Light box picture tightening device

Abstract

The utility model belongs to the field of lamp box design, and particularly relates to a lamp box picture tightening device which comprises a main machine box, a first installation frame is fixedly connected to the inner side of the main machine box, tensioning assemblies which are evenly distributed are arranged on the inner side of the first installation frame, and second installation frames which are evenly distributed are fixedly connected to the inner side wall of the first installation frame. A fixing rod is fixedly connected to the inner side of the bottom end of the second mounting frame, front and back opposite connecting rods are rotationally connected to the outer side of the fixing rod, a clamping disc is fixedly connected to the outer side of the top end of each connecting rod, and a fixing bolt is in threaded connection with the outer wall of the outer side of each fixing rod. The utility model provides a lamp box picture tightening device which can ensure uniform tension distribution on the surface of a picture by adjusting the stretching angle of the picture. In this way, the situation that the picture is wavy, uneven or locally stretched excessively can be avoided, and the flatness and visual quality of the overall surface are kept.

Description

Technical Field

[0001] The utility model belongs to the field of light box design, in particular to a light box picture tensioning device. Background Art

[0002] A light box display tensioner is a specialized device used to maintain a flat and taut surface on the light box display (i.e., the printed or displayed material on the backlight panel). It is widely used in commercial advertising, exhibitions, and interior decoration to ensure optimal visual quality and durability of displayed material.

[0003] However, in the actual use of existing light box screen tensioning devices, some devices have fixed tension angles. This can cause different parts of the screen to be subject to uneven tension, resulting in wavy or uneven surfaces. This can significantly reduce the visual quality of the screen, especially in backlit environments, where it can cause uneven light transmission and affect the viewing experience.

[0004] To this end, the utility model provides a light box picture tightening device. Utility Model Content

[0005] To address the shortcomings of existing technologies and address the problem of uneven tension affecting different parts of a display, which can cause wavy or uneven surfaces, significantly reducing the visual quality of the display, especially in backlit environments, where uneven light transmission can affect the viewing experience, this utility model proposes a light box display tensioning device.

[0006] The cam is fixedly provided with a first mounting bracket, and the first mounting bracket has a first end fixedly provided with a second mounting bracket, the second end of the second mounting bracket being fixedly provided with a second mounting bracket, the second end of the second mounting bracket being fixedly provided with a second mounting bracket, the second end of the second mounting bracket being fixedly provided with a second mounting bracket, the second end of the second mounting bracket being fixedly provided with a second mounting bracket, the second end of the second mounting bracket being fixedly provided with a second mounting bracket, the second end of the second mounting bracket being fixedly provided with a second mounting bracket, the second end of the second mounting bracket being fixedly provided with a second mounting bracket,

[0007] Through the above technical solution, the guide wheel can be driven to rotate synchronously by rotating the connecting rod, thereby adjusting the stretching angle of the tensioning rope at different positions. At the same time, the locking plate and the limit plate are engaged with each other to fix the angle of the connecting rod, so that the connecting rod can be locked, and the stretching angle can be adjusted as needed.

[0008] Furthermore, the buffer assembly includes a spring, the bottom of the right top end of the tensioning rope is fixedly connected to a first hinged frame, the bottom end of the first hinged frame is rotatably connected to a sliding sleeve, the inner wall of the inner top end of the sliding sleeve is fixedly connected to a spring, the bottom end of the spring is fixedly connected to a transmission rod, the bottom end of the transmission rod is rotatably connected to a second hinged frame, and the second hinged frame is fixedly connected to the bottom end of the right side of the tensioning rope;

[0009] With the above technical solution, the sliding sleeve and the transmission rod are pulled toward the middle position by the spring with the inner wall of the top end of the sliding sleeve and the outer wall of the top end of the transmission rod serving as stress points.

[0010] Furthermore, the guide assembly includes a third guide roller, a first guide roller rotatably connected to the top inner side of the first mounting frame, a second guide roller rotatably connected to the front inner side of the top inner side of the first mounting frame, a third guide roller rotatably connected to the bottom end of the second guide roller rotatably connected to the front inner side of the top inner side of the first mounting frame, a fourth guide roller rotatably connected to the front inner side of the middle inner side of the first mounting frame, and a fifth guide roller rotatably connected to the middle of the middle inner side of the first mounting frame;

[0011] Through the above technical solution, the guide rollers 1, 2, 3 and 4 are used to limit the tensioning rope, thereby changing the force direction between the connecting ball position and the guide wheel set on the inner wall of the first mounting frame, so that the force direction of the tensioning rope and the guide wheel are relatively perpendicular, and at the same time, the guide rollers 4 and 5 are used to adjust the force angle of the tensioning rope between the guide wheel set on the inner wall of the first mounting frame and the guide wheel set on the outer side of the fixed column.

[0012] Furthermore, the guide assembly is rotatably connected to the tensioning rope;

[0013] Through the above technical solution, multiple guide rollers in the buffer assembly are rotatably connected to the tension rope, thereby guiding the force direction of each section of the tension rope, thereby increasing the stability of the device.

[0014] Furthermore, a sealing frame is fixedly connected to the inner side of the front end of the main chassis, and a supporting foot is fixedly connected to the bottom end of the main chassis;

[0015] Through the above technical solution, the main chassis is supported by the supporting feet to raise the height of the main chassis.

[0016] Furthermore, the size of the middle opening of the sealing frame is smaller than the advertising cloth;

[0017] Through the above technical solution, the display range of the advertising cloth is limited by the sealing frame.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1. The light box image tensioning device described in this utility model rotates a connecting rod to drive the guide wheel to rotate synchronously, thereby adjusting the tension angle of the tension rope at different positions. At the same time, the engaging plate and the limit plate engage with each other to fix the angle of the connecting rod, thereby locking the connecting rod and adjusting the tension angle as needed. By adjusting the tension angle of the image, the tension distribution on the image surface can be evenly distributed. This can avoid the image from appearing wavy, uneven, or locally overstretched, maintaining the overall surface smoothness and visual quality.

[0020] 2. The light box screen tensioning device described in the present invention can simultaneously stretch the four corners of the advertising cloth through the cooperation of multiple sets of tensioning components and guide components. At the same time, the buffer component can be used to install and tighten advertising cloths of various sizes, thereby increasing the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the main chassis of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the advertising cloth in the present invention;

[0025] Figure 4 yes Figure 3 A partial enlarged view of the middle part;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixed column in the utility model;

[0027] Figure 6 It is a schematic diagram of the cross-sectional structure of the first mounting bracket in the present invention;

[0028] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle;

[0029] Figure 8 This is a schematic diagram of the structure of the engaging disc and the engaging disc in the present invention;

[0030] Figure 9It is a schematic diagram of the cross-sectional structure of the sliding sleeve in the utility model;

[0031] In the figure: 1. Support foot; 11. Sealing frame; 12. Main chassis; 2. First mounting frame; 21. Fixed column; 3. Second mounting frame; 31. Fixed rod; 32. Connecting rod; 33. Engaging plate; 34. Limiting plate; 35. Fixing bolt; 36. Guide wheel; 4. Advertising cloth; 41. Connecting ball; 42. Tensioning rope; 5. Guide roller one; 51. Guide roller two; 52. Guide roller three; 53. Guide roller four; 54. Guide roller five; 6. First articulated frame; 61. Sliding sleeve; 62. Spring; 63. Transmission rod; 64. Second articulated frame. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods. Example 1:

[0033] like Figures 1 to 9As shown, the light box screen tensioning device described in the present invention includes a main box 12, a first mounting frame 2 is fixedly connected to the inside of the main box 12, the first mounting frame 2 is fixed by the main box 12, the first mounting frame 2 is provided with a uniformly distributed tensioning component on the inside, the inner wall of the first mounting frame 2 is fixedly connected to a uniformly distributed second mounting frame 3, multiple groups of second mounting frames 3 are fixed by the first mounting frame 2, a fixing rod 31 is fixedly connected to the inside of the bottom end of the second mounting frame 3, and the fixing rod 31 is fixed by the second mounting frame 3. The outer side of the fixing rod 31 is rotatably connected to the front and rear opposite connecting rods 32, and the connecting rod 32 is limited by the fixing rod 31. The outer side of the top of the connecting rod 32 is fixedly connected to the clamping plate 33, and the clamping plate 33 is fixed by the connecting rod 32. The outer wall of the outer side of the fixing rod 31 is threadedly connected to a fixing bolt 35, and the fixing bolt 35 is limited by the connecting rod 32. The inner side of the fixing bolt 35 is rotatably connected to the limiting plate 34, and the limiting plate 34 is limited by the fixing bolt 35. The limiting plate 34 is clamped and connected to the clamping plate 33, and the fixing plate 31 is fixed by rotating. The fixed bolt 35 rotates toward the inside of the fixing rod 31, thereby driving the limit plate 34 to move inward synchronously, and is clamped and fixed with the limit plate 34 and the clamping plate 33. The inner side of the bottom end of the connecting rod 32 is connected to the guide wheel 36 for rotation, and the guide wheel 36 is limited by the connecting rod 32. The outer side of the guide wheel 36 is connected to the tensioning rope 42 for rotation, and the tensioning rope 42 is stretched at the support point through the guide wheel 36. The middle end of the tensioning rope 42 is fixedly connected to the connecting ball 41, and the outer end of the connecting ball 41 is fixedly connected to the advertising cloth 4. The advertising cloth is stretched by the connecting ball 41. 4 The four corners are fixed to the middle end of the tensioning rope 42. A buffer component is provided at one inner end of the tensioning rope 42, and the two ends of the tensioning rope 42 are connected by the buffer component to provide buffering. The inner wall of the first mounting frame 2 is provided with upper and lower relative guide components, and the first mounting frame 2 is used to limit the upper and lower guide components. A fixing column 21 is fixedly connected to the inner wall of the inner rear end of the main box 12, and the outer side of the fixing column 21 is provided with upper and lower relative tensioning components, which are fixed to the middle end of the inner wall of the main box 12 by the fixing column 21.

[0034] The buffer assembly includes a spring 62, and the bottom of the top right side of the tensioning rope 42 is fixedly connected to the first articulated frame 6, and the first articulated frame 6 is fixed by the tensioning rope 42. The bottom end of the first articulated frame 6 is rotatably connected to the sliding sleeve 61, and the sliding sleeve 61 and the tensioning rope 42 are connected through the first articulated frame 6. The inner wall of the top inner side of the sliding sleeve 61 is fixedly connected to the spring 62, and the bottom end of the spring 62 is fixedly connected to the transmission rod 63, and the sliding sleeve 61 and the transmission rod 63 are connected through the spring 62. The bottom end of the transmission rod 63 is rotatably connected to the second articulated frame 64, and the second articulated frame 64 is fixedly connected to the bottom right side of the tensioning rope 42, and the tensioning rope 42 and the transmission rod 63 are connected through the second articulated frame 64.

[0035] The guide assembly includes a guide roller three 52, a guide roller one 5 rotatably connected to the top inner side of the first mounting frame 2, a guide roller two 51 rotatably connected to the front inner top side of the first mounting frame 2, a guide roller two 51 rotatably connected to the bottom end of the guide roller three 52 rotatably connected to the front inner top side of the first mounting frame 2, a guide roller four 53 rotatably connected to the front inner middle side of the first mounting frame 2, and a guide roller five 54 rotatably connected to the middle part of the middle end of the first mounting frame 2. The guide roller one 5, guide roller two 51, guide roller three 52, guide roller four 53 and guide roller five 54 are limited by the first mounting frame 2 at the same time.

[0036] The guide assembly is rotatably connected to the tensioning rope 42 , and the guide assembly guides the tensioning rope 42 and guides the connection direction between the tensioning rope 42 and the guide wheel 36 .

[0037] A sealing frame 11 is fixedly connected to the inner side of the front end of the main chassis 12 , and a supporting foot 1 is fixedly connected to the bottom end of the main chassis 12 , so that the main chassis 12 is supported by the supporting foot 1 .

[0038] The size of the middle opening of the sealing frame 11 is smaller than the advertising cloth 4 .

