EP1351262A2 - Electroaimant à courant continu - Google Patents

Electroaimant à courant continu Download PDF

Info

Publication number
EP1351262A2
EP1351262A2 EP03003903A EP03003903A EP1351262A2 EP 1351262 A2 EP1351262 A2 EP 1351262A2 EP 03003903 A EP03003903 A EP 03003903A EP 03003903 A EP03003903 A EP 03003903A EP 1351262 A2 EP1351262 A2 EP 1351262A2
Authority
EP
European Patent Office
Prior art keywords
armature
arrangement according
air gap
electromagnet arrangement
magnetic
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
EP03003903A
Other languages
German (de)
English (en)
Other versions
EP1351262A3 (fr
EP1351262B1 (fr
Inventor
Volker Lang
Rudolf Scholz
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.)
Eaton Industries GmbH
Original Assignee
Moeller 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 Moeller GmbH filed Critical Moeller GmbH
Publication of EP1351262A2 publication Critical patent/EP1351262A2/fr
Publication of EP1351262A3 publication Critical patent/EP1351262A3/fr
Application granted granted Critical
Publication of EP1351262B1 publication Critical patent/EP1351262B1/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
    • H01H50/20—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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/163—Details concerning air-gaps, e.g. anti-remanence, damping, anti-corrosion
    • 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
    • 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding

Definitions

  • the invention relates to a direct current electromagnet made of laminated magnetic parts for use in an electrical switching device, especially in a Contactor with a drive coil.
  • DC electromagnets which are used especially in contactors come in different forms. If such electromagnets two pairs of pole faces include, for example in a U-shaped magnetic yoke with a rod-shaped armature closing the magnetic yoke or with E-shaped magnetic parts, the relative adjustment of the position of the pole face pairs is necessary. Furthermore, there are at least two working air gaps in such electromagnets before, whereby the size of the power loss is also determined.
  • the invention has for its object to provide a DC electromagnet with comparatively similar power loss and functionality, with reduced production costs, or with the smallest possible number Magnetic parts and in which the number of pole face pairs is reduced.
  • the essence of the invention is that a construction with E-shaped magnetic bodies is not used. It is opposite the writings of the State of the art only a single working air gap is available.
  • the invention is that the fixed magnetic yoke ring or Is C-shaped and has a central web and two angled from the central web protruding magnetic yoke legs. Furthermore is between the free end of the movable prismatic anchor and the center of the center bar perpendicular a single working air gap is formed to the longitudinal axis of the armature; the both free leg ends of the magnetic yoke are brought close to the anchor, where a narrow passage gap is formed for the anchor.
  • the armature is guided by guide devices during its displacement stroke.
  • the free end of the armature is aimed at the central web of the magnetic yoke and the surfaces of the working air gap are oblique to the axis of the armature educated.
  • the one formed between the free ends of the magnet yoke legs and the armature narrow passage gap only represents a parasitic air gap, the magnetic resistance does not change during displacement stroke movements.
  • a symmetrical formation of the working air gap is preferred, in which the surfaces are wedge-shaped.
  • the wedge shape of the working air gap is at the free end of the armature is designed such that the wedge tip in the plane of symmetry of the center bar and the wedge is aimed at the center bar.
  • the wedge shape of the working air gap on the central web is a wedge-shaped recess educated.
  • the working air gap is at least with one stop provided non-magnetic material, the material when closed Magnetic circuit forms the remanent air gap.
  • yoke profile is understood to mean the interior, which is caused by the interior surfaces the side leg and the middle web is formed.
  • the yoke profile facing surface of the central web can preferably be without elevations or projections into the yoke profile.
  • an extension web is formed on the central web of the magnetic yoke, which extends the wedge-shaped recess as correspondence to the one formed at the end of the anchor Working air gap carries.
  • the advantage of the magnet arrangement described is that compared to arrangements with comparable drive volume and comparable power loss higher contact pressure forces can be achieved. It is also advantageous that the structure is created from stamped-packet-sheet metal that is welded or riveted could be. The assembly of the drive can be made easy because the symmetrical structure of the magnet arrangement only a few coupling elements must be used. Overall, the profitability of the Improve manufacturing.
  • the formation of the working air gap is based on this demand (first form of training) in such a way that the The entire inner surface of the transverse leg facing the magnet armature is a single one Level forms that no physical formations (elevation) into the Has yoke profile, which hinders the insertion of the drive coil would.
  • Embodiments are proposed for the subject matter according to the invention, which differ in the length of the anchor used or in the position of the Distinguish the working air gap with respect to the central web of the magnetic yoke.
  • the magnetic parts (yoke 10 and armature 60) of the magnet arrangement consist of Stamped sheet metal packages and have a rectangular cross-section.
  • the packages are without Cover plates riveted (rivet 80), which results in mechanical cohesion results.
  • a very economical production is thus achieved, that in production from turned parts (especially the one of the armature) is not possible.
  • the fixed, ring or C-shaped Magnetic yoke 10 is arranged, which comprises two side legs 11, which are perpendicular protrude from the central web 12 and are thus aligned parallel to one another.
  • the Ends 14 of the side legs 11 are angled inward toward the armature 60.
  • the ends of the legs are brought close to the magnetic armature, where they meet form narrow passage gap 23 for the anchor.
  • In the passage gap is between
  • the vastness of the Air gap is a few tenths of a mm. Compliance with the air gap width during the armature movement should have precise guide elements or - preferably - can be guaranteed by a platelet covering made of non-magnetic material.
  • the material layer (made of foil or platelets) is placed on the air gap surfaces in the passage gap on the magnetic parts 14, 14 ', 60. With friction reducing Material support, the friction in the passage gap 23 can be minimized.
  • Guide means indicated by reference numeral 40 becomes the magnet armature headed during the displacement stroke.
  • the magnet armature 60 is prismatic or rod-shaped. Its free end 64 is directed towards the center of the central web 12 of the magnetic yoke.
  • the head side 66 of the armature 60 carries a groove 80 for the introduction of not shown Coupling elements for the drive mechanism.
  • a restoring force can be generated by at least one spring.
  • the magnet armature 60 is driven by a drive coil (not shown) with a coil body and excitation winding.
  • the magnet assembly is powered by the drive coil completes the space (yoke or inner profile 300) between the central web 12, almost completely occupies side legs 11 and leg ends 14, and in the interior of the anchor 60 in the direction of the central web 12 of the Magnet yoke is moved.
  • the magnetic armature has a corresponding stroke in the Working air gap 22.
  • the shape of the working air gap 22 is wedge-shaped or triangular designed.
  • the magnet arrangement is symmetrical to a vertical plane of symmetry of the C-shaped magnetic yoke.
  • the yoke profile 300 spanned by the magnetic yoke 10 is square or rectangular educated.
  • the cross section formed by the yoke profile allows in the embodiment 1 the unimpeded insertion of the not shown Drive coil including bobbin perpendicular to the plane of symmetry of the Yoke.
  • the two embodiments according to FIG. 1 and FIG. 2 differ in the Length of the anchor and the position of the working air gap 22 and also in size of the winding space for the drive coil.
  • the yoke profile has a larger free space, since the central web 12 with a smallest possible cross section is executable.
  • the leg ends are 14 integrally formed with the magnetic yoke 10.
  • the entire magnetic yoke 10 is made from uniform stamped sheets, which are held together with rivets 80.
  • the leg ends 14 ' are made of magnetically conductive Pieces (flux guide pieces) formed on the magnetic yoke 10 and with not shown Connections attached to the side legs 11.
  • the multi-part training is necessary because of it the assembly of the drive coil in the magnetic yoke in time before Assembly of the magnetic yoke is made possible.
  • Numbers 77 indicate areas which are made of stop plates non-magnetic material (e.g. plastic or metal foil) should.
  • Two stop plates can be symmetrical on the anchor or on the magnetic yoke or be arranged on both. A defined one is created with the stop plates Air gap thickness formed, which excludes sticking together and by the anti-retentive function of the air gap is fulfilled.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Impact Printers (AREA)
  • Soft Magnetic Materials (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
EP03003903A 2002-04-05 2003-02-21 Electroaimant à courant continu Expired - Lifetime EP1351262B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10215018 2002-04-05
DE10215018A DE10215018A1 (de) 2002-04-05 2002-04-05 Gleichstrom-Elektromagnet

Publications (3)

Publication Number Publication Date
EP1351262A2 true EP1351262A2 (fr) 2003-10-08
EP1351262A3 EP1351262A3 (fr) 2004-12-08
EP1351262B1 EP1351262B1 (fr) 2008-08-20

Family

ID=27816154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03003903A Expired - Lifetime EP1351262B1 (fr) 2002-04-05 2003-02-21 Electroaimant à courant continu

Country Status (5)

Country Link
US (1) US6731191B2 (fr)
EP (1) EP1351262B1 (fr)
AT (1) ATE405939T1 (fr)
DE (2) DE10215018A1 (fr)
ES (1) ES2312673T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10359640B3 (de) * 2003-12-18 2004-10-14 Moeller Gmbh Elektromagnetanordnung
DE102004002528A1 (de) * 2004-01-12 2005-08-04 Siemens Ag Elektromagnetischer Linearantrieb
JP4285354B2 (ja) * 2004-07-26 2009-06-24 株式会社デンソー リニアソレノイドおよび電磁弁
EP1892739A1 (fr) * 2006-08-25 2008-02-27 Siemens Aktiengesellschaft Unité d'entraînement électromagnétique et appareil de commutation électromécanique
US8451080B2 (en) * 2011-02-16 2013-05-28 Toyota Motor Engineering & Manufacturing North America, Inc. Magnetic field focusing for actuator applications
US8736128B2 (en) 2011-08-10 2014-05-27 Toyota Motor Engineering & Manufacturing North America, Inc. Three dimensional magnetic field manipulation in electromagnetic devices
US8570128B1 (en) 2012-06-08 2013-10-29 Toyota Motor Engineering & Manufacturing North America, Inc. Magnetic field manipulation devices and actuators incorporating the same
US9231309B2 (en) 2012-07-27 2016-01-05 Toyota Motor Engineering & Manufacturing North America, Inc. Metamaterial magnetic field guide
WO2017023235A1 (fr) * 2015-07-31 2017-02-09 Compagnie Generale Des Etablissements Michelin Dispositif et procédé pour l'inspection de matériau polymère à renfort ferreux
CN110911233B (zh) * 2018-09-17 2022-08-30 伊顿电气有限公司 一种直流磁系统及电力设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB532905A (en) * 1939-09-23 1941-02-03 Igranic Electric Co Ltd Improvements in or relating to electromagnets
CH366333A (fr) * 1957-08-16 1962-12-31 Renault Electro-aimant
DE2530536A1 (de) * 1975-07-09 1977-01-13 Licentia Gmbh Elektromagnet
US4700165A (en) * 1984-06-25 1987-10-13 La Telemecanique Electrique DC electromagnet equipped with a voltage surge damping device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406885A1 (fr) * 1977-10-18 1979-05-18 Telemecanique Electrique Electro-aimant pour contacteur alimente en courant continu
FR2560429B1 (fr) 1984-02-28 1987-06-19 Telemecanique Electrique Electro-aimant silencieux et contacteur utilisant un tel electro-aimant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB532905A (en) * 1939-09-23 1941-02-03 Igranic Electric Co Ltd Improvements in or relating to electromagnets
CH366333A (fr) * 1957-08-16 1962-12-31 Renault Electro-aimant
DE2530536A1 (de) * 1975-07-09 1977-01-13 Licentia Gmbh Elektromagnet
US4700165A (en) * 1984-06-25 1987-10-13 La Telemecanique Electrique DC electromagnet equipped with a voltage surge damping device

Also Published As

Publication number Publication date
ATE405939T1 (de) 2008-09-15
ES2312673T3 (es) 2009-03-01
DE50310337D1 (de) 2008-10-02
US20030189474A1 (en) 2003-10-09
EP1351262A3 (fr) 2004-12-08
EP1351262B1 (fr) 2008-08-20
DE10215018A1 (de) 2003-10-23
US6731191B2 (en) 2004-05-04

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