Coil component and method of stamping iron core used therefor

A coil component comprising:

• a coil bobbin having opposite ends each having a flange;
• an electrical winding wound on said coil bobbin;
• an I-shaped laminate iron core having first and second triangular-shaped ends having at opposite sides thereof tapered surfaces;
• a pair of one-piece C-shaped laminate iron cores each having first and second ends having tapered surfaces mated respectively in direct surface-to-surface contact with the tapered surfaces of the triangular-shaped ends of said I-shaped core, said pair of C-shaped cores being combined with said I-shaped core, said I-shaped core being positioned as a center magnetic leg incorporated in a center part of said winding, and said pair of C-shaped cores being opposite side magnetic legs disposed outside said winding and on opposite sides of said winding;
• and
• a pair of insulation sheets respectively interposed between inner surfaces of said C-shaped cores and an outer surface of said winding, the inner surfaces of said pair of C-shaped cores pressing said insulation sheets against the outer surface of said winding, wherein any part of said winding extending beyond an outer edge of said flange is flattened by contact with one of said insulation sheets.