EP1132929B1 - Permanent magnetic drive for an electrical switching device - Google Patents

Permanent magnetic drive for an electrical switching device Download PDF

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Publication number
EP1132929B1
EP1132929B1 EP20010104992 EP01104992A EP1132929B1 EP 1132929 B1 EP1132929 B1 EP 1132929B1 EP 20010104992 EP20010104992 EP 20010104992 EP 01104992 A EP01104992 A EP 01104992A EP 1132929 B1 EP1132929 B1 EP 1132929B1
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EP
European Patent Office
Prior art keywords
permanent
armature
drive according
magnet
return path
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
EP20010104992
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German (de)
French (fr)
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EP1132929A1 (en
Inventor
Edgar Dr. Dullni
Christian Dr. Reuber
Brian A. R. Mckean
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ABB Technology AG
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ABB Technology AG
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Publication of EP1132929A1 publication Critical patent/EP1132929A1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6662—Operating arrangements using bistable electromagnetic actuators, e.g. linear polarised electromagnetic actuators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2209—Polarised relays with rectilinearly movable armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets

Definitions

  • the invention relates to a permanent magnetic drive for an electrical switching device.
  • Such an electromagnetic drive is for example from the DE 197 09 089 A1 known.
  • This permanent magnetic drive has a closed, annular yoke, which is composed of laminated sheets and has two mutually spaced longitudinal webs on which alsfactzu classified two pole pieces are formed.
  • An armature runs parallel to the longitudinal webs and there are two permanent magnets between the free ends of the pole shoes and the armature. Coils are arranged on both sides of the permanent magnets and, depending on the control of the coils, the armature is moved from a position to a second position in which magnetic fields are generated in the yoke by the coils, which interact with the permanent magnetic fields to move back and forth to create.
  • the armature has two extensions on the front side, which are guided in the transverse webs of the yoke; one of the extensions passes through the adjacent crosspiece and is connected to the movable contact stem of a vacuum switch.
  • bistable actuator drive for different rated short-circuit breaking currents to be adjusted, then the width is varied, are mounted on both sides in parallel to the other lamellar more laminations.
  • large rated short-circuit breaking currents however, unfavorably large and heavy akutatoren arise due to the increased number of lamella plates.
  • the object of the invention is to further improve the permanent magnetic drive of the type mentioned so that it can also be used for larger design Kurzappelausschaltströme without changing the width and thus to increase the weight significantly.
  • a second permanent magnet arrangement is provided with a movable part according to the invention, wherein the movable part is connected to the armature, so that is moved and acted upon by the second permanent magnet arrangement of the armature in the direction of switching.
  • the Fig. 1 shows a view of a permanent magnetic drive 10.
  • This permanent magnetic drive 10 has a closed ring as a yoke 11, which consists of Laminated sheets is composed, the laminations are stacked perpendicular to the plane.
  • the yoke 11 comprises two mutually parallel longitudinal webs 12 and 13 and perpendicular thereto transverse webs 14 and 15. Approximately in the central region of the longitudinal webs 12 and 13 projecting pole pieces 16 and 17 are formed on each other, which end at a distance defined below from each other.
  • an armature 18 Perpendicular to the transverse webs 14 and 15 and in the central axis of an armature 18 is slidably disposed, which may for example be formed as in the DE 197 09 089 A1 described.
  • This armature 18 is guided in the magnetic yoke 11 via armature guide elements 19 and 20, which engage in the guide elements 21 and 22 in the transverse webs 14 and 15.
  • At the guide extension 20 includes the movable contact stem of a vacuum switch, as has become known from the above-mentioned German patent application.
  • Such a permanent magnetic drive is adapted for a particular rated short-circuit breaking current; should higher breaking currents can be switched, larger forces are applied. For this it is necessary to both sides of the Yoke more lamellae accommodate, with the lamellar plates are stacked perpendicular to the drawing plane.
  • a second permanent magnet assembly 27 which has a housing 28 which serves as a yoke housing and is made of magnetic material.
  • the housing 28 has two recesses 29 and 30, in which permanent magnets 31 and 32 are used; the permanent magnets may also be annular, wherein the recess 29, 30 may be an annular recess.
  • the housing 28 is fixedly connected to the guide pin 19 and between the permanent magnets 31 and 32 and the outer surface of the transverse web 14 is no further additional component.
  • the force to be generated by the contact pressure springs depends on the rated short-circuit breaking current, it is possible with the second permanent magnet arrangement to provide an actuator, for example for a rated short-circuit breaking current of 31.5 kA, without additional laminations even for a short-circuit breaking current of 40 kA to use.
  • a corresponding adjusting thread Between the guide pin 19 and the housing 28 may be provided a corresponding adjusting thread, so that the air gap, which in the position according to Fig. 2 between the housing 28 and the upper transverse web 14 results, can be varied thereby.
  • adjustment elements are threaded spindles with nut and lock nut, wherein the nut may be the housing 28 at the same time, not known.
  • a U-shaped holding element 35 is provided or fixed, the legs 36, 37 projecting from the crossbar 14 away.
  • the holding element can also be designed annular.
  • a permanent magnet 38 is inserted, which is screwed by means of mechanical connections, such as a nut 39 against the bottom of the U-shaped support member 35.
  • the permanent magnet 38 may also be designed annular.
  • a yoke 40 is connected, which is movable according to the double arrow direction P, so that in the in Fig. 3 shown position of the permanent magnet 38 has no effect, whereas upon impact of the yoke 40 on the free ends of the legs 36 and 37 results in a corresponding magnetic flux distribution, which in the same way helps to support the switch-on and increase the static holding force.
  • the permanent magnet 38 is immovable and stationary; As a result, it is not subject to any impact load or only to a slightly impacting load, which also has advantages for the life of the permanent magnet.

Description

Die Erfindung betrifft einen permanent magnetischen Antrieb für ein elektrisches Schaltgerät.The invention relates to a permanent magnetic drive for an electrical switching device.

Ein derartiger elektromagnetischer Antrieb ist beispielsweise aus der DE 197 09 089 A1 bekannt geworden.Such an electromagnetic drive is for example from the DE 197 09 089 A1 known.

Dieser permanent magnetische Antrieb besitzt ein geschlossenes, ringförmiges Joch, welches aus lamellierten Blechen zusammengesetzt ist und zwei im Abstand zueinander verlaufende Längsstege aufweist, an denen aufeinanderzuweisend zwei Polschuhe angeformt sind. Parallel zu den Längsstegen verläuft ein Anker und zwischen den freien Enden der Polschuhe und dem Anker befinden sich zwei Permanentmagnete. Beidseitig zu den Permanentmagneten sind Spulen angeordnet, und je nach Ansteuerung der Spulen wird der Anker aus einer Stellung in eine zweite Stellung verbracht, in dem durch die Spulen magnetische Felder im Joch erzeugt werden, die mit den Permanentmagnetfeldern zusammenwirken, um eine hin und her Bewegung zu erzeugen.This permanent magnetic drive has a closed, annular yoke, which is composed of laminated sheets and has two mutually spaced longitudinal webs on which aufeinanderzuweisend two pole pieces are formed. An armature runs parallel to the longitudinal webs and there are two permanent magnets between the free ends of the pole shoes and the armature. Coils are arranged on both sides of the permanent magnets and, depending on the control of the coils, the armature is moved from a position to a second position in which magnetic fields are generated in the yoke by the coils, which interact with the permanent magnetic fields to move back and forth to create.

Der Anker besitzt stirnseitig zwei Fortsätze, die in den Querstegen des Joches geführt sind; der eine der Fortsätze durchgreift den benachbarten Quersteg und ist mit dem beweglichen Kontaktstengel eines Vakuumschalters verbunden.The armature has two extensions on the front side, which are guided in the transverse webs of the yoke; one of the extensions passes through the adjacent crosspiece and is connected to the movable contact stem of a vacuum switch.

