Patent ID: 8723505

Claim:
A current sensor structure adapted to accommodate a substantially ring-shaped magnetic core comprising layers of magnetic plates in an insulating case, the magnetic core being secured to the case using a molding compound, the current sensor structure comprising: (a) a plurality of projections provided either on a wall portion of the case in a magnetic plate's thickness direction or on a surface of the magnetic core in the magnetic plate's thickness direction, the projections protruding in the magnetic plate's thickness direction such that the surface of the magnetic core is supported by the wall portion via the projections; and (b) a gap provided between the surface of the magnetic core and the wall portion of the case, the gap having a same height as that of the projections, and being adapted to be filled with the molding compound such that dilative and contractive deformations of the case in a direction orthogonal to the magnetic plate's thickness direction is absorbed by the molding compound within the gap and thereby a stress is prevented from acting upon the magnetic core.