CN205844733U - A kind of teaching projection screen - Google Patents
A kind of teaching projection screen Download PDFInfo
- Publication number
- CN205844733U CN205844733U CN201620759819.0U CN201620759819U CN205844733U CN 205844733 U CN205844733 U CN 205844733U CN 201620759819 U CN201620759819 U CN 201620759819U CN 205844733 U CN205844733 U CN 205844733U
- Authority
- CN
- China
- Prior art keywords
- projection screen
- electric expansion
- expansion bar
- fixing
- support frame
- 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)
- Transforming Electric Information Into Light Information (AREA)
Abstract
The utility model discloses a kind of teaching projection screen, including supporting base, the first electric expansion bar, the second electric expansion bar, support frame, connecting rod, projection screen, jointed shaft and roller, described support base is fixed with the first electric expansion bar；The expansion link end of described first electric expansion bar is fixing with the second electric expansion bar to be connected；The expansion link end of described second electric expansion bar is fixing with support frame to be connected；It is provided with projection screen in described support frame；Described projection screen is connected by connecting rod and support frame are fixing；Described support base lower end surrounding is provided with roller；Described roller is connected by jointed shaft is fixing with support base.This utility model provides the benefit that simple in construction, easy to use, and regulating effect is good and use is mobile convenient.
Description
Technical field
This utility model belongs to teaching equipment technical field, is specifically related to a kind of teaching projection screen.
Background technology
Current teaching projection screen, in-convenience in use, regulation trouble, wastes time and energy and moves use inconvenience.
Therefore, a kind of teaching projection screen of invention seems the most necessary.
Utility model content
The purpose of this utility model is to provide a kind of teaching projection screen, to solve to propose in above-mentioned background technology mesh
Front teaching projection screen, in-convenience in use, regulation trouble, wastes time and energy and moves awkward problem.
For achieving the above object, this utility model following technical scheme of offer: a kind of teaching projection screen, including supporting
Base, the first electric expansion bar, the second electric expansion bar, support frame, connecting rod, projection screen, jointed shaft and roller, described
Support and be fixed with the first electric expansion bar on base；The expansion link end of described first electric expansion bar and the second electric expansion bar
Fixing connection；The expansion link end of described second electric expansion bar is fixing with support frame to be connected；Arrange in described support frame
There is projection screen；Described projection screen is connected by connecting rod and support frame are fixing；Described support base lower end surrounding is arranged
There is roller；Described roller is connected by jointed shaft is fixing with support base.
Further, described first electric expansion bar is connected by bolt is fixing with support base.
Further, described connecting rod is provided with hinged buckle with the contact jaw of projection screen.
Technique effect of the present utility model and advantage: this teaching projection screen, by arrange the first electric expansion bar,
Two electric expansion bars can regulate projection screen height and range of extension, adapts to projector so that it is convenient to regulate, regulating effect
Good；By being provided with roller in support base lower end surrounding so that device, mobile easy to use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1 supports base, 2 first electric expansion bars, 3 second electric expansion bars, 4 support frames, 5 connecting rods, 6 throwings
Shadow screen, 7 jointed shafts, 8 rollers.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
This utility model provides a kind of teaching projection screen as shown in Fig. 1, and including supporting, base 1, first is electronic
Expansion link the 2, second electric expansion bar 3, support frame 4, connecting rod 5, projection screen 6, jointed shaft 7 and roller 8, at the bottom of described support
It is fixed with the first electric expansion bar 2 on seat 1；The expansion link end of described first electric expansion bar 2 is solid with the second electric expansion bar 3
Fixed connection；The expansion link end of described second electric expansion bar 3 is fixing with support frame 4 to be connected；Arrange in described support frame 4
There is projection screen 6；Described projection screen 6 is connected by connecting rod 5 is fixing with support frame 4；Described support base 1 lower end surrounding
It is provided with roller 8；Described roller 8 is connected by jointed shaft 7 is fixing with support base 1.
Further, described first electric expansion bar 2 is connected by bolt is fixing with support base 1.
Further, described connecting rod 5 is provided with hinged buckle with the contact jaw of projection screen 6.
Operation principle: this teaching projection screen is permissible by arranging first electric expansion bar the 2, second electric expansion bar 3
Regulation projection screen height and range of extension, adapt to projector so that it is convenient to regulate, and regulating effect is good；By supportting base 1 time
End surrounding is provided with roller 8 so that device, mobile easy to use.
Utilize technical scheme described in the utility model, or those skilled in the art's opening in technical solutions of the utility model
Give, design similar technical scheme, and reach above-mentioned technique effect, all fall into protection domain of the present utility model.
Claims (3)
1. a teaching projection screen, including support base (1), the first electric expansion bar (2), the second electric expansion bar (3),
Support frame (4), connecting rod (5), projection screen (6), jointed shaft (7) and roller (8), it is characterised in that: described support base
(1) the first electric expansion bar (2) it is fixed with on；The expansion link end of described first electric expansion bar (2) and the second electric expansion
Bar (3) is fixing to be connected；The expansion link end of described second electric expansion bar (3) is fixing with support frame (4) to be connected；Described support
Projection screen (6) it is provided with in framework (4)；Described projection screen (6) is connected by connecting rod (5) and support frame (4) are fixing；
Described support base (1) lower end surrounding is provided with roller (8)；Described roller (8) is solid with support base (1) by jointed shaft (7)
Fixed connection.
A kind of teaching projection screen the most according to claim 1, it is characterised in that: described first electric expansion bar (2)
It is connected by bolt and support base (1) are fixing.
A kind of teaching projection screen the most according to claim 1, it is characterised in that: described connecting rod (5) and projection screen
The contact jaw of curtain (6) is provided with hinged buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620759819.0U CN205844733U (en) | 2016-07-19 | 2016-07-19 | A kind of teaching projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620759819.0U CN205844733U (en) | 2016-07-19 | 2016-07-19 | A kind of teaching projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205844733U true CN205844733U (en) | 2016-12-28 |
Family
ID=57625315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620759819.0U Expired - Fee Related CN205844733U (en) | 2016-07-19 | 2016-07-19 | A kind of teaching projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205844733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172035A (en) * | 2018-02-02 | 2018-06-15 | 河南工学院 | A kind of computer teaching portable translucent screen |
-
2016
- 2016-07-19 CN CN201620759819.0U patent/CN205844733U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172035A (en) * | 2018-02-02 | 2018-06-15 | 河南工学院 | A kind of computer teaching portable translucent screen |
| CN108172035B (en) * | 2018-02-02 | 2020-02-21 | 河南工学院 | Portable projection screen is used in computer teaching |
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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: 20161228 Termination date: 20170719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |