REACTOR

WIPO Patent Application WO/2019/102843

A1

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 comprises an inside core piece and an outside core piece. The inside core piece has a prescribed magnetic circuit cross-sectional area and is arranged inside the winding part. The outside core piece includes: 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 and is exposed from the winding part. The relative permeability of the outside core piece is greater than the relative permeability of the inside core piece. The resin mold part covers the connection between the end surface of the inside core piece and the connection surface of the small area part and includes a thick part that is thicker than a part that covers the outer periphery of the inside core piece.

INABA KAZUHIRO (JP)

PCT/JP2018/041173

May 31, 2019

November 06, 2018

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AUTONETWORKS TECHNOLOGIES LTD (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)

H01F37/00; H01F27/24

JP2014120743A	2014-06-30
JP2011253982A	2011-12-15
JP2011199238A	2011-10-06

YAMANO Hiroshi et al. (JP)

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