Louver connecting lock for LED display screen and LED display screen

Abstract

The invention relates to a shutter connecting lock for an LED display screen and the LED display screen, the connecting lock comprises a shifting limiting piece and a base which are rotationally connected, the shifting limiting piece is provided with a shifting key and a shifting rod and is provided with an L-shaped limiting groove, the base is connected with a rebound assembly, the rebound assembly comprises a rebound key, a spring and a bolt, one end of the bolt is connected to the rebound key, and the other end of the bolt is connected to the shifting rod. The L-shaped limiting groove comprises a limiting part A and a limiting part B. In the initial state, the plug pin is located in the limiting part A. When the shifting key is pressed downwards, the shifting rod shifts, the plug pin moves into the limiting part B for locking, when the springback key is pressed downwards, the shifting limiting piece resets, the plug pin is located in the limiting part A for locking, and when the springback key is pressed downwards, the plug pin moves into the limiting part B for locking. The LED display screen is provided with the connecting lock structure, the LED display screen is provided with a blind window assembly, the deflector rod is connected with the blind window assembly, a reset spring is arranged at the end of the blind window assembly, and the blind window assembly achieves one-key type movable locking and resetting under the cooperation of the connecting lock and the reset spring.

Description

Technical Field

[0001] The invention relates to the technical field of LED display screens, and in particular to a blind connection lock for an LED display screen and an LED display screen. Background Art

[0002] Outdoor display screens are usually made of multiple LED display screen modules. In particular, the spliced ​​screens used in large-scale activities are of huge specifications. When used outdoors, in order to cope with wind resistance, the display screen will have a through slot to reduce wind resistance and ensure safe use. The through slot can achieve a certain heat dissipation effect, but the structural design of the through slot has a greater impact on the display effect of the display screen. When the display screen with a through slot is used indoors, there is no need to consider the problem of wind resistance, but the impact of the through slot on the display effect cannot be eliminated. Therefore, an adjustable shutter structure is generally set on the display screen to block the through slot. The shutter can effectively adjust the brightness and contrast of the display screen so that it can maintain the best display effect under different lighting conditions. By adjusting the opening degree of the shutter, the amount of light entering the display screen can be controlled, thereby optimizing the display effect. When used outdoors, in windless or breezy weather, the shutter can also protect the display screen to prevent overexposure or reflection of the display screen under strong sunlight, thereby extending the service life of the display screen. At the same time, the shutter can also reduce the intrusion of dust and impurities, keep the display screen clean, etc.

[0003] The existing shutter locking structures on display screens require multiple control actions to be implemented, such as pushing a handle to unlock and then manually pushing a sliding connector to move the shutter structure so that the shutter blocks the through slot on the display screen. The operation is relatively cumbersome and it is impossible to move and / or reset the shutter in one click. Therefore, there is an urgent need for a locking structure that can lock and reset the shutter in one click and be applied to the LED display screen to make its operation simple, fast and stable. Summary of the invention

[0004] Based on this, in order to overcome the shortcomings of the prior art, the present invention provides a blinds connection lock and an LED display screen for an LED display screen. Through the set connection lock structure, the blinds can be locked and reset with one-touch movement, the operation is simple and fast, and the structural design is stable.

[0005] The technical solution adopted by the lock to solve the technical problem of the present invention is as follows: a blind connection lock for an LED display screen is provided, including a base, a toggle limiter, a rebound assembly and a cover plate. A connecting shaft is arranged on the left side of the base, an assembly groove is arranged on the right side of the base, a waist hole is also arranged on the base, the waist hole passes through the wall surface of the base and is connected to the assembly groove, a connecting hole is arranged on the toggle limiter, the connecting shaft is plugged and rotatably matched with the connecting hole, the toggle limiter is an inverted L-shaped structure, the downward extension part of which is a toggle rod, and the lateral extension part of which is a toggle button, and the toggle limiter is equivalent to a connecting shaft. The lever with the axis as the fulcrum makes the pressing process of the toggle button more labor-saving. An L-shaped limit groove is provided on the right side wall of the toggle limit piece. The inner wall corners of the L-shaped limit groove are set as arc transition chamfer structures. The ends of the L-shaped limit groove are respectively limit part A and limit part B. The rebound assembly includes a rebound button, a spring and a pin. A spring is provided at the bottom of the rebound button, and the bottom of the spring is abutted against the bottom of the assembly groove. A plug-in hole is provided on the wall of the rebound button. The right end of the pin passes through the waist hole and is plugged into the plug-in hole. The left end of the pin is placed in the L-shaped limit groove, and the cover plate is fixedly connected to the left side of the base.

[0006] The latch can move up and down in the waist hole, and the latch is a movable part and can rotate relative to the plug hole, thereby reducing the stress on the latch during the relative movement.

[0007] When the connecting lock is in use, in the initial state, the latch is located at the limit part A. The toggle button is pressed down to rotate the toggle limit part relative to the connecting shaft. At this time, the end of the toggle rod is displaced. In actual use, the end of the toggle rod can be connected to the shutter assembly. In this way, the displacement of the toggle rod can drive the movement of the shutter assembly, thereby realizing the adjustment function of the shutter assembly on the display effect of the LED display screen. In the process of pressing the toggle button, the latch moves in the direction of the limit part B of the L-shaped limit groove under the action of the spring. When the latch moves relatively to the corner of the L-shaped limit groove, the L-shaped limit groove completely releases the limit of the upper end of the latch, and driven by the upward elastic force of the spring, it quickly moves to the limit part B. And it maintains the locked state under the action of the spring force, achieving the one-touch locking purpose, and the operation is simple and quick; when the locked state needs to be released and reset, it only needs to press the rebound button, the rebound button compresses the spring, and drives the bolt to move downward, so that the bolt moves in the direction of the limit part A, and squeezes the wall of the L-shaped limit groove in the process of moving the bolt downward, driving the toggle limit piece to rotate and reset, and when the bolt moves to the corner position of the L-shaped limit groove, the L-shaped limit groove completely releases its restriction in the direction of the limit part A. At this time, it only needs to apply an external force on the toggle rod to make it completely reset, that is, the toggle limit piece is completely reset, causing the bolt to reset to the limit part A, achieving the purpose of resetting the blinds with one button.

[0008] Furthermore, a limit block for limiting the lever is provided on the left side of the base.

[0009] The present invention also provides an LED display screen, including the above-mentioned shutter connection lock and a frame, wherein an LED light board and a central control module are arranged on the frame, the central control module includes a control system and a power supply system, the LED light board is connected to the central control module by telecommunication, a vertical beam is arranged on the frame, a through hole is opened on the vertical beam, the shutter connection lock is fixed above the vertical beam, a shutter assembly is connected below the vertical beam, a slide groove is opened at the bottom of the vertical beam, the shutter assembly includes a slide rod, a shutter and a reset spring, the slide rod is fixedly connected to the shutter, the slide rod is placed in the slide groove, one end of the reset spring abuts against the inner wall of the slide groove, and the other end abuts against the end of the slide rod, a lever groove is opened on the slide rod, and the lever passes through the through hole and is inserted into the lever groove.

[0010] By pressing the toggle button, the toggle rod moves, the toggle rod drives the shutter assembly to move, and the end of the slide rod compresses the reset spring to achieve functions such as adjustment of the display effect of the LED display screen. When the rebound button is pressed down to reset the toggle limiter, the reset spring provides elastic force to assist in resetting, pushes the slide rod to move, and the slide rod drives the toggle rod to reset.

[0011] Furthermore, a first avoidance hole is opened on the sliding rod, and a screw is passed through the first avoidance hole to connect the shutter assembly to the bottom of the vertical beam. The diameter of the first avoidance hole is larger than the outer diameter of the screw rod to provide moving space for the shutter assembly, that is, the shutter assembly can move within a certain distance range without being restricted by the screw rod.

[0012] Furthermore, a protruding abutment block is provided in the slide groove, and the abutment block abuts against the slide rod to reduce the contact area between the slide rod and the inside of the slide groove, thereby reducing the friction force experienced by the slide rod during the sliding process.

[0013] Furthermore, a grid plate is arranged below the shutter assembly, and a through groove and abutment are arranged on the grid plate. The LED light board is connected to the grid plate, a screw hole is opened in the middle of the abutment, and a second avoidance hole is opened on the shutter. The abutment is inserted into the second avoidance hole. The hole diameter of the second avoidance hole is larger than the outer diameter of the abutment. A connecting column protruding from the slide groove is provided in the slide groove below the vertical beam. The connecting column is inserted into the first avoidance hole opened on the slide rod. The inner diameter of the first avoidance hole is larger than the outer diameter of the connecting column. The grid plate is fixed to the connecting column by screws passing through the abutment.

[0014] Furthermore, limit members are provided on both sides of the grid plate, and the two sides of the shutter are limited by the limit members. The shutter moves under the limit members, which can effectively prevent the shutter from warping and deformation, and prevent the shutter from getting stuck during movement.

[0015] Beneficial effects of the present invention: The shutter connection lock provided by the present invention has a toggle limit piece and a rotational connection with the base. The movement of the toggle rod is achieved by pressing down on the toggle button. The movement of the toggle rod can drive the displacement of the part to be moved, such as the shutter assembly. With the cooperation of the L-shaped limit groove, the latch and the spring, the latch is locked in the limit part B, thereby realizing the one-touch locking function of the toggle limit piece, that is, the lever can be locked and kept motionless after moving to a certain distance. When the rebound button is pressed down, the toggle limit piece can be reset by cooperating with the latch and the L-shaped limit groove, and assisted by an external force applied to the lever to reset it. The latch is locked in the limit part A, thereby realizing the one-touch reset function.

[0016] The LED display screen provided by the present invention drives the movement of the lever by controlling the downward pressing of the toggle button, the lever drives the movement of the shutter assembly, the slide bar compresses the reset spring, and the shutter assembly blocks the through groove on the grid plate to adjust the display effect of the LED display screen, etc. During the downward pressing of the toggle button, the latch moves from the limit portion A to the limit portion B, the toggle limit piece is locked, and the one-button movement locking function of the shutter assembly is realized; when the rebound button is pressed, the latch moves downward, the toggle limit piece rotates and resets, the reset spring pushes the shutter assembly to reset under the action of the restoring elastic force, and the shutter assembly drives the lever to reset, and after the toggle limit piece is completely reset, the latch is locked in the limit portion A, and the one-button reset function of the shutter assembly is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the connection lock structure of the present invention; Figure 2 The connection lock explosion of the present invention Figure 1 ; Figure 3 The connection lock explosion of the present invention Figure 2 ; Figure 4 It is a state diagram of the connection lock of the present invention; Figure 5 This is a schematic diagram of the structure of the LED display screen of the present invention; Figure 6 An exploded view of the LED display screen of the present invention; Figure 7 This is a schematic diagram of the structure of the shutter assembly in the present invention; Figure 8 This is a schematic diagram of the structure of the shutter in the present invention; Fig. 9 It is a schematic diagram of the grid plate structure in the present invention; Fig.10 This is a schematic diagram of the connection between the blinds and the grid plate in the present invention; Fig.11 It is a schematic diagram of the structure of the sliding rod and the frame in the present invention; Fig.12 for Fig.11 Enlarged view of middle part B; Fig.13 for Fig.11 Enlarged view of part C in the middle.

