EP0160121A1 - 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
EP0160121A1
EP0160121A1 EP84112847A EP84112847A EP0160121A1 EP 0160121 A1 EP0160121 A1 EP 0160121A1 EP 84112847 A EP84112847 A EP 84112847A EP 84112847 A EP84112847 A EP 84112847A EP 0160121 A1 EP0160121 A1 EP 0160121A1
Authority
EP
European Patent Office
Prior art keywords
core
armature
electromagnet
electromagnet according
inclined surface
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
EP84112847A
Other languages
German (de)
English (en)
Other versions
EP0160121B1 (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 AT84112847T priority Critical patent/ATE49490T1/de
Priority to DE8484112847T priority patent/DE3481028D1/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, which consist of sheet metal lamellae and are connected to one another by rivets to form a package.
  • Electromagnets of the aforementioned type are required in large numbers in practice, for a wide variety of switching devices. Due to their design, size, power etc., these different switching devices also require different electromagnets. In many cases, this cannot be avoided or not standardized.
  • electromagnets for electrical switchgear are associated with a high outlay, in particular, because special cutting tools or punching tools are required for the armature on the one hand and the cores on the other hand. In the case of different sizes or designs of electromagnets, a large stock of tools must therefore be kept.
  • the rivets with which the anchors or cores, which consist of sheet metal lamellae, are connected to one another have been set completely differently for the anchors and the core, so that there are correspondingly different riveting stations for machine and core needed.
  • the invention has for its object to provide an electromagnet, the basic structure of which allows a significant simplification of manufacture, especially an efficient automatic manufacture with little machine effort.
  • the object is achieved according to the invention in that the armature and core are composed of sheet metal lamellae of completely the same shape. In this way, only two cutting tools or punching tools are required instead of the previously conventional four cutting tools or punching tools and the associated machines.
  • the position of the rivet holes and rivets is selected so that it is the same for all armatures and cores of AC and DC magnets.
  • Figures 1 to 3 illustrate an exemplary embodiment of an electromagnet for alternating current, in which the core 1 and the armature 14 are completely identical. This can be seen above all from FIG. 2.
  • the core and accordingly the armature 14 have three legs 2, 3 and 4.
  • the core and anchor consist of a package of sheet metal fins 15 lying close to one another. The package thickness can vary, but the same cutting tools and rivets can always be used tools as explained at the beginning can be used.
  • the sheet-metal fins 15 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 armature and core are chosen at the same point.
  • Grooves 10 and 11, in which a short-circuit ring 12 can be arranged, are also stamped on leg 2.
  • Fig. 2 illustrates just by the position of the short-circuit rings that core 1 and armature 14 are pivoted to each other with the same design.
  • a recess 13 is used in the core for attachment to the housing of the electrical switching device or another corresponding fixed component, while the recess in the armature is used for attachment to a movable component of the switching device.
  • an air gap 16 remains between the two middle legs 3 of core 1 and armature 14.
  • FIGS. 4 and 5 illustrate a further exemplary embodiment of a core or anchor, which essentially corresponds to the exemplary embodiment according to FIGS. 1 to 3, so that the same reference numerals have also been used for the same parts.
  • three legs 2, 3 and 4 are provided.
  • the two outer legs 2 and 4 each have an inward widening 17, 18, in the end faces of grooves 19 and 20 are punched for receiving short-circuit rings.
  • a lock 21 running perpendicular to the image plane according to FIG. 4 is stamped in this exemplary embodiment Includes a mounting pin or the like.
  • FIGS. 6 to 8 illustrate another embodiment of an electromagnet, again with a core 28 or armature of completely identical design.
  • an inclined surface 22 is provided such that a narrow end surface 23 remains.
  • an inclined surface 24 and a shoulder 25 are also provided.
  • the inclined surfaces 22 and 24 as well as the end surface 21 and the shoulder 25 are designed and dimensioned such that they match when the armature and the core lie opposite one another. It goes without saying, as also shown in FIG. 8, that one of the two parts is rotated relative to the other once around the horizontal and once around the vertical axis in each case by 180 °.
  • the middle leg 3 also has an inclined surface 26 which is punched out so that an air gap 27 remains between the two inclined surfaces 26 of the armature and core (FIG. 8).
  • Fig. 9 is to illustrate that the position of the rivet holes and rivets 5, 6, 7, 8 and 9 is chosen so that it is the same for all armatures and cores of both AC and DC magnets.
  • an AC core and a DC core are, as it were, drawn on top of one another in FIG. 9, namely the change 4 and 5.
  • the direct current core with its design changes is shown in dash-dot lines and essentially corresponds to the exemplary embodiment according to FIG. 6. Since, according to the above explanations, the core and armature are each designed identically, the rivet holes or rivets have the same position for all cores and anchors, so that only one riveting tool or riveting machine is required.
  • Figures 10 to 12 finally illustrate yet another embodiment of a DC core 29 or armature, which essentially corresponds to that of Figures 6 to 8, but here the three legs 30, 31 and 32 are executed much longer if a large spool is needed.
  • the inclined surfaces 33 and 37 as well as the end surface 34 and the shoulder 36 are designed as described for FIG. 6. The same also applies to the further inclined surface 35 of the middle leg 31.
  • An air gap 38 is again formed between the two inclined surfaces 35 of the core and armature, as shown in FIG. 11.
  • the overall contours of the sheet metal fins 15 explained above are advantageously punched out in such a way that mechanical reworking, in particular also on the opposing surfaces of the core and armature, is dispensed with.
  • the middle leg 3 has two triangular or as shown 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, that is 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 projection 45 and trapezoidal design of the projections 45 and 46 are provided on these flat end faces 43 and 44.
  • This overall design of the middle leg 3 with the above-described surfaces is such that a small, uniform air gap remains when the core and anchor are joined 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, ie 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 at an angle of preferably 20 ° to the direction of movement of the armature run. As shown, shoulders 49 and 64 are provided on the side of the projections 47 and 51.
  • FIG. 14 shows an exemplary embodiment of a direct current electromagnet with a completely identical armature and core, the middle legs 3 being designed essentially like the middle leg according to FIG. 13, so that the same effects and advantages as described above occur here .
  • 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 42 is drawn enlarged in FIG. 14 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 on the front end of one outer leg 2 and a trapezoidal adapted projection 55 is provided on 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 inclined surfaces described on the outer legs 2 and 4 are symmetrical, large effective magnetic surfaces can also be used in the area the lateral leg no force component arise transversely to the direction of movement of the armature, so that the central guidance of the armature is further improved and the friction is reduced.
  • the exemplary embodiments explained above relate to anchors and cores with three legs each.
  • the invention can also be applied analogously to electromagnets, the armatures and cores of which each have two legs.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
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
AT84112847T ATE49490T1 (de) 1984-10-25 1984-10-25 Elektromagnet fuer elektrische schaltgeraete, insbesondere schuetze.
DE8484112847T DE3481028D1 (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 true EP0160121A1 (fr) 1985-11-06
EP0160121B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251321B1 (fr) * 1986-07-04 1993-03-10 Hitachi, Ltd. Noyau de fer pour électro-aimant et procédé pour fabriquer celui-ci

