EP0442311B1 - Fast electromagnetic trip unit for electrical switching devices - Google Patents

Fast electromagnetic trip unit for electrical switching devices Download PDF

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Publication number
EP0442311B1
EP0442311B1 EP91101015A EP91101015A EP0442311B1 EP 0442311 B1 EP0442311 B1 EP 0442311B1 EP 91101015 A EP91101015 A EP 91101015A EP 91101015 A EP91101015 A EP 91101015A EP 0442311 B1 EP0442311 B1 EP 0442311B1
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EP
European Patent Office
Prior art keywords
permanent magnet
casing
circuit breaker
magnetic
speed circuit
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
EP91101015A
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German (de)
French (fr)
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EP0442311A3 (en
EP0442311A2 (en
Inventor
Gerd Dipl.-Ing. Schmitz
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Eaton Industries GmbH
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Kloeckner Moeller GmbH
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Publication of EP0442311A2 publication Critical patent/EP0442311A2/en
Publication of EP0442311A3 publication Critical patent/EP0442311A3/en
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Publication of EP0442311B1 publication Critical patent/EP0442311B1/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
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H01H71/322—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with plunger type armature

Definitions

  • the invention relates to an electromagnetic quick release device for electrical switching devices according to the preamble of claim 1.
  • the housing consists of a cup-shaped cylindrical body with an inwardly offset housing base, which is closed at its two open ends by disk-shaped flanges, one of which flange a lower pole plate forms ferromagnetic material, which includes an annular permanent magnet between itself and the inwardly displaced housing base, while the end flange at the upper end of the housing covers a trigger coil which is inserted with a coil-shaped carrier body into the housing from above and with the carrier body on the inwardly displaced housing base sits on.
  • the upper end flange protrudes with a cylindrical sleeve-shaped body into the interior of the carrier for the trigger coil and also has a cylindrical opening for a tubular actuator for a switch or the like, which consists of ferromagnetic material in its lower part and through the arranged on the housing bottom Permanent magnets against the action of a storage pressure spring, which is arranged in its cylindrical interior and is supported with its lower end against the lower pole plate, is held in contact with the raised housing base.
  • the raised base of the magnet housing serves as a diverter for the magnetic flux, which is generated on the one hand by the permanent magnet and on the other hand by the trigger coil.
  • the entire magnetic flux passes through the part of the diverter with a reduced cross section, further through part of the housing wall coaxially around the permanent magnet and further over the outer one serving as a pole plate Flange back to the permanent magnet.
  • the diverter is saturated and there is no magnetic flux in the rest of the magnetic circuit.
  • the actuating rod which is designed as a striking anchor, moves until it rests on a projection on the diverter, the storage spring being compressed.
  • the flow of the permanent magnet is hereby divided into two partial flows, one of which runs through the diverter, the housing wall surrounding the permanent magnet and the lower base flange or the pole plate, while the other partial flow runs through the projection of the diverter, a first axial air gap, the sleeve-shaped Shaft of the impact anchor, a second radial air gap surrounding it, the sleeve surrounding the impact anchor of the second flange, further through the second flange and back over the wall of the housing and serving as the lower pole plate housing flange.
  • the impact anchor is held here by the magnetic attraction of the permanent magnet in the tensioned position of the quick release, the magnetic attraction of the permanent magnet being greater than the force of the storage pressure spring inside the sleeve-shaped impact anchor.
  • the magnetic field generated by the coil counteracts the magnetic field of the permanent magnet and reduces the attraction force of the impact armature until the force of the storage pressure spring outweighs the magnetic attraction force and the impact armature is driven up to the triggered position Actuation of a switch or a similar device.
  • this electromagnetic quick release requires a relatively large permanent magnet and has an unfavorable course of the spring characteristic of the storage pressure spring.
  • the components of this quick release must be inserted individually from different sides into the housing which is open at both ends, which is an obstacle to mechanical assembly and also complicates manual assembly.
  • the invention has for its object to provide an electromagnetic quick release for electrical switching devices according to the preamble of claim 1 so that when the trigger is stretched on the one hand a favorable course of the spring characteristic and on the other hand a high holding force with a minimal magnet volume.
  • the invention has the advantage that, due to the arrangement of the permanent magnet on the plunger plunger, the magnetic flux in the tensioned state of the quick release forms a closed magnetic circuit, starting from the permanent magnet seated on the plunger plunger, via the magnetic core, the lower pole plate and a lower part of the release coil surrounding the release coil Wall of the housing made of ferromagnetic material of the quick release back to the permanent magnet, which here rests against the upper end of the magnetic core, possibly including a pole plate made of ferromagnetic material.
  • the magnetic flux direction reverses, so that the magnetic attraction forces after the permanent magnet has been released from the magnetic core assume the same direction of force as the direction of force of the storage spring. This means that the trigger force of the trigger increases by this force.
  • a particularly simple design of such a quick release results if the anchor plunger has a stop for driving the permanent magnet in the release direction of the anchor plunger, and if the anchor plunger also in the magnetic core protruding from the lower pole plate of the housing against the pressure of the storage pressure spring is guided telescopically coaxially.
  • a storage pressure spring a helical compression spring can advantageously be arranged in the sleeve-shaped magnetic core between the lower pole plate and the lower end of the impact plunger.
  • a particularly small magnet volume of the permanent magnet can be achieved according to a further feature of the invention in that the housing of the quick release above the trigger coil has a cylindrical projection of smaller diameter than the upper part of the wall of the housing, which springs back inwards against the permanent magnet and this or the latter Magnet yoke surrounds part of the height with an annular air gap so that the approach encloses the permanent magnet in the triggered state of the quick release over the entire length or height and the magnetic circuit is short-circuited by the permanent magnet over the wall of the housing approach.
  • a particularly compact design of such an electromagnetic quick release is also achieved in that the housing is provided at the upper end of the anchor plunger with a cylindrical cap of the housing overlapping plastic cap, which is connected to a sliding sleeve, which in turn on the shaft of the anchor plunger against the Pressure of a damper pressure spring, which is supported on the permanent magnet or magnetic yoke of the permanent magnet arrangement, can be displaced with limited stops and has an outwardly projecting collar which, in the triggered position of the quick release, under the action of the damper pressure spring on an inwardly directed abutment projection at the upper end of the housing attachment Facility is coming.
  • the plastic cap together with the sliding sleeve can carry out an overstroke up to the stop of the sliding sleeve on the permanent magnet or magnetic yoke against the pressure of the damper spring, a particularly favorable assembly when assembling such quick releases can be achieved in that the sliding sleeve is secured at the end of the shaft of the impact anchor tappet by means of a clamping ring under the pressure of the damper spring.
  • the electromagnetic quick release 1 consists of a release coil 2, which is surrounded by a housing 3 made of ferromagnetic material.
  • An actuating rod in the form of an impact plunger 6 is arranged within the sleeve of the magnetic core 4 and is guided in the housing 3 in a slightly movable manner in the axial direction and is under the pretension of an accumulator compression spring 7.
  • the plunger plunger 6 itself is made of non-magnetic material, and on the plunger plunger 6 a permanent magnet plate 8 is immovably arranged on a stop 6a, which holds the plunger plunger 6 against the pressure of the storage pressure spring 7 on the sleeve of the magnetic core 4.
  • a ferromagnetic pole plate 9 is provided between the permanent magnet 8 and the sleeve of the magnetic core 4, and for the precise definition of the holding force of the permanent magnet plate 8 on the sleeve there is a thin non-magnetic disk 10, which is made of plastic, between the pole plate 9 and the contact surface of the sleeve. provided as a damping means.
  • a magnetic yoke 11 made of ferromagnetic material is arranged on the side of the permanent magnet plate 8 facing away from the trigger coil 2. This magnetic yoke 11 serves to produce the magnetic circuit of the magnetic field within the magnet housing 3.
  • the end of the anchor plunger 6 protrudes into a plastic cap 12 which consists of a cover cap 13 and an inner sliding sleeve 14 which slides on the shaft of the anchor plunger 6 and is slidably guided in an upper cylindrical projection 15 of the magnet housing 3.
  • the sliding sleeve 14 has a conical collar 16, which is supported on an inwardly projecting conical shoulder 17 of the shoulder 15 of the housing 3 of the quick release 1 and limits the movement of the anchor plunger 6 when triggered against the pressure of the storage pressure spring 7.
  • a further damper compression spring 18 is arranged which, when the quick release is tensioned, that is to say when the permanent magnet 8 is brought into contact with the upper end of the magnetic core 4 via the associated pole plate 9, overlaps 19 of the tensioning element compensates.
  • the overstroke 19 can extend until the sliding sleeve 14 is seated on the magnetic yoke 11.
  • the permanent magnet 8 is arranged on the plunger plunger 6 above the trigger coil 2 with a narrow air gap 20 with respect to the upper part 21 of the wall of the housing 3 in the region of the extension 15 so that in the tensioned state of the quick release 1, the magnetic circuit 22 is closed by the permanent magnet 8 via the magnetic core 4, the lower pole plate 5 and the lower part 3a of the wall of the housing 3 surrounding the release coil 2 (FIG. 1).
  • This magnetic circuit 22 of FIG. 1 is opened when the quick release is triggered. For this, however, a new magnetic circuit 22a (FIGS. 2 and 3) closes from the permanent magnet 8 via the magnetic yoke 11, the housing attachment 15 and the pole plate 9. This magnetic circuit 22a acts as a support in the sense of the release movement, while the original one, the storage spring 7 counteracting magnetic circuit 22 (Fig. 1) loses its effect.
  • the hammer plunger 6 moves with the magnet arrangement, which consists of the annular disk-shaped permanent magnet 8, the annular disk-shaped pole plate 9 and the upper magnet yoke 11, in the intermediate position shown in FIG. 2 after the quick release 1 has been triggered by the magnetic field of the trigger coil 2 in the cylindrical extension 15 of the housing 3 into that the magnetic circuit 22 (Fig. 1) on the lower part 3a of the housing wall, the lower pole plate 5 and the magnetic core 4 is gradually interrupted until it relaxed 3 is only completely short-circuited between the permanent magnet 8 and the narrower part 21 of the wall in the area of the upper housing extension 15 (magnetic circuit 22a).
  • the housing 3 as can be seen in FIGS. 1 to 3 in detail, has the cylindrical extension 15 of smaller diameter above the trigger coil 2, the wall part 21 of which springs back against the permanent magnet 8 and the magnet yoke 11 and 1 surrounds part of the height with a narrow annular air gap 20 in such a way that the magnetic circuit 22 in the tensioned state of the quick release 1 from the permanent magnet 8 with pole plate 9 and magnet yoke 11 via the housing extension 15 and the wall of the housing 3, is further closed via the lower pole plate 5 and the magnetic core 4.
  • the permanent magnet 8 with pole plate 9 and magnet yoke 11 is lifted by the magnetic field of the trigger coil 2 from the magnetic core 4 in the triggering direction 6b and together with the plunger plunger 6 by the acting on this accumulator compression spring 7 and the Approach 15 constructing closed magnetic circuit 22a into the approach 15 of the housing 3, so that the magnetic circuit 22 via the housing wall 3a, the lower pole plate 5 and the magnetic core 4 is increasingly interrupted until the approach 15 of the housing 3 the permanent magnet 8 in the triggered state of the quick release 1 of FIG. 3 over its entire length or height and thus the magnetic circuit 22a of the permanent magnet 8 is short-circuited via the wall 21 of the housing extension 15.
  • the distance between the cap 13 of the plastic cap 12 and the end face 23 of the housing extension 15 is in the rest of the tensioned position of the quick release 1 of Fig. 1 as well as the distance between the sliding sleeve 14 and the magnetic yoke 11 so dimensioned that the plastic cap 12 together can perform an overstroke 19 with the sliding sleeve 14 until it rests on the housing extension 15.
  • This assembly unit consisting of the components listed above can be inserted into the cylindrical opening 25 on the housing 3 of the quick release 1 from the underside of the housing are up to the stop of the lower pole plate 5 on a protruding from the housing inner shoulder 26, whereupon the pole plate 5 is grained at the lower end of the housing, in order to then firmly connect the cover cap 13 of the plastic cap 12 at the opposite end to the sliding sleeve 14, whereby the Assembly of the quick release is already finished.

