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Title:
INDUCTOR AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2006228824
Kind Code:
A
Abstract:

To provide an inductor which can be improved in insulation properties while being suppressed with a decline in inductance.

Such an inductor is assumed, wherein a coil is embedded in a core consisting of a press-formed body of a ferromagnetic metal powder where the surface of ferromagnetic metal particles 6 is coated with an insulating material having a hardenability. The insulation layer which coats the surface of the ferromagnetic metal particles 6 consists of a plurality of insulation films 5a-5c, each formed of an insulating material hardened individually. By forming the insulation film from the insulation films 5a-5c hardened individually, a strong insulation film 5 can be obtained, and hence the insulation properties can be improved and a decline can be suppressed in inductance.


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Inventors:
ISHII MASAYOSHI
OKITA KAZUYUKI
WADA HIROYUKI
DAIGAKU HAJIME
Application Number:
JP2005038111A
Publication Date:
August 31, 2006
Filing Date:
February 15, 2005
Export Citation:
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Assignee:
TOKYO COIL ENG KK
International Classes:
H01F27/24; H01F1/26; H01F1/44; H01F27/255; H01F41/02
Domestic Patent References:
JP2004031883A2004-01-29
JP2001267160A2001-09-28
JP2004363466A2004-12-24
JP2002280224A2002-09-27
Attorney, Agent or Firm:
鈴江 武彦
河野 哲
中村 誠
蔵田 昌俊
峰 隆司
福原 淑弘
村松 貞男
橋本 良郎