Radian adjusting mechanism and LED display screen

Abstract

The utility model relates to the technical field of display screens, in particular to a radian adjusting mechanism and an LED display screen. The radian adjusting mechanism comprises a shell, a mounting block, a driving assembly, a gear, an arc-shaped first rack and an arc-shaped second rack, an arc-shaped groove is formed in the shell, the two ends of the arc-shaped groove are open, the mounting block is slidably connected into the arc-shaped groove, the arc-shaped groove is provided with a front side wall and a rear side wall in the radial direction of the arc-shaped groove, and the mounting block is provided with an arc-shaped surface; the arc-shaped surface of the mounting block is attached to the front side wall of the arc-shaped groove; the first rack is arranged on the rear side wall of the arc-shaped groove, the second rack is arranged on the side face, deviating from the arc-shaped face, of the mounting block, the first rack and the second rack are arranged in a spaced mode, and the gear is located between the first rack and the second rack and engaged with the first rack and the second rack at the same time; the driving assembly is connected with the gear and used for driving the gear to rotate so that the shell and the mounting block can move in the opposite directions. According to the utility model, the LED display screen can be stressed and bent to form a curved screen structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of display screens, and in particular relates to a radian adjustment mechanism and an LED display screen. Background Art

[0002] An LED display is an electronic device that can display various information such as text, graphics, images, animations, market information, videos, and video signals.

[0003] Existing LED displays typically require a larger display to display more information. However, since the human eye cannot directly see the full information displayed on a larger display, the curvature of the display needs to be changed to facilitate viewing. However, bending a larger display is difficult. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in view of the problem that it is difficult to bend the main body of the existing LED display screen, a curvature adjustment mechanism and an LED display screen are provided.

[0005] To solve the above technical problems, on the one hand, an embodiment of the present utility model provides a curvature adjustment mechanism, comprising a housing, a mounting block, a drive assembly, a gear, a first arc-shaped rack, and a second arc-shaped rack, wherein the housing is provided with an arc-shaped groove with openings at both ends, the mounting block is slidably connected to the arc-shaped groove, the arc-shaped groove having a front side wall and a rear side wall along its radial direction, the mounting block having a curved surface, the curved surface of the mounting block being in contact with the front side wall of the arc-shaped groove;

[0006] The first rack is provided on the rear side wall of the arc-shaped groove, the second rack is provided on the side of the mounting block away from the arc-shaped surface, the first rack and the second rack are arranged at intervals, and the gear is located between the first rack and the second rack and meshes with both the first rack and the second rack;

[0007] The driving assembly is connected to the gear and is used to drive the gear to rotate so that the housing and the mounting block can move in opposite directions.

[0008] Optionally, the driving assembly includes a rotating rod, the housing is provided with a through slot, the through slot is communicated with the arc-shaped slot, and the extending direction of the through slot is the same as the extending direction of the arc-shaped slot;

[0009] The gear is mounted on the rotating rod, and the rotating rod is slidably connected in the through slot.

[0010] Optionally, the curvature adjustment mechanism also includes a locking assembly, which is arranged on the rotating rod. The locking assembly has a locking state and an unlocking state. When the locking assembly is in the locking state, the locking assembly abuts and locks the shell; when the locking assembly is in the unlocking state, the shell can slide relative to the locking assembly.

[0011] Optionally, the locking assembly includes a support seat, a handle, a locking portion and a fixed seat, the support seat and the fixed seat are sleeved on the outer circumference of the rotating rod, the shell is slidably connected to the support seat, and the locking portion is provided on the support seat;

[0012] A cam is provided on the handle, and the cam is rotatably mounted on the support seat. The outer edge of the cam abuts against the fixed seat. The cam is used to drive the locking assembly to switch between an unlocked state and a locked state. When the locking assembly is in the locked state, the locking portion abuts against the shell and locks.

[0013] Optionally, the locking assembly further comprises an elastic member, and the elastic member is sleeved on the outer circumference of the rotating rod;

[0014] The support base is provided with a first limiting groove at one end close to the fixing base, and the fixing base is provided with a second limiting groove at one end close to the support base. The elastic member is installed in the first limiting groove and the second limiting groove.

[0015] Optionally, a guide column is provided on one end of the fixing seat close to the supporting seat, and a guide hole matching the guide column is provided on the supporting seat, and the guide column is slidably connected to the guide hole.

[0016] Optionally, the driving assembly further includes a rotating sleeve for rotating the rotating rod, and the rotating sleeve is fixedly sleeved on the outer circumference of the rotating rod.

[0017] Optionally, a marking position is provided on the support seat, and a scale for displaying the angle of rotation of the shell relative to the marking position is provided on the shell.

[0018] Optionally, a sink is provided at the bottom of the arc-shaped groove, and the mounting block is slidably connected in the sink.

[0019] The curvature adjustment mechanism provided by the embodiment of the present invention, when in operation, the driving assembly drives the gear to rotate, and the gear drives the housing and the mounting block to move simultaneously in opposite directions through the first rack and the second rack. The arrangement of the arc groove, the arc surface, the arc-shaped first rack and the arc-shaped second rack enables the housing and the mounting block to move along an arc-shaped trajectory. When the present device is applied to an LED display screen, the mounting block is fixedly connected to the power control box of the LED display screen, and the housing is fixedly connected to the box frame of the LED display screen, so that the LED display screen is bent under force to form a curved screen structure. At the same time, compared with the traditional curved screen structure formed by splicing multiple screen bodies, the curved screen structure formed by the present invention is formed by bending one screen body, so that the obtained curved screen structure is more uniformly curved and has a better display effect.

[0020] On the other hand, an embodiment of the present invention provides an LED display screen, including an LED display unit, a box frame, a power control box and the above-mentioned curvature adjustment mechanism, wherein the LED display unit is installed on the box frame, the power control box is fixed on the LED display unit, and the curvature adjustment mechanism is connected between the box frame and the power control box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of the radian adjustment mechanism provided by one embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the radian adjustment mechanism provided by one embodiment of the present utility model after partial disassembly;

[0023] Figure 3 This is an exploded view of the radian adjustment mechanism provided by one embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the radian adjustment mechanism provided by one embodiment of the present utility model;

[0025] Figure 5 This is a front view of an LED display screen provided by an embodiment of the present utility model;

[0026] Figure 6 This is a top view of an LED display screen provided by one embodiment of the present utility model;

[0027] Figure 7 This is a top view of an LED display screen provided by another embodiment of the present invention;

[0028] Figure 8 This is a top view of an LED display screen provided by another embodiment of the present invention.

[0029] The reference numerals in the specification are as follows:

[0030] 1. Housing; 2. Mounting block; 3. Drive assembly; 4. Gear; 5. First rack; 6. Second rack; 7. Arc groove; 8. Locking assembly; 9. Cover; 11. Through groove; 31. Rotating rod; 32. Rotating sleeve; 81. Support seat; 82. Handle; 83. Locking part; 84. Fixed seat; 85. Cam; 86. Elastic member; 87. Guide hole; 88. Guide column; 100. Curvature adjustment mechanism; 200. LED display unit; 300. Box frame; 400. Power control box. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] like Figures 1 to 4 As shown, an embodiment of the present invention provides a curvature adjustment mechanism 100, comprising a housing 1, a mounting block 2, a drive assembly 3, a gear 4, a first arc-shaped rack 5, and a second arc-shaped rack 6. The housing 1 is provided with an arc-shaped groove 7, with both ends of the arc-shaped groove 7 open. The mounting block 2 is slidably connected to the arc-shaped groove 7. The arc-shaped groove 7 has a front side wall and a rear side wall along its radial direction. The mounting block 2 has a curved surface, and the curved surface of the mounting block 2 is in contact with the front side wall of the arc-shaped groove 7.

[0033] The first rack 5 is provided on the rear side wall of the arc-shaped groove 7, and the second rack 6 is provided on the side of the mounting block 2 away from the arc-shaped surface. The first rack 5 and the second rack 6 are arranged at intervals. The gear 4 is located between the first rack 5 and the second rack 6 and meshes with both the first rack 5 and the second rack 6.

[0034] The driving assembly 3 is connected to the gear 4 and is used to drive the gear 4 to rotate so that the housing 1 and the mounting block 2 can move in opposite directions. In this embodiment, an arc groove 7 is provided at one end of the housing 1, and the other end is used to connect to the box frame 300 of the LED display screen; one end of the mounting block 2 is slidably connected to the arc groove 7, and the other end is used to connect to the power control box 400 of the LED display screen. The part of the mounting block 2 used for sliding connection to the arc groove 7 is an arc structure, but the overall structure of the mounting block 2 is not necessarily an arc structure; although the housing 1 is provided with an arc surface, it can be understood that the overall structure of the housing 1 is not necessarily an arc structure. It is only necessary to ensure that the mounting block 2 and the housing 1 move in opposite directions along the arc trajectory at the same time. The direction of the arrow on the housing 1 and the mounting block 2 in the accompanying drawings is the sliding direction of the housing 1 or the mounting block 2, which can slide in the positive direction or the negative direction.

[0035] In one embodiment, the driving assembly 3 includes a rotating rod 31, and the housing 1 is provided with a through slot 11, which is connected to the arc-shaped slot 7, and the extending direction of the through slot 11 is the same as the extending direction of the arc-shaped slot 7;

[0036] Gear 4 is mounted on rotating rod 31, which is slidably connected to through slot 11. In this embodiment, housing 1 and mounting block 2 are provided at both ends of rotating rod 31. Through slot 11 is arc-shaped so that housing 1 does not interfere with through slot 11 when moving along the arc.

[0037] In one embodiment, the curvature adjustment mechanism 100 also includes a locking assembly 8, which is arranged on the rotating rod 31. The locking assembly 8 has a locking state and an unlocking state. When the locking assembly 8 is in the locking state, the locking assembly 8 abuts and locks the shell 1; when the locking assembly 8 is in the unlocking state, the shell 1 can slide relative to the locking assembly 8.

[0038] In one embodiment, the locking assembly 8 includes a support base 81, a handle 82, a locking portion 83, and a fixing base 84. The support base 81 and the fixing base 84 are sleeved on the outer circumference of the rotating rod 31. The housing 1 is slidably connected to the support base 81. The locking portion 83 is provided on the support base 81.

[0039] The handle 82 is provided with a cam 85, which is rotatably mounted on the support base 81. The outer edge of the cam 85 abuts against the fixed base 84. The cam 85 is used to drive the locking assembly 8 to switch between the unlocked state and the locked state. When the locking assembly 8 is in the locked state, the locking portion 83 abuts and locks against the housing 1. In this embodiment, the support base 81 and the fixed base 84 do not rotate with the rotation of the rotating rod 31, and the support base 81 can slide on the rotating rod 31. When the handle 82 rotates the cam 85, different positions of the outer edge of the cam 85 contact the fixed base 84. The distance between the rotational connection between the cam 85 and the support base 81 and the support base 81 varies, thereby allowing the support base 81 to slide up and down along the rotating rod 31. When the support base 81 slides upward, the protrusion abuts and locks against the housing 1, preventing the housing 1 from moving. When the support base 81 slides downward, the protrusion contacts the housing 1 but with less friction, allowing the housing 1 to slide on the support base 81. Specifically, when the handle 82 is turned clockwise to rotate the wheel, the distance from the rotational connection position of the cam 85 and the support seat 81 to the outer edge of the cam 85 gradually increases. The reaction force on the cam 85 causes the support seat 81 to slide upward (away from the fixed seat 84), causing the locking portion 83 to abut against the housing 1, increasing the friction between the locking portion 83 and the housing 1, so that the housing 1 cannot slide relative to the support seat 81, thereby locking the housing 1 and preventing it from moving. When the handle 82 is turned counterclockwise to rotate the cam 85, the distance from the rotational connection position of the cam 85 and the support seat 81 to the outer edge of the cam 85 gradually decreases, and the support seat 81 moves in a direction close to the fixed seat 84, releasing the locking portion 83 from the housing 1, allowing the housing 1 to slide on the support seat 81.

[0040] In one embodiment, the locking assembly 8 further includes an elastic member 86, which is sleeved on the outer circumference of the rotating rod 31;

[0041] A first retaining groove is defined on the end of the support base 81 proximal to the fixed base 84, and a second retaining groove is defined on the end of the fixed base 84 proximal to the support base 81. An elastic member 86 is mounted within both the first and second retaining grooves. In this embodiment, the locking member is a spring, and the provision of the elastic member 86 ensures smooth sliding of the support base 81 on the rotating rod 31. In other embodiments, after the locking assembly 8 is rotated to the desired position, a bolt or other device can be used to secure the cam 85 to the support base 81, preventing it from rotating.

[0042] In one embodiment, a guide post 88 is provided on one end of the fixing seat 84 close to the supporting seat 81 , and a guide hole 87 matching the guide post 88 is provided on the supporting seat 81 , and the guide post 88 is slidably connected in the guide hole 87 .

[0043] In one embodiment, the drive assembly 3 further includes a rotating sleeve 32 for rotating the rotating rod 31. The rotating sleeve 32 is fixedly mounted on the outer circumference of the rotating rod 31. In this embodiment, the rotating sleeve 32 is provided with a serrated structure to increase friction during rotation of the rotating sleeve 32. The rotating sleeve 32 is provided with a protrusion, and the rotating rod 31 is provided with a groove that matches the protrusion. Alternatively, the rotating sleeve 32 is provided with a groove, and the rotating rod 31 is provided with a protrusion, which is inserted into the groove to secure the rotating sleeve 32 to the rotating rod 31. The direction of the arrow near the rotating sleeve 32 in the accompanying drawings indicates the direction of rotation of the rotating sleeve 32, which can rotate in either a positive or negative direction.

[0044] In one embodiment, a marking is provided on the support base 81, and a scale is provided on the housing 1 for indicating the angle of rotation of the housing 1 relative to the marking. In this embodiment, the scale includes multiple angle values, such as 0°, 5°, 10°, 15°, 20°, -5°, -10°, -15°, and 20°. Under normal conditions, and when the gear 4 is not rotating, the 0° position corresponds to the position of the marking. When the gear 4 is rotating, the corresponding angle value can be used to determine the rotation angle of the housing 1, and the rotation angle of the mounting block 2 can also be determined, thereby achieving the desired bending angle of the LED display.

[0045] In one embodiment, a recessed groove is provided at the bottom of the arc groove 7, and the mounting block 2 is slidably connected in the recessed groove. In this embodiment, the recessed groove and the arc groove 7 form a step, which can limit the mounting block 2. The gear 4 is arranged in the arc groove 7 and can be in contact with the bottom of the arc groove 7 or suspended in the arc groove 7. The width of the teeth of the first rack 5 and the second rack 6 is greater than the width of the teeth of the gear 4, so that the gear 4 can engage with the first rack 5 and the second rack 6 at different positions in the arc groove 7. When the gear 4 rotates, the gear 4 will drive the housing 1 and the mounting block 2 to move in opposite directions at the same time. In this embodiment, the curvature adjustment mechanism 100 also includes a cover 9, which covers the housing 1 and can protect the gear 4. At the same time, a hollow structure is provided on the cover 9 to expose the marking position on the support seat 81 and the scale on the housing 1.

[0046] The curvature adjustment mechanism 100 provided by the embodiment of the present invention, when in operation, the driving component 3 drives the gear 4 to rotate, and the gear 4 drives the housing 1 and the mounting block 2 to move simultaneously in opposite directions through the first rack 5 and the second rack 6. The arrangement of the arc groove 7, the arc surface, the arc-shaped first rack 5 and the arc-shaped second rack 6 enables the housing 1 and the mounting block 2 to move along an arc-shaped trajectory. When the present device is applied to an LED display screen, the mounting block 2 is fixedly connected to the power control box 400 of the LED display screen, and the housing 1 is fixedly connected to the box frame 300 of the LED display screen, so that the LED display screen is bent under force to form a curved screen structure. At the same time, compared with the traditional curved screen structure formed by splicing multiple screen bodies, the curved screen structure formed by the present invention is formed by bending a single screen body, so that the obtained curved screen structure is more uniformly curved and has a better display effect.

[0047] In addition, if Figures 5 to 8 As shown, an embodiment of the present invention provides an LED display screen, comprising an LED display unit 200, a box frame 300, a power control box 400, and the curvature adjustment mechanism 100 of the above embodiment. The LED display unit 200 is mounted on the box frame 300, the power control box 400 is fixedly mounted on the LED display unit 200, and the curvature adjustment mechanism 100 is connected between the box frame 300 and the power control box 400. In this embodiment, two curvature adjustment mechanisms 100 are provided on the LED display screen. The curvature adjustment mechanisms 100 are provided with screw holes, and are fixedly connected to the box frame 300 and the power control box 400 by bolts, so that the curved surface effect of the LED display screen can be better adjusted. The box frame 300 is a vertical bar structure, and the box frames 300 are provided at both outer ends of the LED display unit 200.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A radian adjustment mechanism, characterized in that: The invention comprises a housing, a mounting block, a drive assembly, a gear, a first arc-shaped rack, and a second arc-shaped rack. The housing is provided with an arc-shaped groove with two ends open. The mounting block is slidably connected to the arc-shaped groove. The arc-shaped groove has a front side wall and a rear side wall along its radial direction. The mounting block has an arc-shaped surface. The arc-shaped surface of the mounting block is in contact with the front side wall of the arc-shaped groove. The first rack is provided on the rear side wall of the arc-shaped groove, and the second rack is provided on the side of the mounting block away from the arc-shaped surface. The first rack and the second rack are arranged in parallel and spaced apart. The gear is located between the first rack and the second rack and meshes with both the first rack and the second rack. The driving assembly is connected to the gear and is used to drive the gear to rotate so that the housing and the mounting block can move in opposite directions.

2. The radian adjustment mechanism according to claim 1, characterized in that: The driving assembly includes a rotating rod, the housing is provided with a through slot, the through slot is connected to the arcuate slot, and the extending direction of the through slot is the same as the extending direction of the arcuate slot; The gear is mounted on the rotating rod, and the rotating rod is slidably connected in the through slot.

3. The radian adjustment mechanism according to claim 2, characterized in that: The curvature adjustment mechanism also includes a locking assembly, which is arranged on the rotating rod. The locking assembly has a locking state and an unlocking state. When the locking assembly is in the locking state, the locking assembly abuts and locks the shell; when the locking assembly is in the unlocking state, the shell can slide relative to the locking assembly.

4. The arc adjustment mechanism according to claim 3, characterized in that: The locking assembly includes a support seat, a handle, a locking portion and a fixed seat, wherein the support seat and the fixed seat are sleeved on the outer circumference of the rotating rod, the housing is slidably connected to the support seat, and the locking portion is provided on the support seat; A cam is provided on the handle, and the cam is rotatably mounted on the support seat. The outer edge of the cam abuts against the fixed seat. The cam is used to drive the locking assembly to switch between an unlocked state and a locked state. When the locking assembly is in the locked state, the locking portion abuts against the shell and locks.

5. The arc adjustment mechanism according to claim 4, characterized in that: The locking assembly further comprises an elastic member, which is sleeved on the outer circumference of the rotating rod; The support base is provided with a first limiting groove at one end close to the fixing base, and the fixing base is provided with a second limiting groove at one end close to the support base. The elastic member is installed in the first limiting groove and the second limiting groove.

6. The arc adjustment mechanism according to claim 4, characterized in that: A guide column is provided on one end of the fixing seat close to the supporting seat, and a guide hole matching the guide column is provided on the supporting seat, and the guide column is slidably connected in the guide hole.

7. The radian adjustment mechanism according to claim 1, characterized in that: The driving assembly further includes a rotating sleeve for rotating the rotating rod, and the rotating sleeve is fixedly sleeved on the outer circumference of the rotating rod.

8. The arc adjustment mechanism according to claim 4, characterized in that: The support seat is provided with a marking position, and the shell is provided with a scale for displaying the angle of rotation of the shell relative to the marking position.

9. The arc adjustment mechanism according to claim 1, characterized in that: A sink groove is provided at the bottom of the arc-shaped groove, and the mounting block is slidably connected in the sink groove.

10. An LED display screen, characterized in that: It includes an LED display unit, a box frame, a power control box and the curvature adjustment mechanism described in any one of claims 1 to 9, the LED display unit is installed on the box frame, the power control box is fixed on the LED display unit, and the curvature adjustment mechanism is connected between the box frame and the power control box.

Images