JPS5771108A - Electromagnetic driving device - Google Patents

Electromagnetic driving device

Info

Publication number
JPS5771108A
JPS5771108A JP14798880A JP14798880A JPS5771108A JP S5771108 A JPS5771108 A JP S5771108A JP 14798880 A JP14798880 A JP 14798880A JP 14798880 A JP14798880 A JP 14798880A JP S5771108 A JPS5771108 A JP S5771108A
Authority
JP
Japan
Prior art keywords
spacing
plunger
force
great
magnetic
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.)
Pending
Application number
JP14798880A
Other languages
Japanese (ja)
Inventor
Hideo Mita
Shintaro Harada
Takashi Mitsumoto
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.)
Aisin Corp
Original Assignee
Aisin Seiki 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 Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Priority to JP14798880A priority Critical patent/JPS5771108A/en
Publication of JPS5771108A publication Critical patent/JPS5771108A/en
Pending 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

Landscapes

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

Abstract

PURPOSE:To prevent reduction in suction force at a great stroke by sealing magnetic fluid into the spaceing formed between an electromagnet and a plunger. CONSTITUTION:When a coil 13 is energized, a magnetic loop is formed and a plunger 15 is shifted to the left, and as a result, the volumn of a spacing 17 is reduced. Since a magnetic fluid 18 is not compressive, air 16c is compressed to generate pressur P, which is shifted to the left until the P is equal to F/S; where S is a crosssectioned area and F is a suction force of the plunger end face. When the conduction is suspended, the plunger is driven to the right by a force PS and performs a reciprocating motion by excitation or nonexcitation of the electromagnet 1. The following equation can be written in this case; F=1/2XU<2>XmuS/delta<2> where U is a magnet motive force across between end faces 11c and 15a, mu is a magnetic permeability and delta is a spacing in the end face. According to the above constitution, since the spacing is sealed with the magnetic substance having a great mu, a great force can be generated at a stroke greater than for the air when the spacing is measured constant.
JP14798880A 1980-10-21 1980-10-21 Electromagnetic driving device Pending JPS5771108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14798880A JPS5771108A (en) 1980-10-21 1980-10-21 Electromagnetic driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14798880A JPS5771108A (en) 1980-10-21 1980-10-21 Electromagnetic driving device

Publications (1)

Publication Number Publication Date
JPS5771108A true JPS5771108A (en) 1982-05-01

Family

ID=15442616

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14798880A Pending JPS5771108A (en) 1980-10-21 1980-10-21 Electromagnetic driving device

Country Status (1)

Country Link
JP (1) JPS5771108A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6186905U (en) * 1984-11-14 1986-06-07
WO1998009302A1 (en) * 1996-08-28 1998-03-05 Ferrofluidics Corporation Quiet ferrofluid solenoid
US6242994B1 (en) 1999-03-16 2001-06-05 Ferrofluidics Corporation Apparatus to reduce push back time in solenoid valves
EP0997675A3 (en) * 1998-10-30 2001-07-18 Smc Corporation Solenoid valve
DE10104524A1 (en) * 2001-01-31 2002-08-22 Schuessler Gmbh & Co Kg Adjustment device has magnetic element(s) whose magnetic field strength is adjusted to set distance between bearer and counter elements via ferrous fluid of shape defined by magnetic field
WO2009095725A1 (en) * 2008-01-29 2009-08-06 Wamala Daniel Electromagnetically operated mechanical actuator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6186905U (en) * 1984-11-14 1986-06-07
WO1998009302A1 (en) * 1996-08-28 1998-03-05 Ferrofluidics Corporation Quiet ferrofluid solenoid
US5955934A (en) * 1996-08-28 1999-09-21 Ferrofluidics Corporation Quiet ferrofluid solenoid with cushion
US5969589A (en) * 1996-08-28 1999-10-19 Ferrofluidics Corporation Quiet ferrofluid solenoid
EP0997675A3 (en) * 1998-10-30 2001-07-18 Smc Corporation Solenoid valve
US6242994B1 (en) 1999-03-16 2001-06-05 Ferrofluidics Corporation Apparatus to reduce push back time in solenoid valves
DE10104524A1 (en) * 2001-01-31 2002-08-22 Schuessler Gmbh & Co Kg Adjustment device has magnetic element(s) whose magnetic field strength is adjusted to set distance between bearer and counter elements via ferrous fluid of shape defined by magnetic field
WO2009095725A1 (en) * 2008-01-29 2009-08-06 Wamala Daniel Electromagnetically operated mechanical actuator

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