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

Description

Die Erfindung betrifft einen elektromagnetischen Schnellauslöser für elektrische Schaltgeräte nach dem Oberbegriff des Anspruches 1.The invention relates to an electromagnetic quick release device for electrical switching devices according to the preamble of claim 1.

Bei einem derartigen bekannten elektromagnetischen Schnellauslöser (US-PS 46 60 012) besteht das Gehäuse aus einem topfförmigen zylindrischen Körper mit einem nach innen versetzten Gehäuseboden, der an seinen beiden offenen Enden durch scheibenförmige Flansche verschlossen ist, von denen der eine Flansch eine untere Polplatte aus ferromagnetischem Material bildet, die zwischen sich und dem nach innen versetzten Gehäuseboden einen ringförmigen Dauermagneten einschließt, während der Abschlußflansch am oberen Gehäuseende eine Auslöserspule überdeckt, die mit einem spulenförmigen Trägerkörper in das Gehäuse von oben her eingesetzt ist und mit dem Trägerkörper am nach innen versetzten Gehäuseboden aufsitzt. Der obere Abschlußflansch ragt dabei mit einem zylindrischen hülsenförmigen Körper in den Innenraum des Trägers für die Auslöserspule hinein und besitzt außerdem eine zylindrische Öffnung für ein rohrförmiges Betätigungsglied für einen Schalter oder dergleichen, das in seinem unteren Teil aus ferromagnetischem Material besteht und durch den am Gehäuseboden angeordneten Dauermagneten gegen die Wirkung einer Speicherdruckfeder, die in seinem zylindrischen Inneren angeordnet ist und sich mit ihrem unteren Ende gegen die untere Polplatte abstützt, in Anlage an dem hochgesetzten Gehäuseboden gehalten wird.In such a known electromagnetic quick release (US-PS 46 60 012), the housing consists of a cup-shaped cylindrical body with an inwardly offset housing base, which is closed at its two open ends by disk-shaped flanges, one of which flange a lower pole plate forms ferromagnetic material, which includes an annular permanent magnet between itself and the inwardly displaced housing base, while the end flange at the upper end of the housing covers a trigger coil which is inserted with a coil-shaped carrier body into the housing from above and with the carrier body on the inwardly displaced housing base sits on. The upper end flange protrudes with a cylindrical sleeve-shaped body into the interior of the carrier for the trigger coil and also has a cylindrical opening for a tubular actuator for a switch or the like, which consists of ferromagnetic material in its lower part and through the arranged on the housing bottom Permanent magnets against the action of a storage pressure spring, which is arranged in its cylindrical interior and is supported with its lower end against the lower pole plate, is held in contact with the raised housing base.

Der hochgesetzte Boden des Magnetgehäuses dient dabei als Umleiter für den Magnetfluß, der einerseits durch den Dauermagneten und zum anderen durch die Auslöserspule erzeugt wird. In der gespannten Stellung des Schnellauslösers, in der die Auslöserspule nicht von einem Strom durchflossen ist, geht der gesamte Magnetfluß durch den im Querschnitt verringerten Teil des Umleiters, weiter durch einen Teil der Gehäusewandung koaxial um den Dauermagneten herum und weiter über den als Polplatte dienenden äußeren Flansch zurück zu dem Dauermagneten. Der Umleiter ist gesättigt, und im übrigen Teil des Magnetkreises ist kein Magnetfluß vorhanden.The raised base of the magnet housing serves as a diverter for the magnetic flux, which is generated on the one hand by the permanent magnet and on the other hand by the trigger coil. In the tensioned position of the quick release, in which a current does not flow through the release coil, the entire magnetic flux passes through the part of the diverter with a reduced cross section, further through part of the housing wall coaxially around the permanent magnet and further over the outer one serving as a pole plate Flange back to the permanent magnet. The diverter is saturated and there is no magnetic flux in the rest of the magnetic circuit.

Bei der Rückstellung des Schnellauslösers bewegt sich die als Schlaganker ausgebildete Betätigungsstange bis zur Anlage an einem Vorsprung an dem Umleiter, wobei die Speicherfeder zusammengedrückt wird. Der Fluß des Dauermagneten wird hierdurch in zwei Teilströme aufgeteilt, von denen einer durch den Umleiter, die den Dauermagneten umgebende Gehäusewand und den unteren Bodenflansch bzw. die Polplatte verläuft, während der andere Teilstrom durch den Vorsprung des Umleiters, einen ersten axialen Luftspalt, den hülsenförmigen Schaft des Schlagankers, einen diesen umgebenden zweiten radialen Luftspalt, die den Schlaganker umgebende Hülse des zweiten Flansches, weiter durch den zweiten Flansch und zurück über die Wandung des Gehäuses und den als untere Polplatte dienenden Gehäuseflansch führt.When the quick release is reset, the actuating rod, which is designed as a striking anchor, moves until it rests on a projection on the diverter, the storage spring being compressed. The flow of the permanent magnet is hereby divided into two partial flows, one of which runs through the diverter, the housing wall surrounding the permanent magnet and the lower base flange or the pole plate, while the other partial flow runs through the projection of the diverter, a first axial air gap, the sleeve-shaped Shaft of the impact anchor, a second radial air gap surrounding it, the sleeve surrounding the impact anchor of the second flange, further through the second flange and back over the wall of the housing and serving as the lower pole plate housing flange.

Der Schlaganker wird hierbei durch die magnetische Anziehungskraft des Dauermagneten in der gespannten Stellung des Schnellauslösers gehalten, wobei die magnetische Anziehungskraft des Dauermagneten größer ist als die Kraft der Speicherdruckfeder im Inneren des hülsenförmigen Schlagankers.The impact anchor is held here by the magnetic attraction of the permanent magnet in the tensioned position of the quick release, the magnetic attraction of the permanent magnet being greater than the force of the storage pressure spring inside the sleeve-shaped impact anchor.

Wenn die Auslöserspule durch einen Überstrom erregt wird, wirkt das von der Spule erzeugte Magnetfeld dem Magnetfeld des Dauermagneten entgegen und verringert die Anziehungskraft des Schlagankers solange, bis die Kraft der Speicherdruckfeder die magnetische Anziehungskraft überwiegt und der Schlaganker in die ausgelöste Stellung nach oben getrieben wird zur Betätigung eines Schalters oder einer ähnlichen Einrichtung.If the trigger coil is excited by an overcurrent, the magnetic field generated by the coil counteracts the magnetic field of the permanent magnet and reduces the attraction force of the impact armature until the force of the storage pressure spring outweighs the magnetic attraction force and the impact armature is driven up to the triggered position Actuation of a switch or a similar device.

Aufgrund der ortsfesten Anordnung des Dauermagneten am Boden des Gehäuses und der Ausbildung des Schlagankers aus ferromagnetischem Material als Teil des Magnetkreises erfordert dieser elektromagnetische Schnellauslöser einen verhältnismäßig großen Dauermagneten und hat einen ungünstigen Verlauf der Federkennlinie der Speicherdruckfeder. Außerdem müssen die Bauteile dieses Schnellauslösers einzeln von verschiedenen Seiten in das an beiden Enden offene Gehäuse eingesetzt werden, was einer maschinellen Montage hinderlich ist und auch eine manuelle Montage erschwert.Due to the fixed arrangement of the permanent magnet on the bottom of the housing and the formation of the impact anchor made of ferromagnetic material as part of the magnetic circuit, this electromagnetic quick release requires a relatively large permanent magnet and has an unfavorable course of the spring characteristic of the storage pressure spring. In addition, the components of this quick release must be inserted individually from different sides into the housing which is open at both ends, which is an obstacle to mechanical assembly and also complicates manual assembly.

Der Erfindung liegt die Aufgabe zugrunde, einen elektromagnetischen Schnellauslöser für elektrische Schaltgeräte nach dem Oberbegriff des Anspruches 1 so auszubilden, daß sich beim Spannen des Auslösers einerseits ein günstiger Verlauf der Federkennlinie und andererseits eine hohe Haltekraft bei minimalem Magnetvolumen ergibt.The invention has for its object to provide an electromagnetic quick release for electrical switching devices according to the preamble of claim 1 so that when the trigger is stretched on the one hand a favorable course of the spring characteristic and on the other hand a high holding force with a minimal magnet volume.

Diese Aufgabe wird gemäß der Erfindung durch den Kennzeichnungsteil des Anspruches 1 gelöst, während in den Ansprüchen 2 bis 11 besonders vorteilhafte Weiterbildungen der Erfindung gekennzeichnet sind.This object is achieved according to the invention by the characterizing part of claim 1, while particularly advantageous developments of the invention are characterized in claims 2 to 11.

Durch die Erfindung ergibt sich der Vorteil, daß aufgrund der Anordnung des Dauermagneten am Schlagankerstößel der Magnetfluß im gespannten Zustand des Schnellauslösers einen geschlossenen Magnetkreis bildet ausgehend von dem auf dem Schlagankerstößel sitzenden Dauermagneten über den Magnetkern, die untere Polplatte und einen die Auslöserspule umgebenden unteren Teil der Wandung des aus ferromagnetischem Material bestehenden Gehäuses des Schnellauslösers zurück zum Dauermagneten, der hierbei am oberen Ende des Magnetkerns anliegt, gegebenenfalls unter Einschluß einer Polplatte aus ferromagnetischem Material.The invention has the advantage that, due to the arrangement of the permanent magnet on the plunger plunger, the magnetic flux in the tensioned state of the quick release forms a closed magnetic circuit, starting from the permanent magnet seated on the plunger plunger, via the magnetic core, the lower pole plate and a lower part of the release coil surrounding the release coil Wall of the housing made of ferromagnetic material of the quick release back to the permanent magnet, which here rests against the upper end of the magnetic core, possibly including a pole plate made of ferromagnetic material.

Im ausgelösten Zustand des Schnellauslösers ergibt sich durch die Verlagerung des Dauermagneten zusammen mit dem Schlagankerstößel ein kurzgeschlossener Magnetkreis zwischen dem Dauermagneten und dem oberen engeren Teil der Wandung des Magnetgehäuses. Dieses Verhalten des Dauermagneten führt beim Spannen des Auslösers zu einem günstigen Verlauf der Federkennlinie der den Schlagankerstößel in Auslöserichtung belastenden Speicherdruckfeder und ermöglicht außerdem eine hohe Haltekraft bei minimalem Magnetvolumen des Dauermagneten.When the quick release is released, the short-circuit magnetic circuit between the permanent magnet and the upper, narrower part of the wall of the magnet housing results from the displacement of the permanent magnet together with the impact plunger. This behavior of the permanent magnet, when the trigger is tensioned, leads to a favorable course of the spring characteristic of the accumulator pressure spring which loads the anchor plunger in the triggering direction and also enables a high holding force with a minimal magnet volume of the permanent magnet.

Während der Vorwärtsbewegung des Dauermagneten bei jedem Auslösevorgang kehrt sich die magnetische Flußrichtung um, so daß die magnetischen Anziehungskräfte nach dem Lösen des Dauermagneten von dem Magnetkern dieselbe Kraftrichtung annehmen wie die Kraftrichtung der Speicherfeder. Das heißt, die Auslösekraft des Auslösers erhöht sich um diese Kraft.During the forward movement of the permanent magnet with each triggering process, the magnetic flux direction reverses, so that the magnetic attraction forces after the permanent magnet has been released from the magnetic core assume the same direction of force as the direction of force of the storage spring. This means that the trigger force of the trigger increases by this force.

Eine besonders einfache Konstruktion eines solchen Schnellauslösers ergibt sich, wenn der Schlagankerstößel einen Anschlag zur Mitnahme des Dauermagneten in Auslöserichtung des Schlagankerstößels aufweist, und wenn der Schlagankerstößel außerdem in dem von der unteren Polplatte des Gehäuses aufragenden Magnetkern gegen den Druck der Speicherdruckfeder teleskopartig koaxial verschiebbar geführt ist. Als Speicherdruckfeder kann vorteilhafterweise eine Schraubendruckfeder in dem hülsenförmigen Magnetkern zwischen der unteren Polplatte und dem unteren Ende des Schlagankerstößels angeordnet sein.A particularly simple design of such a quick release results if the anchor plunger has a stop for driving the permanent magnet in the release direction of the anchor plunger, and if the anchor plunger also in the magnetic core protruding from the lower pole plate of the housing against the pressure of the storage pressure spring is guided telescopically coaxially. As a storage pressure spring, a helical compression spring can advantageously be arranged in the sleeve-shaped magnetic core between the lower pole plate and the lower end of the impact plunger.

Besonders günstige Auslöseverhältnisse ergeben sich ferner, wenn der Dauermagnet auf dem Schlagankerstößel zwischen einer ferromagnetischen Polplatte und einem scheibenförmigen Magnetjoch aus ferromagnetischem Werkstoff angeordnet ist. Hierdurch können die gegenseitigen Einwirkungen von Magnetanordnung und Speicherdruckfeder beim Spannen des Schnellauslösers und auch beim Auslösevorgang im Kurzschlußfalle gut aufeinander abgestimmt werden, wobei es für eine definierte Anlage der Dauermagnetanordnung am stirnseitigen Ende des Magnetkerns noch von besonderem Vorteil ist, wenn der Dauermagnet bzw. die Anordnung von Dauermagnet mit ferromagnetischer Polplatte und Magnetjoch mit einer dünnen Scheibe aus unmagnetischem Material als Dämpfungsmittel für die Auflage der Polplatte am stirnseitigen Ende des Magnetkernes versehen ist.Particularly favorable tripping conditions also result if the permanent magnet is arranged on the impact tappet between a ferromagnetic pole plate and a disk-shaped magnetic yoke made of ferromagnetic material. As a result, the mutual effects of the magnet arrangement and the storage pressure spring when the quick release is tensioned and also during the release process in the event of a short circuit can be coordinated well, it being particularly advantageous for a defined arrangement of the permanent magnet arrangement at the front end of the magnetic core if the permanent magnet or the arrangement of permanent magnet with ferromagnetic pole plate and magnetic yoke with a thin disk made of non-magnetic material as a damping means for the support of the pole plate at the front end of the magnetic core.

Ein besonders geringes Magnetvolumen des Dauermagneten kann nach einem weiteren Merkmal der Erfindung dadurch erreicht werden, daß das Gehäuse des Schnellauslösers oberhalb der Auslöserspule einen zylindrischen Ansatz geringeren Durchmessers als oberen Teil der Wandung des Gehäuses aufweist, der gegen den Dauermagneten nach innen zurückspringt und diesen oder dessen Magnetjoch über einen Teil der Höhe mit einem ringförmigen Luftspalt derart umgibt, daß der Ansatz den Dauermagneten im ausgelösten Zustand des Schnellauslösers über die gesamte Länge bzw. Höhe umschließt und der Magnetkreis von dem Dauermagneten über die Wandung des Gehäuseansatzes unmittelbar kurzgeschlossen ist.A particularly small magnet volume of the permanent magnet can be achieved according to a further feature of the invention in that the housing of the quick release above the trigger coil has a cylindrical projection of smaller diameter than the upper part of the wall of the housing, which springs back inwards against the permanent magnet and this or the latter Magnet yoke surrounds part of the height with an annular air gap so that the approach encloses the permanent magnet in the triggered state of the quick release over the entire length or height and the magnetic circuit is short-circuited by the permanent magnet over the wall of the housing approach.

Eine besonders kompakte Bauweise eines solchen elektromagnetischen Schnellauslösers wird weiterhin auch dadurch erreicht, daß das Gehäuse am oberen Ende des Schlagankerstößels mit einer den zylindrischen Ansatz des Gehäuses übergreifenden Kunststoffkappe versehen ist, die mit einer Gleithülse verbunden ist, die ihrerseits auf dem Schaft des Schlagankerstößels gegen den Druck einer Dämpferdruckfeder, die am Dauermagneten bzw. Magnetjoch der Dauermagnetanordnung abgestützt ist, anschlagbegrenzt verschiebbar ist und einen nach außen hervorspringenden Kragen aufweist, der in der ausgelösten Stellung des Schnellauslösers unter der Wirkung der Dämpferdruckfeder an einem nach innen gerichteten Widerlagervorsprung am oberen Ende des Gehäuseansatzes zur Anlage kommt.A particularly compact design of such an electromagnetic quick release is also achieved in that the housing is provided at the upper end of the anchor plunger with a cylindrical cap of the housing overlapping plastic cap, which is connected to a sliding sleeve, which in turn on the shaft of the anchor plunger against the Pressure of a damper pressure spring, which is supported on the permanent magnet or magnetic yoke of the permanent magnet arrangement, can be displaced with limited stops and has an outwardly projecting collar which, in the triggered position of the quick release, under the action of the damper pressure spring on an inwardly directed abutment projection at the upper end of the housing attachment Facility is coming.

Von besonderem Vorteil ist dabei weiterhin, daß die Kunststoffkappe zusammen mit der Gleithülse gegen den Druck der Dämpferfeder einen Überhub bis zum Anschlag der Gleithülse auf dem Dauermagneten oder Magnetjoch ausführen kann, wobei noch eine besonders günstige Montage beim Zusammenbau solcher Schnellauslöser dadurch erreicht werden kann, daß die Gleithülse am Schaftende des Schlagankerstößels mittels eines Spannringes unter dem Druck der Dämpferfeder anschlagbegrenzt gesichert ist.It is also of particular advantage that the plastic cap together with the sliding sleeve can carry out an overstroke up to the stop of the sliding sleeve on the permanent magnet or magnetic yoke against the pressure of the damper spring, a particularly favorable assembly when assembling such quick releases can be achieved in that the sliding sleeve is secured at the end of the shaft of the impact anchor tappet by means of a clamping ring under the pressure of the damper spring.

