EP0003967B1 - Release gear device for electric power circuit breakers - Google Patents

Release gear device for electric power circuit breakers Download PDF

Info

Publication number
EP0003967B1
EP0003967B1 EP79100351A EP79100351A EP0003967B1 EP 0003967 B1 EP0003967 B1 EP 0003967B1 EP 79100351 A EP79100351 A EP 79100351A EP 79100351 A EP79100351 A EP 79100351A EP 0003967 B1 EP0003967 B1 EP 0003967B1
Authority
EP
European Patent Office
Prior art keywords
bearing
opening
narrow
peg
bearing opening
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
Application number
EP79100351A
Other languages
German (de)
French (fr)
Other versions
EP0003967A1 (en
Inventor
Werner Troebel
Klaus-Dieter Habedank
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0003967A1 publication Critical patent/EP0003967A1/en
Application granted granted Critical
Publication of EP0003967B1 publication Critical patent/EP0003967B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • 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

Definitions

  • the invention relates to a latching arrangement for electrical circuit breakers with a pawl and a locking flap cooperating therewith, which are rotatably or pivotably mounted by means of two bearing pins of rectangular cross-section lying on a common axis in bearing openings of stationary parts, each one of the narrow ones Surfaces of the bearing pin can be acted upon by the force to be latched and this narrow surface of each bearing pin faces a convex curved surface of the associated bearing opening and the two long surfaces of each bearing pin with play each have an equally convex surface of the bearing opening.
  • a latching arrangement of this type is present in the case of obviously previously used type Tp 10 motor protection switches from CMC Carl Maier j-Cie AG, Schaffhausen / Switzerland.
  • the invention has for its object to improve the properties of the known latching arrangement in such a way that a slight play is also achieved in the direction of the long surfaces of the rectangular cross-section of the bearing journal, because stress also occurs in this direction when the latching arrangement is reset. Furthermore, a slight play should be maintained even with a relatively large pivoting angle of the bearing journal.
  • this object is achieved in that the further narrow surface of each bearing journal is opposed by a concavely curved surface of the bearing opening.
  • the fact that in this arrangement the edges of the one narrow side of the bearing journal lie against the concave surface is of less importance for the durability of the arrangement, because the restoring forces acting in the direction of the concave surface are substantially less than those in the opposite direction from forces exerted by the pawl on the locking tab, which originate from the opening springs.
  • the counter surface of the bearing opening opposite the further narrow surface of each bearing journal can also be formed from two partial surfaces connected at an angle to one another and by a transition arch. In this way, a low-play storage of the locking tab can be achieved even with a relatively large swivel angle.
  • Figure 1 shows an electrical circuit breaker schematically in section.
  • FIG. 2 shows a bearing part for a locking tab that is to be fixed in the housing of the circuit breaker.
  • Figures 3 and 4 show an enlarged view of two differently designed bearing openings.
  • a locking tab is shown separately in FIG. 5; the front view of a bearing journal is shown in FIG. 6.
  • FIG. 7 is an enlarged illustration of a bearing opening with a bearing pin engaging in it in different switching positions.
  • the circuit breaker 1 shown in FIG. 1 has an insulating housing 2 made of a molded material, which is divided along a joint 3 into an upper part 4 and a lower part 5.
  • the current path of the circuit breaker 1 extends from a connection device 6 via a fixed contact piece 7 and a movable contact piece 10 and via a flexible conduction band 11 to a further connection device 12.
  • the fixed contact piece 7 and the movable contact piece 10 are in a quenching chamber 13 in a known manner arranged.
  • the connection of the bimetallic strip 15 and the magnet armature 16 to the trigger shaft 14 is not shown separately.
  • the trigger shaft 14 is connected to a locking tab 17, the projection 20 of which serves as an abutment for a pawl 21 of the switch lock of the circuit breaker 1.
  • the circuit breaker 1 has an operating handle 22 which projects through an opening in the upper part 4 of the housing 2.
  • the actuating handle 22 is connected to a drive lever 23 which actuates a toggle lever system 24 which engages the connecting joint 25 of the movable contact piece 10 with a contact piece carrier 26.
  • a switching shaft 27 transmits the movement of the contact piece carrier 26 to adjacent pole paths of the circuit breaker 1, not shown. From the switch-on position shown, the movable switch piece 10 can be moved into the switch-off position by moving the actuating handle 22 in the direction of arrow 28. The pawl 21 and the locking tab 17 remain in the position shown.
  • the locking tab 17 is pivoted clockwise and the pawl 21 is released.
  • the support 30 of the toggle lever system 24 is thereby canceled so that the contact piece carrier 25 and thus the movable contact piece 10 are also in the Be turned clockwise to the off position.
  • the actuating handle 22 assumes an intermediate position between the switch-on position shown and the switch-off position not shown, as a result of which it can be seen that the switch has been triggered (TRIP position).
  • FIG. 2 shows an example of a bearing part used to support the locking tab 17.
  • the bearing part 31 is a stamped part made of sheet metal, which is provided with a multiplicity of bearing openings and surfaces, as are required for storing the various movable parts of the thermal and magnetic releases.
  • the bearing part 31 is in a suitable manner with the lower part 5 of the housing 2 z. B. connected by screws.
  • An identical bearing part is also fastened in the lower part 5 in a parallel position, as a result of which two spaced-apart aligned bearing points are created for the parts to be stored.
  • a bearing opening for the locking tab 17 is designated 32.
  • a bearing surface 33 located above is provided for the trigger shaft 14.
  • the enlarged illustration of the bearing opening 32 in FIG. 3 shows that in the case of a generally elongated shape, two longer surfaces 34 and 35 provided with convex curvatures face each other and that one of the narrower surfaces 36 is also convexly curved.
  • the surface 37 opposite the surface 36 is concavely curved.
  • the convex curvature of the longer surfaces 34 and 35 is not uniformly distributed over the entire length, but such non-uniform that the narrowest point of the bearing opening at about 2/3 of the height of the bearing opening is the 32nd The transition between all the areas mentioned is rounded.
  • a bearing opening 40 there are again convexly shaped longer surfaces 41 and 42 and also a convexly curved, narrower surface 43.
  • the surface 44 opposite this is divided into two approximately straight partial surfaces 45 and 46, which are connected by a transition surface 47.
  • the partial surfaces 45 and 46 are at an acute angle to one another.
  • the position of the most curved areas 48 and 49 of the long surfaces 41 and 42 is also different from the example according to FIG. 3.
  • the bearing pins of the locking tab 17, as can be seen in FIG. 5, have a rectangular cross section.
  • the two journals 50 lie on an axis which represents the axis of rotation or pivoting of the locking tab.
  • FIG. 7 shows an enlarged view of a bearing opening corresponding to the bearing opening 40 (FIG. 4) and a bearing journal 50 engaging in the bearing opening, the individual surfaces of which are designated in FIG. 6.
  • the bearing 50 takes up the position shown in the open position of the circuit breaker 1.
  • the bearing journal lies with its upper narrow surface 51 on the convexly curved surface 43 and with its right long surface 53 on the right convexly curved surface 41 on.
  • a slight sliding movement occurs between the bearing journal and the surface 43.
  • the left long surface 54 lies against the convex surface 42.
  • the dash-dotted position of the bearing pin results when the operating handle 22 is reset to prepare for reclosure (RESET position).
  • the lower narrow surface 52 passes from the partial surface 45 to the partial surface 46, which is associated with sliding. The forces acting in the direction of these surfaces do not change the properties in the ON position.
  • the left long surface 54 of the journal 50 bears against the left convex surface 42 in the RESET position.

Landscapes

  • Breakers (AREA)

Description

Die Erfindung befaßt sich mit einer Verklinkungsanordnung für elektrische Leistungsschalter mit einer Klinke und einer mit dieser zusammenwirkenden Sperrlasche, die mittels zweier auf einer gemeinsamen Achse liegender Lagerzapfen von rechteckigem Querschnitt in Lageröffnungen ortsfester Teile dreh- bzw. schwenkbar gelagert sind, wobei jeweils die eine der schmalen Flächen der Lagerzapfen mit der zu verklinkenden Kraft beaufschlagbar ist und dieser schmalen Fläche jedes Lagerzapfens eine konvex gekrümmte Fläche der zugehörigen Lageröffnung und den beiden langen Flächen jedes Lagerzapfens mit Spiel je eine gleichfalls konvexe Fläche der Lageröffnung gegenübersteht.The invention relates to a latching arrangement for electrical circuit breakers with a pawl and a locking flap cooperating therewith, which are rotatably or pivotably mounted by means of two bearing pins of rectangular cross-section lying on a common axis in bearing openings of stationary parts, each one of the narrow ones Surfaces of the bearing pin can be acted upon by the force to be latched and this narrow surface of each bearing pin faces a convex curved surface of the associated bearing opening and the two long surfaces of each bearing pin with play each have an equally convex surface of the bearing opening.

Eine Verklinkungsanordnung dieser Art ist bei offenkundig vorbenutzten Motorschutzschaltern des Typs Tp 10 der Firma CMC Carl Maier j-Cie AG, Schaffhausen/Schweiz, vorhanden.A latching arrangement of this type is present in the case of obviously previously used type Tp 10 motor protection switches from CMC Carl Maier j-Cie AG, Schaffhausen / Switzerland.

Der Erfindung liegt die Aufgabe zugrunde, die Eigenschaften der bekannten Verklinkungsanordnung dahingehend zu verbessern, daß ein geringes Spiel auch in der Richtung der langen Flächen des rechteckigen Querschnitts des Lagerzapfens erreicht wird, weil auch in dieser Richtung bei der Rückstellung der Verklinkungsanordnung eine Beanspruchung auftritt. Ferner soll ein geringes Spiel auch bei einem relativ großen Schwenkwinkel des Lagerzapfens eingehalten werden.The invention has for its object to improve the properties of the known latching arrangement in such a way that a slight play is also achieved in the direction of the long surfaces of the rectangular cross-section of the bearing journal, because stress also occurs in this direction when the latching arrangement is reset. Furthermore, a slight play should be maintained even with a relatively large pivoting angle of the bearing journal.

Gemäß der Erfindung wird diese Aufgabe dadurch gelöst, daß der weiteren schmalen Fläche jedes Lagerzapfens eine konkav gekrümmte Fläche der Lageröffnung gegenübersteht. Der Umstand, daß bei dieser Anordnung die Kanten der einen Schmalseite des Lagerzapfens an der konkaven Fläche anliegen, ist für die Haltbarkeit der Anordnung von geringerer Bedeutung, weil die in der Richtung der konkaven Fläche wirkenden Rückstellkräfte wesentlich geringer sind als die in der entgegengesetzten Richtung von der Klinke auf die Sperrlasche ausgeübten Kräfte, die von den Auschaltfedern herrühren.According to the invention, this object is achieved in that the further narrow surface of each bearing journal is opposed by a concavely curved surface of the bearing opening. The fact that in this arrangement the edges of the one narrow side of the bearing journal lie against the concave surface is of less importance for the durability of the arrangement, because the restoring forces acting in the direction of the concave surface are substantially less than those in the opposite direction from forces exerted by the pawl on the locking tab, which originate from the opening springs.

Die der weiteren schmalen Fläche jedes Lagerzapfens gegenüberstehende Gegenfläche der Lageröffnung kann aber auch aus zwei winklig zueinander und durch einen Übergangsbogen verbundene Teilflächen gebildet sein. Auf diese Weise ist eine spielarme Lagerung der Sperrlasche auch bei einem verhältnismäßig großen Schwenkwinkel zu erreichen.However, the counter surface of the bearing opening opposite the further narrow surface of each bearing journal can also be formed from two partial surfaces connected at an angle to one another and by a transition arch. In this way, a low-play storage of the locking tab can be achieved even with a relatively large swivel angle.

In dem gleichen Sinne wirkt es sich aus, wenn nach einer weiteren Ausgestaltung der Erfindung die am stärksten gewölbten Bereiche der konvexen Flächen der Lageröffnung gegeneinander versetzt sind.In the same sense, it has an effect if, according to a further embodiment of the invention, the most curved areas of the convex surfaces of the bearing opening are offset from one another.

Die Erfindung wird im folgenden anhand der in den Figuren dargestellten Ausführungsbeispiele näher erläutert.The invention is explained in more detail below with reference to the exemplary embodiments shown in the figures.

Die Figur 1 zeigt einen elektrischen Leistungsschalter schematisch im Schnitt.Figure 1 shows an electrical circuit breaker schematically in section.

Die Figur 2 zeigt ein in dem Gehäuse des Leistungsschalters fest anzubringendes Lagerteil für eine Sperrlasche.FIG. 2 shows a bearing part for a locking tab that is to be fixed in the housing of the circuit breaker.

Die Figuren 3 und 4 zeigen in vergrößerter Darstellung zwei unterschiedlich ausgebildete Lageröffnungen.Figures 3 and 4 show an enlarged view of two differently designed bearing openings.

In der Figur 5 ist eine Sperrlasche gesondert gezeigt; die Stirnansicht eines Lagerzapfens ist in der Figur 6 dargestellt.A locking tab is shown separately in FIG. 5; the front view of a bearing journal is shown in FIG. 6.

Die Figur 7 ist eine vergrößerte Darstellung einer Lageröffnung mit einem in diese eingreifenden Lagerzapfen in verschiedenen Schaltstellungen.FIG. 7 is an enlarged illustration of a bearing opening with a bearing pin engaging in it in different switching positions.

Der in der Figur 1 gezeigte Leistungsschalter 1 besitzt ein aus einem Formpreßstoff hergestelltes isolierendes Gehäuse 2, das entlang einer Teilfuge 3 in ein Oberteil 4 und ein Unterteil 5 geteilt ist. Die Strombahn des Leistungsschalters 1 erstreckt sich von einer Anschlußvorrichtung 6 über ein feststehendes Schaltstück 7 und ein bewegliches Schaltstück 10 sowie über ein biegsames Leitungsband 11 zu einer weiteren Anschlußvorrichtung 12. Das feststehende Schaltstück 7 und das bewegliche Schaltstück 10 sind in bekannter Weise in einer Löschkammer 13 angeordnet. Zwischen dem Leitungsband 11 und der Anschlußvorrichtung 12 befinden sich ein thermischer und ein elektromagnetischer Auslöser, die gemeinsam auf eine Auslösewelle 14 wirken. Die Verbindung des Bimetallstreifens 15 und des Magnetankers 16 mit der Auslösewelle 14 ist nicht gesondert dargestellt.The circuit breaker 1 shown in FIG. 1 has an insulating housing 2 made of a molded material, which is divided along a joint 3 into an upper part 4 and a lower part 5. The current path of the circuit breaker 1 extends from a connection device 6 via a fixed contact piece 7 and a movable contact piece 10 and via a flexible conduction band 11 to a further connection device 12. The fixed contact piece 7 and the movable contact piece 10 are in a quenching chamber 13 in a known manner arranged. Between the conduction band 11 and the connection device 12 there are a thermal and an electromagnetic release, which act together on a release shaft 14. The connection of the bimetallic strip 15 and the magnet armature 16 to the trigger shaft 14 is not shown separately.

Die Auslösewelle 14 steht mit einer Sperrlasche 17 in Verbindung, deren Vorsprung 20 als Widerlager einer Klinke 21 des Schaltschlosses des Leistungsschalters 1 dient.The trigger shaft 14 is connected to a locking tab 17, the projection 20 of which serves as an abutment for a pawl 21 of the switch lock of the circuit breaker 1.

Für die Betätigung von Hand besitzt der Leistungsschalter 1 einen Betätigungshandgriff 22, der durch eine Öffnung des Oberteiles 4 des Gehäuses 2 hindurchragt. Im Innern des Gehäuses 2 ist der Betätigungshandgriff 22 mit einem Antriebshebel 23 verbunden, der ein Kniehebelsystem 24 betätigt, das an dem Verbindungsgelenk 25 des beweglichen Schaltstückes 10 mit einem Schaltstückträger 26 angreift. Eine Schaltwelle 27 überträgt die Bewegung des Schaltstückträgers 26 auf benachbarte, nicht dargestellte Polbahnen des Leistungsschalters 1. Aus der dargestellten Einschaltstellung kann das bewegliche Schaltstück 10 durch eine Bewegung des Betätigungshandgriffes 22 in Richtung des Pfeiles 28 in die Ausschaltstellung überführt werden. Die Klinke 21 und die Sperrlasche 17 verbleiben dabei in der dargestellten Stellung. Sprechen dagegen der thermische oder der magnetische Auslöser an, so wird die Sperrlasche 17 im Uhrzeigersinn geschwenkt, und die Klinke 21 wird freigegeben. Die Abstützung 30 des Kniehebelsystems 24 wird dadurch aufgehoben, so daß der Schaltstückträger 25 und damit das bewegliche Schaltstück 10 gleichfalls im Uhrzeigersinn in die Ausschaltstellung geschwenkt werden. Der Betätigungshandgriff 22 nimmt als Folge dieses Vorganges eine zwischen der dargestellten Einschaltstellung und der nicht dargestellten Ausschaltstellung liegende Zwischenstellung ein, wodurch erkennbar ist, daß der Schalter ausgelöst wurde (TRIP-Stellung).For manual operation, the circuit breaker 1 has an operating handle 22 which projects through an opening in the upper part 4 of the housing 2. In the interior of the housing 2, the actuating handle 22 is connected to a drive lever 23 which actuates a toggle lever system 24 which engages the connecting joint 25 of the movable contact piece 10 with a contact piece carrier 26. A switching shaft 27 transmits the movement of the contact piece carrier 26 to adjacent pole paths of the circuit breaker 1, not shown. From the switch-on position shown, the movable switch piece 10 can be moved into the switch-off position by moving the actuating handle 22 in the direction of arrow 28. The pawl 21 and the locking tab 17 remain in the position shown. On the other hand, if the thermal or magnetic release responds, the locking tab 17 is pivoted clockwise and the pawl 21 is released. The support 30 of the toggle lever system 24 is thereby canceled so that the contact piece carrier 25 and thus the movable contact piece 10 are also in the Be turned clockwise to the off position. As a result of this process, the actuating handle 22 assumes an intermediate position between the switch-on position shown and the switch-off position not shown, as a result of which it can be seen that the switch has been triggered (TRIP position).

In der Figur 2 ist ein Beispiel für ein zur Lagerung der Sperrlasche 17 dienendes Lagerteil gezeigt. Das Lagerteil 31 ist ein aus Blech hergestelltes Stanzteil, das mit einer Vielzahl von Lageröffnungen und Flächen versehen ist, wie sie zur Lagerung der verschiedenen bewegbaren Teile des thermischen und des magnetischen Auslösers benötigt werden. Das Lagerteil 31 wird in geeigneter Weise mit dem Unterteil 5 des Gehäuses 2 z. B. durch Schrauben verbunden. Ein gleiches Lagerteil wird in paralleler Stellung gleichfalls in dem Unterteil 5 befestigt, wodurch für die zu lagernden Teile zwei im Abstand angeordnete fluchtende Lagerstellen geschaffen werden. Eine Lageröffnung für die Sperrlasche 17 ist mit 32 bezeichnet. Eine darüber befindliche Lagerfläche 33 ist für die Auslösewelle 14 vorgesehen.FIG. 2 shows an example of a bearing part used to support the locking tab 17. The bearing part 31 is a stamped part made of sheet metal, which is provided with a multiplicity of bearing openings and surfaces, as are required for storing the various movable parts of the thermal and magnetic releases. The bearing part 31 is in a suitable manner with the lower part 5 of the housing 2 z. B. connected by screws. An identical bearing part is also fastened in the lower part 5 in a parallel position, as a result of which two spaced-apart aligned bearing points are created for the parts to be stored. A bearing opening for the locking tab 17 is designated 32. A bearing surface 33 located above is provided for the trigger shaft 14.

Der vergrößerten Darstellung der Lageröffnung 32 in der Figur 3 ist zu entnehmen, daß bei einer allgemein länglichen Gestalt zwei mit konvexen Wölbungen versehene längere Flächen 34 und 35 einander gegenüberstehen und daß die eine der schmaleren Flächen 36 ebenfalls konvex gewölbt ist. Die der Fläche 36 gegenüberstehende Fläche 37 ist konkav gewölbt. Die konvexe Krümmung der längeren Flächen 34 und 35 ist nicht gleichmäßig über die gesamte Länge verteilt, sondern derart ungleichförmig, daß die engste Stelle der Lageröffnung etwa bei 2/3 der Höhe der Lageröffnung 32 liegt. Der Übergang zwischen allen genannten Flächen ist abgerundet ausgeführt.The enlarged illustration of the bearing opening 32 in FIG. 3 shows that in the case of a generally elongated shape, two longer surfaces 34 and 35 provided with convex curvatures face each other and that one of the narrower surfaces 36 is also convexly curved. The surface 37 opposite the surface 36 is concavely curved. The convex curvature of the longer surfaces 34 and 35 is not uniformly distributed over the entire length, but such non-uniform that the narrowest point of the bearing opening at about 2/3 of the height of the bearing opening is the 32nd The transition between all the areas mentioned is rounded.

Bei dem weiteren Ausführungsbeispiel einer Lageröffnung 40 gemäß der Figur 4 sind wiederum konvex geformte längere Flächen 41 und 42 sowie eine gleichfalls konvex gewölbte schmalere Fläche 43 vorhanden. Die dieser gegenüberstehende Fläche 44 gliedert sich in zwei etwa gerade Teilflächen 45 und 46, die durch eine Übergangsfläche 47 verbunden sind. Die Teilflächen 45 und 46 stehen unter einem spitzen Winkel zueinander. Unterschiedlich gegenüber dem Beispiel gemäß der Figur 3 ist ferner die Lage der am stärksten gekrümmten Bereiche 48 und 49 der langen Flächen 41 und 42. Diese Bereiche stehen einander nicht gegenüber, sondern sind etwa in der Weise versetzt, daß sich der am stärksten gekrümmte Bereich 48 der Fläche 41 etwa in der halben Höhe der Lageröffnung 40 befindet, während der am stärksten gekrümmte Bereich 49 der Fläche 42 bei etwa 2/3 bis 3/4 der Höhe der Lageröffnung 40 angeordnet ist. Diese Unsymmetrie ist auf die vorgesehenen Winkelstellungen des in die Lageröffnung eingreifenden Lagerzapfens des Sperrgliedes abgestimmt, wie noch erläutert wird.In the further exemplary embodiment of a bearing opening 40 according to FIG. 4, there are again convexly shaped longer surfaces 41 and 42 and also a convexly curved, narrower surface 43. The surface 44 opposite this is divided into two approximately straight partial surfaces 45 and 46, which are connected by a transition surface 47. The partial surfaces 45 and 46 are at an acute angle to one another. The position of the most curved areas 48 and 49 of the long surfaces 41 and 42 is also different from the example according to FIG. 3. These areas are not opposed to one another, but are offset approximately in such a way that the most curved area 48 the surface 41 is approximately at half the height of the bearing opening 40, during which the surface is disposed at about 2 / 3W to 3/4 of the height of the bearing opening 40 42 most curved portion 49th This asymmetry is matched to the intended angular positions of the bearing pin of the locking member engaging in the bearing opening, as will be explained.

Die Lagerzapfen der Sperrlasche 17 besitzen, wie die Figur 5 erkennen läßt, einen rechteckigen Querschnitt. Die beiden Lagerzapfen 50 liegen auf einer Achse, welche die Dreh- bzw. Schwenkachse der Sperrlasche darstellt.The bearing pins of the locking tab 17, as can be seen in FIG. 5, have a rectangular cross section. The two journals 50 lie on an axis which represents the axis of rotation or pivoting of the locking tab.

In der Figur 7 ist eine Lageröffnung entsprechend der Lageröffnung 40 (Fig. 4) und ein in die Lageröffnung eingreifender Lagerzapfen 50 vergrößert dargestellt, dessen einzelne Flächen in der Figur 6 bezeichnet sind. Die ausgezogen dargestellte Stellung nimmt der Lagerzapfen 50 in der Einschaltstellung des Leistungsschalters 1 ein. Unter dem Einfluß der von der Klinke 21 (Fig. 1) auf den Fortsatz 20 der Sperrklinke 17 ausgeübten Kraft liegt der Lagerzapfen mit seiner oberen schmalen Fläche 51 an der konvex gewölbten Fläche 43 sowie mit seiner rechten langen Fläche 53 an der rechten konvex gewölbten Fläche 41 an. Beim Übergang in die gestrichelt dargestellte Ausschaltstellung tritt zwischen dem Lagerzapfen und der Fläche 43 eine geringe Gleitbewegung auf. Die linke lange Fläche 54 legt sich gegen die konvexe Fläche 42.FIG. 7 shows an enlarged view of a bearing opening corresponding to the bearing opening 40 (FIG. 4) and a bearing journal 50 engaging in the bearing opening, the individual surfaces of which are designated in FIG. 6. The bearing 50 takes up the position shown in the open position of the circuit breaker 1. Under the influence of the force exerted by the pawl 21 (FIG. 1) on the extension 20 of the pawl 17, the bearing journal lies with its upper narrow surface 51 on the convexly curved surface 43 and with its right long surface 53 on the right convexly curved surface 41 on. During the transition to the switch-off position shown in dashed lines, a slight sliding movement occurs between the bearing journal and the surface 43. The left long surface 54 lies against the convex surface 42.

Bei einer Auslösung ergibt sich die gepunktet dargestellte Stellung des Lagerzapfens 50. Hierbei tritt zunächst ein Gleiten an der Fläche 43 und ein Wälzen an der Fläche 41 auf. Anschließend legt sich unter weiterem Gleiten an der Fläche 43 der Lagerzapfen 50 an die gegenüberliegende Fläche 42.When triggered, the dotted position of the bearing pin 50 results. Here, sliding on the surface 43 and rolling on the surface 41 first occur. Subsequently, with further sliding on the surface 43, the bearing journal 50 lies against the opposite surface 42.

Die strichpunktiert eingezeichnete Stellung des Lagerzapfens ergibt sich bei der Zurückstellung des Betätigungshandgriffes 22 zur Vorbereitung der Wiedereinschaltung (RESET-Stellung). Die untere schmale Fläche 52 gelangt von der Teilfläche 45 zu der Teilfläche 46, was mit einem Gleiten verbunden ist. Die in Richtung dieser Flächen wirkenden Kräfte verändern nicht die Eigenschaften in der EIN-Stellung. Die linke lange Fläche 54 des Lagerzapfens 50 liegt in der RESET-Stellung an der linken konvex gewölbten Fläche 42 an.The dash-dotted position of the bearing pin results when the operating handle 22 is reset to prepare for reclosure (RESET position). The lower narrow surface 52 passes from the partial surface 45 to the partial surface 46, which is associated with sliding. The forces acting in the direction of these surfaces do not change the properties in the ON position. The left long surface 54 of the journal 50 bears against the left convex surface 42 in the RESET position.

Wie die Figur 7 erkennen läßt, tritt eine Berührung zwischen den Wandungen der Lageröffnung und dem Lagerzapfen nur in bestimmten Bereichen auf. Es ist daher nicht erforderlich, die gesamte Fläche der Lageröffnung mit der gleichen hohen Güte herzustellen, wie sie für die Berührungsflächen erwünscht ist. Es genügt vielmehr, wenn die obere konvexe Fläche 43 sowie die seitlichen am stärksten gewölbten Bereiche 48 und 49 der kovexen Flächen 41 und 42 sowie die untere Fläche 44 eine für Wälz- und Gleitvorgänge angepaßte geringe Rauhtiefe aufweisen. Die oberhalb und unterhalb der am stärksten gewölbten Bereiche der konvexen Flächen 47 und 48 sowie alle Ecken können dagegen eine größere Rauhtiefe besitzen. Im übrigen kann die Lagerung nach der Montage mit einem geeigneten Dauerschmiermittel versehen sein. Bei der Betrachtung der Figuren ist zu beachten, daß für die Figur 1 gegenüber den Figuren 2 bis 7 eine seitenverkehrte Darstellung gewählt ist.As can be seen in FIG. 7, contact between the walls of the bearing opening and the journal only occurs in certain areas. It is therefore not necessary to produce the entire surface of the bearing opening with the same high quality as is desired for the contact surfaces. Rather, it is sufficient if the upper convex surface 43 and the lateral most curved areas 48 and 49 of the covex surfaces 41 and 42 and the lower surface 44 have a low roughness depth which is adapted for rolling and sliding operations. The above and below the most curved areas of the convex surfaces 47 and 48 and all corners, however, can have a greater roughness. Moreover, the bearing can be provided with a suitable permanent lubricant after assembly. When examining the figures, it should be noted that a reversed representation has been chosen for FIG. 1 compared to FIGS. 2 to 7.

Claims (3)

1. A latching arrangement for electrical power switches (1) with a latch (21) and a cooperating locking clip (17) which can be rotated or pivoted in bearing openings (32) in stationary components (31) by means of two bearing pegs (50) of rectangular crosssection arranged on a common axis, wherein one of the narrow surfaces (51) of the bearing pegs (50) can be subjected to the force which is to be latched and this narrow surface (51) of each bearing peg (50) is arranged opposite a convexly curved surface (43) of the associated bearing openings (32), whereas the two long surfaces (53, 54) of each bearing peg (50) are arranged, with play, opposite a similarly convex surface (34, 35) of the bearing opening (32), characterised in that a concavely curved surface (37) of the bearing opening (32) is arranged opposite the further narrow surface (52) of each bearing peg (50).
2. A latching arrangement as claimed in claim 1, characterised in that the surface (44) of the bearing opening (40) which is arranged opposite the other narrow surface (52) of each bearing peg (50) possesses two sub-surfaces (45, 46) which are connected at an angle to one another by means of a connecting elbow (47).
3. A latching arrangement as claimed in claim 1, characterised in that the most curved regions (48, 49) of the convex surfaces (41, 42) of the bearing opening (40) are offset relative to one another.
EP79100351A 1978-03-07 1979-02-07 Release gear device for electric power circuit breakers Expired EP0003967B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2810233A DE2810233C2 (en) 1978-03-07 1978-03-07 Latch arrangement for electrical circuit breakers
DE2810233 1978-03-07

Publications (2)

Publication Number Publication Date
EP0003967A1 EP0003967A1 (en) 1979-09-19
EP0003967B1 true EP0003967B1 (en) 1981-04-29

Family

ID=6033989

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79100351A Expired EP0003967B1 (en) 1978-03-07 1979-02-07 Release gear device for electric power circuit breakers

Country Status (4)

Country Link
US (1) US4274069A (en)
EP (1) EP0003967B1 (en)
JP (1) JPS54125477A (en)
DE (1) DE2810233C2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3008533A1 (en) * 1980-03-06 1981-09-17 Brown, Boveri & Cie Ag, 6800 Mannheim SWITCHGEAR FOR ELECTRICAL INSTALLATION SWITCHGEAR
FR2553929B1 (en) * 1983-10-21 1986-08-01 Merlin Gerin CONTROL MECHANISM OF A LOW VOLTAGE MULTIPOLAR CIRCUIT BREAKER
EP0188482B1 (en) * 1984-07-14 1989-03-15 Licentia Patent-Verwaltungs-GmbH Switch latch
EP3988153B1 (en) 2015-03-31 2024-04-24 Fisher & Paykel Healthcare Limited A user interface for supplying gases to an airway
CN109803707B (en) 2016-08-11 2022-03-22 费雪派克医疗保健有限公司 Collapsible catheter, patient interface and headgear connector
JP6960172B2 (en) * 2019-03-20 2021-11-05 テンパール工業株式会社 Circuit breaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3178535A (en) * 1957-04-12 1965-04-13 Westinghouse Electric Corp Automatic circuit breaker with improved bimetallic and electromagnetic trip device
FR1217357A (en) * 1958-01-02 1960-05-03 Thomson Houston Comp Francaise Improvements to manual or automatic circuit breakers
US3796980A (en) * 1972-07-31 1974-03-12 Westinghouse Electric Corp Disposable circuit breaker

Also Published As

Publication number Publication date
EP0003967A1 (en) 1979-09-19
US4274069A (en) 1981-06-16
DE2810233C2 (en) 1979-10-18
JPS54125477A (en) 1979-09-28
DE2810233B1 (en) 1979-03-08

Similar Documents

Publication Publication Date Title
EP0174904B1 (en) Contact device for a low voltage circuit breaker with a two-armed contact lever
EP0660965A1 (en) Push-button actuated safety switch.
DE829759C (en) Electric tumbler switch
EP0795187B1 (en) Lock mechanisme for a low voltage switch
EP0222181A1 (en) Overcurrent circuit breaker
EP0003967B1 (en) Release gear device for electric power circuit breakers
DE3035781A1 (en) ELECTRIC SNAP SWITCH
DE2162079A1 (en) Key operated electrical switch
EP0002686A1 (en) Low voltage multi-pole power circuit breaker with switch shaft supporting contact arms
DE4319615C2 (en) Electrical switch for switching an electric motor, especially in an electric toothbrush
EP0388823B1 (en) Locking device against simultaneous switching-on of two mecanically or electromecanically operated switchgears
DE7416203U (en) Electric switch
DE4326312A1 (en) Toggle switch with stop for noise reduction
DE9004431U1 (en) Locking device for electromagnetic switching devices
DE2314332A1 (en) SNAP SWITCH
DE2810987C3 (en) Low voltage circuit breaker with an electromagnetic release
WO2000024022A1 (en) Coupling device
DE102011018647B4 (en) Electrical installation switching device
DE2413897B2 (en) ELECTRIC INSTALLATION SWITCH
EP0828271A1 (en) Electrical vaporizer for active substances
EP0720192B1 (en) Device for accelerated closure of electrical contacts
DE1908434B1 (en) Electric switch
DE4302185C1 (en) Two-pole electric switch - with dead-time coupling path for switch cams between sliding operating element and each switch wiper
DE2511510A1 (en) Rocker or push-button switch with pivoting switching element - has rocker atc. supported by cover plate with central aperture
DE1271807B (en) Electric 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

AK Designated contracting states

Designated state(s): BE CH FR GB IT LU NL SE

17P Request for examination filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH FR GB IT LU NL SE

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

Ref country code: SE

Payment date: 19820131

Year of fee payment: 4

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

Ref country code: LU

Payment date: 19820224

Year of fee payment: 4

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 NON-PAYMENT OF DUE FEES

Effective date: 19820228

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

Ref country code: NL

Payment date: 19820228

Year of fee payment: 4

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

Ref country code: BE

Payment date: 19820331

Year of fee payment: 4

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

Ref country code: BE

Effective date: 19830207

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

Ref country code: SE

Effective date: 19830208

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

Ref country code: CH

Effective date: 19830228

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

Ref country code: NL

Effective date: 19830901

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: GB

Effective date: 19881117

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930219

Year of fee payment: 15

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

Ref country code: FR

Effective date: 19941031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 79100351.0

Effective date: 19850610

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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