EP2197002A1 - Aimant électrique doté d'une plaque d'amortissement - Google Patents

Aimant électrique doté d'une plaque d'amortissement Download PDF

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Publication number
EP2197002A1
EP2197002A1 EP08021708A EP08021708A EP2197002A1 EP 2197002 A1 EP2197002 A1 EP 2197002A1 EP 08021708 A EP08021708 A EP 08021708A EP 08021708 A EP08021708 A EP 08021708A EP 2197002 A1 EP2197002 A1 EP 2197002A1
Authority
EP
European Patent Office
Prior art keywords
armature
pole
pole core
core
face
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
EP08021708A
Other languages
German (de)
English (en)
Other versions
EP2197002B1 (fr
Inventor
Gerhard Schöner
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.)
Kendrion Binder Magnete GmbH
Original Assignee
Kendrion Binder Magnete 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 Kendrion Binder Magnete GmbH filed Critical Kendrion Binder Magnete GmbH
Priority to AT08021708T priority Critical patent/ATE523886T1/de
Priority to ES08021708T priority patent/ES2373346T3/es
Priority to EP08021708A priority patent/EP2197002B1/fr
Priority to PL08021708T priority patent/PL2197002T3/pl
Publication of EP2197002A1 publication Critical patent/EP2197002A1/fr
Application granted granted Critical
Publication of EP2197002B1 publication Critical patent/EP2197002B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/088—Electromagnets; Actuators including electromagnets with armatures provided with means for absorbing shocks
    • 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
    • H01F2007/1661—Electromagnets or actuators with anti-stick disc
    • 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 an electromagnet having a damping disk arranged between a pole core and a displaceable armature.
  • the armature moves at high speed in the direction of the pole core, so that the pole face of the armature impinges on the pole face of the stationary pole core to produce a correspondingly loud noise.
  • a plastic damping disk between the pole faces of the pole core and the armature, preferably fluorocarbon rubber (FKM) or silicone rubber at high operating temperatures.
  • the electromagnet With longer lasting energization of the electromagnet, it may come through the consequent pressure load of the plastic and in particular at an elevated temperature to an adhesive effect between the plastic of the damping disk and the metal surfaces of the pole core or the armature, with the result of a delayed fall of the armature Turning off the exciter coil and the return of the armature by, for example, a return spring. This deceleration occurs especially after switching off and the cooling of the electromagnet at a re-operation.
  • Such arranged in a solenoid damper plate is from the DE 71 42 492 U known, which also serves the To reduce remanence and thus facilitate the release of the armature by, for example, a return spring.
  • the object of the invention is to provide an electromagnet with a arranged between a pole core and a displaceable armature damper disc in which under all operating conditions of the electromagnet, especially after operation at elevated operating temperature no adhesive effects between the damping disk and the pole face of the pole core or the armature comes.
  • this damping disk is provided according to the invention with a bonded coating, preferably based on polytetrafluoroethylene.
  • Such an anti-friction coating has an extremely low adhesion and is therefore excellently suitable as a coating for the damping disk in order to prevent, at least considerably reduce, the adhesive effect described above.
  • PTFE polytetrafluoroethylene
  • Teflon polytetrafluoroethylene
  • either the surface of the damping disk facing the armature can be provided with the bonded coating, or the opposite surface of the damping disk, which faces the pole core.
  • the advantage over a two-sided coating of the damping disk with a bonded coating layer is that the uncoated side of the damping disk can be better connected to the pole core or the armature, since this surface has a higher adhesion.
  • the damping disk according to the invention can be ideally adapted to most different configurations of the pole faces of the pole core and the armature. If the armature facing pole surface of the pole core is provided with an inner cone or an outer cone and the pole face of the armature has a thereto adapted outer cone or inner cone, the damping disc can be arranged on the cone bottom of the inner cone of the pole core or the armature. Furthermore, it is possible, in such an embodiment of the pole core and of the armature, to arrange the damping disk on the surface of the outer cone of the armature or of the pole core lying opposite the cone bottom of the inner cone of the pole core or of the armature.
  • the pole face of the pole core facing the armature has a hollow-cylindrical recess and the armature has a pole face adapted thereto, wherein the damping disk is arranged in the hollow-cylindrical recess of the pole face of the pole core.
  • the damping disk can also be arranged on the pole face of the armature in this embodiment of the pole faces.
  • Such a hollow cylindrical recess can also be provided on the pole face of the armature, to which the pole face of the pole core is adapted.
  • the inventive Damping disc can then be mounted either on the pole face of the armature or the pole face of the pole core.
  • the in FIG. 1 illustrated electromagnet 1 has a soft magnetic housing 2, which receives an excitation coil 3, a pole core 4 mounted centrally therein and an armature 5 displaceable against the pole core 4.
  • the armature is mounted on the side remote from the pole core on the front side of the housing 2 by means of a sliding bearing and on the opposite side by means of an axis 7, which is guided in a central bore of the pole core 4. In this axis 7 can be omitted if the armature 5 (not shown) is mounted and guided in a thin-walled guide tube, which is enclosed by the exciter coil 3.
  • the armature 5 When energized, the armature 5 moves in the in the FIG. 1 shown Hubend ein and suggests it with its pole face on the pole face of the pole core 4, wherein a defined distance between these two pole faces by an intermediate arranged damping disk 6 is maintained.
  • the damping disk is made of plastic, at high operating temperatures of the electromagnet 1 in particular of fluorine or silicone rubber, whereby the noise generated when the armature 5 striking the pole core 4 is reduced.
  • the damping disk is provided on one or both sides with a bonded coating, polytetrafluoroethylene (PTFE), known under the trade name Teflon, being used as the basis for this purpose.
  • PTFE polytetrafluoroethylene
  • Teflon is extremely low and is therefore suitable as a bonded coating coating excellent for the damping disk to prevent an adhesive effect, at least significantly reduce.
  • FIG. 1 has the armature 5 opposite surface of the pole core 4 an inner cone, to which the pole face of the armature 5 is adapted by means of an outer cone.
  • the damping disk 6 can with its one surface on the annular cone base 9, as in FIG. 2 represented, for example, be attached by means of a bond, so that it is sufficient to provide only the other, the armature 5 opposite surface with the lubricating paint coating.
  • the only one-sided coating of the damping disk 6 with a bonded coating has the advantage that the adhesion to the metallic surface of the armature 5 or the pole core 4 is much better.
  • the armature 5 may also have an inner cone, to which the pole face of the pole core 4 is adapted accordingly. Such an embodiment of the armature 5 and the pole core 4 is not shown.
  • FIG. 3 Another embodiment of the pole faces of the pole core 4 and the armature 5 shows FIG. 3 ,
  • This pole core 4 has a cylindrical recess with a bottom surface 11, wherein the cross section in the region of the pole face of the armature 5 is adapted to the diameter of this cylindrical recess, so that the armature 5 can engage in energizing the exciter coil 3 in this cylindrical recess.
  • the armature 5 advances until the defined by a lying between the pole faces damping disk 6 distance of the pole face 12 of the armature 5 to the bottom surface 11 of the cylindrical recess of the pole core 4 is reached.
  • This damping disk 6 is also on one side or on both sides with a bonded coating, as above in connection with FIG. 1 already explained, provided.
  • FIG. 3 illustrated and explained cylindrical recess can be realized instead of the pole core and the armature 5, in which case the pole face of the pole core 4 is adapted thereto.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
EP08021708A 2008-12-15 2008-12-15 Aimant électrique doté d'une plaque d'amortissement Not-in-force EP2197002B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT08021708T ATE523886T1 (de) 2008-12-15 2008-12-15 Elektromagnet mit dämpfungsscheibe
ES08021708T ES2373346T3 (es) 2008-12-15 2008-12-15 Electroimán con disco de amortiguación.
EP08021708A EP2197002B1 (fr) 2008-12-15 2008-12-15 Aimant électrique doté d'une plaque d'amortissement
PL08021708T PL2197002T3 (pl) 2008-12-15 2008-12-15 Elektromagnes z tarczą amortyzującą

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08021708A EP2197002B1 (fr) 2008-12-15 2008-12-15 Aimant électrique doté d'une plaque d'amortissement

Publications (2)

Publication Number Publication Date
EP2197002A1 true EP2197002A1 (fr) 2010-06-16
EP2197002B1 EP2197002B1 (fr) 2011-09-07

Family

ID=40743785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08021708A Not-in-force EP2197002B1 (fr) 2008-12-15 2008-12-15 Aimant électrique doté d'une plaque d'amortissement

Country Status (4)

Country Link
EP (1) EP2197002B1 (fr)
AT (1) ATE523886T1 (fr)
ES (1) ES2373346T3 (fr)
PL (1) PL2197002T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013092461A1 (fr) * 2011-12-20 2013-06-27 Robert Bosch Gmbh Ensemble magnétique comprenant un disque d'entrefer résiduel pour une électrovanne, électrovanne et procédé de fabrication d'un disque d'entrefer résiduel

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1065524A (en) * 1963-10-16 1967-04-19 English Electric Leo Marconi C Improvements relating to electromagnetic arrangements
DE7142492U (de) * 1972-02-03 Binder Magnete Kg Gleichstrom Hubmagnet
JPS6161865A (ja) 1984-08-31 1986-03-29 Sanyo Electric Co Ltd 印字ヘツド
WO1998038439A1 (fr) 1997-02-28 1998-09-03 Fev Motorentechnik Gmbh & Co. Kg Amortisseur d'impact contenant du fluide
EP1244116A2 (fr) * 2001-03-20 2002-09-25 WABCO GmbH & CO. OHG Procédé de fabrication d'une armature
DE10217405A1 (de) 2002-04-18 2003-11-13 Kuhnke Gmbh Kg H Elektromagnetischer Aktuator
US20060054851A1 (en) 2004-09-15 2006-03-16 Young Kevin L Solenoid having reduced operating noise
EP1748238A1 (fr) 2005-07-26 2007-01-31 Festo Ag & Co. Soupape électromagnétique
EP1793149A2 (fr) 2005-12-01 2007-06-06 Schaeffler KG Actionneur électromagnétique

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7142492U (de) * 1972-02-03 Binder Magnete Kg Gleichstrom Hubmagnet
GB1065524A (en) * 1963-10-16 1967-04-19 English Electric Leo Marconi C Improvements relating to electromagnetic arrangements
JPS6161865A (ja) 1984-08-31 1986-03-29 Sanyo Electric Co Ltd 印字ヘツド
WO1998038439A1 (fr) 1997-02-28 1998-09-03 Fev Motorentechnik Gmbh & Co. Kg Amortisseur d'impact contenant du fluide
EP1244116A2 (fr) * 2001-03-20 2002-09-25 WABCO GmbH & CO. OHG Procédé de fabrication d'une armature
DE10217405A1 (de) 2002-04-18 2003-11-13 Kuhnke Gmbh Kg H Elektromagnetischer Aktuator
US20060054851A1 (en) 2004-09-15 2006-03-16 Young Kevin L Solenoid having reduced operating noise
EP1748238A1 (fr) 2005-07-26 2007-01-31 Festo Ag & Co. Soupape électromagnétique
EP1793149A2 (fr) 2005-12-01 2007-06-06 Schaeffler KG Actionneur électromagnétique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013092461A1 (fr) * 2011-12-20 2013-06-27 Robert Bosch Gmbh Ensemble magnétique comprenant un disque d'entrefer résiduel pour une électrovanne, électrovanne et procédé de fabrication d'un disque d'entrefer résiduel

Also Published As

Publication number Publication date
EP2197002B1 (fr) 2011-09-07
ATE523886T1 (de) 2011-09-15
PL2197002T3 (pl) 2012-02-29
ES2373346T3 (es) 2012-02-02

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