CN2754898Y - Blackboard - Google Patents
Blackboard Download PDFInfo
- Publication number
- CN2754898Y CN2754898Y CN 200420111343 CN200420111343U CN2754898Y CN 2754898 Y CN2754898 Y CN 2754898Y CN 200420111343 CN200420111343 CN 200420111343 CN 200420111343 U CN200420111343 U CN 200420111343U CN 2754898 Y CN2754898 Y CN 2754898Y
- Authority
- CN
- China
- Prior art keywords
- blackboard
- utility
- model
- chute
- blackboards
- 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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Images
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a blackboard. The utility model is characterized in that The blackboard is composed of two board bodies, wherein the two board bodies are respectively arranged in two sliding ways. Because the utility model is provided with two blackboards, the blackboards are arranged in the sliding ways. In this way, after the teacher writes full of one blackboard at teaching time, slides the blackboard and uses the other blackboard. In this way, the repeated wiping and writing can be avoided, and thus, the class efficiency can be improved, the blackboard can be moved leftward and rightward to cause the students at different positions to see clearly, and thus, the eyesight of students can be protected.
Description
Affiliated field
The utility model relates to a kind of blackboard.
Background technology
The present blackboard that uses has fixed, promptly directly is made on the body of wall with construction material; Another kind is the electric lifting blackboard, and the former is often erasable repeatedly in the use, thereby has taken time in classroom; Latter's cost is higher, and especially poorer remote mountain areas can not be popularized in each classroom.These two kinds of blackboards all exist in the student who is sitting in the both sides, classroom in the teaching, and easily formation is reflective, is not easy to the deficiency of observation of students.
Technology contents
The purpose of this utility model is in order to solve the deficiencies in the prior art part, provide a kind of needn't often erasable, convenient for student viewing blackboard.
For achieving the goal, the utility model provides following technical solution:
A kind of blackboard is characterized in that: this blackboard is made of the two boards body, and the two boards body places respectively in the twice chute.
Feature of the present utility model is that also described chute is parallel twice cell body.
Feature of the present utility model also is, described every blackboard is folded by two-layer chute up and down.
Feature of the present utility model also is, is provided with roller bearing between described every blackboard and the chute.
Feature of the present utility model also is, the big and two blackboard length sums of the length of described chute.
The utility model is because blackboard is set to two; and blackboard places in the chute, like this, and in the time of at school; the teacher is after writing a full blackboard; Sliding blackboard is reserved another piece blackboard, so just can avoid repeatedly erasable; thereby improved classroom efficiency; by the move left and right blackboard, can make the student of different angles see content clearly, thereby protect student's eyesight.
Description of drawings
Accompanying drawing is the utility model structural representation
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
As shown in the figure, blackboard is made of two boards body 1,2, and two boards body 1,2 places respectively in the parallel twice chute 3,4.Every blackboard is folded by two-layer chute up and down.Between every blackboard and the chute roller bearing 5 is arranged.
For the utility model, the big and two blackboard length sums of the length of chute.
Claims (4)
1, a kind of blackboard is characterized in that: this blackboard is made of two boards body (1,2), and the two boards body places respectively in the twice chute (3,4).
2, blackboard according to claim 1 is characterized in that: described chute is parallel twice cell body.
3, blackboard according to claim 1 is characterized in that: described every blackboard is folded by two-layer chute up and down.
4, blackboard according to claim 1 is characterized in that: be provided with roller bearing (5) between described every blackboard and the chute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420111343 CN2754898Y (en) | 2004-11-08 | 2004-11-08 | Blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420111343 CN2754898Y (en) | 2004-11-08 | 2004-11-08 | Blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2754898Y true CN2754898Y (en) | 2006-02-01 |
Family
ID=35928531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420111343 Expired - Fee Related CN2754898Y (en) | 2004-11-08 | 2004-11-08 | Blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2754898Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253046A (en) * | 2013-05-24 | 2013-08-21 | 东北大学 | Wet-type and dust-free blackboard cleaner |
| CN103978813A (en) * | 2014-05-15 | 2014-08-13 | 周维保 | Trinity teaching board |
| CN106696542A (en) * | 2015-07-28 | 2017-05-24 | 李海龙 | Writing board component and teaching board comprising writing board component |
| CN115676241A (en) * | 2023-01-04 | 2023-02-03 | 太重集团向明智能装备股份有限公司 | Rubber belt anti-wrapping device of circular tube belt conveyor |
-
2004
- 2004-11-08 CN CN 200420111343 patent/CN2754898Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253046A (en) * | 2013-05-24 | 2013-08-21 | 东北大学 | Wet-type and dust-free blackboard cleaner |
| CN103253046B (en) * | 2013-05-24 | 2015-01-28 | 东北大学 | Wet-type and dust-free blackboard cleaner |
| CN103978813A (en) * | 2014-05-15 | 2014-08-13 | 周维保 | Trinity teaching board |
| CN106696542A (en) * | 2015-07-28 | 2017-05-24 | 李海龙 | Writing board component and teaching board comprising writing board component |
| CN115676241A (en) * | 2023-01-04 | 2023-02-03 | 太重集团向明智能装备股份有限公司 | Rubber belt anti-wrapping device of circular tube belt conveyor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |