US 11,699,545 B2
Coil structure
Ge Li, Tokyo (JP); and Junpei Sawayama, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Dec. 21, 2020, as Appl. No. 17/128,331.
Claims priority of application No. 2019-232038 (JP), filed on Dec. 23, 2019.
Prior Publication US 2021/0193364 A1, Jun. 24, 2021
Int. Cl. H01F 27/32 (2006.01); H01F 27/26 (2006.01); H01F 27/28 (2006.01)
CPC H01F 27/263 (2013.01) [H01F 27/28 (2013.01); H01F 27/32 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A coil structure comprising:
a substrate including a coil conductor;
a first core disposed on one main surface side of the substrate;
a second core disposed on other main surface side of the substrate; and
an insulating member made of an insulating material, wherein the first core includes:
a main body part extending in a first direction along a main surface of the substrate;
a first foot part extending from the main body part to the second core through the substrate; and
a second foot part extending from the main body part to the second core through the substrate at a position at which the coil conductor is sandwiched between the second foot part and the first foot part in the first direction, and
the insulating member includes:
a bottom wall part interposed between at least the first foot part and the second core; and
a side wall part extending along at least either of the first foot part and the second foot part and interposed between either of the foot parts and the coil conductor.