CN115002625A

CN115002625A - Loudspeaker module and electronic equipment

Info

Publication number: CN115002625A
Application number: CN202111040056.6A
Authority: CN
Inventors: 李运海; 褚建飞; 叶千峰
Original assignee: Beijing Honor Device Co Ltd
Current assignee: Beijing Honor Device Co Ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-09-02

Abstract

The application discloses speaker module and electronic equipment relates to electronic equipment technical field, and this speaker module can be on the basis that does not increase magnetic circuit and kernel volume, and the magnetic field intensity in the increase magnetic gap can compromise equipment slimming and audio performance simultaneously. Wherein, the speaker module includes: the voice coil is connected with the vibrating diaphragm group, the magnetic circuit system comprises a central magnet and side magnets, the side magnets are arranged around the periphery of the central magnet, and the voice coil is matched with the magnetic circuit system to drive the vibrating diaphragm group to vibrate; the first auxiliary magnet is located on one side, far away from the magnetic circuit system, of the diaphragm group, 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 central magnet on the diaphragm group along the central axis of the diaphragm group is a second projection, the first projection and the second projection are overlapped, and the magnetic pole of one end, close to the central magnet, of the first auxiliary magnet is the same as the magnetic pole of one end, close to the first auxiliary magnet, of the central magnet.

Description

Loudspeaker module and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a loudspeaker module and electronic equipment.

Background

Along with the rapid development of science and technology, the prevalence of speaker is higher and higher, and people not only are limited to video audio's broadcast to the requirement of speaker module, more have higher requirement to the tone quality of speaker module broadcast sound.

However, in the speaker module of the related art, the magnetic circuit of the magnetic circuit system has a low magnetic field strength in the magnetic gap formed between the center magnet and the side magnet, resulting in poor acoustic performance.

Disclosure of Invention

The application provides a speaker module and electronic equipment can be on the basis that does not increase magnetic circuit and kernel volume, and the magnetic field intensity in the increase magnetic gap can compromise equipment slimming and audio performance simultaneously.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, the present application provides a speaker module, comprising: the loudspeaker comprises a diaphragm group, a voice coil, a magnetic circuit system and a first auxiliary magnet, wherein the voice coil is connected with the diaphragm group; the magnetic circuit system comprises a central magnet and a side magnet, the side magnet is arranged around the circumference of the central magnet, and the voice coil is matched with the magnetic circuit system to drive the vibrating diaphragm group to vibrate; the first auxiliary magnet is located on one side, far away from the magnetic circuit system, of the diaphragm group, 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 central magnet on the diaphragm group along the central axis of the diaphragm group is a second projection, the first projection and the second projection are overlapped, the magnetic pole, close to one end of the central magnet, of the first auxiliary magnet is the same as the magnetic pole, close to one end of the first auxiliary magnet, of the central magnet, and the magnetic pole, far away from one end of the central magnet, of the first auxiliary magnet is opposite to the magnetic pole, close to one end of the first auxiliary magnet, of the central magnet.

The application provides a speaker module, one side through keeping away from magnetic circuit at vibrating diaphragm group sets up first auxiliary magnet, the magnetic line of force that makes first auxiliary magnet can restrain each other with the magnetic line of force of central magnet, the magnetic line of force that has inhibited central magnet effectively outwards diverges to can increase the magnetic flux density in the magnetic gap effectively, magnetic field intensity in the magnetic gap has been increased, and then the sensitivity of speaker module has been improved, the acoustic performance of speaker module has been improved. Simultaneously, because first auxiliary magnet is located the one side of keeping away from magnetic circuit of diaphragm group, when improving magnetic flux density in the magnetic gap, can not increase magnetic circuit's whole volume, be favorable to realizing the miniaturized design of speaker module, moreover in process of production, need not to change the magnetic circuit of speaker module and the structure of kernel, reduced manufacturing cost effectively.

In a possible design manner of the first aspect, the speaker module further includes a housing, the diaphragm group is disposed in the housing, the diaphragm group partitions the housing into a front cavity and a rear cavity, the magnetic circuit system is located in the rear cavity, the housing includes a first cover plate, the first cover plate is opposite to the diaphragm group, the front cavity is defined between the first cover plate and the diaphragm group, and the first auxiliary magnet is disposed on the first cover plate. In this way, the fixing of the first auxiliary magnet is facilitated.

In a possible embodiment of the first aspect, the first auxiliary magnet may be arranged on an outer surface of the first cover plate. Like this, can be convenient for first auxiliary magnet's fixed, and can avoid first auxiliary magnet to occupy the space of front chamber, can save the front chamber space from this, be favorable to improving the sensitivity of speaker module.

In a possible embodiment of the first aspect, the first auxiliary magnet may be arranged on an inner surface of the first cover plate. In this way, the fixing of the first auxiliary magnet can be also easily achieved, so that the position of the first auxiliary magnet is stable, and the size of the speaker module in the Z-axis direction can be reduced. In addition, the first auxiliary magnet arranged on the inner surface of the first cover plate can limit the vibration stroke of the diaphragm group, and the voice coil is prevented from slipping from the magnetic gap.

In a possible design of the first aspect, a groove that is recessed toward the diaphragm group is provided on an outer surface of the first cover plate, and the first auxiliary magnet is provided in the groove. Therefore, the whole volume of the loudspeaker module can be reduced, and the whole occupied space of the loudspeaker module is saved.

In a possible design manner of the first aspect, a hollow portion is disposed on the bottom wall of the groove, and an orthographic projection of the first auxiliary magnet on the bottom wall of the groove covers the hollow portion. Thus, at least part of the surface of the first auxiliary magnet can be exposed from the hollow part, which is beneficial to increasing the inhibiting effect of the first auxiliary magnet on the magnetic line of force of the central magnet, thereby further increasing the magnetic field intensity in the magnetic gap.

In a possible design of the first aspect, the first cover plate is provided with a mounting hole, and the first auxiliary magnet is provided in the mounting hole. The mounting hole is formed as a through hole penetrating the inner surface and the outer surface of the first cover plate. The outer peripheral wall of the first auxiliary magnet is connected to the inner edge of the mounting hole. Like this, can conveniently realize the fixed of first auxiliary magnet, can avoid first apron to produce resonance effectively simultaneously, be favorable to improving the tone quality of speaker module.

In a possible embodiment of the first aspect, at least part of the first auxiliary magnet projects into the front space. Specifically, a part of the first auxiliary magnet protrudes into the front cavity, or the entire first magnet protrudes into the front cavity. Therefore, the size of the loudspeaker module in the Z-axis direction can be reduced, namely the thickness of the loudspeaker module can be reduced, and the whole volume of the loudspeaker module is reduced.

In a possible embodiment of the first aspect, a seal is provided in the housing for sealing a gap between the first auxiliary magnet and the mounting hole. Like this, can seal the clearance between mounting hole and the first auxiliary magnet effectively through the sealing member, and simple structure, processing is convenient.

In a possible embodiment of the first aspect, the sealing element comprises a first connecting web, a sealing web and a second connecting web, which are each formed in an annular shape. The first connecting piece is connected with the inner surface of the first cover plate and surrounds the periphery of the mounting hole, the second connecting piece is connected with the end face of one end, extending into the mounting hole, of the first auxiliary magnet, and the sealing piece is connected between the first connecting piece and the second connecting piece.

In one possible embodiment of the first aspect, the sealing element may be a sealing compound filled between the mounting hole and the first auxiliary magnet. The gap between the inner edge of the mounting hole and the first auxiliary magnet can be sealed by the sealant. The structure is simple, the operation is convenient, the sealing device is suitable for sealing gaps with different shapes, the application range is wide, and the flexibility is excellent. The first auxiliary magnet is further bonded on the first cover plate through the sealant, and the connection stability of the first auxiliary magnet and the first cover plate can be improved.

In a possible embodiment of the first aspect, the first cover plate and the first auxiliary magnet are of a one-piece structure. In this embodiment, the first cover plate may be a plastic member. Therefore, the sealing performance between the first auxiliary magnet and the mounting hole can be improved, a sealing piece does not need to be additionally arranged, the assembling steps of the first auxiliary magnet and the first cover plate are simplified, and the assembling efficiency is improved.

In a possible design manner of the first aspect, the first cover plate includes a cover plate main body and a reinforcing plate, the cover plate main body is provided with an assembly opening, the reinforcing plate is arranged at the assembly opening and seals the assembly opening, and the first auxiliary magnet is arranged on the reinforcing plate. From this, through setting up the reinforcing plate, can be on the basis of shell thickness before not increasing, the overall structure intensity of shell before improving, simultaneously, through setting up the reinforcing plate, can also avoid first apron to produce resonance effectively, be favorable to improving the tone quality of speaker module.

In a possible embodiment of the first aspect, the groove is formed in the reinforcing plate.

In a possible embodiment of the first aspect, the mounting hole is formed in the reinforcing plate.

In a possible design manner of the first aspect, the speaker module further includes a second auxiliary magnet, the second auxiliary magnet is located on a side of the diaphragm group away from the magnetic circuit system, a projection of the second auxiliary magnet on the diaphragm group along a central axis of the diaphragm group is a third projection, a projection of the side magnet on the diaphragm group along the central axis of the diaphragm group is a fourth projection, the third projection and the fourth projection overlap, a magnetic pole of one end of the second auxiliary magnet close to the side magnet is the same as a magnetic pole of one end of the side magnet close to the second auxiliary magnet, and a magnetic pole of one end of the second auxiliary magnet far away from the side magnet is opposite to a magnetic pole of one end of the side magnet close to the second auxiliary magnet.

From this, through setting up the second auxiliary magnet, the magnetic line of force of second auxiliary magnet and the magnetic line of force of limit magnet can restrain each other, have restrained the magnetic line of force of limit magnet outwards to disperse effectively to can increase the magnetic flux density in the magnetic gap effectively, increase the magnetic field intensity in the magnetic gap, and then improve the sensitivity of speaker module, improve the acoustic performance of speaker module. Simultaneously, because the second auxiliary magnet is located the one side of keeping away from magnetic circuit of diaphragm group, when improving magnetic flux density in the magnetic gap, can not increase magnetic circuit's whole volume, be favorable to realizing the miniaturized design of speaker module, moreover in process of production, need not to change the magnetic circuit of speaker module and the structure of kernel, reduced manufacturing cost effectively.

In one possible embodiment of the first aspect, the second auxiliary magnet is arranged on the first cover plate.

In one possible embodiment of the first aspect, the second auxiliary magnet is arranged on a bezel or a housing of the electronic device.

In a second aspect, the present application provides a speaker module, comprising: the voice coil is connected with the vibrating diaphragm group; the magnetic circuit system comprises a central magnet and a side magnet, the side magnet is arranged around the circumference of the central magnet, and the voice coil is matched with the magnetic circuit system to drive the vibrating diaphragm group to vibrate; the second auxiliary magnet is located on one side, far away from the magnetic circuit system, of the diaphragm group, the projection of the second auxiliary magnet on the diaphragm group along the central axis of the diaphragm group is a third projection, the projection of the side magnet on the diaphragm group along the central axis of the diaphragm group is a fourth projection, the third projection and the fourth projection are overlapped, the magnetic pole, close to one end of the side magnet, of the second auxiliary magnet is the same as the magnetic pole, close to one end of the second auxiliary magnet, of the side magnet, and the magnetic pole, far away from one end of the side magnet, of the second auxiliary magnet is opposite to the magnetic pole, close to one end of the second auxiliary magnet, of the side magnet.

The utility model provides a speaker module, one side through keeping away from magnetic circuit at vibrating diaphragm group sets up the supplementary magnet of second, the magnetic line of force that makes the supplementary magnet of second and the magnetic line of force of limit magnet can restrain each other, the magnetic line of force that has inhibited the limit magnet effectively outwards diverges to can increase the magnetic flux density in the magnetic gap effectively, magnetic field intensity in the magnetic gap has been increased, and then the sensitivity of speaker module has been improved, the acoustic performance of speaker module has been improved. Simultaneously, because the second auxiliary magnet is located the one side of keeping away from magnetic circuit of diaphragm group, when improving magnetic flux density in the magnetic gap, can not increase magnetic circuit's whole volume, be favorable to realizing the miniaturized design of speaker module, moreover in process of production, need not to change the magnetic circuit of speaker module and the structure of kernel, reduced manufacturing cost effectively.

In a possible design manner of the second aspect, the speaker module further includes a housing, the diaphragm group is disposed in the housing, the diaphragm group divides the housing into a front cavity and a rear cavity, the magnetic circuit system is located in the rear cavity, the housing includes a first cover plate, the first cover plate is opposite to the diaphragm group, the front cavity is defined between the first cover plate and the diaphragm group, and the second auxiliary magnet is disposed on the first cover plate. In this way, the fixing of the second auxiliary magnet is facilitated.

In a third aspect, the present application provides an electronic device, comprising: the shell is provided with a sound outlet hole; the loudspeaker module is arranged in the shell and is provided with a sound outlet channel which is communicated with the sound outlet hole.

In one possible design of the third aspect, the electronic device further includes a middle frame, the middle frame is disposed in the housing, and the second auxiliary magnet is disposed on the middle frame.

In one possible embodiment of the third aspect, the first auxiliary magnet is provided on the middle frame.

Because the electronic equipment that this application some embodiments provided includes above-mentioned technical scheme the speaker module, consequently can promote electronic equipment's audio performance when satisfying electronic equipment's slim design.

Drawings

Fig. 1 is a perspective view of an electronic device provided by some embodiments of the present application;

FIG. 2 is an exploded view of the electronic device of FIG. 1;

FIG. 3 is a perspective view of a speaker module in the electronic device of FIG. 1;

fig. 4 is an exploded view of the speaker module shown in fig. 3;

fig. 5a is a perspective view of a front housing of the speaker module of fig. 4;

FIG. 5b is an exploded view of the front shell shown in FIG. 5 a;

FIG. 5c is a schematic view of the front housing shown in FIG. 5a as viewed from below;

fig. 6 is a schematic structural view of a rear housing of the speaker module shown in fig. 4;

FIG. 7 is a schematic diagram of the structure of the inner core of the speaker module shown in FIG. 4;

FIG. 8 is an enlarged view of area A of the schematic structure shown in FIG. 5 c;

fig. 9 is a schematic view of the assembly of the core and the housing of the speaker module shown in fig. 4;

FIG. 10 is a perspective view of a core provided by some embodiments of the present application;

FIG. 11 is an exploded view of the core shown in FIG. 10;

FIG. 12 is a perspective view of the basin stand in the kernel shown in FIG. 11;

FIG. 13 is a schematic diagram of one configuration of a diaphragm stack in the core shown in FIG. 11;

FIG. 14 is a perspective cross-sectional view of the diaphragm assembly shown in FIG. 13 taken along line A-A;

FIG. 15 is an enlarged view of area B of the perspective cross-sectional view shown in FIG. 14;

FIG. 16 is an assembly view of the diaphragm pack shown in FIG. 13 with the basin stand shown in FIG. 12;

FIG. 17 is a perspective sectional view at line B-B of the assembled view of FIG. 16;

FIG. 18 is a schematic view of the structure of the voice coil assembly of the core shown in FIG. 11;

FIG. 19 is an exploded view of the voice coil assembly shown in FIG. 18;

FIG. 20 is an assembly view of the voice coil assembly shown in FIG. 18 and the diaphragm assembly shown in FIG. 14;

FIG. 21 is a schematic diagram of the electrical connection structure of the core shown in FIG. 11;

FIG. 22 is an electrically conductive assembly view of the electrical connection structure shown in FIG. 21 with the voice coil assembly and the frame;

FIG. 23 is a schematic diagram of the magnetic circuit system of the core shown in FIG. 11;

fig. 24 is an exploded view of the magnetic circuit system shown in fig. 23;

FIG. 25 is a perspective cross-sectional view taken along line C-C of the inner core shown in FIG. 10;

FIG. 26 is an assembly view of the magnetic circuit system shown in FIG. 24 and the basin stand shown in FIG. 12;

fig. 27 is a perspective view of a speaker module according to further embodiments of the present application;

fig. 28 is a top view of the speaker module shown in fig. 27;

FIG. 29a is a cross-sectional view taken along line D-D of the top view shown in FIG. 28;

FIG. 29b is a schematic view of a projection process of the first auxiliary magnet;

FIG. 29c is a schematic view of a first projection and a second projection according to some embodiments of the present disclosure;

FIG. 29d is a schematic view of a first projection and a second projection in accordance with further embodiments of the present application;

FIG. 29e is a schematic view of a first projection and a second projection in accordance with still other embodiments of the present application;

FIG. 29f is a schematic view of a first projection and a second projection in accordance with still other embodiments of the present application;

fig. 29g is a cross-sectional view of a speaker module according to further embodiments of the present application;

fig. 30 is a schematic view of magnetic line emission of the speaker module shown in fig. 3;

fig. 31 is a schematic view of magnetic line emission of the speaker module shown in fig. 27;

FIG. 32 is a diagram illustrating the results of sound loudness testing of the speaker modules shown in FIGS. 3 and 27;

FIG. 33 is a graph showing the difference between the sound loudness of the speaker modules shown in FIGS. 3 and 27;

fig. 34 is a perspective view of a speaker module according to still other embodiments of the present application;

fig. 35 is a cross-sectional view of the speaker module shown in fig. 34;

fig. 36 is a cross-sectional view of a speaker module according to further embodiments of the present application;

fig. 37 is a cross-sectional view of a speaker module according to further embodiments of the present application;

fig. 38 is a cross-sectional view of a speaker module according to further embodiments of the present application;

FIG. 39 is a cross-sectional view of a speaker module according to still other embodiments of the present application;

FIG. 40a is a schematic view of a third projection and a fourth projection in some embodiments of the present application;

FIG. 40b is a schematic view of a third projection and a fourth projection in accordance with further embodiments of the present application;

FIG. 40c is a schematic view of a third projection and a fourth projection in accordance with still further embodiments of the present application;

FIG. 40d is a schematic view of a third projection and a fourth projection in accordance with still other embodiments of the present application;

fig. 41 is an assembly view of a speaker module and an electronic device according to some embodiments of the present application;

fig. 42 is a cross-sectional view of a speaker module according to further embodiments of the present application;

fig. 43 is an assembly view of a speaker module and an electronic device according to further embodiments of the present application.

Reference numerals:

100. an electronic device;

10. a screen; 11. a light-transmitting cover plate; 12. a display screen; 20. a back shell; 21. a back cover; 22. a frame; 22a, a sound outlet; 22b, a socket; 30. a middle frame;

301. a main circuit board; 302. a sub circuit board; 303. a connecting structure;

40. a battery; 50. a USB device;

60. a speaker module; 60a, a sound channel;

61. a housing; 61a, a fixing portion; 601. a front cavity; 602. a rear cavity;

611. a front housing; 6111. a first cover plate; 6111a, a cover plate main body; 6111b, assembling port; 6111c, reinforcing plate; 6111d, groove; 6111e, a hollow part; 6111f, mounting holes; 6111g, sealing element; 6111g1, first connecting piece; 6111g2, sealing plate; 6111g3, second connecting sheet; 6112. a first side frame; 6112a, a first step surface; 6112b, a second step surface; 6112c, limit rib;

612. a rear housing; 6121. a flat plate portion; 6122. a second side frame;

62. a kernel; 62a, a fixing surface;

621. a basin stand; 621a, a first short side portion; 621b, a second short side portion; 621c, a first long side portion; 6211c, a first notch; 621d, a second long side portion; 6211d, a second notch;

622. a diaphragm group; 6221. a ball top; 6221a, a first top surface; 6221b, a first bottom surface; 6221c, a limit groove; 6222. vibrating diaphragm; 6222a, a first fixing part; 6222a1, a second top surface; 6222a2, a second bottom face; 6222b, a hinge; 6222c, a second fixing part; 6222c1, a third top surface; 6222c2, third bottom face;

623. a magnetic circuit system; 6231. a central magnet; 6232. a side magnet; 6232a, a first side magnet; 6232b, a second side magnet; 6232c, a third side magnet; 6232d, a fourth side magnet; 6233. a central magnetic conductive yoke; 6234. an edge yoke; 6235. a lower magnetic yoke; 6238. a first auxiliary magnet; 6239. a second auxiliary magnet; 623a, magnetic gap;

624. a voice coil group; 6241. a voice coil; 6241a, a voice coil top surface; 6241b, a voice coil bottom surface; 6242. a voice coil former; 6242a, a first supporting part; 6242a1, a first support body; 6242a2, a first extension; 6242a3, a second extension; 6242b, a first connection portion; 6242b1, a second support body; 6242b2, a third extension; 6242c, a second connecting portion; 6242c1, a third support body; 6242c2, a fourth extension; 6242d, a card interface;

625. an electrical connection structure; 625a, a first electrical connection unit; 625b, a second electrical connection unit; 625c, a connection terminal; 6251c, a first connecting structure; 6252c, a second connecting structure.

Detailed Description

In the embodiments of the present application, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth" may explicitly or implicitly include one or more of the features.

In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the embodiment of the present application, "and/or" is only one kind of association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

The application provides an electronic device, which is a type of electronic device with a sound playing function. Specifically, the electronic device includes, but is not limited to, a mobile phone, a tablet personal computer (tablet personal computer), a laptop computer (laptop computer), a Personal Digital Assistant (PDA), a personal computer, a notebook computer, a vehicle-mounted device, a wearable device, a walkman, a radio, and the like. Wherein, wearable devices include but are not limited to smart bracelet, smart watch, smart head-mounted display, smart glasses, etc.

Referring to fig. 1 and fig. 2, fig. 1 is a perspective view of an electronic device 100 according to some embodiments of the present disclosure, and fig. 2 is an exploded view of the electronic device 100 shown in fig. 1. The electronic device 100 shown in fig. 1 is illustrated as a mobile phone. In this example, the electronic device 100 includes a screen 10, a back case 20, a main circuit board 301, a sub circuit board 302, a connection structure 303, a battery 40, a Universal Serial Bus (USB) device, and a speaker module 60.

