Magnetic pole piece structure for radial coiling stator

The invention relates to an iron pole piece structure for a radial winding stator. The iron pole piece comprises a shaft hub, and a plurality of poles, wherein the center of the shaft hub is provided with a hole, each pole is formed integrally with the shaft hub, and each pole extends in the radial direction around the shaft hub radially and expands tangentially at the tail end to form a pole shoe; and the iron pole piece is characterized in that the ratio of an angle of a single pole shoe to a pole distance angle of two adjacent poles is between 0.86 and 0.95. The iron pole piece structure uses the optimized ratio alpha to define the shape of the iron pole piece to increase an overlapping area of inductance and torque, can reduce cogging torque of a motor, and strengthens self-starting capability and shortens torque ripple of the motor, so as to promote overall performance of the motor.