EP2077571A1 - Elektromagnetischer Schaltschütz - Google Patents

Elektromagnetischer Schaltschütz Download PDF

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Publication number
EP2077571A1
EP2077571A1 EP08166526A EP08166526A EP2077571A1 EP 2077571 A1 EP2077571 A1 EP 2077571A1 EP 08166526 A EP08166526 A EP 08166526A EP 08166526 A EP08166526 A EP 08166526A EP 2077571 A1 EP2077571 A1 EP 2077571A1
Authority
EP
European Patent Office
Prior art keywords
coil
winding
magnetic circuit
passage
contactor
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
EP08166526A
Other languages
English (en)
French (fr)
Other versions
EP2077571B1 (de
Inventor
Alain Portier
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.)
ABB France SAS
Original Assignee
ABB France SAS
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 ABB France SAS filed Critical ABB France SAS
Publication of EP2077571A1 publication Critical patent/EP2077571A1/de
Application granted granted Critical
Publication of EP2077571B1 publication Critical patent/EP2077571B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
    • 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
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements

Definitions

  • the present invention relates to an electromagnetic contactor.
  • An electromagnetic contactor has the main function of closing and opening a circuit according to the presence of a control voltage.
  • the means for withstanding the voltage dips may be constituted by an energy buffer system mounted at the terminals of the contactor coil.
  • this system increases the complexity and the cost of the contactor.
  • the technical problem underlying the invention is therefore to provide a contactor for obtaining a resistance during recesses or voltage interruptions improved manner regardless of the size of the contactor while maintaining a simple structure of contactor, without oversizing its magnetic circuit.
  • the subject of the present invention is a contactor of the aforementioned type, characterized in that the means for holding the troughs or interruptions of tension comprise a rim extending, starting from the wall, around the opening, so that this flange is external to the axial passage defined by the winding of the coil.
  • the passage surface of the flow between the fixed part and the movable part is increased at the edge, the latter being opposite the moving part.
  • the permeance in the closed state of the magnetic circuit is increased, without encroaching on the winding zone situated opposite the moving part and without requiring oversizing of the magnetic circuit.
  • the rim extends, from the wall, around the opening, towards the interior of the housing.
  • the internal dimensions of the winding of the coil are greater than the dimensions of the passage section delimited by the flange.
  • the internal dimensions of the winding of the coil are smaller than the external dimensions of the flange.
  • the contactor comprises a carcass for carrying out the winding of the coil around it, the carcass comprising a housing for receiving the rim.
  • the carcass comprises a wall separating the flange of the axial passage in which the moving part moves.
  • the flange consists of a single piece with the lid.
  • the rim is constituted by a separate element of the lid.
  • the moving part of the magnetic circuit is subjected to a surface protection treatment that does not produce non-magnetic deposit at the point of contact between the fixed part and the mobile part of the magnetic circuit.
  • the surface treatment is a phosphating treatment.
  • Phosphating treatment for example with zinc and / or iron, makes it possible to obtain sufficient protection and maximum permeance.
  • an electromagnetic contactor according to the invention comprises a not shown insulating housing intended to be fixed on a support.
  • a movable contact holder 5 is integrally mounted with the movable portion 4 of the magnetic circuit.
  • the contact carrier 5 comprises movable contacts intended to be in contact with fixed contacts, or separated from these fixed contacts, according to the position of the mobile part 4 to close or open an electrical power circuit.
  • Elastic means in the form of a spring 6 make it possible to return the mobile part 4 to its rest position when the coil 2 is not powered.
  • the fixed part 3 of the magnetic circuit comprises a body 8 comprising a cylindrical portion and a bottom at one end of the cylindrical portion.
  • the body thus forms an open cavity forming a housing in which the coil 2 is received.
  • the fixed part 3 of the magnetic circuit also comprises a cover 9 intended to partially close the housing, forming a wall in which is formed a through opening 7 allowing the passage of the movable portion 4 of the magnetic circuit.
  • the body 8 comprises, in withdrawal from the edge of the cavity, a shoulder 10 making it possible to place the edge of the cover 9.
  • the movable portion 4 has a cylindrical shape whose diameter allows it to enter the passage opening 7 and to move in an axial passage 12 around which is formed the winding of the coil 2.
  • This winding of the coil extends between a first end 2a close to the passage opening 7 and a second end 2b remote from the passage opening 7.
  • the axial passage is delimited longitudinally by two end sections S1, S2 corresponding at both ends 2a, 2b of the winding.
  • a flange 13 is formed from the cover 9, around the opening 7 formed towards the inside of the housing formed in the fixed part 3.
  • This flange 13 extends, with respect to the inner surface of the cover 9, over a length ° L less than or equal to the distance D separating the winding from the inner surface of the cover 9.
  • the flange 13 is external to the axial passage delimited by the winding of the coil 2.
  • the flange 13 is constituted, in the embodiment shown, in one piece with the lid. According to one variant, the flange 13 is constituted by an element attached to the lid.
  • the inside diameter d1 of the winding of the coil is greater than the diameter d2 of the passage section delimited by the flange 13.
  • the inner diameter d1 of the winding of the coil is smaller than the outer diameter d3 of the flange 13.
  • the contactor comprises a carcass 14 making it possible to wind the coil 2 around it at a tubular portion delimiting by its wall the axial passage in which the mobile part 4 moves.
  • the carcass also comprises a housing 17 intended to receive the rim 13 of the opening 7.
  • the wall of the tubular portion separates the flange 13 from the axial passage 12 which it delimits, making it possible to avoid direct contact between the moving part 4 and the fixed part 3 of the armature at the rim 13.
  • the axial passage 12 has a diameter d4 smaller than the diameter d2 of the passage section delimited by the rim 13.
  • the fixed parts 3 and mobile 4 have tapered portions 18, 19 facing each other.
  • the fixed portion 3 comprises a convex conical portion 18, disposed on the bottom of the body 8.
  • the movable portion has a concave conical portion 19.
  • the concave portion could be positioned on the fixed portion and the convex portion on the moving part.
  • the two conical portions 18, 19 are of a shape adapted to provide an air gap between them when both fixed and moving parts are in contact.
  • the flat end ends of the two conical parts do not come into contact when the fixed and moving parts are in contact.
  • the points of contact are between the mobile part 4 and the fixed part 3 between an annular end portion 20 of the movable part and the bottom of the body of the fixed part.
  • the surface treatment is a phosphating treatment with zinc and / or iron.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
EP20080166526 2008-01-07 2008-10-14 Elektromagnetischer Schaltschütz Active EP2077571B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0800070A FR2926160B1 (fr) 2008-01-07 2008-01-07 Contacteur electromagnetique

Publications (2)

Publication Number Publication Date
EP2077571A1 true EP2077571A1 (de) 2009-07-08
EP2077571B1 EP2077571B1 (de) 2013-08-21

Family

ID=39672585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080166526 Active EP2077571B1 (de) 2008-01-07 2008-10-14 Elektromagnetischer Schaltschütz

Country Status (3)

Country Link
EP (1) EP2077571B1 (de)
CN (2) CN201311886Y (de)
FR (1) FR2926160B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI480377B (zh) * 2013-04-02 2015-04-11 Genereach Biotechnology Corp Methods for detecting Bacillus anthracis

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816320A1 (de) * 1968-12-21 1970-07-09 Bosch Gmbh Robert Elektromagnetisches Relais
US3575676A (en) * 1969-11-04 1971-04-20 Gen Electric High-speed, high-current solenoid
EP0365274A2 (de) * 1988-10-21 1990-04-25 Ericson Manufacturing Company Rückstellbarer Fehlerstromschalter
EP0789378A1 (de) 1996-02-07 1997-08-13 Asea Brown Boveri Ab Ausrüstung eines elektromagnetischen Schalters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816320A1 (de) * 1968-12-21 1970-07-09 Bosch Gmbh Robert Elektromagnetisches Relais
US3575676A (en) * 1969-11-04 1971-04-20 Gen Electric High-speed, high-current solenoid
EP0365274A2 (de) * 1988-10-21 1990-04-25 Ericson Manufacturing Company Rückstellbarer Fehlerstromschalter
EP0789378A1 (de) 1996-02-07 1997-08-13 Asea Brown Boveri Ab Ausrüstung eines elektromagnetischen Schalters

Also Published As

Publication number Publication date
FR2926160A1 (fr) 2009-07-10
FR2926160B1 (fr) 2009-12-25
CN101483119A (zh) 2009-07-15
CN201311886Y (zh) 2009-09-16
EP2077571B1 (de) 2013-08-21

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