EP0759625A1 - Actionneurs magnétiques - Google Patents

Actionneurs magnétiques Download PDF

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Publication number
EP0759625A1
EP0759625A1 EP96306115A EP96306115A EP0759625A1 EP 0759625 A1 EP0759625 A1 EP 0759625A1 EP 96306115 A EP96306115 A EP 96306115A EP 96306115 A EP96306115 A EP 96306115A EP 0759625 A1 EP0759625 A1 EP 0759625A1
Authority
EP
European Patent Office
Prior art keywords
poles
solenoid
actuator
polarity
permanent magnet
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.)
Withdrawn
Application number
EP96306115A
Other languages
German (de)
English (en)
Inventor
Ira Dr. Goldberg
Nigel Spurr
Jeffrey Cunliffe
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.)
Inteva Products France SAS
ArvinMeritor Light Vehicle Systems UK Ltd
Original Assignee
ArvinMeritor Light Vehicle Systems France SA
Rockwell Light Vehicle Systems UK 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
Application filed by ArvinMeritor Light Vehicle Systems France SA, Rockwell Light Vehicle Systems UK Ltd filed Critical ArvinMeritor Light Vehicle Systems France SA
Publication of EP0759625A1 publication Critical patent/EP0759625A1/fr
Withdrawn legal-status Critical Current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
    • H01F7/14—Pivoting armatures
    • 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
    • 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 actuators, useful primarily but not exclusively in locking systems of motor vehicles.
  • the actuator causes locking or unlocking (for example) by powered displacement of a component.
  • the displacement may be rectilinear, but this can be converted into rotary motion.
  • the displacement may be rotary or an angular movement of a component equivalent to movement of a part through part of a revolution about an axis, and such motions may be converted to rectilinear motion.
  • the invention is particularly applicable to the actuation of locking assemblies of vehicle doors and other closures such as boot lids, bonnets and petrol flaps for their remote operation as part of a central door locking (CDL) system of the vehicle in known manner.
  • CDL central door locking
  • the object of the invention is to provide a power actuator of particularly simple, durable and compact construction requiring few moving parts and which is reliable, efficient and adaptable.
  • the invention provides an actuator and/or a vehicle locking assembly as defined by some one or more of the appended claims.
  • an actuator 10 includes a single solenoid 12 having coil windings 13 arranged in cylindrical shape about a hollow axis providing two poles 12a, 12b at its opposite ends.
  • a substantially nonmagnetic rod 14 extends along that axis through the solenoid.
  • Rod 14 is longer than solenoid 12 and is free to move axially therein.
  • It carries permanent magnets 16, 18 of disc form at each end.
  • the two permanent magnets are arranged in magnetic opposition, that is to say, their north poles 16a, 18a face each other and their south poles 16b, 18b are remote from one another. Alternatively the south poles face each other and the north poles are remote.
  • the stroke i.e. drive distance will be dependant on the spacing between the like magnetic faces of magnets 16, 18 as compared to the total axial length of solenoid 12.
  • the solenoid may be cased or framed in a soft steel outer tube 19 which will tend to confine the flux in the radial direction.
  • the solenoid has a soft steel tubular core 20 extending from end-to-end, to like effect, and the end faces of this liner core and of tube 19 will act as keepers for one or other of magnets 16, 18, that is to say hold the actuator in one or other position against movement, at times when there is no energising current in windings 13 and little or no residual electromagnetic field in solenoid 12.
  • the permanent magnets have soft steel casings 22, 24 covering all except the faces adjacent the solenoid. They will channel the flux appropriately.
  • actuator 10 has a bistable latching property. Not only is rod 14 displaced, i.e. actuated when current is supplied in the appropriate switched direction, but actuator 10 remains latched in the switched position even when solenoid 12 is not energised until reverse current is applied, and then it displaces and again remains latched in the new position, and so on.
  • the value of the applied current requires to be dependant upon the characteristics of actuator 10 itself, and also of the associated door latch or other mechanism which is to be powered by the actuator.
  • FIG. 2-4 An example of a door locking assembly 30 so powered is shown in Figures 2-4, forming part of a CDL system of a vehicle.
  • Actuator 10 is mounted on a body 32 of the assembly with an extension of rod 14 pivotally connected to an arm of a CDL locking lever 34.
  • Application of current of appropriate polarity to the solenoid of actuator 10 under the control of a central logic module of the system in known manner will shift lever 34 between a locked condition ( Figure 3) and an unlocked condition ( Figure 4).
  • the above latching property ensures that the mechanism is retained in the selected condition without further power requirement until a subsequent operation.
  • solenoid For some purposes, it may be preferred to provide more than one solenoid and these could act in either a series or a parallel arrangement, possibly with extra permanent magnets. This may have advantages in enabling a physically different shape to be used, as appropriate to enable the actuator to be fitted into confined dimensions or a space of awkward contour as in or on a vehicle latch or lock assembly, and in providing extra power and/or latching security.
  • a pair of coils 42, 44 is wound around the respective limbs 46, 48 of a U shaped core 50 (one coil on each limb) and with the limbs extending beyond the coils at their free ends.
  • the windings/switchings are such that said free end of one limb of the U is of one polarity when the electromotive field exists as a result of the electrical energisation, and the free end of the other limb is of opposite polarity.
  • Two permanent magnets 52, 54 located with like poles adjacent lie between the free ends of limbs 46, 48 and are attracted/repelled between limbs 46, 48 according to the energisation, and remain latched by the permanent magnetism when the coils are de-energised. Again this provides bistable latching.
  • Magnets 52, 54 are arranged on opposite faces of a lever 56 pivoted on a fulcrum 58 in the bridge of the U shape, the free arm 60 of the lever opposite to the magnets being used to provide the required drive output of the actuator.
  • different required displacement strokes can be provided by adjustment of the ratio of dimensions between the fulcrum and the ends of the lever, for any one value of actual magnetic movement, although different magnetic displacement is also possible to give different actuation effects.
  • Actuator 40 may be incorporated into a CDL system locking assembly 62 as in Figure 6, the actuator forming an end part of the generally rectangular assembly conveniently contained in a common housing 64 to form a compact unit.
  • the arm 60 coacts with the locking mechanism to effect remotely controlled locking and unlocking of the assembly, and/or superlocking thereof for added security of the associated door or other closure by disabling manual mechanical release of the lock from both the inside and outside of the vehicle in known manner.
  • a third form of actuator 70 also provides angular movement of a component carrying permanent magnets.
  • a member 72 ( Figure 7) extending only radially of a fulcrum axis 74 (instead of diametrically as in the second described version) is fast with a spindle 76 extending along that axis. The spindle is then part-rotated by movement of a pair of magnets 78, 80 mounted on the distal end of member 72 with like poles adjacent as in the second example.
  • a single coil 82 is arranged as a wound part-toroid extending over the major part of the periphery of C-shaped ferrite or similar core 84, e.g. having a diameter of 50mm, the opposite ends of the core winding providing areas of opposite polarity at the core end faces when the winding is energised.
  • Magnets 78, 80 lie within the gap between the core ends.
  • This design can be particularly compact in one dimension, and again provides bistable latching.
  • the spindle 76 is centred within the core.
  • the spindle 76a is spaced outside the core 84 to give more direct drive input to locking mechanism of a CDL system locking assembly 62a of the same type as shown in Figure 6, with member 72a extending into the core gap and carrying the magnets 78, 80 on its distal end as above.
  • the invention also contemplates arrangements in which a single permanent magnet, for example a horse-shoe magnet, or a pair of magnets with opposite poles adjacent, co-acts with a solenoid having oppositely handed coil winding sections giving like magnetic polarity at its opposite ends, which polarity is reversed by switching the current to provide relative movement between the solenoid and magnet or magnets.
  • a single permanent magnet for example a horse-shoe magnet, or a pair of magnets with opposite poles adjacent
  • a solenoid having oppositely handed coil winding sections giving like magnetic polarity at its opposite ends, which polarity is reversed by switching the current to provide relative movement between the solenoid and magnet or magnets.
  • the solenoid might be displaceable to provide the drive output with the magnets in fixed relationship thereto, or both the magnets and the solenoid might be displaceable in opposite directions to provide drive in the manner of a push-pull linkage.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Lock And Its Accessories (AREA)
EP96306115A 1995-08-23 1996-08-21 Actionneurs magnétiques Withdrawn EP0759625A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9517226.8A GB9517226D0 (en) 1995-08-23 1995-08-23 Magnetic actuators
GB9517226 1995-08-23

Publications (1)

Publication Number Publication Date
EP0759625A1 true EP0759625A1 (fr) 1997-02-26

Family

ID=10779623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96306115A Withdrawn EP0759625A1 (fr) 1995-08-23 1996-08-21 Actionneurs magnétiques

Country Status (3)

Country Link
EP (1) EP0759625A1 (fr)
GB (1) GB9517226D0 (fr)
WO (1) WO1997008717A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004001777A1 (fr) * 2002-06-19 2003-12-31 Arvinmeritor Light Vehicle Systems (Uk) Ltd. Actionneur
GB2369931B (en) * 2000-07-06 2004-06-30 Camcon Ltd Improved electro-magnetically operable device
EP2367180A3 (fr) * 2010-03-19 2012-03-21 Adulis Actionneur linéaire électromagnétique
EP1953774A3 (fr) * 2007-01-12 2012-10-24 Saia-Burgess Inc. Cheville de verrouillage bistable à actionnement électromagnétique
WO2016075571A1 (fr) * 2014-11-13 2016-05-19 Director General, Defence Research & Development Organisation (Drdo) Actionneur magnétique bistable
WO2022043112A1 (fr) * 2020-08-26 2022-03-03 Assa Abloy Ab Agencement de dispositif de verrouillage, dispositif de verrouillage comprenant l'agencement, et procédé
EP4184709A1 (fr) * 2021-11-17 2023-05-24 MTI Wireless Edge Ltd. Système d'orientation de faisceau automatique pour une antenne à réflecteur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928988A (en) * 1972-08-12 1975-12-30 Luth Claus Peter Magnetic control device for yarn guides
FR2315754A1 (fr) * 1975-06-26 1977-01-21 Mecanismes Comp Ind De Perfectionnements aux actionneurs electromagnetiques
JPS5932111A (ja) * 1982-08-16 1984-02-21 Kiyoshi Hama ロツク機構付き電磁石装置
JPS61220310A (ja) * 1985-03-26 1986-09-30 Shiyuukou Denshi Kk 双方向ソレノイド
GB2227608A (en) * 1989-01-25 1990-08-01 H U Dev Corp Solenoid actuators

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3928988A (en) * 1972-08-12 1975-12-30 Luth Claus Peter Magnetic control device for yarn guides
FR2315754A1 (fr) * 1975-06-26 1977-01-21 Mecanismes Comp Ind De Perfectionnements aux actionneurs electromagnetiques
JPS5932111A (ja) * 1982-08-16 1984-02-21 Kiyoshi Hama ロツク機構付き電磁石装置
JPS61220310A (ja) * 1985-03-26 1986-09-30 Shiyuukou Denshi Kk 双方向ソレノイド
GB2227608A (en) * 1989-01-25 1990-08-01 H U Dev Corp Solenoid actuators

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 119 (E - 248) 5 June 1984 (1984-06-05) *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 059 (E - 482) 24 February 1987 (1987-02-24) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2369931B (en) * 2000-07-06 2004-06-30 Camcon Ltd Improved electro-magnetically operable device
WO2004001777A1 (fr) * 2002-06-19 2003-12-31 Arvinmeritor Light Vehicle Systems (Uk) Ltd. Actionneur
CN100342462C (zh) * 2002-06-19 2007-10-10 英国阿文美驰轻型车系统有限公司 致动器
US7532098B2 (en) 2002-06-19 2009-05-12 Arvinmeritor Light Vehicle Systems (Uk) Limited Actuator
KR100926868B1 (ko) * 2002-06-19 2009-11-16 메리터 테크놀로지, 아이엔씨. 액추에이터
EP1953774A3 (fr) * 2007-01-12 2012-10-24 Saia-Burgess Inc. Cheville de verrouillage bistable à actionnement électromagnétique
EP2367180A3 (fr) * 2010-03-19 2012-03-21 Adulis Actionneur linéaire électromagnétique
WO2016075571A1 (fr) * 2014-11-13 2016-05-19 Director General, Defence Research & Development Organisation (Drdo) Actionneur magnétique bistable
WO2022043112A1 (fr) * 2020-08-26 2022-03-03 Assa Abloy Ab Agencement de dispositif de verrouillage, dispositif de verrouillage comprenant l'agencement, et procédé
EP4184709A1 (fr) * 2021-11-17 2023-05-24 MTI Wireless Edge Ltd. Système d'orientation de faisceau automatique pour une antenne à réflecteur
US12113282B2 (en) 2021-11-17 2024-10-08 Mti Wireless Edge Ltd. Automatic beam steering system for a reflector antenna

Also Published As

Publication number Publication date
GB9517226D0 (en) 1995-10-25
WO1997008717A1 (fr) 1997-03-06

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