Sound production device, sound production module and electronic equipment

Abstract

The invention discloses a sound production device, a sound production module and electronic equipment, and relates to the technical field of electroacoustic transduction, a magnetic circuit system of the sound production device is provided with a mounting hole penetrating through a magnetic conductive yoke and a central magnetic part, a conductive bracket is arranged in the mounting hole, and a diaphragm assembly of a vibration system comprises a vibration part, a first folding ring part and a second folding ring part, the inner side of the second folding ring part is connected with the conductive support. The two ends of the centering disk are electrically connected with a bonding pad of the conductive support and a lead of the voice coil respectively. Wherein the vibration part is provided with a convex hull part protruding in the direction away from the magnetic circuit system, and a lead of the voice coil is wired along the inner wall of the convex hull part and is electrically connected with the centering disk. According to the sound production device, the magnetic circuit system is arranged in a hollow manner and is provided with the conductive support, and the centering disk is electrically connected with the voice coil and the conductive support respectively, so that the setting volume of the edge magnetic part can be increased, the magnetic field intensity can be improved, and the BL value of a product can be increased, thereby improving the acoustic performance; in addition, the sound production device is low in magnetic flux leakage and meets the use requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of electroacoustic transducer, 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, with the rapid development of consumer electronic products, electronic devices such as smart phones and VR devices have been recognized by consumers and widely used. Those skilled in the art have also made corresponding improvements to related supporting products such as headphones to meet the performance requirements of electronic products and meet the needs of consumers for product performance.

[0003] The sound-generating device is an important electroacoustic transducer component in consumer electronic products. It is widely used as a speaker, receiver, earphone, etc. With the improvement of the performance of electronic products, the improvement of the acoustic performance of the sound-generating device is also an inevitable trend. In order to achieve better acoustic performance, the sound-generating device often needs to be equipped with a larger magnetic circuit system with stronger magnetic field strength.

[0004] In the related art, the sound-emitting device usually adopts a centering support plate structure, and the centering support plates are set at the four corners of the sound-emitting device or the short axis of the sound-emitting device, occupying part of the space of the magnetic circuit system, 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. Summary of the invention

[0005] 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 field strength of the magnetic circuit system. The sound-generating device effectively increases the magnetic field strength, increases the BL value, and thus improves the acoustic performance.

[0006] To achieve the above object, the present invention provides a sound-generating device, comprising:

[0007] 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;

[0008] A conductive bracket, the conductive bracket is arranged in the mounting hole; and

[0009] A vibration system, the vibration system comprising a diaphragm assembly, a voice coil and a centering support, the diaphragm assembly comprising a vibration part, a first folding ring part arranged outside the vibration part and a second folding ring part arranged inside the vibration part, the inner side of the second folding ring part is connected to the conductive bracket, one end of the voice coil is connected to the vibration part, the other end of the voice coil is suspended in the magnetic gap, one end of the centering support is electrically connected to the pad of the conductive bracket, and the other end of the centering support is connected to the diaphragm assembly;

[0010] The vibration part is provided with a convex part protruding in a direction away from the magnetic circuit system, and the lead wire of the voice coil is routed along the inner wall of the convex part and is electrically connected to the centering support plate.

[0011] In one embodiment, the end surface of a portion of the voice coil facing the diaphragm assembly corresponds to and is spaced from the convex portion;

[0012] And / or, the voice coil is in a rectangular ring shape, the voice coil comprises two long sides and two short sides connected end to end, the voice coil has two lead wires, and the two lead wires are respectively arranged on the two long sides or the short sides.

[0013] In one embodiment, the first folding ring portion, the vibrating portion and the second folding ring portion are an integrally formed structure; or, the vibrating portion is formed as a vibration plate, the vibration plate is respectively bonded or integrally injection-molded with the first folding ring portion and the second folding ring portion, and the material of the vibration plate is a metal material or a fiber material;

[0014] And / or, a hollow hole is provided on the inner side of the second folding ring portion, and part of the centering support piece is exposed in the hollow hole.

[0015] In one embodiment, the vibration part is formed by stamping to form the convex part, the first step surface and the second step surface, the first step surface is located at the outer periphery of the convex part and close to the magnetic circuit system, and the second step surface is located at the inner periphery of the convex part and close to the magnetic circuit system;

[0016] The inner side of the first folding ring portion extends along a direction perpendicular to the vibration direction of the vibration system to form an inner fixing portion, and the outer side of the second folding ring portion extends along a direction perpendicular to the vibration direction of the vibration system to form an outer fixing portion;

[0017] The inner fixing portion is overlapped on the first step surface and bonded to the first step surface, and the outer fixing portion is overlapped on the second step surface and bonded to the second step surface.

[0018] In one embodiment, a side of the inner fixing portion facing away from the first step surface is flush with a side of the convex portion facing away from the magnetic circuit system;

[0019] And / or, a side of the external fixing portion facing away from the second step surface is flush with a side of the convex portion facing away from the magnetic circuit system;

[0020] And / or, the second folding ring portion protrudes toward a side away from the magnetic circuit system, and the first folding ring portion protrudes toward a side close to the magnetic circuit system.

[0021] In one embodiment, the centering support plate includes a main body and a leg portion, the main body is connected to the conductive bracket and electrically connected to the pad of the conductive bracket, one end of the leg portion is connected to the main body, and the other end of the leg portion is connected to the vibration portion and electrically connected to the lead of the voice coil.

[0022] In one embodiment, the leg portions include two, and the two leg portions are symmetrically arranged;

[0023] And / or, the leg portion includes a first leg and a second leg connected to each other, the first leg extends along the short axis direction of the main body portion and is connected to the main body portion, the second leg extends along the long axis direction of the main body portion and is connected to the vibration portion, and along the vibration direction of the vibration system, the second folding ring portion is opposite to the first leg and the second leg respectively;

[0024] And / or, the main body and the leg portion are an integrally formed structure;

[0025] And / or, the main body and the leg portions are located in the same plane;

[0026] And / or, the main body is provided with a first pad, and the leg portion is provided with a second pad at one end away from the main body, the first pad is electrically connected to the pad of the conductive bracket, and the second pad is electrically connected to the lead of the voice coil.

[0027] In one embodiment, along the vibration direction of the vibration system, the second folding ring portion protrudes and extends in a direction away from the leg portion, and is arranged opposite to the leg portion.

[0028] In one embodiment, the central magnetic part is provided with a avoidance structure corresponding to the centering support piece, and the avoidance structure is connected to the mounting hole;

[0029] The avoidance structure is a groove formed by the central magnetic part being recessed toward the magnetic yoke; or, the avoidance structure is a through-hole structure penetrating the central magnetic part.

[0030] In one embodiment, the central magnetic part includes a central magnet and a central washer which are stacked, the central magnet is sandwiched between the central washer and the magnetic yoke, and the mounting hole passes through the magnetic yoke, the central magnet and the central washer in sequence;

[0031] Among them, the center washer is provided with a groove which is recessed in the direction away from the diaphragm assembly to form the avoidance structure; or, the center washer is provided with a first groove which is recessed in the direction away from the diaphragm assembly, and the center magnet is provided with a second groove which is recessed in the direction away from the diaphragm assembly, and the first groove and the second groove are connected and together form the avoidance structure.

[0032] In one embodiment, part of the center washer is recessed in a direction away from the diaphragm assembly to form a avoidance area, one end of the avoidance area is connected to the avoidance structure and / or the mounting hole, and the other end of the avoidance area extends toward the periphery of the center washer, and the avoidance area is arranged corresponding to the lead wire of the voice coil and / or the vibration part;

[0033] And / or, the central magnet is arranged in a ring shape; or, the central magnet includes a plurality of central magnets, and the plurality of central magnets are arranged in a ring shape to form the mounting hole;

[0034] And / or, the center washer is arranged in a ring shape; or, the center washer includes a plurality of center washers, and the plurality of center washers are arranged in a ring shape to form the mounting hole.

[0035] In one embodiment, the conductive support comprises:

[0036] A main body, the main body having a first welding surface and a second welding surface disposed away from each other; and

[0037] A pad sheet, the pad sheet is embedded in the main body, the pad sheet comprises 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;

[0038] Wherein, the first welding surface is connected to the centering support plate, and the second welding surface is used to connect to an external power supply.

[0039] In one embodiment, along the vibration direction of the vibration system, the first welding surface is higher than a surface of the central magnetic part facing the diaphragm assembly;

[0040] And / or, a groove is provided on a side of the main body facing away from the first welding surface, and a bottom wall of the groove forms the second welding surface;

[0041] And / or, the magnetic yoke, the main body and the pad are integrally injection molded.

[0042] In one embodiment, the edge magnet portion includes a stacked edge magnet and an edge washer, and the edge magnet is sandwiched between the magnetic yoke and the edge washer;

[0043] 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.

[0044] In one embodiment, a pressing groove is further provided on the side of the magnetic yoke facing away from the diaphragm assembly, 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.

[0045] The present invention further provides a sound module, the sound module comprising:

[0046] Module housing;

[0047] The sound-generating device described above is disposed in the module housing; and

[0048] 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.

[0049] The present invention also provides an electronic device, the electronic device comprising the above-mentioned sound-generating device;

[0050] Alternatively, the electronic device includes the sound module described above.

[0051] The sound-generating device of the technical solution of the present invention is provided with a magnetic circuit system as a magnetic yoke and a central magnetic part and a side magnetic part provided on the magnetic yoke, so that the side magnetic part is located outside the central magnetic part and encloses the central magnetic part to form a magnetic gap, and the vibration system is provided 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, so that current is passed through the voice coil, so that the voice coil converts electrical energy into mechanical energy in the magnetic gap formed by the magnetic circuit system, so as to drive the voice coil to drive the diaphragm assembly to vibrate, thereby achieving sound generation; at the same time, by A mounting hole penetrating the magnetic yoke and the central magnetic part is provided in the magnetic circuit system, and a conductive bracket is provided in the mounting hole, so that one end of the centering support is electrically connected to the pad of the conductive bracket, and the other end of the centering support is connected to the diaphragm assembly and is electrically connected to the lead of the voice coil. Therefore, the conductive bracket can be used to not only realize the installation and fixation of the centering support, but also enable the voice coil to be connected and conducted with the external circuit through the centering support and the conductive bracket. At the same time, the centering support can also effectively prevent the voice coil from swinging or polarizing, thereby improving the acoustic performance of the sound-generating device, and by using the centering support in the central magnetic part of the magnetic circuit system where the magnetic field utilization rate is low The mounting hole is arranged at the central position, which can not only reduce weight but also realize the installation and fixation of the conductive bracket. Moreover, since the centering support piece is arranged at the center of the diaphragm assembly and is connected to the conductive bracket in the mounting hole arranged in the middle of the central magnetic part, the centering support piece will not occupy the setting space of the edge magnetic part, thereby increasing the volume of the edge magnetic part; and, by arranging the diaphragm assembly as a vibration part, a first folding ring part arranged on the outside of the vibration part, and a second folding ring part arranged on the inside of the vibration part, so that the inner side of the second folding ring part is connected to the conductive bracket, the second folding ring part of the diaphragm assembly can be used to provide a space for the centering support piece. The avoidance space can reduce the avoidance made by the central magnetic part for the centering support, thereby increasing the volume of the central magnetic part, thereby improving the magnetic field strength of the magnetic circuit system, and then improving the BL value and the acoustic performance of the sound-generating device; in addition, due to the leakage phenomenon of the central position of the central magnetic part, the mounting 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 leakage of the central magnet. When the sound-generating device is assembled in an electronic device, the influence of the central magnet in the sound-generating device on the performance of the electronic device due to leakage can be reduced, and the requirements of the electronic device for leakage can be met. Furthermore, by providing a convex part protruding in the direction away from the magnetic circuit system on the vibration part, the lead of the voice coil is routed along the inner wall of the convex part and electrically connected to the centering support, so that the convex part of the vibration part is used to provide routing and avoidance space for the lead of the voice coil, making the assembly structure more compact and ensuring the vibration performance of the entire diaphragm assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0053] Figure 1 A schematic structural diagram of an embodiment of a sound-generating device provided by the present invention;

[0054] Figure 2 A schematic structural diagram of another perspective of an embodiment of a sound-generating device provided by the present invention;

[0055] Figure 3 An exploded schematic diagram of an embodiment of a sound-generating device provided by the present invention;

[0056] Figure 4 A cross-sectional schematic diagram of an embodiment of a sound-generating device provided by the present invention;

[0057] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0058] Figure 6 A cross-sectional schematic diagram of another viewing angle of an embodiment of a sound-generating device provided by the present invention;

[0059] Figure 7 for Figure 6 The enlarged schematic diagram of point B in the middle;

[0060] Figure 8 It is a schematic structural diagram of the connection between the vibration part, the voice coil and the centering support piece in one embodiment of the present invention;

[0061] Fig. 9 It is a structural schematic diagram of a center washer in one embodiment of the present invention;

[0062] Fig.10 It is a schematic structural diagram of the connection between the magnetic yoke and the conductive bracket in one embodiment of the present invention;

[0063] Fig.11 It is a cross-sectional schematic diagram of the connection between the magnetic yoke and the conductive bracket in one embodiment of the present invention;

[0064] Fig.12 It is a schematic structural diagram of a conductive bracket in one embodiment of the present invention;

[0065] Fig.13 is a cross-sectional schematic diagram of a conductive bracket in one embodiment of the present invention;

[0066] Fig.14is an exploded schematic diagram of a diaphragm assembly in one embodiment of the present invention;

[0067] Fig.15 Schematic diagram of the structure of a centering support piece in one embodiment of the present invention.

[0068] Description of Figure Numbers:

[0069] 100. Sounding device; 1. Shell; 2. Magnetic circuit system; 21. Magnetic yoke; 211. Positioning platform; 212. Pressing groove; 213. Avoidance gap; 22. Center magnetic part; 221. Center magnet; 222. Center washer; 223. Avoidance area; 224. Avoidance structure; 23. Side magnetic part; 231. Side magnet; 232. Side washer; 24. Magnetic gap; 25. Mounting hole; 3. Conductive bracket; 31. Main body; 311. First welding surface; 312. Second welding surface; 313. Groove; 314. Positioning groove; 315. First connecting part; 316. Second connecting part; 317. Avoidance space; 32. Solder pad ; 321, first pad portion; 322, second pad portion; 4, vibration system; 41, diaphragm assembly; 411, vibration portion; 4111, first step surface; 4112, second step surface; 4113, convex portion; 412, first folding ring portion; 4121, inner fixing portion; 4122, fixing portion; 413, second folding ring portion; 4131, outer fixing portion; 4132, hollow hole; 42, voice coil; 421, long side; 422, short side; 43, centering support plate; 431, main body; 4311, first pad; 432, leg portion; 4321, first leg; 4322, second leg; 4323, second pad.

[0070] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0071] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0072] 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 components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0073] 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 a option in which both A and B are satisfied.

[0074] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot 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 the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0075] The present invention provides a sound-generating device 100. It is understandable that the sound-generating device 100 is applied to an electronic device, and the electronic device may be a smart watch, a mobile phone, a speaker, a computer, a headset, or a television, etc., which is not limited here.

[0076] Please refer to Figures 1 to 15 As shown, in the 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. The magnetic circuit system 2 includes a magnetic yoke 21 and a central magnetic portion 22 and a side magnetic portion 23 arranged on the magnetic yoke 21. The side magnetic portion 23 is located outside the central magnetic portion 22 and is surrounded by the central magnetic portion 22 to form a magnetic gap 24. The magnetic circuit system 2 is provided with a mounting hole 25 that passes through the magnetic yoke 21 and the central magnetic portion 22. The conductive bracket 3 is arranged 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 a vibration portion 411, a voice coil 42 and a centering support 43. The diaphragm assembly 41 includes a vibration portion 411, a voice coil 42 and a centering support 43. 11 and a first folding ring portion 412 on the outer side of the vibration portion 411 and a second folding ring portion 413 on the inner side of the vibration portion 411, the inner side of the second folding ring portion 413 is connected to the conductive bracket 3, one end of the voice coil 42 is connected to the vibration portion 411, 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 pad of the conductive bracket 3, and the other end of the centering support piece 43 is connected to the diaphragm assembly 41; wherein the vibration portion 411 is provided with a convex portion 4113 protruding in a direction away from the magnetic circuit system 2, the lead of the voice coil 42 is routed along the inner wall of the convex portion 4113, and is electrically connected to the centering support piece 43.

[0077] In this embodiment, the sound-generating device 100 may be a sound-generating unit of a speaker, and the speaker may be a micro speaker. It should be noted that the magnetic circuit system 2 and the vibration system 4 of the sound-generating device 100 are arranged opposite to each other.

[0078] Optionally, the magnetic circuit system 2 is arranged in a square shape. For example, the magnetic circuit system 2 may include a central magnetic portion 22 and a side magnetic portion 23, both of which are square structures. In this embodiment, the vibration system 4 is optionally 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 housing, etc., which is not limited here.

[0079] 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 Figures 1 to 4 , Figure 6 As shown, the sound-generating device 100 also includes a shell 1, a magnetic circuit system 2 connected to one end of the shell 1, and a vibration system 4 connected to the other end of the shell 1 and 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 arranged opposite to the magnetic circuit system 2.

[0080] 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 selected as 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 a vibration cavity.

[0081] It can be understood that the sound-generating device 100 is applied to electronic devices, 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 disassembly and assembly. Of course, the housing 1 of the sound-generating device 100 can also be an integrally formed structure with the housing or box structure of the electronic device, which can effectively improve the structural strength and sealing performance.

[0082] In this embodiment, the housing 1 is used to accommodate and fix the vibration system 4 and the magnetic circuit system 2 and other structures, so that the sound 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 device 100 can also be a module structure, in which case the vibration system 4 and the magnetic circuit system 2 and other structures of the sound unit are installed as multiple independent components on the housing 1 of the module structure, which is not limited here.

[0083] It can be understood that by setting the magnetic circuit system 2 as a magnetic yoke 21 and a central magnetic part 22 and a side magnetic part 23 provided on the magnetic yoke 21, the magnetic circuit system 2 can be connected to the housing 1 through the periphery of the magnetic yoke 21; or, the magnetic circuit system 2 can be connected to the housing 1 through the side magnetic part 23, which is not limited here. In this embodiment, the side magnetic part 23 is arranged outside the central magnetic part 22, and is enclosed with the central magnetic part 22 to form a magnetic gap 24, so that the diaphragm assembly 41 of the vibration system 4 is connected to the end of the housing 1 away from the magnetic yoke 21, and is opposite to and spaced from 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, so that current is passed into the voice coil 42, so that the voice coil 42 converts electrical energy into mechanical energy in the magnetic gap 24 formed by the magnetic circuit system 2, so as to drive the voice coil 42 to drive the diaphragm assembly 41 to vibrate, thereby achieving sound generation.

[0084] In order to realize the electrical connection between the voice coil 42 and the external circuit, the sound-generating device 100 in the related art usually adopts a centering support plate 43 structure, and the two ends of the centering support plate 43 are electrically connected to the voice coil 42 lead and the external circuit respectively. In the related art, the centering support plate 43 is usually set at the four corners of the sound-generating device 100 or the short axis of the sound-generating device 100, that is, the avoidance space is set at the four corners or the short axis of the magnetic circuit system 2 to provide installation space or installation position for the centering support plate 43. In this way, the centering support plate 43 will occupy part of the space of the magnetic circuit system 2, resulting in the size of the side magnet 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-generating device 100.

[0085] In this embodiment, a mounting hole 25 penetrating the magnetic yoke 21 and the central magnetic portion 22 is provided in the magnetic circuit system 2, and a conductive bracket 3 is provided in the mounting hole 25, so that one end of the centering support plate 43 is electrically connected to the pad of the conductive bracket 3, and the other end of the centering support plate 43 is connected to the diaphragm assembly 41 and is 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 plate 43, and the centering support plate 43 is used to center the vibration of the voice coil 42, so as to prevent the voice coil 42 from swinging or polarizing during the vibration process, so as to improve the sound effect and acoustic performance of the sound-generating device 100.

[0086] It should be noted that 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 of 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 2, both weight reduction and installation and fixation of the conductive bracket 3 can be achieved; moreover, since the centering support plate 43 is arranged in the center of the diaphragm assembly 41 and is connected to the conductive bracket 3 in the mounting hole 25 arranged in the middle of the central magnetic part 22, the centering support plate 43 will not occupy the setting space of the side magnetic part 23, thereby increasing the volume of the side magnetic part 23, and improving the magnetic field strength of the magnetic circuit system 2, thereby improving the BL value and improving the acoustic performance of the sound-generating device 100. In addition, due to the phenomenon of magnetic leakage in the central position of the central magnetic part 22, the mounting hole 25 needs to be formed by removing at least a portion of the central magnet 221 in the central position of the central magnetic part 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.

[0087] 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, a triangular hole, etc., which can be selected and set according to actual needs and is not limited here. In this embodiment, a through hole structure is formed in the center of the central magnetic part 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 part 22. At this time, the through hole structure of the central magnetic part 22 is connected to the third through hole of the magnetic yoke 21 to form a mounting hole 25.

[0088] In this embodiment, the first folding ring portion 412 and the second folding ring portion 413 are recessed in opposite directions. Optionally, the second folding ring portion 413 protrudes toward a side away from the magnetic circuit system 2 , and the first folding ring portion 412 protrudes toward a side close to the magnetic circuit system 2 .

[0089] It can be understood that by setting the diaphragm assembly 41 as a vibration part 411, a first folding ring part 412 arranged on the outside of the vibration part 411, and a second folding ring part 413 arranged on the inside of the vibration part 411, and the first folding ring part 412 and the second folding ring part 413 are recessed in opposite directions, the inner side of the second folding ring part 413 is connected to the conductive bracket 3, and the recessed directions of the first folding ring part 412 and the second folding ring part 413 are opposite, so that the second folding ring part 413 protrudes toward the side away from the magnetic circuit system 2, so that the second folding ring part 413 of the diaphragm assembly 41 can be used to provide an avoidance space for the centering support plate 43, so that the avoidance made by the central magnetic part 22 for the centering support plate 43 can be reduced, thereby increasing the volume of the central magnetic part 22, further improving the magnetic field strength of the magnetic circuit system 2, and then the BL value can be improved, thereby improving the acoustic performance of the sound-emitting device 100.

[0090] In one embodiment, if Figure 1 , Figures 3 to 7 As shown, the vibration part 411 is provided with a convex portion 4113 protruding in a direction away from the magnetic circuit system 2 , and the lead wire of the voice coil 42 is routed along the inner wall of the convex portion 4113 and is electrically connected to the centering support piece 43 .

[0091] It can be understood that the convex portion 4113 of the vibration portion 411 provides a routing and avoidance space for the lead wire of the voice coil 42, thereby making the assembly structure more compact, saving vibration space, and ensuring the vibration performance of the entire diaphragm assembly 41. Optionally, the end surface of a part of the voice coil 42 facing the diaphragm assembly 41 corresponds to and is spaced from the convex portion 4113.

[0092] The sound-generating device 100 of the present invention is provided 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 is enclosed with the central magnetic portion 22 to form a magnetic gap 24, and configuring the vibration system 4 as a diaphragm assembly 41, a voice coil 42 and a centering support plate 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, so that current is passed through the voice coil 42, so that the voice coil 42 converts electrical energy into mechanical energy in the magnetic gap 24 formed by the magnetic circuit system 2 to drive the sound. The coil 42 drives the diaphragm assembly 41 to vibrate, thereby achieving sound generation; at the same time, by providing a mounting hole 25 that passes through the magnetic yoke 21 and the central magnetic part 22 in the magnetic circuit system 2, and arranging a conductive bracket 3 in the mounting hole 25, one end of the centering support piece 43 is electrically connected to the pad of the conductive bracket 3, and the other end of the centering support piece 43 is connected to the diaphragm assembly 41 and is electrically connected to the lead wire of the voice coil 42, so that the conductive bracket 3 can be used to not only realize the installation and fixation of the centering support piece 43, but also enable the voice coil 42 to be connected and conducted with the external circuit through the centering support piece 43 and the conductive bracket 3, and at the same time, the centering support piece 43 can also effectively prevent the voice coil 42 from The acoustic performance of the sound-generating device 100 is improved by swinging or polarizing, and 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, it is possible to achieve weight reduction and the installation and fixation of the conductive bracket 3. Moreover, since the centering support piece 43 is arranged at the center of the diaphragm assembly 41 and is connected to the conductive bracket 3 in the mounting hole 25 arranged in the middle of the central magnetic part 22, the centering support piece 43 does not occupy the setting space of the edge magnetic part 23, thereby increasing the volume of the edge magnetic part 23; and, by setting the diaphragm assembly 41 as the vibration part 411 and the first folding ring part 4 arranged outside the vibration part 411 12 and a second folding ring portion 413 arranged on the inner side of the vibration portion 411, and the first folding ring portion 412 and the second folding ring portion 413 are recessed in opposite directions, so that the second folding ring portion 413 protrudes toward the side away from the magnetic circuit system 2, and the inner side of the second folding ring portion 413 is connected to the conductive bracket 3, so that the second folding ring portion 413 of the diaphragm assembly 41 can be used to provide an escape space for the centering support piece 43, so that the escape made by the central magnetic portion 22 for the centering support piece 43 can be reduced, thereby increasing the volume of the central magnetic portion 22, thereby improving the magnetic field strength of the magnetic circuit system 2, and then the BL value can be improved, thereby improving the acoustic performance of the sound-generating device 100. In addition, due to the phenomenon of magnetic leakage in the central position of the central magnetic part 22, the mounting hole 25 needs to be formed by removing at least a portion of the central magnet 221 in the central position of the central magnetic part 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.Furthermore, by providing the vibration part 411 with a convex portion 4113 protruding in a direction away from the magnetic circuit system 2, the lead of the voice coil 42 is routed along the inner wall of the convex portion 4113 and is electrically connected to the centering support plate 43, so that the convex portion 4113 of the vibration part 411 is utilized to provide routing and avoidance space for the lead of the voice coil 42, making the assembly structure more compact, saving vibration space, and ensuring the vibration performance of the entire diaphragm assembly 41 at the same time.

[0093] In one embodiment, the edge magnetic part 23 may be optionally arranged in a closed ring shape, in which case the annular edge magnetic part 23 is located outside the central magnetic part 22 and is spaced apart from the central magnetic part 22 to form a magnetic gap 24. It can be understood that since the centering support piece 43 is arranged in the center of the diaphragm assembly 41 and is connected to the conductive bracket 3 in the mounting hole 25 arranged in the middle of the central magnetic part 22, the centering support piece 43 will not occupy the setting space of the edge magnetic part 23, so that the setting volume of the edge magnetic part 23 can be increased to improve the magnetic field strength of the magnetic circuit system 2, and then the BL value can be improved, thereby improving the acoustic performance of the sound-generating device 100.

[0094] Of course, in other embodiments, the edge magnetic portion 23 includes multiple edge magnetic portions 23, which are arranged around the outside of the central magnetic portion 22 and are spaced apart from the central magnetic portion 22 to form a magnetic gap 24, and adjacent edge magnetic portions 23 are connected end to end to form a closed ring structure, which is not limited here.

[0095] In one embodiment, if Figures 3 to 7 As shown, the edge magnet part 23 includes a stacked edge magnet 231 and an edge washer 232, and the edge magnet 231 is sandwiched between the magnetic yoke 21 and the edge washer 232. In this embodiment, the edge magnet 231 can be a permanent magnet, and the edge washer 232 can be a magnetic plate structure, which is not limited here.

[0096] Optionally, the side magnets 231 and the side washers 232 both form a closed annular structure. In this case, the side magnet portion 23 forms a closed annular structure and is arranged around the outside of the central magnetic portion 22. Of course, in other embodiments, the side magnets 231 and the side washers 232 are both multiple and arranged one by one. Adjacent side magnets 231 are connected end to end to form a closed annular structure, and adjacent side washers 232 are connected end to end to form a closed annular structure. In this case, the side magnet portion 23 includes multiple side magnet portions 23, and multiple side magnet portions 23 are connected end to end to form a closed annular structure, which is not limited here.

[0097] It should be noted that the centering support plate 43 in the present invention is arranged in the center of the diaphragm assembly 41 and is connected to the conductive bracket 3 in the mounting hole 25 arranged 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 side magnetic part 23, and there is no need to set a accommodating space for the centering support plate 43 between two adjacent side magnets 231, so that the side magnets 231 can be set into a closed ring structure, thereby increasing the setting volume of the side magnets 231, improving the magnetic field strength of the magnetic circuit system 2, and then improving the BL value.

[0098] In one embodiment, the first folding ring portion 412, the vibration portion 411, and the second folding ring portion 413 of the diaphragm assembly 41 may be an integrally formed structure, thereby ensuring the vibration performance and structural strength of the diaphragm assembly 41. For example, the first folding ring portion 412, the vibration portion 411, and the second folding ring portion 413 of the diaphragm assembly 41 may be made of the same material to form an integrally formed structure, which may be selected and set according to actual usage requirements. In this embodiment, the first folding ring portion 412 and the second folding ring portion 413 are convex structures that protrude upward or concave structures that are concave downward, which are not limited here.

[0099] In one embodiment, the vibration part 411 is formed as a vibration plate. Optionally, the vibration plate is made of metal material or fiber material. In this embodiment, the vibration plate is respectively bonded or integrally injection-molded with the first folding ring part 412 and the second folding ring part 413 .

[0100] In one embodiment, if Figure 1 , Figures 3 to 8 As shown, the vibration part 411 is formed by stamping to form a convex part 4113, a first step surface 4111 and a second step surface 4112, the first step surface 4111 is located at the outer periphery of the convex part 4113 and is close to the magnetic circuit system 2, and the second step surface 4112 is located at the inner periphery of the convex part 4113 and is close to the magnetic circuit system 2; the inner side of the first folded ring part 412 extends along a vibration direction perpendicular to the vibration system 4 to form an inner fixed part 4121, and the outer side of the second folded ring part 413 extends along a vibration direction perpendicular to the vibration system 4 to form an outer fixed part 4131; wherein, the inner fixed part 4121 overlaps the first step surface 4111 and is bonded to the first step surface 4111, and the outer fixed part 4131 overlaps the second step surface 4112 and is bonded to the second step surface 4112.

[0101] In this embodiment, the outer periphery of the vibration part 411 forms a first step surface 4111, and the inner periphery of the vibration part 411 forms a second step surface 4112. The vibration part 411 is bonded to the first folding ring part 412 and the second folding ring part 413, respectively.

[0102] It can be understood that by forming a first step surface 4111 on the outer periphery of the vibration part 411, the first step surface 4111 is recessed in the direction close to the magnetic circuit system 2, thereby ensuring that the inner fixing part 4121 of the first folding ring part 412 overlaps the first step surface 4111 and is bonded to the first step surface 4111. The side of the inner fixing part 4121 facing away from the first step surface 4111 is flush with the side of the convex part 4113 facing away from the magnetic circuit system 2, thereby making the assembly structure more compact and ensuring the vibration performance of the entire diaphragm assembly 41. At the same time, by forming a second step surface 4112 on the inner periphery of the vibrating portion 411, the second step surface 4112 is recessed in the direction close to the magnetic circuit system 2, thereby ensuring that the outer fixing portion 4131 of the second folding ring portion 413 is overlapped with the second step surface 4112 and bonded to the second step surface 4112. The side of the outer fixing portion 4131 facing away from the second step surface 4112 is flush with the side of the convex portion 4113 facing away from the magnetic circuit system 2, thereby making the assembly structure more compact and saving vibration space.

[0103] In this embodiment, if Figure 1 , Figures 3 to 7 As shown, the vibration part 411 is formed by stamping to form a convex part 4113, a first step surface 4111 and a second step surface 4112. The first step surface 4111 is located at the outer periphery of the convex part 4113 and is close to the magnetic circuit system 2. The second step surface 4112 is located at the inner periphery of the convex part 4113 and is close to the magnetic circuit system 2.

[0104] Optionally, the voice coil 42 is in a rectangular ring shape, and includes two long sides 421 and two short sides 422 connected end to end. The voice coil 42 has two leads, and the two leads are respectively arranged on the two long sides 421 or the short sides 422. In this embodiment, the convex portion 4113 of the vibration portion 411 corresponds to the two leads arranged on the two long sides 421 or the short sides 422 of the voice coil 42, which is not limited here.

[0105] In one embodiment, the diaphragm assembly 41 may be a ring structure. Figure 1 , Figure 3 , Figure 4 , Figure 6 and Fig.14 As shown, a hollow hole 4132 is provided on the inner side of the second folding ring portion 413 , and a portion of the centering support piece 43 is exposed in the hollow hole 4132 .

