Electronic equipment and middle frame thereof

Abstract

The invention provides electronic equipment and a middle frame thereof. The middle frame comprises a frame and a middle plate, and the frame surrounds the periphery of the edge of the middle plate; the middle plate comprises a bottom wall and a side wall, an extending part is arranged on the side, away from the bottom wall, of the side wall, a connecting part extending in the thickness direction of the bottom wall is arranged on the extending part, the connecting part comprises a clamping part and a reinforcing part, and the two sides of the reinforcing part are connected with the side wall and the clamping part respectively; a connecting protruding plate is arranged on the side, facing the middle plate, of the frame, a clamping groove and a notch communicated with the clamping groove are formed in the connecting protruding plate, the clamping part is inserted into the clamping groove and fixedly connected with the connecting protruding plate, and the reinforcing part is inserted into the notch. According to the middle frame provided by the embodiment of the invention, the matching structure of the connecting part and the connecting convex plate is designed between the middle plate and the frame, so that reliable connection of the middle plate and the frame can be realized, the overall strength of the middle frame is improved, and the middle frame has the characteristics of low cost and simple process.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment structural parts, and in particular to an electronic equipment and a middle frame thereof. Background Art

[0002] The welded middle frame is a hardware middle frame solution for reducing the cost of mobile phones and other electronic devices. The frame and the middle plate are processed independently and fixed together by welding. On the basis of bringing the same appearance as the traditional hardware middle frame, it saves materials and CNC processing time, greatly reducing production costs. However, the welded middle frame structure in the conventional technical solution has the problem of poor connection reliability. Summary of the invention

[0003] According to a first aspect of an embodiment of the present application, there is provided a middle frame for an electronic device, the middle frame comprising a frame and a middle plate, the frame being arranged around the edge of the middle plate; the middle plate comprising a bottom wall and a side wall, the side wall being provided with an extension portion on a side away from the bottom wall, the extension portion being provided with a connection portion extending in the thickness direction of the bottom wall, the connection portion comprising a clamping portion and a reinforcing portion, the two sides of the reinforcing portion being respectively connected to the side wall and the clamping portion; a connecting convex plate being provided on a side of the frame facing the middle plate, a clamping groove and a notch communicating with the clamping groove being provided on the connecting convex plate, the clamping portion being inserted into the clamping groove and fixedly connected to the connecting convex plate, the reinforcing portion being inserted into the notch.

[0004] In the second aspect, an embodiment of the present application provides a middle frame for an electronic device, the middle frame comprising a frame and a middle plate, the frame being arranged around the edge of the middle plate; the middle plate comprising a bottom wall and a side wall, the side wall being provided with a connecting protrusion on the side away from the bottom wall, the connecting protrusion being provided with a snap-fitting groove and a notch connected to the snap-fitting groove; the frame comprising a main body and an extension portion extending toward one side of the middle plate, the extension portion being provided with a connecting portion extending in the thickness direction of the bottom wall, the connecting portion comprising a snap-fitting portion and a reinforcing portion, the two sides of the reinforcing portion being respectively connected to the main body and the snap-fitting portion; the snap-fitting portion being inserted into the snap-fitting groove and fixedly connected to the connecting protrusion, and the reinforcing portion being inserted into the notch.

[0005] In a third aspect, an embodiment of the present application provides an electronic device, which includes the middle frame described in the above embodiment.

[0006] The middle frame provided in the embodiment of the present application can realize reliable connection between the middle plate and the frame by designing a matching structure of a connecting portion and a connecting convex plate between the middle plate and the frame, thereby improving the overall strength of the middle frame and having the characteristics of low cost and simple process. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0008] Figure 1 It is a flow chart of an embodiment of a method for preparing a middle frame of an electronic device of the present application;

[0009] Figure 2 It is a structural schematic diagram of the process of combining the frame and the middle plate in the embodiment of the present application;

[0010] Figure 3 It is a partial structural diagram of an embodiment of a middle frame used in an electronic device of the present application;

[0011] Figure 4 yes Figure 3 A schematic diagram of the structure of the middle frame from another perspective in the embodiment;

[0012] Figure 5 yes Figure 3 Schematic diagram of the split structure of the middle frame in the embodiment;

[0013] Figure 6 yes Figure 5 A schematic diagram of the structure of the frame in the embodiment;

[0014] Figure 7 yes Figure 4 The schematic diagram of the structural section along the AA line;

[0015] Figure 8 is a schematic diagram of a middle frame structure of another embodiment;

[0016] Fig. 9 It is a partial structural diagram of another embodiment of the frame in the present application;

[0017] Fig.10 It is a partial structural diagram of another embodiment of the frame in the present application;

[0018] Fig.11 It is a structural schematic diagram of an embodiment of the electronic device of the present application;

[0019] Fig.12 yes Fig.11 A schematic cross-sectional view of the structure of the electronic device at DD in the embodiment;

[0020] Fig.13 It is a schematic diagram of the structural composition block diagram of an embodiment of the electronic device of the present application. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0022] The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] As used herein, "electronic devices" (or simply "terminals") include, but are not limited to, devices configured to receive / send communication signals via a wireline connection (e.g., via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (e.g., for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). Communication terminals configured to communicate via a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, organizers, calendars, and / or global positioning system (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device equipped with a cellular communication module.

[0025] First, the preparation method of the frame in the embodiment of the present application is introduced. Figure 1 , Figure 1 This is a flow chart of an embodiment of a method for preparing a middle frame of an electronic device of the present application. It should be noted that the middle frame obtained by the preparation method of the present application can be used in electronic devices, and the electronic devices may include mobile phones, tablet computers, laptop computers, wearable devices, etc. The method for preparing the middle frame of the electronic device includes but is not limited to the following steps.

[0026] Step S100: using a first alloy material to form a frame.

[0027] Optionally, in this step, the frame is used as a side appearance part of the middle frame, and can be made of stainless steel or titanium alloy, etc., which has high brightness and high hardness. Of course, in some other embodiments, it can also be other alloy materials, such as magnesium alloy, aluminum alloy, etc. Since the frame is an appearance part, it can be formed by CNC or stamping.

[0028] Step S200: using the second alloy material to form a middle plate.

[0029] The processing methods of the middle plate can be die-casting or stamping, among which die-casting can be a metal casting process that uses the inner cavity of the mold to apply high pressure to the molten metal. The mold is usually made of a higher strength alloy. This process is somewhat similar to injection molding. The middle plate formed by die-casting is usually not on the appearance surface, and the interior is usually processed with aluminum alloy materials. For the processing of metal middle frames of rare metals such as titanium alloys, it can achieve a low-cost alternative. The detailed technical features of die-casting are within the understanding of those skilled in the art and will not be repeated here.

[0030] Step S300: fix the frame and the middle plate to form a middle frame.

[0031] In this step, the frame and the middle plate obtained by the above CNC and die-casting schemes can be placed in a positioning mold, and then the two can be fixed by welding, gluing, riveting, screw connection, etc. to form a middle frame. Figure 2 , Figure 2 1 is a schematic diagram of the structure of the frame and the middle plate in the embodiment of the present application, wherein the middle frame is indicated by 10, the frame is indicated by 100, and the middle plate is indicated by 200. In addition, after the middle frame and the middle plate are fixedly connected, the step of injecting rubber parts on the frame and the middle plate may be further included, which will not be repeated here.

[0032] Of course, this embodiment only introduces a method for preparing the middle frame, and other methods may be used in other embodiments. The detailed features of this part are within the scope of understanding of those skilled in the art, and will not be listed and described in detail here.

[0033] The technical solution in the embodiment of the present application is mainly aimed at the connection method between the edge ring of the middle plate and the frame, and the structure will be described in detail below.

[0034] Please also read Figures 3 to 5 , Figure 3 It is a partial structural diagram of an embodiment of a middle frame used in an electronic device of the present application. Figure 4 yes Figure 3 A schematic diagram of the structure of another perspective of the middle frame in the embodiment, Figure 5 yes Figure 3 The schematic diagram of the disassembled structure of the middle frame in the embodiment, the middle frame 10 includes a frame 100 and a middle plate 200.

[0035] Specifically, the frame 100 is arranged around the edge of the middle plate 200; wherein the middle plate 200 includes a bottom wall 210 and a side wall 220, the bottom wall 210 is used to support the display screen of the electronic device or form a battery compartment, etc., and only the structure at the edge is shown in the figure. The side wall 220 is provided with an extension portion 230 on the side away from the bottom wall 210. Optionally, the number of the connecting portions 230 can be multiple, and they are evenly arranged along the outer periphery of the side wall 220. The extension portion 230 is provided with a connecting portion 240 extending in the thickness direction of the bottom wall 210 (Z direction in the figure). Optionally, the connecting portion 240 includes a clamping portion 241 and a reinforcing portion 242, and the two sides of the reinforcing portion 242 are respectively connected to the side wall 220 and the clamping portion 241; optionally, the whole of the middle plate 200 in this embodiment can be an integral die-cast structure.

[0036] Please also read Figure 6 , Figure 6 yes Figure 5 The structural diagram of the frame in the embodiment, wherein the frame 100 includes a main body 110 and a connecting protruding plate 120 extending toward one side of the middle plate 200, a snap-fitting groove 121 and a notch 122 communicating with the snap-fitting groove 121 are provided on the connecting protruding plate 120, a snap-fitting portion 241 is inserted into the snap-fitting groove 121 and fixedly connected to the connecting protruding plate 120, and a reinforcing portion 242 is inserted into the notch 122. Optionally, since the force direction of the frame 100 and the middle plate 200 is the X direction in the figure, the cross-sectional area of ​​the snap-fitting portion 241 is designed to be larger than the size of the notch 122, thereby preventing the snap-fitting portion 241 from escaping from the notch 122.

[0037] The fixing connection method of the clamping part 241 and the connecting convex plate 120 includes welding, gluing, riveting, and screw connection. The embodiment of the present application mainly introduces the welding connection method. Optionally, the frame 100 and the middle plate 200 in this embodiment can be made of metal materials, and the clamping part 241 is fixed to the connecting convex plate 120 by welding. Please continue to refer to Figure 3 and Figure 4 A welding gap 102 is provided between the clamping portion 241 and the inner wall of the clamping groove 121. By welding along the welding gap 102 between the frame 100 and the middle plate 200, a structural connection and an electrical connection are formed between the frame 100 and the middle plate 200 to form a whole. The middle frame structure in the embodiment of the present application can solve the problem of cracks caused by welding thermal strain and cracks caused by the injection molding process. When welding is performed along the welding gap 102 between the frame 100 and the middle plate 200, the material of the frame 100 expands due to heat, and the increased volume due to the expansion is released through the gap (welding gap 102) between the circular notch (clamping groove 121) and the clamping portion 241 of the middle plate, and the thermal strain trend inside the frame 100 material itself is effectively slowed down, so it is not easy to crack due to thermal strain that produces deformation.

[0038] Optionally, the frame 100 in the embodiment of the present application is provided with an antenna, wherein the antenna can be a part of the frame itself, or an FPC structure can be attached to the inner side of the frame as an antenna, and the frame 100 and the middle plate 200 need to be electrically connected. During the process of injection molding the plastic part of the middle frame, the force direction of the frame 100 material is the opposite direction of the X direction in the figure, and the force direction of the middle plate 200 material is the X direction in the figure. Please refer to Figure 7 , Figure 7 yes Figure 4 The structural cross-sectional diagram along the AA line in the figure, wherein the stress cross section of the middle plate 200 material is as follows: Figure 7 As shown by the dashed line B, the cross-sectional area of ​​the load is greatly increased compared with the solution without the reinforcement part 242. Please refer to Figure 8 , Figure 8 2 is a schematic diagram of the middle frame structure of another embodiment. In this embodiment, the connecting portion 240 of the middle plate only includes the clamping portion 241 and no reinforcement portion. Figure 8 In the embodiment, due to the change of the structural form (the structure of the reinforcement part is added), the cracking point is Figure 8 The position of the dotted line C in the figure is also changed to Figure 7 At the position of the dotted line B shown, the cracks caused by the cracking are unlikely to extend to the electrical connection portion between the frame material and the middle plate material, and have little impact on the performance of the middle frame antenna.

[0039] Optionally, see Figure 4 , Figure 5 as well as Figure 7 In this embodiment, the connection convex plate 120 and the extension part 230 are stacked. This design structure can reduce the lateral width of the middle frame. Without increasing the lateral width, the overall strength of the connection structure of the middle plate material is stronger. Under the condition that the current mobile phone width remains unchanged, more space can be left for the battery, thereby improving the stacking competitiveness of the whole machine.

[0040] The matching shape of the clamping portion and the clamping groove in the embodiment of the present application is not limited to Figures 4 to 6 Please refer to the structure in the embodiment. Fig. 9 and Fig.10 , Fig. 9 It is a partial structural diagram of another embodiment of the frame in this application, Fig.10 1 is a partial structural diagram of another embodiment of the frame of the present application, wherein, as long as the clamping portion 241 can be reliably clamped in the clamping groove 121 in the X direction, it is not limited to Fig. 9 Medium round and Fig.10 The detailed features of the middle dovetail type are within the scope of understanding of those skilled in the art and will not be listed or described in detail here.

[0041] In addition, in some other embodiments, the matching structure between the middle frame and the middle plate can be swapped, that is, a connecting convex plate is provided on the middle plate, and an extension portion and a connecting portion are provided on the frame. Specifically, the middle plate includes a bottom wall and a side wall, and the side wall is provided with a connecting convex plate on the side away from the bottom wall, and a snap-fit ​​groove and a notch connected to the snap-fit ​​groove are provided on the connecting convex plate; the frame includes a main body and an extension portion extending toward one side of the middle plate, and a connecting portion extending in the thickness direction of the bottom wall is provided on the extension portion, and the connecting portion includes a snap-fit ​​portion and a reinforcement portion, and the two sides of the reinforcement portion are respectively connected to the main body and the snap-fit ​​portion; the snap-fit ​​portion is inserted in the snap-fit ​​groove and fixedly connected to the connecting convex plate, and the reinforcement portion is inserted in the notch. The detailed features of this part are similar to those in the aforementioned embodiment and will not be repeated here.

[0042] The middle frame structure in the embodiment of the present application is based on the original scheme ( Figure 8 In the embodiment (hereinafter referred to as the embodiment), the cracking phenomenon and causes at the root of the columnar structure of the middle plate material are studied, the strength of the cracking position is strengthened in a targeted manner, and the cracking starting point is transferred to a position that does not affect the electrical connection, thus solving the antenna signal problem caused by the cracking of the middle plate material from the root. According to the conventional solution, the phenomenon and causes of thermal stress cracking of the ring-shaped structure of the outer frame material during welding are creatively designed with less impact on the welding area, providing a space for thermal stress release, thus solving the problem of cracking during the welding process of the outer frame material from the root. While solving the above two problems, the space is effectively utilized, and there is no increase in stacking space compared to the original solution. Moreover, due to the improvement in overall strength, the stacking space can be further compressed compared to the original solution, thereby improving the competitiveness of the product in terms of thinness and lightness.

[0043] The middle frame provided in the embodiment of the present application can realize reliable connection between the middle plate and the frame by designing a matching structure of a connecting portion and a connecting convex plate between the middle plate and the frame, thereby improving the overall strength of the middle frame and having the characteristics of low cost and simple process.

[0044] Furthermore, the present application also provides an electronic device. The electronic device in this embodiment may include a mobile phone, a tablet computer, a laptop computer, a wearable device, etc. This embodiment is described by taking a mobile phone as an example. Fig.11 and Fig.12 , Fig.11 is a schematic diagram of the structure of an embodiment of the electronic device of the present application, Fig.12 yes Fig.11 The electronic device in this embodiment is a schematic cross-sectional view of the structure at DD. The electronic device in this embodiment may include a display screen module 30, a middle frame 10, a control circuit board 20 and a back cover 40. The middle frame 10 may be the structure in the above embodiment.

[0045] Optionally, the display screen module 30 and the back cover 40 are respectively matched with the middle frame 10 to form an accommodation space 1000, and the control circuit board 20 is disposed in the accommodation space 1000. The control circuit board 20 is electrically connected to the display screen module 30, and the control circuit board 20 is used to control the display screen module 30. The detailed technical features of the other parts of the electronic device are within the scope of understanding of those skilled in the art and will not be repeated here.

[0046] See also Fig.13 , Fig.13 It is a schematic diagram of the structural composition block diagram of an embodiment of an electronic device of the present application. The electronic device can be a mobile phone, a tablet computer, a laptop computer, a wearable device, etc. The diagram of this embodiment takes a mobile phone as an example. The structure of the electronic device may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (which may be the display screen module 30 in the above embodiment), a sensor 950, an audio circuit 960, a wifi module 970, a processor 980 (which may be the control circuit board 20 in the above embodiment) and a power supply 990, etc. Among them, the RF circuit 910, the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960 and the wifi module 970 are respectively connected to the processor 980; the power supply 990 is used to provide power to the entire electronic device.

[0047] Specifically, the RF circuit 910 is used to receive and send signals; the memory 920 is used to store data instruction information; the input unit 930 is used to input information, which may specifically include a touch panel 931 and other input devices 932 such as operation buttons; the display unit 940 may include a display panel 941, etc.; the sensor 950 includes an infrared sensor, a laser sensor, etc., for detecting user approach signals, distance signals, etc.; the speaker 961 and the microphone (or microphone) 962 are connected to the processor 980 through the audio circuit 960 for receiving and sending sound signals; the wifi module 970 is used to receive and transmit wifi signals, and the processor 980 is used to process data information of the electronic device. For the specific structural features of the electronic device, please refer to the relevant description of the above embodiment, which will not be described in detail here.

[0048] The electronic device in this embodiment, wherein the frame can realize reliable connection between the middle plate and the frame by designing a matching structure of a connecting portion and a connecting convex plate between the middle plate and the frame, thereby improving the overall strength of the middle frame, and has the characteristics of low cost and simple process.

[0049] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A middle frame for an electronic device, characterized in that: The middle frame includes a frame and a middle plate, and the frame is arranged around the edge of the middle plate; the middle plate includes a bottom wall and a side wall, and the side wall is provided with an extension portion on the side away from the bottom wall, and the extension portion is provided with a connecting portion extending in the thickness direction of the bottom wall, and the connecting portion includes a clamping portion and a reinforcing portion, and the two sides of the reinforcing portion are respectively connected to the side wall and the clamping portion; the frame is provided with a connecting convex plate on the side facing the middle plate, and a clamping groove and a notch connected to the clamping groove are opened on the connecting convex plate, the clamping portion is inserted in the clamping groove and fixedly connected to the connecting convex plate, and the reinforcing portion is inserted in the notch.

2. The middle frame according to claim 1, characterized in that: The frame and the middle plate are both made of metal materials, and the clamping portion is fixed to the connecting convex plate by welding.

3. The middle frame according to claim 2, characterized in that: A welding gap is provided between the clamping portion and the inner wall of the clamping groove.

4. The middle frame according to claim 2, characterized in that: The frame is provided with an antenna, and the frame is electrically connected to the middle plate.

5. The middle frame according to claim 1, characterized in that: The cross-sectional area of ​​the clamping portion is larger than the size of the notch, thereby preventing the clamping portion from escaping from the notch.

6. The middle frame according to claim 1, characterized in that: The connecting protruding plate and the extending portion are stacked.

7. The middle frame according to claim 1, characterized in that: The middle plate is an integral die-cast structure.

8. The middle frame according to claim 1, characterized in that: There are multiple connecting parts, which are evenly arranged along the outer circumference of the side wall.

9. A middle frame for an electronic device, characterized in that: The middle frame includes a frame and a middle plate, the frame is arranged around the edge of the middle plate; the middle plate includes a bottom wall and a side wall, the side wall is provided with a connecting protrusion on the side away from the bottom wall, the connecting protrusion is provided with a snap-fitting groove and a notch connected to the snap-fitting groove; the frame includes a main body and an extension portion extending toward one side of the middle plate, the extension portion is provided with a connecting portion extending in the thickness direction of the bottom wall, the connecting portion includes a snap-fitting portion and a reinforcing portion, the two sides of the reinforcing portion are respectively connected to the main body and the snap-fitting portion; the snap-fitting portion is inserted into the snap-fitting groove and fixedly connected to the connecting protrusion, and the reinforcing portion is inserted into the notch.

10. An electronic device, characterized in that: The electronic device comprises the middle frame according to any one of claims 1 to 9.

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