Electronic device

Abstract

The invention provides electronic equipment, relates to the technical field of terminals, and can solve a new acoustic problem caused by an open front cavity. The electronic equipment comprises a first structural member, a middle frame, a second structural member, a sound production device and a supporting member, the middle frame comprises an annular frame and a middle plate located in the frame. In the thickness direction of the electronic equipment, the first structural member and the second structural member are located on the two sides of the middle plate respectively, a cavity is defined by the frame, the first structural member and the second structural member, and the sound production device is located in the cavity and located on the side, away from the first structural member, of the middle plate. The sounding device is communicated with the first structural member, and the supporting member is located between the sounding device and the first structural member and covers the part of the opening.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of terminal, and in particular, to an electronic device. BACKGROUND

[0002] Speaker and earpiece and other sound generating devices are widely used in various electronic devices (such as mobile phones, tablet computers and other terminals) as electro-acoustic transducer devices.

[0003] With the development of thin and light electronic devices, the thickness of the electronic device is gradually reduced, which reduces the height of the sound generating device front cavity, thereby causing abnormal audio playback, such as noise, abnormally small sound, or uneven sound playback and other problems. To this end, the related art opens a slot on the middle frame to make the sound generating device communicate with the screen or back cover and other structural members to achieve an open front cavity, thereby increasing the height of the front cavity. However, the open front cavity can cause new acoustic problems. SUMMARY

[0004] The present application provides an electronic device that can solve the new acoustic problems caused by the open front cavity.

[0005] In a first aspect, an electronic device is provided. The electronic device includes a first structural member, a middle frame, a second structural member, a sound generating device, and a support member. The middle frame includes a ring-shaped bezel and a middle plate located in the bezel. In a first direction, the first structural member and the second structural member are located on both sides of the middle plate, respectively. The bezel, the first structural member, and the second structural member surround to form a cavity. The sound generating device is located in the cavity and on a side of the middle plate away from the first structural member. The middle plate is provided with an opening hole corresponding to the position of the sound generating device. The sound generating device and the first structural member are in communication through the opening hole to form a front cavity of the sound generating device. The support member is located between the sound generating device and the first structural member and covers part of the opening hole.

[0006] In this way, the sound generating device and the first structural member are in communication, and a fixed-position support member is provided between the sound generating device and the first structural member to prevent the first structural member at the front cavity from being pressed and recessed, thereby avoiding the problem of irregular vibration of the diaphragm of the sound generating device caused by the change in air pressure in the front cavity due to the pressing and recessing, and solving the noise problem, i.e., the pressing abnormal sound problem. At the same time, in the first direction (i.e., the thickness direction of the electronic device), the sound generating device and the projection area of the first opening on the middle frame overlap, reducing the overhanging area of the first structural member at the first opening. In this way, the vibration mode of the first structural member is changed, so that the vibration frequency of the first structural member avoids the frequency range in which the sound generating device normally operates, thereby solving the problem of front cavity resonance.

[0007] For example, the electronic device can be a foldable electronic device. When the electronic device is a foldable electronic device, the first structural component can be the inner screen as described below, the second structural component can be the outer screen as described below, the middle frame is the first middle frame as described below, the middle plate is the first middle plate as described below, and the border is the first border as described below.

[0008] For example, the electronic device can be a foldable electronic device. When the electronic device is a foldable electronic device, the first structural component can be the inner screen as described below, the second structural component can be the back cover as described below, the middle frame is the second middle frame as described below, the middle plate is the second middle plate as described below, and the edge is the second edge as described below.

[0009] For example, the first structural component can be a plastic back cover, i.e., a battery cover, and the second structural component can be a display screen.

[0010] For example, the electronic device can be a non-foldable electronic device. When the electronic device is a non-foldable electronic device, the first structural component can be a flexible display screen and the second structural component can be a back cover.

[0011] For example, the sound-generating device may be a speaker module as described below, or it may be a handset.

[0012] According to the first aspect, or any implementation of the first aspect above, the support member is fixed to the middle plate. In this way, while ensuring the position of the support member is fixed, the support member can be closer to the first structural member, thereby effectively preventing the first structural member from being pressed and indented, and solving the problem of abnormal noise when pressed.

[0013] According to the first aspect, or any of the above implementations of the first aspect, the support component is integrally formed with the middle plate. In this way, reusing a portion of the middle plate as a support component can save process materials and reduce material costs.

[0014] According to the first aspect, or any implementation of the first aspect above, the support component is set independently of the mid-plate. This allows for a thinner support component, thereby increasing the overall height of the front cavity and improving audio performance.

[0015] For example, the support member is an aluminum alloy sheet, an aluminum-magnesium alloy sheet, or a titanium alloy sheet. In this way, while reducing the thickness of the support member, the rigidity of the support member can be enhanced, preventing the support member from deforming when pressed by the first structural member, thereby avoiding abnormal pressing noise caused by deformation of the support member.

[0016] According to the first aspect, or any implementation of the first aspect above, the electronic device further includes a battery and a battery cover, wherein the battery cover is located between the battery and the first structural member along a first direction; the battery cover includes an extension extending to the projection area of ​​the opening, and the extension serves as a support member. Thus, by extending the battery cover and using the extension as a support member, the battery cover protects the battery while simultaneously resolving the issues of pressing noise and front cavity resonance in the open front cavity structure. Furthermore, the battery cover and the support member can be manufactured in the same process flow, thereby saving process steps and reducing process costs.

[0017] According to the first aspect, or any implementation of the first aspect above, the support member is elongated, with a sound outlet hole on its edge, and the support member extends from the front cavity towards the sound outlet hole. In this way, the support member will not obstruct the airflow carrying sound waves, allowing audio to be played normally.

[0018] According to the first aspect, or any of the above implementations of the first aspect, the number of support components is 1.

[0019] According to the first aspect, or any implementation thereof, the sound-generating device includes a core, which includes a diaphragm assembly and a magnetic circuit system. The magnetic circuit system is located on the side of the diaphragm assembly facing away from the first structural member. The diaphragm assembly includes a diaphragm and a dome, with the diaphragm surrounding the dome. The dome includes a main body and a recess. At least a portion of the main body protrudes towards the first structural member and is located in the area where the opening and the support do not overlap. The recess protrudes towards the magnetic circuit system, extending through the dome along the extension direction of the support and covering the support. The thickness of the magnetic circuit system at at least a portion of the main body is greater than the thickness of the magnetic circuit system at the recess. Thus, by increasing the thickness of the magnetic circuit system, the corresponding electro-transfer coefficient BL is larger. With the driving current I remaining constant, the driving force BIL of the sound-generating device is larger, thereby improving the low-frequency performance of the sound-generating device. Alternatively, with the driving force BIL of the sound-generating device remaining constant, the driving current I can be reduced, thereby reducing power consumption.

[0020] For example, the magnetic circuit system includes a magnet and a magnetic guide plate stacked along a first direction; the thickness of the magnet at at least a portion of the main body is greater than the thickness of the magnet at the sink position.

[0021] For example, the thickness of the magnetic plate at at least a portion of the main body is greater than the thickness of the magnetic plate at the sink position.

