EP2878001A2 - Electromagnetic positioning device - Google Patents

Electromagnetic positioning device

Info

Publication number
EP2878001A2
EP2878001A2 EP13731701.2A EP13731701A EP2878001A2 EP 2878001 A2 EP2878001 A2 EP 2878001A2 EP 13731701 A EP13731701 A EP 13731701A EP 2878001 A2 EP2878001 A2 EP 2878001A2
Authority
EP
European Patent Office
Prior art keywords
unit
armature
housing
permanent magnet
permanent
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
EP13731701.2A
Other languages
German (de)
French (fr)
Other versions
EP2878001B1 (en
Inventor
Thomas Golz
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
Publication of EP2878001A2 publication Critical patent/EP2878001A2/en
Application granted granted Critical
Publication of EP2878001B1 publication Critical patent/EP2878001B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1623—Armatures having T-form
    • 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
    • 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

Definitions

  • the present invention relates to an electromagnetic actuator according to the preamble of the main claim.
  • Such devices which are presupposed and established as generic, combine high operational reliability and low wear with favorable electromagnetic and manufacturing properties, the latter making the known technology particularly suitable for mass production.
  • it is necessary to enclose, at least in part or in sections, the stationary core region up to the permanent magnet unit of the armature unit, which was realized in concrete realizations of the technology according to DE 20 2009 010 495 by bow-shaped housing elements.
  • flow-conducting housing parts limit the minimum installation dimensions that can be achieved, in fact giving a minimum distance of approximately a plurality adjacent to one another Actuators before. Accordingly, there is a need for a compact, in particular in the radial direction, to be realized housing structure.
  • a further disadvantage of the cited generic type technology which is in need of improvement is that in a de-energized stop state of the armature unit (typically in the retracted state of the tappet unit), adhesive forces which hold the armature unit to the core area are limited. Accordingly, there is no (or only a very limited) possibility to provide a compression spring or the like force accumulator between the armature unit and the core unit, with which then, to achieve high dynamic properties (corresponding approximately to a high start-up acceleration of the armature unit) in the energization case Anchor unit can be driven out of the stop or rest position: The holding forces at rest determine so far a maximum, usable here spring force.
  • Object of the present invention is therefore to improve a generic electromagnetic actuator both in terms of their dynamic characteristics, in particular their movement and acceleration behavior with application of the energization, as well as to make the device in the radial direction more compact, with the purpose of a possible Minimum distance between adjacent plunger units of a plurality of adjacent and parallel to each other provided adjusting devices to reduce.
  • magnetically nonconductive bushing means provided by the shell side of a shaft portion of the armature unit cause magnetic flux conduction such that in the de-energized (stop) state of the armature unit, the permanent magnet flux of the permanent magnet means provided in or on the armature unit, for Closing of a permanent magnetic flux circuit, both by the shaft portion (the anchor unit) flows, and, radially outward, by the radially enclosing core region, more preferably, this permanent magnetic flux guide in the de-energized state is designed so that the permanent magnet flux to the (magnetically non-conductive ) Flows around the socket.
  • An advantageous result in the context of the invention is a good permanent magnetic adhesion of the armature unit to the core unit in the de-energized state, since, as opposed to the generic DE 20 2009 010 495, an axially acting working air gap between a portion of the armature unit and one end of the core unit can be produced without additional components with a small air gap.
  • this improved permanent-magnetic adhesive force is then the possibility of biasing the armature unit against the core area or another stationary section by means of suitable spring means, which can be configured as a spiral and / or compression spring, to improve the movement or dynamic properties of the device ,
  • suitable spring means which can be configured as a spiral and / or compression spring, to improve the movement or dynamic properties of the device .
  • a displacement of the permanent magnetic flux from the core unit and into a (magnetically conductive) housing section, which interacts with the ram unit to form a flux circuit is advantageous by energizing the coil unit, this pressure spring can, in addition to the (electro) magnetic repulsion, Accelerate anchor unit and thus improve the dynamic behavior of the anchor unit in the desired manner.
  • the plunger unit in particular at its directed to the permanent magnet means end, included in a magnetic flux guide and thus makes it possible in particular, that geometrically advantageous and space-saving in terms of a radial installation cavities, lateral housing or Flußleitabitese , as they were necessary in the generic state of the art, can be saved.
  • the spring means designed as a spiral and / or compression spring into an end section of the armature unit (more precisely, the shaft section of the armature unit) in such a way that additional space-saving action is taken can; It is typically possible without disadvantages in the magnetic efficiency to insert such a coil spring, which is advantageously to be used, into an end-side inner widening of the shaft section and to support it at one end on a corresponding inside annular shoulder in the armature unit, at the other end on a core-side, stationary section.
  • the elongate ram unit realized at least in the direction of the permanent magnet means of a suitable soft magnetic and / or magnetically conductive material, detachably on the shaft section of the armature unit, with the result that the armature unit has a plurality of parts (Shank section, ram unit) is realized.
  • the permanent magnet means attached to the armature unit are made of a suitable permanent magnet material and axially magnetized, i. in a magnetization direction which runs parallel to the direction of movement of the armature unit and to a longitudinal axis through the shaft portion of the armature unit.
  • the permanent magnet flux of the permanent magnet unit is displaced in such a way that it forms a closed (permanent magnet) section over a section of the housing and a permanent magnet side end region of the ram unit.
