Middle frame assembly and mobile terminal

Abstract

The utility model provides a middle frame assembly and a mobile terminal, the middle frame assembly comprises a first frame body and a second frame body, at least one of the first frame body and the second frame body is a die casting, and the first frame body surrounds the periphery of the second frame body; the first frame body is of an integrally-formed structure, the second frame body is provided with a non-machining face, a draft angle is formed between the side wall face of the second frame body and the non-machining face of the second frame body, the angle range of the draft angle is 90-110 degrees, and the thickness of the second frame body is larger than or equal to 0.8 mm and smaller than or equal to 1.5 mm. According to the technical scheme, the middle frame assembly is integrally formed, the structure is simple, the production efficiency is greatly improved, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of mobile terminals, and in particular to a middle frame assembly and a mobile terminal. Background Art

[0002] With the improvement of living standards, people have higher and higher aesthetic requirements for the appearance of various daily-used items (including mobile terminal products). The appearance of mobile terminal products has attracted widespread attention, and the use of metal materials in the shells of mid-to-high-end mobile terminal products has become a trend.

[0003] In the process of conceiving and implementing this application, the applicant found that there are at least the following problems: Due to the advantages of aluminum alloy such as low density, high thermal conductivity, and good plasticity, aluminum alloy is generally used as the metal material in the mobile terminal shell in the industry. It requires machining (CNC) and polishing, and dozens of processes are required to form the shape, and finally anodizing treatment is performed to obtain an aluminum alloy appearance shell that meets the product appearance requirements. Due to the need for machining and polishing, the metal shell processing of the mobile terminal has the problem of complex process and high cost.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] In view of the above technical problems, the present application provides a middle frame assembly and a mobile terminal, wherein the frame assembly is integrally formed with a simple structure, which greatly improves production efficiency and reduces production costs.

[0006] To solve the above technical problems, in a first aspect, the present application provides a middle frame assembly, comprising: a first frame body and a second frame body, at least one of the first frame body and the second frame body is a die casting, and the first frame body is arranged around the outer periphery of the second frame body;

[0007] The first frame is an integrally formed structure, the second frame has a non-machined surface, a draft angle is provided between the side wall surface of the second frame and the non-machined surface of the second frame, and the draft angle ranges from 90° to 110°.

[0008] Optionally, the thickness of the second frame is greater than or equal to 0.8 mm and less than or equal to 1.5 mm.

[0009] Optionally, the angle ranges from 93° to 95°.

[0010] Optionally, the second frame further comprises a receiving cavity and at least one isolating member, wherein the at least one isolating member is arranged at intervals along the first direction to isolate the receiving cavity into a plurality of cavities;

[0011] The first direction is one of the length direction of the second frame body and the width direction of the second frame body.

[0012] Optionally, the isolation member has a first isolation surface and a second isolation surface connected to each other, the extension direction of the first isolation surface is parallel to the extension direction of the non-processed surface of the second frame, and the second isolation surface is located between the first isolation surface and the non-processed surface of the second frame;

[0013] At least one of the second isolation surface and the first isolation surface and the second isolation surface and the non-processed surface of the second frame body has a first arc segment.

[0014] Optionally, the radius of the first arc segment is less than or equal to 0.5 mm.

[0015] Optionally, the radius of the first arc segment is greater than or equal to 0.1 mm.

[0016] Optionally, a groove is provided on the side wall of the second frame body, the notch of the groove is communicated with the accommodating cavity, at least two sound amplification holes are provided at the bottom of the groove, and the sound amplification holes penetrate through opposite sides of the side wall of the first frame body.

[0017] Optionally, the first frame body includes a first frame and a second frame, there are two first frames and two second frames, and the two first frames and the second frames are alternately arranged to form an installation cavity for installing the second frame body, and the length of the second frame is greater than the length of the first frame;

[0018] A second arc segment is provided at a connection between the first frame and the second frame, and the second arc segment faces the installation cavity.

[0019] Optionally, the first frame and the second frame are an integrally formed structure; or,

[0020] The first frame includes a connecting block and a plurality of first frame segments. The connecting block is arranged between two adjacent first frame segments to connect the two adjacent first frame segments.

[0021] In a second aspect, the present application provides a mobile terminal, including: a middle frame assembly as described above.

[0022] The present application provides a middle frame assembly and a mobile terminal, wherein the mobile terminal includes a middle frame assembly, and the middle frame assembly includes: a first frame body and a second frame body, wherein at least one of the first frame body and the second frame body is a die-casting, and the first frame body is arranged around the outer periphery of the second frame body; the first frame body is an integrally formed structure, the second frame body has a non-machined surface, and the thickness of the second frame body is greater than or equal to 0.8 mm and less than or equal to 1.5 mm; a draft angle is provided between the side wall surface of the second frame body and the non-machined surface of the second frame body, and the angle range of the draft angle is between 90° and 110°.

[0023] Through the above-mentioned arrangement, that is, the first frame body and the second frame body are arranged as an integral die-casting, for the CNC (Computer numerical control, CNC) processing in the prior art, the present application adopts die-casting, without the need for CNC processing, and thus the non-processed surface of the second frame body is a smooth surface without CNC knife marks, the middle frame assembly is integrally formed, the structure is simple, the production efficiency is greatly improved and the production cost is reduced, and an obtuse angle design is adopted between the side wall of the second frame body and the bottom wall of the second frame body, so that it is easy to demold during the manufacturing process, thereby improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0025] Figure 1 It is a structural schematic diagram of a middle frame assembly in an embodiment of the present application;

[0026] Figure 2 is a structural schematic diagram of a middle frame assembly from a first perspective in an embodiment of the present application;

[0027] Figure 3 for Figure 2 A partial enlarged view of point I in the middle;

[0028] Figure 4 for Figure 2 A partial enlarged view of position II in the middle;

[0029] Figure 5 is a structural schematic diagram of the middle frame assembly in the embodiment of the present application from a second viewing angle;

[0030] Figure 6 for Figure 5 A partial enlarged view of the part III in the middle;

[0031] Figure 7 is a schematic structural diagram of the second frame body in the middle frame assembly in an embodiment of the present application;

[0032] Figure 8 is a structural schematic diagram of another middle frame assembly in an embodiment of the present application;

[0033] Fig. 9 is a partial structural schematic diagram of another first frame body in the middle frame assembly in an embodiment of the present application;

[0034] Fig.10 is a structural schematic diagram of another first frame body in the middle frame assembly in an embodiment of the present application;

[0035] Fig.11 It is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application.

[0036] Description of labels:

[0037] 100-middle frame assembly; 110-first frame; 111-first frame; 112-second frame; 113-connecting block; 114-first frame segment; 120-second frame; 121-non-processed surface; 122-isolator; 1221-first isolation surface; 1222-second isolation surface; 130-groove; 140-sound expansion hole; 150-installation cavity;

[0038] 200-mobile terminal; 201-radio unit; 202-WiFi module; 203-audio output unit; 204-A / V input unit; 2041-graphics processor; 2042-microphone; 205-sensor; 206-display unit; 2061-display panel; 207-user input unit; 2071-touch panel; 2072-other input devices; 208-interface unit; 209-memory; 210-processor; 211-power supply.

[0039] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The above-mentioned drawings have shown clear embodiments of this application, which will be described in more detail later. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0040] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0041] It should be noted that, in this article, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element. Optionally, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context in the specific embodiment.

[0042] It should be understood that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0043] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0046] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0047] To facilitate understanding, the application scenarios to which the embodiments of the present application are applicable are first described below.

[0048] The middle frame assembly provided in the present application can be applied to a mobile terminal, and the mobile terminal can be a mobile terminal of various forms. For example, the mobile terminal described in the present application can include mobile terminals such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0049] The following description will be made by taking a mobile terminal as an example, and those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the construction according to the embodiments of the present application can also be applied to fixed-type terminals.

[0050] Based on the above-mentioned mobile terminal and the structure of the middle frame component in the mobile terminal, various embodiments of the present application are proposed.

[0051] Embodiment 1

[0052] Figure 1 is a structural diagram of a middle frame assembly in an embodiment of the present application, Figure 2 is a schematic structural diagram of a middle frame assembly from a first viewing angle in an embodiment of the present application, Figure 3 for Figure 2 The local enlarged view of point I in the middle, Figure 4 for Figure 2 A partial enlarged view of II in the middle. Figure 5 is a structural diagram of the middle frame assembly in the embodiment of the present application from a second viewing angle, Figure 6 for Figure 5 A partial enlarged view of point III in the middle. Figure 7 It is a schematic diagram of the structure of the second frame in the middle frame assembly in an embodiment of the present application.

[0053] like Figures 1 to 7As shown, an embodiment of the present application provides a middle frame assembly 100, including: a first frame body 110 and a second frame body 120, at least one of the first frame body 110 and the second frame body 120 is a die-casting, and the first frame body 110 is arranged around the outer periphery of the second frame body 120; optionally, the first frame body 110 is an integrally formed structure, the second frame body 120 has a non-machined surface 121, and a draft angle is provided between the side wall surface of the second frame body 120 and the non-machined surface 121 of the second frame body 120, the angle range of the draft angle is between 90°-110°, and the thickness of the second frame body 120 is greater than or equal to 0.8 mm and less than or equal to 1.5 mm.

[0054] Optionally, the mobile terminal is described by taking a mobile phone as an example, wherein the frame assembly 100 can be used to support components such as a screen, a circuit board, and a battery in the mobile phone.

[0055] Optionally, the die-casting process casts the zinc alloy material into a substrate, which may be at least one of the first frame body 110 and the second frame body 120 in the middle frame assembly 100. Die-casting is a precision casting method that uses high pressure to force molten metal into a metal mold with a complex shape, and the zinc alloy material can be die-cast into a precision part with a complex shape, thin wall, and smooth surface, which is convenient for surface treatment on the one hand, and has good room temperature mechanical properties and wear resistance on the other hand.

[0056] Optionally, when the thickness of the second frame body 120 is less than 0.8 mm, it needs to be thickened by CNC processing.

[0057] Optionally, the non-machined surface 121 of the second frame body 120, that is, the plane where the bottom wall of the second frame body 120 is located, is a horizontal plane, and the plane where the side wall surface of the second frame body 120 is located is inclined relative to the bottom wall of the second frame body 120, and the draft angle between the two can be 90°, 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99°, 100°, 101°, 102°, 103°, 104°, 105°, 106°, 107°, 108°, 109° or 110°, or any value in between, so that the second frame body 120 can be separated from the mold after the production is completed.

[0058] In some examples, the first frame 110 may be a metal member, and its material may include one or more of copper, iron, aluminum, tin, and lead.

[0059] In other examples, the first frame 110 may also be made of plastic. During injection molding, the molten plastic is injected into the plastic product mold under pressure, and the desired plastic part is obtained by cooling and molding. Optionally, the material of the first frame 110 is not too limited in the embodiment of the utility model.

[0060] In some examples, the materials of the first frame 110 and the second frame 120 are the same or different, and the embodiments of the present application do not limit this in detail.

[0061] In some examples, the first frame 110 is a high-silicon aluminum alloy plate; the second frame 120 is a low-silicon aluminum alloy plate; the high-silicon aluminum alloy has good fluidity, which makes the first frame 110 easier to form, reduces production time, and improves product production efficiency.

[0062] In other examples, the first frame 110 is die-casted from aluminum alloy, titanium alloy or magnesium alloy, among which aluminum alloy has the best processing performance, fast thermal conductivity, good heat dissipation performance, many models and wide sources; while titanium alloy or magnesium alloy are mostly used in higher-end mobile phones and are relatively expensive.

[0063] Optionally, the second frame body 120 is an integrally die-cast second frame body 120, and the die-cast second frame body 120 is formed by die-casting of aluminum material.

[0064] In some embodiments, the middle frame assembly 100 provided in the present application, the first frame body 110 and the second frame body 120 can be made of two different metals, and the first frame body 110 can be made of a metal with high mechanical strength and good fluidity, thereby ensuring the mechanical strength of the first frame body 110 and extending the service life of the product.

[0065] Through the above-mentioned arrangement, that is, the first frame body 110 and the second frame body 120 are arranged as an integral die-casting, for the CNC (Computer numerical control, CNC) processing in the prior art, the present application adopts die-casting, without the need for CNC processing, and thus the non-processed surface 121 of the second frame body is a smooth surface without CNC knife marks, and the structure is simple, which reduces the processing time and material loss, greatly improves the production efficiency and reduces the production cost; the die-casting process is adopted for integral die-casting, and the overall weight of the die-casting is light, and an obtuse angle design is adopted between the side wall of the second frame body 120 and the bottom wall of the second frame body 120, so that it is easy to demould during the manufacturing process, thereby improving the production efficiency.

[0066] The composition of the die-cast aluminum alloy in the embodiment of the present application is determined by comprehensively considering the contribution of each chemical element to the comprehensive performance indicators of the alloy (including fluidity, strength, toughness, crack tendency, etc.). Through the combined action of the above-mentioned specific contents of each element, various properties are balanced, thereby obtaining a die-cast aluminum alloy with excellent comprehensive performance.

[0067] Optionally, the angle range is between 93° and 95°. This arrangement, on the one hand, facilitates the separation of the second frame 120 from the mold after the second frame 120 is manufactured, and on the other hand, can ensure the appearance of the second frame 120, thereby improving the aesthetics of the second frame 120 and the integral die-casting with the first frame 110.

[0068] like Figures 1 to 7 As shown, optionally, the second frame 120 also has a accommodating cavity and at least one isolating member 122, and the at least one isolating member 122 is arranged at intervals along the first direction to isolate the accommodating cavity into a plurality of cavities, and the cavities are used to install circuit boards. Optionally, the first direction is one of the length direction of the second frame 120 and the width direction of the second frame 120.

[0069] Optionally, the accommodating cavity is used to accommodate a circuit board, and the first frame body 110 and the second frame body 120 are formed by die-casting and then installed.

[0070] In some embodiments, there are two isolation members 122, which are spaced apart along the length direction of the second frame 120, and the isolation members 122 extend along the width direction of the second frame 120 to isolate the accommodating cavity into multiple cavities, which respectively install the main board, sub-board and other structures of the circuit board.

[0071] In other embodiments, there are two isolation members 122, which are spaced apart along the width direction of the second frame 120, and the isolation members 122 are extended along the length direction of the second frame 120 to isolate the accommodating cavity into multiple cavities, which respectively install the main board, sub-board and other structures.

[0072] In some embodiments, the second frame 120 and the isolation member 122 are integrally formed, which can ensure that the second frame 120 and the isolation member 122 are integrally formed and manufactured and are inseparable structures. On the one hand, the number of parts used can be reduced, the difficulty of assembly and the requirements for assembly accuracy can be reduced, and the process of welding the second frame 120 and the isolation member 122 is omitted, thereby improving assembly efficiency.

[0073] On the other hand, the overall rigidity of the second frame body 120 can be improved, the possibility of looseness between the second frame body 120 and the isolation member 122 can be reduced, and the structural strength is relatively high.

[0074] like Figures 2 to 7 As shown, optionally, the isolation member 122 has a first isolation surface 1221 and a second isolation surface 1222 connected to each other, the extension direction of the first isolation surface 1221 is parallel to the extension direction of the non-processed surface 121 of the second frame 120, and the second isolation surface 1222 is located between the first isolation surface 1221 and the non-processed surface 121 of the second frame 120;

[0075] At least one of the second isolation surface 1222 and the first isolation surface 1221 and the second isolation surface 1222 and the non-processed surface 121 of the second frame body 120 has a first arc segment.

[0076] Optionally, there may be two second isolation surfaces 1222 , the two second isolation surfaces 1222 are respectively located between the first isolation surfaces 1221 , and each second isolation surface 1222 is connected to the non-processed surface 121 of the second frame 120 .

[0077] In some embodiments, there is a first arc segment between the second isolation surface 1222 and the first isolation surface 1221, and there is also a first arc segment between the second isolation surface 1222 and the non-processed surface 121 of the second frame 120, wherein the design of the first arc segment enables the metal isolation member 122 to avoid damage to the circuit board or other structures after production is completed.

[0078] In some embodiments, the first arc segment faces the accommodating cavity, that is, the four corners of each cavity are arc-shaped transition corners, and the arc-shaped transition corners are the first arc segment.

[0079] Optionally, the radius of the first arc segment is less than or equal to 0.5 mm.

[0080] Optionally, the radius of the first arc segment is greater than or equal to 0.1 mm.

[0081] Optionally, the size of the first arc segment is set to match the size of the mold on the one hand, and to facilitate subsequent processing with other structures on the other hand, thereby avoiding damage to the circuit board or other structures.

[0082] In some embodiments, the radius of the first arc segment may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm or 0.5 mm or other values.

[0083] like Figures 2 to 6 As shown, optionally, a groove 130 is opened on the side wall of the second frame body 120 , the notch of the groove 130 is connected to the accommodating cavity, and a plurality of sound expansion holes 140 are opened at the bottom of the groove 130 , and the sound expansion holes 140 pass through the opposite sides of the side wall of the first frame body 110 .

[0084] The provision of the groove 130 in this embodiment facilitates the installation of the speaker. The groove 130 provided in this application enables the speaker to fit more closely to the sound expansion hole 140 after installation, thereby facilitating the propagation of sound.

[0085] In some embodiments, the notch of the groove 130 is configured as an arc, so that it is more convenient to install the speaker later and it can also avoid scratches and damages to the speaker.

[0086] In some embodiments, the depth of the groove 130 is greater than or equal to 0.1 mm. Compared with the existing CNC processing, the depth of the groove 130 is controllable, and the depth of the groove 130 is greater than the depth of CNC processing, so that the speaker and the sound expansion hole 140 fit better, reducing the sound output distance and improving the sound effect.

[0087] Figure 8 is a schematic diagram of the structure of another middle frame assembly in an embodiment of the present application, such as Figure 8 As shown, optionally, the first frame body 110 and the second frame body 120 are an integrally formed structure.

[0088] Optionally, the materials used for the first frame body 110 and the second frame body 120 are poured into corresponding first molds and die-cast to form an integrally formed middle frame assembly 100 .

[0089] It is understandable that the first frame 110 and the second frame 120 are integrally formed. Optionally, the first frame 110 and the second frame 120 are integrally formed, which can ensure that the first frame 110 and the second frame 120 are integrally formed and manufactured and are inseparable structures. On the one hand, the number of parts used can be reduced, the difficulty of assembly and the requirements for assembly accuracy can be reduced, the process of welding and connecting the first frame 110 and the second frame 120 can be omitted, and the assembly efficiency can be improved; on the other hand, the overall rigidity of the middle frame assembly 100 can be improved, the possibility of loosening between the first frame 110 and the second frame 120 can be reduced, the structural strength is high, and the bonding strength between the first frame 110 and the second frame 120 is ensured.

[0090] Fig. 9 is a partial structural diagram of another first frame body in the middle frame assembly in the embodiment of the present application, Fig.10 Schematic diagram of another first frame structure in the middle frame assembly in the embodiment of the present application. Fig. 9 and Fig.10 As shown, the first frame 110 includes a connection block 113 and a plurality of first frame segments 114 . The connection block 113 is disposed between two adjacent first frame segments 114 to connect the two adjacent first frame segments 114 .

[0091] In other embodiments, the material used for the first frame 110 is cast into a corresponding second mold to form the first frame 110, and the material used for the second frame 120 is cast into a corresponding third mold to form the second frame 120, and then the two die-cast parts are assembled to form the middle frame assembly 100, for example, by welding.

[0092] In other embodiments, the material used for the first frame 110 is cast into the corresponding fourth mold to form a plurality of first frame segments 114, and adjacent first frame segments 114 are welded through connecting blocks 113 to form a complete first frame 110, which is then welded to the second frame 120 to form the middle frame assembly 100.

[0093] Optionally, the above-mentioned structural parts can be structural parts of mobile terminals, and the structural parts can be partially or completely made of the above-mentioned die-cast aluminum alloy. The above-mentioned structural parts can be structural parts in the fields of mobile phones, laptops, communication equipment industries, automobiles, civil hardware, etc. For example, the housing, bracket, shaft, slide, cover plate, etc.

[0094] like Figures 1 to 10 As shown, optionally, the first frame body 110 includes a first frame 111 and a second frame 112 , there are two first frames 111 and second frames 112 , and the two first frames 111 and second frames 112 are alternately arranged to form an installation cavity 150 for installing the second frame body 120 .

[0095] Optionally, the length of the second frame 112 is greater than that of the first frame 111 ; a second arc segment is provided at a connection between the first frame 111 and the second frame 112 , and the second arc segment faces the installation cavity 150 .

[0096] In this embodiment, the design of the second arc segment means that the four corners of the first frame 110 are arc-shaped transition angles, which on the one hand avoids using sharp angles to cause harm to the user, and on the other hand increases the appearance of the appearance through the arc-shaped transition angles.

[0097] The middle frame assembly provided in the embodiment of the present application includes: a first frame body and a second frame body, at least one of the first frame body and the second frame body is a die-casting, and the first frame body is arranged around the outer periphery of the second frame body; the first frame body is an integrally formed structure, the second frame body has a non-machined surface, and a draft angle is provided between the side wall surface of the second frame body and the non-machined surface of the second frame body, the angle range of the draft angle is between 90°-110°, and the thickness of the second frame body is greater than or equal to 0.8 mm and less than or equal to 1.5 mm.

[0098] The first frame and the second frame are arranged as an integral die-casting. For the CNC (Computer numerical control, CNC) processing in the prior art, the present application adopts die-casting, without the need for CNC processing, and thus the non-processed surface of the second frame is a smooth surface without CNC knife marks, and the structure is simple, which reduces the processing time and material loss, greatly improves the production efficiency and reduces the production cost; the die-casting process is adopted for integral die-casting, and the overall weight of the die-casting is light. An obtuse angle design is adopted between the side wall of the second frame and the bottom wall of the second frame, so that it is easy to demold during the production process, thereby improving the production efficiency.

[0099] Embodiment 2

[0100] The embodiment of the present application further provides a mobile terminal 200 , including a middle frame assembly 100 .

[0101] The mobile terminal provided in the embodiment of the present application is configured as an integral die-casting by configuring the first frame body and the second frame body. For the CNC (Computer numerical control, CNC) processing in the prior art, the present application adopts die-casting, without the need for CNC processing, and thus the non-processed surface of the second frame body is a smooth surface without CNC knife marks, and the structure is simple, which reduces the processing time and material loss, greatly improves the production efficiency and reduces the production cost; the integral die-casting is formed by the die-casting process, and the overall weight of the die-casting is light. An obtuse angle design is adopted between the side wall of the second frame body and the bottom wall of the second frame body, so that it is easy to demold during the manufacturing process, thereby improving the production efficiency.

[0102] Optionally, the mobile terminal in the embodiment of the present application can be implemented in various forms. For example, the mobile terminal described in the present application may include mobile terminals such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0103] In the subsequent description, the mobile terminal in the present application will be explained by taking the mobile terminal as an example. Those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the construction according to the implementation manner of the present application can also be applied to fixed type terminals.

[0104] Fig.11 is a schematic diagram of the hardware structure of a mobile terminal implementing each embodiment of the present application, please refer to Fig.11 The mobile terminal 200 may include: an RF (Radio Frequency) unit 201, a WiFi module 202, an audio output unit 203, an A / V (audio / video) input unit 204, a sensor 205, a display unit 206, a user input unit 207, an interface unit 208, a memory 209, a processor 210, and a power supply 211. Those skilled in the art will appreciate that Fig.11 The structure of the mobile terminal shown in the figure does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0105] Combine the following Fig.11The following is a detailed introduction to the various components of the mobile terminal:

[0106] The radio frequency unit 201 can be used for receiving and sending signals during information transmission or calls. Specifically, after receiving the downlink information of the base station, it is sent to the processor 210 for processing; in addition, the uplink data is sent to the base station. Generally, the radio frequency unit 201 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. In addition, the radio frequency unit 201 can also communicate with the network and other devices through wireless communication. The above-mentioned wireless communications can use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), 5G and 6G, etc.

[0107] WiFi is a short-range wireless transmission technology. The mobile terminal can help users send and receive emails, browse web pages, and access streaming media through the WiFi module 202. It provides users with wireless broadband Internet access. Fig.11 The WiFi module 202 is shown, but it is understandable that it is not a necessary component of the mobile terminal and can be omitted as needed without changing the essence of the utility model.

[0108] The audio output unit 203 can convert the audio data received by the RF unit 201 or the WiFi module 202 or stored in the memory 209 into an audio signal and output it as sound when the mobile terminal 200 is in a call signal receiving mode, a talk mode, a recording mode, a voice recognition mode, a broadcast receiving mode, etc. Moreover, the audio output unit 203 can also provide audio output related to a specific function performed by the mobile terminal 200 (for example, a call signal receiving sound, a message receiving sound, etc.). The audio output unit 203 may include a speaker, a buzzer, etc.

[0109] The A / V input unit 204 is used to receive audio or video signals. The A / V input unit 204 may include a graphics processor (GPU) 2041 and a microphone 2042, and the graphics processor 2041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The processed image frame can be displayed on the display unit 206. The image frame processed by the graphics processor 2041 can be stored in the memory 209 (or other storage medium) or sent via the radio frequency unit 201 or the WiFi module 202. The microphone 2042 can receive sound (audio data) via the microphone 2042 in a telephone call mode, a recording mode, a voice recognition mode, and other operating modes, and can process such sound into audio data. The processed audio (voice) data can be converted into a format output that can be sent to a mobile communication base station via the radio frequency unit 201 in the case of a telephone call mode. The microphone 2042 can implement various types of noise elimination (or suppression) algorithms to eliminate (or suppress) noise or interference generated in the process of receiving and sending audio signals.

[0110] The mobile terminal 200 also includes at least one sensor 205, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 2061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 2061 and / or the backlight when the mobile terminal 200 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can also be configured on the mobile phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be repeated here.

[0111] The display unit 206 is used to display information input by the user or information provided to the user. The display unit 206 may include a display panel 2061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0112] The user input unit 207 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the mobile terminal. Optionally, the user input unit 207 may include a touch panel 2071 and other input devices 2072. The touch panel 2071, also known as a touch screen, can collect the user's touch operation on or near it (such as the user's operation on the touch panel 2071 or near the touch panel 2071 using any suitable object or accessory such as a finger, stylus, etc.), and drive the corresponding connection device according to a pre-set program. The touch panel 2071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into the touch point coordinates, and then sends it to the processor 210, and can receive and execute the command sent by the processor 210. In addition, the touch panel 2071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 2071, the user input unit 207 may further include other input devices 2072. Optionally, the other input devices 2072 may include, but are not limited to, one or more of a physical keyboard, a function key (such as a volume control key, a switch key, etc.), a trackball, a mouse, a joystick, etc., which are not specifically limited here.

[0113] Optionally, the touch panel 2071 may cover the display panel 2061. When the touch panel 2071 detects a touch operation on or near it, it transmits the information to the processor 210 to determine the type of the touch event. Then, the processor 210 provides a corresponding visual output on the display panel 2061 according to the type of the touch event. Fig.11 In the figure, the touch panel 2071 and the display panel 2061 are used as two independent components to implement the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 2071 and the display panel 2061 can be integrated to implement the input and output functions of the mobile terminal, which is not limited here.

[0114] The interface unit 208 serves as an interface through which at least one external device can be connected to the mobile terminal 200. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, etc. The interface unit 208 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 200 or may be used to transmit data between the mobile terminal 200 and an external device.

[0115] The memory 209 can be used to store software programs and various data. The memory 209 can mainly include a program storage area and a data storage area. Optionally, the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 209 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0116] The processor 210 is the control center of the mobile terminal. It uses various interfaces and lines to connect various parts of the entire mobile terminal. It executes various functions of the mobile terminal and processes data by running or executing software programs and / or modules stored in the memory 209, and calling data stored in the memory 209, so as to monitor the mobile terminal as a whole. The processor 210 may include one or more processing units; preferably, the processor 210 may integrate an application processor and a modem processor. Optionally, the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 210.

[0117] The mobile terminal 200 may also include a power supply 211 (such as a battery) for supplying power to various components. Preferably, the power supply 211 may be logically connected to the processor 210 via a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system.

[0118] although Fig.11 Not shown, the mobile terminal 200 may further include a Bluetooth module, etc., which will not be described in detail here.

[0119] It is understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, it is known to those skilled in the art that with the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0120] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0121] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0122] In the present application, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally described in detail only the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of the present application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, reference can be made to the previous related detailed descriptions.

[0123] In the present application, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0124] The various technical features of the technical solution of the present application can be arbitrarily combined. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0125] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A middle frame assembly, characterized in that: include: A first frame and a second frame, at least one of the first frame and the second frame is a die-casting, and the first frame is disposed around the second frame; The first frame is an integrally formed structure, the second frame has a non-machined surface, and the thickness of the second frame is greater than or equal to 0.8 mm and less than or equal to 1.5 mm; A draft angle is provided between the side wall surface of the second frame body and the non-machined surface of the second frame body, and the draft angle ranges from 90° to 110°.

2. The middle frame assembly according to claim 1, characterized in that: The draft angle ranges from 93° to 95°.

3. The middle frame assembly according to claim 1 or 2, characterized in that: The second frame body further comprises a receiving cavity and at least one isolating member, wherein the isolating members are arranged at intervals along the first direction to isolate the receiving cavity into at least two cavities; The first direction is one of a length direction of the second frame body and a width direction of the second frame body.

4. The middle frame assembly according to claim 3, characterized in that: The isolating member comprises a first isolating surface and a second isolating surface connected to each other, the extension direction of the first isolating surface is parallel to the extension direction of the non-processed surface of the second frame, and the second isolating surface is located between the first isolating surface and the non-processed surface of the second frame; At least one of a portion between the second isolation surface and the first isolation surface and a portion between the second isolation surface and a non-processed surface of the second frame body has a first arc segment.

5. The middle frame assembly according to claim 4, characterized in that: The radius of the first arc segment is less than or equal to 0.5 mm.

6. The middle frame assembly according to claim 5, characterized in that: The radius of the first arc segment is greater than or equal to 0.1 mm.

7. The middle frame assembly according to claim 3, characterized in that: A groove is formed on the side wall of the second frame body, the notch of the groove is communicated with the accommodating cavity, and at least two sound amplification holes are formed at the bottom of the groove, and the sound amplification holes penetrate through opposite sides of the side wall of the first frame body.

8. The middle frame assembly according to claim 1 or 2, characterized in that: The first frame body includes a first frame and a second frame, the first frame and the second frame are both two, and the two first frames and the second frames are alternately arranged to form an installation cavity for installing the second frame body, and the length of the second frame is greater than the length of the first frame; A second arc segment is formed at a connection between the first frame and the second frame, and the second arc segment faces the installation cavity.

9. The middle frame assembly according to claim 1 or 2, characterized in that: The first frame and the second frame are an integrally formed structure; or, The first frame includes a connection block and at least two first frame segments. The connection block is arranged between two adjacent first frame segments to connect the two adjacent first frame segments.

10. A mobile terminal, characterized in that: include: A middle frame assembly as claimed in any one of claims 1 to 9.

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