EP0143982B1 - Disjoncteur avec champ de soufflage de l'arc - Google Patents

Disjoncteur avec champ de soufflage de l'arc Download PDF

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Publication number
EP0143982B1
EP0143982B1 EP84112941A EP84112941A EP0143982B1 EP 0143982 B1 EP0143982 B1 EP 0143982B1 EP 84112941 A EP84112941 A EP 84112941A EP 84112941 A EP84112941 A EP 84112941A EP 0143982 B1 EP0143982 B1 EP 0143982B1
Authority
EP
European Patent Office
Prior art keywords
contact
strip
contact strip
circuit breaker
bent
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
EP84112941A
Other languages
German (de)
English (en)
Other versions
EP0143982A1 (fr
Inventor
Joseph Westermeyer
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.)
Cessione abl Sursum Bayerische Elektrozubehor GmbH
Original Assignee
Sursum Elektrizitatsgesellschaft Leyhausen & Co GmbH
SURSUM ELEKTRIZITATSGESELLSCHAFT LEYHAUSEN GmbH AND Co
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 Sursum Elektrizitatsgesellschaft Leyhausen & Co GmbH, SURSUM ELEKTRIZITATSGESELLSCHAFT LEYHAUSEN GmbH AND Co filed Critical Sursum Elektrizitatsgesellschaft Leyhausen & Co GmbH
Publication of EP0143982A1 publication Critical patent/EP0143982A1/fr
Application granted granted Critical
Publication of EP0143982B1 publication Critical patent/EP0143982B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc

Definitions

  • the invention relates to a self-switch with an arc blowing field, in which a rotatably mounted switching arm carries a movable contact piece, which is assigned to a fixed contact piece, which is provided on the cross piece of a U-shaped, loop-forming contact strip which is connected internally to an electrical circuit and the other end of which is free, forms a deflecting horn and is assigned to a group of deion sheets, to which at least one arc baffle leads, the backing sheet of the tripping magnet serving as the carrier of the fixed contact piece and the width of the contact strip extending between two ceramic insulating washers.
  • the contact strip is formed from a single sheet.
  • the curved contact strip is used to conduct arcs, which occur in the event of short circuits between the contact pieces, to the deion plates.
  • the derivation of the short-circuit arcs is often unsatisfactory in this known small circuit breaker.
  • An important requirement placed on a miniature circuit breaker is a high short-circuit breaking capacity.
  • the contacts in these switches are small and low in mass, it is important that when the contacts are opened the arc migrates very quickly away from the contact pieces onto the arc guide plates.
  • a switch is also known (DE-B-9232-644), in which a ferromagnetic sheet metal strip is applied to the side of a contact strip facing away from a contact piece.
  • this arrangement is disadvantageous with regard to holding the sheet metal strip and improving the arc discharge.
  • the invention provides, solving this problem, a self-switch, which is characterized in that a ferromagnetic sheet metal strip is inserted into the side of the U-shaped bent contact strip facing away from the fixed contact piece, forming a loop.
  • the inserted sheet metal strip extends over the width of the bent contact strip and tapers in width with it towards the free end. This design results in optimal conditions for arc discharge.
  • the circuit breaker according to the drawing has a narrow housing, which consists of a box 1 and a lid, not shown in FIG. 1, placed thereon.
  • the side wall of the box 1 has three eyes 2 distributed, which are provided with holes, which coincide with holes in the lid and through which rivets, not shown, which hold the housing together.
  • the housing has barbs 3 facing one another on the rear side, one of which is mounted in a spring-loaded manner and which are a device for attaching the housing to rails.
  • the housing is equipped with a screw terminal 4 on each of an upper and a lower transverse side, to which lines for the supply line and the discharge of current can be connected.
  • the upper screw terminal 4 sits on a carrier piece 4 'which projects into the housing and carries a bimetallic release 5. This is connected via a metallic wire 6 to a switching arm 7, which forms a movable contact piece 8 which interacts with a fixed contact piece 9.
  • the fixed contact piece is on a coil of an impact trigger 10 is connected, which has a spring-loaded plunger. At the other end, the coil is connected to the lower screw terminal 4 via a metallic wire 11.
  • the shift arm 7 is rotatably mounted about an axis 12 and carries a three-armed locking lever 14 rotatably on its arm facing the front 13.
  • the bimetal trigger 5 acts on one arm of the locking lever 14 by means of an adjustable grub screw.
  • the plunger of the impact anchor trigger 10 acts on the second arm.
  • the third arm of the locking lever 14 interacts with an arm of a pawl 15 which is rotatably mounted about an axis 16 at the front end of the switching arm 7.
  • a joint piece 17 is articulated, which is articulated at the other end to an arm of a handle lever 18, which is rotatably mounted and the handle piece of which projects through an opening in the side wall on the front side 13.
  • the handle lever 18 is acted upon by a wire spring 19, which strives to bring the handle lever into the position with the handle positioned upward, which corresponds to the open state of the switching contact.
  • a tension spring 20 also acts on the switching arm 7.
  • the stationary Contact piece 9 is part of a contact strip 25 which is mechanically firmly connected to the impact anchor trigger 10 and is electrically connected to the coil.
  • the contact strip 25 has the shape of a square U, one leg of which begins at the end face of the anchor trigger 10, the corner formed by this leg and the cross piece forms the contact piece 9 and the second leg after the second corner with the free end of the Front edges of the deion plates 22 ends.
  • a sheet metal strip 26 is inserted into the bent contact strip 25 and runs over its entire length in accordance with the contact strip.
  • the thickness of the inserted metal strip is noticeably less than that of the contact strip; There is no firm, intimate, flat connection between the bent contact strip and the inserted sheet metal strip.
  • the contact strip 25 and the sheet metal strip 26 extend in width between two ceramic insulating disks 27, of which only the one lying on the bottom of the box 1 is shown in FIG. 1. These two insulating disks 27 delimit the part of the arc chamber 21 which is not occupied by the group of deion sheets 22.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Claims (2)

