| 摘要 |
PURPOSE:To reduce the securing cost and to improve the reliability by forming a recess on the outer peripheral edge of the securing surfaces of inner yokes, deforming inwardly the outer peripheral edge of the outer yoke toward the recess, and securing it. CONSTITUTION:A recess 16 is previously formed on the outer peripheral edge of inner yokes 2. Then, outer yokes 1 are engaged. This engaging is performed so that many pole pieces of the yokes 2 are disposed in a zigzag state with many pole pieces of the corresponding yokes 2, the outer periphery of the yokes 1 is completely coated on the outer periphery of the yokes 2, and the ends of the yokes 1 are bonded to each other. The outer peripheral edges of the yokes 1 are pressed toward the recess 16 by a pressing jig 17 projected at the end outward to deform the outer peripheral edge of the yokes 1. |