It is to be understood that fig. 1 and 2 and the related drawings below only schematically illustrate some components included in the electronic device 100, and the actual shape, the actual size, the actual position and the actual configuration of the components are not limited by fig. 1 and 2 and the following drawings. In addition, when the electronic apparatus 100 is an apparatus of some other form, the electronic apparatus 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.

In the embodiment shown in fig. 1, the electronic device 100 has a rectangular flat plate shape. For convenience of the following description of the embodiments, an XYZ coordinate system is established. Specifically, the width direction of the electronic device 100 is defined as the X-axis direction, the length direction of the electronic device 100 is defined as the Y-axis direction, and the thickness direction of the electronic device 100 is defined as the Z-axis direction. It is understood that the coordinate system setting of the electronic device 100 can be flexibly set according to actual needs, and is not particularly limited herein. In other embodiments, the shape of the electronic device 100 may also be a square flat plate, a circular flat plate, an oval flat plate, and so on.

The screen 10 is used to display images, videos, and the like. The screen 10 includes a light-transmissive cover 11 and a display screen 12 (english name: panel, also called display panel). The transparent cover plate 11 and the display screen 12 are stacked and fixedly connected by gluing or the like. The light-transmitting cover plate 11 is mainly used for protecting and preventing dust of the display screen 12. The material of the transparent cover plate 11 includes, but is not limited to, glass. The display 12 may be a flexible display or a rigid display. For example, the display 12 may be an organic light-emitting diode (OLED) display, an active matrix organic light-emitting diode (AMOLED) display, a mini-OLED (mini-organic light-emitting diode) display, a micro-led (micro-organic light-emitting diode) display, a micro-OLED (micro-organic light-emitting diode) display, a quantum dot light-emitting diode (QLED) display, a Liquid Crystal Display (LCD), or the like.

The back case 20 forms an outer case of the electronic device 100. The back case 20 serves to protect internal electronics of the electronic device 100. The material of the back shell 20 includes, but is not limited to, metal, ceramic, plastic, and glass. In order to ensure the structural strength of the back case 20 while achieving the lightness and thinness of the electronic device 100, the back case 20 may be made of metal. The back case 20 includes a back cover 21 and a bezel 22. The back cover 21 is located on one side of the display 12 away from the transparent cover plate 11, and is stacked on the transparent cover plate 11 and the display 12. The frame 22 is located between the back cover 21 and the transparent cover plate 11, and the frame 22 is fixed on the back cover 21. Illustratively, the frame 22 may be fixedly attached to the back cover 21 by an adhesive. The frame 22 may also be integrally formed with the back cover 21, that is, the frame 22 and the back cover 21 are a unitary structure. The light-transmitting cover plate 11 is fixed on the frame 22. In some embodiments, the light-transmissive cover plate 11 may be fixed to the frame 22 by gluing. The light-transmitting cover plate 11, the back cover 21 and the frame 22 enclose an internal accommodating space of the electronic device 100. The internal receiving space receives the display screen 12, the main circuit board 301, the sub circuit board 302, the connection structure 303, the battery 40, the USB device 50, and the speaker module 60.

In some embodiments, referring to fig. 2, the electronic device 100 further includes a middle frame 30. The middle frame 30 is fixed on the inner surface of the frame 22 for a circle. For example, the middle frame 30 may be fixed to the side frame 22 by welding, and the middle frame 30 may also be formed integrally with the side frame 22. The middle frame 30 serves as a 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 may be fixed to the middle frame 30 by screwing, clipping, welding, or the like.

When the electronic device 100 does not include the middle frame 30, the main circuit board 301, the sub circuit board 302, the battery 40, and the speaker module 60 may be fixed to the surface of the display 12 facing the back cover 21 by screwing, clipping, welding, or the like, or may be fixed to the inner surface of the back cover 21 by screwing, clipping, welding, or the like.

The main circuit board 301 is used for integrating a control chip. The control chip may be, for example, an Application Processor (AP), a double data rate synchronous dynamic random access memory (DDR), a Universal Flash Storage (UFS), and the like. In some embodiments, the main circuit board 301 is electrically connected to the display screen 12, and the main circuit board 301 is used for controlling the display screen 12 to display images or videos.

The main circuit board 301 may be a hard circuit board, a flexible circuit board, or a rigid-flex circuit board. The main circuit board 301 may be an FR-4 dielectric board, a Rogers (Rogers) dielectric board, a hybrid FR-4 and Rogers dielectric board, or the like. Here, FR-4 is a code for a grade of flame-resistant material, and the Rogers dielectric plate is a high-frequency plate.

The secondary circuit board 302 is used to integrate electronic components such as an antenna (e.g., a 5G antenna) rf front end, a Universal Serial Bus (USB) device, and the like.

The sub circuit board 302 may be a hard circuit board, a flexible circuit board, or a rigid-flex circuit board. The daughter circuit board 302 may be implemented with an FR-4 dielectric board, a Rogers (Rogers) dielectric board, a hybrid FR-4 and Rogers dielectric board, or the like.

The sub circuit board 302 is electrically connected with the main circuit board 301 through the connecting structure 303, so as to realize data and signal transmission between the sub circuit board 302 and the main circuit board 301. The connection structure 303 may be a Flexible Printed Circuit (FPC). In other embodiments, the connection structure 303 may also be a wire or a lacquered wire.

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 within the electronic device 100, such as the display 12, the main circuit board 301, the sub-circuit board 302, and the speaker module 60. In some embodiments, the surface of the middle frame 30 facing the back cover 21 is provided with a battery 40 mounting groove, and the battery 40 is mounted in the battery 40 mounting groove.

The USB device 50 is connected to the sub circuit board 302. The USB device 50 is an interface device conforming to the USB standard specification. Specifically, the USB device 50 may be a Mini USB device, a Micro USB device, a USB Type C device, or the like. The USB device 50 is used to connect a charger via the socket 22b on the frame 22 to charge the electronic device 100, to transmit data between the electronic device 100 and a peripheral device, and to connect an earphone to play audio through the earphone. The USB device 50 may also be used to connect other electronic devices 100, such as Augmented Reality (AR) devices.

The speaker module 60 is used to restore audio signals such as music and voice into sound, and can support the function of audio playing. In some embodiments, the speaker module 60 is electrically connected to the sub circuit board 302. At this time, 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 an audio signal by the speaker module 60 to be output. Specifically, the speaker module 60 has a sound outlet channel 60 a. The sound signal output from the speaker module 60 is output from the sound output channel 60 a. Referring to fig. 1 and 2, the frame 22 is provided with sound holes 22 a. The sound outlet hole 22a communicates with the sound outlet passage 60 a. The sound signal output from the sound outlet channel 60a is further output from the electronic device 100 through the sound outlet hole. In other embodiments, the speaker module 60 may also be directly electrically connected to the main circuit board 301 through a connection structure 303 such as an FPC, a wire, an enamel wire, or the like.

Referring to fig. 3, fig. 3 is a perspective view of the speaker module 60 in the electronic device 100 shown in fig. 1, and fig. 4 is an exploded view of the speaker module 60 shown in fig. 3. In the present embodiment, the speaker module 60 includes a housing 61 and a core 62.

It should be noted that fig. 3 and 4 only schematically show some components included in the speaker module 60, and the actual shape, the actual size, the actual position, and the actual configuration of these components are not limited by fig. 3 and 4. The coordinate system in fig. 3 is the same as the coordinate system in fig. 1. That is, the orientation relationship of each component in the speaker module 60 in fig. 3 in the coordinate system shown in fig. 3 is the same as the orientation relationship of each component in the speaker module 60 in the coordinate system shown in fig. 1 when the speaker module 60 is applied to the electronic device 100 shown in fig. 1.

The housing 61 is provided with a fixing portion 61 a. The fixing portion 61a includes, but is not limited to, a through hole, a threaded hole, a snap, a slot, a limit step, and the like. In the embodiment shown in fig. 3 and 4, the fixing portion 61a includes two through holes. The through holes are used to mate with screws to secure the speaker module 60 within the electronic device 100 shown in fig. 1.

The material of the housing 61 includes, but is 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, and is beneficial to reducing the processing cost of the speaker module 60.

The housing 61 may be a unitary structure or may be formed by assembling a plurality of parts. In some embodiments, the housing 61 includes a front shell 611 and a rear shell 612. The housing 61 is formed by assembling the front shell 611 and the rear shell 612, which is beneficial to reducing the molding difficulty and the assembling difficulty of the housing 61.

Specifically, referring to fig. 5a, fig. 5b and fig. 5c, fig. 5a is a schematic structural diagram of the front shell 611 in the speaker module 60 shown in fig. 4, fig. 5b is an exploded view of the front shell 611 shown in fig. 5a, and fig. 5c is a schematic structural diagram of the front shell 611 shown in fig. 5a when viewed from the bottom to the top. The front shell 611 includes a first cover plate 6111 and a first side frame 6112, the first side frame 6112 is disposed 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 toward a direction away from the first cover plate 6111. Referring to fig. 5c, one end of the first side frame 6112 away from the first cover plate 6111 is provided with a first step surface 6112a, and the first step surface 6112a is disposed around a circumference of the first side frame 6112. The front shell 611 is fixed to the rear shell 612 in fig. 4 by a first step surface 6112 a.

In some embodiments, referring to fig. 5a, 5b and 5c, the first cover plate 6111 includes a cover plate main body 6111a and a reinforcing plate 6111c, the cover plate main body 6111a is provided with an assembling opening 6111b, and the reinforcing plate 6111c is disposed at the assembling opening 6111b and blocks the assembling opening 6111 b. The cover plate main body 6111a may be a plastic part, and the reinforcing plate 6111c may be a metal part. Illustratively, the reinforcement plate 6111c is a stainless steel piece. The reinforcing plate 6111c and the cover plate main body 6111a may be an integral structure, that is, the reinforcing plate 6111c and the cover plate main body 6111a are formed into a whole, for example, the cover plate main body 6111a may be molded on the reinforcing plate 6111c by using an injection molding process. Or the reinforcing plate 6111c may be provided to the fitting opening 6111b by bonding, clipping, screwing, or the like. Therefore, by providing the reinforcing plate 6111c, the overall structural strength of the front shell 611 can be improved on the basis of not increasing the thickness of the front shell 611, and meanwhile, by providing the reinforcing plate 6111c, the first cover plate 6111 can be effectively prevented from generating resonance, which is beneficial to improving the sound quality of the speaker module 60.

In other embodiments, the first cover plate 6111 may not have the mounting opening 6111 b. The first cover plate 6111 in this example may be a plastic or metal piece.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a rear housing 612 in the speaker module 60 shown in fig. 4. The rear shell 612 includes a flat plate portion 6121 and a second side frame 6122, the second side frame 6122 is disposed on an inner surface of the flat plate portion 6121, and the second side frame 6122 is fixed on the first step surface 6112a of the front shell 611. A receiving space is defined between the rear shell 612 and the front shell 611. Therefore, the front shell 611 and the rear shell 612 are assembled, the structure is simple, and the forming difficulty and the assembling difficulty of the shell 61 are reduced. Here, the "inner surface of the flat plate portion 6121" refers to a side surface of the flat plate portion 6121 facing the inner space of the housing 61. The inner core 62 is disposed in the accommodating space and divides the accommodating space into a front cavity 601 and a rear cavity 602.

Specifically, inner core 62 is disposed within front shell 611. Referring to fig. 7, fig. 7 is a schematic structural diagram of the core 62 of the speaker module 60 shown in fig. 4. The inner core 62 has a fixing surface 62a, and the fixing surface 62a is formed by an outer edge portion of the diaphragm 6222. The inner core 62 is fixed to the front shell 611 by the fixing surface 62 a. Referring to fig. 8, fig. 8 is an enlarged view of a portion a of fig. 5 c. The front shell 611 has a second stepped surface 6112b therein, and the shape and size of the second stepped surface 6112b are adapted to the shape and size of the fixing surface 62 a. Specifically, the second step 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 a side surface of the first side frame 6112 facing the inner space of the housing 61.

Referring to fig. 9, fig. 9 is an assembly diagram of the core 62 and the shell 61 of the speaker module 60 shown in fig. 4. Specifically, the core 62 is disposed in the front shell 611, the core 62 is stacked with the first cover plate 6111 of the housing 61, a front cavity 601 is defined between the core 62 and a portion of the first side frame 6112 and the first cover plate 6111, and a rear cavity 602 is defined between the rear shell 612 and a portion of the first side frame 6112. The first side frame 6112 is provided with a sound outlet channel 60a, and the sound outlet channel 60a is communicated with the front cavity 601. The airflow formed by the front cavity 601 of the speaker module 60 can be guided out of the sound outlet channel 60a to form sound. The sound outlet passage 60a communicates with the sound outlet hole 22a on the bezel 22 of the electronic device 100 shown in fig. 1.

The fixing surface 62a of the inner core 62 is fixed to the second stepped surface 6112 b. Thereby disposing the inner core 62 within the front shell 611 and achieving fixation of the inner core 62 to the front shell 611.

On this basis, referring to fig. 8 and 9, optionally, a limiting rib 6112c is disposed on the inner surface of the first side frame 6112 around the second step surface 6112 b. The plurality of limiting ribs 6112c are arranged in the circumferential direction of the first side frame 6112 at intervals. In the present application, "a plurality" means two or more. In other embodiments, the stop rib 6112c may be formed in a ring shape. When the inner core 62 is disposed in the front shell 611, the stopper rib 6112c is disposed around the circumference of the inner core 62. The limiting rib 6112c can limit the inner core 62, prevent the inner core 62 from being dislocated in the XY plane, and improve the alignment accuracy of the fixing surface 62a and the second stepped surface 6112 b. In addition, the inner core 62 can be fixed to the second stepped surface 6112b, and can also be fixed to the limit rib 6112c by the side surface thereof, so that the contact area between the inner core 62 and the front shell 611 can be increased, and the connection stability between the inner core 62 and the front shell 611 is ensured.

Referring to fig. 10 and 11, fig. 10 is a perspective view of an inner core 62 according to some embodiments of the present application, and fig. 11 is an exploded view of the inner core 62 shown in fig. 10. The inner core 62 includes a frame 621, a vibration system and a magnetic circuit system 623.

It should be noted that fig. 10 and 11 only schematically show some components included in the inner core 62, and the actual shape, the actual size, the actual position, and the actual configuration of these components are not limited to those in fig. 10 and 11. The coordinate system in fig. 10 is represented by the same coordinate system as the coordinate system in fig. 3. That is, the orientation relationship of the components in the kernel 62 in fig. 11 in the coordinate system shown in fig. 11 is the same as the orientation relationship of the components in the kernel 62 in the coordinate system shown in fig. 3 when the kernel 62 is applied to the speaker module 60 shown in fig. 3.

It is to be understood that "top" used in the following description of various components of the core 62 refers to a location of the described component proximate to the front cavity 601 when the core 62 is applied within the speaker module 60, "bottom" refers to a location of the described component distal from the front cavity 601 when the core 62 is applied within the speaker module 60, "inner" refers to a location of the described component proximate to the central axis of the core 62, "outer" refers to a location of the described component distal from the central axis of the core 62, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting to the present application. In addition, the shapes of the components of the inner core 62 described below are "rectangular" and "square" each indicating a general shape, and rounded corners may or may not be provided between adjacent two sides. In the following description, the terms "parallel", "perpendicular", "aligned", "the same direction", "opposite directions" used for the respective components of the core 62 indicate the approximate orientations that allow a certain error.

The basin stand 621 serves as a "support skeleton" for the core 62, supporting the vibration system and securing the magnetic circuit system 623. The material of the basin stand 621 includes, but is not limited to, metal and plastic.

Referring to FIG. 12, FIG. 12 is a perspective view of the basin stand 621 of the inner core 62 shown in FIG. 11. The basin stand 621 is a rectangular frame. Specifically, the frame 621 includes first and second opposite

short side portions

621a and 621b, and first and second opposite

long side portions

621c and 621 d. The first and second

long side portions

621c and 621d extend in a direction parallel to the X axis, and the first and second

short side portions

621a and 621b extend in a direction parallel to the Y axis. The lengths of the first and second

long side portions

621c and 621d are greater than the lengths of the first and second

short side portions

621a and 621 b. The frame 621 is formed by sequentially connecting and enclosing a first short side portion 621a, a first long side portion 621c, a second short side portion 621b, and a second long side portion 621 d.

The frame 621 may be a structural member or may be formed by assembling a plurality of parts by bonding, clipping, screwing, etc. It is understood that the frame 621 is used for supporting the vibration system and fixing the magnetic circuit system 623, and the frame 621 may have other design shapes in case of satisfying the requirement, and is not limited to the embodiment.

Referring back to fig. 11, the vibration system includes a diaphragm set 622, a voice coil set 624, and an electrical connection structure 625. The diaphragm set 622 is a main body for pushing air in the front cavity 601 of the speaker module 60 to move. When the core 62 shown in fig. 11 is applied to the speaker module 60 shown in fig. 3-4, the core 62 separates the rear chamber 602 and the front chamber 601 of the speaker module 60 by the diaphragm group 622. That is, the diaphragm group 622 divides the housing 61 into a front chamber 601 and a rear chamber 602. The diaphragm group 622 is opposite to the first cover plate 6111. That is, the projection of the first cover plate 6111 on the diaphragm group 622 along the central axis of the diaphragm group 622 overlaps with the diaphragm group 622. The front cavity 601 is defined between the diaphragm group 622 and the first cover plate 6111 of the housing 61.

Referring to fig. 13, 14 and 15, fig. 13 is a schematic structural diagram of a diaphragm group 622 in the core 62 shown in fig. 11. Fig. 14 is a perspective sectional view of the diaphragm group 622 shown in fig. 13 at a line a-a, and fig. 15 is an enlarged view of a region B in the perspective sectional view shown in fig. 14. It should be noted that "at line a-a" means at the plane where the arrows at the two ends of line a-a and line a-a are located, and the description of the similar drawings shall be understood in the following, and will not be repeated herein.

Referring to fig. 13, the diaphragm group 622 includes a dome 6221 and a diaphragm 6222. The dome 6221 has a rectangular plate shape. The length direction of the dome 6221 is parallel to the X-axis, the width direction of the dome 6221 is parallel to the Y-axis, and the thickness direction of the dome 6221 is parallel to the Z-axis. Referring to fig. 14 and 15, the dome 6221 includes a first top surface 6221a and a first bottom surface 6222b disposed opposite to each other. The edge region of the first bottom surface 6222b is provided with a stopper groove 6221 c. In other embodiments, the retention groove 6221c of the dome 6221 can also be disposed in an edge region of the first top surface 6221a of the dome 6221.

Referring to fig. 13, the diaphragm 6222 has a rectangular ring shape. The direction of extension of the long side of the diaphragm 6222 is parallel to the X axis, and the direction of extension of the short side of the diaphragm 6222 is parallel to the Y axis. The diaphragm 6222 includes a first fixing portion 6222a, a hinge 6222b, and a second fixing portion 6222c connected in sequence. The first fixing portion 6222a is located inside the hinge ring 6222b, and the second fixing portion 6222c is located outside the hinge ring 6222 b.

Referring to fig. 14 and 15, the first fixing portion 6222a is partially received in the limiting groove 6221c of the ball top 6221 and is fixed to the ball top 6221. On this basis, the first fixing portion 6222a of the diaphragm 6222 has a second top face 6222a1 and a second bottom face 6222a 2. The second top surface 6222a1 of the first fixing portion 6222a contacts the bottom wall of the stopper groove 6221c, and the second bottom surface 6222a2 of the first fixing portion 6222a is flush with the first bottom surface 6222b of the dome 6221. The surface formed by the second bottom surface 6222a2 of the first fixing portion 6222a and the first bottom surface 6222b of the ball-top 6221 being spliced together is used for fixing the voice coil group 624, thereby facilitating the fixing of the voice coil group 624.

Referring to fig. 14, the second fastening portion 6222c has a third top surface 6222c1 and a third bottom surface 6222c2 opposite to each other. The third top face 6222c1 of the second fixing portion 6222c forms the fixing face 62a of the inner core 62 shown in fig. 7. When the core 62 is mounted in the speaker module 60, the diaphragm group 622 is fixed to the inner surface of the front shell 611 of the speaker module 60 by the third top surface 6222c1 of the second fixing portion 6222 c. The third bottom surface 6222c2 of the second fixing portion 6222c is used for fixing with the top surface of the frame 621 shown in FIG. 12.

The cross-sectional shape of the flexure 6222b of the diaphragm 6222 is an arc or an approximate arc, and the extension track of the flexure 6222b is a rounded rectangle. The direction in which the longer sides of the extended locus of the knuckle 6222b extend is parallel to the X axis, and the direction in which the shorter sides of the extended locus of the knuckle 6222b extend is parallel to the Y axis. The folding ring 6222b of the diaphragm 6222 is convexly disposed, that is, the folding ring 6222b protrudes toward a side away from the voice coil group 624. The bellows 6222b of the diaphragm 6222 can be deformed by an external force, so that the dome 6221 can vibrate up and down in the Z-axis direction with respect to the second fixing portion 6222 c.

In this embodiment, since the corrugated rim 6222b of the diaphragm 6222 is arranged in a convex manner, the space below the diaphragm 6222 is released, and the magnetic circuit system 623 located below the diaphragm 6222 is allowed to have a larger height dimension, so that the magnetic induction intensity of the core 62 is increased, and the sensitivity of the core 62 is improved.

It is understood that in other embodiments, the hinge 6222b of the diaphragm 6222 may be recessed, that is, the hinge 6222b is recessed toward the side facing the voice coil group 624. In this way, the inner core 62 can save its upper space, thereby saving the front cavity 601 space.

Referring to fig. 16 and 17, fig. 16 is an assembly view of the diaphragm assembly 622 shown in fig. 13 and the basin stand 621 shown in fig. 12, and fig. 17 is a perspective sectional view of the assembly view shown in fig. 16 at the line B-B. In the diaphragm group 622, the third bottom surface 6222c2 of the second fixing portion 6222c of the diaphragm 6222 faces the frame 621 and is fixed to the top surface of the frame 621.

Referring to fig. 18, fig. 18 is a schematic structural diagram of the voice coil group 624 in the core 62 shown in fig. 11. The voice coil assembly 624 is used for cooperating with the magnetic circuit system 623 to synchronously drive the diaphragm assembly 622 to vibrate, so as to push the air in the front cavity 601 of the speaker module 60 to move to generate sound.

Referring to fig. 18 and 19 together, fig. 19 is an exploded view of the voice coil assembly 624 of fig. 18. In the present embodiment, the voice coil group 624 includes a voice coil 6241 and a voice coil bobbin 6242. The voice coil 6241 has a top face 6241a and a bottom face 6241b opposite to each other, the top face 6241a is used for connecting with the diaphragm set 622, and the bottom face 6241b of the voice coil 6241 is located at an end portion for extending into the magnetic circuit system 623 so as to be matched with the magnetic circuit system 623. A voice coil top face 6241a of the voice coil 6241 is connected to the diaphragm group 622 via a voice coil bobbin 6242. One end of the voice coil bobbin 6242 in the Z-axis direction is connected to the diaphragm group 622, and the other end of the voice coil bobbin 6242 in the Z-axis direction is connected to the voice coil 6241. The voice coil bobbin 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 protrude into the magnetic circuit system 623 while ensuring the vibration space of the diaphragm group 622. On the basis, the voice coil bobbin 6242 may be made of a material with low density and high structural strength, such as aluminum alloy, magnesium aluminum alloy, etc., so as to reduce the load of the magnetic circuit system 623. Meanwhile, the voice coil bobbin 6242 may perform a heat dissipation function on the voice coil 6241, thereby reducing the risk of damage to the diaphragm group 622 due to overheating of the voice coil 6241.

Referring to fig. 18 and 19, in some embodiments, the voice coil bobbin 6242 includes a first support portion 6242a, a first connection portion 6242b, and a second connection portion 6242 c. The first support portion 6242a includes a first support body 6242a1, the first support body 6242a1 having first and second ends opposite in the Z-axis direction, the first end of the first support body 6242a1 being provided with a first outwardly extending extension 6242a2, the second end of the first support body 6242a1 being provided with a second inwardly extending extension 6242a 3. The first support portion 6242a has a substantially Z-shaped cross-sectional shape. The top surface of the first extending portion 6242a2 is connected to the first bottom surface 6222b of the dome 6221, and the bottom surface of the second extending portion 6242a3 is fixed to the voice coil top surface 6241a of the voice coil 6241. Specifically, the first extending portion 6242a2 and the dome 6221 may be adhesively connected, and the second extending portion 6242a3 and the voice coil 6241 may be adhesively connected. Therefore, by providing the first extending portion 6242a2 and the second extending portion 6242a3, the contact area between the voice coil bobbin 6242 and the diaphragm set 622 and the contact area between the voice coil 6241 and the voice coil bobbin 6242 can be increased, so that the connection reliability between the voice coil bobbin 6242 and the diaphragm set 622 and between the voice coil bobbin 6242 and the voice coil 6241 can be improved, the split vibration can be avoided, and the improvement of the sound quality of the speaker module 60 is facilitated.

In other embodiments, the cross-sectional shape of the first supporting portion 6242a can also be a vertical "one", L ", inverted L, T, inverted T", half transverse "shape, etc. The cross-sectional shape of the first support portion 6242a is not strictly limited in the present application.

Referring to fig. 18, the first support body 6242a1 is provided with a through hole 6242a4 extending therethrough in the thickness direction thereof, and the through hole 6242a4 extends to the second end of the first support body 6242a 1. Positive and negative leads (not shown) of the voice coil 6241 may be passed out of the first support body 6242a1 from the through holes 6242a4, so that the positive and negative leads of the voice coil 6241 may be electrically connected to the electrical connection structure 625 conveniently. As shown in fig. 19, the first connecting portion 6242b and the second connecting portion 6242c are respectively disposed at two ends of the first supporting portion 6242a in the length direction, that is, the first connecting portion 6242b and the second connecting portion 6242c are respectively disposed at two ends of the first supporting portion 6242a in the X-axis direction.

The first connecting portion 6242b includes a second support body 6242b1 and a third extending portion 6242b2, and the second support body 6242b1 is formed in a flat plate shape. One end of the second support body 6242b1X in the axial direction is connected to the first extending portion 6242a2, and the top surface of the second support body 6242b1 is coplanar with the top surface of the first extending portion 6242a 2.

Referring to fig. 19, the second connecting portions 6242c and the first connecting portions 6242b are symmetrically disposed at both sides of the first supporting portion 6242 a. The second connecting portion 6242c includes a third support body 6242c1 and a fourth extending portion 6242c2, the third support body 6242c1 being connected with the first extending portion 6242a2, the top surface of the third support body 6242c1 being coplanar with the top surface of the first extending portion 6242a 2. Therefore, the top surface of the second support body 6242b1 and the top surface of the third support body 6242c1 can be connected with the diaphragm group 622, the contact area between the voice coil bobbin 6242 and the diaphragm group 622 is further increased, the connection reliability between the voice coil bobbin 6242 and the diaphragm group 622 is improved, meanwhile, the moving stability of the diaphragm group 622 is improved, the division vibration is avoided, and the improvement of the tone quality of the kernel 62 is facilitated.

Referring to fig. 19, one end of the third extending portion 6242b2 is connected to one end of the second supporting body 6242b1 away from the first supporting body 6242a1, and the other end of the third extending portion 6242b2 extends toward a direction away from the diaphragm group 622. Similarly, one end of the fourth extending portion 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 extending portion 6242c2 extends toward the direction away from the diaphragm group 622.

The voice coil bobbin 6242 may be a unitary structure or may be formed by assembling a plurality of portions, which is not particularly limited in this application.

In other embodiments, the voice coil bobbin 6242 may not be disposed on the inner core 62, and the voice coil 6241 may be directly fixed to the diaphragm group 622. In this way, the number of parts of the core 62 can be reduced to simplify the structure of the core 62.

Referring to fig. 20, fig. 20 is an assembly view of the voice coil assembly 624 shown in fig. 18-19, the diaphragm assembly 622 shown in fig. 13, and the basin stand 621 shown in fig. 12. The voice coil group 624 is positioned within the tub 621, and the first connection portion 6242b is disposed near the first short side portion 621a of the tub 621, and the second connection portion 6242c is disposed near the second short side portion 621b of the tub 621.

It is understood that in other embodiments, the voice coil 6241 may be formed as a planar voice coil, and in this embodiment, the voice coil 6241 may be bonded to the ball top 6221. The planar voice coil can be manufactured by winding or printing a circuit. The small thickness of the planar voice coil is beneficial to reducing the thickness of the inner core 62.

Referring to fig. 21, fig. 21 is a schematic structural diagram of an electrical connection structure 625 of the core 62 shown in fig. 11. The electrical connection structure 625 includes a first electrical connection unit 625a and a second electrical connection unit 625 b. Specifically, the second electrical connection unit 625b may have the same structure as the first electrical connection unit 625a and be symmetrically disposed. The first electrical connection unit 625a is connected between the first short side 621a of the bowl 621 and the third extension part 6242b2 of the voice coil bobbin 6242, and the second electrical connection unit 625b is connected between the second short side 621b of the bowl 621 and the fourth extension part 6242c2 of the voice coil bobbin 6242.

Specifically, referring to fig. 22, one end of the first short side 621a away from the dome 6221 and one end of the third extending portion 6242b2 away from the second support body 6242b1 are adhesively connected to the first electrical connection unit 625 a. One end of the second short side 621b away from the dome 6221 and one end of the fourth extending portion 6242c2 away from the third support body 6242c1 are adhesively connected to the second electrical connection unit 625 b.

To avoid the first electrical connection unit 625a from obstructing the movement of the voice coil set 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, FPCs and structures formed by a plurality of wires connected through a flexible structure.

On the basis of the above embodiment, a connection terminal 625c may be provided on one of the first and second

electrical connection units

625a and 625 b. For example, referring to fig. 21 and 22, the first electrical connection unit 625a is provided with the connection terminal 625c, and the positive and negative leads (not shown) of the voice coil 6241 may be electrically connected to the first electrical connection unit 625a through the connection terminal 625 c. 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 second connection structure 6252c is connected to the other end of the second connection structure 6252 c. The connection terminal 625c is formed substantially in an inverted L shape.

In addition, referring to fig. 22, a clip interface 6242d is disposed on the third extending portion 6242b2 of the voice coil bobbin 6242, and the second connecting structure 6252c can extend into the voice coil bobbin 6242 from the clip interface 6242 d. Therefore, the positive and negative leads of the voice coil 6241 are conveniently connected with the connection terminals 625c, and meanwhile, the connection terminals 625c are matched with the clamping interfaces 6242d, so that the connection reliability between the first electric connection unit 625a and the voice coil framework 6242 can be improved, and the position of the first electric connection unit 625a is more stable.

Referring back to FIG. 11, the magnetic circuit system 623 is fixed to the basin stand 621, and the magnetic circuit system 623 is located in the back cavity 602. The magnetic circuit system 623 is used for cooperating with the voice coil group 624 to drive the diaphragm group 622 to synchronously vibrate. Referring to fig. 23 and 24, fig. 23 is a schematic structural diagram of the magnetic circuit system 623 in the core 62 shown in fig. 11, and fig. 24 is an exploded view of the magnetic circuit system 623 shown in fig. 23. The magnetic circuit system 623 includes a center magnet 6231 and a side magnet 6232.

Referring to fig. 24, the side magnets 6232 are arranged around the circumference of the central magnet 6231, with a magnetic gap 623a defined between the central magnet 6231 and the side magnets 6232. Referring to fig. 25, fig. 25 is a cross-sectional view taken along line C-C of fig. 10. A portion of the voice coil 6241 remote from the diaphragm group 622 extends into the magnetic gap 623 a. It is understood that, in other embodiments, when the voice coil 6241 is a planar voice coil, the voice coil 6241 may not extend into the magnetic gap 623 a.

The central magnet 6231 may be a magnet or magnetic steel. Similarly, the edge magnets 6232 may be magnets or magnetic steel. The center magnet 6231 has a magnetizing direction (a direction from the south pole to the north pole, i.e., a direction from the S pole to the N pole) opposite to that of the side magnets 6232. For example, referring to fig. 25, one end of the central magnet 6231 close to the diaphragm group 622 is an N pole, one end of the side magnet 6232 far from the diaphragm group 622 is an S pole, and one end of the side magnet 6232 close to the diaphragm group 622 is an N pole. In this way, a magnetic circuit can be formed between the center magnet 6231 and the side magnet 6232. When the voice coil 6241 is energized, the voice coil 6241 drives the diaphragm group 622 to vibrate by the magnetic field in the magnetic gap 623 a.

Referring to fig. 24, the central magnet 6231 is formed in a rectangular plate-like structure. The longitudinal 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.