Hierdurch ergibt sich auch die für den Zusammenbau besonders vorteilhafte Möglichkeit, daß die untere Polplatte mit dem die Auslöserspule durchsetzenden hülsenförmigen Magnetkern und dem in die hülsenförmige Öffnung am Magnetkern zusammen mit der Speicherdruckfeder eingeschobenen Schlagankerstößel, ferner mit der auf dem Schlagankerstößel sitzenden Magnetanordnung, die aus Polplatte mit unmagnetischer Scheibe, Dauermagnet und Magnetjoch besteht und mit der Polplatte unter Einschluß der unmagnetischen Scheibe am Magnetkern anliegt, und weiterhin mit der unter Einschluß der Dämpferdruckfeder auf dem Schaft des Schlagankerstößels mittels des Spannringes gesicherten Gleithülse für die Kunststoffkappe eine Montageeinheit bilden kann, die in die zylindrische Öffnung am Gehäuse des Schnellauslösers von der Gehäuseunterseite her einschiebbar ist bis zum Anschlag der unteren Polplatte an einem von der Gehäuseinnenwand hervorspringenden Ansatz, woraufhin die Polplatte am unteren Ende des Gehäuses verkörnt und anschließend die Kunststoffkappe am gegenüberliegenden Ende mit der Gleithülse fest verbunden werden kann.This also results in the particularly advantageous possibility for assembly that the lower pole plate with the sleeve-shaped magnetic core passing through the release coil and the hammer plunger inserted into the sleeve-shaped opening on the magnetic core together with the storage pressure spring, furthermore with the magnet arrangement seated on the armature plunger, made of pole plate with non-magnetic disc, permanent magnet and magnetic yoke and with the pole plate including the non-magnetic disc on the magnetic core, and also with that including the damper compression spring on the shaft of the impact plunger by means of the clamping ring secured sliding sleeve for the plastic cap can form an assembly unit which can be pushed into the cylindrical opening on the housing of the quick release mechanism from the underside of the housing up to the stop of the lower pole plate on an extension projecting from the housing inner wall, whereupon the pole plate grained at the lower end of the housing and then the plastic cap can be firmly connected to the sliding sleeve at the opposite end.

Ein bevorzugtes Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch dargestellt. Es zeigen

Fig. 1
einen axialen Längsschnitt durch einen elektromagnetischen Schnellauslöser in der gespannten Stellung,
Fig. 2
einen Längsschnitt durch den Schnellauslöser zu Beginn eines Auslösevorganges und
Fig. 3
einen Längsschnitt durch den Schnellauslöser in der ausgelösten Stellung.
A preferred embodiment of the invention is shown schematically in the drawing. Show it
Fig. 1
an axial longitudinal section through an electromagnetic quick release in the cocked position,
Fig. 2
a longitudinal section through the quick release at the beginning of a triggering process and
Fig. 3
a longitudinal section through the quick release in the released position.

Der elektromagnetische Schnellauslöser 1 besteht aus einer Auslöserspule 2, die von einem Gehäuse 3 aus ferromagnetischem Material umgeben ist. Ein Magnetkern 4 in Form einer Hülse mit einer Polplatte 5 als unterer Abschluß ragt in die Auslöserspule 2 von unten hinein und durchsetzt die Auslöserspule 2 über deren gesamte Länge, um damit einen magnetischen Schluß um die Auslöserspule 2 herzustellen. Innerhalb der Hülse des Magnetkerns 4 ist eine Betätigungsstange in Form eines Schlagankerstößels 6 angeordnet, der in axialer Richtung im Gehäuse 3 leicht beweglich geführt ist und unter der Vorspannung einer Speicherdruckfeder 7 steht.The electromagnetic quick release 1 consists of a release coil 2, which is surrounded by a housing 3 made of ferromagnetic material. A magnetic core 4 in the form of a sleeve with a pole plate 5 as the lower end protrudes into the trigger coil 2 from below and passes through the trigger coil 2 over its entire length, so as to produce a magnetic circuit around the trigger coil 2. An actuating rod in the form of an impact plunger 6 is arranged within the sleeve of the magnetic core 4 and is guided in the housing 3 in a slightly movable manner in the axial direction and is under the pretension of an accumulator compression spring 7.

Der Schlagankerstößel 6 selbst besteht aus nichtmagnetischem Werkstoff, und auf dem Schlagankerstößel 6 ist an einem Anschlag 6a eine Dauermagnetplatte 8 unverschiebbar angeordnet, die den Schlagankerstößel 6 gegen den Druck der Speicherdruckfeder 7 auf der Hülse des Magnetkerns 4 hält.The plunger plunger 6 itself is made of non-magnetic material, and on the plunger plunger 6 a permanent magnet plate 8 is immovably arranged on a stop 6a, which holds the plunger plunger 6 against the pressure of the storage pressure spring 7 on the sleeve of the magnetic core 4.

Zwischen dem Dauermagneten 8 und der Hülse des Magnetkerns 4 ist eine ferromagnetische Polplatte 9 vorgesehen, und zur genaueren Definition der Haltekraft der Dauermagnetplatte 8 auf der Hülse ist zwischen der Polplatte 9 und der Auflagefläche der Hülse eine dünne unmagnetische Scheibe 10, die aus Kunststoff besteht, als Dämpfungsmittel vorgesehen.A ferromagnetic pole plate 9 is provided between the permanent magnet 8 and the sleeve of the magnetic core 4, and for the precise definition of the holding force of the permanent magnet plate 8 on the sleeve there is a thin non-magnetic disk 10, which is made of plastic, between the pole plate 9 and the contact surface of the sleeve. provided as a damping means.

Auf der der Auslöserspule 2 abgewandten Seite der Dauermagnetplatte 8 ist ein Magnetjoch 11 aus ferromagnetischem Werkstoff angeordnet. Dieses Magnetjoch 11 dient dazu, den magnetischen Schluß des Magnetfeldes innerhalb des Magnetgehäuses 3 herzustellen.A magnetic yoke 11 made of ferromagnetic material is arranged on the side of the permanent magnet plate 8 facing away from the trigger coil 2. This magnetic yoke 11 serves to produce the magnetic circuit of the magnetic field within the magnet housing 3.

Das Ende des Schlagankerstößels 6 ragt in eine Kunststoffkappe 12, die aus einer Abdeckkappe 13 und einer inneren Gleithülse 14 besteht, die auf dem Schaft des Schlagankerstößels 6 gleitet und in einem oberen zylindrischen Ansatz 15 des Magnetgehäuses 3 verschiebbar geführt ist.The end of the anchor plunger 6 protrudes into a plastic cap 12 which consists of a cover cap 13 and an inner sliding sleeve 14 which slides on the shaft of the anchor plunger 6 and is slidably guided in an upper cylindrical projection 15 of the magnet housing 3.

Die Gleithülse 14 hat einen konischen Kragen 16, der sich an einem nach innen ragenden konischen Absatz 17 des Ansatzes 15 des Gehäuses 3 des Schnellauslösers 1 abstützt und die Bewegung des Schlagankerstößels 6 bei der Auslösung gegen den Druck der Speicherdruckfeder 7 begrenzt.The sliding sleeve 14 has a conical collar 16, which is supported on an inwardly projecting conical shoulder 17 of the shoulder 15 of the housing 3 of the quick release 1 and limits the movement of the anchor plunger 6 when triggered against the pressure of the storage pressure spring 7.

Zwischen der Kunststoffkappe 12 bzw. der Gleithülse 14 und dem Magnetjoch 11 ist eine weitere Dämpferdruckfeder 18 angeordnet, die beim Spannen des Schnellauslösers, das heißt wenn der Dauermagnet 8 über die zugehörige Polplatte 9 zur Anlage am oberen Ende des Magnetkerns 4 gebracht wird, einen Überhub 19 des Spannelementes ausgleicht. Der Überhub 19 kann dabei bis zum Aufsitzen der Gleithülse 14 auf dem Magnetjoch 11 reichen.Between the plastic cap 12 or the sliding sleeve 14 and the magnet yoke 11, a further damper compression spring 18 is arranged which, when the quick release is tensioned, that is to say when the permanent magnet 8 is brought into contact with the upper end of the magnetic core 4 via the associated pole plate 9, overlaps 19 of the tensioning element compensates. The overstroke 19 can extend until the sliding sleeve 14 is seated on the magnetic yoke 11.

Darüber hinaus wird im Falle einer Auslösung die Auswirkung der kinetischen Energie des Schlagankerstößels 6 mit Dauermagnet 8, Polplatte 9 und Magnetjoch 11 durch die Dämpferdruckfeder 18 gemildert. Als Gegenlager für die Dämpferdruckfeder 18 dient ein Spannring 30, der die Gleithülse 14 am oberen Ende des Schlagankerstößels 6 sichert.In addition, the impact of the kinetic energy of the plunger 6 with permanent magnet 8, pole plate 9 and magnet yoke 11 is mitigated by the damper compression spring 18 in the event of a triggering. A clamping ring 30, which secures the sliding sleeve 14 at the upper end of the impact rod tappet 6, serves as the counter bearing for the damper compression spring 18.

Wie in der Zeichnung weiterhin zu erkennen ist, ist der Dauermagnet 8 an dem Schlagankerstößel 6 oberhalb der Auslöserspule 2 mit einem engen Luftspalt 20 gegenüber dem oberen Teil 21 der Wandung des Gehäuses 3 im Bereich des Ansatzes 15 so angeordnet, daß im gespannten Zustand des Schnellauslösers 1 der Magnetkreis 22 von dem Dauermagneten 8 über den Magnetkern 4, die untere Polplatte 5 und den die Auslöserspule 2 umgebenden unteren Teil 3a der Wandung des Gehäuses 3 geschlossen ist (Fig. 1).As can also be seen in the drawing, the permanent magnet 8 is arranged on the plunger plunger 6 above the trigger coil 2 with a narrow air gap 20 with respect to the upper part 21 of the wall of the housing 3 in the region of the extension 15 so that in the tensioned state of the quick release 1, the magnetic circuit 22 is closed by the permanent magnet 8 via the magnetic core 4, the lower pole plate 5 and the lower part 3a of the wall of the housing 3 surrounding the release coil 2 (FIG. 1).

Dieser Magnetkreis 22 von Fig. 1 wird bei der Auslösung des Schnellauslösers aufgetrennt. Dafür schließt sich jedoch ein neuer Magnetkreis 22a (Fig. 2 und Fig. 3) von dem Dauermagneten 8 über das Magnetjoch 11, den Gehäuseansatz 15 und die Polplatte 9. Dieser Magnetkreis 22a wirkt unterstützend im Sinne der Auslösebewegung, während der ursprüngliche, der Speicherfeder 7 entgegenwirkende Magnetkreis 22 (Fig. 1) seine Wirkung verliert.This magnetic circuit 22 of FIG. 1 is opened when the quick release is triggered. For this, however, a new magnetic circuit 22a (FIGS. 2 and 3) closes from the permanent magnet 8 via the magnetic yoke 11, the housing attachment 15 and the pole plate 9. This magnetic circuit 22a acts as a support in the sense of the release movement, while the original one, the storage spring 7 counteracting magnetic circuit 22 (Fig. 1) loses its effect.

Dementsprechend bewegt sich der Schlagankerstößel 6 mit der Magnetanordnung, die aus dem ringscheibenförmigen Dauermagneten 8, der ebenfalls ringscheibenförmigen Polplatte 9 und dem oberen Magnetjoch 11 besteht, in der in Fig. 2 gezeigten Zwischenstellung nach einer Auslösung des Schnellauslösers 1 durch das Magnetfeld der Auslöserspule 2 so in den zylindrischen Ansatz 15 des Gehäuses 3 hinein, daß der Magnetkreis 22 (Fig. 1) über den unteren Teil 3a der Gehäusewandung, die untere Polplatte 5 und den Magnetkern 4 allmählich unterbrochen wird, bis er im entspannten oder ausgelösten Zustand des Schnellauslösers gemäß Fig. 3 nur noch zwischen dem Dauermagneten 8 und dem engeren Teil 21 der Wandung im Bereich des oberen Gehäuseansatzes 15 (Magnetkreis 22a) vollständig kurzgeschlossen ist.Accordingly, the hammer plunger 6 moves with the magnet arrangement, which consists of the annular disk-shaped permanent magnet 8, the annular disk-shaped pole plate 9 and the upper magnet yoke 11, in the intermediate position shown in FIG. 2 after the quick release 1 has been triggered by the magnetic field of the trigger coil 2 in the cylindrical extension 15 of the housing 3 into that the magnetic circuit 22 (Fig. 1) on the lower part 3a of the housing wall, the lower pole plate 5 and the magnetic core 4 is gradually interrupted until it relaxed 3 is only completely short-circuited between the permanent magnet 8 and the narrower part 21 of the wall in the area of the upper housing extension 15 (magnetic circuit 22a).

Dies wird dadurch erreicht, daß das Gehäuse 3, wie in Fig. 1 bis 3 im einzelnen zu erkennen ist, oberhalb der Auslöserspule 2 den zylindrischen Ansatz 15 geringeren Durchmessers aufweist, dessen Wandungsteil 21 gegen den Dauermagneten 8 und das Magnetjoch 11 nach innen zurückspringt und diese in der gespannten Stellung von Fig. 1 über einen Teil der Höhe mit einem engen ringförmigen Luftspalt 20 derart umgibt, daß der Magnetkreis 22 im gespannten Zustand des Schnellauslösers 1 von dem Dauermagneten 8 mit Polplatte 9 und Magnetjoch 11 über den Gehäuseansatz 15 und die Wandung des Gehäuses 3, weiter über die untere Polplatte 5 und den Magnetkern 4 geschlossen ist.This is achieved in that the housing 3, as can be seen in FIGS. 1 to 3 in detail, has the cylindrical extension 15 of smaller diameter above the trigger coil 2, the wall part 21 of which springs back against the permanent magnet 8 and the magnet yoke 11 and 1 surrounds part of the height with a narrow annular air gap 20 in such a way that the magnetic circuit 22 in the tensioned state of the quick release 1 from the permanent magnet 8 with pole plate 9 and magnet yoke 11 via the housing extension 15 and the wall of the housing 3, is further closed via the lower pole plate 5 and the magnetic core 4.

