EP0046841B1 - Mécanisme de commande pour disjoncteur - Google Patents

Mécanisme de commande pour disjoncteur Download PDF

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Publication number
EP0046841B1
EP0046841B1 EP81103221A EP81103221A EP0046841B1 EP 0046841 B1 EP0046841 B1 EP 0046841B1 EP 81103221 A EP81103221 A EP 81103221A EP 81103221 A EP81103221 A EP 81103221A EP 0046841 B1 EP0046841 B1 EP 0046841B1
Authority
EP
European Patent Office
Prior art keywords
lever
contact
ratchet
leg
operating mechanism
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
EP81103221A
Other languages
German (de)
English (en)
Other versions
EP0046841B2 (fr
EP0046841A1 (fr
Inventor
Günter Böker
Dieter Kropp
Georg Schedler
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.)
OFFERTA DI LICENZA AL PUBBLICO
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=6110064&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0046841(B1) "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 AT81103221T priority Critical patent/ATE9422T1/de
Publication of EP0046841A1 publication Critical patent/EP0046841A1/fr
Application granted granted Critical
Publication of EP0046841B1 publication Critical patent/EP0046841B1/fr
Publication of EP0046841B2 publication Critical patent/EP0046841B2/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
    • H01H2300/048—Snap closing by latched movable contact, wherein the movable contact is held in a minimal distance from the fixed contact during first phase of closing sequence in which a closing spring is charged

Definitions

  • the invention relates to a switching mechanism for circuit breakers, in which an operating knob acts on a spring-loaded contact lever via a ratchet lever and forms a latching point with the ratchet lever with the aid of a bracket articulated on it.
  • 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 easy to assemble and take up little space. Furthermore, the mechanism should be expandable in a simple manner to generate a sudden contact actuation.
  • ratchet lever and the contact lever can be pivoted as a preassembled unit about a common axis fixed to the housing and the ratchet lever acts on the contact lever in the contact closing direction via a leg spring, with a separately mounted release lever being provided for unlatching.
  • the mechanism can be designed in such a way that the latch lever acts on the contact lever in the closed position on the contact lever in the contact closing direction via a leg of the leg spring that wraps around the common axis and is supported on the housing with the other leg.
  • the ratchet lever can also be clamped to the contact lever via a spring which generates the contact pressure in the switched-on position, a second leg spring acting on the ratchet lever with one end, wrapping around the common axis and supporting the other end on a housing stop, is provided for switching off .
  • a locking lever which temporarily locks the contact lever during the switching-on process in the open position and on which the operating knob acts in the unlocking direction is provided on the axis of the release lever.
  • the switching mechanism according to FIGS. 1 to 3 consists of a double-armed contact lever 1, which forms a contact piece 2 at a lever arm end, which cooperates with a stationary contact 3.
  • the contact lever is mounted together with a jack arm 4, which is also double-armed, on an axle 5 fixed to the housing.
  • a leg spring 6, which also serves as a switch-off and contact pressure spring, wraps around the axis 5 and engages with one leg 6a between the latch lever 4 and the contact-side lever arm of the contact lever 1, while the other leg 6b is supported on a housing stop 7.
  • the pawl lever 4 acts on the leg spring 6 with an attachment 4a and, with this attachment, engages an angled portion 1a of the contact lever 1.
  • the contact lever has a U-shaped cross-sectional profile at its contact-side end, so that the leg 6a of the leg spring 6 and also the contact-side lever arm of the ratchet lever is located between the side cheeks of the contact lever.
  • the contact lever 1 forms, together with the ratchet lever 4, the leg spring 6 and the axis 5, a unit which can be preassembled and can therefore be used completely in the switch housing.
  • a steel ball 4b is attached, preferably welded, which together with an angled portion 8a of a bracket 8 forms the latching point.
  • the bracket 8 is articulated to an operating knob 9 and is also still under the action of a release lever 11 which can be pivoted about a shaft 10 fixed to the housing.
  • the steel ball 4b of the ratchet lever is latched to the bend 8a of the bracket 8.
  • the approach 4a of the ratchet lever presses on the leg 6a of the leg spring, which in turn rests on the back of the web 1b of the contact lever and holds it in the contact closing position.
  • the contact pressure for the closed position is thus generated by the leg 6a of the leg spring.
  • the plunger 12 of the release coil 13 strikes the leg 11 of the release lever and rotates it counterclockwise, so that the leg 11 presses the bracket 8 away from the steel ball 4b of the latch lever, as a result of which the latching is released.
  • the leg 6a of the leg spring now also rotates counterclockwise via the extension 4a of the ratchet lever until it strikes the bend 1a of the contact lever 1 and takes it along.
  • the contact point 2, 3 is thus opened.
  • the trigger lever strikes with a shoulder 11c on the contact lever and accelerates the contact opening by this impact.
  • the control knob also changes into the switch-off position shown in FIG. 2 by a spring, not shown.
  • a double-armed, cross-sectionally provided with a U-shaped profile contact lever 20 is also provided, which forms a unit together with a one-armed ratchet lever 23 and a common axis 24 and a spring 25.
  • Contact lever and pawl lever are braced against each other by the spring 25, the spring resting on the one hand on the pawl lever and on the other hand on the back of the contact lever pressing the pawl lever in the released state with an edge 23a against the back 20a of the contact lever.
  • the axis 24 of the contact lever pawl lever unit is fixed in the switch housing, not shown.
  • the contact lever interacts with its contact piece 21, with a stationary contact piece 22.
  • the spring 25 forms the contact pressure spring, while a further spring 26, which engages the pawl lever 23, loops around the axis 24 and is supported with the other end on a housing stop 27, acts as an opening spring.
  • the latching-side end 23b of the latch lever 23 forms a spherical cap which, as in the embodiment according to FIGS. 1 to 3, cooperates with an angled portion 8a of a bracket 8.
  • the bracket 8 is articulated to an operating knob 9 as in the embodiment according to FIGS. 1 to 3 and is under the action of a release lever 11 which can be pivoted about a shaft 10 fixed to the housing.
  • the release lever interacts with the bracket 8 with a lever arm 11a.
  • a locking lever 28 which can be locked with a hook-shaped lever arm 28a on a pin 29 attached to the contact lever.
  • the pin 29 is only inserted into two aligned openings of the cheeks of the contact lever. It passes through an elongated hole 23c provided in the ratchet lever and is guided between the housing walls in a manner not shown.
  • the other lever arm 28b of the locking lever interacts with a pin 9a of the control knob 9.
  • a spring 30 wrapping around the axis 10 acts with the one end on the locking lever in a counterclockwise direction, while it engages with the other end on the release lever in a clockwise direction.
  • the spherical cap-like end 23b of the latch lever 23 is latched to the bend 8a of the bracket 8.
  • the control toggle 9 and the bracket 8 are clamped to each other in the dead center position, the ratchet lever being raised against the action of the spring 25 with its edge 23a from the rear 20a of the contact lever 20.
  • the spring 25 applies the contact pressure at the contact point.
  • the distance between the edge 23a and the rear of the contact lever is a measure of the erosion reserve at the contact point.
  • the locking lever 28 has no function in this switching position.
  • the electromagnetic short-circuit release takes place as in the exemplary embodiment according to FIGS. 1 to 3.
  • the switch changes to the position shown in FIG. 6.
  • the hand control toggle 9 is pivoted counterclockwise, as a result of which the bend 8 takes the ratchet lever and thus the contact lever at the same time.
  • the contact lever 20 is held on the pin 29 by the hook-like lever arm 28a of the latching lever 28, so that initially no contact with the stationary contact 22 takes place (FIG. 5).
  • the pin 9a engages behind the lever arm 28b of the latching lever and pivots it clockwise, so that the hook-like lever arm 28a finally releases the pin 29 and the contact lever jumps into the switched-on position by the bias of the spring 25.
  • the invention is particularly advantageous because the contact lever latch lever unit can be mounted outside the device and installation in the switch housing is possible in the tensioned state.
  • the mechanism requires relatively few individual parts that can be manufactured and assembled fully automatically.
  • the latching lever can optionally be inserted both in the embodiment according to FIGS. 1 to 3 and in the embodiment according to FIGS. 4 to 6 if the contact and latch levers are provided with a corresponding receptacle for the locking pin.
  • the mechanism according to FIGS. 4 to 6 can also be used without a locking lever if the sudden contact actuation is not necessary.

Landscapes

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

Claims (7)

1. Mécanisme de commande pour disjoncteur dans lequel une manette de commande agit sur un levier de contact (1, 20) élastique par l'intermédiaire d' un levier à cliquet (4, 23), manette qui, à l'aide d'un étrier (8) qui lui est articulé, forme un encliquetage avec le levier à cliquet, caractérisé en ce que le levier à cliquet (4, 23) et le levier de contact 1, 20) sont montés préalablement sous forme d'une unité pour bivoter autour d'un axe commun (5, 24) fixé au boîtier et en ce que le levier à cliquet (4, 23) agit sur le levier de contact (1, 20) dans le sens de la fermeture du contact par l'intermédiaire d'un ressort à branches (6, 25), un levier disjoncteur (11) à fixation particulière étant prévu pour le dégagement.
2. Mécanisme de commande selon la revendication 1, caractérisé en ce que le levier à cliquet (4) agit sur le levier de contact (1) en position d'enclenchement dans le sens de la fermeture du contact (fig. 1-3) par l'intermédiaire d'une branche (6a) d'un ressort qui entoure l'axe (5) commun et qui s'appuie par une autre branche (6b) sur le boîtier pour agir dans le sens du déclenchement.
3. Mécanisme de commande selon les revendications 1 et 2, caractérisé en ce que la branche (6a) du ressort à branches est placée entre l'extrémité de l'un des bras du levier à cliquet (4) à deux bras et le côté arrière du levier de contact (1) et en ce que cette extrémité coopère, dans le sens de mise hors-circuit, avec une butée (1a) du levier de contact également à deux bras (fig. 1 à 3).
4. Mécanisme de commande selon la revendication 1, caractérisé en ce que le levier à cliquet (23) est contraint avec le levier de contact (20) par un ressort (25) produisant la contrainte de contact en pasition de contact, et en ce qu'un deuxième ressort à branche (26) est prévu pour la mise hors circuit et agit par une extrémité sur le levier à cliquet, ressort qui entoure l'axe (24) commun et s'appuie par l'autre ectrémité sur une butée (27) du boîtier (fig. 4 à 6).
5. Mécanisme de commande selon les revendications 1 à 4, caractérisé en ce qu'un levier à crans (28) pivotant autour de l'axe (10) du levier disjoncteur (11) est prévu, levier à crans arrêtant temporairement le levier de contact en position ouverte lors de l'opération de mise en circuit, levier à crans sur lequel la manette de commande (9) agit dans le sens de la libération (fig. 4 à 6).
6. Mécanisme de commande selon les revendications 1 à 5, caractérisé en ce que le levier à crans (28) à deux bras retient en position d'arrêt le levier de contact (20) par un bras de levier (28a) en forme de crochet au coulisseau (29) fixé au levier de contact, tandis que l'autre bras de levier (28b) se trouve, lors de l'opération de mise en circuit, sur la trajectoire de pivotement d'un maneton (9a) de la manette de commande (9) (fig. 4 à 6).
7. Mécanisme de commande selon les revendications 1 à 6, caractérisé en ce que le levier à crans (28) est contraint avec un levier disjoncteur (11)-par un ressort à branches (30) entourant l'axe (10) commun et en ce que le levier disjoncteur est sous tension dans le sens contraire de libération (fig. 4 à 6).
EP81103221A 1980-08-21 1981-04-29 Mécanisme de commande pour disjoncteur Expired EP0046841B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81103221T ATE9422T1 (de) 1980-08-21 1981-04-29 Schaltmechanismus fuer leitungsschutzschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803031482 DE3031482A1 (de) 1980-08-21 1980-08-21 Schaltmechanismus fuer leitungsschutzschalter
DE3031482 1980-08-21

Publications (3)

Publication Number Publication Date
EP0046841A1 EP0046841A1 (fr) 1982-03-10
EP0046841B1 true EP0046841B1 (fr) 1984-09-12
EP0046841B2 EP0046841B2 (fr) 1989-11-08

Family

ID=6110064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103221A Expired EP0046841B2 (fr) 1980-08-21 1981-04-29 Mécanisme de commande pour disjoncteur

Country Status (3)

Country Link
EP (1) EP0046841B2 (fr)
AT (1) ATE9422T1 (fr)
DE (2) DE3031482A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335887C2 (de) * 1983-10-03 1986-08-07 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus für Leitungsschutzschalter
AT378284B (de) * 1983-11-28 1985-07-10 Felten & Guilleaume Ag Oester Schaltmechanik fuer leitungsschutzschalter
US4628288A (en) * 1984-05-15 1986-12-09 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
US4641001A (en) * 1984-06-15 1987-02-03 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
JPH0119315Y2 (fr) * 1984-09-19 1989-06-05
US4743878A (en) * 1985-05-01 1988-05-10 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter
DE3530635A1 (de) * 1985-08-28 1987-03-12 Bbc Brown Boveri & Cie Schaltwerk fuer einen elektrischen schalter
CH670330A5 (fr) * 1986-07-25 1989-05-31 Weber Ag
FR2610760B1 (fr) * 1987-02-10 1993-05-14 Serd Soc Et Realisa Disjonct Interrupteur automatique multipolaire basse-tension a commande manuelle
EP0369807A3 (fr) * 1988-11-18 1991-08-21 National Electrical Designs Limited Disjoncteur miniaturisé
FR2646015B1 (fr) * 1989-04-18 1991-06-07 Gec Unelec Disjoncteur electrique
DE4040301A1 (de) * 1990-12-17 1992-07-02 Geyer Gmbh & Co Christian Schaltmechanismus
IT1302051B1 (it) * 1998-09-08 2000-07-20 Gewiss Spa Interruttore elettrico magnetotermico.
ATE315832T1 (de) * 1998-11-19 2006-02-15 Sace Spa Thermomagnetischer schutzschalter
DE10133879B4 (de) 2001-07-12 2004-07-08 Siemens Ag Schaltgerät mit einem Schaltschloss
CZ300092B6 (cs) * 2001-09-20 2009-01-28 Moeller Gebäudeautomation KG Spínací mechanika pro ochranný spínac
DE102005029059A1 (de) * 2005-06-23 2006-12-28 Abb Patent Gmbh Schaltgerät, Leitungsschutzschalter und dergleichen
SI23333B (sl) * 2010-03-08 2014-12-31 Eti Elektroelement D.D. Varnostno električno stikalo
CN110824348A (zh) * 2019-11-20 2020-02-21 国网辽宁省电力有限公司葫芦岛供电公司 一种手车式真空断路器梅花圆触头可调节式对接装置

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
DE1192730B (de) * 1962-03-09 1965-05-13 Licentia Gmbh Schaltmechanismus fuer Selbstschalter
DE2047223C3 (de) * 1970-09-25 1974-04-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus für Installationsselbstschalter
CH543173A (de) * 1971-09-30 1973-10-15 Carl Maier & Cie Elek Sche Sch Leitungsschutzschalter
US3872273A (en) * 1973-10-15 1975-03-18 Ite Imperial Corp Switchgear operating mechanism overcenter spring toggle with latched restraint
DE2504954B2 (de) * 1975-02-06 1976-12-02 Fa. Heinrich Kopp, Inh. Theodor Simoneit, 8756 Kahl Mechanisches sprungwerk, insbesondere fuer kleine hochleistungs-selbstschalter
FR2331879A1 (fr) * 1975-11-13 1977-06-10 Legrand Sa Disjoncteur, en particulier disjoncteur multipolaire
DE2943696C2 (de) * 1979-10-30 1982-06-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus für Leitungsschutzschalter

Also Published As

Publication number Publication date
EP0046841B2 (fr) 1989-11-08
DE3031482C2 (fr) 1988-03-31
EP0046841A1 (fr) 1982-03-10
DE3031482A1 (de) 1982-04-01
DE3165952D1 (en) 1984-10-18
ATE9422T1 (de) 1984-09-15

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