CN201784352U - Blackboard eraser ruler - Google Patents
Blackboard eraser ruler Download PDFInfo
- Publication number
- CN201784352U CN201784352U CN2010202891953U CN201020289195U CN201784352U CN 201784352 U CN201784352 U CN 201784352U CN 2010202891953 U CN2010202891953 U CN 2010202891953U CN 201020289195 U CN201020289195 U CN 201020289195U CN 201784352 U CN201784352 U CN 201784352U
- Authority
- CN
- China
- Prior art keywords
- blackboard eraser
- ruler
- gripper shoe
- scale
- cleaning layer
- 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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- Holders For Apparel And Elements Relating To Apparel (AREA)
Abstract
The utility model discloses a blackboard eraser ruler, which comprises a supporting plate and a wiping layer covering one lateral surface of the supporting plate. At least one of the lateral edges of the supporting plate positioned on the periphery of the wiping layer is a straight line with scale marks. The blackboard eraser ruler combines the functions of a backboard eraser and a ruler, and facilitates revision and wiping while marking and drawing in teaching process.
Description
Technical field
The utility model relates to a kind of teaching aid, relates in particular to a kind of blackboard eraser.
Background technology
Blackboard eraser is the teaching aid of using always, generally is to be made of the gripper shoe of wooden or plastic material and the cleaning layer that covers gripper shoe one side, and cleaning layer mostly is fine hair or flannelette napped fabric layer, hand-held supports plate during use, and cleaning layer is towards blackboard one side blackboard wiping.
In field research, also often use ruler, should take blackboard eraser to take ruler, inconvenience very again so sometimes.
Summary of the invention
The utility model provides a kind of can work as the blackboard eraser that ruler is used.
A kind of blackboard eraser chi, the cleaning layer that comprises gripper shoe and cover gripper shoe one side, described gripper shoe is in that to have a side at least in the side around the cleaning layer be straight line and have scale.
Gripper shoe be in have at least in the side around the cleaning layer side be straight line this side of having guaranteed to utilize gripper shoe as ruler, the scale that has is convenient for measuring and maps.
Described gripper shoe is a rectangle, can certainly be other shapes, and rectangle is convenient to hold, and has four straight flanges.
Described being in the cleaning layer side on every side, a side that is in the rectangle length direction has scale, like this makes as much as possible to have the regional long, easy to use of scale.
Cleaning layer can adopt general fine hair or flannelette, is fixed on the gripper shoe by modes such as bondings, and described scale can adopt centimetre or other long measure as required.
The utility model blackboard eraser chi combines the function of blackboard eraser and ruler, makes convenient modification and wiping in the line mapping in teaching process.
Description of drawings
Fig. 1 is the structural representation of the utility model blackboard eraser chi.
The specific embodiment
Referring to Fig. 1, the utility model blackboard eraser chi, the cleaning layer 2 that comprises gripper shoe 1 and cover gripper shoe 1 one sides.
Gripper shoe 1 adopts wooden or plastic material, and cleaning layer 2 adopts general fine hair or flannelette, is fixed on the gripper shoe 1 by bonding mode.
Gripper shoe 1 is a rectangle, is convenient to hold, and has four straight flanges, has scale 3 on the side therein, and the side that has scale 3 is in the length direction of rectangle gripper shoe 1, makes to have the regional long, easy to use of scale.
Scale 3 can adopt centimetre or other long measure as required.The utility model blackboard eraser chi combines the function of blackboard eraser and ruler, makes convenient modification and wiping in the line mapping in the teaching process.
The not strict restriction of the absolute dimension of the utility model blackboard eraser chi, can be provided with as required, ruler requires slightly long for well generally speaking, but the size of blackboard eraser again can not be too big, also can be inconvenient otherwise use, gripper shoe 1 can be made trapezoidally so, utilize and the longlyest in trapezoidal go to the bottom to ruler and have scale.
Equally, also gripper shoe 1 can be made semicircle, so both can draw straight line, also can utilize excircle trace or camber line, enrich its function and effect more with semicircular diameter position.
Claims (3)
1. blackboard eraser chi, the cleaning layer that comprises gripper shoe and cover gripper shoe one side is characterized in that, described gripper shoe is in that to have a side at least in the side around the cleaning layer be straight line and have scale.
2. blackboard eraser chi as claimed in claim 1 is characterized in that, described gripper shoe is a rectangle.
3. blackboard eraser chi as claimed in claim 2 is characterized in that, described being in the cleaning layer side on every side, and a side that is in the rectangle length direction has scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202891953U CN201784352U (en) | 2010-08-11 | 2010-08-11 | Blackboard eraser ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202891953U CN201784352U (en) | 2010-08-11 | 2010-08-11 | Blackboard eraser ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201784352U true CN201784352U (en) | 2011-04-06 |
Family
ID=43816330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202891953U Expired - Fee Related CN201784352U (en) | 2010-08-11 | 2010-08-11 | Blackboard eraser ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201784352U (en) |
-
2010
- 2010-08-11 CN CN2010202891953U patent/CN201784352U/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: 20110406 Termination date: 20110811 |