EP0179911A1 - Elektromagnetisches betätigungsgerät - Google Patents

Elektromagnetisches betätigungsgerät Download PDF

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Publication number
EP0179911A1
EP0179911A1 EP84901014A EP84901014A EP0179911A1 EP 0179911 A1 EP0179911 A1 EP 0179911A1 EP 84901014 A EP84901014 A EP 84901014A EP 84901014 A EP84901014 A EP 84901014A EP 0179911 A1 EP0179911 A1 EP 0179911A1
Authority
EP
European Patent Office
Prior art keywords
permanent magnet
magnetic
movable element
magnetic circuit
space
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
EP84901014A
Other languages
English (en)
French (fr)
Other versions
EP0179911B1 (de
EP0179911A4 (de
Inventor
Tokio Uetsuhara
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
Application filed by Mitsubishi Mining and Cement Co Ltd filed Critical Mitsubishi Mining and Cement Co Ltd
Publication of EP0179911A1 publication Critical patent/EP0179911A1/de
Publication of EP0179911A4 publication Critical patent/EP0179911A4/de
Application granted granted Critical
Publication of EP0179911B1 publication Critical patent/EP0179911B1/de
Expired legal-status Critical Current

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    • 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

  • the present invention relates to a device which actuates a binary mechanical displacement or holding by electric power in a monostable or bistable manner. More particularly, the present invention relates to an electromagnetic actuator which electromagnetically actuates a binary displacement of mechanical operated device such as a valve rod, piston, movable element of switch, locking means, or the like in accordance with a minute electric current in a pulse series.
  • a holding magnet type electromagnetic actuator has been well known for applying mechanical force to a valve rod, piston or the like.
  • this holding magnet type electromagnetic actuator which comprises a permanent magnet 2, and a pair of cores la and lb which are respectively wound round with solenoid coils 3a and 3b.
  • These permanent magnet 2 , cores la,lb and the solenoid coils 3a and 3b are so arranged as to form a magnetic circuit wherein magnetomotive forces of the electromagnet and the permanent magnet are arranged in series; that is, the magnetomotive force of the solenoid coiles 3a and 3b is generated in the couter direction of the coercive force of the permanent magnet 2 when an electric current is flowed through the solenoid coils 3a and 3b.
  • a contact element 4 can be reversibly held in either states shown in Fig. l(a) or Fig. l(b).
  • this holding type electromagnet has a self- holding capability for the contact element 4 during an electric current is not flowed, it has essentially following demerits.
  • the electromagnetic actuator according to the present invention mainly comprises a magnetic circuit containing a combination of stationary element and movable element, wherein a permanent magnet is so arranged that the magnetomotive force of the permanent magnet is inserted in parallel to the magnetomotive force of electromagnet in the magnetic circuit so as to actuate under either monostable or bistable condition.
  • the present invention can provide the electromagnetic actuator having a simple and hardy structure and capable of operating with high sensitivity and at high speed.
  • Fig. l(a) and (b) are schematic illustrations showing a conventional electromagnetic actuator
  • Fig. 2(a) and (b) are schematic illustrations showing a first embodiment of the present invention
  • Fig. 3(a) and (b) are schematic illustrations showing a second embodiment of the present invention
  • Fig. 4(a) and (b) are schematic illustrations of a third embodiment of the present invention
  • Fig. 5(a) and (b) are schematic illustrations showing a fourth embodiment of the present invention.
  • Fig. 2(a) and (b) show a first embodiment of the present invention, wherein the electromagnetic actuator comprises a stationary element 12 as a magnetic circuit having a space energized by a coil 11; a movable element 14 made of a magnetic material which is inserted between a pole faces 12a and 12b of the stationary element 12 through a first gap 13, the movable element 14 can be mechanically moved in the direction represented by the arrow 14a or 14b met with both the pole faces 12a and 12b at right angle; and a permanent magnet 16 fixed to a yoke 17 of the stationary element 12, the pole faces of the same polarity of the permanent magnet 16 are faced to the side surface of the movable element 14 through a fine second gap 15.
  • the electromagnetic actuator comprises a stationary element 12 as a magnetic circuit having a space energized by a coil 11; a movable element 14 made of a magnetic material which is inserted between a pole faces 12a and 12b of the stationary element 12 through a first gap 13, the movable element 14
  • Fig. 3(a) and (b) show a second embodiment of the present invention, wherein a permanent magnet 16 is so fixed onto the side surface of a movable element 14 as to form a fine second gap 15 between a yoke 17 and the permanent magnet 16.
  • Fig. 4 shows a third embodiment of the present invention, wherein a movable element 14 capable of mechanically moving in the direction met to both pole faces 12a and 12b of a stationary element 12 at right angle is inserted between a space energized by a coil 11 and pole faces 12a and 12b through a first gap 13, a permanent magnet 16 is connected to the stationary element 12 in series, and contact elements 37 is fixedly connected to both pole faces of the permanent magnet 16 so as to face to the side surfaces of the movable element 14 met to the pole face 12b at right angle through a second gap 15.
  • Fig. 5 shows a fourth embodiment of the present invention wherein a pair of magnetic pole segments 45, 45 is arranged at both sides of a movable element 46 instead of the permanent magnet 16 in the third embodiment shown in Fig. 4. An operation of this embodiment will be conducted in the same manner as the above embodiment shown in Fig. 4.
  • the actuator may be also carried out in a monostable operation by employing a mechanical bias force or magnetic bias force; for example by means of a spring, which is a predetermined value smaller than the attractive force of the permanent magnet and applied in the counter direction of the permanent magnet so as to overlap the bias force with the relative movement between the stationary element and the movable element.
  • the embodiment according to the present invention is so designed as to reduce the ampereturn of the coil as possible which supplies operation energy, the insertion of the powerful permanent magnet can result in the following extermely superior effects.
  • the magnetic flux of energizing current and that of the permanent magnet always act each other in only the inside of the soft magnetic material and thus the magnetomotive force caused by flowing an electric current through the coil does not directly act with that of the permanent magnet having a great coercive force as different from the conventional device shown in Fig. 1. Therefore, it is possible to reduce extremely the required ampere turn for energizing so that two different operation parameters for mechanical strength and mechanical position can be controlled by a minute electric current in a pulse series.
  • the movable element applied with the attractive force of 500 g could be moved in the reverse direction for a stroke of 2 mm with a thrust of 1 kg by supplying the extremely minute operation energy such as an electric current of 6V, 0.5A in a pulse series of several ten m / sec.
  • the extremely minute operation energy such as an electric current of 6V, 0.5A in a pulse series of several ten m / sec.
  • conventionally used device requires a three wires type for a control cable in additin to the operation electric power of about 30W for a stroke of 2 mm with a thrust of 1 kg.
  • the embodiment of the present invention can be achieved by using a coil which can be operated by a two-wires type control cable while the conventional device shown in Fig. 1 requires two coils and a three-wires type control cable.
  • the present invention can provide a compact, light and low cost device.
  • the device according to the present invention can be operated by a minute electric current in a pulse series so that it is possible to reduce the cost of wiring equipments for a long distance remote operation.
  • the device according to the present invention can be operated by a small energy such as a low voltage and a miniute current, it is possible to use this device for an essential safety and exploding prevention device in factory or mine, and to use a solar cell as an operation power source of this device.
  • the present invention can be effectively utilized for an electromagnetic valve, electromagnetic piston, electromagnetic locking device, switch operating mechanism, essential safety and exploding prevention device, abnormal retracting mechanism, or various industry and private usage.
EP19840901014 1984-03-05 1984-03-05 Elektromagnetisches betätigungsgerät Expired EP0179911B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1984/000084 WO1985004044A1 (en) 1984-03-05 1984-03-05 Electromagnetic actuator apparatus

Publications (3)

Publication Number Publication Date
EP0179911A1 true EP0179911A1 (de) 1986-05-07
EP0179911A4 EP0179911A4 (de) 1986-07-23
EP0179911B1 EP0179911B1 (de) 1989-06-07

Family

ID=13818258

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840901014 Expired EP0179911B1 (de) 1984-03-05 1984-03-05 Elektromagnetisches betätigungsgerät

Country Status (5)

Country Link
EP (1) EP0179911B1 (de)
AU (1) AU569879B2 (de)
DE (1) DE3490674T1 (de)
GB (1) GB2165096B (de)
WO (1) WO1985004044A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0225388A1 (de) * 1985-06-04 1987-06-16 Mitsubishi Mining & Cement Co., Ltd. Elektromagnetischer betätiger
FR2606927A1 (fr) * 1986-11-19 1988-05-20 Telemecanique Electrique Electro-aimant polarise bistable
DE4108601A1 (de) * 1991-03-18 1992-09-24 Harting Elektronik Gmbh Fang- und haltemagnet
FR2828000A1 (fr) * 2001-07-27 2003-01-31 Commissariat Energie Atomique Actionneur magnetique a aimant mobile
WO2004073139A2 (en) 2003-02-12 2004-08-26 Moog Inc. Torque motor
GB2429032A (en) * 2005-08-02 2007-02-14 Paxton Access Ltd Electromagnetic lock actuator and mechanism
US8179217B2 (en) * 2008-06-30 2012-05-15 Omron Corporation Electromagnet device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60261111A (ja) * 1984-06-08 1985-12-24 Mitsubishi Mining & Cement Co Ltd 電磁アクチユエ−タ
DE8900779U1 (de) * 1989-01-25 1989-05-11 Walloschke, Rudolf, 4972 Loehne, De
GB2342504B (en) * 1998-10-08 2003-04-23 Wladyslaw Wygnanski Magnetic drives
PT1119723E (pt) * 1998-10-08 2005-01-31 Camcon Unidades magneticas
DE29907923U1 (de) * 1999-05-04 1999-08-12 Sheng Chih Sheng Magnetvorrichtung mit wechselbarem Magnetkreis und mit beiden Befestigungsstellen
DE102013208768A1 (de) * 2013-05-13 2014-11-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Elektromagnetischer Aktuator, aktuatorisch bewegbares System enthaltend mehrere solcher Aktuatoren sowie aktuatorisches Bewegungsverfahren

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB958501A (en) * 1959-07-03 1964-05-21 Philips Electrical Ind Ltd Improvements in electromagnetic devices in which a body is moved between two stable end positions
US3772540A (en) * 1972-07-19 1973-11-13 New Process Ind Inc Electromechanical latching actuator
US3859547A (en) * 1971-12-23 1975-01-07 Philip E Massie Multi-position solenoid with latching or nonlatching capability
GB1466555A (en) * 1975-08-27 1977-03-09 Itt Creed Electromagnetic stylus actuator for a stylus printer
US4157520A (en) * 1975-11-04 1979-06-05 Westinghouse Electric Corp. Magnetic flux shifting ground fault trip indicator
JPS58157104A (ja) * 1982-03-12 1983-09-19 Matsushita Electric Works Ltd 有極電磁石

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1047848A (en) * 1962-08-09 1966-11-09 H E & B S Benson Ltd Improvements in d.c. electromagnets with permanentmagnet armatures
DE2033378B2 (de) * 1970-07-06 1976-08-05 Anker-Werke Ag, 4800 Bielefeld Elektromagnetischer antrieb zur datenaufzeichnung
DE2503159C3 (de) * 1975-01-27 1981-05-07 Siemens AG, 1000 Berlin und 8000 München Polarisiertes elektromagnetisches Relais und Verfahren zu dessen Herstellung
DE2550134A1 (de) * 1975-11-07 1977-05-18 Standard Elektrik Lorenz Ag Elektromagnetisches relais
DE2816555A1 (de) * 1977-04-18 1978-10-19 Francaise App Elect Mesure Magnetkreisanordnung fuer einen elektromagneten fuer einen mit einem permanentmagneten als anker
JPS56168315A (en) * 1980-05-30 1981-12-24 Matsushita Electric Works Ltd Polarized magnetic circuit configuration
JPS5889059A (ja) * 1981-11-16 1983-05-27 ム−グ・インコ−ポレ−テツド 電気機械式アクチユエ−タ
JPS5913307A (ja) * 1982-07-14 1984-01-24 Matsushita Electric Works Ltd 薄型有極ソレノイド
JPS5918411U (ja) * 1982-07-23 1984-02-04 オムロン株式会社 有極電磁石装置
WO1984004198A1 (en) * 1983-04-15 1984-10-25 Mitsubishi Mining & Cement Co Electromagnetic actuator apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB958501A (en) * 1959-07-03 1964-05-21 Philips Electrical Ind Ltd Improvements in electromagnetic devices in which a body is moved between two stable end positions
US3859547A (en) * 1971-12-23 1975-01-07 Philip E Massie Multi-position solenoid with latching or nonlatching capability
US3772540A (en) * 1972-07-19 1973-11-13 New Process Ind Inc Electromechanical latching actuator
GB1466555A (en) * 1975-08-27 1977-03-09 Itt Creed Electromagnetic stylus actuator for a stylus printer
US4157520A (en) * 1975-11-04 1979-06-05 Westinghouse Electric Corp. Magnetic flux shifting ground fault trip indicator
JPS58157104A (ja) * 1982-03-12 1983-09-19 Matsushita Electric Works Ltd 有極電磁石

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 7, no. 276 (E-215)[1421],9th December 1983; & JP - A - 58 157 104 (MATSUSHITA DENKO) *
See also references of WO8504044A1 *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0225388A1 (de) * 1985-06-04 1987-06-16 Mitsubishi Mining & Cement Co., Ltd. Elektromagnetischer betätiger
EP0225388A4 (de) * 1985-06-04 1987-10-19 Mitsubishi Mining & Cement Co Elektromagnetischer betätiger.
FR2606927A1 (fr) * 1986-11-19 1988-05-20 Telemecanique Electrique Electro-aimant polarise bistable
EP0272164A2 (de) * 1986-11-19 1988-06-22 Telemecanique Bistabiler polarisierter Elektromagnet
EP0272164A3 (en) * 1986-11-19 1988-07-27 La Telemecanique Electrique Bistable-polarised electromagnet
DE4108601A1 (de) * 1991-03-18 1992-09-24 Harting Elektronik Gmbh Fang- und haltemagnet
DE4108601C2 (de) * 1991-03-18 1995-06-29 Harting Elektronik Gmbh Fang- und Haltemagnet
WO2003012805A2 (fr) * 2001-07-27 2003-02-13 Commissariat A L'energie Atomique Actionneur magnetique a aimant mobile
FR2828000A1 (fr) * 2001-07-27 2003-01-31 Commissariat Energie Atomique Actionneur magnetique a aimant mobile
WO2003012805A3 (fr) * 2001-07-27 2003-10-02 Commissariat Energie Atomique Actionneur magnetique a aimant mobile
US7106159B2 (en) 2001-07-27 2006-09-12 Commissariat A L'energie Atomique Mobile magnet actuator
WO2004073139A2 (en) 2003-02-12 2004-08-26 Moog Inc. Torque motor
EP1593130A2 (de) * 2003-02-12 2005-11-09 Moog Inc. Drehmomentmotor
EP1593130A4 (de) * 2003-02-12 2010-11-10 Moog Inc Drehmomentmotor
GB2429032A (en) * 2005-08-02 2007-02-14 Paxton Access Ltd Electromagnetic lock actuator and mechanism
GB2429032B (en) * 2005-08-02 2010-06-02 Paxton Access Ltd Lock mechanism
US8179217B2 (en) * 2008-06-30 2012-05-15 Omron Corporation Electromagnet device

Also Published As

Publication number Publication date
EP0179911B1 (de) 1989-06-07
WO1985004044A1 (en) 1985-09-12
AU569879B2 (en) 1988-02-25
GB2165096A (en) 1986-04-03
GB2165096B (en) 1987-12-31
GB8523400D0 (en) 1985-10-23
EP0179911A4 (de) 1986-07-23
AU2650384A (en) 1985-09-24
DE3490674T1 (de) 1986-05-15

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