EP0017129B2 - Polarised relay having contact blades - Google Patents

Polarised relay having contact blades Download PDF

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Publication number
EP0017129B2
EP0017129B2 EP80101550A EP80101550A EP0017129B2 EP 0017129 B2 EP0017129 B2 EP 0017129B2 EP 80101550 A EP80101550 A EP 80101550A EP 80101550 A EP80101550 A EP 80101550A EP 0017129 B2 EP0017129 B2 EP 0017129B2
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EP
European Patent Office
Prior art keywords
contact
pieces
relay
disposed
bobbin
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
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EP80101550A
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German (de)
French (fr)
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EP0017129B1 (en
EP0017129A1 (en
Inventor
Hans Sauer
Humihiro Kasano
Yoichi Isobe
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SAUER, HANS
Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Priority claimed from JP3881679A external-priority patent/JPS6055938B2/en
Priority claimed from JP7578779A external-priority patent/JPS55166833A/en
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to AT80101550T priority Critical patent/ATE5036T1/en
Publication of EP0017129A1 publication Critical patent/EP0017129A1/en
Publication of EP0017129B1 publication Critical patent/EP0017129B1/en
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Publication of EP0017129B2 publication Critical patent/EP0017129B2/en
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    • 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 tongue contact relay according to the first part of patent claim 1.
  • Such a relay is known from DE-B-1 251 869.
  • This document relates to a protective tube contact relay, in which the contact system is melted into an evacuated glass bulb, over which the relay coil is pushed.
  • the coil must have a relatively large opening, which means that the magnetic field within the coil opening is no longer homogeneous across its cross section and therefore different magnetic forces act on the different tongues to be actuated by the coil field.
  • the relatively large cross-sectional area of the coil opening also means that the field line concentration is lower for the same total flow and therefore the magnetic forces acting on the individual tongues are weakened.
  • the fixed contact pieces are formed on metal tabs, which are soldered to the areas on the connection side on existing metallization strips on opposite surfaces of the ceramic bracket and in other areas connected to these areas by a double offset, close to the contact ends along opposite surfaces of a permanent magnet.
  • the contact distance between the fixed contact pieces is influenced not only by the thickness of the permanent magnet but also by that of the ceramic bracket and the exact shape of the double cranked metal lugs. If these three parameters are not exactly matched to one another, the fixed contact pieces facing each other are more or less spread apart, especially since their position is only defined in one direction by the permanent magnet located between them. Scattering in the distance between the fixed contact pieces, which is particularly important for the switching behavior, not only affects one relay to another, but also influences the synchronicity of the contacts of the same relay arranged next to one another.
  • the tongue contact relay which is also known from DE-B-1 614874, essentially corresponds to the known relay explained above, with the exception that it is not a polarized relay and the two fixed contacts do not have a permanent magnet but rather a non-magnetic intermediate body are separated.
  • the individual contacts are always at the same mutual distance from one another, this relates to the distance between adjacent contacts and not, as in the invention, the critical distance for the switching behavior of the opposite one another and which forms a changeover contact with a contact tongue Fixed contact pieces.
  • the invention has for its object to provide a polarized tongue contact relay, in which a simultaneous opening and closing of all contacts is ensured with the highest possible precision.
  • the measure of claim 2 ensures that the desired precision of the contact actuation can be achieved even with a two-part coil body, while the measure of claim 3 results in a further improvement in the synchronicity of the contact actuation.
  • a permanent magnet 1 preferably made of BaOFe, between four pole shoes 2a, 2b, 2c and 2d which are electrically insulated from one another.
  • a pair of pole shoes is encased with an injection-molded insulating part 7a, 7b, which has a relatively thin layer thickness d on its side facing the magnet and a much thicker layer thickness d 2 on the outside.
  • the layer thickness d should be thin so that there is the best possible coupling between the magnet and the pole piece, but on the other hand it should not be zero because it serves not only for insulation purposes but also as a magnetic air gap.
  • the extrusion coating has the advantage that a semi-cylindrical profile (FIG. 2c) can be formed, with the aid of which tolerances of the pole shoes with the fixed contact pieces or fixed contacts 4a, 4b, 4c and 4d relative to the guide grooves 9a, 9b, 9c, 9d in the bobbin 10 and its contact surfaces 20a, 20b.
  • the fixed contacts could also be replaced by appropriately cranked pole shoes; However, it is expedient to produce them separately, because they can then be subjected to a different surface treatment than is required for the pole shoes and their connections 8a, 8b, 8c, 8d because of the required contact conditions.
  • the two contact tongues arranged parallel to one another are preferably covered with a plastic part 6 for the purpose of parallel guidance. It does not matter whether this sheathing is carried out by ultrasonically welding two plastic films or by extrusion coating. In the case of overmolding, the center contact connections 5a, 5b could also be extrusion-coated with plastic after the spot welding with the contact tongues 3a, 3b in order to increase the security against loosening of the connection point, which is particularly stressed during the adjustment.
  • This part connected to a unit (FIG. 2a) is also positioned in the cutouts 9 of the coil body.
  • the relay assembly assembled in this way is inserted with its connections into the openings 15g of the base body 15 (FIG. 2e) and, after the permanent magnet 1 has been inserted, can be inserted between the two pairs of pole shoes (FIGS. 2c and 2d) positioned in the coil body 10 and after the electrical connection Connection of the coil wire ends with the coil connections 15c, 15d or 15e, 15f located in the base body 15 are adjusted at the connection point of the contact tongues 3a, 3b with the center contact connections 5a, 5b.
  • a ferromagnetic cap which differs from the final cap 16 only by an opening which allows access to the adjustment point.
  • the base body 15 has a shoulder 15b, on which the cap 16 is supported, and one or two openings 15a, which serve or serve both for filling with protective gas and for introducing potting compound 17.
  • the circuit 13 shown in FIG. 1 is used for synchronous contact actuation, even when the excitation voltage increases or decreases, a capacitor in series with the coil and an IC with a trigger and flip-flop according to DE-A-2 747 607 being provided.
  • the contact tongue is set to bistable behavior.
  • the trigger stage only switches at a specified voltage that is sufficient for both changeover contacts to respond suddenly.
  • the capacitor charges and blocks the flow of current through the coil.
  • a relay set to monostable would drop off again immediately, while the bistable relay remained in this position until the supply voltage was interrupted and the capacitor discharged via the coil winding and the flip-flop of the IC, thus instantly returning the relay contacts to their starting position.
  • the bistable relay is impressed with a monostable switching behavior, a synchronous actuation of both changeover contacts is guaranteed and, moreover, control energy is only required during the very short switch-on process of approx. 1 ms.

Description

Die Erfindung betrifft ein gepoltes Zungenkontaktrelais gemäß dem ersten Teil des Patentanspruchs 1.The invention relates to a polarized tongue contact relay according to the first part of patent claim 1.

Ein derartiges Relais ist aus der DE-B-1 251 869 bekannt. Diese Druckschrift bezieht sich auf ein Schutzrohrkontaktrelais, bei dem das Kontaktsystem in einen evakuierten Glaskolben eingeschmolzen ist, über den die Relaisspule geschoben wird. Zur Aufnahme des Glaskolbens muß die Spule eine verhältnismäßig große Öffnung aufweisen, was bedeutet, daß das Magnetfeld innerhalb der Spulenöffnung über deren Querschnitt nicht mehr homogen ist und daher auf die verschiedenen vom Spulenfeld zu betätigenden Zungen unterschiedliche Magnetkräfte einwirken. Die verhältnismäßig große Querschnittsfläche der Spulenöffnung führt ferner dazu, daß bei gleicher Gesamtdurchflutung die Feldlinienkonzentration geringer ist und daher die auf die einzelnen Zungen einwirkenden Magnetkräfte geschwächt sind.Such a relay is known from DE-B-1 251 869. This document relates to a protective tube contact relay, in which the contact system is melted into an evacuated glass bulb, over which the relay coil is pushed. To accommodate the glass bulb, the coil must have a relatively large opening, which means that the magnetic field within the coil opening is no longer homogeneous across its cross section and therefore different magnetic forces act on the different tongues to be actuated by the coil field. The relatively large cross-sectional area of the coil opening also means that the field line concentration is lower for the same total flow and therefore the magnetic forces acting on the individual tongues are weakened.

Bei dem bekannten Relais sind Polschuhe mit Festkontaktstücken und die Kontaktzungen an einem U-förmigen Keramikbügel befestigt, der seinerseits im Glaskolben dadurch gehaltert ist, daß die an ihm angebrachten Kontaktfahnen mit Kontaktstiften verlötet sind, wobei diese wiederum in den Glaskolben eingeschmolzen sind. Da somit die gegenseitige Positionierung der Kontaktteile relativ zueinander sowie relativ zu dem den « Spulenkörper » bildenden Glaskolben und letztlich zur Spule über mehrere verschiedene Bauteile erfolgt und da einige der beteiligten Verbindungsarten (Lötung, Einschmelzung) an sich ungenau sind, ergeben sich unter den Relais einer Fertigung erhebliche Streuungen der Kennwerte.In the known relay, pole pieces with fixed contact pieces and the contact tongues are fastened to a U-shaped ceramic bracket, which in turn is held in the glass bulb by the contact lugs attached to it being soldered to contact pins, these in turn being melted into the glass bulb. Since the mutual positioning of the contact parts relative to one another and relative to the glass bulb forming the “coil body” and ultimately to the coil is thus carried out via several different components and since some of the types of connection involved (soldering, melting) are inaccurate per se, there is one among the relays Manufacturing considerable scatter of the characteristic values.

Bei dem bekannten Relais sind ferner die mit jeweils einer Kontaktzunge einen Umschaltkontakt bildenden Festkontaktstücke an Metallfahnen angeformt, die mit anschlußseitigen Bereichen an auf gegenüberliegenden Flächen des Keramikbügels vorhandene Metallisierungsstreifen aufgelötet und in mit diesen Bereichen durch jeweils eine doppelte Kröpfung verbundenen, den Kontaktenden nahen weiteren Bereichen an gegenüberliegenden Flächen eines Dauermagnets entlanggeführt. Bei dieser Anordnung wird der Kontaktabstand zwischen den Festkontaktstücken nicht nur durch die Dicke des Dauermagnets sondern auch durch die des Keramikbügels und die exakte Formgebung der doppelt gekröpften Metallfahnen beeinflußt. Sind diese drei Parameter nicht genau aufeinander abgestimmt, so werden die einander gegenüberstehenden Festkontaktstücke mehr oder weniger aufgespreizt, zumal ihre Lage durch den dazwischen befindlichen Dauermagnet nur in einer Richtung definiert ist. Streuungen in dem für das Schaltverhalten besonders wichtigen Abstand zwischen den Festkontaktstücken wirken sich nicht nur von einem Relais zum andern aus, sondern beeinflussen auch die Synchronizität der nebeneinander angeordneten Kontakte desselben Relais.In the known relay, the fixed contact pieces, each forming a changeover contact, are formed on metal tabs, which are soldered to the areas on the connection side on existing metallization strips on opposite surfaces of the ceramic bracket and in other areas connected to these areas by a double offset, close to the contact ends along opposite surfaces of a permanent magnet. With this arrangement, the contact distance between the fixed contact pieces is influenced not only by the thickness of the permanent magnet but also by that of the ceramic bracket and the exact shape of the double cranked metal lugs. If these three parameters are not exactly matched to one another, the fixed contact pieces facing each other are more or less spread apart, especially since their position is only defined in one direction by the permanent magnet located between them. Scattering in the distance between the fixed contact pieces, which is particularly important for the switching behavior, not only affects one relay to another, but also influences the synchronicity of the contacts of the same relay arranged next to one another.

Das aus DE-B-1 614874 weiterhin bekannte Zungenkontaktrelais stimmt mit dem oben erläuterten bekannten Relais im wesentlichen überein mit der Ausnahme, daß es sich hier nicht um ein gepoltes Relais handelt und die beiden Festkontakte nicht über einen Dauermagnet, sondern über einen unmagnetischen Zwischenkörper voneinander getrennt sind. Zwar wird in dieser Druckschrift betont, daß die einzelnen Kontakte stets den gleichen gegenseitigen Abstand voneinander aufweisen, doch betrifft dies den Abstand nebeneinanderliegender Kontakte und nicht, wie bei der Erfindung, den für das Schaltverhalten kritischen Abstand der jeweils gegenüberliegenden und mit einer Kontaktzunge einen Umschaltkontakt bildenden Festkontaktstücke.The tongue contact relay, which is also known from DE-B-1 614874, essentially corresponds to the known relay explained above, with the exception that it is not a polarized relay and the two fixed contacts do not have a permanent magnet but rather a non-magnetic intermediate body are separated. Although it is emphasized in this publication that the individual contacts are always at the same mutual distance from one another, this relates to the distance between adjacent contacts and not, as in the invention, the critical distance for the switching behavior of the opposite one another and which forms a changeover contact with a contact tongue Fixed contact pieces.

Der Erfindung liegt die Aufgabe zugrunde, ein gepoltes Zungenkontaktrelais anzugeben, bei dem ein gleichzeitiges Öffnen und Schließen sämtlicher Kontakte mit möglichst hoher Präzision gewährleistet ist.The invention has for its object to provide a polarized tongue contact relay, in which a simultaneous opening and closing of all contacts is ensured with the highest possible precision.

Diese Aufgabe wird durch die im Patentanspruch 1 gekennzeichneten Merkmale insofern gelöst, als alle für das Schaltverhalten wesentlichen Bauteile des Relais, nämlich die Kontaktzungen, die Festkontakte und die Spule, über ein einziges Bauteil, nämlich den Spulenkörper, unmittelbar zueinander positioniert und außerdem Maßnahmen getroffen sind, die sicherstellen, daß auch die nebeneinander liegenden Festkontakte der einzelnen Umschaltkontaktsysteme genau miteinander fluchten und den gleichen Luftspalt bezüglich des Dauermagnets aufweisen.This object is achieved by the features characterized in claim 1 insofar as all the components of the relay which are essential for the switching behavior, namely the contact tongues, the fixed contacts and the coil, are positioned directly with respect to one another via a single component, namely the coil former, and measures are also taken , which ensure that the fixed contacts of the individual changeover contact systems lying next to one another are exactly aligned and have the same air gap with respect to the permanent magnet.

Aus DE-B-2 723 220 ist es zwar bekannt, Polschuhe in Einschnitten eines Spulenkörpers zu positionieren, doch weist dieses Relais nur eine einzelne (an ihrem Ende geschlitzte) Kontaktzunge auf, die mit einem Festkontaktpaar zusammenarbeitet, so daß sich die der Erfindung zugrundeliegende Aufgabe dort nicht stellt.From DE-B-2 723 220 it is known to position pole pieces in incisions in a coil body, but this relay has only a single (slotted at its end) contact tongue, which cooperates with a fixed contact pair, so that the basis of the invention Task does not pose there.

Das gleiche gilt für das Relais nach DE-A-2 345 471, bei dem Polschuhe durch eine gemeinsame Isolierstoff-Teilummantelung zueinander positioniert, zu einer Einheit verbunden und durch Einschnitte in Spulenkörperflanschen gegenüber der Anordnung der Kontaktzunge positioniert sind. Auch hier handelt es sich wiederum um ein Relais mit einem einzigen Umschaltkontakt, bei dem die obengenannte Aufgabe nicht besteht.The same applies to the relay according to DE-A-2 345 471, in which pole shoes are positioned relative to one another by a common insulating partial sheathing, connected to form a unit and positioned by means of incisions in coil former flanges with respect to the arrangement of the contact tongue. Again, this is a relay with a single changeover contact, in which the above task does not exist.

Die Maßnahme des Anspruchs 2 sorgt dafür, daß die gewünschte Präzision der Kontaktbetätigung auch bei zweiteiligem Spulenkörper erreichbar ist, während die Maßnahme des Anspruchs 3 eine weitere Verbesserung in der Synchronizität der Kontaktbetätigung ergibt.The measure of claim 2 ensures that the desired precision of the contact actuation can be achieved even with a two-part coil body, while the measure of claim 3 results in a further improvement in the synchronicity of the contact actuation.

Die Erfindung wird nachstehend anhand der Zeichnungen näher erläutert. In den Zeichnungen zeigt

  • Fig. 1 einen Längsschnitt entlang der Mittelachse eines fertig-montierten Relais mit zwei parallel zueinander verlaufenden Kontaktzungen ;
  • Fig. 2a bis 2e eine Explosionsdarstellung, welche die in Fig. 1 geschnittenen Teile (mit Ausnahme der Relaiskappe) perspektivisch zeigt ; und
  • Fig. 3 ein Schaltschema zur synchronen Ansteuerung des Relais.
The invention is explained in more detail below with reference to the drawings. In the drawings shows
  • Fig. 1 shows a longitudinal section along the Mittelach se a fully assembled relay with two parallel contact tongues;
  • 2a to 2e an exploded view, which shows the parts cut in FIG. 1 (with the exception of the relay cap) in perspective; and
  • Fig. 3 is a circuit diagram for synchronous control of the relay.

Gemäss dem Ausführungsbeispiel nach Fig. 1 und 2 befindet sich ein Dauermagnet 1, vorzugsweise aus BaOFe, zwischen vier voneinander elektrisch isolierten Polschuhen 2a, 2b, 2c und 2d. Je ein Polschuhpaar ist entsprechend den Fig. 2c, 2d mit einem im Spritzverfahren geformten Isolierstoffteil 7a, 7b ummantelt, das auf seiner dem Magneten zugewandten Seite eine relativ dünne Schichtdicke d, und auf der Aussenseite eine wesentlich stärkere Schichtdicke d2 hat. Die Schichtdicke d, soll dünn sein, damit eine möglichst gute Ankoppelung zwischen Magnet und Polschuh besteht, sie soll aber andererseits nicht Null sein, weil sie nicht nur zu Isolationszwecken, sondern auch als magnetischer Luftspalt dient. Liegt nämlich ein Magnet ohne magnetischen Luftspalt an den Polschuhen direkt an, so ist zwar theoretisch eine optimale Koppelung gegeben, aber in der Praxis ist diese schon wegen der Unebenheiten des Magneten unterschiedlich, so dass die Justierung des Relais schwierig wird und dann meist nicht mehr automatisch erfolgen kann. Deshalb ist ein Luftspalt und ein entsprechend stärkerer Dauermagnet einem System ohne Luftspalt vorzuziehen. Ausserdem hat die Umspritzung noch den Vorteil, dass ein halbzylinderförmiges Profil (Fig. 2c) angeformt werden kann, mit dessen Hilfe sich Toleranzen der Polschuhe mit den daran befindlichen Festkontaktstücken bzw. Festkontakten 4a, 4b, 4c und 4d gegenüber den Führungsnuten 9a, 9b, 9c, 9d im Spulenkörper 10 und dessen Anlageflächen 20a, 20b ausgleichen lassen. Somit bleiben als den Kontaktabstand beeinflussende Toleranzen nur die der Dikke der Kontaktfedern 3a, 3b und die des im Spulenkörper 10 angeformten Abstandhalters 11, auf den sich die Enden der Festkontakte abstützen, übrig. Beide Toleranzen können unter 0,01 mm gehalten werden.According to the exemplary embodiment according to FIGS. 1 and 2, there is a permanent magnet 1, preferably made of BaOFe, between four pole shoes 2a, 2b, 2c and 2d which are electrically insulated from one another. According to FIGS. 2c, 2d, a pair of pole shoes is encased with an injection-molded insulating part 7a, 7b, which has a relatively thin layer thickness d on its side facing the magnet and a much thicker layer thickness d 2 on the outside. The layer thickness d should be thin so that there is the best possible coupling between the magnet and the pole piece, but on the other hand it should not be zero because it serves not only for insulation purposes but also as a magnetic air gap. If there is a magnet directly on the pole pieces without a magnetic air gap, there is theoretically an optimal coupling, but in practice this is different due to the unevenness of the magnet, so that the adjustment of the relay becomes difficult and then usually no longer automatic can be done. An air gap and a correspondingly stronger permanent magnet are therefore preferable to a system without an air gap. In addition, the extrusion coating has the advantage that a semi-cylindrical profile (FIG. 2c) can be formed, with the aid of which tolerances of the pole shoes with the fixed contact pieces or fixed contacts 4a, 4b, 4c and 4d relative to the guide grooves 9a, 9b, 9c, 9d in the bobbin 10 and its contact surfaces 20a, 20b. Thus, as tolerances influencing the contact spacing, only those of the thickness of the contact springs 3a, 3b and that of the spacer 11 formed in the coil body 10, on which the ends of the fixed contacts are supported, remain. Both tolerances can be kept below 0.01 mm.

Die Festkontakte liessen sich auch durch entsprechend abgekröpfte Polschuhe ersetzen ; zweckmässig ist es jedoch, sie separat herzustellen, weil sie dann wegen der erforderlichen Kontaktauflagen einer anderen Oberflächenbehandlung ausgesetzt werden können, als sie für die Polschuhe und deren Anschlüsse 8a, 8b, 8c, 8d geboten ist.The fixed contacts could also be replaced by appropriately cranked pole shoes; However, it is expedient to produce them separately, because they can then be subjected to a different surface treatment than is required for the pole shoes and their connections 8a, 8b, 8c, 8d because of the required contact conditions.

Die beiden parallel nebeneinander angeordneten Kontaktzungen sind vorzugsweise Zwecks Parallelführung mit einem Kunststoffteil 6 ummantelt. Dabei ist es gleichgültig, ob diese Ummantelung durch Ultraschallverschweissung zweier Plastikfolien oder durch Umspritzung erfolgt. Im Falle der Umspritzung könnten auch die Mittelkontaktanschlüsse 5a, 5b nach der Punktschweissung mit den Kontaktzungen 3a, 3b mit Kunststoff umspritzt werden, um die Sicherheit gegen Lösung der Verbindungsstelle, die besonders bei der Justierung beansprucht wird, zu erhöhen. Auch dieses zu einer Einheit (Fig. 2a) verbundene Teil wird in den Ausschnitten 9 des Spulenkörpers positioniert.The two contact tongues arranged parallel to one another are preferably covered with a plastic part 6 for the purpose of parallel guidance. It does not matter whether this sheathing is carried out by ultrasonically welding two plastic films or by extrusion coating. In the case of overmolding, the center contact connections 5a, 5b could also be extrusion-coated with plastic after the spot welding with the contact tongues 3a, 3b in order to increase the security against loosening of the connection point, which is particularly stressed during the adjustment. This part connected to a unit (FIG. 2a) is also positioned in the cutouts 9 of the coil body.

Der so montierte Relaisaufbau wird mit seinen Anschlüssen in die Durchbrüche 15g des Grundkörpers 15 (Fig.2e) eingeführt und kann nach Einsetzen des Dauermagneten 1 zwischen den beiden in den Spulenkörper 10 positionierten Polschuhpaaren (Fig. 2c und Fig. 2d) und nach der elektrischen Verbindung der Spulendrahtenden mit den im Grundkörper 15 befindlichen Spulenanschlüssen 15c, 15d bzw. 15e, 15f an der Verbindungsstelle der Kontaktzungen 3a, 3b mit den Mittelkontaktanschlüssen 5a, 5b justiert werden. Dafür ist es zweckmässig, eine ferromagnetische Kappe zu verwenden, die sich von der endgültigen Kappe 16 nur durch eine Öffnung unterscheidet, die Zugang zur Justierstelle gestattet. Der Grundkörper 15 besitzteine Schulter 15b, worauf sich die Kappe 16 stützt, sowie eine oder zwei Öffnungen 15a, die sowohl zur Füllung mit Schutzgas als auch zur Einführung von Vergussmasse 17 dient bzw. dienen.The relay assembly assembled in this way is inserted with its connections into the openings 15g of the base body 15 (FIG. 2e) and, after the permanent magnet 1 has been inserted, can be inserted between the two pairs of pole shoes (FIGS. 2c and 2d) positioned in the coil body 10 and after the electrical connection Connection of the coil wire ends with the coil connections 15c, 15d or 15e, 15f located in the base body 15 are adjusted at the connection point of the contact tongues 3a, 3b with the center contact connections 5a, 5b. For this purpose, it is expedient to use a ferromagnetic cap which differs from the final cap 16 only by an opening which allows access to the adjustment point. The base body 15 has a shoulder 15b, on which the cap 16 is supported, and one or two openings 15a, which serve or serve both for filling with protective gas and for introducing potting compound 17.

Die in Fig. gezeigte Schaltung 13 dient zur synchronen Kontaktbetätigung, auch bei an- bzw. abschwellender Erregerspannung, wobei ein in Serie zur Spule liegender Kondensator und ein IC mit einer Trigger- und Kippstufe gemäß der DE-A-2 747 607 vorgesehen sind. In diesem Falle wird die Kontaktzunge auf bistabiles Verhalten eingestellt. Die Triggerstufe schaltet erst bei einer vorgegebenen Spannung, die ausreicht, dass beide Umschaltkontakte schlagartig ansprechen. Dabei lädt sich der Kondensator auf und blockiert den Stromfluss durch die Spule. Ein monostabil eingestelltes Relais würde sofort wieder abfallen, während das bistabile Relais die Stellung so lange beibehält, bis die Versorgungsspannung unterbrochen wird und sich der Kondensator über die Spulenwicklung und die Kippstufe des IC entlädt und damit die Relaiskontakte in ihre Ausgangslage, ebenfalls schlagartig, zurückversetzt. Somit wird dem bistabil eingestellten Relais ein monostabiles Schaltverhalten eingeprägt, eine synchrone Betätigung beider Umschaltkontakte gewährleistet und ausserdem nur während des sehr kurzen Einschaltvorgangs von ca. 1 ms Ansteuerenergie benötigt.The circuit 13 shown in FIG. 1 is used for synchronous contact actuation, even when the excitation voltage increases or decreases, a capacitor in series with the coil and an IC with a trigger and flip-flop according to DE-A-2 747 607 being provided. In this case, the contact tongue is set to bistable behavior. The trigger stage only switches at a specified voltage that is sufficient for both changeover contacts to respond suddenly. The capacitor charges and blocks the flow of current through the coil. A relay set to monostable would drop off again immediately, while the bistable relay remained in this position until the supply voltage was interrupted and the capacitor discharged via the coil winding and the flip-flop of the IC, thus instantly returning the relay contacts to their starting position. Thus, the bistable relay is impressed with a monostable switching behavior, a synchronous actuation of both changeover contacts is guaranteed and, moreover, control energy is only required during the very short switch-on process of approx. 1 ms.

Claims (3)

1. Polarized reed contact relay comprising ferromagnetic contact reeds (3, 3a) which extend through the bobbin (10) approximately in the direction of the coil axis, which are supported at one end and electrically insulated from each other, which are positioned with respect to each other and interconnected to form a unit by means of a piece (6) of insulating material, and the free end of each of which forms a change-over contact with a pair of fixed contact pieces (4a...4d) which also consist of magnetic material and are positioned in the bobbin (10) in mutual alignment, wherein the fixed contact pieces (4a, 4b) of the said contact couples disposed on one side of the contact reeds (3a, 3b) are each provided with one of pole pieces (2a, 2b) positioned in a first common plane, and the fixed contact pieces (4c, 4d) of the said contact couples disposed on the other side of the contact reeds (3a, 3b) are each provided with one of pole pieces disposed in a second common plane, and wherein a permanent magnet (1) is disposed between the two pole piece planes, characterized in that two contact reeds (3a, 3b) are provided in the above arrangement, that the two pole pieces (2a, 2b ; 2c, 2d) disposed in the same plane and thus associated with different change-over contacts are positioned with respect to each other by a common partial encapsulation formed by a piece (7a, 7b) of insulating material and are interconnected to form a unit in being insulated from each other, and that the pole pieces (2a...2d) interconnected to form these units together with their fixed contact pieces (4a...4d) on the one hand, and the unit of the contact reeds (3a, 3b), on the other hand, have those regions of their terminal portions (8a...8d ; 5a, 5b) which are adjacent the pole piece or reed positioned in cut-outs (9a...9d ; 9) of the bobbin flanges.
2. The relay of claim 1, characterized in that the fixed contact pieces (4a...4d) abut at a spacer (11) outside their contacting area, the spacer defining the contact air gap and, in case of using a two- part bobbin, consisting of a punched or injection- molded plate of insulating plastics material disposed between the two bobbin halves.
3. The relay of claim 1 or 2, characterized in that a capacitor and an integrated element (13) are electrically connected to the coil terminals for the synchronous contact closure of both change-over contacts.
EP80101550A 1979-03-30 1980-03-24 Polarised relay having contact blades Expired EP0017129B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80101550T ATE5036T1 (en) 1979-03-30 1980-03-24 POLARIZED REED CONTACT RELAY.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3881679A JPS6055938B2 (en) 1979-03-30 1979-03-30 2 transfer lead type relay
JP38816/79 1979-03-30
JP75787/79 1979-06-15
JP7578779A JPS55166833A (en) 1979-06-15 1979-06-15 Multipolar reed relay

Publications (3)

Publication Number Publication Date
EP0017129A1 EP0017129A1 (en) 1980-10-15
EP0017129B1 EP0017129B1 (en) 1983-10-12
EP0017129B2 true EP0017129B2 (en) 1989-04-05

Family

ID=26378103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101550A Expired EP0017129B2 (en) 1979-03-30 1980-03-24 Polarised relay having contact blades

Country Status (4)

Country Link
US (1) US4311976A (en)
EP (1) EP0017129B2 (en)
CA (1) CA1128977A (en)
DE (4) DE2954352C2 (en)

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DE3217528C2 (en) * 1982-05-10 1986-04-03 Siemens AG, 1000 Berlin und 8000 München Contact arrangement for relays
DE3229696A1 (en) * 1982-08-10 1984-02-16 ANT Nachrichtentechnik GmbH, 7150 Backnang METHOD FOR THE SYNCHRONOUS TRANSFER OF FRAME-STRUCTURED DATA
DE3240184C1 (en) * 1982-10-29 1984-03-22 Siemens AG, 1000 Berlin und 8000 München Electromagnetic relay
DE3338198A1 (en) * 1983-10-20 1985-05-02 Siemens AG, 1000 Berlin und 8000 München ELECTROMAGNETIC RELAY AND METHOD FOR THE PRODUCTION THEREOF
DE3338208A1 (en) * 1983-10-20 1985-05-02 Siemens AG, 1000 Berlin und 8000 München ELECTROMAGNETIC RELAY AND METHOD FOR THE PRODUCTION THEREOF
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US4672344A (en) * 1985-04-19 1987-06-09 Siemens Aktiengesellschaft Polarized electromagnetic relay
US4912438A (en) * 1987-10-22 1990-03-27 Nec Corporation Electromagnetic relay
DE58905723D1 (en) * 1988-03-25 1993-11-04 Siemens Ag POLARIZED MULTICONTACT ELECTROMAGNETIC RELAY.
DE8906678U1 (en) * 1989-05-31 1990-09-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
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DE102010018755A1 (en) * 2010-04-29 2011-11-03 Kissling Elektrotechnik Gmbh Relay with integrated safety circuit
US10945336B2 (en) * 2018-06-13 2021-03-09 Te Connectivity Corporation Electronic device with relay mounted to substrate

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Also Published As

Publication number Publication date
DE2931409A1 (en) 1980-10-09
DE2954352C2 (en) 1984-12-13
EP0017129B1 (en) 1983-10-12
DE3065236D1 (en) 1983-11-17
DE2954150C2 (en) 1983-06-23
EP0017129A1 (en) 1980-10-15
CA1128977A (en) 1982-08-03
DE2931409C2 (en) 1990-05-10
US4311976A (en) 1982-01-19

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