CN201211800Y - Dual-purpose eraser - Google Patents
Dual-purpose eraser Download PDFInfo
- Publication number
- CN201211800Y CN201211800Y CNU2008200129915U CN200820012991U CN201211800Y CN 201211800 Y CN201211800 Y CN 201211800Y CN U2008200129915 U CNU2008200129915 U CN U2008200129915U CN 200820012991 U CN200820012991 U CN 200820012991U CN 201211800 Y CN201211800 Y CN 201211800Y
- Authority
- CN
- China
- Prior art keywords
- plate
- chalk
- blackboard
- sheet material
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a dual-purpose blackboard eraser. A layer of scrape hair is stuck on the front surface of a plate; the back face of the plate is provided with a plurality of jacks in sequence with equidistant spacing, the depth of each jack is less than the length of a piece of chalk, and the inside diameter of the jack is slightly more than the diameter of the chalk. When drawing beelines or parallels, a user can insert the chalk at the jacks at the back face of the plate, overturns the plate to enable the chalk to contact the blackboard face, holds the plate by hand to cause the plate to slide on the blackboard and then can draw parallels or beelines only by keeping the horizontal movement of the plate. The utility model has the advantages of simple structure, convenience, practicality, reasonable technology, beautiful appearance, and the like.
Description
Technical field the utility model relates to a kind of educational aid, and especially a kind of Double-purpose blackboard is wiped.
Background technology is well-known, and blackboard eraser is a most important blackboard wiping instrument in the teaching.But, in teaching process, usually also need other drawing instrument, for example: ruler, chalk etc., occupation space is bigger.In addition, when drawing straight line or parallel lines, teachers and students need multiple instrument to operate simultaneously just and can finish, and exist than mistake, make troubles to teaching.For this reason, we provide a kind of new blackboard that can draw parallel lines to wipe very necessity.
The summary of the invention the purpose of this utility model provides a kind of Double-purpose blackboard and wipes, and is used to solve the problem of ordinary blackboard eraser function singleness.
For achieving the above object, the utility model Double-purpose blackboard is wiped, and comprises rectangle sheet material and snag, pastes one deck snag at the sheet material front surface; Equidistantly offer a plurality of jacks in turn at the sheet material back side, the jack degree of depth is less than chalk length, and internal diameter is slightly larger than the chalk diameter.
After adopting said structure, the user can normally use the chalk writing on the sheet material snag blackboard wiping.When drawing straight line or parallel lines, the user can assign into chalk the jack place at the sheet material back side, and the sheet material that overturns then allows chalk contact with blackboard surface, holds sheet material, slides on blackboard, as long as keep the horizontal movement of sheet material, just can draw parallel lines or straight line.
The utility model has the advantages that: simple in structure, convenient and practical, technology rationally, good looking appearance, can bring into play the line drawing function, satisfy people's different demands.
The overall structure schematic diagram that description of drawings Fig. 1 wipes for the utility model Double-purpose blackboard.
The specific embodiment as shown in Figure 1, the utility model Double-purpose blackboard is wiped, and comprises rectangle sheet material 1 and snag 2, pastes one deck snag 2 at sheet material 1 front surface; Equidistantly offer a plurality of jacks 3 in turn at sheet material 1 back side, jack 3 degree of depth are less than chalk length, and internal diameter is slightly larger than the chalk diameter.
Claims (1)
1, a kind of Double-purpose blackboard is wiped, and comprises rectangle sheet material (1) and snag (2), it is characterized in that: paste one deck snag (2) at sheet material (1) front surface; Equidistantly offer a plurality of jacks (3) in turn at sheet material (1) back side, jack (3) degree of depth is less than chalk length, and internal diameter is slightly larger than the chalk diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200129915U CN201211800Y (en) | 2008-05-21 | 2008-05-21 | Dual-purpose eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200129915U CN201211800Y (en) | 2008-05-21 | 2008-05-21 | Dual-purpose eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201211800Y true CN201211800Y (en) | 2009-03-25 |
Family
ID=40495960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200129915U Expired - Fee Related CN201211800Y (en) | 2008-05-21 | 2008-05-21 | Dual-purpose eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201211800Y (en) |
-
2008
- 2008-05-21 CN CNU2008200129915U patent/CN201211800Y/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: 20090325 |