| 摘要 |
PURPOSE:To simply perform a spot welding, to curtail the number of parts and to simplify the assembly process by bringing a 1st electrode into contact with the bottom part outer face of a bell, bringing a 2nd electrode into contact with one part of the opening part side of the bell of a yoke and performing a spot welding. CONSTITUTION:A coil 2 is fixed inside the yoke 1 formed in U shape and a wooden bell hammer 3 is fixed on the rise part 1a rising integrally from the york 1. The dowel 1b for spot welding is formed on the yoke 1. The dowel 1 is pressed to the bell 6 with adequate intensity and the 1st electrode 7 for spot welding is brought into contact with the external part of the bell 6 bottom face. A 2nd electrode 8 is brought into contact with one part of the opening part side of the bell 6 of the yoke 1. A current is passed via the electrode 7, bell 6, dowel 1b, yoke 1 and electrode 8 by passing the current between the electrodes 7, 8 in this state and the dowel 1b is spot-welded to the bell 6.
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