EP1096528B1 - Disjoncteur de protection électrique - Google Patents

Disjoncteur de protection électrique Download PDF

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Publication number
EP1096528B1
EP1096528B1 EP00117608A EP00117608A EP1096528B1 EP 1096528 B1 EP1096528 B1 EP 1096528B1 EP 00117608 A EP00117608 A EP 00117608A EP 00117608 A EP00117608 A EP 00117608A EP 1096528 B1 EP1096528 B1 EP 1096528B1
Authority
EP
European Patent Office
Prior art keywords
switching device
protective switching
electrical protective
magnet armature
holding body
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
EP00117608A
Other languages
German (de)
English (en)
Other versions
EP1096528A1 (fr
Inventor
Manfred Faust
Klaus Dauer
Lothar Winzen
Günter Baujan
Rudolf Baumeister
Volker Blechacz
Peter Willerscheidt
Hartmut Kamp
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
Kloeckner Moeller 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 Moeller GmbH, Kloeckner Moeller GmbH filed Critical Moeller GmbH
Publication of EP1096528A1 publication Critical patent/EP1096528A1/fr
Application granted granted Critical
Publication of EP1096528B1 publication Critical patent/EP1096528B1/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
    • 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
    • H01H2071/249—Electromagnetic mechanisms with part of the magnetic circuit being in the normal current path in the circuit breaker, e.g. yoke, fixed contact and arc-runner are made out of one single conductive element
    • 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
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism

Definitions

  • the invention relates to an electrical circuit breaker, in particular Motor protection switch, according to the preamble of claim 1.
  • circuit breakers From DE 42 08 716C2 and in particular from EP 333 650 such a switching devices are already known. These circuit breakers also have an insulating material with a Switching device and a trip unit with a short circuit sensitive electromagnetic quick release on.
  • Known protective switching devices have a rotationally symmetrical Magnetic anchor for the quick release on. It is also known, the Magnetic armature with a bias to apply through a a spring acting on a head piece of the armature is generated.
  • the invention is based on the object, a generic switching device to create, which is so improved in its construction that a Space-saving and compact design of the device is possible.
  • the armature has instead of two interfaces for e.g. a Anchor torsion spring and a tripping bridge only one interface.
  • Fig. 1 shows an electrical circuit breaker 1, in particular Motor protection switch, with a rotary drive and a rotary head 11 for on and Switching off and displaying tripping in case of overload or short circuit and with a housing 12 which is divided into three housing parts 13, 14, 15.
  • the middle one Housing part 14 has cable entry openings 16 with cable clamps 17.
  • Fig. 2 shows the trip unit of the invention Protective switching device in an exploded view. It includes the Tripping unit a parts carrier 5, to which a connecting piece 6 can be fastened.
  • the parts carrier 5 is advantageously made of a thermoplastic plastic.
  • the connecting piece 6 is made of copper and is L-shaped, wherein the lower outwardly directed leg 18 is provided as a contact tapping for the cable clamp 17.
  • the parts carrier 5 has a fixing pin 23 which projects into a corresponding recess on the lower leg 18 of the connecting piece 6.
  • the upper leg 21 is connected to a connection zone 19 for connection of a Overcurrent or bimetallic release 9 provided.
  • the heating element 22 in a known manner spirally placed around a bimetal 8 and at its other free end, preferably also by means of a plasma or Inert gas welding connection, connected to the bimetal 8.
  • the inert gas welding connection between the copper and the bimetal 8 which is very difficult to weld, becomes a secure connection which eliminates quality issues in this regard.
  • the heating element 22 at the passive side of the bimetal 8 welded.
  • the passive side of the bimetal 8 is well suited for welding because only the active side of a Alloy exists that can be relatively difficult or not weld.
  • the lower end of the bimetal 8 is connected to a yoke plate 28 at an outwardly bent tongue 33 perpendicular.
  • the yoke plate 28 consists of a substantially U-shaped region with two parallel side limbs 29, 31 and a transverse leg 30 connecting them holding the quick release 10, one at the second leg 31 at right angles integrally connected mounting portion 32 and a tongue 33rd
  • a fixing tab is arranged, which in a elongated, provided with Fixiernoppen, latching opening of the parts carrier. 5 intervenes. As a result, the yoke plate 28 is fastened in the part carrier 5.
  • the trip coil 38 of the quick release 10 is its one coil end with the contact element 7 and with its other coil end to the yoke plate 28 connected to the attachment portion 32.
  • the connection also takes place preferably by inert gas or plasma welding.
  • the parallel to the attachment portion 32 extending leg portion of the Contact element 7 is partially provided with recesses to Parts of the yoke plate 28 interlock. This will be extremely built to save space.
  • a slot motor 47 is pre-assembled.
  • the trip unit fixed only by gluing in the housing 12 (i.e. Screwing, locking, bracing or the like).
  • gluing in the housing 12 i.e. Screwing, locking, bracing or the like.
  • special Suitable splices have extensions on the voltage-carrying Share proved.
  • the flow of current in the arranged on the parts carrier 5 parts is made by the lower leg of the connector 6 to the weld Connecting zone 19 / heating element 22, then in the heating element 22nd up to the welded joint heating element 22 / bimetal 8, then via the bimetal 8 up to the welded joint bimetal 8 / yoke plate 28, then over the attachment portion 32 of the yoke plate 28 to the Weld connection attachment section 32 / trip coil 38, then about the winding of the trip coil 38 up to the weld joint Trip coil 38 / contact element 7 in the contact element 7 to Continuation of the current via the with the contact element. 7 cooperating movable contact element.
  • 3a shows a preassemblable unit with a receiving body 60, a Magnetic armature 62 and a spring element 64 in an exploded view.
  • the magnet armature 62 has a first part MA 1 , a second part MA 2 , and a third part MA 3 , wherein the second part MA 2 is arranged between the first part MA 1 and the third part MA 3 .
  • the armature 62 is formed substantially rod-shaped, with its lower part MA 1 has a nearly square cross-section and its upper part MA 2 is formed as a pin-shaped extension significantly smaller and in particular circular cross-section.
  • the upper part MA 2 is advantageously not centric, but arranged offset from the center of the armature 62.
  • the upper part MA 2 is expanded by a preferably plate-like head piece 63.
  • the magnet armature 62 is made of a magnetizable material.
  • the magnet armature body (with the exception of the head piece 63) can for example be easily rotated from a square profile. It can be made by centering the material in the central axis of the square profile, the lower part MA 1 and centering of the material from the center of the profile, the upper part MA 2 made (eg by turning on a lathe).
  • the receiving body 60 is made of insulating material and serves to accommodate the Magnetic armature 62 and the spring element 64.
  • the armature 62 nd longitudinally movable in the, substantially tubular, Receiving body 60 stored.
  • the spring element 64 which is preferably designed as a torsion spring and also in, respectively on, the receiving body 60 is arranged, the armature 62 is opposite its triggering movement direction (here: down) with a spring force applied.
  • the torsion spring supports with its one free end an abutment 66 of the receiving body 60. With her other free End behind the torsion spring engages behind the head 63 of the armature 62 and acts on this by a spring force against his Triggering movement direction.
  • the triggering element 81 is hook-shaped.
  • the receiving body 60 consists essentially of a lower, tubular section I and a head section II.
  • the section I serves in its upper part I 1 of the guide of the armature 62 and in its lower part I 2 of the attachment within the quick release 10.
  • the receiving body 60 in adaptation to the lower part MA 2 of the armature 62th the wall area narrowing the circular cross-section (according to FIG. 3b).
  • the receiving body 60 in its interior in adaptation to the cross section of the magnet armature 62, in particular circular, formed ( Figure 3c).
  • the armature 62 For the mounting of the armature 62 in the receiving body 60 of the armature 62 is preceded by its head 63, introduced from below into the lower part I 2 of the receiving body 60. In a preassembled rest position of the armature 62 is biased within the receiving body 60 by a free, under the head piece 63 of the armature 62 cross, end of the torsion spring against the Auslensezisraum. In this case, the armature 62 is limited by the transition plane formed between upper and lower part of the armature 62 MA Ü , which cooperates with a particular annular abutment in the interior of the receiving body 60 in its displacement against the Auslbücherschisraum.
  • mounted armature 62 is movably mounted between the described rest position and a tripping in the direction of release position.
  • the triggering position is achieved upon the occurrence of a certain magnetic field and thus at a certain short-circuit current level by the longitudinally mounted armature 62 and the fixed magnetic core 68 are magnetized by the generated magnetic field and attract by the magnetic effect.
  • the achievable at a certain current displacement of the armature 62 and the spring force with which the armature 62 is biased against the release movement direction interact.
  • the armature 62 acts on a percussion armor 69, which is guided in regions in the magnetic core 68.
  • the receiving body 60 for attachment to the quick release 10 with its lower open end of section I through an opening 29a of the side leg 29 on the magnetic core 68 of the quick release 10th releasably attached (force-fit).
  • This will be a simple Interchangeability of the preassemblable unit consisting of receiving body 60, armature 62 and spring element 64 guaranteed.
  • This has one facilitated assembly and a simplified dimensioning of Switching devices with respect to their thresholds for short-circuit currents result.
  • the unit 60, 62, 64 is secured against rotation in the short-circuit release 10, have the receiving body 60 and the side legs 29 corresponding Anti-rotation means 70, 71 on.
  • the receiving body 60 preferably with a circumferentially arranged outwardly directed Fixation formed during the side legs 29 in his Opening 29a one cooperating with the fixation process Has recess.

Landscapes

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

Claims (17)

  1. Commutateur de protection électrique (1), notamment disjoncteur de protection, comprenant
    un boítier (12) en matériau isolant,
    un arrangement de contacts de commutation, et
    une unité de déclenchement munie d'un déclencheur rapide électromagnétique (10) comprenant une bobine de déclencheur (38), un noyau magnétique (68), une palette mobile (62) en matériau magnétisable, un élément ressort (64) pour le déclencheur rapide (10) et une palette d'impact (69), avec lequel la palette mobile (62) est logée dans un corps de logement (60) de manière à pouvoir bouger dans le sens longitudinal, avec lequel la palette mobile (62) présente une première partie (MA1), une deuxième partie (MA2) et une troisième partie (MA3), avec lequel la deuxième parie (MA2) est disposée entre la première partie (MA1) et la troisième partie (MA3), avec lequel la deuxième partie (MA2) est réalisée sous la forme d'un prolongement en forme de cheville dont la section transversale est nettement inférieure à celle de la première partie (MA1), avec lequel la troisième partie (MA3) est réalisée sous la forme d'une pièce de tête (63) sur laquelle s'appuie l'élément ressort (64) et avec lequel l'élément ressort (64) est au moins partiellement disposé dans la zone de la deuxième partie (MA2), caractérisé en ce que la deuxième partie (MA2) est disposée non pas de manière centrée, mais décalée par rapport au centre de l'axe de la palette mobile (62).
  2. Commutateur de protection électrique selon la revendication 1, caractérisé en ce que la palette mobile (62) est guidée dans le corps de logement (60) de manière à ne pas pouvoir tourner.
  3. Commutateur de protection électrique selon la revendication 2, caractérisé en ce que la première partie (MA1) présente une section transversale résistante à la torsion.
  4. Commutateur de protection électrique selon la revendication 3, caractérisé en ce que la première partie (MA1) présente un profil carré.
  5. Commutateur de protection électrique selon une ou plusieurs des revendications précédentes, caractérisé en ce que la troisième partie (MA3) est réalisée sous la forme d'une pièce de tête (63) de type plaquette.
  6. Commutateur de protection électrique selon une ou plusieurs des revendications précédentes, caractérisé en ce que la première partie (MA1), la deuxième partie (MA2) et la troisième partie (MA3) sont reliées en une seule pièce en un corps de palette mobile unique.
  7. Commutateur de protection électrique selon la revendication 6, caractérisé en ce que la deuxième partie (MA2) du corps de palette mobile est tournée dans un profilé carré de manière à ce que lors du centrage, l'axe central du profil carré soit décalé par rapport au centre du profil.
  8. Commutateur de protection électrique selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément ressort (64) est un ressort de rotation.
  9. Commutateur de protection électrique selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément ressort (64) est disposé dans ou sur le corps de logement (60), la palette mobile (62) exerçant une force de ressort à l'opposé du sens de son mouvement de déclenchement, l'élément ressort (64) s'appuyant avec son extrémité libre sur une butée (66) du corps de logement (60) et que l'élément ressort (64) saisit la pièce de tête (63) de la palette mobile (62) avec son autre extrémité libre et la palette mobile (62) est ainsi soumise à une force de ressort à l'opposé du sens de son mouvement de déclenchement.
  10. Commutateur de protection électrique selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'extrémité de l'élément ressort (64) qui saisit la pièce de tête (63) vient en prise sur une zone libre (80) de la deuxième partie (MA2) à proximité du centre de l'axe de la palette mobile (62).
  11. Commutateur de protection électrique selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'un élément de déclenchement (81) d'un pont de déclenchement est disposé sur une zone libre (80) de la deuxième partie (MA2) à proximité du centre de l'axe de la palette mobile (62).
  12. Commutateur de protection électrique selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément de déclenchement (81) est en forme de crochet.
  13. Commutateur de protection électrique selon une ou plusieurs des revendications précédentes, caractérisé en ce que le corps de logement (60) est disposé dans une ouverture (29a) d'une tôle de culasse (28) en forme de U du déclencheur rapide (10), que le corps de logement (60) peut être emboíté sur le noyau magnétique (68) avec son extrémité qui s'écarte de la tête de la palette mobile, et que le corps de logement (60) et la tôle de culasse (28) présentent des moyens anti-torsion (70, 71) qui garantissent l'impossibilité de torsion du corps de logement (60).
  14. Commutateur de protection électrique selon une ou plusieurs des revendications précédentes, caractérisé en ce que le corps de logement (60) présente des moyens pour modifier la précontrainte du moyen à ressort (64).
  15. Commutateur de protection électrique selon la revendication précédente, caractérisé en ce que les moyens sont réalisés sous la forme d'une butée pour recevoir une extrémité de bras de ressort du ressort de rotation.
  16. Commutateur de protection électrique selon une ou plusieurs des revendications précédentes, caractérisé en ce que le corps de logement (60) présente une longueur axiale qui est supérieure à la longueur de la palette mobile (62) moins sa course de coulissement.
  17. Commutateur de protection électrique selon une ou plusieurs des revendications précédentes,
    caractérisé en ce que la partie inférieure (MA1) de la palette mobile (62) et la partie (I1) du corps de logement (60), laquelle guide la partie inférieure (MA1), sont configurées par adaptation de l'une par rapport à l'autre de telle manière que la palette mobile (62) est guidée dans le corps de logement (60) sans pouvoir effectuer un mouvement de torsion.
EP00117608A 1999-10-29 2000-08-16 Disjoncteur de protection électrique Expired - Lifetime EP1096528B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19952180 1999-10-29
DE19952180A DE19952180A1 (de) 1999-10-29 1999-10-29 Elektrisches Schutzschaltgerät

Publications (2)

Publication Number Publication Date
EP1096528A1 EP1096528A1 (fr) 2001-05-02
EP1096528B1 true EP1096528B1 (fr) 2004-07-14

Family

ID=7927336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00117608A Expired - Lifetime EP1096528B1 (fr) 1999-10-29 2000-08-16 Disjoncteur de protection électrique

Country Status (2)

Country Link
EP (1) EP1096528B1 (fr)
DE (2) DE19952180A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU782924B2 (en) * 2001-09-24 2005-09-08 Moeller Gebaudeautomation Kg Switching mechanism for a circuit breaker
SG98037A1 (en) * 2001-09-27 2003-08-20 Moeller Gebaudeautomation Kg Switching mechanism for a circuit breaker
CN103632899B (zh) * 2012-08-22 2016-11-09 西门子公司 微型断路器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1096469B (de) * 1959-01-24 1961-01-05 Elektroinstallation Annaberg V Elektromagnetische Schnellausloese-vorrichtung fuer UEberstromschalter, insbesondere Kleinselbstschalter
DE3310914A1 (de) * 1983-03-25 1984-09-27 Brown, Boveri & Cie Ag, 6800 Mannheim Magnetausloeser
ES2043090T3 (es) * 1988-03-15 1993-12-16 Abb Patent Gmbh Transmision de fuerza dentro del sistema de desconexion electromagnetico de un interruptor para el montaje de instalaciones.
FR2674370B1 (fr) * 1991-03-21 1993-10-29 Telemecanique Appareil interrupteur de protection accoupable a un module de commande et/ou a un module de signalisation.
DE4312950A1 (de) * 1993-04-21 1994-10-27 Abb Patent Gmbh Magnetischer Auslöser für ein elektrisches Schaltgerät

Also Published As

Publication number Publication date
DE50007055D1 (de) 2004-08-19
DE19952180A1 (de) 2001-05-03
EP1096528A1 (fr) 2001-05-02

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