[0022] For example, the thickness of at least a portion of the magnet corresponding to the main body is greater than the thickness of the magnet corresponding to the sink position, and the thickness of at least a portion of the magnetic plate corresponding to the main body is greater than the thickness of the magnetic plate corresponding to the sink position.

[0023] According to the first aspect, or any implementation of the first aspect above, the core further includes a protrusion located on the side of the magnetic circuit system facing the first structural member. The protrusion protrudes towards the first structural member relative to the diaphragm assembly and is fixed in position; the protrusion is fixedly connected to the support member. In this way, the support member and the core form a larger rigid body, which can better prevent the first structural member from being pressed and dented, thus solving the pressing noise and front cavity resonance problems of the open front cavity structure.

[0024] According to the first aspect, or any implementation of the first aspect above, the core further includes a protrusion located on the side of the magnetic circuit system facing the first structural member. The protrusion protrudes towards the first structural member relative to the diaphragm assembly and is fixed in position. The protrusion is fixedly connected to the first structural member and serves as a support member. In this way, by directly using the protrusion of the core as a support member, the problems of pressing noise and front cavity resonance in the open front cavity structure can be solved, while saving the hardware cost of the support member.

[0025] For example, the core includes a first sound-emitting unit and a second sound-emitting unit. The first sound-emitting unit includes a first diaphragm assembly, a first voice coil, and a first magnetic circuit system. The second sound-emitting unit includes a second diaphragm assembly, a second voice coil, and a second magnetic circuit system. The core also includes a frame, on which both the first and second sound-emitting units are fixed. The frame includes a peripheral portion and a middle portion located within and connected to the peripheral portion. The middle portion separates the first and second sound-emitting units. The middle portion is a protrusion.

[0026] For example, the dome is annular and surrounds the outer periphery of the protrusion. Attached Figure Description

[0027] Figure 1 A structural diagram of an electronic device in an unfolded state, provided in an embodiment of this application;

[0028] Figure 2 for Figure 1 The diagram shows the structure of the electronic device in a folded state.

[0029] Figure 3 for Figure 1 A perspective view of the support device in the shown electronic device;

[0030] Figure 4 for Figure 1 An exploded view of a portion of the structure of the electronic device shown.

[0031] Figure 5 A perspective view of a speaker module provided in an embodiment of this application;

[0032] Figure 6 for Figure 5 The exploded view of the speaker module shown;

[0033] Figure 7 A schematic diagram of a kernel structure provided in an embodiment of this application;

[0034] Figure 8 for Figure 7 The exploded view of the kernel is shown below;

[0035] Figure 9 for Figure 7 The image shows a cross-sectional view of the kernel at point AA.

[0036] Figure 10 for Figure 1 A cross-sectional view of the electronic device shown at point BB;

[0037] Figure 11 for Figure 1 Another cross-sectional view of the electronic device shown at BB;

[0038] Figure 12 for Figure 1 A cross-sectional view of the electronic device shown at point C;

[0039] Figure 13 for Figure 1 A cross-sectional view of the electronic device shown along the BB direction;

[0040] Figure 14 A perspective view of a kernel provided in an embodiment of this application;

[0041] Figure 15 A cross-sectional view of a kernel provided in an embodiment of this application;

[0042] Figure 16 A cross-sectional view of another kernel provided in an embodiment of this application;

[0043] Figure 17 A perspective view of another kernel provided in an embodiment of this application;

[0044] Figure 18 for Figure 17 The kernel in Figure 1 A cross-sectional view of the electronic device shown at point C;

[0045] Figure 19 A perspective view of yet another kernel provided in an embodiment of this application;

[0046] Figure 20 for Figure 19 A cross-sectional view of the kernel in the image;

[0047] Figure 21 for Figure 19 The kernel in Figure 1A cross-sectional view of the electronic device shown at point BB;

[0048] Figure 22 for Figure 19 The kernel in Figure 1 A cross-sectional view of the electronic device shown at point C.

[0049] Figure label:

[0050] 1. Electronic equipment;

[0051] 10. Support device; 11. First middle frame; 12. Second middle frame; 13. Rotation mechanism; 14. Back cover; 111. First middle plate; 112. First frame; 11a. Sound outlet; 1111. Opening;

[0052] 20. Screen assembly; 21. Inner screen; 22. Outer screen; 211. First part; 212. Second part; 213. Third part;

[0053] 30. Circuit board;

[0054] 40. Battery; 41. Battery cover; 411. Extension;

[0055] 50. Loudspeaker module; 50a. Sound outlet channel; 51. Housing; 52. Core; 51a. Fixing part; 511. Front shell; 512. Rear shell; 5111. First cover plate; 5112. First side frame; 5121. Flat plate part; 5122. Second side frame; 521. Frame; 523. Magnetic circuit system; 522. Vibration system; 5211. Top surface; 5212. Bottom surface; 5223. Voice coil; 5221. Diaphragm; 5222. Dome; 52221. Overlap edge; 5222 2. Main body; 52223. Sink; 5222a. First surface; 5222b. Second surface; 52222a. First recess; 5231. Magnet; 5232. First magnetic plate; 5233. Second magnetic plate; 52311. Central magnet; 52312. Side magnet; 52331. Central magnetic plate; 52332. Annular magnetic plate; 52331a. Second recess; 5101. First sound-emitting unit; 5102. Second sound-emitting unit; 5100. Protrusion;

[0056] 60. Support components. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0059] The terms "first" and "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order of objects. For example, "first target object" and "second target object," etc., are used to distinguish different target objects, not to describe a specific order of target objects.

[0060] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0061] In the description of the embodiments in this application, unless otherwise stated, "multiple" means two or more. For example, multiple processing units means two or more processing units; multiple systems means two or more systems.

[0062] Speaker modules are crucial acoustic components of portable electronic devices, serving as electroacoustic transducers to convert electrical signals into sound signals. With the trend towards thinner and lighter devices like smartphones and tablets, the size design of speaker modules has become increasingly challenging. Simultaneously, consumers are demanding higher performance from electronic devices, requiring speaker modules to deliver superior sound quality.

[0063] This application provides an electronic device, which is a type of electronic device with a speaker module. Exemplary examples include, but are not limited to, mobile phones, tablet personal computers, laptop computers, personal digital assistants (PDAs), personal computers, laptops, in-vehicle devices, wearable devices (including but not limited to smart bracelets, smartwatches, smart head-mounted displays, smart glasses, etc.), portable music players, radios, televisions, and speakers.

[0064] The electronic device can be a foldable electronic device (e.g., a foldable phone). For foldable electronic devices, depending on different usage needs, the device can be unfolded or folded. Of course, the electronic device can also be a non-foldable electronic device, such as a candybar phone.

[0065] Figure 1 This is a structural diagram of the electronic device provided in the embodiments of this application when it is in an unfolded state. (Refer to...) Figure 1 As shown, this embodiment uses a foldable mobile phone as an example for explanation. Figure 1 The electronic device 1 is in an unfolded state. The electronic device 1 includes a support device 10 and a screen assembly 20. The screen assembly 20 includes an inner screen 21 and an outer screen 22.

