EP0380693A1 - Electro-aimant a noyau mobile - Google Patents

Electro-aimant a noyau mobile Download PDF

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Publication number
EP0380693A1
EP0380693A1 EP89908518A EP89908518A EP0380693A1 EP 0380693 A1 EP0380693 A1 EP 0380693A1 EP 89908518 A EP89908518 A EP 89908518A EP 89908518 A EP89908518 A EP 89908518A EP 0380693 A1 EP0380693 A1 EP 0380693A1
Authority
EP
European Patent Office
Prior art keywords
plunger
magnetic pole
face
stationary element
yoke
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
EP89908518A
Other languages
German (de)
English (en)
Other versions
EP0380693A4 (en
EP0380693B1 (fr
Inventor
Tokio Uetsuhara
Yuichi Ando
Kenji Iio
Kenichiro Kinoshita
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.)
Mitsubishi Mining and Cement Co Ltd
Original Assignee
Mitsubishi Mining and Cement Co Ltd
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
Priority claimed from JP19758188A external-priority patent/JPH0246707A/ja
Priority claimed from JP11272888U external-priority patent/JPH0235408U/ja
Priority claimed from JP22635188A external-priority patent/JPH0276206A/ja
Priority claimed from JP28681688A external-priority patent/JPH02133906A/ja
Priority claimed from JP63319631A external-priority patent/JPH02165606A/ja
Priority claimed from JP114989A external-priority patent/JPH02181904A/ja
Priority claimed from JP443489U external-priority patent/JPH0296706U/ja
Application filed by Mitsubishi Mining and Cement Co Ltd filed Critical Mitsubishi Mining and Cement Co Ltd
Publication of EP0380693A1 publication Critical patent/EP0380693A1/fr
Publication of EP0380693A4 publication Critical patent/EP0380693A4/en
Publication of EP0380693B1 publication Critical patent/EP0380693B1/fr
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01F7/13—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
    • H01F7/16—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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—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

  • This invention relates to a plunger type electromagnet for use in solenoid valve and the like for controlling the flow of fluid such as air, water, fuel and the like.
  • the plunger type electromagnet is designed
  • the present invention is contemplated to solve the foregoing problems encountered during use of the plunger type electromagnet and has for its object to provide a plunger type electromagnet which is high in sensitivity, small in power consumption, compact in size, and light in weight, and which is feasible to meet the needs required by the user.
  • this invention is comprised of the following solutions in combination and has for its object to reduce the capacity of electric source required for the electromagnet, to render the electromagnet compact, and to reduce the production cost.
  • the present invention is made based on the well known findings and it provides dominant advantageous effects and contributes in many respects to a wide variety of civil and industrial fields.
  • the electromagnet includes a stationary element 12 fixed to a yoke 10, a plunger 14 adapted to abut against the stationary element 12, a spring 16 for spacing the stationary element 12 and the plunger 14 away from each other by a predetermined distance, a coil 18 for magnetizing, upon energization, a magnetic circuit comprised of the stationary element 12, the plunger 14 and the yoke 10 and for attracting the plunger 14 against the bias of the spring 16 to cause it to adhere to the stationary element 12, and a bobbin for winding the coil.
  • FIG. 22 illustrates the rest position in which the coil 18 is de-energized and wherein the plunger 14 is spaced away from the stationary element 12 by the bias of the spring 16.
  • the plunger 14 Upon energization of the coil 18, the plunger 14 will be attracted toward the stationary element 12 against the bias of the spring 16, to operate a cuntact or a valve (not shown) and the like connected to the plunger 14.
  • the plunger Upon de-energization of the coil 18, the plunger will be returned to the position shown in Fig. 22.
  • Figs. 23 and 25 illustrate examples of the conventional devices wherein a permanent magnet is provided.
  • a permanent magnet 24 or an annular permanent magnet 26 is employed in combination.
  • Fig. 23 there is shown the rest position in which the coil 18 is de-energized and wherein the plunger 14 is spaced away from the stationary element 12 by the bias of the spring 16.
  • the plunger 14 Upon supplying electric current to the coil 18 in such a direction that magnetomotive force having the polarity identical to that of the magnetomotive force by the permanent magnet 24 is induced by the coil, the plunger 14 will be attracted under the combined action of both magnetomotive forces toward the stationary element 12 against the bias of the spring 16 to operate a contact or a valve (not shown) and the like connected to the plunger 14.
  • Fig. 24 illustrates an example of the conventional abutment faces of the stationary element 12 and the plunger 14.
  • the part above the center line indicates the plunger 14 as spaced away from the stationary element 12, while the part below the center line designates the plunger 14 as attracted to the stationary element.
  • the solid line denotes the line of magnetic force generated by the permanent magnet, while the broken line indicates the line of magnetic force developed by energization of the coil.
  • an attractive plate 22 is provided at an end of the conventional plunger 14 opposite the stationary element 12.
  • the arrangement is such that, when the coil 18 is de-energized, the distance L between the attractive plate 22 and the yoke 10 is equal to the distance Li between the plunger 14 and the stationary element 12.
  • the quantity of magnetic flux ⁇ is constant if the magnetizing ampere-turn is constant.
  • S is the cross-sectional area of the plunger
  • the attractive force F is given by the formula
  • the electromagnetic attractive force in the circumferential direction of the plunger is decreased whereby the frictional resistance in the axial direction of the plunger is reduced.
  • Fig. 2 shows another embodiment which is designed so that, in the operative position of the electromagnet, the attractive plate 22 is brought in contact with the yoke 10 but a gap is held between the plunger 14 and the stationary element 12.
  • Fig. 3 shows another embodiment which is arranged so that, in the operative position of the electromagnet, the plunger 14 is brought into contact with the stationary element 12 but a gap is held between the attractive plate 22 and the yoke 10.
  • Fig. 4 illustrates the mode of connection between the attractive plate 22 and the plunger 14.
  • the attractive plate 22 is affixed by a screw to the plunger 14 by way of an O-ring 21 for limited swinging movement with respect thereto.
  • the plunger is brought into tight contact with the stationary element and the yoke when the coil is energized, whereby the reluctance of the magnetic circuit is reduced.
  • This arrangement also permits to lower the machining accuracy of the plunger with respect to the stationary element and the yoke, so that the production cost of electromagnet may be reduced.
  • Fig. 5 shows another embodiment of the invention wherein the configuration of the abutment faces of the plunger 14 and the stationary element 12 is improved so as to enhance the sensitivity. Assuming that, in Fig. 5,
  • Fig. 6 shows another embodiment in which a flanged tubular member 42 made from a magnetic substance is inserted in and affixed to each of the open ends of the bobbin 20 in order to increase the cross-sectional area of the magnetic path to thereby decrease the magnetic reluctance and enhance the sensitivity of the electromagnet.
  • the magnetic reluctance R of a magnetic circuit is inversely proportional to the cross-sectional area S thereof:
  • Fig. 6(a) is a cross-sectional view thereof
  • Fig. 6(b) is a cross-sectional view taken along the line B-B of Fig. 6(a)
  • Fig. 6(c) is a cross-sectional view taken along the line C-C of Fig. 6(a):
  • Fig. 7 illustrates another embodiment of the electromagnet wherein a pair of magnetic pole pieces, each of which is made by cutting an integral structure comprised of the yoke, stationary element and plunger along a plane perpendicular to the axis of the plunger to provide one such magnetic pole piece at the side of the stationary element, are combined so as to abut against each other along the plane of cutting to provide a stationary magnetic pole piece and a movable magnetic pole piece.
  • Fig. 7(a) is a plan view showing the abutment face between the two pole pieces
  • Figs. 7(b) and 7(c) are cross-sectional views showing, respectively, the pole pieces as attracted together and the pole pieces as released from each other.
  • the electromagnet shown in Fig. 7 includes a stationary magnetic pole piece 30 comprised of two tubular concentric cores of the same height and a movable magnetic pole piece 32 identically shaped, with these magnetic pole pieces being combined to abut along the abutment face 38.
  • the coil 18 and the spring 16 are mounted between the stationary pole piece 30 and the movable pole piece 32, with the coil 16 being fixed to the stationary pole piece 30.
  • This embodiment overcomes these problems by designing the electromagnet such that any unnecessary clearance or gap in the magnetic path is eliminated in order to reduce the magnetic reluctance. Accordingly, an electromagnet is obtainable in which only a small ampere-turn is required to retain the movable magnetic pole piece 32.
  • Fig. 8 shows a modified form of the movable magnetic pole piece 32 shown in Fig. 7.
  • Fig. 8(a) is a plan view showing the abutment face of the movable magnetic pole piece 40 that abuts against the stationary magnetic pole piece and
  • Fig. 8(b) is a cross-sectional view taken along the line A-A of Fig. 8(a).
  • Fig. 9 illustrates another modified embodiment wherein a tubular magnetic pole piece 36 is mounted to the stationary magnetic pole piece 30 of the electromagnet shown in Fig. 7.
  • the arrangement is such that the tubular magnetic pole piece 36 loosely circumscribes the outer surface at an end of the movable magnetic pole piece 32 even when the movable magnetic pole piece 32 is spaced away from the stationary magnetic pole piece 30.
  • the reluctance of the magnetic circuit against the magnetomotive force generated upon energization of the coil is so small that it is possible to develop a sufficiently strong attractive force between the movable magnetic pole piece 32 and the stationary magnetic pole piece 30 even with a small ampere-turn.
  • Fig. 10 illustrates an embodiment which is designed to enlarge the surface area of the opposing faces of the movable and stationary magnetic pole pieces between the stationary element 12 and the plunger 14, on the one hand, and between the plunger 14 and the yoke 10, on the other hand.
  • Fig. 10(a) shows the position when the coil 18 is de-energized and
  • Fig. 10(b) illustrates the plunger 14 as attracted upon energization of the coil 18.
  • the plunger 14 is designed to move along and to be guided by a guide 44 made from a non-magnetic material.
  • the inner face 10a of the yoke 10 and one magnetic pole face 14a of the plunger 14 are designed to face with each other parallel to the direction of movement of the plunger 14 while the other magnetic pole face 14b of the plunger 14 is designed to face perpendicular to the direction of movement of the plunger 14 with a magnetic pole face 14c which has a larger cross-sectional area than that of the stationary element 12.
  • the magnetic flux density at the core portion is equal to the magnetic flux density at the operating gap and, hence, is in the order of 0.2 to 0.6 Wb/m 2. This value is 1/5 to 1/2 of the permissible magnetic flux density for the core portion. This means that it is possible to reduce the cross-sectional area of the core portion to 1/5 to 1/2.
  • the abutment surface area of the magnetic pole faces 14c and 14b may be enlarged, with the cross-sectional area of the stationary element 12 unchanged. This enables to increase the magnetic flux density of the stationary element 12 and, hence, to increase the attractive force.
  • the surface area of the portion of the magnetic pole face 14a which faces the magnetic pole face 10a may be enlarged by increasing the axial length of the magnetic pole face 14a.' The result of this is that the magnetic flux density at that portion is reduced, so that any unbalance of clearance between the plunger 14 and the yoke 10 is corrected. This minimizes the friction between the plunger 14 and the yoke 10 during movement of the plunger 14.
  • Fig. 11 illustrates a second embodiment of the electromagnet shown in Fig. 10. This embodiment is designed so that the abutment faces of the magnetic pole faces 14b and 14c in the embodiment shown in Fig. 10 are enlarged in order to generate a stronger attractive force.
  • Fig. 12 illustrates a third embodiment of the electromagnet shown in Fig. 10. As shown, annular permanent magnet 50 is provided. A large attractive force is developed under the combined action of the magnetic flux due to energization of the coil 18 and the magnetic flux due to the annular permanent magnet 50.
  • Figs. 12(a) and 12(b) illustrate, respectively, the condition in which the coil 18 is de-energized and the condition in which it is energized.
  • Fig. 13 illustrates another embodiment which is designed to enlarge the surface area of the opposing faces of the movable and stationary magnetic pole pieces between the stationary element 12 and the plunger 14, on the one hand, and between the plunger 14 and the yoke 10, on the other hand.
  • the magnetic pole face located at the end face of the yoke 10, or the magnetic pole face 10b coupled to that end face, and one magnetic pole face 14d of the plunger 14 are arranged to face with each other perpendicular to the direction of movement of the plunger 14.
  • the magnetic pole face 10b is designed to present a cross-sectional area larger than that of the stationary element 12.
  • the magnetic pole face 12a of the stationary element 12 and the magnetic pole face 14e of the plunger 14 are arranged to face with each other parallel to the direction of movement of the plunger 14.
  • the magnetic pole face 10b and the one magnetic pole face 14d of the plunger 14 may be designed and configured to form tapered projection and depression which fit with each other (cf. Fig. 11).
  • Fig. 14 illustrates another embodiment wherein an annular permanent magnet 50 is added to the embodiment shown in Fig. 13. A large attractive force is developed under the combined action of the magnetic flux due to energization of the coil 18 and the magnetic flux due to the annular permanent magnet 50.
  • the permanent magnet is not situated in the middle of the travel of the plunger. This is of particular advantage because it is not necessary to divide the coil at both sides of the permanent magnet. Accordingly, it is possible to reduce the production cost.
  • Fig. 15 illustrates another embodiment of the invention.
  • the permanent magnet 50 used in this embodiment differs from the annular permanent magnet 26 employed in the conventional electromagnet shown in Fig. 25, in that it is magnetized in the direction of thickness, instead of being magnetized in the radial direction.
  • the permanent magnet 50 is shaped in the form of an annulus and is arranged coaxially with the plunger to surround the latter.
  • the annular permanent magnet 50 is disposed between the magnetic pole piece 52 of the yoke 10 and the annular magnetic pole piece 48 provided at the side of the coil 18 directed to the magnetic pole piece 52.
  • the permanent magnet is not situated across the path of magnetic flux to be formed when the coil 18 is energized.
  • the annular magnetic pole piece 48 is arranged by making use of a space that would otherwise serve as a gap of the magnetic circuit. Accordingly, it is possible to reduce the magnetic reluctance.
  • Fig. 16 shows another embodiment of the invention.
  • Two such electromagnets as shown in Fig. 15 are combined symmetrically by being abutted with each other, with the magnetic pole piece 52 on the end face of the yoke 10 situated between the two.
  • Two plungers are merged together to form a single common plunger.
  • the ends of the common plunger 14 are reduced in diameter as compared with the central part.
  • the stationary elements 12 at both ends are provided with a through aperture for moveably receiving the reduced diameter portions of the plunger.
  • this embodiment Upon energization of two coils 18, the plunger 14 will be attracted to one of the stationary elements 12 and will thereafter be retained in this magnetically stable position until electric current is supplied to the two coils 18 in the reverse direction to cause the plunger 14 to move toward and to be attracted by the.other of the stationary elements 12. In this manner, this embodiment is magnetically bistable. Accordingly, it is possible to omit the conventional spring.
  • Fig. 17 illustrates an embodiment wherein an annular permanent magnet 50 and an attractive plate 22 are provided.
  • the magnetic pole piece 52 at the end face of the yoke 10 is inserted within the yoke.
  • the length of the plunger 14 is such that the face of the attractive plate 22 is brought into registration with the end face position of the yoke when the plunger 14 is not attracted to the stationary element 12.
  • the annular permanent magnet 50 is arranged between the attractive plate 22 and the magnetic pole piece 52.
  • Fig. 18 illustrates a second embodiment of the electromagnet provided with the annular permanent magnet 50 and the attractive plate 22.
  • the annular permanent magnet 50 is positioned between the magnetic pole piece 52 and the coil 18, while the annular magnetic pole piece 48 is arranged between the annular permanent magnet 50 and the coil 18.
  • Fig. 19 illustrates another embodiment wherein the annular permanent magnet 50 is provided at the outer side of the attractive plate 22.
  • the annular permanent magnet 50 and an annular magnetic pole piece 54 are mounted to the surface of the attractive plate 22.
  • the length of the plunger 14 is such that the face of the annular magnetic pole piece 54 is brought into registration with the end face of the yoke 10 when the plunger 14 is not attracted to the stationary element 12.
  • Fig. 20 shows a working example of the present invention. As shown, the attractive plate 22 is provided and the abutment faces of the stationary element 12 and of the plunger 14 are improved.
  • Fig. 20(a) is a view thereof partly in cross-section
  • Fig. 20(b) is a plan view
  • Fig. 20(c) is a cross-sectional view of the plunger 14
  • Fig. 20(d) is a cross-sectional view of the stationary element 12.
  • the unit of dimension is expressed in mm. In this example, the distance of travel of the plunger 14 is 2.5 mm.
  • Fig. 21 is a graph showing the relationship between the input to the electromagnet and the attractive force, with respect to the working example of the invention shown in Fig. 20 and with respect to the conventional electromagnet having the same dimension but provided with neither an attractive plate nor an improved abutment face. It will be appreciated from the graph of Fig. 21 that according to the invention it is possible to obtain a greater attractive force with less input power as compared with the conventional device.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

Une plaque à ailettes d'attraction est disposée sur le noyau mobile d'un électro-aimant pour améliorer la forme du noyau mobile et la forme du noyau fixe, ou un cylindre pourvu d'un rebord unique et composé d'un matériau magnétique est monté sur l'extrémité dans le sens de l'axe de l'armature de la bobine de champ. Cet agencement permet d'accroître le taux de change de perméance d'une trajectoire magnétique lors de l'attraction, ainsi que la sensibilité de l'électro-aimant. La force de rétention d'attraction est régulée en ajustant la superficie de la zone de contact entre le noyau fixe et le noyau mobile. On donne à un aimant permanent une forme toroïdale et la direction de magnétisation est formée dans le sens de l'épaisseur de la forme toroïdale. Cet agencement permet de simplifier la magnétisation de l'aimant permanent et de réduire le nombre de composants. On peut produire de la sorte en grande série un électro-aimant léger et peu encombrant.
EP89908518A 1988-08-08 1989-07-25 Electro-aimant a noyau mobile Expired - Lifetime EP0380693B1 (fr)

Applications Claiming Priority (15)

Application Number Priority Date Filing Date Title
JP19758188A JPH0246707A (ja) 1988-08-08 1988-08-08 電磁石
JP197581/88 1988-08-08
JP11272888U JPH0235408U (fr) 1988-08-30 1988-08-30
JP112728/88U 1988-08-30
JP226351/88 1988-09-12
JP22635188A JPH0276206A (ja) 1988-09-12 1988-09-12 プランジャー型電磁石鉄心
JP28681688A JPH02133906A (ja) 1988-11-15 1988-11-15 プランジャー型電磁石
JP286816/88 1988-11-15
JP319631/88 1988-12-20
JP63319631A JPH02165606A (ja) 1988-12-20 1988-12-20 プランジャー型電磁石
JP114989A JPH02181904A (ja) 1989-01-09 1989-01-09 電磁石鉄心
JP1149/89 1989-01-09
JP443489U JPH0296706U (fr) 1989-01-20 1989-01-20
JP4434/89U 1989-01-20
PCT/JP1989/000742 WO1990001780A1 (fr) 1988-08-08 1989-07-25 Electro-aimant a noyau mobile

Publications (3)

Publication Number Publication Date
EP0380693A1 true EP0380693A1 (fr) 1990-08-08
EP0380693A4 EP0380693A4 (en) 1991-01-16
EP0380693B1 EP0380693B1 (fr) 1994-06-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89908518A Expired - Lifetime EP0380693B1 (fr) 1988-08-08 1989-07-25 Electro-aimant a noyau mobile

Country Status (3)

Country Link
EP (1) EP0380693B1 (fr)
DE (1) DE68915998T2 (fr)
WO (1) WO1990001780A1 (fr)

Cited By (16)

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WO1993020568A1 (fr) * 1992-04-07 1993-10-14 Avl Medical Instruments Ag Dispositif de commande electromagnetique, notamment pour une soupape
DE4332960A1 (de) * 1993-03-31 1994-10-06 Schrott Harald Bistabiler Elektromagnet, insbesondere Magnetventil
EP0644561A1 (fr) 1993-09-16 1995-03-22 Binder Magnete GmbH Système magnétique pour un électro-aimant de commande
DE4334031A1 (de) * 1993-10-06 1995-04-13 Kuhnke Gmbh Kg H Bistabiler Hubmagnet
US5497135A (en) * 1993-03-31 1996-03-05 Harald Schrott Bistable electromagnet, particularly an electromagnetic valve
WO1997033293A1 (fr) * 1996-03-06 1997-09-12 Siemens Aktiengesellschaft Dispositif de commutation electromagnetique
NL1007072C2 (nl) * 1997-09-18 1999-03-22 Holec Holland Nv Elektromagnetische actuator.
WO1999014769A1 (fr) * 1997-09-18 1999-03-25 Holec Holland N.V. Actionneur electromagnetique
FR2792108A1 (fr) * 1999-04-12 2000-10-13 Schneider Electric Sa Electroaimant a courant continu
WO2001065573A2 (fr) * 2000-02-29 2001-09-07 Tlx Technologies Solenoide a trois positions
EP1225609A2 (fr) * 2001-01-18 2002-07-24 Hitachi, Ltd. Electro-aimant et mécanisme d'actionnement pour un interrupteur
EP1811536A1 (fr) * 2006-01-20 2007-07-25 Areva T&D Sa Actionneur magnetique a aimant permanent a volume reduit
WO2012101148A1 (fr) * 2011-01-26 2012-08-02 Continental Teves Ag & Co. Ohg Électrovanne
CN104051123A (zh) * 2014-06-09 2014-09-17 常熟开关制造有限公司(原常熟开关厂） 电磁铁结构
EP3166116A1 (fr) * 2015-11-09 2017-05-10 HUSCO Automotive Holdings LLC Systèmes et procédés pour un actionneur électromagnétique
US10319549B2 (en) 2016-03-17 2019-06-11 Husco Automotive Holdings Llc Systems and methods for an electromagnetic actuator

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Publication number Priority date Publication date Assignee Title
FR2792109B1 (fr) * 1999-04-12 2001-06-01 Schneider Electric Sa Electroaimant a circuit magnetique simplifie
JP4066040B2 (ja) * 2001-01-18 2008-03-26 株式会社日立製作所 電磁石およびそれを用いた開閉装置の操作機構
DE102010048808A1 (de) 2010-10-20 2012-04-26 Eto Magnetic Gmbh Elektromagnetische Stellvorrichtung

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WO1993020568A1 (fr) * 1992-04-07 1993-10-14 Avl Medical Instruments Ag Dispositif de commande electromagnetique, notamment pour une soupape
DE4332960A1 (de) * 1993-03-31 1994-10-06 Schrott Harald Bistabiler Elektromagnet, insbesondere Magnetventil
US5497135A (en) * 1993-03-31 1996-03-05 Harald Schrott Bistable electromagnet, particularly an electromagnetic valve
EP0644561A1 (fr) 1993-09-16 1995-03-22 Binder Magnete GmbH Système magnétique pour un électro-aimant de commande
DE4334031A1 (de) * 1993-10-06 1995-04-13 Kuhnke Gmbh Kg H Bistabiler Hubmagnet
DE4334031C2 (de) * 1993-10-06 1998-02-12 Kuhnke Gmbh Kg H Verfahren zum Betrieb eines bistabilen Hubmagneten und Hubmagnet zur Durchführung des Verfahrens
US5959519A (en) * 1996-03-06 1999-09-28 Siemens Ag Electromagnetic switching device
WO1997033293A1 (fr) * 1996-03-06 1997-09-12 Siemens Aktiengesellschaft Dispositif de commutation electromagnetique
CN1065357C (zh) * 1996-03-06 2001-05-02 西门子公司 电磁开关设备
WO1999014769A1 (fr) * 1997-09-18 1999-03-25 Holec Holland N.V. Actionneur electromagnetique
CZ301419B6 (cs) * 1997-09-18 2010-02-24 Eaton Electric N.V. Elektromagnetický akcní mechanismus
US6262648B1 (en) 1997-09-18 2001-07-17 Holec Holland N.V. Electromagnetic actuator
NL1007072C2 (nl) * 1997-09-18 1999-03-22 Holec Holland Nv Elektromagnetische actuator.
FR2792108A1 (fr) * 1999-04-12 2000-10-13 Schneider Electric Sa Electroaimant a courant continu
US6404312B1 (en) 1999-04-12 2002-06-11 Schneider Electric Industries Sa DC electromagnet
WO2001065573A2 (fr) * 2000-02-29 2001-09-07 Tlx Technologies Solenoide a trois positions
WO2001065573A3 (fr) * 2000-02-29 2002-03-21 Tlx Technologies Solenoide a trois positions
EP1225609A2 (fr) * 2001-01-18 2002-07-24 Hitachi, Ltd. Electro-aimant et mécanisme d'actionnement pour un interrupteur
EP1225609A3 (fr) * 2001-01-18 2004-03-17 Hitachi, Ltd. Electro-aimant et mécanisme d'actionnement pour un interrupteur
US6940376B2 (en) 2001-01-18 2005-09-06 Hitachi, Ltd. Electromagnet and actuating mechanism for switch device, using thereof
US7075398B2 (en) 2001-01-18 2006-07-11 Hitachi, Ltd. Electromagnet and actuating mechanism for switch device, using thereof
US6816048B2 (en) 2001-01-18 2004-11-09 Hitachi, Ltd. Electromagnet and actuating mechanism for switch device, using thereof
US8013698B2 (en) 2006-01-20 2011-09-06 Areva T&D Sa Permanent-magnet magnetic actuator of reduced volume
FR2896615A1 (fr) * 2006-01-20 2007-07-27 Areva T & D Sa Actionneur magnetique a aimant permanent a volume reduit
EP1811536A1 (fr) * 2006-01-20 2007-07-25 Areva T&D Sa Actionneur magnetique a aimant permanent a volume reduit
WO2012101148A1 (fr) * 2011-01-26 2012-08-02 Continental Teves Ag & Co. Ohg Électrovanne
CN104051123A (zh) * 2014-06-09 2014-09-17 常熟开关制造有限公司(原常熟开关厂） 电磁铁结构
EP3166116A1 (fr) * 2015-11-09 2017-05-10 HUSCO Automotive Holdings LLC Systèmes et procédés pour un actionneur électromagnétique
CN106683824A (zh) * 2015-11-09 2017-05-17 胡斯可汽车控股有限公司 用于电磁致动器的系统和方法
CN106683824B (zh) * 2015-11-09 2020-07-31 胡斯可汽车控股有限公司 用于电磁致动器的系统和方法
US10851907B2 (en) 2015-11-09 2020-12-01 Husco Automotive Holdings Llc System and methods for an electromagnetic actuator
US10319549B2 (en) 2016-03-17 2019-06-11 Husco Automotive Holdings Llc Systems and methods for an electromagnetic actuator
US11201025B2 (en) 2016-03-17 2021-12-14 Husco Automotive Holdings Llc Systems and methods for an electromagnetic actuator

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DE68915998T2 (de) 1994-12-15
DE68915998D1 (de) 1994-07-14
EP0380693A4 (en) 1991-01-16
WO1990001780A1 (fr) 1990-02-22
EP0380693B1 (fr) 1994-06-08

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