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EP0326116A1 - Contact arrangement for a relay - Google Patents

Contact arrangement for a relay Download PDF

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Publication number
EP0326116A1
EP0326116A1 EP89101289A EP89101289A EP0326116A1 EP 0326116 A1 EP0326116 A1 EP 0326116A1 EP 89101289 A EP89101289 A EP 89101289A EP 89101289 A EP89101289 A EP 89101289A EP 0326116 A1 EP0326116 A1 EP 0326116A1
Authority
EP
European Patent Office
Prior art keywords
contact
spring
bend
edge
arrangement according
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.)
Granted
Application number
EP89101289A
Other languages
German (de)
French (fr)
Other versions
EP0326116B1 (en
Inventor
Erwin Dipl.-Ing Müller (FH)
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
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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Publication of EP0326116A1 publication Critical patent/EP0326116A1/en
Application granted granted Critical
Publication of EP0326116B1 publication Critical patent/EP0326116B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/60—Contact arrangements moving contact being rigidly combined with movable part of magnetic circuit
    • 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
    • H01H1/18—Contacts characterised by the manner in which co-operating contacts engage by abutting with subsequent sliding
    • 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
    • H01H1/20—Bridging contacts
    • H01H1/2083—Bridging contact surfaces directed at an oblique angle with respect to the movement of the bridge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H2047/003—Detecting welded contacts and applying weld break pulses to coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/001—Means for preventing or breaking contact-welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/28—Parts movable due to bending of a blade spring or reed

Definitions

  • the invention relates to a contact arrangement for a relay with a contact spring, the spring leg of which is fastened at one end and is biased with its free end against a counter-contact element by at least one pretensioning bend extending transversely to its longitudinal direction, the free end in the closed state of contact with a contact piece rests on the mating contact element and is lifted from the mating contact element in the opened state of the contact by an actuating member engaging between the pretensioning bend and the free end.
  • the object of the invention is to develop a contact arrangement of the type mentioned in such a way that the tendency to bounce, which is one of the causes of the welding, is reduced when the contacts are closed and that the opening of welded contacts is facilitated when opening.
  • this object is achieved in that at least one pretensioning bend of the contact spring extends at an acute angle to the contact edge of the actuating member for the spring leg.
  • the biasing bend running obliquely to the contact edge or the actuating edge ensures that the spring receives a torsional movement both when the contact is closed and when it is opened, as a result of which a lateral rolling off at the contact point is forced. As a result, the impact energy is partially converted into friction when closing, which leads to a reduction in the tendency to bounce. Due to the oblique pretensioning kink, the actuating member also asymmetrically engages the contact spring when the contact is opened, as a result of which an additional torsional force acts on a welded contact point and facilitates tearing open.
  • the contact spring is supported in an area between the oblique prestressing bend and the contact point on an edge of the armature.
  • an inclined pretensioning kink also in another relay structure, the edge of an actuating or supporting member taking the place of the anchor edge.
  • two or more can be provided instead of the one pre-tensioning buckle. These can then run parallel to one another or also at an angle to one another. Since there must be a moment for a torsion of the spring, it is possible in the case of springs with two pretensioning bends to provide one bend parallel to the contact edge and a second bend obliquely to this; however, both kinks can also be attached in the same direction at an angle or in opposite directions at an angle to one another.
  • the angle between the pretension bend and the contact edge should be between 0 and 30 °. Good results have been obtained at an angle of the order of 5 °.
  • the distance of the kink or kinks to the clamping point depends on the geometry of the spring and the desired angle of impact on the counter contact.
  • the size of the wobble of the contact, which results from the deflection and the torsion of the spring, is also important. Therefore, a relatively large overstroke should be provided when closing the contacts.
  • the biasing force with which the spring is biased against the actuator should be about 20 to 30% of the contact force. If it is a counter-contact spring biased against a support plate, this proportion will generally be higher.
  • a contact spring 5 is connected to the armature and carries a contact piece 6 at its free end 5a and cooperates with a mating contact element 7 anchored in the coil former 1 or its contact piece 8.
  • the contact spring 5 is biased in the area between its attachment point 9 on the armature 4 and the free end 5a towards the armature and thus towards the mating contact element 7.
  • This pretension is generated by an obliquely running pretension kink 10, which generates a certain contact force F on the anchor edge 4a.
  • the angle between the contact edge 4a and the pretension bend 10 can be between 0 and 30 °. It is preferably in the range from approximately 5 ° to 10 °.
  • the preload bend 10 causes the contact piece 6 to roll on the contact piece 8 when the contact is closed and when it opens, which leads to a reduction in the bouncing and easier tearing of the contact with a slight welding.
  • FIG. 3 and 4 show a further embodiment of a contact arrangement designed according to the invention, the relay system no longer being shown.
  • an armature 14 (which is only partially shown) is coupled to a movable contact spring 15, that is to say it is directly connected or is also actuated via an intermediate member, the contact piece 16 of which cooperates with a contact piece 18 of a counter-contact spring 17.
  • the moving contact spring 15 can be more or less rigidly connected to the armature, since it does not require high elasticity. Because in this case, the mating contact spring is also 17th elastic, so it can absorb the overstroke of the armature when the contact closes.
  • the counter-contact spring 17 is biased by a bias bias 20 against a support plate 19, wherein it rests on the edge 19a of this support plate in the idle state.
  • the effect of the oblique preload bend is the same as in the example previously described. In this case, however, the preload is higher and almost the same as the contact force. Otherwise, all configuration options of the previous example also apply to the example according to FIGS. 3 and 4.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Springs (AREA)
  • Breakers (AREA)
  • Relay Circuits (AREA)

Abstract

Die Kontaktanordnung besitzt eine Kontaktfeder (5), welche durch einen Vorspannknick (10) gegen eine Auflagekante (4a) eines Betätigungsorgans (4) vorgespannt ist. Der Vorspann­knick (10) verläuft schräg unter einem Winkel von 0 bis 30° zur Auflagekante (4a), wodurch ein Abrollen an der Kontakt­stelle erzeugt wird. Die Kontaktanordnung ist besonders vorteilhaft für das Schalten hoher Lastströme, da durch das Abrollen an der Kontaktstelle die Schweißneigung vermindert und bei gerin­ger Verschweißung ein leichteres Aufreißen des Kontaktes beim Öffnen erreicht wird.

Figure imgaf001
The contact arrangement has a contact spring (5) which is pretensioned against a contact edge (4a) of an actuating member (4) by a pretension bend (10). The pretension bend (10) runs obliquely at an angle of 0 to 30 ° to the contact edge (4a), which causes the contact point to roll off. The contact arrangement is particularly advantageous for switching high load currents, since the tendency to sweat is reduced by the rolling off at the contact point and, with little welding, the contact is easier to open when opened.
Figure imgaf001

Description

Die Erfindung betrifft eine Kontaktanordnung für ein Relais mit einer Kontaktfeder, deren Federschenkel mit einem Ende befestigt ist und mit seinem freien Ende gegen ein Gegen­kontaktelement durch mindestens einen quer zu seiner Längs­richtung verlaufenden Vorspannknick vorgespannt ist, wobei das freie Ende im Schließzustand des Kontaktes mit einem Kontaktstück auf dem Gegenkontaktelement aufliegt und im Öffnungszustand des Kontaktes durch ein zwischen Vorspann­knick und freiem Ende angreifendes Betätigungsorgan von dem Gegenkontaktelement abgehoben ist.The invention relates to a contact arrangement for a relay with a contact spring, the spring leg of which is fastened at one end and is biased with its free end against a counter-contact element by at least one pretensioning bend extending transversely to its longitudinal direction, the free end in the closed state of contact with a contact piece rests on the mating contact element and is lifted from the mating contact element in the opened state of the contact by an actuating member engaging between the pretensioning bend and the free end.

Relais mit derartigen Kontaktanordnungen gibt es in großer Zahl. Beispielsweise ist ein derartiges Relais in dem DE-GM 82 35 283 gezeigt. Derartige Relais mit einfachem Aufbau, wobei häufig die Kontaktfeder unmittelbar mit dem Anker verbunden ist, der Anker also selbst das Betätigungselement darstellt, werden vielfach zum Schalten hoher (Gleich­strom-) Lasten eingesetzt. Ein Anwendungsfall ist bei­spielsweise das Schalten von Lampenstromkreisen in Kraft­fahrzeugen, wobei hohe Stromspitzen bis zu 180 A auftreten können. Bei derartig hohen Schaltlasten mit Lichtbogenbil­dung, insbesondere bei prellendem Einschalten, kommt es häufig zum Verschweißen der Kontakte und damit zum Ausfall des Relais. Um jedoch einen frühzeitigen Ausfall des Relais zu verhindern, ist es erforderlich, hohe Aufreißkräfte zu erreichen, so daß geringfügig verschweißte Kontakte wieder geöffnet werden können und das Relais funktionsfähig bleibt. Hierzu ist es bekannt, hohe Federkräfte für die Rückstellung der Kontaktfeder bereitzustellen, was natür­lich eine entsprechende Erhöhung der Anzugskräfte und der Ansprecherregung mit sich bringt. Von Vorteil ist es auch, beim Schließen des Kontaktes einen großen Überhub des An­ kers vorzusehen. Wegen der bereits erwähnten erhöhten Erre­gerleistung kann jedoch die Vorspannung bzw. die erhöhte Rückstellkraft nicht beliebig hoch gewählt werden.Relays with such contact arrangements exist in large numbers. For example, such a relay is shown in DE-GM 82 35 283. Relays of this type with a simple construction, the contact spring frequently being directly connected to the armature, that is to say the armature itself being the actuating element, are often used for switching high (direct current) loads. One application is, for example, the switching of lamp circuits in motor vehicles, where high current peaks of up to 180 A can occur. With such high switching loads with arcing, especially when bouncing on, the contacts are often welded and the relay fails. However, in order to prevent the relay from failing prematurely, it is necessary to achieve high tear-open forces so that slightly welded contacts can be opened again and the relay remains functional. For this purpose, it is known to provide high spring forces for the resetting of the contact spring, which of course entails a corresponding increase in the attraction forces and the response excitation. It is also advantageous if the contact closes a large overstroke kers to provide. Because of the already mentioned increased excitation power, however, the preload or the increased restoring force cannot be chosen to be arbitrarily high.

Aufgabe der Erfindung ist es, eine Kontaktanordnung der eingangs genannten Art so weiterzubilden, daß die Prellnei­gung, die mit eine Ursache für das Verschweißen ist, beim Schließen der Kontakte vermindert wird und daß beim Öffnen das Aufreißen verschweißter Kontakte erleichtert wird.The object of the invention is to develop a contact arrangement of the type mentioned in such a way that the tendency to bounce, which is one of the causes of the welding, is reduced when the contacts are closed and that the opening of welded contacts is facilitated when opening.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß min­destens ein Vorspannknick der Kontaktfeder unter einem spitzen Winkel zur Auflagekante des Betätigungsorgans für den Federschenkel verläuft.According to the invention, this object is achieved in that at least one pretensioning bend of the contact spring extends at an acute angle to the contact edge of the actuating member for the spring leg.

Durch den schräg zur Auflagekante oder Betätigungskante verlaufenden Vorspannknick wird erreicht, daß sowohl beim Schließen als auch beim Öffnen des Kontaktes die Feder eine Torsionsbewegung erhält, wodurch ein seitliches Abrollen an der Kontaktstelle erzwungen wird. Dadurch wird die Auf­schlagenergie beim Schließen zum Teil in Reibung umgesetzt, was zu einer Verringerung der Prellneigung führt. Aufgrund des schrägen Vorspannknicks greift außerdem das Betäti­gungsorgan auch beim Öffnen des Kontaktes unsymmetrisch an der Kontaktfeder an, wodurch auch an einer verschweißten Kontaktstelle eine zusätzliche Torsionskraft wirkt und das Aufreißen erleichtert.The biasing bend running obliquely to the contact edge or the actuating edge ensures that the spring receives a torsional movement both when the contact is closed and when it is opened, as a result of which a lateral rolling off at the contact point is forced. As a result, the impact energy is partially converted into friction when closing, which leads to a reduction in the tendency to bounce. Due to the oblique pretensioning kink, the actuating member also asymmetrically engages the contact spring when the contact is opened, as a result of which an additional torsional force acts on a welded contact point and facilitates tearing open.

Wenn das Betätigungsorgan unmittelbar ein Anker ist, auf welchem die Kontaktfeder aufliegt, stützt sich die Kontakt­feder in einem Bereich zwischen dem schräg verlaufenden Vorspanknick und der Kontaktstelle an einer Kante des An­kers ab. Es wäre aber auch denkbar, einen derart schräg verlaufenden Vorspannknick auch bei einem anderen Relais­aufbau anzuwenden, wobei an die Stelle der Ankerkante die Kante eines Betätigungs- oder Abstützorgans tritt.If the actuating member is an armature directly, on which the contact spring rests, the contact spring is supported in an area between the oblique prestressing bend and the contact point on an edge of the armature. However, it would also be conceivable to use such an inclined pretensioning kink also in another relay structure, the edge of an actuating or supporting member taking the place of the anchor edge.

Zur Erzielung eines größtmöglichen Überhubes kann man an­stelle des einen Vorspannknicks auch zwei oder mehrere vor­sehen. Diese können dann parallel zueinander oder auch in einem Winkel zueinander verlaufen. Da für eine Torsion der Feder ein Moment vorhanden sein muß, ist es bei Federn mit zwei Vorspannknicken möglich, den einen Knick parallel zur Auflagekante und einen zweiten Knick schräg zu dieser vor­zusehen; es könen aber auch beide Knicke gleichsinnig schräg oder gegensinnig schräg zueinander angebracht wer­den.To achieve the greatest possible overstroke, two or more can be provided instead of the one pre-tensioning buckle. These can then run parallel to one another or also at an angle to one another. Since there must be a moment for a torsion of the spring, it is possible in the case of springs with two pretensioning bends to provide one bend parallel to the contact edge and a second bend obliquely to this; however, both kinks can also be attached in the same direction at an angle or in opposite directions at an angle to one another.

Der Winkel zwischen dem Vorspannknick und der Auflagekan­te sollte insgesamt zwischen 0 und 30° betragen. Gute Er­gebnisse wurden beim einem Winkel in der Größenordnung von 5° erzielt.The angle between the pretension bend and the contact edge should be between 0 and 30 °. Good results have been obtained at an angle of the order of 5 °.

Der Abstand des Knickes oder der Knicke zur Einspannstelle ist von der Geometrie der Feder und dem gewünschten Auf­treffwinkel auf dem Gegenkontakt abhängig. Wichtig ist au­ßerdem die Größe der Taumelbewegung des Kontaktes, die sich aus der Durchbiegung und der Torsion der Feder ergibt. Des­halb ist ein relativ großer Überhub beim Schließen der Kon­takte vorzusehen.The distance of the kink or kinks to the clamping point depends on the geometry of the spring and the desired angle of impact on the counter contact. The size of the wobble of the contact, which results from the deflection and the torsion of the spring, is also important. Therefore, a relatively large overstroke should be provided when closing the contacts.

Die Vorspannkraft, mit der die Feder gegen das Betätigungs­glied, beispielsweise den Anker, vorgespannt ist, sollte etwa 20 bis 30 % der Kontaktkraft betragen. Wenn es sich um eine gegen eine Stützplatte vorgespannte Gegenkontaktfeder handelt, wird dieser Anteil in der Regel höher sein.The biasing force with which the spring is biased against the actuator, for example the armature, should be about 20 to 30% of the contact force. If it is a counter-contact spring biased against a support plate, this proportion will generally be higher.

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

  • FIG 1 ein schematisch dargestelltes Relaissystem mit einer am Anker befestigten und abgestützten Kontaktfeder,
  • FIG 2 eine stirnseitige Ansicht auf den Anker mit der Kon­taktfeder,
  • FIG 3 und 4 eine Kontaktanordnung mit einer einen schräg verlaufenden Knick aufweisenden Gegenkontaktfeder in zwei Ansichten.
The invention is explained in more detail using an exemplary embodiment with reference to the drawing. It shows
  • 1 shows a schematically illustrated relay system with a contact spring fastened and supported on the armature,
  • 2 shows an end view of the armature with the contact spring,
  • 3 and 4 show a contact arrangement with a counter-contact spring with an inclined kink in two views.

In FIG 1 ist schematisch ein Relaissystem mit einem Spulen­körper 1, einer Wicklung 2, einem Joch 3 und einem am Joch gelagerten flachen Anker 4 dargestellt. Mit dem Anker ist eine Kontaktfeder 5 verbunden, die an ihrem freien Ende 5a ein Kontaktstück 6 trägt und mit einem im Spulenkörper 1 verankerten Gegenkontaktelement 7 bzw. dessen Kontaktstück 8 zusammenwirkt. Die Kontaktfeder 5 ist im Bereich zwischen ihrer Befestigungsstelle 9 am Anker 4 und dem freien Ende 5a zum Anker hin und damit zum Gegenkontaktelement 7 hin vorgespannt. Diese Vorspannung wird durch einen schräg ver­laufenden Vorspannknick 10 erzeugt, der an der Ankerkante 4a eine bestimmte Auflagekraft F erzeugt. Der Winkel zwi­schen der Auflagekante 4a und dem Vorspannknick 10 kann zwischen 0 und 30° betragen. Vorzugsweise liegt er im Be­reich von etwa 5° bis 10°.1 shows schematically a relay system with a coil former 1, a winding 2, a yoke 3 and a flat armature 4 mounted on the yoke. A contact spring 5 is connected to the armature and carries a contact piece 6 at its free end 5a and cooperates with a mating contact element 7 anchored in the coil former 1 or its contact piece 8. The contact spring 5 is biased in the area between its attachment point 9 on the armature 4 and the free end 5a towards the armature and thus towards the mating contact element 7. This pretension is generated by an obliquely running pretension kink 10, which generates a certain contact force F on the anchor edge 4a. The angle between the contact edge 4a and the pretension bend 10 can be between 0 and 30 °. It is preferably in the range from approximately 5 ° to 10 °.

Durch den Vorspannknick 10 wird beim Schließen und beim Öffnen des Kontaktes ein Abrollen des Kontaktstücks 6 auf dem Kontaktstück 8 erreicht, was zu einer Verminderung des Prellens und zu einem leichteren Aufreißen des Kontakts bei einer leichten Verschweißung führt.The preload bend 10 causes the contact piece 6 to roll on the contact piece 8 when the contact is closed and when it opens, which leads to a reduction in the bouncing and easier tearing of the contact with a slight welding.

In den FIG 3 und 4 ist eine weitere Ausführungsform einer erfindungsgemäß gestalteten Kontaktanordnung gezeigt, wobei das Relaissystem nicht mehr dargestellt ist. Bei dieser Ausführungsform ist ein Anker 14 (der nur teilweise darge­stellt ist) mit einer bewegbaren Kontaktfeder 15 gekoppelt, d. h. unmittelbar verbunden oder auch über ein Zwischenor­gan betätigt, dessen Kontaktstück 16 mit einem Kontaktstück 18 einer Gegenkontaktfeder 17 zusammenwirkt. Die bewegt Kontaktfeder 15 kann dabei mehr oder weniger starr mit dem Anker verbunden sein, da sie keine hohe Elastizität benö­tigt. Denn in diesem Fall ist auch die Gegenkontaktfeder 17 elastisch, sie kann also beim Schließen des Kontaktes den Überhub des Ankers aufnehmen. Die Gegenkontaktfeder 17 ist dabei durch einen schräg verlaufenden Vorspannknick 20 ge­gen eine Abstützplatte 19 vorgespannt, wobei sie im Ruhezu­stand an der Kante 19a dieser Abstützplatte aufliegt. Die Wirkung des schrägen Vorspannknicks ist die gleiche wie bei dem vorher beschriebenen Beispiel. Die Vorspannkraft ist allerdings in diesem Fall höher und liegt nahezu in der Hö­he der Kontaktkraft. Ansonsten gelten alle Ausgestaltungs­möglichkeiten des vorherigen Beispiels auch für das Bei­spiel gemäß FIG 3 und 4.3 and 4 show a further embodiment of a contact arrangement designed according to the invention, the relay system no longer being shown. In this embodiment, an armature 14 (which is only partially shown) is coupled to a movable contact spring 15, that is to say it is directly connected or is also actuated via an intermediate member, the contact piece 16 of which cooperates with a contact piece 18 of a counter-contact spring 17. The moving contact spring 15 can be more or less rigidly connected to the armature, since it does not require high elasticity. Because in this case, the mating contact spring is also 17th elastic, so it can absorb the overstroke of the armature when the contact closes. The counter-contact spring 17 is biased by a bias bias 20 against a support plate 19, wherein it rests on the edge 19a of this support plate in the idle state. The effect of the oblique preload bend is the same as in the example previously described. In this case, however, the preload is higher and almost the same as the contact force. Otherwise, all configuration options of the previous example also apply to the example according to FIGS. 3 and 4.

Claims (6)

1. Kontaktanordnung für ein Relais mit einer Kontaktfeder (5; 17), deren Federschenkel (5b) mit einem Ende (5a) befe­stigt ist und mit seinem freien Ende (5a) gegen ein Gegen­kontaktelement (7; 15) durch mindestens einen quer zu sei­ner Längsrichtung verlaufenden Vorspannknick (10; 20) vor­gespannt ist, wobei das freie Ende (5a) im Schließzustand des Kontaktes mit einem Kontaktstück (6; 18) auf dem Gegen­kontaktelement (7, 8; 15, 16) aufliegt und im Öffnungszu­stand des Kontaktes durch ein zwischen Vorspannknick (10; 20) und freiem Ende (5a) angreifendes Betätigungs- oder Ab­stützorgan (4; 19) von dem Gegenkontaktelement (7) abgeho­be ist, dadurch gekennzeichnet, daß mindestens ein Vorspannknick (10; 20) der Kontaktfeder unter einem spitzen Winkel ( ) zur Auflagekante (4a) des Betätigungs- oder Abstützorgans (4; 19) für den Federschen­kel verläuft.1. Contact arrangement for a relay with a contact spring (5; 17), the spring leg (5b) is fixed at one end (5a) and with its free end (5a) against a mating contact element (7; 15) by at least one transverse to it Longitudinal bias bend (10; 20) is biased, the free end (5a) in the closed state of the contact with a contact piece (6; 18) rests on the counter-contact element (7, 8; 15, 16) and in the open state of the contact by between the biasing bend (10; 20) and the free end (5a) engaging actuating or supporting member (4; 19) is lifted off the counter-contact element (7), characterized in that at least one biasing bend (10; 20) of the contact spring at an acute angle () runs to the contact edge (4a) of the actuating or supporting member (4; 19) for the spring leg. 2. Kontaktanordnung nach Anspruch 1, dadurch ge­kennzeichnet, daß das Betätigungs- oder Ab­stützorgan (4) zwischen dem Vorspannknick (10) und dem Kon­taktstück (6) an dem Federschenkel (5b) angreift.2. Contact arrangement according to claim 1, characterized in that the actuating or supporting member (4) between the pretension bend (10) and the contact piece (6) engages on the spring leg (5b). 3. Kontaktanordnung nach Anspruch 2, dadurch ge­kennzeichnet, daß das Betätigungsorgan ein Anker ist, auf den die Kontaktfeder (5) mit ihrem einge­spannten Ende (5c) befestigt ist und an dessen Endkante (4a) sich der Federschenkel im Öffnungszustand des Kontakts abstützt.3. Contact arrangement according to claim 2, characterized in that the actuating member is an armature on which the contact spring (5) is fastened with its clamped end (5c) and on the end edge (4a) of which the spring leg is supported in the open state of the contact. 4. Kontaktanordnung nach einem der Ansprüche 1 bis 3, da­durch gekennzeichnet, daß der Vor­spannknick (10) unter einem Winkel von 0 bis 30° zur Auf­lagekante (4a) des Betätigungsorgans verläuft.4. Contact arrangement according to one of claims 1 to 3, characterized in that the biasing bend (10) extends at an angle of 0 to 30 ° to the contact edge (4a) of the actuating member. 5. Kontaktanordnung nach Anspruch 4, dadurch ge­kennzeichnet, daß der Vorspannknick unter ei­nem Winkel von annähernd 5° zur Auflagekante (4a) verläuft. 6. Kontaktanordnung nach einem der Ansprüche 1 bis 5, da­durch gekennzeichnet, daß mehrere Vorspannknicke vorgesehen sind, die gleichsinnig schräg oder entgegengesetzt schräg zur Auflagekante verlaufen.5. Contact arrangement according to claim 4, characterized in that the biasing bend extends at an angle of approximately 5 ° to the contact edge (4a). 6. Contact arrangement according to one of claims 1 to 5, characterized in that a plurality of bias bends are provided which extend obliquely in the same direction or opposite obliquely to the contact edge. 7. Kontaktanordnung nach einem der Ansprüche 1 bis 6, da­durch gekennzeichnet, daß die Kon­taktfeder (17) eine Gegenkontaktfeder ist, die im Öffnungs­zustand gegen eine Abstützplatte (19) vorgespannt ist.7. Contact arrangement according to one of claims 1 to 6, characterized in that the contact spring (17) is a counter-contact spring which is biased in the open state against a support plate (19).
EP89101289A 1988-01-29 1989-01-25 Contact arrangement for a relay Expired - Lifetime EP0326116B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3802686 1988-01-29
DE3802686 1988-01-29

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EP0326116A1 true EP0326116A1 (en) 1989-08-02
EP0326116B1 EP0326116B1 (en) 1993-04-14

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US (1) US4937544A (en)
EP (1) EP0326116B1 (en)
JP (1) JP2663983B2 (en)
DE (1) DE58904030D1 (en)
ES (1) ES2041846T3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0476182A3 (en) * 1990-09-18 1992-09-02 Siemens Aktiengesellschaft Electromagnetic power relais with a sliding actuator
EP0570852A1 (en) * 1992-05-20 1993-11-24 O.M.P. OFFICINE MECCANOPLASTICHE DI PRECISIONE S.p.A. Improved intermediate support relay for use particularly in motor vehicles
EP1713104A3 (en) * 2005-04-12 2007-11-07 Nec Tokin Corporation Electromagnetic relay
CN111710564A (en) * 2020-06-19 2020-09-25 哈尔滨工业大学 A small sealed electromagnetic relay reed with bent metal combined with tin filling
WO2024056418A1 (en) * 2022-09-12 2024-03-21 Phoenix Contact Gmbh & Co. Kg Method for actuating an electromechanical switching element

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CA2018344C (en) * 1989-12-07 1995-12-12 Yoichi Yokoyama Fusion bonding-resistant contacts in electromagnetic relays
US5155458A (en) * 1991-11-04 1992-10-13 Gamble John G Normally closed AC relay
US5260677A (en) * 1991-11-04 1993-11-09 Gamble John G Snap-acting normally closed AC relay
US5363669A (en) * 1992-11-18 1994-11-15 Whirlpool Corporation Defrost cycle controller
DE19544624C1 (en) * 1995-11-30 1997-01-02 Hella Kg Hueck & Co Electromagnetic hinged armature relay for motor vehicles
US5872497A (en) * 1996-10-23 1999-02-16 Physio-Control Corporation High energy transfer relay
JP5448693B2 (en) * 2009-10-05 2014-03-19 富士通コンポーネント株式会社 Electromagnetic relay
CN109817492A (en) * 2019-02-15 2019-05-28 厦门城市职业学院（厦门市广播电视大学） A relay that reduces contact bounce

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0476182A3 (en) * 1990-09-18 1992-09-02 Siemens Aktiengesellschaft Electromagnetic power relais with a sliding actuator
EP0570852A1 (en) * 1992-05-20 1993-11-24 O.M.P. OFFICINE MECCANOPLASTICHE DI PRECISIONE S.p.A. Improved intermediate support relay for use particularly in motor vehicles
US5329265A (en) * 1992-05-20 1994-07-12 Bitron "A" S.P.A. Intermediate support relay for use particularly in motor vehicles
EP1713104A3 (en) * 2005-04-12 2007-11-07 Nec Tokin Corporation Electromagnetic relay
US7423504B2 (en) 2005-04-12 2008-09-09 Nec Tokin Corporation Electromagnetic relay
CN111710564A (en) * 2020-06-19 2020-09-25 哈尔滨工业大学 A small sealed electromagnetic relay reed with bent metal combined with tin filling
CN111710564B (en) * 2020-06-19 2022-05-03 哈尔滨工业大学 A small sealed electromagnetic relay reed with bent metal combined with tin filling
WO2024056418A1 (en) * 2022-09-12 2024-03-21 Phoenix Contact Gmbh & Co. Kg Method for actuating an electromechanical switching element
BE1030869B1 (en) * 2022-09-12 2024-04-09 Phoenix Contact Gmbh & Co Method for controlling an electromechanical switching element
CN119836672A (en) * 2022-09-12 2025-04-15 菲尼克斯电气公司 Method for actuating an electromechanical switching element

Also Published As

Publication number Publication date
DE58904030D1 (en) 1993-05-19
EP0326116B1 (en) 1993-04-14
JPH01225028A (en) 1989-09-07
ES2041846T3 (en) 1993-12-01
US4937544A (en) 1990-06-26
JP2663983B2 (en) 1997-10-15

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