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Blackboard eraser

A blackboard eraser and box body technology, applied in the field of blackboard eraser, can solve the problems of a large amount of dust, single function of blackboard eraser, affecting the health of users and bystanders, and achieve the effect of avoiding flying dust and good promotion value

Inactive Publication Date: 2016-08-24
李德海
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Blackboard eraser is a commonly used teaching product. The function of existing blackboard eraser is relatively single, and a large amount of dust will be generated during use, which will affect the health of users and bystanders. It can no longer meet the existing environmental protection needs and use requirements. , usually need a blackboard eraser with a new structure

Method used

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  • Blackboard eraser

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Embodiment 1

[0011] Such as figure 1 A blackboard eraser mainly includes a box body 1 and bristles 3, several through holes 2 are processed in the box body 1, a cover 4 is installed on the top of the box body 1, and activated carbon 5 is filled in the cover 4;

[0012] The box body 1 and the cover 4 are threadedly connected.

[0013] A kind of blackboard eraser provided by the present invention, by adopting the above-mentioned structure, during use, remove described cover 4, fill described active carbon 5 in it, be connected with described box body 1, when wiping blackboard, the generated Dust can enter the cover 4 through the through hole 2 and be absorbed by the activated carbon 5, thereby avoiding dust flying.

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Abstract

A blackboard eraser belongs to the teaching article field, and provides environmental protection and health effects; the blackboard eraser mainly comprises a box body and brushing; the box body is provided with a plurality of through holes; the top of the box body is provided with a cover; the cover is filled with active carbon; the box body and the cover are in thread connection; in application, the cover is removed and filled with active carbon and connected with the box cover; when the blackboard is rubbed, the dusts can enter the cover through the through holes and are absorbed by the active carbon, thus preventing dust flying; the blackboard eraser is convenient in usage, environmental friendly, and very good in popularization values.

Description

technical field [0001] The invention belongs to the field of teaching supplies, and in particular relates to a blackboard eraser. Background technique [0002] Blackboard eraser is a commonly used teaching product. The function of existing blackboard eraser is relatively single, and a large amount of dust will be generated during use, which will affect the health of users and bystanders. It can no longer meet the existing environmental protection needs and use requirements. , generally need a blackboard eraser of a novel structure. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a blackboard eraser to achieve the purpose of ensuring environmental protection and health. [0004] In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: a blackboard eraser, which mainly includes a box body and bristles, and is characterized in that several through holes a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/02
Inventor 李德海
Owner 李德海