Housing, electronic device and method of manufacturing a housing

Abstract

The application provides a shell, an electronic device and a preparation method of the shell, and relates to the field of electronic devices. The shell comprises an outer frame and a bottom plate, the outer frame surrounds the outer periphery of the bottom plate; wherein the outer frame and the bottom plate are integrally formed by stamping, the bottom plate is provided with a first slit, the outer frame is provided with a second slit, the first slit and the second slit are communicated, the first slit and the second slit are filled with an injection molding part, and the shell further comprises a bridge, the bridge is arranged in the injection molding part of the first slit, the first slit comprises opposite first and second side walls, 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 on the outside of the shell. Therefore, the machining time of the CNC process using the numerical control machine tool in the shell preparation process can be reduced, and the production cost is reduced.

Description

Technical Field

[0001] This application relates to the field of electronic devices, and more particularly to a housing, an electronic device, and a method for manufacturing the housing. Background Technology

[0002] As consumers' demands for the appearance of electronic devices such as smartphones, tablets, and game consoles continue to rise, unibody metal casings are becoming increasingly popular. Because metal has high electromagnetic shielding properties, electronic products with communication functions, such as mobile phones, tablets, and game consoles, typically require slots in the metal casing to accommodate antenna designs, and then plastic is injected into these slots. Related technologies often employ CNC machining processes to process the casing before and after injection molding, which is time-consuming and costly. Summary of the Invention

[0003] This application provides a housing, an electronic device, and a method for manufacturing the housing, which can reduce the processing time of CNC machining on CNC machine tools during the housing manufacturing process and reduce production costs.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] In a first aspect, this application provides a housing, including: an outer frame and a base plate, the outer frame surrounding the outer periphery of the base plate; wherein the outer frame and the base plate are integrally formed by stamping, the base plate has a first slit, the outer frame has a second slit, the first slit and the second slit are connected, and the first slit and the second slit are filled with injection molded parts, the housing further including: a bridge, the bridge being disposed in the injection molded part of the first slit, the first slit including opposing first sidewalls and second sidewalls, the first sidewalls being connected by the bridge and the second sidewalls, the bridge bending in a direction away from the outer surface of the base plate, wherein the outer surface of the base plate is located outside the housing.

[0006] The housing can be used in electronic devices with antennas, such as mobile phones, tablets, and game consoles. This allows the base plate and outer frame of the housing to be integrally formed by stamping, reducing the machining time of CNC machining during the housing's production process, lowering manufacturing costs, and facilitating mass production. Simultaneously, the bridging feature serves two purposes: connecting the first and second sidewalls on either side of the first slit during manufacturing, increasing the structural strength of the housing, and also serving as antenna grounding. Furthermore, the bridging bends away from the outer surface of the base plate, resulting in a molded part of a certain thickness on the outer surface of the bridging, increasing the consistency of the molded part's appearance and improving its overall structural strength.

[0007] In one possible implementation of the first aspect, the housing further includes a connecting portion disposed in the injection molded part within the first slit. The connecting portion includes a first connecting portion and a second connecting portion, one end of the first connecting portion being connected to a first sidewall and one end of the second connecting portion being connected to a second sidewall. The first connecting portion and the second connecting portion are spaced apart.

[0008] In the shell fabrication process, the connecting parts are formed by disconnecting the bridging. That is, during shell fabrication, a bridging is first placed within the first slit to connect the first and second sidewalls on both sides of the first slit, increasing the overall strength of the shell during processing. Then, before the final shell is formed, unnecessary bridging can be disconnected to form connecting parts according to the antenna's grounding requirements, thereby increasing the area of ​​the signal penetration zone and improving the antenna's signal transmittance.

[0009] In one possible implementation of the first aspect, the housing further includes: a connecting portion disposed within 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 a first sidewall, and one end of the second connecting portion is connected to a second sidewall; the first connecting portion and the second connecting portion are spaced apart. A first groove is provided on the inner surface of the injection molded part; the first groove includes opposing third and fourth sidewalls; the third sidewall is close to the first sidewall, and the fourth sidewall is located between the third and second sidewalls; the other end of the first connecting portion is located on the third sidewall; the other end of the second connecting portion is located on the fourth sidewall; wherein the inner surface of the injection molded part is located inside the housing.

[0010] The first groove allows the portion of the bridge not used for antenna grounding to be disconnected after the injection-molded part is completed during the housing manufacturing process. This allows the unconnected bridge in the previous manufacturing steps to connect the first and second sidewalls of the first slit during the housing manufacturing process, increasing the structural strength of the housing and reducing the deformation of the housing in the corresponding process.

[0011] In one possible implementation of the first aspect, a second groove is provided on the inner surface of the injection molded part. The second groove includes opposing fifth and sixth sidewalls, the fifth sidewall being coplanar with the first sidewall and the sixth sidewall being coplanar with the second sidewall; wherein the inner surface of the injection molded part is located inside the housing. During the housing manufacturing process, the second groove is formed to remove bridging.

[0012] Therefore, during the manufacturing process of the housing, after the injection molding part is manufactured, a second groove can be provided on the inner surface of the injection molding part, so that the part of the bridge that is not used for antenna grounding is completely removed. This ensures that the bridge that was not broken in the previous manufacturing steps of the housing can be used to connect the first sidewall and the second sidewall of the first slit to enhance the structural strength of the housing, reduce the deformation of the housing 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 one possible implementation of the first aspect, the outer surface of the base plate and the outer surface of the bridge form a step, wherein the outer surface of the bridge is located outside the housing. The step arrangement ensures that the entire outer surface of the bridge is covered by the injection molded part, making the outer surface of the injection molded part a continuous surface when viewed from the outer surface of the housing, thereby increasing the overall strength of the injection molded part and improving the appearance of the housing.

[0014] In one possible implementation of the first aspect, the height of the step ranges from 0.3mm to 0.96mm. This ensures that the injection-molded part on the outer surface of the bridge has sufficient thickness to increase the overall strength of the injection-molded part and improve the appearance of the housing.

[0015] In one 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 base plate is between 0.4 mm and 1.2 mm. This ensures the thickness of the injection molded part located on the outer surface of the bridge, thereby increasing the overall structural strength of the injection molded part and improving the appearance of the housing.

[0016] Secondly, this application provides a method for manufacturing a shell, comprising: stamping a metal sheet to form an intermediate structural component; wherein the intermediate structural component includes: a base plate and an outer frame surrounding the base plate, the base plate having a first slit and the outer frame having a second slit, the first slit and the second slit communicating with each other, the first slit having a plurality of bridges, the first slit including opposing first and second sidewalls, the first sidewalls being connected by the bridges and the second sidewalls. The bridges are stamped to bend them away from the outer surface of the base plate. An injection molded part is formed within the first and second slits to form the shell; wherein the injection molded part covers the bridges.

[0017] The shell manufacturing method provided in the second aspect of this application integrally forms the base plate and outer frame by stamping a metal sheet. This reduces the processing time of CNC machining during shell manufacturing, lowers processing costs, and facilitates mass production of the shell. Simultaneously, the stamping process creates a bridge, which can be used during shell manufacturing to connect the first and second sidewalls on both sides of the first slot, increasing the structural strength of the shell and reducing deformation during subsequent manufacturing. The bridge can also be used for antenna grounding. Furthermore, the injection-molded part covers the bridge during manufacturing, increasing the uniformity of the injection-molded part's appearance and improving its overall structural strength.

[0018] In one possible implementation of the second aspect, after forming the injection-molded part within the first and second slits, the method further includes: disconnecting a portion of the bridging and the injection-molded part located on the inner surface of the bridging on the inner side of the housing, wherein the inner surface of the bridging is located on the inner side of the housing. This allows the bridging to connect the two sides of the first slit during the preceding fabrication process to increase the structural strength of the housing, and also allows the unnecessary bridging to be disconnected after the housing is formed according to the antenna's grounding requirements, thereby increasing the area of ​​the signal penetration zone and further ensuring the antenna's propagation strength.

[0019] In one possible implementation of the second aspect, the bridging includes: a first portion connected to a first sidewall, a second portion connected to a second sidewall, and a third portion connecting the first and second portions. The bridging is partially disconnected inside the housing, and an injection-molded part is located on the inner surface of the bridging. This includes forming a first groove on the inner surface of the injection-molded part to remove the third portion of the bridging and the injection-molded part disposed on the surface of the third portion, thereby disconnecting the bridging. The bridging is multiplied, and one first groove is used to disconnect one bridging. The first groove allows the portion of the bridging not used for antenna grounding to be disconnected after the injection-molded part is completed during the housing fabrication process. This allows the undisconnected bridging in the preceding fabrication steps to connect the first and second sidewalls of the first slit during housing fabrication, increasing the structural strength of the housing and reducing deformation of the housing in the corresponding process.

[0020] In one possible implementation of the second aspect, the bridging portion and the injection-molded part located on the inner surface of the bridging portion are disconnected on the inner side of the housing, comprising: forming a second groove on the inner surface of the injection-molded part to remove the bridging; wherein there are multiple bridging portions, and one second groove is used to remove one bridging portion. Thus, during the housing manufacturing process, after the injection-molded part is manufactured, a second groove can be provided on the inner surface of the injection-molded part, so that the portion of the bridging not used for antenna grounding is completely removed. This ensures that the unbroken bridging portion can be used in the preceding housing manufacturing steps to connect the first and second sidewalls of the first slit to enhance the structural strength of the housing, reduce housing deformation 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 one possible implementation of the second aspect, before forming the injection molded part within the first and second slits, the method further includes: surface treating the intermediate structural member to form a large number of micropores on the first slit and its sidewalls. In this way, during the formation of the injection molded part within the first and second slits, the injection molded part fills the pores, resulting in a better structural connection between the injection molded part and the sidewalls of the first and second slits, enhancing the bonding force between the injection molded part and the sidewalls of the first and second slits, and improving the structural strength of the shell.

