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WO2006037765A1 - Aimant d'adhérence - Google Patents

Aimant d'adhérence Download PDF

Info

Publication number
WO2006037765A1
WO2006037765A1 PCT/EP2005/054955 EP2005054955W WO2006037765A1 WO 2006037765 A1 WO2006037765 A1 WO 2006037765A1 EP 2005054955 W EP2005054955 W EP 2005054955W WO 2006037765 A1 WO2006037765 A1 WO 2006037765A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole
magnetic
plate
pole faces
permanent 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.)
Ceased
Application number
PCT/EP2005/054955
Other languages
German (de)
English (en)
Inventor
Franz A. Bierbrauer
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.)
Magenta GmbH Systemlieferant fuer Elektromagnetische Baugruppen
Original Assignee
Magenta GmbH Systemlieferant fuer Elektromagnetische Baugruppen
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 Magenta GmbH Systemlieferant fuer Elektromagnetische Baugruppen filed Critical Magenta GmbH Systemlieferant fuer Elektromagnetische Baugruppen
Publication of WO2006037765A1 publication Critical patent/WO2006037765A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures
    • H01F7/206—Electromagnets for lifting, handling or transporting of magnetic pieces or material
    • 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
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
    • 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
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet

Definitions

  • the invention relates to the structural design and the
  • Magnetic magnets of the type described in the introduction have an axially magnetized permanent magnet arranged axially between a ferromagnetic pole plate and a ferromagnetic pole core, a magnet coil concentric with the pole core, axially penetrated by the pole core, and a permanent magnet and a pole plate and ferromagnetic concentric to the solenoid coil whose one end face of the pole plate is radially spaced and in the same plane as the free end face of the pole plate, and the other end over a good magnetic good connection of ferromagnetic material at the end facing away from the permanent magnet Solenoid connects to the pole plate remote end of the pole core.
  • the armature plate consisting of ferromagnetic material should be able to abut against the pole plate and the pole plate-side end face of the housing simultaneously in the case of an electrically de-energized magnet coil, so that the armature plate is retained with a high magnetic adhesive force.
  • a magnetic field directed counter to the magnetic field of the permanent magnet can be generated so that the magnetic adhesive force acting on the anode plate is greatly reduced and the armature plate can already be detached from the adhesive magnet with small external forces.
  • This object can be achieved according to a variant of the invention by a Stanfords ⁇ process in which the armature plate is placed on the first relative to each other perpendicular to the radial plane movable pole faces, the pole faces due to the magnetic adhesive forces assume a position relative to each other, in the air gaps between the pole faces and the anchor plate at least sufficiently ver ⁇ dwindle, and in which case the pole faces are then fixed relative to each other while still resting anchor plate.
  • the pole faces are arranged relative to each other perpendicular to the radial plane permanently movable, that the pole faces can cling to the applied anchor plate each free of air gaps or with sufficient minimization remaining air gaps.
  • the armature plate has two magnetically conductive connected, relative to each other perpendicular to the radial plane movable plate parts, such that each of the plate parts Kunststoff ⁇ gap-free or under sufficient minimization of remaining air gaps can cling.
  • the invention is based on the general idea to allow an at least vor ⁇ temporary mobility of the pole faces or the anchor plate parts relative to each other under the action of the magnetic adhesive forces an adaptation to the respective mating surfaces and thus an air gap-free Anschmiegung between the magnetically adhered surfaces enable. In this way, a material-removing machining of the pole faces is unnecessary. At the same time, a reduction in the corrosion resistance of these surfaces, which accompanies such machining, is avoided.
  • the single FIGURE shows an axial section of an adhesion magnet 10 according to the invention, which is formed substantially rotationally symmetrical with respect to an axis A.
  • housing 1 Within a tubular formed with a circular cross-section housing 1 is made of an electrically insulating material, for. As plastic, existing bobbin 2 an electrically energizable coil 3 is arranged.
  • the inner part of the winding body 2, which is arranged inside the housing 1, is connected in one piece to an outer part of the winding body 2 via radial extensions which pass through open windows in the housing 1 towards the adjacent front end of the housing 1.
  • This outer part can be designed as a mounting flange or the like.
  • the winding body 2 has an axial bore which is penetrated by a pole core 4 made of ferromagnetic material.
  • a pole core 4 made of ferromagnetic material.
  • At its lower end in the drawing of the pole core 4 has an integrally formed annular disc 5, which rests with its outer circumference flat on the inside of the lower end of the housing 1, but so that the housing 1 and pole core 4 at least initially remain axially movable relative to each other.
  • a corresponding axial mobility is also given for the winding body 2 in the housing 1. The purpose of this mobility is explained below.
  • Winding body 2 the pole core 4 is stepped in a tapered extension 6 continues.
  • This extension 6 serves to arrange an annular disk-shaped permanent magnet 7, which is magnetized in the axial direction.
  • a ferromagnetic pole disc 8 is fixedly arranged on the extension.
  • This pole disk 8 like the permanent magnet 7, is enclosed on its outer circumference in the illustrated example by a cylindrical extension of the winding body 2. It is important that between the outer peripheries of the permanent magnet 7 and the pole disc 8 and the inside of the ferromagnetic housing 1 remains an annular clearance space, which may optionally, as shown, of a material, in particular plastic, filled, which is in the magnetic field how air behaves.
  • the pole disk 8 has an annular shape, so that an annular web with a flat, planar end face is formed on the end face of the pole disk 8 remote from the permanent magnet 7.
  • the permanent magnet 7 is magnetically conductively connected to the ferromagnetic pole 1 on its one end face magnetically conductive with the ferromagnetic pole disc 8 and on its other end side also magnetically conductive with the pole core 4 and the molded thereon disc 5, at least at not electrically energized coil 3 between the aforementioned web of the pole disk 8 and the adjacent peripheral edge of the housing 1, a strong magnetic field, which is suitable to magnetically attract a ferromagnetic armature disk 9 or magnetically firmly adhering to fix.
  • the magnetic adhesive force is particularly great when the armature disk 9 on the
  • housing 1 and pole disc 8 optimally rest on the armature disk 9, according to a first embodiment of the invention, the housing 1 can now be fixed relative to the pole core 4.
  • the housing 1 can be pressed with the disc 5 of the pole core 4 with slight deformation.
  • these parts can also be welded together, e.g. by means of a laser.
  • the magnetic holding force holding the armature disk 9 can be greatly reduced or made to disappear, so that the armature disk 9 can be easily removed.
  • this magnetic bypass causes the coil 3 to generate a sufficiently large magnetic opposing field to the field of the permanent magnet 7, even with strongly fluctuating electric current strength of the coil 3, and the armature disk 9 can thus be easily removed from the housing 1 and the pole disc 8 can decrease.
  • the effect is exploited that even at relatively low electric currents within the extension 6, a magnetic saturation of the material of the extension 6 occurs.
  • pole core 4 remain with the pole plate 8 in the axial direction at least limited mobility relative to the housing 1.
  • pole disk 8 and housing 1 can always align each other so that the armature disk 9 free of air gap to the pole disk. 8 and can cling to the housing 1 simultaneously.
  • the invention is not limited to magnets with a permanent magnet in
  • the disc 5 is arranged directly on the side remote from the pole disk 8 side of the permanent magnet 7. Moreover, no ferromagnetic connection between the pole disk 8 and disk 5 is then provided via an extension 6 axially passing through the permanent magnet 7 or the like.
  • the permanent magnet 7 is missing, and the pole disk 8 can be arranged directly on the facing front side of the winding body 2 and can be magnetically connected to the pole core 4 in a well-conducting manner.
  • the disc 5 can be permanently fixed to the housing 1, when the armature plate free of air gap rests on the pole plate 8 and the facing end face of the housing 1 magnetically adhesive.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Electromagnets (AREA)

Abstract

Aimant d'adhérence (10) qui possède une face polaire radiale interne et une face polaire radiale externe (8, 1), une plaque d'induit (9) devant pouvoir venir reposer simultanément sans entrefer sur les deux faces polaires. A cet effet, les faces polaires sont placées l'une par rapport à l'autre avec une mobilité relative. Le cas échéant, les faces polaires peuvent être fixées l'une à l'autre à demeure lorsque la plaque d'induit repose contre elles sans entrefer. Selon une autre variante de la présente invention, il est possible d'envisager une plaque d'induit possédant des parties mobiles les unes par rapport aux autres.
PCT/EP2005/054955 2004-10-04 2005-09-30 Aimant d'adhérence Ceased WO2006037765A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004048639.5 2004-10-04
DE200410048639 DE102004048639A1 (de) 2004-10-04 2004-10-04 Haftmagnet

Publications (1)

Publication Number Publication Date
WO2006037765A1 true WO2006037765A1 (fr) 2006-04-13

Family

ID=35285574

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/054955 Ceased WO2006037765A1 (fr) 2004-10-04 2005-09-30 Aimant d'adhérence

Country Status (2)

Country Link
DE (1) DE102004048639A1 (fr)
WO (1) WO2006037765A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011052173B3 (de) * 2011-07-27 2012-09-27 Benteler Automobiltechnik Gmbh Elektromagnetischer Aktuator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190739A (en) * 1921-06-28 1922-12-28 John Neale Improvements in and relating to electro-magnets
GB1272488A (en) * 1969-08-12 1972-04-26 Geoffrey Richard Polgreen Improvements in and relating to magnets for holding and/or lifting loads
FR2216657A1 (fr) * 1973-02-02 1974-08-30 Noual Emile
US6489871B1 (en) * 1999-12-11 2002-12-03 Simon C. Barton Magnetic workholding device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190739A (en) * 1921-06-28 1922-12-28 John Neale Improvements in and relating to electro-magnets
GB1272488A (en) * 1969-08-12 1972-04-26 Geoffrey Richard Polgreen Improvements in and relating to magnets for holding and/or lifting loads
FR2216657A1 (fr) * 1973-02-02 1974-08-30 Noual Emile
US6489871B1 (en) * 1999-12-11 2002-12-03 Simon C. Barton Magnetic workholding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011052173B3 (de) * 2011-07-27 2012-09-27 Benteler Automobiltechnik Gmbh Elektromagnetischer Aktuator

Also Published As

Publication number Publication date
DE102004048639A1 (de) 2006-04-06

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