Shell, electronic equipment and preparation method of shell

Abstract

The invention provides a shell, electronic equipment and a preparation method of the shell, and relates to the field of electronic equipment. The shell comprises an outer frame and a bottom plate, and the outer frame is arranged on the periphery of the bottom plate in a surrounding mode; the shell comprises an outer frame and a bottom plate, the outer frame and the bottom plate are integrally formed in a stamping mode, a first slot is formed in the bottom plate, a second slot is formed in the outer frame, the first slot is communicated with the second slot, injection molding parts are filled in the first slot and the second slot, the shell further comprises a bridge, the bridge is arranged in the injection molding part of the first slot, and the bridge is arranged in the injection molding part of the second slot. The first slot comprises a first side wall and a second side wall which are opposite, the first side wall is connected with the second side wall through a bridge, the bridge is bent in the direction away from the outer surface of the bottom plate, and the outer surface of the bottom plate is located on the outer side of the shell. Therefore, the machining time for machining a CNC technology through a numerical control machine tool in the shell manufacturing process can be shortened, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of electronic equipment, and in particular to a housing, an electronic equipment and a method for preparing the housing. Background Art

[0002] As consumers' requirements for the appearance of electronic devices such as smartphones, tablets, and game consoles continue to increase, metal integrated appearance shells are becoming more and more widely used. Since metal materials have high electromagnetic wave shielding properties, electronic products with communication functions such as mobile phones, tablets, and game consoles with metal shells usually need to open slits in the metal shell to implement antenna solutions and inject plastic in the slit area. In related technologies, CNC machine tool processing CNC processes are often used to process the shell before and after injection molding, which takes a long time and is costly. Summary of the invention

[0003] The present application provides a shell, an electronic device and a method for preparing the shell, which can reduce the processing time of a CNC process using a numerical control machine tool during the shell preparation process and reduce production costs.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions:

[0005] In a first aspect, the present application provides a shell, comprising: an outer frame and a bottom plate, the outer frame being arranged around the periphery of the bottom plate; wherein the outer frame and the bottom plate are integrally formed by stamping, a first slit is provided on the bottom plate, a second slit is provided on the outer frame, the first slit and the second slit are connected, the first slit and the second slit are filled with injection molded parts, the shell further comprises: a bridge, the bridge is arranged in the injection molded part of the first slit, the first slit comprises a first side wall and a second side wall opposite to each other, the first side wall is connected to the second side wall by the bridge, the bridge is bent in a direction away from the outer surface of the bottom plate, wherein the outer surface of the bottom plate is located outside the shell.

[0006] Among them, the shell can be applied to electronic devices with antennas such as mobile phones, tablets, and game consoles. In this way, the bottom plate and the outer frame in the shell are integrally formed by stamping, which reduces the processing time of the CNC process of the shell during the preparation process, reduces the processing cost, and is conducive to the mass production of the shell. At the same time, the setting of the bridge can be used to connect the first side wall and the second side wall on both sides of the first slit during the preparation process to increase the structural strength of the shell, and can also be used for grounding the antenna. In addition, the bridge is bent in the direction away from the outer surface of the bottom plate, so that the outer surface of the bridge has a certain thickness of the injection molded part, which increases the consistency of the appearance of the injection molded part and improves the overall structural strength of the injection molded part.

[0007] In a possible implementation of the first aspect, the shell also includes: a connecting part, the connecting part is arranged in the injection molded part in the first slit, the connecting part includes: a first connecting part and a second connecting part, one end of the first connecting part is connected to the first side wall, one end of the second connecting part is connected to the second side wall, and the first connecting part and the second connecting part are arranged at intervals.

[0008] In the process of preparing the shell, the connection part is formed by disconnecting the bridge. That is to say, in the process of preparing the shell, a bridge is first set in the first slit to connect the first side wall and the second side wall on both sides of the first slit together to increase the overall strength of the shell during the processing. Afterwards, before the final shell is formed, the unnecessary bridge can be disconnected according to the grounding requirements of the antenna to form a connection part, so as to increase the area of ​​the signal penetration area and improve the signal transmittance of the antenna.

[0009] In a possible implementation of the first aspect, the shell further includes: a connecting portion, the connecting portion is arranged in the injection molded part in the first slit, the connecting portion includes: a first connecting portion and a second connecting portion, one end of the first connecting portion is connected to the first side wall, one end of the second connecting portion is connected to the second side wall, and the first connecting portion and the second connecting portion are arranged at intervals. A first groove is arranged on the inner surface of the injection molded part, the first groove includes a third side wall and a fourth side wall opposite to each other, the third side wall is close to the first side wall, the fourth side wall is located between the third side wall and the second side wall, the other end of the first connecting portion is located on the third side wall; the other end of the second connecting portion is located on the fourth side wall; wherein the inner surface of the injection molded part is located on the inner side of the shell.

[0010] The setting of the first groove allows the portion of the bridge not used for antenna grounding to be disconnected after the injection molding is completed during the preparation of the shell, so that the bridge that was not disconnected in the previous preparation step can connect the first side wall and the second side wall of the first slit during the preparation of the shell, thereby increasing the structural strength of the shell and reducing deformation of the shell in the corresponding process.

[0011] In a possible implementation of the first aspect, a second groove is provided on the inner surface of the injection molded part, the second groove includes a fifth side wall and a sixth side wall opposite to each other, the fifth side wall is coplanar with the first side wall, and the sixth side wall is coplanar with the second side wall; wherein the inner surface of the injection molded part is located inside the shell. wherein, during the preparation of the shell, the second groove is formed to remove the bridging.

[0012] Therefore, during the preparation process of the shell, after the injection molded part is prepared, a second groove can be set on the inner surface of the injection molded part, so that the part of the bridge that is not used for antenna grounding is completely removed, that is, it can ensure that the bridge that is not disconnected in the previous preparation step of the shell can be used to connect the first side wall and the second side wall of the first slit to enhance the structural strength of the shell, reduce the deformation of the shell in the corresponding process, and increase the area of ​​the first slit to increase the area of ​​the signal penetration zone and improve the signal transmittance of the antenna.

[0013] In a possible implementation of the first aspect, an outer surface of the bottom plate and an outer surface of the bridge form a step, wherein the outer surface of the bridge is located outside the shell. The setting of the step allows the entire outer surface of the bridge to be covered by the injection molded part, so that the outer surface of the injection molded part is a continuous surface when viewed from the outer surface of the shell, thereby increasing the overall strength of the injection molded part and improving the appearance of the shell.

[0014] In a possible implementation of the first aspect, the height of the step ranges from 0.3 mm to 0.96 mm, thereby ensuring that the injection molded part bridging the outer surface has sufficient thickness, thereby increasing the overall strength of the injection molded part and improving the appearance of the housing.

[0015] In a possible implementation of the first aspect, the height difference between the bottom of the outer surface of the bridge and the outer surface of the bottom plate is between 0.4 mm and 1.2 mm, thereby ensuring the thickness of the injection molded part located on the outer surface of the bridge, increasing the overall structural strength of the injection molded part, and improving the appearance of the housing.

[0016] In a second aspect, the present application provides a method for preparing a shell, comprising: stamping a metal sheet to form an intermediate structure; wherein the intermediate structure comprises: a bottom plate, an outer frame surrounding the bottom plate, a first slit is provided on the bottom plate, a second slit is provided on the outer frame, the first slit is connected to the second slit, a plurality of bridges are provided in the first slit, the first slit comprises a first side wall and a second side wall opposite to each other, and the first side wall is connected to the second side wall by the bridge. The bridge is stamped so that the bridge is bent in a direction away from the outer surface of the bottom plate. Injection molded parts are formed in the first slit and the second slit to form a shell; wherein the injection molded part covers the bridge.

[0017] The second aspect of the present application provides a method for preparing a shell, which is formed into one piece by stamping a metal sheet, thereby reducing the processing time of the CNC process of the shell during the preparation process, reducing the processing cost, and facilitating the mass production of the shell. At the same time, by forming a bridge through stamping, the bridge can be used to connect the first side wall and the second side wall on both sides of the first slit during the preparation process of the shell to increase the structural strength of the shell and reduce the deformation of the shell in the subsequent preparation process, and the bridge can also be used for grounding the antenna. In addition, during preparation, the injection molded part is covered with the bridge, which increases the consistency of the appearance of the injection molded part and improves the overall structural strength of the injection molded part.

[0018] In a possible implementation of the second aspect, after the injection molded part is formed in the first slit and the second slit, the method further includes: disconnecting part of the bridge and the injection molded part located on the inner surface of the bridge on the inner side of the shell, wherein the inner surface of the bridge is located on the inner side of the shell. In this way, the bridge can be used to connect the two sides of the first slit in the previous preparation process to increase the structural strength of the shell, and the unnecessary bridge can be disconnected according to the grounding requirements of the antenna after the shell is formed, thereby increasing the area of ​​the signal penetration zone and further ensuring the propagation strength of the antenna.

[0019] In a possible implementation of the second aspect, the bridge includes: a first part connected to the first side wall, a second part connected to the second side wall, and a third part connecting the first part and the second part, and the bridge and the injection molded part located on the inner surface of the bridge are disconnected on the inner side of the shell, including: forming a first groove on the inner surface of the injection molded part to remove the third part of the bridge and the injection molded part arranged on the surface of the third part to disconnect the bridge; wherein, there are multiple bridges, and one first groove is used to disconnect one bridge. The provision of the first groove allows the part of the bridge that is not used for antenna grounding to be disconnected after the injection molded part is prepared during the preparation process of the shell, so that in the previous preparation step, the undisconnected bridge can connect the first side wall and the second side wall of the first slit during the preparation process of the shell, thereby increasing the structural strength of the shell and reducing the deformation of the shell in the corresponding process.

[0020] In a possible implementation of the second aspect, a portion of the bridge and the injection molded part located on the inner surface of the bridge are disconnected on the inner side of the shell, including: forming a second groove on the inner surface of the injection molded part to remove the bridge; wherein, there are multiple bridges, and one second groove is used to remove one bridge. Thus, in the preparation process of the shell, after the preparation of the injection molded part is completed, a second groove can be set on the inner surface of the injection molded part, so that the part of the bridge that is not used for antenna grounding is completely removed, that is, it can be ensured that the undisconnected bridge can be used to connect the first side wall and the second side wall of the first slit in the previous preparation step of the shell to enhance the structural strength of the shell, reduce the deformation of the shell in the corresponding process, and increase the area of ​​the first slit to increase the area of ​​the signal penetration zone and improve the signal transmittance of the antenna.

[0021] In a possible implementation of the second aspect, before the injection molded part is formed in the first slit and the second slit, the method further includes: performing surface treatment on the intermediate structural part to form a large number of micropores in the first slit and the side wall of the first slit. In this way, during the process of forming the injection molded part in the first slit and the second slit, the injection molded part is filled into the holes, so that a good structural connection is formed between the injection molded part and the side wall of the first slit and the side wall of the second slit, thereby enhancing the bonding force between the injection molded part and the side wall of the first slit and the side wall of the second slit, and improving the structural strength of the shell.

[0022] In a possible implementation of the second aspect, before the shell is surface treated, the method further includes: providing a shielding layer on the outer surface of the bottom plate and the outer surface of the outer frame. Wherein, due to fluctuations in the preparation process and mold processing tolerances, when the injection molded parts are formed in the first slit and the second slit, the injection molded parts will overflow from the first slit and the second slit, forming a cloak on the surface of the bottom plate and the surface of the outer frame. At the same time, since micropores are formed on the bottom plate and the outer frame when the intermediate structural parts are surface treated before the injection molded parts are formed in the first slit and the second slit, the injection molded parts in the cloak area are embedded in the micropores, so that the cloak has a strong bonding force with the shell surface, which is difficult to remove by grinding, and the cloak needs to be removed by CNC machining using a CNC machine tool.

[0023] Therefore, by providing a shielding layer on the outer surface of the bottom plate and the outer surface of the outer frame, micropores will not be formed on the outer surface of the bottom plate and the outer frame when the intermediate structure is subjected to surface treatment, thereby reducing the bonding force between the outer surface of the bottom plate and the outer frame and the injection molded part. In other words, the bonding force between the outer surface of the bottom plate and the outer frame and the cloak is reduced, and the cloak can be removed by grinding only without CNC machining, thereby reducing the processing time of CNC machining and the preparation cost of the shell.

[0024] In a possible implementation of the second aspect, providing a shielding layer on the outer surface of the bottom plate and the outer surface of the outer frame includes: providing a shielding layer on the surface of the intermediate structure. The shielding layer on the side wall of the first slit, the side wall of the second slit and the bridge surface is removed, and the shielding layer on the surface of the bottom plate and the outer frame is retained. In this way, it can be ensured that the shielding layer is only formed on the surface of the bottom plate and the surface of the outer frame, and the shielding layer is prevented from splashing or being mistakenly provided on the side walls of the first slit and the second slit and the bridge surface, thereby affecting the bonding force between the injection molded part and the side walls of the first slit and the second slit in subsequent steps, thereby improving the accuracy of the shielding layer setting.

[0025] In a possible implementation of the second aspect, the method for removing the side walls of the first slit and the second slit and the shielding layer on the bridge surface includes removing the side walls of the first slit, the side walls of the second slit and the shielding layer on the bridge surface by CNC machining of a numerical control machine tool, thereby improving the machining accuracy.

[0026] In a possible implementation of the second aspect, surface treatment of the intermediate structure includes: placing the intermediate structure in a chemical solution for etching, so that the side wall of the first slit and the side wall of the second slit are in contact with the chemical solution, and a large number of micropores are formed on the side wall of the first slit and the side wall of the second slit. Thus, the process is simple.

[0027] In the example, the chemical solution is an acidic solution to erode a large number of micropores k1 on the sidewalls of the first slit and the sidewalls of the second slit. It can be understood that, in combination with the material properties of the raw metal sheet for preparing the shell, in other examples, the chemical solution can also be a solution of other properties, as long as a large number of micropores can be etched on the sidewalls of the first slit and the sidewalls of the second slit.

[0028] In a possible implementation manner of the second aspect, when an acidic solution is used to perform surface treatment on the intermediate structure to form micropores, the material of the shielding layer is a material that is not corroded by the acid solution, such as polymer ink.

[0029] In a possible implementation of the second aspect, after the intermediate structure is subjected to surface treatment, the method further includes: removing a shielding layer on the surface of the bottom plate and the outer frame. Removing the shielding layer on the surface of the bottom plate and the outer frame after the intermediate structure is subjected to surface treatment can make the outer surface of the injection molded part formed in a subsequent step flush with the outer surface of the bottom plate and the outer frame, thereby improving the consistency of the appearance of the shell.

[0030] In a possible implementation of the second aspect, the method for removing the shielding layer on the surface of the bottom plate and the outer frame includes: immersing the housing in a chemical reagent to remove the shielding layer on the surface of the bottom plate and the outer frame. The chemical reagent is a material that can dissolve the shielding layer and does not affect the metal. Exemplarily, when the material of the shielding layer is polymer ink, the material of the chemical reagent includes an organic solvent.

[0031] In this way, the step of removing the shielding layer on the surface of the bottom plate and the outer frame can be completed on the same production line as the step of surface treatment of the intermediate structural member, and only the corresponding solution needs to be replaced, thereby simplifying the preparation process.

[0032] In a possible implementation of the second aspect, the intermediate structural member further includes: a connecting material; the connecting material is connected to the outer frame, and after the injection molded part is formed in the first slit and the second slit, the method further includes: removing the connecting material. In this way, the connecting material can be reserved when the metal sheet is stamped. The connecting material can be used to assist positioning in the subsequent shell preparation process. At the same time, the connecting material can increase the overall connection strength of the intermediate structural member during the shell preparation process after the metal sheet is stamped, avoiding deformation that may occur in the subsequent production process; in addition, the connecting material can also ensure that the intermediate structural member is connected into a whole during the shell preparation process, so that the overall effect of the product obtained in the subsequent steps is consistent, and ultimately improves the finished product effect of the shell.

[0033] In a possible implementation of the second aspect, before the injection molded part is formed in the first slit and the second slit, the method further includes: forming a step between the outer surface of the bottom plate and the outer surface of the bridge; wherein the outer surface of the bridge is located outside the shell. In this way, the entire outer surface of the bridge is covered by the injection molded part, so that when viewed from the outer surface of the shell, the outer surface of the injection molded part is a continuous surface, thereby increasing the overall strength of the injection molded part and improving the appearance of the shell.

[0034] In a possible implementation of the second aspect, the method for forming a step between the outer surface of the base plate and the bridge includes: forming a step between the bridge and the outer surface of the base plate by CNC machining. In this way, the machining accuracy of the step can be improved. At the same time, when the side walls of the first and second slits and the shielding layer on the bridge surface are removed by CNC machining, the step can be formed between the bridge and the outer surface of the base plate by CNC machining, and the side walls of the first and second slits and the shielding layer on the bridge surface can be removed at the same time, thereby simplifying the process.

[0035] In a possible implementation of the second aspect, after the injection molded part is formed in the first slit and the second slit, the method further includes: grinding the surface of the shell. Performing appearance treatment on the outer surface of the shell. Thus, surface defects such as marks and scratches formed on the shell surface during the preparation process can be removed by grinding, the smoothness of the shell surface can be improved, and different appearance effects can be presented on the outer surface of the shell by appearance treatment.

[0036] In a possible implementation manner of the second aspect, polishing the surface of the shell includes: polishing the mantle of the injection-molded part and the outer surface of the shell, thereby improving the smoothness and flatness of the shell surface.

[0037] In a possible implementation of the second aspect, the thickness of the metal sheet is in a range of 0.6 mm to 1.2 mm, thereby reducing the amount of raw materials used and the cost while ensuring the strength of the shell.

[0038] In a third aspect, the present application provides an electronic device, comprising the housing provided in either the first aspect or the second aspect.

[0039] Since the electronic device of the third aspect provided in the embodiment of the present application includes a shell of any technical solution of the first aspect, or includes a shell prepared by any shell preparation method of the second aspect, the electronic device of the third aspect can solve the same technical problems corresponding to any technical solution in the first aspect and the second aspect, and achieve the same technical effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A perspective view of an electronic device provided for some embodiments of the present application;

[0041] Figure 2 for Figure 1 an exploded schematic diagram of the electronic device shown;

[0042] Figure 3 A schematic diagram of the structure of a shell viewed from the outer surface;

[0043] Figure 4 for Figure 3 A schematic diagram of the structure of the shell as viewed from the inner surface is provided;

[0044] Figure 5 A process flow chart of a method for preparing a shell;

[0045] Figure 6 A schematic diagram of the process of executing step S1;

[0046] Figure 7 for Figure 6 A partial enlarged schematic diagram of the middle structural member in area A;

[0047] Figure 8 is a schematic diagram of a partial structure of the housing obtained after executing step S2;

[0048] Fig. 9 A schematic diagram of the structure of a housing provided in some embodiments of the present application;

[0049] Fig.10 for Fig. 9 The structure schematic diagram of the remaining part of the shell after removing the injection molded parts at another viewing angle is shown;

[0050] Fig.11 for Fig.10A partial enlarged schematic diagram of area B in the shell is provided;

[0051] Fig.12 A schematic diagram of a partial cross-sectional structure of a housing provided in some embodiments of the present application;

[0052] Fig.13 A schematic diagram of a partial cross-sectional structure of a housing provided in some other embodiments of the present application;

[0053] Fig.14 A schematic diagram of a partial structure of a housing provided in some embodiments of the present application after removing the injection molded parts;

[0054] Fig.15 for Fig. 9 A partial enlarged schematic diagram of area C in the shell is provided;

[0055] Fig.16 A schematic diagram of a partial cross-sectional structure of a housing provided in some other embodiments of the present application;

[0056] Fig.17 A schematic diagram of a partial cross-sectional structure of a housing provided in some further embodiments of the present application;

[0057] Fig.18 A flow chart of a method for preparing a shell provided in some embodiments of the present application;

[0058] Fig.19 For execution Fig.18 A schematic structural diagram of an intermediate structural member 200 obtained after step S10;

[0059] Fig. 20 for Fig.19 A partial enlarged schematic diagram of area D in the intermediate structural member shown;

[0060] Fig.21 For execution Fig.18 A schematic diagram of a partial structure of an intermediate structural member obtained after step S11;

[0061] Fig. 22 For execution Fig.18 A schematic diagram of the local structure of the housing obtained after step S16;

[0062] Fig.23 A flow chart of a method for preparing a shell provided in some other embodiments of the present application;

[0063] Fig.24 For execution Fig.23 A schematic diagram of a partial structure of the intermediate structural member obtained after step S13;

[0064] Fig.25 For execution Fig.18A schematic diagram of the local structure of the housing obtained after step S16;

[0065] Fig.26 is a schematic diagram of a partial cross-sectional structure of an intermediate structural member obtained after executing step S131;

[0066] Fig. 27 For use Fig.26 The intermediate structure shown is implemented Fig.18 A schematic diagram of a partial cross-sectional structure of the shell obtained after step S16;

[0067] Fig.28 A flow chart of a method for preparing a shell provided in some other embodiments of the present application;

[0068] Fig.29 A schematic diagram of a partial cross-sectional structure of another intermediate structural member obtained after executing step S12 and step S13;

[0069] Fig.30 is a schematic diagram of a partial structure of the intermediate structural member obtained after executing step S121;

[0070] Fig.31 is a schematic diagram of a partial cross-sectional structure of the intermediate structural member obtained after executing step S121;

[0071] Fig.32 is a schematic diagram of a partial cross-sectional structure of the intermediate structural member obtained after executing step S122;

[0072] Fig.33 A flow chart of a method for preparing a shell provided in some further embodiments of the present application;

[0073] Fig.34 A flow chart of a method for preparing a shell provided in some other embodiments of the present application;

[0074] Fig.35 For execution Fig.18 A schematic structural diagram of another intermediate structural member formed in step S10;

[0075] Fig.36 A flow chart of a method for preparing a shell provided in some other embodiments of the present application;

[0076] Fig.37 A flow chart of a method for preparing a shell provided in some other embodiments of the present application;

[0077] Fig.38 A flow chart of a method for preparing a shell provided in some other embodiments of the present application;

[0078] Fig.39It is a schematic diagram of the local structure after removing part of the cloak from the outer surface of the shell;

[0079] Fig.40 A schematic diagram of a partial cross-sectional structure of a shell obtained after executing step S19;

[0080] Fig.41 is a schematic diagram of a partial cross-sectional structure of another shell obtained after executing step S19;

[0081] Fig.42 A flow chart of a method for preparing a shell provided in some other embodiments of the present application. DETAILED DESCRIPTION

[0082] In the embodiments of the present application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

[0083] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0084] In the description of the embodiments of the present application, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0085] In the description of the embodiments of the present application, the terms "coplanar", "perpendicular", "parallel", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within an acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement being discussed and the errors associated with the measurement of a specific amount (i.e., the limitations of the measurement system). For example, "coplanar" means that a certain error range is allowed for approximate coplanarity, and the error range can be an angular deviation within 5°, 10°, or 15° relative to the absolute coplanarity, or a step difference of no more than 0.05mm, 0.1mm, 0.2mm, 0.5mm, or 1mm relative to the absolute coplanarity. "Parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism can be, for example, an angular deviation within 5°, 8°, or 10°. "Vertical" includes absolute verticality and approximate verticality, wherein the acceptable deviation range of approximate verticality can also be, for example, a deviation within 5°, 8°, or 10°. “Equal” includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality may be, for example, that the difference between the two equals is less than or equal to 5% of either one.

[0086] An embodiment of the present application provides an electronic device, which is a type of electronic device with a communication function. Exemplarily, the electronic device may be a portable electronic device or other types of electronic devices. For example, the electronic device may be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a camera, a personal computer, a notebook computer, a wearable device, a game console, a walkie-talkie, etc. For the convenience of explanation, the following examples are all taken as an example of the electronic device being a mobile phone.

[0087] See also Figure 1 , Figure 2 , Figure 1 A perspective view of an electronic device 100 provided in some embodiments of the present application; Figure 2 for Figure 1 The exploded schematic diagram of the electronic device 100 is shown. In this embodiment, the electronic device 100 is a tablet phone. In some embodiments, the electronic device 100 includes a display module 10, a middle plate 20, a main circuit board 30, a sub-circuit board 40, a battery 50, and a housing 60.

[0088] It should be noted that Figure 1 , Figure 2 and Figure 3The following related drawings only schematically illustrate some components of the electronic device 100, and the actual shapes, sizes, positions and structures of these components are not subject to the present invention. Figure 1 , Figure 2 and Figure 3 and the limitations of the accompanying drawings below.

[0089] The display module 10 is used to display images, videos, etc. The display module 10 includes a light-transmitting cover plate 11 and a display screen 12. The light-transmitting cover plate 11 is stacked and fixedly connected with the display screen 12. In some examples, the light-transmitting cover plate 11 is used to protect the display screen 12 and prevent dust. The material of the light-transmitting cover plate 11 includes but is not limited to glass. For example, the light-transmitting cover plate 11 can adopt an ordinary light-transmitting cover plate 11, which is used to protect the display screen 12 to avoid damage to the display screen 12 due to external force collision, and can prevent dust. A light-transmitting cover plate 11 with a touch function can also be used to enable the electronic device 100 to have a touch function, thereby making it more convenient for users to use. Therefore, the present application does not specifically limit the specific material of the light-transmitting cover plate 11.

[0090] The display screen 12 may be a flexible display screen or a rigid display screen. For example, the display screen 12 may be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a quantum dot light emitting diode (QLED) display screen, or a liquid crystal display (LCD).

[0091] The middle plate 20 is stacked between the light-transmitting cover plate 11 and the housing 60. The middle plate 20 is used as the structural "skeleton" of the electronic device 100, and the main circuit board 30, the auxiliary circuit board 40, the battery 50, etc. can be fixed on the middle plate 20. Of course, it can be understood that the electronic device 100 may not include the middle plate 20.

[0092] The main circuit board 30 is used to integrate the control chip. The main circuit board 20 is fixed on the middle plate 20. Exemplarily, the main circuit board 30 can be fixed on the middle plate 20 by means of thread connection, clamping, welding, etc.

[0093] The control chip may be, for example, an application processor (AP), a double data rate synchronous dynamic random access memory (DDR), and a universal flash storage (UFS). In some embodiments, the main circuit board 30 is electrically connected to the display module 10, and the main circuit board 30 is used to control the display module 10 to display images or videos.

[0094] The main circuit board 30 can be a hard circuit board, a flexible circuit board, or a hard-soft circuit board. The main circuit board 30 can be a FR-4 dielectric board, a Rogers dielectric board, a mixed dielectric board of FR-4 and Rogers, etc. Here, FR-4 is a code for a flame retardant material grade, and Rogers dielectric board is a high-frequency board.

[0095] The auxiliary circuit board 40 is used to integrate electronic components such as the RF front end of the antenna (such as a 5G antenna), a universal serial bus (USB) device, and a vibrator. The auxiliary circuit board 40 can be fixed to the surface of the middle plate 20. Exemplarily, the auxiliary circuit board 40 can be fixed to the surface of the middle plate 20 by means of threaded connection, clamping, gluing, or welding.

[0096] Similarly, the auxiliary circuit board 40 can be a hard circuit board, a flexible circuit board, or a combination of hard and soft circuit board. The auxiliary circuit board 40 can be a FR-4 dielectric board, a Rogers dielectric board, a mixed dielectric board of FR-4 and Rogers, and so on.

[0097] The battery 50 is used to provide power to the main circuit board 30, the auxiliary circuit board 40 and the display module 10. In some embodiments, the surface of the middle plate 20 away from the display module 10 is provided with a mounting groove 20a, and the battery 50 is installed in the mounting groove 20a.

[0098] The battery 50 may include but is not limited to a nickel-cadmium battery, a nickel-metal hydride battery, a lithium battery or other types of batteries. In addition, the number of the battery 50 in the embodiment of the present application may be multiple or one, and the specific number and arrangement of the battery 50 in the embodiment of the present application may be set according to actual needs.

[0099] The housing 60 is used to protect the electronic components such as the main circuit board 30 , the auxiliary circuit board 40 , and the battery 50 inside the electronic device 100 . The housing 60 may include a bottom plate 61 and an outer frame 62 .

[0100] The bottom plate 61 is located on the side of the display screen 12 away from the transparent cover plate 11, and is stacked with the transparent cover plate 11 and the display screen 12. The material of the bottom plate 61 includes but is not limited to ceramic, glass, metal, plastic, etc. This application uses the material of the bottom plate 61 as metal for example.

[0101] The outer frame 62 is located between the bottom plate 61 and the light-transmitting cover plate 11. The light-transmitting cover plate 11 is fixed on the outer frame 62, so that the light-transmitting cover plate 11, the bottom plate 61 and the outer frame 62 enclose an internal accommodation space of the electronic device 100, and electronic components such as the main circuit board 30, the auxiliary circuit board 40, and the battery 50 are all arranged in the internal accommodation space.

[0102] The outer frame 62 is fixed to the bottom plate 61. For example, the outer frame 62 can be fixedly connected to the bottom plate 61 by bonding, threading, welding, clamping, etc. The outer frame 62 can also be an integrally formed structure with the bottom plate 61, that is, the outer frame 62 and the bottom plate 61 are a whole structure. This application is described by taking the outer frame 62 and the bottom plate 61 as an example of an integrally formed structure.

[0103] The material of the outer frame 62 is, but not limited to, ceramic, glass, metal, plastic, etc. This application uses the outer frame 62 being made of metal as an example for explanation, that is, in the following embodiments, the outer frame 62 and the bottom plate 61 are both made of metal and are integrally formed.

[0104] Please continue reading Figure 2, the electronic device 100 also includes an antenna 70, which includes but is not limited to a global navigation satellite system (GNSS) antenna, a Bluetooth (BT) antenna, a cellular antenna and a wireless local area network (WLAN) (such as a wireless fidelity (Wi-Fi) network) antenna. The GNSS antenna is used to implement the navigation function, and the GNSS antenna may include but is not limited to a global positioning system (GPS) antenna, a global navigation satellite system (GLONASS) antenna and a Beidou navigation satellite system (BDS) antenna. The BT antenna is used to implement the Bluetooth function. The cellular antenna can be used to implement the call function. The cellular antenna can cover the 2G, 3G, 4G, 5G, long term evolution (LTE) frequency band, citizen broadband radio service (CBRS) frequency band and 5G new radio (NR) frequency band range.

[0105] The antenna 70 is used to support the wireless communication function of the electronic device 100. In some embodiments, the antenna 70 can be disposed on the middle plate 40 of the electronic device 100, such as Figure 2 In some other embodiments, the antenna 70 may also be disposed on the housing 60 of the electronic device 100 .

[0106] Since the electromagnetic waves emitted by the antenna 70 cannot penetrate metal, when the shell 60 is a metal shell, a signal penetration area needs to be opened on the metal shell so that the antenna signal can pass through the shell 60 from the signal penetration area to meet the communication performance of the antenna 70.

[0107] For the convenience of describing the embodiments below, the surface of each component in the housing 60 facing the accommodating space is defined as the inner surface, and the surface of each component in the housing 60 facing away from the accommodating space is defined as the outer surface. For any component in the housing 60, its inner surface and its outer surface are two surfaces opposite to each other in a direction perpendicular to its thickness.

[0108] See also Figure 3 and Figure 4 , Figure 3 is a schematic diagram of the structure of the housing 60 viewed from the outer surface, Figure 4 for Figure 3The housing 60 is provided as a schematic diagram of the structure viewed from the inner surface. The housing 60 further includes a first slit a1 and a second slit a2 for the signal of the antenna 70 to pass through.

[0109] A first slit a1 is provided on the bottom plate 61, and the first slit a1 passes through the outer surface and the inner surface of the bottom plate 61; a second slit a2 is provided on the outer frame 62, and the second slit a2 passes through the outer surface and the inner surface of the outer frame 62. The first slit a1 and the second slit a2 are filled with an injection molded part 64. Thus, the first slit a1, the second slit a2 and the injection molded part 64 filled therein form a signal penetration area for receiving and releasing antenna signals.

[0110] In some embodiments, in order to provide grounding for the antenna 70, the housing 60 further includes a bridge 63. The bridge 63 is disposed in the first slot a1, and the bridge 63 connects two ends of the first slot a1 to facilitate grounding of the antenna 70. The bridge 63 is also made of metal and is integrally formed with the bottom plate 61 and the outer frame 62.

[0111] In the preparation of Figure 3 and Figure 4 In the process of manufacturing the housing 60 shown in FIG. 1 , the entire metal profile is first processed by computer numerical control (CNC) processing to form the outer frame 62, the bottom plate 61, the first slit a1, the second slit a2, the bridge and other structures in the housing 60. Then, the first slit a1 and the second slit a2 are filled with injection molded parts, so that the injection molded parts are tightly connected to the first slit a1 and the second slit a2 to ensure the overall structural strength of the housing 60.

[0112] Among them, CNC machining is a processing method that inputs digital control program instructions into the CNC system, compiles and calculates through the computer, and transmits information to the driver through the displacement control system to drive the motor to cut and process the designed parts. Usually, the machine tool (machine tool) controlled by the computer is generally called CNC.

