CN201342872Y - Blackboard - Google Patents
Blackboard Download PDFInfo
- Publication number
- CN201342872Y CN201342872Y CNU2008201568021U CN200820156802U CN201342872Y CN 201342872 Y CN201342872 Y CN 201342872Y CN U2008201568021 U CNU2008201568021 U CN U2008201568021U CN 200820156802 U CN200820156802 U CN 200820156802U CN 201342872 Y CN201342872 Y CN 201342872Y
- Authority
- CN
- China
- Prior art keywords
- blackboard
- utility
- model
- track
- picture
- 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
A blackboard relates to a teaching supply. Four pulley tracks are arranged on the four edges of the blackboard; and long rulers are mounted between a left track and a right track as well as between an upper track and a lower track respectively. When in use, the long rulers can be moved to the position in which a picture is drawn along the pulley tracks. The utility model has the beneficial effects that the problem that length of a ruler is insufficient when a teacher draws the picture on the blackboard is overcome.
Description
Technical field
The utility model relates to a kind of realia, particularly a kind of blackboard with scale.
Background technology
Blackboard is the article of indispensability of last class hour, and teacher need be drawing schematic diagram or writing on the blackboard etc. write on the blackboard on the blackboard, so that the student understands easily through regular meeting during to students explanation knowledge.But teacher often can run into the situation that need use ruler on blackboard when drawing again, now general blackboard all is an independent blackboard, the big ruler that can only teacher when running into this situation carries teaching usefulness, and scale can appear in the big ruler of teaching usefulness or length is not enough, causes efficient on class to reduce.
The utility model content
Technical problem to be solved in the utility model is: the not enough problem of ruler length when overcoming teacher and drawing on blackboard, the utility model provides a kind of four pulley tracks that are provided with on the four edges of blackboard, between the track of the left and right sides and be separately installed with the blackboard of long chi between the last lower railway, to overcome above problem.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of blackboard is provided with four pulley tracks on the four edges of blackboard, be separately installed with long chi between the track of the left and right sides and between the last lower railway.During use long chi is got final product along the place that pulley track moves to the needs picture.The beneficial effects of the utility model are: the not enough problem of ruler length when overcoming teacher and drawing on blackboard.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is a kind of blackboard front view of the utility model.
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.
As shown in Figure 1, around blackboard 1, four pulley tracks 3 are installed, horizontal scale 22 is installed between the track of the left and right sides, vertical scale 21 is installed between last lower railway.During use, move horizontal scale 22 or vertical scale 21 can conveniently be mapped to the place that needs picture along track.
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 (1)
1. blackboard, it is characterized in that: the four edges at blackboard is provided with four pulley tracks, is being separately installed with long chi between the track of the left and right sides and between the last lower railway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201568021U CN201342872Y (en) | 2008-12-09 | 2008-12-09 | Blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201568021U CN201342872Y (en) | 2008-12-09 | 2008-12-09 | Blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201342872Y true CN201342872Y (en) | 2009-11-11 |
Family
ID=41274456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201568021U Expired - Fee Related CN201342872Y (en) | 2008-12-09 | 2008-12-09 | Blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201342872Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108621653A (en) * | 2018-05-10 | 2018-10-09 | 何川 | A kind of mathematical education multifunctional assisting device |
-
2008
- 2008-12-09 CN CNU2008201568021U patent/CN201342872Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108621653A (en) * | 2018-05-10 | 2018-10-09 | 何川 | A kind of mathematical education multifunctional assisting device |
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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: 20091111 Termination date: 20101209 |