Tensioning device for keeping curtain unfolded for long time

Abstract

The utility model belongs to the technical field of curtain tensioning devices, and particularly relates to a tensioning device for keeping a curtain unfolded for a long time, which comprises a bottom plate and a bottom cover. A storage pipe is arranged between the bottom plate and the bottom cover; the top of the storage pipe is fixedly connected with a threaded ring. The top of the threaded ring is in threaded connection with a telescopic rod; the top of the threaded ring is fixedly connected with a first protection pipe. The top of the telescopic rod is in threaded connection with an anti-skid nut. The bottom of the anti-skid nut is fixedly connected with a second protection pipe. The top of the telescopic rod is fixedly connected with an extension rod; the top of the anti-skid nut is in contact with a limiting pipe; the top of the extension rod is fixedly connected with a limiting block; the top of the limiting pipe is fixedly connected with an extrusion rod, and the top of the extrusion rod makes contact with the bottom of the bottom cover. According to the utility model, the function of manually adjusting the tension degree of the display screen is realized, the tension degree of the display screen can be reasonably controlled and timely adjusted, and the tension state of the display screen can be kept for a long time.

Description

Technical Field

[0001] The utility model belongs to the technical field of curtain tensioning devices, in particular to a tensioning device for keeping a curtain stretched for a long time. Background Art

[0002] A screen is a device used in conjunction with a projector to receive the projected image. In many outdoor settings, screens and projectors are used for film and television promotional presentations. The flatness of the screen's surface significantly impacts the presentation quality; the flatter the surface, the better the presentation.

[0003] When a curtain is used, it is stretched vertically in front of the user. A pull rod, slightly longer than the width of the curtain, is located at the lower edge of the curtain. The pull rod uses its own weight to tighten the curtain, keeping the surface flat. However, this method of tightening the curtain using the pull rod's own weight is more susceptible to external factors such as strong winds and accidental touches.

[0004] To this end, the utility model provides a tensioning device for keeping the curtain stretched for a long time. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: the tensioning device for keeping the curtain unfolded for a long time described in the present invention comprises a top cover; the bottom of the top cover is fixedly connected to the bottom cover; the side wall of the bottom cover is rotatably connected to a fixing rod; the end of the fixing rod is fixedly connected to a remote control motor; the bottom of the fixing rod is fixedly connected to a display screen; the bottom of the display screen is fixedly connected to a bottom plate; a storage tube is provided between the bottom plate and the bottom cover; the top of the storage tube is fixedly connected to a threaded ring; the top of the threaded ring is threadedly connected to a telescopic rod; the top of the telescopic rod is threadedly connected to an anti-slip nut; the bottom of the anti-slip nut is fixedly connected to a second Protective tube; the top of the telescopic rod is fixedly connected with an extension rod; the top of the anti-slip nut contacts the limit tube; the top of the extension rod is fixedly connected with a limit block; the top of the limit tube is fixedly connected with an extrusion rod, and the top of the extrusion rod contacts the bottom of the bottom cover; this step realizes the tensioning of the display screen by arranging the telescopic rod, the extrusion rod, the anti-slip nut and the limit tube, prevents the structure from separating by the extension rod and the limit block, protects the thread by the first protective tube and the second protective tube, realizes the function of manually adjusting the tensioning degree of the display screen, is conducive to reasonable control and timely adjustment of the tensioning degree of the display screen, and helps the display screen to maintain a tensioned state for a long time.

[0007] Preferably, a second rotating block is fixedly connected to the bottom of the storage tube; the end of the second rotating block is rotatably connected to a connecting rod; the bottom of the connecting rod is fixedly connected to a first rotating block; the first rotating block is rotatably connected to the inside of the bottom plate; this step allows the storage tube and its connected structure to change position by setting a connecting rod, avoiding the storage tube from affecting the storage of the display screen, while providing convenience for the storage of the storage tube itself, which is beneficial to reducing the volume of the device and reducing transportation pressure.

[0008] Preferably, a groove is provided at the bottom of the bottom cover, and a spring is fixed to the bottom surface of the groove; a fixing block is fixed to the bottom of the spring; this step fixes the top of the extrusion rod by providing the spring and the fixing block, thereby avoiding the scenario where the contact surface between the extrusion rod and the bottom cover slips or separates, which is beneficial to improving the stability of the device and providing a guarantee for long-term tensioning of the display screen.

[0009] Preferably, a protrusion is fixed to the bottom of the base plate; a fixing hook is fixed to the side wall of the protrusion; a column is fixed to the side wall of the bottom cover; a column groove is opened on the side wall of the column, and the column groove corresponds to the size of the fixing hook; this step fixes the bottom of the display screen by arranging the protrusion and the fixing hook, preventing the bottom of the display screen from being lifted up by external factors such as strong wind, which is conducive to enhancing the stability of the display screen.

[0010] Preferably, a screen brush is fixedly connected to the bottom of the bottom cover, and the side wall of the screen brush is in contact with the display screen; a boss is fixedly connected to the bottom of the bottom cover; in this step, the surface of the display screen is cleaned by providing the boss and the screen brush, thereby preventing dust from accumulating on the display screen after it is unfolded for a long time, which is beneficial to maintaining the cleanliness of the display screen surface and the display quality.

[0011] Preferably, a storage tray is fixedly connected to the side wall of the fixing rod, and a plurality of storage trays are arranged in a linear array. This step is beneficial to increasing the torque of the fixing rod by arranging a plurality of storage trays to store the display screen, thereby avoiding the situation where the remote control motor cannot drive the fixing rod to store the display screen after long-term use.

[0012] Preferably, a fixing ring is fixed to the side of the bottom cover, and the fixing rod is rotatably connected to the fixing ring; this step reduces internal friction by arranging fixing rings on both sides of the bottom cover, which is conducive to extending the service life of the device.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model discloses a tensioning device for maintaining a screen stretched for a long time. The device achieves tensioning of the display screen by providing a telescopic rod, an extrusion rod, an anti-slip nut, and a limit tube. The extension rod and the limit block prevent the structure from separating. The first and second protective tubes protect the threads. The device realizes the function of manually adjusting the tension of the display screen, which is conducive to reasonable control and timely adjustment of the tension of the display screen, and helps the display screen to maintain a tensioned state for a long time.

[0015] 2. The utility model discloses a tensioning device for keeping the screen unfolded for a long time. By setting a connecting rod, the storage tube and its connected structure can change position, thereby preventing the storage tube from affecting the storage of the display screen. At the same time, it facilitates the storage of the storage tube itself, which is conducive to reducing the volume of the device and reducing transportation pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a structural diagram of the display screen in the utility model;

[0019] Figure 3 It is a structural diagram of the fixing ring in the utility model;

[0020] Figure 4 It is a structural diagram of the fixed block in the utility model;

[0021] Figure 5 It is a structural diagram of the fixing hook in the utility model;

[0022] Figure 6 It is a structural schematic diagram of the extension rod in the utility model.

[0023] In the figure: 1. Top cover; 2. Bottom plate; 3. Remote control motor; 4. Display screen; 5. First rotating block; 6. Second rotating block; 7. Storage tube; 8. Threaded ring; 9. First protective tube; 10. Telescopic rod; 11. Second protective tube; 12. Extrusion rod; 13. Anti-slip nut; 14. Limiting tube; 15. Limiting block; 16. Bottom cover; 17. Spring; 18. Fixing block; 19. Screen brush; 20. Fixing rod; 21. Extension rod; 22. Connecting rod; 23. Column; 24. Bump; 25. Fixing hook; 26. Boss; 27. Storage tray; 28. Fixing ring. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Specific examples are given below.

[0026] like Figures 1 to 6As shown, a tensioning device for keeping a curtain unfolded for a long time according to an embodiment of the present invention comprises a top cover 1; a bottom cover 16 is fixedly connected to the bottom of the top cover 1; a fixing rod 20 is rotatably connected to the side wall of the bottom cover 16; a remote control motor 3 is fixedly connected to the end of the fixing rod 20; a display screen 4 is fixedly connected to the bottom of the display screen 4; a bottom plate 2 is fixedly connected to the bottom of the display screen 4; a storage tube 7 is provided between the bottom plate 2 and the bottom cover 16; a threaded ring 8 is fixedly connected to the top of the storage tube 7; a telescopic rod 10 is threadedly connected to the top of the threaded ring 8; a first protective tube 9 is fixedly connected to the top of the telescopic rod 10 There is an anti-slip nut 13; the bottom of the anti-slip nut 13 is fixedly connected to the second protective tube 11; the top of the telescopic rod 10 is fixedly connected to the extension rod 21; the top of the anti-slip nut 13 contacts the limit tube 14; the top of the extension rod 21 is fixedly connected to the limit block 15; the top of the limit tube 14 is fixedly connected to the extrusion rod 12, and the top of the extrusion rod 12 contacts the bottom of the bottom cover 16; when working, the remote control motor 3 can be controlled first to drive the fixing rod 20 to rotate inside the top cover 1. As the fixing rod 20 rotates, the display screen 4 relies on its own gravity and the gravity of the bottom plate 2 to fall down from the gap at the bottom of the bottom cover 16, and the bottom plate 2 and the display screen 4 fall completely. After that, the storage tube 7 can be adjusted to be perpendicular to the bottom plate 2, and at the same time, the extrusion rod 12 at the top of the storage tube 7 is vertically aligned with the bottom surface of the bottom cover 16. After completing the above action, the anti-slip nut 13 can be rotated. As the anti-slip nut 13 rotates relative to the telescopic rod 10, the anti-slip nut 13 itself will move upward, and at the same time drive the limiting tube 14 and the extrusion rod 12 to move upward until the extrusion rod 12 squeezes the bottom surface of the second rotating block 6. The squeezing of the second rotating block 6 by the extrusion rod 12 is transmitted to the display screen 4, thereby realizing the tensioning action of the display screen 4. During the process, when the anti-slip nut 13 moves upward too much, the limiting block 15 and the limiting tube 14 squeeze each other, The anti-slip nut 13 is forced to stop moving, and the total length of the structure can be adjusted through the threaded connection between the telescopic rod 10 and the threaded ring 8. The first protective tube 9 and the second protective tube 11 play a role in protecting the thread. In this step, the display screen 4 is tensioned by setting the telescopic rod 10, the extrusion rod 12, the anti-slip nut 13 and the limit tube 14. The extension rod 21 and the limit block 15 are used to prevent the structure from separating. The first protective tube 9 and the second protective tube 11 protect the thread, thereby realizing the function of manually adjusting the tension of the display screen 4, which is conducive to reasonable control and timely adjustment of the tension of the display screen 4, and helps the display screen 4 to maintain a tensioned state for a long time.

[0027] like Figure 1 、 Figure 2 、 Figure 3 and Figure 5As shown, the bottom of the storage tube 7 is fixedly connected to the second rotating block 6; the end of the second rotating block 6 is rotatably connected to the connecting rod 22; the bottom of the connecting rod 22 is fixedly connected to the first rotating block 5; the first rotating block 5 is rotatably connected to the inside of the bottom plate 2; during operation, the position of the storage tube 7 can be adjusted with the help of the first rotating block 5 and the bottom plate 2, and the second rotating block 6 and the connecting rod 22. After the display screen 4 is used up, the storage tube 7 and its connected structure can be moved to a state parallel to the bottom plate 2, and then the remote control motor 3 is driven to reverse and the display screen 4 is pulled up. After the display screen 4 is fully pulled up, the device can be stored; this step is carried out by setting the connecting rod 22, so that the storage tube 7 and its connected structure can change position, avoiding the storage tube 7 affecting the storage of the display screen 4, and at the same time providing convenience for the storage of the storage tube 7 itself, which is conducive to reducing the volume of the device and reducing transportation pressure.

[0028] like Figure 1 and Figure 4 As shown, a groove is provided at the bottom of the bottom cover 16, and a spring 17 is fixed to the bottom surface of the groove; a fixing block 18 is fixed to the bottom of the spring 17; during operation, after the display screen 4 is completely dropped, the extrusion rod 12 can be pushed out to a certain length with the help of the anti-slip nut 13, and then the extrusion rod 12 is aligned with the fixing block 18, and the fixing block 18 is squeezed to compress the spring 17 until the extrusion rod 12 passes over the fixing block 18 and falls into the groove at the bottom of the bottom cover 16, thus completing the fixation of the extrusion rod 12; this step fixes the top of the extrusion rod 12 by setting the spring 17 and the fixing block 18, thereby avoiding the scenario where the contact surface between the extrusion rod 12 and the bottom cover 16 slips or detaches, which is beneficial to improving the stability of the device and providing a guarantee for the long-term tensioning of the display screen 4.

