CN203331657U - Dust-free type blackboard eraser - Google Patents
Dust-free type blackboard eraser Download PDFInfo
- Publication number
- CN203331657U CN203331657U CN2013201943117U CN201320194311U CN203331657U CN 203331657 U CN203331657 U CN 203331657U CN 2013201943117 U CN2013201943117 U CN 2013201943117U CN 201320194311 U CN201320194311 U CN 201320194311U CN 203331657 U CN203331657 U CN 203331657U
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- CN
- China
- Prior art keywords
- dust
- steel wire
- housing
- shell body
- blackboard eraser
- 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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Abstract
The utility model relates to a dust-free type blackboard eraser. The dust-free type blackboard eraser is characterized in that the dust-free type blackboard eraser is composed of a shell body, rolling barrels, dust collecting boxes, a battery, dust collecting tanks, steel wire nets and hairbrushes; the shell body is of a hollow cuboid structure, and the inner portion of the shell body is concave-convex; the rolling barrels are of cylindrical structures, are located on the concave portions of the shell body and are connected through a shaft; the dust collecting boxes are arranged on the two sides of the shell body; the battery is arranged in a battery groove in the outer side edge of the shell body, and is connected with the steel wire nets; the dust collecting grooves are formed between the shell body and the rolling barrels; the steel wire nets are located on the bottom portion of the groove of the shell body and the inner side of the shell body respectively, and the two steel wire nets form a power grid after being powered on; the hairbrushes are arranged on the steel wire net of the bottom portion of the groove of the shell body. The dust-free type blackboard eraser can collect chalk dust, can prevent the chalk dust from being breathed into the human body and hurting the human body, and is simple in structure, convenient to operate, novel in design and suitable for most teachers.
Description
Technical field
The utility model relates to a kind of blackboard eraser, especially a kind of dust-free blackboard eraser.
Background technology
The chalk teaching aid is the indispensable instrument of imparting knowledge to students at present, carry out impart knowledge with it, it is one of original and the most traditional main teaching method, along with historical progress and social development, the mankind improve constantly the understanding of chalk, when both chalk brings progress and makes huge contribution to mankind's educational undertaking, brought huge harm also to the teacher and the student that are engaged in educational undertaking.Common blackboard eraser commonly used is just put into people's iron sheet box by felt, during class-teaching of teacher, flies upward skyborne chalk dust and is sucked lung by the people, and that gives in the course of time teachers and students healthyly brings very big damage.
Social now, people more and more pay attention to the safety of self, and traditional blackboard eraser also no longer meets people's requirement.
The utility model content
For the above, the purpose of this utility model is to provide a kind of dust-free blackboard eraser, and its adopts and will be provided with cylinder in blackboard eraser, by cylinder, the chalk of blackboard is carried out to wiping, by inner hairbrush, the chalk dust on cylinder is brushed down again, by electrostatic interaction, chalk ash collection is got up.
In order to implement the technical scheme that the purpose of this utility model adopts, be: a kind of dust-free blackboard eraser is characterized in that: it consists of housing, cylinder, dust collecting box, battery, ash collection slot, steel wire, hairbrush; Described housing is the hollow rectangular structure, inner concave-convex surface; Described cylinder is cylindrical structural, is positioned at housing depression position, by axle, connects; Described dust collecting box is positioned at the housing both sides; Described battery is positioned at hull outside limit battery case, is connecting steel wire; Described ash collection slot is between housing and cylinder; Described steel wire lays respectively at housing groove bottom and housing inboard, after two steel wire energisings, forms electrical network; Described hairbrush is positioned on the steel wire of housing groove bottom.
The beneficial effects of the utility model: chalk ash collection can be got up, can prevent that again chalk dust from, by people's suction body, damaging human body, and simple in structure, easy to operate, modern design, be applicable to the most of teachers crowd.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Fig. 1 is the utility model overall structure figure.
Fig. 2 is the utility model cutaway view.
Fig. 3 is the utility model sectional drawing.
In figure, 1-cylinder, 2-housing, 3-dust collecting box, 4-battery, 5-ash collection slot, 6-hairbrush, 7-steel wire.
The specific embodiment
In the first embodiment shown in Fig. 1, body 2, Fig. 3, a kind of dust-free blackboard eraser is characterized in that: it consists of housing, cylinder, dust collecting box, battery, ash collection slot, steel wire, hairbrush; Described housing is the hollow rectangular structure, inner concave-convex surface; Described cylinder is cylindrical structural, is positioned at housing depression position, by axle, connects; Described dust collecting box is positioned at the housing both sides; Described battery is positioned at hull outside limit battery case, is connecting steel wire; Described ash collection slot is between housing and cylinder; Described steel wire lays respectively at housing groove bottom and housing inboard, after two steel wire energisings, forms electrical network; Described hairbrush is positioned on the steel wire of housing groove bottom.
In the second embodiment shown in Fig. 1, Fig. 3, two steel wires are connecting respectively the positive and negative electrode of battery by transformer, its steel wire surface that is positioned at the housing groove bottom is provided with hairbrush, by and cylinder between friction, the chalk dust of cylinder surface is brushed down, and chalk dust moves downward by steel wire; Electricity in battery is transported to steel wire through transformer by electricity and forms electrical network, between two electrical networks, forms electrostatic field, and stronger absorption affinity is arranged, and makes chalk dust to lateral movement in housing, by ash collection slot, to dust collecting box, moves.
In the 3rd embodiment shown in Fig. 2, Fig. 3, cylinder is connected to the housing groove position by axle, and its surface is provided with felt, can carry out wiping to the chalk dust on blackboard.
In the 4th embodiment shown in Fig. 1, Fig. 2, be provided with battery and transformer at the housing side, it is connecting steel wire, and battery is replaceable.
While using the utility model, press power switch, with the felt wiping chalk dust on cylinder, the hairbrush in ash collection slot brushes down the chalk dust of passing by, and because the steel wire of ash collection slot is hollow out, chalk dust can enter in Grid; After grieshoch enters after Grid and is combined with anion and is with upper negative electricity, trend anode surface electric discharge and depositing; After finishing using, deenergization, during chalk dust can be collected dust collecting box under the effect of gravity.
Claims (3)
1. a dust-free blackboard eraser, it is characterized in that: it consists of housing, cylinder, dust collecting box, battery, ash collection slot, steel wire, hairbrush; Described housing is the hollow rectangular structure, inner concave-convex surface; Described cylinder is cylindrical structural, is positioned at housing depression position, by axle, connects; Described dust collecting box is positioned at the housing both sides; Described battery is positioned at hull outside limit battery case, is connecting steel wire; Described ash collection slot is between housing and cylinder; Described steel wire lays respectively at housing groove bottom and housing inboard, after two steel wire energisings, forms electrical network; Described hairbrush is positioned on the steel wire of housing groove bottom.
2. a kind of dust-free blackboard eraser according to claim 1, it is characterized in that: two steel wires are connecting respectively the positive and negative electrode of battery by transformer.
3. a kind of dust-free blackboard eraser according to claim 1, it is characterized in that: cylinder is connected to the housing groove position by axle, and its surface is provided with felt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201943117U CN203331657U (en) | 2013-04-17 | 2013-04-17 | Dust-free type blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201943117U CN203331657U (en) | 2013-04-17 | 2013-04-17 | Dust-free type blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203331657U true CN203331657U (en) | 2013-12-11 |
Family
ID=49700354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201943117U Expired - Fee Related CN203331657U (en) | 2013-04-17 | 2013-04-17 | Dust-free type blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203331657U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415942A (en) * | 2014-10-30 | 2016-03-23 | 罗国友 | Dustproof blackboard eraser improving erasing efficiency |
-
2013
- 2013-04-17 CN CN2013201943117U patent/CN203331657U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415942A (en) * | 2014-10-30 | 2016-03-23 | 罗国友 | Dustproof blackboard eraser improving erasing efficiency |
| CN105415943A (en) * | 2014-10-30 | 2016-03-23 | 罗国友 | Dustproof blackboard eraser |
| CN105415947A (en) * | 2014-10-30 | 2016-03-23 | 罗国友 | Blackboard eraser with dust collector |
| CN105415948A (en) * | 2014-10-30 | 2016-03-23 | 罗国友 | Efficient blackboard eraser |
| CN105415943B (en) * | 2014-10-30 | 2017-01-18 | 张嘉慧 | Dustproof blackboard eraser |
| CN105415948B (en) * | 2014-10-30 | 2017-01-18 | 亳州学院 | Efficient blackboard eraser |
| CN105415942B (en) * | 2014-10-30 | 2017-03-22 | 曹天行 | Dustproof blackboard eraser improving erasing efficiency |
| CN105415948B8 (en) * | 2014-10-30 | 2017-04-12 | 亳州学院 | Efficient blackboard eraser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20140417 |