Wall-mounted projection screen

Abstract

The utility model discloses a wall-mounted projection screen, which comprises a mounting frame, a projection screen, a mounting box I, a mounting box II and a wind-up roller, the mounting box I is fixedly mounted on the outer wall of the top of the mounting box II, and the mounting box I is provided with a mounting cylinder, a rotating column, a wind-up roller, a coil spring, a matching rod I and an arc-shaped groove. The mounting barrel moves towards the two sides through cooperation of the arc-shaped groove and the first matching rod and is separated from cooperation with the winding roller, when the winding roller needs to be mounted, the rotating column rotates in a reset mode under the action of the torsion spring, then the mounting barrel can be reset, and the effect of convenient disassembly and assembly is achieved. According to the device, the wind-up roller can be quickly dismounted without redundant operation, meanwhile, the swing plate, the circular plate, the second matching rod and the scraper are arranged, the swing plate rotates along with the rotating plate, the circular plate rotates through matching with the second matching rod, the circular plate is separated from the projection curtain when the wind-up roller is dismounted, and the work efficiency is improved. When the wind-up roller is installed, the dust scraping device automatically resets to scrape dust on the projection curtain.

Description

Technical Field

[0001] The utility model relates to the technical field of projection screens, in particular to a wall-mounted projection screen. Background Art

[0002] With the development of the times, people's quality of life is gradually improving with the development of science and technology. The development of film and television is also rapid. People can watch and appreciate film and television works through the Internet. When playing film and television works, different devices can be selected for playback. Among them, the projection screen is a small space-occupying and convenient device, which is very popular among people.

[0003] After searching, the Chinese patent publication number CN218068558U discloses a wall-mounted projection screen that is easy to install, which includes a shell, a storage groove is provided at the bottom of the shell, an installation groove is provided in the shell, a first through hole is provided on the inner wall of one side of the installation groove, the first through hole is communicated with the storage groove, a first rotating shaft is rotatably installed in the first through hole, a roller is provided on the outer side of the first rotating shaft through a welding fixing sleeve, a curtain is connected to the outer side of the roller, and a limit rod is connected to the curtain.

[0004] The above patent has the following shortcomings: when the above device disassembles the curtain, the two pull rods are pulled away from each other, separated from the two second slots, and then the curtain is removed. However, this structure requires pulling the pull rods on both sides at the same time during operation to successfully remove the curtain, which is inconvenient. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a wall-mounted projection screen.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A wall-mounted projection screen comprises a mounting frame, a projection screen, a first mounting box, a second mounting box and a winding roller, wherein the first mounting box is fixedly mounted on the top outer wall of the second mounting box, the inner wall of the first mounting box is rotatably connected with a rotating column, the inner side wall of the second mounting box is slidably connected with a mounting cylinder, a matching rod is fixedly mounted on the top outer wall of the mounting cylinder, an arc groove is provided on the outer side wall of the rotating column, the arc groove matches with the matching rod, a matching ring is rotatably connected with the inner wall of the mounting cylinder, a winding spring is clamped between the matching ring and the inner wall of the mounting cylinder, a limiting rod is fixedly mounted on the outer side wall of the winding roller, the winding roller and the limiting rod are movably connected to the inner wall of the matching ring, and the projection screen is wrapped around the outer side wall of the winding roller.

[0008] As a further solution of the utility model: a turning handle is fixedly installed at one end of the rotating column, and a torsion spring is clamped between the turning handle and an outer side wall of the installation box.

[0009] As a further solution of the utility model: a fixing plate is fixedly installed on the second outer side wall of the installation box, and a mounting bolt is connected between the fixing plate and the inner wall of the installation frame through a thread.

[0010] As a further solution of the utility model: a bottom plate is fixedly installed on the outer wall at the bottom of the projection screen.

[0011] As a further solution of the utility model: a spring pin is fixedly installed on the outer side wall of the bottom plate, and the other end of the spring pin is movably connected to the mounting frame.

[0012] As a further solution of the utility model: a swing plate is fixedly installed on the outer side wall of the other end of the rotating column, and a circular plate is rotatably connected to the second outer side wall of the installation box.

[0013] As a further solution of the utility model: the outer side wall of the circular plate is rotatably connected with a second matching rod, the second matching rod is matched with the inner side wall of the swing plate, and a scraper is fixedly installed on the outer side wall of the circular plate on the opposite side.