Wenn der hier beschriebene, als bistabiler Aktuator bezeichnete Antrieb für unterschiedliche Bemessungs-Kurzschlußausschaltströme angepaßt werden soll, dann wird die Breite variiert, in dem parallel zu den einzelnen Lamellenblechen beidseitig weitere Lamellenbleche angebracht werden. Für große Bemessungs-Kurzschlußausschaltströme ergeben sich allerdings unvorteilhaft große und schwere Akutatoren auf Grund der vergrößerten Anzahl der Lamellenbleche.If the described here, referred to as a bistable actuator drive for different rated short-circuit breaking currents to be adjusted, then the width is varied, are mounted on both sides in parallel to the other lamellar more laminations. For large rated short-circuit breaking currents, however, unfavorably large and heavy akutatoren arise due to the increased number of lamella plates.

Aufgabe der Erfindung ist es, den permanent magnetischen Antrieb der eingangs genannten Art so weiter zu verbessern, daß er auch für größere Bemessungs-Kürzschlußausschaltströme verwendet werden kann, ohne dabei die Breite zu verändern und damit das Gewicht wesentlich zu vergrößern.The object of the invention is to further improve the permanent magnetic drive of the type mentioned so that it can also be used for larger design Kurzschlussausschaltströme without changing the width and thus to increase the weight significantly.

Diese Aufgabe wird erfindungsgemäß gelöst durch die Merkmale des Anspruches 1.This object is achieved by the features of claim 1.

Danach wird erfindungsgemäß eine zweite Permanentmagnetanordnung mit einem beweglichen Teil vorgesehen, wobei das bewegliche Teil mit dem Anker verbunden ist, so daß durch die zweite Permanentmagnetanordnung der Anker in Richtung Einschalten bewegt und beaufschlagt ist.Thereafter, a second permanent magnet arrangement is provided with a movable part according to the invention, wherein the movable part is connected to the armature, so that is moved and acted upon by the second permanent magnet arrangement of the armature in the direction of switching.

Weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung ergeben sich aus den weiteren Unteransprüchen.Further advantageous embodiments and improvements of the invention will become apparent from the other dependent claims.

Anhand der Zeichnung, in der zwei Ausführungsbeispiele der Erfindung dargestellt sind, sollen die Erfindung selbst sowie weitere vorteilhafte Ausgestaltungen und Verbesserungen und weitere Vorteile näher erläutert und beschrieben werden.Reference to the drawing, are shown in the two embodiments of the invention, the invention itself and other advantageous refinements and improvements and other advantages to be explained and described.

Es zeigen

Fig 1 und 2
eine erste Ausführungsform eines permanent magnetischen Antriebes in zwei Schaltstellungen und
Fig 3
eine Variante für den permanent magnetischen Antrieb.
Show it
FIGS. 1 and 2
a first embodiment of a permanent magnetic drive in two switching positions and
Fig. 3
a variant for the permanent magnetic drive.

Die Fig 1 zeigt eine Ansicht eines permanent magnetischen Antriebs 10. Dieser permanent magnetische Antrieb 10 besitzt ein als Ring geschlossenes Joch 11, welches aus Lamellenblechen zusammengesetzt ist, wobei die Lamellenbleche senkrecht zur Zeichenebene aufgeschichtet sind. Das Joch 11 umfaßt zwei parallel zueinanderverlaufende Längsstege 12 und 13 sowie senkrecht dazu verlaufende Querstege 14 und 15. Etwa im mittleren Bereich der Längsstege 12 und 13 sind aufeinanderzu vorspringend Polschuhe 16 und 17 angeformt, die in einem weiter unten definierten Abstand voneinander enden.The Fig. 1 shows a view of a permanent magnetic drive 10. This permanent magnetic drive 10 has a closed ring as a yoke 11, which consists of Laminated sheets is composed, the laminations are stacked perpendicular to the plane. The yoke 11 comprises two mutually parallel longitudinal webs 12 and 13 and perpendicular thereto transverse webs 14 and 15. Approximately in the central region of the longitudinal webs 12 and 13 projecting pole pieces 16 and 17 are formed on each other, which end at a distance defined below from each other.

