Multifunctional dustproof blackboard eraser

Abstract

The invention relates to a blackboard eraser, in particular to a multifunctional dustproof blackboard eraser. The multifunctional dustproof blackboard eraser comprises a blackboard eraser main body. The multifunctional dustproof blackboard eraser is characterized in that the lower end of the blackboard eraser main body is provided with an opening, and the upper end of the blackboard eraser main body is provided with a dust cover capable of being opened and closed; a cylindrical dust box is arranged in the top end of the blackboard eraser main body, and the outer wall of the upper portion of the dust box is provided with a circle of equally-spaced dust holes; the lower end of the dust box is connected with a power chamber; a motor is fixed to the top end of the power chamber; a power source is fixed to the inner wall of the power chamber; the outer wall of the power chamber is provided with a control switch; the motor, the power source and the control switch are connected in series through a wire; a motor rotary shaft is connected with a fan blade center which is connected with three fan blades; each fan blade is provided with fur brushes; an annular dust channel is formed by the fan blades, the power chamber, the dust box and the outer wall of the blackboard eraser main body and communicated with the dust box through the dust holes.

Description

(1) Technical field [0001] The invention relates to a blackboard eraser, in particular to a dust-proof multifunctional blackboard eraser. (2) Background technology [0002] In the teaching process, in order to facilitate students’ memory and understanding, blackboards are used to write on the blackboard. Most of the writing on the blackboard is with chalk. Chalk characters will generate dust when they are erased with a blackboard eraser. The human body will have a very adverse effect on the health of the human body after inhalation. Moreover, when wiping the blackboard, sometimes students may not be able to wipe it clean because of their weak strength, and students will feel sore arms after wiping the blackboard. (3) Contents of the invention [0003] In order to make up for the deficiencies of the prior art, the present invention provides a dust-proof multifunctional blackboard eraser with simple structure and convenient use. [0004] The present invention is achieved t...

AI Technical Summary

Problems solved by technology

[0002] In the teaching process, in order to facilitate students’ memory and understanding, blackboards are used to write on the blackboard. Most of the writing on the blackboard is done with chalk. Chalk characters will generate dust when they are erased with a blackboard eraser. Human body will have a very adverse effect on human health after inhalation

Moreover, when wiping the blackboard, sometimes the students may not be able to wipe it clean because of their weak strength, and the students will feel sore arms after wiping the blackboard

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