US 12,136,511 B2
Coil component and its manufacturing method
Yugo Asai, Tokyo (JP); Aoi Tokiwa, Tokyo (JP); and Daisuke Urabe, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK Corporation, Tokyo (JP)
Filed on Mar. 2, 2021, as Appl. No. 17/189,854.
Claims priority of application No. 2020-035712 (JP), filed on Mar. 3, 2020.
Prior Publication US 2021/0280357 A1, Sep. 9, 2021
Int. Cl. H01F 27/29 (2006.01); H01F 27/26 (2006.01); H01F 27/28 (2006.01); H01F 41/064 (2016.01)
CPC H01F 27/2823 (2013.01) [H01F 27/26 (2013.01); H01F 27/29 (2013.01); H01F 41/064 (2016.01)] 8 Claims
OG exemplary drawing
 
1. A coil component comprising:
a drum-shaped core including a flange part and a winding core part;
a terminal fitting fixed to the flange part; and
a wire wound around the winding core part and having an end portion connected to the terminal fitting,
wherein the flange part has an outer surface positioned on a side opposite to the winding core part,
wherein the terminal fitting has i) a positioning part for positioning the wire, ii) a welding part having a tab shape bent at a first bending position so that the welding part positions the wire by sandwiching the wire in an axial direction of the winding core part, and iii) a weld bead formed as a result of welding between the welding part of the terminal fitting and the end portion of the wire,
wherein the positioning part and the weld bead are both positioned on the outer surface of the flange part,
wherein the weld bead has a protruding part that does not overlap the flange part,
wherein the positioning part has a tab shape bent at a second bending position so that the positioning part positions the wire at the second bending position by sandwiching the wire,
wherein a part of the wire located between the positioning part and the welding part extends in a first direction perpendicular to the axial direction,
wherein the first bending position and the second bending position are different in a second direction perpendicular to the axial direction and the first direction such that the second bending position overlaps with the welding part when viewed from the first direction and that the first bending position does not overlap with the positioning part when viewed from the first direction, and
wherein the weld bead overlaps with the second bending position when viewed from the first direction without overlapping with the first bending position when viewed from the first direction.