CN201355424Y - Indoor inflatable teaching projecting screen - Google Patents
Indoor inflatable teaching projecting screen Download PDFInfo
- Publication number
- CN201355424Y CN201355424Y CN 200920022362 CN200920022362U CN201355424Y CN 201355424 Y CN201355424 Y CN 201355424Y CN 200920022362 CN200920022362 CN 200920022362 CN 200920022362 U CN200920022362 U CN 200920022362U CN 201355424 Y CN201355424 Y CN 201355424Y
- Authority
- CN
- China
- Prior art keywords
- fixed
- curtain
- screen
- spool
- communicating pipe
- 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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- Overhead Projectors And Projection Screens (AREA)
Abstract
The utility model discloses an indoor inflatable teaching projecting screen, which comprises a scroll (1) and a screen (2) whose upper edge is fixed on the scroll (1), and is characterized in that two ends of the scroll (1) are fixed on rotary wheels (10) fixed on a left and a right fixed seats (3, 3'), upper rubber suckers (4) are respectively fixed on the left and the right fixed seats (3, 3'), an upper pressure support balloon (5) is fixed on the left, the right and the lower side edge of the screen (2), and is communicated with an air inflation bag (6) through a communicating pipe (7), and a one-way valve (9) and an air release valve (8) are arranged on the communicating pipe (7). Compared with a screen support currently used, the indoor inflatable teaching projecting screen not only has simple structure and easy operation, but also can be easily transported, and has small occupied space.
Description
Technical field
The utility model relates to a kind of projection teaching aid, specifically a kind of indoor inflatable teaching projection screen.
Background technology
In teaching demonstration, often image is projected on the curtain with video projection devices and demonstrate, to improve teaching demonstration effect and quality, general at present employing special stand is propped up the rectangle curtain, this special stand comprises base, spool, hanging scroll and support bar constitute, one end of rectangle curtain twists on the spool, the other end hangs on the support bar by hanging scroll, though it is smooth that this kind support can make curtain hang, but also have weak point: special stand must adopt high-intensity support to fix, weight is heavier, and carrying is inconvenient, deposit simultaneously need be bigger the space.
Summary of the invention
The purpose of this utility model is to provide a kind of carrying simple in structure, easy to operate, easy, is applicable to the indoor inflatable teaching projection screen of indoor instruction demonstration.
For reaching above purpose, the technical scheme that the utility model adopted is: this indoor inflatable teaching projection screen, by spool, curtain constitutes, the upper edge of curtain is fixed on the spool, the two ends that it is characterized in that spool are fixed on a left side, on the rotor wheel in the right holder, on a left side, the fixing respectively rubber suction cups of going up on the right holder, can be by rubber suction cups with a left side, right holder is fixed on the wall suitable in the classroom, spool can be on a left side, rotate between the right holder, be convenient to the winding or the relieving of curtain, on the left side of curtain, right, lower side is along the last fixing air pressure support cell that goes up, and the air pressure support cell was connected with gas cell by communicating pipe, on communicating pipe, be provided with retaining valve and air release, by manually pushing gas cell, give the inflation of air pressure support cell, after the air pressure support cell expands, the smooth expansion of curtain, do teaching demonstration and use.The utility model is also implemented by following measure: the fixing handler of going up on the rotor wheel in the described right holder, in the process of curtain expansion and winding, come complete operation by handler, make operating personnel can directly contact curtain, guarantee the curtain neat and tidy.When using the utility model, left and right holder is adsorbed on the wall in the classroom or on the blackboard, rotates handler by rubber suction cups, curtain slowly launches, push the gas cell inflation, the air pressure support cell expands, and makes curtain smooth stable, the projection that promptly can be used for imparting knowledge to students demonstration, after using up, open air release, after the gas in the air pressure support cell is discharged, rotate handler, curtain is wound on the spool gets final product.
The beneficial effects of the utility model are: prop up support with the curtain of present use and compare, and operation not only simple in structure, easy, and also it is little to carry easily, take up room.
Description of drawings
Structure front-view schematic diagram when Fig. 1 launches for the utility model.
Fig. 2 analyses and observe enlarged diagram for the utility model along A-A.
Embodiment
Make the utility model with reference to accompanying drawing 1,2.This indoor inflatable teaching projection screen, by spool 1, curtain 2 constitutes, the upper edge of curtain 2 is fixed on the spool 1, the two ends that it is characterized in that spool 1 are fixed on a left side, right holder 3, on the 3 ' interior rotor wheel 10, on a left side, right holder 3,3 ' on the fixing respectively rubber suction cups 4 of going up, can be by rubber suction cups 4 with a left side, right holder 3,3 ' be fixed on the wall suitable in the classroom, spool 1 can be on a left side, right holder 3,3 ' between rotate, be convenient to the winding or the relieving of curtain 2, left side at curtain 2, right, lower side is along the last fixing air pressure support cell 5 that goes up, air pressure support cell 5 was connected with gas cell 6 by communicating pipe 7, on communicating pipe 7, be provided with retaining valve 9 and air release 8, by manually pushing gas cell 6, give the air pressure support cell 5 inflations, after air pressure support cell 5 expands,, do teaching demonstration and use curtain 2 smooth expansion.The fixing handler 11 of going up the rotor wheel 10 of described right holder 3 ' interior, curtain 2 launch and the process of twining in, come complete operation by handler 11, make operating personnel can directly contact curtain 2, guarantee curtain 2 neat and tidies.
Claims (2)
1, a kind of indoor inflatable teaching projection screen, by spool (1), curtain (2) constitutes, the upper edge of curtain (2) is fixed on the spool (1), the two ends that it is characterized in that spool (1) are fixed on a left side, right holder (3,3 ') in rotor wheel (10) on, on a left side, right holder (3,3 ') on the fixing respectively rubber suction cups (4) of going up, left side in curtain (2), right, lower side is along the last fixing air pressure support cell (5) that goes up, air pressure support cell (5) was connected with gas cell (6) by communicating pipe (7), was provided with retaining valve (9) and air release (8) on communicating pipe (7).
2, indoor inflatable teaching projection screen according to claim 1 is characterized in that the rotor wheel (10) in the described right holder (3 ') is gone up the fixing handler (11) of going up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920022362 CN201355424Y (en) | 2009-02-27 | 2009-02-27 | Indoor inflatable teaching projecting screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920022362 CN201355424Y (en) | 2009-02-27 | 2009-02-27 | Indoor inflatable teaching projecting screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201355424Y true CN201355424Y (en) | 2009-12-02 |
Family
ID=41411766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920022362 Expired - Fee Related CN201355424Y (en) | 2009-02-27 | 2009-02-27 | Indoor inflatable teaching projecting screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201355424Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111028570A (en) * | 2019-12-26 | 2020-04-17 | 成都师范学院 | Intelligent reading library |
-
2009
- 2009-02-27 CN CN 200920022362 patent/CN201355424Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111028570A (en) * | 2019-12-26 | 2020-04-17 | 成都师范学院 | Intelligent reading library |
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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: 20091202 Termination date: 20100227 |