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Title:
INDUCTOR CORE, ELECTRONIC PEN CORE PORTION, ELECTRONIC PEN, AND INPUT DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/189937
Kind Code:
A1
Abstract:
This inductor core comprises a tubular magnetic material body 10 made of magnetic material and including pores. The magnetic material body 10 includes: an inclined portion 11 having an inclined surface 11a forming a peripheral surface of a truncated cone having an outer diameter that increases from one end 10a toward the other end 10b of the magnetic material body 10; and a straight trunk portion 12 which is disposed coaxially with the inclined portion 11, extends from the other end 10b toward the one end 10a, has an outer peripheral surface 12a forming a peripheral surface of a cylindrical body, and connects with the inclined portion 11. The difference between an average value of the distances between the centers of gravity of the pores in the inclined portion 11 and an average diameter of the pores in the inclined portion 11 is smaller than the difference between an average value of the distances of the centers of gravity of the pores in the straight trunk portion 12 and an average diameter of the pores in the straight trunk portion 12.

Inventors:
OCHIAI, Hitomi (6 Takeda Tobadono-cho, Fushimi-ku, Kyoto-sh, Kyoto 01, 〒6128501, JP)
Application Number:
JP2019/014540
Publication Date:
October 03, 2019
Filing Date:
April 01, 2019
Export Citation:
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Assignee:
KYOCERA CORPORATION (6 Takeda Tobadono-cho, Fushimi-ku Kyoto-sh, Kyoto 01, 〒6128501, JP)
International Classes:
H01F3/08; G06F3/03; G06F3/046
Domestic Patent References:
WO2017183526A12017-10-26
WO2018225719A12018-12-13
Attorney, Agent or Firm:
SAIKYO, Keiichiro (Saikyo Patent Office, Nomura Fudosan Osaka Building 9th Floor 8-15, Azuchimachi 1-chome, Chuo-ku, Osaka-sh, Osaka 52, 〒5410052, JP)
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