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Dustproof blackboard eraser

A blackboard eraser and dust-proof technology, applied in the field of blackboard erasers, can solve the problems of flying chalk, affecting the health of teachers and students in the front row, and inconvenient cleaning for students on duty, so as to reduce the burden, reduce health hazards, and ensure The effect of class progress

Inactive Publication Date: 2013-01-23
蒋凌萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But now the blackboard erasers commonly used in schools are only composed of shells and felt, and it is easy to make chalk dust fly when wiping the blackboard, which affects the health of teachers and students in the front row
At the same time, the chalk dust fell on the ground, which was very inconvenient for the students on duty when cleaning
Sometimes, teachers find that there is no chalk in the middle of the class, and they need to go to the Academic Affairs Office to get it or borrow it from other classrooms, which affects the progress of the class and the concentration of the students

Method used

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  • Dustproof blackboard eraser

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Embodiment 1

[0010] This embodiment provides a kind of dust-proof blackboard eraser, the structure is as follows: figure 1 Shown, comprise blackboard eraser 1, be made up of shell 2 and felt 3, the left side of described shell 2 and the baffle plate 4 that a piece of soft rubber is made of adornment respectively, baffle plate 4 follows blackboard eraser 1 Its width is the same as the thickness of the felt 3; the bottom of the shell 2 is equipped with a dust storage tank 5, and the width of the dust storage tank 5 is 1 to 2 mm smaller than the thickness of the felt 3, and the width of the dust storage tank 5 is 1-2 mm smaller than the thickness of the felt 3. There is a gap of 2 to 3 cm between them; the dust storage tank 5 is equipped with a drawer 6, and the drawer 6 can be drawn out from the dust storage tank 5; the inside of the shell 2 is provided with a chalk tank 7, and a drawer Pull plate 8.

[0011] During specific use, pull out drawing plate 8, pack 5 chalks in chalk groove 7, cl...

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Abstract

The invention relates to a dustproof blackboard eraser comprising a blackboard eraser which is formed by a shell and a felt, wherein each one of the left side surface and the right side surface of the shell is provided with a baffle; the width of the baffle is the same as that of the felt; a dust storage groove is arranged below the shell, the width of the dust storage groove is 1-2mm less than the thickness of the felt and a gap being 2-3cm is reserved between the dust storage groove and the felt; a drawer is arranged inside the dust storage groove and the drawer can be pulled out from the dust storage groove; a chalk groove is arranged inside the shell; and a drawing-pulling plate is arrange above the chalk groove. The invention provides the dustproof blackboard eraser which can prevent dust from flying when a blackboard is erased, and the condition that chalk is exhausted in class is avoided, so that a class progress is guaranteed.

Description

technical field [0001] The invention relates to a blackboard eraser, in particular to a dustproof blackboard eraser. Background technique [0002] Blackboard eraser is an essential thing in school, during class, teachers often use blackboard eraser to wipe the blackboard. But the blackboard eraser that school generally uses now just is made up of shell and felt, is easy to make chalk dust fly randomly when wiping blackboard, has influenced the health of teachers and students in the front row. At the same time, the chalk dust fell on the ground, which was very inconvenient for the students on duty when cleaning. Sometimes, teachers find that there is no chalk in the middle of the class, and they need to go to the Academic Affairs Office to get it or borrow it from other classrooms, which affects the progress of the class and the concentration of the students. Contents of the invention [0003] In view of the above disadvantages, the present invention provides a dust-proof...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/02
Inventor 蒋凌萍张凌
Owner 蒋凌萍
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