CN101244670A - Dust-less blackboard - Google Patents
Dust-less blackboard Download PDFInfo
- Publication number
- CN101244670A CN101244670A CNA2007100848881A CN200710084888A CN101244670A CN 101244670 A CN101244670 A CN 101244670A CN A2007100848881 A CNA2007100848881 A CN A2007100848881A CN 200710084888 A CN200710084888 A CN 200710084888A CN 101244670 A CN101244670 A CN 101244670A
- Authority
- CN
- China
- Prior art keywords
- blackboard
- dust
- roller
- blackboard surface
- eraser
- 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.)
- Pending
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Abstract
The invention relates to a teaching blackboard without dust flying, which utilizes the rotation of a roller to drive the blackboard surface to move; the fixed blackboard eraser can be used to erase the chalk writing and the dust is then covered and collected.
Description
The present invention relates to a kind of teaching board device, especially can save the trouble that erases the board
At present, known Glass blackboard, cement blackboard, a large amount of wiping of writing on the blackboard letter written with chalk are wasted time and energy, and dust from flying when erasing the board, contaminated environment, harm teachers and students' health.
The purpose of this invention is to provide a kind of dust-free blackboard, it can not only free in the above writing on the blackboard, freely put the magnetic teaching aid (blackboard surface is with iron sheet or support hardboard and enclose iron sheet), and when wiping the letter written with chalk writing, no dust from flying
The present invention is achieved in that
1, blackboard is made the same shape of conveyer belt, conveyer belt is a blackboard surface, and blackboard surface is enclosed within on two rollers separated by a distance, and the roller on both sides is fixed on the support, and even roughness is wanted in the roller side.The tension force size that the roller on the right can be regulated blackboard surface.
2, blackboard both sides (or left side) installs blackboard eraser, and blackboard eraser is pressed onto on blackboard surface and the roller, and blackboard eraser maintains static (can regulate the pressure size to blackboard surface and roller)
3, blackboard eraser covers with seal bootr, and the box that connects a false bottom below the seal bootr is collected dust (or collect dust with sack)
4, between two rollers and two-layer blackboard surface, fix one and support hardboard, so that stable during writing on the blackboard.
5, gear and rocking handle (or motor is installed) are installed in the lower end of roller on the right, drive roller and blackboard surface and rotate
6, rotation crank, roller rotates, and drives blackboard surface and rotates, thereby wipe the letter written with chalk writing
Because adopt such scheme, the letter written with chalk writing on the blackboard surface can easily be wiped, and do not have dust (raise, simple in structure.
The present invention is further described below in conjunction with drawings and Examples:
Fig. 1 is that the present invention overlooks diagrammatic sectional view.
Fig. 2 is the top plan view of the embodiment of the invention.
Fig. 3 is the elevation cross-sectional view of the embodiment of the invention.
Among the figure, 1, blackboard surface 2, roller 3, blackboard eraser 4, dust cover 5, false bottom box (or sack) 6, adjustable screw 7, support hardboard 8, support 9, gear 10, rocking handle
In Fig. 1, roller rotates, and blackboard surface promptly rotates
In Fig. 2, blackboard surface rotates and is promptly wiped the letter written with chalk writing by blackboard eraser, and dust is covered by the dust cover
In the embodiment shown in fig. 3, rotation crank (or closed motor switch), blackboard surface promptly move, and the letter written with chalk writing on the blackboard surface is just wiped by blackboard eraser, and dust is covered by the dust cover, falls in the following false bottom box (or in sack)
Claims (2)
1. dust-free blackboard, roller rotate and drive blackboard surface and move, thereby wipe the letter written with chalk writing.It is characterized in that: blackboard surface moves, and blackboard eraser is fixed, and dust is collected.
2. dust-free blackboard according to claim 1, it is characterized in that: blackboard eraser is fixed, and blackboard surface moves, thereby wipes the letter written with chalk writing, and does not have dust from flying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100848881A CN101244670A (en) | 2007-02-15 | 2007-02-15 | Dust-less blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100848881A CN101244670A (en) | 2007-02-15 | 2007-02-15 | Dust-less blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101244670A true CN101244670A (en) | 2008-08-20 |
Family
ID=39945435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100848881A Pending CN101244670A (en) | 2007-02-15 | 2007-02-15 | Dust-less blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101244670A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108859529A (en) * | 2018-06-07 | 2018-11-23 | 林雪莲 | Board is used in a kind of teaching |
| CN110744952A (en) * | 2019-10-24 | 2020-02-04 | 郑州航空工业管理学院 | Advanced mathematics teaching aid |
-
2007
- 2007-02-15 CN CNA2007100848881A patent/CN101244670A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108859529A (en) * | 2018-06-07 | 2018-11-23 | 林雪莲 | Board is used in a kind of teaching |
| CN110744952A (en) * | 2019-10-24 | 2020-02-04 | 郑州航空工业管理学院 | Advanced mathematics teaching aid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |