Sound production monomer and sound production module

Abstract

The invention discloses a sound production monomer and a sound production module, and belongs to the technical field of sound energy conversion, the sound production monomer comprises a magnetic circuit system and a vibration system, and the magnetic circuit system forms a magnetic gap; the vibration system comprises a voice coil, a first vibrating diaphragm, a second vibrating diaphragm and a rigid connecting piece, the voice coil is arranged in the magnetic gap, the first vibrating diaphragm and the second vibrating diaphragm are arranged on the two sides of the magnetic circuit system respectively in the vibration direction of the vibration system, the first vibrating diaphragm is provided with a first reinforcing part, the voice coil is connected with the first reinforcing part, and the first reinforcing part is provided with a first magnetic piece; the first vibrating diaphragm is provided with a first reinforcing part, the second vibrating diaphragm is provided with a second reinforcing part, the second reinforcing part is provided with a second magnetic piece, the first reinforcing part and the second reinforcing part are connected through a rigid connecting piece, and the resultant force of the first magnetic piece and the second magnetic piece acting on the voice coil is opposite to the restoring force of the first vibrating diaphragm in direction, so that the driving force of the voice coil to the vibrating diaphragms can be effectively increased; and the performance of the sounding monomer is improved.

Description

Technical Field

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

[0002] 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 sound unit.

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

[0005] A magnetic circuit system, wherein the magnetic circuit system forms a magnetic gap;

[0006] A vibration system, the vibration system comprising a voice coil, a first diaphragm, a second diaphragm and a rigid connector, the voice coil being arranged in the magnetic gap, the first diaphragm and the second diaphragm being arranged on both sides of the magnetic circuit system along the vibration direction of the vibration system, the first diaphragm being provided with a first reinforcement portion, the voice coil being connected to the first reinforcement portion, the first reinforcement portion being provided with a first magnetic component, the second diaphragm being provided with a second reinforcement portion, the second reinforcement portion being provided with a second magnetic component, the first reinforcement portion and the second reinforcement portion being connected via the rigid connector, the resultant force of the first magnetic component and the second magnetic component acting on the voice coil being opposite in direction to the restoring force of the first diaphragm, the sound waves radiated outward by the first diaphragm being opposite in phase to the sound waves radiated outward by the second diaphragm.

[0007] In one embodiment, the first reinforcement portion is a magnetic component to form the first magnetic member;

[0008] Or, a magnetic component is embedded inside the first reinforcement portion to form the first magnetic member;

[0009] Or, a magnetic component is provided on at least one side of the first reinforcement portion along the vibration direction of the vibration system to form the first magnetic member;

[0010] Or, at least one side surface of the first reinforcement portion along the vibration direction of the vibration system is coated with a magnetic material to form the first magnetic member;

[0011] Alternatively, a first receiving groove for receiving the first magnetic component is formed on a side of the first reinforcement portion facing the magnetic circuit system.

[0012] In one embodiment, the second reinforcement portion is a magnetic component to form the second magnetic member;

[0013] Or, a magnetic component is embedded inside the second reinforcement portion to form the second magnetic member;

[0014] Or, the second reinforcement portion is provided with a magnetic component on at least one side along the vibration direction of the vibration system to form the second magnetic member;

[0015] Or, at least one side surface of the second reinforcement portion along the vibration direction of the vibration system is coated with a magnetic material to form the second magnetic member;

[0016] Alternatively, a second accommodating groove for accommodating the second magnetic component is formed on a side of the second reinforcement portion facing the magnetic circuit system.

[0017] In one embodiment, the magnetic circuit system is provided with an avoidance hole for the rigid connector to pass through.

[0018] In one embodiment, the magnetic circuit system includes a magnetic yoke and a central magnetic circuit and a side magnetic circuit arranged on one side of the magnetic yoke close to the first diaphragm, the side magnetic circuit surrounds the periphery of the central magnetic circuit and is spaced apart from the central magnetic circuit to form the magnetic gap, the avoidance hole includes a first avoidance hole and a second avoidance hole that are interconnected, the central magnetic circuit is provided with the first avoidance hole, and the magnetic yoke is provided with the second avoidance hole.

[0019] In one embodiment, the central magnetic circuit includes a central magnet and a central magnetic conductive plate disposed on a side of the central magnet facing the first diaphragm, the side magnetic circuit includes a side magnet and a side magnetic conductive plate disposed on a side of the side magnet facing the first diaphragm, the central magnetic conductive plate and the side magnetic conductive plate form the magnetic gap, and the first avoidance hole includes a first through hole and a second through hole that are interconnected, the first through hole is disposed on the central magnetic conductive plate, and the second through hole is disposed on the central magnet.

[0020] In one embodiment, the sound unit also includes a mesh cover, the mesh cover includes a connecting part and a connecting part connected to each other, the side of the magnetic yoke facing away from the diaphragm is arranged on the connecting part, the connecting part is provided with an isolation mesh, the magnetic yoke is provided with a leakage hole, and the isolation mesh is connected to the leakage hole.

[0021] In one embodiment, the sound unit also includes a first shell and a second shell, the first shell and the second shell are respectively arranged on both sides of the magnetic circuit system along the vibration direction of the vibration system, the first diaphragm and the magnetic circuit system are respectively arranged on both sides of the first shell along the vibration direction of the vibration system, and the outer periphery of the first diaphragm is connected to the first shell, the second diaphragm and the magnetic circuit system are respectively arranged on both sides of the second shell along the vibration direction of the vibration system, and the outer periphery of the second diaphragm is connected to the second shell.

[0022] In one embodiment, the sound unit further includes a front cover, the front cover includes a first cover body and a first dustproof net connected to each other, the first cover body is arranged on a side of the first diaphragm away from the first shell, the first cover body protrudes in a direction away from the first diaphragm to form a first groove, a first through hole is opened at the bottom of the first groove, and the first dustproof net covers the first through hole;

[0023] and / or,

[0024] The sound unit also includes a back cover, which includes a second cover body and a second dust-proof net that are connected to each other. The second cover body is arranged on the side of the second diaphragm away from the second shell. The second cover body protrudes in the direction away from the second diaphragm to form a second groove. A second through hole is opened at the bottom of the second groove, and the second dust-proof net covers the second through hole.

[0025] In one embodiment, the sound unit further includes an elastic support member, which includes a mounting portion, a fixing portion, and an elastic arm portion connecting the mounting portion and the fixing portion, the mounting portion is connected to the voice coil, and the fixing portion is connected to the first shell.

[0026] In one embodiment, the elastic support member includes a first centering support plate and a second centering support plate, the first centering support plate includes a first mounting portion, two first elastic arm portions and two first fixed portions, the two first elastic arm portions are respectively arranged at the two ends of the first mounting portion, the two first fixed portions are respectively arranged corresponding to one first elastic arm portion, the first mounting portion is connected to the first shell, and the first fixed portion is connected to the voice coil; the second centering support plate includes a second mounting portion, two second elastic arm portions and two second fixed portions, the two second elastic arm portions are respectively arranged at the two ends of the second mounting portion, the two second fixed portions are respectively arranged corresponding to one second elastic arm portion, the second mounting portion is connected to the first shell, and the second fixed portion is connected to the voice coil.

[0027] The present invention also provides a sound module, which includes a housing and the above-mentioned sound unit.

[0028] In one embodiment, the shell and the sound unit form a first sound cavity and a second sound cavity, the first sound cavity and the second sound cavity are respectively arranged on both sides of the sound unit along the vibration direction of the vibration system, the shell is provided with a first sound hole connected to the first sound cavity, and the shell is provided with a second sound hole connected to the second sound cavity.

[0029] The technical solution of the present invention is to arrange a first magnetic component on the first reinforcement part and a second magnetic component on the second reinforcement part. Both the first magnetic component and the second magnetic component will be affected by static magnetic force. When the voice coil is in a balanced position, the resultant force of the static magnetic force on the first magnetic component and the static magnetic force on the second magnetic component is zero. At this time, when the voice coil vibrates upward from the balanced position, the first magnetic component is far away from the magnetic circuit system, and the second magnetic component is close to the magnetic circuit system, so that the resultant force of the static magnetic forces on the first magnetic component and the second magnetic component is upward, and the resultant force is consistent with the vibration direction of the voice coil, thereby effectively increasing the driving force of the voice coil on the diaphragm and improving the performance of the sound unit; similarly, when the voice coil vibrates downward from the balanced position, the first magnetic component is close to the magnetic circuit system, and the second magnetic component is far away from the magnetic circuit system, so that the resultant force of the static magnetic forces on the first magnetic component and the second magnetic component is downward, and the resultant force is consistent with the vibration direction of the voice coil, thereby effectively increasing the driving force of the voice coil on the diaphragm and improving the performance of the sound unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 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.

[0031] Figure 1 A schematic structural diagram of an embodiment of a sound-emitting unit provided by the present invention;

[0032] Figure 2 A schematic structural diagram of another embodiment of a sound-emitting unit provided by the present invention;

[0033] Figure 3 A schematic diagram of the exploded structure of a part of an embodiment of a sound-emitting unit provided by the present invention;

[0034] Figure 4 A schematic diagram of the decomposed structure of an embodiment of a sound-emitting unit provided by the present invention;

[0035] Figure 5 A schematic cross-sectional structure diagram of an embodiment of a sound-emitting unit provided by the present invention;

[0036] Figure 6A schematic cross-sectional structure diagram of an embodiment of a vibration system provided by the present invention;

[0037] Figure 7 A schematic diagram of the structure of an electronic device according to an embodiment of the present invention;

[0038] Figure 8 The present invention is a schematic cross-sectional structural diagram of an electronic device according to an embodiment of the present invention.

[0039] Description of Figure Numbers:

[0040] 100, sound-generating unit; 1, magnetic circuit system; 11, center magnet; 111, center magnetic plate; 1111, first through hole; 1112, second through hole; 12, side magnet; 121, side magnetic plate; 13, magnetic yoke; 131, second avoidance hole; 132, leakage hole; 14, magnetic gap; 2, vibration system; 21, first diaphragm; 211, first reinforcement; 2111, first receiving groove; 212, first magnetic member; 22, second diaphragm; 221, second reinforcement; 2211, second receiving groove; 222, second magnetic member; 23, voice coil; 24, rigid connector; 3, mesh cover; 31. Connecting part; 32. Connecting part; 321. Isolating mesh; 41. First shell; 42. Second shell; 5. Front cover; 51. First cover; 511. First groove; 512. First through hole; 52. First dust screen; 6. Back cover; 61. Second cover; 611. Second groove; 612. Second through hole; 62. Second dust screen; 7. Elastic support; 71. First centering support piece; 711. First mounting part; 712. First elastic arm; 713. First fixing part; 72. Second centering support piece; 721. Second mounting part; 722. Second elastic arm; 723. Second fixing part;

[0041] 200, housing; 201, first acoustic cavity; 202, second acoustic cavity; 203, first acoustic hole; 204, second acoustic hole.

[0042] 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

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] See also Figure 1 , Figure 5 and Figure 6The present invention proposes a sound-emitting monomer 100, which includes a magnetic circuit system 1 and a vibration system 2. The magnetic circuit system 1 forms a magnetic gap 14; the vibration system 2 includes a voice coil 23, a first diaphragm 21, a second diaphragm 22 and a rigid connector 24. The voice coil 23 is arranged in the magnetic gap 14, the first diaphragm 21 and the second diaphragm 22 are respectively arranged on both sides of the magnetic circuit system 1 along the vibration direction of the vibration system 2, the first diaphragm 21 is provided with a first reinforcement part 211, the voice coil 23 is connected to the first reinforcement part 211, the first reinforcement part 211 is provided with a first magnetic part 212, the second diaphragm 22 is provided with a second reinforcement part 221, the second reinforcement part 221 is provided with a second magnetic part 222, the first reinforcement part 211 and the second reinforcement part 221 are connected by the rigid connector 24, and the resultant force of the first magnetic part 212 and the second magnetic part 222 acting on the voice coil 23 is opposite to the direction of the restoring force of the first diaphragm 21.

[0049] 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.

[0050] The technical solution of the present invention is to arrange the first magnetic member 212 on the first reinforcement part 211 and the second magnetic member 222 on the second reinforcement part 221. The first magnetic member 212 and the second magnetic member 222 are both affected by the static magnetic force. When the voice coil 23 is in a balanced position, the resultant force of the static magnetic force on the first magnetic member 212 and the static magnetic force on the second magnetic member 222 is zero. At this time, when the voice coil 23 vibrates upward from the balanced position, the first magnetic member 212 is away from the magnetic circuit system 1, and the second magnetic member 222 is close to the magnetic circuit system 1, so that the first magnetic member 212 and the second magnetic member 222 are both affected by the static magnetic force. The resultant force of the static magnetic force on the first magnetic component 212 is upward, and the resultant force is consistent with the vibration direction of the voice coil 23, thereby effectively increasing the driving force of the voice coil 23 on the diaphragm and improving the performance of the sound-emitting unit 100; similarly, when the voice coil 23 vibrates downward from the equilibrium position, the first magnetic component 212 is close to the magnetic circuit system 1, and the second magnetic component 222 is far away from the magnetic circuit system 1, so that the resultant force of the static magnetic force on the first magnetic component 212 and the second magnetic component 222 is downward, and the resultant force is consistent with the vibration direction of the voice coil 23, thereby effectively increasing the driving force of the voice coil 23 on the diaphragm and improving the performance of the sound-emitting unit 100. It should be noted that the first magnetic component 212 and the second magnetic component 222 can be made of permanent magnetic materials, such as ferrite, precious metal alloy, etc.; the first magnetic component 212 and the second magnetic component 222 can also be made of magnetic conductive materials; the first magnetic component 212 and the second magnetic component 222 can also be made of soft magnetic materials, such as pure iron, nickel, etc.

[0051] It should also be noted that when the voice coil 23 is energized, the voice coil 23 performs a reciprocating motion in the magnetic gap 14 to cut the magnetic lines of force, driving the diaphragm to vibrate up and down, thereby instigating the air to make sounds and completing the energy conversion between electricity and sound.

[0052] In one embodiment, the sound waves radiated outward by the first diaphragm 21 are in opposite phase to the sound waves radiated outward by the second diaphragm 22, and the dipole effect is then used to cancel out the sound at a long distance from the sound-emitting unit 100. Applying the sound-emitting unit 100 to voice calls can effectively reduce sound leakage during calls, thereby improving user privacy.

[0053] According to an embodiment of the present invention, the first reinforcing portion 211 is a magnetic component to form the first magnetic member 212 ; no additional magnetic member is required, and the structure is simple.

[0054] According to another embodiment of the present invention, a magnetic component is embedded inside the first reinforcing portion 211 to form a first magnetic member 212 . The magnetic component is embedded in the first reinforcing portion 211 , and the structure is consistent and compact.

[0055] According to another embodiment of the present invention, the first reinforcement portion 211 is provided with a magnetic component on at least one side along the vibration direction of the vibration system 2 to form a first magnetic member 212; for example, the upper surface of the first reinforcement portion 211 is provided with a magnetic component, for example, the lower surface of the first reinforcement portion 211 is provided with a magnetic component, and for example, both the upper and lower surfaces of the first reinforcement portion 211 are provided with magnetic components.

[0056] According to another embodiment of the present invention, at least one side surface of the first reinforcement portion 211 along the vibration direction of the vibration system 2 is coated with a magnetic material to form a first magnetic member 212; for example, the upper surface of the first reinforcement portion 211 is coated with a magnetic material, for example, the lower surface of the first reinforcement portion 211 is coated with a magnetic material, and for example, both the upper and lower surfaces of the first reinforcement portion 211 are coated with a magnetic material.

[0057] See also Figure 6 According to another embodiment of the present invention, a first receiving groove 2111 for receiving the first magnetic member 212 is provided on one side of the first reinforcement portion 211 facing the magnetic circuit system 1. Compared with directly setting the first magnetic member 212 on the first reinforcement portion 211, providing a receiving groove to receive the first magnetic member 212 can reduce the overall thickness.

[0058] According to an embodiment of the present invention, the second reinforcing portion 221 is a magnetic component to form the second magnetic member 222 ; no additional magnetic member is required, and the structure is simple.

[0059] According to another embodiment of the present invention, a magnetic component is embedded inside the second reinforcing portion 221 to form a second magnetic member 222 . The magnetic component is embedded in the second reinforcing portion 221 , and the structure is consistent and compact.

[0060] According to another embodiment of the present invention, the second reinforcement portion 221 is provided with a magnetic component on at least one side along the vibration direction of the vibration system 2 to form a second magnetic member 222; for example, the upper surface of the second reinforcement portion 221 is provided with a magnetic component, and for another example, the lower surface of the second reinforcement portion 221 is provided with a magnetic component, and for another example, both the upper and lower surfaces of the second reinforcement portion 221 are provided with magnetic components.

[0061] According to another embodiment of the present invention, at least one side surface of the second reinforcement portion 221 along the vibration direction of the vibration system 2 is coated with a magnetic material to form a second magnetic member 222; for example, the upper surface of the second reinforcement portion 221 is coated with a magnetic material, for example, the lower surface of the second reinforcement portion 221 is coated with a magnetic material, and for example, both the upper and lower surfaces of the second reinforcement portion 221 are coated with a magnetic material.

[0062] See also Figure 6 According to another embodiment of the present invention, a second receiving groove 2211 for receiving the second magnetic member 222 is provided on one side of the second reinforcement portion 221 facing the magnetic circuit system 1. Compared with directly setting the second magnetic member 222 on the second reinforcement portion 221, setting the receiving groove to receive the second magnetic member 222 can reduce the overall thickness.

[0063] According to one embodiment of the present invention, there are multiple first magnetic parts 212, and the multiple first magnetic parts 212 are all arranged in the first reinforcement part 211; by arranging multiple first magnetic parts 212, the driving force of the voice coil 23 on the diaphragm can be enhanced, thereby improving the performance of the sound unit 100.

[0064] According to another embodiment of the present invention, there are multiple second magnetic parts 222, and the multiple second magnetic parts 222 are all arranged on the second reinforcement part 221; by arranging multiple second magnetic parts 222, the driving force of the voice coil 23 on the diaphragm can be enhanced, thereby improving the performance of the sound unit 100.

[0065] See also Figures 3 to 5 In one embodiment, the magnetic circuit system 1 is provided with an escape hole for the rigid connector 24 to pass through. The escape hole for the rigid connector 24 to pass through is provided to make the structure of the sound unit 100 more compact, which conforms to the development trend of the sound unit 100 to be thinner and lighter.

[0066] In one embodiment, the magnetic circuit system 1 is provided with an avoidance hole for the rigid connector 24 to pass through. In one embodiment, the magnetic circuit system 1 includes a magnetic yoke 13 and a central magnetic circuit and a side magnetic circuit provided on one side of the magnetic yoke 13 close to the first diaphragm 21, the side magnetic circuit surrounds the periphery of the central magnetic circuit and is spaced apart from the central magnetic circuit to form a magnetic gap 14, the avoidance hole includes a first avoidance hole and a second avoidance hole 131 that are interconnected, the central magnetic circuit 111 is provided with a first avoidance hole, and the magnetic yoke 13 is provided with a second avoidance hole 131. By providing the first avoidance hole and the second avoidance hole 131 to avoid the rigid connector 24, the overall structure of the sound unit 100 is made more compact.

[0067] It should be noted that the central magnet 11 and the side magnets 12 are magnetized along the vibration direction of the vibration system 2, and the magnetization direction of the central magnet 11 is opposite to the magnetization direction of the side magnets 12. It should be noted that the shape of the first through hole 1111 is compatible with the shape of the first magnetic member 212, and the first through hole 1111 is also used to avoid the first magnetic member 212.

[0068] In one embodiment, the central magnetic circuit includes a central magnet 11 and a central magnetic plate 111 disposed on the side of the central magnet 11 facing the first diaphragm 21, the side magnetic circuit includes a side magnet 12 and a side magnetic plate 121 disposed on the side of the side magnet 12 facing the first diaphragm 21, the central magnetic plate 111 and the side magnetic plate 121 form a magnetic gap 14, the first avoidance hole also includes a first through hole 1111 and a second through hole 1112, the first through hole 1111 and the second through hole 1112 are connected, the central magnetic plate 111 is provided with a first through hole 1111, and the central magnet 11 is provided with a second through hole 1112. It should be noted that the shape of the second avoidance hole 131 is compatible with the shape of the second magnetic member 222, and the second avoidance hole 131 is also used to avoid the second magnetic member 222.

[0069] See also Figure 3 and Figure 4 In one embodiment, the sound unit 100 further includes a mesh cover 3, the mesh cover 3 includes a connecting portion 31 and a connecting portion 32 connected to each other, the side of the magnetic yoke 13 away from the diaphragm is arranged on the connecting portion 31, the connecting portion 32 is provided with an isolation mesh 321, the magnetic yoke 13 is provided with a leakage hole 132, and the isolation mesh 321 is connected to the leakage hole 132. By providing the isolation mesh 321 on the mesh cover 3 to connect with the leakage hole 132, the air pressure is balanced.

[0070] According to one embodiment of the present invention, the number of mesh covers 3 is two or more, and the mesh covers 3 are spaced apart from each other. Compared with the integrated steel mesh structure, this embodiment omits the connecting structural parts between the mesh covers 3, provides installation space for the vibration system 2 and the magnetic circuit system 1, and reduces the cost.

[0071] See also Figure 1 and Figure 2 In one embodiment, the sound unit 100 further includes a first shell 41 and a second shell 42, which are respectively arranged on both sides of the magnetic circuit system 1 along the vibration direction of the vibration system 2, and the first diaphragm 21 and the magnetic circuit system 1 are respectively arranged on both sides of the first shell 41 along the vibration direction of the vibration system 2, and the outer periphery of the first diaphragm 21 is connected to the first shell 41, and the second diaphragm 22 and the magnetic circuit system 1 are respectively arranged on both sides of the second shell 42 along the vibration direction of the vibration system 2, and the outer periphery of the second diaphragm 22 is connected to the second shell 42. The stability of the first diaphragm 21 is improved by providing the first shell 41, and the stability of the second diaphragm 22 is improved by providing the second shell 42 connected to the second diaphragm 22.

[0072] According to an embodiment of the present invention, the side magnetic conductive plate 121 is injection molded on the first shell 41 , thereby simplifying the assembly steps of the sound unit 100 .

[0073] See also Figure 1 and Figure 3 and Figure 4 According to an embodiment of the present invention, the sound unit 100 further includes a front cover 5, which includes a first cover body 51 and a first dustproof net 52 connected to each other. The first cover body 51 is arranged on the side of the first diaphragm 21 away from the first housing 41. The first cover body 51 protrudes in a direction away from the first diaphragm 21 to form a first groove 511. A first through hole 512 is provided at the bottom of the first groove 511. The first dustproof net 52 covers the first through hole 512. By providing the first dustproof net 52, foreign matter is prevented from entering the vibration system 2 from the first through hole 512 to affect the performance of the sound unit 100. The first dustproof net 52 is arranged on the side of the first cover body 51 away from the first diaphragm 21.

[0074] See also Figure 2 and Figure 3 and Figure 4 According to another embodiment of the present invention, the sound unit 100 further includes a back cover 6, which includes a second cover body 61 and a second dustproof net 62 connected to each other. The second cover body 61 is arranged on the side of the second diaphragm 22 away from the second housing 42. The second cover body 61 protrudes in a direction away from the second diaphragm 22 to form a second groove 611. A second through hole 612 is provided at the bottom of the second groove 611, and the second dustproof net 62 covers the second through hole 612. By providing the second dustproof net 62, foreign matter is prevented from entering the vibration system 2 from the second through hole 612 to affect the performance of the sound unit 100. The second dustproof net 62 is arranged on the side of the second cover body 61 away from the second diaphragm 22.

[0075] See also Figure 3 and Figure 4In one embodiment, the sound unit 100 further includes an elastic support member 7, which includes a mounting portion, a fixing portion, and an elastic arm portion connecting the mounting portion and the fixing portion, wherein the mounting portion is connected to the voice coil 23, and the fixing portion is connected to the first housing 41. The elastic support member 7 plays a centering and supporting role for the voice coil 23, prevents the voice coil 23 from polarizing, and improves the vibration stability of the voice coil 23.

[0076] According to an embodiment of the present invention, the elastic support member 7 includes a first centering support piece 71 and a second centering support piece 72. The first centering support piece 71 includes a first mounting portion 711, two first elastic arm portions 712 and two first fixing portions 713. The two first elastic arm portions 712 are respectively arranged at both ends of the first mounting portion 711. The two first fixing portions 713 are respectively arranged corresponding to one first elastic arm portion 712. The first mounting portion 711 is connected to the first shell 41, and the first fixing portion 713 is connected to the voice coil 23. The second centering support piece 72 includes a second mounting portion 721, two first elastic arm portions 712 and two first fixing portions 713. The second elastic arm portion 722 and the second fixing portions 723 are respectively arranged at the two ends of the second mounting portion 721, and the two second fixing portions 723 are respectively arranged corresponding to the second elastic arm portion 722. The second mounting portion 721 is connected to the first shell 41, and the second fixing portion 723 is connected to the voice coil 23. Compared with the use of an integral structure of the centering support plate, the use of the first centering support plate 71 and the second centering support plate 72 has a lower cost because the connection structure between the first centering support plate 71 and the second centering support plate 72 is omitted.

[0077] According to an embodiment of the present invention, the elastic support member 7 is provided with a support piece magnetic member, wherein the support piece magnetic member may be a member made of a permanent magnetic material, such as ferrite, precious metal alloy, etc.; the support piece magnetic member may also be a member made of a magnetic conductive material; the support piece magnetic member may also be a member made of a soft magnetic material, such as pure iron, nickel, etc.; wherein the support piece magnetic member will be acted upon by a static magnetic force, and the resultant force of the static magnetic force on the support piece magnetic member when it is in a balanced position is zero, and when the first voice coil 23 and the second voice coil 23 vibrate upward from the balanced position, the direction of the resultant force of the static magnetic force on the support piece magnetic member is also upward, and the force will act on the first voice coil 23 and the second voice coil 23 through the elastic support member 7, and since the direction of the resultant force of the static magnetic force on the support piece magnetic member is the same as that of the first voice coil 23 and the second voice coil 23, the direction of the resultant force of the static magnetic force on the support piece magnetic member is the same as that of the first voice coil 23 and the second voice coil 23. The vibration directions of the first voice coil 23 and the second voice coil 23 are consistent, thereby effectively increasing the driving force of the first voice coil 23 and the second voice coil 23 on the diaphragm, thereby effectively improving the sensitivity of the sound-emitting unit 100; similarly, when the first voice coil 23 and the second voice coil 23 vibrate downward from the equilibrium position, the direction of the resultant force of the static magnetic force on the support magnetic part is also downward, and this force will act on the first voice coil 23 and the second voice coil 23 through the elastic support part 7. Since the direction of the resultant force of the static magnetic force on the support magnetic part is consistent with the vibration direction of the first voice coil 23 and the second voice coil 23, the driving force of the first voice coil 23 and the second voice coil 23 on the diaphragm is effectively increased, thereby effectively improving the sensitivity of the sound-emitting unit 100.

