EP2587495B1 - Dispositif de réglage électromagnétique - Google Patents

Dispositif de réglage électromagnétique Download PDF

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Publication number
EP2587495B1
EP2587495B1 EP11186723.0A EP11186723A EP2587495B1 EP 2587495 B1 EP2587495 B1 EP 2587495B1 EP 11186723 A EP11186723 A EP 11186723A EP 2587495 B1 EP2587495 B1 EP 2587495B1
Authority
EP
European Patent Office
Prior art keywords
adjustment element
section
actuator
adjustment
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.)
Active
Application number
EP11186723.0A
Other languages
German (de)
English (en)
Other versions
EP2587495A1 (fr
Inventor
Thomas Golz
Uwe Wagner
Achim Riedle
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.)
ETO Magnetic GmbH
Original Assignee
ETO Magnetic 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 ETO Magnetic GmbH filed Critical ETO Magnetic GmbH
Priority to EP11186723.0A priority Critical patent/EP2587495B1/fr
Priority to CN201220556862.9U priority patent/CN203179647U/zh
Priority to DE202012104122U priority patent/DE202012104122U1/de
Publication of EP2587495A1 publication Critical patent/EP2587495A1/fr
Application granted granted Critical
Publication of EP2587495B1 publication Critical patent/EP2587495B1/fr
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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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
    • 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
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet

Definitions

  • the present invention relates to an electromagnetic actuator according to the preamble of the main claim, as it is known from DE 10 2006 034 922 A1 is known; For further, generic prior art reference is made to the US 2004/0227604 A1 , Furthermore, the present invention relates to a method for producing an actuating element for an electromagnetic actuating device, in particular for a generic adjusting device.
  • Such devices are known as actuators for a variety of uses.
  • the basic principle is that a plunger-like control element, which forms the end of the engagement region for an associated setting task or a control partner, is guided in a housing as an anchor relative to a stationary core area.
  • the armature movement (and thus the movement of the plunger-like control element) takes place in response to a current supply to a stationary coil unit which, for example in a typical radially symmetrical embodiment of a generic electromagnetic actuator, encloses armature and core unit and thus enables a compact design; the actuator then moves axially along the axis of symmetry.
  • the armature is realized by means of a one-piece, elongated adjusting element made of a soft-magnetic metal material, on which one end ansems a permanent magnet element.
  • This anchor end then acts suitably repellent when energizing the coil unit with the stationary core unit and ensures favorable dynamics and force characteristics of the thus realized adjusting device.
  • the actuating element or the soft magnetic (and thus magnetically conductive) material conventionally used there is disadvantageous.
  • the permanent magnet means are formed as a disc or the like magnetic body with axial magnetization, ie a magnetization direction of this body is parallel to the axial direction of extension of the actuating element, is in the transition or contact area between the permanent magnet means and the Actuator next to the permanent magnetic field or short-circuited, so that this can then no longer kraftentfaltend contribute to the adjustment of the actuator. Accordingly, there is a need for improvement in view of this magnetic-constructive disadvantage.
  • Object of the present invention is therefore to improve a generic electromagnetic actuator both in terms of their continuous operating characteristics, as well as with regard to a magnetic efficiency, while ensuring a simple, especially suitable for large-scale manufacturability.
  • both a wear or the like impairment at the engagement area are to be reduced, and the magnetic properties of the permanent magnet means in cooperation with the core unit when energized associated (stationary) coil means to be improved, such that the permanent magnet means, according to training suitable for mechanical interaction with The actuator formed and trained body, completely without magnetic short or shunt with the stationary components of the magnetic circuit can co-operate.
  • the axially extending along the extension direction, elongated actuator is realized with two sections, wherein a first of the sections is associated with the permanent magnet means and is arranged with respect to its magnetic conductivity so that no magnetic side or shorting the permanent magnet means by the Control element (or provided in the permanent magnet means material of the actuating element) takes place.
  • this feature "no magnetic short-circuiting" is interpreted so that the material of the first section is not or only slightly magnetically conductive, insofar as in contact with the (even axially magnetized) permanent magnet means causes no short and / or shunt for the permanent magnetic field profile , with the result that the magnetic efficiency of the device can be increased.
  • the implementation or design of the engagement section is designed such that its wear resistance (for example, with respect to the material of the first section) is increased.
  • wear resistance for example, with respect to the material of the first section
  • the present invention takes the apparent disadvantage of requiring additional manufacturing effort to realize the two sections of the control element;
  • this additional expense causes advantageous according to the invention that the seemingly contradictory requirements for the actuator, favorable magnetic (magnetic non-conductive) properties on the one hand, on the other hand, hard and wear-resistant material properties for the engagement area on the other hand, can be brought into agreement that both sections on or are formed in the actuator.
  • first and the second section in the form of the first and second actuator element parts by (before joining) separate bodies, these bodies being made of different materials. By selecting and possibly further modifying these materials, the desired property can then be optimized for a respective one of the sections, whereupon the actuating element is produced by (non-detachable) joining of these element parts (and, if necessary, further processed or treated).
  • the basic implementation of the invention consists in that a non-austenitic material (steel) is selected in the region of the engagement region, that is to say for the realization of the second section by means of the second actuator element part; austenitic steel is not considered due to insufficient wear resistance, as noted disadvantageously in the prior art. Rather, for the use of the low magnetic conductivity of austenitic steel, for example, this material is used favorably in the context of the invention for realizing the first section or for configuring the first actuating element part. Likewise, for the second portion (formed by the second actuator member), a hardened steel (for example, as martensitic steel) is selected having favorable hardening properties combined with high strength, wear resistance and resistance to pitting.
  • a hardened steel for example, as martensitic steel
  • a suitable material selection (in particular of the respective steel material) then enables surface hardnesses in the engagement region of more than 50 HRC and / or a case hardening depth (CHD 550 HV) of 0.15 mm or more with correspondingly advantageous effects on the wear resistance at the engagement region of the actuator end to the control partner.
  • the present invention makes it possible to significantly improve the properties of a generic electromagnetic positioning device or an actuating element provided therein in design, material engineering and magnetic extremely efficient manner, so that the already existing advantages of this generic principle can be made accessible to other requirements and applications.
  • the present invention also allows the simple and reliable production of such a powerful actuator.
  • an elongated actuator 14 is shown as a component of an electromagnetic actuator in the schematic longitudinal sectional view; in response to an energization of a coil unit, not shown in the figure, surrounding the control element, the coil unit moves along an axial direction 10 relative to a stationary, symbolically represented core unit 12.
  • actuator or plunger 14 of the first embodiment realized from a first actuator element 16 and a second actuator element 18, which are frontally joined together at a transition point 20 by a friction welding.
  • the plunger 14 is designed to cooperate with an external control partner (not shown) and, for this purpose, has an engagement region 22 which is configured in a manner not shown in detail in accordance with the positioning purpose can be.
  • Opposite at the free end of the formed by the first actuator element portion first acts with this a permanent magnet assembly (permanent magnet means), consisting of a disc-shaped permanent magnet body 24 and a pair of these both sides defining Flußleitusionn 26, 28, together. More specifically, an end portion of the first actuator element 16 engages through a central bore in the disc assembly 24, 26, 28 and is directed with its flat end face on the core portion 12.
  • the first portion 16 embodied by the first actuator element part is formed from an austenitic steel material and, due to the austenitic structure and the associated poor magnetic conductivity, a permanent magnet flux of the permanent magnet element 24 is unaffected (thus also no centric short circuit or shunt of the axial , ie parallel to the axis 10 magnetized body 24 causes), the second portion realizing second actuator element 18 is made of a hardened martensitic steel.
  • Fig. 1 shown embodiment of the invention according to the first embodiment of the present invention underlying object, namely (permanent) magnetic flux optimization in conjunction with the wear side wear improvement or optimization, by choosing different materials for both sections 16 18th
  • FIGS. 2 and 3 show alternative possibilities outside the invention. In this case, equivalent assemblies or functional elements are provided with the same reference numerals.
  • FIG. 2 The longitudinal section view of Fig. 2 shows that in turn two material different actuator elements 16, 18 are joined together, the materials used in the first embodiment of the Fig. 1 correspond.
  • no Reibsch spatagen is provided, but engages, in the manner of a connector, a central projection 32 of the first left-side actuator element 16 in an associated recess 34 of the second actuator element 18 and thus establishes a mechanical connection, which realized in a manner not shown in detail in a positive and / or non-positive manner ..
  • an actuating element as a plunger structure which has advantageous high hardness and wear resistance properties in the engagement region 22, on the other hand in the region of the permanent magnet member 24 is magnetically non-conductive and thus no adverse shunts or the like influences on the permanent magnet body forms.
  • Fig. 3 indicates that these advantageous effects can be realized even with a one-piece plunger 40 as an actuator, as far as the first and the second section seamlessly merge into one another and so far for both sections the same material is used (typically a matallischer or steel material).

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (5)

  1. Dispositif de réglage électromagnétique comprenant
    un élément de réglage (14 ; 40) allongé servant d'armature, constituant du côté de l'extrémité une région de préhension (22) et déplaçable sous l'effet de la force d'un dispositif de bobine prévu de manière stationnaire,
    lequel présente des moyens d'aimants permanents (24) magnétisés en partie et axialement le long d'une direction d'étendue de l'élément de réglage, qui sont réalisés en vue de coopérer avec une région de noyau stationnaire,
    l'élément de réglage présentant deux portions (16, 18) dont une première (16), la portion associée aux moyens d'aimants permanents, est conçue en termes de conductibilité magnétique de telle sorte qu'il ne se produise aucune dérivation et/ou aucun court-circuit magnétique des moyens d'aimants permanents, et dont une deuxième (18), la portion associée à la région de préhension, présente une grande résistance à l'usure,
    la première portion étant formée par une première partie d'élément de réglage (16) et la deuxième portion étant formée par une deuxième partie d'élément de réglage (18) et les deux parties d'élément de réglage étant connectées l'une à l'autre par engagement par force, notamment de manière solidaire en rotation,
    caractérisé en ce que
    la première partie d'élément de réglage est réalisée en acier austénitique et la deuxième partie d'élément de réglage est réalisée en un acier trempé, notamment martensitique et les parties d'élément de réglage sont soudées par friction l'une à l'autre.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    les deux parties d'élément de réglage sont disposées axialement l'une à côté de l'autre.
  3. Dispositif selon la revendication 1 ou 2,
    caractérisé en ce que
    l'élément de réglage est réalisé de manière à pouvoir être commandé pour changer la course de l'arbre à cames d'un moteur à combustion interne.
  4. Procédé de fabrication d'un élément de réglage pour un dispositif de réglage électromagnétique selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    la première et la deuxième partie d'élément de réglage (16, 18) sont connectées l'une à l'autre pour constituer l'élément de réglage (14) par soudage par friction, notamment par soudage par friction axial le long d'une direction d'étendue axiale de l'élément de réglage réalisé sous forme allongée.
  5. Procédé selon la revendication 4,
    caractérisé en ce que
    l'élément de réglage est traité thermiquement pour le revenu après le soudage par friction au moins au niveau d'une portion d'extrémité réalisée de manière résistant à l'usure.
EP11186723.0A 2011-10-26 2011-10-26 Dispositif de réglage électromagnétique Active EP2587495B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11186723.0A EP2587495B1 (fr) 2011-10-26 2011-10-26 Dispositif de réglage électromagnétique
CN201220556862.9U CN203179647U (zh) 2011-10-26 2012-10-26 电磁致动装置
DE202012104122U DE202012104122U1 (de) 2011-10-26 2012-10-26 Elektromagnetische Stellvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11186723.0A EP2587495B1 (fr) 2011-10-26 2011-10-26 Dispositif de réglage électromagnétique

Publications (2)

Publication Number Publication Date
EP2587495A1 EP2587495A1 (fr) 2013-05-01
EP2587495B1 true EP2587495B1 (fr) 2014-12-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11186723.0A Active EP2587495B1 (fr) 2011-10-26 2011-10-26 Dispositif de réglage électromagnétique

Country Status (3)

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EP (1) EP2587495B1 (fr)
CN (1) CN203179647U (fr)
DE (1) DE202012104122U1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012222370A1 (de) * 2012-12-06 2014-06-12 Schaeffler Technologies Gmbh & Co. Kg Schiebenockensystem und Schiebenockenaktor mit an einer Permanentmagneteinheit angebundenem Laufpin
DE102013108029B4 (de) 2013-07-26 2023-01-19 Eto Magnetic Gmbh Elektromagnetische Stellvorrichtung
DE102013108027A1 (de) 2013-07-26 2015-01-29 Eto Magnetic Gmbh Elektromagnetische Stellvorrichtung und System zur Verstellung einer Funktionalität eines Kraftfahrzeugaggregats
EP3016117B1 (fr) 2014-10-31 2017-12-06 Husco Automotive Holdings LLC Appareil d'actionneur de broche-poussoir
DE102016111535A1 (de) 2015-07-24 2017-01-26 Denso Corporation Solenoid-Aktuator
JP6586918B2 (ja) 2016-04-14 2019-10-09 株式会社デンソー 電磁アクチュエータ
DE102016012813A1 (de) 2016-10-01 2017-04-27 Daimler Ag Aktor für eine Nockenwellenverstellvorrichtung einer Verbrennungskraftmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20114466U1 (de) 2001-09-01 2002-01-03 Eto Magnetic Kg Elektromagnetische Stellvorrichtung
DE10235644B4 (de) * 2002-08-02 2004-10-21 Eto Magnetic Kg Elektromagnetische Stellvorrichtung
US7221248B2 (en) * 2003-05-15 2007-05-22 Grand Haven Stamped Products Solenoid with noise reduction
DE102006034922A1 (de) * 2006-07-28 2008-01-31 Schaeffler Kg Elektromagnetische Stellvorrichtung und Verfahren zu deren Herstellung
DE202006011905U1 (de) * 2006-08-03 2007-12-06 Eto Magnetic Kg Elektromagnetische Stellvorrichtung
DE102009060406B4 (de) * 2008-12-23 2018-07-19 Svm Schultz Verwaltungs-Gmbh & Co. Kg Polrohr eines Elektromagneten

Also Published As

Publication number Publication date
CN203179647U (zh) 2013-09-04
DE202012104122U1 (de) 2013-03-18
EP2587495A1 (fr) 2013-05-01

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