CN207301608U - A kind of teaching projection screen - Google Patents
A kind of teaching projection screen Download PDFInfo
- Publication number
- CN207301608U CN207301608U CN201721063669.0U CN201721063669U CN207301608U CN 207301608 U CN207301608 U CN 207301608U CN 201721063669 U CN201721063669 U CN 201721063669U CN 207301608 U CN207301608 U CN 207301608U
- Authority
- CN
- China
- Prior art keywords
- projection screen
- groove
- curtain
- dustproof film
- storage box
- 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 discloses a kind of teaching projection screen, including projection screen recycling box and curtain, the inside of the projection screen recycling box is rotatablely connected by the 3rd shaft and curtain, the projection screen recycling box is rotatablely connected by first rotating shaft and dustproof film, the bottom of the curtain is provided with storage box, the inside of the storage box offers the 3rd groove, and the 3rd groove is internally provided with spring, and the spring is connected by fixture block with dustproof film.In the utility model, the inside of projection screen storage box is rotatablely connected by first rotating shaft and dustproof film, dustproof film is mutually close to curtain, one layer of dustproof film is set among curtain and the opposite side of blackboard, it can prevent pollution of the dusts such as chalk dust to curtain, certain dust-proof processing can be carried out to curtain, and dustproof film is detachable structure, periodically dustproof film can be replaced, ensure the clean degree of curtain.
Description
Technical field
It the utility model is related to projection screen technical field, more particularly to a kind of teaching projection screen.
Background technology
Projecting apparatus is a kind of equipment that can be projected to image or video on curtain, and curtain typically can be automatic
Lifting, projection screen is a kind of essential apparatus in college classroom instruction, and projection screen is used in college teaching classroom
Frequency be even greater than frequency using blackboard, the use to be further curtain brings the convenience of bigger, it is necessary to one kind
Exclusively for the projection screen of Instructional Design.
But existing teaching with projection screen using certain shortcoming is above still suffered from, in use, projection screen
Dust-proof effect it is bad, cause curtain dust fall, especially chalk dust and influence the quality of viewing, and the electric wire of electric projecting curtain
Not possessing the function of folding and unfolding, wire-excessive can influence beauty, and teaching classroom needs to use teacher's pointer, and teacher's pointer is not provided with placement location,
It is easy to cause the loss of teacher's pointer.
Utility model content
The purpose of this utility model is to solve shortcoming existing in the prior art, and a kind of teaching proposed projects
Curtain.
To achieve these goals, the utility model employs following technical solution：A kind of teaching projection screen, including
Projection screen recycling box and curtain, the inside of the projection screen recycling box is rotatablely connected by the 3rd shaft and curtain, described
Projection screen recycling box is rotatablely connected by first rotating shaft and dustproof film, and the bottom of the curtain is provided with storage box, institute
The inside for stating storage box offers the 3rd groove, and the 3rd groove is internally provided with spring, the spring by fixture block with
Dustproof film connects, and offers the first groove on the outside of the storage box, the outside of the storage box is located in the first groove
Being connected through the hinge at heart position has fixing card, and the side of the projection screen storage box is fixed with spooler base, the receipts
The center position of line device base is rotatablely connected by the second shaft and hand cranking handle, and the outside of the spooler base is equidistantly opened
Equipped with multiple second grooves, second groove is connected by convex block with spooler lid, and the spooler, which covers, offers circle
Through hole.
As further describing for above-mentioned technical proposal：
The convex block can just fasten with the second groove.
As further describing for above-mentioned technical proposal：
It is provided with semicircle convex block on the outside of the fixture block, the inside of the 3rd groove opens up fluted, and semicircle convex block
Outside diameter and groove internal diameter it is equal in magnitude.
As further describing for above-mentioned technical proposal：
The dustproof film is detachable structure.
As further describing for above-mentioned technical proposal：
The vertical center line of first groove is located on same vertical curve with the vertical center line of projection screen storage box.
In the utility model, first, the inside of projection screen storage box is rotatablely connected by first rotating shaft and dustproof film,
Dustproof film is mutually close to curtain, sets one layer of dustproof film among curtain and the opposite side of blackboard, can prevent chalk dust
Deng pollution of the dust to curtain, certain dust-proof processing can be carried out to curtain, and dustproof film is detachable structure, can be periodically right
Dustproof film is replaced, and ensures the clean degree of curtain, and secondly, the side of projection screen storage box is provided with spooler, installation
During electric wire unnecessary in device can be stored, avoid the mixed and disorderly placement of electric wire, ensure overall aesthetics, finally,
Open up fluted on the outside of storage box, and the volume of groove can ensure the placement of teacher's pointer, available for the storage of teacher's pointer, avoid arbitrarily
Placing teacher's pointer causes the loss of teacher's pointer.
Brief description of the drawings
Fig. 1 be the utility model proposes a kind of teaching projection screen structure diagram；
Fig. 2 be the utility model proposes a kind of teaching projection screen spooler structure diagram；
Fig. 3 be the utility model proposes a kind of teaching projection screen spooler dustproof film structural representation
Figure.
Marginal data：
1- projection screens recycling box, 2- spoolers lid, 3- hand cranking handles, 4- circular through holes, 5- first rotating shafts, 6- are dust-proof
Film, 7- curtains, 8- storage boxes, the first grooves of 9-, 10- fixing cards, 11- spoolers base, the second grooves of 12-, second turn of 13-
Axis, 14- convex blocks, the 3rd shafts of 15-, the 3rd grooves of 16-, 17- springs, 18- fixture blocks.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
With reference to Fig. 1-3, a kind of teaching projection screen, including projection screen recycling box 1 and curtain 7, projection screen recycling
The inside of box 1 is rotatablely connected by the 3rd shaft 15 with curtain 7, projection screen recycling box 1 by first rotating shaft 5 with it is dust-proof thin
Film 6 is rotatablely connected, and the bottom of curtain 7 is provided with storage box 8, and the inside of storage box 8 offers the 3rd groove 16, the 3rd groove
16 are internally provided with spring 17, and spring 17 is connected by fixture block 18 with dustproof film 6, the outside of storage box 8 offers first
Groove 9, the center position that the outside of storage box 8 is located at the first groove 9 are connected through the hinge and have fixing card 10, projection screen
The side of storage box 8 is fixed with spooler base 11, the center position of spooler base 11 by the second shaft 13 with it is hand
Handle 3 is rotatablely connected, and the outside of spooler base 11 equidistantly offers multiple second grooves 12, and the second groove 12 passes through convex block 14
It is connected with spooler lid 2, circular through hole 4 is offered on spooler lid 2.
Convex block 14 can just fasten with the second groove 12, and the outside of fixture block 18 is provided with semicircle convex block, the 3rd groove
16 inside opens up fluted, and the outside diameter of semicircle convex block and the internal diameter of groove are equal in magnitude, and dustproof film 6 is detachable knot
Structure, the vertical center line of the first groove 9 are located on same vertical curve with the vertical center line of projection screen storage box 8.
Dustproof film 6 is detachable structure, and periodically dustproof film 6 can be replaced, and ensures the clean degree of curtain 7.
Operation principle：In use, pressing switch, 5 and second shaft 13 of first rotating shaft rotates at the same time, curtain 7 and dust-proof thin
Film 6 declines at the same time, and fixture block 18 is put into storage box 8, inwardly promotes fixture block 18, and fixture block 18 inwardly extrudes spring 17, fixture block 18
The groove that the semicircle convex block of upper setting and the inside of the 3rd groove 16 open up fastens so that dustproof film 6 is fixed on storage
In box 8, unnecessary electric wire is around in the second shaft 13, spooler lid 2 is run through in one end of electric wire by circular through hole 4, passes through
Hand cranking handle 3 is shaken, electric wire can be stored, teacher's pointer is positioned in the 3rd groove 16, be consolidated teacher's pointer using fixing card 10
It is fixed, prevent teacher's pointer from losing.
The above, is only the preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality
New technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (5)
1. a kind of teaching projection screen, including projection screen recycling box (1) and curtain (7), it is characterised in that the projection screen
The inside of cloth recycling box (1) is rotatablely connected by the 3rd shaft (15) and curtain (7), and the projection screen recycling box (1) is led to
Cross first rotating shaft (5) to be rotatablely connected with dustproof film (6), the bottom of the curtain (7) is provided with storage box (8), the storage
The inside of box (8) offers the 3rd groove (16), and the 3rd groove (16) is internally provided with spring (17), the spring
(17) it is connected by fixture block (18) with dustproof film (6), the first groove (9), the receipts is offered on the outside of the storage box (8)
The center position that the outside of case (8) is located at the first groove (9) is connected through the hinge and has fixing card (10), the projection screen
The side of storage box (8) is fixed with spooler base (11), and the center position of the spooler base (11) passes through second turn
Axis (13) is rotatablely connected with hand cranking handle (3), and the outside of the spooler base (11) equidistantly offers multiple second grooves
(12), second groove (12) is connected by convex block (14) with spooler lid (2), and circle is offered on the spooler lid (2)
Shape through hole (4).
2. one kind teaching projection screen according to claim 1, it is characterised in that the convex block (14) can be just with the
Two grooves (12) fasten.
3. one kind teaching projection screen according to claim 1, it is characterised in that the outside of the fixture block (18) is set
There is a semicircle convex block, the inside of the 3rd groove (16) opens up fluted, and the semicircle outside diameter of convex block and the internal diameter size of groove
It is equal.
4. one kind teaching projection screen according to claim 1, it is characterised in that the dustproof film (6) is removable
Unload structure.
5. one kind teaching projection screen according to claim 1, it is characterised in that first groove (9) it is vertical
The vertical center line of center line and projection screen storage box (8) is located on same vertical curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721063669.0U CN207301608U (en) | 2017-08-24 | 2017-08-24 | A kind of teaching projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721063669.0U CN207301608U (en) | 2017-08-24 | 2017-08-24 | A kind of teaching projection screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207301608U true CN207301608U (en) | 2018-05-01 |
Family
ID=62438652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721063669.0U Expired - Fee Related CN207301608U (en) | 2017-08-24 | 2017-08-24 | A kind of teaching projection screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207301608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188845A (en) * | 2018-09-11 | 2019-01-11 | 安徽国耀通信科技有限公司 | A kind of film protection projection screen |
-
2017
- 2017-08-24 CN CN201721063669.0U patent/CN207301608U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188845A (en) * | 2018-09-11 | 2019-01-11 | 安徽国耀通信科技有限公司 | A kind of film protection projection screen |
| CN109188845B (en) * | 2018-09-11 | 2020-12-08 | 安徽国耀通信科技有限公司 | Film protection projection curtain |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 Termination date: 20180824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |