Scanning and dust collecting blackboard eraser

Abstract

The invention relates to the technical field of education supplies, in particular to a scanning and dust collecting eraser. The scanning and dust collecting blackboard eraser comprises a blackboard eraser body, guide rails, pulleys, a motor I and a controller. The blackboard eraser body comprises a scanning module, a dust collecting module and a rotation plate block. The guide rails are arranged on an upper frame and a lower frame of a blackboard and extend out of the frames. The pulleys are installed on the two corresponding sides of the blackboard eraser body and located in the guide rails. The motor I is connected with the pulleys and the controller. The rotation plate block is installed on the bottom face of an inner cavity of the blackboard eraser body and provided with the dust collecting module and the scanning module. The scanning and dust collecting blackboard eraser can automatically erase the blackboard and can also collect dust; the scanning and dust collecting blackboard eraser can also scan the blackboard before erasing the blackboard; and projection cloth is also arranged, and the scanning and dust collecting eraser can show multifunctionality through combination with multimedia teaching.

Description

technical field [0001] The invention relates to the technical field of teaching supplies, in particular to a scanning and vacuuming blackboard eraser. Background technique [0002] Blackboard eraser is one of the commonly used tools in teaching. When schools or enterprises use blackboard for teaching or recording, they usually need to use blackboard eraser to erase the traces on the blackboard so as to realize rewriting. During the use of traditional blackboard erasers, human operation is required to move left, right, up and down to wipe off the traces on the blackboard. When using a blackboard eraser to wipe writing marks, chalk dust is often caused to fly everywhere in the surrounding environment, and the falling chalk dust will be inhaled by users or participants, which will have an impact on the human respiratory system. Aiming at the prior art, the patent No. 201420828108.5 provides a blackboard eraser, which is composed of a blackboard eraser body and guide rails. The...

AI Technical Summary

Problems solved by technology

But its disadvantage is that the large blackboard eraser is not equipped with the function of automatically erasing the blackboard, and it is extremely inconvenient to use manpower to pull the blackboard eraser to wipe the blackboard

Secondly, the big blackboard eraser can’t just wipe wherever you want. The writing traces on the blackboard will be erased at one time, so that all the notes on the blackboard will be erased before students take notes, which is not conducive to teaching efficiency. promote

Finally, most of the teaching is now multimedia teaching. On the one hand, the projection cloth will cover half of the blackboard, making the blackboard appear narrow, and sometimes there is not enough writing space. On the other hand, the non-movable setting of the projection cloth makes the projection cloth lose its flexibility, which affects the teaching effect did not have any effect

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