EP2197002B1 - Electromagnet with cushioning disc - Google Patents

Electromagnet with cushioning disc Download PDF

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Publication number
EP2197002B1
EP2197002B1 EP08021708A EP08021708A EP2197002B1 EP 2197002 B1 EP2197002 B1 EP 2197002B1 EP 08021708 A EP08021708 A EP 08021708A EP 08021708 A EP08021708 A EP 08021708A EP 2197002 B1 EP2197002 B1 EP 2197002B1
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EP
European Patent Office
Prior art keywords
armature
pole
pole core
face
cone
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.)
Not-in-force
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EP08021708A
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German (de)
French (fr)
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EP2197002A1 (en
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
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Kendrion Binder Magnete GmbH
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Publication date
Application filed by Kendrion Binder Magnete GmbH filed Critical Kendrion Binder Magnete GmbH
Priority to PL08021708T priority Critical patent/PL2197002T3/en
Priority to AT08021708T priority patent/ATE523886T1/en
Priority to ES08021708T priority patent/ES2373346T3/en
Priority to EP08021708A priority patent/EP2197002B1/en
Publication of EP2197002A1 publication Critical patent/EP2197002A1/en
Application granted granted Critical
Publication of EP2197002B1 publication Critical patent/EP2197002B1/en
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    • 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.
  • EP-A 1 748 238 proposes a damper plate assembly composed of a plurality of plates.
  • DE 102 17 405 A1 discloses an electromagnet in which a damping element, which may consist of several layers of different materials, is provided between the core and the armature.
  • WO 98/38439 A and EP-A 1 793 149 show as a damping medium between the armature and pole a liquid in a damper element or air in a pressure chamber.
  • 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.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

The electromagnet (1) comprises a housing (2), a field coil (3), a pole core (4), an adjustable armature (5) for the pole core, and a damping disk (6) arranged between the pole core and the armature. The damping disk is provided with a sliding lacquer coating, particularly made of polytetrafluoroethylene. The turned surface of the damping disk is provided with the sliding lacquer coating.

Description

Die Erfindung betrifft einen Elektromagneten mit einer zwischen einem Polkern und einem verschiebbaren Anker angeordneten Dämpfungsscheibe gemäß Oberbegriff des Patentanspruchs 1.The invention relates to an electromagnet having a damping disk arranged between a pole core and a displaceable armature.

Wird bei einem solchen Elektromagneten die Erregerspule bestromt, bewegt sich der Anker mit hoher Geschwindigkeit in Richtung des Polkerns, so dass die Polfläche des Ankers auf die Polfläche des ruhenden Polkerns unter Erzeugung eines entsprechend lauten Geräusches auftrifft. Um die Geräuschentwicklung bei diesem Vorgang zu reduzieren, ist es bekannt, zwischen den Polflächen von Polkern und Anker eine Dämpfungsscheibe aus Kunststoff, bei hohen Einsatztemperaturen vorzugsweise aus Fluorkautschuk (FKM) oder Silikonkautschuk anzuordnen.If the excitation coil is energized in such an electromagnet, 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. In order to reduce the noise during this process, it is known to arrange 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.

Bei länger anhaltender Bestromung des Elektromagneten kann es durch die dadurch bedingte Druckbelastung des Kunststoffs und insbesondere bei einer erhöhten Temperatur zu einem Klebeeffekt zwischen dem Kunststoff der Dämpfungsscheibe und den metallenen Flächen des Polkerns bzw. des Ankers kommen, mit der Folge eines verzögerten Abfallens des Ankers beim Abschalten der Erregerspule und der Rückführung des Ankers durch beispielsweise eine Rückstellfeder. Diese Abfallverzögerung trifft vor allem nach dem Abschalten und der Abkühlung des Elektromagneten bei einer Wiederbetätigung auf.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.

Eine solche in einem Hubmagnet angeordnete Dämpfungsscheibe ist aus der DE 71 42 492 U bekannt, die auch dazu dient, die Remanenzkräfte zu vermindern und so das Lösen des Ankers durch beispielsweise eine Rückstellfeder zu erleichtern.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.

Ähnliche Hubmagnete mit Dämpfungsscheiben sind darüber hinaus, aus JP 61 061 865 A bekannt. Dort dient als Scheibenmaterial eine Legierung. In US 2006/054 851 A1 wird ein Gummistoff verwendet.Similar solenoids with damping discs are beyond, off JP 61 061 865 A known. There serves as a disc material an alloy. In US 2006/054 851 A1 a rubber is used.

