EP1469500A1 - 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
EP1469500A1
EP1469500A1 EP03008656A EP03008656A EP1469500A1 EP 1469500 A1 EP1469500 A1 EP 1469500A1 EP 03008656 A EP03008656 A EP 03008656A EP 03008656 A EP03008656 A EP 03008656A EP 1469500 A1 EP1469500 A1 EP 1469500A1
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EP
European Patent Office
Prior art keywords
yoke
magnet system
leg
anchor
hinged
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03008656A
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German (de)
French (fr)
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EP1469500B1 (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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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP20030008656 priority Critical patent/EP1469500B1/en
Priority to DE50307420T priority patent/DE50307420D1/en
Publication of EP1469500A1 publication Critical patent/EP1469500A1/en
Application granted granted Critical
Publication of EP1469500B1 publication Critical patent/EP1469500B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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 folding armature relay with a U-shaped magnetic yoke, one on a bobbin arranged relay winding, which is one of the U-legs of the magnetic yoke, one on the other U-leg arranged bearing, which has an edge over which is a hinged anchor, and a support element for Support of the hinged anchor at the bearing point.
  • a thing Magnet system is known for example from DE 41 10 660 C2.
  • Folding anchor magnet systems are often used in residual current (FI) or Residual current (DI) circuit breakers used.
  • the pole face of the magnetic yoke, over which the hinged anchor can be tilted is, in particular due to the low resilience soft magnetic material exposed to particular wear.
  • By opening and closing the hinged anchor resulting abrasion or throwing on the tipping edge changes the air gap between the hinged anchor and the magnetic yoke, whereby the response behavior of the magnet system in is not influenced as desired.
  • the wear resistance of a hinged anchor magnet system increase, for example, is the use of galvanic Coatings of magnetic parts. In any case through the wear protection measures of the constructive and manufacturing technology Effort significantly increased.
  • the invention has for its object a magnet system to specify for a hinged armature relay, which for constructive simple construction a particularly low dependency of the tripping behavior of the number of operations.
  • this object is achieved by a magnet system with the features of claim 1.
  • This magnet system is constructed in a generally known manner as a hinged anchor system, essential parts of the system are U-shaped, in cross section preferably rectangular magnetic yoke, one on a coil former arranged, also referred to as excitation coil Relay winding, as well as one in the folded, i.e. closed Condition on both yoke poles of the magnetic yoke Are anchors.
  • the hinged anchor is over the yoke pole of the leg of the magnetic yoke that is not tiltable is surrounded by the relay winding. On the edge, over which the hinged anchor can be tilted, is a support element for wear protection intended.
  • This support element is according to the invention in one piece, preferably as a plastic injection molded part, formed with the bobbin. This is with minimal manufacturing additional effort a very effective Protection of the yoke poles, in particular that of the tilting axis of the Folded anchor assigned yoke pole. An additional separate anchor support member is not required.
  • a bearing surface of the one piece with the bobbin as a combination part trained support element for the hinged anchor is preferably at least approximately parallel to the neighboring one Pole surface of the magnetic yoke arranged. Is located the yoke pole around which the hinged anchor can be tilted, and the storage area, however, preferably not exactly in the same plane. Rather, the storage area provided the hinged anchor is on rests on both pole faces of the legs of the magnetic yoke, in this embodiment of the hinged anchor at least slightly spaced. This means that when the magnet system is triggered, i.e. when lifting the hinged anchor, this first around an edge formed by the leg of the magnetic yoke tilts.
  • the hinged anchor lies on the bearing surface of the support body and tips over in the further movement a second bearing surface formed by the support body.
  • the tilt axis the hinged anchor thus moves during the tilting movement from the arm of the arm surrounded by the excitation coil Magnet yoke away.
  • At the beginning of the tilting movement is therefore from Folding arm formed lever arm between the one carrying the coil Leg of the magnetic yoke and the tilt axis shorter than in a larger opening angle of the hinged anchor.
  • a second in the extension of the hinged anchor Lever arm that protrudes beyond the magnetic yoke and in general is spring loaded at the beginning of the tilting movement relatively long compared to the further movement.
  • the support body comprising the coil body and the support element preferably has an angled shape, either an L or a U shape, with the relay winding one so-called coil leg and surrounds the support element of one aligned essentially parallel to the hinged anchor Longitudinal leg is formed.
  • An additional leg in the case the U-shaped design of the support body is optionally parallel to the longitudinal leg having the support element arranged opposite this.
  • a permanent magnet is special short distance to the hinged anchor can be positioned by the longitudinal leg and, if applicable, the opposite one Thigh a corresponding breakthrough in the area has or have between the legs of the magnetic yoke. Just like the permanent magnet, they also penetrate Yoke leg of the magnetic yoke the longitudinal leg.
  • the coil former is preferably by means of so-called support flanks integrally connected to the support element.
  • support flanks integrally connected to the support element.
  • the support flanks are preferred in the direction of extension of the yoke leg in comparison thickened to the adjacent area of the longitudinal leg, whereby the longitudinal leg of the support body in the area a breakthrough on the support element for the Yoke leg is mechanically reinforced.
  • a holding frame connected to the hinged anchor provided which surrounds the yoke pole surfaces and on the Longitudinal leg of the coil body is attached.
  • the advantage of the invention is in particular that a hinged anchor magnet system supports the hinged anchor on the tilt axis by suitable formation of the coil body is realized without an additional component.
  • FIG 1 and 2 show the structure of a magnet system 1 for a folding armature relay, which a magnetic yoke 2 with a first Yoke leg 3 and a second yoke leg 4 and one Folding anchor 5 includes.
  • the first yoke leg 3 penetrates one surrounded by a relay winding or excitation coil 6
  • Coil leg 7 of a support body 8 which is a plastic injection molded part is made and its shape from the FIG 3 and 4 can be seen in more detail.
  • the magnetic Effect of the relay winding 6 is the magnetic effect of the Permanent magnets 9 opposed.
  • the Folding anchor 5 On the yoke pole surface 12 of the second yoke leg 4 is, in particular 5 shows a tilting edge 13 for the hinged anchor 5 formed.
  • the yoke pole surface 12 is adjacent Bearing surface 14 as part of a support body 8 formed Support element 15 for the hinged anchor 5.
  • the support element 15 is integrally formed on a longitudinal leg 16, which a coil former 17 together with the coil leg 7 forms which carries the excitation coil 6.
  • the the support element 15 and the bobbin 17 is supporting body 8 in the illustrated embodiment as a one-piece plastic injection molded part trained, on which the longitudinal leg 16 a base leg is formed in parallel opposite.
  • the base leg 18 is mechanically connected to a Base plate 19, the support body 1 by means of several Snap fasteners 20 carries and also the articulation the tension spring 10 is used.
  • Deviating from the illustrated embodiment can the coil leg 7 also directly on one Base plate to be attached, in which case the base leg 18 can be omitted. In any case, form the from the Coil leg 7 and the longitudinal leg 16 constructed bobbin 17 and the support element 15 a uniform Support body 8.
  • the support element forming a bearing for the hinged anchor 5 15 has a second tilting edge 21 around which the Folding anchor 5 is tiltable.
  • the second tipping edge 21 is from Folding anchor 5 spaced slightly apart when folded, so that this first when the magnet system 1 responds around the first tilting edge 13 formed by the magnetic yoke 2 rotates.
  • the bearing surface 14 already after a short tilting movement the contacts Folding anchor 5, the bearing surface 14, so that in the further course of movement only the second tilting edge 21 is effective is. This minimizes wear on the yoke pole surface 12.
  • the hinged anchor 5 has a first lever arm 22, 22 ', which from a front edge 23, which when folded Folding anchor 5 in the area of the yoke pole face 11 of the first yoke leg 3 is arranged up to the first tilting edge 13 or extends to the second tipping edge 21. Furthermore points the folding anchor 5 in the extension of the first lever arm 22, 22 ' a second lever arm 24, 24 ', which is different from the first Tilting edge 13 or from the second tilting edge 21 to one Trailing edge 25 extends on which the tension spring 10 engages.
  • the support element 15 is connected to the coil former 17 by means of two supporting flanks 26 connected, which an opening 27 for release the second yoke leg 4. Furthermore, in Longitudinal leg 16 an opening 28 for the permanent magnet 9 provided.
  • the hinged anchor 5 is with the longitudinal leg 16 the support body 8 connected by means of a holding frame 29, which on the one hand in the area of the tilting edges 13, 21 to the Folding anchor 5 connects and, on the other hand, the support flanks 26 and encompassing the yoke pole faces 11, 12, flat on the Longitudinal leg 16 rests. Through the articulation of the hinged anchor 5 on the longitudinal leg 16 by means of the holding frame 29 the hinged anchor 5 is at most slightly longitudinally movable, i.e.
  • FIG. 6a and 6b each show a schematic cross-sectional illustration sections of the storage of the hinged anchor 5 in the switching device according to FIG 5.
  • the Folding anchor 5 in the raised, i.e. open position (FIG. 6a) or in a closed, i.e. on the yoke pole surfaces 11,12 overlying position (FIG 6b).
  • the bearing surface 14 is closed Folding anchor 5 spaced only slightly from this while the bearing leg 16 in the area between the yoke legs 3.4 is spaced somewhat further from the hinged anchor 5.
  • An overlay of the hinged anchor 5 on the bearing leg 16 in this Area is therefore excluded. It also ensures that when opening the hinged anchor 5 quickly the first Edge 13 and the second edge 21 is loaded.
  • the magnet system 1 is characterized in particular by a small number of parts and a low material and Assembly effort, with a high degree of independence of the Tripping properties of the number of operations is reached.

Abstract

The system has a magnetic yoke, a relay winding (6) mounted on the coil body, a hinged armature (5) and an element for supporting the armature on the edge of the yoke near a pole surface. The supporting element is formed in one piece with the coil body as a supporting body (8). The supporting body is an injection molded part.

Description

Die Erfindung betrifft ein Magnetsystem für ein Klappankerrelais mit einem U-förmigen Magnetjoch, einer auf einem Spulenkörper angeordneten Relaiswicklung, welche einen der U-Schenkel des Magnetjochs umgibt, einer am anderen U-Schenkel angeordneten Lagerstelle, welche eine Kante aufweist, über die ein Klappanker kippbar ist, und einem Abstützelement zur Abstützung des Klappankers an der Lagerstelle. Ein derartiges Magnetsystem ist beispielsweise aus der DE 41 10 660 C2 bekannt.The invention relates to a magnet system for a folding armature relay with a U-shaped magnetic yoke, one on a bobbin arranged relay winding, which is one of the U-legs of the magnetic yoke, one on the other U-leg arranged bearing, which has an edge over which is a hinged anchor, and a support element for Support of the hinged anchor at the bearing point. Such a thing Magnet system is known for example from DE 41 10 660 C2.

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 anchor magnet systems are often used in residual current (FI) or Residual current (DI) circuit breakers used. The pole face of the magnetic yoke, over which the hinged anchor can be tilted is, in particular due to the low resilience soft magnetic material exposed to particular wear. By opening and closing the hinged anchor resulting abrasion or throwing on the tipping edge changes the air gap between the hinged anchor and the magnetic yoke, whereby the response behavior of the magnet system in is not influenced as desired. Because of the usual high sensitivity of folding anchor magnet systems are even minor wear or contamination effects relevant. To counter such effects, for example the magnet system known from DE 41 10 660 C2 Yoke pole on which the hinged armature is tiltably mounted additional anchor support member. One more way, the wear resistance of a hinged anchor magnet system increase, for example, is the use of galvanic Coatings of magnetic parts. In any case through the wear protection measures of the constructive and manufacturing technology Effort significantly increased.

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 a magnet system to specify for a hinged armature relay, which for constructive simple construction a particularly low dependency of the tripping behavior of the number of operations.

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. Dieses Abstützelement ist erfindungsgemäß einstückig, bevorzugt als Kunststoffspritzgussteil, mit dem Spulenkörper ausgebildet. 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.According to the invention, this object is achieved by a magnet system with the features of claim 1. This magnet system is constructed in a generally known manner as a hinged anchor system, essential parts of the system are U-shaped, in cross section preferably rectangular magnetic yoke, one on a coil former arranged, also referred to as excitation coil Relay winding, as well as one in the folded, i.e. closed Condition on both yoke poles of the magnetic yoke Are anchors. The hinged anchor is over the yoke pole of the leg of the magnetic yoke that is not tiltable is surrounded by the relay winding. On the edge, over which the hinged anchor can be tilted, is a support element for wear protection intended. This support element is according to the invention in one piece, preferably as a plastic injection molded part, formed with the bobbin. This is with minimal manufacturing additional effort a very effective Protection of the yoke poles, in particular that of the tilting axis of the Folded anchor assigned yoke pole. 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 bevorzugt nicht exakt in derselben Ebene. Vielmehr ist die Lagerfläche, sofern der Klappanker auf beiden Polflächen der Schenkel des Magnetjochs aufliegt, in dieser Ausführungsform vom Klappanker zumindest geringfügig beabstandet. 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 one piece with the bobbin as a combination part trained support element for the hinged anchor is preferably at least approximately parallel to the neighboring one Pole surface of the magnetic yoke arranged. Is located the yoke pole around which the hinged anchor can be tilted, and the storage area, however, preferably not exactly in the same plane. Rather, the storage area provided the hinged anchor is on rests on both pole faces of the legs of the magnetic yoke, in this embodiment of the hinged anchor at least slightly spaced. This means that when the magnet system is triggered, i.e. when lifting the hinged anchor, this first around an edge formed by the leg of the magnetic yoke tilts. To short tilting movement, the hinged anchor lies on the bearing surface of the support body and tips over in the further movement a second bearing surface formed by the support body. The tilt axis the hinged anchor thus moves during the tilting movement from the arm of the arm surrounded by the excitation coil Magnet yoke away. At the beginning of the tilting movement is therefore from Folding arm formed lever arm between the one carrying the coil Leg of the magnetic yoke and the tilt axis shorter than in a larger opening angle of the hinged anchor. Against it a second in the extension of the hinged anchor Lever arm that protrudes beyond the magnetic yoke and in general is spring loaded at the beginning of the tilting movement relatively long compared to the further movement. By this design with at least a slight change in length the lever arms is during the tilting of the folding anchor enables a very easy response of the magnet system. At the same time is due to the shift of the tilt axis to the support element effective shortly after opening the hinged anchor Wear protection given.

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 coil body and the support element preferably has an angled shape, either an L or a U shape, with the relay winding one so-called coil leg and surrounds the support element of one aligned essentially parallel to the hinged anchor Longitudinal leg is formed. An additional leg in the case the U-shaped design of the support body is optionally parallel to the longitudinal leg having the support element arranged opposite this. A permanent magnet is special short distance to the hinged anchor can be positioned by the longitudinal leg and, if applicable, the opposite one Thigh a corresponding breakthrough in the area has or have between the legs of the magnetic yoke. Just like the permanent magnet, they also penetrate Yoke leg of the magnetic yoke 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 coil former is preferably by means of so-called support flanks integrally connected to the support element. in this connection encompass the support flanks that have the first tilt axis Yoke legs in such a way that the hinged anchors support the flanks not touched, i.e. no corresponding friction surfaces between moving parts are given. The support flanks are preferred in the direction of extension of the yoke leg in comparison thickened to the adjacent area of the longitudinal leg, whereby the longitudinal leg of the support body in the area a breakthrough on the support element for the Yoke leg is mechanically reinforced.

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 coil former preferably a holding frame connected to the hinged anchor provided which surrounds the yoke pole surfaces and on the Longitudinal leg of the coil body is attached.

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 a hinged anchor magnet system supports the hinged anchor on the tilt axis by suitable formation of the coil body is realized without an 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 is explained below with reference to a drawing. Show here:
FIG 1, FIG 2
essential components of a hinged armature magnet system, each in a perspective view,
3, 4
each in a perspective view of a support body of the folding armature magnet system according to FIGS 1 and 2,
FIG 5
in a simplified sectional perspective view of a switching device with the magnet system according to FIGS 1 and 2, and
6a, 6b
in sections, each in a schematic cross-sectional representation of a hinged armature mounted on a magnetic yoke.

Einander entsprechende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding parts are in all figures with the provided 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 folding armature relay, which a magnetic yoke 2 with a first Yoke leg 3 and a second yoke leg 4 and one Folding anchor 5 includes. The first yoke leg 3 penetrates one surrounded by a relay winding or excitation coil 6 Coil leg 7 of a support body 8, which is a plastic injection molded part is made and its shape from the FIG 3 and 4 can be seen in more detail. Between the yoke legs 3.4 there is a permanent magnet aligned parallel to these 9, which attracts the hinged anchor 5. The magnetic Effect of the relay winding 6 is the magnetic effect of the Permanent magnets 9 opposed. When addressing the preferably used for a residual current circuit breaker 1 is the folding anchor 5 by the force of a tension spring 10 lifted off.

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, i.e. not triggered state, is the Folding anchor 5 on a respective yoke pole surface 11, 12 of the first Yoke leg 3 and second yoke leg 4. On the yoke pole surface 12 of the second yoke leg 4 is, in particular 5 shows a tilting edge 13 for the hinged anchor 5 formed. The yoke pole surface 12 is adjacent Bearing surface 14 as part of a support body 8 formed Support element 15 for the hinged anchor 5. The support element 15 is integrally formed on a longitudinal leg 16, which a coil former 17 together with the coil leg 7 forms which carries the excitation coil 6. The the support element 15 and the bobbin 17 is supporting body 8 in the illustrated embodiment as a one-piece plastic injection molded part trained, on which the longitudinal leg 16 a base leg is formed in parallel opposite. The base leg 18 is mechanically connected to a Base plate 19, the support body 1 by means of several Snap fasteners 20 carries and also the articulation the tension spring 10 is used. Deviating from the illustrated embodiment can the coil leg 7 also directly on one Base plate to be attached, in which case the base leg 18 can be omitted. In any case, form the from the Coil leg 7 and the longitudinal leg 16 constructed bobbin 17 and the support element 15 a uniform 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 support element forming a bearing for the hinged anchor 5 15 has a second tilting edge 21 around which the Folding anchor 5 is tiltable. The second tipping edge 21 is from Folding anchor 5 spaced slightly apart when folded, so that this first when the magnet system 1 responds around the first tilting edge 13 formed by the magnetic yoke 2 rotates. Already after a short tilting movement the contacts Folding anchor 5, the bearing surface 14, so that in the further course of movement only the second tilting edge 21 is effective is. This minimizes wear on the yoke pole surface 12.

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 anchor 5 has a first lever arm 22, 22 ', which from a front edge 23, which when folded Folding anchor 5 in the area of the yoke pole face 11 of the first yoke leg 3 is arranged up to the first tilting edge 13 or extends to the second tipping edge 21. Furthermore points the folding anchor 5 in the extension of the first lever arm 22, 22 ' a second lever arm 24, 24 ', which is different from the first Tilting edge 13 or from the second tilting edge 21 to one Trailing edge 25 extends on which the tension spring 10 engages. During the pivoting movement of the hinged anchor 5 at Response of the magnet system 1 is prolonged by the shift the effective tipping edge from the first tipping edge 13 to the second tilting edge 21, the first lever arm 22, 22 ', while the second lever arm 24, 24 'is shortened accordingly. By the relatively extended length of the second lever arm 24 which the tension spring 10 engages at the beginning of the triggering process there is a sensitive response of the magnet system 1. However, after the triggering process has started, protection is given the yoke pole surface 12 of the second yoke leg 4 before any Wear especially in the form of abrasion or deformation of greater importance. This is wear protection ensured that the hinged anchor 5 shortly after the response of the magnet system 1, i.e. even with little Opening angle, stands out from the first tilting edge 13 and exclusively the second tilting edge 21 is loaded. A minor one Wear on the tilting edge formed by the support body 8 However, 21 is for the triggering properties of the magnet system 1 practically irrelevant, because the hinged anchor 5 in the folded Condition rests exclusively on the yoke pole faces 11, 12. The bearing surface 14 of the longitudinal leg 16 is at least slightly, around a few hundredths of a millimeter, spaced from the yoke pole faces 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 coil former 17 by means of two supporting flanks 26 connected, which an opening 27 for release the second yoke leg 4. Furthermore, in Longitudinal leg 16 an opening 28 for the permanent magnet 9 provided. The hinged anchor 5 is with the longitudinal leg 16 the support body 8 connected by means of a holding frame 29, which on the one hand in the area of the tilting edges 13, 21 to the Folding anchor 5 connects and, on the other hand, the support flanks 26 and encompassing the yoke pole faces 11, 12, flat on the Longitudinal leg 16 rests. Through the articulation of the hinged anchor 5 on the longitudinal leg 16 by means of the holding frame 29 the hinged anchor 5 is at most slightly longitudinally movable, i.e. slidable on the tipping edges 13,21. This is further ensures that after the response of the hinged anchor 5, which has a switching plunger 31 penetrating a housing 30 actuated, this when folding back to the yoke pole faces 11, 12 always in the same position against them comes, even if a slight during the folding movement Displacement of the hinged anchor 5 occurs on the tilting edges 13, 21.

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.6a and 6b each show a schematic cross-sectional illustration sections of the storage of the hinged anchor 5 in the switching device according to FIG 5. Here is the Folding anchor 5 in the raised, i.e. open position (FIG. 6a) or in a closed, i.e. on the yoke pole surfaces 11,12 overlying position (FIG 6b). As from the representations emerges, the bearing surface 14 is closed Folding anchor 5 spaced only slightly from this while the bearing leg 16 in the area between the yoke legs 3.4 is spaced somewhat further from the hinged anchor 5. An overlay of the hinged anchor 5 on the bearing leg 16 in this Area is therefore excluded. It also ensures that when opening the hinged anchor 5 quickly the first Edge 13 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.The magnet system 1 is characterized in particular by a small number of parts and a low material and Assembly effort, with a high degree of independence of the Tripping properties of the number of operations is reached.

Claims (7)