[0018] in: 1. Base; 11. Connecting shaft; 12. Limit block; 13. Waist hole; 14. Assembly groove; 2. Move the limiter; 21. Toggle button; 22. Connecting hole; 23. Toggle lever; 24. L-shaped limit groove; 25. Limiting part A; 26. Limiting part B; 3. Rebound component; 31. Rebound button; 32. Spring; 33. Latch; 4. Cover plate; 5. Shutter assembly; 51, sliding rod; 511, first avoidance hole; 512, lever slot; 52, shutter; 521, second avoidance hole; 53, return spring; 6. Frame; 61, vertical beam; 611, slide groove; 612, abutment block; 613, through hole; 7. Grid plate; 71. Through groove; 72. Abutment member; 73. Limiting member. DETAILED DESCRIPTION

[0019] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] like Figures 1 to 3As shown, the present invention provides a shutter connection lock for an LED display screen, including a base 1, a toggle limiter 2, a rebound assembly 3 and a cover plate 4. A connecting shaft 11 is arranged on the left side of the base 1, and an assembly groove 14 is arranged on the right side of the base 1. A waist hole 13 is also provided on the base 1, and the waist hole 13 passes through the base wall surface and is connected to the assembly groove 14. The toggle limiter 2 is provided with a connecting hole 22, and the connecting shaft 11 is plugged and rotatably matched with the connecting hole 22. The toggle limiter 2 is an inverted L-shaped structure, and its downward extension is a toggle rod 23, and its lateral extension is a toggle button 21. The toggle limiter 2 is equivalent to a lever with the axis of the connecting shaft 11 as the fulcrum, so that The pressing process of the toggle button 21 is more labor-saving. An L-shaped limit groove 24 is provided on the right side wall of the toggle limit piece 2. The inner wall corners of the L-shaped limit groove 24 are all set to a circular arc transition chamfer structure. The ends of the L-shaped limit groove 24 are respectively a limit part A25 and a limit part B26. The rebound component 3 includes a rebound button 31, a spring 32 and a pin 33. A spring 32 is provided at the bottom of the rebound button 31, and the bottom of the spring 32 is abutted against the bottom of the assembly groove 14. A plug-in hole is provided on the wall of the rebound button 31. The right end of the pin 33 passes through the waist hole 13 and is plugged into the plug-in hole. The left end of the pin 33 is placed in the L-shaped limit groove 24, and the cover plate 4 is fixedly connected to the left side of the base 1.

[0023] The latch pin 22 can move up and down in the waist hole 13, and the latch pin 33 is a movable part and can rotate relative to the plug hole, thereby reducing the stress on the latch pin 33 during the relative movement.

[0024] like Figure 4 As shown, when the connecting lock is in use, in the initial state, the latch 33 is located at the limit portion A25, and the toggle button 21 is pressed down to rotate the toggle limit piece 2 relative to the connecting shaft 11. At this time, the end of the toggle rod 23 is displaced. In actual use, the end of the toggle rod 23 can be connected to the shutter assembly 5. In this way, the displacement of the toggle rod 23 can drive the movement of the shutter assembly 5, thereby realizing the adjustment function of the shutter assembly 5 on the display effect of the LED display screen. In the process of pressing the toggle button 21, the latch 33 moves in the direction of the limit portion B26 of the L-shaped limit groove 24 under the action of the spring 32. When the latch 33 moves relatively to the corner of the L-shaped limit groove 24, the L-shaped limit groove 24 completely releases the limit of the upper end of the latch 33, and is driven by the upward elastic force of the spring 32 to quickly move to the limit portion B26, and remains in a locked state under the elastic force of the spring 32. Figure 4The state shown by the dotted line in the middle realizes the one-touch locking purpose, and the operation is simple and fast. When the locked state needs to be released and reset, it is only necessary to press the rebound button 31 downward, the rebound button 31 compresses the spring 32, and drives the latch 33 to move downward, so that the latch 33 moves in the direction of the limit portion A25. In the process of the latch 33 moving downward, the wall surface of the L-shaped limit groove 24 is squeezed, and the toggle limit member 2 is driven to rotate and reset. When the latch 33 moves to the corner position of the L-shaped limit groove 24, the L-shaped limit groove 24 completely releases its restriction in the direction of the limit portion A25. At this time, it is only necessary to apply an external force on the toggle rod 23 to make it completely reset, so that the toggle limit member 2 can be completely reset, causing the latch 33 to reset to the limit portion A25. Figure 4 The state shown by the solid line in the middle portion realizes the purpose of resetting the shutter assembly 5 with one button.

[0025] In some embodiments, a limiting block 12 for limiting the lever 23 is further provided on the left side of the base 1 .

[0026] like Figures 5 to 13 As shown, the present invention also provides an LED display screen, including the above-mentioned shutter connection lock and a frame 6, wherein an LED light board and a central control module are arranged on the frame 6, the central control module includes a control system and a power supply system, the LED light board is connected to the central control module by telecommunication, a vertical beam 61 is arranged on the frame 6, and a through hole 613 is opened in the vertical beam 61, the shutter connection lock is fixed above the vertical beam 61, and a shutter assembly 5 is connected below the vertical beam 61, and a slide groove 611 is opened at the bottom of the vertical beam 61, the shutter assembly 5 includes a slide rod 51, a shutter 52 and a reset spring 53, the slide rod 51 is fixedly connected to the shutter 52, the slide rod 51 is placed in the slide groove 611, one end of the reset spring 53 abuts against the inner wall of the slide groove 611, and the other end abuts against the end of the slide rod 51, and a lever groove 512 is opened on the slide rod 51, and the lever 23 passes through the through hole 613 and is inserted into the lever groove 512.

[0027] By pressing the toggle button 21, the toggle rod 23 moves, the toggle rod 23 drives the shutter assembly 5 to move, and the end of the slide rod 51 compresses the reset spring 53 to achieve functions such as adjustment of the display effect of the LED display screen. When the rebound button 31 is pressed down to reset the toggle limiter 2, the reset spring 53 provides elastic force to assist in resetting, pushes the slide rod 51 to move, and the slide rod 51 drives the toggle rod 23 to reset.

[0028] In some embodiments, a first avoidance hole 511 is opened on the sliding rod 51, and the shutter assembly 5 is connected to the bottom of the vertical beam 61 by using a screw passing through the first avoidance hole 511. The aperture of the first avoidance hole 511 is larger than the outer diameter of the screw rod to provide movement space for the shutter assembly 5, that is, the shutter assembly 5 can move within a certain distance range without being restricted by the screw rod.

[0029] In some embodiments, a protruding abutment block 612 is provided in the slide groove 611 , and the abutment block 612 abuts against the slide bar 51 to reduce the contact area between the slide bar 51 and the inside of the slide groove 611 , thereby reducing the friction force on the slide bar 51 during the sliding process.

[0030] In some embodiments, a grid plate 7 is provided below the shutter assembly 5, and a through groove 71 and abutment 72 are provided on the grid plate 7, the LED light board is connected to the grid plate 7, a screw hole is provided in the middle of the abutment 72, a second avoidance hole 521 is provided on the shutter 52, the abutment 72 is inserted into the second avoidance hole 521, a connecting column protruding from the slide groove 611 is provided in the slide groove 611 below the vertical beam 61, the connecting column is inserted into the first avoidance hole 511 provided on the slide rod 51, and the grid plate 7 is fixed to the connecting column by passing a screw through the abutment 72. Similarly, the aperture of the second avoidance hole 521 is larger than the outer diameter of the abutment 72, and the inner diameter of the first avoidance hole 511 is larger than the outer diameter of the connecting column, so as to provide a moving space for the shutter assembly 5, that is, the shutter assembly 5 can move within a certain distance range without being restricted by the abutment 72 and the connecting column.

[0031] In some embodiments, limit members 73 are further provided on both sides of the grid plate 7. The two side edges of the shutter 52 are limited by the limit members 73. The shutter 52 moves under the limit members 73, which can effectively prevent the shutter 52 from warping and deformation, and prevent the shutter 52 from getting stuck during movement. The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A blinds connection lock for LED display screen, characterized in that: The invention comprises a base (1), a toggle stopper (2), a rebound assembly (3) and a cover plate (4); a connecting shaft (11) is arranged on the left side of the base (1); a mounting groove (14) is arranged on the right side of the base (1); a waist hole (13) is provided on the base (1); the waist hole (13) penetrates the wall surface of the base (1) and is connected to the mounting groove (14); a connecting hole (22) is provided on the toggle stopper (22); the connecting shaft (11) and the connecting hole (22) are plugged and rotatably matched; the toggle stopper (2) is an inverted L-shaped structure; a downwardly extending portion thereof is a toggle lever (23); a lateral extending portion thereof is a toggle button (21); an L-shaped stopper is provided on the right side wall of the toggle stopper (2). The inner corners of the L-shaped limit groove (24) are all set as arc transition chamfer structures, the ends of the L-shaped limit groove (24) are respectively a limit part A (25) and a limit part B (26), the rebound component (3) comprises a rebound button (31), a spring (32) and a latch (33), the bottom of the rebound button (31) is provided with a spring (32), the bottom of the spring (32) is against the bottom of the assembly groove (14), the wall surface of the rebound button (31) is provided with a plug hole, the right end of the latch (33) passes through the waist hole (13) and is plugged into the plug hole, the left end of the latch (33) is placed in the L-shaped limit groove (24), and the cover plate (4) is fixedly connected to the left side of the base.

2. The blinds connection lock for LED display screen according to claim 1, characterized in that: A limit block (12) for limiting the position of the lever (23) is also provided on the left side of the base (1).

3. An LED display screen, comprising the shutter connection lock and frame (6) as claimed in any one of claims 1 to 2, characterized in that: A vertical beam (61) is provided on the frame (6), and a through hole (613) is provided on the vertical beam (61). A shutter connection lock is fixed on the top of the vertical beam (61), and a shutter assembly (5) is connected to the bottom of the vertical beam (61). A sliding groove (611) is provided at the bottom of the vertical beam (61). The shutter assembly (5) comprises a slide rod (51), a shutter (52) and a return spring (53). The slide rod (51) is fixedly connected to the shutter (52), and the slide rod (51) is placed in the sliding groove (611). One end of the return spring (53) abuts against the inner wall of the sliding groove (611), and the other end abuts against the end of the slide rod (51). A lever groove (512) is provided on the slide rod (51), and the lever (23) passes through the through hole (613) and is inserted into the lever groove (512).

4. The LED display screen according to claim 3, characterized in that: A first avoidance hole (511) is provided on the sliding rod (51), and a screw is passed through the first avoidance hole (511) to connect the shutter assembly (5) below the vertical beam (61). The diameter of the first avoidance hole (511) is larger than the outer diameter of the screw rod, so as to provide movement space for the shutter assembly (5).

5. The LED display screen according to claim 3, characterized in that: A protruding abutment block (612) is provided in the slide groove (611), and the abutment block (612) abuts against the slide rod (51).

6. The LED display screen according to claim 3, characterized in that: A grid plate (7) is arranged below the shutter assembly (5), the grid plate (7) is provided with a through groove (71) and abutment (72), a screw hole is opened in the middle of the abutment (72), a second avoidance hole (521) is opened on the shutter (52), the abutment (72) is inserted into the second avoidance hole (521), the hole diameter of the second avoidance hole (521) is larger than the outer diameter of the abutment (72), a connecting column protruding from the sliding groove (611) is arranged in the sliding groove (611) below the vertical beam (61), the connecting column is inserted into the first avoidance hole (511) opened on the slide rod (51), the inner diameter of the first avoidance hole (511) is larger than the outer diameter of the connecting column, and a screw is passed through the abutment (72) to fix the grid plate (7) on the connecting column.

7. The LED display screen according to claim 3, characterized in that: Limiting members (73) are also provided on both sides of the grid plate (7), and both side edges of the shutter (52) are limited by the limiting members (73).

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