DE3802184C2 - - Google Patents
Info
- Publication number
- DE3802184C2 DE3802184C2 DE3802184A DE3802184A DE3802184C2 DE 3802184 C2 DE3802184 C2 DE 3802184C2 DE 3802184 A DE3802184 A DE 3802184A DE 3802184 A DE3802184 A DE 3802184A DE 3802184 C2 DE3802184 C2 DE 3802184C2
- Authority
- DE
- Germany
- Prior art keywords
- lever
- switch
- locking
- low
- knee joint
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
Description
Die Erfindung betrifft Niederspannungsschalter mit Sperrhebel, die als Trenn- oder als Schutzschalter ausgeführt sein können und bei denen der Sperrhebel die Überführung des Betätigungs handgriffes in die Ausschaltstellung verhindert, wenn die Kon takte des Schalters blockiert sind, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to low-voltage switches with a locking lever, which can be designed as disconnectors or circuit breakers and where the locking lever is the transfer of actuation handle in the off position prevented when the Kon clocks of the switch are blocked, according to the preamble of Claim 1.
Durch die DE 30 33 213 C2 ist ein Niederspannungsschutzschalter bekanntgeworden, der mit einem Sperrhebel zum Aufbrechen von blockierten Kontakten ausgerüstet ist. Dieser Sperrhebel ist drehbar auf der Schaltwelle gelagert. Der Sperrhebel übergreift gabelartig eine Arbeitsfläche am Antriebshebel der Betätigungs vorrichtung und das Gelenk des Kniegelenkhebels, wobei die Gabel ein geeignetes Spiel zu den vorgenannten Anschlagpunkten aufweist. Wird bei blockiertem beweglichen Schaltstück der Ver such unternommen, den Schutzschalter auszuschalten, so wird zu nächst über die Arbeitsfläche des Antriebshebels der Sperrhebel mit seinem Gabelarm mitgenommen, bis sich der andere Gabelarm gegen den Kniegelenkbolzen legt. Durch einen gewissen Kraft aufwand an dem Betätigungshandgriff lassen sich dann die Knie hebel im Ausschaltsinn durchknicken. Eine weitere Bewegung des Antriebshebels ist jedoch dann nicht möglich. Bei der Gestal tung des Gabelarmes des Sperrhebels muß dafür gesorgt werden, daß alle betriebsmäßigen Bewegungsabläufe innerhalb des Schutz schalters nicht behindert werden oder eine störende Abnutzung verhindert wird. Bei Schaltern mit formgepreßten Schaltwellen ist eine Verwendung dieses Sperrhebels problematisch. Da ver schiedene Schalterbaureihen einen unterschiedlichen Abstand zwischen Schaltwelle und Kniegelenk aufweisen, ist außerdem für jede Baureihe ein abgestimmter Sperrhebel erforderlich.DE 30 33 213 C2 is a low-voltage circuit breaker has become known who with a locking lever for breaking open blocked contacts. This locking lever is rotatably mounted on the selector shaft. The locking lever overlaps fork-like a work surface on the drive lever of the actuation device and the joint of the knee joint lever, the Fork a suitable game to the aforementioned attachment points having. Is the Ver If you try to turn off the circuit breaker, then will next over the working surface of the drive lever the locking lever carried with his fork arm until the other fork arm against the knee joint pin. By some force the knees can then be put into the operating handle Bend the lever in the switch-off direction. Another movement of the Drive lever is then not possible. At the Gestal tion of the fork arm of the locking lever must be ensured that all operational movements within the protection switch or obstructing wear and tear is prevented. For switches with molded control shafts using this locking lever is problematic. Since ver different switch series a different distance between the control shaft and knee joint is also A coordinated locking lever is required for each series.
In der DE 30 33 212 C2 ist ein elektrisches Schaltgerät gezeigt, das als Notausschalter wirkt. Die Wirkungsweise als Notausschal ter erhält das Schaltgerät dadurch, daß der Antriebshebel und der an dem Widerlager angelenkte Kniehebel im Ausschaltsinn zusammenwirkende Arbeitsflächen besitzen, die auf ein fehler haft in der Einschaltstellung verharrendes Schaltstück eine im Sinne der Trennung wirkende Kraftkomponente ausüben. Eine Ein wirkung eines Sperrhebels zur Kopplung von Antriebshebel und Kontaktarm liegt bei diesem Schaltgerät nicht vor.An electrical switching device is shown in DE 30 33 212 C2, that acts as an emergency stop. The mode of operation as an emergency stop ter receives the switching device in that the drive lever and the toggle lever articulated to the abutment in the opening direction have interacting work surfaces that indicate an error the contact piece remains in the on position Exercise the force component acting in the sense of separation. An on effect of a locking lever for coupling the drive lever and There is no contact arm in this switching device.
Das GM 80 23 509 zeigt einen Niederspannungsschutzschalter mit Sperrhebel gegen die Überführung des Betätigungshandgriffes in die Ausschaltstellung bei Blockierung des bewegbaren Schalt stückes in der Einschaltstellung. Der Sperrhebel ist in einer in dem Gehäuseboden eingeformten Lagerstelle gelagert und steht mit seinem der Lagerstelle gegenüberliegenden Ende mit dem Be tätigungshandgriff in Verbindung. In dem mittleren Bereich des Sperrhebels ist durch eine Ausbuchtung eine Arbeitsfläche ge bildet, die im Einschaltzustand dem Kniegelenkbolzen der Knie hebel mit geringem Abstand gegenüber steht. Ferner weist der Sperrhebel einen Fortsatz mit einer Abwicklung auf, die als Arbeitsfläche mit einer Gegenfläche des beweglichen Schalt stückes zusammen wirkt. Verharrt das bewegliche Schaltstück beim Ausschalten durch den Betätigungsgriff in der Einschalt stellung, so gelangt die Abwicklung des Sperrhebels zur Anlage an den Schaltstückträger und blockiert die weitere Schwenkung des Antriebshebels. Durch Druck auf den Betätigungsgriff läßt sich durch Hebelwirkung um das Lager am Gehäuseboden eine Kraftwirkung auf den Träger ausüben, die in manchen Fällen zur Trennung der miteinander verschweißten Kontaktstellen aus reicht. Die Wirkung des Sperrhebels ist bei dieser Vorrichtung mit durch die Lage der Schaltwelle im Schaltergehäuse bestimmt.The GM 80 23 509 shows a low-voltage circuit breaker Locking lever against the transfer of the operating handle in the off position when the movable switch is blocked piece in the on position. The locking lever is in one stored and formed in the housing base molded bearing with its end opposite the bearing with the Be operation handle in connection. In the middle area of the Locking lever is a work surface through a bulge forms the knee joint pin of the knees when switched on lever is opposite with a small distance. Furthermore, the Locking lever on an extension with a settlement that as Work surface with a counter surface of the movable switch piece works together. The moving contact piece remains when switching off by the operating handle in the switch-on position, the processing of the locking lever comes to the system to the contact piece carrier and blocks further pivoting of the drive lever. By pressing the operating handle a leverage around the bearing on the housing base Apply force to the wearer, which in some cases to separate the welded contact points enough. The effect of the locking lever is with this device determined by the position of the control shaft in the switch housing.
Der Erfindung liegt die Aufgabe zugrunde in einem kompakten Schaltschloß unabhängig von der Lage und Ausführungsform der Schaltwelle einen einfachen, raumsparenden und zugleich direkt wirkenden Sperrmechanismus zu schaffen.The invention has for its object in a compact Switch lock regardless of the location and design of the Shift shaft a simple, space-saving and at the same time to create a direct-acting locking mechanism.
Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 an gegebenen Merkmale gelöst. Weiterbildungen sind in den Unter ansprüchen gegeben.This object is achieved in the characterizing part of claim 1 given characteristics solved. Further training is in the sub given claims.
Die Erfindung hat den Vorteil, daß die Anordnung der Sperr lasche hinter der oberen Kniegelenklasche keinen zusätzlichen Platz im Schaltergehäuse benötigt und betriebsmäßige Bewegungs abläufe innerhalb des Schaltschlosses nicht behindert werden. Über die Gestaltung der Führungskulisse im Antriebshebel kann in vorteilhafter Weise die Funktion der Sperrlasche optimiert werden.The invention has the advantage that the arrangement of the lock no additional tab behind the upper knee joint tab Space required in the switch housing and operational movement processes within the key switch are not obstructed. About the design of the guide link in the drive lever can optimized the function of the locking tab in an advantageous manner will.
Anhand der Zeichnung soll ein Ausführungsbeispiel der Erfindung näher erläutert werden.On the basis of the drawing, an embodiment of the invention are explained in more detail.
Fig. 1 zeigt für einen Niederspannungsschutzschalter die Bau gruppe zur Betätigung des beweglichen Kontaktarmes, be stehend aus: beweglichen Kontaktarm, Schaltschloß, Antriebsmechanismus und Auslösebetätigung. Die Baugruppe ist in der EIN-Stellung des Schalters gezeigt. Fig. 1 shows for a low-voltage circuit breaker, the construction group for actuating the movable contact arm, consisting of: movable contact arm, switch lock, drive mechanism and trigger actuation. The module is shown in the ON position of the switch.
Fig. 2 zeigt die Baugruppe in einer Schalterstellung während des Ausschaltvorganges kurz bevor die Antriebsfedern die Totpunktlage erreicht haben. Fig. 2 shows the module in a switch position during the switch-off process shortly before the drive springs have reached the dead center position.
Fig. 3 zeigt die Baugruppe in der Endstellung des Antriebs hebels bei verschweißten Kontakten. Fig. 3 shows the assembly in the end position of the drive lever with welded contacts.
Fig. 4 zeigt die Baugruppe in der AUS-Stellung des Schalters. Fig. 4 shows the assembly in the OFF position of the switch.
Fig. 5 zeigt einen Teil der Baugruppe in "Explosionsdarstel lung". Fig. 5 shows a part of the assembly in "Explosionsdarstel development".
Im Ausführungsbeispiel ist der bewegliche Kontakt 1 des Nieder spannungsschutzschalters drehbar auf einer Achse 2 in einer Schaltwelle 3 gelagert. Die Schaltwelle 3 selbst ist ortsfest in dem nicht dargestellten Schaltergehäuse gelagert. Die Achse 2 ist gleichzeitig Angriffspunkt einer unteren Kniegelenklasche 5. Eine dazugehörige obere Kniegelenklasche 6 stützt sich an einem Bolzen 7 ab, der sich an einem Klinkenhebel 8 befindet. Der Klinkenhebel 8 dient zur Überstromauslösung des Schalt schlosses und ist drehbar auf einer Achse 9 gelagert, die wiederum in einem Schloßhalter 10 ortsfest gelagert ist. Der Schloßhalter 10 dient als Tragrahmen für das Schaltschloß des Schalters und ist in dem Schaltergehäuse - z.B. durch Einnieten - befestigt. Die Kniegelenklasche 5 und 6 ist aus Symmetriegründen jeweils beidseitig vom Klinkenhebel 8 angeordnet und jeweils in der Mitte mit einem Kniegelenkbolzen 16 verbunden. In gleicher Ebene mit den oberen Kniegelenklaschen 6 sind drehbar auf der Achse 9 zwei Sperrlaschen 11 gelagert. Diese Sperrlaschen sind über Mitnahmebolzen 12 mit dem Antriebshebel 13 gekoppelt, wobei die Mitnahmebolzen 12 in Kulissen des Antriebshebels 13 geführt sind. Der Antriebshebel 13 ist drehbar an ortsfesten Lagerbolzen 14 gelagert und fest mit einem aus dem Schaltergehäuse herausge führten Betätigungshandgriff 15 verbunden. Zwischen den Knie gelenkbolzen 16 und einem Bolzen 17, der im oberen Bereich des Antriebshebels 13 eingehängt ist, sind beidseitig von dem Klinkenhebel 8 je eine Antriebsfeder 18 angeordnet. Schloßhalter 10 und Antriebshebel 13 sind ebenfalls beidseitig des Klinken hebels 8 angeordnet. Mit 22 ist eine Auslösewelle gezeigt, mit der in bekannter Weise die Auslösung des Klinkenhebels 8 ge steuert wird.In the exemplary embodiment, the movable contact 1 of the low-voltage circuit breaker is rotatably mounted on an axis 2 in a control shaft 3 . The selector shaft 3 itself is fixed in the switch housing, not shown. Axis 2 is also the point of attack of a lower knee joint plate 5 . An associated upper knee joint bracket 6 is supported on a bolt 7 , which is located on a ratchet lever 8 . The ratchet lever 8 is used for overcurrent triggering of the switching lock and is rotatably mounted on an axis 9 , which in turn is mounted in a fixed position in a lock holder 10 . The lock holder 10 serves as a support frame for the switching mechanism of the switch and is in the switch housing - fixed - for example by riveting. For reasons of symmetry, the knee joint bracket 5 and 6 is arranged on both sides of the ratchet lever 8 and is connected in the middle to a knee joint pin 16 . In the same plane with the upper knee joint plates 6 , two locking plates 11 are rotatably mounted on the axis 9 . These locking tabs are coupled via driving pin 12 with the drive lever 13, whereby the driving pins are guided in scenes of the drive lever 13 12th The drive lever 13 is rotatably mounted on fixed bearing pins 14 and firmly connected to an operating handle 15 guided out of the switch housing. Between the knee joint pin 16 and a bolt 17 which is suspended in the upper region of the drive lever 13 , a drive spring 18 is arranged on both sides of the pawl lever 8 . Lock holder 10 and drive lever 13 are also arranged on both sides of the pawl lever 8 . With 22 a trigger shaft is shown, with which the triggering of the ratchet lever 8 is controlled in a known manner.
Fig. 1 zeigt, daß in der Betriebsstellung EIN die Sperrlaschen 11 als Anschlag für die Kniegelenke dienen, indem die oberen Kniegelenklaschen 6 an den Sperrlaschen 11 in den Berührungs punkten 20 zum Anliegen kommen. Die Mitnahmebolzen 12 liegen in dieser Betriebsstellung an einem Fortsatz 25 des Schloß halters 10 und bilden somit einen Anschlag für den Antriebs hebel 13. In der Betriebsstellung EIN besteht ein Durchhub 23 zwischen beweglichem Kontakt 1 und Schaltwelle 3, derart, daß das kurze Ende des Kontaktes 1 Bewegungsspiel gegenüber einer Anschlagfläche der Schaltwelle 3 besitzt. Der Pfeil 21 zeigt die Bewegungsrichtung des Betätigungshandgriffes 15 beim Aus schalten. Fig. 1 shows that in the operating position ON, the locking tabs 11 serve as a stop for the knee joints by the upper knee joint tabs 6 on the locking tabs 11 in the touch 20 come to rest. The driving bolts 12 are in this operating position on an extension 25 of the lock holder 10 and thus form a stop for the drive lever 13th In the operating position ON there is a through-stroke 23 between the movable contact 1 and the switching shaft 3 , such that the short end of the contact 1 has a play in relation to a stop surface of the switching shaft 3 . The arrow 21 shows the direction of movement of the operating handle 15 when switching off.
Gemäß Fig. 2 gelangen die Sperrlaschen 11 beim Ausschalten in den Berührungspunkten 24 zur Anlage an die oberen Kniegelenk laschen 6. Diese Anlage erfolgt kurz bevor die Kraftkomponente der Antriebsfedern 18 über den Mittelpunkt des Bolzens 7 hin überwandert. Die Sperrlaschen 11 üben auf die oberen Kniege lenklaschen 6 ein Drehmoment in Öffnungsrichtung der Kniege lenke aus. Wenn bei dem dadurch eingeleiteten Öffnen der Knie gelenke die Kraftkomponente der Federn über den Bolzen 7 hin auswandert, dann erfolgt das Zusammenbrechen der Kniegelenke und somit die Ausschaltung der Kontakte.Referring to FIG. 2, the locking tabs 11 pass during disconnection at the contact points 24 tabs to bear against the upper toggle joint. 6 This system takes place shortly before the force component of the drive springs 18 migrates over the center of the bolt 7 . The locking tabs 11 steer on the upper knee steering tab 6 a torque in the opening direction of the knee. If the force component of the springs migrates over the bolt 7 when the knees are opened, the knee joints collapse and the contacts are switched off.
Fig. 3 zeigt den Vorgang des Abschaltens oder auch des Aus lösens über die Auslösewelle 22 wenn die Kontakte des Schalters verschweißt sind. Die Kniegelenke und auch die Schaltwelle 3 bewegen sich dabei so lange in Ausschaltrichtung 21, bis der Durchhub 23 zwischen Kontakt 1 und Schaltwelle 3 aufgehoben ist. Der Antriebshebel 13 mit den gekoppelten Sperrlaschen 11 kann bei verschweißten Kontakten nur so weit nachgeführt werden, bis die Sperrlaschen 11 an den oberen Kniegelenklaschen 6, die sich nach Aufhebung des Durchhubes 23 in einer blockierten Zwischenlage befinden, zur Anlage kommen. Würde man versuchen, den Betätigungshandgriff 15 weiter in Ausschaltrichtung 21 zu bewegen, so würden die Sperrlaschen 11 auf die oberen Kniege lenklaschen 6 ein Moment in Ausschaltrichtung erzeugen. Der Betätigungshandgriff 15 würde sich aber nur dann bewegen lassen, wenn dabei die Kontaktverschweißung aufbricht. Eine Optimie rung der Funktion der Sperrlaschen 11 hinsichtlich der Blockier stellung des Antriebshebels 13 und der auf die verschweißten Kontakte einwirkenden Aufbrechkraft kann durch Gestaltung der Führungskulissen für die Bolzen 12 durchgeführt werden. Fig. 3 shows the process of switching off or off from the trigger shaft 22 when the contacts of the switch are welded. The knee joints and also the selector shaft 3 move in the switch-off direction 21 until the through-stroke 23 between contact 1 and selector shaft 3 is canceled. The drive lever 13 with the coupled locking tabs 11 can only be tracked so far in the case of welded contacts that the locking tabs 11 come to rest on the upper knee-link tabs 6 , which are located in a blocked intermediate position after lifting the through stroke 23 . Would you try to move the operating handle 15 further in the switch-off direction 21 , so the locking tabs 11 on the upper knee steering link 6 would generate a moment in the switch-off direction. The actuating handle 15 would, however, only be able to be moved if the contact welding breaks open. Optimization of the function of the locking tabs 11 with regard to the blocking position of the drive lever 13 and the breaking force acting on the welded contacts can be carried out by designing the guide slots for the bolts 12 .
In Fig. 4 ist mit Pfeil 19 die Bewegungsrichtung des Betäti gungshandgriffes 15 beim Einschalten gezeigt. In der darge stellten AUS-Stellung des Schalters liegt keine Berührung zwischen den Sperrlaschen 11 und den oberen Kniegelenklaschen 6 vor.In Fig. 4, arrow 19 shows the direction of movement of the actuation handle 15 when switched on. In the Darge OFF position of the switch there is no contact between the locking tabs 11 and the upper knee joint tabs 6 .
Claims (5)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3802184A DE3802184A1 (en) | 1988-01-26 | 1988-01-26 | LOW VOLTAGE SWITCH WITH LOCKING LOBS |
EP88119728A EP0325725B1 (en) | 1988-01-26 | 1988-11-26 | Low tension switch with catch lever |
DE3852817T DE3852817D1 (en) | 1988-01-26 | 1988-11-26 | Low voltage switch with locking lever. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3802184A DE3802184A1 (en) | 1988-01-26 | 1988-01-26 | LOW VOLTAGE SWITCH WITH LOCKING LOBS |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3802184A1 DE3802184A1 (en) | 1989-08-03 |
DE3802184C2 true DE3802184C2 (en) | 1990-05-17 |
Family
ID=6345987
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3802184A Granted DE3802184A1 (en) | 1988-01-26 | 1988-01-26 | LOW VOLTAGE SWITCH WITH LOCKING LOBS |
DE3852817T Expired - Fee Related DE3852817D1 (en) | 1988-01-26 | 1988-11-26 | Low voltage switch with locking lever. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3852817T Expired - Fee Related DE3852817D1 (en) | 1988-01-26 | 1988-11-26 | Low voltage switch with locking lever. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0325725B1 (en) |
DE (2) | DE3802184A1 (en) |
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DE4116454A1 (en) * | 1991-05-18 | 1992-11-19 | Licentia Gmbh | MECHANISM FOR A SELF-SWITCH |
US5213206A (en) * | 1991-05-29 | 1993-05-25 | Westinghouse Electric Corp. | Circuit breaker with positive on/off interlock |
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US3197582A (en) * | 1962-07-30 | 1965-07-27 | Fed Pacific Electric Co | Enclosed circuit interrupter |
DE2808609C3 (en) * | 1978-02-28 | 1980-09-18 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Low voltage toggle switch |
DE2831135B1 (en) * | 1978-07-13 | 1979-11-15 | Siemens Ag | Low-voltage circuit breaker with an insulating material housing |
DE8023509U1 (en) * | 1980-08-29 | 1980-11-27 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Low voltage circuit breaker for locking lever |
DE3033213C2 (en) * | 1980-08-29 | 1982-10-21 | Siemens AG, 1000 Berlin und 8000 München | Low voltage circuit breaker with a locking lever |
DE3033212A1 (en) * | 1980-08-29 | 1982-04-01 | Siemens Ag | Emergency cut=out switch with knee lever system - acting on contact blocks to ensure separation, even when welded together |
IT8223118V0 (en) * | 1982-10-07 | 1982-10-07 | Sace Spa | ELECTRIC SWITCH WITH STOPPING THE CONTROL LEVER STROKE IN CASE OF WELDING THE CONTACTS. |
-
1988
- 1988-01-26 DE DE3802184A patent/DE3802184A1/en active Granted
- 1988-11-26 EP EP88119728A patent/EP0325725B1/en not_active Expired - Lifetime
- 1988-11-26 DE DE3852817T patent/DE3852817D1/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
EP0325725B1 (en) | 1995-01-18 |
DE3852817D1 (en) | 1995-03-02 |
EP0325725A2 (en) | 1989-08-02 |
DE3802184A1 (en) | 1989-08-03 |
EP0325725A3 (en) | 1991-03-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: AEG NIEDERSPANNUNGSTECHNIK GMBH & CO. KG, 24534 NE |