Patent ID: 6463623
Filing Date: 2002-10-15
Classification: A47L

Abstract:
A power brush assembly for vacuum cleaners, comprising:a casing set in a suction part of a vacuum cleaner and defining a suction nozzle used for sucking dust-laden air under pressure into said suction part of the vacuum cleaner; a power brush set within said casing such that the brush is rotatable and reciprocable to the left and right, said power brush being used for brushing dust and impurities on a target surface; a drive motor generating a force for allowing said power brush to rotate and reciprocate to the left and right; and a power transmission mechanism connecting said drive motor to said power brush and transmitting the rotating force of the drive motor to the power brush, wherein said drive motor comprises: a motor shaft assembled with said casing such that the motor shaft is rotatable and reciprocable relative to the casing; a rotor frame integrated with said motor shaft; a rotation magnet and reciprocation magnet set at said rotor frame, said rotation magnet rotating the rotor frame and said reciprocation magnet moving the rotor frame to the left and right; a stator positioned inside the rotor frame while being spaced apart from the rotation and reciprocation magnets; a first stator core set on said stator and rotating said rotation magnet in response to an application of electricity thereto; and a second stator core set on said stator and moving said reciprocation magnet to the left and right in response to an application of electricity thereto.