ROTOR OF PERMANENT MAGNET TYPE MOTOR, MANUFACTURING METHOD OF THE SAME, AND PERMANENT MAGNET TYPE MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a rotor of a permanent magnet type motor which effectively utilizes magnetic flux generated from permanent magnets without deteriorating the efficiency of the permanent magnet type motor thereby achieving further streamlining and improving the reliability of the mechanical strength during high-speed operation.

SOLUTION: A rotor 100 has a first yoke part 1 formed by laminating multiple magnetic steel sheets and disposed at the center side of the rotor; multiple permanent magnets 2 disposed at the outer peripheral side of the first yoke part 1; a second yoke part 3 formed by laminating multiple magnetic steel sheets and disposed at the outer peripheral side of the permanent magnets 2; and a ring part 4 provided at the outer peripheral side of the second yoke part 3 and pressing the first yoke part 1, the permanent magnets 2, and the second yoke part 3 from the outer peripheral side of the second yoke part 3 to the rotor center side.

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