| 摘要 |
PURPOSE:To simplify the manufacturing cost and to reduce the weight of a unit by disposing a pair of cores in a mold, filling and solidifying a stationary material, and mutually coupling the cores by the material in a magnetically shielded state. CONSTITUTION:A core is formed by punching a thin plate of silicon steel by pressing, core plates are laminated to form cores 4, 5. Then, the cores 4, 5 are disposed at the prescribed interval in a mold, molten aluminum alloy is press- fitted into the mold, solidified, and a core unit 21 is formed in so that the cores 4, 5 are coupled in the magnetically shielded state by an aluminum die cast 20 thus formed. |
