| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for improving strength of jointing resin filled in a gap and a core while restraining an eddy current in a reactor having a split core.SOLUTION: A reactor 100 disclosed in this specification comprises a core and a coil 8. The core is split into at least two partial cores 2a, 2b. At least the two partial cores 2a, 2b are opposed to each other across a gap, and end faces of the partial cores 2a, 2b faced to the gap are coated with resin 42. The coil 8 is wound around the core. Plural dot-like bumps, or linear grooves not crossing with the other grooves are formed on the end faces of the partial cores 2a, 2b. By forming the plural bumps or grooves, the resin 42 enters into the bumps or grooves, so as to improve strength of jointing the resin 42 and the end faces of the metallic partial cores 2a, 2b. Even when the bumps or grooves are conducted, a conduction face is limited to a dot-like or linear range, and therefore, an eddy current can be restrained. |
