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Patent Searching and Data


Title:
CORE FOR COIL PART, COIL PART
Document Type and Number:
WIPO Patent Application WO/2018/185990
Kind Code:
A1
Abstract:
[Problem] To provide a core for a coil part that has a structure with which DC superposition characteristics can be improved by means of a technique other than lowering the effective relative magnetic permeability. [Solution] A core for coil part 10 is configured by arranging a plurality of core pieces 11 into a ring shape, wherein l/S of each of the plurality of core pieces 11 is 1.0 or less, where l is the length of each of the core pieces 11 in a magnetic path direction and S the cross-sectional area of each of the core pieces 11 that is orthogonal to the magnetic path direction. This configuration significantly improves the DC superposition characteristics of the coil part.

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Inventors:
KAWARAI Mitsugu (31-1, Miyajima, Uematsu, Natori Cit, Miyagi 26, 〒9811226, JP)
Application Number:
JP2018/000638
Publication Date:
October 11, 2018
Filing Date:
January 12, 2018
Export Citation:
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Assignee:
SUMIDA CORPORATION (Harumi Island Triton Square Office Tower X 14/F, 1-8-10 Harumi Chuo-K, Tokyo 47, 〒1048547, JP)
International Classes:
H01F27/24; H01F17/06; H01F37/00
Foreign References:
JP2008172116A2008-07-24
JP2012109440A2012-06-07
JP2002203729A2002-07-19
JP2011159851A2011-08-18
JPH097855A1997-01-10
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