EP0046576B1 - Contact arrangement - Google Patents

Contact arrangement Download PDF

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Publication number
EP0046576B1
EP0046576B1 EP81106491A EP81106491A EP0046576B1 EP 0046576 B1 EP0046576 B1 EP 0046576B1 EP 81106491 A EP81106491 A EP 81106491A EP 81106491 A EP81106491 A EP 81106491A EP 0046576 B1 EP0046576 B1 EP 0046576B1
Authority
EP
European Patent Office
Prior art keywords
carrier
pressure springs
contact
arrangement according
contact arrangement
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
EP81106491A
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German (de)
French (fr)
Other versions
EP0046576A2 (en
EP0046576A3 (en
Inventor
Bruno Ing. grad. Jägle
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.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0046576A2 publication Critical patent/EP0046576A2/en
Publication of EP0046576A3 publication Critical patent/EP0046576A3/en
Application granted granted Critical
Publication of EP0046576B1 publication Critical patent/EP0046576B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H2050/028—Means to improve the overall withstanding voltage, e.g. creepage distances

Definitions

  • the invention relates to a contact arrangement with interacting movable contact elements and fixed contact elements, in which the movable contact elements are mounted on a carrier and are respectively biased in the direction of the associated fixed contact elements by means of pressure springs.
  • contact elements for example contact spring sets for relays
  • resilient contact elements are often used which, due to their own elasticity, store forces and can thus generate the desired contact pressure.
  • no elongated contact springs are used for reasons of dielectric strength.
  • rigid contact elements are used for switching, which are preloaded by their own pressure springs. This is especially the case with so-called bridge contact sets, in which two fixed mating contacts are connected by a common movable contact bridge during the switching process in order to achieve large contact distances.
  • the pressure springs are mostly designed as coil springs in order to achieve a soft spring characteristic in a confined space.
  • these springs are usually arranged in their own chambers of a carrier containing the contact elements or bridge contacts. This means that not only a relatively large number of individual parts must be manufactured and assembled, but that special configurations must also be provided on these parts to ensure the dielectric strength.
  • Object of the invention is to design a contact arrangement of the type mentioned at the outset in such a way that the dielectric strength between the individual contact elements can be achieved in a simpler manner.
  • the parts of the contact arrangement should be as simple to manufacture as possible; it should also be possible to keep the number of individual parts low.
  • this object is achieved in that the pressure springs connected to the carrier of the movable contact elements consist of elastic plastic.
  • These pressure springs can, for example, have a much simpler design as leaf springs than the commonly used axle springs. Also special insulating shields on the support are not required for the pressure springs.
  • the plastic springs can be produced in one operation, for example by injection molding, which in turn simplifies production compared to the production of metal springs. This already has advantages, even if the individual springs are manufactured as separate parts and fastened to the carrier by plug-in fastening or in some other way, such as, for example, ultrasonic welding or the like.
  • each case two pressure springs attached symmetrically to the support act with their free ends on a movable contact element which is displaceably mounted on the support as a contact bridge.
  • the carrier can have a central web, the movable contact elements being guided in openings in this central web.
  • the pressure springs are expediently fastened to the side of the central web.
  • crossbars can be provided on the carrier parallel to the contact elements, at the outer ends of which the pressure springs are molded as leaf springs to be run on the contact elements.
  • the pressure springs designed as leaf springs each form an acute angle between their fastening end and their free end. In this way, a particularly long spring length and thus a soft spring characteristic can be achieved in a narrow space.
  • the cross section of the pressure springs between the fastening point and the free end is designed to be uneven in accordance with the course of the bending stress. So can by increasing spring thickness or spring width from the actuation point, d. H. from the free end to the point where the maximum bending moment occurs, achieve approximately the same bending stress over the entire length of the spring.
  • a return spring which is of the same design as the pressure springs is also provided on the carrier, possibly made of plastic, if necessary.
  • a tough elastic plastic is used for the pressure springs or the return spring, which is as small as possible Owns relaxation. In this way, a lifespan comparable to that of the metal springs can be guaranteed.
  • Polyamide with fillers has proven to be particularly expedient, polyimide (trade name aramid fiber), glass fibers or even carbons being suitable as the filler.
  • FIG. 1 shows a contact bridge carrier 1 which can be used as a slide in a bridge contact set according to FIG. 2.
  • fixed contact elements 3 are anchored in a housing 2 and cooperate with the contact bridges 4 of the carrier 1.
  • the contact bridges 4 are mounted in recesses 5a of a central web 5. They are each biased against a stop 5b by pressure springs 6.
  • these contact bridges 4 are brought into connection with the contact elements 3, the contact pressure being determined by the pressure springs 6.
  • the pressure springs 6 are molded onto the central web 5 of the carrier 1, in each case in pairs in mirror images on both sides of the central web. This ensures a symmetrical pressure of the contact bridges 4, which are also arranged symmetrically.
  • the individual pressure springs are designed as leaf springs, which form an acute angle from their origin 6a on the central web to their free ends 6b abutting the contact bridges. In this way, a long spring length and a soft spring characteristic is achieved.
  • two symmetrically arranged return springs 7 are also formed, which correspond in shape to the pressure springs 6. They have the task of supporting the carrier 1 in the base body and resetting it after actuation:
  • the pressure springs 6 and the rear part springs 7 are each isolated from Ku p ststoff and to be mounted on the central web 5 of the carrier 1 or plugged with a weld joint.
  • the contact bridges 4 must be attached to the carrier anyway. In terms of production, however, it is expedient to manufacture the individual springs in one piece with the support 1 or at least with a part of the support 1, namely the central piece 5. If, as in the present example, the carrier has a central web and a cover plate 8 over the contact bridges, it is expedient to design the carrier in two parts, so that one part can be injected more easily with the springs. The other part, in the present case the cover plate 8, can then be connected to the central web 5 in a simple manner.
  • the carrier consists of the central web 5, which is shown in FIGS. 3 and 4 in two views, and the cover plate 5 according to FIG. 5.
  • the central web 5 with the molded-on pressure springs 6 or return springs 7 has recesses 5a into which the contact bridges 4 are inserted.
  • 5 fastening webs 9 with hook-shaped ends 10 are provided on the central webs, which can be snapped into recesses 11 in the cover plate 8.
  • additional elevations 12 are formed on the plate 8, which come to rest on the contact bridges 4 when the central web 5 is connected to the plate 8 (FIG. 2).
  • a driver 13 on the plate 8 is used in the usual way to be able to operate the carrier 1 as a slide by the armature of a magnet system, not shown.
  • Fig. 6 shows a modification of the carrier of Fig. 1.
  • This carrier 21 is essentially constructed with a cover plate and central web as the carrier of Fig. 1. Only the springs are designed somewhat differently.
  • the carrier 21 has on both sides of the central web 22 extending side webs 23, on the outer ends 23a, the pressure springs 24 and the return springs 25 are formed.
  • these pressure springs 24 or return springs 25 are designed as simple leaf springs running obliquely inwards. They are thus simpler in shape than the pressure springs 6 of FIG. 1 which form an acute angle.

Landscapes

  • Push-Button Switches (AREA)
  • Springs (AREA)
  • Contacts (AREA)

Description

Die Erfindung bezieht sich auf eine Kontaktanordnung mit zusammenwirkenden beweglichen Kontaktelementen und feststehenden Kontaktelementen, bei der die beweglichen Kontaktelemente auf einem Träger gelagert und jeweils mittels Andruckfedern in Richtung auf die zugehörigen feststehenden Kontaktelemente vorgespannt sind.The invention relates to a contact arrangement with interacting movable contact elements and fixed contact elements, in which the movable contact elements are mounted on a carrier and are respectively biased in the direction of the associated fixed contact elements by means of pressure springs.

