EP1915763B1 - Electromagnetic actuator comprising a magnetic tube and used for actuating a hydraulic or pneumatic valve - Google Patents

Electromagnetic actuator comprising a magnetic tube and used for actuating a hydraulic or pneumatic valve Download PDF

Info

Publication number
EP1915763B1
EP1915763B1 EP06794268.0A EP06794268A EP1915763B1 EP 1915763 B1 EP1915763 B1 EP 1915763B1 EP 06794268 A EP06794268 A EP 06794268A EP 1915763 B1 EP1915763 B1 EP 1915763B1
Authority
EP
European Patent Office
Prior art keywords
magnetic
electromagnetic actuator
pole
tubular part
magnetic core
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.)
Expired - Fee Related
Application number
EP06794268.0A
Other languages
German (de)
French (fr)
Other versions
EP1915763A1 (en
Inventor
Aimé Goubely
Pascal Gantelme
Luca Cassini
Gillian Escandell
Eric Passolunghi
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.)
BorgWarner Inc
Original Assignee
BorgWarner Inc
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 BorgWarner Inc filed Critical BorgWarner Inc
Publication of EP1915763A1 publication Critical patent/EP1915763A1/en
Application granted granted Critical
Publication of EP1915763B1 publication Critical patent/EP1915763B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • H01F7/081—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
    • H01F7/1607—Armatures entering the winding
    • H01F2007/163—Armatures entering the winding with axial bearing

Definitions

  • the present invention relates to the general technical field of electromagnets, and more particularly to the technical field of electromagnetic actuators. These are for example used to actuate hydraulic or pneumatic valves.
  • Electromagnetic actuators having an electric coil mounted in a magnetic yoke having a first pole portion and a second pole portion, integral with the yoke, which each extend adjacent a side of a free space in which moves a magnetic core movable in translation under the effect of the power supply of the electric coil and the appearance of a different magnetic polarity to the polar parts.
  • electromagnets used in electromagnetic actuators which comprise a discontinuous magnetic circuit
  • the electrical coils housed in this magnetic circuit generate a magnetic flux in a core when a current flows through them.
  • the magnetic nuclei then serve to channel the magnetic flux that forms a north / south magnetic loop.
  • the mobile core is then driven to the position which will promote optimal circulation of this magnetic flux.
  • Electromagnetic actuators are used in which the magnetic core is positioned asymmetrically, meaning that said core is not in a position where the magnetic fluxes have a symmetrical configuration.
  • the stable position in which the configuration of the magnetic flux is symmetrical corresponds to the position in which the magnetic core will be placed under the effect of the magnetic field. The appearance of the magnetic field will therefore result in moving the magnetic core and provide an actuating force.
  • the object of the present invention is to optimize the performance of an electromagnetic actuator while reducing the costs associated with the construction of said actuator, as well as the manufacture of its component parts. It is therefore sought to simplify the electromagnetic actuator without impairing its performance.
  • Another object of the present invention is to provide a seal between the electrical part and the hydraulic part of an electromagnetic actuator with simple and inexpensive means.
  • the electromagnetic actuator comprises the features of claim 1. Contrary to popular belief, it is possible to optimize, or even improve, the performance of an electromagnetic actuator putting the two polar parts in short circuit magnet for guiding the displacement of the movable core and reducing the radial air gap between said core and the polar portion (s) to the minimum functional clearance necessary for the relative movement of said parts.
  • the magnetic junction between the two polar parts is therefore not a disadvantage, according to the present invention.
  • the tubular portion has on the side of a polar part a bottom forming a stop for the magnetic core.
  • the tubular portion is shaped and / or positioned to provide a seal between the free space and the electrical part, including the electric coil. It is therefore possible to remove any specific part or sealing device. In addition, it leads to a simplified construction of the actuator according to the invention.
  • the tubular portion constituting a magnetic continuity between the two polar parts has at least locally a thin wall, chosen to minimize leakage of magnetic flux between the polar parts.
  • the magnetic short circuit is controlled by the choice of dimensions of the cross section of the tubular part.
  • the absence of specific guiding and sealing parts also makes it possible to increase the section of the mobile core, thus improving the performance of the actuator according to the invention. Such remarkable performance could not be achieved with known electromagnetic actuators. It is therefore possible to envisage, in the context of the present invention, to reduce the bulk, in particular of the electric coil, while preserving the performance of a known electromagnetic actuator.
  • the tubular portion has a wall of constant thickness and low, for example less than a few tenths of millimeters.
  • the tubular portion has a reduced cross section over a portion of its length.
  • the tubular part is at least partially constitutive of the second part polar, whose connecting end having the reduced cross section is integral with the first polar portion.
  • the tubular portion is at least partly constitutive of the two polar parts, which are separated by the portion having the reduced cross section.
  • the tubular portion is reported for example on the magnetic yoke.
  • the tubular part can also be attached to the first polar part and the cylinder head.
  • the tubular part is attached to the two polar parts, for example by welding, fitting or gluing.
  • the electromagnetic actuator according to the invention also has the advantage of a mechanical construction in which the parts and the intermediate linkage mechanical elements are best removed, thereby reducing the lack of displacement or alignment between the elements. rooms. This is particularly interesting when it is necessary to align for example two tree bearings. This alignment will be all the better that the bearings will be machined simultaneously in the same room for example constitutive of the two polar parts rather than in separate parts and assembled together.
  • the present invention also relates or relates to a hydraulic or pneumatic valve comprising an electromagnetic actuator as presented above.
  • the electromagnetic actuator according to the invention comprises an electric coil (1) mounted in a magnetic yoke (2).
  • the electromagnetic actuator presents a first part polar (3) and a second polar portion (4) integral with the yoke (2).
  • the pole portions (3) and (4) each advantageously extend in the vicinity of one side of a free space (5) in which a magnetic core (6) moves. The latter is movable in translation under the effect of the power supply of the coil (1) and the appearance of a magnetic polarity different from the polar parts (3) and (4).
  • the electromagnetic actuator according to the invention also comprises a tubular part (7) of magnetic material.
  • the tubular portion (7) delimits the free space (5) at least in part and surrounds the magnetic core (6), which for example has a circular cross section.
  • the tubular portion (7) guides the displacement of the magnetic core (6).
  • the tubular portion (7) has a magnetic continuity with the polar portion (s) (3) and (4) for minimizing the radial gap between the magnetic core (6) and the or magnetic polar portions (3) and (4) by eliminating any misalignment between them.
  • a non-magnetic intermediate portion providing a guide interface between the magnetic pole portions (3) and (4) and the magnetic core (6).
  • the tubular part (7) advantageously made of the same magnetic material as the polar parts (3) and (4), thus makes it possible to form only one part thus dispensing with having to create connection means and indispensable sealing when the elements are made of different materials.
  • the magnetic core (6) has circumferential grooves (6a) in which rings or guide shoes (6b) are accommodated which promote the displacement and alignment of said magnetic core (6) in the tubular part (7).
  • the electromagnetic actuator figures 1 and 3 also comprises a pusher (8) passing through the axial air gap located in the free space (5) between an axial end of the magnetic core (6), and an axial end vis-à-vis the second polar part (4) or a magnetic continuity-related portion with the second polar portion (4).
  • the gap corresponds to a portion of the free space (5) that can be seen in the figures.
  • the tubular portion (7) has a bottom (7a) forming a stop for the magnetic core (6).
  • the tubular portion (7) is shaped and / or positioned to seal between the free space (5) and the electrical part of the actuator electromagnetic, including in particular the electric coil (1).
  • the tubular portion (7) constitutes a magnetic continuity between the two pole portions (3) and (4) and has at least locally a thin wall chosen to minimize magnetic flux leakage. It is thus possible to minimize the effect called magnetic "short-circuit" between the two polar parts (3) and (4).
  • the tubular portion (7) has a wall of constant and low thickness, for example less than a few tenths of a millimeter.
  • the thickness of the tubular part (7) is between 35/100 and 55/100 of a millimeter.
  • the tubular portion (7) has a reduced cross-section (7b) over a portion of its length.
  • reduced cross-section it is understood to mean a smaller thickness, taken in a cross section.
  • the tubular portion (7) is constitutive of the second pole portion (4) having a connecting end (7c) has the reduced cross section (7b). This connecting end is further secured to the first polar portion (3).
  • the magnetic core (6) is mounted in the tubular portion (7) and a spring (10) participating in maintaining the core in position.
  • the displacement of the magnetic core (6) also causes the displacement of a rod (11) integral with said magnetic core (6). It is this rod (11) which actuates for example the valve (9) hydraulic or pneumatic.
  • the tubular part (7) is constitutive of the two polar parts (3) and (4), which are separated by a portion having the reduced cross section (7b).
  • the two polar parts (3) and (4) are thus made in one piece constituting the tubular portion (7).
  • the bottom (7a) of the latter also serves to form a stop for the movable core (6).
  • the rod (11) actuating for example a hydraulic or pneumatic valve also passes through a complementary polar part (4a) in magnetic continuity with the second polar part (4).
  • the complementary polar part (4a) advantageously makes it possible to delimit axially the free space (5) and consequently the corresponding axial gap.
  • the tubular part (7) crosses or penetrates the magnetic yoke (2) and can be attached, and if necessary fixed, to the magnetic yoke (2) for example by means of welds, press fitting, crimping or any other means of 'assembly.
  • the tubular part (7) is attached and fixed on the polar part (3) by a weld bead (18).
  • tubular part (7) is attached directly to the magnetic yoke (2).
  • the tubular portion (7) is attached and fixed by any known means and in particular by a weld seam and / or by fitting into the two polar parts (3) and (4). Fixing ends (12) may also be provided.
  • the present invention also relates to valves (9) hydraulic or pneumatic, as represented for example to figures 1 and 3 , and actuated by an electromagnetic actuator according to the invention.
  • These valves (9) have a body in magnetic continuity with the second polar part (4), as shown in FIG. figure 1 , or a constituent body directly from said second polar portion (4), as shown in FIG. figure 3 .
  • the valve (9) has inlet (13) and outlet (14) ports and an elastic return means (15) biasing a closure member (16) actuated by the magnetic core (6).
  • the valves (9) hydraulic or pneumatic known as such are not described in more detail here. They are advantageously associated with seals (17) allowing a tight connection on a conduit not shown.
  • the tubular portion (7) of an electromagnetic actuator according to the invention also has the advantage of improving the precision of guiding and moving the magnetic core (6) relative to the polar parts (3) and (4).

