Suction brush for use in vacuum cleaner and method of adjusting the height thereof

摘要

A suction brush (100) for use in a vacuum cleaner and a method of adjusting the height thereof. The suction brush (100) includes a brush casing (110) having a suction opening to draw in air and a main air passage through which the air drawn in through the suction opening flows, a detecting unit (120) disposed to the brush casing to detect a kind of a surface to be cleaned, a lifting unit (140) to move a bottom surface of the brush casing (110) close to and away from the surface to be cleaned, and a driving unit (160) operated in response to a signal generated from the detecting unit (120) and moving the lifting unit (140) using air pressure generated by the air flowing through the main air passage.