EP3061109B1 - Electric circuit breaker - Google Patents
Electric circuit breaker Download PDFInfo
- Publication number
- EP3061109B1 EP3061109B1 EP14808929.5A EP14808929A EP3061109B1 EP 3061109 B1 EP3061109 B1 EP 3061109B1 EP 14808929 A EP14808929 A EP 14808929A EP 3061109 B1 EP3061109 B1 EP 3061109B1
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- EP
- European Patent Office
- Prior art keywords
- latching
- spring
- circuit breaker
- disc
- pawl
- 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.)
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- 238000004804 winding Methods 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000007257 malfunction Effects 0.000 description 6
- 230000001010 compromised effect Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3005—Charging means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3005—Charging means
- H01H3/3021—Charging means using unidirectional coupling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2235/00—Springs
- H01H2235/01—Spiral spring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
- H01H3/3031—Means for locking the spring in a charged state
Definitions
- the invention relates to electrical circuit breakers having the features according to the preamble of patent claim 1.
- circuit breakers are sold by Siemens AG under the product names Siemens 3AH and 3AE circuit breakers.
- the previously known circuit breaker have a spring-loaded drive and a manual-winding device with which the spring-loaded drive can be tensioned.
- the manual winding device comprises in these prior art circuit breakers a hand crank and a two-stage worm gear.
- the US4,491,709 discloses the use of a hand-operated spring-loaded drive, wherein a detent disk is used.
- the invention has for its object to provide an electrical circuit breaker with a manually tensioned spring drive, which has a particularly simple structural design, but still precludes a hazard to operators in the event of malfunction or incorrect operation of the circuit breaker.
- the invention provides that the manual winding device is a rotatable locking disk, a next to the locking disc, in particular on the end face of the locking disc, arranged latch and a standing in communication with the latch manual actuator for moving the Has latch, the latch is controlled or einêtbar in a latching toothing of the locking disc and move by pressing the actuator, the latch and thereby the locking disc along a predetermined Set rotational direction for tensioning the spring can rotate, and the locking teeth is asymmetrical such that a force transmission from the latch to the locking disc only along the desired direction of rotation is possible and slipping of the locking disc on the latch takes place when the locking disc along the target rotational direction faster than the Pawl turns.
- a significant advantage of the circuit breaker according to the invention is to be seen in the fact that in this a feedback or feedback on the manual winding device and thus on a hand-lifting device operator is excluded, even if it should come to a malfunction or malfunction of the circuit breaker. Due to the inventively provided asymmetry of the locking teeth ensures that the locking disk can ratchet along the latch when the locking disk rotates faster in the event of malfunction or malfunction of the circuit breaker along the desired direction of rotation than the latch. A power transmission from the latch to the locking disc is thus possible only along the desired direction of rotation, and only if the latch when actuated by the manual winding faster than the locking disc moves, ie during a user-side desired or user-induced tensioning of the spring drive. In the case of a malfunction or incorrect operation of the circuit breaker or in the event that the locking disc - for whatever reason - automatically rotates along the desired direction of rotation, there is no transmission of power between the latch and locking disc, so that an operator can not be compromised.
- the latching toothing of the latching disc is a circular arc-shaped external toothing.
- the locking disk can be achieved that the locking disk only cooperates with the latch when the spring of the spring drive by turning the locking disc along the desired direction of rotation is tense. During the relaxation phase of the spring can - be ensured due to the circular arc of the external teeth - that the locking disc is mechanically separated from the latch and a power transmission between these two components is omitted.
- the circular arc angle has an angle value between (inclusive) 160 ° and (including) 200 °.
- the locking disc is rotatably connected to a switching shaft of the circuit breaker
- the spring of the spring accumulator drive forms a closing spring and a first rotation angle range of the switching shaft - when turning along the desired direction of rotation - for tensioning the spring and a second rotation angle range of the switching shaft - when turning along the desired direction of rotation - to relax the spring and to turn on the circuit breaker is used.
- the circular arc-shaped external toothing of the locking disc and the latching pawl are arranged to each other such that the latching pawl engages or can engage in the circular arc-shaped external toothing, when the switching shaft is in the first rotation angle range.
- the circular arc-shaped external toothing of the locking disc and the latch are arranged to each other such that the latch is out of engagement with the circular arc-shaped external teeth when the shift shaft is in the second rotation angle range.
- the manual winding device it is considered advantageous if this has a rocker pivotable about a solid rocker axis on which the latch is pivotally supported about a pivot axis, wherein the pivot axis is parallel to the rocker axis and in the case of Swiveling the rocker about the rocker axis, the pivot axis of the latch is also rotated about the rocker axis.
- the pivoting range of the latch in the direction of the locking disc is limited by means of a stop.
- the manual winding device comprises a positioning spring which generates a spring force on the latch in the direction of the locking disk.
- the spring of the spring drive can be tensioned during rotation of the shift shaft when a spring end of the spring of the spring drive to the shift shaft - is mounted eccentrically with respect to the shaft axis and the axis of rotation of the locking disc and the axis of the switching shaft are identical.
- the circuit breaker on a backstop, which prevents rotation of the locking disc against the desired direction of rotation.
- the backstop preferably comprises a toothed wheel, which is arranged coaxially to the locking disk rotationally fixed on the switching shaft of the circuit breaker.
- FIG. 1 shows a manual winding device 10, which is suitable for clamping a spring-loaded drive 20 of an electrical circuit breaker, not shown in detail.
- the spring drive 20 includes a spring 21, whose in the FIG. 1 lower spring end 21a by means of a fastening bolt 22 and an eccentric 23 eccentrically mounted on a switching shaft 30 of the circuit breaker. That in the FIG. 1 upper spring end 21b is immovable or fixed to the housing.
- the spring 21 may be, for example, a switch-on spring whose spring energy is used to switch on the circuit breaker.
- the lower spring end 21a of the in the FIG. 1 shown position along a target rotational direction S pivoted down by the shift shaft 30 is rotated along the target rotational direction S.
- the manual winding device 10 To manually enable a tensioning of the spring 20 and a rotation of the switching shaft 30 about the target rotational direction S, the manual winding device 10, a manual actuator 11 in the form of a rod.
- the actuating device 11 is attached to a first rocker end of a rocker 12, which is pivotable about a rocker axis 13.
- a pivot axis 14 In the region of a second rocker end of the rocker 12, a pivot axis 14 is arranged, which holds a latch 15 pivotally.
- the detent pawl 15 is pressed by means of a positioning spring 16 on a circular arc-shaped external toothing 17 of a locking disk 18.
- a torsion spring 13a serves to rotate the rocker 12 to a predetermined starting position when no manual operation is performed.
- the pivot axis 14 is preferably parallel to the rocker axis 13, so that in the case of pivoting the rocker 12 about the rocker axis 13, the pivot axis 14, which holds the latch 15 is also rotated about the rocker axis 13.
- the circular arc-shaped external toothing 17 is asymmetrical, so that a power transmission from the detent pawl 15 to the locking disc 18 only along the target rotational direction S is possible and slipping of the locking disc 18 takes place on the latch 15, when the locking disc 18 along the target rotational direction S faster than the Locking pawl 15 turns.
- Such a "faster" turning the locking disc 18 relative to the latch 15 may occur, for example, when a in the FIG. 1 not further shown motor drive of the circuit breaker is activated and the spring 21 of the spring drive 20 is additionally tensioned by means of the motor drive.
- the circular arc angle of the circular arc-shaped external toothing 17 has a value of approximately 180 °.
- Such a circular arc angle ensures that the detent pawl 15 is engaged with the locking disc 18 only when a tensioning of the spring 21 of the in the FIG. 1 shown unstrained state by rotation of the switching shaft 30 along the target rotational direction S should be made.
- the spring 21 is in its tensioned state, they - starting from the illustration according to FIG. 1 -
- the detent pawl 15 loses its engagement with the external toothing 17 or with the locking disc 18, so that the manual winding device 10 is automatically separated from the spring-loaded drive 20.
- the manual winding device 10 is operated to tension the spring 21 as follows:
- the manual actuating device 11 is set in an oscillating movement, by which the rocker 12 is pivoted about the rocker axis 13.
- the pivoting of the rocker 12 about the rocker axis 13 leads to a pivoting of the pivot axis 14 and thus to a movement of the detent pawl 15 tangentially along the external teeth 17 of the locking disk 18.
- the movement phase in which the latching pawl 15 is moved along the desired direction of rotation S is engage the detent pawl 15 in the outer toothing 17 force-transmitting and rotate the locking disc 18 along the desired direction of rotation S, whereby the shift shaft 30 is rotated about the desired direction of rotation S and the spring 21 is tensioned.
- the circuit breaker is in accordance with FIG. 1 equipped with a backstop 40 which includes a gear 41.
- the gear 41 is connected to a not shown latch mechanism in connection, which allows rotation of the gear 41 and thus rotation of the switching shaft 30 exclusively in the desired direction of rotation S and otherwise inhibits.
- FIG. 2 shows the rotation of the locking disc 18 along the desired direction of rotation S, as soon as the manual actuator 11 is actuated and with this by pivoting the rocker 12, the latch 15 is pushed forward. It can be seen that the spring end 21a has already been moved slightly downwards due to the eccentric attachment to the control shaft 30 by the rotation of the control shaft 30.
- FIG. 3 shows a further state of the spring drive 20 during the clamping operation in more detail. It can be seen that the latching pawl 15 engages in a central region of the external toothing 17 of the latching disc 18 and the spring 21 of the spring accumulator 20 is thus already half clamped in half.
- FIG. 4 shows the spring 21 and the spring drive 20 in the fully tensioned state. It can be seen that the latching pawl 15 has reached the last tooth of the circular outer teeth 17 of the locking disc 18 and a further oscillating movement of the manual actuator 11 can cause no further tensioning of the spring 21 and no further rotation of the switching shaft 30 along the desired direction of rotation S. ,
- the first rotation angle range is in the embodiment according to the FIGS. 1 to 4 defined by the upper position of the spring end 21a of the spring 21 according to FIG. 1 and the lower position of the spring end 21a of the spring 21 according to FIG. 4 ,
- the second rotation angle range of the shift shaft 30 is between the state according to FIG. 4 and the state according to FIG. 1 when the shift shaft 30 is further rotated along the target rotational direction S.
- the manual winding device 10 is preferably equipped with a stop 19 which limits the pivotability of the latching pawl 15 about the pivoting axis 14.
- the stop 19 may be formed for example by a slot 19a and a bolt 19b (see. FIG. 1 ).
- FIG. 5 shows the circuit breaker according to the FIGS. 1 and 4 again in a different view in the tensioned state of the spring 21. Die FIG. 5 Thus shows the same state of the spring 21 and the spring drive 20 as the FIG. 4 ,
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Breakers (AREA)
- Transmission Devices (AREA)
Description
Die Erfindung bezieht sich auf elektrische Leistungsschalter mit den Merkmalen gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to electrical circuit breakers having the features according to the preamble of patent claim 1.
Derartige Leistungsschalter werden von der Siemens AG unter den Produktnamen Siemens Leistungsschalter 3AH und 3AE vertrieben. Die vorbekannten Leistungsschalter weisen einen Federspeicherantrieb und eine Handaufzugseinrichtung auf, mit der sich der Federspeicherantrieb spannen lässt. Die Handaufzugseinrichtung umfasst bei diesen vorbekannten Leistungsschaltern eine Handkurbel sowie ein zweistufiges Schneckengetriebe.Such circuit breakers are sold by Siemens AG under the product names Siemens 3AH and 3AE circuit breakers. The previously known circuit breaker have a spring-loaded drive and a manual-winding device with which the spring-loaded drive can be tensioned. The manual winding device comprises in these prior art circuit breakers a hand crank and a two-stage worm gear.
Die
Der Erfindung liegt die Aufgabe zugrunde, einen elektrischen Leistungsschalter mit einem manuell spannbaren Federspeicherantrieb anzugeben, der einen besonders einfachen konstruktiven Aufbau aufweist, aber dennoch eine Gefährdung von Bedienpersonen im Falle einer Fehlfunktion oder eine Fehlbedienung des Leistungsschalters ausschließt.The invention has for its object to provide an electrical circuit breaker with a manually tensioned spring drive, which has a particularly simple structural design, but still precludes a hazard to operators in the event of malfunction or incorrect operation of the circuit breaker.
Diese Aufgabe wird erfindungsgemäß durch einen elektrischen Leistungsschalter mit den Merkmalen gemäß Patentanspruch 1 gelöst. Vorteilhafte Ausgestaltungen des erfindungsgemäßen Leistungsschalters sind in Unteransprüchen angegeben.This object is achieved by an electrical circuit breaker with the features of claim 1. Advantageous embodiments of the circuit breaker according to the invention are specified in subclaims.
Danach ist erfindungsgemäß vorgesehen, dass die Handaufzugseinrichtung eine drehbare Rastscheibe, eine neben der Rastscheibe, insbesondere an der Stirnseite der Rastscheibe, angeordnete Rastklinke und eine mit der Rastklinke in Verbindung stehende manuelle Betätigungseinrichtung zum Bewegen der Rastklinke aufweist, die Rastklinke in eine Rastverzahnung der Rastscheibe eingesteuert oder einsteuerbar ist und sich durch ein Betätigen der Betätigungseinrichtung die Rastklinke bewegen und dadurch die Rastscheibe entlang einer vorgegebenen Solldrehrichtung zum Spannen der Feder drehen lässt, und die Rastverzahnung derart asymmetrisch ist, dass eine Kraftübertragung von der Rastklinke auf die Rastscheibe nur entlang der Solldrehrichtung möglich ist und ein Entlangrutschen der Rastscheibe an der Rastklinke erfolgt, wenn sich die Rastscheibe entlang der Solldrehrichtung schneller als die Rastklinke dreht.Thereafter, the invention provides that the manual winding device is a rotatable locking disk, a next to the locking disc, in particular on the end face of the locking disc, arranged latch and a standing in communication with the latch manual actuator for moving the Has latch, the latch is controlled or einsteuerbar in a latching toothing of the locking disc and move by pressing the actuator, the latch and thereby the locking disc along a predetermined Set rotational direction for tensioning the spring can rotate, and the locking teeth is asymmetrical such that a force transmission from the latch to the locking disc only along the desired direction of rotation is possible and slipping of the locking disc on the latch takes place when the locking disc along the target rotational direction faster than the Pawl turns.
Ein wesentlicher Vorteil des erfindungsgemäßen Leistungsschalters ist darin zu sehen, dass bei diesem eine Rückwirkung bzw. Rückkopplung auf die Handaufzugseinrichtung und damit auf eine die Handaufzugseinrichtung bedienende Bedienperson ausgeschlossen ist, selbst wenn es zu einer Fehlbedienung oder Fehlfunktion des Leistungsschalters kommen sollte. Aufgrund der erfindungsgemäß vorgesehenen Asymmetrie der Rastverzahnung wird sichergestellt, dass die Rastscheibe an der Rastklinke entlangratschen kann, wenn sich die Rastscheibe im Falle einer Fehlfunktion oder Fehlbedienung des Leistungsschalters schneller entlang der Solldrehrichtung dreht als die Rastklinke. Eine Kraftübertragung von der Rastklinke auf die Rastscheibe ist somit nur entlang der Solldrehrichtung möglich, und auch nur dann, wenn sich die Rastklinke bei Betätigung durch die Handaufzugseinrichtung schneller als die Rastscheibe bewegt, also während eines benutzerseitig gewünschten bzw. benutzerseitig herbeigeführten Spannens des Federspeicherantriebs. Im Falle einer Fehlfunktion oder einer Fehlbedienung des Leistungsschalters bzw. im Falle, dass sich die Rastscheibe - aus welchen Gründen auch immer - selbsttätig entlang der Solldrehrichtung dreht, fehlt es an einer Kraftübertragung zwischen Rastklinke und Rastscheibe, so dass eine Bedienperson nicht gefährdet werden kann.A significant advantage of the circuit breaker according to the invention is to be seen in the fact that in this a feedback or feedback on the manual winding device and thus on a hand-lifting device operator is excluded, even if it should come to a malfunction or malfunction of the circuit breaker. Due to the inventively provided asymmetry of the locking teeth ensures that the locking disk can ratchet along the latch when the locking disk rotates faster in the event of malfunction or malfunction of the circuit breaker along the desired direction of rotation than the latch. A power transmission from the latch to the locking disc is thus possible only along the desired direction of rotation, and only if the latch when actuated by the manual winding faster than the locking disc moves, ie during a user-side desired or user-induced tensioning of the spring drive. In the case of a malfunction or incorrect operation of the circuit breaker or in the event that the locking disc - for whatever reason - automatically rotates along the desired direction of rotation, there is no transmission of power between the latch and locking disc, so that an operator can not be compromised.
Als besonders vorteilhaft wird es angesehen, wenn die Rastverzahnung der Rastscheibe eine kreisbogenförmige Außenverzahnung ist. Bei dieser Ausgestaltung der Rastscheibe lässt sich erreichen, dass die Rastscheibe nur dann mit der Rastklinke zusammenwirkt, wenn die Feder des Federspeicherantriebs durch Drehen der Rastscheibe entlang der Solldrehrichtung gespannt wird. Während der Entspannungsphase der Feder kann - aufgrund der Kreisbogenförmigkeit der Außenverzahnung - gewährleistet werden, dass die Rastscheibe von der Rastklinke mechanisch getrennt ist und eine Kraftübertragung zwischen diesen beiden Komponenten unterbleibt.It is considered to be particularly advantageous if the latching toothing of the latching disc is a circular arc-shaped external toothing. In this embodiment of the locking disk can be achieved that the locking disk only cooperates with the latch when the spring of the spring drive by turning the locking disc along the desired direction of rotation is tense. During the relaxation phase of the spring can - be ensured due to the circular arc of the external teeth - that the locking disc is mechanically separated from the latch and a power transmission between these two components is omitted.
Vorzugsweise weist der Kreisbogenwinkel einen Winkelwert zwischen (einschließlich) 160° und (einschließlich) 200° auf.Preferably, the circular arc angle has an angle value between (inclusive) 160 ° and (including) 200 °.
Bei einer konstruktiv einfachen und damit vorteilhaften Ausgestaltung des Leistungsschalters ist vorgesehen, dass die Rastscheibe drehfest mit einer Schaltwelle des Leistungsschalters verbunden ist, die Feder des Federspeicherantriebs eine Einschaltfeder bildet und ein erster Drehwinkelbereich der Schaltwelle - bei Drehen entlang der Solldrehrichtung - zum Spannen der Feder und ein zweiter Drehwinkelbereich der Schaltwelle - bei Drehen entlang der Solldrehrichtung - zum Entspannen der Feder und zum Einschalten des Leistungsschalters dient.In a structurally simple and thus advantageous embodiment of the circuit breaker is provided that the locking disc is rotatably connected to a switching shaft of the circuit breaker, the spring of the spring accumulator drive forms a closing spring and a first rotation angle range of the switching shaft - when turning along the desired direction of rotation - for tensioning the spring and a second rotation angle range of the switching shaft - when turning along the desired direction of rotation - to relax the spring and to turn on the circuit breaker is used.
