| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve a problem that vibration intensifies due to positional relationship between unbalance of a centrifugal fan and unbalance of an armature core.SOLUTION: An electric blower 10 has a motor unit 20 and a centrifugal fan 16. The motor unit 20 is disposed in a cylindrical bracket 12 which is closed at one side and opened at the other side, and the centrifugal fan 16 is disposed in a fan case 15. The motor unit 20 is configured to contain a stator 30 as a field magnet and a rotor 40 as an armature. The stator 30 is formed by winding a field coil 32 around a field core 31 having a rectangular cylindrical shape, and the thus-formed stator 30 is fixed inside the bracket 12. The rotor 40 is configured to contain an armature core 41, an armature coil 42, a rotating shaft 43 and a commutator 45. The armature coil 42 is wound around the armature core 41, and the rotating shaft 43 is coupled to the armature core 41 so as to penetrate through the center of the armature core 41.</p> |