[0078] In one embodiment, the elastic support member 7 is provided with a pad component, and the voice coil 23 is electrically connected to the pad component. Compared with providing a circuit board connected to the voice coil 23, in this embodiment, the pad component on the elastic support member 7 is directly electrically connected to the lead of the voice coil 23, thereby eliminating the circuit board structure, which helps to reduce the thickness of the sound unit 100.

[0079] According to one embodiment of the present invention, the voice coil 23 includes a plurality of annular voice coils 23 nested in sequence, any two adjacent annular voice coils 23 are connected to each other, and the plurality of annular voice coils 23 are arranged in sequence along a first direction; thereby effectively improving the strength of the first reinforcement portion 211 and avoiding high-frequency harmonics of the first reinforcement portion 211.

[0080] See also Figure 1 , Figure 7 and Figure 8 The present invention also provides a sound module, which includes a housing 200 and the above-mentioned sound unit 100, the sound unit 100 is arranged in the housing 200, and the sound module can be a speaker module or an electronic device such as a computer, a mobile phone, and a smart wearable device. 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.

[0081] In one embodiment, the housing 200 and the sound-emitting unit 100 enclose a first sound cavity 201 and a second sound cavity 202, the first sound cavity 201 and the second sound cavity 202 are respectively arranged on both sides of the sound-emitting unit 100 along the vibration direction of the vibration system 2, the housing 200 is provided with a first sound hole 203 connected to the first sound cavity 201, the housing 200 is provided with a second sound hole 204 connected to the second sound cavity 202, the first diaphragm 21 is arranged corresponding to the first sound cavity 201, and the second diaphragm 22 is arranged corresponding to the second sound cavity 202, the sound waves generated by the first diaphragm 21 can be sequentially transmitted to the outside through the first sound cavity 201 and the first sound hole 203, and the sound waves generated by the second diaphragm 22 can be sequentially transmitted to the outside through the second sound cavity 202 and the second sound hole 204, that is, the first sound hole 203 and the second sound hole 204 can both be used for answering. It should be noted that the electronic device can be a computer, a mobile phone, and a smart wearable device.

[0082] The above are only exemplary embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A sound-emitting unit, characterized in that: include: A magnetic circuit system, wherein the magnetic circuit system forms a magnetic gap; A vibration system, the vibration system comprising a voice coil, a first diaphragm, a second diaphragm and a rigid connector, the voice coil being arranged in the magnetic gap, the first diaphragm and the second diaphragm being arranged on both sides of the magnetic circuit system along the vibration direction of the vibration system, the first diaphragm being provided with a first reinforcement portion, the voice coil being connected to the first reinforcement portion, the first reinforcement portion being provided with a first magnetic component, the second diaphragm being provided with a second reinforcement portion, the second reinforcement portion being provided with a second magnetic component, the first reinforcement portion and the second reinforcement portion being connected via the rigid connector, the resultant force of the first magnetic component and the second magnetic component acting on the voice coil being opposite in direction to the restoring force of the first diaphragm, the sound waves radiated outward by the first diaphragm being opposite in phase to the sound waves radiated outward by the second diaphragm.

2. The sound-emitting unit according to claim 1, characterized in that: The first reinforcing portion is a magnetic component to form the first magnetic member; Or, a magnetic component is embedded inside the first reinforcement portion to form the first magnetic member; Or, a magnetic component is provided on at least one side of the first reinforcement portion along the vibration direction of the vibration system to form the first magnetic member; Or, at least one side surface of the first reinforcement portion along the vibration direction of the vibration system is coated with a magnetic material to form the first magnetic member; Alternatively, a first receiving groove for receiving the first magnetic component is formed on a side of the first reinforcement portion facing the magnetic circuit system.

