Patent ID: 6862800

Claim:
A method for connecting a coated lead wire to a terminal of a coil bobbin, comprising; placing a pair of electrodes having heating portions opposite to each other; entwining said coated lead wire around said terminal of said coil bobbin; placing said terminal entwined with said coated lead wire against a solder; putting said terminal entwined with said coated lead wire placed against said solder into between said electrodes; directing a blow of inert gas toward said terminal entwined with said coated lead wire placed against said solder between said electrodes; supplying electric currents to said electrodes to heat said heating portions for melting said solder while exerting pressure to said terminal entwined with said coated lead wire between said electrodes; and releasing the pressure exerted to the terminal entwined with said lead wire after a lapse of a prescribed period of time from commencement of generating heat at said heating portions of said electrodes and exerting pressure to said terminal entwined with said coated lead wire.