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EP1085549B1 - Bistable contactor - Google Patents

Bistable contactor Download PDF

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Publication number
EP1085549B1
EP1085549B1 EP00120024A EP00120024A EP1085549B1 EP 1085549 B1 EP1085549 B1 EP 1085549B1 EP 00120024 A EP00120024 A EP 00120024A EP 00120024 A EP00120024 A EP 00120024A EP 1085549 B1 EP1085549 B1 EP 1085549B1
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EP
European Patent Office
Prior art keywords
armature
coil
permanent magnet
coils
contacts
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 - Lifetime
Application number
EP00120024A
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German (de)
French (fr)
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EP1085549A2 (en
EP1085549A3 (en
Inventor
Robert Kralik
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.)
Schaltbau GmbH
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Schaltbau GmbH
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Filing date
Publication date
Application filed by Schaltbau GmbH filed Critical Schaltbau GmbH
Publication of EP1085549A2 publication Critical patent/EP1085549A2/en
Publication of EP1085549A3 publication Critical patent/EP1085549A3/en
Application granted granted Critical
Publication of EP1085549B1 publication Critical patent/EP1085549B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00Electromagnetic relays
    • H01H51/22Polarised relays
    • H01H51/2209Polarised relays with rectilinearly movable armature

Definitions

  • the present invention relates to a bistable contactor having at least one Coil and a relative to the coil movable armature with contacts that together with the contacts for opening or closing a circuit by means of the coil from a first stable position into a second stable position can be transferred, and a permanent magnet in which the armature is in one of its stable positions is supported against the coil, wherein the permanent magnet is stationary relative to the coil and a spring element that moves the armature to the other stable position from the permanent magnet spaced biased.
  • Such a contactor is known, for example, from DE 1 464 867, which is considered to be the closest prior art.
  • This document describes two coils and an armature movable relative to the coils.
  • the armature is for closing a circuit by means of the coils of a first stable position in a second stable position can be transferred.
  • Another contactor is known for example from DE 197 44 396.
  • the contacts are resiliently mounted on the anchor.
  • To open and close a Circuit is the armature by exciting the coil from a first stable position, in which the contacts spaced from corresponding mating contacts of the relay are transferred to a second stable position in which the contacts on the mating contacts applied to close the circuit.
  • the permanent magnet is attached to the anchor and is therefore movable relative to the spool.
  • the coil is energized for a short time. I'm not excited state is caused by the permanent magnet in the two stable positions each closed a magnetic circuit, so that the armature respectively in one of the two stable positions is maintained.
  • the permanent magnet increases the inertia of the anchor. Especially with shaking loads, it can then lead to contact problems come. The switching speed is also limited by this.
  • the object of the invention is therefore, bistable contactors of the type mentioned in such a way to develop further that higher switching speeds can be achieved and at the same time a secure contact is ensured with closed circuit and the Design of the contactor is compact.
  • the object is achieved in that the coils as concentric mutually arranged cylindrical coils are formed.
  • one of the two bistable Positions of the armature on the permanent magnet preferably abut the Pohlschuh. This makes it possible to realize a particularly stable position of the armature, as in Contrary to conventional bistable contactors no air gap between anchor and Permanent magnet in the respective stable position exists.
  • two coils can be provided, wherein by exciting each of a coil, the armature in one of its two stable positions is convertible. This does not require the coil to move the Anchor between the two stable positions each umkupupolen. Instead, you can in each case a coil can be used for transferring in one of the two positions. As a result, the circuit complexity can be reduced.
  • the permanent magnet within the one Coil or coils is arranged. This also makes the contactor more compact shape.
  • the permanent magnets can be arranged by the inside of the coil or one of the coils Permanent magnets generate a strong magnetic flux.
  • the spring element as a compression spring is trained.
  • the anchor can be reliable and in a simple way bias in one of its two stable positions.
  • the single figure shows the bistable contactor according to the invention in a sectional view.
  • the contactor 1 has a substantially cylindrical housing 2 that made an upper housing part 3 and a lower housing part 4 consists.
  • the upper housing part 3 and the lower housing part 4 are placed on one another like a flange and connected by screws 5.
  • a coil holder 6 At the bottom of the housing base 4 is a coil holder 6, on which two concentric coils 7th and 8 are attached.
  • the two coils 7 and 8 are substantially cylindrical formed, with its axis of symmetry in the axis of symmetry of the housing 2 lies. Between the coil holder 6 and the coils 7 and 8 extends Guide element 9 made of plastic.
  • the guide element 9 has a cylindrical, substantially tubular Guide portion 10 and a radially extending flange portion 11.
  • the guide portion 10 extends through the interior of the two Coils in the axial direction.
  • the flange section is located between Coil holder 6 and the coils 7 and 8, wherein it extends substantially radially.
  • the bobbin holder 6 is provided with threads 12, in which the screws 5 are screwed become.
  • the screws 5 extend through through holes 13 and 14 respectively in the upper housing part 3 and lower housing part 4, so that the Screws 5, the upper housing part 3 and the lower housing part 4 with each other and with connect the bobbin holder 6.
  • a flange 15th provided, which is connected via holding elements 16 with the coil holder 6.
  • a permanent magnet with pole piece 17 which has a Screw 18 and a thread, not shown, is connected to the flange 15.
  • the permanent magnet 17 is arranged centrally in the axial direction of the coils substantially.
  • two through holes 19 and 20 are provided, in which a Contact element 21 with contacts 22 is received axially displaceable.
  • an anchor 23 arranged, which has a pin 23 attached to the anchor 24 and a Support member 25 is connected to a holder 26 of the contact element 21.
  • the Holder 26 engages around the support member 25 whose diameter is greater than the diameter of the pin is, thereby the armature 23 and the contact element 21 to connect together in the axial direction.
  • the armature 23 is in a known manner of magnetizable material, such as. Metal produced.
  • the Through opening 20 is arranged in the lower housing part 4 at an intermediate floor, which is provided with a receptacle 27.
  • the receptacle 27 is concentric with the Symmetry axis of the armature and serves to receive a compression spring 28, which is between the receptacle 27 and a pressure surface 29 of the contact element 21 is supported.
  • a compression spring 28 which is between the receptacle 27 and a pressure surface 29 of the contact element 21 is supported.
  • a counter-contact element 30 provided within the housing 2, on the upper housing part 3, a counter-contact element 30 provided.
  • the mating contact element 30 has mating contacts 31, which can be brought into contact with the contacts 22.
  • a compression spring 32 is biasing the mating contact element 30 in the illustration in the figure downwards, ie towards the contact element.
  • the mating contact element is to slightly movable in the axial direction of the armature.
  • the contactor can via the flange 15, z. B. an electric machine mounted become.
  • This assembly takes place in a known manner and therefore need not be further explained become.
  • the arrangement of armature 23, contact element 21 and contact 22nd can in the figure in the figure in the vertical direction between two stable Positions are moved back and forth. In the first, lowered stable position the armature 23 comes against the pole piece of the permanent magnet 17 in abutment. Of the Anchor 23 is held against the pressure force of the compression spring 28. In the second, raised position shown in the figure in the figure the figure the armature 23 is spaced from the permanent magnet 17. The contact element 21 with the armature 23 is biased by the compression spring 28 in the raised position. This stable position is shown in the figure.
  • the contacts 22 and mating contacts 31 disengaged, so that a not shown Circuit can be opened.
  • the contacts 22 and mating contacts 31 In the first, lowered position are the contacts 22 and mating contacts 31 in engagement, so that the circuit is closed.
  • the contactor could also be designed so that in the lowered Position of the circuit interrupted and closed in the raised position is.
  • the transfer of the armature 23 from the first to the second position and vice versa takes place through the two coils 7 and 8.
  • the coil 7 and for transferring the armature of the second in the first position the coil 8 briefly energized.
  • the armature 23 remains in the first or second stable position, depending on which of the two coils 7 and 8 were previously operated.
  • the armature 23 In the first lowered position, the armature 23 is located on the pole piece of the permanent magnet at. This concern is a strong attraction to the anchor 23rd is applied, so that the armature 23 is securely held in the first stable position.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Description

Die vorliegende Erfindung bezieht sich auf ein bistabiles Schütz mit wenigstens einer Spule und einem gegenüber der Spule beweglichen Anker mit Kontakten, der zusammen mit den Kontakten zum Öffnen oder Schließen eines Stromkreises mittels der Spule von einer ersten stabilen Stellung in eine zweite stabile Stellung überführbar ist, und einem Dauermagneten, bei dem sich der Anker in einer seiner stabilen Stellungen gegenüber der Spule abstützt, wobei der Dauermagnet gegenüber der Spule ortsfest ist und einem Federelement, das den Anker in die andere stabile Stellung vom Dauermagneten beabstandend vorspannt.The present invention relates to a bistable contactor having at least one Coil and a relative to the coil movable armature with contacts that together with the contacts for opening or closing a circuit by means of the coil from a first stable position into a second stable position can be transferred, and a permanent magnet in which the armature is in one of its stable positions is supported against the coil, wherein the permanent magnet is stationary relative to the coil and a spring element that moves the armature to the other stable position from the permanent magnet spaced biased.

Ein derartiges Schütz ist zum Beispiel aus der DE 1 464 867, die als nächstliegender Stand der Technik angesehen wird, bekannt. Diese Druckschrift beschreibt zwei Spulen und einen den Spulen gegenüber beweglichen Anker. Der Anker ist zum Schließen eines Stromkreises mittels der Spulen von einer ersten stabilen Stellung in eine zweite stabile Stellung überführbar. Weiterhin sind Kontakte, ein Dauermagnet, der gegenüber den Spulen ortsfest ist und ein Federelement vorgesehen.Such a contactor is known, for example, from DE 1 464 867, which is considered to be the closest prior art. This document describes two coils and an armature movable relative to the coils. The armature is for closing a circuit by means of the coils of a first stable position in a second stable position can be transferred. Furthermore, contacts, a Permanent magnet, which is stationary relative to the coils and a spring element provided.

Ein weiteres Schütz ist zum Beispiel aus der DE 197 44 396 bekannt. Bei diesem Schütz sind die Kontakte federnd am Anker gelagert. Zum Öffnen und Schließen eines Stromkreises wird der Anker durch Anregen der Spule von einer ersten stabilen Stellung, in der die Kontakte von entsprechenden Gegenkontakten des Relais beabstandet sind, in eine zweite stabile Stellung überführt, in der die Kontakte an den Gegenkontakten anliegen, um den Stromkreis zu schließen. Der Dauermagnet ist am Anker befestigt und ist daher gegenüber der Spule beweglich. Zum Überführen des Ankers zwischen seinen beiden stabilen Stellungen wird die Spule jeweils kurzzeitig angeregt. Im nicht angeregten Zustand wird durch den Dauermagnet in den beiden stabilen Stellungen jeweils ein magnetischer Kreis geschlossen, so dass der Anker jeweils in einer der beiden stabilen Stellungen gehalten wird. Durch den Dauermagneten erhöht sich jedoch die Trägheit des Ankers. Insbesondere bei Schüttelbelastungen kann es dann zu Kontaktproblemen kommen. Auch sind der Schaltgeschwindigkeit dadurch Grenzen gesetzt.Another contactor is known for example from DE 197 44 396. In this Contactor, the contacts are resiliently mounted on the anchor. To open and close a Circuit is the armature by exciting the coil from a first stable position, in which the contacts spaced from corresponding mating contacts of the relay are transferred to a second stable position in which the contacts on the mating contacts applied to close the circuit. The permanent magnet is attached to the anchor and is therefore movable relative to the spool. To transfer the anchor between In both its stable positions, the coil is energized for a short time. I'm not excited state is caused by the permanent magnet in the two stable positions each closed a magnetic circuit, so that the armature respectively in one of the two stable positions is maintained. However, the permanent magnet increases the inertia of the anchor. Especially with shaking loads, it can then lead to contact problems come. The switching speed is also limited by this.

Aufgabe der Erfindung ist es daher, bistabile Schütze der eingangs genannten Art derart weiter zu entwickeln, dass sich höhere Schaltgeschwindigkeiten erzielen lassen und gleichzeitig bei geschlossenem Stromkreis ein sicherer Kontakt gewährleistet ist und die Gestaltung des Schützes kompakter wird.The object of the invention is therefore, bistable contactors of the type mentioned in such a way to develop further that higher switching speeds can be achieved and at the same time a secure contact is ensured with closed circuit and the Design of the contactor is compact.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Spulen als konzentrisch zueinander angeordnete Zylinderspulen ausgebildet sind. The object is achieved in that the coils as concentric mutually arranged cylindrical coils are formed.

Diese Lösung ist einfach und hat den Vorteil, dass der Dauermagnet nicht mehr am Anker angebracht ist. Stattdessen kann der Dauermagnet z. B. an einem Gehäuse gegenüber der Spule ortsfest montiert sein. Dadurch lässt sich der Anker gewichtsreduziert gestalten. Durch einen solchen leichteren Anker lässt sich insbesondere bei Schüttelbelastungen die Kontaktsicherheit steigern. Auch ermöglicht dies einen einfachen Aufbau des Schützes. Es werden geringere Anforderungen an die Führungseigenschaften des Ankers gestellt. Wenn die Spulen als konzentrisch zueinander angeordnete Zylinderspulen ausgebildet sind, lassen sich die beiden Spulen kompakt anordnen.This solution is simple and has the advantage that the permanent magnet is no longer at the anchor is appropriate. Instead, the permanent magnet z. B. on a housing opposite be mounted fixed to the coil. As a result, the anchor can be reduced in weight shape. By such a lighter anchor can be especially at shaking loads increase contact safety. This also allows a simple structure of the contactor. There are less requirements for the leadership properties of Anchor posed. If the coils as concentrically arranged cylindrical coils are formed, the two coils can be arranged compact.

In einer vorteilhaften Weiterbildung der Erfindung kann in der einen der beiden bistabilen Stellungen der Anker am Dauermagneten, vorzugsweise dessen Pohlschuh anliegen. Dadurch lässt sich eine besonders stabile Stellung des Ankers realisieren, da im Gegensatz zu herkömmlichen bistabilen Schützen kein Luftspalt zwischen Anker und Dauermagnet in der jeweiligen stabilen Stellung besteht.In an advantageous embodiment of the invention, in one of the two bistable Positions of the armature on the permanent magnet, preferably abut the Pohlschuh. This makes it possible to realize a particularly stable position of the armature, as in Contrary to conventional bistable contactors no air gap between anchor and Permanent magnet in the respective stable position exists.

Auch kann es sich als vorteilhaft erweisen, wenn in der durch den Dauermagneten erzeugten stabilen Stellung der Stromkreis geschlossen ist. Mit dem Dauermagneten lässt sich dadurch ein versehentliches Öffnen des Stromkreises vermeiden.Also, it may prove advantageous if produced in the permanent magnet stable position of the circuit is closed. With the permanent magnet leaves thereby avoid accidental opening of the circuit.

In einer vorteilhaften Weiterbildung der Erfindung können zwei Spulen vorgesehen sein, wobei durch Anregen jeweils einer Spule der Anker in eine seiner beiden stabilen Stellungen überführbar ist. Dadurch ist es nicht erforderlich, die Spule zum Bewegen des Ankers zwischen den beiden stabilen Stellungen jeweils umzupolen. Stattdessen kann jeweils eine Spule für das Überführen in einer der beiden Stellungen verwendet werden. Dadurch lässt sich der Schaltungsaufwand reduzieren.In an advantageous development of the invention, two coils can be provided, wherein by exciting each of a coil, the armature in one of its two stable positions is convertible. This does not require the coil to move the Anchor between the two stable positions each umkupupolen. Instead, you can in each case a coil can be used for transferring in one of the two positions. As a result, the circuit complexity can be reduced.

Auch kann es sich als günstig erweisen, wenn der Dauermagnet innerhalb der einen Spule oder den Spulen angeordnet ist. Auch dadurch lässt sich das Schütz kompakter gestalten. Zudem lässt sich durch den innerhalb der Spule oder einer der Spulen angeordneten Dauermagneten ein starker magnetischer Fluss erzeugen. Also, it may prove to be beneficial if the permanent magnet within the one Coil or coils is arranged. This also makes the contactor more compact shape. In addition, can be arranged by the inside of the coil or one of the coils Permanent magnets generate a strong magnetic flux.

Auch kann es sich als vorteilhaft erweisen, wenn das Federelement als Druckfeder ausgebildet ist. Durch eine solche Druckfeder lässt sich der Anker zuverlässig und auf einfache Weise in einer seiner beiden stabilen Stellungen vorspannen.It may also prove advantageous if the spring element as a compression spring is trained. By such a compression spring, the anchor can be reliable and in a simple way bias in one of its two stable positions.

Nachfolgend wird die Erfindung anhand eines Ausführungsbeispieles näher erläutert.The invention will be explained in more detail with reference to an embodiment.

Die einzige Figur zeigt das erfindungsgemäße bistabile Schütz in einer Schnittdarstellung.The single figure shows the bistable contactor according to the invention in a sectional view.

Das Schütz 1 verfügt über ein im wesentlichen zylindrisches Gehäuse 2, dass aus einem Gehäuseoberteil 3 und einem Gehäuseunterteil 4 besteht. Das Gehäuseoberteil 3 und das Gehäuseunterteil 4 werden flanschartig aufeinandergesetzt und durch Schrauben 5 miteinander verbunden. Am unteren Ende des Gehäuseunterteils 4 befindet sich ein Spulenhalter 6, an dem zwei zueinander konzentrische Spulen 7 und 8 angebracht sind. Die beiden Spulen 7 und 8 sind im wesentlichen zylinderringförmig ausgebildet, wobei ihre Symmetrieachse in der Symmetrieachse des Gehäuses 2 liegt. Zwischen Spulenhalter 6 und den Spulen 7 und 8 erstreckt sich ein Führungselement 9 aus Kunststoff.The contactor 1 has a substantially cylindrical housing 2 that made an upper housing part 3 and a lower housing part 4 consists. The upper housing part 3 and the lower housing part 4 are placed on one another like a flange and connected by screws 5. At the bottom of the housing base 4 is a coil holder 6, on which two concentric coils 7th and 8 are attached. The two coils 7 and 8 are substantially cylindrical formed, with its axis of symmetry in the axis of symmetry of the housing 2 lies. Between the coil holder 6 and the coils 7 and 8 extends Guide element 9 made of plastic.

Das Führungselement 9 verfügt über einen zylindrischen, im wesentlichen rohrförmigen Führungsabschnitt 10 und einen sich dazu radial erstreckenden Flanschabschnitt 11. Der Führungsabschnitt 10 erstreckt sich dabei durch die innere der beiden Spulen in axialer Richtung hindurch. Der Flanschabschnitt befindet sich zwischen Spulenhalter 6 und den Spulen 7 und 8, wobei er sich im wesentlichen radial erstreckt.The guide element 9 has a cylindrical, substantially tubular Guide portion 10 and a radially extending flange portion 11. The guide portion 10 extends through the interior of the two Coils in the axial direction. The flange section is located between Coil holder 6 and the coils 7 and 8, wherein it extends substantially radially.

Der Spulenhalter 6 ist mit Gewinden 12 versehen, in die die Schrauben 5 eingeschraubt werden. Die Schrauben 5 erstrecken sich dabei durch Durchgangsöffnungen 13 und 14 jeweils in dem Gehäuseoberteil 3 und Gehäuseunterteil 4, so dass die Schrauben 5 das Gehäuseoberteil 3 und das Gehäuseunterteil 4 miteinander und mit den Spulenhalter 6 verbinden. The bobbin holder 6 is provided with threads 12, in which the screws 5 are screwed become. The screws 5 extend through through holes 13 and 14 respectively in the upper housing part 3 and lower housing part 4, so that the Screws 5, the upper housing part 3 and the lower housing part 4 with each other and with connect the bobbin holder 6.

Am Spulenhalter 6 ist auf der dem Gehäuse 2 abgewandten Seite ein Flansch 15 vorgesehen, der über Halteelemente 16 mit dem Spulenhalter 6 verbunden ist. Innerhalb der inneren Spule 7 und innerhalb des Führungsabschnittes 10 des Führungselementes 9 befindet sich ein im Dauermagnet mit Polschuh 17, der über eine Schraube 18 und ein nicht dargestelltes Gewinde mit dem Flansch 15 verbunden ist. Der Dauermagnet 17 ist dabei in Axialrichtung der Spulen im wesentlichen mittig angeordnet.On the coil holder 6 is on the side facing away from the housing 2, a flange 15th provided, which is connected via holding elements 16 with the coil holder 6. Within the inner coil 7 and within the guide portion 10 of the guide element 9 is a permanent magnet with pole piece 17, which has a Screw 18 and a thread, not shown, is connected to the flange 15. The permanent magnet 17 is arranged centrally in the axial direction of the coils substantially.

Im Gehäuse 2 sind zwei Durchgangsöffnungen 19 und 20 vorgesehen, in denen ein Kontaktelement 21 mit Kontakten 22 axial verschieblich aufgenommen ist. Im Führungsabschnitt 10 des Führungselementes 9 ist ebenfalls axial verschieblich ein Anker 23 angeordnet, der über einen am Anker 23 angebrachten Zapfen 24 und einem Stützelement 25 mit einer Halterung 26 des Kontaktelementes 21 verbunden ist. Die Halterung 26 umgreift dabei das Stützelement 25, dessen Durchmesser größer als der Durchmesser des Zapfens ist, um dadurch den Anker 23 und das Kontaktelement 21 in Axialrichtung miteinander zu verbinden.In the housing 2, two through holes 19 and 20 are provided, in which a Contact element 21 with contacts 22 is received axially displaceable. In the leadership section 10 of the guide member 9 is also axially displaceable an anchor 23 arranged, which has a pin 23 attached to the anchor 24 and a Support member 25 is connected to a holder 26 of the contact element 21. The Holder 26 engages around the support member 25 whose diameter is greater than the diameter of the pin is, thereby the armature 23 and the contact element 21 to connect together in the axial direction.

Der Anker 23 ist in bekannter Weise aus magnetisierbarem Material, wie z. B. Metall hergestellt. Die Durchgangsöffnung 20 ist im Gehäuseunterteil 4 an einem Zwischenboden angeordnet, der mit einer Aufnahme 27 versehen ist. Die Aufnahme 27 ist konzentrisch zur Symmetrieachse des Ankers und dient zur Aufnahme einer Druckfeder 28, die sich zwischen der Aufnahme 27 und einer Druckfläche 29 des Kontaktelements 21 abstützt. Dadurch wird das Kontaktelement in der Darstellung in der Figur in die angehobene Stellung vorgespannt.The armature 23 is in a known manner of magnetizable material, such as. Metal produced. The Through opening 20 is arranged in the lower housing part 4 at an intermediate floor, which is provided with a receptacle 27. The receptacle 27 is concentric with the Symmetry axis of the armature and serves to receive a compression spring 28, which is between the receptacle 27 and a pressure surface 29 of the contact element 21 is supported. As a result, the contact element in the illustration in the figure in the raised Biased position.

Weiterhin ist innerhalb des Gehäuses 2, am Gehäuseoberteil 3 ein Gegenkontaktelement 30 vorgesehen. Das Gegenkontaktelement 30 verfügt über Gegenkontakte 31, die mit den Kontakten 22 in Anlage bringbar sind. Durch eine Druckfeder 32 ist das Gegenkontaktelement 30 in der Darstellung in der Figur nach unten hin vorgespannt, also in Richtung zum Kontaktelement hin. Das Gegenkontaktelement ist dazu geringfügig in Axialrichtung des Ankers beweglich.Furthermore, within the housing 2, on the upper housing part 3, a counter-contact element 30 provided. The mating contact element 30 has mating contacts 31, which can be brought into contact with the contacts 22. By a compression spring 32 is biasing the mating contact element 30 in the illustration in the figure downwards, ie towards the contact element. The mating contact element is to slightly movable in the axial direction of the armature.

Nachfolgende wird die Wirkungs- und Funktionsweise der Erfindung näher erläutert: The following will explain the operation and operation of the invention is explained in more detail:

Das Schütz kann über den Flansch 15, an z. B. einer elektrischen Maschine montiert werden. Diese Montage erfolgt in bekannter Weise und muß daher nicht weiter erläutert werden. Die Anordnung aus Anker 23, Kontaktelement 21 und Kontakt 22 kann in der Darstellung in der Figur in vertikaler Richtung zwischen zwei stabilen Stellungen hin und her bewegt werden. In der ersten, abgesenkten stabilen Stellung gelangt der Anker 23 gegen den Polschuh des Dauermagneten 17 in Anlage. Der Anker 23 wird dabei entgegen der Druckkraft der Druckfeder 28 gehalten. In der zweiten, in der Darstellung in der Figur dargestellten angehobenen stabilen Stellung ist der Anker 23 vom Dauermagneten 17 beabstandet. Das Kontaktelement 21 mit dem Anker 23 wird dabei durch die Druckfeder 28 in die angehobene Stellung vorgespannt. Diese stabile Stellung ist in der Figur dargestellt. In dieser Stellung gelangen die Kontakte 22 und Gegenkontakte 31 außer Eingriff, so dass ein nicht dargestellter Stromkreis geöffnet werden kann. In der ersten, abgesenkten Stellung sind die Kontakte 22 und Gegenkontakte 31 in Eingriff, so dass der Stromkreis geschlossen ist. Alternativ könnte das Schütz auch so gestaltet werden, dass in der abgesenkten Stellung der Stromkreis unterbrochen und in der angehobenen Stellung geschlossen ist.The contactor can via the flange 15, z. B. an electric machine mounted become. This assembly takes place in a known manner and therefore need not be further explained become. The arrangement of armature 23, contact element 21 and contact 22nd can in the figure in the figure in the vertical direction between two stable Positions are moved back and forth. In the first, lowered stable position the armature 23 comes against the pole piece of the permanent magnet 17 in abutment. Of the Anchor 23 is held against the pressure force of the compression spring 28. In the second, raised position shown in the figure in the figure the armature 23 is spaced from the permanent magnet 17. The contact element 21 with the armature 23 is biased by the compression spring 28 in the raised position. This stable position is shown in the figure. Get into this position the contacts 22 and mating contacts 31 disengaged, so that a not shown Circuit can be opened. In the first, lowered position are the contacts 22 and mating contacts 31 in engagement, so that the circuit is closed. Alternatively, the contactor could also be designed so that in the lowered Position of the circuit interrupted and closed in the raised position is.

Das Überführen des Ankers 23 von der ersten in die zweite Stellung und umgekehrt erfolgt durch die beiden Spulen 7 und 8. Zum Überführen des Ankers von der ersten in die zweite Stellung wird die Spule 7 und zum Überführen des Ankers von der zweiten in die erste Stellung die Spule 8 kurzzeitig erregt. Wenn die beiden Spulen 7 und 8 stromlos sind, verweilt der Anker 23 in der ersten oder zweiten stabilen Stellung, je nach dem welche der beiden Spulen 7 und 8 zuvor betätigt wurden.The transfer of the armature 23 from the first to the second position and vice versa takes place through the two coils 7 and 8. For transferring the armature from the first in the second position, the coil 7 and for transferring the armature of the second in the first position, the coil 8 briefly energized. When the two coils 7 and 8 are de-energized, the armature 23 remains in the first or second stable position, depending on which of the two coils 7 and 8 were previously operated.

In der ersten abgesenkten Stellung liegt der Anker 23 am Polschuh des Dauermagneten an. Durch dieses Anliegen wird eine starke Anziehungskraft auf den Anker 23 ausgeübt, so dass der Anker 23 sicher in der ersten stabilen Stellung gehalten wird.In the first lowered position, the armature 23 is located on the pole piece of the permanent magnet at. This concern is a strong attraction to the anchor 23rd is applied, so that the armature 23 is securely held in the first stable position.

Wenn der Dauermagnet 23 in die zweite Stellung überführt wurde, sind Dauermagnet und Anker 23 genügend weit voneinander beabstandet, um keine oder nur eine geringe Anziehungskraft aufeinander ausüben zu können. Dann wird der Anker 23 mit dem Kontaktelement 21 durch die Druckfeder 28 in der zweiten stabilen Stellung gehalten. Somit verweilt der Anker 23 jeweils in seinen beiden stabilen Stellungen, ohne dass die Spulen 7 und 8 aktiviert sein müssen. Das Schütz lässt sich daher energiesparend betreiben.When the permanent magnet 23 has been transferred to the second position, are permanent magnet and anchor 23 spaced sufficiently far apart, no or only a small To be able to exert an attraction on one another. Then the anchor 23 with the contact element 21 by the compression spring 28 in the second stable position held. Thus, the armature 23 dwells in each case in its two stable positions, without the coils 7 and 8 must be activated. The contactor can therefore be operate energy saving.

Dadurch, dass der Dauermagnet nicht am Anker montiert ist, kann dieser sehr leicht gestaltet werden. Auf diese Weise lässt sich die Schaltfrequenz erhöhen. Zudem führt die geringere Masse des Ankers zu einem sicheren Kontakt zwischen den Kontakten 21 und den Gegenkontakten 31 z. B. bei Schüttelbetrieb. Durch die geringeren Anforderungen an die Führungseigenschaften des Ankers vereinfacht sich der Aufbau des Schützes.The fact that the permanent magnet is not mounted on the anchor, this can be very easily be designed. In this way, the switching frequency can be increased. moreover The lower mass of the armature leads to a secure contact between the armatures Contacts 21 and the mating contacts 31 z. B. shaking. By the lesser Requirements for the guide properties of the armature simplifies the Structure of the contactor.

