EP1469500B1 - Magnet system for a relay with a rocker armature - Google Patents

Magnet system for a relay with a rocker armature Download PDF

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Publication number
EP1469500B1
EP1469500B1 EP20030008656 EP03008656A EP1469500B1 EP 1469500 B1 EP1469500 B1 EP 1469500B1 EP 20030008656 EP20030008656 EP 20030008656 EP 03008656 A EP03008656 A EP 03008656A EP 1469500 B1 EP1469500 B1 EP 1469500B1
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EP
European Patent Office
Prior art keywords
hinged armature
yoke
magnet system
armature
magnet
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 - Fee Related
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EP20030008656
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German (de)
French (fr)
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EP1469500A1 (en
Inventor
Jürgen Bross
Josef Herschberger
Maximilian Kellner
Stephan Kleine
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Siemens AG
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Siemens AG
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Publication date
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Priority to DE50307420T priority Critical patent/DE50307420D1/en
Priority to EP20030008656 priority patent/EP1469500B1/en
Publication of EP1469500A1 publication Critical patent/EP1469500A1/en
Application granted granted Critical
Publication of EP1469500B1 publication Critical patent/EP1469500B1/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
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/26—Parts movable about a knife edge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H01H71/323—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with rotatable armature

Definitions

  • the invention relates to a magnet system for a hinged armature relay with a U-shaped yoke according to the preamble of claim 1.
  • a magnet system is known for example from DE 2029 607 A and DE 30 08 783 A.
  • Folding armature magnet systems are commonly used in residual current (RCD) or residual current (DI) circuit breakers.
  • the pole face of the magnetic yoke over which the hinged armature can be tilted is exposed to a particular wear, in particular due to the low-loadable soft magnetic material.
  • By resulting in opening and closing of the hinged armature abrasion or Aufsch on the tilting edge the air gap between the hinged armature and the magnetic yoke changes, whereby the response of the magnet system is not affected in an undesirable manner. Because of the typically high sensitivity of hinged armature magnet systems, even minor wear or contamination effects are relevant.
  • the magnetic system known from DE 41 10 660 C2 has an additional armature support member on the yoke pole, on which the hinged armature is tiltably mounted.
  • Another way to increase the wear resistance of a hinged armature magnet system for example, in the use of galvanic coatings of the magnetic parts. In any case, the design and manufacturing costs are considerably increased by the wear protection measures.
  • the invention has for its object to provide a magnetic system for a hinged armature relay, which has a structurally simple design, a particularly low dependence of the tripping of the number of cycles.
  • an electromagnetic relay which comprises a magnetic yoke and a relay winding arranged on a coil body.
  • an armature can not be tilted over an edge in the region of one of the Jochpol inhabit of the magnetic yoke, but tilted over an edge adjacent to the Jochpol constituent the yoke, which is arranged on the side facing the bobbin.
  • the armature is mounted on a projection of the coil flange, which belongs to the bobbin on which the winding is applied.
  • This magnetic system is constructed in a manner known in principle as a hinged armature system, wherein essential parts of the system a U-shaped, in cross section preferably rectangular magnetic yoke, arranged on a bobbin, as well Exciting coil called relay winding, as well as in the folded, ie closed state on both yoke poles of the magnetic yoke resting hinged armature are.
  • the hinged armature can be tilted over the Jochpol of that leg of the magnetic yoke, which is not surrounded by the relay winding.
  • a support element is provided for wear protection, which is formed integrally with the bobbin.
  • a bearing surface of the integrally formed with the bobbin as a combination part supporting element for the hinged armature is preferably arranged at least approximately parallel to the adjacent pole face of the magnetic yoke.
  • the bearing surface if the hinged armature rests on both pole faces of the legs of the magnetic yoke, at least slightly further spaced from the hinged armature than the Jochpol
  • the hinged armature rests on the bearing surface of the support body and tilts in the further movement of a second bearing surface formed by the support body.
  • the tilting axis of the hinged armature thus displaced during the tilting movement of the surrounded with the excitation coil leg of the magnetic yoke away.
  • the lever arm formed by the hinged armature between the leg of the magnet yoke carrying the coil and the tilting axis is shorter than at a larger opening angle of the hinged armature.
  • located in the extension of the hinged armature second lever arm which projects beyond the magnetic yoke and is generally spring-loaded, at the beginning of the tilting motion in comparison to the further movement relatively long.
  • the support body comprising the bobbin and the support element preferably has an angled shape, either an L- or a U-shape, wherein the relay winding surrounds a so-called coil leg and the support element is formed by a longitudinal leg aligned substantially parallel to the hinged armature.
  • An additional leg in the case of the U-shaped design of the support body is optionally arranged parallel to the support member having longitudinal leg opposite this.
  • a permanent magnet can be positioned with a particularly small distance from the hinged armature by the longitudinal leg and possibly the opposite leg has or have a corresponding breakthrough in the region between the legs of the magnetic yoke. Like the permanent magnet, the yoke legs of the magnetic yoke also penetrate the longitudinal leg.
  • the bobbin is preferably integrally connected by means of so-called support flanks with the support element.
  • the supporting flanks surround the yoke legs having the first tilting axis such that the hinged armature does not touch the supporting flanks, i. no corresponding friction surfaces between moving parts are given.
  • the support flanks are preferably thickened in the direction of extension of the yoke leg compared to the adjoining region of the longitudinal limb, whereby the longitudinal limb of the support body is mechanically reinforced in the region of an opening for the yoke limb adjacent to its support element.
  • a holding frame connected to the hinged armature is preferably provided, which surrounds the Jochpol lake and is fixed on the longitudinal leg of the bobbin.
  • the advantage of the invention is in particular that in a hinged armature magnet system, a support of the hinged armature is realized on the tilting axis by suitable design of the bobbin without additional component.
  • FIGS. 1 and 2 show the structure of a magnet system 1 for a hinged armature relay, which comprises a magnetic yoke 2 with a first yoke leg 3 and a second yoke leg 4 and a hinged armature 5.
  • the first yoke leg 3 penetrates a coil leg 7 of a support body 8 surrounded by a relay winding or exciting coil 6, which is manufactured as a plastic injection molded part and whose shape is shown in more detail in FIGS. 3 and 4.
  • a permanent magnet 9 which attracts the hinged armature 5.
  • the magnetic effect of the relay coil 6 is opposite to the magnetic effect of the permanent magnet 9.
  • the hinged armature 5 rests on in each case one Jochpol nature 11,12 of the first yoke leg 3 and second yoke leg 4.
  • a tilting edge 13 for the hinged armature 5 is formed.
  • the Jochpol nature 12 adjacent is a bearing surface 14 as part of a support member formed by the support body 8 15 for the hinged armature 5.
  • the support member 15 is integrally formed on a longitudinal leg 16, which forms a bobbin 17 together with the coil leg 7, which carries the excitation coil 6.
  • the support member 15 and the bobbin 17 comprehensive support body 8 is formed in the illustrated embodiment as a one-piece plastic injection molded part, to which the longitudinal leg 16 parallel opposite a base leg is formed.
  • the base leg 18 is mechanically connected to a base plate 19, the support body 1 by means of several Snap-in elements 20 carries and also the articulation of the tension spring 10 is used.
  • the coil leg 7 may also be attached directly to a base plate, in which case the base leg 18 may be omitted.
  • the bobbin 17 constructed from the coil leg 7 and the longitudinal leg 16 and the support element 15 form a unitary support body 8.
  • the one support point for the hinged armature 5 forming support member 15 has a second tilting edge 21, about which the hinged armature 5 is tilted.
  • the second tilting edge 21 is slightly spaced from the hinged armature 5 in the folded state, so that it initially rotates when the magnet system 1 responds around the first tilting edge 13 formed by the magnetic yoke 2.
  • the bearing surface 14 already after a short tilting movement of the hinged armature 5 contacted the bearing surface 14, so that in the further movement only the second tilting edge 21 is effective.
  • the wear on the Jochpol requirements 12 is minimized thereby.
  • the hinged armature 5 has a first lever arm 22, 22 'which extends from a front edge 23, which is arranged in the region of the yoke pole surface 11 of the first yoke leg 3 when the hinged armature 5 is folded, to the first tilting edge 13 or to the second tilting edge 21 , Furthermore, the hinged armature 5 in extension of the first lever arm 22, 22 'has a second lever arm 24, 24', which extends from the first tilting edge 13 or from the second tilting edge 21 to a trailing edge 25 on which the tension spring 10 attacks.
  • the hinged armature 5 already lifts off from the first tilting edge 13 shortly after the magnetic system 1 responds, ie already at a low opening angle, and only loads the second tilting edge 21.
  • a slight wear on the tilting edge 21 formed by the support body 8 is practically irrelevant to the release characteristics of the magnet system 1, since the hinged armature 5 rests exclusively on the yoke pole surfaces 11, 12 in the folded-on state.
  • the bearing surface 14 of the longitudinal limb 16 is at least slightly spaced, for example by a few hundredths of a millimeter, from the yoke pole surfaces 11, 12.
  • the support element 15 is connected to the bobbin 17 by means of two supporting flanks 26, which release an opening 27 for the second yoke leg 4. Furthermore, an opening 28 for the permanent magnet 9 is provided in the longitudinal leg 16.
  • the hinged armature 5 is connected to the longitudinal leg 16 of the support body 8 by means of a holding frame 29, which connects on the one hand in the region of the tilting edges 13,21 to the hinged armature 5 and on the other hand, the support flanks 26 and the Jochpol vom 11,12 embracing, flat on the longitudinal leg 16th rests.
  • FIGS 6a and 6b show in each case in a schematic cross-sectional view of a detail of the storage of the hinged armature 5 in the switching device according to FIG 5.
  • the hinged armature 5 is in lifted, i. open position (FIG. 6a) or in closed, i. on the Jochpolvid 11,12 resting position (FIG 6b).
  • the bearing surface 14 is only slightly spaced therefrom with the hinged armature 5 closed, while the bearing leg 16 is spaced slightly further away from the hinged armature 5 in the region between the yoke legs 3, 4. A resting of the hinged armature 5 on the bearing leg 16 in this area is thus excluded.
  • the magnet system 1 is characterized in particular by a low number of parts as well as a low material and assembly outlay, whereby a high degree of independence of the release characteristics is achieved by the switching cycle number.

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

Description

Die Erfindung betrifft ein Magnetsystem für ein Klappankerrelais mit einem U-förmigen Magnetjoch nach dem Oberbegriff von Patentanspruch 1. Ein derartiges Magnetsystem ist beispielsweise aus der DE 2029 607 A und der DE 30 08 783 A bekannt.The invention relates to a magnet system for a hinged armature relay with a U-shaped yoke according to the preamble of claim 1. Such a magnet system is known for example from DE 2029 607 A and DE 30 08 783 A.

