CN201745342U - Dust removal eraser - Google Patents
Dust removal eraser Download PDFInfo
- Publication number
- CN201745342U CN201745342U CN2010201510418U CN201020151041U CN201745342U CN 201745342 U CN201745342 U CN 201745342U CN 2010201510418 U CN2010201510418 U CN 2010201510418U CN 201020151041 U CN201020151041 U CN 201020151041U CN 201745342 U CN201745342 U CN 201745342U
- Authority
- CN
- China
- Prior art keywords
- centimetre
- blackboard eraser
- eraser
- dust
- dust removal
- 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 title claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 235000002991 Coptis groenlandica Nutrition 0.000 claims description 3
- 244000247747 Coptis groenlandica Species 0.000 claims description 3
- 210000000282 Nails Anatomy 0.000 claims description 3
- 241000405070 Percophidae Species 0.000 claims description 3
- 239000005002 finish coating Substances 0.000 claims description 2
- 231100000957 no side effect Toxicity 0.000 claims description 2
- 238000007142 ring opening reaction Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000036541 health Effects 0.000 abstract description 2
- 230000003044 adaptive Effects 0.000 abstract 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
Abstract
The utility model relates to a teaching tool, in particular to a dust removal eraser. The dust removal eraser comprises a dust removal hood, a built-in eraser and a handle. The built-in eraser is round and hooded with the dust removal hood; the handle presses the dust removal hood and is nailed in the middle on the built-in eraser; and an erasing surface is slightly lower than a sealing ring of the dust removal hood. The edge of the dust removal hood is provided with the inwards-turned duckbilled sealing ring which becomes thin gradually from the root to the duckbilled edge to form a blade shape, thus being beneficial to sealing and dust removal and also being capable of prolonging the service life. The round eraser can reduce occupied space, improve the effective use area, save labor force in erasing and prevent retroflection. The handle is adaptive to the hand shapes of teachers and students and provided with an anti-skidding groove, thus being beneficial to use. The eraser is mainly used for erasing blackboards, can prevent and remove dust, and reduce environment pollution, thus being beneficial to the physical and psychological health of the teachers and students.
Description
Technical field
The utility model relates to a kind of educational aid, relates in particular to a kind of Dust-removing blackboard eraser.
Background technology
The blackboard eraser majority of people's use at present is dustproof, and dust disorderly flies when erasing the board, and pollutes classroom environment, influences teachers and students' health.Some dustproof blackboard eraser can only prevent simply that dust from disorderly flying, but effectively dedusting, and dust is stayed on the blackboard eraser or on the blackboard, in the same old way contaminated environment.
Summary of the invention
For overcoming the deficiency of existing blackboard eraser, the utility model provides a kind of Dust-removing blackboard eraser, and the not only dustproof but also dedusting of this blackboard eraser can also be collected dust.
The technical scheme that its technical problem that solves the utility model adopts is: blackboard eraser is made up of dust excluding hood, built-in blackboard eraser, handle, built-in blackboard eraser is made circle, cover with dust excluding hood, wiping face is a little less than the dust excluding hood sealing ring, and handle is pushed down the dust excluding hood nail in the middle of above the built-in blackboard eraser.Dust excluding hood top is the round can shape and directly entangles blackboard eraser circle hair supporting plate, the bottom is the horn-like dustproof dedusting area that is, turn in the cover base and make duckbill annulus sealing ring, approach into blade-like from the mouth root gradually to the duckbilled limit, can improve sealing like this, effectively dedusting again can be collected dust, can increase the service life again.Circular blackboard eraser can reduce and takes up room, and improves effective usable floor area, and wiping prevents to retroflect with laborsaving.Mix the handle that is fit to teachers and students' hand-type, be beneficial to use.
The beneficial effects of the utility model are: use this blackboard eraser to solve the problem that dust disorderly flies when erasing the board, the dedusting of effectively preventing dust also can be collected dust, reduces environmental pollution, is beneficial to teachers and students' physical and mental health.
Description of drawings
Fig. 1 is the stereogram of dust excluding hood.
Fig. 2 is the center line profile of dust excluding hood.
Fig. 3 is the stereogram of the built-in blackboard eraser of mane.
Fig. 4 is the stereogram of the built-in blackboard eraser of felt.
Fig. 5 is the stereogram of handle.
Fig. 6 is the stereogram of Dust-removing blackboard eraser.
The specific embodiment
The making of dust excluding hood: dust excluding hood top is the round can shape, the bottom is horn-like, see Fig. 1, specifically be of a size of 10-12 centimetre of top disc diameter, high 1-1.2 centimetre, loudspeaker limit, bottom is turned up 30 °-45 °, turn over 90 ° of-105 ° of angles in loudspeaker length of side 1-1.5 centimeters in again and make duckbill annulus sealing ring, the long 1-1.2 of mouth centimetre, approach into blade-like gradually to the mouth from the mouth root, from the sealing ring edge to the high 1-1.5 in bottom surface, top centimetre, whole dust excluding hood wall thickness 1-3 millimeter, 9-11 centimetre of sealing ring opening disc diameter.Make behind the mould with the rubber injection-compression molding that has no side effect according to above-mentioned size and requirement, it is white, grey, green, blue or green, black that color has etc.
The making of built-in blackboard eraser: built-in blackboard eraser is divided into mane blackboard eraser such as Fig. 3 or felt blackboard eraser such as Fig. 4.Select for use suitable plank to make circle hair supporting plate, the hair supporting plate diameter of two kinds of blackboard erasers all is 10-12 centimetre, and thick 1-1.2 centimetre, the hair side diameter all is 8-10 centimetre.The mane blackboard eraser exposes staple length 1-1.3 centimetre, but that the mane open-work is reined in line is solid, also can plant hair.The felt blackboard eraser is rectangular from the counterclockwise spiral cementation in hair supporting plate center with wide 1-1.3 centimetre felt.
The making of handle: select suitable plank for use, make according to Fig. 5, be of a size of long 7-9 centimetre, wide 4-6 centimetre, thick 1-2 centimetre, fluted roller is anti-skidding on the two long side faces, above four edges circle rib, finish coatings, that color has is white, grey, green, blue or green, black, Huang etc.
Finished product is made: dust excluding hood (1) is enclosed within on built-in blackboard eraser (3) or the built-in blackboard eraser (4), allows wiping face a little less than dust excluding hood sealing ring edge, again handle coated with paint (5) is pushed down dust excluding hood nail central getting final product above built-in blackboard eraser.
Claims (4)
1. Dust-removing blackboard eraser is made up of dust excluding hood (1), built-in blackboard eraser (3) or (4), handle (5), and it is characterized in that: built-in blackboard eraser covers with dust excluding hood for circular, and wiping face is a little less than the dust excluding hood sealing ring, and handle is pushed down the dust excluding hood nail in the middle of above the built-in blackboard eraser.
2. according to the described Dust-removing blackboard eraser of claim 1, it is characterized in that: dust excluding hood is for circular, make with the rubber that has no side effect, top is the round can shape, the bottom is horn-like, 10-12 centimetre of top disc diameter, high 1-1.2 centimetre, loudspeaker limit, the bottom 30 °-45 that turns up turns over 90 ° of-105 ° of angles in loudspeaker length of side 1-1.5 centimeters in again and becomes duckbill annulus sealing rings, the long 1-1.2 of mouth centimetre, approach into blade-like gradually to the mouth from the mouth root, from the sealing ring edge to the high 1-1.5 in bottom surface, top centimetre, whole dust excluding hood wall thickness 1-3 millimeter, 9-11 centimetre of sealing ring opening disc diameter.
3. according to the described Dust-removing blackboard eraser of claim 1, it is characterized in that: built-in blackboard eraser divides mane blackboard eraser or felt blackboard eraser, the circle hair supporting plate of two kinds of blackboard erasers is wooden, diameter all is 10-12 centimetre, and thick 1-1.2 centimetre, the hair side diameter all is 8-10 centimetre, the mane blackboard eraser exposes staple length 1-1.3 centimetre, it is solid that but the mane open-work is reined in line, also can plant hair, and the felt blackboard eraser is rectangular from the counterclockwise spiral cementation in hair supporting plate center with wide 1-1.3 centimetre felt.
4. according to the described Dust-removing blackboard eraser of claim 1, it is characterized in that: handle is wooden, long 7-9 centimetre, wide 4-6 centimetre, thick 1-2 centimetre, fluted on the two long side faces, above four edges circle rib, finish coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201510418U CN201745342U (en) | 2010-04-01 | 2010-04-01 | Dust removal eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201510418U CN201745342U (en) | 2010-04-01 | 2010-04-01 | Dust removal eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201745342U true CN201745342U (en) | 2011-02-16 |
Family
ID=43580014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201510418U Expired - Fee Related CN201745342U (en) | 2010-04-01 | 2010-04-01 | Dust removal eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201745342U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105774336A (en) * | 2014-12-18 | 2016-07-20 | 上海市格致中学 | Novel eraser |
| CN105856928A (en) * | 2016-06-03 | 2016-08-17 | 河北工业大学 | Zero-energy-consumption wet type dust collection board eraser |
| CN106466976A (en) * | 2015-08-21 | 2017-03-01 | 上海市格致中学 | Blackboard eraser |
-
2010
- 2010-04-01 CN CN2010201510418U patent/CN201745342U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105774336A (en) * | 2014-12-18 | 2016-07-20 | 上海市格致中学 | Novel eraser |
| CN106466976A (en) * | 2015-08-21 | 2017-03-01 | 上海市格致中学 | Blackboard eraser |
| CN105856928A (en) * | 2016-06-03 | 2016-08-17 | 河北工业大学 | Zero-energy-consumption wet type dust collection board eraser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| C14 | Grant of patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20130401 |
|
| C17 | Cessation of patent right |