Zu Beginn einer Auslösebewegung (Fig. 2) wird der Dauermagnet 8 mit Polplatte 9 und Magnetjoch 11 durch das Magnetfeld der Auslöserspule 2 von dem Magnetkern 4 in Auslöserichtung 6b abgehoben und zusammen mit dem Schlagankerstößel 6 durch die auf diesen einwirkende Speicherdruckfeder 7 und den sich zum Ansatz 15 aufbauenden geschlossenen Magnetkreis 22a in den Ansatz 15 des Gehäuses 3 hineinbewegt, so daß der Magnetkreis 22 über die Gehäusewandung 3a, die untere Polplatte 5 und den Magnetkern 4 zunehmend unterbrochen wird, bis der Ansatz 15 des Gehäuses 3 den Dauermagneten 8 im ausgelösten Zustand des Schnellauslösers 1 von Fig. 3 über seine gesamte Länge bzw. Höhe umschließt und damit der Magnetkreis 22a von dem Dauermagneten 8 über die Wandung 21 des Gehäuseansatzes 15 kurzgeschlossen ist.At the beginning of a trigger movement (Fig. 2), the permanent magnet 8 with pole plate 9 and magnet yoke 11 is lifted by the magnetic field of the trigger coil 2 from the magnetic core 4 in the triggering direction 6b and together with the plunger plunger 6 by the acting on this accumulator compression spring 7 and the Approach 15 constructing closed magnetic circuit 22a into the approach 15 of the housing 3, so that the magnetic circuit 22 via the housing wall 3a, the lower pole plate 5 and the magnetic core 4 is increasingly interrupted until the approach 15 of the housing 3 the permanent magnet 8 in the triggered state of the quick release 1 of FIG. 3 over its entire length or height and thus the magnetic circuit 22a of the permanent magnet 8 is short-circuited via the wall 21 of the housing extension 15.

Der Abstand zwischen der Abdeckkappe 13 der Kunststoffkappe 12 und der Stirnfläche 23 des Gehäuseansatzes 15 ist im übrigen in der gespannten Stellung des Schnellauslösers 1 von Fig. 1 ebenso wie der Abstand zwischen der Gleithülse 14 und dem Magnetjoch 11 so bemessen, daß die Kunststoffkappe 12 zusammen mit der Gleithülse 14 einen Überhub 19 bis zum Aufsitzen auf dem Gehäuseansatz 15 ausführen kann.The distance between the cap 13 of the plastic cap 12 and the end face 23 of the housing extension 15 is in the rest of the tensioned position of the quick release 1 of Fig. 1 as well as the distance between the sliding sleeve 14 and the magnetic yoke 11 so dimensioned that the plastic cap 12 together can perform an overstroke 19 with the sliding sleeve 14 until it rests on the housing extension 15.

Zur einfachen Montage des Schnellauslösers 1 trägt im übrigen maßgeblich bei, daß die Gleithülse 14 am Schaft des Schlagankerstößels 6 mittels des Spannringes 19 unter dem Druck der Dämpferdruckfeder 18 anschlagbegrenzt gesichert ist.For easy assembly of the quick release 1 contributes significantly that the sliding sleeve 14 is secured on the shaft of the plunger 6 by means of the clamping ring 19 under the pressure of the damper compression spring 18 limited.

Beim Zusammenbau solcher Schnellauslöser 1 kann daher in einfacher Weise so vorgegangen werden, daß die untere Polplatte 5 mit dem die Auslöserspule 2 durchsetzenden hülsenförmigen Magnetkern 4 und dem in die hülsenförmige Öffnung 24 am Magnetkern 4 zusammen mit der Speicherdruckfeder 7 eingeschobenen Schlagankerstößel 6, ferner mit der auf dem Schlagankerstößel 6 sitzenden Magnetanordnung, die aus unmagnetischer Scheibe 10, Polplatte 9, Dauermagnet 8 und Magnetjoch 11 besteht und unter Einschluß der Scheibe 10 mit der Polplatte 9 am Magnetkern 4 anliegt, zu einer Montageeinheit zusammengefügt wird, die auch die Auslöserspule 2 umfaßt und zusammen mit dieser unter Einschluß der Dämpferdruckfeder 18 und der Gleithülse 14 auf dem Schaft des Schlagankerstößels 6 mittels des Spannringes 30 gesichert wird.When assembling such a quick release 1 can therefore be carried out in a simple manner so that the lower pole plate 5 with the sleeve coil-shaped magnetic core 4 passing through the release coil 2 and the hammer plunger 6 inserted into the sleeve-shaped opening 24 on the magnetic core 4 together with the storage pressure spring 7, further with the on the impact plunger 6 seated magnet assembly, which consists of non-magnetic disc 10, pole plate 9, permanent magnet 8 and magnetic yoke 11 and including the disc 10 with the pole plate 9 on the magnetic core 4, is assembled into an assembly unit, which also includes the trigger coil 2 and is secured together with this including the damper compression spring 18 and the sliding sleeve 14 on the shaft of the plunger 6 by means of the clamping ring 30.

Diese aus den vorstehend aufgezählten Bauteilen bestehende Montageeinheit kann in die zylindrische Öffnung 25 am Gehäuse 3 des Schnellauslösers 1 von der Gehäuseunterseite her eingeschoben werden bis zum Anschlag der unteren Polplatte 5 an einem von der Gehäuseinnenwand hervorspringenden Absatz 26, woraufhin die Polplatte 5 am unteren Ende des Gehäuses verkörnt wird, um anschließend die Abdeckkappe 13 der Kunststoffkappe 12 am gegenüberliegenden Ende mit der Gleithülse 14 fest zu verbinden, womit der Zusammenbau des Schnellauslösers bereits beendet ist.This assembly unit consisting of the components listed above can be inserted into the cylindrical opening 25 on the housing 3 of the quick release 1 from the underside of the housing are up to the stop of the lower pole plate 5 on a protruding from the housing inner shoulder 26, whereupon the pole plate 5 is grained at the lower end of the housing, in order to then firmly connect the cover cap 13 of the plastic cap 12 at the opposite end to the sliding sleeve 14, whereby the Assembly of the quick release is already finished.

Claims (11)

