EP1226599B1 - Disjoncteur electrique - Google Patents

Disjoncteur electrique Download PDF

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Publication number
EP1226599B1
EP1226599B1 EP00964170A EP00964170A EP1226599B1 EP 1226599 B1 EP1226599 B1 EP 1226599B1 EP 00964170 A EP00964170 A EP 00964170A EP 00964170 A EP00964170 A EP 00964170A EP 1226599 B1 EP1226599 B1 EP 1226599B1
Authority
EP
European Patent Office
Prior art keywords
switching device
holding body
armature
magnet armature
spring
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
EP00964170A
Other languages
German (de)
English (en)
Other versions
EP1226599A1 (fr
Inventor
Klaus Dauer
Lothar Winzen
Günter Baujan
Rudolf Baumeister
Volker Blechacz
Peter Willerscheidt
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
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 filed Critical Moeller GmbH
Publication of EP1226599A1 publication Critical patent/EP1226599A1/fr
Application granted granted Critical
Publication of EP1226599B1 publication Critical patent/EP1226599B1/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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7463—Adjusting only the electromagnetic mechanism

Definitions

  • the invention relates to an electrical circuit breaker, in particular Motor protection switch, according to the preamble of claim 1.
  • WO-A-9748113 describes a generic protective switching device. This comprises a tripping unit with a magnetic anchor device, which in the trip unit can be used.
  • the separate magnet armature device consists of a sleeve-shaped insulating material, which has a movable armature, a pressed-in insulating material Magnetkem and a coil spring, the movable armature through Support applied to the magnetic core with a spring force.
  • a Push rod available which is supported on one side of the armature and the through the coil spring and a bore of the magnetic core through from the Magnet core protrudes outwards.
  • the movable armature is means bow-shaped Wegbegrenzungsmittel held in the sleeve.
  • This protective switching device also has an insulating material housing with a Switching device and a trip unit with a short circuit sensitive electromagnetic quick release on.
  • the invention is based on the object, a generic switching device to create, which is so simplified in its construction that a more comfortable mounting of the device is possible and the thresholds for the quick release are easier to adjust.
  • a replaceable Unit created for the quick release of a protective device.
  • the unit from the front side (side of the actuator) of the switching device forth in particular can be inserted perpendicular to the front surface of the device, can be fixed in the device.
  • the inventive design is advantageous for devices with at least partially glued in the housing trip units. In a preferred embodiment of the invention, the trip unit is exclusive fixed by gluing in the housing.
  • 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 provided with a connection zone 19 for connection of an overcurrent or bimetallic release 9.
  • a heating conductor 22 in particular by means of a plasma or inert gas welding connection, connected via the connection zone 19 with the connecting piece 6.
  • the heating element 22 is placed in a known manner spirally 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, establishes a secure connection, thereby eliminating quality problems in this respect.
  • the heating element 22 is welded to the passive side of the bimetal 8.
  • the passive side of the bimetal 8 is well suited for welding because only the active side is made of an alloy that is relatively difficult or impossible to 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 in contact with each other without contact and head side to be connected to a coil end of the trigger coil. hereby is built extremely space-saving.
  • 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 joint attachment portion 32 / trigger coil 38, then over the winding of the trigger coil 38 to the Welded connection trip coil 38 / contact element 7 in the Contact element 7 to continue the flow over 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 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 manufactured (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 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 Ausl Harborschulsraum. In this case, the armature 62 is limited by the formed between the upper and lower part of the armature 62 transition plane MA Ü , which cooperates with a particular annular abutment in the interior of the receiving body 60 in its displacement against the tripping direction.
  • 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.
  • the parts carrier is made of thermoplastic and is glued into the housing, which consists of duroplastic, or a housing part, as the other parts carrier of the other phases also.
  • the gluing is done without an additional connection, such as screw or bracing and the like.
  • Adhesive pockets are present on the housing, which are filled with a quantity of approximately 0.010 g of adhesive material.
  • the first pins, or pin pairs, are each formed on the yoke plate while the second pins are formed on the connector. Furthermore, third pins are integrally formed on the yoke plate.
  • pins Glued only metal extensions of sheets, which are referred to here as pins.
  • the pins are spatially distributed to ensure a good stop. There are twelve pins in total. This eliminates any glands. Due to the permanently fixed connection is achieved in a simple manner that the bimetallic position remains stable. Thermal and mechanical stresses are also significantly reduced by the use of the thermoplastic by gluing, while the heat and dimensional stability is ensured.
  • the pre-assembled parts carrier is in the housing in existing for this Chambers inserted.
  • the receiving body (60) Have means for changing the bias of the spring means (64).
  • these means are used as an abutment for the Receiving a spring arm of the torsion spring formed so that these in different postions guarantees different biases.
  • the subject matter of the invention also extends to others Protection devices such as circuit breakers or circuit breakers or like. Also, all features shown in the drawing belong to the Invention, in particular geometry, as shown.

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

Abstract

L'invention concerne un disjoncteur électrique (1), en particulier un disjoncteur à moteur, qui comprend un boîtier (12) constitué d'une matière isolante, un ensemble de contacts de commutation et une unité de déclenchement pourvue d'un déclencheur rapide (10) électromagnétique, comprenant une bobine de déclencheur (38), un noyau magnétique (68), un induit magnétique (62) et un induit d'impact (69). L'objectif de l'invention est de simplifier la structure d'un tel disjoncteur, de telle sorte qu'il puisse être assemblé de façon plus confortable et que les valeurs de réponse destinées au déclencheur rapide puissent être réglées de façon simple. Cet objectif est atteint par le fait que l'induit magnétique (62) est monté, de façon à pouvoir se déplacer axialement, dans un corps de réception (60) constitué d'une matière isolante. Ledit corps de réception (60) loge un ressort (64) qui exerce une sollicitation sur l'induit magnétique (62) dans le sens opposé au sens du mouvement de déclenchement de celui-ci, ledit corps de réception (60) ainsi équipé pouvant être monté, de façon remplaçable, dans l'unité de déclenchement.

Claims (12)

  1. Disjoncteur de protection électrique (1), en particulier disjoncteur de protection de moteur, comprenant:
    un boítier (12) en matériau isolant,
    un agencement à contacts de commutation et
    une unité de déclenchement dotée d'un déclencheur électromagnétique rapide (10) comprenant une bobine de déclenchement (38), un noyau magnétique (68), un induit d'aimant (62) et un induit de butée (69),
    l'induit d'aimant (62) étant monté à déplacement axial dans un corps de réception (60) en matériau isolant,
    le corps de réception (60) recevant un élément à ressort (64) qui sollicite l'induit d'aimant (62) par une force élastique en opposition à la direction de son déplacement de déclenchement, et
    le corps de réception (60) ainsi équipé étant monté de manière à pouvoir être remplacé dans l'unité de déclenchement, caractérisé en ce que
    le noyau magnétique (68) est un composant fixe du déclencheur rapide (10) et en ce que
    le corps de réception équipé (60) est enfiché de manière libérable sur le noyau magnétique (68).
  2. Disjoncteur selon la revendication 1, caractérisé en ce que le corps de réception (60) présente une configuration essentiellement tubulaire et présente une partie inférieure (I) fermée à sa périphérie et dotée d'une extrémité ouverte, partie dans laquelle l'induit d'aimant (62) est guidé par zone et présente une partie supérieure (II) ouverte sur certaines zones de sa périphérie, partie dans laquelle l'induit d'aimant (62) coopère avec l'élément à ressort (64).
  3. Disjoncteur selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le corps de réception (60) est disposé dans une ouverture (29a) d'une tôle de culasse (28) configurée en forme de U du déclencheur rapide (10).
  4. Disjoncteur selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le corps de réception (60) peut être enfiché sur le noyau magnétique (68) par son extrémité qui n'est pas tournée vers la tête de l'induit d'aimant.
  5. Disjoncteur selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le corps de réception (60) et la tôle de culasse (28) présentent des moyens (70, 71) empêchant la rotation qui assurent que le corps de réception (60) ne puisse pas tourner.
  6. Disjoncteur selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément à ressort (64) est un ressort en spirale.
  7. Disjoncteur selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le corps de réception (60) présente des moyens pour modifier la précontrainte du moyen à ressort (64).
  8. Disjoncteur selon la revendication précédente, caractérisé en ce que les moyens sont configurés comme contre-appui pour la réception d'une extrémité du bras du ressort en spirale.
  9. Disjoncteur selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que l'unité de déclenchement est fixée dans le boítier (12) exclusivement par collage.
  10. Disjoncteur selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le boítier (12) est constitué d'un matériau en plastique thermodurcissable.
  11. Disjoncteur selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le corps de réception (60) présente une longueur axiale plus longue que la longueur de l'induit d'aimant (62) en plus de son parcours de déplacement.
  12. Disjoncteur selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que la partie inférieure MA1 de l'induit d'aimant (62) et la partie I1 qui guide la partie inférieure MA1 du corps de réception (60) ont des configurations adaptées l'une à l'autre de telle sorte que l'induit d'aimant (62) soit guidé dans le corps de réception (60) de manière à ne pas pouvoir tourner.
EP00964170A 1999-10-29 2000-09-14 Disjoncteur electrique Expired - Lifetime EP1226599B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19952178A DE19952178A1 (de) 1999-10-29 1999-10-29 Elektrisches Schutzschaltgerät
DE19952178 1999-10-29
PCT/EP2000/008985 WO2001033596A1 (fr) 1999-10-29 2000-09-14 Disjoncteur electrique

Publications (2)

Publication Number Publication Date
EP1226599A1 EP1226599A1 (fr) 2002-07-31
EP1226599B1 true EP1226599B1 (fr) 2003-05-21

Family

ID=7927334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00964170A Expired - Lifetime EP1226599B1 (fr) 1999-10-29 2000-09-14 Disjoncteur electrique

Country Status (5)

Country Link
EP (1) EP1226599B1 (fr)
CN (1) CN1208798C (fr)
AU (1) AU7518600A (fr)
DE (2) DE19952178A1 (fr)
WO (1) WO2001033596A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10324390A1 (de) * 2003-05-30 2004-12-23 Abb Patent Gmbh Elektrische Auslöseeinrichtung für einen elektrischen Schalter
ITBG20060065A1 (it) * 2006-12-21 2008-06-22 Abb Service Srl Dispositivo di protezione per un interruttore automatico e interruttore automatico comprendente tale dispositivo.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2531215A1 (de) * 1975-07-12 1977-02-03 Bbc Brown Boveri & Cie Magnetischer ausloeser
DE3310914A1 (de) * 1983-03-25 1984-09-27 Brown, Boveri & Cie Ag, 6800 Mannheim Magnetausloeser
EP0333650B1 (fr) * 1988-03-15 1993-05-26 ABBPATENT GmbH Transmission de force dans un déclencheur électromagnétique d'un disjoncteur de montage
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
SE512667C2 (sv) * 1996-06-14 2000-04-17 Enpece Sigma Ab Sätt och anordning för strömställararrangemang

Also Published As

Publication number Publication date
CN1387670A (zh) 2002-12-25
DE19952178A1 (de) 2001-05-03
DE50002301D1 (de) 2003-06-26
CN1208798C (zh) 2005-06-29
AU7518600A (en) 2001-05-14
WO2001033596A1 (fr) 2001-05-10
EP1226599A1 (fr) 2002-07-31

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