EP0528833B1 - Electromagnetic switching system and process for producing the same - Google Patents
Electromagnetic switching system and process for producing the same Download PDFInfo
- Publication number
- EP0528833B1 EP0528833B1 EP91908243A EP91908243A EP0528833B1 EP 0528833 B1 EP0528833 B1 EP 0528833B1 EP 91908243 A EP91908243 A EP 91908243A EP 91908243 A EP91908243 A EP 91908243A EP 0528833 B1 EP0528833 B1 EP 0528833B1
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- European Patent Office
- Prior art keywords
- core
- yoke
- coil former
- armature
- contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/34—Means for adjusting limits of movement; Mechanical means for adjusting returning force
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/34—Contacts characterised by the manner in which co-operating contacts engage by abutting with provision for adjusting position of contact relative to its co-operating contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
- H01H2050/446—Details of the insulating support of the coil, e.g. spool, bobbin, former
Definitions
- the invention relates to an electromagnetic switching system with a coil body made of insulating material carrying a winding, a core arranged in an axial recess of the coil body, which forms a pole face with a pole-side end and is fixedly connected to a yoke with a yoke-side end, a bearing mounted on the yoke, with the pole face of the core forming an armature working gap, at least one movable contact element operatively connected to the armature and at least one mating contact element fastened to a pole-side flange of the coil body.
- the invention also relates to a method for producing such a switching system.
- Such switching systems in the form of electromagnetic relays are known for example from DE-A-1 639 295 or FR-A-2 341 935.
- the contact force is determined by the contact contact. This is the additional way that the armature can still travel towards the pole face up to the stop after the contacts have closed. This contact movement and thus the contact force has hitherto been set by so-called core pole adjustment.
- the core is pressed into the coil body and with its yoke-side end into a yoke recess until it has reached a predetermined dimension with respect to the mating contact elements. If this push-in for adjustment takes place before the armature and the movable contact elements are put in place, the adjustment can only be carried out on the basis of the dimensions determined, with tolerances are difficult to control. However, if the core pole adjustment is carried out with the armature attached by pressing the core in over the armature, the armature can be deformed in an undesirable manner.
- the coil body connected to the yoke can retract due to the shrinkage in the direction of the yoke-side end, as a result of which the mating contact elements are also further removed from the movable contact elements, that is to say the contact force decreases. This affects the reliability of the switching system.
- the object of the invention is to provide an electromagnetic switching system of the type mentioned, in which shrinkage of the coil body material practically does not change the adjustment between the core pole face and mating contact elements and thus does not impair the contact, and in which both simple and stable attachment between the core and the yoke as well as an adjustment of the contact can be carried out easily.
- the invention is also intended to provide a method for advantageously producing and adjusting such a switching system.
- this object is achieved with a switching system of the type mentioned in that retaining lugs are stamped on the core in its pole-side end section, which penetrate into the material of the coil former and secure the core and the coil former against relative axial displacement.
- the coil former is not leaned against or connected to the yoke with its end facing away from the armature and the pole face, as is the case in conventional systems, but rather a connection between the core and the coil former is made in the region of its ends on the pole side.
- This non-positive and / or positive connection between the core and the bobbin thus has no or almost no axial offset to the mating contact elements, so that distortion in the plastic of the bobbin does not change the assignment between the core pole face and the mating contact elements. If the coil body shrinks, there is at most a free space between the yoke-side end of the coil body and the yoke, but this has no effect on the contact with the contact.
- the assignment between the core pole face and the mating contact elements does not depend on the attachment between the core and the yoke, this attachment can be carried out without regard to the adjustment before the armature is installed with a view to the best possible tight fit.
- the contact can be adjusted after the armature has been put in place by simply moving the coil body on the core, the displacement forces between the iron of the core and the plastic of the coil body being relatively small, so that there is no risk of the armature assembly being deformed when the contact is adjusted given is.
- the fixed connection sought according to the invention can be achieved at the pole-side end.
- the core is fixed in the coil body, for example, via three or four retaining lugs distributed over the circumference of the core, which initially grip the plastic of the coil body in a force-fitting manner, the connection increasingly becoming a positive connection due to the cold flow of the plastic.
- the transition from positive to positive locking is affected by heat, such as. B. occurs by heating the coil during operation, still favored.
- a further advantage of the adjustment shift of the entire magnet system compared to the coil body is that the change in gearing without translation is exactly the same as the amount of displacement of the magnet system, which enables a high accuracy of the adjustment.
- the coil body is supported on the yoke-side coil flange, for example, by contact pins which penetrate the yoke.
- Figure 1 shows in longitudinal section an electromagnetic relay with a coil body 1, which has two flanges 2 and 3, between which a winding 4 is applied.
- a core 5 with a pole-side end 5a and a yoke-side end 5b is arranged in the axial bore la of the coil former.
- the pole-side end 5a forms a pole face 6, while the yoke-side end 5b is pressed into a recess 7a of a yoke 7 and is fixed with notches 8.
- the yoke is bent at an angle; the leg connected to the core is designated 7b, while a second leg 7c extends parallel to the coil axis and forms a bearing for an armature 9.
- This armature 9 forms a working air gap with the pole face 6.
- a movable contact spring 10 is connected to the armature 9 and carries a contact piece 11.
- a fixed mating contact element 12 with a is in the coil flange 2 Contact piece 13 attached.
- This contact movement a must be set to a predetermined value by suitable adjustment. It must not change inappropriately during the life of the relay, for example due to the coil body shrinking. If, for example, as is often the case, the coil flange 3 is held in firm connection with the yoke leg 7b, the counter-contact element 12 could move away from the contact spring 10 by shrinking the coil former in the direction of the yoke leg 7b and thus reduce the contact.
- the core 5 in the pole-side end section 5a has, for example, four retaining lugs 14 distributed over the circumference, which are offset by 90 °, which are located in the area or in the vicinity of the coil flange 2 dig into the bobbin 1. They thus cause a fixation between the core and the bobbin in the area of the coil flange 2, i. H. with a minimal axial distance from the mating contact element 12. If the coil body shrinks, it will at most move away from the yoke leg 7b with the flange 3.
- the magnet system consisting of core 5, yoke 7 and armature 9 is retained in a fixed axial assignment to the contact elements.
- the core 5 When installing the relay, the core 5 is first inserted into the wound bobbin 1 and is independent of the Contact adjustment pressed into the yoke recess 7a and scored. In this case, the tool can be pressed directly onto the pole face 6 without an intermediate anchor, as a result of which a good tight fit between the core and the yoke and a good magnetic transition are ensured. After the armature and the contact elements have been installed, the contact a can then be adjusted. For this purpose, the magnet system can be moved in the axial direction relative to the coil body 1 by pressing on the core via the armature 9. The coil former is supported by contact pins 15, which engage the flange 3 through bores 16 of the yoke.
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Abstract
Description
Die Erfindung betrifft ein elektromagnetisches Schaltsystem mit einem eine Wicklung tragenden Spulenkörper aus Isolierstoff, einem in einer Axialausnehmung des Spulenkörpers angeordneten Kern, der mit einem polseitigen Ende eine Polfläche bildet und mit einem jochseitigen Ende mit einem Joch fest verbunden ist, einem an dem Joch gelagerten, mit der Polfläche des Kerns einen Arbeitsluftspalt bildenden Anker, mindestens einem mit dem Anker in Wirkverbindung stehenden beweglichen Kontaktelement und mindestens einem an einem polseitigen Flansch des Spulenkörpers befestigten Gegenkontaktelement. Außerdem betrifft die Erfindung ein Verfahren zur Herstellung eines derartigen Schaltsystems.The invention relates to an electromagnetic switching system with a coil body made of insulating material carrying a winding, a core arranged in an axial recess of the coil body, which forms a pole face with a pole-side end and is fixedly connected to a yoke with a yoke-side end, a bearing mounted on the yoke, with the pole face of the core forming an armature working gap, at least one movable contact element operatively connected to the armature and at least one mating contact element fastened to a pole-side flange of the coil body. The invention also relates to a method for producing such a switching system.
Derartige Schaltsysteme in Form von elektromagnetischen Relais sind beispielsweise aus DE-A-1 639 295 oder FR-A-2 341 935 bekannt. Allgemein ist es bei solchen Schaltsystemen bisher üblich, eine feste Zuordnung zwischen dem die Gegenkontaktelemente tragenden Spulenkörper einerseits und dem Joch andererseits vorzusehen, wobei über die Lagerung am Joch auch der Anker festgelegt ist. Die Kontaktkraft wird in derartigen Systemen durch den Kontaktmitgang bestimmt. Das ist der zusätzliche Weg, den der Anker nach dem Schließen der Kontakte noch in Richtung auf die Polfläche bis zum Anschlag zurücklegen kann. Dieser Kontaktmitgang und damit die Kontaktkraft wird bisher durch sogenannte Kernpoljustierung eingestellt. Dabei wird der Kern soweit in den Spulenkörper und mit seinem jochseitigen Ende in eine Jochausnehmung eingedrückt, bis er ein vorgegebenes Maß bezüglich der Gegenkontaktelemente erreicht hat. Erfolgt dieses Eindrücken zur Justierung vor dem Aufsetzen des Ankers und der beweglichen Kontaktelemente, so kann die Justierung nur aufgrund der ermittelten Maße vorgenommen werden, wobei Toleranzen schwer zu beherrschen sind. Erfolgt die Kernpoljustierung jedoch mit aufgesetztem Anker durch Eindrücken des Kerns über den Anker, so kann letzterer in unerwünschter Weise deformiert werden. Wenn der Kern im Joch durch Einpressen und Verkerben befestigt wird, treten hohe Füge- und Kerbkräfte auf, die nur dann sicher beherrscht werden, wenn der Kern direkt über die Kernpolfläche und ohne zwischenliegenden Anker in das Joch eingedrückt werden kann. Um eine Justierung des montierten Kerns auch nach Montage des Ankers noch vornehmen zu können, wurde auch bereits vorgeschlagen (DE-A-31 48 052), den Kern über ein Feingewinde im Joch zu befestigen und durch Verdrehen des Kerns nach der Ankermontage eine Justierung vorzunehmen. Das Feingewinde bedeutet jedoch zusätzliche kostspielige Fertigungsgänge.Such switching systems in the form of electromagnetic relays are known for example from DE-A-1 639 295 or FR-A-2 341 935. In general, it has hitherto been customary in such switching systems to provide a fixed association between the coil body carrying the counter-contact elements on the one hand and the yoke on the other hand, the armature also being fixed via the bearing on the yoke. In such systems, the contact force is determined by the contact contact. This is the additional way that the armature can still travel towards the pole face up to the stop after the contacts have closed. This contact movement and thus the contact force has hitherto been set by so-called core pole adjustment. The core is pressed into the coil body and with its yoke-side end into a yoke recess until it has reached a predetermined dimension with respect to the mating contact elements. If this push-in for adjustment takes place before the armature and the movable contact elements are put in place, the adjustment can only be carried out on the basis of the dimensions determined, with tolerances are difficult to control. However, if the core pole adjustment is carried out with the armature attached by pressing the core in over the armature, the armature can be deformed in an undesirable manner. When the core is fastened in the yoke by pressing and notching, high joining and notching forces occur which can only be mastered safely if the core can be pressed into the yoke directly via the core pole face and without an anchor in between. In order to be able to make an adjustment of the assembled core even after the armature has been installed, it has also already been proposed (DE-A-31 48 052) to fix the core via a fine thread in the yoke and to make an adjustment by turning the core after the anchor assembly . However, the fine thread means additional costly production processes.
Aus der DE-A-2 226 061 ist auch bereits ein Elektromagnet bekannt, bei dem zur Fixierung des Spulenkörpers auf dem Magnetkern im Bereich der Innenwandung des Spulenkörpers federnde Rastlappen vorgesehen sind, welche in komplementären Einschnitten des Magnetkerns formschlüssig aufgenommen werden. Damit wird jedoch nur eine unzureichende Sicherung gegen Relativverschiebung des Spulenkörpers auf dem Magnetjoch, insbesondere nur in einer Richtung, erreicht. Eine in der Beschreibungseinleitung dort erwähnte Klemmung des Spulenkörpers an nicht näher definierten Nasen des Magnetkerns wird dagegen als nachteilig bezeichnet.From DE-A-2 226 061 an electromagnet is also already known, in which resilient locking tabs are provided for fixing the coil body on the magnetic core in the region of the inner wall of the coil body, which are received in a form-fitting manner in complementary incisions of the magnetic core. However, this only provides insufficient protection against relative displacement of the coil body on the magnetic yoke, in particular only in one direction. A clamping of the coil body to noses of the magnetic core, which are not defined in more detail in the introduction to the description, is described as disadvantageous.
Selbst wenn bei der Fertigung jedoch eine genaue Justierung zwischen Gegenkontaktelementen und Kernpolfläche vorgenommen wurde, kann durch Alterung und damit verbundene Schrumpfung des Spulenkörpers eine Dejustierung auftreten. Beispielsweise kann sich der mit dem Joch verbundene Spulenkörper durch die Schrumpfung in Richtung auf das jochseitige Ende zurückziehen, wodurch auch die Gegenkontaktelemente von den beweglichen Kontaktelementen weiter entfernt werden, also die Kontaktkraft abnimmt. Die Zuverlässigkeit des Schaltsystems wird dadurch beeinträchtigt.However, even if a precise adjustment was made between the counter-contact elements and the core pole face during production, a misalignment can occur due to aging and the associated shrinkage of the coil body. For example, the coil body connected to the yoke can retract due to the shrinkage in the direction of the yoke-side end, as a result of which the mating contact elements are also further removed from the movable contact elements, that is to say the contact force decreases. This affects the reliability of the switching system.
Aufgabe der Erfindung ist es, ein elektromagnetisches Schaltsystem der eingangs genannten Art zu schaffen, bei dem eine Schrumpfung des Spulenkörpermaterials die Justierung zwischen Kernpolfläche und Gegenkontaktelementen praktisch nicht verändert und somit den Kontaktmitgang nicht beeinträchtigt und bei dem sowohl eine einfache und stabile Befestigung zwischen Kern und Joch als auch eine Justierung des Kontaktmitgangs problemlos durchgeführt werden können. Mit der Erfindung soll auch ein Verfahren zur vorteilhaften Herstellung und Justierung eines derartigen Schaltsystems angegeben werden.The object of the invention is to provide an electromagnetic switching system of the type mentioned, in which shrinkage of the coil body material practically does not change the adjustment between the core pole face and mating contact elements and thus does not impair the contact, and in which both simple and stable attachment between the core and the yoke as well as an adjustment of the contact can be carried out easily. The invention is also intended to provide a method for advantageously producing and adjusting such a switching system.
Erfindungsgemäß wird diese Aufgabe mit einem Schaltsystem der eingangs genannten Art dadurch gelöst, daß am Kern in seinem polseitigen Endabschnitt Haltenasen angeprägt sind, die in das Material des Spulenkörpers eindringen und den Kern und den Spulenkörper gegen relative Axialverschiebung sichern.According to the invention this object is achieved with a switching system of the type mentioned in that retaining lugs are stamped on the core in its pole-side end section, which penetrate into the material of the coil former and secure the core and the coil former against relative axial displacement.
Bei dem erfindungsgemäßen Schaltsystem wird also der Spulenkörper nicht wie bei herkömmlichen Systemen mit seinem vom Anker und von der Polfläche abgewandten Ende an das Joch angelehnt oder mit diesem verbunden, vielmehr wird gezielt eine Verbindung zwischen Kern und Spulenkörper im Bereich ihrer polseitigen Enden vorgenommen. Diese kraft- und/oder formschlüssige Verbindung zwischen Kern und Spulenkörper besitzt somit keinen oder nahezu keinen axialen Versatz zu den Gegenkontaktelementen, so daß Verzugserscheinungen im Kunststoff des Spulenkörpers die Zuordnung zwischen Kernpolfläche und Gegenkontaktelementen nicht verändern. Wenn der Spulenkörper schrumpft, entsteht allenfalls ein Freiraum zwischen dem jochseitigen Ende des Spulenkörpers und dem Joch, was sich jedoch auf den Kontaktmitgang nicht auswirkt.In the switching system according to the invention, therefore, the coil former is not leaned against or connected to the yoke with its end facing away from the armature and the pole face, as is the case in conventional systems, but rather a connection between the core and the coil former is made in the region of its ends on the pole side. This non-positive and / or positive connection between the core and the bobbin thus has no or almost no axial offset to the mating contact elements, so that distortion in the plastic of the bobbin does not change the assignment between the core pole face and the mating contact elements. If the coil body shrinks, there is at most a free space between the yoke-side end of the coil body and the yoke, but this has no effect on the contact with the contact.
Da bei dem erfindungsgemäßen Schaltsystem die Zuordnung zwischen Kernpolfläche und Gegenkontaktelementen nicht von der Befestigung zwischen Kern und Joch abhängt, kann diese Befestigung ohne Rücksicht auf die Justierung vor der Montage des Ankers im Hinblick auf einen bestmöglichen Festsitz erfolgen. Die Justierung des Kontaktmitgangs jedoch kann nach Aufsetzen des Ankers durch einfache Verschiebung des Spulenkörpers auf dem Kern erfolgen, wobei die Verschiebekräfte zwischen dem Eisen des Kerns und dem Kunststoff des Spulenkörpers relativ klein sind, so daß die Gefahr einer Deformierung der Ankerbaugruppe beim Justieren des Kontaktmitgangs nicht gegeben ist. Trotzdem kann dabei die erfindungsgemäß angestrebte feste Verbindung am polseitigen Ende erzielt werden. Die Fixierung des Kerns im Spulenkörper erfolgt beispielsweise über drei oder vier über den Kernumfang verteilte Haltenasen, die sich zunächst kraftschlüssig in den Kunststoff des Spulenkörpers einkrallen, wobei die Verbindung zunehmend durch Kaltfluß des Kunststoffes in einen Formschluß übergeht. Der Übergang von Kraft- in Formschluß wird durch Wärmeeinwirkung, wie sie z. B. durch die Aufheizung der Spule im Betrieb auftritt, noch begünstigt.Since, in the switching system according to the invention, the assignment between the core pole face and the mating contact elements does not depend on the attachment between the core and the yoke, this attachment can be carried out without regard to the adjustment before the armature is installed with a view to the best possible tight fit. However, the contact can be adjusted after the armature has been put in place by simply moving the coil body on the core, the displacement forces between the iron of the core and the plastic of the coil body being relatively small, so that there is no risk of the armature assembly being deformed when the contact is adjusted given is. Nevertheless, the fixed connection sought according to the invention can be achieved at the pole-side end. The core is fixed in the coil body, for example, via three or four retaining lugs distributed over the circumference of the core, which initially grip the plastic of the coil body in a force-fitting manner, the connection increasingly becoming a positive connection due to the cold flow of the plastic. The transition from positive to positive locking is affected by heat, such as. B. occurs by heating the coil during operation, still favored.
Ein weiterer Vorteil der Justierverschiebung des gesamten Magnetsystems gegenüber dem Spulenkörper besteht darin, daß die Mitgangänderung ohne Übersetzung exakt mit dem Betrag des Verschiebeweges des Magnetsystems identisch ist, was eine hohe Genauigkeit der Justierung ermöglicht. Zum Verschieben des Magnetsystems wird der Spulenkörper beispielsweise durch Anlagestifte, die das Joch durchdringen, am jochseitigen Spulenflansch gestützt.A further advantage of the adjustment shift of the entire magnet system compared to the coil body is that the change in gearing without translation is exactly the same as the amount of displacement of the magnet system, which enables a high accuracy of the adjustment. To move the magnet system, the coil body is supported on the yoke-side coil flange, for example, by contact pins which penetrate the yoke.
Die Erfindung wird nachfolgend an einem Ausführungsbeispiel anhand der Zeichnung näher erläutert. Es zeigt
Figur 1 ein erfindungsgemäßes Schaltsystem in einem Schnitt längs der Spulenachse,Figur 2 und 3 den Kern in zwei Ansichten.
- 1 shows a switching system according to the invention in a section along the coil axis,
- Figures 2 and 3, the core in two views.
Figur 1 zeigt im Längsschnitt ein elektromagnetisches Relais mit einem Spulenkörper 1, welcher zwei Flansche 2 und 3 aufweist, zwischen denen eine Wicklung 4 aufgebracht ist. In der Axialbohrung la des Spulenkörpers ist ein Kern 5 mit einem polseitigen Ende 5a und einem jochseitigen Ende 5b angeordnet. Das polseitige Ende 5a bildet eine Polfläche 6, während das jochseitige Ende 5b in eine Ausnehmung 7a eines Joches 7 eingepreßt und mit Kerben 8 fixiert ist. Das Joch ist winkelförmig gebogen; der mit dem Kern verbundene Schenkel ist mit 7b bezeichnet, während ein zweiter Schenkel 7c sich parallel zur Spulenachse erstreckt und eine Lagerung für einen Anker 9 bildet. Dieser Anker 9 bildet mit der Polfläche 6 einen Arbeitsluftspalt.Figure 1 shows in longitudinal section an electromagnetic relay with a
Mit dem Anker 9 ist eine bewegliche Kontaktfeder 10 verbunden, die ein Kontaktstück 11 trägt. Außerdem ist in dem Spulenflansch 2 ein feststehendes Gegenkontaktelement 12 mit einem Kontaktstück 13 befestigt. Bei Erregung des Relais wird der Anker 9 an das polseitige Ende 5a des Kerns angezogen und schließt dabei den Kontakt zwischen den Kontaktstücken 11 und 13. Dabei schließt der Kontakt bereits zu einem Zeitpunkt, in welchem der Anker noch nicht an der Polfläche 6 anliegt. Bis zu diesem Anliegen des Ankers an der Polfläche 6 würde das Kontaktstück 11 noch einen Weg a zurücklegen, wenn das Gegenkontaktelement 12 bzw. 13 nicht vorhanden wäre. Dieser Weg a wird als Kontaktmitgang bezeichnet. Er ist notwendig, um den erforderlichen Kontaktdruck sicherzustellen und eine bestimmte Abbrandsicherheit der Kontaktstücke zu gewährleisten. Dieser Kontaktmitgang a muß durch geeignete Justierung auf einen vorgegebenen Wert eingestellt werden. Er darf sich auch während der Lebensdauer des Relais nicht in unzulässiger Weise ändern, beispielsweise durch ein Schrumpfen des Spulenkörpers. Würde beispielsweise, wie es vielfach üblich ist, der Spulenflansch 3 in fester Verbindung mit dem Jochschenkel 7b gehalten, so könnte sich durch ein Schrumpfen des Spulenkörpers in Richtung auf den Jochschenkel 7b das Gegenkontaktelement 12 von der Kontaktfeder 10 wegbewegen und so den Kontaktmitgang verringern.A
Um bei dem erfindungsgemäßen Schaltsystem eine Beeinträchtigung des Kontaktmitgangs durch Alterung des Spulenkörpers weitgehend auszuschließen, besitzt der Kern 5 in dem polseitigen Endabschnitt 5a über den Umfang verteilt beispielsweise vier um 90° versetzte Haltenasen 14, welche sich im Bereich bzw. in der Nähe des Spulenflansches 2 in den Spulenkörper 1 eingraben. Sie bewirken so eine Fixierung zwischen Kern und Spulenkörper im Bereich des Spulenflansches 2, d. h. mit minimaler axialer Entfernung vom Gegenkontaktelement 12. Wenn der Spulenkörper schrumpft, wird er sich allenfalls mit dem Flansch 3 von dem Jochschenkel 7b entfernen. Das Magnetsystem aus Kern 5, Joch 7 und Anker 9 bleibt in fester axialer Zuordnung zu den Kontaktelementen erhalten.In order in the switching system according to the invention to largely rule out any impairment of contact contact due to aging of the coil body, the
Bei der Montage des Relais wird in den bewickelten Spulenkörper 1 zunächst der Kern 5 eingeschoben und unabhängig von der Kontaktjustierung in die Jochausnehmung 7a eingepreßt und verkerbt. Hierbei kann mit dem Werkzeug direkt auf die Polfläche 6, ohne zwischenliegenden Anker, gedrückt werden, wodurch ein guter Festsitz zwischen Kern und Joch erzielt und ein guter magnetischer Übergang gewährleistet werden. Nach der Montage des Ankers und der Kontaktelemente kann dann eine Justierung des Kontaktmitgangs a vorgenommen werden. Zu diesem Zweck kann das Magnetsystem durch Drücken auf den Kern über den Anker 9 in Axialrichtung gegenüber dem Spulenkörper 1 verschoben werden. Der Spulenkörper wird dabei durch Anlagestifte 15, welche durch Bohrungen 16 des Joches hindurch an dem Flansch 3 angreifen, abgestützt. Bei dieser Justierung durch Axialverschiebung sind zwischen dem Kunststoffmaterial des Spulenkörpers und dem Kern keine allzu großen Verschiebekräfte notwendig, so daß auch der Anker nicht deformiert wird. Die Haltenasen, die sich dabei in das Material des Spulenkörpers 1 eingraben, wirken zunächst kraftschlüssig. Mit zunehmender Alterung und durch Kaltfluß des Kunststoffmaterials geht dieser Kraftschluß allmählich in einen Formschluß über. Dieser Vorgang wird durch Wärmeeinwirkung, etwa durch die Aufheizung der Spule beim Betrieb, noch begünstigt.When installing the relay, the
Claims (5)
- Electromagnetic switching system having- a coil former (1) made of insulating material carrying a winding (4),- a core (5) which is arranged in an axial cutout (1a) of the coil former (1) and forms a pole face (6) with one end (5a) on the pole side and is firmly joined to a yoke (7) with one end (5b) on the yoke side,- an armature (9) mounted on the yoke (7) and forming a working air gap with the pole face (6) of the core (5),- at least one movable contact element (10) that is operatively connected to the armature (9), and- at least one counter-contact element (12) fastened on a flange (2) of the coil former (1) on the pole side,characterised in that holding lugs (14) which penetrate into the material of the coil former (1) are impressed on the core (5) in its end section (5a) on the pole side and secure the core (5) and the coil former (1) against relative axial displacement.
- Switching system according to Claim 1, characterised in that a plurality of holding lugs (14) are arranged distributed over the circumference of the core (5).
- Process for producing an electromagnetic switching system according to Claim 1 or 2, characterised in that the core (5) is pushed through the wound coil former (1), pressed into the coil former with the end (5a) on the pole side and simultaneously pressed into a cutout (7a) of the yoke (7) with its end (5b) on the yoke side, and in that only thereafter is the armature (9) with the movable contact element (10) put in place.
- Process according to Claim 3, characterised in that, after the armature (9) with the movable contact element (10) has been put in place, the coil former (1) carrying the counter-contact element (12) is displaced in axial direction relative to the unit comprising core (5) and yoke (7).
- Process according to Claim 4, characterised in that during the displacement between core (5) and coil former (1), the coil former is supported by support pins (15) which are guided through cutouts (16) of the yoke.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP90109037 | 1990-05-14 | ||
| EP90109037 | 1990-05-14 | ||
| PCT/EP1991/000836 WO1991018408A1 (en) | 1990-05-14 | 1991-05-02 | Electromagnetic switching system and process for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0528833A1 EP0528833A1 (en) | 1993-03-03 |
| EP0528833B1 true EP0528833B1 (en) | 1994-08-03 |
Family
ID=8203976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91908243A Expired - Lifetime EP0528833B1 (en) | 1990-05-14 | 1991-05-02 | Electromagnetic switching system and process for producing the same |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5332985A (en) |
| EP (1) | EP0528833B1 (en) |
| JP (1) | JPH05506957A (en) |
| AT (1) | ATE109592T1 (en) |
| DE (1) | DE59102444D1 (en) |
| ES (1) | ES2057888T3 (en) |
| WO (1) | WO1991018408A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10110964C2 (en) * | 2000-06-09 | 2002-10-31 | Ems Chemie Ag | Thermoplastic multilayer composites |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4322648C1 (en) * | 1993-07-07 | 1994-08-18 | Siemens Ag | Apparatus having a coil with four legs |
| US5905422A (en) * | 1996-11-26 | 1999-05-18 | Siemens Electromechanical Components, Inc. | Relay adjustment structure |
| DE19726055C1 (en) * | 1997-06-19 | 1998-11-12 | Siemens Ag | Electromagnet system with method of jointing core and yoke |
| DE19747167C1 (en) * | 1997-10-24 | 1999-04-29 | Siemens Ag | Electromagnetic relay e.g. for high-load currents |
| ES2264543T3 (en) * | 2002-11-15 | 2007-01-01 | Tyco Electronics Amp Gmbh | COATING FOR EXTRUSION OF A MAGNET SYSTEM FOR A RELAY. |
| JP4803206B2 (en) * | 2008-04-24 | 2011-10-26 | パナソニック電工株式会社 | Electromagnet for relay |
| JP5246145B2 (en) * | 2009-11-26 | 2013-07-24 | アンデン株式会社 | Method for adjusting contact pressure of electromagnetic relay |
| JP6037730B2 (en) * | 2012-08-31 | 2016-12-07 | 富士通コンポーネント株式会社 | Electromagnetic relay |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1200321A (en) * | 1967-01-16 | 1970-07-29 | Lucas Industries Ltd | Electromagnetic relays |
| DE2226061A1 (en) * | 1972-05-29 | 1973-12-13 | Harting Elektro W | ELECTROMAGNET |
| DE2705961A1 (en) * | 1976-02-19 | 1977-08-25 | Lucas Industries Ltd | ELECTROMAGNETIC RELAY |
| DE3148052A1 (en) * | 1981-12-04 | 1983-06-09 | Robert Bosch Gmbh, 7000 Stuttgart | Electromagnetic relay and method for its production |
-
1991
- 1991-05-02 JP JP91508179A patent/JPH05506957A/en active Pending
- 1991-05-02 WO PCT/EP1991/000836 patent/WO1991018408A1/en active IP Right Grant
- 1991-05-02 US US07/952,728 patent/US5332985A/en not_active Expired - Fee Related
- 1991-05-02 ES ES91908243T patent/ES2057888T3/en not_active Expired - Lifetime
- 1991-05-02 DE DE59102444T patent/DE59102444D1/en not_active Expired - Fee Related
- 1991-05-02 AT AT91908243T patent/ATE109592T1/en active
- 1991-05-02 EP EP91908243A patent/EP0528833B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10110964C2 (en) * | 2000-06-09 | 2002-10-31 | Ems Chemie Ag | Thermoplastic multilayer composites |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE109592T1 (en) | 1994-08-15 |
| JPH05506957A (en) | 1993-10-07 |
| WO1991018408A1 (en) | 1991-11-28 |
| US5332985A (en) | 1994-07-26 |
| EP0528833A1 (en) | 1993-03-03 |
| ES2057888T3 (en) | 1994-10-16 |
| DE59102444D1 (en) | 1994-09-08 |
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