Electronic device

Abstract

The electronic equipment provided by the embodiment of the invention is thin in thickness and good in sealing effect. The electronic equipment comprises a middle frame, the middle frame comprises an outer part and a supporting part, and the outer part is provided with a sound outlet hole; the display module and the rear cover are arranged on the two sides of the supporting piece respectively, and a whole machine cavity is defined by the display module and the rear cover and the appearance piece; the loudspeaker module is located in the whole machine cavity and located on one side of the supporting piece, and the loudspeaker module comprises a side shell and an inner core dividing an area defined by the side shell into a front cavity and a rear cavity; the side shell comprises a first surface and a second surface, a sound outlet channel communicated with the front cavity and the sound outlet hole is formed in the side shell, and the sound outlet channel enables the second surface to be provided with a notch; the sealing bracket is positioned in a gap between the outer part and the side shell, and a sound outlet channel is exposed; the first annular sealing piece is located between the second surface of the side shell and the supporting piece and located between the sealing bracket and the supporting piece; the front cavity is at least defined by the inner core, the inner surface, the supporting piece, the sealing support and the first annular sealing piece.

Description

[0001] This application is based on a divisional application with application number 202310486116.X, application date April 28, 2023, and invention name “Electronic Device”. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the technical field of electronic equipment, and in particular to an electronic equipment including a speaker module. Background Art

[0003] The speaker module is used to restore audio electrical signals such as music and voice into sound. It can support the function of external audio and is widely used in electronic devices such as mobile phones, tablets, and laptops.

[0004] However, the thickness of the speaker module is relatively thick, which is contrary to the demand for ultra-thin electronic devices. Therefore, how to achieve an ultra-thin design of the entire device by reducing the thickness of the speaker module is a technical problem that needs to be solved urgently. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides an electronic device, which can realize a lightweight and thin design of the electronic device and has a good sealing effect.

[0006] An embodiment of the present application provides an electronic device, which includes a middle frame, a display module, a back cover, a speaker module, a sealing bracket and a first annular sealing member; the middle frame includes an appearance member and a support member, the appearance member is annular, the support member is located inside the appearance member, and a sound outlet hole is provided on the appearance member; the support member is located between the display module and the back cover, and the display module, the appearance member of the middle frame and the back cover form a whole machine; the speaker module is located in the cavity of the whole machine and is located on one side of the support member along a first direction, the speaker module includes a side shell and an inner core, the side shell is annular, the inner core is located inside the side shell, and the area surrounded by the side shell is divided into a front cavity and a rear cavity; along the first direction, the side shell includes relative first and second shells. A surface and a second surface, the side shell also includes an outer surface and an inner surface connecting the first surface and the second surface, a sound outlet channel is opened on the side shell, the sound outlet channel runs through the outer surface and the inner surface, and extends to the second surface along the first direction, the sound outlet channel connects the front cavity and the sound outlet hole; the sealing bracket is located in the gap between the appearance part and the side shell, and the sealing bracket is annular to expose the sound outlet hole and the sound outlet channel; the first annular seal is located between the second surface of the side shell and the support part, and between the sealing bracket and the support part; the area surrounded by the inner core, the inner surface of the side shell, the support part, the sealing bracket and the first annular seal forms a front cavity; the first direction is perpendicular to the plane where the support part is located.

[0007] Since the sound outlet channel is provided on the side shell and extends to the second surface of the side shell, when only the first annular seal is provided between the second surface of the side shell and the support, the gas in the front cavity will be transmitted to the gap between the sealing bracket and the support through the sound outlet channel, and then transmitted to the overall cavity through the gap between the sealing bracket and the support, resulting in display module vibration, high-frequency drop, poor waterproofing of the whole machine and other problems. In the embodiment of the present application, not only the first annular seal is provided between the second surface of the side shell and the support, but also the first annular seal extends to the gap between the sealing bracket and the support to achieve sealing of the gap between the sealing bracket and the support, so that an open front cavity (which is beneficial to reducing the thickness of the electronic device) can be achieved while ensuring the sealing effect of the front cavity.

[0008] Exemplarily, the first direction is the direction from the display module to the back cover, that is, the thickness direction of the electronic device, that is, the Z-axis direction in the embodiment.

[0009] Exemplarily, when the electronic device is a mobile phone, a tablet computer, a laptop computer, a car computer, a smart wearable device, etc., the back cover is, for example, a battery cover.

[0010] Exemplarily, the electronic device may be a flat electronic device or a foldable electronic device. When the electronic device is a foldable electronic device, the display module may be a flexible screen, and the back cover may be an external screen.

[0011] In some possible implementations, the sealing bracket includes a supporting portion and a sealing portion, both of which are annular, and the sealing portion is fixed to a side of the supporting portion away from the appearance member. The sealing bracket has a simple structure, and is conducive to the assembly of the sealing bracket and ensuring the sealing effect at the gap between the side shell and the appearance member.

[0012] In some possible implementations, based on the sealing bracket including a supporting portion and a sealing portion, the electronic device further includes a blocking structure located in a gap surrounded by the supporting portion, the side housing, the sealing portion and the first annular seal.

[0013] Since the annular sealing part has a certain thickness in the direction away from the support part (i.e., the Y-axis direction in the embodiment), there is a gap between the support part, the side shell, the sealing part and the first annular sealing member. In order to prevent the gas in the front cavity from leaking into the whole machine cavity through the gap, a blocking structure is arranged in the gap surrounded by the support part, the side shell, the sealing part and the first annular sealing member, and the blocking structure blocks the gas in the front cavity from being transmitted to the whole machine cavity through the gap, thereby further ensuring the sealing effect.

[0014] In some possible implementations, on the basis that the electronic device further includes a blocking structure, when the sealing bracket includes a supporting portion and a sealing portion, the blocking structure and the sealing portion are integrally formed. That is, when preparing the sealing portion, the blocking structure is prepared, and there is no need to prepare the blocking structure separately, which simplifies the process steps, reduces costs, and can also ensure that there is no gap between the blocking structure and the annular sealing portion, thereby ensuring the sealing effect.

[0015] Of course, the blocking structure and the sealing portion may also be formed separately.

[0016] In some possible implementations, the electronic device further includes a blocking structure, the blocking structure is in an elongated shape, and along a first direction, two opposite ends of the elongated blocking structure are in contact with the sealing portion and the first annular sealing member respectively; along a second direction, two opposite sides of the elongated blocking structure are in contact with the side housing and the supporting portion respectively, and the second direction is perpendicular to the first direction. The blocking structure has a simple structure.

[0017] Exemplarily, the second direction is the Y-axis direction in the embodiment.

[0018] In some possible implementations, the electronic device further includes a blocking structure, the sealing portion has an opening, the sealing portion includes a first end and a second end located on both sides of the opening, and the blocking structure is located between the first end and the first annular sealing member, and between the second end and the first annular sealing member. In this way, the structure of the sealing portion is simple, and materials can be saved and costs can be reduced.

[0019] Exemplarily, the sealing portion and the blocking structure are in a "U" shape.

[0020] In some possible implementations, the electronic device further includes a blocking structure, and the width of the blocking structure in the third direction is greater than or equal to 0.6 mm and less than or equal to 2 mm; the third direction is perpendicular to the first direction. In this way, the blocking structure will not be too small to be unfavorable for sealing, nor will it occupy the entire device cavity because of its large width.

[0021] Exemplarily, the third direction is the X-axis direction in the embodiment.

[0022] Exemplarily, the width of the blocking structure in the third direction includes 0.6 mm, 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm or 2 mm.

[0023] In some possible implementations, the electronic device further includes a blocking structure, and the blocking structure includes a material such as glue or soft glue that can achieve a sealing effect.

[0024] In some possible implementations, on the basis that the electronic device also includes a blocking structure, when the blocking structure includes soft glue, when the blocking structure is located in the gap surrounded by the supporting part, the side shell, the sealing part and the first annular seal, a compression interference is formed between the blocking structure and the supporting part, the side shell, the sealing part and the first annular seal to further ensure the sealing effect and prevent the front cavity air from leaking through the gap between the blocking structure and the supporting part, the gap between the side shell, the gap between the sealing part, and the gap between the first annular seal.

[0025] In some possible implementations, on the basis that the electronic device also includes a blocking structure, an auxiliary structure is provided at the area where the blocking structure is connected to the first annular seal, and the auxiliary structure is used to shield the area where the blocking structure is connected to the first annular seal. The area where the blocking structure is connected to the first annular seal is sealed by the auxiliary structure to prevent the air in the front cavity from leaking through the gap between the blocking structure and the first annular seal.

[0026] In some possible implementations, an auxiliary structure is provided at a region where the blocking structure is connected to the first annular seal, and the auxiliary structure includes a weakly sticky glue such as silicone glue or UV glue.

[0027] In some possible implementations, an auxiliary structure is provided at the region where the blocking structure is connected to the first annular seal. The auxiliary structure is formed by a glue dispensing process and has a simple structure and a good sealing effect.

[0028] In some possible implementation methods, based on the auxiliary structure provided in the area where the blocking structure is connected to the first annular seal, the auxiliary structure is located on the outside of the front cavity. In this way, the setting of the auxiliary structure is convenient. That is, after completing the assembly of the speaker module and the first annular seal, the auxiliary structure is directly set in the area where the blocking structure is connected to the first annular seal. The setting method is simple and reduces the process difficulty.

[0029] In some possible implementations, a support hole is provided on the support member, and the orthographic projection of the support hole on the plane where the support member is located overlaps with the orthographic projection of the core on the plane where the support member is located, and the electronic device further includes a second annular seal, which is located between the support member and the display module and is arranged around the edge of the support hole. The arrangement of the support hole can further increase the volume of the front cavity, so that while ensuring the volume of the front cavity, the core can be further moved downward, the size of the side shell in the first direction becomes smaller, the back cover can be further moved downward, and the distance between the display module and the back cover becomes shorter, which is conducive to the lightweight design of the electronic device.

[0030] Exemplarily, the plane where the support member is located is the plane formed by the X-axis and the Y-axis in the embodiment.

[0031] In some possible implementations, a support hole is provided on the support member, and the orthographic projection of the support hole on the plane where the support member is located overlaps with the orthographic projection of the core on the plane where the support member is located, and the electronic device further includes a second annular seal, which is located between the support member and the display module, and is arranged around the edge of the support hole, and the display module is arranged on the support member through an adhesive layer, and the adhesive layer is the second annular seal. In this way, there is no need to separately arrange the second annular seal, which simplifies the structure and reduces the cost.

[0032] In some possible implementations, the rear cavity is connected to the whole cavity of the electronic device to increase the volume of the rear cavity, that is, the whole cavity of the entire electronic device serves as the rear cavity of the speaker module, which can achieve better audio effects in the limited architectural space of the electronic device.

[0033] In some possible implementations, the first annular seal includes a first edge and a second edge, the second edge is arranged around the first edge, the distance between the first edge and the second edge is W1, 0.8mm≤W1≤2mm. In other words, the width of the first annular seal is between 0.8mm and 2mm. In this way, the first annular seal will not fail to achieve a sealing effect due to a too small width, nor will the first annular seal occupy too much space in the entire machine cavity due to a large width.

[0034] Exemplarily, the distance W1 between the first edge and the second edge is 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm or 2 mm, etc.

[0035] In some possible implementations, the first annular sealing member includes foam, foam adhesive, glue or adhesive backing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0037] Figure 2 for Figure 1 an exploded view of the electronic device shown;

[0038] Figure 3 A schematic diagram of the structure of a speaker module provided in an embodiment of the present application;

[0039] Figure 4 for Figure 3 A cross-sectional view of the loudspeaker module along the AA' direction;

[0040] Figure 5 A schematic diagram of the structure of another speaker module provided in an embodiment of the present application;

[0041] Figure 6for Figure 5 A cross-sectional view of the loudspeaker module along the BB' direction;

[0042] Figure 7 for Figure 1 A cross-sectional view of the electronic device shown along the CC' direction;

[0043] Figure 8 The figure is the position relationship diagram of the appearance parts and the sealing bracket;

[0044] Fig. 9 for Figure 1 A cross-sectional view of the electronic device shown along the DD' direction;

[0045] Fig.10 for Figure 1 Another cross-sectional view of the electronic device shown along the DD' direction;

[0046] Fig.11 A diagram showing the position relationship between the support member and the sealing member provided in the embodiment of the present application;

[0047] Fig.12 for Figure 1 Another cross-sectional view of the electronic device shown along the DD' direction;

[0048] Fig.13 A schematic diagram of the structure of another speaker module provided in an embodiment of the present application;

[0049] Fig.14 for Figure 1 Another cross-sectional view of the electronic device shown along the DD' direction;

[0050] Fig.15 A comparison diagram of the positional relationship between the speaker module, the sealing bracket and the first annular sealing member;

[0051] Fig.16 A position relationship diagram of the middle frame, sealing bracket, speaker module and display module provided in an embodiment of the present application;

[0052] Fig.17 for Fig.16 A local magnified image of the middle SS area;

[0053] Fig.18 A position relationship diagram of the second side wall, the fourth subsection of the first annular seal and the sealing bracket provided in an embodiment of the present application;

[0054] Fig.19 A diagram showing another position relationship of the middle frame, the sealing bracket, the speaker module and the display module provided in an embodiment of the present application;

[0055] Fig. 20 for Fig.19A partial enlarged view of the middle VV region;

[0056] Fig.21 A diagram showing another position relationship of the blocking structure, the second side wall, the fourth subsection of the first annular seal and the sealing bracket provided in an embodiment of the present application;

[0057] Fig. 22 A position relationship diagram of the blocking structure, the second side wall, the fourth subsection of the first annular seal, the sealing portion and the auxiliary structure provided in an embodiment of the present application;

[0058] Fig.23 for Fig. 22 A magnified image of the middle UU region;

[0059] Fig.24 Another position relationship diagram of the blocking structure, the second side wall, the fourth subsection of the first annular seal, the sealing portion and the auxiliary structure provided in the embodiment of the present application;

[0060] Fig.25 Another position relationship diagram of the blocking structure, the second side wall, the fourth subsection of the first annular seal, the sealing portion and the auxiliary structure provided in the embodiment of the present application.

[0061] Reference numerals:

[0062] 10-display module; 11-cover plate; 12-display screen; 20-back cover; 30-middle frame; 300-sound outlet hole; 40-main board; 50-sub-board; 60-flexible circuit board; 70-battery; 80-speaker module; 81-sound outlet channel; 82-housing; 83-core; 90-first annular seal; 100-mobile phone; 110-blocking structure; 120-auxiliary structure;

[0063] 821-front shell; 8211-front cavity wall; 8212-annular front cavity step; 822-rear shell; 8221-hollow portion; 823-side shell; 8231-first side wall; 8232-second side wall; 823a-first surface; 823b-second surface;

[0064] 33-sealing bracket; 331-supporting portion; 332-sealing portion; 3321-first sealing sub-portion; 3322-second sealing sub-portion; 3323-third sealing sub-portion; 3324-fourth sealing sub-portion; 3325-first end portion; 3326-second end portion;

[0065] 91-First Division; 92-Second Division; 93-Third Division; 94-Fourth Division. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0067] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0068] The terms "first" and "second" in the description and claims of the embodiments of the present application are used to distinguish different objects rather than to describe a specific order of objects. For example, a first target object and a second target object are used to distinguish different target objects rather than to describe a specific order of target objects.

[0069] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0070] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more than two. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.

[0071] The embodiment of the present application provides an electronic device, which may be a mobile phone, a tablet computer, a laptop computer, a personal digital assistant (PDA), a car computer, a television, a smart wearable device (such as a smart watch, a smart bracelet, a smart head-mounted display, smart glasses), a smart home device, or other device including a speaker module. The embodiment of the present application does not specifically limit the specific form of the above electronic device. For the convenience of explanation, the following description is made by taking the electronic device as an example of a mobile phone.

[0072] See also Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application, Figure 2 for Figure 1 An exploded view of the electronic device shown. Figure 1 and Figure 2As shown, the mobile phone 100 includes a display module 10, a back cover (also called a battery cover) 20, a middle frame 30, a main board 40, a sub-board 50, a flexible printed circuit (Flexible Printed Circuit, FPC) 60 connecting the main board 40 and the sub-board 50, a battery 70 and at least one speaker module 80 and other structures.

[0073] Understandably, Figure 1 and Figure 2 The following figures and the related drawings only schematically illustrate some components of the mobile phone 100, and the actual shapes, sizes, positions and structures of these components are not subject to Figure 1 and Figure 2 In addition, when the electronic device is a device of some other form, the electronic device 100 may not include at least one of the display module 10 , the back cover 20 , the middle frame 30 , the sub-board 50 , the FPC 60 , and the battery 70 .

[0074] Figure 1 and Figure 2 In the figure, the mobile phone 100 is in the shape of a rectangular flat plate. In order to facilitate the clear description of the subsequent structural features and the positional relationship of the structural features, the positional relationship of the various structures in the mobile phone is specified in the X-axis direction, the Y-axis direction and the Z-axis direction, wherein the X-axis direction is the width direction of the mobile phone, the Y-axis direction is the length direction of the mobile phone, and the Z-axis direction is the thickness direction of the mobile phone. It can be understood that the coordinate system (i.e., the X-axis, Y-axis and Z-axis) of the electronic device can be flexibly set according to actual needs, and no specific limitation is made here. In other optional embodiments, the shape of the electronic device can also be a square flat plate, a circular flat plate, an elliptical flat plate, etc. Of course, the electronic device can also be a foldable electronic device, etc.

[0075] Please continue to see Figure 2 The display module 10 includes a cover plate 11 and a display screen 12 stacked along the Z-axis direction. The cover plate 11 protects the display screen 12, for example. The display screen 12 includes, for example, a liquid crystal display (LCD), an organic light emitting diode (OLED) display screen, and an LED display screen, among which the LED display screen includes, for example, a Micro-LED display screen, a Mini-LED display screen, and the like. The embodiment of the present application does not limit the type of the display screen 12.

[0076] Along the Z-axis direction, the back cover 20 is located on the side of the display screen 12 away from the cover plate 11, wherein the material of the back cover 20 may include, for example, opaque materials such as plastic, plain leather, and glass fiber; or may include translucent materials such as glass. The material of the back cover 20 is not limited in the embodiment of the present application.

[0077] The middle frame 30 is located between the cover plate 11 and the back cover 20. The middle frame 30 includes an annular appearance part 31 and a support part 32 located inside the annular appearance part 31 and between the display screen 12 and the back cover 20. The cover plate 11, the annular appearance part 31 and the back cover 20 can form a whole machine cavity. The display screen 12, the main board 40, the sub-board 50, the FPC 60, the battery 70, the speaker module 80 and other structures are located in the whole machine cavity, and the structures in the whole machine cavity are supported by the support part 32. Exemplarily, the display module 10 is, for example, connected by an adhesive layer (hereinafter referred to as the attachment Figure 7 13) is arranged on the support member 32, the speaker module 80 and the sub-panel 50 are located on the side of the support member 32 away from the display screen 12, and the display screen 12, the speaker module 80 and the sub-panel 50 are supported by the support member 32, wherein the adhesive layer, such as a backing glue, can set the display screen 12 on the adhesive structure on the support member 32.

[0078] Along the Y-axis direction, the main board 40 and the sub-board 50 are arranged on both sides of the battery 70 , and the FPC 60 passes through the battery 70 to electrically connect the main board 40 and the sub-board 50 to achieve data and signal transmission between the main board 40 and the sub-board 50 .

[0079] A control chip is integrated on the mainboard 40. The control chip includes, for example, a system on chip (SoC) and an application processor (AP). Among them, the SoC integrates, for example, a central processing unit (CPU), a graphic processing unit (GPU), and a modem.

[0080] The sub-board 50 integrates an antenna radio frequency front end, a Universal Serial Bus (USB) device, and the like.

[0081] The battery 70 is used to supply power to the mobile phone 100 , such as the display screen 12 , components on the main board 40 , components on the sub-board 50 , and the speaker module 80 , to ensure normal operation.

[0082] The speaker module 80 is used to convert audio signals such as music and voice into sound, and can support the function of external audio. Along the Y-axis direction, the speaker module 80 is located on the side of the battery 70 away from the main board 40, that is, it is arranged adjacent to the sub-board 50 and is electrically connected to the sub-board 50. In this case, the audio signal sent by the main board 40 is transmitted to the speaker module 80 via the FPC 60 and the sub-board 50, and is converted into sound output by the speaker module 80. Specifically, the speaker module 80 has a sound outlet channel 81, and accordingly, a sound outlet hole 300 is opened on the middle frame 30, which is connected to the sound outlet channel 81. After the sound converted by the speaker module 80 is output by the sound outlet channel 81, it is further output to the outside of the mobile phone 100 by the sound outlet hole 300.

[0083] It should be noted that Figure 1 and Figure 2 The description is made by taking the case where the number of speaker modules 80 is one and the speaker module 80 is located on the side of the battery 70 away from the main board 40 as an example. In other optional embodiments of the present application, the speaker module 80 may also be arranged adjacent to the main board 40 and electrically connected to the main board 40. In this case, the main board 40 sends the audio signal to the speaker module 80 electrically connected thereto, and the audio signal is converted into sound output by the speaker module 80; or, the number of speaker modules 80 is greater than or equal to two, at least one speaker module 80 is arranged adjacent to the sub-board 50 and electrically connected to the sub-board 50, and at least one speaker module 80 is arranged adjacent to the main board 40 and electrically connected to the main board 40.

[0084] See also Figure 3 and Figure 4 , Figure 3 is a structural schematic diagram of a speaker module. Figure 4 for Figure 3 The cross-sectional view of the speaker module along the AA' direction is shown. Figure 3 and Figure 4 As shown, the speaker module 80 includes a housing 82 and a core 83. Along the Z-axis direction, the housing 82 includes a front housing 821 and a rear housing 822 that are arranged opposite to each other, and the front housing 821 is located between the rear housing 822 and the display screen 12. The housing 82 also includes a side housing 823 connecting the front housing 821 and the rear housing 822. The side housing 823 is, for example, integrally formed with the front housing 821, and then assembled with the rear housing 822 to form the housing 82, which is conducive to reducing the difficulty of molding and assembling the housing 82.

[0085] The front housing 821 includes a front cavity wall 8211 and an annular front cavity step 8212 arranged around the front cavity wall 8211. The annular front cavity step 8212 may be a plastic part, and the front cavity wall 8211 may be a metal part. For example, the front cavity wall 8211 is a stainless steel part. The front cavity wall 8211 and the annular front cavity step 8212 may be an integral structure, that is, the front cavity wall 8211 and the annular front cavity step 8212 are integrally formed. For example, the annular front cavity step 8212 may be formed on the front cavity wall 8211 by injection molding. Alternatively, the front cavity wall 8211 may be arranged on the annular front cavity step 8212 by bonding, clamping, screws, etc. By arranging the front cavity wall 8211, the overall structural strength of the front housing 821 may be improved without increasing the thickness of the front housing 821.

[0086] The side shell 823 includes two first side walls 8231 arranged opposite to each other along the X-axis direction and two second side walls 8232 arranged opposite to each other along the Y-axis direction. During assembly, a sound outlet channel 81 is formed between one of the second side walls 8232 and the annular front cavity step 8212. In this way, there is no need to set up the sound outlet channel 81 separately, thereby reducing the difficulty of assembly.

[0087] The front shell 821, the rear shell 822 and the side shell 823 form a housing cavity. The core 83 is disposed in the shell 82, and the housing cavity of the shell 82 is divided into a front cavity Q1 and a rear cavity Q2, wherein the front cavity Q1 is communicated with the sound outlet channel 81, and a ventilation channel (not shown in the figure) connecting the core 83 and the rear cavity Q2 is provided between the core 83 and the rear cavity Q2 to realize ventilation between the core 83 and the rear cavity Q2.

[0088] The core 83 includes a bracket, a diaphragm system, a voice coil and a magnetic circuit system, wherein the diaphragm system includes a dome and a diaphragm, and the core 83 separates the front cavity Q1 and the rear cavity Q2 of the speaker module 80 with the help of the diaphragm system. The bracket is used to support the diaphragm system and fix the magnetic circuit system. The magnetic circuit system is used to cooperate with the voice coil to drive the diaphragm group to vibrate. The diaphragm system can drive the air in the front cavity Q1 to vibrate. The vibrating air in the front cavity Q1 is led out from the sound outlet channel 81 to form sound, and the sound is further led out of the mobile phone 100 through the sound outlet hole 300 connected to the sound outlet channel 81 so that it can be heard by the user. The specific structure and working principle of the core 83 are similar to those of the existing technology. For details, please refer to the existing technology and will not be repeated here.

[0089] It should be noted that Figure 3 and Figure 4 The description is made by taking the housing 82 as an independent housing structure as an example, but it does not constitute a limitation of the present application. In other optional embodiments of the present application, at least part of the housing 82 can be surrounded by other components of the electronic device. For example, see Figure 5 and Figure 6 , Figure 5A schematic diagram of the structure of another speaker module provided in an embodiment of the present application is shown in FIG. Figure 6 for Figure 5 The cross-sectional view of the speaker module along the BB' direction is shown. Figure 5 and Figure 6 As shown, in order to achieve better audio effects within the limited architectural space of the electronic device, such as stereo sound, the speaker module can be used in an electronic device with an open sound cavity, that is, the entire cavity of the entire electronic device is used as the back cavity of the speaker module, that is, a hollow portion 8221 is provided on the rear shell body 822, or the rear shell body 822 is directly omitted to connect the back cavity Q2 of the speaker module 80 and the whole cavity.

[0090] As can be seen from the above, the middle frame 30 is provided with a sound outlet hole 300 communicating with the sound outlet channel 81. The sound converted by the speaker module 80 is output through the sound outlet channel 81 and further output through the sound outlet hole 300 to the outside of the mobile phone 100. However, in the process of sound being transmitted from the sound outlet channel 81 to the sound outlet hole 300, the sound may leak through the gap between the sound outlet channel 81 and the sound outlet hole 300.

[0091] For details, see Figure 7 and Figure 8 , Figure 7 for Figure 1 A cross-sectional view of the electronic device shown along the CC' direction, Figure 8 Figure 2 is a diagram showing the position relationship between the middle frame's exterior components and the sealing bracket. Figure 7 and Figure 8 As shown, there is a gap between the appearance member 31 with the sound outlet hole 300 and the second side wall 8232 with the sound outlet channel 81, that is, Figure 7 There is a gap between the OO1 area in the figure, and the appearance member 31 with the sound outlet hole 300 and the annular front cavity step 8212, that is, Figure 7 In the process of sound being output to the sound outlet hole 300 via the sound outlet channel 81, in order to prevent the sound from leaking through the gap between the appearance member 31 with the sound outlet hole 300 and the second side wall 8232 with the sound outlet channel 81, and the gap between the appearance member 31 with the sound outlet hole 300 and the annular front cavity step 8212 (the leakage path is Figure 7), for example, after leakage, the air in the front cavity Q1 and the air in the rear cavity Q2 are ventilated, and the phases of the air in the front cavity Q1 and the air in the rear cavity Q2 are offset, and the sound disappears. A sealing bracket 33 is also provided on the middle frame 30. Along the Y-axis direction, the sealing bracket 33 is located between the appearance part 31 with the sound outlet hole 300 and the second side wall 8232 with the sound outlet channel 81, and is fixed on the appearance part 31. The sealing bracket 33 includes a supporting portion 331 and a sealing portion 332. Both the supporting portion 331 and the sealing portion 332 are annular. Along the Y-axis direction, the annular sealing portion 332 is fixed to the side of the annular supporting portion 331 away from the appearance part 31. By arranging the supporting portion 331 and the sealing portion 332 into an annular shape, the sound outlet hole 300 can be exposed to avoid blocking the sound outlet hole 300. When the speaker module 80 and the middle frame 30 are assembled, the sealing bracket 33 is located on the side of the second side wall 8232 facing the appearance member 31, and the annular sealing portion 332 is arranged around the sound outlet channel 81, and is located between the second side wall 8232 with the sound outlet channel 81 and the annular support portion 331, and between the annular front cavity step 8212 and the annular support portion 331, that is, Figure 7 The OO1 area and the OO2 area are sealed to prevent sound from leaking through the gap between the appearance part 31 with the sound outlet hole 300 and the second side wall 8232 with the sound outlet channel 81, and the gap between the appearance part 31 with the sound outlet hole 300 and the annular front cavity step 8212.

[0092] Exemplarily, the support portion 331 includes, for example, hard plastic, etc., to ensure the supporting effect on the sealing portion 332. The sealing portion 332 includes, for example, soft plastic, to ensure the sealing effect.

[0093] At present, due to consumer demand, electronic devices need to be designed to be thinner and thinner, that is, the size of the electronic device 100 in the Z-axis direction is getting smaller and smaller. In order to achieve a thinner design of electronic devices, a thinner speaker module is required.

[0094] Combination Fig. 9 , Fig. 9 for Figure 1 A cross-sectional view of the electronic device along the DD' direction is shown. Fig. 9 As shown, the thickness of the speaker module 80 (the dimension in the Z-axis direction) is mainly composed of three parts: the thickness H1 of the front cavity wall 8211, the height H2 of the core 83, and the avoidance gap H3 between the front cavity wall 8211 and the support member 32 (to avoid interference of the support member 32 with the front cavity wall 8211). The thinning of the core 83 will affect the performance of the speaker module 80. When the thickness of the core 83 cannot be thinned, the lightweight design of the electronic device can be achieved by adjusting the design of the front cavity Q1.

[0095] For details, see Fig.10 , Fig.10 for Figure 1 Another cross-sectional view of the electronic device along the DD' direction is shown. Fig.10 As shown, the front housing 821 only includes an annular front cavity step 8212, that is, the front cavity wall 8211 is hollowed out to form a front cavity hole 82111, that is, the front cavity Q1 becomes an open front cavity. In some embodiments, the projection of the front cavity hole 82111 on the plane formed by the X-axis and the Y-axis overlaps with the projection of the diaphragm system of the core 83 on the plane formed by the X-axis and the Y-axis, that is, the design of the front cavity hole 82111 can expose the diaphragm and the dome.

[0096] It should be noted that the projection of the front cavity hole 82111 on the plane formed by the X-axis and the Y-axis overlaps with the diaphragm system of the core 83. The projection of the front cavity hole 82111 on the plane formed by the X-axis and the Y-axis may partially overlap with the projection of the diaphragm system of the core 83 on the plane formed by the X-axis and the Y-axis; or the projection of the front cavity hole 82111 on the plane formed by the X-axis and the Y-axis may overlap with the projection of the diaphragm system of the core 83 on the plane formed by the X-axis and the Y-axis; or the projection of the diaphragm system of the core 83 on the plane formed by the X-axis and the Y-axis may be located within the projection of the front cavity hole 82111 on the plane formed by the X-axis and the Y-axis. The meaning of overlap involved in the following embodiments is the same as this meaning, and the following embodiments will not be repeated.

[0097] When the front cavity wall 8211 is hollowed out, in the Z-axis direction, the thickness H1 of the front cavity wall 8211 and the avoidance gap H3 between the front cavity wall 8211 and the support member 32 can be omitted. In this way, while ensuring the volume of the front cavity Q1, the inner core 83 can be moved downward, and the size of the side shell 823 in the Z-axis direction becomes smaller, and then the back cover 20 can be moved downward, which is conducive to the lightweight design of the electronic device.

[0098] It should be noted that the so-called kernel 83 moving down is Fig.10 The middle core 83 moves along the -Z direction, and the rear cover 20 moves downward. Fig.10 The middle rear cover 20 moves in the -Z direction. After moving downward, the vertical distance (along the Z axis direction) between the rear cover 20 and the display screen 12 becomes shorter, which is conducive to the thin and light design of the electronic device. The meaning of the downward movement involved in the following embodiments is the same as this meaning, and the following embodiments will not be repeated.

[0099] Although the open front cavity design is conducive to the lightweight design of electronic devices, it will bring about sealing problems. That is, if the sealing effect is not good, it will cause ventilation between the front cavity Q1 and the rear cavity Q2, the air in the front cavity Q1 and the air in the rear cavity Q2 will cancel each other out, the sound will disappear, the display screen 12 will vibrate, and the whole machine will be poorly waterproof, affecting the user experience.

[0100] Based on this, combined Fig.11 , Fig.11The position relationship diagram of the support member and the sealing member provided in the embodiment of the present application. Fig.10 and Fig.11 As shown, a first annular seal 90 is provided between the support member 32 of the middle frame 30 and the annular front cavity step 8212. The provision of the first annular seal 90 can block the air in the front cavity Q1, preventing the air in the front cavity Q1 from being transmitted to the rear cavity Q2 through the gap between the support member 32 and the annular front cavity step 8212 (transmission path is Fig.10 Indicated by the dotted arrow in ).

[0101] The embodiment of the present application does not limit the type of the first annular seal 90, as long as it can prevent air from passing through the gap between the support member 32 and the annular front cavity step 8212. Exemplarily, the first annular seal 90 is, for example, foam, foam glue, glue or adhesive.

[0102] To further reduce the thickness of electronic devices in the Z-axis direction, see Fig.12 , Fig.12 for Figure 1 Another cross-sectional view of the electronic device along the DD' direction is shown. Fig.12 As shown, a support hole 321 is opened on the support member 32, and the projection of the front cavity hole 82111 on the plane formed by the X-axis and the Y-axis overlaps with the projection of the support hole 321 on the plane formed by the X-axis and the Y-axis. Correspondingly, the adhesive layer 13 is also hollowed out.

[0103] The setting of the support hole 321 can further increase the volume of the front cavity Q1. In this way, while ensuring the volume of the front cavity Q1, the core 83 can be further moved downward, the size of the side shell 823 in the Z-axis direction becomes smaller, and the back cover 20 can be further moved downward, which is conducive to the lightweight design of the electronic device. The gap between the display screen 12 and the support member 32 is sealed by the adhesive layer 13 to prevent the air in the front cavity Q1 from leaking through the gap between the display screen 12 and the support member 32, that is, the adhesive layer reuses the sealing structure between the display screen 12 and the support member 32. In this way, there is no need to set a sealing structure separately, simplifying the structure and reducing costs. Of course, a second annular seal around the edge of the support hole 321 can also be set separately. That is, the second annular seal can be set separately, or the adhesive layer 13 can be reused as the second annular seal.

[0104] However, it is considered that when the inner core 83 continues to move downward, interference will be formed between the inner core 83 and the front cavity step 8212, that is, Fig.12 In the EE region shown, the gap between the inner core 83 and the front cavity step 8212 is small, so that the air in the front cavity Q1 cannot be transmitted to the sound outlet hole 300 through the sound outlet channel 81 .

[0105] Based on this, see Fig.13 , Fig.13 This is a schematic diagram of the structure of another speaker module provided in an embodiment of the present application. Fig.13 As shown, the front cavity step 8212 of the speaker module 80 is also removed, that is, the speaker module 80 at this time includes an annular side wall 823, and the core 83 is located in the space surrounded by the annular side wall 823, and the space is divided into a front cavity Q1 and a rear cavity Q2. This arrangement can ensure that the thickness of the electronic device in the Z-axis direction is reduced while avoiding interference between the core 83 and the front cavity step 8212.

[0106] However, it can be seen from the above that the first annular seal 90 is disposed between the front cavity step 8212 and the support member 32 of the middle frame 30. When the front cavity step 8212 is removed, the sealing effect becomes worse. Therefore, when the front cavity step 8212 is removed, in order to ensure the sealing of the front cavity Q1, see Fig.14 and Fig.15 , Fig.14 for Figure 1 Another cross-sectional view of the electronic device along the DD' direction, Fig.15 is a comparison diagram of the positional relationship between the speaker module, the sealing bracket and the first annular sealing member, wherein: Fig.15 (1) is a schematic diagram of the structure when the first annular seal is not provided, Fig.15 (2) is a schematic diagram of the structure when the first annular seal is set. Fig.14 and Fig.15 As shown, when the speaker module 80 does not include the front cavity step 8212, that is, the speaker module 80 is Fig.13 In the structure shown, a first annular seal 90 may be provided between the side shell 823 of the outer shell 82 and the support member 32 of the middle frame 30 and between the annular support portion 331 and the support member 32 .

[0107] Specifically, the side housing 823 includes a first surface 823a and a second surface 823b that are arranged opposite to each other along the Z-axis direction. The first surface 823a is located on the side of the second surface 823b that is away from the display screen 12. The sound outlet channel 81 arranged on the second side wall 8232 makes the second surface 823b have a notch (such as Fig.13As shown). The first annular seal 90 includes a first sub-portion 91, a second sub-portion 92, a third sub-portion 93 and a fourth sub-portion 94 which are continuous and connected end to end. The first sub-portion 91 of the first annular seal 90 is provided between the second surface 823b of one of the first side walls 8231 and the support member 32 of the middle frame 30, the second sub-portion 92 of the first annular seal 90 is provided between the second surface 823b of one of the second side walls 8232 (the second side wall 8232 without the sound outlet channel 81) and the support member 32, the third sub-portion 93 of the first annular seal 90 is provided between the second surface 823b of the other first side wall 8231 and the support member 32 of the middle frame 30, and the second surface 823b of the other second side wall 8232 (the second side wall 8232 with the sound outlet channel 81) is provided. The fourth division 94 of the first annular seal 90 is provided between the first side wall 8231 and the support member 32, and between the sealing bracket 331 and the support member 32, so as to complete the gap between the second surface 823b of the first side wall 8231 and the support member 32 of the middle frame 30, the gap between the second surface 823b of the second side wall 8232 and the support member 32, and the gap between the sealing bracket 331 and the support member 32. In this way, even if the front cavity step 8212 is cancelled, the sealing of the front cavity Q1 can be achieved, avoiding the problem of the front cavity Q1 and the rear cavity Q2 being ventilated, causing the phase cancellation of the air in the front cavity Q1 and the air in the rear cavity Q2, and the disappearance of the sound. And the cancellation of the front cavity step 8212 can make the core 83 continue to move downward, further reducing the thickness of the electronic device in the Z-axis direction, which is conducive to the lightweight design of the electronic device.

[0108] In this case, the first annular seal 90 includes a first edge 90a and a second edge 90b, the second edge 90b is arranged around the first edge 90a, the distance between the first edge 90a and the second edge 90b is W1, 0.8mm≤W1≤2mm. In other words, the width of the first annular seal 90 is between 0.8mm and 2mm. In this way, the first annular seal 90 will not fail to achieve the sealing effect due to the small width, nor will the first annular seal 90 occupy too much space in the whole machine cavity due to the large width.

[0109] Exemplarily, the distance W1 between the first edge 90a and the second edge 90b includes 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm or 2 mm.

[0110] It should be noted that the cancellation of the front cavity step 8212 in the above example is based on the premise that the support member 32 of the middle frame 30 is provided with a support hole 321, but does not constitute a limitation of the present application. In other optional embodiments of the present application, the cancellation of the front cavity step 8212 can also be based on the premise that the support member 32 of the middle frame 30 is not improved (that is, the support hole 321 is not provided).

[0111] In this case, after research, it was found that Fig.16 , Fig.17 and Fig.18 , Fig.16 A position relationship diagram of the middle frame, the sealing bracket, the first annular sealing member, the speaker module and the display module provided in an embodiment of the present application, Fig.17 for Fig.16 A partial enlarged view of the middle SS area. Fig.18 A position relationship diagram of the second side wall, the fourth subsection of the first annular seal and the sealing bracket provided in the embodiment of the present application. Fig.16 , Fig.17 and Fig.18 As shown, since the annular sealing portion 332 has a certain thickness in the Y-axis direction, there are gaps among the annular support portion 331, the second side wall 8232, the annular sealing portion 332 and the fourth sub-portion 94 of the first annular sealing member 90, and the number of the gaps is two. Along the Y-axis direction, the two gaps are located on both sides of the sound outlet channel 81, as shown in FIG. Fig.17 The PP region shown and Fig.18 TT area shown.

[0112] In order to prevent the gas in the front chamber Q1 from leaking into the whole machine cavity through this gap, see Fig.19 , Fig. 20 and Fig.21 , Fig.19 This is another position relationship diagram of the middle frame, sealing bracket, speaker module and display module provided in the embodiment of the present application. Fig. 20 for Fig.19 A partial enlarged view of the middle VV area. Fig.21 A position relationship diagram of the blocking structure, the second side wall, the fourth subsection of the first annular seal and the sealing bracket provided in the embodiment of the present application. Fig.19 , Fig. 20 and Fig.21As shown, the sealing portion 332 includes a first sealing sub-portion 3321, a second sealing sub-portion 3322, a third sealing sub-portion 3323 and a fourth sealing sub-portion 3324 which are connected end to end, wherein the first sealing sub-portion 3321 and the third sealing sub-portion 3323 are arranged opposite to each other along the X-axis direction, the second sealing sub-portion 3322 and the fourth sealing sub-portion 3324 are arranged opposite to each other along the Z-axis direction, and along the Z-axis direction, the second sealing sub-portion 3322 is located on the side of the fourth sealing sub-portion 3324 away from the fourth division 94 of the first annular seal 90. A blocking structure 110 is arranged in two gaps surrounded by the annular support portion 331, the second side wall 8232, the fourth sealing sub-portion 3324 of the sealing portion 332 and the fourth sub-portion 94 of the first annular seal 90, that is, one of the surfaces of the blocking structure 110 is in contact with the fourth sealing sub-portion 3324 of the sealing portion 332, one of the surfaces is in contact with the second side wall 8232, and one of the surfaces is in contact with the fourth sub-portion 94 of the first annular seal 90, and the blocking structure 110 is overpressured, that is, when the blocking structure 110 is in contact with the fourth sealing sub-portion 3324 of the sealing portion 332, the second side wall 8232, and the fourth sub-portion 94 of the first annular seal 90, there is no gap, and the blocking structure 110 can prevent the gas in the front cavity Q1 from being transmitted to the entire machine cavity through the gap, thereby further ensuring the sealing effect.

[0113] In this case, the width W2 of the blocking structure 110 in the X-axis direction is greater than or equal to 0.6 mm and less than or equal to 2 mm. In this way, the blocking structure 110 will not fail to achieve the sealing effect due to its small width, nor will it occupy too much space in the whole machine cavity due to its large width.

[0114] For example, the width W2 of the blocking structure 110 in the X-axis direction includes 0.6 mm, 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm or 2 mm. For the type of the blocking structure 110, the embodiment of the present application does not limit the type of the blocking structure 110, and those skilled in the art can select it according to actual conditions. For example, the blocking structure 110 can be, for example, a glue dispenser or a soft glue.

[0115] In this case, continue to see Fig.21 The blocking structure 110 and the annular sealing portion 332 are integrally formed. With this arrangement, when preparing the annular sealing portion 332, the blocking structure 110 is prepared. There is no need to prepare the blocking structure 110 separately, which simplifies the process steps and reduces costs. It can also ensure that there is no gap between the blocking structure 110 and the annular sealing portion 332, thereby further ensuring the sealing effect.

[0116] In order to further improve the sealing effect, the air in the front cavity Q1 is prevented from being transmitted to the entire cavity through the gap between the blocking structure 110 and the fourth subsection 94 of the first annular seal 90, see Fig. 22 and Fig.23 , Fig. 22 A position relationship diagram of the blocking structure, the second side wall, the fourth subsection of the first annular seal, the sealing portion and the auxiliary structure provided in an embodiment of the present application, Fig.23 for Fig. 22 A magnified image of the UU region. Fig. 22 and Fig.23 As shown, an auxiliary structure 120 is provided at the area where the blocking structure 110 is connected to the fourth division 94 of the first annular seal 90. The auxiliary structure 120 is used to shield the area where the blocking structure 110 is connected to the fourth division 94 of the first annular seal 90, and the area where the blocking structure 110 is connected to the fourth division 94 of the first annular seal 90 is sealed by the auxiliary structure 120.

[0117] The type of the auxiliary structure 120 is not limited in the embodiment of the present application, and those skilled in the art can select the type according to the actual situation. For example, the auxiliary structure 120 includes silicone or UV glue. For example, the auxiliary structure 120 can be formed by dispensing glue at the area where the blocking structure 110 is connected to the fourth subsection 94 of the first annular seal 90.

[0118] It should be noted that the above example is based on the example that the auxiliary structure 120 is located in the front cavity Q1, but it does not constitute a limitation on the present application. Fig.24 , Fig.24 This is another positional relationship diagram of the blocking structure, the second side wall, the fourth subsection of the first annular seal, the sealing portion, and the auxiliary structure provided in the embodiment of the present application. Fig.24 As shown, an auxiliary structure 120 is provided at the region where the blocking structure 110 connects with the fourth subsection 94 of the first annular seal 90, and the auxiliary structure 120 is located outside the front cavity Q1. When the auxiliary structure 120 is arranged outside the front cavity Q1, it is convenient to arrange the auxiliary structure 120 and simplify the process steps.

[0119] In addition, through Fig.21 , Fig. 22 and Fig.24It can be seen that when the blocking structure 110 is arranged in the two gaps surrounded by the annular support portion 331, the second side wall 8232, the fourth sealing sub-portion 3324 of the sealing portion 332 and the fourth sub-portion 94 of the first annular seal 90, the blocking structure 110, the fourth sub-portion 94 of the first annular seal 90, the first sealing sub-portion 3321 of the sealing portion 332, the second sealing sub-portion 3322, the third sealing sub-portion 3323, the support portion 331 and the second side wall 8232 can form a sealed cavity without the need to arrange the fourth sealing sub-portion 3324. In other words, see Fig.25 , Fig.25 Another positional relationship diagram of the blocking structure, the second side wall, the fourth subsection of the first annular seal, the sealing part and the auxiliary structure provided in the embodiment of the present application. The annular sealing part 332 has an opening, and the opening has two opposite ends, namely a first end 3325 and a second end 3326, wherein one end of the blocking structure 110 in one gap is connected to the first end 3325, and the other end is in contact with the fourth subsection 94 of the first annular seal 90, and the blocking structure 110 in another gap is connected to the second end 3325, and the other end is in contact with the fourth subsection 94 of the first annular seal 90. Exemplarily, the first sealing subsection 3321, the second sealing subsection 3322, the third sealing subsection 3323 and the blocking structure 110 are in a "U" shape, and the two end points of the "U" shape are in contact with the fourth subsection 94 of the first annular seal 90 respectively to complete the sealing. In this way, the structure of the sealing part 332 is simple, and materials can be saved and costs can be reduced.

[0120] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A speaker module, characterized in that: include: An inner core and a side shell, wherein the inner core is located in the side shell and divides the area surrounded by the side shell into a front cavity and a rear cavity; the side shell comprises a first surface and a second surface opposite to each other, and the second surface is annular; The speaker module has a sound outlet channel, and the sound outlet channel is communicated with the front cavity; The second surface has a notch, and the notch connects the area surrounded by the second surface and the sound outlet channel.

2. The speaker module according to claim 1, characterized in that: The side shell body has a hole formed therein to form the sound outlet channel.

3. The speaker module according to claim 2, characterized in that: A local area of ​​the second surface is recessed in a direction from the second surface to the first surface to form the sound outlet channel, and an opening of the sound outlet channel on the second surface is the notch.

4. An electronic device, characterized in that: include: The middle frame includes an appearance member and a support member, wherein the appearance member is annular, the support member is located in the area surrounded by the appearance member, and the appearance member is provided with a sound outlet hole; A display module and a back cover, wherein the support member is located between the display module and the back cover, and the display module, the appearance member of the middle frame and the back cover form a whole machine cavity; The speaker module according to any one of claims 1 to 3, wherein the speaker module is located in the whole machine cavity and on a side of the support member away from the display module; A sealing bracket, located at a gap between the appearance member and the side housing, the sealing bracket is located at a side of the side housing facing the appearance member, and the sealing bracket exposes the sound outlet hole; a first annular seal, located between the second surface of the side shell and the support member, and between the seal bracket and the support member; The front cavity is at least surrounded by the inner core, the side shell, the support member, the sealing bracket and the first annular sealing member.

5. The electronic device according to claim 4, characterized in that: The sealing bracket comprises a supporting portion and a sealing portion, both of which are ring-shaped, and the sealing portion is fixed to a side of the supporting portion away from the appearance member.

6. The electronic device according to claim 5, characterized in that: The electronic device further comprises a blocking structure located in a gap formed by the supporting portion, the side housing, the sealing portion and the first annular sealing member.

7. The electronic device according to claim 6, characterized in that: When the sealing bracket comprises a supporting portion and a sealing portion, the blocking structure and the sealing portion are integrally formed.

8. The electronic device according to claim 6, characterized in that: The blocking structure is in the shape of an elongated strip, and along a first direction, two opposite ends of the elongated blocking structure are in contact with the sealing portion and the first annular sealing member respectively, and the first direction is perpendicular to the plane where the supporting member is located; Along a second direction, two opposite surfaces of the long strip-shaped blocking structure are in contact with the side shell and the supporting portion respectively, and the second direction is perpendicular to the first direction.

9. The electronic device according to claim 6, characterized in that: The sealing portion has an opening, and includes a first end and a second end located at both sides of the opening. The blocking structure is located between the first end and the first annular seal, and between the second end and the first annular seal.

10. The electronic device according to claim 9, characterized in that: The sealing portion and the blocking structure are in a "U" shape.

11. The electronic device according to any one of claims 6 to 10, characterized in that: The width of the blocking structure in the third direction is greater than or equal to 0.6 mm and less than or equal to 2 mm; The third direction is perpendicular to the first direction, and the first direction is perpendicular to the plane where the support member is located.

12. The electronic device according to any one of claims 6 to 10, characterized in that: The blocking structure includes glue or soft glue.

13. The electronic device according to claim 12, characterized in that: When the blocking structure includes soft glue, the blocking structure is located in a gap surrounded by the support part, the side shell, the sealing part and the first annular seal, so that there is no gap between the blocking structure and the support part, the side shell, the sealing part and the first annular seal.

14. The electronic device according to any one of claims 6 to 10, characterized in that: An auxiliary structure is provided at the area where the blocking structure is connected to the first annular seal, and the auxiliary structure is used to shield the area where the blocking structure is connected to the first annular seal.

15. The electronic device according to claim 14, characterized in that: The auxiliary structure includes silica gel or UV glue; or, The auxiliary structure is formed by a dispensing process; or, The auxiliary structure is located outside the front cavity.

16. The electronic device according to claim 4, characterized in that: A supporting hole is formed on the supporting member, and an orthographic projection of the supporting hole on the plane where the supporting member is located overlaps with an orthographic projection of the core on the plane where the supporting member is located; The electronic device further comprises a second annular seal, which is located between the support member and the display module and is arranged around the edge of the support hole.

17. The electronic device according to claim 16, characterized in that: The display module is arranged on the support member via an adhesive layer, and the adhesive layer is the second annular sealing member.

18. The electronic device according to claim 4, characterized in that: The rear cavity is communicated with the whole machine cavity.

19. The electronic device according to claim 4, characterized in that: The first annular seal comprises a first edge and a second edge, the second edge is arranged around the first edge, a distance between the first edge and the second edge is W1, and 0.8 mm≤W1≤2 mm.

20. The electronic device according to claim 4, characterized in that: The first annular sealing member includes foam, foam adhesive, glue or adhesive backing.

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