EP0870315B1 - Armature for magnetic trigger mechanism - Google Patents

Armature for magnetic trigger mechanism Download PDF

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Publication number
EP0870315B1
EP0870315B1 EP96942173A EP96942173A EP0870315B1 EP 0870315 B1 EP0870315 B1 EP 0870315B1 EP 96942173 A EP96942173 A EP 96942173A EP 96942173 A EP96942173 A EP 96942173A EP 0870315 B1 EP0870315 B1 EP 0870315B1
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EP
European Patent Office
Prior art keywords
armature
metal strip
edges
tongue
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96942173A
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German (de)
French (fr)
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EP0870315A1 (en
Inventor
Adolf Tetik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Felten and Guilleaume Austria AG
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Felten and Guilleaume Austria AG
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Publication of EP0870315A1 publication Critical patent/EP0870315A1/en
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    • 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
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Definitions

  • the invention relates to an anchor for actuating the trigger plunger of magnetic triggers for circuit breakers, the one too is a sleeve-shaped sheet metal strip, and a stop for taking the trigger plunger with you.
  • Magnetic releases for circuit breakers are currently used Anchors mainly manufactured by machining. This is not only a time-consuming and costly manufacturing method that with not inconsiderable material losses, but the armatures for magnetic releases produced in this way have a comparative one high mass that the response of the with such an armature equipped magnetic trigger disadvantageous influenced.
  • An anchor of the type mentioned is from DE 25 31st 215 A known.
  • this anchor known from DE 25 31 215 the edges of the sheet metal strip rolled to anchor lie on the joint also not in areas.
  • the stop for taking the trigger plunger on Anchor formed by a recess in which a formation engages the anchor plunger.
  • a disadvantage of this known Anchor is that in the direction of movement of the magnet armature extending sheet metal strip end faces form an anchor slot and are spaced apart so that eddy currents are reduced. Such an anchor with the wanted As experiments have shown, air gap is in magnetic releases not satisfactory.
  • the invention has for its object a simpler manufacturable and effective armature for magnetic release for To provide circuit breakers.
  • this object is achieved in that the Edges of the metal strip aligned parallel to the axis of the anchor are close to each other at least in some areas and that the stop for the trigger plunger at least one with the Anchor formed in one piece, aligned transversely to the axis of the anchor Tongue is.
  • Anchors for magnetic releases are the subject of the subclaims.
  • the armature for magnetic releases proposed according to the invention can not only be deformed e.g. in a rolling process from a corresponding sheet metal blank, e.g. one punched Circuit board, manufacture, but also offers the advantage of a lower mass than the previously used, by cutting Machined armature for magnetic triggers. Furthermore, it has surprisingly been found that the inventive Anchor in magnetic triggers is very beneficial because no detrimental to the magnetic properties of the armature influencing air gap is present because the edges of the to Anchor of rolled sheet metal strip is at least partially tight lie together.
  • the tongue of the anchor according to the invention which acts as a driver for serves the trigger plunger, allows a simple construction of the trigger plunger and this can, if desired, as usual be carried out since the in the prior art (DE 25 31 215 A) required shaping is not required.
  • Magnetic release 1 of the known design shown in FIG. 1 are used in circuit breakers. They consist of a yoke 2 made of magnetically conductive material with which the Carrier 4 made of electrically conductive material Fixed contact 3 of the circuit breaker is connected. Furthermore, the magnetic release 1 has an excitation winding 5, the electrically conductive via (not shown) terminals with the is connected to the line to be protected. Inside the coil 5 a guide sleeve 6, usually made of plastic, is used, connected to the yoke 2 of the magnetic release 1, sleeve-shaped stop 7 is inserted.
  • FIG. 3 it can be slid in the guide sleeve 6 an armature 10 made of magnetically conductive material arranged, the end facing away from the stop sleeve 7 11 has an inwardly projecting stop which in Embodiment is formed by a tongue 12 and on the end 13 received inside the armature 10 a trigger plunger 14 supports.
  • a return spring 16 Over the tapered front Part 15 of the trigger plunger 14 is a return spring 16 inserted with its front end 17 on the inside of the Magnetic release 1 received end 18 of the stop sleeve 7 abuts and the trigger plunger 14 in its shown in Fig. 3 Standby position.
  • Anchor 10 used is as shown in FIGS. 4, 5 and 6 is, from a sheet metal (stamped) part with essentially rectangular outline shape shaped into a ring or sleeve is.
  • the stamped sheet metal part becomes a ring (sleeve) shaped that aligned parallel to the axis of the armature 10 Edges 20 lie close together and at joint 21 of these edges 20 there is no air gap or only a small one.
  • edges parallel to the axis 20 of the sheet metal strip deformed to form anchor 10 close to one another can lie in the manufacture of the armature 10 from the Sheet metal blanks are bent over, so that in the axial direction running edges 20 of the sheet metal blank also in the finished Anchors 10 are at least partially close together and no detrimental to the magnetic properties of the armature influencing air gap is present.
  • edges 20 aligned flat. This can e.g. can be easily achieved that these edges 20th when manufacturing (punching) the sheet metal part to the level of (still undeformed, i.e. flat) sheet metal part executed obliquely become.
  • an air gap is in the The area of the joint 21 practically does not exist.
  • the Edges 20 at a small, acute angle to each other and rest against each other only in the area of their inner edges 28.
  • Air gap in the area of joint 20 is also the same here small that it has the desired magnetic properties of the Anchor 10 is not significantly adversely affected.
  • Soft magnetic materials have proven particularly suitable proven as they are known per se for DC relays. Have the preferred soft magnetic materials a magnetic saturation of 1.4 to 2.0 T at a field strength of 4000 A / m.
  • a particularly preferred material for the anchor 10 according to the invention is that in DIN 17 405 (September 1979) with RFe80 (material number 1.1014) Material that has a magnetic saturation of 1.6 T at a Has a field strength of 4000 A / m.
  • An armature 10 for magnetic releases 1 for circuit breakers, in particular for circuit breakers, consists of one to one Sleeve with circular cross-sectional shape shaped sheet metal strips, its edges aligned with the axis of the armature 10 20 are at least partially close to each other.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Magnetic Treatment Devices (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Breakers (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Structure Of Transmissions (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Magnetic Heads (AREA)
  • Piles And Underground Anchors (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The invention relates to an armature (10) for magnetic trigger mechanisms (1) for safety switches, in particular for automatic cut-out switches, which comprises a sheet-metal strip which is formed to produce a sleeve of circular-ring cross-section. The ends (20) of said strip are aligned in relation to the armature (10) axis and lie close to each other at least in places. The stop for driving the tripping tappet(14) is a tongue (12) which along with the sheet-metal strip forms one member and is aligned transversely to the axis of the armature (10). To keep the air gap in the joint region (21) of the sleeve as small as possible, the edges (20) in the joint region (21) of the armature (10) can rest flatly against each other.

Description

Die Erfindung betrifft einen Anker zum Betätigen des Auslösestößels von Magnetauslösern für Schutzschalter, der ein zu einer Hülse geformter Blechstreifen ist, und einen Anschlag für das Mitnehmen des Auslösestößels aufweist.The invention relates to an anchor for actuating the trigger plunger of magnetic triggers for circuit breakers, the one too is a sleeve-shaped sheet metal strip, and a stop for taking the trigger plunger with you.

Derzeit werden in Magnetauslösern für Schutzschalter verwendete Anker vorwiegend spanabhebend hergestellt. Dies ist nicht nur eine zeit- und kostenaufwendige Herstellungsweise, die mit nicht unerheblichen Materialverlusten verbunden ist, sondern die so hergestellten Anker für Magnetauslöser haben eine vergleichsweise hohe Masse, die das Ansprechverhalten des mit einem solchen Anker bestückten Magnetauslösers nachteilig beeinflußt.Magnetic releases for circuit breakers are currently used Anchors mainly manufactured by machining. this is not only a time-consuming and costly manufacturing method that with not inconsiderable material losses, but the armatures for magnetic releases produced in this way have a comparative one high mass that the response of the with such an armature equipped magnetic trigger disadvantageous influenced.

Ein Anker der eingangs genannten Gattung ist aus der DE 25 31 215 A bekannt. Bei diesem aus der DE 25 31 215 bekannten Anker liegen die Ränder des zum Anker gerollten Blechstreifens an der Stoßstelle auch nicht bereichsweise aneinander an. Überdies ist der Anschlag für das Mitnehmen des Auslösestößels am Anker durch eine Aussparung gebildet, in die eine Ausformung des Ankerstößels eingreift. Nachteilig bei diesem bekannten Anker ist es, daß die in Bewegungsrichtung des Magnetankers verlaufenden Blechstreifenendflächen einen Ankerschlitz bilden und im Abstand voneinander angeordnet sind, so daß Wirbelströme verringert sind. Ein derartiger Anker mit dem gewollten Luftspalt ist, wie Versuche gezeigt haben, in Magnetauslösern nicht zufriedenstellend.An anchor of the type mentioned is from DE 25 31st 215 A known. In this anchor known from DE 25 31 215 the edges of the sheet metal strip rolled to anchor lie on the joint also not in areas. Moreover the stop for taking the trigger plunger on Anchor formed by a recess in which a formation engages the anchor plunger. A disadvantage of this known Anchor is that in the direction of movement of the magnet armature extending sheet metal strip end faces form an anchor slot and are spaced apart so that eddy currents are reduced. Such an anchor with the wanted As experiments have shown, air gap is in magnetic releases not satisfactory.

Der Erfindung liegt die Aufgabe zugrunde, einen einfacher herstellbaren und wirksamen Anker für Magnetauslöser für Schutzschalter zur Verfügung zu stellen.The invention has for its object a simpler manufacturable and effective armature for magnetic release for To provide circuit breakers.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die parallel zur Achse des Ankers ausgerichteten Ränder des Blechstreifens wenigstens bereichsweise dicht aneinander liegen und daß der Anschlag für den Auslösestößel wenigstens eine mit dem Anker einstückig ausgebildete, quer zur Achse des Ankers ausgerichtete Zunge ist.According to the invention this object is achieved in that the Edges of the metal strip aligned parallel to the axis of the anchor are close to each other at least in some areas and that the stop for the trigger plunger at least one with the Anchor formed in one piece, aligned transversely to the axis of the anchor Tongue is.

Bevorzugte und vorteilhafte Ausgestaltungen des erfindungsgemäßen Ankers für Magnetauslöser sind Gegenstand der Unteransprüche.Preferred and advantageous embodiments of the invention Anchors for magnetic releases are the subject of the subclaims.

Der erfindungsgemäß vorgeschlagene Anker für Magnetauslöser läßt sich nicht nur durch Verformen z.B. in einem Rollvorgang aus einem entsprechenden Blechzuschnitt, z.B. einer gestanzten Platine, herstellen, sondern bietet auch den Vorteil einer geringeren Masse als die bisher verwendeten, durch spanabhebende Bearbeitung hergestellten Anker für Magnetauslöser. Überdies hat sich überraschend gezeigt, daß der erfindungsgemäße Anker in Magnetauslösern sehr vorteilhaft ist, weil kein die magnetischen Eigenschaften des Ankers nachteilig beeinflussender Luftspalt vorliegt, da die Ränder des zum Anker gerollten Blechstreifens wenigstens bereichsweise dicht aneinanderliegen.The armature for magnetic releases proposed according to the invention can not only be deformed e.g. in a rolling process from a corresponding sheet metal blank, e.g. one punched Circuit board, manufacture, but also offers the advantage of a lower mass than the previously used, by cutting Machined armature for magnetic triggers. Furthermore, it has surprisingly been found that the inventive Anchor in magnetic triggers is very beneficial because no detrimental to the magnetic properties of the armature influencing air gap is present because the edges of the to Anchor of rolled sheet metal strip is at least partially tight lie together.

