JPS5661105A - Electromagnetic structure - Google Patents

Electromagnetic structure

Info

Publication number
JPS5661105A
JPS5661105A JP13721179A JP13721179A JPS5661105A JP S5661105 A JPS5661105 A JP S5661105A JP 13721179 A JP13721179 A JP 13721179A JP 13721179 A JP13721179 A JP 13721179A JP S5661105 A JPS5661105 A JP S5661105A
Authority
JP
Japan
Prior art keywords
winding
plunger
force
permanent magnet
pole
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
JP13721179A
Other languages
Japanese (ja)
Other versions
JPS6346966B2 (en
Inventor
Hiroshi Ueda
Shigeru Oyokota
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP13721179A priority Critical patent/JPS5661105A/en
Publication of JPS5661105A publication Critical patent/JPS5661105A/en
Publication of JPS6346966B2 publication Critical patent/JPS6346966B2/ja
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
    • H01F7/08—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)
  • Diaphragms For Cameras (AREA)
  • Shutters For Cameras (AREA)
  • Automatic Focus Adjustment (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Focusing (AREA)

Abstract

PURPOSE:To move a magnetic member in a hollow drum formed by an electromagnetic winding uniformly and powerfully over the long distance without moving the winding itself, by effectively utilizing the reaction against the force working on the electromagnetic winding. CONSTITUTION:The N pole surface of a permanent magnet 3 is contacted with an end surface 4a of a plunger. A current is conducted in the clockwise direction to the left of the winding 2. In this case, a force acts on the winding 2 in the right-hand direction according to the left hand law, and the plunger 4 moves to the left by the reaction. The back surface of the permanent magnet 3 has a larger diameter than the front surface. The N pole 3a on the front surface is contacted with the end surface 4a of the plunger, and the back surface 3b becomes the S pole. In this constitution, permeance factor of the permanent magnet becomes large, the magnetic fluxes to be generated increase, the magnetic distribution is shifted to the side of the winding 2, and the number of the magnetic flux interlinkage increases. Therefore, the amount of the working force of the plunger increases. If the direction of the current conduction of the winding 2 and the magnetization of the pole surface of the permanent magnet are adequately selected, the characteristics of the amount of the working force caused by the movement of the plunger can be established depending on the balance between the force of the externally operated force and the electromagnetic structure B.
JP13721179A 1979-10-23 1979-10-23 Electromagnetic structure Granted JPS5661105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13721179A JPS5661105A (en) 1979-10-23 1979-10-23 Electromagnetic structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13721179A JPS5661105A (en) 1979-10-23 1979-10-23 Electromagnetic structure

Publications (2)

Publication Number Publication Date
JPS5661105A true JPS5661105A (en) 1981-05-26
JPS6346966B2 JPS6346966B2 (en) 1988-09-20

Family

ID=15193379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13721179A Granted JPS5661105A (en) 1979-10-23 1979-10-23 Electromagnetic structure

Country Status (1)

Country Link
JP (1) JPS5661105A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833352A (en) * 1971-09-02 1973-05-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833352A (en) * 1971-09-02 1973-05-09

Also Published As

Publication number Publication date
JPS6346966B2 (en) 1988-09-20

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