Enclosure and electronic device

Abstract

The present invention relates to the technical field of enclosures, and provides an enclosure and an electronic device. The enclosure is applied to a mobile electronic terminal, and comprises: an inner enclosure, the inner enclosure comprising an inner enclosure body and an accommodating recess formed by recessing a side of the inner enclosure body; and an outer enclosure, the outer enclosure being in an annular shape, and the outer enclosure extending around the peripheral side of the inner enclosure body and being fixed to the inner enclosure body. The outer enclosure is made of a titanium alloy material; the inner enclosure body is made of a metal material other than the titanium alloy material; the outer enclosure and the inner enclosure body are fixed and formed into an integrated structure by means of the hot isostatic pressing process. The compactness, uniformity and performance of the enclosure of the present invention can be improved by means of the hot isostatic pressing process.

Description

Casings and electronic equipment Technical Field

[0001] The present invention relates to the technical field of casings, and in particular to a casing and an electronic device. Background Art

[0002] Titanium alloy is a lightweight, high-strength, and corrosion-resistant material with a density of 4.51g / cm2, which is only 60% of that of steel. Using titanium alloy for the casing can give it high strength and excellent corrosion resistance, and can also enhance its texture and quality, making it more refined and stylish, while also offering more choices for appearance. Using other lightweight and inexpensive metal materials for the inner cavity of the casing can significantly reduce the processing time and overall weight of the casing, while also reducing costs. For example, aluminum alloy, with its corrosion resistance, dense oxide film, good ductility, and processing properties, can be reused. Using recyclable metal materials like aluminum for the inner cavity of the casing can also achieve greater cost savings and environmental protection.

[0003] There are two main casing processing technologies in the related art. The first involves forging the entire casing from titanium plates, then processing it through CNC (Computer Numerical Control) machining, 3D printing, MIM (Metal Injection Molding), and other methods. This processing technology suffers from high costs, heavy overall weight, and significant waste. The second involves thermally cladding titanium alloy and aluminum materials, followed by forging, CNC machining, welding, and injection molding to form the frame. The frame is then CNC machined, T-processed, injection molded, and post-processed. While this processing technology can make the casing relatively thin and light, it still falls short of ideal thinness, has high overall costs, and suffers from poor surface finish and waterproofing. In other words, the casing processing technologies in the related art suffer from low density, poor uniformity, and poor performance (hardness, yield strength, tensile strength, and elongation).

[0004] Therefore, it is necessary to provide a new casing to solve the above problems. Technical issues

[0005] The object of the present invention is to provide a housing and an electronic device to solve the problems of low density, poor uniformity and poor performance of the housing in the related art. Technical Solutions

[0006] In a first aspect, the present invention provides a housing for a mobile electronic terminal, comprising:

[0007] An inner shell, the inner shell comprising an inner shell and a receiving groove formed by a depression on one side of the inner shell;

[0008] an outer shell, the outer shell being annular, extending around the circumference of the inner shell and being fixed to the inner shell;

[0009] The outer shell is made of a titanium alloy material, and the inner shell is made of a metal material other than a titanium alloy material; the outer shell and the inner shell are fixedly formed into an integral structure by a hot isostatic pressing process.

[0010] Preferably, the heating temperature of the hot isostatic pressing process is 1000-2000° C., and the working pressure is 200 MPa.

[0011] Preferably, the circumferential side of the inner shell body protrudes and extends to form a stepped portion; the inner circumferential side of the outer shell body is recessed at a position corresponding to the stepped portion to form a recessed portion; and the stepped portion extends into the recessed portion.

[0012] Preferably, the stepped portions and the recessed portions include a plurality of them respectively, the plurality of stepped portions are arranged at intervals along the circumference of the inner shell, and the plurality of recessed portions are arranged at intervals along the inner circumference of the outer shell, and each of the stepped portions extends into a corresponding recessed portion.

[0013] Preferably, the plurality of step portions are arranged at equal intervals.

[0014] Preferably, the outer shell includes a first outer shell arranged around a portion of the circumference of the inner shell and a second outer shell arranged around the other portion of the circumference of the inner shell; two gaps are formed at the connection between the two ends of the first outer shell and the two ends of the second outer shell; two protruding and extending reinforcement parts are respectively provided on opposite sides of the inner shell; the two reinforcement parts respectively pass through the two gaps and are fixed to the outer shell.

