EP0026416B2 - Mécanisme de commande pour disjoncteur - Google Patents

Mécanisme de commande pour disjoncteur Download PDF

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Publication number
EP0026416B2
EP0026416B2 EP80105660A EP80105660A EP0026416B2 EP 0026416 B2 EP0026416 B2 EP 0026416B2 EP 80105660 A EP80105660 A EP 80105660A EP 80105660 A EP80105660 A EP 80105660A EP 0026416 B2 EP0026416 B2 EP 0026416B2
Authority
EP
European Patent Office
Prior art keywords
lever
contact
release
arm
ratchet
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
EP80105660A
Other languages
German (de)
English (en)
Other versions
EP0026416A1 (fr
EP0026416B1 (fr
Inventor
Günter Ing. grad Böker
Georg Ing. Grad Schedler
Dieter Kropp
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6081835&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0026416(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to AT80105660T priority Critical patent/ATE3091T1/de
Publication of EP0026416A1 publication Critical patent/EP0026416A1/fr
Application granted granted Critical
Publication of EP0026416B1 publication Critical patent/EP0026416B1/fr
Publication of EP0026416B2 publication Critical patent/EP0026416B2/fr
Expired legal-status Critical Current

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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
    • H01H71/1009—Interconnected mechanisms
    • H01H71/1027—Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole
    • 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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Definitions

  • the invention relates to a switching mechanism for circuit breakers, in which an operating knob acts via a ratchet lever on a loosely pivotable about a fixed axis and acts in the closed contact position on the ratchet lever and on the fixed contact piece, on which a contact spring acts, the point of engagement between the axis of the contact lever and the latching point and in which switching mechanism a release lever is provided.
  • Such a switching mechanism is known from DE-U-7 500 060.
  • the control knob acts on the latch lever via an intermediate bracket, which in turn is mounted on the contact lever.
  • a release lever is also pivotally mounted, which forms a latching point with the latch lever, so that the levers mentioned are mutually supported in the form of a triangle in the tensioned state.
  • the mounting of the ratchet lever and release lever on the contact lever has considerable disadvantages. When opening the contacts, these additional levers have to be moved, so that considerable masses have to be accelerated and the switch-off time is extended.
  • the contact lifter must be guided laterally in an elongated hole on the fixed axis, so that a reproducible unlatching point is maintained via the various pivot points of the levers.
  • a switching mechanism in which a spring-mounted contact lever interacts with a manual control knob via several hinged tabs.
  • One of these tabs holds a pin that is longitudinally guided in a slot, which in turn can be hooked behind a rotatably mounted pawl and thereby latches the entire mechanism.
  • the double-armed contact lever is slidably guided on a fixed axis and can be swiveled around it.
  • a spring engages the contact lever, which in the switched-on position tensions the entire mechanism and generates the contact pressure.
  • This switching mechanism is disadvantageous in that an elaborate latching mechanism with several joints is required to achieve low unlatching forces.
  • the object of the invention is to improve the switching mechanism mentioned at the outset in such a way that it requires the least possible unlatching forces with the least amount of components and achieves short switch-off times. It should also be designed so that a particularly small construction is possible.
  • the ratchet lever is articulated on the control toggle and is supported with its free end in the contact closing position on the free-floating contact lever which itself serves as part of the latch, and in that the release lever is pivotally mounted about a separately arranged fixed axis, which acts on the one hand on the latch lever and on the other hand can be influenced by the latter to accelerate its rotary movement when the contact lever is switched off.
  • 1-4 consists of a contact lever 1, which forms at one end a contact piece 2, which cooperates with a fixed contact piece 3. At the other end, the contact lever is provided with a latching pin 4 which interacts with a latch lever 5.
  • the free end 5a of the latch lever 5 articulated on a manual control knob 6 is supported on the latching pin 4 of the contact lever 1 in the switched-on position of the switching mechanism.
  • An angled extension 5b encompasses the latching pin and can be influenced by a lever arm 7b of a release lever 7.
  • the release lever pivotable about a fixed axis 8 has a further lever arm 7a, on which the latching pin 4 can act.
  • the contact lever 1 has a notch 13 in the middle between the contact piece 2 and the latching pin 4, which is located in the region of a fixed axis 14.
  • a contact spring 16 supported on the housing 15 of the switch acts on the contact lever. The point of engagement of the contract spring 16 on the contact lever lies between the latching pin 4 and the notch 13.
  • the contact force is determined by the ratio of the lever arms which are formed by the point of application of the contact spring to the latching pin and by the contact contact point to the latching pin.
  • the distance between the axis 14 and the base of the notch 13 is a measure of the burn-up reserve of the switch.
  • the pawl lever 5 is clamped with the control knob 6, which can be pivoted about a fixed axis 6a, so that the contact lever is held in the switch-on position by the end 5a of the pawl lever 5 which is supported on the latching pin 4.
  • the short-circuit or overcurrent is switched off by the plunger 11 of the magnetic tripping devices or by the bimetal strip 10.
  • the plunger 11 and the bimetal strip 10 act in the direction of the arrows 11a a and 10a on the slide 9 and move it in the direction of the arrow 9a, see above that it strikes the lever arm 7c of the release lever 7 with an edge 9b and rotates it counterclockwise about the axis 8.
  • the lever arm 7b strikes the angled extension 5b of the ratchet lever 5 and lifts it so far that the end 5a releases the latching pin 4 of the contact lever 1.
  • the trigger lever reaches the position shown in Fig. 2.
  • the contact lever 1 When the latching pin 4 is released, the contact lever 1 first rotates under the action of the contact spring 16 about its contact point until the base of the notch 13 comes into contact with the axis 14, which now becomes the pivot axis when the contact lever moves further. Before the release lever 7 has reached the bearing shown in FIG. 2, the latching pin 4 strikes against the lever arm 7a and thereby accelerates the rotary movement of the release lever. During the switch-off movement of the contact lever 1, the control knob 6 also goes into the switch-off position shown in FIG. 3 together with the latch lever 5. The control knob 6 is under the action of a spring, not shown, which drives it into the position shown in FIG. 3. A spring, also not shown, acting on the pawl lever 5 presses it with the developed extension 5b against the edge 7'b of the lever arm 7b. As a result, the end 5a of the pawl lever 5 again engages over the latching pin 4.
  • the mechanism is switched on in such a way that the manual control knob 6 is pivoted counterclockwise, as a result of which the pawl lever 5 acts on the contact lever 1 and in turn pivots it about the axis 14.
  • the contact lever 1 pivots about the axis 14 until it reaches the position shown in Fig. 4, i. H. touches the fixed contact piece 3 with its movable contact piece 2.
  • the contact spring 16 is tensioned.
  • the contact lever lifts off the axis 14 when the hand control toggle is pivoted further counterclockwise and then rotates around the contact contact point during this movement.
  • the final switch-on position is reached when the manual control knob 6, together with the ratchet lever 5, reaches the dead center position.
  • a contact lever 21 with an elongated hole 21c is mounted on a fixed axis 14.
  • the contact lever is fork-shaped at one end by means of a long prong 21 b and a short prong 21 a and is latched to the latter by a ratchet lever 25 designed as a wire bracket.
  • a lever arm 27a of a release lever 27 pivotable about a fixed axis 8 acts on this latched end of the wire bracket.
  • a second lever arm 27b of the release lever lies in the effective range of a plunger 11 of a magnetic release member 12.
  • the contact lever 21 in turn has an angled portion 21d which acts on the rear side of the lever arm 27a during the opening movement.
  • a stop 21f of the contact lever located in the region of the end of the lever arm 27b is also detected by the plunger 11 of the triggering element during the short-circuit shutdown, so that an impact is exerted on the contact lever. Otherwise, the motion sequences are similar to the arrangement according to FIGS. 1-4.
  • the mechanism according to the invention is particularly advantageous in that, apart from the small number of its components and its small space requirement, because of the separation of the movable contact lever, it allows a connection to the thermal release element with variable bimetallic elements. In addition, because of the latching at one end of the contact lever, the unlatching forces are reduced to a minimum.
  • the possibility of coupling with neighboring switches is also advantageous, so that multipole switches can be created in a simple manner.
  • the release lever has jaws 17 reaching up to the switch walls, the end faces of which have receiving holes 17a for coupling pins or recesses 17b.
  • the coupling pin of a switch engages through openings in the housing in the recess of the adjacent trigger lever jaw and thus produces the coupling.

Landscapes

  • Breakers (AREA)

Claims (6)

1. Mécanisme de commande pour disjoncteur dans lequel un doigt de commande (6) agit par l'intermédiaire d'un levier à cliquet (5; 25) sur un levier de contact (1; 21) qui peut pivoter fou autour d'un axe fixe (14) et prend appui, dans la position de fermeture du contact, sur le levier à cliquet (5; 25) et sur une pièce de contact fixe (3) et sur lequel agit un ressort de contact (16) dont le point d'action se trouve entre l'axe (14) du levier de contact (1; 21) et la zone d'encliquetage (4, 5a), et mécanisme de commande dans lequel un levier de dégagement (7) est prévu, caractérisé en ce que le levier à cliquet (5; 25) s'articule sur le doigt de commande (6) et prend appui, par son extrémité libre, dans la position de fermeture du contact, sur le levier de contact (1; 21) qui sert lui-même de pièce d'encliquetage et est non assujetti et en ce que le levier de dégagement (7) est monté sur palier de manière à pouvoir pivoter autour d'un axe (8) fixe monté à part et, d'une part, agit sur le levier à cliquet (5; 25) et, d'autre part, pour l'accélération de son mouvement de rotation lors du mouvement de déclenchement du levier de contact (1; 21) subit l'action de celui- ci.
2. Mécanisme de commande selon la revendication 1, caractérisé en ce que le levier de contact (1) comporté, à l'une de ses extrémités, un ergot d'enclenchement (4) qui, d'une part, sert d'appui au levier à cliquet (5) et, d'autre part, est entouré par un prolongement coudé (5b) du levier à cliquet (5) et en ce que son autre extrémité constitue la partie mobile (2) du contact tandis que l'axe fixe (14) se trouve au niveau d'un évidement (13) ménagé dans le levier de contact (1) à peu près au milieu de la distance comprise entre la partie mobile (2) du contact et l'ergot d'enclenchement (4).
3. Mécanisme de commande selon l'une des revendications 1 ou 2, caractérisé en ce que le levier de dégagement à trois branches (7), qui peut tourner sous l'action de l'organe de dégagement à commande magnétique et thermique (12, 10), agit par l'une de ses branches (7b) sur le prolongement coudé (5b) du levier à cliquet (5), se trouve, au niveau de sa deuxième branche (7a), dans la zone de pivotement de l'extrémité du livier de contact (1) qui porte l'ergot d'enclenchement (4) et est soumis, au niveau de sa troisième branche (7c), à l'action des organes de dégagement, directement ou par l'intermédiaire d'une pièce coulissante 9.
4. Mécanisme de commande selon la revendication 3, caractérisé en ce que le levier de dégagement 7 comporte, sur sa troisième branche (7c), des dispositifs de réception pour des éléments d'accouplement.
5. Mécanisme de commande selon l'une des revendications 3 ou 4, caractérisé en ce que le levier de dégagement (7), de préférence en matière plastique, comporte, sur sa troisième branche (7c), des joues qui vont jusqu'aux parois du disjoncteur et dont l'une comporte, à sa surface extérieure un trou de logement (17a), pour une cheville d'accouplement et l'autre, à sa surface extérieure, un évidement (17b) plus grand que le trou de logement.
6. Mécanisme de commande selon la revendication 1, caractérisé en ce qu'on utilise come levier à cliquet (25) un étrier en fil métallique qui est en prise avec la petite branche (21 a) du levier (21) dont l'extrémité a la forme d'une fourche et est maintenue en prise avec le levier de contact au niveau de la grande branche (21 b), en ce que le levier de contact (21) est monté sur l'axe (14) qui passe dans un trou oblong (21c) ménagé dans le levier et se met en prise, par une de ses parties repliée (21 d), avec l'une des branches (27a) du levier de dégagement (27) qui sert en même temps au dégagement du levier à cliquet (25) et en ce que la liaison avec les organes de dégagement et l'accouplement pour obtenir une multipolarité sont assurée par une deuxième branche (27b) du levier de dégagement (27) qui peut se déplacer, en même temps que la surface de butée (21f) du levier de contact (21), sous l'action du poussoir (11) d'un organe de dégagement magnétique (12).
EP80105660A 1979-09-26 1980-09-20 Mécanisme de commande pour disjoncteur Expired EP0026416B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80105660T ATE3091T1 (de) 1979-09-26 1980-09-20 Schaltmechanismus fuer leitungsschutzschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2938858 1979-09-26
DE2938858A DE2938858C2 (de) 1979-09-26 1979-09-26 Schaltmechanismus für einen Leitungsschutzschalter

Publications (3)

Publication Number Publication Date
EP0026416A1 EP0026416A1 (fr) 1981-04-08
EP0026416B1 EP0026416B1 (fr) 1983-04-13
EP0026416B2 true EP0026416B2 (fr) 1986-02-19

Family

ID=6081835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80105660A Expired EP0026416B2 (fr) 1979-09-26 1980-09-20 Mécanisme de commande pour disjoncteur

Country Status (3)

Country Link
EP (1) EP0026416B2 (fr)
AT (1) ATE3091T1 (fr)
DE (1) DE2938858C2 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3119165C2 (de) * 1981-05-14 1986-05-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Selbstschalter als Baueinheit aus einem Leitungsschutzschalter sowie Hilfs- und Signalschaltern
DE3200325C2 (de) * 1982-01-08 1986-08-21 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Mechanismus für einen Selbstschalter
US4628288A (en) * 1984-05-15 1986-12-09 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
DE8500461U1 (de) * 1985-01-10 1986-02-06 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verklinkungsanordnung eines Leitungsschutzschalters
US4743878A (en) * 1985-05-01 1988-05-10 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
PT82331B (pt) * 1985-05-17 1992-06-30 Licentia Gmbh Mecanismo de comutacao para um interruptor de proteccao
DE3517748C1 (de) * 1985-05-17 1986-02-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus für einen Leitungsschutzschalter
DE3619240A1 (de) * 1986-06-07 1987-12-10 Kloeckner Moeller Elektrizit Leitungsschutzschalter mit einer eine blaseinrichtung bildenden kontaktanordnung
DE3619242C2 (de) * 1986-06-07 1994-07-21 Kloeckner Moeller Gmbh Schaltmechanismus für einen Leitungsschutzschalter
FR2614467A1 (fr) * 1987-04-21 1988-10-28 Telemecanique Electrique Appareil interrupteur de protection a mecanisme de declenchement simplifie
GB8804645D0 (en) * 1988-02-27 1988-03-30 Delta Electrical Holdings Circuit breaker
DE3917326A1 (de) * 1989-05-27 1990-11-29 Licentia Gmbh Schaltmechanismus fuer einen leitungsschutzschalter
IT218929Z2 (it) * 1989-10-31 1992-11-10 Abb Elettrocondutture Spa Interruttore automatico miniaturizzato a struttura modulare per impianti elettrici civili industriali e simili
DE4040301A1 (de) * 1990-12-17 1992-07-02 Geyer Gmbh & Co Christian Schaltmechanismus
DE19735408B4 (de) * 1997-08-14 2008-04-10 Siemens Ag Schaltmechanismus für einen Schutzschalter
DE112014007136T5 (de) * 2014-11-05 2017-08-03 General Electric Company Schutzschalter mit einem potentialfreien bewegbaren Kontakt
GB2569669B (en) * 2017-12-22 2022-02-09 Eaton Ind Austria Gmbh Self-compensating mechanism for circuit breaker

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1915104A1 (de) * 1969-03-25 1970-10-01 Bbc Brown Boveri & Cie Selbstschalter
DE2336222A1 (de) * 1973-07-17 1975-01-30 Baco Const Elect Schaltmechanismus fuer selbstschalter
DE2544470A1 (de) * 1975-10-04 1977-04-07 Geyer Fa Christian Mechanismus fuer selbstschalter
FR2331879A1 (fr) * 1975-11-13 1977-06-10 Legrand Sa Disjoncteur, en particulier disjoncteur multipolaire
DD132379B1 (de) * 1976-08-02 1981-04-29 Guenther Kammer Ueberlast-leitungsabschalter in schmalbauweise
DE7802000U1 (de) * 1978-01-24 1978-10-12 Felten & Guilleaume Carlswerk Ag, 5000 Koeln Leitungsschutzschalter in Flachbauweise

Also Published As

Publication number Publication date
EP0026416A1 (fr) 1981-04-08
ATE3091T1 (de) 1983-04-15
DE2938858A1 (de) 1981-04-02
DE2938858C2 (de) 1983-10-13
EP0026416B1 (fr) 1983-04-13

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