Sound production monomer and sound production module

Abstract

The invention discloses a sound production monomer and a sound production module, and relates to the technical field of sound energy conversion, the sound production monomer comprises a magnetic circuit system, a first vibration system and a second vibration system, the magnetic circuit system forms a main magnetic gap and an auxiliary magnetic gap, and the main magnetic gap comprises a first magnetic gap and a second magnetic gap which are arranged at an interval along a second direction; the first vibration system comprises a first vibrating diaphragm, a first voice coil and a second voice coil, the first voice coil and the second voice coil are located in the first magnetic gap and the second magnetic gap respectively, and the first voice coil and the second voice coil are both connected with the first vibrating diaphragm; the first vibration system and the second vibration system are located on the two sides of the magnetic circuit system respectively in the first direction, the second vibration system comprises a second vibrating diaphragm and a third voice coil, the third voice coil is arranged in the auxiliary magnetic gap, and the third voice coil is connected with the second vibrating diaphragm; and the first vibration system and the second vibration system can radiate sound waves with opposite phases outwards, so that far-field offset of the sound is realized, and the privacy of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sound energy conversion, and in particular to a sound-generating monomer and a sound-generating module. Background Art

[0002] With the widespread use of smart devices, more and more people have gradually realized the importance of privacy. Therefore, users will also consider privacy as an important consideration when choosing products. At present, traditional speakers only have the function of simple sound emission. This means that when traditional speakers are used, in addition to the user, other people around the user can also hear the sound emitted by the speaker. This results in poor privacy of traditional speakers and cannot be used in call scenarios with a high degree of confidentiality. Summary of the invention

[0003] The main purpose of the present invention is to propose a sound unit and a sound module, aiming to solve the problem of poor privacy of existing speakers.

[0004] To achieve the above object, the sound-emitting unit proposed in the present invention comprises:

[0005] A magnetic circuit system, wherein the magnetic circuit system is formed with a main magnetic gap and an auxiliary magnetic gap, wherein the main magnetic gap and the auxiliary magnetic gap are arranged along a first direction, and the main magnetic gap includes a first magnetic gap and a second magnetic gap spaced apart along a second direction;

[0006] a first vibration system, the first vibration system vibrates along the first direction, the first vibration system comprises a first diaphragm, a first voice coil and a second voice coil, the first voice coil and the second voice coil are respectively located in the first magnetic gap and the second magnetic gap, and the first voice coil and the second voice coil are both connected to the first diaphragm;

[0007] a second vibration system, the second vibration system vibrates along the first direction, the first vibration system and the second vibration system are respectively located on both sides of the magnetic circuit system along the first direction, the second vibration system comprises a second diaphragm and a third voice coil, the third voice coil is arranged in the auxiliary magnetic gap, and the third voice coil is connected to the second diaphragm;

[0008] A long side of the first voice coil and / or the second voice coil extends along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0009] In one embodiment, the magnetic circuit system includes a magnetic circuit unit and a magnetic conductive plate assembly, the magnetic circuit unit includes a central magnetic circuit, an intermediate magnetic circuit arranged on the periphery of the central magnetic circuit, and a side magnetic circuit arranged on the periphery of the intermediate magnetic circuit, the intermediate magnetic circuit includes a first intermediate magnetic circuit and a second intermediate magnetic circuit respectively arranged on both sides of the central magnetic circuit along the second direction, the first magnetic gap surrounds the first intermediate magnetic circuit, and the second magnetic gap surrounds the second intermediate magnetic circuit; the magnetic conductive plate assembly is arranged on the side of the magnetic circuit unit away from the first diaphragm, and the magnetic conductive plate assembly forms the auxiliary magnetic gap.

[0010] In one embodiment, the magnetic conductive plate assembly includes a middle magnetic conductive plate and a side magnetic conductive plate, the center magnetic circuit, the first intermediate magnetic circuit and the second intermediate magnetic circuit are all arranged on the middle magnetic conductive plate on a side away from the first diaphragm, the side magnetic circuit is arranged on the side magnetic conductive plate on a side away from the first diaphragm, and the side magnetic conductive plates are arranged on the periphery of the middle magnetic conductive plate and are spaced apart from the middle magnetic conductive plate to form the auxiliary magnetic gap.

[0011] In one embodiment, the central magnetic circuit includes a central magnet and a central magnetic conductive plate, the first intermediate magnetic circuit includes a first intermediate magnet and a first intermediate magnetic conductive plate, the second intermediate magnetic circuit includes a second intermediate magnet and a second intermediate magnetic conductive plate, and the side magnetic circuit includes a side magnet and a side magnetic conductive plate. The first intermediate magnetic conductive plate is arranged on the side of the first intermediate magnet facing the first diaphragm, the second intermediate magnetic conductive plate is arranged on the side of the second intermediate magnet facing the first diaphragm, and the side magnetic conductive plate is arranged on the side of the side magnet facing the first diaphragm. The central magnet, the first intermediate magnet, the second intermediate magnet and the side magnet are all magnetized along the first direction, the magnetization direction of the central magnet is the same as the magnetization direction of the side magnet, the magnetization directions of the first intermediate magnet and the second intermediate magnet are opposite to the magnetization direction of the central magnet, and both ends of the central magnetic conductive plate along the third direction are connected to the side magnetic conductive plates.

[0012] In one embodiment, the sound unit also includes a first shell and a second shell, the first shell and the second shell are respectively arranged on both sides of the magnetic circuit system along the first direction, the outer periphery of the first diaphragm is connected to the first shell, and the outer periphery of the second diaphragm is connected to the second shell.

[0013] In one embodiment, the sound unit also includes a first elastic support member and a second elastic support member, one end of the first elastic support member is connected to the first shell, and the first voice coil and the second voice coil are both connected to the other end of the first elastic support member; one end of the second elastic support member is connected to the second shell, and the third voice coil is connected to the other end of the second elastic support member.

[0014] In one embodiment, the first elastic support member includes a first centering support plate and a second centering support plate, the first centering support plate and the second centering support plate are arranged at intervals along the third direction, the first centering support plate includes a first fixing portion, two first elastic arm portions and two first mounting portions, the two first elastic arm portions are respectively arranged at two ends of the first fixing portion, the two first mounting portions are respectively arranged corresponding to one first elastic arm portion, each first mounting portion is connected to the first shell, and the first fixing portion is connected to the first voice coil and the second voice coil; the second centering support plate includes a second fixing portion, two second elastic arm portions and two second mounting portions, the two second elastic arm portions are respectively arranged at two ends of the second fixing portion, the two second mounting portions are respectively arranged corresponding to one second elastic arm portion, each second mounting portion is connected to the first shell, and the second fixing portion is connected to the first voice coil and the second voice coil;

[0015] The second elastic support member also includes at least two auxiliary centering support plates, each of which includes an auxiliary fixing portion, an auxiliary mounting portion, and an auxiliary elastic arm portion connecting the auxiliary fixing portion and the auxiliary mounting portion, each of the auxiliary fixing portions is connected to the third voice coil, and each of the auxiliary mounting portions is connected to the second shell.

[0016] In one embodiment, a pad component is provided on the first centering support plate and the second centering support plate, and the pad component includes a first pad, a second pad, a third pad and a fourth pad, the first pad and the second pad are arranged on the first mounting portion, the first voice coil and the second voice coil are connected in series, the lead of the first voice coil is electrically connected to the first pad, and the lead of the second voice coil is electrically connected to the second pad; a third pad and a fourth pad are respectively provided on any two of the auxiliary mounting portions, and the third pad and the fourth pad are electrically connected to the lead of the third voice coil.

[0017] In one embodiment, the sound-emitting unit includes a first working state, in which the first vibration system and the second vibration system radiate sound waves with opposite phases.

[0018] In one embodiment, the sound-emitting unit includes a second working state, in which the first vibration system and the second vibration system radiate sound waves of the same phase outwardly.

[0019] The present invention further provides a sound module, which includes a shell and the above-mentioned sound unit, and the sound unit is arranged in the shell.

[0020] In one embodiment, the shell and the sound-emitting unit form a first sound cavity and a second sound cavity, the first sound cavity and the second sound cavity are respectively arranged on both sides of the sound-emitting unit along the vibration direction of the first vibration system, the shell is provided with a first sound hole connected to the first sound cavity, and the shell is provided with a second sound hole connected to the second sound cavity.

[0021] In one embodiment, the sound module has a first mode, in which the first sound hole and the second sound hole radiate sound waves with opposite phases.

[0022] In one embodiment, the sound module has a second mode, in which the first sound hole and the second sound hole radiate sound waves with the same phase outward.

[0023] The technical solution of the present invention adopts a first vibration system and a second vibration system to independently vibrate and produce sound, wherein the first vibration system is driven by a first voice coil and a second voice coil to drive a first diaphragm to vibrate and produce sound, and the second vibration system is driven by a third voice coil to drive a second diaphragm to vibrate and produce sound; the first vibration system and the second vibration system can radiate sound waves of opposite phases outward, and use the dipole effect to achieve far-field cancellation of sound, while people located near the sound-emitting unit can still hear the sound clearly, thereby increasing the privacy of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 A schematic structural diagram of an embodiment of a sound-emitting unit provided by the present invention;

[0026] Figure 2 A schematic structural diagram of another perspective of an embodiment of a sound-emitting unit provided by the present invention;

[0027] Figure 3 A schematic diagram of the decomposed structure of an embodiment of a sound-emitting unit provided by the present invention;

[0028] Figure 4 A schematic cross-sectional structure diagram of an embodiment of a sound-emitting unit provided by the present invention;

[0029] Figure 5 A schematic cross-sectional structure diagram of another embodiment of a sound-emitting unit provided by the present invention;

[0030] Figure 6A schematic diagram of the decomposed structure of another embodiment of the sound-emitting unit provided by the present invention;

[0031] Figure 7 A schematic structural diagram of an embodiment of a sound module or electronic device provided by the present invention;

[0032] Figure 8 for Figure 7 Schematic cross-section of part of the structure.

[0033] Description of Figure Numbers:

[0034] 100. Sounding unit; 1. Magnetic circuit system; 11. First magnetic gap; 12. Second magnetic gap; 13. Auxiliary magnetic gap; 14. Magnetic circuit unit; 141. Center magnetic circuit; 1411. Center magnet; 1412. Center magnetic plate; 142. Intermediate magnetic circuit; 1421. First intermediate magnetic circuit; 14211. First intermediate magnet; 14212. First intermediate magnetic plate; 1422. Second intermediate magnetic circuit; 14221. Second intermediate magnet; 14222. Second intermediate magnetic plate; 143. Side magnetic circuit; 1431. Side magnet; 14311. First connection area; 14312. Second connection area; 1432. Side magnetic plate; 15. Magnetic plate assembly; 151. Middle magnetic plate; 152. Side magnetic plate; 2. First vibration system ;21, first voice coil;22, second voice coil;23, first diaphragm;231, first reinforcement;3, second vibration system;31, third voice coil;32, second diaphragm;321, second reinforcement;41, first shell;42, second shell;5, first elastic support;51, first centering support;511, first fixing part;512, first elastic arm;513, first mounting part;52, second centering support;521, second fixing part;522, second elastic arm;523, second mounting part;6, second elastic support;61, auxiliary centering support;611, auxiliary fixing part;612, auxiliary elastic arm;613, auxiliary mounting part;71, first pad;72, second pad;73, third pad;74, fourth pad;

[0035] 200, outer shell; 201, first sound cavity; 202, second sound cavity; 203, first sound hole; 204, second sound hole; 300, protective shell; 301, first sound outlet; 302, second sound outlet.

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] 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 in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] 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 used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the 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 contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] With the widespread use of smart devices, more and more people have gradually realized the importance of privacy. Therefore, users will also consider privacy as an important consideration when choosing products. At present, traditional speakers only have the function of simple sound emission. This means that when traditional speakers are used, in addition to the user, other people around the user can also hear the sound emitted by the speaker. This results in poor privacy of traditional speakers and cannot be used in call scenarios with a high degree of confidentiality.

[0041] In view of this, it is necessary to propose a sound unit and a sound module, aiming to solve the problem of poor privacy of existing sound modules.

[0042] See also Figures 1 to 4In one embodiment of the present invention, the sound-emitting unit 100 includes a magnetic circuit system 1, a first vibration system 2, and a second vibration system 3. The magnetic circuit system 1 is formed with a main magnetic gap and an auxiliary magnetic gap 13. The main magnetic gap and the auxiliary magnetic gap 13 are arranged along a first direction. The main magnetic gap includes a first magnetic gap 11 and a second magnetic gap 12 arranged at intervals along a second direction. The first vibration system 2 vibrates along the first direction. The first vibration system 2 includes a first diaphragm 23, a first voice coil 21, and a second voice coil 22. The first voice coil 21 and the second voice coil 22 are respectively located in the first magnetic gap 11 and the second magnetic gap 12, the first voice coil 21 and the second voice coil 22 are both connected to the first diaphragm 23; the second vibration system 3 vibrates along the first direction, the first vibration system 2 and the second vibration system 3 are respectively located on both sides of the magnetic circuit system 1 along the first direction, the second vibration system 3 includes a second diaphragm 32 and a third voice coil 31, the third voice coil 31 is arranged in the auxiliary magnetic gap 13, and the third voice coil 31 is connected to the second diaphragm 32; the long side of the first voice coil 21 and / or the second voice coil 22 extends along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0043] The sound-emitting unit 100 of the present invention may be a miniature sound-emitting unit, and the sound-emitting unit 100 may be applied to a sound-emitting module or an electronic device, and the sound-emitting module or the electronic device may be a computer, a mobile phone, a smart wearable device, and the like.

[0044] The technical solution of the present invention uses the first vibration system 2 and the second vibration system 3 to independently vibrate and produce sound, wherein the first vibration system 2 is driven by the first voice coil 21 and the second voice coil 22 to drive the first diaphragm 23 to vibrate and produce sound, and the second vibration system 3 is driven by the third voice coil 31 to drive the second diaphragm 32 to vibrate and produce sound; the first vibration system 2 and the second vibration system 3 can radiate sound waves of opposite phases outward, and use the dipole effect to achieve far-field cancellation of sound, while people near the sound-emitting monomer 100 can still hear the sound clearly, thereby increasing the privacy of the user. It should be noted that the first vibration system 2 and the second vibration system 3 can also be used to radiate sound waves of the same phase outward, thereby enhancing the sound, so that the loudness of the sound-emitting monomer 100 can be superimposed. It should also be noted that, compared with the long side of the first voice coil 21 and the long side of the second voice coil 22 extending along the second direction, the first magnetic gap 11 and the second magnetic gap 12 are also spaced apart along the second direction, and the short side of the first voice coil 21 and the short side of the second voice coil 22 share a magnet, while the long side of the first voice coil 21 and the long side of the second voice coil 22 need to be provided with a long magnet or a long magnetic conductive member, respectively. For this case, the technical solution of the present invention extends the long side of the first voice coil 21 along the third direction, and cooperates with the first magnetic gap 11 and the second magnetic gap spaced apart along the second direction. The first voice coil 21 and the second voice coil 22 have a long magnetic gap 12, and the long side of the first voice coil 21 and the long side or short side of the second voice coil 22 share a long magnet or a long magnetic conductive part, that is, the long magnet or the long magnetic conductive part is shared, which can effectively improve the magnetic field utilization rate of the magnetic circuit system 1; similarly, the long side of the second voice coil 22 extends along the third direction, and cooperates with the first magnetic gap 11 and the second magnetic gap 12 arranged at intervals along the second direction, and the long side of the second voice coil 22 and the long side or short side of the first voice coil 21 share a long magnet or a long magnetic conductive part, that is, the long magnet or the long magnetic conductive part is shared, which can also effectively improve the magnetic field utilization rate of the magnetic circuit system 1. Among them, the first direction is Figure 4 The up and down directions shown, the second direction is Figure 4 The left and right directions shown, the third direction is Figure 5 Front-to-back orientation shown.

[0045] It should be noted that when the first voice coil 21 and the second voice coil 22 are energized, the first voice coil 21 and the second voice coil 22 respectively make reciprocating cutting magnetic line motions in the first magnetic gap 11 and the second magnetic gap 12, driving the first diaphragm 23 to vibrate up and down, thereby instigating the air to make sounds and completing the energy conversion between electricity and sound; when the third voice coil 31 is energized, the third voice coil 31 makes reciprocating cutting magnetic line motions in the auxiliary magnetic gap 13, driving the second diaphragm 32 to vibrate up and down, thereby instigating the air to make sounds and completing the energy conversion between electricity and sound.

[0046] According to an embodiment of the present invention, the first vibration system 2 also includes a first magnetic component. The first magnetic component is arranged on the side of the first voice coil 21 and the second voice coil 22 facing away from the first diaphragm 23. The first magnetic component will be affected by the static magnetic force. When the position of the first magnetic component is a balanced position, the resultant force of the static magnetic force on the first magnetic component is zero. At this time, if the first voice coil 21 and the second voice coil 22 vibrate upward from the balanced position, the first magnetic component moves upward together with the first voice coil 21 and the second voice coil 22. At this time, the direction of the resultant force of the static magnetic force on the first magnetic component is upward, and the direction of the resultant force of the static magnetic force on the first magnetic component is consistent with the vibration direction of the first voice coil 21 and the second voice coil 22. The directions of the static magnetic forces acting on the first magnetic component are consistent with the vibration directions of the first voice coil 21 and the second voice coil 22, which also effectively increases the driving force of the first voice coil 21 and the second voice coil 22 on the diaphragm, thereby improving the performance of the sound unit 100; similarly, if the first voice coil 21 and the second voice coil 22 vibrate downward from the equilibrium position, the first magnetic component moves downward together with the first voice coil 21 and the second voice coil 22. At this time, the direction of the resultant force of the static magnetic forces acting on the first magnetic component is downward, and the direction of the static magnetic forces acting on the first magnetic component is consistent with the vibration direction of the first voice coil 21 and the second voice coil 22, thereby effectively increasing the driving force of the first voice coil 21 and the second voice coil 22 on the diaphragm, thereby improving the performance of the sound unit 100 without affecting the thickness of the sound unit 100. Among them, the first magnetic component can be annular. In addition, the first magnetic component can also be a first magnetic part and a second magnetic part that are independent of each other. The first magnetic part is connected to the first voice coil 21, and the second magnetic part is connected to the second voice coil 22. The first magnetic part can be annular, and the second magnetic part can be annular. The number of first magnetic parts can also be multiple, and multiple first magnetic parts are arranged in sequence along the circumference of the first voice coil 21. The number of second magnetic parts can also be multiple, and multiple second magnetic parts are arranged in sequence along the circumference of the second voice coil 22. It should be noted that the first magnetic part and the second magnetic part can be permanent magnetic material parts, such as ferrite, precious metal alloy, etc.; the first magnetic part and the second magnetic part can also be magnetic conductive material parts; the first magnetic part and the second magnetic part can also be soft magnetic material parts, such as pure iron, nickel, etc.

[0047] According to another embodiment of the present invention, the second vibration system 3 also includes a second magnetic component, which is arranged on the side of the third voice coil 31 away from the second diaphragm 32. The second magnetic component will be affected by the static magnetic force. When the position of the second magnetic component is a balanced position, the resultant force of the static magnetic force on the second magnetic component is zero. At this time, if the third voice coil 31 vibrates upward from the balanced position, the second magnetic component moves upward with the third voice coil 31. At this time, the direction of the resultant force of the static magnetic force on the second magnetic component is upward, and the direction of the resultant force of the static magnetic force on the second magnetic component is the same as that of the third voice coil 31. The vibration direction of the third voice coil 31 is consistent, thereby effectively increasing the driving force of the third voice coil 31 on the diaphragm and improving the performance of the sound-emitting unit 100; similarly, if the third voice coil 31 vibrates downward from the equilibrium position, the second magnetic component moves downward together with the third voice coil 31, and the direction of the resultant static magnetic force on the second magnetic component is downward, and the direction of the static magnetic force on the second magnetic component is consistent with the vibration direction of the third voice coil 31, which also effectively increases the driving force of the third voice coil 31 on the diaphragm, thereby achieving the improvement of the performance of the sound-emitting unit 100 without affecting the thickness of the sound-emitting unit 100. Among them, the second magnetic component can be annular, and in addition, the second magnetic component can include multiple independent third magnetic components, and the multiple third magnetic components are arranged on the third voice coil 31 at intervals along the circumference of the third voice coil 31. It should be noted that the third magnetic component can be a permanent magnetic material component, such as ferrite, precious metal alloy, etc.; the third magnetic component can also be a magnetic conductive material component; the third magnetic component can also be a soft magnetic material component, such as pure iron, nickel, etc.

[0048] See also Figure 3 According to an embodiment of the present invention, a first reinforcement portion 231 is provided on the first diaphragm 23. By providing the first reinforcement portion 231, the sound unit 100 has better directivity and transient response in the reproduction of high-frequency signals.

[0049] See also Figure 3 According to another embodiment of the present invention, a second reinforcement portion 321 is provided on the second diaphragm 32. By providing the second reinforcement portion 321, the sound unit 100 has better directivity and transient response in the reproduction of high-frequency signals.

[0050] See also Figures 1 to 4In one embodiment, the magnetic circuit system 1 includes a magnetic circuit unit 14 and a magnetic conductive plate assembly 15. The magnetic circuit unit 14 includes a central magnetic circuit 141, an intermediate magnetic circuit 142 arranged on the side of the central magnetic circuit 141, and a side magnetic circuit 143 arranged on the side of the intermediate magnetic circuit 142. The intermediate magnetic circuit 142 includes a first intermediate magnetic circuit 1421 and a second intermediate magnetic circuit 1422 arranged on both sides of the central magnetic circuit 141 along the second direction. The first magnetic gap 11 surrounds the first intermediate magnetic circuit 1421, and the second magnetic gap 12 surrounds the second intermediate magnetic circuit 1422. The magnetic conductive plate assembly 15 is arranged on the side of the magnetic circuit unit 14 away from the first diaphragm 23, and the magnetic conductive plate assembly 15 forms an auxiliary magnetic gap 13. By setting the magnetic conductive plate assembly 15 for magnetic conduction, it is ensured that the auxiliary magnetic gap 13 has sufficient magnetic flux, which helps to improve the performance of the sound unit 100.

[0051] See also Figure 3 and Figure 4 In one embodiment, the magnetic conductive plate assembly 15 includes a middle magnetic conductive plate 151 and a side magnetic conductive plate 152. The central magnetic circuit 141, the first intermediate magnetic circuit 1421, and the second intermediate magnetic circuit 1422 are all arranged on the middle magnetic conductive plate 151 on the side away from the first diaphragm 23. The side magnetic circuit 143 is arranged on the side magnetic conductive plate 152 on the side away from the first diaphragm 23. The side magnetic conductive plate 152 is arranged on the periphery of the middle magnetic conductive plate 151 and is spaced apart from the middle magnetic conductive plate 151 to form an auxiliary magnetic gap 13. The middle magnetic conductive plate 151 and the side magnetic conductive plate 152 are magnetically conductive, so as to ensure that the auxiliary magnetic gap 13 has sufficient magnetic flux. The side magnetic conductive plate 152 is spaced apart from the middle magnetic conductive plate 151 to avoid interference with the third voice coil 31.

[0052] See also Figures 3 to 5In one embodiment, the central magnetic circuit 141 includes a central magnet 1411 and a central magnetic conductive plate 1412, the first intermediate magnetic circuit 1421 includes a first intermediate magnet 14211 and a first intermediate magnetic conductive plate 14212, the second intermediate magnetic circuit 1422 includes a second intermediate magnet 14221 and a second intermediate magnetic conductive plate 14222, the side magnetic circuit 143 includes a side magnet 1431 and a side magnetic conductive plate 1432, the first intermediate magnetic conductive plate 14212 is disposed on a side of the first intermediate magnet 14211 facing the first diaphragm 23, and the second intermediate magnetic conductive plate 14 222 is arranged on the side of the second middle magnet 14221 facing the first diaphragm 23, the side magnetic conductive plate 1432 is arranged on the side of the side magnet 1431 facing the first diaphragm 23, the central magnet 1411, the first middle magnet 14211, the second middle magnet 14221 and the side magnet 1431 are all magnetized along the first direction, the magnetizing direction of the central magnet 1411 is the same as the magnetizing direction of the side magnet 1431, and the magnetizing directions of the first middle magnet 14211 and the second middle magnet 14221 are opposite to the magnetizing direction of the central magnet 1411. The central magnetic conductive plate 1412, the first intermediate magnetic conductive plate 14212 and the side magnetic conductive plate 1432 form a first magnetic gap 11, the central magnetic conductive plate 1412, the second intermediate magnetic conductive plate 14222 and the side magnetic conductive plate 1432 form a second magnetic gap 12, the magnetizing direction of the central magnet 1411 is the same as the magnetizing direction of the side magnet 1431, and the magnetizing directions of the first intermediate magnet 14211 and the second intermediate magnet 14221 are opposite to the magnetizing direction of the central magnet 1411, so that the first voice coil 21 and the second voice coil 22 can vibrate in the same direction when the current flows in the same direction. In this embodiment, both ends of the central magnetic conductive plate 1412 along the third direction are connected to the side magnetic conductive plate 1432 to achieve the connection and fixation of the components of the magnetic circuit system 1.

[0053] In one embodiment, the sound unit 100 further includes a first shell 41 and a second shell 42, which are respectively arranged on both sides of the magnetic circuit system 1 along the first direction, and the outer periphery of the first diaphragm 23 is connected to the first shell 41, and the outer periphery of the second diaphragm 32 is connected to the second shell 42. The first shell 41 is provided to provide reliable support for the first diaphragm 23, and the second shell 42 is provided to provide reliable support for the second diaphragm 32. By connecting both sides of the magnetic circuit system 1 to the first shell 41 and the second shell 42, respectively, the magnetic circuit system 1 and the vibration system 2 of the sound unit 100 and the first shell 41 and the second shell 42 are stably connected.

[0054] See also Figures 3 to 6According to one embodiment of the present invention, a first avoidance hole is opened in the middle magnetic conductive plate 151 corresponding to the first magnetic component, and a second avoidance hole is opened in the middle magnetic conductive plate 151 corresponding to the second magnetic component, so that the size of the first avoidance hole can be adjusted to adjust the size of the resultant static magnetic force on the first magnetic component corresponding to the first magnetic component, and the size of the second avoidance hole can be adjusted to adjust the size of the resultant static magnetic force on the second magnetic component corresponding to the first magnetic component.

[0055] In one embodiment, the side magnet 1431 includes a first magnet block, a second magnet block, a third magnet block and a fourth magnet block which are sequentially arranged in a circumferential direction of the central magnetic circuit 141. The first magnet block and the third magnet block are provided with a first connection area 14311 on the side facing the diaphragm, and the second magnet block and the fourth magnet block are provided with a second connection area 14312 on the side facing the diaphragm. The side magnetic conductive plate connected to the first connection area 14311 is connected to the central magnetic conductive plate 1412. This enables stable support and connection between the various parts of the magnetic circuit system 1 and the shell. Specifically, the first magnet block and the third magnet block are located in the third direction, and the second magnet block and the fourth magnet block are located in the second direction; that is, the first connection area 14311 is located in the third direction, and the second connection area 14312 is located in the second direction.

[0056] According to another embodiment of the present invention, the side magnetic conductive plate 1432 is injection molded on the first shell 41 ; by injection molding the side magnetic conductive plate 1432 on the first shell 41 , the side magnetic conductive plate 1432 can provide support for the side magnet 1431 .

[0057] See also Figure 1 , Figure 2 , Figure 3 and Figure 6 In one embodiment, the sound unit 100 further includes a first elastic support member 5 and a second elastic support member 6, one end of the first elastic support member 5 is connected to the first housing 41, and the first voice coil 21 and the second voice coil 22 are both connected to the other end of the first elastic support member 5; one end of the second elastic support member 6 is connected to the second housing 42, and the third voice coil 31 is connected to the other end of the second elastic support member 6. The first elastic support member 5 is provided to center and support the first voice coil 21 and the second voice coil 22, thereby preventing the first voice coil 21 and the second voice coil 22 from polarizing and improving the vibration stability of the first voice coil 21 and the second voice coil 22; the second elastic support member 6 is provided to center and support the third voice coil 31, thereby preventing the third voice coil 31 from polarizing and improving the vibration stability of the third voice coil 31.

[0058] According to an embodiment of the present invention, the first elastic support member 5 can be an integral structural member, that is, the first elastic support member 5 includes a first annular fixing portion, and a plurality of first elastic arm portions 512 which are sequentially arranged at intervals on the periphery of the first annular fixing portion along the circumference of the first annular fixing portion, each of the first elastic arm portions 512 is provided with a first mounting portion 513, the first voice coil 21 and the second voice coil 22 are fixed to the first annular fixing portion, and each first mounting portion 513 is connected to the first shell 41. Compared with using a plurality of independent support members to support the first voice coil 21 and the second voice coil 22 respectively, the first elastic support member 5 can provide better support stability for the first voice coil 21 and the second voice coil 22, and adopts The first elastic support member 5 can also facilitate wiring; the second elastic support member 6 can be an integral structural member, that is, the second elastic support member 6 includes a second annular fixing portion, and a plurality of second elastic arm portions 522 which are sequentially spaced along the circumference of the second annular fixing portion and are arranged on the periphery of the second annular fixing portion, each second elastic arm portion 522 is provided with a second mounting portion 523, the third voice coil 31 is fixed to the second annular fixing portion, and each second mounting portion 523 is connected to the second shell body 42. Compared with using multiple independent support members to support the third voice coil 31, the second elastic support member 6 can provide better supporting stability for the third voice coil 31, and the use of the second elastic support member 6 can also facilitate wiring.

[0059] In one embodiment, the first elastic support member 5 includes a first centering support piece 51 and a second centering support piece 52, and the first centering support piece 51 and the second centering support piece 52 are arranged at intervals along the third direction. The first centering support piece 51 includes a first fixing portion 511, two first elastic arm portions 512 and two first mounting portions 513, and the two first elastic arm portions 512 are respectively arranged at two ends of the first fixing portion 511, and the two first mounting portions 513 are respectively arranged corresponding to a first elastic arm portion 512, and each first mounting portion 513 is connected to the first shell 41, and the first fixing portion 511 is connected to the first voice coil 21 and the second voice coil 22; the second centering support piece 52 includes a second fixing portion 521, two second elastic arm portions 522 and Two second mounting portions 523 and two second elastic arm portions 522 are respectively arranged at the two ends of the second fixing portion 521, and the two second mounting portions 523 are respectively arranged corresponding to a second elastic arm portion 522, each second mounting portion 523 is connected to the first shell 41, and the second fixing portion 521 is connected to the first voice coil 21 and the second voice coil 22; the second elastic support member 6 also includes at least two auxiliary centering support plates 61, each auxiliary centering support plate 61 includes an auxiliary fixing portion 611, an auxiliary mounting portion 613 and an auxiliary elastic arm portion 612 connecting the auxiliary fixing portion 611 and the auxiliary mounting portion 613, each auxiliary fixing portion 611 is connected to the third voice coil 31, and each auxiliary mounting portion 613 is connected to the second shell 42. Among them, the first and second centering supports 51 and 52 are provided to center and support the first and second voice coils 21 and 22, so as to prevent the first and second voice coils 21 and 22 from being polarized and improve the vibration stability of the first and second voice coils 21 and 22; compared with the use of an integral centering support, the use of two independent first and second centering supports 51 and 52 saves the structural member connecting the first and second centering supports 51 and 52, so the use of the first and second centering supports 51 and 52 to support the first and second voice coils 21 and 22 is lower in cost; similarly, the third voice coil 31 is centered and supported by providing a plurality of independent auxiliary centering supports 61, so as to prevent the third voice coil 31 from being polarized and improve the vibration stability of the third voice coil 31; compared with the use of an integral centering support, the use of a plurality of independent auxiliary centering supports 61 to support the third voice coil 31 saves the connection structure between adjacent auxiliary centering supports 61, so the cost is lower.

[0060] According to an embodiment of the present invention, the first elastic support member 5 includes a first centering support piece 51 and a second centering support piece 52. The first centering support piece 51 and the second centering support piece 52 are arranged at intervals along the third direction. The first centering support piece 51 includes a first fixing portion 511, two first elastic arms 512 and two first mounting portions 513. The two first elastic arms 512 are respectively arranged at both ends of the first fixing portion 511. The two first mounting portions 513 are respectively arranged corresponding to one first elastic arm portion 512. Each first mounting portion 513 is connected to the first fixing portion 511. The first voice coil 21 and the second voice coil 22 are connected to a housing 41, and the first fixing part 511 is connected to the first voice coil 21 and the second voice coil 22; the second centering support piece 52 includes a second fixing part 521, two second elastic arms 522 and two second mounting parts 523, the two second elastic arms 522 are respectively arranged at the two ends of the second fixing part 521, and the two second mounting parts 523 are respectively arranged corresponding to a second elastic arm 522, and each second mounting part 523 is connected to the second housing 42, and the second fixing part 521 is connected to the first voice coil 21 and the second voice coil 22. The first centering support piece 51 is arranged to center and support the first voice coil 21, thereby preventing the first voice coil 21 from polarizing and improving the vibration stability of the first voice coil 21; the second centering support piece 52 is arranged to center and support the second voice coil 22, thereby preventing the second voice coil 22 from polarizing and improving the vibration stability of the second voice coil 22.

[0061] In one embodiment, a pad component is provided on the first centering support plate 51 and the second centering support plate 52, and the pad component includes a first pad 71, a second pad 72, a third pad 73 and a fourth pad 74. The first pad 71 and the second pad 72 are arranged on the first mounting portion 513, the first voice coil 21 and the second voice coil 22 are connected in series, the lead of the first voice coil 21 is electrically connected to the first pad 71, and the lead of the second voice coil 22 is electrically connected to the second pad 72; the third pad 73 and the fourth pad 74 are respectively provided on any two auxiliary mounting portions 613, and the third pad 73 and the fourth pad 74 are electrically connected to the lead of the third voice coil 31. Compared with setting a circuit board connected to the voice coil, the sound unit 100 of this embodiment eliminates the circuit board as a structural component by setting the first solder pad 71 and the second solder pad 72 on the first mounting part 513, and the third solder pad 73 and the fourth solder pad 74 are respectively set on any two auxiliary mounting parts 613, which helps to reduce the thickness of the sound unit 100.

[0062] According to one embodiment of the present invention, the first elastic support member 5 is provided with a first support magnetic member, wherein the first support magnetic member may be a member made of a permanent magnetic material, such as ferrite, precious metal alloy, etc.; the first support magnetic member may also be a member made of a magnetic conductive material; the first support magnetic member may also be a member made of a soft magnetic material, such as pure iron, nickel, etc.; wherein the first support magnetic member will be acted upon by a static magnetic force, and the resultant force of the static magnetic force acted upon the first support magnetic member in a balanced position is zero, and when the first voice coil 21 and the second voice coil 22 vibrate upward from the balanced position, the direction of the resultant force of the static magnetic force acted upon the first support magnetic member is also upward, and the force will act on the first voice coil 21 and the second voice coil 22 through the first elastic support member 5, and due to the static magnetic force acted upon the first support magnetic member The direction of the resultant force is consistent with the vibration direction of the first voice coil 21 and the second voice coil 22, thereby effectively increasing the driving force of the first voice coil 21 and the second voice coil 22 on the diaphragm, thereby effectively improving the sensitivity of the sound unit 100; similarly, when the first voice coil 21 and the second voice coil 22 vibrate downward from the equilibrium position, the direction of the resultant force of the static magnetic force on the first support magnetic part is also downward, and this force will act on the first voice coil 21 and the second voice coil 22 through the first elastic support part 5. Since the direction of the resultant force of the static magnetic force on the first support magnetic part is consistent with the vibration direction of the first voice coil 21 and the second voice coil 22, the driving force of the first voice coil 21 and the second voice coil 22 on the diaphragm is effectively increased, thereby effectively improving the sensitivity of the sound unit 100.

[0063] According to another embodiment of the present invention, the second elastic support member 6 is provided with a second support magnetic member, wherein the second support magnetic member may be made of a permanent magnetic material, such as ferrite, precious metal alloy, etc.; the second support magnetic member may also be made of a magnetic conductive material; the second support magnetic member may also be made of a soft magnetic material, such as pure iron, nickel, etc.; wherein the second support magnetic member will be affected by a static magnetic force, and the resultant static magnetic force on the second support magnetic member when it is in a balanced position is zero, and when the third voice coil 31 vibrates upward from the balanced position, the direction of the resultant static magnetic force on the second support magnetic member is also upward, and the force will act on the third voice coil 31 through the second elastic support member 6, due to The direction of the resultant static magnetic force on the second support magnetic component is consistent with the vibration direction of the third voice coil 31, thereby effectively increasing the driving force of the third voice coil 31 on the diaphragm, thereby effectively improving the sensitivity of the sound unit 100; similarly, when the third voice coil 31 vibrates downward from the equilibrium position, the direction of the resultant static magnetic force on the second support magnetic component is also downward, and this force will act on the third voice coil 31 through the second elastic support member 6. Since the direction of the resultant static magnetic force on the second support magnetic component is consistent with the vibration direction of the third voice coil 31, the driving force of the third voice coil 31 on the diaphragm is effectively increased, thereby effectively improving the sensitivity of the sound unit 100.

[0064] In one embodiment, the sound-emitting monomer 100 includes a first working state, in which the first vibration system 2 and the second vibration system 3 radiate sound waves of opposite phases. In the first working state, the first vibration system 2 and the second vibration system 3 radiate sound waves of opposite phases, so that the sound-emitting monomer 100 can be applied to electronic devices with call privacy to achieve better low leakage effect. It can be understood that in the first working state, the sound-emitting monomer 100 is used as a receiver.

[0065] In one embodiment, the sound-emitting monomer 100 further includes a second working state, in which the first vibration system 2 and the second vibration system 3 radiate sound waves of the same phase. In the second working state, the first vibration system 2 and the second vibration system 3 radiate sound waves of the same phase, so that when the sound-emitting monomer 100 is applied to electronic equipment, the radiation volume and loudness can be improved. It can be understood that in the first working state, the sound-emitting monomer 100 is used as a speaker.

[0066] See also Figure 7 and Figure 8 The present invention also provides a sound module, which includes a housing 200 and the above-mentioned sound monomer 100, the sound monomer 100 is arranged in the housing 200, and the sound module can be a speaker module or a computer, a mobile phone, a smart wearable device, etc. Since the sound module adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0067] In one embodiment, the housing 200 and the sound-emitting unit 100 enclose a first sound cavity 201 and a second sound cavity 202, the first sound cavity 201 and the second sound cavity 202 are respectively arranged on both sides of the sound-emitting unit 100 along the vibration direction of the first vibration system 2, the housing 200 is provided with a first sound hole 203 connected to the first sound cavity 201, and the housing 200 is provided with a second sound hole 204 connected to the second sound cavity 202. Among them, the first vibration system 2 is arranged corresponding to the first sound cavity 201, and the second vibration system 3 is arranged corresponding to the second sound cavity 202. The sound waves generated by the first vibration system 2 can be sequentially transmitted to the outside through the first sound cavity 201 and the first sound hole 203, and the sound waves generated by the second vibration system 3 can be sequentially transmitted to the outside through the second sound cavity 202 and the second sound hole 204.

[0068] In one embodiment, the sound module has a first mode. In the first mode, the first sound hole 203 and the second sound hole 204 radiate sound waves with opposite phases outward, so that the sound module can achieve a better low leakage effect.

[0069] In one embodiment, the sound module has a second mode. In the first mode, the first sound hole 203 and the second sound hole 204 radiate sound waves of the same phase to the outside, which can improve the radiation volume and loudness of the sound module.

[0070] The present invention further provides an electronic device, which includes a protective shell 300 and the above-mentioned sound-emitting unit 100 , wherein the sound-emitting unit 100 is disposed in the protective shell 300 .

[0071] The protective shell 300 and the sound-emitting unit 100 enclose a first sound cavity 201 and a second sound cavity 202. The first sound cavity 201 and the second sound cavity 202 are respectively arranged on both sides of the sound-emitting unit 100 along the vibration direction of the first vibration system 2. The protective shell 300 is provided with a first sound outlet 301 connected to the first sound cavity 201, and the protective shell 300 is also provided with a second sound outlet 302 connected to the second sound cavity 202. The sound waves generated by the first vibration system 2 can be transmitted to the outside through the first sound cavity 201 and the first sound outlet 301 in sequence, and the sound waves generated by the second vibration system 3 can be transmitted to the outside through the second sound cavity 202 and the second sound outlet 302 in sequence. It should be noted that the electronic device can be an electronic device such as a computer, a mobile phone, a speaker, and a smart wearable device.

[0072] In one embodiment, the electronic device has a handset mode. In the handset mode, the first sound outlet 301 and the second sound outlet 302 radiate sound waves with opposite phases to the outside, so that the electronic device achieves a better low leakage effect.

[0073] In one embodiment, the electronic device has an external speaker mode. In the external speaker mode, the first sound outlet 301 and the second sound outlet 302 radiate sound waves with the same phase to the outside, which can improve the radiation volume and loudness of the electronic device.

[0074] The above are only exemplary embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A sound-emitting unit, characterized in that: include: A magnetic circuit system, wherein the magnetic circuit system is formed with a main magnetic gap and an auxiliary magnetic gap, wherein the main magnetic gap and the auxiliary magnetic gap are arranged along a first direction, and the main magnetic gap includes a first magnetic gap and a second magnetic gap spaced apart along a second direction; a first vibration system, the first vibration system vibrates along the first direction, the first vibration system comprises a first diaphragm, a first voice coil and a second voice coil, the first voice coil and the second voice coil are respectively located in the first magnetic gap and the second magnetic gap, and the first voice coil and the second voice coil are both connected to the first diaphragm; a second vibration system, the second vibration system vibrates along the first direction, the first vibration system and the second vibration system are respectively located on both sides of the magnetic circuit system along the first direction, the second vibration system comprises a second diaphragm and a third voice coil, the third voice coil is arranged in the auxiliary magnetic gap, and the third voice coil is connected to the second diaphragm; A long side of the first voice coil and / or the second voice coil extends along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The sound-emitting unit according to claim 1, characterized in that: The magnetic circuit system includes a magnetic circuit unit and a magnetic conductive plate assembly, the magnetic circuit unit includes a central magnetic circuit, an intermediate magnetic circuit arranged on the periphery of the central magnetic circuit, and a side magnetic circuit arranged on the periphery of the intermediate magnetic circuit, the intermediate magnetic circuit includes a first intermediate magnetic circuit and a second intermediate magnetic circuit respectively arranged on both sides of the central magnetic circuit along the second direction, the first magnetic gap surrounds the first intermediate magnetic circuit, and the second magnetic gap surrounds the second intermediate magnetic circuit; the magnetic conductive plate assembly is arranged on the side of the magnetic circuit unit away from the first diaphragm, and the magnetic conductive plate assembly forms the auxiliary magnetic gap.

3. The sound-emitting unit according to claim 2, characterized in that: The magnetic conductive plate assembly includes a middle magnetic conductive plate and a side magnetic conductive plate. The central magnetic circuit, the first intermediate magnetic circuit and the second intermediate magnetic circuit are all arranged on the middle magnetic conductive plate on a side away from the first diaphragm. The side magnetic circuit is arranged on the side magnetic conductive plate on a side away from the first diaphragm. The side magnetic conductive plates are arranged on the periphery of the middle magnetic conductive plate and are spaced apart from the middle magnetic conductive plate to form the auxiliary magnetic gap.

4. The sound-emitting unit according to claim 2, characterized in that: The central magnetic circuit includes a central magnet and a central magnetic conductive plate, the first intermediate magnetic circuit includes a first intermediate magnet and a first intermediate magnetic conductive plate, the second intermediate magnetic circuit includes a second intermediate magnet and a second intermediate magnetic conductive plate, the side magnetic circuit includes a side magnet and a side magnetic conductive plate, the first intermediate magnetic conductive plate is arranged on the side of the first intermediate magnet facing the first diaphragm, the second intermediate magnetic conductive plate is arranged on the side of the second intermediate magnet facing the first diaphragm, and the side magnetic conductive plate is arranged on the side of the side magnet facing the first diaphragm, the central magnet, the first intermediate magnet, the second intermediate magnet and the side magnet are all magnetized along the first direction, the magnetization direction of the central magnet is the same as the magnetization direction of the side magnet, the magnetization directions of the first intermediate magnet and the second intermediate magnet are opposite to the magnetization direction of the central magnet, and both ends of the central magnetic conductive plate along the third direction are connected to the side magnetic conductive plates.

5. The sound-emitting unit according to claim 1, characterized in that: The sound unit also includes a first shell and a second shell, the first shell and the second shell are respectively arranged on both sides of the magnetic circuit system along the first direction, the outer periphery of the first diaphragm is connected to the first shell, and the outer periphery of the second diaphragm is connected to the second shell.

6. The sound-emitting unit according to claim 5, characterized in that: The sound unit also includes a first elastic support member and a second elastic support member, one end of the first elastic support member is connected to the first shell, and the first voice coil and the second voice coil are both connected to the other end of the first elastic support member; one end of the second elastic support member is connected to the second shell, and the third voice coil is connected to the other end of the second elastic support member.

7. The sound-emitting unit according to claim 6, characterized in that: The first elastic support member includes a first centering support plate and a second centering support plate, the first centering support plate and the second centering support plate are arranged at intervals along the third direction, the first centering support plate includes a first fixing portion, two first elastic arm portions and two first mounting portions, the two first elastic arm portions are respectively arranged at two ends of the first fixing portion, the two first mounting portions are respectively arranged corresponding to one first elastic arm portion, each first mounting portion is connected to the first shell, and the first fixing portion is connected to the first voice coil and the second voice coil; the second centering support plate includes a second fixing portion, two second elastic arm portions and two second mounting portions, the two second elastic arm portions are respectively arranged at two ends of the second fixing portion, the two second mounting portions are respectively arranged corresponding to one second elastic arm portion, each second mounting portion is connected to the first shell, and the second fixing portion is connected to the first voice coil and the second voice coil; The second elastic support member also includes at least two auxiliary centering support plates, each of which includes an auxiliary fixing portion, an auxiliary mounting portion, and an auxiliary elastic arm portion connecting the auxiliary fixing portion and the auxiliary mounting portion, each of the auxiliary fixing portions is connected to the third voice coil, and each of the auxiliary mounting portions is connected to the second shell.

8. The sound-emitting unit according to claim 7, characterized in that: The first centering support plate and the second centering support plate are provided with a pad component, and the pad component includes a first pad, a second pad, a third pad and a fourth pad. The first pad and the second pad are arranged on the first mounting portion, the first voice coil and the second voice coil are connected in series, the lead of the first voice coil is electrically connected to the first pad, and the lead of the second voice coil is electrically connected to the second pad; any two of the auxiliary mounting portions are respectively provided with a third pad and a fourth pad, and the third pad and the fourth pad are electrically connected to the lead of the third voice coil.

9. The sound-emitting unit according to any one of claims 1 to 8, characterized in that: The sound-emitting unit includes a first working state. In the first working state, the first vibration system and the second vibration system radiate sound waves with opposite phases outwardly.

10. The sound-emitting unit according to claim 9, characterized in that: The sound-emitting unit also includes a second working state. In the second working state, the first vibration system and the second vibration system radiate sound waves of the same phase outwardly.

11. A sound module, characterized in that: The sound module comprises a housing and a sound unit as described in any one of claims 1 to 10.

12. The sound module according to claim 11, characterized in that: The shell and the sound-emitting unit form a first sound cavity and a second sound cavity. The first sound cavity and the second sound cavity are respectively arranged on both sides of the sound-emitting unit along the vibration direction of the first vibration system. The shell is provided with a first sound hole connected to the first sound cavity, and the shell is provided with a second sound hole connected to the second sound cavity.

13. The sound module according to claim 12, characterized in that: The sound module has a first mode, in which the first sound hole and the second sound hole radiate sound waves with opposite phases outward.

14. The sound module according to claim 13, characterized in that: The sound module has a second mode, in which the first sound hole and the second sound hole radiate sound waves with the same phase outward.

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