EP0316295A2 - Trip device with holding magnet - Google Patents
Trip device with holding magnet Download PDFInfo
- Publication number
- EP0316295A2 EP0316295A2 EP88890235A EP88890235A EP0316295A2 EP 0316295 A2 EP0316295 A2 EP 0316295A2 EP 88890235 A EP88890235 A EP 88890235A EP 88890235 A EP88890235 A EP 88890235A EP 0316295 A2 EP0316295 A2 EP 0316295A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- window
- armature
- pole plates
- legs
- holding magnet
- 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.)
- Ceased
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/32—Electromagnetic mechanisms having permanently magnetised part
- H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
- H01H71/323—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with rotatable armature
Definitions
- the invention relates to a holding magnet release, in particular for residual current circuit breakers, with a yoke body which is accommodated in a housing and which consists of two L-shaped pole plates which are connected to one another with their longer legs, optionally via an intermediate plate, the legs of the pole plates resting against one another a window for receiving a coil winding is provided and the short legs of the pole plates are assigned a permanent magnet, preferably rotatably, and with a spring-loaded pivotable armature, which in its closed position rests on an armature support provided in the area of the window and its pivot axis in the area of the short leg of the pole plates.
- Holding magnet releases of the type considered here are known, for example, from AT-B-378 862 and 381 559.
- the yoke body In the case of holding magnet triggers of this type, it is also known to form the yoke body from two L-shaped pole plates which are connected to one another by means of an intermediate plate with their longer legs so that the shorter legs protrude on both sides. The result is a yoke body which is essentially T-shaped in plan and to whose T-bar a permanent magnet, as is known from AT-B-381 559, can be attached.
- the anchor assigned to this yoke body is e.g. as described in AT-B-378 862, designed and mounted on the yoke body.
- anchor support The free end of the anchor rests on a flat surface (anchor support).
- anchor support ground contact surfaces for the bearing end of the armature are provided on the short legs of the pole plates. The surfaces of the armature facing the mentioned support surfaces and the armature support are also ground.
- the release power depends on the cross section of the web, which limits the window provided in the yoke body, which receives the coil winding, in the area of the armature support. Since the anchor support, which is ground flat, is provided in this area, it has so far not been possible to achieve any precisely defined web cross-sections and therefore no defined release outputs.
- the aim is to keep the release power as low as possible with holding magnet releases.
- the object of the invention is to achieve a precisely defined cross-section of the web and thus a precisely defined tripping power in the case of a holding magnet release of the type mentioned at the beginning of the armature support.
- the anchor support is arranged on an elevation provided in the area of the window, which is shorter than the width of the window measured in the direction of the longitudinal extension of the longer legs of the pole plates.
- the cross section of the web provided on both sides of the elevation, which delimits the window in the yoke body on the armature side, is not changed when the anchor support is ground. It is therefore in your hand to set the triggering power to the desired value by choosing the dimensions of the web.
- Another advantage of the design according to the invention is that the rest of the construction of the yoke body and the armature and the components associated therewith need not be changed compared to the previously known designs of holding magnet releases.
- the elevation is symmetrical to the central plane of the window is aligned. In this embodiment it is ensured that the saturation required for triggering is achieved in both polarities of an alternating current at the same current strengths.
- the holding magnet release according to the invention will be designed in such a way that the surface of the armature remote from the pivot axis of the armature projects beyond the armature support on all sides.
- This preferred variant of the invention ensures that the armature support is completely covered even by displacements of the armature by its surface assigned to the armature support, so that the surface effective for the magnetic flux remains constant in this case as well.
- the yoke body 1 consists of two L-shaped pole plates 2 and 3.
- the pole plates 2 and 3 are on their longer legs 4 and 5 with the interposition of an intermediate plate 1 'with a thickness of, for example, 0.15 mm to each other in the plan essentially T-shaped yoke body 1 connected.
- the T-bar of the yoke body 1 is formed by the shorter legs 6 and 7 of the pole plates 2 and 3.
- a window 8 is provided, which serves to receive a coil winding, not shown.
- Another window 9 provided in the longer legs 4 and 5 for both pole sheets 2 and 3 serves to hold the yoke body 1 in a housing.
- an extension is provided in the housing onto which the yoke body 1 is pushed.
- the armature support 10 is formed by an elevation 11 which is arranged symmetrically to the window 8 and whose width is smaller than the width B of the window 8 measured in the longitudinal direction of the longer legs 4 and 5.
- Elevations 12 are also provided on the shorter legs 6 and 7 of the two pole plates 2 and 3, on the bearing surfaces 13 of which the bearing-side ends of the armature 14 are supported.
- the surfaces 10 and 13 of the four elevations 11 and 12 facing the anchor 14 are ground flat.
- the armature 14 shown in FIG. 3 is essentially fork-shaped, its surfaces 15 and 16 and 17 assigned to the elevations 11 and 12 of the yoke body 1 also being ground flat. Between the two arms 18 of the armature 14, a tongue 19 is provided, which has a hole 20 into which a tension spring loading the armature in the direction of the arrow in FIG. 4 can be hung.
- a bearing plate 21 is fastened to the bar of the T-shaped yoke body 1 formed by the shorter legs 6 and 7 of the two pole plates 2 and 3.
- the design of the bearing plate 21, which is fastened via claws 22 to the shorter legs 6 and 7 of the pole plates 2 and 3, is known per se from AT-B-381 599.
- the bearing plate 21 also serves to attach a permanent magnet to the Holding magnet release.
- cross section of the web 23 delimiting the window 8 on the side of the anchor support 10 is independent of the height of the elevation 11 which is ground to form the anchor support 10.
- the cross section of the web 23 can thus be selected to be smaller than in the known holding magnet releases, so that its saturation is reached earlier and the release performance of the holding magnet release is correspondingly smaller.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Electromagnets (AREA)
- Transformers For Measuring Instruments (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
Description
Die Erfindung betrifft einen Haltemagnetauslöser, insbesondere für Fehlerstromschutzschalter, mit in einem Gehäuse untergebrachtem Jochkörper, der aus zwei L-förmigen Polblechen besteht, die mit ihrem längeren Schenkeln, gegebenenfalls über ein Zwischenblech, aneinanderliegend miteinander verbunden sind, wobei in den aneinander anliegenden Schenkeln der Polbleche ein Fenster zur Aufnahme einer Spulenwicklung vorgesehen ist und wobei den kurzen Schenkeln der Polbleche ein Permanentmagnet vorzugsweise verdrehbar zugeordnet ist, und mit einem unter Federbelastung stehenden verschwenkbaren Anker, der in seiner Schließstellung an einer im Bereich des Fensters vorgesehenen Ankerauflage anliegt und dessen Schwenkachse im Bereich der kurzen Schenkel der Polbleche liegt.The invention relates to a holding magnet release, in particular for residual current circuit breakers, with a yoke body which is accommodated in a housing and which consists of two L-shaped pole plates which are connected to one another with their longer legs, optionally via an intermediate plate, the legs of the pole plates resting against one another a window for receiving a coil winding is provided and the short legs of the pole plates are assigned a permanent magnet, preferably rotatably, and with a spring-loaded pivotable armature, which in its closed position rests on an armature support provided in the area of the window and its pivot axis in the area of the short leg of the pole plates.
Haltemagnetauslöser der hier in Betracht gezogenen Bauart sind beispielsweise aus den AT-B-378 862 und 381 559 bekannt. Bei Haltemagnetauslösern dieser Bauart ist es weiters bekannt, den Jochkörper aus zwei L-förmigen Polblechen zu bilden, die über ein Zwischenblech mit ihren längeren Schenkeln aneinander anliegend so miteinander verbunden sind, daß die kürzeren Schenkel nach beiden Seiten wegstehen. Es ergibt sich so ein im Grundriß im wesentlichen T-förmiger Jochkörper, an dessen T-Balken ein Permanentmagnet, so wie dies aus der AT-B-381 559 bekannt ist, befestigt sein kann. Der diesem Jochkörper zugeordnete Anker ist z.B. so, wie in der AT-B-378 862 beschrieben, ausgebildet und am Jochkörper gelagert.Holding magnet releases of the type considered here are known, for example, from AT-B-378 862 and 381 559. In the case of holding magnet triggers of this type, it is also known to form the yoke body from two L-shaped pole plates which are connected to one another by means of an intermediate plate with their longer legs so that the shorter legs protrude on both sides. The result is a yoke body which is essentially T-shaped in plan and to whose T-bar a permanent magnet, as is known from AT-B-381 559, can be attached. The anchor assigned to this yoke body is e.g. as described in AT-B-378 862, designed and mounted on the yoke body.
Das freie Ende des Ankers liegt an einer plan geschliffenen Fläche (Ankerauflage) an. Ebenso sind an den kurzen Schenkeln der Polbleche geschliffene Auflageflächen für das Lagerende des Ankers vorgesehen. Die den genannten Auflageflächen und der Ankerauflage zugekehrten Flächen des Ankers sind ebenfalls geschliffen.The free end of the anchor rests on a flat surface (anchor support). Likewise, ground contact surfaces for the bearing end of the armature are provided on the short legs of the pole plates. The surfaces of the armature facing the mentioned support surfaces and the armature support are also ground.
Bei diesen bekannten Haltemagnetauslösern hängt die Auslöseleistung vom Querschnitt des Steges ab, der das im Jochkörper vorgesehene Fenster, das die Spulenwicklung aufnimmt, im Bereich der Ankerauflage begrenzt. Da in diesem Bereich die Ankerauflage vorgesehen ist, die plan geschliffen ist, konnten bislang keine genau definierten Stegquerschnitte und daher keine definierten Auslöseleistungen erzielt werden.In these known holding magnet releases, the release power depends on the cross section of the web, which limits the window provided in the yoke body, which receives the coil winding, in the area of the armature support. Since the anchor support, which is ground flat, is provided in this area, it has so far not been possible to achieve any precisely defined web cross-sections and therefore no defined release outputs.
An sich ist es das Bestreben, bei Haltemagnetauslösern die Auslöseleistung möglichst klein zu halten.In itself, the aim is to keep the release power as low as possible with holding magnet releases.
Der Erfindung liegt die Aufgabe zugrunde, bei einem Haltemagnetauslöser der eingangs genannten Gattung im Bereich der Ankerauflage einen genau definierten Stegquerschnitt und damit eine genau definierte Auslöseleistung zu erreichen.The object of the invention is to achieve a precisely defined cross-section of the web and thus a precisely defined tripping power in the case of a holding magnet release of the type mentioned at the beginning of the armature support.
Erfindungsgemäß wird dies dadurch erreicht, daß die Ankerauflage an einer im Bereich des Fensters vorgesehenen Erhebung angeordnet ist, die kürzer ist als die in Richtung der Längserstreckung der längeren Schenkel der Polbleche gemessene Breite des Fensters.According to the invention, this is achieved in that the anchor support is arranged on an elevation provided in the area of the window, which is shorter than the width of the window measured in the direction of the longitudinal extension of the longer legs of the pole plates.
Bei der erfindungsgemäßen Konstruktion wird beim Schleifen der Ankerauflage der beidseits der Erhebung vorgesehene Steg, der das Fenster im Jochkörper ankerseitig begrenzt, in seinem Querschnitt nicht verändert. Man hat es dadurch in der Hand, durch Wahl der Abmessungen des Steges die Auslöseleistung auf den gewünschten Wert einzustellen. Ein Vorteil der erfindungsgemäßen Ausbildung besteht weiters darin, daß die übrige Konstruktion des Jochkörpers und des Ankers und der diesen zugeordneten Bauteile gegenüber den bisher bekannten Konstruktionen von Haltemagnetauslösern nicht geändert werden braucht.In the construction according to the invention, the cross section of the web provided on both sides of the elevation, which delimits the window in the yoke body on the armature side, is not changed when the anchor support is ground. It is therefore in your hand to set the triggering power to the desired value by choosing the dimensions of the web. Another advantage of the design according to the invention is that the rest of the construction of the yoke body and the armature and the components associated therewith need not be changed compared to the previously known designs of holding magnet releases.
In einer Ausführungsfosrm der Erfindung ist vorgesehen, daß die Erhebung zur Mittelebene des Fensters symmetrisch ausgerichtet ist. Bei dieser Ausführungsform ist gewährleistet, daß die für das Auslösen nötige Sättigung in beiden Polaritäten eines Wechselstromes bei gleichen Stromstärken erreicht wird.In an embodiment of the invention it is provided that the elevation is symmetrical to the central plane of the window is aligned. In this embodiment it is ensured that the saturation required for triggering is achieved in both polarities of an alternating current at the same current strengths.
Für gewöhnlich wird man den erfindungsgemäßen Haltemagnetauslöser so ausbilden, daß die von der Schwenkachse des Ankers entfernt liegende Fläche des Ankers allseits über die Ankerauflage hinausragt. Diese bevorzugte Variante der Erfindung stellt sicher, daß die Ankerauflage auch bei Verschiebungen des Ankers durch dessen der Ankerauflage zugeordneter Fläche zur Gänze bedeckt wird, so daß die für den magnetischen Fluß wirksame Fläche auch in diesem Fall konstant bleibt.Usually, the holding magnet release according to the invention will be designed in such a way that the surface of the armature remote from the pivot axis of the armature projects beyond the armature support on all sides. This preferred variant of the invention ensures that the armature support is completely covered even by displacements of the armature by its surface assigned to the armature support, so that the surface effective for the magnetic flux remains constant in this case as well.
Weitere Einzelheiten und Merkmale der Erfindung ergeben sich aus der nachstehenden Beschreibung, in der auf die Zeichnungen Bezug genommen wird. Es zeigt
- Fig. 1 ein Polblech in Seitenansicht,
- Fig. 2 in Draufsicht einen Jochkörper aus zwei Polblechen,
- Fig. 3 eine Ansicht eines Ankers und
- Fig. 4 einen Jochkörper mit Lagerblech und Anker in Seitenansicht.
- 1 is a side view of a pole plate,
- 2 is a plan view of a yoke body made of two pole plates,
- Fig. 3 is a view of an anchor and
- Fig. 4 shows a yoke body with a bearing plate and anchor in a side view.
Beim erfindungsgemäßen Haltemagnetauslöser besteht der Jochkörper 1 aus zwei L-förmigen Polblechen 2 und 3. Die Polbleche 2 und 3 sind über ihre längeren Schenkel 4 und 5 unter Zwischenfügung eines Zwischenbleches 1′ mit einer Stärke von beispielsweise 0,15 mm miteinander zu dem im Grundriß im wesentlichen T-förmigen Jochkörper 1 verbunden. Der T-Balken des Jochkörperes 1 wird dabei von den kürzeren Schenkeln 6 und 7 der Polbleche 2 und 3 gebildet. In den längeren Schenkeln 4 und 5 der beiden Pol bleche 2 und 3 ist jeweils ein Fenster 8 vorgesehen, das zur Aufnahme einer nicht gezeigten Spulenwicklung dient.In the holding magnet release according to the invention, the
Ein weiteres, in den längeren Schenkeln 4 und 5 bei beiden Polbleche 2 und 3 vorgesehenes Fenster 9 dient zur Halterung des Jochkörpers 1 in einem Gehäuse. Hiezu ist im Gehäuse ein Ansatz vorgesehen, auf den der Jochkörper 1 aufgeschoben wird.Another window 9 provided in the
Die Ankerauflage 10 wird von einer Erhebung 11 gebildet, die zum Fenster 8 symmetrisch angeordnet ist und deren breite kleiner ist als die in Längsrichtung der längeren Schenkel 4 und 5 gemessene Breite B des Fensters 8.The
An den kürzeren Schenkeln 6 und 7 der beiden Polbleche 2 und 3 sind ebenfalls Erhebungen 12 vorgesehen, an deren Auflageflächen 13 sich die lagerseitigen Enden des Ankers 14 abstützen.
Die dem Anker 14 zugekehrten Flächen 10 und 13 der vier Erhebungen 11 und 12 sind plan geschliffen.The
Der in Fig. 3 gezeigte Anker 14 ist im wesentlichen gabelförmig ausgebildet, wobei seine den Erhebungen 11 und 12 des Jochkörpers 1 zugeordneten Flächen 15 sowie 16 und 17 ebenfalls plan geschliffen sind. Zwischen den beiden Armen 18 des Ankers 14 ist eine Zunge 19 vorgesehen, die ein Loch 20 aufweist, in das eine den Anker in Richtung des Pfeiles in Fig. 4 belastende Zugfeder eingehängt werden kann.The
Wie Fig. 4 zeigt, ist an dem von den kürzeren Schenkeln 6 und 7 der beiden Polbleche 2 und 3 gebildeten Balken des T-förmigen Jochkörpers 1 ein Lagerblech 21 befestigt. Die Ausführung des über Krallen 22 an den kürzeren Schenkeln 6 und 7 der Polbleche 2 und 3 befestigten Lagerblechs 21 ist aus der AT-B-381 599 an sich bekannt. Das Lagerblech 21 dient auch zur Befestigung eines Permanentmagneten des Haltemagnetauslösers.As shown in FIG. 4, a
Aus den Fig. 1 und 4 ist ersichtlich, daß der Querschnitt des das Fenster 8 auf der Seite der Ankerauflage 10 begrenzenden Steges 23 von der Höhe der Erhebung 11, die zur Bildung der Ankerauflage 10 geschliffen wird, unabhängig ist. Der Querschnitt des Steges 23 kann somit kleiner gewählt werden als bei den bekannten Haltemagnetauslösern, so daß dessen Sättigung früher erreicht wird und die Auslöseleistung des Haltemagnetauslösers dementsprechend kleiner ist.1 and 4 it can be seen that the cross section of the
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT2955/87 | 1987-11-09 | ||
AT295587A AT389018B (en) | 1987-11-09 | 1987-11-09 | HOLDING MAGNETIC RELEASE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0316295A2 true EP0316295A2 (en) | 1989-05-17 |
EP0316295A3 EP0316295A3 (en) | 1990-10-10 |
Family
ID=3543019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880890235 Ceased EP0316295A3 (en) | 1987-11-09 | 1988-09-12 | Trip device with holding magnet |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0316295A3 (en) |
AT (1) | AT389018B (en) |
AU (1) | AU604381B2 (en) |
ES (1) | ES2010645A4 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1777722A2 (en) * | 2005-10-20 | 2007-04-25 | Siemens Aktiengesellschaft | Magnetic system for a trip device. |
CN108074785A (en) * | 2017-12-12 | 2018-05-25 | 上海良信电器股份有限公司 | A kind of electromagnetic release |
CN108281333A (en) * | 2017-12-12 | 2018-07-13 | 上海良信电器股份有限公司 | A kind of magnetic circuit component of electromagnetic type trip gear |
CN108281332A (en) * | 2017-12-12 | 2018-07-13 | 上海良信电器股份有限公司 | A kind of electromagnetic type trip gear |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2848806A1 (en) * | 1977-12-13 | 1979-06-21 | Schaltelektronik Veb K | Sensitive holding magnet release for fault-current switch - has saturation grid in yokes near bridging armatures so that yoke cross=section in this region is small |
AT361571B (en) * | 1977-11-22 | 1981-03-25 | Felten & Guilleaume Ag Oester | LAYER YOKE HOLDING SOLENOIDER |
EP0051231A1 (en) * | 1980-11-04 | 1982-05-12 | BROWN, BOVERI & CIE Aktiengesellschaft | Electromagnetic holding or release device |
EP0073002A1 (en) * | 1981-08-21 | 1983-03-02 | BROWN, BOVERI & CIE Aktiengesellschaft | Electromagnetic tripping device |
AT381599B (en) * | 1984-03-05 | 1986-11-10 | Felten & Guilleaume Ag Oester | Holding magnet release |
EP0228345A1 (en) * | 1985-12-13 | 1987-07-08 | CMC Carl Maier + Cie AG | Magnetic-release mechanism for an earth fault circuit breaker |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT378862B (en) * | 1984-03-05 | 1985-10-10 | Felten & Guilleaume Ag Oester | HOLDING MAGNETIC RELEASE |
-
1987
- 1987-11-09 AT AT295587A patent/AT389018B/en not_active IP Right Cessation
-
1988
- 1988-09-12 ES ES88890235T patent/ES2010645A4/en active Pending
- 1988-09-12 EP EP19880890235 patent/EP0316295A3/en not_active Ceased
- 1988-11-09 AU AU24932/88A patent/AU604381B2/en not_active Ceased
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT361571B (en) * | 1977-11-22 | 1981-03-25 | Felten & Guilleaume Ag Oester | LAYER YOKE HOLDING SOLENOIDER |
DE2848806A1 (en) * | 1977-12-13 | 1979-06-21 | Schaltelektronik Veb K | Sensitive holding magnet release for fault-current switch - has saturation grid in yokes near bridging armatures so that yoke cross=section in this region is small |
EP0051231A1 (en) * | 1980-11-04 | 1982-05-12 | BROWN, BOVERI & CIE Aktiengesellschaft | Electromagnetic holding or release device |
EP0073002A1 (en) * | 1981-08-21 | 1983-03-02 | BROWN, BOVERI & CIE Aktiengesellschaft | Electromagnetic tripping device |
AT381599B (en) * | 1984-03-05 | 1986-11-10 | Felten & Guilleaume Ag Oester | Holding magnet release |
EP0228345A1 (en) * | 1985-12-13 | 1987-07-08 | CMC Carl Maier + Cie AG | Magnetic-release mechanism for an earth fault circuit breaker |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1777722A2 (en) * | 2005-10-20 | 2007-04-25 | Siemens Aktiengesellschaft | Magnetic system for a trip device. |
EP1777722A3 (en) * | 2005-10-20 | 2007-07-25 | Siemens Aktiengesellschaft | Magnetic system for a trip device. |
CN108074785A (en) * | 2017-12-12 | 2018-05-25 | 上海良信电器股份有限公司 | A kind of electromagnetic release |
CN108281333A (en) * | 2017-12-12 | 2018-07-13 | 上海良信电器股份有限公司 | A kind of magnetic circuit component of electromagnetic type trip gear |
CN108281332A (en) * | 2017-12-12 | 2018-07-13 | 上海良信电器股份有限公司 | A kind of electromagnetic type trip gear |
Also Published As
Publication number | Publication date |
---|---|
ES2010645A4 (en) | 1989-12-01 |
AU2493288A (en) | 1989-05-11 |
EP0316295A3 (en) | 1990-10-10 |
AT389018B (en) | 1989-10-10 |
AU604381B2 (en) | 1990-12-13 |
ATA295587A (en) | 1989-02-15 |
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