Coil component, powder-compacted inductor and winding method for coil component

摘要

A coil component includes an air-core winding wire portion wound by a wire with a plurality of wound layers by alignment winding, a spiral shaped wound portion in which the wire wound in a spiral shape from an inner edge of an end surface toward an outer edge thereof along the end surface while in contact with the end surface on one side in the axis direction of the winding wire portion, a first lead portion extended and extracted outward from a winding first end point of the spiral shaped wound portion, and a second lead portion extended and extracted outward from a winding second end point at the outer circumference of the winding wire portion.

主权项

1. A powder-compacted inductor, comprising:
a powder-compacted body that is in a cubic shape having first and second side surfaces and a bottom surface continuously formed with the first and second side surfaces, the first and second side surfaces being opposite to each other; a first terminal that is formed along the first side surface and that continuously extends to the bottom surface so as to be along the bottom surface; a second terminal that is formed along the second side surface and that continuously extends to the bottom surface so as to be along the bottom surface; and a coil component that is embedded in the powder-compacted body, the coil component including
a winding wire portion in which a wire having electrical conductivity is wound into a plurality of wound layers;a spiral shaped wound portion in which the wire extends from a winding start point at an inner circumference of the winding wire portion and in which the wire is wound in a spiral shape from an inner edge of an end surface toward an outer edge of the end surface along the end surface while the wire is in contact with the end surface, the end surface being located at one side of the winding wire portion in an axis direction of the winding wire portion, the axis direction being perpendicular to the bottoms surface of the powder-compacted body;a first lead extending outwardly from a winding first end point of the spiral shaped wound portion; anda second lead extending outwardly from a winding second end point at an outer circumference of the winding wire portion, wherein the first and second leads are both positioned at the one side of the winding portion in the axis direction, first and second lead roots of the first and second leads are embedded in the powder-compacted body, respectively, first and second lead ends of the first and second leads extend outwardly from the first and second side surfaces of the powder-compacted body, respectively, and the first and second lead ends are connected to first and second terminal ends of the first and second terminals outside of the first and second side surfaces of the powder-compacted body, respectively.