EP3539183B1 - Contact element comprising a clamping terminal for a stranded conductor - Google Patents

Contact element comprising a clamping terminal for a stranded conductor Download PDF

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Publication number
EP3539183B1
EP3539183B1 EP17803827.9A EP17803827A EP3539183B1 EP 3539183 B1 EP3539183 B1 EP 3539183B1 EP 17803827 A EP17803827 A EP 17803827A EP 3539183 B1 EP3539183 B1 EP 3539183B1
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EP
European Patent Office
Prior art keywords
clamping
section
contact
contact element
arm
Prior art date
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Active
Application number
EP17803827.9A
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German (de)
French (fr)
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EP3539183A1 (en
Inventor
Pascal Wölffle
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Amphenol Tuchel Electronics GmbH
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Amphenol Tuchel Electronics GmbH
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Publication of EP3539183A1 publication Critical patent/EP3539183A1/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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • 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
    • H01R13/04—Pins or blades for co-operation with sockets
    • 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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

Definitions

  • the invention relates to an electrical contact element according to claim 1.
  • the invention therefore relates in particular to an electrical contact element with a connection for stranded conductors, the contact element having a specifically shaped and actuatable contact spring which can be transferred into a position clamping the stranded conductor and in the clamping position makes clamping contact with the preferably stripped end of a stranded conductor.
  • Such contact elements are provided in order to connect connections with stranded conductor cables, which can be assembled in the field, both mechanically and reliably to the contact element, whereby it must also be ensured that high tensile forces, mechanical influences and vibrations do not cause any undesired separation of the connection.
  • stranded conductors are connected to contact elements with crimp connections or, alternatively, stranded conductors can be connected to contact elements in which a conical contact part in a contact element presses the stranded conductors onto a correspondingly shaped counter surface by means of axially or radially acting forces, where the angles of the conical surfaces are usually the same.
  • the contact element for connecting a stranded conductor, the contact element being formed from a clamping sleeve and a mandrel-like contact part held screwably in the clamping sleeve, the contact part having a conical tip at an angle ⁇ to the vertical and a funnel-shaped connection end being viewed on the clamping sleeve, in which the stranded conductor can be inserted into an inner connection chamber and a conical surface with an angle ⁇ to the vertical is also formed and the contact part, however, can only be screwed into the connection chamber and the stranded conductor inserted therein that between the tip of the contact part and the conical surface of the Shoulder a minimum overlap remains.
  • This technical teaching discloses a contact element in which the stranded conductor end is, however, pressed against a side wall by the clamping sleeve and there is a risk that the ends of the stranded conductor will be damaged or even severed during the pressing. Particularly when screwing the clamping sleeve, high forces arise that can partially or completely shear off the stranded conductors, which in the worst case, however, remains undetected.
  • the invention is therefore based on the object of creating a secure and easily producible connection between a contact element of the type mentioned and a stranded conductor in such a way that the aforementioned disadvantages are overcome and the stranded conductor, in addition to an optimal electrical contact connection, in particular is held securely in the event of vibrations, and a high pull-out security in the contact element is guaranteed.
  • a basic idea of the invention consists in equipping a contact element with a resilient clamping element, the clamping element having a fastening arm encompassing the contact element and a clamping spring arm for contacting a stranded conductor.
  • the clamping element z. B. be attached to a contact with a screw terminal block of suitable contour and a screwless, namely clamping contact of a stranded conductor with a contact surface of the terminal block can be made.
  • One aspect of the invention therefore relates to a resilient clamping element with a clamping spring arm for the clamping contacting of a stranded conductor end between the clamping surface of a contacting section of a connection block of the contact element and the clamping spring arm, the clamping element having at least one holding arm with an end wrap-around section with which the resilient clamping element is attached to the connection block of the contact element is attached.
  • the clamping element is attached to the contact element by means of at least one holding arm which at least partially encompasses the contacting section of the contact pin on the outside.
  • the electrical contact element 1 is formed from an elongated cylindrical contact pin 2, to which a solid contacting section 4 adjoins, as in the exemplary embodiments of the electrical contact elements 1 of FIG Figures 1 to 4 is shown.
  • the contacting section 4 is designed as a connection block 9, the contacting section 4 in each case having an external clamping surface 40 which points in the direction of the clamping spring arm 6 of the clamping element 5.
  • a resilient clamping element 5 encompassing the outer jacket 41 is fastened.
  • clamping elements 5 are designed in such a way that they have a clamping spring arm 6 for the clamping contacting of a stranded conductor between the clamping surface 40 of the contacting section 4 of the electrical contact element 1 and the Contacting area of the spring clip arm 6.
  • the spring clip arm 6 is here when a stranded wire is inserted into the Figures 1a and 1b Resiliently actuated from above from a Litzenleitein Concreteposition to a conductor clamping position, in that the clamping spring arm 6 of the clamping element 5 is actuated in the direction of its holding section 60, the stranded conductor is pressed against the clamping surface 40 in a spring-loaded manner by the clamping spring arm 6. In this way one can realize a tool-free contact.
  • the encompassing section 51 rests against the correspondingly corresponding outer contour of the contacting section 4 on the connection block 9 of the contact element 1.
  • the clamping element 5 has two holding arms 50 with a wrap-around section 51 bent at the ends, wherein in the Figures 2 the wraparound takes place from the same side, while in the execution according to Figure 4 the two holding arms 50 encompass the contacting section 4 of the contact element 1 with their wrap-around sections 51 coming from different and opposite sides.
  • FIG. 5 to 7 a further alternative embodiment of an electrical contact element 1 according to the invention is shown, with which in Figure 7 Clamping element 5 designed as an alternative according to the invention.
  • the clamping element 5 also has a holding arm 50 which is angled and connected to the clamping spring arm 6 via a bending point 53.
  • the wrap-around portion 51 has a C-shaped shape in this exemplary embodiment.
  • the electrical contact element 1 is designed in such a way that the contacting section 4 forms a contact chamber 43 with an internal clamping surface 40 and the clamping spring arm 6 of the clamping element 5 protrudes through an opening 44 of the contact chamber 43 into the contact chamber 43.
  • the stranded conductor would be actuated through the upper opening 44 of the contact chamber 43 into the contact chamber 43 and presses the clamping spring arm 6 out of its in Figure 5 Stranded conductor insertion position shown in a conductor clamping position in which the stranded conductor between the clamping spring arm 6 and the opposite clamping surface 40 in the contact chamber 43 is contacted in a clamping manner.
  • FIG. 8 to 10 a further alternative embodiment of an electrical contact element 1 according to the invention is shown, with which in Figure 10 Clamping element 5 designed as an alternative according to the invention.
  • Clamping element 5 has three holding arms 50, 54, which are angled connected to clamping spring arm 6 via a bending point 53.
  • two wrap-around sections 51 in this exemplary embodiment have an L-shaped shape.
  • the third, end-side holding arm 54 secures the resilient clamping element 5 in a form-fitting manner according to FIG Figure 9 in that the resilient clamping element 5 has a resilient arm cutout 62 on the holding section 60 and engages by means of the re-hook 46.
  • the electrical contact element 1 is designed in such a way that the contacting section 4 forms a contact chamber 43 with an internal clamping surface 40 and the clamping spring arm 6 of the clamping element 5 protrudes through an opening 44 of the contact chamber 43 into the contact chamber 43.
  • the stranded conductor would be actuated through the opening 44 of the contact chamber 43 into the contact chamber 43 and pushes the clamping spring arm 6 out of its in Figure 8 Stranded conductor insertion position shown in a conductor clamping position, in which the stranded conductor between the clamping spring arm 6 and the opposite clamping surface 40 in the contact chamber 43 is contacted in a clamping manner.
  • a section 4a of the contacting section 4 is held in a clamping manner between the barb 46 and an end-side holding arm 54 formed by the clamping element 5.
  • the electrical contact elements 1 in the fastening area of the contacting section 4 have a cylinder jacket-shaped shape, so that the wraparound sections 51 rest against the contacting section 4 with a form fit.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Measuring Leads Or Probes (AREA)

