Stepping motor

A stepping motor comprising:

• a rotor assembly comprising a shaft and magnets sleeved outside the shaft, along a circumferential direction of the shaft for forming a plurality of first magnetic poles and a plurality of second magnetic poles;
• a plurality of stator assemblies sleeved outside the rotor assembly and sequentially stacked and arranged along an axial direction of the rotor assembly, each of the stator assembly comprising a fixed claw pole wound on the periphery of the rotor assembly and a coil sheathed on the fixed claw pole;
• wherein the fixed claw pole comprises a first claw pole part and a second claw pole part which are oppositely arranged and mutually matched;
• wherein
• the first claw pole part comprises a first base sleeved on the shaft and first pole claws bending and extending from an edge of the base along the axial direction of the shaft towards the second claw pole part, and the first pole claws are distributed at intervals along the circumferential direction of the first base;
• the second claw pole part comprises a second base sleeved on the shaft and second pole claws bending and extending from the edge of the base along the axial direction of the shaft towards the first base, and the second pole claws are distributed at intervals along the axial direction of the second base;
• the first pole claws and the second pole claws extend in a staggered manner, each first pole claw is positioned between two adjacent second pole claws, and the first pole claw and the second pole claw form a pole claw ring;
• the coil is sleeved on the periphery of the pole claw ring;
• and
• the polarities of the first pole claw and the second pole claw are opposite, and the polarity of the pole claw ring is set corresponding to the polarity of the magnet.