CN201506168U - Dust-free blackboard eraser - Google Patents
Dust-free blackboard eraser Download PDFInfo
- Publication number
- CN201506168U CN201506168U CN2009202389771U CN200920238977U CN201506168U CN 201506168 U CN201506168 U CN 201506168U CN 2009202389771 U CN2009202389771 U CN 2009202389771U CN 200920238977 U CN200920238977 U CN 200920238977U CN 201506168 U CN201506168 U CN 201506168U
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- CN
- China
- Prior art keywords
- dust
- hole
- cavity
- housing
- shell 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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- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
Abstract
The utility model discloses a dust-free blackboard eraser. The dust-free blackboard eraser comprises a shell body and an eraser head installed on the bottom of the shell body. A hollow cavity is arranged on the shell body, water absorption materials are arranged in the hollow cavity, a squeezing device for squeezing the water absorption materials is further installed on the shell body, a through hole is arranged on the bottom of the hollow cavity, the through hole corresponds to the position of the eraser head, and the side wall of the shell body is provided with a water inlet hole. The blackboard eraser can not generate chalk dust in the using process, prevents dirtying of clothes of students and teachers, reduces air pollution, and is beneficial for body health.
Description
Technical field
The utility model relates to a kind of blackboard eraser, relates in particular to a kind of dust-free black board eraser that does not produce chalk dust.
Background technology
At present, when imparting knowledge to students on the classroom, the teacher generally all also is to use chalk to write, a lot of chalk dusts of in using blackboard eraser wiping chalk process, can kicking up, these dust not only can be made student and teacher's clothes dirty, and can cause air pollution, the more important thing is and can damage the healthy of student and teacher.
The utility model content
Technical problem to be solved in the utility model provides a kind of dust-free black board eraser, and this blackboard eraser in use can not produce chalk dust, avoids student and teacher's clothes to make dirty, has reduced air pollution, helps healthy.
For solving the problems of the technologies described above, the technical solution of the utility model is: dust-free black board eraser, comprise housing and the wiping head that is installed on described housing bottom, and described housing is provided with cavity; Be placed with absorbent material in the described cavity; The pressurizing unit that is used to push described absorbent material also is installed on the described housing; The bottom of described cavity is provided with through hole, and described through hole is corresponding with a described wiping position; The sidewall of described housing is provided with the inlet opening.
As a kind of improvement, long handle is installed also on the described housing.
After having adopted technique scheme, effect of the present utility model is: because described housing is provided with cavity; Be placed with absorbent material in the described cavity; The pressurizing unit that is used to push described absorbent material also is installed on the described housing; The bottom of described cavity is provided with through hole, and described through hole is corresponding with a described wiping position; The sidewall of described housing is provided with the inlet opening, therefore just can earlier water be injected in the cavity from the inlet opening, absorbent material becomes very moistening after absorbing water, promoting pressurizing unit then injects it water in absorbent material extruding to wipe head and make wiping moistening from through hole, when using this blackboard eraser, moistening just can not produce chalk dust like this because of wiping, avoided teacher's clothes to make dirty, reduced air pollution, helped healthy.
Owing on the described housing long handle being installed also, the shorter letter written with chalk that can't wipe the upper part of blackboard of some pupil's heights just can be held long handle and carry out wiping, and needn't stand on the stool, has avoided the generation of security incident again.
Description of drawings
Accompanying drawing is the structural representation of the utility model embodiment;
In the accompanying drawing: 1. housing; 2. cavity; 3. push rod; 4. pressing plate; 5. long handle; 6. inlet opening; 7. sealing cap; 8. roll felt; 9. through hole; 10. water-absorbing sponge.
The specific embodiment
A kind of dust-free chalk is wiped, as shown in the figure, it comprises housing 1, described housing 1 is provided with cavity 2, be placed with water-absorbing sponge 10 in the described cavity 2, in the described cavity 2 pressurizing unit that is used to push water-absorbing sponge 10 is installed also, described pressurizing unit comprise pressing plate 4 and with the push rod 3 that is arranged at housing 1 outside, the bottom surface of described cavity 2 is provided with five through holes 9, under each through hole 9, be equipped with and roll felt 8, the sidewall of described housing 1 is provided with inlet opening 6, in the described inlet opening 6 sealing cap 7 is installed, and described housing 1 upper surface also is installed with long handle 5.
Operation principle of the present utility model is: at first sealing cap 7 is taken out, water is injected in the cavity 2 of housing 1, water-absorbing sponge 10 absorbs the water that injects, cover sealing cap 7 again, flicking push rod 3, pressing plate 4 just pushes water-absorbing sponge 10 and water is flow into from through hole 9 rolls felt 8 and make that to roll felt 8 moistening, just can hold long handle 5 in use and carry out wiping, because it is moistening rolling felt 8, therefore the chalk dust of on blackboard, just can not kicking up during the wiping letter written with chalk, avoid academics and students's clothes is made dirty, reduced air pollution, help healthy.
Claims (4)
1. dust-free black board eraser comprises housing and the wiping head that is installed on described housing bottom, and it is characterized in that: described housing is provided with cavity; Be placed with absorbent material in the described cavity; The pressurizing unit that is used to push described absorbent material also is installed on the described housing; The bottom of described cavity is provided with through hole, and described through hole is corresponding with a described wiping position; The sidewall of described housing is provided with the inlet opening.
2. dust-free black board eraser as claimed in claim 1 is characterized in that: described wiping head comprises and rolls felt that the described felt that rolls is identical with the number of described through hole.
3. dust-free black board eraser as claimed in claim 2 is characterized in that: described pressurizing unit comprises the pressing plate that is arranged in the described cavity; And the push rod that is used to promote described pressing plate.
4. dust-free black board eraser as claimed in claim 3 is characterized in that: long handle also is installed on the described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202389771U CN201506168U (en) | 2009-09-27 | 2009-09-27 | Dust-free blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202389771U CN201506168U (en) | 2009-09-27 | 2009-09-27 | Dust-free blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201506168U true CN201506168U (en) | 2010-06-16 |
Family
ID=42467300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202389771U Expired - Fee Related CN201506168U (en) | 2009-09-27 | 2009-09-27 | Dust-free blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201506168U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070901A (en) * | 2013-03-27 | 2014-10-01 | 夏程 | Steam-injection chalk dust brush |
| CN109118840A (en) * | 2018-09-03 | 2019-01-01 | 广州创慧信息科技有限公司 | A kind of multi-functional communications engineering mobile teaching platform |
-
2009
- 2009-09-27 CN CN2009202389771U patent/CN201506168U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070901A (en) * | 2013-03-27 | 2014-10-01 | 夏程 | Steam-injection chalk dust brush |
| CN109118840A (en) * | 2018-09-03 | 2019-01-01 | 广州创慧信息科技有限公司 | A kind of multi-functional communications engineering mobile teaching platform |
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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: 20100616 Termination date: 20100927 |