Protection device for liquid crystal display screen

Abstract

The utility model relates to the technical field of display screen protection, and discloses a protection device for a liquid crystal display screen, which comprises a protection box, a fixing assembly is arranged in the protection box, the fixing assembly comprises a driving motor, the output end of the driving motor is fixedly connected with a main rocker arm, and the left end and the right end of the main rocker arm are both rotatably connected with auxiliary rocker arms. The other end of the auxiliary rocker arm is rotationally connected with a moving plate, containing grooves are formed in the side walls of the moving plate, a liquid crystal screen is arranged in the middle of the moving plate, connecting sliding blocks are fixedly connected to the left side and the right side of the bottom of the moving plate, and guide rails are arranged at the bottoms of the connecting sliding blocks. According to the utility model, after the liquid crystal screen is placed in the accommodating grooves at the two sides of the protection box, the driving motor drives the main rocker arm to rotate, and the auxiliary rocker arm is linked to push the movable plate to slide towards the center, so that the side edge of the liquid crystal screen is embedded into the flexible clamping groove, thereby solving the problem of low installation efficiency caused by poor size adaptability of the traditional fixed clamping groove; and the installation safety and the operation convenience are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to display screen protection technical field especially relates to a protection device for liquid crystal display screen. BACKGROUND

[0002] In today's era of rapid development of digital information, liquid crystal display screen as indispensable key components of various electronic equipment, is widely used in computer, TV, mobile phone, tablet computer and various industrial control equipment etc. field. With the continuous improvement of people's demand for display effect, the size of liquid crystal display screen is bigger and bigger, the resolution is higher and higher, and the structure is more and more precise. However, in the production, transportation, installation process, liquid crystal display screen is easily affected by collision, extrusion, scratching and other external force, thereby leading to screen damage, affecting normal use. Once the liquid crystal display screen is damaged, not only will increase the maintenance cost, serious time even will lead to the whole equipment scrap, bring great economic loss to the user. Therefore, it is particularly important to develop a kind of efficient and reliable protection device for liquid crystal display screen.

[0003] In the prior art, the protection mode for liquid crystal display screen mainly adopts the combination of mechanical fixing structure and protective material. The mechanical fixing structure is usually fixed on the equipment shell or support by using clamping groove, buckle and other ways, so as to prevent displacement or shaking of liquid crystal display screen in the transportation process. The protective material is usually made of plastic, rubber and other materials, such as protective sleeve, protective film, etc., which is covered on the surface of the display screen to play a certain buffering and anti-scratching role. In the technical principle, these mechanical fixing structures are mainly based on the principle of friction and mechanical locking to realize the fixation of the display screen. And the protective material is to use its own physical properties, such as softness, elasticity, etc., to buffer and disperse the external impact force, so as to protect the display screen from damage.

[0004] However, there is a more prominent problem in the existing protection mode, that is, the size adaptability of the traditional fixed clamping groove is poor. Because there are differences in size and shape of different models and specifications of liquid crystal display screen, the existing fixed clamping groove can only be used for display screen of specific size, which leads to the need to frequently replace the fixed clamping groove or modify the clamping groove when installing liquid crystal display screen of different sizes, greatly reducing the installation efficiency. Moreover, the traditional rigid fixation method is easy to cause stress damage to the edge of the screen body during installation, which affects the service life and display effect of the display screen, so a protection device for liquid crystal display screen is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] In order to make up for the above shortcomings, the utility model provides a protection device for liquid crystal display screen, which aims at improving the problem of low installation efficiency caused by poor size adaptability of the fixed clamping groove in the prior art.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A protection device for liquid crystal display screen, including protection box, the inside of protection box is provided with fixed component, the fixed component is used for fixing screen to reduce its damage caused by knock;

[0008] The fixed component includes drive motor, the bottom fixed connection of drive motor is in the inside of protection box, the output fixed connection of drive motor has main rocker arm, the left and right two ends of main rocker arm are all rotatably connected with vice rocker arm, the other end of vice rocker arm is rotatably connected with moving plate, the lateral wall of moving plate is all set up and holds groove, the middle of moving plate is provided with liquid crystal screen, the left and right sides outer wall of liquid crystal screen is all slidably connected in the inner wall of holding groove, the left and right sides of moving plate bottom are all fixedly connected with connecting sliding block, the bottom of connecting sliding block is all provided with guide rail, the bottom fixed connection of guide rail is in the bottom of the inner wall of protection box, and the guide rail is located at the left and right sides of drive motor;

[0009] As further description of the above technical scheme:

[0010] The upper surface of the liquid crystal screen is provided with a protection plate, and the bottom of the left and right ends of the protection plate is slidably connected to the outer wall of the moving plate.

[0011] As further description of the above technical scheme:

[0012] A plurality of locking columns are slidably connected between the protection plate and the moving plate, and the locking columns are located on the left and right sides and the upper and lower sides of the protection plate.

[0013] As further description of the above technical scheme:

[0014] A plurality of limiting beads are slidably connected inside the locking column, and the limiting beads are distributed in a circular manner inside the locking column.

[0015] As further description of the above technical scheme:

[0016] The inner wall of the locking column is fixedly connected with a limiting hole plate at the top, and the inner wall of the locking column is slidably connected with a sliding column.

[0017] As further description of the above technical scheme:

[0018] The bottom of the sliding column is provided with a limiting groove, the top of the sliding column is fixedly connected with a connecting column, the top of the connecting column is fixedly connected with a fixed column, and the inside of the fixed column is fixedly connected with an auxiliary handle.

[0019] As further description of the above technical scheme:

[0020] The connecting column outer wall is fixedly connected with a plurality of limiting blocks, and the limiting blocks are distributed in a circumferential shape.

[0021] As a further description of the above technical solution:

[0022] The sliding column top outer wall is sleeved with a limiting spring, one end of the limiting spring is fixedly connected to the locking column inner wall, and the other end of the limiting spring is fixedly connected to the connecting column bottom.

[0023] The utility model has the advantages of the following beneficial effects:

[0024] 1、 the utility model discloses, when using the protection device, liquid crystal screen is placed into the containing groove of protection box both sides, and the main rocker arm is rotated under the drive motor, and the linkage vice rocker arm pushes the sliding plate along the guide rail to the center, and the side of the liquid crystal screen is embedded in the flexible clamping groove, so that the low mounting efficiency problem caused by the poor size adaptability of the traditional fixed clamping groove is solved, rigid clamping stress damage to the corner of the screen body is avoided, and the installation safety and operation convenience are improved.

[0025] 2、 the utility model discloses, the protection plate is placed on the upper surface of liquid crystal screen, and the protection plate and the side wall hole position of the sliding plate are aligned, and the locking column is placed into. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A perspective view of a protection device for a liquid crystal display screen is provided for the utility model;

[0027] Figure 2 A main rocker arm structure schematic view of a protection device for a liquid crystal display screen is provided for the utility model;

[0028] Figure 3 A locking column structure schematic view of a protection device for a liquid crystal display screen is provided for the utility model;

[0029] Figure 4 A Figure 3 An enlarged view of A in the middle.

[0030] LEGEND:

[0031] 1, protection box; 2, protection plate; 3, liquid crystal screen; 4, drive motor; 5, main rocker arm; 6, vice rocker arm; 7, moving plate; 8, containing groove; 9, connecting slider; 10, guide rail; 11, locking column; 12, limiting hole plate; 13, sliding column; 14, limiting groove; 15, limiting bead; 16, connecting column; 17, fixed column; 18, auxiliary handle; 19, limiting spring; 20, limiting block. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Referring to Figure 1 and Figure 2 An embodiment provided by the present application: a protection device for a liquid crystal display screen, comprising a protection box 1, the protection box 1 is made of engineering plastic material, has good pressure resistance and wear resistance, and serves to provide a stable external frame structure for the entire protection device, accommodate various internal parts therein, and protect the internal parts and the liquid crystal screen 3 from external collision and scratching; the protection box 1 is internally provided with a fixing assembly, which is used for fixing the screen to reduce damage caused by bumps.

[0034] The fixed assembly comprises a driving motor 4, which is a direct current motor, and is used to provide power source, and drive the subsequent parts to move through the conversion of electric energy into mechanical energy, so as to realize the fixing operation of the liquid crystal screen 3. The driving motor 4 is fixedly connected to the inside of the protection box 1, and the output end of the driving motor 4 is fixedly connected with a main rocker arm 5 made of aluminum alloy, which has the characteristics of light weight and high strength, and is used to rotate under the driving of the driving motor 4, and is used as the starting transmission component of the movement of the whole fixed assembly, and transmits the rotary movement of the driving motor 4 to a sub rocker arm 6. The left and right ends of the main rocker arm 5 are both rotatably connected with the sub rocker arm 6, which is also made of aluminum alloy, and is used to rotate under the driving of the main rocker arm 5, and transmit the movement to a moving plate 7, change the position of the moving plate 7 through the rotation of the sub rocker arm 6, and realize the clamping action of the liquid crystal screen 3. The other end of the sub rocker arm 6 is rotatably connected with the moving plate 7, which is generally made of engineering plastic, has certain flexibility and strength, and is used to move under the driving of the sub rocker arm 6 through the cooperation of the connecting sliding block 9 and the guide rail 10, so as to clamp and fix the liquid crystal screen 3. The side walls of the moving plate 7 are both provided with accommodating grooves 8 for accommodating the side edges of the liquid crystal screen 3, and the inner walls are filled with flexible materials, which are used for positioning and clamping. The liquid crystal screen 3 is arranged in the middle of the moving plate 7, and the left and right outer walls of the liquid crystal screen 3 are both slidably connected to the inner walls of the accommodating grooves 8. The left and right sides of the bottom of the moving plate 7 are both fixedly connected with connecting sliding blocks 9, which are used to slide in the guide rails 10, ensure the stability and accuracy of the movement of the moving plate 7, and make the moving plate 7 move along the predetermined track. The bottom of the connecting sliding block 9 is provided with a guide rail 10, which is used to provide a guide for the connecting sliding block 9, limit the movement direction of the moving plate 7, and make the moving plate 7 only slide towards the middle or outward along the direction of the guide rail 10. The bottom of the guide rail 10 is fixedly connected to the bottom of the inner wall of the protection box 1, and the guide rail 10 is located on the left and right sides of the driving motor 4. The upper surface of the liquid crystal screen 3 is provided with a protection plate 2 made of transparent high-strength plastic material, which has good impact resistance. The protection plate 2 is used to cover the upper surface of the liquid crystal screen 3, prevent the liquid crystal screen 3 from being scratched, collided and damaged from above, and the left and right ends of the bottom of the protection plate 2 are slidably connected to the outer wall of the moving plate 7.

[0035] Specifically, in use of the protection device, first, the staff places the liquid crystal screen 3 between the accommodating grooves 8 on the left and right sides inside the protection box 1, at this time, the driving motor 4 inside the protection box 1 is powered on and started, the rotor inside the motor starts to rotate under the action of electromagnetic force, drives the output end to rotate, thereby drives the main rocker arm 5 to start to rotate around the output shaft of the driving motor 4, the rotation of the main rocker arm 5 promotes the rotation of the left and right end auxiliary rocker arms 6 with the main rocker arm 5 rotation connecting point as the center, the rotation of the auxiliary rocker arm 6 makes the rotation connecting point on the other end of the auxiliary rocker arm 6 and the moving plate 7 to produce displacement, since the connecting sliding blocks 9 on the bottom of the moving plate 7 on the left and right sides are limited in the guide rail 10, therefore, the moving plate 7 can only slide to the middle along the direction of the guide rail 10 under the limitation of the connecting sliding blocks 9 and the guide rail 10, in the sliding process of the moving plate 7, the accommodating grooves 8 on the inner wall gradually approach the left and right ends of the liquid crystal screen 3, with the continuous sliding of the moving plate 7 to the middle, the left and right ends of the liquid crystal screen 3 slide into the accommodating grooves 8 on the inner wall of the moving plate 7, when the accommodating grooves 8 tightly fit the side edges of the liquid crystal screen 3, thereby the liquid crystal screen 3 is clamped and fastened, so as to achieve the effect of quickly fixing liquid crystal screens 3 of different sizes.

[0036] Referring to Figure 3 and Figure 4A plurality of locking columns 11 are slidably connected between the protection plate 2 and the moving plate 7, the locking columns 11 are made of stainless steel metal material, have high strength and wear resistance, and have the functions of connecting and locking the protection plate 2 and the moving plate 7, ensuring that the protection plate 2 is stably covered on the liquid crystal screen 3, the locking columns 11 are located on the left and right sides and the upper and lower sides of the protection plate 2, which can fix the protection plate 2 from multiple directions and improve the stability of the fixing, a plurality of limiting beads 15 are slidably connected in the locking columns 11, the limiting beads 15 are distributed in a circular manner in the locking columns 11, the limiting beads 15 are made of hard alloy, have high hardness and wear resistance, and have the function of being embedded in the hole in the protection plate 2 when the locking column 11 is connected with the protection plate 2 and the moving plate 7, and the lateral extrusion force is used to fix the position of the protection plate 2 and the moving plate 7, limiting hole plates 12 are fixedly connected to the inner walls of the locking columns 11, the limiting hole plates 12 are made of metal sheet and have certain strength and toughness, which has the functions of limiting and guiding the limiting blocks 20 on the connecting columns 16, ensuring that the limiting blocks 20 move in a specific position and direction, and realizing the functions of locking and unlocking, sliding columns 13 are slidably connected to the inner walls of the locking columns 11, the sliding columns 13 and the locking columns 11 are made of the same material, which has the function of sliding up and down in the locking column 11, driving the limiting beads 15 in the limiting grooves 14 at the bottom to move, thereby realizing the locking and unlocking operation of the protection plate 2, limiting grooves 14 are formed at the bottom of the sliding columns 13, the limiting grooves 14 are used to accommodate the limiting beads 15, and in the movement process of the sliding column 13, the shape and structure of the limiting groove 14 are changed to control the movement direction and position of the limiting bead 15, connecting columns 16 are fixedly connected to the top of the sliding columns 13, the connecting columns 16 are made of metal material and have the functions of connecting the sliding columns 13 and the fixed columns 17, and transmitting the operating force of the auxiliary handle 18 to the sliding column 13, the fixed columns 17 are fixedly connected to the top of the connecting columns 16, the auxiliary handle 18 is fixedly connected to the inside of the fixed column 17, the auxiliary handle 18 is generally made of engineering plastic and is convenient for workers to hold and operate, which has the function of providing a force point for workers, and through the operation of the auxiliary handle 18 by the workers, the fixed column 17, the connecting column 16 and the sliding column 13 and other components are driven to move, thereby realizing the installation and disassembly of the protection plate 2, a plurality of limiting blocks 20 are fixedly connected to the outer wall of the connecting column 16, which has the functions of cooperating with the limiting hole plate 12 during the rotation and displacement of the connecting column 16, and realizing the locking and limiting of different positions, the limiting blocks 20 are distributed in a circular manner, a limiting spring 19 is sleeved on the outer wall of the top of the sliding column 13, which has the functions of being compressed and storing elastic potential energy when the connecting column 16 is displaced downward, and pushing the connecting column 16 upward to reset when unlocking is needed, thereby realizing the resetting and unlocking operation of each component, one end of the limiting spring 19 is fixedly connected to the inner wall of the locking column 11, and the other end of the limiting spring 19 is fixedly connected to the bottom of the connecting column 16;

[0037] Specifically, when the liquid crystal screen 3 is fixed, the staff places the protective plate 2 on the upper surface of the liquid crystal screen 3, aligns the hole positions on the left and right sides of the protective plate 2 with the hole positions on the side wall of the moving plate 7, and then places the locking column 11 in the hole positions. At this time, the staff manually presses the auxiliary handle 18 downward, and the auxiliary handle 18 rotates downward around the connecting point with the fixed column 17. This downward displacement and rotation operation causes the fixed column 17 and the connecting column 16 below it to also displace downward synchronously and rotate around the central axis of the fixed column 17. The rotation and displacement of the connecting column 16 cause the multiple limiting blocks 20 circumferentially distributed on the outer wall of the connecting column 16 to also rotate around the central axis of the connecting column 16 and displace downward along the inner wall of the locking column 11. When the limiting blocks 20 rotate to the same horizontal position and the same angle as the hole positions of the limiting hole plate 12, the connecting column 16 will further displace downward under the continuous force of the staff, so that the limiting blocks 20 pass through the limiting hole plate 12. At this time, the staff rotates the limiting blocks 20 again to change the angle of the limiting blocks 20, so that their position is limited below the limiting hole plate 12, forming a stable locking structure. In the process of downward displacement of the connecting column 16, the limiting spring 19 below the connecting column 16 is compressed under the pressure of the downward displacement of the connecting column 16, and the limiting spring 19 stores elastic potential energy. At the same time, since the connecting column 16 is fixedly connected with the sliding column 13, the downward displacement of the connecting column 16 also causes the sliding column 13 to displace downward. When the sliding column 13 displaces downward, the multiple limiting beads 15 on the inner wall of the limiting groove 14 on the bottom of the sliding column 13 are affected by the change in the shape of the limiting groove 14 and slide outward to the hole positions inside the protective plate 2. At this time, the protective plate 2 and the moving plate 7 are fixed in position due to the lateral extrusion force generated after the limiting beads 15 are embedded in the hole positions of the protective plate 2. In this way, the quick installation of the protective plate 2 is completed, thereby achieving the effect of protecting the panel of the liquid crystal screen 3.

[0038] Working principle: when using the protection device, first, the staff places the liquid crystal screen 3 between the containing grooves 8 on the left and right sides inside the protection box 1, at this time, the drive motor 4 inside the protection box 1 drives the main rocker arm 5 to start rotating, the rotation of the main rocker arm 5 promotes the rotation of the auxiliary rocker arms 6 on the left and right ends thereof, the rotation of the auxiliary rocker arms 6 makes the moving plate 7 on the other end thereof slide to the middle under the limitation of the connecting slide block 9 and the guide rail 10, the sliding of the moving plate 7 makes the left and right ends of the liquid crystal screen 3 slide into the containing grooves 8 on the inner wall of the moving plate 7, so that the liquid crystal screen 3 is clamped and fastened, thereby achieving the effect of quickly fixing liquid crystal screens 3 of different sizes, when the liquid crystal screen 3 is fixed, the staff places the protection plate 2 on the upper surface of the liquid crystal screen 3, at the same time, aligns the hole positions on the left and right sides of the protection plate 2 with the hole positions on the side walls of the moving plate 7, then places the locking column 11 in the hole positions, at this time, the staff presses the auxiliary handle 18 downward manually and rotates, the downward displacement and rotation of the auxiliary handle 18 promote the synchronous displacement and rotation of the fixing column 17 and the connecting column 16 below the fixing column 17, the rotation and displacement of the connecting column 16 make the plurality of limiting blocks 20 on the outer wall thereof rotate and displace downward, when the limiting blocks 20 rotate to the same as the hole positions of the limiting hole plate 12, the connecting column 16 will further displace downward, so that the limiting blocks 20 pass through the limiting hole plate 12, rotating the limiting blocks 20 again can limit the positions of the limiting blocks 20 below the limiting hole plate 12, at this time, the limiting spring 19 below the connecting column 16 is compressed under stress, at the same time, promotes the downward displacement of the sliding column 13, so that the plurality of limiting beads 15 on the inner wall of the limiting groove 14 at the bottom of the sliding column 13 slide outward into the hole positions inside the protection plate 2, at this time, limited by the lateral extrusion force of the limiting beads 15, the positions of the protection plate 2 and the moving plate 7 are fixed, thereby completing the quick installation of the protection plate 2, and achieving the effect of protecting the panel of the liquid crystal screen 3.

[0039] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A protection device for liquid crystal display screens, comprising a protection box (1), characterized in that: The protection box (1) is internally provided with a fixing assembly for fixing the screen to reduce damage caused by bumps; The fixing assembly comprises a driving motor (4) fixedly connected at the bottom of the protection box (1), the output end of the driving motor (4) is fixedly connected with a main rocker arm (5), the left and right ends of the main rocker arm (5) are rotatably connected with a vice rocker arm (6), the other end of the vice rocker arm (6) is rotatably connected with a moving plate (7), the side walls of the moving plate (7) are provided with accommodating grooves (8), the middle of the moving plate (7) is provided with a liquid crystal screen (3), the left and right side walls of the liquid crystal screen (3) are slidably connected to the inner walls of the accommodating grooves (8), the left and right sides of the bottom of the moving plate (7) are fixedly connected with a connecting sliding block (9), the bottom of the connecting sliding block (9) is provided with a guide rail (10), the bottom of the guide rail (10) is fixedly connected to the inner wall of the protection box (1), and the guide rail (10) is located on the left and right sides of the driving motor (4).

2. The protective device for liquid crystal display panel according to claim 1, wherein: The upper surface of the liquid crystal screen (3) is provided with a protection plate (2), and the bottom of the left and right ends of the protection plate (2) is slidably connected to the outer wall of the moving plate (7).

3. A protective device for a liquid crystal display according to claim 2, characterized in that: A plurality of locking columns (11) are slidably connected between the protection plate (2) and the moving plate (7), and the locking columns (11) are located on the left and right sides and the upper and lower sides of the protection plate (2).

4. The protective device for a liquid crystal display panel according to claim 3, wherein: A plurality of limiting beads (15) are slidably connected in the locking column (11), and the limiting beads (15) are distributed in the locking column (11) in a circular manner.

5. A protective device for a liquid crystal display panel according to claim 4, wherein: The inner wall of the locking column (11) is fixedly connected with a limiting hole plate (12) at the top, and the inner wall of the locking column (11) is slidably connected with a sliding column (13).

6. A protective device for a liquid crystal display according to claim 5, characterized in that: The bottom of the sliding column (13) is provided with a limiting groove (14), the top of the sliding column (13) is fixedly connected with a connecting column (16), the top of the connecting column (16) is fixedly connected with a fixed column (17), and the inside of the fixed column (17) is fixedly connected with an auxiliary handle (18).

7. A protective device for a liquid crystal display according to claim 6, characterized in that: The outer wall of the connecting column (16) is fixedly connected with a plurality of limiting blocks (20), and the limiting blocks (20) are distributed in a circular manner.

8. A protective device for a liquid crystal display according to claim 7, characterized in that: The outer wall of the top of the sliding column (13) is sleeved with a limiting spring (19), one end of the limiting spring (19) is fixedly connected to the inner wall of the locking column (11), and the other end of the limiting spring (19) is fixedly connected to the bottom of the connecting column (16).

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