Patent ID: 7780752

Claim:
A cyclone dust-separating apparatus of a vacuum cleaner comprising: a cyclone unit having a cyclone chamber to whirl first air drawn in from outside thus to separate first dust or dirt therefrom; a filter unit disposed in a filtering chamber located downstream of the cyclone unit and having a filter to filter second dust or dirt from the first air; a cleaning unit to brush away the second dust or dirt accumulated in the filter by using second air drawn in from the outside; and a dust collecting unit to collect and store the first dust or dirt separated from the first air by the cyclone chamber and the second dust or dirt brushed away from the filter by the cleaning unit, wherein the cleaning unit comprises: a filter brushing part to brush away the second dust or dirt from the filter; a driving part to drive the filter brushing part by the second air; and an air passage changing part to change an air passage to allow the second air to drive the driving part in a filter cleaning mode, and wherein the filter brushing part comprises: a rim member having at least one spoke, supported on a supporting axis rotatably installed in a supporting sleeve around which the filter is fixed; and a plurality of ribs movably and elastically supported on the rim member to come in contact with the filter thus to brush away the second dust or dirt from the filter when the rim member is rotated.