EP0870315A1 - Armature for magnetic trigger mechanism - Google Patents

Armature for magnetic trigger mechanism

Info

Publication number
EP0870315A1
EP0870315A1 EP96942173A EP96942173A EP0870315A1 EP 0870315 A1 EP0870315 A1 EP 0870315A1 EP 96942173 A EP96942173 A EP 96942173A EP 96942173 A EP96942173 A EP 96942173A EP 0870315 A1 EP0870315 A1 EP 0870315A1
Authority
EP
European Patent Office
Prior art keywords
armature
metal strip
sheet metal
anchor
anchor according
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
EP96942173A
Other languages
German (de)
French (fr)
Other versions
EP0870315B1 (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
Original Assignee
Felten and Guilleaume Austria AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Felten and Guilleaume Austria AG filed Critical Felten and Guilleaume Austria AG
Publication of EP0870315A1 publication Critical patent/EP0870315A1/en
Application granted granted Critical
Publication of EP0870315B1 publication Critical patent/EP0870315B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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 armature for actuating the trigger plunger of magnetic triggers for circuit breakers, which is a sheet metal strip formed into a sleeve, and has a stop for taking the trigger plunger with it.
  • An anchor of the type mentioned is known from DE 25 31 215 A.
  • this anchor known from DE 25 31 215 the edges of the sheet metal strip rolled to anchor do not abut one another in regions at the joint.
  • the stop for taking the trigger plunger on the armature is formed by a recess into which a shape of the armature plunger engages.
  • a disadvantage of this known armature is that the sheet-metal strip end surfaces extending in the direction of movement of the magnet armature form an armature slot and are arranged at a distance from one another, so that eddy currents are reduced. Experiments have shown that such an armature with the desired air gap is unsatisfactory in magnetic releases.
  • the invention has for its object to provide a simple to manufacture and effective armature for magnetic triggers for circuit breakers.
  • this object is achieved in that the edges of the sheet metal strip which are aligned parallel to the axis of the armature are at least partially close to one another and in that the stop for the trigger plunger has at least one with the Anchor is integrally formed tongue which is oriented transversely to the axis of the anchor.
  • 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. a stamped circuit board, but also offers the advantage of a lower mass than the hitherto used armature for magnetic releases produced by machining. Furthermore, it has surprisingly been found that the armature according to the invention is very advantageous in magnetic triggers because there is no air gap which adversely affects the magnetic properties of the armature, since the edges of the sheet metal strip rolled toward the armature lie at least in regions close to one another.
  • the tongue of the anchor according to the invention which serves as a driver for the release plunger, allows a simple construction of the release plunger and, if desired, this can be carried out as usual, since the shape required in the prior art (DE 25 31 215 A) is not is needed.
  • FIG. 3 shows, partly in section and on a larger scale, the structural unit comprising the guide sleeve, the anchor according to the invention and the release plunger and the return spring,
  • FIG 7 shows another embodiment of the anchor according to the invention.
  • Magnetic releases 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, to which the carrier 4 of the fixed contact 3 of the circuit breaker, which is made of electrically conductive material, is connected. Furthermore, the magnetic release 1 has an excitation winding 5, which is electrically conductively connected to the line to be protected via terminals (not shown). In the interior of the coil 5, a guide sleeve 6, usually made of plastic, is inserted, which is inserted over a sleeve-shaped stop 7 connected to the yoke 2 of the magnetic release 1.
  • this sleeve-shaped stop 7 is connected to the yoke 2 and the carrier 4 made of electrically conductive material by flanging its tapered shoulder 8, whereby at the same time the connection between the electrically conductive carrier 4, which carries the fixed contact 3, and the yoke 2 is achieved.
  • an armature 10 made of magnetically conductive material is slidably displaceably shown in FIG. 3 and has an inwardly projecting stop at its end 11 facing away from the stop sleeve 7, which stop is formed by a tongue 12 in the exemplary embodiment, and on which supports the end 13 of a trigger plunger 14 received in the interior of the armature 10.
  • a return spring 16 is placed over the tapered, front part 15 of the trigger plunger 14, the front end 17 of which rests on the end 18 of the stop sleeve 7 received inside the magnetic trigger 1 and the trigger plunger 14 is shown in FIG. 3 Standby position.
  • the armature 10 used according to the proposal of the invention in the described magnetic release 1 or a magnetic release of a similar design consists, as shown in FIGS. 4, 5 and 6, of a sheet metal (stamped) part with an essentially rectangular outline, which is formed into a ring or sleeve.
  • the stamped sheet metal part is shaped into a ring (sleeve) in such a way that the edges 20 aligned parallel to the axis of the armature 10 are close together and there is no or only a small air gap at the joint 21 of these edges 20.
  • the sheet metal blank can be bent over when the anchor 10 is manufactured, so that the edges 20 of the sheet metal cut extending in the axial direction are also produced Armatures 10 are at least partially close to one another and there is no air gap which adversely affects the magnetic properties of the armature.
  • the (at least one) radially inwardly angled tongue 12 is provided, which is formed in one piece with the sheet metal part which forms the actual armature 10 in the exemplary embodiment.
  • Cutouts 26 are provided on both sides of the root 25 of the tongue 12 bent at right angles, so that the root 25 of the tongue 12 can be bent so that the tongue 12 extending transversely to the axis of the armature 10 does not cross the adjacent end surface 27 of the armature 10 survives.
  • edges 20 are aligned flat against one another. This can be achieved, for example, simply by these edges 20 protruding obliquely to the plane of the (not yet deformed, that is to say planar) sheet metal part during the manufacture (stamping) of the sheet metal part. leads. In this embodiment, there is practically no air gap in the area of the joint 21.
  • the edges 20 are at a small, acute angle to one another and only abut one another in the region of their inner edges 28.
  • the air gap in the region of the joint 20 is also so small here that it does not significantly adversely affect the desired magnetic properties of the armature 10.
  • any magnetically conductive material is suitable as the material for the armature 10.
  • Soft magnetic materials such as are known per se for direct current relays have proven particularly suitable.
  • the preferably used soft magnetic materials have a magnetic saturation of 1.4 to 2.0 T with a field strength of 4000 A / m.
  • a particularly preferred material for the armature 10 according to the invention is the material described in DIN 17 405 (September 1979) with RFe80 (material number 1.1014), which has a magnetic saturation of 1.6 T with a field strength of 4000 A / m.
  • An armature 10 for magnetic triggers 1 for circuit breakers in particular for circuit breakers, consists of a sheet metal strip formed into a sleeve with an annular cross-sectional shape, the edges 20 of which are aligned with the axis of armature 10, at least in regions lying close together.
  • the stop for taking the trigger plunger 14 with it is a tongue 12 formed integrally with the sheet metal strip and oriented transversely to the axis of the armature 10.
  • the edges 20 in Area of the joint 21 of the armature 10 lie flat against one another.

Landscapes

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

Anker für Magnetauslöser Anchor for magnetic release
Die Erfindung betrifft einen Anker zum Betätigen des Auslöse¬ stößels 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 armature for actuating the trigger plunger of magnetic triggers for circuit breakers, which is a sheet metal strip formed into a sleeve, and has a stop for taking the trigger plunger with it.
Derzeit werden in Magnetauslösern für Schutzschalter verwende¬ te 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 ver- gleichsweise hohe Masse, die das Ansprechverhalten des mit einem solchen Anker bestückten Magnetauslösers nachteilig beeinflußt.At present, armatures used in magnetic releases for circuit breakers are predominantly machined. This is not only a time-consuming and costly method of production, which is associated with considerable material losses, but the armatures thus produced for magnetic releases have a comparatively high mass, which adversely affects the response behavior of the magnetic release equipped with such an armature.
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. Über¬ dies 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 Wirbelströ¬ me 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 known from DE 25 31 215 A. In this anchor known from DE 25 31 215, the edges of the sheet metal strip rolled to anchor do not abut one another in regions at the joint. In addition, the stop for taking the trigger plunger on the armature is formed by a recess into which a shape of the armature plunger engages. A disadvantage of this known armature is that the sheet-metal strip end surfaces extending in the direction of movement of the magnet armature form an armature slot and are arranged at a distance from one another, so that eddy currents are reduced. Experiments have shown that such an armature with the desired air gap is unsatisfactory in magnetic releases.
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 to provide a simple to manufacture and effective armature for magnetic triggers for circuit breakers.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die parallel zur Achse des Ankers ausgerichteten Ränder des Blech¬ streifens wenigstens bereichsweise dicht aneinander liegen und daß der Anschlag für den Auslösestößel wenigstens eine mit dem Anker einstückig ausgebildete, quer zur Achse des Ankers aus¬ gerichtete Zunge ist.According to the invention, this object is achieved in that the edges of the sheet metal strip which are aligned parallel to the axis of the armature are at least partially close to one another and in that the stop for the trigger plunger has at least one with the Anchor is integrally formed tongue which is oriented transversely to the axis of the anchor.
Bevorzugte und vorteilhafte Ausgestaltungen des erfindungs- gemäßen Ankers für Magnetauslöser sind Gegenstand der Unter¬ ansprüche.Preferred and advantageous configurations of the armature according to the invention 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 spanabhe¬ bende Bearbeitung hergestellten Anker für Magnetauslöser. Überdies hat sich überraschend gezeigt, daß der erfindungs- gemäße 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. a stamped circuit board, but also offers the advantage of a lower mass than the hitherto used armature for magnetic releases produced by machining. Furthermore, it has surprisingly been found that the armature according to the invention is very advantageous in magnetic triggers because there is no air gap which adversely affects the magnetic properties of the armature, since the edges of the sheet metal strip rolled toward the armature lie at least in regions close to one another.
Die Zunge des erfindungsgemäßen Ankers, die als Mitnehmer für den Auslösestößel dient, erlaubt eine einfache Konstruktion des Auslösestößels und dieser kann, falls gewünscht, wie ge¬ wohnt 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 serves as a driver for the release plunger, allows a simple construction of the release plunger and, if desired, this can be carried out as usual, since the shape required in the prior art (DE 25 31 215 A) is not is needed.
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 following description, in which reference is made to the attached drawings.
Es zeigen: Fig. 1 einen Magnetauslöser in Ansicht,1 shows a magnetic release in view,
Fig. 2 teilweise im Schnitt den Magnetauslöser ohne Führungs¬ hülse, Anker und Auslösestößel,2 partially in section the magnetic release without guide sleeve, armature and release plunger,
Fig. 3 teilweise im Schnitt und in größerem Maßstab die Bau¬ einheit aus Führungshülse, erfindungsgemäßem Anker und Aus¬ lösestößel sowie Rückstellfeder,3 shows, partly in section and on a larger scale, the structural unit comprising the guide sleeve, the anchor according to the invention and the release plunger and the return spring,
die Fig. 4, 5 und 6 teilweise geschnitten einen erfindungs- gemäßen Anker und4, 5 and 6 partially cut an invention according anchor and
Fig. 7 eine andere Ausführungsform des erfindungsgemäßen An¬ kers.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 verbunde¬ nen, 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 releases 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, to which the carrier 4 of the fixed contact 3 of the circuit breaker, which is made of electrically conductive material, is connected. Furthermore, the magnetic release 1 has an excitation winding 5, which is electrically conductively connected to the line to be protected via terminals (not shown). In the interior of the coil 5, a guide sleeve 6, usually made of plastic, is inserted, which is inserted over a sleeve-shaped stop 7 connected to the yoke 2 of the magnetic release 1. For example, this sleeve-shaped stop 7 is connected to the yoke 2 and the carrier 4 made of electrically conductive material by flanging its tapered shoulder 8, whereby at the same time the connection between the electrically conductive carrier 4, which carries the fixed contact 3, and the yoke 2 is achieved.
In der Führungshülse 6 ist ausweislich Fig. 3 gleitend ver¬ schiebbar 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, vor- deren 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 darge¬ stellten Bereitschaftslage hält.3, an armature 10 made of magnetically conductive material is slidably displaceably shown in FIG. 3 and has an inwardly projecting stop at its end 11 facing away from the stop sleeve 7, which stop is formed by a tongue 12 in the exemplary embodiment, and on which supports the end 13 of a trigger plunger 14 received in the interior of the armature 10. A return spring 16 is placed over the tapered, front part 15 of the trigger plunger 14, the front end 17 of which rests on the end 18 of the stop sleeve 7 received inside the magnetic trigger 1 and the trigger plunger 14 is shown in FIG. 3 Standby position.
Im Auslösefall, wenn das durch die Wicklung 5 erzeugte Magnet¬ feld hinreichend groß ist, wird der Anker 10 nach rechts der Fig. 1 gezogen und nimmt dabei über seine Zunge 12 den Aus¬ lösestößel 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 beweg¬ licher 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 armature 10 is pulled to the right of FIG. 1 and takes the tripping plunger 14 with it via its tongue 12 so that its front end 19 actuates a trigger mechanism (not shown), by means of which In a manner known per se, for example, a movable contact is lifted off the fixed contact 3, that is to say the circuit breaker interrupts 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 ge¬ zeigt 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 ausgerichte¬ ten 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 Kan¬ ten 20 des zum Anker 10 verformten Blechstreifens dicht anein¬ ander 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 armature 10 used according to the proposal of the invention in the described magnetic release 1 or a magnetic release of a similar design consists, as shown in FIGS. 4, 5 and 6, of a sheet metal (stamped) part with an essentially rectangular outline, which is formed into a ring or sleeve. The stamped sheet metal part is shaped into a ring (sleeve) in such a way that the edges 20 aligned parallel to the axis of the armature 10 are close together and there is no or only a small air gap at the joint 21 of these edges 20. In order to ensure that the edges 20 of the sheet metal strip deformed to form the anchor 10 lie parallel to the axis, the sheet metal blank can be bent over when the anchor 10 is manufactured, so that the edges 20 of the sheet metal cut extending in the axial direction are also produced Armatures 10 are at least partially close to one another and there is no air gap which adversely affects the magnetic properties of the armature.
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.In order to take the trigger plunger 14 received in the interior of the armature 10 with it when the armature 10 moves, the (at least one) radially inwardly angled tongue 12 is provided, which is formed in one piece with the sheet metal part which forms the actual armature 10 in the exemplary 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 End¬ fläche 27 des Ankers 10 nicht übersteht.Cutouts 26 are provided on both sides of the root 25 of the tongue 12 bent at right angles, so that the root 25 of the tongue 12 can be bent so that the tongue 12 extending transversely to the axis of the armature 10 does not cross the adjacent end surface 27 of the armature 10 survives.
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 ausge- führt 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 are aligned flat against one another. This can be achieved, for example, simply by these edges 20 protruding obliquely to the plane of the (not yet deformed, that is to say planar) sheet metal part during the manufacture (stamping) of the sheet metal part. leads. In this embodiment, there is practically no air gap in the area of the joint 21.
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 are at a small, acute angle to one another and only abut one another in the region of their inner edges 28. The air gap in the region of the joint 20 is also so small here that it does not significantly adversely affect the desired magnetic properties of the armature 10.
Als Werkstoff für den Anker 10 ist im Prinzip jeder magnetisch leitende Werkstoff geeignet.In principle, any magnetically conductive material is suitable as the material for the armature 10.
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 Feld¬ stärke von 4000 A/m. Ein besonders bevorzugter Werkstoff für den erfindungsgemäßen Anker 10 ist der in DIN 17 405 (Septem- ber 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 such as are known per se for direct current relays have proven particularly suitable. The preferably used soft magnetic materials have a magnetic saturation of 1.4 to 2.0 T with a field strength of 4000 A / m. A particularly preferred material for the armature 10 according to the invention is the material described in DIN 17 405 (September 1979) with RFe80 (material number 1.1014), which has a magnetic saturation of 1.6 T with 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 represented as follows:
Ein Anker 10 für Magnetauslöser 1 für Schutzschalter, insbe¬ sondere für Leitungsschutzschalter, besteht aus einem zu einer Hülse mit kreisringförmiger Querschnittsform geformten Blech- streifen, dessen zur Achse des Ankers 10 ausgerichteten Ränder 20 wenigstens bereichsweise dicht aneinander liegen. Der An¬ schlag 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 triggers 1 for circuit breakers, in particular for circuit breakers, consists of a sheet metal strip formed into a sleeve with an annular cross-sectional shape, the edges 20 of which are aligned with the axis of armature 10, at least in regions lying close together. The stop for taking the trigger plunger 14 with it is a tongue 12 formed integrally with the sheet metal strip and oriented transversely to the axis of the armature 10. In order to keep the air gap in the region of the joint 21 of the sleeve as small as possible, the edges 20 in Area of the joint 21 of the armature 10 lie flat against one another.

Claims

Patentansprüche: Claims:
1. Anker (10) zum Betätigen des Auslösestößels (14) von Ma¬ gnetauslösern (1) für Schutzschalter, der ein zu einer Hülse geformter Blechstreifen ist, und einen Anschlag (11) für das Mitnehmen des Auslösestößels (14) aufweist, da¬ durch gekennzeichnet, daß die parallel zur Achse des An¬ kers (10) ausgerichteten Ränder (20) des Blechstreifens wenigstens bereichsweise dicht aneinander liegen und daß der Anschlag für den Auslösestößel (14) wenigstens eine mit dem Anker (10) einstückig ausgebildete, quer zur Achse des Ankers (10) ausgerichtete Zunge (12) ist.1. Armature (10) for actuating the trigger plunger (14) of magnetic triggers (1) for circuit breakers, which is a sheet-metal strip formed into a sleeve, and a stop (11) for taking the trigger plunger (14) with it, that characterized in that the edges (20) of the sheet metal strip aligned parallel to the axis of the armature (10) lie at least in regions close to one another and that the stop for the trigger plunger (14) has at least one piece formed integrally with the armature (10), transverse to the The axis of the armature (10) is aligned tongue (12).
2. Anker nach Anspruch 1, dadurch gekennzeichnet, daß der Blechstreifen zu einer Hülse mit kreisringförmiger Quer- schnittsform gerollt ist.2. Anchor according to claim 1, characterized in that the sheet metal strip is rolled into a sleeve with an annular cross-sectional shape.
3. Anker nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Zunge (12) mit der Wand des Ankers (1) einen rechten Winkel einschließt und nach innen abgebogen ist.3. Anchor according to claim 1 or 2, characterized in that the tongue (12) with the wall of the anchor (1) encloses a right angle and is bent inwards.
4. Anker nach einem der Ansprüche 1 bis 3, dadurch gekenn¬ zeichnet, daß die in der Wand des Ankers (10) liegende Wurzel (25) der Zunge (12) durch Ausschnitte (26) beid¬ seitig freigeschnitten ist.4. Anchor according to one of claims 1 to 3, characterized gekenn¬ characterized in that in the wall of the anchor (10) lying root (25) of the tongue (12) is cut out on both sides by cutouts (26).
5. Anker nach einem der Ansprüche 1 bis 4, dadurch gekenn¬ zeichnet, daß die Zunge (12) innerhalb der der Zunge (12) benachbarten Endfläche (27) der den Anker (10) bildenden Hülse angeordnet ist.5. Anchor according to one of claims 1 to 4, characterized gekenn¬ characterized in that the tongue (12) within the tongue (12) adjacent end surface (27) of the armature (10) forming the sleeve is arranged.
6. Anker nach Anspruch 5, dadurch gekennzeichnet, daß die Au¬ ßenfläche der Zunge (12) mit der ihr benachbarten Endflä¬ che (27) des Ankers (10) fluchtet.6. Anchor according to claim 5, characterized in that the outer surface of the tongue (12) is flush with its adjacent end face (27) of the armature (10).
7. Anker nach einem der Ansprüche 1 bis 6, dadurch gekenn¬ zeichnet, daß die Ränder (20) des zum Anker (10) geformten Blechstreifens im Bereich der Stoßstelle (21) des Ankers (10) flächig aneinanderliegen (Fig. 6). 7. Anchor according to one of claims 1 to 6, characterized gekenn¬ characterized in that the edges (20) of the armature (10) formed sheet metal strip in the region of the joint (21) of the armature (10) lie flat against each other (Fig. 6).
8. Anker nach Anspruch 7, dadurch gekennzeichnet, daß die Schmalflächen des Blechstreifens im Bereich der Ränder (20) bei noch ebenem Blechstreifen zur Ebene des Blech¬ streifens schräg ausgerichtet sind.8. Anchor according to claim 7, characterized in that the narrow surfaces of the sheet metal strip in the region of the edges (20) are aligned obliquely to the plane of the sheet metal strip while the sheet metal strip is still flat.
9. Anker nach einem der Ansprüche 1 bis 6, dadurch gekenn¬ zeichnet, daß die Ränder (20) des zum Anker (10) geformten Blechstreifens im Bereich der Stoßstelle (21) des Ankers (10) mit ihren Innenkanten (28) aneinander anliegen (Fig. 7).9. Anchor according to one of claims 1 to 6, characterized gekenn¬ characterized in that the edges (20) of the armature (10) formed sheet metal strip in the region of the joint (21) of the anchor (10) with their inner edges (28) abut each other (Fig. 7).
10. Anker nach Anspsruch 9, dadurch gekennzeichnet, daß die Schmalflächen des Blechstreifens im Bereich der Ränder (20) bei noch ebenem Blechstreifen zur Ebene des Blech- Streifens normal ausgerichtet sind.10. Anchor according to Anspsruch 9, characterized in that the narrow surfaces of the sheet metal strip in the region of the edges (20) are aligned with the sheet metal strip to the plane of the sheet metal strip while the sheet metal strip is still flat.
11. Anker nach einem der Ansprüche 1 bis 10, dadurch gekenn¬ zeichnet, daß der Anker (10) aus einem weichmagnetischen Werkstoff mit einer magnetischen Sättigung von 1,64 bis 2,0 T, vorzugsweise 1,6 T, bei einer Feldstärke von 4000 A/m besteht.11. Anchor according to one of claims 1 to 10, characterized gekenn¬ characterized in that the armature (10) made of a soft magnetic material with a magnetic saturation of 1.64 to 2.0 T, preferably 1.6 T, with a field strength of 4000 A / m exists.
12. Anker nach einem der Ansprüche 1 bis 11, dadurch gekenn¬ zeichnet, daß der Anker (10) aus dem Werkstoff RFe 80 gemäß DIN 17 405 besteht. 12. Anchor according to one of claims 1 to 11, characterized gekenn¬ characterized in that the anchor (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
AT0211195A AT410858B (en) 1995-12-28 1995-12-28 ANCHOR FOR MAGNETIC TRIGGER
AT211195 1995-12-28
AT2111/95 1995-12-28
PCT/AT1996/000252 WO1997024746A1 (en) 1995-12-28 1996-12-18 Armature for magnetic trigger mechanism

Publications (2)

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

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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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9724746A1 *

Also Published As

Publication number Publication date
PL181900B1 (en) 2001-10-31
HUP9901164A2 (en) 1999-07-28
ES2139395T3 (en) 2000-02-01
AU713111B2 (en) 1999-11-25
SK88698A3 (en) 1999-10-08
AT410858B (en) 2003-08-25
ATA211195A (en) 2002-12-15
GR3032197T3 (en) 2000-04-27
EP0870315B1 (en) 1999-09-29
CZ287121B6 (en) 2000-09-13
AU1132197A (en) 1997-07-28
ATE185219T1 (en) 1999-10-15
SK285089B6 (en) 2006-06-01
HU222336B1 (en) 2003-06-28
DE59603247D1 (en) 1999-11-04
NO982912D0 (en) 1998-06-22
WO1997024746A1 (en) 1997-07-10
CZ199398A3 (en) 1998-12-16
NO312147B1 (en) 2002-03-25
PL327232A1 (en) 1998-12-07
HUP9901164A3 (en) 1999-11-29
NO982912L (en) 1998-08-21

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