Senkrecht zu den Querstegen 14 und 15 und in deren Mittelachse ist ein Anker 18 verschiebbar angeordnet, der beispielsweise so ausgebildet sein kann wie in der DE 197 09 089 A1 beschrieben. Dieser Anker 18 ist über Ankerführungselemente 19 und 20, die Führungselemente 21 und 22 in den Querstegen 14 und 15 durchgreifen, im Magnetjoch 11 geführt.Perpendicular to the transverse webs 14 and 15 and in the central axis of an armature 18 is slidably disposed, which may for example be formed as in the DE 197 09 089 A1 described. This armature 18 is guided in the magnetic yoke 11 via armature guide elements 19 and 20, which engage in the guide elements 21 and 22 in the transverse webs 14 and 15.

Zwischen den Querstegen 14 bzw. 15 und den Polschuhen 16, 17 sind Spulen 23, 24 eingesetzt. In den Zwischenbereich zwischen dem Anker 18 und den freien inneren Enden der Polschuhe 16 und 17 sind Permanentmagnete 25 und 26 eingesetzt, die mit den Spulen 23 und 24 in bestimmter Weise zusammenwirken.Between the transverse webs 14 and 15 and the pole pieces 16, 17 coils 23, 24 are used. In the intermediate region between the armature 18 and the free inner ends of the pole shoes 16 and 17 permanent magnets 25 and 26 are used, which cooperate with the coils 23 and 24 in a certain way.

An dem Führungsfortsatz 20 schließt der bewegliche Kontaktstengel eines Vakuumsschalters an, wie aus der oben erwähnten deutschen Offenlegungsschrift bekannt geworden ist.At the guide extension 20 includes the movable contact stem of a vacuum switch, as has become known from the above-mentioned German patent application.

Bei Erregung der Spule 24 wird der Anker aus der in Fig 1 gezeigten Stellung in die in Fig 2 gezeigte Stellung entsprechend der Doppelpfeilrichtung P verschoben, wobei die Fig 1 die sogenannte Ausschaltstellung und die Fig 2 die Einschaltstellung zeigt: Bei der Ausschaltstellung befindet sich der Anker 18 an dem Quersteg 14, der dem Kontaktstengel entgegengesetzt liegt, wogegen bei der Einschaltstellung der Anker 18 gegen den dem Schaltgerät benachbarten Quersteg 15 anliegt.Upon energization of the coil 24, the armature of the in Fig. 1 shown position in the in Fig. 2 shown shifted position according to the double arrow direction P, wherein the Fig. 1 the so-called off position and the Fig. 2 the switch-on position shows: In the off position, the armature 18 is located on the crosspiece 14, which is opposite to the contact stem, whereas in the closed position, the armature 18 abuts against the crosspiece 15 adjacent to the switching device.

Ein derartiger permanent magnetischer Antrieb ist für einen bestimmten Bemessungs-Kurzschlußausschaltstrom angepaßt; sollen höhere Ausschaltströme geschaltet werden können, sind größere Kräfte aufzubringen. Dazu ist es erforderlich, beidseitig zu dem Joch mehr Lamellenbleche unterzubringen, wobei die Lamellenbleche senkrecht zur Zeichenebene gestapelt werden.Such a permanent magnetic drive is adapted for a particular rated short-circuit breaking current; should higher breaking currents can be switched, larger forces are applied. For this it is necessary to both sides of the Yoke more lamellae accommodate, with the lamellar plates are stacked perpendicular to the drawing plane.

