WO2018161688A1

WO2018161688A1 - Housing, and manufacturing method thereof

Info

Publication number: WO2018161688A1
Application number: PCT/CN2017/118390
Authority: WO
Inventors: 章礼泽
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-03-06
Filing date: 2017-12-25
Publication date: 2018-09-13
Also published as: CN108541152A

Abstract

A housing, comprising: a plastic housing main body, and a metal layer and an anode oxidization layer sequentially deposited on the plastic housing main body. The anode oxidization layer comprises a barrier layer and a porous layer having multiple pores. The barrier layer is disposed between the metal layer and the porous layer.

Description

Housing and method of manufacturing same

Technical field

The present disclosure relates to terminal technology, for example, to a housing and a method of fabricating the same.

Background technique

With the development of terminal technologies, smart terminals are increasingly favored by people. At the same time, in order to protect smart terminals, and in addition to aesthetic considerations, manufacturers are increasingly inclined to configure a metal casing for smart terminals (such as smart phones, etc.) to attract consumers' attention.

Metal casings are generally manufactured through a variety of processes such as computer numerical control (CNC) processes and surface treatment processes. The complexity of the manufacturing process makes the product yield lower, so the metal is affected by the manufacturing process. The production cost of the casing is very high, so that consumers also need to pay a higher purchase cost.

Summary of the invention

The embodiment provides a housing and a manufacturing method thereof, which solves the problem of high cost of the metal casing.

This embodiment provides a housing, including:

Plastic shell body;

a metal layer and an anodized layer sequentially deposited on the plastic shell body;

Wherein the anodized layer comprises a barrier layer and a porous layer having a porosity; the barrier layer is disposed between the metal layer and the porous layer.

In an embodiment, the plastic shell body includes a first surface and a second surface;

The first surface of the plastic shell body is formed with an accommodating space of the housing, the second surface is a surface opposite to the first surface, and the metal layer and the anodized layer are sequentially Deposited on the second surface.

In an embodiment, the method further includes:

a hardness layer disposed between the plastic shell body and the metal layer; the hardness layer bringing the hardness of the shell to a set value.

In an embodiment, the method further includes: a base layer disposed between the plastic shell body and the hardness layer, the base layer being an insulating layer.

In an embodiment, the material of the base layer is a transparent ultraviolet light-curing paint.

In an embodiment, the hardness layer is made of chromium or nickel.

In an embodiment, further comprising a dye filled in the pores of the porous layer of the anodized layer, the dye being arranged to cause the housing to assume a set color.

In an embodiment, a cover layer disposed on the porous layer is further included; the cover layer is configured to block precipitation of the dye.

In an embodiment, the metal layer is an aluminum layer; and the anodized layer is an aluminum oxide layer.

The embodiment further provides a manufacturing method of the housing, comprising:

Forming a plastic shell body by plastic injection molding;

Depositing a metal layer on the plastic shell body;

Forming an anodized layer on the deposited metal layer;

In an embodiment, the forming the plastic shell body by plastic injection molding further includes:

Forming a plastic case body by plastic injection molding, and embedding a conductive member in the plastic case body, wherein a part of a surface of the conductive member is exposed on a first surface and a second surface of the plastic case body; the first surface An accommodating space is formed; the second surface is a surface opposite to the first surface.

In an embodiment, the depositing a metal layer on the plastic shell body comprises: depositing a metal layer on the second surface; the deposited metal layer covering the second surface and the second surface is exposed Conductive component

Forming an anodized layer on the deposited metal layer, comprising:

The conductive member exposed on the first surface is connected as an electrode to the positive electrode of the anodization circuit to anodize the plastic case body on which the metal layer is deposited, and an anodized layer is formed on the metal layer.

In an embodiment, the depositing a metal layer on the second surface comprises:

Depositing a hardness layer on the second surface; the hardness layer bringing the hardness of the casing to a set value; and depositing a hardness layer covering the second surface and the second surface to expose the conductive member;

The metal layer is deposited on the hardness layer.

In an embodiment, the depositing the hardness layer on the second surface comprises:

Depositing a base layer on the second surface; the deposited base layer does not cover a surface of the conductive member;

A hardness layer is deposited on the base layer; a deposited hardness layer covers the base layer and the conductive member.

In an embodiment, the depositing the substrate layer on the second surface comprises:

Spraying a transparent ultraviolet light-curing paint on the second surface;

The ultraviolet light-curing paint sprayed on the surface of the conductive member is removed by a laser.

In an embodiment, the depositing a hardness layer comprises:

The hardness layer is deposited by evaporation.

In an embodiment, the plastic shell body is formed by plastic injection molding, and the conductive member is embedded in the plastic shell body, including:

Placing the conductive member in a mold;

Flowing plastic into a mold in which the conductive member is placed;

Plasticizing a mold filled with flowing plastic;

The deposited metal layer comprises:

The metal layer is deposited by evaporation.

In an embodiment, the method further includes:

The plastic shell body after the anodized layer is formed is placed in a dyeing bath for dyeing, and after the dye is adsorbed through the porous layer, it is filled in the pores of the porous layer.

In an embodiment, the method further includes:

A cover layer is formed on the plastic shell body filled with the dye; the cover layer is arranged to block precipitation of the dye.

In an embodiment, the forming the cover layer comprises:

The dyed plastic shell body is placed in distilled water to form the cover layer;

or,

The cover layer is deposited on the dyed plastic shell body by spraying. The casing and the manufacturing method thereof provided by the embodiment have the advantages of simple process, high process efficiency and low cost, and the formed casing has the texture of the metal casing, and the whole surface of the casing is uniform, which can meet the user's use requirements and is improved. user experience.

BRIEF abstract

In the drawings, which are not necessarily to scale, the Like reference numerals with different letter suffixes may indicate different examples of similar components. The drawings generally illustrate the various embodiments discussed herein by way of example and not limitation.

1 is a schematic flow chart of a method for manufacturing a housing according to an embodiment;

2 is a schematic flow chart of a method for manufacturing a second embodiment of the present embodiment;

3 is a schematic structural view of a housing after the completion of step 201 in the second embodiment;

4 is a schematic structural view of a housing after the completion of step 202 in the second embodiment;

Figure 5 is a schematic structural view of the housing after the completion of step 203 in the second embodiment;

Figure 6 is a schematic structural view of the housing after the completion of step 204 in the second embodiment;

7 is a schematic structural view of an anodizing device in step 205 of the second embodiment;

8 is a schematic structural view of a housing after step 205 is completed in the second embodiment;

Figure 9 is a schematic view showing the microstructure of the aluminum oxide film of the second embodiment;

10 is a schematic view showing the process of the action of the dye molecules and the porous layer in the step 206 of the second embodiment;

Figure 11 is a schematic view showing the microstructure of the housing portion after the completion of step 207 in the second embodiment;

FIG. 12 is a schematic structural view of the housing after the completion of step 207 in the second embodiment.

detailed description

On the one hand, the metal casing of the related art generally needs to be manufactured through various processes such as a CNC process and a surface treatment process, and is very complicated to manufacture, so even with the most strict control method, the process yield is still low, resulting in The price of metal casings remains high, and consumers pay extra for this.

In the related art, the material of the metal casing is mainly an aluminum alloy material, and after a complicated CNC machining process, the surface of the metal casing of the aluminum alloy material is anodized, and the final metal casing is obtained. At the same time, in order to ensure the radio frequency performance of the terminal antenna, there must be a partition on the metal parts. Therefore, the processing is complicated, the yield is low, the cost is high, and the antenna performance often fails to meet the design specifications.

On the other hand, the plastic injection molded housing is the most economical housing, but the plastic housing has a very low profile and is difficult to attract consumers.

Therefore, how to treat the surface of the plastic casing into the same appearance as the metal casing is an important direction of the industry research.

Based on this, in the present embodiment, the plastic shell body is formed by plastic injection molding, and the conductive shell is embedded with the conductive member, and the conductive member is exposed on the first surface and the second surface of the plastic shell body. a portion of the surface; the first surface is formed with an accommodating space; the second surface is a surface exposed by the accommodating space for accommodating the electronic device; a metal layer is deposited on the second surface; and the deposited metal layer Covering the second surface and the metal member; connecting the conductive member exposed on the first surface as an electrode to the anode of the anodizing circuit to anodize the plastic shell body on which the metal layer is deposited, on the metal layer Forming an anodized layer; wherein the anodized layer comprises a barrier layer and a porous layer having a porosity; the barrier layer is disposed between the metal layer and the porous layer.

