EP0120422A2 - Magnetic release - Google Patents

Magnetic release Download PDF

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Publication number
EP0120422A2
EP0120422A2 EP84102918A EP84102918A EP0120422A2 EP 0120422 A2 EP0120422 A2 EP 0120422A2 EP 84102918 A EP84102918 A EP 84102918A EP 84102918 A EP84102918 A EP 84102918A EP 0120422 A2 EP0120422 A2 EP 0120422A2
Authority
EP
European Patent Office
Prior art keywords
magnetic
coil body
armature
magnetic core
core
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.)
Withdrawn
Application number
EP84102918A
Other languages
German (de)
French (fr)
Other versions
EP0120422A3 (en
Inventor
Rolf Goehle
Volker Schmitt
Erwin Muders
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri AG Germany
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Publication of EP0120422A2 publication Critical patent/EP0120422A2/en
Publication of EP0120422A3 publication Critical patent/EP0120422A3/en
Withdrawn legal-status Critical Current

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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
    • 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
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements

Definitions

  • the invention relates to a magnetic release for an electrical installation device, in particular for a circuit breaker, with a magnetic core, a magnet armature interacting with it, a coil body receiving the winding, which comprises the magnetic core and the magnet armature, and with a magnet yoke.
  • Magnetic triggers of this type which are preferably used in line circuit breakers and serve there both for opening the movable contact lever and for triggering the switch lock in the event of a short circuit, have become known, for example, from DE-OS 25 31 215.
  • the coil former is designed as a plastic part that is closed on one side except for an opening for the passage of the impact anchor and is completely open on the other side. On the closed side radially outward projections are provided, with which the coil body can be locked on the magnetic yoke.
  • the assembly is as far as it is relatively complicated, since the magnetic yoke together with the magnetic core, the magnet armature, the coil body and the spring does not form a coherent unit, but consists of individual, loose parts that become their unit only when they are mounted on the magnetic yoke. The individual parts can easily be lost during assembly.
  • the magnetic yoke consists of two parts that have to be connected together to hold the magnetic armature and magnetic core.
  • the assembly of the arrangement is similar to that in DE-OS 25 31 215 in that it is complicated in that the coil body together with the magnetic core and the magnetic yoke form an associated unit.
  • the object of the invention is to create a trigger with a few parts as a complete unit with low tolerance of the air gap, in which the assembly is significantly simplified.
  • the tubular coil body has at least one radially inwardly projecting tab on its two end faces, against which the magnet armature and the magnet core is pressed by means of a spring located between the two.
  • the coil form, the armature, the magnetic core and the between the two located spring is a structural unit, the parts of which are captive before final assembly and the attachment of the arrangement to the magnetic yoke, in which the coil body holds the parts located inside due to its tabs.
  • Another embodiment of the invention can be that the magnetic core partially protrudes from the coil body; this protruding area can then be used to attach the magnetic core and thus the coil body with the magnetic armature to the magnetic yoke e.g. serve by riveting.
  • the coil former designed as a coil tube, is made of non-magnetic material and can be bent from sheet metal.
  • the coil tube can additionally be coated with an insulating plastic (e.g. polyester) at least on its outer surface.
  • the tabs would be resiliently molded onto the coil body in such a way that when the magnetic core and armature are inserted, they are bent open, snap back again after completion of the assembly process and hold the parts inside the coil body.
  • the tabs can also spring; in general they are before Assembly bent and be. after the assembly of the magnetic armature and core has been plastically bent inwards.
  • the magnetic release according to Figure 1 is installed in a circuit breaker, as is customary in the trade. It generally serves as a magnetic release for short-circuit release.
