Patent ID: 11862376
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A core for holding a wire wound therearound to form an inductor component, the core comprising:
a winding core portion extending along a longitudinal axis of the core, wherein
the winding core portion has a polygonal cross section that orthogonally intersects the longitudinal axis of the core, the polygonal cross section having four or more corner portions,
the winding core portion includes the four or more corner portions, such that the four or more corner portions have an interior angle of from 90 degrees to 120 degrees on the polygonal cross section,
at least one of the four or more corner portions has a first round surface and a second round surface that are formed so as to protrude outward, and
the first round surface and the second round surface are arranged adjacently to each other in a circumferential direction of the winding core portion,
wherein a first flat surface extends from the first round surface toward at least a second one of the four or more corner portions; and a second flat surface extends from the second round surface toward at least a third one of the four or more corner portions,
at the at least one of the four or more corner portions, when virtual extensions of adjacent sides intersect at a virtual point of intersection on the polygonal cross section, a distance from the virtual point of intersection to one of the adjacent sides is different from a distance from the virtual point of intersection to the other one of the adjacent sides, and
at the at least one of the four or more corner portions, when virtual extensions of adjacent sides intersect at a virtual point of intersection on the polygonal cross section, the inductor component satisfies (W·T)0.5≤2D on the polygonal cross section, where W is the distance from the virtual point of intersection to one of the adjacent sides, T is the distance from the virtual point of intersection to the other one of the adjacent sides, and D is the diameter of the wire.