Embodiment 1

This embodiment provides a manufacturing method of a housing. As shown in FIG. 1 , the method includes: Step 110 to Step 130.

In step 110, a plastic shell body is formed by plastic injection molding.

In one embodiment, a conductive member is embedded in the plastic shell body, and a portion of the surface of the conductive member is exposed on the first surface and the second surface of the plastic shell body.

The first surface is formed with an accommodating space; the second surface is a surface exposed by the accommodating space accommodating device (such as an electronic device), that is, a surface opposite to the first surface.

In an embodiment, the conductive member is placed in a mold;

Flowing plastic into a mold in which the conductive member is placed;

The mold infused with the flowing plastic is plasticized.

Here, the conductive member functions to form an electrical path together with the cathode electrode and the power source to deposit an anodized layer when the anode layer is subsequently deposited as an anode electrode.

In practical applications, the shape of the conductive member may be a column shape and the number of the conductive members may be at least one for convenience of application, such as convenience and electrical conductivity for connection with the positive electrode of the power source. Further, the conductive member may be a metal material having good conductivity, such as copper or the like.

The material of the plastic forming the plastic shell body may be an acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate (PC) or the like which does not have a self-lubricating plastic.

Here, the self-lubricating effect means that the solid plastic itself has a lubricating effect. A plastic that does not have a self-lubricating function refers to a plastic that does not have a lubricating effect by itself.

In step 120, a metal layer is deposited on the second surface.

Here, a deposited metal layer covers the second surface and the metal features.

Generally, the hardness of the plastic is inferior to the hardness of the metal, so in order to make the manufactured casing have some texture of the metal casing, it is necessary to modify the plastic casing body so that the plastic casing body has a certain hardness.

Based on this, in an embodiment, before the depositing the metal layer on the second surface, the method may further include:

Depositing a hardness layer on the second surface;

Here, the hardness layer causes the hardness of the casing to reach a set value. Depositing a hardness layer covering the second surface and the conductive member;

Accordingly, the metal layer is deposited on the hardness layer.

In practical applications, the hardness value of the casing can be determined as needed, and then the hardness layer of the corresponding thickness is deposited according to the set hardness value.

In practical application, the surface of the plastic shell body formed by plastic injection molding is not flat under the microscopic (cannot be seen by the naked eye). In order to make the surface of the deposited hardness layer smooth and flat, it is necessary to pre-predict the surface of the plastic shell body. deal with.

Based on this, in an embodiment, before the second surface is deposited with the hardness layer, the method may further include:

Correspondingly, a hardness layer is deposited on the base layer; a deposited hardness layer covers the base layer and the conductive member.

The deposited substrate layer is in complete contact with the second surface and the hardness layer, and the hardness layer is planarized.

Wherein the depositing the base layer on the second surface comprises:

The substrate layer is deposited on the second surface by spraying.

Here, the base layer is an insulating layer.

Depositing the substrate layer on the second surface by spraying, comprising:

Spraying a transparent ultraviolet light curing paint on the second surface;

Accordingly, the ultraviolet light-curable paint sprayed on the surface of the conductive member is removed by a laser.

The deposited base layer provides sufficient adhesion for subsequent deposition of the hardness layer, providing a good basis for the flatness of the hardness layer, so that the manufactured shell has better flatness.

By spraying a transparent ultraviolet light-curing paint on the second surface, and curing the paint after ultraviolet irradiation to form the base layer, depositing the base layer in this manner is simple in implementation and low in cost.

Wherein, the purpose of removing the ultraviolet light-curing paint sprayed on the surface of the conductive member by means of a laser is to bring the conductive member into contact with the hardness layer in preparation for depositing the anodized layer.

The hardness layer is formed by depositing a metal, so the hardness layer can be deposited by evaporation.

In this embodiment, a target material for depositing a hardness layer is placed in the vapor deposition machine, and the plastic shell body on which the pre-deposition is completed is placed at a set position of the vapor deposition machine, and then the deposition speed and deposition time are set, and the current is set. Thereafter, the vapor deposition machine heats the target under vacuum to cause the target to evaporate or sublime under vacuum conditions, and the evaporated or sublimated metal precipitates on the second surface or the substrate layer to form a hardness layer.

Here, in practical applications, the material used to deposit the hardness layer may be chromium or nickel. Accordingly, the target is chromium or nickel.

The metal layer can also be deposited by evaporation. The process of depositing the metal layer by vapor deposition is similar. First, the deposition thickness of the metal layer is set, then the target (aluminum) is placed in the vapor deposition machine, and the plastic shell body on which the pre-deposition is completed is placed on the vapor deposition machine. The set position is set according to the deposition thickness and the deposition time. After the power is applied, the vapor deposition machine will deposit a metal layer on the hardness layer. The deposition principle is similar to the process and principle of depositing the hardness layer, and will not be described here.

In step 130, an anodized layer is deposited on the metal layer.

Here, since the anodic oxide layer is to be deposited, while in the more common case producing anodic oxide layer is aluminum oxide (Al ₂ O ₃₎ layer, the metal layer is an aluminum layer.

An anodized layer is deposited on the metal layer by anodization.

In one embodiment, the conductive member exposed on the first surface is connected as an electrode to the anode of the anodization circuit to anodize the plastic shell body on which the metal layer is deposited, and an anodized layer is formed on the metal layer. .

In one embodiment, after the pre-deposition is completed, the conductive member exposed on the first surface is connected to the positive electrode of the circuit (which is a power source after being turned on), and a metal electrode (such as a lead plate) is connected to the negative electrode of the circuit, and then Then put it into the oxidation tank and turn on the circuit to perform the anodization process.

Wherein, the oxidation pool generally contains a preset mass percentage concentration, for example, about 20% sulfuric acid solution.

The basic principle of the anodizing method is: in the anodizing process, under the action of current, the O ² ions generated by the electrolysis will move to the positive electrode of the power source, and at the same time, the aluminum on the surface of the aluminum layer will chemically react with the sulfuric acid, thereby Al ³⁺ ions are generated on the surface of the aluminum layer, and O ² ions are combined with Al ³⁺ ions to form aluminum oxide, and the generated alumina is dissolved by sulfuric acid to regain Al ³⁺ ions, which progresses with time. The dissolution and formation of alumina reaches a dynamic equilibrium, which ultimately forms an aluminum oxide layer.

Wherein, the deposited aluminum oxide layer comprises a barrier layer and a porous layer; the barrier layer is disposed between the metal layer and the porous layer.

In addition, in order to make the manufactured casing can present various colors to meet various needs of the user, the plastic shell body after depositing the anodized layer can be placed in the dyeing tank for dyeing, so that the dye molecules are porous. After the layer is adsorbed, it is filled in the pores of the porous layer.

Here, in practical use, the dye is generally an aromatic sodium sulfonate, such as a water-soluble azo dye.

After the dyeing treatment, the pores of the porous layer of the anodized layer are filled with a dye for bringing the shell to a set color.

Further, in order to prevent the dye in the pores from being precipitated to change the color of the shell, a cover layer may be formed on the plastic shell body filled with the dye; the cover layer is used to block the dye deposition.

Among them, the cover layer may be formed chemically, or the cover layer may be formed by physical means.

In an embodiment, the process of chemically forming the cap layer comprises:

The dyed plastic shell body (the plastic shell body filled with the dye) is placed in distilled water, and the alumina of the surface layer of the porous layer is chemically reacted with water molecules to form alumina monohydrate, since the density of alumina monohydrate is less than oxidation. The density of aluminum covers the pores of the porous layer to form the cover layer. That is to say, the cover layer is disposed on the porous layer, and the cover layer can block the precipitation of the dye, that is, the cover layer serves to block the precipitation of the dye.

The process of physically forming the overlay layer includes:

The cover layer is deposited on the plastic shell body after dyeing by spraying.

Among them, the specific process of depositing the cover layer by spraying is similar to the process of depositing the base layer.

In an embodiment, a transparent ultraviolet light-curing paint may be sprayed on the plastic casing, and the paint is cured after ultraviolet irradiation to form the cover layer.

Based on the above method, the embodiment further provides a housing, the housing comprising:

Plastic shell body;

a metal layer and an anodized layer are sequentially deposited on the plastic shell body; wherein

The anodized layer includes a barrier layer and a porous layer having a porosity; the barrier layer is disposed between the metal layer and the porous layer.

