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EP0126317B1 - Electromagnetic relay with pivoting armature - Google Patents

Electromagnetic relay with pivoting armature Download PDF

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Publication number
EP0126317B1
EP0126317B1 EP84104581A EP84104581A EP0126317B1 EP 0126317 B1 EP0126317 B1 EP 0126317B1 EP 84104581 A EP84104581 A EP 84104581A EP 84104581 A EP84104581 A EP 84104581A EP 0126317 B1 EP0126317 B1 EP 0126317B1
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EP
European Patent Office
Prior art keywords
armature
base body
relay
coil
bearing
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
EP84104581A
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German (de)
French (fr)
Other versions
EP0126317A1 (en
Inventor
Helmut Dipl.-Ing. Schedele (Fh)
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Siemens AG
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Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0126317A1 publication Critical patent/EP0126317A1/en
Application granted granted Critical
Publication of EP0126317B1 publication Critical patent/EP0126317B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2263—Polarised relays comprising rotatable armature, rotating around central axis perpendicular to the main plane of the armature

Definitions

  • the invention relates to an electromagnetic rotary armature relay with a rod-shaped armature passing through the coil body lengthways and movably mounted there about a central axis of rotation, with yokes arranged at both ends of the coil, forming working air gaps with the armature ends, and with contact springs which can be actuated by the armature and with interact in a base body anchored counter-contact elements.
  • Such a relay is known for example from US-A-3 211 858.
  • Such rotary armature relays have the advantage that they are very insensitive to external forces, such as shocks and vibrations. They are very suitable for larger contacts.
  • Polarized rotary anchor systems can be used particularly advantageously.
  • the contact is actuated via actuating elements. which are attached to the free ends of the armature and actuate the contact springs anchored in the base body.
  • the armature of the known relay is rotatably mounted on an assembly member and fastened to it by means of a welded-on holding strip.
  • the object of the invention is to design a rotary armature relay of the type mentioned in such a way that tolerances can be largely eliminated with simple manufacture and assembly of the individual parts, so that the operating values of the relay have little scatter.
  • the bobbin is formed by two individual bobbins arranged axially one behind the other, each carrying a winding, the position of which on the common base body is predetermined by means of contact surfaces correspondingly formed on the individual bobbin bodies and on the base body, and that in the space delimited by the mutually facing ends of the individual bobbins, by the base body and by a bearing plate bridging the two individual bobbins, a bearing element made of insulating material can be used for the armature penetrating the bearing element, on the bearing journal extending transversely to the coil axis are formed and which also extends transversely to the coil axis, but offset by 90 ° to the bearing pins, in which the contact-free ends of the contact springs are fastened.
  • the base body forms a pivot bearing for the armature.
  • the mating contact elements are also anchored in the base body, there are only very small tolerances between the armature and the center contact springs connected to the armature on the one hand and the functionally associated mating contact elements on the other hand.
  • the two individual bobbins are positioned on the base body and additionally connected to each other by the bearing plate for the armature. They do not cause tolerances that could impair the function of the armature and the contact elements.
  • the armature By dividing the coil body into two separately mountable individual coil bodies, it is possible to connect the armature to the bearing element before assembly, for example by overmolding, and also to fix the center contact springs to the armature by embedding them. With this embedding, the journals can also be formed with high precision.
  • tolerances can also be switched off by inserting the yokes into adjacent recesses in the base body, the spacing of which determines the length of the working air gap.
  • Pole spacers can also be formed on the individual bobbins above the working air gaps.
  • the relay shown in FIGS. 1 to 4 has a base body or base 1, in which counter-contact elements 2 and 3 are anchored with their connecting pins 2a and 3a and connecting elements 4 for center contact springs by injection.
  • base body 1 On the base body 1, two individual bobbins 5 and 6, each with a winding 7 or 8, are arranged offset to one another in the axial direction and positioned on contact shoulders 9 or contact surfaces 10 relative to the base body and to one another.
  • a beam rotating armature 12 extends approximately in the axial direction through the interior 11 of both coil forms, and is encapsulated in its central region with a bearing element 13.
  • This bearing element 13 and with it the armature 12 are mounted in bearing bushes 15 of the base body 1 on the one hand and a bearing plate 16 on the other hand via molded bearing pins 14.
  • the bearing plate 16 lies parallel to the base body 1 on the mutually facing flanges 5e and 6a of the two coil bodies 5 and 6 and at the same time positions these two coil bodies with respect to one another.
  • four central contact springs 17 are embedded in the bearing element 13 parallel to the beam anchor 12 (FIG. 5), which extend laterally from the two coils and each interact with a pair of mating contact elements 2 and 3.
  • the center contact springs 17 are each connected to a via a flexible conductor element 18 associated connector 4 connected in the base body 1.
  • a four-pole magnetized permanent magnet 19 or 20 is arranged above each of the two coil bodies 5 and 6, and a pair of angular yokes 21, 22 or 23 and 24 is coupled to the undersides thereof.
  • a horizontal section for example 21a and 22a, these yokes each lie on a pole of a permanent magnet, e.g. B. 19, while with vertical sections, such as 21 b and 22b (Fig. 4) each form working air gaps with one end of the armature 12.
  • the yokes are inserted with their vertical ends, for example 21b and 22b, into recesses 25 of the base body, so that a pole spacer 26 is formed between the pair of opposing yokes from the base body 1, which together with a pole spacer 27 molded onto the coil body exactly the width of the air gaps specifies.
  • a low-tolerance fine assembly of the armature bearing also results from the fact that the bearing plate 16 is initially loosely mounted with the armature, that after the permanent magnets have been magnetized, the armature can then bear against two diagonally opposed pole pieces by means of the permanent magnetic holding forces and then the bearing plate by gluing or by thermal deformation attached to the bobbin flanges 5a and 6a.
  • the shape-related dimensions "a of the bearing element 13 and" b of the coil formers 5 and 6 are dimensioned such that there is no penetration which could inhibit the rotary movement of the armature.
  • a flux guide plate 28 is arranged above the two permanent magnets 19 and 20.
  • the magnetic circuit of the relay can be set monostable or bistable by appropriate magnetization of the permanent magnet areas, as already described in DE-A-3 225 830.
  • the relay is closed by a housing cap 29 placed over the base body 1 and sealed from below with casting compound 30.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Valve Device For Special Equipments (AREA)

Description

Die Erfindung betrifft ein elektromagnetisches Drehankerrelais mit einem den Spulenkörper der Länge nach durchsetzenden und dort um eine mittlere Drehachse beweglich gelagerten, stabförmigen Anker, mit an beiden Enden der Spule angeordneten, mit den Ankerenden Arbeitsluftspalte bildenden Jochen sowie mit durch den Anker betätigbaren Kontaktfedern, welche mit in einem Grundkörper verankerten Gegenkontaktelementen zusammenwirken.The invention relates to an electromagnetic rotary armature relay with a rod-shaped armature passing through the coil body lengthways and movably mounted there about a central axis of rotation, with yokes arranged at both ends of the coil, forming working air gaps with the armature ends, and with contact springs which can be actuated by the armature and with interact in a base body anchored counter-contact elements.

Ein derartiges Relais ist beispielsweise aus der US-A-3 211 858 bekannt. Solche Drehankerrelais haben den Vorteil, daß sie gegenüber äußeren Kräften, wie Stößen und Erschütterungen, sehr unempfindlich sind. Sie eignen sich sehr gut für größere Kontaktbestückung. Besonders vorteilhaft lassen sich dabei polarisierte Drehankersysteme verwenden.Such a relay is known for example from US-A-3 211 858. Such rotary armature relays have the advantage that they are very insensitive to external forces, such as shocks and vibrations. They are very suitable for larger contacts. Polarized rotary anchor systems can be used particularly advantageously.

Bei dem bekannten Drehankerrelais mit innerhalb der Spule liegendem Anker erfolgt die Kontaktbetätigung über Betätigungselemente. die an den freien Enden des Ankers angebracht sind und die im Grundkörper verankerte Kontaktfedern betätigen. Der Anker des bekannten Relais ist drehbar an einem Montageglied gelagert und an diesem mittels eines angeschweißten Haltestreifens befestigt.In the known rotary armature relay with an armature located within the coil, the contact is actuated via actuating elements. which are attached to the free ends of the armature and actuate the contact springs anchored in the base body. The armature of the known relay is rotatably mounted on an assembly member and fastened to it by means of a welded-on holding strip.

Aufgabe der Erfindung ist es, ein Drehankerrelais der eingangs genannten Art so zu gestalten, daß bei einfacher Fertigung und Montage der Einzelteile Toleranzen weitgehend ausgeschaltet werden können, so daß die Betriebswerte des Relais eine geringe Streuung aufweisen.The object of the invention is to design a rotary armature relay of the type mentioned in such a way that tolerances can be largely eliminated with simple manufacture and assembly of the individual parts, so that the operating values of the relay have little scatter.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß der Spulenkörper durch zwei mit Abstand axial hintereinander angeordnete, jeweils eine Wicklung tragende Einzel-Spulenkörper gebildet ist, deren Lage auf dem gemeinsamen Grundkörper mittels an den Einzel-Spulenkörpern und an dem Grundkörper entsprechend ausgebildeten Anlageflächen vorgegeben ist, und daß in dem durch die einander zugewandten Enden der Einzel-Spulenkörper, durch den Grundkörper und durch eine die beiden Einzel-Spulenkörper überbrückende Lagerplatte umgrenzten Raum ein aus Isolierstoff bestehendes Lagerelement für den das Lagerelement durchdringenden Anker einsetzbar ist, an dem quer zur Spulenachse verlaufende Lagerzapfen ausgebildet sind und das sich ebenfalls quer zur Spulenachse, jedoch zu den Lagerzapfen um 90° versetzt, erstreckende Fortsätze aufweist, in denen die kontaktfreien Enden der Kontaktfedern befestigt sind.According to the invention, this object is achieved in that the bobbin is formed by two individual bobbins arranged axially one behind the other, each carrying a winding, the position of which on the common base body is predetermined by means of contact surfaces correspondingly formed on the individual bobbin bodies and on the base body, and that in the space delimited by the mutually facing ends of the individual bobbins, by the base body and by a bearing plate bridging the two individual bobbins, a bearing element made of insulating material can be used for the armature penetrating the bearing element, on the bearing journal extending transversely to the coil axis are formed and which also extends transversely to the coil axis, but offset by 90 ° to the bearing pins, in which the contact-free ends of the contact springs are fastened.

Bei dem Relais nach der Erfindung ist nicht ein einziger einteiliger Spulenkörper Träger für den Anker, sondern der Grundkörper bildet ein Drehlager für den Anker. Da aber auch die Gegenkontaktelemente im Grundkörper verankert sind, ergeben sich nur sehr geringe Toleranzen zwischen dem Anker und den mit dem Anker verbundenen Mittelkontaktfedern einerseits und den jeweils funktionsmäßig zugehörigen Gegenkontaktelementen andererseits. Die beiden Einzel-Spulenkörper sind für sich auf dem Grundkörper positioniert und zusätzlich durch die Lagerplatte für den Anker miteinander verbunden. Sie verursachen keine Toleranzen, die die Funktion des Ankers und der Kontaktelemente beeinträchtigen könnten.In the relay according to the invention, not a single, one-piece coil body is a carrier for the armature, but the base body forms a pivot bearing for the armature. However, since the mating contact elements are also anchored in the base body, there are only very small tolerances between the armature and the center contact springs connected to the armature on the one hand and the functionally associated mating contact elements on the other hand. The two individual bobbins are positioned on the base body and additionally connected to each other by the bearing plate for the armature. They do not cause tolerances that could impair the function of the armature and the contact elements.

Durch die Aufteilung des Spulenkörpers in zwei getrennt montierbare Einzel-Spulenkörper ist es möglich, den Anker bereits vor der Montage mit dem Lagerelement, beispielsweise durch Umspritzen, zu verbinden und dabei auch die Mittelkontaktfedern durch Einbetten lagegenau zum Anker zu befestigen. Bei diesem Einbetten können die Lagerzapfen ebenfalls mit hoher Präzision ausgeformt werden.By dividing the coil body into two separately mountable individual coil bodies, it is possible to connect the armature to the bearing element before assembly, for example by overmolding, and also to fix the center contact springs to the armature by embedding them. With this embedding, the journals can also be formed with high precision.

Weiter können auch zusätzlich Toleranzen dadurch ausgeschaltet werden, daß die Joche jeweils in benachbarte Ausnehmungen des Grundkörpers eingesteckt sind, deren Abstand die Länge der Arbeitsluftspalte bestimmt. Auch an den Einzel-Spulenkörpern können jeweils über den Arbeitsluftspalten Pol-Distanzstücke angeformt sein.In addition, tolerances can also be switched off by inserting the yokes into adjacent recesses in the base body, the spacing of which determines the length of the working air gap. Pole spacers can also be formed on the individual bobbins above the working air gaps.

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

  • Figur 1 bis 4 ein erfindungsgemäßes Drehankerrelais in verschiedenen Schnittansichten,
  • Figur 5 die Einzeldarstellung eines Ankers aus Fig. 1.
The invention is explained in more detail using an exemplary embodiment with reference to the drawing. Show it
  • 1 to 4 an inventive rotary armature relay in different sectional views,
  • 5 shows the individual representation of an anchor from FIG. 1.

Das in den Fig. 1 bis 4 dargestellte Relais besitzt einen Grundkörper oder Sockel 1, in welchem Gegenkontaktelemente 2 und 3 mit ihren Anschlußstiften 2a bzw. 3a sowie Anschlußelemente 4 für Mittelkontaktfedern durch Einspritzen verankert sind. Auf dem Grundkörper 1 sind in Axialrichtung zueinander versetzt zwei einzelne Spulenkörper 5 und 6 mit jeweils einer Wicklung 7 bzw. 8 angeordnet und an Anlageschultern 9 bzw. Auflageflächen 10 zum Grundkörper und zueinander positioniert. Durch den Innenraum 11 beider Spulenkörper erstreckt sich etwa in Axialrichtung ein Balkendrehanker 12, der in seinem Mittelbereich mit einem Lagerelement 13 umspritzt ist. Über angeformte Lagerzapfen 14 ist dieses Lagerelement 13 und mit ihm der Anker 12 in Lagerbuchsen 15 des Grundkörpers 1 einerseits und einer Lagerplatte 16 andererseits gelagert. Die Lagerplatte 16 liegt parallel zum Grundkörper 1 auf den einander zugewandten Flanschen 5e-und 6a der beiden Spulenkörper 5 und 6 auf und positioniert zugleich diese beiden Spulenkörper zueinander. In das Lagerelement 13 sind außerdem parallel zum Balkendrehanker 12 vier Mittelkontaktfedern 17 eingebettet (Fig. 5), welche sich seitlich von den beiden Spulen erstrecken und jeweils mit einem Paar von Gegenkontaktelementen 2 und 3 zusammenwirken. Über ein flexibles Leiterelement 18 sind die Mittelkontaktfedern 17 jeweils mit einem zugehörigen Anschlußelement 4 im Grundkörper 1 verbunden.The relay shown in FIGS. 1 to 4 has a base body or base 1, in which counter-contact elements 2 and 3 are anchored with their connecting pins 2a and 3a and connecting elements 4 for center contact springs by injection. On the base body 1, two individual bobbins 5 and 6, each with a winding 7 or 8, are arranged offset to one another in the axial direction and positioned on contact shoulders 9 or contact surfaces 10 relative to the base body and to one another. A beam rotating armature 12 extends approximately in the axial direction through the interior 11 of both coil forms, and is encapsulated in its central region with a bearing element 13. This bearing element 13 and with it the armature 12 are mounted in bearing bushes 15 of the base body 1 on the one hand and a bearing plate 16 on the other hand via molded bearing pins 14. The bearing plate 16 lies parallel to the base body 1 on the mutually facing flanges 5e and 6a of the two coil bodies 5 and 6 and at the same time positions these two coil bodies with respect to one another. In addition, four central contact springs 17 are embedded in the bearing element 13 parallel to the beam anchor 12 (FIG. 5), which extend laterally from the two coils and each interact with a pair of mating contact elements 2 and 3. The center contact springs 17 are each connected to a via a flexible conductor element 18 associated connector 4 connected in the base body 1.

Über jedem der beiden Spulenkörper 5 und 6 ist ein vierpolig aufmagnetisierter Dauermagnet 19 bzw. 20 angeordnet, an deren Unterseiten jeweils ein Paar von winkelförmigen Jochen 21, 22 bzw. 23 und 24 angekoppelt ist. Mit einem waagrechten Abschnitt, beispielsweise 21a und 22a, liegen diese Joche jeweils an einem Pol eines Dauermagneten, z. B. 19, an, während sie mit senkrechten Abschnitten, beispielsweise 21 b und 22b (Fig. 4) jeweils Arbeitsluftspalte mit einem Ende des Ankers 12 bilden. Die Joche sind mit ihren senkrechten Enden, beispielsweise 21b und 22b, in Ausnehmungen 25 des Grundkörpers eingesetzt, so daß zwischen den paarweise gegenüberstehenden Jochen vom Grundkörper 1 ein PolDistanzstück 26 gebildet wird, welches zusammen mit einem am Spulenkörper angeformten Poldistanzstück 27 die Breite der Luftspalte exakt festlegt. Damit ergibt sich eine exakte Zuordnung der Anlageflächen von Anker und Jochen einerseits und der Kontaktstellen der mit dem Anker verbundenen Mittelkontaktfedern 17 und der im Grundkörper verankerten Gegenkontaktelemente 2 und 3 andererseits.A four-pole magnetized permanent magnet 19 or 20 is arranged above each of the two coil bodies 5 and 6, and a pair of angular yokes 21, 22 or 23 and 24 is coupled to the undersides thereof. With a horizontal section, for example 21a and 22a, these yokes each lie on a pole of a permanent magnet, e.g. B. 19, while with vertical sections, such as 21 b and 22b (Fig. 4) each form working air gaps with one end of the armature 12. The yokes are inserted with their vertical ends, for example 21b and 22b, into recesses 25 of the base body, so that a pole spacer 26 is formed between the pair of opposing yokes from the base body 1, which together with a pole spacer 27 molded onto the coil body exactly the width of the air gaps specifies. This results in an exact assignment of the contact surfaces of the armature and yokes on the one hand and the contact points of the central contact springs 17 connected to the armature and the mating contact elements 2 and 3 anchored in the base body on the other hand.

Eine toleranzarme Feinmontage der Ankerlagerung ergibt sich außerdem dadurch, daß die Lagerplatte 16 zunächst lose mit dem Anker montiert wird, daß man dann nach Aufmagnetisieren der Dauermagnete den Anker an zwei diagonal gegenüberstehenden Polschuhen durch die dauermagnetischen Haltekräfte anliegen läßt und danach die Lagerplatte durch Kleben oder durch thermisches Verformen an den Spulenkörperflanschen 5a und 6a befestigt. Die formgebundenen Maße « a des Lagerelementes 13 und « b der Spulenkörper 5 und 6 sind so bemessen, daß keine Durchdringung entsteht, die die Drehbewegung des Ankers hemmen könnte.A low-tolerance fine assembly of the armature bearing also results from the fact that the bearing plate 16 is initially loosely mounted with the armature, that after the permanent magnets have been magnetized, the armature can then bear against two diagonally opposed pole pieces by means of the permanent magnetic holding forces and then the bearing plate by gluing or by thermal deformation attached to the bobbin flanges 5a and 6a. The shape-related dimensions "a of the bearing element 13 and" b of the coil formers 5 and 6 are dimensioned such that there is no penetration which could inhibit the rotary movement of the armature.

Über den beiden Dauermagneten 19 und 20 ist eine Flußführungsplatte 28 angeordnet. Im übrigen läßt sich der Magnetkreis des Relais durch entsprechende Magnetisierung der Dauermagnetbereiche monostabil oder bistabil einstellen, wie dies bereits in der DE-A-3 225 830 beschrieben ist. Das Relais wird durch eine über den Grundkörper 1 gestülpte Gehäusekappe 29 verschlossen und von unten mit Vergußmasse 30 abgedichtet.A flux guide plate 28 is arranged above the two permanent magnets 19 and 20. In addition, the magnetic circuit of the relay can be set monostable or bistable by appropriate magnetization of the permanent magnet areas, as already described in DE-A-3 225 830. The relay is closed by a housing cap 29 placed over the base body 1 and sealed from below with casting compound 30.

Claims (5)

1. An electromagnetic relay having a pivoting armature comprising a rod-shaped armature (12) which penetrates lengthwise into the coil body (5, 6) and is there supported so as to be pivotable about a central pivot axis, yokes (21, 22. 23, 24) arranged at both ends of the coil (5. 6, 7, 8) and which form working air gaps with the armature ends, and contact springs (17) which are operable by means of the armature and which co-operate with counter-contact elements (2, 3) which are anchored in a base body (1),.characterised in that the coil body (5, 6) is forme&6y two individual coil bodies (5, 6) which are arranged to be axially consecutive but spaced apart and which in each case carry a winding (7, 8) and whose position on the common base body (1) is determined by means of corresponding contact surfaces (9, 10) formed on the individual coil bodies (5, 6) and the base body (1) ; and that into the space which is delimited by the mutually facing ends of the individual coil bodies (5, 6), by the base body (1) and by a bearing plate (16) which bridges the two individual coil bodies (5, 6), a bearing element (13) for the armature (12) which penetrates into the bearing element (13) can be inserted, which bearing element is made of insulating material and on which are formed bearing pins (14) extending transversely to the coil axis, and which bearing element has extensions which likewise extend transversely to the coil axis, but are offset by 90° in relation to the bearing pins, in which extensions the contact-free ends of the contact springs (17) are secured.
2. A relay as claimed in Claim 1, characterised in that the armature (12) and the contact-free ends of the contact springs (17) are embedded in the insulating material of the bearing element (13) whilst simultaneously forming the bearing pins (14) by moulding.
3. A relay as claimed in Claim 1 or Claim 2, characterised in that the yokes (21, 22, 23, 24) are in each case inserted into adjacent recesses (25) of the base body (1), whose spacing determines the length of the working air gap.
4. A relay as claimed in one of Claims 1 to 3, characterised in that pole spacing pieces (27) are formed in each case on the individual coil bodies (5, 6) above the working air gaps.
5. A relay as claimed in one of Claims 1 to 4, characterised in that the bearing plate (16) is stuck to the mutually facing flanges of the two individual coil bodies (5, 6).
EP84104581A 1983-04-27 1984-04-24 Electromagnetic relay with pivoting armature Expired EP0126317B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833315168 DE3315168A1 (en) 1983-04-27 1983-04-27 ELECTROMAGNETIC SWIVEL RELAY
DE3315168 1983-04-27

Publications (2)

Publication Number Publication Date
EP0126317A1 EP0126317A1 (en) 1984-11-28
EP0126317B1 true EP0126317B1 (en) 1986-12-03

Family

ID=6197436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104581A Expired EP0126317B1 (en) 1983-04-27 1984-04-24 Electromagnetic relay with pivoting armature

Country Status (4)

Country Link
US (1) US4527138A (en)
EP (1) EP0126317B1 (en)
JP (1) JPS59207535A (en)
DE (2) DE3315168A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3211858A (en) * 1963-06-21 1965-10-12 Babcock Electronics Corp Latching relay and electromagnetic actuator therefor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB151912A (en) * 1919-06-19 1920-09-20 George Cora Cummings Improved armature mounting for electro-magnetic apparatus
US2731527A (en) * 1952-11-04 1956-01-17 Gen Railway Signal Co Electromagnetic relays
FR1354433A (en) * 1963-04-04 1964-03-06 Thomson Houston Comp Francaise Electromagnetic relay
FR1599391A (en) * 1968-12-11 1970-07-15
DE2318812B1 (en) * 1973-04-13 1974-01-10 Hans Sauer Electromagnetic relay
DE3225830C2 (en) * 1982-07-09 1986-10-09 Siemens AG, 1000 Berlin und 8000 München Electromagnetic rotating armature relay

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3211858A (en) * 1963-06-21 1965-10-12 Babcock Electronics Corp Latching relay and electromagnetic actuator therefor

Also Published As

Publication number Publication date
US4527138A (en) 1985-07-02
DE3461574D1 (en) 1987-01-15
JPS59207535A (en) 1984-11-24
DE3315168A1 (en) 1984-10-31
EP0126317A1 (en) 1984-11-28

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