US 12,014,858 B2
Reactor
Kazuhiro Inaba, Yokkaichi (JP)
Assigned to AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
Appl. No. 17/289,839
Filed by AutoNetworks Technologies, Ltd., Yokkaichi (JP); Sumitomo Wiring Systems, Ltd., Yokkaichi (JP); and Sumitomo Electric Industries, Ltd., Osaka (JP)
PCT Filed Oct. 9, 2019, PCT No. PCT/JP2019/039924
§ 371(c)(1), (2) Date Apr. 29, 2021,
PCT Pub. No. WO2020/090397, PCT Pub. Date May 7, 2020.
Claims priority of application No. 2018-203073 (JP), filed on Oct. 29, 2018.
Prior Publication US 2021/0407725 A1, Dec. 30, 2021
Int. Cl. H01F 17/04 (2006.01); H01F 3/08 (2006.01); H01F 3/14 (2006.01); H01F 27/255 (2006.01); H01F 27/28 (2006.01); H01F 37/00 (2006.01); H01F 41/12 (2006.01)
CPC H01F 27/255 (2013.01) [H01F 3/08 (2013.01); H01F 3/14 (2013.01); H01F 27/28 (2013.01); H01F 37/00 (2013.01); H01F 41/12 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A reactor comprising:
a coil;
a magnetic core; and
a resin molded portion covering at least a portion of an outer circumferential surface of the magnetic core;
wherein the coil includes
two winding portions and a linking portion for connecting the two winding portions to each other,
the magnetic core includes
inner core portions respectively disposed inside the winding portions, and outer core portions disposed outside the two winding portions,
at least one of the two outer core portions includes
a composite core whose height direction is orthogonal to an axial direction of the winding portions and a direction in which the two winding portions are arranged side-by-side, and in which a compact made of a composite material containing magnetic powder and resin and a powder compact made of magnetic powder are stacked in the height direction,
the linking portion protrudes outward in the axial direction and upward in the height direction relative to end portions of the inner core portions, on one end side in the axial direction of the two winding portions,
the composite core
is disposed on the one end side in the axial direction of the two winding portions,
has a portion that protrudes upward in the height direction relative to a virtual surface obtained by extending an outer circumferential surface of the inner core portions, and
includes a first composite core in which the compact made of the composite material is disposed on an upper side in the height direction, and the powder compact is stacked on a lower side in the height direction, wherein the powder compact extends from an outer surface of the at least one of the two outer core portions to the inner core portion, and
the resin molded portion includes a first outer resin portion covering the first composite core.