EP0243648B1 - Disjoncteur électrique - Google Patents

Disjoncteur électrique Download PDF

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Publication number
EP0243648B1
EP0243648B1 EP87103952A EP87103952A EP0243648B1 EP 0243648 B1 EP0243648 B1 EP 0243648B1 EP 87103952 A EP87103952 A EP 87103952A EP 87103952 A EP87103952 A EP 87103952A EP 0243648 B1 EP0243648 B1 EP 0243648B1
Authority
EP
European Patent Office
Prior art keywords
accordance
protective switch
movable contact
holding
holding device
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 - Lifetime
Application number
EP87103952A
Other languages
German (de)
English (en)
Other versions
EP0243648A1 (fr
Inventor
Peter Hilfiker
Willy Feller
Hans Lüthy
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.)
Rockwell Automation Switzerland GmbH
Original Assignee
Sprecher und Schuh 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 Sprecher und Schuh AG filed Critical Sprecher und Schuh AG
Publication of EP0243648A1 publication Critical patent/EP0243648A1/fr
Application granted granted Critical
Publication of EP0243648B1 publication Critical patent/EP0243648B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2481—Electromagnetic mechanisms characterised by the coil design

Definitions

  • the present invention relates to an electrical circuit breaker according to the preamble of claim I.
  • the movable contact part is mounted on a bolt which is fastened to a bracket which is fastened to the back part of the magnetic tripping device (CH-A 479 950).
  • CH-A 479 950 One end of the winding of the release coil of the magnetic release device is welded onto this bracket.
  • the present invention has for its object to provide a circuit breaker of the type mentioned of simple and reliable working construction, the magnetic release device and the movable contact part form a compact unit that takes up as little space as possible, which are also easy to assemble and with other components in a switch housing.
  • the mounting of the holder carrying the movable contact part on the magnetic release device, preferably on its release coil, can be carried out in a simple manner thanks to the snap connection by plugging the holder together with the movable contact part onto the release device.
  • connection between the holder and the magnetic release device is designed as defined in claims 2 to 5.
  • the holder is preferably connected to one end of the winding of the trigger coil, while the movable contact part is mounted on a bearing pin attached to the holder.
  • a desired rapid opening of the switching contact in the event of a short circuit is achieved in accordance with claim 9 in that the magnetic release device has an armature which is designed as a tension rod to act on the movable contact part.
  • the switching contact I of each phase is formed by a fixed contact part 2 and a movable contact part 3.
  • a magnetic release device 4 and an arcing chamber 5 with arcing plates 6 are assigned to this switching contact.
  • the fixed contact part 2 is formed in one piece with an arc guide plate 7, which extends to the arcing chamber 5.
  • the fixed contact part 2 carries a contact element 8 which interacts with a contact element 9 of the movable contact part 3.
  • This contact element 9 is fastened to a contact carrier 10, which is connected to two connecting parts II, 12 which are spaced apart and parallel to one another. Of these connecting parts II, 12, which are connected to one another via a web 13, only the connecting part 12 is visible in FIG. I and only the connecting part II in FIG. 5.
  • the two connecting parts II, 12 are rotatably mounted on a bolt 14 which is attached to a holder 15 made of electrically conductive material, preferably copper.
  • the two connecting parts II, 12 are connected to one another at their ends via a U-shaped bracket 16.
  • a coupling member 19 is rotatably mounted on the bolt 14. On this bolt 14 sits a torsion spring 20, which is supported with one end 20a on a shoulder 21 of the coupling member 19 and with the other end 20b on the stop lug 18 of the movable contact part 3 (Fig. 2).
  • a stop part 22 is also formed on the coupling member 19, with which the coupling member 19 is supported on the extension 17 of the movable contact part 3 under the action of the torsion spring 20.
  • the coupling member 19 is also provided with a protruding cam 23 (FIG. 2) which engages in the fork-shaped end 24a of an actuating element 24. This actuating element 24 forms part of the scarf common to all phases terantriebes, which is not shown in the figures.
  • the magnetic release device 4 has a release coil 25 with a coil body 26 made of plastic, which carries a winding 27.
  • the latter is welded with its one end 27a to an L-shaped connecting part 28, which is designed as a connecting terminal 29.
  • the other end 27b of the winding 27 is welded to one leg 15a of the holder 15.
  • This leg 15a is formed in one piece with an arc guiding element 30, which extends along the tripping coil 25.
  • a sheet 31 made of ferromagnetic material is fastened to the arc-guiding element 30, which promotes the commutation of an arc onto the arc-guiding element 30 when the switching contact I is opened.
  • an armature 32 Arranged in the interior of the coil body 26 is an armature 32 which can be displaced in the longitudinal direction of the coil and which runs between the connecting parts 11, 12 of the movable contact part 3 and is intended to engage with these connecting parts 11, 12 with its end 32a.
  • the armature 32 cooperates with this end 32a with a trigger element 33, which forms part of the switch triggering device.
  • each holding member 34, 35 projecting from the coil body 26 are formed in one piece, which run at a distance and parallel to one another, as can be seen in particular from FIG. 4.
  • Each holding member 34, 35 is provided with a resilient tongue 36 and 37, respectively.
  • the two tongues 36, 37 are slightly towards each other, i.e. bent inwards.
  • the leg 15a of the holder 15 is clamped between the ends of these tongues 36, 37 and the flange 26a of the coil body 26.
  • the other leg 15b which is angled relative to the leg 15a, the holder 15 sits on the holding member 35, as can be seen in particular from FIG. 3.
  • this leg 15b of the holder 15 engages with a projection 38 a projecting nose 39 which is formed on the holding member 35.
  • the holder 15 is held on the coil body 26 in the manner of a snap connection.
  • a displacement of the bracket 15 transversely to the direction of action of the tongues 36, 37, i.e. transverse to the longitudinal axis 26 'of the coil is prevented on the one hand by the support of the leg 15b on the holding member 35 and on the other hand by the extension 38 engaging behind the nose 39.
  • the switch with closed switch contact I is shown in FIG. To open this switch contact I, the actuating element 24 is pivoted counterclockwise. This has the result that the coupling member 19 is rotated clockwise. Since, as already mentioned, the coupling member 19 rests with the stop part 22 on the extension 17 of the movable contact part 3, during this rotational movement of the coupling member 19 the movable contact part 3 is immediately taken along and moved away from the fixed contact part 2. The two contact elements 8, 9 are thus quickly separated from one another. An arc that forms when switching contact I opens immediately migrates to arc guide plates 7 and 30.
  • the actuating element 24 is pivoted clockwise, which results in a rotation of the coupling member 19 in the counterclockwise direction.
  • This torsional movement of the coupling member 19 is transmitted to the movable contact part 3 via the torsion spring 20.
  • the movable contact part 3 is pressed against the fixed contact part 2 by the torsion spring 20 acting as a contact pressure spring.
  • the magnetic tripping device 4 responds, with the result that the armature 32 is withdrawn. Since its end 32a, as already described, engages the connecting parts 11, 12 of the movable contact part 3, this backward movement of the armature 32 moves the movable contact part 3 away from the fixed contact part 2 and the switching contact I is torn open. At the same time, the trigger element 33 is carried along, whereby the switch trigger mechanism is actuated.
  • the assembly of the magnetic release device 4 and the holder 15 for the movable contact part 3 can be done very simply by plugging the holder 15 onto the magnetic release device 4 in the direction of the longitudinal axis 26 'of the coil body 26.
  • the resilient tongues 36, 37 slightly bent back and then snap back into their rest position, in which, as already mentioned, they press the leg 15a of the holder 15 against the flange 26a of the coil former 26 and thus hold the holder 15 in place.
  • the extension 38 on the leg 15b of the holder 15 interacts with the projecting nose 39 on the holding member 35.
  • the assembly consisting of magnetic release device 4, holder 15, bolt 14, movable contact part 3, coupling member 19 and torsion spring 20 is of a very compact and space-saving design and is not only very easy to assemble, but also can be installed quickly and without difficulty in the switch housing, in which the corresponding units for the other phases and other components le, such as the bimetallic release and the common switch drive, are housed.
  • circuit breaker described can also be designed in different parts differently than as described and illustrated. Only a few of the various possible variants are mentioned below.
  • a projecting rib 42 can be provided on one holding member 34 or 35 or on both holding members 34 and 35, which extends in the direction of the longitudinal axis 26 'of the bobbin 26.
  • This rib 42 engages in a recess 43 provided laterally on the leg 15a of the holder 15.
  • a second recess can be provided on the opposite side edge of the leg 15a, into which a rib engages on the holding member 35.
  • the rib 42 engaging in the recess 43 causes a displacement of the holder 15 in a direction transverse to the effective direction of the tongues 36, 37, i.e. transverse to the bobbin longitudinal axis 26 'prevented. This supports the effect achieved by the extension 38 and the nose 39.
  • the snap connection between the holder 15 and the triggering device 4 can also experience a configuration other than that shown.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Claims (14)

1. Disjoncteur de protection électrique comprenant au moins un contact formé par un élément de contact fixe (2) et un élément de contact mobile (3) et un dispositif de déclenchement magnétique (4) associé audit contact et sur lequel est montée une fixation (15) pour l'élément de contact mobile (3), caractérisé en ce que la fixation (15) est maintenue sur le dispositif de déclenchement magnétique (4) par un assemblage à enclenchement (36, 37).
2. Disjoncteur de protection selon la revendication 1, caractérisé en ce qu'au moins un élément de retenue (34, 35) prévu sur le dispositif de déclenchement magnétique (4) et/ou la fixation (15) est muni d'un élément d'arrêt (36, 37) qui peut s'écarter élastiquement et agit sur la fixation (15) et respectivement sur l'élément de retenue (34, 35).
3. Disjoncteur de protection selon la revendication 2, caractérisé en ce qu'il comprend deux éléments de retenue (34, 35) rattachés à l'armature de bobine (26) de la bobine d'excitation (25) du dispositif de déclenchement magnétique (4) et disposés à distance l'un de l'autre, qui reçoivent entre eux la fixation (15).
4. Disjoncteur de protection selon la revendication 3, caractérisé en ce que chaque élément de retenue (34, 35) est muni d'un élément d'arrêt (36, 37) conformé en languette, la fixation (15) étant immobilisée entre les éléments d'arrêt (36, 37) et une butée, de préférence une bride (26a) conformée sur l'armature de bobine (26).
5. Disjoncteur de protection selon la revendication 4, caractérisé en ce que la fixation (15) est bloquée contre un élément de retenue (35) de façon à empêcher un déplacement transversalement à la direction d'action des éléments d'arrêt (36, 37).
6. Disjoncteur de protection selon l'une des revendications 1 à 5, caractérisé en ce que la fixation (15) est reliée à l'une des extrémité (27b) de l'enroulement (27) de la bobine d'excitation (25) et qu'elle porte un axe de palier (14) sur lequel est monté l'élément de contact mobile (3).
7. Disjoncteur de protection selon la revendication 6, caractérisé en ce que la fixation (15) comprend un élément de guidage de l'arc (30).
8. Disjoncteur de protection selon la revendication 7, caractérisé en ce que l'élément de guidage de l'arc (30) est muni d'un revêtement (31) de matériau ferromagnétique.
9. Disjoncteur de protection selon l'une des revendications 1 à 8, caractérisé en ce que le dispositif de déclenchement magnétique (4) comprend un induit (32) conformé en induit d'attraction destiné à agir sur l'élément de contact mobile (3).
10. Disjoncteur de protection selon l'une des revendications 3 et 9, caractérisé en ce que les éléments de retenue (34, 35) sont munis de guidages (40), de préférence de fentes de guidage, pour le guidage de l'induit (32).
11. Disjoncteur de protection selon l'une des revendications 9 ou 10, caractérisé en ce qu'il comprend un élément déclencheur (33) pour le déclenchement de l'entraînement du disjoncteur, qui peut être actionné par l'induit (32) lors de la réponse du dispositif de déclenchement magnétique (4).
12. Disjoncteur de protection selon la revendication 6, caractérisé en ce que sur l'axe de palier (14) est monté de manière tournante un élément de couplage (19) qui est relié à un élément de manoeuvre (24) de l'entraînement du disjoncteur et qui coopère directement avec l'élément de contact mobile (3) dans le sens de l'ouverture et qui, par l'intermédiaire d'un ressort de pression de contact (20), est en liaison active avec l'élément de contact mobile (3).
13. Disjoncteur de protection selon la revendication 12, caractérisé en ce que le ressort de pression de contact (20) est un ressort à torsion qui prend appui avec l'une de ses extrémités (20a) sur l'élément de couplage (19) et avec l'autre extrémité (20b), sur l'élément de contact mobile (3) et qui pousse l'élément de couplage (19) contre l'élément de contact mobile (3).
14. Disjoncteur de protection selon la revendication 5, caractérisé en ce qu'il est prévu sur au moins l'un des éléments de retenue (35) ou sur la fixation (15) un élément en saillie (42) qui, pour empêcher un mouvement de la fixation (15) transversalement à la direction d'action des éléments d'arrêt (36, 37), coopère svec un élément conjugué, de préférence une rainure (43) sur la fixation (15) et respectivement sur l'élément de retenue (35).
EP87103952A 1986-04-07 1987-03-18 Disjoncteur électrique Expired - Lifetime EP0243648B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1351/86 1986-04-07
CH1351/86A CH670170A5 (fr) 1986-04-07 1986-04-07

Publications (2)

Publication Number Publication Date
EP0243648A1 EP0243648A1 (fr) 1987-11-04
EP0243648B1 true EP0243648B1 (fr) 1990-09-12

Family

ID=4208439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103952A Expired - Lifetime EP0243648B1 (fr) 1986-04-07 1987-03-18 Disjoncteur électrique

Country Status (6)

Country Link
US (1) US4816798A (fr)
EP (1) EP0243648B1 (fr)
JP (1) JP2522938B2 (fr)
CH (1) CH670170A5 (fr)
DE (1) DE3764854D1 (fr)
FI (1) FI84410C (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2629633A1 (fr) * 1988-03-30 1989-10-06 Hager Electro Declencheur magnetique pour disjoncteur
DE29802348U1 (de) * 1998-02-11 1998-04-23 Siemens Ag Elektromagnetischer Stromauslöser für einen elektrischen Schutzschalter
FR2779567B1 (fr) * 1998-06-03 2000-07-13 Hager Electro Sous-ensemble magnetique optimise
FR2806522B1 (fr) * 2000-03-14 2003-09-19 Schneider Electric Ind Sa Dispositif de declenchement magnetique notamment pour disjoncteur, et appareil de protection electrique comportant un tel dispositif
EP2544208B1 (fr) 2011-07-05 2016-04-13 Siemens Aktiengesellschaft Coupe-circuit avec tore magnétique optimisé
EP2544207B1 (fr) * 2011-07-05 2017-03-29 Siemens Aktiengesellschaft Coupe-circuit avec connexion optimisée de la bobine
CN103337424B (zh) * 2013-06-19 2016-01-20 邳州市国龙电器有限公司 一种永磁脱扣器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE479950C (de) * 1928-04-28 1929-07-26 Wilh Kober & Co Haarschneidemaschine
US2060481A (en) * 1934-04-14 1936-11-10 Westinghouse Electric & Mfg Co Electric switch
US2875294A (en) * 1957-01-10 1959-02-24 Arrow Hart & Hegeman Electric Remotely releasable latching attachment for electromagnetic contactors
US3189707A (en) * 1962-04-03 1965-06-15 Fed Pacific Electric Co Coil form adapted for use in magnetictrip circuit breakers
DE1588754B2 (de) * 1967-08-23 1970-10-08 Siemens AG, 1000 Berlin u. 8OOO München Elektrischer Selbstschalter
DE2616554C2 (de) * 1976-04-14 1984-01-12 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer Installationsschalter, insbesondere Leitungsschutzschalter mit Fehlerstromschutzeinrichtung
JPS58169732A (ja) * 1982-03-31 1983-10-06 松下電工株式会社 回路遮断器
FR2527831B1 (fr) * 1982-05-28 1986-08-29 Telemecanique Electrique Noyau plongeur, procede pour le fabriquer et relais a seuil d'intensite ainsi equipe
DE3339400A1 (de) * 1983-10-29 1985-05-09 Sursum Elektrizitätsgesellschaft Leyhausen GmbH & Co, 8500 Nürnberg Selbstschalter mit schlaganker-ausloeser
US4641001A (en) * 1984-06-15 1987-02-03 Mitsubishi Denki Kabushiki Kaisha Circuit interrupter

Also Published As

Publication number Publication date
EP0243648A1 (fr) 1987-11-04
FI84410B (fi) 1991-08-15
FI84410C (fi) 1991-11-25
JP2522938B2 (ja) 1996-08-07
CH670170A5 (fr) 1989-05-12
FI871474A (fi) 1987-10-08
JPS62243222A (ja) 1987-10-23
DE3764854D1 (de) 1990-10-18
US4816798A (en) 1989-03-28
FI871474A0 (fi) 1987-04-03

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