Zur Verbesserung und zur Vereinfachung des Antriebes ist eine zweite Permanentmagnetanordnung 27 vorgesehen, die ein Gehäuse 28 aufweist, das als Rückschlußgehäuse dient und aus magnetischem Material hergestellt ist. Das Gehäuse 28 besitzt zwei Vertiefungen 29 und 30, in denen Permanentmagnete 31 und 32 eingesetzt sind; die Permanentmagnete können auch ringförmig ausgebildet sein, wobei die Vertiefung 29, 30 eine Ringvertiefung sein kann. Das Gehäuse 28 ist mit dem Führungszapfen 19 fest verbunden und zwischen den Permanentmagneten 31 und 32 und der Außenfläche des Quersteges 14 befindet sich kein weiteres zusätzliches Bauelement.To improve and simplify the drive, a second permanent magnet assembly 27 is provided, which has a housing 28 which serves as a yoke housing and is made of magnetic material. The housing 28 has two recesses 29 and 30, in which permanent magnets 31 and 32 are used; the permanent magnets may also be annular, wherein the recess 29, 30 may be an annular recess. The housing 28 is fixedly connected to the guide pin 19 and between the permanent magnets 31 and 32 and the outer surface of the transverse web 14 is no further additional component.

Wenn nun der Antrieb aus der in Fig 1 gezeigten Ausschaltstellung in die in Fig 2 dargestellte Einschaltstellung verbracht wird, dann bewegen sich die Permanentmagnete 31 und 32 auf den oberen Quersteg 14 des Joches 11 zu, wobei die Magnetanordnung 27 mechanische Energie an das Antriebssystem des Leistungsschalters zusätzlich mit abgibt, da die Magnetanordnung 27 von dem Quersteg 14 angezogen wird. Außerdem erhöht in der eingeschalteten Stellung, siehe Fig 2, der Zusatzmagnet die statische Haltekraft, die bei einem Vakuum-Leistungschalter für das Zusammendrücken von Kontaktdruckfedern erforderlich ist. Da die Kraft, die von den Kontaktdruckfedern erzeugt werden soll, von dem Bemessungs-Kurzschlußausschaltstrom abhängt, ist es mit der zweiten Permanentmagnetanordnung möglich, einen beispielsweise für einen Bemessungskurzschlußausschaltstrom von 31,5 kA bemessenen Aktuator ohne zusätzliche Lamellenbleche auch für einen Kurzschlußausschaltstrom von 40 kA zu benutzen.If now the drive from the in Fig. 1 shown off position in the in Fig. 2 shown switching position, then move the permanent magnets 31 and 32 to the upper transverse web 14 of the yoke 11, wherein the magnet assembly 27 mechanical energy to the drive system of the circuit breaker additionally gives off, since the magnet assembly 27 is attracted by the crossbar 14. Also raised in the on position, see Fig. 2 , the additional magnet, the static holding force required in a vacuum circuit breaker for compressing contact springs. Since the force to be generated by the contact pressure springs depends on the rated short-circuit breaking current, it is possible with the second permanent magnet arrangement to provide an actuator, for example for a rated short-circuit breaking current of 31.5 kA, without additional laminations even for a short-circuit breaking current of 40 kA to use.

Zwischen dem Führungszapfen 19 und dem Gehäuse 28 kann ein entsprechendes Einstellgewinde vorgesehen sein, so daß der Luftspalt, der sich in der Stellung gemäß Fig. 2 zwischen dem Gehäuse 28 und dem oberen Quersteg 14 ergibt, dadurch variiert werden kann. Derartige Einstellelemente sind Gewindespindeln mit Mutter und Kontermutter, wobei die Mutter gleichzeitig das Gehäuse 28 sein kann, nicht bekannt.Between the guide pin 19 and the housing 28 may be provided a corresponding adjusting thread, so that the air gap, which in the position according to Fig. 2 between the housing 28 and the upper transverse web 14 results, can be varied thereby. Such adjustment elements are threaded spindles with nut and lock nut, wherein the nut may be the housing 28 at the same time, not known.

