AUTOMATIC CLEANER OF BLACKBOARD ERASER

PURPOSE: To prevent scattering of chalk powder in air in a room by normally and inversely rotating rotation shafts having elastic brushes to remove chalk powder from a chalk erasor, and collecting the removed chalk powder to a chalk powder receiving tank. CONSTITUTION: As a chalk erasor is engaged in an insert part in a main body 27, a circumferential edge part of it presses down a pushdown button protruded from a front surface of the maid body 27, so a proximity switch 32 is put on by a magnet included in the chalk erasor. An opening/closing member 21 is rotated by the pushdown button pushed down to cause opening/closing doors 23, 23a to be pushed to be opened on both sides of the main body 27 by elastic bars 20, 20a fixed at one end of it. Simultaneously, a motor 2 is rotated in normal and inverse directions at a specified interval, and plural rotary bodies 7-10 are normally/inversely rotated through a pulley 4 of a motor shaft 3, so elastic brushes installed on rotation shafts 7b-10b strike a lower surface of the chalk erasor where chalk powder is attached to remove the chalk powder from it. A chalk tank 26 is provided at a lower part and on a back surface in the main body 27.