| 摘要 |
PURPOSE:To improve the efficiency of a DC motor and to shorten the axial length of the motor by forming a single coil substantially in a sector shape to form an armature coil, thereby increasing the magnetic flux. CONSTITUTION:A sector-shaped single coil is formed by coupling two points on the same circumference to the point which is disposed opposite through a central point to the two points on a line which couples the intermediate point between the two points and the central point of the circumference, and a plurality of single coils are disposed so as to be displaced at the prescribed angle with the central point of the circumference as a center, thereby forming a disc-shaped coil 3. A magnet 8 is disposed through an axial air gap at the position except the center and the periphery of the coil 3. A yoke 5 which is opposite to the magnet 8 is provided through the coil 3. |