[0113] See also Figure 5 , Figure 5 is a process flow chart of a method for preparing a housing 60, wherein Figure 5 The preparation method provided in the embodiment can prepare the housing 60 having the above-mentioned signal penetration area. The preparation method specifically includes:

[0114] S1, CNC machining the metal block to form an intermediate structure 200. The intermediate structure 200 includes an outer frame 62, a bottom plate 61, a first slit a1 and a second slit a2, such as Figure 6 and Figure 7 As shown, Figure 6 is a schematic diagram of the process of executing step S1, Figure 7 for Figure 6 A partial enlarged schematic diagram of the intermediate structure 200 in area A.

[0115] In order to compensate for the material loss during the preparation process and ensure sufficient raw materials for processing, the volume of the metal block needs to be larger than the volume of the finished shell. In some embodiments, the thickness of the metal block is 10 mm, 50 mm or 150 mm.

[0116] The material of the metal block is aluminum, aluminum alloy, magnesium alloy, aluminum-magnesium alloy, lithium-magnesium alloy, steel, titanium alloy, copper alloy, etc. The present application is described by taking the example that the material of the intermediate structural member 200 is aluminum alloy.

[0117] S2 , forming an injection molded part 64 in the first opening a1 and the second opening a2 to form a housing 60 .

[0118] See also Figure 8 , Figure 8 FIG. 4 is a schematic diagram of a partial structure of the housing 60 obtained after executing step S2 .

[0119] S3, the shell 60 is processed to achieve the corresponding appearance effect, so as to obtain Figure 3 The housing 60 is shown.

[0120] In use Figure 5 The method shown is prepared Figure 3 In the metal shell 60 shown, the CNC process is used in the process of processing and forming the metal material of the shell 60, that is, the bottom plate 61, the outer frame 62, the first slit a1 and the second slit a2 are all formed on a whole piece of metal blank using the CNC process, which takes a long time to process, is costly, and is not conducive to mass production. At the same time, in order to compensate for the material loss in the preparation process and ensure sufficient processing raw materials, the volume size of the metal block will be larger than the volume of the finished shell, resulting in a large amount of materials and high production costs.

[0121] Therefore, the present application provides a housing 60, see Fig. 9 and Fig.10 , Fig. 9 This is a schematic diagram of the structure of the housing 60 provided in some embodiments of the present application. Fig.10 for Fig. 9 The structure of the remaining part of the housing 60 after removing the injection molded part 64 is shown in another perspective. The housing 60 includes a bottom plate 61 and an outer frame 62. The outer frame 62 is arranged around the outer periphery of the bottom plate 61, and the bottom plate 61 and the outer frame 62 are integrally formed by stamping. The metal material is processed by stamping so that the bottom plate 61 and the outer frame 62 are integrally formed, which reduces the processing time of the CNC process and is conducive to reducing production costs.

[0122] In some embodiments, the bottom plate 61 and the outer frame 62 are formed by stamping a metal sheet, thereby reducing the amount of raw materials used to prepare the housing 60 and lowering the production cost.

[0123] The thickness and size of the metal sheet are selected according to the size requirements of the finished shell. In some embodiments, the thickness of the metal sheet ranges from 0.6 mm to 1.2 mm. For example, the thickness of the metal sheet is 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm or 1.2 mm.

[0124] Correspondingly, when the bottom plate 61 and the outer frame 62 are integrally formed by stamping metal sheets, the thickness of the bottom plate 61 is equal to the thickness of the outer frame 62, and the thickness of the bottom plate 61 and the thickness of the outer frame 62 also range from 0.6 mm to 1.2 mm.

[0125] The present application does not limit the material of the metal sheet. For example, the material of the metal sheet is aluminum, aluminum alloy, magnesium alloy, magnesium aluminum alloy, lithium alloy, lithium magnesium alloy or titanium alloy.

[0126] The bottom plate 61 is provided with a first slit a1 that penetrates the outer surface and the inner surface of the bottom plate 61. The present application does not limit the number of the first slits a1, and for example, the number of the first slits a1 is designed according to the radiation requirements of the antenna 70.

[0127] The outer frame 62 is provided with a second slit a2, which penetrates the outer surface and the inner surface of the outer frame 62. The present application does not limit the number of the first slits, and for example, the number of the second slits a2 is designed according to the radiation requirements of the antenna 70.

[0128] The first opening a1 and the second opening a2 are filled with the injection molded part 64 .

[0129] The present application does not limit the material of the injection molded part 64 . Exemplarily, the material of the injection molded part 64 is plastic.

[0130] The first slit a1 and the second slit a2 are connected. In some embodiments, the ends of the first slit a1 and the second slit a2 are connected. Thus, when the injection molded part 64 is filled in the first slit a1 and the second slit a2, they can be integrally formed, and the process is simple.

[0131] In some embodiments, both ends of the first slit a1 are connected to the end of the second slit a2. Fig.10 As shown in the middle area X1 , two ends of a first slit a1 are respectively connected to the ends of two second slits a2 .

[0132] In some other embodiments, the first slit a1 is connected to the end of the second slit a2 through the position between the two ends of the first slit a1, such as Fig.10As shown in the middle area X2, the middle position between the two ends of a first slit a1 is connected to the ends of multiple second slits a2 respectively, and a part of the first slit a1 is connected to the end of a second slit a2, presenting as shown in FIG. Fig.11 The "T" shape shown, where Fig.11 for Fig.10 A partial enlarged schematic diagram of area B in the housing 60 is provided.

[0133] Please continue reading Fig.11 The first slit a1 includes a first side wall b1 and a second side wall b2 that are opposite to each other.

[0134] The housing 60 further includes a bridge 63. The bridge 63 is disposed in the injection molded part 64 of the first slot a1, and the first side wall b1 of the first slot a1 is connected to the second side wall b2 via the bridge 63.

[0135] In some embodiments, the number of bridges is reserved according to the design requirements of the antenna 70. The present application does not limit the number of bridges 63. For example, the number of bridges 63 is 1, 2, 3, 4, 5, 6 or more.

[0136] The bridge 63 is bent in a direction away from the outer surface of the bottom plate 61. Fig.11 As shown, the outer surface of the bottom plate 61 is located outside the housing 60 .

[0137] In this way, the bottom plate 61 and the outer frame 62 in the shell 60 are integrally formed by stamping, which reduces the processing time of the CNC process of the shell 60 during the preparation process, reduces the processing cost, and is conducive to the mass production of the shell 60. At the same time, the setting of the bridge 63 can be used to connect the first side wall b1 and the second side wall b2 on both sides of the first slit a1 during the preparation process, increase the structural strength of the shell 60, and avoid deformation of the shell 60 during the subsequent preparation process, and can also be used for grounding the antenna 70. In addition, the bridge 63 is bent in the direction away from the outer surface of the bottom plate 61, so that the outer surface of the bridge 63 has an injection molded part 64 of a certain thickness, which increases the consistency of the appearance of the injection molded part 64 and improves the overall structural strength of the injection molded part 64.

[0138] There is a certain height difference between the bottom of the outer surface of the bridge 63 and the outer surface of the bottom plate 61 to ensure the thickness of the injection molded part 64 located on the outer surface of the bridge 63 and to increase the overall structural strength of the injection molded part 64. Fig.12 , Fig.12 The schematic diagram of the partial cross-sectional structure of the housing 60 provided in some embodiments of the present application is as follows: The height difference between the bottom of the outer surface of the bridge 63 and the outer surface of the bottom plate 61 is a first height h1.

[0139] In some embodiments, the first height h1 is at least 0.5 mm, and the first height h1 is at most the thickness of the bottom plate 61. Since the bottom plate 61 is formed by stamping from a metal sheet, the maximum thickness of the bottom plate 61 is the same as the maximum thickness of the metal sheet, which is also 1.2 mm. Therefore, the first height h1 ranges from 0.4 mm to 1.2 mm. Exemplarily, the height difference between the bottom of the outer surface of the bridge 63 and the outer surface of the bottom plate 61 is 0.4 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, or 1.2 mm.

[0140] In some embodiments, the height difference between the bottom of the outer surface of the bridge 63 and the outer surface of the bottom plate 61 can be achieved by stamping. For example, the bottom of the outer surface of the bridge 63 and the outer surface of the bottom plate 61 can be stamped in the same process by stamping, so that the bottom of the outer surface of the bridge 63 and the outer surface of the bottom plate 61 have a height difference of the first height h1. This simplifies the preparation method of the housing 60.

[0141] It is understandable that in other examples, after the bottom plate 61 and the outer frame 62 are formed by stamping, the prototype of the bridge 63 may be partially stamped, so that the outer surface of the bridge 63 is bent in a direction away from the outer surface of the bottom plate 61, and a height difference of the first height h1 is formed between the bottom of the outer surface of the bridge 63 and the outer surface of the bottom plate 61. Thus, the stamping is performed in sections, which facilitates the design of the stamping die.

[0142] Similarly, in other embodiments, the height difference between the outer surface of the bridge 63 and the outer surface of the bottom plate 61 may be achieved by CNC machining or cold heading.

[0143] See also Fig.13 , Fig.13 The schematic diagram of the partial cross-section structure of the housing 60 provided in some other embodiments of the present application shows that the outer surface of the bottom plate 61 and the outer surface of the bridge 63 form a step t. The outer surface of the bridge 63 is located outside the housing 60.

[0144] The step t is formed by the outer surface of the bottom plate 61 sinking to the outer surface of the bridge 63. The height of the step t is the second height h2. In order to ensure that the injection molded part on the outer surface of the bridge has sufficient thickness, in some embodiments, the minimum value of the second height h2 is 0.3mm, and the maximum height of the second height h2 is 80% of the thickness of the bottom plate 61. Similarly, when the maximum thickness of the bottom plate 61 is the same as the maximum thickness of the metal plate 1.2mm, the range of the second height h2 is between 0.3mm-0.96mm. Exemplarily, the second height difference h2 is 0.3mm, 0.35mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 0.96mm.

[0145] In this way, the setting of the step t allows the entire outer surface of the bridge 63 to be covered by the injection molded part 64, so that the outer surface of the injection molded part 64 is a continuous surface when viewed from the outer surface of the shell 60, thereby increasing the overall strength of the injection molded part 64 and improving the appearance of the shell 60.

[0146] In some embodiments, see Fig.14 , Fig.14 This is a schematic diagram of the partial structure of the housing 60 provided in some embodiments of the present application after removing the injection molded part 64. The bridge 63 includes a first part c1, a second part c2 and a third part c3. One end of the first part c1 is connected to the first side wall b1, one end of the second part c2 is connected to the second side wall b2, and the first part c1 and the second part c2 are connected through the third part c3.

[0147] The housing 60 further includes a connecting portion 63a. The connecting portion 63a is disposed in the injection molded part of the first slit a1. The connecting portion 63a includes a first connecting portion 63a1 and a second connecting portion 63a2.

[0148] One end of the first connection portion 63a1 is connected to the first side wall b1, and one end of the second connection portion 63a2 is connected to the second side wall b2. The first connection portion 63a1 and the second connection portion 63a2 are spaced apart from each other.

[0149] During the preparation of the shell 60, the connection portion 63a is formed by disconnecting the bridge 63. That is, during the preparation of the shell 60, the bridge 63 is first set in the first slit a1 to connect the first side wall b1 and the second side wall b2 on both sides of the first slit a1 together to increase the overall strength of the shell 60 during the processing. Afterwards, before the final shell 60 is formed, the unnecessary bridge 63 can be disconnected according to the grounding requirements of the antenna 70 to form the connection portion 63a, so as to increase the area of ​​the signal penetration zone and improve the signal transmittance of the antenna 70.

[0150] In the process of preparing the shell 60 , before the bridge is disconnected, the first connection portion 63a1 of the connection portion 63a shown in the figure is the first part c1 of the bridge 63 , and the second connection portion 63a2 of the connection portion 63a is the second part c2 of the bridge 63 .

[0151] In some embodiments, see Fig.15 , Fig.15 for Fig. 9 A partial enlarged schematic diagram of area C in the housing 60 is provided. A first groove 64a1 is provided on the inner surface of the injection molded part 64. The inner surface of the injection molded part 64 is located on the inner side of the housing 60.

[0152] See also Fig.16 , Fig.16The schematic diagram of the partial cross-sectional structure of the housing 60 provided in some embodiments of the present application. The first groove 64a1 includes a third side wall b3 and a fourth side wall b4 opposite to each other. The third side wall b3 is close to the first side wall b1, and the fourth side wall b4 is located between the third side wall b3 and the second side wall b2.

[0153] The other end of the first connection portion 63a1 is located on the third side wall b3, and the other end of the second connection portion 63a2 is located on the fourth side wall b4.

[0154] The other end of the first connection portion 63a1 is located on the third side wall b3, which means that the other end of the first connection portion 63a1 is exposed on the third side wall b3 and can be seen from the first side wall b1 by naked eyes. The other end of the second connection portion 63a2 is located on the fourth side wall b4 in the same way.

[0155] The first groove 64a1 is formed by removing a portion of the injection molded part 64. That is, in the process of preparing the housing 60, the injection molded part 64 is first filled into the first slit a1, and after the filling is completed, the first groove 64a1 is formed by removing a portion of the bridge 63 and the injection molded part 64 located on the surface of the bridge 63 according to the grounding requirements of the antenna 70, so as to disconnect the unnecessary bridge 63 and form the connecting portion 63a.

[0156] The shape of the first groove 64a1 is determined by the processing method, and the present application does not limit this. Exemplarily, the shape of the first groove 64a1 is a cuboid, a cylinder, an elliptical cylinder or a special-shaped cylinder.

[0157] The present application does not limit the processing method of the first groove 64a1. In some implementations, the first groove 64a1 can be milled at a preset position of the injection molded part 64 by a CNC machine tool to disconnect the bridge 63.

[0158] It is understandable that, in some other embodiments, drilling, laser engraving, etc. may be used to form the first groove 64 a 1 at a preset position of the injection molded part 64 to disconnect the bridge 63 .

[0159] The present application does not limit the number of the first grooves 64a1. For example, the number of the first grooves 64a1 is 1, 2, 3, 4, 5, 6 or more.

[0160] The setting of the first groove 64a1 allows, during the preparation process of the shell 60, the portion of the bridge 63 not used for grounding the antenna 70 to be disconnected after the injection molded part 64 is prepared, so that in the previous preparation step, the bridge 63 that is not disconnected can connect the first side wall b1 and the second side wall b2 of the first slit a1 during the preparation process of the shell 60, thereby increasing the structural strength of the shell 60 and reducing the deformation of the shell 60 in the corresponding process.

[0161] In some other embodiments, see Fig.17 , Fig.17 This is a schematic diagram of a partial cross-sectional structure of a housing 60 provided in some further embodiments of the present application, and a second groove 64a2 is provided on the inner surface of the injection molded part 64.

[0162] The second groove 64a2 includes a fifth side wall b5 and a sixth side wall b6 that are opposite to each other. The fifth side wall b5 is coplanar with the first side wall b1, and the sixth side wall b6 is coplanar with the second side wall b2.

[0163] In the process of preparing the housing 60 , the bridge 63 is removed by forming the second groove 64 a 2 .

[0164] Therefore, in the preparation process of the housing 60, after the injection molded part 64 is prepared, a second groove 63a2 can be set on the inner surface of the injection molded part 64, so that the part of the bridge 63 that is not used for the grounding of the antenna 70 is completely removed, that is, the bridge 63 that is not disconnected in the previous preparation step of the housing 60 can be used to connect the first side wall b1 and the second side wall b2 of the first slit a1 to enhance the structural strength of the housing 60, reduce the deformation of the housing 60 in the corresponding process, and increase the area of ​​the first slit a1 to increase the area of ​​the signal penetration area and improve the signal transmittance of the antenna 70. At this time, the width of the second groove 64a2 is equal to the width of the first slit a1.

[0165] The optional shape, number, and processing method of the second groove 64a2 are the same as those of the first groove 64a1, and will not be described again here.

[0166] It can be understood that in some other embodiments, the inner surface of the injection molded part 64 may be provided with both the first groove 64a1 and the second groove 64a2.

[0167] The above is a description of the structure of the shell 60 provided in the embodiment of the present application. The following is a description of the method for preparing the shell 60 provided in the embodiment of the present application.

[0168] See also Fig.18 , Fig.18 A flowchart of a method for preparing a housing 60 provided in some embodiments of the present application, the steps comprising:

[0169] S10, stamping the metal sheet to form an intermediate structure 200, such as Fig.19 shown.

[0170] Fig.19 For execution Fig.18 A schematic structural diagram of an intermediate structure 200 obtained after step S10 is shown. The intermediate structure 200 includes a bottom plate 61 and an outer frame 62 surrounding the bottom plate 61 . The outer frame 62 extends in a direction away from the outer surface of the bottom plate 61 .

[0171] The bottom plate 61 is provided with a first slit a1. The first slit a1 passes through the outer surface and the inner surface of the bottom plate 61. The first slit a1 passes through the outer surface and the inner surface of the bottom plate 61. The present application does not limit the number of the first slits a1. For example, the number of the first slits a1 is designed according to the radiation requirements of the antenna 70.

[0172] See also Fig. 20 , Fig. 20 for Fig.19 The schematic partial enlargement of the region D in the intermediate structure 200 is shown. The first slit a1 includes a first side wall b1 and a second side wall b2 that are opposite to each other.

[0173] A plurality of bridges 63 are provided in the first slit a1 , and the first side wall b1 of the first slit a1 is connected to the second side wall b2 via the bridges 63 .

[0174] The outer frame 62 is provided with a second slit a2, which penetrates the outer surface and the inner surface of the outer frame 62. The present application does not limit the number of the first slits, and for example, the number of the second slits a2 is designed according to the radiation requirements of the antenna 70.

[0175] The first slit a1 and the second slit a2 are connected. In some embodiments, the ends of the first slit a1 and the second slit a2 are connected. Thus, when the injection molded part 64 is filled in the first slit a1 and the second slit a2, they can be integrally formed, and the process is simple.

[0176] The present application does not limit the material of the metal sheet. For example, the material of the metal sheet is aluminum alloy, magnesium alloy, magnesium-aluminum alloy or titanium alloy.

[0177] The metal sheet is in the form of a thin sheet, thereby reducing the amount of raw materials used and reducing costs while ensuring the strength of the housing 60. In some embodiments, the thickness of the metal sheet is between 0.6 mm and 1.2 mm. For example, the thickness of the metal sheet is 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm or 1.2 mm.

[0178] In some embodiments, the bottom plate 61 and the outer frame 62 are stamped from the same metal sheet, and the bottom plate 61 and the outer frame 62 have the same thickness. Thus, the intermediate structure 200 can be obtained by stamping and integrally forming using only one metal sheet, and the preparation method is simple.

[0179] The bottom plate 61, the outer frame 62, the first slit a1 and the second slit a2 are all integrally formed by stamping the metal sheet 1. Fig.19 and Fig. 20 The outer surface of the bridge 63 is coplanar with the outer surface of the bottom plate 61 .

[0180] S11, punching the bridge 63 so that the bridge 63 is bent in a direction away from the outer surface of the bottom plate 61, such as Fig.21 As shown, Fig.21 For execution Fig.18 A schematic diagram of a partial structure of an intermediate structural member 200 obtained after step S11.

[0181] By stamping the bridge 63 , a height difference is created between the bottom of the outer surface of the bridge 63 and the outer surface of the bottom plate 61 , so as to ensure the thickness of the injection molded part 64 located on the outer surface of the bridge 63 and increase the overall structural strength of the injection molded part 64 .

[0182] In some embodiments, the depth range of the bridge 63 bending in the direction away from the outer surface of the bottom plate 61 is a first height h1. Fig.12 As shown. The first height h1 is at least 0.5 mm, and the first height h1 is at most the thickness of the bottom plate 61. Since the bottom plate 61 is formed by stamping a metal sheet, the maximum thickness of the bottom plate 61 is the same as the maximum thickness of the metal sheet, which is also 1.2 mm. Therefore, the first height h1 ranges from 0.5 mm to 1.2 mm. Exemplarily, the first height h1 is 0.5 mm, 0.55 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm or 1.2 mm in the depth range of the bridge 63 bending in the direction away from the outer surface of the bottom plate 61.

[0183] It is understandable that, in some embodiments, step S11 may also be performed together with step S10, that is, when stamping the metal sheet 1, the intermediate structure 200 in step S10 is stamped out at the same time and the bridge 63 is bent in a direction away from the outer surface of the bottom plate 61, thereby simplifying the preparation method of the shell 60.

[0184] S16, forming an injection molded part 64 in the first opening a1 and the second opening a2 to form Fig. 9 The housing 60 shown in FIG. 1 is a housing 60 in which the injection molded part covers the bridge 63. Fig.21 and Fig. 22 , Fig. 22 For execution Fig.18 A schematic diagram of the partial structure of the housing 60 obtained after step S16.

[0185] The present application does not limit the material of the injection molded part 64, as long as the signal of the antenna 70 can penetrate the injection molded part 64. Exemplarily, the material of the injection molded part 64 is plastic.

[0186] In this way, the bottom plate 61 and the outer frame 62 are integrally formed by stamping the metal sheet, which reduces the processing time of the CNC process of the shell 60 during the preparation process, reduces the processing cost, and is conducive to the mass production of the shell 60. At the same time, the bridge 63 is formed by stamping, and the bridge 63 can be used to connect the first side wall b1 and the second side wall b2 on both sides of the first slit a1 during the preparation process of the shell 60, increase the structural strength of the shell 60, and reduce the deformation of the shell 60 in the subsequent preparation process. The bridge 63 can also be used for grounding the antenna 70. In addition, during preparation, the injection molded part 64 covers the bridge 63, which increases the consistency of the appearance of the injection molded part 64 and improves the overall structural strength of the injection molded part 64.

[0187] In order to increase the bonding force between the injection molded part 64 and the side wall of the first slot a1 and the side wall of the second slot a2 and improve the overall structural strength of the housing 60, please refer to Fig.23 , Fig.23 A flowchart of a method for preparing a housing 60 provided in some other embodiments of the present application, which is Fig.18 The difference of the preparation method of the shell 60 provided is that before performing step S16, that is, before forming the injection molded part 64 in the first slit a1 and the second slit a2, the preparation method of the shell 60 further includes:

[0188] S13, performing surface treatment on the intermediate structure 200, forming a large number of micropores k1 on the side walls of the first slit a1 and the second slit a2. Fig.24 As shown, Fig.24 For execution Fig.23 The partial structural diagram of the intermediate structure 200 obtained after step S13, Fig.24 The distribution area of ​​micropores k1 is schematically shown in FIG.

[0189] In some embodiments, the method of performing surface treatment on the intermediate structure 200 includes:

[0190] S131, placing the intermediate structure 200 in a chemical solution for etching, so that the side wall of the first slit a1 and the side wall of the second slit a2 are in contact with the chemical solution, and forming Fig.24 The large number of micropores k1 shown here makes the process simple.

[0191] In some embodiments, the chemical solution is an acidic solution to erode a large number of micropores k1 on the side walls of the first slit a1 and the second slit a2. It is understandable that, in combination with the material properties of the raw metal sheet for preparing the shell 60, in other embodiments, the chemical solution may also be a solution of other properties, as long as a large number of micropores k1 can be etched on the side walls of the first slit a1 and the second slit a2.

[0192] In some embodiments, the micropore k1 is a blind hole, that is, the micropore k1 is a hole with an opening on the surface of the material but the interior is not connected to the other side of the material, and the injection molded part 64 shell is filled in the micropore k1.

[0193] In this way, during the process of forming the injection molded part 64 in the first slit a1 and the second slit a2, the injection molded part 64 is filled into the micropore k1, so that a better structural connection is formed between the injection molded part 64 and the side walls of the first slit a1 and the side walls of the second slit a2, thereby enhancing the bonding force between the injection molded part 64 and the side walls of the first slit a1 and the side walls of the second slit a2, and improving the structural strength of the shell 60.

[0194] In some embodiments, the injection molded part 64 is obtained by injection molding. The injection molded part 64 will penetrate into the micropores k1 on the surface of the intermediate structure 200, so that there is a strong bonding force between the injection molded part 64 and the intermediate structure 200, thereby improving the overall structural strength of the housing 60.

[0195] Due to fluctuations in the manufacturing process and mold processing tolerances, when the injection molded part 64 is formed in the first slit a1 and the second slit a2, the injection molded part will overflow from the first slit a1 and the second slit a2 during injection molding, forming a cloak 64a at the connection between the first slit a1 and the surface of the bottom plate 61 and at the connection between the second slit a2 and the surface of the outer frame 62. Fig.25 As shown, Fig.25 For execution Fig.18 A schematic diagram of the partial structure of the housing 60 obtained after step S16.

[0196] At the same time, in step 13, the intermediate structural member is subjected to surface treatment to form a surface treatment on the side wall of the first slit a1 and the side wall of the second slit a2. Fig.24 When a large number of micro holes k1 are formed as shown, it is easy to form the above-mentioned micro holes k1 on the surface of the outer frame 62 on the surface of the bottom plate 61.

[0197] For example, when step 131 is performed, the intermediate structure 200 is placed in a chemical solution for etching to form a large number of micropores k1 on the side walls of the first slit a1 and the second slit a2, it is easy for the surface of the bottom plate 61 and the surface of the outer frame 62 to also contact with the chemical solution and form the above-mentioned micropores k2 on the surface of the bottom plate 61 and the surface of the outer frame 62. Fig.26 As shown, Fig.26 It is a schematic diagram of a partial cross-sectional structure of an intermediate structural component 200 obtained after executing step S131.

[0198] The present application does not limit the shape of the micropore k1. For example, Fig.26 As shown, the microhole k1 is an irregular shaped blind hole.

[0199] As a result, the injection molded part 64 in the cloak 64a is embedded in the micropore k1, so that the cloak 64a has a strong bonding force with the surface of the shell 60, such as Fig. 27 As shown, Fig. 27 For use Fig.26 The intermediate structure 200 shown performs Fig.18 Schematic diagram of the partial cross-sectional structure of the shell 60 obtained after step S16. The plastic particles in the cloak 64a penetrate into the micropores k1 on the surface of the bottom plate 61 and the surface of the outer frame 62, making it difficult to remove the cloak 64a by grinding. Therefore, in order to ensure the appearance of the finished shell 60, it is necessary to remove the cloak 64a on the surface of the outer frame 62 on the surface of the bottom plate 61 by CNC machining when the shell 60 is processed for appearance, so that the outer surface of the shell 60 is smooth, which increases the processing time of the CNC machining process and increases the preparation cost of the shell 60.

[0200] Therefore, please refer to Fig.28 , Fig.28 A flowchart of a method for preparing a housing 60 provided in some embodiments of the present application, which is Fig.23 The difference of the preparation method of the shell 60 provided is that, before performing surface treatment on the intermediate structure 200 in step S13, the preparation method of the shell 60 further includes:

[0201] S12 , forming a shielding layer 65 on the outer surface of the bottom plate 61 and the outer surface of the outer frame 62 .

[0202] like Fig.29 As shown, Fig.29 The schematic diagram of the partial cross-sectional structure of another intermediate structure 200 obtained after executing step S12 and step S13 is shown. The shielding layer 65 can prevent micropores k1 from being formed on the surface of the bottom plate 61 and the outer frame 62 when the intermediate structure 200 covered by the shielding layer 65 is subjected to surface treatment in step S13. After the shielding layer 65 is formed on the surface of the bottom plate 61 and the outer frame 62, the micropores k1 are only formed on the side walls of the first slit a1 and the second slit a2.

[0203] It should be noted that Fig.29 In the figure, only the intermediate structural member 200 on both sides of the first slit a1 is schematically illustrated in cross section, and a large number of micropores k1 are formed on the first side wall b1 and the second side wall b2 of the first slit a1. The second slit a2 has a similar side wall form to the first slit a1, and both have two parallel and opposite side walls. Therefore, in the foregoing and subsequent embodiments, when it is necessary to schematically illustrate the structures on both sides of the first slit a1 and the second slit a2 in cross section, the first slit a1 is used as a representative.

[0204] The present application does not limit the material of the shielding layer 65, as long as the intermediate structure 200 is subjected to surface treatment in step S13, the region of the intermediate structure 200 covered by the shielding layer 65 does not generate micropores k1. In some embodiments, when an acidic solution is used to form the micropores k1, the material of the shielding layer is a material that is not corroded by the acid solution, such as polymer ink.

[0205] The present application does not limit the method for forming the shielding layer 65 . In some implementations, the shielding layer 65 can be formed on the surface of the bottom plate 61 and the outer frame 62 by coating, spraying, pad printing, screen printing, etc.

[0206] In some embodiments, the method of providing the shielding layer 65 on the outer surface of the bottom plate 61 and the outer surface of the outer frame 62 includes:

[0207] S121, a shielding layer 65 is provided on the surface of the intermediate structure 200. Fig.30 and Fig.31 As shown, Fig.30 is a schematic diagram of a partial structure of the intermediate structural member 200 obtained after executing step S121, Fig.31 It is a schematic diagram of a partial cross-sectional structure of the intermediate structural member 200 obtained after executing step S121.

[0208] S122, remove the side wall of the first slit a1, the side wall of the second slit a2 and the shielding layer 65 on the surface of the bridge 63, and keep the shielding layer 65 on the surface of the bottom plate 61 and the outer frame 62. Fig.32 As shown, Fig.32 It is a schematic diagram of a partial cross-sectional structure of the intermediate structural member 200 obtained after executing step S122.

[0209] In some embodiments, the method of removing the side walls of the first slit a1 and the second slit a2 and the shielding layer 65 on the surface of the bridge 63 in step S122 includes:

[0210] S1221, remove the side wall of the first slit a1, the side wall of the second slit a2 and the shielding layer 65 on the surface of the bridge 63 by CNC machining, thereby improving the machining accuracy.

[0211] It is understandable that in other embodiments, local grinding or local setting of a dissolving liquid may be used to remove the side walls of the first slit a1, the side walls of the second slit a2 and the shielding layer 65 on the surface of the bridge 63, which is not limited by processing equipment.

[0212] The shielding layer 65 is provided on the outer surface of the bottom plate 61 and the outer surface of the outer frame 62, so that when the intermediate structure 200 is subjected to surface treatment in step S13, the micropores k1 are not formed on the surface of the bottom plate 61 and the outer frame 62, so that the bonding force between the surface of the bottom plate 61 and the outer frame 62 and the injection molded part 64 is reduced. Fig.25 and Fig. 27 The bonding force between the cloaks 64a shown is reduced, and the cloaks 64a can be removed by grinding only without CNC machining, which reduces the processing time of the CNC machining process and reduces the preparation cost of the shell 60.

[0213] At the same time, by forming the shielding layer 65 on the surface of the bottom plate 61 and the surface of the outer frame 62 through the above-mentioned two steps S121 and S122, it can be ensured that the shielding layer 65 is only formed on the surface of the bottom plate 61 and the surface of the outer frame 62, and the shielding layer 65 is prevented from splashing or being mistakenly set on the side walls of the first slit a1 and the second slit a2 and the surface of the bridge 63 to affect the bonding force between the injection molded part 64 and the side walls of the first slit a1 and the second slit a2 in the subsequent step S16, thereby improving the accuracy of the setting of the shielding layer 65.

[0214] See also Fig.33 , Fig.33 The flowchart of the method for preparing the housing 60 provided in some embodiments of the present application, when the method for preparing the housing 60 including step S12 of forming the shielding layer 65 on the surface of the bottom plate 61 and the outer frame 62 is used, Fig.33 The preparation method shown is Fig.28 The difference between the preparation method shown is that after executing step S13 and performing surface treatment on the intermediate structure 200, the preparation method of the shell 60 further includes:

[0215] S14, removing the shielding layer on the surface of the bottom plate 61 and the outer frame 62.

[0216] After the intermediate structure 200 is surface treated, the masking layer on the surface of the bottom plate 61 and the outer frame 62 is removed, so that the outer surface of the injection molded part 64 formed in the subsequent step S16 is flush with the outer surface of the bottom plate 61 and the outer frame 62, thereby improving the consistency of the appearance of the shell 60.

[0217] In some embodiments, the method of removing the shielding layer 65 on the surface of the bottom plate 61 and the outer frame 62 includes:

[0218] S141 , immersing the housing 60 in a chemical reagent to remove the shielding layer 65 on the surface of the bottom plate 61 and the outer frame 62 .

[0219] The chemical reagent is a material that can dissolve the shielding layer 65 and will not affect the metal. For example, when the shielding layer 65 is made of polymer ink, the material of the chemical reagent includes an organic solvent.

[0220] In this way, step S14 of removing the shielding layer 65 on the surface of the bottom plate 61 and the outer frame 62 can be completed on the same production line as step S13 of surface treating the intermediate structure 200 , and only corresponding solutions need to be replaced, thereby simplifying the preparation process.

[0221] It is understandable that, in some other embodiments, the method of removing the shielding layer 65 on the surface of the bottom plate 61 and the outer frame 62 also includes:

[0222] S142 , using mechanical polishing or grinding to remove the shielding layer 65 on the surface of the bottom plate 61 and the outer frame 62 .