Klappanker-Magnetsysteme werden häufig in Fehlerstrom (FI)-oder Differenzstrom (DI)-Schutzschaltern eingesetzt. Die Polfläche des Magnetjochs, über welche der Klappanker kippbar ist, ist insbesondere aufgrund des nur gering belastbaren weichmagnetischen Materials einem besonderen Verschleiß ausgesetzt. Durch einen beim Öffnen und Schließen des Klappankers entstehenden Abrieb oder Aufwurf an der Kippkante ändert sich der Luftspalt zwischen dem Klappanker und dem Magnetjoch, wodurch das Ansprechverhalten des Magnetsystems in nicht gewünschter Weise beeinflusst wird. Wegen der üblicherweise hohen Empfindlichkeit von Klappanker-Magnetsystemen sind selbst geringe Verschleiß- oder Verunreinigungseffekte relevant. Um solchen Effekten zu begegnen, weist beispielsweise das aus der DE 41 10 660 C2 bekannte Magnetsystem am Jochpol, an welchem der Klappanker kippbar gelagert ist, ein zusätzliches Ankerstützglied auf. Eine weitere Möglichkeit, die Verschleißfestigkeit eines Klappanker-Magnetsystems zu erhöhen, besteht beispielsweise in der Verwendung galvanischer Überzüge der magnetischen Teile. In jedem Fall ist durch die Verschleißschutzmaßnahmen der konstruktive und fertigungstechnische Aufwand erheblich erhöht.Folding armature magnet systems are commonly used in residual current (RCD) or residual current (DI) circuit breakers. The pole face of the magnetic yoke over which the hinged armature can be tilted is exposed to a particular wear, in particular due to the low-loadable soft magnetic material. By resulting in opening and closing of the hinged armature abrasion or Aufwurf on the tilting edge, the air gap between the hinged armature and the magnetic yoke changes, whereby the response of the magnet system is not affected in an undesirable manner. Because of the typically high sensitivity of hinged armature magnet systems, even minor wear or contamination effects are relevant. In order to counteract such effects, for example, the magnetic system known from DE 41 10 660 C2 has an additional armature support member on the yoke pole, on which the hinged armature is tiltably mounted. Another way to increase the wear resistance of a hinged armature magnet system, for example, in the use of galvanic coatings of the magnetic parts. In any case, the design and manufacturing costs are considerably increased by the wear protection measures.

Der Erfindung liegt die Aufgabe zugrunde, ein Magnetsystem für ein Klappankerrelais anzugeben, welches bei konstruktiv einfachem Aufbau eine besonders geringe Abhängigkeit des Auslöseverhaltens von der Schaltspielzahl aufweist.The invention has for its object to provide a magnetic system for a hinged armature relay, which has a structurally simple design, a particularly low dependence of the tripping of the number of cycles.

Aus der EP 0 136 592 A1 ist ein elektromagnetisches Relais bekannt, das ein Magnetjoch und eine auf einem Spulenkörper angeordnete Relaiswicklung umfasst. Bei einer Ausführungsform ist ein Anker nicht über eine Kante im Bereich einer der Jochpolflächen des Magnetjochs kippbar, sondern über eine Kante neben der Jochpolfläche des Magnetjochs kippbar, welche auf der dem Spulenkörper zugewandten Seite angeordnet ist. Der Anker ist auf einem Vorsprung des Spulenflansches gelagert, der zu dem Spulenkörper gehört, auf dem die Wicklung aufgebracht ist.From EP 0 136 592 A1 an electromagnetic relay is known which comprises a magnetic yoke and a relay winding arranged on a coil body. In one embodiment, an armature can not be tilted over an edge in the region of one of the Jochpolflächen of the magnetic yoke, but tilted over an edge adjacent to the Jochpolfläche the yoke, which is arranged on the side facing the bobbin. The armature is mounted on a projection of the coil flange, which belongs to the bobbin on which the winding is applied.

Diese Aufgabe wird erfindungsgemäß gelöst durch ein Magnetsystem mit den Merkmalen des Anspruchs 1. Dieses Magnetsystem ist in prinzipiell bekannter Weise als Klappankersystem aufgebaut, wobei wesentliche Teile des Systems ein U-förmiges, im Querschnitt bevorzugt rechteckiges Magnetjoch, eine auf einem Spulenkörper angeordnete, auch als Erregerspule bezeichnete Relaiswicklung, sowie ein im angeklappten, d.h. geschlossenen Zustand auf beiden Jochpolen des Magnetjochs aufliegender Klappanker sind. Der Klappanker ist über den Jochpol desjenigen Schenkels des Magnetjochs kippbar, der nicht von der Relaiswicklung umgeben ist. An der Kante, über welche der Klappanker kippbar ist, ist zum Verschleißschutz ein Abstützelement vorgesehen, das einstückig mit dem Spulenkörper ausgebildet ist. Hierdurch ist mit minimalem fertigungstechnischem Mehraufwand ein sehr wirksamer Schutz der Jochpole, insbesondere des der Kippachse des Klappankers zugeordneten Jochpols, gegeben. Ein zusätzliches separates Ankerstützglied ist nicht erforderlich.This magnetic system is constructed in a manner known in principle as a hinged armature system, wherein essential parts of the system a U-shaped, in cross section preferably rectangular magnetic yoke, arranged on a bobbin, as well Exciting coil called relay winding, as well as in the folded, ie closed state on both yoke poles of the magnetic yoke resting hinged armature are. The hinged armature can be tilted over the Jochpol of that leg of the magnetic yoke, which is not surrounded by the relay winding. At the edge over which the hinged armature is tilted, a support element is provided for wear protection, which is formed integrally with the bobbin. As a result, a very effective protection of the yoke poles, in particular of the tilting axis of the hinged armature associated Jochpols given with minimal manufacturing overhead. An additional separate anchor support member is not required.

Eine Lagerfläche des einstückig mit dem Spulenkörper als Kombinationsteil ausgebildeten Abstützelementes für den Klappanker ist bevorzugt zumindest annähernd parallel zur benachbarten Polfläche des Magnetjochs angeordnet. Dabei befindet sich der Jochpol, um welchen der Klappanker kippbar ist, und die Lagerfläche jedoch erfindungsgemäß nicht exakt in derselben Ebene. Vielmehr ist die Lagerfläche, sofern der Klappanker auf beiden Polflächen der Schenkel des Magnetjochs aufliegt, vom Klappanker zumindest geringfügig weiter beabstandet als die der Kante zugeordnete Jochpolfläche. Dies bedeutet, dass beim Auslösen des Magnetsystems, d.h. beim Abheben des Klappankers, dieser zunächst um eine vom Schenkel des Magnetjochs gebildete Kante kippt. Nach kurzer Kippbewegung liegt der Klappanker auf der Lagerfläche des Stützkörpers auf und kippt in der weiteren Bewegung um eine zweite, vom Stützkörper gebildete Lagerfläche. Die Kippachse des Klappankers verlagert sich somit während der Kippbewegung von dem mit der Erregerspule umgebenen Schenkel des Magnetjochs weg. Zu Beginn der Kippbewegung ist somit der vom Klappanker gebildete Hebelarm zwischen dem die Spule tragenden Schenkel des Magnetjochs und der Kippachse kürzer als bei einem größeren Öffnungswinkel des Klappankers. Dagegen ist ein in der Verlängerung des Klappankers befindlicher zweiter Hebelarm, welcher über das Magnetjoch hinausragt und im Allgemeinen federkraftbelastet ist, zu Beginn der Kippbewegung im Vergleich zum weiteren Bewegungsablauf relativ lang. Durch diese Gestaltung mit einer zumindest geringfügigen Längenänderung der Hebelarme während des Kippens des Klappankers ist ein sehr leichtes Ansprechen des Magnetsystems ermöglicht. Zugleich ist durch die Verlagerung der Kippachse zum Abstützelement bereits kurz nach dem Öffnen des Klappankers ein effektiver Verschleißschutz gegeben.A bearing surface of the integrally formed with the bobbin as a combination part supporting element for the hinged armature is preferably arranged at least approximately parallel to the adjacent pole face of the magnetic yoke. In this case, there is the yoke, by which the hinged armature is tilted, and the bearing surface according to the invention but not exactly in the same plane. Rather, the bearing surface, if the hinged armature rests on both pole faces of the legs of the magnetic yoke, at least slightly further spaced from the hinged armature than the Jochpolfläche assigned to the edge. This means that upon release of the magnet system, ie when lifting the hinged armature, this first tilts around an edge formed by the leg of the magnetic yoke. To short tilting movement of the hinged armature rests on the bearing surface of the support body and tilts in the further movement of a second bearing surface formed by the support body. The tilting axis of the hinged armature thus displaced during the tilting movement of the surrounded with the excitation coil leg of the magnetic yoke away. Thus, at the beginning of the tilting movement, the lever arm formed by the hinged armature between the leg of the magnet yoke carrying the coil and the tilting axis is shorter than at a larger opening angle of the hinged armature. In contrast, located in the extension of the hinged armature second lever arm, which projects beyond the magnetic yoke and is generally spring-loaded, at the beginning of the tilting motion in comparison to the further movement relatively long. By this design with an at least slight change in length of the lever arms during tilting of the hinged armature is a very easy response of the magnet system allows. At the same time given by the displacement of the tilting axis to the support element shortly after the opening of the hinged armature effective wear protection.

Der den Spulenkörper und das Abstützelement umfassende Stützkörper weist vorzugsweise eine abgewinkelte Form, entweder eine L- oder ein U-Form auf, wobei die Relaiswicklung einen so genannten Spulenschenkel umgibt und das Abstützelement von einem im Wesentlichen parallel zum Klappanker ausgerichteten Längsschenkel gebildet ist. Ein zusätzlicher Schenkel im Fall der U-förmigen Ausbildung des Stützkörpers ist gegebenenfalls parallel zum das Abstützelement aufweisenden Längsschenkel diesem gegenüber angeordnet. Ein Permanentmagnet ist mit besonders geringem Abstand zum Klappanker positionierbar, indem der Längsschenkel sowie gegebenenfalls der diesem gegenüberliegende Schenkel einen entsprechenden Durchbruch im Bereich zwischen den Schenkeln des Magnetjochs aufweist bzw. aufweisen. Ebenso wie der Permanentmagnet durchdringen auch die Jochschenkel des Magnetjochs den Längsschenkel.The support body comprising the bobbin and the support element preferably has an angled shape, either an L- or a U-shape, wherein the relay winding surrounds a so-called coil leg and the support element is formed by a longitudinal leg aligned substantially parallel to the hinged armature. An additional leg in the case of the U-shaped design of the support body is optionally arranged parallel to the support member having longitudinal leg opposite this. A permanent magnet can be positioned with a particularly small distance from the hinged armature by the longitudinal leg and possibly the opposite leg has or have a corresponding breakthrough in the region between the legs of the magnetic yoke. Like the permanent magnet, the yoke legs of the magnetic yoke also penetrate the longitudinal leg.

