EP1473751B1 - Electromagnetic trip device - Google Patents

Electromagnetic trip device Download PDF

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Publication number
EP1473751B1
EP1473751B1 EP20030009932 EP03009932A EP1473751B1 EP 1473751 B1 EP1473751 B1 EP 1473751B1 EP 20030009932 EP20030009932 EP 20030009932 EP 03009932 A EP03009932 A EP 03009932A EP 1473751 B1 EP1473751 B1 EP 1473751B1
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EP
European Patent Office
Prior art keywords
coil
trigger according
armature
spring
section
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 - Fee Related
Application number
EP20030009932
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German (de)
French (fr)
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EP1473751A1 (en
Inventor
Wolfgang Leitl
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Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to ES03009932T priority Critical patent/ES2258182T3/en
Priority to EP20030009932 priority patent/EP1473751B1/en
Priority to DE50302699T priority patent/DE50302699D1/en
Publication of EP1473751A1 publication Critical patent/EP1473751A1/en
Application granted granted Critical
Publication of EP1473751B1 publication Critical patent/EP1473751B1/en
Anticipated expiration legal-status Critical
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/24Electromagnetic mechanisms
    • H01H71/2463Electromagnetic mechanisms with plunger type armatures

Definitions

  • the invention relates to an electromagnetic release, in particular a circuit breaker, with a coil, a displaceable in this armature and a yoke, which is integrally formed with an at least partially engaging in the coil magnetic core, and a spring for tensioning the armature.
  • an electromagnetic trigger is known for example from DE 101 26 851 C1.
  • the DE 101 26 851 C1 known electromagnetic release in particular for a circuit breaker, has an integrally formed with a magnetic yoke magnetic core, which is disposed within the cross section of the trip coil and provided with a central opening for carrying a tappet connected to a movable armature is.
  • a circuit breaker such as a circuit breaker
  • the electromagnetic release is often due to the relatively large diameter of the trip coil that component, which dictates the minimum width of the circuit breaker.
  • the invention has for its object to provide an electromagnetic release, in particular for a circuit breaker, which is constructed particularly narrow with a simple design.
  • This object is achieved by an electromagnetic release with the features of claim 1.
  • This trigger has, in principle comparable to a conventional electromagnetic release with plunger armature, a coil, a movable in this anchor, a magnetic yoke with a core, as well as an anchor with a force against the actuating direction acted upon spring.
  • the anchor and the core of the magnetic yoke is not arranged symmetrically in the cross section of the coil. Rather, the magnetic core has an asymmetrically arranged in the coil cross-section, at least approximately normal to the coil axis aligned core surface, which faces the armature with an anchor surface.
  • This armature surface bends at least approximately at right angles from an armature main body, which is displaceable in the coil parallel to the coil axis. In the coil are thus adjacent to one side of the magnetic core and the other anchor main body.
  • the armature or a cooperating with this plunger thus does not penetrate the magnetic core or the magnetic yoke.
  • Both the armature and the magnetic core are preferably manufactured as single-layer sheet metal components, preferably with the same or similar thickness. Both sheet metal components anchor and core preferably have within the coil on a rectangular cross-section, with the respective narrow sides are opposite. Overall, therefore, the inner height of the approximately rectangular inner cross section of the coil is more than twice, preferably more than three times the inner width.
  • the armature is preferably formed as a one-piece component together with a plunger and penetrates axially the entire coil.
  • one side of the protruding from the coil armature can be used as a plunger for actuating in particular a moving contact and / or a Entklinkungsvortechnisch a circuit breaker, while on the opposite side of the coil from this outstanding part of the anchor is preferably the attachment of the spring.
  • This spring is preferably formed in a particularly space-saving manner as a conical compression spring, which between the coil or another immovable component, in particular a rigid housing structure and an integrally formed on the armature main body spring bearing legs, somewhat asymmetrical to the coil axis, is clamped.
  • the spring may for example be designed as a helical spring or spring of other geometry.
  • the armature main body which also forms the plunger, is displaceable past the magnetic core in the coil.
  • a partition wall of non-magnetic material is preferably arranged between it and the magnet armature within the coil. This partition is in a structurally advantageous manner preferably part of a coil-carrying bobbin.
  • an arc guide rail is preferably formed on the magnet yoke in a manner known per se.
  • a particularly space-saving design is given by the arc guide rail is arranged in cross section at right angles to the magnetic core.
  • a number of Deionbleche an arc extinguishing chamber are thus arranged in this embodiment also at right angles to the magnetic core and the armature. Since typically the width of the Deionbleche is less than the height of the stack formed from the Deionblechen, thus the preferably approximately rectangular coil cross-section is aligned along the given by the standards of the Deionbleche main extension direction of the arc extinguishing chamber.
  • the trigger builds particularly narrow. This makes it possible to accommodate two electromagnetic triggers of the same type next to each other within a standardized housing of a DIN rail mounted device, in particular with a width of 18 mm.
  • Both the armature combined with the plunger and the magnetic yoke combined with the magnetic core are preferably rational manufactured to be produced stamped parts or stamped and bent parts.
  • this part is preferably shaped in such a way that it has an elongate, essentially straight shape in the non-bent state in order to avoid unnecessary waste during punching.
  • the angular offset between the magnetic core and the arc guide rail by 90 ° is still feasible by a crease line is provided between the magnetic core and the arc guide, which includes in the final state of the component with both the magnetic core and the arc guide at an angle of 45 °.
  • the advantage of the invention is, in particular, that by the asymmetrical arrangement of a magnetic core and a magnet armature in a coil of a magnetic release having a substantially rectangular inner cross section whose width almost to the thickness of the one-piece sheet metal parts manufactured parts magnetic core - combined with a magnetic yoke - and anchor - combined with a pestle - is limited.
  • an electromagnetic release 1 of a switching device not shown in detail for example a circuit breaker, motor protection switch, circuit breaker, contactor or relay, preferably in the form of a DIN rail mounted device.
  • Essential components of the trigger 1 are a mounted on a sleeve-shaped bobbin 2 coil 3, a magnetic yoke 4, which is integrally formed with a magnetic core 5, and a displaceable in the coil 3 anchor 6. This also acts as a plunger for actuating a not shown, with a contact piece 7 on the magnetic yoke 4 cooperating moving contact.
  • An end face of the armature 6 projecting out of the coil 3 towards the magnet yoke 4 is referred to as a tappet surface 8.
  • This plunger surface 8 defines an elongate anchor main body 9, which penetrates the entire coil 3 and on the other side by a spring bearing leg 10 which is formed perpendicular to the anchor main body 9 is limited.
  • the spring bearing leg 10 has a nose 11, which serves to attach a spring formed as a conical compression spring 12, on the other hand, is mounted on a rigid structure, not shown, or directly on the bobbin 2 and the armature 6 biases against the actuation direction R.
  • the anchor 6 Upon actuation, ie electromagnetic triggering of the armature 6, an air gap 13 between a magnetic core 5 in the coil 3 bounding, at right angles to the coil axis A aligned core surface 14 and an opposite armature surface 15 is closed.
  • the armature surface 15 is the surface of an armature arm 16 which, as part of the armature 6, bends at right angles from the armature main body 9.
  • the anchor 6 has thus a total of an F-shape with the spring bearing leg 10 and the anchor arm 16 as mutually parallel F-leg.
  • the armature 6 is made as a sheet metal stamped part with a thickness d which corresponds at least approximately to the thickness of the magnetic core 5 and is slightly smaller than the inner width b of the coil 3.
  • the inner height h of the coil 3, however, is substantially given by the sum
  • the core width k corresponds approximately to the width of the armature surface 15 and has direct influence on the magnetic force between the core surface 14 and the armature surface 15.
  • the tappet width s of the armature main body 9, however, is in The core width k, which has a direct influence on the impact force of the magnet armature 6, exceeds the tappet width s by more than 50%.
  • the inner height h of the coil 3 is in the exemplary embodiment more than three times the inner width b. Due to the small inner width b, the total width B of the trigger 1, which only slightly exceeds the width of the coil 3, dimensioned such that two similar triggers 1 side by side in a 18 mm wide housing space.
  • the geometry of the magnetic yoke 4 with the arc guide rail 18 is particularly clear from FIGS. 5a to 5d.
  • Both the arc guide rail 18 and also integrally formed on the magnetic yoke 4 magnetic core 5 are aligned parallel to the coil axis A, but rotated by 90 ° from each other.
  • the magnetic yoke 4 including the magnetic core 5 and the arc guide rail 18 is made as a stamped and bent part from a stamped sheet metal strip, which originally an elongated straight shape.
  • the rotation of the magnetic core relative to the arc guide rail by 90 ° is possible by a crease line 19, which includes a respective 45 ° angle with each of said parts 5,18.
  • a crease line 19 which includes a respective 45 ° angle with each of said parts 5,18.
  • FIGS. 6 to 9 An alternative embodiment of an electromagnetic release 1 is shown in FIGS. 6 to 9.
  • the difference from the first exemplary embodiment explained above essentially lies in the shape of the magnetic yoke 4, which is shown in more detail in FIGS. 10a to 10d.
  • the stamped part from which the magnetic yoke 4 including the magnetic core 5 and the arc guide rail 18 is bent has an L-shape whose shorter L-leg is formed by the magnetic core 5.
  • the bending process is particularly simple.
  • the trigger 1 is characterized by a simple structure with a few rationally producible items, both the armature 6 and the magnetic yoke 4, as explained in more detail above, are multifunctional. In connection with this multifunctionality, there is a saving in soldering, welding or other connection points.
  • the electromagnetic release 1 is thus very well suited for manual mounting.

Description

Die Erfindung betrifft einen elektromagnetischen Auslöser, insbesondere eines Leitungsschutzschalters, mit einer Spule, einem in dieser verschiebbaren Anker und einem Magnetjoch, welches einteilig mit einem zumindest teilweise in die Spule eingreifenden Magnetkern ausgebildet ist, sowie mit einer Feder zur Spannung des Ankers. Ein solcher elektromagnetischer Auslöser ist beispielsweise aus der DE 101 26 851 C1 bekannt.The invention relates to an electromagnetic release, in particular a circuit breaker, with a coil, a displaceable in this armature and a yoke, which is integrally formed with an at least partially engaging in the coil magnetic core, and a spring for tensioning the armature. Such an electromagnetic trigger is known for example from DE 101 26 851 C1.

Der aus der DE 101 26 851 C1 bekannte elektromagnetische Auslöser, insbesondere für einen Leitungsschutzschalter, weist einen einstückig mit einem Magnetjoch ausgebildeten Magnetkern auf, der innerhalb des Querschnitts der Auslösespule angeordnet ist und mit einer zentralen Öffnung zur Durchführung eines mit einem beweglichen Anker verbundenen Stößels versehen ist. Innerhalb eines Schutzschalters, wie eines Leitungsschutzschalters, ist häufig der elektromagnetische Auslöser aufgrund des relativ großen Durchmessers der Auslösespule dasjenige Bauteil, das die Mindestbreite des Schutzschalters vorgibt.The DE 101 26 851 C1 known electromagnetic release, in particular for a circuit breaker, has an integrally formed with a magnetic yoke magnetic core, which is disposed within the cross section of the trip coil and provided with a central opening for carrying a tappet connected to a movable armature is. Within a circuit breaker, such as a circuit breaker, the electromagnetic release is often due to the relatively large diameter of the trip coil that component, which dictates the minimum width of the circuit breaker.

Der Erfindung liegt die Aufgabe zugrunde, einen elektromagnetischen Auslöser, insbesondere für einen Leitungsschutzschalter, anzugeben, welcher bei einfacher Konstruktion besonders schmal aufgebaut ist.The invention has for its object to provide an electromagnetic release, in particular for a circuit breaker, which is constructed particularly narrow with a simple design.

Diese Aufgabe wird erfindungsgemäß gelöst durch einen elektromagnetischen Auslöser mit den Merkmalen des Anspruchs 1. Dieser Auslöser weist, prinzipiell vergleichbar mit einem herkömmlichen elektromagnetischen Auslöser mit Tauchanker, eine Spule, einen in dieser verschiebbaren Anker, ein Magnetjoch mit einem Kern, sowie eine den Anker mit einer Kraft entgegen der Betätigungsrichtung beaufschlagende Feder auf. Im Unterschied zu bekannten Magnetauslösern sind der Anker und der Kern des Magnetjochs jedoch nicht symmetrisch im Querschnitt der Spule angeordnet. Vielmehr weist der Magnetkern eine asymmetrisch im Spulenquerschnitt angeordnete, zumindest annähernd normal zur Spulenachse ausgerichtete Kernfläche auf, welcher der Magnetanker mit einer Ankerfläche gegenüberliegt. Diese Ankerfläche knickt zumindest annähernd rechtwinklig von einem Ankerhauptkörper ab, der in der Spule parallel zur Spulenachse verschiebbar ist. In der Spule befinden sich somit nebeneinanderliegend zum einen der Magnetkern und zum anderen der Ankerhauptkörper. Der Anker bzw. ein mit diesem zusammenwirkender Stößel durchdringt somit nicht den Magnetkern oder das Magnetjoch. Dies ermöglicht eine besonders schmale Bauweise der Spule, deren Innenbreite nur geringfügig die Breite des Ankers sowie die Breite des Magnetkerns übersteigen muss. Sowohl der Anker als auch der Magnetkern sind bevorzugt als einlagige Blechbauteile, vorzugsweise mit gleicher oder ähnlicher Dicke, gefertigt. Beide Blechbauteile Anker und Kern weisen innerhalb der Spule vorzugsweise einen rechteckigen Querschnitt auf, wobei sich die jeweiligen Schmalseiten gegenüberliegen. Insgesamt beträgt damit die Innenhöhe des annähernd rechteckigen Innenquerschnitts der Spule mehr als das Doppelte, bevorzugt mehr als das Dreifache der Innenbreite.This object is achieved by an electromagnetic release with the features of claim 1. This trigger has, in principle comparable to a conventional electromagnetic release with plunger armature, a coil, a movable in this anchor, a magnetic yoke with a core, as well as an anchor with a force against the actuating direction acted upon spring. Unlike known magnetic releases are the anchor and the core of the magnetic yoke is not arranged symmetrically in the cross section of the coil. Rather, the magnetic core has an asymmetrically arranged in the coil cross-section, at least approximately normal to the coil axis aligned core surface, which faces the armature with an anchor surface. This armature surface bends at least approximately at right angles from an armature main body, which is displaceable in the coil parallel to the coil axis. In the coil are thus adjacent to one side of the magnetic core and the other anchor main body. The armature or a cooperating with this plunger thus does not penetrate the magnetic core or the magnetic yoke. This allows a particularly narrow design of the coil whose inner width only slightly exceeds the width of the armature and the width of the magnetic core. Both the armature and the magnetic core are preferably manufactured as single-layer sheet metal components, preferably with the same or similar thickness. Both sheet metal components anchor and core preferably have within the coil on a rectangular cross-section, with the respective narrow sides are opposite. Overall, therefore, the inner height of the approximately rectangular inner cross section of the coil is more than twice, preferably more than three times the inner width.

Der Magnetanker ist bevorzugt als einstückiges Bauteil zusammen mit einem Stößel ausgebildet und durchdringt dabei axial die gesamte Spule. Somit ist die eine Seite des aus der Spule herausragenden Ankers als Stößel zur Betätigung insbesondere eines Bewegkontaktes und/oder einer Entklinkungsvorrichtung eines Leitungsschutzschalters nutzbar, während der auf der gegenüberliegenden Seite der Spule aus dieser herausragende Teil des Ankers bevorzugt der Befestigung der Feder dient. Diese Feder ist in besonders Raum sparender Weise bevorzugt als Kegeldruckfeder ausgebildet, welche zwischen der Spule oder einem anderen unbeweglichen Bauteil, insbesondere einer starren Gehäusestruktur und einem am Ankerhauptkörper angeformten Federlagerschenkel, etwas asymmetrisch zur Spulenachse, eingespannt ist. Alternativ kann die Feder beispielsweise auch als Schraubenfeder oder Feder sonstiger Geometrie ausgebildet sein.The armature is preferably formed as a one-piece component together with a plunger and penetrates axially the entire coil. Thus, one side of the protruding from the coil armature can be used as a plunger for actuating in particular a moving contact and / or a Entklinkungsvorrichtung a circuit breaker, while on the opposite side of the coil from this outstanding part of the anchor is preferably the attachment of the spring. This spring is preferably formed in a particularly space-saving manner as a conical compression spring, which between the coil or another immovable component, in particular a rigid housing structure and an integrally formed on the armature main body spring bearing legs, somewhat asymmetrical to the coil axis, is clamped. Alternatively, the spring may for example be designed as a helical spring or spring of other geometry.

Während der Magnetkern unveränderlich in der Spule angeordnet ist, ist der Ankerhauptkörper, welcher zugleich den Stößel bildet, in der Spule am Magnetkern vorbei verschiebbar. Um die freie Beweglichkeit des Magnetankers sicherzustellen, ist bevorzugt zwischen diesem und dem Magnetanker innerhalb der Spule eine Trennwand aus nicht magnetischem Material angeordnet. Diese Trennwand ist in konstruktiv vorteilhafter Weise vorzugsweise Bestandteil eines die Spule tragenden Spulenkörpers.While the magnetic core is arranged invariably in the coil, the armature main body, which also forms the plunger, is displaceable past the magnetic core in the coil. In order to ensure the free mobility of the magnet armature, a partition wall of non-magnetic material is preferably arranged between it and the magnet armature within the coil. This partition is in a structurally advantageous manner preferably part of a coil-carrying bobbin.

Ist das den elektromagnetischen Auslöser aufweisende Schaltgerät, insbesondere Leitungsschutzschalter, mit einer Lichtbogenlöschkammer ausgerüstet, so ist eine Lichtbogenleitschiene vorzugsweise in an sich bekannter Weise an das Magnetjoch angeformt. Ein besonders Raum sparender Aufbau ist gegeben, indem die Lichtbogenleitschiene im Querschnitt rechtwinklig zum Magnetkern angeordnet ist. Eine Anzahl Deionbleche einer Lichtbogenlöschkammer sind damit in dieser Ausführungsform ebenfalls im rechten Winkel zum Magnetkern sowie zum Magnetanker angeordnet. Da typischerweise die Breite der Deionbleche geringer ist als die Höhe des aus den Deionblechen gebildeten Stapels, ist somit der bevorzugt annähernd rechteckige Spulenquerschnitt längs zur durch die Normalen der Deionbleche gegebenen Haupterstreckungsrichtung der Lichtbogenlöschkammer ausgerichtet. In Querrichtung, d.h. in der Ebene der Deionbleche, baut der Auslöser dagegen besonders schmal. Dies ermöglicht es, innerhalb eines genormten Gehäuses eines Reiheneinbaugerätes, insbesondere mit einer Breite von 18 mm, zwei elektromagnetische Auslöser gleicher Bauart nebeneinander unterzubringen.If the switching device having the electromagnetic release, in particular circuit breaker, is equipped with an arc extinguishing chamber, then an arc guide rail is preferably formed on the magnet yoke in a manner known per se. A particularly space-saving design is given by the arc guide rail is arranged in cross section at right angles to the magnetic core. A number of Deionbleche an arc extinguishing chamber are thus arranged in this embodiment also at right angles to the magnetic core and the armature. Since typically the width of the Deionbleche is less than the height of the stack formed from the Deionblechen, thus the preferably approximately rectangular coil cross-section is aligned along the given by the standards of the Deionbleche main extension direction of the arc extinguishing chamber. In the transverse direction, i. in the level of Deionbleche, the trigger builds particularly narrow. This makes it possible to accommodate two electromagnetic triggers of the same type next to each other within a standardized housing of a DIN rail mounted device, in particular with a width of 18 mm.

Sowohl der mit dem Stößel kombinierte Anker als auch das mit dem Magnetkern kombinierte Magnetjoch sind bevorzugt als rationell zu fertigende Stanzteile bzw. Stanzbiegeteile hergestellt. Ist das Magnetjoch mit einer Lichtbogenleitschiene kombiniert, so ist dieses Teil zur Vermeidung unnötigen Abfalls beim Stanzen bevorzugt derart geformt, dass es im nicht gebogenen Zustand eine langgestreckte, im Wesentlichen gerade Form aufweist. Der Winkelversatz zwischen dem Magnetkern und der Lichtbogenleitschiene um 90° ist dennoch realisierbar, indem eine Knicklinie zwischen dem Magnetkern und der Lichtbogenleitschiene vorgesehen ist, welche im Endzustand des Bauteils sowohl mit dem Magnetkern als auch mit der Lichtbogenleitschiene einen Winkel von jeweils 45° einschließt.Both the armature combined with the plunger and the magnetic yoke combined with the magnetic core are preferably rational manufactured to be produced stamped parts or stamped and bent parts. If the magnetic yoke is combined with an arc guide rail, this part is preferably shaped in such a way that it has an elongate, essentially straight shape in the non-bent state in order to avoid unnecessary waste during punching. The angular offset between the magnetic core and the arc guide rail by 90 ° is still feasible by a crease line is provided between the magnetic core and the arc guide, which includes in the final state of the component with both the magnetic core and the arc guide at an angle of 45 °.

Der Vorteil der Erfindung besteht insbesondere darin, dass durch die asymmetrische Anordnung eines Magnetkerns und eines Magnetankers in einer Spule eines Magnetauslösers mit einem im Wesentlichen rechteckigen Innenquerschnitt dessen Breite nahezu auf die Dicke der als einlagige Blechbauteile gefertigten Teile Magnetkern - kombiniert mit einem Magnetjoch - und Anker - kombiniert mit einem Stößel - begrenzt ist.The advantage of the invention is, in particular, that by the asymmetrical arrangement of a magnetic core and a magnet armature in a coil of a magnetic release having a substantially rectangular inner cross section whose width almost to the thickness of the one-piece sheet metal parts manufactured parts magnetic core - combined with a magnetic yoke - and anchor - combined with a pestle - is limited.

Nachfolgend werden zwei Ausführungsbeispiele der Erfindung anhand einer Zeichnung näher erläutert. Hierin zeigen:

FIG 1
im Querschnitt ein erstes Ausführungsbeispiel eines elektromagnetischen Auslösers,
FIG 2
eine Vorderansicht des Auslösers nach FIG 1,
FIG 3
eine Draufsicht auf den Auslöser nach FIG 1,
FIG 4
eine perspektivische Ansicht des Auslösers nach FIG 1,
FIG 5a bis d
in verschiedenen Ansichten ein Magnetjoch des Auslösers nach den FIG 1 bis 4,
FIG 6
im Querschnitt ein zweites Ausführungsbeispiel eines elektromagnetischen Auslösers,
FIG 7
eine Vorderansicht des Auslösers nach FIG 6,
FIG 8
eine Draufsicht auf den Auslöser nach FIG 6,
FIG 9
eine perspektivische Ansicht des Auslösers nach FIG 6, und
FIG 10a bis d
in verschiedenen Ansichten ein Magnetjoch des Auslösers nach den FIG 6 bis 9.
Two embodiments of the invention will be explained in more detail with reference to a drawing. Herein show:
FIG. 1
in cross section a first embodiment of an electromagnetic release,
FIG. 2
a front view of the trigger according to FIG 1,
FIG. 3
a top view of the trigger of FIG 1,
FIG. 4
3 is a perspective view of the trigger according to FIG. 1,
FIGS. 5a to d
in various views, a magnetic yoke of the trigger according to the Figures 1 to 4,
FIG. 6
in cross section a second embodiment of an electromagnetic release,
FIG. 7
a front view of the trigger of FIG 6,
FIG. 8
a top view of the trigger of FIG 6,
FIG. 9
a perspective view of the trigger of FIG 6, and
FIGS. 10a to d
in different views, a magnetic yoke of the trigger according to the Figures 6 to 9.

Einander entsprechende oder gleich wirkende Teile sind in allen Figuren mit den gleichen Bezugszeichen versehen.Corresponding or equivalent parts are provided in all figures with the same reference numerals.

Die FIG 1 bis 4 zeigen in verschiedenen Ansichten einen elektromagnetischen Auslöser 1 eines nicht weiter dargestellten Schaltgerätes, beispielsweise eines Leitungsschutzschalters, Motorschutzschalter, Leistungsschalters, Schützes oder Relais, vorzugsweise in Form eines Reiheneinbaugerätes. Wesentliche Bestandteile des Auslösers 1 sind eine auf einem hülsenförmigen Spulenkörper 2 montierte Spule 3, ein Magnetjoch 4, welches einteilig mit einem Magnetkern 5 ausgebildet ist, sowie ein in der Spule 3 verschiebbarer Anker 6. Dieser fungiert zugleich als Stößel zur Betätigung eines nicht dargestellten, mit einem Kontaktstück 7 am Magnetjoch 4 zusammenwirkenden Bewegkontaktes. Eine zum Magnetjoch 4 hin aus der Spule 3 herausragende Stirnseite des Ankers 6 wird als Stößelfläche 8 bezeichnet. Diese Stößelfläche 8 begrenzt einen langgestreckten Ankerhauptkörper 9, welcher die gesamte Spule 3 durchdringt und auf der anderen Seite durch einen Federlagerschenkel 10, welcher rechtwinklig an den Ankerhauptkörper 9 angeformt ist, begrenzt ist. Der Federlagerschenkel 10 weist eine Nase 11 auf, die der Befestigung einer als Kegeldruckfeder ausgebildeten Feder 12 dient, welche andererseits an einer nicht näher dargestellten starren Struktur oder direkt am Spulenkörper 2 gelagert ist und den Anker 6 entgegen der Betätigungsrichtung R vorspannt.1 to 4 show in different views an electromagnetic release 1 of a switching device not shown in detail, for example a circuit breaker, motor protection switch, circuit breaker, contactor or relay, preferably in the form of a DIN rail mounted device. Essential components of the trigger 1 are a mounted on a sleeve-shaped bobbin 2 coil 3, a magnetic yoke 4, which is integrally formed with a magnetic core 5, and a displaceable in the coil 3 anchor 6. This also acts as a plunger for actuating a not shown, with a contact piece 7 on the magnetic yoke 4 cooperating moving contact. An end face of the armature 6 projecting out of the coil 3 towards the magnet yoke 4 is referred to as a tappet surface 8. This plunger surface 8 defines an elongate anchor main body 9, which penetrates the entire coil 3 and on the other side by a spring bearing leg 10 which is formed perpendicular to the anchor main body 9 is limited. The spring bearing leg 10 has a nose 11, which serves to attach a spring formed as a conical compression spring 12, on the other hand, is mounted on a rigid structure, not shown, or directly on the bobbin 2 and the armature 6 biases against the actuation direction R.

Bei Betätigung, d.h. elektromagnetischer Auslösung des Ankers 6 wird ein Luftspalt 13 zwischen einer den Magnetkern 5 in der Spule 3 begrenzenden, rechtwinklig zur Spulenachse A ausgerichteten Kernfläche 14 und einer dieser gegenüberliegenden Ankerfläche 15 geschlossen. Die Ankerfläche 15 ist Oberfläche eines Ankerarms 16, welcher als Teil des Ankers 6 rechtwinklig vom Ankerhauptkörper 9 abknickt. Der Anker 6 hat damit insgesamt eine F-Form mit dem Federlagerschenkel 10 und dem Ankerarm 16 als parallel zueinander angeordnete F-Schenkel. Der Anker 6 ist als Blech-Stanzteil mit einer Dicke d gefertigt, welche zumindest annähernd der Dicke des Magnetkerns 5 entspricht und etwas geringer ist als die Innenbreite b der Spule 3. Die Innenhöhe h der Spule 3 ist dagegen im Wesentlichen gegeben durch die Summe aus der Kernbreite k des Magnetkerns 5 und die Stößelbreite s des Ankers 6. Die Kernbreite k entspricht dabei annähernd der Breite der Ankerfläche 15 und hat direkten Einfluss auf die Magnetkraft zwischen der Kernfläche 14 und der Ankerfläche 15. Die Stößelbreite s des Ankerhauptkörpers 9 ist dagegen in erster Linie von Bedeutung für die mechanische Stabilität des Ankers 6. Die Kernbreite k, die direkten Einfluss auf die Schlagkraft des Magnetankers 6 hat, übersteigt die Stößelbreite s um mehr als 50%. Zwischen dem Ankerhauptkörper 9 und dem Magnetkern 5 befindet sich eine einstückig mit dem Spulenkörper 2 ausgebildete Trennwand 17, vorzugsweise aus Kunststoff, die die freie Beweglichkeit des Ankerhauptkörpers 9 relativ zum Magnetkern 5 sicherstellt. Die Innenhöhe h der Spule 3 beträgt im Ausführungsbeispiel mehr als das Dreifache der Innenbreite b. Aufgrund der geringen Innenbreite b ist die Gesamtbreite B des Auslösers 1, die nur geringfügig die Breite der Spule 3 übersteigt, derart bemessen, dass zwei gleichartige Auslöser 1 nebeneinander in einem 18 mm breiten Gehäuse Platz finden.Upon actuation, ie electromagnetic triggering of the armature 6, an air gap 13 between a magnetic core 5 in the coil 3 bounding, at right angles to the coil axis A aligned core surface 14 and an opposite armature surface 15 is closed. The armature surface 15 is the surface of an armature arm 16 which, as part of the armature 6, bends at right angles from the armature main body 9. The anchor 6 has thus a total of an F-shape with the spring bearing leg 10 and the anchor arm 16 as mutually parallel F-leg. The armature 6 is made as a sheet metal stamped part with a thickness d which corresponds at least approximately to the thickness of the magnetic core 5 and is slightly smaller than the inner width b of the coil 3. The inner height h of the coil 3, however, is substantially given by the sum The core width k corresponds approximately to the width of the armature surface 15 and has direct influence on the magnetic force between the core surface 14 and the armature surface 15. The tappet width s of the armature main body 9, however, is in The core width k, which has a direct influence on the impact force of the magnet armature 6, exceeds the tappet width s by more than 50%. Between the armature main body 9 and the magnetic core 5 there is a dividing wall 17 formed integrally with the coil body 2, preferably made of plastic, which ensures the free mobility of the armature main body 9 relative to the magnetic core 5. The inner height h of the coil 3 is in the exemplary embodiment more than three times the inner width b. Due to the small inner width b, the total width B of the trigger 1, which only slightly exceeds the width of the coil 3, dimensioned such that two similar triggers 1 side by side in a 18 mm wide housing space.

An das Magnetjoch 4 ist einstückig eine Lichtbogenleitschiene oder Lichtbogenlaufschiene 18 angeformt, die eine Lichtbogenlöschkammer begrenzt. Die Geometrie des Magnetjochs 4 mit der Lichtbogenleitschiene 18 wird insbesondere aus den FIG 5a bis 5d deutlich. Sowohl die Lichtbogenleitschiene 18 als auch der ebenfalls am Magnetjoch 4 einstückig angeformte Magnetkern 5 sind parallel zur Spulenachse A ausgerichtet, jedoch um 90° gegeneinander verdreht. Trotz dieser Verdrehung ist das Magnetjoch 4 einschließlich des Magnetkerns 5 und der Lichtbogenleitschiene 18 als Stanzbiegeteil aus einem gestanzten Blechstreifen gefertigt, welcher ursprünglich eine langgestreckte gerade Form aufweist. Die Verdrehung des Magnetkerns relativ zur Lichtbogenleitschiene um 90° ist möglich durch eine Knicklinie 19, welche mit jedem der genannten Teile 5,18 je eine 45°-Winkel einschließt. Auf diese Weise ist das Magnetjoch 4 mit minimalem Abfall beim Stanzvorgang herstellbar.An arc guide rail or arc guide rail 18 integrally formed on the magnetic yoke 4, which bounds an arc extinguishing chamber. The geometry of the magnetic yoke 4 with the arc guide rail 18 is particularly clear from FIGS. 5a to 5d. Both the arc guide rail 18 and also integrally formed on the magnetic yoke 4 magnetic core 5 are aligned parallel to the coil axis A, but rotated by 90 ° from each other. Despite this twist, the magnetic yoke 4 including the magnetic core 5 and the arc guide rail 18 is made as a stamped and bent part from a stamped sheet metal strip, which originally an elongated straight shape. The rotation of the magnetic core relative to the arc guide rail by 90 ° is possible by a crease line 19, which includes a respective 45 ° angle with each of said parts 5,18. In this way, the magnetic yoke 4 can be produced with minimal waste during the punching process.

Eine alternative Ausführungsform eines elektromagnetischen Auslösers 1 zeigen die FIG 6 bis 9. Der Unterschied zum oben erläuterten ersten Ausführungsbeispiel besteht im Wesentlichen in der Form des Magnetjochs 4, welches in den FIG 10a bis 10d näher dargestellt ist. In diesem Fall weist das Stanzteil, aus welchem das Magnetjoch 4 einschließlich des Magnetkerns 5 und der Lichtbogenleitschiene 18 gebogen ist, eine L-Form auf, deren kürzerer L-Schenkel durch den Magnetkern 5 gebildet ist. Durch geeignete Aneinanderfügung der einzelnen L-förmigen Stanzteile ist auch hier eine abfallarme Fertigung möglich. Zudem gestaltet sich der Biegevorgang besonders einfach.An alternative embodiment of an electromagnetic release 1 is shown in FIGS. 6 to 9. The difference from the first exemplary embodiment explained above essentially lies in the shape of the magnetic yoke 4, which is shown in more detail in FIGS. 10a to 10d. In this case, the stamped part from which the magnetic yoke 4 including the magnetic core 5 and the arc guide rail 18 is bent has an L-shape whose shorter L-leg is formed by the magnetic core 5. By suitable joining together of the individual L-shaped stampings a low-waste production is also possible here. In addition, the bending process is particularly simple.

In beiden Ausführungsformen zeichnet sich der Auslöser 1 durch einen einfachen Aufbau mit wenigen rationell herstellbaren Einzelteilen aus, wobei sowohl der Anker 6 als auch das Magnetjoch 4, wie oben näher erläutert, multifunktional sind. Im Zusammenhang mit dieser Multifunktionalität steht eine Einsparung an Löt-, Schweiß- oder anderen Verbindungsstellen. Der elektromagnetische Auslöser 1 ist damit sehr gut auch für eine manuelle Montage geeignet.In both embodiments, the trigger 1 is characterized by a simple structure with a few rationally producible items, both the armature 6 and the magnetic yoke 4, as explained in more detail above, are multifunctional. In connection with this multifunctionality, there is a saving in soldering, welding or other connection points. The electromagnetic release 1 is thus very well suited for manual mounting.

Claims (13)

  1. Electromagnetic trigger having a coil (3), an armature (6) displaceable therein and a magnet yoke (4) embodied as forming a single part with a magnet core (5) that protrudes least partially into said coil (3), and further having a spring (12) for tensioning said armature (6),
    characterised in that said magnet core (5) and said armature (6) are arranged asymmetrically within the cross-section of said coil (3), wherein an armature surface (15) bent at least approximately at right angles to a main armature body (9) extending parallel to a coil axis (A) is situated opposite a core surface (14) of the magnet core (5) within the coil (3), which surface is arranged at least approximately perpendicular to the coil axis (A).
  2. Trigger according to claim 1
    characterised in that the main armature body (9) extends axially throughout the coil (3).
  3. Trigger according to claim 1 or 2
    characterised in that the coil (3) has a long stretched-out cross-section having an internal breadth (b) and an internal height (h) that is more than twice the internal width (b).
  4. Trigger according to one of claims 1 to 3
    characterised in that the magnet core (5) is embodied as a single-layer sheet-metal component.
  5. Trigger according to one of claims 2 to 4
    characterised in that the magnet core (5) has an at least approximately rectangular cross-section having a width (d) corresponding approximately to the internal breadth (b) of the coil.
  6. Trigger according to one of claims 1 to 5
    characterised by a partition (17) made of a non-magnetic material and arranged in the coil (3) between the main armature body (9) and the magnet core (5).
  7. Trigger according to one of claims 1 to 6
    characterised in that the spring (12) is arranged asymmetrically relative to the coil cross-section substantially parallel to the coil axis (A).
  8. Trigger according to claim 7
    characterised by a spring-bearing shank (10) formed on the main armature body (9) at least approximately perpendicularly thereto.
  9. Trigger according to claim 7 or 8
    characterised in that the spring (12) is embodied as a spiral spring.
  10. Trigger according to claim 7 or 8
    characterised in that the spring (12) is embodied as a conical pressure spring.
  11. Trigger according to one of claims 1 to 10
    characterised by an arc runner (18) formed on the magnet yoke (4) as a single piece therewith.
  12. Trigger according to claim 11
    characterised in that the arc runner (18) has an at least approximately rectangular cross-section turned through 90° relative to the cross-section of the magnet core (5).
  13. Trigger according to claim 12
    characterised in that the magnet yoke (4) is formed together with the arc runner (18) from a long stretched-out, substantially straight sheet-metal strip.
EP20030009932 2003-04-30 2003-04-30 Electromagnetic trip device Expired - Fee Related EP1473751B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES03009932T ES2258182T3 (en) 2003-04-30 2003-04-30 ELECTROMAGNETIC SHOOTING MECHANISM.
EP20030009932 EP1473751B1 (en) 2003-04-30 2003-04-30 Electromagnetic trip device
DE50302699T DE50302699D1 (en) 2003-04-30 2003-04-30 Electromagnetic release

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030009932 EP1473751B1 (en) 2003-04-30 2003-04-30 Electromagnetic trip device

Publications (2)

Publication Number Publication Date
EP1473751A1 EP1473751A1 (en) 2004-11-03
EP1473751B1 true EP1473751B1 (en) 2006-03-22

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Application Number Title Priority Date Filing Date
EP20030009932 Expired - Fee Related EP1473751B1 (en) 2003-04-30 2003-04-30 Electromagnetic trip device

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EP (1) EP1473751B1 (en)
DE (1) DE50302699D1 (en)
ES (1) ES2258182T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010035072A1 (en) * 2010-08-21 2012-02-23 Abb Ag Magnetic system and installation switching device with a magnet system
WO2018212687A1 (en) * 2017-05-15 2018-11-22 Alfanar Comapny An instantaneous tripping device for a miniature circuit breaker and miniature circuit breaker comprising the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE493806C (en) * 1929-01-18 1930-03-13 Oerlikon Maschf Electromagnetic overcurrent high-speed switch
DE937835C (en) * 1952-01-31 1956-01-19 Rudolf Bogenschuetz Ges Mit Be Automatic switch, especially in plug form
DE10126851C1 (en) * 2001-06-01 2002-12-19 Siemens Ag Switching device with electromagnetic release having components supported by bearings provided by parts of housing of switching device

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ES2258182T3 (en) 2006-08-16
EP1473751A1 (en) 2004-11-03
DE50302699D1 (en) 2006-05-11

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