Da bei der Ausführung nach den Figuren 1 und 2 die Permanentmagnete 31, 32 in Bewegung sind und im Falle einer Ausschalthandlung auch stoßend gegen den oberen Quersteg 14 aufschlagen, ist es sinnvoll, eine Lösung gemäß Fig 3 zu verwenden. Am oberen Quersteg 14 des Joches 11, auf dessen Außenseite, ist ein U-förmiges Halteelement 35 vorgesehen bzw. befestigt, dessen Schenkel 36, 37 von dem Quersteg 14 weg vorspringen. Das Halteelement kann auch ringförmig ausgeführt sein. Zwischen die Schenkel 36 und 37 ist ein Permanentmagnet 38 eingesetzt, der mittels mechanischer Verbindungen, beispielsweise einer Mutter 39 gegen den Boden des U-förmigen Halteelementes 35 festgeschraubt ist. Der Permanentmagnet 38 kann auch ringförmig ausgeführt sein. Mit dem Führungszapfen 19 über ein Verbindungszapfen 41 ist ein Rückschlußteil 40 verbunden, welches entsprechend der Doppel-Pfeilrichtung P bewegbar ist, so daß in der in Fig 3 gezeigten Stellung der Permanentmagnet 38 keine Wirkung besitzt, wogegen beim Auftreffen des Rückschlußteiles 40 auf die freien Enden der Schenkel 36 und 37 eine entsprechende Magnetflußverteilung ergibt, die in gleicher Weise dazu beiträgt, die Einschaltbewegung zu unterstützen und die statische Haltekraft zu erhöhen. Bei der Anordnung gemäß Fig 3 ist der Permanentmagnet 38 unbeweglich und ortsfest angeordnet; dadurch ist er stoßender Belastung nicht bzw. nur einer geringfügig stoßenden Belastung unterworfen was für die Lebensdauer des Permanentmagneten auch Vorteile besitzt.As in the execution of the FIGS. 1 and 2 the permanent magnets 31, 32 are in motion and in the event of a Ausschaltehandlung also butting against the upper Turn crossbar 14 open, it makes sense, a solution according to Fig. 3 to use. At the upper transverse web 14 of the yoke 11, on its outer side, a U-shaped holding element 35 is provided or fixed, the legs 36, 37 projecting from the crossbar 14 away. The holding element can also be designed annular. Between the legs 36 and 37, a permanent magnet 38 is inserted, which is screwed by means of mechanical connections, such as a nut 39 against the bottom of the U-shaped support member 35. The permanent magnet 38 may also be designed annular. With the guide pin 19 via a connecting pin 41, a yoke 40 is connected, which is movable according to the double arrow direction P, so that in the in Fig. 3 shown position of the permanent magnet 38 has no effect, whereas upon impact of the yoke 40 on the free ends of the legs 36 and 37 results in a corresponding magnetic flux distribution, which in the same way helps to support the switch-on and increase the static holding force. In the arrangement according to Fig. 3 the permanent magnet 38 is immovable and stationary; As a result, it is not subject to any impact load or only to a slightly impacting load, which also has advantages for the life of the permanent magnet.

Claims (10)

