| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electric motor in which interference of the key of a rotor and the keyway of a stator is prevented at the time of shrink-fitting, while preventing occurrence of detection error of the rotation angle of the rotor.SOLUTION: An electric motor 1 has a rotor 4 provided with a key 4a projecting radially inward, a shaft 5 provided with a keyway 5b fitting to the key 4a of the rotor 4, and a rotation angle detection sensor 9 for detecting the rotation angle of the rotor 4 from the relative positional relationship of the rotor 4 and a stator 5. The rotor 4 and shaft 5 are shrink-fitted. The key 4a and keyway 5b become narrower toward the center side of the shaft 5.</p> |
