Heat -radiating structure of motor

The utility model discloses a heat -radiating structure of motor, including casing, pivot, stator module and rotor subassembly, the rotor subassembly is installed in the pivot, and the pivot is passed through the bearing and is installed on the casing, stator module includes stator core and installs the coil winding on stator core, the nested inner wall at the casing of stator core, rotor subassembly cover is in the stator module the inside, and the tip of rotor subassembly is provided with the fan blade, outside the fan blade is the coil winding is equipped with the clearance on one side of stator core, coil winding, wherein, the clearance is located the radial outside of fan blade, is provided with a plurality of ventholes at housing sidewall, and the venthole is located the radial outside in clearance. The fan blade has formed high nip between fan blade and coil winding when rotating, the venthole is distinguished for the ordinary pressure outward, and this heat -radiating structure of motor has shortened