Automatic eraser device

Abstract

An automatic blackboard eraser system is composed of two parallel tracks respectively arranged above and under blackboard and with position regulator, a driver, a supporting frame driven by said driver for reciprocating between said two tracks, an eraser on said supporting frame, and two controllers at both sides for controlling the reciprocating of supporting frame.

Description

technical field [0001] The invention relates to a cultural and educational article, in particular to an automatic blackboard eraser for erasing chalk writing on a blackboard. Background technique [0002] The existing blackboard eraser for erasing the writing on the blackboard is very simple. It only fixes felt-like bristles on one side of the blackboard eraser body, and uses the felt to wipe back and forth on the writing on the blackboard so that the writing can be erased from the blackboard to achieve clearing. The purpose of writing on the blackboard is to use this kind of blackboard eraser to wipe the writing on the blackboard, which not only makes the writing dust float on the surface of the blackboard, but also makes people suffer from dust pollution and affects the health of users. Board, also greater to the physical exertion of people. Now people have designed some blackboard erasers that can automatically wipe the blackboard driven by external force, but most of th...

AI Technical Summary

Problems solved by technology

[0002] The existing blackboard eraser for erasing the writing on the blackboard is very simple. It only fixes felt-like bristles on one side of the blackboard eraser body, and uses the felt to wipe back and forth on the writing on the blackboard so that the writing can be erased from the blackboard to achieve clearing. The purpose of writing on the blackboard is to use this kind of blackboard eraser to wipe the writing on the blackboard, which not only makes the writing dust float on the surface of the blackboard, but also makes people suffer from dust pollution and affects the health of users. Board, the physical exertion of people is also greater

Now people have designed some blackboard erasers that can automatically wipe the blackboard driven by external force, but most of these blackboard erasers that automatically wipe the blackboard are complex in structure, very inconvenient to install and replace the blackboard eraser, and have poor controllability during use , bring some inconvenience to people's use

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