Die Zunge des erfindungsgemäßen Ankers, die als Mitnehmer für den Auslösestößel dient, erlaubt eine einfache Konstruktion des Auslösestößels und dieser kann, falls gewünscht, wie gewohnt ausgeführt sein, da die im Stand der Technik (DE 25 31 215 A) erforderliche Ausformung nicht benötigt wird.The tongue of the anchor according to the invention, which acts as a driver for serves the trigger plunger, allows a simple construction of the trigger plunger and this can, if desired, as usual be carried out since the in the prior art (DE 25 31 215 A) required shaping is not required.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachstehenden Beschreibung, in welcher auf die angeschlossenen Zeichnungen Bezug genommen wird.Further advantages, features and details of the invention result from the description below, in which reference is made to the attached drawings.

Es zeigen: Fig. 1 einen Magnetauslöser in Ansicht,

  • Fig. 2 teilweise im Schnitt den Magnetauslöser ohne Führungshülse, Anker und Auslösestößel,
  • Fig. 3 teilweise im Schnitt und in größerem Maßstab die Baueinheit aus Führungshülse, erfindungsgemäßem Anker und Auslösestößel sowie Rückstellfeder,
  • die Fig. 4, 5 und 6 teilweise geschnitten einen erfindungsgemäßen Anker und
  • Fig. 7 eine andere Ausführungsform des erfindungsgemäßen Ankers.
    • 1 shows a magnetic release in view,
  • 2 partially in section the magnetic release without guide sleeve, armature and release plunger,
  • 3 partially in section and on a larger scale, the assembly of the guide sleeve, inventive anchor and release plunger and return spring,
  • 4, 5 and 6 partially cut an anchor according to the invention and
  • Fig. 7 shows another embodiment of the anchor according to the invention.

    • Magnetauslöser 1 der in Fig. 1 gezeigten, bekannten Bauform werden in Leitungsschutzschaltern verwendet. Sie bestehen aus einem Joch 2 aus magnetisch leitendem Werkstoff, mit dem der aus elektrisch leitendem Werkstoff bestehende Träger 4 des ortsfesten Kontaktes 3 des Schutzschalters verbunden ist. Weiters besitzt der Magnetauslöser 1 eine Erregerwicklung 5, die elektrisch leitend über (nicht gezeigte) Klemmen mit der zu schützenden Leitung verbunden ist. Im Inneren der Spule 5 ist eine Führungshülse 6, meist aus Kunststoff, eingesetzt, die über eine mit dem Joch 2 des Magnetauslösers 1 verbundenen, hülsenförmigen Anschlag 7 gesteckt ist. Beispielsweise ist dieser hülsenförmige Anschlag 7 durch Umbördeln seines verjüngten Ansatzes 8 mit dem Joch 2 und dem Träger 4 aus elektrisch leitendem Werkstoff verbunden, wodurch gleichzeitig die Verbindung zwischen dem elektrisch leitenden Träger 4, der den Festkontakt 3 trägt, und dem Joch 2 erreicht wird.Magnetic release 1 of the known design shown in FIG. 1 are used in circuit breakers. they consist of a yoke 2 made of magnetically conductive material with which the Carrier 4 made of electrically conductive material Fixed contact 3 of the circuit breaker is connected. Furthermore, the magnetic release 1 has an excitation winding 5, the electrically conductive via (not shown) terminals with the is connected to the line to be protected. Inside the coil 5 a guide sleeve 6, usually made of plastic, is used, connected to the yoke 2 of the magnetic release 1, sleeve-shaped stop 7 is inserted. For example is this sleeve-shaped stop 7 by flanging his tapered approach 8 with the yoke 2 and the carrier 4 electrically conductive material connected, thereby simultaneously the connection between the electrically conductive carrier 4, the carries the fixed contact 3, and the yoke 2 is reached.