Vorzugsweise sind die kreisbogenförmige Außenverzahnung der Rastscheibe und die Rastklinke derart zueinander angeordnet, dass die Rastklinke in die kreisbogenförmige Außenverzahnung eingreift oder eingreifen kann, wenn sich die Schaltwelle in dem ersten Drehwinkelbereich befindet.Preferably, the circular arc-shaped external toothing of the locking disc and the latching pawl are arranged to each other such that the latching pawl engages or can engage in the circular arc-shaped external toothing, when the switching shaft is in the first rotation angle range.
Entsprechend wird es als vorteilhaft angesehen, wenn die kreisbogenförmige Außenverzahnung der Rastscheibe und die Rastklinke derart zueinander angeordnet sind, dass die Rastklinke außer Eingriff mit der kreisbogenförmigen Außenverzahnung steht, wenn sich die Schaltwelle in dem zweiten Drehwinkelbereich befindet.Accordingly, it is considered advantageous if the circular arc-shaped external toothing of the locking disc and the latch are arranged to each other such that the latch is out of engagement with the circular arc-shaped external teeth when the shift shaft is in the second rotation angle range.
Bezüglich der Ausgestaltung der Handaufzugseinrichtung wird es als vorteilhaft angesehen, wenn diese eine um eine feste Wippenachse schwenkbare Wippe aufweist, an der die Rastklinke um eine Schwenkachse schwenkbar gehalten ist, wobei die Schwenkachse parallel zur Wippenachse liegt und im Falle eines Schwenkens der Wippe um die Wippenachse die Schwenkachse der Rastklinke ebenfalls um die Wippenachse gedreht wird.With regard to the embodiment of the manual winding device, it is considered advantageous if this has a rocker pivotable about a solid rocker axis on which the latch is pivotally supported about a pivot axis, wherein the pivot axis is parallel to the rocker axis and in the case of Swiveling the rocker about the rocker axis, the pivot axis of the latch is also rotated about the rocker axis.
Vorzugsweise ist der Schwenkbereich der Rastklinke in Richtung der Rastscheibe (bzw. in Richtung der Schaltwelle) mittels eines Anschlags begrenzt.Preferably, the pivoting range of the latch in the direction of the locking disc (or in the direction of the switching shaft) is limited by means of a stop.
Um eine definierte Position der Rastklinke zu gewährleisten, wird es als vorteilhaft angesehen, wenn die Handaufzugseinrichtung eine Positionierfeder umfasst, die eine Federkraft auf die Rastklinke in Richtung auf die Rastscheibe erzeugt.In order to ensure a defined position of the latch, it is considered advantageous if the manual winding device comprises a positioning spring which generates a spring force on the latch in the direction of the locking disk.
Besonders einfach und damit vorteilhaft lässt sich die Feder des Federspeicherantriebs bei Rotation der Schaltwelle spannen, wenn ein Federende der Feder des Federspeicherantriebs an der Schaltwelle - bezogen auf die Wellenachse - exzentrisch befestigt ist und die Drehachse der Rastscheibe und die Achse der Schaltwelle identisch sind.Particularly simple and thus advantageous is the spring of the spring drive can be tensioned during rotation of the shift shaft when a spring end of the spring of the spring drive to the shift shaft - is mounted eccentrically with respect to the shaft axis and the axis of rotation of the locking disc and the axis of the switching shaft are identical.
Vorzugsweise weist der Leistungsschalter eine Rücklaufsperre auf, die ein Drehen der Rastscheibe entgegen der Solldrehrichtung verhindert.Preferably, the circuit breaker on a backstop, which prevents rotation of the locking disc against the desired direction of rotation.
Die Rücklaufsperre umfasst vorzugsweise ein Zahnrad, das koaxial zu der Rastscheibe drehfest auf der Schaltwelle des Leistungsschalters angeordnet ist.The backstop preferably comprises a toothed wheel, which is arranged coaxially to the locking disk rotationally fixed on the switching shaft of the circuit breaker.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen näher erläutert; dabei zeigen beispielhaft
- Figur 1
- ein Ausführungsbeispiel für einen elektrischen Leistungsschalter mit einem eine Feder aufweisenden Federspeicherantrieb und einer Handaufzugseinrichtung zum manuellen Spannen der Feder, wobei die
Figur 1 den entspannten Zustand der Feder zeigt, - Figuren 2-3
- das Spannen der Feder gemäß
Figur 1 anhand unterschiedlicher Federspannungszustände, - Figur 4
- den gespannten Zustand der Feder gemäß
Figur 1 und - Figur 5
- den Leistungsschalter gemäß
Figur 4 , also im gespannten Zustand der Feder, in einer anderen Sicht.
- FIG. 1
- an embodiment of an electrical circuit breaker with a spring having a spring drive and a manual winding device for manually biasing the spring, wherein the
FIG. 1 shows the relaxed state of the spring, - Figures 2-3
- the tensioning of the spring according to
FIG. 1 based on different spring tension states, - FIG. 4
- the tensioned state of the spring according to
FIG. 1 and - FIG. 5
- the circuit breaker according to
FIG. 4 , so in the tensioned state of the spring, in a different view.
In den Figuren werden der Übersicht halber für identische oder vergleichbare Komponenten stets dieselben Bezugszeichen verwendet.For the sake of clarity, the same reference numerals are always used in the figures for identical or comparable components.
Die
Der Federspeicherantrieb 20 umfasst eine Feder 21, deren in der
Zum Spannen der Feder 21 des Federspeicherantriebs 20 wird das untere Federende 21a von der in der
Um ein manuelles Spannen der Feder 20 bzw. ein Drehen der Schaltwelle 30 um die Solldrehrichtung S manuell zu ermöglichen, weist die Handaufzugseinrichtung 10 eine manuelle Betätigungseinrichtung 11 in Form einer Stange auf. Die Betätigungseinrichtung 11 ist an einem ersten Wippenende einer Wippe 12 befestigt, die um eine Wippenachse 13 schwenkbar ist. Im Bereich eines zweiten Wippenendes der Wippe 12 ist eine Schwenkachse 14 angeordnet, die eine Rastklinke 15 schwenkbar hält. Die Rastklinke 15 wird mittels einer Positionierfeder 16 auf eine kreisbogenförmige Außenverzahnung 17 einer Rastscheibe 18 gedrückt. Eine Drehfeder 13a dient dazu, die Wippe 12 in eine vorgegebene Ausgangsposition zu drehen, wenn keine manuelle Betätigung vorgenommen wird.To manually enable a tensioning of the
Die Schwenkachse 14 liegt vorzugsweise parallel zur Wippenachse 13, so dass im Falle eines Schwenkens der Wippe 12 um die Wippenachse 13 die Schwenkachse 14, die die Rastklinke 15 hält, ebenfalls um die Wippenachse 13 gedreht wird.The
Die kreisbogenförmige Außenverzahnung 17 ist asymmetrisch, so dass eine Kraftübertragung von der Rastklinke 15 auf die Rastscheibe 18 nur entlang der Solldrehrichtung S möglich ist und ein Entlangrutschen der Rastscheibe 18 an der Rastklinke 15 erfolgt, wenn sich die Rastscheibe 18 entlang der Solldrehrichtung S schneller als die Rastklinke 15 dreht. Ein solches "schnelleres" Drehen der Rastscheibe 18 relativ zur Rastklinke 15 kann beispielsweise auftreten, wenn ein in der
Bei dem Ausführungsbeispiel gemäß
Die Handaufzugseinrichtung 10 wird zum Spannen der Feder 21 wie folgt betrieben:The
Die manuelle Betätigungseinrichtung 11 wird in eine oszillierende Bewegung versetzt, durch die die Wippe 12 um die Wippenachse 13 geschwenkt wird. Das Schwenken der Wippe 12 um die Wippenachse 13 führt zu einem Verschwenken der Schwenkachse 14 und somit zu einer Bewegung der Rastklinke 15 tangential entlang der Außenverzahnung 17 der Rastscheibe 18. Während der Bewegungsphase, in der die Rastklinke 15 entlang der Solldrehrichtung S bewegt wird, wird die Rastklinke 15 in die Außenverzahnung 17 kraftübertragend eingreifen und die Rastscheibe 18 entlang der Solldrehrichtung S drehen, wodurch auch die Schaltwelle 30 um die Solldrehrichtung S gedreht wird und die Feder 21 gespannt wird.The
Bei der Rückwärtsbewegung der Rastklinke 15 wird aufgrund der Asymmetrie der Zähne der Außenverzahnung 17 keine Kraftübertragung zwischen der Rastklinke 15 und der Außenverzahnung 17 bzw. der Rastscheibe 18 erfolgen, so dass die Rastklinke 15 auf der Außenverzahnung 17 entlangratschen wird, ohne dabei die Rastscheibe 18 zurückzudrehen.In the backward movement of the
Um ein Zurückdrehen der Rastscheibe 18 entgegen der Solldrehrichtung S zuverlässig zu vermeiden, ist der Leistungsschalter gemäß
Die
Die
Die
Zusammengefasst lassen die
In dem ersten Drehwinkelbereich der Schaltwelle 30 befindet sich die Außenverzahnung 17 der Rastscheibe 18, wodurch in dem ersten Drehwinkelbereich der Schaltwelle 30 ein Spannen der Feder 21 mittels der Betätigungseinrichtung 11 bewirkt werden kann. Der zweite Drehwinkelbereich der Schaltwelle 30 liegt zwischen dem Zustand gemäß
Um zu verhindern, dass die Rastklinke 15 im zweiten Drehwinkelbereich der Schaltwelle 30 zu weit in Richtung Schaltwelle 30 schwenken kann, ist die Handaufzugseinrichtung 10 vorzugsweise mit einem Anschlag 19 ausgestattet, der die Schwenkbarkeit der Rastklinke 15 um die Schwenkachse 14 begrenzt. Der Anschlag 19 kann beispielsweise durch ein Langloch 19a und einen Bolzen 19b gebildet sein (vgl.
Die
Zusammengefasst wird durch die Kreisbogenförmigkeit der Außenverzahnung 17 sichergestellt, dass die manuelle Betätigungseinrichtung 11 ausschließlich im ersten Drehwinkelbereich der Schaltwelle 30, also während der Spannphase, mit der Schaltwelle 30 mechanisch gekoppelt ist und einem Entspannen der Feder 21 beim Weiterdrehen der Schaltwelle 30 entlang der Solldrehrichtung S ausgehend vom gespannten Zustand, wie er in der
Obwohl die Erfindung im Detail durch bevorzugte Ausführungsbeispiele näher illustriert und beschrieben wurde, so ist die Erfindung nicht durch die offenbarten Beispiele eingeschränkt und andere Variationen nach dem Gegenstand der Ansprüche können vom Fachmann hieraus abgeleitet werden.In summary, it is ensured by the circular arc of the
While the invention has been further illustrated and described in detail by way of preferred embodiments, the invention is not limited by the disclosed examples, and other variations on the subject matter of the claims may be derived therefrom by those skilled in the art.
- 1010
- HandaufzugseinrichtungManual winding facility
- 1111
- Betätigungseinrichtungactuator
- 1212
- Wippeseesaw
- 1313
- Wippenachserocker axis
- 13a13a
- Drehfedertorsion spring
- 1414
- Schwenkachseswivel axis
- 1515
- Rastklinkelatch
- 1616
- Positionierfederpositioning spring
- 1717
- Außenverzahnungexternal teeth
- 1818
- Rastscheibelocking disc
- 1919
- Anschlagattack
- 19a19a
- LanglochLong hole
- 19b19b
- Bolzenbolt
- 2020
- FederspeicherantriebSpring operating mechanism
- 2121
- Federfeather
- 21a21a
- unteres Federendelower spring end
- 21b21b
- oberes Federendeupper spring end
- 2222
- Befestigungsbolzenmounting bolts
- 2323
- Exzenterelementeccentric
- 3030
- Schaltwelleshift shaft
- 4040
- RücklaufsperreBackstop
- 4141
- Zahnradgear
- SS
- SolldrehrichtungSet direction of rotation
Claims (11)
- Electrical circuit breaker having a stored-energy spring drive (20) which has a spring (21), and having a manual winding device (10) which is suitable for manually tensioning the spring (21),
wherein- the manual winding device (10) has a rotatable latching disc (18), a latching pawl (15) which is arranged next to the latching disc (18), in particular at the end of the latching disc (18), and a manual operating device (11), which is connected to the latching pawl (15), for moving the latching pawl (15),- the latching pawl (15) is guided in a controlled manner or can be guided in a controlled manner into a latching tooth system of the latching disc (18) and, by virtue of operation of the operating device (11), the latching pawl (15) can move and as a result the latching disc (18) can rotate along a prespecified desired rotation direction (S) for tensioning the spring (21), and- the latching tooth system is asymmetrical in such a way that transmission of force from the latching pawl (15) to the latching disc (18) is possible only along the desired rotation direction (S) and the latching disc (18) slides along the latching pawl (15) when the latching disc (18) rotates along the desired rotation direction (S) more quickly than the latching pawl (15), andcharacterized in that
the latching tooth system of the latching disc (18) is an external tooth system (17) in the form of an arc of a circle. - Circuit breaker according to Claim 1,
characterized in that
the angle of the arc of a circle has an angle value of between 160° and 200° inclusive. - Circuit breaker according to one of preceding Claims 1 and 2,
characterized in that- the latching disc (18) is connected in a rotationally fixed manner to a switching shaft (30) of the circuit breaker,- the spring (21) of the stored-energy spring drive (20) forms a switch-on spring, and- a first rotation angle range of the switching shaft (30)- in the event of rotation along the desired rotation direction (S) - serves to tension the spring (21), and a second rotation angle range of the switching shaft (30) - in the event of rotation along the desired rotation direction (S)- serves to relieve the spring (21) of tension and to switch on the circuit breaker. - Circuit breaker according to Claim 3,
characterized in that
the external tooth system (17), which is in the form of an arc of a circle, of the latching disc (18) and the latching pawl (15) are arranged relative to one another in such a way that the latching pawl (15) engages or can engage into the external tooth system (17), which is in the form of an arc of a circle, when the switching shaft (30) is in the first rotation angle range. - Circuit breaker according to either of preceding Claims 3 and 4,
characterized in that
the external tooth system (17), which is in the form of an arc of a circle, of the latching disc (18) and the latching pawl (15) are arranged relative to one another in such a way that the latching pawl (15) disengages from the external tooth system (17), which is in the form of an arc of a circle, when the switching shaft (30) is in the second rotation angle range. - Circuit breaker according to one of the preceding claims,
characterized in that- the manual winding device (10) has a rocker (12) which can be pivoted about a fixed rocker axis (13) and on which the latching pawl (15) is held such that it can pivot about a pivot axis (14), wherein- the pivot axis (14) lies parallel to the rocker axis (13) and, in the event of the rocker (12) being pivoted about the rocker axis (13), the pivot axis (14) of the latching pawl (15) is likewise rotated about the rocker axis (13). - Circuit breaker according to Claim 6,
characterized in that
the pivot region of the latching pawl (15) is delimited in the direction of the latching disc (18) by means of a stop. - Circuit breaker according to either of preceding Claims 4 and 5,
characterized in that
the manual winding device (10) comprises a positioning spring (16) which generates a spring force on the latching pawl (15) in the direction of the latching disc (18). - Circuit breaker according to one of the preceding claims,
characterized in that- a spring end of the spring (21) of the stored-energy spring drive (20) is fastened to the switching shaft (30) in an eccentric manner - in relation to the shaft axis - and- the rotation axis of the latching disc (18) and the axis of the switching shaft (30) are identical. - Circuit breaker according to one of the preceding claims,
characterized in that
the circuit breaker has a return movement-limiting mechanism (40) which prevents rotation of the latching disc (18) counter to the desired rotation direction (S). - Circuit breaker according to Claim 10,
characterized in that
the return movement-limiting mechanism (40) comprises a gear wheel (41) which is arranged on the switching shaft (30) of the circuit breaker coaxially to the latching disc (18) in a manner fixed in terms of rotation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013227004.6A DE102013227004B4 (en) | 2013-12-20 | 2013-12-20 | Electric circuit breaker |
PCT/EP2014/076199 WO2015090934A1 (en) | 2013-12-20 | 2014-12-02 | Electric circuit breaker |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3061109A1 EP3061109A1 (en) | 2016-08-31 |
EP3061109B1 true EP3061109B1 (en) | 2018-02-28 |
Family
ID=52014058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14808929.5A Active EP3061109B1 (en) | 2013-12-20 | 2014-12-02 | Electric circuit breaker |
Country Status (8)
Country | Link |
---|---|
US (1) | US9953788B2 (en) |
EP (1) | EP3061109B1 (en) |
CN (1) | CN105830186B (en) |
CA (1) | CA2934372C (en) |
DE (1) | DE102013227004B4 (en) |
ES (1) | ES2671469T3 (en) |
MX (1) | MX2016008032A (en) |
WO (1) | WO2015090934A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4386798A2 (en) * | 2015-07-03 | 2024-06-19 | General Electric Technology GmbH | Drive unit for a medium voltage or high voltage circuit breaker |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3689721A (en) * | 1971-09-16 | 1972-09-05 | Westinghouse Electric Corp | Circuit breaker including ratchet and pawl spring charging means and ratchet teeth damage preventing means |
JPS59189519A (en) * | 1983-04-12 | 1984-10-27 | 富士電機株式会社 | Device for driving breaker operation energy storage unit |
US4491709A (en) * | 1983-05-09 | 1985-01-01 | Square D Company | Motor and blade control for high amperage molded case circuit breakers |
JPS61288329A (en) | 1985-06-17 | 1986-12-18 | 三菱電機株式会社 | Spring operator for breaker |
US5489755A (en) * | 1994-03-18 | 1996-02-06 | General Electric Company | Handle operator assembly for high ampere-rated circuit breaker |
DE4416106A1 (en) * | 1994-04-20 | 1995-10-26 | Siemens Ag | Clamping device for a spring accumulator |
US5883351A (en) * | 1997-05-27 | 1999-03-16 | General Electric Company | Ratcheting mechanism for industrial-rated circuit breaker |
DE102006006907A1 (en) * | 2006-02-09 | 2007-08-16 | Siemens Ag | Arrangement in particular for actuating a transport pawl and tensioning device for a spring accumulator of an electrical switch with such an arrangement |
-
2013
- 2013-12-20 DE DE102013227004.6A patent/DE102013227004B4/en active Active
-
2014
- 2014-12-02 CA CA2934372A patent/CA2934372C/en active Active
- 2014-12-02 US US15/101,010 patent/US9953788B2/en active Active
- 2014-12-02 MX MX2016008032A patent/MX2016008032A/en active IP Right Grant
- 2014-12-02 CN CN201480068971.8A patent/CN105830186B/en active Active
- 2014-12-02 WO PCT/EP2014/076199 patent/WO2015090934A1/en active Application Filing
- 2014-12-02 EP EP14808929.5A patent/EP3061109B1/en active Active
- 2014-12-02 ES ES14808929.5T patent/ES2671469T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102013227004B4 (en) | 2021-06-02 |
EP3061109A1 (en) | 2016-08-31 |
ES2671469T3 (en) | 2018-06-06 |
CA2934372A1 (en) | 2015-06-25 |
US20160300681A1 (en) | 2016-10-13 |
DE102013227004A1 (en) | 2015-06-25 |
CN105830186B (en) | 2018-12-21 |
MX2016008032A (en) | 2016-10-12 |
CA2934372C (en) | 2018-07-10 |
WO2015090934A1 (en) | 2015-06-25 |
US9953788B2 (en) | 2018-04-24 |
CN105830186A (en) | 2016-08-03 |
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