EP0171775A2 - Safety switch - Google Patents

Safety switch Download PDF

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Publication number
EP0171775A2
EP0171775A2 EP85110059A EP85110059A EP0171775A2 EP 0171775 A2 EP0171775 A2 EP 0171775A2 EP 85110059 A EP85110059 A EP 85110059A EP 85110059 A EP85110059 A EP 85110059A EP 0171775 A2 EP0171775 A2 EP 0171775A2
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
coil
core
measuring device
safety switch
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.)
Withdrawn
Application number
EP85110059A
Other languages
German (de)
French (fr)
Other versions
EP0171775A3 (en
Inventor
Klaus Hafemann
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.)
Wik Elektro-Hausgerate-Vertriebsgesellschaft Mbh & Co Produktions-Kommanditgesellschaft
WIK Elektro Hausgeraete
Original Assignee
Wik Elektro-Hausgerate-Vertriebsgesellschaft Mbh & Co Produktions-Kommanditgesellschaft
WIK Elektro Hausgeraete
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 Wik Elektro-Hausgerate-Vertriebsgesellschaft Mbh & Co Produktions-Kommanditgesellschaft, WIK Elektro Hausgeraete filed Critical Wik Elektro-Hausgerate-Vertriebsgesellschaft Mbh & Co Produktions-Kommanditgesellschaft
Publication of EP0171775A2 publication Critical patent/EP0171775A2/en
Publication of EP0171775A3 publication Critical patent/EP0171775A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/70—Structural association with built-in electrical component with built-in switch
    • H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • H01R13/7135—Structural association with built-in electrical component with built-in switch the switch being a safety switch with ground fault protector

