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 vibration system and a shell, the magnetic circuit system comprises a magnetic conduction yoke unit, a magnet unit and a magnetic conduction plate unit, the magnetic conduction plate unit forms a main magnetic gap, the magnet unit forms an auxiliary magnetic gap, and the vibration system is connected with the shell. The main magnetic gap comprises a first magnetic gap and a second magnetic gap, the vibration system comprises a vibrating diaphragm, a first voice coil, a second voice coil, an auxiliary voice coil and a connecting assembly, and the first voice coil and the second voice coil are connected with the auxiliary voice coil through the connecting assembly; the vibration system and the magnetic circuit system are arranged at the two ends of the shell in the first direction respectively, the outer periphery of the vibrating diaphragm is connected with the shell, the side, facing the vibrating diaphragm, of the magnet unit is arranged on the magnetic conduction plate unit, and the magnet unit and the magnetic conduction yoke unit are connected with the shell through the magnetic conduction plate unit. The magnetic conductive plate unit can replace a traditional rear cover to support the magnet unit, so that the thickness of the loudspeaker is reduced.

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] As smart products become thinner, the limited internal space poses a great challenge to the acoustic performance of speakers. The magnetic circuit system of existing speakers is generally fixed on a metal back cover, that is, the magnetic circuit system is supported by the metal back cover. Therefore, the thickness of the metal back cover directly affects the stability of the support for the magnetic circuit system. If the thickness of the metal back cover is reduced, the stability of the support of the magnetic circuit system by the metal back cover may deteriorate, thereby affecting the performance of the speaker. Therefore, it is impossible to directly reduce the thickness of the speaker by thinning the metal back cover. 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 how to reduce the thickness of the speaker.

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

[0005] A magnetic circuit system, the magnetic circuit system comprising a magnetic yoke unit, a magnet unit and a magnetic plate unit, the magnetic yoke unit and the magnetic plate unit are respectively arranged on opposite sides of the magnet unit along a first direction, the magnetic plate unit forms a main magnetic gap, the magnetic yoke unit forms an auxiliary magnetic gap, the main magnetic gap comprises a first magnetic gap and a second magnetic gap arranged at intervals along a second direction, the first magnetic gap and the second magnetic gap are both connected to the auxiliary magnetic gap, and the first direction and the second direction are perpendicular to each other;

[0006] A vibration system, wherein the vibration system vibrates along the first direction, the vibration system comprises a diaphragm, a first voice coil, a second voice coil, an auxiliary voice coil and a connecting component, wherein the first voice coil is located in the first magnetic gap, the second voice coil is located in the second magnetic gap, the auxiliary voice coil is located in the auxiliary magnetic gap, the first voice coil and the second voice coil are both connected to the auxiliary voice coil through the connecting component, the first voice coil and the second voice coil are both connected to the diaphragm at a side away from the auxiliary voice coil, and the current direction of the first voice coil and the current direction of the second voice coil are opposite to the current direction of the auxiliary voice coil;

[0007] The vibration system and the magnetic circuit system are respectively arranged at the two ends of the shell along the first direction, the outer periphery of the diaphragm is connected to the shell, the magnet unit is arranged on the magnetic plate unit facing the diaphragm, the magnetic plate unit is connected to the shell, and the magnet unit and the magnetic yoke unit are connected to the shell through the magnetic plate unit.

[0008] In one embodiment, the magnet unit includes a central magnetic circuit and a side magnetic circuit arranged on the periphery of the central magnetic circuit, the central magnetic circuit and the side magnetic circuit are arranged at intervals, the magnetic yoke unit includes a central magnetic yoke and a side magnetic yoke, the central magnetic yoke is connected to the central magnetic circuit, the side magnetic yoke is connected to the side magnetic circuit, and the auxiliary magnetic gap is formed between the central magnetic yoke and the side magnetic yoke; the magnetic plate unit includes a central magnetic plate and a side magnetic plate, the central magnetic plate is connected to the central magnetic circuit, and the side magnetic plate is connected to the side magnetic circuit, wherein,

[0009] The side magnetic conductive plates are connected to the shell, and the central magnetic conductive plates are connected to the side magnetic conductive plates along a third direction, and the third direction is perpendicular to the first direction and the second direction.

[0010] In one embodiment, the central magnetic circuit includes a central magnet, a first intermediate magnet and a second intermediate magnet, and the central magnet, the first intermediate magnet and the second intermediate magnet are all arranged on the central magnetic yoke on the side facing away from the diaphragm, and the first intermediate magnet and the second intermediate magnet are respectively arranged on both sides of the central magnet along the second direction; the central magnetic plate includes an intermediate magnetic plate, a first magnetic plate and a second magnetic plate, and the side magnetic circuit includes a side magnet, the side magnetic yoke is arranged on the side of the side magnet facing away from the diaphragm, the side magnetic plate is arranged on the side of the side magnet facing the diaphragm, and the central The side of the core magnet facing the diaphragm is arranged on the intermediate magnetic conductive plate, the intermediate magnetic conductive plate is connected to the side magnetic conductive plate along the third direction, the first magnetic conductive plate is arranged on the side of the first middle magnet facing the diaphragm, and the second magnetic conductive plate is arranged on the side of the second middle magnet facing the diaphragm; the center magnet, the first middle magnet, the second middle magnet and the side magnet are all magnetized along the first direction, and the magnetization direction of the center magnet is the same as the magnetization direction of the side magnet, and the magnetization directions of the first middle magnet and the second middle magnet are opposite to the magnetization direction of the center magnet.

[0011] In one embodiment, the magnet unit includes a central magnetic circuit and a side magnetic circuit arranged on the periphery of the central magnetic circuit, the central magnetic circuit and the side magnetic circuit are arranged at intervals, the magnetic yoke unit includes a central magnetic yoke and a side magnetic yoke, the central magnetic yoke is connected to the central magnetic circuit, the side magnetic yoke is connected to the side magnetic circuit, and the auxiliary magnetic gap is formed between the central magnetic yoke and the side magnetic yoke; the magnetic plate unit includes a central magnetic plate and a side magnetic plate, the central magnetic plate is connected to the central magnetic circuit, and the side magnetic plate is connected to the side magnetic circuit, wherein,

[0012] The side magnetic conductive plate is connected to the shell, and the central magnetic conductive plate is connected to the shell along a third direction, and the third direction is perpendicular to the first direction and the second direction.

[0013] In one embodiment, the side magnetic conductive plate is injection molded on the shell.

[0014] In one embodiment, the central magnetic yoke includes a first body and a first flange, the first flange is bent from the outer periphery of the first body toward the diaphragm, and the first intermediate magnet and the second intermediate magnet are respectively provided with a first avoidance groove and a second avoidance groove for avoiding the first flange on one side facing the first flange;

[0015] and / or,

[0016] The edge magnetic yoke includes a second body and a second flange, the second flange is bent from the inner periphery of the second body toward the diaphragm, and a flange avoidance groove for avoiding the second flange is provided on the side of the edge magnet facing the second flange.

[0017] In one embodiment, the sound-emitting unit further includes a back cover, and the magnet unit is arranged on the back cover at a side facing away from the diaphragm;

[0018] The rear cover protrudes in a direction away from the diaphragm to form an annular avoidance groove, the notch of the annular avoidance groove is arranged toward the auxiliary magnetic gap and communicated with the auxiliary magnetic gap, and the annular avoidance groove is used to avoid the auxiliary voice coil;

[0019] and / or,

[0020] The back cover is a metal sheet.

[0021] In one embodiment, the connecting component includes an elastic support member and a rigid connecting member, one end of the elastic support member is connected to the shell, the sides of the first voice coil and the second voice coil facing away from the diaphragm are connected to the other end of the elastic support member, one end of the rigid connecting member is connected to the side of the elastic support member facing away from the first voice coil and the second voice coil, and the other end of the rigid connecting member is connected to the auxiliary voice coil.

[0022] In one embodiment, the elastic support member includes an annular fixing portion, a mounting portion, and an elastic arm portion connecting the annular fixing portion and the mounting portion, the mounting portion is connected to the housing, and the first voice coil and the second voice coil are both connected to the annular fixing portion;

[0023] Alternatively, the elastic support member includes a first centering support plate and a second centering support plate, the rigid connecting member includes a first rigid connecting portion and a second rigid connecting portion, both ends of the first centering support plate are connected to the shell, one side of the first centering support plate is connected to the first voice coil, and the other side of the first centering support plate is connected to the first rigid connecting portion, both ends of the second centering support plate are connected to the shell, one side of the second centering support plate is connected to the second voice coil, and the other side of the second centering support plate is connected to the second rigid connecting portion.

[0024] In one embodiment, the sound unit further includes a first solder pad and a second solder pad, a third solder pad and a fourth solder pad, the first solder pad and the third solder pad are relatively arranged on both sides of the first centering support plate, the second solder pad and the fourth solder pad are relatively arranged on both sides of the second centering support plate, the first solder pad is arranged toward the first voice coil, the second solder pad is arranged toward the second voice coil, the first voice coil is electrically connected to the first solder pad, the second voice coil is electrically connected to the second solder pad, and the third solder pad and the fourth solder pad are both electrically connected to the auxiliary voice coil.

[0025] 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.

[0026] The technical solution of the present invention adopts a magnetic conductive plate unit to connect with the shell, and sets the magnet unit on the magnetic conductive plate unit, so that the magnetic conductive plate unit can replace the traditional back cover to support the magnet unit, so that the metal back cover of the sound unit can be thinner than that of the traditional speaker, thereby reducing the thickness of the speaker; and the magnetic conductive plate unit can also conduct magnetism to ensure that the first magnetic gap and the second magnetic gap have sufficient magnetic flux, which helps to improve the performance of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 A schematic structural diagram of an embodiment of a sound-emitting unit provided by the present invention;

[0029] Figure 2 A schematic structural diagram of another perspective of an embodiment of a sound-emitting unit provided by the present invention;

[0030] Figure 3A schematic diagram of the decomposed structure of an embodiment of a sound-emitting unit provided by the present invention;

[0031] Figure 4 A schematic cross-sectional structure diagram of an embodiment of a sound-emitting unit provided by the present invention;

[0032] Figure 5 A cross-sectional schematic diagram of a partial structure of an embodiment of a sound-emitting unit provided by the present invention;

[0033] Figure 6 A schematic structural diagram of a first voice coil, a second voice coil, an auxiliary voice coil and an elastic support member provided by the present invention;

[0034] Figure 7 A schematic structural diagram of the first voice coil, the second voice coil, the auxiliary voice coil and the elastic support member provided by the present invention from another perspective;

[0035] Figure 8 A schematic cross-sectional structure diagram of another embodiment of a sound-emitting unit provided by the present invention;

[0036] Fig. 9 A schematic diagram of the structure of the intermediate magnetic conductive plate, the side magnetic conductive plate and the shell provided by the present invention

[0037] Fig.10 A schematic diagram of the BL curve of the sound unit provided by the present invention and a traditional single-layer voice coil.

[0038] Description of Figure Numbers:

[0039] 100, sound unit; 1, magnetic circuit system; 11, magnet unit; 111, center magnetic circuit; 1111, center magnet; 1112, first intermediate magnet; 11121, first avoidance groove; 1113, second intermediate magnet; 11131, second avoidance groove; 1114, center magnetic yoke; 11141, first body; 11142, first flange; 112, side magnetic circuit; 1121, side magnet; 11211, first a magnet block; 11212, a second magnet block; 11213, a third magnet block; 11214, a fourth magnet block; 11215, a flange avoidance groove; 1122, a side magnetic yoke; 11221, a second body; 11222, a second flange; 11223, a leakage hole; 113, an auxiliary magnetic gap; 12, a magnetic plate unit; 121, an intermediate magnetic plate; 1211, an intermediate magnetic portion; 1212, a side magnetic portion; 122 , first magnetic conductive plate; 123, second magnetic conductive plate; 124, side magnetic conductive plate; 125, first magnetic gap; 126, second magnetic gap; 2, vibration system; 21, diaphragm; 211, reinforcement; 22, first voice coil; 221, first annular voice coil; 23, second voice coil; 231, second annular voice coil; 24, auxiliary voice coil; 25, connecting assembly; 251, elastic support; 2511, first centering support plate; 25111 , first fixing part; 25112, first elastic arm part; 25113, first mounting part; 2512, second centering support piece; 25121, second fixing part; 25122, second elastic arm part; 25123, second mounting part; 252, rigid connecting part; 3, shell; 4, back cover; 41, annular avoidance groove; 42, isolation mesh; 51, first welding pad; 52, second welding pad; 53, third welding pad; 54, fourth welding pad.

