EP1393338B1 - Magnet yoke of an electromagnetic tripping device - Google Patents
Magnet yoke of an electromagnetic tripping device Download PDFInfo
- Publication number
- EP1393338B1 EP1393338B1 EP02729898A EP02729898A EP1393338B1 EP 1393338 B1 EP1393338 B1 EP 1393338B1 EP 02729898 A EP02729898 A EP 02729898A EP 02729898 A EP02729898 A EP 02729898A EP 1393338 B1 EP1393338 B1 EP 1393338B1
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- European Patent Office
- Prior art keywords
- magnet
- magnetic core
- core
- magnet yoke
- yoke according
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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
- H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
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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
- H01H2071/249—Electromagnetic mechanisms with part of the magnetic circuit being in the normal current path in the circuit breaker, e.g. yoke, fixed contact and arc-runner are made out of one single conductive element
Definitions
- the invention relates to a magnetic yoke of an electromagnetic release for a switching device, wherein the magnetic yoke is provided with a base body made of a ferromagnetic material, and with a magnetic core which is end-mounted on a trip coil.
- a trip coil In an electromagnetic trigger for a switching device, inter alia, a trip coil, a trip arm, a magnetic core and a magnetic yoke are used.
- the trip anchor is separated by an air gap from the magnetic core. If a sufficient current flows through the tripping coil, the tripping armature is set in motion in the direction of the magnetic core for bridging the air gap. The movement results from the thereby developing magnetic field, the magnetic yoke in this case serves for the most extensive closing of the associated magnetic circuit.
- Such electromagnetic release is in connection with a circuit breaker from the EP 0 444 283 B1 known.
- the structure of this electromagnetic release and the associated magnetic yoke is expensive, in addition, there is a large amount of space for the magnetic yoke in installation position.
- a circuit breaker which comprises a magnetic yoke and a magnetic core, which are formed by correspondingly shaped portions of a one-piece conductor, which is formed at its one end to a holder for a bimetallic element and at the other end as an arc guide plate.
- a magnetic yoke of the type mentioned in which according to the invention the base body is formed with the magnetic core as a one-piece assembly.
- the conventional design of this unit is much easier and on the other hand, the unit can be produced more cheaply. Contributing to this include, among other things, the possible use of preplated ferromagnetic ribbons. In addition, eliminates costly turned parts and also material, positive or non-positive manufacturing steps can be saved. Furthermore, the cycle times of the production steps are shortened.
- the production of the one-piece structural unit can be realized for example by means of a stamping and bending technique with a very good material utilization and a very low waste. A single simple tool or tool is sufficient, which in turn can be saved investment funds. Furthermore, with the present idea, the logistical effort in the production run is kept low, since the structures of the units of the electromagnetic release are kept flat and they manage with a small number of individual parts.
- the magnetic core is designed for engagement in the trip coil. This creates the air gap, starting from the total length, approximately in the middle of the trip coil, whereby the electromagnetic effect is effectively utilized.
- the magnetic core has an effective core area adjoining the triggering coil at the end.
- the advantage here is that no separate or integrated magnetic core must be attached or formed. Both the required material as well as any attachment can therefore be saved. Cost-effective, the magnetic core is formed with an end portion of the body as a U-shaped or closed profile.
- the magnetic core is plate-shaped with the end piece of the base body. This variant is characterized by a low material consumption and therefore by a cost-effective production.
- a pair of wings adjacent to the magnetic core, whereby the triggering the underlying electromagnetic principle can be advantageously influenced.
- the magnetic core is formed with the end piece of the base body at least approximately as a cylinder. This embodiment allows a very good material utilization with a very low waste.
- the cylinder is designed as a deep-drawn part. In this case, a cost-saving reduction of the production cycles can be achieved.
- the magnetic core has at least one opening for guiding a triggering armature. Further means for guiding the trip anchor can therefore be omitted, which also results in a saving of material and manufacturing steps.
- main body forms with its free end a leg having a recess disposed therein, which also serves to guide the trigger armature.
- an extension for electrical connection to the trip coil is provided, whereby a connection means is given with little effort and a low material usage.
- FIG. 1 a first magnetic yoke 1a is shown with a main body 2a and with a magnetic core 3a.
- FIG. 2 shows the first magnetic yoke 1a without additional components and without housing in a three-dimensional view.
- the main body 2a is formed with the magnetic core 3a as an integral unit.
- the main body 2a extends from the first magnetic yoke 1a to an ear-shaped portion 4a. Subsequent to the ear-shaped area 4a, an L-shaped bend is arranged, the magnetic core 3a being formed with an end piece 10a of the main body 2a.
- the base body 2a is in this case of a ferromagnetic material, for example. Also a ferromagnetic powder or granules can serve as a base.
- the magnetic core 3 a can be arranged on a trigger coil 5 a end. In this case, the magnetic core 3a has an effective core surface 6 adjoining the trigger coil 5a at the end.
- the trip coil 5a includes a trip arm 7a having a plunger 8a.
- the plunger 8a is guided in an opening 9 of the magnetic core 3a.
- the trigger anchor 7a extends along the longitudinal axis LA.
- the plunger 8a points in the direction of the opening. 9
- the position of the magnetic core 3a with its effective core surface 6 is preferably such that the associated tail 10a is aligned orthogonal to the longitudinal axis LA.
- the position of the first magnetic yoke 1a is parallel to the longitudinal axis LA and thus also parallel to the tripping coil 5a and the tripping armature 7a.
- a first free end 11a has in the opposite direction compared to the plunger 8a.
- FIG. 3 a second magnetic yoke 1b is shown with a base body 2b.
- FIG. 4 shows the second magnetic yoke 1b without further components and without housing in a three-dimensional view.
- the main body 2b comprises in contrast to the main body 2a according to FIG. 1 an altered magnetic core 3b and a matched ear-shaped portion 4b.
- the magnetic core 3b has rounded edges at its end portion 10b, and the ear-shaped portion 4b is made approximately U-shaped.
- a two-sided, continuous taper is given.
- the second magnetic yoke 1b differs from the first magnetic yoke 1a according to FIG. 1 in that a second free end 11b is developed to form a leg 12 and is oriented in the same direction as the end piece 10a according to FIG. 1 extends.
- a recess 13 is introduced, in which an extended release armature 7b is guided and stored.
- ram 8b In the opening 9 of the corresponding, somewhat shortened, ram 8b is guided and stored.
- the trip arm 7b and the plunger 8b are included in a matched trip coil 5b.
- the second magnetic yoke 1b encompasses, grips or grips the triggering coil 5b at the end.
- FIG. 5 a third magnetic yoke 1c is shown with a main body 2c.
- FIG. 6 shows the third magnetic yoke 1c without further Components and without housing in a spatial view.
- the main body 2c comprises in contrast to the main body 2a according to FIG. 1 a modified magnetic core 3c having an end piece 10c and a fitted ear-shaped portion 4c.
- the end piece 10c is in this case angled in particular three times clockwise in such a way to the magnetic core 3c, that a closed, approximately square profile is given.
- a double bend of the end piece 10c to a U-shaped profile is another option.
- the opening 9 is here twice introduced in the magnetic core 3c for an extended plunger 8c.
- a shortened release armature 7c having the plunger 8c is in this case enclosed by an adapted triggering coil 5c.
- the magnetic core 3c with its effective core surface 6 is designed to engage in an associated trip coil 5c.
- the magnetic yokes 1a to 1c, the ear-shaped portions 4a to 4c, the magnetic cores 3a to 3c, the tripping coils 5a to 5c and the tripping armatures 7a to 7c are components of an electromagnetic actuator 14a, 14b and 14c for a switching device 15a, 15b and 15c which each have a housing 16.
- the electromagnetic releases 14a, 14b and 14c have, in addition to the aforementioned components, a fixed contact carrier, a fixed contact, a switching mechanism with a moving contact, an arc extinguishing chamber and a thermal tripping member.
- FIGS. 7 to 16 show for simplification a fourth to an eighth magnetic yoke 1d to 1h without further components and without housing in different views.
- FIG. 7 is the fourth magnetic yoke 1d shown with a main body 2d in a side view.
- FIG. 8 shows the fourth magnetic yoke 1d in a spatial view.
- the main body 2d comprises in contrast to the main body 2c according to FIG. 5 a modified magnetic core 3d having an end piece 10d and a fitted ear-shaped portion 4d.
- the end piece 10d is in this case likewise in particular angled three times clockwise in such a way to the magnetic core 3d that a closed profile is given.
- the magnetic core 3d has in comparison to the magnetic core 3c according to FIG. 5 a rectangular profile.
- the magnetic core 3d has a lower pair of wings 17a. This is formed based on the main body 2d and extends on both sides of the magnetic core 3d such that a nearly closed on all sides profile is formed.
- the pair of wings 17a may be formed in an alternative embodiment such that the first wing formed opposite to the second wing and thereby given an asymmetric geometry.
- FIG. 9 is the fifth magnetic yoke 1e shown with a main body 2e in a side view.
- FIG. 10 shows the fifth magnetic yoke 1e in a spatial view.
- the main body 2e comprises in contrast to the main body 2d according to FIG. 7 a modified magnetic core 3e having an end piece 10e and a fitted ear-shaped portion 4e.
- the end piece 10e is in this case angled twice clockwise in such a way to the magnetic core 3e, that a U-shaped, given to one side open profile.
- an extension 19 is provided for electrical connection to a trip coil on the base body 2e and thus also on the magnetic core 3e.
- the extension 19 can be used in all embodiments mentioned here.
- FIG. 11 is the sixth magnetic yoke 1f shown with a main body 2f in a side view.
- FIG. 12 shows the sixth magnetic yoke 1f in a spatial view.
- the main body 2f comprises in contrast to the main body 2d according to FIG. 7 a modified magnetic core 3f having an end piece 10f and a fitted ear-shaped portion 4f.
- the end piece 10f is simply angled in a clockwise direction in such a way to the magnetic core 3f, that an L-shaped profile is given.
- the magnetic core 3f is dish-shaped here with the end piece 10f of the main body 2f.
- the magnetic core 3f has a lower pair of wings 17c, which is largely identical to the pair of wings 17a according to FIG FIG. 7 is designed.
- the magnetic cores 3c to 3f can, depending on the view of the associated FIGS. 5 to 12 , in a side or in a front view equally have the U-shaped profile.
- FIG. 13 is the seventh magnetic yoke 1g shown with a main body 2g in a side view.
- FIG. 14 shows the magnetic yoke 1g in a spatial view.
- the main body 2g comprises in contrast to the previous basic bodies 2a to 2f according to FIG 1 to 11 a modified magnetic core 3g having an end piece 10g and a fitted ear-shaped portion 4g.
- the end piece 10g has a pair of wings 17d.
- the magnetic core 3g is here formed with the end piece 10g and the pair of wings 17d of the main body 2g at least approximately as a first cylinder 20a.
- the first cylinder 20a has a longitudinal gap on the circumference.
- FIG. 15 is the eighth magnetic yoke 1h shown with a main body 2h in a side view.
- FIG. 16 shows the eighth magnetic yoke 1h in a spatial view.
- the main body 2h comprises in contrast to the main body 2g according to FIG. 13 a modified magnetic core 3h having an end piece 10h and a fitted ear-shaped portion 4h.
- the magnetic core 3h is here formed with the end piece 10h of the main body 2h as a second cylinder 20b, wherein this is formed as a deep-drawn part.
- the deep-drawn part is produced by a deep-drawing process in a circumferentially closed configuration.
- Conventionally manufactured assemblies in this regard typically include a single magnetic yoke, a single ear-shaped portion, or a single adapter and a single magnetic core.
- the ear-shaped area or the intermediate piece serve inter alia as a fixed contact carrier on which a fixed contact is arranged.
- these components are provided with an individually applied galvanic coating. The individual components are then replaced by suitable techniques, such as welding, rivets or similar. connected.
- the magnetic yoke and serving as a fixed contact carrier adapter are usually made in a stamping and bending technique.
- the magnetic core is designed as a rotating part contrast.
- a trip coil In the functional relationship of the new magnetic yoke with an electromagnetic trigger for a switching device, inter alia, a trip coil, a trip arm, a magnetic core and a magnetic yoke are used.
- the trip anchor is separated by an air gap from the magnetic core. If a sufficient current flows through the tripping coil, the tripping armature is set in motion in the direction of the magnetic core for bridging the air gap.
- the magnetic yoke in this case serves for the most extensive closing of the associated magnetic circuit.
- a switching device with an electromagnetic release is preferably used in the control, switching and command technology.
- Possible design variants, possibly also in the form of a DIN rail mounted device, are, for example, a contactor, a relay, a power, a line or a motor protection switch.
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Abstract
Description
Die Erfindung bezieht sich auf ein Magnetjoch eines elektromagnetischen Auslösers für ein Schaltgerät, wobei das Magnetjoch mit einem Grundkörper aus einem ferromagnetischen Material, und mit einem Magnetkern versehen ist, welcher an einer Auslösespule endseitig anordbar ist.The invention relates to a magnetic yoke of an electromagnetic release for a switching device, wherein the magnetic yoke is provided with a base body made of a ferromagnetic material, and with a magnetic core which is end-mounted on a trip coil.
Bei einem elektromagnetischen Auslöser für ein Schaltgerät kommen unter anderem eine Auslösespule, ein Auslöseanker, ein Magnetkern und ein Magnetjoch zum Einsatz. Der Auslöseanker ist dabei durch einen Luftspalt vom Magnetkern getrennt. Fließt durch die Auslösespule ein genügend großer Strom, so wird der Auslöseanker zur Überbrückung des Luftspalts in Richtung des Magnetkerns in Bewegung gesetzt. Die Bewegung resultiert aus dem sich dabei aufbauenden Magnetfeld, wobei das Magnetjoch hierbei zum weitestgehenden Schließen des zugehörigen magnetischen Kreises dient.In an electromagnetic trigger for a switching device, inter alia, a trip coil, a trip arm, a magnetic core and a magnetic yoke are used. The trip anchor is separated by an air gap from the magnetic core. If a sufficient current flows through the tripping coil, the tripping armature is set in motion in the direction of the magnetic core for bridging the air gap. The movement results from the thereby developing magnetic field, the magnetic yoke in this case serves for the most extensive closing of the associated magnetic circuit.
Ein derartiger elektromagnetischer Auslöser ist in Verbindung mit einem Leitungsschutzschalter aus der
Es ist daher Aufgabe der vorliegenden Erfindung, ein Magnetjoch für einen elektromagnetischen Auslöser anzugeben, bei dem der Aufbau einerseits und der Platzbedarf andererseits kostengünstig bzw. optimiert sein soll.It is therefore an object of the present invention to provide a magnetic yoke for an electromagnetic release in which the structure on the one hand and the space required on the other hand should be cost-effective or optimized.
Diese Aufgabe wird durch ein Magnetjoch der eingangs genannten Art gelöst, bei dem erfindungsgemäß der Grundkörper mit dem Magnetkern als einstückige Baueinheit ausgebildet ist.This object is achieved by a magnetic yoke of the type mentioned, in which according to the invention the base body is formed with the magnetic core as a one-piece assembly.
Durch die Ausbildung des Grundkörper mit dem Magnetkern als einstückige Baueinheit, ist zum einen die herkömmliche Konstruktion dieser Baueinheit wesentlich vereinfacht und zum anderen kann die Baueinheit kostengünstiger hergestellt werden. Hierzu tragen unter anderem die nun mögliche Verwendung von vorgalvanisierten ferromagnetischen Bändern bei. Darüber hinaus entfallen kostenintensive Drehteile und auch stoff-, form- oder kraftschlüssige Fertigungsschritte können eingespart werden. Des Weiteren verkürzen sich die Zykluszeiten der Fertigungsschritte.Due to the design of the main body with the magnetic core as a one-piece unit, on the one hand, the conventional design of this unit is much easier and on the other hand, the unit can be produced more cheaply. Contributing to this include, among other things, the possible use of preplated ferromagnetic ribbons. In addition, eliminates costly turned parts and also material, positive or non-positive manufacturing steps can be saved. Furthermore, the cycle times of the production steps are shortened.
Die Herstellung der einstückigen Baueinheit lässt sich beispielsweise mittels einer Stanz-, Biegetechnik bei einer sehr guten Materialausnutzung und einem sehr geringen Verschnitt realisieren. Ein einziges einfaches Fertigungsmittel oder auch Werkzeug ist dabei ausreichend, wodurch wiederum Investitionsmittel eingespart werden können. Ferner ist mit vorliegender Idee der logistische Aufwand im Fertigungsdurchlauf gering gehalten, da die Strukturen der Baueinheiten des elektromagnetischen Auslösers flach gehalten sind und diese mit einer geringer Anzahl an Einzelteilen auskommen.The production of the one-piece structural unit can be realized for example by means of a stamping and bending technique with a very good material utilization and a very low waste. A single simple tool or tool is sufficient, which in turn can be saved investment funds. Furthermore, with the present idea, the logistical effort in the production run is kept low, since the structures of the units of the electromagnetic release are kept flat and they manage with a small number of individual parts.
Mit Vorteil ist der Magnetkern zum Eingriff in die Auslösespule ausgebildet. Dabei entsteht der Luftspalt, ausgehend von der Gesamtlänge, in etwa in der Mitte der Auslösespule, wodurch der elektromagnetische Effekt effektiv ausgenutzt ist.Advantageously, the magnetic core is designed for engagement in the trip coil. This creates the air gap, starting from the total length, approximately in the middle of the trip coil, whereby the electromagnetic effect is effectively utilized.
In einer weiteren Ausgestaltung weist der Magnetkern eine an die Auslösespule endseitig angrenzende, wirksame Kernfläche auf. Vorteilhaft ist hierbei, dass kein separater oder integrierter Magnetkern angebracht bzw. ausgeformt werden muss. Sowohl das dafür benötigte Material wie auch eine etwaige Befestigung kann demnach eingespart werden. Kostengünstig ist der Magnetkern mit einem Endstück des Grundkörpers als U-förmiges oder als geschlossenes Profil ausgebildet.In a further embodiment, the magnetic core has an effective core area adjoining the triggering coil at the end. The advantage here is that no separate or integrated magnetic core must be attached or formed. Both the required material as well as any attachment can therefore be saved. Cost-effective, the magnetic core is formed with an end portion of the body as a U-shaped or closed profile.
In einer weiteren Ausgestaltung ist der Magnetkern mit dem Endstück des Grundkörpers tellerförmig ausgebildet. Auch diese Ausführungsvariante zeichnet sich durch einen geringer Materialverbrauch und deshalb durch eine kostengünstige Herstellung aus.In a further embodiment, the magnetic core is plate-shaped with the end piece of the base body. This variant is characterized by a low material consumption and therefore by a cost-effective production.
Vorzugsweise grenzt an den Magnetkern ein Flügelpaar an, wodurch das dem Auslöser zugrundeliegende elektromagnetische Prinzip vorteilhaft beeinflusst werden kann.Preferably, adjacent to the magnetic core, a pair of wings, whereby the triggering the underlying electromagnetic principle can be advantageously influenced.
In einfacher Weise ist der Magnetkern mit dem Endstück des Grundkörpers zumindest annähernd als Zylinder ausgeformt. Diese Ausführungsvariante erlaubt eine sehr gute Materialausnutzung bei einem sehr geringen Verschnitt.In a simple way, the magnetic core is formed with the end piece of the base body at least approximately as a cylinder. This embodiment allows a very good material utilization with a very low waste.
Mit Vorteil ist der Zylinder als Tiefziehteil ausgebildet. Hierbei kann eine kosteneinsparende Verkürzung der Fertigungszyklen erreicht werden.Advantageously, the cylinder is designed as a deep-drawn part. In this case, a cost-saving reduction of the production cycles can be achieved.
Vorzugsweise weist der Magnetkern zumindest eine Öffnung zur Führung eines Auslöseankers auf. Weitere Mittel zur Führung des Auslöseankers können demnach entfallen, wodurch sich ebenfalls eine Einsparung von Material und Fertigungsschritten ergibt.Preferably, the magnetic core has at least one opening for guiding a triggering armature. Further means for guiding the trip anchor can therefore be omitted, which also results in a saving of material and manufacturing steps.
In einer weiteren einfachen Ausgestaltung bildet der Grundkörper mit seinem freien Ende einen Schenkel, der eine darin angeordnete Aussparung aufweist, die gleichermaßen zur Führung des Auslöseankers dient. Hiermit ist eine zweckdienliche und teilereduzierte Lagerung gegeben.In a further simple embodiment of the main body forms with its free end a leg having a recess disposed therein, which also serves to guide the trigger armature. Hereby a useful and partially reduced storage is given.
Bevorzugt ist ein Fortsatz zum elektrischen Anschluss an die Auslösespule vorgesehen, wodurch mit wenig Aufwand und einem geringen Materialeinsatz ein Anschlussmittel gegeben ist.Preferably, an extension for electrical connection to the trip coil is provided, whereby a connection means is given with little effort and a low material usage.
Weitere Vorteile und Details der Erfindung werden nachfolgend beispielhaft anhand der Zeichnung näher erläutert. Es zeigen grob schematisch:
- FIG 1 und 2
- ein erstes Magnetjoch mit bzw. ohne weiteren Bauteilen und mit bzw. ohne einem Gehäuse in verschiedenen Ansichten,
- FIG 3 und 4
- ein zweites Magnetjoch mit bzw. ohne weiteren Bauteilen und mit bzw. ohne einem Gehäuse in verschiedenen Ansichten,
- FIG 5 und 6
- ein drittes Magnetjoch mit bzw. ohne weiteren Bauteilen und mit bzw. ohne einem Gehäuse in verschiedenen Ansichten,
- FIG 7 und 8
- ein viertes Magnetjoch in verschiedenen Ansichten,
- FIG 9 und 10
- ein fünftes Magnetjoch in verschiedenen Ansichten,
- FIG 11 und 12
- ein sechstes Magnetjoch in verschiedenen Ansichten,
- FIG 13 und 14
- ein siebtes Magnetjoch in verschiedenen Ansichten, und
- FIG 15 und 16
- ein achtes Magnetjoch in verschiedenen Ansichten.
- 1 and 2
- a first magnetic yoke with or without further components and with or without a housing in different views,
- 3 and 4
- a second magnetic yoke with or without further components and with or without a housing in different views,
- FIGS. 5 and 6
- a third magnetic yoke with or without further components and with or without a housing in different views,
- FIGS. 7 and 8
- a fourth magnetic yoke in different views,
- FIGS. 9 and 10
- a fifth magnetic yoke in different views,
- FIGS. 11 and 12
- a sixth magnetic yoke in different views,
- FIGS. 13 and 14
- a seventh magnetic yoke in different views, and
- FIGS. 15 and 16
- an eighth magnetic yoke in different views.
Im nachfolgenden Text sind gleiche Teile der Figuren mit gleichen Bezugszeichen oder sinngemäß mit ähnlichen Bezugszeichen versehen. Zur Vereinfachung sind in einigen Figuren die weiteren Bauteile und das Gehäuse nicht dargestellt.In the following text, the same parts of the figures are given the same reference numerals or analogously with similar reference numerals. For simplicity, the other components and the housing are not shown in some figures.
Zunächst werden konstruktive Details, später funktionelle Zusammenhänge erläutert. Auf die Funktion des Schaltgeräts wird nicht näher eingegangen, da diese aus dem Stand der Technik hinlänglich bekannt ist. Dies betrifft insbesondere die elektrische Aktivierung eines Auslösers und die mechanische Kopplung mit einem Schaltschloss.First, constructive details, later functional relationships are explained. On the function of the switching device will not be discussed, since this is well known in the prior art. This applies in particular to the electrical activation of a trigger and the mechanical coupling with a switching mechanism.
In
Der Grundkörper 2a ist hierbei aus einem ferromagnetischen Material, wozu z.B. auch ein ferromagnetisches Pulver oder Granulat als Basis dienen kann. Der Magnetkern 3a ist an einer Auslösespule 5a endseitig anordbar. Hierbei weist der Magnetkern 3a eine an die Auslösespule 5a endseitig angrenzende wirksame Kernfläche 6 auf.The
Die Auslösespule 5a umfasst einen Auslöseanker 7a, der einen Stößel 8a aufweist. Der Stößel 8a ist dabei in einer Öffnung 9 des Magnetkerns 3a geführt. Der Auslöseanker 7a erstreckt sich entlang der Längsachse LA. Der Stößel 8a weist dabei in Richtung der Öffnung 9.The
Die Lage des Magnetkerns 3a mit seiner wirksamen Kernfläche 6 ist dabei vorzugsweise derart, dass das zugehörige Endstück 10a orthogonal zur Längsachse LA ausgerichtet ist. Die Lage des ersten Magnetjochs 1a ist parallel zur Längsachse LA und damit auch parallel zur Auslösespule 5a und zum Auslöseanker 7a. Ein erstes freies Ende 11a weist dabei im Vergleich zum Stößel 8a in die entgegengesetzte Richtung.The position of the
In
Das zweite Magnetjoch 1b unterscheidet sich vom ersten Magnetjoch 1a gemäß
In der Öffnung 9 ist der entsprechende, etwas verkürzte, Stößel 8b geführt und gelagert. Der Auslöseanker 7b und der Stößel 8b sind von einer angepassten Auslösespule 5b umfasst. Das zweite Magnetjoch 1b umfasst, -greift oder fasst dabei die Auslösespule 5b endseitig ein.In the
In
Die Öffnung 9 ist hierbei zweifach im Magnetkern 3c für einen verlängerten Stößel 8c eingebracht. Ein den Stößel 8c aufweisender, verkürzter Auslöseanker 7c ist dabei von einer angepassten Auslösespule 5c umfasst. Der Magnetkern 3c mit seiner wirksamen Kernfläche 6 ist dabei zum Eingriff in eine zugehörige Auslösespule 5c ausgebildet.The
Der folgende Abschnitt bezieht sich gleichermaßen auf die Figuren 1,3 und 5. Die Magnetjoche 1a bis 1c, die ohrenförmigen Bereiche 4a bis 4c, die Magnetkerne 3a bis 3c, die Auslösespulen 5a bis 5c und die Auslöseanker 7a bis 7c sind Bauteile eines elektromagnetischen Auslösers 14a, 14b bzw. 14c für ein Schaltgerät 15a,15b bzw. 15c welche jeweils ein Gehäuse 16 aufweisen. Die elektromagnetischen Auslöser 14a, 14b und 14c weisen unter anderem neben den vorab genannten Bauteilen noch einen Festkontaktträger, einen Festkontakt, ein Schaltschloss mit einem Bewegkontakt, eine Lichtbogenlöschkammer und ein thermisches Auslöseglied auf.The following section applies equally to Figs. 1, 3 and 5. The
Der nachfolgende Abschnitt bezieht sich gleichermaßen auf die
In
Der Magnetkern 3d weist im Vergleich zum Magnetkern 3c gemäß
In
In Ergänzung zur Ausführungsvariante gemäß
In
Die Magnetkerne 3c bis 3f können, je nach Betrachtungsweise der zugehörigen
In
In
Der Magnetkern 3h ist hier mit dem Endstück 10h des Grundkörpers 2h als ein zweiter Zylinder 20b ausgeformt, wobei dieser als Tiefziehteil ausgebildet ist. Das Tiefziehteil ist durch einen Tiefziehvorgang in einer am Umfang geschlossenen Ausgestaltung hergestellt.The
Diesbezüglich konventionell hergestellte Baueinheiten, weisen in aller Regel ein einzelnes Magnetjoch, einen einzelnen ohrenförmigen Bereich oder ein einzelnes Zwischenstück und einen einzelnen Magnetkern auf. Der ohrenförmige Bereich oder das Zwischenstück dienen unter anderem als Festkontaktträger auf dem ein Festkontakt angeordnet ist. Zuzüglich sind diese Bauteile mit einem individuell aufgebrachten galvanischen Überzug versehen. Die einzelnen Bauteile werden dann durch geeignete Techniken, wie beispielsweise Schweißen, Nieten o.ä. verbunden. Das Magnetjoch und das als Festkontaktträger dienende Zwischenstück sind üblicherweise in einer Stanz-Biegetechnik hergestellt. Der Magnetkern ist demgegenüber als Drehteil ausgelegt.Conventionally manufactured assemblies in this regard typically include a single magnetic yoke, a single ear-shaped portion, or a single adapter and a single magnetic core. The ear-shaped area or the intermediate piece serve inter alia as a fixed contact carrier on which a fixed contact is arranged. In addition, these components are provided with an individually applied galvanic coating. The individual components are then replaced by suitable techniques, such as welding, rivets or similar. connected. The magnetic yoke and serving as a fixed contact carrier adapter are usually made in a stamping and bending technique. The magnetic core is designed as a rotating part contrast.
Mit dem neuen Magnetjoch können demzufolge beträchtliche Herstellungskosten für das Drehteil, für die Montage und für die Verbindungstechnik und die Oberflächenbehandlung eingespart werden.With the new magnetic yoke can therefore be saved considerable manufacturing costs for the rotating part, for the assembly and for the connection technology and the surface treatment.
Die einzelnen Ausgestaltungen der Figuren können untereinander variiert werden. Ggf. können die Ausführungsvarianten der jeweiligen Magnetkerne 3d bis 3f ohne die Flügelpaare 17a,17b,17c und 18 gemäß
Beim funktionellen Zusammenhang des neuen Magnetjochs mit einem elektromagnetischen Auslöser für ein Schaltgerät kommen unter anderem eine Auslösespule, ein Auslöseanker, ein Magnetkern und ein Magnetjoch zum Einsatz. Der Auslöseanker ist dabei durch einen Luftspalt vom Magnetkern getrennt. Fließt durch die Auslösespule ein genügend großer Strom, so wird der Auslöseanker zur Überbrückung des Luftspalts in Richtung des Magnetkerns in Bewegung gesetzt.In the functional relationship of the new magnetic yoke with an electromagnetic trigger for a switching device, inter alia, a trip coil, a trip arm, a magnetic core and a magnetic yoke are used. The trip anchor is separated by an air gap from the magnetic core. If a sufficient current flows through the tripping coil, the tripping armature is set in motion in the direction of the magnetic core for bridging the air gap.
Die Bewegung resultiert aus dem sich dabei aufbauenden Magnetfeld, wobei das Magnetjoch hierbei zum weitestgehenden Schließen des zugehörigen magnetischen Kreises dient.The movement results from the thereby developing magnetic field, the magnetic yoke in this case serves for the most extensive closing of the associated magnetic circuit.
Zur Anwendung kommt ein Schaltgerät mit einem elektromagnetischen Auslöser vorzugsweise in der Steuer-, Schalt- und Befehlstechnik. Mögliche Ausführungsvarianten, ggf. auch in Form eines Reiheneinbaugeräts, sind beispielsweise ein Schütz, ein Relais, ein Leistungs-, ein Leitungs- oder auch ein Motorschutzschalter.A switching device with an electromagnetic release is preferably used in the control, switching and command technology. Possible design variants, possibly also in the form of a DIN rail mounted device, are, for example, a contactor, a relay, a power, a line or a motor protection switch.
Claims (11)
- Magnet yoke (1a-1h) of an electromagnetic release (14a-14c) for a switching device (15a-15c), having a base body (2a-2h) composed of a ferromagnetic material, and having a fixed contact mount as well as having a magnet core (3a-3h) which can be arranged at the end on a tripping coil (5a-5c),
characterized in that
the base body (2a-2h) is in the form of an integral unit with the fixed contact mount and the magnet core (3a-3h). - Magnet yoke according to Claim 1,
characterized in that
the magnet core (3a-3h) is designed to engage in the tripping coil (5a-5c). - Magnet yoke according to Claim 1,
characterized in that
the magnet core (3a-3h) has an effective core area (6) which is adjacent to the end of the tripping coil (5a-5c). - Magnet yoke according to one of Claims 1, 2 or 3,
characterized in that
the magnet core (3a-3h) is formed with an end piece (10a-10h) of the base body (2a-2h) as a U-shaped or closed profile. - Magnet yoke according to Claim 1, 2 or 3,
characterized in that
the magnet core (3a-3h) is formed with the end piece (10a-10h) of the base body (2a-2h) in the form of a plate. - Magnet yoke according to one of the preceding claims,
characterized in that
a pair of vanes (17a-17d) are adjacent to the magnet core (3a-3h) . - Magnet yoke according to Claim 1, 2 or 3,
characterized in that
the magnet core (3a-3h) is formed with the end piece (10a-10h) of the base body (2a-2h) at least approximately as a cylinder (20a, 20b). - Magnet yoke according to Claim 7,
characterized in that
the cylinder (20a, 20b) is in the form of a deep-drawn or thermoformed part. - Magnet yoke according to one of the preceding claims,
characterized in that
the magnet core (3a-3h) has at least one opening (9) for a tripping armature (7a-7c) to pass through. - Magnet yoke according to one of the preceding claims,
characterized in that
the free end (11a, 11b) of the base body (2a-2h) forms a limb (12) which has a cutout (13) arranged in it, which cutout (13) is used to guide the tripping armature (7a-7c). - Magnet yoke according to one of the preceding claims,
characterized in that
a projection (19) is provided for electrical connection to the tripping coil (5a-5c).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10126854 | 2001-06-01 | ||
DE2001126854 DE10126854A1 (en) | 2001-06-01 | 2001-06-01 | Magnetic yoke for electromagnetic trip of switching device has magnetic core cooperating with trip coil formed in one piece with base body of magnetic yoke |
PCT/DE2002/001823 WO2002099829A1 (en) | 2001-06-01 | 2002-05-21 | Magnet yoke of an electromagnetic tripping device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1393338A1 EP1393338A1 (en) | 2004-03-03 |
EP1393338B1 true EP1393338B1 (en) | 2008-05-07 |
Family
ID=7686976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02729898A Expired - Fee Related EP1393338B1 (en) | 2001-06-01 | 2002-05-21 | Magnet yoke of an electromagnetic tripping device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1393338B1 (en) |
CN (1) | CN1288690C (en) |
DE (2) | DE10126854A1 (en) |
ES (1) | ES2303855T3 (en) |
WO (1) | WO2002099829A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1473752B1 (en) * | 2003-04-30 | 2008-03-26 | Siemens Aktiengesellschaft | Electromagnetic trip device |
DE10331339A1 (en) | 2003-07-10 | 2005-02-03 | Siemens Ag | Electromagnetic switching device |
FR2858106B1 (en) * | 2003-07-22 | 2005-09-23 | Hager Electro | IMPROVED MAGNETIC SUBASSEMBLY AND CIRCUIT BREAKER HAVING SUCH A MAGNETIC SUBASSEMBLY |
DE102005020167A1 (en) * | 2005-04-30 | 2006-11-09 | Abb Patent Gmbh | Electromagnetic release for an electrical installation device |
DE102014215007A1 (en) * | 2014-07-30 | 2016-02-04 | Siemens Aktiengesellschaft | Protection switching device and magnetic yoke |
CN106206195B (en) * | 2016-08-31 | 2020-09-01 | 厦门宏发开关设备有限公司 | Electromagnetic tripping device and electromagnetic circuit breaker |
CN114083229B (en) * | 2021-11-04 | 2022-11-29 | 东芝水电设备(杭州)有限公司 | Method for manufacturing annular thick plate magnet yoke |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH616271A5 (en) * | 1977-06-27 | 1980-03-14 | Weber Ag Fab Elektro | |
CH659733A5 (en) * | 1983-07-07 | 1987-02-13 | Weber Ag Fab Elektro | Line protection circuit breaker |
DE9002197U1 (en) * | 1990-02-24 | 1991-06-27 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Circuit breaker with an electromagnetic release device |
DE29802348U1 (en) * | 1998-02-11 | 1998-04-23 | Siemens AG, 80333 München | Electromagnetic current release for an electrical circuit breaker |
DE19845476B4 (en) * | 1998-10-02 | 2004-08-12 | Aeg Niederspannungstechnik Gmbh & Co Kg | Magnetic system for miniature circuit breakers |
WO2000052723A1 (en) * | 1999-03-03 | 2000-09-08 | Abb Patent Gmbh | Magnetic trigger, especially for a circuit breaker, and circuit breaker having such a magnetic trigger |
-
2001
- 2001-06-01 DE DE2001126854 patent/DE10126854A1/en not_active Ceased
-
2002
- 2002-05-21 ES ES02729898T patent/ES2303855T3/en not_active Expired - Lifetime
- 2002-05-21 EP EP02729898A patent/EP1393338B1/en not_active Expired - Fee Related
- 2002-05-21 CN CN 02811007 patent/CN1288690C/en not_active Expired - Fee Related
- 2002-05-21 DE DE50212235T patent/DE50212235D1/en not_active Expired - Lifetime
- 2002-05-21 WO PCT/DE2002/001823 patent/WO2002099829A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
ES2303855T3 (en) | 2008-09-01 |
WO2002099829A1 (en) | 2002-12-12 |
DE10126854A1 (en) | 2002-12-19 |
DE50212235D1 (en) | 2008-06-19 |
CN1288690C (en) | 2006-12-06 |
CN1513193A (en) | 2004-07-14 |
EP1393338A1 (en) | 2004-03-03 |
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