a diameter of the contact portion 6 of the connector 2 of 8 mm.
  • the gap d increases or decreases, but not necessarily proportional. Also, it is not excluded that the gap d at different diameters of the contact portion 6 of the connector 2 is the same size.
  • the protruding outwardly projecting bumps 24 limit by conditioning on the contact portion 11 of the receiving space 10 of the clutch 3 a maximum possible deformation of the contact elements 19.
  • the gap d is chosen so narrow that a plastic deformation of the contact elements 19 is excluded.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

Die Erfindung betrifft einen elektrischen Steckverbinder mit den Merkmalen des Oberbegriffs des Anspruchs 1. Die Erfindung ist insbesondere für lösbare elektrische Verbindungen für Spannungen von über 1.000 Volt und Ströme von einigen Hundert Ampere vorgesehen. Der Steckverbinder ist auch anstelle von Kabelschuhen oder Schraubverbindungen verwendbar.The invention relates to an electrical connector having the features of the preamble of claim 1. The invention is particularly intended for releasable electrical connections for voltages of over 1,000 volts and currents of a few hundred amperes. The connector can also be used instead of cable lugs or screw connections.

Die Patentschrift US 5,769,671 offenbart einen elektrischen Steckverbinder wie in der Präambel des Anspruchs 1 beschrieben.The patent US 5,769,671 discloses an electrical connector as described in the preamble of claim 1.

Die Patentschrift DE 623 128 offenbart einen elektrischen Steckverbinder mit einem stiftförmigen Stecker und einer hülsenförmigen Kupplung, die in gestecktem Zustand, d. h. bei in die Kupplung gestecktem Stecker, den Stecker mit einem ringförmigen Zwischenraum umschließt. In dem Zwischenraum ist ein Stapel flacher bzw. scheibenförmiger Kontaktelemente angeordnet, die aus elektrisch leitendem Material, insbesondere aus Metall, bestehen. In einem Ausführungsbeispiel sind die Kontaktelemente aus Blech gestanzte Lochscheiben mit einem inneren Kreisring in ihrer Mitte und zwei kreisbogenförmigen Federarmen, die den Kreisring mit radialem Abstand umschließen. Eine Enden der Federarme sind frei, an den anderen Enden gehen die Federarme einstückig in den inneren Kreisring über. Die Federarme liegen mit Vorspannung innen an der hülsenförmigen Kupplung an und beaufschlagen den inneren Kreisring elastisch federnd radial, so dass der Kreisring exzentrisch in der Kupplung einliegt. Die gestapelt in der hülsenförmigen Kupplung angeordneten Kontaktelemente sind abwechselnd um 180° gedreht zueinander angeordnet, so dass ihre inneren Ringe abwechselnd entgegengesetzt exzentrisch in der Kupplung angeordnet sind. Der Stecker, der einen etwas kleineren Durchmesser als die Ringe der Kontaktelemente aufweist, zentriert die inneren Ringe der Kontaktelemente, so dass diese elastisch federnd am Stecker anliegen. Auf diese Weise bauen die Federarme der lochscheibenförmigen Kontaktelemente des bekannten elektrischen Steckverbinders einen Kontaktdruck sowohl an der hülsenförmigen Kupplung als auch am stiftförmigen Stecker auf, der eine zuverlässige elektrisch leitende Verbindung des Steckers mit der Kupplung über die Kontaktelemente gewährleistet.The patent DE 623 128 discloses an electrical connector with a pin-shaped plug and a sleeve-shaped coupling, which surrounds the plug with an annular gap in the plugged state, ie plugged into the connector plug. In the intermediate space, a stack of flat or disc-shaped contact elements is arranged, which consist of electrically conductive material, in particular of metal. In one embodiment, the contact elements of sheet metal punched perforated discs with an inner annulus in the middle and two circular-arc spring arms that surround the annulus with a radial distance. One ends of the spring arms are free, at the other ends, the spring arms go over in one piece into the inner annulus. The spring arms lie with bias on the inside of the sleeve-shaped coupling and act on the inner annulus elastically resiliently radially, so that the circular ring rests eccentrically in the coupling. The stacked arranged in the sleeve-shaped coupling contact elements are alternately arranged rotated by 180 ° to each other, so that their inner rings are arranged alternately opposite eccentric in the coupling. The plug, which has a slightly smaller diameter than the rings of the contact elements, centers the inner rings of the contact elements, so that they rest elastically resiliently on the plug. In this way, the spring arms of the disk-shaped contact elements of the known electrical connector build a contact pressure on both the sleeve-shaped coupling and the pin-shaped connector, which ensures a reliable electrically conductive connection of the connector with the coupling via the contact elements.

In einem zweiten Ausführungsbeispiel sind die Kontaktelemente des bekannten elektrischen Steckverbinders aus Draht gebogen, sie weisen einen offenen, d. h. an einer Stelle unterbrochenen inneren Ring auf, der an Seiten der Öffnung des Rings um 180° nach außen zu kreisbogenförmigen Federarmen gebogen ist, die den unterbrochenen inneren Ring mit radialem Abstand außen umschließen.In a second embodiment, the contact elements of the known electrical connector are bent from wire, they have an open, d. H. interrupted at one point inner ring, which is bent at the sides of the opening of the ring by 180 ° outwards to circular-arc spring arms which surround the broken inner ring with a radial distance outside.

Aufgabe der Erfindung ist es, einen elektrischen Steckverbinder der vorstehend erläuterten Art vorzuschlagen, dessen Kontaktelemente besser gegen eine mechanische Überlastung gesichert sind.The object of the invention is to propose an electrical connector of the type described above, the contact elements are better secured against mechanical overload.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Der erfindungsgemäße elektrische Steckverbinder weist einen stiftförmigen Stecker und eine hülsenförmige Kupplung auf, die in gestecktem Zustand, also bei in die Kupplung gestecktem Stecker, den Stecker mit Zwischenraum umschließt. In dem Zwischenraum ist ein elektrisch leitendes Kontaktelement angeordnet, das die Form eines offenen, d. h. an einer Stelle unterbrochenen Rings aufweist. In Umfangsrichtung erstreckt sich das Kontaktelement über mehr als 180°, insbesondere erstreckt es sich über nahezu den vollen Umfang und weist eine nur kleine Öffnung auf. Das Kontaktelement federt quer zu einer Steckrichtung des Steckers in die Kupplung, was gleichbedeutend mit einem Stecken der Kupplung auf den Stecker ist. In gestecktem Zustand liegt das Kontaktelement elastisch federnd und dadurch mit einer Vorspannung sowohl innen an dem Stecker als auch außen an der Kupplung an und verbindet somit den Stecker und die Kupplung elektrisch leitend miteinander.This object is solved by the features of claim 1. The electrical connector according to the invention has a pin-shaped plug and a sleeve-shaped coupling, which surrounds the plug with clearance in the plugged state, ie plugged into the connector plug. In the intermediate space, an electrically conductive contact element is arranged, which has the shape of an open, ie interrupted at one point ring. In the circumferential direction, the contact element extends over more than 180 °, in particular it extends over almost the full circumference and has only a small opening. The contact element springs transversely to a direction of insertion of the plug into the coupling, which is synonymous with a plugging of the coupling on the plug. In the inserted state, the contact element is elastically resilient and thereby with a bias both inside the plug and on the outside of the coupling and thus connects the plug and the coupling electrically conductive with each other.

Das erfindungsgemäße Kontaktelement weist nach innen und nach außen abstehende Höcker auf, womit ein nach innen bzw. nach außen über eine Mantellinie vorstehender Vorsprung gemeint ist. In gestecktem Zustand liegen die nach innen abstehenden Höcker am Stecker an. Aufgrund der Vorspannung des federnden Kontaktelements liegen die nach innen abstehenden Höcker mit einer Vorspannung am Stecker an. Auf diese Weise erreicht die Erfindung eine zuverlässige, elektrisch gut leitende Verbindung zwischen dem Stecker und dem Kontaktelement mit niedrigem elektrischem Widerstand.The contact element according to the invention has cusps projecting inwards and outwards, by which is meant a protrusion protruding inwards or outwards over a generatrix. When plugged in, the cusps projecting inwards are in contact with the plug. Due to the bias of the resilient contact element, the protruding inwardly projecting bumps with a bias on the plug. In this way, the invention achieves a reliable, good electrical connection between the plug and the contact element with low electrical resistance.

Die nach außen von dem Kontaktelement abstehenden Höcker liegen nicht an der Hülse an, sondern es besteht ein Spalt zwischen den nach außen abstehenden Höckern des Kontaktelements und der Kupplung, und zwar auch bei in die Kupplung gestecktem Stecker. In der hülsenförmigen Kupplung liegt das Kontaktelement an anderer Stelle als den nach außen abstehenden Höckern an, um das Kontaktelement elektrisch leitend mit der Kupplung zu verbinden. Die nach außen abstehenden Höcker sichern das Kontaktelement gegen eine mechanische Überbeanspruchung. Die nach außen abstehenden Höcker begrenzen eine Verformung des federnden Kontaktelements nach außen und verhindern auf diese Weise eine plastische Verformung und einen Bruch bei einer Dauerbelastung. Mechanisch beansprucht wird das Kontaktelement durch Vibrationen, beispielsweise im Fahrbetrieb, oder durch Fluchtungsfehler des Steckers in der Kupplung, d. h. einen Radial- und/oder Winkelversatz.The protruding outward from the contact element bumps are not on the sleeve, but there is a gap between the outwardly protruding humps of the contact element and the clutch, even when plugged into the connector plug. In the sleeve-shaped coupling, the contact element is located at a location other than the protruding outwardly projecting bumps to electrically connect the contact element with the coupling. The protruding humps secure the contact element against mechanical overstress. The protruding outward humps limit deformation of the resilient contact element to the outside and prevent in this way a plastic deformation and a break in a continuous load. The contact element is mechanically stressed by vibrations, for example when driving, or by misalignment of the plug in the clutch, d. H. a radial and / or angular offset.

Vorzugsweise weisen der Stecker und die Kupplung einen kreisförmigen Querschnitt und das Kontaktelement die Form eines unterbrochenen Kreisrings auf. Der kreisförmige Querschnitt des Steckers und der Kupplung gilt für einen Steckbereich, d. h. den Bereich, in dem sich in gestecktem Zustand das Kontaktelement befindet. Für die Kupplung bezieht sich der kreisförmige Querschnitt auf einen Innenumfang, außen muss die Kupplung nicht kreisförmig sein. Andere Querschnitts- und Ringformen, beispielsweise ein runder, allerdings nicht kreisrunder, beispielsweise elliptischer oder ovaler Querschnitt, oder ein mehrkantförmiger Querschnitt oder ein Querschnitt mit bogenförmigen und geraden Abschnitten sind zwar an sich nicht vorgesehen, allerdings auch nicht ausgeschlossen.Preferably, the plug and the coupling have a circular cross-section and the contact element in the form of an interrupted annulus. The circular cross section of the plug and the coupling applies to a plug-in area, ie the area in which the contact element is in the plugged state. For the coupling the circular cross-section refers to an inner circumference, outside the coupling does not have to be circular. Other Cross-sectional and annular shapes, for example a round, but not circular, for example elliptical or oval cross-section, or a polygonal cross-section or a cross-section with arcuate and straight sections are not provided per se, but also not excluded.

In bevorzugter Ausgestaltung der Erfindung weist der Steckverbinder mehrere als Stapel angeordnete Kontaktelemente auf. Die Kontaktelemente sind aneinander anliegend in Steckrichtung des Steckers in die Kupplung hintereinander angeordnet. Denkbar ist auch eine Anordnung der Kontaktelemente mit Abstand voneinander. Die Kontaktelemente können deckungsgleich oder zueinander verdreht angeordnet sein. Mehrere Kontaktelemente erhöhen einen maximal möglichen Strom durch den Steckverbinder und verringern einen elektrischen Widerstand zwischen dem Stecker und der Kupplung.In a preferred embodiment of the invention, the connector has a plurality of stacked contact elements. The contact elements are arranged adjacent to one another in the insertion direction of the plug in the coupling one behind the other. It is also conceivable an arrangement of the contact elements at a distance from each other. The contact elements can be arranged congruent or mutually rotated. Multiple contact elements increase a maximum possible current through the connector and reduce electrical resistance between the plug and the coupling.

Eine Ausgestaltung der Erfindung sieht Querabstützungen des Steckers in der Kupplung beiderseits des Kontaktelements vor. In gestecktem Zustand ist der Stecker zwischen einer Mündung und dem Kontaktelement und zwischen einem freien Ende des Steckers und dem Kontaktelement in Querrichtung in der Kupplung abgestützt. Die Querabstützungen können nach Art von Fassungen ausgebildet sein. Sie halten den Stecker in einer vorgesehenen Lage ausgerichtet in der Kupplung. Sie vermeiden Relativbewegungen zwischen dem Stecker und der Kupplung quer zur Steckrichtung und wirken dadurch einem Radial- und einem Winkelversatz des Steckers in der Kupplung entgegen. Auch diese Maßnahme dient einer Sicherung des Kontaktelements gegen mechanische Überlastung und ist geeignet, die elektrische Verbindung zwischen dem Stecker und der Kupplung zu verbessern, indem sie wie bereits gesagt die vorgesehene Lage des Steckers in der Kupplung sicherstellt.An embodiment of the invention provides transverse supports of the plug in the coupling on both sides of the contact element. In the inserted state, the plug is supported between an opening and the contact element and between a free end of the plug and the contact element in the transverse direction in the coupling. The transverse supports can be designed in the manner of sockets. They hold the plug in an intended position aligned in the coupling. They avoid relative movements between the plug and the coupling transversely to the direction of insertion and thereby counteract a radial and an angular offset of the plug in the coupling. This measure also serves to secure the contact element against mechanical overload and is suitable for improving the electrical connection between the plug and the coupling by ensuring, as already stated, the intended position of the plug in the coupling.

Eine Ausgestaltung der Erfindung sieht vor, dass die nach innen abstehenden Höcker versetzt zu einer Mittelebene des ringförmigen Kontaktelements angeordnet sind. Die Höcker sind zur selben Seite der Mittelebene versetzt, vorzugsweise in Richtung der offenen Stelle des ringförmigen Kontaktelements. Aufgrund der federelastischen Anlage des Kontaktelements am Stecker verursachen die zur Mittelebene versetzt angeordneten, nach innen abstehenden Höcker eine Radialkraft, die das Kontaktelement quer in einer Richtung beaufschlagt. Das Kontaktelement wird dadurch in eine vorgesehene Lage auf dem Stecker und in der Kupplung gedrückt.An embodiment of the invention provides that the inwardly projecting bumps are arranged offset to a median plane of the annular contact element. The bumps are offset to the same side of the median plane, preferably in the direction of the open position of the annular contact element. Due to the resilient installation of the contact element on the plug causing the Placed center plane offset, inwardly projecting hump a radial force which acts on the contact element transversely in one direction. The contact element is thereby pressed into an intended position on the plug and in the coupling.

Die nach außen abstehenden Höcker sind bei einer Ausgestaltung der Erfindung den nach innen abstehenden Höckern gegenüber angeordnet, um das Kontaktelement an den Stellen gegen mechanische Überlastung in der hülsenförmigen Kupplung abzustützen, an denen der Stecker eine Kraft auf das Kontaktelement ausübt.The protruding outward cusps are arranged in an embodiment of the invention, the inwardly projecting protuberances opposite to support the contact element at the points against mechanical overload in the sleeve-shaped coupling, where the plug exerts a force on the contact element.

Vorzugsweise weist das Kontaktelement zwei äußere und zwei innere Höcker auf.Preferably, the contact element has two outer and two inner bumps.

Grundsätzlich kann das Kontaktelement auf dem Stecker angeordnet sein. Vorzugsweise ist es in der Kupplung angeordnet, wobei sich die Anordnung des Kontaktelements auf dem Stecker oder in der Kupplung auf einen ausgesteckten Zustand bezieht, weil im gesteckten Zustand das Kontaktelement sowohl auf dem Stecker als auch in der Kupplung angeordnet ist.In principle, the contact element can be arranged on the plug. Preferably, it is arranged in the coupling, wherein the arrangement of the contact element on the plug or in the coupling refers to a disconnected state, because in the inserted state, the contact element is arranged both on the plug and in the coupling.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Figur 1
einen Achsschnitt eines erfindungsgemäßen Steckverbinders in perspektivischer Darstellung, wobei vor einer Schnittfläche befindliche Kanten gezeichnet sind;
Figur 2
eine nicht-perspektivische Achsschnittdarstellung des Steckverbinders aus Figur 1; und
Figur 3
einen Querschnitt des Steckverbinders aus Figur 1 in gestecktem Zustand.
The invention will be explained in more detail with reference to an embodiment shown in the drawing. Show it:
FIG. 1
an axial section of a connector according to the invention in a perspective view, wherein edges located in front of a cut surface are drawn;
FIG. 2
a non-perspective Achsschnittdarstellung of the connector FIG. 1 ; and
FIG. 3
a cross section of the connector FIG. 1 in mated condition.

Die Figuren haben verschiedene Maßstäbe.The figures have different scales.

Der in der Zeichnung dargestellte erfindungsgemäße elektrische Steckverbinder 1 weist einen zylinderstiftförmigen Stecker 2 und eine hülsenförmige zylindrische Kupplung 3 auf. Der Stecker 2 weist an einem freien vorderen Ende einen zylindrischen Stützabschnitt 4, daran anschließend einen kegelstumpfförmigen Spreizabschnitt 5 und an diesen anschließend einen wieder zylindrischen Kontaktabschnitt 6 auf. Am Ende des Kontaktabschnitts 6 weist der Stecker 2 einen radialen Flansch 7 auf, von dem ein hohlzylindrischer Kragen 8 in Richtung des freien Endes des Steckers 2 absteht. Der Kragen 8 umschließt den Kontaktabschnitt 6 mit einem radialen kreisringförmigen Zwischenraum, der Kragen 8 ist in axialer Richtung niedriger als der Kontaktabschnitt 6 lang ist. An den Flansch 7 schließt sich ein Kabelanschluss 9 zum Verbinden des Steckers 2 mit einem nicht dargestellten Kabel oder sonstigen Stromleiter an. Das Kabel kann in an sich bekannter Weise durch Schweißen, Crimpen, Quetschen, Schraubklemmen etc. an den Stecker 2 angeschlossen werden, die Ausbildung des Kabelanschluss 9 ist nicht wesentlich für die Erfindung.The inventive electrical connector 1 shown in the drawing has a cylindrical pin-shaped plug 2 and a sleeve-shaped cylindrical coupling 3. The plug 2 has at a free front end a cylindrical support portion 4, then a frusto-conical expansion portion 5 and then to this again a cylindrical contact portion 6. At the end of the contact portion 6, the plug 2 has a radial flange 7, from which a hollow cylindrical collar 8 projects in the direction of the free end of the plug 2. The collar 8 encloses the contact portion 6 with a radial annular space, the collar 8 is lower in the axial direction than the contact portion 6 is long. At the flange 7, a cable connection 9 connects to connect the plug 2 with a cable, not shown, or other current conductor. The cable can be connected in a conventional manner by welding, crimping, crimping, screw terminals, etc. to the plug 2, the formation of the cable connection 9 is not essential to the invention.

Die hülsenförmige Kupplung 3 weist einen zylindrischen durchmessergestuften Aufnahmeraum 10 für den Stecker 2 auf. Im Anschluss an eine Mündung weist der Aufnahmeraum 10 der Kupplung 3 einen Kontaktabschnitt 11 auf, der sich mit einer kreisringförmigen Stützstufe 12 zu einem zylindrischen Zwischenabschnitt 13 verjüngt, der sich wiederum mit einer Ringstufe 14 zu einem zylindrischen Stützabschnitt 15 am Ende des als Sackloch ausgebildeten Aufnahmeraums 10 verjüngt. An einem der Mündung abgewandten Ende weist die Kupplung 3 einen Kabelanschluss 16 zum Verbinden mit einem nicht dargestellten Kabel oder einem sonstigen elektrischen Leiter wie der Stecker 2 auf. Auf die Ausgestaltung des Kabelanschluss 16 kommt es für die Erfindung nicht an.The sleeve-shaped coupling 3 has a cylindrical diameter-stepped receiving space 10 for the plug 2. Following an opening, the receiving space 10 of the coupling 3 has a contact portion 11 which tapers with an annular support step 12 to a cylindrical intermediate portion 13, which in turn with an annular step 14 to a cylindrical support portion 15 at the end of the receiving space formed as a blind hole 10 rejuvenated. At an end facing away from the mouth, the coupling 3 has a cable connection 16 for connection to a cable, not shown, or another electrical conductor, such as the plug 2. On the configuration of the cable connection 16 is not important for the invention.

