Waterproof structure of mobile phone key

Through multiple sealing structures and sliding and flipping designs, the problem of easy failure of traditional mobile phone button waterproof structures has been solved, achieving stable operation and convenient maintenance in harsh environments.

CN224205133UActive Publication Date: 2026-05-05SHENZHEN CHENGSHUNXIN ELECTRONIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN CHENGSHUNXIN ELECTRONIC TECH CO LTD
Filing Date
2025-05-15
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Traditional waterproof structures for mobile phone buttons are prone to losing their sealing effect due to wear and tear of rubber gaskets or failure of coatings, allowing moisture to seep into the phone's interior, affecting critical components such as circuit boards and batteries, and reducing the phone's reliability and durability.

Method used

It adopts a multi-seal structure, including a housing seal ring, a fixing hole seal ring, and a power hole seal ring, combined with a sliding structure and a flipping structure, to ensure that moisture does not seep into the inside of the phone, and to facilitate disassembly and repair.

Benefits of technology

It effectively reduces the risk of water entering the phone's interior, ensures stable operation of the phone in harsh water environments, reduces the probability of failure, and improves structural stability and ease of maintenance.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224205133U_ABST
    Figure CN224205133U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of waterproof sealing, and discloses a mobile phone key waterproof structure which comprises a lower bottom plate, a shell sealing ring is fixedly installed on the side edge of the top of the lower bottom plate, a set of parallel and symmetrical fixing plates are fixedly installed on the top of the lower bottom plate, sliding structures are arranged on the opposite sides of the fixing plates, and the sliding structures are connected with the shell sealing ring. A shell sealing ring is arranged on one side face of the shell, an upper waterproof shell is fixedly installed on the top of the shell sealing ring, a fixing structure is arranged on the side face of the upper waterproof shell, and a power port sealing structure is arranged on the other side face of the upper waterproof shell. The connecting block is rotationally installed in the through groove in the side face of the fixing block and connected with the sealing rubber block, when charging is needed, only the connecting block needs to be slightly rotated, the sealing rubber block can be moved away from the power source hole, operation is easy, convenient and rapid, and after charging is completed, the sealing rubber block is rotated back to the original position, and the sealing state of the power source hole is restored.
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Description

Technical Field

[0001] This utility model relates to the field of waterproof sealing technology, specifically a waterproof structure for mobile phone buttons. Background Technology

[0002] In today's world, mobile phones have become an indispensable part of people's daily lives. Mobile phones come into contact with various environments, and the risk of encountering water is very common. Water intrusion can cause serious damage to the electronic components inside the mobile phone, causing malfunctions, short circuits, or even permanent damage. In order to ensure the normal functioning of the mobile phone and extend its service life, effective waterproofing measures are essential. Among these waterproofing measures, the waterproofing of the mobile phone buttons is particularly critical, because buttons are used frequently and are potential areas where water can easily enter.

[0003] Traditional waterproof structures for mobile phone buttons typically rely on simple rubber gaskets or coatings. However, these methods have many drawbacks. Due to repeated button presses, rubber gaskets wear down over time, losing their sealing effect. Coatings may not provide a comprehensive and durable waterproof solution, especially when the phone is exposed to harsh water environments such as heavy rain or immersion. Once water seeps in through the buttons, it quickly spreads to other parts of the phone, affecting the performance of circuit boards, batteries, and other critical components, thereby reducing the overall reliability and durability of the phone. To address this, we propose a waterproof structure for mobile phone buttons. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a waterproof structure for mobile phone buttons, thus solving the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a waterproof structure for mobile phone buttons, including a bottom plate, a housing sealing ring fixedly installed on the top side of the bottom plate, a set of parallel and symmetrical fixing plates fixedly installed on the top of the bottom plate, a sliding structure provided on one side of the fixing plates, an upper waterproof shell fixedly installed on the top of the housing sealing ring, a fixing structure provided on the side of the upper waterproof shell, and a power port sealing structure provided on the other side of the upper waterproof shell.

[0008] Preferably, the sliding structure includes a groove and a slider. The fixed plate has a groove on one side facing each other, and the slider is slidably installed in the groove. The other side of the slider is L-shaped, and a mobile phone fixing plate is fixedly installed on the side of the slider.

[0009] Preferably, the upper waterproof shell is hollow inside, and a button sleeve is provided on the top of the upper waterproof shell.

[0010] Preferably, the fixing structure includes a fixing hole, a fixing hole sealing ring, and a fixing pin. The fixing plate and the upper waterproof shell have through fixing holes on their sides. A fixing hole sealing ring is fixedly installed in the fixing hole, and a fixing pin is fixedly installed in the fixing hole sealing ring. A pull ring is provided on the outside of the fixing pin.

[0011] Preferably, the power port sealing structure includes a sealing structure and a flipping structure. The sealing structure includes a power hole, a power hole sealing ring, and a sealing rubber block. The power hole is provided on the side of the upper waterproof shell. A power hole sealing ring is fixedly installed in the power hole, and a sealing rubber block is fixedly installed in the power hole sealing ring.

[0012] Preferably, the flipping structure includes a fixing block and a connecting block. The fixing block is fixedly installed on the side of the upper waterproof shell and located next to the power port. A through groove is opened on the side of the fixing block. The connecting block is rotatably installed in the through groove on the side of the fixing block. The other end of the connecting block is fixedly connected to the sealing rubber block.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a waterproof structure for mobile phone buttons, which has the following beneficial effects:

[0015] 1. This phone's waterproof button structure features multiple sealing mechanisms working together, including a housing sealing ring, a fixing hole sealing ring, and a power hole sealing ring. The housing sealing ring surrounds the top side of the bottom plate, effectively blocking water from entering from the bottom edge. The fixing hole sealing ring fills the fixing holes on the fixing plate and the side of the upper waterproof shell, preventing water from seeping in through the fixing holes. The power hole sealing ring fits tightly against the power hole, and together with the sealing rubber block, even in harsh water environments such as heavy rain or immersion, it can greatly reduce the risk of water entering the phone through the power hole, comprehensively protecting the safety of the phone's internal electronic components, significantly reducing the probability of malfunctions, short circuits, or even permanent damage caused by water ingress, and ensuring stable operation of the phone in complex and humid environments.

[0016] 2. This mobile phone button waterproof structure features a cleverly designed groove and slider mechanism. The slider slides smoothly within the groove, and its L-shaped side is used to securely mount the phone mounting plate. This design not only facilitates the installation and fixation of the phone but also effectively distributes the stress generated by button pressing during daily use, preventing damage caused by excessive localized force. Furthermore, the fixing pins in the fixing structure, combined with the sealing rings in the fixing holes, ensure a firm connection and excellent seal. The pull ring on the outer side facilitates disassembly and installation, ensuring structural stability while allowing for future phone repairs or component replacements.

[0017] 3. The waterproof button structure of this mobile phone features a cleverly designed flip-top structure for the power port sealing structure. The fixing block is fixed to the side of the upper waterproof shell, and the connecting block is rotatably installed in the through groove on the side of the fixing block and connected to the sealing rubber block. When charging is required, simply rotate the connecting block to remove the sealing rubber block from the power port. The operation is simple and quick. After charging is completed, rotate the sealing rubber block back to its original position to restore the sealing state of the power port. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the button sleeve of this utility model;

[0020] Figure 3 This is a schematic diagram of the fixing plate of this utility model;

[0021] Figure 4 for Figure 3 A magnified view of part A in the diagram.

[0022] In the diagram: 1. Bottom plate; 2. Shell sealing ring; 3. Fixing plate; 4. Slide groove; 5. Slider; 6. Mobile phone fixing plate; 7. Upper waterproof shell; 8. Fixing hole; 9. Fixing hole sealing ring; 10. Fixing pin; 11. Button sleeve; 12. Power hole; 13. Power hole sealing ring; 14. Fixing block; 15. Connecting block; 16. Sealing rubber block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 A waterproof structure for mobile phone buttons includes a lower base plate 1, a housing sealing ring 2 fixedly installed on the top side of the lower base plate 1, a set of parallel and symmetrical fixing plates 3 fixedly installed on the top of the lower base plate 1, a sliding structure provided on one side of the fixing plates 3 facing each other, an upper waterproof shell 7 fixedly installed on the top of the housing sealing ring 2, a fixing structure provided on the side of the upper waterproof shell 7, and a power port sealing structure provided on the other side of the upper waterproof shell 7.

[0025] Furthermore, the sliding structure includes a groove 4 and a slider 5. The fixed plate 3 has a groove 4 on one side facing each other, and the slider 5 is slidably installed in the groove 4. The other side of the slider 5 is L-shaped, and a mobile phone fixing plate 6 is fixedly installed on the side of the slider 5. In addition to facilitating the installation and fixing of the mobile phone and distributing the stress on the buttons, the sliding structure can also adapt to slight displacement of the mobile phone in different usage scenarios to a certain extent. For example, when the mobile phone is subjected to a slight collision, the slider 5 can slide slightly in the groove 4 to buffer part of the impact force and reduce the impact on the precision components inside the mobile phone. Moreover, this sliding design facilitates the fine-tuning and calibration of the position of the mobile phone during the production and assembly process, improving production efficiency and product consistency. In addition, the fitting precision of the groove 4 and the slider 5 has been optimized to ensure that they will not loosen due to wear during long-term use, and always maintain a stable connection state, ensuring the reliability of the waterproof structure of the mobile phone buttons.

[0026] Furthermore, the upper waterproof case 7 is hollow inside, and a button sleeve 11 is set on the top of the upper waterproof case 7. The hollow design of the upper waterproof case 7 not only provides space for the internal components of the phone, but also plays a certain role in cushioning. When the phone is subjected to external pressure, the hollow structure can disperse some of the pressure, preventing the internal components of the phone from being damaged by excessive pressure. In addition to preventing moisture from seeping in through the gaps in the buttons and ensuring the flexibility of button operation, the button sleeve 11 also has the function of optimizing tactile feedback, which can provide users with clear and comfortable button tactile feedback, allowing users to more accurately perceive the status of the buttons when operating them, thus improving the user's operating experience. Moreover, the button sleeve 11 has a certain degree of wear resistance, and can maintain good elasticity and waterproof performance even with frequent pressing for a long time, extending the service life of the button sleeve 11.

[0027] Furthermore, the fixing structure includes fixing holes 8, fixing hole sealing rings 9, and fixing pins 10. The fixing plate 3 and the upper waterproof shell 7 have through fixing holes 8 on their sides. Fixing hole sealing rings 9 and 10 are fixedly installed within fixing holes 8 and 9, respectively. A pull ring is provided on the outside of the fixing pin 10. Besides enhancing the overall structural stability, preventing moisture ingress, and facilitating disassembly and installation, the fixing structure also has a positioning and calibration function. During installation, the cooperation of fixing holes 8 and fixing pins 10 can accurately position the relative positions of the upper waterproof shell 7 and the fixing plate 3, ensuring accurate installation of each component and avoiding impacts on waterproof performance and overall structural strength due to installation deviations. The fixing hole sealing ring 9 is made of a special elastic material with excellent aging resistance. Even after prolonged exposure to air or changes in temperature and humidity, it maintains stable sealing performance and elasticity, continuously providing waterproofing and enhanced connection. The pull ring design not only facilitates manual operation but also provides a reliable point of leverage in special situations, such as when using tools for disassembly, improving the convenience of disassembly and installation.

[0028] Furthermore, the power port sealing structure includes a sealing structure and a flipping structure. The sealing structure includes a power hole 12, a power hole sealing ring 13, and a sealing rubber block 16. The power hole 12 is provided on the side of the upper waterproof shell 7. The power hole sealing ring 13 is fixedly installed inside the power hole 12, and the sealing rubber block 16 is fixedly installed inside the power hole sealing ring 13. The fitting precision of the power hole 12 and the power hole sealing ring 13 is strictly controlled to ensure a tight fit with the power hole sealing ring 13, minimizing gaps and improving the sealing effect. The sealing rubber block 16 is made of highly elastic, chemically resistant rubber material, which can not only effectively block moisture, but also resist the erosion of various chemicals that may be encountered in daily use, such as sweat and detergents, extending the service life of the sealing rubber block 16. In addition, the sealing structure also has a certain dustproof function, preventing dust and other small particles from entering the power hole and avoiding the risk of short circuit caused by dust accumulation affecting charging contact performance.

[0029] Furthermore, the flip structure includes a fixing block 14 and a connecting block 15. The fixing block 14 is fixedly installed on the side of the upper waterproof shell 7 and is located next to the power hole 12. A through groove is opened on the side of the fixing block 14, and the connecting block 15 is rotatably installed in the through groove on the side of the fixing block 14. The other end of the connecting block 15 is fixedly connected to the sealing rubber block 16. The size and shape of the through groove are closely matched with the connecting block 15 to ensure that the connecting block 15 rotates smoothly and without shaking or loosening. The fixing method of the connecting block 15 and the sealing rubber block 16 adopts a special bonding process to ensure that the connection between the two is firm and reliable and will not separate under frequent flipping operations. In addition, the rotation angle of the flip structure is precisely designed to ensure that the sealing rubber block 16 does not affect the insertion of the charging cable when it is opened, and accurately covers the power hole 12 when it is closed, achieving a good sealing effect, while avoiding structural damage caused by excessive flipping.

[0030] Structural Description:

[0031] Bottom plate 1: It is the basic support component of the entire waterproof structure of the mobile phone buttons, providing an installation platform for other components. The shell sealing ring 2 installed on the top side fits tightly with it, which plays the role of preventing water from the bottom from entering.

[0032] Shell sealing ring 2: It is fixedly installed on the top side of the bottom plate 1, around the connection, forming a waterproof barrier and effectively preventing water from entering the inside of the phone from the bottom edge;

[0033] Fixing plate 3: A set of parallel and symmetrical plates installed on the top of the bottom plate 1, with a sliding structure on the opposite side to assist in fixing the mobile phone and to cooperate with other components to achieve related functions;

[0034] Slide 4: It is opened on the opposite side of the fixed plate 3 and cooperates with the slider 5 so that the slider 5 can slide in it, providing a track for the movement of the mobile phone fixed plate 6;

[0035] Slider 5: Slides within the groove 4, and its other side is L-shaped. The mobile phone mounting plate 6 is fixedly installed on the side, which plays a role in installing the mobile phone and distributing the stress on the buttons.

[0036] Mobile phone mounting plate 6: It is fixedly connected to slider 5 to securely install the mobile phone and ensure the stability of the mobile phone in the entire waterproof structure;

[0037] Waterproof shell 7: Installed on top of shell sealing ring 2, hollow inside to provide space for internal components of the phone, with button sleeve 11 on top and fixing structure and power port sealing structure on the side;

[0038] Fixing hole 8: penetrates the side of fixing plate 3 and upper waterproof shell 7, and cooperates with fixing hole sealing ring 9 and fixing pin 10 to realize the fixed connection between the two and prevent water from seeping in;

[0039] Fixing hole sealing ring 9: Installed in fixing hole 8, it fills the gap of fixing hole, enhances the sealing between fixing pin 10 and fixing hole 8, and improves waterproof effect;

[0040] Fixing pin 10: Installed inside the fixing hole sealing ring 9, with a pull ring on the outside for easy disassembly and installation, so as to make the fixing plate 3 and the upper waterproof shell 7 firmly connected;

[0041] Button cover 11: Located on the top of the waterproof shell 7, it not only ensures the flexibility of button operation, but also prevents water from entering the phone through the button gaps, thus improving the user experience.

[0042] Power hole 12: Located on the side of the upper waterproof shell 7, it is used to connect the charging cable. Together with the power hole sealing ring 13, sealing rubber block 16, etc., it forms a power port sealing structure to prevent moisture from entering the phone from here.

[0043] Power hole sealing ring 13: It is fixedly installed inside the power hole 12, fits tightly against the power hole, enhances the sealing effect, and effectively blocks moisture;

[0044] Fixing block 14: It is fixedly installed on the side of the upper waterproof shell 7 and located next to the power hole 12. A through groove is opened on the side to provide a rotation support point for the connecting block 15.

[0045] Connecting block 15: Rotatably installed in the through groove on the side of the fixed block 14, and the other end is fixedly connected to the sealing rubber block 16 to realize the flipping action of the sealing rubber block 16;

[0046] Sealing rubber block 16: Installed inside the power hole sealing ring 13, it flips open under the action of the connecting block 15 during charging, and returns to its original position after charging is completed, sealing the power hole 12.

[0047] Working Principle: The bottom plate 1 is the foundation of the entire structure, providing a mounting base for other components. The shell sealing ring 2 installed on its top side plays a crucial role in the waterproofing process. When the phone is exposed to water, whether from splashes or accidental drops, the shell sealing ring 2 tightly fits the connection between the bottom plate 1 and the upper waterproof shell 7, forming a reliable sealing barrier. This effectively prevents water from entering the phone from the bottom edge, providing comprehensive protection for the internal electronic components and reducing the risk of malfunctions due to water ingress. The top of the fixing plate 3 is parallel and symmetrically arranged, and its sliding structure on the opposite side facilitates the installation and fixation of the phone. The sliding groove 4 is located on the opposite side of the fixing plate 3. Block 5 slides smoothly within the groove 4. When installing the phone, the position of block 5 can be adjusted according to actual needs. Since the side of block 5 is L-shaped and fixedly connected to the phone mounting plate 6, the stress generated by pressing the button during daily use is transmitted through block 5 to the groove 4, thus distributing it evenly and preventing excessive localized stress. This enhances the stability and durability of the structure, ensuring the phone can be securely installed even under frequent operation. The waterproof shell 7 is hollow inside, and the top button sleeve 11 ensures both the flexibility of button operation and waterproofing. When the user presses the button, the button sleeve 11 deforms accordingly, tightly wrapping the button to prevent moisture from seeping in through the button gaps, ensuring the phone remains dry. To ensure safe button operation in wet environments, the fixing structure on the side of the upper waterproof shell 7 further enhances the overall structural stability. Fixing hole sealing rings 9 are installed in the fixing holes 8 on the side of the fixing plate 3 and the upper waterproof shell 7, with fixing pins 10 inserted into them. The fixing hole sealing rings 9 not only fill the gaps in the fixing holes 8 to prevent moisture from entering, but also increase the friction between the fixing pins 10 and the fixing holes 8, making the connection more secure. The pull ring design on the outside of the fixing pins 10 facilitates disassembly and installation during later phone repairs or component replacements. The power port sealing structure is a key innovation of this waterproof structure, consisting of a sealing structure and a flipping structure working together. In the sealing structure, the power port... The sealing ring 13 fits tightly against the power hole 12, and the sealing rubber block 16 further enhances the sealing effect, effectively preventing moisture from entering the phone through the power hole 12. When charging is required, the flip structure starts to work. The fixing block 14 is fixed on the side of the upper waterproof shell 7 and located next to the power hole 12. The connecting block 15, which is rotatably installed in the through groove on its side, is connected to the sealing rubber block 16. The user can simply rotate the connecting block 15 to remove the sealing rubber block 16 from the power hole 12 for easy insertion of the charging cable. After charging is completed, the connecting block 15 is rotated in the opposite direction, and the sealing rubber block 16 returns to its original position, resealing the power hole 12 and ensuring the waterproof performance of the power port when not charging.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof structure for mobile phone buttons, comprising a bottom plate (1), characterized in that: A housing sealing ring (2) is fixedly installed on the top side of the lower base plate (1). A set of parallel and symmetrical fixing plates (3) are fixedly installed on the top of the lower base plate (1). A sliding structure is provided on one side of the fixing plates (3). An upper waterproof shell (7) is fixedly installed on the top of the housing sealing ring (2). A fixing structure is provided on the side of the upper waterproof shell (7). A power port sealing structure is provided on the other side of the upper waterproof shell (7).

2. The waterproof structure for mobile phone buttons according to claim 1, characterized in that: The sliding structure includes a groove (4) and a slider (5). The fixed plate (3) has a groove (4) on one side facing each other. The slider (5) is slidably installed in the groove (4). The other side of the slider (5) is L-shaped. A mobile phone fixing plate (6) is fixedly installed on the side of the slider (5).

3. The waterproof structure for mobile phone buttons according to claim 1, characterized in that: The upper waterproof shell (7) is hollow inside, and a button sleeve (11) is provided on the top of the upper waterproof shell (7).

4. The waterproof structure for mobile phone buttons according to claim 3, characterized in that: The fixing structure includes a fixing hole (8), a fixing hole sealing ring (9), and a fixing pin (10). The fixing plate (3) and the upper waterproof shell (7) have through fixing holes (8) on their sides. A fixing hole sealing ring (9) is fixedly installed in the fixing hole (8). A fixing pin (10) is fixedly installed in the fixing hole sealing ring (9). A pull ring is provided on the outside of the fixing pin (10).

5. A waterproof structure for mobile phone buttons according to claim 3, characterized in that: The power port sealing structure includes a sealing structure and a flipping structure. The sealing structure includes a power port (12), a power port sealing ring (13), and a sealing rubber block (16). The upper waterproof shell (7) has a power port (12) on its side. A power port sealing ring (13) is fixedly installed in the power port (12), and a sealing rubber block (16) is fixedly installed in the power port sealing ring (13).

6. The waterproof structure for mobile phone buttons according to claim 5, characterized in that: The flipping structure includes a fixing block (14) and a connecting block (15). The fixing block (14) is fixedly installed on the side of the upper waterproof shell (7) and located next to the power hole (12). A through groove is provided on the side of the fixing block (14). The connecting block (15) is rotatably installed in the through groove on the side of the fixing block (14). The other end of the connecting block (15) is fixedly connected to the sealing rubber block (16).