EP1226599A1 - Disjoncteur electrique - Google Patents

Disjoncteur electrique

Info

Publication number
EP1226599A1
EP1226599A1 EP00964170A EP00964170A EP1226599A1 EP 1226599 A1 EP1226599 A1 EP 1226599A1 EP 00964170 A EP00964170 A EP 00964170A EP 00964170 A EP00964170 A EP 00964170A EP 1226599 A1 EP1226599 A1 EP 1226599A1
Authority
EP
European Patent Office
Prior art keywords
receiving body
switching device
armature
release
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.)
Granted
Application number
EP00964170A
Other languages
German (de)
English (en)
Other versions
EP1226599B1 (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

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
    • H01H71/2463—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 protective switching device, in particular a motor protection switch, according to the preamble of claim 1.
  • Such a switching device is already known from DE 42 08 716 C2.
  • This protective switching device also has an insulating housing with a
  • the invention has for its object to provide a generic switching device, which is simplified in its construction so that a more convenient installation of the device is made possible and the response values for the quick release are easier to set.
  • a separate module comprising a receptacle body with a magnet armature and a spring element, which can be exchangeably connected, in particular via a non-positive connection to the magnetic core of the quick release, creates an interchangeable unit for the quick release of a protective switching device.
  • the tripping value of a protective switching device can be changed in a simple manner by exchanging this unit according to the invention. costly
  • the unit is advantageous can be fixed in the device from the front (side of the actuator) of the switching device, in particular can be inserted perpendicular to the front surface of the device.
  • the embodiment according to the invention is advantageously suitable for devices with trigger units which are at least partially glued in the housing.
  • the release unit is fixed in the housing exclusively by gluing.
  • Figure 1 a protective switching device according to the invention in perspective view
  • Figure 2 the triggering unit of the protective switching device according to the invention in an exploded view
  • Figure 3a an interchangeable receiving body with magnetic armature and spring element in an exploded view
  • Figure 3b a sectional view of the receiving body along the line A-A in Fig. 3a;
  • Figure 3c a sectional view of the receiving body along the line B-B in Fig. 3a;
  • FIG. 4 a preassembled release unit with a separate preassembled receiving body
  • FIG. 1 shows an electrical protective switching device 1, in particular motor protection switch, with a rotary drive and a rotary head 11 for switching on and off and indicating the triggering in the event of overload or short circuit and with a housing 12 which is divided into three housing parts 13, 14, 15 ,
  • the middle housing part 14 has cable entry openings 16 with cable clamps 17.
  • the trigger unit comprises a parts carrier 5 to which a connector 6 can be attached.
  • the parts carrier 5 advantageously consists of a thermoplastic.
  • the connector 6 is made of copper and is L-shaped, the lower outward leg 18 being provided as a contact tap 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 connector 6.
  • the upper leg 21 is provided with a connecting zone 19 for connecting an overcurrent or bimetal release 9.
  • a heating conductor 22 in particular by means of a plasma or inert gas welding connection, is connected to the connection zone 19
  • the heating conductor 22 is placed in a known manner spirally around a bimetal 8 and connected to the bimetal 8 at its other free end, preferably likewise by means of a plasma or inert gas welding connection.
  • the protective gas welding connection between the copper and the bimetal 8 which is very difficult to weld, creates a secure connection, which eliminates quality problems in this regard.
  • the heating element 22 is welded to the passive side of the bimetal 8 with the shielding gas or plasma welding.
  • the passive side of the bimetal 8 is well suited for welding, because only the active side consists of an alloy that is relatively difficult or impossible to weld.
  • the lower end of the bimetal 8 is vertically connected to a yoke plate 28 on an outwardly bent tongue 33.
  • the yoke plate 28 consists of an essentially U-shaped area with two parallel side legs 29, 31 and one connecting them
  • Cross legs 30 which hold the quick release 10
  • a fastening section 32 which is integrally connected at right angles to the second leg 31 and a tongue 33.
  • a fixing tab is arranged on the fastening section 32, which engages in an elongated, provided with fixing knobs, locking opening of the parts carrier 5. As a result, the yoke plate 28 is fastened in the parts carrier 5.
  • An essentially L-shaped contact element 7 with one of its leg parts is arranged parallel to the fastening section 32 of the yoke plate 28.
  • the trigger coil 38 of the quick release 10 is connected to one end of the coil with the contact element 7 and with the other end of the coil to the yoke plate 28 on the fastening section 32.
  • the connection is also preferably made by inert gas or plasma welding.
  • the leg part of the contact element 7 running parallel to the fastening section 32 is partially provided with cutouts in order to engage without contact with parts of the yoke plate 28 and to be connected on the head side to a coil end of the trigger coil. This makes construction extremely space-saving.
  • a slot motor 47 is preassembled in the lower region of the parts carrier 5.
  • the trigger unit is fixed in the housing 12 exclusively by gluing (ie without screwing, locking, bracing or the like). Extensions on the live parts have proven to be particularly suitable gluing points.
  • the current flow in the parts arranged on the parts carrier 5 takes place from the lower leg of the connecting piece 6 to the welded connection zone 19 / heating element 22, then into the heating element 22 up to the welded connection heating element 22 / bimetal 8, then via the bimetal 8 to to the weld connection bimetal 8 / yoke plate 28, then via the fastening section 32 of the yoke plate 28 to the weld connection fastening section 32 / release coil 38, then via the winding of the release coil 38 to the weld connection release coil 38 / contact element 7 in the contact element 7 for the continuation of the Current over the interacting with the contact element 7 movable contact element.
  • FIG. 3a shows a preassembled unit with a receiving body 60, a magnet armature 62 and a spring element 64 in an exploded view.
  • the magnet armature 62 is essentially rod-shaped, with its lower part MAi having an almost square cross-section and its upper part MA 2 being a pin-shaped extension with a significantly smaller and in particular circular cross-section.
  • the upper part MA 2 is advantageously not arranged centrally, but offset from the center axis of the armature 62. At its free end, the upper part is MA 2 by one preferably expanded plate-like head piece 63.
  • the magnet armature 62 consists of a magnetizable material.
  • the magnet armature body (with the exception of the head piece 63) can, for example, be easily turned from a square profile. By centering the material in the central axis of the square profile, the lower part MAi and, when centering the material from the center of the profile, the upper part MA 2 can be manufactured (eg by turning on a lathe).
  • the receiving body 60 is made of insulating material and serves to receive the magnet armature 62 and the spring element 64.
  • the magnet armature 62 is mounted in a longitudinally movable manner in the essentially tubular receiving body 60.
  • the spring element 64 which is preferably designed as a torsion spring and is also arranged in or on the receiving body 60, the magnetic armature 62 is acted upon by a spring force against its direction of release movement (here: downward).
  • the torsion spring is supported with its one free end on an abutment 66 of the receiving body 60. With its other free end, the torsion spring engages behind the head piece 63 of the magnet armature 62 and in this way acts upon it with a spring force against its direction of release movement.
  • the receiving body 60 consists essentially of a lower, tubular section I and a head section II.
  • the section I is used in its upper part to guide the magnet armature 62 and in its lower part l 2 for fastening within the quick release device 10.
  • the receiving body 60 In its upper part h, the receiving body 60 has the circular cross section narrowing to match the lower part MA 2 of the magnet armature 62 Wall areas on (according to Fig. 3b).
  • the receiving body 60 In its lower part l 2 , which is open at the edge, the receiving body 60 is in its Interior designed to match the cross section of the armature 62, in particular circular (Fig.3c).
  • the magnet armature 62 is biased within the receiving body 60 by a free end of the torsion spring which engages under the head piece 63 of the magnet armature 62, counter to the direction of release movement.
  • the magnet armature 62 is limited in its displacement against the direction of release movement by the transition plane MAu formed between the upper and lower part of the magnet armature 62, which interacts with an in particular annular abutment inside the receiving body 60.
  • the magnet armature 62 mounted in the preassembled unit (60, 62, 64) is movably mounted between the described rest position and a release position located in the direction of release movement.
  • the trigger position is reached when a certain magnetic field strength and thus at a certain short-circuit current level is reached in that the magnet armature 62, which is mounted in a longitudinally movable manner, and the fixed magnetic core 68 are magnetized by the generated magnetic field and attract each other by the magnetic effect.
  • the displacement path of the magnet armature 62 that can be achieved at a specific current strength and the spring force with which the magnet armature 62 is biased against the direction of the movement of the release movement interact. So is the dimensioning of the torsion spring
  • the magnet armature 62 acts (strikes) on an impact armature 69, which is guided in regions in the magnet 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 10 detachably plugged (non-positively).
  • This ensures simple interchangeability of the preassembled unit consisting of the receiving body 60, magnet armature 62 and spring element 64. This has an easier assembly and a simplified dimensioning of the
  • the receiving body 60 and the side legs 29 have corresponding anti-rotation means 70, 71.
  • the receptacle body 60 is preferably formed with a circumferentially arranged outwardly directed fixing extension, while the side leg 29 has in its opening 29a a recess which interacts with the fixing extension.
  • the parts carrier is made of thermoplastic and is glued into the housing, which consists of thermoset, or a housing part, like the other parts carriers of the other phases.
  • the gluing takes place without an additional connection, such as screw connection or bracing and the like.
  • the first pins or pairs of pins are each molded onto the yoke plate while the second pins are molded onto the connector. Furthermore, third pins are molded onto the yoke plate. Only metal extensions of sheet metal, which are referred to here as pins, are glued. The pens are spread out to ensure a good hold. There are a total of twelve pens.
  • the pre-assembled parts carrier is pushed into the housing in the available chambers.
  • the quick release (10) can also be dimensioned by changing the spring preload.
  • the receiving body (60) can have means for changing the pretension of the spring means (64).
  • these means are designed as abutments for receiving a spring arm of the torsion spring, so that it ensures different preloads in different positions.
  • the subject matter of the invention also extends to other protective switching devices such as circuit breakers or circuit breakers or the like. All features shown in the drawing also belong to the invention, in particular geometry, as shown. LIST OF REFERENCE NUMBERS

Landscapes

  • 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.
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 true EP1226599A1 (fr) 2002-07-31
EP1226599B1 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 (3)

* 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.
CN110459446B (zh) * 2019-08-22 2024-08-06 浙江中亿豪科技有限公司 一种可有效灭弧的多接线式小型断路器

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
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
SE512667C2 (sv) * 1996-06-14 2000-04-17 Enpece Sigma Ab Sätt och anordning för strömställararrangemang

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0133596A1 *

Also Published As

Publication number Publication date
AU7518600A (en) 2001-05-14
DE19952178A1 (de) 2001-05-03
EP1226599B1 (fr) 2003-05-21
CN1208798C (zh) 2005-06-29
WO2001033596A1 (fr) 2001-05-10
DE50002301D1 (de) 2003-06-26
CN1387670A (zh) 2002-12-25

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