Screen tensioning device

Abstract

The utility model provides a screen tensioning device which comprises a mounting plate and tensioning mechanisms, the tensioning mechanisms are arranged on the left side and the right side of the top of the mounting plate, each tensioning mechanism comprises a transmission case, sliding rods are welded to the front side and the rear side of each transmission case, sliding rails are arranged on the periphery of the top of the mounting plate, and the sliding rails are connected with the transmission cases. One end of the sliding rod is slidably connected into the sliding rail, a servo motor is arranged at the top of the transmission box, the output end of the servo motor is fixedly connected with a right-hand and left-hand threaded rod, the upper side and the lower side of the right-hand and left-hand threaded rod are both in threaded connection with threaded sleeves, connecting rods are welded to the outer sides of the threaded sleeves, and U-shaped plates are welded to the outer sides of the connecting rods. And the front side of the U-shaped plate is in threaded connection with a fastening bolt. By arranging the tensioning mechanism, the screen can be tensioned longitudinally and transversely, so that the periphery of the screen is stressed, and the problem that the watching experience of people is affected due to the fact that the screen is wrinkled after long-time use is avoided.

Description

Technical Field

[0001] The utility model relates to a tensioning device, in particular to a screen tensioning device, belonging to the technical field of screens. Background Art

[0002] The screen refers to occasions such as conference rooms and home theaters. Existing screens are usually fixed in various ways, depending on the usage scenario and needs. The screen can be fixed directly to the wall by a bracket or hook, which is one of the most common ways and is particularly suitable for fixing cloth screens.

[0003] However, the existing screens are usually tightened with ropes in daily use, and the tension is uncontrollable. Moreover, after long-term use, the screen may be insufficiently tightened, resulting in wrinkles on the screen surface, affecting people's viewing experience.

[0004] To this end, a screen tensioning device is proposed. Utility Model Content

[0005] In view of this, the utility model provides a screen tensioning device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0006] The technical solution of the utility model is implemented as follows: a screen tensioning device includes a mounting plate and a tensioning mechanism, wherein the tensioning mechanism is arranged on the left and right sides of the top of the mounting plate, the tensioning mechanism includes a transmission box, and sliding rods are welded on the front and rear sides of the transmission box. Sliding rails are opened around the top of the mounting plate, and one end of the sliding rod is slidably connected to the sliding rail.

[0007] Further preferably, a servo motor is provided on the top of the transmission box, the output end of the servo motor is fixedly connected with a positive and negative threaded rod, the upper and lower sides of the positive and negative threaded rod are threadedly connected with a threaded sleeve, the outer side of the threaded sleeve is welded with a connecting rod, and the outer side of the connecting rod is welded with a U-shaped plate.

[0008] Further preferably, a fastening bolt is threadedly connected to the front side of the U-shaped plate, and a back side of the fastening bolt is movably connected to a limiting groove through a bearing.

[0009] Further preferably, magnetic plates are provided on both left and right sides of the top of the mounting plate, a convex plate is welded to the outer side of the transmission box, an adjusting bolt is threadedly connected to the inner surface of the convex plate, and a magnet is provided at the bottom of the adjusting bolt.

[0010] Further preferably, a limiting groove is provided on the inner side of the transmission box, the inner side of the connecting rod passes through the limiting groove and extends to the inner side of the transmission box, and the outer wall of the connecting rod is tightly fitted with the limiting groove.

[0011] Further preferably, a slide groove is opened on the outer side of the inner cavity of the transmission box, a slider is welded on the outer side of the threaded sleeve, and the slider is slidably connected in the slide groove.

[0012] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0013] 1. The utility model can tension the screen longitudinally and transversely by providing a tensioning mechanism, so that the screen is stressed all around, thereby avoiding wrinkles on the screen after long-term use, which affects people's viewing experience.

[0014] 2. The utility model can clamp and limit the four corners of the screen by setting a U-shaped plate, a fastening bolt and a limit groove, which is convenient for tensioning and avoids falling off. By setting a magnetic plate, a convex plate, an adjusting bolt and a magnet, the tensioning mechanism can be limited and fixed to avoid displacement and subsequent change in the position of the screen, further improving the tensioning force. By setting a limit groove, the connecting rod can be limited to avoid displacement during movement and then affecting the position of the U-shaped plate. By setting a sliding groove and a slider, the stability of the threaded sleeve during movement can be improved.

[0015] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a front view structural diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the tensioning mechanism of the utility model;

[0019] Figure 3 This is a structural diagram of a U-shaped plate of the utility model;

[0020] Figure 4 For the utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0021] Figure numerals: 1. Mounting plate; 2. Slide rail; 3. Magnetic plate; 4. Magnet; 5. Convex plate; 6. Adjusting bolt; 7. Sliding rod; 8. Tensioning mechanism; 801. Transmission box; 802. Servo motor; 803. Connecting rod; 804. Positive and negative threaded rod; 805. U-shaped plate; 806. Fastening bolt; 807. Threaded sleeve; 808. Slider; 809. Slide groove; 810. Limit groove. DETAILED DESCRIPTION

[0022] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0023] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0024] like Figure 1-4 As shown, an embodiment of the utility model provides a screen tensioning device, including a mounting plate 1 and a tensioning mechanism 8, the tensioning mechanism 8 is arranged on the left and right sides of the top of the mounting plate 1, the tensioning mechanism 8 includes a transmission box 801, the front and rear sides of the transmission box 801 are welded with sliding rods 7, the top of the mounting plate 1 is provided with slide rails 2, one end of the sliding rod 7 is slidably connected to the slide rail 2, a servo motor 802 is arranged on the top of the transmission box 801, the output end of the servo motor 802 is fixedly connected with a positive and negative threaded rod 804, the upper and lower sides of the positive and negative threaded rod 804 are threadedly connected with a threaded sleeve 807, the outer side of the threaded sleeve 807 is welded with a connecting rod 803, and the outer side of the connecting rod 803 is welded with a U-shaped plate 805.

[0025] In this embodiment, by providing a tensioning mechanism 8, the screen can be tensioned longitudinally and transversely so that stress is applied on all sides, thereby preventing wrinkles from forming on the screen after long-term use, which affects people's viewing experience.

[0026] In one embodiment, the front side of the U-shaped plate 805 is threadedly connected with a fastening bolt 806, and the back side of the fastening bolt 806 is movably connected to the limiting groove 810 through a bearing, and magnetic plates 3 are arranged on both sides of the top of the mounting plate 1, and a convex plate 5 is welded to the outer side of the transmission box 801, and the inner surface of the convex plate 5 is threadedly connected with an adjusting bolt 6, and a magnet 4 is arranged at the bottom of the adjusting bolt 6, and a limiting groove 810 is provided on the inner side of the transmission box 801, and the inner side of the connecting rod 803 passes through the limiting groove 810 and extends to the inner side of the transmission box 801, and the outer wall of the connecting rod 803 is tightly fitted with the limiting groove 810, and a sliding groove 809 is provided on the outer side of the inner cavity of the transmission box 801, and a slider 808 is welded to the outer side of the threaded sleeve 807, and the slider 808 is slidably connected in the sliding groove 809.

[0027] In this embodiment, by setting a U-shaped plate 805, a fastening bolt 806 and a limiting groove 810, the four corners of the screen can be clamped and limited, which is convenient for tensioning and avoids falling off. By setting a magnetic plate 3, a convex plate 5, an adjusting bolt 6 and a magnet 4, the tensioning mechanism 8 can be limited and fixed to avoid displacement and subsequent change in the position of the screen, thereby further improving the tensioning force. By setting a limiting groove 810, the connecting rod 803 can be limited to avoid displacement during movement and then affect the position of the U-shaped plate 805. By setting a sliding groove 809 and a slider 808, the stability of the threaded sleeve 807 during movement can be improved.

[0028] When the utility model is working: first, put the screen to the inner side of the U-shaped plate 805. At this time, the four corners of the screen are respectively located in the four U-shaped plates 805. Then, by rotating the fastening bolts 806, the limiting grooves 810 are driven to move inward. When the limiting grooves 810 are in contact with the screen, the four corners of the screen can be fixed. By pulling the transmission box 801 outward, the sliding rod 7 is driven to slide outward along the inner cavity of the slide rail 2. At this time, the lateral tensioning force of the screen changes. When the screen is tightened to be smooth, the horizontal tensioning force of the screen is changed by rotating the adjustment screw. The bolt 6 drives the magnet 4 to move downward, and generates suction after contacting the magnetic plate 3, completing the limit of the transmission box 801 to avoid displacement. Finally, the servo motor 802 drives the positive and negative threaded rods 804 to rotate, and the positive and negative threaded rods 804 drive the threaded sleeves 807 to move outward through the action of the threads. The threaded sleeve 807 drives the U-shaped plate 805 to move outward through the connecting rod 803 to adjust the longitudinal tension of the screen. After adjusting to the smoothness of the screen, the servo motor 802 is turned off to complete the tensioning of the screen.

[0029] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A screen tensioning device, characterized in that: The invention comprises a mounting plate (1) and a tensioning mechanism (8), wherein the tensioning mechanism (8) is arranged on the left and right sides of the top of the mounting plate (1), and the tensioning mechanism (8) comprises a transmission box (801). The front and rear sides of the transmission box (801) are both welded with sliding rods (7). The top of the mounting plate (1) is provided with sliding rails (2) around its periphery, and one end of the sliding rod (7) is slidably connected to the inside of the sliding rail (2).

2. A screen tensioning device according to claim 1, characterized in that: A servo motor (802) is disposed on the top of the transmission box (801); a forward and reverse threaded rod (804) is fixedly connected to the output end of the servo motor (802); threaded sleeves (807) are threadedly connected to the upper and lower sides of the forward and reverse threaded rod (804); a connecting rod (803) is welded to the outer side of the threaded sleeve (807); and a U-shaped plate (805) is welded to the outer side of the connecting rod (803).

3. A screen tensioning device according to claim 2, characterized in that: The front side of the U-shaped plate (805) is threadedly connected with a fastening bolt (806), and the back side of the fastening bolt (806) is movably connected to the limiting groove (810) via a bearing.

4. A screen tensioning device according to claim 1, characterized in that: Magnetic plates (3) are provided on both left and right sides of the top of the mounting plate (1); a convex plate (5) is welded to the outside of the transmission box (801); an adjusting bolt (6) is threadedly connected to the inner surface of the convex plate (5); and a magnet (4) is provided at the bottom of the adjusting bolt (6).

5. A screen tensioning device according to claim 2, characterized in that: A limiting groove (810) is provided on the inner side of the transmission box (801), the inner side of the connecting rod (803) passes through the limiting groove (810) and extends to the inner side of the transmission box (801), and the outer wall of the connecting rod (803) is tightly fitted to the limiting groove (810).

6. A screen tensioning device according to claim 2, characterized in that: A slide groove (809) is provided on the outer side of the inner cavity of the transmission box (801), a slider (808) is welded on the outer side of the threaded sleeve (807), and the slider (808) is slidably connected in the slide groove (809).

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