[0223] like Fig.34 As shown, Fig.34 A flowchart of a method for preparing a housing 60 provided in some other embodiments of the present application, which is similar to Fig.18 The difference between the method for preparing the housing 60 shown is that Fig.34 The intermediate structure 200 formed in step S10 of the shell preparation method shown in FIG. 1 further includes: a connecting material 66, such as Fig.35 As shown, Fig.35 For execution Fig.18 Schematic diagram of another intermediate structural member 200 formed in step S10. The connecting material 66 is connected to the outer frame 62.

[0224] In some embodiments, a plurality of positioning holes 66 a are formed on the connecting material 66 . When the intermediate structure 200 obtained after executing step S10 is subsequently processed, the positioning holes 66 a can be used to position the intermediate structure 200 to improve the processing accuracy.

[0225] After forming the injection molded part 64 in the first slit a1 and the second slit a2 in step S16, Fig.34 The method for preparing the housing 60 shown further includes:

[0226] S17, removing the connecting material 66.

[0227] The connecting material 66 is connected to an end surface of the outer frame 62 which is away from the outer surface of the bottom plate 61 .

[0228] The present application does not limit the method of removing the connecting material 66. For example, the connecting material 66 can be removed by CNC machining.

[0229] In this way, the connecting material 66 can be reserved when the metal sheet is stamped in step S10. The connecting material 66 can be used to assist positioning in the subsequent preparation process of the shell 60. At the same time, the connecting material 66 can increase the overall connection strength of the intermediate structure 200 in the preparation process of the shell 60 after step S10, avoiding deformation that may occur in the subsequent production process; in addition, the connecting material 66 can also ensure that the intermediate structure 200 is connected into a whole during the preparation process of the shell 60, so that the overall effect of the product obtained in each subsequent step is consistent, and finally improve the finished product effect of the shell 60.

[0230] See also Fig.36 , Fig.36 A flowchart of a method for preparing a housing 60 provided in some other embodiments of the present application, which is similar to Fig.18 The difference between the manufacturing method of the housing 60 shown is that after executing step S16, before forming the injection molded part 64 in the first slit a1 and the second slit a2, the manufacturing method of the housing 60 further includes:

[0231] S15, forming a gap between the outer surface of the bottom plate 61 and the outer surface of the bridge 63. Fig.13 The step shown is t.

[0232] The outer surface of the bridge 63 is located outside the housing 60. Fig.13 As shown, the step t is formed by the outer surface of the bottom plate 61 sinking to the outer surface of the bridge 63. The height of the step t is the second height h2. In some embodiments, the minimum value of the second height h2 is 0.3 mm, and the maximum height of the second height h2 is 80% of the thickness of the bottom plate 61. Similarly, when the maximum thickness of the bottom plate 61 is the same as the maximum thickness of the metal plate 1.2 mm, the range of the second height h2 is between 0.8 mm and 0.96 mm. Exemplarily, the second height difference h2 is 0.3 mm, 0.35 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm or 0.96 mm.

[0233] In this way, the entire outer surface of the bridge 63 is covered by the injection molded part 64 , so that when viewed from the outer surface of the shell 60 , the outer surface of the injection molded part 64 is a continuous surface, thereby increasing the overall strength of the injection molded part 64 and improving the appearance of the shell 60 .

[0234] In some embodiments, the method of forming a step t between the outer surface of the bottom plate 61 and the bridge 63 includes:

[0235] S151 , forming a step t between the bridge 63 and the outer surface of the bottom plate 61 by CNC machining.

[0236] In this way, the processing accuracy of the step t can be improved. At the same time, when step S121 is included before step S16, step S151 can be performed in the same CNC process as step S1221, that is, the step t can be formed between the bridge 63 and the outer surface of the bottom plate 61 by CNC machining of a numerical control machine tool, and at the same time, the side walls of the first slit a1 and the second slit a2 and the shielding layer 65 on the surface of the bridge 63 are removed, thereby simplifying the process.

[0237] See also Fig.37 , Fig.37 A flowchart of a method for preparing a housing 60 provided in some other embodiments of the present application, which is Fig.18 The difference between the manufacturing method of the housing 60 shown in the figure is that after executing step S16, after the injection molded part 64 is formed in the first slit a1 and the second slit a2, Fig.37 The method for preparing the housing 60 shown further includes:

[0238] S20 , disconnecting a portion of the bridge 63 and the injection molded part 64 located on the inner surface of the bridge 63 on the inner side of the housing 60 , wherein the inner surface of the bridge 63 is located on the inner side of the housing 60 .

[0239] In this way, the bridge 63 can be used to connect the two sides of the first slit a1 to increase the structural strength of the shell 60 during the previous preparation process, and the unnecessary bridge 63 can be disconnected according to the grounding requirements of the antenna 70 after the shell 60 is formed, thereby increasing the area of ​​the signal penetration zone and further ensuring the propagation strength of the antenna 70.

[0240] It is understandable that when the bridge 63 is not needed to provide grounding for the antenna 70 , all the bridges 63 and the injection molded parts 64 located on the inner surface of the bridge 63 may be disconnected in step S20 .

[0241] In some embodiments, Fig.14 As shown, the bridge 63 includes a first portion c1 connected to the first side wall b1, a second portion c2 connected to the second side wall b2, and a third portion c3 connecting the first portion c1 and the second portion c2. The method of disconnecting the bridge 63 and the injection molded part 64 located on the inner surface of the bridge 63 on the inner side of the housing 60 includes:

[0242] S201, forming a first groove 64a1 on the inner surface of the injection molded part 64, such as Fig.15 and Fig.16 As shown, the third part of the bridge 63 and the injection molded part 64 arranged on the surface of the third part 63 are removed to disconnect the bridge 63. There are multiple bridges 63, and one first groove 63a1 is used to disconnect one bridge 63.

[0243] The first groove 64a1 includes a third side wall b3 and a fourth side wall b4 opposite to each other. The third side wall b3 is close to the first side wall b1, and the fourth side wall b4 is located between the third side wall b3 and the second side wall b2.

[0244] The other end of the first connection portion 63a1 is located on the third side wall b3, and the other end of the second connection portion 63a2 is located on the fourth side wall b4.

[0245] The other end of the first connection portion 63a1 is located on the third side wall b3, which means that the other end of the first connection portion 63a1 is exposed on the third side wall b3 and can be seen from the first side wall b1 by naked eyes. The other end of the second connection portion 63a2 is located on the fourth side wall b4 in the same way.

[0246] The first groove 64a1 is formed by removing a portion of the injection molded part 64. That is, in the process of preparing the housing 60, the injection molded part 64 is first filled into the first slit a1, and after the filling is completed, the first groove 64a1 is formed by removing a portion of the bridge 63 and the injection molded part 64 located on the surface of the bridge 63 according to the grounding requirements of the antenna 70, so as to disconnect the unnecessary bridge 63 and form the connecting portion 63a.

[0247] The shape of the first groove 64a1 is determined by the processing method, and the present application does not limit this. Exemplarily, the shape of the first groove 64a1 is a cuboid, a cylinder, an elliptical cylinder or a special-shaped cylinder.

[0248] The present application does not limit the number of the first grooves 64a1. For example, the number of the first grooves 64a1 is 1, 2, 3, 4, 5, 6 or more.

[0249] The setting of the first groove 64a1 allows, during the preparation process of the shell 60, the portion of the bridge 63 not used for grounding the antenna 70 to be disconnected after the injection molded part 64 is prepared, so that in the previous preparation step, the undisconnected bridge 63 can increase the structural strength of the shell 60 on both sides of the first slit a1 during the preparation process of the shell 60, thereby reducing the deformation of the shell 60 in the corresponding process.

[0250] In some embodiments, when the first groove 64a1 is formed on the inner surface of the injection molded part 64, the third portion c3 of the bridge 63 and the injection molded part 64 disposed on the surface of the third portion c3 can be removed by CNC machining, so that the first portion c1 and the second portion c2 of the bridge are disconnected, so that the bridge 63 is disconnected and the connecting portion 63a is formed. The first portion c1 forms the first connecting portion 63a1, and the second portion c2 forms the second connecting portion 63a2.

[0251] It is understandable that, in some other embodiments, drilling, laser engraving, etc. may be used to form the first groove 64 a 1 at a preset position of the injection molded part 64 to disconnect the bridge 63 .

[0252] The setting of the first groove 64a1 allows, during the preparation process of the shell 60, the portion of the bridge 63 not used for grounding the antenna 70 to be disconnected after the injection molded part 64 is prepared, so that in the previous preparation step, the bridge 63 that is not disconnected can connect the first side wall b1 and the second side wall b2 of the first slit a1 during the preparation process of the shell 60, thereby increasing the structural strength of the shell 60 and reducing the deformation of the shell 60 in the corresponding process.

[0253] In some other embodiments, the method of disconnecting a portion of the bridge 63 and the injection molded part 64 located on the inner surface of the bridge 63 on the inner side of the housing 60 further includes:

[0254] S202, forming the following on the inner surface of the injection molded part 64: Fig.17 The second groove 64a2 is shown to remove the bridge 63. There are multiple bridges 63, and one second groove 64a2 is used to remove one bridge 63.

[0255] The second groove 64a2 includes a fifth side wall b5 and a sixth side wall b6 that are opposite to each other. The fifth side wall b5 is coplanar with the first side wall b1, and the sixth side wall b6 is coplanar with the second side wall b2.

[0256] Therefore, in the preparation process of the housing 60, after the injection molded part 64 is prepared, a second groove 63a2 can be set on the inner surface of the injection molded part 64, so that the part of the bridge 63 that is not used for the grounding of the antenna 70 is completely removed, that is, it can ensure that the unbroken bridge 63 can be used to connect the first side wall b1 and the second side wall b2 of the first slit a1 in the previous preparation step of the housing 60 to enhance the structural strength of the housing 60, reduce the deformation of the housing 60 in the corresponding process, and increase the area of ​​the first slit a1 to increase the area of ​​the signal penetration area and improve the signal transmittance of the antenna 70. At this time, the width of the second groove 64a2 is equal to the width of the first slit a1.

[0257] The optional shape, number, and processing method of the second groove 64a2 are the same as those of the first groove 64a1, and will not be described again here.

[0258] It is understandable that in some other embodiments, the method of disconnecting the bridge 63 on the inner side of the shell 60 and the injection molded part 64 located on the inner surface of the bridge 63 may also include forming a first groove 64a1 and a second groove 64a2 on the inner surface of the injection molded part 64.

[0259] See also Fig.38 , Fig.38A flowchart of a method for preparing a housing 60 provided in some other embodiments of the present application, which is Fig.18 The difference between the manufacturing method of the housing 60 shown in the figure is that after executing step S16, after the injection molded part 64 is formed in the first slit a1 and the second slit a2, Fig.38 The method for preparing the housing 60 shown further includes:

[0260] S18, grinding the surface of the housing 60.

[0261] The present application does not limit the grinding method. Through grinding, surface defects such as marks and scratches formed on the surface of the shell 60 during the preparation process can be removed, and the smoothness and flatness of the surface of the shell 60 can be improved.

[0262] In some embodiments, the method of grinding the surface of the housing 60 includes:

[0263] S181, polishing the cape 64a formed by the injection molded part 64 and the outer surface of the shell 60, such as Fig.39 shown.

[0264] in, Fig.39 FIG. 6 is a schematic diagram of a local structure after a portion of the cloak 64a is removed from the outer surface of the shell 60. Fig.39 The cases with and without the cape 64a on the surface of the shell 60 are compared. It is understandable that in order to ensure the appearance of the shell 60, all the capes 64a on the outer surface of the shell 60 need to be removed during actual production.

[0265] S19, performing appearance treatment on the outer surface of the shell 60.

[0266] As a result, the outer surface of the housing 60 presents a different appearance effect.

[0267] The present application does not limit the method of appearance treatment. In some embodiments, a coating 67 can be provided on the outer surface of the housing 60 by spraying, PVD physical vapor deposition (PVD) or other methods. Fig.40 As shown, the outer surface of the housing 60 presents different appearance effects. Fig.40 FIG. 1 is a schematic diagram of a partial cross-sectional structure of a housing 60 obtained after executing step S19. In other embodiments, the surface layer of the metal substrate on the outer surface of the housing 60 may be changed by electroplating, anodizing, micro-arc oxidation, or other processes, that is, the surface layer of the metal substrate on the outer surface of the bottom plate 61 and the outer surface of the outer frame 62 may be changed, such as Fig.41 As shown, the housing 60 presents different appearance effects. Fig.41 is a schematic diagram of a partial cross-sectional structure of another housing 60 obtained after executing step S19, Fig.41 In the figure, the metal substrate surface layer of the outer surface of the bottom plate 61 and the outer surface of the outer frame 62 which have changed after the appearance treatment is indicated by hatching and reference numeral 67a.

[0268] The above is a description of the method for preparing the housing 60 including steps S10 to S20 provided in the embodiment of the present application and a combination thereof. It is understandable that in the actual preparation process, the method can be carried out according to actual needs while ensuring that the housing 60 includes steps S10 to S20. Fig.18 On the basis of the shell preparation method including steps S10, S11, and S16 shown, the remaining steps are combined according to the combination method in the above embodiments, and the technical effects of the steps described in the above embodiments are obtained accordingly.

[0269] For example, when using Fig.28 The shell preparation method including steps S10, S11, S12, S13 and S16 shown in FIG. Fig.33 The shell preparation method including steps S10, S11, S12, S13, S14 and S16 shown in the figure is combined to obtain a new preparation method including steps S10, S11, S12, S13, S14 and S16.

[0270] Similarly, when using Fig.38 The preparation method shown in FIG. 1 includes steps S10, S11, S16, S18, and S19. Fig.23 The shell preparation method shown includes steps S10, S11, S13 and S16, Fig.28 The shell preparation method shown includes steps S10, S11, S12, S13 and S16, Fig.33 The shell preparation method shown includes steps S10, S11, S12, S13, S14 and S16, Fig.34 The preparation method comprising steps S10, S11, S16 and S17, Fig.36 The preparation method comprising steps S10, S11, S15 and S16 is shown and Fig.37 The preparation method comprising steps S10, S11, S16 and S20 shown in the figure is combined to obtain a preparation method comprising steps S10, S11, S12, S13, S14, S15, S16, S17, S18, S19 and S20, as shown in the figure. Fig.42 As shown, Fig.42 A flow chart of a method for preparing the shell 60 provided in some other embodiments of the present application.

[0271] Among them, combined with the technical effects of the above embodiments, it can be obtained that in some embodiments, such as Fig.42As shown, when the preparation method includes both step S13 and step S15, step S15 should be performed before step S13, that is, the step of forming a step t between the outer surface of the base plate 61 and the outer surface of the bridge 63 should be performed before the step of surface treating the intermediate structure 200 to form a large number of micropores k1 on the side walls of the first slit a1 and the second slit a2.

[0272] In this way, the side walls of the first slit a1 and the side walls of the second slit a2 are completely exposed after the step t is formed and before the surface treatment, so that when the intermediate structure 200 is subjected to surface treatment in step S13 to form a large number of micropores k1 on the side walls of the first slit a1 and the second slit a2, all the side walls of the first slit a1 and the second slit a2 can be formed. Fig.24 The micropores k1 shown are used to increase the bonding force between the injection molded part 64 formed in the subsequent step S16 and the side walls of the first slit a1 and the second slit a2, thereby improving the strength of the housing 60.

[0273] For other combinations, refer to the above examples. Similarly, the execution methods included in each step of S10 to S20 can also be combined with each other, which will not be described in detail here.

[0274] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0275] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A housing, characterized in that: It comprises: an outer frame and a bottom plate, wherein the outer frame is arranged around the outer periphery of the bottom plate; The outer frame and the bottom plate are integrally formed by stamping, a first slit is provided on the bottom plate, a second slit is provided on the outer frame, the first slit and the second slit are connected, the first slit and the second slit are filled with injection molded parts, and the shell further includes: a bridge, the bridge is arranged in the injection molded part of the first slit, the first slit includes a first side wall and a second side wall opposite to each other, the first side wall is connected to the second side wall through the bridge, and the bridge is bent in a direction away from the outer surface of the bottom plate, wherein the outer surface of the bottom plate is located outside the shell.

2. The housing according to claim 1, characterized in that The shell also includes: a connecting part, which is arranged in the injection molded part in the first slit, and the connecting part includes: a first connecting part and a second connecting part, one end of the first connecting part is connected to the first side wall, and one end of the second connecting part is connected to the second side wall, and the first connecting part and the second connecting part are arranged at intervals.

3. The housing according to claim 2, characterized in that: A first groove is provided on the inner surface of the injection molded part, the first groove includes a third side wall and a fourth side wall opposite to each other, the third side wall is close to the first side wall, the fourth side wall is located between the third side wall and the second side wall, the other end of the first connecting part is located on the third side wall; the other end of the second connecting part is located on the fourth side wall; wherein the inner surface of the injection molded part is located on the inner side of the shell.

4. The housing according to any one of claims 1 to 3, characterized in that: A second groove is provided on the inner surface of the injection molded part, and the second groove includes a fifth side wall and a sixth side wall opposite to each other, the fifth side wall is coplanar with the first side wall, and the sixth side wall is coplanar with the second side wall; wherein the inner surface of the injection molded part is located on the inner side of the shell.

5. The housing according to any one of claims 1 to 4, characterized in that: An outer surface of the bottom plate and an outer surface of the bridge form a step, wherein the outer surface of the bridge is located outside the shell.

6. The housing according to any one of claims 1 to 5, characterized in that: The height of the step ranges from 0.3 mm to 0.96 mm.

7. The housing according to any one of claims 1 to 6, characterized in that: The height difference between the bottom of the outer surface of the bridge and the outer surface of the base plate is between 0.5 mm and 1.2 mm.

8. A method for preparing a shell, characterized in that: include: The metal sheet is subjected to stamping to form an intermediate structural member; wherein the intermediate structural member comprises: a bottom plate, an outer frame surrounding the bottom plate, a first slit is provided on the bottom plate, a second slit is provided on the outer frame, the first slit is connected to the second slit, a plurality of bridges are provided in the first slit, the first slit comprises a first side wall and a second side wall opposite to each other, and the first side wall is connected to the second side wall through the bridges; stamping the bridge so that the bridge bends in a direction away from the outer surface of the bottom plate; An injection molded part is formed in the first opening and the second opening to form the housing; wherein the injection molded part covers the bridge.

9. The method for preparing a shell according to claim 8, characterized in that: After forming the injection molded part in the first slit and the second slit, the method further comprises: Part of the bridge and the injection molded part located on the inner surface of the bridge are disconnected on the inner side of the shell, wherein the inner surface of the bridge is located on the inner side of the shell.

10. The method for preparing a housing according to claim 9, characterized in that: The bridge comprises: a first part connected to the first side wall, a second part connected to the second side wall, and a third part connecting the first part and the second part, and the bridge and the injection molded part located on the inner surface of the bridge are disconnected on the inner side of the shell, including: A first groove is formed on the inner surface of the injection molded part to remove the third part of the bridge and the injection molded part arranged on the surface of the third part to disconnect the bridge; wherein there are multiple bridges, and one first groove is used to disconnect one bridge.

11. The method for preparing a shell according to claim 9 or 10, characterized in that: The bridge is disconnected at the inner side of the housing and the injection molded part is located on the inner surface of the bridge, including: A second groove is formed on the inner surface of the injection molded part to remove the bridge; wherein there are multiple bridges, and one second groove is used to remove one bridge.

12. The method for preparing a housing according to any one of claims 8 to 11, characterized in that: Before forming the injection molded part in the first slit and the second slit, the method further comprises: The intermediate structure is subjected to surface treatment to form a large number of micropores on the side walls of the first slit and the side walls of the second slit.

13. The method for preparing a housing according to claim 12, characterized in that: Before performing surface treatment on the shell, the method further includes: A shielding layer is provided on the outer surface of the bottom plate and the outer surface of the outer frame.

14. The method for preparing a housing according to claim 13, characterized in that: The step of providing the shielding layer on the outer surface of the bottom plate and the outer surface of the outer frame comprises: Disposing the shielding layer on the surface of the intermediate structure; The side walls of the first slit, the side walls of the second slit and the shielding layer on the bridge surface are removed, and the shielding layer on the surface of the bottom plate and the outer frame is retained.

15. The method for preparing a housing according to any one of claims 12 to 14, characterized in that: The surface treatment of the intermediate structural member comprises: The intermediate structure is placed in a chemical solution for etching, so that the sidewalls of the first slit and the sidewalls of the second slit are in contact with the chemical solution, and a large number of micropores are formed on the sidewalls of the first slit and the sidewalls of the second slit.

16. The method for preparing a housing according to any one of claims 13 to 15, characterized in that: After the intermediate structural member is subjected to surface treatment, the method further comprises: The shielding layers on the surfaces of the bottom plate and the outer frame are removed.

17. The method for preparing a housing according to any one of claims 8 to 16, characterized in that: The intermediate structure also includes: a connecting material; the connecting material is connected to the outer frame, and after the injection molded parts are formed in the first slit and the second slit, the method further includes: The connecting material is removed.

18. The method for preparing a housing according to any one of claims 8 to 17, characterized in that: Before forming the injection molded part in the first slit and the second slit, the method further comprises: A step is formed between the outer surface of the bottom plate and the outer surface of the bridge; wherein the outer surface of the bridge is located outside the shell.

19. The method for preparing a housing according to any one of claims 8 to 18, characterized in that: After forming the injection molded part in the first slit and the second slit, the method further comprises: Grinding the surface of the shell; The outer surface of the shell is subjected to appearance treatment.

20. The method for preparing a housing according to claim 19, characterized in that: The step of grinding the surface of the shell comprises: The cape of the injection molded part and the outer surface of the shell are polished.

21. The method for preparing a housing according to any one of claims 8 to 20, characterized in that: The thickness of the metal sheet ranges from 0.6 mm to 1.2 mm.

22. An electronic device, characterized in that: include: A shell as described in any one of claims 1 to 7, or a shell prepared by the method for preparing a shell as described in any one of claims 8 to 21.

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