EP0096350B1 - Electromagnetic relay with rotating armature - Google Patents

Electromagnetic relay with rotating armature Download PDF

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Publication number
EP0096350B1
EP0096350B1 EP83105397A EP83105397A EP0096350B1 EP 0096350 B1 EP0096350 B1 EP 0096350B1 EP 83105397 A EP83105397 A EP 83105397A EP 83105397 A EP83105397 A EP 83105397A EP 0096350 B1 EP0096350 B1 EP 0096350B1
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EP
European Patent Office
Prior art keywords
armature
contact
basic body
relay
contact springs
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Expired
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EP83105397A
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German (de)
French (fr)
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EP0096350A2 (en
EP0096350A3 (en
Inventor
Rolf-Dieter Dipl.-Phys. Kimpel
Heinz Stadler
Alfred Ing. Heinzl (Grad.)
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Siemens AG
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Siemens AG
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Publication of EP0096350A3 publication Critical patent/EP0096350A3/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/548—Contact arrangements for miniaturised relays

Definitions

  • the invention relates to an electromagnetic rotary armature relay according to the first part of patent claim 1.
  • a rotary fan relay with a conventional design is known for example from DE-A-2 723 430.
  • this relay can work with or without permanent magnets, unpoled or poled, monostable or bistable.
  • Rotary armature relays of this type are generally relatively sensitive with low response power and, due to the central armature mounting, are also largely insensitive to shock.
  • the contacts are actuated via actuators which are connected directly or indirectly to the armature and act on movable contact springs, which in turn are anchored in the base body together with the fixed mating contact elements.
  • the friction of the armature in its mounting and in particular the friction between the slide and the movable contact springs should not be neglected, while on the other hand the movable contact springs, which are only moved about their clamping point, have practically no friction at their contact points.
  • EP-A-0 038 727 also describes a rotary armature relay according to the first part of claim 1, in which a certain friction is generated on the contact surfaces for self-cleaning, so that the disadvantages described above are partially eliminated.
  • the rotary armature relay described there is designed for the switching of high-voltage current, which is associated with a voluminous and relatively complicated design.
  • a U-shaped yoke carries two coils there, and on this yoke arrangement the rotary armature is mounted, which has an insulating sleeve and carries contact springs attached to the sides of this insulating sleeve.
  • the base body there consists of a vertically standing plate in which the mating contact elements are anchored.
  • the magnet system is attached to a transverse plate, the armature being mounted between this transverse plate and a further, removable part.
  • the armature is thus asymmetrically mounted with respect to the base body.
  • the contact arrangement is also not designed symmetrically. This results from the fact that the two bridge contact springs on the armature only protrude on one side and interact on one side with fixed counter-contact elements. This results in an asymmetrical load in the bearing, which also increases the friction and excitation power of the relay.
  • the known relay is only intended for use with bridge contacts; these are advantageous when used for higher voltages, but disadvantageous for switching very low currents because of the two contact resistance in the circuit.
  • the known construction is not readily applicable to small relays for switching small voltages.
  • FR-A-1 599 391 shows a device on a generator for protection against reverse polarity; this has a kind of armature, which itself also carries two coils and, depending on the current direction, occupies one or the other position.
  • Suggestions for the design of a rotary armature relay of the type mentioned at the outset cannot, however, be taken from this document, since neither switching of external circuits is provided nor is there any comparable structure of a base body and a coil with a core separated from the armature and shown on the base body becomes.
  • the object of the invention is to provide a rotary armature relay according to the first part of claim 1, in which, in a known manner, the contact springs are attached directly to the insulation of the armature, but which is advantageously further developed for use as a low-current relay, with friction losses during armature movement are largely avoided and the excitation power of the relay is kept small and the relay is formed with as few parts as possible.
