EP0081604B1 - Couple de noyaux en fer, et corps de bobine pour protection en courant alternatif - Google Patents

Couple de noyaux en fer, et corps de bobine pour protection en courant alternatif Download PDF

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Publication number
EP0081604B1
EP0081604B1 EP81110410A EP81110410A EP0081604B1 EP 0081604 B1 EP0081604 B1 EP 0081604B1 EP 81110410 A EP81110410 A EP 81110410A EP 81110410 A EP81110410 A EP 81110410A EP 0081604 B1 EP0081604 B1 EP 0081604B1
Authority
EP
European Patent Office
Prior art keywords
armature
pair
central leg
coil
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.)
Expired
Application number
EP81110410A
Other languages
German (de)
English (en)
Other versions
EP0081604A1 (fr
Inventor
Alex Blum
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.)
Rockwell Automation Switzerland GmbH
Original Assignee
Sprecher und Schuh 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 Sprecher und Schuh AG filed Critical Sprecher und Schuh AG
Priority to AT81110410T priority Critical patent/ATE21296T1/de
Priority to DE8181110410T priority patent/DE3175082D1/de
Priority to EP81110410A priority patent/EP0081604B1/fr
Priority to US06/382,759 priority patent/US4491816A/en
Priority to JP57118325A priority patent/JPS58139640A/ja
Publication of EP0081604A1 publication Critical patent/EP0081604A1/fr
Application granted granted Critical
Publication of EP0081604B1 publication Critical patent/EP0081604B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/163—Details concerning air-gaps, e.g. anti-remanence, damping, anti-corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/10—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current
    • H01F7/12—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current having anti-chattering arrangements
    • H01F7/1205—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current having anti-chattering arrangements having short-circuited conductors

Definitions

  • the invention relates to the electromechanical converter of an AC contactor with an E-shaped armature and a U-shaped or E-shaped core, such as in the Swiss P.S. 552 278 or in German publication DE-A-2 844 361.
  • Two mutually influencing, undesirable properties of such transducers are the hum caused by the AC voltage in the attracted state, and the tendency of the movable and fixed magnetic core part to stick to one another as a result of remanence.
  • Two known measures to counteract these phenomena are, on the one hand, the use of short-circuit rings and, on the other hand, a shaping of the pole faces, which ensures that suitable air gaps remain in the area of contact between the core and armature, even when tightened.
  • this version requires two coils - which is expensive - and moreover, the lack of a direct ferromagnetic adhesion of core and armature gives rise to a hum, which requires the use of a special attenuator on at least one of the outer legs.
  • the short-circuit rings which consist of an electrically highly conductive, non-ferromagnetic material, such as hard copper or brass, are also attached in the area of the outer legs, in such a way that the ratio of the ring-enclosed pole faces to the non-enclosed causes optimal suppression of the hum.
  • an air gap is usually provided in the tightened state in the region of the central leg or limbs, which sufficiently reduces the remanence force.
  • a bending vibration of the magnetic core parts lying on the front sides of their outer legs can occur, and the residual hum caused thereby can hardly be suppressed.
  • the pole faces that come to lie on each other on the outer legs and the surfaces that delimit the air gap must be ground with a relatively low tolerance, because not only must the gap be exactly correct, but the outer contact surfaces must also be exactly aligned with one another.
  • the manufacturing cost of such magnetic core parts is correspondingly high and the invention aims to provide an AC contactor with good operating properties which can be produced more economically.
  • this construction result in part from the fact that the contact surface of the two magnetic core parts, which is created when tightened, is relatively small and, above all, coherent.
  • this contact surface consists of two sub-surfaces which are spaced apart from one another and which have to be aligned very precisely in order to ensure that both magnetic core parts are in good contact with one another.
  • alignment either requires costly precise punching out of the sheets, or post-processing, for example by grinding the pole faces after the sheet stack has been joined together.
  • the greatest extent of the contact area of the construction according to the invention is relatively small, so that before the package is finally riveted together, all the sheets within this area can be aligned precisely enough to make regrinding occasionally unnecessary.
  • the air gap on the outer legs tolerates much larger tolerances because its cross-section is larger than in the case of non-inclined boundary surfaces.
  • Such an oblique course of the opposing surfaces on the outer legs has already been proposed, but of course only for an arrangement in which these surfaces are contact surfaces and not only limits of the air gap.
  • the relatively large extent of these surfaces requires a high degree of machining precision, and the difficulty in optimally attaching a short-circuit ring in the area of such inclined surfaces has also limited their use on DC devices.
  • the armature has a middle leg which is guided through the fixed coil body, which results in a better ratio of the length and width of the guide in comparison with the outer guide, and thus increases the functional reliability.
  • the figure shows two axial half-sections of an embodiment of the invention, on the left in the non-tightened state, on the right in the tightened state. It designates 1 the movable armature, 2 the core, 3 the coil body, 4 the Coil of the electromagnet.
  • the immovable coil body 3 made of insulating material also forms the guide for the middle leg of the E-shaped armature 1, which consists of a sheet metal stack held together by rivets 5.
  • the E-shaped core 2 is also constructed identically.
  • the central web of the anchor in FIG. 7 lies on the somewhat shorter central web of the core.
  • a short-circuit ring 6 is inserted in the latter to suppress the hum. To simplify the assembly, this ring can also be held in its position by means of corresponding projections of the coil former, in a manner not shown.
  • the outer legs of both magnetic core pieces are chamfered on their opposing front surfaces 8, 9 and are dimensioned such that there is still an air gap 10 between them when the center webs in FIG. 7 are mutually abutting.
  • the beveling of the outer legs enables the stroke to be increased for a given attraction force and, on the other hand, has a certain centering effect when tightening, in particular as long as the area between the levels 11, 12 at the ends of the bevels and normal to these is the bobbin and the central web of the anchor in an area 13 where they are in mutual engagement.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Transformers For Measuring Instruments (AREA)