Description

La présente invention se rapporte au domaine technique général des électroaimants, et plus particulièrement au domaine technique des actionneurs électromagnétiques. Ces derniers sont par exemple utilisés pour actionner des vannes hydrauliques ou pneumatiques.The present invention relates to the general technical field of electromagnets, and more particularly to the technical field of electromagnetic actuators. These are for example used to actuate hydraulic or pneumatic valves.

On connaît les actionneurs électromagnétiques comportant une bobine électrique montée dans une culasse magnétique présentant une première partie polaire et une seconde partie polaire, solidaires de la culasse, lesquelles s'étendent chacune au voisinage d'un côté d'un espace libre dans lequel se déplace un noyau magnétique, mobile en translation sous l'effet de l'alimentation électrique de la bobine électrique et de l'apparition d'une polarité magnétique différente aux parties polaires.Electromagnetic actuators are known having an electric coil mounted in a magnetic yoke having a first pole portion and a second pole portion, integral with the yoke, which each extend adjacent a side of a free space in which moves a magnetic core movable in translation under the effect of the power supply of the electric coil and the appearance of a different magnetic polarity to the polar parts.

On connaît par exemple les électroaimants utilisés dans les actionneurs électromagnétiques, lesquels comportent un circuit magnétique discontinu. Les bobines électriques logées dans ce circuit magnétique génèrent un flux magnétique dans un noyau lorsqu'un courant les parcourt. Les noyaux magnétiques servent alors à canaliser le flux magnétique qui forme une boucle magnétique nord/sud. Sous l'effet du flux magnétique, le noyau mobile est alors entraîné vers la position qui favorisera une circulation optimale de ce flux magnétique. On a donc recours à des actionneurs électromagnétiques dans lesquels le noyau magnétique est positionné de façon asymétrique, signifiant que ledit noyau n'est pas dans une position où les flux magnétiques présentent une configuration symétrique. La position stable dans laquelle la configuration du flux magnétique est symétrique correspond à la position dans laquelle se placera le noyau magnétique sous l'effet du champ magnétique. L'apparition du champ magnétique aura donc pour conséquence de déplacer le noyau magnétique et de fournir une force d'actionnement.For example, electromagnets used in electromagnetic actuators, which comprise a discontinuous magnetic circuit, are known. The electrical coils housed in this magnetic circuit generate a magnetic flux in a core when a current flows through them. The magnetic nuclei then serve to channel the magnetic flux that forms a north / south magnetic loop. Under the effect of the magnetic flux, the mobile core is then driven to the position which will promote optimal circulation of this magnetic flux. Electromagnetic actuators are used in which the magnetic core is positioned asymmetrically, meaning that said core is not in a position where the magnetic fluxes have a symmetrical configuration. The stable position in which the configuration of the magnetic flux is symmetrical corresponds to the position in which the magnetic core will be placed under the effect of the magnetic field. The appearance of the magnetic field will therefore result in moving the magnetic core and provide an actuating force.