[0106] It can be understood that by setting a hollow hole 4132 at the central position of the diaphragm assembly 41, a part of the centering support plate 43 is exposed in the hollow hole 4132, so that the hollow hole 4132 is used to dissipate heat for the centering support plate 43 and the conductive bracket 3, so as to improve the service life of the diaphragm assembly 41, the centering support plate 43 and the conductive bracket 3.

[0107] In one embodiment, if Figures 1 to 4 , Figure 6 As shown, the outer side of the first folding ring portion 412 of the diaphragm assembly 41 extends perpendicularly to the vibration direction of the vibration system 4 to form a fixing portion, and the fixing portion is connected and fixed to the housing 1 .

[0108] It can be understood that in order to further increase the connection area between the diaphragm assembly 41 and the housing 1 and improve stability, one end of the fixing portion away from the first folding ring portion 412 is bent and extended toward the housing 1 to form a bent portion, and the bent portion is connected to the outer wall of the housing 1. By bending downward on the outer side of the fixing portion to form a bent portion, the bent portion is connected to the outer wall of the housing 1, thereby increasing the connection area with the housing 1 and improving the connection stability and sealing performance.

[0109] In order to further strengthen the structural strength of the vibration part 411 of the diaphragm assembly 41, in one embodiment, the diaphragm assembly 41 further includes a reinforcement part, which is provided on the vibration part 411. It can be understood that by providing the reinforcement part, the structural strength of the vibration part 411 can be effectively strengthened, thereby improving the connection stability of the voice coil 42, and preventing the diaphragm assembly 41 from tearing when the voice coil 42 drives the diaphragm assembly 41 to vibrate.

[0110] In one embodiment, the centering support plate 43 includes a main body 431 and a leg portion 432, the main body 431 is connected to the conductive bracket 3 and electrically connected to the pad of the conductive bracket 3, one end of the leg portion 432 is connected to the main body 431, and the other end of the leg portion 432 is connected to the vibration portion 411 and electrically connected to the lead of the voice coil 42.

[0111] In this embodiment, if Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8 , Figures 10 to 15 As shown, the main body 431 of the centering support 43 is fixed to the end of the conductive support 3 away from the magnetic yoke 21, and at least part of the main body 431 is exposed in the hollow hole 4132. Optionally, the main body 431 of the centering support 43 is located between the conductive support 3 and the inner side of the second folding ring 413 of the diaphragm assembly 41.

[0112] It can be understood that the leg portion 432 is opposite to the second folding ring portion 413 of the diaphragm assembly 41. Optionally, along the vibration direction of the vibration system 4, the second folding ring portion 413 protrudes and extends in a direction away from the leg portion 432, and is arranged opposite to the leg portion 432. In this way, a vibration and avoidance space is provided for the leg portion 432 of the centering support piece 43, thereby reducing the avoidance made by the central magnetic portion 22 for the centering support piece 43, increasing the volume of the central magnetic portion 22, and improving the magnetic field strength of the magnetic circuit system 2, thereby improving the BL value and improving the acoustic performance of the sound-generating device 100.

[0113] Optionally, the main body 431 and the leg portion 432 are integrally formed. This can effectively simplify the processing steps of the centering support piece 43 and improve the structural strength of the centering support piece 43. In this embodiment, the main body 431 and the leg portion 432 are optionally located in the same plane, which can ensure the structural strength of the centering support piece 43.

[0114] In one embodiment, if Figure 3 , Figure 8 and Fig.15 As shown, the main body 431 is provided with a first pad 4311 , and the leg 432 is provided with a second pad 4323 at one end away from the main body 431 . The first pad 4311 is electrically connected to the pad of the conductive bracket 3 , and the second pad 4323 is electrically connected to the lead of the voice coil 42 .

[0115] It can be understood that such a configuration can ensure that the voice coil 42 is connected and conducted with the conductive bracket 3 through the centering support 43. Optionally, the first pad 4311 of the main body 431 is exposed in the hollow hole 4132, thereby achieving heat dissipation. In this embodiment, the second pad 4323 is correspondingly connected to the second step surface 4112 of the vibration part 411.

[0116] In one embodiment, if Figure 3 , Figure 8 and Fig.15 As shown, the leg portions 432 include two, and the two leg portions 432 are symmetrically arranged. In this embodiment, the voice coil 42 has two leads, which are an input lead and an output lead respectively. By providing two leg portions 432 of the centering support 43, the two leads can be connected and conducted with the two leg portions 432 respectively, so that current can be passed into the voice coil 42. Optionally, the two leg portions 432 of the centering support 43 are symmetrically arranged.

[0117] In one embodiment, if Figure 3 and Figure 8 As shown, the voice coil 42 may be in a rectangular ring shape, and the voice coil 42 includes two long sides 421 and two short sides 422 connected end to end. In this embodiment, the voice coil 42 has two leads. Optionally, the two leads are respectively arranged on the two long sides 421 or the short sides 422. The centering support plate 43 includes two leg portions 432, which are symmetrically arranged, and each leg portion 432 corresponds to a lead and is electrically connected.

[0118] In one embodiment, the leg portion 432 includes a first leg 4321 and a second leg 4322 connected to each other, the first leg 4321 extends along the short axis direction of the main body 431 and is connected to the main body 431, and the second leg 4322 extends along the long axis direction of the main body 431 and is connected to the vibration portion 411.

[0119] In this embodiment, if Figure 3 , Figure 8 and Fig.15 As shown, by configuring the leg portion 432 to be a first leg 4321 extending along the short axis direction of the main body 431 and a second leg 4322 extending along the long axis direction of the main body 431, not only the leg portion 432 of the centering support piece 43 has good deformation capability, but also the leg portion 432 can be extended to be connected to the lead wire of the voice coil 42. Optionally, a second pad 4323 is provided at one end of the second leg 4322 away from the first leg 4321.

[0120] It can be understood that along the vibration direction of the vibration system 4, the second folding ring portion 413 is respectively opposite to the first leg 4321 and the second leg 4322. Therefore, the second folding ring portion 413 of the diaphragm assembly 41 can avoid the first leg 4321 and the second leg 4322 of the centering support plate 43, thereby reducing the avoidance made by the central magnetic portion 22 for the first leg 4321 and the second leg 4322, increasing the magnetic field strength of the central magnetic portion 22, and further improving the BL value, thereby improving the acoustic performance of the sound-generating device 100.

[0121] Optionally, the leg portion 432 includes a plurality of first legs 4321 and a plurality of second legs 4322, and the plurality of first legs 4321 and the plurality of second legs 4322 are alternately arranged. It can be understood that such an arrangement can ensure that when the two lead wires are respectively arranged on the two long sides 421 or the short sides 422 of the voice coil 42, they can also be smoothly connected to the leg portion 432, and can ensure that the leg portion 432 of the centering support piece 43 has good deformation ability.

[0122] In one embodiment, the central magnetic portion 22 is provided with a avoidance structure 224 corresponding to the centering support piece 43 , and the avoidance structure 224 is connected to the mounting hole 25 .

[0123] In this embodiment, if Figure 3 , Fig. 9 As shown, by providing a avoidance structure 224 on the central magnetic part 22, the avoidance structure 224 corresponds to the centering support piece 43, thereby further ensuring the deformation vibration space of the centering support piece 43, avoiding the centering support piece 43 from interfering with the central magnetic part 22 during the vibration process, thereby affecting the sound performance of the sound device 100. Optionally, the avoidance structure 224 corresponds to the leg portion 432 of the centering support piece 43.

[0124] Optionally, the avoidance structure 224 is a groove 313 formed by the central magnetic part 22 being recessed toward the magnetic guide yoke 21. Of course, in other embodiments, the avoidance structure 224 is a through-hole structure penetrating the central magnetic part 22, which is not limited here. In this embodiment, the avoidance structure 224 is connected to the mounting hole 25, so that the deformation and vibration space of the leg part 432 of the centering support piece 43 can be ensured.

[0125] 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 , and the mounting hole 25 passes through the magnetic yoke 21 , the central magnet 221 and the central washer 222 in sequence.

[0126] In this embodiment, if Figures 3 to 7 As shown, by setting the central magnetic part 22 as 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, 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 part 22. Since the magnet in the middle position of the central magnetic part 22 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.

[0127] It can be understood that the center washer 222 forms a first through hole, the center magnet 221 forms a second through hole, the magnetic yoke 21 forms a third through hole, and the first through hole, the second through hole and the third through hole are connected in sequence to form a mounting hole 25.

[0128] Optionally, the central magnetic portion 22 may be arranged 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, and the plurality of strip structures are enclosed to form an annular structure, so that the plurality of strip structures are enclosed to form a through-hole structure, which is not limited here.

[0129] It is understandable that the center magnet 221 is optionally arranged in an annular shape, so that a second through hole is formed in the center of the center magnet 221. Of course, in other embodiments, the center magnet 221 includes multiple center magnets 221, and multiple center magnets 221 are arranged in an annular shape to form a mounting hole 25, that is, multiple center magnets 221 are arranged in an annular shape to form a second through hole. The center washer 222 is arranged in an annular shape, so that a first through hole is formed in the center of the center washer 222. Of course, in other embodiments, the center washer 222 includes multiple center washers 222, and multiple center washers 222 are arranged in an annular shape to form a mounting hole 25, that is, multiple center washers 222 are arranged in an annular shape to form a first through hole, which is not limited here.

[0130] In one embodiment, the center washer 222 is provided with a groove that is recessed in a direction away from the diaphragm assembly 41 to form a avoidance structure 224 for avoiding the centering support piece 43. It can be understood that by providing a groove on the center washer 222 of the central magnetic part 22 or a through hole penetrating the center washer 222 to form the avoidance structure 224, the avoidance structure 224 can be used to provide a deformation vibration space for the leg portion 432 of the centering support piece 43, thereby ensuring the sound effect of the sound-generating device 100.

[0131] In another embodiment, Figure 3 As shown, the center washer 222 is provided with a first groove recessed in a direction away from the diaphragm assembly 41, and the center magnet 221 is provided with a second groove recessed in a direction away from the diaphragm assembly 41. The first groove and the second groove are connected and together form an avoidance structure 224 for avoiding the centering support plate 43.

[0132] In this embodiment, the first groove may be a groove sunken in the center washer 222 or a through-hole structure penetrating the center washer 222. Optionally, at least part of the first groove is a through-hole structure penetrating the center washer 222. The second groove may be a groove sunken in the center magnet 221 or a through-hole structure penetrating the center magnet 221. Optionally, at least part of the first groove is connected to the second groove and together forms an avoidance structure 224, so that a deformation vibration space can be provided for the leg portion 432 of the centering support plate 43, thereby ensuring the sound effect of the sound-generating device 100.

[0133] Optionally, part of the center washer 222 is recessed in a direction away from the diaphragm assembly 41 to form an avoidance area 223, one end of the avoidance area 223 is connected to the avoidance structure 224 and / or the mounting hole 25, and the other end of the avoidance area 223 extends toward the periphery of the center washer 222, and the avoidance area 223 is set corresponding to the lead and / or vibration part 411 of the voice coil 42.

[0134] In one embodiment, a portion of the center washer 222 is recessed in a direction away from the diaphragm assembly 41 to form an avoidance area 223. One end of the avoidance area 223 is connected to the avoidance structure 224, and the other end of the avoidance area 223 extends toward the periphery of the center washer 222. The avoidance area 223 is arranged corresponding to the lead and / or vibration part 411 of the voice coil 42.

[0135] In this embodiment, if Figure 3 and Fig. 9 As shown, by setting the avoidance area 223 on the center washer 222, the avoidance area 223 is set corresponding to the lead wire and / or the vibration part 411 of the voice coil 42, thereby providing sufficient vibration space for the lead wire and / or the vibration part 411 of the voice coil 42 and the centering support plate 43. Optionally, the avoidance area 223 is set corresponding to the second step surface 4112 of the lead wire and / or the vibration part 411 of the voice coil 42.

[0136] It can be understood that one end of the avoidance area 223 is connected to the avoidance structure 224 and / or the mounting hole 25, and the other end of the avoidance area 223 extends toward the periphery of the center washer 222. Optionally, the avoidance area 223 is 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. Of course, in other embodiments, the avoidance area 223 can be a through hole or notch structure that passes through the center washer 222, which is not limited here.

[0137] In one embodiment, the conductive bracket 3 includes a main body 31 and a pad sheet 32, the main body 31 is provided with a first welding surface 311 and a second welding surface 312 which are arranged opposite to each other, the pad sheet 32 ​​is embedded in the main body 31, and the pad sheet 32 ​​includes a first pad portion 321 and a second pad portion 322 which are connected to each other, at least a portion of the first pad portion 321 is exposed on the first welding surface 311, and at least a portion of the second pad portion 322 is exposed on the second welding surface 312; wherein the first welding surface 311 is connected to the centering support sheet 43, and the second welding surface 312 is used to connect an external power supply.

[0138] Alternatively, if Figure 4 , Figure 6 , Fig.11 , Fig.13 As shown, the main body 31 of the conductive bracket 3 can be a plastic part, and the pad piece 32 can be a metal conductive part. Optionally, the pad piece 32 and the main body 31 of the conductive bracket 3 can be integrally formed by injection molding.

[0139] In this embodiment, if Figure 3 , Figure 4 , Figure 6 , Figures 10 to 13 As shown, a first welding surface 311 is formed on the side of the conductive bracket 3 facing the centering support plate 43, and a second welding surface 312 is provided on the side of the conductive bracket 3 facing away from the first welding surface 311. In this way, the first welding surface 311 can be used to connect and conduct with the centering support plate 43, and the second welding surface 312 can be used to connect with an external power supply, so that the conductive bracket 3 connects and conducts with the external circuit and the centering support plate 43 to supply power to the voice coil 42.

[0140] It can be understood that the main body 431 of the centering support piece 43 is fixed to the first welding surface 311 , and the first welding pad 4311 is connected and conductive to the first welding surface 311 .

[0141] Optionally, along the vibration direction of the vibration system 4, the first welding surface 311 is higher than the side surface of the central magnetic part 22 facing the diaphragm assembly 41. In this way, a space for the vibration of the centering support 43 is formed between the first welding surface 311 of the conductive bracket 3 and the central magnetic part 22, and the second folding ring part 413 of the diaphragm assembly 41 provides a vibration space for the centering support 43, which can facilitate the installation of the centering support 43 without affecting the diaphragm assembly 41, and ensure that the centering support 43 has enough vibration space during the vibration process.

[0142] In one embodiment, a groove 313 is provided on a side of the main body 31 facing away from the first welding surface 311 , and a bottom wall of the groove 313 forms the second welding surface 312 .

[0143] In this embodiment, if Figure 4 , Figure 6 , Fig.11 , Fig.13 As shown, a groove 313 is provided on the side of the conductive bracket 3 facing away from the first welding surface 311, so that the bottom wall of the groove 313 forms a second welding surface 312, 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.

[0144] It can be understood that by setting the pad piece 32 as a first pad portion 321 and a second pad portion 322 that are connected, at least a portion of the first pad portion 321 is exposed on the first welding surface 311, and at least a portion of the second pad portion 322 is exposed on the second welding surface 312, thereby facilitating the connection and conduction between the first pad 4311 of the centering support piece 43 and the first pad portion 321 of the first welding surface 311, and the connection and conduction between the conductive circuit or flexible circuit board of the external circuit and the second pad portion 322 of the second welding surface 312, thereby smoothly conducting the external current to the voice coil 42 through the conductive bracket 3 and the centering support piece 43.

[0145] Optionally, the first welding surface 311 is provided with two first pad contacts. In this embodiment, the first pad portion 321 of the pad sheet 32 ​​is exposed on the first welding surface 311 to form two first pad contacts spaced apart. Optionally, the two first pad contacts are spaced apart along the long axis direction of the magnetic circuit system 2; or, the two first pad contacts are spaced apart along the short axis direction of the magnetic circuit system 2.

[0146] It should be noted that the two first pad contacts are arranged at intervals along the long axis direction of the magnetic circuit system 2. At this time, the two first pads 4311 of the main body 431 of the centering support 43 are arranged along the long axis direction of the magnetic circuit system 2 and are connected to the two first pad contacts respectively. Figure 3 , Fig.10 and Fig.12As shown, the two first pad contacts are arranged at intervals along the short axis direction of the magnetic circuit system 2. At this time, the two first pads 4311 of the main body 431 of the centering support piece 43 are arranged along the long axis direction of the magnetic circuit system 2 and are connected to the two first pad contacts respectively.

[0147] It can be understood that the second welding surface 312 is provided with two second pad contacts. In this embodiment, the second pad portion 322 of the pad sheet 32 ​​is exposed on the second welding surface 312 to form two second pad contacts spaced apart. Optionally, the two second pad contacts are spaced apart along the long axis direction of the magnetic circuit system 2; or, the two second pad contacts are spaced apart along the short axis direction of the magnetic circuit system 2.

[0148] In one embodiment, the conductive bracket 3 and the magnetic yoke 21 are integrally injection molded. It can be understood that the main body 31 of the conductive bracket 3 is a plastic part, the pad sheet 32 ​​can be a metal conductive part, the magnetic yoke 21 is a metal magnetic plate, and the main body 31 of the conductive bracket 3, the pad sheet 32 ​​and the magnetic yoke 21 can be integrally injection molded, which can improve the installation stability of the conductive bracket 3 and the magnetic yoke 21, while simplifying the processing and assembly steps.

[0149] In one embodiment, the magnetic yoke 21 is provided with a positioning platform 211 adjacent to the mounting hole 25 , and the conductive bracket 3 is provided with a positioning groove 314 corresponding to the positioning platform 211 , and the positioning platform 211 is embedded in the positioning groove 314 .

[0150] In this embodiment, if Figure 4 , Figures 11 to 13 As shown, by arranging a positioning platform 211 on the magnetic yoke 21, the positioning platform 211 is used to further install, fix and position the conductive bracket 3. It can be understood that when the conductive bracket 3 and the magnetic yoke 21 are injection molded, the positioning platform 211 is embedded in the main body 31 of the conductive bracket 3 to form a positioning groove 314 on the conductive bracket 3, that is, the positioning groove 314 corresponds to the positioning platform 211, and the positioning platform 211 is embedded in the positioning groove 314.

[0151] It is understandable that the positioning platform 211 is disposed 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.

[0152] In one embodiment, the positioning platform 211 is formed by bending one side of the magnetic yoke 21 adjacent to the mounting hole 25, that is, the positioning platform 211 is formed by bending one side of the magnetic yoke 21 adjacent to the third through hole. Optionally, the positioning platform 211 and the magnetic yoke 21 are an integrally formed structure, which can simplify the processing steps of the magnetic yoke 21 and improve 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 separately set, and the positioning platform 211 is connected to the magnetic yoke 21 by welding or gluing, which is not limited here.

[0153] In this embodiment, the magnetic yoke 21 is bent by stamping to form a positioning platform 211. Optionally, the positioning platform 211 is formed by bending the side of the magnetic yoke 21 adjacent to the mounting hole 25 toward the side close to the diaphragm assembly 41, which is not limited here. In this way, it can be ensured that the side of the magnetic yoke 21 facing away from the diaphragm assembly 41 is arranged in a plane, which facilitates the assembly of the sound-generating device 100 in an electronic device. At the same time, the positioning platform 211 can be used to realize the positioning and limiting functions of the central magnetic part 22 and the conductive bracket 3.

[0154] Optionally, the positioning platform 211 is an annular boss arranged around the mounting hole 25. Such an arrangement can effectively increase the contact area between the positioning platform 211 and the conductive bracket 3, thereby improving the installation stability. Of course, in other embodiments, the positioning platform 211 includes a plurality of positioning platforms 211, and the plurality of positioning platforms 211 are arranged at intervals along the periphery of the mounting hole 25. It can be understood that the interval between two adjacent positioning platforms 211 can reduce the cost and realize the installation, fixing and positioning of the conductive bracket 3.

[0155] In one embodiment, the conductive bracket 3 includes a main body 31 and a solder pad 32, the main body 31 is a plastic material part, the solder pad 32 is injection molded in the main body 31, the main body 31 includes a first connecting portion 315 and a second connecting portion 316 arranged on the side of the first connecting portion 315 close to the diaphragm assembly 41, the first connecting portion 315 is connected to the magnetic yoke 21, and the second connecting portion 316 is connected to the centering support plate 43; wherein the second connecting portion 316 is recessed and extends relative to the first connecting portion 315 in a direction away from the central magnetic portion 22 to form an avoidance space 317 for avoiding the centering support plate 43.

[0156] In this embodiment, if Figure 3 , Figure 4 , Figure 6 , Figures 10 to 13As shown, by setting the main body 31 of the conductive bracket 3 as a first connecting portion 315 and a second connecting portion 316 connected to each other, the first connecting portion 315 is connected to the magnetic yoke 21, and the second connecting portion 316 is connected to the centering support 43. It can be understood that by recessing and extending the second connecting portion 316 relative to the first connecting portion 315 in a direction away from the central magnetic portion 22 to form an escape space 317 for escaping the centering support 43, the escape space 317 is used to provide vibration and escape space for the centering support 43.

[0157] It can be understood that by forming an avoidance space 317 on the conductive bracket 3, the avoidance made by the central magnetic part 22 for the centering support plate 43 can be further reduced, thereby increasing the volume of the central magnetic part 22 and then increasing the magnetic field strength, which can increase the BL value and improve the acoustic performance of the sound-emitting device 100.

[0158] Optionally, a step structure is formed at the connection between the first connection part 315 and the second connection part 316, so that the step structure forms an avoidance space 317. It can be understood that the pad sheet 32 ​​of the conductive bracket 3 is injection molded in the main body 31. Optionally, the side of the first connection part 315 facing away from the second connection part 316 forms the second welding surface 312, and the side of the second connection part 316 facing away from the first connection part 315 forms the first welding surface 311, which is not limited here.

[0159] In one embodiment, a pressing groove 212 is further provided on the side of the magnetic yoke 21 facing away from the diaphragm assembly 41 , one end of the pressing groove 212 is connected to the mounting hole 25 , and the other end of the pressing groove 212 extends toward the periphery of the magnetic yoke 21 , and the pressing groove 212 is used to avoid wiring.

[0160] In this embodiment, if Figure 2 As shown, by providing a pressing groove 212 on the magnetic yoke 21 , one end of the pressing groove 212 is connected to the mounting hole 25 , and the other end of the pressing groove 212 extends toward the periphery of the magnetic yoke 21 , so that the pressing groove 212 is conveniently used for avoiding wiring.

[0161] It can be understood that the conductive bracket 3 of the sound-generating device 100 is connected to the external circuit through a conductive circuit or a flexible circuit board and other structures. At this time, the groove 212 on the side of the magnetic yoke 21 facing away from the diaphragm assembly 41 is used to provide a wiring space for the conductive circuit or the flexible circuit board and other structures, and to achieve positioning and limit installation of the wiring structure, thereby making the overall structure more compact and saving space. Optionally, the groove 212 is formed by a depression on the side of the magnetic yoke 21 facing away from the diaphragm assembly 41.

[0162] Optionally, the pressing groove 212 includes a plurality of pressing grooves 212, and the plurality of pressing grooves 212 are arranged at intervals. 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 arranged at intervals.

[0163] 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 may be optionally radially arranged with respect to the mounting hole 25 as the center, which is not limited here.

[0164] In one embodiment, a circumference of the magnetic yoke 21 is further provided with an escape notch 213 , and one end of the pressing groove 212 away from the mounting hole 25 is connected to the escape notch 213 .

[0165] In this embodiment, if Figure 2 , Figure 3 and Fig.10 As shown, by setting an avoidance gap 213 on the periphery of the magnetic yoke 21, the end of the pressing groove 212 away from the mounting hole 25 is connected to the avoidance gap 213. In this way, the avoidance gap 213 can be used to further limit the assembly of structures such as conductive circuits or flexible circuit boards to achieve directional wiring installation.

[0166] In one embodiment, if Figure 2 As shown, a positioning column is provided on the periphery of one side of the housing 1 facing away from the diaphragm assembly 41, and a positioning notch is provided on the magnetic yoke 21 corresponding to the positioning column, and the positioning column is positioned and matched with the positioning notch. It can be understood that by providing a positioning column on the housing 1 and forming a positioning notch on the magnetic yoke 21 to be positioned and matched with the positioning column, the positioning and installation of the magnetic circuit system 2 can be achieved, thereby improving the convenience and accuracy of installation.

[0167] In this embodiment, if Figure 3 , Figure 4 , Figure 6 As shown, the edge magnet part 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 an integrally formed structure, which can simplify the structure and improve the installation stability.

[0168] The present invention also proposes a sound module, which includes the above-mentioned sound device 100. The specific structure of the sound device 100 refers to the aforementioned embodiment. Since the sound module adopts all the technical solutions of all the aforementioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the aforementioned embodiments, which will not be described one by one here.

[0169] In one embodiment, the sound module further includes a flexible circuit board, one end of the flexible circuit board is electrically connected to the conductive bracket 3 of the sound device 100, and the other end of the flexible circuit board is used to connect to an external power source.

[0170] It can be understood that the flexible circuit board is used to connect the external circuit to the sound device 100. The flexible circuit board is provided with an inner pad and an outer pad, the inner pad of the flexible circuit board is connected to the second welding surface 312 of the conductive bracket 3 of the sound device 100, and the outer pad of the flexible circuit board is used to connect to the external terminal.

[0171] In this embodiment, the sound module further includes a module housing, the module housing has a cavity, the sound device 100 is disposed in the cavity of the module housing, and at least one end of the flexible circuit board connected to the sound device 100 is located in the cavity of the module housing. Of course, in other embodiments, the flexible circuit board can also be entirely disposed in the cavity of the module housing, which is not limited here.

[0172] The present invention further provides an electronic device, which includes the above-mentioned sound-generating device 100. The specific structure of the sound-generating device 100 refers to the above-mentioned embodiment. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0173] In this embodiment, the electronic device further includes a device housing, and the sound generating device 100 and the flexible circuit board are both arranged in the device housing. It can be understood 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.

[0174] The present invention also provides an electronic device, which includes the above-mentioned sound module. The specific structure of the sound module refers to the above-mentioned embodiment. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0175] 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 also includes a device housing, and the sound module is arranged in the device housing.

[0176] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied 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 comprising a diaphragm assembly, a voice coil and a centering support, the diaphragm assembly comprising a vibration part, a first folding ring part arranged outside the vibration part and a second folding ring part arranged inside the vibration part, the inner side of the second folding ring part is connected to the conductive bracket, one end of the voice coil is connected to the vibration part, the other end of the voice coil is suspended in the magnetic gap, one end of the centering support is electrically connected to the pad of the conductive bracket, and the other end of the centering support is connected to the diaphragm assembly; The vibration part is provided with a convex part protruding in a direction away from the magnetic circuit system, and the lead wire of the voice coil is routed along the inner wall of the convex part and is electrically connected to the centering support plate.

2. The sound generating device according to claim 1, characterized in that: The end surface of a part of the voice coil facing the diaphragm assembly corresponds to and is spaced from the convex portion; And / or, the voice coil is in a rectangular ring shape, the voice coil comprises two long sides and two short sides connected end to end, the voice coil has two lead wires, and the two lead wires are respectively arranged on the two long sides or the short sides.

3. The sound generating device according to claim 1, characterized in that: The first folding ring portion, the vibrating portion and the second folding ring portion are an integrally formed structure; or, the vibrating portion is formed as a vibration plate, the vibration plate is respectively bonded or integrally injection-molded with the first folding ring portion and the second folding ring portion, and the material of the vibration plate is a metal material or a fiber material; And / or, a hollow hole is provided on the inner side of the second folding ring portion, and part of the centering support piece is exposed in the hollow hole.

4. The sound generating device according to claim 1, characterized in that: The vibration part is formed by stamping to form the convex part, the first step surface and the second step surface, the first step surface is located at the outer periphery of the convex part and close to the magnetic circuit system, and the second step surface is located at the inner periphery of the convex part and close to the magnetic circuit system; The inner side of the first folding ring portion extends along a direction perpendicular to the vibration direction of the vibration system to form an inner fixing portion, and the outer side of the second folding ring portion extends along a direction perpendicular to the vibration direction of the vibration system to form an outer fixing portion; The inner fixing portion is overlapped on the first step surface and bonded to the first step surface, and the outer fixing portion is overlapped on the second step surface and bonded to the second step surface.

5. The sound generating device according to claim 4, characterized in that: The side of the inner fixing portion facing away from the first step surface is flush with the side of the convex portion facing away from the magnetic circuit system; And / or, a side of the external fixing portion facing away from the second step surface is flush with a side of the convex portion facing away from the magnetic circuit system; And / or, the second folding ring portion protrudes toward a side away from the magnetic circuit system, and the first folding ring portion protrudes toward a side close to the magnetic circuit system.

6. The sound generating device according to claim 1, characterized in that: The centering support plate includes a main body and a leg portion, the main body is connected to the conductive bracket and electrically connected to the pad of the conductive bracket, one end of the leg portion is connected to the main body, and the other end of the leg portion is connected to the vibration portion and electrically connected to the lead of the voice coil.

7. The sound generating device according to claim 6, characterized in that: The supporting leg parts include two, and the two supporting leg parts are symmetrically arranged; And / or, the leg portion includes a first leg and a second leg connected to each other, the first leg extends along the short axis direction of the main body portion and is connected to the main body portion, the second leg extends along the long axis direction of the main body portion and is connected to the vibration portion, and along the vibration direction of the vibration system, the second folding ring portion is opposite to the first leg and the second leg respectively; And / or, the main body and the leg portion are an integrally formed structure; And / or, the main body and the leg portions are located in the same plane; And / or, the main body is provided with a first pad, and the leg portion is provided with a second pad at one end away from the main body, the first pad is electrically connected to the pad of the conductive bracket, and the second pad is electrically connected to the lead of the voice coil.

8. The sound generating device according to claim 6, characterized in that: Along the vibration direction of the vibration system, the second folding ring portion protrudes and extends in a direction away from the supporting leg portion, and is arranged opposite to the supporting leg portion.

9. The sound generating device according to claim 1, characterized in that: The central magnetic part is provided with a avoidance structure corresponding to the centering support piece, and the avoidance structure is connected to the mounting hole; The avoidance structure is a groove formed by the central magnetic part being recessed toward the magnetic yoke; or, the avoidance structure is a through-hole structure penetrating the central magnetic part.

10. The sound generating device according to claim 9, characterized in that: The central magnetic part includes a central magnet and a central washer which are stacked, the central magnet is sandwiched between the central washer and the magnetic yoke, and the mounting hole passes through the magnetic yoke, the central magnet and the central washer in sequence; Among them, the center washer is provided with a groove which is recessed in the direction away from the diaphragm assembly to form the avoidance structure; or, the center washer is provided with a first groove which is recessed in the direction away from the diaphragm assembly, and the center magnet is provided with a second groove which is recessed in the direction away from the diaphragm assembly, and the first groove and the second groove are connected and together form the avoidance structure.

11. The sound generating device according to claim 10, characterized in that: Part of the center washer is recessed in a direction away from the diaphragm assembly to form a avoidance area, one end of the avoidance area is connected to the avoidance structure and / or the mounting hole, and the other end of the avoidance area extends toward the periphery of the center washer, and the avoidance area is arranged corresponding to the lead wire of the voice coil and / or the vibration part; And / or, the central magnet is arranged in a ring shape; or, the central magnet includes a plurality of central magnets, and the plurality of central magnets are arranged in a ring shape to form the mounting hole; And / or, the center washer is arranged in a ring shape; or, the center washer includes a plurality of center washers, and the plurality of center washers are arranged in a ring shape to form the mounting hole.

12. The sound generating device according to claim 1, characterized in that: The conductive support comprises: A main body, the main body having a first welding surface and a second welding surface disposed away from each other; and A pad sheet, the pad sheet is embedded in the main body, the pad sheet comprises 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; Wherein, the first welding surface is connected to the centering support plate, and the second welding surface is used to connect to an external power supply.

13. The sound generating device according to claim 12, characterized in that: Along the vibration direction of the vibration system, the first welding surface is higher than a surface of the central magnetic part facing the diaphragm assembly; And / or, a groove is provided on a side of the main body facing away from the first welding surface, and a bottom wall of the groove forms the second welding surface; And / or, the magnetic yoke, the main body and the pad are integrally injection molded.

14. The sound generating device according to any one of claims 1 to 13, characterized in that: The edge magnet part includes a stacked edge magnet and an edge washer, and the edge magnet is sandwiched between the magnetic yoke and the edge washer; 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.

15. The sound generating device according to any one of claims 1 to 13, characterized in that: A pressing groove is further provided on the side of the magnetic yoke facing away from the diaphragm assembly, 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.

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. 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.

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