EP0870315A1 - Induit pour declencheur magnetique - Google Patents

Induit pour declencheur magnetique

Info

Publication number
EP0870315A1
EP0870315A1 EP96942173A EP96942173A EP0870315A1 EP 0870315 A1 EP0870315 A1 EP 0870315A1 EP 96942173 A EP96942173 A EP 96942173A EP 96942173 A EP96942173 A EP 96942173A EP 0870315 A1 EP0870315 A1 EP 0870315A1
Authority
EP
European Patent Office
Prior art keywords
armature
metal strip
sheet metal
anchor
anchor according
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
EP96942173A
Other languages
German (de)
English (en)
Other versions
EP0870315B1 (fr
Inventor
Adolf Tetik
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.)
Felten and Guilleaume Austria AG
Original Assignee
Felten and Guilleaume Austria 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 Felten and Guilleaume Austria AG filed Critical Felten and Guilleaume Austria AG
Publication of EP0870315A1 publication Critical patent/EP0870315A1/fr
Application granted granted Critical
Publication of EP0870315B1 publication Critical patent/EP0870315B1/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

Definitions

  • the invention relates to an armature for actuating the trigger plunger of magnetic triggers for circuit breakers, which is a sheet metal strip formed into a sleeve, and has a stop for taking the trigger plunger with it.
  • An anchor of the type mentioned is known from DE 25 31 215 A.
  • this anchor known from DE 25 31 215 the edges of the sheet metal strip rolled to anchor do not abut one another in regions at the joint.
  • the stop for taking the trigger plunger on the armature is formed by a recess into which a shape of the armature plunger engages.
  • a disadvantage of this known armature is that the sheet-metal strip end surfaces extending in the direction of movement of the magnet armature form an armature slot and are arranged at a distance from one another, so that eddy currents are reduced. Experiments have shown that such an armature with the desired air gap is unsatisfactory in magnetic releases.
  • the invention has for its object to provide a simple to manufacture and effective armature for magnetic triggers for circuit breakers.
  • this object is achieved in that the edges of the sheet metal strip which are aligned parallel to the axis of the armature are at least partially close to one another and in that the stop for the trigger plunger has at least one with the Anchor is integrally formed tongue which is oriented transversely to the axis of the anchor.
  • the armature for magnetic releases proposed according to the invention can not only be deformed e.g. in a rolling process from a corresponding sheet metal blank, e.g. a stamped circuit board, but also offers the advantage of a lower mass than the hitherto used armature for magnetic releases produced by machining. Furthermore, it has surprisingly been found that the armature according to the invention is very advantageous in magnetic triggers because there is no air gap which adversely affects the magnetic properties of the armature, since the edges of the sheet metal strip rolled toward the armature lie at least in regions close to one another.
  • the tongue of the anchor according to the invention which serves as a driver for the release plunger, allows a simple construction of the release plunger and, if desired, this can be carried out as usual, since the shape required in the prior art (DE 25 31 215 A) is not is needed.
  • FIG. 3 shows, partly in section and on a larger scale, the structural unit comprising the guide sleeve, the anchor according to the invention and the release plunger and the return spring,
  • FIG 7 shows another embodiment of the anchor according to the invention.
  • Magnetic releases 1 of the known design shown in FIG. 1 are used in circuit breakers. They consist of a yoke 2 made of magnetically conductive material, to which the carrier 4 of the fixed contact 3 of the circuit breaker, which is made of electrically conductive material, is connected. Furthermore, the magnetic release 1 has an excitation winding 5, which is electrically conductively connected to the line to be protected via terminals (not shown). In the interior of the coil 5, a guide sleeve 6, usually made of plastic, is inserted, which is inserted over a sleeve-shaped stop 7 connected to the yoke 2 of the magnetic release 1.
  • this sleeve-shaped stop 7 is connected to the yoke 2 and the carrier 4 made of electrically conductive material by flanging its tapered shoulder 8, whereby at the same time the connection between the electrically conductive carrier 4, which carries the fixed contact 3, and the yoke 2 is achieved.
  • an armature 10 made of magnetically conductive material is slidably displaceably shown in FIG. 3 and has an inwardly projecting stop at its end 11 facing away from the stop sleeve 7, which stop is formed by a tongue 12 in the exemplary embodiment, and on which supports the end 13 of a trigger plunger 14 received in the interior of the armature 10.
  • a return spring 16 is placed over the tapered, front part 15 of the trigger plunger 14, the front end 17 of which rests on the end 18 of the stop sleeve 7 received inside the magnetic trigger 1 and the trigger plunger 14 is shown in FIG. 3 Standby position.
  • the armature 10 used according to the proposal of the invention in the described magnetic release 1 or a magnetic release of a similar design consists, as shown in FIGS. 4, 5 and 6, of a sheet metal (stamped) part with an essentially rectangular outline, which is formed into a ring or sleeve.
  • the stamped sheet metal part is shaped into a ring (sleeve) in such a way that the edges 20 aligned parallel to the axis of the armature 10 are close together and there is no or only a small air gap at the joint 21 of these edges 20.
  • the sheet metal blank can be bent over when the anchor 10 is manufactured, so that the edges 20 of the sheet metal cut extending in the axial direction are also produced Armatures 10 are at least partially close to one another and there is no air gap which adversely affects the magnetic properties of the armature.
  • the (at least one) radially inwardly angled tongue 12 is provided, which is formed in one piece with the sheet metal part which forms the actual armature 10 in the exemplary embodiment.
  • Cutouts 26 are provided on both sides of the root 25 of the tongue 12 bent at right angles, so that the root 25 of the tongue 12 can be bent so that the tongue 12 extending transversely to the axis of the armature 10 does not cross the adjacent end surface 27 of the armature 10 survives.
  • edges 20 are aligned flat against one another. This can be achieved, for example, simply by these edges 20 protruding obliquely to the plane of the (not yet deformed, that is to say planar) sheet metal part during the manufacture (stamping) of the sheet metal part. leads. In this embodiment, there is practically no air gap in the area of the joint 21.
  • the edges 20 are at a small, acute angle to one another and only abut one another in the region of their inner edges 28.
  • the air gap in the region of the joint 20 is also so small here that it does not significantly adversely affect the desired magnetic properties of the armature 10.
  • any magnetically conductive material is suitable as the material for the armature 10.
  • Soft magnetic materials such as are known per se for direct current relays have proven particularly suitable.
  • the preferably used soft magnetic materials have a magnetic saturation of 1.4 to 2.0 T with a field strength of 4000 A / m.
  • a particularly preferred material for the armature 10 according to the invention is the material described in DIN 17 405 (September 1979) with RFe80 (material number 1.1014), which has a magnetic saturation of 1.6 T with a field strength of 4000 A / m.
  • An armature 10 for magnetic triggers 1 for circuit breakers in particular for circuit breakers, consists of a sheet metal strip formed into a sleeve with an annular cross-sectional shape, the edges 20 of which are aligned with the axis of armature 10, at least in regions lying close together.
  • the stop for taking the trigger plunger 14 with it is a tongue 12 formed integrally with the sheet metal strip and oriented transversely to the axis of the armature 10.
  • the edges 20 in Area of the joint 21 of the armature 10 lie flat against one another.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Magnetic Treatment Devices (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Breakers (AREA)
  • Piles And Underground Anchors (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Magnetic Heads (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Structure Of Transmissions (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

L'invention concerne un induit (10) pour déclencheur magnétique (1) de disjoncteur, notamment pour disjoncteur de puissance, qui comprend un ruban de tôle façonné de manière à produire un manchon de section en anneau de cercle, dont les extrémités (20) alignées par rapport à l'axe de l'induit (10) se rejoignent au moins par endroits. La butée servant à entraîner le poussoir de déclenchement (14) consiste en une languette (12) formée d'un seul tenant avec le ruban de tôle et orientée transversalement à l'axe de l'induit (10). Afin que l'entrefer situé dans la zone de jonction (21) du manchon demeure aussi petit que possible, les arêtes (20) situées dans la zone de jonction (21) de l'induit (10) peuvent s'affleurer.
EP96942173A 1995-12-28 1996-12-18 Induit pour declencheur magnetique Expired - Lifetime EP0870315B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT2111/95 1995-12-28
AT0211195A AT410858B (de) 1995-12-28 1995-12-28 Anker für magnetauslöser
AT211195 1995-12-28
PCT/AT1996/000252 WO1997024746A1 (fr) 1995-12-28 1996-12-18 Induit pour declencheur magnetique

Publications (2)

Publication Number Publication Date
EP0870315A1 true EP0870315A1 (fr) 1998-10-14
EP0870315B1 EP0870315B1 (fr) 1999-09-29

Family

ID=3528017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96942173A Expired - Lifetime EP0870315B1 (fr) 1995-12-28 1996-12-18 Induit pour declencheur magnetique

Country Status (12)

Country Link
EP (1) EP0870315B1 (fr)
AT (2) AT410858B (fr)
AU (1) AU713111B2 (fr)
CZ (1) CZ287121B6 (fr)
DE (1) DE59603247D1 (fr)
ES (1) ES2139395T3 (fr)
GR (1) GR3032197T3 (fr)
HU (1) HU222336B1 (fr)
NO (1) NO312147B1 (fr)
PL (1) PL181900B1 (fr)
SK (1) SK285089B6 (fr)
WO (1) WO1997024746A1 (fr)

Families Citing this family (4)

* 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
DE10126849A1 (de) * 2001-06-01 2002-12-12 Siemens Ag Auslöseanker eines elektromagnetischen Auslösers
DE102015203750B4 (de) * 2015-03-03 2021-05-27 Siemens Aktiengesellschaft Entriegelungsvorrichtung für einen Leistungsschalter und Leistungsschalter
EP3471114B1 (fr) * 2017-10-14 2024-06-26 Hamilton Sundstrand Corporation Noyau lvdt formé d'une feuille métallique

Family Cites Families (5)

* 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
FR2527831B1 (fr) * 1982-05-28 1986-08-29 Telemecanique Electrique Noyau plongeur, procede pour le fabriquer et relais a seuil d'intensite ainsi equipe
DE3310914A1 (de) * 1983-03-25 1984-09-27 Brown, Boveri & Cie Ag, 6800 Mannheim Magnetausloeser
DE3619239A1 (de) * 1986-06-07 1987-12-10 Kloeckner Moeller Elektrizit Schnellausloeser fuer leitungsschutzschalter
DE3904448A1 (de) * 1989-02-15 1990-08-16 Bosch Gmbh Robert Magnetanker

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9724746A1 *

Also Published As

Publication number Publication date
ES2139395T3 (es) 2000-02-01
ATE185219T1 (de) 1999-10-15
AT410858B (de) 2003-08-25
SK285089B6 (sk) 2006-06-01
NO982912L (no) 1998-08-21
GR3032197T3 (en) 2000-04-27
CZ199398A3 (cs) 1998-12-16
HU222336B1 (hu) 2003-06-28
AU1132197A (en) 1997-07-28
AU713111B2 (en) 1999-11-25
NO982912D0 (no) 1998-06-22
HUP9901164A2 (hu) 1999-07-28
WO1997024746A1 (fr) 1997-07-10
ATA211195A (de) 2002-12-15
EP0870315B1 (fr) 1999-09-29
PL327232A1 (en) 1998-12-07
HUP9901164A3 (en) 1999-11-29
CZ287121B6 (en) 2000-09-13
DE59603247D1 (de) 1999-11-04
NO312147B1 (no) 2002-03-25
PL181900B1 (en) 2001-10-31
SK88698A3 (en) 1999-10-08

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