[0066] Understandable Figure 1 The electronic device 1 is shown only schematically, and the actual shape, size, location, and construction of these components are not subject to change. Figure 1 Restrictions.

[0067] The screen assembly 20 is used to display information and provide an interactive interface for the user. In various embodiments of this application, the inner screen 21 is a flexible display screen, such as an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (MLED) display screen, a micro organic light-emitting diode (MLED) display screen, or a quantum dot light-emitting diode (QLED) display screen. The outer screen 22 can be a flexible display screen or a non-flexible display screen.

[0068] The inner screen 21 can switch between an unfolded state and a folded state. In the folded state, the inner screen 21 can be folded into a first part 211 and a second part 212. The inner screen 21 also includes a third part 213 located between the first part 211 and the second part 212. When the inner screen 21 is in the unfolded state, the first part 211, the second part 212, and the third part 213 are coplanar and face the same direction. In this state, a large-screen display can be achieved, providing users with richer information and a better user experience.

[0069] Figure 2 for Figure 1 The diagram shows the structure of the electronic device in its folded state. (Combined with...) Figure 1 and Figure 2 As shown, the electronic device 1 in the figure is in a folded state. When the inner screen 21 is in a folded state, the third part 213 is in a bent state, and the first part 211 ( Figure 2 (not shown in the image) and Part 212 ( Figure 2 (Not shown in the image). In this state, the inner screen 21 is not visible to the user.

[0070] The support device 10 is used to support the inner screen 21 and the outer screen 22, and allows the inner screen 21 to switch between an unfolded state and a folded state. Figure 3 for Figure 1 A perspective view of the support device in the shown electronic device. (Refer to...) Figure 3 As shown, the support device 10 includes a middle frame, a rotating mechanism 13, and Figure 2 The back cover 14 is included. The middle frame includes a first middle frame 11 and a second middle frame 12. It is understood that... Figure 3 The support device 10 is shown only schematically, and the actual shape, size, position, and construction of these components are not subject to change. Figure 3 Restrictions.

[0071] The support device 10 has a support surface that can be used to support the inner screen 21. With the support of the support surface, the inner screen 21 can be made into a flat plate shape when unfolded, and the display surface of the inner screen 21 can be made flat.

[0072] One side of the first middle frame 11 is used for fixing and supporting. Figure 1 The first part 211 of the inner screen 21. Specifically, the first middle frame 11 has a support surface M1, and the first middle frame 11 is fixed and supported by the support surface M1. Figure 1 The first portion 211 of the inner screen 21. Exemplarily, the connection between the supporting surface M1 and the first portion 211 includes, but is not limited to, adhesive bonding. The other side of the first frame 11 is used to fix the outer screen. One side of the second frame 12 is used to fix and support it. Figure 1The second part 212 of the inner screen 21. Specifically, the second frame 12 has a support surface M2, and the second frame 12 is fixed and supported by the support surface M2. Figure 1 The second part 212 of the inner screen 21. Exemplarily, the connection between the supporting surface M2 and the second part 212 includes, but is not limited to, adhesive bonding. The other side of the second frame 12 is connected to the back cover 14. The rotation mechanism 13 is used to support the third part 213 of the inner screen 21. Furthermore, the rotation mechanism 13 is connected between the first frame 11 and the second frame 12, which are rotatably connected via the rotation mechanism 13, thereby enabling relative rotation between the first frame 11 and the second frame 12.

[0073] Figure 4 for Figure 1 An exploded view of a portion of the structure of the electronic device shown. (Refer to...) Figure 4 As shown in the figure, the exploded structure of one side of the first middle frame 11 of the support device 10 is illustrated. The electronic device 1 also includes a circuit board 30, a battery 40, a battery cover (not shown), an earpiece (not shown), and a speaker module 50. The battery cover is located at the mounting position of the battery 40 and is located on the side of the battery 40 facing the inner screen, mainly serving to protect the battery 40. The first middle frame 11 includes a first middle plate 111 and a first frame 112 surrounding the first middle plate 111. The inner screen 21, the outer screen 22, and the first frame 112 form a first cavity, which can be used to accommodate the circuit board 30, the battery 40, and the speaker module 50. It is understood that the second middle frame may include a second middle plate and a second frame surrounding the second middle plate. The inner screen, the back cover, and the second frame form a second cavity. The circuit board 30, the battery 40, and the speaker module 50 may also be located in the second cavity. Alternatively, the circuit board 30 and the speaker module 50 may be located in the first cavity, and the battery 40 may be located in the second cavity. Alternatively, the circuit board 30 may be located in the first cavity, and both the first and second cavities may contain the battery 40 and the speaker module 50, etc. The following explanation uses the example of the circuit board 30, battery 40, and speaker module 50 being located in the first cavity.

[0074] The first middle frame 11 is generally rectangular. For ease of description in the following embodiments, an XYZ coordinate system is established. Specifically, the width direction of the first middle frame 11 is defined as the X-axis, the length direction as the Y-axis, and the thickness direction as the Z-axis. The X, Y, and Z axes are perpendicular to each other. It is understood that the coordinate system settings of the first middle frame 11 can be flexibly configured according to actual needs, and are not specifically limited here.

[0075] The circuit board 30 is used to integrate a control chip. The circuit board can be fixed to the first cavity by means of threaded connection, snap-fit, adhesive bonding, or soldering. In some embodiments, the circuit board 30 is electrically connected to the screen assembly 20, and the circuit board 30 is used to control the screen assembly 20 to display images or videos. The circuit board 30 can be a rigid circuit board, a flexible circuit board, or a rigid-flex circuit board.

[0076] The battery 40 is fixed within the first cavity. For example, the battery 40 is fixed within the first cavity by means of snap-fit, adhesive, or screw connection. The battery 40 provides power to the circuit board 30, screen assembly 20, and speaker module 50, etc.

[0077] The speaker module 50 is used to convert audio electrical signals such as music and speech into sound, enabling the electronic device 1 to support external audio playback. In the Z-axis direction, the speaker module 50 is located on the side of the first middle plate 111 opposite to the inner screen 21 (i.e., opposite to...). Figure 3 (The side opposite to the support surface M1 in the middle). The speaker module 50 is electrically connected to the circuit board 30. Specifically, the speaker module 50 has a sound output channel 50a. The sound signal output by the speaker module 50 is output through the sound output channel 50a. A sound outlet 11a is provided on the side of the first frame 112. The sound outlet 11a is connected to the sound output channel 50a. The sound signal output by the sound output channel 50a is further output to the outside of the electronic device 1 through the sound outlet 11a. The sound outlet 11a may be located on the short frame (i.e., the side frame opposite each other in the X-axis direction) of the first frame 112. Alternatively, the sound outlet 11a may also be located on the long frame (i.e., the side frame opposite each other in the Y-axis direction) of the first frame 112. This embodiment of the application is described with the example of the sound outlet 11a being located on the short frame of the first frame 112.

[0078] It should be noted that in electronic devices, there can be multiple speaker modules 50. In some embodiments, in the Z-axis direction, the speaker module 50 can also be located on the side of the second middle plate away from the inner screen 21. This application embodiment is illustrated by taking the speaker module 50 located on the side of the first middle plate 111 away from the inner screen 21 as an example.

[0079] The speaker module 50 is described in detail below.

[0080] Figure 5 A perspective view of a speaker module provided in an embodiment of this application; Figure 6 for Figure 5 An exploded view of the speaker module shown. (Refer to...) Figure 5 and Figure 6As shown, the speaker module 50 includes a housing 51 and a core 52. The core 52 is located inside the housing 51, and the housing 51 serves to fix and protect the core 52. The housing 51 is provided with a sound outlet channel 50a, through which the sound generated by the core 52 can be transmitted to the outside of the housing 51.

[0081] It should be noted that, Figure 5 and Figure 6 The speaker module 50 is shown only schematically, and the actual shape, size, location, and construction of these components are not subject to change. Figure 5 and Figure 6 The limitations. Additionally. Figure 5 coordinate system and Figure 4 The coordinate systems in the text are represented by the same coordinate system. That is, Figure 5 The various components within the middle speaker module 50 Figure 5 The orientation relationship in the coordinate system shown is related to the application of the speaker module 50. Figure 4 When the electronic device 1 shown is inside, its various components are... Figure 4 The orientation relationships are the same in the coordinate system shown.

[0082] The housing 51 is provided with a fixing part 51a. The fixing part 51a includes, but is not limited to, through holes, threaded holes, snap fasteners, slots, and limiting steps. Figure 5 and Figure 6 In the illustrated embodiment, the fixing part 51a includes two through holes. These through holes are used to engage with screws to fix the speaker module 50 to the mounting surface. Figure 1 On the first middle frame inside the electronic device 1 shown.

[0083] The materials of the housing 51 include, but are not limited to, metal and plastic. In some embodiments, the housing 51 is made of plastic, which is low in cost and easy to mold, thus reducing the processing cost of the speaker module 50.

[0084] The housing 51 can be a single structural unit or assembled from multiple parts. In some embodiments, the housing 51 includes a front housing 511 and a rear housing 512. The housing 51 is assembled from the front housing 511 and the rear housing 512, which helps to reduce the molding and assembly difficulty of the housing 51.

[0085] Specifically, the front shell 511 includes a first cover plate 5111 and a first side frame 5112. The first side frame 5112 is arranged around the edge of the first cover plate 5111. One end of the first side frame 5112 is connected to the first cover plate 5111, and the other end extends away from the first cover plate 5111. A first stepped surface is provided at the end of the first side frame 5112 away from the first cover plate 5111, and the first stepped surface is arranged around the circumference of the first side frame 5112. The front shell 511 connects with the first side frame 5111 via the first stepped surface. Figure 4The rear shell 512 is fixed in the middle.

[0086] The rear shell 512 includes a flat plate portion 5121 and a second side frame 5122. The second side frame 5122 is disposed on the inner surface of the flat plate portion 5121 and is fixed to the first step surface of the front shell 511. The rear shell 512 and the front shell 511 form an accommodating space. This enables the assembly of the front shell 511 and the rear shell 512. This structure is simple and helps reduce the molding and assembly difficulty of the shell 51. The "inner surface of the flat plate portion 5121" refers to the side surface of the flat plate portion 5121 facing the internal space of the shell 51.

[0087] The core 52 is disposed within the aforementioned receiving space, dividing the receiving space into a front cavity and a rear cavity. Specifically, the core 52 is disposed within the front shell 511. The core 52 has a fixing surface, which is formed by the outer edge portion of the diaphragm (described below). The core 52 is fixed to the front shell 511 by means of this fixing surface. The front shell 511 has a second stepped surface, the shape and size of which are adapted to the shape and size of the fixing surface. Specifically, the second stepped surface is disposed on the inner surface of the first side frame 5112. Here, "the inner surface of the first side frame 5112" refers to the surface of the first side frame 5112 facing the internal space of the shell 51. The fixing surface of the core 52 is fixed to the second stepped surface. Thus, the core 52 can be disposed within the front shell 511, and the core 52 can be fixed to the front shell 511.

[0088] The core 52 is disposed within the front shell 511. In the Z-axis direction, the core 52 is stacked with the first cover plate 5111 of the shell 51, and the first cover plate 5111 is located on the side of the core 52 facing the inner screen, and the first cover plate 5111 is located on the side of the first middle plate away from the inner screen (i.e., with). Figure 3 The first middle frame 11 (the side opposite to the support surface M1). The core 52, part of the first side frame 5112 and the first cover plate 5111 form a front cavity, and the rear shell 512 and part of the first side frame 5112 form a rear cavity. The first side frame 5112 is provided with a sound outlet channel 50a, which communicates with the front cavity 501. The airflow generated in the front cavity 501 of the speaker module 50 can be discharged through the sound outlet channel 50a to form sound. The sound outlet channel 50a and Figure 1 The sound outlet 11a on the first middle frame of the electronic device 1 shown is connected.

[0089] The following is a detailed explanation of kernel 52.

[0090] It should be noted that when describing the various components in kernel 52 below, the term "top" refers to the part of the component facing the front cavity, and "bottom" refers to the part of the component away from the front cavity.

[0091] In addition, the shapes of the components in kernel 52 described below are "rectangles", which represent the approximate shapes. The corners between adjacent sides may or may not be rounded.

[0092] Figure 7 A schematic diagram of a kernel structure provided in an embodiment of this application; Figure 8 for Figure 7 The image shows an exploded view of the kernel. (Refer to...) Figure 7 and Figure 8 As shown, the core 52 includes a frame 521, a magnetic circuit system 523, and a vibration system 522. The magnetic circuit system 523 generates a magnetic field, and the vibration system 522 vibrates under the action of this magnetic field, causing the air in the front cavity to vibrate, thereby outputting a sound signal. The frame 521 serves as the basic support structure of the core 52, supporting the vibration system 522 and fixing the magnetic circuit system 523 to ensure stable vibration of the vibration system 522 and enable the magnetic circuit system 523 to generate a stable magnetic field. For example, the frame 521 may be made of, but is not limited to, metal or plastic.

[0093] Reference Figure 8 As shown, the two sides of the frame 521 in the Z-axis direction are the top surface 5211 and the bottom surface 5212, respectively. The top surface 5211 and the bottom surface 5212 are both annular surfaces arranged around the circumference of the frame 521. The vibration system 522 can be supported on the top surface 5211 of the frame 521, and the magnetic circuit system 523 can be connected and fixed to the bottom surface 5212 of the frame 521. There is a gap between the vibration system 522 and the magnetic circuit system 523, which forms the rear cavity of the speaker module 50.