Dans ce principe de construction, on retrouve toujours des interruptions dans le circuit magnétique, soit pour favoriser le déplacement du noyau magnétique par le biais d'un jeu radial, soit pour ne pas mettre les pôles magnétiques nord et sud de la bobine en court-circuit magnétique.In this principle of construction, there are always interruptions in the magnetic circuit, either to promote the displacement of the magnetic core by means of a radial clearance, or not to put the magnetic poles north and south of the coil in short. magnetic circuit.

La discontinuité du circuit magnétique entre les pôles induit des défauts d'alignement du noyau mobile produisant, de par des forces électromagnétiques radiales, des frottements nuisibles pouvant aller jusqu'à un phénomène appelé "collage magnétique" du noyau mobile. Le document US 2004/178378 A1 décrit le préambule de la revendication 1. Afin de pallier ce genre de problème, il convient d'avoir recours à des constructions complexes, encombrantes et coûteuses de par la nécessité d'utiliser davantage de pièces constitutives d'un actionneur électromagnétique.The discontinuity of the magnetic circuit between the poles induces misalignment of the mobile core producing, by radial electromagnetic forces, harmful friction up to a phenomenon called "magnetic bonding" of the mobile core. The document US 2004/178378 A1 describes the preamble of claim 1. To overcome this kind of problem, it is necessary to resort to complex constructions, cumbersome and expensive due to the need to use more parts constituting an electromagnetic actuator.

En outre, pour des électrovannes comportant des noyaux immergés dans un circuit fluide, par exemple liquide, et nécessitant une étanchéité vers l'extérieur, on a recours à des dispositifs interposés entre l'espace libre dans lequel se déplacent le noyau magnétique et la bobine. Ces dispositifs constituent des entrefers nuisibles à la bonne circulation des flux magnétiques. Ces entrefers, réalisés en matériaux amagnétiques, favorisent les inconvénients précités.In addition, for solenoid valves comprising cores immersed in a fluid circuit, for example liquid, and requiring sealing to the outside, devices are used interposed between the free space in which the magnetic core and the coil move. . These devices constitute airgaps harmful to the good circulation of the magnetic fluxes. These air gaps, made of non-magnetic materials, favor the aforementioned drawbacks.

Lors de la fabrication d'actionneurs électromagnétiques, il est donc souvent nécessaire de concevoir des dispositifs pour assurer l'étanchéité de la partie électrique, pour garantir le guidage et la mobilité du noyau et pour éviter des courts-circuits magnétiques. Ces dispositifs constituent des entrefers, notamment radiaux, au niveau du noyau mobile ou des parties polaires magnétiques et ce par l'utilisation d'un matériau amagnétique. De façon connue, un court-circuit magnétique contribuerait à une diminution sensible des performances de l'actionneur électromagnétique.In the manufacture of electromagnetic actuators, it is therefore often necessary to design devices to seal the electrical part, to ensure the guiding and mobility of the core and to avoid magnetic short circuits. These devices constitute air gaps, especially radial, at the mobile core or magnetic polar parts and this by the use of a non-magnetic material. In known manner, a magnetic short circuit would contribute to a significant decrease in the performance of the electromagnetic actuator.

Le but de la présente invention vise à optimiser les performances d'un actionneur électromagnétique tout en réduisant les coûts liés à la construction dudit actionneur, ainsi qu'à la fabrication de ses pièces constitutives. Il est donc recherché de simplifier l'actionneur électromagnétique sans nuire à ses performances.The object of the present invention is to optimize the performance of an electromagnetic actuator while reducing the costs associated with the construction of said actuator, as well as the manufacture of its component parts. It is therefore sought to simplify the electromagnetic actuator without impairing its performance.

Un autre but de la présente invention vise à assurer l'étanchéité entre la partie électrique et la partie hydraulique d'un actionneur électromagnétique avec des moyens simples et peu coûteux.Another object of the present invention is to provide a seal between the electrical part and the hydraulic part of an electromagnetic actuator with simple and inexpensive means.

Selon l'invention, l'actionneur électromagnétique comporte les caractéristiques de la revendication 1. Contrairement aux idées reçues, il est possible d'optimiser, voire d'améliorer, les performances d'un actionneur électromagnétique mettant les deux parties polaires en court-circuit magnétique pour guider le déplacement du noyau mobile et en réduisant l'entrefer radial entre ledit noyau et la ou les partie(s) polaire(s) au jeu fonctionnel minimal, nécessaire au déplacement relatif desdites pièces. La jonction magnétique entre les deux parties polaires n'est donc pas un inconvénient, selon la présente invention.According to the invention, the electromagnetic actuator comprises the features of claim 1. Contrary to popular belief, it is possible to optimize, or even improve, the performance of an electromagnetic actuator putting the two polar parts in short circuit magnet for guiding the displacement of the movable core and reducing the radial air gap between said core and the polar portion (s) to the minimum functional clearance necessary for the relative movement of said parts. The magnetic junction between the two polar parts is therefore not a disadvantage, according to the present invention.

Selon un exemple de réalisation, la partie tubulaire présente du côté d'une partie polaire un fond constituant une butée pour le noyau magnétique.According to an exemplary embodiment, the tubular portion has on the side of a polar part a bottom forming a stop for the magnetic core.

Selon un exemple de réalisation, la partie tubulaire est conformée et/ou positionnée pour réaliser une étanchéité entre l'espace libre et la partie électrique, comportant notamment la bobine électrique. Il est donc possible de supprimer toute partie ou dispositif d'étanchéité spécifique. En outre, on aboutit à une construction simplifiée de l'actionneur conforme à l'invention.According to an exemplary embodiment, the tubular portion is shaped and / or positioned to provide a seal between the free space and the electrical part, including the electric coil. It is therefore possible to remove any specific part or sealing device. In addition, it leads to a simplified construction of the actuator according to the invention.

Selon un exemple de réalisation, la partie tubulaire constituant une continuité magnétique entre les deux parties polaires présente au moins localement une paroi de faible épaisseur, choisie pour minimiser les fuites de flux magnétique entre les parties polaires.According to an exemplary embodiment, the tubular portion constituting a magnetic continuity between the two polar parts has at least locally a thin wall, chosen to minimize leakage of magnetic flux between the polar parts.

L'utilisation d'un court-circuit magnétique permet d'optimiser les performances de l'actionneur électromagnétique conforme à l'invention. Les effets d'un entrefer radial réduit, de par l'utilisation d'une partie tubulaire et magnétique, en continuité magnétique avec les parties polaires, compense largement les inconvénients liés à l'apparition d'un court-circuit magnétique au travers de la partie tubulaire.The use of a magnetic short circuit makes it possible to optimize the performance of the electromagnetic actuator according to the invention. The effects of a radial air gap reduced, by the use of a tubular and magnetic part, magnetic continuity with the polar parts, largely offsets the disadvantages associated with the appearance of a magnetic short circuit through the tubular part.

Le court-circuit magnétique est contrôlé par le choix des dimensions de la section transversale de la partie tubulaire. L'absence de pièces de guidage et d'étanchéité spécifiques permet également d'augmenter la section du noyau mobile, améliorant ainsi les performances de l'actionneur conforme à l'invention. De telles performances remarquables ne pouvaient être obtenues avec des actionneurs électromagnétiques connus. On peut donc envisager, dans le cadre de la présente invention, de diminuer l'encombrement, notamment de la bobine électrique, tout en conservant les performances d'un actionneur électromagnétique connu.The magnetic short circuit is controlled by the choice of dimensions of the cross section of the tubular part. The absence of specific guiding and sealing parts also makes it possible to increase the section of the mobile core, thus improving the performance of the actuator according to the invention. Such remarkable performance could not be achieved with known electromagnetic actuators. It is therefore possible to envisage, in the context of the present invention, to reduce the bulk, in particular of the electric coil, while preserving the performance of a known electromagnetic actuator.

L'utilisation d'un matériau magnétique pour la partie tubulaire est également une solution technique plus économique que l'utilisation d'un matériau amagnétique, car il est désormais possible de faire d'une seule pièce les deux parties polaires et la partie tubulaire qui les séparait.The use of a magnetic material for the tubular part is also a more economical technical solution than the use of a non-magnetic material, since it is now possible to make in one piece the two polar parts and the tubular part which separated them.

En outre, on peut supprimer les bagues de guidage sur le noyau qui étaient nécessaires pour guider précisément le noyau du fait qu'il n'y a plus de défaut d'alignement.In addition, it is possible to remove the guide rings on the core which were necessary to precisely guide the core because there is no more misalignment.

Selon un exemple de réalisation, la partie tubulaire présente une paroi d'épaisseur constante et faible, par exemple inférieure à quelques dixièmes de millimètres.According to an exemplary embodiment, the tubular portion has a wall of constant thickness and low, for example less than a few tenths of millimeters.

Selon un autre exemple de réalisation, la partie tubulaire présente une section transversale réduite sur une portion de sa longueur. À titre d'exemple, la partie tubulaire est constitutive au moins partiellement de la seconde partie polaire, dont une extrémité de liaison comportant la section transversale réduite est solidaire de la première partie polaire.According to another embodiment, the tubular portion has a reduced cross section over a portion of its length. By way of example, the tubular part is at least partially constitutive of the second part polar, whose connecting end having the reduced cross section is integral with the first polar portion.

Selon un exemple de réalisation, la partie tubulaire est constitutive au moins en partie des deux parties polaires, lesquelles sont séparées par la portion présentant la section transversale réduite. La partie tubulaire est rapportée par exemple sur la culasse magnétique.According to an exemplary embodiment, the tubular portion is at least partly constitutive of the two polar parts, which are separated by the portion having the reduced cross section. The tubular portion is reported for example on the magnetic yoke.

La partie tubulaire peut aussi être rapportée sur la première partie polaire et sur la culasse.The tubular part can also be attached to the first polar part and the cylinder head.

Selon un autre exemple de réalisation, la partie tubulaire est rapportée sur les deux parties polaires, par exemple par soudure, emmanchement ou collage.According to another exemplary embodiment, the tubular part is attached to the two polar parts, for example by welding, fitting or gluing.

L'actionneur électromagnétique conforme à l'invention présente également l'avantage d'une construction mécanique dans laquelle on supprime au mieux les pièces et les éléments mécaniques de liaison intermédiaire, réduisant par la même occasion le défaut de déplacement ou d'alignement entre les pièces. Ceci est particulièrement intéressant lorsqu'il convient d'aligner par exemple deux paliers d'arbre. Cet alignement sera d'autant meilleur que les paliers seront usinés simultanément dans une même pièce par exemple constitutive des deux parties polaires plutôt que dans des pièces séparées et assemblées entre elles.The electromagnetic actuator according to the invention also has the advantage of a mechanical construction in which the parts and the intermediate linkage mechanical elements are best removed, thereby reducing the lack of displacement or alignment between the elements. rooms. This is particularly interesting when it is necessary to align for example two tree bearings. This alignment will be all the better that the bearings will be machined simultaneously in the same room for example constitutive of the two polar parts rather than in separate parts and assembled together.

La présente invention se rapporte également ou concerne également une vanne hydraulique ou pneumatique comportant un actionneur électromagnétique tel que présenté ci-dessus.The present invention also relates or relates to a hydraulic or pneumatic valve comprising an electromagnetic actuator as presented above.

D'autres caractéristiques et avantages ressortiront également de la description détaillée figurant ci-après, en référence aux dessins annexés, donnés à titre d'exemples, non limitatifs, dans lesquels :

  • la figure 1 est une représentation en coupe d'un exemple de réalisation d'un actionneur électromagnétique conforme à l'invention, associé à une vanne ;
  • la figure 2 est une représentation en coupe d'un autre exemple de réalisation d'un actionneur électromagnétique conforme à l'invention ;
  • la figure 3 est une représentation en coupe d'un autre exemple de réalisation d'un actionneur électromagnétique conforme à l'invention, associé à une vanne ;
  • la figure 4 est une vue en coupe d'un autre exemple de réalisation d'un actionneur électromagnétique conforme à l'invention.
Other characteristics and advantages will also emerge from the detailed description given below, with reference to the appended drawings, given by way of nonlimiting examples, in which:
  • the figure 1 is a sectional representation of an exemplary embodiment of an electromagnetic actuator according to the invention, associated with a valve;
  • the figure 2 is a sectional representation of another embodiment of an electromagnetic actuator according to the invention;
  • the figure 3 is a sectional representation of another embodiment of an electromagnetic actuator according to the invention, associated with a valve;
  • the figure 4 is a sectional view of another embodiment of an electromagnetic actuator according to the invention.

L'actionneur électromagnétique conforme à l'invention, et représenté aux figures 1 à 4, comporte une bobine électrique (1) montée dans une culasse magnétique (2). L'actionneur électromagnétique présente une première partie polaire (3) et une seconde partie polaire (4) solidaires de la culasse (2). Les parties polaires (3) et (4) s'étendent avantageusement chacune au voisinage d'un côté d'un espace libre (5) dans lequel se déplace un noyau magnétique (6). Ce dernier est mobile en translation sous l'effet de l'alimentation électrique de la bobine (1) et de l'apparition d'une polarité magnétique différente des parties polaires (3) et (4).The electromagnetic actuator according to the invention, and represented in Figures 1 to 4 , comprises an electric coil (1) mounted in a magnetic yoke (2). The electromagnetic actuator presents a first part polar (3) and a second polar portion (4) integral with the yoke (2). The pole portions (3) and (4) each advantageously extend in the vicinity of one side of a free space (5) in which a magnetic core (6) moves. The latter is movable in translation under the effect of the power supply of the coil (1) and the appearance of a magnetic polarity different from the polar parts (3) and (4).

L'actionneur électromagnétique conforme à l'invention comporte également une partie tubulaire (7) en matériau magnétique. La partie tubulaire (7) délimite l'espace libre (5) au moins en partie et entoure le noyau magnétique (6), lequel présente par exemple une section transversale circulaire. La partie tubulaire (7) permet de guider le déplacement du noyau magnétique (6). En outre, la partie tubulaire (7) présente une continuité magnétique avec la ou les partie(s) polaire(s) (3) et (4) permettant de réduire au minimum l'entrefer radial entre le noyau magnétique (6) et la ou les partie(s) polaire(s) magnétique(s) (3) et (4) de par la suppression de tout défaut d'alignement entre elles. Il n'y a donc pas, dans l'actionneur conforme à l'invention, de partie intermédiaire amagnétique réalisant une interface de guidage entre les parties polaires magnétiques (3) et (4) et le noyau magnétique (6). La partie tubulaire (7), avantageusement constituée du même matériau magnétique que les parties polaires (3) et (4), permet ainsi de ne former plus qu'une seule partie dispensant ainsi d'avoir à créer des moyens de liaison et d'étanchéité indispensables lorsque les éléments sont constitués de matériaux différents.The electromagnetic actuator according to the invention also comprises a tubular part (7) of magnetic material. The tubular portion (7) delimits the free space (5) at least in part and surrounds the magnetic core (6), which for example has a circular cross section. The tubular portion (7) guides the displacement of the magnetic core (6). In addition, the tubular portion (7) has a magnetic continuity with the polar portion (s) (3) and (4) for minimizing the radial gap between the magnetic core (6) and the or magnetic polar portions (3) and (4) by eliminating any misalignment between them. There is therefore, in the actuator according to the invention, a non-magnetic intermediate portion providing a guide interface between the magnetic pole portions (3) and (4) and the magnetic core (6). The tubular part (7), advantageously made of the same magnetic material as the polar parts (3) and (4), thus makes it possible to form only one part thus dispensing with having to create connection means and indispensable sealing when the elements are made of different materials.

Selon un exemple de réalisation de la figure 1 ou 3, le noyau magnétique (6) présente des rainures périphériques (6a) dans lesquelles sont logés des anneaux ou des patins de guidage (6b) favorisant le déplacement et l'alignement dudit noyau magnétique (6) dans la partie tubulaire (7).According to an embodiment of the figure 1 or 3 the magnetic core (6) has circumferential grooves (6a) in which rings or guide shoes (6b) are accommodated which promote the displacement and alignment of said magnetic core (6) in the tubular part (7).

L'actionneur électromagnétique des figures 1 et 3 comporte également un poussoir (8) traversant l'entrefer axial localisé dans l'espace libre (5) entre une extrémité axiale du noyau magnétique (6), et une extrémité axiale en vis-à-vis de la seconde partie polaire (4) ou d'une partie rapportée en continuité magnétique avec la seconde partie polaire (4). L'entrefer correspond ainsi à une portion de l'espace libre (5) que l'on peut apercevoir aux figures. Avantageusement, la partie tubulaire (7) présente un fond (7a) constituant une butée pour le noyau magnétique (6).The electromagnetic actuator figures 1 and 3 also comprises a pusher (8) passing through the axial air gap located in the free space (5) between an axial end of the magnetic core (6), and an axial end vis-à-vis the second polar part (4) or a magnetic continuity-related portion with the second polar portion (4). The gap corresponds to a portion of the free space (5) that can be seen in the figures. Advantageously, the tubular portion (7) has a bottom (7a) forming a stop for the magnetic core (6).

Aux exemples de réalisation des figures 1 et 3, c'est le corps d'une vanne (9), par exemple hydraulique, qui constitue une partie de la seconde partie polaire (4) délimitant partiellement l'espace libre (5).To the exemplary embodiments of figures 1 and 3 it is the body of a valve (9), for example hydraulic, which constitutes a part of the second polar part (4) partially delimiting the free space (5).

La partie tubulaire (7) est conformée et/ou positionnée pour réaliser l'étanchéité entre l'espace libre (5) et la partie électrique de l'actionneur électromagnétique, comportant notamment la bobine électrique (1). La partie tubulaire (7), conformément à l'invention, constitue une continuité magnétique entre les deux parties polaires (3) et (4) et présente au moins localement une paroi de faible épaisseur choisie pour minimiser des fuites de flux magnétiques. On peut ainsi minimiser l'effet appelé "court-circuit" magnétique entre les deux parties polaires (3) et (4).The tubular portion (7) is shaped and / or positioned to seal between the free space (5) and the electrical part of the actuator electromagnetic, including in particular the electric coil (1). The tubular portion (7), according to the invention, constitutes a magnetic continuity between the two pole portions (3) and (4) and has at least locally a thin wall chosen to minimize magnetic flux leakage. It is thus possible to minimize the effect called magnetic "short-circuit" between the two polar parts (3) and (4).

Selon l'exemple de réalisation des figures 1 et 3, la partie tubulaire (7) présente une paroi d'épaisseur constante et faible, par exemple inférieure à quelques dixièmes de millimètres. À titre d'exemple, l'épaisseur de la partie tubulaire (7) est comprise entre 35/100 et 55/100 de millimètre.According to the example of realization of figures 1 and 3 , the tubular portion (7) has a wall of constant and low thickness, for example less than a few tenths of a millimeter. By way of example, the thickness of the tubular part (7) is between 35/100 and 55/100 of a millimeter.

Selon un autre exemple de réalisation, représenté par exemple aux figures 2 ou 4, la partie tubulaire (7) présente une section transversale réduite (7b) sur une portion de sa longueur. Par section transversale réduite, il convient d'entendre une épaisseur plus faible, prise selon une section transversale. Dans l'exemple de la figure 2, la partie tubulaire (7) est constitutive de la seconde partie polaire (4) dont une extrémité de liaison (7c) comporte la section transversale réduite (7b). Cette extrémité de liaison est en outre solidaire de la première partie polaire (3).According to another exemplary embodiment, represented for example in figures 2 or 4 the tubular portion (7) has a reduced cross-section (7b) over a portion of its length. By reduced cross-section, it is understood to mean a smaller thickness, taken in a cross section. In the example of the figure 2 , the tubular portion (7) is constitutive of the second pole portion (4) having a connecting end (7c) has the reduced cross section (7b). This connecting end is further secured to the first polar portion (3).

Le noyau magnétique (6) est monté dans la partie tubulaire (7) ainsi qu'un ressort (10) participant au maintien de ce noyau en position. Le déplacement du noyau magnétique (6) entraîne également le déplacement d'une tige (11) solidaire dudit noyau magnétique (6). C'est cette tige (11) qui vient actionner par exemple la vanne (9) hydraulique ou pneumatique.The magnetic core (6) is mounted in the tubular portion (7) and a spring (10) participating in maintaining the core in position. The displacement of the magnetic core (6) also causes the displacement of a rod (11) integral with said magnetic core (6). It is this rod (11) which actuates for example the valve (9) hydraulic or pneumatic.

Selon un exemple de réalisation, représenté par exemple à la figure 4, la partie tubulaire (7) est constitutive des deux parties polaires (3) et (4), lesquelles sont séparées par une portion présentant la section transversale réduite (7b). Les deux parties polaires (3) et (4) sont ainsi réalisées en une seule pièce constitutive de la partie tubulaire (7). Le fond (7a) de cette dernière permet également de constituer une butée pour le noyau mobile (6). La tige (11) actionnant par exemple une vanne hydraulique ou pneumatique traverse également une partie polaire complémentaire (4a) en continuité magnétique avec la seconde partie polaire (4). La partie polaire complémentaire (4a) permet avantageusement de délimiter axialement l'espace libre (5) et par conséquent l'entrefer axial s'y rapportant.According to an exemplary embodiment, represented for example at figure 4 , the tubular part (7) is constitutive of the two polar parts (3) and (4), which are separated by a portion having the reduced cross section (7b). The two polar parts (3) and (4) are thus made in one piece constituting the tubular portion (7). The bottom (7a) of the latter also serves to form a stop for the movable core (6). The rod (11) actuating for example a hydraulic or pneumatic valve also passes through a complementary polar part (4a) in magnetic continuity with the second polar part (4). The complementary polar part (4a) advantageously makes it possible to delimit axially the free space (5) and consequently the corresponding axial gap.

La partie tubulaire (7) traverse ou pénètre la culasse magnétique (2) et peut être rapportée, et le cas échéant fixée, sur la culasse magnétique (2) par exemple à l'aide de soudures, emmanchement, sertissage ou tout autre moyen d'assemblage.The tubular part (7) crosses or penetrates the magnetic yoke (2) and can be attached, and if necessary fixed, to the magnetic yoke (2) for example by means of welds, press fitting, crimping or any other means of 'assembly.

Selon l'exemple de réalisation de la figure 2, la partie tubulaire (7) est rapportée et fixée sur la partie polaire (3) par un cordon de soudure (18).According to the embodiment of the figure 2 , the tubular part (7) is attached and fixed on the polar part (3) by a weld bead (18).

Dans l'exemple de réalisation de la figure 4, la partie tubulaire (7) est rapportée directement sur la culasse magnétique (2).In the exemplary embodiment of the figure 4 the tubular part (7) is attached directly to the magnetic yoke (2).

Dans les exemples de réalisation des figures 1 et 3, la partie tubulaire (7) est rapportée et fixée par tout moyen connu et notamment par un cordon de soudure et/ou par emmanchement dans les deux parties polaires (3) et (4). Des extrémités de fixation (12) peuvent aussi être prévues.In the exemplary embodiments of figures 1 and 3 , the tubular portion (7) is attached and fixed by any known means and in particular by a weld seam and / or by fitting into the two polar parts (3) and (4). Fixing ends (12) may also be provided.

La présente invention concerne également des vannes (9) hydrauliques ou pneumatiques, telles que représentées par exemple aux figures 1 et 3, et actionnées par un actionneur électromagnétique conforme à l'invention. Ces vannes (9) présentent un corps en continuité magnétique avec la seconde partie polaire (4), comme cela est représenté à la figure 1, ou un corps constitutif directement de ladite seconde partie polaire (4), tel que cela est représenté à la figure 3. La vanne (9) présente des orifices d'entrée (13) et de sortie (14) ainsi qu'un moyen de rappel élastique (15) sollicitant un organe d'obturation (16) actionné par le noyau magnétique (6). Les vannes (9) hydrauliques ou pneumatiques connues en tant que telles ne sont pas décrites plus en détail ici. Elles sont associées avantageusement à des joints d'étanchéité (17) permettant un raccord étanche sur un conduit non représenté.The present invention also relates to valves (9) hydraulic or pneumatic, as represented for example to figures 1 and 3 , and actuated by an electromagnetic actuator according to the invention. These valves (9) have a body in magnetic continuity with the second polar part (4), as shown in FIG. figure 1 , or a constituent body directly from said second polar portion (4), as shown in FIG. figure 3 . The valve (9) has inlet (13) and outlet (14) ports and an elastic return means (15) biasing a closure member (16) actuated by the magnetic core (6). The valves (9) hydraulic or pneumatic known as such are not described in more detail here. They are advantageously associated with seals (17) allowing a tight connection on a conduit not shown.

La partie tubulaire (7) d'un actionneur électromagnétique conforme à l'invention présente également l'avantage d'améliorer la précision de guidage et de déplacement du noyau magnétique (6) par rapport aux parties polaires (3) et (4).The tubular portion (7) of an electromagnetic actuator according to the invention also has the advantage of improving the precision of guiding and moving the magnetic core (6) relative to the polar parts (3) and (4).

Claims (10)

  1. Electromagnetic actuator comprising an electric coil (1) mounted in a magnetic yoke (2), a first pole part (3) and a second pole part (4) which are secured to the yoke (2) and which each extend in the vicinity of a side of a free space (5) in which there moves a magnetic core (6), mobile in translation under the effect of the electrical power supply of the electric coil (1) and of the appearance of a different magnetic polarity at the pole parts (3) and (4), said electromagnetic actuator further comprising a tubular part (7) made wholly of magnetic material, delimiting at least partially the free space (5) and surrounding the magnetic core (6), so as to guide the displacement of said magnetic core (6), said tubular part (7) exhibiting a magnetic continuity with the pole part or parts (3, 4) so as to reduce the radial gap between the magnetic core (6) and the magnetic pole part or parts (3, 4), said tubular part (7) being shaped and/or positioned to achieve leaktightness between the free space (5) and the electrical part comprising in particular the electric coil (1), and exhibiting at least locally a wall of small thickness, chosen to minimize the leakages of magnetic flux between the pole parts, characterized in that said electromagnetic actuator comprises a pusher (8) passing through the axial gap located in the free space (5) between an axial end of the magnetic core (6), and an axial end opposite the second pole part (4) or a part added on in magnetic continuity with the second pole part (4) and in that the magnetic core (6) comprises peripheral grooves (6a) in which are housed guidance annuli or blocks (6b) promoting the displacement and the alignment of said magnetic core (6) in the tubular part (7).
  2. Electromagnetic actuator according to Claim 1, characterized in that the tubular part (7) exhibits on the side of a pole part, an extremity (7a) constituting a stop for the magnetic core (6).
  3. Electromagnetic actuator according to Claim 1, characterized in that the tubular part (7) exhibits a wall of constant and small thickness, for example less than a few tenths of a millimeter.
  4. Electromagnetic actuator according to Claim 1, characterized in that the tubular part (7) exhibits a reduced cross-section (7b) over a portion of its length.
  5. Electromagnetic actuator according to Claim 4, characterized in that the tubular part (7) is at least partially a constituent of the second pole part (4), and of which a linking end comprising the reduced cross-section (7b) is secured to the first pole part (3).
  6. Electromagnetic actuator according to Claim 4, characterized in that the tubular part (7) is a constituent of both pole parts (3) and (4), which are separated by the portion exhibiting the reduced cross-section (7b).
  7. Electromagnetic actuator according to Claim 6, characterized in that the tubular part (7) is added on to the magnetic yoke (2).
  8. Electromagnetic actuator according to Claim 5, characterized in that the tubular part (7) is added on to the first pole part (3) and to the yoke (2).
  9. Electromagnetic actuator according to Claim 3, characterized in that the tubular part (7) is added on to both pole parts (3) and (4).
  10. Hydraulic or pneumatic valve (9), comprising an electromagnetic actuator in accordance with any one of Claims 1 to 9.
EP06794268.0A 2005-08-03 2006-08-02 Electromagnetic actuator comprising a magnetic tube and used for actuating a hydraulic or pneumatic valve Expired - Fee Related EP1915763B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0508288A FR2889621B1 (en) 2005-08-03 2005-08-03 ELECTROMAGNETIC ACTUATOR COMPRISING A MAGNETIC TUBE AND INTENDED TO ACTUATE A HYDRAULIC OR PNEUMATIC VALVE
PCT/FR2006/001876 WO2007015008A1 (en) 2005-08-03 2006-08-02 Electromagnetic actuator comprising a magnetic tube and used for actuating a hydraulic or pneumatic valve

Publications (2)

Publication Number Publication Date
EP1915763A1 EP1915763A1 (en) 2008-04-30
EP1915763B1 true EP1915763B1 (en) 2017-09-13

Family

ID=36143760

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06794268.0A Expired - Fee Related EP1915763B1 (en) 2005-08-03 2006-08-02 Electromagnetic actuator comprising a magnetic tube and used for actuating a hydraulic or pneumatic valve

Country Status (5)

Country Link
US (1) US8810346B2 (en)
EP (1) EP1915763B1 (en)
CN (1) CN101288136B (en)
FR (1) FR2889621B1 (en)
WO (1) WO2007015008A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007012943A1 (en) * 2007-03-14 2008-09-18 Saia-Burgess Dresden Gmbh proportioning
DE102007020092B4 (en) * 2007-04-26 2011-06-16 Thomas Magnete Gmbh Switchable magnet arrangement
ITVI20110325A1 (en) * 2011-12-19 2013-06-20 T A Fin S R L ELECTROMAGNETIC ACTUATOR, PARTICULARLY FOR SOLENOID VALVES AND GAS INJECTORS.
JP6084787B2 (en) * 2012-06-29 2017-02-22 日立オートモティブシステムズ株式会社 solenoid
DE202014010132U1 (en) * 2013-10-23 2015-04-29 Rhefor Gbr (Vertretungsberechtigter Gesellschafter: Arno Mecklenburg, 10999 Berlin) Pulling shoe control with reversing lifting magnet
US9627121B2 (en) * 2014-05-28 2017-04-18 Flextronics Automotive, Inc. Solenoid robust against misalignment of pole piece and flux sleeve
CN107076330A (en) * 2014-11-13 2017-08-18 伊格尔工业股份有限公司 Electromagnetic valve device
US10197179B2 (en) * 2015-02-11 2019-02-05 Dott. Ing. Mario Cozzani S.R.L. Flow control actuator for reciprocating compressors
ITUB20151950A1 (en) * 2015-07-08 2017-01-08 System Spa Actuator device, in particular for an ink jet print head, with electromagnetic isolation
CN109313973B (en) 2016-03-07 2021-05-07 胡斯可汽车控股有限公司 Electromagnetic actuator with integral pole piece
DE102016220767A1 (en) 2016-10-21 2018-04-26 Robert Bosch Gmbh Electromagnetic actuator
US10908127B2 (en) * 2017-07-14 2021-02-02 Illinois Tool Works Inc. Testing apparatus and handles for testing apparatus
CN110778773B (en) * 2018-07-31 2022-01-11 浙江三花智能控制股份有限公司 Electromagnetic driving device and gas proportional valve with same
US11915866B2 (en) * 2021-07-29 2024-02-27 Woodward, Inc. Enhanced safety coil for SOGAV

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5722633A (en) * 1993-12-24 1998-03-03 Itt Automotive Europe Gmbh Solenoid valve for slip controlled brake systems

