EP0515729B1 - Electromagnetic switch apparatus, particularly a contactor - Google Patents
Electromagnetic switch apparatus, particularly a contactor Download PDFInfo
- Publication number
- EP0515729B1 EP0515729B1 EP91119117A EP91119117A EP0515729B1 EP 0515729 B1 EP0515729 B1 EP 0515729B1 EP 91119117 A EP91119117 A EP 91119117A EP 91119117 A EP91119117 A EP 91119117A EP 0515729 B1 EP0515729 B1 EP 0515729B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- contact carrier
- transmission lever
- contact
- switch apparatus
- 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 - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 230000005284 excitation Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H50/041—Details concerning assembly of relays
- H01H50/045—Details particular to contactors
Definitions
- the present invention relates to an electromagnetic switching device, in particular a contactor with a switching magnet accommodated in a housing, with fixed contact pieces fastened in the housing and with movable contact pieces attached to a contact carrier, which can be brought into and out of engagement with the armature of the switching magnet, and with at least one effective translation lever between the armature of the switching magnet and the contact carrier which is guided in the housing of the switching device in the stroke direction of the armature.
- an electromagnetic switching device of the type mentioned is known.
- the traction force curve of the magnet is adapted to the force requirement curve of the contact system in that the movement of the armature is transmitted to the contact system by means of a curved path.
- the cam track is arranged along the actuating end of a transmission lever which transmits the magnetic force to the contact system and reinforces it.
- the armature of the electromagnet pushes the actuating end of the transmission lever perpendicular to the stroke direction of the armature when the electromagnet is tightened via the cam track.
- the contact system which can be actuated by this rectangularly angled transmission lever, which is fixed in the knee region, is brought into the closed position.
- the contact pieces of the switching device are opened after the excitation voltage of the electromagnet is interrupted by the return spring of the electromagnetic switching device acting on the contact system, but only after the transmission lever has been released.
- the translation lever is supported in the switched-on position of the switching device and also at the beginning of a switching-off movement with a very flat area of the cam track on the armature.
- the speed of interruption of the contact pieces also depends on any additional elements that do not separate the armature from the transmission lever and are not mentioned in the description.
- Another disadvantage of this electromagnetic switching device is that the cam track must be designed very precisely and with a correspondingly high outlay in order to achieve the desired contact piece movement.
- the displacement forces of the transmission lever provided with the cam track act perpendicular to the stroke direction of the armature.
- Anchor guide have the desired accuracy of the translation lever movement, which in turn is associated with costs.
- This electromagnetic switching device also takes up a lot of space, in particular the coupling point between the transmission lever and the contact system.
- the assembly of the switchgear is also complicated and involves significant costs.
- the object of the present invention is to develop an electromagnetic switching device of the type mentioned at the outset, which consists of parts which are suitable for simple automatic assembly and which enable a compact, space-saving arrangement, which functions reliably in any position and is economically advantageous.
- the translation lever is pivotally and displaceably supported with its one end on the stationary housing and with its other end on the contact carrier at least in the stroke direction of the armature in the plane of movement of the translation lever, and that the central region of the translation lever is rotatably mounted on the armature and is guided in the stroke direction of the armature and that at least one spring pushing the armature away from the contact carrier is present between the contact carrier and the armature displaceably guided thereon in the stroke direction.
- the transmission lever with its central region is only rotatably fastened to the armature and with its two ends is displaceably and pivotably supported, the parts of the switching device can be assembled by simply plugging one into the other.
- the armature can be moved on the contact carrier in a space-saving manner.
- the spring lying between the contact carrier and the displaceable armature ensures that the switching device functions independently of the position and that the two ends of the transmission lever rest constantly on the supporting surfaces supporting them under spring pressure.
- the central region of the transmission lever which is rotatably mounted on the armature, is advantageously guided in a guide and stop piece that is movable with the contact carrier in the stroke direction of the armature. Because the central region of the transmission lever is not guided in the housing, but rather in a guide and stop piece that is movable with the contact carrier, larger tolerances are required between the contact carrier and the housing, which require less complicated assembly.
- the guide and stop piece can consist of an angled piece provided with a guide and stop slot and fastened to the contact carrier by means of a snap connection.
- the end of the guide and stop slot facing away from the contact carrier serves as a stop for the anchor and prevents the anchor from falling out of the contact carrier during assembly or disassembly.
- An angle piece that can be fastened by means of a snap connection enables simple automatic assembly.
- the translation lever can be provided at least at one end with a rounded shoe which can be pivoted and displaced on its bearing surface. Since the transmission lever with its two ends only has to be pivotally and slidably supported, it is advantageous to release this slidable and pivotable support with a shoe.
- the shoe advantageously consists of plastic, the plastic having good sliding properties on the support surface.
- the shoe can be fastened on the transmission lever by means of a snap connection, as a result of which the shoe can be easily assembled.
- a translation lever is advantageously arranged on each of the two sides of the armature facing away from one another, the armature being displaceably guided in the contact carrier. This space-saving arrangement prevents the armature and the contact carrier from jamming during the lifting movements.
- the two transmission levers advantageously engage at two diagonally lying points on the contact carrier. This measure in turn serves to prevent jamming of the contact carrier during the switching movements.
- FIG. 1 shows the elevation of an electromagnetic switching device, which is called a contactor in this example, in a schematic representation, partly in section.
- Fixed contact pieces 2 which are also clearly visible in FIG. 2, are fastened in the housing 1.
- Movable contact pieces 4, which can be brought into and out of engagement with the fixed contact pieces 2, are attached to a contact carrier 3, which is displaceably guided in the housing 1.
- the contact carrier 3 extends to the lower half of the housing 1, where a switching magnet with a stationary core 6 carrying an excitation winding 5 and an armature 7 is accommodated.
- the armature 7 is slidably guided in the contact carrier 3 with a bolt 8 in a slot 9, as can be seen in FIG.
- two springs 10 are inserted, which press the armature 7 away from the contact carrier 3 in the stroke direction of the armature 7.
- a transmission lever 11 is provided between the armature 7 and the contact carrier 3.
- the translation lever 11 rests with its one end 12 on the housing 1 and with its other end 13 on the contact carrier 3.
- Both on the housing 1 and on the contact carrier 3 there are support surfaces for the ends 12, 13 of the transmission lever 11 which pivot and shift on these support surfaces during switching movements.
- the contact surfaces are made of plastic, but can also be made of a suitable metal.
- the transmission lever 11 is rotatably supported with its central region on a bolt 14 attached to the armature 7. The translation between the switching path of the contact carrier 3 and the stroke of the armature 7 is given by the ratio of the lever arms.
- the distance between the support points of the two ends 12, 13 of the transmission lever 11 and, on the other hand, the distance between the bolt 14 on the armature 7 and the stationary support point of the end 12 of the transmission lever 11 must be taken into account.
- the armature 7 takes along the central region of the transmission lever 11, which is fixed at one end 12, via the bolt 14.
- the other end 13 of the translation lever 11 presses the contact carrier 3 with the movable contact pieces 4 into the switched-on position.
- the spring 10 lying between the armature 7 and the contact carrier 3 and also the return spring 15 of the contact carrier 3 are thereby compressed.
- the contact carrier 3 and the attached movable contact pieces 4 are brought unhindered into the switched-off position by the return spring 15.
- the springs 10 push the armature 7 away from the contact carrier 3, so that the two ends 12, 13 of the translation lever 11 mounted on the armature 7 and their contact surfaces on the contact carrier 3 as well as on the housing 1 remain in contact and the armature 7 its intended Position in the contact carrier 3 assumes.
- the contact carrier 3, which is loaded by the return spring 15, is supported in the switched-off position of the contactor by an existing stop on the housing 1.
- FIGS. 3 and 4 show the elevation or the side view of the guide and stop piece 16 consisting of an angle piece. This plastic angle piece is provided at one end with a fork-shaped part which is fastened by snap connection in a U-shaped groove on the contact carrier 3. This type of attachment is particularly suitable for automatic assembly.
- FIGS. 5 and 6 show the elevation or the side elevation of a shoe 17.
- the shoe 17 is fastened by snap connection to the end 12, 13 of the flat transmission lever 11.
