EP1878037A2 - Dispositif de declenchement electromagnetique pour appareil d'installation electrique - Google Patents

Dispositif de declenchement electromagnetique pour appareil d'installation electrique

Info

Publication number
EP1878037A2
EP1878037A2 EP06753408A EP06753408A EP1878037A2 EP 1878037 A2 EP1878037 A2 EP 1878037A2 EP 06753408 A EP06753408 A EP 06753408A EP 06753408 A EP06753408 A EP 06753408A EP 1878037 A2 EP1878037 A2 EP 1878037A2
Authority
EP
European Patent Office
Prior art keywords
yoke
leg
actuator according
electromagnetic actuator
magnetic core
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.)
Withdrawn
Application number
EP06753408A
Other languages
German (de)
English (en)
Inventor
Jürgen Christmann
Klaus-Peter Eppe
Peter Pfirrmann
Ralf Weber
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.)
ABB AG Germany
Original Assignee
ABB Patent 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
Application filed by ABB Patent GmbH filed Critical ABB Patent GmbH
Publication of EP1878037A2 publication Critical patent/EP1878037A2/fr
Withdrawn legal-status Critical Current

Links

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
    • H01H71/12—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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H2050/365—Stationary parts of magnetic circuit, e.g. yoke formed from a single sheet of magnetic material by punching, bending, plying
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • 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
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements

Definitions

  • the invention relates to an electromagnetic trigger for an electrical installation device, in particular for a circuit breaker.
  • Circuit breakers have an electromagnetic and a thermal release of which contribute to the elimination of the switching device in the event of an overcurrent and the electromagnetic release on occurrence of a short-circuit current, the thermal release. While the thermal release only acts on a latching point within a switch lock, which is coupled to a movable contact lever, to unlatch it, the electromagnetic release opens the contact lever immediately upon impact of a short-circuit current; At the same time, the electromagnetic release also actuates the switch lock so that the switching device is permanently open.
  • Electromagnetic actuators usually have a yoke bent into a box shape surrounding a coil, a magnet armature and a magnetic core, wherein the magnet armature and the magnet core are accommodated within a coil former are; the magnetic core is attached as a separate rotary member to the yoke leg, which faces the contact lever, so that when the short-circuit current of the core helps to pull the anchor into the interior of the coil so that the striker can act on the contact lever.
  • Such an electromagnetic trigger is used in the switch S2 from ABB Stotzmaschine GmbH, Heidelberg.
  • the object of the invention is to simplify an electromagnetic release of the type mentioned.
  • the yoke and the magnetic core is formed as a one-piece, U-shaped bent stamped part, whose first leg serves as a magnetic core.
  • the magnetic core is formed by a separate rotary member
  • the magnetic core with the yoke forms an integral component which can be produced in one operation.
  • the leg can serve as such as a magnetic core without further notice, so that a pronounced core is eliminated.
  • the core is formed by a depression in the first leg.
  • a notch or deflection may be provided, which protrudes parallel to the web of the yoke to the other leg according to claim 4.
  • This training is formed at the free end of the first leg.
  • the deflection may be U-shaped, wherein the web of the U-shape is parallel to the Jochsteg and project the legs of the deflection perpendicular to it;
  • the ends of the bend facing the other leg may be provided with a cover plate in which there is an opening through which the striker pin engages and is guided.
  • the fetlock spring can reach into the area between the legs of the deflection, so that the legs partially surround the restraining spring; in another embodiment, the fetlock spring is between the stepping between the first and second portions of the striker and the end plate.
  • a coil tube may be provided, whose inner diameter corresponds to the outer diameter of the end plate and which serves to guide the armature with the switching pin.
  • FIGS. 1 and 2 show two different embodiments of an electromagnetic release without a coil
  • An electromagnetic actuator is formed, as mentioned above, of a magnetic yoke, a coil, an armature and a core, wherein the armature is connected to a striker, which acts directly on the contact lever of an electrical circuit breaker.
  • FIG. 5 shows a first embodiment of a yoke 10 according to the invention.
  • This yoke has a yoke web 11, on which two yoke legs 12 and 13 are formed, the yoke legs 12, 13 forming a U-shape together with the yoke web.
  • the first leg 12 serves as a magnetic core, wherein in the leg 12, an opening 14 is provided, through which a striker (see below) can reach through.
  • the other leg 13 has a niksegmentför- shaped recess 15 in which, as shown below, the armature is mounted and guided.
  • a V-shaped notch 16 is provided, which has a surface 17 which is used as a fixed contact piece for the circuit breaker use.
  • a notch for the fixed contact piece is prior art and not relevant to the present invention.
  • the first leg 12 of the yoke 10 is used without further measures as a magnetic core; in the embodiment of FIG. 6 is located on the yoke web 11, which corresponds to the yoke land 11 of FIG. 5 identically, a first leg 18 and a leg 13 corresponding second leg, which has also received the reference numeral 13 to the similarities with the Embodiment of FIG. 5 represent.
  • the first leg 18 has approximately in its center a recess 19 which has a cup shape whose bottom 20 is directed towards the leg 13 and which projects from the inner surface of the first leg 18 to the second leg 13.
  • the pot bottom 20 has an opening 21 which corresponds to the opening 14 and through which the striker pin of an armature is guided.
  • the recess 19 is effected by a deep drawing operation.
  • Fig. 3 shows a further embodiment of the invention.
  • a yoke 30 has a first leg 31 and a second leg 32 which corresponds to the leg 13 of Figures 5 and 6. Furthermore, a notch 34 is provided on the Jochsteg 33, which corresponds to the notch 16 of FIG. 5.
  • a deflection 35 is provided which has a U-shape, the Ausbiegungssteg 36 parallel to the yoke 33.
  • Ausbiegungssteg 36 Ausbiegungsschenkel 37, 38 are formed, which are perpendicular to the Ausbiegungssteg 36 and thus perpendicular to the Jochsteg 33, also perpendicular to the yoke legs 31 and 32; they jump in the same direction as the yoke legs 31 and 32.
  • the interior 39 of the U-shape serves to guide a switching pin (see below) and a restraining spring (see also below).
  • FIG. 4 shows a U-shaped yoke 40, with a yoke web 41, on which a first yoke leg 42 and a second yoke leg 43 are integrally formed. Between the first yoke leg and the Jochsteg 41 is a V-shaped formation 44, which corresponds to the formation 16 and to which a fixed contact piece is attached.
  • the free end of the first yoke leg has a bend 45 with two legs 46 and 47, which are connected to an only partially visible web portion 48; At the end edge of the legs 46 and 47 is a closing plate 49 which is connected to the web portion 48 and is integrally formed thereon so as to be perpendicular to the web 48.
  • This end plate 49 has a passage opening 50 in which a striker of an electromagnetic armature is guided.
  • FIGS. 3 to 6 show a magnetic yoke, on which the magnet armature is directly and directly molded.
  • Figures 1 to 6 show different shapes and configurations of a magnetic yoke;
  • the magnetic yoke according to FIG. 2 with the deflection for forming the fixed contact piece and FIG. 4 with respect to the yoke legs as shown in FIG. 5 or in FIG.
  • the embodiment of the yoke leg 49 with the bend 44 can also be used with a notch instead of the formation, e.g. represented by the reference numeral 34 in FIG.
  • a sheet metal part 74 is placed from magnetically conductive material, which surrounds the first portion 72 only partially.
  • radially projecting strips 75 and 76 are formed, whose outer diameter corresponds to the first portion with the attached sheet metal part 74, so that the sheet metal part 74 is held on the first section.
  • the first portion is provided with a recess 77 which extends in the axial direction, so that the sheet metal part 74 is held on the first portion 72.
  • a striker 80 is provided with a first portion 81 and a second portion 82, both having different diameters.
  • the first portion 81 is surrounded by a metal tube 83, which consists of magnetically good conducting material and thus forms the anchor.
  • the second section then acts, just like the section 73 of the embodiment according to FIG. movable contact piece or the movable contact lever of the circuit breaker, in which the electromagnetic release is used.
  • FIG. 1 shows the yoke 30 with the armature 70 of FIG. 7.
  • the striker 73 protrudes beyond the first yoke leg 31 and between the bar 75 and a stop in the region of the two legs 37 and 38 is a restraining spring 90 which moves back to its original position after triggering the anchor or with the example Tripping behavior of the shutter can be adjusted.
  • the yoke 40 with the end plate 49 is used as the yoke
  • the armature is that according to FIG. 8 with the striking pin 80 and the first section 81 and the second section 82 as well as the cylindrical sheet metal part 83, which consists of magnetically conductive material and thus together with the striker 80 forms the anchor; between the end plate 49 and the gradation between the first and the second portion of the striker 80 is a restraining spring 91 corresponding to the restoring springs 90.
  • the magnet armature together with the restraint spring 91 is surrounded by a coil tube 92, which is guided in the recess 15 (see FIG. 1) and whose inner diameter corresponds to the outer diameter of the outer contour 49a of the circular part of the end plate.
  • the sheet switch associated istbo- genlöschbleche is in the region of the outer surface of the yoke bridge; the free legs of the yoke project towards the front of the circuit breaker.

Landscapes

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

Abstract

La présente invention concerne un dispositif de déclenchement électromagnétique destiné en particulier à un disjoncteur électrique ou à une zone de contact, présentant une culasse, une bobine, un noyau magnétique et un induit magnétique. Selon l'invention, à l'apparition d'un courant de court-circuit, le dispositif agit sur un levier de contact mobile pour réaliser une ouverture directe de la zone de contact, et sur un verrou de connexion pour maintenir la zone de contact ouverte. La culasse et le noyau magnétique se présente sous la forme d'une seule pièce découpée, arquée en forme de U, dont la première branche sert de noyau magnétique.
EP06753408A 2005-04-30 2006-04-25 Dispositif de declenchement electromagnetique pour appareil d'installation electrique Withdrawn EP1878037A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510020167 DE102005020167A1 (de) 2005-04-30 2005-04-30 Elektromagnetischer Auslöser für ein elektrisches Installationsgerät
PCT/EP2006/003793 WO2006117097A2 (fr) 2005-04-30 2006-04-25 Dispositif de declenchement electromagnetique pour appareil d'installation electrique

Publications (1)

Publication Number Publication Date
EP1878037A2 true EP1878037A2 (fr) 2008-01-16

Family

ID=36615651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06753408A Withdrawn EP1878037A2 (fr) 2005-04-30 2006-04-25 Dispositif de declenchement electromagnetique pour appareil d'installation electrique

Country Status (4)

Country Link
EP (1) EP1878037A2 (fr)
CN (1) CN101218655B (fr)
DE (1) DE102005020167A1 (fr)
WO (1) WO2006117097A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008012149A1 (de) * 2008-03-01 2009-09-03 Abb Ag Schaltgerät
AT509278A1 (de) * 2008-03-20 2011-07-15 Moeller Gebaeudeautomation Gmbh Auslösemodul für ein schaltgerät
AT509279A1 (de) * 2008-07-31 2011-07-15 Moeller Gebaeudeautomation Gmbh Schaltgerät
EP2251887B1 (fr) 2009-05-15 2016-03-16 Abb Ag Dispositif de déclenchement électromagnétique
CN101894714B (zh) * 2010-07-13 2012-05-30 韩俊 一种电磁断电器
CN105762035A (zh) * 2016-04-27 2016-07-13 乐清市也为电气有限公司 一种漏电脱扣和电磁脱扣一体化的脱扣系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19845476B4 (de) * 1998-10-02 2004-08-12 Aeg Niederspannungstechnik Gmbh & Co Kg Magnetsystem für Leitungsschutzschalter
DE10126854A1 (de) * 2001-06-01 2002-12-19 Siemens Ag Magnetjoch eines elektromagnetischen Auslösers
DE10126849A1 (de) * 2001-06-01 2002-12-12 Siemens Ag Auslöseanker eines elektromagnetischen Auslösers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006117097A3 *

Also Published As

Publication number Publication date
DE102005020167A1 (de) 2006-11-09
WO2006117097A2 (fr) 2006-11-09
WO2006117097A3 (fr) 2007-01-18
CN101218655A (zh) 2008-07-09
CN101218655B (zh) 2012-12-26

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