CN2158347Y - Magnetic dust-absorbing blackboard eraser - Google Patents
Magnetic dust-absorbing blackboard eraser Download PDFInfo
- Publication number
- CN2158347Y CN2158347Y CN 93204554 CN93204554U CN2158347Y CN 2158347 Y CN2158347 Y CN 2158347Y CN 93204554 CN93204554 CN 93204554 CN 93204554 U CN93204554 U CN 93204554U CN 2158347 Y CN2158347 Y CN 2158347Y
- Authority
- CN
- China
- Prior art keywords
- dust
- blackboard eraser
- cover plate
- hairbrush
- magnetic
- 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
- 239000000428 dust Substances 0.000 claims abstract description 26
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000012528 membrane Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a write and clear apparatus of scribbling writing, especially can prevent dust pollution's magnetic force dust absorption blackboard eraser, this blackboard eraser is held in the palm, the brush of setting on the apron, is located the box body and stretches out the apron outer with brush staggered arrangement's magnetic path and cover and constitute at the outside dust removal membrane of magnetic path by box body, apron constitution, uses the utility model discloses a magnetic force dust absorption blackboard eraser and the supporting parent magnetic chalk with it, when wiping chalk writing, the dust of chalk can be adsorbed by the blackboard eraser to the pollution of dust to the environment has been prevented.
Description
The utility model relates to a kind of apparatus of writing and removing writing, particularly can prevent the dust absorption blackboard eraser of dust pollution.
The chalk that is used for writing on the blackboard in teaching at present and the propaganda all is to make with common gesso, blackboard eraser then is to be made of hairbrush and supporting plate, it does not have the function of absorption dust, therefore in wipe examination chalk writing process with blackboard eraser, dust can fly upward everywhere along with the activity of blackboard eraser, contaminated environment not only also endangers the end user and other people is healthy.
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of dust from flying that can prevent to cause the magnetic force dust absorption blackboard eraser of environmental pollution.
Technical solution of the present utility model is: a kind of magnetic force dust absorption blackboard eraser, and it is made of plate holder, hairbrush, and its special character is.The holder of described blackboard wiping board is to be made of box body and cover plate, is arranging the several rows of hairbrush of space certain distance on the cover plate.At the hairbrush outer periphery and respectively arrange on the cover plate between the hairbrush and be provided with opening, be provided with the magnetic patch that shape, size all match with opening with the corresponding box plate of this opening, magnetic patch will stretch out from the opening part on the cover plate, is staggered with hairbrush formation.Simultaneously, the dirt ditch is held with formation in slit between the two.On the opening of cover plate, be provided with the dust-separation film that the magnetic patch cover can be risen,, be convenient to remove dust to prevent that dust directly is adsorbed on the magnetic patch.Periphery at cover plate is provided with the back-up ring that can prevent that dust from flying out.The chalk that is used with this blackboard eraser should be close magnetic pen, and it is to add an amount of powdery parent magnetic material to be mixed and made in the raw material of common chalk, to strengthen adsorption capacity.
The utility model compared with prior art has following characteristics: owing to added close magnetic material in the chalk, blackboard eraser has the magnetic force dust-absorbing function in addition, therefore when wiping the examination chalk writing, the dust of chalk can be adsorbed by blackboard eraser, can not fly upward everywhere again, thereby can prevent that dust is to the pollution of environment with to the harm of health of human body.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A cut-away view of Fig. 1.
Be described in further detail below in conjunction with accompanying drawing:
The chalk of present embodiment is that the close magnetic of adding 15% in common chalk is made, and common close magnetic adopts the compound of non-corrosive, indeformable iron.
Fig. 1 and Fig. 2 have provided a kind of magnetic force dust absorption blackboard eraser, and rectangular plate holder is to be cooperated with cover plate 2 by box body 1 to constitute.It can adopt metal or nonmetallic materials to make.Vertically arranging four row's felt matter hairbrush 3 on the cover plate at a certain distance, can stick with glue between hairbrush and the cover plate and connect.Be provided with oblong openings around hairbrush and on the cover plate between the hairbrush, opening is provided with hood-like dust-separation film 4.The periphery of cover plate also is provided with the back-up ring 5 of projection.Be arranged with in the box body with cover plate on the corresponding magnetic patch 6 of opening, magnetic patch can stick with glue and be connected on the box body.Box body is with after cover plate cooperates, and magnetic patch stretches in the hood-like dust-separation film by the opening on the cover plate, covers the dust-separation film of magnetic patch and the slit between the hairbrush and has formed and hold dirt ditch 7.During use, wiped dust down because the magneticaction of close magnetic wherein and magnetic patch is attracted to the surperficial of the outer dust-separation film of magnetic patch and holds in the dirt ditch by hairbrush, no longer everywhere Gu and fly upward.Wait to hold in the dirt ditch and the dust that adsorbs on the dust-separation film is more when needing to remove, box body and the cover plate of working in coordination separated, owing to no longer include magneticaction on the cover plate, thereby be adsorbed on the barrier film originally and the dust of putting aside in holding the dirt ditch will come off automatically.
Claims (3)
1, a kind of magnetic force dust absorption blackboard eraser, it is made of plate holder, hairbrush, it is characterized in that the holder of described blackboard wiping board is to be made of box body and cover plate, on the cover plate row example the several rows of hairbrush of space certain distance, at the hairbrush outer periphery and respectively arrange on the cover plate between the hairbrush and be provided with opening, be provided with the magnetic patch that shape, size all match with opening with the corresponding box plate of this opening, magnetic patch will stretch out from the opening part on the cover plate, is staggered with hairbrush formation.
2, magnetic force dust absorption blackboard eraser according to claim 1 is characterized in that being provided with the dust-separation film that the magnetic patch cover can be risen on the opening of cover plate.
3, magnetic force dust absorption blackboard eraser according to claim 1 is characterized in that being provided with the back-up ring that can prevent that dust from flying out at the periphery of cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93204554 CN2158347Y (en) | 1993-02-27 | 1993-02-27 | Magnetic dust-absorbing blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93204554 CN2158347Y (en) | 1993-02-27 | 1993-02-27 | Magnetic dust-absorbing blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2158347Y true CN2158347Y (en) | 1994-03-09 |
Family
ID=33788079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93204554 Expired - Fee Related CN2158347Y (en) | 1993-02-27 | 1993-02-27 | Magnetic dust-absorbing blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2158347Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105584267A (en) * | 2014-10-24 | 2016-05-18 | 胡敏 | Blackboard eraser capable of collecting chalk dust |
-
1993
- 1993-02-27 CN CN 93204554 patent/CN2158347Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105584267A (en) * | 2014-10-24 | 2016-05-18 | 胡敏 | Blackboard eraser capable of collecting chalk dust |
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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 |