Patent ID: 7167069

Claim:
A coil bobbin made of a thermosetting resin, comprising a cylindrical drum for mounting thereon primary and secondary coils, a pair of flanges extending radially from both axial ends of the drum to intersect at right angles with the axial direction of the drum, and primary side and secondary side terminal bases respectively made at the same angular position of the flanges and having a first surface on outer side face of the flange where lead wires from the coils are led out and a second surface intersecting substantially at right angles with the first surface and provided with terminal pins for connecting thereto the lead wires, at least the secondary side terminal base further having projections made on a corner edge between the first and second surfaces at positions respectively close to each terminal pin so as to project continuously out of both of the first and second surfaces for catching thereon the lead wires led out of the first surface and onto the second surface to be connected to the terminal pins.