Rear frame assembly of waterproof shell of liquid crystal display equipment

Abstract

The utility model relates to the technical field of display equipment, in particular to a rear frame assembly of a waterproof shell of liquid crystal display equipment, which comprises four profiles and a back plate mounted on the profiles, connecting pieces are arranged among the profiles, sealant is arranged at joints of corner adhesive tapes and the profiles, the sealant is matched with the joints of the profiles, and the back plate is mounted on the back plate. The sealing glue is adhered to the sectional materials, connecting grooves are formed in the two ends of each sectional material, the connecting pieces are connected with the sectional materials in an inserted mode through the connecting grooves, positioning holes are formed in the connecting plates, threaded holes matched with the positioning holes are formed in the connecting positions of the sectional materials, bolts are arranged between the connecting pieces and the sectional materials, and the connecting pieces and the sectional materials are fixedly connected together through the positioning holes and the threaded holes. During assembly, after the profiles are placed together, the sealing glue is adhered to the connecting positions of the profiles, then the connecting plates of the connecting pieces are inserted into the connecting grooves in the profiles, and finally bolts penetrate through the positioning holes in the connecting plates and the threaded holes in the profiles to be fixed, so that assembly is completed.

Description

Technical Field

[0001] This application relates to the technical field of display devices, and in particular to a rear frame assembly of a waterproof housing for a liquid crystal display device. Background Art

[0002] A liquid crystal TV, also known as an LCD TV, utilizes the optical anisotropy characteristics of liquid crystals to modulate light under the action of an electric field to achieve information display. It adopts a backlight principle, uses a lamp tube as the backlight source, and combines an auxiliary optical module and a liquid crystal layer to control light to present an image. The liquid crystal TV itself does not emit light and relies on the electric field generated by voltage changes to change the arrangement of liquid crystal molecules to display an image.

[0003] Liquid crystal TVs are usually watched at home. However, in some public facilities, such as bath centers, saunas, etc., liquid crystal TVs are also usually installed.

[0004] However, in such a high-temperature and high-humidity environment, water vapor can easily enter the liquid crystal TV. Therefore, high waterproof performance is required for the display device. Since the core electronic components of the display device, such as the TV main board and power board, are all in the rear frame, the waterproofing of the rear frame is crucial. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of this application is a rear frame assembly of a waterproof housing for a liquid crystal display device, which is used to solve the technical problem of poor waterproofing of the rear frame assembly of the waterproof housing for a liquid crystal display device in a high-humidity environment.

[0006] The above object of this application is achieved through the following technical solutions: A rear frame assembly of a waterproof housing for a liquid crystal display device includes four profiles and a back plate installed on the profiles. Connecting pieces are arranged between the profiles. The connecting piece consists of a pair of connecting plates vertically fixed together. A sealant is arranged at the connection between the connecting plate and the profile. The sealant matches the connection between the sealant and the profile. The sealant is adhered to the profile. Connecting grooves are opened at both ends of each profile. The connecting piece is inserted into the profile through the connecting groove. Positioning holes are opened on each connecting plate. Positioning threaded holes matching the positioning holes are opened at the connection between the profiles. Bolts are arranged between the connecting piece and the profile and are fixedly connected together through the positioning holes and the positioning threaded holes.

[0007] By adopting the above technical solutions, during assembly, first place the profiles together, then adhere the sealant at the connection between the profiles, then insert the connecting plate of the connecting piece into the connecting groove on the profile, and finally fix it through the bolts passing through the positioning holes on the connecting plate and the threaded holes on the profile to complete the assembly. At this time, after the bolts are tightened, the sealant will closely adhere to the back plate and the profile to prevent moisture from invading, thereby improving the waterproof performance of the rear frame structure.

[0008] Further, a groove is formed in the connecting plate, a flange fixedly connected to the profile is arranged in the connecting groove, and the flange is inserted into the groove.

[0009] By adopting the above technical solution, in order to improve the stability after the connection plate is inserted, a groove is formed in the connection plate, and at the same time, a matching flange is arranged in the connection groove of the profile. When inserting, the friction force can be increased, so as to improve the stability.

[0010] Further, a semi-fluid viscous silica gel body for increasing the sealing performance is arranged in the groove.

[0011] By adopting the above technical solution, when assembling, first add the semi-fluid viscous silica gel body into the groove, and then sleeved the four profile side strips on the upper, lower, left and right on the connector. After the semi-fluid viscous silica gel body is cured, it will fill all the gaps at the joint and bond together to form an integral body, so as to prevent water vapor from entering the machine interior through the gaps at the joint.

[0012] Further, through holes are formed on the four sides of the back plate, threaded holes are formed on the profile, and bolts are arranged in the through holes on the back plate and fixedly connected to the profile through the threaded holes on the profile.

[0013] By adopting the above technical solution, after being locked by bolts; the back plate and the profile prevent water molecules from invading into the interior of the component.

[0014] Further, a silica gel elastomer is arranged between the profile and the back plate, and the shape of the silica gel elastomer matches that of the back plate.

[0015] By adopting the above technical solution, a silica gel elastomer is arranged on the joint surface of the back plate and the profile. After the bolts are locked, the elastic silica gel body will closely adhere to the back plate and the profile, thereby further improving the waterproof performance.

[0016] Further, a rectangular waterproof film is installed at one end of the profile away from the back plate.

[0017] By adopting the above technical solution, a waterproof film is arranged in the transition area where the internal back plate and the profile are combined, further preventing water vapor from entering the machine interior.

[0018] Further, corner tapes extend from the four corners of the rectangular waterproof film, and the joints between the corner tapes and the profile are adhered.

[0019] By adopting the above technical solution, by extending the corner tapes from the four sides of the rectangular waterproof film, the connection with the profile is further strengthened.

[0020] Further, a waterproof strip is adhered to the edge of the joint between the profile and the silica gel elastomer.

[0021] By adopting the above technical solutions, in order to further improve the waterproof performance, a waterproof strip is attached at the fitting edge of the profile and the silicone elastomer, further enhancing the waterproof performance.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By using sealant and semi-fluid viscous silicone, multiple sealing layers are formed between the profile, the connecting piece, and the back plate, effectively preventing water molecules from invading the interior of the device through the gaps. Especially the insertion design of the groove opened on the connecting piece and the flange on the profile, and the semi-fluid viscous silicone filled in the groove can fill all the tiny gaps after curing, forming an impregnable waterproof barrier.

[0024] 2. The bolts are tightened through the positioning holes on the connecting plate and the threaded holes on the profile, which not only strengthens the connection strength between the connecting piece and the profile, but also makes the sealant and the silicone elastomer fit more tightly on the back plate and the profile due to the pressure generated after the bolts are tightened, thereby enhancing the structural stability of the entire rear frame assembly.

[0025] 3. The design makes the assembly process simple and fast. Just place the profile, apply sealant, insert the connecting piece, and tighten the bolts to complete the assembly. This modular and easy-to-assemble design reduces production costs and improves production efficiency.

[0026] 4. Profiles, connecting pieces, and waterproof membranes are made of water-resistant and corrosion-resistant materials (such as waterproof silicone, metal alloys, etc.), ensuring that the device can still maintain stable performance in humid and harsh environments and extending its service life. The design of the silicone elastomer and the rectangular waterproof membrane not only enhances the waterproof performance, but also makes the appearance of the rear frame assembly more neat and beautiful, improving the overall texture of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure in the embodiment;

[0028] Figure 2 is Figure 1 an enlarged view of part A in

[0029] Figure 3 is a schematic diagram of the structure of the connecting piece in the embodiment;

[0030] Figure 4 is a cross-sectional view of the profile in the embodiment.

[0031] Reference numerals: 1, profile; 11, positioning threaded hole; 12, connecting groove; 13, flange; 2, connecting plate; 21, positioning hole; 22, sealant; 23, groove; 3, back plate; 4, silicone elastomer; 41, waterproof membrane; 42, corner tape; 43, waterproof strip. Detailed implementation mode

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] Example, referring to Figures 1 - 3 , a rear frame assembly of a waterproof housing for a liquid crystal display device, including a back plate 3 and four profiles 1 vertically connected in sequence around the back plate 3. A connecting piece is provided between adjacent profiles 1. The connecting piece is composed of a pair of connecting plates 2 vertically fixed together. A sealant 22 is provided at the connection between the connecting plate 2 and the profile 1. After the sealant 22 is cured, it forms a connection to integrate the profile 1 and the connecting plate 2 into a whole. In this example, the sealant 22 is made of silicone material. The sealant 22 is adhered to the connection between the profiles 1. Connection grooves 12 are provided at both ends of each profile 1. The connecting piece is inserted into the profile 1 through the connection grooves 12. Specifically, positioning holes 21 are provided on the connecting plates 2, and positioning threaded holes 11 matching the positioning holes 21 are provided at the connection between the profiles 1. A bolt is provided between the connecting piece and the profile 1 and is fixedly connected through the positioning holes 21 and the positioning threaded holes 11. During assembly, first place the profiles 1 vertically together, then adhere the sealant 22 to the connection between the profiles 1, and then insert the connecting plates 2 of the connecting piece into the connection grooves 12 on the profiles 1. Finally, fix it through the bolt passing through the positioning holes 21 on the connecting plates 2 and the threaded holes on the profiles 1 to complete the assembly. At this time, after the bolt is tightened, the sealant 22 will closely adhere to the back plate 3 and the profiles 1 to prevent moisture from invading, thereby improving the waterproof performance of the rear frame structure.

[0034] In this example, a groove 23 is provided on the connecting plate 2, and a flange 13 fixedly connected to the profile 1 is provided in the connection groove 12. The flange 13 is inserted into the groove 23. In order to improve the stability after the connecting plate 2 is inserted, by providing a groove 23 on the connecting plate 2 and a matching flange 13 in the connection groove 12 on the profile 1, the friction force can be increased during insertion, thereby improving the stability.

[0035] In this example, a semi-fluid viscous silicone body for increasing the sealing performance is provided in the groove 23. During assembly, first add the semi-fluid viscous silicone body into the groove 23, and then sleeve the four profiles 1 on the upper, lower, left, and right sides on the connecting plates 2 of the connecting piece. After the semi-fluid viscous silicone body is cured, it will fill all the gaps at the joint and bond together to form a whole, so as to prevent water vapor from entering the machine interior through the gaps at the joint.

[0036] In this example, through holes are provided on the four sides of the back plate 3, threaded holes are provided on the profiles 1, and bolts are provided in the through holes on the back plate 3 and are fixedly connected to the profiles 1 through the threaded holes on the profiles 1. After being tightened by bolts; the back plate 3 and the profiles 1 prevent water molecules from invading into the interior of the assembly.

[0037] In this embodiment, a silicone elastomer 4 is provided between the profile 1 and the back plate 3. The shape of the silicone elastomer 4 matches that of the back plate 3. The silicone elastomer 4 is provided on the joint surface between the back plate 3 and the profile 1. After the bolts are tightened, the elastic silicone body will closely adhere to the back plate 3 and the profile 1, thereby further improving the waterproof performance.

[0038] In this embodiment, a rectangular waterproof film 41 is provided at one end of the back plate 3 installed at the end of the profile 1 away from the back plate 3, and the waterproof film 41 is provided in the transition area where the inner back plate 3 is combined with the profile 1 to further prevent water vapor from entering the machine interior.

[0039] In this embodiment, corner tapes 42 extend from the four corners of the rectangular waterproof film 41, and the joints between the corner tapes 42 and the profile 1 are adhered. By extending the four sides of the rectangular waterproof film 41 with the corner tapes 42, the connection with the profile 1 is further strengthened. The rectangular waterproof film 41 is made of waterproof silicone.

[0040] In this embodiment, in order to further improve the waterproof performance, a waterproof strip 43 is attached to the profile 1 and the silicone elastomer 4 to further improve the waterproof performance.

[0041] Specific implementation process: Insert the connecting plate 2 of the connecting piece into the connecting groove 12 on the profile 1 to ensure that the connecting plate 2 is in close contact with the profile 1. At this time, add a semi-fluid viscous silicone gel into the groove 23 of the corner tape 42. After curing, the silicone gel will fill all the gaps at the joint and bond them together. Then, fasten through the positioning holes 21 on the connecting plate 2 and the threaded holes on the profile 1 with bolts to ensure a firm and reliable connection between the connecting piece and the profile 1. Next, place the back plate 3 on the profile 1 and fasten it through the through holes on the back plate 3 and the threaded holes on the profile 1 with bolts to tightly connect the back plate 3 and the profile 1 together. Set a silicone elastomer 4 on the joint surface between the back plate 3 and the profile 1 to improve the waterproof performance. At the same time, install a rectangular waterproof film 41 at one end of the profile 1 away from the back plate 3 or in the transition area where the inner back plate 3 and the profile 1 are combined to further prevent water vapor from entering the machine interior. Finally, after completing all the assembly steps, conduct a comprehensive inspection of the rear frame assembly to ensure that all connections are tight and seamless and the waterproof performance is good. Through the design of a multi-layer sealing structure (sealing glue 22, semi-fluid viscous silicone gel, silicone elastomer 4, rectangular waterproof film 41), the rear frame assembly effectively prevents water molecules from invading the device interior through the gaps, significantly improving the waterproof performance. At the same time, the connection method of using bolts to fasten between the connecting piece and the profile 1, and between the back plate 3 and the profile 1 ensures the stability and reliability of the structure, enabling it to withstand certain external forces and impacts. In addition, the modular and easy-to-assemble design reduces the production cost, improves the production efficiency, and the assembly process is simple and clear, facilitating the operation of workers. The selection of water-resistant and corrosion-resistant materials also ensures that the device can still maintain stable performance in a humid and harsh environment, extending the service life. Finally, the design of the silicone elastomer 4 and the rectangular waterproof film 41 not only enhances the waterproof performance but also improves the overall aesthetics of the rear frame assembly, making it cleaner, more beautiful, and enhancing the overall texture of the product.

[0042] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of the application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A rear frame assembly of a waterproof housing of a liquid crystal display device, characterized in that: The invention comprises a back plate (3) and four profiles (1) which are vertically connected in sequence and are installed around the back plate (3). A connecting piece is arranged between two adjacent profiles (1). The connecting piece is composed of a pair of connecting plates (2) fixed together vertically. A sealing glue (22) is arranged at the connection between the connecting plates (2) and the profiles (1). After the sealing glue (22) is cured, the profiles (1) and the connecting plates (2) are connected to form a whole. A connecting groove (12) is arranged at both ends of each profile (1). The connecting piece is plugged into the profile (1) through the connecting groove (12). A positioning hole (21) is arranged on the connecting plate (2). A positioning threaded hole (11) matching the positioning hole (21) is arranged at the connection between the profiles (1). Bolts are arranged between the connecting piece and the profiles (1) and are fixedly connected together through the positioning holes (21) and the positioning threaded holes (11).

2. The rear frame assembly of the waterproof housing of a liquid crystal display device according to claim 1, characterized in that: The connecting plate (2) is provided with a groove (23), the connecting groove (12) is provided with a flange (13) fixedly connected to the profile (1), and the flange (13) and the groove (23) are plugged into each other.

3. The rear frame assembly of the waterproof housing of a liquid crystal display device according to claim 2, characterized in that: A semi-fluid viscous silica gel body is arranged in the groove (23) to increase the sealing performance.

4. The rear frame assembly of the waterproof housing of a liquid crystal display device according to claim 1, characterized in that: The back plate (3) has through holes on its four sides, the profile (1) has threaded holes, and bolts are arranged in the through holes on the back plate (3) and are fixedly connected to the profile (1) through the threaded holes on the profile (1).

5. The rear frame assembly of the waterproof housing of a liquid crystal display device according to claim 4, characterized in that: A silicone elastomer (4) is arranged between the profile (1) and the back plate (3), and the shape of the silicone elastomer (4) matches that of the back plate (3).

6. The rear frame assembly of the waterproof housing of a liquid crystal display device according to claim 1, characterized in that: A rectangular waterproof membrane (41) is provided at one end of the profile (1) away from the back plate (3).

7. The rear frame assembly of the waterproof housing of a liquid crystal display device according to claim 6, characterized in that: Corner tapes (42) extend from the four corners of the rectangular waterproof membrane (41), and the corner tapes (42) and the waterproof membrane (41) are fixedly connected to form a whole.

8. The rear frame assembly of the waterproof housing of a liquid crystal display device according to claim 7, characterized in that: A waterproof strip (43) is attached to the edge of the joining portion between the profile (1) and the silicone elastic body (4).

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