EP0847070B1 - Over current circuit breaker, particularly motor circuit breaker - Google Patents

Over current circuit breaker, particularly motor circuit breaker Download PDF

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Publication number
EP0847070B1
EP0847070B1 EP96120845A EP96120845A EP0847070B1 EP 0847070 B1 EP0847070 B1 EP 0847070B1 EP 96120845 A EP96120845 A EP 96120845A EP 96120845 A EP96120845 A EP 96120845A EP 0847070 B1 EP0847070 B1 EP 0847070B1
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EP
European Patent Office
Prior art keywords
switch
circuit breaker
lever
toggle
over
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96120845A
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German (de)
French (fr)
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EP0847070A3 (en
EP0847070A2 (en
Inventor
Hans-Peter Meili
Karin Spengler
Stephan Spengler
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Rockwell Automation Switzerland GmbH
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Rockwell Automation AG
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Publication of EP0847070A2 publication Critical patent/EP0847070A2/en
Publication of EP0847070A3 publication Critical patent/EP0847070A3/en
Application granted granted Critical
Publication of EP0847070B1 publication Critical patent/EP0847070B1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/50Manual reset mechanisms which may be also used for manual release
    • H01H71/56Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel

Definitions

  • the present invention relates to an overcurrent protection switch, in particular Motor protection switch with fixed contact pieces housed in a housing and this in the ON position of the overcurrent protection switch for each phase bridging, under the action of at least one opening spring, movable contact pieces, either with a manual override or switch lock that can be actuated by overcurrent release elements, the one from a knee lever bracket and from a shift bracket formed pair of toggle levers on the movable contact pieces guided in the housing acts, the end region facing away from the knee joint of the pair of toggle levers the toggle lever bracket on a swivel mounted in the housing in the switch-on position to one that can be influenced by the overcurrent release elements Release pawl supporting pawl is pivoted and the Manual control device with the knee joint of the pair of knee levers in operative connection stands.
  • an overcurrent protection switch in particular Motor protection switch with fixed contact pieces housed in a housing and this in the ON position of the overcurrent protection switch for each phase bridging, under the action of at least one opening spring,
  • An overcurrent protection switch of the type mentioned is from DE-C1-4304769 known.
  • the switch tab is closer to the movable one Contact pieces.
  • the Tip of the V-shaped latch lever is supported in the on position of the Overcurrent protection switch on a detachable by overcurrent release elements Jack off.
  • From DE-PS-2123765 is another overcurrent protection switch with the Fixed contact pieces in the switch-on position, bridging movable phases Contact pieces known.
  • the movable contact pieces are on one Gearshift plate hinged, which forms a pair of toggle levers with a ratchet lever.
  • the pair of toggle levers In in the switched-on position, the pair of toggle levers is stretched over the dead center position, when switched off, the pair of knee levers buckles and enables fast Separation of the movable contact pieces from the fixed contact pieces.
  • the ratchet lever is in the switched-on position on an overcurrent release device actuated jack supported.
  • the object of the present invention is the overcurrent protection switch mentioned above to simplify and improve, so that a quick Switching off both with an overcurrent release and with a manual switch-off on the operating speed of the manual operating device independently, with the same individual parts in an economically advantageous manner reached and tripping by overcurrent and tripping by hand by two different positions of the manual control device from can be determined outside.
  • the task is solved in that the hinge axes of the shift tab and the toggle lever bracket and the pivot bearing axis of the ratchet lever in the on position of the overcurrent protection switch in one direction on one slightly curved line so that the switch tab that Knee lever bracket and the ratchet lever in the over-center position, in an extended position Position are cocked by the switch-off spring, with the latch lever on the release pawl and that between the switch plate and the knee lever plate Support the horizontal knee joint on a detachably latched stop slide and the latch lever of this in the on position of the overcurrent protection switch assumed position in both directions around the pivot bearing axis is designed to be pivotable, of which in one direction after actuation the release pawl and in the other direction after releasing the latch of the Stop slide by actuating the manual actuation device from the Einin the off position and that the manual control device with the Knee joint of the pair of toggle levers over at least one during a switch-on movement effective hand surface in operative connection of the manual operating device stands
  • the bidirectionally effective ratchet lever can be achieved with the same components both with overcurrent tripping and A quick interruption of the contact points even when switching off manually.
  • the manual control device takes over after triggering by overcurrent different position than after a manual switch off, because the ratchet lever at an overcurrent release the knee joint and also the one connected with it Do not let the manual control device bend as far as when switching it off manually.
  • the latch lever is advantageously designed with two arms and has one the latch lever in its off position of the overcurrent protection switch existing rest position from the release latch keeping spaced Torsion spring on.
  • the two-arm design of the ratchet lever is the Realization of the support of the ratchet lever in the on position of the Overcurrent protection switch on the release jack simple.
  • the torsion spring ensures making sure that the latch lever is in the relaxed position, in the off position of the overcurrent protection switch remains in the standby position.
  • the release pawl can be used with one of these in the rest position in the pawl lever locking position holding torsion spring.
  • the in the The release pawl is in the relaxed position thanks to this torsion spring Stand by position.
  • the manual control device can have two opposite surfaces having, two-pronged, pivoting shift fork in connection, one of the opposite inner surfaces of the shift fork the knee joint if the stop slide is blocked during a switch-off movement by hand takes from the dead center position to the pair of knee levers by buckling into the Bring the switch off position and the other inner surface when switching on the manual control device acting on the knee joint Driver surface that the knee joint in the dead center position when switched on suppressed.
  • This arrangement enables the overcurrent protection switch to be switched off even when the knee joint is in the on position supporting stop slider remains blocked for some reason.
  • FIG 1 is the side view of an overcurrent protection switch when removed Housing wall shown.
  • this figure shows only the most essential for the description of the invention Parts of the overcurrent protection switch.
  • the housing 1 In the housing 1 are fixed contact pieces 2 attached.
  • the in the on position of the overcurrent protection switch the fixed contact pieces 2, bridging movable contact pieces in phases 3 are separated from the fixed contact pieces 2 in FIG. 1, the switch is in the off position.
  • the movable contact pieces 3 are by at least one switch-off spring, not shown, acting on the pin 4 brought into the off position and held there.
  • the pins 4 are located at one end region of a pivotally mounted in the housing 1 Shift lever 5.
  • the other end of the shift lever 5 presses on the contact carrier 6 of the movable contact pieces 3 against the force of a closing spring 7. acts on the end portion of the shift lever 5 carrying the pin 4 Switch lock 8.
  • the operation of the switch lock 8 is based on the Figures 5 to 40 explained.
  • the key switch 8 is either by a Manual control device containing rotary knob 9 by hand or by Overcurrent release elements containing thermal and / or dynamic elements actuated.
  • the knob 9 and its position is in that shown in Fig.2 Top view of the overcurrent protection switch that is switched off can be seen particularly well.
  • FIGs 5, 6 and 7 show parts of the overcurrent protection switch in the Off position.
  • the housing 1, the knob 9 and the key switch 8 indicated schematically. 6 shows the position of the rotary knob 9 in the exhibition.
  • Fig. 7 is a clearer, schematic representation of the most important parts of the switch lock 8.
  • the switch lock 8 is in this Switch position relaxed.
  • a switching tab 10 articulated with the hinge axis 11.
  • the Switch tab 10 is articulated to a toggle lever tab 12, these two tabs a pair of toggle levers with the one between them Form knee joint 13.
  • Toggle lever bracket 12 The end region facing away from the knee joint 13 Toggle lever bracket 12 is on a in the housing 1 about the pivot bearing axis 14 in Pawl lever 15 pivotable in both directions with the articulated axis 16.
  • one is pivotable in the housing 1 stored release pawl 17 in connection.
  • the Release pawl 17 In the rest position, the Release pawl 17 the pivoting movement of the pawl lever 15 in a counterclockwise direction.
  • the two-armed ratchet lever 15 is in the rest position by a torsion spring 18 in a slightly spaced from the release pawl 17 Position held.
  • the release pawl 17 remains thanks to the torsion spring 19 in the Lock the rest position in a counterclockwise direction Position.
  • the rotary knob 9 is above a bevel gear, not shown with a two-armed manual control lever mounted in the housing 1 20 in a positive connection.
  • the manual control lever 20 has one Arm on a driver surface 21.
  • Detachably latchable stop slide 22 is provided to support the knee joint 13 in the Dead center position when the overcurrent protection switch (Fig. 16) is on Detachably latchable stop slide 22 is provided.
  • This stop slide 22 is in the unlatched position by a spring 23 loaded with the Knee joint 13 in a small area around the switch-on position in butt connection. In the switched-on position, the stop slide 22 is through the manual actuation device latched in a manner not shown. At the beginning of one Disengaging movement releases the latch, after which the stop slide 22nd is displaceable in both directions from the latched position.
  • the Knee joint 13 is in the direction facing away from the stop slide 22 the action of a return spring 24.
  • Figures 8 to 13 show the overcurrent protection switch in two intermediate positions during a switch-on movement.
  • the knob 9 is in by hand Turned clockwise.
  • the manual actuation lever 20 rotates counterclockwise until the driver surface 21 comes into engagement with the knee joint 13.
  • the Pawl lever 15 is supported on the release pawl 17 and thus in the further pivoting movement counterclockwise prevented.
  • the hinge axis 16 on the ratchet lever 15 remains immobile in relation to the housing 1. From this moment on, the driving surface 21 takes the knee joint 13 counterclockwise with.
  • FIG. 17 to 28 show the overcurrent protection switch in four different Intermediate positions during an opening movement.
  • the switch-off movement begins with the rotary knob 9 being turned counterclockwise. Then the unlatching of the stop slide, which can be clearly seen in FIG. 19 in particular 22 done by the manual control device.
  • the stop slide 22 is due to the action of the opening spring by the knee joint 13 in Fig. 19 shifted to the right. Once the hinge axis 16 between the toggle link 12 and the ratchet lever 15 from the dead center position shown in Fig. 19 comes out, this arrangement buckles as shown in Fig. 22, the Contact separation takes place suddenly.
  • the return spring 24 pulls the knee joint 13 and causes the pair of knee levers buckles (Fig. 28) and reaches the switch-off position (Fig. 7) becomes.
  • the two-armed manual control lever 20 has on its the bevel gear arm turned away a two-pronged shift fork with two opposite inner surfaces.
  • One of the surfaces is that based on FIGS. 8 to 13 Driver surface 21 already described.
  • the opposite surface 25 is effective in a switch-off movement when the stop slide 22 from any Remains basically blocked. In this case, the pair of toggle levers 10, 12 do not buckle and the switch-off movement cannot be carried out. In In this case, the surface 25 takes this when turning the knob 9 Knee joint 13 in the direction away from the stop slide 22. To If the dead center position is exceeded, the pair of toggle levers 10, 12 buckles, as a result of which a quick contact separation is initiated.
  • Figures 29 to 34 show the overcurrent protection switch after tripping through the overcurrent tripping devices.
  • Figures 29 to 31 is the State after triggering while held and in Figures 32 to 34 Free rotary knob 9.
  • the overcurrent release elements When the overcurrent release elements respond, it rotates the release pawl 17 in a counterclockwise direction away from the pawl lever 15.
  • the switched on overcurrent protection switch Fig. 14 to 16
  • it means that the Support of the pawl lever 15 is lifted counterclockwise.
  • the knob 9 Independently that the knob 9 is held or not, the pivots Pawl lever 15 after pivoting the release pawl 17 in a counterclockwise direction.
  • bidirectional acting latch lever 15 can also be used to actuate a signal switch be used to trigger the overcurrent protection switch to display the trigger organs.

Landscapes

  • Protection Of Generators And Motors (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Keying Circuit Devices (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Breakers (AREA)
  • Mechanical Operated Clutches (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

The overcurrent protective switch contains a switch lock 8, which, in the switched on position, holds the movable contact pieces 3 in engagement with the fixed contact pieces 2 against the force exerted by at least one switch-off spring. The switch lock 8 comprises a switch splicing plate 10 connected to the movable contact pieces 3 in an articulated mechanism; a toggle lever splicing plate 12 connected to the switch splicing plate 10 at a toggle joint 13; and a pawl lever 15 mounted in a position inside the housing 1, which is supported by a trigger pawl 17 and connected with the toggle lever splicing plate 12 in an articulate mechanism. The joint axles 11, 13, 16 of the switch splicing plate 10 and the toggle lever splicing plate 12, as well as the pivot bearing axle 14 of the pawl lever 15 are in the on state arranged on a slightly curved line, so that a past dead center condition is created. Under this condition, the toggle joint 13 is supported against a latched stop slide 22, the latching of which is released when switched off manually. The pawl lever 15 is capable of swiveling in both directions, that is, in one direction when the trigger pawl 17 is actuated, and in the other direction when switched off manually. Thus, a quick switching off is achieved either manually or by a current surge, using only a few simple components.\!

Description

Die vorliegende Erfindung betrifft einen Ueberstromschutzschalter, insbesondere Motorschutzschalter mit in einem Gehäuse untergebrachten Festkontaktstücken und diese in der Einschaltstellung des Ueberstromschutzschalters je Phase überbrückenden, unter der Wirkung von mindestens einer Ausschaltfeder stehenden, beweglichen Kontaktstücken, mit einem entweder durch eine Handbetätigungsvorrichtung oder durch Ueberstromauslöseorgane betätigbaren Schaltschloss, das über ein aus einer Kniehebellasche und aus einer Schaltlasche gebildetes Kniehebelpaar auf die im Gehäuse geführten, beweglichen Kontaktstücke wirkt, wobei der dem Kniegelenk des Kniehebelpaares abgekehrte Endbereich der Kniehebellasche auf einem im Gehäuse schwenkbar gelagerten, sich in der Einschaltstellung auf eine durch die Ueberstromauslöseorgane beeinflussbare Auslöseklinke stützenden Klinkenhebel schwenkbar gelagert ist und die Handbetätigungsvorrichtung mit dem Kniegelenk des Kniehebelpaares in Wirkverbindung steht.The present invention relates to an overcurrent protection switch, in particular Motor protection switch with fixed contact pieces housed in a housing and this in the ON position of the overcurrent protection switch for each phase bridging, under the action of at least one opening spring, movable contact pieces, either with a manual override or switch lock that can be actuated by overcurrent release elements, the one from a knee lever bracket and from a shift bracket formed pair of toggle levers on the movable contact pieces guided in the housing acts, the end region facing away from the knee joint of the pair of toggle levers the toggle lever bracket on a swivel mounted in the housing in the switch-on position to one that can be influenced by the overcurrent release elements Release pawl supporting pawl is pivoted and the Manual control device with the knee joint of the pair of knee levers in operative connection stands.

Ein Ueberstromschutzschalter der eingangs erwähnten Art ist aus der DE-C1-4304769 bekannt. Bei diesem Ueberstromschutzschalter werden die beweglichen Kontaktstucke gegen die Wirkung einer Ausschaltfeder durch ein aus einer Kniehebellasche und aus einer Schaltlasche gebildetes Kniehebelpaar in der Einschaltstellung gehalten. Die Schaltlasche liegt näher zu den beweglichen Kontaktstücken. Das der Schaltlasche abgekehrte Ende der Kniehebellasche ist an einem Ende eines mit seinem anderen Ende im Gehäuse des Ueberstromschutzschalters schwenkbar gelagerten V-förmigen Klinkenhebel gelagert. Die Spitze des V-förmigen Klinkenhebels stützt sich in der Einschaltstellung des Ueberstromschutzschalters an einer durch Ueberstromauslöseorgane lösbaren Klinke ab. Bei einer Ueberstromauslösung schwenkt die Klinke vom Klinkenhebel weg, worauf das Klinkenhebelpaar zusammenbricht und die Ausschaltfeder die beweglichen Kontaktstücke von den Festkontaktstücken trennt. Dieser Trennvorgang erfolgt mit einer verhältnismässig hoher Ausschaltgeschwindigkeit. Damit diese Schnellausschaltung auch bei der Ausschaltung von Hand von der Ausschaltbewegung des Handantriebes unabhängig ablaufen kann, ist bei diesem Ueberstromschutzschalter ein zusätzlicher Ausschalthebel vorgesehen. Der Ausschalthebel ist in einem Lager an der Klinke angelenkt und steht unter Federzug zum Gehäuse. Bei einer Ausschaltbewegung von Hand nimmt ein Mitnehmer den Ausschalthebel in seiner Längsrichtung mit und bringt so die Klinke über seine Lagerung mit, wonach die Klinke den Klinkenhebel nicht mehr stützt. Sobald die Stützung des Klinkenhebels weggezogen ist, bricht das Klinkenhebelpaar zusummen, worauf eine Schnellausschaltung erfolgt. Ein Nachteil dieses Ueberstromschutzschalters besteht darin, dass für seine Betätigung viele Teile benötigt sind. Dies bedeutet nebst einer komplizierten und nur mit verhältnismässig hohem Aufwand durchführbaren Montage wirtschaftliche Nachteile. Ein weiterer Nachteil dieser Anordnung ist dadurch gegeben, dass an der Handbetätigungsvorrichtung eine Auslösung durch Ueberstrom von einer Handauslösung von aussen nicht feststellbar ist. Die Handbetätigungsvorrichtung nimmt in beiden Fällen die gleiche AUS-Stellung ein.An overcurrent protection switch of the type mentioned is from DE-C1-4304769 known. With this overcurrent protection switch, the movable Contact pieces against the effect of an opening spring by one out of one Knee lever bracket and pair of knee levers formed from a switching bracket in the Switched on position held. The switch tab is closer to the movable one Contact pieces. The end of the toggle lever bracket facing away from the switch bracket at one end with its other end in the housing of the overcurrent protection switch pivoted V-shaped latch lever. The Tip of the V-shaped latch lever is supported in the on position of the Overcurrent protection switch on a detachable by overcurrent release elements Jack off. In the event of an overcurrent release, the pawl pivots from the pawl lever away, whereupon the ratchet lever pair collapses and the switch-off spring separates movable contact pieces from the fixed contact pieces. This separation process takes place with a relatively high switch-off speed. In order to this quick switch-off even when switching off manually from the switch-off movement of the manual drive can run independently, is with this Overcurrent protection switch provided an additional switch-off lever. The switch-off lever is hinged to the jack in a bearing and is under Spring balancer to the housing. With a switch-off movement by hand takes one Carrier with the switch-off lever in its longitudinal direction and brings the Pawl over its storage with, after which the pawl no longer the pawl lever supports. As soon as the jack lever support is pulled away, this breaks Sum the pair of ratchet levers, whereupon a quick switch-off takes place. A disadvantage this overcurrent protection switch is that for its operation many parts are needed. This means besides a complicated and only with comparatively high cost feasible assembly economic disadvantages. Another disadvantage of this arrangement is that the Manual control device triggering by overcurrent from a manual trigger cannot be determined from the outside. The manual override takes the same OFF position in both cases.

Aus der DE-PS-2123765 ist ein weiterer Ueberstromschutzschalter mit die Festkontaktstücke in der Einschaltstellung in jeder Phase überbrückenden beweglichen Kontaktstücken bekannt. Die beweglichen Kontaktstücke sind an einer Schaltlasche angelenkt, die mit einem Klinkenhebel ein Kniehebelpaar bildet. In der Einschaltstellung ist das Kniehebelpaar über die Totpunktlage gespannt, beim Ausschalten knickt das Kniehebelpaar ein und ermöglicht eine schnelle Trennung der beweglichen Kontaktstücke von den Festkontaktstücken. Der Klinkenhebel ist in der Einschaltstellung an einer durch Ueberstromauslöseorgane betätigbaren Klinke abgestützt. Sowohl bei Ueberstromauslösung als auch bei Auslösung von Hand knickt das Kniehebelpaar ein, wonach eine Ausschaltfeder die beweglichen Kontaktstücke von den Festkontaktstücken verhältnismässig schnell trennt. Dieses Schaltschloss ist kompliziert und daher teuer. Ein weiterer Nachteil auch dieser Anordnung besteht darin, dass eine Ueberstromauslösung und eine Handauslösung an der Handbetätigungsvorrichtung von aussen nicht unterscheidbar ist. Die Handbetätigungsvorrichtung dieses Ueberstromschutzschalters kennt nur eine EIN- und eine AUS-Stellung.From DE-PS-2123765 is another overcurrent protection switch with the Fixed contact pieces in the switch-on position, bridging movable phases Contact pieces known. The movable contact pieces are on one Gearshift plate hinged, which forms a pair of toggle levers with a ratchet lever. In in the switched-on position, the pair of toggle levers is stretched over the dead center position, when switched off, the pair of knee levers buckles and enables fast Separation of the movable contact pieces from the fixed contact pieces. The The ratchet lever is in the switched-on position on an overcurrent release device actuated jack supported. Both with overcurrent release as well when released by hand, the pair of knee levers buckles, after which an opening spring the movable contact pieces from the fixed contact pieces are proportionate separates quickly. This key switch is complicated and therefore expensive. On Another disadvantage of this arrangement is that an overcurrent trip and a manual release on the manual control device from the outside is indistinguishable. The manual override of this overcurrent protection switch only knows an ON and an OFF position.

Die Aufgabe der vorliegenden Erfindung ist es, den eingangs erwähnten Ueberstromschutzschalter zu vereinfachen und zu verbessern, so dass ein schnelles Ausschalten sowohl bei einer Ueberstromauslösung als auch bei einem Handausschalten von der Betätigungsgeschwindigkeit der Handbetätigungsvorrichtung unabhängig, mit den gleichen Einzelteilen in wirtschaftlich vorteilhafter Weise erreicht und eine Auslösung durch Ueberstrom und eine Auslösung von Hand durch zwei unterschiedliche Stellungen der Handbetätigungsvorrichtung von aussen festgestellt werden kann. The object of the present invention is the overcurrent protection switch mentioned above to simplify and improve, so that a quick Switching off both with an overcurrent release and with a manual switch-off on the operating speed of the manual operating device independently, with the same individual parts in an economically advantageous manner reached and tripping by overcurrent and tripping by hand by two different positions of the manual control device from can be determined outside.

Die gestellte Aufgabe ist dadurch gelöst, dass die Gelenkachsen der Schaltlasche und der Kniehebellasche und die Schwenklagerachse des Klinkenhebels in der Einschaltstellung des Ueberstromschutzschalters in einer Richtung auf einer leicht gekrümmten Linie so hintereinander liegen, dass die Schaltlasche, die Kniehebellasche und der Klinkenhebel in der Uebertotpunktlage, in gestreckter Stellung durch die Ausschaltfeder gespannt sind, wobei der Klinkenhebel sich an der Auslöseklinke und das zwischen der Schaltlasche und der Kniehebellasche liegende Kniegelenk an einem lösbar verklinkten Anschlagschieber abstützen und der Klinkenhebel von dieser in der Einschaltstellung des Ueberstromschutzschalters eingenommenen Stellung aus in beide Richtungen um die Schwenklagerachse schwenkbar ausgebildet ist, wovon in die eine Richtung nach Betätigung der Auslöseklinke und in die andere Richtung nach Lösen der Verklinkung des Anschlagschiebers durch Betätigung der Handbetätigungsvorrichtung aus der Einin die Ausschaltstellung und dass die Handbetätigungsvorrichtung mit dem Kniegelenk des Kniehebelpaares über mindestens eine bei einer Einschaltbewegung der Handbetätigungsvorrichtung wirksame Mitnehmerfläche in Wirkverbindung steht und das Kniegelenk in der dem Anschlagschieber abgekehrten Richtung durch eine Rückstellfeder federbelastet ist. Dadurch, dass die Schaltlasche, die Kniehebellasche und der Klinkenhebel in der Einschaltstellung des Ueberstromschutzschalters auf einer Uebertotpunktlinie ausgerichtet sind und der Klinkenhebel sich an der Auslöseklinke abstützt, kann durch Betätigung der Auslöseklinke durch einen Ueberstrom nach Einknicken des Kniehebelpaares eine schnelle Ausschaltung erreicht werden. Durch Lösen der Verklinkung des Anschlagschiebers kann das Kniegelenk des Kniehebelpaares aus der eingeschalteten Stellung ausknicken, wodurch die Gelenkstelle der Kniehebellasche am Klinkenhebel gestreckt wird und aus der Totpunktlage kommt. Sobald diese Gelenkstelle aus der Totpunktlage gekommen ist, schwenkt der Klinkenhebel von der Auslöseklinke weg und leitet eine schnelle, sprunghafte Ausschaltung des Ueberstromschutzschalters ein. Dank dem bidirektional wirksamen Klinkenhebel erreicht man mit den gleichen Bauteilen sowohl bei Ueberstromauslösung als auch beim Handausschalten eine schnelle Unterbrechung der Kontaktstellen. Die Handbetätigungsvorrichtung nimmt nach Auslösung durch Ueberstrom eine andere Stellung ein als nach einer Handausschaltung, weil der Klinkenhebel bei einer Ueberstromauslösung das Kniegelenk und auch die damit wirkverbundene Handbetätigungsvorrichtung nicht so weit einknicken lässt wie bei einem Handausschalten.The task is solved in that the hinge axes of the shift tab and the toggle lever bracket and the pivot bearing axis of the ratchet lever in the on position of the overcurrent protection switch in one direction on one slightly curved line so that the switch tab that Knee lever bracket and the ratchet lever in the over-center position, in an extended position Position are cocked by the switch-off spring, with the latch lever on the release pawl and that between the switch plate and the knee lever plate Support the horizontal knee joint on a detachably latched stop slide and the latch lever of this in the on position of the overcurrent protection switch assumed position in both directions around the pivot bearing axis is designed to be pivotable, of which in one direction after actuation the release pawl and in the other direction after releasing the latch of the Stop slide by actuating the manual actuation device from the Einin the off position and that the manual control device with the Knee joint of the pair of toggle levers over at least one during a switch-on movement effective hand surface in operative connection of the manual operating device stands and the knee joint facing away from the stop slide Direction is spring-loaded by a return spring. Because the switch tab, the toggle lever bracket and the ratchet lever in the on position of the Overcurrent protection switches are aligned on an over-center line and the pawl lever is supported on the release pawl by pressing the Tripping pawl by an overcurrent after the pair of knee levers has buckled quick shutdown can be achieved. By releasing the latch of the Stop slide can turn the knee joint of the pair of knee levers on Bend the position, causing the articulation of the toggle link on Jack lever is stretched and comes from the dead center position. Once this The pivot point has come out of the dead center position, the ratchet lever swings from the release pawl away and directs a quick, abrupt switch off of the Overcurrent protection switch on. Thanks to the bidirectionally effective ratchet lever can be achieved with the same components both with overcurrent tripping and A quick interruption of the contact points even when switching off manually. The manual control device takes over after triggering by overcurrent different position than after a manual switch off, because the ratchet lever at an overcurrent release the knee joint and also the one connected with it Do not let the manual control device bend as far as when switching it off manually.

Der Klinkenhebel ist vorteilhafterweise zweiarmig ausgebildet und weist eine den Klinkenhebel in seiner in der Ausschaltstellung des Ueberstromschutzschalters vorhandenen Ruhestellung von der Auslöseklinke beabstandet haltende Drehfeder auf. Bei der zweiarmigen Ausbildung des Klinkenhebels ist die Verwirklichung der Abstützung des Klinkenhebels in der Einschaltstellung des Ueberstromschutzschalters an der Auslöseklinke einfach. Die Drehfeder sorgt dafür, dass der Klinkenhebel in der entspannten Stellung, in der Ausschaltstellung des Ueberstromschutzschalters in der Bereitschaftsposition bleibt.The latch lever is advantageously designed with two arms and has one the latch lever in its off position of the overcurrent protection switch existing rest position from the release latch keeping spaced Torsion spring on. In the two-arm design of the ratchet lever is the Realization of the support of the ratchet lever in the on position of the Overcurrent protection switch on the release jack simple. The torsion spring ensures making sure that the latch lever is in the relaxed position, in the off position of the overcurrent protection switch remains in the standby position.

Die Auslöseklinke kann mit einer diese in der Ruhestellung in der den Klinkenhebel sperrenden Stellung haltenden Drehfeder ausgerüstet sein. Die in der entspannten Stellung liegende Auslöseklinke ist durch diese Drehfeder in der Bereitschaftsstellung gehalten.The release pawl can be used with one of these in the rest position in the pawl lever locking position holding torsion spring. The in the The release pawl is in the relaxed position thanks to this torsion spring Stand by position.

Die Handbetätigungsvorrichtung kann mit einer zwei gegenüberliegende Flächen aufweisenden, zweizinkigen, schwenkbaren Schaltgabel in Verbindung stehen, wobei eine der gegenüberliegenden inneren Flächen der Schaltgabel das Kniegelenk bei blockiertem Anschlagschieber bei einer Ausschaltbewegung von Hand aus der Totpunktlage mitnimmt, um das Kniehebelpaar durch Einknicken in die Ausschaltstellung zu bringen und die andere innere Fläche die bei einer Einschaltbewegung der Handbetätigungsvorrichtung auf das Kniegelenk wirkende Mitnehmerfläche bildet, die das Kniegelenk beim Einschalten in die Uebertotpunktlage drückt. Diese Anordnung ermöglicht das Ausschalten des Ueberstromschutzschalters auch dann, wenn der das Kniegelenk in der Einschaltstellung stützende Anschlagschieber aus irgendeinem Grunde blockiert bleibt.The manual control device can have two opposite surfaces having, two-pronged, pivoting shift fork in connection, one of the opposite inner surfaces of the shift fork the knee joint if the stop slide is blocked during a switch-off movement by hand takes from the dead center position to the pair of knee levers by buckling into the Bring the switch off position and the other inner surface when switching on the manual control device acting on the knee joint Driver surface that the knee joint in the dead center position when switched on suppressed. This arrangement enables the overcurrent protection switch to be switched off even when the knee joint is in the on position supporting stop slider remains blocked for some reason.

Im folgenden wird anhand der beiliegenden Zeichnungen ein Ausführungsbeispiel der Erfindung näher beschrieben. Es zeigen:

Fig.1
die Seitenansicht der wesentlichen Teile eines Ueberstromschutzschalters bei entfernter Gehäusewandung in der Ausschaltstellung und
Fig.2
die dabei eingenommene Stellung des zur Handbetätigung dienenden Drehknopfes,
Fig.3
eine Seitenansicht der wesentlichen Teile des Ueberstromschutzschalters bei entfernter Gehäusewandung in der Einschaltstellung und
Fig.4
die dabei eingenommene Stellung des Drehknopfes,
Fig.5, 6 und 7
die Schaltschlossanordnung, die Stellung des Drehknopfes und eine schematische Darstellung des Schaltschlosses in der Ausschaltstellung,
Fig.8 bis 13
die Schaltschlossanordnung, die Stellung des Drehknofes und eine schematische Darstellung des Schaltschlosses in zwei Zwischenstellungen während einer Einschaltbewegung,
Fig.14, 15 und 16
die Schaltschlossanordnung, die Stellung des Drehknopfes und eine schematische Darstellung des Schaltschlosses in der Einschaltstellung,
Fig.17 bis 28
die Schaltschlossanordnung, die Stellung des Drehknopfes und eine schematische Darstellung des Schaltschlosses in vier verschiedenen Zwischenstellungen während einer Ausschaltbewegung,
Fig.29, 30 und 31
die Schaltschlossanordnung, die Stellung des Drehknopfes und eine schematische Darstellung des Schaltschlosses in der durch die Ueberstromauslöseorgane ausgelösten Stellung bei festgehaltenem Drehknopf und
Fig.32, 33 und 34
bei freiem Drehknopf.
In the following an embodiment of the invention will be described with reference to the accompanying drawings. Show it:
Fig.1
the side view of the essential parts of an overcurrent protection switch with the housing wall removed in the off position and
Fig.2
the position of the rotary knob used for manual operation,
Figure 3
a side view of the essential parts of the overcurrent protection switch with the housing wall removed in the on position and
Figure 4
the position of the rotary knob,
Fig. 5, 6 and 7
the switch lock arrangement, the position of the rotary knob and a schematic representation of the switch lock in the off position,
Fig. 8 to 13
the switch lock arrangement, the position of the rotary knob and a schematic representation of the switch lock in two intermediate positions during a switch-on movement,
Fig. 14, 15 and 16
the switch lock arrangement, the position of the rotary knob and a schematic representation of the switch lock in the switch-on position,
Fig. 17 to 28
the switch lock arrangement, the position of the rotary knob and a schematic representation of the switch lock in four different intermediate positions during a switch-off movement,
Fig. 29, 30 and 31
the switch lock arrangement, the position of the rotary knob and a schematic representation of the switch lock in the position triggered by the overcurrent release elements with the rotary knob and
Fig. 32, 33 and 34
with free knob.

In Fig.1 ist die Seitenansicht eines Ueberstromschutzschalters bei entfernter Gehäusewandung dargestellt. Diese Figur zeigt aus Gründen der besseren Uebersichtlichkeit nur die für die Beschreibung der Erfindung notwendigen, wesentlichsten Teile des Ueberstromschutzschalters. Im Gehäuse 1 sind Festkontaktstücke 2 befestigt. Die in der Einschaltstellung des Ueberstromschutzschalters die Festkontaktstücke 2 phasenweise überbrückenden, beweglichen Kontaktstücke 3 sind in Fig.1 von den Festkontaktstücken 2 getrennt, der Schalter befindet sich in der Ausschaltstellung. Die beweglichen Kontaktstücke 3 werden durch mindestens eine nicht dargestellte, auf die Zapfen 4 wirkende Ausschaltfeder in die Ausschaltstellung gebracht und dort gehalten. Die Zapfen 4 befinden sich am einen Endbereich eines im Gehäuse 1 schwenkbar gelagerten Schalthebels 5. Das andere Ende des Schalthebels 5 drückt auf den Kontaktträger 6 der beweglichen Kontaktstücke 3 gegen die Kraft einer Einschaltfeder 7. Auf den die Zapfen 4 tragenden Endbereich des Schalthebels 5 wirkt ein Schaltschloss 8. Die Funktionsweise des Schaltschlosses 8 wird anhand der Figuren 5 bis 40 erläutert. Das Schaltschloss 8 wird entweder durch eine einen Drehknopf 9 enthaltende Handbetätigungsvorrichtung von Hand oder durch thermische und/oder dynamische Elemente enthaltende Ueberstromauslöseorgane betätigt. Der Drehknopf 9 und seine Position ist in der in Fig.2 gezeigten Draufsicht des ausgeschalteten Ueberstromschutzschalters besonders gut ersichtlich.In Figure 1 is the side view of an overcurrent protection switch when removed Housing wall shown. For the sake of clarity, this figure shows only the most essential for the description of the invention Parts of the overcurrent protection switch. In the housing 1 are fixed contact pieces 2 attached. The in the on position of the overcurrent protection switch the fixed contact pieces 2, bridging movable contact pieces in phases 3 are separated from the fixed contact pieces 2 in FIG. 1, the switch is in the off position. The movable contact pieces 3 are by at least one switch-off spring, not shown, acting on the pin 4 brought into the off position and held there. The pins 4 are located at one end region of a pivotally mounted in the housing 1 Shift lever 5. The other end of the shift lever 5 presses on the contact carrier 6 of the movable contact pieces 3 against the force of a closing spring 7. acts on the end portion of the shift lever 5 carrying the pin 4 Switch lock 8. The operation of the switch lock 8 is based on the Figures 5 to 40 explained. The key switch 8 is either by a Manual control device containing rotary knob 9 by hand or by Overcurrent release elements containing thermal and / or dynamic elements actuated. The knob 9 and its position is in that shown in Fig.2 Top view of the overcurrent protection switch that is switched off can be seen particularly well.