  • the magnetic release which has the overall reference number 10 and is shown in the assembled state in FIG. 1, has a coil former 11 which is tubular and is provided with radially inwardly projecting tabs 12 and 13 on its two ends. Inside the coil body is a magnetic core 14, which has at one end a recess 15, the outer diameter of which corresponds to the distance between the two facing tabs 13, so that the magnetic core 14 with this recess from the coil body 11, the space between the penetrating both tabs 13, protrudes. On the recess 15, a projection 16 is provided, the function of which is explained below.
  • a magnet armature 17 cooperates with the magnet core 14, the outside diameter of which is adapted in the same way as the outside diameter of the magnet core 14 inside the coil body to the inside diameter of the coil body 11 and is greater than the distance between the opposing tabs 12, so that the magnet armature in the assembled state 17 cannot fall out of the bobbin 11 to the right.
  • the same also applies to the magnetic core 14 with respect to the tabs 14.
  • a recess 18 and 19 is provided on each of the two opposite end faces of the magnetic core 14 and magnetic armature 17, which are used to receive a helical spring 20 and to guide it.
  • a release rod 21 which protrudes through a bore 22 of the magnet core 14 on the left side from the magnet armature and ends in a thickening 23.
  • a pin 24 is formed, which has a plate-shaped extension 25 at its free end. The latter extension engages behind a contact lever on which the movable contact piece of the circuit breaker is fastened, in which the magnetic release 10 is inserted.
  • the magnetic release also has a yoke 26 which is approximately U-shaped with two legs 28 and 29 arranged perpendicular to a web 27.
  • the leg 28 has a through opening 30 through which the extension 16 of the magnetic core 14 passes can be; after the extension 16 has been pushed through, the extension is riveted at 31 to the leg 28.
  • the other leg 29 has an opening 32 through which the coil body 11 protrudes, such that the leg 29 surrounds the magnet armature 17, and indeed its distance from the leg 28 is selected so that the leg 29 continuously encompasses the magnet armature 17, that is to say also then , if, in the event of tripping, the two opposite end faces of the magnet armature and magnet core touch.
  • a winding 33 is arranged around the coil former.
  • Figure 2 shows the bobbin 11 before assembly.
  • the coil body 11 is bent from a sheet metal part made of non-magnetic special material;
  • the parting line 35 can be seen in FIG. 2.
  • the sheet metal part is provided with the tabs 12 and 13 from the front and during the bending process or afterwards the tabs 13 are already bent inwards in the form of an L-shaped extension.
  • the two opposite tabs 12 are L-shaped in the same way as the tabs 13, but are bent outwards before assembly, such that the inside diameter of the opposite tab ends in the period before assembly is at least not less than the inside diameter of the Bobbin 11.
  • the magnetic core is first inserted in such a way that the recess 15 comes to lie between the opposing tabs 13. Then the spring is inserted and the magnetic core 17 in such a way that the spring 20 can engage both in the recess 18 on the magnetic core 14 and in the recess 19 on the armature 17. Then ⁇ the two tabs 12 are bent back to one another so that the position of the tabs 12 shown in FIG. 1 is reached, in which the magnet armature 17 is prevented from falling out of the inside of the coil body because the distance between the tab ends is smaller than the magnet armature diameter.
  • the unit of magnetic core, armature, compression spring and coil body is now formed; the unit no longer consists of several individual parts that can be lost, but rather the unit can be fed to a further assembly step for assembling the entire circuit breaker.
  • This next step consists in that the extension 16 of the magnetic core is inserted through the recess 30 of the yoke or leg and then riveted at 31. Then the rod 21 is still inserted. This completes the entire assembly of the magnetic release with magnetic yoke.
  • the magnet armature 17 is pulled against the pressure of the spring 20 against the magnetic core 14, the armature pulling the extension lever 25 (not shown) of the circuit breaker into the switched-off position.
  • the switch lock of the circuit breaker also not shown, is unlocked via the release pin 21, 23. While the magnet armature 17 automatically returns to the ready-to-release position due to the spring 20, the rod is moved from the switch lock to the ready-to-release position during the manual switch-on process, i.e. pressed inwards against the bottom of the recess 19 in the magnet armature 17.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)
  • Impact Printers (AREA)

Abstract

A magnetic release consists of a magnetic armature (17), a magnetic core (14), a spring (20), arranged between the magnetic armature and core and pressing them apart, and a coil former (11). To simplify the installation, the coil former (11) is bent from a sheet part of non- magnetic material and has straps (12, 13) facing one another on both its end faces, the distance between the straps being smaller than the external diameter of the magnetic armature and magnetic core. The two straps (12 and 13) secure the parts located inside the coil former, so that the coil former and the parts located therein form a unit whose individual parts cannot be lost. <IMAGE>

Description

Die Erfindung betrifft einen Magnetauslöser für ein elektrisches Installationsgerät, insbesondere für einen Leitungsschutzschalter, mit einem Magnetkern, einem mit diesem zusammenwirkenden Magnetanker, einem eine Wicklung aufnehmenden Spulenkörper, der den Magnetkern und den Magnetanker umfaßt, und mit einem Magnetjoch.The invention relates to a magnetic release for an electrical installation device, in particular for a circuit breaker, with a magnetic core, a magnet armature interacting with it, a coil body receiving the winding, which comprises the magnetic core and the magnet armature, and with a magnet yoke.

Derartige Magnetauslöser, die bevorzugt bei Leitungsschutzschaltern eingesetzt werden und dort sowohl zum Aufschlagen des beweglichen Kontakthebels als auch zum Auslösen des Schaltschlosses bei einem Kurzschluß dienen, sind zum Beispiel aus der DE-OS 25 31 215 bekanntgeworden. Der Spulenkörper ist dabei als Kunststoffteil ausgebildet, das an einer Seite bis auf eine Öffnung zum Durchtritt des Schlagankers geschlossen und nach der anderen Seite hin vollständig offen ist. An der geschlossenen Seite sind radial nach außen verlaufende Vorsprünge vorgesehen, mit denen der Spulenkörper am Magnetjoch festgerastet werden kann. Die Montage ist insoweit verhältnismäßig kompliziert, als das Magnetjoch zusammen mit dem Magnetkern, dem Magnetanker, dem Spulenkörper und der Feder keine zusammenhängende Einheit bildet, sondern aus einzelnen, losen Teilen besteht, die zu ihrer Einheit erst im am Magnetjoch montierten Zustand werden. Die einzelnen Teile können bei der Montage ohne weiteres verloren gehen.Magnetic triggers of this type, which are preferably used in line circuit breakers and serve there both for opening the movable contact lever and for triggering the switch lock in the event of a short circuit, have become known, for example, from DE-OS 25 31 215. The coil former is designed as a plastic part that is closed on one side except for an opening for the passage of the impact anchor and is completely open on the other side. On the closed side radially outward projections are provided, with which the coil body can be locked on the magnetic yoke. The assembly is as far as it is relatively complicated, since the magnetic yoke together with the magnetic core, the magnet armature, the coil body and the spring does not form a coherent unit, but consists of individual, loose parts that become their unit only when they are mounted on the magnetic yoke. The individual parts can easily be lost during assembly.

Ein weiterer Magnetauslöser ist aus dem der AT-PS 291 277 bekanntgeworden. Dabei besteht das Magnetjoch aus zwei Teilen, die miteinander zur Halterung von Magnetanker und Magnetkern verbunden werden müssen. Die Montage der Anordnung ist in ähnlicher Weise wie diejenige bei der DE-OS 25 31 215 insoweit kompliziert, als der Spulenkörper zusammen mit dem Magnetkern und dem Magnetjoch eine zusammengehörige Einheit bildet.Another magnetic release has become known from AT-PS 291 277. The magnetic yoke consists of two parts that have to be connected together to hold the magnetic armature and magnetic core. The assembly of the arrangement is similar to that in DE-OS 25 31 215 in that it is complicated in that the coil body together with the magnetic core and the magnetic yoke form an associated unit.

Bei diesen bekannten Ausführungen wird also der Magnetanker nur lose eingesetzt, so daß er vor dem Einbau verlierbar ist.In these known designs, the magnet armature is only used loosely, so that it can be lost before installation.

Aufgabe der Erfindung ist es, mit wenigen Teilen einen Auslöser als komplette Einheit mit geringer Toleranz des Luftspaltes zu schaffen, bei dem die Montage wesentlich vereinfacht ist.The object of the invention is to create a trigger with a few parts as a complete unit with low tolerance of the air gap, in which the assembly is significantly simplified.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der rohrförmig ausgebildete Spulenkörper an seinen beiden Stirnseiten je wenigstens eine radial nach innen ragende Lasche aufweist, gegen die der Magnetanker und der Magnetkern mittels einer zwischen beiden befindlichen Feder angedrückt ist.This object is achieved in that the tubular coil body has at least one radially inwardly projecting tab on its two end faces, against which the magnet armature and the magnet core is pressed by means of a spring located between the two.

Bei dieser Ausführung bilden der Spulenkörper, der Magnetanker, der Magnetkern und die zwischen beiden befindliche Feder eine bauliche Einheit, deren Teile vor der Endmontage und der Befestigung der Anorndung am Magnetjoch unverlierbar sind, in dem nämlich der Spulenkörper aufgrund seiner Laschen die in seinem Inneren befindlichen Teile zusammenhält.In this embodiment, the coil form, the armature, the magnetic core and the between the two located spring is a structural unit, the parts of which are captive before final assembly and the attachment of the arrangement to the magnetic yoke, in which the coil body holds the parts located inside due to its tabs.

