Sound production monomer and sound production module

Abstract

The utility model discloses a sounding monomer and sounding module, relates to the sound energy conversion technology field, the sounding monomer comprises a magnetic circuit system and a vibration system, the magnetic circuit system comprises a center magnetic circuit and a side magnetic circuit, a first magnetic gap and a second magnetic gap are formed between the center magnetic circuit and the side magnetic circuit, the center magnetic circuit comprises a center magnet, and the side magnetic circuit comprises a second magnet. Each side magnetic circuit comprises a side magnet, and the magnetizing directions of the center magnet and the side magnets are opposite; the vibration system comprises a vibrating diaphragm, a voice coil assembly and a rigid connecting piece, the voice coil assembly comprises a first voice coil located in the first magnetic gap and a second voice coil located in the second magnetic gap, one side of the first voice coil is connected with the vibrating diaphragm, and the other side of the first voice coil is connected with the second voice coil through the rigid connecting piece; the current directions of the first voice coil and the second voice coil are opposite; compared with the mode that a single voice coil is adopted to drive the vibrating diaphragm to vibrate, as the driving force for driving the vibrating diaphragm to vibrate is jointly provided by the double voice coils composed of the first voice coil and the second voice coil, the performance of the sound production monomer is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of sound energy conversion technology, and in particular to a sound-generating unit and a sound-generating module. Background Technology

[0002] The trend towards thinner and smaller smart products presents a significant challenge to the acoustic performance of speakers due to limited internal space. Reducing the size of the speaker can weaken its performance. Traditionally, improving speaker performance involves increasing the size of the magnet, but this also increases the speaker's size, making it unsuitable for the device. Conversely, reducing the speaker's size reduces the internal space, potentially limiting the space for the magnet. This can lead to the use of smaller magnets, which in turn can result in the speaker's performance failing to meet the overall device requirements. Utility Model Content

[0003] The main purpose of this invention is to propose a sound-generating unit and a sound-generating module, aiming to solve the problem of how to enhance the performance of loudspeakers.

[0004] To achieve the above objectives, the present invention proposes a sound-generating unit.

[0005] In one embodiment, a magnetic circuit system is provided, the magnetic circuit system including a central magnetic circuit and a side magnetic circuit, a first magnetic gap and a second magnetic gap being formed between the central magnetic circuit and the side magnetic circuit, the central magnetic circuit including a central magnet, the side magnetic circuit including a side magnet, and the magnetization directions of the central magnet and the side magnet being opposite.

[0006] A vibration system comprising a diaphragm, a voice coil assembly, and a rigid connector. The voice coil assembly comprises a first voice coil located within a first magnetic gap and a second voice coil located within a second magnetic gap. One side of the first voice coil is connected to the diaphragm, and the other side of the first voice coil is connected to the second voice coil via the rigid connector. The current directions of the first and second voice coils are opposite.

[0007] In one embodiment, the central magnetic circuit further includes a central magnetic yoke and a central magnetic plate disposed on both sides of the central magnet, and the side magnetic circuit further includes a side magnetic yoke and a side magnetic plate disposed on both sides of the side magnet. A first magnetic gap is formed between the side magnetic plate and the central magnetic plate, and a second magnetic gap is formed between the side magnetic yoke and the central magnetic yoke.

[0008] In one embodiment, the central magnetic yoke includes a first body and a first flange, the first flange being bent from the outer periphery of the first body toward the diaphragm, and the central magnet having a first clearance groove on the side facing the first flange for avoiding the first flange;

[0009] And / or,

[0010] The side-guided magnetic yoke includes a second body and a second flange. The second flange bends from the inner periphery of the second body toward the diaphragm. The side magnet is provided with a second clearance groove on the side facing the second flange to avoid the second flange.

[0011] In one embodiment, the sound-generating unit further includes a back cover, and the central magnetic yoke and the side magnetic yoke are both disposed on the side of the back cover away from the diaphragm.

[0012] In one embodiment, the rear cover protrudes in a direction away from the diaphragm to form an annular clearance groove, the opening of the annular clearance groove is disposed facing the second magnetic gap and communicating with the second magnetic gap, and the annular clearance groove is used to avoid the second voice coil;

[0013] And / or, a leakage hole is provided on the side guide magnetic yoke, and an isolation mesh hole corresponding to and communicating with the leakage hole is provided on the rear cover.

[0014] In one embodiment, the sound-generating unit further includes a housing and a centering support. The vibration system and the magnetic circuit system are respectively connected to both ends of the housing. The outer periphery of the diaphragm is connected to the housing. The centering support includes a fixing part, a mounting part, and a spring arm part connecting the fixing part and the mounting part. One side of the fixing part is connected to the first voice coil, and the other side of the fixing part is connected to the rigid connector. The mounting part is connected to the housing, and the side of the rigid connector opposite to the fixing part is connected to the second voice coil.

[0015] In one embodiment, the rigid connector includes a connecting portion and a supporting portion. The supporting portion is disposed on the side of the connecting portion facing the centering support and is connected to the centering support. The side of the connecting portion away from the supporting portion is connected to the second voice coil.

[0016] In one embodiment, the connecting part is an annular connecting part, and the number of supporting parts is multiple, with the multiple supporting parts arranged at intervals along the circumference of the annular connecting part.

[0017] In one embodiment, the fixing part is an annular fixing part, and the centering support further includes a first pad and a second pad. The first pad and the second pad are respectively disposed on both sides of the annular fixing part. The first voice coil is electrically connected to the first pad, and the second voice coil is electrically connected to the second pad.

[0018] This utility model also proposes a sound-generating module, which includes a housing and the aforementioned sound-generating unit, wherein the sound-generating unit is disposed within the housing.

[0019] The technical solution of this utility model uses a central magnet and a side magnet to form a first magnetic gap and a second magnetic gap, and sets a first voice coil in the first magnetic gap and a second voice coil in the second magnetic gap. Since the current directions of the first voice coil and the second voice coil are opposite, the driving force generated by the first voice coil and the second voice coil on the diaphragm is in the same direction. Since the first voice coil and the second voice coil are connected by a rigid connector, the first voice coil and the second voice coil can work together to act on the diaphragm and drive the diaphragm to vibrate. Compared with using a single voice coil to drive the diaphragm to vibrate, since the driving force for the diaphragm to vibrate is provided by the dual voice coils composed of the first voice coil and the second voice coil, the performance of the sound-producing unit is effectively improved. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the sound-generating unit provided by this utility model;

[0022] Figure 2 A structural schematic diagram of the sound-generating unit provided by this utility model from another perspective;

[0023] Figure 3 An exploded structural diagram of an embodiment of the sound-generating unit provided by this utility model;

[0024] Figure 4 A cross-sectional structural schematic diagram of an embodiment of the sound-generating unit provided by this utility model;

[0025] Figure 5 A schematic diagram of the structure of an embodiment of the first voice coil, the second voice coil, and the centering support provided by this utility model;

[0026] Figure 6 for Figure 5A top-view structural diagram;

[0027] Figure 7 A structural schematic diagram of the first and second voice coils and the centering support provided by this utility model from another perspective;

[0028] Figure 8 for Figure 7 A top-view structural diagram;

[0029] Figure 9 A schematic diagram of the BL curve of the sound-generating unit provided by this utility model and the traditional single-layer voice coil.

[0030] Explanation of icon numbers:

[0031] 100. Sound-generating unit; 1. Magnetic circuit system; 11. Central magnetic circuit; 111. Central magnet; 1111. First clearance groove; 112. Central magnetic plate; 113. Central magnetic yoke; 1131. First body; 1132. First flange; 12. Side magnetic circuit; 121. Side magnet; 1211. Second clearance groove; 122. Side magnetic yoke; 1221. Second body; 1222. Second flange; 1223. Leakage hole; 123. Side magnetic plate; 131. First magnet 1. Gap; 132. Second magnetic gap; 2. Vibration system; 21. Diaphragm; 211. Reinforcing part; 22. Voice coil assembly; 221. First voice coil; 222. Second voice coil; 23. Rigid connector; 231. Connecting part; 2311. Groove; 232. Support part; 3. Rear cover; 31. Annular clearance groove; 32. Isolation mesh; 4. Housing; 5. Centering support; 51. Fixing part; 52. Mounting part; 53. Spring arm part; 54. First solder pad; 55. Second solder pad.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] The trend towards thinner and smaller smart products presents a significant challenge to the acoustic performance of speakers due to limited internal space. Reducing the size of the speaker can weaken its performance. Traditionally, improving speaker performance involves increasing the size of the magnet, but this also increases the speaker's size, making it unsuitable for the device. Conversely, reducing the speaker's size reduces the internal space, potentially limiting the space for the magnet. This can lead to the use of smaller magnets, which in turn can result in the speaker's performance failing to meet the overall device requirements.

[0037] Therefore, it is necessary to propose a sound-generating unit and a sound-generating module, which aims to solve how to enhance the performance of loudspeakers.

[0038] Please see Figures 1 to 4 In one embodiment of this utility model, the sound-generating unit 100 includes a magnetic circuit system 1 and a vibration system 2. The magnetic circuit system 1 includes a central magnetic circuit 11 and a side magnetic circuit 12. A first magnetic gap 131 and a second magnetic gap 132 are formed between the central magnetic circuit 11 and the side magnetic circuit 12. The central magnetic circuit 11 includes a central magnet 111, and the side magnetic circuit 12 includes a side magnet 121. The magnetization directions of the central magnet 111 and the side magnet 121 are opposite. The vibration system 2 includes a diaphragm 21, a voice coil assembly 22, and a rigid connector 23. The voice coil assembly 22 includes a first voice coil 221 located in the first magnetic gap 131 and a second voice coil 222 located in the second magnetic gap 132. One side of the first voice coil 221 is connected to the diaphragm 21, and the other side of the first voice coil 221 is connected to the second voice coil 222 through the rigid connector 23. The current directions of the first voice coil 221 and the second voice coil 222 are opposite.

[0039] The sound-generating unit 100 of this invention can be a loudspeaker unit, and can be used in the sound-generating module of electronic devices, such as computers, mobile phones, and smart wearable devices. This embodiment uses a loudspeaker unit as an example for illustration.

[0040] The technical solution of this utility model uses a central magnet 111 and a side magnet 121 to form a first magnetic gap 131 and a second magnetic gap 132. A first voice coil 221 is set in the first magnetic gap 131 and a second voice coil 222 is set in the second magnetic gap 132. Since the current directions of the first voice coil 221 and the second voice coil 222 are opposite, the driving force generated by the first voice coil 221 and the second voice coil 222 on the diaphragm 21 is in the same direction. Since the first voice coil 221 and the second voice coil 222 are connected by a rigid connector 23, the first voice coil 221 and the second voice coil 222 can work together to drive the diaphragm 21 and drive the diaphragm 21 to vibrate. Compared with using a single voice coil to drive the diaphragm 21 to vibrate, since the driving force for the diaphragm 21 to vibrate is provided by the dual voice coils composed of the first voice coil 211 and the second voice coil 222, the driving force on the diaphragm 21 is enhanced, and the performance of the sound-generating unit 100 is effectively improved. It should be noted that the magnetization directions of the central magnet 111 and the side magnet 121 are opposite. The first voice coil 221 and the second voice coil 222 effectively utilize the closed-loop magnetic lines of force of the central magnetic circuit 11 and the side magnetic circuit 12, which enhances the driving force of the first voice coil 221 and the second voice coil 222 on the diaphragm 21 and improves the performance of the sound-generating unit 100.

[0041] It should be noted that when the first voice coil 211 and the second voice coil 222 are energized, they reciprocate within the first magnetic gap 131 and the second magnetic gap 132, respectively, cutting magnetic lines of force, causing the diaphragm 21 to vibrate up and down, thereby inducing air to produce sound and completing the energy conversion between electroacoustic and magnetic fields. Additionally, the side magnet 121 surrounds the central magnet 111 and is spaced apart from it, and the first magnetic gap 131 and the second magnetic gap 132 are arranged along the vibration direction of the vibration system 2.

[0042] According to one embodiment of the present invention, a reinforcing part 211 is provided on the diaphragm 21. By providing the reinforcing part 211, the sound-generating unit 100 has better directivity and transient response in the reproduction of high-frequency signals.

[0043] According to another embodiment of the present invention, the first voice coil 221 is a single-ring voice coil; the use of a single-ring voice coil helps to reduce the thickness of the sound-generating unit 100; according to yet another embodiment of the present invention, the second voice coil 222 is a single-ring voice coil; the use of a single-ring voice coil helps to reduce the thickness of the sound-generating unit 100.

[0044] Please see Figure 3 and Figure 4 In one embodiment, the central magnetic circuit 11 further includes a central magnetic yoke 113 and a central magnetic plate 112 disposed on both sides of the central magnet 111, and the side magnetic circuit 12 further includes a side magnetic yoke 122 and a side magnetic plate 123 disposed on both sides of the side magnet 121. A first magnetic gap 131 is formed between the side magnetic plate 123 and the central magnetic plate 112, and a second magnetic gap 132 is formed between the side magnetic yoke 122 and the central magnetic yoke 113. The side magnetic plate 123 surrounds the periphery of the central magnetic plate 112 and is spaced apart from the central magnetic plate 112 to form a first magnetic gap 131. The side magnetic yoke 122 surrounds the periphery of the central magnetic yoke 113 and is spaced apart from the central magnetic yoke 113 to form a second magnetic gap 132. The side magnetic plate 123 and the central magnetic plate 112 are used to conduct magnetism to ensure the magnetic flux of the first magnetic gap 131. Similarly, the side magnetic yoke 122 and the central magnetic yoke 113 are used to conduct magnetism to ensure the magnetic flux of the second magnetic gap 132.

