Patent ID: 7653964

Claim:
An apparatus for adjusting a height of a suction brush for use in a vacuum cleaner, comprising: a height adjusting knob rotatably disposed in an inserting recess formed in the suction brush, the height adjusting knob having a flange protruding from an outer circumferential surface of the height adjusting knob to prevent the height adjusting knob from being removed from the inserting recess, an operating part to rotate the height adjusting knob, an inclined part formed thereon so that a height of the suction brush from a surface to be cleaned is varied as a position of the height adjusting knob is rotated, and at least one fixing groove formed in the outer circumferential surface of the height adjusting knob for fixing the rotating position thereof; a supporting member to support the suction brush in contact with the inclined part so that the suction brush can be ascended and descended by the inclined part; and a passage disposed between an inner circumferential surface of the inserting recess and the outer circumferential surface of the height adjusting knob to pass fine dirt therethrough, the passage formed by a plurality of passing grooves formed in the outer circumferential surface of the height adjusting knob in a spaced-apart relation to each other and penetrating through the flange.