EP0160121B1 - Electro-aimant pour appareils de commutation électrique, notamment pour contacteurs - Google Patents

Electro-aimant pour appareils de commutation électrique, notamment pour contacteurs Download PDF

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Publication number
EP0160121B1
EP0160121B1 EP84112847A EP84112847A EP0160121B1 EP 0160121 B1 EP0160121 B1 EP 0160121B1 EP 84112847 A EP84112847 A EP 84112847A EP 84112847 A EP84112847 A EP 84112847A EP 0160121 B1 EP0160121 B1 EP 0160121B1
Authority
EP
European Patent Office
Prior art keywords
legs
leg
armature
respect
electromagnet
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
EP84112847A
Other languages
German (de)
English (en)
Other versions
EP0160121A1 (fr
Inventor
Helmut Lemmer
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.)
Square D Co Deutschland GmbH
Original Assignee
Square D Co Deutschland GmbH
Square D Starkstrom GmbH
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 Square D Co Deutschland GmbH, Square D Starkstrom GmbH filed Critical Square D Co Deutschland GmbH
Priority to DE8484112847T priority Critical patent/DE3481028D1/de
Priority to AT84112847T priority patent/ATE49490T1/de
Priority to ES1985295895U priority patent/ES295895Y/es
Priority to AU39521/85A priority patent/AU567652B2/en
Priority to DK129985A priority patent/DK129985A/da
Priority to CA000477585A priority patent/CA1234854A/fr
Priority to BR8501405A priority patent/BR8501405A/pt
Priority to NO851303A priority patent/NO851303L/no
Priority to MX20481885A priority patent/MX157603A/es
Publication of EP0160121A1 publication Critical patent/EP0160121A1/fr
Application granted granted Critical
Publication of EP0160121B1 publication Critical patent/EP0160121B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets
    • 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
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • 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
    • 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
    • H01H50/22—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 wherein the magnetic circuit is substantially closed
    • H01H2050/225—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 wherein the magnetic circuit is substantially closed with yoke and armature formed by identical stacked laminates, e.g. punched in one and the same tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/46—Short-circuited conducting sleeves, bands, or discs

Definitions

  • the invention relates to an electromagnet for electrical switching devices, in particular contactors, with an armature and a core, each having three E-shaped legs and which consist of sheet metal lamellae of completely the same shape and are connected by rivets to form a package.
  • An electromagnetically operated switching device of this type is known from EP-A-0 005 734.
  • This switching device has a magnetic iron core, which consists of two identical E-shaped magnetic parts, namely a magnetic core carrying the winding and an armature.
  • the advantages are a simple manufacture of the sheet metal lamellae and a machine riveted connection of the sheet metal lamellae to packages.
  • a multipole electromagnetic relay is known from DE-A-1 614 342, the core and armature likewise being of the same design.
  • an electromagnet is known from DE-A-2 844 361, in which the three legs of the core and armature have inclined surfaces.
  • the design is such that the core and armature have completely different shapes, that is, they cannot be composed of sheet metal plates of the same design. This makes riveting sheet metal lamellae very difficult, in any case it cannot be done in the same way for core and armature.
  • the inclined surfaces are otherwise designed so that there are no defined stop surfaces, so that in the end position of the anchor a sideways tilt or a different sliding of the inclined surfaces on the outer legs can occur, especially since an air gap remains between the two middle legs and no centering from here can be done.
  • the invention is based on the object of creating an electromagnet which, on the one hand, offers an enlargement of the effective magnetic surfaces, in which, furthermore, the magnetic force is as accurate as possible in the central axis, i.e. runs in the direction of movement of the armature, the armature receives good central guidance during its stroke and the friction of the moving parts is reduced.
  • each middle leg of each E-shaped magnetic circuit part lying side by side has a triangular or trapezoidal projection and a recess with the same shape as the projection, so that this end face has several partial surfaces each inclined to the longitudinal axis of the leg, and that most of the end faces of the two outer legs of the armature and core are inclined to the longitudinal axis of the leg, but in the edge region there are narrow surface sections running perpendicular to the leg axis.
  • Fig. 1 shows an embodiment of a core 1 or an armature for a DC electromagnet with three legs 2, 3 and 4.
  • the core and armature consist of a package of sheet metal lamellae lying close together.
  • the package thickness can vary, but the same cutting tools and riveting tools can always be used.
  • the sheet metal lamellae are connected to one another by rivets 5, 6, 7, 8 and 9, it being essential that the position of the rivet holes and accordingly also the rivets for the anchor and core are chosen at the same point.
  • a hole 21 is punched perpendicular to the image plane and is used to hold a fastening pin or the like.
  • the central leg 3 has two triangular or, as drawn, trapezoidal projections 45 and 46, the length of which is dimensioned such that the outer inclined surfaces 40 and 41 located on the projections together have the same size as the central inclined surface 39.
  • the inclined surfaces 39 , 40 and 41 preferably run at an angle of 20 ° to the direction of movement of the armature, ie at an acute angle. In this way, a very large effective magnetic surface is obtained in relation to the size of the core or the armature, which is particularly advantageous in the case of spatially small direct current contactors.
  • a small shoulder 42 is provided to the side of the protrusion 45, and if the protrusions 45 and 46 are trapezoidal, flat end faces 43 and 44 are present on these.
  • This overall design of the middle leg 3 with the above-described surfaces is such that when the core and armature are joined and the projection 45 of the core 1 engages in the recess 10 of the same shape of the associated armature, a small, uniform air gap remains between the surfaces in question.
  • the construction of the middle leg 3 ensures that the tension or the magnetic force of the electromagnet runs exactly in the central axis, that is to say in the direction of movement of the armature. This gives the anchor good central guidance during its stroke, which reduces the friction of the moving parts, in particular the anchor on the walls or guides, to a very low level.
  • the two outer legs 2 and 4 have trapezoidal projections 47 and 51 with end faces 50 and inclined surfaces 48 and 63, the latter again running at an angle of preferably 20 ° to the direction of movement of the armature. As shown, shoulders 49 and 64 are provided on the side of the projections 47 and 51.
  • Fig. 2 shows another embodiment of a direct current electromagnet with completely same-shaped armature 14 and core 1, wherein the middle leg 3 are formed essentially as the middle leg of FIG. 1, so that here the same effects and advantages as described above occur.
  • the respective projection 58 is here almost triangular and the lateral projection 59 is trapezoidal.
  • a shoulder 60 is formed outside the projection 58 and an end face 61 is formed on the projection 59.
  • the zigzag-shaped air gap 62 is shown enlarged in FIG. 2 for the sake of clarity, and the core and armature are not shown in the end position here, but rather at a certain distance from one another.
  • a trapezoidal recess 52 with symmetrical mutually inclined surfaces 65 and 66 is provided at the front end of one outer leg 2 and a trapezoidal adapted projection 55 is provided at the front end of the other outer leg 4.
  • the inclined surfaces 65 and 66 of the recess and that of the respective projection 55 in turn advantageously run at an acute angle of preferably 20 ° to the direction of movement of the armature. Shoulders 56 and 57 are formed on the side of the projection 55 and small end faces 53 and 54 are formed on the side of the recess 52.
  • the described inclined surfaces on the outer legs 2 and 4 are symmetrical, no force component can arise transversely to the direction of movement of the armature in the case of large effective magnetic surfaces, even in the region of the side legs, so that the central guidance of the armature is further improved and the friction is reduced.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Claims (4)

1. Electro-aimant pour appareils électriques de commutation, en particulier pour contacter, comportant une ancre (14), un noyau (1), qui présentent chacun trois branches assemblées en forme de E (2, 3, 4), et qui se composent de lamelles de tôle totalement coordonnées dans cette forme et reliées respectivement en un paquet par des rivets (5, 6, 7, 8, 9), caractérisé en ce que la face avant de chaque branche centrale (3) de chaque partie de circuit magnétique en forme de E présente côté-à-côté une saillie triangulaire ou trapézoïdale (45) et un évidement (10) de même forme que la saillie, de sorte que cette face frontale présente plusieurs surfaces partielles (39, 40, 41) de tracés respectivement inclinés par rapport à l'axe longitudinal de la branche, et que de plus la partie la plus importante (48, 63) des faces avant des deux branches extérieures (2, 4) de l'ancre et du noyau est de tracé incliné par rapport à l'axe longitudinal de la branche, mais qu'il existe pourtant dans la zone de bord de petites parties de surface (49, 50, 56) de tracé perpendiculaire à l'axe de branche.
2. Electro-aimant selon la revendication 1, ca-' ractérisé en ce que les parties (48, 63) inclinées par rapport à l'axe longitudinal de branche des faces frontales des deux branches extérieures (2, 4) d'une partie de circuit magnétique en forme de E sont respectivement situées dans un plan et que ces deux plans sont parallèles l'un à l'autre (Fig. 1).
3. Electro-aimant selon la revendication 1, caractérisé en ce que les parties des faces frontales des deux branches extérieures (2, 4) qui sont inclinées par rapport à l'axe longitudinal de branche d'une partie de circuit magnétique en forme de E sont constitués par une saillie 55 trapézoïdale dans l'une (4) et par un évidement trapézoïdale de même forme (52) dans l'autre des deux branches extérieures (2, 4) de la partie de circuit magnétique.
4. Electro-aimant selon l'une des revendications 1 à 3, caractérisé en ce que les deux surfaces partielles (39,40,41, 48, 63, 65, 66) de tracé incliné par rapport à l'axe longitudinal de branche, de la face frontale de la branche centrale (3) et des branches extérieures (2, 4) inclut par rapport à ses axes respectivement un angle de 20.
EP84112847A 1984-03-31 1984-10-25 Electro-aimant pour appareils de commutation électrique, notamment pour contacteurs Expired - Lifetime EP0160121B1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE8484112847T DE3481028D1 (de) 1984-10-25 1984-10-25 Elektromagnet fuer elektrische schaltgeraete, insbesondere schuetze.
AT84112847T ATE49490T1 (de) 1984-10-25 1984-10-25 Elektromagnet fuer elektrische schaltgeraete, insbesondere schuetze.
ES1985295895U ES295895Y (es) 1984-03-31 1985-02-20 Electroiman para aparatos de maniobra electrica, particularmente contactores
AU39521/85A AU567652B2 (en) 1984-03-31 1985-03-05 Electromagnet core and armature
DK129985A DK129985A (da) 1984-03-31 1985-03-22 Elektromagnet til elektriske omskiftere eller afbrydere
CA000477585A CA1234854A (fr) 1984-03-31 1985-03-27 Electroaimant pour dispositif de commutation
BR8501405A BR8501405A (pt) 1984-03-31 1985-03-28 Eletroima para chaves eletricas,sobretudo contactores
NO851303A NO851303L (no) 1984-03-31 1985-03-29 Elektromagnet for elektriske koplingsanordninger, saerlig kontaktorer.
MX20481885A MX157603A (es) 1984-03-31 1985-04-01 Mejoras en electroiman para dispositivos interruptores electromagneticos

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84103594 1984-03-31

Publications (2)

Publication Number Publication Date
EP0160121A1 EP0160121A1 (fr) 1985-11-06
EP0160121B1 true EP0160121B1 (fr) 1990-01-10

Family

ID=8191855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112847A Expired - Lifetime EP0160121B1 (fr) 1984-03-31 1984-10-25 Electro-aimant pour appareils de commutation électrique, notamment pour contacteurs

Country Status (2)

Country Link
US (1) US4577174A (fr)
EP (1) EP0160121B1 (fr)

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JPS6313306A (ja) * 1986-07-04 1988-01-20 Hitachi Ltd 電磁石鉄心，及びその製作方法
US4812884A (en) * 1987-06-26 1989-03-14 Ledex Inc. Three-dimensional double air gap high speed solenoid
US5204802A (en) * 1988-11-23 1993-04-20 Datacard Corporation Method and apparatus for driving and controlling an improved solenoid impact printer
DE19712064A1 (de) * 1997-03-24 1998-10-01 Braunewell Markus Elektromagnetischer Antrieb
DE10032506A1 (de) * 2000-07-05 2002-01-17 Kienle & Spiess Stanz & Druck Verfahren zur Herstellung von Massivkernen aus Lamellen
US6853276B2 (en) * 2001-09-20 2005-02-08 Richard G. Smith Electromagnetic formed contact surface
AT8202U1 (de) * 2003-08-28 2006-03-15 Naimer H L Elektromagnetisches schaltelement mit gekrümmten polflächen
US20050076866A1 (en) * 2003-10-14 2005-04-14 Hopper Mark L. Electromechanical valve actuator
DE102004002528A1 (de) * 2004-01-12 2005-08-04 Siemens Ag Elektromagnetischer Linearantrieb
US7619861B2 (en) * 2004-09-29 2009-11-17 Pass & Seymour, Inc. Protective device having a thin construction
GB0603171D0 (en) * 2006-02-17 2006-03-29 Rolls Royce Plc An actuator
KR200451951Y1 (ko) * 2008-12-31 2011-01-25 엘에스산전 주식회사 적층 코어를 사용한 모노스테이블 영구자석형 액추에이터
US20120268225A1 (en) * 2011-04-19 2012-10-25 Honeywell International Inc. Solenoid actuator with surface features on the poles
WO2013169303A1 (fr) 2012-05-09 2013-11-14 Yknots Industries Llc Rétroaction haptique adaptative pour des dispositifs électroniques
WO2013170099A1 (fr) 2012-05-09 2013-11-14 Yknots Industries Llc Etalonnage de systèmes à retour haptique pour dispositifs d'entrée
WO2013188307A2 (fr) 2012-06-12 2013-12-19 Yknots Industries Llc Actionneur électromagnétique haptique
US9886116B2 (en) 2012-07-26 2018-02-06 Apple Inc. Gesture and touch input detection through force sensing
TWI524996B (zh) * 2013-01-25 2016-03-11 財團法人工業技術研究院 可撓性電子裝置
US9304587B2 (en) 2013-02-13 2016-04-05 Apple Inc. Force sensing mouse
US20150242037A1 (en) 2014-01-13 2015-08-27 Apple Inc. Transparent force sensor with strain relief
CN103985602B (zh) * 2014-05-30 2015-10-28 成都海沃斯电气技术有限公司 交流接触器e型铁芯
US10297119B1 (en) 2014-09-02 2019-05-21 Apple Inc. Feedback device in an electronic device
US9939901B2 (en) 2014-09-30 2018-04-10 Apple Inc. Haptic feedback assembly
US9798409B1 (en) 2015-03-04 2017-10-24 Apple Inc. Multi-force input device
WO2017076447A1 (fr) * 2015-11-05 2017-05-11 Abb Schweiz Ag Dispositif à électroaimant

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EP0081604B1 (fr) * 1981-12-14 1986-08-06 Sprecher & Schuh AG Couple de noyaux en fer, et corps de bobine pour protection en courant alternatif

Also Published As

Publication number Publication date
EP0160121A1 (fr) 1985-11-06
US4577174A (en) 1986-03-18

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