Waterproof structure of liquid crystal display screen

Abstract

The utility model relates to the technical field of liquid crystal display screens, and discloses a waterproof structure of a liquid crystal display screen, which comprises an outer shell and positioning grooves, a front cover plate is additionally arranged on the front surface of the outer shell, and positioning plates are additionally arranged on two sides of the back surface of the front cover plate and correspond to the positioning grooves; the telescopic rods are rotationally connected with the front cover plate, the telescopic ends of the telescopic rods are connected with front connecting cylinders, and limiting grooves are formed in the tops of the front connecting cylinders; and the rear connecting cylinder is connected with the outer shell, a limiting head is installed at the top of the rear connecting cylinder and corresponds to the limiting groove, and an extrusion spring is installed in an inner cavity of the rear connecting cylinder. According to the waterproof structure of the liquid crystal display screen, after the positioning plate of the front cover plate is inserted into the positioning groove of the outer shell, the front connecting cylinder can be driven to be connected with the rear connecting cylinder along the telescopic rod, the limiting groove is connected with the limiting head, the end of the extrusion spring is attached to the inner cavity of the rear connecting cylinder, and by adopting the mode, friction of a circuit is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display screens, in particular to a waterproof structure of a liquid crystal display screen. Background Art

[0002] Liquid crystal display (LCD) is a type of flat panel display, mainly used for screen display of televisions and computers. Its advantages include low power consumption, small size, and low radiation. The LCD screen uses a liquid crystal solution in two polarized materials, and changes the arrangement of molecules inside the liquid crystal material through voltage to achieve the purpose of shading and light transmission, thereby displaying images of varying depths and staggered patterns. If a three-primary color filter layer is added, color images can be displayed. In order to ensure the normal use and operation of the LCD screen in a humid environment, a waterproof structure is required.

[0003] The common waterproof structure of LCD screens is usually composed of sealing design, waterproof coating, waterproof interface, connector, waterproof circuit board and waterproof shell. The waterproof shell is set on the outside of the LCD screen, and connected to the corresponding circuit through waterproof interface and connector, and waterproof effect is achieved through sealing design, waterproof coating and waterproof circuit board. This is the common waterproof structure and usage of LCD screens. The traditional waterproof structure of LCD screens installs the LCD screen in a relatively closed box, and installs a glass plate at the position corresponding to the display surface of the box and the LCD screen, and uses bolts to seal and fix, which makes the maintenance process time-consuming and labor-intensive. The waterproof structure of some LCD screens drives the connection block and the hollow moving seat to move when the screw rotates, and then drives the fixed frame, LCD screen and cover plate to move, so that the LCD screen can move out of the waterproof box through the inlet and outlet. However, in this manner, since the circuit is connected to the LCD screen through the holes of the box when the LCD screen is in use, when the LCD screen is moved out of the box, the circuit will be driven to move at the same time. Not only will the circuit limit the moving distance of the LCD screen, making it impossible for the LCD screen to be moved as a whole to the outside of the box, affecting maintenance, but it will also cause friction between the circuit and the box, resulting in a reduction in the service life of the circuit. Therefore, a waterproof structure for the LCD screen is proposed. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides a waterproof structure of a liquid crystal display screen to solve the technical problems that the liquid crystal display screen may not be able to be moved as a whole to the outside of the box and the service life of the circuit is reduced.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waterproof structure of a liquid crystal display screen, comprising:

[0008] An outer shell, and positioning grooves arranged on both sides of the front of the outer shell, and a front cover plate is added to the front of the outer shell, and positioning plates are added to both sides of the back of the front cover plate and correspond to the positioning grooves;

[0009] The telescopic rod is arranged at both sides and the center of the bottom of the front cover plate, and the telescopic rod is rotatably connected to the front cover plate, the telescopic ends of the telescopic rod are connected to the front connecting tube, and the top of the front connecting tube is provided with a limiting groove;

[0010] The rear connecting tube is arranged at both sides and the center of the bottom of the outer shell, and the rear connecting tube is connected to the outer shell. A limiting head is installed on the top of the rear connecting tube, which corresponds to the limiting groove, and the inner cavity of the rear connecting tube is installed with an extrusion spring. After the LCD screen is fixed in the inner cavity of the outer shell, the positioning plate of the front cover is inserted into the positioning groove of the outer shell, and the front connecting tube can be driven along the telescopic rod to connect with the rear connecting tube, and the limiting groove is connected with the limiting head, and the end of the extrusion spring fits with the inner cavity of the rear connecting tube. On the one hand, when the LCD screen is inspected, the outer shell and the front cover can be separated, without moving the LCD screen driving line, and avoiding friction between the line and the outer shell; on the other hand, the front connecting tube is rotated on the telescopic rod to separate from the rear connecting tube, and the front cover is pulled up along the outer shell, so that the positioning plate is separated from the positioning groove, which is convenient for separating the outer shell and the front cover.

[0011] Preferably, a transparent plate is installed at the center of the front face of the front cover, and the transparent plate is designed to be rectangular as a whole. The liquid crystal display screen can be viewed through the transparent plate of the front cover.

[0012] Preferably, the top center of both sides of the outer shell is rotatably connected with a top rotating handle, and both sides of the inner cavity of the outer shell are provided with a first bidirectional screw coaxially connected with the top rotating handle. The top rotating handle drives the first bidirectional screw to rotate at the top of the outer shell and changes the direction of the first bidirectional screw.

[0013] Preferably, the first sliding block is sleeved on the upper and lower parts of the outer surface of the first bidirectional screw, and a U-shaped seat is transversely added at the center of the upper and lower parts of the inner cavity of the outer shell and connected to the first sliding block. The first sliding block can drive the U-shaped seat and its connecting structure to move toward each other according to the direction of the first bidirectional screw.

[0014] Preferably, a side handle is rotatably connected to the upper center of one side of the U-shaped seat, and a second bidirectional screw is added to the upper center of the inner cavity of the U-shaped seat and is coaxially connected to the side handle. The side handle drives the second bidirectional screw to rotate on the U-shaped seat and changes the direction of the second bidirectional screw.

[0015] Preferably, the second sliders are sleeved on both sides of the outer surface of the second bidirectional lead screw and fit with the U-shaped seat, and the corresponding positions of the second sliders are installed with side clamps. The second sliders drive the side clamps to move toward each other according to the turning direction of the second bidirectional lead screw and fit closely with the side edges of the liquid crystal display screen, so that the side clamps can be adjusted and the liquid crystal display screens of different sizes can be clamped and fixed within a certain range.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a waterproof structure of a liquid crystal display screen, which has the following beneficial effects:

[0018] The waterproof structure of the LCD screen is that after the LCD screen is fixed in the inner cavity of the outer shell, the positioning plate of the front cover plate is inserted into the positioning groove of the outer shell, and the front connecting tube can be driven to connect with the rear connecting tube along the telescopic rod, and the limiting groove is connected with the limiting head, and the end of the extrusion spring is fitted with the inner cavity of the rear connecting tube. In this way, on the one hand, when the LCD screen is inspected and repaired, the outer shell and the front cover plate can be separated, without moving the circuit driven by the LCD screen, and avoiding friction between the circuit and the outer shell; on the other hand, the front connecting tube is rotated on the telescopic rod to separate from the rear connecting tube, and the front cover plate is pulled up along the outer shell, so that the positioning plate is separated from the positioning groove, which facilitates the separation of the outer shell and the front cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the separation structure of the front connecting cylinder and the rear connecting cylinder of the utility model;

[0021] Figure 3 This is a schematic diagram of the inner cavity structure of the outer shell of the utility model;

[0022] Figure 4 This is a schematic diagram of the first bidirectional lead screw and its connection structure from the right side of the utility model.

[0023] In the figure: 1. outer shell; 2. positioning groove; 3. front cover; 4. transparent plate; 5. positioning plate; 6. telescopic rod; 7. front connecting cylinder; 8. limiting groove; 9. rear connecting cylinder; 10. limiting head; 11. extrusion spring; 12. top turning handle; 13. first bidirectional screw; 14. U-shaped seat; 15. side turning handle; 16. second bidirectional screw; 17. side clamp. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a technical solution, a waterproof structure of a liquid crystal display screen, including: Figure 1 , an outer shell 1, and positioning grooves 2 are arranged on both sides of the front of the outer shell 1, and a front cover plate 3 is added to the front of the outer shell 1, and positioning plates 5 are added to both sides of the back of the front cover plate 3 and correspond to the positioning grooves 2;

[0026] See also Figure 2 The telescopic rod 6 is arranged at both sides and the center of the bottom of the front cover plate 3, and the telescopic rod 6 is rotatably connected to the front cover plate 3. The telescopic ends of the telescopic rod 6 are connected to the front connecting tube 7, and the top of the front connecting tube 7 is provided with a limiting groove 8;

[0027] The rear connecting tube 9 is arranged on both sides and the center of the bottom of the outer shell 1, and the rear connecting tube 9 is connected to the outer shell 1. A limiting head 10 is installed on the top of the rear connecting tube 9 and corresponds to the limiting groove 8, and an extrusion spring 11 is installed in the inner cavity of the rear connecting tube 9. After the LCD screen is fixed in the inner cavity of the outer shell 1, the positioning plate 5 of the front cover 3 is inserted into the positioning groove 2 of the outer shell 1, and the front connecting tube 7 can be driven along the telescopic rod 6 to connect with the rear connecting tube 9, and the limiting groove 8 can be connected with the limiting head 10, and the end of the extrusion spring 11 fits with the inner cavity of the rear connecting tube 9. On the one hand, when the LCD screen is inspected and repaired, the outer shell 1 and the front cover 3 can be separated, without moving the circuit driven by the LCD screen, and avoiding friction between the circuit and the outer shell 1; on the other hand, the front connecting tube 7 is rotated on the telescopic rod 6 to separate from the rear connecting tube 9, and the front cover 3 is pulled up along the outer shell 1, so that the positioning plate 5 is separated from the positioning groove 2, which facilitates the separation of the outer shell 1 and the front cover 3.

[0028] See also Figure 1 A transparent plate 4 is installed at the center of the front cover plate 3, and the transparent plate 4 is designed as a rectangle. The liquid crystal display screen can be viewed through the transparent plate 4 of the front cover plate 3.

[0029] See also Figure 3 The top rotating handle 12 is rotatably connected to the center positions of both sides of the top of the outer shell 1, and the first bidirectional screw 13 is added to both sides of the inner cavity of the outer shell 1 and is coaxially connected to the top rotating handle 12. The top rotating handle 12 drives the first bidirectional screw 13 to rotate at the top of the outer shell 1 and changes the direction of the first bidirectional screw 13.

[0030] See also Figure 4 The first bidirectional screw 13 is sleeved with a first slider on the upper and lower parts of the outer surface, and a U-shaped seat 14 is transversely provided at the upper and lower center positions of the inner cavity of the outer shell 1 and connected to the first slider. The first slider can drive the U-shaped seat 14 and its connecting structure to move toward each other according to the direction of the first bidirectional screw 13. A side handle 15 is rotatably connected to the upper center position of one side of the U-shaped seat 14, and a second bidirectional screw 16 is provided at the upper center of the inner cavity of the U-shaped seat 14 and coaxially connected to the side handle 15. The side handle 15 drives the second bidirectional screw 16 to rotate on the U-shaped seat 14 and changes the direction of the second bidirectional screw 16. Second sliders are sleeved on both sides of the outer surface of the second bidirectional screw 16 and fit between the U-shaped seat 14, and side clamps 17 are installed at the corresponding positions of the second sliders. The second slider drives the side clamping plates 17 to move toward each other according to the rotation of the second bidirectional lead screw 16, and fits tightly with the side edges of the LCD screen, so that the side clamping plates 17 can be adjusted and LCD screens of different sizes can be clamped and fixed within a certain range.

[0031] This solution: After the LCD screen is fixed in the inner cavity of the outer shell 1, the positioning plate 5 of the front cover plate 3 is inserted into the positioning groove 2 of the outer shell 1, and the front connecting tube 7 can be driven along the telescopic rod 6 to connect with the rear connecting tube 9, and the limiting groove 8 is connected with the limiting head 10, and the end of the extrusion spring 11 is fitted with the inner cavity of the rear connecting tube 9. The top turning handle 12 drives the first bidirectional screw 13 to rotate at the top of the outer shell 1 and changes the direction of the first bidirectional screw 13. The first slider can drive the U-shaped seat 14 and its connecting structure to move toward each other according to the direction of the first bidirectional screw 13. The side turning handle 15 drives the second bidirectional screw 16 on the U-shaped seat 14 to rotate and change the direction of the second bidirectional screw 16. The second slider drives the side clamping plate 17 to move toward each other according to the direction of the second bidirectional screw 16, and fits tightly with the side edge of the LCD screen, so that the side clamping plates 17 can be adjusted, and LCD screens of different sizes can be clamped and fixed within a certain range.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof structure for a liquid crystal display, characterized in that: include: An outer shell (1), and positioning grooves (2) arranged on both sides of the front of the outer shell (1), and a front cover plate (3) is added to the front of the outer shell (1), and positioning plates (5) are added to both sides of the back of the front cover plate (3) and correspond to the positioning grooves (2); The telescopic rod (6) is arranged at both sides and the center of the bottom of the front cover plate (3), and the telescopic rod (6) is rotatably connected to the front cover plate (3). The telescopic ends of the telescopic rod (6) are connected to the front connecting tube (7), and the top of the front connecting tube (7) is provided with a limiting groove (8); The rear connecting tube (9) is arranged on both sides and the center of the bottom of the outer shell (1), and the rear connecting tube (9) is connected to the outer shell (1). A limiting head (10) is installed on the top of the rear connecting tube (9) and corresponds to the limiting groove (8), and an extrusion spring (11) is installed in the inner cavity of the rear connecting tube (9).

2. The waterproof structure of a liquid crystal display according to claim 1, characterized in that: A transparent plate (4) is installed at the center of the front face of the front cover plate (3), and the transparent plate (4) is designed to be rectangular as a whole.

3. The waterproof structure of a liquid crystal display screen according to claim 1, characterized in that: The central positions of both sides of the top of the outer shell (1) are rotatably connected to top rotating handles (12), and first bidirectional lead screws (13) are provided on both sides of the inner cavity of the outer shell (1) and are coaxially connected to the top rotating handles (12).

4. The waterproof structure of a liquid crystal display screen according to claim 3, characterized in that: The upper and lower parts of the outer surface of the first bidirectional lead screw (13) are sleeved with first sliders, and the upper and lower center positions of the inner cavity of the outer shell (1) are transversely provided with U-shaped seats (14) connected to the first sliders.

5. The waterproof structure of a liquid crystal display screen according to claim 4, characterized in that: A side handle (15) is rotatably connected to the upper center of one side of the U-shaped seat (14), and a second bidirectional lead screw (16) is provided at the upper center of the inner cavity of the U-shaped seat (14) and is coaxially connected to the side handle (15).

6. The waterproof structure of a liquid crystal display screen according to claim 5, characterized in that: Second sliding blocks are sleeved on both sides of the outer surface of the second bidirectional lead screw (16) and fit in with the U-shaped seat (14), and side clamping plates (17) are installed at corresponding positions of the second sliding blocks.

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