US 12,068,102 B2
Coil component and electronic device
Makoto Shimizu, Takasaki (JP); and Tomoo Kashiwa, Takasaki (JP)
Assigned to TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed by TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed on Jul. 17, 2023, as Appl. No. 18/353,764.
Application 18/353,764 is a continuation of application No. 17/864,218, filed on Jul. 13, 2022, granted, now 11,749,450.
Application 17/864,218 is a continuation of application No. 16/654,989, filed on Oct. 16, 2019, granted, now 11,443,891.
Claims priority of application No. 2018-204288 (JP), filed on Oct. 30, 2018.
Prior Publication US 2023/0360842 A1, Nov. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H05K 1/18 (2006.01); H01F 27/06 (2006.01); H01F 27/24 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01)
CPC H01F 27/292 (2013.01) [H01F 27/06 (2013.01); H01F 27/24 (2013.01); H01F 27/2823 (2013.01); H05K 1/181 (2013.01); H01F 2027/065 (2013.01); H05K 2201/1003 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A coil component comprising:
a core part including:
a winding shaft; and
a flange part provided on an axial-direction end of the winding shaft, wherein the flange part has:
an exterior face on an opposite side of the winding shaft,
a pair of a first side face and a second side face that are adjoining the exterior face and located opposite to each other, and
first and second groove parts provided on the exterior face, which are isolated from each other or connected to each other on the exterior face, wherein the first and second groove parts extend to the first side face and the second side face, respectively, via a cut-out part provided on each of the first side face and the second side, wherein the first and second groove parts each have a planar surface perpendicular to the axial direction, wherein a thickness of the flange part measured at the planar surface in the axial direction is less than a thickness of the flange part measured at a surface of the exterior face, other than the planar surface, perpendicular to the axial direction;
a coil part including:
a winding part constituted by a conductor with an insulating film, which is wound around the winding shaft; and
a pair of lead parts that are portions of the conductor led out from the winding part; and
a pair of terminal parts formed on the exterior face of the flange part,
wherein one of the pair of lead parts is led in from the cut-out part on the first side face of the flange part and fitted inside the first groove part provided on the exterior face, and included in one of the pair of terminal parts,
another of the pair of lead parts is led in from the cut-out part on the second side face of the flange part and fitted inside the second groove part provided on the exterior face, and included in another of the pair of terminal parts,
a depth of each of the first and second groove parts is no greater than half of a thickness of the flange part,
a percentage of a thickness of the conductor relative to a height of the coil component is 10% or greater, and
a width of the first and second grooves on the exterior face is less than a width of the winding shaft in a width direction, wherein the width direction is a direction perpendicular to a length direction in which the first side face and the second side face face each other on a plane perpendicular to the axial direction of the winding shaft,
wherein the first and second groove parts are provided at positions where the first and second groove parts partially overlap the winding shaft as viewed toward the exterior face in the axial direction of the winding shaft, and wherein the first and second groove parts are provided in a manner fitting inside positions entirely overlapping the winding shaft in a width direction of the first and second groove parts as viewed toward the exterior face in the axial direction of the winding shaft.