Automatic blackboard eraser

Abstract

The invention provides an automatic blackboard eraser, which relates to the field of study tools, in particular to the automatic blackboard eraser comprising an outer cover case (1), a battery device (2), a motor controller (3), a belt (4), a rotating shaft (5), a round tube shaft (6), tube-shaped wiping cloth (7), a fixed support frame (8), a dustproof plate (9) and a wiping switch (10). The invention adds the motor controller, the round tube shaft, the tube-shaped wiping cloth and the dustproof plate, when the wiping switching is switched on, the motor controller controls the round tube shaft to drive the tube-shaped wiping cloth for wiping off chalk characters on a blackboard, the flying of the chalk dust can be reduced through the dustproof plate, time and labor can be saved, the efficiency of teachers on class can be improved, and the study efficiency of students on class can also be relatively improved.

Description

Technical field: [0001] The invention relates to the field of learning appliances, in particular to an automatic blackboard eraser. Background technique: [0002] When teaching in class, teachers not only have to carefully prepare lessons, but also focus on writing on the blackboard on the blackboard. At this time, some special topic types need to be memorized by students in the class notes. When studying in high school, there are always a lot of writing on the blackboard. In addition, the teacher kept writing some key sentences during class, and then because of the design needs of the writing on the blackboard, he always had to erase it. At this time, the blackboard eraser is used by the teacher. The most common tool is the current blackboard eraser, which is equipped with a wiping cloth under the plastic or iron shell, but the teacher always needs to wipe the blackboard vigorously to wipe off the chalk on the blackboard. Compared with the whole class, the time for wiping ...

AI Technical Summary

Problems solved by technology

[0002] When teaching in class, teachers not only have to carefully prepare lessons, but also focus on writing on the blackboard on the blackboard. At this time, some special topic types need to be memorized by students in the class notes. When studying in high school, there are always a lot of writing on the blackboard. In addition, the teacher kept writing some key sentences during class, and then because of the design needs of the writing on the blackboard, he always had to erase it. At this time, the blackboard eraser is used by the teacher. The most common tool is the current blackboard eraser, which is equipped with a wiping cloth under the plastic or iron shell, but the teacher always needs to wipe the blackboard vigorously to wipe off the chalk on the blackboard. Compared with the whole class, the time to wipe the blackboard is also a lot of time, which reduces the efficiency of teachers in class and increases the labor intensity of teachers in class

In addition, the current blackboard eraser used by teachers in class has no dust-proof device, causing chalk dust to fly around after wiping the blackboard, just like a rain of white chalk dust, which affects the health of teachers and students

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