  • Flow circuit forms - is the housing, at least in the region of the plunger unit, advantageously and further configured such that it has a cup shape or bow shape and / or radially surrounds the (further advantageously radially widened in this area) shaft portion in the outer region.
  • An air gap to the tappet unit can, for example, and preferably be done by the housing section for passing the (elongated) ram unit offers a suitable, adapted to an outer diameter of the ram unit breakthrough and so the inventive, displaced permanent magnet flux not only act as a flux circuit for the energization state of the coil unit can, but in addition and advantageously by the housing portion, in particular a front-side housing portion, a stop for an extended state of the anchor unit can be created; Also in this extended stop state of the anchor unit so that closing the permanent magnetic circuit according to the invention on the housing section, the portion of the plunger unit and possibly an additional, axially remote from the plunger unit (based on the permanent magnet means) Flußleitabites the armature unit, so that even with again de-energized Coil unit in this extended stop state, a stable stop position can be achieved, as far as a bistable switching behavior of the device can be achieved.
  • the bushing means made of a steel sleeve 1 .4301 are pressed into the core section, so that not only a mechanically stable and non-detachable connection results, but also a section the socket out of the core region and protrudes, with the possibility that the socket can then be surrounded on the outside not only on the inside by the anchor unit, but also on this protruding portion of the anchor unit.
  • the present invention makes it possible to further develop a generic electromagnetic actuator with a reduced diameter in the core region and improved dynamic or acceleration properties, so that in a particularly preferred field of application of the present invention, namely the controller of functionalities of a Internal combustion engine, here new and additionally advantageous applications are opened.
  • the present invention is not limited to the field of application "engine technology”, but rather the device according to the invention is suitable for any application in which a simple to produce, simultaneously powerful electromagnetic actuator technology is to be combined with advantageous flow control properties.
  • Fig. 1 a schematic longitudinal sectional view through the electromagnetic
  • Adjusting device in a de-energized operating state of the coil unit
  • FIG. 2 a representation analogous to FIG. 1 at a time at which a
  • FIG. 3 is a representation of the adjusting device analogous to FIG. 1, FIG. 2 in the energization state of the coil unit in terms of time after the state of FIG pushed out or extended position of the plunger unit moving armature unit, hinged to an opposite housing stop position.
  • the radially symmetrically constructed device consists of a stationary The core unit 10 (ie assembled and even immovable), which forms a bottom section 12 on the end side and is enclosed on the shell side by a coil unit 14 held on a coil carrier (not shown).
  • An armature unit 18 is formed by means of a shaft section 20 immersed in the core section 10, which is widened at the end of the bottom section 12 by means of a flange section 16, the shaft section having a radial extension 22 of an axially extending opening in the direction of the bottom 12, into which extension a spiral spring 24 is set, which, the armature unit biasing with its spring force, supported by the bottom element 12.
  • the shaft section 20 of the armature unit 18 has a flange-like widening section 26, to which an annular permanent magnet 28, axially magnetized in a direction parallel to the longitudinal extension of the shaft section 20, is attached, so that the flange-like widening section 26, together with a further flange section 30 of the armature unit, axially acting on both sides of the permanent magnet ring as Flußleitele- elements acts.
  • An implemented from soft iron, elongated-cylindrical ram unit 31 is magnetically adhering to the outside on the flange portion 26 and passes through an opening 33 in a housing 35 (can also sit directly in a mecanicsroh).
  • a hollow cylindrical bushing 32 of steel 1 .4301 is pressed into the core unit 10, that the inside of the socket this over the entire surface on a shell portion of the shaft portion 20 - slidably - seated in the outer region of the sleeve 32, an axial longitudinal section by a press fit the material of the core unit 10 is formed and a further axial longitudinal section of the bush, axially adjacent, of the anchor unit, specifically, the flux guide portion, the permanent magnet unit 28 and the portion 26, is overlapped.
  • the device is dimensioned and set up in such a way that the permanent-magnetic adhesive force in this operating state is higher than a compressive force of the coil spring 24 acting on the armature unit.
  • the arrow 42 illustrates the electromagnetically generated coil magnetic field (again, for simplicity, only one side of the radially symmetrical device is provided with arrows), wherein the arrows 42 displace the permanent magnetic flux 40 'out of the core unit 10 into a permanent magnetic flux circuit, which is now formed is from the flux guide 30, a radially enclosing, cup-shaped housing portion 50 of the housing 35, in a sitting thereon Gescousedeckelab4.000 52, into a permanent magnet side ram end portion 54 of the plunger unit 31, and over the Flußleitabites 26 up to the axially magnetized permanent magnet ring 28th
  • the electromagnetic flux 42 then acts not only repulsively on the armature unit, but also the flux-displacement overcomes the permanent-magnetic adhesion of the armature unit to the core unit, and in addition acceleratingly, the compression spring 24 now acts on the armature unit Anchor unit to drive the ram unit out of the housing 35 (direction of movement downwards in the plane of the drawing of FIGS. 1 to 3).
  • FIG. 3 The final state of this drive movement is shown in Fig. 3, with still energized coil unit and partially relaxed coil spring 24:
  • the housing portion 52 forms on the inside the stop for the armature unit 18, which with the Flußleitabites 26 to the suitably magnetically conductive, e.g. soft magnetic material strikes.
  • the present invention is not limited to the embodiment shown; Rather, numerous other variants and configurations for respective applications are conceivable, in which according to the invention, the permanent magnetic flow diversion or displacement can be done to increase the dynamic behavior.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Valve Device For Special Equipments (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

The invention relates to an electromagnetic positioning device having an armature unit (18) that can be actuated as a reaction to a current supply of a stationary coil unit (14) relative to a stationary core unit (10), which armature unit has permanent-magnetic means (28) and a tappet unit (31) that is led out of a magnetically flow-conducting housing (35), wherein on the shell side of a shaft section (20) of the armature unit (18) magnetically non-conducting socket means (32) are provided in such a way that in a state of the coil unit (14) in which no current is supplied a permanent-magnetic flow (40) of the permanent-magnet means (28) flows through the core unit (10) and the shaft section (20) for retaining the armature unit (18) on the core unit (10) and in a state of the coil unit (14) in which current is supplied the permanent-magnetic flow (40', 40") is displaced from the core unit (10) into a housing section (50, 52) of the housing and a permanent-magnetic flow circuit is closed via a section (54) of the tappet unit on the housing side.

Description

Elektromagnetische Stellvorrichtung  Electromagnetic actuator
Die vorliegende Erfindung betrifft eine elektromagnetische Stellvorrichtung nach dem Oberbegriff des Hauptanspruchs. The present invention relates to an electromagnetic actuator according to the preamble of the main claim.
Eine derartige Vorrichtung ist für vielfältige Stellaufgaben, etwa im Zusammenhang mit Verbrennungsmotoren, allgemein bekannt und wird in Großserie hergestellt. Das deutsche Gebrauchsmuster 20 2009 010 495 der Anmelderin zeigt eine derartige, als gattungsbildend vorausgesetzte elektromagnetische Stellvorrichtung, bei welcher ein langgestreckter Stößel als Stößeleinheit Teil einer mehrteiligen Ankereinheit ist, welche wiederum, radialsymmetrisch ausgebildet, durch Bestromen einer stationären Spuleneinheit relativ zu einer stationären Kerneinheit zum Bewegen des Stößels angetrieben werden kann. Die Stößel- einheit wiederum greift endseitig in einen Stellpartner, im Ausführungsbeispiel eine eine Nockenwellenverstellung eines Verbrennungsmotors bewirkende Nut, ein. Such a device is well known for a variety of control tasks, such as in connection with internal combustion engines and is mass produced. Applicant's German Utility Model 20 2009 010 495 shows such an electromagnetic actuator, which is assumed to be generic, in which an elongate plunger as a plunger unit is part of a multi-part armature unit, which in turn, designed radially symmetrically, by energizing a stationary coil unit relative to a stationary core unit to move the ram can be driven. The plunger unit, in turn, engages in an adjusting partner at the end, in the exemplary embodiment a groove which effects a camshaft adjustment of an internal combustion engine.
Derartige, als gattungsbildend vorausgesetzte und etablierte Vorrichtungen ver- binden hohe Betriebssicherheit und Verschleißarmut mit günstigen elektromagnetischen und Fertigungseigenschaften, wobei letztere die bekannte Technologie insbesondere für die Massenfertigung tauglich machen. Allerdings ist es bei derartigen Vorrichtungen erforderlich, zumindest teilweise bzw. abschnittsweise den stationären Kernbereich bis zur Permanentmagneteinheit der Ankereinheit zu umschließen, was bei konkreten Realisierungen der Technologie gemäß DE 20 2009 010 495 durch bügelartige Gehäuseelemente realisiert wurde. Insbesondere bei platzkritischen Einbauräumen, wie etwa an einem Verbrennungsmotor-Nockenwellenbereich, beschränken jedoch derartige flussleitende Gehäuseteile die erreichbaren minimalen Einbaumaße, geben faktisch einen minimalen Abstand etwa einer Mehrzahl zueinander benachbart vorzusehender Stellvorrichtungen vor. Entsprechend besteht Bedarf nach einer kompakter, insbesondere in radialer Richtung, zu realisierender Gehäusestruktur. Such devices, which are presupposed and established as generic, combine high operational reliability and low wear with favorable electromagnetic and manufacturing properties, the latter making the known technology particularly suitable for mass production. However, with such devices, it is necessary to enclose, at least in part or in sections, the stationary core region up to the permanent magnet unit of the armature unit, which was realized in concrete realizations of the technology according to DE 20 2009 010 495 by bow-shaped housing elements. However, especially in space-critical installation spaces, such as on an internal combustion engine camshaft area, such flow-conducting housing parts limit the minimum installation dimensions that can be achieved, in fact giving a minimum distance of approximately a plurality adjacent to one another Actuators before. Accordingly, there is a need for a compact, in particular in the radial direction, to be realized housing structure.
Ein weiterer, verbesserungsbedürftiger Nachteil der zitierten gattungsbildenden Technologie besteht darin, dass in einem unbestromten Anschlagzustand der Ankereinheit (typischerweise im zurückgezogenen Zustand der Stößeleinheit) Haftkräfte, welche die Ankereinheit am Kernbereich halten, begrenzt sind. Entsprechend gibt es keine (oder nur eine sehr begrenzte) Möglichkeit, eine Druckfeder oder dergleichen Kraftspeicher zwischen der Ankereinheit und der Kern- einheit vorzusehen, mit welcher dann, zum Erreichen hoher Dynamikeigenschaften (entsprechend etwa einer hohen Start-Beschleunigung der Ankereinheit) im Bestromungsfall die Ankereinheit aus der Anschlag- bzw. Ruheposition heraus getrieben werden kann: Die Haltekräfte im Ruhezustand bestimmen insoweit eine maximale, hier nutzbare Federkraft. Entsprechend ist es aus dieser Sicht wünschenswert, permanentmagnetisch bewirkte Haltekräfte der Ankereinheit am stationären Kernbereich (Kerneinheit) zu erhöhen, um insoweit eine wirksamere Federunterstützung der Ankerbewegung ermöglichen zu können. Aufgabe der vorliegenden Erfindung ist es daher, eine gattungsgemäße elektromagnetische Stellvorrichtung sowohl im Hinblick auf ihre Dynamikeigenschaften, insbesondere ihr Bewegungs- und Beschleunigungsverhalten mit Anlegen der Bestromung, zu verbessern, als auch die Vorrichtung in radialer Richtung kompakter zu gestalten, mit dem Zweck, einen möglichen Mindestabstand zu- einander benachbarter Stößeleinheiten einer Mehrzahl von benachbart und parallel zueinander vorgesehenen Stellvorrichtungen zu vermindern. A further disadvantage of the cited generic type technology which is in need of improvement is that in a de-energized stop state of the armature unit (typically in the retracted state of the tappet unit), adhesive forces which hold the armature unit to the core area are limited. Accordingly, there is no (or only a very limited) possibility to provide a compression spring or the like force accumulator between the armature unit and the core unit, with which then, to achieve high dynamic properties (corresponding approximately to a high start-up acceleration of the armature unit) in the energization case Anchor unit can be driven out of the stop or rest position: The holding forces at rest determine so far a maximum, usable here spring force. Accordingly, it is desirable from this point of view to increase permanent magnetically caused holding forces of the armature unit on the stationary core region (core unit), in order to allow a more effective spring support of the armature movement. Object of the present invention is therefore to improve a generic electromagnetic actuator both in terms of their dynamic characteristics, in particular their movement and acceleration behavior with application of the energization, as well as to make the device in the radial direction more compact, with the purpose of a possible Minimum distance between adjacent plunger units of a plurality of adjacent and parallel to each other provided adjusting devices to reduce.
Die Aufgabe wird durch die elektromagnetische Stellvorrichtung mit den Merkmalen des Hauptanspruchs gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben. In erfindungsgemäß vorteilhafter Weise wird durch die mantelseitig eines Schaftabschnitts der Ankereinheit vorgesehene, magnetisch nicht leitenden Buchsenmittel eine magnetische Flussführung derart bewirkt, dass in dem un- bestromten (Anschlag-) Zustand der Ankereinheit der Permanentmagnetfluss der in bzw. an der Ankereinheit vorgesehenen Permanentmagnetmittel, zum Schließen eines permanentmagnetischen Flusskreises, sowohl durch den Schaftabschnitt (der Ankereinheit) fließt, als auch, radial auswärts, durch den radial umschließenden Kernbereich, wobei weiter bevorzugt diese permanentmagnetische Flussführung im unbestromten Zustand so ausgestaltet ist, dass der Permanentmagnetfluss um die (erfindungsgemäß magnetisch nicht leitende) Buchse herumfließt. The object is achieved by the electromagnetic actuator with the features of the main claim. Advantageous developments of the invention are described in the subclaims. In accordance with the invention, magnetically nonconductive bushing means provided by the shell side of a shaft portion of the armature unit cause magnetic flux conduction such that in the de-energized (stop) state of the armature unit, the permanent magnet flux of the permanent magnet means provided in or on the armature unit, for Closing of a permanent magnetic flux circuit, both by the shaft portion (the anchor unit) flows, and, radially outward, by the radially enclosing core region, more preferably, this permanent magnetic flux guide in the de-energized state is designed so that the permanent magnet flux to the (magnetically non-conductive ) Flows around the socket.
Vorteilhaftes Ergebnis im Rahmen der Erfindung ist eine gute permanentmagnetische Haftung der Ankereinheit an der Kerneinheit in dem unbestromten Zu- stand, da, insoweit in Abgrenzung zur gattungsbildenden DE 20 2009 010 495, ein axial wirkender Arbeitsluftspalt zwischen einem Abschnitt der Ankereinheit und einem Ende der Kerneinheit ohne zusätzliche Bauteile mit geringem Luftspalt erzeugt werden kann. Vorteil dieser verbesserten permanentmagnetischen Haftkraft ist dann die Möglichkeit, zur Verbesserung der Bewegungs- bzw. Dynamikeigenschaften der Vorrichtung die Ankereinheit mittels geeigneter Federmittel, welche weiter bevorzugt als Spiral- und/oder Druckfeder ausgestaltet sein können, gegen den Kernbereich bzw. einen anderen stationären Abschnitt vorzuspannen. Erfolgt dann erfindungsgemäß vorteilhaft durch das Bestromen der Spuleneinheit eine Verdrängung des permanentmagnetischen Flusses aus der Kerneinheit und in einen (magnetisch leitenden) Gehäuseabschnitt, welcher zum Ausbilden eines Flusskreises mit der Stößeleinheit zusammenwirkt, kann diese Druckfeder, zusätzlich zur (elektro-) magnetischen Abstoßung, die Ankereinheit beschleunigen und so in der gewünschten Weise das Dynamikverhalten der Ankereinheit verbessern. Erfindungsgemäß vorteilhaft ist zu diesem Zweck die Stößeleinheit, insbesondere an ihrem auf die Permanentmagnetmittel gerichteten Ende, einbezogen in eine magnetische Flussführung und ermöglicht es somit insbesondere, dass, geometrisch vorteilhaft und platzsparend im Hinblick auf einen radialen Einbau- räum, seitliche Gehäuse- bzw. Flussleitabschnitte, wie sie beim gattungsbildenden Stand der Technik notwendig waren, eingespart werden können. An advantageous result in the context of the invention is a good permanent magnetic adhesion of the armature unit to the core unit in the de-energized state, since, as opposed to the generic DE 20 2009 010 495, an axially acting working air gap between a portion of the armature unit and one end of the core unit can be produced without additional components with a small air gap. The advantage of this improved permanent-magnetic adhesive force is then the possibility of biasing the armature unit against the core area or another stationary section by means of suitable spring means, which can be configured as a spiral and / or compression spring, to improve the movement or dynamic properties of the device , If, in accordance with the invention, a displacement of the permanent magnetic flux from the core unit and into a (magnetically conductive) housing section, which interacts with the ram unit to form a flux circuit, is advantageous by energizing the coil unit, this pressure spring can, in addition to the (electro) magnetic repulsion, Accelerate anchor unit and thus improve the dynamic behavior of the anchor unit in the desired manner. According to the invention advantageous for this purpose, the plunger unit, in particular at its directed to the permanent magnet means end, included in a magnetic flux guide and thus makes it possible in particular, that geometrically advantageous and space-saving in terms of a radial installation cavities, lateral housing or Flußleitabschnitte , as they were necessary in the generic state of the art, can be saved.
Dabei ist es in einer konkreten, vorteilhaften Realisierung der Erfindung weiterbildungsgemäß besonders vorteilhaft, die als Spiral- und/oder Druckfeder aus- gestalteten Federmittel so in einen Endabschnitt der Ankereinheit (genauer: des Schaftabschnitts der Ankereinheit) zu integrieren, dass hier zusätzlich platzsparend vorgegangen werden kann; typischerweise ist es ohne Nachteile im magnetischen Wirkungsgrad möglich, eine derartige, vorteilhaft einzusetzende Spiralfeder etwa in eine endseitige innere Aufweitung des Schaftabschnitts einzu- setzen und sie einends an einem entsprechenden innenseitigen Ringabsatz in der Ankereinheit, anderenends an einem kernseitigen, stationären Abschnitt abzustützen. In a concrete, advantageous realization of the invention, it is particularly advantageous in terms of further development to integrate the spring means designed as a spiral and / or compression spring into an end section of the armature unit (more precisely, the shaft section of the armature unit) in such a way that additional space-saving action is taken can; It is typically possible without disadvantages in the magnetic efficiency to insert such a coil spring, which is advantageously to be used, into an end-side inner widening of the shaft section and to support it at one end on a corresponding inside annular shoulder in the armature unit, at the other end on a core-side, stationary section.
Besonders bevorzugt ist es im Rahmen der Erfindung, die langgestreckt aus- gestaltete Stößeleinheit, zumindest in Richtung auf die Permanentmagnetmittel aus einem geeigneten weichmagnetischen und/oder magnetisch leitenden Material realisiert, lösbar an dem Schaftabschnitt der Ankereinheit vorzusehen, mit dem Ergebnis, dass die Ankereinheit mehrteilig (Schaftabschnitt, Stößeleinheit) realisiert ist. Besonders bevorzugt ist es bei dieser Realisierungsform, einen zum Zusammenwirken mit dem zugehörigen Ende der Stößeleinheit vorgesehenen Endabschnitt des Schaftabschnitts geeignet flächig und/oder sich radial erweiternd auszubilden, wobei in der praktischen Realisierung vorteilhaft dies etwa durch einen scheibenförmigen Flussleitabschnitt realisiert sein kann, welcher endseitig an der (weiterbildungsgemäß wiederum ring- und/oder scheiben- förmigen) Permanentmagneteinheit (als Permanentmagnetmittel) ansitzt. Insbesondere eine derartige Konfiguration ermöglicht es dann, durch Permanentmagnetwirkung, weiterbildungsgemäß lediglich durch die Permanentmagnetwirkung der ohnehin ankerseitig vorhandenen Permanentmagnetmittel, die Stößeleinheit lösbar am Endabschnitt des Schaftabschnitts haften zu lassen, so dass größtmögliche Flexibilität, verbunden mit Toleranzausgleichsmöglichkeiten im Einbau- und Betriebszustand realisierbar sind. Ergänzend oder alternativ ist es denkbar, die Stößeleinheit selbst (zumindest abschnittsweise) permanentmagnetisch auszugestalten, um eine derartige magnetische Haftwirkung zu realisieren. Within the scope of the invention, it is particularly preferred to provide the elongate ram unit, realized at least in the direction of the permanent magnet means of a suitable soft magnetic and / or magnetically conductive material, detachably on the shaft section of the armature unit, with the result that the armature unit has a plurality of parts (Shank section, ram unit) is realized. In this embodiment, it is particularly preferable to design a flat and / or radially widening end section of the shank section suitable for cooperation with the associated end of the ram unit, which in the practical realization may advantageously be implemented by a disk-shaped flux guide section, which end side the (in accordance with the training again annular and / or disk-shaped) permanent magnet unit (as a permanent magnet means) ansitzt. In particular, such a configuration then makes it possible, by permanent magnet action, according to training only by the permanent magnet effect of the already existing anchor permanent magnet means, the plunger unit releasably adhere to the end portion of the shaft portion, so that maximum flexibility, combined with tolerance compensation options in installation and operating conditions can be realized. Additionally or alternatively, it is conceivable to design the ram unit itself (at least in sections) permanently magnetically, in order to realize such a magnetic adhesive effect.
Die an bzw. in der Ankereinheit, weiter bevorzugt unlösbar befestigten Permanentmagnetmittel sind aus einem geeigneten Permanentmagnetmaterial hergestellt und axial magnetisiert, d.h. in einer Magnetisierungsrichtung, welche parallel zur Bewegungsrichtung der Ankereinheit sowie zu einer Längsachse durch den Schaftabschnitt der Ankereinheit verläuft. The permanent magnet means attached to the armature unit, more preferably permanently attached, are made of a suitable permanent magnet material and axially magnetized, i. in a magnetization direction which runs parallel to the direction of movement of the armature unit and to a longitudinal axis through the shaft portion of the armature unit.
Zum erfindungsgemäßen Einbeziehen der Stößeleinheit (bzw. eines Endabschnitts der Stößeleinheit) in einen magnetischen Flusskreis bei bestromter Spuleneinheit - in diesem Betriebszustand wird der Permanentmagnetfluss der Permanentmagneteinheit so verdrängt, dass er über einen Abschnitt des Gehäuses und einen permanentmagnetseitigen Endbereich der Stößeleinheit einen geschlossenen (Permanentmagnet-) Flusskreis bildet - ist das Gehäuse, zumindest im Bereich der Stößeleinheit, vorteilhaft und weiterbildend so ausgestaltet, dass es eine Becherform oder Bügelform besitzt und/oder den (weiter vorteilhaft in diesem Bereich radial verbreiterten) Schaftabschnitt im Außenbereich radial umschließt. Ein Luftspalt zu der Stößeleinheit kann beispielsweise und bevorzugt dadurch geschehen, dass der Gehäuseabschnitt zum Hindurchführen der (langgestreckten) Stößeleinheit einen geeigneten, an einen Außendurchmesser der Stößeleinheit angepassten Durchbruch anbietet und so der erfindungsgemäße, verdrängte Permanentmagnetfluss nicht nur als Flusskreis für den Bestromungszustand der Spuleneinheit wirken kann, sondern zusätzlich und vorteilhaft durch den Gehäuseabschnitt, insbesondere einen stirnseitigen Gehäuseabschnitt, ein Anschlag für einen ausgefahrenen Zustand der Ankereinheit geschaffen werden kann; auch in diesem ausgefahrenen Anschlagzustand der Ankereinheit erfolgt damit das erfindungsgemäße Schließen des permanentmagnetischen Flusskreises über den Gehäuseabschnitt, den Abschnitt der Stößeleinheit und ggf. einen zusätzlichen, von der Stößeleinheit axial abgewandten (bezogen auf die Permanentmagnetmittel) Flussleitabschnitt der Ankereinheit, so dass selbst bei wiederum unbestromter Spuleneinheit in diesem ausgefahrenen Anschlagzustand eine stabile Anschlagposition erreicht werden kann, insoweit ein bistabiles Schaltverhalten der Vorrichtung erreichbar ist. In order to incorporate the ram unit (or an end section of the ram unit) into a magnetic flux circuit when the coil unit is energized, in this operating state, the permanent magnet flux of the permanent magnet unit is displaced in such a way that it forms a closed (permanent magnet) section over a section of the housing and a permanent magnet side end region of the ram unit. ) Flow circuit forms - is the housing, at least in the region of the plunger unit, advantageously and further configured such that it has a cup shape or bow shape and / or radially surrounds the (further advantageously radially widened in this area) shaft portion in the outer region. An air gap to the tappet unit can, for example, and preferably be done by the housing section for passing the (elongated) ram unit offers a suitable, adapted to an outer diameter of the ram unit breakthrough and so the inventive, displaced permanent magnet flux not only act as a flux circuit for the energization state of the coil unit can, but in addition and advantageously by the housing portion, in particular a front-side housing portion, a stop for an extended state of the anchor unit can be created; Also in this extended stop state of the anchor unit so that closing the permanent magnetic circuit according to the invention on the housing section, the portion of the plunger unit and possibly an additional, axially remote from the plunger unit (based on the permanent magnet means) Flußleitabschnitt the armature unit, so that even with again de-energized Coil unit in this extended stop state, a stable stop position can be achieved, as far as a bistable switching behavior of the device can be achieved.
In konstruktiv besonders einfacher und für eine automatisierte Herstellbarkeit günstiger Weise sind die etwa als hohlzylindrische Buchse realisierten Buch- senmittel, hergestellt aus Stahl 1 .4301 in den Kernabschnitt eingepresst, so dass sich nicht nur eine mechanisch stabile und unlösbare Verbindung ergibt, sondern auch ein Abschnitt der Buchse aus dem Kernbereich heraus- bzw. hervorragt, mit der Möglichkeit, dass die Buchse dann nicht nur innenseitig durch die Ankereinheit, sondern auch an diesem herausragenden Abschnitt außensei- tig von der Ankereinheit umschlossen sein kann. Dies ermöglicht wiederum in konstruktiv eleganter Weise die Realisierung des erfinderischen Prinzips einer Führung des permanentmagnetischen Flusses der Permanentmagnetmittel um die Buchse (genauer: die Buchsenwand) herum, im unbestromten Zustand der Spuleneinheit. In structurally particularly simple and favorable for automated manufacturability, the bushing means made of a steel sleeve 1 .4301, for example, are pressed into the core section, so that not only a mechanically stable and non-detachable connection results, but also a section the socket out of the core region and protrudes, with the possibility that the socket can then be surrounded on the outside not only on the inside by the anchor unit, but also on this protruding portion of the anchor unit. This in turn makes it possible in a structurally elegant manner to realize the inventive principle of guiding the permanent magnetic flux of the permanent magnet means around the bushing (more precisely, the bushing wall) around, in the currentless state of the coil unit.
Im Ergebnis ermöglicht es die vorliegende Erfindung in überraschend einfacher und eleganter Weise, eine gattungsbildende elektromagnetische Stellvorrichtung im Hinblick auf einen verringerten Durchmesser im Kernbereich und verbesserte Dynamik- bzw. Beschleunigungseigenschaften weiterzuentwickeln, so dass insbesondere in einem besonders bevorzugten Anwendungsgebiet der vorliegenden Erfindung, nämlich der Steuerung von Funktionalitäten eines Verbrennungsmotors, hier neue und zusätzlich vorteilhafte Einsatzmöglichkeiten eröffnet sind. Gleichwohl ist die vorliegende Erfindung nicht auf das Anwendungsgebiet „Motortechnologie" beschränkt, vielmehr eignet sich die erfindungsgemäße Vorrichtung für jeglichen Einsatzfall, bei welchem eine einfach herstellbare, gleichzeitig leistungsfähige elektromagnetische Stelltechnologie mit vorteilhaften Flussführungseigenschaften kombiniert werden soll. As a result, in a surprisingly simple and elegant manner, the present invention makes it possible to further develop a generic electromagnetic actuator with a reduced diameter in the core region and improved dynamic or acceleration properties, so that in a particularly preferred field of application of the present invention, namely the controller of functionalities of a Internal combustion engine, here new and additionally advantageous applications are opened. However, the present invention is not limited to the field of application "engine technology", but rather the device according to the invention is suitable for any application in which a simple to produce, simultaneously powerful electromagnetic actuator technology is to be combined with advantageous flow control properties.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie an- hand der Zeichnungen; diese zeigen in Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and with reference to the drawings; these show in
Fig. 1 : eine schematische Längsschnittansicht durch die elektromagnetische Fig. 1: a schematic longitudinal sectional view through the electromagnetic
Stellvorrichtung gemäß einer ersten Ausführungsform der Erfindung in einem unbestromten Betriebszustand der Spuleneinheit;  Adjusting device according to a first embodiment of the invention in a de-energized operating state of the coil unit;
Fig. 2: eine Darstellung analog Fig. 1 zu einem Zeitpunkt, bei welchem eine Fig. 2: a representation analogous to FIG. 1 at a time at which a
Bestromung der Spuleneinheit aktiviert wird, sich die Ankereinheit jedoch noch im ausgangsseitigen Anschlagzustand befindet, und Fig. 3: eine Darstellung der Stellvorrichtung analog Fig. 1 , Fig. 2 im Bestro- mungszustand der Spuleneinheit zeitlich nach dem Zustand der Fig. 2 mit in eine herausgeschobene bzw. ausgefahrene Position der Stößeleinheit bewegter Ankereinheit, angeschlagen an einer gegenüberliegenden Gehäuse-Anschlagsposition.  Energization of the coil unit is activated, however, the armature unit is still in the exit-side stop state, and FIG. 3 is a representation of the adjusting device analogous to FIG. 1, FIG. 2 in the energization state of the coil unit in terms of time after the state of FIG pushed out or extended position of the plunger unit moving armature unit, hinged to an opposite housing stop position.
Die Fig. 1 bis 3 zeigen in der schematischen Längsschnittansicht die erfindungsgemäße elektromagnetische Stellvorrichtung in einer bevorzugten Ausführungsform der Erfindung, Bezugszeichen gelten für alle Darstellungen. Insoweit entsprechend der gattungsbildenden Technologie der DE 20 2009 010 495 besteht die radialsymmetrisch aufgebaute Vorrichtung aus einer stationä- ren (d.h. montierten und selbst unbeweglichen) Kerneinheit 10, welche endsei- tig einen Bodenabschnitt 12 ausbildet und von einer auf einem (nicht gezeigten) Spulenträger gehaltenen Spuleneinheit 14 mantelseitig umschlossen ist. In die gegenüberliegend des Bodenabschnitts 12 endseitig mittels eines Flanschbereichs 16 aufgeweitete Kerneinheit 10 ist eine Ankereinheit 18 mittels eines Schaftabschnitts 20 eintauchend ausgebildet, wobei der Schaftabschnitt in Richtung auf den Boden 12 eine radiale Erweiterung 22 eines axial verlaufenden Durchbruchs aufweist, in welche Erweiterung eine Spiralfeder 24 einge- setzt ist, welche sich, die Ankereinheit mit ihrer Federkraft vorspannend, vom Bodenelement 12 abstützt. 1 to 3 show in a schematic longitudinal sectional view of the inventive electromagnetic actuator in a preferred embodiment of the invention, reference numerals apply to all representations. In that regard, according to the generic technology of DE 20 2009 010 495, the radially symmetrically constructed device consists of a stationary The core unit 10 (ie assembled and even immovable), which forms a bottom section 12 on the end side and is enclosed on the shell side by a coil unit 14 held on a coil carrier (not shown). An armature unit 18 is formed by means of a shaft section 20 immersed in the core section 10, which is widened at the end of the bottom section 12 by means of a flange section 16, the shaft section having a radial extension 22 of an axially extending opening in the direction of the bottom 12, into which extension a spiral spring 24 is set, which, the armature unit biasing with its spring force, supported by the bottom element 12.
Anderenends weist der Schaftabschnitt 20 der Ankereinheit 18 einen flanschartigen Verbreiterungsabschnitt 26 auf, welchem ein ringförmiger Permanent- magnet 28, axial magnetisiert in einer parallel zur Längserstreckung des Schaftabschnitts 20 verlaufenden Richtung, angesetzt ist, so dass der flanschartige Verbreiterungsabschnitt 26, zusammen mit einem weiteren Flanschabschnitt 30 der Ankereinheit, axial beidseitig des Permanentmagnetrings als Flussleitele- mente wirkt. At the other end, the shaft section 20 of the armature unit 18 has a flange-like widening section 26, to which an annular permanent magnet 28, axially magnetized in a direction parallel to the longitudinal extension of the shaft section 20, is attached, so that the flange-like widening section 26, together with a further flange section 30 of the armature unit, axially acting on both sides of the permanent magnet ring as Flußleitele- elements acts.
Eine aus Weicheisen realisierte, langgestreckt-zylindrische Stößeleinheit 31 sitzt magnetisch haftend außen auf dem Flanschabschnitt 26 und durchgreift einen Durchbruch 33 in einem Gehäuse 35 (kann auch direkt in einem Führungsroh sitzen). An implemented from soft iron, elongated-cylindrical ram unit 31 is magnetically adhering to the outside on the flange portion 26 and passes through an opening 33 in a housing 35 (can also sit directly in a Führungsroh).
