Sound-generating devices and electronic equipment

Abstract

The present invention discloses a sound-generating device and electronic device, relating to the field of electroacoustic transducer technology. The sound-generating device includes a housing, a magnetic circuit system, a vibration system, and a support member. The vibration system includes a diaphragm, a skeleton, a voice coil, and a centering support. The diaphragm is connected to the housing and the skeleton, the voice coil is connected to the skeleton, and the centering support is connected to the skeleton and the housing. The skeleton is provided with at least two connecting structures, and the centering support is provided with a conductive portion. The connecting structures are respectively electrically connected to the corresponding conductive portion and the lead portion of the voice coil. The skeleton is provided with a first magnetic attraction portion, and the support member is provided with a second magnetic attraction portion located on the side of the diaphragm facing away from the magnetic circuit system. A first attraction force exists between the first magnetic attraction portion and the second magnetic attraction portion, and a second attraction force exists between the first magnetic attraction portion and the magnetic circuit system. When not in operation, the vibration system is in an equilibrium position under the action of the first and second attraction forces. The technical solution of the present invention can improve the low-frequency effect and acoustic performance of the sound-generating device.

Description

Technical Field

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

[0002] In recent years, consumer electronics have experienced rapid development, with smartphones, VR devices, and other electronic devices gaining widespread consumer acceptance. Technicians in this field have also developed improvements to related supporting products, such as speakers, to meet the sound performance requirements of electronic products and satisfy consumer demand for product performance.

[0003] Sound-generating devices are important electroacoustic transducers in electronic products, widely used in applications such as speakers, receivers, and headphones. As electronic product performance improves, improvements in the acoustic performance of sound-generating devices are inevitable. In theory, the low-frequency loudness of a sound-generating device is closely related to the maximum amount of air its vibration system can displace (the product of maximum amplitude and effective vibration area). To meet acoustic performance requirements, a larger vibration volume must be reserved to accommodate large amplitudes.

[0004] As the demand for thinner and lighter electronic devices becomes increasingly higher, the assembly space left for micro-sound devices in electronic devices is getting smaller and smaller. When a larger vibration space is reserved, the space available for installing the magnetic circuit system is also relatively smaller, resulting in a reduction in the volume of the magnets in the magnetic circuit system, thereby reducing the BL value of the product. As a result, even if a larger vibration space is reserved, it is difficult for the diaphragm to reach the maximum amplitude, affecting the acoustic performance of the sound device. Summary of the Invention

[0005] The main purpose of the present invention is to propose a sound-producing device and an electronic device, which aims to introduce static magnetic force into the vibration system by setting a first magnetic attraction part and a second magnetic attraction part, and reduce the stiffness of the vibration system by static magnetic force, so as to achieve a significant improvement in the low-frequency effect of the sound-producing device. The voice coil and the centering support are connected by a skeleton, which can increase the volume of the magnet in the magnetic circuit system, improve the BL value of the product, and thus improve the acoustic performance of the sound-producing device; and the skeleton is electrically connected to the voice coil and the centering support respectively, so that the voice coil can be electrically connected to the centering support through the skeleton, shortening the extension length of the lead part, which is conducive to reducing the risk of the voice coil being broken.

[0006] To achieve the above-mentioned purpose, the sound-generating device proposed in the present invention comprises:

[0007] shell;

[0008] A magnetic circuit system, the magnetic circuit system comprising a central magnetic portion and side magnetic portions spaced apart from each other, wherein the central magnetic portion and the side magnetic portions are spaced apart from each other to form a magnetic gap;

[0009] A vibration system, wherein the vibration system is arranged on one side of the magnetic circuit system, the vibration system includes a diaphragm, a skeleton, a voice coil and a centering support plate, the outer edge of the diaphragm is connected to the housing, the inner edge of the diaphragm is connected to the skeleton, one end of the voice coil is connected to the skeleton, and the other end of the voice coil is arranged corresponding to the magnetic gap, the centering support plate is opposite to the diaphragm and is arranged at a distance, one end of the centering support plate is connected to the end of the skeleton away from the diaphragm, and the other end of the centering support plate is connected to the housing, the skeleton is provided with at least two separately provided connection structures, the connection structure is a metal part, the voice coil is provided with two lead parts, the centering support plate is provided with two conductive parts, and each of the connection structures is electrically connected to the corresponding lead part and conductive part respectively; and

[0010] a support member, at least a portion of which is located on a side of the diaphragm facing away from the magnetic circuit system;

[0011] In which, the skeleton is provided with a first magnetic attraction part, the support part is provided with a second magnetic attraction part, there is a first attraction force between the first magnetic attraction part and the second magnetic attraction part, and there is a second attraction force between the first magnetic attraction part and the magnetic circuit system. When in a non-working state, the vibration system is located in a balanced position between the second magnetic attraction part and the magnetic circuit system under the action of the combined force of the first attraction force and the second attraction force.

[0012] In one embodiment, the connecting structure includes a first connecting arm and a second connecting arm, wherein the first connecting arm extends along a portion of the circumference of the voice coil, one end of the voice coil is connected to the first connecting arm, one end of the second connecting arm is connected to the first connecting arm, and the other end of the second connecting arm is bent and extended in a direction away from the diaphragm to connect to the centering arm;

[0013] And / or, the sound-generating device has two short sides and two long sides that are arranged opposite to each other, and the skeleton includes two connecting structures, which are respectively arranged on the two short sides or the two long sides.

[0014] In one embodiment, the skeleton further includes a main body structure, the main body structure and the diaphragm are stacked, one end of the connecting structure is connected to the main body structure, and the first magnetic attraction portion is provided on the main body structure;

[0015] And / or, the main body structure is provided with a hollow hole, the skeleton further includes a ball top portion, the ball top portion is provided on the main body structure and covers the hollow hole, and the first magnetic attraction portion is provided on the ball top portion;

[0016] And / or, a portion of the main body structure is recessed and extended toward the direction close to the magnetic circuit system to form a connecting frame, and one end of the voice coil close to the diaphragm is connected to the connecting frame.

[0017] In one embodiment, the skeleton includes a first component and a second component that are separately arranged and both are made of metal materials. The first magnetic portion is connected to at least one of the first component and the second component. Along the vibration direction of the vibration system, the projection of the voice coil is located within the first component and the second component. At least a portion of the first component forms one of the connecting structures, and at least a portion of the second component forms the other connecting structure.

[0018] In one embodiment, the first component includes a first support member and a first connecting member, and the second component includes a second support member and a second connecting member, wherein the first support member is insulated and connected to the second support member and are respectively arranged opposite to the central magnetic part, and the first connecting member and the second connecting member are both bent and extended in a direction away from the diaphragm and are respectively connected to the corresponding conductive parts.

[0019] In one embodiment, the edge magnet portion includes a stacked edge magnet and an edge magnetic conductive plate, wherein the edge magnetic conductive plate is provided on a side of the edge magnet facing the vibration system;

[0020] The centering support plate is arranged on a side of the edge magnetic conductive plate facing away from the diaphragm, and a gap is provided between at least a portion of the edge magnetic conductive plate and the shell, and the connecting structure is passed through the gap.

[0021] In one embodiment, the side magnetic conductive plate and the housing are integrally provided; or, the side magnetic conductive plate and the housing are separate structures connected to each other;

[0022] And / or, a first avoidance opening is provided on the side of the magnetic conductive plate facing the notch;

[0023] And / or, the edge of the side magnet is provided with a second avoidance opening for avoiding the connecting structure.

[0024] In one embodiment, a accommodating space is defined between the shell and the magnetic circuit system, and the centering support plate includes a first connecting portion, an elastic portion, and a second connecting portion that are connected to each other. The first connecting portion is connected to the shell, the elastic portion and the second connecting portion are located in the accommodating space, and the skeleton is connected to the second connecting portion.

[0025] In one embodiment, there are two centering supports, which are arranged on opposite sides of the frame;

[0026] One of the centering supports is provided with two of the conductive portions; or each of the centering supports is provided with one of the conductive portions.

[0027] In one embodiment, the magnetic circuit system further includes a magnetic yoke, the magnetic yoke including a main body and a bent portion provided on the outer periphery of the main body, the central magnetic portion and the edge magnetic portion are both provided on a side of the main body opposite to the vibration system, the bent portion bends and extends relative to the main body toward a direction close to the vibration system, and the bent portion, the housing, and the edge magnetic portion jointly define a storage space for arranging at least a portion of the centering support piece;

[0028] And / or, the central magnetic portion includes a central magnet and a central magnetic conductive plate arranged in a stacked manner, the central magnetic conductive plate is located on a side of the central magnet facing the vibration system, and along the vibration direction of the vibration system, the central magnetic conductive plate has a recessed area corresponding to the first magnetic attraction portion;

[0029] Part of the central magnetic conductive plate is recessed in a direction away from the vibration system to form the recessed area; or the recessed area is a through-hole structure penetrating the central magnetic conductive plate.

[0030] In one embodiment, the first magnetic attraction portion is a magnetic conductive sheet, and the material of the magnetic conductive sheet is SPCC or SUS430;

[0031] And / or, the first magnetic attraction portion is formed as a magnetic material coating provided on the surface of the frame;

[0032] And / or, at least a portion of the skeleton is made of a magnetic conductive material to form the first magnetic attraction portion;

[0033] And / or, the first magnetic attraction portion is embedded in the frame;

[0034] And / or, the first magnetic attraction portion is provided on a surface of the frame facing the second magnetic attraction portion;

[0035] And / or, the first magnetic attraction portion is provided on a surface of the skeleton facing the magnetic circuit system.

[0036] In one embodiment, the second magnetic attraction portion is a magnet, the second attraction force exists between the first magnetic attraction portion and the central magnetic portion, and the magnetization direction of the second magnetic attraction portion is opposite to the magnetization direction of the central magnetic portion;

[0037] And / or, the second magnetic attraction portion is provided on a side of the support member facing the first magnetic attraction portion;

[0038] And / or, the second magnetic attraction portion is provided on a side of the support member facing away from the first magnetic attraction portion;

[0039] And / or, a mounting cavity is provided in the support member, and the second magnetic attraction portion is provided in the mounting cavity;

[0040] And / or, the second magnetic attraction portion is circular, elliptical or polygonal;

[0041] And / or, the second magnetic attraction portion is arranged opposite to the first magnetic attraction portion;

[0042] And / or, a mounting groove is provided on a side of the support member facing the diaphragm, and the second magnetic attraction portion is provided in the mounting groove;

[0043] And / or, there are at least two second magnetic attraction parts, and the at least two second magnetic attraction parts are arranged on the same side or different sides of the support member.

[0044] In one embodiment, the sound-generating device is provided with a front cover, which is located on a side of the vibration system facing away from the magnetic circuit system. The front cover forms the support member, and the outer edge of the diaphragm is connected between the front cover and the housing.

[0045] In one embodiment, the sound-emitting device includes a module shell, the module shell includes a module upper shell and a module lower shell covering each other, the module upper shell and the module lower shell enclose an installation space, the magnetic circuit system and the vibration system are arranged in the installation space, the module upper shell is located on the side of the vibration system facing away from the magnetic circuit system, the module upper shell forms the support member, and the second magnetic attraction part is arranged on the module upper shell.

[0046] The present invention further provides an electronic device, comprising the sound-generating device as described in any of the aforementioned embodiments.

[0047] The technical solution of the present invention is to set a first magnetic attraction part in the vibration system of the sound-emitting device, and set a support member on the side of the vibration system facing away from the magnetic circuit system, and set a second magnetic attraction part on the support member, so that there is a first attraction force between the first magnetic attraction part and the second magnetic attraction part, and a second attraction force between the first magnetic attraction part and the magnetic circuit system. In this way, the first magnetic attraction part interacts with the second magnetic attraction part of the support member and the magnetic circuit system respectively, and a static magnetic force is introduced into the vibration system. Therefore, when the vibration system is working, part of the strain recovery force of the vibration system can be offset by the combined force of the first attraction force and the second attraction force, and the stiffness of the vibration system can be reduced by the static magnetic force, so that the compliance of the vibration system is better, thereby increasing the amplitude of the vibration system, thereby greatly improving the low-frequency effect of the sound-emitting device.

[0048] In the present invention, a vibration system connects the voice coil and the centering support plate via a skeleton. This arrangement eliminates the need for the centering support plate to extend to the position of the voice coil, allowing the magnetic circuit system to avoid the centering support plate in the vibration direction of the vibration system. This increases the volume of the magnets in the magnetic circuit system, increases the magnetic field strength acting on the vibration system, and increases the BL value of the product, thereby enhancing the sensitivity of the sound-generating device and thus improving the performance of the sound-generating device. Simultaneously, the lead portion of the voice coil is electrically connected to the conductive portion of the centering support plate via the skeleton's connecting structure, allowing the voice coil to achieve electrical connection to the centering support plate through the skeleton. This eliminates the need for the lead portion of the voice coil to extend outward, facilitates electrical connection of the voice coil, and prevents breakage due to excessively long lead portions. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0050] Figure 1 A cross-sectional view of a first embodiment of a sound-generating device provided by the present invention;

[0051] Figure 2 for Figure 1 A cross-sectional view of the sound-generating device from another perspective;

[0052] Figure 3 for Figure 1 Exploded view of the sound-generating device;

[0053] Figure 4 for Figure 1 Diagram of the voice coil, connection structure, and centering support structure of the central sounding device;

[0054] Figure 5 A cross-sectional view of a second embodiment of the sound-generating device provided by the present invention;

[0055] Figure 6 for Figure 5 A cross-sectional view of the sound-generating device from another perspective;

[0056] Figure 7 A cross-sectional view of a third embodiment of the sound-generating device provided by the present invention;

[0057] Figure 8 A cross-sectional view of a fourth embodiment of the sound-generating device provided by the present invention;

[0058] Figure 9 An exploded view of an embodiment of a skeleton in a sound-generating device of the present invention;

[0059] Figure 10 This is a structural diagram of an embodiment of a centering support in a sound-generating device of the present invention;

[0060] Figure 11 This is a diagram showing the matching structure of the housing and the side magnetic conductive plate in one embodiment of the sound-generating device of the present invention;

[0061] Figure 12 is a magnetostatic force curve diagram in the vibration direction of an embodiment of the sound-generating device of the present invention;

[0062] Figure 13 A stiffness curve diagram of an embodiment of the sound-generating device of the present invention and a conventional design;

[0063] Figure 14 This is a test diagram of the frequency response performance of an embodiment of the sound-generating device of the present invention and a conventional design.

[0064] Description of Figure Numbers:

[0065] 100. Sound-generating device; 1. Housing; 2. Magnetic circuit system; 21. Central magnetic portion; 211. Central magnet; 212. Central magnetic plate; 213. Recessed area; 22. Side magnetic portion; 221. Side magnet; 222. Side magnetic plate; 223. Notch; 224. First avoidance opening; 225. Second avoidance opening; 23. Magnetic yoke; 231. Main body; 232. Bend; 233. Accommodation space; 24. Magnetic gap; 3. Vibration system; 31. Diaphragm; 311. Inner ring hole; 32. Skeleton; 321. Main body structure; 3211. Recessed portion; 3212. Hollow hole; 3213. Connecting frame; 322. Connecting structure; 3221. First connecting arm; 3222. Second connecting arm; 3223. Third connecting arm; 3 23. First magnetic part; 3231. Magnetic conductive sheet; 3232. Magnetic material coating; 324. Dome; 325. First component; 3251. First support member; 3252. First connecting member; 326. Second component; 3261. Second support member; 3262. Second connecting member; 33. Voice coil; 331. Lead portion; 34. Centering support; 341. First connecting portion; 342. Elastic portion; 3421. First elastic arm; 3422. Second elastic arm; 3423. Third elastic arm; 343. Second connecting portion; 4. Support member; 41. Second magnetic part; 42. Front cover; 421. Sound hole; 43. Module shell; 431. Module upper shell; 432. Module lower shell; 433. Installation space; 5. Mesh.

[0066] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0067] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0068] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0069] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually 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.

[0070] The present invention proposes a sound-generating device 100, which can be used in electronic devices. The electronic devices may be, but are not limited to, smart watches, smart glasses, head-mounted display devices, mobile phones, speakers, computers, headphones, or televisions.

[0071] See also Figures 1 to 4In one embodiment of the present invention, the sound-generating device 100 includes a housing 1, a magnetic circuit system 2, a vibration system 3, and a support member 4. The magnetic circuit system 2 includes a central magnetic portion 21 and a side magnetic portion 22 that are spaced apart, and the central magnetic portion 21 and the side magnetic portion 22 are spaced apart to form a magnetic gap 24. The vibration system 3 is provided on one side of the magnetic circuit system 2. The vibration system 3 includes a diaphragm 31, a skeleton 32, a voice coil 33, and a centering support 34. The outer edge of the diaphragm 31 is connected to the housing 1, the inner edge of the diaphragm 31 is connected to the skeleton 32, one end of the voice coil 33 is connected to the skeleton 32, and the other end of the voice coil 33 is connected to the skeleton 32. Corresponding to the magnetic gap 24, the centering support piece 34 is opposite to the diaphragm 31 and is spaced apart. One end of the centering support piece 34 is connected to the end of the skeleton 32 away from the diaphragm 31, and the other end of the centering support piece 34 is connected to the housing 1. The skeleton 32 is provided with at least two separately provided connecting structures 322, and the connecting structure 322 is a metal part. The voice coil 33 is provided with two lead parts 331, and the centering support piece 34 is provided with two conductive parts. Each connecting structure 322 is electrically connected to the corresponding lead part 331 and the conductive part respectively; at least a portion of the support member 4 is located on the side of the diaphragm 31 facing away from the magnetic circuit system 2.

[0072] Among them, the skeleton 32 is provided with a first magnetic attraction part 323, and the support part 4 is provided with a second magnetic attraction part 41. There is a first attraction force between the first magnetic attraction part 323 and the second magnetic attraction part 41, and there is a second attraction force between the first magnetic attraction part 323 and the magnetic circuit system 2. When in the non-working state, the vibration system 3 is located in a balanced position between the second magnetic attraction part 41 and the magnetic circuit system 2 under the action of the combined force of the first attraction force and the second attraction force.

[0073] In an embodiment of the present invention, the sound-emitting device 100 can be a sound-emitting unit used as a loudspeaker, and can be used in conjunction with the housing or other components of an electronic device to form a sound cavity; the sound-emitting device 100 can also be a sound-emitting module structure, for example, a module housing 43 is provided to accommodate other components of the sound-emitting device 100 and form a sound cavity, so that the sound-emitting device 100 can be used alone as a sound-emitting device.

[0074] The sound-generating device 100 includes a housing 1 and a magnetic circuit system 2 and a vibration system 3 arranged relatively thereto; the housing 1 can provide an installation base for other components of the sound-generating device 100, and is used to install, fix and support other components of the sound-generating device 100, and the magnetic circuit system 2 and the vibration system 3 are respectively connected to the housing 1. The housing 1 can be an integral structure, or it can be formed by the cooperation of multiple separate structures. The housing 1 forms a cavity, and optionally, the housing 1 can be enclosed to form a closed cavity, or it can be enclosed to form a cavity with one end open or both ends through along the vibration direction; as in the illustrated embodiment, the housing 1 can be set as an annular frame or frame structure, for example, to form a square frame structure.

[0075] The magnetic circuit system 2 includes a central magnetic portion 21 and a side magnetic portion 22. The side magnetic portion 22 is arranged around the central magnetic portion 21, thereby forming a magnetic gap 24 between the central magnetic portion 21 and the side magnetic portion 22. The side magnetic portion 22 can be a closed-loop structure, or it can be composed of a plurality of sub-magnetic portions arranged at intervals along the circumference of the central magnetic portion 21. It should be noted that the connection method of the magnetic circuit system 2 and the housing 1 can be to provide a magnetic yoke 23 on the side of the magnetic circuit system 2 away from the vibration system 3, so that the magnetic yoke 23 is connected to the housing 1, and the central magnetic portion 21 and the side magnetic portion 22 are both fixed on the magnetic yoke 23; or it can be to connect the side magnetic portion 22 to the housing 1, and the central magnetic portion 21 is connected to the side magnetic portion 22 through the magnetic yoke 23. In addition, a mounting structure can be provided on the side of the magnetic circuit system 2 away from the vibration system 3. The mounting structure can be a part of the housing 1 or an independent component connected to the housing 1, and the magnetic circuit system 2 is fixed on the mounting structure to connect to the housing 1.

[0076] The vibration system 3 includes a diaphragm 31 and a voice coil 33. The outer edge of the diaphragm 31 is connected to the housing 1. Optionally, the diaphragm 31 may include a folded ring portion, a fixed portion connected to the outer edge of the folded ring portion, and a central portion connected to the inner edge of the folded ring portion. The fixed portion is connected to the housing 1. The folded ring portion has a convex structure that protrudes toward the side of the magnetic circuit system 2 or a convex structure that protrudes away from the magnetic circuit system 2. The central portion can be a complete diaphragm or can have an inner ring hole 311. When the inner ring hole 311 is provided, the inner ring hole 311 can be closed by covering the inner ring hole 311 with a dome or a frame 32. The voice coil 33 is connected to the side of the diaphragm 31 facing the magnetic circuit system 2. The contour of the voice coil 33 is adapted to the magnetic gap 24. The end of the voice coil 33 away from the diaphragm 31 is arranged corresponding to the magnetic gap 24 and can be inserted into the magnetic gap 24 or located outside the magnetic gap 24.

[0077] In this embodiment, to improve the stability of the vibration system 3 during vibration and avoid problems such as polarization, the vibration system 3 is further provided with a skeleton 32 and a centering support 34. The centering support 34 is disposed opposite the diaphragm 31 and is located on the side of the diaphragm 31 facing the voice coil 33. The outer edge of the centering support 34 is connected to the housing 1. One end of the skeleton 32 is connected to the diaphragm 31, and the other end of the skeleton 32 is connected to the centering support 34. The centering support 34 can be configured as a spring structure, or, as in the following embodiment, can include a first connecting portion 341 connected to the housing 1 and an elastically deformable elastic portion 342. The skeleton 32 is connected to the end of the elastic portion 342 away from the first connecting portion 341. When the vibration system 3 vibrates, the centering support 34 can elastically deform in the vibration direction along with the vibration of the diaphragm 31 and the voice coil 33.

[0078] Among them, the skeleton 32 includes at least two separately arranged connecting structures 322, one end of the connecting structure 322 is connected to the diaphragm 31, and can be directly connected to the diaphragm 31, or can be connected to the main structure 321 of the skeleton 32 as in the following embodiment, and indirectly connected to the diaphragm 31 through the main structure 321; the end of the connecting structure 322 away from the diaphragm 31 extends toward the centering support 34 and is connected to the centering support 34, and the end of the voice coil 33 facing the diaphragm 31 is connected to the part of the skeleton 32 connected to the diaphragm 31, for example, connected to the two connecting structures 322. When the skeleton 32 includes a main structure 321 stacked with the diaphragm 31, the voice coil 33 can also be connected to the main structure 321; that is, the voice coil 33 is connected to the centering support 34 through the skeleton 32. In the embodiment of the present invention, the various connection structures 322 are evenly distributed around the voice coil 33, so that the vibration system 3 is subjected to uniform force. For example, the skeleton 32 can be provided with two connection structures 322 located on both sides of the voice coil 33, or one connection structure 322 can be provided on each of the four sides of the skeleton 32. The skeleton 32 mentioned in the embodiment of the present invention is connected to the inner edge of the diaphragm 31, and the skeleton 32 is connected to the middle area of ​​the diaphragm 31, such as the central part mentioned in the aforementioned embodiment. When an inner ring hole 311 is opened in the middle of the diaphragm 31, the skeleton 32 is connected to the edge area of ​​the inner ring hole 311 and covers the inner ring hole 311. The provision of the skeleton 32 can be used to improve the structural strength of the middle area of ​​the diaphragm 31.

[0079] The centering support plate 34 can be an integral structure arranged around the circumference of the vibration system 3; or a plurality of centering supports 34 can be arranged around the circumference of the voice coil 33. In this case, the centering supports 34 can be connected to each other, or two adjacent centering supports 34 can be arranged at intervals. For example, two centering supports 34 can be provided, respectively located on opposite sides of the skeleton 32.

[0080] By connecting the centering support plate 34 and the voice coil 33 through the skeleton 32, there is no need to extend the centering support plate 34 to the position of the voice coil 33 and connect with the voice coil 33. At this time, in the vibration direction of the vibration system 3, the magnetic circuit system 2 does not need to avoid the centering support plate 34, so the setting volume of the magnet in the magnetic circuit system 2 can be increased, so that the volume of the magnetic circuit system 2 is increased, which is beneficial to increase the magnetic field strength of the magnetic circuit system 2 acting on the vibration system 3, increase the BL value of the product, and enhance the sensitivity of the sound-generating device 100, thereby improving the performance of the sound-generating device 100.

[0081] In the embodiment of the present invention, the connection structure 322 of the skeleton 32 is a metal part made of metal material; the voice coil 33 has two lead portions 331 extending outward from the voice coil body, and the two lead portions 331 correspond to two electrodes respectively; at least two independent conductive portions are provided on the centering support plate 34, and the conductive portion can be a solder pad provided on the centering support plate 34, or at least two independent conductive portions can be provided on the same centering support plate 34; when at least two centering support plates 34 are provided, the conductive portion can also be provided on at least two of the centering support plates 34. The connection structure 322 is electrically connected to a corresponding lead portion 331 and a conductive portion respectively, so that the voice coil 33 is electrically connected to the centering support plate 34 through the skeleton 32. There is no need to extend the lead portion 331 of the voice coil 33 outward, which facilitates the connection of the voice coil 33 to electricity; and it can avoid the problem of interference between the lead portion 331 and other components due to the lead portion 331 being too long, ensuring that the vibration system 3 can move stably, improving performance stability, and reducing the risk of breakage due to the lead portion 331 being too long; and there is no need to extend the lead portion 331 directly to the position of the centering support plate 34, so that the magnetic circuit system 2 does not need to avoid the lead portion 331 in the vibration direction of the vibration system 3, which is beneficial to increase the volume of the magnet in the magnetic circuit system 2 in the vibration direction of the vibration system 3, improve the BL value of the product, and improve the acoustic performance of the product.

[0082] Optionally, the connection between the lead portion 331 and the connection structure 322 can be achieved by bonding with conductive adhesive or by welding. The centering support piece 34 can be made of metal or other conductive materials to make it conductive; the centering support piece 34 can also be made of plastic or other insulating materials, and the centering support piece 34 can be made conductive by providing a conductive circuit on the centering support piece 34. The centering support piece 34 and the connection structure 322 can also be connected by bonding with conductive adhesive or welding. In addition, the centering support piece 34 and the connection structure 322 can also be connected to each other in a manner similar to a male and female plug-in connection, which is not limited here.

[0083] Optionally, the outline of the magnetic gap 24 formed in the magnetic circuit system 2 can be set to be square, and the voice coil 33 of the vibration system 3 can also be set to be square, so that the voice coil 33 corresponds to the magnetic gap 24. For example, the central magnetic portion 21 and the side magnetic portion 22 of the magnetic circuit system 2 can both be set to be square. Alternatively, the central magnetic portion 21 can be square, the inner outline of the side magnetic portion 22 can be square, and the outer outline of the side magnetic portion 22 can be circular or other shapes. In addition, the magnetic gap 24 formed by the magnetic circuit system 2 can also be circular, elliptical, or other shapes.

[0084] In the embodiment of the present invention, a first magnetic portion 323 is provided on the skeleton 32 of the vibration system 3. One, two or more first magnetic portions 323 may be provided. The first magnetic portion 323 may be provided on the surface of the skeleton 32, embedded in the skeleton 32, or connected to the edge of the first magnetic portion 323. Alternatively, at least a portion of the skeleton 32 may be made of a magnetically conductive material to serve as the first magnetic portion 323. A support member 4 is provided on the side of the diaphragm 31 facing away from the magnetic circuit system 2. The support member 4 is spaced apart from the diaphragm 31, and a second magnetic portion 41 is provided on the support member 4. The support member 4 may be a part of the housing 1, or a structure connected to the housing 1, such as the front cover 42 in the following embodiment. When the sound-generating device 100 is provided as a module structure, the module upper shell 431 may also be used as the support member 4. Of course, the structure of the support member 4 is not limited to the aforementioned structural design form. The second magnetic portion 41 can be connected to the support member 4, that is, the support member 4 is used to support and fix the second magnetic portion 41; the second magnetic portion 41 can be arranged on the surface of the support member 4, or can be embedded in the support member 4, or the support member 4 itself can form the second magnetic portion 41.

[0085] A first attractive force exists between the first magnetic portion 323 and the second magnetic portion 41, and a second attractive force exists between the first magnetic portion 323 and the magnetic circuit system 2. When the sound-generating device 100 is in a non-operating state, the vibration system 3 is positioned in an equilibrium position between the second magnetic portion 41 and the magnetic circuit system 2 due to the combined force of the first and second attractive forces. The first magnetic portion 323 can be configured as a magnetically conductive structure that can be attracted by a magnet, such as a magnetic conductive sheet 3231 or a magnetic material coating 3232, while the second magnetic portion 41 can be configured as a magnet. Both of these structures can cause the first magnetic portion 323 to be attracted by the second magnetic portion 41 and the magnetic circuit system 2. The combined attractive force applied to the first magnetic portion 323 can then serve as a force acting on the vibration system 3. Furthermore, in this embodiment, the first magnetic portion 323 and the second magnetic portion 41 are positioned opposite each other in the vibration direction of the vibration system 3. This allows the first magnetic portion 323 to be preferably within the magnetic field of the second magnetic portion 41, thereby increasing the first attractive force between the first magnetic portion 323 and the second magnetic portion 41.

[0086] It can be understood that when the vibration system 3 is working, the resultant force of the first attraction and the second attraction is opposite to the direction of the strain recovery force of the vibration system 3 and is less than the strain recovery force of the vibration system 3; when the vibration system 3 stops working, the equivalent stiffness of the resultant force of the first attraction and the second attraction is not greater than the stiffness of the vibration system 3, thereby making the vibration system 3 located in an equilibrium position between the second magnetic attraction part 41 and the magnetic circuit system 2 under the action of the resultant force of the first attraction and the second attraction. Specifically, when the vibration system 3 is working, the first magnetic attraction part 323 reciprocates between the second magnetic attraction part 41 and the magnetic circuit system 2. When the first magnetic attraction part 323 approaches the second magnetic attraction part 41, it moves away from the magnetic circuit system 2, the attraction between the first magnetic attraction part 323 and the second magnetic attraction part 41 increases, and the attraction between the first magnetic attraction part 323 and the magnetic circuit system 2 decreases, and the resultant force of the first attraction and the second attraction is toward the direction of the second magnetic attraction part 41. When the first magnetic attraction portion 323 approaches the magnetic circuit system 2 , it moves away from the second magnetic attraction portion 41 , the attraction between the first magnetic attraction portion 323 and the second magnetic attraction portion 41 decreases, and the attraction between the first magnetic attraction portion 323 and the magnetic circuit system 2 increases, and the combined force of the first attraction and the second attraction is toward the direction of the magnetic circuit system 2 .

[0087] In specific applications, taking the vibration of the vibration system 3 in the up and down directions as an example, when the vibration system 3 moves in the direction close to the second magnetic attraction part 41, it is an upward movement, and when the vibration system 3 moves in the direction close to the magnetic circuit system 2, it is a downward movement. When the vibration system 3 is not working, the vibration system 3 is at the initial position. When the vibration system 3 is working, the voice coil 33 drives the diaphragm 31 to vibrate up and down, thereby the vibration system 3 vibrates up and down. When the vibration system 3 moves upward to above the initial position, the direction of the strain recovery force of the vibration system 3 is downward. At this time, the first suction force between the first magnetic attraction part 323 and the second magnetic attraction part 41 is greater than the second suction force between the first magnetic attraction part 323 and the magnetic circuit system 2. The resultant force of the first suction force and the second suction force is upward and less than the strain recovery force of the vibration system 3. At this time, the resultant force of the first suction force and the second suction force acts on the diaphragm 31 to offset part of the strain recovery force of the vibration system 3. When the vibration system 3 moves downward to below the initial position, the direction of the strain recovery force of the vibration system 3 is upward. At this time, the first attraction between the first magnetic attraction part 323 and the second magnetic attraction part 41 is smaller than the second attraction between the first magnetic attraction part 323 and the magnetic circuit system 2. The resultant force of the first attraction and the second attraction is downward and smaller than the strain recovery force of the vibration system 3. At this time, the resultant force of the first attraction and the second attraction acts on the vibration system 3 to offset part of the strain recovery force of the vibration system 3.

[0088] It should be noted that the first attraction between the first magnetic attraction part 323 and the second magnetic attraction part 41, and the second attraction between the first magnetic attraction part 323 and the magnetic circuit system 2 will change with the position change of the vibration system 3. The resultant force of the first attraction and the second attraction exerted on the first magnetic attraction part 323, that is, the static magnetic force applied to the vibration system 3, is not fixed. During the vibration process of the vibration system 3, the static magnetic force applied to the vibration system 3 is proportional to the strain recovery force of the vibration system 3. In other words, the greater the distance the vibration system 3 deviates from its initial position, the greater the static magnetic force applied to the vibration system 3. The smaller the distance the vibration system 3 deviates from its initial position, the smaller the static magnetic force applied to the vibration system 3; the static magnetic force behaves as follows. Figure 12 shown.

[0089] Specifically, the system stiffness Kms consists of two parts: the stiffness Km of the vibration system 3 and the stiffness Kb of the cavity, that is, Kms=Km+Kb. Taking into account that the static magnetic force is related to the position of the vibration system 3, similar to the system stiffness Kms, the stiffness generated by the static magnetic force is defined as Kt, Kt=static magnetic force / displacement in the vibration direction. At this time, the total stiffness of the system becomes: Kms=Km+Kb-Kt, where Kms is the system stiffness, Km is the stiffness of the vibration system 3, and Kb is the cavity stiffness. At this time, as the displacement increases, the system stiffness decreases, that is, the larger the amplitude, the "softer" the system, and the "match" with the BL(x) curve trend, and the low-frequency performance is higher, such as Figure 13 and Figure 14 shown.

[0090] Therefore, by introducing the first magnetic attraction part 323 into the vibration system 3, the vibration system 3 is affected by the static magnetic force of the magnetic circuit system 2 and the second magnetic attraction part 41, and the stiffness of the vibration system 3 is reduced by the static magnetic force, so that the compliance of the vibration system 3 is better, and the amplitude of the vibration system 3 can be increased, thereby improving the low-frequency effect of the sound-generating device 100.

[0091] That is, the technical solution of the present invention is to set a first magnetic attraction part 323 in the vibration system 3 of the sound-generating device 100, and set a support member 4 on the side of the vibration system 3 facing away from the magnetic circuit system 2, and set a second magnetic attraction part 41 on the support member 4, so that there is a first attraction force between the first magnetic attraction part 323 and the second magnetic attraction part 41, and a second attraction force between the first magnetic attraction part 323 and the magnetic circuit system 2. In this way, the first magnetic attraction part 323 is used to interact with the second magnetic attraction part 41 of the support member 4 and the magnetic circuit system 2 respectively, and a static magnetic force is introduced into the vibration system 3, so that when the vibration system 3 is working, part of the strain recovery force of the vibration system 3 can be offset by the combined force of the first attraction force and the second attraction force, and the stiffness of the vibration system 3 can be reduced by the static magnetic force, so that the compliance of the vibration system 3 is better, thereby increasing the amplitude of the vibration system 3, thereby greatly improving the low-frequency effect of the sound-generating device 100.

[0092] In the present invention, the voice coil 33 and the centering support 34 are connected by the skeleton 32 in the vibration system 3. With this arrangement, there is no need to extend the centering support 34 to the position of the voice coil 33, so that the magnetic circuit system 2 does not need to avoid the centering support 34 in the vibration direction of the vibration system 3, thereby increasing the magnet setting volume of the magnetic circuit system 2, increasing the magnetic field strength of the magnetic circuit system 2 acting on the vibration system 3, and increasing the BL value of the product, thereby improving the sensitivity of the sound-generating device 100, thereby improving the performance of the sound-generating device 100. At the same time, the lead portion 331 of the voice coil 33 is electrically connected to the conductive portion of the centering support 34 through the connecting structure 322 of the skeleton 32. Under the premise that the centering support 34 is not directly connected to the voice coil 33, the electrical connection between the lead portion 331 and the centering support 34 can be achieved through the skeleton 32. There is no need to extend the lead portion 331 of the voice coil 33 outward, and the extension length of the lead portion 331 is shortened, which facilitates the connection of the voice coil 33 with electricity and prevents the lead portion 331 from being too long and causing breakage. There is no need to extend the lead portion 331 directly to the position of the centering support 34, and the magnetic circuit system 2 does not need to avoid the lead portion 331. Therefore, the volume of the magnet setting in the magnetic circuit system 2 can be increased in the vibration direction of the vibration system 3, thereby improving the product BL value and thereby improving the acoustic performance of the sound-generating device 100.

[0093] See also Figure 1 and Figure 4 In one embodiment, the connecting structure 322 includes a first connecting arm 3221 and a second connecting arm 3222. The first connecting arm 3221 is extended along a portion of the circumference of the voice coil 33. One end of the voice coil 33 is connected to the first connecting arm 3221. One end of the second connecting arm 3222 is connected to the first connecting arm 3221. The other end of the second connecting arm 3222 is bent and extended in a direction away from the diaphragm 31 to be connected to the centering support plate 34.

[0094] In this embodiment, the connecting structure 322 includes a first connecting arm 3221 and a second connecting arm 3222, which are connected to each other. The first connecting arm 3221 extends along a portion of the circumference of the voice coil 33 and can be directly connected to the diaphragm 31. When the skeleton 32 includes a main body structure 321, the first connecting arm 3221 can be connected to the surface of the main body structure 321 or to the side of the main body structure 321, without limitation. The end surface of the voice coil 33 near the diaphragm 31 is connected to the first connecting arm 3221 of each connecting structure 322. One end of the second connecting arm 3222 can be connected between the two ends of the first connecting arm 3221, can be connected to the central area of ​​the first connecting arm 3221, or can be adjacent to one end of the first connecting portion 341; the second connecting arm 3222 extends toward the centering support plate 34 away from the end of the first connecting arm 3221 and is connected to the centering support plate 34; the second connecting arm 3222 can be directly connected to the centering support plate 34. In one embodiment, the connecting structure 322 can also include a third connecting arm 3223, which is connected to the end of the second connecting arm 3222 away from the first connecting arm 3221 and is bent relative to the second connecting arm 3222 toward the side away from the voice coil 33, so that the third connecting arm 3223 is connected to the centering support plate 34, which can increase the connection area between the connecting structure 322 and the centering support plate 34, thereby improving the connection strength and convenience of the connecting structure 322 and the centering support plate 34.

[0095] Among them, the second connecting arm 3222 can be set as a straight extension structure, so that one end of the second connecting arm 3222 is connected to the main body structure 321, and the other end extends toward the centering support plate 34 in the direction away from the diaphragm 31; the second connecting arm 3222 can also be set as a bending structure, including a first section extending along the planar direction of the diaphragm 31 and a second section extending along the vibration direction, one end of the first section is connected to the first connecting arm 3221, and the second section extends from the first section in the direction away from the diaphragm 31 and is connected to the centering support plate 34.

[0096] See also Figures 1 to 4 In one embodiment, the sound-generating device 100 has two short sides and two long sides that are oppositely arranged. The skeleton 32 includes two connecting structures 322 , and the two connecting structures 322 are respectively arranged on the two short sides or the two long sides.

[0097] In this embodiment, the sound-generating device 100 is roughly square in shape, with the vibration system 3 and magnetic circuit system 2 all configured in a square or approximately square configuration. The sound-generating device 100 has two opposing short sides and two opposing long sides. The skeleton 32 includes two connecting structures 322, located on either side of the main body structure 321. The two connecting structures 322 are symmetrically arranged to connect to the centering support 34. In this arrangement, the two connecting structures 322 can be positioned in regions corresponding to the two short sides, or in regions corresponding to the two long sides. This arrangement ensures uniform support of the skeleton 32 on the centering support 34, ensuring a more uniform elastic force from the centering support 34 on the voice coil 33 and diaphragm 31 during vibration of the vibration system 3. This results in a more stable vibration process and reduces the risk of polarization. Furthermore, there is no need to provide an excessive number of connecting structures 322 on the skeleton 32, simplifying the skeleton 32 structure and making the overall structure more concise and easier to install.

[0098] See also Figures 1 to 3 In one embodiment, the skeleton 32 further includes a main body structure 321 , the main body structure 321 and the diaphragm 31 are stacked, one end of the connecting structure 322 is connected to the main body structure 321 , and the first magnetic portion 323 is provided on the main body structure 321 .

[0099] In this embodiment, the main body structure 321 is stacked on the diaphragm 31, with each connection structure 322 connected to the main body structure 321. The provision of the main body structure 321 improves the structural strength of the central region of the diaphragm 31. The first magnetic portion 323 is disposed on the main body structure 321, so that the static magnetic force exerted on the first magnetic portion 323 can effectively act on the central region of the diaphragm 31, thereby balancing the forces on the vibration system 3 and preventing polarization issues.

[0100] The connection structures 322 may be connected to the edge of the same main body structure 321 ; or at least two main body structures 321 may be provided so that each connection structure 322 is connected to one main body structure 321 .

[0101] It should be noted that when the main structure 321 is made of metal or other conductive materials, if the two connecting structures 322 connected to the two lead portions 331 are connected to the same main structure 321, an insulating material needs to be provided between the connecting structures 322 and the main structure 321, for example, the connecting structures 322 and the main structure 321 are bonded together with an insulating adhesive. In some embodiments, when the two connecting structures 322 are respectively connected to the two main structures 321, an insulating structure can be provided between the two main structures 321, for example, the two main structures 321 are connected together with an insulating adhesive. This avoids the problem of short circuit caused by the two connecting structures 322 being electrically connected through the main structure 321.

[0102] See also Figure 3 In one embodiment, a recessed portion 3211 is provided on one side of the main body structure 321 facing the second magnetic portion 41 . The recessed portion 3211 is formed by the skeleton 32 being recessed toward the central magnetic portion 21 , and the first magnetic portion 323 is provided in the recessed portion 3211 .

[0103] In this embodiment, a recessed portion 3211 is provided on the side of the main body structure 321 facing the first magnetic portion 323. The recessed portion 3211 is generally a groove structure. The provision of the recessed portion 3211 can increase the gap between the first magnetic portion 323 and the second magnetic portion 41, thereby increasing the vibration space for the vibration system 3 to move toward the second magnetic portion 41, reducing the risk of interference between the vibration system 3 and the second magnetic portion 41, and facilitating an increase in the amplitude of the vibration system 3, thereby improving the low-frequency effect and performance of the sound-generating device 100. Optionally, the first magnetic portion 323 can be provided on the surface of the recessed portion 3211 facing the second magnetic portion 41, or on the surface of the recessed portion 3211 facing the magnetic circuit system 2, or can be embedded in the recessed portion 3211. In addition, the first magnetic portion 323 can also be provided on the spherical top portion 324 provided on the recessed portion 3211, which will not be described in detail here.

[0104] See also Figures 1 to 3 In one embodiment, the main body structure 321 is provided with a hollow hole 3212 , the skeleton 32 further includes a ball top 324 , the ball top 324 is provided on the main body structure 321 and covers the hollow hole 3212 , and the first magnetic portion 323 is provided on the ball top 324 .

[0105] In this embodiment, the main body structure 321 is provided with a hollow hole 3212, and a spherical top portion 324 is provided in the skeleton 32 to cover the hollow hole 3212. The spherical top portion 324 and the main body structure 321 can be connected by bonding or other methods to ensure a sealed connection between the spherical top portion 324 and the main body structure 321, thereby avoiding air leakage at the location of the hollow hole 3212. The spherical top portion 324 can be a planar structure, or the spherical top portion 324 can have a convex arc surface. A first magnetic attraction portion 323 is provided on the spherical top portion 324. The first magnetic attraction portion 323 can be provided on the surface of the spherical top portion 324 facing the second magnetic attraction portion 41, or on the surface of the spherical top portion 324 facing the magnetic circuit system 2, or embedded inside the spherical top portion 324. In addition, the spherical top portion 324 can also be made of a magnetic conductive material so that the spherical top portion 324 serves as the first magnetic attraction portion 323.

[0106] In this embodiment, by providing a separate spherical top portion 324 and a main body structure 321, when the spherical top portion 324 is made of a magnetic conductive material to serve as the first magnetic attraction portion 323 or when the first magnetic attraction portion 323 is formed by providing a magnetic material coating 3232 on the spherical top portion 324, it is easy to control the volume and setting area of ​​the first magnetic attraction portion 323, thereby facilitating the control of the magnitude of the static magnetic force exerted on the vibration system 3 to meet different product performance requirements. In addition, with this setting method, the main body structure 321 can also be set to other materials to meet performance requirements. For example, the main body structure 321 can be set to a metal material to improve structural strength, and in some embodiments, this can also meet electrical conductivity requirements. In addition, the main body structure 321 can also be set to plastic or other materials to achieve at least one of the effects of reducing product quality, simplifying the structure, and facilitating manufacturing.

[0107] See also Figure 2 In one embodiment, a portion of the main body structure 321 is recessed and extended toward the direction close to the magnetic circuit system 2 to form a connecting frame 3213 , and one end of the voice coil 33 close to the diaphragm 31 is connected to the connecting frame 3213 .

[0108] In this embodiment, a connecting bracket 3213 is provided on the surface of the main body structure 321 facing the voice coil 33. The connecting bracket 3213 can be formed by recessing the entire area of ​​the main body structure 321 corresponding to the contour of the voice coil 33 toward the voice coil 33, thereby forming a corresponding recessed area 213 on the surface of the main body structure 321 facing away from the voice coil 33. Alternatively, the connecting bracket 3213 can simply be a raised structure formed on the surface of the main body structure 321 facing the voice coil 33 to match the contour of the voice coil 33, while the surface of the main body structure 321 facing away from the voice coil 33 can remain flat. The provision of the connecting bracket 3213 adjusts the relative position of the voice coil 33 and the magnetic gap 24 in the vibration direction, positioning the voice coil 33 in an area with denser magnetic flux lines, thereby improving the BL value.

[0109] See also Figure 8 In one embodiment, the skeleton 32 includes a first component 325 and a second component 326 that are separately arranged and both are made of metal materials. The first magnetic portion 323 is connected to at least one of the first component 325 and the second component 326. Along the vibration direction of the vibration system 3, the projection of the voice coil 33 is located within the first component 325 and the second component 326. At least part of the first component 325 forms one of the connecting structures 322, and at least part of the second component 326 forms the other connecting structure 322.

[0110] In this embodiment, the bobbin 32 includes a first component 325 and a second component 326, both of which are made of metal. At least a portion of the first component 325 forms a connecting structure 322, and at least a portion of the second component 326 forms another connecting structure 322. The two lead portions 331 of the voice coil 33 are respectively connected to the first component 325 and the second component 326. A portion of the first component 325 is stacked with the diaphragm 31, and a portion of the second component 326 is stacked with the diaphragm 31. The first component 325 and the second component 326 can be spaced apart or connected to each other. When the first component 325 and the second component 326 are connected to each other, they can be connected with insulating glue or connected to insulating portions to avoid electrical short circuits caused by the first component 325 and the second component 326.

[0111] In this embodiment, along the vibration direction of the vibration system 3, the projection of the voice coil 33 on the bobbin 32 is located on the first component 325 and the second component 326. This allows the magnetic field force acting on the voice coil 33 to act simultaneously on the first component 325 and the second component 326, resulting in uniform force on the diaphragm 31 and the bobbin 32. The end of the voice coil 33 closest to the diaphragm 31 can be connected only to the first component 325 or the second component 326, improving the connection convenience between the voice coil 33 and the bobbin 32. Alternatively, the end of the voice coil 33 closest to the diaphragm 31 can be connected to both the first component 325 and the second component 326, improving the connection strength between the voice coil 33 and the bobbin 32. Optionally, the first magnetic portion 323 can be connected to both the first component 325 and the second component 326, or it can be connected only to the first component 325 or the second component 326.

[0112] See also Figure 9 In one embodiment, the first component 325 includes a first support member 3251 and a first connecting member 3252, and the second component 326 includes a second support member 3261 and a second connecting member 3262, wherein the first support member 3251 and the second support member 3261 are insulated and connected to each other and are respectively arranged opposite to the central magnetic portion 21, and the first connecting member 3252 and the second connecting member 3262 are both bent and extended in a direction away from the diaphragm 31 and are respectively connected to the corresponding conductive parts.

[0113] In this embodiment, the first support member 3251 of the first component 325 and the second support member 3261 of the second component 326 are connected to each other by insulating adhesive and cover the central region of the diaphragm 31, thereby improving the structural strength of the central region of the diaphragm 31. The first magnetic portion 323 covers a portion of the first support member 3251 and a portion of the second support member 3261. The first component 325 is provided with a first connecting member 3252 extending from the first support member 3251 to the centering support plate 34. The end of the first connecting member 3252 away from the first support member 3251 is connected to the centering support plate 34. The second component 326 is provided with a second connecting member 3262 extending from the second support member 3261 to the centering support plate 34. The end of the second connecting member 3262 away from the second support member 3261 is connected to the centering support plate 34.

[0114] Optionally, the first connecting member 3252 can be integrally formed with the first supporting member 3251 to form the first component 325, or the first connecting member 3252 and the first supporting member 3251 can be separate structures connected to each other. Similarly, the second connecting member 3262 can be integrally formed with the second supporting member 3261 to form the second component 326, or the second connecting member 3262 and the second supporting member 3261 can be separate structures connected to each other.

[0115] Optionally, a hollow hole 3212 may be provided at the connection position between the first support member 3251 and the second support member 3261 , and the hollow hole 3212 may be covered by providing a ball top portion 324 or utilizing the first magnetic portion 323 .

[0116] See also Figure 1 and Figure 11 In one embodiment, the edge magnetic portion 22 includes a stacked edge magnet 221 and an edge magnetic conductive plate 222, the edge magnetic conductive plate 222 being arranged on the side of the edge magnet 221 facing the vibration system 3; the centering support plate 34 is arranged on the side of the edge magnetic conductive plate 222 facing away from the diaphragm 31, and there is a gap 223 between at least part of the edge magnetic conductive plate 222 and the outer shell 1, and the connecting structure 322 is passed through the gap 223.

[0117] In this embodiment, the side magnetic portion 22 in the magnetic circuit system 2 includes a side magnet 221 and a side magnetic conductive plate 222. The side magnetic conductive plate 222 is arranged on the side of the side magnet 221 facing the vibration system 3, and the side magnet 221 and the side magnetic conductive plate 222 are both arranged around the central magnetic portion 21; the setting of the side magnetic conductive plate 222 can have a magnetic gathering effect on the magnetic flux lines of the magnetic circuit system 2 facing the vibration system 3, so that the magnetic field lines on the side of the vibration system 3 are concentrated, thereby reducing leakage magnetic flux and improving the magnetic field strength.

[0118] Along the vibration direction of the vibration system 3, the centering support 34 is located on the side of the side magnetic plate 222 facing away from the diaphragm 31. The outer edges of the side magnetic plate 222 can be spaced apart from the housing 1 to form a notch 223. Alternatively, a portion of the outer edge of the side magnetic plate 222 can be connected to the housing 1, while another portion of the outer edge of the side magnetic plate 222 is spaced apart from the housing 1 to form a notch 223. Alternatively, the notch 223 can be provided on the side magnetic plate 222. The connecting structure 322 of the skeleton 32 passes through the notch 223 and connects to the centering support 34. This arrangement eliminates the need to position the centering support 34 on the side of the magnetic circuit system 2 facing the diaphragm 31. In this case, the magnetic circuit system 2 does not need to avoid the centering support 34 on the side adjacent to the diaphragm 31. Instead, the centering support 34 can be extended toward the side closer to the diaphragm 31 to increase the volume of the magnet in the magnetic circuit system 2, thereby increasing the magnetic field strength and thus improving the BL value. In some embodiments, this can also reduce the distance between the magnetic circuit system 2 and the diaphragm 31, thereby reducing the thickness of the sound-generating device 100.

[0119] See also Figure 11 In one embodiment, the side magnetic conductive plate 222 is integrally provided with the housing 1 .

[0120] In this embodiment, the side magnetic conductive plate 222 can be integrally injection molded with the outer shell 1. For example, the side magnetic conductive plate 222 is placed in a mold used for injection molding the outer shell 1, so that the outer shell 1 and the side magnetic conductive plate 222 can be connected when the outer shell 1 is injection molded. This connection method makes the connection strength between the side magnetic conductive plate 222 and the outer shell 1 higher, and the overall structural stability is good and not easy to separate.

[0121] See also Figure 1 In one embodiment, the side magnetic plate 222 and the housing 1 are separate, interconnected structures. The side magnetic plate 222 can be secured to the housing 1 by bonding, snapping, screwing, or other methods. This arrangement allows the side magnetic plate 222 and the housing 1 to be formed separately, facilitating fabrication and providing flexible assembly.

[0122] See also Figure 11 In one embodiment, a first avoidance opening 224 is provided on the side of the side magnetic conductive plate 222 facing the notch 223; the setting of the first avoidance opening 224 can reduce the risk of interference of the skeleton 32 with the side magnetic conductive plate 222 when the vibration system 3 vibrates, reduce interference, improve the stability of the vibration process of the vibration system 3, and avoid damage caused by collision or friction between the skeleton 32 and the side magnetic conductive plate 222.

[0123] See also Figure 3In one embodiment, a second avoidance opening 225 is provided on the edge of the side magnet 221 for avoiding the connection structure 322. The provision of the second avoidance opening 225 can reduce the risk of interference of the side magnet 221 on the skeleton 32 when the vibration system 3 vibrates, reduce interference, improve the stability of the vibration process of the vibration system 3, and avoid damage caused by collision or friction between the skeleton 32 and the side magnet 221. Optionally, a first avoidance opening 224 can be provided on the side magnetic plate 222, and a second avoidance opening 225 can be provided on the side magnet 221. The first avoidance opening 224 and the second avoidance opening 225 are provided correspondingly, thereby avoiding collision or friction between the skeleton 32 and the side magnetic portion 22 and affecting the normal operation of the vibration system 3.

[0124] See also Figure 1 and Figure 10 In one embodiment, a receiving space 233 is defined between the shell 1 and the magnetic circuit system 2, and the centering support piece 34 includes a first connecting portion 341, an elastic portion 342 and a second connecting portion 343 that are connected to each other. The first connecting portion 341 is connected to the shell 1, the elastic portion 342 and the second connecting portion 343 are located in the receiving space 233, and the skeleton 32 is connected to the second connecting portion 343.

[0125] In this embodiment, at least a portion of the magnetic circuit system 2 is spaced apart from the inner sidewall of the housing 1 to form an accommodation space 233. The centering support 34 is installed in the accommodation space 233, so that the magnetic circuit system 2 does not need to avoid the centering support 34 in the vibration direction of the vibration system 3. This helps to increase the size of the magnetic circuit system 2 in the vibration direction of the vibration system 3, improve the magnetic field strength, and thus increase the BL value of the product. The centering support 34 includes a first connecting portion 341, an elastic portion 342, and a second connecting portion 343. The first connecting portion 341 is connected to the housing 1, and the elastic portion 342 extends toward the magnetic circuit system 2. The second connecting portion 343 is located at the end of the elastic portion 342 away from the first connecting portion 341 and is connected to the frame 32. The elastic portion 342 can be configured as a straight-extending elastic cantilever or as a bent elastic arm, so that the elastic portion 342 can bend and deform when the vibration system 3 vibrates.

[0126] Optionally, the elastic portion 342 includes two first elastic arms 3421, two second elastic arms 3422 and a third elastic arm 3423, one end of the first elastic arm 3421 is connected to the first connecting portion 341, the second elastic arm 3422 extends from the other end of the first elastic arm 3421 to the first connecting portion 341, the two ends of the third elastic arm 3423 are respectively connected to one end of the two second elastic arms 3422 close to the first connecting portion 341, and the second connecting portion 343 is arranged on the third elastic arm 3423.

[0127] See also Figure 4In one embodiment, there are two centering support plates 34, which are arranged on opposite sides of the frame 32; one of the centering support plates 34 is provided with two conductive parts; or, each centering support plate 34 is provided with a conductive part.

[0128] In this embodiment, the vibration system 3 is provided with two centering supports 34, which are disposed on opposite sides of the frame 32. These supports 34 provide support for the frame 32 on both sides, ensuring uniform force distribution and maintaining positional balance on the vibration system 3, thus preventing polarization issues. The two centering supports 34 can be connected end-to-end to form a ring structure, or they can be spaced apart. The voice coil 33 is usually provided with two lead portions 331 corresponding to the two electrodes respectively. In this embodiment, a conductive portion can be provided on each of the two centering supports 34, and the two connecting structures 322 electrically connected to the two lead portions 331 of the voice coil 33 are electrically connected to the two conductive portions one-to-one. Two independent conductive portions can also be provided on one of the centering supports 34. For example, the centering support 34 can include an insulating body and two conductive portions, and the two conductive portions are formed on different surfaces of the insulating body or are arranged at intervals on the same surface of the insulating body. Similarly, the two connecting structures 322 electrically connected to the two lead portions 331 are electrically connected to the two conductive portions one-to-one. With such an arrangement, the voice coil 33 can be electrically connected to the centering support 34 through the connecting structure 322, and the problem of short circuit caused by the electrical connection of the two conductive portions can be avoided.

[0129] See also Figures 1 to 3 In one embodiment, the magnetic circuit system 2 further includes a magnetic yoke 23, which includes a main body 231 and a bent portion 232 arranged on the outer periphery of the main body 231. The central magnetic portion 21 and the edge magnetic portion 22 are both arranged on the side of the main body 231 opposite to the vibration system 3. The bent portion 232 bends and extends relative to the main body 231 toward the direction close to the vibration system 3. The bent portion 232, the housing 1 and the edge magnetic portion 22 jointly define an accommodating space 233 for arranging at least part of the centering support piece 34.

[0130] In this embodiment, the housing 1 has an opening on at least one side away from the vibration system 3. The magnetic circuit system 2 also includes a magnetic yoke 23 covering the opening. The magnetic yoke 23 includes a main body 231 disposed on the side of the central magnetic portion 21 and the side magnetic portion 22 facing away from the vibration system 3, and a bent portion 232 bent relative to the main body 231. The bent portion 232 extends from the main body 231 toward the side closer to the vibration system 3 and is disposed opposite the housing 1. The bent portion 232 can be connected to the housing 1 at one end away from the main body 231. The magnetic yoke 23 can be used to guide the transmission of magnetic flux lines, enclosing the magnetic flux lines generated by the magnetic circuit system 2 within the sound-generating device 100, reducing magnetic leakage, and increasing the magnetic field strength acting on the voice coil 33, thereby facilitating an increase in the BL value of the product and enhancing the acoustic performance of the product.

[0131] In this embodiment, the housing 1 and the bent portion 232 are spaced apart from at least a portion of the edge magnet portion 22, so that the bent portion 232, the housing 1, and the edge magnet portion 22 collectively define a receiving space 233. At least a portion of the centering support 34 can be disposed within the receiving space 233. For example, the edge of the centering support 34 can be connected between the bent portion 232 and the housing 1, with a portion of the centering support 34 located within the receiving space 233 for connection to the frame 32. Alternatively, the entire centering support 34 can be disposed within the receiving space 233, which is not limited herein. The bent portion 232 can be disposed around the main body 231 or located only at a portion of the edge of the main body 231.

[0132] See also Figures 1 to 3 In one embodiment, the central magnetic portion 21 includes a stacked central magnet 211 and a central magnetic conductive plate 212. The central magnetic conductive plate 212 is located on the side of the central magnet 211 facing the vibration system 3. Along the vibration direction of the vibration system 3, the central magnetic conductive plate 212 is provided with a recessed area 213 corresponding to the first magnetic attraction portion 323; wherein, part of the central magnetic conductive plate 212 is recessed in a direction away from the vibration system 3 to form the recessed area 213; or, the recessed area 213 is a through-hole structure that passes through the central magnetic conductive plate 212.

[0133] In this embodiment, the central magnetic portion 21 includes a stacked central magnet 211 and a central magnetic conductive plate 212. The central magnetic conductive plate 212 is located on the side of the central magnet 211 facing the vibration system 3. The central magnetic conductive plate 212 can concentrate the magnetic flux lines of the magnetic circuit system 2 toward the vibration system 3, thereby concentrating the magnetic field lines on the side of the vibration system 3, reducing magnetic leakage, and increasing the magnetic field strength.

[0134] Among them, a recessed area 213 is provided on the surface of the central magnetic conductive plate 212 facing away from the vibration system 3. The recessed area 213 is provided corresponding to the first magnetic attraction portion 323, which can reduce the influence of the magnetic focusing effect of the central magnetic conductive plate 212 on the second attraction force, thereby effectively increasing the magnetic attraction force between the first magnetic attraction portion 323 and the central magnet 211. It can be understood that the provision of the recessed area 213 is also conducive to avoiding the recessed portion 3211 provided on the skeleton 32. Among them, the recessed area 213 can be a through hole or notch structure that passes through the central magnetic conductive plate 212. Of course, the recessed area 213 can also be a groove structure formed by the central magnetic conductive plate 212 being recessed in the direction away from the diaphragm 31, which is not limited here.

[0135] Optionally, a portion of the central magnetic conductive plate 212 is recessed in a direction away from the diaphragm 31 to form a recessed area 213. Of course, in other embodiments, the recessed area 213 is a through-hole structure that extends through the central magnetic conductive plate 212. The central magnetic conductive plate 212 is arranged in an integral annular shape, such that the recessed area 213 is formed in the center of the central magnetic conductive plate 212. In other embodiments, the central magnetic conductive plate 212 includes multiple central magnetic conductive plates 212, and the multiple central magnetic conductive plates 212 are surrounded in an annular shape to form the recessed area 213.

[0136] See also Figures 1 to 3 In one embodiment, the first magnetic attraction portion 323 is a magnetic conductive sheet 3231 , and the material of the magnetic conductive sheet 3231 is SPCC or SUS.

[0137] In this embodiment, each of the separate connecting structures 322 can be connected to the first magnetic portion 323 configured as a magnetic conductive sheet 3231. When the skeleton 32 is provided with a main body structure 321, the magnetic conductive sheet 3231 can also be adhered to the surface of the main body structure 321. Alternatively, when the skeleton 32 is provided with a first component 325 and a second component 326 to form at least two connecting structures 322, the first magnetic portion 323 configured as a magnetic conductive sheet 3231 can be adhered to the surface of at least one of the first component 325 and the second component 326. In some embodiments, when the skeleton 32 is provided with a hollow hole 3212 and a spherical top portion 324 covering the hollow hole 3212, the first magnetic portion 323 configured as a magnetic conductive sheet 3231 can be adhered to the surface of the spherical top portion 324, or the spherical top portion 324 can be provided with a magnetic conductive sheet 3231 to serve as the first magnetic portion 323, without limitation herein.

[0138] See also Figure 8In one embodiment, the first magnetic portion 323 is formed as a magnetic material coating 3232 provided on the surface of the skeleton 32; wherein the magnetic material coating 3232 is a mixture of magnetic conductive material particles and an adhesive, and the magnetic conductive material particles are at least one of iron powder, nickel powder, manganese zinc ferrite powder, nickel zinc ferrite powder, neodymium iron boron powder, aluminum iron boron powder, iron silicon powder, and sendust powder, without limitation herein. The magnetic material coating 3232 can be applied to the surface of the skeleton 32 facing the second magnetic portion 41, or to the surface of the skeleton 32 facing away from the second magnetic portion 41, or to both the surface of the skeleton 32 facing the second magnetic portion 41 and the surface facing away from the second magnetic portion 41, without limitation herein. Similarly, when the skeleton 32 is provided with a main body structure 321, the magnetic material coating 3232 may be provided on the surface of the main body structure 321. Alternatively, when the skeleton 32 is provided with a first component 325 and a second component 326 to form at least two connecting structures 322, the magnetic material coating 3232 may be provided on the surface of at least one of the first component 325 and the second component 326. In some embodiments, when the skeleton 32 is provided with a hollow hole 3212 and a spherical top portion 324 covering the hollow hole 3212, the magnetic material coating 3232 may be provided on the surface of the spherical top portion 324, which is not limited here.

[0139] See also Figure 7 In one embodiment, a portion of the skeleton 32 is made of a magnetically conductive material to form the first magnetic portion 323. In this embodiment, the entire skeleton 32 can be made of a magnetically conductive material, or part or all of the main body 231 of the skeleton 32 can be made of a magnetically conductive material. When the skeleton 32 is provided with a spherical top portion 324, only the spherical top portion 324 can be made of a magnetically conductive material, or both the spherical top portion 324 and at least a portion of the main body 321 can be made of a magnetically conductive material. This arrangement forms the first magnetic portion 323 during the preparation of the skeleton 32, eliminating the need for a separate assembly, thereby improving assembly convenience.

[0140] In one embodiment, the first magnetic portion 323 is embedded in the frame 32 .

[0141] In this embodiment, when the skeleton 32 is provided with a main body structure 321, a mounting cavity can be provided within the main body structure 321, and the first magnetic portion 323 can be provided within the mounting cavity; alternatively, the first magnetic portion 323 can be provided in the mold forming the main body structure 321 during injection molding, so that the first magnetic portion 323 is naturally embedded within the main body structure 321 after the main body structure 321 is formed. When the skeleton 32 is provided with a separate first component 325 and a second component 326, the first magnetic portion 323 can be embedded within one of the first component 325 and the second component 326, or at least one first magnetic portion 323 can be embedded within both the first component 325 and the second component 326. This arrangement can prevent the first magnetic portion 323 from being exposed to the outside, protect the first magnetic portion 323, and reduce the risk of damage to the first magnetic portion 323.

[0142] See also Figure 1 and Figure 2 In one embodiment, the first magnetic portion 323 is provided on the surface of the skeleton 32 facing the second magnetic portion 41 ; and / or, the first magnetic portion 323 is provided on the surface of the skeleton 32 facing the magnetic circuit system 2 .

[0143] In this embodiment, the first magnetic portion 323 can be disposed on the surface of the frame 32 facing the second magnetic portion 41, or on the surface of the frame 32 facing the magnetic circuit system 2. Alternatively, the first magnetic portion 323 can be disposed on both the surface of the frame 32 facing the second magnetic portion 41 and the surface of the frame 32 facing the magnetic circuit system 2, without limitation. Disposing the first magnetic portion 323 on the surface of the frame 32 facilitates connection and assembly / disassembly of the first magnetic portion 323 and the frame 32.

[0144] In some embodiments, the first magnetic portion 323 may be provided on any surface of the skeleton 32 and on the inner side of the skeleton 32 .

[0145] In one embodiment, the second magnetic attraction portion 41 is a magnet, and there is a second attraction force between the first magnetic attraction portion 323 and the central magnetic portion 21, and the magnetization direction of the second magnetic attraction portion 41 is opposite to the magnetization direction of the central magnetic portion 21; in this way, the magnetic flux lines generated by the second magnetic attraction portion 41 are opposite to the magnetic flux lines generated by the central magnetic portion 21 and repel each other, and the two parts of the magnetic flux lines pass through the voice coil 33 horizontally, thereby increasing the strength of the magnetic flux lines acting on the voice coil 33, increasing the BL value of the product, and thereby improving the sound sensitivity of the sound-emitting device 100.

[0146] See also Figure 1 and Figure 2In one embodiment, the second magnetic attraction portion 41 is arranged on the side of the support member 4 facing the first magnetic attraction portion 323; and / or, the second magnetic attraction portion 41 is arranged on the side of the support member 4 facing away from the first magnetic attraction portion 323; and / or, an installation cavity is provided in the support member 4, and the second magnetic attraction portion 41 is arranged in the installation cavity.

[0147] It is understood that the second magnetic portion 41 can be disposed on at least one side of the support member 4, that is, the second magnetic portion 41 can be disposed on one side or on two opposing sides of the support member 4. In this embodiment, the support member 4 has an upper surface and a lower surface disposed in opposite directions, with the lower surface facing the diaphragm 31. In this case, the second magnetic portion 41 can be disposed on the upper surface; the second magnetic portion 41 can also be disposed on the lower surface; or the second magnetic portion 41 can be disposed on both the upper and lower surfaces.

[0148] Of course, the second magnetic portion 41 can also be disposed in the support member 4, that is, the second magnetic portion 41 is embedded in the support member 4 or injection molded in the support member 4. In one embodiment, the support member 4 is provided with a mounting cavity, and the second magnetic portion 41 is disposed in the mounting cavity.

[0149] In one embodiment, at least two second magnetic portions 41 are provided, and the at least two second magnetic portions 41 are provided on the same side or different sides of the support member 4 .

[0150] In this embodiment, two, three, four, or more second magnetic portions 41 may be provided. The second magnetic portions 41 may be provided on the same side of the support member 4. For example, the plurality of second magnetic portions 41 may be provided on the upper or lower surface of the support member 4, or may be embedded in the support member 4. The second magnetic portions 41 may also be provided on different sides of the support member 4. For example, two of the second magnetic portions 41 may be provided on the upper and lower surfaces of the support member 4, respectively.

[0151] Optionally, when multiple second magnetic portions 41 are disposed on the same side of the support member 4, the multiple second magnetic portions 41 are arranged in a spliced ​​arrangement. For example, two adjacent second magnetic portions 41 among the multiple second magnetic portions 41 are arranged closely together, i.e., there is no gap. When multiple second magnetic portions 41 are disposed on the same side of the support member 4, the multiple second magnetic portions 41 are arranged in an interspaced arrangement. For example, there is a gap between two adjacent second magnetic portions 41 among the multiple second magnetic portions 41.

[0152] In one embodiment, the second magnetic portion 41 is circular, elliptical, or polygonal; that is, the shape of the second magnetic portion 41 can be circular, elliptical, triangular, square, or other polygonal structures, without limitation. To ensure a balanced magnetic attraction between the second magnetic portion 41 and the first magnetic portion 323, the structure of the second magnetic portion 41 can be symmetrical or regular, without limitation.

[0153] See also Figure 1 and Figure 2 In one embodiment, the second magnetic portion 41 is disposed opposite the first magnetic portion 323. This arrangement allows the first magnetic portion 323 to be preferably within the magnetic field of the second magnetic portion 41, thereby increasing the first attractive force between the first magnetic portion 323 and the second magnetic portion 41. In one embodiment, a mounting groove is provided on the side of the support member 4 facing the diaphragm 31, and the second magnetic portion 41 is disposed within the mounting groove.

[0154] In this embodiment, the mounting groove can be a groove structure formed by a concave groove on one side surface of the support member 4, or a concave structure formed by a concave groove on one side surface of the support member 4, so that the other side surface is raised, without limitation here. It is understood that the mounting groove can be provided on the lower surface of the support member 4. Of course, in other embodiments, the mounting groove can be provided on the upper surface of the support member 4, without limitation here.

[0155] See also Figure 1 and Figure 2 In one embodiment, the sound-generating device 100 is provided with a front cover 42 , which is located on the side of the vibration system 3 facing away from the magnetic circuit system 2 , the front cover 42 forms a support member 4 , and the outer edge of the diaphragm 31 is connected between the front cover 42 and the housing 1 .

[0156] In this embodiment, the sound-emitting device 100 can be provided in a communication terminal device such as a mobile phone. The sound-emitting device 100 can be optionally used as a sound-emitting unit of a handset. The front cover 42 of the sound-emitting device 100 is at least partially located on the side of the vibration system 3 facing away from the magnetic circuit system 2, so that a vibration space is formed between the front cover 42 and the vibration system 3. The periphery of the front cover 42 is connected to the periphery of the vibration system 3. In order to facilitate the smooth sound generation of the sound-emitting device 100, a sound hole 421 connected to the vibration space can be provided in the front cover 42. Optionally, the sound hole 421 is provided directly opposite the diaphragm 31. In order to prevent dust, water vapor and other debris from entering the vibration space through the sound hole 421 and affecting the performance of the sound-emitting device 100, the sound-emitting device 100 further includes a mesh 5, which covers the sound hole 421.

[0157] At the same time, the front cover 42 forms a support member 4 for installing the second magnetic part 41. The second magnetic part 41 can be set on the side of the front cover 42 facing the vibration system 3, or on the side of the front cover 42 facing away from the vibration system 3. The second magnetic part 41 can also be installed in the installation cavity formed inside the front cover 42, which is not limited here.

[0158] See also Figure 5 and Figure 6In one embodiment, the sound-generating device 100 includes a module shell 43, and the module shell 43 includes a module upper shell 431 and a module lower shell 432 that cover each other. The module upper shell 431 and the module lower shell 432 enclose an installation space 433, and the magnetic circuit system 2 and the vibration system 3 are arranged in the installation space 433. The module upper shell 431 is located on the side of the vibration system 3 facing away from the magnetic circuit system 2. The module upper shell 431 forms a support member 4, and the second magnetic attraction portion 41 is arranged on the module upper shell 431.

[0159] In this embodiment, the sound-generating device 100 is provided with a module shell 43, which forms an installation space 433 for accommodating the magnetic circuit system 2, the vibration system 3 and at least part of the other structures of the sound-generating device 100, so that the sound-generating device 100 can be used alone as a sound-generating device.

[0160] In an embodiment of the present invention, in order to facilitate the disassembly and assembly of various components in the module shell 43, the module shell 43 includes a module upper shell 431 and a module lower shell 432 that cover each other, and the module upper shell 431 and the module lower shell 432 are detachably connected; the module upper shell 431 is located on the side of the vibration system 3 away from the magnetic circuit system 2, and serves as a support member 4 for fixing the second magnetic attraction part 41. The second magnetic attraction part 41 can be arranged on the side of the module upper shell 431 facing the diaphragm 31, or on the side of the module upper shell 431 facing away from the diaphragm 31. The second magnetic attraction part 41 can also be installed in the installation cavity formed inside the module upper shell 431, which is not limited here.

[0161] In order to enable the sound-emitting device 100 to produce sound smoothly, the module upper shell 431 and the vibration system 3 cooperate with each other to form a front sound cavity. The module shell 43 is provided with a sound outlet hole connecting the front sound cavity with the outside world. The sound outlet hole connecting the front sound cavity and the outside world can be opened on the module upper shell 431, or the module upper shell 431 and the module lower shell 432 can be spaced apart at some edges to form a sound outlet hole, which is not limited here.

[0162] The present invention further provides an electronic device comprising a sound-generating device 100 as described in any of the aforementioned embodiments. The specific structure of the sound-generating device 100 is similar to that described in the aforementioned embodiments. Since the present electronic device utilizes all of the technical solutions of all of the aforementioned embodiments, it at least has all of the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and therefore, no further details will be given here.

[0163] The electronic device can be a mobile phone, MP3, MP4, tablet computer, earphone, wearable device, etc. In the electronic device, the sound device 100 can be assembled into the housing of the electronic device in the form of a module or in the form of a single body.

[0164] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A sound-generating device, characterized in that: include: shell; A magnetic circuit system, the magnetic circuit system comprising a central magnetic portion and side magnetic portions spaced apart from each other, wherein the central magnetic portion and the side magnetic portions are spaced apart from each other to form a magnetic gap; A vibration system, wherein the vibration system is arranged on one side of the magnetic circuit system, the vibration system includes a diaphragm, a skeleton, a voice coil and a centering support plate, the outer edge of the diaphragm is connected to the housing, the inner edge of the diaphragm is connected to the skeleton, one end of the voice coil is connected to the skeleton, and the other end of the voice coil is arranged corresponding to the magnetic gap, the centering support plate is opposite to the diaphragm and is arranged at a distance, one end of the centering support plate is connected to the end of the skeleton away from the diaphragm, and the other end of the centering support plate is connected to the housing, the skeleton is provided with at least two separately provided connection structures, the connection structure is a metal part, the voice coil is provided with two lead parts, the centering support plate is provided with two conductive parts, and each of the connection structures is electrically connected to the corresponding lead part and conductive part respectively; and a support member, at least a portion of which is located on a side of the diaphragm facing away from the magnetic circuit system; In which, the skeleton is provided with a first magnetic attraction part, the support part is provided with a second magnetic attraction part, there is a first attraction force between the first magnetic attraction part and the second magnetic attraction part, and there is a second attraction force between the first magnetic attraction part and the magnetic circuit system. When in a non-working state, the vibration system is located in a balanced position between the second magnetic attraction part and the magnetic circuit system under the action of the combined force of the first attraction force and the second attraction force.

2. The sound-generating device according to claim 1, wherein: The connecting structure includes a first connecting arm and a second connecting arm, wherein the first connecting arm extends along a portion of the circumference of the voice coil, one end of the voice coil is connected to the first connecting arm, one end of the second connecting arm is connected to the first connecting arm, and the other end of the second connecting arm is bent and extended in a direction away from the diaphragm to connect to the centering arm; And / or, the sound-generating device has two short sides and two long sides that are arranged opposite to each other, and the skeleton includes two connecting structures, which are respectively arranged on the two short sides or the two long sides.

3. The sound-generating device according to claim 1, wherein: The skeleton further includes a main body structure, the main body structure and the diaphragm are stacked, one end of the connecting structure is connected to the main body structure, and the first magnetic attraction portion is provided on the main body structure.

4. The sound-generating device according to claim 1, wherein: The skeleton further includes a main body structure, which is provided with a hollow hole. The skeleton further includes a ball top portion, which is provided on the main body structure and covers the hollow hole. The first magnetic attraction portion is provided on the ball top portion.

5. The sound-generating device according to claim 1, wherein: The skeleton further includes a main body structure, a portion of the main body structure is recessed and extended toward a direction close to the magnetic circuit system to form a connecting frame, and one end of the voice coil close to the diaphragm is connected to the connecting frame.

6. The sound-generating device according to claim 1, wherein: The skeleton includes a first component and a second component that are separately arranged and both made of metal materials. The first magnetic part is connected to at least one of the first component and the second component. Along the vibration direction of the vibration system, the projection of the voice coil is located within the first component and the second component. At least part of the first component forms one of the connecting structures, and at least part of the second component forms the other connecting structure.

7. The sound-generating device according to claim 6, wherein: The first component includes a first support member and a first connecting member, and the second component includes a second support member and a second connecting member, wherein the first support member is insulated and connected to the second support member and are respectively arranged opposite to the central magnetic part, and the first connecting member and the second connecting member are both bent and extended in a direction away from the diaphragm and are respectively connected to the corresponding conductive parts.

8. The sound-generating device according to claim 1, wherein: The edge magnet portion includes a stacked edge magnet and an edge magnetic conductive plate, wherein the edge magnetic conductive plate is provided on a side of the edge magnet facing the vibration system; The centering support plate is arranged on a side of the edge magnetic conductive plate facing away from the diaphragm, and a gap is provided between at least a portion of the edge magnetic conductive plate and the shell, and the connecting structure is passed through the gap.

9. The sound-generating device according to claim 8, wherein: The side magnetic conductive plate and the shell are integrally provided; or, the side magnetic conductive plate and the shell are separate structures connected to each other.

10. The sound generating device according to claim 8, wherein: The side of the magnetic conductive plate facing the notch is provided with a first avoidance opening; And / or, the edge of the side magnet is provided with a second avoidance opening for avoiding the connecting structure.

11. The sound generating device according to claim 1, wherein: An accommodating space is defined between the shell and the magnetic circuit system. The centering support plate includes a first connecting portion, an elastic portion, and a second connecting portion that are connected to each other. The first connecting portion is connected to the shell, the elastic portion and the second connecting portion are located in the accommodating space, and the skeleton is connected to the second connecting portion.

12. The sound-generating device according to claim 1, wherein: There are two centering support plates, which are arranged on opposite sides of the frame; One of the centering supports is provided with two of the conductive portions; or each of the centering supports is provided with one of the conductive portions.

13. The sound-generating device according to claim 1, wherein: The magnetic circuit system also includes a magnetic yoke, which includes a main body and a bent portion arranged on the outer periphery of the main body. The central magnetic portion and the edge magnetic portion are both arranged on the side of the main body opposite to the vibration system. The bent portion bends and extends relative to the main body in a direction close to the vibration system. The bent portion, the outer shell and the edge magnetic portion jointly define an accommodating space for arranging at least part of the centering support plate.

14. The sound-generating device according to claim 1, wherein: The central magnetic portion includes a stacked central magnet and a central magnetic conductive plate, wherein the central magnetic conductive plate is located on a side of the central magnet facing the vibration system, and along the vibration direction of the vibration system, the central magnetic conductive plate is provided with a recessed area corresponding to the first magnetic attraction portion; Part of the central magnetic conductive plate is recessed in a direction away from the vibration system to form the recessed area; or the recessed area is a through-hole structure penetrating the central magnetic conductive plate.

15. The sound-generating device according to claim 1, wherein: The first magnetic attraction portion is a magnetic conductive sheet, and the material of the magnetic conductive sheet is SPCC or SUS430.

16. The sound-generating device according to claim 1, wherein: The first magnetic attraction portion is formed as a magnetic material coating provided on the surface of the frame.

17. The sound-generating device according to claim 1, wherein: At least a portion of the frame is made of magnetic conductive material to form the first magnetic attraction portion.

18. The sound-generating device according to claim 1, wherein: The first magnetic attraction portion is embedded in the frame.

19. The sound-generating device according to claim 1, wherein: The first magnetic attraction portion is provided on a surface of the frame facing the second magnetic attraction portion.

20. The sound-generating device according to claim 1, wherein: The first magnetic attraction portion is provided on a surface of the frame facing the magnetic circuit system.

21. The sound-generating device according to claim 1, wherein: The second magnetic attraction portion is a magnet, the second attraction force exists between the first magnetic attraction portion and the central magnetic portion, and the magnetization direction of the second magnetic attraction portion is opposite to the magnetization direction of the central magnetic portion; And / or, the second magnetic attraction portion is circular, elliptical or polygonal; And / or, the second magnetic attraction portion is arranged opposite to the first magnetic attraction portion.

22. The sound-generating device according to claim 1, wherein: The second magnetic attraction portion is provided on a side of the support member facing the first magnetic attraction portion.

23. The sound-generating device according to claim 1, wherein: The second magnetic attraction portion is disposed on a side of the support member facing away from the first magnetic attraction portion.

24. The sound-generating device according to claim 1, wherein: An installation cavity is provided in the support member, and the second magnetic attraction portion is provided in the installation cavity.

25. The sound-generating device according to claim 1, wherein: A mounting groove is provided on a side of the support member facing the diaphragm, and the second magnetic attraction portion is arranged in the mounting groove.

26. The sound-generating device according to claim 1, wherein: There are at least two second magnetic attraction parts, and the at least two second magnetic attraction parts are arranged on the same side or different sides of the support member.

27. The sound generating device according to any one of claims 1 to 26, characterized in that The sound-generating device is provided with a front cover, which is located on the side of the vibration system facing away from the magnetic circuit system. The front cover forms the support member, and the outer edge of the diaphragm is connected between the front cover and the housing.

28. The sound generating device according to any one of claims 1 to 26, characterized in that The sound-generating device includes a module shell, which includes a module upper shell and a module lower shell covering each other, and the module upper shell and the module lower shell enclose an installation space. The magnetic circuit system and the vibration system are arranged in the installation space. The module upper shell is located on the side of the vibration system facing away from the magnetic circuit system. The module upper shell forms the support member, and the second magnetic attraction part is arranged on the module upper shell.

29. An electronic device, characterized in that: The electronic device comprises the sound emitting device as claimed in any one of claims 1 to 28.

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