CN202782342U - Expansion blackboard - Google Patents
Expansion blackboard Download PDFInfo
- Publication number
- CN202782342U CN202782342U CN 201220334446 CN201220334446U CN202782342U CN 202782342 U CN202782342 U CN 202782342U CN 201220334446 CN201220334446 CN 201220334446 CN 201220334446 U CN201220334446 U CN 201220334446U CN 202782342 U CN202782342 U CN 202782342U
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- CN
- China
- Prior art keywords
- winding shaft
- blackboard
- curtain
- writing
- scroll
- 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 an expansion blackboard, and belongs to teaching tools. The expansion blackboard comprises a blackboard body which comprises a support plate, an upper scroll, a lower scroll and a writing curtain. The upper scroll and the lower scroll are respectively placed at the upper end and the lower end of the support plate. One end of the writing curtain is wound on the upper scroll and fixedly connected with the upper scroll at the end of the writing curtain. The other end of the writing curtain is wound on the lower scroll and fixedly connected with the lower scroll at the end of the writing curtain. One end of the upper scroll is connected with an output end of a motor through a gear transmission mechanism, and the upper scroll and the lower scroll are connected through a transmission chain. According to the extension blackboard, the capacity of the blackboard is greatly expanded, and accordingly a teacher can lecture and students can study conveniently.
Description
Technical field
The utility model relates to a kind of teaching aid, specifically a kind of dilatation blackboard.
Background technology
At present, carry out teaching and all be unable to do without blackboard, existing blackboard is the fixing flat board of a block size, after the word on the blackboard is write completely, want to continue to write and to wipe a part to existing writing, very important content also is forced to wipe in some cases, is unfavorable for student's study, causes teaching efficiency to descend.
Summary of the invention
The purpose of this utility model is to provide a kind of dilatation blackboard, and capacity expands this blackboard greatly under the prerequisite that takes up room not increasing, and is conducive to the carrying out of teaching.
The technical scheme in the invention for solving the technical problem is:
The dilatation blackboard, comprise the blackboard body, described blackboard body comprises gripper shoe, upper winding shaft, lower winding shaft and writes curtain, described upper winding shaft and lower winding shaft lay respectively at the top and bottom of gripper shoe, described curtain one end of writing is wrapped on the upper winding shaft and in the end and is fixedly connected with upper winding shaft, and the other end of writing curtain is wrapped on the lower winding shaft and in the end and is fixedly connected with lower winding shaft; One end of upper winding shaft is connected by the output shaft of gear drive with a motor, is connected by driving-chain between upper winding shaft and the lower winding shaft.
The described outside of writing curtain is provided with a hairbrush, and the length of described hairbrush is not less than the width of writing curtain, and the both sides of hairbrush and described gripper shoe form and are flexibly connected.
The beneficial effects of the utility model are:
1, traditional blackboard panel is changed into writes curtain, write to roll and to discharge without the curtain of writing after curtain is write completely and continue to use, greatly expanded the capacity of blackboard, the content on the blackboard is wiped after can recording for the student again, improves teaching efficiency.
2, be provided with length and be not less than the hairbrush of writing the curtain width, hairbrush can play the effect that cleaning is write curtain, has greatly improved cleaning efficiency, has alleviated the workload that erases the board.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1 gripper shoe, 2 upper winding shafts, 3 lower winding shafts, 4 write curtain, 5 hairbrush, 6 driving-chains, 7 motors.
The specific embodiment
As shown in Figure 1.The dilatation blackboard, comprise the blackboard body, described blackboard body comprises gripper shoe 1, upper winding shaft 2, lower winding shaft 3 and writes curtain 4, described upper winding shaft 2 and lower winding shaft 3 lay respectively at the top and bottom of gripper shoe 1, described curtain 4 one ends of writing are wrapped on the upper winding shaft 2 and in the end and are fixedly connected with upper winding shaft 2, and the other end of writing curtain 4 is wrapped on the lower winding shaft 3 and in the end and is fixedly connected with lower winding shaft 3; One end of upper winding shaft 2 is connected by the output shaft of gear drive with a motor 7, is connected by driving-chain 6 between upper winding shaft 2 and the lower winding shaft 3.
The described outside of writing curtain 4 is provided with a hairbrush 5, and the length of described hairbrush 5 is not less than the width of writing curtain 4, and hairbrush 5 forms flexible connection with the both sides of described gripper shoe 1.
During use, write writing curtain 4, with write part that curtain 4 is exposed on the external write full after, starter motor 7, the output shaft of motor 7 drives upper winding shaft 2 rotations, upper winding shaft 2 drives lower winding shafts 3 rotations by driving-chain 6, the part of writing full word can be rolled to discharge simultaneously untapped part and continue to write for people, has greatly expanded the capacity of blackboard.Hairbrush 5 can play the effect that cleaning is write curtain 4 in addition, has greatly improved cleaning efficiency, has alleviated the workload that erases the board.
Claims (2)
1. dilatation blackboard, comprise the blackboard body, it is characterized in that, described blackboard body comprises gripper shoe, upper winding shaft, lower winding shaft and writes curtain, described upper winding shaft and lower winding shaft lay respectively at the top and bottom of gripper shoe, described curtain one end of writing is wrapped on the upper winding shaft and in the end and is fixedly connected with upper winding shaft, and the other end of writing curtain is wrapped on the lower winding shaft and in the end and is fixedly connected with lower winding shaft; One end of upper winding shaft is connected by the output shaft of gear drive with a motor, is connected by driving-chain between upper winding shaft and the lower winding shaft.
2. dilatation blackboard according to claim 1 is characterized in that, the described outside of writing curtain is provided with a hairbrush, and the length of described hairbrush is not less than the width of writing curtain, and the both sides of hairbrush and described gripper shoe form and are flexibly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334446 CN202782342U (en) | 2012-07-12 | 2012-07-12 | Expansion blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334446 CN202782342U (en) | 2012-07-12 | 2012-07-12 | Expansion blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202782342U true CN202782342U (en) | 2013-03-13 |
Family
ID=47809666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220334446 Expired - Fee Related CN202782342U (en) | 2012-07-12 | 2012-07-12 | Expansion blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202782342U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774182A (en) * | 2012-07-12 | 2012-11-14 | 侯圣春 | Capacity expanding blackboard |
| CN104290506A (en) * | 2014-10-15 | 2015-01-21 | 丁玉清 | Novel automatic cleaning blackboard |
| CN104669868A (en) * | 2015-02-06 | 2015-06-03 | 刘志彬 | Novel dust-free blackboard |
-
2012
- 2012-07-12 CN CN 201220334446 patent/CN202782342U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774182A (en) * | 2012-07-12 | 2012-11-14 | 侯圣春 | Capacity expanding blackboard |
| CN104290506A (en) * | 2014-10-15 | 2015-01-21 | 丁玉清 | Novel automatic cleaning blackboard |
| CN104669868A (en) * | 2015-02-06 | 2015-06-03 | 刘志彬 | Novel dust-free blackboard |
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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: 20130313 Termination date: 20130712 |