SUCTION BRUSH HEIGHT ADJUSTING APPARATUS

摘要

An interval adjusting apparatus of a suction brush is provided to remove the stagnation of the fine impurities in the gap and to prevent the rotation of the interval adjusting knob from being restricted by arranging the grooves between the interval adjusting knob and the insertion groove. An interval adjusting apparatus of a suction brush is composed of: an interval adjusting knob(310) rotatably installed at an insertion groove formed at the suction brush and formed with a slope part(311) having different heights with the cleaned surface according to the rotary position; a support member contacted with the slope part of the interval adjusting knob so as to support the lifting of the suction brush; and a predetermined path formed between the inner peripheral surface of the insertion groove and the outer peripheral surface of the interval adjusting knob to pass through the fine impurities. The path contains plural grooves(314) formed at the outer peripheral surface of the interval adjusting knob.