EP2345057B1 - Electrical overcurrent relay with a borne operating lever - Google Patents

Electrical overcurrent relay with a borne operating lever Download PDF

Info

Publication number
EP2345057B1
EP2345057B1 EP09744954.0A EP09744954A EP2345057B1 EP 2345057 B1 EP2345057 B1 EP 2345057B1 EP 09744954 A EP09744954 A EP 09744954A EP 2345057 B1 EP2345057 B1 EP 2345057B1
Authority
EP
European Patent Office
Prior art keywords
lever
actuating lever
bimetallic strip
overcurrent relay
snap
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.)
Active
Application number
EP09744954.0A
Other languages
German (de)
French (fr)
Other versions
EP2345057A1 (en
Inventor
Richard Kommert
Corinna Raule
Thomas Keilbach
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.)
ABB AG Germany
Original Assignee
ABB AG Germany
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 ABB AG Germany filed Critical ABB AG Germany
Publication of EP2345057A1 publication Critical patent/EP2345057A1/en
Application granted granted Critical
Publication of EP2345057B1 publication Critical patent/EP2345057B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H01H71/162—Electrothermal mechanisms with bimetal element with compensation for ambient temperature
    • 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
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being unbalance of two or more currents or voltages
    • H01H83/223—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being unbalance of two or more currents or voltages with bimetal elements
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7427—Adjusting only the electrothermal mechanism
    • H01H71/7445—Poly-phase adjustment

Definitions

  • the invention relates to an electrical overcurrent relay, which comprises a snap-action switching mechanism which can be snapped over between two stable switching positions, an actuating lever which causes the snap-action mechanism to snap over in the event of an overcurrent, and a main and a compensation bimetal, according to the preamble of claim 1.
  • a housing in particular terminals for the main current path, terminals for the or the auxiliary current paths, a main bimetallic in the main current path, at least one contact point for opening or closing the auxiliary current path, a snap-action switch for switching the at least one contact point between two switching positions, an actuating lever which is pivoted at a corresponding actuation by a certain trip path, and thereby acts with its operating end on an operating point of the snap-action mechanism, thereby causing the snap-action mechanism to be snapped, and a slide mechanism, the deflection of the main bimetallic strip transfers to the operating lever.
  • the function of a generic overcurrent relay is the following. Due to the current heat of the current in the main current path, the main bimetal bends. If the current exceeds a certain critical size, the deflection is strong enough to over the coupling of the slide mechanism, the operating lever so far to pivot that the operating lever can bring the snap mechanism to snap.
  • a generic overload relay is for example in the DE 299 17 173 U1 shown.
  • an adjustment device which acts either directly on the operating lever or on the snap-action mechanism and changes the distance of the operating end of the actuating lever to the operating point of the snap-action mechanism in the rest position of the actuating lever. This distance is also referred to as the switching distance. If the switching distance is greater, then the main bimetal must continue to deflect to overcome the switching distance and bring the trip lever in contact with the operating point of the snap-action mechanism and vice versa.
  • a temperature compensation device is provided.
  • the main bimetallic strip already bends and this reduces the operating distance. This is undesirable because the switching distance should remain as independent of the ambient temperature.
  • a compensation bimetal is provided. This bends when the ambient temperature changes and acts on the operating lever so that the effect of the main bimetallic strip is compensated.
  • the compensation bimetal would thus force the actuating end of the actuating lever away from the actuation point and thereby compensate for a reduction of the switching distance which occurs due to the action of the main thermostatic bimetal.
  • the compensation bimetal is stored separately in the housing. By means of a compensation bimetal adjusting device, the compensation bimetal is brought into the required position during device production in order to be able to achieve the desired compensation effect as a function of the set triggering current.
  • a first function is the thermal adjustment, ie the Einjust ist the switching distance so, that all tripping characteristics required according to the standard or regulation valid for the respective application are complied with.
  • a second function relates to the compensation, ie to ensure that the tripping characteristics are still met or maintained even at low or high ambient temperatures, for example in an ambient temperature range between -25 ° C and + 70 ° C.
  • a third function relates to the realization of a Stromeinstell Anlagenkeit in a particular stream interval, so that an adjustment can be made to the respective rated motor current.
  • Previously known solutions of thermal relays have to ensure these three functions a variety of components, usually between 7 and 12 individual parts.
  • the US 3,451,024 shows a three-phase electrothermal relay in which the slider mechanism acts on the compensation bimetal and this shifts, and wherein the compensation bimetal is connected to a coupling plate on which the actuating lever is pivotally mounted.
  • an electrical overcurrent relay which comprises a switchable between two stable switching positions derailleur, an actuating lever, which causes the movement of the derailleur in the event of an overcurrent, and a main and a Kompensationsbimetall, wherein the Kompensationsbimetall, connected to the Kompensationsbimetall coupling part and the pivotable on the dome part mounted operating lever forms an assembly that could possibly be used as prefabricated in the overcurrent relay, which is pivotable about an adjustable pivot point, wherein the position of the pivot point of the actuating lever is variable relative to the rear derailleur by bending or pivoting of the compensation bimetal.
  • the invention is therefore characterized in that the Kompensationsbimetall, connected to the Kompensationsbimetall coupling part and pivotally mounted on the dome part operating lever forms a prefabricated insertable into the overcurrent relay assembly which is pivotable about a fulcrum fixed to the housing, wherein by bending or pivoting of the Kompensationsbimetalls the position of the fulcrum of the operating lever relative to the snap-action mechanism is variable.
  • the compensation bimetal is integrated in the assembly in such a way that it simultaneously assumes lever functions. It is in an assembly of only three parts integrated so that this assembly after connection of the three parts together to a captive assembly over which can be implemented in a suitable manner, all three above-mentioned functions.
  • the invention thus provides a well-organized in a rational assembly, independent assembly for the realization of the three functions thermal adjustment, compensation and current adjustment.
  • the advantage of the invention is that it creates a combination of only three parts combined assembly, which can be prefabricated and used as a prefabricated unit during assembly in the device and combines several functions in itself.
  • the functions that are combined in the combination unit are the operation of the snap-action mechanism by the operating lever, the setting of the tripping current and the temperature compensation.
  • the actuating lever and the compensation bimetal are coupled to the dome part.
  • the compensation bimetal becomes part of the adjustment mechanism.
  • Both the current setting and the adjustment of the temperature compensation now takes place via the compensation bimetal. It is only necessary to precisely align the one combined assembly during production in its position in the housing in order to be able to achieve exact positioning of both the tripping current setting and the adjustment of the temperature compensation.
  • the dome part has a second arm with a stop for the compensation bimetal and the actuating lever on a holding extension, which presses the compensation bimetal to the stop.
  • an adjustment device for pivoting the compensation bimetal around the housing-fixed pivot point is present.
  • the coupling part has a first bearing arm, on which the pivot point of the actuating lever is mounted, and a second bearing arm, on which it is fixed to the housing and pivotally mounted.
  • the first and second bearing arms are aligned with one another in opposite directions.
  • the actuating lever is a double-arm, at the first end of which engage a slider coupled to the Hauptbimetall and thereby pivot the operating lever, and the second end during pivoting for snapping the shift lever cooperates with this.
  • the shift lever is pivotally mounted in a fixedly connected to the housing cutting bearing, and above the cutting bearing attacks an acted upon by the second end of the actuating lever tension spring with one end, wherein upon pivoting of the actuating lever by the second End of a snap-over of the tension spring loaded shift lever is effected.
  • the single figure shows schematically a partial insight into an overload relay 1 according to the invention.
  • the overload relay 1 has a housing 2. This includes all necessary for the function of an overload relay modules and components, in particular terminals for the main current path, terminals for the auxiliary or the auxiliary current paths, a main bimetal or three main bimetallic in the main current path, at least one contact point for opening or closing the auxiliary current path, a snap-action switch for switching the at least one contact point between two switching positions, an actuating lever, which is pivoted upon actuation by a certain triggering path, and thereby acts with its actuating end on an operating point of the snap-action mechanism, thereby causing the snap-action mechanism is snapped, a slide mechanism, the deflection of the Hauptthermobimetalls or the main thermobimetals transfers to the operating lever.
  • the function of the overcurrent relay is known in principle. Due to the current heat of the current in the main current path, the main bimetal bends. If the current exceeds a certain critical size, the deflection is strong enough to pivot over the coupling of the slide mechanism, the actuating lever so far that the operating lever can bring the snap mechanism to snap.
  • To set the triggering current usually acts an adjustment directly on the operating lever or on the snap-action mechanism, whereby the distance of the actuating end of the actuating lever is variable to the operating point of the snap-action mechanism in the rest position of the actuating lever. This distance is also referred to as the switching distance. If the switching distance is greater, then the main bimetal must continue to deflect to overcome the switching distance and bring the trip lever in contact with the operating point of the snap-action mechanism and vice versa.
  • a temperature compensation device is also provided.
  • the main bimetallic strip already bends and this reduces the operating distance. This is undesirable because the switching distance should remain as independent of the ambient temperature.
  • a compensation bimetal is provided. This bends when the ambient temperature changes and acts on the operating lever so that the effect of the main bimetallic strip is compensated. At a temperature increase so would the Kompensationsbimetall push away the actuating end of the actuating lever from the actuation point, thereby reducing the switching distance, due to the action of the Main bimetallic enters, compensate.
  • auxiliary contact points 3, 4 are arranged in the housing 2, two auxiliary contact points 3, 4 are arranged. These are double contact points, which each have two fixed contact pieces 31, 32 and 41, 42, which are bridged by movable contact pieces 36, 37 and, 46, 47, which are each attached to a contact bridge 33 and 43, respectively can, whereby the auxiliary current paths 35 and 45 can be opened or closed. In the illustrated switching position, the contact point 3 is opened and the contact point 4 is closed. Also not shown are other components such as contact springs, which are usually present in generic devices.
  • a knife-edge bearing 51 is fixedly connected to the housing 2.
  • a shift lever 52 is supported with its bearing extension 53. It is here a double arm, the first arm 54, the contact bridge 33 and the second arm 55, the contact bridge 43 carries. By tilting the shift lever 52 can be switched between opening and closing of the contact points 3 and 4 respectively.
  • an overload relay according to the invention can also be realized with single contact points or with other embodiments of rocker arms.
  • the actuation point can also be directly on the shift lever, depending on the structural design, all conceivable constructive embodiments of snap-action switching mechanisms should be included according to the invention.
  • the actuating lever 7 has the shape of a T-shaped double-arm lever, with a transverse arm, at one free end of the point 73 for the - not shown here - slide mechanism that connects to the - also not shown here - produces main bimetallic strip.
  • the action of the slide mechanism is indicated by the force arrow S.
  • the short longitudinal web 74 is pivotally mounted with its free end 75 between the two prong-like projections 82, 83 at the free end of the first bearing arm 81 of a dome part 8.
  • the free end 75 forms a kind of a bearing roller of a first hinge bearing 9 and is snapped between the two prong-like projections 82, 83 and held there like a hinge pivot.
  • the dome part 8 has a second bearing arm 84. This has a bearing lug 85, with the second bearing arm 84 is rotatably mounted in a second bearing 10 on a bearing pin fixed to the housing.
  • the bearing arms 81, 84 is at right angles from a first holding arm 86 from. This has at its free end a stop edge 87 on which the Kompensationsbimetall 11 rests. This is an elongated metal strip, the bearing point 111 at the stop edge 87 is located in its lower half. At its lower free end it carries a threaded bore 112 into which the screw thread of an adjusting screw 12 engages. The head 121 of the adjusting screw 12 is held rotatably in a holding opening 89 at the free end 88 of a second holding arm 87.
  • the holder of the adjusting screw 12 may be designed so that it is rotatably guided with a groove on its head 121 in a slot formed by two fork-shaped prongs at the free end 88 of the second support arm 87.
  • a rotation of the adjusting screw 12 thus changes the distance of the free end of the compensation bimetal 11 to the free end 88 of the second support arm 87 of the dome part eighth
  • a holding extension 76 is formed, which points downward in the direction of the stop edge 87. He carries at its free end a rounding 77. He is so long executed that he can press with his rounding 77, the compensation bimetal 11 against the stop edge 87.
  • the Kompensationsbimetall 11 is thus connected by the adjusting screw 12 and the clamping bearing on the stop edge fixed to the dome part 8 when the operating lever 7 is engaged on the first hinge bearing 9.
  • the actuating lever 7, the coupling part 8 and the compensation bimetal 11 form a unitary assembly 14, which can be prefabricated and used as a unitary assembly 14 in the housing 2 and pivotally connected to the housing 2 at the second bearing point 10.
  • an adjusting device 13 which acts on the second free end 113 of the compensation thermobimetal 11.
  • it is an eccentric screw, which can rotate the Kompensationsthermobimetall 11 relative to the housing 2 to the second bearing point 10 during rotation with its eccentric extension 131.
  • a restraining spring 15 acts on the assembly 14 with its free end counterclockwise, wherein the other end of the restraint spring is hinged to the housing.
  • the free end 113 of the compensation bimetal 11 is always pressed against the eccentric extension 131 of the eccentric screw 13.
  • the assembly 14 assumes a defined rest position, the rotational position can be varied by turning the eccentric screw 13.
  • the restraint spring can also be applied elsewhere on the assembly 14. It is only important that any kind of bondage of the assembly 14 is given, regardless of the specific implementation.
  • the position and design of the fetlock spring shown as a leg spring in the figure is only an exemplary example.
  • the bearing 9 pivots clockwise, it changes the position of the pivot point of the actuating lever 7 relative to the cutting edge bearing 51 so that the distance between the actuating end 71 and the actuating point 72 is smaller, and it may even be the tension spring already a bit in the direction pressed to the dead center.
  • the switching distance can be varied by turning the eccentric screw 13. If the overload relay should switch only at a high overcurrent, so if the main bimetallic has bent far, so this requires a large switching distance, the eccentric screw 13 is to be adjusted clockwise. On the other hand, if switching is to take place even at a low overcurrent, when the main bimetal has bent only a small part, the eccentric screw 13 is to be adjusted counterclockwise.
  • the current sensitivity of the overload relay can therefore be set via the eccentric screw.
  • the function of the compensation bimetal and thus the temperature compensation is the following. If, for example, the ambient temperature or the housing interior temperature increases, the compensation bimetal 11 bends clockwise, in the direction of arrow U.
  • the compensation bimetal is connected via the adjusting screw 12 fixed to the assembly 14 and held by the holding extension 76 at the stop edge 87. Only that part of the compensation bimetal can bend between the abutment edge 87 and the free end 113 bearing against the eccentric screw 13. This creates a distance between the free end 113 of the compensation bimetal 11 and the eccentric screw. Due to the bondage with the restraint spring 15, the assembly 14 is always pressed against the eccentric extension 131 of the eccentric screw 13, and thus pivoted counterclockwise around the second bearing point 10. As a result, the position of the fulcrum 9 of the shift lever 7 relative to the cutting bearing 51 changes so that a reduction of the switching distance, as is sought by the action of the main bimetallic strip in the direction of arrow S, is counteracted.
  • the adjusting screw 12 causes the Kompensationsbimetalls 11 to pivot about the stop edge 87, wherein the assembly 14 is also pivoted about the second bearing 10 and thus the switching distance is set.
  • the purpose of this adjustment is to ensure the triggering of this current at a set via the eccentric tripping current, regardless of manufacturing tolerances or material deviations in the Kompensationsbimetallen.
  • the adjustment is done individually for each device, with each device is individually set the correct switching distance based on a set with the eccentric screw 13 rated current through the adjusting screw 12.
  • the assembly 14 which comprises the actuating lever 7, the dome part 8 and the compensation bimetal 11 connected together in a single, prefabricatable assembly, thus allows the three functions adjustment, tripping current adjustment and temperature compensation to be carried out with only a single assembly. This is achieved in that a twisting or bending of the compensation bimetal due to the fixed coupling with the dome part 8 has a pivoting of the fulcrum 9 of the actuating lever relative to the cutting bearing 51 of the snap-action mechanism result. In device manufacturing, only the assembly 14 in the housing must be precisely aligned, then the exact positioning of the adjustment for temperature compensation and release position is done automatically.

Landscapes

  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)

Description

Die Erfindung betrifft ein elektrisches Überstromrelais, welches ein zwischen zwei stabilen Schaltstellungen umschnappbares Schnappschaltwerk, einen Betätigungshebel, welcher im Überstromfall das Umschnappen des Schnappschaltwerks bewirkt, sowie ein Haupt- und ein Kompensationsbimetall umfasst, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an electrical overcurrent relay, which comprises a snap-action switching mechanism which can be snapped over between two stable switching positions, an actuating lever which causes the snap-action mechanism to snap over in the event of an overcurrent, and a main and a compensation bimetal, according to the preamble of claim 1.

Bei gattungsgemäßen Überstromrelais sind alle für die Funktion notwendigen Baugruppen und Komponenten in einem Gehäuse umfasst, insbesondere Anschlussklemmen für den Hauptstrompfad, Anschlussklemmen für den oder die Hilfsstrompfade, ein Hauptthermobimetall im Hauptstrompfad, wenigstens eine Kontaktstelle zum Öffnen oder Schließen des Hilfsstrompfades, ein Schnappschaltwerk zum Umschalten der wenigstens einen Kontaktstelle zwischen zwei Schaltstellungen, ein Betätigungshebel, welcher bei entsprechender Betätigung um einen bestimmten Auslöseweg verschwenkt wird, und dadurch mit seinem Betätigungsende auf einen Betätigungspunkt des Schnappschaltwerks einwirkt, so dass dadurch das Schnappschaltwerk zum Umschnappen gebracht wird, sowie eine Schiebermechanik, die eine Ausbiegung des Hauptthermobimetalls auf den Betätigungshebel überträgt.In generic overcurrent relay all necessary for the function modules and components are included in a housing, in particular terminals for the main current path, terminals for the or the auxiliary current paths, a main bimetallic in the main current path, at least one contact point for opening or closing the auxiliary current path, a snap-action switch for switching the at least one contact point between two switching positions, an actuating lever which is pivoted at a corresponding actuation by a certain trip path, and thereby acts with its operating end on an operating point of the snap-action mechanism, thereby causing the snap-action mechanism to be snapped, and a slide mechanism, the deflection of the main bimetallic strip transfers to the operating lever.

Die Funktion eines gattungsgemäßen Überstromrelais ist die folgende. Aufgrund der Stromwärme des Stroms im Hauptstrompfad biegt sich das Hauptthermobimetall aus. Wenn der Strom eine bestimmte kritische Größe überschreitet, ist die Ausbiegung stark genug, um über die Kopplung der Schiebermechanik den Betätigungshebel so weit zu verschwenken, dass der Betätigungshebel das Schnappschaltwerk zum Umschnappen bringen kann.The function of a generic overcurrent relay is the following. Due to the current heat of the current in the main current path, the main bimetal bends. If the current exceeds a certain critical size, the deflection is strong enough to over the coupling of the slide mechanism, the operating lever so far to pivot that the operating lever can bring the snap mechanism to snap.

Ein gattungsgemäßes Überlastrelais ist beispielsweise in der DE 299 17 173 U1 gezeigt.A generic overload relay is for example in the DE 299 17 173 U1 shown.

Um das Gerät auf unterschiedliche Nennstromstärken einstellen zu können, ist bei gattungsgemäßen Geräten eine Einstellvorrichtung vorhanden, die entweder direkt auf den Betätigungshebel oder auf das Schnappschaltwerk wirkt und den Abstand des Betätigungsendes des Betätigungshebels zum Betätigungspunkt des Schnappschaltwerks in der Ruheposition des Betätigungshebels verändert. Dieser Abstand wird auch als Schaltabstand bezeichnet. Wenn der Schaltabstand größer ist, dann muss sich das Hauptthermobimetall weiter ausbiegen, um den Schaltabstand zu überwinden und den Auslösehebel in Kontakt mit dem Betätigungspunkt des Schnappschaltwerkes zu bringen und umgekehrt.In order to adjust the device to different nominal currents, generic devices, an adjustment device is present, which acts either directly on the operating lever or on the snap-action mechanism and changes the distance of the operating end of the actuating lever to the operating point of the snap-action mechanism in the rest position of the actuating lever. This distance is also referred to as the switching distance. If the switching distance is greater, then the main bimetal must continue to deflect to overcome the switching distance and bring the trip lever in contact with the operating point of the snap-action mechanism and vice versa.

Bei gattungsgemäßen Überstromrelais ist außerdem eine Temperaturkompensationseinrichtung vorgesehen. Bei Erwärmung des Gerätes, beispielsweise aufgrund einer Erhöhung der Umgebungstemperatur, biegt sich das Haupt-Thermobimetall nämlich bereits aus und dadurch verringert sich der Schaltabstand. Das ist unerwünscht, da der Schaltabstand möglichst unabhängig von der Umgebungstemperatur bleiben soll. Zum Ausgleich ist üblicherweise ein Kompensationsbimetall vorgesehen. Dieses biegt sich bei Änderung der Umgebungstemperatur aus und wirkt dabei auf den Betätigungshebel so ein, dass der Effekt des Hauptthermobimetalls kompensiert wird. Bei einer Temperaturerhöhung würde also das Kompensationsbimetall das Betätigungsende des Betätigungshebels von dem Betätigungspunkt wegdrücken und dadurch eine Verringerung des Schaltabstandes, die aufgrund der Einwirkung des Hauptthermobimetalls eintritt, kompensieren. Das Kompensationsbimetall ist separat im Gehäuse gelagert. Durch eine Kompensationsbimetall-Justiereinrichtung wird das Kompensationsbimetall bei der Gerätefertigung dabei in die erforderliche Position gebracht, um abhängig vom eingestellten Auslösestrom den gewünschten Kompensationseffekt erzielen zu können.In generic overcurrent relay also a temperature compensation device is provided. When the device heats up, for example as a result of an increase in the ambient temperature, the main bimetallic strip already bends and this reduces the operating distance. This is undesirable because the switching distance should remain as independent of the ambient temperature. To compensate usually a compensation bimetal is provided. This bends when the ambient temperature changes and acts on the operating lever so that the effect of the main bimetallic strip is compensated. In the event of a temperature increase, the compensation bimetal would thus force the actuating end of the actuating lever away from the actuation point and thereby compensate for a reduction of the switching distance which occurs due to the action of the main thermostatic bimetal. The compensation bimetal is stored separately in the housing. By means of a compensation bimetal adjusting device, the compensation bimetal is brought into the required position during device production in order to be able to achieve the desired compensation effect as a function of the set triggering current.

In thermischen Überlastrelais sind also drei Funktionen zu realisieren. Eine erste Funktion ist die thermische Justage, d.h. die Einjustierung des Schaltabstandes so, dass alle nach der für die jeweilige Anwendung gültige Norm oder Vorschrift geforderte Auslösekennlinien eingehalten werden. Eine zweite Funktion betrifft die Kompensation, d.h., die Sicherstellung, dass die Auslösekennlinien auch bei tiefen oder hohen Umgebungstemperaturen noch erfüllt bzw. eingehalten werden, beispielsweise etwa in einem Umgebungstemperaturbereich zwischen -25°C und +70°C. Eine dritte Funktion betrifft die Realisierung einer Stromeinstellmöglichkeit in einem bestimmten Stromintervall, so, dass eine Anpassung auf den jeweiligen Motornennstrom erfolgen kann. Bisher bekannte Lösungen von thermischen Relais besitzen für die Sicherstellung dieser drei Funktionen eine Vielzahl von Bauteilen, in der Regel zwischen 7 und 12 einzelnen Teilen.In thermal overload relays, three functions must therefore be implemented. A first function is the thermal adjustment, ie the Einjustierung the switching distance so, that all tripping characteristics required according to the standard or regulation valid for the respective application are complied with. A second function relates to the compensation, ie to ensure that the tripping characteristics are still met or maintained even at low or high ambient temperatures, for example in an ambient temperature range between -25 ° C and + 70 ° C. A third function relates to the realization of a Stromeinstellmöglichkeit in a particular stream interval, so that an adjustment can be made to the respective rated motor current. Previously known solutions of thermal relays have to ensure these three functions a variety of components, usually between 7 and 12 individual parts.

Die US 3 451 024 zeigt ein dreiphasiges elektrothermisches Relais, bei dem die Schiebermechanik auf das Kompensationsbimetall wirkt und dieses verschiebt, und bei dem das Kompensationsbimetall mit einer Koppelplatte verbunden ist, an der der Betätigungshebel schwenkbar gelagert ist. Die Kopplung des Hauptbimetalls erfolgt über die Schiebermechanik mit dem Kompensationsbimetall. Der Schaltabstand wird eingestellt durch Verschieben des Drehpunkts der Koppelplatte im Gehäuse.The US 3,451,024 shows a three-phase electrothermal relay in which the slider mechanism acts on the compensation bimetal and this shifts, and wherein the compensation bimetal is connected to a coupling plate on which the actuating lever is pivotally mounted. The coupling of the Hauptbimetalls via the slider mechanism with the compensation bimetal. The switching distance is adjusted by moving the pivot point of the coupling plate in the housing.

Damit offenbart US 3 451 024 A ein elektrisches Überstromrelais, welches ein zwischen zwei stabilen Schaltstellungen bewegbaren Schaltwerk, einen Betätigungshebel, welcher im Überstromfall das Bewegen des Schaltwerks bewirkt, sowie ein Haupt- und ein Kompensationsbimetall umfasst, wobei das Kompensationsbimetall, ein mit dem Kompensationsbimetall verbundenes Kuppelteil und der an dem Kuppelteil verschwenkbar gelagerte Betätigungshebel eine Baugruppe bildet, die evtl. als vorgefertigt in das Überstromrelais einsetzbar sein könnte, welche um einen justierbaren Drehpunkt verschwenkbar ist, wobei durch ein Verbiegen oder Verschwenken des Kompensationsbimetalls die Lage des Drehpunktes des Betätigungshebels relativ zu dem Schaltwerk veränderlich ist.With it revealed US 3 451 024 A an electrical overcurrent relay, which comprises a switchable between two stable switching positions derailleur, an actuating lever, which causes the movement of the derailleur in the event of an overcurrent, and a main and a Kompensationsbimetall, wherein the Kompensationsbimetall, connected to the Kompensationsbimetall coupling part and the pivotable on the dome part mounted operating lever forms an assembly that could possibly be used as prefabricated in the overcurrent relay, which is pivotable about an adjustable pivot point, wherein the position of the pivot point of the actuating lever is variable relative to the rear derailleur by bending or pivoting of the compensation bimetal.

Bei bekannten gattungsgemäßen Geräten ist somit insgesamt die mechanische Anordnung der Komponenten kompliziert, bei der Fertigung muss ein hoher Aufwand betrieben werden, um die gegenseitige Lage von Betätigungshebel, Einstelleinrichtung, Kompensationsbimetall und Justiervorrichtung und deren Abstimmung auf das Schnappschaltwerk so genau vorzunehmen, dass eine reproduzierbare und zuverlässige Funktion gewährleistet ist.In known generic devices thus overall the mechanical arrangement of the components is complicated, in the production of high effort must be operated to make the mutual position of operating lever, adjuster, compensation bimetal and adjusting device and their vote on the snap-action mechanism so accurate that a reproducible and reliable function is ensured.

Es ist die Aufgabe der vorliegenden Erfindung, ein gattungsgemäßes Überstromrelais mit vereinfachtem mechanischen Aufbau zu schaffen, welches einfacher zu fertigen ist.It is the object of the present invention to provide a generic overcurrent relay with a simplified mechanical structure, which is easier to manufacture.

Diese Aufgabe wird erfindungsgemäß gelöst durch die Merkmale des Anspruches 1.This object is achieved by the features of claim 1.

Die Erfindung ist daher dadurch gekennzeichnet, dass das Kompensationsbimetall, ein mit dem Kompensationsbimetall verbundenes Kuppelteil und der an dem Kuppelteil verschwenkbar gelagerte Betätigungshebel eine vorgefertigt in das Überstromrelais einsetzbare Baugruppe bildet, welche um einen gehäusefesten Drehpunkt verschwenkbar ist, wobei durch ein Verbiegen oder Verschwenken des Kompensationsbimetalls die Lage des Drehpunktes des Betätigungshebels relativ zu dem Schnappschaltwerk veränderlich ist.The invention is therefore characterized in that the Kompensationsbimetall, connected to the Kompensationsbimetall coupling part and pivotally mounted on the dome part operating lever forms a prefabricated insertable into the overcurrent relay assembly which is pivotable about a fulcrum fixed to the housing, wherein by bending or pivoting of the Kompensationsbimetalls the position of the fulcrum of the operating lever relative to the snap-action mechanism is variable.

