PURPOSE: To simplify the assembly of stators by providing ring like coil storage space between vertical spacers laminated in cylindrical shape.

CONSTITUTION: In a spacer cylinder body, plural ring like spacers 3, 4a-4w, 5 are laminated in cylindrical shape, and ring like coil storage space is provided between the spacers vertically in contact. The coil storage space is provided with m-number of electric coil lead 10U, 10V, 10W of such constitution that the respective stators formed of plural number (m×n) of electric coils 7a-7h, 8a-8h, 9a-9h are electrically continuous in plural number (n) alternate by a- number (electric coil a≥1) in cylindrical laminated order. The coil storage space is also provided with a rod 13 passing a common terminal 11N, the other electrically-separated terminals 11U, 11V, 11W of the electric coil lead and the cylinder space of the stators, with at least the outer peripheral surface of this rod 13 formed of an electic conductor and with at least the inside of the outer peripheral surface formed of a magnetic conductor. With this constitution, the assembly of the stators is simplified.