FR2311394A1 - Electromagnetic actuator for hydraulic servo-contactor - has annular induction coil in air gap between case and concentric armature magnet - Google Patents

Electromagnetic actuator for hydraulic servo-contactor - has annular induction coil in air gap between case and concentric armature magnet

Info

Publication number
FR2311394A1
FR2311394A1 FR7515331A FR7515331A FR2311394A1 FR 2311394 A1 FR2311394 A1 FR 2311394A1 FR 7515331 A FR7515331 A FR 7515331A FR 7515331 A FR7515331 A FR 7515331A FR 2311394 A1 FR2311394 A1 FR 2311394A1
Authority
FR
France
Prior art keywords
case
induction coil
coil
electromagnetic actuator
hydraulic servo
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
FR7515331A
Other languages
French (fr)
Other versions
FR2311394B1 (en
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to FR7515331A priority Critical patent/FR2311394A1/en
Priority to DE2621272A priority patent/DE2621272C2/en
Priority to ES447964A priority patent/ES447964A1/en
Priority to IT68192/76A priority patent/IT1072333B/en
Priority to GB2012676A priority patent/GB1548586A/en
Priority to US05/686,505 priority patent/US4071042A/en
Publication of FR2311394A1 publication Critical patent/FR2311394A1/en
Application granted granted Critical
Publication of FR2311394B1 publication Critical patent/FR2311394B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/066—Electromagnets with movable 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
    • H01F7/13—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
    • H01F7/121—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

Landscapes

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

Abstract

The electromagnetic actuator for a hydraulic servo-contactor consists of a magnetic case and at least one annular induction coil in the air-gap between the case and a concentric armature magnet, with the coil and armature axially movable w.r.t. each other. The movable component, coil or armature, is moved by magnetic force generated by a dc control in the coil, and by an opposite force generated by a repelling elements. The induction coil length is greater than the armature length, so that the magnetic force is independent of the movable part movement, and proportional to the control current. The movable part carries out, in addition, a cyclic movement in order to eliminate the device friction hysteresis.
FR7515331A 1975-05-16 1975-05-16 Electromagnetic actuator for hydraulic servo-contactor - has annular induction coil in air gap between case and concentric armature magnet Granted FR2311394A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7515331A FR2311394A1 (en) 1975-05-16 1975-05-16 Electromagnetic actuator for hydraulic servo-contactor - has annular induction coil in air gap between case and concentric armature magnet
DE2621272A DE2621272C2 (en) 1975-05-16 1976-05-13 Electromagnetic actuator
ES447964A ES447964A1 (en) 1975-05-16 1976-05-14 Electromagnetic actuator, notably for hydraulic servo-control valve
IT68192/76A IT1072333B (en) 1975-05-16 1976-05-14 ELECTROMAGNETIC ACTUATOR FOR HYDRAULIC VALVES PARTICULARLY FOR AUTOMATIC SPEED CHANGES FOR VEHICLES
GB2012676A GB1548586A (en) 1975-05-16 1976-05-14 Electromagnetic actuator
US05/686,505 US4071042A (en) 1975-05-16 1976-05-14 Electromagnetic actuator, notably for hydraulic servo-control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7515331A FR2311394A1 (en) 1975-05-16 1975-05-16 Electromagnetic actuator for hydraulic servo-contactor - has annular induction coil in air gap between case and concentric armature magnet

Publications (2)

Publication Number Publication Date
FR2311394A1 true FR2311394A1 (en) 1976-12-10
FR2311394B1 FR2311394B1 (en) 1979-08-24

Family

ID=9155334

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7515331A Granted FR2311394A1 (en) 1975-05-16 1975-05-16 Electromagnetic actuator for hydraulic servo-contactor - has annular induction coil in air gap between case and concentric armature magnet

Country Status (1)

Country Link
FR (1) FR2311394A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443005A1 (en) * 1978-11-29 1980-06-27 Gresen Manufacturing Co ELECTRICALLY ACTUATED PROPORTIONAL CONTROL VALVE
EP0016436A2 (en) * 1979-03-26 1980-10-01 Regie Nationale Des Usines Renault Servo valve
FR2490867A1 (en) * 1980-09-24 1982-03-26 Olivetti & Co Spa SAMARIUM-COBALT ELECTRO-MAGNETS AND SERVO-CONTROL DEVICES COMPRISING SAID ELECTRO-MAGNETS
FR2542497A1 (en) * 1983-03-10 1984-09-14 Singer Co HYBRID LINEAR CONTROL DEVICE
FR2552925A1 (en) * 1983-10-03 1985-04-05 Itt SOLENOID
WO1992004721A1 (en) * 1990-08-31 1992-03-19 Bruno Gruber Electromagnetic regulating device
EP0838827A1 (en) * 1996-10-28 1998-04-29 Kabushiki Kaisha Tokai Rika Denki Seisakusho Electromagnetic solenoid
US5825270A (en) * 1995-07-12 1998-10-20 Kabushiki Kaisha Tokai Rika Denki Seisakusho Electromagnetic solenoid
WO2002041331A1 (en) * 2000-11-14 2002-05-23 Elektrische Automatisierungs- Und Antriebstechnik Eaat Gmbh Chemnitz Actuator that functions by means of a movable coil arrangement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1489088A1 (en) * 1964-10-30 1969-05-29 List Dipl Ing Heinrich Polarized electromagnetic propulsion system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1489088A1 (en) * 1964-10-30 1969-05-29 List Dipl Ing Heinrich Polarized electromagnetic propulsion system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443005A1 (en) * 1978-11-29 1980-06-27 Gresen Manufacturing Co ELECTRICALLY ACTUATED PROPORTIONAL CONTROL VALVE
EP0016436A2 (en) * 1979-03-26 1980-10-01 Regie Nationale Des Usines Renault Servo valve
EP0016436A3 (en) * 1979-03-26 1981-03-25 Regie Nationale Des Usines Renault Servo valve
FR2490867A1 (en) * 1980-09-24 1982-03-26 Olivetti & Co Spa SAMARIUM-COBALT ELECTRO-MAGNETS AND SERVO-CONTROL DEVICES COMPRISING SAID ELECTRO-MAGNETS
FR2542497A1 (en) * 1983-03-10 1984-09-14 Singer Co HYBRID LINEAR CONTROL DEVICE
FR2552925A1 (en) * 1983-10-03 1985-04-05 Itt SOLENOID
WO1992004721A1 (en) * 1990-08-31 1992-03-19 Bruno Gruber Electromagnetic regulating device
US5825270A (en) * 1995-07-12 1998-10-20 Kabushiki Kaisha Tokai Rika Denki Seisakusho Electromagnetic solenoid
EP0838827A1 (en) * 1996-10-28 1998-04-29 Kabushiki Kaisha Tokai Rika Denki Seisakusho Electromagnetic solenoid
WO2002041331A1 (en) * 2000-11-14 2002-05-23 Elektrische Automatisierungs- Und Antriebstechnik Eaat Gmbh Chemnitz Actuator that functions by means of a movable coil arrangement
WO2002041332A1 (en) * 2000-11-14 2002-05-23 Parker Hannifin Gmbh Actuator for a fluid valve
US6975195B2 (en) 2000-11-14 2005-12-13 Parker Hannifin Gmbh Actuator for a fluid valve

Also Published As

Publication number Publication date
FR2311394B1 (en) 1979-08-24

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Legal Events

Date Code Title Description
ST Notification of lapse