Definitions

  • the invention relates to a safety switch, in particular a socket with a plug which can be plugged into another socket, with a fault current measuring device and a circuit breaker which interrupts the circuit to be closed or closed when fault current is determined.
  • Safety switches designed as sockets are known, in which the circuit breaker is actuated via a control current after the fault current has been determined and is brought into the circuit breaker off position.
  • Such sockets are disadvantageous in that a control current is required for the actuation of the circuit breaker. That is an uncertainty factor. If the control current, which cannot be controlled anyway, fails, then a protective circuit is excluded when determining the residual current. Residual current determination means the determination of current differences between the conductor leading to the consumer and returning conductor.
  • the invention is based on the object of creating a safety switch of the type described in the introduction, in which the actuation of the circuit breaker does not require control current in the event of fault current determination.
  • the safety switch according to the invention in which the previously derived and stated object is achieved, is initially and essentially characterized in that an electromagnet - with a coil and a core - is connected to the fault current measuring device, the coil of which is in electrical connection with the fault current measuring device and the core of which is in mechanical connection with the circuit breaker and, in the event of a coil dropping as a result of residual current detection, the circuit breaker is brought into the circuit breaker off position by means of a return spring acting on the core, and the current-carrying coil with the entrained core and tensioning of the return spring from the circuit breaker Off position in the circuit breaker on position is adjustable by means of an adjusting mechanism.
  • the circuit breaker is thus transferred mechanically to the circuit breaker off position when residual current is determined, so that the otherwise usual uncertainty factor, control current, is eliminated.
  • the coil of the electromagnet is dimensioned so that the core is not retractable from the circuit breaker off position against the action of its return spring, but only "sticks" in the current-carrying coil and is consequently carried away by the coil when it is is transferred from the protective conductor off position to the circuit breaker on position by means of the adjusting mechanism.
  • the coil falls off, consequently either the core cannot be taken away from the coil at all, or - due to its action by the return spring - snaps out of the coil, so that the circuit breaker is in the Circuit breaker off position remains or returned to circuit breaker off position.
  • care is taken that the coil of the electromagnet must always be moved back to the circuit breaker off position if the core and above the circuit breaker are to be moved to the circuit breaker on position. This prevents z. B. with the plug inserted into the socket, the connected consumer can consume without further power if a previously determined fault current is no longer present and consequently the coil is excited again via the fault current measuring device.
  • the core of the electromagnet remains positioned in the circuit breaker off position and must be transferred from the excited coil to the circuit breaker on position. This can only be achieved by moving the coil from the circuit breaker on position to the circuit breaker off position and back with the help of the actuating mechanism to be actuated from the outside and consequently only with the help of an operator.
  • the invention provides that a pivot lever is articulated on the core of the electromagnet on the one hand and on the fixedly anchored return spring on the other hand and the pivot lever is rotatably mounted between two articulation points on a switching shaft for the circuit breaker and works against a stop with the core emerging from the coil , so that the assignment of core and coil is retained even when the core emerges from the coil.
  • a relatively simple mechanism for actuating the circuit breaker is implemented in the embodiment of a lever mechanism.
  • the coil of the electromagnet is arranged on a slide which is guided in the switch housing and is effectively acted upon by a return spring and a spring-loaded locking lever in the circuit breaker on position, and the locking lever is pivotably mounted and engages behind the locking lever a locking cam on the slide in the locking position. Consequently, the coil or its slide can only be returned to the circuit breaker-off position by actuating the adjusting mechanism in order to take up the core again, for which purpose it is necessary to transfer the locking lever into the unlocking position.
  • a further preferred embodiment of the safety switch according to the invention is characterized in that the adjusting mechanism has a rotary knob accessible outside the switch housing with a pinion on its bearing shaft, and the pinion engages with a toothed rack on the slide, into the rotary knob an unlocking plunger guided through the hollow bearing shaft is axially adjustable against spring action and the unlocking plunger pushes back the locking lever in the unlocked position in the axially adjusted position.
  • the rotary knob thus serves on the one hand to move the carriage or the spool and on the other hand receives the unlocking plunger for the locking lever.
  • a preferred embodiment of the safety switch according to the invention is further characterized in that the switch housing with the fault current measuring device, the circuit breaker, the electromagnet and the actuating mechanism is designed as a module which can be inserted into the socket.
  • a safety switch in particular a socket with a plug that can be plugged into another socket, is implemented, which does not require control current for the actuation of the circuit breaker, but rather ensures mechanical actuation of the circuit breaker when fault current is determined , for which a relatively simple and reliable construction is realized.
  • the circuit breaker functions independently of an error source which is present in the prior art, namely independently of a control current.
  • a socket 1 is shown as a safety switch, specifically a socket which can be plugged into a wall socket and which has a fault current measuring device 2, connected to two electrical conductors 3, and a circuit breaker 4 inserted into the conductor 3;
  • the circuit breaker 4 interrupts the circuit to be closed or closed when residual current is determined.
  • an electromagnet - with a coil 5 and a core 6 - is connected, the coil 5 being in electrical connection with the fault current measuring device 2, while the core 6 is in mechanical connection with the circuit breaker 4 and the circuit breaker 4 as a result Leakage current detection of falling coil 5 is transferred to the circuit breaker off position by means of a return spring 7 engaging the core 6.
  • the energized, that is excited coil 5 of the electromagnet can be adjusted by taking the immersed core 6 and tensioning the return spring 7 from the circuit breaker off position into the circuit breaker on position by means of an actuating mechanism that can be actuated from the outside.
  • a pivot lever 9 is articulated, which is rotatably mounted between two articulation points on a switching shaft 10 for the circuit breaker 4 and works against a stop 11 when the core 6 emerges from the coil 5 , which prevents an arbitrary wide exit of the core 6.
  • the coil 5 is arranged on a slide 13 guided in the switch housing 12, which is effective in the circuit breaker on position by a return spring 14 and by a spring-loaded locking lever 15 is applied, wherein the locking lever 15 is pivotally mounted in the switch housing 12 and engages behind a locking cam 16 on the carriage 13 in the locking position.
  • the adjusting mechanism has a rotary knob 8 accessible outside the switch housing 12 with a pinion 17 on a bearing shaft, which meshes with a toothed rack 18 on the slide 13.
  • a rotary knob 8 accessible outside the switch housing 12 with a pinion 17 on a bearing shaft, which meshes with a toothed rack 18 on the slide 13.
  • an unlocking plunger 19 guided through the hollow bearing shaft is axially adjustable against spring action; the unlocking plunger 19 presses the locking lever 15 back into the unlocked position in the axially adjusted or depressed position.
  • the switch housing 12 with the residual current measuring device 2, the circuit breaker 4, the electromagnet and the actuating mechanism is designed as a module which can be inserted into the socket 1.

Landscapes

  • Breakers (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Air Bags (AREA)
  • Control Of Combustion (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

A safety switch is shown and described, namely a socket (1), to be precise a socket (1) which can be inserted with a plug into a wall socket, the socket (1) having an earth-leakage current measuring device (2) and a protection switch (4) which interrupts the circuit to be closed or opened if an earth-leakage current is detected. In the safety switch according to the invention, the operation of the protection switch (4) in the event of detection of an earth-leakage current takes place without any control current, such that an electromagnet - having a coil (5) and a core (6) - is connected to the earth-leakage current measuring device (2), whose coil (5) is electrically connected to the earth-leakage current measuring device (2), and whose core is mechanically connected to the protection switch (4) and transfers the protection switch (4) into the protection switch "off" position following detection of an earth-leakage current which de-energises the coil (5), by means of a return spring (7) engaging with the core (6), and the coil (5) which is subjected to current is adjustable, by means of an adjusting mechanism, taking with it the immersed core (6) and tensioning the return spring (7), from the protection switch "off" position to the protection switch "on" position.

Description

Die Erfindung betrifft einen Sicherheitsschalter, insbesondere eine Steckdose mit einem in eine andere Steckdose einsteckbaren Stecker, mit einer Fehlerstrommeßeinrichtung und einem bei Fehlerstromermittlung den zu schließenden bzw. geschlossenen Stromkreis unterbrechenden Schutzschalter.The invention relates to a safety switch, in particular a socket with a plug which can be plugged into another socket, with a fault current measuring device and a circuit breaker which interrupts the circuit to be closed or closed when fault current is determined.

