EP0003352B1 - Dispositif d'entraînement pour interrupteurs - Google Patents

Dispositif d'entraînement pour interrupteurs Download PDF

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Publication number
EP0003352B1
EP0003352B1 EP19790100204 EP79100204A EP0003352B1 EP 0003352 B1 EP0003352 B1 EP 0003352B1 EP 19790100204 EP19790100204 EP 19790100204 EP 79100204 A EP79100204 A EP 79100204A EP 0003352 B1 EP0003352 B1 EP 0003352B1
Authority
EP
European Patent Office
Prior art keywords
lever
locking
rocking
levers
driving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19790100204
Other languages
German (de)
English (en)
Other versions
EP0003352A1 (fr
Inventor
Max Höckele
Werner Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG
Original Assignee
Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG filed Critical Karl Pfisterer Elektrorechnische Spezialartikel GmbH and Co KG
Publication of EP0003352A1 publication Critical patent/EP0003352A1/fr
Application granted granted Critical
Publication of EP0003352B1 publication Critical patent/EP0003352B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • 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

Definitions

  • the invention relates to a drive member and an output member having a switch drive device with two pivot levers, the pivot axes of which lie in one plane and extend parallel and which are coupled to one another at a distance from their pivot axis by at least one tensionable spring, and to a locking device, the two arranged in the plane of the pivot lever, also pivotable locking lever which alternately lock the energy of the tensioned spring to the switch pivot lever until the other pivot lever has reached a release position relative to the first-mentioned pivot lever when pivoting the spring.
  • the two pivot levers are mounted on a shaft which forms the drive element and are coupled to this shaft via a gearbox with a dead gear.
  • the dead gear of the gearbox is required here, because when the shaft rotates in one direction only one and the other of the two pivot levers may be taken along in the other direction.
  • the two springs are each designed as a helical compression spring and are each arranged on a clamping bolt, which are articulated in the region of one end of one or the other swivel lever.
  • the clamping bolts are each provided with an elongated hole, which connects the clamping bolt with the other pivoting lever and as an attachment for the helical compression spring serving bolt reaches through.
  • a shift shaft arranged coaxially with the drive shaft is provided, on which, in addition to the two pivot levers, a double-armed lever is arranged, which can be driven by drivers of one of the two pivot levers in one direction of rotation and the other in the other direction of rotation.
  • the invention has for its object to provide a switch drive device that takes up as little space as possible and in particular enables a narrow design.
  • this object is achieved according to the invention in that one pivot lever forms the drive member and the other pivot lever forms the output member and that the locking levers protrude into the pivoting path of the drive member and are moved by the latter out of their locked position into the release position.
  • Such a switch drive device has a minimal number of structurally simple individual parts and therefore not only has a simple and robust structure, but also requires little space.
  • the drive device according to the invention allows a narrow design, which contributes to the fact that only two pivot levers have to be arranged side by side.
  • the switch drive device can be used for both circuit breakers and circuit breakers, and due to its small space requirement, it is also suitable for driving switches with an insulating gas filling, which due to the high insulating ability of the insulating gas, which can be SF 6 gas, for example , have relatively small dimensions.
  • an insulating gas filling which due to the high insulating ability of the insulating gas, which can be SF 6 gas, for example , have relatively small dimensions.
  • a plurality of drive devices can be arranged close to one another, as may be necessary if, for example, a plurality of switching units are arranged close to one another in the housing of a switch filled with insulating gas.
  • the two pivot levers preferably have a common pivot axis in order to further reduce the outlay and the space requirement.
  • the one pivot lever is formed at least in the section lying next to the other pivot lever by two spaced-apart arms between which the other pivot lever lies, because this enables the power transmission between the pivot levers and the tensionable springs to be carried out in an operationally reliable manner with the least possible design effort.
  • the tensionable springs are designed as compression springs, since this simplifies the adaptation of the spring characteristics to the requirements.
  • Such an adaptation and change of the spring characteristic is particularly simple when the compression springs are designed as plate spring assemblies, because plate springs of different characteristics can then be combined. For example, you can achieve a very high initial force to achieve a high acceleration at the beginning of the switching process by means of a corresponding spring characteristic.
  • Another advantage of compression springs is that the design effort for the power transmission and thus the space requirement can be kept very low. This applies in particular when the drive device is designed according to claim 5.
  • an embodiment of the drive device according to the invention is advantageous.
  • a switch 1 which in the exemplary embodiment is an SF 6 -insulated medium voltage switch, is assigned three switch drive devices 2 of the same design, since the housing of the switch contains three three-phase switches, which are each composed of three single-phase switching units 3. As particularly shown in FIG. 1, the switch drive devices 2 are mounted next to one another on the cover of the switch housing.
  • a rectangular base plate 4 carries two side plates 5 which are perpendicular to it and are arranged in parallel and at a distance from one another with an essentially rectangular configuration.
