CN87212054U - Automatic dust exhaust eraser for blackboard - Google Patents
Automatic dust exhaust eraser for blackboard Download PDFInfo
- Publication number
- CN87212054U CN87212054U CN 87212054 CN87212054U CN87212054U CN 87212054 U CN87212054 U CN 87212054U CN 87212054 CN87212054 CN 87212054 CN 87212054 U CN87212054 U CN 87212054U CN 87212054 U CN87212054 U CN 87212054U
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- CN
- China
- Prior art keywords
- eraser
- blackboard
- dust
- utility
- 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.)
- Pending
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- Devices For Dispensing Beverages (AREA)
Abstract
The utility model provides an eraser for blackboard, which can automatically erase and exhaust the dust. In use, as long as pressing lightly the eraser for blackboard on the blackboard, a miniature motor can drive a circular palm eraser and a helix angle blade to rotate together, in order to automatically erase the writing and exhaust the dust to achieve the labor saving and dust exhaust purposes. When the dust is accumulated much in an annular filter, the annular filter can be taken off to clean. The utility model is cylindrical, and the purposes of easy producing, material saving and utilizing waste are achieved by utilizing the waste beverage cans or the beer cans to produce the casing.
Description
The utility model relates to a kind of culture and education articles for use, sucking chalk powder and wipe the problem of moving effort when being intended to solve the teacher and erasing the board on class.Also having related to twice laid, specifically, is the problem of utilizing about waste beverage can or beer can.
Existing slim electric blackboard eraser (authorize, application number is 85201107) is to adopt a slim direct current generator to drive a double helix angle fan blade now, and the dust on the slot type felt blackboard eraser is sucked Storage Box.Only reached the purpose of dust suction.But when erasing the board with it, also need with certain strength brushing on blackboard, this is not light work, and make its plastic casing and also need special equipment and raw material, as for waste beverage can or beer can, all threw away conveniently in the past, become rubbish.
The limitation that the utility model overcomes above-mentioned prior art is by providing a circular palm brush (2) and one to protect dirt device (1) and waste beverage can or beer can.Protecting dirt device (1) can compress in housing (11) or stretch out, and generally speaking, always by spring (3), (4) tension, and stretches out in circular palm brush (2) front.During use, protect dirt device (1) and at first contact blackboard surface,, protect dirt device (1) and will be pressed into housing (11) as long as one press gently, circular palm brush (2) just can contact blackboard surface, and contact (5), (6) and (7), (8) of two paralleling switches are contacted.At this moment, micromachine (12) will be driven, and drive circular palm brush (2) and helical angle fan blade (15) rotation at a high speed, and circular palm brush (2) and blackboard surface friction have been wiped writing, reach laborsaving purpose.Helical angle fan blade (15) sucks the annular filter (10) of being with steel-wire carcass with dust, reaches the dust suction purpose.
Dust is many in annular filter (10) inner product, can open hasp (9), and the annular filter (10) that will be enclosed within on shell (11) air channel takes off, and removes.
The utility model makes full use of waste beverage can or beer can is to take off its upper base and go to the bottom, and its housing is divided into two parts, and a part is as housing of the present utility model (11), and another part is as the dirt device (1) that protects of the present utility model.Go to the bottom as bonnet of the present utility model with it.Thereby the purpose that reach twice laid, turns waste into wealth.
Structural principle of the present utility model is: micromachine (12) drives circular palm brush (2) and helical angle fan blade (15) rotation at a high speed, is contacted with blackboard surface by circular palm brush (2) and wipes writing.Employing is protected dirt device (1) and is blocked the dust of kicking up owing to the rotation of circular palm brush (2), and the negative pressure that is produced by helical angle fan blade (15) bottom sucks annular filter (10) with dust simultaneously, thereby reaches laborsaving and purpose dust suction.
What the utility model adopted protects dirt device (1) in use.All the time contact with blackboard surface and the slit very little, thereby can produce bigger suction.The hairbrush of circular palm brush (2) also is a fan blade shape, thereby also has certain suction, so, the utlity model has pick-up performance preferably.
The utility model makes full use of waste beverage can or beer can as its shell (11) with protect dirt device (1), and is cylindrical, has the characteristics simple, with low cost of making.
The utility model adopts the small-sized laminated cell of 6V or two kinds of power supplys of 6V alternating current-direct current transformer, and is convenient, flexible.
Fig. 1 represents the section of facing of the present utility model, and wherein, (13) are the small-sized laminated cell of 6V, and (14) are the socket of power supply for 6V alternating current-direct current transformer.(16) be for improving the pot shape baffle plate that dust collection efficiency is done.Fig. 2 represents the front view of circular palm brush (2) one ends.
Claims (2)
1, a kind of automatic dust-absorption eraser.By housing, micromachine, helical angle fan blade, circular palm brush, protect the dirt device and annular filter is formed.It is characterized in that micromachine and circular palm brush and the helical angle fan blade is coaxial and in housing.Cylindrical, the housing front end has one to protect and an annular filter is arranged on dirt device, the housing air channel, have a circular palm brush.
2, by the described dust absorption blackboard eraser of claim 1, it is characterized in that the hairbrush of circular palm brush is fan blade shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87212054 CN87212054U (en) | 1987-08-15 | 1987-08-15 | Automatic dust exhaust eraser for blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87212054 CN87212054U (en) | 1987-08-15 | 1987-08-15 | Automatic dust exhaust eraser for blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87212054U true CN87212054U (en) | 1988-07-20 |
Family
ID=4826759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87212054 Pending CN87212054U (en) | 1987-08-15 | 1987-08-15 | Automatic dust exhaust eraser for blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87212054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053913A (en) * | 2017-05-04 | 2017-08-18 | 聊城职业技术学院 | Intelligent electric blackboard eraser is used in one kind teaching |
-
1987
- 1987-08-15 CN CN 87212054 patent/CN87212054U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107053913A (en) * | 2017-05-04 | 2017-08-18 | 聊城职业技术学院 | Intelligent electric blackboard eraser is used in one kind teaching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |