Title:
インダクタ用コア、電子ペン用芯体部、電子ペンおよび入力装置
Document Type and Number:
Japanese Patent JP6928169
Kind Code:
B2
Abstract:
An inductor core includes: a tubular magnetic material body (10) formed of magnetic material. The tubular magnetic material body (10) includes an inclined portion (11) including an inclined surface (11a) which constitutes a peripheral surface of a truncated cone having an outer diameter that increases from one end (10a) toward the other end (10b) of the tubular magnetic material body (10); and a straight trunk portion (12) which is disposed coaxially with the inclined portion (11), includes an outer peripheral surface (12a, 12b) which constitutes a peripheral surface of a cylindrical body extending from the other end (10b) toward the one end (10a) of the tubular magnetic material body, and is connected with the inclined portion (11). An arithmetic mean roughness Ra of a region in the outer peripheral surface (12c) of the straight trunk portion (12) which region is in a vicinity of the other end (10b), is smaller than an arithmetic mean roughness Ra of a region in the outer peripheral surface (12b) of the straight trunk portion (12) which region is in a vicinity of the inclined portion (11).
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| JP2836039 | Invention: Impedance device |
Inventors:
Hitomi Ochiai
Application Number:
JP2020509394A
Publication Date:
September 01, 2021
Filing Date:
April 01, 2019
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
H01F3/08; G06F3/03; G06F3/046; H01F1/34; H01F7/06
Foreign References:
| WO2017183526A1 | ||||
| WO2018225719A1 |
Attorney, Agent or Firm:
Keiichiro Saikyo