Direct current sensor shielding top cover

The utility model relates to a direct current sensor shielding top cover, which is provided with a U-shaped conductive terminal button, an elbow connector and a cylindrical shell, the cylindrical shell comprises an outer layer shielding structure and an inner layer shielding structure, an outer layer top cover is arranged at the upper part of the outer layer shielding structure, and the elbow connector is arranged on the outer layer top cover; the inner-layer shielding structure comprises an inner-layer shielding shell groove and an inner-layer shielding side cover, a magnetic core fixing structure (30) is arranged on the lower portion of the inner-layer shielding shell groove, and a coil winding magnetic core is arranged on the magnetic core fixing structure. The acquisition error is reduced; according to the electromagnetic shielding principle and the circuit trend, a plurality of concave-convex interlocking structures are designed at a plurality of key parts in a layered manner, so that the electromagnetic