JPS57143804A - Cylindrical iron core made of segmental pieces - Google Patents

Cylindrical iron core made of segmental pieces

Info

Publication number
JPS57143804A
JPS57143804A JP2871781A JP2871781A JPS57143804A JP S57143804 A JPS57143804 A JP S57143804A JP 2871781 A JP2871781 A JP 2871781A JP 2871781 A JP2871781 A JP 2871781A JP S57143804 A JPS57143804 A JP S57143804A
Authority
JP
Japan
Prior art keywords
iron core
magnetic
segmental pieces
wedge
circle
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
JP2871781A
Other languages
Japanese (ja)
Inventor
Ken Kurihara
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.)
FUTABA DENJIKI KK
Original Assignee
FUTABA DENJIKI KK
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 FUTABA DENJIKI KK filed Critical FUTABA DENJIKI KK
Priority to JP2871781A priority Critical patent/JPS57143804A/en
Publication of JPS57143804A publication Critical patent/JPS57143804A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

PURPOSE:To improve workability and space factor by forming a cylindrical iron core composed of many magnetic segmental pieces of wedge-shaped cross-section arranged in a circle which are welded together. CONSTITUTION:Magnetic segmental pieces 5 of wedge-shaped cross-section are put together in a circle so as to form a cylinder having a through hole 7 at its center. All magnetic segmental pieces are welded together at their inner upper and lower corners 6. Therefore, lines of magnetic induction can easily be through the center axis of the through hole and also at right angle to the center axis and, in addition, magnetic reluctance to alternating field in any direction can be reduced to a mimimum. Moreover, this construction facilitates machining for diameters and lengths of the work, and when a coil is wound on this iron core, the iron core and winding can concentrically be assembled with almost no gaps so that average length of coiled wires to a certain sectional area of an iron core an be mimimized so as to minimize a required amount of copper.
JP2871781A 1981-02-28 1981-02-28 Cylindrical iron core made of segmental pieces Pending JPS57143804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2871781A JPS57143804A (en) 1981-02-28 1981-02-28 Cylindrical iron core made of segmental pieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2871781A JPS57143804A (en) 1981-02-28 1981-02-28 Cylindrical iron core made of segmental pieces

Publications (1)

Publication Number Publication Date
JPS57143804A true JPS57143804A (en) 1982-09-06

Family

ID=12256190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2871781A Pending JPS57143804A (en) 1981-02-28 1981-02-28 Cylindrical iron core made of segmental pieces

Country Status (1)

Country Link
JP (1) JPS57143804A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131352A1 (en) 1983-07-04 1985-01-16 Sanmeidenki Kabushikikaisha Process for manufacturing cores of electromagnet
WO2001010501A1 (en) * 1999-08-07 2001-02-15 Mfh Hyperthermiesysteme Gmbh Magnetic field applicator for heating magnetic or magnetizable substances or solids in biological tissue
WO2004061287A3 (en) * 2002-12-18 2005-05-12 Bosch Gmbh Robert Fuel injector having segmented metal core

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57100711A (en) * 1980-12-15 1982-06-23 Shuho Yoshimura Electromagnetic core

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57100711A (en) * 1980-12-15 1982-06-23 Shuho Yoshimura Electromagnetic core

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131352A1 (en) 1983-07-04 1985-01-16 Sanmeidenki Kabushikikaisha Process for manufacturing cores of electromagnet
WO2001010501A1 (en) * 1999-08-07 2001-02-15 Mfh Hyperthermiesysteme Gmbh Magnetic field applicator for heating magnetic or magnetizable substances or solids in biological tissue
US6635009B2 (en) 1999-08-07 2003-10-21 Mfh Hyperthermiesysteme Gmbh Magnetic field applicator for heating magnetic substances in biological tissue
AU773989B2 (en) * 1999-08-07 2004-06-10 Mfh Hyperthermiesysteme Gmbh Magnetic field applicator for heating magnetic or magnetizable substances or solids in biological tissue
WO2004061287A3 (en) * 2002-12-18 2005-05-12 Bosch Gmbh Robert Fuel injector having segmented metal core
US6892970B2 (en) * 2002-12-18 2005-05-17 Robert Bosch Gmbh Fuel injector having segmented metal core

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