Patent ID: 8659381
Filing Date: 2014-02-25
Classification: H01F

Abstract:
1. A reactor, comprising: a coil formed with paired coil elements that are made of a spirally wound wire, the coil elements being coupled to each other in a paralleled state; internal core portions that are fitted into the paired coil elements to structure a part of an annular core; exposed core portions that are exposed outside the coil elements to couple the internal core portions to each other, to thereby form a rest of the annular core; and an external resin portion that covers at least a part of an assembled product made up of the coil and the core, wherein in each of the exposed core portions, a cut-out corner portion is provided to at least a part of a joining portion of an inner end face facing an end face of the coil and an adjacent face that is continuous to the inner end face, the adjacent face of each of the exposed core portions is a side face adjacent to the inner end face, the cut-out corner portion is structured with a curved surface, an arc-radius of the surface is 1 mm or more and 10 mm or less.