  1. Permanent-magnet drive (10) for an electric switching device, in particular for a vacuum circuit breaker, having a laminated, rectangular yoke (11) in which an armature (18) which is coupled to the moving contact piece of the switching device is linearly guided, having pole shoes (16, 17) pointing towards each other on the yoke, which protrude towards the armature, having a first permanent-magnet arrangement (25, 26), the permanent magnets of which are arranged between the pole shoes and the armature, and having two coils (23, 24), which are arranged on both sides of the permanent magnet and interact with a magnetic flux generated in the yoke and armature by the permanent magnet, characterized in that a second permanent-magnet arrangement (27) having a movable part is provided, the said part being connected (19) to the armature (18) such that, by means of the second permanent-magnet arrangement, the armature is moved and loaded in the "on" direction.
  2. Drive according to Claim 1, characterized in that the second permanent-magnet arrangement is arranged outside the yoke.
  3. Drive according to Claim 2, characterized in that the second permanent-magnet arrangement is arranged on the side of the yoke located opposite the coupling point between the moving contact piece and the armature.
  4. Drive according to Claim 3, characterized in that the permanent magnet is accommodated in a housing part which is connected to the armature, so that the permanent magnet of the second permanent-magnet arrangement can move with the armature.
  5. Drive according to Claim 3, characterized in that the permanent magnet of the second permanent-magnet arrangement is fixed in a stationary position in a first return path element, and in that a second movable return path element, which is firmly connected to the armature, interacts with the first return path element.
  6. Drive according to one of Claims 4 and 5, characterized in that at least the first return path element is U-shaped and the second return path element overlaps the free limbs of the first return path element.
  7. Drive according to one of Claims 4 and 5, characterized in that at least the second return path element is U-shaped.
  8. Drive according to one of the preceding claims, characterized in that an air gap is provided between the second permanent-magnet arrangement and the yoke.
  9. Drive according to one of Claims 1 to 7, characterized in that an air gap is provided between the return path elements themselves.
  10. Drive according to one of Claims 8 and 9, characterized in that the air gaps are adjustable.
EP20010104992 2000-03-10 2001-03-01 Permanent magnetic drive for an electrical switching device Expired - Lifetime EP1132929B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10011342 2000-03-10
DE2000111342 DE10011342A1 (en) 2000-03-10 2000-03-10 Permanent magnetic drive for electric switching device has permanent magnet between opposing pole shoes of magnetic yoke and second permanent magnet device for moving armature in switching in direction

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EP1132929A1 EP1132929A1 (en) 2001-09-12
EP1132929B1 true EP1132929B1 (en) 2008-07-16

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US10240881B1 (en) 2017-03-08 2019-03-26 Louis M. Galie Fast action shock invariant magnetic actuator for firearms
US10670361B2 (en) 2017-03-08 2020-06-02 Sturm, Ruger & Company, Inc. Single loop user-adjustable electromagnetic trigger mechanism for firearms
US10690430B2 (en) 2017-03-08 2020-06-23 Sturm, Ruger & Company, Inc. Dynamic variable force trigger mechanism for firearms
US10900732B2 (en) 2017-03-08 2021-01-26 Sturm, Ruger & Company, Inc. Electromagnetic firing system for firearm with firing event tracking
US11300378B2 (en) 2017-03-08 2022-04-12 Sturm, Ruger & Company, Inc. Electromagnetic firing system for firearm with interruptable trigger control

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DE10146899A1 (en) * 2001-09-24 2003-04-10 Abb Patent Gmbh Electromagnetic actuator, in particular electromagnetic drive for a switching device
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US10228208B2 (en) 2017-03-08 2019-03-12 Sturm, Ruger & Company, Inc. Dynamic variable force trigger mechanism for firearms
US10240881B1 (en) 2017-03-08 2019-03-26 Louis M. Galie Fast action shock invariant magnetic actuator for firearms
US10663244B1 (en) 2017-03-08 2020-05-26 Sturm, Ruger & Company, Inc. Fast action shock invariant magnetic actuator for firearms
US10670361B2 (en) 2017-03-08 2020-06-02 Sturm, Ruger & Company, Inc. Single loop user-adjustable electromagnetic trigger mechanism for firearms
US10690430B2 (en) 2017-03-08 2020-06-23 Sturm, Ruger & Company, Inc. Dynamic variable force trigger mechanism for firearms
US10900732B2 (en) 2017-03-08 2021-01-26 Sturm, Ruger & Company, Inc. Electromagnetic firing system for firearm with firing event tracking
US11300378B2 (en) 2017-03-08 2022-04-12 Sturm, Ruger & Company, Inc. Electromagnetic firing system for firearm with interruptable trigger control

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DE10011342A1 (en) 2001-09-13
EP1132929A1 (en) 2001-09-12

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