DUST INDICATING DEVICE FOR VACUUM CLEANER BY CONTROLLING FLOW OF AIR IN AIR FLOW HOLE

摘要

PURPOSE: A dust indicating device for a vacuum cleaner is provided to minimize the reject rate of the dust indicating device by controlling the flow of air in an air flow hole according to the rotation of a rotary body. CONSTITUTION: In a dust indicating device for a vacuum cleaner, a rotary body(70) is installed at the portion where an indicating body(60) is stuck to a moving body(50). A vent hole(71) corresponding to an air flow hole(61) is formed at the rotary body, and controls the opening degree of the air flow hole by the rotation of the rotary body. The indicating body is coupled to a housing(30) by a screw. The elasticity of an elastic spring(40) is controlled according to the rotation of the indicating body.