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2324642A (en) * 1940-05-03 1943-07-20 Honeywell Regulator Co Electromagnetic valve operator
US3805203A (en) * 1973-01-30 1974-04-16 Gen Motors Corp Electromagnetic thrusters
US4044324A (en) * 1976-04-30 1977-08-23 Ledex, Inc. Coil compressed plunger cavity components for a wet type solenoid
MC1162A1 (en) * 1977-01-11 1978-04-17 G Grandclement ELECTRO-MAGNET FOR SOLENOID VALVE
DE2844694A1 (en) * 1977-10-13 1979-04-26 Minolta Camera Kk ELECTROMAGNET ARRANGEMENT
US4609897A (en) * 1984-12-28 1986-09-02 Thermosen, Incorporated Miniature relay
US4643393A (en) * 1985-03-13 1987-02-17 Shoketsu Kinzoku Kogyo Kabushiki Kaisha Electromagnetic valve
JPH0614412Y2 (en) * 1985-04-09 1994-04-13 株式会社ゼクセル Electromagnetic proportional solenoid
US4683454A (en) * 1985-10-31 1987-07-28 Automatic Switch Company Solenoid actuator with electrical connection modules
JPH0273036U (en) * 1988-11-24 1990-06-04
CN1041868C (en) * 1992-10-27 1999-01-27 麦阀门有限公司 Solenoid
US5263647A (en) * 1992-12-18 1993-11-23 Chrysler Corporation Electromagnetic coil for a fuel injector
JPH06241342A (en) * 1993-02-19 1994-08-30 Aisin Seiki Co Ltd Solenoid valve device
JP3311427B2 (en) * 1993-06-18 2002-08-05 株式会社デンソー Composite magnetic member, method for producing the same, and solenoid valve using the composite magnetic member
US5527117A (en) * 1994-02-16 1996-06-18 Impact Devices, Inc. Braille printing solenoid housing
US5845672A (en) * 1996-12-10 1998-12-08 General Motors Corporation Solenoid coil positioning assembly
FR2759810B1 (en) * 1997-02-14 1999-04-09 Valeo Equip Electr Moteur CONTACTOR FOR A MOTOR VEHICLE STARTER COMPRISING IMPROVED MEANS OF PROTECTION OF AN ELECTRONIC CIRCUIT
US5950605A (en) * 1997-09-03 1999-09-14 Siemens Canada Ltd. Automotive emission control valve having opposing pressure forces acting on the valve member
JPH11287349A (en) * 1998-02-06 1999-10-19 Denso Corp Solenoid control valve
US6877717B2 (en) * 2003-03-14 2005-04-12 Kelsey-Hayes Company Control valve for a vehicular brake system
WO2006009095A1 (en) * 2004-07-16 2006-01-26 Eagle Industry Co., Ltd. Solenoid-controlled valve
US7944333B2 (en) * 2006-09-11 2011-05-17 Gigavac Llc Sealed contactor
ATE431500T1 (en) * 2007-03-05 2009-05-15 Magneti Marelli Spa ELECTROMAGNETIC VALVE FOR FUEL METERING IN AN INTERNAL COMBUSTION ENGINE

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5722633A (en) * 1993-12-24 1998-03-03 Itt Automotive Europe Gmbh Solenoid valve for slip controlled brake systems

Also Published As

Publication number Publication date
CN101288136A (en) 2008-10-15
EP1915763A1 (en) 2008-04-30
WO2007015008A1 (en) 2007-02-08
US8810346B2 (en) 2014-08-19
FR2889621B1 (en) 2011-05-13
FR2889621A1 (en) 2007-02-09
US20100194504A1 (en) 2010-08-05
CN101288136B (en) 2013-03-13

Similar Documents

Publication Publication Date Title
EP1915763B1 (en) Electromagnetic actuator comprising a magnetic tube and used for actuating a hydraulic or pneumatic valve
EP2531756B1 (en) Pilot solenoid valve
EP2608226B1 (en) Solenoid actuator with magnetisable gliding sleeve
EP2598757B1 (en) Vorsteuerstuffe eines servoventils und zweistuffiges servoventil mit einer solchen vorsteuerstuffe
FR2550870A1 (en) CONTROL VALVE SYSTEM
EP0429625B1 (en) Compact monophase electromagnetic actuator
FR2954447A1 (en) SOLENOID VALVE AND DRIVING ASSISTANCE EQUIPMENT EQUIPPED WITH AT LEAST ONE SUCH SOLENOID VALVE
FR2597186A1 (en) VALVE OR VALVE OPERATING WITHOUT FRICTION
EP3209877B1 (en) Fuel injector
FR2544835A1 (en) SOLENOID VALVE FOR REFRIGERATION INSTALLATIONS
EP0587743A1 (en) General purpose fluid control valve
FR2686387A1 (en) UPPER PART OF A SOLENOID VALVE.
EP3913779B1 (en) Gear motor comprising a stator with double diameter
EP3717812B1 (en) Solenoid valve
EP1955339A1 (en) Electromagnetic actuator with permanent magnets which are disposed in a v-shaped arrangement
FR3036765A1 (en) SERVOVALVE PILOTAGE STAGE, WHICH CAN SERVE AS A FIRST FLOOR IN A SERVOVALVE WITH TWO FLOORS.
FR2877708A1 (en) VALVE HAVING A BODY INCORPORATING A FILTER
WO1994010695A1 (en) Electromagnetic valve control device
WO1996020488A1 (en) Multi-air gap magnetic actuator
WO2023031572A1 (en) Electromagnetic actuator with direct drive and improved shock absorbance
FR2785031A1 (en) Cylindrical slide valve with electromagnetic actuator includes two part block held together within molded spool body
FR2905807A1 (en) Electromagnetic actuator for controlling leak volume in movement dampening arrangement, has springs fixed by their centre respectively at ends of pin and by their periphery respectively at support and cover
FR2894378A1 (en) Electromagnetic actuator for internal combustion engine valve, has electromagnet with permanent magnets disposed in core`s central arm to form V shape dividing arm into part supporting magnets and wedge forming end part covering magnets
FR2879339A1 (en) Movable unit actuating device for aseptic liquid spout, has external generator creating magnetic field regularly distributed around non-magnetic envelope and extending along direction parallel to flux of internal generator
WO2011098727A1 (en) Electrodynamic-transducer magnetic motor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080228

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR IT

17Q First examination report despatched

Effective date: 20080523

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BORGWARNER TRANSMISSION SYSTEMS MONACO S.A.M.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BORGWARNER INC.

RBV Designated contracting states (corrected)

Designated state(s): DE FR IT

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20170425

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602006053625

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170913

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602006053625

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20180614

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180716

Year of fee payment: 13

Ref country code: FR

Payment date: 20180718

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602006053625

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190831

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200303

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230522