ROTOR FOR VEHICLE DRIVING MOTOR, AND METHOD OF FIXING PERMANENT MAGNET IN THE ROTOR

PROBLEM TO BE SOLVED: To provide a method for increasing the fixing durability of a permanent magnet in a rotor, and a method for increasing the durability of a driving motor.SOLUTION: A method includes the steps of: inserting a permanent magnet into a core of a rotor; and injecting a resin to the permanent magnet to fix the permanent magnet. A thermal expansion coefficient of the resin is equivalent to that of the rotor core. In addition, in a rotor of a vehicle driving motor, a permanent magnet is inserted into a rotor core, the permanent magnet is fixed by resin injection, and a thermal expansion coefficient of the resin and that of the rotor core are equivalent to each other.