A whole machine waterproof intelligent mobile phone

Abstract

The utility model discloses a whole waterproof's smartphone, including the TP cover plate, front shell subassembly, PCBA board, middle frame subassembly and battery cover that set gradually, the first radium carving line circle on the front frame of front shell subassembly is glued with TP cover plate and carries out the point gum seal, and PCBA board is installed at the back of front shell subassembly, and the second radium carving line circle on the back frame of front shell subassembly is bonded with the front frame of middle frame subassembly and seals, and the back of middle frame subassembly is bonded with battery cover and seals, and the FPC point gum groove of each antenna on front shell subassembly is glued and seals, and the earphone loudspeaker spare of two unifications is fixed in the sound cavity of front shell subassembly through dustproof waterproof spare. The line of radium carving can increase surface adhesion, improve the adhesion of glue layer after the point gum, and the FPC point gum groove of each antenna is directly glued and sealed, and the glue layer can isolate outside to realize waterproof dustproof, and can increase the pasting of antenna and front shell subassembly. Dustproof waterproof spare is used for waterproof dustproof protection to earphone loudspeaker spare.

Description

Technical Field

[0001] This utility model relates to the field of electronic technology, and in particular to a fully waterproof smartphone. Background Technology

[0002] Dust and water resistance (IP68 protection rating) is a growing trend in smartphone development and is increasingly favored by users. Smartphones have various components, such as antennas, speakers, earpieces, side buttons, and fingerprint recognition modules on the front casing; and camera modules on the mid-frame and battery cover. Current antenna waterproofing often uses a combination of sealing rings and gaskets. An O-ring is placed at the perforation where the antenna passes through the front casing, filling the gap through compression deformation. This method is also suitable for waterproofing SIM card trays and charging ports. However, with long-term use, the sealing rings inevitably age, harden, lose elasticity, or crack, leading to reduced sealing performance. In earpiece waterproofing designs, the earpiece and speaker are simply integrated into a single unit. Due to the increased overall size, the corresponding speaker cavity inside the phone casing also becomes larger. Although a waterproof coating is applied to the entire surface of the speaker, the gap between the cavity and the speaker's output hole is neglected, resulting in poor dust and water resistance and failing to meet the simultaneous requirements of dust and water resistance.

[0003] In addition, the frame of the front shell assembly is bonded to the screen lens and the back shell assembly by a ring of waterproof adhesive. However, the frame of the front shell assembly is relatively smooth, and after long-term use, the adhesion of the waterproof adhesive weakens, which will also affect the sealing effect.

[0004] Therefore, the existing technology still needs to be improved and enhanced. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a fully waterproof smartphone to solve the problem that the waterproof sealing effect of the front shell assembly and earpiece speaker of existing smartphones will weaken after long-term use.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A fully waterproof smartphone includes a TP cover, a front shell assembly, a PCBA board, a mid-frame assembly, and a battery cover arranged sequentially. A first laser-engraved ring on the front edge of the front shell assembly is sealed with adhesive to the TP cover. The PCBA board is mounted on the back of the front shell assembly. A second laser-engraved ring on the back edge of the front shell assembly is bonded and sealed to the front edge of the mid-frame assembly. The back of the mid-frame assembly is bonded and sealed to the battery cover. FPC adhesive grooves for each antenna on the front shell assembly are sealed with adhesive. A two-in-one earpiece speaker is fixed inside the sound cavity of the front shell assembly using dustproof and waterproof components.

[0007] In the aforementioned waterproof smartphone, the bezels on both sides of the front shell assembly are laser-engraved one or more times clockwise or counterclockwise using a UV laser engraving machine.

[0008] In the aforementioned waterproof smartphone, the antennas on the front shell assembly include a first antenna and a second antenna located at the top, a third antenna located at the bottom, and a fourth antenna located on the side. The first antenna body of the first antenna is provided with two first FPC adhesive grooves; the second antenna body of the second antenna is provided with one second FPC adhesive groove; the third antenna body of the third antenna is provided with three third FPC adhesive grooves; and the fourth antenna body of the fourth antenna is provided with one fourth FPC adhesive groove.

[0009] In the aforementioned waterproof smartphone, a speaker outlet is provided on one side of the sound cavity of the front shell assembly, and the two-in-one earpiece speaker is fixed inside the sound cavity of the front shell assembly by a dustproof and waterproof component.

[0010] In the aforementioned waterproof smartphone, the dustproof and waterproof components include a dustproof mesh with self-adhesive backing, an earpiece steel plate, and a waterproof foam rubber ring. The dustproof mesh is adhered to the flat surface at the bottom of the sound cavity. The earpiece steel plate covers the entire sound cavity. The edge of the earpiece steel plate is adhered to the first step surface of the outer ring of the flat surface with waterproof adhesive backing. The main body of the earpiece steel plate is adhered to the adhesive backing of the dustproof mesh. One side of the waterproof foam rubber ring is adhered to the second step surface of the sound cavity, and the other side of the waterproof foam rubber ring is adhered to the earpiece speaker component.

[0011] In the aforementioned waterproof smartphone, a camera module is mounted on the mid-frame assembly, and a waterproof sticker is attached to the camera module's mounting bracket. The waterproof sticker has a through hole for exposing the lens.

[0012] In the aforementioned waterproof smartphone, the top of the front shell assembly is provided with a card slot, and a card hole is provided on one side adjacent to the card slot. The card holder passes through the card hole and is inserted into the card slot. A groove is provided on the connector between the card holder cap and the tray. A sealing ring is fitted inside the groove. The sealing ring has an annular protrusion. A first mounting groove is provided at the top and bottom of the card hole opening, respectively, opposite to the annular protrusion. The annular protrusion is inserted into the first mounting groove and is interference-fitted with the first mounting groove.

[0013] In the aforementioned waterproof smartphone, a side button FPC dispensing groove is also provided on the other side of the front shell assembly, including a square side button groove. A long strip-shaped side button through hole is opened in the middle of the side button groove. A connecting end of the side button FPC extends from the middle of the top of one side of the side button groove, bends towards the side button through hole at the bottom, and is electrically connected to the spring contact on the feed point of the internal side button circuit.

[0014] In the aforementioned waterproof smartphone, a speaker silicone ring is provided at the sound outlet on the inner side of the speaker cavity of the front shell assembly. When the speaker box is installed into the speaker cavity, the sound outlet of the speaker box and the speaker silicone ring are interference-fitted.

[0015] In the aforementioned waterproof smartphone, the front shell assembly has an interface hole on its side panel, and a rubber ring is fitted around the outer edge of the USB interface. When the rubber ring is inserted into the interface hole on the panel, it is in an interference fit with the interface hole.

[0016] Compared to existing technologies, this utility model provides a fully waterproof smartphone, comprising a TP cover, a front shell assembly, a PCBA board, a mid-frame assembly, and a battery cover arranged sequentially. A first laser-engraved pattern on the front edge of the front shell assembly is sealed with adhesive to the TP cover. The PCBA board is mounted on the back of the front shell assembly. A second laser-engraved pattern on the back edge of the front shell assembly is bonded and sealed to the front edge of the mid-frame assembly. The back of the mid-frame assembly is bonded and sealed to the battery cover using foam adhesive. The FPC adhesive grooves for each antenna on the front shell assembly are sealed with adhesive. The two-in-one earpiece speaker is fixed inside the sound cavity of the front shell assembly using dustproof and waterproof components. The laser-engraved patterns increase surface adhesion, improve the bonding strength of the adhesive layer after application, and extend the service life of the adhesive layer. Direct adhesive sealing of the FPC adhesive grooves for each antenna not only isolates the external environment for waterproofing and dustproofing but also increases the adhesion between the antenna and the front shell assembly. This solves the problem that the waterproof sealing effect of existing front shell assemblies weakens after long-term use. The dustproof and waterproof component is used to isolate water and dust from the speaker outlet of the earpiece, providing waterproof and dustproof protection for the earpiece speaker; it solves the problem of poor waterproof and dustproof performance of existing two-in-one earpiece speakers. Attached Figure Description

[0017] Figure 1 This is an exploded view of the smartphone provided by this utility model.

[0018] Figure 2 This is a schematic diagram of the front structure of the front shell assembly in the smartphone provided by this utility model.

[0019] Figure 3 This is a schematic diagram of the back structure of the front shell assembly in the smartphone provided by this utility model.

[0020] Figure 4 yes Figure 2 A magnified structural diagram of the middle circle section.

[0021] Figure 5 yes Figure 3 A magnified structural diagram of the middle circle section.

[0022] Figure 6 This is a schematic diagram of the FPC dispensing groove for the antenna on the top of the front shell assembly provided by this utility model.

[0023] Figure 7 This is a schematic diagram of the FPC dispensing groove for the antenna at the bottom of the front shell assembly provided by this utility model.

[0024] Figure 8 This is a schematic diagram of the FPC adhesive groove for the antenna on the side of the front shell assembly provided by this utility model.

[0025] Figure 9 This is a schematic diagram of the FPC dispensing groove for the antenna provided by this utility model.

[0026] Figure 10 This is a structural schematic diagram of the earpiece speaker component in the front shell assembly provided by this utility model.

[0027] Figure 11 This is an exploded view of the dustproof and waterproof component provided by this utility model.

[0028] Figure 12 This is a schematic diagram of the upper sound cavity of the front shell assembly provided by this utility model.

[0029] Figure 13 This is a schematic diagram of the dustproof mesh and waterproof adhesive backing on the front shell assembly provided by this utility model after assembly.

[0030] Figure 14 This is a schematic diagram of the assembled earpiece steel sheet on the front shell assembly provided by this utility model.

[0031] Figure 15 This is a schematic diagram of the waterproof foam rubber ring assembled on the front shell assembly provided by this utility model.

[0032] Figure 16 This is a schematic diagram of the earpiece speaker component assembled on the front shell assembly provided by this utility model.

[0033] Figure 17 This is a schematic diagram of the back of the smartphone and the SIM card tray provided by this utility model.

[0034] Figure 18 This is a schematic diagram of the structure of the card holder and sealing ring provided by this utility model.

[0035] Figure 19 This is a sectional view of the dimensions of the card holder and front shell assembly provided by this utility model after installation.

[0036] Figure 20 This is a cross-sectional view of the structure of the card holder and front shell assembly provided by this utility model after installation.

[0037] Figure 21 This is a schematic diagram of the side key FPC dispensing groove in the front shell assembly provided by this utility model.

[0038] Figure 22 This is a schematic diagram of the fingerprint adhesive groove in the front shell assembly provided by this utility model.

[0039] Figure 23 This is a structural diagram of the front and back sides of the speaker silicone ring provided by this utility model.

[0040] Figure 24 This is an assembly diagram of the speaker silicone ring and speaker box provided by this utility model.

[0041] Figure 25 This is a cross-sectional view of the speaker silicone ring and speaker housing provided by this utility model.

[0042] Figure 26 This is a schematic diagram of the USB interface provided by this utility model.

[0043] Figure 27 This is a schematic diagram of the installation position of the USB interface provided by this utility model.

[0044] Figure 28 This is a cross-sectional view of the USB interface provided by this utility model after installation. Detailed Implementation

[0045] This utility model provides a fully waterproof smartphone. To make the objectives, technical solutions, and advantages of this utility model clearer and more explicit, the following detailed description, with reference to the accompanying drawings and embodiments, further illustrates the utility model. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this utility model.

[0046] Please also refer to Figures 1 to 25 This utility model provides a fully waterproof smartphone, comprising a TP cover glass (Touch Panel Cover Glass) 1, a front shell assembly 2, a PCBA (Printed Circuit Board + Assembly) board 3, a mid-frame assembly 4, and a battery cover 5 arranged sequentially. A first laser-engraved ring 6 on the front edge of the front shell assembly 2 is sealed with adhesive to the TP cover glass 1. The PCBA board 3 is installed on the back of the front shell assembly 1. A second laser-engraved ring 7 on the back edge of the front shell assembly 1 is bonded and sealed to the front edge of the mid-frame assembly 4. The back of the mid-frame assembly 4 is bonded and sealed to the battery cover 5 via a second foam adhesive ring 8. The FPC (Flexible Printed Circuit Board) grooves for each antenna on the front shell assembly 1 are sealed with adhesive. A two-in-one earpiece speaker 9 is fixed inside the sound cavity 25 of the front shell assembly 2 by dustproof and waterproof components.

[0047] Laser-engraved patterns on the frame increase surface adhesion, improve the bonding strength of the adhesive layer after application, extend the service life of the adhesive layer, and enhance the sealing and waterproofing effect of the entire smartphone's outer ring. The FPC adhesive grooves for each antenna are directly sealed with adhesive. The adhesive layer not only isolates the external environment for waterproofing and dustproofing but also covers and fixes important components and solder joints on the FPC, and increases the adhesion between the antenna and the front shell assembly; this solves the problem that the waterproof sealing effect of existing front shell assemblies weakens after long-term use. The dustproof and waterproof component is used to isolate water and dust at the speaker outlet 10 of the earpiece speaker 9, providing waterproof and dustproof protection for the earpiece speaker 9; this solves the problem of poor waterproof and dustproof performance of existing two-in-one earpiece speakers. It should be understood that there are other structural components on the front shell assembly 2, PCBA board 3, and mid-frame assembly 4. Only the structures related to the sealing and waterproofing of this embodiment are described here; other existing structures are not detailed.

[0048] like Figure 2 and Figure 3 As shown, each of the aforementioned laser-engraved patterns is formed by using a UV laser engraving machine to laser-engrave one or more circles clockwise or counterclockwise on the corresponding frame. Adhesive is applied to the first laser-engraved pattern 6 on the front frame of the front housing assembly 2 to seal it to the back frame of the TP cover plate 1. The second laser-engraved pattern 7 on the back frame of the front housing assembly 2 is bonded to the front frame of the middle frame assembly 4 using a first foam adhesive ring 11. Whether using adhesive application or foam adhesive for sealing, the laser-engraved patterns increase surface adhesion and improve the bonding strength of the foam adhesive and the adhesive layer after application. Figure 1 A battery protective film is affixed to the back of the front housing assembly 2. Figure 3 The battery protective film has been removed for easier display.

[0049] The preferred textures for laser engraving are grid patterns or diagonal patterns. Existing laser engraving uses fiber laser marking machines, which are suitable for scenarios where high precision is not required, such as metals and some non-metals. However, when processing fusible materials or heat-sensitive materials, problems such as scorching and deformation may occur. The ultraviolet laser engraving machine used in this embodiment has an extremely small focused spot, reaching 10μm after focusing, enabling finer processing, more delicate marking effects, no pitting, smooth edges, and extremely low carbonization. Furthermore, it has a wider range of applicable materials, including not only metals but also plastics, glass, ceramics, food, and pharmaceutical packaging materials, and is particularly suitable for heat-sensitive materials.

[0050] Preferably, to avoid laser engraving other components, such as... Figure 4 and Figure 5As shown, the front and back frames of the front shell assembly 1 are provided with side guards 12, each approximately 0.8 mm wide and 0.5-1 mm high. After the ultraviolet laser engraving machine recognizes the side guards 12, it engraves in the area enclosed by the side guards 12. The top of the side guards is polished to a glossy surface, creating a color difference with the matte surfaces of other structures, which facilitates recognition by the ultraviolet laser engraving machine.

[0051] Preferably, when the front shell assembly 2 is assembled with the TP cover plate 1, the adhesive layer after dispensing is lower than the retaining edge 12. A plurality of supporting ribs 13 can also be provided at intervals on the front frame of the front shell assembly 2, along the inner side of the retaining edge. The supporting ribs 13 are 0.13mm higher than the top surface of the adhesive layer and lower than the retaining edge. When the TP cover plate 1 is placed on the front of the front shell assembly 2, the adhesive layer on the front shell assembly 2 is bonded to the back frame of the TP cover plate 1. Through the supporting action of the supporting ribs 13, the adhesive layer is limited and supported during bonding and compression, thus preventing excessive compression of the adhesive layer and overflow that could affect other components, without affecting the thickness of the smartphone.

[0052] In this embodiment, the antennas on the front housing assembly 2 include a first antenna and a second antenna located at the top, a third antenna located at the bottom, and a fourth antenna located on the side. Figures 6 to 8 As shown, the first antenna is usually a combined antenna (such as a GPS antenna + 2.4G antenna as one group, and a 5G antenna as another group), and the first antenna body 14 is equipped with two first FPC adhesive grooves 15; the second antenna is usually an MHB (Mid / High Band) main antenna, and the second antenna body 16 is equipped with a second FPC adhesive groove 17; the third antenna is usually a combination of an LB (Low Bands) main antenna and an MHB diversity antenna, and the third antenna body 18 is equipped with three third FPC adhesive grooves 19; the fourth antenna is usually an LB diversity antenna, and the fourth antenna body 20 is equipped with a fourth FPC adhesive groove 21.

[0053] The FPC dispensing grooves for each antenna have the same structure, differing only in length and position. For example... Figure 9 As shown, each FPC dispensing groove includes a square groove 22. A long through hole 23 is opened in the middle of the groove 22, and the through hole 23 exposes the corresponding antenna FPC. One side of the groove 22 is adjacent to the corresponding antenna body, and the other side of the groove 22 is adjacent to the housing of the front shell assembly. A connecting end 24 of the antenna body extends from the top middle of one side of the groove 22, bends towards the through hole 23 at the bottom, and is electrically connected to the spring piece of the corresponding antenna feed point inside.

[0054] Preferably, all four legs of the groove 22 and the through hole 23 are arc-shaped; the dimensions of the groove 22 are 7×1.8×1.0 (length×width×height); the length of the through hole 23 is 0.5mm shorter than that of the groove, and the width is preferably 0.55~0.7mm. If the size of the through hole 23 is too large, it is easy to leak glue; if it is too small, it is not easy to form, which will affect the life of the mold. The above dimensions can be adjusted according to design requirements, and their specific sizes are not limited here.

[0055] During dispensing, the adhesive is injected into the interior of the front shell assembly through the through hole 23 and covers the antenna FPC. After filling, the adhesive then blocks the groove 22 to further bond the connecting end 24 of the antenna body, ensuring a more stable electrical connection between it and the antenna FPC. Once the groove 22 is filled, it can not only completely isolate external moisture and dust, but also increase the adhesion between the antenna body and the front shell assembly.

[0056] In this embodiment, as Figure 10 , Figure 11 and Figure 12 As shown, the speaker outlet 10 is provided on one side of the sound cavity 25 of the front shell assembly 2. The two-in-one earpiece speaker 9 is fixed to the sound cavity 25 of the front shell assembly 2 by a dustproof and waterproof component. The dustproof and waterproof component includes a dustproof mesh 26 with self-adhesive backing, an earpiece steel sheet 27, and a waterproof foam rubber ring 28. The dustproof mesh 26 is fixed to the plane 29 at the bottom of the sound cavity 25. The earpiece steel sheet 27 covers the entire sound cavity. The edge of the earpiece steel sheet 27 is fixed to the first step surface 31 of the outer ring of the plane by waterproof adhesive 30. The main body of the earpiece steel sheet 27 is fixed to the adhesive 33 of the dustproof mesh 26. One side of the waterproof foam rubber ring 28 is fixed to the second step surface 32 of the sound cavity 25, and the other side of the waterproof foam rubber ring 28 is fixed to the earpiece speaker 9.

[0057] by Figure 12 Taking the direction shown as an example, the upper left part of the plane 29 at the bottom of the sound cavity 25 is provided with a first concave surface 34. The first concave surface 34 occupies nearly 1 / 4 of the area of ​​the plane 29. The upper left part of the first concave surface 34 is further concave to form a long strip-shaped second concave surface 35, and the side of the second concave surface 35 is connected to the speaker outlet hole 10. By continuously concave in this way, gaps are left so that sound can be transmitted.

[0058] The first stepped surface 31 surrounding the plane 29 is the bonding surface of the earpiece steel sheet 27, and it is 1-2mm higher than the plane 29. This allows for a certain gap when bonding the earpiece steel sheet 27. Furthermore, to facilitate sound transmission and prevent the earpiece steel sheet 27 from completely blocking the sound cavity, there is no first stepped surface 31 above the second concave surface 35. Therefore, the first stepped surface 31 is a notched ring with a notch in the upper left part. Correspondingly, as... Figure 13 As shown, the shape of the waterproof adhesive 30 is adapted to the first stepped surface 31.

[0059] The second stepped surface 32 of the acoustic cavity 25 is 1-2 mm higher than the first stepped surface 31, and a raised baffle 36 for framing the waterproof foam rubber ring 28 is provided at the edge of the second stepped surface 32. Given the thickness of the waterproof foam rubber ring 28, the position of the baffle 36 is related to the components surrounding the acoustic cavity 25 and the frame of the front shell assembly, such as... Figure 12 As shown, baffles 36 are provided on the upper side, the upper part of the left and right sides, and the middle of the lower side of the second step surface 32. This can prevent the waterproof foam rubber ring 28 from shifting during use and affecting other adjacent devices.

[0060] like Figure 13 As shown, the dustproof net 26 includes four sub-nets 37 and an adhesive backing 33 with four perforated slots. One sub-net 37 is fixed in one perforated slot. The four sub-nets 37 are used to isolate dust at the speaker outlet 10 and can also transmit sound. The waterproof adhesive backing 30 and the adhesive backing 33 are on the same plane and are both used to bond the earpiece steel plate 27. The waterproof adhesive backing 30 mainly bonds the edge of the earpiece steel plate 27, while the adhesive backing 33 mainly bonds the main body of the earpiece steel plate 27. Except for the perforated slots for installing the sub-nets 37, the rest of the adhesive backing 33 is an adhesive surface, which is to maximize the adhesive surface with the earpiece steel plate 27 and, together with the waterproof adhesive backing 30, ensure the firmness of the earpiece steel plate 27.

[0061] like Figure 14 As shown, the earpiece steel sheet 27 has four square holes with positions and sizes matching the sub-net 37, allowing the sub-net 37 to be exposed for sound transmission. The edge of the earpiece steel sheet 27 is bent upwards and then horizontally, forming a vertical bend and a 2mm wide rim 38. The rim 38 overlaps the second stepped surface 32, so that the earpiece steel sheet 27 completely covers the entire sound cavity. Through the sealing and isolation of the earpiece steel sheet 27, dust and moisture are completely prevented from entering the smartphone through the sound cavity, further achieving a waterproof and dustproof effect. Furthermore, the high hardness of the earpiece steel sheet 27 also provides support and protection for the earpiece speaker component 9.

[0062] by Figure 15 Taking the direction shown as an example, the waterproof foam rubber ring 28 has double-sided adhesive. One side (bottom surface) is adhered to the second step surface 32 of the sound cavity 25 and blocks the retaining edge 38 of the earpiece steel plate 27. The other side (top surface) of the waterproof foam rubber ring 28 is adhered to the outer ring of the earpiece speaker component 9, such as... Figure 16 As shown, the assembled earpiece speaker 9 is further waterproofed by the waterproof foam rubber ring 28.

[0063] Preferably, a marking strip 39 can also be provided on the steel plate 27 of the earpiece to identify the direction and prevent mistaken identity.

[0064] Please continue reading. Figure 1 , Figures 17 to 20 The upper back of the mid-frame assembly 4 has a recessed camera module 40. Taking a quad-camera setup as an example, the camera module 40 includes two main cameras 47 arranged vertically on the left and two secondary cameras 48 arranged vertically on the right. A decorative piece 49 is also provided below the main cameras 47, which is used to provide reserved positioning for adding lenses 45 or other functional components in subsequent research and development.

[0065] The upper part of the battery cover 5 is provided with lens holes 42 for exposing the four camera lenses 41 and 45 of the main and secondary cameras. When the battery cover 5 is bonded and sealed with the second foam adhesive ring 8, a third laser-engraved pattern can also be laser-engraved on the back edge of the mid-frame assembly 4. The laser-engraved pattern increases surface adhesion and bonding, ensuring complete waterproofing of the back of the smartphone.

[0066] This embodiment also provides waterproof protection for the camera module 40. A waterproof sticker 44 is attached to the fixture 43 of the camera module 40. The waterproof sticker 44 has a through hole for exposing the lens 45 (its size is adapted to the lens 45, such as...). Figure 1 The device includes four vents (two large and two small) and vents 46 for ventilation of the entire machine. The waterproof sticker 44 can also be made of foam adhesive, which, after being applied, seals and waterproofs the fixture 43 and its internal components.

[0067] The front housing assembly 2 has a slot 50 on its top, and a slot hole 51 is provided on the side of the front housing adjacent to the slot 50. The card holder 52 passes through the slot hole 51 and is inserted into the slot 50. To waterproof the insertion point, a groove 56 is provided on the connector 55 between the card holder cap 53 and the tray 54. A sealing ring 57 with a width W of 1~1.3mm (preferably 1.1mm) is fitted inside the groove 56. The sealing ring 57 has an annular protrusion (bottom thickness D is 0.36mm, height H is 0.33mm). A first mounting groove is provided on the top 58 and bottom 59 of the card hole, respectively, opposite to the annular protrusion. When the card holder 51 is inserted, the annular protrusion is inserted into the first mounting groove and is press-fitted with the first mounting groove to achieve a waterproof sealing effect.

[0068] The annular protrusion is a beveled, elastic arc (e.g., made of silicone). After the card holder 51 is inserted, the bevel facilitates the insertion of the annular protrusion into the first mounting groove. The sealing ring 57 and the annular protrusion are integrally formed. The groove 56 is provided to further fix the sealing ring 57. Compared with the existing method of simply placing the sealing ring on the surface, the limiting effect of the groove 56 can prevent the sealing ring 57 from shifting after long-term deformation. At the same time, the annular protrusion extends into the first mounting groove. Compared with the existing method of only filling the gap between the top 58 and bottom 59 of the card hole and the connector 55, this extension method not only saves material for the sealing ring and provides a tighter seal, but also avoids the problem of gaps caused by deformation after long-term use.

[0069] Preferably, such as Figure 21 As shown, a side key FPC dispensing groove 60 is also provided on the other side of the front shell assembly 2. Its structure is the same as that of the antenna's FPC dispensing groove, including a square side key groove. A long strip-shaped side key through hole 61 is opened in the middle of the side key groove. One end of the side key FPC 62 extends from the middle of the top of one side of the side key groove, bends towards the side key through hole 61 at the bottom, and is electrically connected to the spring contact on the feed point of the internal side key circuit. The dispensing method is the same as that of the antenna, which can waterproof the side key.

[0070] Preferably, such as Figure 22 As shown, on the other side of the front shell assembly 2, below the side button FPC adhesive groove 60, there is also a fingerprint adhesive groove 63. Its structure is modified; the fingerprint adhesive groove 63 is a square through-slot. One connecting end of the fingerprint FPC 75 extends from the middle of the top of one side of the fingerprint adhesive groove 63, bends, and directly passes through the bottom of the fingerprint adhesive groove 63 to electrically connect with the BTB connector of the internal fingerprint circuit. The adhesive dispensing method is the same as that for the antenna, which can waterproof the side button. Because the sensing area of ​​the fingerprint module is large, the entire groove is hollowed out to increase the amount of adhesive injected, thereby increasing the adhesion between the fingerprint module and the front shell assembly.

[0071] Preferably, such as Figure 1 , Figure 23 , Figure 24 and Figure 25As shown, the speaker box 64 located at the lower part of the front housing assembly 2 can also be sealed and waterproofed using an interference fit. A speaker silicone ring 65 is provided at the sound outlet on the inner side of the speaker cavity of the front housing assembly 2. When the speaker box 64 is installed into the speaker cavity, the sound outlet of the speaker box 64 is interference-fitted with the speaker silicone ring 65. The speaker silicone ring 65 includes an inner ring seat 66, preferably made of PET (polyester resin), an outer ring seat 77, and a speaker dustproof mesh 78 disposed between the inner ring seat 66 and the outer ring seat 77. A raised and outwardly inclined silicone ring 67 is provided on one side of the inner ring seat 66. Two elongated first sound holes 76, one large and one small, are opened on the inner ring seat 66, located inside the silicone ring 67. An elongated second sound hole 79 is opened on the outer ring seat 77, and the second sound hole 79 has the same size as the two first sound holes 76 combined. The outer ring seat 77 is fixed (by adhesive or by applying glue to the bottom) at the sound outlet on the inner side of the speaker cavity. like Figure 25 As shown, since the sound outlet is angled, the speaker silicone ring 65 is also angled after being fixed. A second mounting groove, adapted to the silicone ring 67, is provided on the top 68 and bottom 69 of the sound outlet of the speaker housing 64. When the speaker housing 64 is installed, the protruding silicone ring 67 is inserted into the second mounting groove and fits with it, achieving a waterproof seal. Since the opening of the silicone ring 67 is outwardly flared, it is essentially inserted at an angle into the sound outlet of the speaker housing 64, improving both tightness and waterproofing.

[0072] Preferably, such as Figure 1 , Figure 26 , Figure 27 and Figure 28 As shown, the USB interface 70 located at the lower part of the front shell assembly 2 can also be sealed and waterproofed using an interference fit. A body rubber ring 71 is fitted around the outer ring of the USB interface 70. An interface hole 73 is provided on the insertion surface 72 on the side of the front shell assembly 2. When the body rubber ring 71 is inserted into the interface hole 73 on the insertion surface 72, it forms an interference fit with the interface hole 73. For example... Figure 28 As shown, when the arc-shaped portion 74 (shown in the grid) on one side of the body rubber ring 71 is inserted into the interface hole 73, it is squeezed (shown in dashed lines), thus forming an interference fit.

[0073] Preferably, when waterproofing the main and auxiliary microphones on the front housing assembly 1, the two microphones can be glued to the microphone cavity of the front housing assembly 1 with waterproof adhesive, and a waterproof and breathable membrane can be attached to the surface of the two microphones for waterproofing. A nano-coating can be applied to the PCBA board 3 to waterproof the various components and pads on the board.

[0074] In summary, the waterproof smartphone provided by this utility model features textured edges on both sides of the front shell assembly after laser engraving, which increases the adhesive's adhesion. Each antenna has its own FPC adhesive groove for application, completely isolating external moisture and dust while also increasing the adhesion between the antenna and the front shell assembly. The side buttons and fingerprint module each have corresponding adhesive grooves, achieving waterproofing. A dustproof mesh isolates dust and secures the earpiece steel plate. Combined with the sealing and support of the earpiece steel plate, dust and moisture are completely prevented from entering the smartphone through the sound cavity. The waterproof foam rubber ring further enhances the waterproof protection of the earpiece speaker. Different waterproofing methods are used for different functional modules on the front shell assembly, meeting their varying waterproofing needs and solving the problem of weakened waterproof sealing after long-term use in existing smartphones.

[0075] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A fully waterproof smartphone, comprising a TP cover, a front shell assembly, a PCBA board, a mid-frame assembly, and a battery cover arranged sequentially; characterized in that, The first laser-engraved ring on the front edge of the front housing assembly is sealed with adhesive to the TP cover plate. The PCBA board is installed on the back of the front housing assembly. The second laser-engraved ring on the back edge of the front housing assembly is bonded and sealed to the front edge of the middle frame assembly. The back of the middle frame assembly is bonded and sealed to the battery cover. The FPC adhesive grooves of each antenna on the front housing assembly are sealed with adhesive. The two-in-one earpiece speaker is glued to the sound cavity of the front housing assembly through dustproof and waterproof parts.

2. The waterproof smartphone according to claim 1, characterized in that, The frame on both sides of the front shell assembly is laser-engraved with one or more circles clockwise or counterclockwise using a UV laser engraving machine.

3. The waterproof smartphone according to claim 1, characterized in that, The antennas on the front housing assembly include a first antenna and a second antenna located at the top, a third antenna located at the bottom, and a fourth antenna located on the side. The first antenna body of the first antenna is provided with two first FPC adhesive grooves; the second antenna body of the second antenna is provided with one second FPC adhesive groove; the third antenna body of the third antenna is provided with three third FPC adhesive grooves; and the fourth antenna body of the fourth antenna is provided with one fourth FPC adhesive groove.

4. The waterproof smartphone according to claim 1, characterized in that, A speaker outlet is provided on one side of the sound cavity of the front housing assembly, and the two-in-one earpiece speaker is glued to the sound cavity of the front housing assembly by a dustproof and waterproof component.

5. The waterproof smartphone according to claim 4, characterized in that, The dustproof and waterproof components include a dustproof mesh with self-adhesive backing, an earpiece steel plate, and a waterproof foam rubber ring. The dustproof mesh is adhered to the flat surface at the bottom of the sound cavity. The earpiece steel plate covers the entire sound cavity. The edge of the earpiece steel plate is adhered to the first step surface of the outer ring of the flat surface with waterproof adhesive backing. The main body of the earpiece steel plate is adhered to the adhesive backing of the dustproof mesh. One side of the waterproof foam rubber ring is adhered to the second step surface of the sound cavity, and the other side of the waterproof foam rubber ring is adhered to the earpiece speaker component.

6. The waterproof smartphone according to claim 1, characterized in that, The mid-frame assembly is equipped with a camera module, and a waterproof sticker is attached to the camera module's fixture. The waterproof sticker has a through hole for exposing the lens.

7. The waterproof smartphone according to claim 1, characterized in that, The front housing assembly has a slot at the top and a hole on one side adjacent to the slot. The card holder passes through the hole and is inserted into the slot. A groove is provided on the connector between the card holder cap and the tray. A sealing ring is fitted inside the groove. The sealing ring has an annular protrusion. A first mounting groove is provided at the top and bottom of the opening of the card hole, respectively, opposite to the annular protrusion. The annular protrusion is inserted into the first mounting groove and is press-fitted with the first mounting groove.

8. The waterproof smartphone according to claim 1, characterized in that, The other side of the front shell assembly is also provided with a side key FPC dispensing groove, including a square side key groove. A long strip-shaped side key through hole is opened in the middle of the side key groove. A connecting end of the side key FPC extends from the middle of the top of one side of the side key groove, bends towards the side key through hole at the bottom, and is electrically connected to the spring contact on the feed point of the internal side key circuit.

9. The waterproof smartphone according to claim 1, characterized in that, A speaker silicone ring is provided at the sound outlet on the inner side of the speaker cavity of the front shell assembly. When the speaker box is installed into the speaker cavity, the sound outlet of the speaker box and the speaker silicone ring are interference-fitted.

10. The waterproof smartphone according to claim 1, characterized in that, The front shell assembly has an interface hole on its side. A rubber ring is fitted around the outer edge of the USB interface port. When the rubber ring is inserted into the interface hole on the interface surface, it is in an interference fit with the interface hole.

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