CN202115220U - Magnetic chalk eraser package - Google Patents
Magnetic chalk eraser package Download PDFInfo
- Publication number
- CN202115220U CN202115220U CN2011201717418U CN201120171741U CN202115220U CN 202115220 U CN202115220 U CN 202115220U CN 2011201717418 U CN2011201717418 U CN 2011201717418U CN 201120171741 U CN201120171741 U CN 201120171741U CN 202115220 U CN202115220 U CN 202115220U
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- CN
- China
- Prior art keywords
- magnetic
- chalk
- eraser
- wiped
- external member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a magnetic chalk eraser package, comprising a chalk eraser and chalks. The chalk eraser includes an eraser body and eraser hair in a mutual joint. The eraser body includes an eraser box and an erasing plate in a mutual connection. The eraser hair is evenly distributed in the erasing plate. The eraser box and the erasing plate form a sealing hollow structure. The inner sealing hollow structure is divided into two inner chambers through a baffle plate, wherein the inner chamber adjacent to the back of the eraser body is a first inner chamber, and the other is a second inner chamber. The first inner chamber is provided with a permanent magnet, and the erasing plate is provided with a plurality of small holes. The chalks are made from materials having magnetic powders. The magnetic chalk eraser package is advantageous in that the producing process is simple; the rate of chalk powders' flying around can be reduced by means of magnetic materials, which facilitates green environmental protection.
Description
Technical field
The utility model relates to a kind of teaching aid, and especially a kind of magnetic chalk of chalk and chalkboard eraser that comprises is simultaneously wiped external member.
Background technology
Mostly present widely used chalkboard eraser is rectangle; With plank or plastics is material fixing friction material of felt hair and so on below it; The moving chalk writing of blackboard or other body surfaces that makes of armrest is wiped during use, yet this chalkboard 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 all there is the problem that influences indoor environment, unfavorable teachers and students health in existing chalkboard eraser in use with chalk.
The utility model content
The purpose of the utility model provides a kind of magnetic chalk and wipes external member, on the basis of the function that possesses existing blackboard eraser and chalk, can prevent effectively that chalk dust from flying upward everywhere, uses safety and saves worry.
The utility model solves the technical scheme that its technical problem adopted:
A kind of magnetic chalk is wiped external member, comprises chalkboard eraser and chalk, and chalkboard eraser comprises rub body and the snag that is bonded with each other; Wherein, said rub body is for comprising interconnective wiping box and wiping board, and said snag is evenly distributed on the said wiping board; Said wiping box and said wiping board constitute airtight hollow structure, and inside is divided into two inner rooms through baffle plate, and near said rub body back is first inner room; Another is second inner room, in said first inner room, is provided with a permanent magnet, and said wiping board is provided with some apertures; The making material of said chalk contains magnetic.
Above-mentioned magnetic chalk is wiped external member, and wherein, said magnetic is the chromium dioxide magnetic.
Above-mentioned magnetic chalk is wiped external member, and wherein, said magnetic is cobalt-iron oxide magnetic powder.
Above-mentioned magnetic chalk is wiped external member, and wherein, said magnetic is an iron oxide magnetic powder.
Above-mentioned magnetic chalk is wiped external member, and wherein, said magnetic is a NdFeB magnetic powder.
Above-mentioned magnetic chalk is wiped external member, and wherein, said some apertures are five to eight.
Above-mentioned magnetic chalk is wiped external member, and wherein, said permanent magnet is a ndfeb magnet.
Above-mentioned magnetic chalk is wiped external member, and wherein, said rub body is processed by plastics or timber.
The utility model manufacturing process is simple, utilizes magnetic material to reduce the probability that chalk dust flies upward, environmental protection everywhere.
Description of drawings
Fig. 1 is the structural representation that the utility model magnetic chalk is wiped chalkboard eraser in the external member.
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.
The utility model magnetic chalk is wiped external member and is specifically comprised chalkboard eraser 1 and chalk; The structure of chalkboard eraser 1 is as shown in Figure 1, and chalkboard eraser 1 comprises the rub body that is bonded with each other 11 and snag 12, and snag 12 can be exactly a general felt hair etc.; Rub body 11 is processed by plastics or timber; Wherein, rub body 11 is for comprising interconnective wiping box 111 and wiping board 112, and snag 12 is evenly distributed on the wiping board 112.Wipe box 111 and constitute airtight hollow structure with wiping board 112; Inside is divided into two inner rooms through baffle plate 113; Near rub body 11 backs be first inner room 114, another is second inner room 115, in first inner room 114, is provided with a permanent magnet 2; Permanent magnet 2 adopts the powerful ndfeb magnet of suction, and result of use is good.In addition, wiping board 112 is provided with some apertures 1121, and some apertures 1121 are five to eight and are advisable.
The structure of chalk such as the structure of common chalk are as good as; Therefore not in mapping separately; Its main feature is to make in the material to contain magnetic, and magnetic is common on the market industrial magnetic material, such as chromium dioxide magnetic, cobalt-iron oxide magnetic powder, iron oxide magnetic powder or NdFeB magnetic powder.
During use; Chalk with in the utility model external member writes on blackboard, when needing to revise, and the letter written with chalk on then erasing the board with the chalkboard eraser in the utility model external member 1; Owing to contain magnetic in the chalk, contain a permanent magnet 2 in first inner room 114 in the chalkboard eraser 1.In wiping process; Contain under the magnetic field active force of the permanent magnet 2 of chalk dust in chalkboard eraser 1 body of magnetic and get in second inner room 115 of chalkboard eraser 1 the some apertures 1121 from wiping board 112; Even if having the existence of baffle plate 113 also not influence the attraction of 2 pairs of chalk dusts of permanent magnet, can prevent effectively that like this chalk dust from flying into the interior teachers and students' health that influences of air.After using a period of time, the chalk dusts in second inner room 115 are long-pending to a certain degree by the time, open wipe box 111 and wiping board 112 just can be to wherein cleaning, easy to operately save worry.
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 (8)
1. a magnetic chalk is wiped external member, comprises chalkboard eraser and chalk, and chalkboard eraser comprises rub body and the snag that is bonded with each other; It is characterized in that said rub body is for comprising interconnective wiping box and wiping board, said snag is evenly distributed on the said wiping board; Said wiping box and said wiping board constitute airtight hollow structure; Inner be divided into two inner rooms through baffle plate, near said rub body back be first inner room, another is second inner room; In said first inner room, be provided with a permanent magnet, said wiping board is provided with some apertures; The making material of said chalk contains magnetic.
2. magnetic chalk according to claim 1 is wiped external member, it is characterized in that said magnetic is the chromium dioxide magnetic.
3. magnetic chalk according to claim 1 is wiped external member, it is characterized in that said magnetic is cobalt-iron oxide magnetic powder.
4. magnetic chalk according to claim 1 is wiped external member, it is characterized in that said magnetic is an iron oxide magnetic powder.
5. magnetic chalk according to claim 1 is wiped external member, it is characterized in that said magnetic is a NdFeB magnetic powder.
6. magnetic chalk according to claim 1 is wiped external member, it is characterized in that said some apertures are five to eight.
7. magnetic chalk according to claim 1 is wiped external member, it is characterized in that said permanent magnet is a ndfeb magnet.
8. magnetic chalk according to claim 1 is wiped external member, it is characterized in that said rub body is processed by plastics or timber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201717418U CN202115220U (en) | 2011-05-26 | 2011-05-26 | Magnetic chalk eraser package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201717418U CN202115220U (en) | 2011-05-26 | 2011-05-26 | Magnetic chalk eraser package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202115220U true CN202115220U (en) | 2012-01-18 |
Family
ID=45456312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201717418U Expired - Fee Related CN202115220U (en) | 2011-05-26 | 2011-05-26 | Magnetic chalk eraser package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202115220U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110091646A (en) * | 2019-05-20 | 2019-08-06 | 李向军 | A kind of myopia prevention homework book |
-
2011
- 2011-05-26 CN CN2011201717418U patent/CN202115220U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110091646A (en) * | 2019-05-20 | 2019-08-06 | 李向军 | A kind of myopia prevention homework book |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20120526 |