An der Mündung verjüngt sich die Kupplung 3 außen mit einer Ringstufe zu einem zylindrischen Kragen 17, dessen Außendurchmesser mit einem Innendurchmesser des Kragens 8 des Steckers 2 übereinstimmt. Ein Durchmesser des Stützabschnitts 4 des Steckers 2 stimmt mit einem Innendurchmesser des Stützabschnitts 15 des Aufnahmeraums 10 der Kupplung 3 überein. In gestecktem Zustand, d. h. wenn der Stecker 2 in die Kupplung 3 gesteckt ist, was gleichbedeutend mit einem Stecken der Kupplung 3 auf den Stecker 2 ist, befinden sich der Stützabschnitt 4 des Steckers 2 im Stützabschnitt 15 der Kupplung 3 und der Kragen 17 der Kupplung 3 im Kragen 8 des Steckers 2. Sowohl die beiden Kragen 8, 17 als auch die beiden Stützabschnitte 4, 15 sind passgenau zueinander, so dass der Stecker 2 koaxial in der Kupplung 3 ausgerichtet ist. Die Stützabschnitte 4 des Steckers 2 und 15 der Kupplung 3 bilden eine Querabstützung, und ebenso der Kragen 17 der Kupplung 3 und der Kragen 8 des Steckers 2, die den Stecker 2, wenn er in die Kupplung 3 gesteckt ist, quer bzw. radial in der Kupplung 3 abstützt, d. h. den Stecker 2 und die Kupplung 3 koaxial zueinander ausrichtet und ausgerichtet hält. Ein Fluchtungsfehler, also ein Quer- bzw. Radialversatz und ein Winkelversatz des Steckers 2 zur Kupplung 3 werden durch die Querabstützungen 4, 15; 8, 17 vermieden.At the mouth, the coupling 3 tapers externally with an annular step to a cylindrical collar 17 whose outer diameter coincides with an inner diameter of the collar 8 of the plug 2. A diameter of the support portion 4 of the plug 2 coincides with an inner diameter of the support portion 15 of the receiving space 10 of the clutch 3. In plugged Condition, ie, when the plug 2 is inserted into the coupling 3, which is synonymous with a plug of the coupling 3 on the plug 2, the support portion 4 of the plug 2 are in the support portion 15 of the clutch 3 and the collar 17 of the clutch 3 in Collar 8 of the plug 2. Both the two collars 8, 17 and the two support portions 4, 15 are precisely to each other, so that the plug 2 is aligned coaxially in the coupling 3. The support portions 4 of the plug 2 and 15 of the coupling 3 form a transverse support, and also the collar 17 of the coupling 3 and the collar 8 of the plug 2, the plug 2, when it is plugged into the coupling 3, transversely or radially in the clutch 3 is supported, ie the connector 2 and the clutch 3 coaxially aligned and keeps aligned. A misalignment, so a transverse or radial offset and an angular offset of the connector 2 to the clutch 3 by the transverse supports 4, 15; 8, 17 avoided.

Der Zwischenabschnitt 13 des Aufnahmeraums 10 der Kupplung 3 weist einen etwas größeren Durchmesser als der Kontaktabschnitt 6 des Steckers 2 auf, es ist kein Kontakt des Kontaktabschnitts 6 des Steckers 2 mit dem Zwischenabschnitt 13 des Aufnahmeraums 10 der Kupplung 3 vorgesehen, der in gestecktem Zustand in den Zwischenabschnitt 13 eintaucht. Allerdings ist ein solcher Kontakt unschädlich.The intermediate portion 13 of the receiving space 10 of the coupling 3 has a slightly larger diameter than the contact portion 6 of the plug 2, there is no contact of the contact portion 6 of the plug 2 with the intermediate portion 13 of the receiving space 10 of the coupling 3 is provided, in the inserted state in the intermediate section 13 is immersed. However, such a contact is harmless.

Der Kontaktabschnitt 11 des Aufnahmeraums 10 der Kupplung 3 weist einen größeren Durchmesser auf als der Kontaktabschnitt 6 des Steckers 2, so dass hier ein ringförmiger Zwischenraum 18 zwischen der Kupplung 3 und dem Stecker 2 besteht, wenn der Stecker 2 in die Kupplung 3 gesteckt ist. Im Kontaktabschnitt 11 im Aufnahmeraum 10 der Kupplung 3 befindet sich ein Stapel, d. h. axial hintereinander angeordnete, elektrisch leitender Kontaktelemente 19. Die Kontaktelemente 19 können auch als Lamellen aufgefasst werden. Eines der Kontaktelemente 19 ist in Figur 3 in Ansicht zu sehen. Die Kontaktelemente 19 sind aus Blech gestanzte ebene Ringscheiben, sie sind nahezu, im Ausführungsbeispiel allerdings nicht exakt, kreisförmig. Die Kontaktelemente 19 weisen an einer Stelle ihres Umfangs eine Öffnung 20 auf, d. h. sie haben die Form unterbrochener Ringe. Beiderseits der Öffnung 20 weisen die Kontaktelemente 19 nach außen abstehende Vorsprünge 21 auf. Ebensolche Vorsprünge 22 weisen die Kontaktelemente 19 der Öffnung 20 gegenüber auf. Die Kontaktelemente 19 sind elastisch, sie federn in radialer Richtung, d. h. quer zu einer Steckrichtung des Steckers 2 in die Kupplung 3. Im Kontaktabschnitt 11 des Aufnahmeraums 10 der Kupplung 3, der die Kontaktelemente 19 nach Art einer Fassung hält, sind die Kontaktelemente 19 elastisch radial zusammengedrückt, so dass ihre Vorsprünge 21, 22 federnd mit einer Vorspannung innen am Kontaktabschnitt 11 des Aufnahmeraums 10 der Kupplung 3 anliegen. Auf diese Weise ergibt sich eine elektrisch gut leitende Verbindung zwischen der Kupplung 3 und den Kontaktelementen 19 mit niedrigem elektrischen Widerstand.The contact portion 11 of the receiving space 10 of the coupling 3 has a larger diameter than the contact portion 6 of the plug 2, so that there is an annular gap 18 between the coupling 3 and the plug 2 when the plug 2 is inserted into the coupling 3. In the contact portion 11 in the receiving space 10 of the clutch 3 is a stack, ie axially successively arranged, electrically conductive contact elements 19. The contact elements 19 can also be considered as slats. One of the contact elements 19 is in FIG. 3 to see in view. The contact elements 19 are punched flat sheet metal annular disks, they are almost, in the embodiment, however, not exactly, circular. The contact elements 19 have at one point of their circumference an opening 20, that is, they have the shape of broken Rings. On both sides of the opening 20, the contact elements 19 on protruding projections 21 on the outside. The same projections 22 have the contact elements 19 of the opening 20 opposite. The contact elements 19 are elastic, they spring in the radial direction, ie transversely to a direction of insertion of the plug 2 in the clutch 3. In the contact portion 11 of the receiving space 10 of the clutch 3, which holds the contact elements 19 in the manner of a version, the contact elements 19 are elastic radially compressed, so that their projections 21, 22 resiliently bear against the contact portion 11 of the receiving space 10 of the clutch 3 with a bias inside. In this way results in a good electrical connection between the coupling 3 and the contact elements 19 with low electrical resistance.

An ihren Innenseiten weisen die Kontaktelemente 19 zwei nach innen abstehende und hier als Höcker 23 bezeichnete Vorsprünge auf, die sich ungefähr in einer Mitte zwischen den nach außen abstehenden Vorsprüngen 21 an der Öffnung 20 und den gegenüberliegenden, nach außen abstehenden Vorsprüngen 22 der Kontaktelemente 19 befinden. Wie gesagt, befinden sich die nach innen abstehenden Höcker 23 nicht genau in der Mitte, sondern sie sind etwas in Richtung der Öffnung 20 versetzt. Der Versatz der Höcker 23 von einer Mittelebene in Richtung der Öffnung 20 der Kontaktelemente 19 beträgt im gezeigten Beispiel ungefähr zwischen 10 und 15°.On their insides, the contact elements 19 have two inwardly projecting and here as bumps 23 projections which are located approximately in a middle between the outwardly projecting projections 21 on the opening 20 and the opposing, outwardly projecting projections 22 of the contact elements 19 , As mentioned, the inwardly projecting bumps 23 are not exactly in the middle, but they are slightly offset in the direction of the opening 20. The offset of the bumps 23 from a median plane in the direction of the opening 20 of the contact elements 19 in the example shown is approximately between 10 and 15 °.

Die Kontaktelemente 19 stützen sich an der Stützstufe 12 im Aufnahmeraum 10 der Kupplung 3 ab. Eine in der Mündung des Aufnahmeraums 10 der Kupplung 3 angeordnete und festgelegte Lochscheibe 25 hält die Kontaktelemente 19 im Kontaktabschnitt 11 des Aufnahmeraums 10 der Kupplung 3.The contact elements 19 are based on the support stage 12 in the receiving space 10 of the clutch 3. A arranged in the mouth of the receiving space 10 of the clutch 3 and fixed orifice plate 25 holds the contact elements 19 in the contact portion 11 of the receiving space 10 of the coupling third

Die Querabstützungen des Steckers 2 in der Kupplung 3, die von den Stützabschnitten 4, 15 und den Krägen 8, 17 des Steckers 2 und der Kupplung 3 gebildet werden, befinden sich beiderseits der Kontaktelemente 19, d. h. axial vor und hinter den Kontaktelementen 19.The transverse supports of the plug 2 in the coupling 3, which are formed by the support sections 4, 15 and the collars 8, 17 of the plug 2 and the coupling 3, are located on both sides of the contact elements 19, ie axially in front of and behind the contact elements 19th

