Permanent magnetism inverter motor rotor punching

The utility model discloses a permanent magnetism inverter motor rotor punching belongs to motor technical field. A permanent magnetism inverter motor rotor punching, the rotor punching is circular structure, be equipped with four logical groove (1) of being used for built -in magnet steel that are that the square arranges on the rotor punching, lead to groove (1) evenly distributed around the rotor punching center, characterized by: all be equipped with a set of air gap in every outside position that leads to groove (1) on the rotor punching, every group air gap includes a plurality ofly roughly along the banding air gaps of the length of radially arranging of rotor punching, all leave the clearance between the outer circumference of air gap and logical groove (1) that corresponds and rotor punching. The utility model discloses a long banding air gap of design guides the magnetic circuit orientation on the rotor punching, has reached regulation magnetic field route and magnetic field distribution's purpose, and it is even to make air -gap flux density distribute, thereby has reduced high frequency harmonic volume and reduced the electromagnetism noise to the motor resistance to motion diminish, and the motor operation is more steady.