[0045] It should be noted that the number of side magnetic plates 123 can be one or more, and there is no restriction here. Similarly, the number of center magnetic plates 112 can also be one or more. It should also be noted that both the side magnetic yokes 122 and the center magnetic yokes 113 are made of metal.

[0046] According to one embodiment of the present invention, the central magnetic yoke 113 includes a first body 1131 and a first flange 1132. The first flange 1132 bends from the outer periphery of the first body 1131 toward the diaphragm 21. The central magnet 111 is provided with a first clearance groove 1111 on the side facing the first flange 1132 to avoid the first flange 1132. By providing the first flange 1132, it is beneficial to improve the driving force factor BL of the second voice coil 222, and also to make the driving force trend of the second voice coil 222 on the diaphragm 21 flatter, thereby reducing the distortion of the sound-generating unit 100.

[0047] According to one embodiment of the present invention, the side-guided magnetic yoke 122 includes a second body 1221 and a second flange 1222. The second flange 1222 bends from the inner periphery of the second body 1221 toward the diaphragm 21. A second clearance groove 1211 for avoiding the second flange 1222 is provided on the side of the side magnet 121 facing the second flange 1222. By providing the second flange 1222, it is beneficial to improve the driving force factor BL of the second voice coil 222, and also to make the driving force of the second voice coil 222 on the diaphragm 21 flatter, thereby reducing the distortion of the sound-generating unit 100.

[0048] Please refer to Figure 9 Curve a represents the BL value curve for a single-layer voice coil (100), and curve b represents the BL value curve for a traditional single-layer voice coil. Figure 9The horizontal axis represents displacement in mm, and the vertical axis represents BL in Wb / m. Through the cooperation of the first flange 1132 and the second flange 1222, the driving force factor BL of the second voice coil 222 can be further improved, making the driving force of the second voice coil 222 on the diaphragm 21 more even, thereby reducing the distortion of the sound-generating unit 100. It should be noted that the central magnet 111 is provided with a first clearance groove 1111 corresponding to the first flange 1132, which not only avoids interference between the central magnet 111 and the first flange 1132, but also effectively reduces the thickness of the sound-generating unit 100; similarly, the side magnet 121 is provided with a second clearance groove 1211 corresponding to the second flange 1222, which not only avoids interference between the side magnet 121 and the second flange 1222, but also effectively reduces the thickness of the sound-generating unit 100.

[0049] Please see Figures 1 to 3 In one embodiment, the sound-generating unit 100 further includes a rear cover 3, on which the central magnetic yoke 113 and the side magnetic yoke 122 are disposed. The rear cover 3 is used to fix the central magnetic yoke 113 and the side magnetic yoke 122, facilitating the assembly of the sound-generating unit 100. It should be noted that the rear cover 3 is a metal rear cover.

[0050] Please see Figures 2 to 4 According to one embodiment of the present invention, the rear cover 3 protrudes in a direction away from the diaphragm 21 to form an annular relief groove 31. The groove opening of the annular relief groove 31 is set towards the second magnetic gap 132 and communicates with the second magnetic gap 132. The annular relief groove 31 is used to avoid the second voice coil 222. By forming an annular relief groove 31 on the rear cover 3 to avoid the second voice coil 222, sufficient downward vibration space is provided for the second voice coil 222, which effectively improves the performance of the sound-generating unit 100.

[0051] According to one embodiment of this utility model, a leakage hole 1223 is provided on the side guide magnetic yoke 122, and an isolation mesh hole 32 corresponding to and communicating with the leakage hole 1223 is provided on the rear cover 3. By opening the isolation mesh hole 32 on the rear cover 3 and communicating with the leakage hole 1223, the air pressure is balanced.