  • the two ends of a pivot axis 6 lying parallel to the base plate 4 are fixed, on which a drive lever designated as a whole as 7 and a drive lever designated as a whole as 8 are pivotably mounted.
  • the output lever 8, as shown in FIG. 5, is formed by two upright flat rails 8 'which are parallel to one another and are at a distance from one another which is caused by two eyebolts 9, the eye-shaped head of which lies between the two flat rails 8' and can be pivoted is mounted on a pin 10 each.
  • the two pins 10, which engage in holes in the flat rails 8 ', are, as shown in FIG. 3, arranged approximately diametrically with respect to the pivot axis 6 at the same distance from it.
  • the two eyebolts 9 are each screwed to one end of a sleeve 11 provided with an internal thread, at the other end of which a spring plate 13 is fastened by means of a screw 12.
  • a spring plate 13 is fastened by means of a screw 12.
  • At this spring plate lies one end of a plate spring assembly 14 or 14 'carried by the sleeve 11, the other end of which rests on the flat surface of a longitudinally displaceable pressure piece 15 which is located on the sleeve 11 and which faces the drive lever 7 and the output lever 8 Side has a cylindrical lateral surface, as shown in FIGS. 3 and 4.
  • the pressure pieces 15 rest in the two end positions of the levers 7 and 8 and during the tensioning process of the associated plate spring assembly on the two flat rails 7 'of the drive lever 7, which have a groove-like recess where the pressure pieces 15 rest have a concave-cylindrical profile, the radius of curvature of which is adapted to that of the convex-cylindrical surface of the pressure pieces 15.
  • these recesses are offset somewhat further compared to the associated pin 10 to the adjacent free lever end.
  • a first locking lever 16 is provided, which is pivotably mounted on a bolt 17 above the end section of the output lever 8 which is extended beyond the pivot axis 6 and has an axis parallel to the pivot axis.
  • the ends of this bolt lie in holes in the side plates 5.
  • the end of the first locking lever 16 facing the drive lever 7, as shown in FIG. 1, is designed as a fork in which a roller 19 projecting beyond the fork ends is rotatable on a pin lying parallel to the pivot axis 6 20 is stored.
  • the length of the pin 20 and the dimension of the fork-shaped end in the longitudinal direction of this pin are smaller than the distance between the flat rails 7 'of the drive lever 7.
  • the roller 19 rests on the top of the two flat rails 8' of the output lever 8.
  • the longitudinal axis defined by the pivot axis of the first locking lever 16 and the longitudinal axis of its roller 19 encloses an angle with the longitudinal axis of the drive lever 8 which is somewhat less than 90 °. So that the locking lever does not pivot counterclockwise under the force exerted on it by the output lever when looking in accordance with FIG. 3, a stop pin 21 mounted in the side plates 5 is provided, on which the end portion of the locking lever 16 facing away from the roller 19 stops.
  • An identically designed, second locking lever 23 is pivotally mounted on a bolt 24 which is arranged such that in the second end position of the output lever 8, in which it is pivoted downward into a position which is the position of the drive lever shown in FIG. 3 corresponds, the longitudinal axis of the output lever 8 with that of the second locking lever 23 encloses an angle which is slightly less than 90 °. In this position, the second locking lever 23 bears against a stop pin 21 ', which prevents the mentioned angle from being reduced.
  • the output lever 8 is first held in the end position shown in FIG. 3 by the first locking lever 16.
  • the pivoting movement of the drive lever 7 counterclockwise therefore causes an increase in the distance between the pressure piece 15 of the plate spring assembly 14 shown on the left in FIG. 3 and the pin 10, which is equivalent to a displacement of the pressure piece 15 on the sleeve 11 against the spring plate 13 , whereby the plate spring assembly 14 is tensioned.
  • the sleeve 11 pivots counterclockwise around the pin 10.
  • the sleeve 11 of the spring assembly 14 ' will therefore initially maintain its position.
  • the position of the second locking lever 23 remains unchanged during the tensioning process, since its role rests on the output lever 8.
  • the top of the flat rails 7 'of the drive lever 7 approaches the driving pin 22 of the first locking lever 16.
  • a groove-shaped recess 25 with a concave-cylindrical profile in the two flat rails 7 opposite the recesses for the contact of the pressure pieces 15 is used in a further pivoting of the drive lever 7 counterclockwise exerted a force on the driver pin 22 which pivots it beyond the pivot position in which its longitudinal axis is perpendicular to the longitudinal axis of the output lever 8.
  • the first locking lever 16 assumes a position that corresponds to that of the second locking lever 23 in FIG. 3.
  • the latter is pivoted clockwise under the action of a return spring 26 into the position corresponding to the position of the first locking lever 16 shown in FIG. 3 and while it is resting on its stop pin while the output lever 8 is moving into its other end position.
  • the first locking lever 16 also has a corresponding return spring 26.
  • the springs 26 are fastened on the one hand to the upper end of the associated locking lever and on the other hand to two pins 27 which connect the two side plates 5 to one another.
  • the drive lever 7 now at the top must be pivoted down again into the position shown in FIG. 3.
  • the output lever 8 is blocked by the second locking lever 23, so that the two flat rails 7 'move the pressure piece 15 of the plate spring assembly 14' shown in FIG. 3 on the right against the free end of its sleeve 11 and thereby tension this plate spring assembly 14 '.
  • the two flat rails 7 ' each with a groove-shaped recess 25', come into contact with the driver pin 22 of the second locking lever 23.
  • This is pivoted counterclockwise and releases the output lever 8 after the dead center position has been exceeded.
  • the spring 26 pivots the first locking lever 16 back into the locking position.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (10)

1. Dispositif d'entraînement d'interruption comportant un organe menant et un organe mené et pourvus de deux leviers pivotantes (7,8) dont les axes de rotation (6) sont situés dans un plan et sont orientés parallèlement et qui sont accouplés l'un avec l'autre, à une certaine distance de leur axe de pivotement, respectivement par au moins un ressort (14, 14') pouvant être mis sous tension, le dispositif comportant un mécanisme de verrouillage qui comporte deux leviers de verrouillage (16, 23) disposés dans le plan des leviers pivotants (7, 8) pouvant également tourner et qui verrouillent alternativement le levier pivotant (8) transmettant l'énergie du ressort (14) mis sous tension à l'interrupteur jusqu'à ce que l'autre levier pivotant (7) ait atteint une position de déclenchement lors de son pivotement, nécessaire pour la mise sous tension du ressort (14), par rapport au levier pivotant (8) cité en premier, caractérisé en ce qu'un des leviers pivotants (7) constitue l'organe menant et l'autre levier pivotant (8) l'organe mené et en ce que les leviers de verrouillage (16, 23) pénètrent dans le trajet de pivotement de l'organe menant et sont entraînés par celui-ci de leur position de blocage jusque dans la position de libération.
2. Dispositif selon la revendication 1, caractérisé en ce que les deux leviers pivotants (7, 8) comportent un axe de pivotement commun (6).
3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce qu'un des leviers pivotants (7) est constitué, au moins dans la zone située à côté de l'autre levier pivotant (8), par deux bras (7') placés à une certaine distance l'un à côté de l'autre et entre lesquels est disposé l'autre levier pivotant (8).
4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les ressorts pouvant être mis sous tension sont chacun agencés sous la forme d'un ressort de pression, notamment sous la forme d'un paquet de rondelles élastiques (14, 14').
5. Dispositif selon l'une des revendications 3 ou 4, caractérisé en ce qu'une des extrémités de chaque ressort de pression (14, 14') peut s'appuyer par l'intermédiaire d'un poussoir (15) contre une partie constituée par deux bras (8') placés un à côté de l'autre, du levier mené (8) tandis que l'autre extrémité peut s'appuyer contre une rondelle élastique qui est disposée à une extrémité d'un boulon (9, 11) portant le ressort de pression et dont l'autre extrémité, s'accrochant dans le poussoir, est reliée de façon articulée au levier mené (8).
6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que chaque levier de verrouillage existant (16, 23) peut pivoter, à partir de sa position de verrouillage, définie par une butée (21, 21'), en opposition à la force d'un ressort de rappel (26) et à l'aide du levier d'entraînement (7) en passant par la position neutre dans laquelle l'axe longitudinal, défini par l'axe de pivotement (17, 24) et la position d'application sur le levier mené (8) est orienté perpendiculairement à l'axe longitudinal du levier mené, jusque dans la position de libération où l'axe longitudinal du levier de verrouillage (16, 23) fait un angle aigu avec l'axe longitudinal du levier mené (8).
7. Dispositif selon l'une quelconque des revendications 3 à 6, caractérisé en ce que l'extrémité de chaque levier de verrouillage (16, 23) que s'applique contre le levier mené (8) est constituée par un galet (19) et en ce que sa largeur, mesurée dans sa direction axiale, est plus petite que la distance d'espacement des deux bras (7') du levier menant (7).
8. Dispositif selon la revendication 7, caractérisé en ce que chaque levier de verrouillage (16, 23) comporte un entraîneur (22) faisant saillie latéralement et pénétrant dans le trajet de pivotement du levier menant (7).
9. Dispositif selon la revendication 8, caractérisé en ce que la surface du levier menant (7) contre laquelle s'appuie l'entraîneur (22) a, lorsqu'on l'observe à partir dudit entraîneur, une forme concave.
10. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que les deux leviers pivotants (7, 8), au moins sur une partie de leur longueur, ainsi que les leviers de verrouillage (16, 23) et les ressorts pouvant être tendus (10) sont placés entre deux plaques parallèles (5) qui sont pourvues de trous destinés à recevoir les extrémités de l'axe de pivotement (6), des leviers pivotants (7, 8) et des axes de pivotement (17, 24) des leviers de verrouillage (16,.23).
EP19790100204 1978-01-28 1979-01-24 Dispositif d'entraînement pour interrupteurs Expired EP0003352B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2803787 1978-01-28
DE19782803787 DE2803787B2 (de) 1978-01-28 1978-01-28 Schalter-Antriebsvorrichtung

Publications (2)

Publication Number Publication Date
EP0003352A1 EP0003352A1 (fr) 1979-08-08
EP0003352B1 true EP0003352B1 (fr) 1981-11-25

Family

ID=6030650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790100204 Expired EP0003352B1 (fr) 1978-01-28 1979-01-24 Dispositif d'entraînement pour interrupteurs

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EP (1) EP0003352B1 (fr)
DE (1) DE2803787B2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3313432C1 (de) * 1983-04-13 1984-07-12 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Schalterantriebsvorrichtung mit einem manuell betätigbaren Antriebsglied
US4587390A (en) * 1985-01-07 1986-05-06 Golden Gate Switchboard Co. Vacuum circuit breaker
DE4330715A1 (de) * 1993-09-10 1995-03-16 Kloeckner Moeller Gmbh Elektrischer Schalter mit Kippsprungwerk

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE759194C (de) * 1937-12-01 1953-05-26 Siemens Schuckertwerke A G Freiausloesekupplung fuer elektrische Selbstschalter
CH427961A (de) * 1963-04-09 1967-01-15 Sachsenwerk Licht & Kraft Ag Federantrieb an einem elektrischen Schaltgerät
DE1665584A1 (de) * 1964-03-28 1971-03-18 Siemens Ag Sprungwerk fuer Kippschalter
DE1515563B2 (de) * 1965-06-18 1972-02-17 Voigt & Haeffner Gmbh, 6000 Frankfurt Vorrichtung zum sprunghaften einschalten eines elektrischen schalters
DE1615866A1 (de) * 1967-02-01 1970-05-27 Concordia Sprecher Schalt Antrieb zum schnellen Ein- und Ausschalten von elektrischen Schaltern
DE2158978A1 (de) * 1971-11-27 1973-05-30 Calor Emag Elektrizitaets Ag Antrieb fuer elektrische schalter

Also Published As

Publication number Publication date
EP0003352A1 (fr) 1979-08-08
DE2803787A1 (de) 1979-08-02
DE2803787B2 (de) 1979-11-22
DE2803787C3 (fr) 1984-08-02

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