CN2219799Y - Dust-collecting blackboard eraser - Google Patents
Dust-collecting blackboard eraser Download PDFInfo
- Publication number
- CN2219799Y CN2219799Y CN 95230044 CN95230044U CN2219799Y CN 2219799 Y CN2219799 Y CN 2219799Y CN 95230044 CN95230044 CN 95230044 CN 95230044 U CN95230044 U CN 95230044U CN 2219799 Y CN2219799 Y CN 2219799Y
- Authority
- CN
- China
- Prior art keywords
- dust
- blackboard eraser
- eraser
- rolling brush
- utility
- 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 the improvement of the blackboard eraser. Both sides of a dust eraser are respectively provided with a rolling brush, and both ends of the rolling brush are respectively provided with a roller which is inlaid on a wheel carrier with a pressure spring. The space formed by the back cover buckled on the erasing body and the back side of the dust eraser is a dust storing chamber. The dust-collecting blackboard eraser is similar with the common blackboard eraser for the chalk handwriting also generates the static electricity after erased, and the rolling brush also generates the static electricity for rolling, in order to adsorb the dust and be carried into the dust storing chamber to be collected. The utility model has the advantages of the dust suction effect achieving about 80% indicated by the experiments, low cost, beautiful appearance and long service life.
Description
The utility model relates to the improvement to a kind of blackboard eraser
Existing general blackboard eraser is that felt is fixed on the plank, during use, chalk dust can only be wiped, and can not work to collect dust, causes environmental pollution, the teacher's clothing of making dirty, and it is healthy to influence teachers and students.Seen the report that electric dust absorption blackboard eraser is arranged, but since complex structure, the cost height, and do not obtain promoting.
The purpose of this utility model is to provide a kind of dust absorption blackboard eraser.This blackboard eraser can be wiped chalk dust, chalk dust can be collected again, can reduce the environment dust concentration greatly.
The utility model is to realize so in conjunction with the accompanying drawings.Wiping 7 both sides at the ash of blackboard eraser rub body 2 respectively has a round brush 5, and the round brush two ends respectively have a roller 4 to be embedded in just on the wheel carrier 3 that has stage clip 6, and the capable space that becomes of bonnet 1 and the grey rubdown face on the rub body of being fastened on is a dust-storage chamber 8.
The dust absorption blackboard eraser that use is made according to said structure, letter written with chalk by with the same back generation static of wiping of common blackboard eraser, round brush also produces static because of rolling, and dust is adsorbed and is brought in the dust-collecting box collect it, the results showed that pick-up performance is about 80%.Brush body adopts plastics to make, and cost is low, and good looking appearance is sturdy and durable.
Description of drawings:
Fig. 1 dust absorption blackboard eraser structural representation
Fig. 2 Figure 1B-B view
Fig. 3 Figure 1A-A view
Embodiment: according to structure shown in the accompanying drawing, the design of dust absorption blackboard eraser important technological parameters is as follows:
Length * wide * height is 160 * 80 * 38mm,
Ash is wiped and is made length * wide 120 * 40mm with felt,
The long 120mm of round brush, diameter 14mm,
With the steel wire of diameter 0.5mm around or the spring of diameter 9mm make stage clip,
Brush body, roller are made with engineering plastics, roller diameter 12mm
The dust absorption blackboard eraser that use is made according to said structure, letter written with chalk by with the same back generation static of wiping of common blackboard eraser, round brush also produces static because of rolling, and dust is adsorbed and is brought in the dust-collecting box collect it, the results showed that pick-up performance is about 80%.
Claims (1)
- A kind of by rub body 2 and ash wiping 7 dust absorption blackboard erasers of forming, it is characterized in that wiping both sides at ash respectively has a round brush 5, the round brush two ends respectively have a roller 4 to be embedded in just on the wheel carrier 3 that has stage clip 6, and the capable space that becomes of bonnet 1 and the grey rubdown face on the rub body of being fastened on is a dust-storage chamber 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95230044 CN2219799Y (en) | 1995-01-12 | 1995-01-12 | Dust-collecting blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95230044 CN2219799Y (en) | 1995-01-12 | 1995-01-12 | Dust-collecting blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2219799Y true CN2219799Y (en) | 1996-02-14 |
Family
ID=33874983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95230044 Expired - Fee Related CN2219799Y (en) | 1995-01-12 | 1995-01-12 | Dust-collecting blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2219799Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427322A (en) * | 2016-09-12 | 2017-02-22 | 芜湖能盟信息技术有限公司 | Dust-collecting blackboard eraser |
| CN109760453A (en) * | 2019-03-12 | 2019-05-17 | 余守华 | A kind of blackboard eraser for reducing chalk dust and flying upward |
-
1995
- 1995-01-12 CN CN 95230044 patent/CN2219799Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427322A (en) * | 2016-09-12 | 2017-02-22 | 芜湖能盟信息技术有限公司 | Dust-collecting blackboard eraser |
| CN109760453A (en) * | 2019-03-12 | 2019-05-17 | 余守华 | A kind of blackboard eraser for reducing chalk dust and flying upward |
| CN109760453B (en) * | 2019-03-12 | 2020-11-24 | 苏州市信睦知识产权服务有限公司 | Blackboard eraser capable of reducing chalk dust flying |
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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 |