Loudspeaker module and electronic device

Abstract

The application discloses a loudspeaker module and an electronic device, and relates to the technical field of electronic devices. The loudspeaker module can increase the magnetic field intensity in the magnetic gap without increasing the volume of the magnetic circuit system and the core body, and can balance the thinness and the audio performance of the device. The loudspeaker module comprises a diaphragm group, a voice coil, a magnetic circuit system and a first auxiliary magnet. The voice coil is connected with the diaphragm group. The magnetic circuit system comprises a center magnet and a side magnet. The side magnet is arranged around the circumference of the center magnet. The voice coil cooperates with the magnetic circuit system to drive the diaphragm group to vibrate. The first auxiliary magnet is located on the side of the diaphragm group away from the magnetic circuit system. The projection of the first auxiliary magnet on the diaphragm group along the central axis of the diaphragm group is a first projection. The projection of the center magnet on the diaphragm group along the central axis of the diaphragm group is a second projection. The first projection and the second projection overlap. The magnetic pole of the first auxiliary magnet close to one end of the center magnet is the same as the magnetic pole of the center magnet close to the first auxiliary magnet.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and in particular to a speaker module and electronic equipment. Background Technology

[0002] With the rapid development of technology, the popularity of loudspeakers is increasing. People's requirements for loudspeaker modules are no longer limited to video and audio playback, but also have higher requirements for the sound quality of the sound played by loudspeaker modules.

[0003] However, in the related technologies, the magnetic circuit of the loudspeaker module has a low magnetic field strength in the magnetic gap formed between the center magnet and the side magnet, resulting in poor acoustic performance. Summary of the Invention

[0004] This application provides a speaker module and electronic device that can increase the magnetic field strength in the magnetic gap without increasing the size of the magnetic circuit system and the core, thus simultaneously achieving both device thinness and audio performance.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, this application provides a loudspeaker module, which includes: a diaphragm assembly, a voice coil, a magnetic circuit system, and a first auxiliary magnet. The voice coil is connected to the diaphragm assembly. The magnetic circuit system includes a central magnet and side magnets, with the side magnets arranged circumferentially around the central magnet. The voice coil cooperates with the magnetic circuit system to drive the diaphragm assembly to vibrate. The first auxiliary magnet is located on the side of the diaphragm assembly away from the magnetic circuit system. The projection of the first auxiliary magnet on the diaphragm assembly along the central axis of the diaphragm assembly is a first projection, and the projection of the central magnet on the diaphragm assembly along the central axis of the diaphragm assembly is a second projection. The first projection and the second projection overlap. The magnetic pole of the first auxiliary magnet near the central magnet is the same as the magnetic pole of the central magnet near the first auxiliary magnet, and the magnetic pole of the first auxiliary magnet away from the central magnet is opposite to the magnetic pole of the central magnet near the first auxiliary magnet.

[0007] The speaker module provided in this application, by placing a first auxiliary magnet on the side of the diaphragm assembly away from the magnetic circuit system, allows the magnetic field lines of the first auxiliary magnet to mutually suppress the magnetic field lines of the central magnet. This effectively suppresses the outward divergence of the magnetic field lines of the central magnet, thereby effectively increasing the magnetic flux density and magnetic field strength within the magnetic gap. Consequently, this improves the sensitivity and acoustic performance of the speaker module. Furthermore, since the first auxiliary magnet is located on the side of the diaphragm assembly away from the magnetic circuit system, increasing the magnetic flux density within the magnetic gap does not increase the overall volume of the magnetic circuit system. This facilitates the miniaturization of the speaker module design, and during production, there is no need to alter the magnetic circuit system or the core structure of the speaker module, effectively reducing production costs.

[0008] In one possible design of the first aspect, the speaker module further includes a housing, a diaphragm assembly disposed within the housing, the diaphragm assembly dividing the housing into a front cavity and a rear cavity, a magnetic circuit system located in the rear cavity, and the housing including a first cover plate opposite to the diaphragm assembly, defining a front cavity between the first cover plate and the diaphragm assembly, with a first auxiliary magnet disposed on the first cover plate. This facilitates the fixing of the first auxiliary magnet.

[0009] In one possible design of the first aspect, the first auxiliary magnet can be disposed on the outer surface of the first cover plate. This facilitates the fixing of the first auxiliary magnet and avoids the first auxiliary magnet occupying the space of the front cavity, thereby saving front cavity space and improving the sensitivity of the speaker module.

[0010] In one possible design of the first aspect, the first auxiliary magnet can be disposed on the inner surface of the first cover plate. This also facilitates the fixing of the first auxiliary magnet, ensuring its stable position and reducing the size of the speaker module in the Z-axis direction. Furthermore, the first auxiliary magnet disposed on the inner surface of the first cover plate can limit the vibration stroke of the diaphragm assembly, preventing the voice coil from slipping out of the magnetic gap.

[0011] In one possible design of the first aspect, a groove is provided on the outer surface of the first cover plate that is recessed toward the diaphragm assembly, and a first auxiliary magnet is disposed within the groove. This reduces the overall volume of the speaker module, thereby saving space.

[0012] In one possible design of the first aspect, a hollow portion is provided on the bottom wall of the groove, and the orthographic projection of the first auxiliary magnet on the bottom wall of the groove covers the hollow portion. In this way, at least a portion of the surface of the first auxiliary magnet is exposed from the hollow portion, which helps to increase the suppression effect of the first auxiliary magnet on the magnetic field lines of the central magnet, thereby further increasing the magnetic field strength within the magnetic gap.

[0013] In one possible design of the first aspect, a mounting hole is provided on the first cover plate, and a first auxiliary magnet is disposed within the mounting hole. The mounting hole is formed as a through hole penetrating both the inner and outer surfaces of the first cover plate. The outer peripheral wall of the first auxiliary magnet is connected to the inner edge of the mounting hole. This facilitates the fixing of the first auxiliary magnet while effectively preventing resonance in the first cover plate, thus improving the sound quality of the speaker module.

[0014] In one possible design of the first aspect, at least a portion of the first auxiliary magnet extends into the front cavity. Specifically, a portion of the first auxiliary magnet extends into the front cavity, or the entire first magnet extends into the front cavity. This reduces the size of the speaker module in the Z-axis direction, that is, it reduces the thickness of the speaker module, thereby reducing the overall volume of the speaker module.

[0015] In one possible design of the first aspect, a seal is provided inside the housing to seal the gap between the first auxiliary magnet and the mounting hole. This effectively seals the gap between the mounting hole and the first auxiliary magnet, and the structure is simple and easy to manufacture.

[0016] In one possible design of the first aspect, the seal includes a first connecting piece, a sealing piece, and a second connecting piece, all of which are annular. The first connecting piece is connected to the inner surface of the first cover plate and surrounds the outer periphery of the mounting hole. The second connecting piece is connected to the end face of one end of the first auxiliary magnet that extends into the mounting hole. The sealing piece is connected between the first connecting piece and the second connecting piece.

[0017] In one possible design of the first aspect, the sealant can be a sealant filled between the mounting hole and the first auxiliary magnet. This sealant seals the gap between the inner edge of the mounting hole and the first auxiliary magnet. This structure is simple, easy to operate, suitable for sealing gaps of different shapes, has a wide range of applications, and offers superior flexibility. Furthermore, the sealant further bonds the first auxiliary magnet to the first cover plate, improving the connection stability between the first auxiliary magnet and the first cover plate.

[0018] In one possible design of the first aspect, the first cover plate and the first auxiliary magnet are an integral structure. In this embodiment, the first cover plate can be a plastic part. This improves the sealing between the first auxiliary magnet and the mounting hole, eliminates the need for additional sealing elements, simplifies the assembly steps of the first auxiliary magnet and the first cover plate, and improves assembly efficiency.

[0019] In one possible design of the first aspect, the first cover plate includes a cover plate body and a reinforcing plate. The cover plate body has an assembly opening, the reinforcing plate is disposed at the assembly opening and seals the assembly opening, and the first auxiliary magnet is disposed on the reinforcing plate. Thus, by setting the reinforcing plate, the overall structural strength of the front shell can be improved without increasing the thickness of the front shell. At the same time, by setting the reinforcing plate, resonance of the first cover plate can be effectively avoided, which is beneficial to improving the sound quality of the speaker module.

[0020] In one possible design of the first aspect, the groove is formed on the reinforcing plate.

[0021] In one possible design of the first aspect, mounting holes are formed on the reinforcing plate.

[0022] In one possible design of the first aspect, the loudspeaker module further includes a second auxiliary magnet located on the side of the diaphragm assembly away from the magnetic circuit system. The projection of the second auxiliary magnet onto the diaphragm assembly along the central axis of the diaphragm assembly is a third projection, and the projection of the side magnet onto the diaphragm assembly along the central axis of the diaphragm assembly is a fourth projection. The third and fourth projections overlap. The magnetic poles of the second auxiliary magnet near the side magnet are the same as the magnetic poles of the side magnet near the second auxiliary magnet, and the magnetic poles of the second auxiliary magnet away from the side magnet are opposite to the magnetic poles of the side magnet near the second auxiliary magnet.

[0023] Therefore, by setting up a second auxiliary magnet, the magnetic field lines of the second auxiliary magnet and the magnetic field lines of the side magnet can mutually inhibit each other, effectively suppressing the outward divergence of the magnetic field lines of the side magnet. This effectively increases the magnetic flux density and magnetic field strength within the magnetic gap, thereby improving the sensitivity and acoustic performance of the speaker module. Simultaneously, since the second auxiliary magnet is located on the side of the diaphragm assembly furthest from the magnetic circuit system, increasing the magnetic flux density within the magnetic gap does not increase the overall volume of the magnetic circuit system. This facilitates the miniaturization of the speaker module design, and during production, there is no need to change the structure of the speaker module's magnetic circuit system and core, effectively reducing production costs.

[0024] In one possible design of the first aspect, the second auxiliary magnet is disposed on the first cover plate.

[0025] In one possible design of the first aspect, the second auxiliary magnet is disposed on the mid-frame or housing of the electronic device.

[0026] Secondly, this application provides a loudspeaker module, including: a diaphragm assembly, a voice coil, a magnetic circuit system, and a second auxiliary magnet. The voice coil is connected to the diaphragm assembly. The magnetic circuit system includes a central magnet and a side magnet. The side magnets are arranged circumferentially around the central magnet. The voice coil cooperates with the magnetic circuit system to drive the diaphragm assembly to vibrate. The second auxiliary magnet is located on the side of the diaphragm assembly away from the magnetic circuit system. The projection of the second auxiliary magnet on the diaphragm assembly along the central axis of the diaphragm assembly is a third projection. The projection of the side magnet on the diaphragm assembly along the central axis of the diaphragm assembly is a fourth projection. The third projection and the fourth projection overlap. The magnetic pole of the second auxiliary magnet near the side magnet is the same as the magnetic pole of the side magnet near the second auxiliary magnet. The magnetic pole of the second auxiliary magnet away from the side magnet is opposite to the magnetic pole of the side magnet near the second auxiliary magnet.

[0027] The speaker module provided in this application, by placing a second auxiliary magnet on the side of the diaphragm assembly away from the magnetic circuit system, allows the magnetic field lines of the second auxiliary magnet to mutually suppress the magnetic field lines of the side magnet, effectively suppressing the outward divergence of the magnetic field lines of the side magnet. This effectively increases the magnetic flux density and magnetic field strength within the magnetic gap, thereby improving the sensitivity and acoustic performance of the speaker module. Simultaneously, because the second auxiliary magnet is located on the side of the diaphragm assembly away from the magnetic circuit system, increasing the magnetic flux density within the magnetic gap does not increase the overall volume of the magnetic circuit system, facilitating the miniaturization of the speaker module design. Furthermore, during production, there is no need to alter the magnetic circuit system or the core structure of the speaker module, effectively reducing production costs.

[0028] In one possible design of the second aspect, the speaker module further includes a housing, a diaphragm assembly disposed within the housing, the diaphragm assembly dividing the housing into a front cavity and a rear cavity, a magnetic circuit system located in the rear cavity, and the housing including a first cover plate opposite to the diaphragm assembly, defining the front cavity between the first cover plate and the diaphragm assembly, with a second auxiliary magnet disposed on the first cover plate. This facilitates the fixing of the second auxiliary magnet.

[0029] Thirdly, this application provides an electronic device, including: a housing with a sound outlet hole; a speaker module disposed inside the housing, the speaker module being a speaker module of any of the above-mentioned technical solutions, the speaker module having a sound outlet channel communicating with the sound outlet hole.

[0030] In one possible design of the third aspect, the electronic device also includes a mid-frame disposed within the housing, and a second auxiliary magnet disposed on the mid-frame.

[0031] In one possible design of the third aspect, the first auxiliary magnet is located on the middle frame.

[0032] Since some embodiments of this application provide electronic devices that include the speaker modules described in the above technical solutions, they can improve the audio performance of electronic devices while satisfying the requirements for thinner design. Attached Figure Description

[0033] Figure 1 Perspective views of electronic devices provided in some embodiments of this application;

[0034] Figure 2 for Figure 1 Exploded view of the electronic device shown;

[0035] Figure 3 for Figure 1 A perspective view of a speaker module inside the electronic device shown.

[0036] Figure 4 for Figure 3 Exploded view of the speaker module shown;

[0037] Figure 5a for Figure 4 A perspective view of the front housing of the speaker module shown.

[0038] Figure 5b for Figure 5a An exploded view of the front shell shown in the image;

[0039] Figure 5c for Figure 5a The diagram shows the structure of the front shell when viewed from below.

[0040] Figure 6 for Figure 4 The diagram shows the structure of the rear shell in the speaker module.

[0041] Figure 7 for Figure 4 The diagram shows the structure of the core in the speaker module.

[0042] Figure 8 for Figure 5c An enlarged view of region A in the structural schematic diagram shown;

[0043] Figure 9 for Figure 4 The diagram shows the assembly of the core and the housing in the speaker module shown.

[0044] Figure 10 A perspective view of the kernel provided for some embodiments of this application;

[0045] Figure 11 for Figure 10 An exploded view of the kernel shown;

[0046] Figure 12 for Figure 11 A three-dimensional view of the basin rack in the core shown;

[0047] Figure 13 for Figure 11 A schematic diagram of a diaphragm assembly in the core shown in the image;

[0048] Figure 14 for Figure 13 A three-dimensional cross-sectional view of the diaphragm assembly shown at line AA;

[0049] Figure 15 for Figure 14 An enlarged view of region B in the three-dimensional sectional view shown;

[0050] Figure 16 for Figure 13 The diaphragm assembly shown is Figure 12The assembly diagram of the basin stand shown;

[0051] Figure 17 for Figure 16 The assembly drawing shown is a perspective sectional view at line BB;

[0052] Figure 18 for Figure 11 The diagram shows the structure of the voice coil assembly in the kernel.

[0053] Figure 19 for Figure 18 Exploded view of the voice coil assembly shown in the image;

[0054] Figure 20 for Figure 18 The voice coil group shown is Figure 14 Assembly diagram of the diaphragm assembly shown;

[0055] Figure 21 for Figure 11 A schematic diagram of the electrical connection structure of the kernel shown;

[0056] Figure 22 for Figure 21 The electrical connection structure shown is related to the voice coil assembly and the conductive assembly of the frame.

[0057] Figure 23 for Figure 11 A schematic diagram of the magnetic circuit system of the core shown in the figure;

[0058] Figure 24 for Figure 23 Exploded view of the magnetic circuit system shown;

[0059] Figure 25 For along Figure 10 A three-dimensional cross-sectional view of the kernel at the CC line shown in the diagram;

[0060] Figure 26 for Figure 24 The magnetic circuit system shown is Figure 12 The assembly diagram of the basin stand shown;

[0061] Figure 27 A perspective view of a speaker module provided in other embodiments of this application;

[0062] Figure 28 for Figure 27 A top view of the speaker module shown;

[0063] Figure 29a for Figure 28 The top view shown is a cross-sectional view along line DD;

[0064] Figure 29b This is a schematic diagram of the projection process of the first auxiliary magnet;

[0065] Figure 29c This is a schematic diagram of the first projection and the second projection in some embodiments of this application;

[0066] Figure 29d This is a schematic diagram of the first projection and the second projection in other embodiments of this application;

[0067] Figure 29e This is a schematic diagram of the first projection and the second projection in some embodiments of this application;

[0068] Figure 29f This is a schematic diagram of the first projection and the second projection in some embodiments of this application;

[0069] Figure 29g This is a cross-sectional view of a speaker module according to other embodiments of this application;

[0070] Figure 30 for Figure 3 A schematic diagram of the magnetic field emission of the speaker module shown;

[0071] Figure 31 for Figure 27 A schematic diagram of the magnetic field emission of the speaker module shown;

[0072] Figure 32 for Figure 3 and Figure 27 A schematic diagram showing the sound loudness test results of the speaker module shown.

[0073] Figure 33 for Figure 3 and Figure 27 A schematic diagram showing the difference in sound loudness between the speaker modules shown;

[0074] Figure 34 A perspective view of a speaker module provided in some embodiments of this application;

[0075] Figure 35 for Figure 34 A cross-sectional view of the speaker module shown;

[0076] Figure 36 Cross-sectional views of a speaker module provided in some embodiments of this application;

[0077] Figure 37 Cross-sectional views of a speaker module provided in some embodiments of this application;

[0078] Figure 38 Cross-sectional views of a speaker module provided in some embodiments of this application;

[0079] Figure 39 Cross-sectional views of a speaker module provided in some embodiments of this application;

[0080] Figure 40a This is a schematic diagram of the third and fourth projections in some embodiments of this application;

[0081] Figure 40b This is a schematic diagram of the third and fourth projections in other embodiments of this application;

[0082] Figure 40c This is a schematic diagram of the third and fourth projections in some embodiments of this application;

[0083] Figure 40d This is a schematic diagram of the third and fourth projections in some embodiments of this application;

[0084] Figure 41 Assembly diagrams of speaker modules and electronic devices according to some embodiments of this application;

[0085] Figure 42 Cross-sectional views of a speaker module provided in some embodiments of this application;

[0086] Figure 43 This is an assembly diagram of a speaker module and electronic device according to some embodiments of this application.

[0087] Figure label:

[0088] 100. Electronic devices;

[0089] 10. Screen; 11. Light-transmitting cover; 12. Display screen; 20. Back cover; 21. Back cover; 22. Bezel; 22a. Speaker hole; 22b. Port; 30. Mid-frame;

[0090] 301. Main circuit board; 302. Secondary circuit board; 303. Connection structure;

[0091] 40. Battery; 50. USB device;

[0092] 60. Speaker module; 60a. Sound output channel;

[0093] 61. Housing; 61a. Fixing part; 601. Front cavity; 602. Rear cavity;

[0094] 611, Front housing; 6111, First cover plate; 6111a, Cover plate body; 6111b, Assembly port; 6111c, Reinforcing plate; 6111d, Groove; 6111e, Hollowed-out portion; 6111f, Mounting hole; 6111g, Seal; 6111g1, First connecting piece; 6111g2, Sealing piece; 6111g3, Second connecting piece; 6112, First side frame; 6112a, First stepped surface; 6112b, Second stepped surface; 6112c, Limiting protrusion;

[0095] 612, Rear shell; 6121, Flat plate section; 6122, Second side frame;

[0096] 62. Kernel; 62a. Fixed surface;

[0097] 621, pot stand; 621a, first short side; 621b, second short side; 621c, first long side; 621c, first notch; 621d, second long side; 621d, second notch;

[0098] 622, Diaphragm assembly; 6221, Dome; 6221a, First top surface; 6221b, First bottom surface; 6221c, Limiting groove; 6222, Diaphragm; 6222a, First fixing part; 6222a1, Second top surface; 6222a2, Second bottom surface; 6222b, Folded ring; 6222c, Second fixing part; 6222c1, Third top surface; 6222c2, Third bottom surface;

[0099] 623. Magnetic circuit system; 6231. Central magnet; 6232. Side magnet; 6232a. First side magnet; 6232b. Second side magnet; 6232c. Third side magnet; 6232d. Fourth side magnet; 6233. Central magnetic yoke; 6234. Edge magnetic yoke; 6235. Lower magnetic yoke; 6238. First auxiliary magnet; 6239. Second auxiliary magnet; 623a. Magnetic gap;

[0100] 624. Voice coil assembly; 6241. Voice coil; 6241a. Top surface of voice coil; 6241b. Bottom surface of voice coil; 6242. Voice coil frame; 6242a. First support portion; 6242a1. First support body; 6242a2. First extension portion; 6242a3. Second extension portion; 6242b. First connecting portion; 6242b1. Second support body; 6242b2. Third extension portion; 6242c. Second connecting portion; 6242c1. Third support body; 6242c2. Fourth extension portion; 6242d. Card interface;

[0101] 625, Electrical connection structure; 625a, First electrical connection unit; 625b, Second electrical connection unit; 625c, Connection terminal; 6251c, First connection structure; 6252c, Second connection structure. Detailed Implementation

[0102] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature.

[0103] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0104] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0105] This application provides an electronic device, which is a type of electronic device with sound playback function. Specifically, the electronic device includes, but is not limited to, mobile phones, tablet personal computers, laptop computers, personal digital assistants (PDAs), personal computers, laptops, in-vehicle devices, wearable devices, portable music players, radios, etc. Among them, wearable devices include, but are not limited to, smart bracelets, smartwatches, smart head-mounted displays, smart glasses, etc.

[0106] Please see Figure 1 and Figure 2 , Figure 1 A perspective view of an electronic device 100 provided in some embodiments of this application. Figure 2 for Figure 1 An exploded view of the electronic device 100 shown. Figure 1 The illustrated electronic device 100 is a mobile phone. In this example, the electronic device 100 includes a screen 10, a back cover 20, a main circuit board 301, a secondary circuit board 302, a connection structure 303, a battery 40, a universal serial bus (USB) device, and a speaker module 60.

[0107] Understandable, Figure 1 and Figure 2 The accompanying drawings below only schematically illustrate some components included in the electronic device 100; the actual shape, size, location, and construction of these components are not subject to change. Figure 1 and Figure 2As well as the accompanying drawings below. In addition, when the electronic device 100 is some other type of device, the electronic device 100 may not include at least one of the screen 10, the sub-circuit board 302, the connection structure 303, the battery 40 and the USB device 50.

[0108] exist Figure 1 In the illustrated embodiment, the electronic device 100 is in the shape of a rectangular plate. For ease of description in the following embodiments, an XYZ coordinate system is established. Specifically, the width direction of the electronic device 100 is defined as the X-axis, the length direction as the Y-axis, and the thickness direction as the Z-axis. It is understood that the coordinate system setting of the electronic device 100 can be flexibly configured according to actual needs and is not specifically limited here. In other embodiments, the shape of the electronic device 100 may also be a square plate, a circular plate, an elliptical plate, etc.

[0109] Screen 10 is used to display images, videos, etc. Screen 10 includes a light-transmitting cover plate 11 and a display panel 12. The light-transmitting cover plate 11 and the display panel 12 are stacked and fixedly connected by adhesive or other means. The light-transmitting cover plate 11 mainly serves to protect the display panel 12 and prevent dust. The material of the light-transmitting cover plate 11 includes, but is not limited to, glass. The display panel 12 can be a flexible display panel or a rigid display panel. For example, the display panel 12 can be an organic light-emitting diode (OLED) display panel, an active-matrix organic light-emitting diode (AMOLED) display panel, a mini organic light-emitting diode (MLED) display panel, a micro organic light-emitting diode (MicroOLED) display panel, a quantum dot light-emitting diode (QLED) display panel, a liquid crystal display (LCD), etc.

[0110] The back cover 20 forms the outer shell of the electronic device 100. The back cover 20 protects the internal electronic components of the electronic device 100. The material of the back cover 20 includes, but is not limited to, metal, ceramic, plastic, and glass. To achieve a thinner and lighter electronic device 100 while maintaining the structural strength of the back cover 20, the material of the back cover 20 can be metal. The back cover 20 includes a back cover 21 and a frame 22. The back cover 21 is located on the side of the display screen 12 away from the light-transmitting cover plate 11 and is stacked with the light-transmitting cover plate 11 and the display screen 12. The frame 22 is located between the back cover 21 and the light-transmitting cover plate 11, and the frame 22 is fixed to the back cover 21. For example, the frame 22 can be fixed to the back cover 21 by adhesive. The frame 22 can also be integrally formed with the back cover 21, i.e., the frame 22 and the back cover 21 are a single integral structure. The light-transmitting cover plate 11 is fixed to the frame 22. In some embodiments, the light-transmitting cover plate 11 can be fixed to the frame 22 by adhesive. The light-transmitting cover 11, the back cover 21, and the frame 22 enclose the internal housing space of the electronic device 100. This internal housing space accommodates the display screen 12, the main circuit board 301, the secondary circuit board 302, the connection structure 303, the battery 40, the USB device 50, and the speaker module 60.

[0111] In some embodiments, please refer to Figure 2 The electronic device 100 also includes a mid-frame 30. The mid-frame 30 is fixed around the inner surface of the frame 22. For example, the mid-frame 30 can be fixed to the frame 22 by welding, or the mid-frame 30 can be integrally formed with the frame 22. The mid-frame 30 serves as the structural "skeleton" of the electronic device 100, and the main circuit board 301, the sub-circuit board 302, the battery 40, and the speaker module 60 can be fixed to the mid-frame 30 by means of threaded connection, snap-fit, welding, etc.

[0112] When the electronic device 100 does not include the middle frame 30, the main circuit board 301, the secondary circuit board 302, the battery 40 and the speaker module 60 can be fixed to the surface of the display screen 12 facing the back cover 21 by means of threaded connection, snap-fit, welding or other means, or they can be fixed to the inner surface of the back cover 21 by means of threaded connection, snap-fit, welding or other means.

[0113] The main circuit board 301 is used to integrate a control chip. The control chip may be, for example, an application processor (AP), double data rate synchronous dynamic random access memory (DDR), or universal flash storage (UFS). In some embodiments, the main circuit board 301 is electrically connected to the display screen 12, and the main circuit board 301 is used to control the display screen 12 to display images or videos.

[0114] The main circuit board 301 can be a rigid circuit board, a flexible circuit board, or a rigid-flex circuit board. The main circuit board 301 can use an FR-4 dielectric substrate, a Rogers dielectric substrate, or a hybrid dielectric substrate of FR-4 and Rogers, etc. Here, FR-4 is a designation for a flame-retardant material grade, and the Rogers dielectric substrate is a high-frequency board.

[0115] Sub-circuit board 302 is used to integrate electronic components such as antenna (e.g., 5G antenna) RF front end and universal serial bus (USB) devices.

[0116] The secondary circuit board 302 can be a rigid circuit board, a flexible circuit board, or a rigid-flex circuit board. The secondary circuit board 302 can use FR-4 dielectric substrate, Rogers dielectric substrate, or a hybrid dielectric substrate of FR-4 and Rogers, etc.

[0117] The secondary circuit board 302 is electrically connected to the main circuit board 301 via a connection structure 303 to enable data and signal transmission between the secondary circuit board 302 and the main circuit board 301. The connection structure 303 can be a flexible printed circuit board (FPC). In other embodiments, the connection structure 303 can also be a wire or enameled wire.

[0118] The battery 40 is located between the main circuit board 301 and the sub-circuit board 302. The battery 40 is used to provide power to electronic devices such as the display screen 12, the main circuit board 301, the sub-circuit board 302, and the speaker module 60 within the electronic device 100. In some embodiments, the surface of the middle frame 30 facing the back cover 21 is provided with a battery 40 mounting groove, in which the battery 40 is mounted.

[0119] The USB device 50 is connected to the secondary circuit board 302. The USB device 50 is an interface device compliant with the USB standard specification. Specifically, the USB device 50 can be a Mini USB device, a Micro USB device, a USB Type-C device, etc. The USB device 50 is used to connect a charger to the electronic device 100 via the port 22b on the frame 22 to charge the electronic device 100. It can also be used to transfer data between the electronic device 100 and peripheral devices, and can be used to connect headphones for audio playback. The USB device 50 can also be used to connect other electronic devices 100, such as augmented reality (AR) devices.

[0120] The speaker module 60 is used to convert audio electrical signals such as music and speech into sound, supporting audio playback functionality. In some embodiments, the speaker module 60 is electrically connected to the sub-circuit board 302. In this case, the audio electrical signal sent by the main circuit board 301 is transmitted to the speaker module 60 via the sub-circuit board 302, and further converted into a sound signal for output by the speaker module 60. Specifically, the speaker module 60 has a sound output channel 60a. The sound signal output by the speaker module 60 is output through this sound output channel 60a. Please refer to [link to relevant documentation]. Figure 1 and Figure 2 The frame 22 has a sound outlet 22a. This sound outlet 22a is connected to the sound outlet channel 60a. The sound signal output from the sound outlet channel 60a is further output to the outside of the electronic device 100 through this sound outlet. In other embodiments, the speaker module 60 can also be directly electrically connected to the main circuit board 301 through a connection structure 303 such as an FPC, wires, or enameled wires.

[0121] Please see Figure 3 , Figure 3 for Figure 1 A perspective view of a speaker module 60 within the electronic device 100 shown. Figure 4 for Figure 3 An exploded view of the speaker module 60 is shown. In this embodiment, the speaker module 60 includes a housing 61 and a core 62.

[0122] It should be noted that, Figure 3 and Figure 4 The speaker module 60 is shown only schematically, and the actual shape, size, location, and construction of these components are not subject to change. Figure 3 and Figure 4 The limitations. Additionally... Figure 3 coordinate system and Figure 1 The coordinate systems in the text are represented by the same coordinate system. That is, Figure 3 The various components within the middle speaker module 60 Figure 3 The orientation relationship in the coordinate system shown is related to the application of the speaker module 60. Figure 1 When the electronic device 100 shown is inside, its various components are... Figure 1 The orientation relationships are the same in the coordinate system shown.

[0123] The housing 61 is provided with a fixing part 61a. The fixing part 61a includes, but is not limited to, through holes, threaded holes, snap fasteners, slots, and limiting steps. Figure 3 and Figure 4 In the illustrated embodiment, the fixing part 61a includes two through holes. These through holes are used to engage with screws to fix the speaker module 60 to the mounting surface. Figure 1 The electronic device 100 shown is located inside.

[0124] The materials of the housing 61 include, but are not limited to, metal and plastic. In some embodiments, the housing 61 is made of plastic, which is low in cost and easy to mold, thus reducing the processing cost of the speaker module 60.

[0125] The housing 61 can be a single structural unit or assembled from multiple parts. In some embodiments, the housing 61 includes a front housing 611 and a rear housing 612. The housing 61 is assembled from the front housing 611 and the rear housing 612, which helps to reduce the molding and assembly difficulty of the housing 61.

[0126] For details, please refer to Figure 5a , Figure 5b and Figure 5c , Figure 5a for Figure 4 The diagram shows the structure of the inner front housing 611 of the speaker module 60. Figure 5b for Figure 5a The exploded view of the front shell 611 shown. Figure 5c for Figure 5a The diagram shows the front housing 611 viewed from below. The front housing 611 includes a first cover plate 6111 and a first side frame 6112. The first side frame 6112 is arranged around the edge of the first cover plate 6111. One end of the first side frame 6112 is connected to the first cover plate 6111, and the other end extends away from the first cover plate 6111. Please refer to [link / reference]. Figure 5c The first side frame 6112 has a first stepped surface 6112a at the end away from the first cover plate 6111, and the first stepped surface 6112a is arranged around the circumference of the first side frame 6112. The front shell 611 connects with the first stepped surface 6112a. Figure 4 The rear shell 612 is fixed in the middle.

[0127] In some embodiments, please refer to the following: Figure 5a , 5b and Figure 5cThe first cover plate 6111 includes a cover plate body 6111a and a reinforcing plate 6111c. The cover plate body 6111a has an assembly opening 6111b, and the reinforcing plate 6111c is disposed at the assembly opening 6111b and seals the assembly opening 6111b. The cover plate body 6111a can be a plastic part, and the reinforcing plate 6111c can be a metal part. For example, the reinforcing plate 6111c can be a stainless steel part. The reinforcing plate 6111c and the cover plate body 6111a can be an integral structure, that is, the reinforcing plate 6111c and the cover plate body 6111a are formed as a whole. For example, the cover plate body 6111a can be molded onto the reinforcing plate 6111c using an injection molding process. Alternatively, the reinforcing plate 6111c can be disposed at the assembly opening 6111b by adhesive, snap-fit, screws, etc. Therefore, by setting the reinforcing plate 6111c, the overall structural strength of the front shell 611 can be improved without increasing the thickness of the front shell 611. At the same time, by setting the reinforcing plate 6111c, resonance of the first cover plate 6111 can be effectively avoided, which is beneficial to improving the sound quality of the speaker module 60.

[0128] In other embodiments, the first cover plate 6111 may not have an assembly opening 6111b. In this example, the first cover plate 6111 may be a plastic part or a metal part.

[0129] Please see Figure 6 , Figure 6 for Figure 4 The diagram shows the structure of the rear shell 612 within the speaker module 60. The rear shell 612 includes a flat plate portion 6121 and a second side frame 6122. The second side frame 6122 is disposed on the inner surface of the flat plate portion 6121 and is fixed to the first stepped surface 6112a of the front shell 611. The rear shell 612 and the front shell 611 form an accommodating space. This allows for the assembly of the front shell 611 and the rear shell 612. This simple structure helps reduce the molding and assembly difficulty of the shell 61. The "inner surface of the flat plate portion 6121" refers to the side surface of the flat plate portion 6121 facing the internal space of the shell 61. The core 62 is disposed within the aforementioned accommodating space and divides the accommodating space into a front cavity 601 and a rear cavity 602.

[0130] Specifically, kernel 62 is located within the front shell 611. Please refer to [link / reference]. Figure 7 , Figure 7 for Figure 4 The diagram shows the structure of the core 62 in the speaker module 60. The core 62 has a fixing surface 62a, which is formed by the outer edge portion of the diaphragm 6222. The core 62 is fixed to the front shell 611 by means of this fixing surface 62a. (See also...) Figure 8 , Figure 8 for Figure 5cThe enlarged view circled in section A shows that the front shell 611 has a second stepped surface 6112b, the shape and size of which are adapted to the shape and size of the fixed surface 62a. Specifically, the second stepped surface 6112b is disposed on the inner surface of the first side frame 6112. Here, "the inner surface of the first side frame 6112" refers to the surface of the first side frame 6112 facing the interior space of the shell 61.

[0131] Please see Figure 9 , Figure 9 for Figure 4 The diagram shows the assembly of the core 62 and housing 61 in the speaker module 60. Specifically, the core 62 is disposed within the front housing 611, and the core 62 and the first cover plate 6111 of the housing 61 are stacked. The core 62, a portion of the first side frame 6112, and the first cover plate 6111 form a front cavity 601, and the rear housing 612 and a portion of the first side frame 6112 form a rear cavity 602. A sound outlet channel 60a is provided on the first side frame 6112, which communicates with the front cavity 601. The airflow generated in the front cavity 601 of the speaker module 60 can be discharged through the sound outlet channel 60a to generate sound. The sound outlet channel 60a and... Figure 1 The sound outlet 22a on the frame 22 of the electronic device 100 shown is connected.

[0132] The fixing surface 62a of the core 62 is fixed to the second step surface 6112b. This allows the core 62 to be placed inside the front shell 611 and achieves the fixation of the core 62 and the front shell 611.

[0133] Based on this, optionally, please refer to Figure 8 and Figure 9 A limiting ridge 6112c is provided on the inner surface of the first side frame 6112, surrounding the second step surface 6112b. There are multiple limiting ridges 6112c, spaced apart circumferentially on the first side frame 6112. It should be noted that "multiple" in this application refers to two or more. In other embodiments, the limiting ridges 6112c may also be formed in a ring shape. When the core 62 is disposed within the front shell 611, the limiting ridges 6112c are arranged circumferentially around the core 62. These limiting ridges 6112c can limit the core 62, preventing misalignment in the XY plane and improving the alignment accuracy between the fixed surface 62a and the second step surface 6112b. In addition, besides being fixed to the second step surface 6112b, the core 62 can also be fixed to the limiting protrusion 6112c by means of its own side, thereby increasing the contact area between the core 62 and the front shell 611 and ensuring the connection stability between the core 62 and the front shell 611.

[0134] Please see Figure 10 and Figure 11 , Figure 10A perspective view of kernel 62 provided in some embodiments of this application. Figure 11 for Figure 10 The diagram shows an exploded view of the core 62. The core 62 includes a frame 621, a vibration system, and a magnetic circuit system 623.

[0135] It should be noted that, Figure 10 and Figure 11 The diagram only schematically illustrates some of the components included in the kernel 62; the actual shape, size, location, and construction of these components are not subject to change. Figure 10 and Figure 11 The limitations. Additionally... Figure 10 coordinate system and Figure 3 The coordinate systems in the text are represented by the same coordinate system. That is, Figure 11 The various components within the kernel 62 Figure 11 The orientation relationship in the coordinate system shown is related to the position of the kernel 62 when it is applied to the system. Figure 3 When the speaker module 60 shown is inside, its various components are in Figure 3 The orientation relationships are the same in the coordinate system shown.

[0136] It is understood that the terms "top" and "bottom" used in the following description of the components in the core 62 refer to the part of the component near the front cavity 601 when the core 62 is applied within the speaker module 60, "inner" refers to the part of the component away from the front cavity 601 when the core 62 is applied within the speaker module 60, "outer" refers to the part of the component near the central axis of the core 62, and "outer" refers to the part of the component away from the central axis of the core 62. These terms do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "rectangular" and "square" used in the following description of the shapes of the components in the core 62 indicate approximate shapes; rounded corners may or may not be provided between adjacent sides. Moreover, the directional relation qualifiers such as "parallel," "perpendicular," "consistent in direction," "same direction," and "opposite direction" used in the following description of the components in the core 62 indicate approximate orientations with a certain margin of error.

[0137] The frame 621 serves as a "support skeleton" for the core 62, supporting the vibration system and securing the magnetic circuit system 623. The frame 621 may be made of materials including, but not limited to, metal and plastic.

[0138] Please see Figure 12 , Figure 12 for Figure 11The diagram shows a perspective view of the basin frame 621 within the core 62. The basin frame 621 is a rectangular frame. Specifically, the basin frame 621 includes opposing first short sides 621a and second short sides 621b, and opposing first long sides 621c and second long sides 621d. The extending directions of the first long sides 621c and second long sides 621d are parallel to the X-axis, while the extending directions of the first short sides 621a and second short sides 621b are parallel to the Y-axis. The lengths of the first long sides 621c and second long sides 621d are greater than the lengths of the first short sides 621a and second short sides 621b. The basin frame 621 is formed by sequentially connecting and enclosing the first short sides 621a, the first long sides 621c, the second short sides 621b, and the second long sides 621d.

[0139] The basin frame 621 can be a single structural component or assembled from multiple parts through methods such as bonding, snap-fitting, or threaded connection. It is understood that the basin frame 621 is used to support the vibration system and fix the magnetic circuit system 623. While meeting this requirement, the basin frame 621 can also have other design shapes, not limited to this embodiment.

[0140] Please return to the reference. Figure 11 The vibration system includes a diaphragm assembly 622, a voice coil assembly 624, and an electrical connection structure 625. The diaphragm assembly 622 is the main component that drives the air movement within the front cavity 601 of the speaker module 60. Figure 11 The kernel 62 shown is applied to Figures 3-4 When the speaker module 60 is installed, the core 62 separates the rear cavity 602 and the front cavity 601 of the speaker module 60 by means of the diaphragm assembly 622. That is, the diaphragm assembly 622 divides the housing 61 into the front cavity 601 and the rear cavity 602. The diaphragm assembly 622 is opposite to the first cover plate 6111. That is, the projection of the first cover plate 6111 along the central axis of the diaphragm assembly 622 onto the diaphragm assembly 622 overlaps with the diaphragm assembly 622. The front cavity 601 is defined between the diaphragm assembly 622 and the first cover plate 6111 of the housing 61.

[0141] Please see Figure 13 , Figure 14 and Figure 15 , Figure 13 for Figure 11 A schematic diagram of one structure of the diaphragm assembly 622 in the core 62 shown. Figure 14 for Figure 13 The diaphragm assembly 622 shown is a three-dimensional sectional view at line AA. Figure 15 for Figure 14 The enlarged view of region B in the sectional view shown is shown below. It should be noted that "at line AA" refers to the plane containing line AA and the arrows at both ends of line AA. The same understanding should be applied to similar figures in the following text, and will not be repeated here.

[0142] Please see Figure 13 The diaphragm assembly 622 includes a dome 6221 and a diaphragm 6222. The dome 6221 is rectangular in shape. The length direction of the dome 6221 is parallel to the X-axis, the width direction is parallel to the Y-axis, and the thickness direction is parallel to the Z-axis. Please refer to [link / reference]. Figure 14 and Figure 15 The dome 6221 includes a first top surface 6221a and a first bottom surface 6222b disposed opposite to each other. A limiting groove 6221c is provided in the edge region of the first bottom surface 6222b. In other embodiments, the limiting groove 6221c of the dome 6221 may also be provided in the edge region of the first top surface 6221a of the dome 6221.

[0143] Please continue reading. Figure 13 The diaphragm 6222 is rectangular and annular. The long side of the diaphragm 6222 extends parallel to the X-axis, and the short side extends parallel to the Y-axis. The diaphragm 6222 includes a first fixing part 6222a, a folded ring 6222b, and a second fixing part 6222c connected in sequence. The first fixing part 6222a is located inside the folded ring 6222b, and the second fixing part 6222c is located outside the folded ring 6222b.

[0144] Please see Figure 14 and Figure 15 The first fixing part 6222a is partially received in the limiting groove 6221c of the dome 6221 and fixed to the dome 6221. Based on this, the first fixing part 6222a of the diaphragm 6222 has a second top surface 6222a1 and a second bottom surface 6222a2. The second top surface 6222a1 of the first fixing part 6222a contacts the bottom wall of the limiting groove 6221c, and the second bottom surface 6222a2 of the first fixing part 6222a is flush with the first bottom surface 6222b of the dome 6221. The surface formed by the splicing of the second bottom surface 6222a2 of the first fixing part 6222a and the first bottom surface 6222b of the dome 6221 is used to fix the voice coil assembly 624, thereby facilitating the fixation of the voice coil assembly 624.

[0145] Please see Figure 14 The second fixing part 6222c has a third top surface 6222c1 and a third bottom surface 6222c2 facing each other. The third top surface 6222c1 of the second fixing part 6222c is formed Figure 7 The core 62 is shown as having a fixed surface 62a. When the core 62 is installed inside the speaker module 60, the diaphragm assembly 622 is fixed to the inner surface of the front shell 611 of the speaker module 60 by means of the third top surface 6222c1 of the second fixing part 6222c. The third bottom surface 6222c2 of the second fixing part 6222c is used for... Figure 12 The top surface of the basin stand 621 shown is fixed.

[0146] The cross-sectional shape of the surround 6222b of the diaphragm 6222 is arc-shaped or approximately arc-shaped, and the extension trajectory of the surround 6222b is a rounded rectangle. The long side of the extension trajectory of the surround 6222b extends parallel to the X-axis, and the short side extends parallel to the Y-axis. The surround 6222b of the diaphragm 6222 is convex, that is, the surround 6222b protrudes away from the voice coil assembly 624. When subjected to external force, the surround 6222b of the diaphragm 6222 can deform, allowing the dome 6221 to vibrate up and down relative to the second fixed part 6222c in the Z-axis direction.

[0147] In this embodiment, since the fold ring 6222b of the diaphragm 6222 is convex, the space below the diaphragm 6222 is freed up, allowing the magnetic circuit system 623 located below the diaphragm 6222 to have a larger height dimension, thereby increasing the magnetic induction intensity of the core 62 and improving the sensitivity of the core 62.

[0148] It is understood that in other embodiments, the surround 6222b of the diaphragm 6222 may also be recessed, that is, the surround 6222b is recessed towards the side facing the voice coil assembly 624. In this way, the core 62 can save its upper space, thereby saving space in the front cavity 601.

[0149] Please see Figure 16 and Figure 17 , Figure 16 for Figure 13 The diaphragm assembly 622 shown is... Figure 12 The assembly drawing of the basin stand 621 shown is shown. Figure 17 for Figure 16 The assembly diagram shown is a perspective sectional view at line BB. In the diaphragm assembly 622, the third bottom surface 6222c2 of the second fixing part 6222c of the diaphragm 6222 faces the frame 621 and is fixed to the top surface of the frame 621.

[0150] Please see Figure 18 , Figure 18 for Figure 11 The diagram shows the structure of the voice coil assembly 624 in the core 62. The voice coil assembly 624 works in conjunction with the magnetic circuit system 623 to synchronously drive the diaphragm assembly 622 to vibrate, thereby driving the air movement within the front cavity 601 of the speaker module 60 to generate sound.

[0151] Please refer to the following: Figure 18 and Figure 19 , Figure 19 for Figure 18The diagram shows an exploded view of the voice coil assembly 624. In this embodiment, the voice coil assembly 624 includes a voice coil 6241 and a voice coil frame 6242. The voice coil 6241 has a top surface 6241a and a bottom surface 6241b. The top surface 6241a is used to connect with the diaphragm assembly 622, and the end of the voice coil 6241 with the bottom surface 6241b is used to extend into the magnetic circuit system 623 to cooperate with the magnetic circuit system 623. The top surface 6241a of the voice coil 6241 is connected to the diaphragm assembly 622 via the voice coil frame 6242. One end of the voice coil frame 6242 in the Z-axis direction is connected to the diaphragm assembly 622, and the other end of the voice coil frame 6242 in the Z-axis direction is connected to the voice coil 6241. The voice coil skeleton 6242 is used to adjust the height of the voice coil 6241 in the Z-axis direction, so as to adjust the voice coil 6241 to extend into the magnetic circuit system 623 while ensuring the vibration space of the diaphragm assembly 622. Furthermore, the voice coil skeleton 6242 can be made of a material with low density and high structural strength, such as aluminum alloy or magnesium-aluminum alloy, to reduce the load on the magnetic circuit system 623. At the same time, the voice coil skeleton 6242 can also dissipate heat from the voice coil 6241, thereby reducing the risk of damage to the diaphragm assembly 622 due to overheating of the voice coil 6241.

[0152] Please see Figure 18 and Figure 19 In some embodiments, the voice coil frame 6242 includes a first support portion 6242a, a first connecting portion 6242b, and a second connecting portion 6242c. The first support portion 6242a includes a first support body 6242a1, which has a first end and a second end opposite to each other in the Z-axis direction. The first end of the first support body 6242a1 has an outwardly extending first extension portion 6242a2, and the second end of the first support body 6242a1 has an inwardly extending second extension portion 6242a3. The cross-sectional shape of the first support portion 6242a is approximately Z-shaped. The top surface of the first extension portion 6242a2 is connected to the first bottom surface 6222b of the dome 6221, and the bottom surface of the second extension portion 6242a3 is fixed to the top surface 6241a of the voice coil 6241. Specifically, the first extension 6242a2 can be bonded to the dome 6221, and the second extension 6242a3 can be bonded to the voice coil 6241. Thus, by providing the first extension 6242a2 and the second extension 6242a3, the contact area between the voice coil frame 6242 and the diaphragm assembly 622, as well as the contact area between the voice coil 6241 and the voice coil frame 6242, can be increased. This improves the reliability of the connection between the voice coil frame 6242 and the diaphragm assembly 622, and between the voice coil frame 6242 and the voice coil 6241, and also avoids split vibration, which is beneficial for improving the sound quality of the speaker module 60.

[0153] In some other embodiments, the cross-sectional shape of the first support portion 6242a may also be a vertical "one" shape, L shape, inverted L shape, T shape, inverted T shape, "匸" shape, etc. The present application does not strictly limit the cross-sectional shape of the first support portion 6242a.

[0154] Please refer to Figure 18 , a through hole 6242a4 penetrating through the first support body 6242a1 in its thickness direction is provided on the first support body 6242a1, and the through hole 6242a4 extends to the second end of the first support body 6242a1. The positive and negative leads of the voice coil 6241 (not shown in the figure) can pass through the through hole 6242a4 to the outside of the first support body 6242a1, and then the positive and negative leads of the voice coil 6241 can be conveniently electrically connected to the electrical connection structure 625. Please continue to refer to Figure 19 , the first connecting portion 6242b and the second connecting portion 6242c are respectively arranged at both ends of the first support portion 6242a in the length direction, that is, the first connecting portion 6242b and the second connecting portion 6242c are respectively arranged at both ends of the first support portion 6242a in the X-axis direction.

[0155] The first connecting portion 6242b includes a second support body 6242b1 and a third extension portion 6242b2, and the second support body 6242b1 is formed into a flat plate shape. One end of the second support body 6242b1 in the X-axis direction is connected to the first extension portion 6242a2, and the top surface of the second support body 6242b1 is coplanar with the top surface of the first extension portion 6242a2.

[0156] Please refer to Figure 19 , the second connecting portion 6242c and the first connecting portion 6242b are symmetrically arranged on both sides of the first support portion 6242a. The second connecting portion 6242c includes a third support body 6242c1 and a fourth extension portion 6242c2, the third support body 6242c1 is connected to the first extension portion 6242a2, and the top surface of the third support body 6242c1 is coplanar with the top surface of the first extension portion 6242a2. In this way, the top surfaces of the second support body 6242b1 and the third support body 6242c1 can both be connected to the diaphragm group 622, further increasing the contact area between the voice coil skeleton 6242 and the diaphragm group 622, improving the connection reliability between the voice coil skeleton 6242 and the diaphragm group 622, and at the same time improving the smoothness of the movement of the diaphragm group 622, avoiding splitting vibration, and being beneficial to improving the sound quality of the core 62.

[0157] Please refer to Figure 19One end of the third extension 6242b2 is connected to the end of the second support body 6242b1 away from the first support body 6242a1, and the other end of the third extension 6242b2 extends in a direction away from the diaphragm assembly 622. Similarly, one end of the fourth extension 6242c2 is connected to the end of the third support body 6242c1 away from the first support body 6242a1, and the other end of the fourth extension 6242c2 extends in a direction away from the diaphragm assembly 622.

[0158] The voice coil frame 6242 can be a one-piece structure or it can be assembled from multiple parts; this application does not specifically limit it in this regard.

[0159] In some other embodiments, the core 62 may omit the voice coil skeleton 6242 and instead directly fix the voice coil 6241 to the diaphragm assembly 622. This reduces the number of components in the core 62, simplifying its structure.

[0160] Please see Figure 20 , Figure 20 for Figures 18-19 The voice coil group 624 shown is Figure 13 The diaphragm assembly shown is 622. Figure 12 The diagram shows the assembly of the frame 621. The voice coil assembly 624 is located inside the frame 621. The first connecting part 6242b is located near the first short side 621a of the frame 621, and the second connecting part 6242c is located near the second short side 621b of the frame 621.

[0161] It is understood that in other embodiments, the voice coil 6241 may also be formed as a planar voice coil; in this embodiment, the voice coil 6241 may be bonded to the dome 6221. The planar voice coil can be manufactured by winding or printing circuitry. The smaller thickness of the planar voice coil is beneficial for reducing the thickness of the core 62.

[0162] Please see Figure 21 , Figure 21 for Figure 11 The diagram shows the structure of the electrical connection structure 625 in the core 62. The electrical connection structure 625 includes a first electrical connection unit 625a and a second electrical connection unit 625b. Specifically, the structure of the second electrical connection unit 625b can be the same as and symmetrically arranged with respect to the structure of the first electrical connection unit 625a. The first electrical connection unit 625a is connected between the first short side portion 621a of the frame 621 and the third extension portion 6242b2 of the voice coil frame 6242, and the second electrical connection unit 625b is connected between the second short side portion 621b of the frame 621 and the fourth extension portion 6242c2 of the voice coil frame 6242.

[0163] For details, please refer to Figure 22The end of the first short side 621a away from the dome 6221 and the end of the third extension 6242b2 away from the second support body 6242b1 are bonded to the first electrical connection unit 625a. The end of the second short side 621b away from the dome 6221 and the end of the fourth extension 6242c2 away from the third support body 6242c1 are bonded to the second electrical connection unit 625b.

[0164] In order to prevent the first electrical connection unit 625a from obstructing the movement of the voice coil assembly 624, in some embodiments, the first electrical connection unit 625a and the second electrical connection unit 625b are flexible electrical connection structures, including but not limited to FPC and structures formed by connecting multiple wires through a flexible structure.

[0165] Based on the above embodiments, a connection terminal 625c may be provided on one of the first electrical connection unit 625a and the second electrical connection unit 625b. For an example, please refer to... Figure 21 and Figure 22 The first electrical connection unit 625a is provided with the aforementioned connection terminal 625c. The positive and negative leads of the voice coil 6241 (not shown in the figure) can be electrically connected to the first electrical connection unit 625a through the connection terminal 625c. The connection terminal 625c includes a first connection structure 6251c and a second connection structure 6252c. One end of the first connection structure 6251c is connected to the first electrical connection unit 625a, and the other end of the second connection structure 6252c is connected to the first electrical connection unit 625a. The connection terminal 625c is generally formed in an inverted L shape.

[0166] Based on this, please refer to Figure 22 The third extension 6242b2 of the voice coil frame 6242 is provided with a locking interface 6242d, and the second connecting structure 6252c can extend into the inside of the voice coil frame 6242 through the locking interface 6242d. This facilitates the connection of the positive and negative leads of the voice coil 6241 to the connecting terminal 625c. Simultaneously, the cooperation between the connecting terminal 625c and the locking interface 6242d improves the connection reliability between the first electrical connection unit 625a and the voice coil frame 6242, making the position of the first electrical connection unit 625a more stable.

[0167] Please return to the reference. Figure 11 The magnetic circuit system 623 is fixed to the frame 621 and is located in the rear cavity 602. The magnetic circuit system 623 is used to cooperate with the voice coil assembly 624 to drive the diaphragm assembly 622 to vibrate synchronously. (See also...) Figure 23 and Figure 24 , Figure 23 for Figure 11 The diagram shows the structure of the magnetic circuit system 623 in the core 62. Figure 24 for Figure 23The exploded view of the magnetic circuit system 623 is shown. The magnetic circuit system 623 includes a central magnet 6231 and side magnets 6232.

[0168] Please see Figure 24 The lateral magnet 6232 is arranged circumferentially around the central magnet 6231, and a magnetic gap 623a is defined between the central magnet 6231 and the lateral magnet 6232. (See also...) Figure 25 , Figure 25 For along Figure 10 A cross-sectional view along the CC line. The portion of voice coil 6241 away from diaphragm assembly 622 extends into magnetic gap 623a. It is understood that in other embodiments, when voice coil 6241 is a planar voice coil, voice coil 6241 may not extend into the aforementioned magnetic gap 623a.

[0169] The central magnet 6231 can be a magnet or a steel magnet. Similarly, the side magnet 6232 can also be a magnet or a steel magnet. The magnetization direction of the central magnet 6231 (from the south pole to the north pole, i.e., from the S pole to the N pole) is opposite to the magnetization direction of the side magnet 6232. For an example, please refer to [link to example]. Figure 25 The central magnet 6231 has an N pole at the end closest to the diaphragm assembly 622 and an S pole at the end furthest from the diaphragm assembly 622. Similarly, the side magnet 6232 has an S pole at the end closest to the diaphragm assembly 622 and an N pole at the end furthest from the diaphragm assembly 622. This creates a magnetic circuit between the central magnet 6231 and the side magnet 6232. When the voice coil 6241 is energized, it drives the diaphragm assembly 622 to vibrate under the influence of the magnetic field within the magnetic gap 623a.

[0170] Please see Figure 24 The central magnet 6231 forms a rectangular flat plate structure. The length direction of the central magnet 6231 is parallel to the X-axis, the width direction of the central magnet 6231 is parallel to the Y-axis, and the thickness direction of the central magnet 6231 is parallel to the Z-axis.

[0171] The number of side magnets 6232 can be one or more. When there are multiple side magnets 6232, they are evenly arranged around the central magnet 6231 in a circumferential manner. For an example, please refer to [link to example]. Figure 24The number of side magnets 6232 is four. Specifically, the side magnets 6232 include a first side magnet 6232a, a second side magnet 6232b, a third side magnet 6232c, and a fourth side magnet 6232d. The first side magnet 6232a and the second side magnet 6232b are located on opposite sides of the central magnet 6231 along its length, while the third side magnet 6232c and the fourth side magnet 6232d are located on opposite sides of the central magnet 6231 along its width. The first side magnet 6232a and the second side magnet 6232b can be formed in an "H" shape, while the third side magnet 6232c and the fourth side magnet 6232d can be formed in a long strip shape.

[0172] In other embodiments, the side magnet 6232 may also be formed as a ring magnet arranged around the central magnet 6231, without specific limitation.

[0173] Based on the above embodiments, in order to increase the magnetic flux intensity, please refer to some embodiments as well. Figures 23-25 The magnetic circuit system 623 also includes a central magnetic yoke 6233 and an edge magnetic yoke 6234. The central magnetic yoke 6233 and the edge magnetic yoke 6234 are used to constrain the outward diffusion of leakage magnetic flux from the induction coil. Their material can be a yoke iron made of stacked silicon steel sheets. The central magnetic yoke 6233 is formed into a rectangular flat plate structure, and the edge magnetic yoke 6234 is formed into a ring-shaped flat plate structure. The central magnetic yoke 6233 is mounted on the surface of the central magnet 6231 near the diaphragm assembly 622 by means of adhesive bonding, snap-fitting, or threaded connection, and the edge magnetic yoke 6234 is mounted on the surface of the edge magnet 6232 near the diaphragm assembly 622 by means of adhesive bonding, snap-fitting, or threaded connection. In this way, by constraining the magnetic lines of force through the central magnetic yoke 6233 and the edge magnetic yoke 6234, the magnetic flux intensity within the aforementioned magnetic gap 623a can be increased, thereby improving the driving strength of the diaphragm assembly 622.

[0174] It is understood that in some other embodiments, the magnetic circuit system 623 may also not include the central magnetic yoke 6233, the edge magnetic yoke 6234, and the edge magnetic yoke 6234.

[0175] Furthermore, the core 62 also includes a lower magnetic yoke 6235, which is located on the surface of the central magnet 6231 and the side magnet 6232 away from the diaphragm assembly 622. The central magnet 6231 and the side magnet 6232 can be fixed to the lower magnetic yoke 6235 by means of adhesive, snap-fit, threaded connection, etc.

[0176] The lower magnetic yoke 6235 can be made of stacked silicon steel sheets. The lower magnetic yoke 6235 can constrain the magnetic lines of force of the central magnet 6231 and the side magnets 6232, thereby further increasing the magnetic flux intensity within the magnetic gap 623a between the central magnet 6231 and the side magnets 6232, and improving the driving strength of the diaphragm assembly 622. Simultaneously, the lower magnetic yoke 6235 can be used to fix the relative positions of the central magnet 6231 and the side magnets 6232 in the magnetic circuit system 623. Thus, by setting the lower magnetic yoke 6235, the various components of the magnetic circuit system 623 can be integrated into a single unit, allowing for overall assembly of the magnetic circuit system 623, which helps reduce assembly difficulty and improve assembly efficiency.

[0177] Please see Figure 26 , Figure 26 for Figure 23 The magnetic circuit system 623 shown in the figure and Figure 12 The diagram shows the assembly of the basin frame 621. The side surface of the edge magnetic yoke 6234 away from the edge magnet 6232 is connected to the bottom surfaces of the first long side portion 621c and the second long side portion 621d of the basin frame 621. Specifically, the bottom surface of the first long side portion 621c has a first notch 6211c, and the bottom surface of the second long side portion 621d has a second notch 6211d. The edge magnetic yoke 6234 is connected at the first notch 6211c and the second notch 6211d.

[0178] In the above embodiments, the magnetic circuit system 623 has a simple structure and is easy to manufacture. However, due to the divergence of the magnetic lines of force between the central magnet 6231 and the side magnet 6232, the magnetic flux density in the magnetic gap 623a is low, which reduces the sensitivity of the speaker module 60 and makes the acoustic performance of the speaker module 60 poor.

[0179] To increase the magnetic flux density within the magnetic gap 623a, please refer to [link / reference]. Figure 27 , Figure 28 and Figure 29a , Figure 27 This is a perspective view of a speaker module 60 provided in other embodiments of this application. Figure 28 for Figure 27 Top view of the middle speaker module 60 Figure 29a For along Figure 28 A cross-sectional view of the DD line.

[0180] Please see Figure 27 , Figure 28 and Figure 29a In this embodiment, the speaker module 60 includes, in addition to, Figure 3In addition to the housing 61, diaphragm assembly 622, voice coil 6241, and magnetic circuit system 623 in the speaker module 60 shown, the speaker module 60 in this embodiment also includes a first auxiliary magnet 6238, which is located on the side of the diaphragm assembly 622 away from the magnetic circuit system 623. The first auxiliary magnet 6238 is spaced apart from the diaphragm assembly 622 to avoid interfering with the movement of the diaphragm assembly 622. The first auxiliary magnet 6238 can be located inside or outside the housing 61.

[0181] The projection of the first auxiliary magnet 6238 along the central axis O of the diaphragm assembly 622 onto the diaphragm assembly 622 is the first projection S1, and the projection of the central magnet 6231 along the central axis O of the diaphragm assembly 622 onto the diaphragm assembly 622 is the second projection S2. Here, the central axis O of the diaphragm assembly 622 refers to a straight line passing through the center of the diaphragm assembly 622 and perpendicular to the plane containing the dome 6221 of the diaphragm assembly 622. The first projection S1 is the orthographic projection of the first auxiliary magnet 6238 onto the plane containing the dome 6221. The second projection S2 is the orthographic projection of the central magnet 6238 onto the plane containing the dome 6221. For an example, please refer to [link to example]. Figure 29b , Figure 29b This is a schematic diagram of the projection of the first auxiliary magnet 6238 onto the diaphragm assembly 622 along the central axis O. The projection lines n of each point on the first auxiliary magnet 6238 are all parallel to the central axis O of the diaphragm assembly 622. The projection process of the second projection S2 and the third projection S3 and fourth projection S4 (described below) is similar to that of the first projection S1, and will not be described again here.

[0182] Specifically, the first projection S1 and the second projection S2 overlap. The first projection S1 and the second projection S2 may partially overlap or completely overlap. When the first projection S1 and the second projection S2 partially overlap, there are three possible scenarios:

[0183] The first scenario is as follows: Please refer to [link / reference needed]. Figure 29c The first projection S1 and the second projection S2 intersect. At this time, a part of the first projection S1 coincides with a part of the second projection S2, while another part of the first projection S1 does not coincide with another part of the second projection S2.

[0184] The second scenario is as follows: Please refer to [link / reference needed]. Figure 29d The outer contour of the first projection S1 is located within the outer contour of the second projection S2, that is, the first projection S1 is contained within the second projection S2. At this time, the area of ​​the second projection S2 is greater than the area of ​​the first projection S1.

[0185] The third scenario is as follows: Please refer to [link / reference needed]. Figure 29eThe outer contour of the second projection S2 is located within the outer contour of the first projection S1, that is, the second projection S2 can be contained within the first projection S1. At this time, the area of ​​the second projection S2 is smaller than the area of ​​the first projection S1.

[0186] Please see Figure 29f When the first projection S1 and the second projection S2 completely overlap, their outer contours completely coincide. At this time, the area of ​​the first projection S1 is equal to the area of ​​the second projection S2. It should be noted that the phrase "the first projection S1 and the second projection S2 completely overlap" in this application should be interpreted broadly. That is, it does not need to be completely overlapped in a strict sense. Due to process errors, if the area of ​​the first projection S1 is slightly larger or slightly smaller than the area of ​​the second projection S2, it can also be considered that the first projection S1 and the second projection S2 completely overlap.

[0187] The first auxiliary magnet 6238 can be a magnet or a magnetic steel. The magnetic pole of the first auxiliary magnet 6238 near the central magnet 6231 is the same as the magnetic pole of the central magnet 6231 near the first auxiliary magnet 6238, and the magnetic pole of the first auxiliary magnet 6238 away from the central magnet 6231 is opposite to the magnetic pole of the central magnet 6231 near the first auxiliary magnet 6238.

[0188] For example, please refer to Figure 29a The end of the central magnet 6231 closest to the first auxiliary magnet 6238 is the N pole, and the end furthest from the first auxiliary magnet 6238 is the S pole. The end of the first auxiliary magnet 6238 closest to the central magnet 6231 is the N pole, and the end furthest from the central magnet 6231 is the S pole.

[0189] Please see Figure 30 and Figure 31 , Figure 30 for Figure 3 The diagram shows a magnetic field emission pattern of the speaker module 60. Figure 31 for Figure 27 A schematic diagram of the magnetic field emission of the speaker module 60 shown. From Figure 30 As can be seen, the magnetic field lines in magnetic circuit system 623 exhibit divergence. From Figure 31As can be seen, after adding the first auxiliary magnet 6238, the magnetic field lines of the first auxiliary magnet 6238 and the magnetic field lines of the central magnet 6231 will mutually inhibit each other, effectively suppressing the outward divergence of the magnetic field lines of the central magnet 6231. This effectively increases the magnetic flux density and magnetic field strength within the magnetic gap 623a, thereby improving the sensitivity and acoustic performance of the speaker module 60. Simultaneously, since the first auxiliary magnet 6238 is located on the side of the diaphragm assembly 622 away from the magnetic circuit system 623, increasing the magnetic flux density within the magnetic gap 623a does not increase the overall volume of the magnetic circuit system 623. This facilitates the miniaturization design of the speaker module 60, and during production, there is no need to change the original structure of the magnetic circuit system 623 and the core 62 of the speaker module 60, effectively reducing production costs.

[0190] By comparing the magnetic field strength in the magnetic gap 623a before and after setting the first auxiliary magnet 6238, the results show that the magnetic field strength in the magnetic gap 623a is increased by 10% after adding the first auxiliary magnet 6238 compared with the case where the first auxiliary magnet 6238 is not set.

[0191] Please see Figure 32 and Figure 33 , Figure 32 for Figure 3 The speaker module 60 shown is Figure 28 The diagram shows the sound loudness test results for speaker module 60. Figure 33 for Figure 3 and Figure 28 The diagram shows the difference in sound loudness of the speaker module 60 shown. Figure 32 and Figure 33 In the graph, the horizontal axis represents frequency in Hertz (Hz), and the vertical axis represents sound intensity in decibels (dB). Figure 33 The middle curve a is Figure 3 The sound loudness of the speaker module 60 shown is represented by curve b. Figure 27 The loudness of the speaker module 60 shown. Figure 33 Curve c in the diagram is the curve obtained by subtracting curve a from curve b.

[0192] from Figure 33 As can be seen, after setting the first auxiliary magnet 6238, the sound loudness of the low-frequency band (less than 800 Hz) of the speaker module 60 is increased by about 1 decibel compared with the absence of the first auxiliary magnet 6238, effectively improving the sound loudness of the low-frequency band.

[0193] Please return to the reference. Figure 29aIn some embodiments, a first auxiliary magnet 6238 is disposed on a first cover plate 6111. The first auxiliary magnet 6238 may be disposed on the inner surface of the first cover plate 6111 or on the outer surface of the first cover plate 6111.

[0194] For example, please refer to Figure 29a The first auxiliary magnet 6238 can be disposed on the outer surface of the reinforcing plate 6111c of the first cover plate 6111. The first auxiliary magnet 6238 can be disposed on the outer surface of the reinforcing plate 6111c by means of adhesive, snap-fit, or other methods. This facilitates the fixing of the first auxiliary magnet 6238 and avoids the first auxiliary magnet 6238 occupying the space of the front cavity 601, thereby saving space in the front cavity 601 and improving the sensitivity of the speaker module 60.

[0195] In other embodiments, the first auxiliary magnet 6238 may also be disposed on the mid-frame 30 or the outer casing of the electronic device 100. In this way, the space within the electronic device 100 can be utilized to arrange the first auxiliary magnet 6238, which is beneficial for achieving a thinner and lighter design of the electronic device 100.

[0196] It is understood that in some other embodiments, please refer to Figure 29g The first auxiliary magnet 6238 can also be disposed on the inner surface of the reinforcing plate 6111c. This also facilitates the fixation of the first auxiliary magnet 6238, ensuring its stable position and reducing the size of the speaker module 60 in the Z-axis direction. Furthermore, the first auxiliary magnet 6238 disposed on the inner surface of the reinforcing plate 6111c can limit the vibration stroke of the diaphragm assembly 622, preventing the voice coil 6241 from slipping out of the magnetic gap 623a.

[0197] Based on the above embodiments, in order to reduce the overall size of the speaker module 60 and save the overall space occupied by the speaker module 60, in some embodiments, please refer to... Figure 34 and Figure 35 , Figure 34 A perspective view of a speaker module 60 provided in some embodiments of this application. Figure 35 for Figure 34 The image shows a cross-sectional view of the speaker module 60. In this embodiment, the outer surface of the first cover plate 6111 is provided with a groove 6111d that is recessed toward the diaphragm assembly 622, and the first auxiliary magnet 6238 is disposed in the groove 6111d.

[0198] In some embodiments, please refer to Figure 34 and Figure 35A portion of the first cover plate 6111 is recessed inward to form a groove 6111d, and a first auxiliary magnet 6238 is disposed within the groove 6111d. Specifically, the first auxiliary magnet 6238 can be bonded to the bottom wall of the groove 6111d. Here, the "bottom wall of the groove 6111d" refers to the side wall opposite the open opening of the groove 6111d. This reduces the size of the speaker module 60 in the Z-axis direction, decreases the overall volume of the speaker module 60, and simplifies the structure and facilitates manufacturing. Furthermore, since a portion of the first cover plate 6111 is recessed inward, this recessed portion can limit the vibration stroke of the diaphragm assembly 622, preventing the voice coil 6241 from slipping out of the magnetic gap 623a.

[0199] For example, please refer to Figure 34 and Figure 35 The groove 6111d is formed by a portion of the reinforcing plate 6111c being recessed inward.

[0200] For further details, please refer to Figure 36 , Figure 36 A cross-sectional view of a speaker module 60 provided in some embodiments of this application. This embodiment is related to... Figure 34 The difference in the speaker module 60 shown is that, in this embodiment, the bottom wall of the groove 6111d is provided with a hollow portion 6111e, and the orthographic projection of the first auxiliary magnet 6238 on the bottom wall of the groove 6111d covers the hollow portion 6111e. In this way, at least a part of the surface of the first auxiliary magnet 6238 can be exposed from the hollow portion 6111e, which is beneficial to increase the suppression effect of the first auxiliary magnet 6238 on the magnetic field lines of the central magnet 6231, thereby further increasing the magnetic field strength in the magnetic gap 623a.

[0201] In some other embodiments, please refer to Figure 37 , Figure 37 This is a cross-sectional view of a speaker module 60 provided in some embodiments of this application. A first cover plate 6111 has a mounting hole 6111f, and a first auxiliary magnet 6238 is disposed within the mounting hole 6111f. The mounting hole 6111f is formed as a through hole penetrating both the inner and outer surfaces of the first cover plate 6111. The outer peripheral wall of the first auxiliary magnet 6238 is connected to the inner edge of the mounting hole 6111f. This facilitates the fixing of the first auxiliary magnet 6238 and effectively prevents resonance in the first cover plate 6111, thus improving the sound quality of the speaker module 60.

[0202] In some embodiments, when the first cover plate 6111 includes a reinforcing plate 6111c, a mounting hole 6111f may be formed on the reinforcing plate 6111c.

[0203] Based on the above embodiments, please continue to refer to Figure 37 At least a portion of the first auxiliary magnet 6238 extends into the front cavity 601. Specifically, a portion of the first auxiliary magnet 6238 extends into the front cavity 601, or the entire first magnet extends into the front cavity 601. This reduces the size of the speaker module 60 in the Z-axis direction, thereby reducing the overall volume of the speaker module 60.

[0204] Based on the above embodiments, the portion of the first auxiliary magnet 6238 located within the mounting hole 6111f is also used to seal the mounting hole 6111f to prevent sound generated by the vibration of the diaphragm assembly 622 from leaking from the mounting hole 6111f. Therefore, to ensure the sealing effect of the first auxiliary magnet 6238 on the mounting hole 6111f, the inner edge of the mounting hole 6111f is sealed to the first auxiliary magnet 6238 to seal the gap between the inner edge of the mounting hole 6111f and the first auxiliary magnet 6238.

[0205] To achieve a sealed connection between the inner edge of the mounting hole 6111f and the first auxiliary magnet 6238, in some embodiments, please refer to... Figure 38 , Figure 38 This is a cross-sectional view of a speaker module 60 provided in some embodiments of this application. In this embodiment, the speaker module 60 further includes a seal 6111g, which is used to seal the gap between the mounting hole 6111f and the first auxiliary magnet 6238. The seal 6111g can be disposed inside the housing 61 or outside the housing 61.

[0206] For example, please refer to Figure 38 The sealing element 6111g is disposed within the housing 61. The sealing element 6111g includes a first connecting piece 6111g1, a sealing piece 6111g2, and a second connecting piece 6111g3, all of which are annular. The first connecting piece 6111g1 is connected to the inner surface of the first cover plate 6111 and surrounds the outer periphery of the mounting hole 6111f. The second connecting piece 6111g3 is connected to the end face of one end of the first auxiliary magnet 6238 that extends into the mounting hole 6111f. The sealing piece 6111g2 is connected between the first connecting piece 6111g1 and the second connecting piece 6111g3. In this way, the sealing element 6111g effectively seals the gap between the mounting hole 6111f and the first auxiliary magnet 6238, and the structure is simple and easy to manufacture.

[0207] In other embodiments, the sealant 6111g may also be a sealant (not shown) filling the space between the mounting hole 6111f and the first auxiliary magnet 6238. This sealant includes, but is not limited to, one or more of UV adhesive (also known as shadowless adhesive), polyurethane, silicone rubber, polysulfide rubber, neoprene rubber, and epoxy resin sealant. This sealant can seal the gap between the inner edge of the mounting hole 6111f and the first auxiliary magnet 6238. This structure is simple, easy to operate, and suitable for sealing gaps of different shapes, offering a wide range of applications and superior flexibility. Furthermore, the sealant further bonds the first auxiliary magnet 6238 to the first cover plate 6111, improving the connection stability between the first auxiliary magnet 6238 and the first cover plate 6111.

[0208] In some embodiments, the first auxiliary magnet 6238 and the first cover plate 6111 are an integral structure. That is, the first auxiliary magnet 6238 and the first cover plate 6111 are formed as a single unit. For example, in some embodiments, the first cover plate 6111 is a plastic part, and in this embodiment, the first cover plate 6111 can be molded onto the first auxiliary magnet 6238 using an injection molding process. This improves the sealing performance between the first auxiliary magnet 6238 and the mounting hole 6111f, eliminates the need for an additional sealing element 6111g, simplifies the assembly steps of the first auxiliary magnet 6238 and the first cover plate 6111, and improves assembly efficiency.

[0209] For further details, please refer to Figure 39 , Figure 39 This is a cross-sectional view of a speaker module 60 according to other embodiments of this application. The speaker module 60 in this embodiment includes, in addition to... Figure 27 In addition to the housing 61, diaphragm assembly 622, voice coil 6241, magnetic circuit system 623, and first auxiliary magnet 6238, the loudspeaker module 60 shown also includes a second auxiliary magnet 6239, which is located on the side of the diaphragm assembly 622 away from the magnetic circuit system 623. The second auxiliary magnet 6239 is spaced apart from the diaphragm assembly 622 to avoid interfering with the movement of the diaphragm assembly 622. The second auxiliary magnet 6239 can be located inside or outside the housing 61.

[0210] The projection of the second auxiliary magnet 6239 onto the diaphragm assembly 622 along the central axis of the diaphragm assembly 622 is the third projection S3, and the projection of the side magnet 6232 onto the diaphragm assembly 622 along the central axis of the diaphragm assembly 622 is the fourth projection. The third projection S3 can be the orthographic projection of the second auxiliary magnet 6239 onto the plane where the dome 6221 is located. The fourth projection S4 is the orthographic projection of the side magnet 6232 onto the plane where the dome 6221 is located.

[0211] The third projection S3 and the fourth projection S4 overlap. The third projection S3 and the fourth projection S4 partially overlap or completely overlap. Specifically, when the first projection S1 and the second projection S2 partially overlap, there are three possible scenarios:

[0212] The first scenario is as follows: Please refer to [link / reference needed]. Figure 40a The third projection S3 and the fourth projection S4 intersect. At this time, a part of the third projection S3 coincides with a part of the fourth projection S4, while another part of the third projection S3 does not coincide with another part of the fourth projection S4.

[0213] The second scenario is as follows: Please refer to [link / reference needed]. Figure 40b The outer contour of the third projection S3 is located within the outer contour of the fourth projection S4, that is, the third projection S3 is contained within the fourth projection S4. At this time, the area of ​​the fourth projection S4 is greater than the area of ​​the third projection S3.

[0214] The third scenario is as follows: Please refer to [link / reference needed]. Figure 40c The outer contour of the fourth projection S4 is located within the outer contour of the third projection S3, that is, the fourth projection S4 can be contained within the third projection S3. At this time, the area of ​​the fourth projection S4 is smaller than the area of ​​the third projection S3.

[0215] Please see Figure 40d When the third projection S3 and the fourth projection S4 completely overlap, their outer contours completely coincide. At this time, the area of ​​the third projection S3 is equal to the area of ​​the fourth projection S4. It should be noted that the phrase "the third projection S3 and the fourth projection S4 completely overlap" in this application should be interpreted broadly. That is, a strict overlap is not required. Due to manufacturing errors, if the area of ​​the third projection S3 is slightly larger or slightly smaller than the area of ​​the fourth projection S4, it can still be considered as a complete overlap.

[0216] The second auxiliary magnet 6239 can be a magnet or a magnetic steel. The magnetic pole of the second auxiliary magnet 6239 near the side magnet 6232 is the same as the magnetic pole of the side magnet 6232 near the second auxiliary magnet 6239, and the magnetic pole of the second auxiliary magnet 6239 away from the side magnet 6232 is opposite to the magnetic pole of the side magnet 6232 near the second auxiliary magnet 6239.

[0217] For example, please refer back to the reference. Figure 39 The end of the side magnet 6232 closest to the second auxiliary magnet 6239 is the S pole, and the end away from the second auxiliary magnet 6239 is the N pole. The end of the second auxiliary magnet 6239 closest to the side magnet 6232 is the S pole, and the end away from the side magnet 6232 is the N pole.

[0218] Therefore, the magnetic field lines of the second auxiliary magnet 6239 and the magnetic field lines of the side magnet 6232 mutually inhibit each other, effectively suppressing the outward divergence of the magnetic field lines of the side magnet 6232. This effectively increases the magnetic flux density and magnetic field strength within the magnetic gap 623a, thereby improving the sensitivity and acoustic performance of the speaker module 60. Simultaneously, since the second auxiliary magnet 6239 is located on the side of the diaphragm assembly 622 furthest from the magnetic circuit system 623, increasing the magnetic flux density within the magnetic gap 623a does not increase the overall volume of the magnetic circuit system 623. This facilitates the miniaturization of the speaker module 60, and during production, there is no need to alter the structure of the magnetic circuit system 623 and the core 62 of the speaker module 60, effectively reducing production costs.

[0219] In some embodiments, the second auxiliary magnet 6239 may be disposed on the first cover plate 6111. Please refer back to the previous section. Figure 39 The second auxiliary magnet 6239 can be disposed on the outer surface of the first cover plate 6111. In other embodiments, the second auxiliary magnet 6239 can also be disposed on the inner surface of the first cover plate 6111. Exemplarily, the second auxiliary magnet 6239 can be disposed on the outer or inner surface of the reinforcing plate 6111c in the first cover plate 6111 by means of adhesive bonding, snap-fit, etc. This facilitates the assembly of the second auxiliary magnet 6239.

[0220] In some other embodiments, please refer to Figure 41 , Figure 41 This is an assembly diagram of the speaker module 60 and the electronic device 100 according to some embodiments of this application. The second auxiliary magnet 6239 can also be disposed on the mid-frame 30 of the electronic device 100. In other embodiments, the second auxiliary magnet 6239 can also be disposed on the housing of the electronic device 100. In this way, the second auxiliary magnet 6239 can be arranged using the space inside the electronic device 100, which is beneficial to achieving a thinner and lighter design of the electronic device 100.

[0221] It is understood that in some other embodiments, the speaker module 60 may only provide the second auxiliary magnet 6239 described above, without providing the first auxiliary magnet 6238. Please refer to [link to relevant documentation]. Figure 42 , Figure 42 This is a cross-sectional view of a speaker module 60 according to some embodiments of this application. The speaker module 60 in this embodiment is... Figure 3 The difference between the speaker module 60 shown is that the speaker module 60 in this embodiment includes, in addition to, Figure 3In addition to the housing 61, diaphragm assembly 622, voice coil 6241, and magnetic circuit system 623 in the speaker module 60 shown in this embodiment, the speaker module 60 also includes a second auxiliary magnet 6239, which is located on the side of the diaphragm assembly 622 away from the magnetic circuit system 623. The second auxiliary magnet 6239 is spaced apart from the diaphragm assembly 622 to avoid interference with the movement of the diaphragm assembly 622. The second auxiliary magnet 6239 can be located inside or outside the housing 61. The projection of the second auxiliary magnet 6239 onto the diaphragm assembly 622 along the central axis of the diaphragm assembly 622 is a third projection S3, and the projection of the side magnet 6232 onto the diaphragm assembly 622 along the central axis of the diaphragm assembly 622 is a fourth projection S4. The third projection S3 can be the orthographic projection of the second auxiliary magnet 6239 onto the plane of the dome 6221. The fourth projection S4 is the orthographic projection of the side magnet 6232 onto the plane containing the dome 6221. The third projection S3 overlaps with the fourth projection S4. The third projection S3 and the fourth projection S4 partially overlap or completely overlap.

[0222] In this embodiment, the magnetic pole direction of the second auxiliary magnet 6239 can be the same as... Figure 39 and Figure 41 The magnetic poles of the second auxiliary magnet 6239 shown are in the same direction, which will not be described again here.

[0223] In this embodiment, the second auxiliary magnet 6239 may be disposed on the first cover plate 6111. See also... Figure 41 The second auxiliary magnet 6239 can be disposed on the outer surface of the first cover plate 6111. In other embodiments, the second auxiliary magnet 6239 can also be disposed on the inner surface of the first cover plate 6111. Exemplarily, the second auxiliary magnet 6239 can be disposed on the outer or inner surface of the reinforcing plate 6111c in the first cover plate 6111 by means of adhesive bonding, snap-fit, etc. This facilitates the assembly of the second auxiliary magnet 6239.

[0224] In some other embodiments, please refer to Figure 43 The second auxiliary magnet 6239 can also be disposed on the mid-frame 30 of the electronic device 100. In other embodiments, the second auxiliary magnet 6239 can also be disposed on the outer casing of the electronic device 100. This application does not limit the specific location of the second auxiliary magnet 6239.

[0225] Since the electronic device 100 provided in some embodiments of this application includes the above-described speaker module 60, it is possible to improve the audio performance of the electronic device 100 while satisfying the thin design of the electronic device 100.

[0226] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0227] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. 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 spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A loudspeaker module (60) characterized by, Comprise: A diaphragm group (622); A voice coil (6241) connected with the diaphragm group (622); A magnetic circuit system (623) comprising a center magnet (6231) and a side magnet (6232) arranged around the circumference of the center magnet (6231), the voice coil (6241) cooperating with the magnetic circuit system (623) to drive the diaphragm group (622) to vibrate; A first auxiliary magnet (6238) located on the side of the diaphragm group (622) away from the magnetic circuit system (623), the projection of the first auxiliary magnet (6238) on the diaphragm group (622) along the central axis of the diaphragm group (622) being a first projection (S1), the projection of the center magnet (6231) on the diaphragm group (622) along the central axis of the diaphragm group (622) being a second projection (S2), the first projection (S1) overlapping the second projection (S2), the magnetic pole of the first auxiliary magnet (6238) close to one end of the center magnet (6231) being the same as the magnetic pole of the center magnet (6231) close to the first auxiliary magnet (6238), and the magnetic pole of the first auxiliary magnet (6238) away from one end of the center magnet (6231) being opposite to the magnetic pole of the center magnet (6231) close to the first auxiliary magnet (6238); A housing (61), the diaphragm group (622) being arranged in the housing (61), the diaphragm group (622) dividing the housing (61) into a front cavity (601) and a rear cavity (602), the magnetic circuit system (623) being located in the rear cavity (602), the housing (61) comprising a first cover plate (6111) opposite to the diaphragm group (622), the front cavity (601) being located between the first cover plate (6111) and the diaphragm group (622), the first cover plate (6111) being provided with a mounting hole (6111f), at least part of the first auxiliary magnet (6238) being arranged in the mounting hole (6111f), the mounting hole (6111f) being a through hole penetrating the inner surface and the outer surface of the first cover plate (6111), the outer peripheral wall of the first auxiliary magnet (6238) being connected with the inner edge of the mounting hole (6111f); A seal (6111g) for sealing a gap between the mounting hole (6111f) and the first auxiliary magnet (6238), the seal (6111g) being disposed in the housing (61), the seal (6111g) including a first connecting piece (6111g1), a sealing piece (6111g2), and a second connecting piece (6111g3), the first connecting piece (6111g1), the sealing piece (6111g2), and the second connecting piece (6111g3) each being formed in an annular shape, the first connecting piece (6111g1) being connected to an inner surface of the first cover plate (6111) and surrounding an outer periphery of the mounting hole (6111f), the second connecting piece (6111g3) being connected to an end surface of an end of the first auxiliary magnet (6238) extending into the mounting hole (6111f), and the sealing piece (6111g2) being connected between the first connecting piece (6111g1) and the second connecting piece (6111g3).

2. The loudspeaker module (60) according to claim 1, characterized in that At least a portion of the first auxiliary magnet (6238) extends into the front cavity (601).

3. The loudspeaker module (60) according to claim 1 or 2, characterized in that The first cover plate and the first auxiliary magnet (6238) are in an integrated structure.

4. The loudspeaker module (60) according to claim 1, characterized in that The first cover plate (6111) includes: A cover plate main body (6111a) having an assembly opening (6111b) formed therein; A reinforcing plate (6111c) disposed at the assembly opening (6111b) and blocking the assembly opening (6111b), the first auxiliary magnet (6238) being disposed on the reinforcing plate (6111c).

5. The loudspeaker module (60) of claim 1, wherein, Further comprising: A second auxiliary magnet (6239) located on a side of the diaphragm group away from the magnetic circuit system (623), a projection of the second auxiliary magnet (6239) on the diaphragm group (622) along a central axis of the diaphragm group (622) being a third projection (S3), a projection of the side magnet (6232) on the diaphragm group (622) along the central axis of the diaphragm group (622) being a fourth projection (S4), the third projection (S3) and the fourth projection (S4) overlapping, a magnetic pole of the second auxiliary magnet (6239) near one end of the second auxiliary magnet (6239) being the same as a magnetic pole of the side magnet (6232) near one end of the side magnet (6232), and a magnetic pole of the second auxiliary magnet (6239) away from one end of the second auxiliary magnet (6239) being opposite to a magnetic pole of the side magnet (6232) near one end of the side magnet (6232).

6. The loudspeaker module (60) according to claim 5, characterized in that Further comprising: The second auxiliary magnet (6238) is disposed on a side of the first cover plate (6111) away from the diaphragm group (622).

7. An electronic device (100), characterized by Including: An outer shell having a sound hole (22a) formed therein; A speaker module (60) is provided in the housing, the speaker module (60) is the speaker module (60) as claimed in any one of claims 1-6, the speaker module (60) has a sound outlet channel (60a), and the sound outlet channel (60a) communicates with the sound hole (22a).

8. The electronic device (100) according to claim 7, characterized by Also included are: A middle frame (30) is provided in the housing, and a second auxiliary magnet (6239) is provided on the middle frame (30).

Images