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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
WO2013170099A1 (fr) 2012-05-09 2013-11-14 Yknots Industries Llc Etalonnage de systèmes à retour haptique pour dispositifs d'entrée
WO2013169301A1 (fr) 2012-05-09 2013-11-14 Yknots Industries Llc Rétroaction variable en fonction d'une entrée traînée
US20150109223A1 (en) 2012-06-12 2015-04-23 Apple Inc. Haptic electromagnetic actuator
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1614342A1 (de) * 1966-05-24 1970-05-27 Pirelli Mehrpoliges elektromagnetisches Relais mit umkehrbaren Kontakten
DE2844361A1 (de) * 1977-10-18 1979-04-19 Telemecanique Electrique Elektromagnet fuer mit gleichstrom gespeiste kontaktgeber
EP0005734A1 (fr) * 1978-05-02 1979-12-12 Asea Ab Appareil de commutation actionné électromagnétiquement
EP0081604A1 (fr) * 1981-12-14 1983-06-22 Sprecher & Schuh AG Couple de noyaux en fer, et corps de bobine pour protection en courant alternatif

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Publication number Priority date Publication date Assignee Title
US984748A (en) * 1910-11-02 1911-02-21 Union Switch & Signal Co Electromagnetic apparatus.
GB392449A (en) * 1931-11-02 1933-05-18 Schiele & Bruchsaler Ind Improvements in alternating current electro-magnets especially for remote control circuit-breakers
US2378162A (en) * 1941-11-25 1945-06-12 Ward Leonard Electric Co Electric switch
FR1557435A (fr) * 1967-03-29 1969-02-14
DE1810250B2 (de) * 1968-04-20 1972-12-07 VEB Kombinat Schaltelektronik, x8717Oppach Elektromagnet mit zwei e-foermigen kernteilen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1614342A1 (de) * 1966-05-24 1970-05-27 Pirelli Mehrpoliges elektromagnetisches Relais mit umkehrbaren Kontakten
DE2844361A1 (de) * 1977-10-18 1979-04-19 Telemecanique Electrique Elektromagnet fuer mit gleichstrom gespeiste kontaktgeber
EP0005734A1 (fr) * 1978-05-02 1979-12-12 Asea Ab Appareil de commutation actionné électromagnétiquement
EP0081604A1 (fr) * 1981-12-14 1983-06-22 Sprecher & Schuh AG Couple de noyaux en fer, et corps de bobine pour protection en courant alternatif

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251321B1 (fr) * 1986-07-04 1993-03-10 Hitachi, Ltd. Noyau de fer pour électro-aimant et procédé pour fabriquer celui-ci

Also Published As

Publication number Publication date
US4577174A (en) 1986-03-18
EP0160121B1 (fr) 1990-01-10

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