Waterproof mobile phone

Abstract

The waterproof mobile phone comprises a front shell, the front shell comprises a front shell bottom plate and a front shell side wall, one end of the front shell side wall is connected with the front shell bottom plate and is arranged around the edge of the front shell bottom plate, the front shell bottom plate and the front shell side wall form a containing cavity in a surrounding mode, and a sealing face is formed on the side, away from the front shell bottom plate, of the front shell side wall; a first mounting groove is formed in the sealing surface; and the flexible circuit board comprises a flexible circuit board body and a connecting part connected to the flexible circuit board body, the flexible circuit board body is arranged on the outer surface of the side wall of the front shell, and the connecting part extends into the accommodating cavity through the first mounting groove. According to the waterproof mobile phone provided by the embodiment of the invention, the flexible circuit board and the front shell can be assembled under the condition that the front shell is not provided with a hole, meanwhile, the sealing performance among the flexible circuit board, the front shell and the middle frame is ensured, water is prevented from entering the mobile phone, the strength of the front shell is improved, and the service life of the waterproof mobile phone is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of mobile phone waterproofing, and in particular to a waterproof mobile phone. Background Art

[0002] With the growing number of specialized user groups, such as outdoor enthusiasts and water sports participants, the demand for highly waterproof mobile phones is increasing. Currently, waterproof mobile phone casings primarily feature a one-piece mid-frame with a flexible printed circuit board installed, or a front shell with a hole cut in it, with the flexible printed circuit board installed and sealed with the mid-frame.

[0003] However, the one-piece middle frame requires CNC machining during actual assembly, resulting in high production costs. The front housing with a hole-punch installation cannot be automated, resulting in low assembly efficiency and reduced front housing strength, increasing the risk of damage to the phone during use and installation. Utility Model Content

[0004] The embodiment of the present application discloses a waterproof mobile phone, which can install a flexible circuit board and a middle frame without opening a hole in the front shell, thereby solving the problem of low strength of the front shell caused by opening a hole in the front shell.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the present application provides a waterproof mobile phone, including: a front shell, the front shell including a front shell bottom plate and a front shell side wall, one end of the front shell side wall is connected to the front shell bottom plate and is arranged around the edge of the front shell bottom plate, the front shell bottom plate and the front shell side wall are arranged to form an accommodating cavity, a sealing surface is formed on the side of the front shell side wall away from the front shell bottom plate, and a first mounting groove is formed on the sealing surface; a flexible circuit board, the flexible circuit board includes a flexible circuit board body and a connecting part connected to the flexible circuit board body, the flexible circuit board body is arranged on the outer surface of the front shell side wall, and the connecting part extends into the accommodating cavity through the first mounting groove.

[0006] As an optional embodiment, the waterproof mobile phone also includes: a first sealant, the first sealant is filled in the first mounting groove, and the first sealant is used to fix the connecting part to the first mounting groove and fill the gap between the connecting part and the first mounting groove.

[0007] As an optional embodiment, the connecting portion includes a first bending portion and a second bending portion connected in sequence, the first bending portion is bonded into the first mounting groove, and the second bending portion is bonded to the inner surface of the front shell side wall.

[0008] As an optional implementation, a second mounting groove is formed on the inner surface of the front shell side wall, and the second bent portion is bonded into the second mounting groove.

[0009] As an optional embodiment, the waterproof mobile phone also includes: a middle frame, the middle frame including a middle frame bottom plate and a middle frame side wall, the middle frame bottom plate abuts the sealing surface, the middle frame side wall is sleeved on the front shell side wall, and the flexible circuit board body is located between the middle frame side wall and the front shell side wall; an insulating layer, the insulating layer is arranged between the middle frame bottom plate and the sealing surface.

[0010] As an optional embodiment, the waterproof mobile phone further includes: a second sealant, the second sealant is arranged between the insulating layer and the middle frame bottom plate, and the second sealant is used to connect the insulating layer and the middle frame bottom plate.

[0011] As an optional embodiment, the waterproof mobile phone further includes: a back cover, which is connected to the middle frame; a third sealant, which is arranged between the middle frame and the back cover, and the third sealant can seal and fix the back cover to the middle frame.

[0012] As an optional embodiment, the flexible circuit board includes a plurality of the connecting parts, and the sealing surface is formed with a plurality of first mounting grooves corresponding to the plurality of connecting parts, and each of the connecting parts extends into the accommodating cavity through the corresponding first mounting groove.

[0013] As an optional embodiment, there are multiple flexible circuit boards, and the multiple flexible circuit boards are arranged around the side wall of the front shell. The sealing surface is respectively provided with multiple first mounting grooves at positions corresponding to the multiple flexible circuit boards, and the connecting portion of each flexible circuit board extends into the accommodating cavity through the corresponding first mounting groove.

[0014] As an optional implementation, the flexible circuit board includes an antenna circuit board, a fingerprint circuit board and a side key circuit board.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The waterproof mobile phone provided in the embodiment of the present application can extend the connection portion of the flexible circuit board through the first mounting groove into the accommodating cavity, so that the connection portion is connected to other processing units inside the waterproof mobile phone, thereby realizing the normal operation of the waterproof mobile phone function. At the same time, the connection portion of the flexible circuit board passing through the first mounting groove can avoid the problem of reduced strength of the front shell caused by opening a hole in the front shell. In addition, the first mounting groove is integrally formed with the front shell, avoiding the problem of high production costs caused by CNC machining. The waterproof mobile phone provided in the embodiment of the present application can reduce production costs and production difficulty while ensuring the waterproof effect and functional operation of the waterproof mobile phone. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is one of the structural diagrams of a waterproof mobile phone provided in an embodiment of the present application;

[0019] Figure 2 This is a second structural diagram of a waterproof mobile phone provided in an embodiment of the present application;

[0020] Figure 3 This is the third structural diagram of the waterproof mobile phone provided in the embodiment of the present application;

[0021] Figure 4 This is a fourth structural diagram of a waterproof mobile phone provided in an embodiment of the present application;

[0022] Figure 5 This is a fifth structural diagram of a waterproof mobile phone provided in an embodiment of the present application;

[0023] Figure 6 for Figure 5 Schematic diagram of the cross section along the AA direction;

[0024] Figure 7 A schematic structural diagram of the insulating layer provided in an embodiment of the present application;

[0025] Figure 8 A schematic diagram of the explosion structure of a waterproof mobile phone provided in an embodiment of the present application;

[0026] Figure 9 A schematic diagram of the structure of the flexible circuit board provided in an embodiment of the present application.

[0027] Description of reference numerals:

[0028] 100-waterproof mobile phone; 1-front shell; 11-front shell bottom plate; 12-front shell side wall; 13-first installation slot; 14-second installation slot; 1a-accommodation cavity; 1b-sealing surface; 2-flexible circuit board; 21-flexible circuit board body; 22-connecting part; 221-first bending part; 222-second bending part; 3-first sealant; 4-middle frame; 41-middle frame bottom plate; 42-middle frame side wall; 5-insulating layer; 6-second sealant; 7-back cover; 8-third sealant. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] In this application, terms such as "upper," "lower," "top," "bottom," and "inner" indicate positions or locations based on those shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0031] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0032] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0034] With the growing number of outdoor enthusiasts and the significant increase in water sports participants in recent years, market demand for highly waterproof phones is increasing. These users often encounter complex situations such as splashes, rain, and even short periods of immersion when using their phones. Consequently, user demand for waterproof phones is increasing, and the requirements for waterproof performance are also gradually increasing. In response to this market trend, mobile phone manufacturers have begun developing highly waterproof phones.

