JPS5778122A - Manufacture of cylindrical inductor - Google Patents

Manufacture of cylindrical inductor

Info

Publication number
JPS5778122A
JPS5778122A JP15412480A JP15412480A JPS5778122A JP S5778122 A JPS5778122 A JP S5778122A JP 15412480 A JP15412480 A JP 15412480A JP 15412480 A JP15412480 A JP 15412480A JP S5778122 A JPS5778122 A JP S5778122A
Authority
JP
Japan
Prior art keywords
die
powder
ferrite
mold
molded
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
JP15412480A
Other languages
Japanese (ja)
Other versions
JPS6246051B2 (en
Inventor
Hideaki Murakami
Kiyoshi Kudo
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP15412480A priority Critical patent/JPS5778122A/en
Publication of JPS5778122A publication Critical patent/JPS5778122A/en
Publication of JPS6246051B2 publication Critical patent/JPS6246051B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

PURPOSE:To obtain a cylindrical inductor by intergrally forming a member having a magnetic permeability lower than a ferrite core at each of both ends of the core wound with a coil and mounting electrodes on the surface of the members. CONSTITUTION:A lower die 2 is brought down lower than the surface of a mold 3, ferrite powder 4 having low mu is filled in the mold 3, and the powder is temporarily molded by an upper die 1. Then, the die 2 is similarly lowered, ferrite powder 5 having high mu is filled in the mold 3, and the powder is temporarily molded by the die 1. Subsequently, the die 2 is further brought again down further lower, the powder 4 is then filled in the mold, the powder is temporarily molded by the die 1, and a molded unit 7 is extruded by the die 2. The molded unit 7 is then baked to seize electrodes to the low mu ferrite layers at both ends, coils are wound on the high mu ferrite layer, the ends are soldered to the electrodes, metallic caps are press-fitted to both the ends, and the exposed coils are covered with resin to complete it. Since it is thus integrated, it has larger heat resistance strength at the time of soldering than a conventional bonding method of bonding nonmagnetic unit to a magnetic core adapted for mass production.
JP15412480A 1980-10-31 1980-10-31 Manufacture of cylindrical inductor Granted JPS5778122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15412480A JPS5778122A (en) 1980-10-31 1980-10-31 Manufacture of cylindrical inductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15412480A JPS5778122A (en) 1980-10-31 1980-10-31 Manufacture of cylindrical inductor

Publications (2)

Publication Number Publication Date
JPS5778122A true JPS5778122A (en) 1982-05-15
JPS6246051B2 JPS6246051B2 (en) 1987-09-30

Family

ID=15577433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15412480A Granted JPS5778122A (en) 1980-10-31 1980-10-31 Manufacture of cylindrical inductor

Country Status (1)

Country Link
JP (1) JPS5778122A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009266929A (en) * 2008-04-23 2009-11-12 Daido Steel Co Ltd Powder magnetic core and its manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009266929A (en) * 2008-04-23 2009-11-12 Daido Steel Co Ltd Powder magnetic core and its manufacturing method

Also Published As

Publication number Publication date
JPS6246051B2 (en) 1987-09-30

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