CN202115221U - Blackboard eraser ash collector - Google Patents

Abstract

The utility model discloses a blackboard eraser ash collector, comprising a box body. A metal friction net with meshes is arranged in the box body, but is not contacted with the bottom surface of the box body. The blackboard eraser ash collector also comprises a box cover, the center of which is hollow. The area of the hollow portion is greater than that of a blackboard eraser. The metal friction net is parallel to the bottom surface of the box body, or is disposed at a certain angle relative to the bottom surface of the box body, with the angle being ranging from 20 DEG to 40 DEG. The upper edge of the box cover has a smooth surface. According to the utility model, a blackboard is held by hand to scrape off a part of chalk ash on the metal friction net, and the chalk ash already scraped off falls in the ash collector, causing no effect on the internal environment of a classroom. In addition, the blackboard eraser ash collector is reasonable in structure and design and is convenient to use.

Description

Ash collector of eraser

Technical field

The utility model relates to a kind of teaching appurtenance, especially a kind of Ash collector of eraser.

Background technology

Present widely used blackboard eraser many with plank or plastics be material below it fixedly the friction material of felt hair and so on process; The moving chalk writing of blackboard or other body surfaces that makes of armrest is wiped during use, yet this blackboard eraser can cause that in use chalk dust flies upward everywhere.Chalk is generally processed by gypsum; Its chemical composition is a calcium sulfate; Chalk dust has stronger adsorption capacity; A lot of harmful germs can both be adsorbed on the fine chalk dust and be brought into teachers and students' lung, thereby facilitate the generation of acute and chronic inflammation, and therefore there is the problem that influence indoor environment, unfavorable teachers and students health in use in existing blackboard eraser.In addition, now the teacher uses up blackboard eraser at school the time and often just blackboard eraser perhaps one is thrown away on the dais in the blackboard groove conveniently, so the blackboard eraser that is stained with chalk dust has taken chalk dust on the dais to again immediately, the utmost point like this is unfavorable for the academic environment in the classroom.

The utility model content

The purpose of the utility model provides a kind of Ash collector of eraser; Give the interim storeroom after one of blackboard eraser is finished using; Remove a part through friction structure simultaneously and stick to the chalk dust on the blackboard eraser, can alleviate the chalk ash pollution degree in the classroom to a certain extent.

The utility model solves the technical scheme that its technical problem adopted:

A kind of Ash collector of eraser comprises box body, wherein; Said box body inside be provided with one have a mesh the metal friction net, said metal friction net does not contact with said box bottom, also comprises lid; Said lid middle part hollow out, the area of said openwork part is greater than the area of a blackboard eraser.

Above-mentioned Ash collector of eraser, wherein, said metal friction net is parallel to said box bottom.

Above-mentioned Ash collector of eraser, wherein, said metal friction net and said box bottom form certain angle.

Above-mentioned Ash collector of eraser, wherein, the angle that said metal friction net and said box bottom form is that 20 degree are to 40 degree.

Above-mentioned Ash collector of eraser, wherein, the upper edge smooth surface of said lid.

Above-mentioned Ash collector of eraser, wherein, said box body and said lid are processed by plastics or timber.

Above-mentioned Ash collector of eraser, wherein, said metal friction net is a wire netting.

The utility model scrapes off the part chalk dust through manually gripping blackboard eraser on the net at metal friction, and the chalk dust that scrapes drops in the dust arrester, can not influence the classroom indoor environment, and reasonable in design is easy to use.

Description of drawings

Figure 1A, Figure 1B are the structural representations of two embodiment of the utility model Ash collector of eraser;

Fig. 2 is the vertical view of Figure 1A and Figure 1B.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further, but not as the qualification of the utility model.

Please referring to Figure 1A, Figure 1B and shown in Figure 2, the utility model Ash collector of eraser specifically comprises box body 1, box body 1 inside be provided with one have a mesh metal friction net 2, metal friction net 2 is processed by common on the market metal, can be wire netting etc.Metal friction net 2 does not contact with box body 1 bottom surface; Can be parallel to box bottom; Also can form certain angle by box bottom; Particularly, metal friction net 2 can form the angle of 20 degree to 40 degree with box bottom, and Figure 1A and Figure 1B show the example structure that metal friction net 2 is positioned at two kinds of positions respectively.Box body 1 also comprises lid 3 parts, lid 3 middle part hollow outs, and the area of openwork part is greater than the area of a blackboard eraser, guarantees that like this holding blackboard eraser can stretch in the box body 1, and the upper edge smooth surface of lid 3 is with the protection hand skin wound of not rubbed.Box body 1 is processed low preparation cost with lid 3 by plastics or timber.

During use; Grasping blackboard eraser stretches in the box body 1; Slightly at full tilt the blackboard eraser bottom surface is placed friction back and forth on the metal friction net 2; So chalk dust falls down on by blackboard eraser under friction force and falls into box body 1 bottom, the design of lid 3 parts can prevent effectively that chalk dust flies upward out in the blackboard eraser friction process from box body 1.The teacher also can directly insert it in this dust-collecting box after using up blackboard eraser at ordinary times, can not locate to pollute to dais table top etc. again.After using a period of time, with chalk dust removing totally can the continuation use of box body 1 accumulated.

The above is merely the utility model preferred embodiment; Be not thus the restriction the utility model claim; So the equivalent structure that all utilization the utility model specifications and diagramatic content have been done changes, and all is included in the protection domain of the utility model.

Claims (7)

1. Ash collector of eraser; Comprise box body, it is characterized in that, said box body inside be provided with one have a mesh the metal friction net; Said metal friction net does not contact with said box bottom; Also comprise lid, said lid middle part hollow out, the area of said openwork part is greater than the area of a blackboard eraser.

2. Ash collector of eraser according to claim 1 is characterized in that, said metal friction net is parallel to said box bottom.

3. Ash collector of eraser according to claim 1 is characterized in that, said metal friction net and said box bottom form certain angle.

4. Ash collector of eraser according to claim 3 is characterized in that, the angle that said metal friction net and said box bottom form is that 20 degree are to 40 degree.

5. Ash collector of eraser according to claim 1 is characterized in that, the upper edge smooth surface of said lid.

6. Ash collector of eraser according to claim 1 is characterized in that, said box body and said lid are processed by plastics or timber.

7. according to the described Ash collector of eraser of claim 1 to 6, it is characterized in that said metal friction net is a wire netting.

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