Waterproof assembly structure of terminal display screen

Abstract

The invention relates to the technical field of touch display screens, and discloses a terminal display screen waterproof assembly structure which comprises a touch display screen assembly installed in a front shell, a water collecting groove is formed in the outer side of a first step table, and the outer side of the bottom of the water collecting groove communicates with a drainage groove; a transparent cover plate is installed on the top of the first step table through a silica gel base, and the transparent cover plate and the silica gel base are sealed and fixed through an air bag tensioning piece on the top of the silica gel base. The touch display screen assembly is located between the transparent cover plate and the second step table, and a sealing silica gel assembly is arranged on the outer side of the touch display screen assembly and tightly attached to the inner wall of the first step table. According to the invention, accumulated water can be discharged in time in a scene with large water quantity such as rain, and damage to equipment caused by accumulated water retention is avoided. According to the waterproof touch display screen assembly, the double waterproof scheme design of the silica gel base and the outer side frame-shaped silica gel block is adopted, the waterproof performance of the touch display screen assembly is remarkably improved, and the use stability and safety of equipment in a complex environment are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of touch display screens, and particularly to a waterproof assembly structure for a terminal display screen. Background Art

[0002] With the acceleration of the digitalization process and the continuous development of human-computer interaction technology, the market demand for outdoor intelligent devices has grown rapidly. Devices such as outdoor mobile phones, industrial laptops, motorcycles, and charging piles are widely equipped with touch display screens. Taking motorcycles as an example, during the assembly process, it is necessary to bond the touch display screen to the front shell. However, after the bonding is completed in the prior art, the waterproof performance between the front shell of the electronic device and the touch display screen is still insufficient. Especially when used in harsh environments for a long time, problems such as waterproof failure are likely to occur, affecting the reliability and service life of the device.

[0003] Traditionally, the display screen assembly and the front shell assembly are usually bonded with waterproof foam tape. This solution has strong bonding force and a certain buffering ability, but it has poor weather resistance. The high-temperature and ultraviolet resistance of the waterproof foam tape is relatively poor. It may degrade when exposed to outdoor sunlight or high-temperature environments for a long time, will deform or reduce the adhesiveness, and in addition, the waterproof foam tape has weak resistance to certain chemicals and is easily corroded, etc., and finally loses the waterproof performance. During actual use, the foam tape is prone to deformation, degradation, and even loss of adhesiveness, ultimately resulting in poor stability of the waterproof performance and being unable to meet the long-term use requirements of outdoor devices in harsh environments. Therefore, we introduce a waterproof assembly structure for a terminal display screen. Summary of the Invention

[0004] The purpose of the present invention is to provide a waterproof assembly structure for a terminal display screen to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A waterproof assembly structure for a terminal display screen includes a touch display screen assembly installed inside the front shell. Inside the front shell, a first stepped platform and a second stepped platform are sequentially arranged from top to bottom. A water collecting groove is provided on the outside of the first stepped platform, and a drainage groove is communicated with the outside of the bottom of the water collecting groove;

[0007] A transparent cover plate is installed on the top of the first stepped platform by a silica gel seat, and an airbag tensioning member on the top of the silica gel seat realizes the sealing and fixing of the transparent cover plate and the silica gel seat;

[0008] The touch display screen assembly is located between the transparent cover plate and the second stepped platform. A sealing silica gel assembly is provided on the outside of the touch display screen assembly, and the sealing silica gel assembly closely adheres to the inner wall of the first stepped platform.

[0009] Preferably, the drainage groove is inclined with the inner side being higher and the outer side being lower.

[0010] Preferably, a buckle plate is provided on the outer side of the lower end of the transparent cover plate, and the buckle plate covers the outer side of the first stepped platform.

[0011] Preferably, the transparent cover plate is seated on the silicone seat, and an arc-shaped positioning protrusion is provided at the lower end of the silicone seat, and the arc-shaped positioning protrusion is stuck in the positioning groove at the top of the first stepped platform.

[0012] Preferably, a trapezoidal protrusion integrally formed with the silicone seat is provided in the middle of the top of the silicone seat, and the trapezoidal protrusion is stuck in the card slot at the lower end of the transparent cover plate.

[0013] Preferably, the airbag tensioning member includes a top airbag fixed to the top of the trapezoidal protrusion and side airbags fixed to the inner and outer walls at the connection between the trapezoidal protrusion and the silicone seat, and the top airbag is communicated with the corresponding side airbag through an air duct.

[0014] Preferably, the touch display screen assembly includes a touch screen functional sheet and a display screen. The touch screen functional sheet is fixed to the top of the display screen by a first OCA adhesive layer, and the touch screen functional sheet is fixed to the lower end of the transparent cover plate by a second OCA adhesive layer.

[0015] Preferably, the sealing silicone assembly includes an inner frame-shaped metal sheet fixed to the outside of the touch display screen assembly, an outer frame-shaped silicone block fixed to the outside of the inner frame-shaped metal sheet, and a close-pressing member fixed to the outside of the outer frame-shaped silicone block;

[0016] The close-pressing member includes a metal plate, a buckle frame integrally fixed to the upper and lower ends of the metal plate, and a close-pressing protrusion fixed to the outer side wall of the metal plate;

[0017] The connecting block on the outside of the inner frame-shaped metal sheet passes through the outer frame-shaped silicone block and is stuck inside the corresponding buckle frame.

[0018] Preferably, a bottom frame-shaped protrusion integrally formed with the outer frame-shaped silicone block is provided on the inner side of the bottom of the outer frame-shaped silicone block, and the inner frame-shaped metal sheet and the bottom of the display screen are seated on the upper end of the bottom frame-shaped protrusion.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scenario with large amounts of water such as rain, the present invention can timely drain the accumulated water and avoid damage to the device caused by the retention of the accumulated water. The present invention adopts a dual waterproof scheme design of a silicone seat and an outer frame-shaped silicone block, which significantly improves the waterproof performance of the touch display screen assembly and ensures the use stability and safety of the device in a complex environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram of the whole of the present invention;

[0021] Figure 2 is of the present invention Figure 1 cross-sectional structural schematic diagram;

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at position A in the present invention;

[0023] Figure 4 Schematic diagram of the sectional structure of the front shell of the present invention;

[0024] Figure 5 Schematic diagram of the three-dimensional structure of the silica gel seat of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the sectional structure at B-B in the present invention;

[0026] Figure 7 Schematic diagram of the sectional structure of the transparent cover plate of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at position C in the present invention;

[0028] Figure 9 Exploded schematic diagram of the connection between the close pressing member and the sealing silica gel assembly of the present invention;

[0029] Figure 10 Schematic diagram of the sectional structure after the sealing silica gel assembly and the touch display screen assembly of the present invention are assembled;

[0030] Figure 11 For the present invention Figure 10 Schematic diagram of the enlarged structure at position D in the present invention;

[0031] Figure 12 Three-dimensional schematic diagram of the close pressing member of the present invention;

[0032] Figure 13 For the present invention Figure 9 Three-dimensional schematic diagram after combined installation.

[0033] In the figure: 1. Transparent cover plate; 11. Buckle plate; 12. Card slot; 2. Front shell; 21. Drainage groove; 22. Water collecting groove; 23. First stepped platform; 24. Second stepped platform; 25. Positioning groove; 3. Second OCA adhesive layer; 4. Touch screen functional sheet; 5. First OCA adhesive layer; 6. Display screen; 7. Outer frame-shaped silica gel block; 71. Bottom frame-shaped protrusion; 8. Silica gel seat; 81. Side airbag; 82. Top airbag; 83. Arc-shaped positioning protrusion; 84. Trapezoidal protrusion; 85. Air duct; 9. Inner frame-shaped metal sheet; 91. Connection block; 10. Close pressing member; 101. Metal plate; 102. Close protrusion; 103. Buckle frame. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment:

[0036] Please refer to Figures 1-13 , the present invention provides a technical solution:

[0037] A waterproof assembly structure for a terminal display screen, including a touch display screen component installed inside the front shell 2. Inside the front shell 2, a first stepped platform 23 and a second stepped platform 24 are successively arranged from top to bottom. A water collecting groove 22 is arranged outside the first stepped platform 23, and a drain groove 21 is communicated with the outside of the bottom of the water collecting groove 22. This design can timely drain accumulated water in scenarios with large amounts of water such as rain, avoiding damage to the device caused by the retention of accumulated water.

[0038] The drain groove 21 is inclined with the inner side higher than the outer side. The inclined design of the drain groove 21 utilizes the principle of gravity to achieve automatic drainage without additional power equipment, which is both simple and reliable.

[0039] At the connection between the water collecting groove 22 and the drain groove 21, a smooth transition design is adopted. This design avoids the formation of turbulent flow at the connection, enabling the accumulated water to flow more smoothly from the water collecting groove 22 into the drain groove 21. At the same time, a filtering structure is arranged at the higher inner end of the drain groove 21, which can effectively intercept dust and impurities, prevent them from blocking the drainage channel, ensure the stability of the drainage system during long-term use, and reduce the risk of damage to the device caused by water accumulation due to poor drainage.

[0040] A transparent cover plate 1 is installed on the top of the first stepped platform 23 by a silicone seat 8. A buckle plate 11 is arranged outside the lower end of the transparent cover plate 1, and the buckle plate 11 covers the outside of the first stepped platform 23. This can play a role in limiting and fixing the transparent cover plate 1, making the transparent cover plate 1 more firmly installed on the first stepped platform 23, enhancing the stability of the entire device structure, and reducing the loosening or damage of components caused by external impact or vibration.

[0041] The transparent cover plate 1 is seated on the silicone seat 8, and an arc-shaped positioning protrusion 83 is arranged at the lower end of the silicone seat 8. The arc-shaped positioning protrusion 83 is stuck in the positioning groove 25 at the top of the first stepped platform 23. In this way, the position of the transparent cover plate 1 can be fixed through the silicone seat 8, preventing the position of the transparent cover plate 1 from shifting.

[0042] The arc-shaped positioning protrusion 83 and the positioning groove 25 are highly matched in shape and size, and anti-slip textures are provided on the contact surfaces of the two. This not only further prevents the silicone seat 8 from displacing on the first stepped platform 23, but also increases the friction between the two, making the entire connection structure more stable when subjected to external impact or vibration.

[0043] A trapezoidal protrusion 84 integrally formed with the silicone seat 8 is provided in the center of the top of the silicone seat 8, and the trapezoidal protrusion 84 is stuck in the card slot 12 at the lower end of the transparent cover plate 1. This can further improve the firmness of the connection between the transparent cover plate 1 and the silicone seat 8, and the position of the transparent cover plate 1 can be fixed through the silicone seat 8 to prevent the position of the transparent cover plate 1 from shifting.

[0044] When the trapezoidal protrusion 84 and the card slot 12 are connected, the inclined surface of the trapezoidal protrusion 84 is closely attached to the inclined surface of the card slot 12, forming a wedging structure. This structure not only improves the firmness of the connection between the transparent cover plate 1 and the silicone seat 8, but also when the airbag tensioning member works, the wedging effect between the trapezoidal protrusion 84 and the card slot 12 can better disperse the pressure generated by the airbag, further enhancing the sealing effect.

[0045] The cooperation of the arc-shaped positioning protrusion 83 and the positioning groove 25, as well as the trapezoidal protrusion 84 and the card slot 12, not only enhances the structural stability, but also further improves the sealing performance. These positioning structures can ensure the accurate installation of the transparent cover plate 1 and the silicone seat 8, and avoid sealing failure caused by improper installation.

[0046] The airbag tensioning member on the top of the silicone seat 8 realizes the sealed fixation of the transparent cover plate 1 and the silicone seat 8;

[0047] The airbag tensioning member includes a top airbag 82 fixed on the top of the trapezoidal protrusion 84 and side airbags 81 fixed on the inner and outer walls at the connection of the trapezoidal protrusion 84 and the silicone seat 8. The top airbag 82 is communicated with the corresponding side airbag 81 through an air duct 85.

[0048] The airbag tensioning member can form a uniform pressure between the transparent cover plate 1 and the silicone seat 8 through the uniform distribution of gas in the top airbag 82 and the side airbags 81, ensuring the sealing effect. Compared with the traditional sealing method, the airbag tensioning member can better adapt to the minute deformation between the transparent cover plate 1 and the silicone seat 8, improving the reliability of the seal.

[0049] The touch display screen assembly is located between the transparent cover plate 1 and the second stepped platform 24, and a sealing silicone assembly is provided outside the touch display screen assembly, and the sealing silicone assembly is closely attached to the inner wall of the first stepped platform 23.

[0050] The touch display screen assembly includes a touch screen functional sheet 4 and a display screen 6. The touch screen functional sheet 4 is fixed on the top of the display screen 6 by a first OCA adhesive layer 5, and the touch screen functional sheet 4 is fixed at the lower end of the transparent cover plate 1 by a second OCA adhesive layer 3.

[0051] The OCA adhesive has strong adhesiveness and can tightly fix the touch screen functional sheet 4, the display screen 6 and the transparent cover plate 1 together to form an integral structure. This tight fitting can improve the seismic resistance and impact resistance of the assembly and reduce the risk of component loosening or damage caused by external forces.

[0052] Uniform force distribution: The OCA adhesive can evenly transmit pressure, enabling the touch screen functional sheet 4, the display screen 6 and the transparent cover plate 1 to be evenly stressed when subjected to external forces, avoiding damage caused by local stress concentration.

[0053] Sealing function: The OCA adhesive can play a certain sealing role, preventing moisture and dust from entering the gaps between the touch screen functional sheet 4, the display screen 6 and the transparent cover plate 1, thereby protecting these components from the influence of the external environment and extending their service life. This is in line with the waterproof design concept of the entire waterproof assembly, further improving the reliability and stability of the device.

[0054] The touch screen functional sheet 4 is fixed at the lower end of the transparent cover plate 1 by a second OCA adhesive layer 3. Ensure that the four sides of the touch display screen assembly are completely sealed to form a first bonded body. This design effectively avoids the intrusion of water vapor in environments such as rain and humidity, prevents the failure of touch display functions, and improves the reliability of the assembly in harsh environments.

[0055] The sealing silicone assembly includes an inner frame-shaped metal sheet 9 fixed on the outside of the touch display screen assembly, an outer frame-shaped silicone block 7 fixed on the outside of the inner frame-shaped metal sheet 9, and a close-pressing member 10 fixed on the outside of the outer frame-shaped silicone block 7;

[0056] After the transparent cover plate 1 and the front shell 2 are bonded and pressed together through the outer frame-shaped silicone block 7, a second bonded body is formed. Effectively prevent rainwater from seeping into the touch display screen assembly and ensure the stable operation of the device in extreme environments.

[0057] The close-pressing member 10 includes a metal plate 101, a snap frame 103 integrally fixed at the upper and lower ends of the metal plate 101, and a close-pressing protrusion 102 fixed on the outer side wall of the metal plate 101;

[0058] The connecting block 91 on the outside of the inner frame-shaped metal sheet 9 passes through and extends out of the outer frame-shaped silicone block 7 and is stuck inside the corresponding snap frame 103.

[0059] The inner side of the bottom of the outer frame-shaped silicone block 7 is provided with a bottom frame-shaped protrusion 71 integrally formed therewith, and the inner frame-shaped metal sheet 9 and the bottom of the display screen 6 are located on the upper end of the bottom frame-shaped protrusion 71.

[0060] The multi - layer sealing design of the inner frame - shaped metal sheet 9, the outer frame - shaped silicone block 7 and the tightly - attached pressing member 10 forms an effective waterproof barrier. The inner frame - shaped metal sheet 9 provides a certain rigid support, while the outer frame - shaped silicone block 7 fills the gaps with its elastic characteristics, and the tightly - attached pressing member 10 further enhances the sealing effect. This multi - layer sealing design can effectively prevent moisture from entering the touch - display screen assembly from the side, protecting its internal circuits and components from damage.

[0061] Metal has good heat - conduction performance. When the touch - display screen assembly (touch - screen functional sheet 4 and display screen 6) generates heat during operation, the inner frame - shaped metal sheet 9 can quickly absorb this heat and conduct it over a larger area. The heat is transferred from the inner frame - shaped metal sheet 9 to the outer frame - shaped silicone block 7 and the tightly - attached pressing member 10. Through the outer frame - shaped silicone block 7, the heat is diffused into the interior of the front shell 2, and through the tightly - attached pressing member 10, the heat is diffused to the front shell 2, so that the heat will not accumulate in the local area of the touch - display screen assembly, avoiding local overheating from affecting the performance of the assembly.

[0062] The design of the metal plate 101 and the tightly - attached protrusion 102 on the tightly - attached pressing member, after the sealing silicone component is installed, the tightly - attached protrusion 102 closely adheres to the inner wall of the first stepped platform 23, which can further play a role in preventing the position deviation of the touch - display screen assembly.

[0063] Specifically, during use, the drainage system set inside the front shell 2 is an important part of waterproofing. The water - collecting groove 22 outside the first stepped platform 23 can collect the moisture that enters the interior of the front shell 2. When the moisture flows into the water - collecting groove 22, due to the drainage groove 21 being inclined with a higher inner side and a lower outer side, the water will, under the action of gravity, flow out of the terminal along the drainage groove 21, avoiding damage to the internal components caused by moisture accumulation.

[0064] The transparent cover plate 1 is installed on the top of the first stepped platform 23 through the silicone seat 8. The air - bag tensioning member on the top of the silicone seat 8 plays a key role in sealing and fixing. When the transparent cover plate 1 is seated on the silicone seat 8, the top air - bag 82 will be squeezed. The top air - bag 82 is connected to the side air - bag 81 through the air duct 85. The side air - bag 81 inflates with air intake, the top air - bag 82 closely adheres to the top of the card slot 12, and the side air - bag 81 closely adheres to the inner wall of the card slot 12, thus forming a tight seal between the transparent cover plate 1 and the silicone seat 8.

[0065] At the same time, the arc - shaped positioning protrusion 83 at the lower end of the silicone seat 8 is stuck in the positioning groove 25 at the top of the first stepped platform 23, and the trapezoidal protrusion 84 is stuck in the card slot 12 at the lower end of the transparent cover plate 1, further enhancing the structural stability and sealing performance.

[0066] The sealing silicone component on the outer side of the touch display screen component can effectively prevent moisture from entering from the side. The inner frame-shaped metal sheet 9 is fixed on the outer side of the touch display screen component, the outer frame-shaped silicone block 7 is fixed on its outer side, and the close pressing member 10 is fixed on the outer side of the outer frame-shaped silicone block 7.

[0067] The connecting block 91 on the outer side of the inner frame-shaped metal sheet 9 penetrates through the outer frame-shaped silicone block 7 and is stuck in the corresponding buckle frame 103, so that all parts are tightly connected. The inner side of the bottom of the outer frame-shaped silicone block 7 is provided with a bottom frame-shaped protrusion 71, and the bottom of the inner frame-shaped metal sheet 9 and the display screen 6 are located on the upper end of the bottom frame-shaped protrusion 71, further enhancing the bottom tightness.

[0068] The sealing structure of the entire waterproof assembly, from the airbag tensioning member sealing between the transparent cover plate 1 and the silicone seat 8, to the OCA adhesive layer (i.e., the first OCA adhesive layer 5 and the second OCA adhesive layer 3) sealing between the touch display screen component, the transparent cover plate 1, and the second stepped platform 24, and then to the multi-layer sealing of the sealing silicone component, forms a multi-level and all-round waterproof system. These sealing structures cooperate with each other and work together to greatly improve the waterproof performance of the device and ensure that the device can operate normally in various harsh environments.

[0069] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof assembly structure for a terminal display screen, comprising a touch display screen assembly installed inside a front shell, characterized in that: Inside the front shell, a first stepped platform and a second stepped platform are successively arranged from top to bottom. A water collecting groove is arranged on the outside of the first stepped platform, and a drain groove is communicated with the outside of the bottom of the water collecting groove. A transparent cover plate is installed on the top of the first stepped platform by a silica gel seat, and an airbag tensioning member on the top of the silica gel seat realizes the sealed fixation of the transparent cover plate and the silica gel seat. The touch display screen assembly is located between the transparent cover plate and the second stepped platform. A sealing silica gel assembly is arranged on the outside of the touch display screen assembly, and the sealing silica gel assembly is closely attached to the inner wall of the first stepped platform.

2. The waterproof assembly structure of a terminal display screen according to claim 1, characterized in that: The drain groove is inclined with the inner side higher and the outer side lower.

3. The waterproof assembly structure of a terminal display screen according to claim 1, characterized in that: A buckle plate is arranged on the outer side of the lower end of the transparent cover plate, and the buckle plate covers the outside of the first stepped platform.

4. The waterproof assembly structure of a terminal display screen according to claim 1, characterized in that: The transparent cover plate is seated on the silica gel seat. An arc-shaped positioning protrusion is arranged at the lower end of the silica gel seat, and the arc-shaped positioning protrusion is stuck in the positioning groove at the top of the first stepped platform.

5. The waterproof assembly structure of a terminal display screen according to claim 1, wherein: A trapezoidal protrusion integrally formed with the silica gel seat is arranged in the middle of the top of the silica gel seat, and the trapezoidal protrusion is stuck in the card slot at the lower end of the transparent cover plate.

6. The waterproof assembly structure of a terminal display screen according to claim 5, wherein: The airbag tensioning member includes a top airbag fixed on the top of the trapezoidal protrusion and side airbags fixed on the inner and outer walls at the connection between the trapezoidal protrusion and the silica gel seat. The top airbag is communicated with the corresponding side airbag through an air duct.

7. The waterproof assembly structure of a terminal display screen according to claim 1, characterized in that: The touch display screen assembly includes a touch screen functional sheet and a display screen. The touch screen functional sheet is fixed on the top of the display screen by a first OCA adhesive layer, and the touch screen functional sheet is fixed on the lower end of the transparent cover plate by a second OCA adhesive layer.

8. A waterproof assembly structure for a terminal display screen according to claim 7, characterized in that: The sealing silica gel assembly includes an inner frame-shaped metal sheet fixed on the outside of the touch display screen assembly, an outer frame-shaped silica gel block fixed on the outside of the inner frame-shaped metal sheet, and a close pressing member fixed on the outside of the outer frame-shaped silica gel block. The close pressing member includes a metal plate, a buckle frame integrally fixed at the upper and lower ends of the metal plate, and a close protrusion fixed on the outer side wall of the metal plate. A connecting block on the outside of the inner frame-shaped metal sheet penetrates through the outer frame-shaped silica gel block and is stuck inside the corresponding buckle frame.

9. A waterproof assembly structure for a terminal display screen according to claim 8, characterized in that: A bottom frame-shaped protrusion integrally formed with the outer frame-shaped silica gel block is arranged on the inner side of the bottom of the outer frame-shaped silica gel block, and the inner frame-shaped metal sheet and the bottom of the display screen are seated on the upper end of the bottom frame-shaped protrusion.

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