3. The sound-emitting unit according to claim 1, characterized in that: The second reinforcement portion is a magnetic component to form the second magnetic member; Or, a magnetic component is embedded inside the second reinforcement portion to form the second magnetic member; Or, the second reinforcement portion is provided with a magnetic component on at least one side along the vibration direction of the vibration system to form the second magnetic member; Or, at least one side surface of the second reinforcement portion along the vibration direction of the vibration system is coated with a magnetic material to form the second magnetic member; Alternatively, a second accommodating groove for accommodating the second magnetic component is formed on a side of the second reinforcement portion facing the magnetic circuit system.

4. The sound-emitting unit according to claim 1, characterized in that: The magnetic circuit system is provided with an avoidance hole for the rigid connecting member to pass through.

5. The sound-emitting unit according to claim 4, characterized in that: The magnetic circuit system includes a magnetic yoke and a central magnetic circuit and a side magnetic circuit arranged on one side of the magnetic yoke close to the first diaphragm, the side magnetic circuit surrounds the periphery of the central magnetic circuit and is spaced apart from the central magnetic circuit to form the magnetic gap, the avoidance hole includes a first avoidance hole and a second avoidance hole that are interconnected, the central magnetic circuit is provided with the first avoidance hole, and the magnetic yoke is provided with the second avoidance hole.

6. The sound-emitting unit according to claim 5, characterized in that: The central magnetic circuit includes a central magnet and a central magnetic conductive plate disposed on a side of the central magnet facing the first diaphragm, the side magnetic circuit includes a side magnet and a side magnetic conductive plate disposed on a side of the side magnet facing the first diaphragm, the central magnetic conductive plate and the side magnetic conductive plate form the magnetic gap, the first avoidance hole includes a first through hole and a second through hole connected to each other, the first through hole is disposed on the central magnetic conductive plate, and the second through hole is disposed on the central magnet.

7. The sound-emitting unit according to claim 5, characterized in that: The sound unit also includes a mesh cover, which includes a connecting part and a connecting part that are connected to each other. The side of the magnetic yoke facing away from the diaphragm is arranged on the connecting part, the connecting part is provided with an isolation mesh, the magnetic yoke is provided with a leakage hole, and the isolation mesh is connected to the leakage hole.

8. The sound-emitting unit according to any one of claims 1 to 7, characterized in that: The sound unit also includes a first shell and a second shell. The first shell and the second shell are respectively arranged on both sides of the magnetic circuit system along the vibration direction of the vibration system. The first diaphragm and the magnetic circuit system are respectively arranged on both sides of the first shell along the vibration direction of the vibration system, and the outer periphery of the first diaphragm is connected to the first shell. The second diaphragm and the magnetic circuit system are respectively arranged on both sides of the second shell along the vibration direction of the vibration system, and the outer periphery of the second diaphragm is connected to the second shell.

9. The sound-emitting unit according to claim 8, characterized in that: The sound-emitting unit further includes a front cover, the front cover including a first cover body and a first dust-proof net connected to each other, the first cover body is arranged on a side of the first diaphragm away from the first shell, the first cover body protrudes in a direction away from the first diaphragm to form a first groove, a first through hole is formed at the bottom of the first groove, and the first dust-proof net covers the first through hole; and / or, The sound unit also includes a back cover, which includes a second cover body and a second dust-proof net that are connected to each other. The second cover body is arranged on the side of the second diaphragm away from the second shell. The second cover body protrudes in the direction away from the second diaphragm to form a second groove. A second through hole is opened at the bottom of the second groove, and the second dust-proof net covers the second through hole.

10. The sound-emitting unit according to claim 8, characterized in that: The sound-emitting unit further includes an elastic support member, one end of which is connected to the first shell, and the other end of which is connected to the voice coil.

11. The sound-emitting unit according to claim 10, characterized in that: The elastic support member includes a first centering support plate and a second centering support plate, the first centering support plate includes a first mounting portion, two first elastic arm portions and two first fixing portions, the two first elastic arm portions are respectively arranged at two ends of the first mounting portion, the two first fixing portions are respectively arranged corresponding to one first elastic arm portion, the first mounting portion is connected to the first housing, and the first fixing portion is connected to the voice coil; The second centering support plate includes a second mounting portion, two second elastic arm portions and two second fixing portions, the two second elastic arm portions are respectively arranged at two ends of the second mounting portion, the two second fixing portions are respectively arranged corresponding to one second elastic arm portion, the second mounting portion is connected to the first shell, and the second fixing portion is connected to the voice coil.

12. 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 11.

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

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