Eine weitere Ausgestaltung der Erfindung kann dahingehen, daß der Magnetkern teilweise aus dem Spulenkörper herausragt; dieser herausragende Bereich kann dann zur Befestigung des Magnetkern und damit des Spulenkörpers mit dem Magnetanker am Magnetjoch z.B. durch Vernietung dienen.Another embodiment of the invention can be that the magnetic core partially protrudes from the coil body; this protruding area can then be used to attach the magnetic core and thus the coil body with the magnetic armature to the magnetic yoke e.g. serve by riveting.

In an sich bekannter Weise befindet sich in den sich gegenüberliegenden Stirnflächen des Magnetankers und des Magnetkerns je eine Vertiefung, in die die als Schraubenfeder ausgebildete Feder eingreift und darin geführt ist.In a manner known per se, there is a depression in each of the opposing end faces of the magnet armature and the magnet core, into which the spring designed as a helical spring engages and is guided therein.

Der Spulenkörper, als Spulenrohr ausgebildete ist aus nichtmagnetischem Material hergestellt und kann aus Blech gebogen sein. Dabei kann das Spulenrohr zusätzlich zumindest auf seiner Außenfläche mit einem isolierenden Kunststoff (z.B. Polyester) beschichtet sein.The coil former, designed as a coil tube, is made of non-magnetic material and can be bent from sheet metal. The coil tube can additionally be coated with an insulating plastic (e.g. polyester) at least on its outer surface.

Es besteht natürlich auch die Möglichkeit, den Spulenkörper aus Kunststoff herzustellen. Dann wären die Laschen federnd aufbiegbar am Spulenkörper angeformt, derart, daß sie beim Einsetzen von Magnetkern und -anker federnd aufgebogen werden, nach Beendigung des Montagevorganges wieder zurückschnappen und die Teile im Inneren des Spulenkörpers festhalten.Of course, there is also the possibility of producing the coil former from plastic. Then the tabs would be resiliently molded onto the coil body in such a way that when the magnetic core and armature are inserted, they are bent open, snap back again after completion of the assembly process and hold the parts inside the coil body.

Wird der Spulenkörper am Blech gebildet, können die Laschen zwar auch federn; im allgemeinen sind sie vor Montage aufgebogen und werden . nach Beendigung der Montage von Magnetanker und -kern plastisch nach innen gebogen.If the coil former is formed on the sheet metal, the tabs can also spring; in general they are before Assembly bent and be. after the assembly of the magnetic armature and core has been plastically bent inwards.

Anhand der Zeichnung, in der ein Ausführungsbeispiel der Erfindung dargestellt ist, soll die Erfindung näher erläutert und beschrieben werden.The invention will be explained and described in more detail with reference to the drawing, in which an embodiment of the invention is shown.

Es zeigt:

  • Fig. 1 einen Längsschnitt durch einen erfindungsgemäßen Magnetauslöser,
  • Fig. 2 eine Längsschnittansicht des Spulenkörpers vor Montage und
  • Fig. 3 eine Seitenansicht gemäß Pfeilrichtung A der Fig. 2.
It shows:
  • 1 shows a longitudinal section through a magnetic release according to the invention,
  • Fig. 2 is a longitudinal sectional view of the bobbin before assembly and
  • 3 shows a side view according to arrow direction A of FIG. 2.

Der Magnetauslöser gemäß Figur 1 ist in einen Leitungsschutzschalter eingebaut, wie er handelsüblich ist. Er dient dort im allgemeinen als Magnetauslöser für Kurzschlußauslösung.The magnetic release according to Figure 1 is installed in a circuit breaker, as is customary in the trade. It generally serves as a magnetic release for short-circuit release.

Der Magnetauslöser, der insgesamt die Bezugsziffer 10 aufweist und in Fig. 1 in montiertem Zustand-gezeigt ist, besitzt einen Spulenkörper 11, der rohrförmig ausgebildet ist und an seinen beiden Stirnenden mit radial nach innen vorspringenden Laschen 12 und 13 versehen ist. Im Inneren des Spulenkörpers befindet sich ein Magnetkern 14, der an seinem einen Ende einen Rücksprung 15 aufweist, dessen Außendurchmesser dem Abstand der beiden aufeinander zuweisenden Laschen 13 entspricht, so daß der Magnetkern 14 mit diesem Rücksprung aus dem Spulenkörper 11, den Zwischenraum zwischen den beiden Laschen 13 durchdringend, herausragt. An dem Rücksprung 15 ist ein Vorsprung 16 vorgesehen, dessen Funktion weiter unten erläutert ist.The magnetic release, which has the overall reference number 10 and is shown in the assembled state in FIG. 1, has a coil former 11 which is tubular and is provided with radially inwardly projecting tabs 12 and 13 on its two ends. Inside the coil body is a magnetic core 14, which has at one end a recess 15, the outer diameter of which corresponds to the distance between the two facing tabs 13, so that the magnetic core 14 with this recess from the coil body 11, the space between the penetrating both tabs 13, protrudes. On the recess 15, a projection 16 is provided, the function of which is explained below.

Mit dem Magnetkern 14 wirkt ein Magnetanker 17 zusammen, dessen Außendurchmesser in gleicher Weise wie der Außendurchmesser des Magnetkernes 14 im Inneren des Spulenkörpers dem Innendurchmesser des Spulenkörpers 11 angepaßt und größer ist als der Abstand der sich gegenüberliegenden Laschen 12, so daß im montierten Zustand der Magnetanker 17 nach rechts nicht aus dem Spulenkörper 11 herausfallen kann. Das gleiche gilt auch für den Magnetkern 14 in Bezug auf die Laschen 14.A magnet armature 17 cooperates with the magnet core 14, the outside diameter of which is adapted in the same way as the outside diameter of the magnet core 14 inside the coil body to the inside diameter of the coil body 11 and is greater than the distance between the opposing tabs 12, so that the magnet armature in the assembled state 17 cannot fall out of the bobbin 11 to the right. The same also applies to the magnetic core 14 with respect to the tabs 14.

An den beiden sich gegenüberliegenden Stirnflächen von Magnetkern 14 und Magnetanker 17 ist je eine Vertiefung 18 und 19 vorgesehen, die zur Aufnahme einer Schraubenfeder 20 und zu ihrer Führung dienen. Am Boden der Vertiefung 19 im Magnetanker liegt eine Auslösestange 21 an, die durch eine Bohrung 22 des Magnetkerns 14 auf der linken Seite aus dem Magnetanker herausragt und in einer Verdickung 23 endet. Auf der rechten Stirnseite, also derjenigen Stirnseite, die der entgegengesetzt liegt, die die Ausnehmung oder Vertiefung 19 aufweist, ist ein Zapfen 24 angeformt, der eine tellerförmige Erweiterung 25 an seinem freien Ende aufweist. Letztere Erweiterung hintergreift einen Kontakthebel, an dem das bewegliche Kontaktstück des Leistungsschalters befestigt ist, in den der Magnetauslöser 10 eingesetzt ist.A recess 18 and 19 is provided on each of the two opposite end faces of the magnetic core 14 and magnetic armature 17, which are used to receive a helical spring 20 and to guide it. At the bottom of the recess 19 in the magnet armature there is a release rod 21 which protrudes through a bore 22 of the magnet core 14 on the left side from the magnet armature and ends in a thickening 23. On the right-hand end face, that is to say the end face lying opposite that which has the recess or depression 19, a pin 24 is formed, which has a plate-shaped extension 25 at its free end. The latter extension engages behind a contact lever on which the movable contact piece of the circuit breaker is fastened, in which the magnetic release 10 is inserted.

Der Magnetauslöser besitzt ferner ein Joch 26, das annähernd U-förmig mit zwei senkrecht zu einem Steg 27 angeordneten Schenkeln 28 und 29 ausgebildet ist. Der Schenkel 28 besitzt eine Durchgangsöffnung 30, durch die Der Fortsatz 16 des Magnetkerns 14 hindurchgesteckt werden kann; nach dem Durchstecken des Fortsatzes 16 wird der Fortsatz bei 31 mit dem Schenkel 28 vernietet.The magnetic release also has a yoke 26 which is approximately U-shaped with two legs 28 and 29 arranged perpendicular to a web 27. The leg 28 has a through opening 30 through which the extension 16 of the magnetic core 14 passes can be; after the extension 16 has been pushed through, the extension is riveted at 31 to the leg 28.

Der andere Schenkel 29 besitzt eine Öffnung 32, durch die der Spulenkörper 11 hindurchragt, dergestalt, daß der Schenkel 29 den Magnetanker 17 umgibtund zwar ist sein Abstand von dem Schenkel 28 so gewählt, daß der Schenkel 29 den Magnetanker 17 dauernd umfaßt, also auch dann, wenn im Falle einer Auslösung die beiden sich gegenüberliegenden Stirnflächen von Magnetanker und Magnetkern sich berühren. Um den Spulenkörper herum ist ein Wicklung 33 angeordnet.The other leg 29 has an opening 32 through which the coil body 11 protrudes, such that the leg 29 surrounds the magnet armature 17, and indeed its distance from the leg 28 is selected so that the leg 29 continuously encompasses the magnet armature 17, that is to say also then , if, in the event of tripping, the two opposite end faces of the magnet armature and magnet core touch. A winding 33 is arranged around the coil former.

