CN107278385A - A terminal shell and terminal - Google Patents

Abstract

The embodiments of the invention provide a kind of terminal enclosure.At least a portion of the terminal enclosure includes internal layer and outer layer, the internal layer is aluminium lamination or aluminium alloy layer, the outer layer is stainless steel layer, the aluminium lamination or aluminium alloy layer are towards the inside of terminal, the stainless steel layer is towards the outside of the terminal, the thickness of the aluminium lamination or aluminium alloy layer is 0.3 1.0mm, and the thickness of the stainless steel layer is 0.05 0.3mm.The terminal enclosure has the distinctive metal appearance effect of stainless steel, and appearance glossiness is high, and manufacturing cost is low.The embodiment of the present invention, which is also provided, a kind of includes the terminal of above-mentioned terminal enclosure.

Description

A terminal shell and terminal

technical field

Embodiments of the present invention relate to the technical field of terminals, and in particular, to a terminal casing and a terminal.

Background technique

In recent years, smartphones with a metal appearance have become more and more popular among consumers. At present, most of the metal appearance parts of smart phones are made of aluminum alloy, which leads to serious homogeneity of the appearance of mobile phones. In addition, the exterior parts made of aluminum alloy are made of aluminum alloy, and the shape of the exterior parts is obtained through stamping, CNC (computer numerical control, computer numerical control) and other processing techniques, and then realized through surface treatment processes such as polishing, sandblasting, and anodizing. The unique appearance of aluminum alloy, its processing technology is complicated, the processing cycle is long, the production efficiency is low, the cost is high, and the gloss of the metal appearance is low.

Contents of the invention

Embodiments of the present invention aim to provide a terminal housing and a terminal having the same. The housing has a unique metal appearance effect of stainless steel, has a high glossy appearance surface, and is low in manufacturing cost.

Specifically, an embodiment of the present invention provides a terminal housing, at least a part of the terminal housing includes an inner layer and an outer layer, the inner layer is an aluminum layer or an aluminum alloy layer, the outer layer is a stainless steel layer, and the The aluminum layer or the aluminum alloy layer faces the inside of the terminal, the stainless steel layer faces the outside of the terminal, the thickness of the aluminum layer or the aluminum alloy layer is 0.3-1.0 mm, and the thickness of the stainless steel layer is 0.05-0.3 mm.

Optionally, the aluminum layer or aluminum alloy layer has a thickness of 0.5-0.9 mm, and the stainless steel layer has a thickness of 0.1-0.2 mm.

The stainless steel of the stainless steel layer includes at least one of 304 stainless steel, 301 stainless steel or 316 stainless steel. The aluminum alloy of the aluminum alloy layer includes at least one of A1050, A5052, and A6063.

Optionally, the inner layer and the outer layer are bonded together by molecular force through pressing.

Optionally, a cupping value of a region including the inner layer and the outer layer on the terminal housing is greater than or equal to 6 mm.

Optionally, the surface Vickers hardness of the stainless steel layer is greater than or equal to 300.

Optionally, the pullout strength of the region of the terminal shell including the inner layer and the outer layer is greater than or equal to 200 MPa.

Optionally, an elongation rate of a region of the terminal casing including the inner layer and the outer layer is greater than or equal to 20%.

Optionally, when the width of the test strip is 20mm, the 180-degree peeling force of the area including the inner layer and the outer layer on the terminal housing is greater than or equal to 100N.

Optionally, the terminal housing is a terminal back cover.

An embodiment of the present invention also provides a terminal, and the terminal includes the above-mentioned terminal casing.

The terminal housing provided by the embodiments of the present invention has a unique metal appearance effect of stainless steel, high glossiness of the appearance surface, light weight, simple manufacturing process and low cost, and is suitable for large-scale industrial production.

Description of drawings

Fig. 1 is the structural representation of composite metal material in the embodiment of the present invention;

Fig. 2 is the schematic flow chart of the press-fit preparation process of the composite metal material in the embodiment of the present invention;

Fig. 3 is a process flow chart of the mobile phone rear case in an embodiment of the present invention;

Fig. 4 is the physical photo of the mobile phone rear case prepared in one embodiment of the present invention;

Fig. 5 is a process flow diagram of a mobile phone rear case in another embodiment of the present invention;

6 is a schematic cross-sectional view of a mobile phone rear case prepared in another embodiment of the present invention;

Fig. 7 is a schematic diagram of the front structure of the mobile phone rear case prepared in another embodiment of the present invention;

Fig. 8 is a schematic diagram of the reverse structure of the mobile phone rear case prepared in another embodiment of the present invention;

FIG. 9 is an exploded diagram of a terminal provided by an embodiment of the present invention.

detailed description

The embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

An embodiment of the present invention provides a terminal casing. At least a portion of the terminal housing includes an inner layer and an outer layer. The inner layer is an aluminum layer or an aluminum alloy layer, that is, the inner layer is made of aluminum or an aluminum alloy. The outer layer is a stainless steel layer, that is, the outer layer is made of stainless steel. When the terminal housing is installed on the terminal, the inner layer faces the inside of the terminal, and the outer layer faces the outside of the terminal. The thickness of the inner layer is 0.3-1.0 mm, and the thickness of the outer layer is 0.05-0.3 mm.

The stainless steel layer faces the outside of the terminal, that is, the stainless steel layer is on the outer surface side of the terminal casing, that is, the user can directly touch the stainless steel layer when using the terminal.

In an embodiment of the present invention, at least a part or all of the terminal housing is made of composite metal material. Specifically, as shown in FIG. 1 , it is a schematic structural diagram of a composite metal material in an embodiment of the present invention, and the composite metal material includes an aluminum or aluminum alloy layer 11 and a stainless steel layer 12 . The terminal housing provided by the embodiments of the present invention is partly or entirely made of composite metal materials, and the stainless steel layer faces the outside of the terminal, that is, the stainless steel side is used as the outer surface of the terminal housing, and the aluminum or aluminum alloy side is used as the inner surface of the terminal housing , so that the unique appearance effect of stainless steel can be obtained, and the weight of the terminal shell can be ensured to be light.

In an optional embodiment of the present invention, the thickness of the aluminum layer or aluminum alloy layer is 0.5-0.9 mm, the thickness of the stainless steel layer is 0.1-0.2 mm, further, the thickness of the aluminum layer or aluminum alloy layer It can be 0.6-0.8mm or 0.7mm, and the thickness of the stainless steel layer can be 0.15mm. The composition ratio of the aluminum or aluminum alloy layer and the stainless steel layer can be determined according to actual requirements.

In the embodiment of the present invention, the stainless steel layer can be at least one of 304 stainless steel, 301 stainless steel or 316 stainless steel, specifically the following types of stainless steel can be used, such as SUS304, SUS301, SUS316, but not limited to the above-mentioned models. The aluminum layer or aluminum alloy layer can be made of the following types of materials, such as 1050 aluminum plate, 5052 aluminum plate, and 6063 aluminum plate, but not limited to the above models. Among them, 1050 aluminum plate is generally pure aluminum plate, 5052 aluminum plate and 6063 aluminum plate are aluminum alloy plate.

In an embodiment of the present invention, the aluminum layer or the aluminum alloy layer and the stainless steel layer are closely combined by molecular force through pressing. When the test sample width is 20mm, the 180° peeling force of the region made of composite metal material on the terminal housing is greater than or equal to 100N (N), for example, the peeling force can be 110N, 120N, 130N, etc.

In the embodiment of the present invention, in the region made of composite metal material on the terminal shell, the cupping value protruding from the side of the stainless steel layer or from the side of the aluminum layer or aluminum alloy layer is greater than or equal to 6 mm, specifically It can be 6-15mm, further 6-12mm.

In the embodiment of the present invention, the surface Vickers hardness of the stainless steel layer is greater than or equal to 300, specifically 300-1800, further 800-1500.

In the embodiment of the present invention, the pull-out strength of the region made of composite metal material on the terminal housing is greater than or equal to 200 MPa (MPa), specifically 200-900 MPa, and further 300-600 MPa. The elongation of the region made of composite metal material is greater than or equal to 20%, specifically 20%-60%, and further 30%-55%.

In the implementation manner of the present invention, the terminal shell may be a terminal back cover, such as a mobile phone back cover.

As shown in Figure 2, in the embodiment of the present invention, the pressing preparation process of the composite metal material is as follows: provide stainless steel raw material 1 and aluminum or aluminum alloy raw material 2, and press the above two raw materials into the The composite metal material precursor 3 is obtained together, and then the composite metal material precursor 3 is subjected to heat treatment, after the heat treatment is completed, the surface is planarized, and finally the composite metal material 4 of the required size is obtained by cutting to prepare the terminal shell . Optionally, the stainless steel raw material has a thickness in the range of 0.1-0.5 mm, and the aluminum or aluminum alloy raw material has a thickness in the range of 0.3-10 mm.

In the embodiment of the present invention, the terminal shell can be prepared by the following process: first, the composite metal material of the required size is processed into the shape of the pre-prepared terminal shell by stamping, CNC and other processing techniques, and then the special surface of stainless steel is realized through surface treatment. Metal appearance decoration effect, get the terminal housing. The surface treatment may be at least one of polishing, sandblasting, wire drawing, PVD (physical vapor deposition, physical vapor deposition) coating and the like.

Specifically, as shown in FIG. 3, in the embodiment of the present invention, taking the mobile phone rear case as an example, when the mobile phone rear case is all made of composite metal materials, the preparation process may specifically include the following steps:

S31. Provide composite metal materials: provide composite metal materials of the required size in the form of veneers. The composite metal materials are composed of stainless steel layers and aluminum alloy layers that are laminated and combined with each other; the thickness of the aluminum layer or aluminum alloy layer of the composite metal materials is 0.3-1.0mm, the thickness of the stainless steel layer is 0.05-0.3mm; the composition ratio of stainless steel and aluminum or aluminum alloy can be formulated according to actual needs, for example, in a specific embodiment, the thickness of the stainless steel layer is 0.1mm, the aluminum alloy The thickness is 0.5mm;

S32, processing shape: using stamping and CNC processing technology to process the composite metal material prepared in step S31 into the shape of the mobile phone rear shell;

S33, stainless steel surface polishing: polishing the stainless steel surface to achieve a high-gloss mirror effect;

S34. Coating on stainless steel polished surface: Coating the high-gloss mirror surface of stainless steel by evaporation or sputtering to protect the mirror surface of stainless steel, and finally get the mobile phone back shell product. Refer to FIG. 4 for the actual mobile phone rear case obtained in the embodiment of the present invention. The coating layer can be transparent or colored to bring more decorative effects to the mirror surface.

In other embodiments of the present invention, after polishing, the unique metal appearance decoration effect of stainless steel can also be achieved by further appearance treatment methods such as sandblasting, wire drawing, and PVD coating.

In another embodiment of the present invention, as shown in FIG. 5, taking the back shell of a mobile phone as an example, when the back shell of the mobile phone is partly made of composite metal materials and partly made of plastic, the manufacturing process may specifically include the following steps:

S51. Provide composite metal materials: provide composite metal materials of the required size in the form of veneers. The composite metal materials are composed of stainless steel layers and aluminum alloy layers laminated and combined with each other; the thickness of the aluminum layer or aluminum alloy layer of the composite metal materials is 0.3-1.0mm, the thickness of the stainless steel layer is 0.05-0.3mm; the composition ratio of stainless steel and aluminum or aluminum alloy can be formulated according to actual needs, for example, in a specific embodiment, the thickness of the stainless steel layer is 0.1mm, the aluminum alloy The thickness is 0.5mm;

S52, processing shape and plastic filling shape: use stamping and CNC processing technology to process the composite metal material prepared in step S51 into the shape of the mobile phone rear shell and the shape of the subsequent structure combined with plastic (that is, the plastic filling shape); in the embodiment of the present invention , After processing the shape of the back shell of the mobile phone, the surface micropore treatment can also be performed to form countless nanoscale micropores on the surface of the composite metal material, which is beneficial to the subsequent plastic injection molding;

S53. Plastic injection molding: inject plastic into the combined structure reserved in step S52 to complete plastic injection molding; wherein the plastic can specifically be polybutylene terephthalate;

S54. Processed shape: after the plastic injection molding is completed, the redundant composite metal material and plastic parts are milled off again through CNC processing to obtain the required structural part shape;

S55, Stainless steel and plastic surface polishing: Polish the stainless steel surface and the plastic on the stainless steel side to achieve a high-gloss mirror effect;

S56, stainless steel and plastic polished surface coating: Coating the high-gloss mirror surface of stainless steel and plastic by means of evaporation or sputtering to protect the mirror surface of stainless steel, and finally get the mobile phone back shell product.