[0052] According to one embodiment of this utility model, the vibration system 2 further includes multiple balancing diaphragms. These balancing diaphragms are all disposed on the side of the side guide yoke 122 away from the diaphragm 21. One end of each balancing diaphragm is connected to the side guide yoke 122, and the other end of each balancing diaphragm is connected to the second voice coil 222. The multiple balancing diaphragms are evenly spaced along the circumference of the second voice coil 222, thereby balancing the second voice coil 222. The side guide yoke 122 has clearance holes to avoid the balancing diaphragms, and the number of clearance holes corresponds to the number of balancing diaphragms. It should be noted that there are four balancing diaphragms, which are located at the four corners of the second voice coil 222.

[0053] Please see Figure 3 , Figure 5 and Figure 7 In one embodiment, the sound-generating unit 100 further includes a housing 4 and a centering support 5. The vibration system 2 and the magnetic circuit system 1 are respectively connected to the two ends of the housing 4. The outer periphery of the diaphragm 21 is connected to the housing 4. The centering support 5 includes a fixing part 51, a mounting part 52, and a spring arm part 53 connecting the fixing part 51 and the mounting part 52. One side of the fixing part 51 is connected to the first voice coil 221, and the other side of the fixing part 51 is connected to the rigid connector 23. The mounting part 52 is connected to the housing 4, and the side of the rigid connector 23 facing away from the fixing part 51 is connected to the second voice coil 222. The centering support 5 serves to center and support the first voice coil 221, preventing polarization and improving its vibration stability. Since the first and second voice coils 221 are connected by a rigid connector 23, the centering support 5 also centers and supports the second voice coil 222, preventing polarization and improving its vibration stability. It should be noted that the side magnet 121 includes multiple side magnet blocks, spaced circumferentially along the central magnet 111. A clearance space is formed between any two adjacent side magnet blocks, with the spring arm 53 corresponding to one clearance space to prevent interference between the centering support 5 and the side magnet 121.

[0054] According to one embodiment of the present invention, there are multiple spring arms 53, which are arranged at intervals along the circumference of the fixing part 51. The number of mounting parts 52 is the same as that of the spring arms 53, and they are arranged in a one-to-one correspondence. By providing multiple spring arms 53 and mounting parts 52, the centering support plate 5 further enhances its centering and supporting function for the first voice coil 221 and the second voice coil 222.

[0055] According to another embodiment of the present invention, a magnetic component is provided on the centering support plate 5. The magnetic component can be made of permanent magnet material, such as ferrite, precious metal alloy, etc.; the magnetic component can also be made of magnetically conductive material; the magnetic component can also be made of soft magnetic material, such as pure iron, nickel, etc. The magnetic component is subjected to static magnetic force, thereby effectively improving the sensitivity of the sound-generating unit.

[0056] Please see Figure 3 and Figure 4In one embodiment, the rigid connector 23 includes a connecting portion 231 and a supporting portion 232. The supporting portion 232 is disposed on the side of the connecting portion 231 facing the centering support 5 and connected to the centering support 5. The side of the connecting portion 231 away from the supporting portion 232 is connected to the second voice coil 222. The supporting portion 232 extends along the vibration direction of the vibration system 2, thereby not only connecting the first voice coil 221 and the second voice coil 222 through the rigid connector 23, but also separating the first voice coil 221 and the second voice coil 222, so that the first voice coil 221 and the second voice coil 222 can be located in the first magnetic gap 131 and the second magnetic gap 132, respectively.

[0057] In one embodiment, the connecting portion 231 is an annular connecting portion, and the number of support portions 232 is multiple, with the multiple support portions 232 arranged at intervals along the circumference of the connecting portion 231. By providing multiple support portions 232, the reliability and strength of the connection between the first voice coil 221 and the second voice coil 222 are enhanced.

[0058] According to one embodiment of the present invention, a plurality of support portions 232 are arranged at intervals along the circumference of the connecting portion 231, and the connecting portion 231 is provided with grooves 2311, the number of grooves 2311 being the same as the number of support portions 232 and corresponding one-to-one. By providing grooves, it is helpful to reduce the weight of the rigid connecting member 23.

[0059] Please see Figures 5 to 8 In one embodiment, the fixing part 51 is an annular fixing part, and the centering support piece 5 further includes a first pad 54 and a second pad 55. The first pad 54 and the second pad 55 are respectively disposed on both sides of the fixing part 51. The first voice coil 221 is electrically connected to the first pad 54, and the second voice coil 222 is electrically connected to the second pad 55. Specifically, the first pad 54 is disposed on the side of the fixing part 51 facing the first voice coil 221, and the second pad 55 is disposed on the side of the fixing part 51 facing the second voice coil 222.

[0060] Compared to using a circuit board connected to the voice coil, the sound-generating unit 100 in this embodiment reduces its thickness by providing a first pad 54 and a second pad 55 on the fixing portion 51 of the centering support 5. It should be noted that there are two first pads 54 and two second pads 55. Furthermore, the centering support 5 not only achieves the electrical connection between the first voice coil 221 and the second voice coil 222, but also the electrical connection between the first voice coil 221 and the second voice coil 222 and external circuitry.

[0061] This utility model also proposes a sound-generating module, which includes a housing and the aforementioned sound-generating unit 100, with the sound-generating unit 100 disposed within the housing. The sound-generating module can be a speaker module. The sound-generating module can be applied to electronic devices such as computers, mobile phones, and smart wearable devices. Since the sound-generating module adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0062] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A sound producing monomer, characterized in that, include: A magnetic circuit system, comprising a central magnetic circuit and a side magnetic circuit, wherein a first magnetic gap and a second magnetic gap are formed between the central magnetic circuit and the side magnetic circuit, the central magnetic circuit comprising a central magnet, the side magnetic circuit comprising a side magnet, and the magnetization directions of the central magnet and the side magnet being opposite; A vibration system comprising a diaphragm, a voice coil assembly, and a rigid connector. The voice coil assembly comprises a first voice coil located within a first magnetic gap and a second voice coil located within a second magnetic gap. One side of the first voice coil is connected to the diaphragm, and the other side of the first voice coil is connected to the second voice coil via the rigid connector. The current directions of the first and second voice coils are opposite.

2. The sound-generating unit as described in claim 1, characterized in that, The central magnetic circuit further includes a central magnetic yoke and a central magnetic plate disposed on both sides of the central magnet, and the side magnetic circuit further includes a side magnetic yoke and a side magnetic plate disposed on both sides of the side magnet. A first magnetic gap is formed between the side magnetic plate and the central magnetic plate, and a second magnetic gap is formed between the side magnetic yoke and the central magnetic yoke.

3. The sound-generating unit as described in claim 2, characterized in that, The central magnetic yoke includes a first body and a first flange. The first flange bends from the outer periphery of the first body toward the diaphragm. The central magnet is provided with a first clearance groove on the side facing the first flange to avoid the first flange. And / or, The side-guided magnetic yoke includes a second body and a second flange. The second flange bends from the inner periphery of the second body toward the diaphragm. The side magnet is provided with a second clearance groove on the side facing the second flange to avoid the second flange.

4. The sound producing monomer of claim 2, wherein, The sound-generating unit also includes a back cover, and the central magnetic yoke and the side magnetic yoke are both disposed on the side of the back cover away from the diaphragm.

5. The sound-generating unit as described in claim 4, characterized in that, The rear cover protrudes away from the diaphragm to form an annular clearance groove. The opening of the annular clearance groove is oriented toward the second magnetic gap and communicates with the second magnetic gap. The annular clearance groove is used to avoid the second voice coil. And / or, a leakage hole is provided on the side guide magnetic yoke, and an isolation mesh hole corresponding to and communicating with the leakage hole is provided on the rear cover.

6. The sound-generating unit as described in any one of claims 1 to 5, characterized in that, The sound-generating unit also includes a housing and a centering support. The vibration system and the magnetic circuit system are respectively connected to the two ends of the housing. The outer periphery of the diaphragm is connected to the housing. The centering support includes a fixing part, a mounting part, and a spring arm part connecting the fixing part and the mounting part. One side of the fixing part is connected to the first voice coil, and the other side of the fixing part is connected to the rigid connector. The mounting part is connected to the housing, and the side of the rigid connector opposite to the fixing part is connected to the second voice coil.

7. The sound producing monomer of claim 6, wherein, The rigid connector includes a connecting part and a supporting part. The supporting part is disposed on the side of the connecting part facing the centering support and is connected to the centering support. The side of the connecting part away from the supporting part is connected to the second voice coil.

8. The sound producing monomer of claim 7, wherein, The connecting part is an annular connecting part, and there are multiple supporting parts, which are arranged at intervals along the circumference of the annular connecting part.

9. The sound producing monomer of claim 6, wherein, The fixing part is an annular fixing part, and the centering support plate further includes a first pad and a second pad. The first pad and the second pad are respectively disposed on both sides of the annular fixing part. The first voice coil is electrically connected to the first pad, and the second voice coil is electrically connected to the second pad.

10. A sound production module, comprising: The sound-generating module includes a housing and a sound-generating unit as described in any one of claims 1 to 9, wherein the sound-generating unit is disposed within the housing.

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