Description

Die Erfindung betrifft ein elektrisches Kontaktelement gemäß Anspruch 1.The invention relates to an electrical contact element according to claim 1.

Die Erfindung betrifft daher insbesondere ein elektrisches Kontaktelement mit einem Anschluss für Litzenleiter, wobei das Kontaktelement eine spezifisch geformte und betätigbare Kontaktfeder aufweist, die in eine den Litzenleiter klemmende Position überführbar ist und in der Klemmposition das vorzugsweise abisolierte Ende eines Litzenleiters klemmend kontaktiert.The invention therefore relates in particular to an electrical contact element with a connection for stranded conductors, the contact element having a specifically shaped and actuatable contact spring which can be transferred into a position clamping the stranded conductor and in the clamping position makes clamping contact with the preferably stripped end of a stranded conductor.

Solche Kontaktelemente sind vorgesehen, um insbesondere im Feld konfektionierbare Verbindungen mit Litzenleiterkabeln sowohl mechanisch fest als auch elektrisch zuverlässig mit dem Kontaktelement zu verbinden, wobei auch gewährleistet sein muss, dass hohe Zugkräfte, mechanische Einflüsse und Vibrationen keine ungewollte Trennung der Verbindung hervorrufen dürfen.Such contact elements are provided in order to connect connections with stranded conductor cables, which can be assembled in the field, both mechanically and reliably to the contact element, whereby it must also be ensured that high tensile forces, mechanical influences and vibrations do not cause any undesired separation of the connection.

So ist es im Stand der Technik zum Beispiel bekannt, dass Litzenleiter mit Crimpverbindungen an Kontaktelementen angebunden werden oder alternativ Litzenleiter mit Kontaktelementen verbindbar sind, bei denen ein kegelförmiges Kontaktteil in einem Kontaktelement die Litzenleiter mittels axial oder radial wirkender Kräfte auf eine entsprechende geformte Gegenfläche pressen, wobei die Winkel der Kegelflächen in der Regel gleich sind.For example, it is known in the prior art that stranded conductors are connected to contact elements with crimp connections or, alternatively, stranded conductors can be connected to contact elements in which a conical contact part in a contact element presses the stranded conductors onto a correspondingly shaped counter surface by means of axially or radially acting forces, where the angles of the conical surfaces are usually the same.

Im Stand der Technik ist beispielsweise ein solches zum Anschluss von Litzenleiter beschriebenes Kontaktelement in der DE 89 14 460 U1 offenbart.In the prior art, for example, such a contact element described for connecting stranded conductors is in FIG DE 89 14 460 U1 disclosed.

Des Weiteren ist in der DE 197 18 004 C1 ein Kontaktsystem bestehend aus einem Buchsenteil und einem Steckerteil mit federelastischen Kontaktlamellen offenbart, zur Übertragung von hohen Strömen.Furthermore, in the DE 197 18 004 C1 a contact system consisting of a socket part and a plug part with resilient contact blades disclosed for the transmission of high currents.

In der FR 618 171 A sind Vorrichtungen offenbart, die geeignet sind zum Klemmen von elektrischen Leitern für elektrische Geräte, bei denen insbesondere ummantelte elektrische Leiter in isolierende Vorrichtungen zur Montage verklemmt werden.In the FR 618 171 A Devices are disclosed which are suitable for clamping electrical conductors for electrical devices, in which, in particular, sheathed electrical conductors are clamped in insulating devices for assembly.

Ferner ist in der DE 102 20 108 B4 ein Kontaktelement zum Anschluss eines Litzenleiters offenbart, wobei das Kontaktelement aus einer Klemmhülse und einer in der Klemmhülse schraubbar gehaltenen, dornartigen Kontaktteil gebildet ist, wobei das Kontaktteil eine kegelförmige Spitze mit einem Winkel α zur Senkrechten aufweist und an der Klemmhülse ein trichterförmiges Anschlussende angesehen ist, in das der Litzenleiter in eine innere Anschlusskammer einführbar ist und wobei ferner eine Kegelfläche mit einem Winkel β zur Senkrechten ausgebildet ist und das Kontaktteil jedoch nur soweit in die Anschlusskammer und den darin eingeführten Litzenleiter einschraubbar ist, dass zwischen der Spitze des Kontaktteils und der Kegelfläche der Schulter eine Mindestüberlappung verbleibt.Furthermore, in the DE 102 20 108 B4 discloses a contact element for connecting a stranded conductor, the contact element being formed from a clamping sleeve and a mandrel-like contact part held screwably in the clamping sleeve, the contact part having a conical tip at an angle α to the vertical and a funnel-shaped connection end being viewed on the clamping sleeve, in which the stranded conductor can be inserted into an inner connection chamber and a conical surface with an angle β to the vertical is also formed and the contact part, however, can only be screwed into the connection chamber and the stranded conductor inserted therein that between the tip of the contact part and the conical surface of the Shoulder a minimum overlap remains.

DE 10 2007 024690 A1 offenbart den Oberbegriff des Anspruchs 1. DE 10 2007 024690 A1 discloses the preamble of claim 1.

Diese technische Lehre offenbart ein Kontaktelement, bei dem das Litzenleiterende allerdings von der Klemmhülse gegen eine Seitenwand verpresst wird und die Gefahr besteht, dass die Enden der Litzenleiter beim Verpressen beschädigt werden oder gar durchtrennt werden. Insbesondere beim Verschrauben der Klemmhülse entstehen hohe Kräfte, die die Litzenleiter teilweise oder vollständig abscheren können, was im ungünstigen Fall allerdings unentdeckt bleibt.This technical teaching discloses a contact element in which the stranded conductor end is, however, pressed against a side wall by the clamping sleeve and there is a risk that the ends of the stranded conductor will be damaged or even severed during the pressing. Particularly when screwing the clamping sleeve, high forces arise that can partially or completely shear off the stranded conductors, which in the worst case, however, remains undetected.

Aufgabe der vorliegenden ErfindungObject of the present invention

Der Erfindung liegt daher die Aufgabe zu Grunde, eine sichere und einfach herstellbare Verbindung zwischen einem Kontaktelement der Eingangs genannten Art und einem Litzenleiter dahingehend auszubilden, dass vorbesagte Nachteile überwunden werden und der Litzenleiter neben einer optimalen elektrischen Kontaktanbindung, insbesondere sicher bei Vibrationseinflüssen gehalten wird und eine hohe Auszugssicherheit im Kontaktelement gewährleistet wird.The invention is therefore based on the object of creating a secure and easily producible connection between a contact element of the type mentioned and a stranded conductor in such a way that the aforementioned disadvantages are overcome and the stranded conductor, in addition to an optimal electrical contact connection, in particular is held securely in the event of vibrations, and a high pull-out security in the contact element is guaranteed.

Diese Aufgabe wird gelöst durch ein elektrisches Kontaktelement mit einem Federteil mit den Merkmalen von Anspruch 1.This object is achieved by an electrical contact element with a spring part with the features of claim 1.

Ein Grundgedanke der Erfindung besteht darin, ein Kontaktelement mit einem federnden Klemmelement auszustatten, wobei das Klemmelement einen das Kontaktelement umgreifenden Befestigungsarm sowie einen Klemmfederarm zur Kontaktierung eines Litzenleiters aufweist.A basic idea of the invention consists in equipping a contact element with a resilient clamping element, the clamping element having a fastening arm encompassing the contact element and a clamping spring arm for contacting a stranded conductor.

Auf diese Weise kann das Klemmelement z. B. an einem Kontakt mit einem Schraubanschlussblock geeigneter Kontur befestigt werden und ein schraubenloser, nämlich klemmender Kontakt eines Litzenleiters mit einer Kontaktierungsfläche des Anschlussblocks hergestellt werden.In this way, the clamping element z. B. be attached to a contact with a screw terminal block of suitable contour and a screwless, namely clamping contact of a stranded conductor with a contact surface of the terminal block can be made.

Ein Aspekt der Erfindung betrifft daher ein federndes Klemmelement mit einen Klemmfederarm zur klemmenden Kontaktierung eines Litzenleiterendes zwischen der Klemmfläche eines Kontaktierungsabschnitts eines Anschlussblocks des Kontaktelements und dem Klemmfederarm, wobei das Klemmelement wenigstens einen Haltearm mit einem endseitigen Umgriffabschnitt aufweist, mit dem das federnde Klemmelement an dem Anschlussblock des Kontaktelements befestigt ist.One aspect of the invention therefore relates to a resilient clamping element with a clamping spring arm for the clamping contacting of a stranded conductor end between the clamping surface of a contacting section of a connection block of the contact element and the clamping spring arm, the clamping element having at least one holding arm with an end wrap-around section with which the resilient clamping element is attached to the connection block of the contact element is attached.

In einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass das Klemmelement mittels wenigstens einem, den Kontaktierungsabschnitt des Kontaktstiftes zumindest teilweise außen umgreifenden Haltearm am Kontaktelement befestigt ist.In a preferred embodiment of the invention it is provided that the clamping element is attached to the contact element by means of at least one holding arm which at least partially encompasses the contacting section of the contact pin on the outside.

Weitere vorteilhafte Ausgestaltungen und Merkmale sind wie folgt, die sowohl einzeln als auch in Kombination verwendet werden können:

  • Erfindungsgemäß ist der wenigstens eine Haltearm am Klemmelement mit einem endseitigen umgebogenen Umgriffabschnitt ausgebildet;
  • die Form des Umgriffabschnitts stellt eine teilkreisbogenförmige Umbiegung des Klemmfederarms dar, vorzugsweise mit einem Teilkreissegment zwischen 90° und 180°, weiter vorzugsweise zwischen 100° und 135°;
  • Erfindungsgemäß ist die Außenkontur des Kontaktstiftes im Befestigungsbereich des Kontaktierungsabschnitt zylindermantelförmig ausgebildet;
  • der Klemmfederarm weist einen nicht federnden Halteabschnitt auf und ein federnder -Klemmarmabschnitt des Klemmfederarms ragt in Richtung des Kontaktstifts;
  • der oder die Haltearme sind als im Wesentlichen streifenförmige und endseitig umgebogene Blechzungen ausgebildet, welche mit ihrem einen Haltearmende abgewinkelt über eine Biegestelle mit dem Klemmfederarm verbunden sind;
  • zwei Haltearme umgreifen den Kontaktierungsabschnitt des Kontaktstiftes mit einem Umgriffabschnitt von gleichen Seiten oder alternativ von unterschiedlichen, vorzugsweise gegenüberliegenden Seiten, wodurch eine besonders gute Umklammerung erzielt werden kann;
  • Erfindungsgemäß ist der Umgriffabschnitt in einer L- oder C-Form ausgebildet, so dass dieser beispielsweise auch kastenförmige Kontaktelemente umgreifen kann;
Further advantageous configurations and features are as follows, which can be used both individually and in combination:
  • According to the invention, the at least one holding arm on the clamping element is designed with an end-side bent wrap-around section;
  • the shape of the wrap-around section represents a partial arc-shaped bending of the clamping spring arm, preferably with a partial circular segment between 90 ° and 180 °, more preferably between 100 ° and 135 °;
  • According to the invention, the outer contour of the contact pin in the fastening area of the contacting section is designed in the shape of a cylinder jacket;
  • the clamping spring arm has a non-resilient holding section and a resilient -Klemmarmabschnitt the clamping spring arm protrudes in the direction of the contact pin;
  • the holding arm (s) are designed as essentially strip-shaped sheet metal tongues which are bent over at the ends and which are connected with their one holding arm end at an angle via a bending point to the clamping spring arm;
  • two holding arms encompass the contacting section of the contact pin with an encompassing section from the same sides or, alternatively, from different, preferably opposite sides, whereby a particularly good grip can be achieved;
  • According to the invention, the wrap-around section is designed in an L or C shape, so that it can, for example, also grip around box-shaped contact elements;

Die Erfindung wird im Folgenden anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit den Figuren näher erläutert. Dabei zeigen:

Fig. 1a bis 1d
eine erste Ausführungsform eines erfindungsgemäßen Kontaktelementes mit einer Ausgestaltung eines Klemmelements;
Fig. 2a bis 2d
eine zweite Ausführungsform eines erfindungsgemäßen Kontaktelementes mit einer Ausgestaltung eines Klemmelements;
Fig. 3a bis 3d
eine dritte Ausführungsform eines erfindungsgemäßen Kontaktelementes mit einer Ausgestaltung eines Klemmelements;
Fig. 4a bis 4d
eine vierte Ausführungsform eines erfindungsgemäßen Kontaktelementes mit einer Ausgestaltung eines Klemmelements;
Fig. 5
eine alternative Ausführungsform eines erfindungsgemäßen Kontaktelements in einer Schnittansicht;
Fig. 6
das Kontaktelement gemäß Figur 5 in einer perspektivischen Ansicht;
Fig. 7
eine Ausführungsform eines erfindungsgemäßen Klemmelements;
Fig. 8
eine alternative Ausführungsform eines erfindungsgemäßen Kontaktelements in einer Schnittansicht;
Fig. 9
das Kontaktelement gemäß Figur 8 in einer perspektivischen Ansicht;
Fig. 10
eine Ausführungsform eines erfindungsgemäßen Klemmelements.
The invention is explained in more detail below using a preferred exemplary embodiment in conjunction with the figures. Show:
Figures 1a to 1d
a first embodiment of a contact element according to the invention with a configuration of a clamping element;
Figures 2a to 2d
a second embodiment of a contact element according to the invention with a configuration of a clamping element;
Figures 3a to 3d
a third embodiment of a contact element according to the invention with a configuration of a clamping element;
Figures 4a to 4d
a fourth embodiment of a contact element according to the invention with a configuration of a clamping element;
Fig. 5
an alternative embodiment of a contact element according to the invention in a sectional view;
Fig. 6
the contact element according to Figure 5 in a perspective view;
Fig. 7
an embodiment of a clamping element according to the invention;
Fig. 8
an alternative embodiment of a contact element according to the invention in a sectional view;
Fig. 9
the contact element according to Figure 8 in a perspective view;
Fig. 10
an embodiment of a clamping element according to the invention.

Die Erfindung wird nachfolgend anhand der Figuren 1 bis 10 näher beschrieben, wobei gleiche Bezugszeichen gleiche funktionale und/oder strukturelle Merkmale bezeichnen.The invention is explained below with reference to Figures 1 to 10 described in more detail, the same reference symbols denoting the same functional and / or structural features.

In den Figuren 1a, 1b, 2a, 2b, 3a, 3b und 4a, 4b sind jeweils Ausführungsformen eines erfindungsgemäßen Kontaktelementes 1 gezeigt und in den Figuren 1c, 1d, 2c, 2d, 3c, 3d und 4c, 4d sind jeweils Klemmelemente 5 der zuvor genannten Ausführungsformen der Kontaktelemente 1 gezeigt.In the Figures 1a, 1b , 2a, 2b , 3a, 3b and 4a, 4b Embodiments of a contact element 1 according to the invention are each shown and in the Figures 1c, 1d , 2c, 2d , 3c, 3d and 4c, 4d clamping elements 5 of the aforementioned embodiments of the contact elements 1 are shown in each case.

Das elektrische Kontaktelement 1 ist ausgebildet aus einem länglichen zylinderförmigen Kontaktstift 2, an den sich ein massiver Kontaktierungsabschnitt 4 anschließt, wie dies in den Ausführungsbeispielen der elektrischen Kontaktelemente 1 der Figuren 1 bis 4 gezeigt ist. Der Kontaktierungsabschnitt 4 ist als Anschlussblock 9 ausgebildet, wobei der Kontaktierungsabschnitt 4 jeweils eine außen liegende Klemmfläche 40 aufweist, die in Richtung des Klemmfederarms 6 des Klemmelements 5 weist. Am Außenmantel 41 des Kontaktierungsabschnitts 4 des elektrischen Kontaktelements 1 ist ein den Außenmantel 41 umgreifendes federndes Klemmelement 5 befestigt.The electrical contact element 1 is formed from an elongated cylindrical contact pin 2, to which a solid contacting section 4 adjoins, as in the exemplary embodiments of the electrical contact elements 1 of FIG Figures 1 to 4 is shown. The contacting section 4 is designed as a connection block 9, the contacting section 4 in each case having an external clamping surface 40 which points in the direction of the clamping spring arm 6 of the clamping element 5. On the outer jacket 41 of the contacting section 4 of the electrical contact element 1, a resilient clamping element 5 encompassing the outer jacket 41 is fastened.

In den Figuren 1c, 1d, 2c, 2d, 3c, 3d, 4c, 4d sind vier Ausführungsformen von Klemmelementen 5 gezeigt. Die Klemmelemente 5 sind derart gestaltet, dass diese über einen Klemmfederarm 6 verfügen und zwar zur klemmenden Kontaktierung eines Litzenleiters zwischen der Klemmfläche 40 des Kontaktierungsabschnitts 4 des elektrischen Kontaktelements 1 und dem Kontaktierungsbereich des Klemmfederarms 6. Der Klemmfederarm 6 wird hierbei beim Einschieben eines Litzenleiters in der Fig. 1a und 1b von oben von einer Litzenleitreinführposition in eine Leiterklemmposition federnd betätigt, indem der Klemmfederarm 6 des Klemmelements 5 in Richtung zu dessen Halteabschnitt 60 betätigt wird, wird der Litzenleiter gegen die Klemmfläche 40 federkraftbeaufschlagt durch den Klemmfederarm 6 kontaktierend gedrückt. Auf diese Weise kann man eine werkezuglose Kontaktierung realisieren.In the Figures 1c, 1d , 2c, 2d , 3c, 3d , 4c, 4d four embodiments of clamping elements 5 are shown. The clamping elements 5 are designed in such a way that they have a clamping spring arm 6 for the clamping contacting of a stranded conductor between the clamping surface 40 of the contacting section 4 of the electrical contact element 1 and the Contacting area of the spring clip arm 6. The spring clip arm 6 is here when a stranded wire is inserted into the Figures 1a and 1b Resiliently actuated from above from a Litzenleiteinführposition to a conductor clamping position, in that the clamping spring arm 6 of the clamping element 5 is actuated in the direction of its holding section 60, the stranded conductor is pressed against the clamping surface 40 in a spring-loaded manner by the clamping spring arm 6. In this way one can realize a tool-free contact.

Wie in den Ausführungsbeispielen der Figuren 1 bis 4 ersichtlich, weist das federnde Klemmelement 5 neben dem Klemmfederarm 6 ferner wenigstens einen Haltearm 50 auf, mit einem endseitig ausgebildeten Umgriffabschnitt 51, so dass das federnde Klemmelement 5 mit diesen Haltearmen 50 und zwar mit dem Umgriffabschnitt 51 an dem Anschlussblock 9 des Kontaktelements 1 mit Formschluss befestigt werden können. Hierzu liegt der Umgriffabschnitt 51 an der entsprechend korrespondierenden Außenkontur des Kontaktierungsabschnitts 4 am Anschlussblock 9 des Kontaktelements 1 an.As in the embodiments of Figures 1 to 4 As can be seen, the resilient clamping element 5, in addition to the clamping spring arm 6, also has at least one holding arm 50, with a wrap-around section 51 formed at the end, so that the resilient clamping element 5 with these holding arms 50, namely with the wrap-around section 51 on the connection block 9 of the contact element 1 with a form fit can be attached. For this purpose, the encompassing section 51 rests against the correspondingly corresponding outer contour of the contacting section 4 on the connection block 9 of the contact element 1.

In den Ausführungen gemäß den Figuren 2c, 2d und 4c, 4d weist das Klemmelement 5 jeweils zwei Haltearme 50 mit einem endseitig umgebogenen Umgriffabschnitt 51 auf, wobei in den Figuren 2 der Umgriff von der gleichen Seite erfolgt, während in der Ausführung gemäß Figur 4 die zwei Haltearme 50 den Kontaktierungsabschnitt 4 des Kontaktelements 1 mit ihren Umgriffabschnitten 51 von unterschiedlichen und zwar gegenüberliegenden Seiten kommend umgreifen.In the statements according to Figures 2c, 2d and 4c, 4d the clamping element 5 has two holding arms 50 with a wrap-around section 51 bent at the ends, wherein in the Figures 2 the wraparound takes place from the same side, while in the execution according to Figure 4 the two holding arms 50 encompass the contacting section 4 of the contact element 1 with their wrap-around sections 51 coming from different and opposite sides.

In den Figuren 5 bis 7 ist eine weitere alternative Ausgestaltung eines erfindungsgemäßen elektrischen Kontaktelements 1 gezeigt, mit dem in Figur 7 erfindungsgemäß alternativ ausgebildeten Klemmelement 5. Das Klemmelement 5 verfügt wie die zuvor erläuterten Klemmelemente 5 ebenfalls über einen Haltearm 50, der abgewinkelt über eine Biegestelle 53 mit dem Klemmfederarm 6 verbunden ist. Allerdings weist der Umgriffabschnitt 51 in diesem Ausführungsbeispiel eine C-förmige Form auf. Ferner ist das elektrische Kontaktelement 1 so ausgebildet, dass der Kontaktierungsabschnitt 4 eine Kontaktkammer 43 mit einer innen liegenden Klemmfläche 40 ausbildet und der Klemmfederarm 6 des Klemmelements 5 durch eine Öffnung 44 der Kontaktkammer 43 in die Kontaktkammer 43 hineinragt. In diesem Ausführungsbeispiel würde der Litzenleiter durch die obere Öffnung 44 der Kontaktkammer 43 in die Kontaktkammer 43 hinein betätigt und drückt den Klemmfederarm 6 aus seiner in Figur 5 gezeigten Litzenleitereinführposition in eine Leiterklemmposition, bei der der Litzenleiter zwischen dem Klemmfederarm 6 und der gegenüberliegenden Klemmfläche 40 in der Kontaktkammer 43 klemmend kontaktiert wird.In the Figures 5 to 7 a further alternative embodiment of an electrical contact element 1 according to the invention is shown, with which in Figure 7 Clamping element 5 designed as an alternative according to the invention. Like the previously explained clamping elements 5, the clamping element 5 also has a holding arm 50 which is angled and connected to the clamping spring arm 6 via a bending point 53. However, the wrap-around portion 51 has a C-shaped shape in this exemplary embodiment. Furthermore, the electrical contact element 1 is designed in such a way that the contacting section 4 forms a contact chamber 43 with an internal clamping surface 40 and the clamping spring arm 6 of the clamping element 5 protrudes through an opening 44 of the contact chamber 43 into the contact chamber 43. In this embodiment, the stranded conductor would be actuated through the upper opening 44 of the contact chamber 43 into the contact chamber 43 and presses the clamping spring arm 6 out of its in Figure 5 Stranded conductor insertion position shown in a conductor clamping position in which the stranded conductor between the clamping spring arm 6 and the opposite clamping surface 40 in the contact chamber 43 is contacted in a clamping manner.

In den Figuren 8 bis 10 ist eine weitere alternative Ausgestaltung eines erfindungsgemäßen elektrischen Kontaktelements 1 gezeigt, mit dem in Figur 10 erfindungsgemäß alternativ ausgebildeten Klemmelement 5. Das Klemmelement 5 verfügt über drei Haltearme 50, 54, die abgewinkelt über eine Biegestelle 53 mit dem Klemmfederarm 6 verbunden sind. Allerdings weisen zwei Umgriffabschnitte 51 in diesem Ausführungsbeispiel eine L-förmige Form auf. Zusammen mit einem am Kontaktierungsabschnitt 4 ausgebildeten Wiederhaken 46 befestigt der dritte, endseitige Haltearm 54 das federnde Klemmelement 5 formschlüssig gemäß Figur 9 dadurch, dass das federnde Klemmelement 5 einen Federarmausschnitt 62 an dem Halteabschnitt 60 aufweist und mittels des Wiederhakens 46 einrastet. Ferner ist das elektrische Kontaktelement 1 so ausgebildet, dass der Kontaktierungsabschnitt 4 eine Kontaktkammer 43 mit einer innen liegenden Klemmfläche 40 ausbildet und der Klemmfederarm 6 des Klemmelements 5 durch eine Öffnung 44 der Kontaktkammer 43 in die Kontaktkammer 43 hineinragt. In diesem Ausführungsbeispiel würde der Litzenleiter durch die Öffnung 44 der Kontaktkammer 43 in die Kontaktkammer 43 hinein betätigt und drückt den Klemmfederarm 6 aus seiner in Figur 8 gezeigten Litzenleitereinführposition in eine Leiterklemmposition, bei der der Litzenleiter zwischen dem Klemmfederarm 6 und der gegenüberliegenden Klemmfläche 40 in der Kontaktkammer 43 klemmend kontaktiert wird.In the Figures 8 to 10 a further alternative embodiment of an electrical contact element 1 according to the invention is shown, with which in Figure 10 Clamping element 5 designed as an alternative according to the invention. Clamping element 5 has three holding arms 50, 54, which are angled connected to clamping spring arm 6 via a bending point 53. However, two wrap-around sections 51 in this exemplary embodiment have an L-shaped shape. Together with a barb 46 formed on the contacting section 4, the third, end-side holding arm 54 secures the resilient clamping element 5 in a form-fitting manner according to FIG Figure 9 in that the resilient clamping element 5 has a resilient arm cutout 62 on the holding section 60 and engages by means of the re-hook 46. Furthermore, the electrical contact element 1 is designed in such a way that the contacting section 4 forms a contact chamber 43 with an internal clamping surface 40 and the clamping spring arm 6 of the clamping element 5 protrudes through an opening 44 of the contact chamber 43 into the contact chamber 43. In this embodiment, the stranded conductor would be actuated through the opening 44 of the contact chamber 43 into the contact chamber 43 and pushes the clamping spring arm 6 out of its in Figure 8 Stranded conductor insertion position shown in a conductor clamping position, in which the stranded conductor between the clamping spring arm 6 and the opposite clamping surface 40 in the contact chamber 43 is contacted in a clamping manner.

Weiter bevorzugt ist es, wenn ein Abschnitt 4a des Kontaktierungsabschnitts 4 zwischen dem Wiederhaken 46 und einem vom Klemmelement 5 ausgebildeten, endseitigem Haltearm 54 klemmend gehalten wird.It is further preferred if a section 4a of the contacting section 4 is held in a clamping manner between the barb 46 and an end-side holding arm 54 formed by the clamping element 5.

In den Figuren 1 bis 4 weisen die elektrischen Kontaktelemente 1 im Befestigungsbereich des Kontaktierungsabschnitts 4 eine zylindermantelförmige Form auf, so dass die Umgriffabschnitte 51 mit Formschluss am Kontaktierungsabschnitt 4 anliegen.In the Figures 1 to 4 the electrical contact elements 1 in the fastening area of the contacting section 4 have a cylinder jacket-shaped shape, so that the wraparound sections 51 rest against the contacting section 4 with a form fit.

In einer ähnlichen Art und Weise wird das Klemmelement 5 gemäß Figur 7 an dem elektrischen Kontaktelement 1 gemäß Figur 6 befestigt, in dem der Umgriffabschnitt 51 um die Außenkontur des hier im Wesentlichen kastenförmigen Kontaktierungsabschnitts 4 greift.In a similar manner, the clamping element 5 according to FIG Figure 7 on the electrical contact element 1 according to Figure 6 attached, in which the wrap-around section 51 engages around the outer contour of the contacting section 4 which is essentially box-shaped here.

Die Erfindung beschränkt sich in ihrer Ausführung allerdings nicht auf das vorstehend angegebene bevorzugte Ausführungsbeispiel. Vielmehr sind eine Anzahl von Varianten und Ausführungsarten denkbar, welche von der dargestellten Lösung und dem dargestellten Verfahren auch bei grundsätzlich anders gearteter Ausführung Gebrauch macht.However, the implementation of the invention is not limited to the preferred exemplary embodiment specified above. Rather, a number of variants and types of embodiment are conceivable which make use of the solution and the method shown, even with a fundamentally different embodiment.

BezugszeichenlisteList of reference symbols

11
KontaktelementContact element
22
KontaktstiftContact pin
44th
KontaktierungsabschnittContacting section
4a4a
Abschnitt des KontaktierungsabschnittsSection of the contacting section
55
KlemmelementClamping element
66th
KlemmfederarmClamp spring arm
99
AnschlussblockConnection block
4040
KlemmflächeClamping surface
4141
AußenmantelOuter jacket
4343
KontaktkammerContact chamber
4444
Öffnungopening
4545
EinstecköffnungInsertion opening
4646
WiederhakenBarb
5050
HaltearmHolding arm
5151
UmgriffabschnittWrap-around section
5252
HaltearmendeHolding arm end
5353
BiegestelleBending point
5454
endseitiger Haltearmend holding arm
6060
HalteabschnittHolding section
6161
KlemmarmabschnittClamp arm section
6262
FederarmausschnittSpring arm cutout

Claims (5)

  1. Electrical contact element (1) comprising a contact pin (2) and a spring-action clamping element (5) which is fastened to the contact element (1) and has a clamping spring arm (6) for making clamping contact with a braided conductor end between the clamping area (40) of a contact-making section (4) of a connection block (9) of the contact element (1) and the clamping spring arm (6), wherein the clamping element (5) has at least one holding arm (50) with an end-side encompassing section (51) by way of which the spring-action clamping element (5) is fastened to the connection block (9) of the contact element (1) with a form fit, characterized in that the encompassing section (51) of the holding arm (50) encompasses the outer contour of the contact pin (2) in the fastening region of the contact-making section (4) which is designed in the form of a cylindrical casing with a round or square cross section, and the encompassing section (51) is designed in an L or C shape.
  2. Electrical contact element (1) according to Claim 1, characterized in that the shape of the encompassing section (51) represents a bent-over portion of the clamping spring arm (6) in the form of a part of an arc of a circle, preferably with a segment of part of a circle of between 90° and 180°, further preferably between 100° and 135°.
  3. Electrical contact element (1) according to one of the preceding claims, characterized in that the clamping spring arm (6) has a non-spring-action holding section (60), and a spring-action clamping arm section (61) of the clamping spring arm (6) projects in the direction of the contact pin (2).
  4. Electrical contact element (1) according to one of the preceding claims, characterized in that the holding arm or the holding arms (50) is/are designed as substantially strip-like sheet-metal tongues which are bent over at the ends and which, by way of one of their holding arm ends (52), are connected to the clamping spring arm (6) in a manner angled away by means of a bending point (53).
  5. Electrical contact element (1) according to one of the preceding claims, characterized in that two holding arms (50) encompass the contact-making section (4) of the contact element (1) by way of an encompassing section (51) from same sides or from different, preferably opposite, sides.
EP17803827.9A 2016-11-09 2017-11-09 Contact element comprising a clamping terminal for a stranded conductor Active EP3539183B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016121473 2016-11-09
PCT/EP2017/078725 WO2018087211A1 (en) 2016-11-09 2017-11-09 Contact element comprising a clamping terminal for a stranded conductor

Publications (2)

Publication Number Publication Date
EP3539183A1 EP3539183A1 (en) 2019-09-18
EP3539183B1 true EP3539183B1 (en) 2020-12-30

Family

ID=60450604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17803827.9A Active EP3539183B1 (en) 2016-11-09 2017-11-09 Contact element comprising a clamping terminal for a stranded conductor

Country Status (3)

Country Link
EP (1) EP3539183B1 (en)
DE (1) DE102017126185B4 (en)
WO (1) WO2018087211A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019113152B3 (en) * 2019-05-17 2020-10-08 Amphenol-Tuchel Electronics Gmbh Plug contact element for an electrically conductive connection
PL3859896T3 (en) * 2020-01-30 2022-07-11 Mkem, Spol S.R.O. Contact socket for a contact carrier insert of a socket

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Publication number Priority date Publication date Assignee Title
FR618171A (en) 1925-07-14 1927-03-04 Mycromet Mfg Co Improvements to conductor clamping devices for gaskets and electrical devices
DE8914460U1 (en) 1989-12-08 1990-02-08 Harting Elektronik Gmbh, 4992 Espelkamp, De
DE19718004C1 (en) 1997-04-29 1998-09-17 Harting Kgaa 1-pole contact system
DE20119530U1 (en) * 2001-12-01 2002-04-18 Harting Electric Gmbh & Co Kg Electrical contact element
DE10220108B4 (en) 2002-05-04 2004-07-08 Harting Electric Gmbh & Co. Kg Contact element with a connection for stranded wire
DE202004000418U1 (en) * 2004-01-14 2005-06-02 Bals Elektrotechnik Gmbh & Co. Kg Screwless frame clamp
DE102007024690B4 (en) * 2007-05-25 2009-06-04 Phoenix Contact Gmbh & Co. Kg Electrical connection or connection terminal
DE102008032837A1 (en) * 2008-07-14 2010-01-21 Phoenix Contact Gmbh & Co. Kg Electrical connection device
FR2936659B1 (en) * 2008-09-29 2010-11-12 Legrand France ELECTRICAL PIN INCORPORATING THE CAGE OF AN AUTOMATIC ELECTRICAL CONNECTION TERMINAL
DE202010016895U1 (en) * 2010-12-21 2012-03-22 Weidmüller Interface GmbH & Co. KG Connection device with spring clip
DE102011000979B4 (en) * 2011-02-28 2013-07-11 Phoenix Contact Gmbh & Co. Kg spring cage
DE202011100357U1 (en) * 2011-05-06 2011-07-14 Shang Tsai Wu Wiring clamp structures
DE102012002350A1 (en) * 2011-07-20 2013-01-24 Bals Elektrotechnik Gmbh & Co. Kg Contact element for an electrical connector device
DE102014116482B4 (en) * 2014-11-12 2021-09-23 Amphenol-Tuchel Electronics Gmbh Contact element

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Also Published As

Publication number Publication date
DE102017126185B4 (en) 2022-08-11
EP3539183A1 (en) 2019-09-18
DE102017126185A1 (en) 2018-05-09
WO2018087211A1 (en) 2018-05-17

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