[0015] Preferably, the reinforcement portion includes two first protrusions parallel to each other formed by protruding extensions from the circumferential side of the inner shell and a second protrusion connecting the middle positions of the two first protrusions, and the first protrusion and the second protrusion together form two grooves located on opposite sides of the second protrusion; the two ends of the first outer shell and the two ends of the second outer shell are respectively provided with insertion portions formed by protruding and extending outward, and the two insertion portions located at the adjacent ends of the first outer shell and the second outer shell are respectively clamped in the two grooves of the corresponding same reinforcement portion.

[0016] Preferably, the shell is made of aluminum metal material; a transition layer is provided at the connection between the outer shell and the inner shell; the portion of the transition layer close to the shell is made of aluminum metal material, and the portion of the transition layer close to the outer shell is made of titanium alloy material.

[0017] In a second aspect, the present invention provides an electronic device, wherein the device casing is the casing described above. Beneficial effects

[0018] Compared with the related art, the outer shell of the casing in the present invention is made of titanium alloy material, and the inner shell is made of metal material other than titanium alloy material, and the outer shell and the inner shell are respectively processed and formed by hot isostatic pressing process, so that the density, uniformity and performance of the casing can be improved by hot isostatic pressing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0020] FIG1 is a schematic diagram of the three-dimensional structure of a housing provided by an embodiment of the present invention;

[0021] FIG2 is a schematic diagram of the exploded structure of a housing provided by an embodiment of the present invention;

[0022] FIG3 is a schematic diagram of material proportions of a partial cross section of a casing provided by an embodiment of the present invention.

[0023] In the figure, 100, casing; 1, inner casing; 11, inner casing; 111, stepped portion; 112, reinforcing portion; 1121, first protruding portion; 1122, second protruding portion; 1123, groove; 12, accommodating groove; 2, outer casing; 21, recessed portion; 22, first outer casing; 23, second outer casing; 24a, first inserting portion; 24b, second inserting portion; 3, transition layer. Modes for Carrying Out the Invention

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0025] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] It should be noted that the expressions "upper," "lower," "left," and "right" mentioned in the embodiments of the present invention are described with reference to the placement states in the accompanying drawings and should not be construed as limiting embodiments of the present invention. Furthermore, it should be understood that, in the text, when referring to an element as being "above" or "below" another element, it is possible that the element is directly "above" or "below" the other element, or it is possible that the element is "above" or "below" the other element through an intermediate element.

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] Example 1

[0029] An embodiment of the present invention provides a casing 100 for use in a mobile electronic terminal, as shown in Figures 1 and 2, which includes an inner casing 1 and an outer casing 2; the inner casing 1 includes an inner casing 11 and a receiving groove 12 formed by a depression on one side of the inner casing 11; the outer casing 2 is annular, and the outer casing 2 surrounds the circumference of the inner casing 11 and is fixed to the inner casing 11; the outer casing 2 is made of a titanium alloy material, and the inner casing 11 is made of a metal material other than a titanium alloy material; the outer casing 2 and the inner casing 11 are respectively fixed and formed into an integral structure through a hot isostatic pressing process.

[0030] Hot isostatic pressing (HIP), also known as hot isostatic pressing (HIP), is a high-temperature, high-pressure production technology that uses high-pressure inert gas in a sealed container as the pressure medium. In this embodiment, the HIP process uses a heating temperature of 1000-2000°C and an operating pressure of 200 MPa.

[0031] Specifically, the housing 2 may be an integrally formed annular structure, or an annular structure formed by multiple sections.

[0032] In this embodiment, the receiving slots 12 include a plurality of receiving slots 12, and the plurality of receiving slots 12 are arranged at intervals. Of course, according to actual needs, only one receiving slot 12 can also be designed.

[0033] The circumference of the inner shell 11 protrudes and extends to form a stepped portion 111 ; the inner circumference of the outer shell 2 is recessed at a position corresponding to the stepped portion 111 to form a recessed portion 21 ; the stepped portion 111 extends into the recessed portion 21 .

[0034] In this embodiment, the stepped portions 111 and the recessed portions 21 are each provided at intervals along the circumference of the inner housing 11, and the recessed portions 21 are provided at intervals along the inner circumference of the outer housing 2. Each stepped portion 111 extends into a corresponding recessed portion 21. This design increases the fixed area between the inner housing 11 and the outer housing 2 through the stepped portions 111 and the recessed portions 21, thereby improving the connection strength between the inner housing 11 and the outer housing 2. To increase the connection strength between the inner housing 11 and the outer housing 2, the stepped portions 111 are arranged at equal intervals. Of course, the stepped portions 111 can also be arranged at unequal intervals according to actual needs.

[0035] In this embodiment, the outer shell 2 includes a first outer shell 22 disposed around a portion of the circumference of the inner shell 11, and a second outer shell 23 disposed around the remaining circumference of the inner shell 11. Two gaps are formed at the junctions between the ends of the first outer shell 22 and the ends of the second outer shell 23. Because the outer shell 2 is divided into the first outer shell 22 and the second outer shell 23, gaps exist at both ends of the first outer shell 22 and the corresponding ends of the second outer shell 23. This arrangement allows for better securing of the outer shell 2 to the circumference of the inner shell 1 and facilitates processing.

[0036] Specifically, two protruding and extending reinforcement portions 112 are respectively provided on opposite sides of the inner shell 11 ; the two reinforcement portions 112 pass through the two gaps respectively and are fixed to the outer shell 2 .

[0037] In this embodiment, the reinforcement portion 112 includes two mutually parallel first protrusions 1121 extending from the circumference of the inner shell 11, and a second protrusion 1122 connecting the two first protrusions 1121 midway between the two first protrusions 1121. The first protrusions 1121 and the second protrusions 1122 together form two grooves 1123 located on opposite sides of the second protrusion 1122. Both ends of the first outer shell 22 and the second outer shell 23 are provided with outwardly protruding insertion portions. The two insertion portions located at adjacent ends of the first and second outer shells 22 and 23 are respectively secured within the corresponding two grooves 1123 of the same reinforcement portion 112. This design increases the fixing area between the inner shell 11 and the outer shell 2, thereby enhancing the connection strength between the inner shell 11 and the outer shell 2.

[0038] The insertion portion at the end of the first outer shell 22 is a first insertion portion 24a, which extends to the groove 1123 on one side of the second protrusion 1122; the insertion portion at the end of the second outer shell 23 is a second insertion portion 24b, which extends to the groove 1123 on the other side of the second protrusion 1122.

[0039] In this embodiment, as shown in Figure 3 , the inner housing 11 is made of aluminum. A transition layer 3 is interposed at the junction between the outer housing 2 and the inner housing 11. The portion of the transition layer 3 near the inner housing 11 is made of aluminum, while the portion near the outer housing 2 is made of a titanium alloy. This design enhances the connection strength between the outer housing 2 and the inner housing 11. A is a titanium alloy, and B is aluminum.

[0040] Specifically, the production process of the casing 100 in this embodiment is as follows: titanium powder production - mold forming - the first hot isostatic pressing process - the first heat treatment - coating treatment or hole treatment - mold installation - loading of metal materials other than aluminum powder or titanium alloy materials - the second hot isostatic pressing process - the second heat treatment - CNC glue grabbing structure treatment - nanopore treatment professional line body - injection molding - CNC important structure treatment - anodizing treatment - polishing treatment - surface treatment - PVD (physical vapor deposition) treatment - assembly - inspection - finished product shipment; wherein the first hot isostatic pressing process is for processing the outer shell 2, and the second hot isostatic pressing process is for processing the inner shell 1.

[0041] The titanium-aluminum plate thermal cladding process utilizes TA2 or TA4 alloys thermally bonded with recycled 6-series aluminum. Its performance characteristics include a hardness of 350 HV1, a yield strength greater than or equal to 850 MPa, a tensile strength greater than or equal to 950 MPa, and an elongation greater than or equal to 15%. Its appearance is sandblasted and brushed, resulting in high cost. The mid-plate portion requires welding and is prone to cracking. The hot isostatic pressing process employed in this embodiment utilizes TA2, TC4, or a high-strength aluminum alloy bonded with high-strength aluminum. Its performance characteristics include a hardness of 350-400 HV1 (high density), a yield strength greater than or equal to 950 MPa, a tensile strength greater than or equal to 1050 MPa, and an elongation greater than or equal to 15%. Its appearance is sandblasted, brushed, and mirror-polished. Its cost is moderate, and it offers good density, eliminating the need for welding, minimizing the risk of cracking, and providing excellent airtightness.

[0042] In this embodiment, the outer shell 2 of the casing 100 is made of a titanium alloy material, and the inner shell 11 is made of a metal material other than a titanium alloy material, and the outer shell 2 and the inner shell 11 are respectively formed by a hot isostatic pressing process, so that the density, uniformity and performance of the casing 100 can be improved by the hot isostatic pressing process.

[0043] In addition, the housing 100 in this embodiment also has the following technical effects:

[0044] 1. The hot isostatic pressing composite solution can make the exterior material more precise, and the inner cavity can be processed into a complex 3D structure. It can also use lighter and thinner materials to make the housing 100 lighter and thinner.

[0045] 2. Good density, no pinholes, the surface can be made into high-gloss effect in addition to brushing and sandblasting to meet more needs of market consumers.

[0046] 3. The material production efficiency is high and it can be recycled, which improves the environmental protection rate and reduces environmental pollution.

[0047] 4. The structural design cost of the product shell used in 3C products (electronic products) such as mobile phones, tablets, watches, etc. is relatively low and more versatile.

[0048] 5. There is no need to use the die-cast middle plate for secondary welding in the middle, the overall rigidity is strong, and the problems of position falling off and breaking caused by the welding points of the die-cast middle plate are reduced.

[0049] 6. The overall processing cost is low, which reduces resource waste and improves production capacity and market application.

[0050] 7. Its comprehensive performance meets a wide range of requirements. It can achieve super corrosion resistance and high strength, and the inner cavity can use light and thin materials to design complex structures, reducing the overall weight.

[0051] 8. The above materials and processes have a wider range of applications. They can be used in complex and high-performance mobile phones, popular sports watches, and even ultra-thin tablets.

[0052] Example 2

[0053] An embodiment of the present invention provides an electronic device, wherein the device housing is the housing 100 in the first embodiment.

[0054] Electronic devices include mobile phones, watches, and tablets.

[0055] Since the electronic device in this embodiment includes the housing 100 in the first embodiment, it can also achieve the technical effects achieved by the housing 100 in the first embodiment, which will not be described in detail here.

[0056] It should be noted that the various embodiments described above with reference to the accompanying drawings are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Those skilled in the art should understand that any modifications or equivalent substitutions to the present invention that do not depart from the spirit and scope of the present invention are intended to be encompassed within the scope of the present invention. Furthermore, unless the context otherwise requires, words appearing in the singular include the plural form, and vice versa. Furthermore, unless otherwise specified, all or part of any embodiment may be used in combination with all or part of any other embodiment.

Claims

1. A housing, which is applied to a mobile electronic terminal, is characterized in that The housing includes: An inner housing, which includes an inner housing body and a receiving groove formed by a depression on one side of the inner housing body; An outer housing, which is annular, surrounds the circumferential side of the inner housing body and is fixed to the inner housing body; The outer housing is made of a titanium alloy material, and the inner housing body is made of a metal material other than the titanium alloy material; the outer housing and the inner housing body are fixed and formed into an integral structure by a hot isostatic pressing process.

2. The chassis according to claim 1, characterized in that, The heating temperature of the hot isostatic pressing process is 1000 - 2000 °C, and the working pressure is 200 MPa.

3. The chassis according to claim 1, characterized in that, A stepped portion protrudes and extends from the circumferential side of the inner housing body; a recessed portion is formed by a depression at a position corresponding to the stepped portion on the inner circumferential side of the outer housing; the stepped portion extends into the recessed portion.

4. The casing according to claim 3, characterized in that, There are multiple stepped portions and multiple recessed portions respectively. The multiple stepped portions are arranged at intervals along the circumferential side of the inner housing body, and the multiple recessed portions are arranged at intervals along the inner circumferential side of the outer housing. Each stepped portion extends into a corresponding one of the recessed portions.

5. The chassis according to claim 4, characterized in that, The multiple stepped portions are arranged at equal intervals.

6. The casing according to claim 1, characterized in that, The outer housing includes a first outer housing body arranged around a partial circumferential side of the inner housing body and a second outer housing body arranged around the other peripheral edge of the inner housing body; two gaps are formed at the connection positions of the two ends of the first outer housing body with the two ends of the second outer housing body respectively; two reinforcing portions protruding and extending are provided on the opposite sides of the inner housing body respectively; the two reinforcing portions respectively pass through the two gaps and are fixed to the outer housing.

7. The casing according to claim 6, wherein The reinforcing portion includes two first protruding portions protruding and extending parallel to each other from the circumferential side of the inner housing body and a second protruding portion connecting the middle positions of the two first protruding portions. The first protruding portions and the second protruding portion jointly enclose two grooves located on the opposite sides of the second protruding portion; insertion portions protruding and extending outward are respectively provided at the two ends of the first outer housing body and the two ends of the second outer housing body. The two insertion portions located at the adjacent ends of the first outer housing body and the second outer housing body are respectively clamped in the two grooves of a corresponding same reinforcing portion.

8. The chassis according to claim 1, characterized in that, The housing is made of an aluminum metal material; a transition layer is clamped at the connection position between the outer housing and the inner housing body; the part of the transition layer close to the housing is made of an aluminum metal material, and the part of the transition layer close to the outer housing is made of a titanium alloy material.

9. An electronic device, characterized in that, The device housing of the electronic device is the housing according to any one of claims 1 to 8.

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