JPS5642303A - Consecutively changeable device of magnetic field using permanent magnet - Google Patents

Consecutively changeable device of magnetic field using permanent magnet

Info

Publication number
JPS5642303A
JPS5642303A JP11721379A JP11721379A JPS5642303A JP S5642303 A JPS5642303 A JP S5642303A JP 11721379 A JP11721379 A JP 11721379A JP 11721379 A JP11721379 A JP 11721379A JP S5642303 A JPS5642303 A JP S5642303A
Authority
JP
Japan
Prior art keywords
groups
magnet
magnetic field
consecutively
permanent magnet
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
JP11721379A
Other languages
Japanese (ja)
Other versions
JPS5846163B2 (en
Inventor
Manabu Fujioka
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.)
Tokin Corp
Original Assignee
Tohoku Metal Industries 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 Tohoku Metal Industries Ltd filed Critical Tohoku Metal Industries Ltd
Priority to JP54117213A priority Critical patent/JPS5846163B2/en
Publication of JPS5642303A publication Critical patent/JPS5642303A/en
Publication of JPS5846163B2 publication Critical patent/JPS5846163B2/en
Expired 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
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
    • H01F7/0284—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles using a trimmable or adjustable magnetic circuit, e.g. for a symmetric dipole or quadrupole magnetic field

Abstract

PURPOSE:To change consecutively the magnetic field in the gap of the magnetic field consecutively changeable device by a method wherein plates of ferromagnetic material are provided in contact with the groups of permanent magnet being provided placing a gap between them at the inner confronting side faces of a magnetic yoke constituting a closed magnetic circuit, and the groups of permanent magnet are made to rotate respectively against the axis. CONSTITUTION:Groups of cylindrical permanent magnet 6A, 6B being made of rare earth magnets, etc., are drawn up in lines confronting with each other along the inner side faces 5A, 5B of a closed magnetic circuit in the yoke 5 consisting of a soft magnetic material having a high permeability like iron, etc., constituting the inside in -shape. The groups of magnet 6A, 6B are magnetized in the diametrical direction of axis as shown with arrow marks. The plates 7 consisting of magnetic material having high permeability are provided in contact with the groups of magnet 6A, 6B respectively to obtain a uniform magnetic field in the gap 8 between the confronting groups of magnet 6A, 6B. With this construction, by rotating being linked around the axis the whole of magnet group 6A, or the whole of magnet group 6B, or the whole of 6A and 6B to equalize the magnetization direction, the magnetic field in the gap 8 can be consecutively changed widely and uniformly using a small- sized device.
JP54117213A 1979-09-14 1979-09-14 Continuous magnetic field variable device using permanent magnets Expired JPS5846163B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54117213A JPS5846163B2 (en) 1979-09-14 1979-09-14 Continuous magnetic field variable device using permanent magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54117213A JPS5846163B2 (en) 1979-09-14 1979-09-14 Continuous magnetic field variable device using permanent magnets

Publications (2)

Publication Number Publication Date
JPS5642303A true JPS5642303A (en) 1981-04-20
JPS5846163B2 JPS5846163B2 (en) 1983-10-14

Family

ID=14706185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54117213A Expired JPS5846163B2 (en) 1979-09-14 1979-09-14 Continuous magnetic field variable device using permanent magnets

Country Status (1)

Country Link
JP (1) JPS5846163B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007129050A (en) * 2005-11-02 2007-05-24 Japan Science & Technology Agency Magnetic circuit of permanent magnet, and permanent magnet device using same
JP2020165868A (en) * 2019-03-29 2020-10-08 宮城県 Magnetic field generation mechanism and foreign matter inspection device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50138600U (en) * 1974-04-30 1975-11-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50138600U (en) * 1974-04-30 1975-11-14

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007129050A (en) * 2005-11-02 2007-05-24 Japan Science & Technology Agency Magnetic circuit of permanent magnet, and permanent magnet device using same
JP2020165868A (en) * 2019-03-29 2020-10-08 宮城県 Magnetic field generation mechanism and foreign matter inspection device

Also Published As

Publication number Publication date
JPS5846163B2 (en) 1983-10-14

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