Here, in an embodiment, a hardness layer is further disposed between the plastic shell body and the metal layer; the hardness layer causes the hardness of the shell to reach a set value, so that the shell has a certain The hardness thus has some texture of the metal casing.

In an embodiment, a base layer may be disposed between the plastic shell body and the hardness layer, the base layer is an insulating layer, and the base layer is in complete contact with the plastic shell body and the hardness layer. And flattening the hardness layer.

Wherein, the material of the base layer is a transparent ultraviolet light curing paint.

In order to allow the manufactured housing to exhibit a wide variety of colors to meet various needs of the user, the pores of the porous layer of the anodized layer are filled with a dye for rendering the housing present. The color is fixed.

Here, in order to prevent the dye in the void from being precipitated to change the color of the casing, the porous layer is further provided with a cover layer for blocking the precipitation of the dye.

In practical applications, the second surface of the plastic shell body may be sequentially deposited with the above-mentioned layers; the first surface of the plastic shell body is formed with the housing space; the second surface is The surface that is exposed after the electronic device is accommodated in the space.

The embodiment provides a method for forming a plastic shell body by plastic injection molding, and a conductive member is embedded in the plastic shell, and a part of the surface of the conductive member is exposed on the first surface and the second surface of the plastic shell body; The first surface is formed with an accommodating space; the second surface is a surface exposed by the accommodating space for accommodating the electronic device; a metal layer is deposited on the second surface; and the deposited metal layer covers the first surface a surface and a metal member; the conductive member exposed on the first surface is connected as an electrode to the anode of the anodizing circuit to anodize the plastic shell body on which the metal layer is deposited, and an anodized layer is formed on the metal layer The anodized layer includes a barrier layer and a porous layer having a porous layer; the barrier layer is disposed between the metal layer and the porous layer. The solution provided by the embodiment is simple in process, high in process efficiency, and low in cost. After the plastic shell body is subjected to the above treatment, a metal layer and an anodized layer are sequentially deposited on the plastic shell body; the anodized layer includes a barrier layer The porous layer has a porous layer; the barrier layer is disposed between the metal layer and the porous layer, and the formed shell has the texture of the metal shell, and the whole surface of the shell is uniform, which can meet the user's use requirements and enhance the user experience. .

Additionally, a base layer is deposited on the second surface; the deposited base layer does not cover the surface of the conductive member; accordingly, a hardness layer is deposited on the base layer; a deposited hardness layer covers the base layer and the a conductive member, in the formed casing, a base layer may be further disposed between the plastic shell body and the hardness layer, the base layer is in complete contact with the plastic shell body and the hardness layer, and the The hardness layer is flat, and the base layer can provide sufficient adhesion for the deposition of the subsequent hardness layer, which provides a good foundation for the flatness of the deposited hardness layer, so that the manufactured casing has a flat appearance and improves the user experience.

Embodiment 2

Based on the first embodiment, the present embodiment details the manufacturing process of the housing and the structure of the housing.

In this embodiment, it is assumed that there are two conductive members.

The manufacturing process of the housing, as shown in FIG. 2, includes: Step 201 to Step 207.

In step 201, the plastic shell body is formed by plastic injection molding;

In one embodiment, the plastic shell body 11 is injection molded from plastic. When the plastic is injection molded, two conductive members 12 are placed in the mold. After the injection molding, the two conductive members 12 are embedded in the plastic shell body 11, as shown in FIG. 3, and are exposed on the upper and lower surfaces of the plastic shell body 11. Come out to provide electrodes for subsequent anodization.

In step 202, a base layer is deposited on the plastic shell body;

In an embodiment, a transparent and insulating ultraviolet light-curing paint is sprayed on the surface of the plastic case body 11 (the surface of the housing in which the housing space is exposed), and the base layer 21 is formed. The formation provides sufficient adhesion and a good appearance for the subsequent vapor deposited metal film layer (or hardness layer). After spraying, the paint deposited on the two conductive members 12 is laser-destroyed (i.e., removed by laser) to expose the conductive member 12, as shown in Fig. 4, so that subsequent anodization can proceed smoothly.