Der Spulenkörper ist vorzugsweise mittels sogenannter Stützflanken einstückig mit dem Abstützelement verbunden. Hierbei umgreifen die Stützflanken den die erste Kippachse aufweisenden Jochschenkel derart, dass der Klappanker die Stützflanken nicht berührt, d.h. keine entsprechenden Reibungsflächen zwischen bewegten Teilen gegeben sind. Die Stützflanken sind bevorzugt in Erstreckungsrichtung des Jochschenkels im Vergleich zum anschließenden Bereich des Längsschenkels verdickt, wodurch der Längsschenkel des Stützkörpers im Bereich eines an dessen Abstützelement grenzenden Durchbruchs für den Jochschenkel mechanisch verstärkt ist.The bobbin is preferably integrally connected by means of so-called support flanks with the support element. In this case, the supporting flanks surround the yoke legs having the first tilting axis such that the hinged armature does not touch the supporting flanks, i. no corresponding friction surfaces between moving parts are given. The support flanks are preferably thickened in the direction of extension of the yoke leg compared to the adjoining region of the longitudinal limb, whereby the longitudinal limb of the support body is mechanically reinforced in the region of an opening for the yoke limb adjacent to its support element.

Zur flexiblen Halterung des Klappankers am Spulenkörper ist vorzugsweise ein mit dem Klappanker verbundener Halterahmen vorgesehen, welcher die Jochpolflächen umgibt und auf dem Längsschenkel des Spulenkörpers befestigt ist.For flexible mounting of the hinged armature on the bobbin, a holding frame connected to the hinged armature is preferably provided, which surrounds the Jochpolflächen and is fixed on the longitudinal leg of the bobbin.

Der Vorteil der Erfindung liegt insbesondere darin, dass bei einem Klappanker-Magnetsystem eine Abstützung des Klappankers an der Kippachse durch geeignete Ausbildung des Spulenkörpers ohne zusätzliches Bauteil realisiert ist.The advantage of the invention is in particular that in a hinged armature magnet system, a support of the hinged armature is realized on the tilting axis by suitable design of the bobbin without additional component.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand einer Zeichnung näher erläutert. Hierin zeigen:

FIG 1, FIG 2
jeweils in einer perspektivischen Darstellung wesentliche Komponenten eines Klappanker-Magnetsystems,
FIG 3, FIG 4
jeweils in einer perspektivischen Darstellung einen Stützkörper des Klappanker-Magnetsystems nach den FIG 1 und 2,
FIG 5
in einer vereinfachten geschnittenen perspektivischen Darstellung ein Schaltgerät mit dem Magnetsystem nach den FIG 1 und 2, und
FIG 6a, 6b
ausschnittsweise jeweils in einer schematischen Querschnittsdarstellung einen an einem Magnetjoch gelagerten Klappanker.
An embodiment of the invention will be explained in more detail with reference to a drawing. Herein show:
FIG. 1, FIG. 2
each in a perspective view essential components of a hinged armature magnet system,
3, FIG. 4
each in a perspective view of a support body of the hinged armature magnet system according to the Figures 1 and 2,
FIG. 5
in a simplified sectional perspective view of a switching device with the magnet system of Figures 1 and 2, and
FIGS. 6a, 6b
in detail, each in a schematic cross-sectional representation of a magnetic yoke mounted hinged armature.

Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding parts are provided in all figures with the same reference numerals.

Die FIG 1 und 2 zeigen den Aufbau eines Magnetsystem 1 für ein Klappankerrelais, welches ein Magnetjoch 2 mit einem ersten Jochschenkel 3 und einem zweiten Jochschenkel 4 sowie einen Klappanker 5 umfasst. Der erste Jochschenkel 3 durchdringt einen von einer Relaiswicklung oder Erregerspule 6 umgebenen Spulenschenkel 7 eines Stützkörpers 8, der als Kunststoffspritzgussteil gefertigt ist und dessen Form aus den FIG 3 und 4 näher ersichtlich ist. Zwischen den Jochschenkeln 3,4 befindet sich parallel zu diesen ausgerichtet ein Permanentmagnet 9, welcher den Klappanker 5 anzieht. Die magnetische Wirkung der Relaiswicklung 6 ist der magnetischen Wirkung des Permanentmagneten 9 entgegengerichtet. Beim Ansprechen des bevorzugt für einen FI-Schutzschalter verwendeten Magnetsystems 1 wird der Klappanker 5 durch die Kraft einer Zugfeder 10 abgehoben.1 and 2 show the structure of a magnet system 1 for a hinged armature relay, which comprises a magnetic yoke 2 with a first yoke leg 3 and a second yoke leg 4 and a hinged armature 5. The first yoke leg 3 penetrates a coil leg 7 of a support body 8 surrounded by a relay winding or exciting coil 6, which is manufactured as a plastic injection molded part and whose shape is shown in more detail in FIGS. 3 and 4. Between the yoke legs 3,4 is parallel to these aligned a permanent magnet 9, which attracts the hinged armature 5. The magnetic effect of the relay coil 6 is opposite to the magnetic effect of the permanent magnet 9. When addressing the magnet system preferably used for a RCCB 1, the hinged armature 5 is lifted by the force of a tension spring 10.

