ROTOR, PERMANENT MAGNET ELECTRIC MOTOR HAVING THE ROTOR, FLUID MACHINE HAVING THE PERMANENT MAGNET ELECTRIC MOTOR, AND METHOD FOR MANUFACTURING THE ROTOR

摘要

A rotor includes a rotor core which is formed by stacking steel plates and includes a first through hole in a center part, at least one second through hole in the vicinity of the first through hole and a rivet insertion hole; a plurality of permanent magnets which are disposed in a circumferential direction of the rotor core and are embedded in a stacking direction of the steel plates; a main shaft which is shrink-fitted or press-fitted in the first through hole of the rotor core; a pin made of an insulating material and inserted in the second through hole of the rotor core; and an upper end plate and a lower end plate which are disposed on both ends of the rotor core in the stacking direction and are fixed by a rivet inserted in the rivet insertion hole.

主权项

1. A rotor comprising:
a rotor core formed by stacking steel plates and including a first through hole provided in a center part thereof, at least one second through hole provided in the vicinity of the first through hole and a rivet insertion hole; a plurality of permanent magnets disposed in a circumferential direction of the rotor core and embedded in a stacking direction of the steel plates; a main shaft shrink-fitted or press-fitted in the first through hole of the rotor core; a pin press-fitted in the at least one second through hole of the rotor core and made of an insulating material; and an upper end plate and a lower end plate each disposed on corresponding ends of the rotor core in the stacking direction and fixed by a rivet inserted in the rivet insertion hole.