| 摘要 |
PURPOSE:To eliminate salck and wrinkles at a lead wire part and to prevent the occurrence of short circuits between turns, by forming slits at the bonding part between a metal sheet for the lead wire and a metal sheet for windings, and performing cold welding of both sheets in the vicinity of the slits. CONSTITUTION:Slits 21 are formed for a metal sheet for a lead wire, which is bonded to a metal sheet 1 for the lead wire. The metal sheet 20 for the lead wire and a metal sheet 3 for a winding are connected in the vicinity of the slits 21 by cold welding. Therefore, when the metal sheet 20 for the lead wire and the metal sheet 3 for the winding undergo the cold welding, the slack, which is yielded when the metal sheet 2 for the lead wire is extened, is absorbed by the slits 21. Therefore, wrinkles are not yielded. Since the slack or the wrinkles yielded by the cold welding method can be absorbed, a simple pressure welding mold 22, by which only a part of the metal sheets is compressed, can be used. Thus, the insulating property of the lead wire part is largely improved, and short circuits between turns is prevented.
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