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EP0306383B1 - Déclencheur magnétique à articulation à couteau - Google Patents

Déclencheur magnétique à articulation à couteau Download PDF

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Publication number
EP0306383B1
EP0306383B1 EP19880402089 EP88402089A EP0306383B1 EP 0306383 B1 EP0306383 B1 EP 0306383B1 EP 19880402089 EP19880402089 EP 19880402089 EP 88402089 A EP88402089 A EP 88402089A EP 0306383 B1 EP0306383 B1 EP 0306383B1
Authority
EP
European Patent Office
Prior art keywords
blade
knife
pallet
armature
trip device
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
EP19880402089
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0306383A1 (fr
Inventor
Michel Bonniau
Patrick Guillon
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.)
Merlin Gerin SA
Original Assignee
Merlin Gerin SA
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 Merlin Gerin SA filed Critical Merlin Gerin SA
Publication of EP0306383A1 publication Critical patent/EP0306383A1/fr
Application granted granted Critical
Publication of EP0306383B1 publication Critical patent/EP0306383B1/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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/26—Parts movable about a knife edge
    • 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
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H01H71/323—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with rotatable armature

Definitions

  • the invention relates to an electromagnetic trip device with magnetic latching, in particular for a differential switch or circuit breaker comprising a U-shaped armature, the ends of the two legs of which constitute two coplanar pole surfaces, a pivoting pallet coming in the armed position of the trigger to stick. on said two pole surfaces for closing the magnetic circuit constituted by the armature and the pallet, a permanent magnet for polarizing said magnetic circuit and a trip coil surrounding the magnetic circuit, said pallet being pivotally mounted along the outer edge of the one of said pole surfaces, and cooperating with a bearing face integral with the frame, to position the pallet longitudinally.
  • a known trigger (FR-A-2261614) comprises a pivoting pallet having cutouts for positioning the pallet.
  • the edge of the knife coincide with the outer edge of the polar surface of the reinforcement on the side of the joint.
  • the cutting of the pallet is in the immediate vicinity of the polar surface thereof and when removing the burrs due to the stamping of the cutting, it is practically inevitable to damage the polar surface.
  • the choice of the material of the pallet is moreover determined by the magnetic properties, and this material generally does not have sufficient hardness to constitute a knife of a joint.
  • the present invention aims to allow the production of a high sensitivity electromagnetic trigger, in which the treatment of the pallet and more particularly of its pole surfaces, is independent of the articulation of the pivoting pallet.
  • the electromagnetic trip device is characterized in that the pivot line of the pallet is defined by a knife joint whose knife belongs to an independent retaining piece, rigidly secured to the pallet, which said retaining piece carries stops which in combination with said knife cooperate with a bearing face integral with the frame, to position the pallet longitudinally and limit the longitudinal displacements of the pallet relative to the frame and avoid wear and dispersion due to the displacements and that the retaining part has overhanging edges folded in a square which laterally frame the pallet and the edge of which is cut in a bevel to form a knife for the articulation of the pallet.
  • the retaining part is for example of steel, while the pallet can be of an iron-nickel alloy, of suitable magnetic property.
  • the retaining part may be a plate, which is fixed to the pallet by welding at the end of manufacture, in particular after treatment of the polar surfaces of the pallet.
  • the pallet is biased in the detachment position by a spring arranged so as to hold the knife against its bearing surface. The longitudinal movement of the pallet, corresponding to detachment of the knife from its bearing face, is limited by stops arranged opposite the knife on the retaining part secured to the pallet.
  • the bearing face (s) of the knife of the joint are formed on a plate rigidly fixed to the frame and having two legs which project from the pole surface of the frame to fit between the knife and the stops carried by the retaining part.
  • the material of this plate is of course chosen to constitute with the knife an articulation with low friction and high operating reliability.
  • the magnetic circuit of a high-sensitivity electromagnetic trip device consists of a U-shaped frame 10 and a pivoting pallet 12.
  • the ends of the two arms 14, 16 of the frame 10 are arranged in polar surfaces 18 , 20 arranged in the same plane, against which surfaces, the pallet 12 is applied in the armed position of the trigger.
  • the arm 14 of the armature 10 carries a coil 22, and between the arms 14,16 is interposed a permanent magnet 24 for polarizing the armature 10.
  • the pallet 12 can pivot on an axis coinciding with the outer edge 26 of the pole surface 20 and it is biased in the detached position by a spring 28.
  • the assembly is housed inside a housing 30 crossed by control pins 32.
  • the pallet 12 is constituted by a rectangular plate of length greater than the spacing of the branches 14,16, so as to project beyond the side of the articulation 26 for the anchoring of the return spring 28.
  • This plate 12 is chosen from an appropriate magnetic material and undergoes treatments, in particular polishing, necessary for the production of optimal polar surfaces.
  • On the pallet 12 is fixed in the area of the articulation, a retaining part 34 which projects laterally from the pallet 12 and the branch 16 of the frame 10.
  • the retaining part 34 in the form of a plate, for example in steel is pressed against the upper face of the pallet 12 opposite the pole surfaces and is rigidly fixed to this pallet 12 by welding, for example by two welding points 36.
  • the two projecting edges of the retaining piece 34 are folded in at square 38 , 40 for laterally framing the pallet 12 and the edges of these brackets 38.40 are cut at a bevel to form knives 42 of the articulation of the pallet 12.
  • a plate 44 ending in two legs 46,48 projecting from the pole surface 20 of the frame 10.
  • the two legs 46,48 are arranged opposite the folded brackets 38,40 and the knives 42 come to bear on these legs 46.48 which constitutes ent the bearing face of the joint.
  • the return spring 28 is slightly inclined so as to exert a component for supporting the knives 42 on the legs 46, 48.
  • the legs 46, 48 are inserted between the knives 42, and retaining stops 50, 52, limiting the longitudinal movement of the pallet 12.
  • the knife joint 42 unidirectionally positions the pallet 12 in the longitudinal direction, leaving the pallet complete freedom to press down on the surfaces polar 18.20.
  • the knives 42 are aligned with the outer edge 26 of the pole surface 20 which constitutes the pivot axis of the pallet 12.
  • the pallet 12 pivots while being guided by the knives 42 and the edge 26, which avoids any relative movement of friction between the pole surfaces of the frame 10 and of the pallet 12.
  • the guiding functions are entirely ensured by the retaining part 34 which is arranged accordingly while the pallet 12 only performs the magnetic functions of closing and opening the magnetic circuit of the trip device.
  • the retaining part 34 can be arranged differently, and in particular be constituted by a machined part, fixed in any way to the pallet 12.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Breakers (AREA)
  • Scissors And Nippers (AREA)
EP19880402089 1987-09-03 1988-08-11 Déclencheur magnétique à articulation à couteau Expired - Lifetime EP0306383B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8712343 1987-09-03
FR8712343A FR2620264B1 (fr) 1987-09-03 1987-09-03 Declencheur magnetique a articulation a couteau