Claims (4)

1. Couple de noyaux de fer et corps de bobine pour un relais à courant alternatif comportant un noyau et un induit, l'une au moins de ces pièces étant réalisée sous la forme d'un E tandis que la branche centrale de ladite pièce canalise le flux magnétique principal, caractérisés en ce que la branche centrale de la pièce en forme-de E s'applique, dans la position d'attraction, sur la pièce opposée et en ce qu'au moins la branche centrale de l'une des pièces ou la zone de celle-ci, tournée vers la branche centrale de la pièce opposée, porte un anneau de court-circuit, et en ce que, dans la position d'attraction, il subsiste entre les branches extérieures de chacune des deux paires de branches extérieures, un entrefer dont les surfaces de délimitation sont inclinées, par rapport à la direction de déplacement de l'induit.
2. Couple de noyaux de fer et corps de bobine selon la revendication 1, caractérisés par un noyau en forme de E et un induit en forme de E.
3. Couple de noyaux de fer et corps de bobine selon l'une des revendications précédentes, caractérisés en ce que l'induit comporte une branche centrale guidée dans le corps de bobine.
4. Couple de noyaux de fer et corps de bobine selon l'une des revendications précédentes, caractérisés en ce que l'anneau de court-circuit est supporté par le corps de bobine.
EP81110410A 1981-12-14 1981-12-14 Couple de noyaux en fer, et corps de bobine pour protection en courant alternatif Expired EP0081604B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT81110410T ATE21296T1 (de) 1981-12-14 1981-12-14 Eisenkernpaar und spulenkoerper fuer wechselstromschuetz.
DE8181110410T DE3175082D1 (en) 1981-12-14 1981-12-14 Pair of iron cores, and coil form bobbin for alternating current protection
EP81110410A EP0081604B1 (fr) 1981-12-14 1981-12-14 Couple de noyaux en fer, et corps de bobine pour protection en courant alternatif
US06/382,759 US4491816A (en) 1981-12-14 1982-05-27 Transducer for alternating current limiter
JP57118325A JPS58139640A (ja) 1981-12-14 1982-07-07 １対の磁気部品とコイル支持ボビンよりなる交流付勢の電磁開閉器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81110410A EP0081604B1 (fr) 1981-12-14 1981-12-14 Couple de noyaux en fer, et corps de bobine pour protection en courant alternatif

Publications (2)

Publication Number Publication Date
EP0081604A1 EP0081604A1 (fr) 1983-06-22
EP0081604B1 true EP0081604B1 (fr) 1986-08-06

Family

ID=8188068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81110410A Expired EP0081604B1 (fr) 1981-12-14 1981-12-14 Couple de noyaux en fer, et corps de bobine pour protection en courant alternatif

Country Status (5)

Country Link
US (1) US4491816A (fr)
EP (1) EP0081604B1 (fr)
JP (1) JPS58139640A (fr)
AT (1) ATE21296T1 (fr)
DE (1) DE3175082D1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3314900A1 (de) * 1983-04-25 1984-10-25 Gerhard Dipl.-Ing. 4630 Bochum Mesenich Elektromagnet fuer ventile
FR2560429B1 (fr) * 1984-02-28 1987-06-19 Telemecanique Electrique Electro-aimant silencieux et contacteur utilisant un tel electro-aimant
FR2561818B1 (fr) * 1984-03-20 1988-04-15 Telemecanique Electrique Dispositif de declenchement rapide a maximum de courant
EP0160121B1 (fr) * 1984-03-31 1990-01-10 Square D Company (Deutschland) Gmbh Electro-aimant pour appareils de commutation électrique, notamment pour contacteurs
FR2568402B1 (fr) * 1984-07-24 1987-02-20 Telemecanique Electrique Electro-aimant a courant continu, en particulier pour appareil electrique de commutation
GB2221349B (en) * 1986-03-24 1990-07-04 Lectron Products A solenoid assembly and fluid control valve assembly including such solenoid assembly
US4840411A (en) * 1987-02-13 1989-06-20 Harrow Products, Inc. Electromagnetic shear lock
US5010310A (en) * 1988-06-16 1991-04-23 General Signal Corporation Alternating current immunized relay and method of immunizing a relay to alternating current
US4981312A (en) * 1988-06-29 1991-01-01 Harrow Products, Inc. Electromagnetic shear lock
US5016929A (en) * 1989-06-13 1991-05-21 Harrow Products, Inc. Electromagnetic shear lock
US5010312A (en) * 1990-04-10 1991-04-23 Rostra Engineered Components Solenoid actuators
US5132596A (en) * 1991-09-18 1992-07-21 Pacific Scientific Company Outdoor lighting controls
US5352101A (en) * 1992-10-05 1994-10-04 Aura Systems, Inc. Electromagnetically actuated compressor valve
US5355108A (en) * 1992-10-05 1994-10-11 Aura Systems, Inc. Electromagnetically actuated compressor valve
DE19915692A1 (de) * 1999-04-07 2001-03-08 Tyco Electronics Logistics Ag Magnetsystem für ein Relais
DE19922424C2 (de) * 1999-05-14 2003-04-30 Siemens Ag Elektromagnetischer Stellantrieb
DE10146899A1 (de) * 2001-09-24 2003-04-10 Abb Patent Gmbh Elektromagnetischer Aktuator, insbesondere elektromagnetischer Antrieb für ein Schaltgerät
US7053742B2 (en) * 2001-12-28 2006-05-30 Abb Technology Ag Electromagnetic actuator having a high initial force and improved latching
DE102004002528A1 (de) * 2004-01-12 2005-08-04 Siemens Ag Elektromagnetischer Linearantrieb
WO2007044008A1 (fr) * 2005-10-11 2007-04-19 Otis Elevator Company Electro-aimant et coupleur de portes d'ascenseur
US8212638B2 (en) * 2008-12-10 2012-07-03 General Electric Company Electromagnet for an electrical contactor
CN103827765B (zh) * 2011-09-30 2016-09-07 英特尔公司 在耦合与解耦状态之间切换的电感器
WO2015172824A1 (fr) * 2014-05-14 2015-11-19 Abb Technology Ltd Actionneur basé sur bobine de thomson

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US750132A (en) * 1904-01-19 Illius augustus timmis and edgar william timmis
US506282A (en) * 1893-10-10 Illitjs augustus timmis
US2407963A (en) * 1943-01-11 1946-09-17 Mcquay Norris Mfg Co Solenoid
FR1452916A (fr) * 1965-08-06 1966-04-15 Cem Comp Electro Mec Perfectionnement aux électro-aimants
DE1813770C3 (de) * 1968-12-10 1973-11-08 Siemens Ag, 1000 Berlin U. 8000 Muenchen Klappankerrelais fur Wechsel strom
DE1909856A1 (de) * 1969-02-27 1970-09-10 Merk Gmbh Telefonbau Fried Elektromagnet mit Tauchanker
CH552278A (de) * 1973-07-03 1974-07-31 Sprecher & Schuh Ag Wechselstromschuetz.
PL103022B1 (pl) * 1975-05-15 1979-05-31 Elektromagnes pradu zmiennego
FR2406885A1 (fr) * 1977-10-18 1979-05-18 Telemecanique Electrique Electro-aimant pour contacteur alimente en courant continu

Also Published As

Publication number Publication date
EP0081604A1 (fr) 1983-06-22
ATE21296T1 (de) 1986-08-15
US4491816A (en) 1985-01-01
DE3175082D1 (en) 1986-09-11
JPH0373976B2 (fr) 1991-11-25
JPS58139640A (ja) 1983-08-19

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