[0022] In one possible implementation of the second aspect, before surface treatment of the shell, the method further includes: setting a shielding layer on the outer surface of the base plate and the outer surface of the outer frame. Due to fluctuations in the manufacturing process and mold processing tolerances, when the injection molded part is formed in the first and second slits, the injection molded part overflows from the first and second slits, forming a tarpaulin on the surface of the base plate and the outer frame. Simultaneously, because micropores are formed in the base plate and outer frame during surface treatment of the intermediate structural components before forming the injection molded part in the first and second slits, the injection molded part in the tarpaulin area becomes embedded in the micropores, resulting in a strong bond between the tarpaulin and the shell surface. This makes it difficult to remove by grinding and requires CNC machining to remove the tarpaulin.

[0023] Therefore, by setting a shielding layer on the outer surfaces of the base plate and the outer frame, micropores will not form on the outer surfaces of the base plate and the outer frame during surface treatment of the intermediate structural components, thus reducing the bonding force between the outer surfaces of the base plate and the outer frame and the injection molded part. In other words, the reduced bonding force between the outer surfaces of the base plate and the outer frame and the burr eliminates the need for CNC machining; the burr can be removed simply by grinding, reducing the machining time of CNC machining and lowering the manufacturing cost of the shell.

[0024] In one possible implementation of the second aspect, providing a masking layer on the outer surface of the base plate and the outer surface of the outer frame includes: providing a masking layer on the surface of the intermediate structural member. The masking layer is removed from the sidewalls of the first slit, the sidewalls of the second slit, and the bridging surface, leaving the masking layer on the surfaces of the base plate and the outer frame. This ensures that the masking layer is formed only on the surfaces of the base plate and the outer frame, preventing the masking layer from splashing or being mistakenly applied to the sidewalls of the first and second slits and the bridging surface, which could affect the bonding force between the injection molded part and the sidewalls of the first and second slits in subsequent steps, thereby improving the accuracy of the masking layer application.

[0025] In one possible implementation of the second aspect, the method for removing the masking layer from the sidewalls of the first and second slits and the bridging surface includes removing the masking layer from the sidewalls of the first slit, the sidewalls of the second slit, and the bridging surface by CNC machining on a CNC machine tool. This improves machining accuracy.

[0026] In one possible implementation of the second aspect, surface treatment of the intermediate structural component includes: immersing the intermediate structural component in a chemical solution for etching, causing the sidewalls of the first and second slits to come into contact with the chemical solution, thereby forming numerous micropores on the sidewalls of the first and second slits. This process is simple.

[0027] For example, the chemical solution is an acidic solution, designed to etch numerous micropores k1 into the sidewalls of the first and second slits. It is understood that, considering the material properties of the metal sheet used to prepare the shell, in other examples the chemical solution could be of other properties, as long as it can etch numerous micropores into the sidewalls of the first and second slits.

[0028] In one possible implementation of the second aspect, when an acidic solution is used to surface-treat the intermediate structural component to form micropores, the material of the shielding layer is a material that is not corroded by the acid, such as polymer ink.

[0029] In one possible implementation of the second aspect, after surface treatment of the intermediate structural component, the method further includes removing the masking layer from the surfaces of the base plate and the outer frame. Removing the masking layer from the surfaces of the base plate and the outer frame after surface treatment of the intermediate structural component allows the outer surface of the injection molded part formed in subsequent steps to be flush with the outer surfaces of the base plate and the outer frame, improving the consistency of the housing's appearance.

[0030] In one possible implementation of the second aspect, the method for removing the masking layer from the surfaces of the base plate and the outer frame includes immersing the housing in a chemical reagent to remove the masking layer from the surfaces of the base plate and the outer frame. The chemical reagent is a material that can dissolve the masking layer and does not react with the metal. For example, when the material of the masking layer is a polymer ink, the material of the chemical reagent includes an organic solvent.

[0031] In this way, the step of removing the masking layer from the base plate and outer frame surface can be completed on the same production line as the step of surface treatment of intermediate structural components, simply by changing the corresponding solution, thus simplifying the preparation process.

[0032] In one possible implementation of the second aspect, the intermediate structural component further includes a connecting material; after the connecting material is connected to the outer frame and the injection molded part is formed within the first and second slits, the method further includes removing the connecting material. This allows the connecting material to be reserved during the stamping process of the metal sheet. The connecting material can be used for auxiliary positioning during subsequent shell fabrication. Simultaneously, the connecting material increases the overall connection strength of the intermediate structural component during shell fabrication after the metal sheet has been stamped, preventing deformation that may occur during subsequent production. Furthermore, the connecting material ensures that the intermediate structural component is connected as a whole during shell fabrication, resulting in a consistent overall product effect in subsequent steps and ultimately improving the finished product quality of the shell.

[0033] In one possible implementation of the second aspect, before forming the injection molded part within the first and second slits, the method further includes: forming a step between the outer surface of the base plate and the outer surface of the bridge; wherein the outer surface of the bridge is located outside the housing. This ensures that the entire outer surface of the bridge is covered by the injection molded part, making the outer surface of the injection molded part a continuous surface when viewed from the outer surface of the housing, increasing the overall strength of the injection molded part and improving the appearance of the housing.

[0034] In one possible implementation of the second aspect, the method of forming a step between the outer surface of the base plate and the bridge includes: forming the step between the outer surface of the bridge and the base plate by CNC machining. This improves the machining accuracy of the step. Simultaneously, when removing the masking layer from the sidewalls of the first and second slits and the bridge surface using CNC machining, the process of forming the step between the outer surface of the bridge and the base plate while simultaneously removing the masking layer from the sidewalls of the first and second slits and the bridge surface is simplified.

[0035] In one possible implementation of the second aspect, after the injection-molded part is formed within the first and second slits, the method further includes: grinding the surface of the housing. This involves performing an appearance treatment on the outer surface of the housing. Grinding removes surface defects such as marks and scratches formed during the manufacturing process, improving the smoothness of the housing surface, and the appearance treatment allows for different aesthetic effects on the outer surface of the housing.

[0036] In one possible implementation of the second aspect, the surface of the housing is polished, including polishing the burr of the injection molded part and the outer surface of the housing, thereby improving the smoothness and flatness of the housing surface.

[0037] In one possible implementation of the second aspect, the thickness of the metal sheet ranges from 0.6 mm to 1.2 mm. This reduces the amount of raw materials used and lowers costs while ensuring the strength of the casing.

[0038] Thirdly, this application provides an electronic device including the housing provided in either the first or second aspect.

[0039] Since the electronic device provided in the embodiments of this application includes the housing of any technical solution of the first aspect, or the housing prepared by any housing preparation method of the second aspect, the electronic device of the third aspect can solve the same technical problem corresponding to any technical solution of the first aspect and the second aspect, and achieve the same technical effect, which will not be elaborated here. Attached Figure Description

[0040] Figure 1 Perspective views of electronic devices provided in some embodiments of this application;

[0041] Figure 2 for Figure 1 An exploded view of the electronic device shown;

[0042] Figure 3 This is a schematic diagram of the structure of a shell as seen from its outer surface.

[0043] Figure 4 for Figure 3 A schematic diagram of the shell structure as seen from its inner surface;

[0044] Figure 5 This is a process flow diagram of a method for preparing a shell;

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

[0046] Figure 7 for Figure 6 A magnified view of the intermediate structural component in region A;

[0047] Figure 8 This is a partial structural diagram of the shell obtained after performing step S2;

[0048] Figure 9 Schematic diagrams of the housing structure provided for some embodiments of this application;

[0049] Figure 10 for Figure 9 The diagram shown is a structural schematic of the remaining part of the shell after the injection-molded part has been removed, viewed from another angle.

[0050] Figure 11 for Figure 10A partially enlarged schematic diagram of region B within the provided shell;

[0051] Figure 12 This is a schematic diagram of a partial cross-sectional structure of the housing provided in some embodiments of this application;

[0052] Figure 13 Schematic diagram of partial cross-sectional structure of the housing provided in other embodiments of this application;

[0053] Figure 14 This is a partial structural diagram of the housing after the injection-molded part has been removed, provided in some embodiments of this application;

[0054] Figure 15 for Figure 9 A partially enlarged schematic diagram of region C within the provided shell;

[0055] Figure 16 A partial cross-sectional structural diagram of the housing provided for some embodiments of this application;

[0056] Figure 17 A partial cross-sectional structural diagram of the housing provided in some embodiments of this application;

[0057] Figure 18 A flowchart illustrating a method for preparing a shell according to some embodiments of this application;

[0058] Figure 19 To execute Figure 18 A schematic diagram of an intermediate structural component 200 obtained after step S10;

[0059] Figure 20 for Figure 19 A partially enlarged schematic diagram of region D in the intermediate structural component shown;

[0060] Figure 21 To execute Figure 18 A partial structural diagram of an intermediate structural component obtained after step S11;

[0061] Figure 22 To execute Figure 18 A partial structural diagram of the shell obtained after step S16;

[0062] Figure 23 Flowcharts illustrating methods for preparing the shell as provided in other embodiments of this application;

[0063] Figure 24 To execute Figure 23 A partial structural diagram of the intermediate structural component obtained after step S13;

[0064] Figure 25 To execute Figure 18A partial structural diagram of the shell obtained after step S16;

[0065] Figure 26 This is a schematic diagram of a partial cross-sectional structure of an intermediate structural component obtained after performing step S131.

[0066] Figure 27 For use Figure 26 The intermediate structural components shown are executed Figure 18 A schematic diagram of a partial cross-sectional structure of the shell obtained after step S16;

[0067] Figure 28 A flowchart illustrating a method for preparing a shell according to some embodiments of this application;

[0068] Figure 29 A partial cross-sectional structural diagram of another intermediate structural component obtained after performing steps S12 and S13;

[0069] Figure 30 This is a partial structural diagram of the intermediate structural component obtained after performing step S121.

[0070] Figure 31 This is a schematic diagram of a partial cross-sectional structure of the intermediate structural component obtained after performing step S121.

[0071] Figure 32 This is a schematic diagram of a partial cross-sectional structure of the intermediate structural component obtained after performing step S122.

[0072] Figure 33 A flowchart illustrating a method for preparing a shell according to further embodiments of this application;

[0073] Figure 34 A flowchart illustrating a method for preparing a shell according to other embodiments of this application;

[0074] Figure 35 To execute Figure 18 A schematic diagram of another intermediate structural component formed in step S10;

[0075] Figure 36 A flowchart illustrating a method for preparing a shell according to other embodiments of this application;

[0076] Figure 37 A flowchart illustrating a method for preparing a shell according to other embodiments of this application;

[0077] Figure 38 A flowchart illustrating a method for preparing a shell according to other embodiments of this application;

[0078] Figure 39A partial structural diagram of the outer surface of the shell after removing part of the drapery;

[0079] Figure 40 This is a schematic diagram of a partial cross-sectional structure of a shell obtained after performing step S19;

[0080] Figure 41 This is a schematic diagram of a partial cross-sectional structure of another type of shell obtained after performing step S19.

[0081] Figure 42 A flowchart illustrating a method for preparing a shell according to other embodiments of this application. Detailed Implementation

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

[0083] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" 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 embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0085] In the description of embodiments of this application, the terms "coplanar," "perpendicular," "parallel," and "equal" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "coplanar" means approximately coplanar with an allowable error range, which may be an angular deviation of 5°, 10°, or 15° relative to absolute coplanarity, or a step difference of no more than 0.05 mm, 0.1 mm, 0.2 mm, 0.5 mm, or 1 mm relative to absolute coplanarity. "Parallel" includes absolute parallelism and approximately parallelism, wherein the acceptable deviation range for approximately parallelism may be, for example, an angular deviation of 5°, 8°, or 10°. "Perpendicular" includes absolute perpendicularity and approximately perpendicularity, wherein the acceptable deviation range for approximately perpendicularity may also be, for example, a deviation of 5°, 8°, or 10°. "Equal" includes absolute equality and approximate equality, where the acceptable deviation range for approximate equality is, for example, the difference between the two equals is less than or equal to 5% of either one.

[0086] This application provides an electronic device, which is a type of electronic device with communication functions. Exemplarily, the electronic device can be a portable electronic device or other types of electronic devices. For example, the electronic device can be a mobile phone, tablet personal computer, laptop computer, personal digital assistant (PDA), camera, personal computer, laptop computer, wearable device, game console, walkie-talkie, etc. For ease of explanation, the following description uses a mobile phone as an example.

[0087] Please see Figure 1 , Figure 2 , Figure 1 A perspective view of an electronic device 100 provided in some embodiments of this application; Figure 2 for Figure 1 The diagram shows an exploded view of the electronic device 100. 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 board 20, a main circuit board 30, a secondary circuit board 40, a battery 50, and a casing 60, etc.

[0088] It should be noted that, Figure 1 , Figure 2 and Figure 3The accompanying drawings below only schematically illustrate some components included in the electronic device 100; the actual shape, size, location, and construction of these components are not subject to change. Figure 1 , Figure 2 and Figure 3 And the limitations of the figures below.

[0089] The display module 10 is used to display images, videos, etc. The display module 10 includes a light-transmitting cover 11 and a display screen 12. The light-transmitting cover 11 is stacked and fixedly connected to the display screen 12. In some examples, the light-transmitting cover 11 is used to protect the display screen 12 and prevent dust. The material of the light-transmitting cover 11 includes, but is not limited to, glass. For example, the light-transmitting cover 11 can be a common light-transmitting cover 11, used to protect the display screen 12 from damage caused by external impacts and to provide dust protection. Alternatively, a light-transmitting cover 11 with touch functionality can be used to enable the electronic device 100 to have touch functionality, making it more convenient for users. Therefore, this application does not specifically limit the material of the light-transmitting cover 11.

[0090] The display screen 12 can be a flexible display screen or a rigid display screen. For example, the display screen 12 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MLED) 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 serves as the structural "skeleton" of the electronic device 100, and the main circuit board 30, the secondary circuit board 40, the battery 50, etc., can be fixed on the middle plate 20. Of course, it is understood that the electronic device 100 may also not include the middle plate 20.

[0092] The main circuit board 30 is used to integrate the control chip. The main circuit board 30 is fixed to the middle plate 20. Exemplarily, the main circuit board 30 can be fixed to the middle plate 20 by means of threaded connection, snap-fit, soldering, etc.

[0093] The control chip can be, for example, an application processor (AP), double data rate synchronous dynamic random access memory (DDR), or 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 rigid circuit board, a flexible circuit board, or a rigid-flex circuit board. The main circuit board 30 can use an FR-4 dielectric substrate, a Rogers dielectric substrate, or a hybrid dielectric substrate of FR-4 and Rogers, etc. Here, FR-4 is a designation for a flame-retardant material grade, and the Rogers dielectric substrate is a high-frequency board.

[0095] The secondary circuit board 40 is used to integrate electronic components such as the RF front-end of an antenna (e.g., a 5G antenna), a universal serial bus (USB) device, and an oscillator. The secondary circuit board 40 can be fixed to the surface of the middle plate 20. For example, the secondary circuit board 40 can be fixed to the surface of the middle plate 20 by means of threaded connection, snap-fit, adhesive bonding, or welding.

[0096] Similarly, the secondary circuit board 40 can be a rigid circuit board, a flexible circuit board, or a rigid-flex circuit board. The secondary circuit board 40 can use an FR-4 dielectric board, a Rogers dielectric board, a hybrid dielectric board of FR-4 and Rogers, etc.

[0097] The battery 50 provides power to the main circuit board 30, the sub-circuit board 40, and the display module 10. In some embodiments, the middle plate 20 has a mounting groove 20a on the surface opposite to the display module 10, and the battery 50 is installed in the mounting groove 20a.

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

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

[0100] The base plate 61 is located on the side of the display screen 12 away from the light-transmitting cover plate 11, and is stacked on top of the light-transmitting cover plate 11 and the display screen 12. The materials of the base plate 61 include, but are not limited to, ceramic, glass, metal, and plastic. This application uses metal as an example to illustrate the material of the base plate 61.

[0101] The outer frame 62 is located between the base plate 61 and the light-transmitting cover plate 11. The light-transmitting cover plate 11 is fixed to the outer frame 62 so that the light-transmitting cover plate 11, the base plate 61 and the outer frame 62 form an internal accommodating space for the electronic device 100, in which electronic components such as the main circuit board 30, the sub-circuit board 40 and the battery 50 are all housed.

[0102] The outer frame 62 is fixed to the base plate 61. Exemplarily, the outer frame 62 can be fixedly connected to the base plate 61 by means of adhesive, threaded connection, welding, snap-fit, etc. The outer frame 62 and the base plate 61 can also be integrally formed, that is, the outer frame 62 and the base plate 61 are a single structural component. This application uses the example of the outer frame 62 and the base plate 61 being integrally formed as an illustration.

[0103] The materials of the outer frame 62 include, but are not limited to, ceramics, glass, metal, and plastic. This application uses metal as an example to illustrate the use of the outer frame 62 as an example. That is, in the embodiments below, both the outer frame 62 and the base plate 61 are metal and are integrally formed.

[0104] Please continue reading. Figure 2The 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 navigation functions and 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 Bluetooth functions. The cellular antenna can be used to implement voice communication functions. The cellular antenna can cover the 2G, 3G, 4G, 5G, Long Term Evolution (LTE) bands, the Civil Broadband Radio Service (CBRS) band, and the 5G New Radio (NR) band.

[0105] Antenna 70 is used to support the wireless communication function of electronic device 100. In some embodiments, antenna 70 may be disposed on the middle plate 40 of electronic device 100, such as... Figure 2 As shown. In 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 housing 60 is a metal housing, a signal penetration area needs to be opened on the metal housing so that the antenna signal can pass through the housing 60 through the signal penetration area to meet the communication performance of the antenna 70.

[0107] For ease of description of the embodiments below, the surface of each component in the housing 60 facing the aforementioned accommodating space is now defined as the inner surface, and the surface of each component in the housing 60 away from the aforementioned 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 each other in a direction perpendicular to its thickness.

[0108] Please see Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the structure of a shell 60 as seen from its outer surface. Figure 4 for Figure 3The provided housing 60 is shown as a structural schematic diagram from its inner surface. The housing 60 also includes a first slit a1 and a second slit a2 for signal penetration of the antenna 70.

[0109] The base plate 61 has a first slit a1 that penetrates both its outer and inner surfaces; the outer frame 62 has a second slit a2 that penetrates both its outer and inner surfaces. The first slit a1 and the second slit a2 are filled with injection-molded parts 64. Thus, the first slit a1, the second slit a2, and the injection-molded parts 64 therein form a signal penetration area for receiving and transmitting antenna signals.

[0110] In some embodiments, in order to simultaneously provide grounding for the antenna 70, the housing 60 further includes a bridge 63. The bridge 63 is disposed within the first slot a1 and connects the 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 base plate 61 and the outer frame 62.

[0111] In preparation such as Figure 3 and Figure 4 In the process of constructing the housing 60 shown, the entire metal profile is first machined using Computer Numerical Control (CNC) to form the outer frame 62, base plate 61, first slit a1, second slit a2, and bridging structures in the housing 60. Next, injection-molded parts are filled into the first slit a1 and second slit a2, ensuring a tight connection between the injection-molded parts and the first slit a1 and second slit a2 to guarantee the overall structural strength of the housing 60.

[0112] CNC machining is a machining method in which digital control program instructions are input into a numerical control system, compiled and calculated by a computer, and transmitted to a drive motor via a displacement control system to cut and machine the designed parts. Generally, machine tools that utilize computer control are commonly referred to as CNC.

[0113] Please see Figure 5 , Figure 5 This is a process flow diagram of a method for preparing a shell 60. Figure 5 The preparation method provided in this embodiment can prepare a shell 60 having the aforementioned signal penetration region. The preparation method specifically includes:

[0114] S1. The metal block is machined using a CNC machine tool to form an intermediate structural component 200. The intermediate structural component 200 includes an outer frame 62, a base plate 61, a first slit a1, and a second slit a2, as shown below. Figure 6 and Figure 7 As shown, Figure 6 This is a schematic diagram illustrating the process of executing step S1. Figure 7 for Figure 6 A magnified view of the intermediate structural component 200 in region A.

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

[0116] The materials of the metal blocks include aluminum, aluminum alloy, magnesium alloy, aluminum-magnesium alloy, lithium-magnesium alloy, steel, titanium alloy, copper alloy, etc. This application uses aluminum alloy as an example to illustrate the material of the intermediate structural component 200.

[0117] S2. An injection molded part 64 is formed in the first slit a1 and the second slit a2 to form a shell 60.

[0118] Please see Figure 8 , Figure 8 This is a partial structural diagram of the shell 60 obtained after performing step S2.

[0119] S3. Perform surface treatment on the housing 60 to achieve the corresponding appearance effect, so as to obtain... Figure 3 The housing 60 shown.

[0120] In use Figure 5 Prepared by the method shown Figure 3 When processing the metal shell 60 shown, CNC machining is used throughout the metal material forming process. Specifically, the base plate 61, outer frame 62, first slit a1, and second slit a2 are all formed from a single piece of metal using CNC machining. This process is time-consuming, costly, and not conducive to mass production. Furthermore, to compensate for material loss during manufacturing and ensure sufficient raw materials, the metal block's volume is larger than the finished shell, resulting in a larger material consumption and higher production costs.

[0121] Therefore, this application provides a housing 60, please refer to... Figure 9 and Figure 10 , Figure 9 This is a schematic diagram of the structure of the housing 60 provided in some embodiments of this application. Figure 10 for Figure 9 The diagram shows a structural schematic of the remaining portion of the housing 60 after removing the injection-molded part 64, viewed from another angle. The housing 60 includes a base plate 61 and an outer frame 62. The outer frame 62 surrounds the outer periphery of the base plate 61, and the base plate 61 and outer frame 62 are integrally formed by stamping. Processing the metal material by stamping allows the base plate 61 and outer frame 62 to be integrally formed, reducing the processing time of CNC machining and thus lowering production costs.

[0122] In some embodiments, the amount of raw materials used in the preparation of the housing 60 is reduced and the production cost is lowered by stamping the metal sheet to form the base plate 61 and the outer frame 62.

[0123] The thickness and size of the metal sheet are selected according to the size requirements of the finished housing. 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 base plate 61 and the outer frame 62 are integrally formed by stamping metal sheets, the thickness of the base plate 61 and the thickness of the outer frame 62 are equal, and the thickness of the base plate 61 and the thickness of the outer frame 62 are also in the range of 0.6mm to 1.2mm.

[0125] This application does not limit the material of the metal sheet. For example, the material of the metal sheet may be aluminum, aluminum alloy, magnesium alloy, magnesium-aluminum alloy, lithium alloy, lithium-magnesium alloy, or titanium alloy, etc.

[0126] The base plate 61 has a first slit a1. The first slit a1 penetrates both the outer and inner surfaces of the base plate 61. This application does not limit the number of first slits a1; for example, the number of 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 both the outer and inner surfaces of the outer frame 62. This application does not limit the number of first slits; for example, the number of second slits a2 is designed according to the radiation requirements of the antenna 70.

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

[0129] This application does not limit the material of the injection molded part 64. For example, 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, the injection molded part 64 can be integrally formed when filled into the first slit a1 and the second slit a2, simplifying the process.

[0131] In some embodiments, the two ends of the first slit a1 are connected to the ends of the second slit a2, such as... Figure 10 As shown in the middle region X1, the two ends of a first slit a1 are respectively connected to the ends of two second slits a2.

[0132] In other embodiments, the first slit a1 is connected to the end of the second slit a2 through a position between the two ends of the first slit a1, such as... Figure 10As shown in region X2, the midpoint between the two ends of a first slit a1 is connected to the ends of multiple second slits a2, and a portion of the first slit a1 is connected to the end of a second slit a2, presenting as follows. Figure 11 The "T" shape shown, in which, Figure 11 for Figure 10 A partially enlarged schematic diagram of region B in the provided housing 60.

[0133] Please continue reading. Figure 11 The first slit a1 includes a first sidewall b1 and a second sidewall b2.

[0134] The housing 60 also includes a bridge 63. The bridge 63 is disposed in the injection molded part 64 of the first slit a1, and the first sidewall b1 of the first slit a1 is connected to the second sidewall b2 through the bridge 63.

[0135] In some embodiments, the number of bridges is reserved according to the design requirements of antenna 70. This 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 bridging 63 bends in a direction away from the outer surface of the base plate 61, such as Figure 11 As shown, the outer surface of the base plate 61 is located on the outside of the housing 60.

[0137] In this way, the base plate 61 and the outer frame 62 in the housing 60 are integrally formed by stamping, reducing the processing time of CNC machining during the manufacturing process of the housing 60, lowering processing costs, and facilitating mass production of the housing 60. Simultaneously, the bridging 63 can be used to connect the first sidewalls b1 and the second sidewalls b2 on both sides of the first slit a1 during manufacturing, increasing the structural strength of the housing 60 and preventing deformation during subsequent manufacturing. It can also be used for grounding the antenna 70. Furthermore, the bridging 63 bends away from the outer surface of the base plate 61, resulting in a molded part 64 of a certain thickness on the outer surface of the bridging 63. This increases the uniformity of the appearance of the molded part 64 and improves its overall structural strength.

[0138] There is a certain height difference between the bottom of the outer surface of the bridge 63 and the outer surface of the base plate 61 to ensure the thickness of the injection molded part 64 located on the outer surface of the bridge 63, thereby increasing the overall structural strength of the injection molded part 64. Please refer to... Figure 12 , Figure 12 This is a partial cross-sectional structural diagram of the housing 60 provided in some embodiments of this application. The height difference between the bottom of the outer surface of the bridge 63 and the outer surface of the base plate 61 is the first height h1.

[0139] In some embodiments, the first height h1 is at least 0.5 mm and at most the thickness of the base plate 61. Since the base plate 61 is formed from a metal sheet by stamping, the maximum thickness of the base plate 61 is the same as the maximum thickness of the metal sheet, which is also 1.2 mm. Therefore, the range of the first height h1 is between 0.4 mm and 1.2 mm. Exemplarily, the height difference between the bottom of the outer surface of the bridge 63 and the outer surface of the base plate 61, the first height h1, 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 base plate 61 can be achieved by stamping. For example, the bridge 63 can be stamped in the same process as the base plate 61 and the outer frame 62, resulting in a height difference of a first height h1 between the bottom of the outer surface of the bridge 63 and the outer surface of the base plate 61. This simplifies the manufacturing method of the housing 60.

[0141] Understandably, in other examples, after stamping the base plate 61 and the outer frame 62, the prototype of the bridge 63 can be partially stamped to make the outer surface of the bridge 63 bend away from the outer surface of the base plate 61, forming a height difference of a first height h1 between the bottom of the outer surface of the bridge 63 and the outer surface of the base plate 61. This segmented stamping 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 base plate 61 can also be achieved by CNC machining or cold heading.

[0143] Please see Figure 13 , Figure 13 This is a partial cross-sectional structural diagram of the housing 60 provided in some other embodiments of this application. The outer surface of the base plate 61 and the outer surface of the bridge 63 form a step t. The outer surface of the bridge 63 is located on the outer side of the housing 60.

[0144] A step t is formed by recessing from the outer surface of the base plate 61 to the outer surface of the bridge 63. The height of the step t is the second height h2. 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 0.3 mm, and the maximum height of the second height h2 is 80% of the thickness of the base plate 61. Similarly, when the maximum thickness of the base 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 0.3 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.

[0145] In this way, the step t is set so that the entire outer surface of the bridge 63 is covered by the injection molded part 64, making the outer surface of the injection molded part 64 a continuous surface when viewed from the outer surface of the housing 60, which increases the overall strength of the injection molded part 64 and improves the appearance of the housing 60.

[0146] In some embodiments, please refer to Figure 14 , Figure 14 This is a partial structural diagram of the housing 60 after removing the injection-molded part 64, provided in some embodiments of this application. 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 sidewall b1, one end of the second part c2 is connected to the second sidewall b2, and the first part c1 and the second part c2 are connected by 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 with 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 connecting part 63a1 is connected to the first side wall b1, and one end of the second connecting part 63a2 is connected to the second side wall b2. The first connecting part 63a1 and the second connecting part 63a2 are spaced apart.

[0149] During the fabrication of the housing 60, the connecting portion 63a is formed after the bridge 63 is disconnected. That is, during the fabrication of the housing 60, a bridge 63 is first provided within the first slit a1 to connect the first sidewalls b1 and b2 on both sides of the first slit a1, thereby increasing the overall strength of the housing 60 during processing. Subsequently, before the final housing 60 is formed, the unnecessary bridge 63 can be disconnected according to the grounding requirements of the antenna 70, forming the connecting portion 63a 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 housing 60, before the bridge is disconnected, the first connecting part 63a1 of the connecting part 63a shown in the figure is the first part c1 of the bridge 63, and the second connecting part 63a2 of the connecting part 63a is the second part c2 of the bridge 63.

[0151] In some embodiments, please refer to Figure 15 , Figure 15 for Figure 9 A partially enlarged schematic diagram of region C in the provided housing 60. 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 inside the housing 60.

[0152] Please see Figure 16 , Figure 16This is a partial cross-sectional structural diagram of the housing 60 provided in some embodiments of this application. The first groove 64a1 includes a third sidewall b3 and a fourth sidewall b4 opposite to each other. The third sidewall b3 is close to the first sidewall b1, and the fourth sidewall b4 is located between the third sidewall b3 and the second sidewall b2.

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

[0154] The other end of the first connecting part 63a1 is located on the third side wall b3, meaning that the other end of the first connecting part 63a1 is exposed on the third side wall b3 and can be seen with the naked eye from the first side wall b1. The other end of the second connecting part 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, during the fabrication of the housing 60, the injection-molded part 64 is first filled into the first slot a1. After filling, according to the grounding requirements of the antenna 70, 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, thereby disconnecting the unnecessary bridge 63 and forming the connecting portion 63a.

[0156] The shape of the first groove 64a1 is determined by the processing method, and this application does not limit it. For example, the shape of the first groove 64a1 is a cuboid, a cylinder, an elliptical cylinder, or an irregular cylinder.

[0157] This application does not limit the processing method of the first groove 64a1. In some embodiments, the first groove 64a1 can be milled at a preset position on the injection molded part 64 to break the bridge 63 by CNC machining.

[0158] It is understood that in some other embodiments, drilling, laser engraving, or other methods can also be used to form a first groove 64a1 at a preset position on the injection molded part 64 to break the bridge 63.

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

[0160] The first groove 64a1 is provided so that, during the preparation of the housing 60, the part of the bridge 63 that is not used for grounding the antenna 70 can be disconnected after the injection molding part 64 is prepared. This allows the bridge 63 that was not disconnected in the previous preparation steps to connect the first sidewall b1 and the second sidewall b2 of the first slit a1 during the preparation of the housing 60, thereby increasing the structural strength of the housing 60 and reducing the deformation of the housing 60 in the corresponding process.

[0161] In other embodiments, please refer to Figure 17 , Figure 17 This is a partial cross-sectional structural diagram of the housing 60 provided in some embodiments of this application, showing a second groove 64a2 on the inner surface of the injection molded part 64.

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

[0163] In the process of preparing the shell 60, the bridging 63 is removed by forming a second groove 64a2.

[0164] Therefore, during the fabrication of the housing 60, after the injection-molded part 64 is completed, a second groove 63a2 can be provided on the inner surface of the injection-molded part 64. This completely removes the portion of the bridge 63 that is not used for grounding the antenna 70. This ensures that the bridge 63, which was not broken in the previous fabrication steps of the housing 60, can be used to connect the first sidewall b1 and the second sidewall b2 of the first slit a1 to enhance the structural strength of the housing 60, reduce 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 zone 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 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 is understood that in some other embodiments, the inner surface of the injection molded part 64 may be provided with both a first groove 64a1 and a second groove 64a2.

[0167] The above describes the structure of the shell 60 provided in the embodiments of this application. The following describes the preparation method of the shell 60 provided in the embodiments of this application.

[0168] Please see Figure 18 , Figure 18 A flowchart illustrating a method for preparing the shell 60 according to some embodiments of this application, the steps of which include:

[0169] S10. The metal sheet is stamped to form an intermediate structural component 200, such as... Figure 19 As shown.

[0170] Figure 19 To execute Figure 18 A schematic diagram of an intermediate structural component 200 obtained after step S10. The intermediate structural component 200 includes a base plate 61 and an outer frame 62 surrounding the base plate 61. The outer frame 62 extends in a direction away from the outer surface of the base plate 61.

[0171] A first slit a1 is provided on the base plate 61. The first slit a1 penetrates both the outer and inner surfaces of the base plate 61. The number of first slits a1 is not limited in this application; for example, the number of first slits a1 is designed according to the radiation requirements of the antenna 70.

[0172] Please see Figure 20 , Figure 20 for Figure 19 A partially enlarged schematic diagram of region D in the intermediate structural member 200 shown. The first slit a1 includes a first sidewall b1 and a second sidewall b2.

[0173] The first opening a1 is provided with multiple bridges 63, and the first side wall b1 of the first opening a1 is connected to the second side wall b2 through the bridges 63.

[0174] The outer frame 62 is provided with a second slit a2, which penetrates both the outer and inner surfaces of the outer frame 62. This application does not limit the number of first slits; for example, the number of 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, the injection molded part 64 can be integrally formed when filled into the first slit a1 and the second slit a2, simplifying the process.

[0176] This application does not limit the material of the metal sheet. For example, the material of the metal sheet may be aluminum alloy, magnesium alloy, magnesium-aluminum alloy, or titanium alloy, etc.

[0177] The metal sheet is thin, thereby reducing the amount of raw materials used and lowering 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 base plate 61 and the outer frame 62 are stamped from the same metal sheet, and the base plate 61 and the outer frame 62 have the same thickness. This allows the intermediate structural component 200 to be integrally formed using only one metal sheet through stamping, simplifying the manufacturing process.

[0179] The base plate 61, outer frame 62, first slit a1, and second slit a2 are all integrally formed from metal sheet 1 by stamping. Please refer to the following section. Figure 19 and Figure 20 The outer surface of the bridge 63 is coplanar with the outer surface of the base plate 61.

[0180] S11. Stamp the bridge 63 to make it bend away from the outer surface of the base plate 61, such as... Figure 21 As shown, Figure 21 To execute Figure 18 A partial structural diagram of an intermediate structural component 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 base 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 base plate 61 is a first height h1, such as... Figure 12 As shown. The minimum first height h1 is 0.5 mm, and the maximum first height h1 is the thickness of the base plate 61. Since the base plate 61 is formed by stamping a metal sheet, the maximum thickness of the base plate 61 is the same as the maximum thickness of the metal sheet, which is also 1.2 mm. Therefore, the range of the first height h1 is between 0.5 mm and 1.2 mm. For example, the depth range of the bridge 63 bending away from the outer surface of the base plate 61, specifically 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.

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

[0184] S16. Form the injection molded part 64 within the first slit a1 and the second slit a2 to form Figure 9 The housing 60 is shown. The injection-molded part covers the bridge 63. Please refer to the comparison. Figure 21 and Figure 22 , Figure 22 To execute Figure 18 A partial structural diagram of the shell 60 obtained after step S16.

[0185] This application does not limit the material of the injection molded part 64, as long as the signal from the antenna 70 can penetrate the injection molded part 64. For example, the material of the injection molded part 64 is plastic.

[0186] In this way, by stamping the metal sheet, the base plate 61 and the outer frame 62 are integrally formed, reducing the processing time of CNC machining during the housing 60 manufacturing process, lowering processing costs, and facilitating the mass production of the housing 60. Simultaneously, the stamping process forms the bridge 63, which can be used during housing 60 manufacturing to connect the first sidewalls b1 and the second sidewalls b2 on both sides of the first slot a1, increasing the structural strength of the housing 60 and reducing deformation during subsequent manufacturing. The bridge 63 can also be used for grounding the antenna 70. Furthermore, by covering the bridge 63 with the injection molded part 64 during manufacturing, the uniformity of the injection molded part 64's appearance is increased, and the overall structural strength of the injection molded part 64 is improved.

[0187] To increase the bonding force between the injection molded part 64 and the sidewalls of the first slit a1 and the second slit a2, and to improve the overall structural strength of the housing 60, please refer to [link to relevant documentation]. Figure 23 , Figure 23 A flowchart illustrating a method for preparing the shell 60 provided in other embodiments of this application, which is consistent with... Figure 18 The difference in the method for preparing the housing 60 is that, before performing step S16, i.e. before forming the injection molded part 64 within the first slit a1 and the second slit a2, the method for preparing the housing 60 further includes:

[0188] S13. Surface treatment is performed on the intermediate structural component 200, forming a large number of micropores k1 on the sidewalls of the first slit a1 and the second slit a2. For example... Figure 24 As shown, Figure 24 To execute Figure 23 A partial structural diagram of the intermediate structural component 200 obtained after step S13. Figure 24 The distribution area of ​​micropore k1 is illustrated in the figure.

[0189] In some embodiments, the method for surface treatment of the intermediate structural member 200 includes:

[0190] S131. The intermediate structural component 200 is immersed in a chemical solution for corrosion, so that the sidewalls of the first slit a1 and the second slit a2 come into contact with the chemical solution, forming a corrosion barrier on the sidewalls of the first slit a1 and the second slit a2. Figure 24 The diagram shows a large number of micropores k1. This simplifies the process.

[0191] In some embodiments, the chemical solution is an acidic solution to etch a large number of micropores k1 into the sidewalls of the first slit a1 and the second slit a2. It is understood that, considering the material properties of the metal sheet used to prepare the shell 60, in other embodiments, the chemical solution may also be a solution of other properties, as long as it can etch a large number of micropores k1 into the sidewalls 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 not communicating with 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 fills into the micropore k1, so that the injection molded part 64 forms a better structural connection with the side wall of the first slit a1 and the side wall of the second slit a2, which enhances the bonding force between the injection molded part 64 and the side wall of the first slit a1 and the side wall of the second slit a2, and improves 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 penetrates the micropores k1 located on the surface of the intermediate structural member 200, so that the injection molded part 64 and the intermediate structural member 200 have a strong bonding force, thereby improving the overall structural strength of the shell 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, forming a burr 64a at the connection between the first slit a1 and the surface of the base plate 61 and the connection between the second slit a2 and the surface of the outer frame 62. Figure 25 As shown, Figure 25 To execute Figure 18 A partial structural diagram of the shell 60 obtained after step S16.

[0196] Simultaneously, during step 13, the intermediate structural member undergoes surface treatment to form [the structure] on the sidewalls of the first slot a1 and the second slot a2. Figure 24 When a large number of micropores k1 are shown, the aforementioned micropores k1 can easily be formed on the surface of the outer frame 62 on the surface of the base plate 61 as well.

[0197] For example, when step 131 is performed, in which the intermediate structural member 200 is immersed in a chemical solution for etching to form a large number of micropores k1 on the sidewalls of the first slit a1 and the second slit a2, it is easy for the surfaces of the base plate 61 and the outer frame 62 to also come into contact with the chemical solution and form the aforementioned micropores k2 on the surfaces of the base plate 61 and the outer frame 62. Figure 26 As shown, Figure 26 This is a schematic diagram of a partial cross-sectional structure of an intermediate structural component 200 obtained after performing step S131.

[0198] This application does not limit the shape of the micropore k1; for example, such as... Figure 26 As shown, micropore k1 is an irregularly shaped blind pore.

[0199] This results in the injection-molded part 64 in the cloak 64a being embedded in the micropores k1, giving the cloak 64a a strong bond with the surface of the shell 60, such as... Figure 27 As shown, Figure 27 For use Figure 26 The intermediate structural component 200 shown is executed. Figure 18 A schematic diagram of a partial cross-sectional structure of the shell 60 obtained after step S16. Plastic particles from the burr 64a penetrate into the micropores k1 on the surface of the base plate 61 and the outer frame 62, making the burr 64a difficult to remove by grinding. Therefore, to ensure the appearance of the finished shell 60, the burr 64a on the surface of the outer frame 62 located on the surface of the base plate 61 needs to be removed by CNC machining during the surface treatment of the shell 60, so that the outer surface of the shell 60 is smooth. This increases the processing time of the CNC machining process and increases the manufacturing cost of the shell 60.

[0200] Therefore, please refer to Figure 28 , Figure 28 A flowchart illustrating a method for preparing the shell 60 according to further embodiments of this application, which is consistent with... Figure 23 The difference in the preparation method of the provided housing 60 is that, before surface treatment of the intermediate structural member 200 in step S13, the preparation method of the housing 60 further includes:

[0201] S12. A shielding layer 65 is formed on the outer surface of the base plate 61 and the outer surface of the outer frame 62.

[0202] like Figure 29 As shown, Figure 29 To illustrate a partial cross-sectional structure of another intermediate structural member 200 obtained after steps S12 and S13, the shielding layer 65 ensures that when the intermediate structural member 200 covered by the shielding layer 65 undergoes surface treatment in step S13, micropores k1 will not form on the surfaces of the base plate 61 and the outer frame 62. Specifically, after the shielding layer 65 is formed on the surfaces of the base plate 61 and the outer frame 62, micropores k1 are formed only on the sidewalls of the first slit a1 and the second slit a2.

[0203] It should be noted that, Figure 29 The diagram only shows the cross-section of the intermediate structural members 200 on both sides of the first slit a1. Numerous micropores k1 are formed on the first sidewall b1 and the second sidewall b2 of the first slit a1. The second slit a2 has a similar sidewall form to the first slit a1, both having two parallel and opposing sidewalls. Therefore, in the preceding and subsequent embodiments, when it is necessary to show the cross-section of the structures on both sides of the first slit a1 and the second slit a2, the first slit a1 is used as the representative.

[0204] This application does not limit the material of the shielding layer 65, as long as it ensures that no micropores k1 are generated in the area of ​​the intermediate structural member 200 covered by the shielding layer 65 when the intermediate structural member 200 is surface treated in step S13. In some embodiments, when an acidic solution is used to form the aforementioned micropores k1, the material of the shielding layer is a material that is not corroded by acid, such as polymer ink.

[0205] This application does not limit the formation method of the shielding layer 65. In some implementations, methods such as coating, spraying, pad printing, and screen printing can be used to form the shielding layer 65 on the surface of the base plate 61 and the outer frame 62.

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

[0207] S121. A shielding layer 65 is provided on the surface of the intermediate structural member 200. For example... Figure 30 and Figure 31 As shown, Figure 30 This is a partial structural diagram of the intermediate structural component 200 obtained after performing step S121. Figure 31 This is a schematic diagram of a partial cross-sectional structure of the intermediate structural member 200 obtained after performing step S121.

[0208] S122, Remove the shielding layer 65 from the sidewalls of the first slot a1, the sidewalls of the second slot a2, and the surface of the bridging 63, retaining the shielding layer 65 on the surfaces of the base plate 61 and the outer frame 62. Figure 32 As shown, Figure 32 This is a schematic diagram of a partial cross-sectional structure of the intermediate structural member 200 obtained after performing step S122.

[0209] In some embodiments, the method for removing the shielding layer 65 from the sidewalls of the first slit a1 and the second slit a2 and the surface of the bridging 63 in step S122 includes:

[0210] S1221. The masking layer 65 on the surface of the first slit a1, the second slit a2, and the bridging layer 63 is removed by CNC machining on a CNC machine tool. This improves machining accuracy.

[0211] It is understood that, in other embodiments, the shielding layer 65 on the sidewalls of the first slit a1, the second slit a2, and the surface of the bridging 63 can also be removed by local grinding or local application of a dissolving solution, thus not being limited by processing equipment.

[0212] By providing a shielding layer 65 on the outer surface of the base plate 61 and the outer surface of the outer frame 62, micropores k1 will not form on the surfaces of the base plate 61 and the outer frame 62 during surface treatment of the intermediate structural component 200 in step S13, thereby reducing the bonding force between the surfaces of the base plate 61 and the outer frame 62 and the injection molded part 64. In other words, the bonding force between the surfaces of the base plate 61 and the outer frame 62 and the injection molded part 64 is reduced. Figure 25 and Figure 27 The bonding force between the cloaks 64a shown is reduced, and the cloaks 64a can be removed by grinding without the need for CNC machining. This reduces the processing time of CNC machining and lowers the manufacturing cost of the shell 60.

[0213] Meanwhile, by forming a shielding layer 65 on the surface of the base plate 61 and the surface of the outer frame 62 through the above two steps S121 and S122, it can be ensured that the shielding layer 65 is formed only on the surface of the base plate 61 and the surface of the outer frame 62, avoiding the shielding layer 65 from splashing or being mistakenly placed on the side walls of the first slit a1 and the second slit a2 and the surface of the bridging 63, which would 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 shielding layer 65 setting.

[0214] Please see Figure 33 , Figure 33 The flowchart below shows a method for preparing a housing 60 according to some embodiments of this application. When using the method for preparing a housing 60 that includes step S12, forming a shielding layer 65 on the surfaces of the base plate 61 and the outer frame 62, Figure 33 The preparation method shown is the same as Figure 28 The difference in the preparation methods shown is that, after performing step S13 and surface treating the intermediate structural component 200, the preparation method of the shell 60 further includes:

[0215] S14. Remove the masking layer from the surfaces of the base plate 61 and the outer frame 62.

[0216] After surface treatment of the intermediate structural component 200, the masking layer on the surface of the base 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 base plate 61 and the outer frame 62, thereby improving the consistency of the appearance of the housing 60.

[0217] In some embodiments, the method of removing the shielding layer 65 from the surfaces of the base plate 61 and the outer frame 62 includes:

[0218] S141. Immerse the housing 60 in a chemical reagent to remove the shielding layer 65 from the surfaces of the base plate 61 and the outer frame 62.

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

[0220] In this way, step S14, which removes the shielding layer 65 from the surfaces of the base plate 61 and the outer frame 62, can be completed on the same production line as step S13, which performs surface treatment on the intermediate structural component 200. Only the corresponding solution needs to be changed, simplifying the preparation process.

[0221] It is understood that, in some other embodiments, the method for removing the shielding layer 65 from the surfaces of the base plate 61 and the outer frame 62 also includes:

[0222] S142. Use mechanical grinding or abrasion to remove the masking layer 65 from the surfaces of the base plate 61 and the outer frame 62.

[0223] like Figure 34 As shown, Figure 34 A flowchart illustrating the preparation method of the shell 60 provided in other embodiments of this application, which is consistent with... Figure 18 The difference in the preparation method of the shell 60 shown is that... Figure 34 The intermediate structural member 200 formed in step S10 of the shell preparation method shown further includes: a connecting material 66, such as... Figure 35 As shown, Figure 35 To execute Figure 18 A schematic diagram of another intermediate structural component 200 formed in step S10. The connecting material 66 is connected to the outer frame 62.

[0224] In some embodiments, the connecting material 66 is provided with a plurality of positioning holes 66a. When the intermediate structural component 200 obtained after performing step S10 is subsequently processed, the positioning holes 66a can be used to position the intermediate structural component 200 and 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, Figure 34 The method for preparing the shell 60 shown also includes:

[0226] S17, Remove 66 continuous material.

[0227] Among them, the connecting material 66 is connected to the side end face of the outer frame 62 that is away from the outer surface of the base plate 61.

[0228] This application does not limit the method of removing the connecting material 66. For example, the connecting material 66 can be removed by CNC machining on a CNC machine tool.

[0229] In this way, a connecting piece 66 can be reserved during the stamping process of the metal sheet in step S10. The connecting piece 66 can be used for auxiliary positioning during the subsequent preparation of the shell 60. At the same time, the connecting piece 66 can increase the overall connection strength of the intermediate structural component 200 during the preparation of the shell 60 after step S10, avoiding deformation that may occur during subsequent production. In addition, the connecting piece 66 can also ensure that the intermediate structural component 200 is connected as a whole during the preparation of the shell 60, so that the overall effect of the product obtained in each subsequent step is consistent, ultimately improving the finished product effect of the shell 60.

[0230] Please see Figure 36 , Figure 36 A flowchart illustrating a method for preparing the shell 60 according to other embodiments of this application, which is consistent with... Figure 18 The difference in the preparation method of the housing 60 shown is that, after performing step S16 and before forming the injection molded part 64 in the first slit a1 and the second slit a2, the preparation method of the housing 60 further includes:

[0231] S15, A structure is formed between the outer surface of the base plate 61 and the outer surface of the bridging 63. Figure 13 The step t shown.

[0232] The outer surface of the bridge 63 is located on the outside of the housing 60. For example... Figure 13 As shown, step t is formed by recessing from the outer surface of base plate 61 to the outer surface of bridge 63. The height of step t is a 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 base plate 61. Similarly, when the maximum thickness of base plate 61 is the same as the maximum thickness of 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 the outer surface of the injection molded part 64 is a continuous surface when viewed from the outer surface of the housing 60, which increases the overall strength of the injection molded part 64 and improves the appearance of the housing 60.

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

[0235] S151, A step t is formed between the outer surfaces of the bridge 63 and the base plate 61 by CNC machining on a CNC machine tool.

[0236] This improves the machining accuracy of the step t. Furthermore, 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 outer surfaces of the bridge 63 and the base plate 61 by CNC machining on a CNC machine tool. Simultaneously, the sidewalls of the first slit a1 and the second slit a2, and the masking layer 65 on the surface of the bridge 63, can be removed, thus simplifying the process.

[0237] Please see Figure 37 , Figure 37 A flowchart illustrating a method for preparing the shell 60 according to other embodiments of this application, which is consistent with... Figure 18 The difference in the preparation method of the shell 60 shown is that after step S16 is performed, and the injection molded part 64 is formed in the first slit a1 and the second slit a2, Figure 37 The method for preparing the shell 60 shown also includes:

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

[0239] In this way, the bridge 63 can be used to connect the two sides of the first slit a1 during the previous preparation process to increase the structural strength of the housing 60, and the unnecessary bridge 63 can be disconnected after the housing 60 is formed according to the grounding requirements of the antenna 70, 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 required to provide grounding for the antenna 70, all bridges 63 and the injection molded part 64 located on the inner surface of the bridge 63 can be disconnected in step S20.

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

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

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

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

[0245] The other end of the first connecting part 63a1 is located on the third side wall b3, meaning that the other end of the first connecting part 63a1 is exposed on the third side wall b3 and can be seen with the naked eye from the first side wall b1. The other end of the second connecting part 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, during the fabrication of the housing 60, the injection-molded part 64 is first filled into the first slot a1. After filling, according to the grounding requirements of the antenna 70, 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, thereby disconnecting the unnecessary bridge 63 and forming the connecting portion 63a.

[0247] The shape of the first groove 64a1 is determined by the processing method, and this application does not limit it. For example, the shape of the first groove 64a1 is a cuboid, a cylinder, an elliptical cylinder, or an irregular cylinder.

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

[0249] The first groove 64a1 is provided so that, during the preparation of the housing 60, the part of the bridge 63 that is not used for grounding the antenna 70 can be disconnected after the injection molding part 64 is prepared. This allows the undisconnected bridge 63 in the previous preparation steps to increase the structural strength of the housing 60 on both sides of the first slit a1 during the preparation of the housing 60, and to reduce the deformation of the housing 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 on a CNC machine tool, so that the first portion c1 and the second portion c2 of the bridge are disconnected, thereby disconnecting the bridge 63 and forming a connecting portion 63a. The first portion c1 forms the first connecting portion 63a1, and the second portion c2 forms the second connecting portion 63a2.

[0251] It is understood that in some other embodiments, drilling, laser engraving, or other methods may also be used to form a first groove 64a1 at a preset position on the injection molded part 64 to break the bridge 63.

[0252] The first groove 64a1 is provided so that, during the preparation of the housing 60, the part of the bridge 63 that is not used for grounding the antenna 70 can be disconnected after the injection molding part 64 is prepared. This allows the bridge 63 that was not disconnected in the previous preparation steps to connect the first sidewall b1 and the second sidewall b2 of the first slit a1 during the preparation of the housing 60, thereby increasing the structural strength of the housing 60 and reducing the deformation of the housing 60 in the corresponding process.

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

[0254] S202, Forming a shape on the inner surface of the injection molded part 64 as shown in the image. Figure 17 The second groove 64a2 shown is used 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 sidewall b5 and a sixth sidewall b6, which are opposite to each other. The fifth sidewall b5 is coplanar with the first sidewall b1, and the sixth sidewall b6 is coplanar with the second sidewall b2.

[0256] Therefore, during the fabrication of the housing 60, after the injection-molded part 64 is completed, a second groove 63a2 can be provided on the inner surface of the injection-molded part 64. This completely removes the portion of the bridge 63 that is not used for grounding the antenna 70. This ensures that the unbroken bridge 63 can be used in the preceding fabrication steps of the housing 60 to connect the first sidewall b1 and the second sidewall b2 of the first slit a1, thereby enhancing the structural strength of the housing 60, reducing deformation of the housing 60 in the corresponding process, and increasing the area of ​​the first slit a1 to increase the area of ​​the signal penetration zone 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 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 understood that, in some other embodiments, the method of disconnecting the portion of the bridge 63 on the inside of the housing 60 and the injection molded part 64 located on the inner surface of the bridge 63 may simultaneously include forming a first groove 64a1 and a second groove 64a2 on the inner surface of the injection molded part 64.

[0259] Please see Figure 38 , Figure 38A flowchart illustrating a method for preparing the shell 60 provided in other embodiments of this application, which is consistent with... Figure 18 The difference in the preparation method of the shell 60 shown is that after step S16 is performed, and the injection molded part 64 is formed in the first slit a1 and the second slit a2, Figure 38 The method for preparing the shell 60 shown also includes:

[0260] S18. Polish the surface of the housing 60.

[0261] This application does not limit the polishing method. Polishing can remove surface defects such as imprints and scratches formed on the surface of the housing 60 during the manufacturing process, thereby improving the smoothness and flatness of the housing 60 surface.

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

[0263] S181, Grinding the outer surfaces of the burr 64a formed by the injection molded part 64 and the housing 60, such as Figure 39 As shown.

[0264] in, Figure 39 A partial structural diagram of the outer surface of the shell 60 after removing part of the burr 64a. Figure 39 A comparison was made between cases where the shell 60 has a burr 64a and cases where it does not. Understandably, to ensure the appearance of the shell 60, all burrs 64a on the outer surface of the shell 60 need to be removed during actual production.

[0265] S19. Perform surface treatment on the outer surface of the housing 60.

[0266] This results in the outer surface of the housing 60 exhibiting different appearance effects.

[0267] This application does not limit the methods used for appearance treatment. In some embodiments, a coating 67 can be formed on the outer surface of the housing 60 by methods such as spraying or PVD physical vapor deposition, for example... Figure 40 As shown, this gives the outer surface of the housing 60 different appearance effects. Among them, Figure 40 This is a schematic diagram of a partial cross-sectional structure of the housing 60 obtained after performing step S19. In other embodiments, processes such as electroplating, anodizing, and micro-arc oxidation can also be used to change the surface layer of the metal substrate on the outer surface of the housing 60, thus changing the surface layer of the metal substrate on the outer surface of the base plate 61 and the outer surface of the outer frame 62, such as... Figure 41 As shown, this allows the housing 60 to present different appearances. Among them, Figure 41 This is a schematic diagram of a partial cross-sectional structure of another type of shell 60 obtained after performing step S19. Figure 41 The metal substrate surface of the base plate 61 and the outer surface of the outer frame 62, which have changed after the appearance treatment, is shown in the diagram using shading and reference numeral 67a.

[0268] The above describes the preparation method of the shell 60, including steps S10 to S20, provided in the embodiments of this application, and a corresponding combination thereof. It is understood that in the actual preparation process, the method can be adjusted according to actual needs, ensuring the inclusion of… Figure 18 Based on the shell preparation method including steps S10, S11, and S16 shown, the remaining steps are combined according to the combination methods in the above embodiments, and the technical effects of each step described in the above embodiments are obtained accordingly.

[0269] For example, when using Figure 28 The shell preparation method shown, which includes steps S10, S11, S12, S13, and S16, can be used in conjunction with... Figure 33 The shell preparation methods shown, including steps S10, S11, S12, S13, S14 and S16, are combined to obtain a new preparation method including steps S10, S11, S12, S13, S14 and S16.

[0270] Similarly, when using Figure 38 When the preparation method shown includes steps S10, S11, S16, S18, and S19, it can be compared with... Figure 23 The shell preparation method shown includes steps S10, S11, S13, and S16. Figure 28 The shell preparation method shown includes steps S10, S11, S12, S13, and S16. Figure 33 The shell preparation method shown includes steps S10, S11, S12, S13, S14, and S16. Figure 34 The preparation method shown includes steps S10, S11, S16, and S17. Figure 36 The preparation method shown includes steps S10, S11, S15, and S16, and Figure 37 The preparation methods shown, including steps S10, S11, S16, and S20, are combined to obtain a preparation method including steps S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, and S20, as follows. Figure 42 As shown, Figure 42 A flowchart illustrating a method for preparing the shell 60 provided in other embodiments of this application.

[0271] In combination with the technical effects of the embodiments described above, it can be seen that in some embodiments, such as Figure 42As shown, when the preparation method includes both steps S13 and S15, step S15, which 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 treatment of the intermediate structural member 200 to form a large number of micropores k1 on the sidewalls of the first slit a1 and the second slit a2.

[0272] In this way, the sidewalls of the first slit a1 and the second slit a2 are completely exposed after the step t is formed and before surface treatment. This ensures that when step S13 is performed to surface treat the intermediate structural member 200 to form a large number of micropores k1 on the sidewalls of the first slit a1 and the second slit a2, all sidewalls of the first slit a1 and the second slit a2 can be formed. Figure 24 The micropores k1 shown increase the bonding force between the injection molded part 64 formed in the subsequent step S16 and the sidewalls of the first slit a1 and the second slit a2, thereby improving the strength of the shell 60.

[0273] Other combination methods are illustrated in the examples above. Similarly, the execution methods included in each step of S10 to S20 can also be combined with each other, which will not be elaborated here.

[0274] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in 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 this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A housing, characterized in that, Includes: an outer frame and a base plate, wherein the outer frame surrounds the outer periphery of the base plate; The outer frame and the base plate are integrally formed by stamping. The base plate has a first slit, and the outer frame has a second slit. The first slit and the second slit are connected. The first slit and the second slit are filled with injection molded parts. The housing also includes a bridge, which is disposed in the injection molded part of the first slit. The first slit includes a first sidewall and a second sidewall that are opposite to each other. The first sidewall is connected to the second sidewall through the bridge. The bridge is bent in a direction away from the outer surface of the base plate. The outer surface of the base plate is located on the outside of the housing. The housing further includes a connecting portion, which is disposed in the injection molded part within the first slit. The connecting portion includes a first connecting portion and a second connecting portion, one end of the first connecting portion being connected to the first sidewall and one end of the second connecting portion being connected to the second sidewall. The first connecting portion and the second connecting portion are spaced apart. The inner surface of the injection molded part is provided with a first groove, the first groove including a third sidewall and a fourth sidewall opposite to each other, the third sidewall being close to the first sidewall, the fourth sidewall being located between the third sidewall and the second sidewall, the other end of the first connecting part being located on the third sidewall; the other end of the second connecting part being located on the fourth sidewall; wherein, the inner surface of the injection molded part is located inside the housing.

2. The housing according to claim 1, characterized in that, The inner surface of the injection molded part is provided with a second groove, the second groove including a fifth sidewall and a sixth sidewall opposite to each other, the fifth sidewall being coplanar with the first sidewall and the sixth sidewall being coplanar with the second sidewall; wherein, the inner surface of the injection molded part is located inside the housing.

3. The housing according to claim 1 or 2, characterized in that, The outer surface of the base plate and the outer surface of the bridge form a step, wherein the outer surface of the bridge is located outside the shell.

4. The housing according to claim 3, characterized in that, The height of the step is between 0.3mm and 0.96mm.

5. The housing according to claim 1 or 2, 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 0.5mm and 1.2mm.

6. A method for preparing a shell, characterized in that, include: The metal sheet is stamped to form an intermediate structural component; wherein, the intermediate structural component includes: a base plate and an outer frame surrounding the base plate, the base plate is provided with a first slit, the outer frame is provided with a second slit, the first slit and the second slit are connected, the first slit is provided with a plurality of bridges, the first slit includes a first sidewall and a second sidewall opposite to each other, and the first sidewall is connected to the second sidewall through the bridges. The bridge is stamped, causing it to bend away from the outer surface of the base plate; An injection molded part is formed within the first slit and the second slit to form the housing; wherein the injection molded part covers the bridge; The bridge and the injection molded part located on the inner surface of the bridge are disconnected on the inner side of the housing to form a first groove on the inner surface of the injection molded part. The first groove is used to remove a portion of the bridge and the injection molded part on the bridge surface to disconnect the bridge and form a connection. One first groove is used to form one connection. The connecting portion includes a first connecting portion and a second connecting portion. The first groove includes a third sidewall and a fourth sidewall opposite to each other. One end of the first connecting portion is connected to the first sidewall, and the other end of the first connecting portion is located on the third sidewall. One end of the second connecting portion is connected to the second sidewall, and the other end of the second connecting portion is located on the fourth sidewall. The first connecting portion and the second connecting portion are spaced apart.

7. The method for preparing the shell according to claim 6, characterized in that, The bridging includes: a first portion connected to the first sidewall, a second portion connected to the second sidewall, and a third portion connecting the first portion and the second portion. The bridging portion disconnected on the inner side of the housing and the injection-molded part located on the inner surface of the bridging include: A first groove is formed on the inner surface of the injection molded part to remove the third portion of the bridge and the injection molded part disposed on the surface of the third portion, thereby breaking the bridge; wherein there are multiple bridges, and one first groove is used to break one bridge.

8. The method for preparing the shell according to claim 6 or 7, characterized in that, The bridging portion disconnected on the inner side of the housing and the injection-molded part located on the inner surface of the bridging include: A second groove is formed on the inner surface of the injection molded part to remove the bridging; wherein there are multiple bridgings, and one second groove is used to remove one bridging.

9. The method for preparing the shell according to claim 6 or 7, characterized in that, Before forming the injection molded part within the first slit and the second slit, the method further includes: The intermediate structural component is surface treated to form a large number of micropores on the sidewalls of the first and second slits.

10. The method for preparing the shell according to claim 9, characterized in that, Before surface treatment of the housing, the method further includes: A shielding layer is provided on the outer surface of the base plate and the outer surface of the outer frame.

11. The method for preparing the shell according to claim 10, characterized in that, The provision of the shielding layer on the outer surface of the base plate and the outer surface of the outer frame includes: The shielding layer is provided on the surface of the intermediate structural member; Remove the shielding layer from the sidewalls of the first slit, the sidewalls of the second slit, and the bridging surface, while retaining the shielding layer on the surfaces of the base plate and the outer frame.

12. The method for preparing the shell according to claim 9, characterized in that, The surface treatment of the intermediate structural component includes: The intermediate structural component is immersed in a chemical solution for corrosion, so that the sidewalls of the first and second slits come into contact with the chemical solution, forming a large number of micropores on the sidewalls of the first and second slits.

13. The method for preparing the shell according to claim 10, characterized in that, After surface treatment of the intermediate structural component, the method further includes: Remove the masking layer from the surface of the base plate and the outer frame.

14. The method for preparing the shell according to claim 6 or 7, characterized in that, The intermediate structural component 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: Remove the connecting material.

15. The method for preparing the shell according to claim 6 or 7, characterized in that, Before forming the injection molded part within the first slit and the second slit, the method further includes: A step is formed between the outer surface of the base plate and the outer surface of the bridge; wherein the outer surface of the bridge is located outside the housing.

16. The method for preparing the shell according to claim 6 or 7, characterized in that, After forming the injection molded part within the first slit and the second slit, the method further includes: The surface of the housing is polished; The outer surface of the housing is subjected to surface treatment.

17. The method for preparing the shell according to claim 16, characterized in that, The polishing of the surface of the housing includes: Polish the tarpaulin of the injection molded part and the outer surface of the housing; wherein, during injection molding, the injection molded part overflows from the first slit and the second slit, and the tarpaulin of the injection molded part is formed at the junction of the first slit and the surface of the base plate and the junction of the second slit and the surface of the outer frame.

18. The method for preparing the shell according to claim 6 or 7, characterized in that, The thickness of the metal sheet ranges from 0.6 mm to 1.2 mm.

19. An electronic device, characterized in that, include: The housing as described in any one of claims 1-5, or the housing prepared by the method of preparing the housing as described in any one of claims 6-18.

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