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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/049803
Kind Code:
Provided is an inductor that has achieved size reduction while ensuring electrical insulation between a coil and a core. The inductor (1) is provided with a core (2), a bobbin (3), and an annular coil (4) wound around a center portion (2a) of the core (2) with the bobbin (3) disposed therebetween. The core (2) includes a central core (11) and a peripheral core (12). The central core (11) has a part protruding from the bobbin (3) in a central axis direction, and includes an extension portion (11a) extending radially outward from the part. The extension portion (11a) has a surface facing inward in the central axis direction, the surface contacting a surface of a flange portion (3b) of the bobbin (3) facing outward in the central axis direction. Thus, a rim portion (2b) of the peripheral core (12) and the flange portion (3b) of the bobbin (3) oppose each other with a predetermined gap therebetween, and the bobbin (3) is positioned in the central axis direction with respect to the peripheral core (12).

SAKAI, Kayo (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
SHIMAZU, Eiichirou (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
KANBE, Shougo (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
Application Number:
Publication Date:
March 14, 2019
Filing Date:
August 31, 2018
Export Citation:
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NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
H01F17/04; H01F27/32; H01F37/00
Foreign References:
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (Higobashi Nittai Bldg, 10-2 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
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