CN102431364A - Dustless blackboard eraser - Google Patents
Dustless blackboard eraser Download PDFInfo
- Publication number
- CN102431364A CN102431364A CN2011103992503A CN201110399250A CN102431364A CN 102431364 A CN102431364 A CN 102431364A CN 2011103992503 A CN2011103992503 A CN 2011103992503A CN 201110399250 A CN201110399250 A CN 201110399250A CN 102431364 A CN102431364 A CN 102431364A
- Authority
- CN
- China
- Prior art keywords
- blackboard eraser
- dust
- roller
- eraser body
- blackboard
- 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
Links
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a dustless blackboard eraser which comprises a blackboard eraser body (1) and is characterized in that a dust collection cavity (2) is arranged inside the blackboard eraser body (1), a metal static filter screen (3) is arranged above the dust collection cavity (2), a flip-open cover (4) at the rear end of the blackboard eraser body (1) is communicated with the dust collection cavity (2), a ground-glass plate (5) is fixedly arranged on the metal static filter screen (3), a roller (6) supported in a rotating manner is arranged inside the blackboard eraser body (1), a silk layer is arranged on the outer surface of the roller (6), when the roller (6) rolls, the roller (6) and the ground-glass plate (5) are in mutual friction, and an erasing strip (7) is arranged inside the blackboard eraser body (1). The dustless blackboard eraser has a simple structure, is unique in design, can prevent chalk ash from flying by using the principle of electrostatic adsorption, and can uniformly collect the chalk ash.
Description
Technical field
The present invention relates to a kind of blackboard eraser, especially a kind ofly can prevent that chalk dust from flying upward, and can be with the dust-free black board eraser of chalk dust centralized collection.
Background technology
Blackboard and chalk are the most common, the most widely used educational aids; Because of it can use the welcome that receives vast teaching person and student repeatedly; But it also exists some problems when bringing convenience to people; Wherein maximum problem is exactly in the wiping letter written with chalk, and chalk dust can fly upward everywhere, has had a strong impact on the healthy of teacher and the classmate nearer apart from blackboard.PUD D has become one of this professional height morbidity of teacher; In order to guarantee the healthy of teacher, the blackboard eraser that has some can collect chalk dust on the market now, but the ubiquitous problem of these blackboard erasers is a complex structure; Cost is higher, is not suitable for applying.Therefore need a kind of novel blackboard eraser that can address this problem now.
Summary of the invention
The present invention is in order to solve the above-mentioned deficiency of existing in prior technology, proposes a kind of simple in structurely, designs ingeniously, utilizes electrostatic absorption principle restriction chalk dust to fly upward everywhere, and with the unified dust-free black board eraser of collecting of chalk dust.
Technical solution of the present invention is: a kind of dust-free black board eraser; Comprise blackboard eraser body 1, it is characterized in that: be provided with dust-collecting cavity 2 in the described blackboard eraser body 1, dust-collecting cavity 2 tops are provided with metal electro static filtering net 3; Being arranged on renovating of blackboard eraser body 1 rear end 4 communicates with dust-collecting cavity 2; On metal electro static filtering net 3, be set with focussing glass 5, also rotational support has roller 6 in blackboard eraser body 1, and the outer surface of roller 6 is provided with the silk layer; And when roller 6 rolls can with focussing glass 5 mutual friction mutually, in blackboard eraser body 1, also be provided with and wipe bar 7.
The described roller that matches 6 is many groups with focussing glass 5, and on the length direction of blackboard eraser body 1, evenly distributes.
Described wiping bar 7 is a plurality of, and is arranged between two groups of rollers 6 and the focussing glass 5.
The present invention compares with prior art, has following advantage:
The dust-free black board eraser of the embodiment of the invention, simple in structure, reasonable in design; Be skillfully constructed, it creatively utilizes the principle of Electrostatic Absorption molecule, designs the structure that can in the wiping letter written with chalk, produce static; The static that utilization produces adsorbs chalk dust and collects; Chalk dust is concentrated on Unified Treatment in the dust-collecting cavity, and the situation that chalk dust flies upward everywhere when so just having avoided erasing the board takes place, and has protected the healthy of Faculty and Students; Simultaneously also guarantee the environmental sanitation in the classroom, for cleaning person reduces the amount of labour.And its making is simple, and is with low cost, is suitable for applying in the art, possessed extensive market prospects.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
The specific embodiment
Below with the accompanying drawings specific embodiment of the present invention.As shown in Figure 1: a kind of dust-free black board eraser; Comprise blackboard eraser body 1 as the basis; In blackboard eraser body 1, be provided with dust-collecting cavity 2; The top of dust-collecting cavity 2 (towards the direction of the operative end surface of blackboard eraser body 1) is provided with metal electro static filtering net 3, is provided with and renovates 4 in the rear end of blackboard eraser body 1 (being the non-operative end of blackboard eraser body 1), and renovate 4 and communicate with dust-collecting cavity 2; On metal electro static filtering net 3, be set with focussing glass 5; Rotational support has roller 6 in blackboard eraser body 1, is provided with the silk layer at the outer surface of roller 6, and this roller 6 can be in contact with one another with focussing glass 5 and rub when rotating; The rotation of roller 6 is when relying on blackboard eraser body 1 blackboard wiping; The reaction force that roller 6 contacts with blackboard and relative motion produced also is provided with in blackboard eraser body 1 and wipes bar 7, is used to wipe the track of chalk on the blackboard; And the above-mentioned roller that matches 6 is many groups with focussing glass 5, and it also be a plurality of wiping bar 7, their mutual distribution straggly (as shown in Figure 1), and evenly distribution on the length direction of blackboard eraser body 1.
The course of work of the dust-free black board eraser of the embodiment of the invention is following: when the blackboard eraser that utilizes present embodiment during to the chalk track wiping on the blackboard; Wiping bar 7 wipes the track of chalk; Chalk dust flies upward near blackboard eraser body 1 working end, and blackboard eraser body 1 is in the process of wiping, and roller 6 can rotate under function of friction; Being arranged on roller 6 outer field silk layers just can rub on focussing glass 5; Produce negative electrical charge on the roller 6, produce positive charge on the focussing glass 5, and also have positive charge with focussing glass 5 contacted metal electro static filtering nets 3; Chalk dust by its attraction, and falls among the dust-collecting cavity 2 under the effect of static on the metal electro static filtering net 3, and in the process that erases the board, the chalk dust of generation can not fly upward everywhere like this, but enters into to greatest extent among the dust-collecting cavity 2; After dust-collecting cavity 2 is filled, will renovate 4 from the rear end and open, chalk dust is poured out to focus on get final product.
Claims (3)
1. dust-free black board eraser; Comprise blackboard eraser body (1), it is characterized in that: be provided with dust-collecting cavity (2) in the described blackboard eraser body (1), dust-collecting cavity (2) top is provided with metal electro static filtering net (3); Renovate (4) that are arranged on blackboard eraser body (1) rear end communicate with dust-collecting cavity (2); On metal electro static filtering net (3), be set with focussing glass (5), also rotational support has roller (6) in blackboard eraser body (1), and the outer surface of roller (6) is provided with the silk layer; And when roller (6) rolls can with focussing glass (5) mutual friction mutually, in blackboard eraser body (1), also be provided with and wipe bar (7).
2. dust-free black board eraser according to claim 1 is characterized in that: described roller that matches (6) and focussing glass (5) are many groups, and on the length direction of blackboard eraser body (1), evenly distribute.
