CN113992774B

CN113992774B - Mobile terminal

Info

Publication number: CN113992774B
Application number: CN202111368388.7A
Authority: CN
Inventors: 于志玺
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2024-04-02
Anticipated expiration: 2041-11-18
Also published as: CN113992774A

Abstract

The application relates to a mobile terminal, including center and electroacoustic subassembly, the center includes the diapire and encloses the lateral wall of locating diapire circumference, and the lateral wall encloses with the diapire and closes and form the storage tank, and the lateral wall is sunken outward to storage tank and flange formation, and the expansion tank communicates with the storage tank, and the flange sets up relatively with the diapire. The electroacoustic assembly is at least partially accommodated in the accommodating groove and is lapped on one side of the flange, which is opposite to the expansion groove, the electroacoustic assembly and the middle frame are enclosed to form a sealed rear sound cavity, and the expansion groove forms at least part of the rear sound cavity. According to the mobile terminal, the side wall is recessed outwards of the accommodating groove to form the expansion groove and the flange, the expansion groove forms at least part of the rear sound cavity, the volume of the sound cavity can be increased by the expansion groove, the thickness of the bottom wall of the middle frame can be prevented from being thinned, and therefore the structural strength of the middle frame is guaranteed.

Description

Mobile terminal

Technical Field

The application relates to the technical field of terminals, in particular to a mobile terminal.

Background

Under the trend of light and thin design of mobile terminals (smart phones, tablet computers and the like), in order to ensure the sound effect of a loudspeaker, a sound cavity of the loudspeaker needs to occupy a large enough space, but in order to ensure the cruising ability of the mobile terminal, the volume of a battery is generally not suitable to be reduced. In order to increase the volume of the sound cavity, there is a scheme of reducing the thickness of the middle frame in the related art, but the scheme easily causes the structural strength of the middle frame to be insufficient.

Disclosure of Invention

The embodiment of the application provides a mobile terminal, so that the volume of a sound cavity is ensured under the condition of ensuring the structural strength of a middle frame.

A mobile terminal, comprising:

the middle frame comprises a bottom wall and a side wall which is arranged around the circumference of the bottom wall in a surrounding manner, a containing groove is formed by the side wall and the bottom wall in a surrounding manner, the side wall is recessed outwards of the containing groove to form an expanding groove and a flange, the expanding groove is communicated with the containing groove, and the flange is arranged opposite to the bottom wall; and

the electroacoustic assembly is at least partially accommodated in the accommodating groove and is lapped on one side of the flange, which is opposite to the expansion groove, the electroacoustic assembly and the middle frame are enclosed to form a sealed rear sound cavity, and the expansion groove forms at least part of the rear sound cavity.

Above-mentioned mobile terminal, because lateral wall is sunken outward to the storage tank to form dilatation groove and flange, dilatation groove and storage tank intercommunication, the flange sets up with the diapire relatively, electroacoustic subassembly at least partly holds in the storage tank and overlap joint in the one side of flange dorsad dilatation groove, electroacoustic subassembly encloses with the center and closes the back sound chamber that forms sealedly, the dilatation groove constitutes the at least part in back sound chamber, the volume in dilatation groove and flange not only can utilize dilatation groove increase sound chamber, can avoid the thickness of the diapire of thinning center moreover, thereby guarantee the structural strength of center.

In one embodiment, the expansion tank is formed by a numerical control turning process.

In one embodiment, the side wall comprises a partition strip and groove walls connected to opposite ends of the partition strip, and at least one of the partition strip and the groove walls connected to the two ends of the partition strip is provided with the expansion groove and the flange.

In one embodiment, the groove wall comprises a first wall, a second wall and a third wall, the first wall and the second wall are oppositely arranged, the third wall is opposite to the partition strip, the partition strip is connected between the first wall and the second wall, the third wall is connected between the first wall and the second wall, at least one of the partition strip, the first wall and the second wall is provided with the expansion groove and the flange, and the third wall is provided with a sound outlet; the electroacoustic assembly is provided with a front sound cavity which is separated from the rear sound cavity, and the front sound cavity is communicated with the sound outlet.

In one embodiment, the middle frame is provided with a battery compartment, and the battery compartment and the accommodating groove are separated by the separation strip.

In one embodiment, the mobile terminal comprises a first seal attached to a side of the flange facing away from the expansion tank to seal a gap between the electroacoustic assembly and the flange.

In one embodiment, the electroacoustic assembly comprises a bracket, an electroacoustic module and a circuit board, wherein the circuit board surrounds the accommodating groove and is overlapped on the first sealing piece, at least part of the electroacoustic module is accommodated in the accommodating groove, and the bracket covers the electroacoustic module and is enclosed with the electroacoustic module to form a front sound cavity.

In one embodiment, the mobile terminal includes a second seal disposed between the bracket and the circuit board to seal a gap between the bracket and the circuit board.

In one embodiment, the first sealing member and the second sealing member are respectively disposed around the accommodating groove.

In one embodiment, the middle frame comprises a frame body and a middle plate, the frame body is arranged around the middle plate, the middle plate is provided with a bottom wall and side walls, the mobile terminal comprises a threaded fastener, and the threaded fastener penetrates through the frame body, the bracket and the circuit board and is in threaded connection with the middle plate.

In one embodiment, the frame extends inward from the edge of the middle plate and covers a part of the middle plate, the frame and the middle plate form a containing cavity, and the circuit board extends into the containing cavity.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a mobile terminal according to an embodiment;

FIG. 2 is an exploded view of an embodiment of a mobile terminal with a portion of the structure removed;

FIG. 3 is a schematic diagram of a midplane of a mobile terminal according to an embodiment;

FIG. 4 is an enlarged schematic view of a middle plate of the mobile terminal shown in FIG. 3 at A;

FIG. 5 is a top view of the mobile terminal of FIG. 2 with portions of the structure removed;

FIG. 6 is a cross-sectional view of the mobile terminal of FIG. 5 taken along the rear edge B-B with portions of the structure removed;

FIG. 7 is a schematic diagram of a midplane with a circuit board and electroacoustic module mounted thereon in accordance with one embodiment;

fig. 8 is a schematic block diagram of a mobile terminal according to an embodiment of the present application.

Reference numerals:

10. mobile terminal 11, display screen module 12 and middle plate

12a, a containing groove 12b, a battery compartment 121 and a bottom wall

123. Side wall 123a, expansion groove 123b, flange

123c, convex wall 1231, partition bar 1233, groove wall

A1, a first wall A2, a second wall A3, and a third wall

A31, sound outlet 13, frame 14, electroacoustic assembly

14a, rear sound cavity 14b, front sound cavity 141, and support

143. Electroacoustic module 145, circuit board 151, first seal

153. Second sealing member

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As used herein, a "mobile terminal" includes, but is not limited to, the following electronic devices:

(1) Satellite phones or cellular phones;

(2) A personal communications system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities;

(3) A radiotelephone, pager, internet/intranet access, web browser, notepad, calendar, personal digital assistant (Personal Digital Assistant, PDA) equipped with a global positioning system (Global Positioning System, GPS) receiver;

(4) Conventional laptop and/or palmtop receivers;

(5) Conventional laptop and/or palmtop radiotelephone transceivers, and the like.

Referring to fig. 1, in some embodiments, the mobile terminal 10 is a smartphone. In other embodiments, the mobile terminal 10 may be an electronic device such as a tablet computer, a palm game, or the like. The present application describes a smart phone as an example.

Referring also to fig. 2, the mobile terminal 10 includes a display module 11, a middle plate 12, a frame 13, and an electroacoustic assembly 14. The display module 11 may be used to display information and provide an interactive interface for a user. It may use an LCD (Liquid Crystal Display ) screen, or an OLED (Organic Light-Emitting Diode) screen.

The frame 13 is disposed around the circumference of the middle plate 12 and is fixedly connected with the middle plate 12, and the display screen module 11 is disposed on one side of the middle plate 12 and is fixedly connected with at least one of the middle plate 12 and the frame 13. For example, the display module 11 may be fixedly connected to at least one of the middle plate 12 or the frame 13 by using a dispensing process. The combined structure of the midplane 12 and the frame 13, sometimes referred to as a midplane, may provide structural rigidity to the overall mobile terminal 10. The surface of the middle plate 12 may be machined to form auxiliary structures such as bosses, grooves, threaded holes, etc. to enable positioning of devices such as batteries, main plates, sub-plates, etc. within the mobile terminal 10. In the present embodiment, the middle plate 12 is assembled with the frame 13. In other embodiments, the middle plate 12 and the frame 13 may be integrally formed.

Referring to fig. 3 and 4, in the embodiment of the present application, the middle plate 12 may include a bottom wall 121 and a side wall 123 surrounding the bottom wall 121, where the side wall 123 and the bottom wall 121 form a receiving groove 12a for mounting the electroacoustic assembly 14, and the receiving groove 12a is located on a side of the middle plate 12 facing away from the display screen module 11. The side of the accommodating groove 12a is also provided with a battery compartment 12b for installing batteries, and the battery compartment 12b is mutually separated from the accommodating groove 12 a. In other embodiments, the side wall 123 of the accommodating groove 12a may be a part of the housing 13. For example, in embodiments where the midplane 12 is integrally formed with the frame 13, the frame 13 may include a portion of the side wall 123. The present application describes an example in which the middle plate 12 includes a bottom wall 121 and a side wall 123, but the side wall 123 is not limited to being located in the middle plate 12.

The side wall 123 is recessed outward of the accommodating groove 12a to form an expanded groove 123a and a flange 123b, the expanded groove 123a communicating with the accommodating groove 12a, and the flange 123b is disposed opposite to the bottom wall 121 with reference to fig. 5 and 6. In some embodiments, expansion slots 123a are generally C-shaped in cross-section, with flanges 123b being a portion of side walls 123 and being cantilevered in configuration. The expansion groove 123a having such a structure may also be called a back-off groove, i.e., the expansion groove 123a is completely blocked by the flange 123b when the flange 123b is seen in the thickness direction of the mobile terminal 10. The side of the structural side wall 123, flange 123b facing away from the expansion groove 123a, can be used to carry other components, which have a relatively high structural strength and are relatively low in material.

In the present embodiment, the expansion tank 123a is formed using a numerical control turning (CNC) process. The processing mode is convenient and fast, and the processing precision can be relatively high. In addition, in the process of machining the middle plate 12, for example, machining the accommodating groove 12a, a numerical control turning process is generally used, so that the expansion groove 123a can be machined together in the process of machining the middle plate 12 by numerical control turning, and the process is not increased, so that the machining time can be saved, and the machining efficiency can be improved. After the expansion groove 123a is formed, the thickness of the bottom wall 121 of the accommodating groove 12a is not affected, so that the structural strength of the middle plate 12 can be ensured, and the air tightness of the electroacoustic device 14 can be ensured. Of course, in other embodiments, the expansion tank 123a may be formed by a milling process or other material removal process.

At least part of the electroacoustic assembly 14 is accommodated in the accommodating groove 12a and is lapped on one side of the flange 123b, which is opposite to the expansion groove 123a, the electroacoustic assembly 14 and the middle plate 12 are enclosed to form a sealed rear sound cavity 14a, and the expansion groove 123a forms at least part of the rear sound cavity 14 a.

With continued reference to fig. 6, the electroacoustic assembly 14 may include a bracket 141, an electroacoustic module 143, and a circuit board 145, while referring to fig. 7, the circuit board 145 is disposed around the accommodating groove 12a and is overlapped with the flange 123b, at least a portion of the electroacoustic module 143 is accommodated in the accommodating groove 12a, and the bracket 141 covers the electroacoustic module 143 and encloses the electroacoustic module 143 to form a front sound cavity 14b. In the present embodiment, the electroacoustic module 143 is a speaker, i.e., a device for converting an electrical signal into an acoustic signal. The front sound cavity 14b is used for communicating with the outside of the mobile terminal 10, so that the electroacoustic module 143 generates sound to be transmitted out of the mobile terminal 10.

The circuit board 145 has a substantially rectangular frame shape and may have more extended portions. For example, in the embodiment of fig. 2, one side edge of the circuit board 145 extends away from the accommodating groove 12a, and a relatively large number of electronic components may be disposed at the extending portion. The circuit board 145 according to the embodiment of the present application may be also referred to as a sub-board, which is a concept opposite to the main board of the mobile terminal 10. The mobile terminal 10 has a sub-board generally smaller area than a main board, which may include electronic components such as a processor, a storage unit, a power management module, etc., and is generally used to provide electronic components such as an antenna, a speaker, etc. The main board is generally disposed at the top of the mobile terminal 10, the sub-board is disposed at the bottom of the mobile terminal 10, and the battery is generally disposed between the main board and the sub-board.

With continued reference to fig. 2, in some embodiments, the frame 13 extends inwardly from an edge of the middle plate 12 and covers a portion of the middle plate 12, and the frame 13 and the middle plate 12 form a receiving cavity (not shown) into which the circuit board 145 extends (see fig. 5). With this arrangement, the circuit board 145 can be sandwiched between the middle plate 12 and the extension portion of the frame 13, thereby achieving a better protection effect on the circuit board 145. Of course, this arrangement can also achieve better electromagnetic isolation of the electronic components and control circuitry on the circuit board 145 by the extension of the midplane 12 and frame 13.

Referring to fig. 6 again, since the circuit board 145 is disposed around the accommodating groove 12a and is stacked on the flange 123b, the structural arrangement can fully utilize the bearing surface of the flange 123b to reduce the area of the circuit board 145, thereby improving the compactness of the layout of electronic components inside the mobile terminal 10.

Further, to ensure airtightness of the front and rear sound chambers 14b and 14a, the opposite sides of the circuit board 145 may be provided with a first seal 151 and a second seal 153, respectively, to seal a gap between the circuit board 145 and the flange 123b and a gap between the bracket 141 and the circuit board 145.

Specifically, in the embodiment of the present application, the first sealing member 151 is connected to a side of the flange 123b facing away from the expansion groove 123a and disposed around the receiving groove 12a (fig. 2 may be combined), and the circuit board 145 is stacked on a side of the first sealing member 151 facing away from the expansion groove 123a. The bracket 141 of the electroacoustic assembly 14 may be fixedly connected to the middle plate 12 or the frame 13 by a screw or the like. For example, in the embodiment of the present application, the screw fastener is threaded through the frame 13, the bracket 141, and the circuit board 145 and is screwed to the middle board 12. The gap between the electroacoustic assembly 14 and the flange 123b can be sealed by pressing the first sealing member 151 with the bracket 141 and the circuit board 145, thereby ensuring the air tightness of the rear sound chamber 14 a. In the present embodiment, the first sealing member 151 is a sealing foam. In other embodiments, the first sealing member 151 may be a silicone pad or a sealant.

The second sealing member 153 is disposed between the bracket 141 and the circuit board 145 and surrounds the accommodating groove 12a (fig. 2 may be combined), and in the embodiment in which the bracket 141 of the electroacoustic assembly 14 is fixedly connected to the middle plate 12 or the frame 13 by using a threaded fastener such as a screw, the gap between the bracket 141 and the circuit board 145 may be sealed by pressing the bracket 141 against the second sealing member 153, so that the air tightness of the front sound cavity 14b is ensured. In the present embodiment, the second sealing member 153 is a sealing foam. In other embodiments, the second seal 153 may also be a silicone pad or a sealant.

In the mobile terminal 10, the side wall 123 is recessed towards the outside of the accommodating groove 12a to form the accommodating groove 123a and the flange 123b, the accommodating groove 123a is communicated with the accommodating groove 12a, the flange 123b is opposite to the bottom wall 121, the electroacoustic assembly 14 is at least partially accommodated in the accommodating groove 12a and is lapped on one side of the flange 123b, which is opposite to the accommodating groove 123a, the electroacoustic assembly 14 and the middle plate 12 are enclosed to form the sealed rear sound cavity 14a, the accommodating groove 123a forms at least part of the rear sound cavity 14a, the structures of the accommodating groove 123a and the flange 123b can not only utilize the accommodating groove 123a to increase the volume of the sound cavity, but also avoid thinning the thickness of the bottom wall 121 of the middle plate 12, thereby ensuring the structural strength of the middle plate 12. The expansion groove 123a processed by the numerical control turning process has relatively low processing cost, and the weight of the mobile terminal 10 can be reduced due to the fact that part of the material of the middle plate 12 is removed, so that the lightweight design of the mobile terminal 10 is facilitated. The machined structure also avoids the problems of sacrificing motherboard area, eliminating some functional structures, reducing battery volume, or sacrificing midplane 12 strength.

With continued reference to fig. 4, the side wall 123 may include a partition bar 1231 and groove walls 1233 connected to opposite ends of the partition bar 1231, and the side wall 123, the groove walls 1233 may be integrally formed. At least one of the partition bar 1231 and the groove wall 1233 connected to both ends of the partition bar 1231 is provided with the expansion groove 123a and the flange 123b. In the embodiment of the application, the partition bar 1231 protrudes from one side of the middle plate 12 facing away from the display screen module 11, and partitions the battery compartment 12b from the accommodating groove 12a, so as to isolate the battery compartment 12b from the accommodating groove 12 a.

Further, the groove wall 1233 includes a first wall A1, a second wall A2, and a third wall A3 opposite to the partition bar 1231, the partition bar 1231 is connected between the first wall A1 and the second wall A2, the third wall A3 is connected between the first wall A1 and the second wall A2, at least one of the partition bar 1231, the first wall A1, and the second wall A2 is provided with the expansion groove 123a and the flange 123b, and the third wall A3 may be provided with the sound outlet hole a31. For example, in the present embodiment, the partition bar 1231 is provided with the expansion groove 123a extending from one end to the other end thereof, and the flange 123b also extends from one end to the other end thereof. The first wall A1 and the second wall A2 connected to opposite ends of the partition bar 1231 are also provided with the expansion groove 123a, respectively, but the expansion groove 123a on the first wall A1 does not have to extend from one end to the other end of the first wall A1, and the expansion groove 123a on the second wall A2 does not have to extend from one end to the other end of the second wall A2.

Referring to fig. 6, in some embodiments, the partition bar 1231 further has a convex wall 123c extending in the thickness direction of the mobile terminal 10 and protruding from the flange 123b, that is, the cross section of the side wall 123 and the bottom wall 121 where the expansion groove 123a is located is substantially in an inverted F shape. The protruding wall 123c has a stopper function, and prevents the circuit board 145 and the bracket 141 from moving out of the accommodating groove 12a when the circuit board 145 and the bracket 141 are mounted on the flange 123b. Of course, the convex wall 123c can also better isolate the battery from the electroacoustic assembly 14, and protect the battery and the electroacoustic assembly 14.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a mobile terminal 10 according to an embodiment of the present application. The mobile terminal 10 may include Radio Frequency (RF) circuitry 501, memory 502 including one or more computer-readable storage media, an input unit 503, a display unit 504, a sensor 505, audio circuitry 506, a wireless fidelity (WiFi, wireless Fidelity) module 507, a processor 508 including one or more processing cores, and a power supply 509. Those skilled in the art will appreciate that the mobile terminal 10 structure illustrated in fig. 8 is not limiting of the mobile terminal 10 and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.

The radio frequency circuit 501 may be used to send and receive information, or receive and send signals during a call, specifically, after receiving downlink information of a base station, the downlink information is processed by one or more processors 508; in addition, data relating to uplink is transmitted to the base station. Typically, the radio frequency circuitry 501 includes, but is not limited to, an antenna, at least one amplifier, a tuner, one or more oscillators, a subscriber identity module (SIM, subscriber Identity Module) card, a transceiver, a coupler, a low noise amplifier (LNA, low Noise Amplifier), a duplexer, and the like. In addition, the radio frequency circuit 501 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol including, but not limited to, global system for mobile communications (GSM, global System of Mobile communication), general packet radio service (GPRS, general Packet Radio Service), code division multiple access (CDMA, code Division Multiple Access), wideband code division multiple access (WCDMA, wideband Code Division Multiple Access), long term evolution (LTE, long Term Evolution), email, short message service (SMS, short Messaging Service), and the like.

Memory 502 may be used to store applications and data. The memory 502 stores application programs including executable code. Applications may constitute various functional modules. The processor 508 executes various functional applications and data processing by running application programs stored in the memory 502. The memory 502 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data (e.g., audio data, phonebook, etc.) and the like created in accordance with the use of the mobile terminal 10. In addition, memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 502 may also include a memory controller to provide access to the memory 502 by the processor 508 and the input unit 503.

The input unit 503 may be used to receive input numbers, character information or user characteristic information such as fingerprints, and to generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, in one particular embodiment, the input unit 503 may include a touch-sensitive surface, as well as other input devices. The touch-sensitive surface, also referred to as a touch display screen or a touch pad, may collect touch operations thereon or thereabout by a user (e.g., operations thereon or thereabout by a user using any suitable object or accessory such as a finger, stylus, etc.), and actuate the corresponding connection means according to a predetermined program. Alternatively, the touch-sensitive surface may comprise two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 508, and can receive commands from the processor 508 and execute them.

The display unit 504 may be used to display information entered by a user or provided to a user as well as various graphical user interfaces of the mobile terminal 10, which may be composed of graphics, text, icons, video, and any combination thereof. The display unit 504 may include a display panel. Alternatively, the display panel may be configured in the form of a liquid crystal display (LCD, liquid Crystal Display), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch-sensitive surface may overlay a display panel, and upon detection of a touch operation thereon or thereabout, the touch-sensitive surface is passed to the processor 508 to determine the type of touch event, and the processor 508 then provides a corresponding visual output on the display panel based on the type of touch event. Although in fig. 8 the touch sensitive surface and the display panel are implemented as two separate components for input and output functions, in some embodiments the touch sensitive surface may be integrated with the display panel to implement the input and output functions.

The mobile terminal 10 may also include at least one sensor 505, such as a light sensor, a motion sensor, and other sensors. In particular, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel according to the brightness of ambient light and a proximity sensor that may turn off the display panel and/or backlight when the mobile terminal 10 is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and the direction when the mobile phone is stationary, and can be used for applications of recognizing the gesture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; other sensors, such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which may also be configured with the mobile terminal 10, are not described in detail herein.

Audio circuitry 506 may provide an audio interface between a user and the mobile terminal 10 through a speaker, microphone. The audio circuit 506 may convert the received audio data into an electrical signal, transmit to a speaker, and convert the electrical signal into a sound signal for output by the speaker; on the other hand, the microphone converts the collected sound signals into electrical signals, which are received by the audio circuit 506 and converted into audio data, which are processed by the audio data output processor 508 for transmission to, for example, another mobile terminal 10 via the radio frequency circuit 501, or which are output to the memory 502 for further processing. The audio circuit 506 may also include a headset base to provide communication of the peripheral headset with the mobile terminal 10.

