Patent ID: 9147516
Filing Date: 2015-09-29
Classification: H01F,Y10T

Abstract:
1. A reactor comprising: an annular core consisting of a first divisional core and a second divisional core connected to the first divisional core, the first divisional core being provided with a first yoke-side core member and leg-portion-side core members, the second divisional core being provided with a second yoke-side core member; and a coil wound around the annular core, the first divisional core including a first yoke, a pair of first parallel leg portions and hollow core mounting portions extending from each of the first parallel leg portions, the first yoke, the first parallel leg portions and the hollow core mounting portions being formed integrally by a resin as a continuous part and the first yoke-side core member being embedded by molding inside of the first yoke and the first parallel leg portions, while all of the leg-portion-side core members being inserted into the hollow core mounting portions, the second divisional core including a second yoke and a pair of second parallel leg portions connected to the second yoke, the second yoke and the second parallel leg portions being formed integrally by the resin and the second yoke core member being embedded by molding inside of the second yoke and the second parallel leg portions; a casing with a closed bottom and sides extending upward from the bottom and an open top configured for retaining therein the annular core and the coil wound around the first and second leg portions and the hollow core mounting portions, wherein first opposite sides of the casing each facing to the first and second yokes have a height lower than the yokes, and second opposite sides of the casing facing the coil have a height higher than the coils, and a plurality of fasteners connect respectively the first and second divisional cores to the casing to directly retain the reactor in the casing, wherein the fasteners are respectively embedded at their base portions into upper portions of the first and the second yokes that are exposed from the casing and configured as bent and extending downward from the base portions to engage at their end portions with the upper ends of the first opposite sides of the casing.