VIBRATION CHALK ERASER FOR BLACKBOARD USING SUCTION FAN

摘要

PURPOSE: A vibration chalk eraser is provided which employs a vibration plate mounted eccentrically on a motor shaft and has a pad with good air-permeability, such that chalk marks can be erased by vibration of a vibration plate without rubbing the eraser. CONSTITUTION: A vibration chalk eraser includes a motor shaft(11) axially mounting a suction fan(30) and eccentrically mounting a vibration plate(70) attached with a removable pad(90) of good air permeability for the vibration of the plate to dust the chalk of writings off the blackboard to be collected by the suction fan(30) into a chalk dust collector to the effect of removing the hazard of chalk dust to health.