Im angeklappten, d.h. nicht ausgelösten Zustand, liegt der Klappanker 5 auf jeweils einer Jochpolfläche 11,12 des ersten Jochschenkels 3 und zweiten Jochschenkels 4 auf. An der Jochpolfläche 12 des zweiten Jochschenkels 4 ist, wie insbesondere aus FIG 5 hervorgeht, eine Kippkante 13 für den Klappanker 5 gebildet. Der Jochpolfläche 12 benachbart ist eine Lagerfläche 14 als Teil eines vom Stützkörper 8 gebildeten Abstützelementes 15 für den Klappanker 5. Das Abstützelement 15 ist einstückig angeformt an einen Längsschenkel 16, welcher zusammen mit dem Spulenschenkel 7 einen Spulenkörper 17 bildet, welcher die Erregerspule 6 trägt. Der das Abstützelement 15 und den Spulenkörper 17 umfassende Stützkörper 8 ist im dargestellten Ausführungsbeispiel als einstückiges Kunststoffspritzgussteil ausgebildet, an welches dem Längsschenkel 16 parallel gegenüberliegend ein Basisschenkel angeformt ist. Der Basisschenkel 18 ist mechanisch verbunden mit einer Grundplatte 19, die den Stützkörper 1 mittels mehrerer Schnappverbindungselemente 20 trägt und auch der Anlenkung der Zugfeder 10 dient. Abweichend von der dargestellten Ausführungsform kann der Spulenschenkel 7 auch direkt an einer Grundplatte befestigt sein, wobei in diesem Fall der Basisschenkel 18 entfallen kann. In jedem Fall bilden der aus dem Spulenschenkel 7 und dem Längsschenkel 16 aufgebaute Spulenkörper 17 und das Abstützelement 15 einen einheitlichen Stützkörper 8.In the folded, ie not triggered condition, the hinged armature 5 rests on in each case one Jochpolfläche 11,12 of the first yoke leg 3 and second yoke leg 4. At the Jochpolfläche 12 of the second yoke leg 4, as is apparent in particular from FIG 5, a tilting edge 13 for the hinged armature 5 is formed. The Jochpolfläche 12 adjacent is a bearing surface 14 as part of a support member formed by the support body 8 15 for the hinged armature 5. The support member 15 is integrally formed on a longitudinal leg 16, which forms a bobbin 17 together with the coil leg 7, which carries the excitation coil 6. The support member 15 and the bobbin 17 comprehensive support body 8 is formed in the illustrated embodiment as a one-piece plastic injection molded part, to which the longitudinal leg 16 parallel opposite a base leg is formed. The base leg 18 is mechanically connected to a base plate 19, the support body 1 by means of several Snap-in elements 20 carries and also the articulation of the tension spring 10 is used. Notwithstanding the illustrated embodiment, the coil leg 7 may also be attached directly to a base plate, in which case the base leg 18 may be omitted. In any case, the bobbin 17 constructed from the coil leg 7 and the longitudinal leg 16 and the support element 15 form a unitary support body 8.

Das eine Lagerstelle für den Klappanker 5 bildende Abstützelement 15 weist eine zweite Kippkante 21 auf, um welche der Klappanker 5 kippbar ist. Die zweite Kippkante 21 ist vom Klappanker 5 im angeklappten Zustand geringfügig beabstandet, so dass sich dieser beim Ansprechen des Magnetsystems 1 zunächst um die vom Magnetjoch 2 gebildete erste Kippkante 13 dreht. Bereits nach kurzer Kippbewegung kontaktiert der Klappanker 5 die Lagerfläche 14, so dass im weiteren Bewegungsablauf ausschließlich die zweite Kippkante 21 wirksam ist. Der Verschleiß an der Jochpolfläche 12 ist hierdurch minimiert.The one support point for the hinged armature 5 forming support member 15 has a second tilting edge 21, about which the hinged armature 5 is tilted. The second tilting edge 21 is slightly spaced from the hinged armature 5 in the folded state, so that it initially rotates when the magnet system 1 responds around the first tilting edge 13 formed by the magnetic yoke 2. Already after a short tilting movement of the hinged armature 5 contacted the bearing surface 14, so that in the further movement only the second tilting edge 21 is effective. The wear on the Jochpolfläche 12 is minimized thereby.

Der Klappanker 5 weist einen ersten Hebelarm 22,22' auf, welcher sich von einer Vorderkante 23, die bei angeklapptem Klappanker 5 im Bereich der Jochpolfläche 11 des ersten Jochschenkels 3 angeordnet ist, bis zur ersten Kippkante 13 bzw. bis zur zweiten Kippkante 21 erstreckt. Des Weiteren weist der Klappanker 5 in Verlängerung des ersten Hebelarms 22,22' einen zweiten Hebelarm 24,24' auf, welcher sich von der ersten Kippkante 13 bzw. von der zweiten Kippkante 21 bis zu einer Hinterkante 25 erstreckt, an der die Zugfeder 10 angreift. Während der Schwenkbewegung des Klappankers 5 beim Ansprechen des Magnetsystems 1 verlängert sich durch die Verlagerung der wirksamen Kippkante von der ersten Kippkante 13 zur zweiten Kippkante 21 der erste Hebelarm 22,22', während sich der zweite Hebelarm 24,24' entsprechend verkürzt. Durch die relativ ausgedehnte Länge des zweiten Hebelarms 24, an welchem die Zugfeder 10 angreift, zu Beginn des Auslösevorgangs ist ein sensibles Ansprechen des Magnetsystems 1 gegeben. Nach Beginn des Auslösevorgangs ist dagegen der Schutz der Jochpolfläche 12 des zweiten Jochschenkels 4 vor jeglichem Verschleiß insbesondere in Form von Abrieb oder Verformung von größerer Bedeutung. Dieser Verschleißschutz ist dadurch sichergestellt, dass der Klappanker 5 bereits kurz nach dem Ansprechen des Magnetsystems 1, d.h. bereits bei geringem Öffnungswinkel, von der ersten Kippkante 13 abhebt und ausschließlich die zweite Kippkante 21 belastet. Ein geringfügiger Verschleiß an der vom Stützkörper 8 gebildeten Kippkante 21 ist jedoch für die Auslöseeigenschaften des Magnetsystems 1 praktisch ohne Bedeutung, da der Klappanker 5 im angeklappten Zustand ausschließlich auf den Jochpolflächen 11,12, aufliegt. Dabei ist die Lagerfläche 14 des Längsschenkels 16 zumindest geringfügig, etwa um einige Hundertstel Millimeter, von den Jochpolflächen 11,12 beabstandet.The hinged armature 5 has a first lever arm 22, 22 'which extends from a front edge 23, which is arranged in the region of the yoke pole surface 11 of the first yoke leg 3 when the hinged armature 5 is folded, to the first tilting edge 13 or to the second tilting edge 21 , Furthermore, the hinged armature 5 in extension of the first lever arm 22, 22 'has a second lever arm 24, 24', which extends from the first tilting edge 13 or from the second tilting edge 21 to a trailing edge 25 on which the tension spring 10 attacks. During the pivotal movement of the hinged armature 5 in response of the magnet system 1 is extended by the displacement of the effective tilting edge of the first tilting edge 13 to the second tilting edge 21 of the first lever arm 22,22 ', while the second lever arm 24,24' correspondingly shortened. Due to the relatively extended length of the second lever arm 24, on which the tension spring 10 engages, at the beginning of the triggering operation is given a sensitive response of the magnet system 1. On the other hand, after the start of the tripping operation, the protection of the yoke pole face 12 of the second yoke limb 4 against any wear, in particular in the form of abrasion or deformation, is of greater importance. This wear protection is ensured by the fact that the hinged armature 5 already lifts off from the first tilting edge 13 shortly after the magnetic system 1 responds, ie already at a low opening angle, and only loads the second tilting edge 21. However, a slight wear on the tilting edge 21 formed by the support body 8 is practically irrelevant to the release characteristics of the magnet system 1, since the hinged armature 5 rests exclusively on the yoke pole surfaces 11, 12 in the folded-on state. In this case, the bearing surface 14 of the longitudinal limb 16 is at least slightly spaced, for example by a few hundredths of a millimeter, from the yoke pole surfaces 11, 12.

Das Abstützelement 15 ist mit dem Spulenkörper 17 mittels zweier Stützflanken 26 verbunden, welche eine Öffnung 27 für den zweiten Jochschenkel 4 freigeben. Des Weiteren ist im Längsschenkel 16 ein Durchbruch 28 für den Permanentmagneten 9 vorgesehen. Der Klappanker 5 ist mit dem Längsschenkel 16 des Stützkörpers 8 mittels eines Halterahmens 29 verbunden, welcher einerseits im Bereich der Kippkanten 13,21 an den Klappanker 5 anschließt und andererseits, die Stützflanken 26 und die Jochpolflächen 11,12 umgreifend, flächig auf dem Längsschenkel 16 aufliegt. Durch die Anlenkung des Klappankers 5 am Längsschenkel 16 mittels des Halterahmens 29 ist der Klappanker 5 höchstens geringfügig längsbeweglich, d.h. auf den Kippkanten 13,21 verschiebbar. Weiter ist hierdurch sichergestellt, dass nach dem Ansprechen des Klappankers 5, welcher einen ein Gehäuse 30 durchdringenden Schaltstößel 31 betätigt, dieser beim Zurückklappen an die Jochpolflächen 11,12 stets in gleicher Position an diesen zum Anliegen kommt, selbst wenn während der Klappbewegung eine geringe Verschiebung des Klappankers 5 auf den Kippkanten 13,21 auftritt.The support element 15 is connected to the bobbin 17 by means of two supporting flanks 26, which release an opening 27 for the second yoke leg 4. Furthermore, an opening 28 for the permanent magnet 9 is provided in the longitudinal leg 16. The hinged armature 5 is connected to the longitudinal leg 16 of the support body 8 by means of a holding frame 29, which connects on the one hand in the region of the tilting edges 13,21 to the hinged armature 5 and on the other hand, the support flanks 26 and the Jochpolflächen 11,12 embracing, flat on the longitudinal leg 16th rests. By the articulation of the hinged armature 5 on the longitudinal leg 16 by means of the holding frame 29 of the hinged armature 5 is at most slightly longitudinally movable, ie slidable on the tilting edges 13,21. Further, this ensures that after the response of the hinged armature 5, which actuates a housing 30 penetrating switch plunger 31, this always comes in abutment against the Jochpolflächen 11,12 in the same position to these concerns, even if during the folding movement a slight shift of the hinged armature 5 on the tilting edges 13,21 occurs.

Die FIG 6a und 6b zeigen jeweils in einer schematischen Querschnittsdarstellung ausschnittsweise die Lagerung des Klappankers 5 im Schaltgerät nach FIG 5. Hierbei befindet sich der Klappanker 5 in abgehobener, d.h. offener Position (FIG 6a) beziehungsweise in geschlossener, d.h. auf den Jochpolflächen 11,12 aufliegender Position (FIG 6b). Wie aus den Darstellungen hervorgeht, ist die Lagerfläche 14 bei geschlossenem Klappanker 5 nur geringfügig von diesem beabstandet, während der Lagerschenkel 16 im Bereich zwischen den Jochschenkeln 3,4 etwas weiter vom Klappanker 5 beabstandet ist. Ein Aufliegen des Klappankers 5 auf dem Lagerschenkel 16 in diesem Bereich ist somit ausgeschlossen. Zugleich ist sichergestellt, dass beim Öffnen des Klappankers 5 rasch die erste Kante 13 ent- und die zweite Kante 21 belastet wird.The FIGS 6a and 6b show in each case in a schematic cross-sectional view of a detail of the storage of the hinged armature 5 in the switching device according to FIG 5. Here, the hinged armature 5 is in lifted, i. open position (FIG. 6a) or in closed, i. on the Jochpolflächen 11,12 resting position (FIG 6b). As can be seen from the illustrations, the bearing surface 14 is only slightly spaced therefrom with the hinged armature 5 closed, while the bearing leg 16 is spaced slightly further away from the hinged armature 5 in the region between the yoke legs 3, 4. A resting of the hinged armature 5 on the bearing leg 16 in this area is thus excluded. At the same time it is ensured that when opening the hinged armature 5 quickly the first edge 13 ent and the second edge 21 is loaded.

Das Magnetsystem 1 zeichnet sich insgesamt insbesondere durch eine geringe Teileanzahl sowie einen geringen Material- und Montageaufwand aus, wobei eine weitgehende Unabhängigkeit der Auslöseeigenschaften von der Schaltspielzahl erreicht ist.Overall, the magnet system 1 is characterized in particular by a low number of parts as well as a low material and assembly outlay, whereby a high degree of independence of the release characteristics is achieved by the switching cycle number.

Claims (6)

  1. Magnet system for a hinged-armature relay, having a magnet yoke (2), a relay winding (6) which is arranged on a coil former (17), a hinged armature (5) which can be tilted over an edge (13) in the region of one of the yoke pole faces (12) of the magnet yoke (2), and a supporting element (15) for supporting the hinged armature (5) at the edge (13), which supporting element is integrally formed with the coil former (17) as supporting body (8),
    characterized in that, in the state when the hinged armature (5) is resting on the yoke pole faces (11, 12), a bearing face (14) of the supporting body (8) which supports the hinged armature (5) during its tilting movement is at an at least slightly greater distance from the said hinged armature than the yoke pole face (12) which is associated with the edge (13).
  2. Magnet system according to Claim 1,
    characterized in that the supporting body (8) is an injection-moulded part.
  3. Magnet system according to either of Claims 1 and 2,
    characterized in that the supporting body (8) has an angular form with a coil limb (7) which is surrounded by the relay winding (6) and a longitudinal limb (16) which is oriented substantially parallel to the hinged armature (5) and on which the supporting element (15) is integrally formed.
  4. Magnet system according to Claim 3,
    characterized in that the supporting body (8) has a base limb (18) which adjoins the coil limb and is situated opposite and parallel to the longitudinal limb (16).
  5. Magnet system according to Claim 3 or 4,
    characterized in that the longitudinal limb (16) has an aperture (28) for a permanent magnet (9) which is arranged between the yoke limbs (3, 4) of the magnet yoke (2).
  6. Magnet system according to one of Claims 3 to 5,
    characterized in that the hinged armature (5) is connected, such that it can move, to the longitudinal limb (16) by means of a holding frame (29) which surrounds the yoke pole faces (11, 12) on the said longitudinal limb.
EP20030008656 2003-04-15 2003-04-15 Magnet system for a relay with a rocker armature Expired - Fee Related EP1469500B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50307420T DE50307420D1 (en) 2003-04-15 2003-04-15 Magnetic system for a hinged armature relay
EP20030008656 EP1469500B1 (en) 2003-04-15 2003-04-15 Magnet system for a relay with a rocker armature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030008656 EP1469500B1 (en) 2003-04-15 2003-04-15 Magnet system for a relay with a rocker armature

Publications (2)

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EP1469500A1 EP1469500A1 (en) 2004-10-20
EP1469500B1 true EP1469500B1 (en) 2007-06-06

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DE (1) DE50307420D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2877137B1 (en) * 2004-10-21 2006-12-22 Schneider Electric Ind Sas ELECTROMAGNETIC TRIGGER AND ELECTRIC PROTECTION APPARATUS HAVING THE SAME
CN108074785A (en) * 2017-12-12 2018-05-25 上海良信电器股份有限公司 A kind of electromagnetic release
CN113611576A (en) * 2021-09-08 2021-11-05 哈尔滨工业大学 Single permanent magnet composite armature electromagnetic mechanism

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2029607C3 (en) * 1970-06-16 1974-07-18 Felten & Guilleaume Schaltanlagen Gmbh, 4150 Krefeld Plastic housing for relays
US3833869A (en) * 1973-11-09 1974-09-03 Amp Inc Electromechanical relay
DE3008783C2 (en) * 1980-03-07 1984-04-19 Standard Elektrik Lorenz Ag, 7000 Stuttgart Relay with an angle armature
DE8325986U1 (en) * 1983-09-09 1983-12-29 Siemens AG, 1000 Berlin und 8000 München Electromagnetic relay
DE3838444A1 (en) * 1988-11-12 1990-05-17 Felten & Guilleaume Energie MAGNETIC SYSTEM FOR QUICK SHUTDOWN
DE4110660C2 (en) * 1991-04-02 1996-05-02 Felten & Guilleaume Energie Magnet system for a fast-switching hinged armature relay
AT410724B (en) * 1994-10-10 2003-07-25 Tyco Electronics Austria Gmbh RELAY
DE20007905U1 (en) * 1999-05-07 2000-07-13 Xiamen Hongfa Electroacoustic Electromagnetic relay

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DE50307420D1 (en) 2007-07-19

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