1. Disjoncteur automatique avec champ de soufflage d'arc, dans lequel un bras de manoeuvre (7) monté à pivotement porte une pièce de contact mobile (8) à laquelle est conjuguée une pièce de contact fixe (9) prévue sur l'âme transversale d'une bande de contact (25) pliée en forme de U et formant une boucle, cette bande de contact ayant une extrémité raccordée à un circuit de courant électrique et une autre extrémité qui est libre, forme une corne de dérivation et est conjuguée à un groupe de tôles de désionisation (22) auxquelles va au moins une tôle de dérivation d'arc (23, 24), la tôle de refermeture de l'aimant de déclenchement servant de support de la pièce de contact fixe (9), et la bande de contact (25) s'étendant, en largeur, entre deux plaques isolantes en céramique (27), caractérisé en ce qu'une bande de tôle ferromagnétique (26) est insérée dans le côté de la bande de contact (25) qui n'est pas tourné vers la pièce de contact fixe (9), ladite bande de contact étant pliée en forme de U et formant une boucle.
2. Disjoncteur automatique selon revendication 1, caractérisé en ce que la bande de tôle insérée (26) s'étend sur la largeur de la bande de contact pliée (25) et possède une largeur qui, comme celle de la bande de contact, diminue vers l'extrémité libre.
EP84112941A 1983-10-29 1984-10-26 Disjoncteur avec champ de soufflage de l'arc Expired EP0143982B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833339399 DE3339399A1 (de) 1983-10-29 1983-10-29 Selbstschalter mit lichtbogenblasfeld
DE3339399 1983-10-29

Publications (2)

Publication Number Publication Date
EP0143982A1 EP0143982A1 (fr) 1985-06-12
EP0143982B1 true EP0143982B1 (fr) 1987-05-27

Family

ID=6213120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112941A Expired EP0143982B1 (fr) 1983-10-29 1984-10-26 Disjoncteur avec champ de soufflage de l'arc

Country Status (5)

Country Link
US (1) US4614928A (fr)
EP (1) EP0143982B1 (fr)
AU (1) AU570739B2 (fr)
CA (1) CA1227826A (fr)
DE (1) DE3339399A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56162436A (en) * 1980-05-20 1981-12-14 Matsushita Electric Works Ltd Circuit breaker
DE3339400A1 (de) * 1983-10-29 1985-05-09 Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co, 8500 Nürnberg Selbstschalter mit schlaganker-ausloeser
DE3621690A1 (de) * 1986-06-27 1988-01-14 Bbc Brown Boveri & Cie Loescheinrichtung fuer elektrische schalter
DD253323A1 (de) * 1986-10-06 1988-01-13 Hermsdorf Keramik Veb Leitungsschutzschalter
US4968863A (en) * 1989-06-29 1990-11-06 Square D Company Unitary breaker assembly for a circuit breaker
DE9002197U1 (de) * 1990-02-24 1991-06-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Leitungsschutzschalter mit einem elektromagnetischen Auslöseorgan
US5185590A (en) * 1991-12-23 1993-02-09 North American Philips Corporation Magnetic blow-out circuit breaker with booster loop/arc runner
US5214402A (en) * 1991-12-23 1993-05-25 North American Philips Corporation Trip link latch and interpole link for a circuit breaker
AT404648B (de) * 1992-06-29 1999-01-25 Felten & Guilleaume Ag Oester Selbstschalter
TR27123A (tr) * 1993-07-21 1994-11-09 Felten & Guilleaume Ag Oester Kontak köprüsüne, tespit mandali mesnedine, tepit mandalina sahip otomatik salter.
DE102005041231B4 (de) * 2005-08-31 2009-11-26 Abb Ag Elektrisches Schaltgerät
DE102005041232B4 (de) * 2005-08-31 2009-11-26 Abb Ag Elektrisches Schaltgerät
AT512262B1 (de) * 2011-12-09 2016-08-15 Eaton Ind Austria Gmbh Verfahren zum justieren einer auslöseeinheit für einen schutzschalter
US10650993B1 (en) * 2019-03-19 2020-05-12 Siemens Industry, Inc. Circuit breaker with enhanced arc extinguishing chamber

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2343323A (en) * 1942-08-11 1944-03-07 Westinghouse Electric & Mfg Co Electric switch
DE1232644B (de) * 1961-03-10 1967-01-19 Licentia Gmbh Schaltgeraet mit einer eine Loeschblechanordnung enthaltenden Lichtbogenkammer
GB1031971A (en) * 1964-03-13 1966-06-02 Square D Co Improvements in or relating to electric circuit breakers
DE1463681B2 (de) * 1964-05-30 1970-08-13 Stotz-Kontakt GmbH, 6800 Mannheim-Käfertal Selbstschalter, insbesondere Leitungsschutzschalter
DE1966598C3 (de) * 1969-01-31 1981-03-19 Westermayer, Joseph, Dipl.-Ing., 8500 Nürnberg Elektrischer Kleinselbstschalter mit Schaltmechanik und Lichtbogenkammer
DE1904731C3 (de) * 1969-01-31 1975-11-20 Joseph Dipl.-Ing. 8500 Nuernberg Westermeyer Elektrischer Kleinselbstschalter
CH543174A (de) * 1971-09-30 1973-10-15 Carl Maier & Cie Elek Sche Sch Leitungsschutzschalter
FR2204872B1 (fr) * 1972-10-30 1976-08-20 Legrand Sa
DE7508649U (de) * 1974-05-14 1975-08-28 Kopp H Hochleistungs-Selbstschalter
CH614069A5 (fr) * 1977-03-31 1979-10-31 Weber Ag Fab Elektro
DE2813431A1 (de) * 1978-03-29 1979-10-04 Bbc Brown Boveri & Cie Elektrischer installationsschalter
DE2848589A1 (de) * 1978-11-09 1980-05-22 Licentia Gmbh Leitungsschutzschalter mit einer eine blasschleife bildenden kontaktanordnung
US4223288A (en) * 1979-01-15 1980-09-16 Gould Inc. Manually operable and shunt controllable circuit breaker
ES247088U (es) * 1979-11-13 1980-03-16 Enrique Garrell Alsina Sa Interruptor magnetotermico
US4301342A (en) * 1980-06-23 1981-11-17 General Electric Company Circuit breaker condition indicator apparatus
DE3030429A1 (de) * 1980-08-12 1982-09-30 Brown, Boveri & Cie Ag, 6800 Mannheim Lichtbogenloeschkammer
DD204343A1 (de) * 1981-08-13 1983-11-23 Wolfgang Suess Leitungsschutzschalter in schmalbauweise

Also Published As

Publication number Publication date
EP0143982A1 (fr) 1985-06-12
DE3339399C2 (fr) 1992-07-30
CA1227826A (fr) 1987-10-06
AU570739B2 (en) 1988-03-24
DE3339399A1 (de) 1985-05-09
US4614928A (en) 1986-09-30
AU3480384A (en) 1985-05-02

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