  • the contact springs located on one longitudinal side of the armature are each connected in the area of the embedding to form a contact spring, which is fastened with its central section in the insulating material sheath and can be brought into contact with a mating contact element with its two free end sections is.
  • four movable contact springs are obtained which are insulated from one another and which, depending on the design of the mating contact elements on the base body, can form a break contact, a make contact or a changeover contact.
  • the contact springs fastened in the insulating material covering of the armature are connected to an associated connection element in the base body via a flexible conductor element, that is to say via a wire or a flexible sheet metal tab.
  • the armature which can be provided, for example, as a so-called H-armature with one or more permanent magnets, can be in a known manner be journal-supported on the base body, it being possible for bearing elements, that is to say journals or bearing bores, to be formed in the insulating material covering of the armature. To avoid bearing friction, the armature can, however, also be held on the base body via spring-deformable bearing elements. It is particularly advantageous if extensions are integrally formed as spring-deformable bearing elements on the contact springs fastened in the insulating material covering and anchored in the base body.
  • the contact springs can each be integrally formed with the bearing elements of the armature and the connecting pins anchored in the base body. As a result, the relay can be manufactured with very few parts.
  • Fig. 1 shows a relay with a base body 1, which may for example have the shape of a tub open at the bottom.
  • a base body In the base body there is housed an invisible coil, the rod-shaped core 2 of which, with its free ends, forms working air gaps with an armature 3 mounted on the base body.
  • the armature 3 consists of two elongated ferromagnetic rods 4 and 5, the ends 4a, 4b and 5a and 5b of which are each angled downward in a U-shape and with their free ends each enclosing a free end of the core 2.
  • the ferromagnetic rods 4 and 5 are held together by an insulating jacket 6.
  • a bearing bore 7 is formed in this insulating material sheathing, by means of which the armature is rotatably mounted on a pin 8 of the base body.
  • Two permanent magnets 9 and 10 are arranged between the ferromagnetic rods 4 and 5, through which the relay is polarized.
  • two contact springs 11 and 12 and 13 and 14 are embedded or fastened on both sides, which are carried along by each armature movement and accordingly optionally have contact with the mating contact elements 15, 16 anchored in the base body 1.
  • Each of these mating contact elements is provided on the underside of the base body 1 with a connecting pin 15a, 16a, etc.
  • connection elements 23 and 24 are anchored in the base body 1 with corresponding connection pins 23a and 24a for the movable contact springs 11 and 12 as well as corresponding, not visible connection elements for the contact springs 13 and 14.
  • Additional pins 25 and 26 are provided for the coil winding.
  • the movable contact springs 11 and 12 are connected to their connecting elements 23 and 24 via flexible strands 27 and 28.
  • the relay according to FIG. 1 can be closed, for example, with a cap 29, which is only indicated in the drawing.
  • a cap 29 can be tightly connected, glued or welded to the base body in a known manner.
  • Fig. 2 shows a schematic representation of a modified embodiment of the rotary armature relay according to the invention.
  • An armature 32 with an elongated ferromagnetic rod 33 is arranged on a base body 31, the two ends of which form working air gaps with respect to core pole plates 34 and 35, and 36 and 37 arranged in pairs.
  • These are part of a magnet system (not shown) with two U-shaped core elements which carry a coil and enclose a permanent magnet between them.
  • a magnet system is described for example in EP-A-0 077 017.
  • the armature 32 has an insulating material covering 38 in its middle part, in which movable contact springs 39, 40, 41 and 42 are fastened by insertion or embedding. These movable contact springs cooperate, for example, with mating contact elements 43, 44, 45 and 46 anchored in the base body 31, wherein, of course, changeover contacts could also be formed with further mating contact elements, not shown.
  • the armature is not journal-supported, but rather spring-supported via extensions 39a, 40a, 41a and 42a of the contact springs 39, 40, 41 and 42.
  • These extensions 39a, 40a, 41a 41a and 42a are anchored in the base body 31 and at the same time form with integrally formed connecting pins 39b, 40b etc. for the movable contact springs.
  • These extensions can also be meandering in order to enable better movement of the armature. This results in a friction-free anchor bearing, combined with the advantages of the first embodiment.

Description

Die Erfindung bezieht sich auf ein elektromagnetisches Drehankerrelais gemäss dem ersten Teil des Patentanspruches 1.The invention relates to an electromagnetic rotary armature relay according to the first part of patent claim 1.

Ein Drehfankerrelais mit herkömmlichem Aufbau ist beispielsweise aus der DE-A-2 723 430 bekannt. Dieses Relais kann je nach spezieller Ausgestaltung des Magnetkreises und des Ankers mit oder ohne Dauermagneten ungepolt oder gepolt, monostabil oder bistabil arbeiten. Derartige Drehankerrelais sind im allgemeinen relativ empfindlich bei geringer Ansprechleistung und wegen der mittigen Ankerlagerung auch weitgehend stossunempfindlich. Die Betätigung der Kontakte erfolgt bei den bekannten Relais dieser Art über Betätigungsorgane, die mittelbar oder unmittelbar mit dem Anker verbunden sind und auf bewegliche Kontaktfedern einwirken, welche ihrerseits zusammen mit den feststehenden Gegenkontaktelementen im Grundkörper verankert sind. Dabei ist die Reibung des Ankers in seiner Lagerung und insbesondere die Reibung zwischen dem Schieber und den beweglichen Kontaktfedern nicht zu vernachlässigen, während andererseits die lediglich um ihren Einspannpunkt bewegten beweglichen Kontaktfedern an ihren Kontaktstellen praktisch keine Reibung aufweisen.A rotary fan relay with a conventional design is known for example from DE-A-2 723 430. Depending on the special design of the magnetic circuit and the armature, this relay can work with or without permanent magnets, unpoled or poled, monostable or bistable. Rotary armature relays of this type are generally relatively sensitive with low response power and, due to the central armature mounting, are also largely insensitive to shock. In the known relays of this type, the contacts are actuated via actuators which are connected directly or indirectly to the armature and act on movable contact springs, which in turn are anchored in the base body together with the fixed mating contact elements. The friction of the armature in its mounting and in particular the friction between the slide and the movable contact springs should not be neglected, while on the other hand the movable contact springs, which are only moved about their clamping point, have practically no friction at their contact points.

Namentlich bei Schwachstromrelais mit sehr geringer Schaltleistung ist jedoch eine gewisse Reibung an den Kontaktstellen durchaus erwünscht, um einerseits Kontaktprellungen zu dämpfen und andererseits das Entstehen von Fremdschichten auf den Kontaktoberflächen zu vermeiden. Bei Starkstromrelais wird bei Gleichstrombelastung hierdurch eine Spitzenbildung weitgehend verhindert.In the case of low-current relays with a very low switching capacity, in particular, a certain amount of friction at the contact points is desirable, on the one hand to dampen contact bruises and on the other hand to prevent the formation of foreign layers on the contact surfaces. In the case of heavy current relays, peak formation is largely prevented in this way when there is a direct current load.

In der EP-A-0 038 727 ist weiterhin bereits ein Drehankerrelais nach dem ersten Teil des Anspruchs 1 beschrieben, bei dem auf den Kontaktflächen eine gewisse Reibung zur Selbstreinigung erzeugt wird, so dass die oben beschriebenen Nachteile teilweise beseitigt sind. Das dort beschriebene Drehankerrelais ist allerdings vom Gesamtaufbau her für das Schalten von Starkstrom ausgelegt, womit eine voluminöse und relativ komplizierte Gestaltung einhergeht. Ein U-förmiges Joch trägt dort zwei Spulen, und auf dieser Jochanordnung ist der Drehanker gelagert, der eine Isolierstoffumhüllung besitzt und an den Seiten dieser Isolierstoffumhüllung befestigte Kontaktfedern trägt. Der Grundkörper besteht dort aus einer senkrecht stehenden Platte, in welcher die Gegenkontaktelemente verankert sind. Das Magnetsystem ist an einer quer liegenden Platte befestigt, wobei der Anker zwischen dieser Querplatte und einem weiteren, abnehmbaren Teil gelagert ist. Somit ist der Anker unsymmetrisch gegenüber dem Grundkörper gelagert. Auch die Kontaktanordnung ist nicht symmetrisch ausgelegt. Das ergibt sich schon daraus, dass die beiden Brückenkontaktfedern am Anker nur nach einer Seite vorstehen und an einer Seite mit feststehenden Gegenkontaktelementen zusammenwirken. Damit ergibt sich eine unsymmetrische Belastung im Lager, somit auch eine erhöhte Reibung und Erregerleistung des Relais.EP-A-0 038 727 also describes a rotary armature relay according to the first part of claim 1, in which a certain friction is generated on the contact surfaces for self-cleaning, so that the disadvantages described above are partially eliminated. The rotary armature relay described there, however, is designed for the switching of high-voltage current, which is associated with a voluminous and relatively complicated design. A U-shaped yoke carries two coils there, and on this yoke arrangement the rotary armature is mounted, which has an insulating sleeve and carries contact springs attached to the sides of this insulating sleeve. The base body there consists of a vertically standing plate in which the mating contact elements are anchored. The magnet system is attached to a transverse plate, the armature being mounted between this transverse plate and a further, removable part. The armature is thus asymmetrically mounted with respect to the base body. The contact arrangement is also not designed symmetrically. This results from the fact that the two bridge contact springs on the armature only protrude on one side and interact on one side with fixed counter-contact elements. This results in an asymmetrical load in the bearing, which also increases the friction and excitation power of the relay.

Das bekannte Relais ist lediglich zur Verwendung mit Brückenkontakten gedacht; diese sind beim Einsatz für höhere Spannungen vorteilhaft, für das Schalten von sehr geringen Strömen jedoch wegen des zweimaligen Kontaktwiderstandes im Schaltkreis von Nachteil. Somit ist die bekannte Konstruktion nicht ohne weiteres für kleine Relais zum Schalten von kleinen Spannungen anwendbar.The known relay is only intended for use with bridge contacts; these are advantageous when used for higher voltages, but disadvantageous for switching very low currents because of the two contact resistance in the circuit. Thus, the known construction is not readily applicable to small relays for switching small voltages.

Die FR-A-1 599 391 zeigt eine Vorrichtung an einem Generator zum Schutz gegen Falschpolung; diese besitzt eine Art Anker, der selbst auch zwei Spulen trägt und je nach Stromrichtung die eine oder die andere Stellung einnimmt. Anregungen für die Gestaltung eines Drehankerrelais der eingangs genannten Art können aus dieser Schrift jedoch nicht entnommen werden, da dort weder das Schalten von externen Stromkreisen vorgesehen ist noch überhaupt ein vergleichbarer Aufbau eines Grundkörpers und einer vom Anker getrennten, auf dem Grundkörper angeordneten Spule mit Kern gezeigt wird.FR-A-1 599 391 shows a device on a generator for protection against reverse polarity; this has a kind of armature, which itself also carries two coils and, depending on the current direction, occupies one or the other position. Suggestions for the design of a rotary armature relay of the type mentioned at the outset cannot, however, be taken from this document, since neither switching of external circuits is provided nor is there any comparable structure of a base body and a coil with a core separated from the armature and shown on the base body becomes.

Aus der US-A-3 717 829 ist ferner ein Relais bekannt, bei dem ein Anker über Federn gelagert ist. Allerdings handelt es sich dort nicht um einen Drehanker, sondern um eine gebräuchliche Federlagerung von Flachankern.From US-A-3 717 829 a relay is also known in which an armature is supported by springs. However, it is not a rotating anchor, but a common spring mounting of flat anchors.

Aufgabe der Erfindung ist es, ein Drehankerrelais gemäss dem ersten Teil des Patentanspruchs 1 zu schaffen, bei dem in bekannter Weise die Kontaktfedern unmittelbar an der Isolierung des Ankers befestigt sind, das aber für den Einsatz als Schwachstromrelais vorteilhaft weitergebildet ist, wobei Reibverluste bei der Ankerbewegung weitgehend vermieden werden und die Erregerleistung des Relais kleingehalten wird und wobei das Relais auch mit möglichst wenigen Teilen gebildet wird.The object of the invention is to provide a rotary armature relay according to the first part of claim 1, in which, in a known manner, the contact springs are attached directly to the insulation of the armature, but which is advantageously further developed for use as a low-current relay, with friction losses during armature movement are largely avoided and the excitation power of the relay is kept small and the relay is formed with as few parts as possible.

Diese Aufgabe wird erfindungsgemäss mit den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöst.This object is achieved according to the invention with the characterizing features of patent claim 1.

In einer vorteilhaften Ausführungsform der Erfindung sind die jeweils an einer Längsseite des Ankers befindlichen Kontaktfedern im Bereich der Einbettung jeweils zusammenhängend zu einer Kontaktfeder verbunden, die mit ihrem Mittelabschnitt in der Isolierstoffumhüllung befestigt ist und mit ihren beiden freien Endabschnitten jeweils wahlweise in Kontakt mit einem Gegenkontaktelement bringbar ist. Ohne diese Verbindung erhält man vier voneinander isolierte bewegliche Kontaktfedern, welche je nach Ausbildung der Gegenkontaktelemente auf dem Grundkörper einen Öffner-, einen Schliesser- oder Umschaltkontakt bilden können. In jedem Fall sind die in der Isolierstoffumhüllung des Ankers befestigten Kontaktfedern über ein flexibles Leiterelement, also über eine Litze oder eine flexible Blechfahne, mit einem zugehörigen Anschlusselement im Grundkörper verbunden.In an advantageous embodiment of the invention, the contact springs located on one longitudinal side of the armature are each connected in the area of the embedding to form a contact spring, which is fastened with its central section in the insulating material sheath and can be brought into contact with a mating contact element with its two free end sections is. Without this connection, four movable contact springs are obtained which are insulated from one another and which, depending on the design of the mating contact elements on the base body, can form a break contact, a make contact or a changeover contact. In any case, the contact springs fastened in the insulating material covering of the armature are connected to an associated connection element in the base body via a flexible conductor element, that is to say via a wire or a flexible sheet metal tab.

Der Anker, der beispielsweise als sogenannter H-Anker mit einem oder mehreren Dauermagneten versehen sein kann, kann in bekannter Weise auf dem Grundkörper zapfengelagert sein, wobei Lagerelemente, also Lagerzapfen oder Lagerbohrungen, in der Isolierstoffumhüllung des Ankers eingeformt sein können. Zur Vermeidung der Lagerreibung kann der Anker jedoch auch über federnd deformierbare Lagerelemente auf dem Grundkörper gehalten sein. Dabei ist es besonders vorteilhaft, wenn als federnd deformierbare Lagerelemente an den in der Isolierstoffumhüllung befestigten Kontaktfedern Fortsätze angeformt und im Grundkörper verankert sind. Die Kontaktfedern können dabei mit den Lagerelementen des Ankers und den im Grundkörper verankerten Anschlussstiften jeweils einstückig ausgebildet sein. Dadurch ist das Relais mit besonders wenigen Teilen zu fertigen.The armature, which can be provided, for example, as a so-called H-armature with one or more permanent magnets, can be in a known manner be journal-supported on the base body, it being possible for bearing elements, that is to say journals or bearing bores, to be formed in the insulating material covering of the armature. To avoid bearing friction, the armature can, however, also be held on the base body via spring-deformable bearing elements. It is particularly advantageous if extensions are integrally formed as spring-deformable bearing elements on the contact springs fastened in the insulating material covering and anchored in the base body. The contact springs can each be integrally formed with the bearing elements of the armature and the connecting pins anchored in the base body. As a result, the relay can be manufactured with very few parts.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Es zeigt

  • Fig. 1 ein erfindungsgemäss gestaltetes polarisiertes Drehankerrelais mit Zapfenlagerung,
  • Fig. 2 einen über Federn auf einem Grundkörper gelagerten Anker in schematischer Darstellung.
An embodiment of the invention is explained below with reference to the drawing. It shows
  • 1 shows a polarized rotary armature relay with a journal bearing designed according to the invention,
  • Fig. 2 shows a spring mounted on a base armature in a schematic representation.

Die Fig. 1 zeigt ein Relais mit einem Grundkörper 1, der beispielsweise die Form einer nach unten offenen Wanne besitzen kann. In dem Grundkörper ist eine nicht sichtbare Spule untergebracht, deren stabförmiger Kern 2 jeweils mit seinen freien Enden Arbeitsluftspalte mit einem auf dem Grundkörper gelagertan Anker 3 bildet.Fig. 1 shows a relay with a base body 1, which may for example have the shape of a tub open at the bottom. In the base body there is housed an invisible coil, the rod-shaped core 2 of which, with its free ends, forms working air gaps with an armature 3 mounted on the base body.

Der Anker 3 besteht aus zwei langgestreckten ferromagnetischen Stäben 4 und 5, deren Enden 4a, 4b sowie 5a und 5b jeweils U-förmig nach unten abgewinkelt sind und mit ihren freien Enden jeweils ein freies Ende des Kerns 2 einschliessen. Die ferromagnetischen Stäbe 4 und 5 sind durch eine Isolierstoffumhüllung 6 zusammengehalten. In diese Isolierstoffumhüllung ist eine Lagerbohrung 7 eingeformt, mittels derer der Anker auf einem Zapfen 8 des Grundkörpers drehbar gelagert ist. Zwischen den ferromagnetischen Stäben 4 und 5 sind zwei Dauermagnete 9 und 10 angeordnet, durch welche das Relais eine Polarisierung erfährt.The armature 3 consists of two elongated ferromagnetic rods 4 and 5, the ends 4a, 4b and 5a and 5b of which are each angled downward in a U-shape and with their free ends each enclosing a free end of the core 2. The ferromagnetic rods 4 and 5 are held together by an insulating jacket 6. A bearing bore 7 is formed in this insulating material sheathing, by means of which the armature is rotatably mounted on a pin 8 of the base body. Two permanent magnets 9 and 10 are arranged between the ferromagnetic rods 4 and 5, through which the relay is polarized.

In der Isolierstoffumhüllung 6 des Ankers sind zu beiden Seiten jeweils zwei Kontaktfedern 11 und 12 sowie 13 und 14 (nicht sichtbar) eingebettet oder sonstwie befestigt, welche durch jede Ankerbewegung mitgenommen werden und entsprechend wahlweise Kontakt mit den im Grundkörper 1 verankerten Gegenkontaktelementen 15, 16, 17, 18, 19, 20 sowie 21 und 22 geben. Jedes dieser Gegenkontaktelemente ist an der Unterseite des Grundkörpers 1 mit einem Anschlussstift 15a, 16a usw. versehen. Ausserdem sind im Grundkörper 1 Anschlusselemente 23 und 24 mit entsprechenden Anschlussstiften 23a und 24a für die beweglichen Kontaktfedern 11 und 12 sowie entsprechende, nicht sichtbare Anschlusselemente für die Kontaktfedern 13 und 14 verankert. Weitere Anschlussstifte 25 und 26 sind für die Spulenwicklung vorgesehen. Die beweglichen Kontaktfedern 11 und 12 sind über flexible Litzen 27 und 28 mit ihren Anschlusselementen 23 bzw. 24 verbunden.In the insulating material covering 6 of the armature, two contact springs 11 and 12 and 13 and 14 (not visible) are embedded or fastened on both sides, which are carried along by each armature movement and accordingly optionally have contact with the mating contact elements 15, 16 anchored in the base body 1. Give 17, 18, 19, 20 and 21 and 22. Each of these mating contact elements is provided on the underside of the base body 1 with a connecting pin 15a, 16a, etc. In addition, connection elements 23 and 24 are anchored in the base body 1 with corresponding connection pins 23a and 24a for the movable contact springs 11 and 12 as well as corresponding, not visible connection elements for the contact springs 13 and 14. Additional pins 25 and 26 are provided for the coil winding. The movable contact springs 11 and 12 are connected to their connecting elements 23 and 24 via flexible strands 27 and 28.

Bei Betätigung des Ankers 3 werden die mit ihm verbundenen Kontaktfedern 11, 12, 13 und 14 jeweils um die durch den Zapfen 8 gehende Drehachse bewegt, wobei ihre kontaktgebenden Enden also nicht lediglich eine Kreisbewegung um ihren Einspannpunkt, sondern eine Kreisbewegung um die Ankerdrehachse ausführen. Dadurch ergibt sich an den Kontaktstellen eine vergleichsweise grosse Reibung, durch die Kontaktprellungen vermieden und evtl. auftretende Fremdschichten auf den Kontaktoberflächen abgerieben werden. Andererseits tritt keine Reibung an einem Betätigungsorgan auf; da diese Betätigungsorgane normalerweise aus Isolierstoff bestehen, bedeutet ein derartiger Abrieb immer eine Gefahr für die Kontaktoberflächen, die somit hier vermieden ist. Durch die feste Einspannung aller beweglichen Kontaktfedern im Anker ergibt sich auch eine Zwangsführung, d.h., beim Verschweissen eines Kontaktes bleiben durch die starre Kopplung auch alle anderen Kontakte unverändert geschlossen.When the armature 3 is actuated, the contact springs 11, 12, 13 and 14 connected to it are each moved about the axis of rotation passing through the pin 8, their contact-making ends thus not only executing a circular movement about their clamping point, but rather a circular movement about the armature rotation axis. This results in a comparatively large friction at the contact points, by means of which contact bruises are avoided and any foreign layers that may occur are rubbed off on the contact surfaces. On the other hand, there is no friction on an actuator; since these actuators normally consist of insulating material, such abrasion always means a danger to the contact surfaces, which is thus avoided here. The fixed clamping of all movable contact springs in the armature also results in positive guidance, i.e. when a contact is welded, all other contacts remain closed unchanged due to the rigid coupling.

Das Relais nach Fig. 1 kann beispielsweise mit einer nur andeutungsweise dargestellten Kappe 29 verschlossen werden. Eine solche Kappe kann in bekannter Weise mit dem Grundkörper dicht verbunden, verklebt oder verschweisst werden.The relay according to FIG. 1 can be closed, for example, with a cap 29, which is only indicated in the drawing. Such a cap can be tightly connected, glued or welded to the base body in a known manner.

Fig. 2 zeigt in schematischer Darstellung eine abgewandelte Ausführungsform des erfindungsgemässen Drehankerrelais. Auf einem Grundkörper 31 ist ein Anker 32 mit einem langgestreckten ferromagnetischen Stab 33 angeordnet, der mit seinen beiden Enden jeweils Arbeitsluftspalte gegenüber paarweise angeordneten Kernpolblechen 34 und 35 sowie 36 und 37 bildet. Diese sind Teil eines weiter nicht dargestellten Magnetsystems mit zwei U-förmigen Kernelementen, die eine Spule tragen und zwischen sich einen Dauermagneten einschliessen. Ein derartiges Magnetsystem ist beispielsweise in der EP-A-0 077 017 beschrieben.Fig. 2 shows a schematic representation of a modified embodiment of the rotary armature relay according to the invention. An armature 32 with an elongated ferromagnetic rod 33 is arranged on a base body 31, the two ends of which form working air gaps with respect to core pole plates 34 and 35, and 36 and 37 arranged in pairs. These are part of a magnet system (not shown) with two U-shaped core elements which carry a coil and enclose a permanent magnet between them. Such a magnet system is described for example in EP-A-0 077 017.

Der Anker 32 besitzt in seinem Mittelteil eine Isolierstoffumhüllung 38, in welcher jeweils bewegliche Kontaktfedern 39, 40, 41 und 42 durch Einstecken oder Einbetten befestigt sind. Diese beweglichen Kontaktfedern wirken beispielsweise mit im Grundkörper 31 verankerten Gegenkontaktelementen 43, 44, 45 und 46 zusammen, wobei natürlich auch mit nicht dargestellten weiteren Gegenkontaktelementen Umschaltkontakte gebildet werden könnten.The armature 32 has an insulating material covering 38 in its middle part, in which movable contact springs 39, 40, 41 and 42 are fastened by insertion or embedding. These movable contact springs cooperate, for example, with mating contact elements 43, 44, 45 and 46 anchored in the base body 31, wherein, of course, changeover contacts could also be formed with further mating contact elements, not shown.

Beim Ausführungsbeispiel nach Fig. 2 ist allerdings der Anker nicht zapfengelagert, sondern über Fortsätze 39a, 40a, 41a und 42a der Kontaktfedern 39, 40, 41 und 42 federgelagert. Diese Fortsätze 39a, 40a, 41a 41a und 42a sind im Grundkörper 31 verankert und bilden gleichzeitig mit angeformte Anschlussstifte 39b, 40b usw. für die beweglichen Kontaktfedern. Diese Fortsätze können auch mäanderförmig ausgebildet sein, um eine bessere Beweglichkeit des Ankers zu ermöglichen. Dadurch ergibt sich eine reibungsfreie Ankerlagerung, verbunden mit den Vorteilen des ersten Ausführungsbeispiels.In the exemplary embodiment according to FIG. 2, however, the armature is not journal-supported, but rather spring-supported via extensions 39a, 40a, 41a and 42a of the contact springs 39, 40, 41 and 42. These extensions 39a, 40a, 41a 41a and 42a are anchored in the base body 31 and at the same time form with integrally formed connecting pins 39b, 40b etc. for the movable contact springs. These extensions can also be meandering in order to enable better movement of the armature. This results in a friction-free anchor bearing, combined with the advantages of the first embodiment.

Claims (6)

1. An electromagnetic relay
- comprising a basic body (1; 31) which consists of insulating material and which bears an exciting coil with a coil core having free pole ends (2; 34, 35, 36, 37)
- comprising counter-contact elements (15 to 22; 43 to 46) secured in the basic body (1; 31) with terminal pins (15a to 18a; 39b, 40b),
- comprising a pivot-mounted armature (3; 32), which is provided with at least one elongated, ferromagnetic rod (4, 5; 33) and at its free ends forms operating air gaps with the pole ends of the coil core (2; 34, 35, 36, 37) and which in its central region is provided with an insulating casing (6; 38) which contains bearing elements and
- comprising contact springs (11 to 14; 39 to 42) which on both longitudinal sides of the armature are attached to the insulating casing (6; 38) in parallel to the ferromagnetic rod (33) or ferromagnetic rods (4, 5) and which co-operate with the counter-contact elements,

characterised in that
the terminal pins (15a to 18a; 39b, 40b) of the counter-contact elements (15 to 18; 43 to 46) and of additional terminal elements (23, 24; 39b, 40b), secured in the basic body (1; 31), for the contact springs (11 to 14; 39 to 42) emerge from the underneath of the basic body (1; 31), whereas the armature (3; 32) is mounted approximately centrally on the upperside of the basic body,
that two respective contact springs (11, 12; 13, 14; 39, 40; 41, 42) are arranged on each longitudinal side of the armature (3; 32) and extend in opposite directions away from the fixing point in the insulating sleeve approximately to the respective free end of the armature (3; 32) and that each contact spring (11 to 14; 39 to 42) is connected via a flexible conductor element (27, 28; 39a to 42a) to an associated terminal element (23, 24; 39b to 42b).
2. A relay as claimed in Claim 1, characterised in that the contact springs which are each arranged along a longitudinal side of the armature are connected in the region of the embedding to form one contact spring, the central section of which is attached in the insulating casing and the two free end sections of which can each be optionally brought into contact with a counter-contact element.
3. A relay as claimed in one of the Claims 1 or 2, characterised in that the armature (3) is pivot-mounted on the basic body (1) by means of bearing elements (7) arranged on the insulating casing (6).
4. A relay as claimed in one of the Claims 1 to 3, characterised in that the armature (32) is mounted on the basic body (31) via resiliently deformable bearing elements (39a, 40a, 41a, 42a).
5. A relay as claimed in Claim 4, characterised in that as resiliently deformable bearing elements projections (39a, 40a, 41a, 42a) are moulded to the contact springs (39, 40, 41, 42), which contact springs are secured in the insulating casing (32), and are attached in the basic body.
6. A relay as claimed in Claim 5, characterised in that the contact springs (39, 40, 41, 42) in each case form an integral component with the bearing elements (39a, 40a, 41a, 42a) and the terminal pins (39b, 40b,...) which are secured in the basic body (31).
EP83105397A 1982-06-03 1983-05-31 Electromagnetic relay with rotating armature Expired EP0096350B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823220985 DE3220985A1 (en) 1982-06-03 1982-06-03 ELECTROMAGNETIC SWIVEL RELAY
DE3220985 1982-06-03

Publications (3)

Publication Number Publication Date
EP0096350A2 EP0096350A2 (en) 1983-12-21
EP0096350A3 EP0096350A3 (en) 1986-12-30
EP0096350B1 true EP0096350B1 (en) 1988-11-17

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ID=6165244

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Application Number Title Priority Date Filing Date
EP83105397A Expired EP0096350B1 (en) 1982-06-03 1983-05-31 Electromagnetic relay with rotating armature

Country Status (4)

Country Link
US (1) US4539540A (en)
EP (1) EP0096350B1 (en)
JP (1) JPS58216321A (en)
DE (2) DE3220985A1 (en)

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DE3436619A1 (en) * 1983-10-05 1985-05-09 Omron Tateisi Electronics Co., Kyoto Electromagnetic relay
DE3425889C1 (en) * 1984-07-13 1986-02-13 SDS-Relais AG, 8024 Deisenhofen Safety relay
DE3585056D1 (en) * 1984-07-13 1992-02-13 Euro Matsushita Electric Works SAFETY RELAY.
DE3520773C1 (en) * 1985-05-29 1989-07-20 SDS-Relais AG, 8024 Deisenhofen Electromagnetic relay
US4771975A (en) * 1986-09-11 1988-09-20 Semec, Inc. Vehicle seat position adjuster
JP4424260B2 (en) * 2005-06-07 2010-03-03 オムロン株式会社 Electromagnetic relay
US8514040B2 (en) * 2011-02-11 2013-08-20 Clodi, L.L.C. Bi-stable electromagnetic relay with x-drive motor

Citations (1)

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EP0089670A2 (en) * 1982-03-23 1983-09-28 Siemens Aktiengesellschaft Electromagnetic relay

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FR1599391A (en) * 1968-12-11 1970-07-15
US3717829A (en) * 1971-08-27 1973-02-20 Allied Control Co Electromagnetic relay
DE2454967C3 (en) * 1974-05-15 1981-12-24 Hans 8024 Deisenhofen Sauer Poled electromagnetic relay
JPS6042572B2 (en) * 1977-05-13 1985-09-24 松下電工株式会社 polarized relay
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JPS5941593Y2 (en) * 1979-09-21 1984-11-30 高周波熱錬株式会社 Fireproof tube of induction heating coil for billet heater
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Also Published As

Publication number Publication date
US4539540A (en) 1985-09-03
DE3220985A1 (en) 1983-12-08
DE3378507D1 (en) 1988-12-22
EP0096350A2 (en) 1983-12-21
EP0096350A3 (en) 1986-12-30
JPS58216321A (en) 1983-12-16

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