US 12,119,160 B2
Coil component
Natsuko Sato, Tokyo (JP); Takayuki Arai, Tokyo (JP); Atsuko Kasahara, Tokyo (JP); and Tomoo Kashiwa, Tokyo (JP)
Assigned to TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed by TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed on Mar. 30, 2021, as Appl. No. 17/217,277.
Claims priority of application No. 2020-062176 (JP), filed on Mar. 31, 2020.
Prior Publication US 2021/0304954 A1, Sep. 30, 2021
Int. Cl. H01F 27/24 (2006.01); H01F 27/28 (2006.01); H01F 41/04 (2006.01)
CPC H01F 27/2804 (2013.01) [H01F 27/24 (2013.01); H01F 41/043 (2013.01); H01F 2027/2809 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A coil component comprising:
an insulating base body including a magnetic body portion and a magnetic gap portion, the magnetic body portion being made of a magnetic material, and the magnetic gap portion being made of a low-permeability material having a lower relative permeability than the magnetic material; and
a coil conductor having a winding portion extending around a coil axis, the coil conductor being arranged in the base body, the winding portion including a plurality of conductor patterns arranged along the coil axis, the plurality of conductor patterns including one or two first conductor patterns disposed at a top edge of the winding portion, one or two second conductor patterns disposed at a bottom edge of the winding portion, and one or more third conductor patterns disposed between the one or two first conductor patterns and the one or two second conductor patterns,
wherein the magnetic gap portion is shaped like a ring when seen in a direction along the coil axis and arranged within the winding portion such that an outer peripheral surface of the magnetic gap portion is in contact with an inner peripheral surface of at least one of: (i) the one or two first conductor patterns or (ii) the one or two second conductor patterns, the insulating base body including no magnetic gap portion in contact with the one or more third conductor patterns, and
wherein the magnetic body portion includes:
a first region positioned within the winding portion;
a second region positioned opposite the first region with respect to the magnetic gap portion in the direction along the coil axis; and
a third region arranged within a through hole defined by an inner peripheral surface of the magnetic gap portion such that the third region is in contact with the inner peripheral surface of the magnetic gap portion, the third region connecting together the first and second regions.