Erfindungsgemäß ist das Kompensationsbimetall so in die Baugruppe integriert, dass es gleichzeitig Hebelfunktionen übernimmt. Es ist in eine Baugruppe aus nur drei Tei-len so integriert, dass diese Baugruppe nach Verbindung der drei Teile miteinander zu einer unverlierbaren Baugruppe wird, über die in geeigneter Weise alle drei oben genannten Funktionen realisiert werden können. Die Erfindung schafft somit eine in einer rationellen Montage gut zu handhabende, eigenständige Baugruppe zur Realisierung der drei Funktionen thermische Justage, Kompensation und Stromeinstellung.According to the invention, the compensation bimetal is integrated in the assembly in such a way that it simultaneously assumes lever functions. It is in an assembly of only three parts integrated so that this assembly after connection of the three parts together to a captive assembly over which can be implemented in a suitable manner, all three above-mentioned functions. The invention thus provides a well-organized in a rational assembly, independent assembly for the realization of the three functions thermal adjustment, compensation and current adjustment.

Der Vorteil der Erfindung liegt darin, dass dadurch eine aus nur drei Teilen bestehende Kombibaugruppe geschaffen ist, die vorgefertigt und als eine vorgefertigte Einheit bei der Montage in das Gerät eingesetzt werden kann und die in sich mehrere Funktionen vereinigt. Die Funktionen, die in der Kombibaugruppe vereinigt sind, sind die Betätigung des Schnappschaltwerks durch den Betätigungshebel, die Einstellung des Auslösestroms und die Temperaturkompensation. Der Betätigungshebel und das Kompensationsbimetall sind an das Kuppelteil gekoppelt. Dadurch wird das Kompensationsbimetall Teil der Verstellmechanik. Sowohl die Stromeinstellung als auch die Justierung der Temperaturkompensation erfolgt nun über das Kompensationsbimetall. Es muss nur noch die eine Kombibaugruppe bei der Fertigung in ihrer Lage im Gehäuse genau ausgerichtet werden, um eine exakte Positionierung sowohl der Auslösestromeinstellung als auch der Justierung der Temperaturkompensation erreichen zu können.The advantage of the invention is that it creates a combination of only three parts combined assembly, which can be prefabricated and used as a prefabricated unit during assembly in the device and combines several functions in itself. The functions that are combined in the combination unit are the operation of the snap-action mechanism by the operating lever, the setting of the tripping current and the temperature compensation. The actuating lever and the compensation bimetal are coupled to the dome part. As a result, the compensation bimetal becomes part of the adjustment mechanism. Both the current setting and the adjustment of the temperature compensation now takes place via the compensation bimetal. It is only necessary to precisely align the one combined assembly during production in its position in the housing in order to be able to achieve exact positioning of both the tripping current setting and the adjustment of the temperature compensation.

Gemäß einer vorteilhaften Ausführungsform weist das Kuppelteil einen zweiten Arm mit einem Anschlag für das Kompensationsbimetall und der Betätigungshebel einen Haltefortsatz auf, der das Kompensationsbimetall an den Anschlag drückt.According to an advantageous embodiment, the dome part has a second arm with a stop for the compensation bimetal and the actuating lever on a holding extension, which presses the compensation bimetal to the stop.

Gemäß einer weiteren vorteilhaften Ausführungsform eines erfindungsgemäßen elektrischen Überstromrelais ist eine Einstelleinrichtung zum Verschwenken des Kompensationsbimetalls um den gehäusefesten Drehpunkt vorhanden.According to a further advantageous embodiment of an electrical overcurrent relay according to the invention, an adjustment device for pivoting the compensation bimetal around the housing-fixed pivot point is present.

Gemäß einer weiteren vorteilhaften Ausführungsform eines erfindungsgemäßen elektrischen Überstromrelais weist das Kuppelteil einen ersten Lagerarm, an dem der Drehpunkt des Betätigungshebels gelagert ist, sowie einen zweiten Lagerarm auf, an dem es gehäusefest und schwenkbar gelagert ist..According to a further advantageous embodiment of an electrical overcurrent relay according to the invention, the coupling part has a first bearing arm, on which the pivot point of the actuating lever is mounted, and a second bearing arm, on which it is fixed to the housing and pivotally mounted.

Gemäß einer weiteren vorteilhaften Ausführungsform eines erfindungsgemäßen elektrischen Überstromrelais fluchten der erste und zweite Lagerarm in entgegengesetzte Richtungen miteinander.According to a further advantageous embodiment of an electrical overcurrent relay according to the invention, the first and second bearing arms are aligned with one another in opposite directions.

Gemäß einer weiteren vorteilhaften Ausführungsform eines erfindungsgemäßen elektrischen Überstromrelais ist der Betätigungshebel ein Doppelarmhebel, an dessen erstem Ende ein mit dem Hauptbimetall gekoppelter Schieber angreifen und dadurch den Betätigungshebel verschwenken kann, und dessen zweites Ende beim Verschwenken zum Umschnappen des Schalthebels mit diesem zusammenwirkt.According to a further advantageous embodiment of an electrical overcurrent relay according to the invention, the actuating lever is a double-arm, at the first end of which engage a slider coupled to the Hauptbimetall and thereby pivot the operating lever, and the second end during pivoting for snapping the shift lever cooperates with this.

Gemäß einer weiteren vorteilhaften Ausführungsform eines erfindungsgemäßen elektrischen Überstromrelais ist der Schalthebel schwenkbar in einem mit dem Gehäuse fest verbundenen Schneidlager gelagert, und oberhalb des Schneidlagers greift eine durch das zweite Ende des Betätigungshebels beaufschlagbare Zugfeder mit einem Ende an, wobei beim Verschwenken des Betätigungshebels durch dessen zweites Ende ein Umschnappen des zugfederbeaufschlagten Schalthebels bewirkt wird.According to a further advantageous embodiment of an electrical overcurrent relay according to the invention, the shift lever is pivotally mounted in a fixedly connected to the housing cutting bearing, and above the cutting bearing attacks an acted upon by the second end of the actuating lever tension spring with one end, wherein upon pivoting of the actuating lever by the second End of a snap-over of the tension spring loaded shift lever is effected.

Weitere vorteilhafte Ausgestaltungen und Verbesserungen der Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous embodiments and improvements of the invention can be found in the dependent claims.

Anhand der Zeichnung, in der ein Ausführungsbeispiel der Erfindung dargestellt ist, sollen die Erfindung sowie weitere vorteilhafte Ausgestaltungen und Verbesserungen und weitere Vorteile der Erfindung näher erläutert und beschrieben werden.Reference to the drawing, in which an embodiment of the invention is shown, the invention and further advantageous embodiments and improvements and further advantages of the invention will be explained and described in detail.

Es zeigt die einzige Figur schematisch eine Teil-Einsicht in ein erfindungsgemäßes Überlastrelais 1.The single figure shows schematically a partial insight into an overload relay 1 according to the invention.

Das Überlastrelais 1 hat ein Gehäuse 2. Dieses umfasst alle für die Funktion eines Überlastrelais notwendigen Baugruppen und Komponenten, insbesondere Anschlussklemmen für den Hauptstrompfad, Anschlussklemmen für den oder die Hilfsstrompfade, ein Hauptthermobimetall bzw. drei Hauptthermobimetalle im Hauptstrompfad, wenigstens eine Kontaktstelle zum Öffnen oder Schließen des Hilfsstrompfades, ein Schnappschaltwerk zum Umschalten der wenigstens einen Kontaktstelle zwischen zwei Schaltstellungen, einen Betätigungshebel, welcher bei entsprechender Betätigung um einen bestimmten Auslöseweg verschwenkt wird, und dadurch mit seinem Betätigungsende auf einen Betätigungspunkt des Schnappschaltwerks einwirkt, so dass dadurch das Schnappschaltwerk zum Umschnappen gebracht wird, eine Schiebermechanik, die eine Ausbiegung des Hauptthermobimetalls bzw. der Hauptthermobimetalle auf den Betätigungshebel überträgt.The overload relay 1 has a housing 2. This includes all necessary for the function of an overload relay modules and components, in particular terminals for the main current path, terminals for the auxiliary or the auxiliary current paths, a main bimetal or three main bimetallic in the main current path, at least one contact point for opening or closing the auxiliary current path, a snap-action switch for switching the at least one contact point between two switching positions, an actuating lever, which is pivoted upon actuation by a certain triggering path, and thereby acts with its actuating end on an operating point of the snap-action mechanism, thereby causing the snap-action mechanism is snapped, a slide mechanism, the deflection of the Hauptthermobimetalls or the main thermobimetals transfers to the operating lever.

Die Funktion des Überstromrelais ist im Prinzip bekannt. Aufgrund der Stromwärme des Stroms im Hauptstrompfad biegt sich das Hauptthermobimetall aus. Wenn der Strom eine bestimmte kritische Größe überschreitet, ist die Ausbiegung stark genug, um über die Kopplung der Schiebermechanik den Betätigungshebel so weit zu verschwenken, dass der Betätigungshebel das Schnappschaltwerk zum Umschnappen bringen kann.The function of the overcurrent relay is known in principle. Due to the current heat of the current in the main current path, the main bimetal bends. If the current exceeds a certain critical size, the deflection is strong enough to pivot over the coupling of the slide mechanism, the actuating lever so far that the operating lever can bring the snap mechanism to snap.

Zur Einstellung der Auslösestromstärke wirkt üblicherweise eine Einstellvorrichtung direkt auf den Betätigungshebel oder auf das Schnappschaltwerk, wodurch der Abstand des Betätigungsendes des Betätigungshebels zum Betätigungspunkt des Schnappschaltwerks in der Ruheposition des Betätigungshebels veränderbar ist. Dieser Abstand wird auch als Schaltabstand bezeichnet. Wenn der Schaltabstand größer ist, dann muss sich das Hauptthermobimetall weiter ausbiegen, um den Schaltabstand zu überwinden und den Auslösehebel in Kontakt mit dem Betätigungspunkt des Schnappschaltwerkes zu bringen und umgekehrt.To set the triggering current usually acts an adjustment directly on the operating lever or on the snap-action mechanism, whereby the distance of the actuating end of the actuating lever is variable to the operating point of the snap-action mechanism in the rest position of the actuating lever. This distance is also referred to as the switching distance. If the switching distance is greater, then the main bimetal must continue to deflect to overcome the switching distance and bring the trip lever in contact with the operating point of the snap-action mechanism and vice versa.

Bei bekannten Überstromrelais ist außerdem eine Temperaturkompensationseinrichtung vorgesehen. Bei Erwärmung des Gerätes, beispielsweise aufgrund einer Erhöhung der Umgebungstemperatur, biegt sich das Haupt-Thermobimetall nämlich bereits aus und dadurch verringert sich der Schaltabstand. Das ist unerwünscht, da der Schaltabstand möglichst unabhängig von der Umgebungstemperatur bleiben soll. Zum Ausgleich ist üblicherweise ein Kompensationsbimetall vorgesehen. Dieses biegt sich bei Änderung der Umgebungstemperatur aus und wirkt dabei auf den Betätigungshebel so ein, dass der Effekt des Hauptthermobimetalls kompensiert wird. Bei einer Temperaturerhöhung würde also das Kompensationsbimetall das Betätigungsende des Betätigungshebels von dem Betätigungspunkt wegdrücken und dadurch eine Verringerung des Schaltabstandes, die aufgrund der Einwirkung des Hauptthermobimetalls eintritt, kompensieren. Durch eine Justiereinrichtung wird der Schaltabstand bei der Gerätefertigung dabei in die erforderliche Position gebracht, um abhängig vom eingestellten Auslösestrom die Auslösekennlinien einzuhalten. die von der für die jeweilige Anwendung geltenden Norm gefordert sind. Außerdem besitzen thermische Relais eine Stromeinstellschraube, über die in einem angegebenen Strom intervall der Ansprechstrom des Relais auf den jeweiligen Motornennstrom des zu schützenden Motors eingestellt werden kann. Durch die Einstellung der Stromeinstellschraube wird ebenfalls der Schaltabstand verändert. Als Strömeinstellschraube dient in der Vorrichtung gemäß der vorliegenden Erfindung die Excenterschraube 13, wie weiter unten noch erläutert werden wird.In known overcurrent relays a temperature compensation device is also provided. When the device heats up, for example as a result of an increase in the ambient temperature, the main bimetallic strip already bends and this reduces the operating distance. This is undesirable because the switching distance should remain as independent of the ambient temperature. To compensate usually a compensation bimetal is provided. This bends when the ambient temperature changes and acts on the operating lever so that the effect of the main bimetallic strip is compensated. At a temperature increase so would the Kompensationsbimetall push away the actuating end of the actuating lever from the actuation point, thereby reducing the switching distance, due to the action of the Main bimetallic enters, compensate. By an adjusting the switching distance is brought in the device manufacturing while in the required position to comply with the tripping characteristics depending on the set tripping current. which are required by the standard applicable to the respective application. In addition, thermal relays have a Stromeinstellschraube over the interval in a specified current of the operating current of the relay can be set to the respective rated motor current of the motor to be protected. By adjusting the Stromeinstellschraube also the switching distance is changed. As a flow adjusting screw is used in the device according to the present invention, the eccentric screw 13, as will be explained below.

In der Darstellung der Figur sind die Anschlussklemmen, das Hauptthermobimetall und die Schiebermechanik der Übersichtlichkeit halber nicht dargestellt.In the illustration of the figure, the terminals, the main bimetallic and the slide mechanism for clarity are not shown.

In dem Gehäuse 2 sind zwei Hilfskontaktstellen 3, 4 angeordnet. Es handelt sich hier um Doppelkontaktstellen, welche jeweils zwei feste Kontaktstücke 31, 32 bzw. 41, 42 aufweisen, die durch bewegliche Kontaktstücke 36, 37 bzw., 46, 47, die an je einer Kontaktbrücke 33 bzw. 43 angebracht sind, überbrückt werden können, wodurch die Hilfsstrompfade 35 bzw. 45 geöffnet oder geschlossen werden können. In der dargestellten Schaltstellung ist die Kontaktstelle 3 geöffnet und die Kontaktstelle 4 geschlossen. Ebenfalls nicht dargestellt sind weitere Bauelemente wie beispielsweise Kontaktdruckfedern, die in gattungsgemäßen Geräten üblicherweise vorhanden sind.In the housing 2, two auxiliary contact points 3, 4 are arranged. These are double contact points, which each have two fixed contact pieces 31, 32 and 41, 42, which are bridged by movable contact pieces 36, 37 and, 46, 47, which are each attached to a contact bridge 33 and 43, respectively can, whereby the auxiliary current paths 35 and 45 can be opened or closed. In the illustrated switching position, the contact point 3 is opened and the contact point 4 is closed. Also not shown are other components such as contact springs, which are usually present in generic devices.

Das Umschalten der beiden Kontaktstellen erfolgt mit Hilfe eines Schnappschaltwerks 5. Dazu ist mit dem Gehäuse 2 ein Schneidenlager 51 fest verbunden. Auf dem Schneidenlager 51 stützt sich ein Schalthebel 52 mit seinem Lagerfortsatz 53 ab. Es ist hier ein Doppelarmhebel, dessen erster Arm 54 die Kontaktbrücke 33 und dessen zweiter Arm 55 die Kontaktbrücke 43 trägt. Durch Kippen des Schalthebels 52 kann zwischen Öffnen und Schließen der Kontaktstellen 3 bzw. 4 umgeschaltet werden.The switching of the two contact points takes place with the aid of a snap-action switching mechanism 5. For this purpose, a knife-edge bearing 51 is fixedly connected to the housing 2. On the cutting edge bearing 51, a shift lever 52 is supported with its bearing extension 53. It is here a double arm, the first arm 54, the contact bridge 33 and the second arm 55, the contact bridge 43 carries. By tilting the shift lever 52 can be switched between opening and closing of the contact points 3 and 4 respectively.

Oberhalb des Schneidenlagers 51 greift an einem Vorsprung 54 des Lagerfortsatzes 53 eine als Schnappelement wirkende Zugfeder 6 an, die unterhalb des Schneidenlagers 51 mit ihrem anderen Ende gehäusefest verankert ist. Der schneidengelagerte Schalthebel 52 wird von der Zugfeder 6 derart beaufschlagt, dass er eine der beiden stabilen Kipplagen einnimmt, bei denen entweder die erste oder die zweite Kontaktstelle 3, 4 geschlossen ist. Das Umschnappen des zugfederbeaufschlagten Schalthebels 52 von der in der Figur dargestellten ersten stabilen Kipplage in die zweite stabile Kipplage, in der dann die Kontaktstelle 4 geöffnet und die Kontaktstelle 3 geschlossen ist, wird durch das Betätigungsende 71 des Betätigungshebels 7 bewirkt. Dieses trifft an einem Betätigungspunkt 72 auf die Zugfeder 6 und drückt sie im Uhrzeigersinn nach unten, bis der Totpunkt erreicht und überwunden ist und die Zugfeder dann im weiteren Verlauf den Schalthebel in die zweite stabile Kippstellung zieht. Das Zurückstellen des Schalthebels in die erste stabile Kippstellung erfolgt mit anderen, hier nicht dargestellten Rücksetzmitteln.Above the cutting bearing 51 engages a projection 54 of the bearing extension 53 acting as a snap element tension spring 6, which is anchored to the housing fixed below the cutting bearing 51 with its other end. The cutting stocked Shift lever 52 is acted upon by the tension spring 6 such that it occupies one of the two stable tilt positions, in which either the first or the second contact point 3, 4 is closed. The snapping over of the tension spring-loaded switching lever 52 from the first stable tilting position shown in the figure to the second stable tilting position in which the contact point 4 is then opened and the contact point 3 is closed is effected by the actuating end 71 of the actuating lever 7. This meets at an operating point 72 on the tension spring 6 and pushes them clockwise down until the dead center is reached and overcome and then pulls the tension spring in the course of the shift lever in the second stable tilted position. The reset of the shift lever in the first stable tilting position takes place with other, not shown here reset means.

Die gezeigte Ausführungsform eines Schnappschaltwerks ist selbstverständlich nicht die einzig denkbare, die für die Realisierung der vorliegenden Erfindung in Frage kommt. Insbesondere lässt sich ein erfindungsgemäßes Überlastrelais auch mit Einfachkontaktstellen oder mit anderen Ausgestaltungen von Kipphebeln realisieren. Der Betätigungspunkt kann auch direkt am Schalthebel sein, je nach konstruktiver Ausgestaltung, alle denkbaren konstruktiven Ausgestaltungen von Schnappschaltwerken sollen erfindungsgemäß mit umfasst sein.The illustrated embodiment of a snap-action mechanism is of course not the only conceivable, which comes into question for the realization of the present invention. In particular, an overload relay according to the invention can also be realized with single contact points or with other embodiments of rocker arms. The actuation point can also be directly on the shift lever, depending on the structural design, all conceivable constructive embodiments of snap-action switching mechanisms should be included according to the invention.

Der Betätigungshebel 7 hat die Form eines T-förmigen Doppelarmhebels, mit einem Querarm, an dessen einem freien Ende der Angriffspunkt 73 für die - hier nicht dargestellte - Schiebermechanik ist, die die Verbindung mit dem - hier ebenfalls nicht dargestellten - Hauptthermobimetall herstellt. Die Wirkung der Schiebermechanik ist durch den Kraftpfeil S angedeutet.The actuating lever 7 has the shape of a T-shaped double-arm lever, with a transverse arm, at one free end of the point 73 for the - not shown here - slide mechanism that connects to the - also not shown here - produces main bimetallic strip. The action of the slide mechanism is indicated by the force arrow S.