    In der Führungshülse 6 ist ausweislich Fig. 3 gleitend verschiebbar ein Anker 10 aus magnetisch leitendem Werkstoff angeordnet, der an seinem der Anschlaghülse 7 abgekehrten Ende 11 einen nach innen vorspringenden Anschlag aufweist, der im Ausführungsbeispiel von einer Zunge 12 gebildet wird, und an dem sich das im Inneren des Ankers 10 aufgenommene Ende 13 eines Auslösestößels 14 abstützt. Über den verjüngten, vorderen Teil 15 des Auslösestößels 14 ist eine Rückholfeder 16 gesteckt, die mit ihrem vorderen Ende 17 am im Inneren des Magnetauslösers 1 aufgenommenen Ende 18 der Anschlaghülse 7 anliegt und den Auslösestößel 14 in seiner in Fig. 3 dargestellten Bereitschaftslage hält.As can be seen in FIG. 3, it can be slid in the guide sleeve 6 an armature 10 made of magnetically conductive material arranged, the end facing away from the stop sleeve 7 11 has an inwardly projecting stop which in Embodiment is formed by a tongue 12 and on the end 13 received inside the armature 10 a trigger plunger 14 supports. Over the tapered front Part 15 of the trigger plunger 14 is a return spring 16 inserted with its front end 17 on the inside of the Magnetic release 1 received end 18 of the stop sleeve 7 abuts and the trigger plunger 14 in its shown in Fig. 3 Standby position.

    Im Auslösefall, wenn das durch die Wicklung 5 erzeugte Magnetfeld hinreichend groß ist, wird der Anker 10 nach rechts der Fig. 1 gezogen und nimmt dabei über seine Zunge 12 den Auslösestößel 14 mit, so daß dieser mit seinem vorderen Ende 19 eine Auslösemechanik (nicht gezeigt) betätigt, durch welche, auf beispielsweise an sich bekannte Art und Weise, ein beweglicher Kontakt vom Festkontakt 3 abgehoben wird, also der Schutzschalter den Stromkreis unterbricht.In the event of tripping, when the magnetic field generated by the winding 5 is sufficiently large, the anchor 10 to the right of the Fig. 1 pulled and takes over his tongue 12, the trigger plunger 14 with, so that this with its front end 19th actuates a trigger mechanism (not shown), through which in a manner known per se, for example, a movable one Contact is lifted from the fixed contact 3, that is Circuit breaker breaks the circuit.

    Der gemäß dem Vorschlag der Erfindung in dem beschriebenen Magnetauslöser 1 oder einem Magnetauslöser ähnlicher Bauart verwendete Anker 10 besteht, wie in den Fig. 4, 5 und 6 gezeigt ist, aus einem Blech(stanz)teil mit im wesentlichen rechteckiger Umrißform, der zu einem Ring oder Hülse geformt ist. Dabei wird der Blechstanzteil so zu einem Ring (Hülse) geformt, daß die parallel zur Achse des Ankers 10 ausgerichteten Kanten 20 dicht aneinander liegen und an der Stoßstelle 21 dieser Kanten 20 kein oder nur ein kleiner Luftspalt vorliegt. Um sicherzustellen, daß die parallel zur Achse liegenden Kanten 20 des zum Anker 10 verformten Blechstreifens dicht aneinander liegen, kann beim Herstellen des Ankers 10 aus dem Blechzuschnitt überbogen werden, so daß die in Achsrichtung verlaufenden Kanten 20 des Blechzuschnitts auch im fertigen Anker 10 wenigstens bereichsweise dicht aneinander liegen und kein die magnetischen Eigenschaften des Ankers nachteilig beeinflussender Luftspalt vorliegt.The described in the proposal of the invention in the Magnetic release 1 or a magnetic release of a similar design Anchor 10 used is as shown in FIGS. 4, 5 and 6 is, from a sheet metal (stamped) part with essentially rectangular outline shape shaped into a ring or sleeve is. The stamped sheet metal part becomes a ring (sleeve) shaped that aligned parallel to the axis of the armature 10 Edges 20 lie close together and at joint 21 of these edges 20 there is no air gap or only a small one. To ensure that the edges parallel to the axis 20 of the sheet metal strip deformed to form anchor 10 close to one another can lie in the manufacture of the armature 10 from the Sheet metal blanks are bent over, so that in the axial direction running edges 20 of the sheet metal blank also in the finished Anchors 10 are at least partially close together and no detrimental to the magnetic properties of the armature influencing air gap is present.