  1. Electromagnetic high-speed circuit breaker for electric switching devices with a casing (3) made of ferromagnetic material, with a pole flange (5) forming the lower end, with a permanent magnet (8) having the form of an annular disk and with an impact armature plunger (6) being used for the operation of a switch or a similar device and being surrounded with an electrical trip coil (2) with load current flowing through its windings and with an energy-storage compression spring (7) that supports the movement of impact armature plunger (6) into the released position, wherein a magnetic core (4) in the form of a tubular barrel made of ferromagnetic material rises from the lower pole flange (5) and extends through the entire length of trip coil (2) in a coaxial way, wherein impact armature plunger (6) consists of a nonmagnetic material and wherein the permanent magnet (8) is arranged on the impact armature plunger (6) above trip coil (2) and presents an air gap (20) in front of the walling (3a, 21) of casing (3) in such a way that the magnetic circuit (22) is closed by permanent magnet (8) via magnetic core (4), lower pole flange (5) and a lower part (3a) of the walling of casing (3) surrounding trip coil (2) in the loaded condition of the high-speed circuit breaker and that the magnetic circuit (22a) is short-circuited between permanent magnet (8) and an upper and narrower part (21) of the walling of casing (3) extending in the axial prolongation of trip coil (2) in the unstressed or released condition.
  2. Electromagnetic high-speed circuit breaker as claimed in claim 1, wherein the impact armature plunger (6) presents a limit stop (6a) in order to carry the permanent magnet (8) along in the release direction (6b) of the impact armature plunger (6).
  3. Electromagnetic high-speed circuit breaker as claimed in claim 1, wherein the impact armature plunger (6) is guided in such a way that it can be displaced coaxially in the way of a telescope against the pressure exerted by the energy-storage compression spring (7) in the magnetic core (4) rising from the lower pole flange (5) of the casing (3).
  4. Electromagnetic high-speed circuit breaker as claimed in claim 1, wherein a helical compression spring is arranged as energy-storage compression spring (7) between lower pole flange (5) and the lower end of impact armature plunger (6) in the barrel-type magnetic core (4).
  5. Electromagnetic high-speed circuit breaker as claimed in any claim 1 through 4, wherein the permanent magnet (8) is located on the impact armature plunger (6) between a ferromagnetic pole flange (9) and a disk-shaped magnetic frame (11) made of ferromagnetic material.
  6. Electromagnetic high-speed circuit breaker as claimed in any claim 1 through 5, wherein the permanent magnet (8) or respectively the arrangement of permanent magnet (8), ferromagnetic pole flange (9) and magnetic frame (11) is provided with a thin disk (10) made of nonmagnetic material and used as a means for damping for the support of the pole flange (9) on the front-side end of magnetic core (4).
  7. Electromagnetic high-speed circuit breaker as claimed in any claim 1 through 6, wherein the casing (3) has a cylindrical neck (15), which is located above the trip coil (2), has a smaller diameter, forms the upper part (21) of the wall of the casing (3), stands back towards the inside with regard to the permanent magnet (8) and surrounds the latter or its magnetic frame (11) with an annular air gap (20) extending over part of its height in such a way that the neck (15) surrounds the permanent magnet (8) over its entire length or respectively height in the released condition of the high-speed circuit breaker (1) and that the magnetic circuit (22a) is short-circuited immediately by the permanent magnet (8) via the wall (21) of the casing neck (15).
  8. Electromagnetic high-speed circuit breaker as claimed in any claim 1 through 7, wherein the casing (3) is provided with a synthetic cover (12), which extends over the cylindrical neck (14) of the casing (3) at the upper end of impact armature plunger (6) and which is associated with a slide bush (14), that can be displaced on the shaft of the impact armature plunger (6) up to a limit stop and against the pressure exerted by a damping compression spring (18) supported on the permanent magnet (8) or respectively on the magnetic frame (11) of the permanent magnetic arrangement, and that presents a skirt (16) protruding towards the outside and coming to rest upon an abutment projection (17) directed towards the inside at the upper end of the casing neck (15) under the action of the damping compression spring (18) in the released position of the high-speed circuit breaker (1).
  9. Electromagnetic high-speed circuit breaker as claimed in claim 8, wherein the distance between the lower front side of slide bush (14) and the permanent magnet (8) or the magnetic frame (11) and the top surface (23) of casing neck (15) and also the distance between cover cap (13) or synthetic cover (12) and the top surface (23) of casing neck (15) are dimensioned in such a way in the loaded position of the high-speed circuit breaker that the synthetic cover (12) can travel the additional distance (16) together with slide bush (14) against the pressure exerted by damping compression spring (18) and up to the limit stop of the slide bush (14) on the permanent magnet (8) or on the magnetic frame (11).
  10. Electromagnetic high-speed circuit breaker as claimed in claims 8 and 9, wherein the slide bush (14) is secured by means of a straining ring (30) under the pressure exerted by damping compression spring (18) and provided with a limit stop at the shaft end of the impact armature plunger (6).
  11. Electromagnetic high-speed circuit breaker as claimed in claims 1 through 10, wherein the lower pole flange (5) forms a subassembly, which consists of the barrel-type magnetic core (4) extending through the trip coil (2), of the impact armature plunger (6) inserted into the barrel-type opening- (24) in the magnetic core (4) together with energy-storage compression spring (7), and, furthermore, of the magnetic arrangement located on the impact armature plunger (6), comprising pole flange (9) with nonmagnetic disk (10), permanent magnet (8) and magnetic frame (11) and resting on the magnetic core (4) via pole flange (9) including nonmagnetic disk (10), and of slide bush (14) provided for synthetic cover (12) and secured including damping compression spring (18) by means of straining ring (30) on the shaft of the impact armature plunger (6) in addition to this, and which can be inserted into the cylindrical opening (25) of the casing (3) of high-speed circuit breaker (1) by entering from the bottom of the casing and going up to the limit stop of the lower pole flange (5) at a neck (26) projecting from the inner wall of the casing, after which the pole flange (5) is staked at the lower end of the casing (3) while the synthetic cover (12) is connected firmly to the slide bush (14) at theopposite end subsequently to this.
EP91101015A 1990-02-13 1991-01-26 Fast electromagnetic trip unit for electrical switching devices Expired - Lifetime EP0442311B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4004359A DE4004359A1 (en) 1990-02-13 1990-02-13 Electro-magnetic quick-release mechanism for electric switch - has magnetic circuit incorporating bottom wall section of ferromagnetic housing of quick-release mechanism
DE4004359 1990-02-13

Publications (3)

Publication Number Publication Date
EP0442311A2 EP0442311A2 (en) 1991-08-21
EP0442311A3 EP0442311A3 (en) 1992-08-19
EP0442311B1 true EP0442311B1 (en) 1995-05-10

Family

ID=6400026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101015A Expired - Lifetime EP0442311B1 (en) 1990-02-13 1991-01-26 Fast electromagnetic trip unit for electrical switching devices

Country Status (3)

Country Link
EP (1) EP0442311B1 (en)
DE (2) DE4004359A1 (en)
ES (1) ES2073597T3 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19646243C1 (en) * 1996-11-08 1997-10-23 Siemens Ag Electromagnetic difference current circuit-breaker release
DE4121610C2 (en) * 1991-06-29 1993-10-14 Kloeckner Moeller Gmbh Tripping and signaling device for an additional module, especially for earth fault detection
US5172090A (en) * 1991-10-08 1992-12-15 General Electric Company Electronic line sectionalizer with resettable actuator
US6424244B1 (en) 2000-03-15 2002-07-23 Tyco Electronics Amp, Gmbh Magnetic switch
EP1137032A3 (en) * 2000-03-15 2003-07-16 Tyco Electronics AMP GmbH Magnetic switch
US8581682B2 (en) 2009-10-07 2013-11-12 Tyco Electronics Corporation Magnet aided solenoid for an electrical switch
KR101533002B1 (en) * 2011-05-31 2015-07-01 오므론 가부시키가이샤 Electromagnetic relay
JP6009340B2 (en) * 2012-12-12 2016-10-19 三菱電機株式会社 Circuit breaker and electromagnetic trip device
JP6484911B2 (en) * 2014-08-28 2019-03-20 株式会社不二越 Permanent magnet built-in solenoid
CN112017919B (en) * 2020-10-26 2021-01-12 广东电网有限责任公司 External mechanical manual brake separating device
CN112768842B (en) * 2021-01-11 2022-09-20 江苏科耐尔新能源科技有限公司 Lithium battery assembly's dismouting structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2344948A1 (en) * 1976-03-15 1977-10-14 Merlin Gerin Release mechanism for contact breaker - has permanent magnet lock and electromagnet to release armature and striking pin
DE8806830U1 (en) * 1988-05-25 1988-07-28 Mangold, Victor, Dr. Backup

Also Published As

Publication number Publication date
DE59105408D1 (en) 1995-06-14
EP0442311A3 (en) 1992-08-19
EP0442311A2 (en) 1991-08-21
ES2073597T3 (en) 1995-08-16
DE4004359A1 (en) 1991-08-14

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