Wireless fidelity (WiFi) is a short-range wireless transmission technology, and the mobile terminal 10 can help the user to send and receive e-mail, browse web pages, access streaming media, etc. through the wireless fidelity module 507, which provides wireless broadband internet access for the user. Although fig. 8 illustrates the wireless fidelity module 507, it is to be understood that it is not a necessary component of the mobile terminal 10 and may be omitted entirely as desired without changing the essence of the invention.

The processor 508 is a control center of the mobile terminal 10, connects various parts of the entire mobile terminal 10 using various interfaces and lines, and performs various functions of the mobile terminal 10 and processes data by running or executing application programs stored in the memory 502 and calling data stored in the memory 502, thereby performing overall monitoring of the mobile terminal 10. Optionally, the processor 508 may include one or more processing cores; preferably, the processor 508 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 508.

The mobile terminal 10 also includes a power supply 509 for providing power to the various components. Preferably, the power supply 509 may be logically connected to the processor 508 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system. The power supply 509 may also include one or more of any of a direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.

Although not shown in fig. 8, the mobile terminal 10 may further include a bluetooth module or the like, which is not described herein. In the implementation, each module may be implemented as an independent entity, or may be combined arbitrarily, and implemented as the same entity or several entities, and the implementation of each module may be referred to the foregoing method embodiment, which is not described herein again.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. A mobile terminal, comprising:

the middle frame comprises a bottom wall and a side wall which is arranged around the circumference of the bottom wall in a surrounding manner, wherein the side wall and the bottom wall are combined in a surrounding manner to form a containing groove, the side wall is recessed outwards of the containing groove to form an expanding groove and a flange, the expanding groove is communicated with the containing groove, the flange is arranged opposite to the bottom wall, the side wall comprises a partition strip and groove walls connected to the opposite ends of the partition strip, at least one of the partition strip and the groove walls connected with the two ends of the partition strip is provided with the expanding groove and the flange, and the partition strip is provided with a convex wall which extends along the thickness direction of a mobile terminal and protrudes out of the flange; and

2. The mobile terminal of claim 1, wherein the expansion tank is formed using a numerically controlled turning process.

3. The mobile terminal of claim 1, wherein the slot wall includes a first wall, a second wall, and a third wall opposite to the partition bar, the partition bar being connected between the first wall and the second wall, the third wall being connected between the first wall and the second wall, at least one of the partition bar, the first wall, and the second wall being provided with the expansion slot and the flange, the third wall being provided with a sound outlet; the electroacoustic assembly is provided with a front sound cavity which is separated from the rear sound cavity, and the front sound cavity is communicated with the sound outlet.

4. The mobile terminal of claim 1, wherein the middle frame is provided with a battery compartment, and the battery compartment and the accommodating groove are separated by the separation strip.

5. The mobile terminal of claim 1, comprising a first seal coupled to a side of the flange facing away from the expansion tank to seal a gap between the electroacoustic assembly and the flange.

6. The mobile terminal of claim 5, wherein the electroacoustic assembly comprises a bracket, an electroacoustic module and a circuit board, the circuit board is arranged around the accommodating groove and is stacked on the first sealing member, at least part of the electroacoustic module is accommodated in the accommodating groove, and the bracket covers the electroacoustic module and is enclosed with the electroacoustic module to form a front sound cavity.

7. The mobile terminal of claim 6, comprising a second seal disposed between the cradle and the circuit board to seal a gap between the cradle and the circuit board.

8. The mobile terminal of claim 7, wherein the first seal and the second seal are each disposed around the receiving groove.

9. The mobile terminal of claim 6, wherein the center frame comprises a frame body and a middle plate, the frame body is disposed around the middle plate, the middle plate has the bottom wall and the side walls, and the mobile terminal comprises a threaded fastener, and the threaded fastener is threaded through the frame body, the bracket, and the circuit board and is in threaded connection with the middle plate.

10. The mobile terminal of claim 9, wherein the frame extends inwardly from an edge of the midplane and covers a portion of the midplane, and wherein the frame and midplane form a receiving cavity into which the circuit board extends.