CN2269316Y - Full automatic dustless blackboard erasor - Google Patents
Full automatic dustless blackboard erasor Download PDFInfo
- Publication number
- CN2269316Y CN2269316Y CN 96248641 CN96248641U CN2269316Y CN 2269316 Y CN2269316 Y CN 2269316Y CN 96248641 CN96248641 CN 96248641 CN 96248641 U CN96248641 U CN 96248641U CN 2269316 Y CN2269316 Y CN 2269316Y
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- CN
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- Prior art keywords
- blackboard
- circulation
- fixed
- full
- shell
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model provides a full automatic dustless blackboard which is composed of a cyclic blackboard, an electric brush and a casing, wherein, the electric brush is fixed on the back face of the cyclic blackboard, the front face of the casing is provided with an opening, and the cyclic blackboard is fixed on the opening of the front face of the casing. Compared with the prior art, the full automatic dustless blackboard has the advantages of reasonable design, simple structure, easy processing, small size, convenient use, etc. The injury of chalk dust to human bodies when a blackboard is erased by hand can be completely avoided, and the labor intensity of teachers can also be lightened. The blackboard can cause chalk dust produced during writing to be absorbed by a duster through gaps around the blackboard, so that expansion of chalk dust to a classroom is reduced.
Description
The utility model relates to a kind of school supply and stationery, specifically a kind of full-automatic dust-free blackboard.
For thousands of years from ancient times to the present, the teacher who stands on the dais wants a large amount of chalk foam flying dust of inspiration every day, as everyone knows, chalk be by lime stone, gypsum and necessarily than binding agent make and produce, it not only has obstinate toxicity, and it is little to have granularity, being easy to form aerosol with air is suspended in the air for a long time, these are suspended in airborne chalk foam dust once just suffered from various breathing problems in the academics and students's inspiration lung in the classroom easily, as tuberculosis, pulmonary tuberculosis, asthma, rhinitis, can cause lung cancer when serious.
News report is arranged, certain middle school has one to piece together the aged teacher who has won year surplus in the of 30 on the dais, in once teaching, fall in a swoon suddenly on the dais, this aged teacher showed blue in the face at that time, and lip is blue, expiratory dyspnea, alumnus and student send it to hospital and rescue, x-ray fluoroscopy through hospital is diagnosed as cancer of late stage, finds to have in the lung scleroma stone of heavily about more than 1,000 grams after doctor dissects, and predicates the coagulation of chalk dust through assay.Continuous progress along with science and technology, people begin to the challenge of chalk dust, successively there is the people to design to have produced the substitute of gypsum chalks such as dust-free chalk, magnetic blackboard, carbon element chalk, pollute with the dais that alleviates harm teachers and students health, but these unremitting efforts fundamentally do not solve the problem that chalk dust flies upward so far.
The purpose of this utility model provides a kind of full-automatic dust-free blackboard.
The purpose of this utility model realizes in the following manner, drive circulation curtain with decelerator with the circulation curtain on driving wheel and the support wheel and rotate the fixed blackboard that, cement wooden to replace or glass are made, the teacher writes in the curtain front, the curtain of writing full word is by the back side of decelerator driven rotary to blackboard, the curtain that does not write moves for the teacher and continues to write, the curtain of writing full word, uses in order to re-moving the front by by motor-operated powered brush chalk writing being wiped at the back side of circulation curtain formula blackboard.Can be by the chalk dust that powered brush brushes down by the electric dust collector absorption cleaning.
Accompanying drawing 1 is the plan structure schematic diagram of full-automatic dust-free blackboard;
Accompanying drawing 2 is the backsight structural representation of full-automatic dust-free blackboard.
Explain below with reference to Figure of description Full-automatic dust-free blackboard of the present utility model being done.
Full-automatic dust-free blackboard of the present utility model, its structure are outside being reached by circulation blackboard, powered brush Shell 10 consists of, and powered brush is fixed on the back side of circulation blackboard, the front openings of shell 10, and circulation is black Plate is fixed on the opening in shell 10 fronts.
The circulation blackboard of this full-automatic dust-free blackboard is to be made of circulation curtain 11, gripper shoe 12, decelerator 4, support wheel 9, driving wheel 1, support wheel 9 is by the right-hand member of turnbuckle 8 fixed housings 10, driving wheel 1 is joined by belt 3 and belt pulley 2 and decelerator 4 and is fixed on the left side of shell 10, and circulation curtain 11 is on support wheel 9, gripper shoe 12 and driving wheel 1.
The powered brush of this full-automatic dust-free blackboard is to be made of motor 7 and brush roll 5, and motor 7 is connected transmission by belt 6 and belt pulley 13 with brush roll 5, and brush roll 5 leans against on the circulation curtain 11, and motor 7 and brush roll 5 are fixed on the backboard of shell 10.
Embodiment:
Its processing and fabricating of full-automatic dust-free blackboard of the present utility model is very simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.The circulation curtain can be made of the canvas of black, and support wheel, driving wheel can be made by rubber, and gripper shoe can be made of offset plate or plastic plate, and shell can be with plank or plastic plate or other materials processing and fabricating.For reducing, can on shell, connect a dust catcher with dust purification by the secondary pollution of the chalk dust under the powered brush brush.The effect of turnbuckle is circulation curtain and gripper shoe to be abutted against together so that chalk writes the tension of circulation curtain by adjusting.Use also very simply, just can control the displacement of circulation curtain by the rotation time of control decelerator, the motor of decelerator and powered brush be rotation synchronously.
Full-automatic dust-free blackboard of the present utility model is compared with existing technology, and has reasonable in design, knot The characteristics such as structure is simple, be easy to process, volume is little, easy to use can be avoided fully because manually blacking Chalk dust is to the injury of human body during plate, and the labour intensity that alleviates the teacher, and this blackboard can will be write The dust that produces during word by the slit around the blackboard by the dust catcher inspiration to reduce dust to the classroom Interior diffusion, thereby, have good value for applications.
Except the described technical characterictic of specification, be the known technology of those skilled in the art.
Claims (3)
1. full-automatic dust-free blackboard comprises circulation blackboard, powered brush and shell, it is characterized in that powered brush is fixed on the back side of circulation blackboard, the front openings of shell, and the circulation blackboard is fixed on the opening of outer casing frontispiece.
2. full-automatic dust-free blackboard according to claim 1, the blackboard that it is characterized in that circulating is to be made of circulation curtain, gripper shoe, decelerator, support wheel, driving wheel, support wheel is by the right-hand member of turnbuckle fixed housing, driving wheel is joined by belt and belt pulley and decelerator and is fixed on the left side of shell, and the circulation curtain is on support wheel, gripper shoe and driving wheel.
3. full-automatic dust-free blackboard according to claim 1, it is characterized in that powered brush is to be made of motor and brush roll, motor is connected transmission by belt and belt pulley with brush roll, and brush roll leans against on the circulation curtain, and motor and brush roll are fixed on the backboard of shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96248641 CN2269316Y (en) | 1996-12-18 | 1996-12-18 | Full automatic dustless blackboard erasor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96248641 CN2269316Y (en) | 1996-12-18 | 1996-12-18 | Full automatic dustless blackboard erasor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2269316Y true CN2269316Y (en) | 1997-12-03 |
Family
ID=33920451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96248641 Expired - Fee Related CN2269316Y (en) | 1996-12-18 | 1996-12-18 | Full automatic dustless blackboard erasor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2269316Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442114A (en) * | 2014-12-15 | 2015-03-25 | 广西大学 | Blackboard with automatic erasing function |
| CN108749406A (en) * | 2018-05-24 | 2018-11-06 | 衢州学院 | A kind of board of education of English teaching |
| CN112497959A (en) * | 2020-12-17 | 2021-03-16 | 江苏凯乐英教育科技有限公司 | AI artificial intelligence teaching product device |
-
1996
- 1996-12-18 CN CN 96248641 patent/CN2269316Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442114A (en) * | 2014-12-15 | 2015-03-25 | 广西大学 | Blackboard with automatic erasing function |
| CN108749406A (en) * | 2018-05-24 | 2018-11-06 | 衢州学院 | A kind of board of education of English teaching |
| CN112497959A (en) * | 2020-12-17 | 2021-03-16 | 江苏凯乐英教育科技有限公司 | AI artificial intelligence teaching product device |
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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 |