Bei Kontaktanordnungen, beispielsweise Kontaktfedersätzen für Relais, werden vielfach federnde Kontaktelemente verwendet, die aufgrund ihrer eigenen Elastizität Kräfte speichern und so den gewünschten Kontaktdruck erzeugen können. Bei bestimmten Anwendungsfällen, insbesondere bei Starkstromrelais, werden jedoch aus Gründen der Spannungsfestigkeit keine langgestreckten Kontaktfedern verwendet. In diesen Fällen dienen zum Schalten starre Kontaktelemente, die ihre Vorspannung durch eigene Andruckfedern erhalten. Namentlich ist dies der Fall bei sogenannten Brückenkontaktsätzen, bei denen zur Erreichung großer Kontaktabstände jeweils zwei feststehende Gegenkontakte durch eine gemeinsame bewegliche Kontaktbrücke beim Schaltvorgang verbunden werden.In the case of contact arrangements, for example contact spring sets for relays, resilient contact elements are often used which, due to their own elasticity, store forces and can thus generate the desired contact pressure. In certain applications, particularly in the case of high-current relays, no elongated contact springs are used for reasons of dielectric strength. In these cases, rigid contact elements are used for switching, which are preloaded by their own pressure springs. This is especially the case with so-called bridge contact sets, in which two fixed mating contacts are connected by a common movable contact bridge during the switching process in order to achieve large contact distances.

Die Andruckfedern sind in diesen Fällen meist als Schraubenfedern ausgebildet, um eine weiche Federcharakteristik auf engem Raum zu erreichen. Diese Federn sind aus Gründen der Spannungsfestigkeit üblicherweise in eigenen Kammern eines die Kontaktelemente bzw. Brückenkontakte enthaltenden Trägers angeordnet. Das bedeutet, daß nicht nur verhältnismäßig viele Einzelteile hergestellt und montiert werden müssen, sondern daß an diesen Teilen noch spezielle Ausgestaltungen zur Gewährleistung der Spannungsfestigkeit vorgesehen werden müssen.In these cases, the pressure springs are mostly designed as coil springs in order to achieve a soft spring characteristic in a confined space. For reasons of dielectric strength, these springs are usually arranged in their own chambers of a carrier containing the contact elements or bridge contacts. This means that not only a relatively large number of individual parts must be manufactured and assembled, but that special configurations must also be provided on these parts to ensure the dielectric strength.

Aufgabe der Erfindung. ist es, eine Kontaktanordnung'der eingangs erwähnten Art so auszubilden, daß die Spannungsfestigkeit zwischen den einzelnen Kontaktelementen in einfacherer Weise erzielbar ist. Dabei sollen die Teile der Kontaktanordnung möglichst einfach herstellbar sein ; es soll auch möglich sein, die Zahl der Einzelteile gering zu halten.Object of the invention. is to design a contact arrangement of the type mentioned at the outset in such a way that the dielectric strength between the individual contact elements can be achieved in a simpler manner. The parts of the contact arrangement should be as simple to manufacture as possible; it should also be possible to keep the number of individual parts low.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die mit dem Träger der beweglichen Kontaktelemente verbundenen Andruckfedern aus elastischem Kunststoff bestehen.According to the invention, this object is achieved in that the pressure springs connected to the carrier of the movable contact elements consist of elastic plastic.

Durch die erfindungsgemäße Formung der Andruckfedern aus Kunststoff ergibt sich eine Vereinfachung der Fertigung, da die Federn elektrisch nicht leitend sind und somit ohne Rücksicht auf Abstände zu leitenden Teilen gestaltet werden können. Diese Andruckfedern können beispielsweise als Blattfedern eine wesentlich einfachere Ausgestaltung erhalten als die üblicherweise verwendeten Achraubenfedern.-Auch besondere isolierende Abschirmungen am Träger sind für die Andruckfedern nicht erforderlich. Die Kunststoffedern können in einem Arbeitsgang, beispielsweise im Spritzgußverfahren, hergestellt werden, was wiederum eine Vereinfachung der Fertigung gegenüber der Herstellung von Metallfedern bedeutet. Damit ergeben sich bereits Vorteile, selbst wenn man die einzelnen Federn als getrennte Teile fertigt und durch Steckbefestigung oder auf andere Weise, wie etwa Ultraschallverschweißen oder dergleichen, auf dem Träger befestigt.The shaping of the pressure springs made of plastic according to the invention simplifies production, since the springs are not electrically conductive and can therefore be designed without regard to the distances to conductive parts. These pressure springs can, for example, have a much simpler design as leaf springs than the commonly used axle springs. Also special insulating shields on the support are not required for the pressure springs. The plastic springs can be produced in one operation, for example by injection molding, which in turn simplifies production compared to the production of metal springs. This already has advantages, even if the individual springs are manufactured as separate parts and fastened to the carrier by plug-in fastening or in some other way, such as, for example, ultrasonic welding or the like.

Eine noch weitergehende Vereinfachung der Fertigung ergibt sich jedoch dann, wenn die Andruckfedern in einem Stück mit dem Träger der Kontaktelemente gefertigt werden. Dieser Vorteil wirkt sich umso mehr aus, je mehr bewegliche Kontaktelemente und damit Andruckfedern auf einem gemeinsamen Träger vorgesehen sind.A further simplification of the production results, however, when the pressure springs are manufactured in one piece with the carrier of the contact elements. This advantage has an even greater effect the more movable contact elements and thus pressure springs are provided on a common carrier.

In einer vorteilhaften weiteren Ausgestaltung der Erfindung ist vorgesehen, daß jeweils zwei symmetrisch am Träger befestigte Andruckfedern mit ihren freien Enden auf ein als Kontaktbrücke auf dem Träger verschiebbar gelagertes bewegliches Kontaktelement einwirken. Der Träger kann dabei einen Mittelsteg aufweisen, wobei die beweglichen Kontaktelemente in Durchbrüchen dieses Mittelsteges geführt sind. Zweckmäßigerweise sind in diesem Fall die Andruckfedern jeweils seitlich am Mittelsteg befestigt. In einer Weiterbildung können am Träger jeweils parallel zu den Kontaktelementen Querstege vorgesehen sein, an deren äußeren Enden die Andruckfedern als auf die Kontaktelemente zu verlaufende Blattfedern angeformt sind. Eine besonders günstige Ausführungsform sieht weiterhin vor, daß die als Blattfedern ausgebildeten Andruckfedern jeweils zwischen ihrem Befestigungsende und ihrem freien Ende einen spitzen Winkel bilden. Auf diese Weise läßt sich auf engem Raum eine besonders große Federlänge und damit eine weiche Federcharakteristik erzielen.In an advantageous further embodiment of the invention it is provided that in each case two pressure springs attached symmetrically to the support act with their free ends on a movable contact element which is displaceably mounted on the support as a contact bridge. The carrier can have a central web, the movable contact elements being guided in openings in this central web. In this case, the pressure springs are expediently fastened to the side of the central web. In a further development, crossbars can be provided on the carrier parallel to the contact elements, at the outer ends of which the pressure springs are molded as leaf springs to be run on the contact elements. A particularly favorable embodiment also provides that the pressure springs designed as leaf springs each form an acute angle between their fastening end and their free end. In this way, a particularly long spring length and thus a soft spring characteristic can be achieved in a narrow space.

Weiterhin ist es vorteilhaft, wenn der Querschnitt der Andruckfedern zwischen Befestigungsstelle und freiem Ende jeweils entsprechend dem Verlauf der Biegebeanspruchung ungleichmäßig gestaltet ist. So läßt sich durch zunehmende Federdicke oder Federbreite von der Betätigungsstelle, d. h. dem freien Ende, bis zu der Stelle, wo das maximale Biegemoment auftritt, eine annähernd gleiche Biegespannung über die ganze Federlänge erzielen.Furthermore, it is advantageous if the cross section of the pressure springs between the fastening point and the free end is designed to be uneven in accordance with the course of the bending stress. So can by increasing spring thickness or spring width from the actuation point, d. H. from the free end to the point where the maximum bending moment occurs, achieve approximately the same bending stress over the entire length of the spring.

Zweckmäßig ist weiterhin, daß am Träger eine den Andruckfedern gleichgestaltete Rückstellfeder ebenfalls aus Kunststoff vorgesehen, gegebenenfalls mitangeformt, ist. Damit werden die durch Verwendung von Kunststoffedern erzielten Vorteile nicht nur für die Andruckfedern der Kontaktelemente, sondern auch für eine üblicherweise zusätzlich erforderliche Rückstellfeder des Kontaktträgers zur Wirkung gebracht.It is furthermore expedient that a return spring which is of the same design as the pressure springs is also provided on the carrier, possibly made of plastic, if necessary. The advantages achieved by using plastic springs are thus brought into effect not only for the pressure springs of the contact elements, but also for a return spring of the contact carrier which is usually additionally required.

Zweckmäßigerweise wird für die Andruckfedern bzw. die Rückstellfeder ein zähelastischer Kunststoff verwendet, der eine möglichst kleine Relaxation besitzt. Auf diese Weise kann eine den Metallfedern vergleichbare Lebensdauer gewährleistet werden. Als besonders zweckmäßig erweist sich dabei Polyamid mit Füllstoffen, wobei als Füllstoff Polyimid (Handelsname Aramidfaser), Glasfasern oder auch Kohlenstoffe in Betracht kommen.Expediently, a tough elastic plastic is used for the pressure springs or the return spring, which is as small as possible Owns relaxation. In this way, a lifespan comparable to that of the metal springs can be guaranteed. Polyamide with fillers has proven to be particularly expedient, polyimide (trade name aramid fiber), glass fibers or even carbons being suitable as the filler.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert. Es zeigt

  • Figur 1 einen Träger mit Kontaktbrücken und Kunststoffedern für einen Brückenkontaktsatz,
  • Figur 2 einen Brückenkontaktsatz unter Verwendung des Kontaktträgers von Fig. 1,
  • Figur 3 bis 5 Einzelteile des Kontaktbrückenträgers von Fig. 1,
  • Figur 6 eine weitere Ausführungsform des Kontaktträgers mit abgewandelten Federn.
Exemplary embodiments of the invention are explained in more detail below with reference to the drawing. It shows
  • FIG. 1 shows a carrier with contact bridges and plastic springs for a bridge contact set,
  • FIG. 2 shows a bridge contact set using the contact carrier from FIG. 1,
  • 3 to 5 individual parts of the contact bridge carrier of FIG. 1,
  • Figure 6 shows another embodiment of the contact carrier with modified springs.

Die Fig. 1 zeigt einen Kontaktbrückenträger 1, der in einem Brückenkontaktsatz gemäß Fig. 2 als Schieber einsetzbar ist. Bei diesem Brückenkontaktsatz sind in einem Gehäuse 2 feststehende Kontaktelemente 3 verankert, welche mit den Kontaktbrücken 4 des Trägers 1 zusammenwirken. Je nach Anordnung der Kontaktbrücken 4 und der feststehenden Kontakte 3 ergibt sich dabei ein Schließer- oder Öffnerkontakt. Die Kontaktbrücken 4 sind dabei in Ausnehmungen 5a eines Mittelsteges 5 gelagert. Sie werden jeweils durch Andruckfedern 6 gegen einen Anschlag 5b vorgespannt. Je nach Betätigung des Trägers bzw. Schiebers 1 werden diese Kontaktbrücken 4 mit den Kontaktelementen 3 in Verbindung gebracht, wobei der Kontaktdruck durch die Andruckfedern 6 bestimmt wird.FIG. 1 shows a contact bridge carrier 1 which can be used as a slide in a bridge contact set according to FIG. 2. In this bridge contact set, fixed contact elements 3 are anchored in a housing 2 and cooperate with the contact bridges 4 of the carrier 1. Depending on the arrangement of the contact bridges 4 and the fixed contacts 3, a make or break contact results. The contact bridges 4 are mounted in recesses 5a of a central web 5. They are each biased against a stop 5b by pressure springs 6. Depending on the actuation of the carrier or slide 1, these contact bridges 4 are brought into connection with the contact elements 3, the contact pressure being determined by the pressure springs 6.

Die Andruckfedern 6 sind am Mittelsteg 5 des Trägers 1 jeweils angeformt, und zwar jeweils paarweise spiegelbildlich zu beiden Seiten des Mittelsteges. Damit wird ein symmetrischer Andruck der ebenfalls symmetrisch angeordneten Kontaktbrücken 4 gewährleistet. Die einzelnen Andruckfedern sind als Blattfedern ausgebildet, welche ausgehend von ihrem Ursprung 6a am Mittelsteg bis zu ihren freien, an den Kontaktbrücken anliegenden Enden 6b einen spitzen Winkel bilden. Auf diese Weise wird eine große Federlänge und eine weiche Federcharakteristik erzielt. Am Ende 1a des Trägers 1 sind außerdem zwei symmetrisch angeordnete Rückstellfedern 7 angeformt, welche in ihrer Form den Andruckfedern 6 entsprechen. Sie haben die Aufgabe, den Träger 1 im Grundkörper abzustützen und nach Betätigung zurückzustellen:The pressure springs 6 are molded onto the central web 5 of the carrier 1, in each case in pairs in mirror images on both sides of the central web. This ensures a symmetrical pressure of the contact bridges 4, which are also arranged symmetrically. The individual pressure springs are designed as leaf springs, which form an acute angle from their origin 6a on the central web to their free ends 6b abutting the contact bridges. In this way, a long spring length and a soft spring characteristic is achieved. At the end 1a of the carrier 1, two symmetrically arranged return springs 7 are also formed, which correspond in shape to the pressure springs 6. They have the task of supporting the carrier 1 in the base body and resetting it after actuation:

In einer anderen Ausgestaltung wäre es möglich, die Andruckfedern 6 bzw. die RücksteIlfedern 7 jeweils getrennt aus Kupststoff zu spritzen und auf dem Mittelsteg 5 des Trägers 1 steckbar oder mit einer Schweißverbindung zu befestigen. Die Kontaktbrücken 4 müssen ohnehin auf den Träger aufgesteckt werden. Fertigungsgemäß ist es jedoch zweckmäßig, die einzelnen Federn in einem Stück mit dem Träger 1 oder zumindest mit einem Teil des Trägers 1, nämlich dem Mittelstück 5, zu fertigen. Wenn der Träger wie im vorliegenden Beispiel einen Mittelsteg und über den Kontaktbrücken eine Abdeckplatte 8 aufweist, ist es zweckmäßig, den Träger zweiteilig auszubilden, so daß der eine Teil mit den Federn einfacher gespritzt werden kann. Der andere Teil, im vorliegenden Fall die Abdeckplatte 8, kann dann auf einfache Weise mit dem Mittelsteg 5 verbunden werden.In another embodiment, it would be possible to inject the pressure springs 6 and the rear part springs 7 are each isolated from Ku p ststoff and to be mounted on the central web 5 of the carrier 1 or plugged with a weld joint. The contact bridges 4 must be attached to the carrier anyway. In terms of production, however, it is expedient to manufacture the individual springs in one piece with the support 1 or at least with a part of the support 1, namely the central piece 5. If, as in the present example, the carrier has a central web and a cover plate 8 over the contact bridges, it is expedient to design the carrier in two parts, so that one part can be injected more easily with the springs. The other part, in the present case the cover plate 8, can then be connected to the central web 5 in a simple manner.

Eine solche Ausführungsform zeigen die Fig. 3 bis 5. Dabei besteht der Träger aus dem Mittelsteg 5, der in den Fig. 3 und 4 in zwei Ansichten dargestellt ist, sowie der Abdeckplatte 5 gemäß Fig. 5. Der Mittelsteg 5 mit den angeformten Andruckfedern 6 bzw. Rückstellfedern 7 besitzt Ausnehmungen 5a, in welche die Kontaktbrücken 4 eingeschoben werden. Außerdem sind an den Mittelstegen 5 Befestigungsstege 9 mit hakenförmigen Enden 10 vorgesehen, welche in Ausnehmungen 11 der Abdeckplatte 8 einrastbar befestigt werden können. Durch diese Befestigung an der Platte 8 werden gleichzeitig die Kontaktbrücken 4 gegen Herausfallen gesichert. Zu diesem Zweck sind an der Platte 8 zusätzliche Erhebungen 12 angeformt, welche bei der Verbindung von Mittelsteg 5 mit der Platte 8 über den Kontaktbrücken 4 zu liegen kommen (Fig. 2). Ein Mitnehmer 13 auf der Platte 8 dient in üblicher Weise dazu, den Träger 1 als Schieber durch den Anker eines nicht dargestellten Magnetsystems betätigen zu können.3 to 5. The carrier consists of the central web 5, which is shown in FIGS. 3 and 4 in two views, and the cover plate 5 according to FIG. 5. The central web 5 with the molded-on pressure springs 6 or return springs 7 has recesses 5a into which the contact bridges 4 are inserted. In addition, 5 fastening webs 9 with hook-shaped ends 10 are provided on the central webs, which can be snapped into recesses 11 in the cover plate 8. By this attachment to the plate 8, the contact bridges 4 are secured against falling out. For this purpose, additional elevations 12 are formed on the plate 8, which come to rest on the contact bridges 4 when the central web 5 is connected to the plate 8 (FIG. 2). A driver 13 on the plate 8 is used in the usual way to be able to operate the carrier 1 as a slide by the armature of a magnet system, not shown.

Fig. 6 zeigt eine Abwandlung des Trägers von Fig. 1. Dieser Träger 21 ist im wesentlichen mit Abdeckplatte und Mittelsteg so aufgebaut wie der Träger von Fig. 1. Lediglich die Federn sind etwas anders gestaltet. So besitzt der Träger 21 jeweils beiderseits vom Mittelsteg 22 abgehende Seitenstege 23, an deren außeren Enden 23a die Andruckfedern 24 bzw. die Rückstellfedern 25 angeformt sind. Diese Andruckfedern 24 bzw. Rückstellfedern 25 sind in diesem Fall als einfache, schräg nach innen verlaufende Blattfedern ausgebildet. Sie sind damit in der Form einfacher als die einen spitzen Winkel bildenden Andruckfedern 6 der Fig. 1. Sie können dann zur Anwendung kommen, wenn aufgrund der übrigen Konstruktion auch mit dieser Form eine genügende Federlänge erreicht wird.Fig. 6 shows a modification of the carrier of Fig. 1. This carrier 21 is essentially constructed with a cover plate and central web as the carrier of Fig. 1. Only the springs are designed somewhat differently. Thus, the carrier 21 has on both sides of the central web 22 extending side webs 23, on the outer ends 23a, the pressure springs 24 and the return springs 25 are formed. In this case, these pressure springs 24 or return springs 25 are designed as simple leaf springs running obliquely inwards. They are thus simpler in shape than the pressure springs 6 of FIG. 1 which form an acute angle.

Claims (12)

1. A contact arrangement having co-operating movable contact elements (4) and stationary contact elements (3), wherein the movable contact elements (4) are arranged on a carrier (1) and are respectively prestressed in the direction of the allotted stationary contact elements (3) by means of pressure springs (6, 24), characterised in that the pressure springs (6, 24) which are connected to the carrier (1, 21) for the movable contact elements (4) consist of an elastic synthetic resin.
2. A contact arrangement according to Claim 1, characterised in that the pressure springs (6, 24) are in each case separately made and are plugged into the carrier (1).
3. A contact arrangement according to Claim 1, characterised in that the pressure springs (6, 24), together with the carrier (1, 21), are formed integrally.
4. A contact arrangement according to one of Claims 1 to 3, characterised in that two pressure springs, which are symmetrically secured to the carrier (1), respectively act by means of their free ends on a movable contact element (4) which is displaceably arranged on the carrier as a contact bridge.
5. A contact arrangement according to one of Claims 1 to 4, characterised in that the carrier (1) comprises a central bar (5) having openings (5a), in which the movable contact elements (4) are arranged ; and that each of the pressure springs (6) is laterally secured to the central bar (5).
6. A contact arrangement according to Claim 5, characterised in that the carrier (1) is formed from a central bar (5) and a cover plate (8), which are separately manufactured and are connected to one another by fastening means (9, 10, 11) which can engage in each other.
7. A contact arrangement according to one of Claims 1 to 6, characterised in that cross-pieces (23), at the outer ends (23a) of which the pressure springs (24) are formed, are respectively arranged parallel to the contact elements (4) on the carrier (21).
8. A contact arrangement according to one of Claims 1 to 7, characterised in that the pressure springs (6) in each case form an acute angle between the fastening end and the free end.
9. A contact arrangement according to one of Claims 1 to 8, characterised in that between the fastening point and the free end, the cross-section of the pressure springs is formed so as to be non-uniform in accordance with the course of the bending load.
10. A contact arrangement according to one of Claims 1 to 9, characterised in that one or more return springs (7, 25), similar to the pressure springs, are arranged on the carrier (1).
11. A contact arrangement according to one of Claims 1 to 10, characterised in that the pressure springs (6, 24) and, if necessary, the return springs (7, 25), consist of polyamid with fillers.
12. A contact arrangement according to Claim 11, characterised in that polyimide, glass fibres or carbons are used as fillers.
EP81106491A 1980-08-22 1981-08-20 Contact arrangement Expired EP0046576B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3031725 1980-08-22
DE19803031725 DE3031725A1 (en) 1980-08-22 1980-08-22 CONTACT ARRANGEMENT

Publications (3)

Publication Number Publication Date
EP0046576A2 EP0046576A2 (en) 1982-03-03
EP0046576A3 EP0046576A3 (en) 1982-08-25
EP0046576B1 true EP0046576B1 (en) 1984-06-13

Family

ID=6110208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106491A Expired EP0046576B1 (en) 1980-08-22 1981-08-20 Contact arrangement

Country Status (6)

Country Link
US (1) US4405848A (en)
EP (1) EP0046576B1 (en)
JP (1) JPS5772216A (en)
BR (1) BR8105337A (en)
DE (2) DE3031725A1 (en)
PT (1) PT73543B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265308A (en) * 1990-12-19 1993-11-30 Intek Weatherseal Products, Inc. Jamb liner
US5278369A (en) * 1992-06-30 1994-01-11 Bremas S.P.A. Electrical operating device with contact-holding slider in two parts
EP1577919B1 (en) * 2004-03-15 2014-09-10 Omron Corporation Electromagnetic relay
EP1600989B1 (en) * 2004-05-26 2008-04-09 Siemens Aktiengesellschaft Contact system
EP1600990A1 (en) * 2004-05-26 2005-11-30 Siemens Aktiengesellschaft Contact system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758169A (en) * 1954-03-15 1956-08-07 Gen Motors Corp Electrical switch
FR1244183A (en) * 1959-01-02 1960-10-21 Carr Fastener Co Ltd Elastic support device for rods or bars
GB1052662A (en) * 1963-01-18
FR1446838A (en) * 1964-09-12 1966-07-22 Continental Elektro Ind Ag Contactor
DE1977471U (en) * 1966-10-20 1968-01-25 Stotz Kontakt Gmbh CONTACT BRIDGE SUPPORT FOR ELECTRIC CONTACTORS.
US3403236A (en) * 1967-04-05 1968-09-24 Robertshaw Controls Co Electrical switch having a one-piece actuator and spring arm structure
US3694590A (en) * 1971-01-04 1972-09-26 Jon L Otterlei Slide switch with improved movable contact actuator resilient biasing means
JPS4971475A (en) * 1972-11-11 1974-07-10
JPS561813B2 (en) * 1973-04-20 1981-01-16
US4029924A (en) * 1974-10-10 1977-06-14 Westinghouse Electric Corporation Contact block interlock for electric switch
DE2833497C2 (en) * 1978-07-31 1983-03-10 Brown, Boveri & Cie Ag, 6800 Mannheim Electrical load switch for low-voltage systems

Also Published As

Publication number Publication date
DE3164176D1 (en) 1984-07-19
US4405848A (en) 1983-09-20
PT73543A (en) 1981-09-01
BR8105337A (en) 1982-05-04
EP0046576A2 (en) 1982-03-03
PT73543B (en) 1982-11-05
EP0046576A3 (en) 1982-08-25
DE3031725A1 (en) 1982-04-01
JPS5772216A (en) 1982-05-06

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