- the shoe 17 has two expandable side parts which are closed off with hooks and can be seen in FIG.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Push-Button Switches (AREA)
- Switches With Compound Operations (AREA)
- Keying Circuit Devices (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Relay Circuits (AREA)
- Gear-Shifting Mechanisms (AREA)
- Control Of Electric Motors In General (AREA)
- Mechanisms For Operating Contacts (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein elektromagnetisches Schaltgerät, insbesondere Schütz mit einem in einem Gehäuse untergebrachten Schaltmagneten, mit im Gehäuse befestigten festen Kontaktstücken und mit mit diesen durch den Anker des Schaltmagneten in und ausser Eingriff bringbaren, an einem Kontaktträger angebrachten, beweglichen Kontaktstücken und mit mindestens einem zwischen dem Anker des Schaltmagneten und dem im Gehäuse des Schaltgerätes in Hubrichtung des Ankers verschiebbar geführten Kontaktträger wirksamen Uebersetzungshebel.The present invention relates to an electromagnetic switching device, in particular a contactor with a switching magnet accommodated in a housing, with fixed contact pieces fastened in the housing and with movable contact pieces attached to a contact carrier, which can be brought into and out of engagement with the armature of the switching magnet, and with at least one effective translation lever between the armature of the switching magnet and the contact carrier which is guided in the housing of the switching device in the stroke direction of the armature.
Aus der DE-AS 1.237.667 ist ein elektromagnetisches Schaltgerät der eingangs erwähnten Art bekannt. Bei diesem Schaltgerät ist die Zugkraftkurve des Magneten an die Kraftbedarfskurve des Kontaktsystems dadurch angepasst, dass die Bewegung des Ankers durch eine Kurvenbahn auf das Kontaktsystem übertragen wird. Die Kurvenbahn ist längs dem Betätigungsende eines die Magnetkraft auf das Kontaktsystem übertragenden und diese verstärkenden Uebersetzungshebels angeordnet. Der Anker des Elektromagneten schiebt über die Kurvenbahn das Betätigungsende des Uebersetzungshebels beim Anziehen des Elektromagneten senkrecht zur Hubrichtung des Ankers. Das durch diesen rechteckig abgewinkelten, im Kniebereich ortsfest gelagerten Uebersetzungshebel betätigbare Kontaktsystem wird so in die Schliesstellung gebracht. Die Oeffnung der Kontaktstücke des Schaltgerätes erfolgt nach Unterbrechung der Erregerspannung des Elektromagneten durch die auf das Kontaktsystem wirkende Rückstellfeder des elektromagnetischen Schlatgerätes aber erst nach Freigabe des Uebersetzungshebels. Der Uebersetzungshebel stützt sich in der eingeschalteten Stellung des Schaltgerätes und auch am Anfang einer Ausschaltbewegung mit einem sehr flachen Bereich der Kurvenbahn auf den Anker. Somit hängt die Unterbrechungsgeschwindigkeit der Kontaktstücke auch von allfälligen, den Anker vom Uebersetzungshebel trennenden, zusätzlichen, in der Beschreibung nicht erwähnten Elemeten ab. Ein weiterer Nachteil dieses elektromagnetischen Schaltgerätes besteht darin, dass die Kurvenbahn sehr genau und mit entsprechend hohem Aufwand ausgebildet werden muss, um die gewünschte Kontaktstückbewegung zu erreichen. Ausserdem wirken die Verschiebekräfte des mit der Kurvenbahn versehenen Uebersetzungshebels senkrecht auf die Hubrichtung des Ankers. Aus diesem Grunde muss auch die Ankerführung über die gewünschte Genauigkeit der Bewegung des Uebersetzungshebels verfügen, was wiederum mit Kosten verbunden ist. Dieses elektromagnetische Schaltgerät braucht ausserdem auch viel Platz, insbesondere die Ankopplungsstelle zwischen dem Uebersetzungshebel und dem Kontaktsystem. Die Montage des Schaltgerätes ist ebenfalls kompliziert und mit bedeutenden Kosten verbunden.From DE-AS 1.237.667 an electromagnetic switching device of the type mentioned is known. In this switching device, the traction force curve of the magnet is adapted to the force requirement curve of the contact system in that the movement of the armature is transmitted to the contact system by means of a curved path. The cam track is arranged along the actuating end of a transmission lever which transmits the magnetic force to the contact system and reinforces it. The armature of the electromagnet pushes the actuating end of the transmission lever perpendicular to the stroke direction of the armature when the electromagnet is tightened via the cam track. The contact system which can be actuated by this rectangularly angled transmission lever, which is fixed in the knee region, is brought into the closed position. The contact pieces of the switching device are opened after the excitation voltage of the electromagnet is interrupted by the return spring of the electromagnetic switching device acting on the contact system, but only after the transmission lever has been released. The translation lever is supported in the switched-on position of the switching device and also at the beginning of a switching-off movement with a very flat area of the cam track on the armature. Thus, the speed of interruption of the contact pieces also depends on any additional elements that do not separate the armature from the transmission lever and are not mentioned in the description. Another disadvantage of this electromagnetic switching device is that the cam track must be designed very precisely and with a correspondingly high outlay in order to achieve the desired contact piece movement. In addition, the displacement forces of the transmission lever provided with the cam track act perpendicular to the stroke direction of the armature. For this reason, the Anchor guide have the desired accuracy of the translation lever movement, which in turn is associated with costs. This electromagnetic switching device also takes up a lot of space, in particular the coupling point between the transmission lever and the contact system. The assembly of the switchgear is also complicated and involves significant costs.
Aufgabe der vorliegenden Erfindung ist es, ein elektromagnetisches Schaltgerät der eingangs erwähnten Art zu entwickeln, das aus für eine einfache automatische Montage geeigneten, eine kompakte, platzsparende Anordnung ermöglichenden Teilen besteht, das lageunabhängig betriebssicher funktioniert und wirtschaftlich vorteilhaft ist.The object of the present invention is to develop an electromagnetic switching device of the type mentioned at the outset, which consists of parts which are suitable for simple automatic assembly and which enable a compact, space-saving arrangement, which functions reliably in any position and is economically advantageous.
Die gestellte Aufgabe ist dadurch gelöst, dass der Uebersetzungshebel mit seinem einen Ende am ortsfesten Gehäuse und mit seinem anderen Ende am Kontaktträger mindestens in Hubrichtung des Ankers in der Bewegungsebene des Uebersetzungshebels schwenkbar und verschiebbar abgestützt ist und dass der Mittelbereich des Uebersetzungshebels am Anker drehbar gelagert und in Hubrichtung des Ankers geführt ist und dass zwischen dem Kontaktträger und dem daran in Hubrichtung verschiebbar geführten Anker mindestens eine den Anker vom Kontaktträger wegdrückende Feder vorhanden ist. Dadurch, dass der Uebersetzungshebel mit seinem Mittelbereich nur am Anker drehbar befestigt und mit seinen beiden Enden verschiebbar und schwenkbar abgestützt ist, sind die Teile des Schaltgerätes durch einfaches Ineinanderstecken montierbar. Der Anker ist in platzsparender Weise am Kontaktträger verschiebbar. Die zwischen dem Kontaktträger und dem daran verschiebbaren Anker liegende Feder sorgt für ein lageunabhängiges Funktionieren des Schaltgerätes und dafür, dass die beiden Enden des Uebersetzungshebels auf den diese stützenden Auflageflächen ständig unter Federdruck aufliegen. Die einfache Ausbildung der Teile und deren einfache Montierbarkeit bieten wirtschaftliche Vorteile.The object is achieved in that the translation lever is pivotally and displaceably supported with its one end on the stationary housing and with its other end on the contact carrier at least in the stroke direction of the armature in the plane of movement of the translation lever, and that the central region of the translation lever is rotatably mounted on the armature and is guided in the stroke direction of the armature and that at least one spring pushing the armature away from the contact carrier is present between the contact carrier and the armature displaceably guided thereon in the stroke direction. The fact that the transmission lever with its central region is only rotatably fastened to the armature and with its two ends is displaceably and pivotably supported, the parts of the switching device can be assembled by simply plugging one into the other. The armature can be moved on the contact carrier in a space-saving manner. The spring lying between the contact carrier and the displaceable armature ensures that the switching device functions independently of the position and that the two ends of the transmission lever rest constantly on the supporting surfaces supporting them under spring pressure. The simple design of the parts and their ease of assembly offer economic advantages.
Der am Anker drehbar gelagerte Mittelbereich des Uebersetzungshebels ist vorteilhafterweise in einem mit dem Kontaktträger mitbeweglichen Führungs- und Anschlagsstück in Hubrichtung des Ankers geführt. Dadurch, dass der Mittelbereich des Uebersetzungshebels nicht im Gehäuse, sondern in einem mit dem Kontaktträger mitbeweglichen Führungs- und Anschlagsstück geführt ist, sind zwischen dem Kontaktträger und dem Gehäuse grössere, eine weniger aufwendige Montage erfordernde Toleranzen zulässig. Das Führungs- und Anschlagsstück kann aus einem mit einem Führungs- und Anschlagsschlitz versehenen, am Kontaktträger mittels Schnappverbindung befestigten Winkelstück bestehen. Das dem Kontaktträger abgekehrte Ende des Führungs- und Anschlagsschlitzes dient für den Anker als Anschlag und verhindert, dass der Anker bei der Montage oder Demontage aus dem Kontaktträger herausfällt. Ein mittels Schnappverbindung befestigbares Winkelstück ermöglicht eine einfache automatische Montage.The central region of the transmission lever, which is rotatably mounted on the armature, is advantageously guided in a guide and stop piece that is movable with the contact carrier in the stroke direction of the armature. Because the central region of the transmission lever is not guided in the housing, but rather in a guide and stop piece that is movable with the contact carrier, larger tolerances are required between the contact carrier and the housing, which require less complicated assembly. The guide and stop piece can consist of an angled piece provided with a guide and stop slot and fastened to the contact carrier by means of a snap connection. The end of the guide and stop slot facing away from the contact carrier serves as a stop for the anchor and prevents the anchor from falling out of the contact carrier during assembly or disassembly. An angle piece that can be fastened by means of a snap connection enables simple automatic assembly.
Der Uebersetzungshebel kann mindestens am einen Ende mit einem gerundeten, auf seiner Auflagefläche schwenkbaren und verschiebbaren Schuh versehen sein. Nachdem der Uebersetzungshebel mit seinen beiden Enden nur schwenkbar und verschiebbar abgestützt werden muss, ist es vorteilhaft diese verschiebbare und schwenkbare Abstützung mit einem Schuh zu lösen. Der Schuh besteht dabei vorteilhafterweise aus Kunststoff, wobei der Kunststoff auf der Abstützfläche gute Gleiteigenschaften aufweist. Der Schuh kann auf dem Uebersetzungshebel mittels Schnappverbindung befestigt sein, wodurch die Montage des Schuhs einfach erfolgen kann.The translation lever can be provided at least at one end with a rounded shoe which can be pivoted and displaced on its bearing surface. Since the transmission lever with its two ends only has to be pivotally and slidably supported, it is advantageous to release this slidable and pivotable support with a shoe. The shoe advantageously consists of plastic, the plastic having good sliding properties on the support surface. The shoe can be fastened on the transmission lever by means of a snap connection, as a result of which the shoe can be easily assembled.
An zwei einander abgekehrten Seiten des Ankers ist vorteilhafterweise je ein Uebersetzungshebel angeordnet, wobei der Anker im Kontaktträger verschiebbar geführt ist. Diese platzsparende Anordnung verhindert ein Verklemmen des Ankers und des Kontaktträgers bei den Hubbewegungen. Die beiden Uebersetzungshebel greifen dabei mit Vorteil an zwei diagonal liegenden Stellen des Kontaktträgers an. Diese Massnahme dient wiederum zur Verhinderung eines Klemmens des Kontaktträgers während den Schaltbewegungen.A translation lever is advantageously arranged on each of the two sides of the armature facing away from one another, the armature being displaceably guided in the contact carrier. This space-saving arrangement prevents the armature and the contact carrier from jamming during the lifting movements. The two transmission levers advantageously engage at two diagonally lying points on the contact carrier. This measure in turn serves to prevent jamming of the contact carrier during the switching movements.
Im folgenden werden anhand der beiliegenden Zeichnungen Ausführungsbeispiele der Erfindung näher beschrieben. Es zeigen:
- Fig.1
- den Aufriss und
- Fig.2
- den Seitenriss eines elektromagnetischen Schaltgerätes in schematischer Darstellung teilweise im Schnitt,
- Fig.3
- den Aufriss und
- Fig.4
- den Seitenriss eines Führungs- und Anschlagsstückes,
- Fig.5
- den Aufriss und
- Fig.6
- den Seitenriss eines Schuhs,
- Fig.7
- den im Gehäuse des Schaltgerätes untergebrachten Kontaktträger ohne bewegliche Kontaktstücke von oben her gesehen und
- Fig.8
- den Kontaktträger allein ohne bewegliche Kontaktstücke von oben her gesehen.
- Fig. 1
- the elevation and
- Fig. 2
- the side view of an electromagnetic switching device in a schematic representation, partly in section,
- Fig. 3
- the elevation and
- Fig. 4
- the side view of a guide and stop piece,
- Fig. 5
- the elevation and
- Fig. 6
- the side view of a shoe,
- Fig. 7
- seen in the housing of the switching device contact carrier without movable contact pieces from above and
- Fig. 8
- the contact carrier alone without moving contact pieces from above seen.
