EP0133582B1 - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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Publication number
EP0133582B1
EP0133582B1 EP84109509A EP84109509A EP0133582B1 EP 0133582 B1 EP0133582 B1 EP 0133582B1 EP 84109509 A EP84109509 A EP 84109509A EP 84109509 A EP84109509 A EP 84109509A EP 0133582 B1 EP0133582 B1 EP 0133582B1
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EP
European Patent Office
Prior art keywords
armature
contact
yoke
relay
core yoke
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84109509A
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German (de)
French (fr)
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EP0133582A2 (en
EP0133582A3 (en
Inventor
Helmut Dipl.-Ing. Schedele
Rolf-Dieter Dipl.-Phys. Kimpel
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Siemens AG
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Siemens AG
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Publication date
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Priority to AT84109509T priority Critical patent/ATE26362T1/en
Publication of EP0133582A2 publication Critical patent/EP0133582A2/en
Publication of EP0133582A3 publication Critical patent/EP0133582A3/en
Application granted granted Critical
Publication of EP0133582B1 publication Critical patent/EP0133582B1/en
Expired legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/54Contact arrangements
    • H01H50/548Contact arrangements for miniaturised relays
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/16Magnetic circuit arrangements

Definitions

  • the invention relates to an electromagnetic relay with a coil-carrying coil body or base body, a flat core yoke with its central portion embedded in the base body, which has a yoke leg running transversely to the coil axis at both ends outside the coil winding, with one on the core yoke mounted U-shaped flat armature, which is encompassing the coil winding with its central part parallel to the coil axis and with its two side legs essentially perpendicular to the coil axis.
  • Such a relay is known for example from DE-A-2 926 142.
  • a bow-shaped armature is supported with both ends on a bow-shaped core so that it executes pivoting movements approximately around the coil axis. So that the armature in the fallen state does not short-circuit the yoke in the system there, additional non-magnetic bearing elements must be provided in the bearing area.
  • this known relay contains a relatively large number of individual parts in order to transmit the armature movement to the contact spring via an actuating element. However, this means that both the volume and the manufacturing outlay for this known relay are still relatively high.
  • the object of the invention is to construct a relay with a simple but effective magnet system and with a contact unit in such a way that a compact structure and thus a small volume is achieved with a few simple parts, with both having the same basic structure due to slight modification of individual parts an upright installation as well as a flat installation of the rectangular relay is possible.
  • this object is achieved in a relay of the type mentioned at the outset in that the armature with its first side leg is pivotally mounted on the first yoke leg about an axis perpendicular to the coil axis and forms a working air gap with its second side leg relative to the second yoke leg
  • An anchor middle part is attached to a contact spring which, with its free end carrying a contact piece, engages around the armature and the core yoke in a U-shape and interacts on the side of the core yoke opposite the armature with at least one mating contact plate anchored in the coil former and provided with a connecting lug.
  • the inventive design of the core yoke and the armature and their arrangement relative to one another results in a very large coupling surface in relation to the overall size of the relay between armature and core, as a result of which high contact forces can be achieved with low excitation of the response.
  • the number of individual parts required is kept low by the direct connection of the contact spring to the armature, the relative actuation of the contacting end in two directions being made possible by the direct actuation of the contact spring on the armature and by its U-shaped bend toward the contact point that the friction achieved with this enables good self-cleaning of the contact surfaces even at very low switching currents.
  • the opposite arrangement of armature and contact unit on both sides of the core yoke is also particularly favorable. In this way, the free spaces specified by the coil winding and the core yoke are optimally used.
  • the contact spring also serves as a bearing spring for the armature and is connected to both the armature and the core yoke for this purpose.
  • This connection can be made, for example, by riveting or welding.
  • the contact spring has an integrally formed connecting lug in an extension of the connection point with the core yoke.
  • a connecting lug may be provided which is integrally formed on the core yoke and possibly reduced in cross section by embossing.
  • it advantageously has molded-on and cut-free spring legs, by means of which it clasps the first yoke leg and the first side leg of the armature.
  • the contact spring can also have a stop tab to absorb bounce when the armature falls off.
  • the contact spring extends obliquely to the direction of movement of the second side leg of the armature in the section that laterally encircles the armature.
  • the relay has two mating contact plates on the side of the core yoke opposite the armature, which are fastened in parallel to one another and to the core yoke in grooves in the base body, the contact-bound end of the contact spring being movable between their contact surfaces.
  • the mating contact plates extend between their fastening grooves essentially over the entire coil length, as a result of which not only a very precise fixing of the mating contact plates, but also good heat dissipation is achieved.
  • the mating contact plates with their connecting lugs either run in a straight line or a right angle is formed between the mating contact plate and the connecting lug.
  • the relay can thus be manufactured either for upright or for flat installation.
  • the relay shown in Figs. 1 to 6 has a so-called standing embodiment, i.e. the connection pins are led out of the housing in such a way that the rectangular relay is upright in its installed position and has a small footprint.
  • the relay has a coil body or base body 1 made of insulating material, which is obtained by extrusion coating a core yoke 2.
  • This core yoke 2 has a central section 2a running inside the coil winding 3 and two yoke legs 2b and 2c running outside the coil winding transversely to the coil axis.
  • the yoke leg 2b is kept approximately shorter in order to leave space for coil connecting pins 4 anchored in the base body.
  • the core yoke is designed as a flat cut part and is therefore easy and inexpensive to manufacture. It is encapsulated with plastic to form the base body, which base body can be made very stable and true to size despite the small wall thicknesses due to the injected core yoke made of metal. With these small wall thicknesses of the base body, a large winding space can be created for a given volume, with which the temperature-increasing power consumption can be kept low with a given excitation.
  • a U-shaped armature 5 is arranged on the core yoke, which has a central part 5a and side legs 5b and 5c of different lengths designed in accordance with the two yoke legs.
  • the anchor is also cut from a flat sheet.
  • the armature 5 is mounted with its first side leg 5b on the first yoke leg 2b in such a way that it can perform a pivoting movement about a pivot axis perpendicular to the coil axis and forms a working air gap with its second side leg 5c with respect to the second yoke leg 2c.
  • the yoke leg 2c and the armature leg 5c extend over the entire relay width, which results in a large pole area. As a result, a relatively high response sensitivity can be achieved even with a large anchor stroke.
  • a contact spring 6 is fastened with a wart rivet 7, which also serves as a bearing spring for the armature.
  • the contact and bearing spring 6 encloses the first armature leg 5b and the first yoke leg 2b with its partially cut-out and arcuate spring section 6a and is fastened to the yoke leg 2b by welding.
  • the restoring force of the armature is set by the prestressing of this spring section 6a.
  • the spring force tolerances can be switched off by aligning the parts before welding onto the yoke leg 2b.
  • a connecting pin 8 is also attached by welding, which is bent within the housing and guided outwards in the desired grid.
  • the contact spring 6 is split into two contact-making ends 6c and 6d, each of which carries a contact piece 6e.
  • the contact spring forms an additionally formed impact tooth 20 which dampens the rebound of the armature when the excitation is switched off and thus reduces contact bruises of the break contact.
  • the counter-contact plates 9 and 10 are in turn designed as flat cut parts, provided with molded or welded-on connection lugs 11 and 12 and inserted into corresponding grooves 13 and 14 of the base body 1 and held there by an interference fit. Due to the relatively large area of the contact plates 9 and 10, they are able to let the heat generated in the contact circuit flow away and radiate.
  • the counter contact plates 9 and 10 are easy to manufacture as flat cut parts; they are only plated with precious metal in the contact area.
  • the relay is inserted into a housing which is formed by a protective cap 1 and a base 16.
  • the housing is sealed by an additionally attached fleece 17 in the base area, which is impregnated with hardenable synthetic resin.
  • a getter chamber 18 is also formed, in which a getter pill 19 can be clamped.
  • FIG. 7 shows a slightly modified embodiment in a representation corresponding to FIG. 5.
  • the core yoke 2 is in this case provided with an integrally formed and embossed extension 2d, which serves as a connecting pin for the contact spring 6.
  • the relay is constructed similarly to that already described with reference to FIGS. 1 to 6.
  • the relay shown in FIGS. 8 to 12 has essentially the same basic construction as the one described above, but it is designed, in particular, by modifying the connecting pins in such a way that it is suitable for horizontal installation with a low overall height.
  • This relay has a base body 21 with an embedded core yoke 22, which carries a winding 23 and connecting pins 24.
  • the core yoke has two yoke legs 22b and 22c, a U-shaped armature 25 with a first side leg 25b being mounted on the yoke leg 22b and with its second side leg 25c forming a working air gap with respect to the yoke leg 22c.
  • a contact and bearing spring 26 is fastened by a rivet 27 on the middle section 25a of the armature 25, it engages around the armature leg 25b and the yoke leg 22b with its arcuate spring section 26a and is fastened with welding points 28 to the yoke leg 22b.
  • An additional molded-on spring tab 26f which engages on the underside of the yoke leg 2b, serves for pre-fixing.
  • a connecting pin 26g is also formed on the contact spring 26.
  • the contact spring engages with a U-shaped section 26b the armature and the core yoke and is split at its free end into two contacting end sections 26c and 26d, each of which carries a contact piece 26e. With these, it can be switched between the two mating contact plates 29 and 30. These are provided with connection lugs 31 and 32 bent at right angles and inserted for fastening in grooves 33 and 34 of the base body 21.
  • a protective cap 35 with a base 36 serves as the housing, the edge groove or the openings for the connecting pins being sealed with casting compound 37.
  • a chamber 38 for receiving a getter pill 39 is also provided in the base body.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Surgical Instruments (AREA)
  • Valve Device For Special Equipments (AREA)
  • Cookers (AREA)

Abstract

An electromagnetic relay is provided which has a core yoke embedded in a base body, the core yoke comprising a yoke leg at both coil ends which proceed perpendicular to the coil axis. A U-shaped armature has its first lateral leg seated on the first yoke leg and has its second lateral leg forming an operating air gap relative to the second yoke leg. A contact and bearing spring is secured to the armature, the contacting end of the contact and bearing spring laterally embracing the armature and the core yoke and interacting at that side of the core yoke which lies opposite the armature with at least one cooperating contact plate.

Description

Die Erfindung bezieht sich auf ein elektromagnetisches Relais mit einem eine Wicklung tragenden Spulenkörper bzw. Grundkörper, einem mit seinem Mittelabschnitt in den Grundkörper eingebetteten flachen Kernjoch, das an beiden Enden ausserhalb der Spulenwicklung jeweils einen quer zur Spulenachse verlaufenden Jochschenkel aufweist, mit einem auf dem Kernjoch gelagerten U-förmigen flachen Anker, der die Spulenwicklung umgreifend mit seinem Mittelteil parallel zur Spulenachse und mit seinen beiden Seitenschenkeln im wesentlichen senkrecht zur Spulenachse steht.The invention relates to an electromagnetic relay with a coil-carrying coil body or base body, a flat core yoke with its central portion embedded in the base body, which has a yoke leg running transversely to the coil axis at both ends outside the coil winding, with one on the core yoke mounted U-shaped flat armature, which is encompassing the coil winding with its central part parallel to the coil axis and with its two side legs essentially perpendicular to the coil axis.

Ein derartiges Relais ist beispielsweise aus der DE-A-2 926 142 bekannt. Dort ist ein bügelförmiger Anker mit beiden Enden auf einem bügelförmigen Kern so gelagert, dass er Schwenkbewegungen annähernd um die Spulenachse ausführt. Damit bei dem dortigen System der Anker in abgefallenem Zustand das Joch nicht kurzschliesst, müssen im Lagerbereich zusätzliche nichtmagnetische Lagerelemente vorgesehen werden. Ausserdem enthält dieses bekannte Relais noch verhältnismässig viele Einzelteile, um die Ankerbewegung über ein Betätigungsorgan auf die Kontaktfeder zu übertragen. Damit sind aber sowohl das Volumen als auch der Fertigungsaufwand für dieses bekannte Relais noch verhältnismässig hoch.Such a relay is known for example from DE-A-2 926 142. There, a bow-shaped armature is supported with both ends on a bow-shaped core so that it executes pivoting movements approximately around the coil axis. So that the armature in the fallen state does not short-circuit the yoke in the system there, additional non-magnetic bearing elements must be provided in the bearing area. In addition, this known relay contains a relatively large number of individual parts in order to transmit the armature movement to the contact spring via an actuating element. However, this means that both the volume and the manufacturing outlay for this known relay are still relatively high.

Aufgabe der Erfindung ist es, ein Relais mit einem einfachen, aber wirkungsvollen Magnetsystem und mit einer Kontakteinheit konstruktiv so zu gestalten, dass mit wenigen einfachen Teilen ein kopakter Aufbau und damit ein geringes Volumen erzielt wird, wobei bei gleichem Grundaufbau durch geringe Abänderung einzelner Teile sowohl ein hochkant stehender Einbau als auch ein flach liegender Einbau des quaderförmigen Relais möglich ist.The object of the invention is to construct a relay with a simple but effective magnet system and with a contact unit in such a way that a compact structure and thus a small volume is achieved with a few simple parts, with both having the same basic structure due to slight modification of individual parts an upright installation as well as a flat installation of the rectangular relay is possible.

Erfindungsgemäss wird diese Aufgabe bei einem Relais der eingangs genannten Art dadurch gelöst, dass der Anker mit seinem ersten Seitenschenkel auf dem ersten Jochschenkel um eine zur Spulenachse senkrechte Achse schwenkbar gelagert ist und mit seinem zweiten Seitenschenkel gegenüber dem zweiten Jochschenkel einen Arbeitsluftspalt bildet und dass auf dem Ankermittelteil eine Kontaktfeder befestigt ist, welche mit ihrem ein Kontaktstück tragenden freien Ende den Anker und das Kernjoch U-förmig umgreift und auf der dem Anker entgegengesetzten Seite des Kernjoches mit mindestens einem im Spulenkörper verankerten, mit einer Anschlussfahne versehenen Gegenkontaktblech zusammenwirkt.According to the invention, this object is achieved in a relay of the type mentioned at the outset in that the armature with its first side leg is pivotally mounted on the first yoke leg about an axis perpendicular to the coil axis and forms a working air gap with its second side leg relative to the second yoke leg An anchor middle part is attached to a contact spring which, with its free end carrying a contact piece, engages around the armature and the core yoke in a U-shape and interacts on the side of the core yoke opposite the armature with at least one mating contact plate anchored in the coil former and provided with a connecting lug.

Durch die erfindungsgemässe Gestaltung des Kernjoches und des Ankers und deren Anordnung zueinander ergibt sich eine im Verhältnis zur Gesamtgrösse des Relais sehrgrosse Koppelfläche zwischen Anker und Kern, wodurch sich hohe Kontaktkräfte bei geringer Ansprecherregung erzielen lassen. Ausserdem wird durch die unmittelbare Verbindung der Kontaktfeder mit dem Anker die Zahl der benötigten Einzelteile gering gehalten, wobei durch die unmittelbare Betätigung der Kontaktfeder am Anker und durch deren U-förmige Biegung zur Kontaktstelle hin eine Relativbewegung ihres kontaktgebenden Endes in zwei Richtungen ermöglicht wird, so dass die damit erzielte Reibung auch bei sehr geringen Schaltströmen eine gute Selbstreinigung der Kontaktoberflächen ermöglicht. Besonders günstig ist auch die gegenüberliegende Anordnung von Anker und Kontakteinheit zu beiden Seiten des Kernjoches. Auf diese Weise werden die durch die Spulenwicklung und das Kernjoch vorgegebenen freien Räume optimal ausgenutzt.The inventive design of the core yoke and the armature and their arrangement relative to one another results in a very large coupling surface in relation to the overall size of the relay between armature and core, as a result of which high contact forces can be achieved with low excitation of the response. In addition, the number of individual parts required is kept low by the direct connection of the contact spring to the armature, the relative actuation of the contacting end in two directions being made possible by the direct actuation of the contact spring on the armature and by its U-shaped bend toward the contact point that the friction achieved with this enables good self-cleaning of the contact surfaces even at very low switching currents. The opposite arrangement of armature and contact unit on both sides of the core yoke is also particularly favorable. In this way, the free spaces specified by the coil winding and the core yoke are optimally used.

In einer vorteilhaften Weiterbildung der Erfindung dient die Kontaktfeder gleichzeitig als Lagerfeder für den Anker und ist zu diesem Zweck sowohl mit dem Anker als auch mit dem Kernjoch verbunden. Diese Verbindung kann beispielsweise durch Nieten oder Schweissen hergestellt sein. In Verlängerung der Verbindungsstelle mit dem Kernjoch besitzt die Kontaktfeder in einer zweckmässigen Ausführungsform eine angeformte Anschlussfahne. In ener anderen Ausführungsform kann aber auch eine am Kernjoch angeformte, gegebenenfalls durch Prägen im Querschnitt verminderte Anschlussfahne vorgesehen sein. Zur Erzielung einer Rückstellwirkung der Kontaktfeder auf den Anker besitzt diese zweckmässigerweise angeformte und freigeschnittene Federschenkel, mittels derer sie den ersten Jochschenkel und den ersten Seitenschenkel des Ankers umklammert. Zur Prelldämpfung beim Abfallen des Ankers kann die Kontaktfeder ausserdem zusätzlich einen Anschlaglappen besitzen.In an advantageous development of the invention, the contact spring also serves as a bearing spring for the armature and is connected to both the armature and the core yoke for this purpose. This connection can be made, for example, by riveting or welding. In an expedient embodiment, the contact spring has an integrally formed connecting lug in an extension of the connection point with the core yoke. In another embodiment, however, a connecting lug may be provided which is integrally formed on the core yoke and possibly reduced in cross section by embossing. In order to achieve a restoring effect of the contact spring on the armature, it advantageously has molded-on and cut-free spring legs, by means of which it clasps the first yoke leg and the first side leg of the armature. The contact spring can also have a stop tab to absorb bounce when the armature falls off.

Zur Erzielung einer langen freien Federlänge und zur Erhöhung der Reibwirkung an der Kontaktstelle ist in einer zweckmässigen Ausführungsform vorgesehen, dass die Kontaktfeder in dem den Anker seitlich umfreifenden Abschnitt schräg zur Bewegungsrichtung des zweiten Seitenschenkels des Ankers verläuft. Weiterhin besitzt das Relais in einer zweckmässigen Ausgestaltung auf der dem Anker entgegengesetzten Seite des Kernjoches zwei Gegenkontaktbleche, welche parallel zu einander und zum Kernjoch in Nuten des Grundkörpers einsteckbar befestigt sind, wobei zwischen ihren Kontaktflächen das kontaktgebundene Ende der Kontaktfeder bewegbar ist. In zweckmässiger Ausgestaltung erstrecken sich die Gegenkontaktbleche zwischen ihren Befestigungsnuten im wesentlichen über die gesamte Spulenlänge, wodurch nicht nur eine sehr genaue Festlegung der Gegenkontaktbleche, sondern auch eine gute Wärmeableitung erzielt wird.In order to achieve a long free spring length and to increase the frictional effect at the contact point, it is provided in an expedient embodiment that the contact spring extends obliquely to the direction of movement of the second side leg of the armature in the section that laterally encircles the armature. Furthermore, in an expedient embodiment, the relay has two mating contact plates on the side of the core yoke opposite the armature, which are fastened in parallel to one another and to the core yoke in grooves in the base body, the contact-bound end of the contact spring being movable between their contact surfaces. In an expedient embodiment, the mating contact plates extend between their fastening grooves essentially over the entire coil length, as a result of which not only a very precise fixing of the mating contact plates, but also good heat dissipation is achieved.

In vorteilhafter Ausgestaltung verlaufen die Gegenkontaktbleche mit ihren Anschlussfahnen entweder geradlinig oder zwischen Gegenkontaktblech und Anschlussfahne ist ein rechter Winkel ausgebildet. Damit kann das Relais wahlweise für Hochkant-oder für Flacheinbau gefertigt werden.In an advantageous embodiment, the mating contact plates with their connecting lugs either run in a straight line or a right angle is formed between the mating contact plate and the connecting lug. The relay can thus be manufactured either for upright or for flat installation.

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

  • Fig. 1 bis 6 eine erste Ausführungsform für ein erfindungsgemässes Relais in verschiedenen Ansichten,
  • Fig. 7 eine im Detail abgewandelte Ausführungsform in einer Ansicht entsprechend Fig. 5,
  • Fig. 8 bis 12 eine weitere Ausführungsform eines Relais mit Merkmalen nach der Erfindung in verschiedenen Ansichten.
The invention is explained in more detail below using exemplary embodiments with reference to the drawing. Show it:
  • 1 to 6 a first embodiment for a relay according to the invention in different views,
  • 7 shows a modified embodiment in a view corresponding to FIG. 5,
  • 8 to 12 a further embodiment of a relay with features according to the invention in different views.

Das in den Fig. 1 bis 6 dargestellte Relais besitzt eine sogenannte stehende Ausführungsform, d.h. die Anschlussstifte sind so aus dem Gehäuse herausgeführt, dass das quaderförmige Relais in seiner Einbaulage hochkant steht und eine kleine Grundfläche aufweist. Das Relais besitzt einen aus Isolierstoff bestehenden Spulenkörper bzw. Grundkörper 1, der durch Umspritzen eines Kernjoches 2 gewonnen ist. Dieses Kernjoch 2 besitzt einen innerhalb der Spulenwicklung 3 verlaufenden Mittelabschnitt 2a sowie zwei ausserhalb der Spulenwicklung quer zur Spulenachse verlaufende Jochschenkel 2b und 2c. Der Jochschenkel 2b ist dabei etwa kürzer gehalten, um Platz für im Grundkörper verankerte Spulenanschlussstifte 4 zu lassen. Das Kernjoch ist als ebenes Schnitteil gestaltet und dadurch einfach und billig herzustellen. Es ist zur Bildung des Grundkörpers mit Kunststoff umspritzt, wobei dieser Grundkörper aufgrund des eingespritzten Kernjoches aus Metall trotz geringer Wandstärken sehr stabil und masshaltig ausgeführt werden kann. Mit diesen geringen Wandstärken des Grundkörpers kann bei vorgegebenem Volumen ein grosser Wickelraum geschaffen werden, mit dem die temperaturerhöhende Leistungsaufnahme bei vorgegebener Erregung gering gehalten werden kann.The relay shown in Figs. 1 to 6 has a so-called standing embodiment, i.e. the connection pins are led out of the housing in such a way that the rectangular relay is upright in its installed position and has a small footprint. The relay has a coil body or base body 1 made of insulating material, which is obtained by extrusion coating a core yoke 2. This core yoke 2 has a central section 2a running inside the coil winding 3 and two yoke legs 2b and 2c running outside the coil winding transversely to the coil axis. The yoke leg 2b is kept approximately shorter in order to leave space for coil connecting pins 4 anchored in the base body. The core yoke is designed as a flat cut part and is therefore easy and inexpensive to manufacture. It is encapsulated with plastic to form the base body, which base body can be made very stable and true to size despite the small wall thicknesses due to the injected core yoke made of metal. With these small wall thicknesses of the base body, a large winding space can be created for a given volume, with which the temperature-increasing power consumption can be kept low with a given excitation.

Auf dem Kernjoch ist ein U-förmiger Anker 5 angeordnet, der einen Mittelteil 5a sowie entsprechend den beiden Jochschenkeln gestaltete Seitenschenkel 5b und 5c unterschiedlicher Länge aufweist. Auch der Anker ist wie das Kernjoch aus einem ebenen Blech geschnitten. Der Anker 5 ist mit seinem ersten Seitenschenkel 5b auf dem ersten Jochschenkel 2b so gelagert, dass er eine Schwenkbewegung um eine zur Spulenachse senkrechte Schwenkachse ausführen kann und mit seinem zweiten Seitenschenkel 5c gegenüber dem zweiten Jochschenkel 2c einen Arbeitsluftspalt bildet. Der Jochschenkel 2c und der Ankerschenkel 5c erstrecken sich über die gesamte Relaisbreite, wodurch sich eine grosse Polfläche ergibt. Dadurch kann auch bei einem grossen Ankerhub eine verhältnismässig grosse Ansprechempfindlichkeit erreicht werden.A U-shaped armature 5 is arranged on the core yoke, which has a central part 5a and side legs 5b and 5c of different lengths designed in accordance with the two yoke legs. Like the core yoke, the anchor is also cut from a flat sheet. The armature 5 is mounted with its first side leg 5b on the first yoke leg 2b in such a way that it can perform a pivoting movement about a pivot axis perpendicular to the coil axis and forms a working air gap with its second side leg 5c with respect to the second yoke leg 2c. The yoke leg 2c and the armature leg 5c extend over the entire relay width, which results in a large pole area. As a result, a relatively high response sensitivity can be achieved even with a large anchor stroke.

Auf dem Ankermittelteil ist ene Kontaktfeder 6 mit einer Warzennietung 7 befestigt, welche gleichzeitig als Lagerfeder für den Anker dient. Die Kontakt- und Lagerfeder 6 umschliesst mit ihrem teilweise freigeschnittenen und bogenförmig gestalteten Federabschnitt 6a klammerförmig den ersten Ankerschenkel 5b und den ersten Jochschenkel 2b und ist an dem Jochschenkel 2b durch Schweissung befestigt. Durch die Vorspannung dieses Federabschnittes 6a wird die Rückstellkraft des Ankers eingestellt. Die Federkrafttoleranzen können durch Ausrichten der Teile vor dem Anschweissen am Jochschenkel 2b ausgeschaltet werden. An dem Federabschnitt 6a ist ausserdem ein Anschlussstachel 8 durch Schweissen befestigt, der innerhalb des Gehäuses abgekröpft und im gewünschten Raster nach aussen geführt ist.On the middle part of the armature, a contact spring 6 is fastened with a wart rivet 7, which also serves as a bearing spring for the armature. The contact and bearing spring 6 encloses the first armature leg 5b and the first yoke leg 2b with its partially cut-out and arcuate spring section 6a and is fastened to the yoke leg 2b by welding. The restoring force of the armature is set by the prestressing of this spring section 6a. The spring force tolerances can be switched off by aligning the parts before welding onto the yoke leg 2b. On the spring section 6a, a connecting pin 8 is also attached by welding, which is bent within the housing and guided outwards in the desired grid.

Die Kontaktfeder 6 umgreift mit ihrem U-förmig gestalteten kontaktgebenden Abschnitt 6b den Anker und das Kernjoch seitlich derart, dass sie auf der dem Anker gegenüberliegenden Seite des Kernjoches als Mittelkontaktfeder zwischen zwei Gegenkontaktblechen 9 und 10 umschaltbar ist. Zur Erzielung einer Doppelkontaktgabe ist die Kontaktfeder 6 dabei in zwei kontaktgebende Enden 6c und 6d aufgespalten, die jeweils ein Kontaktstück 6e tragen. Die Kontaktfeder bildet einen zusätzlich angeformten Aufprallzahn 20, welcher bei Abschaltung der Erregung den Rückprall des Ankers dämpft und somit Kontaktprellungen des Öffnerkontaktes mindert.The contact spring 6, with its U-shaped contact section 6b, laterally engages around the armature and the core yoke in such a way that it can be switched between two mating contact plates 9 and 10 as a central contact spring on the side of the core yoke opposite the armature. To achieve a double contact, the contact spring 6 is split into two contact-making ends 6c and 6d, each of which carries a contact piece 6e. The contact spring forms an additionally formed impact tooth 20 which dampens the rebound of the armature when the excitation is switched off and thus reduces contact bruises of the break contact.

Die Gegenkontaktbleche 9 und 10 sind wiederum als ebene Schnitteile ausgeführt, mit angeformten oder angeschweissten Anschlussfahnen 1 1 bzw. 12 versehen und in entsprechende Nuten 13 bzw. 14 des Grundkörpers 1 eingesteckt und dort durch Presssitz gehalten. Durch die relativ grosse Fläche der Kontaktbleche 9 und 10 sind sie in der Lage, die im Kontaktkreis entstehende Wärme abfliessen und abstrahlen zu lassen. Die Gegenkontaktbleche 9 und 10 sind als ebene Schnitteile leicht herzustellen; sie sind nur im Kontaktbereich mit Edelmetall platiert. Die Relativbewegung der Kontaktfeder 6, die aufgrund ihrer Befestigung am Anker und ihrer Formgebung in zwei zueinander senkrechten Richtungen möglich ist, ergibt sich ein guter Selbstreinigungseffekt an den Kontaktoberflächen.The counter-contact plates 9 and 10 are in turn designed as flat cut parts, provided with molded or welded-on connection lugs 11 and 12 and inserted into corresponding grooves 13 and 14 of the base body 1 and held there by an interference fit. Due to the relatively large area of the contact plates 9 and 10, they are able to let the heat generated in the contact circuit flow away and radiate. The counter contact plates 9 and 10 are easy to manufacture as flat cut parts; they are only plated with precious metal in the contact area. The relative movement of the contact spring 6, which is possible due to its attachment to the armature and its shape in two directions perpendicular to one another, results in a good self-cleaning effect on the contact surfaces.

Das Relais ist in ein Gehäuse eingesetzt, das durch eine Schutzkappe 1 und einen Sockel 16 gebildet ist. Durch ein zusätzlich aufgestecktes Vlies 17 im Sockelbereich, welches mit aushärtbarem Kunstharz getränkt ist, wird das Gehäuse abgedichtet. In der Schutzkappe 15 ist ausserdem eine Getterkammer 18 ausgebildet, in welcher eine Getterpille 19 eingeklemmt werden kann.The relay is inserted into a housing which is formed by a protective cap 1 and a base 16. The housing is sealed by an additionally attached fleece 17 in the base area, which is impregnated with hardenable synthetic resin. In the protective cap 15, a getter chamber 18 is also formed, in which a getter pill 19 can be clamped.

Fig. 7 zeigt eine geringfügig abgewandelte Ausführungsform in einer Fig. 5 entsprechenden Darstellung. Anstelle eines zusätzlichen Anschlussstiftes 8 ist in diesem Fall das Kernjoch 2 mit einer angeformten und geprägten Verlängerung 2d versehen, die als Anschlussstachel für die Kontaktfeder 6 dient. Im übrigen ist das Relais ähnlich aufgebaut wie das bereits anhand der Fig. 1 bis 6 beschriebene.FIG. 7 shows a slightly modified embodiment in a representation corresponding to FIG. 5. Instead of an additional connecting pin 8, the core yoke 2 is in this case provided with an integrally formed and embossed extension 2d, which serves as a connecting pin for the contact spring 6. Otherwise, the relay is constructed similarly to that already described with reference to FIGS. 1 to 6.

Das in den Fig. 8 bis 12 dargestellte Relais besitzt im wesentlichen die gleiche Grundkonstruktion wie das vorher beschriebene, es ist jedoch insbesondere durch Abwandlung der Anschlussstifte so gestaltet, dass es für liegenden Einbau mit geringer Bauhöhe geeignet ist. Dieses Relais besitzt einen Grundkörper 21 mit eingebettetem Kernjoch 22, der eine Wicklung 23 und Anschlussstifte 24 trägt. Das Kernjoch besitzt zwei Jochschenkel 22b und 22c, wobei ein U-förmiger Anker 25 mit einem ersten Seitenschenkel 25b auf dem Jochschenkel 22b gelagert ist und mit seinem zweiten Seitenschenkel 25c einen Arbeitsluftspalt gegenüber dem Jochschenkel 22c bildet. Eine Kontakt- und Lagerfeder 26 ist durch eine Nietung 27 auf dem Mittelabschnitt 25a des Ankers 25 befestigt, sie umgreift mit ihrem bogenförmigen Federabschnitt 26a den Ankerschenkel 25b und den Jochschenkel 22b und ist mit Schweisspunkten 28 am Jochschenkel 22b befestigt. Zur Vorfixierung dient ein zusätzlich angeformter Federlappen 26f, der an der Unterseite des Jochschenkels 2b angreift. Auch ein Anschlussstift 26g ist an der Kontaktfeder 26 mit angeformt.The relay shown in FIGS. 8 to 12 has essentially the same basic construction as the one described above, but it is designed, in particular, by modifying the connecting pins in such a way that it is suitable for horizontal installation with a low overall height. This relay has a base body 21 with an embedded core yoke 22, which carries a winding 23 and connecting pins 24. The core yoke has two yoke legs 22b and 22c, a U-shaped armature 25 with a first side leg 25b being mounted on the yoke leg 22b and with its second side leg 25c forming a working air gap with respect to the yoke leg 22c. A contact and bearing spring 26 is fastened by a rivet 27 on the middle section 25a of the armature 25, it engages around the armature leg 25b and the yoke leg 22b with its arcuate spring section 26a and is fastened with welding points 28 to the yoke leg 22b. An additional molded-on spring tab 26f, which engages on the underside of the yoke leg 2b, serves for pre-fixing. A connecting pin 26g is also formed on the contact spring 26.

Wie in dem vorher beschriebenen Beispiel umgreift die Kontaktfeder mit einem U-förmigen Abschnitt 26b den Anker und das Kernjoch und ist an ihrem freien Ende in zwei kontaktgebende Endabschnitte 26c und 26d aufgespalten, welche jeweils ein Kontaktstück 26e tragen. Mit diesen ist sie zwischen den beiden Gegenkontaktblechen 29 und 30 umschaltbar. Diese sind mit rechtwinklig abgebogenen Anschlussfahnen 31 bzw. 32 versehen und zur Befestigung in Nuten 33 bzw. 34 des Grundkörpers 21 eingesteckt.As in the example described above, the contact spring engages with a U-shaped section 26b the armature and the core yoke and is split at its free end into two contacting end sections 26c and 26d, each of which carries a contact piece 26e. With these, it can be switched between the two mating contact plates 29 and 30. These are provided with connection lugs 31 and 32 bent at right angles and inserted for fastening in grooves 33 and 34 of the base body 21.

Als Gehäuse dient eine Schutzkappe 35 mit einem Sockel 36, wobei die Randnut bzw. die Durchbrüche für die Anschlussstifte mit Vergussmasse 37 abgedichtet sind. Im Grundkörper ist ausserdem eine Kammer 38 zur Aufnahme einer Getterpille 39 vorgesehen.A protective cap 35 with a base 36 serves as the housing, the edge groove or the openings for the connecting pins being sealed with casting compound 37. A chamber 38 for receiving a getter pill 39 is also provided in the base body.

Claims (10)

1. An electromagnetic relay comprising a fundamental body (1; 21) which supports a winding, a flat core yoke (2; 22) which has its central section embedded into the fundamental body and which at both ends outside the coil winding (3; 23) respectively possesses a yoke flank (2b, 2c; 22b, 22c) which runs transversely to the coil axis, and comprising a flat U-shaped armature (5; 25) which is positioned on the core yoke and which has its central section parallel to the coil axis and its two lateral flanks (5b, 5c; 25b, 25c) substantially at right-angles to the coil axis so as to embrace the coil winding, characterised in that the armature (5; 25) has its first lateral flank (5b; 25b) mounted on the first yoke flank (2b; 22b) so as to be pivotable about an axis at right-angles to the coil axis, and by means of its second lateral flank (5c; 25c) forms a working air gap opposite the second yoke flank (2c; 22c) and that a contact spring (6; 26) is secured on the central section of the armature (5a; 25a), which contact spring by means of its free end (6b; 26b) supporting a contact piece (6e; 26e) embraces the armature (5; 25) and the core yoke (2; 22) in a U-shaped fashion and cooperates with at least one counter-contact plate (9, 10; 29, 30), which is fixed in the fundamental body (1; 21) and provided with a terminal lug (11, 12; 31, 32), on the side of the core yoke (2; 22) which is opposite the armature (5; 25).
2. A relay as claimed in claim 1, characterised in that the contact spring (6; 26) as a bearing spring is connected both to the armature (5; 25) and to the core yoke (2; 22).
3. A relay as claimed in claim 1 or 2, characterised in that an embossed extension (2d) on the core yoke forms a terminal lug for the contact spring (6).
4. A relay as claimed in claim 1, characterised in that the contact spring (26) forms a terminal lug (26g) in an extension of the fixing point on the core yoke (22).
5. A relay as claimed in one of claims 1 to 4, characterised in that the contact spring (6; 26) embraces the first yoke flank (2b; 22b) and the first lateral flank (5b; 25b) of the armature (5; 25) by means of attached and cut-free spring flanks (6a; 26a).
6. A relay as claimed in one of claims 1 to 5, characterised in that a stop lug (20) attenuating the movement of the armature is attached to the contact spring (6).
7. A relay as claimed in one of claims 1 to 6, characterised in that the section (6b; 26b) of the contact spring (6; 26) which laterally embraces the armature (5; 25) extends transversely to the direction of movement of the contact pieces (6e; 26e).
8. A relay as claimed in one of claims 1 to 7, characterised in that on the side of the core yoke (2; 22) which is opposite the armature (5; 25) two counter-contact plates (9, 10; 29, 30), between whose contact surfaces the contact-making end of the contact spring (6; 26) can be moved, are secured parallel to one another and to the core yoke (2; 22) so as to be insertable in grooves (13, 14; 33, 34) in the fundamental body (1; 21).
9. A relay as claimed in one of claims 1 to 8, characterised in that the counter-contact plates (9, 10; 29, 30) extend over essentially the entire coil length.
10. A relay as claimed in one of claims 1 to 9, characterised in that the counter-contact plates (9, 10; 29, 30) extend in a straight line by means of their terminal lugs (11, 12) or a right-angle is alternatively formed between counter-contact plate (29, 30) and terminal lug (31, 32).
EP84109509A 1983-08-12 1984-08-09 Electromagnetic relay Expired EP0133582B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84109509T ATE26362T1 (en) 1983-08-12 1984-08-09 ELECTROMAGNETIC RELAY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3329239 1983-08-12
DE19833329239 DE3329239A1 (en) 1983-08-12 1983-08-12 ELECTROMAGNETIC RELAY

Publications (3)

Publication Number Publication Date
EP0133582A2 EP0133582A2 (en) 1985-02-27
EP0133582A3 EP0133582A3 (en) 1985-04-03
EP0133582B1 true EP0133582B1 (en) 1987-04-01

Family

ID=6206455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109509A Expired EP0133582B1 (en) 1983-08-12 1984-08-09 Electromagnetic relay

Country Status (5)

Country Link
US (1) US4567457A (en)
EP (1) EP0133582B1 (en)
JP (1) JPS6062032A (en)
AT (1) ATE26362T1 (en)
DE (2) DE3329239A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0337268Y2 (en) * 1984-09-13 1991-08-07
AT389958B (en) * 1986-03-24 1990-02-26 Uninorm Anstalt RELAY
DE3640996A1 (en) * 1986-12-01 1988-06-09 Bosch Gmbh Robert Electromagnetic relay
DE19544625C2 (en) * 1995-11-30 2001-05-31 Hella Kg Hueck & Co Armature bearing for a hinged armature relay
EP3570302B8 (en) * 2018-05-18 2021-08-04 Tyco Electronics Austria GmbH Yoke assembly for a magnetic switching device, such as a relay, magnetic assembly, and magnetic switching device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2107848A (en) * 1936-11-14 1938-02-08 Utah Radio Products Company Circuit controlling device
BE457294A (en) * 1943-08-19
BE771263A (en) * 1971-08-13 1972-02-14 Bell Telephone Mfg ELECTROMAGNETIC RELAY, (EXEC.: O. WUYTS, M. VAN DER AUWERA),
DE2254000C3 (en) * 1972-11-04 1975-06-19 Swf-Spezialfabrik Fuer Autozubehoer Gustav Rau Gmbh, 7120 Bietigheim Small relays, in particular for printed circuit boards
JPS5124753A (en) * 1974-08-22 1976-02-28 Matsushita Electric Works Ltd Denjikeidenki
US4272745A (en) * 1978-06-30 1981-06-09 Omron Tateisi Electronics Co. Electromagnetic relay
DE8302962U1 (en) * 1983-02-03 1983-06-09 Siemens AG, 1000 Berlin und 8000 München Electromagnetic relay

Also Published As

Publication number Publication date
US4567457A (en) 1986-01-28
DE3462966D1 (en) 1987-05-07
JPS6062032A (en) 1985-04-10
DE3329239A1 (en) 1985-02-21
ATE26362T1 (en) 1987-04-15
EP0133582A2 (en) 1985-02-27
EP0133582A3 (en) 1985-04-03

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