USB seat installation structure and mobile terminal

Abstract

The present invention relates to a USB socket mounting structure and a mobile terminal including the USB socket mounting structure. The USB socket mounting structure is used to install a USB socket and is located between a back cover and a display screen. The USB socket mounting structure comprises: a shell having a first surface corresponding to the back cover and a second surface corresponding to the display screen; the shell is provided with a mounting hole penetrating the first surface and the second surface; and a bracket for supporting the USB socket partially accommodated in the mounting hole, the bracket comprising a closing portion connected to the second surface, the closing portion blocking the opening of the mounting hole located on the second surface, the thickness of the closing portion being 0.05 mm to 0.3 mm, and on the basis of realizing the thinness of the USB socket mounting structure, the USB socket mounting structure is ensured to have sufficient mechanical strength, and at the same time has a strong ability to prevent liquid pollution and dust pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile terminals, and in particular to a USB socket mounting structure and a mobile terminal comprising the USB socket mounting structure. Background Art

[0002] With the continuous development of electronic technology, mobile terminals such as smart phones or tablet computers have become an important part of people's lives and work. A USB socket is installed on the mobile terminal, and the mobile terminal can be charged or data is transmitted with an external device through the USB socket. However, the USB socket occupies a large installation space, and the thickness of the mobile terminal is difficult to reduce, which is not conducive to the thin design of the mobile terminal. Summary of the Invention

[0003] A technical problem solved by the present invention is how to achieve a lightweight and thinner USB socket installation structure.

[0004] A USB socket mounting structure is applied to a mobile terminal, wherein the mobile terminal includes a rear cover and a display screen arranged opposite to each other, and the USB socket mounting structure is located between the rear cover and the display screen of the mobile terminal, and is characterized in that the USB socket mounting structure includes:

[0005] A housing having a first surface facing the back cover and a second surface facing the display screen; the housing is provided with a mounting hole penetrating the first surface and the second surface; and

[0006] A bracket is used to support the USB socket partially accommodated in the mounting hole, the bracket includes a closing portion connected to the second surface, the closing portion blocks the opening of the mounting hole located on the second surface, and the thickness of the closing portion is 0.05mm to 0.3mm.

[0007] In one embodiment, the shell includes a bottom plate and a frame arranged around the circumference of the bottom plate; the first surface and the second surface are located on the bottom plate, and a mounting notch connected to the mounting hole is formed in a recess on the frame.

[0008] In one embodiment, the bracket includes a bending portion connected to the closing portion, and the bending portion is fixed to the frame.

[0009] In one embodiment, the bent portion and the closed portion are perpendicular to each other.

[0010] In one embodiment, a relief groove corresponding to the USB socket is provided on a side of the closing portion facing the back cover, and the relief groove is recessed in a direction away from the mounting hole.

[0011] In one embodiment, the second surface has a stepped groove arranged around the mounting hole, and the stepped groove cooperates with the bracket and is used to position the bracket.

[0012] In one embodiment, an adhesive body is further included between the shell and the bracket, and the adhesive body is used to fix the bracket on the shell.

[0013] In one embodiment, the adhesive body is a double-sided adhesive layer.

[0014] In one embodiment, it further includes a first hot melt connection portion located on the shell, and the bracket is provided with a second hot melt connection portion that cooperates with the first hot melt connection portion through a hot melt process.

[0015] In one embodiment, the first hot melt connection portion is a hot melt protrusion, and the second hot melt connection portion is a hot melt hole.

[0016] In one embodiment, it further includes a first injection-molded connection portion located on the housing, and the bracket is provided with a second injection-molded connection portion that cooperates with the first injection-molded connection portion through an injection molding process.

[0017] In one embodiment, the bracket further includes two positioning parts connected to the closing part, the positioning parts are provided with positioning holes for cooperating with the injection mold, and the positioning parts are coplanar with the closing part.

[0018] In one embodiment, the first injection-molded connection portion is an injection-molded protrusion, and the second injection-molded connection portion is an injection-molded hole.

[0019] In one embodiment, the inner wall surface of the injection hole is provided with nano-micropores that cooperate with the injection convex column.

[0020] In one embodiment, the injection-molded protrusions are located on the housing and the frame.

[0021] In one embodiment, the shape of the injection-molded protrusion on the shell is cylindrical, and the shape of the injection-molded protrusion on the frame is prismatic.

[0022] In one embodiment, it also includes a threaded fastener and a hot melt nut, the hot melt nut is embedded in the shell on the second surface, a countersunk hole corresponding to the hot melt nut is opened on the bracket, and the threaded fastener is passed through the countersunk hole and cooperates with the hot melt nut.

[0023] In one embodiment, the bracket is any one of a stainless steel bracket, a phosphor copper bracket, a copper bracket, a beryllium copper bracket, and a nickel-copper alloy bracket.

[0024] A mobile terminal comprises a back cover, a display screen, a USB socket, and any one of the above-mentioned USB socket mounting structures, wherein the USB socket is located on the USB socket mounting structure, and the USB socket mounting structure is located between the back cover and the display screen.

[0025] A technical effect of an embodiment of the present invention is to ensure that the USB socket mounting structure has sufficient mechanical strength on the basis of achieving a lightweight and thin USB socket mounting structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the USB socket installation structure provided in the first embodiment;

[0027] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the middle bracket;

[0028] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure;

[0029] Figure 4 for Figure 2 A side structural diagram of

[0030] Figure 5 A schematic diagram of a first exemplary USB socket installation structure provided in the first embodiment;

[0031] Figure 6 A schematic diagram of a second exemplary USB socket installation structure provided in the first embodiment;

[0032] Figure 7 A schematic diagram of a third exemplary USB socket installation structure provided in the first embodiment;

[0033] Figure 8 A schematic diagram of a fourth exemplary USB socket installation structure provided in the first embodiment;

[0034] Figure 9 A schematic diagram of a USB socket installation structure provided in a second embodiment;

[0035] Figure 10 for Figure 9 Schematic diagram of the three-dimensional structure of the middle bracket;

[0036] Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure;

[0037] Figure 12 for Figure 10 A side structural diagram of

[0038] Figure 13A schematic diagram of a first exemplary USB socket installation structure provided in the second embodiment;

[0039] Figure 14 A schematic diagram of a second exemplary USB socket installation structure provided in the second embodiment;

[0040] Figure 15 A schematic diagram of a third exemplary USB socket installation structure provided in the second embodiment;

[0041] Figure 16 This is a schematic diagram of a fourth exemplary USB socket installation structure provided in the second embodiment. DETAILED DESCRIPTION

[0042] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0043] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0044] See Figure 1 The present invention provides a first type of USB socket mounting structure 10, which is used to fix a USB socket. The USB socket mounting structure 10 is located between the back cover 600 and the display screen 500. The USB socket mounting structure 10 includes a housing 100 and a bracket 200. The housing 100 has a first surface 110 and a second surface 120. The first surface 110 and the second surface 120 are located on opposite sides of the housing 100. The first surface 110 is disposed opposite the back cover 600 (i.e., the first surface 110 is located on the side of the housing 100 facing the back cover 600), and the second surface 120 is disposed opposite the display screen 500 (i.e., the second surface 120 is located on the side of the housing 100 facing the display screen 500). The housing 100 also defines a mounting hole 150, which extends through the first surface 110 and the second surface 120, and is therefore a through hole.

[0045] See Figure 2The bracket 200 includes a closing portion 210, which can be in the form of a thin sheet. The closing portion 210 is fixedly connected to the second surface 120 of the shell 100. The closing portion 210 can block the opening of the mounting hole 150 located on the second surface 120. The thickness of the closing portion 210 can range from 0.02 mm to 0.4 mm.

[0046] During installation, the USB socket is partially accommodated in mounting hole 150. Bracket 200 ensures sufficient mechanical strength at mounting hole 150. The USB socket is stacked on the enclosing portion 210 of bracket 200, which provides strong support for the bottom surface of the USB socket. Due to the relatively thin enclosing portion 210 of bracket 200, the majority of the USB socket's volume is accommodated in mounting hole 150 along the height (Z-axis) of the USB socket. This reduces the height of the USB socket protruding from the second surface 120 of the housing 100, thereby reducing the overall volume and installation height of the USB socket mounting structure 10. Therefore, by fully utilizing the advantage of the thin thickness of the closing portion 210, the accommodating space of the mounting hole 150 is increased while ensuring the mechanical strength. The height of the mounting hole 150 that can accommodate the USB socket will be increased, and the height (corresponding volume) of the USB socket exposed outside the mounting hole 150 will be reduced. When the USB socket mounting structure 10 is installed on the mobile terminal 20, the installation space of the entire USB socket mounting structure 10 in the mobile terminal 20 can be further reduced, thereby ensuring the lightness and thinness of the mobile terminal 20.

[0047] At the same time, the combined effect of bracket 200 and mounting hole 150 improves the alignment of the USB socket during installation. Specifically, the USB socket's axes of symmetry in the width (X-axis) and height (Z-axis) directions are parallel to the X- and Z-axis axes of symmetry of the housing 100, enhancing the aesthetic appeal of the USB socket mounting structure 10. The sealing portion 210 of bracket 200 isolates mounting hole 150 from display screen 500, preventing liquid droplets and dust from entering the USB socket through mounting hole 150. This effectively protects the USB socket from water and dust.

[0048] See Figure 1In some embodiments, the housing 100 includes a bottom plate 130 and a frame 140. The frame 140 is disposed around the periphery of the bottom plate 130. For example, the bottom plate 130 may be substantially rectangular, and the frame 140 is connected to the four sides of the bottom plate 130. The first surface 110 and the second surface 120 are both located on the bottom plate 130. In the height direction (Z-axis direction), the frame 140 may protrude a certain distance relative to the first surface 110 and the second surface 120, thereby forming a storage space on the side of the entire housing 100 corresponding to the display screen 500 and the back cover 600. The mounting hole 150 is provided on the bottom plate 130. The mounting hole 150 is located adjacent to the frame 140 of the housing 100. The frame 140 is recessed to a certain depth to form a mounting notch 141. The mounting notch 141 is connected to the mounting hole 150. The mounting notch 141 extends through the entire frame 140 in the Y-axis direction (length direction), thereby connecting the mounting notch 141 to the mounting hole 150. In the Z-axis direction, the mounting notch 141 is only recessed to a certain depth on the frame 140, specifically, it is recessed to a certain depth from the side of the frame 140 facing the back cover 600 to the side facing the display screen 500, and does not penetrate the entire frame 140. When the USB socket is accommodated in the mounting hole 150, the end of the USB socket with the jack cooperates with the mounting notch 141, thereby connecting the USB socket to an external data cable or power cable with a USB plug; at the same time, the bottom wall and side walls of the mounting notch 141 also provide certain support and limiting functions for the USB socket. Of course, the shell 100 can be an integrally formed structure with the back cover 600. The shell 100 is roughly a rectangular frame structure with rounded corners at the four corners. The shell 100 can be made of materials such as aluminum alloy, stainless steel, plastic or glass.

[0049] See also Figures 2 to 4 In some embodiments, the bracket 200 further includes a bending portion 220. The bending portion 220 can also be in the form of a thin sheet. The thickness of the bending portion 220 and the closed portion 210 can be equal. One end of the bending portion 220 is connected to one end of the closed portion 210. The bending portion 220 is bent at a certain angle relative to the closed portion 210, such as 90° (i.e., the bending portion 220 and the closed portion 210 are perpendicular to each other). Figure 1 When the entire bracket 200 is fixed on the shell 100, the closing portion 210 is stacked on the second surface 120 of the shell 100, and the bending portion 220 is stacked on the inner surface of the frame 140. The bending portion 220 extends a certain length from the closing portion 210 toward the display screen 500. In short, the bending portion 220 is bent relative to the closing portion 210 toward the display screen 500.

[0050] The bent portion 220 gives the entire bracket 200 an L-shaped cross-section, thereby enhancing the mechanical strength of the bracket 200. The closing portion 210 is fixed to the base plate 130, while the bent portion 220 is fixed to the frame 140, improving the stability and reliability of the connection between the bracket 200 and the housing 100. While the closing portion 210 seals the opening of the mounting hole 150, the bent portion 220 further seals the edge of the mounting hole 150, enhancing the sealing capability of the bracket 200 against the mounting hole 150 and significantly improving the resistance of the entire USB socket mounting structure 10 to liquid and dust contamination.

[0051] The bracket 200 can be made by a stamping process or a bending process. The material of the bracket 200 can be any one of stainless steel, phosphor copper, copper, beryllium copper, and nickel-copper alloy. That is, the bracket 200 can be any one of a stainless steel bracket, a phosphor copper bracket, a copper bracket, a beryllium copper bracket, and a nickel-copper alloy bracket.

[0052] The sealing portion 210 is provided with a relief groove 211, which can be formed by a stamping process. For example, the side of the sealing portion 210 facing the mounting hole 150 is stamped so that the corresponding portion of the sealing portion 210 is recessed away from the mounting hole 150 (i.e., recessed toward the display screen 500), forming the relief groove 211. A protrusion is formed on the side of the sealing portion 210 facing away from the mounting hole 150, which precisely surrounds the relief groove 211. The relief groove 211 extends to the bend 220. The relief groove 211 is used to prevent interference with certain components of the USB socket, ensuring that the USB socket is smoothly accommodated in the mounting hole 150.

[0053] See Figure 1 The second surface 120 of the bottom plate 130 also has a stepped groove 160. The stepped groove 160 is arranged around the mounting hole 150 and is formed by recessing the second surface 120 to a certain depth toward the first surface 110. When the bracket 200 is fixed to the housing 100, the closed portion 210 of the bracket 200 cooperates with the stepped groove 160. The stepped groove 160 serves to position the bracket 200, allowing the bracket 200 to be accurately installed at the set position on the housing 100. Of course, it is also possible to provide a locking hole on the second surface 120 of the bottom plate 130 and a locking post on the bracket 200; alternatively, a locking post can be provided on the bottom plate 130 and a locking hole on the bracket 200. The cooperation between the locking hole and the locking post can also achieve a positioning effect for the bracket 200.

[0054] See Figure 5In some embodiments, the bracket 200 and the housing 100 are connected by gluing. That is, the USB mounting structure further includes an adhesive body 410, which is disposed between the housing 100 and the bracket 200, and the bracket 200 is fixed to the housing 100 by the adhesive body 410. For example, the adhesive body 410 can be a solid adhesive such as a double-sided adhesive layer 411. During installation, the mounting surface of the bracket 200 (i.e., the surface where the bracket 200 and the housing 100 are in contact) is pre-treated with a cleaning agent. Similarly, the surface of the stepped groove 160, the surface corresponding to the frame 140 and the bent portion 220 are all pre-treated with a cleaning agent. A protective film on the double-sided adhesive layer 411 is removed and the double-sided adhesive layer 411 is affixed to the housing 100. Then, another protective film on the double-sided adhesive layer 411 is removed, and finally, the bracket 200 is affixed to the double-sided adhesive layer 411, thereby achieving an adhesive connection between the bracket 200 and the housing 100.

