Blackboard eraser good in dust sucking and accumulating effect

A blackboard eraser and dust-accumulating technology, which is applied in the field of education and teaching, can solve the problems of polluting the environment, difficulty in erasing handwriting and dust accumulation, and dust flying randomly, so as to beautify the teaching environment, strengthen the dust adsorption effect, and facilitate the removal of adsorbed dust Effect

Active Publication Date: 2016-01-27
林依璇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a blackboard eraser with good dust absorption and dust accumulation effect, thereby solving the problems of flying dust, polluting the environment, difficulty in erasing handwriting and poor dust accumulation effect when using a blackboard eraser in the past

Method used

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  • Blackboard eraser good in dust sucking and accumulating effect
  • Blackboard eraser good in dust sucking and accumulating effect
  • Blackboard eraser good in dust sucking and accumulating effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] like Figure 1-Figure 4 The described blackboard eraser with good dust suction and dust accumulation effect includes an insulating box body 8, a water sprayer 25 and a dust accumulation box 24. The insulating box body 8 is a hollow rectangular structure with an opening on one side, and the interior of the hollow rectangular structure is Installation cavity, the open end of the installation cavity is provided with insulating brush 1, aluminum foil 2 and plastic plate 5 in sequence from outside to inside, the aluminum foil 2 is bonded to the plastic plate 5 by solid glue 4, the aluminum foil 2 and the plastic plate 5 The surrounding edges of 5 are all bonded to the inner side of the open end of the insulating box body 8 through the insulating adhesive plate 3, and the interior of the installation cavity is separated by the isolation transverse plate 10 to form an upper chamber and a lower chamber that are isolated from each other, and the upper chamber is separated from ea...

Embodiment 2

[0028] This embodiment adds the following structure on the basis of Embodiment 1: the side of the insulating box 8 is also provided with a control switch 6 for connecting or disconnecting the wire 11 .

[0029] The control switch 6 in this embodiment can control the on or off of the wire, so that the wire can be disconnected without using the blackboard eraser, avoiding the generation of static electricity when not in use, and preventing teachers and students from hitting hands due to static electricity during use.

Embodiment 3

[0031] This embodiment adds the following structure on the basis of Embodiment 1 or Embodiment 2. Specifically, a handle 12 is further provided on the outer side surface of the other end face of the insulating box body 8 located at the open end.

[0032] In this embodiment, in order to facilitate use and pick and place, and at the same time reduce the contact between the human hand and the insulating box body 8, a handle 12 is specially provided on the outer side of the other end face of the insulating box body 8 at the open end. Teachers and students can hold the handle 7 for blackboard. Erasing is very convenient.

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PUM

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Abstract

The invention discloses a blackboard eraser good in dust sucking and accumulating effect. The blackboard eraser comprises an insulation box, a water sprayer and a dust accumulating box. A blackboard hairbrush, aluminum foil and a plastic plate are arranged in an installing cavity of the insulation box. The water sprayer comprises a water storage cylinder. An atomizing sprayer and a water outlet button are arranged at the two ends of the water storage cylinder respectively. A buckle is arranged on the circumferential face of the water storage cylinder. The dust accumulating box comprises a dust accumulating box body provided with a positioning step, a mini-type battery and a mini-type fan. The outer end of the mini-type fan is sleeved with a filtering mesh. A ventilation hole is formed in the position, located at the mini-type fan, in the bottom of the dust accumulating box body. Arc ground feet are arranged at the bottom of the dust accumulating box body. A control switch for controlling the on-off state of the mini-type fan is arranged on the side face of the dust accumulating box body. The dust accumulating box and the arc ground feet are all made of electric conduction materials. The insulation box can be placed in the dust accumulating box, and the aluminum foil makes contact with the positioning step. The water sprayer can be used for spraying water, handwriting hard to wipe can be wiped away, and a blackboard is kept clean and cannot be wet.

Description

technical field [0001] The invention relates to a teaching tool, belonging to the field of education and teaching, in particular to a blackboard eraser with good dust-absorbing and dust-accumulating effects. Background technique [0002] In traditional law teaching, the blackboard is a must-have facility in every classroom. After writing with chalk on the blackboard, it will be erased with a blackboard sassafras when it is not needed. In the past, most of the blackboard sassafras were simply the main body plus a brush. When erasing, the dust of chalk dust would fly around, especially when removing or eliminating the dust adsorbed on the blackboard wiper, the dust was more, so Polluting the environment brings harm to the health of teachers and students. Many teachers suffer from respiratory diseases. Some blackboards that have been used for a long time or of poor quality are difficult to wipe clean, which brings inconvenience to cleaning on duty. [0003] The existing vacuum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/02
Inventor 费虹
Owner 林依璇
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