[0014] Compared with the prior art, the utility model provides a wall-mounted projection screen, which has the following beneficial effects:

[0015] 1. The utility model is provided with a rotating column, a winding roller, a mounting cylinder, a winding spring, a matching rod and an arc groove. When in use, the rotating column can be rotated, and the mounting cylinder can be moved to both sides through the matching of the arc groove and the matching rod, so as to be separated from the matching of the winding roller, thereby achieving the effect of convenient disassembly and assembly.

[0016] 2. The utility model is provided with a swing plate, a circular plate, a second matching rod and a scraper. When in use, the swing plate rotates simultaneously with the rotating plate, and the circular plate rotates by matching with the second matching rod. When the winding roller is removed, the circular plate is separated from the projection screen, and when the winding roller is installed, the circular plate is automatically reset to scrape the dust off the projection screen.

[0017] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a wall-mounted projection screen proposed by the utility model;

[0019] Figure 2 This is a rear view structural schematic diagram of a wall-mounted projection screen proposed by the utility model;

[0020] Figure 3 This is a schematic cross-sectional structure diagram of an installation box 1 and an installation box 2 of a wall-mounted projection screen proposed by the utility model;

[0021] Figure 4This is a schematic diagram of the rotating column structure of a wall-mounted projection screen proposed by the utility model;

[0022] Figure 5 This is a schematic diagram of the exploded structure of the installation tube of a wall-mounted projection screen proposed by the utility model;

[0023] Figure 6 The utility model is a schematic diagram of the bottom plate structure of a wall-mounted projection screen.

[0024] In the figure: 1. mounting frame; 2. mounting bolt; 3. projection screen; 4. mounting box 1; 5. mounting box 2; 6. torsion spring; 7. turning handle; 8. matching rod 1; 9. mounting cylinder; 10. rotating column; 11. swing plate; 12. matching rod 2; 13. circular plate; 14. fixing plate; 15. scraper; 16. arc groove; 17. limiting rod; 18. winding roller; 19. matching ring; 20. coil spring; 21. spring pin; 22. bottom plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Embodiment 1:

[0028] A wall-mounted projection screen, in order to facilitate the removal of the projection screen 3, such as Figure 1-6As shown, it includes a mounting frame 1, a projection screen 3, a mounting box 1 4, a mounting box 2 5, and a winding roller 18. The mounting box 1 4 is welded to the top outer wall of the mounting box 2 5. The inner wall of the mounting box 1 4 is rotatably connected with a rotating column 10. The inner side wall of the mounting box 2 5 is slidably connected with a mounting cylinder 9. A matching rod 1 8 is welded to the top outer wall of the mounting cylinder 9. An arc groove 16 is provided on the outer side wall of the rotating column 10. The arc groove 16 matches with the matching rod 1 8. A turning handle 7 is welded to one end of the rotating column 10. A torsion spring 6 is clamped between the turning handle 7 and the outer side wall of the mounting box 4. A matching ring 19 is rotatably connected to the inner wall of the mounting cylinder 9. A coil spring 20 is clamped between the matching ring 19 and the inner wall of the mounting cylinder 9. A limiting rod 17 is welded to the outer side wall of the winding roller 18. The winding roller 18 and the limiting rod 17 are movably connected to the inner wall of the matching ring 19. The projection screen 3 is wound around the outer side wall of the winding roller 18.

[0029] When in use, when it is necessary to remove the winding roller 18 and the external mounting frame 1, the rotating column 10 is rotated by the turning handle 7 so that the arc groove 16 outside the rotating column 10 cooperates with the matching rod 8 to make the mounting tube 9 move to both sides, and then the winding roller 18 is separated from the mounting tube 9, so that the projection screen 3 can be quickly removed. When it is necessary to install the winding roller 18, the winding roller 18 is placed between the mounting tubes 9, and the turning handle 7 is released. The turning handle 7 drives the rotating column 10 to reverse under the torsion of the torsion spring 6, and the mounting tube 9 is reset under the cooperation of the arc groove 16 and the winding roller 18. The matching ring 19 inside the mounting tube 9 cooperates with the winding roller 18. At the same time, the matching ring 19 drives the winding roller 18 to rotate under the torsion of the winding spring 20 to wind up the projection screen 3. When the projection screen 3 needs to be used, the projection screen 3 can be directly pulled out.

[0030] The outer side wall of the installation box 2 5 is welded with a fixing plate 14, and the fixing plate 14 is connected to the inner wall of the installation frame 1 by a mounting bolt 2 through a thread, and the bottom outer wall of the projection screen 3 is bonded with a bottom plate 22;

[0031] When in use, the mounting frame 1 can be fixed to the outside of the wall, and the entire device can be quickly fixed to the outside of the mounting frame 1 through the mounting bolts 2. When the device is damaged, it is not necessary to perform construction operations on the wall multiple times, thereby reducing damage to the wall.

