Patent ID: 7412750

Claim:
A suction brush of a vacuum cleaner comprising: a body having a main suction port formed through a bottom of the body; a cover for covering a top of the body, the cover being provided with a plurality of auxiliary suction ports; a pair of floorcloth support plates rotatably mounted on the bottom of the body; first and second floorcloths being detachably attached to a bottom surface of the floorcloth support plates, respectively; a floorcloth rotation unit mounted in the body that rotates the pair of floorcloth support plates; a first air suction flow path for guiding air introduced through the main suction port to a rear side of the body; and a second air suction flow path for guiding air introduced through the plurality of auxiliary suction ports to the rear side of the body, wherein the floorcloth rotation unit comprises: a driving shaft arranged to be rotatable in relation to the body and the cover; a worm gear being formed around the circumference of a lower part of the driving shaft; a driving fan engaged with an upper part of the driving shaft; a first driven shaft arranged perpendicular to the driving shaft and having a worm wheel provided at a longitudinal center of the first driven shaft, in which the worm wheel is meshed with the worm gear so that the first driven shaft transfers the rotational force of the driving shaft to opposite lateral sides of the body; a pair of second driven shafts arranged at opposite ends of first driven shaft, lower ends of the second driven shafts being individually engaged with the floorcloth support plates; and two pairs of bevel gears arranged between the opposite ends of the first driven shaft and the pair of second driven shafts, respectively.