CN107683040A - Shell manufacturing method, shell and mobile terminal - Google Patents

Abstract

The invention provides a shell manufacturing method, a shell and a mobile terminal, wherein the shell manufacturing method comprises the following steps: providing a housing base body, wherein the housing base body is provided with a first surface, a second surface arranged opposite to the first surface, an inner cavity extending from the first surface to the second surface, and an antenna slot penetrating from the second surface to the inner cavity; filling non-signal shielding materials into the antenna slot; and processing the second surface into a back curved surface. The non-signal shielding material is filled in the antenna groove, and then the second surface is processed to form an appearance surface, so that the forming quality of the appearance surface is ensured, and the manufacturing efficiency of the shell is improved.

Description

Shell manufacturing method, shell and mobile terminal

technical field

The invention relates to the field of electronic equipment, in particular to a method for manufacturing a shell, the shell, and a mobile terminal.

Background technique

At present, in the manufacturing process of mobile phone casings, most of them need to add non-signal shielding materials to the casings. In the current manufacturing method of the casing, after the exterior surface of the casing is processed, a non-signal shielding material is added, and then the non-signal shielding material is polished, so that the non-signal shielding material is effectively combined with the exterior surface. However, in the process of grinding non-signal shielding materials, it is easy to damage the processed appearance surface, resulting in poor molding quality and low shell manufacturing efficiency.

Contents of the invention

The invention provides a casing manufacturing method, a casing and a mobile terminal which improve the casing manufacturing efficiency.

The present invention provides a shell manufacturing method, wherein the shell manufacturing method includes:

A housing base is provided, the housing base has a first surface, a second surface disposed opposite to the first surface, and an inner cavity extending from the first surface toward the second surface, and the second an antenna slot whose surface penetrates to the inner cavity;

Filling the antenna slot with non-signal shielding material;

The second surface is machined into a back curve.

The present invention also provides a shell, wherein the shell is manufactured by the above-mentioned shell manufacturing method.

The present invention also provides a series of mobile terminals, wherein the mobile terminal includes the above casing.

In the manufacturing method of the housing provided by the present invention, the non-signal shielding material is first filled into the antenna groove, and then the second surface is processed to form an appearance surface, which ensures the molding quality of the appearance surface and improves the housing quality. Production efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the implementation. Obviously, the drawings in the following description are some implementations of the present invention, which are common to those skilled in the art. As far as the skilled person is concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

Fig. 1 is a schematic flow chart of a shell manufacturing method provided by an embodiment of the present invention;

Fig. 2 is a schematic flow chart of step 101 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 3 is a schematic cross-sectional view of a housing manufactured by the method for manufacturing a housing provided in an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of the housing base in step 101 of the manufacturing method of the housing provided by the embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a metal plate in step 101 of the shell manufacturing method provided by an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of an extruded profile in step 101 of the shell manufacturing method provided by an embodiment of the present invention;

FIG. 7 is a schematic flowchart of step 101 to step 1012 of the casing manufacturing method provided by an embodiment of the present invention;

Fig. 8 is a processing schematic diagram of step 1012 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 9 is a processing schematic diagram of step 1012 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 10 is a processing schematic diagram of step 1012 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 11 is a processing schematic diagram of step 1012 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 12 is a processing schematic diagram of step 1012 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 13 is a processing schematic diagram of step 101 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 14 is a processing schematic diagram of step 101 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 15 is a processing schematic diagram of step 101 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 16 is a processing schematic diagram of step 101 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 17 is a processing schematic diagram of step 101 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 18 is a processing schematic diagram of step 102 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 19 is a processing schematic diagram of step 102 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 20 is a schematic flow chart of step 103 of the casing manufacturing method provided by the embodiment of the present invention;

Fig. 21 is a processing schematic diagram of step 103 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 22 is a processing schematic diagram of step 103 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 23 is a processing schematic diagram of step 104 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 24 is a processing schematic diagram of step 105 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 25 is a schematic flowchart of step 106 of the casing manufacturing method provided by the embodiment of the present invention;

Fig. 26 is a processing schematic diagram of step 106 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 27 is a processing schematic diagram of step 106 of the shell manufacturing method provided by the embodiment of the present invention;

Fig. 28 is a schematic cross-sectional view of a housing provided by an embodiment of the present invention;

Fig. 29 is a schematic cross-sectional view of a mobile terminal provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the term "thickness" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than implying Or an indication that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

Please refer to FIG. 1 and FIG. 3 , the present invention provides a shell manufacturing method, and the shell manufacturing method is used for making a shell. The housing 100 is processed from sheet metal and non-signal shielding materials. The outer surface of the casing 100 is composed of a plurality of curved surfaces, so that the appearance of the casing 100 is rounded and user experience is improved. It can be understood that the casing 100 is applied to a mobile terminal, and the mobile terminal may be a mobile phone, a tablet computer, or a notebook computer. In this embodiment, the housing 100 is the back cover of the mobile phone.

As shown in Fig. 1 and Fig. 4, described housing manufacturing method comprises steps:

101: Provide a housing base 10, the housing base 10 has a first surface 11, a second surface 12 disposed opposite to the first surface 11, and a base extending from the first surface 11 toward the second surface 12 The first inner cavity 13 , and the antenna groove 14 penetrating from the second surface 12 to the first inner cavity 13 .

In this embodiment, the housing base 10 adopts cutting, extrusion forming and milling processes. The housing base 10 is roughly in the shape of a rectangular plate. The first surface 11 and the second surface 12 are large surfaces on both sides of the housing base 10 . The periphery of the first surface 11 is curved, and the periphery of the second surface 12 is curved. The first surface 11 has a first bending zone 111 and an inner cavity 13 connected to the first bending zone 111. The second surface 12 has a second curved area 121 and a flat area 122 opposite to the inner cavity 13 . The curvature of the first curved region 111 of the first surface 11 is greater than the curvature of the second curved region 121 of the second surface 12 . The area of the first bending region 111 of the first surface 11 is greater than the area of the second bending region 121 of the second surface 12 . That is, during the manufacturing process of the first housing base 10, the stress on the first surface 11 is greater than that on the second surface 12. Utilize that the first shell base 10 has the first surface 11 and the second surface 12, utilize the outer shape of the shell base 10 to be close to the shell 100, so that the subsequent steps will The body matrix 10 exerts less stress, which prevents the shell matrix 10 from being damaged in subsequent steps. The inner cavity 13 is used to process the housing 100 into a cavity for accommodating electronic components, and to facilitate forming an insulating part into the inner cavity 13 . The antenna slot 14 runs through the inner cavity 13 . The antenna slot 14 is used to be processed into an antenna clearance area of the housing 100 . The housing base 10 also has a leftover edge 15 connecting the first surface 11 and the second surface 12 . During the processing of the housing base 10 , the leftover edge 15 is clamped by a clamping fixture to stabilize the housing base 10 and facilitate processing of the housing base 10 .

In one embodiment, the step 101 includes the steps of:

1011: Provide the extruded profile 20.

In this embodiment, as shown in FIG. 5 and FIG. 6 , the extruded profile 20 is processed from a metal plate. First, a rectangular sheet metal piece 21 is provided for cutting. The sheet metal part 21 has a first large area 211 and a second large area 212 . The first large surface 211 and the second large surface 212 are rectangular surfaces. The first large surface 211 is a flat surface, and the second large surface 212 is a flat surface. Before the first large surface 211 and the second large surface 212 are processed, the first large surface 211 and the second large surface 212 need to be cleaned to remove the first large surface 211 and the second large surface. Dust on the two sides 212. Then, the peripheral edge of the sheet metal part 21 is deburred. Grinding the peripheral side of the metal plate 21, so that the metal plate 21 is neat, avoiding the unbalanced force on the metal plate 21 during the processing of the metal plate 21, so that the metal plate 21 The deformation of the metal plate 21 is balanced, and the appearance effect is improved. The sheet metal part 21 is heated. The metal plate 21 is placed in a heating device, so that the temperature of the metal plate 21 rises to a preset value. After the metal plate 21 is heated, the intermolecular stress is reduced, so that the deformation stress of the metal plate 21 is reduced, which facilitates the extrusion of the metal plate 21 . Extruding the first large surface 211 and the second large surface 212 of the sheet metal part 21 , the first large surface 211 forms a first extrusion surface 213 , and the second large surface 212 forms a second extrusion surface 214 . Specifically, the metal plate 21 is extruded by a forging die. The metal plate 21 is placed in a forging die, and the metal plate 21 is pressed. The periphery of the first large surface 211 is extruded by a forging die, and the periphery of the second large surface 212 is extruded. The peripheral edge of the first large surface 211 of the metal plate 21 is bent and deformed by being pressed by the forging die to form the first pressing surface 213 . The peripheral edge of the second large surface 212 of the metal plate 21 is bent and deformed by being pressed by the forging die to form the second pressing surface 212 . When the forging die impacts and extrudes the metal plate 21 , the metal plate 21 is slowly subjected to stress, so as to prevent the metal plate 21 from defects such as collapse, pulling, and dents. The first extruding surface 213 is arranged flat on the non-peripheral area, and the second extruding surface 214 is arranged flat on the non-peripheral area, leaving enough machining allowance for subsequent processing. The second pressing surface 214 is bent to form grooves 215 on both sides in the length direction of the metal plate 21 . The groove 215 is used for processing and clamping the extruded profile 20, and reducing the processing cost of the extruded profile 20. By extruding the metal sheet 21 into the extruded profile 20, the internal stress of the extruded profile 20 is strengthened, and the extruded profile 20 is denser and harder.

1012: Process the extruded profile 20.

In this embodiment, the extruded profile 20 is processed so as to process the extruded profile 20 into a structure close to the shell base 10 . The extruded profile 20 can be processed by a forging forming process, or can be processed by a numerically controlled milling machine forming process. The first extrusion surface 213 of the extruded profile 20 is used to process the first surface 11 , and the second extrusion surface 214 is used to process the second surface 12 .

Referring to FIG. 7, in one embodiment, the step 1012 includes the steps of:

10121: Milling the extruded profile 20 for the first time.

As shown in Fig. 8, Fig. 9 and Fig. 10, in this embodiment, the extruded profile 20 is roughly milled by using a numerical control milling machine, so that the extruded profile 20 is processed into a shape approximately the same as that of the housing base 10. close to the structure. Firstly, a clamping positioning hole 213a is processed on the periphery of the first pressing surface 213 corresponding to the groove 215 . Then, a rough milling cavity 216 is machined on the first extrusion surface 213 according to the clamping positioning hole 213a. The rough milling cavity 216 is roughly close to the inner cavity 13 to facilitate machining into the inner cavity 13 . In the process of milling the rough milling cavity 216, a milling positioning hole 217 is processed in the rough milling cavity 216. The milling positioning hole 217 provides a positioning reference for the rough milling cavity 216 in the subsequent further finishing process, which facilitates the processing of the rough milling cavity 216 . Afterwards, the burrs on the first extrusion surface 213 are removed, and the periphery of the first extrusion surface 213 is processed, so that the first extrusion surface 213 is processed into the first surface 11 . The second extruded surface 214 of the extruded profile 20 is roughly milled to form a large surface 218 to be processed. The large surface to be processed 218 is used to be processed into the second surface 12 of the housing base 10 . By milling the extruded profile 20 for the first time, the extruded profile 20 is formed into a regular three-dimensional volume, which is convenient for subsequent milling.

In the first milling step of the extruded profile 20, the side wall connecting the first extruding surface 213 and the second extruding surface 214 is milled to obtain the large surface to be processed 218 and the side 219 of the first surface 11 to be processed.

10122: Obtain a rough milling part 22, the rough milling part 22 has a first surface 11 and a rough milling cavity 216 opened on the first surface 11.

As shown in Figure 11, in this embodiment, after the first extrusion surface 213 is processed into the first surface 11, the burrs on the first surface 11 and the large surface to be processed 218 are removed, and The rough milling cavity 216 is deburred to obtain the rough milling part 22 . The rough milling part 22 also has a side to be machined 219 connecting the first surface 11 and the large surface to be machined 218 . The side to be processed 219 is used to process the side structure of the casing 100 .

10123: Carry out second milling on the inner wall of the rough milling cavity 216 to form the receiving cavity 16 .

As shown in FIG. 12 , in this embodiment, the accommodating cavity 16 is further close to the inner cavity 13 . According to the milling positioning hole 217 , a counterbore or/and a boss is processed at a preset position in the rough milling cavity 216 , so that the rough milling cavity 216 forms the receiving cavity 16 . The accommodating cavity 16 is used to form an insulating material, so that the housing 100 has an insulating part, and the antenna radiator is isolated from the housing 100 by the insulating part, so that the antenna radiator can be installed inside the housing 100 conveniently. By processing the rough milling cavity 216 into the receiving cavity 16 , the insulating material formed in the receiving cavity 16 and the casing base 10 are combined more firmly.

By milling the extruded profile 20 twice, the dimension of the inner cavity 13 of the extruded profile 20 is accurate, and the molding quality of the shell base 10 is improved.

10124: Machining a side hole 17 penetrating through to the accommodating cavity 16 on the side to be processed 219 .

As shown in FIG. 13 , in this embodiment, the side hole 17 penetrating to the receiving cavity 16 is machined on the side surface 219 to be processed by milling technology. The side hole 17 is used to be processed into an earphone hole of the housing 100 . Before the insulating part is formed in the receiving cavity 16, the side hole 17 is processed first, so that the insulating material can be accommodated in the side hole 17 in the subsequent process of forming the insulating part in the receiving cavity 16 to form The earphone hole of the housing 100 is convenient for the earphone insert to be isolated from the housing 100 after being inserted into the earphone hole.

In another embodiment, the step 1012 includes the steps of:

The extruded profile 20 is forged.

In this embodiment, the extruded profile 20 is placed in a forging die, and the first extruding surface 213 and the second extruding surface 214 are respectively forged by using the upper die and the lower die of the forging die, so that the The first extrusion surface 213 is forged to form the first surface 11 , and the second extrusion surface 214 is forged to form the second surface 12 . And a flash edge 17 is forged between the first surface 11 and the second surface 12 .

A forged shell is obtained having a first surface 11 and a second surface 12 arranged opposite said first surface.

In this embodiment, after the forging of the first surface 11 and the second surface 12 is completed, the first surface 11 and the second surface 12 are deburred. The forged shell also has a flash edge connecting the first surface 11 and the second surface 12 . The side structure of the casing 100 is finally shaped by subsequent removal of the flash edge.

A receiving cavity 16 is processed on the first surface 11 .

In this embodiment, the receiving cavity 16 is milled on the first surface 11 by using a numerical control milling process.

The step 101 also includes the steps of:

1013: Obtain the shell 30 to be processed, the shell 30 to be processed has the first surface 11 and the receiving cavity 16 formed by the first surface 11 .

The step 101 also includes the steps of:

1014: Perform nanohole treatment on the shell 30 to be processed.

In this embodiment, a plurality of nanometer-scale concave holes are processed on the inner wall of the housing cavity 16 of the shell 30 to be processed, so as to facilitate the effective combination of subsequent insulating materials with the shell 30 to be processed. Firstly, the shell 30 to be processed is washed with water to remove grease from the shell 30 to be processed. Then, the steps of alkali washing, water washing, pickling, water washing, pre-oxidation, and water washing are sequentially performed on the processing shell 30 . Finally, the shell 30 to be processed is dried.

The step 101 also includes the steps of:

1015: Form the insulating part 18 into the receiving cavity 16 to obtain the inner cavity 13 .

As shown in FIG. 14 , in this embodiment, the shell 30 to be processed is a metal piece. The insulating part 18 is made of plastic material. The insulating part 18 is formed by an in-mold injection molding process. First, place the casing 30 to be processed in an injection mold, then inject hot-melt plastic material into the injection mold, open the injection mold after the hot-melt plastic material cools and solidifies, and place the casing 30 in the injection mold. The cured plastic part on 30 is formed into the insulating part 18 . The insulating part 18 provides an insulating environment for the housing 100 , and is convenient for fixing electronic components isolated from metal parts of the housing 100 on the insulating part 18 .

The step 101 also includes the steps of:

1016 : Milling the large surface to be processed 218 to form the second surface 12 .

As shown in FIG. 15 , in this embodiment, the large surface 218 to be processed is milled by a numerical control milling process to process the second surface 12 . Since the large surface to be processed 218 and the inner wall of the receiving cavity 16 are sequentially subjected to corrosion treatment of alkali washing, water washing, pickling, water washing, pre-oxidation, and water washing. The large surface to be processed 218 has nanoscale concave holes. The large surface 218 to be processed is removed, and the second surface 12 is shaped so that there are no nanoscale concave holes on the second surface 12 , which ensures the molding quality of the outer surface of the housing base 10 . Since the second surface 12 is formed after the insulating portion 18 is formed, the second surface 12 is not easily damaged, and the forming quality of the second surface 12 is improved.

The step 101 also includes the steps of:

1017: Process the antenna slot 14 penetrating to the receiving cavity 16 on the outside of the shell 30 to be processed.

As shown in FIG. 16 and FIG. 17 , in this embodiment, the antenna groove 14 penetrating through the receiving cavity 16 is processed from the second surface 12 . Two adjacent antenna slots 14 are machined at one end in the length direction of the second surface 12 of the housing 30 to be machined. The width of each antenna slot 14 is smaller than the distance between two antenna slots 14 . The antenna slot 14 is formed by milling process. Each of the antenna slots 14 separates the shell 30 to be processed. The insulating portion 18 blocks the opening of the antenna slot 14 in the receiving cavity 16 . The insulating part 18 stabilizes the separated part of the shell to be processed 30 , so that the shell to be processed 30 is structurally stable. A plurality of antenna slots 14 are milled at preset positions of the large surface to be processed 218 by a milling cutter. The antenna slot 14 has a straight section 31a and an arc section 31b connecting the straight section 31a. The straight section 31a extends along a straight line, and the arc section 31b extends along an arc. When milling the straight line segment 31a, a disc-shaped cutter can be used for milling to increase the milling speed. When milling the arc segment 31b, a cylindrical tool is used for milling, so as to facilitate the processing of the tool along the arc path, and to facilitate the smooth docking of the arc segment 31b and the straight segment 31a. After the antenna slot 14 is formed, the casing 30 to be processed and the insulating part 18 are subjected to alkali washing, water washing, pickling, water washing, pre-oxidation, and water washing corrosion treatment for the second time, so that the antenna slot 14 A nanoscale concave hole is formed on the side wall, so that the non-signal shielding material filled into the antenna slot 14 can be effectively combined with the shell 30 to be processed. In other embodiments, the antenna slot 14 may not completely block the shell 30 to be processed.

The shell making method also includes the steps of:

102: Fill the antenna slot 14 with a non-signal shielding material 32 .

As shown in FIG. 18 and FIG. 19 , in this embodiment, a filling jig 33 is provided, and the filling jig 33 is fixed at the place where the large surface 218 to be processed faces the plurality of antenna slots 14 . The filling jig 33 includes a top end 331 and a bottom end 332 opposite to the top end 331 . The filling jig 332 is provided with a dispensing channel 333 penetrating from the top end 331 to the bottom end 332 . The bottom end 332 is in contact with the second surface 12 , and the opening of the glue flow channel 333 at the bottom end 332 is facing the plurality of antenna slots 14 . The opening of the top end 331 of the glue filling channel 333 is used for pouring the melted non-signal shielding material 32 . The non-signal shielding material 32 is heated to a molten state, and the non-signal shielding material 32 in a molten state is poured into the glue filling channel 333 of the filling jig 33 . The non-signal screen material 32 in molten state flows into the antenna groove 14 through the glue filling channel 333 . The non-signal shielding material 32 in molten state is formed in the antenna slot 14 and gradually accumulates to the opening of the antenna slot 14 on the second surface 12 . The non-signal shielding material 32 to be melted flows into the antenna groove 14, and the non-signal shielding material 32 in the molten state is made into a solid non-signal shielding material 32 by adopting a cooling and solidification process, so that the solid non-signal shielding material 32 is compatible with the The housing 30 to be processed is effectively combined, and the antenna slot 14 is sealed. The non-signal shielding material 32 that overflows the antenna slot 14 and accumulates on the second surface 12 forms a flash glue 34 . The non-signal shielding material 32 overflows the antenna slot 14 , so that the non-signal shielding material 32 can still fill the antenna slot 14 after curing and shrinking, thereby ensuring the molding quality of the housing 100 .

The manufacturing method of the shell comprises the steps of:

103 : Process the second surface 12 into a curved back surface 41 .

In this embodiment, the back curved surface 41 is formed by removing the surface 12 and the overflow glue 34 accumulated on the second surface 12, so as to ensure the precise size of the back curved surface 41.

In one embodiment, referring to FIG. 20, the step 103 includes the steps of:

1031: milling the second surface 12 to form the milling curved surface 123

As shown in FIG. 21 , in this embodiment, the milling curved surface 123 where the boss 124 is connected to the boss 124 is milled at the second curved region 121 of the second surface 12 by a numerical control milling process. The outer peripheral side of the boss 122 extends along an elliptical track-shaped curve. The outer peripheral side of the boss 122 is in contact with the milled curved surface 123 through an arc curved surface 124. The included angle between the peripheral side of the boss 122 and the milled curved surface 123 is not fixed, so that the curvature radius of the arc curved surface 125 is also not fixed. For example: the peripheral side of the boss 122 has a first side 122a close to the edge of the second surface 12, the peripheral side of the boss 122 has a second side 122b away from the edge of the second surface 12, the The included angle between the first side 122 a and the milled curved surface 123 is larger than the included angle between the second side 122 b and the milled curved surface 123 . That is, there are at least two different arc radii in the arc curved surface 125 . By milling out the milling curved surface 123, and forming an elliptical racetrack-shaped boss 44 on the milling curved surface 123, and forming an arc curved surface 125 with at least two different arc radii so that the impact on the Due to the difficulty of processing the shell base 10 , a complex structure can be formed through a simple processing process, which improves the production efficiency.

1032: Turning the second surface 12 to form a turning surface 126 .

As shown in FIG. 22 , in this embodiment, the second surface 12 is milled at the second curved area 121 to form the milled curved surface 123 , and the flattened area 122 of the second surface 12 is processed into The turning surface 126 . The turning surface 126 is in smooth contact with the milling surface 123 . During the turning process of the flat area 122, the flat area 122 of the second surface 12 is turned by using a profiling tool, and the part of the non-signal shielding material 32 connected to the second surface 12 is turned, and the accumulation is removed by turning. The overflow glue 34 on the second surface 12 is removed, and the shape of the turning surface 126 is processed at the same time. The blade shape of the profiling tool is similar to the shape of the turning surface 126, thereby ensuring that the turning surface 126 is processed on the flattened area 122, reducing the man-hours of processing, and reducing the cost of the shell manufacturing method. the cost of. After removing the second surface 12 , the antenna slot 14 forms an antenna slot 35 .

1033: Treat the surface at the intersection of the turning curved surface 126 and the milling curved surface 123.

In this embodiment, the turning surface 126 and the milling surface 123 are smoothly connected by grinding the junction of the turning surface 126 and the milling surface 123 to shape the back surface 41 .

The shell making method also includes the steps of:

104: Remove the leftover edge 15.

As shown in FIG. 23 , in this embodiment, the leftover edge 15 is milled off by a milling process, and a side curved surface 42 connecting the first surface 11 and the back curved surface 41 is formed. The side curved surface 42 is smoothly connected to the first surface 11 , and the side curved surface 42 is smoothly connected to the back curved surface 41 .

The shell making method also includes the steps of:

105: Process the inner wall of the inner cavity 13 .

As shown in FIG. 24 , in this embodiment, the inner wall of the inner cavity 13 is further accurately milled by a milling process to form a back cover cavity 43 . By milling the insulating portion 18 of the inner wall of the inner cavity 13 , the back cover cavity 43 is used to place and stabilize various electronic components, so as to meet the use requirements of the housing 100 .

The shell making method also includes the steps of:

106 : Perform surface treatment on the back curved surface 41 .

In this embodiment, during the surface treatment process of the back curved surface 41 , surface treatment may also be performed on the side curved surface 42 and the first surface 11 . The back curved surface 41 , the side curved surface 42 and the first surface 11 form an appearance surface of the housing 100 . Surface treatment is performed through the back curved surface 41 , the side curved surface 42 and the first surface 11 , so that the appearance of the housing 100 meets requirements.

As shown in Figure 25, Figure 26 and Figure 27, described step 106 comprises steps:

1061 : Grinding the back curved surface 41 , side curved surface 42 and first surface 11 .

Grinding the burrs on the back curved surface 41 , the side curved surface 42 and the first surface 11 , and grinding the gap between the back curved surface 41 , the side curved surface 42 and the first surface 11 . Make the back curved surface 41, the side curved surface 42 and the first surface 11 smooth, and make the back curved surface 41 and the side curved surface 42 smooth, and the side curved surface 42 and the first surface 11 butt smooth.

1062: Fine polishing the back curved surface 41, the side curved surface 42 and the first surface 11.

Carrying out fine polishing on the preset areas of the back curved surface 41, the side curved surface 42 and the first surface 11, so that the said back curved surface 41, the side curved surface 42 and the first surface 11 form a surface with higher reflectivity in the preset area, Therefore, the casing 100 can produce the effect of reflecting light with a high brightness in a predetermined area.

1063: Sand blast the back curved surface 41, the side curved surface 42 and the first surface 11.

The back curved surface 41, the side curved surface 42 and the first surface 11 are sandblasted to produce a matte texture, so that the back curved surface 41, the side curved surface 42 and the first surface 11 exhibit properties such as oil resistance, scratch resistance, and dirt resistance. , and improve user tactility.

1064: Anodize the back curved surface 41, the side curved surface 42 and the first surface 11.

The back curved surface 41 , the side curved surface 42 and the first surface 11 are anodized to present required colors, so that the housing 100 can present various color requirements to meet customer requirements. It can be understood that the back curved surface 41, the side curved surface 42 and the first surface 11 respectively form the first appearance curved surface 41a and the second curved surface 41a of the housing 100 after surface treatment in the step 1061, step 1062 and step 1063 The appearance curved surface 42a and the third appearance curved surface 11a. The back curved surface 41 is different from the first appearance curved surface 41a only in the appearance structure, and is substantially the same in formation. For example, there may be a few burrs on the back curved surface 41, uneven unevenness on the surface, and bright reflective properties, while the first appearance curved surface 41a has no burrs, has balanced uneven lines on the surface, and is matte and difficult to reflect light. And has color. Similarly, the side curved surface 42 and the second curved surface 42a are only different in appearance structure, and generally formed in the same way. The first surface 11 and the third appearance curved surface 11a are also different in appearance structure, and generally have the same shape.

Please refer to FIG. 28 , the present invention provides a casing 100, the casing 100 includes a metal part 110 and an insulating part 18, the metal part 110 has a first appearance curved surface 41a and a first appearance curved surface 41a opposite to the first appearance curved surface 41a Three appearance curved surfaces 11a, the metal part 110 also has a back cover cavity 43 opened from the third appearance curved surface 11a to the first appearance curved surface 41a and penetrates from the first appearance curved surface 41a to the back cover cavity 43 of the antenna slot 35, the antenna slot 35 is filled with non-signal shielding material 32, and the insulating part 18 is fixed in the inner cavity of the metal part 110. The boss 122 is provided on the first curved surface 41 a, and the outer peripheral side of the boss 122 is in contact with the first curved surface 41 a through an arc surface 123 . The included angle between the peripheral side of the boss 122 and the first appearance curved surface 41a is not fixed, so that the curvature radius of the arc appearance curved surface 123 is also not fixed. The first appearance curved surface 41a of the housing 100 is smooth and round, which meets the user's touch feeling requirements and improves user experience. It can be understood that the housing 100 is the back cover of the mobile terminal. The mobile terminal may be a mobile phone, a tablet computer, or a notebook computer.

Referring to FIG. 29 , the present invention also provides a mobile terminal 200 , and the mobile terminal 200 includes the casing 100 . The mobile terminal 200 also includes a front cover 210 that covers the casing 100 , and the front cover 210 is composed of a glass plate and a display screen laminated on the glass plate. The front cover 210 covers the back cover cavity 43 of the housing 100 to protect the electronic components fixed in the back cover cavity 43 . The mobile terminal 200 may be a mobile phone, a tablet computer or a notebook computer and the like.

The above is the implementation manner of the embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the embodiment of the present invention, some improvements and modifications can also be made. These improvements and modifications are also It is regarded as the protection scope of the present invention.

Claims (20)

1. a kind of method for producing shell, it is characterised in that the method for producing shell includes：

Housing base is provided, the housing base have first surface, the second surface that the first surface is set relatively and by The inner chamber that the first surface extends towards the second surface, and it is through to by the second surface antenna of the inner chamber Groove；

Non-signal shielding material is filled into the antenna slot；

The second surface is processed into back bodice curve.

2. method for producing shell according to claim 1, it is characterised in that the step of providing housing base includes：

Extrudate is provided；

Process the extrudate；

Housing to be processed is obtained, the housing to be processed has first surface and the host cavity being opened in；

The profiled insulation portion into the host cavity, obtains the inner chamber；

In the outside of the housing to be processed, processing is through to the antenna slot of the host cavity.

3. method for producing shell according to claim 2, it is characterised in that the step of processing the extrudate includes：

Forge and press the extrudate；

Forging and stamping housing is obtained, the forging and stamping housing has the second surface that first surface and relatively described first surface are set；

Host cavity is processed on the first surface.

4. method for producing shell according to claim 2, it is characterised in that the step of processing the extrudate includes：

To the extrudate first time milling；

Part is rough milled in acquisition, described to rough mill that part has first surface and be opened in the first surface rough mills chamber；

Second of milling is carried out to the cavity wall of rough milling, to be molded host cavity.

5. method for producing shell according to claim 4, it is characterised in that to the step of the extrudate first time milling In rapid, milling positioning hole is processed on the extrudate.

6. method for producing shell according to claim 4, it is characterised in that described thick in the step of part is rough milled in acquisition Milling part also has the to be processed big face relative with the first surface, after the step of being molded the insulation division, described in milling Big face to be processed, to be molded the second surface.

7. method for producing shell according to claim 4, it is characterised in that described thick in the step of part is rough milled in acquisition Milling part also has the side to be processed for connecting the first surface；

After described the step of rough milling chamber second of milling of progress, processed on the side to be processed through the collecting The side opening of chamber.

8. method for producing shell according to claim 2, it is characterised in that in the host cavity before profiled insulation portion Also include step：

Nano aperture processing is carried out to the housing to be processed.

9. method for producing shell according to claim 8, it is characterised in that the step in profiled insulation portion in the host cavity Nanometer injection molding process is used in rapid.

10. according to the method for producing shell described in claim 1~9 any one, it is characterised in that the second surface is added Work is into the step of back bodice curve, second surface described in milling and the part non-signal shielding material for connecting the second surface, Obtain back bodice curve.

11. according to the method for producing shell described in claim 1~9 any one, it is characterised in that the second surface is added Work is into the step of back bodice curve, second surface described in turning and the part non-signal shielding material for connecting the second surface, Obtain back bodice curve.

12. method for producing shell according to claim 10, it is characterised in that the second surface is processed into back bending In the step of face, material is shielded using second surface described in copying tool turning and the part non-signal for connecting the second surface Material.

13. according to the method for producing shell described in claim 1~9 any one, it is characterised in that filled out into the antenna slot In the step of filling non-signal shielding material, the non-signal shielding material overflows the antenna slot, and is piled up in second table Flash glue is formed on face；

In the step of second surface is processed into back bodice curve, the second surface is removed, and remove and be located at described second Flash glue and removal on surface connect the part non-signal shielding material of the second surface.

14. according to the method for producing shell described in claim 1~9 any one, it is characterised in that providing housing base In step, the housing base also has the clout side for connecting the first surface and the second surface；By second table Face also includes step after being processed into back bodice curve：Remove the clout side.

15. method for producing shell according to claim 14, it is characterised in that in the step of removing the clout side, add Work goes out the N-Side surf for connecting the first surface and the back bodice curve.

16. according to the method for producing shell described in claim 1~9 any one, it is characterised in that the second surface is added Work also includes step afterwards into back bodice curve：

Process the inwall of the inner chamber.

17. according to the method for producing shell described in claim 1~9 any one, it is characterised in that the method for producing shell Also include step：

The back bodice curve is surface-treated.

18. method for producing shell according to claim 17, it is characterised in that be surface-treated to the back bodice curve The step of include：

Polish the back bodice curve；

Essence throws the back bodice curve；

To the back bodice curve sandblasting；

To the back bodice curve anodic oxidation.

19. a kind of housing, it is characterised in that any one method for producing shell is made using claim 1~18 for the housing .

20. a kind of mobile terminal, it is characterised in that the mobile terminal includes the housing described in claim 19.