| 摘要 |
<p>A motor (10) includes a rotor (28), a stator (25) that rotates the rotor (28) about a rotation shaft (30) of the rotor (28), a cooling fan (43) that rotates about the rotation shaft (30), and a rotation speed adjustment mechanism (70). The rotation speed adjustment mechanism (70) that adjusts a rotation speed of the cooling fan (43) so that the rotation speed of the cooling fan (43) conforms to a rotation speed of the rotation shaft (30) when the rotor (28) is rotating at an accelerating speed or a constant speed and so that the rotation speed of the cooling fan (43) becomes higher than the rotation speed of the rotation shaft (30) when the rotor (28) is decelerating.</p> |
