| 摘要 |
A rotor of an electric motor comprises a rotor core composed of laminated steel plates and having pin holes; a pair of end plates having insertion holes of a diameter being greater than or equal to the diameter of the pin holes of the rotor core and arranged on opposite sides of the rotor core; and fastening members inserted into the pin holes of the rotor core, fitted in the insertion holes of the pair of end plates, and pressed by staking at opposite end portions thereof, wherein each fastening member has a body portion, main radially-expanded portions continued from the body portion and being larger in diameter than the insertion holes of the end plates, and protrusions continued from the main radially-expanded portions and protruding from the main radially-expanded portions.
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