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Document Type and Number:
WIPO Patent Application WO/2019/102842
Kind Code:
A reactor that comprises a coil, a magnetic core, and a resin mold part. The coil has a winding part. The magnetic core is arranged inside and outside the winding part and forms a closed magnetic circuit. The resin mold part: includes an inside resin part that is interposed between the winding part and the magnetic core; and does not cover an outer peripheral surface of the winding part. The magnetic core includes: an inside core piece that is arranged inside the winding part; and an outside core piece that is exposed from the winding part. The outside core piece comprises: a small area part that includes a connection surface that is connected to an end surface of the inside core piece and has a smaller area than the area of the end surface; and a large area part that has a larger magnetic circuit cross-sectional area than the area of the end surface of the inside core piece. Seen in the axial direction of the winding part from an outside end surface of the outside core piece when the outside core piece has been assembled thereon, the end surface of the inside core piece comprises: an overlap region that overlaps the small area part; and a no-overlap region that does not overlap the small area part or the large area part. The resin mold part includes an end surface cover part that covers the no-overlap region.

INABA Kazuhiro (1-14, Nishisuehiro-cho, Yokkaichi-sh, Mie 03, 〒5108503, JP)
Application Number:
Publication Date:
May 31, 2019
Filing Date:
November 06, 2018
Export Citation:
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AUTONETWORKS TECHNOLOGIES,LTD. (1-14, Nishisuehiro-cho Yokkaichi-sh, Mie 03, 〒5108503, JP)
SUMITOMO WIRING SYSTEMS,LTD. (1-14, Nishisuehiro-cho Yokkaichi-sh, Mie 03, 〒5108503, JP)
SUMITOMO ELECTRIC INDUSTRIES, LTD. (5-33, Kitahama 4-chome Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
International Classes:
H01F37/00; H01F27/24
Foreign References:
Attorney, Agent or Firm:
YAMANO Hiroshi et al. (KEIMEI PATENT OFFICE, 10F ASTRO Shin Osaka 2 Bldg., 1-3, Nishinakajima 6-chome, Yodogawa-ku, Osaka-sh, Osaka 11, 〒5320011, JP)
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