Sound production apparatus, sound production module, and electronic device

Abstract

Disclosed in the present invention are a sound production apparatus, a sound production module, and an electronic device. The sound production apparatus comprises a magnetic circuit system, a conductive support, and a vibration system; the magnetic circuit system is provided with a magnetic gap and a mounting hole; the conductive support is provided in the mounting hole; the vibration system comprises a diaphragm assembly, a voice coil, and centering supports; the diaphragm assembly comprises a diaphragm, a frame, and a dome opposite to the magnetic circuit system; an inner annular hole is formed in the center of the diaphragm; the frame is provided in the inner annular hole and is connected to the diaphragm; the frame is provided with an assembling hole corresponding to the conductive support; the dome covers the assembling hole; one end of the voice coil is connected to the diaphragm or the frame, and the other end of the voice coil is suspended in the magnetic gap; and one end of each centering support is connected to the conductive support, and the other end of the centering support is connected to the frame and electrically connected to a lead of the voice coil. The sound production apparatus of the present invention has low magnetic flux leakage, and the sound production apparatus effectively improves the magnetic field strength and increases the BL value, thereby improving acoustic performance.

Description

Sound-generating device, sound-generating module and electronic equipment Technical Field

[0001] The present invention relates to the technical field of electroacoustic transducer technology, and in particular to a sound-generating device and a sound-generating module and electronic equipment using the sound-generating device. Background Art

[0002] In recent years, consumer electronics have experienced rapid growth, with smartphones, VR devices, and other electronic devices gaining widespread consumer acceptance. Technicians in this field have also developed improvements to related ancillary products, such as headphones, to meet the performance requirements of these electronic products and satisfy consumer demand for higher-quality products.

[0003] Sound generators are important electroacoustic transducers in consumer electronics, widely used in applications such as speakers, receivers, and headphones. As electronic product performance improves, the acoustic performance of these devices is also an inevitable trend. To achieve better acoustic performance, sound generators often require larger magnetic circuit systems with stronger magnetic field strength.

[0004] In the related art, the sound-emitting device usually adopts a centering support structure. By setting the centering support at the four corners of the sound-emitting device or the short axis of the sound-emitting device, part of the space of the magnetic circuit system is occupied, resulting in the size of the side magnets of the magnetic circuit system being limited and unable to be increased, thereby reducing the magnetic field strength of the magnetic circuit system, reducing the BL value, and affecting the acoustic performance of the sound-emitting device.

[0005] Summary of the Invention

[0006] The main purpose of the present invention is to provide a sound-generating device, a sound-generating module and an electronic device, aiming to provide a sound-generating device that effectively increases the magnetic circuit, effectively improves the magnetic field strength, increases the BL value, and thus improves the acoustic performance.

[0007] To achieve the above object, the present invention provides a sound-generating device, comprising:

[0008] A magnetic circuit system, the magnetic circuit system comprising a magnetic yoke and a central magnetic portion and an edge magnetic portion provided on the magnetic yoke, the edge magnetic portion being located outside the central magnetic portion and enclosing a magnetic gap with the central magnetic portion, the magnetic circuit system being provided with a mounting hole extending through the magnetic yoke and the central magnetic portion;

[0009] a conductive bracket, the conductive bracket being disposed in the mounting hole; and

[0010] A vibration system comprising a diaphragm assembly, a voice coil and a centering support plate. The diaphragm assembly comprises a diaphragm, a skeleton and a dome opposite to the magnetic circuit system. An inner ring hole is provided at the center of the diaphragm. The skeleton is provided in the inner ring hole and connected to the diaphragm. The skeleton is provided with an assembly hole corresponding to the conductive bracket. The dome cover is provided in the assembly hole. One end of the voice coil is connected to the diaphragm or the skeleton. The other end of the voice coil is suspended in the magnetic gap. One end of the centering support plate is electrically connected to the conductive bracket. The other end of the centering support plate is connected to the skeleton and electrically connected to the lead of the voice coil.

[0011] In one embodiment, the skeleton is further provided with a connecting platform adjacent to the assembly hole and extending toward the installation hole, and one end of the centering support piece away from the conductive bracket is connected to the connecting platform.

[0012] In one embodiment, the connecting platform is formed by bending or stretching a side of the frame adjacent to the assembly hole;

[0013] And / or, the connecting platform is an annular boss arranged around the assembly hole; or, the connecting platform includes multiple, multiple connecting platforms are arranged at intervals along the circumference of the assembly hole; or, the connecting platform includes two, and the two connecting platforms are respectively arranged corresponding to the major axis direction or minor axis direction of the magnetic circuit system.

[0014] In one embodiment, the connecting platform includes a first connecting arm and a second connecting arm arranged at an angle, the end of the first connecting arm away from the second connecting arm is connected to the inner wall of the assembly hole, the second connecting arm extends in a direction away from the skeleton, and the end of the centering support plate away from the conductive bracket is connected to the second connecting arm, the first connecting arm and the skeleton.

[0015] In one embodiment, the connecting platform further includes two arcuate side walls, which are respectively provided on both sides of the first connecting arm and connected to the second connecting arm and the inner wall of the assembly hole, so that the first connecting arm, the second connecting arm and the two arcuate side walls enclose an arcuate groove;

[0016] And / or, the first connecting arm is connected to the inner wall of the assembly hole in a smooth transition;

[0017] And / or, the first connecting arm and the second connecting arm are connected in a smooth transition.

[0018] In one embodiment, the diaphragm includes a rim portion, a fixing portion connected to the outer side of the rim portion, and an inner ring portion connected to the inner side of the rim portion, the inner ring portion forming the inner ring hole, and the periphery of the frame is connected to the inner ring portion and is located between the voice coil and the inner ring portion;

[0019] And / or, the frame is provided with a receiving groove around the assembly hole, and the ball top limit is located in the receiving groove;

[0020] And / or, a step surface is formed on the periphery of the skeleton, and the side of the diaphragm adjacent to the inner ring hole is supported and connected to the step surface, and the step surface is located between the voice coil and the diaphragm.

[0021] In one embodiment, the edge magnet portion includes an edge magnet and an edge washer provided on the edge magnet;

[0022] The side magnets and the side washers both form a closed annular structure; or, there are multiple side magnets and multiple side washers, which are arranged in a one-to-one correspondence, and adjacent side magnets are connected end to end to form a closed annular structure.

[0023] In one embodiment, the centering supports include a plurality of support plates, one end of each of the plurality of support plates is connected to the conductive bracket, and the other ends of each of the plurality of support plates are connected to the frame and electrically connected to the leads of the voice coil.

[0024] Each of the centering supports includes a first connecting portion, an elastic arm, and a second connecting portion connected in sequence. The first connecting portion is connected to the diaphragm assembly and electrically connected to the lead of the voice coil. The second connecting portion is connected to the conductive bracket.

[0025] In one embodiment, the plurality of centering arms are symmetrically distributed along the major axis direction and / or minor axis direction of the magnetic circuit system;

[0026] And / or, the first connection portion and the second connection portion are located in different planes;

[0027] And / or, the first connecting portion, the elastic arm and the second connecting portion are an integrally formed structure;

[0028] And / or, the elastic arm has at least one bend;

[0029] And / or, the side of the second connecting portion facing away from the conductive bracket is not higher than the side surface of the magnetic circuit system facing the diaphragm assembly;

[0030] And / or, a vibration space for avoiding the centering support piece is formed between the conductive bracket and the inner wall of the mounting hole.

[0031] In one embodiment, the conductive bracket is provided with a first welding surface and a second welding surface which are arranged in opposite directions. The first welding surface is arranged facing the assembly hole and connected to the centering support plate. The second welding surface is used to connect to an external power supply.

[0032] In one embodiment, a groove is provided on a side of the conductive bracket facing away from the first welding surface, and a bottom wall of the groove forms the second welding surface;

[0033] And / or, the conductive bracket includes a main body and a pad sheet, the pad sheet is embedded in the main body, the pad sheet includes a first pad portion and a second pad portion connected to each other, at least a portion of the first pad portion is exposed on the first welding surface, and at least a portion of the second pad portion is exposed on the second welding surface;

[0034] And / or, the first welding surface is provided with two first welding pads, and the two first welding pads are arranged at intervals along the long axis direction or the short axis direction of the magnetic circuit system;

[0035] And / or, the second welding surface is provided with two second welding pads, and the two second welding pads are arranged at intervals along the long axis direction or the short axis direction of the magnetic circuit system.

[0036] In one embodiment, the magnetic yoke is provided with a positioning platform adjacent to the mounting hole, and the positioning platform is connected to the conductive bracket;

[0037] In which, the positioning platform is formed by bending one side of the magnetic yoke adjacent to the mounting hole; and / or, the positioning platform is an annular boss arranged around the mounting hole; or, the positioning platform includes multiple positioning platforms, and the multiple positioning platforms are arranged at intervals along the circumference of the mounting hole; and / or, the positioning platform is located between the central magnetic part and the conductive bracket; and / or, the positioning platform includes a first positioning part and a second positioning part arranged at an angle, the first positioning part is connected to the magnetic yoke at one end away from the second positioning part, and the second positioning part extends in a direction away from the central magnetic part, and the conductive bracket is provided with a limit platform, and the limit platform is limitedly connected to the second positioning part; and / or, the conductive bracket is further provided with an air avoidance groove corresponding to the positioning platform, and the positioning platform is accommodated in the air avoidance groove.

[0038] In one embodiment, one or more pressed grooves are further provided on a side of the magnetic yoke facing away from the diaphragm, one end of the pressed groove is connected to the mounting hole, and the other end of the pressed groove extends toward the periphery of the magnetic yoke, and the pressed groove is used to avoid wiring;

[0039] Wherein, the pressing groove includes a plurality of;

[0040] The plurality of pressing grooves are arranged at intervals; and / or, the plurality of pressing grooves are arranged symmetrically with respect to the mounting hole; and / or, the plurality of pressing grooves are arranged radially with respect to the mounting hole as the center.

[0041] In one embodiment, the sound-generating device further includes a connecting bracket disposed on the mounting hole, the connecting bracket is provided with a fixing cavity, and the conductive bracket is disposed in the fixing cavity.

[0042] In one embodiment, a support groove is formed on a side of the magnetic yoke facing away from the diaphragm and surrounding the mounting hole. The connecting bracket includes a main body and a support platform surrounding the main body. The main body is provided with the fixing cavity. The main body is inserted into the mounting hole. The support platform is accommodated and constrained in the support groove.

[0043] And / or, the connecting bracket is further provided with a clearance gap communicating with the fixing cavity, the clearance gap being used for avoiding wiring;

[0044] And / or, the inner wall of the fixing cavity is provided with a positioning protrusion and / or a positioning groove, the periphery of the conductive bracket is provided with a limiting protrusion, the conductive bracket is arranged in the fixing cavity, and the limiting protrusion is positioned and matched with the positioning protrusion and / or the positioning groove;

[0045] And / or, the connecting bracket is a metal stamping part.

[0046] The present invention further provides a sound module, comprising:

[0047] module housing;

[0048] The sound-generating device described above is disposed in the module housing; and

[0049] A flexible circuit board, one end of which is electrically connected to the conductive bracket of the sound-generating device, and the other end of which is used to connect to an external power supply.

[0050] In one embodiment, a positioning ear is provided at one end of the flexible circuit board adjacent to the conductive bracket, and the conductive bracket is formed with a positioning side wall that is positioned and matched with the positioning ear;

[0051] And / or, the conductive bracket is further provided with a clearance gap corresponding to the flexible circuit board.

[0052] The present invention also provides an electronic device, comprising the above-mentioned sound-generating device;

[0053] Alternatively, the electronic device includes the sound module described above.

[0054] The technical solution of the present invention.

[0055] The sound-generating device of the technical solution of the present invention is configured by configuring the magnetic circuit system as a magnetic yoke and a central magnetic portion and a side magnetic portion provided on the magnetic yoke, so that the side magnetic portion is located outside the central magnetic portion and encloses the central magnetic portion to form a magnetic gap, and configuring the vibration system as a diaphragm assembly, a voice coil and a centering support plate opposite to the magnetic circuit system, so that one end of the voice coil is connected to the diaphragm assembly and the other end of the voice coil is suspended in the magnetic gap. In this way, when current is passed through the voice coil, the voice coil converts electrical energy into mechanical energy in the magnetic gap formed by the magnetic circuit system, thereby driving the voice coil to drive the diaphragm assembly to vibrate, thereby achieving sound generation; When the centering support is fixed, the centering support is fixed to the diaphragm assembly and the voice coil. The centering support is connected to the external circuit through the centering support and the conductive bracket. At the same time, the centering support can effectively prevent the voice coil from swinging or polarizing, thereby improving the acoustic performance of the sound-generating device. The installation hole is set at the central position where the field utilization rate is not high, which can not only reduce weight but also realize the installation and fixation of the conductive bracket. Moreover, since the centering support piece is set in the installation hole in the middle of the central magnetic part, the centering support piece will not occupy the installation space of the side magnetic part, so that the side magnetic part can increase the installation volume, and the magnetic field strength of the magnetic circuit system can be improved, thereby improving the BL value and the acoustic performance of the sound-generating device. In addition, since the central position of the central magnetic part has serious magnetic leakage, the installation hole needs to be formed by removing at least a part of the central magnet at the central position of the central magnetic part, thereby reducing the central magnet. When the sound-generating device is assembled on an electronic device, the influence of the central magnet in the sound-generating device on the performance of the electronic device due to the leakage of magnetic field can be reduced, thereby meeting the requirements of the electronic device for the leakage of magnetic field; further, by setting the diaphragm assembly as a diaphragm, a skeleton and a dome, and providing an assembly hole on the skeleton corresponding to the conductive bracket, the assembly hole can be conveniently utilized to assemble the centering support plate, thereby improving the assembly efficiency, and the dome cover is arranged on the assembly hole, which can effectively achieve sealing, avoid the drop of sound pressure, reduce the sound effect, and at the same time prevent debris from entering the interior of the sound-generating device through the assembly hole and affecting the performance of the sound-generating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0057] FIG1 is a schematic structural diagram of a sound-generating device according to an embodiment of the present invention;

[0058] FIG2 is a schematic structural diagram of a sound-generating device from another perspective according to an embodiment of the present invention;

[0059] FIG3 is an exploded schematic diagram of a sound-generating device according to an embodiment of the present invention;

[0060] FIG4 is a schematic cross-sectional view of a sound-generating device along the long axis in one embodiment of the present invention;

[0061] FIG5 is a schematic structural diagram of a sound-generating device according to another embodiment of the present invention;

[0062] FIG6 is an exploded schematic diagram of a sound-generating device according to another embodiment of the present invention;

[0063] FIG7 is a schematic cross-sectional view of a sound-generating device along the long axis in another embodiment of the present invention;

[0064] FIG8 is a schematic cross-sectional view of a sound-generating device along the minor axis in another embodiment of the present invention;

[0065] FIG9 is a schematic structural diagram of the connection between the bobbin, voice coil, centering support and conductive bracket according to an embodiment of the present invention;

[0066] FIG10 is a schematic structural diagram of the connection between the skeleton, the centering support piece and the conductive bracket according to one embodiment of the present invention;

[0067] FIG11 is a schematic structural diagram of the connection between the skeleton, the centering support piece and the conductive bracket in another embodiment of the present invention;

[0068] FIG12 is a schematic structural diagram of a skeleton according to an embodiment of the present invention;

[0069] FIG13 is a schematic structural diagram of a skeleton in another embodiment of the present invention;

[0070] FIG14 is a schematic structural diagram of a magnetic yoke according to an embodiment of the present invention;

[0071] FIG15 is a schematic structural diagram of a magnetic yoke in another embodiment of the present invention;

[0072] FIG16 is a schematic structural diagram of a magnetic yoke in another embodiment of the present invention;

[0073] FIG17 is a schematic structural diagram of a conductive bracket according to an embodiment of the present invention;

[0074] FIG18 is a schematic structural diagram of a centering support plate according to an embodiment of the present invention;

[0075] FIG19 is a schematic structural diagram of the connection between the conductive bracket and the connecting bracket according to an embodiment of the present invention;

[0076] FIG20 is a structural diagram illustrating the connection between the conductive bracket and the connecting bracket from another perspective in one embodiment of the present invention;

[0077] FIG21 is a schematic structural diagram of a connecting bracket according to an embodiment of the present invention;

[0078] FIG22 is a schematic structural diagram of a sound module according to an embodiment of the present invention;

[0079] FIG23 is a schematic structural diagram of a sound module in another embodiment of the present invention.

[0080] Description of Figure Numbers:

[0081] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0082] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0083] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0084] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or an option in which both A and B are satisfied.

[0085] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0086] The present invention provides a sound-generating device 100. It is understandable that the sound-generating device 100 is applied to an electronic device, which may be a smart watch, a mobile phone, a speaker, a computer, a headset, or a television, etc., without limitation herein.

[0087] 1 to 21 , in an embodiment of the present invention, the sound-generating device 100 includes a magnetic circuit system 2, a conductive bracket 3, and a vibration system 4, wherein the magnetic circuit system 2 includes a magnetic yoke 21 and a central magnetic portion 22 and an edge magnetic portion 23 provided on the magnetic yoke 21, the edge magnetic portion 23 being located outside the central magnetic portion 22 and enclosing the central magnetic portion 22 to form a magnetic gap 24, the magnetic circuit system 2 is provided with a mounting hole 25 passing through the magnetic yoke 21 and the central magnetic portion 22, the conductive bracket 3 is provided in the mounting hole 25, the vibration system 4 includes a diaphragm assembly 41, a voice coil 42, and a centering support 43, the diaphragm assembly 41 includes The diaphragm 411, the skeleton 412 and the dome 413 are opposite to the magnetic circuit system 2. An inner ring hole 4114 is provided in the center of the diaphragm 411. The skeleton 412 is provided in the inner ring hole 4114 and is connected to the diaphragm 411. The skeleton 412 is provided with an assembly hole 4121 corresponding to the conductive bracket 3. The dome 413 covers the assembly hole 4121. One end of the voice coil 42 is connected to the diaphragm 411 or the skeleton 412, and the other end of the voice coil 42 is suspended in the magnetic gap 24. One end of the centering support piece 43 is electrically connected to the conductive bracket 3, and the other end of the centering support piece 43 is connected to the skeleton 412 and is electrically connected to the lead of the voice coil 42.

[0088] In this embodiment, the sound-emitting device 100 can be a sound-emitting unit of a loudspeaker, and the loudspeaker can be a micro-loudspeaker. It should be noted that the magnetic circuit system 2 and the vibration system 4 of the sound-emitting device 100 are arranged relative to each other. Optionally, the magnetic circuit system 2 is arranged in a square shape. For example, the magnetic circuit system 2 can include a central magnetic portion 22 and a side magnetic portion 23, both of which are square structures. The vibration system 4 is also arranged in a square shape. It can be understood that the periphery of the diaphragm assembly 41 of the vibration system 4 can be connected to the magnetic circuit system 2, or the magnetic circuit system 2 and the vibration system 4 can be respectively assembled on the module shell, etc., which is not limited here.

[0089] In order to better assemble the magnetic circuit system 2 and the vibration system 4 of the sound-generating device 100, in one embodiment, as shown in Figures 1 to 8, the sound-generating device 100 also includes a shell 1, the magnetic circuit system 2 is connected to one end of the shell 1, and the vibration system 4 is connected to the other end of the shell 1 and is arranged opposite to the magnetic circuit system 2, that is, the periphery of the diaphragm assembly 41 of the vibration system 4 is connected to the other end of the shell 1 and is arranged opposite to the magnetic circuit system 2.

[0090] In this embodiment, the housing 1 is used to install, fix and support components such as the magnetic circuit system 2 and the vibration system 4, that is, the housing 1 provides an installation base for components such as the magnetic circuit system 2 and the vibration system 4. It can be understood that the housing 1 can be an integral structure or can be formed by the cooperation of multiple split structures, which is not limited here. The housing 1 in this embodiment can be optionally a square frame or frame structure, that is, the housing 1 has a cavity with openings at both ends, and the magnetic circuit system 2 and the vibration system 4 are respectively connected to the two sides of the housing 1 and are arranged relative to each other, so that the magnetic circuit system 2, the housing 1 and the diaphragm assembly 41 of the vibration system 4 enclose to form a vibration cavity.

[0091] It is understood that the sound-generating device 100 is used in an electronic device, that is, the sound-generating device 100 can be installed in the electronic device through the housing 1. It should be noted that the housing 1 of the sound-generating device 100 can be a housing or box structure independent of the electronic device. In this case, the housing 1 is used to integrate the magnetic circuit system 2 and the vibration system 4 of the sound-generating device 100 into an integral structure, thereby facilitating assembly and disassembly. Of course, the housing 1 of the sound-generating device 100 can also be configured as an integrally molded structure with the housing or box structure of the electronic device, which can effectively improve the structural strength and sealing performance.

[0092] In this embodiment, the housing 1 is used to house and fix the vibration system 4 and the magnetic circuit system 2, etc., so that the sound-generating device 100 can be used as an independent component in an electronic device or a sound module, which is not limited here. Of course, in other embodiments, the sound-generating device 100 can also be a modular structure, in which case the vibration system 4 and the magnetic circuit system 2 of the sound unit are installed as multiple independent components on the modular housing 1, which is not limited here.

[0093] It is understood that by configuring the magnetic circuit system 2 as a magnetic yoke 21 and a central magnetic portion 22 and a side magnetic portion 23 provided on the magnetic yoke 21, the magnetic circuit system 2 can be connected to the housing 1 via the periphery of the magnetic yoke 21; alternatively, the magnetic circuit system 2 can be connected to the housing 1 via the side magnetic portion 23, without limitation herein. In this embodiment, the side magnetic portion 23 is located outside the central magnetic portion 22 and encloses the central magnetic portion 22 to form a magnetic gap 24. This allows the diaphragm assembly 41 of the vibration system 4 to be connected to the end of the housing 1 away from the magnetic yoke 21 and opposite and spaced from the magnetic circuit system 2. This allows one end of the voice coil 42 to be connected to the diaphragm assembly 41, while the other end of the voice coil 42 is suspended within the magnetic gap 24.

[0094] In order to achieve electrical connection between the voice coil 42 and the external circuit, the sound-emitting device in the related art usually adopts a centering support structure, and the two ends of the centering support 43 are electrically connected to the voice coil 42 lead and the external circuit respectively. By setting the centering support 43 at the four corners of the sound-emitting device 100 or the short axis of the sound-emitting device, that is, setting avoidance space at the four corners or short axis of the magnetic circuit system 2 to provide installation space or installation position for the centering support 43, the centering support 43 will occupy part of the space of the magnetic circuit system 2, resulting in the side magnet size of the magnetic circuit system 2 being limited and unable to be increased, resulting in the magnetic field strength of the magnetic circuit system 2 being not high, reducing the BL value, and thus affecting the acoustic performance of the sound-emitting device 100.

[0095] In this embodiment, a mounting hole 25 is provided in the magnetic circuit system 2, so that the magnetic gap 24 is arranged around the mounting hole 25, and a conductive bracket 3 is provided in the mounting hole 25, so that one end of the centering support 43 is electrically connected to the soldering pad of the conductive bracket 3, and the other end of the centering support 43 is connected to the diaphragm assembly 41 and electrically connected to the lead of the voice coil 42. In this way, the external current is introduced into the voice coil 42 through the conductive bracket 3 and the centering support 43. At the same time, the centering support 43 is used to center the vibration of the voice coil 42, thereby preventing the voice coil 42 from swinging or polarizing during the vibration process, thereby improving the sound effect and acoustic performance of the sound-generating device 100.

[0096] It can be understood that the mounting hole 25 passes through the magnetic yoke 21 and the central magnetic part 22 of the magnetic circuit system 2. The magnetic field utilization rate at the central position of the central magnetic part 22 of the magnetic circuit system 2 is low. By setting the mounting hole 25 on the magnetic circuit system 2, for example, the mounting hole 25 can be set at the central position of the central magnetic part 22 in the magnetic circuit system 2 where the magnetic field utilization rate is not high. Under the premise of having little impact on the magnetic field strength of the magnetic circuit system, it is possible to achieve both weight reduction and installation and fixation of the conductive bracket 3. Moreover, since the centering support piece 43 is arranged in the mounting hole 25 in the middle of the central magnetic part 22, the centering support piece 43 will not occupy the setting space of the side magnetic part 23, so that the side magnetic part 23 can increase the setting volume, which can improve the magnetic field strength of the magnetic circuit system 2, and then improve the BL value, thereby improving the acoustic performance of the sound-generating device 100. In addition, due to the serious magnetic leakage at the central position of the central magnetic portion 22, the mounting hole 25 needs to be formed by removing at least a portion of the central magnet 221 at the central position of the central magnetic portion 22, thereby reducing the magnetic leakage of the central magnet 221. When the sound-emitting device 100 is assembled in an electronic device, the influence of the magnetic leakage of the central magnet 221 in the sound-emitting device 100 on the performance of the electronic device can be reduced, thereby meeting the requirements of the electronic device for magnetic leakage.

[0097] Optionally, the mounting hole 25 can be a polygonal hole or a special-shaped hole such as a circular hole, an elliptical hole, a square hole, or a triangular hole, and the specific selection and setting is based on actual needs and is not limited here. In this embodiment, a through-hole structure is formed in the center of the central magnetic portion 22, and a third through-hole is also formed in the center of the magnetic yoke 21 corresponding to the through-hole structure of the central magnetic portion 22. In this case, the through-hole structure of the central magnetic portion 22 is connected to the third through-hole of the magnetic yoke 21 to form the mounting hole 25.

[0098] In one embodiment, the diaphragm assembly 41 includes a diaphragm 411, a skeleton 412, and a dome 413. The diaphragm 411 is arranged opposite to the magnetic circuit system 2. An inner ring hole 4114 is provided in the center of the diaphragm 411. The skeleton 412 is provided in the inner ring hole 4114 and is connected to the diaphragm 411. The centering support 43 is connected to the skeleton 412. The skeleton 412 has an assembly hole 4121 corresponding to the conductive bracket 3. The dome 413 covers the assembly hole 4121. The voice coil 42 is connected to the diaphragm 411 or the skeleton 412.

[0099] In this embodiment, as shown in Figures 1, 3, 4, 6 to 13, the diaphragm assembly 41 is configured as a three-part structure consisting of a diaphragm 411, a frame 412, and a dome 413. The periphery of the diaphragm 411 is connected to the housing 1, and an inner ring hole 4114 is formed in the center of the diaphragm. By providing the frame 412 at the inner ring hole 4114, the frame 412 is utilized to connect and secure the voice coil 42 and the centering support 43, thereby improving installation stability. Furthermore, by providing an assembly hole 4121 in the frame 412 corresponding to the conductive bracket 3, the centering support 43 can be conveniently installed and secured using the assembly hole 4121, thereby connecting and securing the centering support 43 to the conductive bracket 3 and the frame 412, thereby improving installation convenience.

[0100] It can be understood that in order to seal the assembly hole 4121, a spherical top 413 is provided at the assembly hole 4121 so that the spherical top 413 covers the assembly hole 4121. This can not only seal the assembly hole 4121 but also ensure the vibration performance of the diaphragm assembly 41.

[0101] The sound-generating device 100 of the present invention is configured by configuring the magnetic circuit system 2 as a magnetic yoke 21 and a central magnetic portion 22 and a side magnetic portion 23 provided on the magnetic yoke 21, so that the side magnetic portion 23 is located outside the central magnetic portion 22 and forms a magnetic gap 24 with the central magnetic portion 22. The vibration system 4 is configured as a diaphragm assembly 41, a voice coil 42 and a centering support 43 opposite to the magnetic circuit system 2, so that one end of the voice coil 42 is connected to the diaphragm assembly 41 and the other end of the voice coil 42 is suspended in the magnetic gap 24. In this way, current is passed through the voice coil 42, so that the voice coil 42 is in the magnetic circuit system 2. The electrical energy is converted into mechanical energy in the magnetic gap 24 formed to drive the voice coil 42 to drive the diaphragm assembly 41 to vibrate, thereby achieving sound production; at the same time, by providing a mounting hole 25 that passes through the magnetic yoke 21 and the central magnetic portion 22 in the magnetic circuit system 2, and arranging a conductive bracket 3 in the mounting hole 25, one end of the centering support 43 is electrically connected to the pad of the conductive bracket 3, and the other end of the centering support 43 is connected to the diaphragm assembly 41 and is electrically connected to the lead of the voice coil 42, so that the conductive bracket 3 can be used to achieve the installation and fixation of the centering support 43 and the voice coil 42. The connection with the external circuit is achieved through the centering support piece 43 and the conductive bracket 3. At the same time, the centering support piece 43 can also effectively prevent the voice coil 42 from swinging or polarizing, thereby improving the acoustic performance of the sound-generating device 100. In addition, by setting the mounting hole 25 at the central position of the magnetic field utilization rate of the central magnetic part 22 in the magnetic circuit system 2 is not high, both weight reduction and installation and fixation of the conductive bracket 3 can be achieved. Moreover, since the centering support piece 43 is set in the mounting hole 25 in the middle of the central magnetic part 22, the centering support piece 43 will not occupy the setting space of the side magnetic part 23, so that the side magnetic part 23 can be fixed. By increasing the setting volume, the magnetic field strength of the magnetic circuit system 2 can be improved, and then the BL value can be increased, thereby improving the acoustic performance of the sound-emitting device 100; in addition, since the leakage flux at the central position of the central magnetic part 22 is serious, the mounting hole 25 needs to be formed by removing at least a portion of the central magnet 221 at the central position of the central magnetic part 22, thereby reducing the leakage flux of the central magnet 221. When the sound-emitting device 100 is assembled in an electronic device, the influence of the central magnet 221 in the sound-emitting device 100 on the performance of the electronic device due to leakage flux can be reduced, thereby meeting the requirements of the electronic device for leakage flux. Furthermore, by configuring the diaphragm assembly 41 to consist of a diaphragm 411, a skeleton 412, and a dome 413, and providing an assembly hole 4121 on the skeleton 412 corresponding to the conductive bracket 3, the assembly hole can be conveniently utilized to assemble the centering support plate, thereby improving assembly efficiency, and the dome 413 is covered in the assembly hole 4121, thereby effectively achieving sealing, avoiding a drop in sound pressure, and reducing the sound effect, while preventing debris from entering the interior of the sound-generating device 100 through the assembly hole 4121 and affecting the performance of the sound-generating device 100.

[0102] In one embodiment, the frame 412 is further provided with a connecting platform 4124 adjacent to the assembly hole 4121 and extending toward the mounting hole 25 . An end of the centering support piece 43 away from the conductive bracket 3 is connected to the connecting platform 4124 .

[0103] In this embodiment, as shown in Figures 3 to 4 and 6 to 13, a connecting platform 4124 is provided on the frame 412, extending toward the interior of the mounting hole 25. This allows the connecting platform 4124 to further secure the centering support 43, thereby improving the connection stability of the centering support 43. It will be appreciated that, because a gap exists between the diaphragm assembly 41 and the central magnetic portion 22 to define the vibration space 33, the top surface of the centering support 43 does not exceed the top surface of the central magnetic portion 22. Therefore, along the vibration direction of the vibration system 4, there is a height difference between the centering support 43 and the diaphragm assembly 41. By providing the connecting platform 4124 extending toward the interior of the mounting hole 25, the connecting platform 4124 can extend to the plane where the centering support 43 is located and connect to the centering support 43, thereby facilitating assembly.

[0104] Of course, it is understandable that the end of the centering support 43 away from the conductive bracket 3 can also extend toward the diaphragm assembly 41, thereby facilitating the assembly of the centering support 43 and the diaphragm assembly 41.

[0105] Optionally, the connecting platform 4124 is formed by bending or stretching a side of the frame 412 adjacent to the assembly hole 4121. For example, the connecting platform 4124 is formed as a vertically extending structure extending from a sidewall of the frame 412 adjacent to the assembly hole 4121 along the vibration direction (vertical direction) of the vibration system 4. This configuration can effectively improve the structural strength and processing ease of the connecting platform 4124. Of course, in other embodiments, the connecting platform 4124 and the frame 412 can also be provided as separate components and connected to form an integrated structure through welding or bonding, which is not limited here.

[0106] Optionally, the connecting platform 4124 is an annular boss disposed around the assembly hole 4121. As will be appreciated, the annular connection platform 4124 facilitates the connection and fixation of multiple centering supports 43, improving installation convenience. Of course, in other embodiments, the connecting platform 4124 comprises multiple connecting platforms 4124, each of which is spaced apart along the periphery of the assembly hole 4121. Optionally, the connecting platform 4124 comprises two connecting platforms, each of which is disposed in the direction of the major axis or the minor axis of the magnetic circuit system 2.

[0107] In one embodiment, the connecting platform 4124 includes a first connecting arm 4125 and a second connecting arm 4126 arranged at an angle, the end of the first connecting arm 4125 away from the second connecting arm 4126 is connected to the inner wall of the assembly hole 4121, the second connecting arm 4126 extends in a direction away from the skeleton 412, and the end of the centering support plate 43 away from the conductive bracket 3 is connected to the second connecting arm 4126, the first connecting arm 4125 and the skeleton 412.

[0108] In this embodiment, as shown in Figures 12 and 13, by setting the connecting platform 4124 to the first connecting arm 4125 and the second connecting arm 4126 set at an angle, that is, the first connecting arm 4125 and the second connecting arm 4126 are set in an L shape, the contact area with the centering support plate 43 can be further increased, thereby improving the installation stability.

[0109] Optionally, the shape and structure of the first connecting portion 431 of the centering support plate 43 is similar to the shape and structure of the connecting platform 4124. In this way, the second connecting arm 4126 can be used to position the centering support plate 43, and the first connecting arm 4125 and the second connecting arm 4126 can be used to connect and fix the L-shaped first connecting portion 431 to guide the first connecting portion 431 to the side of the skeleton 412 facing away from the dome 413, so as to facilitate the connection and fixation of the lead of the voice coil 42 to the first connecting portion 431. This is not limited here.

[0110] In one embodiment, as shown in Figure 13, the connecting platform 4124 also includes two curved side walls, which are respectively arranged on both sides of the first connecting arm 4125 and connected to the second connecting arm 4126 and the inner wall of the assembly hole 4121, so that the first connecting arm 4125, the second connecting arm 4126 and the two curved side walls enclose an arc groove.

[0111] It is understood that when the connecting platform 4124 is formed by stretching, it can form a semi-grooved structure, so that both sides of the first connecting arm 4125 and the second connecting arm 4126 of the connecting platform 4124 have curved sidewalls, which is more convenient for operation. Optionally, the first connecting arm 4125 is connected to the inner wall of the assembly hole 4121 in a smooth transition. Optionally, the first connecting arm 4125 and the second connecting arm 4126 are connected in a smooth transition.

[0112] It should be noted that the specific structural design of the connecting platform 4124 is not limited to the above-described case. As long as the centering support piece 43 can be installed and fixed, the present invention does not impose any specific restrictions on this.

[0113] In one embodiment, as shown in Figures 1, 3, 4, 6 to 8, the diaphragm 411 includes a folded ring portion 4111, a fixing portion 4112 connected to the outer side of the folded ring portion 4111, and an inner ring portion 4113 connected to the inner side of the folded ring portion 4111. The inner ring portion 4113 forms an inner ring hole 4114. The periphery of the skeleton 412 is connected to the inner ring portion 4113 and is located between the voice coil 42 and the inner ring portion 4113.

[0114] It is understood that the fixing portion 4112, the folding ring portion 4111, and the inner ring portion 4113 of the diaphragm 411 are sequentially connected to form an integral structure, thereby ensuring the vibration performance and structural strength of the diaphragm 411. The folding ring portion 4111 has an upwardly protruding convex structure or a downwardly concave groove structure, which is not limited here.

[0115] In this embodiment, as shown in Figures 1, 3 to 4, and 6 to 13, the frame 412 is provided with a receiving groove 4122 surrounding the assembly hole 4121, and the dome 413 is confined within the receiving groove 4122. It will be appreciated that by providing the receiving groove 4122 on the side of the frame 412 facing away from the voice coil 42, the receiving groove 4122 is provided surrounding the assembly hole 4121. This facilitates the use of the receiving groove 4122 to install and accommodate the dome 413, ensuring that the upper surface of the dome 413 is flush with the upper surface of the frame 412, thereby reducing the height of the sound-generating device 100 along the vibration direction of the vibration system 4 and ensuring the vibration performance of the entire diaphragm assembly 41.

[0116] Optionally, a step surface 4123 is formed on the periphery of the skeleton 412 , and one side of the diaphragm 411 adjacent to the inner ring hole 4114 is supported and connected to the step surface 4123 . The step surface 4123 is located between the voice coil 42 and the diaphragm 411 .

[0117] In this embodiment, as shown in Figures 3 to 4 and Figures 6 to 13, a step surface 4123 is provided on the periphery of the skeleton 412 so that the step surface 4123 is recessed toward the side of the voice coil 42, thereby ensuring that when the inner ring portion 4113 of the diaphragm 411 is overlapped and supported on the step surface 4123 of the skeleton 412, the upper surface of the inner ring portion 4113 of the diaphragm 411 is flush with the upper surface of the skeleton 412, thereby making the assembly structure more compact and ensuring the vibration performance of the entire diaphragm assembly 41.

[0118] In one embodiment, the edge magnetic portion 23 may optionally be annular. In this case, the annular edge magnetic portion 23 is located outside the central magnetic portion 22 and is spaced apart from the central magnetic portion 22 to form a magnetic gap 24. In this embodiment, the edge magnetic portion 23 includes an edge magnet 231 and an edge washer 232 disposed on the edge magnet 231. The edge magnet 231 is sandwiched between the magnetic yoke 21 and the edge washer 232. Optionally, the edge magnet 231 and the edge washer 232 each form a closed annular structure.

[0119] Of course, in other embodiments, the edge magnets 23 include multiple edge magnets 23, which are disposed around the outside of the central magnetic portion 22 and spaced apart from the central magnetic portion 22 to form a magnetic gap 24. Optionally, there are multiple edge magnets 231 and edge washers 232, which are disposed in a one-to-one correspondence, with adjacent edge magnets 231 connected end to end to form a closed ring structure.

[0120] It should be noted that the centering support plate 43 in the present invention is arranged in the mounting hole 25 in the middle of the central magnetic part 22. Compared with the traditional solution in which the centering support plate 43 is arranged at the four corners of the magnetic circuit system 2, the centering support plate 43 in the present invention does not occupy the setting space of the edge magnetic part 23. There is no need to set up a accommodating space for the centering support plate 43 between two adjacent edge magnets 231, so that the edge magnets 231 can be set into a closed ring structure, thereby increasing the setting volume of the edge magnets 231, improving the magnetic field strength of the magnetic circuit system 2, and then improving the BL value.

[0121] In one embodiment, the centering supports 43 include multiple ones, one end of each of the centering supports 43 is connected to the conductive bracket 3 , and the other end of each of the centering supports 43 is connected to the frame 412 and electrically connected to the leads of the voice coil 42 .