FIG. 6 is a schematic cross-sectional view of the mobile phone rear case obtained in this embodiment. The back shell of the mobile phone is composed of composite metal material 10 and plastic 20 , and the composite metal material 10 includes an inner layer (aluminum or aluminum alloy layer) 11 and an outer layer (stainless steel layer) 12 . Wherein, the surface of the stainless steel layer 12 is a high-gloss mirror surface, and a protective coating 30 is provided on the high-gloss mirror surface. Fig. 7 and Fig. 8 are the structural representations of the front side (that is, the side facing the outside of the mobile phone) and the back side (that is, the side facing the interior of the mobile phone) of the mobile phone rear shell prepared in this embodiment respectively; Direct contact with one side, the reverse side is the inner surface that can be seen when the back case of the phone is removed from the phone.

The embodiment of the present invention can be applied to any electronic device with metal appearance structural parts, not limited to the smart phone structural parts, and the application method is the same as that of the smart phone.

Relevant parts among the various embodiments of the present invention may refer to each other.

As shown in FIG. 9 , an embodiment of the present invention also provides a terminal, specifically a mobile phone, including a display device 110 , a middle frame of the mobile phone and a main board 120 , and a metal rear case 130 . The display device 110 is electrically connected to the motherboard. The motherboard integrates various processors, memories, sensors, circuit modules and the like. The metal rear case 130 is located on a side away from the display device 110 , and the metal rear case 130 is located outside the terminal. The metal rear case 130 is the mobile phone rear case prepared above in the embodiment of the present invention, and part or all of the mobile phone rear case is made of composite metal material.

It should be noted that, according to the disclosure and elaboration of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above implementation manners. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some equivalent modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims (12)

1. A terminal housing, characterized in that at least a part of the terminal housing includes an inner layer and an outer layer, the inner layer is an aluminum layer or an aluminum alloy layer, the outer layer is a stainless steel layer, and the aluminum layer or The aluminum alloy layer faces the inside of the terminal, the stainless steel layer faces the outside of the terminal, the thickness of the aluminum layer or the aluminum alloy layer is 0.3-1.0 mm, and the thickness of the stainless steel layer is 0.05-0.3 mm. 2 . The terminal housing according to claim 1 , wherein the thickness of the aluminum layer or aluminum alloy layer is 0.5-0.9 mm, and the thickness of the stainless steel layer is 0.1-0.2 mm. 3. The terminal housing according to claim 1 or 2, wherein the stainless steel of the stainless steel layer comprises at least one of 304 stainless steel, 301 stainless steel or 316 stainless steel. 4. The terminal housing according to any one of claims 1-3, wherein the aluminum or aluminum alloy of the aluminum layer or the aluminum alloy layer comprises at least one of 1050 aluminum plate, 5052 aluminum plate or 6063 aluminum plate. 5. The terminal housing according to any one of claims 1-4, wherein the inner layer and the outer layer are bonded together by molecular force through pressing. 6. The terminal housing according to any one of claims 1-5, wherein a cupping value of a region including the inner layer and the outer layer on the terminal housing is greater than or equal to 6 mm. 7. The terminal housing according to any one of claims 1-6, wherein the surface Vickers hardness of the stainless steel layer is greater than or equal to 300. 8. The terminal casing according to any one of claims 1-7, wherein the pullout strength of the region including the inner layer and the outer layer on the terminal casing is greater than or equal to 200 MPa. 9. The terminal housing according to any one of claims 1-8, wherein the elongation rate of the area of the terminal housing including the inner layer and the outer layer is greater than or equal to 20%. 10. The terminal housing according to any one of claims 1-9, characterized in that, when the test sample width is 20mm, the 180-degree peeling force of the area including the inner layer and the outer layer on the terminal housing is greater than Or equal to 100N. 11. The terminal housing according to any one of claims 1-10, wherein the terminal housing is a terminal back cover. 12. A terminal, characterized in that the terminal comprises the terminal casing according to any one of claims 1-11.