[0029] like Figure 5 As shown, a protrusion 24 is fixed to the bottom of the base plate 2; a fixing hook 25 is fixed to the side wall of the protrusion 24; a column 23 is fixed to the side wall of the bottom cover 16; a column groove is opened on the side wall of the column 23, and the column groove corresponds to the size of the fixing hook 25; during operation, after the display screen 4 is completely dropped, the fixing hook 25 at the bottom of the base plate 2 can be inserted into the column groove on the column 23, and then the anti-slip nut 13 is controlled to tighten the display screen 4. As the display screen 4 is tightened, the fixing hook 25 moves downward with the deformation of the display screen 4 and is buckled with the column groove of the column 23, thereby completing the fixation of the base plate 2; this step fixes the bottom of the display screen 4 by setting the protrusion 24 and the fixing hook 25, so as to prevent the bottom of the display screen 4 from being lifted up by external factors such as strong wind, which is conducive to enhancing the stability of the display screen 4.

[0030] like Figure 4As shown, a screen brush 19 is fixedly connected to the bottom of the bottom cover 16, and the side wall of the screen brush 19 contacts the display screen 4; a boss 26 is fixedly connected to the bottom of the bottom cover 16; during operation, when the display screen 4 is driven to expand or retract, the display screen 4 is restricted by the boss 26 and rubs against the screen brush 19, thereby cleaning the dust on the surface of the display screen 4; this step cleans the surface of the display screen 4 by providing the boss 26 and the screen brush 19, avoiding dust accumulation after the display screen 4 is expanded for a long time, which is beneficial to maintaining the cleanliness of the surface of the display screen 4 and maintaining the presentation quality of the display screen 4.

[0031] like Figure 2 and Figure 3 As shown, a storage tray 27 is fixedly connected to the side wall of the fixing rod 20, and a plurality of storage trays 27 are respectively arranged in a linear array; during operation, when the fixing rod 20 is driven to rotate, the display screen 4 is stored on the storage tray 27 inside the top cover 1 and the bottom cover 16 as the fixing rod 20 rotates; this step is beneficial to increasing the torque of the fixing rod 20 by providing a plurality of storage trays 27 to store the display screen 4, thereby avoiding the situation where the remote control motor 3 cannot drive the fixing rod 20 to store the display screen 4 after long-term use.

[0032] like Figures 1 to 3 As shown, a fixing ring 28 is fixed to the side of the bottom cover 16, and the fixing rod 20 is rotatably connected to the fixing ring 28; during operation, when the remote control motor 3 drives the fixing rod 20 to rotate, the fixing rings 28 at both ends of the bottom cover 16 replace the bottom cover 16 and rub against the fixing rod 20, thereby protecting the second rotating block 6; this step reduces internal friction by arranging the fixing rings 28 on both sides of the bottom cover 16, which is conducive to extending the service life of the device.

[0033] During operation, the remote control motor 3 can be controlled first to drive the fixing rod 20 to rotate inside the top cover 1. As the fixing rod 20 rotates, the display screen 4 falls downward from the gap at the bottom of the bottom cover 16 by relying on its own gravity and the gravity of the bottom plate 2. After the bottom plate 2 and the display screen 4 have completely fallen, the storage tube 7 can be adjusted to be perpendicular to the bottom plate 2, and at the same time, the squeezing rod 12 at the top of the storage tube 7 is vertically aligned with the bottom surface of the bottom cover 16. After completing the above actions, the anti-slip nut 13 can be rotated. As the anti-slip nut 13 rotates relative to the telescopic rod 10, the anti-slip nut 13 itself will move upward, and at the same time drive the limiting tube 14 and the squeezing rod 12 to move upward until the squeezing rod 12 is squeezed. The rod 12 squeezes the bottom surface of the second rotating block 6, and the squeezing of the second rotating block 6 by the squeezing rod 12 is transmitted to the display screen 4, so as to realize the tensioning action of the display screen 4. During the process, when the anti-slip nut 13 moves upward too much, the limit block 15 and the limit tube 14 squeeze each other, thereby forcing the anti-slip nut 13 to stop moving. The total length of the structure can be adjusted through the threaded connection relationship between the telescopic rod 10 and the threaded ring 8. The first protective tube 9 and the second protective tube 11 play the role of protecting the thread. The position of the storage tube 7 can be adjusted with the help of the first rotating block 5 and the bottom plate 2, the second rotating block 6 and the connecting rod 22. After the display screen 4 is used, the storage tube 7 and its The connected A moves to a state parallel to the base plate 2, and then drives the remote control motor 3 to reverse and pull up the display screen 4. After the display screen 4 is fully pulled up, the device can be stored. After the display screen 4 is completely dropped, the extrusion rod 12 can be pushed out to a certain length with the help of the anti-slip nut 13, and then the extrusion rod 12 is aligned with the fixing block 18, and the fixing block 18 is squeezed to compress the spring 17 until the extrusion rod 12 passes the fixing block 18 and falls into the groove at the bottom of the bottom cover 16, that is, the fixing of the extrusion rod 12 is completed. After the display screen 4 is completely dropped, the fixing hook 25 at the bottom of the base plate 2 can be inserted into the column groove on the column 23, and then the anti-slip nut 13 is controlled to tighten the display screen 4. As the display screen 4 is tensioned, the fixing hook 25 moves downward with the deformation of the display screen 4 and is buckled with the column groove of the column 23, thereby completing the fixation of the base plate 2. In the process of driving the display screen 4 to expand or retract, the display screen 4 is restricted by the boss 26 and rubs against the screen brush 19, which can achieve the cleaning of dust on the surface of the display screen 4. In the process of driving the fixing rod 20 to rotate, the display screen 4 is stored on the storage tray 27 inside the top cover 1 and the bottom cover 16 as the fixing rod 20 rotates. In the process of driving the fixing rod 20 to rotate by the remote control motor 3, the fixing rings 28 at both ends of the bottom cover 16 replace the bottom cover 16 and rub against the fixing rod 20, thereby protecting the second rotating block 6.

[0034] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A tensioning device for keeping a curtain stretched for a long time, comprising a top cover (1); characterized in that: The bottom of the top cover (1) is fixedly connected to the bottom cover (16); the side wall of the bottom cover (16) is rotatably connected to a fixing rod (20); the end of the fixing rod (20) is fixedly connected to a remote control motor (3); the bottom of the fixing rod (20) is fixedly connected to a display screen (4); the bottom of the display screen (4) is fixedly connected to a bottom plate (2); a storage tube (7) is provided between the bottom plate (2) and the bottom cover (16); the top of the storage tube (7) is fixedly connected to a threaded ring (8); the top of the threaded ring (8) is threadedly connected to a telescopic rod (10); the threaded ring ( 8) is fixedly connected to a first protective tube (9); the top of the telescopic rod (10) is threadedly connected to an anti-slip nut (13); the bottom of the anti-slip nut (13) is fixedly connected to a second protective tube (11); the top of the telescopic rod (10) is fixedly connected to an extension rod (21); the top of the anti-slip nut (13) contacts a limit tube (14); the top of the extension rod (21) is fixedly connected to a limit block (15); the top of the limit tube (14) is fixedly connected to an extrusion rod (12), and the top of the extrusion rod (12) contacts the bottom of the bottom cover (16).

2. The tensioning device for keeping a curtain stretched for a long time according to claim 1, characterized in that: The bottom of the storage tube (7) is fixedly connected to a second rotating block (6); the end of the second rotating block (6) is rotatably connected to a connecting rod (22); the bottom of the connecting rod (22) is fixedly connected to a first rotating block (5); the first rotating block (5) is rotatably connected to the inside of the bottom plate (2).

3. The tensioning device for keeping a curtain stretched for a long time according to claim 2, characterized in that: The bottom of the bottom cover (16) is provided with a groove, and the bottom surface of the groove is fixedly connected to a spring (17); the bottom of the spring (17) is fixedly connected to a fixing block (18).

4. The tensioning device for keeping a curtain stretched for a long time according to claim 2, characterized in that: A protrusion (24) is fixedly connected to the bottom of the base plate (2); a fixing hook (25) is fixedly connected to the side wall of the protrusion (24); a column (23) is fixedly connected to the side wall of the bottom cover (16); a column groove is opened on the side wall of the column (23), and the column groove is set to a size corresponding to the fixing hook (25).

5. The tensioning device for keeping a curtain stretched for a long time according to claim 4, characterized in that: A screen brush (19) is fixedly connected to the bottom of the bottom cover (16), and a side wall of the screen brush (19) contacts the display screen (4); a boss (26) is fixedly connected to the bottom of the bottom cover (16).

6. The tensioning device for keeping a curtain stretched for a long time according to claim 1, characterized in that: A storage tray (27) is fixedly connected to the side wall of the fixing rod (20), and a plurality of storage trays (27) are respectively arranged in a linear array.

7. The tensioning device for keeping a curtain stretched for a long time according to claim 5, characterized in that: A fixing ring (28) is fixed to the side surface of the bottom cover (16), and the fixing rod (20) is rotatably connected to the fixing ring (28).

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