EP0001802B1 - Monostable elctromagnetic rotary armature relay - Google Patents

Monostable elctromagnetic rotary armature relay Download PDF

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Publication number
EP0001802B1
EP0001802B1 EP78101214A EP78101214A EP0001802B1 EP 0001802 B1 EP0001802 B1 EP 0001802B1 EP 78101214 A EP78101214 A EP 78101214A EP 78101214 A EP78101214 A EP 78101214A EP 0001802 B1 EP0001802 B1 EP 0001802B1
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EP
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Prior art keywords
armature
flanks
relay
pole pieces
monostable
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EP78101214A
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German (de)
French (fr)
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EP0001802A1 (en
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Rolf-Dieter Kimpel
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Siemens AG
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Siemens AG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2227—Polarised relays in which the movable part comprises at least one permanent magnet, sandwiched between pole-plates, each forming an active air-gap with parts of the stationary magnetic circuit

Definitions

  • the invention relates to a monostable electromagnetic rotary armature relay with a rotary armature mounted between two free yoke legs of an electromagnet, the two ferromagnetic armature legs of which are coupled via a ferromagnetic center piece and each form a first working air gap with one of the yoke legs, furthermore with a permanent magnet arrangement firmly connected to the armature which, with the two yoke legs, forms a second working air gap which counteracts the first.
  • the armature consists of two cross-shaped bars, one of which is a bar magnet and the other a non-magnetized bar that guides the magnetic flux.
  • the relay is not suitable for use in conventional H-armature magnet systems, on the other hand, the responsiveness of this magnet system is still relatively poor.
  • the bar magnet only has a magnetic pole at both ends, and its permanent magnetic flux closes only via the yoke of the electromagnet.
  • the excitation flow on the other hand, flows solely through the soft iron rod and its air gaps. A superimposition of permanent magnetic flux and excitation flux in the air gaps therefore hardly takes place there. As a result, this known relay is not very sensitive.
  • the bar magnet cannot be adapted to different force relationships, for example the contact springs, in the relay.
  • a polarized rotating anchor system monostable (DE-AS 24 54 967).
  • a relay has a so-called H-armature with two parallel ferromagnetic webs and at least one intermediate permanent magnet. It was proposed to arrange the ferromagnetic webs offset by a certain section of their length in relation to one another in order to bring about monostable switching behavior, so that pole surfaces of pole shoes and armature webs of different sizes lie opposite one another. By reducing the pole faces at two diametrically opposed air gaps an asymmetry of the magnetic circuit is achieved, but this has to be compensated for by an increased excitation flux.
  • this measure alone does not ensure a monostable switching behavior, since the remaining, albeit smaller, pole faces prevent the armature from falling off automatically in the working position of the armature. Rather, in this case too, the monostable characteristic must be guaranteed by additional means, such as separating plates and additional springs attached on one side.
  • the object of the invention is, starting from a monostable rotary armature relay of the type mentioned, to make the local monostable characteristic usable for use in known H-armature magnet systems by constructive design of the armature and thereby to increase the response sensitivity compared to the aforementioned relay.
  • the dimensioning of the flux-carrying parts of the armature should make it possible to adapt the permanent magnetic forces acting in the working air gaps to predetermined values such as response excitation and spring forces.
  • the permanent magnet arrangement has two pole pieces, each of which is arranged parallel to an armature leg and is coupled to it via a permanent magnet, the two permanent magnets being magnetically in series via the center piece of the armature, and in that the two pole pieces are not magnetically coupled directly to the adjacent armature legs.
  • the arrangement of the pole pieces on the armature according to the invention causes these two pole pieces to lie essentially in series in the flux circle of the two permanent magnets.
  • the armature then assumes its rest position when the two pole pieces lie against the yoke legs, so that the continuous flow circuit can close via the yoke.
  • the polarity of the permanent magnets is chosen so that both are in series in the same direction over the middle part of the armature.
  • the magnetic asymmetry of this monostable relay is determined by the magnetic resistances between the ferromagnetic center piece of the armature and the two pole pieces.
  • the idea of the invention is of course also realized if a ferromagnetic intermediate web is present between the pole pieces and the middle piece instead of a continuous air gap, the magnetic resistance of which ensures sufficient asymmetry of the forces.
  • the coupling of the center piece to the two armature legs must be selected appropriately, with various possibilities, from a ferromagnetic coupling to continuous air gaps, also being considered here.
  • the ferromagnetic ankop Plunging is of course the cheapest when the anchor legs with the middle piece consist of one piece.
  • FIG. 1 shows the magnet system for a monostable rotary armature relay. It contains an excitation coil 1, the core 2 of which forms two yoke legs 3 and 4. In the middle between the ends of the yoke legs 3 and 4, an armature 6 is arranged on an axis of rotation 5, which armature consists of two armature legs 7 and 8 arranged symmetrically to the axis of rotation 5 and a ferromagnetic center piece 9. This center piece 9 is magnetically connected to the armature legs 7 and 8 in a suitable manner via the coupling surfaces 9a and 9b.
  • the armature legs 7 and 8 with the middle piece 9 can consist of an iron piece, or in another case the coupling surfaces 9a and 9b can be designed as air gaps.
  • the armature leg 7 forms a working air gap S1 with the yoke leg 3
  • the armature leg 8 forms a corresponding working air gap S 2 with the yoke leg 4.
  • Two permanent magnets 11 and 12 are used to reset the armature, which are each arranged on the armature legs 7 and 8 and each carry a pole piece 13 and 14 parallel to the associated armature leg. These pole pieces, together with the parallel armature leg, include the respective end of the associated yoke leg 3 or 4 approximately in the manner of pliers.
  • the pole piece 13 with the yoke leg 3 forms a further air gap S3 and the pole piece 14 with the yoke leg 4 forms the further air gap S4.
  • the two permanent magnets 10 and 11 are polarized so that they are magnetically in series over the center piece 9 of the armature 6.
  • FIG. 2 shows the course of the flux and the superimposition between excitation flux and permanent magnetic fluxes in a magnet system of FIG. 1.
  • o 1 means the excitation flux generated by the coil; it is drawn as a continuous line.
  • the asymmetry of the magnet system arises from the fact that in the working air gaps on the idle side, i.e. in the air gaps S3 and S4, there is always a greater continuous flow than in the working air gaps S1 and S2 on the working side of the armature.
  • the two partial flows q J 11 and ⁇ 12 of the permanent magnets add up, on the working side they subtract.
  • the magnetic resistances R1 between the center piece 19 of the armature and the pole pieces 13 and 14 determine this asymmetry. Together with the magnetic resistor R2 in the symmetry zone (area around the bearing point) of the center piece 19 and the magnetization states of the magnets 11 and 12, these magnetic resistors R1 are to be dimensioned in such a way that an optimal adaptation to the set of springs occurs.
  • the magnetic resistors R1 and R2 can be both air gaps and iron cross sections of a suitable dimension.
  • the force-path curve of the magnet system shown in FIGS. 1 and 2 is shown in FIG. 3.
  • the force P is recorded over the path s.
  • the magnet system curves are designated by m and the spring rate curve by f.
  • the set of springs is completely symmetrical, so curve f goes exactly in the middle between the rest side R and the working side A through the zero point.
  • the magnet system curve lies below the spring rate curve f; the anchor is pulled to working side A.

Description

Die Erfindung bezieht sich auf ein monostabiles elektromagnetisches Drehankerrelais mit einem zwischen zwei freien Jochschenkeln eines Elektromagneten gelagerten Drehanker, dessen zwei ferromagnetische Ankerschenkel über ein ferromagnetisches Mittelstück gekoppelt sind und jeweils mit einem der Jochschenkel einen ersten Arbeitsluftspalt bilden, weiterhin mit einer mit dem Anker fest verbundenen Dauermagnetanordnung, welche mit den beiden Jochschenkeln je einen zweiten, dem ersten entgegenwirkenden Arbeitsluftspalt bildet.The invention relates to a monostable electromagnetic rotary armature relay with a rotary armature mounted between two free yoke legs of an electromagnet, the two ferromagnetic armature legs of which are coupled via a ferromagnetic center piece and each form a first working air gap with one of the yoke legs, furthermore with a permanent magnet arrangement firmly connected to the armature which, with the two yoke legs, forms a second working air gap which counteracts the first.

Ein derartiges Relais ist in der DE-AS 12 70 691 beschrieben. Dort besteht der Anker aus zwei kreuzförmig übereinander gelegten Stäben, wovon der eine ein Stabmagnet und der andere ein nichtmagnetisierter, den Magnetfluß führender Stab ist. In dieser Konstruktion ist das Relais zum Einsatz in üblichen H-Anker-magnetsystemen nicht geeignet, andererseits ist auch die Ansprechempfindlichkeit dieses Magnetsystems noch relativ schlecht. Denn der Stabmagnet hat lediglich an seinen beiden Enden einen Magnetpol, und sein Dauermagnetfluß schließt sich allein über das Joch des Elektromagneten. Der Erregerfluß dagegen fließt allein über den Weicheisenstab und dessen Luftspalte. Eine Überlagerung von Dauermagnetfluß und Erregerfluß in den Luftspalten findet also dort kaum statt. Dadurch ist dieses bekannte Relais wenig empfindlich. Außerdem kann der Stabmagnet aufgrund seiner festgelegten Form nicht an unterschiedliche Kräfteverhältnisse, beispielsweise der Kontaktfedern, im Relais angepaßt werden.Such a relay is described in DE-AS 12 70 691. There, the armature consists of two cross-shaped bars, one of which is a bar magnet and the other a non-magnetized bar that guides the magnetic flux. In this construction, the relay is not suitable for use in conventional H-armature magnet systems, on the other hand, the responsiveness of this magnet system is still relatively poor. Because the bar magnet only has a magnetic pole at both ends, and its permanent magnetic flux closes only via the yoke of the electromagnet. The excitation flow, on the other hand, flows solely through the soft iron rod and its air gaps. A superimposition of permanent magnetic flux and excitation flux in the air gaps therefore hardly takes place there. As a result, this known relay is not very sensitive. In addition, due to its fixed shape, the bar magnet cannot be adapted to different force relationships, for example the contact springs, in the relay.

Ein anderes bekanntes monostabiles Drehankerrelais (DE-GM 19 00 668) arbeitet ohne dauermagnetischen Anker. Dort muß der Anker durch Federkräfte zurückgestellt werden. Will man einen symmetrischen Kontaktfedersatz einsetzen, so kann die Rückstellung nur durch zusätzliche Rückstellfedern erfolgen. Davon abgesehen ist ein derartiges neutrales Magnetsystem auch verhältnismäßig unempfindlich.Another known monostable rotary armature relay (DE-GM 19 00 668) works without a permanent magnetic armature. There the anchor must be reset by spring forces. If you want to use a symmetrical contact spring set, the reset can only be done with additional return springs. Apart from that, such a neutral magnet system is also relatively insensitive.

Daneben wurde auch bereits vorgeschlagen, ein polarisiertes Drehankersystem monostabil zu machen (DE-AS 24 54 967). Ein derartiges Relais besitzt einen sogenannten H-Anker mit zwei parallelen ferromagnetischen Stegen und mindestens einem zwischenliegenden Dauermagneten. Dabei wurde vorgeschlagen, zur Herbeiführung monostabilen Schaltverhaltens die ferromagnetischen Stege um einen bestimmten Abschnitt ihrer Länge gegeneinander versetzt anzuordnen, so daß sich jeweils unterschiedlich große Polflächen von Polschuhen und Ankerstegen gegenüberliegen. Durch die Verkleinerung der Polflächen an zwei diametral gegenüberliegenden Luftspalten erreicht man zwar eine Unsymmetrie des Magnetkreises, muß dies jedoch durch einen erhöhten Erregerfluß ausgleichen. Außerdem läßt sich durch diese Maßnahme allein noch kein monostabiles Schaltverhalten sicherstellen, da die verbleibenden, wenn auch kleineren Polflächen in der Arbeitsstellung des Ankers ein selbsttätiges Abfallen verhindern. Vielmehr muß auch in diesem Fall durch zusätzliche Mittel, wie einseitig angebrachte Trennbleche und Zusatzfedern, die monostabile Characteristik gewährleistet werden.In addition, it has also already been proposed to make a polarized rotating anchor system monostable (DE-AS 24 54 967). Such a relay has a so-called H-armature with two parallel ferromagnetic webs and at least one intermediate permanent magnet. It was proposed to arrange the ferromagnetic webs offset by a certain section of their length in relation to one another in order to bring about monostable switching behavior, so that pole surfaces of pole shoes and armature webs of different sizes lie opposite one another. By reducing the pole faces at two diametrically opposed air gaps an asymmetry of the magnetic circuit is achieved, but this has to be compensated for by an increased excitation flux. In addition, this measure alone does not ensure a monostable switching behavior, since the remaining, albeit smaller, pole faces prevent the armature from falling off automatically in the working position of the armature. Rather, in this case too, the monostable characteristic must be guaranteed by additional means, such as separating plates and additional springs attached on one side.

Aufgabe der Erfindung ist es, ausgehend von einem monostabilen Drehankerrelais der eingangs erwähnten Art durch konstruktive Gestaltung des Ankers die dortige monostabile Charakteristik für den Einsatz in bekannten H-Anker-Magnetsystemen verwendbar zu machen und dabei gegenüber dem eingangs erwähnten Relais die Ansprechempfindlichkeit zu steigern. Außerdem soll durch die Dimensionierung der flußführenden Teile des Ankers die Möglichkeit gegeben sein, die in den Arbeitsluftspalten wirkenden dauermagnetischen Kräfte an vorgegebene Werte, wie Ansprecherregung und Federkräfte, anzupassen.The object of the invention is, starting from a monostable rotary armature relay of the type mentioned, to make the local monostable characteristic usable for use in known H-armature magnet systems by constructive design of the armature and thereby to increase the response sensitivity compared to the aforementioned relay. In addition, the dimensioning of the flux-carrying parts of the armature should make it possible to adapt the permanent magnetic forces acting in the working air gaps to predetermined values such as response excitation and spring forces.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Dauermagnetanordnung zwei Polstücke besitzt, welche jeweils parallel zu einem Ankerschenkel angeordnet und über je einen Dauermagneten mit diesem gekoppelt sind, wobei die beiden Dauermagnete über das Mittelstück des Ankers magnetisch in Serie liegen, und daß die beiden Polstücke mit den jeweils benachbarten Ankerschenkeln magnetisch nicht direkt gekoppelt sind.According to the invention, this object is achieved in that the permanent magnet arrangement has two pole pieces, each of which is arranged parallel to an armature leg and is coupled to it via a permanent magnet, the two permanent magnets being magnetically in series via the center piece of the armature, and in that the two pole pieces are not magnetically coupled directly to the adjacent armature legs.

Die erfindungsgemäße Anordnung der Polstücke am Anker bewirkt, daß diese beiden Polstücke im wesentlichen in Serie im Flußkreis der beiden Dauermagnete liegen. Der Anker nimmt also dann seine Ruhelage ein, wenn die beiden Polstücke an den Jochschenkeln anliegen, so daß sich der Dauerflußkreis über das Joch schließen kann. Die Polung der Dauermagnete ist so gewählt, daß beide über das Mittelstück des Ankers gleichsinnig in Serie liegen. Die magnetische Unsymmetrie dieses monostabilen Relais wird durch die magnetischen Widerstände zwischen dem ferromagnetischen Mittelstück des Ankers und den beiden Polstücken bestimmt. Dabei wird natürlich der Gedanke der Erfindung auch dann verwirklicht wenn zwischen den Polstücken und dem Mittelstück anstelle eines durchgehenden Luftspaltes ein ferromagnetischer Zwischensteg vorhanden ist, dessen magnetischer Widerstand eine ausreichende Unsymmetrie der Kräfte gewährleistet.The arrangement of the pole pieces on the armature according to the invention causes these two pole pieces to lie essentially in series in the flux circle of the two permanent magnets. The armature then assumes its rest position when the two pole pieces lie against the yoke legs, so that the continuous flow circuit can close via the yoke. The polarity of the permanent magnets is chosen so that both are in series in the same direction over the middle part of the armature. The magnetic asymmetry of this monostable relay is determined by the magnetic resistances between the ferromagnetic center piece of the armature and the two pole pieces. The idea of the invention is of course also realized if a ferromagnetic intermediate web is present between the pole pieces and the middle piece instead of a continuous air gap, the magnetic resistance of which ensures sufficient asymmetry of the forces.

Ebenso muß die Ankopplung des Mittelstücks an die beiden Ankerschenkel geeignet gewählt werden, wobei auch hier verschiedene Möglichkeiten, von einer ferromagnetischen Ankopplung bis zu durchgehenden Luftspalten, in Betracht kommen. Die ferromagnetische Ankopplung ist natürlich dann am günstigsten, wenn die Ankerschenkel mit dem Mittelstück aus einem Stück bestehen. Durch die Dimensionierung dieser magnetischen Widerstände, nämlich zum einen im Mittelstück zwischen den beiden Ankerschenkeln und zum anderen zwischen den beiden Polstücken und diesem Mittelstück, läßt sich eine optimale Anpassung des Magnetsystems an den Federsatz erreichen.Likewise, the coupling of the center piece to the two armature legs must be selected appropriately, with various possibilities, from a ferromagnetic coupling to continuous air gaps, also being considered here. The ferromagnetic ankop Plunging is of course the cheapest when the anchor legs with the middle piece consist of one piece. By dimensioning these magnetic resistances, namely on the one hand in the middle piece between the two armature legs and on the other hand between the two pole pieces and this middle piece, an optimal adaptation of the magnet system to the spring set can be achieved.

Die Erfindung wird nachfolgend anhand der Zeichnung an einem Ausführungsbeispiel näher erläutert.The invention is explained below with reference to the drawing using an exemplary embodiment.

Es zeigen

  • Fig. 1 den Aufbau eines Magnetsystems für ein monostabiles gepoltes Drehankerrelais,
  • Fig. 2 den Flußverlauf in einem Magnetsystem gemäß Fig. 1.
  • Fig. 3 ein Diagramm mit dem Kraft-Weg-Verlauf bei einem Relais mit dem Magnetsystem von Fig. 1.
Show it
  • 1 shows the structure of a magnet system for a monostable polarized rotary armature relay,
  • FIG. 2 shows the flow course in a magnet system according to FIG. 1.
  • 3 shows a diagram with the force-displacement curve for a relay with the magnet system from FIG. 1.

Die Fig. 1 zeigt das Magnetsystem für ein monostabiles Drehankerrelais. Es enthält eine Erregerspule 1, dessen Kern 2 zwei Jochschenkel 3 und 4 bildet. In der Mitte zwischen den Enden der Jochschenkel 3 und 4 ist auf einer Drehachse 5 ein Anker 6 angeordnet, welcher aus zwei symmetrisch zur Drehachse 5 angeordneten Ankerschenkeln 7 und 8 sowie einem ferromagnetischen Mittelstück 9 besteht. Dieses Mittelstück 9 ist über die Ankoppelflächen 9a und 9b in geeigneter Weise magnetisch an die Ankerschenkel 7 und 8 angeschlossen. Je nachdem, wie die Charakteristik des Magnetkreises aussehen soll, können beispielsweise die Ankerschenkel 7 und 8 mit dem Mittelstück 9 aus einem Eisenstück bestehen, oder in einem anderen Fall können die Ankoppelflächen 9a und 9b als Luftspalte ausgebildet sein. Der Ankerschenkel 7 bildet mit dem Jochschenkel 3 einen Arbeitsluftspalt S1, der Ankerschenkel 8 mit dem Jochschenkel 4 einen entsprechenden Arbeitsluftspalt S2. Bei Erregung der Spule 1 werden also beide Ankerschenkel 7 und 8 an die gegenüberliegenden Jochschenkel 3 und 4 angezogen.1 shows the magnet system for a monostable rotary armature relay. It contains an excitation coil 1, the core 2 of which forms two yoke legs 3 and 4. In the middle between the ends of the yoke legs 3 and 4, an armature 6 is arranged on an axis of rotation 5, which armature consists of two armature legs 7 and 8 arranged symmetrically to the axis of rotation 5 and a ferromagnetic center piece 9. This center piece 9 is magnetically connected to the armature legs 7 and 8 in a suitable manner via the coupling surfaces 9a and 9b. Depending on what the characteristic of the magnetic circuit should look like, the armature legs 7 and 8 with the middle piece 9 can consist of an iron piece, or in another case the coupling surfaces 9a and 9b can be designed as air gaps. The armature leg 7 forms a working air gap S1 with the yoke leg 3, the armature leg 8 forms a corresponding working air gap S 2 with the yoke leg 4. When the coil 1 is excited, both armature legs 7 and 8 are thus attracted to the opposite yoke legs 3 and 4.

Zur Rückstellung des Ankers dienen zwei Dauermagnete 11 und 12, welche jeweils auf den Ankerschenkeln 7 bzw. 8 angeordnet sind und jeweils ein zum zugehörigen Ankerschenkel paralleles Polstück 13 bzw. 14 tragen. Diese Polstücke umfassen also zusammen mit dem parallelen Ankerschenkel etwa zangenförmig das jeweilige Ende des zugehörigen Jochschenkels 3 bzw. 4. Dabei bildet das Polstück 13 mit dem Jochschenkel 3 einen weiteren Luftspalt S3 und das Polstück 14 mit dem Jochschenkel 4 den weiteren Luftspalt S4. Die beiden Dauermagnete 10 und 11 sind so polarisiert, daß sie über das Mittelstück 9 des Ankers 6 magnetisch in Reihe liegen.Two permanent magnets 11 and 12 are used to reset the armature, which are each arranged on the armature legs 7 and 8 and each carry a pole piece 13 and 14 parallel to the associated armature leg. These pole pieces, together with the parallel armature leg, include the respective end of the associated yoke leg 3 or 4 approximately in the manner of pliers. The pole piece 13 with the yoke leg 3 forms a further air gap S3 and the pole piece 14 with the yoke leg 4 forms the further air gap S4. The two permanent magnets 10 and 11 are polarized so that they are magnetically in series over the center piece 9 of the armature 6.

Die Fig. 2 zeigt den Flußverlauf und die Überlagerung zwischen Erregerfluß und Dauermagnetflüssen bei einem Magnetsystem der Fig. 1. Dabei bedeutet o 1 den durch die Spule erzeugten Erregerfluß; er ist als durchgehende Linie gezeichnet. q J 11, als gestrichelte Linie gezeichnet, bedeutet den durch den Dauer-, magneten 11 erzeugten Dauerfluß, während q J 12, punktiert gezeichnet, den vom Dauermagneten 12 erzeugten Dauerfluß darstellt. Wie aus der Fig. 2 zu entnehmen ist, entsteht die Unsymmetrie des Magnetsystems dadurch, daß in den Arbeitsluftspalten der Ruheseite, also in den Luftspalten S3 und S4, immer ein größerer Dauerfluß vorliegt als in den Arbeitsluftspalten S1 und S2 der Arbeitsseite des Ankers. Auf der Ruheseite addieren sich die beiden Teilflüsse q J 11 und φ 12 der Dauermagnete, auf der Arbeitsseite subtrahieren sie sich. Die magnetischen Widerstände R1 zwischen dem Mittelstück 19 des Ankers und den Polstücken 13 bzw. 14 bestimmen diese Unsymmetrie. Zusammen mit dem magnetischen Widerstand R2 in der Symmetriezone (Bereich um die Lagerstelle) des Mittelstücks 19 und den Magnetisierungszuständen der Magnete 11 und 12 sind diese magnetischen Widerstände R1 so zu dimensionieren, daß eine optimale Anpassung an den Federsatz entsteht. Die magnetischen Widerstände R1 und R2 können dabei sowohl Luftspalte als auch Eisenquerschnitte geeigneter Dimension sein.FIG. 2 shows the course of the flux and the superimposition between excitation flux and permanent magnetic fluxes in a magnet system of FIG. 1. Here, o 1 means the excitation flux generated by the coil; it is drawn as a continuous line. q J 11, drawn as a dashed line, means the permanent flux generated by the permanent magnet 11, while q J 12, dotted, represents the permanent flux generated by the permanent magnet 12. As can be seen from Fig. 2, the asymmetry of the magnet system arises from the fact that in the working air gaps on the idle side, i.e. in the air gaps S3 and S4, there is always a greater continuous flow than in the working air gaps S1 and S2 on the working side of the armature. On the idle side, the two partial flows q J 11 and φ 12 of the permanent magnets add up, on the working side they subtract. The magnetic resistances R1 between the center piece 19 of the armature and the pole pieces 13 and 14 determine this asymmetry. Together with the magnetic resistor R2 in the symmetry zone (area around the bearing point) of the center piece 19 and the magnetization states of the magnets 11 and 12, these magnetic resistors R1 are to be dimensioned in such a way that an optimal adaptation to the set of springs occurs. The magnetic resistors R1 and R2 can be both air gaps and iron cross sections of a suitable dimension.