[0055] Of course, the adhesive body 410 can also be made of liquid glue. After the liquid glue is cured, the adhesive body 410 is formed, which serves to connect the bracket 200 and the housing 100. To improve the bonding strength between the adhesive body 410 and the bracket 200 and the housing 100, the corresponding mounting surfaces of the bracket 200 and the housing 100 can be sandblasted to increase the roughness of the mounting surfaces (i.e., roughening treatment). This can greatly increase the contact area between the mounting surfaces and the adhesive body 410. At the same time, after curing, the adhesive body 410 forms a more interlocking occlusal structure with the bracket 200 and the housing 100, thereby increasing the bonding strength of the adhesive body 410, ensuring the stability of the connection between the bracket 200 and the housing 100, and ensuring the sealing performance of the bracket 200 with the mounting hole 150.

[0056] For liquid glue, polymer glues such as amino resin glue, phenolic resin glue, acrylic resin glue, hydroquinone-formaldehyde resin glue, xylene-formaldehyde resin glue, unsaturated polyester glue, composite resin glue, polyimide glue, and urea-formaldehyde resin glue can be selected. During the bonding process, a certain amount of thickener or leveling agent can be added to the liquid glue. The thickener can increase the viscosity of the liquid glue (viscosity can reach 3500mPa.s), thereby improving the connection strength between bracket 200 and housing 100. The leveling agent also ensures that the glue layer after forming the liquid glue does not form pores, ensures a uniform thickness of the glue layer, and ensures the consistency of the connection strength between bracket 200 and housing 100.

[0057] See Figure 6In some embodiments, the bracket 200 and the housing 100 are connected by hot melt. That is, the USB installation structure further includes a first hot melt connection portion 420, which is located on the housing 100. The bracket 200 is also provided with a second hot melt connection portion 402. During installation, the first hot melt connection portion 420 is first matched with the second hot melt connection portion 402, and then the hot melt process is used to achieve a hot melt connection between the bracket 200 and the housing 100.

[0058] The first hot melt connection portion 420 can be a hot melt boss 421, which is arranged on the bottom wall of the stepped groove 160. There are six hot melt bosses 421, and the six hot melt bosses 421 are arranged around the mounting hole 150. Of course, the number of hot melt bosses 421 can be appropriately increased or decreased according to actual needs. The shape of the hot melt boss 421 can be regular or irregular, such as cylindrical or prismatic. The second hot melt connection portion 402 is a hot melt hole 402a that cooperates with the first hot melt connection portion 420. During installation, the hot melt hole 402a on the bracket 200 is matched with the hot melt boss 421 on the shell 100, and then the hot melt boss 421 is heated by a hot melt device. After the hot melt boss 421 absorbs heat, it forms a viscous liquid in the hot melt hole 402a. After cooling and forming, the hot melt boss 421 will be connected to the bracket 200 as a whole, and finally the bracket 200 is fixed to the shell 100. Of course, in order to further improve the stability of the bracket 200, a hot melt boss 421 can also be set on the frame 140, and a hot melt hole 402a can be set on the bending portion 220 to stably fix the bending portion 220 of the bracket 200 on the frame 140 of the shell 100.

[0059] The first hot melt connection portion 420 may also be a hot melt hole provided on the housing 100 , and the second hot melt connection portion 402 may be a hot melt protrusion provided on the bracket 200 .

[0060] See Figure 7In some embodiments, the bracket 200 and the housing 100 are connected by injection molding. That is, the USB mounting structure also includes a first injection molding connection portion 430, which is located on the housing 100, and a second injection molding connection portion 403 is also provided on the bracket 200. The first injection molding connection portion 430 can be an injection molding boss 431, which is located on the inner side wall of the frame 140 and the bottom wall of the stepped groove 160. The number of injection molding bosses 431 is eleven, and the eleven injection molding bosses 431 are arranged around the mounting hole 150. Of course, the number of injection molding bosses 431 can be appropriately increased or decreased according to actual needs. The second injection molding connection portion 403 is an injection molding hole 403a that cooperates with the first injection molding connection portion 430. For example, eight injection-molded protrusions 431 are provided on the stepped groove 160. These protrusions 431 are generally cylindrical in shape and mate with the injection holes 403a on the closure portion 210. Three injection-molded protrusions 431 are generally prismatic in shape and mate with the injection holes 403a on the bent portion 220. Of course, the first injection-molded connection portion 430 may also be the injection holes 403a provided on the housing 100, and the second injection-molded connection portion 403 may be the injection-molded protrusions 431 provided on the bracket 200.

[0061] During the installation process of the bracket 200, for example, the bracket 200 with the injection hole 403a is placed in the mold for forming the shell 100. During the molding process of the shell 100, the molten injection liquid enters the injection hole 403a of the bracket 200. After a period of cooling, the molten injection liquid will solidify in the injection hole 403a to form an injection boss 431, thereby realizing an integrated connection between the injection boss 431 and the bracket 200. Finally, the mold is opened, and the bracket 200 will be stably and reliably fixed on the shell 100, while ensuring the sealing performance of the bracket 200 to the mounting hole 150.

[0062] The molten injection molding liquid can be injected into the mold for forming the housing 100 using a plunger injection machine or a screw injection machine. To avoid deformation in the mold due to sudden temperature changes, the bracket 200 with the injection hole 403a can be appropriately preheated before being placed into the mold cavity, so that the temperature value of the bracket 200 after preheating is within the range of 300°C to 350°C. For example, the bracket 200 with the injection hole 403a can be placed in a heating device, and the heating device gradually increases the temperature to preheat the bracket 200. Of course, a temperature sensor can be provided in the heating device, and the temperature sensor is connected to a display screen for monitoring the temperature of the heating device. By observing the display screen, the real-time temperature of the bracket 200 after preheating can be read.

[0063] As the molten molding liquid cools in the injection hole 403a to form the injection protrusion 431, the injection protrusion 431 shrinks, creating a gap between the injection protrusion 431 and the injection hole 403a, which affects the connection strength between the bracket 200 and the housing 100. Therefore, after the mold is injection-molded, the injection molding machine maintains pressure for approximately six seconds. Under the pressure of the injection molding machine, the molten molding liquid effectively fills the gap between the injection protrusion 431 and the injection hole 403a, forming a tight fit between the injection protrusion 431 and the injection hole 403a. This not only ensures the connection strength between the bracket 200 and the housing 100, but also ensures the sealing performance of the bracket 200 against the USB socket, improving its waterproof and dustproof capabilities. Of course, after the injection molding machine maintains pressure for a set time, the pressure of the injection molding machine is gradually reduced over time to avoid the formation of rough edges around the injection hole 403a due to excessive pressure or excessive holding time.

[0064] Nanopores can be set on the inner wall of injection hole 403a. When support 200 is placed in the mold of housing 100 molding, molten injection molding fluid enters the nanopores. After cooling and molding, injection molding protrusion 431 will form an "anchor effect" with support 200, significantly enhancing the bonding force between support 200 and housing 100. For the formation of nanopores, support 200 can be degreased and decontaminated by alkali washing and pickling. Then, support 200 after degreasing and decontamination is placed in an amine solution (T liquid, Taiseiplas liquid) and soaked for a set time, that is, support 200 is subjected to T treatment. After T treatment, honeycomb nanopores will be formed on the inner wall of injection hole 403a, and the cross-sectional size of the nanopores is between 20nm and 40nm. Finally, before being placed in the mold of housing 100 molding, support 200 formed with nanopores is washed and dried to further ensure the bonding force of injection molding protrusion 431 and support 200.

[0065] Nanopores can also be formed using a laser engraving process, where the light energy of a laser beam causes physical and chemical changes on the inner wall of the injection hole 403a, thereby etching a plurality of micropores. Of course, chemical etching methods, i.e., wet etching, can also be used to form nanopores. Dry etching processes, such as plasma etching, can also be used to form micropores on the inner wall of the injection hole 403a. This involves ionized gas atoms accelerated by an electric field impacting the inner wall of the injection hole 403a, thereby etching a large number of micropores.

[0066] The bracket 200 further includes two positioning portions 230, located at opposite ends of the enclosing portion 210. The positioning portions 230 are coplanar with the enclosing portion 210, meaning they can be considered extensions of the edges of the enclosing portion 210. Positioning holes 231 are defined in the positioning portions 230. When the bracket 200 is placed in the mold for molding the housing 100, the positioning holes 231 cooperate with the positioning posts in the injection mold to position the entire bracket 200, improving the mounting accuracy and sealing performance of the bracket 200 on the housing 100.

[0067] See Figure 8 In some embodiments, the bracket 200 and the housing 100 are connected by threads. That is, the USB mounting structure further includes a threaded fastener 440 and a hot melt nut 450. The threaded fastener 440 can be a countersunk screw 441.

[0068] For example, a hot melt nut 450 is implanted on the inner wall of the frame 140 and the bottom wall of the stepped groove 160 by hot melting, and a countersunk hole 404 is opened at a position corresponding to the hot melt nut 450 on the bracket 200. During the installation process, the countersunk screw 441 is passed through the countersunk hole 404 and threadedly connected to the hot melt nut 450, thereby fixing the bracket 200 on the shell 100. At this time, the countersunk screw 441 is installed on one side of the display screen 500 or the inner side of the frame 140. For another example, a hot melt nut 450 is implanted on the bracket 200 by hot melting, and a countersunk hole 404 is opened on the bottom wall of the frame 140 and the stepped groove 160. Of course, the countersunk hole 404 runs through the entire base plate 130 or the frame 140. During the installation process, the countersunk screw 441 is passed through the countersunk hole 404 and threadedly connected with the hot melt nut 450, thereby fixing the bracket 200 on the shell 100. At this time, the countersunk screw 441 is installed on one side of the back cover 600 or the outside of the frame 140.

[0069] See Figure 9 The present invention further provides a second type of USB socket mounting structure 10. This type of USB socket mounting structure 10 differs from the first type of USB socket mounting structure 10 primarily in the specific structure of the bracket. For other similarities, please refer to the description of the first type of USB socket mounting structure 10 above and will not be repeated here.

[0070] See Figure 9The USB socket mounting structure 10 is used to fix the USB socket. The USB socket mounting structure 10 is located between the back cover 600 and the display screen 500. The USB socket mounting structure 10 includes a housing 100 and a bracket 300. The housing 100 has a first surface 110 and a second surface 120. The first surface 110 and the second surface 120 are located on opposite sides of the housing 100. The first surface 110 is disposed opposite the back cover 600 (i.e., the first surface 110 is located on the side of the housing 100 facing the back cover 600), and the second surface 120 is disposed opposite the display screen 500 (i.e., the second surface 120 is located on the side of the housing 100 facing the display screen 500). The housing 100 also defines a mounting hole 150. The mounting hole 150 passes through the first surface 110 and the second surface 120, and thus the mounting hole 150 is a through hole.

[0071] The bracket 300 is connected to the first surface 110 of the housing 100 and includes a sealing portion 310. The sealing portion 310 is received in the mounting hole 150 and blocks the opening of the mounting hole 150 on the second surface 120. The sealing portion 310 encloses a cavity 301, within which the USB socket is partially received. The thickness of the sealing portion 310 can range from 0.02 mm to 0.4 mm. In addition to ensuring sufficient mechanical strength at the mounting hole 150 and reducing the overall volume and installation height of the USB socket mounting structure 10, the sealing portion 310 is received within the mounting hole 150, further enhancing the sealing performance of the bracket 300 relative to the mounting hole 150. Furthermore, the USB socket is received within the cavity 301 of the bracket 300, and the cavity 301 acts as a limiter, further improving the alignment of the USB socket after installation.

[0072] See also Figures 10 to 12 In some embodiments, the bracket 300 further includes a main body portion 320, the main body portion 320 is connected to the closing portion 310, and the closing portion 310 protrudes a certain distance relative to the main body portion 320. Figure 9 The main body 320 is fixed on the bottom wall of the stepped groove 160. During the assembly process, the stepped groove 160 cooperates with the main body 320 and positions it, thereby limiting the entire bracket 300 and improving the installation accuracy of the bracket 300.

[0073] The enclosed portion 310 includes a base plate 311, a first side plate 312, a second side plate 313, and a third side plate 314. The first side plate 312, the second side plate 313, and the third side plate 314 correspond to the three inner walls of the mounting hole 150, respectively. The enclosed portion 310 has a roughly U-shaped cross-section. The base plate 311 corresponds to the opening of the mounting hole 150 on the second surface 120. The base plate 311 is a roughly rectangular plate. The first side plate 312, the second side plate 313, and the third side plate 314 are respectively connected to the three edges of the base plate 311. The first side plate 312, the second side plate 313, and the third side plate 314 are all roughly perpendicular to the base plate 311. The ends of the second side plate 313 are respectively connected to the ends of the first side plate 312 and the third side plate 314. The thickness of the closing portion 310 mentioned above refers to the thickness of the substrate 311 . Of course, the thicknesses of the first side plate 312 , the second side plate 313 , the third side plate 314 and the main body 320 may all be equal to the thickness of the substrate 311 .

[0074] The main body 320 includes a first flange 321, a second flange 322, and a third flange 323. The first flange 321, the second flange 322, and the third flange 323 are all substantially parallel to the base plate 311 and are bent relative to the sealing portion 310 in a direction away from the accommodating cavity 301. The first flange 321 is connected to the first side panel 312, the second flange 322 is connected to the second side panel 313, and the third flange 323 is connected to the third side panel 314. The second flange 322 is connected between the first flange 321 and the third flange 323.

[0075] A retaining groove 311 a is defined on the base plate 311 . The retaining groove 311 a is recessed on a surface of the base plate 311 located at the accommodating cavity 301 and facing away from the mounting hole 150 .

[0076] When the bracket 300 is installed on the shell 100, the first flange 321, the second flange 322 and the third flange 323 are all fixed on the bottom wall of the stepped groove 160, and the base plate 311 closes the opening on one end of the mounting hole 150. At the same time, the end of the base plate 311 away from the second side plate 313 is fixed on the bottom wall of the mounting notch 141.

[0077] See Figure 13 In some embodiments, the bracket 300 is connected to the shell 100 by gluing, and a bonding body 410 is provided on the bottom wall of the stepped groove 160 and the wall surface of the installation notch 141. The bonding body 410 can be a double-sided tape or a glue layer formed by solidifying liquid glue.

[0078] See Figure 14In some embodiments, when the bracket 300 and the housing 100 are connected by hot melt, six hot melt bosses 421 are provided on the bottom wall of the stepped groove 160, two hot melt bosses 421 are provided on the bottom wall of the mounting notch 141, two hot melt holes 402a are provided on each of the first flange 321, the second flange 322, and the third flange 323, and two hot melt holes 402a are provided on the end of the base plate 311 away from the second side plate 313. The hot melt holes 402a can be located in the avoidance groove 311a. Of course, the number of hot melt holes 402a of the hot melt bosses 421 can be increased or decreased as appropriate. At the same time, the hot melt bosses 421 can be provided on the bracket 300, while the hot melt holes 402a are provided on the housing 100.

[0079] See Figure 15 In some embodiments, the bracket 300 is connected to the shell 100 by injection molding. Two injection holes 403a can be respectively set on the first flange 321, the second flange 322 and the third flange 323. At the same time, three injection holes 403a are set on the end of the base plate 311 away from the second side plate 313. Two of the injection holes 403a on the base plate 311 are opened in the avoidance groove 311a. When the bracket 300 is placed in the mold for forming the shell 100, after the molten injection liquid cools, an injection molding boss 431 that cooperates with the injection molding hole 403a is formed on the bottom wall of the stepped groove 160 and the bottom wall of the installation notch 141. The injection molding boss 431 is connected to the bracket 300, thereby fixing the bracket 300 on the shell 100. Of course, injection molding bosses 431 can also be respectively provided on the first flange 321, the second flange 322, the third flange 323 and the base plate 311. After the mold is opened, the injection molding bosses 431 will be inserted into the bottom wall of the stepped groove 160 and the bottom wall of the mounting notch 141, which can also realize the connection between the bracket 300 and the shell 100.

[0080] The bracket 300 may also include two stoppers 330, which are respectively connected to the first flange 321 and the third flange 323. The stoppers 330 are coplanar with the first and third flanges 321, 323. That is, the stoppers 330 can be considered extensions of the edges of the first and third flanges 321, 323. The stoppers 330 have stopper holes 331 defined therein. When the bracket 300 is placed in the mold for forming the housing 100, the stopper holes 331 cooperate with the positioning posts in the injection mold to position the entire bracket 300, thereby improving the installation accuracy and sealing performance of the bracket 300 on the housing 100.

[0081] See Figure 16In some embodiments, the bracket 300 is connected to the housing 100 using threads. A heat-seal nut 450 is implanted on the first flange 321, the second flange 322, the third flange 323, and the base plate 311. The heat-seal nut 450 protrudes a certain height above the surface of the bracket 300 in a direction away from the base plate 311. A countersunk hole 404 is provided on the bottom wall of the stepped groove 160 and the bottom wall of the mounting notch 141. The countersunk hole 404 extends through the entire bottom plate 130 or frame 140. A countersunk screw 441 is then used. The countersunk screw 441 penetrates the countersunk hole 404 from one side of the display screen 500 and cooperates with the heat-seal nut 450 to ultimately connect the bracket 300 to the housing 100. Of course, a hot melt nut 450 can be implanted on the shell 100, a countersunk hole 404 can be opened on the bracket 300, and a countersunk screw 441 can pass through the countersunk hole 404 from one side of the back cover 600 and cooperate with the hot melt nut 450 to also achieve the connection between the bracket 300 and the shell 100.

[0082] The bracket 300 can be manufactured by a stamping process, that is, a thin sheet is fixed to a punch press, and the punch punches the thin sheet once or multiple times, thereby stretching the thin sheet to form the closed portion 310 of the bracket 300. The unstretched portion of the thin sheet forms the main body 320 of the bracket 300. Similarly, the material of the bracket 300 can be any one of stainless steel, phosphor copper, copper, beryllium copper, and nickel-copper alloy, ensuring that the mechanical strength of the bracket 300 is ensured while ensuring the thinness of the bracket 300.

[0083] To further enhance the sealing performance between the bracket 300 and the housing 100 and effectively prevent contaminants such as droplets and dust from entering the USB socket, a seal can be provided between the bracket 300 and the housing 100. The seal can be made of an elastic material, such as silicone, rubber, or foam. The seal can be provided on the stepped groove 160 of the housing 100. Depending on the specific shape of the bracket 300 and the fit between the bracket 300 and the housing 100, the seal can be in the form of an open U-shaped gasket or a closed O-shaped gasket.

[0084] See also Figure 1 and Figure 9 The present invention further provides a mobile terminal 20, which may be a mobile phone or a tablet computer. The mobile terminal 20 includes the aforementioned USB socket mounting structure 10. Since the USB socket mounting structure 10 has a relatively small installation height and volume, the mobile terminal 20 with the USB socket mounting structure 10 becomes thinner and lighter, and has good resistance to liquid and dust contamination.

[0085] As used herein, a "terminal" includes, but is not limited to, a device configured to receive / transmit communication signals via a wireline connection (e.g., via a public switched telephone network (PSTN), a digital subscriber line (DSL), digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (e.g., for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a "wireless communication terminal," "wireless terminal," and / or "mobile terminal 20." Examples of mobile terminals 20 include, but are not limited to, satellite or cellular telephones; personal communication system (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communication capabilities; PDAs that may include a radiotelephone, a pager, Internet / Intranet access, a web browser, a notepad, a calendar, and / or a global positioning system (GPS) receiver; and conventional laptop and / or palmtop receivers or other electronic devices that include a radiotelephone transceiver.

[0086] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A USB socket installation structure is applied to a mobile terminal, wherein the mobile terminal comprises a rear cover and a display screen arranged opposite to each other, and the USB socket installation structure is located between the rear cover and the display screen of the mobile terminal, characterized in that: The USB seat installation structure comprises: A housing, comprising a bottom plate and a frame arranged around the bottom plate, wherein the bottom plate has a first surface facing the back cover and a second surface facing the display screen; the housing is provided with a mounting hole penetrating the first surface and the second surface, and the frame is recessed to form a mounting notch connected to the mounting hole; and A bracket is used to support a USB socket partially accommodated in the mounting hole, the bracket includes a closing portion connected to the second surface, the closing portion blocks the opening of the mounting hole located on the second surface, the thickness of the closing portion is 0.05mm to 0.3mm, and a seal is arranged between the bracket and the shell.

2. The USB socket installation structure according to claim 1, characterized in that: The sealing element is made of silicone, rubber or foam.

3. The USB socket installation structure according to claim 2, characterized in that: The bracket also includes a bending portion connected to the closing portion, and the bending portion is fixed on the frame.

4. The USB socket installation structure according to claim 3, characterized in that: The bending portion and the closing portion are perpendicular to each other.

5. The USB socket installation structure according to claim 1, characterized in that: A avoidance groove corresponding to the USB socket is arranged on one side of the closing portion facing the rear cover, and the avoidance groove is recessed in a direction away from the mounting hole.

6. The USB socket installation structure according to claim 1, characterized in that: The second surface has a stepped groove arranged around the mounting hole, and the stepped groove cooperates with the bracket and is used to position the bracket.

7. The USB socket installation structure according to claim 1, characterized in that: It also includes an adhesive body located between the shell and the bracket, and the adhesive body is used to fix the bracket on the shell.

8. The USB socket installation structure according to claim 7, characterized in that: The adhesive body is a double-sided adhesive layer.

9. The USB socket installation structure according to claim 1, characterized in that: It also includes a first hot melt connection part located on the shell, and the bracket is provided with a second hot melt connection part that cooperates with the first hot melt connection part through a hot melt process.

10. The USB socket installation structure according to claim 9, characterized in that: The first hot melt connection part is a hot melt protrusion, and the second hot melt connection part is a hot melt hole.

11. The USB socket installation structure according to claim 1, characterized in that: It also includes a first injection molding connection part located on the shell, and the bracket is provided with a second injection molding connection part that cooperates with the first injection molding connection part through an injection molding process.

12. The USB socket installation structure according to claim 11, characterized in that: The bracket further comprises two positioning parts connected to the closing part, the positioning parts are provided with positioning holes for cooperating with the injection mold, and the positioning parts are coplanar with the closing part.

13. The USB socket installation structure according to claim 11, characterized in that: The first injection-molded connection portion is an injection-molded convex column, and the second injection-molded connection portion is an injection-molded hole.

14. The USB socket installation structure according to claim 13, characterized in that: The inner wall surface of the injection hole is provided with nanometer micropores matched with the injection convex column.

15. The USB socket installation structure according to claim 13, characterized in that: The injection-molded convex columns are located on the shell and the frame.

16. The USB socket installation structure according to claim 15, characterized in that: The shape of the injection-molded convex column located on the shell is cylindrical, and the shape of the injection-molded convex column located on the frame is prismatic.

17. The USB socket installation structure according to claim 1, characterized in that: It also includes a threaded fastener and a hot melt nut, the hot melt nut is embedded in the shell on the second surface, a countersunk hole corresponding to the hot melt nut is opened on the bracket, and the threaded fastener is inserted into the countersunk hole and cooperates with the hot melt nut.

18. The USB socket installation structure according to any one of claims 1 to 17, characterized in that: The bracket is any one of a stainless steel bracket, a phosphor bronze bracket, a red copper bracket, a beryllium copper bracket, and a nickel-copper alloy bracket.

19. A mobile terminal, characterized in that: It comprises a back cover, a display screen, a USB socket, and the USB socket mounting structure according to any one of claims 1 to 18, wherein the USB socket is located on the USB socket mounting structure, and the USB socket mounting structure is located between the back cover and the display screen.

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