CN211403109U - Projection curtain cloth leveling device - Google Patents
Projection curtain cloth leveling device Download PDFInfo
- Publication number
- CN211403109U CN211403109U CN202020064484.7U CN202020064484U CN211403109U CN 211403109 U CN211403109 U CN 211403109U CN 202020064484 U CN202020064484 U CN 202020064484U CN 211403109 U CN211403109 U CN 211403109U
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- projection curtain
- projection
- fixedly connected
- rod
- spring
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Abstract
The utility model discloses a projection curtain device of flare-outing belongs to teaching equipment technical field, including projection curtain receiver, the connector has been seted up in the front of projection curtain receiver, it has the projection curtain main part to alternate in the connector, one side winding of projection curtain main part is connected on the surface that is located the inside curtain spool of projection curtain receiver, the upper surface and the lower surface of projection curtain main part respectively with two smooth opposite face overlap joints that fill up, and two smooth the equal fixedly connected with balance plate of one side that the pad kept away from mutually. The utility model discloses in, through pacifying mutually supporting between pad, balance plate, resilient means, magnetic sheet, second spring, slide bar, sliding sleeve, grab handle and the connecting hole, can play the purpose of leveling, the effect of flattening and removing dust to the surface of projection curtain main part, alright guarantee the roughness of projection curtain to a certain extent to just can guarantee the projection effect of projection curtain main part.
Description
Technical Field
The utility model belongs to the technical field of the teaching equipment, especially, relate to a projection curtain cloth leveling device.
Background
Projection screens are tools used in movies, offices, home theaters, large conferences, etc. to display images and video files. And can be divided into various sizes. The selection of different space projection screens is different, for example, a wide viewing angle and a low gain screen are suitable for the occasions with more people to watch or the occasions to watch transversely, a narrow viewing angle and a high gain screen are selected for watching in a narrow and long space, and a screen with proper gain is selected at the same time, so that the contrast of the screen is improved, the gray level of an image is increased, the color is bright, and the observability of the image is increased.
The structure of the projection screen is as follows: including the projection curtain receiver, movable support has rotatable curtain spool in the projection curtain receiver, the topside of projection curtain is connected with the curtain spool, the base of projection curtain activity downwards stretches out the projection curtain receiver and upwards rolls into the reel, the counter weight pull rod has been inserted in the reel, however, current for teaching projection curtain is hung before the blackboard usually, because the inside personnel intensity in classroom is higher, need often open the window and ventilate, cause the projection curtain to take place to rock easily, rock and can cause the damage to the projection curtain if being blown for a long time about, influence the roughness of projection curtain, and the surface of projection curtain adsorbs a large amount of dust easily, and then can reduce the projection effect of projection curtain, consequently need a projection curtain leveling device to solve above-mentioned problem urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve present teaching and use projection curtain usually to be hung before the blackboard, because the inside personnel concentration in classroom is higher, need often open the window and ventilate, cause the projection curtain to take place to rock easily, rock and can cause the damage to the projection curtain if being blown about for a long time, influence the roughness of projection curtain, and the surface of projection curtain adsorbs a large amount of dusts easily, and then can reduce the problem of projection curtain projection effect, and the projection curtain device of leveling that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a projection curtain leveling device comprises a projection curtain storage box, wherein a connector is formed in the front of the projection curtain storage box, a projection curtain main body is inserted into the connector, one side of the projection curtain main body is wound and connected to the surface of a curtain scroll in the projection curtain storage box, the upper surface and the lower surface of the projection curtain main body are respectively lapped with the opposite surfaces of two leveling pads, the surface, far away from the two leveling pads, of the two leveling pads is fixedly connected with a balance plate, the side, far away from the two balance plates, of the two balance plates is fixedly connected with the top and the bottom of the inner side of the connector through two elastic devices, the other side of the projection curtain main body is wound and connected with a balance weight pull rod, the bottom of the balance weight pull rod is provided with a groove, a support plate is fixedly connected to the inner part of the groove, a sliding sleeve is clamped on the surface of the support plate, one end fixedly connected with magnetic sheet of slide bar to the opposite face of magnetic sheet and backup pad passes through second spring fixed connection, and the second spring cup joints the surface at the slide bar.