Durch Veränderung der magnetischen Widerstände R1 und R2 können alle Zwischenstufen zwischen einem monostabilen Magnetsystem und einem bistabilen Magnetsystem erzeugt werden. Dieser letztere Extremfall, bei dem das Mittelstück 19 aufgetrennt und mit den Polstücken verbunden wird, entspricht dem bekannten H-Anker eines bistabilen gepolten Systems und ist damit nicht mehr Gegenstand der vorliegenden Erfindung.By changing the magnetic resistances R1 and R2, all intermediate stages between a monostable magnet system and a bistable magnet system can be generated. This latter extreme case, in which the middle piece 19 is separated and connected to the pole pieces, corresponds to the known H-armature of a bistable polarized system and is therefore no longer the subject of the present invention.

Den Kraft-Weg-Verlauf des in den Fig. 1 und 2 dargestellten Magnetsystems zeigt Fig. 3. Über dem Weg s ist die Kraft P aufgezeichnet. Dabei sid mit m die Magnetsystemkurven und mit f die Federsatzkurve bezeichnet. Der Federsatz ist völlig symmetrische aufgebaut, die Kurve f geht also genau in der Mitte zwischen der Ruheseite R und der Arbeitsseite A durch den Nullpunkt. Solange durch die Spule keine Erregung erzeugt wird, gilt die Magnetsystemkurve m (0 = 0). Diese Magnetkraftkurve liegt also oberhalb des Federsatzes; das Magnetsystem zieht, den Anker auf die Ruheseite R. Wird das Magnetsystem erregt, so gilt die Kurve m (0 = Θan). Die Magnetsystemkurve liegt unterhalb der Federsatzkurve f; der Anker wird auf die Arbeitsseite A gezogen.The force-path curve of the magnet system shown in FIGS. 1 and 2 is shown in FIG. 3. The force P is recorded over the path s. The magnet system curves are designated by m and the spring rate curve by f. The set of springs is completely symmetrical, so curve f goes exactly in the middle between the rest side R and the working side A through the zero point. As long as no excitation is generated by the coil, the magnet system curve m (0 = 0) applies. This magnetic force curve is therefore above the set of springs; the magnet system pulls the armature to the rest side R. If the magnet system is excited, the curve m (0 = Θ on ) applies. The magnet system curve lies below the spring rate curve f; the anchor is pulled to working side A.

Claims (4)

1. Monostable electromagnetic rotary armature relay comprising, mounted between two free yoke flanks (3, 4) of an electromagnet (1, 2) a rotary armature whose two ferromagnetic armature flanks (7, 8) are coupled via a ferromagnetic central component (9) and each form a first operating air gap (S1, S2) with one of the yoke flanks (3, 4), furthermore comprising a permanent magnet arrangement which is firmly connected to the armature and which forms a second operating air gap (S3, S4) which counteracts the first, with each of the two yoke flanks (3, 4), characterised in that the permanent magnet arrangement possesses two pole pieces (13, 14) each of which is arranged parallel to an armature flank (7, 8) and is coupled thereto via a permanent magnet (11, 12), where the two permanent magnets are arranged magnetically in series via the central component (9, 19) of the armature, and that the two pole pieces (13, 14) are coupled magnetically non-directly to the adjacent armature flanks (8, 7).
2. Rotary armature relay as claimed in claim 1, characterised in that the armature flanks (7, 8) and the central component (9; 19) consist of one piece.
3. Rotary armature relay as claimed in claim 1 or 2, characterised in that a ferromagnetic arm is formed between the two pole pieces (13, 14) and the adjacent armature flanks (8, 7).
4. Rotary armature relay as claimed in one of the claims 1 to 3, characterised in that a constant air gap is formed between the two pole pieces (13, 14) and the adjacent armature flanks (8, 7).
EP78101214A 1977-11-09 1978-10-24 Monostable elctromagnetic rotary armature relay Expired EP0001802B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2750142A DE2750142C2 (en) 1977-11-09 1977-11-09 Monostable electromagnetic rotating armature relay
DE2750142 1977-11-09

Publications (2)

Publication Number Publication Date
EP0001802A1 EP0001802A1 (en) 1979-05-16
EP0001802B1 true EP0001802B1 (en) 1981-04-29

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Application Number Title Priority Date Filing Date
EP78101214A Expired EP0001802B1 (en) 1977-11-09 1978-10-24 Monostable elctromagnetic rotary armature relay

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US (1) US4206431A (en)
EP (1) EP0001802B1 (en)
JP (1) JPS6034773B2 (en)
AT (1) AT373721B (en)
DE (1) DE2750142C2 (en)
DK (1) DK145479C (en)
IT (1) IT1100058B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005921A1 (en) * 1980-02-16 1981-09-03 Harting Elektronik Gmbh, 4992 Espelkamp Monostable rotary armature system - uses soft magnetic armature with inserted permanent magnet having pole which is adjacent armature pole
DE3006948A1 (en) * 1980-02-25 1981-09-10 Siemens AG, 1000 Berlin und 8000 München POLARIZED MAGNETIC SYSTEM
FR2520152B1 (en) * 1982-01-20 1986-02-28 Telemecanique Electrique ELECTRO-MAGNET WITH MOBILE EQUIPMENT WITH PERMANENT MAGNET WITH MONOSTABLE OPERATION
AT388258B (en) * 1987-05-13 1989-05-26 Schrack Elektronik Ag MONOSTABLE ELECTROMAGNETIC RELAY
DE10035173C1 (en) * 2000-07-19 2002-05-08 Matsushita Electric Works Europe Ag Magnetic system for electromagnetic relay has 2 parallel separate iron parts associated with common coil device
JP6168785B2 (en) * 2012-03-30 2017-07-26 富士通コンポーネント株式会社 Polarized electromagnetic relay
CN106469630B (en) * 2015-08-18 2019-03-12 泰科电子(深圳)有限公司 Polarity relay
CN107039213A (en) * 2017-05-24 2017-08-11 湖北师范大学 A kind of bistable relay

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Publication number Priority date Publication date Assignee Title
US2825783A (en) * 1955-07-18 1958-03-04 Raymond T Moloney Polarized relay
FR1353958A (en) * 1963-04-22 1964-02-28 App Electro Mecanique G P S A Permanent magnet electromagnetic relays
DE1270691B (en) * 1963-09-11 1968-06-20 Const Radioelectriques De Mont Electromagnetic rotating armature relay
DE1900668U (en) * 1964-02-01 1964-09-17 Bosch Gmbh Robert RELAY WITH SWIVELING ARMATURE.
CH522285A (en) * 1970-02-20 1972-06-15 Zellweger Uster Ag Power surge switch
US3906416A (en) * 1973-11-12 1975-09-16 Anthony E Sprando Electrical relay
DE2407184C2 (en) * 1974-02-15 1982-09-02 Schaltbau GmbH, 8000 München Electromagnetic relay with two armatures
DE2454967C3 (en) * 1974-05-15 1981-12-24 Hans 8024 Deisenhofen Sauer Poled electromagnetic relay
FR2358006A1 (en) * 1976-07-09 1978-02-03 Manuf Fse App Electr DEVICE FORMING ELECTRO-MAGNET, SUCH AS THAT OF A RELAY

Also Published As

Publication number Publication date
US4206431A (en) 1980-06-03
DK145479C (en) 1983-04-18
JPS6034773B2 (en) 1985-08-10
EP0001802A1 (en) 1979-05-16
DK496678A (en) 1979-05-10
AT373721B (en) 1984-02-10
DE2750142A1 (en) 1979-05-10
DE2750142C2 (en) 1985-08-08
JPS5475559A (en) 1979-06-16
IT7829394A0 (en) 1978-11-03
ATA723878A (en) 1983-06-15
IT1100058B (en) 1985-09-28
DK145479B (en) 1982-11-22

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