Device and method for adjusting the gap between the LCD screen and the top plate inside the touch control box

Abstract

A device and method for adjusting the gap between the LCD screen and the top plate inside a touch control box, belonging to the field of rail transit subway systems, are disclosed. The device is fixed inside the touch control box, with the LCD screen positioned below it. Rotating the four hand-locking floating screws clockwise causes the threaded ends of the screws to push the four floating supports downwards until the small foam pads on the bottom of the four protrusions press against the LCD screen. At this point, the four return springs are compressed, completing the fixation of the LCD screen. Rotating the four hand-locking floating screws counterclockwise causes the four floating supports to move upwards under the force of the return springs until the small foam pads on the bottom of the four protrusions detach from the LCD screen. The return springs then return to their original state, and the device can be removed to disassemble the LCD screen. The uniform compression force of the four small foam pads ensures an equal gap between the LCD screen and the top plate, guaranteeing a secure fit at every corner.

Description

Technical Field

[0001] This invention relates to a device and method for adjusting the gap between the LCD screen and the top plate inside a touch control box, belonging to the field of rail transit subway systems. Background Technology

[0002] In the field of touch control units for rail transit subway systems, the LCD screen of the touch control unit needs to be placed inside the touch control box and securely fixed. Typically, a top plate is used to directly press against the back of the LCD screen. However, due to manufacturing tolerances, the top plate surface cannot be perfectly flush after being fixed. Therefore, relying solely on the top plate surface to press against the back of the LCD screen cannot achieve a perfect fit at all four corners. This results in a possible gap at one corner of the LCD screen, causing the screen to become loose, which not only affects work efficiency but also makes it impossible to control assembly quality. Summary of the Invention

[0003] In view of the problem that the clamping of the LCD screen is difficult to control in the existing technology, the present invention provides a device and method for adjusting the gap between the LCD screen and the top plate in the touch control box. By uniformly compressing four small foams, the gap between the LCD screen and the top plate is made equal, so that every corner can be tightened, and the LCD screen is finally stabilized. The structure is simple, fast, and avoids the cost of repeated trial and error.

[0004] The technical solution of this invention is: a device for adjusting the gap between the LCD screen and the top plate inside a touch control box, comprising an LCD screen and a touch control box; the device includes a top plate, floating brackets, return springs, stop posts, hand-locking floating screws, small foam, crossbeams, and positioning screws; a stop post is provided on each side of the four adjustment holes of the top plate, and a floating bracket is provided on each pair of stop posts; a return spring is provided on the stop post between the two side wings of the four floating brackets and the top plate surface; a small foam is fixed on the protrusion of each floating bracket, and the four small foams extend out of the adjustment holes; the two crossbeams are respectively fixed on two positioning screws at both ends of the top plate, and the threaded tips of the two hand-locking floating screws screwed on each crossbeam correspond to the protrusions of the four floating brackets; the LCD screen is disposed inside the touch control box, and the top plate is disposed on top of the LCD screen, and the top plate is fixed to the touch control box; by adjusting the hand-locking floating screws clockwise or counterclockwise, the floating brackets can move up and down on the two stop posts through the return springs.

[0005] A method for adjusting the gap between the LCD screen and the top plate inside the touch control box is as follows: rotate the four hand-locking floating screws clockwise. The threaded ends of the hand-locking floating screws push the four floating brackets downward until the small foam on the bottom of the four protrusions presses against the LCD screen. The gap between the LCD screen and the top plate is equal. At this time, the four return springs are in a compressed state, thus completing the locking and fixing of the LCD screen.

[0006] Rotate the four hand-locking floating screws counterclockwise. The four floating brackets move upward under the force of the return spring until the small foam on the bottom of the four protrusions detaches from the LCD screen. At this time, the return spring returns to its original state. Remove the device to complete the disassembly of the LCD screen.

[0007] The beneficial effects of this invention are as follows: The entire device uses a simple return spring to stretch and restore itself, and the feed distance of the hand-locking floating screw is used to adjust the gap between the four corners of the LCD screen back. The uniform compression force of four small foams achieves equal gaps between the LCD screen and the top plate, ensuring that each corner is securely fastened, thus stabilizing the LCD screen and quickly solving the problem of the LCD screen's four corners not being able to fit completely. The small foams on the bottom of the floating bracket are pressed and detached from the LCD screen, thereby achieving the fixing and disassembly of the LCD screen. This device is simple, fast, and avoids the cost of repeated trial and error. The overall structure is simple, easy to operate, highly versatile, and cost-controllable. Attached Figure Description

[0008] Figure 1 A schematic diagram illustrating the structure of this invention;

[0009] Figure 2 for Figure 1 Exploded view of the structure;

[0010] Figure 3 for Figure 1 A cross-sectional view (AA) of the locked LCD screen structure.

