Low-voltage direct-current motor, dust collector rolling brush and household appliance

Low-voltage direct-current motor, dust collector rolling brush and household appliance

  • CN 106,257,805 B
  • Filed: 04/19/2016
  • Issued: 07/30/2021
  • Est. Priority Date: 06/19/2015
  • Status: Active Grant
First Claim
Patent Images

1. A low-voltage direct current motor for a rolling brush of a dust collector comprises a stator and a rotor rotating relative to the stator, wherein the rotor comprises a rotating shaft, a rotor magnetic core fixed on the rotating shaft, a commutator fixed on the rotating shaft and adjacent to the rotor magnetic core, and a rotor winding wound on the pole part of the rotor magnetic core and electrically connected with the commutator, the stator comprises a barrel-shaped shell, a permanent magnet arranged on the inner surface of the shell, and an electric brush in sliding contact with the commutator, the input voltage of the motor is within the range of 7-36V, the ratio of the outer diameter of the rotor magnetic core to the outer diameter of the shell is 67% -75%, the permanent magnet is a ferrite magnet, the outer diameter of the shell is 27.5mm +/-0.3 mm, the outer diameter of the rotor magnetic core is 19mm +/-0.2 mm, and the axial length of the magnet is 21.0mm +/-2.1 mm, 27.5mm +/-0.3 mm or 34mm +/-0.3 mm when the input voltage of the motor is 16.2V +/-1.6V, the rated output power of the motor can reach 20 watts and 50 watts respectivelyOr 80 watts, the maximum magnetic energy product value BHmax of the ferrite magnet is 35.8 +/-1.6 kj/m3Or 34.2 +/-1.6 kj/m3Is made of the material of (1).

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