3. dust-free black board eraser according to claim 2 is characterized in that: described wiping bar (7) is a plurality of, and is arranged between two groups of rollers (6) and the focussing glass (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103992503A CN102431364A (en) | 2011-12-06 | 2011-12-06 | Dustless blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103992503A CN102431364A (en) | 2011-12-06 | 2011-12-06 | Dustless blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102431364A true CN102431364A (en) | 2012-05-02 |
Family
ID=45979831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103992503A Pending CN102431364A (en) | 2011-12-06 | 2011-12-06 | Dustless blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102431364A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103287176A (en) * | 2013-05-23 | 2013-09-11 | 贵州大学 | Electrostatic dust-absorption blackboard eraser and electrostatic dust-absorption blackboard eraser manufacturing method |
| CN107280579A (en) * | 2016-12-30 | 2017-10-24 | 胡振华 | Family expenses depth dust catcher |
| CN108854246A (en) * | 2018-07-04 | 2018-11-23 | 芜湖新世纪净化器材有限责任公司 | A kind of anticreep hair Wire-wound filter core |
| CN109532292A (en) * | 2018-12-10 | 2019-03-29 | 梅三女 | A kind of environment-friendly dustless blackboard eraser |
| CN109760453A (en) * | 2019-03-12 | 2019-05-17 | 余守华 | A kind of blackboard eraser for reducing chalk dust and flying upward |
| CN110303805A (en) * | 2019-07-16 | 2019-10-08 | 吴鹏 | A kind of blackboard eraser of automatic dust absorption |
| CN112606596A (en) * | 2020-12-24 | 2021-04-06 | 青岛黄海学院 | Special multi-functional plotter of mathematics such as university height |
-
2011
- 2011-12-06 CN CN2011103992503A patent/CN102431364A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103287176A (en) * | 2013-05-23 | 2013-09-11 | 贵州大学 | Electrostatic dust-absorption blackboard eraser and electrostatic dust-absorption blackboard eraser manufacturing method |
| CN103287176B (en) * | 2013-05-23 | 2015-08-26 | 贵州大学 | A kind of preparation method of dust-sucking blackboard eraser and device thereof |
| CN107280579A (en) * | 2016-12-30 | 2017-10-24 | 胡振华 | Family expenses depth dust catcher |
| CN108854246A (en) * | 2018-07-04 | 2018-11-23 | 芜湖新世纪净化器材有限责任公司 | A kind of anticreep hair Wire-wound filter core |
| CN109532292A (en) * | 2018-12-10 | 2019-03-29 | 梅三女 | A kind of environment-friendly dustless blackboard eraser |
| CN109760453A (en) * | 2019-03-12 | 2019-05-17 | 余守华 | A kind of blackboard eraser for reducing chalk dust and flying upward |
| CN109760453B (en) * | 2019-03-12 | 2020-11-24 | 苏州市信睦知识产权服务有限公司 | Blackboard eraser capable of reducing chalk dust flying |
| CN110303805A (en) * | 2019-07-16 | 2019-10-08 | 吴鹏 | A kind of blackboard eraser of automatic dust absorption |
| CN112606596A (en) * | 2020-12-24 | 2021-04-06 | 青岛黄海学院 | Special multi-functional plotter of mathematics such as university height |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102431364A (en) | Dustless blackboard eraser | |
| CN210526119U (en) | Teaching aid for information and computer science | |
| CN205112786U (en) | Multifunctional blackboard eraser | |
| CN203888482U (en) | Combined structure of blackboard and blackboard eraser | |
| CN202782389U (en) | Drum type blackboard eraser | |
| CN207657477U (en) | A kind of primary school math teaching blackboard | |
| CN201913981U (en) | Dust-removing device for blackboard eraser | |
| CN201618697U (en) | Blackboard eraser dust separator | |
| CN105270061B (en) | A kind of dust suction and the good blackboard eraser of laying dust effect | |
| CN204398653U (en) | A kind of chalk dust collecting device of blackboard | |
| CN208498079U (en) | Environmentally friendly blackboard eraser | |
| CN201626217U (en) | Multi-purpose electrostatic dedusting eraser | |
| CN202213397U (en) | Eraser | |
| CN2080471U (en) | Rolling automatic dust-removing blackboard eraser | |
| CN105270060B (en) | A kind of multifunctional blackboard eraser | |
| CN203902081U (en) | Mechanical dust-collecting eraser | |
| CN203126302U (en) | Dust-removing eraser | |
| CN203818842U (en) | Writing device capable of being adjusted in circulating mode | |
| CN206588109U (en) | A kind of chalk dust removing means for eraser | |
| CN203460593U (en) | Integrated arc track type blackboard cleaning system | |
| CN212267076U (en) | Wisdom campus teaching blackboard | |
| CN203110657U (en) | Dust guarding blackboard | |
| CN203142196U (en) | Automatic dust-fall-free environment-friendly type chalk eraser | |
| CN201745341U (en) | Dust-collecting blackboard eraser | |
| CN201849201U (en) | Blackboard eraser capable of absorbing dust |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120502 |