[0032] A spring pin 21 is welded to the outer side wall of the bottom plate 22, and the other end of the spring pin 21 is movably connected to the mounting frame 1;

[0033] The projection screen 3 is pulled through the bottom plate 22 and the other end of the spring pin 21 is inserted into the mounting frame 1 to achieve rapid fixing and use of the projection screen 3 .

[0034] Working principle: When in use, the mounting frame 1 can be fixed to the outside of the wall, and the entire device can be quickly fixed to the outside of the mounting frame 1 through the mounting bolt 2. The projection screen 3 is pulled through the bottom plate 22 and the other end of the spring pin 21 is inserted into the mounting frame 1 to realize the rapid fixation and use of the projection screen 3. When it is necessary to remove the winding roller 18 and the external mounting frame 1, the rotating column 10 is rotated through the turning handle 7 so that the arc groove 16 outside the rotating column 10 cooperates with the winding roller 18 to make the installation tube 9 move to both sides, and then the winding roller 18 is separated from the installation tube 9, so that the projection screen 3 can be quickly removed.

[0035] Embodiment 2:

[0036] A wall-mounted projection screen, such as Figure 1-6 As shown, in order to realize automatic scraping of the projection screen 3, this embodiment makes the following supplements on the basis of the embodiment 1: the outer side wall of the other end of the rotating column 10 is welded with a swing plate 11, the outer side wall of the second installation box 5 is rotatably connected with a circular plate 13, the outer side wall of the circular plate 13 is rotatably connected with a matching rod 2 12, the matching rod 2 12 is matched with the inner side wall of the swing plate 11, and the outer side wall of the circular plate 13 on the opposite side is bonded with a scraper 15;

[0037] Working principle: When the rotating column 10 is rotated to install or remove the winding roller 18, the swing plate 11 rotates accordingly, and the circular plate 13 is driven to rotate through the matching rod 12, and the scraper 15 on the outer wall of the circular plate 13 is separated from the contact with the projection screen 3. When the rotating column 10 is reset, the scraper 15 is also driven by the circular plate 13 to automatically reset and scrape the dust.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wall-mounted projection screen, comprising a mounting frame (1), a projection screen (3), a first mounting box (4), a second mounting box (5), and a winding roller (18), characterized in that: The installation box 1 (4) is fixedly installed on the top outer wall of the installation box 2 (5); the inner wall of the installation box 1 (4) is rotatably connected with a rotating column (10); the inner side wall of the installation box 2 (5) is slidably connected with a mounting tube (9); the top outer wall of the installation tube (9) is fixedly installed with a matching rod 1 (8); the outer side wall of the rotating column (10) is provided with an arc groove (16); the arc groove (16) matches with the matching rod 1 (8); the inner wall of the installation tube (9) is rotatably connected with a matching ring (19); a coil spring (20) is clamped between the matching ring (19) and the inner wall of the installation tube (9); a limiting rod (17) is fixedly installed on the outer side wall of the winding roller (18); the winding roller (18) and the limiting rod (17) are movably connected to the inner wall of the matching ring (19); the projection screen (3) is wound around the outer side wall of the winding roller (18).

2. A wall-mounted projection screen according to claim 1, characterized in that: A turning handle (7) is fixedly mounted on one end of the rotating column (10), and a torsion spring (6) is clamped between the turning handle (7) and the outer side wall of the installation box (4).

3. A wall-mounted projection screen according to claim 2, characterized in that: A fixing plate (14) is fixedly mounted on the outer side wall of the second installation box (5), and a mounting bolt (2) is connected between the fixing plate (14) and the inner wall of the installation frame (1) via a thread.

4. A wall-mounted projection screen according to claim 3, characterized in that: A bottom plate (22) is fixedly mounted on the outer wall of the bottom of the projection screen (3).

5. A wall-mounted projection screen according to claim 4, characterized in that: A spring pin (21) is fixedly mounted on the outer side wall of the bottom plate (22), and the other end of the spring pin (21) is movably connected to the mounting frame (1).

6. The wall-mounted projection screen according to claim 1, characterized in that: A swing plate (11) is fixedly mounted on the outer side wall of the other end of the rotating column (10), and a circular plate (13) is rotatably connected to the outer side wall of the second installation box (5).

7. A wall-mounted projection screen according to claim 6, characterized in that: The outer side wall of the circular plate (13) is rotatably connected to a second matching rod (12), and the second matching rod (12) matches the inner side wall of the swing plate (11). A scraper (15) is fixedly mounted on the outer side wall of the circular plate (13) on the opposite side.

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