| 摘要 |
PURPOSE:To eliminate the inclination of a plurality of coil strands even if a twisting force is applied by aligning in parallel the coil strands of trapezoidal sectional shape alternately so that the upper bottom of the trapezoidal shape is disposed in a reverse direction. CONSTITUTION:Coil sheets 3 for a coreless armature are aligned in parallel so that a plurality of coil strands 4 of trapezoidal sectional shape are alternately disposed at the upper bottom is arranged in a reverse direction. Since thus constructed, the inclination of the strands 4 does not occur even if forces are applied as designated by arrows to both side faces of the coil sheet 3 at the front and back surfaces of the sheet 3, and the pitch of the strands 4 can be accurately maintained. |
