CN201353960Y - Telescopic blackboard eraser - Google Patents
Telescopic blackboard eraser Download PDFInfo
- Publication number
- CN201353960Y CN201353960Y CNU2008201581825U CN200820158182U CN201353960Y CN 201353960 Y CN201353960 Y CN 201353960Y CN U2008201581825 U CNU2008201581825 U CN U2008201581825U CN 200820158182 U CN200820158182 U CN 200820158182U CN 201353960 Y CN201353960 Y CN 201353960Y
- Authority
- CN
- China
- Prior art keywords
- blackboard eraser
- expansion link
- hole
- telescopic rod
- telescopic
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a telescopic blackboard eraser, comprising a blackboard eraser main body, and characterized in that, the centre at the bottom of the blackboard eraser main body is provided with an axle hole, and a telescopic rod is arranged at the axle hole. The axle hole is connected with the telescopic rod by superglue, the blackboard eraser is provided with a through hole in the direction perpendicular to the axial direction of the telescopic rod, and the telescopic rod is provided with a small hole in the same size at a corresponding position. An iron wire is arranged in the through hole of the blackboard eraser and the small hole of the telescopic rod and passes across the blackboard eraser and the telescopic rod. By adopting the technical scheme, people of different heights can erase the high and low positions of the blackboard.
Description
Technical field
The utility model relates to a kind of blackboard eraser, particularly a kind of telescopic blackboard eraser.
Background technology
Teacher or classmate are when erasing the board, because height differs, the shorter people who has just wipes less than blackboard, and therefore designing a kind of blackboard eraser that has expansion link seems extremely important.
The utility model content
Technical problem to be solved in the utility model provides a kind of telescopic blackboard eraser, to solve the blackboard of above-mentioned somebody's wiping less than higher position.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of telescopic blackboard eraser comprises the blackboard eraser body, it is characterized in that, described blackboard eraser body bottom center has an axis hole, in the axis hole position one expansion link is installed.
Adopt seccotine to be connected between described axis hole and the expansion link.
Described blackboard eraser is having a through hole with the axial vertical direction of expansion link, and expansion link has the aperture of identical size in corresponding position; In the aperture of the through hole of blackboard eraser and expansion link, an iron wire is set and crosses this blackboard eraser and expansion link.
After adopting above technical scheme, the people of different height just can clip the high lower of blackboard.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, a kind of telescopic blackboard eraser comprises blackboard eraser body 1, and described blackboard eraser body 1 bottom center has an axis hole 2, the dark 2-5cm of this axis hole, and shaft hole diameter and built-in expansion link 3 are corresponding.Scribbling seccotine toward axis hole 2 upper ends interior and expansion link 3 connects.
Referring to Fig. 2, a kind of telescopic blackboard eraser has blackboard eraser body 1 and expansion link 3.Have a through hole 11 with the axial vertical direction of expansion link on blackboard eraser body 1, expansion link 3 has the aperture 31 of identical size in corresponding position; 31 li an iron wire 4 is set at the aperture of the through hole 11 of blackboard eraser body 1 and expansion link 3 and crosses this blackboard eraser body and expansion link, fixedly expansion link and blackboard eraser body.Other technical scheme is identical with embodiment 1.
After adopting above technical scheme, the people of different height just can clip the high lower of blackboard.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1, a kind of telescopic blackboard eraser comprises the blackboard eraser body, it is characterized in that, described blackboard eraser body bottom center has an axis hole, in the axis hole position one expansion link is installed.
2, a kind of telescopic blackboard eraser as claimed in claim 1 is characterized in that, adopts seccotine to be connected between described axis hole and the expansion link.
3, a kind of telescopic blackboard eraser as claimed in claim 1 is characterized in that, described blackboard eraser is having a through hole with the axial vertical direction of expansion link, and expansion link has the aperture of identical size in corresponding position; In the aperture of the through hole of blackboard eraser and expansion link, an iron wire is set and crosses this blackboard eraser and expansion link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201581825U CN201353960Y (en) | 2008-12-30 | 2008-12-30 | Telescopic blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201581825U CN201353960Y (en) | 2008-12-30 | 2008-12-30 | Telescopic blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201353960Y true CN201353960Y (en) | 2009-12-02 |
Family
ID=41410301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201581825U Expired - Fee Related CN201353960Y (en) | 2008-12-30 | 2008-12-30 | Telescopic blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201353960Y (en) |
-
2008
- 2008-12-30 CN CNU2008201581825U patent/CN201353960Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091202 Termination date: 20101230 |