| 摘要 |
PURPOSE:To facilitate the preparation of a device and enhance the precision and heat resistance, by organizing a main retaining disc body for rotor coils with a ceramic calcined member, and by forming armature coils to be fixed on the member. CONSTITUTION:A pole 10 made of doughnut-shaped ferritic permanent magnet substance is fitted on the inner peripheral surface of a frame 8 with epoxy resin bonding agent or the like. A disc 14 is organized with calcined soft ferritic magnetic powder, and on the wall surface, the armature coils 15 of printed coils are fixed. Otherwise, so far as the component of the disc 14 is concerned, a normal ceramic disk is acceptable, and so far as the printed coils are concerned, the upper and lower coils 15a, 15b may be connected to through-hole plating 19 formed on the disc 14. |