Fig.3 zeigt den gleichen Ueberstromschutzschalter im eingeschalteten Zustand. Durch das Schaltschloss 8 ist dabei der die Zapfen 4 tragende Endbereich des Schalthebels 5 gegen den Druck der nicht dargestellten Ausschaltfeder gedrückt gehalten. Das andere Ende des Schalthebels 5 lässt den Kontaktträger 6 der beweglichen Kontaktstücke 3 mit Hilfe der Einschaltfeder 7 in die Einschaltstellung gleiten. Die Stellung des Drehknopfes 9 bei eingeschaltetem Ueberstromschutzschalter geht aus der Fig.4 hervor.3 shows the same overcurrent protection switch in the switched-on state. Through the switching lock 8, the end region of the pin 4 is Shift lever 5 pressed against the pressure of the opening spring, not shown held. The other end of the shift lever 5 leaves the contact carrier 6 movable contact pieces 3 with the help of the switch spring 7 in the switch-on position slide. The position of the rotary knob 9 when the overcurrent protection switch is switched on can be seen from Fig.4.

Die Figuren 5, 6 und 7 zeigen Teile des Ueberstromschutzschalters in der Ausschaltstellung. In Fig.5 ist das Gehäuse 1, der Drehknopf 9 und das Schaltschloss 8 schematisch angedeutet. Fig.6 zeigt die Stellung des Drehknopfes 9 in der AUS-Stellung. Fig.7 ist eine übersichtlichere, schematische Darstellung der wichtigsten Teile des Schaltschlosses 8. Das Schaltschloss 8 ist in dieser Schaltstellung entspannt. Am die Zapfen 4 tragenden Endbereich des Schalthebels 5 ist eine Schaltlasche 10 mit der Gelenkachse 11 angelenkt. Die Schaltlasche 10 steht mit einer Kniehebellasche 12 in gelenkiger Verbindung, wobei diese beiden Laschen ein Kniehebelpaar mit dem zwischen ihnen liegenden Kniegelenk 13 bilden. Der dem Kniegelenk 13 abgekehrte Endbereich der Kniehebellasche 12 ist auf einem im Gehäuse 1 um die Schwenklagerachse 14 in beide Richtungen schwenkbaren Klinkenhebel 15 mit der Gelenkachse 16 gelagert. Mit den Ueberstromauslöseorganen steht eine im Gehäuse 1 schwenkbar gelagerte Auslöseklinke 17 in Verbindung. In der Ruhestellung begrenzt die Auslöseklinke 17 die Schwenkbewegung des Klinkenhebels 15 in Gegenuhrzeigersinn. Der zweiarmig ausgebildete Klinkenhebel 15 wird in der Ruhestellung durch eine Drehfeder 18 in einer von der Auslöseklinke 17 etwas beabstandeten Stellung gehalten. Die Auslöseklinke 17 bleibt dank der Drehfeder 19 in der Ruhestellung in einer den Klinkenhebel 15 in Gegenuhrzeigersinn sperrenden Position. Der Drehknopf 9 steht über ein nicht näher dargestelltes Kegelradgetriebe mit einem im Gehäuse 1 gelagerten, zweiarmigen Handbetätigungshebel 20 in formschlüssiger Verbindung. Der Handbetätigungshebel 20 weist am einen Arm eine Mitnehmerfläche 21 auf. Zur Stützung des Kniegelenkes 13 in der Totpunktlage bei eingeschaltetem Ueberstromschutzschalter (Fig.16) ist ein lösbar verklinkbarer Anschlagschieber 22 vorgesehen. Dieser Anschlagschieber 22 steht in der entklinkten Stellung durch eine Feder 23 belastet mit dem Kniegelenk 13 in einem kleinen Bereich um die Einschaltstellung in Stossverbindung. In der Einschaltstellung ist der Anschlagschieber 22 durch die Handbetätigungsvorrichtung in nicht näher gezeigter Weise verklinkt. Am Beginn einer Ausschaltbewegung wird die Verklinkung gelöst, wonach der Anschlagschieber 22 von der verklinkten Stellung aus in beiden Richtungen verschiebbar ist. Das Kniegelenk 13 steht in der dem Anschlagschieber 22 abgekehrten Richtung unter der Wirkung einer Rückstellfeder 24.Figures 5, 6 and 7 show parts of the overcurrent protection switch in the Off position. In Figure 5, the housing 1, the knob 9 and the key switch 8 indicated schematically. 6 shows the position of the rotary knob 9 in the exhibition. Fig. 7 is a clearer, schematic representation of the most important parts of the switch lock 8. The switch lock 8 is in this Switch position relaxed. At the end portion of the shift lever carrying the pins 4 5 is a switching tab 10 articulated with the hinge axis 11. The Switch tab 10 is articulated to a toggle lever tab 12, these two tabs a pair of toggle levers with the one between them Form knee joint 13. The end region facing away from the knee joint 13 Toggle lever bracket 12 is on a in the housing 1 about the pivot bearing axis 14 in Pawl lever 15 pivotable in both directions with the articulated axis 16. With the overcurrent release elements, one is pivotable in the housing 1 stored release pawl 17 in connection. In the rest position, the Release pawl 17 the pivoting movement of the pawl lever 15 in a counterclockwise direction. The two-armed ratchet lever 15 is in the rest position by a torsion spring 18 in a slightly spaced from the release pawl 17 Position held. The release pawl 17 remains thanks to the torsion spring 19 in the Lock the rest position in a counterclockwise direction Position. The rotary knob 9 is above a bevel gear, not shown with a two-armed manual control lever mounted in the housing 1 20 in a positive connection. The manual control lever 20 has one Arm on a driver surface 21. To support the knee joint 13 in the Dead center position when the overcurrent protection switch (Fig. 16) is on Detachably latchable stop slide 22 is provided. This stop slide 22 is in the unlatched position by a spring 23 loaded with the Knee joint 13 in a small area around the switch-on position in butt connection. In the switched-on position, the stop slide 22 is through the manual actuation device latched in a manner not shown. At the beginning of one Disengaging movement releases the latch, after which the stop slide 22nd is displaceable in both directions from the latched position. The Knee joint 13 is in the direction facing away from the stop slide 22 the action of a return spring 24.

Die Figuren 8 bis 13 zeigen den Ueberstromschutzschalter in zwei Zwischenstellungen während einer Einschaltbewegung. Der Drehknopf 9 wird von Hand in Uhrzeigersinn gedreht. In der ersten, in den Figuren 8 bis 10 dargestellten Zwischenstellung dreht sich der Handbetätigunshebel 20 in Gegenuhrzeigersinn bis die Mitnehmerfläche 21 mit dem Kniegelenk 13 in Eingriff kommt. Der Klinkenhebel 15 wird an der Auslöseklinke 17 abgestützt und somit in der weiteren Schwenkbewegung in Gegenuhrzeigersinn gehindert. Die Gelenkachse 16 auf dem Klinkenhebel 15 bleibt dabei in Bezug auf das Gehäuse 1 unbeweglich. Von diesem Moment an nimmt die Mitnehmerfläche 21 das Kniegelenk 13 in Gegenuhrzeigersinn mit. Beim Weiterdrehen des Drehknopfes 9 erreicht man den in den Figuren 11 bis 13 dargestellten Grenzzustand, bei welchem die Schaltlasche 10 und die Kniehebellasche 12 in einer Linie hintereinander ausgerichtet sind und der Ueberstromschutzschalter eingeschaltet wird. Das Kniegelenk 13 kommt dann mit dem Anschlagschieber 22 in Eingriff. Beim Weiterdrehen des Drehknopfes 9 springt das Kniegelenk 13 in die Uebertotpunktlage, wobei es sich am bereits verklinkten Anschlagschieber 22 abstützt. Somit ist die in den Figuren 14 bis 16 gezeigte Einschaltstellung des Ueberstromschutzschalters erreicht.Figures 8 to 13 show the overcurrent protection switch in two intermediate positions during a switch-on movement. The knob 9 is in by hand Turned clockwise. In the first, shown in Figures 8 to 10 In the intermediate position, the manual actuation lever 20 rotates counterclockwise until the driver surface 21 comes into engagement with the knee joint 13. The Pawl lever 15 is supported on the release pawl 17 and thus in the further pivoting movement counterclockwise prevented. The hinge axis 16 on the ratchet lever 15 remains immobile in relation to the housing 1. From this moment on, the driving surface 21 takes the knee joint 13 counterclockwise with. When turning the knob 9 further you will reach the limit state shown in Figures 11 to 13, in which the Switch plate 10 and the toggle lever plate 12 aligned in a line one behind the other and the overcurrent protection switch is switched on. The knee joint 13 then comes into engagement with the stop slide 22. When turning on of the rotary knob 9, the knee joint 13 jumps into the over-center position, whereby it is supported on the stop slide 22 which is already latched. So that is Switch-on position of the overcurrent protection switch shown in FIGS. 14 to 16 reached.

Die Figuren 17 bis 28 zeigen den Ueberstromschutzschalter in vier verschiedenen Zwischenstellungen während einer Ausschaltbewegung. Die Ausschaltbewegung beginnt damit, dass der Drehknopf 9 in Gegenuhrzeigersinn gedreht wird. Danach wird die insbesondere in Fig.19 gut erkennbare Entklinkung des Anschlagschiebers 22 durch die Handbetätigungsvorrichtung erfolgen. Der Anschlagschieber 22 wird auf Wirkung der Ausschaltfeder durch das Kniegelenk 13 in Fig.19 nach rechts verschoben. Sobald die Gelenkachse 16 zwischen der Kniehebellasche 12 und dem Klinkenhebel 15 aus der in Fig.19 dargestellten Totpunktlage herauskommt, knickt diese Anordnung wie in Fig.22 dargestellt ein, wobei die Kontakttrennung sprungartig erfolgt. Beim Weiterdrehen des Drehknopfes 9 (Fig.25) zieht die Rückstellfeder 24 das Kniegelenk 13 weiter und bewirkt, dass das Kniehebelpaar einknickt (Fig.28) und die Ausschaltstellung (Fig.7) erreicht wird.Figures 17 to 28 show the overcurrent protection switch in four different Intermediate positions during an opening movement. The switch-off movement begins with the rotary knob 9 being turned counterclockwise. Then the unlatching of the stop slide, which can be clearly seen in FIG. 19 in particular 22 done by the manual control device. The stop slide 22 is due to the action of the opening spring by the knee joint 13 in Fig. 19 shifted to the right. Once the hinge axis 16 between the toggle link 12 and the ratchet lever 15 from the dead center position shown in Fig. 19 comes out, this arrangement buckles as shown in Fig. 22, the Contact separation takes place suddenly. When turning the knob 9 (Fig.25) the return spring 24 pulls the knee joint 13 and causes the pair of knee levers buckles (Fig. 28) and reaches the switch-off position (Fig. 7) becomes.

Der zweiarmige Handbetätigungshebel 20 weist an seinem dem Kegelradgetriebe abgekehrten Arm eine zweizinkige Schaltgabel mit zwei gegenüberliegenden inneren Flächen auf. Die eine der Flächen ist die anhand der Figuren 8 bis 13 bereits beschriebene Mitnehmerfläche 21. Die gegenüberliegende Fläche 25 ist bei einer Ausschaltbewegung wirksam, wenn der Anschlagschieber 22 aus irgendeinem Grunde blockiert bleibt. In diesem Fall kann das Kniehebelpaar 10, 12 nicht einknicken und die Ausschaltbewegung kann nicht ausgeführt werden. In diesem Fall nimmt die Fläche 25 beim Weiterdrehen des Drehknopfes 9 das Kniegelenk 13 in die dem Anschlagschieber 22 abgekehrte Richtung mit. Nach Ueberschreiten der Totpunktlage knickt das Kniehebelpaar 10, 12 ein, wodurch eine schnelle Kontakttrennung eingeleitet wird.The two-armed manual control lever 20 has on its the bevel gear arm turned away a two-pronged shift fork with two opposite inner surfaces. One of the surfaces is that based on FIGS. 8 to 13 Driver surface 21 already described. The opposite surface 25 is effective in a switch-off movement when the stop slide 22 from any Remains basically blocked. In this case, the pair of toggle levers 10, 12 do not buckle and the switch-off movement cannot be carried out. In In this case, the surface 25 takes this when turning the knob 9 Knee joint 13 in the direction away from the stop slide 22. To If the dead center position is exceeded, the pair of toggle levers 10, 12 buckles, as a result of which a quick contact separation is initiated.

Die Figuren 29 bis 34 zeigen den Ueberstromschutzschalter nach einer Auslösung durch die Ueberstromauslöseorgane. In den Figuren 29 bis 31 ist der Zustand nach der Auslösung bei festgehaltenem und in den Figuren 32 bis 34 bei freiem Drehknopf 9. Beim Ansprechen der Ueberstromauslöseorgane dreht sich die Auslöseklinke 17 in Gegenuhrzeigersinn vom Klinkenhebel 15 weg. Beim eingeschalteten Ueberstromschutzschalter (Fig.14 bis 16) bedeutet es, dass die Abstützung der Klinkenhebel 15 in Gegenuhrzeigersinn aufgehoben wird. Unabhängig davon dass der Drehknopf 9 festgehalten ist oder nicht, schwenkt der Klinkenhebel 15 nach Wegschwenken der Auslöseklinke 17 in Gegenuhrzeigersinn. Dadurch wird die Gelenkachse 16 der Kniehebellasche 12 auf dem Klinkenhebel 15 und somit auch der Schalthebel 5 in die Höhe schnellen, wobei sich die festen und die beweglichen Kontaktstücke 2, 3 sprungartig trennen. Wenn der Drehknopf 9 festgehalten ist, verläuft die Kontakttrennung wie bei freiem Drehknopf 9, nur der festgehaltene Drehknopf bleibt in der Einschaltstellung. Sobald man den Drehknopf 9 freilässt, oder gar nicht festhält, schwenkt der Drehknopf 9 in die in Fig.33 gezeigte Stellung und ermöglicht die Feststellung einer Ueberstromauslösung von aussen.Figures 29 to 34 show the overcurrent protection switch after tripping through the overcurrent tripping devices. In Figures 29 to 31 is the State after triggering while held and in Figures 32 to 34 Free rotary knob 9. When the overcurrent release elements respond, it rotates the release pawl 17 in a counterclockwise direction away from the pawl lever 15. At the switched on overcurrent protection switch (Fig. 14 to 16) it means that the Support of the pawl lever 15 is lifted counterclockwise. Independently that the knob 9 is held or not, the pivots Pawl lever 15 after pivoting the release pawl 17 in a counterclockwise direction. As a result, the hinge axis 16 of the toggle lever plate 12 on the ratchet lever 15 and thus also the shift lever 5 soar, the fixed and the movable contact pieces 2, 3 suddenly disconnect. If the Knob 9 is held, the contact separation is the same as for free Knob 9, only the held knob remains in the on position. As soon as you release the rotary knob 9, or not hold it at all, it pivots Knob 9 in the position shown in Fig.33 and allows the determination an overcurrent release from the outside.

Der bei Handauslösung und bei Ueberstromauslösung unterschiedlich, bidirektional wirkende Klinkenhebel 15 kann auch zur Betätigung eines Signalschalters herangezogen werden, um die Auslösung des Ueberstromschutzschalters durch die Auslöseorgane anzuzeigen.Different for manual release and overcurrent release, bidirectional acting latch lever 15 can also be used to actuate a signal switch be used to trigger the overcurrent protection switch to display the trigger organs.

Claims (4)

  1. An over-current circuit breaker, especially a circuit breaker for a motor, including fixed contact members (2) which are accommodated in a housing (1) and which, for each phase in the on-position of the over-current circuit breaker, are bridged by moveable contact members (3) that are controllable by at least one open-circuiting spring, a switch lock (8) which is actuatable by either a manual actuating device or an over-current tripping mechanism and is effective on the moveable contact members (3) within the housing (1) via a pair of articulated levers in the form of a toggle link (12) and a switch link (10), wherein the end region of the toggle link (12) remote from the toggle joint (13) of the pair of articulated levers is pivotally mounted on a pawl lever (15) which itself is pivotally mounted in the housing (1) and, in the on-position, is supported on a tripping catch (17) that is actuatable by the over-current tripping mechanism, and wherein the manual actuating device is actively coupled to the toggle joint (13) of the pair of articulated levers, characterised in that, in the on-position of the over-current circuit breaker, the axes of articulation (11, 13, 16) of the switch link (10) and of the toggle link (12) and the pivotal bearing axis (14) of the pawl lever (15) are located one behind the other in a direction along a slightly curved line such that, in the top dead centre position, the switch link (10), the toggle link (12) and the pawl lever (15) are tensioned in an extended configuration by the open-circuiting spring wherein the pawl lever (15) is supported on the tripping catch (17) whilst the toggle joint (13) located between the switch link (10) and the toggle link (12) is supported on a releasable, latched sliding stop (22), and wherein the pawl lever (15) is constructed in such a manner that it is pivotal about the pivotal bearing axis (14) in both directions from the position adopted in the on-position of the over-current circuit breaker, from where it moves from the on-position into the off-position in the one direction after actuation of the tripping catch (17) and in the other direction after the release of the latching means of the sliding stop (22) by actuation of the manual actuating device, and in that the manual actuating device is actively coupled to the toggle joint (13) of the pair of articulated levers via at least one driver face (21) which is effective in the course of a switch-on movement of the manual actuating device, and the toggle joint (13) is spring loaded in the direction opposite to the sliding stop (22) by a restoring spring (24).
  2. An over-current circuit breaker in accordance with Claim 1, characterised in that the pawl lever (15) has two arms and comprises a torsion spring (18) which holds the pawl lever (15), in the inoperative position thereof occurring whilst the over-current circuit breaker is in its off-position, spaced from the tripping catch (17).
  3. An over-current circuit breaker in accordance with Claim 1 or 2, characterised in that the tripping catch (17) is equipped with a torsion spring (19) which, in the inoperative position, holds said tripping catch in the position blocking the pawl lever (15).
  4. An over-current circuit breaker in accordance with Claim 1, characterised in that the manual actuating device is connected to a two-pronged, pivotal switch fork comprising two opposite faces whereby one of the opposing inner faces (25) of the switch fork drives the toggle joint (13) from the dead centre position, when the sliding stop (22) is in the blocked state, by virtue of a manually initiated switch-off movement which is such as to move the pair of articulated levers into the off-position by means of a buckling process, and the other inner face, which forms a drive face (21) that is effective on the toggle joint (13) when the manual actuating device is operated such as to produce a switch-on movement, forces the toggle joint (13) into the upper dead centre position in the course of a switch-on action.
EP96120845A 1996-02-06 1996-12-23 Over current circuit breaker, particularly motor circuit breaker Expired - Lifetime EP0847070B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH30796 1996-02-06
CH307/96 1996-02-06
CH30796 1996-02-06

Publications (3)

Publication Number Publication Date
EP0847070A2 EP0847070A2 (en) 1998-06-10
EP0847070A3 EP0847070A3 (en) 1998-11-04
EP0847070B1 true EP0847070B1 (en) 2002-06-12

Family

ID=4184023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96120845A Expired - Lifetime EP0847070B1 (en) 1996-02-06 1996-12-23 Over current circuit breaker, particularly motor circuit breaker

Country Status (7)

Country Link
US (1) US5757602A (en)
EP (1) EP0847070B1 (en)
AT (1) ATE219286T1 (en)
DE (1) DE59609343D1 (en)
DK (1) DK0847070T3 (en)
ES (1) ES2176394T3 (en)
PT (1) PT847070E (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0892420B1 (en) * 1997-07-14 2005-04-27 Rockwell Automation AG Locking mechanism for an electrical excesscurrent switch for motor protection
FR2799573B1 (en) * 1999-10-11 2001-12-14 Schneider Electric Ind Sa CIRCUIT BREAKER CONTROL MECHANISM
US6307453B1 (en) 2000-02-15 2001-10-23 Eaton Corporation Circuit breaker with instantaneous trip provided by main conductor routed through magnetic circuit of electronic trip motor
US6225883B1 (en) 2000-02-15 2001-05-01 Eaton Corporation Circuit breaker with latch and toggle mechanism operating in perpendicular planes
US6688976B1 (en) * 2000-05-01 2004-02-10 Walker Digital, Llc Systems and methods wherein a lottery number combination is associated with a limited number of occurrences
CN105632802B (en) * 2016-03-30 2018-10-30 上海电科电器科技有限公司 The auxiliary body of operating mechanism

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2123765B1 (en) * 1971-05-13 1972-05-31 Ellenberger & Poensgen DR] CKKNOPFBET [TIGTER] CURRENT SWITCH
DE3212474C2 (en) * 1982-04-03 1986-02-06 Ellenberger & Poensgen Gmbh, 8503 Altdorf Overcurrent protection switch
CH681752A5 (en) * 1991-02-22 1993-05-14 Weber Ag
BE1004956A3 (en) * 1991-06-20 1993-03-02 Vynckier Nv Differential switch.
DE4304769C1 (en) * 1993-02-17 1994-03-31 Kloeckner Moeller Gmbh Actuator mechanism for motor power switching stage - has movable contact unit held in stable position and released by manual unit providing fast and independent switching action

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US5757602A (en) 1998-05-26
DK0847070T3 (en) 2002-07-15
EP0847070A3 (en) 1998-11-04
ES2176394T3 (en) 2002-12-01
EP0847070A2 (en) 1998-06-10
ATE219286T1 (en) 2002-06-15
PT847070E (en) 2002-11-29
DE59609343D1 (en) 2002-07-18

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