MAIN MOTOR FOR VEHICLE

PURPOSE:To readily machine the bore surface of a yoke by disposing a main pole on an outer frame directly in contact, and disposing a main pole core block between the main pole core and the frame. CONSTITUTION:Four main pole coils 10 an interpole coils 11 are alternately disposed on the inner wall of the outer frame 5 or a main motor 4 around an armature 9. A main pole coil 32 is engaged with the main pole core 1 of the coils 10, and a main pole core block 36 having the same plane surface as the mounting surface of the frame 5 makes contact with the main pole core 31. Thus, since the projection of the main pole core mount of the yoke can be eliminated, the main pole core block can be formed peculiarly and the main pole core and coil mounting surfaces of the yoke can be formed in the same plane, mechanical works can be very facilitated.