The number of the side magnets 6232 may be one or more. When the number of the side magnets 6232 is plural, the plural side magnets 6232 are uniformly arranged around the circumference of the center magnet 6231. Illustratively, referring to FIG. 24, the number of edge 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 6232 d. The first side magnet 6232a and the second side magnet 6232b are respectively positioned at opposite sides of the central magnet 6231 in the length direction, and the third side magnet 6232c and the fourth side magnet 6232d are respectively positioned at opposite sides of the central magnet 6231 in the width direction. The first side magnet 6232a and the second side magnet 6232b may be formed in an "H" shape, and the third side magnet 6232c and the fourth side magnet 6232d may be formed in a long bar shape.

In other embodiments, the side magnet 6232 may be formed as a ring magnet disposed around a circumference of the central magnet 6231, and is not particularly limited herein.

In addition to the above embodiments, in order to increase the magnetic flux strength, in some embodiments, referring to fig. 23-25, the magnetic circuit system 623 further includes a center magnetic yoke 6233 and an edge magnetic yoke 6234. The central and

edge yokes

6233 and 6234 serve to restrain the outward diffusion of the leakage flux of the induction coil. The material of the yoke can be a yoke made of silicon steel sheets in a stacking mode. The center magnetic conductive yoke 6233 is formed in a rectangular flat plate-like structure, and the edge magnetic conductive yoke 6234 is formed in a ring-shaped flat plate-like structure. The center yoke 6233 is disposed on the surface of the center magnet 6231 close to the diaphragm group 622 by means of gluing, clamping, screwing, etc., and the edge yoke 6234 is disposed on the surface of the edge magnet 6232 close to the diaphragm group 622 by means of gluing, clamping, screwing, etc. Thus, the magnetic flux lines are restricted by the center yoke 6233 and the edge yoke 6234, so that the magnetic flux intensity in the magnetic gap 623a can be increased, and the drive intensity of the diaphragm group 622 can be improved.

It is understood that in other embodiments, the magnetic circuit system 623 may not include the center yoke 6233, the edge yoke 6234, and the edge yoke 6234.

Further, the inner core 62 includes a lower magnetic conductive yoke 6235, and the lower magnetic conductive yoke 6235 is disposed on a side surface of the central magnet 6231 and the side magnet 6232 away from the diaphragm group 622. The center magnet 6231 and the side magnets 6232 may be fixed to the lower magnetic yoke 6235 by means of gluing, snapping, screwing, or the like.

The lower magnetic yoke 6235 may be made of silicon steel sheets stacked together to form a yoke. The lower magnetic yoke 6235 can restrain magnetic lines of force of the central magnet 6231 and the side magnet 6232, so that the magnetic flux strength in the magnetic gap 623a between the central magnet 6231 and the side magnet 6232 can be further increased, and the driving strength of the diaphragm set 622 can be improved. Meanwhile, the lower magnetic yoke 6235 can be used for fixing the relative positions of the central magnet 6231 and the side magnets 6232 in the magnetic circuit system 623, so that all parts of the magnetic circuit system 623 can be integrated into a whole by arranging the lower magnetic yoke 6235, and the magnetic circuit system 623 can be integrally assembled, thereby being beneficial to reducing the assembly difficulty and improving the assembly efficiency.

Referring to FIG. 26, FIG. 26 is an assembly view of the magnetic circuit system 623 of FIG. 23 and the basin stand 621 of FIG. 12. The side surface of the edge magnetic yoke 6234 remote from the edge magnet 6232 is attached to the bottom surfaces of the first and second

long side portions

621c and 621d of the bowl frame 621. Specifically, a first notch 6211c is provided on the bottom surface of the first long side portion 621c, a second notch 6211d is provided on the bottom surface of the second long side portion 621d, and the edge magnetic yoke 6234 is connected to the first notch 6211c and the second notch 6211 d.

In the above embodiment, the magnetic circuit system 623 has a simple structure and is convenient to process. However, since the magnetic lines of force of the central magnet 6231 and the side magnets 6232 diverge, the magnetic flux density in the magnetic gap 623a is low, the sensitivity of the speaker module 60 is reduced, and the acoustic performance of the speaker module 60 is poor.

Referring to fig. 27, 28 and 29a, in order to increase the density of the magnetic flux in the magnetic gap 623a, fig. 27 is a perspective view of a speaker module 60 according to another embodiment of the present application, fig. 28 is a top view of the speaker module 60 in fig. 27, and fig. 29a is a cross-sectional view taken along line D-D in fig. 28.

Referring to fig. 27, 28 and 29a, in addition to the housing 61, the diaphragm set 622, the voice coil 6241 and the magnetic circuit system 623 in the speaker module 60 shown in fig. 3, the speaker module 60 in this embodiment further includes a first auxiliary magnet 6238, and the first auxiliary magnet 6238 is located on a side of the diaphragm set 622 away from the magnetic circuit system 623. Wherein the first auxiliary magnet 6238 is spaced apart from the diaphragm group 622 to avoid the first auxiliary magnet 6238 from interfering with the movement of the diaphragm group 622. The first auxiliary magnet 6238 may be located inside the housing 61 or may be located outside the housing 61.

The projection of the first auxiliary magnet 6238 on the diaphragm set 622 along the central axis O of the diaphragm set 622 is a first projection S1, and the projection of the central magnet 6231 on the diaphragm set 622 along the central axis 0 of the diaphragm set 622 is a second projection S2. The central axis 0 of the diaphragm set 622 passes through the center of the diaphragm set 622 and is perpendicular to a straight line of a plane where the spherical top 6221 of the diaphragm set 622 is located, and the first projection S1 is an orthogonal projection of the first auxiliary magnet 6238 on the plane where the spherical top 6221 is located. The second projection S2 is an orthographic projection of the central magnet 6238 on the plane of the dome 6221. For example, referring to fig. 29b, fig. 29b is a schematic projection diagram of the first auxiliary magnet 6238 on the diaphragm group 622 along the central axis O of the diaphragm group 622. The projection line n of each point on the first auxiliary magnet 6238 is parallel to the central axis O of the diaphragm set 622. The projection process of the second projection S2, and the third projection S3 and the fourth projection S4 are similar to the first projection S1, and are not repeated herein.

Specifically, the first projection S1 overlaps the second projection S2. The first projection S1 partially or fully overlaps the second projection S2. When the first projection S1 and the second projection S2 partially overlap, the following three situations are included:

the first case is: referring to fig. 29c, the first projection S1 and the second projection S2 intersect, where a portion of the first projection S1 coincides with a portion of the second projection S2, and another portion of the first projection S1 does not coincide with another portion of the second projection S2.

The second case is: referring to fig. 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 included in the second projection S2, and the area of the second projection S2 is larger than the area of the first projection S1.

The third case is: referring to fig. 29e, the 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 included in the first projection S1, and the area of the second projection S2 is smaller than the area of the first projection S1.

Referring to fig. 29f, when the first projection S1 and the second projection S2 completely overlap, the outer contours of the first projection S1 and the second projection S2 completely overlap, and the area of the first projection S1 is equal to the area of the second projection S2. It should be noted that, in the present application, "the first projection S1 and the second projection S2 completely overlap" should be understood in a broad sense, that is, complete overlap in a strict sense is not required, and due to process errors, when the area of the first projection S1 is slightly larger or smaller than the area of the second projection S2, the first projection S1 and the second projection S2 may also be considered to be completely overlapped.

The first auxiliary magnet 6238 may be a magnet or a magnetic steel. The magnetic pole of the end of the first auxiliary magnet 6238 that is closer to the central magnet 6231 is the same as the magnetic pole of the end of the central magnet 6231 that is closer to the first auxiliary magnet 6238, and the magnetic pole of the end of the first auxiliary magnet 6238 that is farther from the central magnet 6231 is opposite to the magnetic pole of the end of the central magnet 6231 that is closer to the first auxiliary magnet 6238.

For example, referring to fig. 29a, an end of the central magnet 6231 close to the first auxiliary magnet 6238 is N-pole, an end far away from the first auxiliary magnet 6238 is S-pole, an end of the first auxiliary magnet 6238 close to the central magnet 6231 is N-pole, and an end far away from the central magnet 6231 is S-pole.

Referring to fig. 30 and fig. 31, fig. 30 is a schematic diagram of magnetic line emission of the speaker module 60 shown in fig. 3, and fig. 31 is a schematic diagram of magnetic line emission of the speaker module 60 shown in fig. 27. As can be seen from fig. 30, there is divergence of the magnetic lines of force in the magnetic circuit 623. As can be seen from fig. 31, after the first auxiliary magnet 6238 is added, the magnetic lines of force of the first auxiliary magnet 6238 and the magnetic lines of force of the central magnet 6231 are mutually suppressed, so as to effectively suppress outward divergence of the magnetic lines of force of the central magnet 6231, thereby effectively increasing the magnetic flux density in the magnetic gap 623a, increasing the magnetic field strength in the magnetic gap 623a, further improving the sensitivity of the speaker module 60, and improving the acoustic performance of the speaker module 60. Meanwhile, the first auxiliary magnet 6238 is located on the side of the diaphragm group 622 away from the magnetic circuit system 623, so that the magnetic flux density in the magnetic gap 623a is increased, the overall volume of the magnetic circuit system 623 is not increased, the loudspeaker module 60 can be miniaturized, and in the production process, the original structures of the magnetic circuit system 623 and the inner core 62 of the loudspeaker module 60 do not need to be changed, so that the production cost is effectively reduced.

As a result of comparing the magnetic field strengths in the magnetic gaps 623a before and after the first auxiliary magnet 6238 is provided by simulation, it is shown that the magnetic field strength in the magnetic gap 623a is improved by 10% after the first auxiliary magnet 6238 is added, compared to that when the first auxiliary magnet 6238 is not provided.

Referring to fig. 32 and 33, fig. 32 is a graph showing the results of sound loudness testing of the speaker module 60 shown in fig. 3 and the speaker module 60 shown in fig. 28, and fig. 33 is a graph showing the difference between the sound loudness of the speaker module 60 shown in fig. 3 and 28. In fig. 32 and 33, the abscissa is frequency in hertz (Hz), and the ordinate is sound intensity in decibels (dB). In fig. 33, curve a is the sound loudness of the speaker module 60 shown in fig. 3, and curve b is the sound loudness of the speaker module 60 shown in fig. 27. Curve c in fig. 33 is a curve obtained by subtracting curve a from curve b.

As can be seen from fig. 33, when the first auxiliary magnet 6238 is provided, the loudness of sound in the low frequency range (less than 800 hz) of the speaker module 60 is improved by about 1 db compared to the loudness of sound in the low frequency range without the first auxiliary magnet 6238, which is effective in improving the loudness of sound in the low frequency range.

Referring back to fig. 29a, in some embodiments, the first auxiliary magnet 6238 is disposed on the first cover plate 6111. Here, the first auxiliary magnet 6238 may be disposed on the inner surface of the first cover plate 6111, and may also be disposed on the outer surface of the first cover plate 6111.

For example, referring to fig. 29a, the first auxiliary magnet 6238 may be disposed on the outer surface of the reinforcement plate 6111c of the first cover plate 6111. The first auxiliary magnet 6238 may be provided on the outer surface of the reinforcing plate 6111c by gluing, clipping, or the like. Therefore, the first auxiliary magnet 6238 can be conveniently fixed, and the first auxiliary magnet 6238 can be prevented from occupying the space of the front cavity 601, so that the space of the front cavity 601 can be saved, and the improvement of the sensitivity of the speaker module 60 is facilitated.

In other embodiments, the first auxiliary magnet 6238 may also be provided on the bezel 30 or the housing of the electronic device 100. In this way, the first auxiliary magnet 6238 may be disposed in a space inside the electronic device 100, which is advantageous for achieving a slim design of the electronic device 100.

It is understood that in other embodiments, referring to fig. 29g, the first auxiliary magnet 6238 may also be disposed on the inner surface of the reinforcement plate 6111 c. In this way, the fixation of the first auxiliary magnet 6238 can be also easily achieved, so that the position of the first auxiliary magnet 6238 is stabilized, and the dimension of the speaker module 60 in the Z-axis direction can be reduced. In addition, the first auxiliary magnet 6238 disposed on the inner surface of the reinforcing plate 6111c can limit the vibration stroke of the diaphragm set 622, so as to prevent the voice coil 6241 from slipping out of the magnetic gap 623 a.

In order to reduce the overall volume of the speaker module 60 based on the above embodiments, so as to save the overall occupied space of the speaker module 60, in some embodiments, please refer to fig. 34 and 35, fig. 34 is a perspective view of the speaker module 60 according to still other embodiments of the present application, and fig. 35 is a cross-sectional view of the speaker module 60 shown in fig. 34. In this embodiment, a concave groove 6111d is formed on the outer surface of the first cover plate 6111, and the concave groove 6111d is recessed toward the direction close to the diaphragm group 622, and the first auxiliary magnet 6238 is disposed in the concave groove 6111 d.

In some embodiments, referring to fig. 34 and 35, a portion of the first cover plate 6111 is recessed inward to form a groove 6111d, and the first auxiliary magnet 6238 is disposed in the groove 6111 d. Specifically, the first auxiliary magnet 6238 may be adhered to the bottom wall of the groove 6111 d. Here, the "bottom wall of the groove 6111 d" refers to a side wall surface opposite to the opening of the groove 6111 d. Like this, can reduce speaker module 60 size in the Z axle direction, reduce speaker module 60's whole volume, and simple structure, processing is convenient. In addition, since a portion of the first cover plate 6111 is recessed inward, the portion of the first cover plate 6111 recessed inward can limit the vibration stroke of the diaphragm set 622, and the voice coil 6241 is prevented from slipping out of the magnetic gap 623 a.

For example, referring to fig. 34 and 35, the groove 6111d is formed by a portion of the reinforcing plate 6111c being recessed inward to form the groove 6111 d.

Further, referring to fig. 36, fig. 36 is a cross-sectional view of a speaker module 60 according to some embodiments of the present disclosure. The difference between the present embodiment and the speaker module 60 shown in fig. 34 lies in that a hollowed-out portion 6111e is disposed on the bottom wall of the groove 6111d in the present embodiment, and an orthographic projection of the first auxiliary magnet 6238 on the bottom wall of the groove 6111d covers the hollowed-out portion 6111 e. In this way, at least a part of the surface of the first auxiliary magnet 6238 can be exposed from the hollow 6111e, which is beneficial to increase the suppression effect of the first auxiliary magnet 6238 on the magnetic lines of force of the central magnet 6231, so that the magnetic field strength in the magnetic gap 623a can be further increased.

In still other embodiments, referring to fig. 37, fig. 37 is a cross-sectional view of a speaker module 60 according to still other embodiments of the present application, a mounting hole 6111f is formed on the first cover plate 6111, and the first auxiliary magnet 6238 is disposed in the mounting hole 6111 f. The mounting hole 6111f is formed as a through hole penetrating the inner and outer surfaces of the first cover plate 6111. The peripheral wall of the first auxiliary magnet 6238 is connected to the inner edge of the mounting hole 6111 f. Thus, the first auxiliary magnet 6238 can be conveniently fixed, and the first cover plate 6111 can be effectively prevented from generating resonance, which is beneficial to improving the sound quality of the speaker module 60.

In some embodiments, when the first cover plate 6111 includes the reinforcement plate 6111c, the mounting hole 6111f may be formed on the reinforcement plate 6111 c.

With the above embodiment in mind, and with continued reference to FIG. 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 protrudes into the front chamber 601, or the entire first magnet protrudes into the front chamber 601. Therefore, the size of the speaker module 60 in the Z-axis direction can be reduced, and the overall volume of the speaker module 60 can be reduced.

On the basis of the above-described embodiment, the portion of the first auxiliary magnet 6238 located in the mounting hole 6111f is also used to close the mounting hole 6111f to prevent the sound generated by the vibration of the diaphragm group 622 from leaking from the mounting hole 6111 f. Based on this, in order to ensure the blocking effect of the first auxiliary magnet 6238 on the mounting hole 6111f, a sealing connection is made between the inner edge of the mounting hole 6111f and the first auxiliary magnet 6238 to block a gap between the inner edge of the mounting hole 6111f and the first auxiliary magnet 6238.

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 fig. 38, fig. 38 is a sectional view of a speaker module 60 provided by yet other embodiments of the present application. In this embodiment, the speaker module 60 further includes a sealing member 6111g, and the sealing member 6111g is used for sealing a gap between the mounting hole 6111f and the first auxiliary magnet 6238. The seal 6111g may be provided inside the housing 61, or may be provided outside the housing 61.

For example, referring to fig. 38, a sealing member 6111g is disposed in the housing 61, the sealing member 6111g includes a first connecting piece 6111g1, a sealing piece 6111g2, and a second connecting piece 6111g3, and the first connecting piece 6111g1, the sealing piece 6111g2, and the second connecting piece 6111g3 are all formed in a ring shape. The first connecting piece 6111g1 is connected with the inner surface of the first cover plate 6111, the first connecting piece 6111g1 surrounds the periphery of the mounting hole 6111f, the second connecting piece 6111g3 is connected with the end face of one end of the first auxiliary magnet 6238 extending into the mounting hole 6111f, and the sealing piece 6111g2 is connected between the first connecting piece 6111g1 and the second connecting piece 6111g 3. Thus, the gap between the mounting hole 6111f and the first auxiliary magnet 6238 can be effectively sealed by the sealing member 6111g, and the structure is simple and the processing is convenient.

In other embodiments, the sealing member 6111g can also be a sealant (not shown in the figure) filled between the mounting hole 6111f and the first auxiliary magnet 6238. The sealant includes, but is not limited to, one or more of UV glue (also known as shadowless glue), polyurethane, silicone rubber, polysulfide rubber, neoprene, and epoxy sealant. The gap between the inner edge of the mounting hole 6111f and the first auxiliary magnet 6238 can be sealed by the sealant. The structure is simple, the operation is convenient, the sealing device is suitable for sealing gaps with different shapes, the application range is wide, and the flexibility is excellent. The sealant further adheres the first auxiliary magnet 6238 to the first cover plate 6111, so that the connection stability between the first auxiliary magnet 6238 and the first cover plate 6111 can be improved.

In some embodiments, the first auxiliary magnet 6238 is a unitary structure with the first cover plate 6111. That is, the first auxiliary magnet 6238 is formed as one body with the first cover plate 6111. For example, in some embodiments, the first cover plate 6111 is a plastic part, and in such embodiments, the first cover plate 6111 can be molded on the first auxiliary magnet 6238 by an injection molding process. Thus, the sealing property between the first auxiliary magnet 6238 and the mounting hole 6111f can be improved, the sealing member 6111g does not need to be additionally arranged, the assembling steps of the first auxiliary magnet 6238 and the first cover plate 6111 are simplified, and the assembling efficiency is improved.

Further, referring to fig. 39, fig. 39 is a cross-sectional view of a speaker module 60 according to another embodiment of the present application. The speaker module 60 in this embodiment includes a second auxiliary magnet 6239 in addition to the housing 61, the diaphragm group 622, the voice coil 6241, the magnetic circuit system 623, and the first auxiliary magnet 6238 in the speaker module 60 shown in fig. 27, and the second auxiliary magnet 6239 is located on the side of the diaphragm group 622 away from the magnetic circuit system 623. Wherein the second auxiliary magnet 6239 is spaced apart from the diaphragm set 622 to avoid the second auxiliary magnet 6239 from interfering with the movement of the diaphragm set 622. The second auxiliary magnet 6239 may be located inside the case 61 or outside the case 61.

The projection of the second auxiliary magnet 6239 on the diaphragm group 622 along the central axis of the diaphragm group 622 is a third projection S3, and the projection of the side magnet 6232 on the diaphragm group 622 along the central axis of the diaphragm group 622 is a fourth projection. The third projection S3 can be an orthographic projection of the second auxiliary magnet 6239 on the plane of the dome 6221. The fourth projection S4 is an orthographic projection of the edge magnet 6232 on the plane of the dome 6221.

The third projection S3 overlaps the fourth projection S4. The third projection S3 partially or fully overlaps the fourth projection S4. When the first projection S1 and the second projection S2 partially overlap, the following three situations are included:

the first case is: referring to fig. 40a, the third projection S3 and the fourth projection S4 intersect, where a portion of the third projection S3 coincides with a portion of the fourth projection S4, and another portion of the third projection S3 does not coincide with another portion of the fourth projection S4.

The second case is: referring to fig. 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 included in the fourth projection S4, and the area of the fourth projection S4 is greater than the area of the third projection S3.

The third case is: referring to fig. 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 may be included in the third projection S3, and the area of the fourth projection S4 is smaller than the area of the third projection S3.

Referring to fig. 40d, when the third projection S3 and the fourth projection S4 completely overlap, the outer contours of the third projection S3 and the fourth projection S4 completely overlap, and the area of the third projection S3 is equal to the area of the fourth projection S4. It should be noted that, in the present application, "the third projection S3 and the fourth projection S4 completely overlap" should be understood in a broad sense, that is, complete overlap in a strict sense is not required, and due to a process error, when the area of the third projection S3 is slightly larger than or slightly smaller than the area of the fourth projection S4, the third projection S3 and the fourth projection S4 may also be considered to be completely overlapped.

The second auxiliary magnet 6239 may be a magnet or magnetic steel. The magnetic pole of the second auxiliary magnet 6239 at the end close to the side magnet 6232 is the same as the magnetic pole of the side magnet 6232 at the end close to the second auxiliary magnet 6239, and the magnetic pole of the second auxiliary magnet 6239 at the end far from the side magnet 6232 is opposite to the magnetic pole of the side magnet 6232 at the end close to the second auxiliary magnet 6239.

For example, referring back to fig. 39, the end of the side magnet 6232 near the second auxiliary magnet 6239 is S-pole, the end far away from the second auxiliary magnet 6239 is N-pole, the end of the second auxiliary magnet 6239 near the side magnet 6232 is S-pole, and the end far away from the side magnet 6232 is N-pole.

Therefore, the magnetic lines of force of the second auxiliary magnet 6239 and the magnetic lines of force of the side magnet 6232 are mutually inhibited, and the outward divergence of the magnetic lines of force of the side magnet 6232 is effectively inhibited, so that the magnetic flux density in the magnetic gap 623a can be effectively increased, the magnetic field strength in the magnetic gap 623a is increased, the sensitivity of the loudspeaker module 60 is further improved, and the acoustic performance of the loudspeaker module 60 is improved. Meanwhile, since the second auxiliary magnet 6239 is located on the side of the diaphragm group 622 away from the magnetic circuit system 623, the magnetic flux density in the magnetic gap 623a is increased, and the overall volume of the magnetic circuit system 623 is not increased, which is beneficial to realizing the miniaturization design of the speaker module 60, and in the production process, the structures of the magnetic circuit system 623 and the inner core 62 of the speaker module 60 do not need to be changed, thereby effectively reducing the production cost.

In some embodiments, a second auxiliary magnet 6239 may be provided on the first cover plate 6111. Referring back to fig. 39, a second auxiliary magnet 6239 may be provided on the outer surface of the first cover plate 6111. In other embodiments, a second auxiliary magnet 6239 may also be disposed on the inner surface of the first cover plate 6111. For example, the second auxiliary magnet 6239 may be disposed on the outer surface or the inner surface of the reinforcing plate 6111c in the first cover plate 6111 by gluing, clipping, or the like. Thereby, the assembly of the second auxiliary magnet 6239 is facilitated.

In still other embodiments, please refer to fig. 41, fig. 41 is an assembly diagram of a speaker module 60 and an electronic device 100 according to some embodiments of the present application. A second auxiliary magnet 6239 may also be provided on the middle frame 30 of the electronic device 100. In other embodiments, the second auxiliary magnet 6239 may also be disposed on the housing of the electronic device 100. In this way, the second auxiliary magnet 6239 may be disposed in a space inside the electronic apparatus 100, which is advantageous for implementing a slim design of the electronic apparatus 100.

It is understood that, in other embodiments, only the second auxiliary magnet 6239 may be provided instead of the first auxiliary magnet 6238 in the speaker module 60. Referring to fig. 42, fig. 42 is a cross-sectional view of a speaker module 60 according to still other embodiments of the present application. The speaker module 60 in the present embodiment is different from the speaker module 60 shown in fig. 3 in that: in addition to the housing 61, the diaphragm set 622, the voice coil 6241 and the magnetic circuit system 623 in the speaker module 60 shown in fig. 3, the speaker module 60 in this embodiment further includes a second auxiliary magnet 6239, and the second auxiliary magnet 6239 is located on a side of the diaphragm set 622 away from the magnetic circuit system 623. Wherein the second auxiliary magnet 6239 is spaced apart from the diaphragm set 622 so as to avoid the second auxiliary magnet 6239 from interfering with the movement of the diaphragm set 622. The second auxiliary magnet 6239 may be positioned inside the case 61 or outside the case 61. The projection of the second auxiliary magnet 6239 on the diaphragm group 622 along the central axis of the diaphragm group 622 is a third projection S3, and the projection of the side magnet 6232 on the diaphragm group 622 along the central axis of the diaphragm group 622 is a fourth projection S4. The third projection S3 can be an orthographic projection of the second auxiliary magnet 6239 on the plane of the dome 6221. The fourth projection S4 is an orthographic projection of the edge magnet 6232 on the plane of the dome 6221. The third projection S3 overlaps the fourth projection S4. The third projection S3 partially or fully overlaps the fourth projection S4.

The magnetic pole direction of the second auxiliary magnet 6239 in this embodiment may be the same as the magnetic pole direction of the second auxiliary magnet 6239 shown in fig. 39 and 41, and will not be described again.

In this embodiment, the second auxiliary magnet 6239 may be disposed on the first cover plate 6111. Referring to fig. 41, a second auxiliary magnet 6239 may be provided on the outer surface of the first cover plate 6111. In other embodiments, a second auxiliary magnet 6239 may also be disposed on the inner surface of the first cover plate 6111. For example, the second auxiliary magnet 6239 may be disposed on the outer surface or the inner surface of the reinforcing plate 6111c in the first cover plate 6111 by gluing, clipping, or the like. Thereby, the assembly of the second auxiliary magnet 6239 is facilitated.

In still other embodiments, referring to fig. 43, a second auxiliary magnet 6239 may also be disposed on the middle frame 30 of the electronic device 100. In other embodiments, the second auxiliary magnet 6239 may also be disposed on the housing of the electronic device 100. The specific position of the second auxiliary magnet 6239 is not limited in the present application.

Since the electronic device 100 provided by some embodiments of the present application includes the speaker module 60, the audio performance of the electronic device 100 can be improved while the thin design of the electronic device 100 is satisfied.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A speaker module (60), comprising:

a diaphragm group (622);

a voice coil (6241), the voice coil (6241) being connected to the diaphragm group (622);

a magnetic circuit system (623), wherein the magnetic circuit system (623) comprises a central magnet (6231) and a side magnet (6232), the side magnet (6232) is arranged around the circumference of the central magnet (6231), and the voice coil (6241) is matched with the magnetic circuit system (623) to drive the diaphragm group (622) to vibrate;

a first auxiliary magnet (6238), the first auxiliary magnet (6238) being located on a side of the diaphragm group (622) away from the magnetic circuit system (623), a projection of the first auxiliary magnet (6238) on the diaphragm group (622) along a central axis of the diaphragm group (622) is a first projection (S1), a projection of the central magnet (6231) on the diaphragm group (622) along a central axis of the diaphragm group (622) is a second projection (S2), the first projection (S1) overlaps the second projection (S2), the magnetic pole of the first auxiliary magnet (6238) near the end of the central magnet (6231) being the same as the magnetic pole of the central magnet (6231) near the end of the first auxiliary magnet (6238), the magnetic pole of the end of the first auxiliary magnet (6238) remote from the central magnet (6231) is opposite to the magnetic pole of the end of the central magnet (6231) close to the first auxiliary magnet (6238).

2. The speaker module (60) of claim 1, further comprising:

casing (61), establish diaphragm group (622) in casing (61), diaphragm group (622) will casing (61) is separated for antechamber (601) and back chamber (602), magnetic circuit (623) are located back chamber (602), casing (61) include first apron (6111), first apron (6111) with diaphragm group (622) is relative, first apron (6111) with inject between diaphragm group (622) antechamber (601), first auxiliary magnet (6238) is established on first apron (6111).

3. The loudspeaker module (60) according to claim 2, wherein a groove (6111d) recessed towards the diaphragm group (622) is provided on the outer surface of the first cover plate (6111), and the first auxiliary magnet (6238) is provided within the groove (6111 d).

4. The speaker module (60) of claim 3, wherein a hollowed portion (6111e) is disposed on a bottom wall of the groove (6111d), and the first auxiliary magnet (6238) covers the hollowed portion (6111 e).

5. The speaker module (60) of claim 2, wherein the first cover plate (6111) is provided with a mounting hole (6111f), and the first auxiliary magnet (6238) is disposed in the mounting hole (6111 f).

6. The speaker module (60) of claim 5 wherein at least a portion of the first auxiliary magnet (6238) protrudes into the front cavity (601).

7. The loudspeaker module (60) according to claim 5 or 6, wherein a seal (6111g) is provided in the housing (61), the seal (6111g) being configured to seal a gap between the first auxiliary magnet (6238) and the mounting hole (6111 f).

8. The speaker module (60) of claim 5 or 6, wherein the first cover plate is a unitary structure with the first auxiliary magnet (6238).

9. The speaker module (60) of any of claims 2-8 wherein the first cover plate (6111) comprises:

the cover plate comprises a cover plate main body (6111a), wherein an assembly opening (6111b) is formed in the cover plate main body (6111 a);

the reinforcing plate (6111c) is arranged at the assembling opening (6111b) and used for plugging the assembling opening (6111b), and the first auxiliary magnet (6238) is arranged on the reinforcing plate (6111 c).

10. The speaker module (60) of any one of claims 1-9, further comprising:

a second auxiliary magnet (6239) located on a side of the diaphragm group remote from the magnetic circuit system (623), a projection of the second auxiliary magnet (6239) on the diaphragm group (622) along the central axis of the diaphragm group (622) is a third projection (S3), the projection of the side magnet (6232) on the diaphragm group (622) along the central axis of the diaphragm group (622) is a fourth projection (S4), the third projection (S3) overlaps the fourth projection (S4), the magnetic pole of the second auxiliary magnet (6239) near one end of the side magnet (6232) is the same as the magnetic pole of the side magnet (6232) near one end of the second auxiliary magnet (6239), the magnetic pole of one end of the second auxiliary magnet (6239) far away from the side magnet (6232) is opposite to the magnetic pole of one end of the side magnet (6232) close to the second auxiliary magnet (6239).

11. The speaker module (60) of claim 10, further comprising:

the shell (61), the shell (61) includes first apron (6111), diaphragm group (622) will the shell (61) is separated for antechamber (601) and back chamber (602), the shell (61) includes first apron (6111), first apron (6111) with inject between diaphragm group (622) antechamber (601), first apron (6111) with diaphragm group (622) is relative, second auxiliary magnet (6238) is established on first apron (6111).

12. A speaker module (60), comprising:

a diaphragm group (622);

a second auxiliary magnet (6239) located on a side of the diaphragm group remote from the magnetic circuit system (623), a projection of the second auxiliary magnet (6239) on the diaphragm group (622) along the central axis of the diaphragm group (622) is a third projection (S3), the projection of the side magnet (6232) on the diaphragm group (622) along the central axis of the diaphragm group (622) is a fourth projection (S4), the third projection (S3) overlaps the fourth projection (S4), the magnetic pole of the second auxiliary magnet (6239) near the end of the side magnet (6232) is the same as the magnetic pole of the side magnet (6232) near the end of the second auxiliary magnet (6239), the magnetic pole of one end of the second auxiliary magnet (6239) far away from the side magnet (6232) is opposite to the magnetic pole of one end of the side magnet (6232) close to the second auxiliary magnet (6239).

13. An electronic device (100), comprising:

the sound outlet hole (22a) is formed in the shell;

a speaker module (60), the speaker module (60) being disposed within the housing, the speaker module (60) being the speaker module (60) of any one of claims 1-9, the speaker module (60) having a sound outlet channel (60a), the sound outlet channel (60a) being in communication with the sound outlet aperture (22 a).

14. An electronic device (100), comprising:

the sound outlet hole (22a) is formed in the shell;

a speaker module (60), said speaker module (60) being disposed within said housing, said speaker module (60) being the speaker module (60) of claim 10 or 12, said speaker module (60) having a sound outlet channel (60a), said sound outlet channel (60a) being in communication with said sound outlet aperture (22 a).

15. The electronic device (100) of claim 14, further comprising:

a middle frame (30), the middle frame (30) is arranged in the shell, and the second auxiliary magnet (6239) is arranged on the middle frame (30).