EP1469500B1 - Système magnétique pour un relais à armature pivotante - Google Patents

Système magnétique pour un relais à armature pivotante Download PDF

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Publication number
EP1469500B1
EP1469500B1 EP20030008656 EP03008656A EP1469500B1 EP 1469500 B1 EP1469500 B1 EP 1469500B1 EP 20030008656 EP20030008656 EP 20030008656 EP 03008656 A EP03008656 A EP 03008656A EP 1469500 B1 EP1469500 B1 EP 1469500B1
Authority
EP
European Patent Office
Prior art keywords
hinged armature
yoke
magnet system
armature
magnet
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 - Fee Related
Application number
EP20030008656
Other languages
German (de)
English (en)
Other versions
EP1469500A1 (fr
Inventor
Jürgen Bross
Josef Herschberger
Maximilian Kellner
Stephan Kleine
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DE50307420T priority Critical patent/DE50307420D1/de
Priority to EP20030008656 priority patent/EP1469500B1/fr
Publication of EP1469500A1 publication Critical patent/EP1469500A1/fr
Application granted granted Critical
Publication of EP1469500B1 publication Critical patent/EP1469500B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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 a magnet system for a hinged armature relay with a U-shaped yoke according to the preamble of claim 1.
  • a magnet system is known for example from DE 2029 607 A and DE 30 08 783 A.
  • Folding armature magnet systems are commonly used in residual current (RCD) or residual current (DI) circuit breakers.
  • the pole face of the magnetic yoke over which the hinged armature can be tilted is exposed to a particular wear, in particular due to the low-loadable soft magnetic material.
  • By resulting in opening and closing of the hinged armature abrasion or Aufsch on the tilting edge the air gap between the hinged armature and the magnetic yoke changes, whereby the response of the magnet system is not affected in an undesirable manner. Because of the typically high sensitivity of hinged armature magnet systems, even minor wear or contamination effects are relevant.
  • the magnetic system known from DE 41 10 660 C2 has an additional armature support member on the yoke pole, on which the hinged armature is tiltably mounted.
  • Another way to increase the wear resistance of a hinged armature magnet system for example, in the use of galvanic coatings of the magnetic parts. In any case, the design and manufacturing costs are considerably increased by the wear protection measures.
  • the invention has for its object to provide a magnetic system for a hinged armature relay, which has a structurally simple design, a particularly low dependence of the tripping of the number of cycles.
  • an electromagnetic relay which comprises a magnetic yoke and a relay winding arranged on a coil body.
  • an armature can not be tilted over an edge in the region of one of the Jochpol inhabit of the magnetic yoke, but tilted over an edge adjacent to the Jochpol constituent the yoke, which is arranged on the side facing the bobbin.
  • the armature is mounted on a projection of the coil flange, which belongs to the bobbin on which the winding is applied.
  • This magnetic system is constructed in a manner known in principle as a hinged armature system, wherein essential parts of the system a U-shaped, in cross section preferably rectangular magnetic yoke, arranged on a bobbin, as well Exciting coil called relay winding, as well as in the folded, ie closed state on both yoke poles of the magnetic yoke resting hinged armature are.
  • the hinged armature can be tilted over the Jochpol of that leg of the magnetic yoke, which is not surrounded by the relay winding.
  • a support element is provided for wear protection, which is formed integrally with the bobbin.
  • a bearing surface of the integrally formed with the bobbin as a combination part supporting element for the hinged armature is preferably arranged at least approximately parallel to the adjacent pole face of the magnetic yoke.
  • the bearing surface if the hinged armature rests on both pole faces of the legs of the magnetic yoke, at least slightly further spaced from the hinged armature than the Jochpol
  • the hinged armature rests on the bearing surface of the support body and tilts in the further movement of a second bearing surface formed by the support body.
  • the tilting axis of the hinged armature thus displaced during the tilting movement of the surrounded with the excitation coil leg of the magnetic yoke away.
  • the lever arm formed by the hinged armature between the leg of the magnet yoke carrying the coil and the tilting axis is shorter than at a larger opening angle of the hinged armature.
  • located in the extension of the hinged armature second lever arm which projects beyond the magnetic yoke and is generally spring-loaded, at the beginning of the tilting motion in comparison to the further movement relatively long.
  • the support body comprising the bobbin and the support element preferably has an angled shape, either an L- or a U-shape, wherein the relay winding surrounds a so-called coil leg and the support element is formed by a longitudinal leg aligned substantially parallel to the hinged armature.
  • An additional leg in the case of the U-shaped design of the support body is optionally arranged parallel to the support member having longitudinal leg opposite this.
  • a permanent magnet can be positioned with a particularly small distance from the hinged armature by the longitudinal leg and possibly the opposite leg has or have a corresponding breakthrough in the region between the legs of the magnetic yoke. Like the permanent magnet, the yoke legs of the magnetic yoke also penetrate the longitudinal leg.
  • the bobbin is preferably integrally connected by means of so-called support flanks with the support element.
  • the supporting flanks surround the yoke legs having the first tilting axis such that the hinged armature does not touch the supporting flanks, i. no corresponding friction surfaces between moving parts are given.
  • the support flanks are preferably thickened in the direction of extension of the yoke leg compared to the adjoining region of the longitudinal limb, whereby the longitudinal limb of the support body is mechanically reinforced in the region of an opening for the yoke limb adjacent to its support element.
  • a holding frame connected to the hinged armature is preferably provided, which surrounds the Jochpol lake and is fixed on the longitudinal leg of the bobbin.
  • the advantage of the invention is in particular that in a hinged armature magnet system, a support of the hinged armature is realized on the tilting axis by suitable design of the bobbin without additional component.
  • FIGS. 1 and 2 show the structure of a magnet system 1 for a hinged armature relay, which comprises a magnetic yoke 2 with a first yoke leg 3 and a second yoke leg 4 and a hinged armature 5.
  • the first yoke leg 3 penetrates a coil leg 7 of a support body 8 surrounded by a relay winding or exciting coil 6, which is manufactured as a plastic injection molded part and whose shape is shown in more detail in FIGS. 3 and 4.
  • a permanent magnet 9 which attracts the hinged armature 5.
  • the magnetic effect of the relay coil 6 is opposite to the magnetic effect of the permanent magnet 9.
  • the hinged armature 5 rests on in each case one Jochpol nature 11,12 of the first yoke leg 3 and second yoke leg 4.
  • a tilting edge 13 for the hinged armature 5 is formed.
  • the Jochpol nature 12 adjacent is a bearing surface 14 as part of a support member formed by the support body 8 15 for the hinged armature 5.
  • the support member 15 is integrally formed on a longitudinal leg 16, which forms a bobbin 17 together with the coil leg 7, which carries the excitation coil 6.
  • the support member 15 and the bobbin 17 comprehensive support body 8 is formed in the illustrated embodiment as a one-piece plastic injection molded part, to which the longitudinal leg 16 parallel opposite a base leg is formed.
  • the base leg 18 is mechanically connected to a base plate 19, the support body 1 by means of several Snap-in elements 20 carries and also the articulation of the tension spring 10 is used.
  • the coil leg 7 may also be attached directly to a base plate, in which case the base leg 18 may be omitted.
  • the bobbin 17 constructed from the coil leg 7 and the longitudinal leg 16 and the support element 15 form a unitary support body 8.
  • the one support point for the hinged armature 5 forming support member 15 has a second tilting edge 21, about which the hinged armature 5 is tilted.
  • the second tilting edge 21 is slightly spaced from the hinged armature 5 in the folded state, so that it initially rotates when the magnet system 1 responds around the first tilting edge 13 formed by the magnetic yoke 2.
  • the bearing surface 14 already after a short tilting movement of the hinged armature 5 contacted the bearing surface 14, so that in the further movement only the second tilting edge 21 is effective.
  • the wear on the Jochpol requirements 12 is minimized thereby.
  • the hinged armature 5 has a first lever arm 22, 22 'which extends from a front edge 23, which is arranged in the region of the yoke pole surface 11 of the first yoke leg 3 when the hinged armature 5 is folded, to the first tilting edge 13 or to the second tilting edge 21 , Furthermore, the hinged armature 5 in extension of the first lever arm 22, 22 'has a second lever arm 24, 24', which extends from the first tilting edge 13 or from the second tilting edge 21 to a trailing edge 25 on which the tension spring 10 attacks.
  • the hinged armature 5 already lifts off from the first tilting edge 13 shortly after the magnetic system 1 responds, ie already at a low opening angle, and only loads the second tilting edge 21.
  • a slight wear on the tilting edge 21 formed by the support body 8 is practically irrelevant to the release characteristics of the magnet system 1, since the hinged armature 5 rests exclusively on the yoke pole surfaces 11, 12 in the folded-on state.
  • the bearing surface 14 of the longitudinal limb 16 is at least slightly spaced, for example by a few hundredths of a millimeter, from the yoke pole surfaces 11, 12.
  • the support element 15 is connected to the bobbin 17 by means of two supporting flanks 26, which release an opening 27 for the second yoke leg 4. Furthermore, an opening 28 for the permanent magnet 9 is provided in the longitudinal leg 16.
  • the hinged armature 5 is connected to the longitudinal leg 16 of the support body 8 by means of a holding frame 29, which connects on the one hand in the region of the tilting edges 13,21 to the hinged armature 5 and on the other hand, the support flanks 26 and the Jochpol vom 11,12 embracing, flat on the longitudinal leg 16th rests.
  • FIGS 6a and 6b show in each case in a schematic cross-sectional view of a detail of the storage of the hinged armature 5 in the switching device according to FIG 5.
  • the hinged armature 5 is in lifted, i. open position (FIG. 6a) or in closed, i. on the Jochpolvid 11,12 resting position (FIG 6b).
  • the bearing surface 14 is only slightly spaced therefrom with the hinged armature 5 closed, while the bearing leg 16 is spaced slightly further away from the hinged armature 5 in the region between the yoke legs 3, 4. A resting of the hinged armature 5 on the bearing leg 16 in this area is thus excluded.
  • the magnet system 1 is characterized in particular by a low number of parts as well as a low material and assembly outlay, whereby a high degree of independence of the release characteristics is achieved by the switching cycle number.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Claims (6)

  1. Système magnétique pour un relais à armature pivotante, comportant une culasse (2) magnétique, un bobinage (6) de relais disposé sur un corps (17) de bobine, une armature (5) pivotante pouvant basculer sur un bord (13) dans la région d'une (12) des faces polaires de la culasse (2) magnétique, et un élément (15) d'appui pour soutenir l'armature (5) pivotante sur le bord (13), élément qui est réalisé d'un seul tenant avec le corps (17) de bobine sous forme de corps (8) de soutien,
    caractérisé en ce qu'une surface (14) de palier du corps (8) de soutien, laquelle soutient l'armature (5) pivotante pendant son mouvement de basculement, est, lorsque l'armature (5) pivotante est appliquée contre les faces (11, 12) polaires de la culasse, au moins légèrement plus distante de ladite armature que la face (12) polaire de la culasse qui est associée au bord (13).
  2. Système magnétique selon la revendication 1,
    caractérisé en ce que le corps (8) de soutien est une pièce moulée par injection.
  3. Système magnétique selon la revendication 1 ou 2,
    caractérisé en ce que le corps (8) de soutien possède une forme coudée dotée d'une branche (7) formant bobine, entourée par le bobinage (6) de relais, et d'une branche (16) longitudinale, orientée essentiellement parallèlement à l'armature (5) pivotante et sur laquelle est formé l'élément (15) d'appui.
  4. Système magnétique selon la revendication 3,
    caractérisé en ce que le corps (8) de soutien possède une branche (18) de base qui se raccorde à la branche formant bobine et est parallèle à la branche (16) longitudinale en lui faisant face.
  5. Système magnétique selon la revendication 3 ou 4,
    caractérisé en ce que la branche (16) longitudinale comporte une ouverture (28) pour un aimant (9) permanent disposé entre les branches (3, 4) de la culasse (2) magnétique.
  6. Système magnétique selon l'une des revendications 3 à 5, caractérisé en ce que l'armature (5) pivotante est assemblée à déplacement à la branche (16) longitudinale au moyen d'un cadre (29) de maintien qui entoure les faces (11, 12) polaires de la culasse sur la branche (16) longitudinale.
EP20030008656 2003-04-15 2003-04-15 Système magnétique pour un relais à armature pivotante Expired - Fee Related EP1469500B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE50307420T DE50307420D1 (de) 2003-04-15 2003-04-15 Magnetsystem für ein Klappankerrelais
EP20030008656 EP1469500B1 (fr) 2003-04-15 2003-04-15 Système magnétique pour un relais à armature pivotante

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030008656 EP1469500B1 (fr) 2003-04-15 2003-04-15 Système magnétique pour un relais à armature pivotante

Publications (2)

Publication Number Publication Date
EP1469500A1 EP1469500A1 (fr) 2004-10-20
EP1469500B1 true EP1469500B1 (fr) 2007-06-06

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EP20030008656 Expired - Fee Related EP1469500B1 (fr) 2003-04-15 2003-04-15 Système magnétique pour un relais à armature pivotante

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EP (1) EP1469500B1 (fr)
DE (1) DE50307420D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2877137B1 (fr) * 2004-10-21 2006-12-22 Schneider Electric Ind Sas Declencheur electromagnetique et appareil de protection electrique le comportant
CN108074785A (zh) * 2017-12-12 2018-05-25 上海良信电器股份有限公司 一种电磁式脱扣器
CN113611576A (zh) * 2021-09-08 2021-11-05 哈尔滨工业大学 一种单永磁复合衔铁电磁机构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2029607C3 (de) * 1970-06-16 1974-07-18 Felten & Guilleaume Schaltanlagen Gmbh, 4150 Krefeld Kunststoffgehäuse für Relais
US3833869A (en) * 1973-11-09 1974-09-03 Amp Inc Electromechanical relay
DE3008783C2 (de) * 1980-03-07 1984-04-19 Standard Elektrik Lorenz Ag, 7000 Stuttgart Relais mit einem Winkelanker
DE8325986U1 (de) * 1983-09-09 1983-12-29 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Relais
DE3838444A1 (de) * 1988-11-12 1990-05-17 Felten & Guilleaume Energie Magnetsystem fuer schnellabschaltung
DE9103978U1 (de) * 1991-04-02 1991-06-27 Felten & Guilleaume Energietechnik AG, 51063 Köln Magnetsystem für ein schnellabschaltendes Klappankerrelais
AT410724B (de) * 1994-10-10 2003-07-25 Tyco Electronics Austria Gmbh Relais
DE20007905U1 (de) * 1999-05-07 2000-07-13 Xiamen Hongfa Electroacoustic Elektromagnetisches Relais

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Publication number Publication date
DE50307420D1 (de) 2007-07-19
EP1469500A1 (fr) 2004-10-20

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