Beim Stecken des Steckers 2 in die Kupplung 3 tritt zuerst der Stützabschnitt 4 des Steckers 2 durch die Kontaktelemente 19 hindurch, anschließend spreizt bzw. weitet der kegelstumpfförmige Spreizabschnitt 5 des Steckers 2 die Kontaktelemente 19 elastisch auf und danach gelangt der zylindrische Kontaktabschnitt 6 des Steckers 2 zwischen die Kontaktelemente 19. Die Kontaktelemente 19 liegen mit ihren nach innen abstehenden Höckern 23 am Stecker 2 an, so dass ihre ungefähr halbkreisbogenförmigen Abschnitte zwischen den gegenüberliegenden, nach außen abstehenden Vorsprüngen 21, 22 elastisch nach außen gedrückt werden. Die ungefähr halbkreisförmigen Bögen zwischen den gegenüberliegenden, von den Kontaktelementen 19 nach außen abstehenden Vorsprünge 21, 22 werden ungefähr in ihren Mitten, nämlich dort, wo sich die nach innen abstehenden Höcker 23 befinden, vom Stecker 2 elastisch nach außen gedrückt und dadurch elastisch gespannt. Die Höcker 23 liegen deswegen mit einer Vorspannung am Kontaktabschnitt 6 des Steckers 2 an, wodurch eine elektrisch gut leitende Verbindung zwischen den Kontaktelementen 19 und dem Stecker 2 mit niedrigem elektrischem Widerstand gewährleistet ist.When plugging the plug 2 into the coupling 3, first the support portion 4 of the plug 2 passes through the contact elements 19, then spreads or widens the frustoconical expansion portion 5 of the plug 2, the contact elements 19 elastically and then passes the cylindrical contact portion 6 of the plug. 2 between the contact elements 19. The contact elements 19 abut with their inwardly projecting bumps 23 on the plug 2, so that their approximately semicircular arc-shaped portions between the opposite, outwardly projecting projections 21, 22 are pressed elastically outward. The approximately semicircular arcs between the opposing protrusions 21, 22 projecting outward from the contact elements 19 are pressed approximately elastically outwards by the plug 2 in their centers, namely where the inwardly projecting protuberances 23 are located. The bumps 23 are therefore with a bias on the contact portion 6 of the plug 2, whereby a good electrical conductive connection between the contact elements 19 and the plug 2 is ensured with low electrical resistance.

Aufgrund ihres Versatz in Richtung der Öffnung 20 der Kontaktelemente 19 und der Vorspannung, mit der die nach innen abstehenden Höcker 23 der Kontaktelemente 19 am Stecker 2 anliegen, wirkt eine Radialkraft quer zum Stecker 2, die die Kontaktelemente 19 in eine definierte Lage zum Stecker 2 drückt; die Kontaktelemente 19 liegen ihrer Öffnung 20 gegenüber am Kontaktabschnitt 6 des Steckers 2 an.Due to their offset in the direction of the opening 20 of the contact elements 19 and the bias with which the inwardly projecting bumps 23 of the contact elements 19 abut the plug 2, a radial force acts transversely to the plug 2, the contact elements 19 in a defined position to the plug. 2 suppressed; the contact elements 19 are located opposite to their opening 20 at the contact portion 6 of the plug 2.

Den nach innen abstehenden Höckern 23 gegenüber weisen die Kontaktelemente 19 zwei nach außen abstehende Höcker 24 auf, also ebenfalls nach außen abstehende Vorsprünge. Die nach außen abstehenden Höcker 24 der Kontaktelemente 19 liegen nicht an Kupplung 3 an, zwischen ihnen besteht ein Spalt d, auch wenn der Stecker 2 in die Kupplung 3 gesteckt ist, d. h. sich der Kontaktabschnitt 6 des Steckers 2 in den Kontaktelementen 19 befindet und sie an den nach innen abstehenden Höckern 23 elastisch nach außen drückt. Der Spalt d ist in Figur 2 übertrieben groß gezeichnet, er beträgt wenige 1/100 mm, beispielsweise ungefähr 5/100 mm bei einem Durchmesser des Kontaktabschnitts 6 des Steckers 2 von 8 mm. Bei größeren oder kleineren Durchmessern vergrößert oder verkleinert sich der Spalt d, allerdings nicht unbedingt proportional. Auch ist nicht ausgeschlossen, dass der Spalt d bei unterschiedlichen Durchmessern des Kontaktabschnitts 6 des Steckers 2 gleich groß ist. Die nach außen abstehenden Höcker 24 begrenzen durch Anlage innen am Kontaktabschnitt 11 des Aufnahmeraums 10 der Kupplung 3 eine maximal mögliche Verformung der Kontaktelemente 19. Der Spalt d ist so eng gewählt, dass eine plastische Verformung der Kontaktelemente 19 ausgeschlossen ist. Ebenfalls verhindern die nach außen abstehenden Höcker 24 der Kontaktelemente 19 einen Bruch oder eine sonstige Beschädigung der Kontaktelemente 19 bei einer Dauerbeanspruchung, beispielsweise in Folge von auf die Steckverbindung 1 einwirkenden Vibrationen wie sie beispielsweise beim Fahrbetrieb eines Kraftwagens auftreten können, insbesondere wenn die Kupplung 3 oder der Stecker 2 starr ohne Dämpfung am Kraftwagen befestigt ist.The inwardly projecting bumps 23 opposite to the contact elements 19, two outwardly projecting bumps 24, so also protruding outward projections. The protruding outward bumps 24 of the contact elements 19 are not applied to the coupling 3, between them there is a gap d, even if the plug 2 is inserted into the coupling 3, that is, the contact portion 6 of the plug 2 is in the contact elements 19 and they on the inwardly projecting humps 23 elastically presses outward. The gap d is in FIG. 2 drawn exaggeratedly large, it is a few 1/100 mm, for example about 5/100 mm at a diameter of the contact portion 6 of the connector 2 of 8 mm. For larger or smaller diameters, the gap d increases or decreases, but not necessarily proportional. Also, it is not excluded that the gap d at different diameters of the contact portion 6 of the connector 2 is the same size. The protruding outwardly projecting bumps 24 limit by conditioning on the contact portion 11 of the receiving space 10 of the clutch 3 a maximum possible deformation of the contact elements 19. The gap d is chosen so narrow that a plastic deformation of the contact elements 19 is excluded. Also prevent the protruding outward bumps 24 of the contact elements 19 breakage or other damage to the contact elements 19 at a continuous load, for example, as a result of acting on the connector 1 vibrations such as may occur when driving a motor vehicle, especially if the clutch 3 or the plug 2 is fixed rigidly without damping on the motor vehicle.

Claims (9)

  1. Electrical plug connector (1), with a pin-shaped plug (2) and a sleeve-shaped coupling (3), which encloses the plug (2) with an intermediary cavity (18) in an inserted condition of the plug (2), and with an electrically conductive contact element (19) arranged in the intermediary cavity (18), which is formed as a discontinuous ring and is spring elastic transversal to an insertion direction and contacts the coupling (3) and the plug (2) in an inserted condition and which connects the plug (2) and the coupling (3) electrically conductive, characterized in that the contact element (19) comprises inward and outward protruding knobs (23, 24), wherein the inward protruding knobs (23) contact the plug (2) in the inserted condition of the plug, whereas a gap (d) is provided between the outward protruding knobs (24) and the coupling (3).
  2. Electrical plug connector according to claim 1, characterized in that the plug (2) and the coupling (3) comprises a ring-shaped cross-section at a plug-in section and the contact element (19) is shaped as a discontinuous circular ring.
  3. Electrical plug connector according to claim 1 or 2, characterized in that the plug connector (1) comprises several stacked contact elements (19).
  4. Electrical plug connector according to one of the claims 1 to 3, characterized in that the plug connector (1) comprises at both sides of the contact element (19) transversal supports (4, 15; 8, 17) for the plug (2) in the coupling (3).
  5. Electrical plug connector according to one of the claims 1 to 4, characterized in that the inward protruding knobs (23) are arranged offset from a center plane of the annular contact element (19).
  6. Electrical plug connector according to claim 5, characterized in that the inward protruding knobs (23) are arranged offset from the center plane of the annular contact element (19) in direction towards an opening (20).
  7. Electrical plug connector according to one of the preceding claims, characterized in that the outward protruding knobs (24) are arranged opposite to the inward protruding knobs (23).
  8. Electrical plug connector according to one of the preceding claims, characterized in that the contact element (19) comprises two outward and two inward protruding knobs (23, 24).
  9. Electrical plug connector according to one of the preceding claims, characterized in that the contact element (19) is arranged in the coupling (3).
EP11401637.1A 2011-11-21 2011-11-21 Electrical connector Active EP2595250B1 (en)

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EP11401637.1A EP2595250B1 (en) 2011-11-21 2011-11-21 Electrical connector
US13/539,811 US8579653B2 (en) 2011-11-21 2012-07-02 Electrical plug connector having a contact element with inwardly and outwardly protruding knobs

Applications Claiming Priority (1)

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EP11401637.1A EP2595250B1 (en) 2011-11-21 2011-11-21 Electrical connector

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EP2595250A1 EP2595250A1 (en) 2013-05-22
EP2595250B1 true EP2595250B1 (en) 2014-01-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN106384902A (en) * 2016-11-29 2017-02-08 河南天海电器有限公司 Connector contact type elastic internal contact structure, manufacture die and manufacture method for the same

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US10511130B2 (en) * 2017-09-07 2019-12-17 Suyin Electronics (Dongguan) Co., Ltd Charging connector having a sleeve with slots surrounding a contact piece with corresponding contact arms
CA3136832A1 (en) 2019-05-03 2020-11-12 Rampart Products Llc Multi-conductor rotary connector

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EP3010091A1 (en) 2014-10-16 2016-04-20 Wolf Neumann-Henneberg Electric plug connector
US9490572B2 (en) 2014-10-16 2016-11-08 Wolf Neumann-Henneberg Electrical plug connector
CN106384902A (en) * 2016-11-29 2017-02-08 河南天海电器有限公司 Connector contact type elastic internal contact structure, manufacture die and manufacture method for the same

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