EP1336186B1 - Drive train for a displaceable contact on an electrical power breaker - Google Patents
Drive train for a displaceable contact on an electrical power breaker Download PDFInfo
- Publication number
- EP1336186B1 EP1336186B1 EP01997826A EP01997826A EP1336186B1 EP 1336186 B1 EP1336186 B1 EP 1336186B1 EP 01997826 A EP01997826 A EP 01997826A EP 01997826 A EP01997826 A EP 01997826A EP 1336186 B1 EP1336186 B1 EP 1336186B1
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- EP
- European Patent Office
- Prior art keywords
- coupling
- coupling element
- drive train
- catching
- catch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 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
- H01H71/504—Manual reset mechanisms which may be also used for manual release provided with anti-rebound means
Definitions
- the invention is in the field of electrical switches and is in the structural design of a drive train for the opening and closing operation of a movable contact a switching contact arrangement of an electrical switch apply, in which a coupling element which is disposed between the movable contact and an associated drive element and on End of the opening process is movable against a stop, a bounce device is assigned, which has a catch element and a stationary counterpart.
- the catch element In a known electrical switch, the catch element consists of a one-armed lever which is pivotally mounted on the coupling element and is under the action of a return spring. This means that the center of gravity of the catch element lies outside its pivot axis, so that the catch element can be pivoted into a catching position upon impact of the coupling element with the stopper due to the inertial force acting on its center of gravity ( US 4,468,533 ).
- the elements of the drive rods can be non-uniformly accelerated during the opening process while the catch element, which has a working surface to form a temporary operative connection with the counterpart already before striking the coupling element to the stop so from its rest position relative to the coupling element, that it does not enter the required operative connection with the counterpart.
- the coupling element abutting the stop can bounce unhindered into its position corresponding to the closed position of the switching contact arrangement, so that the risk of increased contact wear or even of welding of the contacts exists.
- the bouncing of the coupling element upon impact with the stop depends on the strength of the current to be interrupted or on the strength of the current caused by this current, acting on the elements of the drive train electrodynamic forces, which cause an accelerated movement of the elements of the drive train during the opening process .
- the acceleration caused in the case of a movable about a rotation axis coupling element, the angular acceleration
- the force acting on the center of gravity of the catch element inertial force is lower than, for example, in large short-circuit currents.
- the work surface which is perpendicular to this stop surface, is - with accurate positioning of the lever in its catching position - Pushed when bouncing the coupling element against the counterpart, so that excessive bouncing of the coupling element is prevented.
- the spring force of the return spring is adjusted to the attacking in the center of gravity of the catch element and dependent on the acceleration of the coupling element inertial force, that the abutment surface of the catch element due to the impact of the coupling element on the stop safely in contact with the counterpart arrives.
- Such a vote of the spring force is possible only for a limited range of inertial forces.
- the angular acceleration and thus the angular velocity of the catch element when hitting the stop surface on the counterpart can be so large that the catch element rebounds on the counterpart (secondary bouncing) and the Working surface can not enter into the necessary operative connection with the counterpart.
- the invention is based on the object, the bounce protection device in such a way that a rebounding of the coupling element to a closed position of the switch contact arrangement corresponding position throughout the power range of the switch, ie is reliably prevented from normal operating currents up to the largest short-circuit currents.
- this object is achieved in that the catch element is additionally associated with a retaining element on which the catch element is guided during the opening process and thereby until reaching a predetermined position the coupling element is held in its rest position relative to the coupling element.
- Such a catch element provided with a retaining element is so sure guided during the opening process, regardless of the nature and the value of the acceleration of the elements of the drive train that an uncontrolled deflection from its rest position due to a non-uniform acceleration, as for example in rapidly successive OFF-ON OFF switching occurs, is safely prevented.
- a development of the invention provides that the catch element is designed as a one-armed, hook-like lever and that the counterpart of this lever is engaged behind.
- the radial extent of the catch element may be formed so short that its construction and pivot space is not limited by another example, the drive element.
- the radial extent of the catching element may be formed shorter than the distance of the pivot axis of the catching element from the axis of rotation of the coupling element in the case of a coupling element designed as a lever arranged fixedly on a switching shaft.
- the catch element can be mounted in different positions on the coupling element.
- the catch element can also be designed so that its working surface is similar to the known drive train (US Pat. US 4,468,533 ) is pushed against the counterpart during bouncing.
- the catch element is designed as a two-armed lever, wherein the working surface is formed on the one lever arm and the center of gravity is in the region of the other lever arm.
- Such a two-armed lever can also be used in drive trains, in which the coupling element performs a rectilinear motion.
- catch element is free to pivot about a pivot angle of at least 45 ° until the formation of the temporary operative connection and the work surface extends over a bend angle of at least 20 °.
- a structurally simple embodiment of the new drive train is characterized in that the retaining element is designed as a spring.
- the spring may be designed such that the catching element is accelerated by passing through the spring in the direction of its catching position after passing through the predetermined position of the coupling element, in particular when striking the movable coupling element to the stop.
- a further preferred embodiment of the new drive train is characterized in that the retaining element is formed as a rigid, provided with a slotted guide part, which is held on the drive train, in particular on a coupling element hinged to the coupling element.
- the rigid part can also be integrally formed, for example, on the coupling member.- This can be the control of the movement of the catch element realized by a circular arc curved link guide when the rigid part is penetrated by two coupling pin, wherein a coupling pin, the coupling member with a movable contact bearing contact lever carrier and the other coupling pin coupling the coupling member with the coupling element.
- FIGS. 1 to 6 has the new drive train for a movable contact 1 a - consisting of this movable contact 1 and a stationary contact 2 associated with him - switching contact arrangement of an electrical switch, a coupling element 3, a contact carrier 4 and a coupling member 5.
- the movable contact 1 is designed as a contact lever, which is arranged pivotably about a first pivot bearing 6 on the contact carrier 4.
- the contact carrier 4 is pivotable about a second pivot bearing 7.
- the coupling element 3 is designed as a lever and arranged fixed on a trained as a switching shaft drive element 8.
- the coupling member 5 is connected by means of a first coupling bolt 33 with the contact carrier 4 and by means of a second coupling bolt 34 with the coupling element 3.
- the movable contact 1 is pressed against the stationary contact 2 at a closed position of the switching contact arrangement.
- a plurality of movable contacts can be mounted pivotably parallel to one another here in a known manner.
- the switching shaft 8 is rotatable in a known manner by means of a drive device, not shown, in a switch-9 and latched in a switch-on, which is closed in switch-on position switching shaft, the switch contact arrangement.
- the shift shaft in the direction 10 is a switch-off (see. Fig. 2 ) Approved.
- the elements of the drive train during the opening process in one of open position of the switching contact arrangement accelerates corresponding direction while the coupling element 3, which is fixedly mounted on the switching shaft 8, pivoted about the axis of rotation 11 of the switching shaft.
- the coupling element 3 beats the coupling element 3 at the end of the opening process at befindlichem in the off position shift shaft 8 at a stop 12.
- the coupling element 3 is associated with a bumper, which is a catch element 13, a catch element associated (in the FIGS. 1 to 4 Not shown) retaining element and a stationary counterpart 14 has.
- the catch element is in this case designed as a one-armed, hook-like lever and secured to the coupling element 3 so as to be pivotable about a pivot axis 15 extending parallel to the axis of rotation 11 of the control shaft 8.
- the design of the catch element 13 as a one-armed lever ensures that its center of gravity 16 has a certain radial distance 17 from the pivot axis 15.
- the catch element 13 has a rest position relative to the coupling element, in which it is at dormant coupling element (see. FIG. 1 ) under the force of a return spring 18 by means of a stop surface 19 on a coupling element passing through the bolt 20 is supported.
- the catch element 13 remains in the uniformly accelerated opening operation until the impingement of the coupling element 3 on the stop 12 due to the accelerated motion caused at its center of gravity 16 attacking inertial force in its rest position.
- the retaining element serves to keep the catch element even with non-uniformly accelerated movement of the elements of the drive train during the opening operation in the rest position relative to the coupling element (see.
- FIGS. 5 and 6 In this rest position are the center of gravity 16 of the catch element 13 and the axis of rotation 11 of the coupling element 3 on both sides of a tangent to the movement path of the pivot axis 15 surface 21.
- This rest position is also characterized in that the impact of the coupling element 3 on the stop 12th - That is, when suddenly stopping the coupling element - becoming effective inertial force is optimally implemented in the pivoting movement of the catch element 13 about its pivot axis 15.
- FIG. 3 comes by striking the coupling element 3 to the stop 12, the inertial force on the catch element 13 such effect that the catch element 13 against the rising during pivoting spring force of the return spring 18 out of its rest position by a pivot angle ⁇ 1 (see also Fig. 2 ) pivots into a catching position.
- This swivel angle ⁇ 1 should not exceed 100 ° and in the present case is about 80 °.
- the catching element 13 has a working surface 22 for forming a temporary operative connection with the counterpart 14, which extends over an arc angle ⁇ 1 of approximately 30 °.
- This arc angle ⁇ 1 can be chosen smaller with a correspondingly stronger spring force of the return spring 18 and / or a switch with a lower power range, but it should not be less than 20 ° and need not be more than 45 °.
- the catch element returns under the force of the return spring 18 in its rest position.
- the elements of the drive train are again movable in the direction of the closed position of the switching contact arrangement.
- the catch element 24 may also be arranged in its rest position on the coupling element 3 so that it pivots outwardly and thus clockwise when the coupling element 3 stops, for which purpose the counterpart 25 must be arranged accordingly. It is also characteristic of this arrangement that the center of gravity 26 is arranged such that the inertial force acting on the stop 12 when the coupling element 3 strikes - optimally in a pivoting movement of the catching element about its pivot axis 27 in the pivoting direction 28 - counter to the force of the return spring 30 , that is implemented in the direction of its catching position.
- the pivot angle ⁇ 2 of the catch element 24 is about 50 °.
- the work surface 29 extends over an arc angle ⁇ 2 of about 30 °.
- the catch element 31 additionally associated retaining element designed as a hairpin-like leg spring whose turns enclose the first coupling pin 33.
- this leg spring (cf. FIGS. 5 and 6 ) A first leg 35 a of the retaining spring on the second coupling pin 34 from.
- the first leg 35b is supported on the coupling member 5.
- the Catching element 31 associated, cantilevered legs 36a; 36b of the two torsion springs has an arcuate portion 37a; 37b on.
- the spring force of the leg spring is dimensioned so that the catch hook is securely held until it reaches a predetermined position of the coupling element in its rest position relative to the coupling element, without inhibiting the opening process.
- the retaining element is formed according to an alternative embodiment as a rigid, provided with a slotted guide 41 part 42 which is held on the coupling member 5 of the drive train.
- the part 42 in the region of a bore 43 of the second coupling pin 34 and in the region of a slot-like recess 44 of the first coupling pin 33 is penetrated.
- the arranged on the catch element pin 38 is guided in the slotted guide 41.
- the circular curved link guide crosses at the beginning of the opening process Swivel path of the catch element such that it is held against the coupling element and can not deflect prematurely uncontrolled.
- the rigid part 42 has at the end of a boom 45, which forms the lower edge of the slotted guide, a sliding surface 46 over which the arranged on the catch pin is inserted back into the slotted guide once the catch element under the force of the return spring 47 back into their Rest position is pulled on the coupling element.
- the movement of the catching element can be controlled even in externally acting on the switch vibrations or shocks and thereby bouncing of the coupling element can be reliably prevented.
Description
Die Erfindung liegt auf dem Gebiet der elektrischen Schalter und ist bei der konstruktiven Gestaltung eines Antriebsstranges für den Öffnungs- und Schließvorgang eines bewegbaren Kontaktes einer Schaltkontaktanordnung eines elektrischen Schalters anzuwenden, bei dem einem Koppelelement, das zwischen dem bewegbaren Kontakt und einem zugehörigen Antriebselement angeordnet und am Ende des Öffnungsvorganges gegen einen Anschlag bewegbar ist, eine Prellschutzeinrichtung zugeordnet ist, die ein Fangelement und ein ortsfestes Gegenstück aufweist.The invention is in the field of electrical switches and is in the structural design of a drive train for the opening and closing operation of a movable contact a switching contact arrangement of an electrical switch apply, in which a coupling element which is disposed between the movable contact and an associated drive element and on End of the opening process is movable against a stop, a bounce device is assigned, which has a catch element and a stationary counterpart.
