CN204044492U - A kind of high stability multimedia teaching projection screen - Google Patents
A kind of high stability multimedia teaching projection screen Download PDFInfo
- Publication number
- CN204044492U CN204044492U CN201420429730.9U CN201420429730U CN204044492U CN 204044492 U CN204044492 U CN 204044492U CN 201420429730 U CN201420429730 U CN 201420429730U CN 204044492 U CN204044492 U CN 204044492U
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- China
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- spool
- installation shaft
- iron plate
- high stability
- magnet
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Abstract
The utility model discloses a kind of high stability multimedia teaching projection screen, it relates to Teaching Technology of Multimedia field, erecting frame is arranged on body of wall by screw, erecting frame is provided with spool enclosure, by bearing seat, spool is installed in spool enclosure, on spool, solderless wrapped connection has projection cloth, one end of spool is provided with drive motor by axle sleeve, the lower end of projection cloth is provided with installation shaft, the upper end of installation shaft is provided with connecting rod, the front end of connecting rod is provided with iron plate, iron plate and magnet attraction, and magnet is arranged on the downside of body of wall, the side of installation shaft is provided with electromagnetic expansion device by screw, the expansion link of electromagnetic expansion device is provided with rubber blanket, the utility model makes projection cloth can not rock in use, and easy and simple to handle, easy to use, structure is simple.
Description
Technical field:
The utility model relates to a kind of high stability multimedia teaching projection screen, belongs to Teaching Technology of Multimedia field.
Background technology:
Multimedia teaching refers in teaching process, according to the feature of instructional objective and teaching object, pass through Instructional Design, choose reasonable and utilization Modern Teaching Medium, and with Traditional teaching means organic assembling, jointly participate in whole course of teaching, with media information function in student, form rational teaching process structure, reach optimized teaching efficiency.
Have existed since ancient times in fact in multimedia teaching, and teacher is imparting knowledge to students by text, sound, picture always.But start to occur adopting multiple electronic medium as integrated use and classroom instructions such as magic lantern, projection, recording, video recordings in the eighties in 20th century, this instructional technology is also known as Multimedia Teaching or electronic teaching, the nineties rises, developing rapidly and popularizing along with computer technology, multimedia computer progressively instead of the comprehensive use status of Multiform Teaching Media in the past.Therefore, our usually said multimedia teaching now refers in particular to use multimedia computer and the instructional process carried out by means of the multimedia teaching software made in advance.It can be called computer-aided instruction again.
Existing multimedia teaching projection screen its poor stability in use, particularly can produce when teacher's pointer is encountered and rock, inconvenient during use.
Utility model content:
For the problems referred to above, the technical problems to be solved in the utility model is to provide a kind of high stability multimedia teaching projection screen.
A kind of high stability multimedia teaching projection screen of the present utility model, it comprises erecting frame, spool enclosure, projection cloth, magnet, iron plate, connecting rod, installation shaft, electromagnetic expansion device, rubber blanket; Erecting frame is arranged on body of wall by screw, erecting frame is provided with spool enclosure, by bearing seat, spool is installed in spool enclosure, on spool, solderless wrapped connection has projection cloth, one end of spool is provided with drive motor by axle sleeve, the lower end of projection cloth is provided with installation shaft, the upper end of installation shaft is provided with connecting rod, the front end of connecting rod is provided with iron plate, iron plate and magnet attraction, and magnet is arranged on the downside of body of wall, the side of installation shaft is provided with electromagnetic expansion device by screw, and the expansion link of electromagnetic expansion device is provided with rubber blanket.
As preferably, described rubber blanket is taper.
As preferably, the front end of described iron plate is provided with dividing plate.
The beneficial effects of the utility model are: projection cloth can not be rocked in use, and easy and simple to handle, easy to use, structure is simple.
Accompanying drawing illustrates:
For ease of illustrating, the utility model is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is structural representation of the present utility model;
In figure: 1-erecting frame; 2-spool enclosure; 3-projection cloth; 4-magnet; 5-iron plate; 6-connecting rod; 7-installation shaft; 8-electromagnetic expansion device; 9-rubber blanket.
Embodiment:
For making the purpose of this utility model, technical scheme and advantage clearly understand, below by the specific embodiment shown in accompanying drawing, the utility model is described.But should be appreciated that, these describe just exemplary, and do not really want to limit scope of the present utility model.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present utility model.
As shown in Figure 1, this embodiment by the following technical solutions: it comprises erecting frame 1, spool enclosure 2, projection cloth 3, magnet 4, iron plate 5, connecting rod 6, installation shaft 7, electromagnetic expansion device 8, rubber blanket 9; Erecting frame 1 is arranged on body of wall by screw, erecting frame 1 is provided with spool enclosure 2, by bearing seat, spool is installed in spool enclosure 2, on spool, solderless wrapped connection has projection cloth 3, one end of spool is provided with drive motor by axle sleeve, the lower end of projection cloth 3 is provided with installation shaft 7, the upper end of installation shaft 7 is provided with connecting rod 6, the front end of connecting rod 6 is provided with iron plate 5, iron plate 5 and magnet 4 adhesive, and magnet 4 is arranged on the downside of body of wall, the side of installation shaft 7 is provided with electromagnetic expansion device 8 by screw, the expansion link of electromagnetic expansion device 8 is provided with rubber blanket 9.
Further, described rubber blanket 9 is taper.
Further, the front end of described iron plate 5 is provided with dividing plate.
The principle of work of this embodiment is: drive motor drives spool to rotate, projection cloth 3 declines, when dropping to minimum, and now iron plate 5 meeting and the adhesive of magnet 4 phase, such projection cloth 3 there will not be the phenomenon of rocking in use, when projection cloth 3 packed up by needs, first start electromagnetic expansion device 8, the rubber blanket 9 of electromagnetic expansion device 8 front end bumps against the wall, magnet 4 and iron plate 5 are departed from, now projection cloth 3 rising is rolled, easy to use, easy and simple to handle.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a high stability multimedia teaching projection screen, is characterized in that: it comprises erecting frame (1), spool enclosure (2), projection cloth (3), magnet (4), iron plate (5), connecting rod (6), installation shaft (7), electromagnetic expansion device (8), rubber blanket (9), erecting frame (1) is arranged on body of wall by screw, erecting frame (1) is provided with spool enclosure (2), by bearing seat, spool is installed in spool enclosure (2), on spool, solderless wrapped connection has projection cloth (3), one end of spool is provided with drive motor by axle sleeve, the lower end of projection cloth (3) is provided with installation shaft (7), the upper end of installation shaft (7) is provided with connecting rod (6), the front end of connecting rod (6) is provided with iron plate (5), iron plate (5) and magnet (4) adhesive, and magnet (4) is arranged on the downside of body of wall, the side of installation shaft (7) is provided with electromagnetic expansion device (8) by screw, the expansion link of electromagnetic expansion device (8) is provided with rubber blanket (9).
2. a kind of high stability multimedia teaching projection screen according to claim 1, is characterized in that: described rubber blanket (9) is taper.
3. a kind of high stability multimedia teaching projection screen according to claim 1, is characterized in that: the front end of described iron plate (5) is provided with dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429730.9U CN204044492U (en) | 2014-07-30 | 2014-07-30 | A kind of high stability multimedia teaching projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420429730.9U CN204044492U (en) | 2014-07-30 | 2014-07-30 | A kind of high stability multimedia teaching projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204044492U true CN204044492U (en) | 2014-12-24 |
Family
ID=52245140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420429730.9U Expired - Fee Related CN204044492U (en) | 2014-07-30 | 2014-07-30 | A kind of high stability multimedia teaching projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204044492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112037587A (en) * | 2020-08-14 | 2020-12-04 | 深圳市木光科技有限公司 | Computer programming learning teaching aid |
-
2014
- 2014-07-30 CN CN201420429730.9U patent/CN204044492U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112037587A (en) * | 2020-08-14 | 2020-12-04 | 深圳市木光科技有限公司 | Computer programming learning teaching aid |
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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: 20141224 Termination date: 20150730 |
|
| EXPY | Termination of patent right or utility model |