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EP0320686A2 - Electromagnetic switchgear - Google Patents

Electromagnetic switchgear Download PDF

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Publication number
EP0320686A2
EP0320686A2 EP88119809A EP88119809A EP0320686A2 EP 0320686 A2 EP0320686 A2 EP 0320686A2 EP 88119809 A EP88119809 A EP 88119809A EP 88119809 A EP88119809 A EP 88119809A EP 0320686 A2 EP0320686 A2 EP 0320686A2
Authority
EP
European Patent Office
Prior art keywords
switching device
contact
contact slide
lever
lifting armature
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.)
Granted
Application number
EP88119809A
Other languages
German (de)
French (fr)
Other versions
EP0320686B1 (en
EP0320686A3 (en
Inventor
Bernhard Dietrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
SDS RELAIS 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, SDS RELAIS AG filed Critical Siemens AG
Priority to AT88119809T priority Critical patent/ATE103105T1/en
Publication of EP0320686A2 publication Critical patent/EP0320686A2/en
Publication of EP0320686A3 publication Critical patent/EP0320686A3/en
Application granted granted Critical
Publication of EP0320686B1 publication Critical patent/EP0320686B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/64Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/643Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rotating or pivoting movement
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/16Magnetic circuit arrangements
    • H01H50/18Movable parts of magnetic circuits, e.g. armature
    • H01H50/24Parts rotatable or rockable outside coil
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00Electromagnetic relays
    • H01H51/22Polarised relays
    • H01H51/2209Polarised relays with rectilinearly movable armature

Definitions

  • An electromagnetic switching device of the type specified in the preamble of claim 1 is known from DE-C-3 417 891.
  • a contact slide is coupled to the lifting armature of a magnetic drive, which can be moved parallel thereto, via deflection levers which are pivotably mounted on pins provided on a housing base.
  • the magnetic drive is first assembled for itself, whereupon the reversing levers are attached with their two arms to the ends of the lifting armature and contact slide.
  • the arrangement put together in this way is then installed in the housing base, bores provided in the deflection levers simultaneously having to be pushed onto the bearing journals.
  • This assembly process is a relatively difficult step due to the fact that the arrangement mentioned is not rigidly positioned relative to one another before it is finally installed in the housing element. It is complicated by the fact that the distance between the bearing journals with the distance between the bores in the bellcranks does not exactly match, because in addition to unavoidable manufacturing tolerances, especially if the journals are used as separate components in the housing base, a bearing clearance must be present between the ends of the lifting armature and contact slide on the one hand and the ends of the bellcranks on the other hand. A particular difficulty arises when the magnetic drive contains a permanent magnet to achieve a polarized switching behavior, which accidentally pulls the lifting armature into one or the other end position.
  • the invention has for its object disadvantages, such as they occur at least partially in comparable switching devices according to the prior art.
  • a more specific task can be seen in designing a switching device of the type described in the introduction in such a way that it can be assembled more easily and more quickly.
  • the parallelogram linkage formed according to claim 5 maintains the advantage known from the prior art of low-friction mounting of all movable parts even in the invention.
  • the openings provided in the arms cause the bellcranks to be independent simply snap on from the position of the lifting anchor.
  • the further measure of claim 6 in connection with the inventive concept leads to a simple possibility of having a biasing spring act to achieve a monostable switching behavior, the arrangement of the spring according to claim 7 being particularly space-saving.
  • the electromagnetic switching device shown in the drawing is housed in a housing composed of a base 10 and a housing cap 11.
  • a plurality of switching chambers are formed, each of which contains two fixed contacts 12 arranged in alignment with one another.
  • These fixed contacts 12 have, as can be seen in FIG. 2, lower connections 13 projecting through the base 10 and upper connections 14 projecting through the housing cap 11.
  • the lower connections 13 serve for insertion into a circuit board (not shown), while the upper connections 14 are provided for further connections and are arranged in a recessed area 15 on the top of the housing cap 11.
  • a contact slide 16 is provided with a plurality of bridge contacts 17b which are supported by leaf springs 17a and which each cooperate with a pair of fixed contacts 12 aligned with one another.
  • the fixed contacts 12 are arranged in such a way and the movable contacts 17b are pretensioned in such a way that they form a total of four normally closed contacts with a double break and one make contact also with a double break.
  • a magnetic drive 18 which has two coils 20 each wound on a coil former 19, a permanent magnet 21 arranged between them, and a central bore in the Includes coil formers 19 and in the permanent magnet 21 penetrating and in the axial direction of the coils reciprocating armature 22 and two yoke plates 23 extending over the outer sides of the coil formers.
  • the lifting armature 22 is fastened on a guide rod 24 which extends coaxially to the coils 20 and which ends extend through openings left free by the two yoke plates 23.
  • the reciprocating movement of the lifting armature 22 is transmitted to the contact slide 16 via two deflection levers 25, 26.
  • Both arms of each deflection lever 25, 26 each have an opening at the end, which is penetrated by a part of the respective stepped outer end of the guide rod 24 or the relevant end section 27, 28 of the contact slide 16.
  • the rest of the stepped end of the guide rod 24 or the rest of the end section 27, 28 of the contact slide 16 is supported according to FIG. 2 in steps 24a, 24b and 28a, 28b formed by the dashed area on the magnetic drive 18 or contact slide 16 facing ends of the bellcranks 25, 26.
  • two guide parts 30, which are aligned with one another along the pivot axis 29, are arranged at a distance, somewhat larger than the width of the yoke plates 32, and the recesses 31 provided in the deflection lever 26 are as to the side edge of the deflection lever 26 Open cutouts designed so that the bellcrank according to FIG. 2 up and down through the broad sides of the guide members 30 and to the left or right through the inner narrow side of the guide members 30 are fixed in the correct position.
  • Each bell crank is thereby guided in both directions along the pivot axis 29. Dodging the bellcranks 25, 26 to the outside is prevented by bearing surfaces 32 which are integrally formed on the base 10. These bearing surfaces 32 each have a convex curvature facing the relevant deflection lever 25, 26 in order to keep the bearing friction as low as possible in the manner of a cutting edge bearing. The distance between the bearing surfaces 32 is dimensioned such that the outer surfaces of the guide parts 30 can be guided past when the magnetic drive 18 is inserted.
  • the sectional plane II-II shown in FIG. 1 runs in the plane of contact between the right bearing surface 32 and the guide part 30.
  • the deflection levers 25, 26, the lifting armature 22 and the contact slide 16 together form a parallelogram linkage mounted on the two pivot axes 29, which converts the reciprocating movement of the lifting armature 22 into an opposite reciprocating movement of the contact slide 16 running parallel thereto.
  • all of the openings in the deflection levers 25, 26 are designed to be slightly wedge-shaped.
  • a leaf spring 33 is also shown, which acts with its free end on the end section 27 of the contact slider 16 protruding through the cutout in the deflection lever 25 and biases it into its right-hand end position according to FIG. 1. With its other half, the leaf spring 33 is inserted into the base 10 in such a way that it lies on the outside of a projection 34, which forms the outer bearing surface 32 for the bell crank 25 and projects upward from the inner surface of the base 10, but within the housing cap 11.
  • the magnetic drive 18 is first assembled from the components 19 to 24 and then joined together with the two bellcranks 25, 26 and the contact slide 16 to form an assembly unit. Since the deflection levers 25, 26 are already guided and held in this state on a part of the magnetic drive 18, namely on the guide parts 30 provided on the bobbin 19 and therefore also hold the contact slide 16 in a defined manner, this assembly unit can be handled effortlessly and in the base 10 insert in the intended manner so that the outer ends of the guide parts 30 between the bearing surfaces 32 formed on the projections 34 of the base 10 can be inserted. In the inserted state, the deflection levers 25, 26 are then also secured against evasion to the outside by the bearing surfaces 32. Finally, if provided, the leaf spring 33 is inserted so that the switching device is ready for operation after being closed by means of the housing cap 11.
  • the right-hand coil 20 is excited to switch over from the rest position shown in FIG. 1, so that the lifting armature 22 is pulled into the right-hand end position according to FIG Bias of the leaf spring 33 is shifted to the left.
  • the parallelogram linkage is returned by the leaf spring 33 to the rest position shown in FIG. 1. If the leaf spring 33 is not provided, this return takes place by excitation of the coil 20 on the left in accordance with FIG To apply electricity.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Electronic Switches (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Vehicle Body Suspensions (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Valve Device For Special Equipments (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

An electromagnetic switching device comprises a solenoid actuator 18 including an armature 22, the reciprocating movement of which is converted by a pair of levers 25, 26 to a reciprocating counter-movement of a contact slider 16 extending parallel thereto. The contact slider 16 is provided with bridge contacts 17b which cooperate with stationary contacts 12 fixed within a base 10. Outwardly projecting guide members 30 which are provided on the solenoid actuator 18 and extend through recesses 31 formed in the levers 25, 26 serve to support the latter. Upon assembly, the solenoid actuator 18 is equipped with the levers 25, 26 and the contact slider 16 to form an assembly unit which is inserted as it is into the base 10. In this assembly unit, the levers 25, 26 are retained in position so that the assembly step can be performed easily and rapidly without any mounting aids.

Description

Ein elektromagnetisches Schaltgerät der im Oberbegriff des Anspruchs 1 angegebenen Gattung ist aus DE-C-3 417 891 be­kannt. Dort ist ein Kontaktschieber mit dem parallel dazu be­wegbaren Hubanker eines Magnetantriebs über Umlenkhebel gekop­pelt, die auf an einem Gehäusesockel vorgesehenen Zapfen schwenkbar gelagert sind. Bei der Montage wird zunächst der Magnetantrieb für sich zusammengebaut, woraufhin die Umlenkhe­bel jeweils mit ihren beiden Armen auf die Enden von Hubanker und Kontaktschieber aufgesteckt werden. Die so zusammenge­stellte Anordnung wird dann in den Gehäusesockel eingebaut, wobei in den Umlenkhebeln vorgesehene Bohrungen gleichzeitig auf die Lagerzapfen aufgesteckt werden müssen.An electromagnetic switching device of the type specified in the preamble of claim 1 is known from DE-C-3 417 891. There, a contact slide is coupled to the lifting armature of a magnetic drive, which can be moved parallel thereto, via deflection levers which are pivotably mounted on pins provided on a housing base. During assembly, the magnetic drive is first assembled for itself, whereupon the reversing levers are attached with their two arms to the ends of the lifting armature and contact slide. The arrangement put together in this way is then installed in the housing base, bores provided in the deflection levers simultaneously having to be pushed onto the bearing journals.

Dieser Montagevorgang stellt aufgrund der Tatsache, daß die genannte Anordnung vor ihrem endgültigen Einbau in das Ge­häuseelement nicht starr zueinander positioniert ist, einen verhältnismäßig diffizilen Arbeitsschritt dar. Er wird dadurch erschwert, daß der Abstand zwischen den Lagerzapfen mit dem Abstand zwischen den Bohrungen in den Umlenkhebeln nicht genau übereinstimmt, weil zusätzlich zu unvermeidbaren Fertigungsto­leranzen, insbesondere wenn die Lagerzapfen als separate Bau­teile in den Gehäusesockel eingesetzt sind, zwischen den Enden von Hubanker und Kontaktschieber einerseits und den Enden der Umlenkhebel andererseits ein Lagerspiel vorhanden sein muß. Eine besondere Schwierigkeit ergibt sich dann, wenn der Ma­gnetantrieb zur Erzielung eines polarisierten Schaltverhaltens einen Dauermagnet enthält, der den Hubanker zufällig in seine eine oder andere Endstellung zieht.This assembly process is a relatively difficult step due to the fact that the arrangement mentioned is not rigidly positioned relative to one another before it is finally installed in the housing element. It is complicated by the fact that the distance between the bearing journals with the distance between the bores in the bellcranks does not exactly match, because in addition to unavoidable manufacturing tolerances, especially if the journals are used as separate components in the housing base, a bearing clearance must be present between the ends of the lifting armature and contact slide on the one hand and the ends of the bellcranks on the other hand. A particular difficulty arises when the magnetic drive contains a permanent magnet to achieve a polarized switching behavior, which accidentally pulls the lifting armature into one or the other end position.

Aus allen diesen Gründen gestaltet sich bei dem bekannten Schaltgerät die Montage schwierig und zeitaufwendig und ist häufig ohne Montagehilfen nicht durchführbar.For all these reasons, assembly is difficult and time-consuming in the known switching device and is often not feasible without assembly aids.

Der Erfindung liegt die Aufgabe zugrunde, Nachteile, wie sie bei vergleichbaren Schaltgeräten nach dem Stand der Tech­nik auftreten, mindestens teilweise zu beseitigen. Eine spezi­ellere Aufgabe kann darin gesehen werden, ein Schaltgerät der eingangs bezeichneten Gattung so zu gestalten, daß es sich einfacher und rascher montieren läßt.The invention has for its object disadvantages, such as they occur at least partially in comparable switching devices according to the prior art. A more specific task can be seen in designing a switching device of the type described in the introduction in such a way that it can be assembled more easily and more quickly.

Die erfindungsgemäße Lösung dieser Aufgabe ist im Kenn­zeichenteil des Anspruchs 1 angegeben. Danach ist der bzw. sind die Umlenkhebel in Richtung ihrer Schwenkachsen, d. h. in derjenigen Richtung, in der die aus dem Magnetantrieb, dem Kontaktschieber und dem oder den Umlenkhebeln zunächst zusam­mengefügte Montageeinheit in das Gehäuseelement eingesetzt wird, an dem Magnetantrieb festgelegt, so daß die Bauteile der Montageeinheit bereits in definierter Position zueinander ge­halten sind und bei dem Einsetzvorgang kein Hineinsuchen in eine Lagerstelle der bekannten Art erforderlich ist. Vielmehr läßt sich die genannte Montageeinheit insgesamt einfach so einfügen, daß die von dem Gehäuseelement gebildete Lagerfläche an der Außenseite des Führungsteils für den (betreffenden) Um­lenkhebel zu liegen kommt. Ein derartiger Einsetzvorgang ist unabhängig von der momentanen Stellung des Kontaktschiebers einfach und ohne Hilfsmittel von Hand durchführbar.The inventive solution to this problem is specified in the characterizing part of claim 1. Then the or the lever in the direction of their pivot axes, ie. H. in the direction in which the assembly unit initially inserted from the magnetic drive, the contact slide and the deflection lever or levers is inserted into the housing element, so that the components of the assembly unit are already held in a defined position with respect to one another and none during the insertion process Search in a depository of the known type is required. Rather, the assembly unit mentioned can be simply inserted overall so that the bearing surface formed by the housing element comes to rest on the outside of the guide part for the (relevant) bellcrank. Such an insertion process is simple and can be carried out by hand, regardless of the current position of the contact slide.

Die Weiterbildung der Erfindung nach Anspruch 2 dient ei­ner möglichst reibungsarmen Lagerung trotz Fehlens eines La­gerzapfens. In der Ausgestaltung nach Anspruch 3 ergibt sich eine kippfreie Führung des Umlenkhebels, wobei dieser an der betreffenden Baugruppe hinsichtlich sämtlicher Freiheitsgrade mit Ausnahme eines Ausweichens nach außen geführt ist, das seinerseits durch die Lagerfläche des Gehäuseelements verhin­dert wird. Die Maßnahme des Anspruchs 4 führt zu einer für die Stabilität der oben genannten Montageeinheit günstigen Fixie­rung der Umlenkhebel und führt damit auch zu einer problemlo­sen Aufnahme der Montageeinheit während des Einsetzvorgangs in den Sockel.The development of the invention according to claim 2 serves as low-friction storage as possible despite the lack of a journal. In the embodiment according to claim 3, there is a tilt-free guidance of the deflection lever, which is guided on the relevant assembly with respect to all degrees of freedom with the exception of evasion, which in turn is prevented by the bearing surface of the housing element. The measure of claim 4 leads to a fixation of the deflection levers which is favorable for the stability of the above-mentioned assembly unit and thus also leads to a problem-free reception of the assembly unit during the insertion process in the base.

Durch das gemäß Anspruch 5 gebildete Parallelogrammge­stänge wird der aus dem Stand der Technik bekannte Vorteil einer reibungsarmen Lagerung aller bewegbaren Teile auch bei der Erfindung beibehalten. Dabei bewirken die in den Armen vorgesehenen Durchbrüche, daß sich die Umlenkhebel unabhängig von der Stellung des Hubankers einfach aufstecken lassen. Die weitere Maßnahme des Anspruchs 6 führt in Verbindung mit dem Erfindungskonzept zu einer einfachen Möglichkeit, eine Vor­spannfeder zur Erzielung eines monostabilen Schaltverhaltens wirken zu lassen, wobei die Anordnung der Feder nach Anspruch 7 besonders platzsparend ist.The parallelogram linkage formed according to claim 5 maintains the advantage known from the prior art of low-friction mounting of all movable parts even in the invention. The openings provided in the arms cause the bellcranks to be independent simply snap on from the position of the lifting anchor. The further measure of claim 6 in connection with the inventive concept leads to a simple possibility of having a biasing spring act to achieve a monostable switching behavior, the arrangement of the spring according to claim 7 being particularly space-saving.

Ein bevorzugtes Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung näher erläutert, in der

  • Figur 1 einen Längsschnitt durch ein elektromagnetisches Schaltgerät längs der Linie I-I der Figur 2 und
  • Figur 2 einen Querschnitt längs der Linie II-II nach Figur 1 zeigt.
A preferred embodiment of the invention is explained below with reference to the drawing in which
  • 1 shows a longitudinal section through an electromagnetic switching device along the line II of Figure 2 and
  • Figure 2 shows a cross section along the line II-II of Figure 1.

Das in der Zeichnung dargestellte elektromagnetische Schaltgerät ist in einem aus einem Sockel 10 und einer Gehäu­sekappe 11 zusammengesetzten Gehäuse untergebracht. In dem in Figur 1 unten gezeigten Bereich des Sockels 10 sind mehrere Schaltkammern ausgebildet, deren jede zwei miteinander fluch­tend angeordnete Festkontakte 12 enthält. Diese Festkontakte 12 weisen, wie aus Figur 2 hervorgeht, durch den Sockel 10 hindurchragende untere Anschlüsse 13 sowie durch die Gehäuse­kappe 11 hindurchragende obere Anschlüsse 14 auf. Die unteren Anschlüsse 13 dienen zum Einstecken in eine (nicht gezeigte) Schaltungsplatte, während die oberen Anschlüsse 14 für weitere Verbindungen vorgesehen sind und in einem zurückspringenden Bereich 15 an der Oberseite der Gehäusekappe 11 angeordnet sind.The electromagnetic switching device shown in the drawing is housed in a housing composed of a base 10 and a housing cap 11. In the area of the base 10 shown at the bottom in FIG. 1, a plurality of switching chambers are formed, each of which contains two fixed contacts 12 arranged in alignment with one another. These fixed contacts 12 have, as can be seen in FIG. 2, lower connections 13 projecting through the base 10 and upper connections 14 projecting through the housing cap 11. The lower connections 13 serve for insertion into a circuit board (not shown), while the upper connections 14 are provided for further connections and are arranged in a recessed area 15 on the top of the housing cap 11.

Ein Kontaktschieber 16 ist mit mehreren über Blattfedern 17a abgestützten Brückenkontakten 17b versehen, die mit je einem Paar von miteinander fluchtenden Festkontakten 12 zusam­menarbeiten. In dem Ausführungsbeispiel nach Figur 1 sind die Festkontakte 12 derart angeordnet und die bewegbaren Kontakte 17b derart vorgespannt, daß sie insgesamt vier Ruhekontakte mit Doppelunterbrechung und einen Arbeitskontakt ebenfalls mit Doppelunterbrechung bilden.A contact slide 16 is provided with a plurality of bridge contacts 17b which are supported by leaf springs 17a and which each cooperate with a pair of fixed contacts 12 aligned with one another. In the exemplary embodiment according to FIG. 1, the fixed contacts 12 are arranged in such a way and the movable contacts 17b are pretensioned in such a way that they form a total of four normally closed contacts with a double break and one make contact also with a double break.

In dem in Figur 1 oben gezeigten Bereich des Gehäuses ist ein Magnetantrieb 18 untergebracht, der zwei jeweils auf einen Spulenkörper 19 gewickelte Spulen 20, einen dazwischen ange­ordneten Dauermagnet 21, einen eine zentrische Bohrung in den Spulenkörpern 19 und im Dauermagnet 21 durchsetzenden und in Axialrichtung der Spulen hin- und herbewegbaren Hubanker 22 sowie zwei über die Außenseiten der Spulenkörper verlaufende Jochbleche 23 umfaßt. Der Hubanker 22 ist auf einer koaxial zu den Spulen 20 verlaufenden Führungsstange 24 befestigt, die mit ihren Enden durch von den beiden Jochblechen 23 freigelas­sene Öffnungen verläuft.In the area of the housing shown in FIG. 1 above, a magnetic drive 18 is accommodated, which has two coils 20 each wound on a coil former 19, a permanent magnet 21 arranged between them, and a central bore in the Includes coil formers 19 and in the permanent magnet 21 penetrating and in the axial direction of the coils reciprocating armature 22 and two yoke plates 23 extending over the outer sides of the coil formers. The lifting armature 22 is fastened on a guide rod 24 which extends coaxially to the coils 20 and which ends extend through openings left free by the two yoke plates 23.

Die Hin- und Herbewegung des Hubankers 22 wird über zwei Umlenkhebel 25, 26 auf den Kontaktschieber 16 übertragen. Bei­de Arme jedes Umlenkhebels 25, 26 weisen jeweils am Ende einen Durchbruch auf, der von einem Teil des betreffenden, stufig abgesetzten äußeren Endes der Führungsstange 24 bzw. des be­treffenden Endabschnitts 27, 28 des Kontaktschiebers 16 durch­setzt wird. Der Rest des stufig abgesetzten Endes der Füh­rungsstange 24 bzw. der Rest des Endabschnittes 27, 28 des Kontaktschiebers 16 stützt sich gemäß Fig. 2 in im gestrichel­ten Bereich gebildeten Stufen 24a, 24b bzw. 28a, 28b an den dem Magnetantrieb 18 bzw. Kontaktschieber 16 zugewandten Enden der Umlenkhebel 25, 26 ab.The reciprocating movement of the lifting armature 22 is transmitted to the contact slide 16 via two deflection levers 25, 26. Both arms of each deflection lever 25, 26 each have an opening at the end, which is penetrated by a part of the respective stepped outer end of the guide rod 24 or the relevant end section 27, 28 of the contact slide 16. The rest of the stepped end of the guide rod 24 or the rest of the end section 27, 28 of the contact slide 16 is supported according to FIG. 2 in steps 24a, 24b and 28a, 28b formed by the dashed area on the magnetic drive 18 or contact slide 16 facing ends of the bellcranks 25, 26.

Zur schwenkbaren Lagerung der Umlenkhebel 25, 26 um Schwenkachsen, die senkrecht zur Zeichenebene der Figur 1 ver­laufen und von denen eine in Figur 2 mit 29 bezeichnet ist, dienen gemäß Figur 1 am Spulenkörper 19 angesetzte, nach außen vorspringende, etwa quaderförmige Führungsteile 30, zwischen denen das untere Jochblech 23 eingeschoben ist und die Ausspa­rungen 31 in den Führungshebeln 25, 26 durchsetzen. Gemäß Figur 2 sind auf jeder Seite des unteren Jochblechs 23 zwei längs der Schwenkachse 29 miteinander fluchtende Führungsteile 30 in Abstand, etwas größer als die Breite der Jochbleche 32, voneinander angeordnet, und die im Umlenkhebel 26 vorgesehenen Aussparungen 31 sind als zur Seitenkante des Umlenkhebels 26 hin offene Ausschnitte derart ausgeführt, daß die Umlenkhebel gemäß Fig. 2 nach oben und unten hin durch die Breitseiten der Führungsteile 30 und nach links bzw. rechts durch die innen­liegende Schmalseite der Führungsteile 30 lagerichtig fixiert werden.For the pivotable mounting of the deflection levers 25, 26 about pivot axes that run perpendicular to the plane of the drawing in FIG. 1 and one of which is designated 29 in FIG. 2, according to FIG. 1, outwardly projecting, approximately cuboid-shaped guide parts 30 are used between the which the lower yoke plate 23 is inserted and the recesses 31 in the guide levers 25, 26 pass through. According to FIG. 2, on each side of the lower yoke plate 23, two guide parts 30, which are aligned with one another along the pivot axis 29, are arranged at a distance, somewhat larger than the width of the yoke plates 32, and the recesses 31 provided in the deflection lever 26 are as to the side edge of the deflection lever 26 Open cutouts designed so that the bellcrank according to FIG. 2 up and down through the broad sides of the guide members 30 and to the left or right through the inner narrow side of the guide members 30 are fixed in the correct position.

Jeder Umlenkhebel ist dadurch in beiden Richtungen längs der Schwenkachse 29 geführt. Ein Ausweichen der Umlenkhebel 25, 26 nach außen wird durch Lagerflächen 32 verhindert, die am Sockel 10 angeformt sind. Diese Lagerflächen 32 weisen je­weils eine dem betreffenden Umlenkhebel 25, 26 zugewandte kon­vexe Wölbung auf, um die Lagerreibung in der Art eines Schnei­denlagers möglichst gering zu halten. Der Abstand zwischen den Lagerflächen 32 ist so bemessen, daß beim Einsetzen des Ma­gnetantriebs 18 die Außenflächen der Führungsteile 30 vorbei­geführt werden können. Die in Fig. 1 eingezeichnete Schnitt­ebene II-II verläuft in der Berührungsebene zwischen der rech­ten Lagerfläche 32 und dem Führungsteil 30.Each bell crank is thereby guided in both directions along the pivot axis 29. Dodging the bellcranks 25, 26 to the outside is prevented by bearing surfaces 32 which are integrally formed on the base 10. These bearing surfaces 32 each have a convex curvature facing the relevant deflection lever 25, 26 in order to keep the bearing friction as low as possible in the manner of a cutting edge bearing. The distance between the bearing surfaces 32 is dimensioned such that the outer surfaces of the guide parts 30 can be guided past when the magnetic drive 18 is inserted. The sectional plane II-II shown in FIG. 1 runs in the plane of contact between the right bearing surface 32 and the guide part 30.

Die Umlenkhebel 25, 26, der Hubanker 22 und der Kontakt­schieber 16 bilden miteinander ein an den beiden Schwenkachsen 29 gelagertes Parallelogrammgestänge, das die Hin- und Herbe­wegung des Hubankers 22 in eine gegenläufige Hin- und Herbewe­gung des parallel dazu verlaufenden Kontaktschiebers 16 um­setzt. Um die freie Bewegbarkeit dieses Parallelogrammgestän­ges nicht zu beeinträchtigen, sind sämtliche Durchbrüche in den Umlenkhebeln 25, 26 leicht keilförmig gestaltet.The deflection levers 25, 26, the lifting armature 22 and the contact slide 16 together form a parallelogram linkage mounted on the two pivot axes 29, which converts the reciprocating movement of the lifting armature 22 into an opposite reciprocating movement of the contact slide 16 running parallel thereto. In order not to impair the free movement of this parallelogram linkage, all of the openings in the deflection levers 25, 26 are designed to be slightly wedge-shaped.

In Figur 1 ist ferner eine Blattfeder 33 gezeigt, die mit ihrem freien Ende auf den durch die Aussparung in dem Umlenk­hebel 25 hindurchragenden Endabschnitt 27 des Kontaktschiebers 16 einwirkt und diesen in seine gemäß Figur 1 rechte Endstel­lung vorspannt. Mit ihrer anderen Hälfte ist die Blattfeder 33 derart in den Sockel 10 eingelegt, daß sie auf der Außenseite einer die äußere Lagerfläche 32 für den Umlenkhebel 25 bilden­den, von der Innenfläche des Sockels 10 nach oben ragenden An­formung 34, jedoch innerhalb der Gehäusekappe 11 liegt.In FIG. 1, a leaf spring 33 is also shown, which acts with its free end on the end section 27 of the contact slider 16 protruding through the cutout in the deflection lever 25 and biases it into its right-hand end position according to FIG. 1. With its other half, the leaf spring 33 is inserted into the base 10 in such a way that it lies on the outside of a projection 34, which forms the outer bearing surface 32 for the bell crank 25 and projects upward from the inner surface of the base 10, but within the housing cap 11.

Zur Montage wird zunächst der Magnetantrieb 18 aus den Bauteilen 19 bis 24 zusammengesetzt und dann mit den beiden Umlenkhebeln 25, 26 und dem Kontaktschieber 16 zu einer Monta­geeinheit zusammengefügt. Da die Umlenkhebel 25, 26 bereits in diesem Zustand an einem Teil des Magnetantriebs 18, nämlich an den am Spulenkörper 19 vorgesehenen Führungsteilen 30 geführt und gehalten sind und daher auch den Kontaktschieber 16 defi­niert halten, läßt sich diese Montageeinheit mühelos handhaben und in den Sockel 10 in der vorgesehenen Weise so einsetzen, daß die äußeren Enden der Führungsteile 30 zwischen die an den Anformungen 34 des Sockels 10 ausgebildeten Lagerflächen 32 eingefügt werden können. Im eingesetzten Zustand sind dann die Umlenkhebel 25, 26 durch die Lagerflächen 32 auch gegen ein Ausweichen nach außen gesichert. Abschließend wird, soweit vorgesehen, die Blattfeder 33 eingesetzt, so daß das Schalt­gerät nach Verschließen mittels der Gehäusekappe 11 betriebs­fertig ist.For assembly, the magnetic drive 18 is first assembled from the components 19 to 24 and then joined together with the two bellcranks 25, 26 and the contact slide 16 to form an assembly unit. Since the deflection levers 25, 26 are already guided and held in this state on a part of the magnetic drive 18, namely on the guide parts 30 provided on the bobbin 19 and therefore also hold the contact slide 16 in a defined manner, this assembly unit can be handled effortlessly and in the base 10 insert in the intended manner so that the outer ends of the guide parts 30 between the bearing surfaces 32 formed on the projections 34 of the base 10 can be inserted. In the inserted state, the deflection levers 25, 26 are then also secured against evasion to the outside by the bearing surfaces 32. Finally, if provided, the leaf spring 33 is inserted so that the switching device is ready for operation after being closed by means of the housing cap 11.

Beim Betrieb wird zum Umschalten aus der in Figur 1 ge­zeigten Ruhestellung die rechte Spule 20 erregt, so daß der Hubanker 22 in die gemäß Figur 1 rechte Endstellung gezogen wird, wodurch die Umlenkhebel 25, 26 um ihre Schwenkachsen 29 verschwenkt und der Kontaktschieber 16 gegen die Vorspannung der Blattfeder 33 nach links verschoben wird. Beim Abfallen der Spule 20 wird das Parallelogrammgestänge von der Blattfe­der 33 wieder in die in Figur 1 gezeigte Ruhestellung zurück­geführt. Ist die Blattfeder 33 nicht vorgesehen, so erfolgt diese Rückführung durch Erregung der gemäß Figur 1 linken Spu­le 20. Anstelle der Erregung nur jeweils einer Spule ist es auch möglich, beide Spulen gleichzeitig, aber für die beiden Bewegungsrichtungen des Hubankers 22 in entgegengesetzten Richtungen, mit Strom zu beaufschlagen.During operation, the right-hand coil 20 is excited to switch over from the rest position shown in FIG. 1, so that the lifting armature 22 is pulled into the right-hand end position according to FIG Bias of the leaf spring 33 is shifted to the left. When the coil 20 falls off, the parallelogram linkage is returned by the leaf spring 33 to the rest position shown in FIG. 1. If the leaf spring 33 is not provided, this return takes place by excitation of the coil 20 on the left in accordance with FIG To apply electricity.

Claims (7)

1. Elektromagnetisches Schaltgerät, umfassend eine Kontaktanordnung mit mindestens einem in einem Ge­häuseelement (10) angeordneten Festkontakt (12) und einem in das Gehäuseelement eingesetzten Kontaktschieber (16), der einen relativ zu dem Festkontakt (12) bewegbaren Kontakt (17b) trägt,
einen in das Gehäuseelement (10) eingesetzten Magnetan­trieb (18), der einen Spulenkörper (19), wenigstens eine Spule (20) und einen zur Bewegungsrichtung des Kontaktschiebers (16) im wesentlichen parallel bewegbaren Hubanker (22) aufweist, und
mindestens einen zweiarmigen, um eine feste Lagerstelle schwenkbaren Umlenkhebel (25, 26), dessen einer Arm mit einem Ende des Kontaktschiebers (16) und dessen anderer Arm mit einem Ende des Hubankers (23) gekoppelt ist,
dadurch gekennzeichnet, daß die Lagerstelle für den Um­lenkhebel (25, 26) mindestens eine an der Außenseite des Ma­gnetantriebs (18) im wesentlichen parallel zur Bewegungsrich­tung des Hubankers (22) herausragendes, eine Aussparung (31) im Umlenkhebel (25, 26) durchsetzendes Führungsteil (30) und eine an dem Gehäuseelement (10) vorgesehene, den Umlenkhebel (25, 26) an seiner Außenfläche im Bereich der Aussparung (31) abstützende Lagerfläche (32) umfaßt.
1. Electromagnetic switching device comprising a contact arrangement with at least one fixed contact (12) arranged in a housing element (10) and a contact slide (16) inserted into the housing element, which carries a contact (17b) movable relative to the fixed contact (12),
a magnetic drive (18) inserted into the housing element (10), which has a coil body (19), at least one coil (20) and a lifting armature (22) which can be moved essentially parallel to the direction of movement of the contact slide (16), and
at least one two-armed reversing lever (25, 26) which can be pivoted about a fixed bearing, one arm of which is coupled to one end of the contact slide (16) and the other arm of which is coupled to one end of the lifting armature (23),
characterized in that the bearing point for the deflection lever (25, 26) has at least one guide part projecting on the outside of the magnetic drive (18) essentially parallel to the direction of movement of the lifting armature (22) and passing through a recess (31) in the deflection lever (25, 26) (30) and a bearing surface (32) provided on the housing element (10) and supporting the deflection lever (25, 26) on its outer surface in the region of the recess (31).
2. Schaltgerät nach Anspruch 1, dadurch gekennzeichnet, daß die dem Umlenkhebel (25, 26) zugewandte Lagerfläche (32) in der Art eines Schneidenlagers ausgebildet ist, bei dem die Schneide durch eine konvexe Wölbung oder prismatisch ausgebil­det ist.2. Switching device according to claim 1, characterized in that the deflection lever (25, 26) facing bearing surface (32) in the type of a cutting edge bearing is formed, in which the cutting edge is formed by a convex curvature or prismatic. 3. Schaltgerät nach Anspruch 1 oder 2, dadurch gekennzeich­net, daß das Führungsteil (30) und die Aussparung (31) in Richtung der Schwenkachse (29) des Umlenkhebels (25, 26) läng­lich gestaltet sind.3. Switching device according to claim 1 or 2, characterized in that the guide part (30) and the recess (31) in the direction of the pivot axis (29) of the bell crank (25, 26) are elongated. 4. Schaltgerät nach einem der Ansprüche 1 bis 3, dadurch ge­kennzeichnet, daß der Umlenkhebel (25, 26) zwei zu gegenüber­liegenden Seitenflächen hin offene Aussparungen (31) aufweist, deren jede ein Führungsteil (30) durchsetzt.4. Switching device according to one of claims 1 to 3, characterized in that the deflection lever (25, 26) has two recesses (31) open to opposite side surfaces, each of which passes through a guide part (30). 5. Schaltgerät nach einem der Ansprüche 1 bis 4, dadurch ge­kennzeichnet, daß zwei Umlenkhebel (25, 26) an gegenüberlie­genden Seiten des Magnetantriebs (18) angeordnet sind, die mit dem Kontaktschieber (16) und dem Hubanker (22) ein Parallelo­grammgestänge bilden, wobei die stufig ausgebildeten Enden von Kontaktschieber (16) und Hubanker (22) jeweilige Durchbrüche in den Armen der beiden Umlenkhebel (25, 26) durchsetzen und die Stufen (24a, 24b, 28a, 28b) der Enden von Kontaktschieber (16) und Hubanker (22) sich auf den Umlenkhebeln (25, 26) ab­stützen und die Wirkverbindung des Parallelogrammgestänges bilden.5. Switching device according to one of claims 1 to 4, characterized in that two bellcranks (25, 26) are arranged on opposite sides of the magnetic drive (18) which form a parallelogram linkage with the contact slide (16) and the lifting armature (22), wherein the stepped ends of the contact slide (16) and lifting armature (22) penetrate respective openings in the arms of the two bellcranks (25, 26) and the steps (24a, 24b, 28a, 28b) of the ends of the contact slide (16) and lifting armature (22) are supported on the deflection levers (25, 26) and form the operative connection of the parallelogram linkage. 6. Schaltgerät nach Anspruch 5, gekennzeichnet durch eine den Kontaktschieber (16) in eine Endstellung vorspannende Fe­ der (33), die sich auf der vom Magnetantrieb (18) abgewandten Seite eines Umlenkhebels (25) in dem Gehäuseelement (10) ab­stützt und an den betreffenden Enden des Umlenkhebels (25) ab­stützt oder an dem betreffenden, durch den Durchbruch im Um­lenkhebel (25) hindurchragenden Ende (27) des Kontaktschiebers (16) oder des Hubankers (22) angreift.6. Switching device according to claim 5, characterized by a Fe the contact slide (16) in an end position biasing the (33), which is supported on the side of a deflecting lever (25) facing away from the magnetic drive (18) in the housing element (10) and is supported on the relevant ends of the deflecting lever (25) or on the relevant one, through the opening in the deflecting lever ( 25) protruding end (27) of the contact slide (16) or the lifting armature (22). 7. Schaltgerät nach Anspruch 6, dadurch gekennzeichnet, daß die Feder als Blattfeder (33) ausgebildet ist, die so in das Gehäuseelement (10) eingefügt ist, daß ihr festes Ende auf der Außenseite einer die Lagerfläche (32) für den Umlenkhebel (25) bildenden Anformung (34) liegt.7. Switching device according to claim 6, characterized in that the spring is designed as a leaf spring (33) which is inserted into the housing element (10) such that its fixed end on the outside of the bearing surface (32) for the bell crank (25th ) forming molding (34).
EP88119809A 1987-12-18 1988-11-28 Electromagnetic switchgear Expired - Lifetime EP0320686B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88119809T ATE103105T1 (en) 1987-12-18 1988-11-28 ELECTROMAGNETIC SWITCHING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3743122A DE3743122C1 (en) 1987-12-18 1987-12-18 Electromagnetic switchgear
DE3743122 1987-12-18

Publications (3)

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EP0320686A2 true EP0320686A2 (en) 1989-06-21
EP0320686A3 EP0320686A3 (en) 1990-07-25
EP0320686B1 EP0320686B1 (en) 1994-03-16

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ID=6343005

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EP88119809A Expired - Lifetime EP0320686B1 (en) 1987-12-18 1988-11-28 Electromagnetic switchgear

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US (1) US4922216A (en)
EP (1) EP0320686B1 (en)
JP (1) JPH0693342B2 (en)
AT (1) ATE103105T1 (en)
AU (1) AU595771B2 (en)
CA (1) CA1299619C (en)
DE (2) DE3743122C1 (en)
ES (1) ES2050144T3 (en)

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WO1996017366A1 (en) * 1994-11-30 1996-06-06 Siemens Aktiengesellschaft Electromagnet switch
EP0844636A2 (en) * 1996-11-25 1998-05-27 Eaton Corporation Electromagnetically operated electric switching apparatus
WO2011003751A1 (en) * 2009-07-09 2011-01-13 Siemens Aktiengesellschaft Power switch having integrated trigger and drive unit

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DE4300594A1 (en) * 1993-01-13 1994-07-14 Hengstler Bauelemente Safety relay with positively driven contact set and monostable drive
DE19738372A1 (en) * 1997-09-03 1999-03-04 Abb Patent Gmbh Electromagnetic actuator for a switch
DE19957805B4 (en) * 1999-12-01 2005-07-28 Tyco Electronics Logistics Ag Electrical switching device
DE10104438B4 (en) * 2001-02-01 2007-06-14 Stiebel Eltron Gmbh & Co. Kg Multipolar safety switch with a pressure sensor
JP5024340B2 (en) * 2009-08-20 2012-09-12 富士電機機器制御株式会社 Magnetic contactor
US8564386B2 (en) 2011-01-18 2013-10-22 Tyco Electronics Corporation Electrical switching device
US8222981B1 (en) * 2011-01-18 2012-07-17 Tyco Electronics Corporation Electrical switching device
CN103828012A (en) * 2011-07-29 2014-05-28 Abb技术股份公司 Magnetic actuator with rotatable armature
JP6631068B2 (en) * 2015-07-27 2020-01-15 オムロン株式会社 Contact mechanism and electromagnetic relay using the same

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996017366A1 (en) * 1994-11-30 1996-06-06 Siemens Aktiengesellschaft Electromagnet switch
EP0844636A2 (en) * 1996-11-25 1998-05-27 Eaton Corporation Electromagnetically operated electric switching apparatus
EP0844636A3 (en) * 1996-11-25 1999-03-03 Eaton Corporation Electromagnetically operated electric switching apparatus
WO2011003751A1 (en) * 2009-07-09 2011-01-13 Siemens Aktiengesellschaft Power switch having integrated trigger and drive unit
CN102473538A (en) * 2009-07-09 2012-05-23 西门子公司 Power switch having integrated trigger and drive unit
US8638183B2 (en) 2009-07-09 2014-01-28 Siemens Aktiengesellschaft Power switch having integrated trigger and drive unit
CN102473538B (en) * 2009-07-09 2015-06-03 西门子公司 Power switch having integrated trigger and drive unit

Also Published As

Publication number Publication date
DE3888479D1 (en) 1994-04-21
ATE103105T1 (en) 1994-04-15
EP0320686B1 (en) 1994-03-16
AU595771B2 (en) 1990-04-05
DE3743122C1 (en) 1989-02-16
JPH01231236A (en) 1989-09-14
ES2050144T3 (en) 1994-05-16
US4922216A (en) 1990-05-01
CA1299619C (en) 1992-04-28
AU2680088A (en) 1989-06-22
EP0320686A3 (en) 1990-07-25
JPH0693342B2 (en) 1994-11-16

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