CN204955867U - Dust -proof blackboard eraser - Google Patents
Dust -proof blackboard eraser Download PDFInfo
- Publication number
- CN204955867U CN204955867U CN201520743988.0U CN201520743988U CN204955867U CN 204955867 U CN204955867 U CN 204955867U CN 201520743988 U CN201520743988 U CN 201520743988U CN 204955867 U CN204955867 U CN 204955867U
- Authority
- CN
- China
- Prior art keywords
- blackboard eraser
- right baffle
- plate
- baffle
- eraser body
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model belongs to the technical field of the teaching aid, a dust -proof blackboard eraser is related to, including brush hair, the blackboard eraser body and baffle, the bottom surface of the blackboard eraser body is equipped with evenly distributed's the hole of inhaling, and the cavity that to accept the chamber and be equipped with battery and exhaust fan is cut apart to the internal filter screen that is equipped with of blackboard eraser, filter screen, the exhaust fan is with to be equipped with the air outlet of three bleeder just right about, bleeder is baffle intercommunication about with respectively, and the last lateral wall of the blackboard eraser body is equipped with with lateral wall down and hides the dirt piece, and baffle about the lateral wall is equipped with respectively about the blackboard eraser body, left baffle and right baffle be the cored slab, and left baffle and right baffle open -ended outside length are greater than open -ended inboard length, are equipped with the arch outside the open -ended, through the effect of exhaust fan, form the negative pressure acceping the intracavity, the suction that the negative pressure produced is collected the dust and is acceptd the intracavity, avoids the chalk end to fly upward, simultaneously, the baffle air outlet formed about the gaseous vortex hides the dirt piece about and can effectively prevent chalk end edge leakage.
Description
Technical field
The utility model belongs to teaching aid technical field, specifically, relates to a kind of dustproof blackboard eraser avoiding chalk powder to fly upward by suction.
Background technology
In the classroom instruction work of middle and primary schools, multimedia technology obtains significant progress, teacher can be suitable at classroom teaching use multimedia technology, but writing on the blackboard remains requisite part in primary school and middle school teaching, chalk is as writing implement, it is the requisite instrument of teacher in classroom instruction process, in the process of the letter written with chalk on erasing blackboard, chalk powder inevitably flies upward everywhere, respiratory system can be entered by breathing, accumulate over a long period, the lung of teacher is caused serious injury.A teacher is an architect of man's soul, the health of teacher be its transmit wisdom and impart knowledge and explain the puzzle basic, especially teachers in primary and middle schools, their long-term work is in teaching First Line and as the abecedarian of child, away from dust, it is very necessary for keeping fit.
Chinese patent 201420362260.9 discloses a kind of novel blackboard eraser, it comprises plate body and wiping body, plate body inside is provided with water storage cavity, water storage cavity is provided with the delivery port contacted with wiping body, nozzle is provided with in delivery port, plate body is provided with the button that extruding water storage cavity causes delivery port water outlet, is provided with by the spring compressed between button and plate body; Plate body dual-side is also provided with dust block board, and dust block board dual-side is provided with rotating shaft, and plate body is provided with the axis hole inserted for rotating shaft, and dust block board can be connected on plate body around described axis of rotation; Plate body side is also installed with sucker; Its principle reduces dust by being drenched by wiping body, baffle plate the barrier effect that rises very little.
As described in above-mentioned patent, current most of dustproof blackboard eraser be all by blackboard eraser is drenched realize dust-proof, but easily occur and mud phenomenon after drenching, the chalk powder that after wiping is complete, on blackboard surface, easily existence is thicker, is unfavorable for follow-up writing.
Utility model content
The purpose of this utility model is the shortcoming overcoming prior art existence, seeks design a kind of when erasing blackboard, by suction by dust collection, avoids chalk powder to fly upward, prevent the dustproof blackboard eraser of side leakage simultaneously.
To achieve these goals, the technical solution adopted in the utility model is: a kind of dustproof blackboard eraser, comprises bristle, blackboard eraser body and baffle plate, and the bottom surface of described blackboard eraser body is provided with equally distributed sucker, and bristle is fixed on blackboard eraser body bottom surface by orderliness; Be provided with filter screen in described blackboard eraser body, between filter screen and bottom surface, form host cavity, formed between filter screen and blackboard eraser body end face in cavity and be provided with battery and ventilating fan; Ventilating fan and air outlet are just right, and air outlet place is provided with three branched pipes, parts arm on the left side and is communicated with right baffle-plate, part arm on the right side and are communicated with right baffle plate; The upper side wall of described blackboard eraser body and lower wall are provided with and hide dirt sheet, the left side wall of described blackboard eraser body and right side wall are respectively equipped with right baffle-plate and right baffle plate, right baffle-plate and right baffle plate are cored slab, the length of outer side of right baffle-plate and right baffle openings is greater than the inside length of opening, and the outside of right baffle-plate and right baffle openings is provided with projection.
Preferably, described right baffle-plate and right baffle plate are fixed in blackboard eraser body by rotating shaft, can swing, reduce wear during use.
Preferably, the outside of right baffle-plate and right baffle openings is provided with triangular hill or arc convex, makes air-out form air whirl, effectively stops leaking outside of chalk powder.
The beneficial effects of the utility model are: by the effect of ventilating fan, in host cavity, form negative pressure, and dust collection in host cavity, avoids chalk powder to fly upward by the suction that negative pressure produces; Meanwhile, the air whirl that formed of left baffle air outlet and hide dirt sheet up and down and can effectively prevent chalk powder side leakage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
As shown in Figure 1: bristle 1, hide dirt sheet 2, right baffle plate 3, blackboard eraser body 4, part arm 5, battery 6, ventilating fan 7 on the right side, part arm 8 on the left side, filter screen 9, host cavity 10, right baffle-plate 11, protruding 12.
Detailed description of the invention
By reference to the accompanying drawings the utility model is further described below by specific embodiment:
Embodiment 1
The dustproof blackboard eraser of the present embodiment, comprises bristle 1, blackboard eraser body 4 and baffle plate, and the bottom surface of described blackboard eraser body 4 is provided with equally distributed sucker, and bristle 1 is fixed on the bottom surface of blackboard eraser body 4 by orderliness; Be provided with filter screen 9 in described blackboard eraser body 4, between filter screen 9 and bottom surface, form host cavity 10, formed in cavity between filter screen 9 and blackboard eraser body 4 end face and be provided with battery 6 and ventilating fan 7; Ventilating fan 7 is just right with air outlet, and air outlet place is provided with three branched pipes, parts arm 8 on the left side and is communicated with right baffle-plate 11, parts arm 5 on the right side and is communicated with right baffle plate 3; The upper side wall of described blackboard eraser body 4 and lower wall are provided with and hide dirt sheet 2, the left side wall of described blackboard eraser body 4 and right side wall are respectively equipped with right baffle-plate 11 and right baffle plate 3, right baffle-plate 11 and right baffle plate 3 are cored slab, the length of outer side of right baffle-plate 11 and right baffle plate 3 opening is greater than the inside length of opening, and the outside of right baffle-plate 11 and right baffle plate 3 opening is provided with protruding 12.
Preferably, described right baffle-plate 11 and right baffle plate 3 are fixed in blackboard eraser body 4 by rotating shaft, can swing, reduce wear during use.
Preferably, the outside of right baffle-plate 11 and right baffle plate 3 opening is provided with triangular hill or arc convex, makes air-out form air whirl, effectively stops leaking outside of chalk powder.
Claims (3)
1. a dustproof blackboard eraser, it is characterized in that: comprise bristle (1), blackboard eraser body (4) and baffle plate, the bottom surface of described blackboard eraser body (4) is provided with equally distributed sucker, and bristle (1) is fixed on the bottom surface of blackboard eraser body (4) by orderliness; Filter screen (9) is provided with in described blackboard eraser body (4), form host cavity (10) between filter screen (9) and bottom surface, formed in cavity between filter screen (9) and blackboard eraser body (4) end face and be provided with battery (6) and ventilating fan (7); Ventilating fan (7) is just right with air outlet, and air outlet place is provided with three branched pipes, parts arm (8) on the left side and is communicated with right baffle-plate (11), parts arm (5) on the right side and is communicated with right baffle plate (3); The upper side wall of described blackboard eraser body (4) and lower wall are provided with and hide dirt sheet (2), the left side wall of described blackboard eraser body (4) and right side wall are respectively equipped with right baffle-plate (11) and right baffle plate (3), right baffle-plate (11) and right baffle plate (3) are cored slab, the length of outer side of right baffle-plate (11) and right baffle plate (3) opening is greater than the inside length of opening, and the outside of right baffle-plate (11) and right baffle plate (3) opening is provided with projection (12).
2. dustproof blackboard eraser according to claim 1, is characterized in that: described right baffle-plate (11) and right baffle plate (3) are fixed in blackboard eraser body (4) by rotating shaft.
3. dustproof blackboard eraser according to claim 1 and 2, is characterized in that: the outside of right baffle-plate (11) and right baffle plate (3) opening is provided with triangular hill or arc convex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520743988.0U CN204955867U (en) | 2015-09-23 | 2015-09-23 | Dust -proof blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520743988.0U CN204955867U (en) | 2015-09-23 | 2015-09-23 | Dust -proof blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204955867U true CN204955867U (en) | 2016-01-13 |
Family
ID=55050955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520743988.0U Expired - Fee Related CN204955867U (en) | 2015-09-23 | 2015-09-23 | Dust -proof blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204955867U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973459A (en) * | 2018-07-23 | 2018-12-11 | 唐佳怡 | Multifunctional blackboard for education cleaner |
| CN108973460A (en) * | 2018-07-23 | 2018-12-11 | 唐佳怡 | height-adjustable type dust-proof blackboard eraser |
| CN111873678A (en) * | 2020-08-12 | 2020-11-03 | 无锡职业技术学院 | Folding dustless dry and wet dual-purpose blackboard eraser |
-
2015
- 2015-09-23 CN CN201520743988.0U patent/CN204955867U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108973459A (en) * | 2018-07-23 | 2018-12-11 | 唐佳怡 | Multifunctional blackboard for education cleaner |
| CN108973460A (en) * | 2018-07-23 | 2018-12-11 | 唐佳怡 | height-adjustable type dust-proof blackboard eraser |
| CN111873678A (en) * | 2020-08-12 | 2020-11-03 | 无锡职业技术学院 | Folding dustless dry and wet dual-purpose blackboard eraser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20160923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |