US 12,381,030 B2
Coil component
Tomoyuki Wada, Nagaokakyo (JP); Kazuto Shibuya, Nagaokakyo (JP); Seiya Yuki, Nagaokakyo (JP); and Yuki Kanbe, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Oct. 12, 2021, as Appl. No. 17/499,801.
Claims priority of application No. 2020-178868 (JP), filed on Oct. 26, 2020.
Prior Publication US 2022/0130597 A1, Apr. 28, 2022
Int. Cl. H01F 17/04 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01)
CPC H01F 27/2828 (2013.01) [H01F 17/045 (2013.01); H01F 27/292 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A coil component comprising:
a core having a columnar winding core portion and a flange at an end of the winding core portion in an axial direction that is a direction extending along an axis of the winding core portion;
a terminal electrode at an end surface of the flange, the end surface being positioned closer to a first end of the coil component in a first direction than a second end of the coil component in the first direction, the first direction being a direction extending perpendicular to the axial direction; and
a wire wound around the winding core portion and having one end portion coupled to the terminal electrode, wherein
the flange protrudes so as to be closer than the winding core portion to the first end of the coil component in the first direction,
a curved surface and an inclined surface are at a boundary between a surface of the flange and a peripheral surface of the winding core portion that is positioned closer to the first end of the coil component in the first direction than the second end of the coil component in the first direction, the curved surface being arcuately recessed outward in the axial direction and also toward the second end of the coil component in the first direction, and the inclined surface having a curvature smaller than that of the curved surface,
the inclined surface is disposed where the wire intersects the boundary as viewed in the first direction,
a first distance along a second direction from the inclined surface to the boundary is greater than a second distance along the second direction from the inclined surface to the boundary, the first distance being a distance along the second direction between a first end of the boundary and a distal end of the inclined surface closest to the first end of the boundary, the second distance being a distance along the second direction between a second end of the boundary and a distal end of the inclined surface closest to the second end of the boundary, and
the second direction is a direction that orthogonally intersects any of the axial direction and the first direction.