[0039] Working principle: When the light box screen tensioning device is running, first pull the first hinge frame 6 and the second hinge frame 64 to both sides, then connect the four corners of the advertising cloth 4 with the connecting ball 41, and then pull the sliding sleeve 61 and the transmission rod 63 to the middle end through the spring 62 with each other as stress points, so as to tighten the tension rope 42, and then through the tension rope 42 and the guide wheel 36, the four corners of the advertising cloth 4 are stretched in four directions at the same time, so as to achieve the tightening of the advertising cloth 4. If the tightening angle is not appropriate, it will cause When waves, unevenness or local over-stretching occur, the tensioning components at different positions are adjusted as needed. When adjusting, it is only necessary to rotate the fixing bolt 35 to cancel the clamping of the limit plate 34, cancel the clamping fixation of the clamping plate 33 and the limit plate 34, so that the connecting rod 32 can be rotated, and adjust the relative angle between the guide wheel 36 and the tensioning rope 42 to adjust the stretching angle. Then, rotate the fixing bolt 35 to clamp the clamping plate 33 and the limit plate 34 to lock the angle of the connecting rod 32.

[0040] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the scope of protection of the present invention.

[0042] 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 light box screen tensioning device, characterized in that: The invention comprises a main case (12), wherein the inner side of the main case (12) is fixedly connected to a first mounting frame (2), the inner side of the first mounting frame (2) is provided with a uniformly distributed tensioning assembly, the inner side wall of the first mounting frame (2) is fixedly connected to a uniformly distributed second mounting frame (3), the inner side of the bottom end of the second mounting frame (3) is fixedly connected to a fixing rod (31), the outer side of the fixing rod (31) is rotatably connected to a front and rear opposite connecting rod (32), the outer side of the top end of the connecting rod (32) is fixedly connected to a clamping disk (33), the outer side wall of the outer side of the fixing rod (31) is threadedly connected to a fixing bolt (35), and the inner side of the fixing bolt (35) is rotatably connected to a limiting disk (33). 4), the limit plate (34) is engaged with the locking plate (33), the inner side of the bottom end of the connecting rod (32) is rotatably connected to the guide wheel (36), the outer side of the guide wheel (36) is rotatably connected to the tensioning rope (42), the middle end of the tensioning rope (42) is fixedly connected to the connecting ball (41), the outer end of the connecting ball (41) is fixedly connected to the advertising cloth (4), the inner end of the tensioning rope (42) is provided with a buffer assembly, the inner side wall of the first mounting frame (2) is provided with a guide assembly opposite to the upper and lower sides, the inner rear end inner wall of the main box (12) is fixedly connected to the fixing column (21), and the outer side of the fixing column (21) is provided with a tensioning assembly opposite to the upper and lower sides.

2. A light box screen tensioning device according to claim 1, characterized in that: The buffer assembly includes a spring (62), the bottom of the right top end of the tensioning rope (42) is fixedly connected to a first articulated frame (6), the bottom end of the first articulated frame (6) is rotatably connected to a sliding sleeve (61), the inner wall of the inner top end of the sliding sleeve (61) is fixedly connected to a spring (62), the bottom end of the spring (62) is fixedly connected to a transmission rod (63), the bottom end of the transmission rod (63) is rotatably connected to a second articulated frame (64), and the second articulated frame (64) is fixedly connected to the bottom end of the right side of the tensioning rope (42).

3. A light box screen tensioning device according to claim 2, characterized in that: The guide assembly includes a guide roller three (52), a guide roller one (5) is rotatably connected to the top inner side of the first mounting frame (2), a guide roller two (51) is rotatably connected to the front inner side of the top inner side of the first mounting frame (2), a guide roller three (52) is rotatably connected to the bottom end of the guide roller two (51) at the front inner side of the top inner side of the first mounting frame (2), a guide roller four (53) is rotatably connected to the front inner side of the middle end of the first mounting frame (2), and a guide roller five (54) is rotatably connected to the middle part of the middle end of the first mounting frame (2).

4. A light box screen tensioning device according to claim 3, characterized in that: The guide assembly is rotatably connected to the tensioning rope (42).

5. A light box screen tensioning device according to claim 4, characterized in that: A sealing frame (11) is fixedly connected to the inner side of the front end of the main box (12), and a supporting foot (1) is fixedly connected to the bottom end of the main box (12).

6. The light box screen tensioning device according to claim 5, characterized in that: The size of the middle opening of the sealing frame (11) is smaller than the advertising cloth (4).

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