CN2543723Y - Dust proof blackboard eraser - Google Patents
Dust proof blackboard eraser Download PDFInfo
- Publication number
- CN2543723Y CN2543723Y CN 02267284 CN02267284U CN2543723Y CN 2543723 Y CN2543723 Y CN 2543723Y CN 02267284 CN02267284 CN 02267284 CN 02267284 U CN02267284 U CN 02267284U CN 2543723 Y CN2543723 Y CN 2543723Y
- Authority
- CN
- China
- Prior art keywords
- dust
- snag
- utility
- rub body
- model
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a dust proof blackboard eraser which mainly solves the problem of dust flying when erase the blackboard. The utility model comprises an eraser body, brush furs which are fixed at one side of the eraser body and a dust proof rubber ring. The brush furs are convex beyond the dust proof rubber ring. The utility model is characterized in that the external side of the eraser body beyond the brush furs is provided with a circle of protective edge; a circular cavity is arranged between the protective edge and the brush furs; the other end of the protective edge is connected with the dust proof rubber ring; and one end of the eraser body is provided with a duct collecting box which is movably connected with the eraser body and is communicated with the circular cavity. The utility model can prevent the chalk dust from flying and can collect the chalk dust. The utility model is mainly suitable to be used for teaching.
Description
Affiliated technical field
The utility model relates to a kind of dust-proof blackboard eraser, belongs to teaching aid.
Technical background
The blackboard eraser that uses in imparting knowledge to students at present, when erasing the board, dust flies upward easily, becomes scattered about ground, both has been unfavorable for environmental sanitation, is unfavorable for that also teachers and students are healthy.
Summary of the invention
For overcoming the shortcoming that above-mentioned prior art exists, the purpose of this utility model provides a kind of chalk powder that can prevent and flies upward and can collect the dust-proof blackboard eraser of dust.
Main technical schemes of the present utility model is this kind dust-proof blackboard eraser, comprise rub body and the snag and the dust protection rubber circle that are fixed on rub body one side, snag protrudes in outside the dustproof elastic tape, the described rub body limit of encircling for protection in the outside of snag, between safe edge and the snag toroidal cavity is arranged, the other end of safe edge is connected with dustproof elastic tape; One end of rub body be provided with its flexible connection and communicate with toroidal cavity connect powder box.
For ease of holding, the opposite side of rub body is provided with the handle of band handgrip.
The beneficial effects of the utility model are: owing to the limit of encircling for protection in the outside of snag, between safe edge and the snag toroidal cavity is arranged, dust runs not come out when erasing the board, and has prevented air pollution preferably, the environmental sanitation around having kept simultaneously.
Description of drawings
Be elaborated below in conjunction with accompanying drawing.
Accompanying drawing is a structural representation of the present utility model.
Among the figure, the 1-rub body, the 2-snag, 3-safe edge, the 4-elastic tape that prevents dust, the 5-toroidal cavity, 6-connects powder box, the 7-handle
The specific embodiment
In the accompanying drawings, this kind dust-proof blackboard eraser, comprise rub body (1) and be fixed on the snag (2) of rub body one side, the rub body limit (3) of encircling for protection in the outside of snag, toroidal cavity (5) is arranged between safe edge and the snag, the other end of safe edge (3) has a dustproof elastic tape (4) of fixedlying connected with it, and snag (2) protrudes in outside the dustproof elastic tape (4).One end of rub body be provided with its flexible connection connect powder box (6), connected mode can also can be a radial type for simple in structure snap-in.This connects powder box (6) and communicates with toroidal cavity (5).
When erasing the board, the snag pressurized, the safe edge of the dustproof elastic tape of band covers snag, and dust can not fly upward, and enters simultaneously to connect powder box, and dust takes off and connects powder box and outwell more for a long time in connecing powder box, again by last getting final product.
For conveniently holding, the opposite side of rub body is the handle (7) of band handgrip.
Claims (2)
1, a kind of dust-proof blackboard eraser, comprise rub body and the snag and the dust protection rubber circle that are fixed on rub body one side, snag protrudes in outside the dustproof elastic tape, it is characterized in that: the described rub body limit of encircling for protection in the outside of snag, between safe edge and the snag toroidal cavity is arranged, the other end of safe edge is connected with dustproof elastic tape; One end of rub body be provided with its flexible connection and communicate with toroidal cavity connect powder box.
2, dust-proof blackboard eraser according to claim 1 is characterized in that: the opposite side of described rub body is the handle of band handgrip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267284 CN2543723Y (en) | 2002-05-29 | 2002-05-29 | Dust proof blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267284 CN2543723Y (en) | 2002-05-29 | 2002-05-29 | Dust proof blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2543723Y true CN2543723Y (en) | 2003-04-09 |
Family
ID=33732905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02267284 Expired - Fee Related CN2543723Y (en) | 2002-05-29 | 2002-05-29 | Dust proof blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2543723Y (en) |
-
2002
- 2002-05-29 CN CN 02267284 patent/CN2543723Y/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 |