Claims (6)

  1. Bistable contactor comprising at least one coil (7, 8) and an armature (23) which is movable relative to the coil and provided with contacts (22) and which together with the contacts for opening or closing a circuit can be moved by means of the coil from a first stable position into a second stable position, and a permanent magnet (17) in the case of which the armature is supported in one of its stable positions relative to the coil, the permanent magnet being stationary relative to the coil, and a spring element (28) which biases the armature into the other stable position to be spaced apart from the permanent magnet, characterized in that the coils are designed as cylindrical coils that are concentrically arranged relative to one another.
  2. Bistable contactor according to claim 1, characterized in that in the one of the two stable positions the armature rests on the permanent magnet, preferably on the pole shoe thereof.
  3. Bistable contactor according to claim 1 or 2, characterized in that the circuit is closed in the stable position produced by the permanent magnet.
  4. Bistable contactor according to any one of the preceding claims, characterized in that two coils (7, 8) are provided, with the armature being movable into one of its two stable positions by excitation of a respective coil.
  5. Bistable contactor according to any one of the preceding claims, characterized in that the permanent magnet is arranged within the one coil or the coils.
  6. Bistable contactor according to any one of the preceding claims, characterized in that the spring element is designed as a compression spring.
EP00120024A 1999-09-15 2000-09-14 Bistable contactor Expired - Lifetime EP1085549B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29916233U 1999-09-15
DE29916233U DE29916233U1 (en) 1999-09-15 1999-09-15 Bistable contactor

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EP1085549A2 EP1085549A2 (en) 2001-03-21
EP1085549A3 EP1085549A3 (en) 2002-10-16
EP1085549B1 true EP1085549B1 (en) 2005-05-11

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EP00120024A Expired - Lifetime EP1085549B1 (en) 1999-09-15 2000-09-14 Bistable contactor

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EP (1) EP1085549B1 (en)
DE (2) DE29916233U1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1616384A2 (en) * 2003-04-10 2006-01-18 Srinivasa G. N. Prasanna Motion control using electromagnetic forces
US6831535B1 (en) * 2003-11-25 2004-12-14 China Patent Investment Limited Bistable electromagnetic relay
CN100517541C (en) * 2005-01-08 2009-07-22 艾默生网络能源系统有限公司 A Bistable Contactor Driving Circuit
KR100652600B1 (en) * 2005-07-13 2006-12-01 엘지전자 주식회사 Microwave Cooking Machine
EP2600361A1 (en) * 2011-11-29 2013-06-05 Eaton Industries (Netherlands) B.V. Electromagnetic actuator
CN105895452B (en) * 2016-05-27 2017-11-10 浙江英洛华新能源科技有限公司 Closed type HVDC relay

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Publication number Priority date Publication date Assignee Title
BE551075A (en) 1955-09-16
GB1053990A (en) 1963-11-15
CH468072A (en) 1967-12-29 1969-01-31 Bassani Spa Bistable relay with magnetic holding
DE3135360A1 (en) * 1981-09-07 1983-03-24 Siemens AG, 1000 Berlin und 8000 München Electromagnetic switching apparatus
FR2606927B1 (en) 1986-11-19 1991-09-13 Telemecanique Electrique BISTABLE POLARIZED ELECTROMAGNET
DE19509195B4 (en) 1995-03-14 2004-07-22 Siemens Ag DC magnet system with permanent magnet support
US5652558A (en) 1996-04-10 1997-07-29 The Narda Microwave Corporation Double pole double throw RF switch
JP4031197B2 (en) * 1997-09-18 2008-01-09 ホレック・ホーランド・エヌ・ブイ Electromagnetic actuator
DE19744396A1 (en) * 1997-10-08 1999-04-15 Heinrich Kissling Gmbh & Co Kg Bistable relay for heavy current range

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EP1085549A2 (en) 2001-03-21
US6538541B1 (en) 2003-03-25
EP1085549A3 (en) 2002-10-16
DE29916233U1 (en) 2001-01-25
DE50010274D1 (en) 2005-06-16

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