[0122] In this embodiment, as shown in Figures 3, 4, 6, 7, 9 to 11, and 18, multiple centering arms 43 are provided, so that one end of each of the centering arms 43 is connected to the conductive support 3, and the other ends of each of the centering arms 43 are connected to the diaphragm assembly 41 and electrically connected to the leads of the voice coil 42. Optionally, the multiple centering arms 43 are symmetrically distributed along the major axis and / or minor axis of the magnetic circuit system 2.

[0123] Optionally, the centering supports 43 include two or four. This arrangement can not only utilize the centering supports 43 to connect the conductive bracket 3 and the voice coil 42, but also ensure the vibration balance of the sound-generating device 100.

[0124] It is understood that when there are two centering supports 43, the two centering supports 43 are spaced apart along the long axis of the magnetic circuit system 2; or, the two centering supports 43 are spaced apart along the short axis of the magnetic circuit system 2, without limitation. Of course, when there are four centering supports 43, two centering supports 43 are spaced apart along the long axis of the magnetic circuit system 2, and two centering supports 43 are spaced apart along the short axis of the magnetic circuit system 2, without limitation.

[0125] In one embodiment, each centering support 43 includes a first connecting portion 431, an elastic arm 432, and a second connecting portion 433 connected in sequence. The first connecting portion 431 is connected to the diaphragm assembly 41 and is electrically connected to the lead of the voice coil 42. The second connecting portion 433 is connected to the conductive bracket 3.

[0126] In this embodiment, as shown in FIG18 , the first connecting portion 431 , the elastic arm 432 , and the second connecting portion 433 of the centering support 43 may be integrally formed. This effectively ensures the structural strength of the centering support 43 while simplifying the processing steps of the centering support 43 .

[0127] As will be appreciated, to ensure the deformability of the centering support 43, the elastic arm 432 has at least one bend. In this embodiment, a vibration space 33 is formed between the conductive bracket 3 and the inner wall of the mounting hole 25 to accommodate the centering support 43. This ensures that the centering support 43 has sufficient vibration space when vibrating with the voice coil 42, avoiding interference or impact on other components. Optionally, the side of the second connecting portion 433 facing away from the conductive bracket 3 is no higher than the surface of the magnetic circuit system 2 facing the diaphragm assembly 41.

[0128] In one embodiment, as shown in FIG18 , the first connection portion 431 and the second connection portion 433 are located in different planes. It is understood that by arranging the first connection portion 431 and the second connection portion 433 of the centering support 43 in different planes, a height difference is created between the planes containing the first connection portion 431 and the second connection portion 433 in the vibration direction of the voice coil 42. This facilitates the connection of the first connection portion 431 of the centering support 43 to the frame 412 of the diaphragm assembly 41 while also allowing for smooth welding to the leads of the voice coil 42. This also ensures that the centering support 43 avoids interference with the center washer 222 of the central magnetic portion 22 during vibration, thereby reducing the size of the avoidance area 223 provided on the central magnetic portion 22. Furthermore, the centering support 43 is utilized to connect the conductive bracket 3 to the diaphragm assembly 41 and effectively prevents problems such as oscillation or polarization of the voice coil 42 during vibration.

[0129] In one embodiment, the conductive bracket 3 is provided with a first welding surface 316 and a second welding surface 317 which are arranged in opposite directions. The first welding surface 316 is arranged facing the assembly hole 4121 and connected to the centering support piece 43. The second welding surface 317 is used to connect to an external power supply.

[0130] In this embodiment, as shown in Figures 2 to 11, 17, 19, and 20, a first welding surface 316 is formed on the side of the conductive bracket 3 facing the centering support plate 43, and a second welding surface 317 is provided on the side of the conductive bracket 3 facing away from the first welding surface 316. In this way, the first welding surface 316 can be used to connect and conduct with the centering support plate 43, and the second welding surface 317 can be used to connect to an external power supply, so that the conductive bracket 3 connects and conducts the external circuit with the centering support plate 43 to power the voice coil 42.

[0131] Optionally, the first welding surface 316 is not higher than the surface of the side of the central magnetic part 22 facing the diaphragm assembly 41. It can be understood that by setting the first welding surface 316 to be no higher than the surface of the side of the central magnetic part 22 facing the diaphragm assembly 41, the space between the diaphragm assembly 41 and the central magnetic part 22 can ensure the amplitude of the diaphragm assembly 41 and meet the sound generation requirements. Optionally, the first welding surface 316 can be flush with the top surface of the central magnetic part 22; or, the first welding surface 316 can also be located below the top surface of the central magnetic circuit 22, etc., which is not limited here. Such a setting can facilitate the installation of the centering support plate 43 without affecting the diaphragm assembly 41, and can also ensure that the centering support plate 43 has enough vibration space during the vibration process.

[0132] In one embodiment, a groove 318 is provided on a side of the conductive bracket 3 facing away from the first welding surface 316 , and a bottom wall of the groove 318 forms the second welding surface 317 .

[0133] In this embodiment, as shown in Figures 2 to 11, 17, 19, 20, 22 and 23, a groove 318 is provided on the side of the conductive bracket 3 facing away from the first welding surface 316, so that the bottom wall of the groove 318 forms a second welding surface 317, thereby providing an installation space for the conductive circuit or flexible circuit board used to connect the conductive bracket 3, and protecting the conductive circuit or the flexible circuit board.

[0134] In one embodiment, the conductive bracket 3 includes a main body 31 and a pad piece 32, the pad piece 32 is embedded in the main body 31, and the pad piece 32 includes a first pad portion 321 and a second pad portion 322 connected to each other, at least a portion of the first pad portion 321 is exposed on the first welding surface 316, and at least a portion of the second pad portion 322 is exposed on the second welding surface 317.

[0135] In this embodiment, as shown in Figures 2 to 11, 17, 19, and 20, the main body 31 of the conductive bracket 3 can be a plastic member, and the pad 32 can be a metal conductive member. The pad 32 and the main body 31 of the conductive bracket 3 can be integrally formed by injection molding. It is understood that by providing the pad 32 with a first pad portion 321 and a second pad portion 322 connected to each other, at least a portion of the first pad portion 321 is exposed on the first welding surface 316, and at least a portion of the second pad portion 322 is exposed on the second welding surface 317, the centering support 43 is facilitated to connect and conduct with the first pad portion 321 of the first welding surface 316, and the conductive circuit or flexible printed circuit board connected to the external circuit is facilitated to connect and conduct with the second pad portion 322 of the second welding surface 317, thereby smoothly conducting the external current through the conductive bracket 3 and the centering support 43 to the voice coil 42.

[0136] It is understood that the first soldering surface 316 may be provided with two first soldering pads 323. In this embodiment, the first soldering pad portion 321 of the soldering pad sheet 32 ​​is exposed on the first soldering surface 316 to form two first soldering pads 323 spaced apart. Optionally, the two first soldering pads 323 are spaced apart along the long axis of the magnetic circuit system 2; or, the two first soldering pads 323 are spaced apart along the short axis of the magnetic circuit system 2.

[0137] It should be noted that, as shown in FIG11 , the two first soldering pads 323 are spaced apart along the long axis of the magnetic circuit system 2. In this case, the two centering supports 43 are spaced apart along the long axis of the magnetic circuit system 2 and are respectively connected to the two first soldering pads 323. As shown in FIG10 , the two first soldering pads 323 are spaced apart along the short axis of the magnetic circuit system 2. In this case, the two centering supports 43 are spaced apart along the long axis of the magnetic circuit system 2 and are respectively connected to the two first soldering pads 323.

[0138] It is understood that the second welding surface 317 is provided with two second welding pads 324. In this embodiment, the second welding pad portion 322 of the welding pad sheet 32 ​​is exposed on the second welding surface 317 to form two second welding pads 324 spaced apart. Optionally, the two second welding pads 324 are spaced apart along the long axis of the magnetic circuit system 2; or, the two second welding pads 324 are spaced apart along the short axis of the magnetic circuit system 2.

[0139] In one embodiment, a positioning platform 211 is provided adjacent to the mounting hole 25 of the magnetic yoke 21 , and the positioning platform 211 is connected to the conductive bracket 3 .

[0140] In this embodiment, as shown in FIG. 3 to FIG. 7 , FIG. 14 and FIG. 15 , a positioning platform 211 is provided on the magnetic yoke 21 , so that the positioning platform 211 is utilized to further install, fix and position the conductive bracket 3 .

[0141] It is understood that the positioning platform 211 is provided adjacent to the mounting hole 25. Optionally, the positioning platform 211 may be a protrusion extending toward a side of the diaphragm assembly 41; or, the positioning platform 211 may be a protrusion extending toward a side away from the diaphragm assembly 41, which is not limited here.

[0142] In this embodiment, a positioning platform 211 is optionally located between the central magnetic portion 22 and the conductive bracket 3. As will be appreciated, the positioning platform 211 extends and protrudes toward one side of the diaphragm assembly 41. This ensures that the side of the magnetic yoke 21 facing away from the diaphragm assembly 41 is flat, facilitating assembly of the sound-generating device 100 in an electronic device. Furthermore, the positioning platform 211 can be used to position and limit the central magnetic portion 22 and the conductive bracket 3.

[0143] In one embodiment, as shown in Figures 3 to 7, 14, and 15, the positioning platform 211 is formed by bending the side of the magnetic yoke 21 adjacent to the mounting hole 25. In other words, the positioning platform 211 is formed by bending the side of the magnetic yoke 21 adjacent to the third through hole. It is understood that the positioning platform 211 and the magnetic yoke 21 are integrally formed. This simplifies the processing steps of the magnetic yoke 21 and improves the structural strength of the positioning platform 211. Of course, in other embodiments, the positioning platform 211 and the magnetic yoke 21 can also be provided separately, and the positioning platform 211 is connected to the magnetic yoke 21 by welding or gluing, which is not limited here.

[0144] Optionally, the positioning platform 211 is an annular boss disposed around the mounting hole 25. This arrangement effectively increases the contact area between the positioning platform 211 and the conductive bracket 3, thereby improving installation stability. Of course, in other embodiments, the positioning platform 211 includes multiple positioning platforms 211, each of which is spaced apart along the periphery of the mounting hole 25. It will be appreciated that adjacent positioning platforms 211 are spaced apart, which can reduce costs while ensuring that the conductive bracket 3 is securely mounted and positioned.

[0145] In one embodiment, the positioning platform 211 includes a first positioning portion 2111 and a second positioning portion 2112 arranged at an angle, the end of the first positioning portion 2111 away from the second positioning portion 2112 is connected to the magnetic yoke 21, and the second positioning portion 2112 extends in a direction away from the central magnetic portion 22. The conductive bracket 3 is provided with a limit platform 311, and the limit platform 311 is limitedly connected to the second positioning portion 2112.

[0146] In this embodiment, as shown in Figures 3, 4, and 15, the positioning platform 211 is set as an inverted L-shaped mechanism, so that the first positioning portion 2111 and the second positioning portion 2112 of the positioning platform 211 cooperate to form a limiting step structure, and a limiting platform 311 is set on the conductive bracket 3, so that the limiting step structure formed by the first positioning portion 2111 and the second positioning portion 2112 is used to achieve limited installation of the limiting platform 311 of the conductive bracket 3. In this way, the installation and fixation of the conductive bracket 3 can be achieved, and the installation position and installation height of the conductive bracket 3 can be ensured, thereby avoiding displacement of the conductive bracket 3.

[0147] Optionally, the mounting hole 25 is arranged in a square hole. It is understandable that the positioning platform 211 includes two or four. In this embodiment, the positioning platform 211 includes two, and the two positioning platforms 211 are arranged oppositely and correspond to two opposite edges of the mounting hole 25 respectively, which is not limited here.

[0148] In one embodiment, the conductive bracket 3 is further provided with a space-avoiding groove 312 corresponding to the positioning platform 211 , and the positioning platform 211 is accommodated in the space-avoiding groove 312 .

[0149] In this embodiment, as shown in Figures 5 to 7, 9, and 17, a clearance groove 312 is provided on the conductive bracket 3, so that the clearance groove 312 cooperates with the positioning platform 211 to achieve positioning assembly, while increasing the contact area between the conductive bracket 3 and the positioning platform 211 and improving the installation stability.

[0150] In one embodiment, one or more grooves 212 are further provided on the side of the magnetic yoke 21 facing away from the diaphragm 411 . One end of the groove 212 is connected to the mounting hole 25 , and the other end of the groove 212 extends toward the periphery of the magnetic yoke 21 . The groove 212 is used to avoid wiring.

[0151] In this embodiment, as shown in Figures 2, 5, 14 to 16, 22 and 23, a press groove 212 is provided on the magnetic yoke 21 so that one end of the press groove 212 is connected to the mounting hole 25 and the other end of the press groove 212 extends toward the periphery of the magnetic yoke 21, thereby making it convenient to use the press groove 212 for avoiding wiring.

[0152] As will be appreciated, the conductive bracket 3 of the sound-generating device 100 is connected to an external circuit via a conductive circuit or flexible circuit board. The groove 212 on the side of the magnetic yoke 21 facing away from the diaphragm assembly 41 provides routing space for the conductive circuit or flexible circuit board, and facilitates positioning and position-limiting installation of the routing structure, thereby making the overall structure more compact and saving space. In this embodiment, the groove 212 is formed by a depression on the side of the magnetic yoke 21 facing away from the diaphragm assembly 41.

[0153] Optionally, the pressing groove 212 includes a plurality of pressing grooves 212, which are spaced apart. In this embodiment, one end of the plurality of pressing grooves 212 is connected to the mounting hole 25, and the other end of the plurality of pressing grooves 212 extends toward the periphery of the guide yoke 21 and is spaced apart.

[0154] In order to improve the balance performance of the sound-generating device 100, the plurality of pressing grooves 212 are symmetrically arranged with respect to the mounting hole 25. Of course, in other embodiments, the plurality of pressing grooves 212 can optionally be radially arranged with respect to the mounting hole 25 as the center, which is not limited here.

[0155] In one embodiment, a peripheral edge of the magnetic yoke 21 is further provided with an escape notch 213 , and an end of the pressing groove 212 away from the mounting hole 25 is communicated with the escape notch 213 .

[0156] In this embodiment, as shown in Figures 16, 22, and 23, an avoidance notch 213 is provided on the periphery of the magnetic yoke 21, so that the end of the pressing groove 212 away from the mounting hole 25 is connected to the avoidance notch 213. In this way, the avoidance notch 213 can be used to further limit the assembly of structures such as conductive circuits or flexible circuit boards, thereby realizing directional wiring installation.

[0157] In one embodiment, the sound-generating device 100 further includes a connecting bracket 5 disposed in the mounting hole 25 . The connecting bracket 5 defines a fixing cavity 511 , and the conductive bracket 3 is disposed in the fixing cavity 511 .

[0158] In this embodiment, as shown in Figures 19 to 21 and 23, the conductive bracket 3 is fixedly mounted in the mounting hole 25 by the connecting bracket 5, thereby further improving the installation stability and structural strength of the conductive bracket 3. Optionally, the connecting bracket 5 is a metal stamping. As will be understood, the shape and profile of the connecting bracket 5 are substantially similar to those of the conductive bracket 3.

[0159] In one embodiment, a support groove 214 is formed around the mounting hole 25 on the side of the magnetic yoke 21 facing away from the diaphragm 411, and the connecting bracket 5 includes a main body 51 and a support 52 surrounding the main body 51. The main body 51 is provided with a fixing cavity 511, and the main body 51 is passed through the mounting hole 25. The support 52 is accommodated and confined in the support groove 214.

[0160] In this embodiment, as shown in Figures 5, 14, 16, 22 and 23, a support groove 214 is provided on the side of the magnetic yoke 21 facing away from the diaphragm assembly 41. At this time, the mounting hole 25 passes through the bottom wall of the support groove 214, thereby utilizing the support groove 214 to support and limit the installation of the connecting bracket 5.

[0161] It is understood that the main body 51 and the support 52 of the connecting bracket 5 can be formed as an integrally formed structure, which can simplify the processing steps of the connecting bracket 5 and improve the structural strength of the connecting bracket 5. Optionally, the support 52 is arranged around the periphery of the main body 51, so that when the main body 51 of the connecting bracket 5 is inserted into the mounting hole 25, the support 52 is supported and restrained within the support groove 214. In this embodiment, the fixing cavity 511 of the connecting bracket 5 can be a cavity structure with openings at both ends, which can facilitate the installation of the conductive bracket 3 and facilitate the connection of the conductive bracket 3 with the external circuit.

[0162] In this embodiment, the pressing groove 212 on the side of the magnetic yoke 21 facing away from the diaphragm assembly 41 is connected to the supporting groove 214, thereby providing installation and limiting space for the conductive circuit or flexible circuit board used to connect the conductive bracket 3 and the external circuit.

[0163] In one embodiment, as shown in Figures 19 to 21 and 23 , the connecting bracket 5 further includes a clearance notch 53 that communicates with the fixing cavity 511 . The clearance notch 53 is used to provide clearance for wiring. As will be appreciated, this arrangement allows the clearance notch 53 to provide installation and positioning space for the conductive circuitry or flexible circuit board used to connect the conductive bracket 3 to an external circuit, preventing the conductive circuitry or flexible circuit board from protruding from the side of the magnetic yoke 21 facing away from the diaphragm assembly 41, thereby making the overall structure more compact.

[0164] In one embodiment, the inner wall of the fixing cavity 511 is provided with a positioning protrusion and / or a positioning groove 54, the periphery of the conductive bracket 3 is provided with a limiting protrusion 313, the conductive bracket 3 is arranged in the fixing cavity 511, and the limiting protrusion 313 is positioned and matched with the positioning protrusion and / or positioning groove 54.

[0165] In this embodiment, as shown in Figures 20 and 21, by providing a positioning protrusion and / or positioning groove 54 on the connecting bracket 5, and providing a limiting protrusion 313 on the periphery of the conductive bracket 3, the limiting protrusion 313 is positioned and matched with the positioning protrusion and / or positioning groove 54, thereby realizing the installation, fixation and limiting function of the conductive bracket 3 and the connecting bracket 5.

[0166] In one embodiment, the central magnetic portion 22 includes a stacked central magnet 221 and a central washer 222 . The central magnet 221 is sandwiched between the central washer 222 and the magnetic yoke 21 . The mounting hole 25 passes through the magnetic yoke 21 , the central magnet 221 , and the central washer 222 in sequence.

[0167] In this embodiment, as shown in Figures 3, 4, 6 to 8, the central magnetic portion 22 is arranged as a stacked central magnet 221 and a central washer 222, so that the central magnet 221 is sandwiched between the central washer 222 and the magnetic yoke 21, and the mounting hole 25 passes through the magnetic yoke 21, the central magnet 221 and the central washer 222 in sequence. In this way, the mounting hole 25 can be effectively utilized to reduce the weight of the central magnetic portion 22. Since the magnet in the middle position of the central magnetic portion contributes less to the magnetic field strength, the conductive bracket 3 can be installed and fixed under the premise of having little impact on the magnetic field strength.

[0168] It can be understood that the center washer 222 forms a first through hole, the center magnet 221 forms a second through hole, and the magnetic yoke 21 forms a third through hole. The first through hole, the second through hole and the third through hole are connected in sequence to form the mounting hole 25.

[0169] Optionally, the central magnetic portion 22 may be provided in an annular structure, so that a through-hole structure is formed in the center of the central magnetic portion 22. Of course, in other embodiments, the central magnetic portion 22 includes a plurality of strip structures, the plurality of strip structures enclose a ring structure, and the plurality of strip structures enclose a through-hole structure, which is not limited here.

[0170] It is understood that the central magnet 221 can optionally be arranged in an annular shape, such that the second through hole is formed in the center of the central magnet 221. Of course, in other embodiments, the central magnet 221 includes multiple central magnets 221, and the multiple central magnets 221 form an annular shape to form the second through hole. The central washer 222 is arranged in an annular shape, such that the first through hole is formed in the center of the central washer 222. Of course, in other embodiments, the central washer 222 includes multiple central washers 222, and the multiple central washers 222 form an annular shape to form the first through hole, which is not limited here.

[0171] In one embodiment, a positioning boss 315 is provided on a side of the conductive bracket 3 facing away from the centering support piece 43 . The positioning boss 315 is in contact with a side of the center magnet 221 facing away from the center washer 222 .

[0172] In this embodiment, as shown in Figures 8, 9 and 17, a positioning boss 315 is provided on the periphery of the conductive bracket 3. When the conductive bracket 3 is installed in the mounting hole 25, the positioning boss 315 is used to position and abut against the side of the center magnet 221 facing away from the center washer 222, so as to achieve limited installation of the conductive bracket 3 and improve the assembly firmness of the conductive bracket 3.

[0173] In the specific embodiment shown in FIG22 , a third through-hole is defined in the magnetic yoke 21, through which the conductive bracket 3 extends into the sound-generating device 100. The conductive bracket 3 has a first sidewall and a second sidewall disposed opposite each other. One of the first and second sidewalls is provided with a positioning boss 315. The positioning boss 315 is positioned and abutted against the side of the center magnet 221 facing away from the center washer 222, while the other of the first and second sidewalls abuts or has a clearance fit with the inner wall of the third through-hole.

[0174] In one embodiment, the central magnetic portion 22 further includes an auxiliary magnet 224 . The auxiliary magnet 224 is disposed in the mounting hole 25 and located between the central magnet 221 and the conductive bracket 3 . At least part of the auxiliary magnet 224 is disposed corresponding to the centering support piece 43 .

[0175] In this embodiment, as shown in Figures 6 and 7, an auxiliary magnet 224 is provided so that the auxiliary magnet 224 is provided on the magnetic yoke 21 and is located between the central magnet 221 and the conductive bracket 3, thereby effectively increasing the magnet volume of the central magnetic part 22 and improving the magnetic field strength of the magnetic field to a certain extent, so that the auxiliary magnet 224 makes full use of the space in the mounting hole 25 of the central magnetic part 22 and improves the acoustic performance.

[0176] As will be appreciated, the provision of auxiliary magnets 224 not only increases the magnet volume of the central magnetic portion 22, thus improving acoustic performance, but also, at least a portion of the auxiliary magnets 224 are positioned in correspondence with the centering support 43, utilizing the height difference between the auxiliary magnets 224 and the center washer 222 of the central magnetic portion 22 to provide clearance or vibration space for the centering support 43. Optionally, the distance between the auxiliary magnets 224 and the diaphragm assembly 41 is greater than the distance between the central magnets 221 and the diaphragm assembly 41. This effectively ensures sufficient vibration space for the centering support 43.

[0177] Optionally, the auxiliary magnet 224 and the central magnet 221 are integrally formed. Of course, in other embodiments, the auxiliary magnet 224 and the central magnet 221 are bonded and connected, which is not limited here.

[0178] In this embodiment, the auxiliary magnet 224 is arranged in an annular shape, that is, the annular auxiliary magnet 224 is arranged around the conductive bracket 3. In this case, the central magnet 221 of the central magnetic portion 22 is connected to the auxiliary magnet 224. Of course, in other embodiments, the auxiliary magnet 224 includes multiple auxiliary magnets 224, and the multiple auxiliary magnets 224 are arranged at intervals and arranged around the conductive bracket 3. Optionally, there are two or four auxiliary magnets 224, etc., which is not limited here.

[0179] In one embodiment, a mounting groove 314 is provided on a side of the central magnet 221 and / or the conductive bracket 3 facing the auxiliary magnet 224 , and at least a portion of the auxiliary magnet 224 is confined within the mounting groove 314 .

[0180] In this embodiment, as shown in Figures 6, 7, 9, and 17, a mounting groove 314 is provided on the central magnet 221 and / or the conductive bracket 3, so that the auxiliary magnet 224 is installed and fixed by utilizing the mounting groove 314, so as to achieve the installation, fixing and limiting effects on the auxiliary magnet 224, thereby improving the installation stability.

[0181] It can be understood that the mounting groove 314 can be set on the side of the central magnet 221 facing the auxiliary magnet 224; or, the mounting groove 314 can be set on the side of the conductive bracket 3 facing the auxiliary magnet 224; or, the side of the central magnet 221 facing the auxiliary magnet 224 and the side of the conductive bracket 3 facing the auxiliary magnet 224 are both provided with mounting grooves 314.

[0182] In one embodiment, a portion of the center washer 222 is recessed in a direction away from the diaphragm assembly 41 to form an escape area 223. One end of the escape area 223 is connected to the mounting hole 25, and the other end of the escape area 223 extends toward the periphery of the center washer 222. The escape area 223 is arranged corresponding to the lead wire and / or centering support plate 43 of the voice coil 42.

[0183] In this embodiment, as shown in Figures 3, 4, 6, and 7, an avoidance area 223 is provided in the center washer 222, so that one end of the avoidance area 223 is connected to the mounting hole 25, and the other end of the avoidance area 223 extends toward the periphery of the center washer 222, so that the avoidance area 223 is arranged corresponding to the lead wire of the voice coil 42 and / or the centering support plate 43, thereby providing an avoidance space for the vibration of the lead wire of the voice coil 42 and / or the centering support plate 43.

[0184] It is understandable that the avoidance area 223 can be a through hole or notch structure penetrating the center washer 222. Of course, the avoidance area 223 can also be a groove structure formed by the center washer 222 being recessed in a direction away from the diaphragm assembly 41, which is not limited here.

[0185] In one embodiment, as shown in Figures 2 to 7, 14 to 16, 22, and 23, a positioning post 11 is provided on the periphery of the housing 1 on one side facing away from the diaphragm assembly 41. The magnetic yoke 21 is provided with a positioning notch 215 corresponding to the positioning post 11, and the positioning post 11 is positioned and matched with the positioning notch 215. It will be understood that by providing the positioning post 11 on the housing 1 and forming the positioning notch 215 on the magnetic yoke 21 to position and match the positioning post 11, the magnetic circuit system 2 is positioned and installed, thereby improving installation convenience and accuracy.

[0186] In this embodiment, as shown in Figures 3, 4, and 6 to 8, the edge magnet portion 23 includes a stacked edge magnet 231 and an edge washer 232. The edge magnet 231 is sandwiched between the edge washer 232 and the magnetic yoke 21, and the edge washer 232 is connected to the housing 1. Optionally, the edge washer 232 and the housing 1 are integrally formed, which can simplify the structure and improve installation stability.

[0187] As shown in Figures 22 and 23, the present invention also proposes a sound module 700, which includes the above-mentioned sound device 100. The specific structure of the sound device 100 refers to the aforementioned embodiment. Since the present sound module 700 adopts all the technical solutions of all the aforementioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, which will not be repeated here one by one.

[0188] In one embodiment, the sound module 700 further includes a flexible circuit board 600 , one end of the flexible circuit board 600 is electrically connected to the conductive bracket 3 of the sound device 100 , and the other end of the flexible circuit board 600 is used to connect to an external power supply.

[0189] As can be understood, the flexible circuit board 600 is used to connect the external circuit to the sound-generating device 100. The flexible circuit board 600 is provided with inner and outer pads. The inner pads of the flexible circuit board 600 are connected to the second welding surface 317 of the conductive bracket 3 of the sound-generating device 100, and the outer pads of the flexible circuit board 600 are used to connect to the external terminals.

[0190] In this embodiment, the sound module 700 further includes a module housing having a cavity. The sound device 100 is disposed within the cavity of the module housing. At least one end of the flexible circuit board 600 connected to the sound device 100 is located within the cavity of the module housing. Of course, in other embodiments, the flexible circuit board 600 may be entirely disposed within the cavity of the module housing, and this is not a limitation here.

[0191] In one embodiment, a positioning ear 610 is provided at one end of the flexible circuit board 600 adjacent to the conductive bracket 3 , and the conductive bracket 3 is formed with a positioning sidewall that is positioned and matched with the positioning ear 610 .

[0192] In this embodiment, as shown in Figure 22, by providing a positioning ear 610 on the flexible circuit board 600, the positioning ear 610 is used to limit the contact with the positioning side wall of the conductive bracket 3, so that the flexible circuit board 600 and the second welding surface 317 of the conductive bracket 3 can be connected and conducted, and the problem of poor connection between the flexible circuit board 600 and the second welding surface 317 of the conductive bracket 3 when the flexible circuit board 600 is shifted can be avoided.

[0193] To further achieve position-limited installation of the flexible circuit board 600, in one embodiment, as shown in Figures 9, 19, and 23, the conductive bracket 3 is further provided with a clearance notch 319 corresponding to the flexible circuit board 600. It is understood that the flexible circuit board 600 sequentially passes through the clearance notch 319, the avoidance notch 53, the pressure groove 212, and the avoidance notch 213; or, the flexible circuit board 600 sequentially passes through the clearance notch 319, the pressure groove 212, and the avoidance notch 213; or, the flexible circuit board 600 sequentially passes through the clearance notch 319 and the pressure groove 212. This not only achieves position-limited installation of the flexible circuit board 600, making the matching structure of the flexible circuit board 600 and the sound-generating device 100 simpler and more compact, but also serves to guide the flexible circuit board 600.

[0194] The present invention further provides an electronic device comprising the aforementioned sound-generating device 100. The specific structure of the sound-generating device 100 is similar to that of the aforementioned embodiments. Since the present electronic device utilizes all the technical solutions of all the aforementioned embodiments, it at least has all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and thus will not be described in detail here.

[0195] In this embodiment, the electronic device further includes a device housing, in which the sound generating device 100 and the flexible circuit board 600 are both disposed. It is understood that the electronic device may be a headset, a mobile phone, a computer, a tablet computer, a smart wearable device, etc., without limitation herein.

[0196] The present invention further provides an electronic device including the aforementioned sound module 700. The specific structure of the sound module 700 is similar to that of the aforementioned embodiments. Since the present electronic device utilizes all the technical solutions of all the aforementioned embodiments, it at least has all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and therefore will not be described in detail here.

[0197] It is understandable that the electronic device can be a headset, a mobile phone, a computer, a tablet computer, a smart wearable device, etc., which is not limited here. In this embodiment, the electronic device further includes a device housing, and the sound module 700 is disposed in the device housing.

[0198] The above descriptions are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A sound-generating device, characterized in that: The sound-generating device comprises: A magnetic circuit system, the magnetic circuit system comprising a magnetic yoke and a central magnetic portion and a side magnetic portion provided on the magnetic yoke, the side magnetic portion being located outside the central magnetic portion and enclosing the central magnetic portion to form a magnetic gap, and the magnetic circuit system being provided with a mounting hole penetrating the magnetic yoke and the central magnetic portion; A conductive bracket, the conductive bracket is arranged in the mounting hole; and A vibration system, the vibration system includes a diaphragm assembly, a voice coil and a centering support plate, the diaphragm assembly includes a diaphragm, a skeleton and a ball top opposite to the magnetic circuit system, an inner ring hole is provided in the center of the diaphragm, the skeleton is arranged in the inner ring hole and is connected to the diaphragm, the skeleton is provided with an assembly hole corresponding to the conductive bracket, the ball top cover is arranged in the assembly hole, one end of the voice coil is connected to the diaphragm or the skeleton, the other end of the voice coil is suspended in the magnetic gap, one end of the centering support plate is electrically connected to the conductive bracket, the other end of the centering support plate is connected to the skeleton, and is electrically connected to the lead of the voice coil.

2. The sound generating device according to claim 1, characterized in that: The frame is also provided with a connecting platform adjacent to the assembly hole and extending toward the installation hole, and one end of the centering support piece away from the conductive bracket is connected to the connecting platform.

3. The sound-generating device according to claim 2, characterized in that: The connecting platform is formed by bending or stretching one side of the frame adjacent to the assembly hole; And / or, the connecting platform is an annular boss arranged around the assembly hole; or, the connecting platform includes multiple connecting platforms, and the multiple connecting platforms are arranged at intervals along the circumference of the assembly hole; or, the connecting platform includes two connecting platforms, and the two connecting platforms are respectively arranged corresponding to the major axis direction or the minor axis direction of the magnetic circuit system.

4. The sound generating device according to claim 2, characterized in that: The connecting platform includes a first connecting arm and a second connecting arm arranged at an angle, wherein one end of the first connecting arm away from the second connecting arm is connected to the inner wall of the assembly hole, the second connecting arm extends in a direction away from the frame, and one end of the centering support plate away from the conductive bracket is connected to the second connecting arm, the first connecting arm and the frame.

5. The sound generating device according to claim 4, characterized in that: The connecting platform further includes two arc-shaped side walls, which are respectively arranged on both sides of the first connecting arm and connected to the second connecting arm and the inner wall of the assembly hole, so that the first connecting arm, the second connecting arm and the two arc-shaped side walls enclose an arc-shaped groove; And / or, the first connecting arm is connected to the inner wall of the assembly hole in a smooth transition manner; And / or, the first connecting arm is connected to the second connecting arm in a smooth transition.

6. The sound generating device according to claim 1, characterized in that: The diaphragm includes a folded ring portion, a fixing portion connected to the outer side of the folded ring portion, and an inner ring portion connected to the inner side of the folded ring portion, the inner ring portion forms the inner ring hole, the periphery of the frame is connected to the inner ring portion, and is located between the voice coil and the inner ring portion; And / or, the frame is provided with a receiving groove around the assembly hole, and the ball top limit is located in the receiving groove; And / or, a step surface is formed on the periphery of the skeleton, and a side of the diaphragm adjacent to the inner ring hole is supported and connected to the step surface, and the step surface is located between the voice coil and the diaphragm.

7. The sound generating device according to claim 1, characterized in that: The edge magnet part includes an edge magnet and an edge washer arranged on the edge magnet; The side magnets and the side washers both form a closed ring structure; or, the side magnets and the side washers are both multiple and arranged one by one, and the adjacent side magnets are connected end to end to form a closed ring structure.

8. The sound generating device according to claim 1, characterized in that: The centering support plates include a plurality of them, one end of each of the centering support plates is connected to the conductive bracket, and the other ends of each of the centering support plates are connected to the frame, and are electrically connected to the leads of the voice coil. Each of the centering support plates includes a first connection portion, an elastic arm and a second connection portion which are connected in sequence, the first connection portion is connected to the diaphragm assembly and is electrically connected to the lead of the voice coil, and the second connection portion is connected to the conductive bracket.

9. The sound-generating device according to claim 8, characterized in that: The plurality of centering arms are symmetrically distributed along the long axis direction and / or the short axis direction of the magnetic circuit system; And / or, the first connection portion and the second connection portion are located in different planes; And / or, the first connecting portion, the elastic arm and the second connecting portion are an integrally formed structure; And / or, the elastic arm has at least one bend; And / or, a side of the second connection portion facing away from the conductive support is not higher than a side surface of the magnetic circuit system facing the diaphragm assembly; And / or, a centering support is formed between the conductive bracket and the inner wall of the mounting hole to avoid the centering support Vibration space.

10. The sound generating device according to claim 1, characterized in that: The conductive bracket is provided with a first welding surface and a second welding surface which are arranged in opposite directions. The first welding surface is arranged facing the assembly hole and connected to the centering support plate. The second welding surface is used for connecting an external power supply.

11. The sound generating device according to claim 10, characterized in that: A groove is provided on a side of the conductive bracket facing away from the first welding surface, and a bottom wall of the groove forms the second welding surface; And / or, the conductive bracket includes a main body and a pad sheet, the pad sheet is embedded in the main body, the pad sheet includes a first pad portion and a second pad portion connected to each other, at least a portion of the first pad portion is exposed on the first welding surface, and at least a portion of the second pad portion is exposed on the second welding surface; And / or, the first welding surface is provided with two first welding pads, and the two first welding pads are arranged at intervals along the long axis direction or the short axis direction of the magnetic circuit system; And / or, the second welding surface is provided with two second welding pads, and the two second welding pads are arranged at intervals along the long axis direction or the short axis direction of the magnetic circuit system.

12. The sound generating device according to claim 1, characterized in that: The magnetic yoke is provided with a positioning platform adjacent to the mounting hole, and the positioning platform is connected to the conductive bracket; Wherein, the positioning platform is formed by bending one side of the magnetic yoke adjacent to the mounting hole; and / or, the positioning platform is an annular boss arranged around the mounting hole; or, the positioning platform includes multiple positioning platforms, and the multiple positioning platforms are arranged at intervals along the periphery of the mounting hole; and / or, the positioning platform is located between the central magnetic part and the conductive bracket; and / or, the positioning platform includes a first positioning part and a second positioning part arranged at an angle, the first positioning part is connected to the magnetic yoke at one end away from the second positioning part, and the second positioning part extends in a direction away from the central magnetic part, and the conductive bracket is provided with a limit platform, and the limit platform is limitedly connected to the second positioning part; and / or, the conductive bracket is also provided with a clearance groove corresponding to the positioning platform, and the positioning platform is accommodated in the clearance groove.

13. The sound generating device according to claim 1, characterized in that: One or more pressing grooves are further provided on the side of the magnetic yoke facing away from the diaphragm, one end of the pressing groove is connected to the mounting hole, and the other end of the pressing groove extends toward the periphery of the magnetic yoke, and the pressing groove is used to avoid wiring; Wherein, the pressing groove includes a plurality of times; The plurality of pressing grooves are arranged at intervals; and / or, the plurality of pressing grooves are arranged symmetrically with respect to the mounting hole; and / or, the plurality of pressing grooves are arranged radially with respect to the mounting hole as the center.

14. The sound generating device according to any one of claims 1 to 13, characterized in that: The sound-generating device further comprises a connecting bracket arranged at the mounting hole, the connecting bracket is provided with a fixing cavity, and the conductive bracket is arranged in the fixing cavity.

15. The sound generating device according to claim 14, characterized in that: A support groove is formed on one side of the magnetic yoke facing away from the diaphragm and surrounding the mounting hole, the connecting bracket includes a main body and a support platform surrounding the main body, the main body is provided with the fixing cavity, the main body is penetrated through the mounting hole, and the support platform is accommodated and limited in the support groove; And / or, the connecting bracket is further provided with a avoiding gap communicating with the fixing cavity, and the avoiding gap is used for avoiding wiring; And / or, the inner wall of the fixing cavity is provided with a positioning protrusion and / or a positioning groove, the periphery of the conductive bracket is provided with a limiting protrusion, the conductive bracket is arranged in the fixing cavity, and the limiting protrusion is positioned and matched with the positioning protrusion and / or the positioning groove; And / or, the connecting bracket is a metal stamping part.

16. A sound module, characterized in that: The sound module comprises: Module housing; The sound-generating device according to any one of claims 1 to 15, wherein the sound-generating device is disposed in the module housing; and A flexible circuit board, one end of which is electrically connected to the conductive bracket of the sound-generating device, and the other end of which is used to connect to an external power source.

17. The sound module according to claim 16, characterized in that: The flexible circuit board is provided with a positioning ear at one end adjacent to the conductive bracket, and the conductive bracket is formed with a positioning side wall that is positioned and matched with the positioning ear; And / or, the conductive bracket is further provided with a clearance gap corresponding to the flexible circuit board.

18. An electronic device, characterized in that: The electronic device comprises a sound-generating device as claimed in any one of claims 1 to 15; Or, the electronic device includes the sound module as described in claim 16 or 17.

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