CN2159315Y - Dustless blackboard eraser - Google Patents
Dustless blackboard eraser Download PDFInfo
- Publication number
- CN2159315Y CN2159315Y CN 93210930 CN93210930U CN2159315Y CN 2159315 Y CN2159315 Y CN 2159315Y CN 93210930 CN93210930 CN 93210930 CN 93210930 U CN93210930 U CN 93210930U CN 2159315 Y CN2159315 Y CN 2159315Y
- Authority
- CN
- China
- Prior art keywords
- baffle plate
- dust
- blackboard eraser
- rub body
- soft
- 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
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a dustless blackboard eraser, which comprises an erasing body. The erasing body is fixed to a base, and the upper, the left and the right sides of the base are provided with baffles, and the lower part is provided with a dust box. Both sides of the erasing are respectively provided with a soft baffle, and the soft baffle is little higher than the surface of the erasing body. The erasing body and the blade of the blade-shaped baffle are in the same plane and are little higher than the baffles of other three sides. The dust erased off by the erasing body is blocked off by the bilateral soft baffles and falls downwards to the dust box. The dust removal efficiency can achieve 85-90%. The blackboard eraser has low cost and convenient use and storage and is easy to be accepted by the extensive schools.
Description
The utility model belongs to blackboard eraser.
The felt formula blackboard eraser that generally uses dust from flying when wiping letter written with chalk promptly pollutes classroom environment at present, influences teachers and students' health again.Though the blackboard eraser of existing electric dust absorption blackboard eraser or other structure occurs, because its price is more expensive relatively, use, keeping are inconvenient again, so be difficult to popularize in general school.
The purpose of this utility model is to provide a kind of good dedusting effect, cost blackboard eraser low, easy to use.
The purpose of this utility model realizes by structure shown in the accompanying drawing, it comprises a rub body 1, rub body is fixed on the base, there is baffle plate 3 on last, left and right three limits of base, and bottom is a dust box 5, and a soft baffle plate 2 is respectively arranged in the both sides of rub body, have on the following dust box of rub body a baffle blade 4 is arranged, soft baffle plate is a little more than the rub body surface, and the sword of rub body and tooth shape baffle plate is on same plane, and a little more than the baffle plate on other three limits.In the bottom of dust box a mouth of falling dirt 7 is arranged, the mouth of falling dirt has the plate that can twitch 6, at ordinary times the mouth of falling dirt is sealed, and draws back plate, dust can be poured out.
When the utility model uses wipe about laterally on the blackboard moving, rub body, soft baffle plate and tooth shape baffle plate contact with blackboard surface, the dust that is caused by rub body firmly can not laterally be flown out by the soft shape baffle plate of both sides, can only land downwards and be blocked by the tooth shape baffle plate, drops in the dust box.The low amounts of dust that causes by soft baffle plate since the transverse movement of dust apart from weak point, so have only a small amount of gap to fly out from three side guards and blackboard surface.The tooth shape baffle plate is that line contacts with blackboard surface, and the Dust Capacity of generation is few.Therefore, the utility model can drop on the most of dust Control under wiping in the dust box, and efficiency of dust collection can reach 85-90%, and effect is fine.In addition, of the present utility model simple in structure, it is lower to manufacture cost with timber or plastics, and uses keeping convenient, is easy to vast school and accepts.
Accompanying drawing is the utility model structural representation.
Embodiment:
Baffle plate, base, dust box are made of plastics, the rub body surface is the felt of 4 millimeters thick, long 195 millimeters of blackboard eraser, wide 190 millimeters, soft baffle plate is thick 1 millimeter rubber, soft baffle plate is higher than 1.5 millimeters on rub body surface, and the tooth shape baffle plate is higher than 0.5 millimeter of other three side guard, and a handle is arranged at the back side of blackboard.
Claims (2)
1, removes the dust blackboard eraser, comprise a rub body, it is characterized in that rub body is fixed on the base, left and right and the top of base is a baffle plate, and the bottom is a dust box, in the both sides of rub body a soft baffle plate is arranged respectively, a tooth shape baffle plate is arranged on the dust box of the bottom of rub body, soft baffle plate is a little more than the rub body surface, and the sword of rub body and tooth shape baffle plate is on same plane, and a little more than the baffle plate on other three limits.
2, according to the said dust-removing blackboard eraser of claim 1, it is characterized in that a mouth of falling dirt is arranged at the bottom of blackboard eraser dust box, the mouth of falling dirt has the plate that can twitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93210930 CN2159315Y (en) | 1993-04-24 | 1993-04-24 | Dustless blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93210930 CN2159315Y (en) | 1993-04-24 | 1993-04-24 | Dustless blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2159315Y true CN2159315Y (en) | 1994-03-23 |
Family
ID=33792694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93210930 Expired - Fee Related CN2159315Y (en) | 1993-04-24 | 1993-04-24 | Dustless blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2159315Y (en) |
-
1993
- 1993-04-24 CN CN 93210930 patent/CN2159315Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |