A waterproof smartphone with a front housing assembly

Abstract

The utility model discloses a front shell subassembly waterproof's smartphone, including front shell subassembly, TP cover plate and middle shell subassembly, the frame of front shell subassembly two sides is etched with the grain, and the grain on the front is sealed through the dispensing with the back of TP cover plate a circle frame, and the grain on the back is sealed through the dispensing with the front of middle shell subassembly a circle frame, and the FPC dispensing groove of each antenna on the front shell subassembly is sealed. The grain of etching can increase surface adhesion, improve the adhesion of glue layer after dispensing, prolong the service life of glue layer, and the FPC dispensing groove of each antenna is sealed directly, and the glue layer can isolate outside to realize waterproof dustproof, and can increase the adhesion of antenna and front shell subassembly. Solveed the problem that the waterproof sealing effect of existing front shell subassembly will be weakened after long -term use.

Description

Technical Field

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

[0002] Dust and water resistance (IP68 protection rating) is a growing trend in smartphone development and is increasingly favored by users. The front cover assembly typically houses modules such as antennas, side buttons, and fingerprint recognition. For antenna waterproofing, a combination of sealing rings and gaskets is often used. An O-ring is placed at the perforation where the antenna passes through the front cover, filling the gap through compression deformation. This method is also suitable for waterproofing SIM card trays and charging ports. However, with prolonged use, the sealing rings inevitably age, hardening, losing elasticity, or cracking, leading to reduced sealing performance. The frame of the front cover assembly is bonded to the screen lens and back cover assembly with a waterproof adhesive ring. However, the frame of the front cover assembly is relatively smooth, and over time, the adhesion of the waterproof adhesive weakens, also affecting the sealing effect.

[0003] Therefore, existing technologies still need to be improved and enhanced. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a smartphone with a waterproof front shell assembly to solve the problem that the waterproof sealing effect of the existing front shell assembly will weaken after long-term use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A waterproof front shell smartphone includes a front shell assembly, a TP cover plate, and a middle shell assembly; wherein, the edges of both sides of the front shell assembly are laser-engraved with textures, the textures on the front are sealed to the back edge of the TP cover plate by adhesive, and the textures on the back are sealed to the front edge of the middle shell assembly by adhesive; the FPC adhesive grooves of each antenna on the front shell assembly are sealed by adhesive.

[0006] In the aforementioned waterproof smartphone front shell assembly, 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.

[0007] In the aforementioned waterproof smartphone front shell assembly, the front shell assembly has side guards on both sides of its frame; the top of the side guards is polished to form a smooth surface, which is used for engraving in the area enclosed by the side guards after being identified by a UV laser engraving machine.

[0008] In the aforementioned waterproof smartphone front shell assembly, the TP cover plate covers the front of the front shell assembly, and the adhesive layer on the front shell assembly is bonded to the frame on the back of the TP cover plate; a number of support bones are spaced apart along the inner side of the edge, and the support bones are used to limit and support the adhesive layer during bonding and compression.

[0009] In the aforementioned waterproof smartphone front shell assembly, 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.

[0010] In the aforementioned waterproof front shell assembly of a smartphone, each FPC dispensing groove includes a square groove with an elongated through hole in the middle of the groove. One connecting end of the antenna body extends from the top middle of one side of the groove, bends towards the through hole at the bottom, and is electrically connected to the internal antenna FPC.

[0011] In the aforementioned waterproof smartphone front shell assembly, the four feet of the groove and through hole are arc-shaped.

[0012] In the aforementioned waterproof smartphone front shell assembly, 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, and 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.

[0013] In the aforementioned waterproof smartphone front shell assembly, a fingerprint adhesive groove is also provided on the other side of the front shell assembly, below the side button FPC adhesive groove. The fingerprint adhesive groove is a square through groove. One end of the fingerprint FPC extends from the middle of the top of one side of the fingerprint adhesive groove, bends, passes through the bottom of the fingerprint adhesive groove, and is electrically connected to the BTB connector of the internal fingerprint circuit.

[0014] Compared to existing technologies, this utility model provides a waterproof smartphone front shell assembly, including a front shell assembly, a TP cover plate, and a middle shell assembly. The front shell assembly has laser-engraved textures on both sides of its frame. The textures on the front are sealed to the back edge of the TP cover plate via adhesive application, and the textures on the back are sealed to the front edge of the middle shell assembly via adhesive application. Adhesive is also applied to the FPC adhesive grooves of each antenna on the front shell assembly for sealing. The laser-engraved textures increase surface adhesion, improve the bonding strength of the adhesive layer after application, and extend the service life of the adhesive layer. Direct adhesive application sealing to the FPC adhesive grooves of 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. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure of the front shell assembly in the smartphone provided by this utility model.

[0016] Figure 2 This is a schematic diagram of the back structure of the front shell assembly in the smartphone provided by this utility model.

[0017] Figure 3 yes Figure 1 A magnified structural diagram of the middle circle section.

[0018] Figure 4 yes Figure 2 A magnified structural diagram of the middle circle section.

[0019] Figure 5 This is a schematic diagram of the assembly of the front shell assembly and the TP cover plate provided by this utility model.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] Figure 9 This is a schematic diagram of the FPC dispensing groove for the antenna provided by this utility model.

[0024] Figure 10 This is a schematic diagram of the side key FPC dispensing groove in the front shell assembly provided by this utility model.

[0025] Figure 11 This is a schematic diagram of the fingerprint adhesive groove in the front shell assembly provided by this utility model. Detailed Implementation

[0026] This utility model provides a waterproof front shell assembly for a 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.

[0027] Please also refer to Figures 1 to 11This utility model provides a waterproof smartphone front shell assembly, including a front shell assembly 1, a TP cover glass (Touch Panel Cover Glass) 2, and a middle shell assembly (not shown in the figure). The front shell assembly 1 has laser-engraved textures 3 on both sides of its frame. The textures on the front are sealed to the back edge of the TP cover glass 2 via adhesive, and the textures on the back are sealed to the front edge of the middle shell assembly via adhesive. Adhesive is also applied to the FPC (Flexible Printed Circuit) grooves for each antenna on the front shell assembly 1 for sealing. The laser-engraved textures 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 grooves for each antenna 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.

[0028] In the specific laser engraving process, a UV laser engraving machine is used to engrave one or more circles clockwise or counterclockwise around the edges of both sides of the front shell component 1. The engraved texture is preferably a grid pattern or a diagonal pattern. Existing laser engraving uses fiber laser marking machines, which are suitable for scenarios where the precision requirements are not extremely high, such as metals and some non-metals. However, if processing fusible materials or heat-sensitive materials, problems such as scorching and deformation may occur. The UV laser engraving machine used in this embodiment has an extremely small focused spot, which can reach 10μm after focusing, enabling more precise processing, a more delicate marking effect, no pitting in the texture, smooth edges, and extremely low carbonization. Moreover, it has a wider range of applicable materials, including not only metals but also plastics, glass, ceramics, food, and pharmaceutical packaging materials, and is especially suitable for heat-sensitive materials.

[0029] Preferably, to avoid engraving other components during laser engraving, the front shell assembly 1 has side guards 4 with a width of about 0.8 mm and a height of about 0.5~1 mm on both sides of the frame. After the ultraviolet laser engraving machine recognizes the side guards 4, it engraves in the area enclosed by the side guards 4. The top of the side guards is polished to a glossy surface, which creates a color difference with the matte surface of other structures, thus facilitating recognition by the ultraviolet laser engraving machine.

[0030] The assembly of the front shell assembly 1 and the TP cover plate 2 is as follows: Figure 5 As shown, the adhesive layer after application is lower than the retaining edge 4. Several supporting ribs 18 can also be spaced along the inner side of the retaining edge. Each supporting rib 18 is 0.13mm higher than the top surface of the adhesive layer and lower than the retaining edge. When the TP cover plate 2 is placed on the front of the front shell assembly 1, the adhesive layer on the front shell assembly 1 is bonded to the frame on the back of the TP cover plate 2. The supporting ribs 18 provide support and limit the adhesive layer during bonding and compression, preventing excessive compression that could cause overflow and affect other components, without affecting the thickness of the smartphone.

[0031] In this embodiment, the antennas on the front housing assembly 1 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 main body 5 of the first antenna is equipped with two first FPC adhesive grooves 6; the second antenna is usually an MHB (Mid / High Band) main antenna, and the main body 7 of the second antenna is equipped with a second FPC adhesive groove 8; the third antenna is usually a combination of an LB (Low Bands) main antenna and an MHB diversity antenna, and the main body 9 of the third antenna is equipped with three third FPC adhesive grooves 10; the fourth antenna is usually an LB diversity antenna, and the main body 11 of the fourth antenna is equipped with a fourth FPC adhesive groove 12.

[0032] 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 51. A long through hole 52 is opened in the middle of the groove 51, and the through hole 52 exposes the corresponding antenna FPC. One side of the groove 51 is adjacent to the corresponding antenna body, and the other side of the groove 51 is adjacent to the housing of the front shell assembly. A connecting end 53 of the antenna body extends from the top middle of one side of the groove 51, bends towards the through hole 52 at the bottom, and is electrically connected to the spring piece of the corresponding antenna feed point inside.

[0033] Preferably, all four legs of the groove 51 and the through hole 52 are arc-shaped; the dimensions of the groove 51 are 7×1.8×1.0 (length×width×height); the length of the through hole 52 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 52 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.

[0034] During dispensing, the adhesive is injected into the interior of the front housing assembly through the through hole 52 and covers the antenna FPC. After filling, the adhesive then blocks the groove 51 to further bond the connecting end 53 of the antenna body, ensuring a more stable electrical connection between it and the antenna FPC. Once the groove 51 is filled, it can not only completely isolate external moisture and dust, but also increase the adhesion between the antenna body and the front housing assembly.

[0035] Preferably, such as Figure 10As shown, a side key FPC dispensing groove 13 is also provided on the other side of the front shell assembly 1. Its structure is the same as that of the antenna FPC dispensing groove, including a square side key groove. A long strip-shaped side key through hole 14 is opened in the middle of the side key groove. One end of the side key FPC 15 extends from the middle of the top of one side of the side key groove, bends towards the side key through hole 14 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.

[0036] Preferably, such as Figure 11 As shown, on the other side of the front shell assembly 1, below the side button FPC adhesive groove 13, there is also a fingerprint adhesive groove 16. Its structure is modified; the fingerprint adhesive groove 16 is a square through groove. One end of the fingerprint FPC 17 extends from the middle of the top of one side of the fingerprint adhesive groove 16, bends, and directly passes through the bottom of the fingerprint adhesive groove 16 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, thus increasing the adhesion between the fingerprint module and the front shell assembly.

[0037] Preferably, when waterproofing the main microphone and auxiliary microphone on the front shell assembly 1, the two microphones can be glued to the microphone cavity of the front shell assembly 1 with waterproof adhesive, and a waterproof and breathable membrane can be attached to the surface of the two microphones for waterproofing.

[0038] In summary, the waterproof smartphone front shell assembly provided by this utility model features textured edges on both sides of the front shell assembly created using ultraviolet laser engraving before adhesive application. The textured edges increase the adhesion of the adhesive layer. Each antenna has its own FPC adhesive application groove, which not only completely isolates external moisture and dust but also increases the adhesion between the antenna body and the front shell assembly. The side buttons and fingerprint module each have their own corresponding adhesive application grooves, achieving a waterproof effect. By employing different adhesive waterproofing methods for different functional modules on the front shell assembly, the waterproofing requirements of different functional modules are met, solving the problem that the waterproof sealing effect of existing front shell assemblies weakens after long-term use.

[0039] 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 smartphone with a waterproof front shell assembly, comprising a front shell assembly, a TP cover plate, and a middle shell assembly; characterized in that, The front shell assembly has laser-engraved textures on both sides of the frame. The texture on the front is sealed to the back edge of the TP cover plate by adhesive dispensing, and the texture on the back is sealed to the front edge of the middle shell assembly by adhesive dispensing. The FPC adhesive grooves of each antenna on the front shell assembly are sealed by adhesive dispensing.

2. The smartphone with a waterproof front shell assembly 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 smartphone with a waterproof front shell assembly according to claim 2, characterized in that, The front shell assembly has side guards on both sides of its frame; the top of the side guards is polished to form a smooth surface, which is used by the ultraviolet laser engraving machine to engrave in the area enclosed by the side guards after recognition.

4. The smartphone with a waterproof front shell assembly according to claim 3, characterized in that, The TP cover plate covers the front of the front shell assembly, and the adhesive layer on the front shell assembly is bonded to the frame on the back of the TP cover plate; a number of support bones are arranged at intervals along the inner side of the baffle, and the support bones are used to limit and support the adhesive layer during bonding and compression.

5. A smartphone with a waterproof front shell assembly according to claim 2 or 4, 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.

6. The smartphone with a waterproof front shell assembly according to claim 5, characterized in that, Each FPC dispensing groove includes a square groove with a long through hole in the middle. One end of the antenna body extends from the top middle of one side of the groove, bends towards the through hole at the bottom, and is electrically connected to the internal antenna FPC.

7. The smartphone with a waterproof front shell assembly according to claim 6, characterized in that, The four feet of the groove and through hole are arc-shaped.

8. The smartphone with a waterproof front shell assembly according to claim 2, 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 smartphone with a waterproof front shell assembly according to claim 2, characterized in that, On the other side of the front shell assembly, below the side key FPC adhesive groove, there is also a fingerprint adhesive groove. The fingerprint adhesive groove is a square through groove. One end of the fingerprint FPC extends from the middle of the top of one side of the fingerprint adhesive groove, bends, passes through the bottom of the fingerprint adhesive groove, and is electrically connected to the BTB connector of the internal fingerprint circuit.

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