Patent ID: 8730001
Filing Date: 2014-05-20
Classification: H01F

Abstract:
1. A reactor including a coil and a core, the coil being formed by helically winding a wire, the core including an internal core portion and a couple core portion, the internal core portion being disposed inside the coil and forming a part of a closed magnetic path, the couple core portion being joined to the internal core portion and forming a remaining part of the closed magnetic path, the reactor being characterized by comprising: a resin portion including an internal resin portion, the internal resin portion including a region that is interposed between the coil and the internal core portion; and a cushioning member that is interposed between the resin portion in the region and the internal core portion and that reduces a stress that acts on the resin portion in the region, wherein a material of the cushioning member has a Young's modulus that is smaller than that of a resin material of the resin portion, wherein the internal resin portion covers at least a part of the coil and retains a shape of the coil, wherein the coil is covered by the internal resin portion and the internal resin portion retains the coil in a compressed state, wherein the resin portion further includes an external resin portion that covers at least a part of an outer periphery of an assembly including the core and the coil provided with the internal resin portion; a positioning portion that is integrally formed with the internal resin portion, that is used to position the assembly with respect to a mold when forming the external resin portion by using the mold, and that is not covered by the external resin portion, wherein the coil includes a couple portion that couples a pair of coil elements to each other, wherein the couple portion protrudes further than turn-formed faces of the pair of coil elements, and wherein the positioning portion is formed in the internal resin portion at a position at which the internal resin portion covers the couple portion.