CN202716640U - Blackboard eraser - Google Patents
Blackboard eraser Download PDFInfo
- Publication number
- CN202716640U CN202716640U CN 201220410353 CN201220410353U CN202716640U CN 202716640 U CN202716640 U CN 202716640U CN 201220410353 CN201220410353 CN 201220410353 CN 201220410353 U CN201220410353 U CN 201220410353U CN 202716640 U CN202716640 U CN 202716640U
- Authority
- CN
- China
- Prior art keywords
- pressure sensor
- fan
- dust
- battery
- chalk
- 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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- Position Input By Displaying (AREA)
Abstract
A blackboard eraser capable of cleaning dust comprises a pressure sensor, a battery, press piece contacts, a fan and a containing box, and is characterized in that the pressure sensor is fixed in a chalk eraser. When contacts of two metal press pieces contact, the pressure sensor, the battery, the contacts of the metal press pieces and the small-size fan combine to form a closed circuit together, and then the fan works. The blackboard eraser capable of cleaning the dust has the advantages of absorbing chalk dust, solving the problem that the chalk dust flies everywhere in the process of erasing a blackboard and avoiding the phenomenon that the chalk dust is absorbed by teachers and students and does harm on health of the teachers and the students.
Description
Technical field
The utility model belongs to a kind of realia, specifically a kind of eraser that can clean blackboard.
Background technology
In the teachers ' teaching process, can often utilize the chalk-writing letter written with chalk, have a lot of chalk dusts at every turn when erasing the board and be inhaled in the lung, health there is injury.
Summary of the invention
The utility model technical issues that need to address are to provide a kind of blackboard eraser of clean dust.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of blackboard eraser of clean dust, comprise pressure sensor, battery, pressing tablet contact, fan, receiver, it is characterized in that chalkboard eraser inside fixes a pressure sensor, when the contact of two metal pressing sheets, form together a closed-loop path, fan work by pressure sensor, battery, metal pressing sheet contact, four parts of small-sized fans.
The beneficial effects of the utility model are: absorb chalk dust, chalk dust flew upward this problem everywhere when solution erased the board, and avoids teacher and student to suck health is worked the mischief.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is structural representation of the present utility model, and wherein 1 is pressure sensor, the 2nd, and battery, the 3rd, pressing tablet contact, the 4th, fan, the 5th, receiver.
The specific embodiment
In the drawings, press pressure sensor 1, then touch the metal pressing sheet, make contact 3 contacts of two metal pressing sheets, then form together a closed-loop path by pressure sensor 1, battery 2, metal pressing sheet contact 3,4 four parts of small-sized fans, fan 4 work, by the rotation absorption chalk dust of fan 4, last chalk dust enters in the receiver 5.
Claims (1)
1. the blackboard eraser of a clean dust, comprise pressure sensor, battery, pressing tablet contact, fan, receiver, it is characterized in that chalkboard eraser inside fixes a pressure sensor, when the contact of two metal pressing sheets, form together a closed-loop path, fan work by pressure sensor, battery, metal pressing sheet contact, four parts of small-sized fans.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220410353 CN202716640U (en) | 2012-08-20 | 2012-08-20 | Blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220410353 CN202716640U (en) | 2012-08-20 | 2012-08-20 | Blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202716640U true CN202716640U (en) | 2013-02-06 |
Family
ID=47618474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220410353 Expired - Fee Related CN202716640U (en) | 2012-08-20 | 2012-08-20 | Blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202716640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104044388A (en) * | 2014-06-30 | 2014-09-17 | 郭彬彬 | Intelligent dustproof blackboard eraser |
-
2012
- 2012-08-20 CN CN 201220410353 patent/CN202716640U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104044388A (en) * | 2014-06-30 | 2014-09-17 | 郭彬彬 | Intelligent dustproof blackboard eraser |
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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: 20130206 Termination date: 20130820 |