[0035] At present, the shell structures of waterproof mobile phones on the market can be mainly divided into three categories: the first category is a one-piece middle frame, in which the middle frame of the mobile phone is an integral component, formed by nano-injection molding, and the appearance and internal structure are processed by CNC machining; the second category is also a one-piece middle frame, in which the middle frame of the mobile phone is an integral component, and electronic components such as antennas are directly embedded in the plastic mold, and the internal structure and antenna connection bridge are processed by CNC machining; the third category is to divide the mobile phone shell into two parts, the front shell and the middle frame, and the flexible circuit board passes through the opening on the side wall of the front shell to connect with other components inside the mobile phone, and sealant is applied around the opening to prevent moisture from seeping into the interior of the mobile phone through the opening.

[0036] However, both the first and second types of housing structures require CNC machining, which is costly. The third type of housing structure requires the flexible circuit board to be threaded through a hole in the side wall of the front housing, resulting in low assembly efficiency and impracticality for automated assembly. Furthermore, after the flexible circuit board is threaded through the hole, multi-axis glue dispensing is required around the perimeter of the hole, increasing the likelihood of glue overflow and defective products, requiring additional glue application and glue removal operations. Furthermore, the hole in the side of the front housing weakens the housing and increases the risk of damage.

[0037] In order to solve the above problems, the inventors studied the limitations of existing waterproof mobile phone cases, improved the existing waterproof mobile phones, and designed a waterproof mobile phone that can install flexible circuit boards and middle frames without opening holes in the front shell, thereby preventing the problem of reduced strength of the front shell caused by opening holes in the front shell, and achieving the purpose of avoiding opening holes in the front shell while ensuring the waterproof effect of the mobile phone.

[0038] Based on this, an embodiment of the present application discloses a waterproof mobile phone, which solves the problem of reduced strength of the front shell caused by the opening of the front shell.

[0039] The technical solution of the present application will be further described below with reference to the embodiments and drawings.

[0040] See also Figure 1 and Figure 2 , Figure 1 This is one of the structural diagrams of the waterproof mobile phone 100 provided in an embodiment of the present application. Figure 2This is the second structural schematic diagram of the waterproof mobile phone 100 provided in an embodiment of the present application. The embodiment of the present application provides a waterproof mobile phone 100, including: a front shell 1, the front shell 1 includes a front shell 1 bottom plate and a front shell 1 side wall, one end of the front shell 1 side wall is connected to the front shell 1 bottom plate and is arranged around the edge of the front shell 1 bottom plate, the front shell 1 bottom plate and the front shell 1 side wall are arranged to form an accommodating cavity 1a, a sealing surface 1b is formed on the side of the front shell 1 side wall away from the front shell 1 bottom plate, and a first mounting groove 13 is formed on the sealing surface 1b; a flexible circuit board 2, the flexible circuit board 2 includes a flexible circuit board body 21 and a connecting portion 22 connected to the flexible circuit board body 21, the flexible circuit board body 21 is arranged on the outer surface of the side wall of the front shell 1, and the connecting portion 22 extends into the accommodating cavity 1a through the first mounting groove 13.

[0041] As an important component of the mobile phone, the front cover 1 has a certain strength and hardness, which can effectively resist external impacts and collisions, and protect the electronic components inside the waterproof mobile phone 100 from damage. At the same time, the front cover 1 can also protect the electronic components inside the waterproof mobile phone 100 from being damaged by substances such as dust and moisture, thereby extending the service life of the waterproof mobile phone 100.

[0042] One end of the side wall of the front housing 1 is connected to the bottom plate of the front housing 1 and is positioned around the edge of the bottom plate of the front housing 1. The bottom plate and side walls of the front housing 1 together form a housing cavity 1a, which provides space for installing and securing the electronic components, battery, and other components within the phone. A sealing surface 1b is formed on the side of the side wall of the front housing 1 away from the bottom plate of the front housing 1. This sealing surface 1b is designed to mate with and seal against other components of the waterproof phone 100, preventing dust, moisture, and other substances from entering the housing cavity 1a and damaging the electronic components within the waterproof phone 100.

[0043] Specifically, a first mounting groove 13 is formed on the sealing surface 1b. The first mounting groove 13 can be pre-set on the sealing surface 1b of the front housing 1 during the manufacture of the front housing 1. This avoids CNC machining of the front housing 1 after it has been machined, thereby reducing the production cost of the front housing 1 and, consequently, the production cost of the waterproof mobile phone 100. Furthermore, the number of first mounting grooves 13 on the sealing surface 1b can be determined based on actual production conditions and is not limited in this embodiment of the present application.

[0044] The flexible circuit board 2 efficiently transmits electrical signals and data, ensuring normal communication and operation between the components within the waterproof phone 100. The flexible circuit board 2 transmits external signals (such as electrical signals, keystroke signals, and fingerprint information) to the processing unit within the waterproof phone 100, ensuring the normal operation of the waterproof phone 100.

[0045] It can be understood that the flexible circuit board 2 has the characteristics of being bendable and foldable, and can adapt to the complex spatial layout of the waterproof mobile phone 100, so as to make the internal layout of the waterproof mobile phone 100 more reasonable, and realize the miniaturization of the waterproof mobile phone 100 while ensuring the functions of the waterproof mobile phone 100.

[0046] The flexible circuit board 2 includes a flexible circuit board body 21 and a connecting portion 22 connected to the flexible circuit board body 21. The flexible circuit board body 21 is arranged on the outer surface of the side wall of the front shell 1. The connecting portion 22 extends into the accommodating cavity 1a through the first mounting groove 13. After the connecting portion 22 passes through the first mounting groove 13, it can be connected to other circuit boards, batteries, sensors and other electronic components inside the waterproof mobile phone 100, thereby realizing various functions of the waterproof mobile phone 100.

[0047] Optionally, the flexible circuit board 2 and the front shell 1 can be connected with silicone glue, double-sided tape, hot melt glue or other adhesives to ensure the connection and sealing between the flexible circuit board 2 and the front shell 1, and prevent impurities such as dust and moisture from entering the accommodating cavity 1a through the gap between the flexible circuit board 2 and the front shell 1, affecting the normal operation of the waterproof mobile phone 100.

[0048] In this way, the waterproof mobile phone 100 provided in the embodiment of the present application can extend the connection portion 22 of the flexible circuit board 2 through the first mounting groove 13 into the accommodating cavity 1a, so that the connection portion 22 is connected to other processing units within the waterproof mobile phone 100, thereby achieving normal operation of the waterproof mobile phone 100. At the same time, the connection portion 22 of the flexible circuit board 2 passing through the first mounting groove 13 can avoid the problem of reduced strength of the front shell 1 caused by opening a hole in the front shell 1. In addition, the first mounting groove 13 is integrally formed with the front shell 1, avoiding the problem of high production costs caused by CNC machining. The waterproof mobile phone 100 provided in the embodiment of the present application can reduce production costs and production difficulty while ensuring the waterproof effect and functional operation of the waterproof mobile phone 100.

[0049] See also Figure 3 and Figure 4 , Figure 3 This is the third structural diagram of the waterproof mobile phone 100 provided in the embodiment of the present application. Figure 4 This is a fourth structural diagram of a waterproof phone 100 according to an embodiment of the present application. In some embodiments, the waterproof phone 100 further includes a first sealant 3, which is filled in the first mounting groove 13. The first sealant 3 is used to secure the connection portion 22 to the first mounting groove 13 and fill the gap between the connection portion 22 and the first mounting groove 13.

[0050] The connecting portion 22 is connected to the first mounting groove 13 by a first sealant 3 , which can prevent dust, moisture and impurities from entering the accommodating cavity 1a through the gap between the connecting portion 22 and the first mounting groove 13 while bonding the connecting portion 22 and the first mounting groove 13 .

[0051] Specifically, the first sealant 3 has fluidity, that is, when connecting the first mounting groove 13 and the connecting part 22, it is only necessary to add the first sealant 3 to the gap around the first mounting groove 13 and the connecting part 22. The first sealant 3 can fill the gap between the connecting part 22 and the first mounting groove 13 through its own fluidity, thereby achieving sealing and waterproofing between the first mounting groove 13 and the connecting part 22. The fluidity of the first sealant 3 reduces the difficulty of the installation process of the connecting part 22 and the first mounting groove 13 and improves the sealing effect between the first mounting groove 13 and the connecting part 22.

[0052] Optionally, the first sealant 3 can be a sealant such as silicone sealant, polyurethane sealant, acrylate sealant, or epoxy resin sealant that can connect and seal the first mounting groove 13 and the connecting portion 22. Silicone sealant is suitable for sealing in various environmental conditions due to its good weather resistance, water resistance, and chemical corrosion resistance.

[0053] See also Figure 5 and Figure 6 , Figure 5 This is the fifth structural diagram of the waterproof mobile phone 100 provided in the embodiment of the present application. Figure 6 for Figure 5 In some embodiments, the connecting portion 22 includes a first bent portion 221 and a second bent portion 222 connected in sequence, the first bent portion 221 is bonded to the first mounting groove 13, and the second bent portion 222 is bonded to the inner surface of the side wall of the front housing 1.

[0054] The first bend 221 connects to the flexible circuit board body 21, and the first mounting portion is bonded to the first mounting groove 13. The second bend 222 connects to the first bend 221 and is bonded to the inner surface of the side wall of the front housing 1. The second bend 222 allows the connecting portion 22 to form a natural curve in space, adapting to the complex internal layout of the waterproof phone 100. This allows the flexible circuit board 2 to connect to other processing units within the waterproof phone 100 and achieve signal transmission.

[0055] Specifically, the first bent portion 221 and the first mounting groove 13, and the second bent portion 222 and the inner surface of the side wall of the front shell 1 can be connected using the first sealant 3, so that the first bent portion 221 and the second bent portion 222 can maintain a stable position during use, and will not shake or fall off due to external force impact, thereby ensuring the reliability of the functional operation of the waterproof mobile phone 100.

[0056] In this way, the setting of the first bending portion 221 and the second bending portion 222 can make the flexible circuit board 2 cooperate with the structure of the front shell 1, realize the reasonable coordination of the flexible circuit board 2 and the internal components of the accommodating cavity 1a, make the internal layout of the waterproof mobile phone 100 more reasonable, reduce the space occupied by the waterproof mobile phone 100, ensure the function of the waterproof mobile phone 100 while realizing the miniaturization of the waterproof mobile phone 100.

[0057] See also Figure 6 In some embodiments, a second mounting groove 14 is formed on the inner surface of the side wall of the front shell 1, and the second bent portion 222 is bonded to the second mounting groove 14 so that the second bent portion 222 will not protrude from the inner surface of the side wall of the front shell 1 when it is in contact with the inner surface of the side wall of the front shell 1. That is, when the second bent portion 222 is bonded to the second mounting groove 14, the surface of the second bent portion 222 will remain flush with the inner surface of the side wall of the front shell 1 and will not protrude outward.

[0058] In this way, the internal structure of the front shell 1 can remain flat, and the protrusion of the second bent portion 222 will not cause space waste or interfere with other components inside the waterproof mobile phone 100, thereby ensuring the regularity of the internal structure and layout of the waterproof mobile phone 100.

[0059] See also Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the structure of the insulating layer 5 provided in an embodiment of the present application. Figure 8 This is a schematic diagram of the exploded structure of the waterproof mobile phone 100 provided in an embodiment of the present application. In some embodiments, the waterproof mobile phone 100 also includes: a middle frame 4, the middle frame 4 includes a middle frame 4 bottom plate and a middle frame 4 side wall, the middle frame 4 bottom plate abuts the sealing surface 1b, the middle frame 4 side wall is sleeved on the front shell 1 side wall, and the flexible circuit board body 21 is located between the middle frame 4 side wall and the front shell 1 side wall; an insulating layer 5, the insulating layer 5 is arranged between the middle frame 4 bottom plate and the sealing surface 1b.

[0060] The middle frame 4 is a key support component for the internal structure of the waterproof phone 100. It connects various parts of the phone, such as the display, battery, and motherboard, ensuring that the various components of the waterproof phone 100 are stably installed within the waterproof phone 100. The middle frame 4 effectively secures the front cover 1, back cover, and other internal components of the phone, preventing them from loosening or deforming when subjected to external forces.

[0061] The middle frame 4 includes a middle frame 4 bottom plate and a middle frame 4 side wall. The middle frame 4 side wall is arranged around the middle frame 4 bottom plate. The middle frame 4 bottom plate abuts against the sealing surface 1b on the front shell 1, so that the accommodating cavity 1a formed by the front shell 1 side wall and the front shell 1 bottom plate forms a closed environment, preventing external dust, moisture and other impurities from affecting the operation of the circuit board, mainboard and other components in the accommodating cavity 1a.

[0062] Specifically, the sidewalls of the middle frame 4 are nested within the sidewalls of the front housing 1, with the flexible circuit board 21 positioned between them. This nesting relationship provides a stable mounting environment for the flexible circuit board 21. This prevents the flexible circuit board 21 from shifting or falling out when subjected to external forces, and also ensures the stability of the flexible circuit board 2 within the waterproof phone 100.

[0063] The primary function of the insulating layer 5 is to provide electrical isolation. Disposing the insulating layer 5 between the bottom plate of the middle frame 4 and the sealing surface 1b prevents current from flowing between the two surfaces, thereby preventing short circuits, electric shocks, and other electrical failures. Furthermore, the insulating layer 5 forms a barrier, preventing moisture and dust from penetrating the interior of the waterproof phone 100, thereby maintaining stable performance.

[0064] Optionally, the insulating layer 5 may be a thin film such as a polyester film or a polyimide film that can insulate, which is not limited in the embodiment of the present application.

[0065] See also Figure 8 In some embodiments, the waterproof mobile phone 100 further includes: a second sealant 6, which is disposed between the insulating layer 5 and the bottom plate of the middle frame 4, and is used to connect the insulating layer 5 and the bottom plate of the middle frame 4.

[0066] The insulating layer 5 and the bottom plate of the middle frame 4 are connected by a second sealant 6. The second sealant 6 can prevent dust, moisture and impurities from entering the accommodating cavity 1a through the gap between the insulating layer 5 and the bottom plate of the middle frame 4 while bonding the insulating layer 5 and the bottom plate of the middle frame 4.

[0067] Specifically, the second sealant 6 is disposed around the bottom plate of the middle frame 4 to eliminate any dead angles between the bottom plate of the middle frame 4 and the insulating layer 5, thereby ensuring a stable connection and good sealing between the insulating layer 5 and the bottom plate of the middle frame 4. Furthermore, the second sealant 6 connecting the bottom plate of the middle frame 4 and the insulating layer 5 ensures that the insulating layer 5 effectively insulates the middle frame 4, thereby preventing short circuits, electric shocks, or other electrical failures.

[0068] Optionally, the second sealant 6 can be a sealant such as foam sealant, silicone sealant, polyurethane sealant, epoxy resin sealant, etc., which can bond the insulating layer 5 and the bottom plate of the middle frame 4 and seal the gap between the insulating layer 5 and the bottom plate of the middle frame 4.

[0069] See also Figure 8 In some embodiments, the waterproof mobile phone 100 further includes: a back cover 7 , which is connected to the middle frame 4 ; a third sealant 8 , which is disposed between the middle frame 4 and the back cover 7 , and the third sealant 8 can seal and fix the back cover 7 to the middle frame 4 .

[0070] The back cover 7 covers the internal components of the waterproof phone 100, forming a protective layer that prevents dust, moisture, and other foreign matter from entering the waterproof phone 100, thereby protecting key components such as the circuit board, battery, and camera within the waterproof phone 100 from damage. Furthermore, the tight connection between the back cover 7 and the middle frame 4 enhances the overall structural strength of the phone.

[0071] The middle frame 4 and the back cover 7 are connected by a third sealant 8. The third sealant 8 can prevent dust, moisture, and impurities from entering the accommodating cavity 1a through the gap between the middle frame 4 and the back cover 7. Optionally, the third sealant 8 can be a foam sealant, a silicone sealant, a polyurethane sealant, an epoxy resin sealant, or other sealant that can bond the middle frame 4 and the back cover 7 and seal the gap between them.

[0072] See also Figure 9 , Figure 9 This is a structural schematic diagram of the flexible circuit board 2 provided in an embodiment of the present application. In some embodiments, the flexible circuit board 2 includes a plurality of connecting portions 22, and a plurality of first mounting grooves 13 are formed on the sealing surface 1b corresponding to the plurality of connecting portions 22. Each connecting portion 22 extends into the accommodating cavity 1a through the first mounting groove 13 corresponding thereto.

[0073] The number of connecting portions 22 provided on the flexible circuit board 2 can be set based on the functional requirements of the waterproof mobile phone 100, and the flexible circuit board 2 can include multiple connecting portions 22. The number and position of the first mounting slots 13 correspond to the number and position of the connecting portions 22, so that each connecting portion 22 can extend into the accommodating cavity 1a through the corresponding first mounting slot 13, thereby ensuring the uniformity of the internal structure of the waterproof mobile phone 100.

[0074] See also Figure 8 In some embodiments, there are multiple flexible circuit boards 2, and the multiple flexible circuit boards 2 are arranged around the side wall of the front shell 1. The sealing surface 1b is respectively provided with multiple first mounting grooves 13 at positions corresponding to the multiple flexible circuit boards 2. The connecting portion 22 of each flexible circuit board 2 extends into the accommodating cavity 1a through the corresponding first mounting groove 13.

[0075] It can be understood that a plurality of flexible circuit boards 2 can be provided around the outer surface of the side wall of the front shell 1. The position of the flexible circuit boards 2 provided on the outer surface of the side wall of the front shell 1 can be set according to the arrangement of the electronic components inside the waterproof mobile phone 100, so as to make the connection between the flexible circuit boards 2 and the electronic components inside the waterproof mobile phone 100 more direct, thereby preventing the problem of performance degradation of the waterproof mobile phone 100 due to wiring confusion.

[0076] At the same time, the multiple flexible circuit boards 2 can correspond to different functions of the waterproof mobile phone 100, so that the functions of the waterproof mobile phone 100 are more comprehensive, thereby improving the user experience when using the waterproof mobile phone 100.

[0077] In some embodiments, the flexible circuit board 2 includes an antenna circuit board, a fingerprint circuit board, and a side key circuit board, so that the antenna function, fingerprint function, and side key function of the waterproof mobile phone 100 can operate normally.

[0078] As an optional embodiment, when dispensing the first sealant 3, the width of the dispensing can be 1.1 mm, and the length of the dispensing can be 2.65 mm. The width of the connection portion 22 of the flexible circuit board 2 can be 2 mm. In actual production, the width of the connection portion 22 can be determined based on the number of feed points on the flexible circuit board 2. The contact height between the flexible circuit board 2 and the side wall of the front shell 1 can be 5.08 mm. In actual production, the contact height between the flexible circuit board 2 and the side wall of the front shell 1 can be determined based on the thickness of the waterproof mobile phone 100. The depth of the second mounting groove 14 can be 0.1 mm, and the width of the second mounting groove 14 can be 2.65 mm.

[0079] It can be understood that when installing the waterproof mobile phone 100, the flexible circuit board 2 is first installed on the outer surface of the side wall of the front shell 1, and then the first sealant 3 is applied between the connecting portion 22 of the flexible circuit board 2 and the first installation groove 13. The insulating layer 5 is attached to the sealing surface 1b within a predetermined time. After the sealing surface 1b is pressurized, the middle frame 4 with the second sealant 6 is installed on the insulating layer 5 and the front shell 1, and finally the back cover 7 is set on the middle frame 4 using the third sealant 8.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A waterproof mobile phone, characterized in that: include: A front shell, the front shell comprising a front shell bottom plate and a front shell side wall, one end of the front shell side wall being connected to the front shell bottom plate and arranged around an edge of the front shell bottom plate, the front shell bottom plate and the front shell side wall forming a receiving cavity, a sealing surface being formed on a side of the front shell side wall away from the front shell bottom plate, and a first mounting groove being formed on the sealing surface; A flexible circuit board includes a flexible circuit board body and a connecting portion connected to the flexible circuit board body. The flexible circuit board body is arranged on the outer surface of the front shell side wall, and the connecting portion extends into the accommodating cavity through the first mounting groove.

2. The waterproof mobile phone according to claim 1, characterized in that: The waterproof mobile phone also includes: A first sealant is filled in the first installation groove, and the first sealant is used to fix the connecting portion to the first installation groove and fill the gap between the connecting portion and the first installation groove.

3. The waterproof mobile phone according to claim 1, characterized in that: The connecting portion includes a first bending portion and a second bending portion connected in sequence, the first bending portion is bonded into the first mounting groove, and the second bending portion is bonded to the inner surface of the front shell side wall.

4. The waterproof mobile phone according to claim 3, characterized in that: A second mounting groove is formed on the inner surface of the front shell side wall, and the second bent portion is bonded into the second mounting groove.

5. The waterproof mobile phone according to claim 1, characterized in that: The waterproof mobile phone also includes: a middle frame, the middle frame comprising a middle frame bottom plate and a middle frame side wall, the middle frame bottom plate abutting against the sealing surface, the middle frame side wall being sleeved on the front shell side wall, and the flexible circuit board body being located between the middle frame side wall and the front shell side wall; An insulating layer is provided between the middle frame bottom plate and the sealing surface.

6. The waterproof mobile phone according to claim 5, characterized in that: The waterproof mobile phone further includes a second sealant, which is disposed between the insulating layer and the middle frame bottom plate, and is used to connect the insulating layer and the middle frame bottom plate.

7. The waterproof mobile phone according to claim 5, characterized in that: The waterproof mobile phone also includes: a back cover connected to the middle frame; A third sealant is provided between the middle frame and the back cover, and is used to seal and fix the back cover to the middle frame.

8. The waterproof mobile phone according to claim 1, characterized in that: The flexible circuit board includes a plurality of connecting parts, and a plurality of first mounting grooves are formed on the sealing surface corresponding to the plurality of connecting parts. Each connecting part extends into the accommodating cavity through the first mounting groove corresponding thereto.

9. The waterproof mobile phone according to claim 1, characterized in that: There are multiple flexible circuit boards, and the multiple flexible circuit boards are arranged around the side wall of the front shell. The sealing surface is respectively provided with multiple first mounting grooves at positions corresponding to the multiple flexible circuit boards, and the connecting portion of each flexible circuit board extends into the accommodating cavity through the corresponding first mounting groove.

10. The waterproof mobile phone according to claim 1, characterized in that: The flexible circuit board includes an antenna circuit board, a fingerprint circuit board and a side key circuit board.

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