Es sind als Steckdosen ausgeführte Sicherheitsschalter bekannt, bei denen nach Fehlerstromermittlung der Schutzschalter über einen Steuerstrom betätigt und in die Schutzschalter-Aus-Stellung überführt wird. Derartige Steckdosen sind insofern nachteilig, als für die Betätigung des Schutzschalters eben ein Steuerstrom erforderlich ist. Das ist ein Unsicherheitsfaktor. Denn fällt der ohnehin nicht kontrollierbare Steuerstrom aus, dann ist Schutzschaltung bei Fehlerstromermittlung ausgeschlossen. Fehlerstromermittlung meint die Ermittlung von Stromdifferenzen zwischen dem zu dem Verbraucher hinführenden und rückführenden Leiter.Safety switches designed as sockets are known, in which the circuit breaker is actuated via a control current after the fault current has been determined and is brought into the circuit breaker off position. Such sockets are disadvantageous in that a control current is required for the actuation of the circuit breaker. That is an uncertainty factor. If the control current, which cannot be controlled anyway, fails, then a protective circuit is excluded when determining the residual current. Residual current determination means the determination of current differences between the conductor leading to the consumer and returning conductor.

Der Erfindung liegt nun die Aufgabe zugrunde, einen Sicherheitsschalter der eingangs beschriebenen Art zu schaffen, bei dem die Betätigung des Schutzschalters im Falle der Fehlerstromermittlung ohne Steuerstrom auskommt.The invention is based on the object of creating a safety switch of the type described in the introduction, in which the actuation of the circuit breaker does not require control current in the event of fault current determination.

Der erfindungsgemäße Sicherheitsschalter, bei dem die zuvor hergeleitete und dargelegte Aufgabe gelöst ist, ist zunächst und im wesentlichen dadurch gekennzeichnet, daß an die Fehlerstrommeßeinrichtung ein Elektromagnet - mit einer Spule und einem Kern - angeschlossen ist, dessen Spule in elektrischer Verbindung mit der Fehlerstrommeßeinrichtung steht und dessen Kern mit dem Schutzschalter in mechanischer Verbindung steht und den Schutzschalter bei infolge Fehlerstromermittlung abfallender Spule mittels einer an den Kern angreifenden Rückholfeder in die Schutzschalter-Aus-Stellung überführt, und die strombeaufschlagte Spule unter Mitnahme des eingetauchten Kerns und Spannen der Rückholfeder von der Schutzschalter-Aus-Stellung in die Schutzschalter-Ein-Stellung mittels eines Stellmechanismus verstellbar ist.The safety switch according to the invention, in which the previously derived and stated object is achieved, is initially and essentially characterized in that an electromagnet - with a coil and a core - is connected to the fault current measuring device, the coil of which is in electrical connection with the fault current measuring device and the core of which is in mechanical connection with the circuit breaker and, in the event of a coil dropping as a result of residual current detection, the circuit breaker is brought into the circuit breaker off position by means of a return spring acting on the core, and the current-carrying coil with the entrained core and tensioning of the return spring from the circuit breaker Off position in the circuit breaker on position is adjustable by means of an adjusting mechanism.

Nach der Lehre der Erfindung erfolgt also die Überführung des Schutzschalters in die Schutzschalter-Aus-Stellung bei Fehlerstromermittlung mechanisch, so daß der sonst übliche Unsicherheitsfaktor Steuerstrom eliminiert ist. Dabei ist die Spule des Elektromagneten so dimensioniert, daß der Kern nicht entgegen der Wirkung seiner Rückholfeder aus der Schutzschalter-Aus-Stellung in die Spule einziehbar ist, sondern lediglich in der strombeaufschlagten Spule "klebt" und folglich von der Spule mitgenommen wird, wenn diese aus der Schutzleiter-Aus-Stellung in die Schutzschalter-Ein-Stellung mittels des Stellmechanismus überführt wird. Sobald ein Fehlerstrom von der Fehlerstrommeßeinrichtung ermittelt wird, fällt die Spule ab, läßt sich folglich entweder der Kern erst gar nicht von der Spule mitnehmen oder schnellt - infolge seiner Beaufschlagung durch die Rückholfeder - aus der Spule heraus, so daß der Schutzschalter von vornherein in der Schutzschalter-Aus-Stellung verbleibt oder in die Schutzschalter-Aus-Stellung zurückgeführt wird. Jedenfalls ist dafür Sorge getragen, daß die Spule des Elektromagneten stets in die Schutzschalter-Aus-Stellung zurückgefahren werden muß, wenn der Kern und darüber der Schutzschalter in die Schutzschalter-Ein-Stellung überführt werden sollen. Dadurch wird verhindert, daß z. B. bei in die Steckdose eingestecktem Stecker der angeschlossene Verbraucher ohne weiteres Leistung aufnehmen kann, wenn ein zuvor ermittelter Fehlerstrom nicht länger vorliegt und folglich die Spule über die Fehlerstrommeßeinrichtung wieder erregt wird. Vielmehr bleibt auch in diesem Fall der Kern des Elektromagneten in der Schutzschalter-Aus-Stellung positioniert und muß von der erregten Spule in die Schutzschalter-Ein-Stellung überführt werden. Das gelingt nur über das Verfahren der Spule aus der Schutzschalter-Ein-Stellung in die Schutzschalter-Aus-Stellung und zurück mit Hilfe des von außen zu betätigenden Stellmechanismus und folglich nur mit Hilfe einer Bedienungsperson.According to the teaching of the invention, the circuit breaker is thus transferred mechanically to the circuit breaker off position when residual current is determined, so that the otherwise usual uncertainty factor, control current, is eliminated. The coil of the electromagnet is dimensioned so that the core is not retractable from the circuit breaker off position against the action of its return spring, but only "sticks" in the current-carrying coil and is consequently carried away by the coil when it is is transferred from the protective conductor off position to the circuit breaker on position by means of the adjusting mechanism. As soon as a fault current is determined by the fault current measuring device, the coil falls off, consequently either the core cannot be taken away from the coil at all, or - due to its action by the return spring - snaps out of the coil, so that the circuit breaker is in the Circuit breaker off position remains or returned to circuit breaker off position. In any case, care is taken that the coil of the electromagnet must always be moved back to the circuit breaker off position if the core and above the circuit breaker are to be moved to the circuit breaker on position. This prevents z. B. with the plug inserted into the socket, the connected consumer can consume without further power if a previously determined fault current is no longer present and consequently the coil is excited again via the fault current measuring device. Rather, in this case too, the core of the electromagnet remains positioned in the circuit breaker off position and must be transferred from the excited coil to the circuit breaker on position. This can only be achieved by moving the coil from the circuit breaker on position to the circuit breaker off position and back with the help of the actuating mechanism to be actuated from the outside and consequently only with the help of an operator.

Im einzelnen gibt es verschiedene Möglichkeiten, den erfindungsgemäßen Sicherheitsschalter auszugestalten und weiterzubilden, was im folgenden nur beispielhaft dargestellt werden soll.In particular, there are various options for designing and developing the safety switch according to the invention, which is only to be illustrated below as an example.

Zunächst sieht die Erfindung vor, daß an dem Kern des Elektromagneter einerseits und an der ortsfest verankerten Rückholfeder andererseits ein Schwenkhebel angelenkt ist und der Schwenkhebel zwischen beiden Anlenkpunkten auf einer Schaltwelle für den Schutzschalter drehfest gelagert ist und bei aus der Spule austretendem Kern gegen einen Anschlag arbeitet, so daß auch bei aus der Spule ausgetretenem Kern die Zuordnung von Kern und Spule erhalten bleibt. Darüber hinaus wird ein für die Betätigung des Schutzschalters verhältnismäßig einfacher Mechanismus in der Ausführungsform eines Hebelgetriebes verwirklicht.First, the invention provides that a pivot lever is articulated on the core of the electromagnet on the one hand and on the fixedly anchored return spring on the other hand and the pivot lever is rotatably mounted between two articulation points on a switching shaft for the circuit breaker and works against a stop with the core emerging from the coil , so that the assignment of core and coil is retained even when the core emerges from the coil. In addition, a relatively simple mechanism for actuating the circuit breaker is implemented in the embodiment of a lever mechanism.

Bei einer bevorzugten Ausführungsform des erfindungsgemäßen Sicherheitsschalters ist die Spule des Elektromagneten auf einem im Schaltergehäuse geführten Schlitten angeordnet, der in der Schutzschalter-Ein-Stellung von einer Rückstellfeder und von einem federbelasteten Verriegelungshebel wirksam beaufschlagt ist, und ist der Verriegelungshebel schwenkbar gelagert und hintergreift der Verriegelungshebel in Verriegelungsstellung einen \erriegelungsnocken an dem Schlitten. Folglich kann die Spule bzw. ihr Schlitten nur durch Betätigung des Stellmechanismus in die Schutzschalter-Aus-Stellung zur erneuten Aufnahme des Kerns zurückgeführt werden, wozu die überführung des Verriegelungshebels in Entriegelungsstellung erforderlich ist.In a preferred embodiment of the safety switch according to the invention, the coil of the electromagnet is arranged on a slide which is guided in the switch housing and is effectively acted upon by a return spring and a spring-loaded locking lever in the circuit breaker on position, and the locking lever is pivotably mounted and engages behind the locking lever a locking cam on the slide in the locking position. Consequently, the coil or its slide can only be returned to the circuit breaker-off position by actuating the adjusting mechanism in order to take up the core again, for which purpose it is necessary to transfer the locking lever into the unlocking position.

Eine weiter bevorzugte Ausführungsform des erfindungsgemäßen Sicherheitsschalters ist dadurch gekennzeichnet, daß der Stellmechanismus einen außerhalb des Schaltergehäuses zugänglichen Drehknopf mit einem Ritzel auf seiner Lagerwelle aufweist und das Ritzel mit einer Zahnstange an dem Schlitten in Eingriff steht, in den Drehknopf ein durch die hohle Lagerwelle hindurchgeführter Entriegelungsstößel entgegen Federwirkung axial verstellbar ist und der Entriegelungsstößel in axial verstellter Position den Verriegelungshebel in Entriegelungsstellung zurückdrückt. Der Drehknopf dient also einerseits zum Verfahren des Schlittens bzw. der Spule und nimmt andererseits den Entriegelungsstößel für den Verriegelungshebel auf.A further preferred embodiment of the safety switch according to the invention is characterized in that the adjusting mechanism has a rotary knob accessible outside the switch housing with a pinion on its bearing shaft, and the pinion engages with a toothed rack on the slide, into the rotary knob an unlocking plunger guided through the hollow bearing shaft is axially adjustable against spring action and the unlocking plunger pushes back the locking lever in the unlocked position in the axially adjusted position. The rotary knob thus serves on the one hand to move the carriage or the spool and on the other hand receives the unlocking plunger for the locking lever.

Schließlich ist eine bevorzugte Ausführungsform des erfindungsgemäßen Sicherheitsschalters weiter dadurch gekennzeichnet, daß das Schaltergehäuse mit der Fehlerstrommeßeinrichtung, dem Schutzschalter, dem Elektromagneten und dem Stellmechanismus als ein in die Steckdose einsetzbarer Baustein ausgebildet ist.Finally, a preferred embodiment of the safety switch according to the invention is further characterized in that the switch housing with the fault current measuring device, the circuit breaker, the electromagnet and the actuating mechanism is designed as a module which can be inserted into the socket.

Die durch die Erfindung erreichten Vorteile sind zusammengefaßt darin zu sehen, daß ein Sicherheitsschalter, insbesondere eine Steckdose mit einem in eine andere Steckdose einsteckbaren Stecker, verwirklicht ist, der für die Betätigung des Schutzschalters ohne Steuerstrom auskommt, vielmehr eine mechanische Betätigung des Schutzschalters bei Fehlerstromermittlung sicherstellt, für das eine verhältnismäßig einfache und funktionssichere Bauweise verwirklicht ist. Tatsächlich funktioniert bei dem erfindungsgemäßen Sicherheitsschalter der Schutzschalter unabhängig von einer im Stand der Technik vorhandenen Fehlerquelle, nämlich unabhängig von einem Steuerstrom.The advantages achieved by the invention are summarized in the fact that a safety switch, in particular a socket with a plug that can be plugged into another socket, is implemented, which does not require control current for the actuation of the circuit breaker, but rather ensures mechanical actuation of the circuit breaker when fault current is determined , for which a relatively simple and reliable construction is realized. In fact, in the safety switch according to the invention, the circuit breaker functions independently of an error source which is present in the prior art, namely independently of a control current.

Im folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert; es zeigen

  • Fig. 1 in schematischer Darstellung, die Funktionsweise des erfindungsgemäßen, als Steckdose ausgeführten Sicherheitsschalters, mit ausgezogenen Linien vor Fehlerstromermittlung, mit gestrichelten Linien nach Fehlerstromermittlung,
  • Fig. 2 einen Baustein für den Gegenstand nach Fig. 1 mit Fehlerstrommeßeinrichtung, Schutzschalter, Elektromagnet und Stellmechanismus, in Seitenansicht,
  • Fig. 3 eine Ansicht von oben auf den Gegenstand nach Fig. 2, bei abgenommenem Drehknopf,
  • Fig. 4 eine Ansicht von unten auf den Gegenstand nach Fig. 2,
  • Fig. 5 den Gegenstand nach Fig. 2 bei eingeschaltetem Schutzschalter und
  • Fig. 6 den Gegenstand nach Fig. 3 bei eingeschaltetem Schutzschalter.
In the following the invention is explained in more detail with reference to a drawing showing only one embodiment; show it
  • 1 is a schematic representation of the operation of the safety switch according to the invention, designed as a socket, with solid lines before fault current determination, with dashed lines after fault current determination,
  • 2 shows a module for the object according to FIG. 1 with fault current measuring device, circuit breaker, electromagnet and actuating mechanism, in a side view,
  • 3 is a top view of the object of FIG. 2, with the knob removed,
  • 4 is a bottom view of the object of FIG. 2,
  • Fig. 5 shows the object of FIG. 2 with the circuit breaker and
  • Fig. 6 shows the subject of Fig. 3 with the circuit breaker turned on.

In den Figuren ist als Sicherheitsschalter eine Steckdose 1 dargestellt, und zwar eine mit einem Stecker in eine Wandsteckdose einsteckbare Steckdose, die eine Fehlerstrommeßeinrichtung 2, angeschlossen an zwei elektrische Leiter 3, und einen in die Leiter 3 eingesetzten Schutzschalter 4 aufweist; der Schutzschalter 4 unterbricht bei Fehlerstromermittlung den zu schließenden bzw. geschlossenen Stromkreis.In the figures, a socket 1 is shown as a safety switch, specifically a socket which can be plugged into a wall socket and which has a fault current measuring device 2, connected to two electrical conductors 3, and a circuit breaker 4 inserted into the conductor 3; The circuit breaker 4 interrupts the circuit to be closed or closed when residual current is determined.

An die Fehlerstrommeßeinrichtung 2 ist ein Elektromagnet - mit einer Spule 5 und einer Kern 6 - angeschlossen, wobei die Spule 5 in elektrischer Verbindung mit der Fehlerstrommeßeinrichtung 2 steht, während der Kern 6 mit dem Schutzschalter 4 in mechanischer Verbindung steht und den Schutzschalter 4 bei infolge Fehlerstromermittlung abfallender Spule 5 mittels einer an den Kern 6 angreifenden Rückholfeder 7 in die Schutzschalter-Aus-Stellung überführt.At the fault current measuring device 2, an electromagnet - with a coil 5 and a core 6 - is connected, the coil 5 being in electrical connection with the fault current measuring device 2, while the core 6 is in mechanical connection with the circuit breaker 4 and the circuit breaker 4 as a result Leakage current detection of falling coil 5 is transferred to the circuit breaker off position by means of a return spring 7 engaging the core 6.

Die strombeaufschlagte, also erregte Spule 5 des Elektromagneten ist unter Mitnahme des eingetauchten Kerns 6 und Spannen der Rückholfeder 7 von der Schutzschalter-Aus-Stellung in die Schutzschalter-Ein-Stellung mittels eines von außen zu betätigenden Stellmechanismus verstellbar. An dem Kern 6 des Elektromagneten einerseits und an der ortsfest verankerten Rückholfeder 7 andererseits ist ein Schwenkhebel 9 angelenkt, der zwischen beiden Anlenkpunkten auf einer Schaltwelle 10 für den Schutzschalter 4 drehfest gelagert ist und bei aus der Spule 5 austretendem Kern 6 gegen einen Anschlag 11 arbeitet, der einen beliebig weiten Austritt des Kerns 6 verhindert. Die Spule 5 ist auf einem im Schaltergehäuse 12 geführten Schlitten 13 angeordnet, der in der Schutzschalter-Ein-Stellung von einer Rückstellfeder 14 und von einem federbelasteten Verriegelungshebel 15 wirksam beaufschlagt ist, wobei der Verriegelungshebel 15 im Schaltergehäuse 12 schwenkbar gelagert ist und in Verriegelungsstellung einen Verriegelungsnocken 16 an dem Schlitten 13 hintergreift.The energized, that is excited coil 5 of the electromagnet can be adjusted by taking the immersed core 6 and tensioning the return spring 7 from the circuit breaker off position into the circuit breaker on position by means of an actuating mechanism that can be actuated from the outside. On the core 6 of the electromagnet on the one hand and on the fixedly anchored return spring 7 on the other hand, a pivot lever 9 is articulated, which is rotatably mounted between two articulation points on a switching shaft 10 for the circuit breaker 4 and works against a stop 11 when the core 6 emerges from the coil 5 , which prevents an arbitrary wide exit of the core 6. The coil 5 is arranged on a slide 13 guided in the switch housing 12, which is effective in the circuit breaker on position by a return spring 14 and by a spring-loaded locking lever 15 is applied, wherein the locking lever 15 is pivotally mounted in the switch housing 12 and engages behind a locking cam 16 on the carriage 13 in the locking position.

Der Stellmechanismus weist einen außerhalb des Schaltergehäuses 12 zugänglichen Drehknopf 8 mit einem Ritzel 17 auf einer Lagerwelle auf, welches mit einer Zahnspange 18 am Schlitten 13 in Eingriff steht. In dem Drehknopf 8 ist ein durch die hohle Lagerwelle hindurchgeführter Entriegelungsstößel 19 entgegen Federwirkung axial verstellbar; der Entriegelungsstössel 19 drückt in axial verstellter bzw. niedergedrückter Position den Verriegelungshebel 15 in Entriegelungsstellung zurück.The adjusting mechanism has a rotary knob 8 accessible outside the switch housing 12 with a pinion 17 on a bearing shaft, which meshes with a toothed rack 18 on the slide 13. In the rotary knob 8, an unlocking plunger 19 guided through the hollow bearing shaft is axially adjustable against spring action; the unlocking plunger 19 presses the locking lever 15 back into the unlocked position in the axially adjusted or depressed position.

Das Schaltergehäuse 12 mit der Fehlerstrommeßeinrichtung 2, dem Schutzschalter 4, dem Elektromagneten und dem Stellmechanismus ist als ein in die Steckdose 1 einsetzbarer Baustein ausgebildet.The switch housing 12 with the residual current measuring device 2, the circuit breaker 4, the electromagnet and the actuating mechanism is designed as a module which can be inserted into the socket 1.

Claims (5)

1. Sicherheitsschalter, insbesondere Steckdose mit einem in eine andere Steckdose einsteckbaren Stecker, mit einer Fehlerstrommeßeinrichtung und einem bei Fehlerstromermittlung den zu schließenden bzw. geschlossenen Stromkreis unterbrechenden Schutzschalter, dadurch gekenn- zeichnet, daß an die Fehlerstrommeßeinrichtung (2) ein Elektromagnet - mit einer Spule (5) und einem Kern (6) - angeschlossen ist, dessen Spule (5) in elektrischer Verbindung mit der Fehlerstrommeßeinrichtung (2) steht und dessen Kern (6) mit dem Schutzschalter (4) in mechanischer Verbindung steht und den Schutzschalter (4) bei infolge Fehlerstromermittlung abfallender Spule (5) mittels einer an den Kern (6) angreifenden Rückholfeder (7) in die Schutzschalter-Aus-Stellung überführt, und die strombeaufschlagte Spule (5) unter Mitnahme des eingetauchten Kerns (6) und Spannen der Rückholfeder (7) von der Schutzschalter-Aus-Stellung in die Schutzschalter-Ein-Stellung mittels eines Stellmechanismus verstellbar ist.1. Safety switch, in particular a socket with a plug which can be plugged into another socket, with a fault current measuring device and a circuit breaker which interrupts the circuit to be closed or closed when fault current is determined, characterized in that an electromagnet - with a coil - is connected to the fault current measuring device (2) (5) and a core (6) - is connected, the coil (5) of which is in electrical connection with the fault current measuring device (2) and whose core (6) is in mechanical connection with the circuit breaker (4) and the circuit breaker (4) in the event of a coil (5) dropping as a result of residual current detection, transferred to the circuit breaker-off position by means of a return spring (7) engaging the core (6), and the current-carrying coil (5) taking the immersed core (6) with it and tensioning the return spring ( 7) is adjustable from the circuit breaker off position to the circuit breaker on position by means of an adjusting mechanism. 2. Sicherheitsschalter nach Anspruch 1, dadurch gekennzeichnet, daß an dem Kern (6) des Elektromagneten einerseits und an der ortsfest verankerten Rückholfeder (7) andererseits ein Schwenkhebel (9) angelenkt ist und der Schwenkhebel (9) zwischen beiden Anlenkpunkten auf einer Schaltwelle (10) für den Schutzschalter (4) drehfest gelagert ist und bei aus der Spule (5) austretendem Kern (6) gegen einen Anschlag (11) arbeitet.2. Safety switch according to claim 1, characterized in that on the core (6) of the electromagnet on the one hand and on the fixedly anchored return spring (7) on the other hand a pivot lever (9) is articulated and the pivot lever (9) between the two articulation points on a control shaft ( 10) for the circuit breaker (4) is rotatably mounted and works against a stop (11) when the core (6) emerges from the coil (5). 3. Sicherheitsschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Spule (5) des Elektromagneten auf einem im Schaltergehäuse (12) geführten Schlitten (13) angeordnet ist, der in der Schutzschalter-Ein-Stellung von einer Rückstellfeder (14) und von einem federbelasteten Verriegelungshebel (15) wirksam beaufschlagt ist, und der Verriegelungshebel (15) schwenkbar gelagert ist und in Verriegelungsstellung einen Verriegelungsnocken (16) an dem Schlitten (13) hintergreift.3. Safety switch according to claim 1 or 2, characterized in that the coil (5) of the electromagnet is arranged on a slide (13) guided in the switch housing (12), which in the circuit breaker on position by a return spring (14) and is effectively acted upon by a spring-loaded locking lever (15), and the locking lever (15) is pivotally mounted and in the locking position engages behind a locking cam (16) on the carriage (13). 4. Sicherheitsschalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Stellmechanismus einen außerhalb des Schaltergehäuses (12) zugänglichen Drehkopf (8) mit einem Ritzel (17) auf seiner Lagerwelle aufweist und das Ritzel (17) mit einer Zahnspange (18) an dem Schlitten (13) in Eingriff steht, in dem Drehknopf (8) ein durch die hohle Lagerwelle hindurchgeführter Entriegelungsstößel (19) entgegen Federwirkung axial verstellbar ist und der Entriegelungsstößel (19) in axial verstellter Position den Verriegelungshebel (15) in Entriegelungsstellung zurückdrückt.4. Safety switch according to one of claims 1 to 3, characterized in that the adjusting mechanism has an outside of the switch housing (12) accessible rotary head (8) with a pinion (17) on its bearing shaft and the pinion (17) with braces (18 ) is engaged on the slide (13), in the rotary knob (8) an unlocking plunger (19) guided through the hollow bearing shaft is axially adjustable against spring action and the unlocking plunger (19) presses the locking lever (15) back into the unlocking position in the axially adjusted position . 5. Sicherheitsschalter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Schaltergehäuse (12) mit der Fehlerstrommeßeinrichtung (2), dem Schutzschalter (4), dem Elektromagneten und dem Stellmechanismus als ein in die Steckdose (1) einsetzbarer Baustein ausgebildet ist.5. Safety switch according to one of claims 1 to 4, characterized in that the switch housing (12) with the residual current measuring device (2), the circuit breaker (4), the electromagnet and the actuating mechanism is designed as a component which can be inserted into the socket (1) .
EP85110059A 1984-08-11 1985-08-09 Safety switch Withdrawn EP0171775A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3429647 1984-08-11
DE19843429647 DE3429647A1 (en) 1984-08-11 1984-08-11 SOCKET, ESPECIALLY INSERTED INTO A WALL SOCKET WITH PLUG

Publications (2)

Publication Number Publication Date
EP0171775A2 true EP0171775A2 (en) 1986-02-19
EP0171775A3 EP0171775A3 (en) 1987-04-29

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ID=6242874

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Application Number Title Priority Date Filing Date
EP85110059A Withdrawn EP0171775A3 (en) 1984-08-11 1985-08-09 Safety switch

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EP (1) EP0171775A3 (en)
JP (1) JPS61107629A (en)
KR (1) KR860002123A (en)
AU (1) AU4597085A (en)
DE (1) DE3429647A1 (en)
DK (1) DK362885A (en)
ES (1) ES8700496A1 (en)
FI (1) FI853021L (en)
NO (1) NO853152L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365274A2 (en) * 1988-10-21 1990-04-25 Ericson Manufacturing Company Resettable ground fault circuit interrupter
EP1363947A2 (en) * 2001-03-02 2003-11-26 Ortho-McNeil Pharmaceutical, Inc. The guinea pig proteinase-activated receptor 4 and its activating peptide

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT388625B (en) * 1987-11-19 1989-08-10 Bremel Hans PROTECTIVE DEVICE FOR ELECTRICAL POWER SUPPLIES, IN PARTICULAR HAND DEVICES
DE4124190A1 (en) * 1991-07-20 1993-01-21 Abb Patent Gmbh Network protection circuit for monitoring and isolating due to fault - measures current difference between at least one outgoing lead and neutral lead to detect fault or earth leakage
DE10146828A1 (en) * 2001-09-18 2003-04-24 Euchner Gmbh & Co Locking system of a safety switch with a read head and an actuator

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Publication number Priority date Publication date Assignee Title
DE2256585A1 (en) * 1971-11-17 1973-05-30 Saparel ELECTRICAL CONNECTION WITH DIFFERENTIAL PROTECTION
DE2246845A1 (en) * 1972-09-23 1974-03-28 Bbc Brown Boveri & Cie ELECTRICAL CONNECTOR PROTECTIVE DEVICE
US4079344A (en) * 1976-08-30 1978-03-14 General Electric Company Portable ground fault circuit interrupting device

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Publication number Priority date Publication date Assignee Title
DE1965784U (en) * 1967-03-14 1967-08-10 Stotz Kontakt Gmbh ELECTRIC SOCKET WITH FAULT CURRENT PROTECTION.
DE7034601U (en) * 1970-09-17 1971-04-01 Kober Manpar Ag FAULT CURRENT SWITCH.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2256585A1 (en) * 1971-11-17 1973-05-30 Saparel ELECTRICAL CONNECTION WITH DIFFERENTIAL PROTECTION
DE2246845A1 (en) * 1972-09-23 1974-03-28 Bbc Brown Boveri & Cie ELECTRICAL CONNECTOR PROTECTIVE DEVICE
US4079344A (en) * 1976-08-30 1978-03-14 General Electric Company Portable ground fault circuit interrupting device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365274A2 (en) * 1988-10-21 1990-04-25 Ericson Manufacturing Company Resettable ground fault circuit interrupter
EP0365274A3 (en) * 1988-10-21 1991-08-07 Ericson Manufacturing Company Resettable ground fault circuit interrupter
EP1363947A2 (en) * 2001-03-02 2003-11-26 Ortho-McNeil Pharmaceutical, Inc. The guinea pig proteinase-activated receptor 4 and its activating peptide

Also Published As

Publication number Publication date
DK362885D0 (en) 1985-08-09
DE3429647C2 (en) 1987-08-13
ES546023A0 (en) 1986-10-16
EP0171775A3 (en) 1987-04-29
ES8700496A1 (en) 1986-10-16
KR860002123A (en) 1986-03-26
JPS61107629A (en) 1986-05-26
NO853152L (en) 1986-02-12
FI853021L (en) 1986-02-12
AU4597085A (en) 1986-02-13
DE3429647A1 (en) 1986-02-20
DK362885A (en) 1986-02-12
FI853021A0 (en) 1985-08-06

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