CN102975536A - Dust-proof blackboard eraser - Google Patents
Dust-proof blackboard eraser Download PDFInfo
- Publication number
- CN102975536A CN102975536A CN 201210417248 CN201210417248A CN102975536A CN 102975536 A CN102975536 A CN 102975536A CN 201210417248 CN201210417248 CN 201210417248 CN 201210417248 A CN201210417248 A CN 201210417248A CN 102975536 A CN102975536 A CN 102975536A
- Authority
- CN
- China
- Prior art keywords
- lid
- dust
- porous disc
- blackboard eraser
- proof 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
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- Drawing Aids And Blackboards (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
Abstract
The invention discloses a dust-proof blackboard eraser comprising a box cover which is provided with an opening at the bottom. The box cover is formed by four border plates and a top plate connected with the tops of the border plates. A permeable plate is arranged on the lower portion of an inner cavity of the box cover in a sliding mode and provided with a plurality of permeable holes. A cavernous body above the permeable plate is arranged in the inner cavity of the box cover. A water filling port is arranged in the top of the box cover and covered with a seal cover. Four corners of the permeable plate are respectively and fixedly provided with four supporting rods. Sliding rollers are respectively and movably connected between the lower ends of the two supporting rods of the front side and between the lower ends of two supporting rods of the back side. Wiping cloth is coated outside the two sliding rollers. The dust-proof blackboard eraser is simple in structure, capable of preventing air pollution caused by dust, and favorable for health of teachers and students.
Description
Technical field
The present invention relates to a kind of school supply and stationery, specifically letter written with chalk prevents that dust from disorderly flying the dust-proof blackboard eraser of phenomenon on a kind of erasing blackboard.
Background technology
At present, blackboard is still the requisite educational aid of classroom instruction.Employed blackboard eraser comprises plank in the school, is fixed with the panniform bristle on the plank.During use, the letter written with chalk on the blackboard is wiped in hand-held blackboard eraser repeatedly wiping on blackboard.Chalk dust under this blackboard eraser flies upward everywhere, has not only increased teacher's the respiratory tract incidence of disease, is also having a strong impact on student's health.
Summary of the invention
The technical problem to be solved in the present invention provides letter written with chalk on a kind of erasing blackboard and prevents that dust from disorderly flying the dust-proof blackboard eraser of phenomenon.
For addressing the above problem, the dust-proof blackboard eraser that provides, comprise the lid that the bottom is uncovered, its design feature is: described lid is comprised of four lateral frame boards and the top board that is connected to the lateral frame board top, lid inner chamber bottom is slidingly fitted with porous disc, porous disc is provided with a plurality of permeable holes, the cavernous body that is positioned at the porous disc top is housed in the lid inner chamber, the top of lid is provided with water filling port, be covered with capping on the water filling port, four bights of porous disc are fixed with respectively four poles, are rotatably connected to respectively slide roller between front side and rear side two pole lower ends, and two slide roller are wrapped up in outward cleaning wiping cloth is housed.
After adopting said structure, owing in the inner chamber of lid cavernous body is housed, the top of lid is provided with water filling port, the lid basal sliding is equipped with porous disc, four bights of porous disc are fixed with respectively four poles, between two pole lower ends of homonymy, slide roller is housed, two slide roller are wrapped up in outward cleaning wiping cloth are housed, porous disc is equipped with at the top of four poles, porous disc is provided with a plurality of permeable holes, in the time of need to erasing the board, inject an amount of water to cavernous body in the Automatic water-filling mouth, porous disc extruding cavernous body can be uniformly with droplet size distribution on cleaning wiping cloth, can erase the board by wet cleaning wiping cloth, the dust that falls can stick on the cleaning wiping cloth, cleaning wiping cloth can rolling under the ordering about of slide roller, uses its wet one side to erase the board, and loses the minor amount of water branch that falls on the blackboard and evaporates rapidly, do not affect the normal use of blackboard, it is clean and tidy to guarantee it to wash cleaning wiping cloth after using.The present invention is simple in structure, and the phenomenon of dust pollution air ambient is no longer occured, and is conducive to the health of Faculty and Students.
Be slidingly mounted on a kind of specific constructive form on the lid as porous disc, the bottom of described lid four limit walls is respectively equipped with spacing frid, and porous disc is installed in the top of spacing frid and can slides up and down along the Si Bianbi of lid.
As improvement of the present invention, be packed in the upper rack posts on the porous disc bottom surface described pole comprising, with the lower fulcrum bar that the outer end of slide roller is connected, link together by spring between upper rack posts and the lower fulcrum bar, be provided with connecting rod between the two adjacent lower connecting rods.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing:
Fig. 1 is structural representation of the present invention;
Fig. 2 be among Fig. 1 A-A to the structural representation of analysing and observe.
The specific embodiment
Dust-proof blackboard eraser as depicted in figs. 1 and 2, it comprises the lid 1 of worn-out mouthful of bottom, lid 1 is comprised of four lateral frame boards and the top board that is connected to the lateral frame board top, lid 1 inner chamber bottom is slidingly fitted with porous disc 4, porous disc 4 is provided with a plurality of permeable holes 8, and the top of lid 1 is that top board is provided with water filling port 6, is covered with capping on the water filling port 6, when not using, water filling port 6 is sealed by capping.Cavernous body 3 is housed in the inner chamber of described lid 1, lid 1 basal sliding is equipped with porous disc 4, four bights of porous disc 4 are fixed with respectively four poles 9, between front side and rear side two poles 1 lower end, be rotatably connected to respectively slide roller 2, it is affixed to wrap up in top and porous disc 4 that cleaning wiping cloth 7, four poles 9 are housed outside two slide roller 2.Lid 1 four limit walls are that the bottom on the inner surface of lateral frame board is respectively equipped with spacing frid 5, and porous disc 4 is installed in the top of spacing frid 5 and can slides up and down along the Si Bianbi of lid 1.Pole 9 comprises the upper rack posts 9-1 that is packed on porous disc 4 bottom surfaces, the lower fulcrum bar 9-2 that is connected with the outer end of slide roller 2, link together by spring 9-3 between upper rack posts 9-1 and the lower fulcrum bar 9-2, for guaranteeing the stability of pole 9, can between two adjacent lower fulcrum bar 9-2 of front and back, be provided with connecting rod.
Claims (3)
1. dust-proof blackboard eraser, the lid (1) that comprises worn-out mouthful of bottom, it is characterized in that: described lid (1) is comprised of four lateral frame boards and the top board that is connected to the lateral frame board top, lid (1) inner chamber bottom is slidingly fitted with porous disc (4), porous disc (4) is provided with a plurality of permeable holes (8), the cavernous body (3) that is positioned at porous disc (4) top is housed in lid (1) inner chamber, the top of lid (1) is provided with water filling port (6), water filling port is covered with capping on (6), four bights of porous disc (4) are fixed with respectively four poles (9), be rotatably connected to respectively slide roller (2) between front side and rear side two poles (1) lower end, outer the wrapping up in of two slide roller (2) is equipped with cleaning wiping cloth (7).
2. dust-proof blackboard eraser according to claim 1, it is characterized in that: the bottom of described lid (1) four limit wall is respectively equipped with spacing frid (5), and porous disc (4) is installed in the top of spacing frid (5) and can slides up and down along the Si Bianbi of lid (1).
3. dust-proof blackboard eraser according to claim 1 and 2, it is characterized in that: described pole (9) comprises the upper rack posts (9-1) that is packed on porous disc (4) bottom surface, the lower fulcrum bar (9-2) that is connected with the outer end of slide roller (2), link together by spring (9-3) between upper rack posts (9-1) and the lower fulcrum bar (9-2), be provided with connecting rod (10) between adjacent two lower connecting rods (9-2) in front and back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210417248 CN102975536A (en) | 2012-10-12 | 2012-10-12 | Dust-proof blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210417248 CN102975536A (en) | 2012-10-12 | 2012-10-12 | Dust-proof blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102975536A true CN102975536A (en) | 2013-03-20 |
Family
ID=47850013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210417248 Pending CN102975536A (en) | 2012-10-12 | 2012-10-12 | Dust-proof blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102975536A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103963518A (en) * | 2014-04-24 | 2014-08-06 | 谢昌睿 | Dust removal blackboard eraser for wet and dry synchronous wiping |
-
2012
- 2012-10-12 CN CN 201210417248 patent/CN102975536A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103963518A (en) * | 2014-04-24 | 2014-08-06 | 谢昌睿 | Dust removal blackboard eraser for wet and dry synchronous wiping |
| CN103963518B (en) * | 2014-04-24 | 2017-03-29 | 谢昌睿 | A kind of wet, dry synchronous dust-removing blackboard eraser cleaned |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 261500 Shandong province Gaomi City Chaoyang Street Primary School No. 3 Fu Qian Jie Yao Ge Zhuang Applicant after: Qu Yun Address before: 261500 No. 3, front street, Central Primary School, Chaoyang Street, Shandong, Gaomi City Applicant before: Qu Yun |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130320 |