EP0146528A2 - Mécanisme de commutation pour disjoncteur de protection de puissance - Google Patents

Mécanisme de commutation pour disjoncteur de protection de puissance Download PDF

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Publication number
EP0146528A2
EP0146528A2 EP84890226A EP84890226A EP0146528A2 EP 0146528 A2 EP0146528 A2 EP 0146528A2 EP 84890226 A EP84890226 A EP 84890226A EP 84890226 A EP84890226 A EP 84890226A EP 0146528 A2 EP0146528 A2 EP 0146528A2
Authority
EP
European Patent Office
Prior art keywords
handlebar
movable contact
armature
contact bridge
tab
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.)
Granted
Application number
EP84890226A
Other languages
German (de)
English (en)
Other versions
EP0146528B1 (fr
EP0146528A3 (en
Inventor
Gerhard Amon
Karl Kager
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.)
Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
Felten and Guilleaume Austria AG
Original Assignee
Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
Felten and Guilleaume Austria AG
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 Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich, Felten and Guilleaume Austria AG filed Critical Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederosterreich
Publication of EP0146528A2 publication Critical patent/EP0146528A2/fr
Publication of EP0146528A3 publication Critical patent/EP0146528A3/de
Application granted granted Critical
Publication of EP0146528B1 publication Critical patent/EP0146528B1/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
    • H01H71/50—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
    • 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 the contact bridge, which is pivotally mounted in the housing via a play bearing, on the one hand preferably via a bridge tab with a handlebar, which in turn is coupled with an actuation button, and on the other hand with the armature of the magnetic release an anchor bracket is articulated, the paths of movement of anchor bracket and handlebar intersecting.
  • circuit breakers equipped with such a switching mechanism known from AT-B 237 724 are to be closed again, for example after a trip, via their actuation button, then it is essential, particularly at higher currents, that the movable contact is not hesitantly moved in contact with the fixed contact.
  • the actuating button is pivoted as quickly. This can result in an arc forming when the circuit breaker is closed and the contact apparatus is damaged or destroyed or the two contacts are welded together.
  • the invention has for its object to develop a switching mechanism of the type mentioned in such a way that, without having to change the g round design of circuit breakers, the closing of the contact p pates, regardless of the speed of movement of the actuating button, takes place quickly.
  • At least one projection is provided on the armature tab of the magnetic release, that the projection bears during the movement of the handlebar into its position corresponding to the closed position of the movable contact on the surface of the handlebar facing the magnetic release, the contact of the Contact bridge is held at a distance from the fixed contact and that the projection engages in a recess in the handlebar in the position of the handlebar corresponding to the closed position of the movable contact bridge.
  • the contact-carrying end of the movable contact bridge which is coupled to the armature of the magnetic release, is kept at a distance from the fixed contact, regardless of the movement of the handlebar, since the projection of the armature tab of the magnetic release on the handlebar, for example on its side facing the magnetic release.
  • the contact spring is already pretensioned, which is possible because the movable contact bridge is pivotably mounted in the housing via a bearing having a play (long slot aligned transversely to the longitudinal extension of the contact bridge, into which a bearing journal engages).
  • the recess is provided in a slidably guided in or on the handlebar, which is loaded by a spring, in particular a tension spring in the sense of a movement into a position in which the projection on the anchor tab in the closed position of the movable contact bridge engages in the recess .
  • the opening of the circuit breaker via the actuating button of the switching mechanism is not impeded in a particularly simple manner, since the handlebar can be displaced in the sense of an opening movement of the movable contact bridge even when the projection of the armature tab engages in its recess.
  • the handlebar is designed as a slotted plate, in particular essentially a U-shaped plate, that the anchor bracket is arranged within the slot and that the slide is essentially U-shaped, wherein the anchor tab is received at least in the closed position of the movable contact bridge between its legs and that the recess associated with the projection on the anchor tab is provided in one leg of the slide.
  • This embodiment is characterized by a particularly space-saving design of the switching mechanism according to the invention.
  • the armature tab of the magnetic release is designed as an approximately U-shaped sheet metal part that protrudes outwards from a body arranged between the legs of the armature tab, starting from a cutout in the leg. This embodiment withstands the loads particularly well when triggered.
  • the circuit breaker shown in Figure 1 has a contact apparatus made of fixed contact 1, which is connected via a rail 2 to a terminal 3, and a movable contact 5 arranged on a movable contact bridge 4.
  • a contact apparatus made of fixed contact 1, which is connected via a rail 2 to a terminal 3, and a movable contact 5 arranged on a movable contact bridge 4.
  • Actuating button 7 pivotally mounted.
  • the actuating button is coupled to the movable contact bridge 4 via a link 8 and a bridge link 9 which is connected to it in an articulated manner.
  • a jack tab 10 is also articulated, which in turn is movably connected to a pawl 11 pivotably mounted in the housing 6.
  • a deion chamber 12 In the housing 6 of the circuit breaker, as usual, a deion chamber 12, a magnetic release with armature 13 and a bimetallic release 14 are accommodated in the area of the contact apparatus, which pivot the jack support 15 in the event of an overload, so that the jack 11 is released and the movable contact bridge 4 underneath the effect of the contact spring 16 is pivoted away from the fixed contact 1.
  • On the bimetal strip of the bimetal Trigger 14 is connected to the second terminal of the circuit breaker via a cable.
  • the end of the contact bridge 4 which carries the movable contact 5 and which is mounted in the housing 6 via a pin 17 which engages in an elongated slot 18 oriented transversely to its longitudinal extent is coupled to the armature 13 of the magnetic release via an armature tab 19.
  • the anchor bracket is, for example, an approximately U-shaped sheet metal part, the free ends of the legs of this sheet metal part being connected to the movable contact bridge 4.
  • a body 21 is received between the legs 20 of the anchor plate 19, from which protrusions 22 protrude on both sides, which penetrate corresponding recesses in the legs 20 of the anchor plate 19.
  • the projections 22 have the substantially wedge-shaped shape shown in FIG. 1 with the edge 23 pointing towards the handlebar 8. In this embodiment, the projection 22 rests with its cutting edge 23 on the handlebar 8 or on the slide 27 guided on it, so that a problem-free manner and rapid penetration of the projection 22 into the recess 32 is possible.
  • the handlebar 8 itself has the shape shown in FIG. 2 and is articulated via tabs 24 to the actuation button 7 and via tabs 25 to the bridge tab 9 and the jack tab 10.
  • a slide 27 is slidably received between the legs 26 of the substantially U-shaped link 8.
  • the legs 26 have ribs 28 on their inside and the slide 27 has corresponding grooves.
  • the slide 27 is pulled by a spring 30, which is stretched between the webs of the link 8 and the slide 27 against a stop 29, so that it can be moved against the action of the spring 30 towards the end of the link 8, the is assigned to the movable contact bridge, d. H. away from the operating button 7.
  • the position of the 8 slide 27 relative to the handlebar / is precisely defined by the stop 29 when the handlebar 8 is pushed forward when the movable contact bridge 4 is closed.
  • the slide 27 can move away from its stop 29 on the handlebar 8 and maintain its position even when the handlebar 8 is pushed back, as long as the projection 22 on the armature tab 19 of the magnetic trigger engages in its recess 32.
  • each leg 31 of the slide 27 a recess 32 is provided, into which the projections 22 of the anchor bracket 19 engage in the closed position of the circuit breaker switching mechanism shown in FIG. 1.
  • the handlebar 8 is pushed forward and acts on the movable contact bridge 4 via the anchor tab 9 in the sense of a closing movement.
  • the movable contact bridge 4 is coupled to the armature tab 19 and the armature tab 19 rests on the handlebar 8 via the projections 22 provided on it on the surface of the slide 27 facing the magnetic release, the contact 5 of the movable contact bridge 4 is prevented from dealing with it Fully approach fixed contact 1.

Landscapes

  • Breakers (AREA)
EP19840890226 1983-11-28 1984-11-22 Mécanisme de commutation pour disjoncteur de protection de puissance Expired EP0146528B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT415783A AT378284B (de) 1983-11-28 1983-11-28 Schaltmechanik fuer leitungsschutzschalter
AT4157/83 1983-11-28

Publications (3)

Publication Number Publication Date
EP0146528A2 true EP0146528A2 (fr) 1985-06-26
EP0146528A3 EP0146528A3 (en) 1987-01-21
EP0146528B1 EP0146528B1 (fr) 1989-01-11

Family

ID=3560406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840890226 Expired EP0146528B1 (fr) 1983-11-28 1984-11-22 Mécanisme de commutation pour disjoncteur de protection de puissance

Country Status (3)

Country Link
EP (1) EP0146528B1 (fr)
AT (1) AT378284B (fr)
DE (1) DE3476137D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654253A1 (fr) * 1989-11-03 1991-05-10 Schupa Elektro Gmbh & Co Kg Dispositif de fermeture brusque des constacts de leviers mobiles, notamment pour disjoncteur bipolaire de protection contre les courants de fuite.
DE4008506A1 (de) * 1990-03-16 1991-09-19 Willem Brandhorst Verfahren zur ansteuerung der schaltbewegung eines elektrischen schalters und elektrischer schalter
CN118098894A (zh) * 2024-04-25 2024-05-28 浙江天正电气股份有限公司 一种电磁脱扣机构以及断路器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL39632C (fr) * 1933-07-05
US2251703A (en) * 1934-11-07 1941-08-05 Bulldog Electric Prod Co Circuit breaker
AT237724B (de) * 1962-05-15 1965-01-11 Biegelmeier Gottfried Wechselstrom-Leitungsschutzschalter mit Schlag-Zuganker
DE2132738B1 (de) * 1971-07-01 1972-07-06 Ellenberger & Poensgen Ein- oder mehrpoliger UEberstromschalter mit thermischer und/oder elektromagnetischer Ausloesung
DE2240125C3 (de) * 1972-08-16 1975-01-02 Starkstrom-Schaltgeraetefabrik E. Spindler & O. Deissler, 5277 Rodt SchaltschloB mit Sprungschaltung
DE3031482A1 (de) * 1980-08-21 1982-04-01 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltmechanismus fuer leitungsschutzschalter
DE3212474C2 (de) * 1982-04-03 1986-02-06 Ellenberger & Poensgen Gmbh, 8503 Altdorf Überstromschutzschalter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2654253A1 (fr) * 1989-11-03 1991-05-10 Schupa Elektro Gmbh & Co Kg Dispositif de fermeture brusque des constacts de leviers mobiles, notamment pour disjoncteur bipolaire de protection contre les courants de fuite.
BE1005375A0 (fr) * 1989-11-03 1993-07-06 Schupa Elektro Gmbh & Co Kg Dispositif d'enclenchement brusque d'un levier de contact monte de facon mobile, en particulier pour un commutateur de protection contre des courants de defaut.
DE4008506A1 (de) * 1990-03-16 1991-09-19 Willem Brandhorst Verfahren zur ansteuerung der schaltbewegung eines elektrischen schalters und elektrischer schalter
CN118098894A (zh) * 2024-04-25 2024-05-28 浙江天正电气股份有限公司 一种电磁脱扣机构以及断路器

Also Published As

Publication number Publication date
ATA415783A (de) 1984-11-15
AT378284B (de) 1985-07-10
EP0146528B1 (fr) 1989-01-11
DE3476137D1 (en) 1989-02-16
EP0146528A3 (en) 1987-01-21

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