CN2772836Y - Blackboard eraser with dust-collecting casing - Google Patents
Blackboard eraser with dust-collecting casing Download PDFInfo
- Publication number
- CN2772836Y CN2772836Y CN 200520033344 CN200520033344U CN2772836Y CN 2772836 Y CN2772836 Y CN 2772836Y CN 200520033344 CN200520033344 CN 200520033344 CN 200520033344 U CN200520033344 U CN 200520033344U CN 2772836 Y CN2772836 Y CN 2772836Y
- Authority
- CN
- China
- Prior art keywords
- dust
- blackboard brush
- blackboard
- brush
- collecting casing
- 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
Links
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a blackboard brush with a dust-collecting casing. The blackboard brush is fixed on the inner side of a top board of the dust-collecting casing which is composed of the top board, an enclosed board and a bottom frame board, and the blackboard brush and the bottom frame board are connected by a string so as to ensure the gap between the blackboard brush and the bottom frame board. The dust enters the cavity between the blackboard brush and the dust-collecting casing to store so that no dust flies. The utility model is an ideal tool for preventing dust pollution.
Description
Technical field:
The utility model is the brush of teaching with the usefulness that erases the board.
Background technology:
In school, teacher will write on blackboard on class, when not wanting after writing, promptly need wipe, when erasing the board, chalk dust just descends slowly and lightly in air with the mobile of brush, has polluted environment, every class gets off, teacher's clothes also will pollute on one's body the front-seat classmate sometimes entirely by chalk ash pollution, and this problem is not have fine solution for a long time, people make an effort for this reason, on the one hand be to change chalk, the aspect is to change brush in addition, but owing to technical, reason economically or the like, the problem of chalk ash pollution is not solved preferably, still need effort.
Summary of the invention:
The purpose of this utility model provides the blackboard brush of the band collection dust cover that a kind of basic elimination chalk dust flies upward.
The technical solution of the utility model as shown in Figure 1, blackboard brush is to be fixed on collection dust cowl top panel 2 inner faces of being made up of top board 2, coaming plate 3, underframe plate 4, top board 2 is connected by coaming plate 3 upper-lower seal with the outer of underframe 4, coaming plate 3 is to be made by the flexible material of semihard band, be connected by many cords 5 between underframe plate 4 and the blackboard brush 1, guarantee the gap between blackboard brush 1 and the underframe plate 4.When the blackboard brush of band collection dust cover has been write on the word blackboard brushing, need on the one hand blackboard brush to be contacted with blackboard surface with certain pressure, coaming plate 3 also just makes underframe plate 4 near on the blackboard surface on the other hand, at this moment the chalk dust under the blackboard brush all enters between blackboard brush 1 and the collection dust cover and stores in the cavity, can not fly upward out.To preventing that dust pollution from being extremely desirable.
Description of drawings:
Fig. 1: the blackboard brush structural representation of band collection dust cover.
Wherein: 1, blackboard brush, 2, top board, 3, coaming plate, 4, the underframe plate, 5, cord.
The specific embodiment:
Implement by technique scheme, collection dust cover is a rectangle, blackboard brush than outsourcing is bigger, general wide about 8 centimetres, be about 11 centimetres, can stick with glue or screw is fixed on the inside to blackboard brush, the height of coaming plate 3 just surpasses 3～5 millimeters of the height of blackboard brush 1, and the thickness of underframe plate is less than 0.5 millimeter.The utility model can be made of plastic, and is easy to use, and the good results are evident to prevent chalk ash pollution.
Claims (1)
1, a kind of blackboard brush of the band collection dust cover of being made up of blackboard brush (1) is characterized in that blackboard brush (1) is fixed on collection dust cowl top panel (2) inner face of being made up of top board (2), coaming plate (3), underframe plate (4), the outer of top board (2) and underframe plate (4), be connected by coaming plate (3) upper-lower seal, between underframe plate (4) and the blackboard brush (1) by uniform connection of many cords (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033344 CN2772836Y (en) | 2005-03-02 | 2005-03-02 | Blackboard eraser with dust-collecting casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033344 CN2772836Y (en) | 2005-03-02 | 2005-03-02 | Blackboard eraser with dust-collecting casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2772836Y true CN2772836Y (en) | 2006-04-19 |
Family
ID=36708092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520033344 Expired - Fee Related CN2772836Y (en) | 2005-03-02 | 2005-03-02 | Blackboard eraser with dust-collecting casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2772836Y (en) |
-
2005
- 2005-03-02 CN CN 200520033344 patent/CN2772836Y/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 |