Publications (2)

Publication Number Publication Date
EP0306383A1 EP0306383A1 (fr) 1989-03-08
EP0306383B1 true EP0306383B1 (fr) 1993-04-07

Family

ID=9354656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880402089 Expired - Lifetime EP0306383B1 (fr) 1987-09-03 1988-08-11 Déclencheur magnétique à articulation à couteau

Country Status (6)

Country Link
EP (1) EP0306383B1 (es)
JP (1) JP2765865B2 (es)
CN (1) CN1018685B (es)
DE (1) DE3880055T2 (es)
ES (1) ES2040878T3 (es)
FR (1) FR2620264B1 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2107935B1 (es) * 1994-09-12 1998-10-01 Saez M Luisa Delgado Mejoras introducidas en la fabricacion de reles.
FR2823369B1 (fr) * 2001-04-06 2003-10-24 Realisation De Disjoncteurs So Declencheur electromagnetique comportant un circuit electromagnetique reposant sur un socle deformable elastiquement et declencheur electromagnetique comprenant une bobine flottante
DE10117340C1 (de) * 2001-04-06 2002-10-10 Siemens Ag Elektromagnetisches Auslöserelais
FR2823370B1 (fr) * 2001-04-06 2003-10-24 Realisation De Disjoncteurs So Declencheur electromagnetique comprenant une armature mobile et une armature fixe sur laquelle est encliquetee une piece de guidage de l'armature mobile
FR2823371B1 (fr) * 2001-04-06 2004-11-26 Realisation De Disjoncteurs So Declencheur electromagnetique comportant un circuit electromagnetique dont l'armature mobile est apte a occuper trois positions d'equilibre stable
FR2874740B1 (fr) * 2004-09-02 2006-10-20 Schneider Electric Ind Sas Declencheur electromagnetique et appareil de coupure electrique le comportant
FR2877137B1 (fr) * 2004-10-21 2006-12-22 Schneider Electric Ind Sas Declencheur electromagnetique et appareil de protection electrique le comportant
DE102007010946B4 (de) * 2006-06-14 2018-03-08 Eaton Industries Gmbh Überlastauslöser für ein mehrpoliges elektrisches Schaltgerät
DE102012202084A1 (de) 2012-02-13 2013-08-14 Siemens Aktiengesellschaft Klappankerlagerung für magnetischen Auslöser
CN104282508B (zh) * 2014-10-13 2016-08-24 浙江正泰电器股份有限公司 一种带有脱扣机构的电磁跳闸装置
US11538650B1 (en) * 2021-10-22 2022-12-27 Siemens Industry, Inc. Air gap driving mechanism of a solid-state circuit breaker includes permanent magnet(s) for contact separation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4026226Y1 (es) * 1964-07-29 1965-09-06
FR1541052A (fr) * 1967-08-11 1968-10-04 Ind Electr De La Seine L Déclencheur électro-magnétique ultra-sensible
FR2261614A1 (en) * 1974-02-14 1975-09-12 Gardy Ste Francaise High sensitivity mechanical relay or contact breaker - for use in differential switching circuits
JPS5550168A (en) * 1978-10-09 1980-04-11 Tokyo Kinzoku Kk Overcurrent detector for electric circuit

Also Published As

Publication number Publication date
ES2040878T3 (es) 1993-11-01
JPH01157026A (ja) 1989-06-20
JP2765865B2 (ja) 1998-06-18
CN1018685B (zh) 1992-10-14
DE3880055T2 (de) 1993-10-14
FR2620264B1 (fr) 1989-12-01
CN1032604A (zh) 1989-04-26
DE3880055D1 (de) 1993-05-13
FR2620264A1 (fr) 1989-03-10
EP0306383A1 (fr) 1989-03-08

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