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Patent Searching and Data


Title:
INDUCTOR
Document Type and Number:
WIPO Patent Application WO/2018/088404
Kind Code:
A1
Abstract:
Provided is an inductor with which miniaturization can be achieved while ensuring electric insulation between a coil and a core. The inductor (1) is provided with a core (2), a bobbin (3), and an annular coil (4). The core (2) includes a core portion (2a) extending in a central axis (O) direction, two guard portions (2b) expanding from both ends in the central axis (O) direction of the core portion (2a) toward respective outer diameter sides, and a side wall portion (2c) connecting the outer diameter ends of the two guard portions (2b). The bobbin (3) includes a tube portion (3a) extending in the central axis (O) direction and fitting onto the outer periphery of the core portion (2a). The coil (4) is wound onto the core portion (2a) with the tube portion (3a) interposed therebetween. The bobbin (3) further includes a flange portion extending from both ends of the tube portion (3a) and separating the guard portions (2b) and the coil (4) from each other. The flange portion (3b) has on a surface thereof opposing at least one of the guard portions (2b) a positioning portion (3c) which is positioned further toward the inner diameter side than the outer diameter end of the flange portion (3b), and which protrudes on the guard portion (2b) side, with a distal end abutting the guard portion (2b).

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Inventors:
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)
MIYAZAKI, Shinji (101 Aza Katsutaba, Oaza Kanieshinden, Kanie-cho, Ama-gu, Aichi 44, 〒4970044, JP)
Application Number:
JP2017/040140
Publication Date:
May 17, 2018
Filing Date:
November 07, 2017
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
H01F27/32; H01F17/04; H01F27/06; H01F37/00
Foreign References:
JPS62204309U1987-12-26
JPH03128921U1991-12-25
JP2001267154A2001-09-28
JP2016134399A2016-07-25
JP2003188030A2003-07-04
JP2014220421A2014-11-20
JP2003224012A2003-08-08
JPS5972116A1984-04-24
JP2000114062A2000-04-21
JP2009141117A2009-06-25
JP2017092113A2017-05-25
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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