[0040] 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

[0041] 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.

[0042] 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.

[0043] 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.

[0044] As smart products become thinner, the limited internal space poses a great challenge to the acoustic performance of speakers. The magnetic circuit system of existing speakers is generally fixed on a metal back cover, that is, the magnetic circuit system is supported by the metal back cover. Therefore, the thickness of the metal back cover directly affects the stability of the support for the magnetic circuit system. If the thickness of the metal back cover is reduced, the stability of the support of the magnetic circuit system by the metal back cover may deteriorate, thereby affecting the performance of the speaker. Therefore, it is impossible to directly reduce the thickness of the speaker by thinning the metal back cover.

[0045] In view of this, it is necessary to propose a sound unit and a sound module, aiming to solve the problem of how to reduce the thickness of the speaker.

[0046] See also Figures 1 to 3In one embodiment of the present invention, the sound-emitting unit 100 includes a magnetic circuit system 1, a vibration system 2 and a shell 3. The magnetic circuit system 1 includes a magnetic yoke unit, a magnet unit 11 and a magnetic plate unit 12. The magnetic yoke unit and the magnetic plate unit 12 are respectively arranged on opposite sides of the magnet unit 11 along the first direction. The magnetic plate unit 12 forms a main magnetic gap, and the magnet unit 11 forms an auxiliary magnetic gap 113. The main magnetic gap and the auxiliary magnetic gap 113 are arranged along the first direction. The main magnetic gap includes a first magnetic gap 125 and a second magnetic gap 126 arranged at intervals along the second direction. The first magnetic gap 125 and the second magnetic gap 126 are both connected to the auxiliary magnetic gap 113, and the first direction and the second direction are perpendicular to each other. The vibration system 2 vibrates along the first direction. The vibration system 2 includes a diaphragm 21, a first voice coil 22, a second voice coil 23, and an auxiliary voice coil 24. and a connecting component 25, the first voice coil 22 is located in the first magnetic gap 125, the second voice coil 23 is located in the second magnetic gap 126, the auxiliary voice coil 24 is located in the auxiliary magnetic gap 113, the first voice coil 22 and the second voice coil 23 are both connected to the auxiliary voice coil 24 through the connecting component 25, the first voice coil 22 and the second voice coil 23 are both connected to the diaphragm 21 on the side away from the auxiliary voice coil 24, the current direction of the first voice coil 22 and the current direction of the second voice coil 23 are opposite to the current direction of the auxiliary voice coil 24; the vibration system 2 and the magnetic circuit system 1 are respectively arranged at the two ends of the shell 3 along the first direction, the outer periphery of the diaphragm 21 is connected to the shell 3, the magnet unit 11 is arranged on the magnetic plate unit 12 on the side facing the diaphragm 21, the magnetic plate unit 12 is connected to the shell 3, and the magnet unit 11 and the magnetic yoke unit are connected to the shell 3 through the magnetic plate unit 12.

[0047] The sound-emitting monomer 100 of the present invention may be a loudspeaker monomer, and the sound-emitting monomer 100 may be applied to a sound module of an electronic device, and the electronic device may be a computer, a mobile phone, a smart wearable device, etc. This embodiment is described by taking the sound-emitting monomer 100 as a loudspeaker monomer as an example.

[0048] See also Figures 1 to 5The technical solution of the present invention adopts a magnetic conductive plate unit 12 to connect with the shell 3, and sets the magnet unit 11 on the magnetic conductive plate unit 12, so that the magnetic conductive plate unit 12 can replace the traditional back cover to support the magnet unit 11, so that the sound unit 100 can have a thinner metal back cover than the traditional speaker, thereby reducing the thickness of the speaker; and the magnetic conductive plate unit 12 can also conduct magnetism to ensure that the first magnetic gap 125 and the second magnetic gap 126 have sufficient magnetic flux, which helps to improve the performance of the sound unit 100. Among them, the first voice coil 22 and the second voice coil 23 arranged at intervals along the second direction drive the diaphragm 21 to vibrate, and the current directions of the first voice coil 22 and the second voice coil 23 are the same, and the driving force generated is also in the same direction. The first voice coil 22 and the second voice coil 23 drive the diaphragm 21 to vibrate, which has better performance than a single voice coil speaker; by adding an auxiliary voice coil 24, the auxiliary voice coil 24 is connected to the first voice coil 22 and the second voice coil 23 through a connecting component 25, and the current directions of the first voice coil 22 and the second voice coil 23 are opposite to the current direction of the auxiliary voice coil 24, so that the auxiliary voice coil 24 arranged in the auxiliary magnetic gap 113 can also generate a driving force in the same direction as the first voice coil 22 and the second voice coil 23. The driving force cooperates with the driving force of the first voice coil 22 and the second voice coil 23 to act on the diaphragm 21 to drive the diaphragm 21 to vibrate, so that the sound unit 100 has a better performance improvement than a speaker with two voice coils arranged at intervals along the second direction. It should be noted that, please refer to Figure 4 , the first direction is the up-down direction, and the second direction is the left-right direction.

[0049] It should be noted that when the first voice coil 22, the second voice coil 23 and the auxiliary voice coil 24 are energized, the first voice coil 22, the second voice coil 23 and the auxiliary voice coil 24 perform reciprocating cutting magnetic line motions in the first magnetic gap 125, the second magnetic gap 126 and the auxiliary magnetic gap 113 respectively, driving the diaphragm 21 to vibrate up and down, thereby instigating the air to make sound and completing the energy conversion between electricity and sound.

[0050] According to another embodiment of the present invention, a reinforcement part 211 is provided on the diaphragm 21, and the sound-emitting unit 100 has better directivity and transient response in the reproduction of high-frequency signals by providing the reinforcement part 211. It should also be noted that the auxiliary voice coil 24 is a single annular voice coil, the first voice coil 22 includes at least two first annular voice coils 221 nested in sequence and arranged in sequence along the first direction, and the second voice coil 23 includes at least two second annular voice coils 231 nested in sequence and arranged in sequence along the first direction, thereby effectively improving the strength of the reinforcement part 211 and avoiding high-frequency harmonics of the reinforcement part 211.

[0051] See also Figure 3 and Figure 4In one embodiment, the magnet unit 11 includes a central magnetic circuit 111 and a side magnetic circuit 112 arranged on the side of the central magnetic circuit 111, and the central magnetic circuit 111 and the side magnetic circuit 112 are arranged at intervals. The magnetic yoke unit includes a central magnetic yoke 1114 and a side magnetic yoke 1122, the central magnetic yoke 1114 is connected to the central magnetic circuit 111, the side magnetic yoke 1122 is connected to the side magnetic circuit 112, and an auxiliary magnetic gap is formed between the central magnetic yoke 1114 and the side magnetic yoke 1122; the magnetic plate unit 12 includes a central magnetic plate and a side magnetic plate 124, the central magnetic plate is connected to the central magnetic circuit 111, and the side magnetic plate 124 is connected to the side magnetic circuit 112, wherein the side magnetic plate 124 is connected to the shell 3, and the central magnetic plate is connected to the side magnetic plate 124 along a third direction, and the third direction is perpendicular to the first direction and the second direction. The two ends of the intermediate magnetic conductive plate 121 are connected to the side magnetic conductive plates 124 on the shell 3, and the central magnetic circuit 111 is arranged on the intermediate magnetic conductive plate 121, so that the intermediate magnetic conductive plate 121 can support at least part of the structure of the central magnetic circuit 111, thereby making it possible to reduce the thickness of the sound unit 100 by thinning the traditional back cover. In addition, by setting the intermediate magnetic conductive plate 121, the first magnetic conductive plate 122 and the side magnetic conductive plate 124 for magnetic conduction, it is ensured that the first magnetic gap 125 has sufficient magnetic flux, and by setting the intermediate magnetic conductive plate 121, the second magnetic conductive plate 123 and the side magnetic conductive plate 124 for magnetic conduction, it is ensured that the second magnetic gap 126 has sufficient magnetic flux. It should be noted that the number of the side magnetic conductive plates 124 can be one or more, and there is no limitation here. Similarly, the number of the intermediate magnetic conductive plates 121, the first magnetic conductive plate 122 and the second magnetic conductive plate 123 can also be one or more.

[0052] See also Figure 4 , Figure 8 and Fig. 9In one embodiment, the central magnetic circuit 111 includes a central magnet 1111, a first intermediate magnet 1112, and a second intermediate magnet 1113. The central magnet 1111, the first intermediate magnet 1112, and the second intermediate magnet 1113 are all arranged on a central magnetic yoke 1114 on the side away from the diaphragm 21. The first intermediate magnet 1112 and the second intermediate magnet 1113 are respectively arranged on both sides of the central magnet 1111 along the second direction; the central magnetic plate includes an intermediate magnetic plate 121, a first magnetic plate 122, and a second magnetic plate 123. The side magnetic circuit 112 includes a side magnet 1121. The side magnetic yoke 1122 is arranged on the side of the side magnet 1121 away from the diaphragm 21. The side magnetic plate 124 is arranged on the side of the side magnet 1121 toward the diaphragm. On one side of the membrane 21, the central magnet 1111 is arranged on the middle magnetic conductive plate 121 facing the diaphragm 21, the middle magnetic conductive plate 121 is connected to the side magnetic conductive plate 124 along the third direction, the first magnetic conductive plate 122 is arranged on the side of the first middle magnet 1112 facing the diaphragm 21, and the second magnetic conductive plate 123 is arranged on the side of the second middle magnet 1113 facing the diaphragm 21; the central magnet 1111, the first middle magnet 1112, the second middle magnet 1113 and the side magnet 1121 are all magnetized along the first direction, and the magnetization direction of the central magnet 1111 is the same as the magnetization direction of the side magnet 1121, and the magnetization directions of the first middle magnet 1112 and the second middle magnet 1113 are opposite to the magnetization direction of the central magnet 1111. Among them, the center magnet 1111 is arranged on the middle magnetic plate 121, and the side of the center magnet 1111, the first middle magnet 1112 and the second middle magnet 1113 away from the diaphragm 21 are all arranged on the center magnetic yoke 1114, so that the middle magnetic plate 121 can support the center magnetic circuit 111, at least part of the structure of the side magnet 1121 is arranged on the middle magnetic plate 121, and the side magnetic yoke 1122 is arranged on the side of the side magnet 1121 away from the diaphragm 21, so that the middle magnetic plate 121 can also provide support for the side magnetic circuit 112, thereby making it possible to reduce the thickness of the sound unit 100 by thinning the traditional back cover. It should be noted that the side magnet 1121 can be a ring magnet.

[0053] In one embodiment, the magnet unit 11 includes a central magnetic circuit 111 and a side magnetic circuit 112 arranged on the periphery of the central magnetic circuit 111, and the central magnetic circuit 111 and the side magnetic circuit 112 are arranged at intervals. The magnetic yoke unit includes a central magnetic yoke 1114 and a side magnetic yoke 1122, the central magnetic yoke 1114 is connected to the central magnetic circuit 111, the side magnetic yoke 1122 is connected to the side magnetic circuit 112, and an auxiliary magnetic gap is formed between the central magnetic yoke 1114 and the side magnetic yoke 1122; the magnetic plate unit 12 includes a central magnetic plate and a side magnetic plate 124, the central magnetic plate is connected to the central magnetic circuit 111, and the side magnetic plate 124 is connected to the side magnetic circuit 112, wherein the side magnetic plate 124 is connected to the shell 3, and the central magnetic plate is connected to the shell 3 along a third direction, and the third direction is perpendicular to the first direction and the second direction. The two ends of the central magnetic conductive plate extending along the third direction are respectively connected to the shell 3, and the side magnetic conductive plates 124 are respectively arranged on both sides of the central magnetic conductive plate along the second direction. Specifically, the middle magnetic conductive plate 121 includes a middle magnetic conductive portion 1211 and side magnetic conductive portions 1212 respectively arranged at both ends of the middle magnetic conductive portion 1211. The central magnet 1111 is arranged on the side of the diaphragm 21 facing the middle magnetic conductive portion 1211. The side magnet 1121 includes a first magnet block 11211, a second magnet block 11212, a third magnet block 11213 and a fourth magnet block 11214 which are arranged in sequence along the circumferential direction of the auxiliary voice coil 24. The first magnet block 11211, the second magnet block 11212, The third magnet block 11213 and the fourth magnet block 11214 are both arranged on the edge magnetic yoke 1122, the first magnet block 11211 and the third magnet block 11213 are arranged at intervals along the third direction, the second magnet block 11212 and the fourth magnet block 11214 are arranged at intervals along the second direction, the first direction, the second direction and the third direction are orthogonal to each other, the first magnet block 11211 and the third magnet block 11213 are respectively arranged on two edge magnetic portions 1212 on the side facing the diaphragm 21, the second magnet block 11212 and the fourth magnet block 11214 are both arranged on the edge magnetic plate 124 on the side facing the diaphragm 21, and the two edge magnetic portions 1212 are both connected to the shell 3. The middle magnetic conductive part 1211 is used to connect with the center magnet 1111, and the side magnetic conductive part 1212 is used to connect with the first magnet block 11211 and the third magnet block 11213, so as to realize the support and fixation of the center magnetic circuit 111 and the side magnetic circuit 112 through the middle magnetic conductive plate 121. It should be noted that the side magnet 1121 surrounds the periphery of the center magnetic circuit 111 and is spaced apart from the center magnetic circuit 111. It should also be noted that the third direction is Figure 8 Front-to-back orientation shown.

[0054] According to an embodiment of the present invention, the magnetic circuit system 1 also includes a magnetic component, which is arranged in the connecting component 25. The magnetic component is located between the middle magnetic conductive plate 121 and the central magnetic conductive yoke 1114. The magnetic component will be affected by the static magnetic force. When the position of the magnetic component is a balanced position, the static magnetic force on the magnetic component is zero. At this time, taking the first voice coil 22 as an example, if the first voice coil 22 vibrates upward from the balanced position, the magnetic component moves upward with the voice coil. At this time, the resultant force of the static magnetic force on the magnetic component is upward, and the direction of the resultant force of the static magnetic force on the magnetic component is consistent with the vibration direction of the first voice coil 22, thereby effectively increasing the driving force of the first voice coil 22 on the diaphragm 21, and improving the performance of the sound unit 100. Since the first voice coil 22 and the second voice coil 23 are both The connecting assembly 25 is connected to the auxiliary voice coil 24, so the driving force of the second voice coil 23 and the auxiliary voice coil 24 on the diaphragm 21 is also increased; similarly, taking the first voice coil 22 as an example, if the first voice coil 22 vibrates downward from the equilibrium position, the magnetic part moves downward together with the first voice coil 22, and the resultant force of the static magnetic force on the magnetic part is downward, and the resultant force of the static magnetic force on the magnetic part is consistent with the vibration direction of the first voice coil 22, which also effectively increases the driving force of the first voice coil 22 on the diaphragm 21 and improves the performance of the sound unit 100. Since the first voice coil 22 and the second voice coil 23 are both connected to the auxiliary voice coil 24 through the connecting assembly 25, the driving force of the second voice coil 23 and the auxiliary voice coil 24 on the diaphragm 21 is also increased. It should be noted that the magnetic part can be a permanent magnetic material, such as ferrite, precious metal alloy, etc.; the magnetic part can also be a magnetic conductive material; the magnetic part can also be a soft magnetic material, such as pure iron, nickel, etc. It should also be noted that the number of magnetic components can be one or more, and there is no limitation here. When the number of magnetic components is two, the two magnetic components are respectively arranged corresponding to the first voice coil 22 and the second voice coil 23.

[0055] According to an embodiment of the present invention, the two side magnetic conductive portions 1212 are injection molded on the housing 3 , which improves the connection strength between the middle magnetic conductive plate 121 and the housing 3 and facilitates the assembly of the middle magnetic conductive plate 121 .

[0056] According to another embodiment of the present invention, the side magnetic conductive plate 124 is injection molded on the shell 3. Since the second magnet block 11212 and the fourth magnet block 11214 are arranged on the side of the side magnetic conductive plate 124 facing the diaphragm 21, and the first magnet block 11211, the second magnet block 11212, the third magnet block 11213 and the fourth magnet block 11214 are arranged on the side magnetic conductive yoke 1122 away from the diaphragm 21, the side magnetic conductive plate 124 can also provide effective support for the side magnetic circuit 112.

[0057] See also Figure 4 , Figure 5 and Fig.10According to one embodiment of the present invention, the central magnetic yoke 1114 includes a first body 11141 and a first flange 11142, the first flange 11142 is bent from the outer periphery of the first body 11141 toward the direction of the diaphragm 21, and the first intermediate magnet 1112 and the second intermediate magnet 1113 are respectively provided with a first avoidance groove 11121 and a second avoidance groove 11131 for avoiding the first flange 11142 on one side of the first flange 11142; by providing the first flange 11142, it is beneficial to improve the driving force factor BL of the auxiliary voice coil 24, and it can also make the driving force trend of the auxiliary voice coil 24 on the diaphragm 21 flatter, thereby reducing the distortion of the sound unit 100.

[0058] According to another embodiment of the present invention, the side magnet yoke 1122 includes a second body 11221 and a second flange 11222, the second flange 11222 is bent from the inner periphery of the second body 11221 toward the diaphragm 21, and a flange avoidance groove 11215 for avoiding the second flange 11222 is provided on the side of the side magnet 1121 facing the second flange 11222. The second flange 11222 is provided to improve the driving force factor BL of the auxiliary voice coil 24, and also to make the driving force of the auxiliary voice coil 24 on the diaphragm 21 more flat, thereby reducing the distortion of the sound unit 100.

[0059] Please refer to 10, wherein curve a is the BL value curve of the sound unit 100, and curve b is the BL value curve of the traditional single-layer voice coil. The horizontal axis in the figure represents displacement, and the unit is mm, and the vertical axis represents BL, and the unit is Wb / m. Through the cooperation between the first flange 11142 and the second flange 11222, the driving force factor BL of the auxiliary voice coil 24 can be further improved, so that the driving force trend of the auxiliary voice coil 24 on the diaphragm 21 is flatter, thereby reducing the distortion of the sound unit 100. It should be noted that the first intermediate magnet 1112 is provided with a first avoidance groove 11121 corresponding to the first flange 11142, which not only avoids the interference between the first intermediate magnet 1112 and the first flange 11142, but also effectively reduces the thickness of the sound unit 100; similarly, the second intermediate magnet 1113 is provided with a second avoidance groove 11131 corresponding to the first flange 11142, which not only avoids the interference between the second intermediate magnet 1113 and the first flange 11142, but also effectively reduces the thickness of the sound unit 100; the side magnet 1121 is provided with a flange avoidance groove 11215 corresponding to the second flange 11222, which not only avoids the interference between the side magnet 1121 and the second flange 11222, but also effectively reduces the thickness of the sound unit 100.

[0060] See also Figure 4 , Figure 5 and Figure 8According to one embodiment of the present invention, the sound unit 100 also includes a back cover 4, and the side of the magnet unit 11 facing away from the diaphragm 21 is arranged on the back cover 4; the back cover 4 protrudes in the direction away from the diaphragm 21 to form an annular avoidance groove 41, and the notch of the annular avoidance groove 41 is arranged toward the auxiliary magnetic gap 113 and connected with the auxiliary magnetic gap 113, and the annular avoidance groove 41 is used to avoid the auxiliary voice coil 24; by forming the annular avoidance groove 41 on the back cover 4 to avoid the auxiliary voice coil 24, sufficient downward vibration space is provided for the auxiliary voice coil 24, thereby effectively improving the performance of the sound unit 100.

[0061] According to another embodiment of the present invention, the sound unit 100 also includes a back cover 4, and the side of the magnet unit 11 facing away from the diaphragm 21 is arranged on the back cover 4; the back cover 4 is a metal sheet; compared with traditional speakers, the sound unit 100 has a smaller thickness by using a metal sheet as the back cover 4.

[0062] According to another embodiment of the present invention, the vibration system 2 further includes a plurality of balanced diaphragms 21, which are all arranged on the side of the edge-conducting magnetic yoke 1122 away from the diaphragm 21, one end of each balanced diaphragm 21 is connected to the edge-conducting magnetic yoke 1122, and the other end of each balanced diaphragm 21 is connected to the auxiliary voice coil 24, and the plurality of balanced diaphragms 21 are evenly spaced and arranged along the circumference of the auxiliary voice coil 24, thereby playing a role in balancing the auxiliary voice coil 24, and the edge-conducting magnetic yoke 1122 is provided with avoidance holes for avoiding the balanced diaphragms 21, and the number of the avoidance holes is consistent with that of the balanced diaphragms 21 and is arranged one-to-one. It should be noted that there are four balanced diaphragms 21, and the four balanced diaphragms 21 are arranged at the four corners of the auxiliary voice coil 24.

[0063] See also Figures 3 to 5 In one embodiment, the connection assembly 25 includes an elastic support member 251 and a rigid connection member 252, one end of the elastic support member 251 is connected to the housing 3, the first voice coil 22 and the second voice coil 23 are connected to the other end of the elastic support member 251 on the side away from the diaphragm 21, one end of the rigid connection member 252 is connected to the side of the elastic support member 251 away from the first voice coil 22 and the second voice coil 23, and the other end of the rigid connection member 252 is connected to the auxiliary voice coil 24. The elastic support member 251 plays a centering and supporting role for the first voice coil 22 and the second voice coil 23, preventing the first voice coil 22 and the second voice coil 23 from polarizing, and improving the vibration stability of the first voice coil 22 and the second voice coil 23. Since the first voice coil 22 and the second voice coil 23 are connected to the auxiliary voice coil 24 through the rigid connection member 252, the elastic support member 251 can also play a centering and supporting role for the auxiliary voice coil 24, preventing the auxiliary voice coil 24 from polarizing, and improving the vibration stability of the auxiliary voice coil 24.

[0064] According to an embodiment of the present invention, a leakage hole 11223 is provided on the side guide yoke 1122, and an isolation mesh hole 42 correspondingly connected to the leakage hole 11223 is provided on the rear cover 4. By providing the isolation mesh hole 42 on the rear cover 4 to connect with the leakage hole 11223, the air pressure is balanced.

[0065] According to another embodiment of the present invention, a support plate magnetic member is arranged on the elastic support member 251, wherein the support plate magnetic member can be made of a permanent magnetic material, such as ferrite, precious metal alloy, etc.; the support plate magnetic member can also be made of a magnetic conductive material; the support plate magnetic member can also be made of a soft magnetic material, such as pure iron, nickel, etc.; wherein the support plate magnetic member will be affected by a static magnetic force, and when the first voice coil 22 and the second sound cavity vibrate upward from the equilibrium position, the resultant force direction of the static magnetic force on the support plate magnetic member is also upward, and the force will act on the first voice coil 22 and the second voice coil 23 through the elastic support member 251. Since the resultant force direction of the static magnetic force on the support plate magnetic member is the same as that of the first voice coil 22 and the second voice coil 23, The vibration directions of the first voice coil 22 and the second voice coil 23 are consistent, thereby effectively increasing the driving force of the first voice coil 22 and the second voice coil 23 on the diaphragm 21, thereby effectively improving the sensitivity of the sound unit 100; similarly, when the first voice coil 22 and the second sound cavity vibrate downward from the equilibrium position, the resultant direction of the static magnetic force on the support magnetic part is also downward, and this force will act on the first voice coil 22 and the second voice coil 23 through the elastic support part 251. Since the resultant direction of the static magnetic force on the support magnetic part is consistent with the vibration direction of the first voice coil 22 and the second voice coil 23, the driving force of the first voice coil 22 and the second voice coil 23 on the diaphragm 21 is effectively increased, thereby effectively improving the sensitivity of the sound unit 100.