    Um den im Inneren des Ankers 10 aufgenommenen Auslösestößel 14 im Auslösefall bei der Bewegung des Ankers 10 mitzunehmen, ist die (wenigstens eine) radial nach innen abgewinkelte Zunge 12 vorgesehen, die mit dem den eigentlichen Anker 10 bildenden Blechteil im Ausführungsbeispiel einstückig ausgebildet ist.Around the release plunger 14 received inside the armature 10 in the event of tripping when moving the armature 10 is to be carried the (at least one) tongue 12 angled radially inward provided that with the actual anchor 10 forming Sheet metal part is formed in one piece in the embodiment.

    Beiderseits der Wurzel 25 der rechtwinklig abgebogenen Zunge 12 sind Ausschnitte 26 vorgesehen, so daß die Wurzel 25 der Zunge 12 so abgebogen werden kann, daß die quer zur Achse des Ankers 10 verlaufende Zunge 12 über die ihr benachbarte Endfläche 27 des Ankers 10 nicht übersteht.On both sides of the root 25 of the tongue bent at right angles 12 cutouts 26 are provided so that the root 25 of the Tongue 12 can be bent so that the transverse to the axis of Anchor 10 extending tongue 12 over the adjacent end surface 27 of the armature 10 does not survive.

    Bei der in Fig. 5 gezeigten Ausführungsform des Ankers 10 sind die Kanten 20 flächig aneinanderliegend ausgerichtet. Dies kann z.B. dadurch einfach erreicht werden, daß diese Kanten 20 beim Herstellen (Stanzen) des Blechteils zur Ebene des (noch nicht verformten, also ebenen) Blechteils schrägstehend ausgeführt werden. Bei dieser Ausführungsform ist ein Luftspalt im Bereich der Stoßstelle 21 praktisch nicht vorhanden.In the embodiment of the armature 10 shown in FIG. 5 the edges 20 aligned flat. This can e.g. can be easily achieved that these edges 20th when manufacturing (punching) the sheet metal part to the level of (still undeformed, i.e. flat) sheet metal part executed obliquely become. In this embodiment, an air gap is in the The area of the joint 21 practically does not exist.

    Bei der Ausführungsform des Ankers 10 nach Fig. 7 stehen die Kanten 20 in einem kleinen, spitzen Winkel zueinander und liegen nur im Bereich ihrer Innenkanten 28 aneinander an. Der Luftspalt im Bereich der Stoßstelle 20 ist aber auch hier so klein, daß er die gewünschten magnetischen Eigenschaften des Ankers 10 nicht wesentlich nachteilig beeinflußt.In the embodiment of the armature 10 according to FIG. 7, the Edges 20 at a small, acute angle to each other and rest against each other only in the area of their inner edges 28. Of the Air gap in the area of joint 20 is also the same here small that it has the desired magnetic properties of the Anchor 10 is not significantly adversely affected.

    Als Werkstoff für den Anker 10 ist im Prinzip jeder magnetisch leitende Werkstoff geeignet.In principle, everyone is magnetic as the material for the armature 10 conductive material suitable.

    Als besonders geeignet haben sich weichmagnetische Werkstoffe erwiesen, wie sie für Gleichstromrelais an sich bekannt sind. Die bevorzugt verwendeten weichmagnetischen Werkstoffe haben eine magnetische Sättigung von 1,4 bis 2,0 T bei einer Feldstärke von 4000 A/m. Ein besonders bevorzugter Werkstoff für den erfindungsgemäßen Anker 10 ist der in DIN 17 405 (September 1979) mit RFe80 (Werkstoffnummer 1.1014) beschriebene Werkstoff, der eine magnetische Sättigung von 1,6 T bei einer Feldstärke von 4000 A/m besitzt.Soft magnetic materials have proven particularly suitable proven as they are known per se for DC relays. Have the preferred soft magnetic materials a magnetic saturation of 1.4 to 2.0 T at a field strength of 4000 A / m. A particularly preferred material for the anchor 10 according to the invention is that in DIN 17 405 (September 1979) with RFe80 (material number 1.1014) Material that has a magnetic saturation of 1.6 T at a Has a field strength of 4000 A / m.

    Zusammenfassend kann ein Ausführungsbeispiel der Erfindung wie folgt dargestellt werden:In summary, an embodiment of the invention can be like are represented as follows:

    Ein Anker 10 für Magnetauslöser 1 für Schutzschalter, insbesondere für Leitungsschutzschalter, besteht aus einem zu einer Hülse mit kreisringförmiger Querschnittsform geformten Blechstreifen, dessen zur Achse des Ankers 10 ausgerichteten Ränder 20 wenigstens bereichsweise dicht aneinander liegen. Der Anschlag für das Mitnehmen des Auslösestößels 14 ist eine mit dem Blechstreifen einstückig ausgebildete, quer zur Achse des Ankers 10 ausgerichtete Zunge 12. Um den Luftspalt im Bereich der Stoßstelle 21 der Hülse so klein wie möglich zu halten, können die Kanten 20 im Bereich der Stoßstelle 21 des Ankers 10 flächig aneinander anliegen.An armature 10 for magnetic releases 1 for circuit breakers, in particular for circuit breakers, consists of one to one Sleeve with circular cross-sectional shape shaped sheet metal strips, its edges aligned with the axis of the armature 10 20 are at least partially close to each other. The attack for taking the trigger plunger 14 with the sheet metal strip integrally formed, transverse to the axis of the Anchor 10 aligned tongue 12. Around the air gap in the area to keep the joint 21 of the sleeve as small as possible, can the edges 20 in the region of the joint 21 of the anchor 10 lie flat against each other.

    Claims (12)

    1. Armature (10) for actuating the trigger plunger (14) of magnetic trigger mechanisms (1) for circuit breakers, which armature is a metal strip shaped into a sleeve and has a stop (11) for the entrainment of the trigger plunger (14), characterized in that the metal strip edges (20) aligned parallel to the axis of the armature (10) lie at least zonally tight against one another, and in that the stop for the trigger plunger (14) is at least one tongue (12) formed integrally with the armature (10) and aligned transversely to the axis of the armature (10).
    2. Armature according to Claim 1, characterized in that the metal strip is rolled to form a sleeve with annular cross-sectional shape.
    3. Armature according to Claim 1 or 2, characterized in that the tongue (12) makes a right angle with the wall of the armature (1) and is bent inwards.
    4. Armature according to one of Claims 1 to 3, characterized in that the root (25) of the tongue (12) lying in the wall of the armature (10) is cut free on both sides by cut-outs (26).
    5. Armature according to one of Claims 1 to 4, characterized in that the tongue (12) is arranged inside that end face (27) of the sleeve forming the armature (10) which is next to the tongue (12).
    6. Armature according to Claim 5, characterized in that the outer face of the tongue (12) is flush with the end face (27) of the armature (10) next to it.
    7. Armature according to one of Claims 1 to 6, characterized in that the edges (20) of the metal strip shaped to form the armature (10) lie flat against each other in the region of the joint (21) of the armature (10) (Fig. 6).
    8. Armature according to Claim 7, characterized in that the narrow faces of the metal strip are aligned obliquely with respect to the plane of the metal strip in the region of the edges (20) when the metal strip is still flat.
    9. Armature according to one of Claims 1 to 6, characterized in that the edges (20) of the metal strip shaped to form the armature (10) lie against each other by their inner edges (28) in the region of the joint (21) of the armature (10) (Fig. 7).
    10. Armature according to Claim 9, characterized in that the narrow faces of the metal strip are aligned normal to the plane of the metal strip in the region of the edges (20) when the metal strip is still flat.
    11. Armature according to one of Claims 1 to 10, characterized in that the armature (10) consists of a soft magnetic material with a magnetic saturation of 1.64 to 2.0 T, preferably 1.6 T, at a field strength of 4000 A/m.
    12. Armature according to one of Claims 1 to 11, characterized in that the armature (10) consists of the material RFe 80 according to DIN 17 405.
    EP96942173A 1995-12-28 1996-12-18 Armature for magnetic trigger mechanism Expired - Lifetime EP0870315B1 (en)

    Applications Claiming Priority (4)

    Application Number Priority Date Filing Date Title
    AT211195 1995-12-28
    AT2111/95 1995-12-28
    AT0211195A AT410858B (en) 1995-12-28 1995-12-28 ANCHOR FOR MAGNETIC TRIGGER
    PCT/AT1996/000252 WO1997024746A1 (en) 1995-12-28 1996-12-18 Armature for magnetic trigger mechanism

    Publications (2)

    Publication Number Publication Date
    EP0870315A1 EP0870315A1 (en) 1998-10-14
    EP0870315B1 true EP0870315B1 (en) 1999-09-29

    Family

    ID=3528017

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96942173A Expired - Lifetime EP0870315B1 (en) 1995-12-28 1996-12-18 Armature for magnetic trigger mechanism

    Country Status (12)

    Country Link
    EP (1) EP0870315B1 (en)
    AT (2) AT410858B (en)
    AU (1) AU713111B2 (en)
    CZ (1) CZ287121B6 (en)
    DE (1) DE59603247D1 (en)
    ES (1) ES2139395T3 (en)
    GR (1) GR3032197T3 (en)
    HU (1) HU222336B1 (en)
    NO (1) NO312147B1 (en)
    PL (1) PL181900B1 (en)
    SK (1) SK285089B6 (en)
    WO (1) WO1997024746A1 (en)

    Families Citing this family (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE19845476B4 (en) * 1998-10-02 2004-08-12 Aeg Niederspannungstechnik Gmbh & Co Kg Magnetic system for miniature circuit breakers
    DE10126849A1 (en) * 2001-06-01 2002-12-12 Siemens Ag Trigger armature for electromagnetic trigger for switching device has base body of ferromagnetic material in the form of flexible compressed, pressed or stamped part
    DE102015203750B4 (en) * 2015-03-03 2021-05-27 Siemens Aktiengesellschaft Unlocking device for a circuit breaker and circuit breaker
    EP3471114B1 (en) * 2017-10-14 2024-06-26 Hamilton Sundstrand Corporation Lvdt core formed of metal sheet

    Family Cites Families (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE2531215A1 (en) * 1975-07-12 1977-02-03 Bbc Brown Boveri & Cie Solenoid magnetic trip for protective circuit breakers - has coil former in one piece with moving and stationery cores and positively held in iron yoke
    FR2527831B1 (en) * 1982-05-28 1986-08-29 Telemecanique Electrique PLUNGER CORE, METHOD FOR MANUFACTURING SAME, AND RELAY WITH INTENSITY THRESHOLD THUS EQUIPPED
    DE3310914A1 (en) * 1983-03-25 1984-09-27 Brown, Boveri & Cie Ag, 6800 Mannheim MAGNETIC RELEASE
    DE3619239A1 (en) * 1986-06-07 1987-12-10 Kloeckner Moeller Elektrizit Rapid-action tripping device for line protection circuit breakers
    DE3904448A1 (en) * 1989-02-15 1990-08-16 Bosch Gmbh Robert MAGNETIC TANK

    Also Published As

    Publication number Publication date
    WO1997024746A1 (en) 1997-07-10
    EP0870315A1 (en) 1998-10-14
    PL327232A1 (en) 1998-12-07
    NO312147B1 (en) 2002-03-25
    PL181900B1 (en) 2001-10-31
    HUP9901164A3 (en) 1999-11-29
    DE59603247D1 (en) 1999-11-04
    ATA211195A (en) 2002-12-15
    NO982912L (en) 1998-08-21
    NO982912D0 (en) 1998-06-22
    HU222336B1 (en) 2003-06-28
    CZ287121B6 (en) 2000-09-13
    AU713111B2 (en) 1999-11-25
    ATE185219T1 (en) 1999-10-15
    AU1132197A (en) 1997-07-28
    CZ199398A3 (en) 1998-12-16
    ES2139395T3 (en) 2000-02-01
    HUP9901164A2 (en) 1999-07-28
    AT410858B (en) 2003-08-25
    GR3032197T3 (en) 2000-04-27
    SK88698A3 (en) 1999-10-08
    SK285089B6 (en) 2006-06-01

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