Closed blackboard eraser box

Abstract

The invention provides a closed blackboard eraser box. The closed blackboard eraser box comprises a blackboard eraser wood board and a blackboard eraser box body, wherein blackboard eraser cotton is bonded to the surface of the blackboard eraser wood board; a supporting plate is in joggle joint with the inner wall of the blackboard eraser box body; a supporting rod is welded to the surface of thesupporting plate; a motor is fixedly connected to the surface of the supporting rod; an output shaft of the motor is fixedly connected with a rotating shaft through a coupler; fan blades are welded tothe surface of the rotating shaft; the surface of the rotating shaft is sleeved with a vibration pipe; a limiting rod is welded to the surface of the supporting plate; the surface of the limiting rodis in an L shape; a limiting groove is formed in the surface of the vibration pipe; and one end of the limiting rod is in sliding connection with the inner wall of the limiting groove. The closed blackboard eraser box is simple in structure, a net-shaped elastic mechanism is used for resonating a blackboard eraser, dust on the surface of the blackboard eraser can be efficiently and comprehensively removed, influences of dust on teachers and students are reduced, and the problems that when chalk dust falls off from an existing blackboard eraser, dust is not prone to falling, and the health ofthe teachers and students is seriously affected by the floating dust are effectively solved.

Description

[0001] This application is a divisional application of a closed eraser box with the application date of October 27, 2018 and the application number CN201811262581.0. technical field [0002] The invention relates to the technical field of stationery, in particular to a closed eraser box. Background technique [0003] The blackboard eraser is suitable for stationery to wipe the blackboard. In the process of teaching blackboard writing, the blackboard eraser must be used to wipe the blackboard. During this process, thick chalk dust will be absorbed on the surface of the blackboard eraser. The chalk dust on the blackboard eraser needs to be cleaned frequently, otherwise It will be inconvenient to wipe the blackboard clean. At present, chalk dust is mainly removed by beating. Although the dust on the eraser can be removed, the dust cannot be quickly and efficiently removed due to the tight contact between the beating surface of the eraser and the beating surface, and the beating ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a closed eraser box, which solves the problem that when the current blackboard eraser falls off chalk dust, the dust is not easy to fall off, and the scattered dust seriously affects the health of teachers and students

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