[0066] According to one embodiment of the present invention, the elastic support member 251 includes an annular fixing portion, a mounting portion and an elastic arm portion connecting the annular fixing portion and the mounting portion, the mounting portion is connected to the shell, and the first voice coil 22 and the second voice coil 23 are both connected to the annular fixing portion; the elastic support member 251 is an integral structural member, and therefore has better supporting stability for the first voice coil 22 and the second voice coil 23, and the use of the elastic support member 251 can also facilitate wiring.

[0067] See also Figure 3 , Figure 6 and Figure 7According to another embodiment of the present invention, the elastic support member 251 includes a first centering support piece 2511 and a second centering support piece 2512, and the rigid connection member 252 includes a first rigid connection part and a second rigid connection part. Both ends of the first centering support piece 2511 are connected to the housing 3, one side of the first centering support piece 2511 is connected to the first voice coil 22, and the other side of the first centering support piece 2511 is connected to the first rigid connection part. Both ends of the second centering support piece 2512 are connected to the housing 3, one side of the second centering support piece 2512 is connected to the second voice coil 23, and the other side of the second centering support piece 2512 is connected to the second rigid connection part. By providing the first centering support piece 2511 to center and support the first voice coil 22, polarization of the first voice coil 22 is prevented, and the vibration stability of the first voice coil 22 is improved; by providing the second centering support piece 2512 to center and support the second voice coil 23, polarization of the second voice coil 23 is prevented, and the vibration stability of the second voice coil 23 is improved. Compared with using an integral centering support plate, using two independent first centering support plates 58 and second centering support plates 59 is less costly.

[0068] In one embodiment, the sound unit 100 further includes a first solder pad 51 and a second solder pad 52, a third solder pad 53 and a fourth solder pad 54. The first solder pad 51 and the third solder pad 53 are relatively arranged on both sides of the first centering support plate 2511, and the second solder pad 52 and the fourth solder pad 54 are relatively arranged on both sides of the second centering support plate 2512. The first solder pad 51 is arranged toward the first voice coil 22, and the second solder pad 52 is arranged toward the second voice coil 23. The first voice coil 22 is electrically connected to the first solder pad 51, the second voice coil 23 is electrically connected to the second solder pad 52, and the third solder pad 53 and the fourth solder pad 54 are both electrically connected to the auxiliary voice coil 24. Compared with the circuit board connected to the voice coil, the sound unit 100 of this embodiment has the first pad 51 and the third pad 53 arranged on both sides of the first centering support 2511, and the second pad 52 and the fourth pad 54 arranged on both sides of the second centering support 2512, thereby eliminating the circuit board structure, which helps to reduce the thickness of the sound unit 100. It should be noted that the number of the first pad 51 is two, and the number of the second pad 52 is also two. It should also be noted that the first centering support 2511 and the second centering support 2512 not only realize the electrical connection between the first voice coil 22 and the second voice coil 23, but also realize the electrical connection between the first voice coil 22, the second voice coil 23 and the auxiliary voice coil 24 and the external circuit.

[0069] According to an embodiment of the present invention, the first centering support piece 2511 includes a first fixing portion 25111, two first elastic arms 25112 and two first mounting portions 25113. The two first elastic arms 25112 are respectively arranged at both ends of the first fixing portion 25111. The two first mounting portions 25113 are respectively arranged corresponding to one first elastic arm 25112. Each first mounting portion 25113 is connected to the housing 3. The first soldering pad 51 and the third soldering pad 53 are respectively arranged on the first fixing portion 25111. 11; the second centering support piece 2512 includes a second fixing portion 25121, two second elastic arms 25122 and two second mounting portions 25123, the two second elastic arms 25122 are respectively arranged at the two ends of the second fixing portion 25121, the two second mounting portions 25123 are respectively arranged corresponding to a second elastic arm 25122, each second mounting portion 25123 is connected to the housing 3, and the second soldering pad 52 and the fourth soldering pad 54 are respectively arranged on both sides of the second fixing portion 25121. The first centering support piece 2511 and the second centering support piece 2512 can jointly play a centering and supporting role for the first voice coil 22, the second voice coil 23 and the auxiliary voice coil 24, prevent the first voice coil 22, the second voice coil 23 and the auxiliary voice coil 24 from polarization, and improve the vibration stability of the first voice coil 22, the second voice coil 23 and the auxiliary voice coil 24.

[0070] The present invention also proposes a sound module, which includes a housing and the above-mentioned sound unit 100, the sound unit 100 is arranged in the housing, and the sound module can be a speaker module. The sound module can be applied to electronic devices such as computers, mobile phones, and smart wearable devices. 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.

[0071] 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, the magnetic circuit system comprising a magnetic yoke unit, a magnet unit and a magnetic plate unit, the magnetic yoke unit and the magnetic plate unit are respectively arranged on opposite sides of the magnet unit along a first direction, the magnetic plate unit forms a main magnetic gap, the magnetic yoke unit forms an auxiliary magnetic gap, the main magnetic gap comprises a first magnetic gap and a second magnetic gap arranged at intervals along a second direction, the first magnetic gap and the second magnetic gap are both connected to the auxiliary magnetic gap, and the first direction and the second direction are perpendicular to each other; A vibration system, wherein the vibration system vibrates along the first direction, the vibration system comprises a diaphragm, a first voice coil, a second voice coil, an auxiliary voice coil and a connecting component, wherein the first voice coil is located in the first magnetic gap, the second voice coil is located in the second magnetic gap, the auxiliary voice coil is located in the auxiliary magnetic gap, the first voice coil and the second voice coil are both connected to the auxiliary voice coil through the connecting component, the first voice coil and the second voice coil are both connected to the diaphragm at a side away from the auxiliary voice coil, and the current direction of the first voice coil and the current direction of the second voice coil are opposite to the current direction of the auxiliary voice coil; The vibration system and the magnetic circuit system are respectively arranged at the two ends of the shell along the first direction, the outer periphery of the diaphragm is connected to the shell, the magnet unit is arranged on the magnetic plate unit facing the diaphragm, the magnetic plate unit is connected to the shell, and the magnet unit and the magnetic yoke unit are connected to the shell through the magnetic plate unit.

2. The sound-emitting unit according to claim 1, characterized in that: The magnet unit includes a central magnetic circuit and a side magnetic circuit arranged on the periphery of the central magnetic circuit, the central magnetic circuit and the side magnetic circuit are arranged at intervals, the magnetic yoke unit includes a central magnetic yoke and a side magnetic yoke, the central magnetic yoke is connected to the central magnetic circuit, the side magnetic yoke is connected to the side magnetic circuit, and the auxiliary magnetic gap is formed between the central magnetic yoke and the side magnetic yoke; the magnetic plate unit includes a central magnetic plate and a side magnetic plate, the central magnetic plate is connected to the central magnetic circuit, and the side magnetic plate is connected to the side magnetic circuit, wherein, The side magnetic conductive plates are connected to the shell, and the central magnetic conductive plates are connected to the side magnetic conductive plates along a third direction, and the third direction is perpendicular to the first direction and the second direction.

3. The sound-emitting unit according to claim 2, characterized in that: The central magnetic circuit includes a central magnet, a first intermediate magnet and a second intermediate magnet, the central magnet, the first intermediate magnet and the second intermediate magnet are all arranged on the central magnetic yoke on the side away from the diaphragm, and the first intermediate magnet and the second intermediate magnet are respectively arranged on both sides of the central magnet along the second direction; the central magnetic plate includes an intermediate magnetic plate, a first magnetic plate and a second magnetic plate, the side magnetic circuit includes a side magnet, the side magnetic yoke is arranged on the side of the side magnet away from the diaphragm, the side magnetic plate is arranged on the side of the side magnet facing the diaphragm, and the central magnet faces The middle magnetic conductive plate is arranged on one side of the diaphragm, and the middle magnetic conductive plate is connected to the side magnetic conductive plate along the third direction. The first magnetic conductive plate is arranged on the side of the first middle magnet facing the diaphragm, and the second magnetic conductive plate is arranged on the side of the second middle magnet facing the diaphragm; the central magnet, the first middle magnet, the second middle magnet and the side magnet are all magnetized along the first direction, and the magnetization direction of the central magnet is the same as the magnetization direction of the side magnet, and the magnetization directions of the first middle magnet and the second middle magnet are opposite to the magnetization direction of the central magnet.

4. The sound-emitting unit according to claim 1, characterized in that: The magnet unit includes a central magnetic circuit and a side magnetic circuit arranged on the periphery of the central magnetic circuit, the central magnetic circuit and the side magnetic circuit are arranged at intervals, the magnetic yoke unit includes a central magnetic yoke and a side magnetic yoke, the central magnetic yoke is connected to the central magnetic circuit, the side magnetic yoke is connected to the side magnetic circuit, and the auxiliary magnetic gap is formed between the central magnetic yoke and the side magnetic yoke; the magnetic plate unit includes a central magnetic plate and a side magnetic plate, the central magnetic plate is connected to the central magnetic circuit, and the side magnetic plate is connected to the side magnetic circuit, wherein, The side magnetic conductive plate is connected to the shell, and the central magnetic conductive plate is connected to the shell along a third direction, and the third direction is perpendicular to the first direction and the second direction.

5. The sound-emitting unit according to claim 2, characterized in that: The side magnetic conductive plate is injection molded on the shell.

6. The sound-emitting unit according to claim 3, characterized in that: The central magnetic yoke comprises a first body and a first flange, wherein the first flange is bent from the outer periphery of the first body toward the diaphragm, and the first intermediate magnet and the second intermediate magnet are respectively provided with a first avoidance groove and a second avoidance groove for avoiding the first flange on one side facing the first flange; and / or, The edge magnetic yoke includes a second body and a second flange, the second flange is bent from the inner periphery of the second body toward the diaphragm, and a flange avoidance groove for avoiding the second flange is provided on the side of the edge magnet facing the second flange.

7. The sound-emitting unit according to any one of claims 1 to 6, characterized in that: The sound-emitting unit further comprises a rear cover, and the magnet unit is arranged on the rear cover at a side facing away from the diaphragm; The rear cover protrudes in a direction away from the diaphragm to form an annular avoidance groove, the notch of the annular avoidance groove is arranged toward the auxiliary magnetic gap and communicated with the auxiliary magnetic gap, and the annular avoidance groove is used to avoid the auxiliary voice coil; and / or, The back cover is a metal sheet.

8. The sound-emitting unit according to any one of claims 1 to 6, characterized in that: The connecting component includes an elastic supporting member and a rigid connecting member, one end of the elastic supporting member is connected to the shell, the first voice coil and the second voice coil are connected to the other end of the elastic supporting member on one side away from the first voice coil and the second voice coil, and the other end of the rigid connecting member is connected to the auxiliary voice coil.

9. The sound-emitting unit according to claim 8, characterized in that: The elastic support member includes an annular fixing portion, a mounting portion, and an elastic arm portion connecting the annular fixing portion and the mounting portion, the mounting portion is connected to the housing, and the first voice coil and the second voice coil are both connected to the annular fixing portion; Alternatively, the elastic support member includes a first centering support plate and a second centering support plate, the rigid connecting member includes a first rigid connecting portion and a second rigid connecting portion, both ends of the first centering support plate are connected to the shell, one side of the first centering support plate is connected to the first voice coil, and the other side of the first centering support plate is connected to the first rigid connecting portion, both ends of the second centering support plate are connected to the shell, one side of the second centering support plate is connected to the second voice coil, and the other side of the second centering support plate is connected to the second rigid connecting portion.

10. The sound-emitting unit according to claim 9, characterized in that: The sound unit also includes a first solder pad and a second solder pad, a third solder pad and a fourth solder pad, the first solder pad and the third solder pad are relatively arranged on both sides of the first centering support plate, the second solder pad and the fourth solder pad are relatively arranged on both sides of the second centering support plate, the first solder pad is arranged toward the first voice coil, the second solder pad is arranged toward the second voice coil, the first voice coil is electrically connected to the first solder pad, the second voice coil is electrically connected to the second solder pad, and the third solder pad and the fourth solder pad are both electrically connected to the auxiliary voice coil.

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, wherein the sound unit is arranged in the housing.

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