JPS5760810A - Self-maintaining solenoid - Google Patents

Self-maintaining solenoid

Info

Publication number
JPS5760810A
JPS5760810A JP13731480A JP13731480A JPS5760810A JP S5760810 A JPS5760810 A JP S5760810A JP 13731480 A JP13731480 A JP 13731480A JP 13731480 A JP13731480 A JP 13731480A JP S5760810 A JPS5760810 A JP S5760810A
Authority
JP
Japan
Prior art keywords
guide cylinder
magnetic material
plunger
piece
yoke piece
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
JP13731480A
Other languages
Japanese (ja)
Inventor
Yoshio Takase
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP13731480A priority Critical patent/JPS5760810A/en
Publication of JPS5760810A publication Critical patent/JPS5760810A/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
    • 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)
  • Electromagnets (AREA)

Abstract

PURPOSE:To obtain a small but high powered solenoid, by a method wherein exciting coils are wound around a non-magnetic guide cylinder which convers a cylindrical plunger made of soft magnetic material and the coil is covered by a yoke piece and a donut-shaped permanent magnet which is magnetized in the axial direction is placed between the bottom surface of that yoke piece and a pole piece on which the guide cylinder is mounted. CONSTITUTION:A cylinderical plunger 1 made of soft magnetic material is inserted into a non-magnetic guide cylinder 2 in such a manner that it can freely slide inside the guide cylinder 2. The bottom 3 of the guide cylinder 2 is mounted on the center of a pole piece disc 4 made of soft magnetic material. Then exciting coil 5a and 5b for attaction and recovery of the plunger 1 are wound around the guide cylinder 2 and the coils are covered by a yoke piece 6. A donut-shaped permanent magnet 7 made of anisotropic magnetic material is placed between the bottom surface of the yoke piece 6 and the surface of the pole piece 4. With above method a solenoid which has small dimensions, high-power, large attraction force and little tendency of declining of magnetism can be obtained.
JP13731480A 1980-09-30 1980-09-30 Self-maintaining solenoid Pending JPS5760810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13731480A JPS5760810A (en) 1980-09-30 1980-09-30 Self-maintaining solenoid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13731480A JPS5760810A (en) 1980-09-30 1980-09-30 Self-maintaining solenoid

Publications (1)

Publication Number Publication Date
JPS5760810A true JPS5760810A (en) 1982-04-13

Family

ID=15195783

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13731480A Pending JPS5760810A (en) 1980-09-30 1980-09-30 Self-maintaining solenoid

Country Status (1)

Country Link
JP (1) JPS5760810A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007227766A (en) * 2006-02-24 2007-09-06 Toshiba Corp Electromagnetic actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007227766A (en) * 2006-02-24 2007-09-06 Toshiba Corp Electromagnetic actuator

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