Coil-embedded dust core
View Patent ↗A coil-embedded dust core of the present invention is provided with a molded coil component including a coil main body having a structure in which a flat type conductor wire is wound edgewise, one end side terminal portion disposed by being lead in the thickness direction of the coil main body, the other end side terminal portion, one end side leading electrode portion disposed by extending the one end side terminal portion, and the other end side leading electrode portion disposed by extending the other end side terminal portion; and a dust core composed of a soft magnetic alloy powder disposed covering the coil main body, the one end side terminal portion, and the other end side terminal portion of the molded coil component.
1. A coil-embedded dust core comprising:
a molded coil component including a coil main body having an edgewise winding structure in which a flat type conductor wire having a flat portion is wound in such a way that the flat portion is arranged substantially perpendicularly to a winding axis, wherein one end side terminal portion is disposed by leading an end portion of the flat type conductor wire located on the one end side of the coil main body in parallel to the winding axis of the coil main body, the other end side terminal portion disposed by leading an end portion of the flat type conductor wire located on the other end side of the coil main body in parallel to the winding axis of the coil main body, wherein one end side leading electrode portion is disposed by extending the one end side terminal portion, and the other end side leading electrode portion is disposed by extending the other end side terminal portion;
a dust core composed of a soft magnetic alloy powder compact disposed covering the coil main body, the one end side terminal portion, and the other end side terminal portion of the molded coil component;
wherein the one end side terminal portion and the other end side terminal portion are extended to one surface or the other surface of the dust core, the surfaces being perpendicular to the winding axis direction of the coil main body; and
wherein the one end side leading electrode portion that is extended from the one end side terminal portion lead to the one surface or the other surface of the dust core is extended along the dust core surface to a corner portion side of the dust core, and is bent so that the one end side leading electrode portion is exposed.
2. The coil-embedded dust core according to claim 1 , wherein the coil main body is low-profile, and the dust core covering the coil main body is low-profile.
3. The coil-embedded dust core according to claim 1 , wherein the other end side leading electrode portion that is extended from the other end side terminal portion leads to the one surface or the other surface of the dust core is extended along the dust core surface to a corner portion side of the dust core, and is bent so that the other end side leading electrode portion is exposed.
4. The coil-embedded dust core according to claim 1 , wherein both the one end side terminal portion and the other end side terminal portion are extended to one surface of the dust core, the other end side terminal portion being kept a distance from an outer perimeter portion of the coil main body in the inside of the dust core to the one surface, and a part of the soft magnetic alloy powder compact is filled in between the outer perimeter portion of the coil main body and the other end side terminal portion.