Patent ID: 8922319

Claim:
A reactor including: a molded coil in which two coils electrically connected in series are arranged in parallel and integrally molded with resin covering a radial outside of the coils; and two U-shaped cores each having core insertion portions on both sides, the core insertion portions of the cores being inserted in the coils from either sides of the coils in a coil axial direction to face each other, and the cores being joined in a track-like form by interposing gap elements between them to form a core assembly, wherein the molded coil has a substantially hexahedral shape, each of the cores includes a core outer portion joining, outside the coils, both the core insertion portions inserted in the coils, a magnetic-metal containing resin layer made of magnetic-metal containing resin consisting of binder resin and magnetic metal powder mixed therein is formed on outer surfaces of the core outer portions, the molded coil includes a fastening retaining part for holding and fixing the reactor to a cabinet with a fastening member so that the cabinet supports the reactor, the fastening retaining part is made of metal plate having a spring characteristic bent in an angular-U-shape, and each end portion of the bent parts is further folded at 90° outside, the molded coil is held apart from the cabinet by the fastening member and the fastening-member retaining part, and the gap elements are placed inside U-like shape of each of the U-shaped cores wherein the fastening retaining part is provided at a center of the molded coil in a thickness direction along the coil axial direction of the coils, and wherein the fastening retaining part extends to stride on the molded coil in a radial direction of the coils.