Fig.1 zeigt den Aufriss eines elektromagnetischen Schaltgerätes, das in diesem Beispiel als Schütz genannt wird, in schematischer Darstellung teilweise im Schnitt. Im Gehäuse 1 sind feste, in Fig.2 auch gut sichtbare Kontaktstücke 2 befestigt. An einem im Gehäuse 1 verschiebbar geführten Kontaktträger 3 sind mit den festen Kontaktstücken 2 in und ausser Eingriff bringbare, bewegliche Kontaktstücke 4 angebracht. Der Kontaktträger 3 erstreckt sich auf die untere Hälfte des Gehäuses 1, wo ein Schaltmagnet mit einem ortsfest gelagerten, eine Erregerwicklung 5 tragenden Kern 6 und mit einem Anker 7 untergebracht ist. Der Anker 7 ist im Kontaktträger 3 mit einem Bolzen 8 in einem Schlitz 9 verschiebbar geführt, wie dies in Fig.2 ersichtlich ist. Zwischen dem Anker 7 und dem Kontaktträger 3 sind zwei Federn 10 eingesetzt, die den Anker 7 vom Kontaktträger 3 in Hubrichtung des Ankers 7 wegdrücken.1 shows the elevation of an electromagnetic switching device, which is called a contactor in this example, in a schematic representation, partly in section.
Um einen Schaltmagneten mit einem im Verhältnis zum Schaltweg der beweglichen Kontaktstücke 4 kürzeren Hub verwenden zu können, ist zwischen dem Anker 7 und dem Kontaktträger 3 ein Uebersetzungshebel 11 vorgesehen. Der Uebersetzungshebel 11 liegt mit seinem einen Ende 12 am Gehäuse 1 und mit seinem anderen Ende 13 am Kontaktträger 3 auf. Sowohl am Gehäuse 1, als auch am Kontaktträger 3 sind Auflageflächen für die auf diesen Auflageflächen bei Schaltbewegungen sich schwenkenden und verschiebenden Enden 12, 13 des Uebersetzungshebels 11 ausgebildet. Die Auflageflächen bestehen aus Kunststoff, können aber auch aus einem geeigneten Metall hergestellt sein. Der Uebersetzungshebel 11 ist mit seinem Mittelbereich auf einem am Anker 7 angebrachten Bolzen 14 drehbar gelagert. Die Uebersetzung zwischen dem Schaltweg des Kontaktträgers 3 und dem Hub des Ankers 7 ist durch das Verhältnis der Hebelarme gegeben. Als Hebelarme müssen dabei einerseits die Distanz zwischen den Auflagestellen der beiden Enden 12, 13 des Uebersetzungshebels 11 und anderseits die Distanz zwischen dem Bolzen 14 am Anker 7 und der orstsfesten Auflagestelle des Endes 12 des Uebersetzungshebels 11 berücksichtigt werden. Beim Anziehen des Schaltmagneten nimmt der Anker 7 über den Bolzen 14 den Mittelbereich des mit seinem einen Ende 12 orstsfest aufliegenden Uebersetzungshebels 11 mit. Das andere Ende 13 des Uebersetzungshebels 11 drückt den Kontaktträger 3 mit den beweglichen Kontaktstücken 4 in die Einschaltstellung. Die zwischen dem Anker 7 und dem Kontaktträger 3 liegenden Feder 10 und auch die Rückstellfeder 15 des Kontaktträgers 3 werden dabei zusammengedrückt. Nach Unterbrechung der Speisespannung an der Erregerwicklung 5 des Schaltmagneten werden der Kontaktträger 3 und die daran angebrachten beweglichen Kontaktstücke 4 durch die Rückstellfeder 15 ungehindert in die ausgeschaltete Stellung gebracht. Die Federn 10 stossen dabei den Anker 7 vom Kontaktträger 3 weg, so dass die beiden Enden 12, 13 des am Anker 7 gelagerten Uebersetzungshebels 11 mit ihren Auflageflächen sowohl am Kontaktträger 3 als auch am Gehäuse 1 ständig in Berührung bleiben und der Anker 7 seine vorgesehene Lage im Kontaktträger 3 annimmt. Der durch die Rückstellfeder 15 belastete Kontaktträger 3 stützt sich in der Ausschaltstellung des Schützes an einem am Gehäuse 1 vorhandenen Anschlag.In order to be able to use a switching magnet with a shorter stroke in relation to the switching path of the
Um den Bolzen 14 und somit auch den daran gelagerten Uebersetzungshebel 11 am Kontaktträger 3 führen zu können und um zu verhindern, dass bei der Montage oder Demontage der Anker 7 durch die Feder 10 aus dem Kontaktträger 3 herausgestossen wird, sind am Kontaktträger 3 beidseitig angebrachte Führungs- und Anschlagsstücke 16 vorgesehen. Jeder am Anker 7 befestigte Bolzen 14 ist in einem im Führungs- und Anschlagsstück 16 angebrachten, geschlossenenen Führungs- und Anschlagsschlitz geführt. Das untere Ende des Führungs- und Anschlagsschlitzes dient als Anschlag für den Bolzen 14 und somit auch für den ihn tragenden Anker 7. In den Figuren 3 und 4 sind der Aufriss bzw. der Seitenriss des aus einem Winkelstück bestehenden Führungs- und Anschlagsstückes 16 dargestellt. Dieses aus Kunststoff hergestellte Winkelstück ist an seinem einen Ende mit einem gabelförmigen Teil versehen, der durch Schnappverbindung in einer U-förmigen Nut am Kontaktträger 3 befestigt wird. Diese Befestigungsart ist besonders geeignet für eine automatische Montage.In order to be able to guide the
Damit die Enden 12, 13 des Uebersetzungshebels 11 an den Auflagestellen sowohl am Gehäuse 1 als auch am Kontaktträger 3 gut schwenkbar und verschiebbar aufliegen können, sind an den beiden Enden 12, 13 des Uebersetzungshebels 11 aus Kunststoff bestehende Schuhe 17 angebracht. In den Figuren 5 und 6 sind der Aufriss bzw. der Seitenriss eines Schuhs 17 dargestellt. Der Schuh 17 ist durch Schnappverbindung am Ende 12, 13 des flachen Uebersetzungshebels 11 befestigt. Zu diesem Zweck weist der Schuh 17 zwei spreizbare, mit Haken abgeschlossene, in Fig.6 ersichtliche Seitenteile auf.So that the ends 12, 13 of the
Fig.7 zeigt den eingebauten Kontaktträger 3 ohne die beweglichen Kontaktstücke von oben her gesehen, wobei die oberen, den Kontaktträger 3 verdeckenden Teile des Schützes weggelassen sind. Man erkennt die an beiden einander abgekehrten Seiten des Kontaktträgers 3 liegenden Uebersetzungshebel 11 und die beiden am Kontaktträger 3 durch Schnappbefestigung angebrachten Führungs- und Anschlagsstücke 16. Die beiden Uebersetzungshebel 11 greifen mit ihren einen Enden 13 an zwei diagonal liegenden Stellen 18, 19 am Kontaktträger 3 an. Durch diese Anordnung kann ein Verklemmen des Kontaktträgers 3 im Gehäuse 1 verhindert werden. Die anderen Enden 12 der beiden Uebersetzungshebel 11 liegen dementsprechend auch an zwei diagonal angeordneten Auflagestellen des Gehäuses 1 auf.7 shows the built-in
In Fig.8 ist der Kontaktträger 3 allein ohne bewegliche Kontaktstücke von oben her gesehen dargestellt. In dieser Figur 8 erkennt man deutlich die beiden diagonal liegenden Stellen 18, 19 des Kontaktträgers 3, die für die Enden 12, 13 der Uebersetzungshebel 11 als Auflageflächen dienen. Der Kontaktträger 3 ist im Gehäuse 1 durch die vorstehenden Teile 20 geführt.In Figure 8, the
Claims (8)
- An electromagnetic switch apparatus, particularly a contactor, comprising a switching magnet accommodated in a casing (1), with stationary contact makers (2) fixed in the casing, with movable contact makers (4) mounted on a carrier (3), which can be put into and out of engagement with the stationary contact makers (2) by the armature (7) of the magnet, and with at least one transmission lever (11) effective between the armature (7) of the magnet and the contact carrier (3) which is guided displaceably in the casing of the switch apparatus in the lifting direction of the armature, characterised in that the transmission lever (11), with one end (12) on the stationary casing (1) and the other end (13) on the contact carrier (3), is supported pivotally and displaceably in the plane of movement of the lever (11) at least in the lifting direction of the armature (7), that the central portion of the lever (11) is mounted rotatably on the armature (7) and guided in the lifting direction of the armature (7), and that at least one spring (10) is provided between the contact carrier (3) and the armature (7) which is guided displaceably on the carrier in the lifting direction, the spring (10) pressing the armature (7) away from the carrier (3).
- An electromagnetic switch apparatus according to claim 1, characterised in that the central portion of the transmission lever (11), mounted rotatably on the armature (7), is guided in the lifting direction of the armature (7), in a guide and stop member (16) adapted to move with the contact carrier (3).
- An electromagnetic switch apparatus according to claim 2, characterised in that the guide and stop member (16) comprises an angular piece which is provided with a guide and stop slot and fixed to the contact carrier (3) by a snap connection.
- An electromagnetic switch apparatus according to claim 1, characterised in that the transmission lever (11) is provided at least at one end (12, 13) with a rounded shoe (17) which can be pivoted and displaced on its supporting surface.
- An electromagnetic switch apparatus according to claim 5, characterised in that the shoe (17) is made of plastic.
- An electromagnetic switch apparatus according to claim 5, characterised in that the shoe (17) is fixed on the lever (11) by a snap connection.
- An electromagnetic switch apparatus according to any of claims 1 to 6, characterised in that a transmission lever (11) is arranged at each of two outwardly directed sides of the armature (7), the armature (7) being guided displaceably in the contact carrier (3).
- An electromagnetic switch apparatus according to claim 7, characterised in that the two transmission levers (11) act on two diagonally located parts (18, 19) of the contact carrier (3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1585/91 | 1991-05-29 | ||
CH1585/91A CH682112A5 (en) | 1991-05-29 | 1991-05-29 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0515729A2 EP0515729A2 (en) | 1992-12-02 |
EP0515729A3 EP0515729A3 (en) | 1992-12-30 |
EP0515729B1 true EP0515729B1 (en) | 1995-02-15 |
Family
ID=4213853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91119117A Expired - Lifetime EP0515729B1 (en) | 1991-05-29 | 1991-11-11 | Electromagnetic switch apparatus, particularly a contactor |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0515729B1 (en) |
AT (1) | ATE118646T1 (en) |
CH (1) | CH682112A5 (en) |
DE (1) | DE59104629D1 (en) |
DK (1) | DK0515729T3 (en) |
ES (1) | ES2068467T3 (en) |
GR (1) | GR3015355T3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108091522B (en) * | 2017-12-12 | 2019-08-23 | 北京中车赛德铁道电气科技有限公司 | A kind of heavy DC contactor |
CN114360940B (en) * | 2022-03-15 | 2022-12-23 | 昆山市正耀电子科技有限公司 | Non-magnetic drive self-locking self-cleaning relay and on-off locking method |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1162449B (en) * | 1956-10-26 | 1964-02-06 | Ckd Modrany Narodni Podnik | Actuating magnet, especially for contactors |
DE1237667B (en) * | 1961-07-06 | 1967-03-30 | Calor Emag Elek Zitaets Ag | Electromagnetically operated switching device, especially a contactor, in which the pulling force of the magnet is transmitted via a curved path |
DE2142464C3 (en) * | 1971-08-25 | 1974-11-28 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Arrangement for the articulated connection of the armature of an electromagnetic switching device with the contact bridge carrier |
US4616202A (en) * | 1984-11-20 | 1986-10-07 | Mitsubishi Denki Kabushiki Kaisha | Electromagnetic contactor |
-
1991
- 1991-05-29 CH CH1585/91A patent/CH682112A5/de not_active IP Right Cessation
- 1991-11-11 DE DE59104629T patent/DE59104629D1/en not_active Expired - Fee Related
- 1991-11-11 DK DK91119117.9T patent/DK0515729T3/en not_active Application Discontinuation
- 1991-11-11 AT AT91119117T patent/ATE118646T1/en not_active IP Right Cessation
- 1991-11-11 ES ES91119117T patent/ES2068467T3/en not_active Expired - Lifetime
- 1991-11-11 EP EP91119117A patent/EP0515729B1/en not_active Expired - Lifetime
-
1995
- 1995-03-10 GR GR950400513T patent/GR3015355T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
ES2068467T3 (en) | 1995-04-16 |
EP0515729A2 (en) | 1992-12-02 |
CH682112A5 (en) | 1993-07-15 |
DE59104629D1 (en) | 1995-03-23 |
DK0515729T3 (en) | 1995-06-06 |
GR3015355T3 (en) | 1995-06-30 |
ATE118646T1 (en) | 1995-03-15 |
EP0515729A3 (en) | 1992-12-30 |
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