Magnetsystem für ein Klappankerrelais, mit einem Magnetjoch (2), einer auf einem Spulenkörper (17) angeordneten Relaiswicklung (6), einem über eine Kante (13,21) im Bereich einer der Jochpolflächen (11,12) des Magnetjochs (2) kippbaren Klappanker (5) und einem Abstützelement (15) zur Abstützung des Klappankers (5) an der Kante (13,21),
dadurch gekennzeichnet, dass das Abstützelement (15) einstückig mit dem Spulenkörper (17) als Stützkörper (8) ausgebildet ist.Magnet system for a folding armature relay, with a magnetic yoke (2), a relay winding (6) arranged on a coil former (17), one that can be tilted over an edge (13, 21) in the area of one of the yoke pole faces (11, 12) of the magnetic yoke (2) Folding anchor (5) and a support element (15) for supporting the folding anchor (5) on the edge (13, 21),
characterized in that the support element (15) is formed in one piece with the coil body (17) as a support body (8). Magnetsystem nach Anspruch 1,
dadurch gekennzeichnet, dass der Stützkörper (8) ein Spritzgussteil ist.Magnet system according to claim 1,
characterized in that the support body (8) is an injection molded part. Magnetsystem nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass eine den Klappanker (5) während dessen Kippbewegung abstützende Lagerfläche (14) des Stützkörpers (8) im an den Jochpolflächen (11,12) anliegenden Zustand des Klappankers (5) von diesem zumindest geringfügig weiter beabstandet ist als die der Kante (13,21) zugeordnete Jochpolfläche (12).Magnet system according to claim 1 or 2,
characterized in that a bearing surface (14) of the supporting body (8) supporting the hinged anchor (5) during its tilting movement is at least slightly further apart from the hinged anchor (5) than the edge when the hinged anchor (5) is in contact with the yoke pole surfaces (11, 12) (13,21) assigned yoke pole surface (12). Magnetsystem nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass der Stützkörper (8) eine abgewinkelte Form mit einem von der Relaiswicklung (6) umgebenen Spulenschenkel (7) und einem im Wesentlichen parallel zum Klappanker (5) ausgerichteten Längsschenkel (16) aufweist, an welchen das Abstützelement (15) angeformt ist.Magnet system according to one of claims 1 to 3,
characterized in that the support body (8) has an angled shape with a coil leg (7) surrounded by the relay winding (6) and a longitudinal leg (16) oriented essentially parallel to the hinged armature (5), on which the support element (15) is integrally formed is. Magnetsystem nach Anspruch 4,
dadurch gekennzeichnet, dass der Stützkörper (8) einen an den Spulenschenkel anschließenden, parallel zum Längsschenkel (16) diesem gegenüberliegenden Basisschenkel (18) aufweist. Magnet system according to claim 4,
characterized in that the support body (8) has a base leg (18) which adjoins the coil leg and is parallel to the longitudinal leg (16) and opposite it. Magnetsystem nach Anspruch 4 oder 5,
dadurch gekennzeichnet, dass der Längsschenkel (16) einen Durchbruch (28) für einen zwischen den Jochschenkeln (3,4) des Magnetjochs (2) angeordneten Permanentmagneten (9) aufweist.Magnet system according to claim 4 or 5,
characterized in that the longitudinal leg (16) has an opening (28) for a permanent magnet (9) arranged between the yoke legs (3, 4) of the magnetic yoke (2). Magnetsystem nach einem der Ansprüche 4 bis 6,
dadurch gekennzeichnet, dass der Klappanker (5) mittels eines Halterahmens (29), welcher die Jochpolflächen (11,12) auf dem Längsschenkel (16) umschließt, beweglich mit diesem verbunden ist.Magnet system according to one of claims 4 to 6,
characterized in that the hinged anchor (5) is movably connected to the longitudinal leg (16) by means of a holding frame (29) which surrounds the yoke pole surfaces (11, 12).
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
EP20030008656 EP1469500B1 (en) 2003-04-15 2003-04-15 Magnet system for a relay with a rocker armature
DE50307420T DE50307420D1 (en) 2003-04-15 2003-04-15 Magnetic system for a hinged armature relay

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

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EP1469500B1 EP1469500B1 (en) 2007-06-06

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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

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CN113611576A (en) * 2021-09-08 2021-11-05 哈尔滨工业大学 Single permanent magnet composite armature electromagnetic mechanism

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EP1469500B1 (en) 2007-06-06

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