CN2743148Y - Environmental protection dust less blackboard eraser - Google Patents
Environmental protection dust less blackboard eraser Download PDFInfo
- Publication number
- CN2743148Y CN2743148Y CN 200420108587 CN200420108587U CN2743148Y CN 2743148 Y CN2743148 Y CN 2743148Y CN 200420108587 CN200420108587 CN 200420108587 CN 200420108587 U CN200420108587 U CN 200420108587U CN 2743148 Y CN2743148 Y CN 2743148Y
- Authority
- CN
- China
- Prior art keywords
- blackboard eraser
- blackboard
- erasing
- dust
- hairs
- 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 relates to an environmental-protection type dust-free blackboard eraser, comprising a blackboard eraser body and erasing hairs; wherein, the erasing hairs are arranged at the front face of the blackboard eraser body with a hollow inner cavity and the inner cavity is provided with a spongy mass with a better water storage performance. The side of the blackboard eraser is provided with a water filling mouth and the contacted surface of the blackboard eraser body and the erasing hairs is provided with a wire mesh for fixing the erasing hairs. Compared with the prior art, the utility model changes the operation theory of the traditional blackboard eraser erasing and absorbing dust without water to add the effect of water. When being erased, the blackboard can not only be clean and clear but not bring bout dust, so the utility model can not only guarantee the black and white contrast ratio of the blackboard but avoid the chalk dust bringing about harms to health and greatly improve the teaching effect of teachers and the learning efficiency of students.
Description
Technical field
The utility model relates to a kind of blackboard eraser, particularly relates to a kind of environmental-friendly dust-free blackboard eraser, is to the improvement of existing wiping blackboard structure, belongs to the school supply and stationery category, and suitable teacher uses when classroom instruction.
Background technology
At present, the used blackboard eraser of people is normal style: inlay a snag on the rectangle plank, when erasing the board, chalk dust flies upward everywhere, and particularly blackboard eraser all is xerotripsis, after clipping certain the time, has often just wiped not clean blackboard.At this moment, can be wiped into a lot of white powder trace by blackboard eraser on the blackboard, cause the black white contrast of blackboard not enough, the writing on the blackboard that teacher writes out is difficult for being recognized by the student, has both influenced the overall appearance of blackboard, influences student's results of learning again.And wipe chalk dust down and directly enter the oral cavity especially, the healthy of academics and students damaged to some extent.Though many innovation and creation at blackboard eraser are also arranged in recent years, all at reclaiming chalk dust, still the technical scheme appearance that solves the blackboard eraser xerotripsis is seen at the end, is to replace blackboard to wipe with moisture wet rag to erase the board in teaching practice.
The utility model content
The purpose of this utility model is to overcome the prior art above shortcomings, by existing wiping blackboard structure is improved, provides a kind of environmental-friendly dust-free blackboard eraser.This novel blackboard eraser has changed traditional blackboard and has dried the operation principle that absorbs dust, mix the effect of water cleverly, wipe blackboard with it, both clean, clear, can not take up dust again, not only guaranteed the black white contrast of blackboard, the chalk dust under also can avoiding wiping has improved teacher's teaching efficiency and student's learning efficiency greatly to people's the healthy infringement that causes.
This environmental-friendly dust-free blackboard eraser that the utility model provides, include blackboard eraser and snag, wherein snag is arranged on the front of blackboard eraser, be characterized in that described blackboard eraser has the inner chamber of a hollow, be provided with the cavernous body of retaining better performances in the inner chamber, side at blackboard eraser is provided with water filling port, on the contact-making surface of blackboard eraser and snag, be provided with the steel wire of fixedly snag, the moisture content that this steel wire neither influences cavernous body in the blackboard eraser inner chamber oozes out, snag can be securely fixed on the blackboard eraser again, increase the entire compression of blackboard eraser.
For better realizing the purpose of this utility model, described snag is for having certain seepage of water and anti-wear performance material preferably, for example sponge goods.
The blackboard eraser that the utility model provides can be made of plastic, and also available wood materials is made.If blackboard eraser assembles, then each assembly connection should be provided with the sealing device of waterproof.
Compared with prior art, the beneficial effects of the utility model are: wipe blackboard, both clean, clear, can not take up dust again, not only guaranteed the black white contrast of blackboard, chalk dust under also can avoiding wiping has improved teacher's teaching efficiency and student's learning efficiency greatly to people's the healthy infringement that causes.
Description of drawings
Accompanying drawing is the schematic appearance of an embodiment providing of the utility model.
Number in the figure: 1. water filling port, 2. blackboard eraser, 3. snag.
The specific embodiment
As shown in drawings, this environmental-friendly dust-free blackboard eraser, include blackboard eraser 2 and snag 3, wherein snag 3 is arranged on the front of blackboard eraser 2, blackboard eraser 2 has the inner chamber of a hollow, be provided with the cavernous body of retaining better performances in the inner chamber, be provided with water filling port 3 in the side of blackboard eraser 2, on the contact-making surface of blackboard eraser 2 and snag 3, be provided with the steel wire of fixedly snag 3, the moisture content that this steel wire neither influences cavernous body in blackboard eraser 2 inner chambers oozes out, snag 3 can be securely fixed on the blackboard eraser 2 again, increased the entire compression of blackboard eraser, be fixed on snag 3 on the blackboard eraser 2 and selected for use and have certain seepage of water and anti-wear performance sponge goods preferably.
During use, the water filling port 3 of blackboard eraser 2 need only be opened, a certain amount of water of packing into, store by the cavernous body in the inner chamber of hollow, again water filling port 3 is shut, the youth can relievedly use, when one side erases the board, water will slowly be wiped in the sponge goods partly by hair and ooze out, a lot of white powder trace just can not appear in blackboard again that wipe this moment, it is not only black but also bright to clash the blackboard that comes, and the more important thing is erases the board with this blackboard eraser does not have any dust, and teacher, classmate erase the board again and need not flash worry by the dust when erasing the board.
Claims (2)
1. environmental-friendly dust-free blackboard eraser, include blackboard eraser and snag, wherein snag is arranged on the front of blackboard eraser, it is characterized in that described blackboard eraser has the inner chamber of a hollow, be provided with the cavernous body of retaining better performances in the inner chamber, side at blackboard eraser is provided with water filling port, is provided with the steel wire of fixedly snag on the contact-making surface of blackboard eraser and snag.
2. environmental-friendly dust-free blackboard eraser according to claim 1 is characterized in that described snag is the sponge goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420108587 CN2743148Y (en) | 2004-11-01 | 2004-11-01 | Environmental protection dust less blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420108587 CN2743148Y (en) | 2004-11-01 | 2004-11-01 | Environmental protection dust less blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2743148Y true CN2743148Y (en) | 2005-11-30 |
Family
ID=35633168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420108587 Expired - Fee Related CN2743148Y (en) | 2004-11-01 | 2004-11-01 | Environmental protection dust less blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2743148Y (en) |
-
2004
- 2004-11-01 CN CN 200420108587 patent/CN2743148Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |