EP2410548A1 - Operating mechanism for an electric switching device - Google Patents
Operating mechanism for an electric switching device Download PDFInfo
- Publication number
- EP2410548A1 EP2410548A1 EP10170685A EP10170685A EP2410548A1 EP 2410548 A1 EP2410548 A1 EP 2410548A1 EP 10170685 A EP10170685 A EP 10170685A EP 10170685 A EP10170685 A EP 10170685A EP 2410548 A1 EP2410548 A1 EP 2410548A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- switching device
- spring
- switching
- movable contact
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
- H01H5/04—Energy stored by deformation of elastic members
- H01H5/06—Energy stored by deformation of elastic members by compression or extension of coil springs
- H01H5/08—Energy stored by deformation of elastic members by compression or extension of coil springs one end of spring transmitting movement to the contact member when the other end is moved by the operating part
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/503—Means for increasing the opening stroke of the contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
- H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
Definitions
- the invention relates to a switch lock for an electrical switching device, such. for circuit breakers, motor protection switches or disconnectors.
- This switching mechanism consists of a contact system with at least one fixed contact and at least one movable contact piece which is rotatably mounted on a contact carrier, which closes the contact to the fixed contact (210) in an ON position of the switching device and in an OFF position of the switching device, and a support lever rotatably supported in a bearing and a latch lever. Furthermore, the contact system on a toggle, at the knee joint engages a lock spring. This lock spring is stretched in the ON position and tries to lift the contact carrier and thus the movable contact piece from the fixed contact on the lower part of the toggle lever.
- the switch lock has three switch positions: in the ON position, the toggle lever is depressed.
- the knee lever is supported on the one hand on the support lever, on the other hand it is attached to the contact carrier.
- a handle biases in the ON position of the switching device, the lock spring such that the force acting on the knee joint spring force holds the knee joint in cooperation with a knee joint stop in the pushed-through position.
- the latch opens, so that the rotatably mounted on one side support lever on the opposite side of the rotatable support no longer finds support.
- the lock spring now pulls over the lower part of the toggle lever the contact carrier and thus the movable contact piece from the fixed contact. This effect is enhanced by the acting electrodynamic forces.
- the contacts are thus separated, although the toggle lever is still in the pushed-through position.
- the electrical switching device is not in the ON or in the OFF position, but in a TRIPLE position.
- the switchgear To switch on again, the switchgear must first be switched to the OFF position.
- the lock spring pulls in the OFF position, the knee joint far into the rear, the stop for the depressed position opposite side, that a force is exerted on the support lever because of limited by a stop opening travel of the contact carrier, which lets him lock with the latch lever , The switching device is now ready for switching back on.
- the switching mechanism according to the invention is characterized in that it dispenses with a toggle lever and instead a construction with a rotatably mounted contact carrier, which is supported on a support lever, is proposed, in which by a corresponding dimensioning and arrangement only a spring the task of the lock spring and at the same time the contact pressure spring from the known from the prior art switching locks takes over.
- the electrical switching devices according to the invention are characterized in that they contain one or more switching locks according to the invention with the feature combination according to claim 1.
- the movable contact piece is rotatably attached to a contact carrier.
- this contact carrier engages the spring.
- this spring is fastened to an assembly which can be moved by a handle for switching the switching device on and off.
- the contact carrier is rotatably clamped with a first end, with its second end it is supported in the ON as well as in the OFF state of the electrical switching device on a one-sided rotatably clamped support lever. In the OFF position, the spring holds the movable contact piece in the open position, ie, the movable contact piece is lifted from the fixed contact.
- the spring has the function of the lock spring from the known from the prior art switch locks.
- the articulation point of the spring changes with the assembly moved by the handle in such a way that it now pulls the movable contact piece onto the fixed contact.
- the spring now acts as a contact pressure spring.
- the support lever rotates about its rotatable clamping point, so that the rotatably mounted on one side contact carrier on the opposite side of the rotatable support no longer finds support.
- the spring now pulls the contact carrier and thus the movable contact piece from the fixed contact. This effect is enhanced by the acting electrodynamic forces.
- the contact carrier is shaped and the movable contact piece rotatably attached to the contact carrier, that the storage location of the rotatable contact piece falls in the case of triggering under the line of action of the spring. The spring thus pulls the movable contact piece further away from the fixed contact.
- the electrical switching device is thus after the ON and the OFF position in a further, third switching position, namely the TRIPPED position.
- This TRIPPED position is characterized by the fact that the switching device is not immediately brought back to the ON position from this position. Previously, the contact carrier must be brought back into the position in which he can rest on the support lever. Without deliberate action, the switching device can not be switched on again.
- the spring is a helical tension spring.
- Electrical switching devices according to the invention are characterized in that they contain one or more switching locks according to the invention.
- the electrical switching device is a multiphase switching device, then a separate switching mechanism according to the invention can be provided for each phase.
- the advantage of this variant is the short trip time until the contacts have separated from each other, caused by the low masses to be moved and thus the low To be overcome moment of inertia of the respective switching mechanism.
- a shorter trip time leads to a lower contact load, which is to be regarded as a further advantage.
- the advantage lies in a further reduction of the required number of individual parts, which leads to a further reduction of the installation effort and a further cost reduction.
- the Fig. 1 shows the principle of a switching lock (100) according to the prior art.
- the switch lock consists of a contact system (200) with a fixed contact (210) and a movable contact piece (220), which is rotatably mounted on a contact carrier (300) in a contact piece bearing (310).
- the contact between the contact pad (225) of the movable contact piece (220) and the contact plate (215) of the fixed contact (210) is closed, as in Fig. 1 indicated by dashed lines.
- Fig. 1 drawn solid OFF position is the contact between the contact plate (225) the movable contact piece (220) and the contact plate (215) of the fixed contact (210) separated.
- the contact carrier (300) is rotatably on the one hand on a toggle lever system (700) consisting of a lower toggle (710), a toggle joint (720) and an upper toggle lever (730) via a lower toggle joint (740) and on the other hand via a rotatable contact carrier bearing attached to a frame of the switch latch (100).
- the toggle lever system (700) on the other hand via a rotatable upper toggle joint (750) on the support lever (500) from.
- This support lever (500) is rotatably mounted at a first end in a support lever bearing (510) on the frame of the switching mechanism (100).
- the toggle lever system (700) applies force to the support lever (500) in the z direction.
- a lock spring (410) engages the toggle joint (720).
- the lock spring (410) is articulated at its second end to a movable actuating system (150).
- the spring attachment point of the actuation system (150) is movable between a position (160) in the ON position and a position (170) in the OFF position.
- the force of the lock spring (410) acts on the toggle joint (720) to be pulled to a kinked position.
- the contacts (215, 225) open or remain in the open position.
- the latch lever (600) opens by turning in the direction of care around that latching lever bearing (610).
- the at its first end in the support lever bearing (510) rotatably mounted support lever (500) at its second end no more support and opens in the z-direction.
- the lock spring (410) now pulls the contact carrier (300) and thus the movable contact piece (220) with its contact plate (225) from the fixed contact (210) via the lower toggle lever (710).
- This effect is enhanced by the acting electrodynamic forces.
- the contacts (215, 225) are thus separated from each other, although the toggle lever system (700) is still in the pushed-through position.
- the electrical switching device is located neither in the ON, nor in the OFF position, but in a TRIPLE position between the other two positions.
- the switchgear To switch on again, the switchgear must first be switched to the OFF position.
- the toggle lever system (700) buckles.
- the lock spring (410) pulls the toggle link (720) in the OFF position far enough into the rear, the stop (760) for the pushed position opposite side, that because of a Maisharianschlags (320) limited opening path of the contact carrier (300) a Force is exerted on the support lever (500), which lets him lock with the latch lever (600) again.
- the switching device is now ready for switching back on.
- Fig. 2 the principle of a switching mechanism (100) according to the invention is shown. Pulled through is the switch lock (100) drawn in the open OFF position, dashed lines hung in the closed ON position. In this ON position, a fixed contact (210) and a movable contact piece (220) of a contact system (200) touch each other. A spring (400) engages on the movable contact piece (220) on the one hand, on the other hand on a Federanlenkddling (160), which is designed to be movable with the aid of an actuating system (150). The movable contact piece (220) is rotatably connected to the contact carrier (300) by means of a contact carrier bearing (305).
- the contact carrier (300) itself is rotatably connected to a first end via a contact carrier bearing (305) with the frame of the switching mechanism (100). With its other end, the contact carrier (300) is supported on a support lever (500).
- the spring (400) In the ON position (160) of the Federanlenkmays the spring (400) causes a force on the movable contact piece (220) in the closing direction, ie in the direction of the fixed contact (210) and against the z-direction.
- the spring (400) in this position (160) acts as a contact pressure spring (420).
- the effective direction of the spring (400) changes to a component in FIG Opening direction, ie the z-direction, acts.
- the movable contact piece (220) lifts off from the fixed contact (210) and remains in the open OFF position.
- Fig. 3 shows in principle the switching mechanism according to the invention (100) in the OFF position in a side view.
- the spring pivot point (170) is in the OFF position, the spring (400) pulls the movable contact piece (220) in the open position against a stop (230).
- the contact carrier (300) is supported with its seen in the z direction upper end against the support lever (500).
- Fig. 5 shows in principle the switching mechanism according to the invention (100) at the moment of release in a side view.
- the spring attachment point (160) is in the ON position.
- the spring (400) pulls the movable contact piece (220) into the closed position against the fixed contact (210).
- the support lever (500) rotates about its support lever bearing (510) as indicated by the arrow, but still supports the contact carrier (300) at its upper end viewed in the z direction.
- the spring (400) amplifies this movement through its articulation points (160, 240) on the actuating system (150) and the movable contact piece (220). Also, the acting electrodynamic forces act in the same direction, so that the contacts (210, 220) open very quickly. The opening movements of the movable contact piece (220) and the contact carrier (300) are limited by corresponding stops (230, 320).
- the invention is described only for single-phase devices. Of course it can be multiplied also applied for multi-phase switching devices.
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
Description
Die Erfindung betrifft ein Schaltschloss für ein elektrisches Schaltgerät, wie z.B. für Leistungsschalter, Motorschutzschalter oder Trennschalter.The invention relates to a switch lock for an electrical switching device, such. for circuit breakers, motor protection switches or disconnectors.
Aus der
Im Falle eines unerwarteten Betriebszustandes des elektrischen Schaltgerätes, wie z.B. einem Kurzschluß, öffnet der Klinkhebel, so dass der an einer Seite drehbar gelagerte Stützhebel auf der der drehbaren Lagerung gegenüberliegenden Seite keine Stütze mehr findet. Die Schlossfeder zieht nun über den unteren Teil des Kniehebels den Kontaktträger und damit das bewegliche Kontaktstück vom Festkontakt ab. Dieser Effekt wird durch die wirkenden elektrodynamischen Kräfte verstärkt. Die Kontakte sind also voneinander getrennt, obwohl sich der Kniehebel nach wie vor in der durchgedrückten Stellung befindet. Somit befindet sich das elektrische Schaltgerät weder in der EIN-, noch in der AUS-Stellung, sondern in einer AUSGELÖST-Stellung.In the event of an unexpected operating condition of the electrical switching device, such as e.g. a short circuit, the latch opens, so that the rotatably mounted on one side support lever on the opposite side of the rotatable support no longer finds support. The lock spring now pulls over the lower part of the toggle lever the contact carrier and thus the movable contact piece from the fixed contact. This effect is enhanced by the acting electrodynamic forces. The contacts are thus separated, although the toggle lever is still in the pushed-through position. Thus, the electrical switching device is not in the ON or in the OFF position, but in a TRIPLE position.
Zum Wiedereinschalten muss das Schaltgerät zuerst in die AUS-Stellung gebracht werden. Dabei knickt der Kiehebel ein. Die Schlossfeder zieht in der AUS-Stellung das Kniegelenk soweit in die hintere, dem Anschlag für die durchgedrückte Stellung entgegengesetzte Seite, dass wegen des durch einen Anschlag begrenzten Öffnungswegs des Kontaktträgers eine Kraft auf den Stützhebel ausgeübt wird, die ihn wieder mit dem Klinkhebel verrasten läßt. Das Schaltgerät ist nun wieder zum Einschalten bereit.To switch on again, the switchgear must first be switched to the OFF position. The Kiehebel kinks. The lock spring pulls in the OFF position, the knee joint far into the rear, the stop for the depressed position opposite side, that a force is exerted on the support lever because of limited by a stop opening travel of the contact carrier, which lets him lock with the latch lever , The switching device is now ready for switching back on.
Das oben beschriebene Prinzip eines Schaltschlosses mit Kniehebel ist auch aus einer Reihe weiterer Schriften, wie der
Alle beschriebenen Kniehebelsysteme bedingen aber eine Vielzahl von Teilen und aufwändige Konstruktionen, die zudem erhöhten Montageaufwand und somit hohe Kosten mit sich bringen, sowie einer gewünschten möglichst kompakten Bauweise von Schaltschlössern entgegenstehen.However, all described toggle lever systems require a variety of parts and complex designs, which also bring increased installation costs and thus high costs, as well as a desired compact design as possible of switching locks.
Es ist somit Aufgabe der vorliegenden Erfindung, ein Schaltschloss anzugeben, dass die vorstehend genannten Nachteile des Standes der Technik überwindet bei gleichzeitiger Beibehaltung oder Verbesserung der Schaltdynamik.It is therefore an object of the present invention to provide a switch lock that overcomes the above-mentioned disadvantages of the prior art while maintaining or improving the switching dynamics.
Die der Erfindung zugrunde liegende Aufgabe wird mit der Merkmalskombination gemäß Anspruch 1 gelöst. Bevorzugte Ausführungsbeispiele können den Unteransprüchen entnommen werden.The object underlying the invention is achieved with the feature combination according to claim 1. Preferred embodiments may be taken from the subclaims.
Das erfindungsgemäße Schaltschloss zeichnet sich dadurch aus, dass auf einen Kniehebel verzichtet wird und statt dessen eine Konstruktion mit einem drehbar gelagerten Kontaktträger, der sich auf einem Stützhebel abstützt, vorgeschlagen wird, bei der durch eine entsprechende Dimensionierung und Anordnung nur eine Feder die Aufgabe der Schlossfeder und gleichzeitig die der Kontaktdruckfeder aus den aus dem Stand der Technik bekannten Schaltschlössern übernimmt.The switching mechanism according to the invention is characterized in that it dispenses with a toggle lever and instead a construction with a rotatably mounted contact carrier, which is supported on a support lever, is proposed, in which by a corresponding dimensioning and arrangement only a spring the task of the lock spring and at the same time the contact pressure spring from the known from the prior art switching locks takes over.
Es ist eine weitere Aufgabe der vorliegenden Erfindung, ein elektrisches Schaltgerät für eine oder mehrere Stromphasen anzugeben, dass günstig herstellbar ist und kompakt baut.It is a further object of the present invention to provide an electrical switching device for one or more current phases that is inexpensive to manufacture and compact.
Diese weitere, der Erfindung zugrunde liegende Aufgabe wird durch die Merkmalskombinationen der Ansprüche 4 und 5 gelöst.This further object of the invention is achieved by the combination of features of claims 4 and 5.
Die erfindungsgemäßen elektrischen Schaltgeräte zeichnen sich dadurch aus, dass sie ein oder mehrere erfindungsgemäße Schaltschlösser mit der Merkmalskombination gemäß des Anspruchs 1 enthalten.The electrical switching devices according to the invention are characterized in that they contain one or more switching locks according to the invention with the feature combination according to claim 1.
Erfindungsgemäß ist das bewegliche Kontaktstück drehbar an einem Kontaktträger befestigt. An diesem Kontaktträger greift die Feder an. Diese Feder ist andererseits an einer Baugruppe befestigt, die von einer Handhabe zum Ein - und Ausschalten des Schaltgerätes bewegt werden kann. Der Kontaktträger ist mit einem ersten Ende drehbar eingespannt, mit seinem zweiten Ende stützt er sich im EIN-, als auch im AUS-Zustand des elektrischen Schaltgerätes an einem einseitig drehbar eingespannten Stützhebel ab. In der AUS-Stellung hält die Feder das bewegliche Kontaktstück in der Offen-Stellung, d.h. das bewegliche Kontaktstück ist von dem Festkontakt abgehoben. Die Feder hat die Funktion der Schlossfeder aus den aus dem Stand der Technik bekannten Schaltschlössern.According to the invention, the movable contact piece is rotatably attached to a contact carrier. At this contact carrier engages the spring. On the other hand, this spring is fastened to an assembly which can be moved by a handle for switching the switching device on and off. The contact carrier is rotatably clamped with a first end, with its second end it is supported in the ON as well as in the OFF state of the electrical switching device on a one-sided rotatably clamped support lever. In the OFF position, the spring holds the movable contact piece in the open position, ie, the movable contact piece is lifted from the fixed contact. The spring has the function of the lock spring from the known from the prior art switch locks.
Wird die Handhabe in Stellung EIN bewegt, verändert sich der Anlenkpunkt der Feder mit der durch die Handhabe bewegten Baugruppe dergestalt, dass sie nun das bewegliche Kontaktstück auf den Festkontakt zieht. Die Feder wirkt nun als Kontaktdruckfeder.If the handle is moved to the ON position, the articulation point of the spring changes with the assembly moved by the handle in such a way that it now pulls the movable contact piece onto the fixed contact. The spring now acts as a contact pressure spring.
Im Falle eines unerwarteten Betriebszustandes des elektrischen Schaltgerätes, wie z.B. einem Kurzschluss, dreht der Stützhebel um seine drehbare Einspannstelle, so dass der an einer Seite drehbar gelagerte Kontaktträger auf der der drehbaren Lagerung gegenüberliegenden Seite keine Stütze mehr findet. Die Feder zieht nun den Kontaktträger und damit das bewegliche Kontaktstück vom Festkontakt ab. Dieser Effekt wird durch die wirkenden elektrodynamischen Kräfte verstärkt. Der Kontaktträger ist so geformt und das bewegliche Kontaktstück drehbar so an dem Kontaktträger befestigt, dass der Lagerort des drehbaren Kontaktstück im Falle der Auslösung unter die Wirklinie der Feder fällt. Die Feder zieht somit das bewegliche Kontaktstück weiter von dem Festkontakt weg. Das elektrische Schaltgerät befindet sich damit nach der EIN- und der AUS-Stellung in einer weiteren, dritten Schaltstellung, nämlich der AUSGELÖST-Stellung. Diese AUSGELÖST-Stellung zeichnet sich dadurch aus, dass das Schaltgerät von dieser Stellung aus nicht sofort wieder in die EIN-Stellung gebracht werden dann. Zuvor muss der Kontaktträger wieder in die Position gebracht, werden, in der er sich an dem Stützhebel abstützen kann. Ohne bewusste Aktion kann das Schaltgerät also nicht wieder eingeschaltet werden.In the event of an unexpected operating condition of the electrical switching device, such as e.g. a short circuit, the support lever rotates about its rotatable clamping point, so that the rotatably mounted on one side contact carrier on the opposite side of the rotatable support no longer finds support. The spring now pulls the contact carrier and thus the movable contact piece from the fixed contact. This effect is enhanced by the acting electrodynamic forces. The contact carrier is shaped and the movable contact piece rotatably attached to the contact carrier, that the storage location of the rotatable contact piece falls in the case of triggering under the line of action of the spring. The spring thus pulls the movable contact piece further away from the fixed contact. The electrical switching device is thus after the ON and the OFF position in a further, third switching position, namely the TRIPPED position. This TRIPPED position is characterized by the fact that the switching device is not immediately brought back to the ON position from this position. Previously, the contact carrier must be brought back into the position in which he can rest on the support lever. Without deliberate action, the switching device can not be switched on again.
Für das erfindungsgemäße Schaltschloss werden also weniger Einzelteile benötigt, insbesondere wird kein Kniehebel und nur eine Feder benötigt, die die Aufgaben der Schlossfeder, als auch die der Kontaktdruckfeder übernimmt.For the switching mechanism according to the invention thus fewer items are needed, in particular, no toggle and only one spring is needed, which takes over the tasks of the lock spring, as well as the contact pressure spring.
In einer bevorzugten Ausführungsform handelt es sich bei der Feder um eine Spiralzugfeder. Erfindungsgemäße elektrische Schaltgeräte zeichnen sich dadurch aus, dass sie ein oder mehrere erfindungsgemäße Schaltschlösser enthalten.In a preferred embodiment, the spring is a helical tension spring. Electrical switching devices according to the invention are characterized in that they contain one or more switching locks according to the invention.
Handelt es sich bei dem elektrischen Schaltgerät um ein mehrphasiges Schaltgerät, so kann für jede Phase ein eigenes erfindungsgemäßes Schaltschloss vorgesehen werden.If the electrical switching device is a multiphase switching device, then a separate switching mechanism according to the invention can be provided for each phase.
Der Vorteil dieser Variante liegt in der kurzen Auslösezeit, bis sich die Kontakte voneinander getrennt haben, hervorgerufen durch die geringen zu bewegenden Massen und damit das geringe zu überwindende Trägheitsmoment des jeweiligen Schaltschlosses. Eine kürzere Auslösezeit führt zu einer geringeren Kontaktbelastung, was als weiterer Vorteil anzusehen ist.The advantage of this variant is the short trip time until the contacts have separated from each other, caused by the low masses to be moved and thus the low To be overcome moment of inertia of the respective switching mechanism. A shorter trip time leads to a lower contact load, which is to be regarded as a further advantage.
Es ist aber genau so möglich, für jede Phase einen oder auch mehrere bewegliche Kontaktstücke auf einem Kontaktträger zu befestigen. In diesem Fall wird bei der Auslösung durch eine Phase der gemeinsame Kontaktträger in die AUS-Stellung gebracht und alle beweglichen Kontaktstücke heben nahezu gleichzeitig von den jeweiligen Festkontakten ab.But it is just as possible to attach one or more movable contact pieces on a contact carrier for each phase. In this case, when triggered by a phase of the common contact carrier is brought into the OFF position and all movable contacts lift almost simultaneously from the respective fixed contacts.
Bei dieser Variante liegt der Vorteil in einer weiteren Verringerung der benötigten Anzahl von Einzelteilen, was zu einer weiteren Verringerung des Montageaufwands und einer weiteren Kostenreduktion führt.In this variant, the advantage lies in a further reduction of the required number of individual parts, which leads to a further reduction of the installation effort and a further cost reduction.
Anhand der in den Figuren dargestellten Ausführungsbeispiele wird die Erfindung näher erläutert. Es zeigen:
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Fig 1 eine Prinzipdarstellung eines Schaltschlosses nach dem Stand der Technik -
Fig 2 eine Prinzipdarstellung eines erfindungsgemäßen Schaltschlosses -
Fig 3 eine Prinzipdarstellung eines erfindungsgemäßen Schaltschlosses in der Stellung AUS -
Fig 4 eine Prinzipdarstellung eines erfindungsgemäßen Schaltschlosses in der Stellung EIN -
Fig 5 eine Prinzipdarstellung eines erfindungsgemäßen Schaltschlosses im Moment des Auslösens -
Fig 6 eine Prinzipdarstellung eines erfindungsgemäßen Schaltschlosses in der Stellung AUSGELÖST
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Fig. 1 a schematic diagram of a switching mechanism according to the prior art -
Fig. 2 a schematic diagram of a switching mechanism according to the invention -
Fig. 3 a schematic diagram of a switching mechanism according to the invention in the OFF position -
Fig. 4 a schematic diagram of a switching mechanism according to the invention in the ON position -
Fig. 5 a schematic diagram of a switching mechanism according to the invention at the moment of triggering -
Fig. 6 a schematic diagram of a switching mechanism according to the invention in the position TRIPPED
Die
Eine Schloßfeder (410) greift am Kniehebelgelenk (720) an. Die Schloßfeder (410) ist mit ihrem zweiten Ende an ein bewegliches Betätigungssystem (150) angelenkt. Der Federanlenkpunkt des Betätigungssystems (150) ist zwischen einer Position (160) in ON-Stellung und einer Position (170) in OFF-Stellung ortsveränderlich. Befindet sich der Federanlenkpunkt des Betätigungssystem in der OFF-Position (170), so wirkt die Kraft der Schloßfeder (410) so auf das Kniehebelgelenk (720) ein, dass es in eine geknickte Position gezogen wird. Dadurch öffnen die Kontakte (215, 225) bzw. verbleiben in der geöffneten Position. Befindet sich der Federanlenkpunkt des Betätigungssystem in der ON-Position (160), so wirkt die Kraft der Schloßfeder (410) so auf das Kniehebelgelenk (720) ein, dass es in eine gestreckte Position gegen einen Anschlag (760) gezogen wird. Dadurch schließen die Kontakte (215, 225) bzw. verbleiben in der geschlossenen Position. In dieser geschlossenen Position der Kontakte (215, 225) wirkt eine Kontaktdruckfeder (420) zwischen dem Kontaktträger (300) und dem beweglichen Kontaktstück (220) so auf das bewegliche Kontaktstück (220), dass das Kontaktplättchen (225) des beweglichen Kontaktstücks (220) auf das Kontaktplättchen (215) des Festkontaktes gedrückt wird.A lock spring (410) engages the toggle joint (720). The lock spring (410) is articulated at its second end to a movable actuating system (150). The spring attachment point of the actuation system (150) is movable between a position (160) in the ON position and a position (170) in the OFF position. When the spring return point of the actuation system is in the OFF position (170), the force of the lock spring (410) acts on the toggle joint (720) to be pulled to a kinked position. As a result, the contacts (215, 225) open or remain in the open position. When the spring attachment point of the actuation system is in the ON position (160), the force of the lock spring (410) acts on the toggle joint (720) to be pulled into an extended position against a stop (760). This closes the contacts (215, 225) or remain in the closed position. In this closed position of the contacts (215, 225) acts a contact pressure spring (420) between the contact carrier (300) and the movable contact piece (220) on the movable contact piece (220), that the contact plate (225) of the movable contact piece (220 ) is pressed onto the contact plate (215) of the fixed contact.
Im Falle eines unerwarteten Betriebszustandes des elektrischen Schaltgerätes, wie z.B. einem Kurzschluß, öffnet der Klinkhebel (600), indem er sich in Pfleilrichtung um dass Klinkhebellager (610) dreht. Damit findet der an seinem ersten Ende im Stützhebellager (510) drehbar gelagerte Stützhebel (500) an seinem zweiten Ende keine Stütze mehr und öffnet in z-Richtung. Die Schlossfeder (410) zieht nun über den unteren Kniehebel (710) den Kontaktträger (300) und damit das bewegliche Kontaktstück (220) mit seinem Kontaktplättchen (225) vom Festkontakt (210) ab. Dieser Effekt wird durch die wirkenden elektrodynamischen Kräfte verstärkt. Die Kontakte (215, 225) sind also voneinander getrennt, obwohl sich das Kniehebelsystem (700) nach wie vor in der durchgedrückten Stellung befindet. Somit befindet sich das elektrische Schaltgerät weder in der EIN-, noch in der AUS-Stellung, sondern in einer AUSGELÖST-Stellung zwischen den beiden anderen Stellungen.In the event of an unexpected operating state of the electrical switching device, such as a short circuit, the latch lever (600) opens by turning in the direction of care around that latching lever bearing (610). Thus, the at its first end in the support lever bearing (510) rotatably mounted support lever (500) at its second end no more support and opens in the z-direction. The lock spring (410) now pulls the contact carrier (300) and thus the movable contact piece (220) with its contact plate (225) from the fixed contact (210) via the lower toggle lever (710). This effect is enhanced by the acting electrodynamic forces. The contacts (215, 225) are thus separated from each other, although the toggle lever system (700) is still in the pushed-through position. Thus, the electrical switching device is located neither in the ON, nor in the OFF position, but in a TRIPLE position between the other two positions.
Zum Wiedereinschalten muss das Schaltgerät zuerst in die AUS-Stellung gebracht werden. Dabei knickt das Kniehebelsystem (700) ein. Die Schlossfeder (410) zieht in der AUS-Stellung das Kniehebelgelenk (720) soweit in die hintere, dem Anschlag (760) für die durchgedrückte Stellung entgegengesetzte Seite, dass wegen des durch einen Kontaktträgeranschlags (320) begrenzten Öffnungswegs des Kontaktträgers (300) eine Kraft auf den Stützhebel (500) ausgeübt wird, die ihn wieder mit dem Klinkhebel (600) verrasten läßt. Das Schaltgerät ist nun wieder zum Einschalten bereit.To switch on again, the switchgear must first be switched to the OFF position. The toggle lever system (700) buckles. The lock spring (410) pulls the toggle link (720) in the OFF position far enough into the rear, the stop (760) for the pushed position opposite side, that because of a Kontaktträgeranschlags (320) limited opening path of the contact carrier (300) a Force is exerted on the support lever (500), which lets him lock with the latch lever (600) again. The switching device is now ready for switching back on.
In
Wird der Ort des Federanlenkpunktes von der ON- (160) in die OFF-Position (170) verändert, verändert sich die Wirkrichtung der Feder (400) derart, dass sie nun eine Komponente in Öffnungsrichtung, also der z-Richtung, wirkt. Dadurch hebt das bewegliche Kontaktstück (220) von dem Festkontakt (210) ab und verbleibt in der geöffneten OFF-Position.When the location of the spring attachment point is changed from the ON (160) to the OFF position (170), the effective direction of the spring (400) changes to a component in FIG Opening direction, ie the z-direction, acts. As a result, the movable contact piece (220) lifts off from the fixed contact (210) and remains in the open OFF position.
In
Die Erfindung ist nur für 1-phasige Geräte beschrieben. Selbstverständlich kann sie vervielfacht auch für mehrphasige Schaltgeräte angewendet werden.The invention is described only for single-phase devices. Of course it can be multiplied also applied for multi-phase switching devices.
- 100100
- Schaltschlossswitch lock
- 150150
- Betätigungssystemactuating system
- 160160
- Position des Federanlenkpunktes in Stellung ONPosition of the spring connection point in position ON
- 170170
- Position des Federanlenkpunktes in Stellung OFFPosition of the spring connection point in the OFF position
- 200200
- KontaktsystemContact system
- 210210
- Festkontaktfixed contact
- 215215
- Kontaktplättchen des FestkontaktsContact pads of the fixed contact
- 220220
- bewegliches Kontaktstückmovable contact piece
- 225225
- Kontaktplättchen des beweglichen KontaktesContact pads of the moving contact
- 230230
- Anschlag des beweglichen KontaktstücksStop of the movable contact piece
- 240240
- Anlenkpunkt der Feder am beweglichen KontaktstückLink point of the spring on the movable contact piece
- 300300
- Kontaktträgercontact support
- 305305
- KontaktträgerlagerContact carrier bearings
- 310310
- KontaktstücklagerContact piece bearing
- 320320
- KontaktträgeranschlagContact Beam Anchor
- 400400
- Federfeather
- 410410
- Schloßfederlock spring
- 420420
- KontaktdruckfederContact pressure spring
- 500500
- Stützhebelsupport lever
- 510510
- StützhebellagerSupport lever bearing
- 600600
- KlinkhebelKlink lever
- 610610
- KlinkhebellagerKlink lever bearing
- 700700
- KniehebelsystemToggle system
- 710710
- Unterer KniehebelLower toggle
- 720720
- KniehebelgelenkToggle joint
- 730730
- oberer Kniehebelupper toggle
- 740740
- unteres Kniehebelgelenklower toggle joint
- 750750
- oberes Kniehebelgelenkupper toggle joint
- 760760
- Anschlagattack
Claims (5)
dadurch gekennzeichnet,
dass die Feder (400) so dimensioniert und angebracht ist, dass sie in der EIN-Stellung des Schaltgerätes die erforderliche Kontaktkraft aufbringt und im Falle des Ausschaltens die Ausschaltbewegung des beweglichen Kontaktstücks (220) beschleunigt.Switching mechanism (100) for an electric switching device (10) with a contact system (200) having at least one fixed contact (210) and at least one movable contact piece (220) which is rotatably mounted on a contact carrier (300), which in an ON Position of the switching device closes the contact to the fixed contact (210) and separates in an OFF position of the switching device, and a support lever (500) which is rotatably mounted in a bearing (510), and a spring (400),
characterized,
that the spring (400) is dimensioned and mounted so that it applies the required contact force in the ON position of the switching device and in the case of switching off, accelerates the switch-off movement of the movable contact piece (220).
dadurch gekennzeichnet,
dass die Feder (400) als Spiralzugfeder ausgebildet ist.Switching mechanism (100) according to claim 1,
characterized,
that the spring (400) is formed as a coil spring.
dadurch gekennzeichnet,
dass der Kontaktträger (300) L-förmig ausgebildet ist und sich das Kontaktstücklager (310) auf dem kurzen Schenkel des L zwischen dem Kontaktträgerlager (305) und dem Übergang von kurzem und langem Schenkel des L befindet.Switching mechanism (100) according to claim 1 or 2,
characterized,
in that the contact carrier (300) is L-shaped and the contact piece bearing (310) is located on the short leg of the L between the contact carrier bearing (305) and the transition of the short and long legs of the L.
dadurch gekennzeichnet,
dass im Falle, dass das elektrische Schaltgerät mehrere Phasen enthält mit mehreren Festkontakten (210) und mehreren beweglichen Kontaktstücken (220) enthält, jede Phase ein Schaltschloss (100) gemäß einem der vorhergehenden Ansprüche aufweist, das unabhängig von den anderen Schaltschlössern (100) auslösen kann.Electrical switching device,
characterized,
that in the event that the electrical switching device includes a plurality of phases includes a plurality of fixed contacts (210) and several movable contacts (220), each phase of a switching mechanism (100) according to any preceding claim having the trigger independent of the other switching locks (100) can.
dadurch gekennzeichnet,
dass im Falle, dass das elektrische Schaltgerät mehrere Phasen mit mehreren Festkontakten (210) und mehreren beweglichen Kontaktstücken (220) enthält, das elektrische Schaltgerät nur ein Schaltschloss (100) gemäß einem der vorhergehenden Ansprüche enthält und im Falle der Ausschaltung alle beweglichen Kontaktstücke (220) nahezu gleichzeitig vom dem ihnen zugeordneten Festkontakt getrennt werden.Electrical switching device,
characterized,
that in the case that the electrical switching device includes a plurality of phases with a plurality of fixed contacts (210) and a plurality of movable contact pieces (220), the electrical switching device only a switching mechanism (100) according to one of the preceding claims and in the case of switching off all movable contact pieces (220 ) are separated almost simultaneously from the fixed contact assigned to them.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10170685A EP2410548A1 (en) | 2010-07-23 | 2010-07-23 | Operating mechanism for an electric switching device |
CN201180035988XA CN103180925A (en) | 2010-07-23 | 2011-07-21 | Switch latch for an electrical switching device |
CA2806128A CA2806128A1 (en) | 2010-07-23 | 2011-07-21 | Switch latch for an electrical switching device |
PCT/EP2011/062567 WO2012010670A1 (en) | 2010-07-23 | 2011-07-21 | Switch latch for an electrical switching device |
US13/811,412 US20130118872A1 (en) | 2010-07-23 | 2011-07-21 | Switch latch for an electrical switching device |
EP11735436.5A EP2596510B1 (en) | 2010-07-23 | 2011-07-21 | Switch latch for an electrical switching device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10170685A EP2410548A1 (en) | 2010-07-23 | 2010-07-23 | Operating mechanism for an electric switching device |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2410548A1 true EP2410548A1 (en) | 2012-01-25 |
Family
ID=43304644
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10170685A Withdrawn EP2410548A1 (en) | 2010-07-23 | 2010-07-23 | Operating mechanism for an electric switching device |
EP11735436.5A Not-in-force EP2596510B1 (en) | 2010-07-23 | 2011-07-21 | Switch latch for an electrical switching device |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11735436.5A Not-in-force EP2596510B1 (en) | 2010-07-23 | 2011-07-21 | Switch latch for an electrical switching device |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130118872A1 (en) |
EP (2) | EP2410548A1 (en) |
CN (1) | CN103180925A (en) |
CA (1) | CA2806128A1 (en) |
WO (1) | WO2012010670A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10504668B1 (en) | 2018-08-06 | 2019-12-10 | Carling Technologies, Inc. | Circuit breaker with snap action contacts |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA3053044A1 (en) | 2019-08-26 | 2021-02-26 | Alpha Technologies Ltd. | Bi-stable transfer switch |
CN114068228A (en) * | 2021-10-28 | 2022-02-18 | 华能通辽风力发电有限公司 | Isolating switch |
US11862412B1 (en) * | 2022-09-21 | 2024-01-02 | Rockwell Automation Switzerland Gmbh | System and method for reduced torque switching |
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DE1916956A1 (en) * | 1969-04-02 | 1970-10-15 | Bosch Hausgeraete Gmbh | Electrical snap switch |
US3614685A (en) | 1970-02-06 | 1971-10-19 | Westinghouse Electric Corp | Circuit breaker with handle-indicating means |
DE3830719A1 (en) * | 1987-03-12 | 1990-03-22 | Forbach Gmbh | Electric flow heater |
GB2237683A (en) * | 1989-11-03 | 1991-05-08 | Schupa Elektro Gmbh & Co Kg | A switch |
DE4239708A1 (en) * | 1992-11-26 | 1994-06-01 | Abb Patent Gmbh | Electrical switch device with fixed and movable contacts - has moving contact formed as contact see-saw rotatable between two end positions with switch lever perpendicular to contact lever |
WO2003009324A1 (en) | 2001-07-14 | 2003-01-30 | Moeller Gmbh | Switch lock for multipole electrical switchgear |
DE102006059307B3 (en) | 2006-12-15 | 2008-02-21 | Moeller Gmbh | Electrical switching device e.g. power switch and separation switch, has auxiliary axle inserted for formation of device as one-way circuit breaker, where upper and lower levers are connected with each other by axle in flexible manner |
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CH673175A5 (en) * | 1987-07-22 | 1990-02-15 | Bbc Brown Boveri & Cie | |
CN2417548Y (en) * | 2000-02-17 | 2001-01-31 | 新巨企业股份有限公司 | Improved switching structure |
DE10133879B4 (en) * | 2001-07-12 | 2004-07-08 | Siemens Ag | Switchgear with a key switch |
CN1293581C (en) * | 2004-08-10 | 2007-01-03 | 浙江正泰电器股份有限公司 | Biimpact fast switching device |
-
2010
- 2010-07-23 EP EP10170685A patent/EP2410548A1/en not_active Withdrawn
-
2011
- 2011-07-21 CN CN201180035988XA patent/CN103180925A/en active Pending
- 2011-07-21 EP EP11735436.5A patent/EP2596510B1/en not_active Not-in-force
- 2011-07-21 US US13/811,412 patent/US20130118872A1/en not_active Abandoned
- 2011-07-21 WO PCT/EP2011/062567 patent/WO2012010670A1/en active Application Filing
- 2011-07-21 CA CA2806128A patent/CA2806128A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1916956A1 (en) * | 1969-04-02 | 1970-10-15 | Bosch Hausgeraete Gmbh | Electrical snap switch |
US3614685A (en) | 1970-02-06 | 1971-10-19 | Westinghouse Electric Corp | Circuit breaker with handle-indicating means |
DE3830719A1 (en) * | 1987-03-12 | 1990-03-22 | Forbach Gmbh | Electric flow heater |
GB2237683A (en) * | 1989-11-03 | 1991-05-08 | Schupa Elektro Gmbh & Co Kg | A switch |
DE4239708A1 (en) * | 1992-11-26 | 1994-06-01 | Abb Patent Gmbh | Electrical switch device with fixed and movable contacts - has moving contact formed as contact see-saw rotatable between two end positions with switch lever perpendicular to contact lever |
WO2003009324A1 (en) | 2001-07-14 | 2003-01-30 | Moeller Gmbh | Switch lock for multipole electrical switchgear |
DE102006059307B3 (en) | 2006-12-15 | 2008-02-21 | Moeller Gmbh | Electrical switching device e.g. power switch and separation switch, has auxiliary axle inserted for formation of device as one-way circuit breaker, where upper and lower levers are connected with each other by axle in flexible manner |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10504668B1 (en) | 2018-08-06 | 2019-12-10 | Carling Technologies, Inc. | Circuit breaker with snap action contacts |
EP3608933A1 (en) * | 2018-08-06 | 2020-02-12 | Carling Technologies Inc. | Circuit breaker with snap action contacts |
Also Published As
Publication number | Publication date |
---|---|
EP2596510A1 (en) | 2013-05-29 |
EP2596510B1 (en) | 2017-05-31 |
CA2806128A1 (en) | 2012-01-26 |
CN103180925A (en) | 2013-06-26 |
US20130118872A1 (en) | 2013-05-16 |
WO2012010670A1 (en) | 2012-01-26 |
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