Die Figur 2 zeigt den Spulenkörper 11 vor der Montage. Der Spulenkörper 11 ist aus einem Blechteil aus nichtmagnetischem Spezialmaterial gebogen; man erkennt die Trennfuge 35 in der Figur 2. Das Blechteil ist schon von vorne herein mit den Laschen 12 und 13 versehen und während des Biegevorganges oder auch danach sind die Laschen 13 in Form eines L-förmigen Fortsatzes schon nach innen gebogen. Die beiden sich gegenüberliegenden Laschen 12 sind in gleicher Weise wie die Laschen 13 L-förmig ausgebildet, sind aber vor der Montage noch nach außen aufgebogen, dergestalt, daß der Innendurchmesser der sich gegenüberliegenden Laschenenden im Zeitraum vor Montage zumindest nicht kleiner ist als der Innendurchmesser des Spulenkörpers 11.Figure 2 shows the bobbin 11 before assembly. The coil body 11 is bent from a sheet metal part made of non-magnetic special material; The parting line 35 can be seen in FIG. 2. The sheet metal part is provided with the tabs 12 and 13 from the front and during the bending process or afterwards the tabs 13 are already bent inwards in the form of an L-shaped extension. The two opposite tabs 12 are L-shaped in the same way as the tabs 13, but are bent outwards before assembly, such that the inside diameter of the opposite tab ends in the period before assembly is at least not less than the inside diameter of the Bobbin 11.

Zur Montage der Einheit wird zunächst der Magnetkern eingeführt und zwar dergestalt, daß der Rücksprung 15 zwischen den sich gegenüberstehenden Laschen 13 zu liegen kommt. Danach wird die Feder eingesetzt und der Magnetkern 17, und zwar derart, daß die Feder 20 sowohl in die Vertiefung 18 am Magnetkern 14 als auch in die Vertiefung 19 am Magnetanker 17 eingreifen kann. Sodann \ werden die beiden Laschen 12 zueinander zurückgebogen, so daß die in der Figur 1 gezeichnete Stellung der Laschen 12 erreicht wird, in der der Magnetanker 17 am Herausfallen aus dem Innern des Spulenkörpers gehindert wird, weil der Abstand der Laschenenden kleiner ist als der Magnetankerdurchmesser. Im Endeffekt ist nunmehr die Einheit von Magnetkern, Magnetanker, Druckfeder und Spulenkörper gebildet; die Einheit besteht nicht mehr aus mehreren Einzelteilen, die verlorengehen können, sondern vielmehr kann die Einheit einem weiteren Montageschritt zum Zusammenbau des gesamten Leitungsschutzschalters zugeführt werden. Dieser nächste Schritt besteht darin, daß der Fortsatz 16 des Magnetkerns durch die Ausnehmung 30 des Jochs bzw. des Schenkels hindurchgesteckt und dann bei 31 vernietet wird. Danach wird noch die Stange 21 eingesetzt. Damit ist die gesamte Montage des Magnetauslösers mit Magnetjoch beendet.To assemble the unit, the magnetic core is first inserted in such a way that the recess 15 comes to lie between the opposing tabs 13. Then the spring is inserted and the magnetic core 17 in such a way that the spring 20 can engage both in the recess 18 on the magnetic core 14 and in the recess 19 on the armature 17. Then \ the two tabs 12 are bent back to one another so that the position of the tabs 12 shown in FIG. 1 is reached, in which the magnet armature 17 is prevented from falling out of the inside of the coil body because the distance between the tab ends is smaller than the magnet armature diameter. In the end, the unit of magnetic core, armature, compression spring and coil body is now formed; the unit no longer consists of several individual parts that can be lost, but rather the unit can be fed to a further assembly step for assembling the entire circuit breaker. This next step consists in that the extension 16 of the magnetic core is inserted through the recess 30 of the yoke or leg and then riveted at 31. Then the rod 21 is still inserted. This completes the entire assembly of the magnetic release with magnetic yoke.

Im Schaltvorgang wird der Magnetanker 17 gegen den Druck der Feder 20 gegen Magnetkern 14 gezogen, wobei der Anker über die Erweiterung 25 den (nicht gezeichneten) Kontakthebel des Leitungsschutzschalters in Ausschaltstellung zieht. Gleichzeitig wird über den Auslösestift 21, 23 das ebenfalls nicht gezeigte Schaltschloß des Leitungsschutzschalters entriegelt. Während der Magnetanker 17 aufgrund der Feder 20 von selbst in auslösebereite Stellung zurückgeht, wird die Stange beim manuellen Einschaltvorgang vom Schaltschloß in auslösebereite Stellung verbracht, d.h. nach innen gegen den Boden der Vertiefung 19 im Magnetanker 17 gedrückt.In the switching process, the magnet armature 17 is pulled against the pressure of the spring 20 against the magnetic core 14, the armature pulling the extension lever 25 (not shown) of the circuit breaker into the switched-off position. At the same time, the switch lock of the circuit breaker, also not shown, is unlocked via the release pin 21, 23. While the magnet armature 17 automatically returns to the ready-to-release position due to the spring 20, the rod is moved from the switch lock to the ready-to-release position during the manual switch-on process, i.e. pressed inwards against the bottom of the recess 19 in the magnet armature 17.

Claims (7)

1. Magnetauslöser für ein elektrisches Installationsgerät, insbesondere für einen Leitungsschutzschalter, mit einem Magnetkern, einem mit dem Magnetkern zusammenwirkenden Magnetanker, einem Magnetjoch und einem eine Wicklung aufnehmenden Spulenkörper, der den Magnetanker und den Magnetkern umfaßt, dadurch gekennzeichnet, daß der rohrförmig ausgebildete Spulenkörper (11) an seinen beiden Stirnenden je wenigstens eine radial nach innen ragende Lasche (12, 13) aufweist, gegen die der Magnetkern.(14) und der Magnetanker (17) mittels einer zwischen beiden befindlichen Feder (20) gedrückt ist, wobei die beiden Laschen (12 und 13) den Magnetanker, den Magnetkern und die Feder zwischen sich nehmen und unverlierbar halten.1.Magnetic release for an electrical installation device, in particular for a circuit breaker, with a magnetic core, a magnetic armature interacting with the magnetic core, a magnetic yoke and a coil body receiving the winding, which comprises the magnetic armature and the magnetic core, characterized in that the tubular coil body ( 11) has at least one radially inwardly projecting tab (12, 13) on each of its two ends, against which the magnetic core (14) and the magnetic armature (17) are pressed by means of a spring (20) located between the two, the two Take the tabs (12 and 13) the magnet armature, the magnet core and the spring between them and hold them captively. 2. Magnetauslöser nach Anspruch 1, dadurch gekennzeichnet, daß der Magnetkern (14) teilweise aus dem Spulenkörper herausragt, wobei dieser herausragende Bereich (16) zur Befestigung des Magnetkerns und damit des Spulenkörpers (11) mit Magnetkern (14) und Magnetanker (17) dient, z.b. zur Vernietung dieses Bereiches am Magnetjoch (26).2. Magnetic release according to claim 1, characterized in that the magnetic core (14) partially protrudes from the coil body, this projecting region (16) for fastening the magnetic core and thus the coil body (11) with magnetic core (14) and magnet armature (17) serves, e.g. for riveting this area on the Magnetjoch (26). 3. Magnetauslöser nach einem der vorigen Ansprüche, dadurcha gekennzeichnet, daß in den sich gegenüberliegenden Stirnflächen des Magnetankers (17) und des Magnetkerns (14) je eine Vertiefung (19, 18) vorgesehen ist, in die die als Schraubenfeder ausgebildete Feder (20) eingreift und darin geführt ist.3. Magnetic release according to one of the preceding claims, characterized in that in each of the opposite end faces of the magnet armature (17) and the magnetic core (14) a recess (19, 18) is provided, in which the spring (20) designed as a helical spring intervenes and is guided therein. 4. Magnetauslöser nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß der Spulenkörper (11) aus nicht magnetischem Material besteht.4. Magnetic release according to one of the preceding claims, characterized in that the coil body (11) consists of non-magnetic material. 5. Magnetauslöser nach Anspruch 4, dadurch gekennzeichnet, daß der Spulenkörper (11) aus einem Blechteil gebogen ist.5. Magnetic release according to claim 4, characterized in that the coil body (11) is bent from a sheet metal part. 6. Magnetauslöser nach einem der vorigen Ansprüche, dadurch gekennzeichnet, daß der Spulenkörper (11) zumindest auf seiner Außenfläche mit einem isolierenden Kunststoff, z.B. Polyester, beschichtet ist.6. Magnetic release according to one of the preceding claims, characterized in that the coil body (11) at least on its outer surface with an insulating plastic, e.g. Polyester, is coated. 7. Magnetauslöser nach Anspruch 6, dadurch gekennzeichnet, daß der Spulenkörper (11) aus Kunststoff besteht, und daß die Laschen (12, 13) federnd ausgebildet und an dem Spulenkörper (11) angeformt sind.7. Magnetic release according to claim 6, characterized in that the coil body (11) consists of plastic, and that the tabs (12, 13) are resilient and are integrally formed on the coil body (11).
EP84102918A 1983-03-25 1984-03-16 Magnetic release Withdrawn EP0120422A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3310914 1983-03-25
DE19833310914 DE3310914A1 (en) 1983-03-25 1983-03-25 MAGNETIC RELEASE

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EP0120422A2 true EP0120422A2 (en) 1984-10-03
EP0120422A3 EP0120422A3 (en) 1985-05-29

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199980A2 (en) * 1985-04-30 1986-11-05 Asea Brown Boveri Aktiengesellschaft Magnetic trip device
WO1997024746A1 (en) * 1995-12-28 1997-07-10 Felten & Guilleaume Austria Ag Armature for magnetic trigger mechanism
WO1997048113A1 (en) * 1996-06-14 1997-12-18 Enpece Sigma Ab A switch arrangement and method for mounting the same
WO2000021109A1 (en) * 1998-10-02 2000-04-13 Aeg Niederspannungstechnik Gmbh & Co. Kg Magnetic system
DE19952180A1 (en) * 1999-10-29 2001-05-03 Moeller Gmbh Electrical protection switching device
EP1981051A3 (en) * 2007-04-09 2010-04-14 EATON Corporation Electromagnetic coil apparatus employing a magnetic flux enhancer, and accessory and electrical switching apparatus employing the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3619239A1 (en) * 1986-06-07 1987-12-10 Kloeckner Moeller Elektrizit Rapid-action tripping device for line protection circuit breakers
DE3908350A1 (en) * 1989-03-15 1990-09-20 Asea Brown Boveri Electrical coil
DE19952178A1 (en) * 1999-10-29 2001-05-03 Moeller Gmbh Electrical protection switching device
DE102012014670B4 (en) * 2012-07-25 2014-05-22 Abb Ag Magnet system and service switching device as circuit breaker and manufacturing process

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DE2418862A1 (en) * 1974-04-19 1975-10-30 Licentia Gmbh Magnetic tripping system for protective cct. breaker - has non-magnetic stop in solenoid channel with recessed contact lever stop
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
GB2000379A (en) * 1977-06-27 1979-01-04 Weber Ag Fab Elektro Magnetic trip mechanism for automatic cut-out

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DE632371C (en) * 1935-04-17 1936-07-11 Franz Baumgartner Switching solenoid
DE1096469B (en) * 1959-01-24 1961-01-05 Elektroinstallation Annaberg V Electromagnetic quick release device for overcurrent switches, especially small circuit breakers

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Publication number Priority date Publication date Assignee Title
DE2418862A1 (en) * 1974-04-19 1975-10-30 Licentia Gmbh Magnetic tripping system for protective cct. breaker - has non-magnetic stop in solenoid channel with recessed contact lever stop
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
GB2000379A (en) * 1977-06-27 1979-01-04 Weber Ag Fab Elektro Magnetic trip mechanism for automatic cut-out

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199980A2 (en) * 1985-04-30 1986-11-05 Asea Brown Boveri Aktiengesellschaft Magnetic trip device
EP0199980A3 (en) * 1985-04-30 1989-05-10 Asea Brown Boveri Aktiengesellschaft Magnetic trip device
WO1997024746A1 (en) * 1995-12-28 1997-07-10 Felten & Guilleaume Austria Ag Armature for magnetic trigger mechanism
WO1997048113A1 (en) * 1996-06-14 1997-12-18 Enpece Sigma Ab A switch arrangement and method for mounting the same
WO2000021109A1 (en) * 1998-10-02 2000-04-13 Aeg Niederspannungstechnik Gmbh & Co. Kg Magnetic system
DE19952180A1 (en) * 1999-10-29 2001-05-03 Moeller Gmbh Electrical protection switching device
EP1981051A3 (en) * 2007-04-09 2010-04-14 EATON Corporation Electromagnetic coil apparatus employing a magnetic flux enhancer, and accessory and electrical switching apparatus employing the same

Also Published As

Publication number Publication date
EP0120422A3 (en) 1985-05-29
DE3310914C2 (en) 1991-03-28
DE3310914A1 (en) 1984-09-27

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