[0094] Figure 9 for Figure 7 The image shows a cross-sectional view of the kernel at point AA. (Refer to...) Figure 9 As shown, the vibration system 522 includes a diaphragm assembly and a voice coil 5223. The edge of the diaphragm assembly is connected to the top surface 5211 of the frame 521, and the diaphragm assembly covers the entire area enclosed by the top surface 5211 of the frame 521. The diaphragm assembly divides the space within the housing 51 of the speaker module 50 into a front cavity and a rear cavity. The outer surface of the diaphragm assembly (the side of the diaphragm assembly facing away from the magnetic circuit system 523) and the housing 51 enclose the front cavity, and the inner surface of the diaphragm assembly (the side of the diaphragm assembly facing the magnetic circuit system 523) and the magnetic circuit system 523 and the frame 521 enclose the rear cavity. The voice coil 5223 is axially arranged along the Z-axis direction of the core 52, the top end of the voice coil 5223 is connected to the inner surface of the diaphragm assembly, and the bottom end of the voice coil 5223 is suspended.

[0095] The magnetic circuit system 523 includes an annular magnetic gap, and the bottom end of the voice coil 5223 extends into the annular magnetic gap. The magnetic circuit system 523 can generate... Figure 9The voice coil 5223, with its bottom end extending into the annular magnetic gap, is located within the closed magnetic circuit generated by the magnetic circuit system 523, as indicated by the middle arrow. When the voice coil 5223 is energized, it experiences an Ampere force along its axial direction under the influence of the magnetic field within the annular magnetic gap. This Ampere force is F = BLI, where B is the magnetic induction intensity of the magnetic field within the annular magnetic gap, L is the length of the conductor of the voice coil 5223, and I is the current intensity in the conductor of the voice coil 5223. Under the action of this Ampere force, the voice coil 5223 can move along its axial direction to drive the diaphragm assembly to vibrate.

[0096] It should be noted that the audio performance of the speaker module 50, especially its low-frequency performance, is mainly determined by the vibration amplitude of the diaphragm assembly of the core 52. The vibration amplitude of the diaphragm assembly is determined by the movement space of the voice coil 5223. In other words, the larger the movement space of the voice coil 5223, the greater the vibration amplitude of the diaphragm assembly, and the better the low-frequency performance of the speaker module 50. Therefore, the greater the Ampere force F, the greater the driving force acting on the voice coil 5223, resulting in a larger space for the voice coil 5223 to move along its axis, thereby driving a larger vibration amplitude of the diaphragm assembly, and thus better low-frequency performance of the speaker module 50. This can be achieved by increasing the value of at least one of the parameters B, I, and L. For example, on one hand, the Ampere force F can be increased by increasing the current intensity input by the electronic device to the voice coil 5223. On the other hand, the larger the volume of the magnetic circuit system 523 (including the volume of the magnet and / or the volume of the second magnetic plate mentioned below), the greater the electro-transfer coefficient BL. Therefore, the Ampere force F can also be increased by increasing the volume of the magnetic circuit system 523.

[0097] The diaphragm assembly of the vibration system 522 includes a diaphragm 5221 and a dome 5222. The diaphragm 5221 is a ring-shaped flexible structure, for example, the diaphragm 5221 is rectangular ring-shaped, and the outer edge of the diaphragm 5221 is connected to the top surface 5211 of the frame 521. The dome 5222 is located in the area encircled by the diaphragm 5221. The dome 5222 is a plate-shaped rigid structure, for example, the dome 5222 is rectangular plate-shaped, and the outer edge of the dome 5222 has an overlapping edge 52221. The overlapping edge 52221 of the dome 5222 is connected to the inner edge of the diaphragm 5221.

[0098] In this embodiment, the opposite two surfaces of the dome 5222 are defined as a first surface 5222a and a second surface 5222b, respectively, wherein the second surface 5222b is the side surface of the dome 5222 facing the vibration system 522. To ensure the reliability of the connection between the diaphragm 5221 and the dome 5222, the inner edge of the diaphragm 5221 can be connected to the first surface 5222a of the dome 5222 along the overlap of the diaphragm 5222. The voice coil 5223 is connected to the second surface 5222b of the dome 5222. When the core 52 is working, the voice coil 5223 moves up and down along its axis under the action of the magnetic field in the annular magnetic gap. The movement of the voice coil 5223 drives the dome 5222 to move up and down. The outer edge of the diaphragm 5221 is fixedly connected to the frame 521. The inner edge of the diaphragm 5221 can move with the movement of the dome 5222. Thus, the diaphragm 5221 swings with the movement of the dome 5222 and limits the displacement of the dome 5222. The entire diaphragm assembly vibrates with the movement of the voice coil 5223.

[0099] To increase the strength of the dome 5222, in some embodiments, the dome 5222 has a first recess 52222a, which is recessed toward the vibration system 522. The first recess 52222a may be annular.

[0100] The magnetic circuit system 523 may include a magnet 5231, a first magnetic guide plate 5232, and a second magnetic guide plate 5233, which are respectively disposed on both sides of the magnet 5231. The magnet 5231 is used to generate a magnetic field. The first magnetic guide plate 5232, the magnet 5231, and the second magnetic guide plate 5233 work together to form a magnetic circuit to drive the voice coil 5223 to move up and down along its axial direction. The magnet 5231 may include a central magnet 52311 and a side magnet 52312. The center of the central magnet 52311 may be located on the central axis of the voice coil 5223, and the side magnet 52312 surrounds the periphery of the central magnet 52311. There is a gap between the central magnet 52311 and the side magnet 52312, which forms an annular magnetic gap. A magnetic circuit is formed between the central magnet 52311 and the side magnets 52312. To ensure that the voice coil 5223 is in a balanced magnetic field, the side magnets 52312 surrounding the central magnet 52311 should be symmetrically arranged with the center of the central magnet 52311 as the center. The first magnetic plate 5232 is located on the side of the magnet 5231 facing away from the vibration system 522. The first magnetic plate 5232 is in magnetic contact with both the central magnet 52311 and the side magnets 52312 and is fixed together. The second magnetic plate 5233 is located on the side of the magnet 5231 facing the vibration system 522. In some embodiments, the second magnetic plate 5233 includes a central magnetic plate 52331 and an annular magnetic plate 52332. The central magnetic plate 52331 is disposed on the central magnet 52311 and is in magnetic contact with the central magnet 52311; the annular magnetic plate 52332 is disposed around the outer periphery of the central magnetic plate 52331 and is disposed on the side magnet 52312 and is in magnetic contact with the side magnet 52312.

[0101] In addition, a second recess 52331a can be formed on the side surface of the central magnetic plate 52331 facing the dome 5222. In the case where a first recess 52222a is provided on the dome 5222 that is recessed into the magnetic circuit system 523, a second recess 52331a is provided on the side surface of the central magnetic plate 52331 facing the dome 5222, and the second recess 52331a is directly opposite the first recess 52222a. When the voice coil 5223 drives the diaphragm assembly to vibrate, as the dome 5222 moves toward the central magnetic plate 52331, compared to the central magnetic plate 52331 without the second recess 52331a, the first recess 52222a can be embedded in the second recess 52331a, ensuring that the dome 5222 can fit against the central magnetic plate 52331, avoiding gaps between the dome 5222 and the central magnetic plate 52331, thus avoiding limiting the vibration space of the dome 5222, ensuring that the dome 5222 has a larger vibration amplitude, thereby improving the audio effect of the speaker module 50.

[0102] In this embodiment of the application, the core within the speaker module can be a single voice coil core (such as...). Figure 8 and Figure 9 As shown), it can also be a dual voice coil core (compared to a single voice coil core). For a dual voice coil core, in some embodiments, both voice coils jointly drive the same diaphragm assembly. In other embodiments, each voice coil independently drives a separate diaphragm assembly (e.g., ...). Figure 17 (As shown).

[0103] As mentioned earlier, the core divides the housing into a front cavity and a rear cavity. The front cavity can be further divided into a closed front cavity and an open front cavity. The closed front cavity is a relatively enclosed space located in front of the speaker diaphragm, formed by the speaker module's core and housing. (Refer to...) Figure 10 By opening a hole in the first cover plate of the front shell of the speaker module and simultaneously cutting a groove in the first middle plate 111 at the corresponding position, the core 52 is connected to the inner screen 21. At this time, the core 52, the shell, the first middle plate 111 and the inner screen 21 form an open front cavity C1 to increase the height of the front cavity of the speaker module and improve the audio experience.

[0104] Although the electronic device adopts an open front cavity structure, increasing the height of the front cavity, this open front cavity also brings new acoustic problems. For example, when a user plays audio using the electronic device, pressing the inner screen 21 corresponding to the speaker module location will cause noise in the played audio, and the user will feel a tingling sensation when touching the inner screen 21 corresponding to the speaker module location. Research has found that the root cause of the above problems is that the first middle plate 111 at the front shell opening (i.e., the opening on the first cover plate of the front shell) has been removed. At the front shell opening, the inner screen 21 lacks the support of the first middle plate 111. Since the inner screen 21 is a flexible display screen, it is relatively thin and soft. When the user presses the inner screen 21 at the front shell opening, the inner screen 21 will dent. During the denting process, the air pressure in the front cavity will change, thereby generating a force acting on the diaphragm of the speaker module, causing the diaphragm to vibrate polarized or irregularly, thus causing noise problems. In addition, when playing audio, the sound pressure and airflow in the front cavity will directly act on the inner screen 21, thereby causing the inner screen 21 to vibrate and causing the front cavity to resonate.

[0105] To address the issues of abnormal pressing noise and anterior cavity resonance in open anterior cavity structures, see [reference needed]. Figure 11 and Figure 12 This application provides a support scheme that can be applied to the aforementioned electronic device. The support scheme will be described below with reference to the accompanying drawings.

[0106] For example, Figure 11 for Figure 1 Another cross-sectional view of the electronic device shown at BB; Figure 12 forFigure 1 A cross-sectional view of the electronic device shown at CC, see reference. Figure 11 and Figure 12 As shown, the electronic device provided in this application embodiment also includes: a support member 60, which is located between the speaker module 50 and the inner screen 21 in the Z-axis direction, and covers a portion of the opening of the first middle plate 111 (i.e., the through hole formed by slotting in the first middle plate 111 when forming the open front cavity).

[0107] In this embodiment, the support member 60 can be a rigid body. When the inner screen 21 is pressed and indented, the support member 60 can fit against the inner screen 21, thereby preventing the inner screen 21 in the front cavity from being pressed and indented. This avoids the problem of irregular vibration of the speaker module diaphragm caused by air pressure changes in the front cavity due to the pressing and indentation, thus solving the noise problem, i.e., solving the problem of abnormal noise when pressed. At the same time, along the Z-axis direction, the support member 60 overlaps with the opening of the first middle plate 111, reducing the suspended area of ​​the inner screen 21 at the opening of the first middle plate 111. This changes the vibration mode of the inner screen 21, increasing the natural vibration frequency of the inner screen 21 and avoiding the normal operating frequency range of the speaker module 50, thereby solving the problem of front cavity resonance.

[0108] Considering that even with a large distance between the support member 60 and the inner screen 21, slight indentation may still occur on the inner screen 21 when pressed, in some embodiments, the support member 60 is fixed to the first intermediate plate 111. Since the position of the first intermediate plate 111 is fixed and it is fitted to the inner screen 21, fixing the support member 60 to the first intermediate plate 111 ensures that its position remains constant. This ensures that the support member 60 is fixed in position while allowing it to be closer to the inner screen 21, effectively preventing indentation of the inner screen 21 and resolving the issue of pressing noise. Furthermore, the surface of the support member 60 facing the inner screen 21 is flush with the surface of the first intermediate plate 111 facing the inner screen 21. Thus, the support member 60 is in close contact with the inner screen 21, completely preventing indentation of the inner screen 21 and thoroughly resolving the pressing noise and front cavity resonance problems of the open front cavity structure.

[0109] When the support member 60 is fixed to the first intermediate plate 111, a portion of the first intermediate plate 111 can be reused as the support member 60, that is, the support member 60 is formed directly on the first intermediate plate 111 during the fabrication of the first intermediate plate 111. Alternatively, the support member 60 can be set independently of the first intermediate plate 111, that is, the support member 60 is fabricated using a separate processing technology, and then the fabricated support member 60 is fixed to the first intermediate plate 111.

[0110] Specifically, in one example, the support member 60 is integrally formed with the first middle plate 111. For instance, CNC machine tool processing can be used to integrally form the support member 60 and the first middle plate 111. In this case, reusing a portion of the first middle plate 111 as the support member 60 avoids completely removing the middle frame at the opening of the first middle plate 111, thereby saving process materials and reducing material costs. Furthermore, with CNC machine tool processing, along the Z-axis direction, the thickness of the support member 60 can be less than the thickness of the first middle plate 111 (middle plate), thereby increasing the front cavity height and improving sound output performance.

[0111] In another example, the support element is separate from the mid-frame. In this case, the support element needs to be manufactured separately; it is a molded part that can be rolled into a very thin sheet. The thickness of the support element can be less than 0.3 mm, for example, 0.15 mm or 0.2 mm. This separate manufacturing of the support element allows for a thinner component, thereby increasing the overall height of the front cavity and improving audio performance.

[0112] For example, the support component can be an aluminum alloy sheet, an aluminum-magnesium alloy sheet, or a titanium alloy sheet. This reduces the thickness of the support component while increasing its rigidity, preventing deformation when the inner screen is pressed, thus avoiding abnormal noises caused by support component deformation. Alternatively, the support component can also be a steel sheet.

[0113] Additionally, to protect the battery in electronic devices, a thin sheet (such as an aluminum alloy sheet, aluminum-magnesium alloy sheet, or titanium alloy sheet) is usually placed on the side of the battery facing the inner screen; this is the battery cover mentioned above. Since the aluminum alloy sheet, aluminum-magnesium alloy sheet, or titanium alloy sheet can also serve as a support for the inner screen, therefore, referring to... Figure 13 As shown, the battery cover 41 can be extended to the opening of the first middle plate 111, forming an extension 411 of the battery cover 41 at the opening of the first middle plate 111. This extension 411 is used to prevent the inner screen from being pressed and dented. In this way, by extending the battery cover 41 and using the extension 4111 as a support member, the battery cover 41 can protect the battery 40 while solving the pressing noise and front cavity resonance problems of the open front cavity structure. Moreover, the battery cover 41 and the support member can be manufactured in the same process, thereby saving process steps and reducing process costs. Alternatively, the battery cover can also be a steel sheet.

[0114] When the speaker module is working, the airflow carrying sound waves passes through the front cavity and the sound outlet channel, and then exits through the sound outlet hole. However, if a support member 60 is placed in the front cavity, it will obstruct the flow of this airflow, thus reducing audio quality. Therefore, the support member 60 is designed as an elongated strip, extending along the direction from the front cavity towards the sound outlet hole. In this way, most of the airflow can pass through the sound outlet channel and exit through the sound outlet hole. At this time, the airflow carrying sound waves is not significantly obstructed by the support member 60, allowing the electronic device to play audio normally, thereby ensuring audio quality. In this embodiment, the sound outlet hole is located on the side frame positioned in the X-axis direction; therefore, the extension direction of the support member 60 is in the X-axis direction. Alternatively, the sound outlet hole can also be located on the side frame positioned in the Y-axis direction, in which case the extension direction of the support member 60 is in the Y-axis direction. Optionally, there is only one support member 60. This is because more support members 60 would occupy more of the area directly opposite the core and inner screen, reducing the height of most of the front cavity and leading to the audio performance degradation problem associated with a closed front cavity. Therefore, in order to solve the problems of abnormal pressing noise and front cavity resonance in the open front cavity structure while ensuring audio performance, the number of support components 60 is set to 1.

[0115] It should be noted that when there is only one support member 60, the support member 60 can be positioned at any location corresponding to the opening in the first middle plate. Optionally, when there is only one support member 60, it is positioned at the center of the opening in the first middle plate. In this way, corresponding to the position of the opening in the first middle plate, the suspended area of ​​the inner screen on both sides of the support member 60 is the same. When the support member 60 supports the inner screen, it can effectively reduce the deformation of the inner screen at the corresponding suspended position, thereby effectively preventing the inner screen from being pressed and dented.

[0116] As analyzed above, considering that the support structure affects the front cavity height and reduces audio performance, this embodiment of the application makes a protrusion in the core to improve audio performance. Specifically, along the Z-axis, in the area where the first middle plate and the support structure do not overlap, the dome of the core protrudes towards the inner screen. Simultaneously, at the protruding dome position, the magnetic circuit system can be adaptively thickened (the increased thickness is based on not hindering the diaphragm assembly vibration, and is specifically set according to actual needs). Furthermore, at the position corresponding to the support structure, the dome protrudes away from the inner screen to avoid the support structure 60. Thus, by increasing the thickness of the magnetic circuit system, the corresponding electrical transduction coefficient BL is larger. With the current intensity I in the voice coil wire remaining constant, the driving force BIL of the speaker module is larger, i.e., the Ampere force F is larger, thereby improving the low-frequency performance of the speaker module. Alternatively, with the driving force BIL of the speaker module remaining constant, the current intensity I in the voice coil wire can be reduced, thereby reducing power consumption. For example, Figure 14 A perspective view of a kernel provided in an embodiment of this application; Figure 15A cross-sectional view of a kernel provided for an embodiment of this application; Figure 16 A cross-sectional view of another kernel provided for an embodiment of this application. (In conjunction with...) Figure 14 , Figure 15 and Figure 16 The dome includes a main body 52222 and a recess 52223. At least a portion of the main body 52222 protrudes into the inner screen and is located in the area where the opening of the first middle plate does not overlap with the support member. The recess 52223 protrudes into the magnetic circuit system 523 and penetrates the dome along the extension direction of the support member and covers the support member. The thickness of the magnetic circuit system 523 at the aforementioned at least portion of the main body 52222 is greater than the thickness of the magnetic circuit system 523 at the position corresponding to the recess 52223.

[0117] As is well known, a higher and more stable BL curve indicates a more uniform force on the coil, resulting in better speaker module performance. In this application, the thickness of the magnetic circuit system can be increased by increasing the thickness of the magnet, thereby raising the BL curve. Alternatively, the thickness of the magnetic circuit system can be increased by increasing the thickness of the magnetic guide plate, thus making the BL curve more stable.

[0118] In one example, refer to Figure 15 The thickness of magnet 5231 at the position corresponding to the main body 52222 is greater than the thickness of magnet at the position corresponding to the groove 52223. In this way, by increasing the thickness of magnet 5231, the BL curve can be made higher, that is, the value on the BL curve can be larger.

[0119] In another example, refer to Figure 16 The thickness of the magnetic plate 5232 at the position corresponding to the main body 52222 is greater than the thickness of the magnetic plate 5232 at the position corresponding to the groove 52223. In this way, by increasing the thickness of the magnetic plate 4132, the BL curve can be made smoother, that is, the BL curve is close to a straight line, and the value on the BL curve is close to the peak value.

[0120] Alternatively, the thickness of the magnet and the magnetic plate at positions 52222 of the main body can be increased simultaneously. Specifically, the thickness of the magnet at at least a portion of the main body is greater than the thickness of the magnet at the sink position, and the thickness of the magnetic plate at at least a portion of the main body is greater than the thickness of the magnetic plate at the sink position. This allows for a balance between the height and stability of the BL curve.

[0121] It should be noted that the embodiments of this application address, for example, Figure 14 The structure of the core shown is not limited; it can be a single-voice-coil core or a double-voice-coil core. There are also no restrictions on the number and distribution of magnets, or the number and distribution of coils. As long as the core is... Figure 14 The structure shown can be modified by increasing the thickness of the magnetic conductive system at the corresponding position of the main body.

[0122] By setting up the aforementioned support component, it was found that a portion of the core adapted to the support component could be used. By fixing the fixed protrusion on the dome side of the core to the support component, the support component and the core could form a larger rigid body, which could better prevent the inner screen from being pressed and thus solve the pressing noise and front cavity resonance problems of the open front cavity structure.

[0123] In one example, Figure 17 A perspective view of another kernel provided in an embodiment of this application; Figure 18 for Figure 17 The kernel in Figure 1 A cross-sectional view of the electronic device shown at point C. (Combined with...) Figure 17 and Figure 18 The core includes a first sound-emitting unit 5101 and a second sound-emitting unit 5102. A frame 521 supports and fixes the first sound-emitting unit 5101 and the second sound-emitting unit 5102, and separates the first sound-emitting unit 5101 and the second sound-emitting unit 5102. The portion of the frame 521 located between the first sound-emitting unit 5101 and the second sound-emitting unit 5102 is a protrusion 5100. When this core is applied to an electronic device, the front cavity of the first sound-emitting unit 5101 and the front cavity of the second sound-emitting unit 5102 are independent of each other. One sound-emitting unit emits sound through a sound outlet, and the other sound-emitting unit emits sound through a sound outlet gap (the gap formed between the outer screen and the first frame). The protrusion 5100 is attached to the support member 60 along the extending direction of the support member 60. At this time, both the first sound-emitting unit 5101 and the second sound-emitting unit 5102 are located in the area where the opening of the first middle plate does not overlap with the support member 60. Therefore, similar to the above embodiment, in the non-overlapping area, the domes of the first sound-emitting unit 5101 and / or the second sound-emitting unit 5102 can be made protruding, and the thickness of the magnetic circuit system can be increased accordingly to improve audio performance. Furthermore, the number of support members 60 can be two, with the domes of the first sound-emitting unit 5101 and the second sound-emitting unit 5102 both conforming to... Figure 14 The spherical dome of the kernel shown can be improved, as can be referred to Figure 14 In this embodiment, one support member may be located at the sink position of the first sound-generating unit 5101, and the other support member may be located at the sink position of the second sound-generating unit 5102.

[0124] In another example, Figure 19 A perspective view of yet another kernel provided in an embodiment of this application; Figure 20 for Figure 19 A cross-sectional view of the kernel in the image; Figure 21 for Figure 19 The kernel in Figure 1 A cross-sectional view of the electronic device shown at point BB;

[0125] Figure 22 forFigure 19 The kernel in Figure 1 A cross-sectional view of the electronic device shown at point C. (Combined with...) Figures 19-22 The kernel provided in this embodiment is the same as... Figure 7 A key difference in the core shown is that, in this embodiment, the dome 5222 is annular, and the area surrounding the dome 5222 has a fixedly positioned protrusion 5100, meaning that the protrusion 5100 does not vibrate with the vibration of the dome 5222. Therefore, the protrusion 5100 can be fixedly connected to the support member 60, forming a larger rigid body and improving the support effect of the support member 60. Furthermore, since the dome 5222 is annular, when the protrusion 5100 in the center of the core is fixed to the support member 60, the dome 5222 will inevitably have an overlapping portion with the support member 60. Therefore, the dome 5222 can be recessed at this overlapping portion, i.e., protruding towards the magnetic circuit system, while other parts of the dome 5222 are protruding, i.e., protruding towards the inner screen, increasing the thickness of the corresponding magnetic circuit system, thereby improving audio performance.

[0126] It should be noted that the fixed connection between the protrusion 5100 and the support member 60 can be that the protrusion 5100 directly abuts against the support member 60, or the protrusion 5100 can be connected to the support member 60 through a filler (such as foam, plastic film, rubber, etc.).

[0127] In addition, considering that the position of the aforementioned protruding part fixing component will not change (relative to the first middle plate), the aforementioned protruding part of the core can be directly used as a support component. This can solve the problems of pressing noise and front cavity resonance in the open front cavity structure, while saving the hardware cost of the support component.

[0128] For example, it can be like Figure 17 and Figure 19 The kernel shown is directly attached to the inner screen via the protrusion 5100. For example, the protrusion 5100 is fixed to the inner screen with adhesive, thereby saving the support component. This solves the problems of abnormal noise when pressing and resonance in the open front cavity structure, while saving the hardware cost of the support component.

[0129] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electronic device, characterized in that, include: First structural component, middle frame, second structural component, sound-generating device, and support component; The middle frame includes an annular border and a middle plate located within the border; Along the first direction, the first structural member and the second structural member are respectively located on both sides of the middle plate, the frame, the first structural member and the second structural member surround to form a cavity, and the sound-generating device is located in the cavity and on the side of the middle plate away from the first structural member; The middle plate has an opening corresponding to the position of the sound-generating device, and the sound-generating device is connected to the first structural member through the opening to form the front cavity of the sound-generating device. The support is located between the sound-generating device and the first structural member, and covers the portion of the opening.

2. The electronic device according to claim 1, characterized in that, The support member is fixed to the middle plate.

3. The electronic device according to claim 2, characterized in that, The support member is integrally formed with the middle plate.

4. The electronic device according to claim 2, characterized in that, The support member is set independently of the middle plate.

5. The electronic device according to claim 4, characterized in that, The support component is an aluminum alloy sheet, an aluminum-magnesium alloy sheet, or a titanium alloy sheet.

6. The electronic device according to claim 1, characterized in that, The electronic device further includes a battery and a battery cover, wherein the battery cover is located between the battery and the first structural member along the first direction; The battery cover includes an extension that extends to the opening, and the extension is the support member.

7. The electronic device according to claim 1, characterized in that, The support member is elongated, and a sound outlet is provided on the frame. The extension direction of the support member is from the front cavity to the sound outlet.

8. The electronic device according to claim 1, characterized in that, The number of the support members is one.

9. The electronic device according to claim 1, characterized in that, The sound-generating device includes a core, the core including a diaphragm assembly and a magnetic circuit system, the magnetic circuit system being located on the side of the diaphragm assembly facing away from the first structural member, the diaphragm assembly including a diaphragm and a dome, the diaphragm being arranged around the dome; The dome includes a main body and a recess. At least a portion of the main body protrudes toward the first structural member and is located in the area where the opening and the support do not overlap. The recess protrudes toward the magnetic circuit system and extends through the dome along the extension direction of the support and covers the support. The thickness of the magnetic circuit system at at least a portion of the main body is greater than the thickness of the magnetic circuit system at the sink position.

10. The electronic device according to claim 9, characterized in that, The magnetic circuit system includes magnets and magnetic plates stacked along the first direction; The thickness of the magnet at at least a portion of the main body is greater than the thickness of the magnet at the location corresponding to the sink groove; or... The thickness of the magnetic conductive plate at at least a portion of the main body is greater than the thickness of the magnetic conductive plate at the location corresponding to the sink groove; or... The thickness of the magnet at at least a portion of the main body is greater than the thickness of the magnet at the sink position, and the thickness of the magnetic guide plate at at least a portion of the main body is greater than the thickness of the magnetic guide plate at the sink position.

11. The electronic device according to claim 9, characterized in that, The core also includes a protrusion located on the side of the magnetic circuit system facing the first structural member. The protrusion protrudes towards the first structural member relative to the diaphragm assembly and is fixed in position. The protrusion is fixedly connected to the support member.

12. The electronic device according to claim 9, characterized in that, The core also includes a protrusion located on the side of the magnetic circuit system facing the first structural member. The protrusion protrudes towards the first structural member relative to the diaphragm assembly and is fixed in position. The protrusion is fixedly connected to the first structural member, and the protrusion is the support member.

13. The electronic device according to claim 11 or 12, characterized in that, The core includes a first sound-generating unit and a second sound-generating unit. The first sound-generating unit includes a first diaphragm assembly, a first voice coil, and a first magnetic circuit system. The second sound-generating unit includes a second diaphragm assembly, a second voice coil, and a second magnetic circuit system. The core also includes a frame, on which the first sound unit and the second sound unit are fixed. The frame includes an outer perimeter and a middle portion located within and connected to the outer perimeter. The middle portion separates the first sound unit and the second sound unit. The middle part is the protrusion.

14. The electronic device according to claim 11 or 12, characterized in that, The dome is annular and surrounds the outer periphery of the protrusion.

15. The electronic device according to claim 1, characterized in that, The first structural component is the first display screen, and the second structural component is the back cover.

16. The electronic device according to claim 1, characterized in that, The first structural component is a first display screen, and the second structural component is a second display screen.

17. The electronic device according to claim 16, characterized in that, The electronic device is a foldable electronic device, with the first display screen being the inner screen and the second display screen being the outer screen.

Images