An dem zweiten freien Ende des Querarms befindet sich das bereits erwähnte Betätigungsende 71.At the second free end of the transverse arm is the already mentioned operating end 71st

Der kurze Längssteg 74 ist mit seinem freien Ende 75 schwenkbar zwischen den beiden zinkenartigen Vorsprüngen 82, 83 am freien Ende des ersten Lagerarms 81 eines Kuppelteils 8 gelagert. Das freie Ende 75 bildet gewissermaßen eine Lagerwalze eines ersten Schamierlagers 9 und ist zwischen den beiden zinkenartigen Vorsprüngen 82, 83 eingeschnappt und dort wie ein Scharnier schwenkbar gehalten. In Verlängerung des ersten Lagerarms 81, auf dessen anderer Seite, besitzt das Kuppelteil 8 einen zweiten Lagerarm 84. Dieser hat eine Lageröse 85, mit dem der zweite Lagerarm 84 in einem zweiten Lager 10 drehbar an einem gehäusefesten Lagerzapfen gelagert ist. Durch Verschwenken des Kuppelteils 8 um die zweite Lagerstelle 10 verschwenkt damit auch die erste Schamierlagerstelle 9 des Betätigungshebels 7.The short longitudinal web 74 is pivotally mounted with its free end 75 between the two prong-like projections 82, 83 at the free end of the first bearing arm 81 of a dome part 8. The free end 75 forms a kind of a bearing roller of a first hinge bearing 9 and is snapped between the two prong-like projections 82, 83 and held there like a hinge pivot. In extension of the first bearing arm 81, on the other side, the dome part 8 has a second bearing arm 84. This has a bearing lug 85, with the second bearing arm 84 is rotatably mounted in a second bearing 10 on a bearing pin fixed to the housing. By pivoting the dome part 8 about the second bearing 10 so that also pivots the first hinge bearing 9 of the operating lever. 7

Von den beiden Lagerarmen 81, 84 steht in rechtem Winkel ein erster Haltearm 86 ab. Dieser hat an seinem freien Ende eine Anschlagskante 87, auf der das Kompensationsbimetall 11 aufliegt. Dieses ist ein längserstreckter Blechstreifen, die Auflagestelle 111 an der Anschlagskante 87 befindet sich in seiner unteren Hälfte. An seinem unteren freien Ende trägt er eine Gewindebohrung 112, in die das Schraubgewinde einer Justierschraube 12 eingreift. Der Kopf 121 der Justierschraube 12 ist in einer Halteöffnung 89 am freien Ende 88 eines zweiten Haltearms 87 drehbar gehalten. Die Halterung der Justierschraube 12 kann so gestaltet sein, dass sie mit einer Nut an ihrem Kopf 121 in einem durch zwei gabelförmige Zinken am freien Ende 88 des zweiten Haltearms 87 gebildeten Schlitz drehbar geführt ist.Of the two bearing arms 81, 84 is at right angles from a first holding arm 86 from. This has at its free end a stop edge 87 on which the Kompensationsbimetall 11 rests. This is an elongated metal strip, the bearing point 111 at the stop edge 87 is located in its lower half. At its lower free end it carries a threaded bore 112 into which the screw thread of an adjusting screw 12 engages. The head 121 of the adjusting screw 12 is held rotatably in a holding opening 89 at the free end 88 of a second holding arm 87. The holder of the adjusting screw 12 may be designed so that it is rotatably guided with a groove on its head 121 in a slot formed by two fork-shaped prongs at the free end 88 of the second support arm 87.

Ein Verdrehen der Justierschraube 12 verändert somit den Abstand des freien Endes des Kompensationsbimetalls 11 zu dem freien Ende 88 des zweiten Haltearms 87 des Kuppelteils 8.A rotation of the adjusting screw 12 thus changes the distance of the free end of the compensation bimetal 11 to the free end 88 of the second support arm 87 of the dome part eighth

An dem Betätigungshebel 7 ist ein Haltefortsatz 76 angeformt, der nach unten in Richtung auf die Anschlagskante 87 hin weist. Er trägt an seinem freien Ende eine Abrundung 77. Er ist so lang ausgeführt, dass er mit seiner Abrundung 77 das Kompensationsbimetall 11 gegen die Anschlagskante 87 drücken kann. Das Kompensationsbimetall 11 ist somit durch die Justierschraube 12 und die Klemmlagerung an der Anschlagskante fest mit dem Kuppelteil 8 verbunden, wenn der Betätigungshebel 7 an dem ersten Scharnierlager 9 eingerastet ist. Auf diese Weise bilden der Betätigungshebel 7, das Kuppelteil 8 und das Kompensationsbimetall 11 eine einheitliche Baugruppe 14, welche vorgefertigt werden kann und als eine einheitliche Baugruppe 14 in das Gehäuse 2 eingesetzt und an der zweiten Lagerstelle 10 schwenkbar mit dem Gehäuse 2 verbunden werden kann.On the actuating lever 7, a holding extension 76 is formed, which points downward in the direction of the stop edge 87. He carries at its free end a rounding 77. He is so long executed that he can press with his rounding 77, the compensation bimetal 11 against the stop edge 87. The Kompensationsbimetall 11 is thus connected by the adjusting screw 12 and the clamping bearing on the stop edge fixed to the dome part 8 when the operating lever 7 is engaged on the first hinge bearing 9. In this way, the actuating lever 7, the coupling part 8 and the compensation bimetal 11 form a unitary assembly 14, which can be prefabricated and used as a unitary assembly 14 in the housing 2 and pivotally connected to the housing 2 at the second bearing point 10.

Mit dem Gehäuse 2 fest gekoppelt ist eine Einstelleinrichtung 13, welche auf das zweite freie Ende 113 des Kompensationsthermobimetalls 11 wirkt. Hier ist es eine Excenterschraube, die beim Verdrehen mit ihrem Excenterfortsatz 131 das Kompensationsthermobimetall 11 relativ zum Gehäuse 2 um den zweiten Lagerpunkt 10 verschwenken kann.Fixedly connected to the housing 2 is an adjusting device 13 which acts on the second free end 113 of the compensation thermobimetal 11. Here it is an eccentric screw, which can rotate the Kompensationsthermobimetall 11 relative to the housing 2 to the second bearing point 10 during rotation with its eccentric extension 131.

Eine Fesselfeder 15 beaufschlagt die Baugruppe 14 mit ihrem freien Ende entgegen dem Uhrzeigersinn, wobei das andere Ende der Fesselfeder gehäusefest angelenkt ist. Dadurch wird das freie Ende 113 des Kompensationsbimetalls 11 immer gegen den Excenterfortsatz 131 der Excenterschraube 13 gedrückt. Die Baugruppe 14 nimmt eine definierte Ruheposition ein, deren Drehlage durch Drehen an der Excenterschraube 13 variiert werden kann. Die Fesselfeder kann selbstverständlich auch an anderer Stelle an der Baugruppe 14 angreifen. Es kommt nur darauf an, dass irgend eine Art von Fesselung der Baugruppe 14 gegeben ist, unabhängig von der konkreten Realisierung. Insofern ist die in der Figur gezeigte Position und Ausgestaltung der Fesselfeder als Schenkelfeder nur ein exemplarisches Beispiel.A restraining spring 15 acts on the assembly 14 with its free end counterclockwise, wherein the other end of the restraint spring is hinged to the housing. As a result, the free end 113 of the compensation bimetal 11 is always pressed against the eccentric extension 131 of the eccentric screw 13. The assembly 14 assumes a defined rest position, the rotational position can be varied by turning the eccentric screw 13. Of course, the restraint spring can also be applied elsewhere on the assembly 14. It is only important that any kind of bondage of the assembly 14 is given, regardless of the specific implementation. In this respect, the position and design of the fetlock spring shown as a leg spring in the figure is only an exemplary example.

Wenn beispielsweise die Excenterschraube 13 ausgehend von der Position wie in der Figur dargestellt weiter im Uhrzeigersinn verdreht wird, so wird die Fesselfeder 15 die Baugruppe 14 aufgrund des sich verringernden Radius des Excenterfortsatzes 131 entgegen dem Uhrzeigersinn verschwenken. Dadurch verschwenkt auch die Lagerstelle 9 des Betätigungshebels 7 an dem Kuppelteil 8 entgegen dem Uhrzeigersinn, es ändert sich die Lage des Drehpunktes des Betätigungshebels 7 relativ zu dem Schneidenlager 51 so, dass der Abstand zwischen dem Betätigungsende 71 und dem Betätigungspunkt 72 größer wird. Wenn die Excenterschraube 13 ausgehend von der Position wie in der Figur dargestellt, entgegen dem Uhrzeigersinn verschwenkt wird, so wird die Baugruppe 14 durch den größeren Radius des Excenterfortsatzes 131 weiter im Uhrzeigersinn verschwenkt, entgegen der Kraft der Fesselfeder. Die Lagerstelle 9 verschwenkt im Uhrzeigersinn, es ändert sich die Lage des Drehpunktes des Betätigungshebels 7 relativ zu dem Schneidenlager 51 so, dass der Abstand zwischen dem Betätigungsende 71 und dem Betätigungspunkt 72 kleiner wird, und es kann sogar die Zugfeder bereits ein Stück weit in Richtung auf die Totpunktlage hin gedrückt werden.For example, if the eccentric screw 13 is rotated further from the position as shown in the figure further clockwise, the fetlock spring 15, the assembly 14 due to the decreasing radius of the eccentric extension 131 to pivot counterclockwise. Thereby pivots also the bearing point 9 of the actuating lever 7 on the dome part 8 in the counterclockwise direction, it changes the position of the pivot point of the actuating lever 7 relative to the cutting edge bearing 51 so that the distance between the actuating end 71 and the actuating point 72 is greater. When the eccentric screw 13 is pivoted counterclockwise starting from the position as shown in the figure, the assembly 14 is further pivoted clockwise by the larger radius of the eccentric extension 131, against the force of the fetlock spring. The bearing 9 pivots clockwise, it changes the position of the pivot point of the actuating lever 7 relative to the cutting edge bearing 51 so that the distance between the actuating end 71 and the actuating point 72 is smaller, and it may even be the tension spring already a bit in the direction pressed to the dead center.

Die Funktion der Baugruppe 14 im Zusammenspiel mit dem Schnappschaltwerk 5 soll nun erläutert werden. Wenn die Schiebermechanik am Angriffspunkt 73 angreift und in Pfeilrichtung S an dem Betätigungshebel 7 zieht, dann verschwenkt dieser um seinen Drehpunkt im ersten Scharnierlager 9 im Uhrzeigersinn. Das Betätigungsende 71 drückt auf den Betätigungspunkt 72 an der Zugfeder 6 und drückt diese über die Totpunktlage, so dass das Schnappschaltwerk 5 umschnappt.The function of the assembly 14 in conjunction with the snap-action mechanism 5 will now be explained. When the slide mechanism engages the point of application 73 and pulls in the direction of arrow S on the actuating lever 7, then this pivots about its pivot point in the first hinge bearing 9 in a clockwise direction. The operating end 71 presses on the actuating point 72 on the tension spring 6 and pushes them over the dead center, so that the snap-action mechanism 5 snaps around.

Oben wurde erläutert, wie durch Drehen der Excenterschraube 13 der Schaltabstand variiert werden kann. Wenn das Überlastrelais erst bei einem hohen Überstrom schalten soll, wenn also das Hauptthermobimetall sich weit ausgebogen hat, so erfordert dies einen großen Schaltabstand, die Excenterschraube 13 ist im Uhrzeigersinn zu verstellen. Wenn dagegen ein Schalten bereits bei einem niedrigen Überstrom erfolgen soll, wenn sich das Hauptthermobimetall nur ein geringes Stück verbogen hat, so ist die Excenterschraube 13 entgegen dem Uhrzeigersinn zu verstellen. Über die Excenterschraube kann bei Verwenden der erfindungsgemäßen Baugruppe 14 also sie Stromempfindlichkeit des Überlastrelais eingestellt werden.It was explained above how the switching distance can be varied by turning the eccentric screw 13. If the overload relay should switch only at a high overcurrent, so if the main bimetallic has bent far, so this requires a large switching distance, the eccentric screw 13 is to be adjusted clockwise. On the other hand, if switching is to take place even at a low overcurrent, when the main bimetal has bent only a small part, the eccentric screw 13 is to be adjusted counterclockwise. When using the module 14 according to the invention, the current sensitivity of the overload relay can therefore be set via the eccentric screw.

Die Funktion des Kompensationsbimetalls und damit der Temperaturkompensation ist die folgende. Wenn beispielsweise die Umgebungstemperatur oder die Gehäuseinnentemperatur sich erhöht, dann verbiegt sich das Kompensationsthermobimetall 11 im Uhrzeigersinn, in Pfeilrichtung U. Das Kompensationsbimetall ist über die Justierschraube 12 fest mit der Baugruppe 14 verbunden und durch den Haltefortsatz 76 an der Anschlagskante 87festgehalten. Es kann sich nur derjenige Teil des Kompensationsbimetalls zwischen der Anschlagskante 87und dem an der Excenterschraube 13 anliegenden freien Ende 113 verbiegen. Dadurch entsteht ein Abstand zwischen dem freien Ende 113 des Kompensationsbimetalls 11 und der Excenterschraube. Aufgrund der Fesselung mit der Fesselfeder 15 wird die Baugruppe 14 immer gegen den Excenterfortsatz 131 der Excenterschraube 13 gedrückt, und folglich entgegen dem Uhrzeigersinn um den zweiten Lagerpunkt 10 verschwenkt. Dadurch ändert sich die Lage des Drehpunktes 9 des Schalthebels 7 relativ zu dem Schneidlager 51 so, dass einer Verringerung des Schaltabstandes, wie sie durch Wirkung des Hauptthermobimetalls in Pfeilrichtung S angestrebt wird, entgegengewirkt wird.The function of the compensation bimetal and thus the temperature compensation is the following. If, for example, the ambient temperature or the housing interior temperature increases, the compensation bimetal 11 bends clockwise, in the direction of arrow U. The compensation bimetal is connected via the adjusting screw 12 fixed to the assembly 14 and held by the holding extension 76 at the stop edge 87. Only that part of the compensation bimetal can bend between the abutment edge 87 and the free end 113 bearing against the eccentric screw 13. This creates a distance between the free end 113 of the compensation bimetal 11 and the eccentric screw. Due to the bondage with the restraint spring 15, the assembly 14 is always pressed against the eccentric extension 131 of the eccentric screw 13, and thus pivoted counterclockwise around the second bearing point 10. As a result, the position of the fulcrum 9 of the shift lever 7 relative to the cutting bearing 51 changes so that a reduction of the switching distance, as is sought by the action of the main bimetallic strip in the direction of arrow S, is counteracted.

Ein Drehen der Justierschraube 12 bewirkt ein Verschwenken des Kompensationsbimetalls 11 um die Anschlagskante 87, wobei die Baugruppe 14 ebenfalls um die zweite Lagerstelle 10 verschwenkt und damit der Schaltabstand eingestellt wird. Zweck dieser Justierung ist es, bei einem über die Excenterschraube eingestellten Auslösestrom die Auslösung bei diesem Strom sicherzustellen, unabhängig von Fertigungstoleranzen oder Materialabweichungen bei den Kompensationsbimetallen. Die Justierung erfolgt bei jedem Gerät individuell, bei jedem Gerät wird individuell der richtige Schaltabstand bezogen auf eine mit der Excenterschraube 13 eingestellten Nenn-Stromstärke über die Justierschraube 12 eingestellt.Turning the adjusting screw 12 causes the Kompensationsbimetalls 11 to pivot about the stop edge 87, wherein the assembly 14 is also pivoted about the second bearing 10 and thus the switching distance is set. The purpose of this adjustment is to ensure the triggering of this current at a set via the eccentric tripping current, regardless of manufacturing tolerances or material deviations in the Kompensationsbimetallen. The adjustment is done individually for each device, with each device is individually set the correct switching distance based on a set with the eccentric screw 13 rated current through the adjusting screw 12.

Die erfindungsgemäße Baugruppe 14, welche den Betätigungshebel 7, das Kuppelteil 8 und das Kompensationsbimetall 11, miteinander verbunden in einer einzigen, vorfertigbaren Baugruppe, umfasst, erlaubt es also, die drei Funktionen Justierung, Auslösestromeinstellung und Temperaturkompensation mit nur einer einzigen Baugruppe durchzuführen. Dies gelingt dadurch, dass ein Verdrehen oder Verbiegen des Kompensationsbimetalls aufgrund der festen Kopplung mit dem Kuppelteil 8 ein Verschwenken des Drehpunktes 9 des Betätigungshebels relativ zu dem Schneidlager 51 des Schnappschaltwerkes zur Folge hat. Bei der Gerätefertigung muss nur noch die Baugruppe 14 im Gehäuse genau ausgerichtet werden, dann erfolgt die genaue Positionierung der Justage für Temperaturkompensation und Auslösestellung automatisch. Bezugszeichenliste 1 Überlastrelais 47 bewegliches Kontaktstück 2 Gehäuse 51 Schneidenlager 3 Hilfskontaktstelle 52 Schalthebel 4 Hilfskontaktstelle 53 Lagerfortsatz 5 Schnappschaltwerk 71 Betätigungsende 6 Zugfeder 72 Betätigungspunkt 7 Betätigungshebel 73 Angriffspunkt 8 Kuppelteil 74 kurzer Längssteg 9 erstes Scharnierlager 75 freies Ende 10 zweites Lager 76 Haltefortsatz 11 Kompensationsbimetall 77 Abrundung 12 Justierschraube Excenterschraube, 81 erster Lagerarm 82 zinkenartiger Vorsprung 13 Einstelleinrichtung 83 zinkenartiger Vorsprung 14 Baugruppe 84 zweiter Lagerarm 15 Fesselfeder 85 Lageröse 31 festes Kontaktstück 86 erster Haltearm 32 festes Kontaktstück 87 Anschlagskante 33 Kontaktbrücke 87 zweiter Haltearm 35 Hilfsstrompfad 88 freies Ende 36 bewegliches Kontaktstück 89 Halteöffnung 37 bewegliches Kontaktstück 111 Auflagestelle 41 festes Kontaktstück 112 Gewindebohrung 42 festes Kontaktstück 113 zweites freies Ende 43 Kontaktbrücke 121 Schraubenkopf 45 Hilfsstrompfad 131 Excenterfortsatz 46 bewegliches Kontaktstück The assembly 14 according to the invention, which comprises the actuating lever 7, the dome part 8 and the compensation bimetal 11 connected together in a single, prefabricatable assembly, thus allows the three functions adjustment, tripping current adjustment and temperature compensation to be carried out with only a single assembly. This is achieved in that a twisting or bending of the compensation bimetal due to the fixed coupling with the dome part 8 has a pivoting of the fulcrum 9 of the actuating lever relative to the cutting bearing 51 of the snap-action mechanism result. In device manufacturing, only the assembly 14 in the housing must be precisely aligned, then the exact positioning of the adjustment for temperature compensation and release position is done automatically. <U> REFERENCE LIST </ u> 1 Overload relay 47 movable contact piece 2 casing 51 cutting camp 3 Auxiliary contact point 52 gear lever 4 Auxiliary contact point 53 Bearing extension 5 Switch movement 71 actuating end 6 mainspring 72 actuation point 7 actuating lever 73 attackpoint 8th A coupler 74 short longitudinal ridge 9 first hinge bearing 75 free end 10 second camp 76 Holding projection 11 compensation bimetal 77 rounding off 12 Adjusting screw eccentric screw, 81 first bearing arm 82 prong-like projection 13 adjustment 83 prong-like projection 14 module 84 second bearing arm 15 restraint spring 85 clevis 31 solid contact piece 86 first holding arm 32 solid contact piece 87 stop edge 33 Contact bridge 87 second support arm 35 Auxiliary current path 88 free end 36 movable contact piece 89 holding opening 37 movable contact piece 111 support point 41 solid contact piece 112 threaded hole 42 solid contact piece 113 second free end 43 Contact bridge 121 screw head 45 Auxiliary current path 131 Excenterfortsatz 46 movable contact piece

Claims (8)

  1. Electrical overcurrent relay (1), which comprises a snap-action switching mechanism (5), which can be snapped over between two stable switching positions, an actuating lever (7), which causes the snap-action switching mechanism (5) to snap over in the event of an overcurrent, a main bimetallic strip and a compensation bimetallic strip (11), and a slide mechanism which acts on the actuating lever (7) for coupling between the main bimetallic strip and the actuating lever (7), wherein the compensation bimetallic strip (11), a coupling part (8) which is connected to the compensation bimetallic strip (11) and the actuating lever (7) which is mounted pivotably on the coupling part (8) forms an assembly which can be inserted in prefabricated form into the overcurrent relay (1) and is capable of being pivoted about a fulcrum (10) fixed to the housing, the position of the fulcrum (9) of the actuating lever (7) being variable relative to the snap-action switching mechanism (5) by virtue of bending or pivoting of the compensation bimetallic strip (11).
  2. Electrical overcurrent relay (1) according to Claim 1, characterized in that the coupling part (8) has a first arm (88) and the compensation bimetallic strip (11) is coupled to the first arm (88) of the coupling part (8) via an adjusting screw (12).
  3. Electrical overcurrent relay (1) according to Claim 2, characterized in that the coupling part (8) has a second arm (86) with a stop (87) for the compensation bimetallic strip (11) and the actuating lever (7) has a holding protrusion (76), which pushes the compensation bimetallic strip (11) against the stop (87).
  4. Electrical overcurrent relay (1) according to Claim 3, characterized in that an adjusting device (13) for pivoting the compensation bimetallic strip (11) about the fulcrum (10) fixed to the housing is provided.
  5. Electrical overcurrent relay (1) according to Claim 1, characterized in that the coupling part (8) has a first bearing arm (81), on which the fulcrum (9) of the actuating lever (7) is mounted, and a second bearing arm, on which it is mounted pivotably and fixed to the housing.
  6. Electrical overcurrent relay (1) according to Claim 5, characterized in that the first (81) and second bearing arms are aligned with one another in opposite directions.
  7. Electrical overcurrent relay (1) according to Claim 1, characterized in that the actuating lever (7) is a twin-armed lever, wherein a slide (5) which is coupled to the main bimetallic strip can act on the first end (73) of said twin-armed lever and thus pivot the actuating lever (7), and the second end (71) of said twin-armed lever interacts with the switching lever (52) when pivoting so as to cause the switching lever to snap over.
  8. Electrical overcurrent relay (1) according to Claim 7, characterized in that the switching lever (52) is mounted pivotably in a knife-edge bearing (51), which is fixedly connected to the housing, and a tension spring (6), on which the second end of the actuating lever (7) can act, acts with one end above the knife-edge bearing (51), with the tension-spring-loaded switching lever (52) being caused to snap over when the actuating lever (7) is pivoted by its second end.
EP09744954.0A 2008-11-12 2009-10-21 Electrical overcurrent relay with a borne operating lever Active EP2345057B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008056999 2008-11-12
DE102009048245A DE102009048245A1 (en) 2008-11-12 2009-10-05 Electrical overcurrent relay with a rotatably mounted actuating lever
PCT/EP2009/007523 WO2010054738A1 (en) 2008-11-12 2009-10-21 Electrical overcurrent relay with a borne operating lever

Publications (2)

Publication Number Publication Date
EP2345057A1 EP2345057A1 (en) 2011-07-20
EP2345057B1 true EP2345057B1 (en) 2014-07-23

Family

ID=41475533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09744954.0A Active EP2345057B1 (en) 2008-11-12 2009-10-21 Electrical overcurrent relay with a borne operating lever

Country Status (4)

Country Link
EP (1) EP2345057B1 (en)
CN (2) CN201364862Y (en)
DE (1) DE102009048245A1 (en)
WO (1) WO2010054738A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201364862Y (en) * 2008-11-12 2009-12-16 Abb股份有限公司 Over current relay with operating rod disposed on rotating pivot
CN201845719U (en) 2010-03-18 2011-05-25 Abb股份公司 Electric over-current relay with modular structure
DE102014003102B4 (en) 2013-03-28 2021-04-29 Abb Schweiz Ag Electrical overcurrent relay
DE102014003263B4 (en) 2013-03-28 2023-08-24 Abb Schweiz Ag Electrical overcurrent relay
DE202013002978U1 (en) 2013-03-28 2013-05-02 Abb Ag Electrical overcurrent relay in modular design
DE102014003421A1 (en) 2013-03-28 2014-10-02 Abb Ag Electrical overcurrent relay
CN106169399B (en) * 2016-08-31 2018-10-09 厦门宏发开关设备有限公司 A kind of interlocking mechanism, the control panel and breaker for having the interlocking mechanism
DE102017220780B3 (en) * 2017-11-21 2019-02-21 Volkswagen Aktiengesellschaft Tactile switch and motor vehicle with a push button

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT290654B (en) * 1966-11-24 1971-06-11 Francesco Fantini Three-phase, electrothermal relay
US3743992A (en) * 1972-08-04 1973-07-03 Westinghouse Electric Corp Thermally responsive electrical control device for polyphase currents
US6707657B1 (en) * 1999-04-19 2004-03-16 Pbt (Ip) Limited Integrated electrically actuated mechanical release mechanism
DE29917173U1 (en) 1999-09-30 2000-08-24 Abb Patent Gmbh Actuator for an electrical overcurrent relay
JP5003426B2 (en) * 2007-11-20 2012-08-15 富士電機機器制御株式会社 Thermal overload relay
CN201364862Y (en) * 2008-11-12 2009-12-16 Abb股份有限公司 Over current relay with operating rod disposed on rotating pivot

Also Published As

Publication number Publication date
WO2010054738A1 (en) 2010-05-20
CN201364862Y (en) 2009-12-16
EP2345057A1 (en) 2011-07-20
DE102009048245A1 (en) 2010-05-20
CN102217022A (en) 2011-10-12

Similar Documents

Publication Publication Date Title
EP2345057B1 (en) Electrical overcurrent relay with a borne operating lever
EP0543208B1 (en) Protective circuit-breaker with rocker
DE102009043105B4 (en) Electrical switching device with a contact bridge
CH631573A5 (en) OVERCURRENT PROTECTION SWITCH WITH SWITCH ON AND OFF.
EP1728260B1 (en) Switch mechanism for an electrical installation switch device
WO2006097164A1 (en) Protective circuit breaker for protecting an electric circuit
DE3739806C2 (en)
DE10058068A1 (en) Thermal overload relay has projection that is formed to the intermediate section of a tensioning spring and adjacent to a detent lever
EP1812944A1 (en) Electrical installation switching device
EP2027590B1 (en) Thermal and/or magnetic overload trip
EP0391086B1 (en) Push button operated overload circuit breaker
EP0500138B1 (en) Protective switch
EP2345056B1 (en) Electrical overcurrent relay having a rocker which is borne such that it can pivot
DE10133879B4 (en) Switchgear with a key switch
EP1555681B1 (en) Electrical switch
DE102008039935B4 (en) Thermally triggered overload relay
DE102011088838B4 (en) Operating arrangement for an electrical switch
EP1643525B1 (en) Adjusting module for an overcurrent tripping device of a protection circuit breaker
EP2264733A2 (en) Trigger with trigger mechanism which can be adjusted for U or A triggering
EP0586733A1 (en) Snap action driving arrangement for circuit breakers
EP0491250A2 (en) Installation apparatus
DE102014003102B4 (en) Electrical overcurrent relay
DE4424332A1 (en) Line protection switch
WO2007036282A1 (en) Electrical service device
DE1563579B2 (en) PUSH BUTTON ACTUATED SWITCH

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20110328

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA RS

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KOMMERT, RICHARD

Inventor name: KEILBACH, THOMAS

Inventor name: RAULE, CORINNA

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20140423

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 679282

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140815

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502009009689

Country of ref document: DE

Effective date: 20140828

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20140723

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141023

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141023

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141124

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141024

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141123

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502009009689

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141021

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20141023

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141031

26N No opposition filed

Effective date: 20150424

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141031

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141023

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141031

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141021

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 679282

Country of ref document: AT

Kind code of ref document: T

Effective date: 20141021

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141021

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20091021

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20161020

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20161024

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140723

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20180629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171021

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502009009689

Country of ref document: DE

Owner name: ABB SCHWEIZ AG, CH

Free format text: FORMER OWNER: ABB AG, 68165 MANNHEIM, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20231020

Year of fee payment: 15