Patent ID: 8730000

Claim:
A reactor comprising: a ring-shaped molded core; and a coil wound around the ring-shaped molded core, wherein the ring-shaped molded core comprises divided cores including left and right leg portions and a yoke portion connecting the leg portions and formed by molding a yoke portion side core material within a resin, that is subsequently hardened; left and right end surfaces of the yoke portion side core material molded within the resin are respectively exposed to the left and right leg portions of the divided core, the left and right leg portions of the divided core are formed integrally from a resin molded to an outer periphery of the yoke portion side core material, and respectively include tubular core mounting portions extending from respective outer peripheries of the end surfaces of the yoke portion side core material, an I-shaped leg portion side core material and a spacer are inserted into the tubular core mounting portions formed in the left and right leg portions such that the spacer is sandwiched between the end surface of the yoke portion side core material molded within the resin and an end surface of the leg portion side core material, and respective end portions of the core mounting portions of the two divided cores are abutted and integrated with each other to form a ring-shaped molded core.