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 and a vibration system, the magnetic circuit system comprises a magnetic circuit unit, the magnetic circuit unit forms a first magnetic gap and a second magnetic gap, the magnetic circuit unit comprises a central magnetic circuit, a middle magnetic circuit and a side magnetic circuit, the middle magnetic circuit comprises a first middle magnetic circuit and a second middle magnetic circuit, the first magnetic gap surrounds the first middle magnetic circuit, and the second magnetic gap surrounds the second middle magnetic circuit; the vibration system comprises a diaphragm, a first voice coil, a second voice coil and a magnetic assembly, the first voice coil is located in the first magnetic gap, the second voice coil is located in the second magnetic gap, one sides of the first voice coil and the second voice coil are connected with the diaphragm, the other sides are connected with the magnetic assembly, and the current directions of the first voice coil and the second voice coil are the same. The magnetic assembly can provide acting force opposite to the restoring force of the vibrating diaphragm for the first voice coil and the second voice coil, and the performance of the sound production monomer is improved by additionally arranging the magnetic assembly.

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. If the size of the speaker is reduced, the performance of the speaker will be weakened, because the means of improving the performance of traditional speakers is usually to increase the volume of the magnet to obtain better performance, but the use of large-volume magnets will cause the size of the speaker to increase, resulting in the speaker being unable to meet the size requirements. However, if the size of the speaker is reduced, the space inside the speaker will also decrease, that is, the space for accommodating the magnet may also decrease. In the case of insufficient space, only smaller magnets can be used, but the reduction in the volume of the magnet will cause the performance of the speaker to even fail to meet the requirements of the entire machine. 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 improve the performance 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 circuit unit, the magnetic circuit unit forming a first magnetic gap and a second magnetic gap, the magnetic circuit unit comprising a central magnetic circuit, an intermediate magnetic circuit arranged on a peripheral side of the central magnetic circuit, and a side magnetic circuit arranged on a peripheral side of the intermediate magnetic circuit, the intermediate magnetic circuit comprising 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;

[0006] A vibration system, wherein the vibration system vibrates along a first direction, the vibration system comprises a diaphragm, a first voice coil, a second voice coil and a magnetic assembly, the first voice coil is located in the first magnetic gap, the second voice coil is located in the second magnetic gap, one side of the first voice coil is connected to the diaphragm, the other side of the first voice coil is connected to the magnetic assembly, one side of the second voice coil is connected to the diaphragm, the other side of the second voice coil is connected to the magnetic assembly, the current directions of the first voice coil and the second voice coil are the same, and the magnetic assembly can provide the first voice coil and the second voice coil with a force opposite to the direction of the diaphragm restoring force;

[0007] The first voice coil and / or the second voice coil has a long side extending along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0008] In one embodiment, the sound unit also includes a shell, the vibration system and the magnetic circuit system are respectively arranged at two ends of the shell, the outer periphery of the diaphragm is connected to the shell, and the magnetic circuit system also includes a magnetic yoke, which is arranged on the side of the magnetic circuit unit away from the diaphragm, and the magnetic yoke is provided with an avoidance hole corresponding to the magnetic component.

[0009] In one embodiment, the magnetic yoke includes a middle magnetic yoke and a side magnetic yoke, the middle magnetic yoke is spaced from the side magnetic yoke, the central magnetic circuit and the middle magnetic circuit are both arranged on the middle magnetic yoke on a side away from the diaphragm, and the side magnetic circuit is arranged on the side magnetic yoke on a side away from the diaphragm;

[0010] The central magnetic circuit includes a central magnet and a central magnetic conductive plate. The central magnetic conductive plate is arranged on a side of the central magnet facing the diaphragm. Both ends of the central magnetic conductive plate along the third direction are connected to the shell.

[0011] In one embodiment, the side magnetic circuit includes a side magnet and a side magnetic conductive plate, the side magnetic conductive plate is connected to the shell, and the side of the side magnet facing the diaphragm is provided with a first connection area and a second connection area, the first connection area is connected to the center magnetic conductive plate, and the second connection area is connected to the side magnetic conductive plate.

[0012] In one embodiment, the first connection area and the second connection area are spaced apart from each other;

[0013] And / or, the side magnetic conductive plate is injection molded on the shell;

[0014] And / or, two ends of the central magnetic conductive plate are injection molded on the shell.

[0015] In one embodiment, 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 diaphragm, the second intermediate magnetic conductive plate is arranged on the side of the second intermediate magnet facing the diaphragm, and the side magnetic conductive plate is arranged on the side of the side magnet facing the 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, and the magnetization directions of the first intermediate magnet and the second intermediate magnet are opposite to the magnetization direction of the central magnet.

[0016] In one embodiment, the magnetic circuit system further includes a magnetic yoke, which is disposed on a side of the magnetic circuit unit facing away from the diaphragm, and the magnetic yoke is provided with an avoidance hole corresponding to the magnetic component.

[0017] In one embodiment, the magnetic assembly includes a first magnetic component and a second magnetic component, the first magnetic component is connected to the first voice coil, the second magnetic component is connected to the second voice coil, and the avoidance hole includes a first avoidance hole and a second avoidance hole, the first avoidance hole avoids the first magnetic component, and the second avoidance hole avoids the second magnetic component.

[0018] In one embodiment, the magnetically conductive yoke comprises a middle magnetically conductive yoke and a side magnetically conductive yoke, and the middle magnetically conductive yoke is spaced apart from the side magnetically conductive yoke;

[0019] The first avoidance hole and the second avoidance hole are provided between the middle magnetic conductive yoke and the side magnetic conductive yoke;

[0020] Alternatively, the intermediate magnetic conductive yoke is provided with the first avoidance hole and the second avoidance hole;

[0021] Alternatively, the first avoidance hole and the second avoidance hole are provided between the middle magnetic conductive yoke and the side magnetic conductive yoke and on the middle magnetic conductive yoke.

[0022] In one embodiment, the first magnetic member is annular, and the first avoidance hole is annular;

[0023] And / or, the second magnetic member is annular, and the second avoidance hole is annular.

[0024] In one embodiment, the number of the first magnetic members is multiple, and the multiple first magnetic members are arranged at intervals along the circumference of the first voice coil, and the number of the first avoidance holes is consistent with that of the first magnetic members and are arranged in a one-to-one correspondence;

[0025] And / or, there are multiple second magnetic components, the multiple second magnetic components are arranged at intervals along the circumference of the second voice coil, and the number of the second avoidance holes is consistent with that of the second magnetic components and is arranged in a one-to-one correspondence.

[0026] In one embodiment, the sound-emitting unit further includes a rear cover, and the rear cover is arranged on a side of the magnetic yoke away from the diaphragm;

[0027] The rear cover protrudes in a direction away from the diaphragm to form an avoidance groove, and the avoidance groove is arranged corresponding to the avoidance hole;

[0028] And / or, a leakage hole is arranged on the magnetic yoke, and an isolation mesh hole corresponding to and connected to the leakage hole is arranged on the back cover.

[0029] In one embodiment, the sound unit further includes an elastic support member, one end of the elastic support member is connected to the shell, and the first voice coil and the second voice coil are both connected to the other end of the elastic support member.

[0030] In one embodiment, the elastic support member includes a first centering support piece and a second centering support piece, the first centering support piece and the second centering support piece are arranged at intervals along the third direction, the first centering support piece 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 of the first mounting portions is connected to the housing, and the first fixing portion is connected to the first voice coil and the second voice coil;

[0031] 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 shell, and the second fixing portion is connected to the first voice coil and the second voice coil.

[0032] 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 third pad are arranged on the first fixing portion, the second pad and the fourth pad are arranged on the second fixing portion, the first pad and the second pad are both electrically connected to the first voice coil, and the third pad and the fourth pad are both electrically connected to the second voice coil.

[0033] 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.

[0034] The technical solution of the present invention drives the diaphragm to vibrate by using a first voice coil and a second voice coil spaced apart along a second direction, and the current directions of the first voice coil and the second voice coil are the same, and the driving force directions generated are also the same. The diaphragm is driven to vibrate by the first voice coil and the second voice coil, so that the speaker has better performance than a single voice coil speaker. In addition, by arranging the first voice coil and the second voice coil on the side away from the diaphragm on the magnetic component, 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, if the first voice coil and the second voice coil vibrate upward from the balanced position, the magnetic component will vibrate with the first voice coil and the second voice coil. When the first voice coil and the second voice coil move in the same upward direction, the resultant direction of the static magnetic force on the magnetic component is upward, which is consistent with the vibration direction of the first voice coil and the second voice coil, thereby effectively increasing the driving force of the first voice coil and the second voice coil on the diaphragm and improving the performance of the sound unit; similarly, if the first voice coil and the second voice coil vibrate downward from the equilibrium position, the magnetic component moves downward with the first voice coil and the second voice coil. At this time, the resultant direction of the static magnetic force on the magnetic component is downward, which is consistent with the vibration direction of the first voice coil and the second voice coil, thus effectively increasing the driving force of the first voice coil and the second voice coil on the diaphragm, thereby improving the performance of the sound unit without affecting the thickness of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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.

[0036] Figure 1 A schematic structural diagram of an embodiment of a sound-emitting unit provided by the present invention;

[0037] Figure 2 A schematic structural diagram of another perspective of an embodiment of a sound-emitting unit provided by the present invention;

[0038] Figure 3 A schematic diagram of the decomposed structure of an embodiment of a sound-emitting unit provided by the present invention;

[0039] Figure 4 A schematic cross-sectional structure diagram of an embodiment of a sound-emitting unit provided by the present invention;

[0040] Figure 5 A schematic cross-sectional view of a portion of the structure of an embodiment of a sound-emitting unit provided by the present invention;

[0041] Figure 6 A schematic cross-sectional view of a portion of the structure of another embodiment of a sound-emitting unit provided by the present invention;

[0042] Figure 7 A schematic diagram of the decomposed structure of another embodiment of the sound-emitting unit provided by the present invention;

[0043] Figure 8 A schematic diagram of the structure of the first voice coil, the second voice coil and the centering support provided by the present invention;

[0044] Fig. 9 A schematic structural diagram of a first voice coil, a second voice coil and a magnetic assembly provided by the present invention;

[0045] Fig.10 A schematic cross-sectional structure diagram of another embodiment of a sound-emitting unit provided by the present invention;

[0046] Fig.11 A schematic structural diagram of a central magnetic conductive plate and a shell according to an embodiment of the present invention;

[0047] Fig.12 A schematic structural diagram of an embodiment of a magnetic yoke provided by the present invention.

[0048] Description of Figure Numbers:

[0049] 100, sound-generating unit; 1, magnetic circuit system; 11, magnetic circuit unit; 111, central magnetic circuit; 1111, central magnet; 1112, central magnetic plate; 112, intermediate magnetic circuit; 1121, first intermediate magnetic circuit; 11211, first intermediate magnet; 11212, first intermediate magnetic plate; 1122, second intermediate magnetic circuit; 11221, second intermediate magnet; 11222, second intermediate magnetic plate; 113, side magnetic circuit; 1131, side magnet; 11311, first magnet block; 11312, second magnet block; 11313, third magnet block; 11314, fourth magnet block; 1132, side magnetic plate; 114, first magnetic gap; 115, second magnetic gap; 2, vibration system; 21, diaphragm; 211 , reinforcement part; 22, first voice coil; 23, second voice coil; 24, magnetic component; 241, first magnetic part; 242, second magnetic part; 25, magnetic yoke; 251, first avoidance hole; 252, second avoidance hole; 253, leakage hole; 254, middle magnetic yoke; 255, side magnetic yoke; 3, shell; 4, back cover; 41, isolation mesh; 42, avoidance groove; 5, elastic support member; 51, first centering support plate; 511, first fixing part; 512, first elastic arm part; 513, first mounting part; 52, second centering support plate; 521, second fixing part; 522, second elastic arm part; 523, second mounting part; 531, first welding pad; 532, second welding pad; 533, third welding pad; 534, fourth welding pad.

[0050] 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

[0051] 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.

[0052] 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.

[0053] 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.

[0054] As smart products become thinner, the limited internal space poses a great challenge to the acoustic performance of speakers. If the size of the speaker is reduced, the performance of the speaker will be weakened, because the means of improving the performance of traditional speakers is usually to increase the volume of the magnet to obtain better performance, but the use of large-volume magnets will cause the size of the speaker to increase, resulting in the speaker being unable to meet the size requirements. However, if the size of the speaker is reduced, the space inside the speaker will also decrease, that is, the space for accommodating the magnet may also decrease. In the case of insufficient space, only smaller magnets can be used, but the reduction in the volume of the magnet will cause the performance of the speaker to even fail to meet the requirements of the entire machine.

[0055] In view of this, it is necessary to propose a sound unit and a sound module to solve the problem of how to improve the performance of the speaker.

[0056] See also Figures 1 to 6 In one embodiment of the present invention, the sound-generating unit 100 includes a magnetic circuit system 1 and a vibration system 2. The magnetic circuit system 1 includes a magnetic circuit unit 11. The magnetic circuit unit 11 forms a first magnetic gap 114 and a second magnetic gap 115. The magnetic circuit unit 11 includes a central magnetic circuit 111, an intermediate magnetic circuit 112 arranged on the periphery of the central magnetic circuit 111, and a side magnetic circuit 113 arranged on the periphery of the intermediate magnetic circuit 112. The intermediate magnetic circuit 112 includes a first intermediate magnetic circuit 1121 and a second intermediate magnetic circuit 1122 respectively arranged on both sides of the central magnetic circuit 111 along the second direction. The first magnetic gap 114 surrounds the first intermediate magnetic circuit 1121, and the second magnetic gap 115 surrounds the second intermediate magnetic circuit 1122. 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 a magnetic component 24, the first voice coil 22 is located in the first magnetic gap 114, the second voice coil 23 is located in the second magnetic gap 115, one side of the first voice coil 22 is connected to the diaphragm 21, the other side of the first voice coil 22 is connected to the magnetic component 24, one side of the second voice coil 23 is connected to the diaphragm 21, the other side of the second voice coil 23 is connected to the magnetic component 24, the current directions of the first voice coil 22 and the second voice coil 23 are the same, the magnetic component 24 can provide the first voice coil 22 and the second voice coil 23 with a force opposite to the direction of the restoring force of the diaphragm 21; the first voice coil 22 and / or the second voice coil 23 have a long side extending along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0057] 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.

[0058] The technical solution of the present invention drives the diaphragm 21 to vibrate by using the first voice coil 22 and the second voice coil 23 spaced apart along the second direction, and the current directions of the first voice coil 22 and the second voice coil 23 are the same, and the driving force directions generated are also the same. The diaphragm 21 is driven to vibrate by the first voice coil 22 and the second voice coil 23, and has better performance than a single voice coil speaker; and, by arranging the first voice coil 22 and the second voice coil 23 on the side away from the diaphragm 21 on the magnetic component 24, the magnetic component 24 will be affected by the static magnetic force. When the position of the magnetic component 24 is the equilibrium position, the resultant force of the static magnetic force on the magnetic component 24 is zero. At this time, if the first voice coil 22 and the second voice coil 23 vibrate upward from the equilibrium position, the magnetic component 24 moves upward with the first voice coil 22 and the second voice coil 23. At this time, the magnetic component 24 is affected by The resultant direction of the static magnetic force is upward, and the direction of the resultant static magnetic force on the magnetic component 24 is consistent with the vibration direction of the first voice coil 22 and the second voice coil 23, thereby effectively increasing the driving force of the first voice coil 22 and the second voice coil 23 on the diaphragm 21, and improving the performance of the sound-emitting unit 100; similarly, if the first voice coil 22 and the second voice coil 23 vibrate downward from the equilibrium position, the magnetic component 24 moves downward with the first voice coil 22 and the second voice coil 23. At this time, the resultant direction of the static magnetic force on the magnetic component 24 is downward, and the direction of the resultant static magnetic force on the magnetic component 24 is consistent with the vibration direction of the first voice coil 22 and the second voice coil 23, which also effectively increases the driving force of the first voice coil 22 and the second voice coil 23 on the diaphragm 21, thereby improving the performance of the sound-emitting unit 100 without affecting the thickness of the sound-emitting unit 100. 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 Fig.10 Left and right directions shown.

[0059] It should be noted that when the first voice coil 22 and the second voice coil 23 are energized, the first voice coil 22 and the second voice coil 23 perform reciprocating cutting magnetic lines of force in the first magnetic gap 114 and the second magnetic gap 115 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.

[0060] According to another embodiment of the present invention, a reinforcement portion 211 is provided on the diaphragm 21 . The reinforcement portion 211 is provided to enable the sound unit 100 to have better directivity and transient response in the reproduction of high-frequency signals.

[0061] In one embodiment, the sound unit 100 further includes a shell 3 , the vibration system 2 and the magnetic circuit system 1 are respectively disposed at two ends of the shell 3 , and the outer periphery of the diaphragm 21 is connected to the shell 3 .

[0062] See also Figure 3 , Figure 4 and Figure 7 In one embodiment, the magnetic circuit system 1 further comprises a magnetic yoke 25, which is arranged on the side of the magnetic circuit unit 11 away from the diaphragm 21, and the magnetic yoke 25 is provided with an avoidance hole corresponding to the magnetic component 24. Optionally, the magnetic yoke 25 comprises an intermediate magnetic yoke 254 and a side magnetic yoke 255, the intermediate magnetic yoke 254 and the side magnetic yoke 255 are spaced apart, the central magnetic circuit 111 and the intermediate magnetic circuit 112 are both arranged on the intermediate magnetic yoke 254 on the side away from the diaphragm 21, and the side magnetic circuit 113 is arranged on the side magnetic yoke 255 on the side away from the diaphragm 21; further, the central magnetic circuit 111 comprises a central magnet 1111 and a central magnetic plate 1112, the central magnetic plate 1112 is arranged on the side of the central magnet 1111 facing the diaphragm 21, and the two ends of the central magnetic plate 1112 along the third direction are connected to the housing 3. A central magnetic plate 1112 is connected to the shell 3 so that the central magnetic plate 1112 can support the central magnet 1111 and the central magnetic circuit 111, so that the sound unit 100 does not need to be provided with a back cover 4 or other supporting parts on the side of the magnetic yoke 25 away from the diaphragm 21 to support and fix the intermediate magnetic yoke 254 and the central magnetic circuit 111, thereby reducing the thickness of the speaker.

[0063] See also Figure 3 , Figure 7 and Fig.10 In one embodiment, the side magnetic circuit 113 includes a side magnet 1131 and a side magnetic conductive plate 1132, the side magnetic conductive plate 1132 is connected to the housing 3, and the side magnet 1131 facing the diaphragm 21 is provided with a first connection area and a second connection area, the first connection area is connected to the central magnetic conductive plate 1112, and the second connection area is connected to the side magnetic conductive plate 1132. The side magnetic conductive plate and the central magnetic conductive plate are connected to the housing, and the first connection area of ​​the side magnet is connected to the central magnetic conductive plate 1112, so that the connection and fixation between the components of the magnetic circuit system 1 and the housing 3 are achieved.

[0064] According to one embodiment of the present invention, the first connection area and the second connection area are spaced apart; the side magnet 1131 includes a first magnet block 11311, a second magnet block 11312, a third magnet block 11313 and a fourth magnet block 11314 which are spaced apart in sequence along the circumferential direction of the central magnetic circuit 111, the first magnet block 11311 and the third magnet block 11313 are located in the third direction, the second magnet block 11312 and the fourth magnet block 11314 are located in the second direction, the first magnet block 11311 and the third magnet block 11313 are provided with a first connection area on the side facing the diaphragm 21, and the second magnet block 11312 and the fourth magnet block 11314 are provided with a second connection area on the side facing the diaphragm 21, so that the central magnetic conductive plate 1112 can provide reliable support for the first magnet block 11311 and the third magnet block 11313.

[0065] According to another embodiment of the present invention, the side magnetic conductive plate 1132 is injection molded on the shell 3 ; by injection molding the side magnetic conductive plate 1132 on the shell 3 , the side magnetic conductive plate 1132 can provide support for the second magnet block 11312 and the fourth magnet block 11314 .

[0066] See also Figures 10 to 12 According to another embodiment of the present invention, both ends of the central magnetic conductive plate 1112 are injection molded on the shell 3, thereby facilitating the assembly of the sound unit 100.

[0067] In one embodiment, the first intermediate magnetic circuit 1121 includes a first intermediate magnet 11211 and a first intermediate magnetic conductive plate 11212, the second intermediate magnetic circuit 1122 includes a second intermediate magnet 11221 and a second intermediate magnetic conductive plate 11222, the side magnetic circuit 113 includes a side magnet 1131 and a side magnetic conductive plate 1132, the first intermediate magnetic conductive plate 11212 is disposed on the side of the first intermediate magnet 11211 facing the diaphragm 21, and the second intermediate magnetic conductive plate 11222 is disposed on the side of the second intermediate magnet 11221. 1221 is disposed on the side of the diaphragm 21, the side magnetic conductive plate 1132 is disposed on the side of the side magnet 1131 that is disposed on the side of the diaphragm 21, the center magnet 1111, the first intermediate magnet 11211, the second intermediate magnet 11221 and the side magnet 1131 are all magnetized along the first direction, the magnetization direction of the center magnet 1111 is the same as the magnetization direction of the side magnet 1131, and the magnetization directions of the first intermediate magnet 11211 and the second intermediate magnet 11221 are opposite to the magnetization direction of the center magnet 1111. Among them, the magnetization direction of the center magnet 1111 is the same as the magnetization direction of the side magnet 1131, and the magnetization directions of the first intermediate magnet 11211 and the second intermediate magnet 11221 are opposite to the magnetization direction of the center magnet 1111, so that the first voice coil 22 and the second voice coil 23 have the same vibration direction when the current direction is the same, thereby ensuring the performance of the sound unit 100.

[0068] See also Figure 3 , Figure 4 and Figure 7 In one embodiment, the magnetic circuit system 1 further includes a magnetic yoke 25, which is disposed on the side of the magnetic circuit unit 11 away from the diaphragm 21, and the magnetic yoke 25 is provided with an escape hole corresponding to the magnetic component 24. By providing the escape hole, on the one hand, the lower vibration space of the magnetic component 24 can be increased, which helps to improve the performance of the sound unit 100; on the other hand, the size of the static magnetic force on the magnetic component 24 can be changed by adjusting the size of the escape hole, so that the size of the static magnetic force on the magnetic component 24 can be adjusted.

[0069] In one embodiment, the magnetic assembly 24 includes a first magnetic member 241 and a second magnetic member 242, the first magnetic member 241 is connected to the first voice coil 22, the second magnetic member 242 is connected to the second voice coil 23, and the avoidance hole includes a first avoidance hole 251 and a second avoidance hole 252, the first avoidance hole 251 avoids the first magnetic member 241, and the second avoidance hole 252 avoids the second magnetic member 242. The size of the static magnetic force on the first magnetic member 241 can be changed by adjusting the size of the first avoidance hole 251, so that the size of the static magnetic force on the first magnetic member 241 can be adjusted; the size of the static magnetic force on the second magnetic member 242 can be changed by adjusting the size of the second avoidance hole 252, so that the size of the static magnetic force on the second magnetic member 242 can be adjusted.

[0070] It should be noted that the first magnetic component 241 and the second magnetic component 242 can be made of permanent magnetic materials, such as ferrite, precious metal alloy, etc.; the first magnetic component 241 and the second magnetic component 242 can also be made of magnetic conductive materials; the first magnetic component 241 and the second magnetic component 242 can also be made of soft magnetic materials, such as pure iron, nickel, etc.

[0071] See also Figure 7 , Fig. 9 and Fig.12 According to one embodiment of the present invention, the magnetic yoke 25 includes an intermediate magnetic yoke 254 and a side magnetic yoke 255, the intermediate magnetic yoke 254 is spaced from the side magnetic yoke 255, the central magnetic circuit 111 and the intermediate magnetic circuit 112 are both arranged on the intermediate magnetic yoke 254 on the side away from the diaphragm 21, and the side magnetic circuit 113 is arranged on the side magnetic yoke 255 on the side away from the diaphragm 21; a first avoidance hole 251 and a second avoidance hole 252 are arranged between the intermediate magnetic yoke 254 and the side magnetic yoke 255; wherein the side magnetic yoke 255 surrounds the periphery of the intermediate magnetic yoke 254 and is spaced from the intermediate magnetic yoke 254, and the first avoidance hole 251 and the second avoidance hole 252 are arranged between the intermediate magnetic yoke 254 and the side magnetic yoke 255, so that the gap between the side magnetic yoke 255 and the intermediate magnetic yoke 254 can avoid the first magnetic member 241 and the second magnetic member 242 at the same time.

[0072] According to another embodiment of the present invention, the magnetic yoke 25 includes an intermediate magnetic yoke 254 and a side magnetic yoke 255, the intermediate magnetic yoke 254 and the side magnetic yoke 255 are spaced apart, the center magnetic circuit 111 and the intermediate magnetic circuit 112 are both arranged on the side away from the diaphragm 21 on the intermediate magnetic yoke 254, and the side of the side magnetic circuit 113 away from the diaphragm 21 is arranged on the side magnetic yoke 255; the intermediate magnetic yoke 254 is provided with a first avoidance hole 251 and a second avoidance hole 252; wherein the first magnetic component 241 and the second magnetic component 242 are located above the intermediate magnetic yoke 254, and the first magnetic component 241 and the second magnetic component 242 can be avoided respectively by opening the first avoidance hole 251 and the second avoidance hole 252 on the intermediate magnetic yoke 254.

[0073] According to another embodiment of the present invention, a first avoidance hole 251 and a second avoidance hole 252 are provided between the middle magnetic conductive yoke 254 and the side magnetic conductive yoke 255 and on the middle magnetic conductive yoke 254 . It can be that a first avoidance hole 251 is formed between the middle magnetic yoke 254 and the side magnetic yoke 255, and a second avoidance hole 252 is formed on the middle magnetic yoke 254. It can also be that a second avoidance hole 252 is formed between the middle magnetic yoke 254 and the side magnetic yoke 255, and a first avoidance hole 251 is formed on the middle magnetic yoke 254. It can also be that the number of the first avoidance holes 251 is two or more, and the first avoidance holes 251 are arranged both between the side magnetic yoke 255 and the middle magnetic yoke 254 and on the middle magnetic yoke 254, and the number of the second avoidance holes 252 is two or more, and the second avoidance holes 252 are arranged both between the side magnetic yoke 255 and the middle magnetic yoke 254 and on the middle magnetic yoke 254, so that the first avoidance holes 251 can avoid the first magnetic parts 241 located at different positions and different numbers, and the second avoidance holes 252 can avoid the second magnetic parts 242 located at different positions and different numbers.

[0074] According to one embodiment of the present invention, the first magnetic component 241 is annular, and the first avoidance hole 251 is annular. The first magnetic component 241 is annular, which can increase the driving force of the first magnetic component 241 on the diaphragm 21 through the first voice coil 22, thereby improving the performance of the sound unit 100. The first avoidance hole 251 is annular, which avoids the first magnetic component 241 from interfering with the magnetic yoke 25.

[0075] According to another embodiment of the present invention, the second magnetic member 242 is annular, and the second avoidance hole 252 is annular. The driving force of the second magnetic member 242 acting on the diaphragm 21 through the second voice coil 23 can be increased, thereby improving the performance of the sound unit 100. The second avoidance hole 252 is annular to avoid interference between the second magnetic member 242 and the magnetic yoke 25.

[0076] According to one embodiment of the present invention, there are multiple first magnetic parts 241, and the multiple first magnetic parts 241 are arranged at intervals along the circumference of the first voice coil 22. The first avoidance holes 251 are consistent with the number of the first magnetic parts 241 and are arranged one-to-one. By setting up multiple first magnetic parts 241, the driving force of the first magnetic part 241 on the diaphragm 21 through the first voice coil 22 can be increased, thereby improving the performance of the sound unit 100. The first avoidance holes 251 are arranged one-to-one with the first magnetic parts 241, thereby ensuring that the first magnetic part 241 has sufficient downward vibration space to avoid interference between the first magnetic part 241 and the magnetic yoke 25.

[0077] According to another embodiment of the present invention, there are multiple second magnetic members 242, and the multiple second magnetic members 242 are arranged at intervals along the circumference of the second voice coil 23. The number of second avoidance holes 252 is consistent with that of the second magnetic members 242 and they are arranged in a one-to-one correspondence. By providing multiple second magnetic members 242, the driving force of the second magnetic members 242 acting on the diaphragm 21 through the second voice coil 23 can be increased, thereby improving the performance of the sound unit 100. The second avoidance holes 252 are arranged in a one-to-one correspondence with the second magnetic members 242, thereby ensuring that the second magnetic members 242 have sufficient downward vibration space to avoid interference between the second magnetic members 242 and the magnetic yoke 25.

[0078] See also Figures 4 to 6 According to an embodiment of the present invention, the sound unit 100 further includes a back cover 4, which is disposed on the side of the magnetic yoke 25 away from the diaphragm 21; the back cover 4 protrudes in a direction away from the diaphragm 21 to form an avoidance groove 42, and the avoidance groove 42 is disposed corresponding to the avoidance hole. By providing the avoidance groove 42 to avoid the magnetic component, the lower vibration space of the first voice coil 22 and the second voice coil 23 is increased, thereby improving the performance of the sound unit 100. The thickness and material of the back cover 4 can be selected according to whether it needs to support the magnetic yoke 25. If it needs to provide support force, a material with greater strength can be selected or the back cover 4 can be ensured to have a certain thickness, such as a metal material.

[0079] According to another embodiment of the present invention, the sound unit 100 further includes a back cover 4, which is disposed on the side of the magnetic yoke 25 away from the diaphragm 21; the magnetic yoke 25 is provided with a leakage hole 253, and the back cover 4 is provided with an isolation mesh 41 corresponding to and connected to the leakage hole 253. By providing the isolation mesh 41 on the back cover 4 to communicate with the leakage hole 253, the air pressure is balanced. It can be understood that the back cover 4 can cover the leakage hole 253 and the avoidance hole provided on the magnetic yoke 25 at the same time.

[0080] See also Figures 7 to 9In one embodiment, the sound unit 100 further includes an elastic support member 5, one end of which is connected to the housing 3, and the first voice coil 22 and the second voice coil 23 are both connected to the other end of the elastic support member 5. The elastic support member 5 is provided to center and support the first voice coil 22 and the second voice coil 23, thereby preventing the first voice coil 22 and the second voice coil 23 from being polarized, and improving the vibration stability of the first voice coil 22 and the second voice coil 23.

[0081] According to one embodiment of the present invention, the elastic support member 5 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 3, and the first voice coil 22 and the second voice coil 23 are both connected to the annular fixing portion; the elastic support member 5 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 5 can also facilitate wiring.

[0082] In one embodiment, the 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 512, and each first mounting portion 513 is connected to the shell The first fixing portion 511 is connected to the first voice coil 22 and the second voice coil 23; the second centering support 52 includes a second fixing portion 521, two second elastic arms 522 and two second mounting portions 523, the two second elastic arms 522 are respectively arranged at the two ends of the second fixing portion 521, the two second mounting portions 523 are respectively arranged corresponding to one second elastic arm 522, each second mounting portion 523 is connected to the housing 3, and the second fixing portion 521 is connected to the first voice coil 22 and the second voice coil 23. The first centering support 51 is arranged to center and support the first voice coil 22, thereby preventing the first voice coil 22 from polarizing and improving the vibration stability of the first voice coil 22; the second centering support 52 is arranged to center and support the second voice coil 23, thereby preventing the second voice coil 23 from polarizing and improving the vibration stability of the second voice coil 23. Compared with the use of an integral centering support, the use of two independent first centering support 51 and second centering support 52 is lower in cost. It should be noted that the first magnet block 11311 , the second magnet block 11312 , the third magnet block 11313 and the fourth magnet block 11314 are sequentially arranged at intervals to form an escape space for evading the first elastic arm portion 512 and the second elastic arm portion 522 .

[0083] In one embodiment, a pad component is provided on the first centering support 51 and the second centering support 52, and the pad component includes a first pad 531, a second pad 532, a third pad 533 and a fourth pad 534. The first pad 531 and the third pad 533 are provided on the first fixing portion 511, the second pad 532 and the fourth pad 534 are provided on the second fixing portion 521, the first pad 531 and the second pad 532 are both electrically connected to the first voice coil 22, and the third pad 533 and the fourth pad 534 are both electrically connected to the second voice coil 23. Compared with the circuit board connected to the voice coil, the sound unit 100 of this embodiment eliminates the circuit board structure by providing the first pad 531 and the third pad 533 on the first fixing portion 511, and the second pad 532 and the fourth pad 534 on the second fixing portion 521, which helps to reduce the thickness of the sound unit 100.

[0084] According to one embodiment of the present invention, a support magnetic member is provided on the centering support, wherein the support magnetic member may be made of a permanent magnetic material, such as ferrite, precious metal alloy, etc.; the support magnetic member may also be made of a magnetic conductive material; the support magnetic member may also be made of a soft magnetic material, such as pure iron, nickel, etc.; wherein the support magnetic member will be acted upon by a static magnetic force, and the static magnetic force acted upon by the support magnetic member at the equilibrium position is zero. When the first voice coil 22 and the second voice coil 23 vibrate upward from the equilibrium position, the resultant direction of the static magnetic force acted upon by the support magnetic member is also upward. This force will act on the first voice coil 22 and the second voice coil 23 through the centering support. Since the resultant direction of the static magnetic force acted upon by the support magnetic member is the same as that of the first voice coil 22, the direction of the resultant force of the static magnetic force acted upon by the support magnetic member is the same as that of the first voice coil 22. The vibration direction of the first voice coil 22 and the second voice coil 23 is 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 voice coil 23 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 centering support. 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.

[0085] According to another embodiment of the present invention, the vibration system 2 also includes a plurality of balanced diaphragms, and the plurality of balanced diaphragms are all located on the side of the side conductive magnetic yoke 255 away from the diaphragm 21. The plurality of balanced diaphragms are divided into a first balanced diaphragm group and a second balanced diaphragm group. The first balanced diaphragm group is arranged corresponding to the first voice coil 22. The first balanced diaphragm group includes a plurality of first balanced diaphragms, and the plurality of first balanced diaphragms are arranged at intervals along the circumference of the first voice coil 22. One end of some of the first balanced diaphragms is connected to the side conductive magnetic yoke 255, and the other end is connected to the first magnetic member 241 or the first voice coil 22. One end of another portion of the first diaphragms 21 is connected to the middle conductive magnetic yoke 254, and the other end is connected to the third magnetic member or the first voice coil 22. , thereby balancing the first voice coil 22; the second balanced diaphragm group is arranged corresponding to the second voice coil 23, and the second balanced diaphragm group includes a plurality of second balanced diaphragms, and the plurality of second balanced diaphragms are arranged at intervals along the circumference of the second voice coil 23, one end of some of the second balanced diaphragms is connected to the side magnetic yoke 255, and the other end is connected to the second magnetic member 242 or the second voice coil 23, one end of another part of the second diaphragm 21 is connected to the middle magnetic yoke 254, and the other end is connected to the fourth magnetic member or the second voice coil 23, thereby balancing the second voice coil 23, and the side magnetic circuit 113 is provided with connecting holes for avoiding the balanced diaphragms, and the number of the connecting holes is consistent with that of the balanced diaphragms and is arranged one-to-one.

[0086] 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.

[0087] 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 circuit unit, the magnetic circuit unit forming a first magnetic gap and a second magnetic gap, the magnetic circuit unit comprising a central magnetic circuit, an intermediate magnetic circuit arranged on a peripheral side of the central magnetic circuit, and a side magnetic circuit arranged on a peripheral side of the intermediate magnetic circuit, the intermediate magnetic circuit comprising 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; A vibration system, wherein the vibration system vibrates along a first direction, the vibration system comprises a diaphragm, a first voice coil, a second voice coil and a magnetic assembly, the first voice coil is located in the first magnetic gap, the second voice coil is located in the second magnetic gap, one side of the first voice coil is connected to the diaphragm, the other side of the first voice coil is connected to the magnetic assembly, one side of the second voice coil is connected to the diaphragm, the other side of the second voice coil is connected to the magnetic assembly, the current directions of the first voice coil and the second voice coil are the same, and the magnetic assembly can provide the first voice coil and the second voice coil with a force opposite to the direction of the diaphragm restoring force; The first voice coil and / or the second voice coil has a long side extending 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 sound unit also includes a shell, the vibration system and the magnetic circuit system are respectively arranged at two ends of the shell, the outer periphery of the diaphragm is connected to the shell, the magnetic circuit system also includes a magnetic yoke, the magnetic yoke is arranged on the side of the magnetic circuit unit away from the diaphragm, and the magnetic yoke is provided with an avoidance hole corresponding to the magnetic component.

3. The sound-emitting unit according to claim 2, characterized in that: The magnetic yoke comprises a middle magnetic yoke and a side magnetic yoke, the middle magnetic yoke is spaced from the side magnetic yoke, the central magnetic circuit and the middle magnetic circuit are both arranged on the middle magnetic yoke on one side away from the diaphragm, and the side magnetic circuit is arranged on the side magnetic yoke on the other side away from the diaphragm; The central magnetic circuit includes a central magnet and a central magnetic conductive plate. The central magnetic conductive plate is arranged on a side of the central magnet facing the diaphragm. Both ends of the central magnetic conductive plate along the third direction are connected to the shell.

4. The sound-emitting unit according to claim 3, characterized in that: The side magnetic circuit includes a side magnet and a side magnetic conductive plate, the side magnetic conductive plate is connected to the shell, and the side of the side magnet facing the diaphragm is provided with a first connection area and a second connection area, the first connection area is connected to the center magnetic conductive plate, and the second connection area is connected to the side magnetic conductive plate.

5. The sound-emitting unit according to claim 4, characterized in that: The first connection area and the second connection area are arranged at intervals; And / or, the side magnetic conductive plate is injection molded on the shell; And / or, two ends of the central magnetic conductive plate are injection molded on the shell.

6. The sound-emitting unit according to claim 1, characterized in that: 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 diaphragm, the second intermediate magnetic conductive plate is arranged on the side of the second intermediate magnet facing the diaphragm, and the side magnetic conductive plate is arranged on the side of the side magnet facing the 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, and the magnetization directions of the first intermediate magnet and the second intermediate magnet are opposite to the magnetization direction of the central magnet.

7. The sound-emitting unit according to claim 2, characterized in that: The magnetic assembly includes a first magnetic component and a second magnetic component, the first magnetic component is connected to the first voice coil, the second magnetic component is connected to the second voice coil, the avoidance hole includes a first avoidance hole and a second avoidance hole, the first avoidance hole avoids the first magnetic component, and the second avoidance hole avoids the second magnetic component.

8. The sound-emitting unit according to claim 7, characterized in that: The magnetic yoke comprises a middle magnetic yoke and a side magnetic yoke, the middle magnetic yoke is spaced from the side magnetic yoke, the central magnetic circuit and the middle magnetic circuit are both arranged on the middle magnetic yoke on one side away from the diaphragm, and the side magnetic circuit is arranged on the side magnetic yoke on the other side away from the diaphragm; The first avoidance hole and the second avoidance hole are provided between the middle magnetic conductive yoke and the side magnetic conductive yoke; Alternatively, the intermediate magnetic conductive yoke is provided with the first avoidance hole and the second avoidance hole; Alternatively, the first avoidance hole and the second avoidance hole are provided between the middle magnetic conductive yoke and the side magnetic conductive yoke and on the middle magnetic conductive yoke.

9. The sound-emitting unit according to claim 7, characterized in that: The first magnetic member is annular, and the first avoidance hole is annular; And / or, the second magnetic member is annular, and the second avoidance hole is annular.

10. The sound-emitting unit according to claim 7, characterized in that: The number of the first magnetic members is multiple, and the multiple first magnetic members are arranged at intervals along the circumference of the first voice coil, and the number of the first avoidance holes is consistent with that of the first magnetic members and are arranged in a one-to-one correspondence; And / or, there are multiple second magnetic components, the multiple second magnetic components are arranged at intervals along the circumference of the second voice coil, and the number of the second avoidance holes is consistent with that of the second magnetic components and is arranged in a one-to-one correspondence.

11. The sound-emitting unit according to claim 2, characterized in that: The sound-emitting unit further comprises a rear cover, and the rear cover is arranged on a side of the magnetic yoke away from the diaphragm; The rear cover protrudes in a direction away from the diaphragm to form an avoidance groove, and the avoidance groove is arranged corresponding to the avoidance hole; And / or, a leakage hole is arranged on the magnetic yoke, and an isolation mesh hole corresponding to and connected to the leakage hole is arranged on the back cover.

12. The sound-emitting unit according to any one of claims 2 to 5, characterized in that: The sound-emitting unit further includes an elastic support member, one end of which is connected to the shell, and the first voice coil and the second voice coil are both connected to the other end of the elastic support member.

13. The sound-emitting unit according to claim 12, characterized in that: The elastic support member includes a first centering support piece and a second centering support piece, the first centering support piece and the second centering support piece are arranged at intervals along the third direction, the first centering support piece 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 of the first mounting portions is connected to the housing, 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 shell, and the second fixing portion is connected to the first voice coil and the second voice coil.

14. The sound-emitting unit according to claim 13, characterized in that: 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 third pad are arranged on the first fixing portion, the second pad and the fourth pad are arranged on the second fixing portion, the first pad and the second pad are both electrically connected to the first voice coil, and the third pad and the fourth pad are both electrically connected to the second voice coil.

15. 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 14, wherein the sound unit is arranged in the housing.

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