EP0056085B1 - Polarised electromagnetic relay - Google Patents

Polarised electromagnetic relay Download PDF

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Publication number
EP0056085B1
EP0056085B1 EP81108176A EP81108176A EP0056085B1 EP 0056085 B1 EP0056085 B1 EP 0056085B1 EP 81108176 A EP81108176 A EP 81108176A EP 81108176 A EP81108176 A EP 81108176A EP 0056085 B1 EP0056085 B1 EP 0056085B1
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EP
European Patent Office
Prior art keywords
carrier
relay
coil
pole plates
contact
Prior art date
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Expired
Application number
EP81108176A
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German (de)
French (fr)
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EP0056085A1 (en
Inventor
Helmut Ing.-Grad. Schedele
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Siemens AG
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Siemens AG
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Application filed by Siemens AG filed Critical Siemens AG
Priority to AT81108176T priority Critical patent/ATE15568T1/en
Publication of EP0056085A1 publication Critical patent/EP0056085A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/043—Details particular to miniaturised relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2236—Polarised relays comprising pivotable armature, pivoting at extremity or bending point of armature
    • H01H51/2245—Armature inside coil
    • H01H51/2254—Contact forms part of armature

Definitions

  • the invention relates to a polarized electromagnetic relay with a one-piece coil body serving as the base body, with a ferromagnetic contact tongue arranged approximately axially in the interior of the coil body, which has one end inserted into grooves on both sides of the coil body parallel to the coil axis, with at least one elongated one Section is fixed essentially by the entire length of the winding, ferromagnetic carrier is fixed and with its opposite end between two angled, held by plug-in the coil flange of a permanent magnet movable, both pole plates have parallel to the contact tongue contacting sections.
  • Such a relay is known from FR-A-2 392 486 (or DE-B-2 723 220). There, a very high-quality relay is described, in which both a good closure of the permanent magnet circuit and a good coupling of the control flux circuit are achieved by the end coupling of the permanent magnet to the pole shoes and by additional flux guiding tabs of these pole shoes.
  • the carrier for the contact tongue in the interior of the coil body is designed as an elongated adjusting plate which, after the entire relay has been hermetically sealed, can be deformed by an externally applied magnetic field for adjusting the contact tongue.
  • This known relay is based in its entire construction on the fact that in all cases all parts of the relay are cast in the protective cap.
  • a special device for generating magnetic pulses and for measuring the armature position at each adjustment step is also required.
  • the development of such devices can be unprofitable if the requirements for the relay are not so high and only relatively small quantities are used. In such cases, the simplest and cheapest construction can be required.
  • the object of the invention is to design a relay of the type mentioned in the construction in such a way that the carrier for the contact tongue and the pole plates finally lie in a precisely defined position relative to one another due to pre-adjustment and assembly in the coil former.
  • this object is achieved in that the grooves in the interior of the coil body extend over its entire length up to the pole plates, that the undersides of the grooves are extended in the coil flange carrying the pole plates, and thus continuous mutual support surfaces for both the carrier and for one form with it aligned contacting section of one pole plate, while the second pole plate with its contacting section rests on a support shoulder formed in the same coil flange, and that the carrier is continuous, i. that is, with a full cross-section, stretched over the entire width between the two grooves.
  • the carrier is firmly anchored in the grooves of the coil body on both sides up to its end.
  • it is not magnetically adjustable, but this opens up the possibility of adjusting the contact tongue attached to it in a mounting device before inserting the carrier into the coil former.
  • the contact tongue is adjusted relative to the carrier; but since the carrier is positioned precisely due to its long guide in the coil body relative to the pole plates also inserted in guides and the guides of the carrier and the one pole plate have merging contact surfaces, the contact tongue is therefore also quite well adjusted with respect to the pole plates. This adjustment is retained when the carrier is inserted into the coil body.
  • Another advantage of the carrier designed according to the invention for the contact tongue is that it reduces the magnetic flux, i. i.e., in particular the control flow, practically in the entire area within the coil winding and thereby improves the magnetic circuit of the relay.
  • the contact tongue which has a relatively small cross-section in order to achieve a low mass and a high elasticity, only needs to bridge a relatively small gap between the carrier and the pole plate aligned with it when switching.
  • a further improvement in the stability and mounting accuracy of the carrier for the contact tongue and at the same time an improvement in the magnetic circuit is achieved in that the carrier has two elongated sections arranged in two parallel planes and including the contact tongue between them, each of which is arranged in grooves and each aligned with one of the pole plates.
  • the coil flange receiving the pole plates is closed on the end face and forms an upwardly open chamber which has guide grooves for the two pole plates and openings at the bottom for the connection side of the relay for connecting pins molded onto the pole plates, and a circumferential, close with a flat lid edible edge.
  • This design of the coil flange as an upwardly open chamber simplifies assembly in that the pole plates themselves are completely accommodated in the chamber. This means that no gaps between the pole plates and the coil former need to be sealed.
  • This chamber is closed by placing the flat cover, for example made of plastic, on the edge of the coil former flange, which is also made of plastic.
  • the relay is closed with a ferromagnetic cap, which also serves to guide the flow, in a dust-tight manner and is ready for use.
  • a hermetic seal is also possible.
  • the cap is filled with potting compound in the usual way, the openings of the connecting pins also being sealed.
  • the elongated sections of the carrier and the contact surfaces of the contact tongue and the pole plates can each be parallel to the connection level of the relay.
  • the functional position can be rotated through 90 ° with respect to the coil axis, so that the pole faces and the elongated sections of the carrier are each perpendicular to the connection plane of the relay.
  • the carrier of the contact tongue has a molded-on connecting pin in the usual way on the side of the coil former opposite the pole plates.
  • the relay according to FIGS. 1 to 4 has a coil former 1, inside which there is a contact space 2 with an approximately axially arranged contact tongue 3.
  • This contact tongue 3 is connected at its fastening end 3a to a cranked tab 4 of a carrier 5 via a welding point 4a.
  • This carrier 5 consists of ferromagnetic material and has an elongated section 6, which is inserted parallel to the contact tongue 3 in grooves 7 and 8 of the coil body.
  • the section 6 is made so long that it extends essentially through the entire length of the coil winding 9 and extends with its free end 6a to the vicinity of the pole plates 10 and 11.
  • the pole plates 10 and 11 sit in a chamber 12 of the coil flange 1a and are held there in grooves 13 and 14, respectively. They are cranked and, with their sections 10a, 11a, include a permanent magnet 15 arranged in the chamber 12, which in the present example is arranged asymmetrically to achieve a monostable switching characteristic.
  • the sections 10b and 11b enclose the free end 3b of the contact tongue 3 between them. Like the end of the contact tongue, they are covered with contact material and form working air gaps and contact points with the contact tongue.
  • the free end 3b of the contact tongue is forked in a known manner in order to achieve double contact.
  • the pole plates 10 and 11 each have molded (or welded) connection pins 10c and 11c, which are guided in openings 16 and 17 of the coil former from the chamber 12 to the connection side of the relay.
  • the chamber 12 is provided on the end face with an end wall 18 and, apart from the openings 16 and 17 mentioned, only has an opening at the top through which the permanent magnet 15 and the pole plates 10 and 11 can be inserted.
  • This opening can be closed in a simple manner with a flat cover 19, which is simply placed on the peripheral edge 20 and connected in a suitable manner, by gluing, welding or the like, to the coil former.
  • the carrier 5 for the contact tongue is bent at right angles in the region of the coil flange 1b and is provided with a large-area flux transition plate 21, on which a connecting pin 22 is also formed.
  • a good coupling of the carrier to the ferromagnetic housing cap 23 is achieved, which is placed over the coil former and, in addition to the closure of the magnetic circuit, also causes magnetic shielding of the relay.
  • the relay can be hermetically sealed. In this case, in order to prevent the potting compound from flowing into the interior 2, the opening of the coil flange 1b is covered with a fleece 25.
  • the magnetically conductive contact tongue 3 is fastened to the carrier 5 or to the tab 4 by welding, riveting or screwing.
  • the contact tongue is adjusted in an adjusting device, the contact tongue being brought into a precisely defined position relative to the elongated section 6 of the carrier by bending the tab 4.
  • This assembly unit can then be inserted into the coil body tube, the position of the contact tongue no longer changing.
  • the coil former has a support shoulder 26 for the contacting section 11b of the pole plate 11 and bilateral contact points 27 of the grooves 7 and 8 for the contacting section 10b of the pole plate 10.
  • the contact points 27 are used for both Flow guide plate 6 as well as for the section 10b of the pole plate 10 through the Undersides of the grooves 7 and 8 formed.
  • the flow guide plate 6 is pressed against the support points 27 by a cap-shaped wart 6b, so that it is aligned with the section 10b.
  • a comparison of the permanent magnet is provided, which provides a final setting of the relay parameters.
  • FIGS. 5 to 8 show a modified embodiment of the relay according to the invention, also in different views.
  • This relay which is only partially shown, has a coil former 31 with a contact space 32 lying in the coil tube, in which a contact tongue 33 is arranged approximately axially parallel.
  • the contact tongue is rotated here by 90 ° about the coil axis, so that its main plane and also the contact surfaces are perpendicular to the connection plane of the relay.
  • the contact tongue 33 is fastened with its fastening end 33a between two adjusting tabs 34 and 34 'of a carrier 35 which has two flux guide plates 36 and 36' which run parallel to the contact tongue up to the vicinity of the pole plates, not shown, and enclose the contact tongue between them.
  • this relay is constructed similarly to that previously described.
  • the flux guide plates 36 and 36 ' are guided in grooves 37 and 38 or 37' and 38 'of the coil body.
  • a coil winding 39 is applied to the coil former 31.
  • the end 33b of the contact tongue 33 interacts with the contact surfaces of pole plates, which are bent in the same way as in the example of FIG. 1.
  • the carrier 35 has, in the extension of the two flow guide plates 36 and 36 ', flow transition plates 51 and 51' with an integrally formed connecting pin 52.
  • the entire relay is surrounded by a ferromagnetic cap 53 and sealed as required with potting compound 54, a Fleece 55 prevents the potting compound from penetrating into the coil interior.
  • the connector pin 52 of the contact tongue, the connector pins of the pole plates and the coil connector pins 56 emerge in a predetermined pattern from the connector side of the relay. In the usual way, spacer warts 57 are also formed on the underside of the coil body.
  • the assembly is carried out similarly to the previously described relay in such a way that the contact tongue with the flux guide plates is pre-adjusted in a device and then inserted into the coil body.

Abstract

A polarized electromagnetic relay has a coil core body comprised of insulating material having a ferromagnetic movable contact element disposed in a hollow interior thereof, the movable contact element having a free end movable between two pole plates which are mounted in a flange of said coil body and which enclose a permanent magnet in a chamber of the coil body. The movable contact element is secured at its opposite end to a carrier which forms a ferromagnetic flux guidance plate extending substantially through the entire interior of the coil which is wound about the coil body and which terminates in close proximity to the pole plates.

