Dustproof and waterproof smart phone

Abstract

The dustproof and waterproof smart phone comprises a TP cover plate, a front shell assembly, a middle frame assembly and a battery cover which are arranged in sequence, a first laser carving pattern ring on a front frame of the front shell assembly and a TP cover plate are subjected to dispensing sealing, a PCBA board is installed on the upper portion of the back face of the front shell assembly, a second laser carving pattern ring on a back frame of the front shell assembly and a front frame of the middle frame assembly are bonded and sealed, and the back face of the middle frame assembly and a battery cover are bonded and sealed through a waterproof foam adhesive tape. The FPC dispensing grooves of the antennas on the front shell assembly are sealed in a dispensing mode, and the two-in-one receiver loudspeaker piece is fixedly bonded in the sound cavity of the front shell assembly through the dustproof and waterproof piece. The laser-etched lines can increase the surface adhesive force and improve the adhesion of an adhesive layer after adhesive dispensing; the FPC dispensing groove of each antenna is directly dispensed and sealed, and the adhesive layer can isolate the outside to realize water and dust prevention, and also can increase the stickiness of the antenna and the front shell assembly. And the dustproof and waterproof piece is used for performing waterproof and dustproof protection on the receiver loudspeaker piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronics, and particularly relates to a dustproof and waterproof smart phone. BACKGROUND

[0002] Dustproof and waterproof (IP68 protection level) is one of the development trends of smart phones and is increasingly favored by users. Based on various components on the smart phone, such as an antenna, a loudspeaker receiver, a side key, a fingerprint recognition module on a front shell component, a camera module on a middle frame component and a battery cover, the existing antenna is waterproof, and a sealing rubber ring and a gasket combination is usually adopted, an O-shaped sealing rubber ring is arranged at a through hole of the antenna passing through the front shell, and the sealing rubber ring is filled into a gap through compression deformation. This method is also applicable to waterproofing of a SIM card tray, a charging interface and other parts. However, long-term use causes the sealing rubber ring to inevitably age, become hard, lose elasticity or have cracks, thereby reducing the sealing performance. In the design of the loudspeaker receiver, the loudspeaker receiver and the loudspeaker are combined into a whole. Due to the increase in the size of the whole, the sound cavity of the loudspeaker receiver arranged in the shell of the smart phone is also increased. Although waterproof paint is coated on the surface of the whole loudspeaker receiver, the gap between the sound cavity and the loudspeaker sound hole is ignored, and the dustproof and waterproof effect is poor, which cannot meet the synchronous requirements of dustproof and waterproof.

[0003] In addition, the frame of the front shell component is adhered to the screen lens and the rear shell component through a ring of waterproof adhesive, but the frame of the front shell component is relatively smooth, and the adhesion of the waterproof adhesive is weakened after long-term use, which also affects the sealing effect.

[0004] Therefore, the prior art still needs to be improved and enhanced. SUMMARY

[0005] In view of the above problems in the prior art, the present application aims to provide a dustproof and waterproof smart phone to solve the problem that the waterproof and sealing effect of the front shell component and the loudspeaker receiver of the existing smart phone is weakened after long-term use.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: A dustproof and waterproof smart phone comprises a TP cover plate, a front shell component, a middle frame component and a battery cover arranged in sequence, wherein a first laser-engraved line ring on the front edge of the front shell component is point-sealed with the TP cover plate, a PCBA board is mounted on the upper part of the back of the front shell component, a second laser-engraved line ring on the back edge of the front shell component is adhered and sealed with the front edge of the middle frame component, and the back of the middle frame component is adhered and sealed with the battery cover through waterproof foam adhesive paste. The FPC point-sealing groove of each antenna on the front shell component is point-sealed, and the two-in-one loudspeaker receiver is adhered in the sound cavity of the front shell component through the dustproof and waterproof part.

[0007] The dustproof and waterproof smart phone, the frame of the two sides of the front shell assembly is engraved by a purple light engraving machine clockwise or counterclockwise for one or more circles.

[0008] The dustproof and waterproof smart phone, the antenna on the front shell assembly includes a first antenna and a second antenna on the top, a third antenna on the bottom and a fourth antenna on the side; The first antenna body of the first antenna is provided with two first FPC dispensing grooves; the second antenna body of the second antenna is provided with one second FPC dispensing groove; the third antenna body of the third antenna is provided with three third FPC dispensing grooves; and the fourth antenna body of the fourth antenna is provided with one fourth FPC dispensing groove.

[0009] The dustproof and waterproof smart phone, the frame of the two sides of the front shell assembly is engraved by a purple light engraving machine clockwise or counterclockwise for one or more circles.

[0010] The dustproof and waterproof smart phone, the frame of the two sides of the front shell assembly is engraved by a purple light engraving machine clockwise or counterclockwise for one or more circles.

[0011] The dustproof and waterproof smart phone, the frame of the two sides of the front shell assembly is engraved by a purple light engraving machine clockwise or counterclockwise for one or more circles.

[0012] The dustproof and waterproof smart phone, the frame of the two sides of the front shell assembly is engraved by a purple light engraving machine clockwise or counterclockwise for one or more circles.

[0013] The dustproof and waterproof smart phone, a side key FPC point glue groove is further arranged on the other side edge of the front shell assembly, including a square side key groove, a long strip-shaped side key through hole is arranged in the middle of the side key groove, one end of the side key FPC is arranged to extend from the middle of the top of one side of the side key groove, and the end is bent towards the side key through hole at the bottom and electrically connected with the spring on the feeding point of the internal side key circuit.

[0014] The dustproof and waterproof smart phone, a side key FPC point glue groove is further arranged on the other side edge of the front shell assembly, including a square side key groove, a long strip-shaped side key through hole is arranged in the middle of the side key groove, one end of the side key FPC is arranged to extend from the middle of the top of one side of the side key groove, and the end is bent towards the side key through hole at the bottom and electrically connected with the spring on the feeding point of the internal side key circuit.

[0015] The dustproof and waterproof smart phone, a side key FPC point glue groove is further arranged on the other side edge of the front shell assembly, including a square side key groove, a long strip-shaped side key through hole is arranged in the middle of the side key groove, one end of the side key FPC is arranged to extend from the middle of the top of one side of the side key groove, and the end is bent towards the side key through hole at the bottom and electrically connected with the spring on the feeding point of the internal side key circuit.

[0016] Compared with the prior art, the dustproof and waterproof smart phone provided by the application comprises a TP cover plate, a front shell assembly, a middle frame assembly and a battery cover which are sequentially arranged; a first laser-engraved line circle on the front frame of the front shell assembly is glued and sealed with the TP cover plate, a PCBA board is mounted on the upper part of the back of the front shell assembly, a second laser-engraved line circle on the back frame of the front shell assembly is glued and sealed with the front frame of the middle frame assembly, and the back of the middle frame assembly is glued and sealed with the battery cover through waterproof bubble cotton glue. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The figure is an explosion view of the smart phone provided by the application.

[0018] Figure 2 The figure is a front view of the front shell assembly in the smart phone provided by the application.

[0019] Figure 3 The figure is a back view of the front shell assembly in the smart phone provided by the application.

[0020] Figure 4 The figure is Figure 2Enlarged structural schematic view of the middle circle part.

[0021] Figure 5 Is Figure 3 Enlarged structural schematic view of the middle circle part.

[0022] Figure 6 Is the schematic view of the FPC dispensing groove of the antenna of the top of the front shell assembly provided by the application.

[0023] Figure 7 Is the schematic view of the FPC dispensing groove of the antenna of the bottom of the front shell assembly provided by the application.

[0024] Figure 8 Is the schematic view of the FPC dispensing groove of the antenna of the side edge of the front shell assembly provided by the application.

[0025] Figure 9 Is the structural schematic view of the FPC dispensing groove of the antenna provided by the application.

[0026] Figure 10 Is the structural schematic view of the earpiece speaker of the front shell assembly provided by the application.

[0027] Figure 11 Is the exploded view of the dustproof and waterproof part provided by the application.

[0028] Figure 12 Is the structural schematic view of the sound cavity of the front shell assembly provided by the application.

[0029] Figure 13 Is the schematic view of the assembled dustproof net and waterproof adhesive back of the front shell assembly provided by the application.

[0030] Figure 14 Is the schematic view of the assembled earpiece steel sheet of the front shell assembly provided by the application.

[0031] Figure 15 Is the schematic view of the assembled waterproof foam rubber ring of the front shell assembly provided by the application.

[0032] Figure 16 Is the schematic view of the assembled earpiece speaker of the front shell assembly provided by the application.

[0033] Figure 17 Is the structural schematic view of the back of the smart phone and the card holder provided by the application.

[0034] Figure 18 Is the structural schematic view of the card holder and the sealing ring provided by the application.

[0035] Figure 19 Is the size sectional view of the installed card holder and front shell assembly provided by the application.

[0036] Figure 20 is the structure section view of the card holder and front shell assembly after installation provided by the present application.

[0037] Figure 21 is the structure schematic view of the FPC dispensing groove of the side key in the front shell assembly provided by the present application.

[0038] Figure 22 is the structure schematic view of the fingerprint dispensing groove in the front shell assembly provided by the present application.

[0039] Figure 23 is the structure schematic view of the front and back of the silica gel ring of the loudspeaker provided by the present application.

[0040] Figure 24 is the assembly schematic view of the silica gel ring of the loudspeaker and the loudspeaker box provided by the present application.

[0041] Figure 25 is the section view of the silica gel ring of the loudspeaker and the loudspeaker box provided by the present application.

[0042] Figure 26 is the structure schematic view of the USB interface provided by the present application.

[0043] Figure 27 is the installation position schematic view of the USB interface provided by the present application.

[0044] Figure 28 is the section view of the USB interface after installation provided by the present application. DETAILED DESCRIPTION

[0045] The present application provides a dustproof and waterproof smart phone. In order to make the purpose, technical scheme and advantages of the present application more clear and definite, the present application is further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0046] Please also refer to Figures 1 to 25The dustproof and waterproof intelligent mobile phone comprises a TP cover glass 1, a front shell assembly 2, a PCBA (Printed Circuit Board + Assembly) plate 3, a middle frame assembly 3 and a battery cover 4 which are sequentially arranged, a PCBA plate 5 is mounted on the upper part of the back surface of the front shell assembly 2, a first laser-engraved line circle 6 on the front frame of the front shell assembly 2 is point-sealed with the TP cover glass 1, a second laser-engraved line circle 7 on the back frame of the front shell assembly 1 is adhesively sealed with the front frame of the middle frame assembly 3, the back surface of the middle frame assembly 3 is adhesively sealed with the battery cover 4 through a waterproof bubble cotton adhesive tape 8 with a blue film 47, the FPC (Flexible Printed Circuit) point-sealing groove of each antenna on the front shell assembly 1 is point-sealed, and a two-in-one earpiece speaker 9 is fixed in the sound cavity 25 of the front shell assembly 2 through a dustproof and waterproof part.

[0047] The laser-engraved line circle on the frame can increase the surface adhesion, improve the adhesion of the glue layer after point-sealing, prolong the service life of the glue layer and improve the sealing and waterproof effect of the outer circle of the intelligent mobile phone. The FPC point-sealing groove of each antenna is directly point-sealed, the glue layer can not only isolate the outside to achieve waterproof and dustproof but also point-seal and fix important components such as elements and welding points on the FPC, and can increase the adhesion of the antenna and the front shell assembly; the problem that the waterproof sealing effect of the existing front shell assembly will weaken after long-term use is solved. The dustproof and waterproof part is used for isolating water and dust at the speaker sound hole 10 of the earpiece speaker 9 and protecting the earpiece speaker 9 from water and dust; the problem that the waterproof and dustproof effect of the existing two-in-one earpiece speaker is poor is solved. It should be understood that there are other structural parts on the front shell assembly 2 and the middle frame assembly 3. Only the structures related to the sealing and waterproof of the embodiment are described here, and other existing structures are not described in detail.

[0048] As shown in Figure 2 and Figure 3 Each laser-engraved line circle is formed by using a purple light laser-engraving machine to engrave one or more circles on the corresponding frame in a clockwise or counterclockwise direction. The first laser-engraved line circle 6 on the front frame of the front shell assembly 2 is point-sealed by point-sealing glue on the front frame, and the second laser-engraved line circle 7 on the back frame of the front shell assembly 2 is adhesively sealed with the front frame of the middle frame assembly 3 through the first bubble cotton glue circle 11. Whether point-sealing or adhesively sealing with bubble cotton glue, the surface adhesion can be increased and the adhesion of the bubble cotton glue and the glue layer after point-sealing can be improved through the laser-engraved lines. Figure 1 A battery protection film is attached to the back surface of the front shell assembly 2, Figure 3 The battery protection film is removed to facilitate display.

[0049] The engraving lines are preferably grid lines or diagonal lines. The existing engraving adopts a fiber laser marking machine, which is suitable for scenarios with not very high precision requirements, such as metals, some non-metals, etc. If processing of materials that are easy to melt or heat-sensitive materials, problems such as burning, deformation, etc. may occur. The focusing spot of the ultraviolet engraving machine used in this embodiment is extremely small, and the spot after condensation can reach 10 μm, which can achieve more precise processing, the marking effect of the lines is more delicate, the texture will not appear pitted phenomenon, the edge is smooth, and the carbonization degree is extremely low; and the range of applicable materials is wider, in addition to metals, it can also be used for plastics, glass, ceramics, food, pharmaceutical packaging materials, etc., especially for heat-sensitive materials.

[0050] Preferably, in order to avoid engraving other devices during engraving, such as Figure 4 and Figure 5 As shown, the front and back frames of the front shell assembly 1 are provided with a 0.8 mm wide and 0.5-1 mm high stop edge 12 on both sides, and the ultraviolet engraving machine engraves in the area surrounded by the two stop edges 12. The top of the stop edge is polished to be a smooth surface, which forms a color difference with the matte surface of other structures, so that the ultraviolet engraving machine can be easily identified.

[0051] Preferably, when the front shell assembly 2 is assembled with the TP cover plate 1, the glue layer after dispensing is lower than the stop edge 12. A plurality of support bones 13 can also be arranged on the front frame of the front shell assembly 2 and along the inner side of the stop edge at intervals, and the support bones 13 are 0.13 mm higher than the top surface of the glue layer and lower than the stop edge. When the TP cover plate 1 covers the front of the front shell assembly 2, the glue layer on the front shell assembly 2 and the frame on the back of the TP cover plate 1 are bonded together, and the support bones 13 provide support, limiting and supporting the glue layer during bonding and extrusion, so as to avoid excessive extrusion of the glue layer affecting other devices and also not affecting the thickness of the smart phone.

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

[0053] The FPC dispensing grooves of each antenna have the same structure, except for different lengths and positions. As shown in Figure 9 each FPC dispensing groove includes a square groove 22, a long hole 23 is formed in the middle of the groove 22, the hole 23 exposes the corresponding antenna FPC, one side of the groove 22 is adjacent to the corresponding antenna body, the other side of the groove 22 is adjacent to the shell 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 bottom hole 23, and is electrically connected to the corresponding antenna feed point inside.

[0054] Preferably, the four feet of the groove 22 and the hole 23 are arc-shaped; the size of the groove 22 is 7x1.8x1.0 (lengthxwidthxheight); the length of the hole 23 is 0.5mm shorter than the groove, and the width is preferably 0.55-0.7mm, the size of the hole 23 is set too large, which is easy to leak glue, too small, which is not easy to shape, affecting the service life of the mold. The above various size values can be adjusted according to design requirements, and the specific size is not limited here.

[0055] When dispensing, the glue is injected into the inside of the front shell assembly through the hole 23 and covers the antenna FPC, and after filling, the glue blocks the groove 22, further fixes the connecting end 24 of the antenna body, ensures that the electrical connection between the connecting end 24 of the antenna body and the antenna FPC is more stable, and after the groove 22 is filled, it can not only completely isolate the external moisture and dust, but also increase the adhesion between the antenna body and the front shell assembly.

[0056] In this embodiment, as shown in Figure 10 , Figure 11 and Figure 12 , the loudspeaker sound hole 10 is arranged on one side of the sound cavity 25 of the front shell assembly 2, and the two-in-one earpiece loudspeaker 9 is fixed in the sound cavity 25 of the front shell assembly 2 by a dustproof and waterproof part. The dustproof and waterproof part includes a dustproof net 26 with back glue, an earpiece steel sheet 27, and a waterproof foam rubber ring 28; the dustproof net 26 is fixed on 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 on the first step surface 31 of the outer circle of the plane by the waterproof back glue 30, the main part of the earpiece steel sheet 27 is fixed on the back glue 33 of the dustproof net 26, one side of the waterproof foam rubber ring 28 is fixed on the second step surface 32 of the sound cavity 25, and the other side of the waterproof foam rubber ring 28 is fixed with the earpiece loudspeaker 9.

[0057] Taking the direction shown in Figure 12 as an example, the upper left part of the plane 29 at the bottom of the sound cavity 25 is provided with a first lower concave surface 34, which occupies about 1 / 4 of the area of the plane 29, and the upper left part of the first lower concave surface 34 is concave again to form a long second lower concave surface 35, and the side surface of the second lower concave surface 35 communicates with the loudspeaker sound hole 10, and by continuously concave to leave a gap, the sound transmission is facilitated.

[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 15The direction shown is an example, the waterproof foam rubber ring 28 is provided with double-sided tape, one side (bottom) is fixed on the second step surface 32 of the sound cavity 25, and blocks the buckle edge 38 of the earpiece steel sheet 27. The other side (top) of the waterproof foam rubber ring 28 is fixed on the outer ring of the earpiece horn 9, such as Figure 16 As shown, the assembled earpiece horn 9 is further protected by the waterproof foam rubber ring 28.

[0063] Preferably, a mark strip 39 can also be provided on the earpiece steel sheet 27 to identify the direction and prevent mistakes.

[0064] Please continue to refer to Figure 1 、 Figures 17 to 20 , the back upper part of the middle frame assembly 3 is provided with a camera module recessed. The camera module takes three cameras as an example, including three cameras 40 distributed in a triangular shape, and the blue film of the waterproof foam rubber 8 and the upper part of the battery cover 4 are respectively provided with first and second windows 41 and 42 for exposing the camera module. A support 44 is externally adhered to the second window 42 through a support foam rubber 43, and a decorative piece 46 is externally adhered to the support 44 through a decorative piece foam rubber 45. The decorative piece foam rubber 45 and the decorative piece 46 are respectively provided with three lens holes for exposing the camera 40, and the lens hole on the decorative piece 46 is externally adhered to the corresponding lens 48 through a lens foam rubber 47. The support 44 supports the decorative piece 46, and the decorative piece 46 is used to limit and fix the three cameras 40. The support foam rubber 43, the decorative piece foam rubber 45 and the lens foam rubber 47 not only play a pasting and fixing role, but also can be sealed and waterproof.

[0065] It should be understood that, Figure 1 The pasting part of the waterproof foam rubber 8 in the first foam rubber ring 11 is the same, only the outer edge is adhered and sealed with the back frame of the middle frame assembly 3, and based on the blue film 47 on it, Figure 1 It looks like a whole piece, and the corresponding window and hole can be opened on the blue film 47. When the middle frame assembly 3 is adhered and sealed with the battery cover 4 through the waterproof foam rubber 8, a third laser-engraved line ring can also be laser-engraved on the back frame of the middle frame assembly 3. The surface adhesion and adhesion of the laser-engraved lines are increased to ensure the complete waterproof of the back of the smart phone.

[0066] The front shell assembly 2 is provided with a clamping groove 49 on the top, a clamping hole 51 is formed on the side edge adjacent to the clamping groove 49, and a needle hole 50 is formed adjacent to the clamping hole 51, and a clamping rod 52 is inserted into the clamping groove 49 through the clamping hole 51. In order to waterproof the card insertion part, a groove 56 is arranged on the connecting piece 55 between the clamping rod 51 and the tray 54, a sealing ring 57 with a width W of 1-1.3mm (preferably 1.1mm) is sleeved in the groove 56, the sealing ring 57 has an annular protruding part (the bottom thickness D is 0.36mm, and the height H is 0.33mm), a first installation groove opposite to the annular protruding part is arranged on the top 58 and the bottom 59 of the hole, when the clamping rod 51 is inserted, the annular protruding part is inserted into the first installation groove and is in interference fit with the first installation groove, so that the waterproof sealing effect is realized. A clamping shaft can also be arranged in the needle hole 50 to achieve waterproof sealing.

[0067] The annular protruding part is an arc angle with a certain elasticity (such as using silica gel material) with an inclined surface, after the clamping rod 51 is inserted, the inclined surface facilitates the insertion of the annular protruding part into the first installation groove. The sealing ring 57 and the annular protruding part are integrally formed; the groove 56 is arranged to further fix the sealing ring 57, compared with the existing sealing ring sleeved on the surface, the limiting of the groove 56 can avoid the movement of the sealing ring 57 after deformation after long-term use; at the same time, the annular protruding part extends into the first installation groove, compared with the existing gap between the hole top 58 of the clamping hole, the hole bottom 59 of the clamping hole and the connecting piece 55, this extension mode not only saves the material of the sealing ring, but also avoids the problem of gap filling caused by deformation after long-term use.

[0068] Preferably, as shown in the drawings, Figure 21 Preferably, as shown in the drawings, the other side edge of the front shell assembly 2 is also provided with a side key FPC dispensing groove 60, which has the same structure as the FPC dispensing groove of the antenna, including a square side key groove, a long strip-shaped side key through hole 61 is formed in the middle of the side key groove, one end of the side key FPC 62 extends from the middle of the top of the side key groove, bends towards the side key through hole 61 at the bottom, and is electrically connected with the spring on the feed point of the internal side key circuit. The dispensing mode is the same as the antenna, which can play a waterproof role for the side key.

[0069] Preferably, as shown in the drawings, Figure 22As shown, the other side of the front shell assembly 2, below the side key FPC dispensing groove 60, is also provided with a fingerprint dispensing groove 63, which has a changed structure. The fingerprint dispensing groove 63 is a square through groove. One connecting end of the fingerprint FPC 75 extends from the middle of the top side of the fingerprint dispensing groove 63, is bent, and is directly electrically connected with the BTB connector of the internal fingerprint circuit through the bottom of the fingerprint dispensing groove 63. The dispensing mode is the same as that of the antenna, and can play a waterproof role for the side key. Based on the large sensing area of the fingerprint module, the entire groove is hollowed out, the injection amount of the glue is increased, and the adhesion between the fingerprint module and the front shell assembly is increased.

[0070] Preferably, as shown in Figure 1 , Figure 23 , Figure 24 and Figure 25 , the loudspeaker box 64 at the lower part of the front shell assembly 2 can also be sealed and waterproof by interference assembly. A loudspeaker silica gel ring 65 is arranged at the sound outlet hole on the inner side of the loudspeaker cavity of the front shell assembly 2. When the loudspeaker box 64 is assembled into the loudspeaker cavity, the sound port of the loudspeaker box 64 is interference-fitted with the loudspeaker silica gel ring 65. The loudspeaker silica gel ring 65 includes a rectangular inner ring seat 66, an outer ring seat 77, and a loudspeaker dust screen 78 arranged between the inner ring seat 66 and the outer ring seat 77, which are preferably made of PET (polyester resin) material. A silica gel ring 67 is arranged on one side of the inner ring seat 66 and is outwardly inclined. Two first sound holes 76 with different sizes are arranged on the inner ring seat 66, and the sound holes 76 are located in the silica gel ring 67. A second sound hole 79 is arranged on the outer ring seat 77, and the size of the second sound hole 79 is the same as that of the two first sound holes 76 combined. The outer ring seat 77 is fixed (with adhesive or dispensing method) at the sound outlet hole on the inner side of the loudspeaker cavity. As shown in Figure 25 , based on the inclination of the sound outlet hole, the loudspeaker silica gel ring 65 is also inclined after being fixed. A second installation groove adapted to the silica gel ring 67 is arranged on the top 68 and the bottom 69 of the sound port of the loudspeaker box 64. When the loudspeaker box 64 is assembled, the protruding silica gel ring 67 is inserted into the second installation groove and is interference-fitted with the second installation groove, so as to realize the waterproof sealing effect. Based on the outward opening of the ring port of the silica gel ring 67, the silica gel ring 67 is equivalent to being obliquely inserted into the sound port of the loudspeaker box 64, thereby improving the tightness and waterproof effect.

[0071] Preferably, as shown in Figure 1 , Figure 26 , Figure 27 and Figure 28 , the USB interface 70 at the lower part of the front shell assembly 2 can also be sealed and waterproof by interference assembly. A body glue ring 71 is sleeved on the outer ring of the port of the USB interface 70. An interface hole 73 is arranged on the insertion surface 72 on the side of the front shell assembly 2. When the body glue ring 71 is inserted into the interface hole 73 on the insertion surface 72, the body glue ring 71 is interference-fitted with the interface hole 73.Figure 28 As shown, the arc-shaped part 74 (meshed) on one side of the body rubber ring 71 is pressed (shown by dotted line) when being inserted into the interface hole 73, that is, an interference fit is formed.

[0072] Preferably, when the main microphone and the auxiliary microphone on the front shell assembly 1 are waterproofed, the two microphones can be fixed by waterproof back glue in the microphone cavity of the front shell assembly 1, and a waterproof and breathable film is attached to the surface of the two microphones to waterproof. A layer of nano coating can be coated on the PCBA board to waterproof each device and pad on the board.

[0073] In summary, the dustproof and waterproof smart phone provided by the application can increase the adhesion of the glue layer by engraving a pattern on the frame of the front shell assembly through ultraviolet engraving and then applying glue. Each antenna is provided with an FPC glue groove for glue application, which can completely isolate external moisture and dust and increase the adhesion of the antenna body and the front shell assembly. The side key and the fingerprint module are respectively provided with corresponding glue grooves, achieving waterproof effect. Dust is isolated by a dustproof net and the earpiece steel sheet is fixed, combining the sealing and support of the earpiece steel sheet, completely preventing dust and water vapor from entering the inside of the smart phone through the sound cavity. In combination with the waterproof effect of the waterproof foam rubber ring, the earpiece speaker is further protected from water. Different waterproof methods are provided for different functional modules on the front shell assembly to meet the waterproof needs of different functional modules, solving the problem that the waterproof and sealing effect of the existing whole machine will weaken after long-term use.

[0074] It should be understood that the application of the present application is not limited to the above examples, and those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present application.

Claims

1. A dustproof and waterproof smart phone, comprising a TP cover plate, a front shell assembly, a middle frame assembly and a battery cover arranged in sequence; characterized in that, The first laser-engraved ring on the front frame of the front shell assembly is sealed by dispensing TP cover plate, the PCBA board is installed on the back of the front shell assembly, the second laser-engraved ring on the back frame of the front shell assembly is sealed by bonding with the front frame of the middle frame assembly, and the back of the middle frame assembly is sealed by bonding with the battery cover through waterproof foam glue.

2. The dust and water resistant smartphone of claim 1, wherein, The frame of the two sides of the front shell assembly is engraved by a purple light laser engraving machine clockwise or counterclockwise for one or more circles.

3. The dust and water resistant smartphone of claim 1, wherein, The antenna on the front shell assembly includes a first antenna and a second antenna on the top, a third antenna on the bottom and a fourth antenna on the side. The first antenna body of the first antenna is provided with two first FPC dispensing grooves; the second antenna body of the second antenna is provided with one second FPC dispensing groove; the third antenna body of the third antenna is provided with three third FPC dispensing grooves; and the fourth antenna body of the fourth antenna is provided with one fourth FPC dispensing groove.

4. The dust and water resistant smartphone of claim 1, wherein, A loudspeaker sound hole is arranged on one side of the sound cavity of the front shell assembly, and the two-in-one earpiece loudspeaker is fixed in the sound cavity of the front shell assembly by the dustproof and waterproof part.

5. The dust and water resistant smartphone of claim 4, wherein, The dustproof and waterproof part includes a dustproof net with back glue, an earpiece steel sheet and a waterproof foam rubber ring; the dustproof net is fixed on the plane at the bottom of the sound cavity, the earpiece steel sheet covers the entire sound cavity, the edge of the earpiece steel sheet is fixed on the first step surface of the outer ring of the plane by waterproof back glue, the main part of the earpiece steel sheet is fixed on the back glue of the dustproof net, one side of the waterproof foam rubber ring is fixed on the second step surface of the sound cavity, and the other side of the waterproof foam rubber ring is fixed with the earpiece loudspeaker.

6. The dust and water resistant smartphone of claim 1, wherein, The middle frame assembly is provided with a camera module, the blue film of the waterproof foam rubber paste and the upper part of the battery cover are respectively provided with a first window and a second window for exposing the camera module; a support is externally adhered to the second window by support foam rubber glue, a decoration part is externally adhered to the support by decoration part foam rubber glue, a lens hole for exposing the camera is respectively arranged on the decoration part foam rubber glue and the decoration part, and a corresponding lens is externally adhered to the lens hole of the decoration part by lens foam rubber glue.

7. The dust and water resistant smartphone of claim 1, wherein, The top of the front shell assembly is provided with a clamping groove, one side adjacent to the clamping groove is provided with a clamping hole, and a clamping rod is inserted into the clamping groove through the clamping hole; a connecting part between the clamping rod and the clamping tray is provided with a groove, a sealing ring is sleeved in the groove, and the sealing ring is provided with an annular protruding part; a first mounting groove opposite to the annular protruding part is respectively arranged on the top of the clamping hole and the bottom of the clamping hole, the annular protruding part is inserted into the first mounting groove and is in interference fit with the first mounting groove.

8. The dust and water resistant smartphone of claim 1, wherein, The other side of the front shell assembly is also provided with a side key FPC dispensing groove, which includes a square side key groove, a long strip-shaped side key through hole is arranged in the middle of the side key groove, one end of the side key FPC is stretched out from the middle of the top of one side of the side key groove, and is electrically connected to the spring on the feed point of the internal side key circuit after being bent towards the bottom of the side key through hole.

9. The dust and water resistant smartphone of claim 1, wherein, A loudspeaker silica gel ring is arranged at the sound hole on the inner side of the loudspeaker cavity of the front shell assembly, and the sound port of the loudspeaker box is in interference fit with the loudspeaker silica gel ring when the loudspeaker box is installed in the loudspeaker cavity.

10. The dust and water resistant smartphone of claim 1, wherein, The interface hole is arranged on the plug-in surface of the side of the front shell assembly, and the outer ring of the port of the USB interface is sleeved with a body rubber ring. When the body rubber ring is inserted into the interface hole on the plug-in surface, the body rubber ring is in interference fit with the interface hole.

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