Bei einem bekannten elektrischen Schalter besteht das Fangelement aus einem einarmigen Hebel, der schwenkbar an dem Koppelelement angeordnet ist und unter der Krafteinwirkung einer Rückstellfeder steht. Dies bedeutet, dass der Schwerpunkt des Fangelementes-außerhalb seiner Schwenkachse liegt, so dass das Fangelement beim Auftreffen des Koppelelementes auf den Anschlag aufgrund der an seinem Schwerpunkt angreifenden Trägheitskraft in eine Fangposition schwenkbar ist (
Bei Antriebssträngen dieser Art können die Elemente der Antriebsstangen beim Öffnungsvorgang ungleichförmig beschleunigt und dabei das Fangelement, das zur Bildung einer vorübergehenden Wirkverbindung mit dem Gegenstück eine Arbeitsfläche aufweist, bereits vor dem Anschlagen des Koppelelementes an dem Anschlag derart aus seiner Ruheposition gegenüber dem Koppelelement geschwenkt werden, dass es nicht die erforderliche Wirkverbindung mit dem Gegenstück eingeht. Bei fehlender Wirkverbindung kann das am Anschlag anschlagende Koppelelement ungehindert in seine der geschlossenen Stellung der Schaltkontaktanordnung entsprechende Stellung zurückprellen, so dass die Gefahr eines erhöhten Kontaktverschleißes oder sogar des Verschweißens der Kontakte besteht. Hierbei ist das Prellen des Koppelelementes beim Auftreffen auf den Anschlag abhängig von der Stärke des zu unterbrechenden Stromes bzw. von der Stärke der durch diesen Strom bewirkten, auf die Elemente des Antriebsstranges einwirkenden elektrodynamischen Kräfte, die eine beschleunigte Bewegung der Elemente des Antriebstranges beim Öffnungsvorgang bewirken. Bei normalen Betriesströmen ist die bewirkte Beschleunigung (im Falle eines um eine Drehachse bewegbaren Koppelelementes die Winkelbeschleunigung) und damit die am Schwerpunkt des Fangelementes angreifende Trägheitskraft geringer als beispielsweise bei großen Kurzschlussströmen.In drive trains of this type, the elements of the drive rods can be non-uniformly accelerated during the opening process while the catch element, which has a working surface to form a temporary operative connection with the counterpart already before striking the coupling element to the stop so from its rest position relative to the coupling element, that it does not enter the required operative connection with the counterpart. In the absence of operative connection, the coupling element abutting the stop can bounce unhindered into its position corresponding to the closed position of the switching contact arrangement, so that the risk of increased contact wear or even of welding of the contacts exists. Here, the bouncing of the coupling element upon impact with the stop depends on the strength of the current to be interrupted or on the strength of the current caused by this current, acting on the elements of the drive train electrodynamic forces, which cause an accelerated movement of the elements of the drive train during the opening process , In normal Betriesströmen the acceleration caused (in the case of a movable about a rotation axis coupling element, the angular acceleration) and thus the force acting on the center of gravity of the catch element inertial force is lower than, for example, in large short-circuit currents.
Bei dem erwähnten bekannten Schalter (
Ausgehend von einem Antriebsstrang mit den Merkmalen des Oberbegriffes des Anspruches 1 (
Gemäß der Erfindung wird diese Aufgabe dadurch gelöst, dass dem Fangelement zusätzlich ein Rückhalte-Element zugeordnet ist, an dem das Fangelement während des Öffnungsvorganges geführt und dabei bis zum Erreichen einer vorgegebenen Stellung des Koppelelementes in seiner Ruhestellung gegenüber dem Koppelelement gehalten ist.According to the invention this object is achieved in that the catch element is additionally associated with a retaining element on which the catch element is guided during the opening process and thereby until reaching a predetermined position the coupling element is held in its rest position relative to the coupling element.
Ein derartig mit einem Rückhalte-Element versehenes Fangelement ist beim Öffnungsvorgang unabhängig von der Art und dem Wert der Beschleunigung der Elemente des Antriebsstranges derart sicher geführt, dass ein unkontrolliertes Auslenken aus seiner Ruhestellung aufgrund einer ungleichförmigen Beschleunigung, wie sie beispielsweise bei schnell aufeinanderfolgenden AUS-EIN-AUS-Schaltvorgängen auftritt, sicher verhindert ist.Such a catch element provided with a retaining element is so sure guided during the opening process, regardless of the nature and the value of the acceleration of the elements of the drive train that an uncontrolled deflection from its rest position due to a non-uniform acceleration, as for example in rapidly successive OFF-ON OFF switching occurs, is safely prevented.
Eine Weiterbildung der Erfindung sieht vor, dass das Fangelement als einarmiger, hakenartiger Hebel ausgebildet ist und dass das Gegenstück von diesem Hebel hintergreifbar ist.A development of the invention provides that the catch element is designed as a one-armed, hook-like lever and that the counterpart of this lever is engaged behind.
Bei einer derartige Ausbildung, bei der die Arbeitsfläche beim Prellen des Koppelelementes gegen das Gegenstück gezogen wird, kann die radiale Ausdehnung des Fangelementes so kurz ausgebildet sein, dass sein Bau- und Schwenkraum nicht durch ein anderes beispielsweise das Antriebselement begrenzt ist. Insbesondere kann die radiale Ausdehnung des Fangelementes bei einem als auf einer Schaltwelle fest angeordneten Hebel ausgebildeten Koppelelement kürzer als der Abstand der Schwenkachse des Fangelementes von der Drehachse des Koppelelementes ausgebildet sein. Das Fangelement kann in unterschiedlichen Positionen an dem Koppelelement angebracht werden. - Eine derartige Prellschutzeinrichtung ist daher mit Vorteil in Antriebssträngen anwendbar, bei denen für die Prellschutzeinrichtung nur ein geringer Bauraum zur Verfügung steht. Sie ist auch in Antriebssträngen anwendbar, bei denen das Koppelelement eine geradlinige Bewegung ausführt.In such a design in which the work surface is pulled when bouncing the coupling element against the counterpart, the radial extent of the catch element may be formed so short that its construction and pivot space is not limited by another example, the drive element. In particular, the radial extent of the catching element may be formed shorter than the distance of the pivot axis of the catching element from the axis of rotation of the coupling element in the case of a coupling element designed as a lever arranged fixedly on a switching shaft. The catch element can be mounted in different positions on the coupling element. Such a bumper device is therefore advantageously applicable to drive trains in which only a small space is available for the bumper device. It is also applicable to drive trains in which the coupling element performs a rectilinear motion.
Das Fangelement kann auch so ausgebildet sein, dass seine Arbeitsfläche ähnlich wie bei dem bekannten Antriebsstrang (
Von Vorteil ist es, wenn das Fangelement bis zur Bildung der vorübergehenden Wirkverbindung um einen Schwenkwinkel von wenigstens 45° frei schwenkbar ist und sich die Arbeitsfläche über einen Bogenwinkel von wenigstens 20° erstreckt.It is advantageous if the catch element is free to pivot about a pivot angle of at least 45 ° until the formation of the temporary operative connection and the work surface extends over a bend angle of at least 20 °.
Bei einer derartigen Ausgestaltung kommt es zu einem Fangen, ohne dass das Fangelement gegen einen Anschlag läuft und demzufolge selber nicht zurückprellen kann. Dies wird dadurch gewährleistet, dass zum einen das Fangelement über einen größeren als den bisher bekannten Schwenkwinkel frei schwenkbar ist und dass zum anderen sich die Arbeitsfläche über einen relativ großen Bogenwinkel erstreckt. Hierdurch kann das Fangelement bei hohen Kurzschlussströmen über einen größeren Schwenkwinkel als beispielsweise bei normalen Betriebsströmen bis in seine Fangposition schwenken. In jedem Fall wird das Fangelement durch ein Zusammenwirken der Federkraft der Rückstellfeder, die beim Schwenken des Fangelementes ansteigt, und der Reibungskraft, die beim noch während der Schwenkbewegung des Fangelementes einsetzenden Prellen des Koppelelementes zwischen Arbeitsfläche und Gegenstück wirkt, sicher in seiner Fangposition angehalten.In such a configuration, it comes to a catch without the catch element runs against a stop and therefore can not rebound itself. This is ensured by the fact that on the one hand, the catch element over a larger than the previously known pivot angle is free to pivot and that on the other hand, the work surface extends over a relatively large arc angle. This allows the catch element to pivot at high short-circuit currents over a larger pivot angle than, for example, in normal operating currents up to its catching position. In any case, the catching element is securely stopped in its catching position by an interaction of the spring force of the return spring, which increases during pivoting of the catching element, and the frictional force, which acts between the working surface and the counterpart when the coupling element is still bouncing during the pivoting movement of the catching element.
Eine konstruktiv einfache Ausführungsform des neuen Antriebsstranges ist dadurch gekennzeichnet, dass das Rückhalte-Element als Feder ausgebildet ist. - Hierbei kann die Feder derart gestaltet sein, dass das Fangelement nach Durchlaufen der vorgegebenen Stellung des Koppelelementes, insbesondere beim Anschlagen des bewegbaren Koppelelementes an dem Anschlag, durch die Feder in Richtung seiner Fangposition beschleunigt wird.A structurally simple embodiment of the new drive train is characterized in that the retaining element is designed as a spring. - Here, the spring may be designed such that the catching element is accelerated by passing through the spring in the direction of its catching position after passing through the predetermined position of the coupling element, in particular when striking the movable coupling element to the stop.
Eine weitere bevorzugte Ausführungsform des neuen Antriebsstranges zeichnet sich dadurch aus, dass das Rückhalte-Element als ein starres, mit einer Kulissenführung versehenes Teil ausgebildet ist, das an dem Antriebsstrang, insbesondere an einem an dem Koppelelement angelenkten Koppelglied, gehalten ist.- Das starre Teil kann auch einstückig beispielsweise an dem Koppelglied angeformt sein.- Hierbei lässt sich die Steuerung der Bewegung des Fangelementes durch eine kreisbogenförmig gekrümmte Kulissenführung realisieren, wenn das starre Teil von zwei Koppelbolzen durchgriffen ist, wobei der eine Koppelbolzen das Koppelglied mit einem den beweglichen Kontakt tragenden Kontakthebelträger und der andere Koppelbolzen das Koppelglied mit dem Koppelelement koppelt.A further preferred embodiment of the new drive train is characterized in that the retaining element is formed as a rigid, provided with a slotted guide part, which is held on the drive train, in particular on a coupling element hinged to the coupling element.- The rigid part can also be integrally formed, for example, on the coupling member.- This can be the control of the movement of the catch element realized by a circular arc curved link guide when the rigid part is penetrated by two coupling pin, wherein a coupling pin, the coupling member with a movable contact bearing contact lever carrier and the other coupling pin coupling the coupling member with the coupling element.
Die Erfindung wird im folgenden anhand der Zeichnung näher erläutert.The invention will be explained in more detail below with reference to the drawing.
Dabei zeigen
-
Figuren 1 bis 3 eine erste Ausführungsform eines Fangelementes, das derart an einem Koppelelement angelenkt ist, dass es entgegen dem Uhrzeigersinn in seine Fangposition schwenkbar ist, -
das Fangelement gemäß derFigur 4Figuren 1 bis 3 jedoch derart angelenkt, dass es im Uhrzeigersinn in seine Fangposition schwenkbar ist und -
eine zweite Ausführungsform des Fangelementes mit ihm zugeordnetem Rückhalte-Element.Figuren 5 bis 10
-
FIGS. 1 to 3 a first embodiment of a catch element, which is articulated on a coupling element such that it can be pivoted counterclockwise into its catching position, -
FIG. 4 the catch element according to theFIGS. 1 to 3 but hinged so that it is pivotable clockwise in its catching position and -
FIGS. 5 to 10 a second embodiment of the catch element associated with it retaining element.
Gemäß der
Gemäß
Gemäß
Gemäß
Gemäß
Gemäß der
An den bogenartigen Abschnitt 37a; 37b schließt sich ein abgewinkelter weiterer Abschnitt 39a; 39b des zweiten Schenkels derart an, dass die Federkraft der Schenkelfeder im Zeitpunkt des Anschlages des Koppelelementes 3 an dem Anschlag 12 dem Fangelement ein zusätzliches Drehmoment in seiner Schwenkrichtung vermittelt. Das Ende 40a; 40b des zweiten Schenkels ist so geformt, dass der Fanghaken in seiner Schwenkrichtung frei schwenkbar ist und dabei eine seitliche Führungsfläche für die Schenkelfeder bildet. Hierdurch ist die Schenkelfeder zugleich sicher unterhalb des Stiftes und damit in ihrer bestimmungsgemäßen Position gehalten.To the
Gemäß der
Das starre Teil 42 weist am Ende eines Auslegers 45, der die Unterkante der Kulissenführung bildet, eine Gleitfläche 46 auf, über die der an dem Fangelement angeordnete Stift wieder in die Kulissenführung eingeführt wird, sobald das Fangelement unter der Kraft der Rückstellfeder 47 wieder in ihre Ruhestellung an dem Koppelelement gezogen wird.The
Durch den neuen Antriebsstrang kann auch bei von außen auf den Schalter einwirkenden Vibrationen oder Stößen die Bewegung des Fangelementes gesteuert und dadurch ein Prellen des Koppelelementes sicher verhindert werden.Due to the new drive train, the movement of the catching element can be controlled even in externally acting on the switch vibrations or shocks and thereby bouncing of the coupling element can be reliably prevented.
Claims (6)
- Drive train for the opening and closing process for a moving contact (1) of a switching contact arrangement of an electrical switch having a coupling element (3), which is arranged between the moving contact (1) and an associated drive element (8) and can move against a stop (12) at the end of the opening process, and having a bouncing protection device which is associated with the coupling element (3),
in which the bouncing protection device has a catching element (13; 24; 31) which is arranged on the coupling element and can be pivoted by its inertia against the force of a resetting spring (18, 30) from a rest position opposite the coupling element to a catching position, and has a fixed-position opposing piece (14, 25),
characterized
in that the catching element (13; 24; 31) is additionally associated with a hold-back element (32a; 32b; 42), on which the catching element is guided during the opening process and, in the process, is held in its rest position opposite the coupling element until the coupling element (3) reaches a predetermined position. - Drive train according to claim 1,
characterized
in that the catching element (13; 24; 31) is in the form of a single-armed, hook-like lever, and in that this lever can engage behind the opposing piece (14, 25). - Drive train according to one of claims 1 or 2,
characterized
in that the hold-back element is in the form of a spring (32a; 32b). - Drive train according to claim 3,
characterized
in that, once the coupling element (3) has moved through a predetermined position, in particular when the moving coupling element strikes the stop (12), the catching element (13; 24; 31) is accelerated by the spring (32a; 32b) in the direction of its catching position. - Drive train according to one of claims 1 or 2,
characterized
in that the hold-back element is in the form of a rigid part (42), which is provided with a slotted-link guide (41) and is held on the drive train, in particular on a coupling member (5) which is hinged on the coupling element. - Drive train according to claim 5,
characterized
in that two coupling bolts (33, 34) pass through the rigid part (42), with one coupling bolt (33) coupling the coupling member (5) to a contact lever support (4) to which the moving contact (1) is fitted, and the other coupling bolt (34) coupling the coupling member (5) to the coupling element (3).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10060195 | 2000-11-24 | ||
DE10060195A DE10060195C1 (en) | 2000-11-24 | 2000-11-24 | Drive train for a movable contact of an electrical switch |
PCT/DE2001/004421 WO2002043096A1 (en) | 2000-11-24 | 2001-11-20 | Drive train for a displaceable contact on an electrical power breaker |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1336186A1 EP1336186A1 (en) | 2003-08-20 |
EP1336186B1 true EP1336186B1 (en) | 2008-02-27 |
Family
ID=7665719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01997826A Expired - Lifetime EP1336186B1 (en) | 2000-11-24 | 2001-11-20 | Drive train for a displaceable contact on an electrical power breaker |
Country Status (7)
Country | Link |
---|---|
US (1) | US6831240B2 (en) |
EP (1) | EP1336186B1 (en) |
JP (1) | JP2004515036A (en) |
CN (1) | CN1214432C (en) |
DE (2) | DE10060195C1 (en) |
HK (1) | HK1059146A1 (en) |
WO (1) | WO2002043096A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE102006048124A1 (en) * | 2006-10-06 | 2008-04-10 | Siemens Ag | Catching device for a drive train |
KR101019030B1 (en) * | 2009-03-11 | 2011-03-04 | 엘에스산전 주식회사 | Circuit braeker with rebound preventor |
US8138861B2 (en) * | 2009-05-15 | 2012-03-20 | Eaton Corporation | Inertial catch for an automatic transfer switch power contractor |
US9208962B2 (en) | 2013-11-26 | 2015-12-08 | General Electric Company | Circuit breaker including an anti-rebound system, anti-rebound system for a circuit breaker and method |
US9536694B2 (en) | 2014-12-04 | 2017-01-03 | Eaton Corporation | Electrical switching apparatus and pole shaft catch assembly therefor |
CN107481901B (en) * | 2016-06-07 | 2019-09-03 | 上海电器股份有限公司人民电器厂 | A kind of breaker open operation bounce-proof device |
FR3084517B1 (en) * | 2018-07-30 | 2021-06-04 | Schneider Electric Ind Sas | ELECTRICAL SWITCHING DEVICE WITH SEPARABLE CONTACTS |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US448533A (en) * | 1891-03-17 | Street-lam p | ||
JPS5953648B2 (en) * | 1978-08-31 | 1984-12-26 | 三菱電機株式会社 | switchgear |
JPS58131622A (en) * | 1982-01-29 | 1983-08-05 | 三菱電機株式会社 | Gas breaker |
IT1173269B (en) | 1984-02-15 | 1987-06-18 | Cge Comp Gen Elettromecc | COMBINATION OF COUPLING CONNECTION AND RELEASE DEVICE TO AVOID THE CLOSING OF THE CONTACTS OF AN AUTOMATIC SWITCH AFTER AN OPENING DUE TO SHORT CIRCUIT |
US4713503A (en) * | 1986-08-26 | 1987-12-15 | A. B. Chance Company | Three phase vacuum switch operating mechanism with anti-bounce device for interrupter contacts |
NL9101162A (en) * | 1991-07-03 | 1993-02-01 | Holec Syst & Componenten | IMPROVED DRIVE MECHANISM FOR AN ELECTRIC SWITCH, IN PARTICULAR A LOAD OR POWER SWITCH. |
DE4416091C1 (en) * | 1994-04-20 | 1995-06-22 | Siemens Ag | Circuit-breaker drive unit with lock preventing switch-shaft bouncing back |
US5912605A (en) * | 1997-11-20 | 1999-06-15 | Eaton Corporation | Circuit breaker with automatic catch to prevent rebound of blow open contact arm |
NL1008731C2 (en) * | 1998-03-27 | 1999-09-28 | Holec Holland Nv | Momentary-trigger switch. |
US6084489A (en) * | 1998-09-08 | 2000-07-04 | General Electric Company | Circuit breaker rotary contact assembly locking system |
US6160234A (en) * | 1999-04-29 | 2000-12-12 | Eaton Corporation | Reduced drag ratchet |
FR2818796B1 (en) * | 2000-12-22 | 2003-02-07 | Schneider Electric Ind Sa | CLOSING ASSISTANCE MECHANISM FOR ELECTRICAL SWITCHING APPARATUS AND DRIVE MECHANISM OF ELECTRICAL APPARATUS PROVIDED WITH SUCH AN ASSISTANCE MECHANISM |
-
2000
- 2000-11-24 DE DE10060195A patent/DE10060195C1/en not_active Expired - Fee Related
-
2001
- 2001-11-20 US US10/432,643 patent/US6831240B2/en not_active Expired - Fee Related
- 2001-11-20 DE DE50113670T patent/DE50113670D1/en not_active Expired - Fee Related
- 2001-11-20 JP JP2002544744A patent/JP2004515036A/en active Pending
- 2001-11-20 WO PCT/DE2001/004421 patent/WO2002043096A1/en active IP Right Grant
- 2001-11-20 EP EP01997826A patent/EP1336186B1/en not_active Expired - Lifetime
- 2001-11-20 CN CN01819403.6A patent/CN1214432C/en not_active Expired - Fee Related
-
2004
- 2004-03-22 HK HK04102072A patent/HK1059146A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
HK1059146A1 (en) | 2004-06-18 |
WO2002043096A1 (en) | 2002-05-30 |
DE50113670D1 (en) | 2008-04-10 |
EP1336186A1 (en) | 2003-08-20 |
US20040134764A1 (en) | 2004-07-15 |
US6831240B2 (en) | 2004-12-14 |
CN1214432C (en) | 2005-08-10 |
JP2004515036A (en) | 2004-05-20 |
DE10060195C1 (en) | 2002-07-25 |
CN1476622A (en) | 2004-02-18 |
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