Description

Die Erfindung bezieht sich auf ein polarisiertes elektromagnetisches Relais mit einem als Grundkörper dienenden einteiligen Spulenkörper mit einer im Inneren des Spulenkörpers etwa axial angeordneten, ferromagnetischen Kontaktzunge, welche mit einem Ende an einem parallel zur Spulenachse in beiderseitigen Nuten des Spulenkörpers eingesteckten, sich mit mindestens einem langgestreckten Abschnitt im wesentlichen durch die gesamte Wicklungslänge erstreckenden, ferromagnetischen Träger befestigt ist und mit ihrem entgegengesetzten Ende zwischen zwei abgewinkelten, durch Steckbefestigung in dem Spulenflansch gehaltenen Polblechen eines Dauermagneten bewegbar ist, wobei beide Polbleche parallel zur Kontaktzunge verlaufende kontaktgebende Abschnitte aufweisen.The invention relates to a polarized electromagnetic relay with a one-piece coil body serving as the base body, with a ferromagnetic contact tongue arranged approximately axially in the interior of the coil body, which has one end inserted into grooves on both sides of the coil body parallel to the coil axis, with at least one elongated one Section is fixed essentially by the entire length of the winding, ferromagnetic carrier is fixed and with its opposite end between two angled, held by plug-in the coil flange of a permanent magnet movable, both pole plates have parallel to the contact tongue contacting sections.

Ein derartiges Relais ist aus der FR-A-2 392 486 (bzw. DE-B-2 723 220) bekannt. Dort ist ein sehr hochwertiges Relais beschrieben, bei dem durch die stirnseitige Ankopplung des Dauermagneten an die Polschuhe und durch zusätzliche Flußführungslappen dieser Polschuhe sowohl ein guter Schluß des Dauermagnetkreises als auch eine gute Ankopplung des Steuerflußkreises erreicht wird. Der Träger für die Kontaktzunge im Inneren des Spulenkörpers ist als langgestrecktes Justierblech ausgebildet, welches nach dem hermetisch dichten Vergießen des gesamten Relais noch durch ein von außen angelegtes Magnetfeld zur Justierung der Kontaktzunge deformiert werden kann.Such a relay is known from FR-A-2 392 486 (or DE-B-2 723 220). There, a very high-quality relay is described, in which both a good closure of the permanent magnet circuit and a good coupling of the control flux circuit are achieved by the end coupling of the permanent magnet to the pole shoes and by additional flux guiding tabs of these pole shoes. The carrier for the contact tongue in the interior of the coil body is designed as an elongated adjusting plate which, after the entire relay has been hermetically sealed, can be deformed by an externally applied magnetic field for adjusting the contact tongue.

Dieses bekannte Relais ist in seiner gesamten Konstruktion darauf abgestellt, daß in jedem Fall alle Teile des Relais in der Schutzkappe vergossen werden. Für die dort vorgesehene magnetische Justierung ist außerdem eine spezielle Vorrichtung für die Erzeugung von Magnetimpulsen und für die jeweilige Messung der Ankerstellung bei jedem Justierschritt erforderlich. Die Entwicklung solcher Vorrichtungen kann jedoch dann unrentabel sein, wenn die Anforderungen an das Relais nicht so hoch gestellt und nur verhältnismäßig kleine Stückzahlen gebraucht werden. In solchen Fällen kann eine möglichst einfache und billige Konstruktion verlangt werden.This known relay is based in its entire construction on the fact that in all cases all parts of the relay are cast in the protective cap. For the magnetic adjustment provided there, a special device for generating magnetic pulses and for measuring the armature position at each adjustment step is also required. However, the development of such devices can be unprofitable if the requirements for the relay are not so high and only relatively small quantities are used. In such cases, the simplest and cheapest construction can be required.

Bei dem bekannten Relais ist jedoch wegen der ohnehin nach der Montage vorgenommenen magnetischen Justierung von der Konstruktion her kein besonderer Wert darauf gelegt, bereits durch die mechanische Montage eine genaue Zuordnung zwischen Kontaktzunge bzw. ihrem Träger einerseits und den Polblechen andererseits zu erreichen.In the known relay, however, due to the magnetic adjustment made after the assembly anyway, no particular importance is attached to the construction to achieve an exact assignment between the contact tongue or its carrier on the one hand and the pole plates on the other hand through mechanical assembly.

Aufgabe der Erfindung ist es, ein Relais der eingangs genannten Art von der Konstruktion her so zu gestalten, daß der Träger für die Kontaktzunge und die Polbleche aufgrund einer außerhalb vorgenommenen Vorjustierung und der Montage in dem Spulenkörper schließlich in genau definierter Position zueinander liegen.The object of the invention is to design a relay of the type mentioned in the construction in such a way that the carrier for the contact tongue and the pole plates finally lie in a precisely defined position relative to one another due to pre-adjustment and assembly in the coil former.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Nuten im Inneren des Spulenkörpers über dessen gesamte Länge bis zu den Polblechen verlaufen, daß die Unterseiten der Nuten in den die Polbleche tragenden Spulenflansch verlängert sind und damit durchgehende beiderseitige Auflageflächen sowohl für den Träger als auch für einen mit ihm fluchtenden kontaktgebenden Abschnitt des einen Polbleches bilden, während das zweite Polblech mit seinem kontaktgebenden Abschnitt auf einer in dem gleichen Spulenflansch angeformten Auflageschulter aufliegt, und daß der Träger sich durchgehend, d. h., mit vollem Querschnitt, über die gesamte Breite zwischen den beiden Nuten erstrecKt.According to the invention, this object is achieved in that the grooves in the interior of the coil body extend over its entire length up to the pole plates, that the undersides of the grooves are extended in the coil flange carrying the pole plates, and thus continuous mutual support surfaces for both the carrier and for one form with it aligned contacting section of one pole plate, while the second pole plate with its contacting section rests on a support shoulder formed in the same coil flange, and that the carrier is continuous, i. that is, with a full cross-section, stretched over the entire width between the two grooves.

Bei dem erfindungsgemäß gestalteten Relais ist der Träger in den Nuten des Spulenkörpers bis zu seinem Ende beiderseits fest verankert. Dadurch ist er zwar nicht magnetisch justierbar, aber damit eröffnet sich die Möglichkeit, vor dem Einstecken des Trägers in den Spulenkörper die an ihm befestigte Kontaktzunge in einer Montagevorrichtung zu justieren. Die Kontaktzunge wird dabei gegenüber dem Träger justiert; da aber der Träger durch seine lange Führung im Spulenkörper gegenüber den ebenfalls in Führungen eingesteckten Polblechen genau positioniert ist und die Führungen des Trägers und des einen Polbleches ineir nder übergehende Auflageflächen besitzen, ist damit die Kontaktzunge auch gegenüber den Polblechen recht gut justiert. Diese Justierung bleibt beim Einstecken des Trägers in den Spulenkörper erhalten.In the relay designed according to the invention, the carrier is firmly anchored in the grooves of the coil body on both sides up to its end. As a result, it is not magnetically adjustable, but this opens up the possibility of adjusting the contact tongue attached to it in a mounting device before inserting the carrier into the coil former. The contact tongue is adjusted relative to the carrier; but since the carrier is positioned precisely due to its long guide in the coil body relative to the pole plates also inserted in guides and the guides of the carrier and the one pole plate have merging contact surfaces, the contact tongue is therefore also quite well adjusted with respect to the pole plates. This adjustment is retained when the carrier is inserted into the coil body.

Ein weiterer Vorteil des erfindungsgemäß gestalteten Trägers für die Kontaktzunge besteht darin, daß er den Magnetfluß, d. h., insbesondere den Steuerfluß, praktisch im gesamten Bereich innerhalb der Spulenwicklung führt und dadurch den Magnetkreis des Relais verbessert. Die Kontaktzunge, die zur Erzielung einer geringen Masse und einer hohen Elastizität einen relativ geringen Querschnitt besitzt, braucht beim Schalten lediglich einen verhältnismäßig kleinen Spalt zwischen dem Träger und dem mit ihm fluchtenden Polblech zu überbrücken.Another advantage of the carrier designed according to the invention for the contact tongue is that it reduces the magnetic flux, i. i.e., in particular the control flow, practically in the entire area within the coil winding and thereby improves the magnetic circuit of the relay. The contact tongue, which has a relatively small cross-section in order to achieve a low mass and a high elasticity, only needs to bridge a relatively small gap between the carrier and the pole plate aligned with it when switching.

Eine weitem Verbesserung der Stabilität und Montagegenauigkeit des Trägers für die Kontaktzunge und zugleich eine Verbesserung des Magnetkreises erreicht man dadurch, daß der Träger zwei langgestreckte, in zwei parallelen Ebenen angeordnete und die Kontaktzunge zwischen sich einschließende Abschnitte aufweist, von denen jeder in Nuten angeordnet ist und jeweils mit einem der Polbleche fluchtet.A further improvement in the stability and mounting accuracy of the carrier for the contact tongue and at the same time an improvement in the magnetic circuit is achieved in that the carrier has two elongated sections arranged in two parallel planes and including the contact tongue between them, each of which is arranged in grooves and each aligned with one of the pole plates.

In einer zweckmäßigen Ausführungsform des Relais ist der die Polbleche aufnehmende Spulenflansch stirnseitig geschlossen und bildet eine nach oben offene Kammer, welche Führungsnuten für die beiden Polbleche und Durchbrüche nach unten zur Anschlußseite des Relais für an den Polblechen angeformte Anschlußstifte aufweist sowie an ihrer Oberseite einen umlaufenden, mit einem ebenen Deckel abschließbaren Rand besitzt. Diese Ausbildung des Spulenflansches als nach oben offene Kammer vereinfacht die Montage insofern, als die Polbleche selbst ganz in der Kammer aufgenommen werden. Damit brauchen keine Spalte zwischen Polblechen und Spulenkörper abgedichtet zu werden. Durch Aufsetzen des ebenen Deckels, beispielsweise aus Kunststoff, auf den ebenfalls aus Kunststoff bestehenden Rand des Spulenkörperflansches wird diese Kammer verschlossen. Damit ist das Relais mit einer aufgesetzten ferromagnetischen Kappe, welche auch zur Flußführung dient, staubdicht geschlossen und einsatzfähig. Auch ein hermetischer Abschluß ist möglich. Zu diesem Zweck wird die Kappe in üblicher Weise mit Vergußmasse gefüllt, wobei auch die Durchbrüche der Anschlußstifte mit abgedichtetet werden.In an expedient embodiment of the relay, the coil flange receiving the pole plates is closed on the end face and forms an upwardly open chamber which has guide grooves for the two pole plates and openings at the bottom for the connection side of the relay for connecting pins molded onto the pole plates, and a circumferential, close with a flat lid edible edge. This design of the coil flange as an upwardly open chamber simplifies assembly in that the pole plates themselves are completely accommodated in the chamber. This means that no gaps between the pole plates and the coil former need to be sealed. This chamber is closed by placing the flat cover, for example made of plastic, on the edge of the coil former flange, which is also made of plastic. The relay is closed with a ferromagnetic cap, which also serves to guide the flow, in a dust-tight manner and is ready for use. A hermetic seal is also possible. For this purpose, the cap is filled with potting compound in the usual way, the openings of the connecting pins also being sealed.

Die langgestreckten Abschnitte des Trägers sowie die Kontaktflächen der Kontaktzunge und der Polbleche können jeweils parallel zur Anschlußebene des Relais liegen. In einer anderen Ausführungsform kann die Funktionslage um 90° bezüglich der Spulenachse gedreht werden, so daß die Polflächen und die langgestreckten Abschnitte des Trägers jeweils senkrecht zur Anschlußebene des Relais liegen.The elongated sections of the carrier and the contact surfaces of the contact tongue and the pole plates can each be parallel to the connection level of the relay. In another embodiment, the functional position can be rotated through 90 ° with respect to the coil axis, so that the pole faces and the elongated sections of the carrier are each perpendicular to the connection plane of the relay.

Der Träger der Kontaktzunge besitzt in üblicher Weise an der den Polblechen entgegengesetzten Seite des Spulenkörpers einen angeformten Anschlußstift. Dabei ist es zweckmäßig, zur Verbesserung der magnetischen Ankopplung des Trägers an die ferromagnetische Gehäusekappe diesen mit einem großflächigen Flußübergangsblech zu versehen, welches parallel zur Stirnwand der Gehäusekappe auf der Stirnseite des Spulenkörpers aufliegt.The carrier of the contact tongue has a molded-on connecting pin in the usual way on the side of the coil former opposite the pole plates. In order to improve the magnetic coupling of the carrier to the ferromagnetic housing cap, it is expedient to provide the carrier with a large-area flux transition plate which rests parallel to the end wall of the housing cap on the end face of the coil former.

Die Erfindung wird nachfolgend an Ausführungsbeispielen anhand der Zeichnung näher erläutert. Es zeigen

  • Fig. 1 bis 4 ein erfindungsgemäßes Relais in verschiedenen Ansichten,
  • Fig. 5 bis 8 eine Abwandlung des vorgenannten Relais mit gedrehter Funktionslage der Kontaktzunge.
The invention is explained in more detail below using exemplary embodiments with reference to the drawing. Show it
  • 1 to 4 an inventive relay in different views,
  • Fig. 5 to 8 a modification of the aforementioned relay with rotated functional position of the contact tongue.

Das Relais nach den Fig. 1 bis 4 besitzt einen Spulenkörper 1, in dessen Innerem ein Kontaktraum 2 mit einer etwa axial angeordneten Kontaktzunge 3 liegt. Diese Kontaktzunge 3 ist an ihrem Befestigungsende 3a mit einem abgekröpften Lappen 4 eines Trägers 5 über einen Schweißpunkt 4a verbunden. Dieser Träger 5 besteht aus ferromagnetischem Material und besitzt einen langgestreckten Abschnitt 6, welcher parallel zur Kontaktzunge 3 in Nuten 7 und 8 des Spulenkörpers eingesteckt ist. Der Abschnitt 6 ist so lang ausgeführt, daß er sich im wesentlichen durch die ganze Länge der Spulenwicklung 9 erstreckt und mit seinem freien Ende 6a bis in die Nähe der Polbleche 10 und 11 reicht.The relay according to FIGS. 1 to 4 has a coil former 1, inside which there is a contact space 2 with an approximately axially arranged contact tongue 3. This contact tongue 3 is connected at its fastening end 3a to a cranked tab 4 of a carrier 5 via a welding point 4a. This carrier 5 consists of ferromagnetic material and has an elongated section 6, which is inserted parallel to the contact tongue 3 in grooves 7 and 8 of the coil body. The section 6 is made so long that it extends essentially through the entire length of the coil winding 9 and extends with its free end 6a to the vicinity of the pole plates 10 and 11.

Die Polbleche 10 und 11 sitzen in einer Kammer 12 des Spulenflansches 1a und sind dort in Nuten 13 bzw. 14 gehalten. Sie sind gekröpft ausgebildet und schließen mit ihren Abschnitten 10a, 11a einen in der Kammer 12 angeordneten Dauermagneten 15 ein, welcher im vorliegenden Beispiel unsymmetrisch zur Erzielung einer monostabilen Schaltcharakteristik angeordnet ist. Die Abschnitte 10b und 11 b schließen zwischen sich das freie Ende 3b der Kontaktzunge 3 ein. Sie sind ebenso wie das Ende der Kontaktzunge mit Kontaktwerkstoff belegt und bilden mit der Kontaktzunge jeweils Arbeitsluftspalte und Kontaktstellen. Das freie Ende 3b der Kontaktzunge ist in bekannter Weise zur Erzielung einer Doppelkontaktgabe gabelförmig gespalten.The pole plates 10 and 11 sit in a chamber 12 of the coil flange 1a and are held there in grooves 13 and 14, respectively. They are cranked and, with their sections 10a, 11a, include a permanent magnet 15 arranged in the chamber 12, which in the present example is arranged asymmetrically to achieve a monostable switching characteristic. The sections 10b and 11b enclose the free end 3b of the contact tongue 3 between them. Like the end of the contact tongue, they are covered with contact material and form working air gaps and contact points with the contact tongue. The free end 3b of the contact tongue is forked in a known manner in order to achieve double contact.

Die Polbleche 10 und 11 besitzen jeweils angeformte (oder auch angeschweißte) Anschlußstifte 10c und 11c, welche in Durchbrüchen 16 bzw. 17 des Spulenkörpers von der Kammer 12 zur Anschlußseite des Relais geführt sind. Die Kammer 12 ist stirnseitig mit einer Abschlußwand 18 versehen und besitzt, abgesehen von den erwähnten Durchbrüchen 16 und 17, nur nach oben eine Öffnung, durch die der Dauermagnet 15 sowie die Polbleche 10 und 11 eingesetzt werden können. Diese Öffnung kann auf einfache Weise mit einem ebenen Deckel 19 verschlossen werden, der einfach auf den umlaufenden Rand 20 aufgesetzt und in geeigneter Weise, durch Kleben, Schweißen oder dergl., mit dem Spulenkörper verbunden wird.The pole plates 10 and 11 each have molded (or welded) connection pins 10c and 11c, which are guided in openings 16 and 17 of the coil former from the chamber 12 to the connection side of the relay. The chamber 12 is provided on the end face with an end wall 18 and, apart from the openings 16 and 17 mentioned, only has an opening at the top through which the permanent magnet 15 and the pole plates 10 and 11 can be inserted. This opening can be closed in a simple manner with a flat cover 19, which is simply placed on the peripheral edge 20 and connected in a suitable manner, by gluing, welding or the like, to the coil former.

Der Träger 5 für die Kontaktzunge ist im Bereich des Spulenflansches 1b rechtwinklig abgebogen und mit einem großflächigen Flußübergangsblech 21 versehen, an welchem außerdem ein Anschlußstift 22 angeformt ist. Mit diesem Flußübergangsblech 21 wird eine gute Ankopplung des Trägers an die ferromagnetische Gehäusekappe 23 erreicht, welche über den Spulenkörper gesetzt ist und neben der Schließung des Magnetkreises auch eine magnetische Abschirmung des Relais bewirkt. Durch Ausgießen der Kappe 23 mit Vergußmasse 24 kann das Relais hermetisch abgedichtet werden. Um dabei das Einfließen der Vergußmasse in den Innenraum 2 zu vermeiden, wird in diesem Fall die Öffnung des Spulenflansches 1 b zuvor mit einem Vlies 25 abgedeckt.The carrier 5 for the contact tongue is bent at right angles in the region of the coil flange 1b and is provided with a large-area flux transition plate 21, on which a connecting pin 22 is also formed. With this flux transition plate 21, a good coupling of the carrier to the ferromagnetic housing cap 23 is achieved, which is placed over the coil former and, in addition to the closure of the magnetic circuit, also causes magnetic shielding of the relay. By pouring the cap 23 with sealing compound 24, the relay can be hermetically sealed. In this case, in order to prevent the potting compound from flowing into the interior 2, the opening of the coil flange 1b is covered with a fleece 25.

Die magnetsich leitende Kontaktzunge 3 ist durch Schweißung, Nietung oder auch Verschraubung am Träger 5 bzw. an dem Lappen 4 befestigt. Vor der Montage des Trägers im Spulenkörper erfolgt die Justierung der Kontaktzunge in einer Justiervorrichtung, wobei die Kontaktzunge durch Biegen des Lappens 4 in eine genau definierte Stellung gegenüber dem langgestreckten Abschnitt 6 des Trägers gebracht wird. Danach kann diese Montageeinheit in das Spulenkörperrohr eingeschoben werden, wobei sich die Stellung der Kontaktzunge nicht mehr verändert. Um auch für die Polbleche eine definierte Stellung festzulegen, besitzt der Spulenkörper eine Auflageschulter 26 für den kontaktgebenden Abschnitt 11 b des Polbleches 11 sowie beidseitige Auflagestellen 27 der Nuten 7 und 8 für den kontaktgebenden Abschnitt 10b des Polbleches 10. Die Auflagestellen 27 werden sowohl für das Flußführungsblech 6 als auch für den Abschnitt 10b des Polbleches 10 durch die Unterseiten der Nuten 7 und 8 gebildet. Durch eine kappenförmige Warze 6b wird das Flußführungsblech 6 gegen die Auflagestellen 27 gepreßt, so daß es mit dem Abschnitt 10b fluchtet. Zusätzlich zu dieser mechanisch definierten Positionierung der funktionell zusammengehörenden Relaisteile ist noch ein Abgleich des Dauermagneten vorgesehen, der eine endgültige Einstellung der Relaiskennwerte erbringt.The magnetically conductive contact tongue 3 is fastened to the carrier 5 or to the tab 4 by welding, riveting or screwing. Before the carrier is installed in the coil body, the contact tongue is adjusted in an adjusting device, the contact tongue being brought into a precisely defined position relative to the elongated section 6 of the carrier by bending the tab 4. This assembly unit can then be inserted into the coil body tube, the position of the contact tongue no longer changing. In order to also define a defined position for the pole plates, the coil former has a support shoulder 26 for the contacting section 11b of the pole plate 11 and bilateral contact points 27 of the grooves 7 and 8 for the contacting section 10b of the pole plate 10. The contact points 27 are used for both Flow guide plate 6 as well as for the section 10b of the pole plate 10 through the Undersides of the grooves 7 and 8 formed. The flow guide plate 6 is pressed against the support points 27 by a cap-shaped wart 6b, so that it is aligned with the section 10b. In addition to this mechanically defined positioning of the functionally related relay parts, a comparison of the permanent magnet is provided, which provides a final setting of the relay parameters.

Die Fig. 5 bis 8 zeigen eine abgewandelte Ausführungsform des erfindungsgemäßen Relais, ebenfalls in verschiedenen Ansichten. Dieses nur teilweise dargestellte Relais besitzt einen Spulenkörper 31 mit einem im Spulenrohr liegenden Kontaktraum 32, in welchem eine Kontaktzunge 33 etwa achsparallel angeordnet ist. Gegenüber dem Relais nach den Fig. 1 bis 4 ist hier die Kontaktzunge um 90° um die Spulenachse gedreht, so daß ihre Hauptebene und auch die Kontaktflächen senkrecht auf der Anschlußebene des Relais stehen. Die Kontaktzunge 33 ist mit ihrem Befestigungsende 33a zwischen zwei Justierlappen 34 und 34' eines Trägers 35 befestigt, welcher zwei Flußführungsbleche 36 und 36' besitzt, die parallel zur Kontaktzunge bis in die Nähe der nicht gezeigten Polbleche verlaufen und die Kontaktzunge zwischen sich einschließen.5 to 8 show a modified embodiment of the relay according to the invention, also in different views. This relay, which is only partially shown, has a coil former 31 with a contact space 32 lying in the coil tube, in which a contact tongue 33 is arranged approximately axially parallel. Compared to the relay according to FIGS. 1 to 4, the contact tongue is rotated here by 90 ° about the coil axis, so that its main plane and also the contact surfaces are perpendicular to the connection plane of the relay. The contact tongue 33 is fastened with its fastening end 33a between two adjusting tabs 34 and 34 'of a carrier 35 which has two flux guide plates 36 and 36' which run parallel to the contact tongue up to the vicinity of the pole plates, not shown, and enclose the contact tongue between them.

Ansonsten ist dieses Relais ähnlich aufgebaut wie das vorher beschriebene. Die Flußführungsbleche 36 und 36' sind in Nuten 37 und 38 bzw. 37' und 38' des Spulenkörpers geführt. Eine Spulenwicklung 39 ist auf den Spulenkörper 31 aufgebracht. Das Ende 33b der Kontaktzunge 33 wirkt mit den Kontaktflächen von Polblechen zusammen, die in gleicher Weise abgekröpft ausgebildet sind wie bei dem Beispiel von Fig. 1.Otherwise, this relay is constructed similarly to that previously described. The flux guide plates 36 and 36 'are guided in grooves 37 and 38 or 37' and 38 'of the coil body. A coil winding 39 is applied to the coil former 31. The end 33b of the contact tongue 33 interacts with the contact surfaces of pole plates, which are bent in the same way as in the example of FIG. 1.

Im Bereich des Spulenflansches 31b besitzt der Träger 35 in Verlängerung der beiden Flußführungsbleche 36 und 36' jeweils Flußübergangsbleche 51 und 51' mit einem angeformten Anschlußstift 52. Das gesamte Relais ist mit einer ferromagnetischen Kappe 53 umgeben und nach Bedarf mit Vergußmasse 54 abgedichtet, wobei ein Vlies 55 das Eindringen der Vergußmasse in den Spuleninnenraum verhindert. Der Anschlußstift 52 der Kontaktzunge, die Anschlußstifte der Polbleche sowie die Spulenanschlußstifte 56 treten in einem vorgegebenen Raster zur Anschlußseite des Relais aus. In üblicher Weise sind auch Abstandswarzen 57 an der Unterseite des Spulenkörpers angeformt.In the area of the coil flange 31b, the carrier 35 has, in the extension of the two flow guide plates 36 and 36 ', flow transition plates 51 and 51' with an integrally formed connecting pin 52. The entire relay is surrounded by a ferromagnetic cap 53 and sealed as required with potting compound 54, a Fleece 55 prevents the potting compound from penetrating into the coil interior. The connector pin 52 of the contact tongue, the connector pins of the pole plates and the coil connector pins 56 emerge in a predetermined pattern from the connector side of the relay. In the usual way, spacer warts 57 are also formed on the underside of the coil body.

Die Montage erfolgt ähnlich wie beim vorher beschriebenen Relais in der Weise, daß die Kontaktzunge mit den Flußführungsblechen in einer Vorrichtung vorjustiert und dann in den Spulenkörper eingeschoben wird.The assembly is carried out similarly to the previously described relay in such a way that the contact tongue with the flux guide plates is pre-adjusted in a device and then inserted into the coil body.

Claims (7)

1. A polarised electromagnetic relay comprising a one-piece coil body (1; 31) which serves as a basic body, a ferromagnetic contact tongue (3; 33) which is arranged approximately axially within the coil body and is secured at one end (3a; 33a) to a ferromagnetic carrier (5; 35) which is inserted parallel to the coil axis into grooves (7, 8; 37, 37', 38, 38') on both sides of the coil body (1; 31) and at least one elongate section (6; 36, 36') of which extends basically through the entire length of the winding, and which can be moved at its opposite end (3b; 33b) between two angled pole plates (10, 11), attached by a plug connection to the coil flange (1a; 31a), of a permanent magnet (15), the two pole plates (10, 11) having contact-making sections (10b, 11b) which are parallel to the contact tongue (3; 33), characterized in that the grooves (7, 8; 37, 37', 38, 38') in the interior of the coil body (1; 31) extend over the entire length thereof to the pole plates (10, 11); that the bottoms of the grooves (7, 8; 37, 37', 38, 38') are extended into the coil flange (1a; 31a) which carries the pole plates (10, 11) and thus form continuous bearing surfaces (27) on both sides for both the carrier (5, 6; 35, 36) and for a contact-making section (10b) of the first pole plate (10) in alignment with the carrier, whilst the contact-making section of the second pole plate (11) rests on a bearing shoulder (26) which is moulded to the same coil flange (1a); and that the carrier (5, 6; 35, 36, 36') extends continuously, i.e. over its full cross-section, across the entire width between the two grooves (7, 8; 37, 37', 38, 38').
2. A relay as claimed in claim 1, characterized in that the carrier (35) has two elongate sections (36, 36') which are arranged in parallel planes, which enclose the contact tongue (33), and each of which is inserted into grooves (37, 37', 38, 38') and is in alignment with one of the pole plates (10,11).
3. A relay as claimed in claim 2, characterized in that the carrier (5, 6) is pressed by means of a stud (6b) which is formed in the central region of its elongate section (6) and which contacts the coil body (1 against the common bearing surfaces (27) of the carrier (5, 6) and the pole plate (10).
4. A relay as claimed in one of claims 1 to 3, characterized in that the coil flange (1a) which accommodates the pole plates (10, 11) is closed at its end and forms a chamber (12) which is open in the radial direction and which has guide grooves (13, 14) for the two pole plates (10, 11) and in the downwards direction of the terminal side of the relay has openings (16, 17) for the terminal pins (10c, 11c) which are formed at the pole plates, and on its upper side has a continuous edge (20) which can be closed by a flat cover (19).
5. A relay as claimed in claim 4, characterized in that the elongate sections (6) of the carrier (5) and the contact surfaces of the contact tongue (3) and of the pole plates (10, 11) are each parallel to the terminal plane of the relay.
6. A relay as claimed in claim 4, characterized in that the elongate sections (36, 36') of the carrier (35) and the pole faces of the contact tongue (35) and of the pole plates are arranged at right angles to the terminal plane of the relay.
7. A relay as claimed in one of claims 1 to 6, characterized in that, at its end which carries a terminal pin (22, 52), the carrier (5, 35) forms a flux transition component (21, 51, 51'), the major surface of which rests on the end of the coil body, and which is arranged parallel to the end wall of a ferromagnetic cap (23, 53).
EP81108176A 1981-01-13 1981-10-09 Polarised electromagnetic relay Expired EP0056085B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108176T ATE15568T1 (en) 1981-01-13 1981-10-09 POLARIZED ELECTROMAGNETIC RELAY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813100817 DE3100817A1 (en) 1981-01-13 1981-01-13 POLARIZED ELECTROMAGNETIC RELAY
DE3100817 1981-01-13

Publications (2)

Publication Number Publication Date
EP0056085A1 EP0056085A1 (en) 1982-07-21
EP0056085B1 true EP0056085B1 (en) 1985-09-11

Family

ID=6122531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108176A Expired EP0056085B1 (en) 1981-01-13 1981-10-09 Polarised electromagnetic relay

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US (1) US4403203A (en)
EP (1) EP0056085B1 (en)
JP (1) JPS57141838A (en)
AT (1) ATE15568T1 (en)
BR (1) BR8200135A (en)
DE (2) DE3100817A1 (en)
PT (1) PT74269B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338208A1 (en) * 1983-10-20 1985-05-02 Siemens AG, 1000 Berlin und 8000 München ELECTROMAGNETIC RELAY AND METHOD FOR THE PRODUCTION THEREOF
DE3338198A1 (en) * 1983-10-20 1985-05-02 Siemens AG, 1000 Berlin und 8000 München ELECTROMAGNETIC RELAY AND METHOD FOR THE PRODUCTION THEREOF
JPS6168452U (en) * 1984-10-09 1986-05-10
FR2616959B1 (en) * 1987-06-19 1989-08-25 Koehler Gerard PROTECTED MINIATURE BIPOLAR RELAY
US4788516A (en) * 1987-08-17 1988-11-29 Beta Mfg. Co. Enclosed electromagnetic relay
US6246306B1 (en) * 1999-02-04 2001-06-12 Klaus A. Gruner Electromagnetic relay with pressure spring
US9754747B1 (en) * 2016-04-25 2017-09-05 Song Chuan Precision Co., Ltd. Relay device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH514930A (en) * 1969-09-22 1971-10-31 Elesta Ag Elektronik Kleinschütz and process for making same
DE2723220C2 (en) * 1977-05-23 1979-08-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen Polarized miniature electromagnetic relay
JPS54111655A (en) * 1978-02-21 1979-09-01 Omron Tateisi Electronics Co Polar relay
AU529316B2 (en) * 1978-08-29 1983-06-02 Sds Relais Ag Electromagnetic relay

Also Published As

Publication number Publication date
ATE15568T1 (en) 1985-09-15
JPS57141838A (en) 1982-09-02
PT74269B (en) 1983-08-23
PT74269A (en) 1982-02-01
US4403203A (en) 1983-09-06
DE3172242D1 (en) 1985-10-17
DE3100817A1 (en) 1982-08-12
EP0056085A1 (en) 1982-07-21
BR8200135A (en) 1982-11-03

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