EP3014635B1 - Actionneur électromagnétique - Google Patents

Actionneur électromagnétique Download PDF

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Publication number
EP3014635B1
EP3014635B1 EP14733993.1A EP14733993A EP3014635B1 EP 3014635 B1 EP3014635 B1 EP 3014635B1 EP 14733993 A EP14733993 A EP 14733993A EP 3014635 B1 EP3014635 B1 EP 3014635B1
Authority
EP
European Patent Office
Prior art keywords
armature
pole core
pole
combination according
ferromagnetic
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
Application number
EP14733993.1A
Other languages
German (de)
English (en)
Other versions
EP3014635A1 (fr
Inventor
Andreas Bereschka
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.)
Hydac Electronic GmbH
Original Assignee
Hydac Electronic 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 Hydac Electronic GmbH filed Critical Hydac Electronic GmbH
Publication of EP3014635A1 publication Critical patent/EP3014635A1/fr
Application granted granted Critical
Publication of EP3014635B1 publication Critical patent/EP3014635B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—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
    • H01F7/13—Electromagnets; Actuators including electromagnets with armatures characterised by pulling-force characteristics
    • 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
    • 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
    • H01F2007/085—Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1661—Electromagnets or actuators with anti-stick disc

Definitions

  • the invention relates to an electromagnetic actuating device, in particular a proportional magnet or switching magnet, with a magnet armature which is guided so that it can move axially in a pole tube which is at least partially surrounded by a coil winding and to which a pole core is connected via a separating region which forms a magnetic decoupling, with the coil winding being energized a magnetic force acts on the armature, which seeks to move it towards the pole core within a cubic capacity.
  • a proportional magnet or switching magnet with a magnet armature which is guided so that it can move axially in a pole tube which is at least partially surrounded by a coil winding and to which a pole core is connected via a separating region which forms a magnetic decoupling, with the coil winding being energized a magnetic force acts on the armature, which seeks to move it towards the pole core within a cubic capacity.
  • Such electromagnetic actuating devices which are also referred to in the technical jargon as proportional magnets or switching magnets, are freely available on the market in a large number of embodiments.
  • a particular intended for valve actuation actuator of this type is for example in DE 10 2008 061 414 A1 described.
  • the magnet armature performs a lifting movement in the pole tube when the associated coil winding is electrically excited. If the coil winding is not energized, the magnet armature is regularly reset to an initial position via a restoring force.
  • the restoring force acts on the magnet armature via an actuating part connected to the armature, which is for example rod-like and extends through the pole core and triggers a relevant actuating process, for example in the case of an externally connected valve for controlling fluid flows.
  • actuating part connected to the armature
  • a relevant actuating process for example in the case of an externally connected valve for controlling fluid flows.
  • a special, specific response is the operating device required.
  • a specific course of the magnetic force-stroke characteristic is required for the switching or control functions in question.
  • this Fs characteristic is in particular determining the geometry of the pole tube in the transition area between the magnetic separation area and the pole core.
  • the EP 1 953 773 A2 describes an electromagnetic actuating device, in particular a proportional magnet or a switching magnet, with a magnet armature which is guided so that it can move axially in a pole tube which is at least partially surrounded by a coil winding and to which a pole core is connected via a separating region which forms a magnetic decoupling, with the coil winding being energized a magnetic force acts on the armature, which seeks to move it within a cubic capacity in the direction of the pole core, with a pole disc being introduced on the armature side between the permanent magnets of the armature and the pole core, with the part of the cubic capacity adjoining the separating area of the pole tube being covered by a recess is formed in the pole core, which continues the guidance of the armature formed by the pole tube and ends at the separating area in a rim forming an edge.
  • the pole disc is fixed in the form of a ring disc on a lifting rod.
  • DE3734037 C1 discloses an electromagnetic actuator.
  • a ferromagnetic washer being interposed between the armature and the pole core, this washer being fixedly attached to a lifting rod.
  • the armature moves on the one hand relative to the lifting rod between the annular disc and a stop, on the other hand with the annular disc and the lifting rod lifting away more or less strongly against a restoring spring from a valve seat.
  • the object of the invention is to provide an electromagnetic actuating device which offers more universal application possibilities and therefore enables rational production.
  • this object is achieved by a combination of an electromagnetic actuating device and ferromagnetic annular disks of different axial thickness, which has the features of patent claim 1 in its entirety.
  • an essential feature of the invention is that the combination is provided with inserts in the form of ring disks of different axial thicknesses and that one of the inserts is applied to the bottom surface of the depression of the pole core.
  • At least one insert made of ferromagnetic material of predetermined axial thickness is introduced between the armature and the pole core for a desired shortening of the axial length of the section of displacement located between the magnetic separation area on the pole tube and the pole core.
  • the liner is secured to the bottom surface of the recess.
  • the arrangement can be such that the armature has a rod-like actuating part and that a ferromagnetic annular disk of selected thickness surrounding the actuating part is provided as an insert.
  • an anti-adhesive disk can be arranged in a manner known per se between the ferromagnetic annular disk and the armature.
  • the ferromagnetic ring disk can be fixed to the pole core by gluing or soldering or by material deformation, for example by caulking at the outer edge, or by caulking in an annular groove formed in the bottom surface of the pole core.
  • the ferromagnetic ring disk can be fixed by means of a sleeve that encloses its peripheral edge and is fixed on the outside on an inner surface of the pole tube or pole core.
  • the ferromagnetic annular disk can be fixed by means of a weld formed between its peripheral edge and the surface of the pole core.
  • the arrangement can be such that the ferromagnetic ring disk has a coaxial, sleeve-like extension on the side facing away from the armature Press fit is secured in a bore of the pole core, which is penetrated by the rod-like operating part of the armature.
  • an associated coil winding is omitted, which is arranged in a manner known per se on the pole tube designated 2 and can be energized for actuation processes.
  • a magnet armature 4 is guided in an axially movable manner in the pole tube 2 and a coaxial, rod-like actuating part 6 is fastened to one end of the magnet armature. This extends through a through-bore 8 in a pole core 10, so that the free end 12 of the actuating part 6 is accessible for an actuating process at an end connection part 14 of the pole core 10.
  • a device to be actuated, connected to the connection part 14, for example in the form of a valve, is in 1 Not shown.
  • This in 1 is designed as a so-called "pushing magnet", with the axial position shown corresponding to the fully energized state of excitation of the coil winding (not shown) and the armature 4 generating a compressive force as an actuating force via the actuating part 6 .
  • an end body 18 fixed.
  • the pole tube 2 is connected to the pole core 10 via a weld 20 which, in a manner known per se, forms a separating region which causes magnetic decoupling.
  • the guide formed on the inside of the pole tube 2 for the armature 4 continues beyond the separating region formed by the weld 20 in a depression 22 which is circular-cylindrical in the pole core 10 and has a bottom surface 24 lying in a radial plane.
  • the depression 22 ends in an edge 26, which forms a tapered edge surrounding the guide surface of the armature 4.
  • a ferromagnetic annular disk 28 made of a ferritic material is inserted on the bottom surface 24 in the recess 22 of the pole core 10, through which the rod-like actuating part 6 passes.
  • An anti-adhesive disk 30 of the usual type is arranged between the annular disk 28 and the end of the armature 4 .
  • the annular disk 28 shown in the inserted state has a relatively small axial thickness.
  • the 1 shows an example of a selection of inserted washers 28 of different axial thickness.
  • the thickness of the annular disk 28 inserted in each case leads to a corresponding shortening of the axial length of the cubic capacity which is available for the armature 4 when moving in the direction of the pole core 10 .
  • the modification of the cubic capacity in the critical lifting path area, which adjoins the magnetic separation area of the weld 20, influences the magnetic force-lifting path characteristic, as in the examples in FIGS 2 and 3 is shown.
  • the stroke length of the return stroke is also determined by the selection of the dimensions of the end body 18 in question.
  • FIGs 4 to 9 show further exemplary embodiments with a selection of possible types of installation of an annular disk 28.
  • the example in FIG 4 the attachment of the annular disc 28 to the bottom surface 24 of the pole core 10 is provided by gluing or brazing.
  • a connection is provided by means of mechanical deformation by an external caulking of the annular disc 28 at 36 against the inner wall of the recess 22.
  • 6 shows the fixing of the annular disk 28 by means of a sleeve 38, which forms the guide surface for the armature 4 on the inside of the pole tube 2 and the recess 22.
  • a welded geometry 40 formed on the ring disk 28 is provided as a connecting means, while in the example of FIG 8 mechanical deformation is again provided in that the annular disk 28 is caulked into an annular groove 42 machined into the bottom surface 24 .
  • a specially shaped washer 28 has a coaxial, sleeve-like extension 44 on the side facing away from the armature 4, which is secured in the bore 8 of the pole core 10 by a press fit.
  • the 10 shows an embodiment in which the invention is implemented in a so-called compact magnet.
  • the pole core 10 is shorter in relation to its diameter and has a flange-like, radial expansion 48 at the end having the connection part 14 .
  • the end body 18 forms the closed bottom of a pot-like housing 50, which extends to the extension 48 of the pole core 10, which closes the open end of the pot.
  • the housing 50 surrounds the coil winding 52, which in turn surrounds a large part of the pole tube 2 and the pole core 10.
  • the course of the Fs characteristic is equally influenced by the choice of introduced ferromagnetic ring disks 28 .

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Claims (11)

  1. Combinaison d'un dispositif électromagnétique d'actionnement, notamment d'un aimant proportionnel ou d'un aimant d'indexage, et de disques (28) annulaires ferromagnétiques d'épaisseur axiale différente, dans laquelle le dispositif électromagnétique d'actionnement a une armature (4) d'aimant, qui est guidée avec possibilité de se déplacer axialement dans un tube (2) polaire entouré au moins en partie d'un enroulement (52) de bobine du dispositif d'actionnement, tube auquel se raccorde, par une région (20) de séparation formant un découplage magnétique, un noyau (10) polaire du dispositif d'actionnement, dans laquelle, lorsque l'enroulement (52) de bobine est alimenté en courant, agit sur l'armature (4) une force magnétique, qui cherche à la déplacer à l'intérieur d'un espace de course en direction du noyau (10) polaire, dans laquelle, pour un raccourcissement souhaité de la longueur axiale de l'espace de course, au moins un insert (28) en matériau ferromagnétique d'épaisseur axiale donnée à l'avance sous la forme de l'un des disques (28) annulaires ferromagnétiques est introduit entre l'armature (4) et le noyau (10) polaire, dans laquelle chacun des disques (28) annulaires peut être utilisé suivant le raccourcissement souhaité comme insert de ce genre, dans laquelle la partie, se raccordant à la région (20) de séparation du tube (2) polaire, de l'espace de course est formé par un évidement (22) du noyau (10) polaire, qui prolonge le guidage, formé par le tube (2) polaire, de l'armature (4) et se termine à la région (20) de séparation en un bord formant une arête (26) , dans laquelle l'insert sous la forme du disque (28) annulaire est mis sur la surface (24) de fond de l'évidement (22) du noyau (10) polaire.
  2. Combinaison suivant la revendication 1, caractérisée en ce que l'insert (28) est fixé à la surface (24) de fond de l'évidement (22) .
  3. Combinaison suivant la revendication 1 ou 2, caractérisée en ce que l'armature (4) a une partie (6) d'actionnement de type en barre et l'insert sous la forme du disque (28) annulaire entoure la partie (6) d'actionnement.
  4. Combinaison suivant la revendication 3, caractérisée en ce qu'un disque (30) anti-collant est disposé entre le disque (28) annulaire ferromagnétique et l'armature (4).
  5. Combinaison suivant l'une des revendications précédentes, caractérisée en ce que du côté, loin du noyau (10) polaire, du tube (2) polaire est mis un corps (18) d'extrémité, qui forme pour l'armature (4) une limitation du trajet de la course.
  6. Combinaison suivant l'une des revendications 3 à 5, caractérisée en ce que le disque (28) annulaire ferromagnétique est fixé au noyau (10) polaire par collage ou par brasure.
  7. Combinaison suivant l'une des revendications 3 à 6, caractérisée en ce que le disque (28) annulaire ferromagnétique est fixé au disque (10) polaire par matage (36, 42).
  8. Combinaison suivant l'une des revendications 3 à 7, caractérisée en ce que le disque (28) annulaire ferromagnétique est fixé au moyen d'un manchon (38), qui borde son bord périphérique et qui est fixé du côté extérieur à une surface intérieure du tube (2) polaire et du noyau (10) polaire.
  9. Combinaison suivant l'une des revendications 3 à 8, caractérisée en ce que le disque (28) annulaire ferromagnétique est fixé au moyen d'un endroit (40) de soudure formé entre le bord périphérique et la surface (24) de fond du noyau (10) polaire.
  10. Combinaison suivant la revendication 3 ou l'une des revendications 4 à 9, pour autant qu'elles dépendent de la revendication 3, caractérisée en ce que le disque (28) annulaire ferromagnétique possède du côté, loin de l'armature (4), un prolongement (44) coaxial de type en manchon, qui est fixé par ajustage serré dans un alésage (8) du noyau (10) polaire, alésage dans lequel passe la partie (6) d'actionnement de type en barre de l'armature (4).
  11. Utilisation de la combinaison suivant l'une des revendications précédentes, caractérisée en ce que l'on met l'un des disques annulaires comme insert sur la surface (24) de fond de l'évidement (22) du noyau (10) polaire pour régler à une longueur souhaitée la distance axiale entre l'insert ferromagnétique et le bord, agissant en arête magnétique de commande, du noyau polaire, dans laquelle il y a une courbe souhaitée de la courbe caractéristique force magnétique - trajet de course.
EP14733993.1A 2013-06-28 2014-06-14 Actionneur électromagnétique Not-in-force EP3014635B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013010833.0A DE102013010833A1 (de) 2013-06-28 2013-06-28 Elektromagnetische Betätigungsvorrichtung
PCT/EP2014/001618 WO2014206537A1 (fr) 2013-06-28 2014-06-14 Dispositif de commande électromagnétique

Publications (2)

Publication Number Publication Date
EP3014635A1 EP3014635A1 (fr) 2016-05-04
EP3014635B1 true EP3014635B1 (fr) 2022-04-27

Family

ID=51033112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14733993.1A Not-in-force EP3014635B1 (fr) 2013-06-28 2014-06-14 Actionneur électromagnétique

Country Status (4)

Country Link
US (1) US9941042B2 (fr)
EP (1) EP3014635B1 (fr)
DE (1) DE102013010833A1 (fr)
WO (1) WO2014206537A1 (fr)

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DE102013114830A1 (de) * 2013-12-23 2015-06-25 Eto Magnetic Gmbh Elektromagnetische Stellvorrichtung
DE102016106805A1 (de) * 2016-04-13 2017-10-19 Eto Magnetic Gmbh Stromlos monostabile elektromagnetische Stellvorrichtung und Verwendung einer solchen
DE102016210091A1 (de) * 2016-06-08 2017-12-14 Festo Ag & Co. Kg Elektromagnetische Betätigungseinrichtung mit Ankerführungsanordnung
DE102018217424A1 (de) * 2018-10-11 2020-04-16 Robert Bosch Gmbh Elektromagnetische Betätigungseinrichtung
DE102021001385A1 (de) 2021-03-16 2022-09-22 Hydac Fluidtechnik Gmbh Betätigungsmagnet
CN114562398B (zh) * 2022-03-09 2022-10-28 哈尔滨工程大学 一种高动态响应低反弹的永磁-电磁协同耦合高速电磁阀
IT202200018162A1 (it) 2022-09-06 2024-03-06 Tecfluid S R L Attuatore elettromagnetico e metodo per produrre un attuatore elettromagnetico

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EP2254130A2 (fr) * 2009-05-19 2010-11-24 Robert Bosch GmbH Plaque d'écartement pour l'air résiduel

Also Published As

Publication number Publication date
EP3014635A1 (fr) 2016-05-04
US9941042B2 (en) 2018-04-10
DE102013010833A1 (de) 2014-12-31
WO2014206537A1 (fr) 2014-12-31
US20160118174A1 (en) 2016-04-28

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