Patent ID: 7257859

Claim:
A cleaner comprising: a suction motor mounted in a main body, and generating a suction force; a filter that collects dust or filth sucked by the suction force generated at the suction motor; a suction head connected with the filter by a suction pipe, and having an inlet through which dust and filth on a floor are sucked; and a brush rotatably mounted at an inside of the suction head; wherein, the inlet is partitioned into a first section and a second section by a belt cover that protects a belt winding around the brush, and a flow passage unit is formed at the brush so that air can flow between the first section and the second section, and wherein the flow passage unit comprises: a reduced-diameter portion where a diameter at opposite sides of a driven pulley around which the belt winds is reduced, respectively; an exposed surface formed at each side of the driven pulley by the diameter-reduced portion; and at least one flow passage penetrating the exposed surface.