EP-A 1 748 238 schlägt eine Dämpfplattenanordnung vor, die aus mehreren Platten zusammengesetzt ist. DE 102 17 405 A1 offenbart einen Elektromagneten, bei dem zwischen Kern und Anker ein Dämpfungselement, dass aus mehreren Lagen unterschiedlicher Materialien bestehen kann, vorgesehen ist. EP-A 1 748 238 proposes a damper plate assembly composed of a plurality of plates. DE 102 17 405 A1 discloses an electromagnet in which a damping element, which may consist of several layers of different materials, is provided between the core and the armature.

WO 98/38439 A und EP-A 1 793 149 zeigen als Dämpfungsmedium zwischen Magnetanker und Pol eine Flüssigkeit in einem Dämpferelement bzw. Luft in einem Druckraum. WO 98/38439 A and EP-A 1 793 149 show as a damping medium between the armature and pole a liquid in a damper element or air in a pressure chamber.

Aufgabe der Erfindung ist es, einen Elektromagneten mit einer zwischen einem Polkern und einem verschiebbaren Anker angeordneten Dämpfungsscheibe bereitzustellen, bei dem unter allen Betriebsbedingungen des Elektromagneten, insbesondere auch nach Betrieb bei erhöhter Betriebstemperatur keine Klebeeffekte zwischen der Dämpfungsscheibe und der Polfläche des Polkerns bzw. des Ankers kommt.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.

Diese Aufgabe wird gelöst durch einen Elektromagneten mit den Merkmalen des Patentanspruchs 1.This object is achieved by an electromagnet having the features of patent claim 1.

Bei einem solchen Elektromagneten mit einer zwischen einem Polkern und einem verschiebbaren Anker angeordneten Dämpfungsscheibe ist diese Dämpfungsscheibe erfindungsgemäß mit einer Gleitlackbeschichtung, vorzugsweise auf der Basis von Polytetrafluorethylen, versehen.In such an electromagnet with a damping disc arranged between a pole core and a displaceable armature, this damping disk is provided according to the invention with a bonded coating, preferably based on polytetrafluoroethylene.

Eine solche Gleitlackbeschichtung weist eine extrem niedrige Adhäsion auf und ist daher hervorragend als Beschichtung für die Dämpfungsscheibe geeignet, um den oben beschriebenen Klebeeffekt zu verhindern, zumindest erheblich zu verringern.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.

Besonders geeignet ist Polytetrafluorethylen (PTFE), bekannt unter dem Handelsnamen Teflon. Die Adhäsion von Teflon ist bei hoher Temperaturbeständigkeit äußerst gering.Particularly suitable is polytetrafluoroethylene (PTFE), known under the trade name Teflon. The adhesion of Teflon is extremely low with high temperature resistance.

In einer Weiterbildung der Erfindung kann entweder die dem Anker zugewandte Fläche der Dämpfungsscheibe mit der Gleitlackbeschichtung versehen werden, oder die gegenüberliegende Fläche der Dämpfungsscheibe, die dem Polkern zugewandt ist.In a further development of the invention, 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.

Der Vorteil gegenüber einer beidseitigen Beschichtung der Dämpfungsscheibe mit einer Gleitlackschicht liegt darin, dass die unbeschichtete Seite der Dämpfungsscheibe besser mit dem Polkern oder dem Anker verbunden werden kann, da diese Oberfläche eine höhere Haftfähigkeit aufweist.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.

Die erfindungsgemäße Dämpfungsscheibe kann idealerweise an unterschiedlichste Ausgestaltungen der Polflächen des Polkernes und des Ankers angepasst werden. Wenn die dem Anker zugewandte Polfläche des Polkerns mit einem Innenkonus oder einem Außenkonus versehen ist und die Polfläche des Ankers einen hieran angepassten Außenkonus oder Innenkonus aufweist, kann die Dämpfungsscheibe auf dem Konusgrund des Innenkonus des Polkerns oder des Ankers angeordnet werden. Ferner ist es möglich, bei einer solchen Ausgestaltung des Polkerns und des Ankers die Dämpfungsscheibe auf der dem Konusgrund des Innenkonus des Polkerns oder des Ankers gegenüberliegenden Fläche des Außenkonus des Ankers oder des Polkerns anzuordnen.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.

Bei einer anderen vorteilhaften Weiterbildung der Erfindung weist die dem Anker zugewandte Polfläche des Polkerns eine hohlzylindrischen Ausnehmung und der Anker eine hieran angepasste Polfläche auf, wobei die Dämpfungsscheibe in der hohlzylindrischen Ausnehmung der Polfläche des Polkerns angeordnet ist. Ferner kann die Dämpfungsscheibe bei dieser Ausgestaltung der Polflächen auch auf der Polfläche des Ankers angeordnet werden.In another advantageous development of the invention, 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. Furthermore, the damping disk can also be arranged on the pole face of the armature in this embodiment of the pole faces.

Schließlich kann eine solche hohlzylindrische Ausnehmung auch auf der Polfläche des Ankers vorgesehen werden, an die die Polfläche des Polkerns angepasst ist. Die erfindungsgemäße Dämpfungsscheibe kann dann entweder auf der Polfläche des Ankers oder der Polfläche des Polkerns befestigt werden.Finally, 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.

Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf die beigefügten Figuren ausführlich beschrieben. Es zeigen:

Figur 1
eine schematische Schnittdarstellung einer Ausfüh- rungsform des erfindungsgemäßen Elektromagneten,
Figur 2
eine Detailansicht aus der Schnittdarstellung nach Figur 1, und
Figur 3
eine Schnittdarstellung mit einer Detailansicht einer weiteren Ausführungsform des erfindungsgemäßen Elek- tromagneten.
The invention will now be described in detail by means of embodiments with reference to the accompanying figures. Show it:
FIG. 1
1 is a schematic sectional view of an embodiment of the electromagnet according to the invention,
FIG. 2
a detailed view from the sectional view to FIG. 1 , and
FIG. 3
a sectional view with a detailed view of another embodiment of the invention electromagnet.

Der in Figur 1 dargestellte Elektromagnet 1 weist ein weichmagnetisches Gehäuse 2 auf, das eine Erregerspule 3, einen darin zentrisch gelagerten Polkern 4 und einen gegen den Polkern 4 verschiebbaren Anker 5 aufnimmt. Der Anker ist auf der dem Polkern abgewandten Seite auf der Stirnseite des Gehäuses 2 mittels eines Gleitlagers gelagert und auf der gegenüberliegenden Seite mittels einer Achse 7, die in einer zentralen Bohrung des Polkerns 4 hindurchgeführt wird. Auf diese Achse 7 kann verzichtet werden, wenn der Anker 5 in einem dünnwandigen Führungsrohr (nicht dargestellt) gelagert und geführt wird, das von der Erregerspule 3 umschlossen wird.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.

Bei einer Bestromung fährt der Anker 5 in die in der Figur 1 gezeigte Hubendstellung und schlägt dabei mit seiner Polfläche auf die Polfläche des Polkerns 4 auf, wobei ein definierter Abstand zwischen diesen beiden Polflächen durch eine dazwischen angeordnete Dämpfungsscheibe 6 eingehalten wird. Die Dämpfungsscheibe besteht aus Kunststoff, bei hohen Betriebstemperaturen des Elektromagneten 1 insbesondere aus Fluor- oder Silikonkautschuk, wodurch das beim Aufschlagen des Ankers 5 auf den Polkern 4 erzeugte Geräusch reduziert wird.When energized, the armature 5 moves in the in the FIG. 1 shown Hubendstellung 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.

Wird der Strom durch die Erregerspule abgeschaltet, wird der Anker 5 aufgrund der nun fehlenden magnetischen Haltekraft durch eine Rückstellfeder 8 in seine Hubanfangsstellung gezogen. Um einen Klebeeffekt zu verhindern oder zumindest zu reduzieren ist die Dämpfungsscheibe ein- oder beidseitig mit einer Gleitlackbeschichtung versehen, wobei hierfür Polytetrafluorethylen (PTFE), bekannt unter dem Handelsnamen Teflon, als Basis verwendet wird.If the current is turned off by the excitation coil, the armature 5 is pulled due to the now missing magnetic holding force by a return spring 8 in its Hubanfangsstellung. In order to prevent or at least reduce an adhesive effect, 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.

Die Adhäsion von Teflon ist äußerst gering und ist daher als Gleitlackbeschichtung hervorragend für die Dämpfungsscheibe geeignet, um einen Klebeeffekt zu verhindern, zumindest erheblich zu verringern.The adhesion of 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.

In Figur 1 weist die dem Anker 5 gegenüberliegende Fläche des Polkerns 4 eine Innenkonus auf, an den die Polfläche des Ankers 5 mittels eines Außenkonus angepasst ist. Die Dämpfungsscheibe 6 kann mit ihrer einen Fläche auf dem kreisringförmigen Konusgrund 9, wie in Figur 2 dargestellt, beispielsweise mittels einer Klebung befestigt sein, so dass es ausreicht, nur die andere, dem Anker 5 gegenüberliegenden Fläche mit der Gleitlackbeschichtung zu versehen.In 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.

Umgekehrt ist es genauso möglich, die Dämpfungsscheibe 6 an der Fläche 10 (siehe Figur 2) des Ankers 5 zu befestigen.Conversely, it is just as possible, the damping disk 6 on the surface 10 (see FIG. 2 ) of the anchor 5.

Die nur einseitige Beschichtung der Dämpfungsscheibe 6 mit einem Gleitlack bietet den Vorteil, dass die Haftung auf der metallischen Oberfläche des Ankers 5 oder des Polkerns 4 wesentlich besser ist.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.

Umgekehrt wie in den Figuren 1 und 2 dargestellt, kann auch der Anker 5 einen Innenkonus aufweisen, an den die Polfläche des Polkerns 4 entsprechend angepasst ist. Eine solche Ausführung des Ankers 5 und des Polkerns 4 ist nicht dargestellt.Conversely, as in the Figures 1 and 2 illustrated, 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.

Eine andere Ausgestaltung der Polflächen des Polkerns 4 bzw. des Ankers 5 zeigt Figur 3. Dieser Polkern 4 weist eine zylinderförmige Ausnehmung mit einer Bodenfläche 11 auf, wobei der Querschnitt im Bereich der Polfläche des Ankers 5 an den Durchmesser dieser zylindrischen Ausnehmung angepasst ist, so dass der Anker 5 bei Bestromung der Erregerspule 3 in diese zylindrische Ausnehmung einrücken kann. Wie in Figur 3 dargestellt ist, rückt der Anker 5 soweit ein, bis der durch eine zwischen den Polflächen liegende Dämpfungsscheibe 6 definierten Abstand der Polfläche 12 des Ankers 5 zur Bodenfläche 11 der zylindrischen Ausnehmung des Polkerns 4 erreicht ist.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. As in FIG. 3 is shown, 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.

Auch diese Dämpfungsscheibe 6 ist einseitig oder beidseitig mit einer Gleitlackbeschichtung, wie oben im Zusammenhang mit Figur 1 bereits erläutert, versehen.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.

Je nach dem, welche Seite der Dämpfungsscheibe 6 mit der Bodenfläche 11 des Polkerns 4 oder der Polfläche 12 des Ankers 5 verbunden ist, reicht es aus, nur die jeweils andere Seite der Dämpfungsscheibe 6 mit der Gleitlackbeschichtung zwecks besserer Haftung auf der Anker- oder Polkernoberfläche zu versehen. Die nach Figur 3 dargestellte und erläuterte zylindrische Ausnehmung kann anstatt am Polkern auch am Anker 5 realisiert werden, wobei dann die Polfläche des Polkerns 4 hieran anzupassen ist.Depending on which side of the damping disk 6 is connected to the bottom surface 11 of the pole core 4 or the pole face 12 of the armature 5, it is sufficient only the other side of the damping disk 6 with the bonded coating for better adhesion to the armature or Polkernoberfläche to provide. The after 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.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Elektromagnetelectromagnet
22
Gehäusecasing
33
Erregerspuleexcitation coil
44
Polkernpole core
55
Ankeranchor
66
Dämpfungsscheibedamping plate
77
Achseaxis
88th
RückstellfederReturn spring
99
Konusgrund eines InnenkonusCone bottom of an inner cone
1010
Polfläche des Ankers 5Pole surface of the anchor 5
1111
Bodenfläche einer zylindrischen AusnehmungBottom surface of a cylindrical recess
1212
Polflächepole

Claims (9)

  1. Electromagnet (1) comprising a housing (2), a field coil (3), a pole core (4), an armature (5) which is displaceable relative to the pole core (4), and a cushioning disc (6) arranged between the pole core (4) and the armature (5),
    characterised in that
    the cushioning disc (6) is provided with an anti-friction coating, preferably based on polytetrafluoroethylene (PTFE).
  2. Electromagnet according to claim 1,
    characterised in that
    the face of the cushioning disc (6) facing towards the armature (5) is provided with the anti-friction coating.
  3. Electromagnet according to claim 1,
    characterised in that
    the face of the cushioning disc (6) facing towards the pole core (4) is provided with the anti-friction coating.
  4. Electromagnet according to one of the preceding claims,
    characterised in that the pole face of the pole core (4) facing towards the armature (5) is provided with an inward cone or an outward cone,
    - the pole face of the armature (5) has an outward cone or inward cone adapted thereto, and
    - the cushioning disc (6) is arranged on the cone base (9) of the inward cone of the pole core (4) or of the armature (5).
  5. Electromagnet according to one of the preceding claims 1 to 3,
    characterised in that the pole face of the pole core (4) facing towards the armature (5) is provided with an inward cone or an outward cone,
    - the pole face of the armature (5) has an outward cone or inward cone adapted thereto, and
    - the cushioning disc (6) is arranged on the face of the outward cone of the armature (5) or of the pole core (4) located opposite the cone base (9) of the inward cone of the pole core (4) or of the armature (5).
  6. Electromagnet according to one of claims 1 to 3,
    characterised in that
    the pole face of the pole core (4) facing towards the armature (5) is provided with a hollow cylindrical recess (11),
    - the armature (5) has a pole face (12) adapted thereto, and
    - the cushioning disc (6) is arranged in the hollow cylindrical recess (11) of the pole face of the pole core (4).
  7. Electromagnet according to one of the preceding claims 1 to 3,
    characterised in that
    - the pole face of the pole core (4) facing towards the armature (5) is provided with a hollow cylindrical recess (11),
    - the armature (5) has a pole face (12) adapted thereto, and
    - the cushioning disc (6) is arranged on the pole face (12) of the armature (5).
  8. Electromagnet according to one of claims 1 to 3,
    characterised in that
    - the pole face of the armature (5) facing towards the pole core (4) is provided with a hollow cylindrical recess (11),
    - the pole core (4) has a pole face (12) adapted thereto, and
    - the cushioning disc (6) is arranged in the hollow cylindrical recess (11) of the pole face of the armature (5).
  9. Electromagnet according to one of the preceding claims 1 to 3,
    characterised in that
    - the pole face of the armature (5) facing towards the pole core (4) is provided with a hollow cylindrical recess (11),
    - the pole core (4) has a pole face (12) adapted thereto, and
    - the cushioning disc (6) is arranged on the pole face (12) of the pole core (4).
EP08021708A 2008-12-15 2008-12-15 Electromagnet with cushioning disc Not-in-force EP2197002B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL08021708T PL2197002T3 (en) 2008-12-15 2008-12-15 Electromagnet with cushioning disc
AT08021708T ATE523886T1 (en) 2008-12-15 2008-12-15 ELECTROMAGNET WITH DAMPING DISC
ES08021708T ES2373346T3 (en) 2008-12-15 2008-12-15 ELECTROIMAN WITH AMORTIGUATION DISC.
EP08021708A EP2197002B1 (en) 2008-12-15 2008-12-15 Electromagnet with cushioning disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08021708A EP2197002B1 (en) 2008-12-15 2008-12-15 Electromagnet with cushioning disc

Publications (2)

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

Family

ID=40743785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08021708A Not-in-force EP2197002B1 (en) 2008-12-15 2008-12-15 Electromagnet with cushioning disc

Country Status (4)

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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011089127A1 (en) * 2011-12-20 2013-06-20 Robert Bosch Gmbh Magnetic assembly with a residual air gap disc for a solenoid valve, solenoid valve and method for producing a residual air gap disc

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7142492U (en) * 1972-02-03 Binder Magnete Kg DC solenoid
GB1065524A (en) * 1963-10-16 1967-04-19 English Electric Leo Marconi C Improvements relating to electromagnetic arrangements
JPS6161865A (en) 1984-08-31 1986-03-29 Sanyo Electric Co Ltd Printing head
DE29703584U1 (en) 1997-02-28 1998-06-25 Fev Motorentech Gmbh & Co Kg Electromagnetic actuator with fluid impact damping
DE10113316A1 (en) * 2001-03-20 2002-09-26 Wabco Gmbh & Co Ohg Manufacturing process for magnetic armatures
DE10217405B4 (en) 2002-04-18 2005-05-19 Kuhnke Gmbh Electromagnetic actuator
US7159840B2 (en) 2004-09-15 2007-01-09 Stoneridge Control Devices, Inc. Solenoid having reduced operating noise
EP1748238B1 (en) 2005-07-26 2008-01-02 Festo Ag & Co. Electromagnetic valve
DE102005057296A1 (en) 2005-12-01 2007-06-06 Schaeffler Kg Electromagnetic actuator

Also Published As

Publication number Publication date
EP2197002A1 (en) 2010-06-16
PL2197002T3 (en) 2012-02-29
ATE523886T1 (en) 2011-09-15
ES2373346T3 (en) 2012-02-02

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