Mantelseitig des Schaftabschnitts 20 ist in die Kerneinheit 10 eine hohlzylindrische Buchse 32 aus Stahl 1 .4301 so eingepresst, dass innenseitig der Buchse diese ganzflächig auf einem Mantelabschnitt des Schaftabschnitts 20 - gleitend - aufsitzt, im Außenbereich der Buchse 32 ein axialer Längsabschnitt durch einen Presssitz mit dem Material der Kerneinheit 10 gebildet wird und ein weiterer axialer Längsabschnitt der Buchse, axial benachbart, von der Ankereinheit, konkret dem Flussleitabschnitt, der Permanentmagneteinheit 28 und dem Abschnitt 26, übergriffen wird. On the shell side of the shaft portion 20, a hollow cylindrical bushing 32 of steel 1 .4301 is pressed into the core unit 10, that the inside of the socket this over the entire surface on a shell portion of the shaft portion 20 - slidably - seated in the outer region of the sleeve 32, an axial longitudinal section by a press fit the material of the core unit 10 is formed and a further axial longitudinal section of the bush, axially adjacent, of the anchor unit, specifically, the flux guide portion, the permanent magnet unit 28 and the portion 26, is overlapped.
Dies führt dann dazu, dass, verdeutlicht durch die Pfeilschaar 40 in Fig. 1 , in einem unbestromten Zustand der Spuleneinheit 14 ein Permanentmagnetfluss der Permanentmagnetmittel 28 durch die Flussleitscheibe 30, die Kerneinheit 10, den langgestreckten Schaftabschnitt 20 im Inneren der Buchse und den Flussleitabschnitt 26 als Flusskreis geschlossen ist, welcher an der Luftspalt- und Anker-/Stator-Übergangsstelle (10 auf 30) eine starke permanentmagneti- sehe Haftung bewirkt. This then leads, as illustrated by the arrow 40 in Fig. 1, in a de-energized state of the coil unit 14, a permanent magnet flux of the permanent magnet means 28 through the flux guide 30, the core unit 10, the elongate shaft portion 20 in the interior of the sleeve and the Flußleitabschnitt 26th is closed as a flow circuit, which causes a strong permanentmagneti- see liability at the air gap and armature / stator transition point (10 to 30).
Die Vorrichtung ist dabei so bemessen und eingerichtet, dass die permanentmagnetische Haftkraft in diesem Betriebszustand höher ist als eine auf die Ankereinheit wirkende Druckkraft der Spiralfeder 24. The device is dimensioned and set up in such a way that the permanent-magnetic adhesive force in this operating state is higher than a compressive force of the coil spring 24 acting on the armature unit.
Die Fig. 2 zeigt den Bestromungszustand der Spuleneinheit, unmittelbar nach dem Aktivieren der Bestromung. Die Pfeilschaar 42 verdeutlicht das elektromagnetisch erzeugte Spulenmagnetfeld (wiederum ist zur Vereinfachung lediglich eine Seite der radialsymmetrischen Vorrichtung mit Pfeilen versehen), wo- bei die Pfeile 42 den permanentmagnetischen Fluss 40' aus der Kerneinheit 10 heraus verdrängen, in einen permanentmagnetischen Flusskreis, welcher nunmehr gebildet ist von dem Flussleitelement 30, einem radial umschließenden, becherförmigen Gehäuseabschnitt 50 des Gehäuses 35, in einen daran ansitzenden Gehäusedeckelabschnitt 52, hinein in einen permanentmagnetseitigen Stößelendabschnitt 54 der Stößeleinheit 31 , und über den Flussleitabschnitt 26 bis hin zum axial magnetisierten Permanentmagnetring 28. 2 shows the Bestromungszustand the coil unit, immediately after activating the energization. The arrow 42 illustrates the electromagnetically generated coil magnetic field (again, for simplicity, only one side of the radially symmetrical device is provided with arrows), wherein the arrows 42 displace the permanent magnetic flux 40 'out of the core unit 10 into a permanent magnetic flux circuit, which is now formed is from the flux guide 30, a radially enclosing, cup-shaped housing portion 50 of the housing 35, in a sitting thereon Gehäusedeckelabschnitt 52, into a permanent magnet side ram end portion 54 of the plunger unit 31, and over the Flußleitabschnitt 26 up to the axially magnetized permanent magnet ring 28th
Zu diesem Betriebszustand wirkt damit dann der Elektromagnetfluss 42 nicht nur abstoßend auf die Ankereinheit, auch wird durch die Flussverdrängung die permanentmagnetische Haftung der Ankereinheit an der Kerneinheit überwunden, und zusätzlich beschleunigend wirkt nunmehr die Druckfeder 24 auf die Ankereinheit, um die Stößeleinheit aus dem Gehäuse 35 herauszutreiben (Bewegungsrichtung abwärts in der Zeichnungsebene der Fig. 1 bis 3). In this operating state, the electromagnetic flux 42 then acts not only repulsively on the armature unit, but also the flux-displacement overcomes the permanent-magnetic adhesion of the armature unit to the core unit, and in addition acceleratingly, the compression spring 24 now acts on the armature unit Anchor unit to drive the ram unit out of the housing 35 (direction of movement downwards in the plane of the drawing of FIGS. 1 to 3).
Den Endzustand dieser Antriebsbewegung zeigt die Fig. 3, bei nach wie vor bestromter Spuleneinheit und teilweise entspannter Spiralfeder 24: Der Gehäuseabschnitt 52 bildet innenseitig den Anschlag für die Ankereinheit 18, welche mit dem Flussleitabschnitt 26 an das geeignet magnetisch leitende, z.B. weichmagnetische Material anschlägt. Wie zudem die Pfeilschaar 40" verdeutlicht, wird in diesem ausgefahrenen Zustand der Stößeleinheit die Ankereinheit - bistabil - gehalten durch einen permanentmagnetischen Flusskreis, welcher sich durch die Ankeranordnung aus Flussleitelement 30, Permanentmagnetring 28, Flussleitelement 26, über das Flussleitende 54 der Stößeleinheit 35 und die Gehäuseabschnitte 52, 50 schließend erstreckt. Beim typischen Anwendungsfall Nockenwellenverstellung würde dann ein geeignet an dem Ende 54 entge- gengesetzt angreifender Stellpartner des Stößelelements die Ankereinheit wieder zurück in ihre Ausgangslage (Fig. 1 ) verbringen können. The final state of this drive movement is shown in Fig. 3, with still energized coil unit and partially relaxed coil spring 24: The housing portion 52 forms on the inside the stop for the armature unit 18, which with the Flußleitabschnitt 26 to the suitably magnetically conductive, e.g. soft magnetic material strikes. In addition, as the arrow 40 'illustrates, in this extended state of the ram unit, the armature unit - bistable - held by a permanent magnetic circuit, which by the armature assembly of flux guide 30, permanent magnet ring 28, flux guide 26, via the flux conducting 54 of the plunger unit 35 and the In the case of the typical application of adjusting the camshaft, a setting partner of the tappet element that acts suitably on the end 54 would then be able to return the armature unit back into its initial position (FIG.
Die vorliegende Erfindung ist nicht auf das gezeigte Ausführungsbeispiel beschränkt; vielmehr sind zahlreiche weitere Varianten und Ausgestaltungen für jeweilige Anwendungsfälle denkbar, bei welchen erfindungsgemäß die permanentmagnetische Flussumleitung bzw. -Verdrängung zur Erhöhung des Dynamikverhaltens erfolgen kann. The present invention is not limited to the embodiment shown; Rather, numerous other variants and configurations for respective applications are conceivable, in which according to the invention, the permanent magnetic flow diversion or displacement can be done to increase the dynamic behavior.

Claims

Elektromagnetische Stellvorrichtung mit einer als Reaktion auf eine Bestromung einer stationären Spuleneinheit (14) relativ zu einer stationären Kerneinheit (10) antreibbaren Ankereinheit (18), die Permanentmagnetmittel (28) sowie eine zum Zusammenwirken mit einem Stellpartner ausgebildete, aus einem magnetisch flussleitenden Gehäuse (35) herausgeführte Stößeleinheit (31 ) aufweist, Electromagnetic actuator having an armature unit (18) drivable in response to energization of a stationary coil unit (14) relative to a stationary core unit (10), said permanent magnet means (28) and a magnetically flux conducting housing (35) formed to cooperate with an actuator ) has led out ram unit (31),
dadurch gekennzeichnet, dass characterized in that
mantelseitig eines Schaftabschnitts (20) der Ankereinheit (18) magnetisch nicht leitende Buchsenmittel (32) so vorgesehen sind, dass in einem un- bestromten Zustand der Spuleneinheit (14) ein permanentmagnetischer Fluss (40) der Permanentmagnetmittel (28) durch die Kerneinheit (10) und den Schaftabschnitt (20) zum Halten der Ankereinheit (18) an der Kerneinheit (10) fließt und in einem bestromten Zustand der Spuleneinheit (14) der permanentmagnetische Fluss (40', 40") aus der Kerneinheit (10) in einen Gehäuseabschnitt (50, 52) des Gehäuses verdrängt und ein permanentmagnetischer Flusskreis über einen gehäuseseitigen Abschnitt (54) der Stößeleinheit geschlossen wird. On the shell side of a shaft portion (20) of the armature unit (18) magnetically non-conductive bushing means (32) are provided so that in a de-energized state of the coil unit (14) a permanent magnetic flux (40) of the permanent magnet means (28) by the core unit (10 ) and the shank portion (20) for holding the armature unit (18) on the core unit (10) flows and in a energized state of the coil unit (14) of the permanent magnetic flux (40 ', 40 ") from the core unit (10) in a housing portion (50, 52) of the housing displaced and a permanent magnetic flux circuit via a housing-side portion (54) of the plunger unit is closed.
Vorrichtung nach Anspruch 1 , gekennzeichnet durch Federmittel (24), die zum Ausüben einer die Ankereinheit (18) antreibenden Federkraft an die Ankereinheit (18) angreifen. Apparatus according to claim 1, characterized by spring means (24) for engaging the armature unit (18) to apply a spring force driving the armature unit (18).
Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die als Spiral- und/oder Druckfeder (24) ausgebildeten Federmittel endseitig des Schaftabschnitts (20) vorgesehen und/oder in einem Endabschnitt des Schaftabschnitts (20) aufgenommen sind. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Stößeleinheit (31 ) lösbar an einem bevorzugt flächigen Flansch- und/oder Endabschnitt (26) des Schaftabschnitts (20) vorgesehen ist. Apparatus according to claim 2, characterized in that as a spiral and / or compression spring (24) formed spring means are provided on the end side of the shaft portion (20) and / or in an end portion of the shaft portion (20) are accommodated. Device according to one of claims 1 to 3, characterized in that the plunger unit (31) releasably on a preferably flat flange and / or end portion (26) of the shank portion (20) is provided.
Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Stößeleinheit magnetisch, insbesondere permanentmagnetisch, haftend an dem Schaftabschnitt (20) vorgesehen ist. Device according to one of claims 1 to 4, characterized in that the plunger unit is provided magnetically, in particular permanent magnetic, adhering to the shaft portion (20).
Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Permanentmagnetmittel (28) an einem stoßelseitigen Endbereich des Schaftabschnitts (20) vorgesehen und/oder ring- und/oder scheibenförmig ausgebildet sind. Device according to one of claims 1 to 5, characterized in that the permanent magnet means (28) provided on a push-side end portion of the shaft portion (20) and / or annular and / or disc-shaped.
Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Schaftabschnitt (20) sich stößelseitig radial erweiternd ausgebildet ist und/oder einen bevorzugt radial ausgerichteten Flussleitabschnitt für einen Permanentmagnetfluss der Permanentmagnetmittel (28) anbietet. Device according to one of claims 1 to 6, characterized in that the shaft portion (20) is plunger-side radially widening and / or offers a preferably radially aligned Flußleitabschnitt for a permanent magnet flux of the permanent magnet means (28).
Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Gehäuseabschnitt (50, 52) becherförmig und/oder bügelartig ausgebildet ist und/oder den Schaftabschnitt (20) zumindest abschnittsweise radial umschließt. Device according to one of claims 1 to 7, characterized in that the housing portion (50, 52) is cup-shaped and / or bow-shaped and / or radially surrounds the shaft portion (20) at least in sections.
Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Buchsenmittel (32) unlösbar mit der aus einem weichmagnetischen Material realisierten Kerneinheit (10), insbesondere durch einen Pressvorgang, verbunden sind. Device according to one of claims 1 to 8, characterized in that the bushing means (32) are permanently connected to the realized from a soft magnetic material core unit (10), in particular by a pressing operation.
10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass mantelseitig und/oder radial benachbart der Spuleneinheit (14) kein magnetisches Leitelement vorgesehen ist. 10. Device according to one of claims 1 to 9, characterized in that the shell side and / or radially adjacent to the coil unit (14) no magnetic guide element is provided.
EP13731701.2A 2012-07-26 2013-05-31 Electromagnetic positioning device Active EP2878001B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012106824.0A DE102012106824A1 (en) 2012-07-26 2012-07-26 Electromagnetic actuator
PCT/EP2013/061306 WO2014016023A2 (en) 2012-07-26 2013-05-31 Electromagnetic positioning device

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EP2878001A2 true EP2878001A2 (en) 2015-06-03
EP2878001B1 EP2878001B1 (en) 2016-03-23

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US (1) US9343217B2 (en)
EP (1) EP2878001B1 (en)
CN (1) CN104364858B (en)
DE (1) DE102012106824A1 (en)
WO (1) WO2014016023A2 (en)

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Publication number Priority date Publication date Assignee Title
EP3016117B1 (en) 2014-10-31 2017-12-06 Husco Automotive Holdings LLC Push pin actuator apparatus
JP6311617B2 (en) * 2015-01-19 2018-04-18 株式会社デンソー Electromagnetic actuator
CN110911084B (en) * 2019-12-11 2021-09-24 长沙理工大学 Series-parallel permanent magnet and electromagnetic hybrid excitation high-speed electromagnetic actuator

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US4550302A (en) * 1982-11-09 1985-10-29 Matsushita Electric Industrial Co., Ltd. Solenoid
US6639496B1 (en) * 2001-04-25 2003-10-28 Van Namen Frederik T. Bistable long-stroke electro-magnetic mechanical actuator
US7382067B2 (en) * 2001-12-03 2008-06-03 Shinko Electric Co., Ltd. Linear actuator
DE102006024841B4 (en) * 2006-05-24 2012-04-05 Eto Magnetic Gmbh Electromagnetic actuator
DE102007037232A1 (en) * 2007-08-07 2009-02-12 Eto Magnetic Gmbh Device for adjusting the camshaft of an internal combustion engine
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FR2934923B1 (en) * 2008-08-11 2013-05-31 Schneider Electric Ind Sas HYBRID ELECTROMAGNETIC ACTUATOR WITH FIXED COIL
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CN104364858B (en) 2017-04-12
CN104364858A (en) 2015-02-18
WO2014016023A2 (en) 2014-01-30
EP2878001B1 (en) 2016-03-23
US9343217B2 (en) 2016-05-17
US20150213937A1 (en) 2015-07-30
WO2014016023A3 (en) 2014-04-17
DE102012106824A1 (en) 2014-01-30

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