[0011] Figure 4 for Figure 3 Enlarged view of part B of the structure;

[0012] Figure 5 for Figure 1 A cross-sectional view (AA) of the loosened LCD screen structure.

[0013] Figure 6 for Figure 5 Enlarged view of section C of the structure;

[0014] Figure 7 This is a schematic diagram of the top plate of the present invention;

[0015] Figure 8 This is a schematic diagram of the structure of the floating support of the present invention.

[0016] The components are as follows: 1. Top plate; 1-1. Adjustment hole; 1-2. Positioning screw hole; 1-3. Stop pin hole I; 2. Floating bracket; 2-1. Protrusion; 2-2. Side wing; 2-2-1. Stop pin hole II; 3. Return spring; 4. Stop pin; 5. Hand lock floating screw; 6. Small foam; 7. LCD screen; 8. Crossbeam; 8-1. Screw hole; 8-2. Threaded hole; 9. Positioning screw; 10. Fixing nut; 11. Touch control box; 11-1. Side wall of touch control box. Detailed Implementation

[0017] like Figure 1 , Figure 2 As shown, a device for adjusting the gap between the LCD screen and the top plate inside the touch control box includes a top plate 1, a floating bracket 2, a return spring 3, a stop post 4, a hand-locking floating screw 5, a small foam 6, a crossbeam 8, a positioning screw 9 and a fixing nut 10, an LCD screen 7 and a touch control box 11.

[0018] like Figure 7 As shown, the top plate 1 is a rectangular plate. At the four corners of the top plate 1, there is a positioning screw hole 1-2, an adjustment hole 1-1 and two stop pin holes I1-3 respectively. Each adjustment hole 1-1 is located between the two stop pin holes I1-3, and each positioning screw hole 1-2 is located between the side wall of the top plate 1 and the adjustment hole 1-1.

[0019] like Figure 8 As shown, the overall cross-section of the floating support 2 is U-shaped. The two sides of the floating support 2 are side wings 2-2. A stop post hole II 2-2-1 is provided on each side wing 2-2. A downward convex 2-1 is provided on the U-shaped surface between the two side wings 2-2.

[0020] The small foam 6 is made of black polyurethane foam with a hardness of 30 degrees. The LCD screen 7 is an LCD screen. The stop post 4 is made of mushroom-head nylon nail.

[0021] like Figures 1 to 8As shown, a positioning screw 9 is screwed into each of the four positioning screw holes 1-2 on the top plate 1. A stop post 4 is inserted into each of the stop post holes I1-3 on the bottom surface of the top plate 1. A return spring 3 is fitted onto each of the four stop posts 4. The lower end of each return spring 3 is in contact with the surface of the top plate 1. The four floating brackets 2 are fitted onto the two stop posts 4 on both sides of each adjusting hole 1-1 through the stop post holes II2-2-1 on the two side wings 2-2. The lower ends of the two side wings 2-2 of the four floating brackets 2 are in contact with the upper ends of each return spring 3. The upper ends of the two side wings 2-2 of the four floating brackets 2 are in contact with the lower end face of the mushroom head of each stop post 4. A small bubble is glued and fixed onto the protrusion 2-1 of each of the four floating brackets 2. The cotton 6, four floating brackets 2 protrusions 2-1 and small foam 6 are respectively set in each adjustment hole 1-1. The two crossbeams 8 are respectively fitted onto the two corresponding positioning screws 9 at both ends of the top plate 1 through the screw holes 8-1 on both sides. The two crossbeams 8 are fixed to the surface of the top plate 1 by the cooperation of the fixing nut 10 with the positioning screws 9. A hand-locking floating screw 5 is screwed into the two threaded holes 8-2 on the two crossbeams 8 respectively. The thread tip of each hand-locking floating screw 5 corresponds to the concave surface of the protrusions 2-1 of the four floating brackets 2. The LCD screen 7 is set in the touch control box 11. The top plate 1 is set on the back plate of the LCD screen 7. The two side walls of the top plate 1 are then fixed together with the corresponding side walls 11-1 of the touch control box by screws.

[0022] Adjust the hand lock floating screw 5 clockwise or counterclockwise. The floating bracket 2 can move up and down on the two stop pins 4 through the action of the return spring 3, and drive the small foam 6 to move up and down in the adjustment hole 1-1.

[0023] Example 1: A method for adjusting the gap between the LCD screen and the top plate inside the touch control box is as follows: Rotate the four hand-locking floating screws 5 clockwise in sequence. The threaded tips of the hand-locking floating screws 5 push the four floating brackets 2 downwards until the small foam 6 on the bottom surface of the four protrusions 2-1 presses against the back plate of the LCD screen 7, making the gap between the entire back plate of the LCD screen 7 and the top plate 1 uniform. The adjustment of the hand-locking floating screws 5 is complete. At this time, the four return springs 3 are in a compressed state, completing the fixation of the LCD screen 7. Rotate the four hand-locking floating screws 5 counterclockwise. Due to the reduced feed pressure at the threaded tips of the hand-locking floating screws 5, the four floating brackets 2 move upwards under the elastic force of the return springs 3, causing the small foam 6 on the bottom surface of the four protrusions 2-1 to slowly disengage from the LCD screen 7 until the four hand-locking floating screws 5 are completely disengaged from the threaded holes 8-2. At this time, the return springs 3 return to their original state. Loosen the screws fixing the side walls of the top plate 1 and the side wall 11-1 of the touch control box, remove the device, and the LCD screen 7 can be disassembled.

Claims

1. A device for adjusting the gap between a liquid crystal screen and a top plate inside a touch control box, comprising a liquid crystal screen (7) and a touch control box (11), characterized in that: The device includes a top plate (1), floating brackets (2), return springs (3), stop posts (4), hand-locking floating screws (5), small foam (6), crossbeams (8), and positioning screws (9). A stop post (4) is installed on each side of the four adjustment holes (1-1) of the top plate (1). A floating bracket (2) is installed on each pair of stop posts (4). A return spring (3) is installed on each stop post (4) between the two wings (2-2) of the four floating brackets (2) and the surface of the top plate (1). A small foam (6) is fixed on the protrusion (2-1) of each floating bracket (2). The four small foams (6) are respectively... Extending out of the adjustment hole (1-1); the two crossbeams (8) are respectively fixed on the two positioning screws (9) at both ends of the top plate (1), and the thread tops of the two hand-lock floating screws (5) screwed on each crossbeam (8) correspond to the protrusions (2-1) of the two floating brackets (2); the LCD screen (7) is set inside the touch control box (11), and the top plate (1) is set on the LCD screen (7), and the top plate (1) is fixed to the touch control box (11); the hand-lock floating screws (5) are adjusted clockwise or counterclockwise, and the floating brackets (2) can move up and down on the two stop posts (4) through the return spring (3).

2. The device for adjusting the gap between the LCD screen and the top plate inside the touch control box according to claim 1, characterized in that: The top plate (1) is a rectangular plate. At the four corners of the top plate (1), there is a positioning screw hole (1-2), an adjustment hole (1-1), and two stop pin holes I (1-3). Each adjustment hole (1-1) is located between the two stop pin holes I (1-3), and each positioning screw hole (1-2) is located between the side wall of the top plate (1) and the adjustment hole (1-1).

3. The device for adjusting the gap between the LCD screen and the top plate inside the touch control box according to claim 1, characterized in that: The floating support (2) has a U-shaped cross section. The two sides of the floating support (2) are side wings (2-2). Stop pin holes II (2-2-1) are provided on the two side wings (2-2) respectively. A protrusion (2-1) is provided on the U-shaped surface between the two side wings (2-2).

4. The device for adjusting the gap between the LCD screen and the top plate inside the touch control box according to claim 1, characterized in that: The stop post (4) is made of mushroom-head nylon nail.

5. The device for adjusting the gap between the LCD screen and the top plate inside the touch control box according to claim 1, characterized in that: The small foam (6) is made of polyurethane foam with a hardness of 30 degrees.

6. A method for adjusting the gap between the liquid crystal screen and the top plate inside a touch control box, implemented based on the device for adjusting the gap between the liquid crystal screen and the top plate inside a touch control box as described in claim 1, characterized in that, Operate as follows: Rotate the four hand-locking floating screws (5) clockwise. The threaded ends of the hand-locking floating screws (5) push the four floating brackets (2) downward until the small foam (6) on the bottom surface of the four protrusions (2-1) presses against the LCD screen (7). The gap between the LCD screen (7) and the top plate (1) is equal. At this time, the four return springs (3) are in a compressed state, and the LCD screen (7) is locked and fixed. Rotate the four hand-locking floating screws (5) counterclockwise. The four floating brackets (2) move upward under the elastic force of the return springs (3) until the small foam (6) on the bottom surface of the four protrusions (2-1) disengages from the LCD screen (7). At this time, the return springs (3) return to their original state. Remove the device to complete the disassembly of the LCD screen.

Images