As a further description of the above technical solution:
the elastic device comprises a telescopic rod and a first spring sleeved on the surface of the telescopic rod, one end of the telescopic rod and one end of the first spring are fixedly connected to the surface of the balance plate, and the other end of the telescopic rod and the other end of the first spring are fixedly connected to the inner side face of the connector.
As a further description of the above technical solution:
the bottom of the counterweight pull rod is provided with a connecting hole corresponding to the position of the magnetic plate, and the end of the counterweight pull rod is fixedly connected with a sealing plate corresponding to the position of the groove.
As a further description of the above technical solution:
the top end of the sliding rod is fixedly connected with a grab handle, and the surface of the grab handle is sleeved with an anti-slip sleeve.
As a further description of the above technical solution:
the top of the balance weight pull rod is provided with a limiting hole, the slide rod is positioned in the limiting hole, the cross sections of the slide rod and the slide sleeve are both rectangular structures, and the outer diameter of the slide rod is matched with the inner diameter of the slide sleeve.
As a further description of the above technical solution:
the bottom of the counterweight pull rod is of a plane structure.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses in, through pacifying mutually supporting between pad, balance plate, resilient means, magnetic sheet, second spring, slide bar, sliding sleeve, grab handle and the connecting hole, can play the purpose of leveling, the effect of flattening and removing dust to the surface of projection curtain main part, alright guarantee the roughness of projection curtain to a certain extent to just can guarantee the projection effect of projection curtain main part.
2. The utility model discloses in, through setting up the second spring, the pulling grab handle makes the slide bar slide in the sliding sleeve, the magnetic sheet breaks away from the blackboard, the second spring action that resets, therefore alright take in the inside of recess with the magnetic sheet, alright guarantee the smoothness degree of projection curtain main part when being taken in projection curtain receiver, through setting up sliding sleeve and slide bar, the cross sectional shape of sliding sleeve and slide bar is the rectangle structure, alright prevent that the slide bar from taking place to rotate at the gliding in-process of sliding sleeve, alright guarantee the stability of magnetic sheet at the intra-connector slip in-process, through setting up resilient means and balance plate, under the cooperation of balance plate and telescopic link, therefore alright improve the equilibrium of first spring to pacifying the cushion elasticity of applying.
Drawings
Fig. 1 is a schematic cross-sectional view of a front view of a projection screen cloth leveling device provided by the present invention;
fig. 2 is an enlarged schematic structural view of a projection screen cloth leveling device a of the present invention;
fig. 3 is a schematic structural view of a projection screen cloth leveling device in a top view;
fig. 4 is a schematic view of a left side view of a counterweight pull rod of a projection screen cloth leveling device according to the present invention.
Illustration of the drawings:
1. a projection curtain storage box; 2. a connecting port; 3. a projection curtain main body; 4. flattening the pad; 5. a balance plate; 6. an elastic device; 61. a telescopic rod; 62. a first spring; 7. a counterweight pull rod; 8. a groove; 9. a support plate; 10. a sliding sleeve; 11. a slide bar; 12. a magnetic plate; 13. a second spring; 14. connecting holes; 15. a limiting hole; 16. a handle; 17. a sealing plate; 18. an anti-slip sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a projection curtain flattening device comprises a projection curtain storage box 1, wherein a connector 2 is arranged on the front surface of the projection curtain storage box 1, a projection curtain main body 3 is inserted into the connector 2, one side of the projection curtain main body 3 is wound and connected on the surface of a curtain scroll positioned in the projection curtain storage box 1, the upper surface and the lower surface of the projection curtain main body 3 are respectively lapped with the opposite surfaces of two flattening pads 4, a balance plate 5 is fixedly connected with one surface, far away from the two flattening pads 4, by arranging the flattening pads 4, the balance plate 5 and an elastic device 6, a certain back friction force exists between the projection curtain main body 3 and the flattening pads 4 in the transmission process, so that a certain flattening effect can be achieved, in the process, under the supporting effect of a first spring 62 elasticity and a telescopic rod 61 in the elastic device 6, the back friction force between the flattening pads 4 and the projection curtain main body 3 is ensured, the surface of the projection curtain main body 3 can be flattened and dedusted, one side surface of the two flattening pads 4 far away is fixedly connected with the top and the bottom of the inner side of the connecting port 2 through two elastic devices 6 respectively, the balance plate 5 is matched with the telescopic rod 61 through the elastic devices 6 and the balance plate 5, so that the balance of the elasticity applied to the flattening pads 4 by the first spring 62 can be improved, the other side of the projection curtain main body 3 is wound and connected with the balance weight pull rod 7, the bottom of the balance weight pull rod 7 is provided with the groove 8, the inner part of the groove 8 is fixedly connected with the supporting plate 9, the surface of the supporting plate 9 is clamped with the sliding sleeve 10, the cross section shapes of the sliding sleeve 10 and the sliding rod 11 are both rectangular structures through the arrangement of the sliding sleeve 10 and the sliding rod 11, the sliding of the sliding rod 11 in the sliding process of the sliding sleeve 10 can be prevented from rotating, and the stability of the magnetic plate 12, a sliding rod 11 is connected in the sliding sleeve 10 in a sliding way, one end of the sliding rod 11 is fixedly connected with a magnetic plate 12, by arranging the magnetic plate 12, when the projection curtain main body 3 bears an image, the grab handle 16 is pressed, the magnetic plate 12 can be pushed to approach the blackboard through the sliding rod 11, because the material selected by the blackboard can be generally attracted by magnetic substances, the projection curtain main body 3 can be fixed through the counterweight pull rod 7, so that the projection curtain main body 3 can not easily shake under the influence of wind power, in addition, the opposite surfaces of the magnetic plate 12 and the supporting plate 9 are fixedly connected through a second spring 13, by arranging the second spring 13, the grab handle 16 is pulled to lead the sliding rod 11 to slide in the sliding sleeve 10, the magnetic plate 12 is separated from the blackboard, the second spring 13 carries out resetting action, so that the magnetic plate 12 can be taken in the groove 8, and the smoothness of the projection curtain main body 3 when the projection curtain storage box 1 is taken in can be, and a second spring 13 is sleeved on the surface of the slide bar 11.
Specifically, as shown in fig. 2, the elastic device 6 includes an expansion link 61 and a first spring 62 sleeved on the surface of the expansion link 61, one end of the expansion link 61 and one end of the first spring 62 are both fixedly connected to the surface of the balance plate 5, and the other end of the expansion link 61 and the other end of the first spring 62 are both fixedly connected to the inner side surface of the connection port 2.
Specifically, as shown in fig. 4, a connecting hole 14 is formed at the bottom of the counterweight pull rod 7 corresponding to the magnetic plate 12, and a sealing plate 17 is fixedly connected to the end of the counterweight pull rod 7 corresponding to the groove 8.
Specifically, as shown in fig. 4, a handle 16 is fixedly connected to the top end of the sliding rod 11, and an anti-slip sleeve 18 is sleeved on the surface of the handle 16.
Specifically, as shown in fig. 4, a limiting hole 15 is formed at the top of the counterweight pull rod 7, the sliding rod 11 is located in the limiting hole 15, the cross-sectional shapes of the sliding rod 11 and the sliding sleeve 10 are both rectangular structures, and the outer diameter of the sliding rod 11 is matched with the inner diameter of the sliding sleeve 10.
Specifically, as shown in fig. 3, the bottom of the counterweight stay 7 has a planar structure.
The working principle is as follows: when in use, the projection curtain main body 3 is driven in the connecting port 2, and is pulled by the curtain scroll or the balance weight pull rod 7, so that a certain reverse friction force exists between the projection curtain main body 3 and the flattening pad 4, and a certain flattening effect can be achieved, in the process, under the elastic force of the first spring 62 in the elastic device 6 and the supporting effect of the telescopic rod 61, the reverse friction force between the flattening pad 4 and the projection curtain main body 3 is ensured, meanwhile, the surface of the projection curtain main body 3 can be flattened and the dust can be removed, when the projection curtain main body 3 bears an image, the grab handle 16 is pressed, the magnetic plate 12 can be pushed to approach the blackboard through the slide rod 11, because the material selected by the blackboard can be generally attracted by the magnetic substance, the projection curtain main body 3 can be fixed through the balance weight pull rod 7, so that the projection curtain main body 3 can not easily shake under the influence of wind power, therefore alright guarantee the roughness of projection curtain to a certain extent to just can guarantee the projection effect of projection curtain main part 3, pulling grab handle 16 makes slide bar 11 slide in sliding sleeve 10, and magnetic sheet 12 breaks away from the blackboard, and second spring 13 resets the action, therefore alright take in magnetic sheet 12 to the inside of recess 8, alright guarantee the smoothness degree of projection curtain main part 3 when being taken in projection curtain receiver 1.
Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.
Claims (6)
1. A projection curtain leveling device comprises a projection curtain storage box (1) and is characterized in that a connector (2) is arranged on the front side of the projection curtain storage box (1), projection curtain main bodies (3) are inserted into the connector (2), one side of each projection curtain main body (3) is wound and connected on the surface of a curtain scroll in the projection curtain storage box (1), the upper surface and the lower surface of each projection curtain main body (3) are respectively overlapped with the opposite surfaces of two leveling pads (4), one side, far away from the two leveling pads (4), of each leveling pad is fixedly connected with a balance plate (5), one side, far away from the two balance plates (5), of each balance plate is fixedly connected with the top and the bottom of the inner side of the corresponding leveling pad (2) through two elastic devices (6), the other side of each projection curtain main body (3) is wound and connected with a balance weight pull rod (7), the bottom of counter weight pull rod (7) is seted up fluted (8), inside fixedly connected with backup pad (9) of recess (8), the surperficial joint of backup pad (9) has sliding sleeve (10), sliding sleeve (10) sliding connection has slide bar (11), the one end fixedly connected with magnetic sheet (12) of slide bar (11) to magnetic sheet (12) pass through second spring (13) fixed connection with the opposite face of backup pad (9), and cup joint on the surface of slide bar (11) second spring (13).
2. The projection screen cloth leveling device according to claim 1, wherein the elastic device (6) comprises a telescopic rod (61) and a first spring (62) sleeved on the surface of the telescopic rod (61), one end of the telescopic rod (61) and one end of the first spring (62) are both fixedly connected to the surface of the balance plate (5), and the other end of the telescopic rod (61) and the other end of the first spring (62) are both fixedly connected to the inner side surface of the connecting port (2).
3. The projection screen cloth leveling device according to claim 1, wherein a connecting hole (14) is formed at the bottom of the counterweight pull rod (7) corresponding to the position of the magnetic plate (12), and a sealing plate (17) is fixedly connected to the end of the counterweight pull rod (7) corresponding to the position of the groove (8).
4. The projection screen cloth leveling device according to claim 1, wherein a handle (16) is fixedly connected to the top end of the sliding rod (11), and an anti-slip sleeve (18) is sleeved on the surface of the handle (16).
5. The projection screen cloth leveling device according to claim 1, wherein a limiting hole (15) is formed in the top of the counterweight pull rod (7), the slide rod (11) is located in the limiting hole (15), the cross-sectional shapes of the slide rod (11) and the slide sleeve (10) are both rectangular structures, and the outer diameter of the slide rod (11) is matched with the inner diameter of the slide sleeve (10).
6. The projection screen cloth leveling device according to claim 1, wherein the bottom of the counterweight pull rod (7) is of a planar structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020064484.7U CN211403109U (en) | 2020-01-13 | 2020-01-13 | Projection curtain cloth leveling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020064484.7U CN211403109U (en) | 2020-01-13 | 2020-01-13 | Projection curtain cloth leveling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211403109U true CN211403109U (en) | 2020-09-01 |
Family
ID=72214896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020064484.7U Expired - Fee Related CN211403109U (en) | 2020-01-13 | 2020-01-13 | Projection curtain cloth leveling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211403109U (en) |
-
2020
- 2020-01-13 CN CN202020064484.7U patent/CN211403109U/en not_active Expired - Fee Related
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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: 20200901 Termination date: 20220113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |