CN204360594U - A kind of English teaching projection screen - Google Patents
A kind of English teaching projection screen Download PDFInfo
- Publication number
- CN204360594U CN204360594U CN201520018593.4U CN201520018593U CN204360594U CN 204360594 U CN204360594 U CN 204360594U CN 201520018593 U CN201520018593 U CN 201520018593U CN 204360594 U CN204360594 U CN 204360594U
- Authority
- CN
- China
- Prior art keywords
- projection screen
- rotating shaft
- housing
- motor
- english teaching
- 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 provides a kind of English teaching projection screen, and when solving projection screen because packing up destroyed and unexpected power-off for a long time, projection screen cannot the problem of automatic retracted; Its scheme is, comprise projection screen, one end of described projection screen is fixedly connected with the first housing, be provided with the first rotating shaft in first housing, one end connecting handle of the first rotating shaft, the other end of projection screen is fixedly connected with the second housing, second rotating shaft is installed in the second housing, second rotating shaft connects the first motor, and the first motor and switch are electrically connected, and switch is connected with clip; The utility model structure is simple, and when projection screen is packed up, press switch when clip rotates, disconnect the first motor, the second rotating shaft quits work with the disconnection of motor, and projection screen is packed up action and stopped, and avoids projection screen destroyed because packing up for a long time; When unexpected power-off, projection screen can manually be packed up, and solves the problem taking blackboard.
Description
Technical field
The utility model relates to English teaching equipment technical field, particularly a kind of English teaching projection screen.
Background technology
In English teaching, most English teacher adopts multimedia teaching, multimedia teaching is in teaching process, according to the feature of instructional objective and teaching object, passes through Instructional Design, choose reasonable and utilization Modern Teaching Medium, and organically combine with Traditional teaching means, the common overall process participating in teaching, with media information function in student, form rational teaching process structure, reach optimized teaching efficiency.
In multimedia teaching, projection screen adopts the mode of lifting, generally can be installed on the top of blackboard, and when putting down and pack up projection screen, need switch be pressed, when particularly packing up projection screen, need after people waits for that projection screen is kept well, again press switch, disconnect motor, rotating shaft just quits work, and projection screen just packs up end, as nobody presses switch, projection screen very easily destroys because packing up for a long time; In teaching process, when running into unexpected power-off, projection screen cannot realize automatic retracted, occurs the phenomenon taking blackboard.
Summary of the invention
For above-mentioned situation, for overcoming the defect of prior art, the object of the utility model is just to provide a kind of English teaching projection screen, and when effectively solving projection screen because packing up destroyed and unexpected power-off for a long time, projection screen cannot realize the problem of automatic retracted.
Its scheme solved is, comprise projection screen, one end of described projection screen is fixedly connected with the first housing, be provided with the first rotating shaft in first housing, one end connecting handle of the first rotating shaft, the other end of projection screen is fixedly connected with the second housing, second rotating shaft is installed in the second housing, second rotating shaft connects the first motor, and the first motor and switch are electrically connected, and switch is connected with clip.
The utility model structure is simple, and when projection screen is packed up, press switch when rotating clip rotates, disconnect the first motor, the second rotating shaft also quits work, and projection screen is packed up action and stopped, and avoids projection screen and destroys because packing up for a long time; When unexpected power-off, projection screen can manually be packed up, and solves the problem taking blackboard.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is the first housing right view (enlarged drawing) of the present utility model.
Fig. 3 is the second housing right view (enlarged drawing) of the present utility model.
Fig. 4 is the second housing left view (enlarged drawing) of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Provided by Fig. 1 to Fig. 4, the utility model comprises projection screen 1, the lower end of described projection screen 1 is fixedly connected with the first housing 2, be provided with one end connecting handle 4 of the first rotating shaft 3, first rotating shaft 3 in first housing 2, the upper end of projection screen 1 is fixedly connected with the second housing 5, second rotating shaft 6 is installed in second housing 5, second rotating shaft 6 connects the first motor 7, first motor 7 and is electrically connected with switch 8, and switch 8 leading flank is provided with rotating clip 9.
The first described rotating shaft 3 is connected with projection screen 1, forms projection screen 1 and rotate through the first rotating shaft 3 and be wrapped in the structure in the first rotating shaft 3.
The first housing 2 is longer than in one end of the first described rotating shaft 3.
The second described rotating shaft 6 is connected with projection screen 1, forms projection screen 1 and rotate through the second rotating shaft 6 and be wrapped in the structure in the second rotating shaft 6.
The two ends of the second described rotating shaft 6 connect annulus 12 respectively, the upper end of annulus 12 linking springs 13, spring 13 lower end coupling hook 14.
Described clip 9 connects the second motor 11 through shaft machine 10, forms clip 9 device moving up and down, the second motor 11 link position sensor.
The utility model in use, comprise projection screen 1, one end of described projection screen 1 is fixedly connected with the first housing 2, first rotating shaft 3 is installed in first housing 2, one end connecting handle 4 of the first rotating shaft 3, the other end of projection screen 1 is fixedly connected with the second housing 5, second rotating shaft 6 is installed in second housing 5, second rotating shaft 6 connects the first motor 7, first motor 7 is electrically connected with switch 8, switch 8 is connected with clip 9, when projection screen 1 is packed up, position transducer induction projection screen 1 packs up arrived position, and the positional information of induction is sent to the second motor 11, second motor 11 works, clip 9 is opened, and clip the projection screen 1 spooled by the second rotating shaft 6, now, switch 8 is pressed by clip 9, first motor 7 disconnects, second rotating shaft 6 stops operating, projection screen 1 packs up end, projection screen 1 is packed up after end presses switch 8 no longer to need English teacher to wait for, projection screen 1 just stops packing up action.
During unexpected power-off, English teacher can rotate with handle 4 in hand rotation handle 4, first rotating shaft 2, and projection screen 1 rotates with the first rotating shaft 2, and be wound in the first rotating shaft 2, when projection screen 1 receives correct position, can be hung on hook 14, if do not reach position, can to leave behind spring 13, the projection screen 1 packed up is hung on hook 14, prevents projection screen 1 from declining, solve the problem that projection screen 1 takies blackboard.
The utility model structure is simple, and when projection screen is packed up, press switch when rotating clip rotates, disconnect the first motor, the second rotating shaft also quits work, and projection screen is packed up action and stopped, and avoids projection screen and destroys because packing up for a long time; When unexpected power-off, projection screen can manually be packed up, and solves the problem taking blackboard.
Claims (6)
1. an English teaching projection screen, comprise projection screen (1), it is characterized in that, the lower end of described projection screen (1) is fixedly connected with the first housing (2), first rotating shaft (3) is installed in the first housing (2), one end connecting handle (4) of the first rotating shaft (3), the upper end of projection screen (1) is fixedly connected with the second housing (5), second rotating shaft (6) is installed in the second housing (5), second rotating shaft (6) connects the first motor (7), first motor (7) and switch (8) are electrically connected, switch (8) leading flank is provided with rotating clip (9).
2. a kind of English teaching projection screen according to claim 1, it is characterized in that, described the first rotating shaft (3) is connected with projection screen (1), forms projection screen (1) and rotate through the first rotating shaft (3) and be wrapped in the structure in the first rotating shaft (3).
3. a kind of English teaching projection screen according to claim 2, is characterized in that, the first housing (2) is longer than in one end of described the first rotating shaft (3).
4. a kind of English teaching projection screen according to claim 1, it is characterized in that, described the second rotating shaft (6) is connected with projection screen (1), forms projection screen (1) and rotate through the second rotating shaft (6) and be wrapped in the structure in the second rotating shaft (6).
5. a kind of English teaching projection screen according to claim 4, it is characterized in that, the two ends of described the second rotating shaft (6) connect annulus (12) respectively, the upper end of annulus (12) linking springs (13), spring (13) lower end coupling hook (14).
6. a kind of English teaching projection screen according to claim 1, it is characterized in that, described clip (9) connects the second motor (11) through shaft machine (10), form clip (9) device moving up and down, the second motor (11) link position sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520018593.4U CN204360594U (en) | 2015-01-13 | 2015-01-13 | A kind of English teaching projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520018593.4U CN204360594U (en) | 2015-01-13 | 2015-01-13 | A kind of English teaching projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204360594U true CN204360594U (en) | 2015-05-27 |
Family
ID=53262050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520018593.4U Expired - Fee Related CN204360594U (en) | 2015-01-13 | 2015-01-13 | A kind of English teaching projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204360594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110572629A (en) * | 2019-10-08 | 2019-12-13 | 江苏舜合物联网科技有限公司 | Control method of curled hidden laser television all-in-one machine |
-
2015
- 2015-01-13 CN CN201520018593.4U patent/CN204360594U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110572629A (en) * | 2019-10-08 | 2019-12-13 | 江苏舜合物联网科技有限公司 | Control method of curled hidden laser television all-in-one machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150527 Termination date: 20160113 |