EP0167668B1 - Contact arrangement for a relay with a high interrupting capacity - Google Patents

Contact arrangement for a relay with a high interrupting capacity Download PDF

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Publication number
EP0167668B1
EP0167668B1 EP84115046A EP84115046A EP0167668B1 EP 0167668 B1 EP0167668 B1 EP 0167668B1 EP 84115046 A EP84115046 A EP 84115046A EP 84115046 A EP84115046 A EP 84115046A EP 0167668 B1 EP0167668 B1 EP 0167668B1
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EP
European Patent Office
Prior art keywords
contact
spring
contact spring
arrangement
welded
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.)
Expired
Application number
EP84115046A
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German (de)
French (fr)
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EP0167668A1 (en
Inventor
Josef Kern
Michael Dipl.-Ing. Dittmann
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Siemens AG
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Siemens AG
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Filing date
Publication date
Priority claimed from DE19848433394 external-priority patent/DE8433394U1/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0167668A1 publication Critical patent/EP0167668A1/en
Application granted granted Critical
Publication of EP0167668B1 publication Critical patent/EP0167668B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H01H11/043—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion by resistance welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H01H2011/047—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion on both sides of the contact body portion

Definitions

  • the invention relates to a contact arrangement for a relay with high switching power, in which a movable contact spring as a center contact spring faces two mating contact elements and carries a contact piece of high conductivity on both sides of the free end, one of which is welded directly to a connecting line.
  • DE-U-81 09 089 describes a similarly constructed contact arrangement, which, however, has only one mating contact element. There the contact piece of the contact spring is riveted in a breakthrough through the material of the contact spring and directly connected to a connecting line on the opposite side.
  • a similar contact arrangement is described in DE-C-2927879. There, a flexible strand is passed through an opening in the contact spring and is itself formed into a contact piece at its end.
  • this power supply line should have the lowest possible rigidity and thus the smallest possible thickness, it must be correspondingly wide for carrying large currents, which must be taken into account in the relay construction for reasons of insulation spacing.
  • this sheet metal power supply can require a complicated shape; even a force on the center contact spring will not be completely switched off.
  • a power supply which lies between the contact spring and the contact piece, cannot be designed as a strand;
  • stranded current leads are desirable in the case of heavy current relays because of their good deformability with a large conductor cross section.
  • the object of the invention is to improve a contact arrangement of the type mentioned at the outset in such a way that a direct connection of the connecting line to a contact piece of the center contact spring is made possible in a particularly simple manner, in particular a stranded wire can also be used as the connecting line.
  • this object is achieved in that the contact piece welded to the connecting line projects beyond the width of the contact spring end and the opposite contact piece, and in that the connecting line is welded to the protruding part of the contact piece in question.
  • the center contact spring With the design of the center contact spring according to the invention with the one contact piece projecting beyond the spring, it is possible to connect this contact piece directly to a connecting wire, so that the contact spring itself does not carry the switching current and can therefore be made from cheaper spring steel. Also for the opposite, shorter contact piece, the contact spring does not form a large resistance, since the current flows from the connecting wire over the longer contact piece and then through the relatively thin spring with a large cross section.
  • the resistance via the spring can also be reduced by the fact that at least one of the contact pieces has an attachment with which it is directly connected to the other contact piece through a hole in the central contact spring.
  • This configuration of the contact arrangement So both contact pieces are directly conductively connected to each other, while the extended contact piece is in turn welded to the connecting line, for example a stranded wire.
  • the resistance value of the center contact spring which expediently consists of spring steel of relatively low conductivity, is therefore irrelevant.
  • both contact pieces In principle, it would be possible to equip both contact pieces with an extension, the two extensions being able to engage in the hole in the center contact spring from both sides. However, it is easier to equip only one of the contact pieces with an extension which corresponds approximately to the thickness of the central contact spring.
  • the smaller of the two contact pieces is expediently formed in a rivet shape and inserted with a corresponding extension through the hole in the center contact spring. In this area, the two contact pieces are expediently welded directly to one another and also to the central contact spring.
  • the contact arrangement shown in FIG. 1 is part of a relay, as is generally shown, for example, in the German utility model 83 25 986 with its magnet system.
  • a contact spring 2 which also serves as an armature return spring, is attached to the armature 1 of such a magnet system.
  • the free, cross-sectionally reduced end 2a of this contact spring 2 serves as a center contact spring in an alternating contact arrangement.
  • the contact spring 2 can be switched between two mating contact elements 3 and 4. Each of the two mating contact elements is connected via a connecting lug, e.g. B. 5, anchored in a base or base body, not shown.
  • Contact pieces 6 and 7 are applied to the mating contact elements as riveted or welded contacts.
  • a further connection element 8 is anchored in the base body, from which a strand 9 leads directly to the end 2a of the contact spring 2.
  • a contact piece 10 or 11 is welded on both sides, the contact piece 11 projecting beyond the width of the contact spring at its end 2a and also beyond the width of the contact piece 10 and thus a free surface 12 for fastening the Strand 9 forms.
  • the switching current is thus conducted from the contact piece 11 directly to the connection element 8 via this copper wire 9.
  • the current to the contact piece 10 can also flow from the contact piece 11 via the thin material of the spring 2 over the entire surface of the contact piece 10 without any appreciable resistance.
  • the two contact pieces 10 and 11 are separated from the same strip material with their different lengths and welded onto the contact spring 2 or its free end 2a from both sides.
  • This strip material of the two contact pieces 10 and 11 consists of copper and is plated with a noble metal layer 13.
  • the contact spring 2 itself is designed as an inexpensive steel spring with sufficient electrical conductivity and good spring properties to achieve the required contact pressure.
  • both contact pieces consist, for example, of copper or a copper alloy and are plated with a noble metal layer 13 or 23. But you could also consist of solid contact material, e.g. B. AgNi 0.15.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Contacts (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Description

Die Erfindung bezieht sich auf eine Kontaktanordnung für ein Relais hoher Schaltleistung, bei dem eine bewegliche Kontaktfeder als Mittelkontaktfeder zwei Gegenkontaktelementen gegenübersteht und auf dem freien Ende beiderseits je ein Kontaktstück hoher Leitfähigkeit trägt, wovon das eine unmittelbar mit einer Anschlußleitung verschweißt ist.The invention relates to a contact arrangement for a relay with high switching power, in which a movable contact spring as a center contact spring faces two mating contact elements and carries a contact piece of high conductivity on both sides of the free end, one of which is welded directly to a connecting line.

Zum Schalten hoher Ströme, beispielsweise in Kraftfahrzeugrelais, werden im Schaltkreis große Leitungsquerschnitte aus elektrisch gut leitendem Werkstoff benötigt, um den Spannungsabfall und die Erwärmung klein zu halten. Da bewegliche Kontaktfedern in derartigen Relais vielfach diesen Anforderungen aufgrund ihres Werkstoffes und ihres relativ geringen Querschnitts nicht genügen, ist man bereits dazu übergegangen, den Strom von einem Anschlußelement über eine Kupferlitze unmittelbar an die Kontaktstelle zu führen, wobei die Kupferlitze direkt mit dem Kontaktstück verbunden wird.To switch high currents, for example in motor vehicle relays, large cable cross-sections made of electrically well-conducting material are required in the circuit in order to keep the voltage drop and the heating small. Since movable contact springs in such relays often do not meet these requirements due to their material and their relatively small cross section, it has already started to conduct the current from a connection element via a copper wire directly to the contact point, the copper wire being connected directly to the contact piece .

In dem DE-U-81 09 089 ist beispielsweise eine ähnlich aufgebaute Kontaktanordnung beschrieben, die allerdings nur ein Gegenkontaktelement aufweist. Dort ist das Kontaktstück der Kontaktfeder nietartig in einem Durchbruch durch das Material der Kontaktfeder geführt und auf der gegenüberliegenden Seite unmittelbar mit einer Anschlußleitung verbunden.DE-U-81 09 089, for example, describes a similarly constructed contact arrangement, which, however, has only one mating contact element. There the contact piece of the contact spring is riveted in a breakthrough through the material of the contact spring and directly connected to a connecting line on the opposite side.

Eine ähnliche Kontaktanordnung ist in der DE-C-2927879 beschrieben. Dort ist eine flexible Litze durch einen Durchbruch der Kontaktfeder geführt und an ihrem Ende selbst zum Kontaktstück geformt.A similar contact arrangement is described in DE-C-2927879. There, a flexible strand is passed through an opening in the contact spring and is itself formed into a contact piece at its end.

In diesen beiden Fällen handelt es sich jedoch um Kontaktanordnungen mit nur einem Gegenkontaktelement, so daß lediglich ein Schließer bzw. ein Öffner gebildet werden kann. Da bei diesen Konstruktionen die Anschlußleitung jeweils an die dem Kontaktstück gegenüberliegende Seite der Kontaktfeder herangeführt ist, bleibt kein Platz für ein zweites Kontaktstück, welches für einen Umschaltkontakt benötigt würde. Wenn deshalb bei derartigen Relais ein Umschaltkontakt mit zwei gegenüberliegenden Kontaktstücken auf der Kontaktfeder benötigt wurde, mußte die Anschlußleitung bisher an die Kontaktfeder selbst angeschweißt werden. Das bedeutete aber, daß die Kontaktfeder aus einem teueren Werkstoff, nämlich einer Kupferlegierung mit Federeigenschaften, hergestellt werden mußte, wollte man nicht einen hohen Widerstand im Schaltkreis in Kauf nehmen.In these two cases, however, there are contact arrangements with only one mating contact element, so that only one make contact or one break contact can be formed. Since in these constructions the connecting line is led to the side of the contact spring opposite the contact piece, there is no space for a second contact piece which would be required for a changeover contact. If a changeover contact with two opposing contact pieces on the contact spring was therefore required in such relays, the connecting line had previously to be welded to the contact spring itself. However, this meant that the contact spring had to be made of an expensive material, namely a copper alloy with spring properties, if one did not want to accept a high resistance in the circuit.

Dieses Problem mit einem Umschaltkontakt ist auch bei einer Kontaktanordnung der eingangs genannten Art. die aus der DE-A-1 665 958 bekannt ist, nur zum Teil gelöst. Dort ist zwar eine schlingenförmige Stromzuführung unmittelbar mit einem Kontaktstück der Mittelkontaktfeder in Verbindung gebracht, doch ist dies bei der dortigen Konstruktion nur dadurch möglich, daß die Stromzuführung aus einem dünnen Biech besteht und flächig auf der Mittelkontaktfeder aufliegend zwischen dem Material der Mittelkontaktfeder und dem Kontaktstück angeordnet ist. Die Stromführung selbst ist beispielsweise mit der Mittelkontaktfeder verschweißt oder vernietet. Da in dem dortigen Fall die Materialdicke der Stromzuführung den Kontaktabstand beeinflußt, muß diese Stromzuführung mit genauer Materialstärke hergestellt und auch sehr genau mit der Mittelkontaktfeder verbunden werden, bevor das eigentliche Kontaktstück aufgesetzt werden kann. Da diese Stromzuführung eine möglichst geringe Steifigkeit und damit eine möglichst geringe Dicke aufweisen soll, muß sie zum Führen großer Ströme entsprechend breit sein, was bei der Relaiskonstruktion schon aus Gründen der Isolierabstände berücksichtigt werden muß. Je nachdem, wo sich der zugehörige Anschlußstift befindet, kann diese Blech-Stromzuführung eine komplizierte Form erfordern ; auch eine Krafteinwirkung auf die Mittelkontaktfeder wird nicht ganz auszuschalten sein. Jedenfalls kann eine solche Stromzuführung, die zwischen Kontaktfeder und Kontaktstück liegt, nicht als Litze ausgeführt werden ; gerade litzenförmige Stromzuführungen sind aber bei Starkstromrelais wegen ihrer guten Verformbarkeit bei großem Leiterquerschnitt erwünscht.This problem with a changeover contact is only partially solved even with a contact arrangement of the type mentioned at the outset, which is known from DE-A-1 665 958. There, a loop-shaped power supply is directly connected to a contact piece of the center contact spring, but this is only possible with the construction there that the power supply consists of a thin sheet and is arranged lying flat on the center contact spring between the material of the center contact spring and the contact piece is. The current supply itself is welded or riveted to the center contact spring, for example. Since in this case the material thickness of the power supply influences the contact distance, this power supply must be made with an exact material thickness and also very precisely connected to the center contact spring before the actual contact piece can be put on. Since this power supply line should have the lowest possible rigidity and thus the smallest possible thickness, it must be correspondingly wide for carrying large currents, which must be taken into account in the relay construction for reasons of insulation spacing. Depending on where the associated pin is located, this sheet metal power supply can require a complicated shape; even a force on the center contact spring will not be completely switched off. In any case, such a power supply, which lies between the contact spring and the contact piece, cannot be designed as a strand; However, stranded current leads are desirable in the case of heavy current relays because of their good deformability with a large conductor cross section.

Aufgabe der Erfindung ist es, eine Kontaktanordnung der eingangs genannten Art so zu ver- bessern, daß eine unmittelbare Verbindung der Anschlußleitung mit einem Kontaktstück der Mittelkontaktfeder besonders einfach ermöglicht wird, wobei insbesondere auch eine Litze als Anschlußleitung verwendet werden kann.The object of the invention is to improve a contact arrangement of the type mentioned at the outset in such a way that a direct connection of the connecting line to a contact piece of the center contact spring is made possible in a particularly simple manner, in particular a stranded wire can also be used as the connecting line.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß das mit der Anschlußleitung verschweißte Kontaktstück über die Breite des Kontaktfederendes und des gegenüberliegenden Kontaktstücks hinausragt, und daß die Anschlußleitung an den überstehenden Teil des betreffenden Kontaktstücks geschweißt ist.According to the invention, this object is achieved in that the contact piece welded to the connecting line projects beyond the width of the contact spring end and the opposite contact piece, and in that the connecting line is welded to the protruding part of the contact piece in question.

Mit der erfindungsgemäßen Gestaltung der Mittelkontaktfeder mit dem einen über die Feder hinausragenden Kontaktstück ist es möglich, dieses Kontaktstück unmittelbar mit einer Anschlußlitze zu verbinden, so daß die Kontaktfeder selbst den Schaltstrom nicht führt und somit aus billigerem Federstahl hergestellt werden kann. Auch für das gegenüberliegende, kürzere Kontaktstück bildet die Kontaktfeder keinen großen Widerstand, da hierbei der Strom von der Anschlußlitze über das längere Kontaktstück und dann durch die verhältnismäßig dünne Feder mit großem Querschnitt fließt.With the design of the center contact spring according to the invention with the one contact piece projecting beyond the spring, it is possible to connect this contact piece directly to a connecting wire, so that the contact spring itself does not carry the switching current and can therefore be made from cheaper spring steel. Also for the opposite, shorter contact piece, the contact spring does not form a large resistance, since the current flows from the connecting wire over the longer contact piece and then through the relatively thin spring with a large cross section.

In weiterer Ausgestaltung kann auch der Widerstand über die Feder noch dadurch verringert werden, daß zumindest eines der Kontaktstücke einen Ansatz aufweist, mit dem es durch ein Loch in der Mittelkontaktfeder hindurchgreifend unmittelbar mit dem anderen Kontaktstück verbunden ist. Durch diese Ausgestaltung der Kontaktanordnung sind also beide Kontaktstücke unmittelbar miteinander leitend verbunden, während das verlängerte Kontaktstück wiederum mit der Anschlußleitung, beispielsweise einer Litze, verschweißt ist. Der Widerstandswert der Mittelkontaktfeder, die zweckmäßigerweise aus einem Federstahl relativ geringer Leitfähigkeit besteht, spielt somit keine Rolle.In a further embodiment, the resistance via the spring can also be reduced by the fact that at least one of the contact pieces has an attachment with which it is directly connected to the other contact piece through a hole in the central contact spring. This configuration of the contact arrangement So both contact pieces are directly conductively connected to each other, while the extended contact piece is in turn welded to the connecting line, for example a stranded wire. The resistance value of the center contact spring, which expediently consists of spring steel of relatively low conductivity, is therefore irrelevant.

Grundsätzlich wäre es möglich, beide Kontaktstücke mit einem Ansatz auszustatten, wobei die beiden Ansätze von den beiden Seiten her in das Loch der Mittelkontaktfeder eingreifen könnten. Es ist jedoch einfacher, lediglich eines der Kontaktstücke mit einem Ansatz auszustatten, der etwa der Dicke der Mittelkontaktfeder entspricht. Zweckmäßigerweise wird das kleinere der beiden Kontaktstücke nietförmig ausgebildet und mit einem entsprechenden Ansatz durch das Loch der Mittelkontaktfeder gesteckt. Die beiden Kontaktstücke sind in diesem Bereich zweckmäßigerweise unmittelbar miteinander und auch mit der Mittelkontaktfeder verschweißt.In principle, it would be possible to equip both contact pieces with an extension, the two extensions being able to engage in the hole in the center contact spring from both sides. However, it is easier to equip only one of the contact pieces with an extension which corresponds approximately to the thickness of the central contact spring. The smaller of the two contact pieces is expediently formed in a rivet shape and inserted with a corresponding extension through the hole in the center contact spring. In this area, the two contact pieces are expediently welded directly to one another and also to the central contact spring.

Die Erfindung wird nachfolgend an Ausführungsbeispielen anhand der Zeichnung näher erläutert. Es zeigt

  • Fig. 1 eine erfindungsgemäß gestaltete Kontaktanordnung,
  • Fig. 2 eine Detaildarstellung des freien Endes der Kontaktfeder mit den beiden aufzubringenden Kontaktstücken,
  • Fig. 3 eine Detaildarstellung des freien Endes der Mittelkontaktfeder mit einem gegenüber Fig. 2 abgewandelten Kontaktstück,
  • Fig. 4 einen Querschnitt durch das Ende der Mittelkontaktfeder mit den beiden aufgebrachten Kontaktstücken von Fig. 3.
The invention is explained in more detail below using exemplary embodiments with reference to the drawing. It shows
  • 1 shows a contact arrangement designed according to the invention,
  • 2 is a detailed view of the free end of the contact spring with the two contact pieces to be applied,
  • 3 shows a detailed view of the free end of the center contact spring with a contact piece modified compared to FIG. 2,
  • 4 shows a cross section through the end of the center contact spring with the two attached contact pieces from FIG. 3.

Die in Fig. 1 dargestellte Kontaktanordnung ist Teil eines Relais, wie es beispielsweise in dem deutschen Gebrauchsmuster 83 25 986 mit seinem Magnetsystem allgemein dargestellt ist. An dem Anker 1 eines derartigen Magnetsystems ist eine Kontaktfeder 2 befestigt, weiche auch als Ankerrückstellfeder dient. Das freie, im Querschnitt verringerte Ende 2a dieser Kontaktfeder 2 dient als Mittelkontaktfeder in einer Wechselkontaktanordnung. Die Kontaktfeder 2 ist dabei zwischen zwei Gegenkontaktelementen 3 und 4 umschaltbar. Jedes der beiden Gegenkontaktelemente ist über eine Anschlußfahne, z. B. 5, in einem nicht dargestellten Sockel oder Grundkörper verankert. Auf den Gegenkontaktelementen sind Kontaktstücke 6 bzw. 7 als Niet- oder Schweißkontakte aufgebracht.The contact arrangement shown in FIG. 1 is part of a relay, as is generally shown, for example, in the German utility model 83 25 986 with its magnet system. A contact spring 2, which also serves as an armature return spring, is attached to the armature 1 of such a magnet system. The free, cross-sectionally reduced end 2a of this contact spring 2 serves as a center contact spring in an alternating contact arrangement. The contact spring 2 can be switched between two mating contact elements 3 and 4. Each of the two mating contact elements is connected via a connecting lug, e.g. B. 5, anchored in a base or base body, not shown. Contact pieces 6 and 7 are applied to the mating contact elements as riveted or welded contacts.

Für die Mittelkontaktfeder 2 ist im Grundkörper ein weiteres Anschlußelement 8 verankert, von dem aus eine Litze 9 direkt zum Ende 2a der Kontaktfeder 2 führt. Auf diesem Ende 2a der Kontaktfeder ist zu beiden Seiten jeweils ein Kontaktstück 10 bzw. 11 aufgeschweißt, wobei das Kontaktstück 11 über die Breite der Kontaktfeder an deren Ende 2a und auch über die Breite des Kontaktstücks 10 hinausragt und damit eine freie Oberfläche 12 zur Befestigung der Litze 9 bildet. Über diese Kupferlitze 9 wird somit der Schaltstrom vom Kontaktstück 11 direkt zum Anschlußelement 8 geführt. Auch zum Kontaktstück 10 kann der Strom vom Kontaktstück 11 über das dünne Material der Feder 2 über die gesamte Fläche des Kontaktstücks 10 ohne nennenswerten Widerstand fließen. Wie aus Fig. 2 im einzelnen ersichtlich ist, werden die beiden Kontaktstücke 10 und 11 von dem selben Bandmaterial mit ihren verschiedenen Längen abgetrennt und von beiden Seiten her auf die Kontaktfeder 2 bzw. deren freies Ende 2a aufgeschweißt. Dieses Bandmaterial der beiden Kontaktstücke 10 und 11 besteht aus Kupfer und ist mit einer Edelmetallschicht 13 plattiert. Die Kontaktfeder 2 selbst wird, wie bereits angedeutet, als kostengünstige Stahlfeder mit ausreichender elektrischer Leitfähigkeit und guten Federeigenschaften zur Erreichung des erforderlichen Kontaktdruckes ausgeführt.For the central contact spring 2, a further connection element 8 is anchored in the base body, from which a strand 9 leads directly to the end 2a of the contact spring 2. On this end 2a of the contact spring, a contact piece 10 or 11 is welded on both sides, the contact piece 11 projecting beyond the width of the contact spring at its end 2a and also beyond the width of the contact piece 10 and thus a free surface 12 for fastening the Strand 9 forms. The switching current is thus conducted from the contact piece 11 directly to the connection element 8 via this copper wire 9. The current to the contact piece 10 can also flow from the contact piece 11 via the thin material of the spring 2 over the entire surface of the contact piece 10 without any appreciable resistance. As can be seen in detail from FIG. 2, the two contact pieces 10 and 11 are separated from the same strip material with their different lengths and welded onto the contact spring 2 or its free end 2a from both sides. This strip material of the two contact pieces 10 and 11 consists of copper and is plated with a noble metal layer 13. As already indicated, the contact spring 2 itself is designed as an inexpensive steel spring with sufficient electrical conductivity and good spring properties to achieve the required contact pressure.

In den Fig. 3 und 4 ist ein etwas abgewandeltes Ausführungsbeispiel dargestellt. Dort werden die beiden Kontaktstücke 20 und 11 von beiden Seiten auf das freie Ende 2a der Kontaktfeder 2 aufgebracht. Das Kontaktstück 20 besitzt nietförmige Gestalt mit einem Schaft oder Ansatz 21, der in seiner Länge etwa der Dicke der Kontaktfeder 2 entspricht. Dieser Schaft 21 wird in ein Loch 22 der Kontaktfeder 2 eingesteckt, während von der anderen Seite der Kontaktfeder 2 her das von einem Bandmaterial abgeschnittene Kontaktstück 11 aufgebracht wird. Die beiden Kontaktstücke liegen im Bereich des Loches 22 unmittelbar aneinander und werden miteinander verschweißt. Beide Kontaktstücke bestehen auch hier beispielsweise aus Kupfer bzw. einer Kupferlegierung und sind mit einer Edelmetallschicht 13 bzw. 23 plattiert. Sie könnten aber auch aus massiven Kontaktmaterial bestehen, z. B. AgNi 0,15.3 and 4, a somewhat modified embodiment is shown. There, the two contact pieces 20 and 11 are applied from both sides to the free end 2a of the contact spring 2. The contact piece 20 has a rivet shape with a shaft or extension 21, which corresponds in length to the thickness of the contact spring 2. This shaft 21 is inserted into a hole 22 of the contact spring 2, while the contact piece 11 cut from a strip material is applied from the other side of the contact spring 2. The two contact pieces lie directly against one another in the region of the hole 22 and are welded together. Here, too, both contact pieces consist, for example, of copper or a copper alloy and are plated with a noble metal layer 13 or 23. But you could also consist of solid contact material, e.g. B. AgNi 0.15.

Claims (6)

1. A contact arrangement for a relay with a high switching capacity in which a movable contact spring (2) is arranged, as a central contact spring, opposite two counter-contact elements (3, 4) and at its free end is provided on each side with a respective contact member (10, 11) of high conductivity, one of which is welded directly to a connecting lead (9), characterised in that the contact member (11) which is welded to the connecting lead projects beyond the width of the end (2a) of the contact spring and of the opposite contact member (10), and that the connecting lead (9) is welded to the projecting part (12) of the contact component (11) in question.
2. A contact arrangement as claimed in Claim 1, characterised in that the contact members (10, 11) are formed by a copper strip which is plated with noble metal (13).
3. A contact arrangement as claimed in Claim 1 or 2, characterised in that the contact spring (2) consists of a steel alloy with good spring properties.
4. A contact arrangement as claimed in Claim 1, characterised in that at least one of the contact members (20) has a projection (21) by means of which it extends through an aperture (22) in the central contact spring and is directly connected to the other contact member (11).
5. A contact arrangement as claimed in Claim 4, characterised in that the smaller of the two contact members (20) is rivet-shaped and is provided with the projection (21) which extends through the aperture (22) in the central contact spring and whose length corresponds to the thickness of the central contact spring (2).
6. An arrangement as claimed in Claim 4 or 5, characterised in that the two contact members (11, 20) are welded directly to one another.
EP84115046A 1984-05-09 1984-12-10 Contact arrangement for a relay with a high interrupting capacity Expired EP0167668B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3417165 1984-05-09
DE3417165 1984-05-09
DE19848433394 DE8433394U1 (en) 1984-11-14 1984-11-14 Contact arrangement for a relay with high switching capacity
DE8433394U 1984-11-14

Publications (2)

Publication Number Publication Date
EP0167668A1 EP0167668A1 (en) 1986-01-15
EP0167668B1 true EP0167668B1 (en) 1988-09-07

Family

ID=25821045

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115046A Expired EP0167668B1 (en) 1984-05-09 1984-12-10 Contact arrangement for a relay with a high interrupting capacity

Country Status (3)

Country Link
US (1) US4647743A (en)
EP (1) EP0167668B1 (en)
DE (1) DE3473963D1 (en)

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FR2617632A1 (en) * 1987-07-01 1989-01-06 Telemecanique Electrique CONTACT LEVER FOR ELECTRICAL DEVICE SWITCH
DE3935773A1 (en) * 1989-10-24 1991-04-25 Siemens Ag METHOD FOR PRODUCING A CONTACT DEVICE
DE58907255D1 (en) * 1989-10-24 1994-04-21 Siemens Ag CONTACT ARRANGEMENT FOR A CHANGER RELAY.
DE4103584A1 (en) * 1990-02-09 1991-08-22 Fuji Electric Co Ltd Small line of earthing switch with coupling conductor on frame - has flexible conductive wire as parallel connection for movable contact and coupling conductor
DE4204641C2 (en) * 1992-02-15 1994-09-22 Hella Kg Hueck & Co Contact set
US5249978A (en) * 1992-07-15 1993-10-05 International Business Machines Corporation High power connector
DE102008039705B4 (en) 2008-08-26 2018-05-30 Te Connectivity Germany Gmbh Contact assembly for a relay, relay with contact assembly and method for mounting a relay
DE102008039704A1 (en) * 2008-08-26 2010-03-04 Tyco Electronics Amp Gmbh Contact arrangement with bent strand, relay with contact arrangement and method for mounting a relay
CN106463281A (en) * 2014-01-20 2017-02-22 赛特勒电子有限公司 Contact arrangement for high power relay

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DE413068C (en) * 1925-05-06 Mix & Genest Telephon Und Tele Process for the double-sided attachment of contact pieces to contact springs
US1560308A (en) * 1923-10-19 1925-11-03 Gen Electric Electrical switch
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US3339048A (en) * 1965-10-14 1967-08-29 Texas Instruments Inc Switch having improved multiple blade assembly
DE1665958A1 (en) * 1967-06-12 1971-04-08 Siemens Ag Heavy-duty contact arrangement
US3472984A (en) * 1967-08-01 1969-10-14 Us Navy Switch for high energy circuits utilizing contact bounce reduction
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Also Published As

Publication number Publication date
EP0167668A1 (en) 1986-01-15
US4647743A (en) 1987-03-03
DE3473963D1 (en) 1988-10-13

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