In step 203, a hardness layer is deposited on the base layer;

In one embodiment, the plastic shell body 11 after the completion of the step 2 is placed in a vapor deposition machine, and a target (such as nickel or chromium) for depositing a hardness layer is attached to the vapor deposition machine, and the corresponding parameters are set, and then steamed. After the plating machine is energized, a layer of nickel or chromium is automatically deposited on the base layer 21 to form a hardness layer 31, as shown in FIG.

In step 204, depositing a metal layer on the hardness layer;

In one embodiment, the plastic shell body 11 after the completion of step 203 is placed in a vapor deposition machine, and a target (aluminum) for depositing a metal layer is attached to the vapor deposition machine. After the corresponding parameters are set, the vapor deposition machine is energized. Thereafter, a layer of aluminum is automatically deposited on the base layer 21 to form the metal layer 41 as shown in FIG. The metal layer 41 lays a material foundation for the subsequent anodization, which lays a material foundation for forming an anodized layer.

In step 205, an anodized layer is deposited on the metal layer;

In an embodiment, as shown in FIG. 7, the plastic case body 11 (referred to as part 51) after the completion of step 204 is connected to the positive electrode of the circuit 55 (the conductive member 12 is connected to the positive electrode of the circuit 55), at the circuit 55. The negative electrode is connected to the lead plate 52, and then placed in the oxidation tank 54. The oxidation tank contains a sulfuric acid solution 53 having a mass percentage concentration of a predetermined value, for example, about 20%. At normal temperature, the anodic oxidation reaction process is performed after the direct current is passed.

Among them, the conductive member 12 is electrically connected to the metal layer 41 through the hardness layer 31.

After the anodizing process, as shown in Fig. 8, a porous alumina film having a thickness of about 20 μm is formed on the surface of the metal layer 41, thereby forming an anodized layer 61.

As can be seen in conjunction with FIG. 9, the microstructure of the aluminum oxide film includes a barrier layer 62 and a porous layer 63.

In step 206, filling the dye;

In one embodiment, the plastic shell body 11 after the completion of step 205 is placed in a dyeing tank for dyeing, and the dye molecules 71 are adsorbed by the porous layer 63 and filled in the pores of the porous layer 63, as shown in FIG. The dye can make the surface of the shell appear in a variety of colors.

In step 207, a cover layer is formed.

In one embodiment, the plastic shell body 11 after the completion of step 206 is placed in distilled water, and the temperature of the distilled water may be 80 ° C or higher, and the surface layer alumina and water are combined to form alumina monohydrate (Al ₂ O _{3 ).} H ₂ O), thereby forming a cover layer 81, as shown in FIG. 11, the cover layer 81 functions as a sealing hole.

Here, since the density of the alumina monohydrate is smaller than the density of the alumina, the volume of the alumina monohydrate is large, thereby blocking the pores of the porous layer 63, so that the dye in the pores does not precipitate discoloration, and the porous layer 63 is allowed. Loss of the ability to adsorb other substances.

After the above steps are completed, a housing as shown in FIG. 12 is formed. As can be seen from FIG. 12, the plastic shell body 11 is embedded with the conductive member 12, and the base layer 21 and the hardness layer are sequentially disposed on the surface of the plastic shell body 11. 31. A metal layer 41, an anodized layer 61, and a cap layer 81.

As can be seen from the above description, the present embodiment performs a series of treatments on the surface of the plastic shell body, and the obtained surface treatment structure includes: a base layer, a hardness layer, a metal layer, and an anodized layer which are sequentially disposed on the surface of the plastic shell body. .

With the solution provided by the embodiment, the surface treatment method has the advantages of simple process, high process efficiency and low cost. Moreover, the obtained plastic casing surface treatment structure has an overall uniform appearance effect, and the color is bright and the texture is strong (after the completion of steps 205 to 206, the texture of the metal casing is obtained).

Industrial applicability

The casing and the manufacturing method thereof provided by the embodiment have the advantages of simple process, high process efficiency and low cost, and the formed casing has the texture of the metal casing, and the surface of the casing is uniform overall, which can meet the user's use requirements and is improved. The user experience.

Claims

A housing comprising:

Plastic shell body;

a metal layer and an anodized layer sequentially deposited on the plastic shell body;

Wherein the anodized layer comprises a barrier layer and a porous layer having a porosity; the barrier layer is disposed between the metal layer and the porous layer.
The housing of claim 1 wherein said plastic housing body comprises a first surface and a second surface;

The first surface of the plastic shell body is formed with an accommodating space of the housing, the second surface is a surface opposite to the first surface, and the metal layer and the anodized layer are sequentially Deposited on the second surface.
A housing according to claim 1 or 2, further comprising:

a hardness layer disposed between the plastic shell body and the metal layer; the hardness layer bringing the hardness of the shell to a set value.
The housing according to claim 3, further comprising: a base layer disposed between the plastic case body and the hardness layer, the base layer being an insulating layer.
The casing according to claim 4, wherein the material of the base layer is a transparent ultraviolet light-curing paint.
The casing according to claim 3, wherein the hardness layer is made of chromium or nickel.
A casing according to any one of claims 1 to 6, further comprising a dye filled in the pores of the porous layer of the anodized layer, the dye being arranged to cause the casing to assume a set color.
The casing according to claim 7, further comprising a cover layer disposed on said porous layer; said cover layer being disposed to block precipitation of said dye.
The casing according to any one of claims 1 to 8, wherein the metal layer is an aluminum layer; and the anodized layer is an aluminum oxide layer.
A method of manufacturing a housing, comprising:

Forming a plastic shell body by plastic injection molding;

Depositing a metal layer on the plastic shell body;

Forming an anodized layer on the deposited metal layer;

Wherein the anodized layer comprises a barrier layer and a porous layer having a porosity; the barrier layer is disposed between the metal layer and the porous layer.
The method according to claim 10, wherein the forming the plastic shell body by plastic injection molding further comprises:

Forming a plastic case body by plastic injection molding, and embedding a conductive member in the plastic case body, wherein a part of a surface of the conductive member is exposed on a first surface and a second surface of the plastic case body; the first surface An accommodating space is formed; the second surface is a surface opposite to the first surface.
The method of claim 11 , depositing a metal layer on the plastic shell body, comprising: depositing a metal layer on the second surface; depositing the metal layer to cover the second surface and the second surface a conductive member that is exposed;

Forming an anodized layer on the deposited metal layer, comprising:

The conductive member exposed on the first surface is connected as an electrode to the positive electrode of the anodization circuit to anodize the plastic case body on which the metal layer is deposited, and an anodized layer is formed on the metal layer.
The method of claim 12 wherein said depositing a metal layer on said second surface comprises:

Depositing a hardness layer on the second surface; the hardness layer bringing the hardness of the casing to a set value; and depositing a hardness layer covering the second surface and the second surface to expose the conductive member;

The metal layer is deposited on the hardness layer.
The method of claim 13 wherein said depositing a hardness layer on said second surface comprises:

Depositing a base layer on the second surface; the deposited base layer does not cover a surface of the conductive member;

A hardness layer is deposited on the base layer; a deposited hardness layer covers the base layer and the conductive member.
The method of claim 14 wherein said depositing said substrate layer on said second surface comprises:

Spraying a transparent ultraviolet light-curing paint on the second surface;

The ultraviolet light-curing paint sprayed on the surface of the conductive member is removed by a laser.
The method according to any one of claims 13 to 15, wherein the depositing the hardness layer comprises:

The hardness layer is deposited by evaporation.
The method according to claim 11, wherein said forming a plastic case body by plastic injection molding and embedding a conductive member in said plastic case body comprises:

Placing the conductive member in a mold;

Flowing plastic into a mold in which the conductive member is placed;

Plasticizing a mold filled with flowing plastic;

The deposited metal layer comprises:

The metal layer is deposited by evaporation.
A method according to any of claims 10-17, further comprising:

The plastic shell body after the anodized layer is formed is placed in a dyeing bath for dyeing, and after the dye is adsorbed through the porous layer, it is filled in the pores of the porous layer.
The method of claim 18, further comprising:

A cover layer is formed on the plastic shell body filled with the dye; the cover layer is arranged to block precipitation of the dye.
The method of claim 19, wherein said forming a cover layer comprises:

The dyed plastic shell body is placed in distilled water to form the cover layer;

or,

The cover layer is deposited on the dyed plastic shell body by spraying.