Sound production monomer and sound production module

Abstract

The application 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. The magnetic circuit system forms a magnetic gap. The vibration system comprises a voice coil, a first diaphragm, a second diaphragm and a rigid connecting piece. The voice coil is arranged in the magnetic gap. The first diaphragm and the second diaphragm are respectively arranged on the two sides of the magnetic circuit system along the vibration direction of the vibration system. The first diaphragm is provided with a first reinforcing part. The voice coil is connected with the first reinforcing part. The first reinforcing part is provided with a first magnetic part. The second diaphragm is provided with a second reinforcing part. The second reinforcing part is provided with a second magnetic part. The first reinforcing part and the second reinforcing part are connected through the rigid connecting piece. The resultant force of the first magnetic part and the second magnetic part acting on the voice coil is opposite to the restoring force direction of the first diaphragm. Therefore, the driving force of the voice coil on the diaphragm can be effectively increased, and the performance of the sound production monomer is improved.

Description

Technical Field

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

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

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

[0004] To achieve the above objectives, the present invention provides a sound-generating unit comprising:

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

[0006] A vibration system includes a voice coil, a first diaphragm, a second diaphragm, and a rigid connector. The voice coil is disposed in the magnetic gap. The first diaphragm and the second diaphragm are respectively disposed on both sides of the magnetic circuit system along the vibration direction of the vibration system. The first diaphragm is provided with a first reinforcing part, and the voice coil is connected to the first reinforcing part. The first reinforcing part is provided with a first magnetic element. The second diaphragm is provided with a second reinforcing part, and the second reinforcing part is provided with a second magnetic element. The first reinforcing part and the second reinforcing part are connected by the rigid connector. The resultant force of the first magnetic element and the second magnetic element acting on the voice coil is opposite to the direction of the restoring force of the first diaphragm. The sound waves radiated outward by the first diaphragm are out of phase with the sound waves radiated outward by the second diaphragm.

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

[0008] Alternatively, a magnetic component may be embedded inside the first reinforcing part to form the first magnetic component;

[0009] Alternatively, the first reinforcing part may be provided with a magnetic component on at least one side along the vibration direction of the vibration system to form the first magnetic component;

[0010] Alternatively, at least one side of the surface of the first reinforcing part along the vibration direction of the vibration system is coated with a magnetic material to form the first magnetic element;

[0011] Alternatively, the first reinforcing part may have a first receiving groove on the side facing the magnetic circuit system for accommodating the first magnetic component.

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

[0013] Alternatively, a magnetic component may be embedded inside the second reinforcing part to form the second magnetic element;

[0014] Alternatively, the second reinforcing part may be provided with a magnetic component on at least one side along the vibration direction of the vibration system to form the second magnetic component;

[0015] Alternatively, at least one side surface of the second reinforcing part along the vibration direction of the vibration system is coated with a magnetic material to form the second magnetic element;

[0016] Alternatively, the second reinforcing part may have a second receiving groove on the side facing the magnetic circuit system for accommodating the second magnetic component.

[0017] In one embodiment, the magnetic circuit system has a clearance hole through which the rigid connector passes.

[0018] In one embodiment, the magnetic circuit system includes a magnetic yoke and a central magnetic circuit and a side magnetic circuit disposed on the side of the magnetic yoke near 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 clearance hole includes a first clearance hole and a second clearance hole that are interconnected. The central magnetic circuit has the first clearance hole, and the magnetic yoke has the second clearance hole.

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

[0020] In one embodiment, the sound-generating unit further includes a mesh cover, the mesh cover including a connecting portion and a communicating portion connected to each other, the side of the magnetic yoke opposite to the diaphragm is disposed on the connecting portion, the communicating portion is provided with an isolation mesh hole, the magnetic yoke is provided with a leakage hole, and the isolation mesh hole communicates with the leakage hole.

[0021] In one embodiment, the sound-generating unit further includes a first housing and a second housing. The first housing and the second housing are respectively disposed 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 disposed on both sides of the first housing along the vibration direction of the vibration system, and the outer periphery of the first diaphragm is connected to the first housing. The second diaphragm and the magnetic circuit system are respectively disposed on both sides of the second housing along the vibration direction of the vibration system, and the outer periphery of the second diaphragm is connected to the second housing.

[0022] In one embodiment, the sound-generating unit further includes a front cover, the front cover including a first cover body and a first dustproof net connected to each other, the first cover body being disposed on the side of the first diaphragm away from the first housing, the first cover body protruding in a direction away from the first diaphragm to form a first groove, the bottom of the first groove having a first through hole, and the first dustproof net covering the first through hole.

[0023] And / or,

[0024] The sound-generating unit also includes a back cover, which includes a second cover body and a second dustproof net connected to each other. The second cover body is disposed on the side of the second diaphragm away from the second housing. The second cover body protrudes in a direction away from the second diaphragm to form a second groove. A second through hole is provided at the bottom of the second groove. The second dustproof net covers the second through hole.

[0025] In one embodiment, the sound-generating unit further includes an elastic support member, which includes a mounting portion, a fixing portion, and a spring 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 housing.

[0026] In one embodiment, the elastic support includes a first centering support and a second centering support. The first centering support includes a first mounting portion, two first spring arms, and two first fixing portions. The two first spring arms are respectively disposed at both ends of the first mounting portion, and the two first fixing portions are respectively disposed corresponding to one of the first spring arms. The first mounting portion is connected to the first housing, and the first fixing portions are connected to the voice coil. The second centering support includes a second mounting portion, two second spring arms, and two second fixing portions. The two second spring arms are respectively disposed at both ends of the second mounting portion, and the two second fixing portions are respectively disposed corresponding to one of the second spring arms. The second mounting portion is connected to the first housing, and the second fixing portions are connected to the voice coil.

[0027] The present invention also proposes a sound-generating module, which includes a housing and the aforementioned sound-generating unit.

[0028] In one embodiment, the outer shell and the sound-generating unit form a first acoustic cavity and a second acoustic cavity. The first acoustic cavity and the second acoustic cavity are respectively disposed on both sides of the sound-generating unit along the vibration direction of the vibration system. The outer shell has a first acoustic hole communicating with the first acoustic cavity and a second acoustic hole communicating with the second acoustic cavity.

[0029] The technical solution of this invention involves providing a first magnetic element on the first reinforcing part and a second magnetic element on the second reinforcing part. Both the first and second magnetic elements are subjected to static magnetic forces. When the voice coil is in the equilibrium position, the resultant force of the static magnetic forces on the first and second magnetic elements is zero. At this time, when the voice coil vibrates upward from the equilibrium position, the first magnetic element moves away from the magnetic circuit system, while the second magnetic element moves closer to the magnetic circuit system. This results in the resultant force of the static magnetic forces on the first and second magnetic elements being upward, which is consistent with the vibration direction of the voice coil. This effectively increases the driving force of the voice coil on the diaphragm and improves the performance of the sound-producing unit. Similarly, when the voice coil vibrates downward from the equilibrium position, the first magnetic element moves closer to the magnetic circuit system, while the second magnetic element moves away from the magnetic circuit system. This results in the resultant force of the static magnetic forces on the first and second magnetic elements being downward, which is consistent with the vibration direction of the voice coil. This effectively increases the driving force of the voice coil on the diaphragm and improves the performance of the sound-producing unit. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

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

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

[0033] Figure 3 An exploded view of a partial structure of a sound-generating monomer provided by the present invention;

[0034] Figure 4 An exploded structural diagram of an embodiment of the sound-generating monomer provided by the present invention;

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

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

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

[0038] Figure 8 This is a cross-sectional structural diagram of an embodiment of the electronic device provided by the present invention.

[0039] Explanation of icon numbers:

[0040] 100. Sound-generating unit; 1. Magnetic circuit system; 11. Central magnet; 111. Central magnetic guide plate; 1111. First through hole; 1112. Second through hole; 12. Side magnet; 121. Side magnetic guide plate; 13. Magnetic yoke; 131. Second clearance hole; 132. Leakage hole; 14. Magnetic gap; 2. Vibration system; 21. First diaphragm; 211. First reinforcement; 2111. First receiving groove; 212. First magnetic component; 22. Second diaphragm; 221. Second reinforcement; 2211. Second receiving groove; 222. Second magnetic component; 23. Voice coil; 24. Rigid connector; 3. Mesh cover; 31. Connecting part; 32. Communicating part; 321. Isolation mesh; 41. First housing; 42. Second housing; 5. Front cover; 51. First cover body; 511. First groove; 512. First through hole; 52. First dustproof net; 6. Rear cover; 61. Second cover body; 611. Second groove; 612. Second through hole; 62. Second dustproof net; 7. Elastic support member; 71. First centering support plate; 711. First mounting part; 712. First spring arm part; 713. First fixing part; 72. Second centering support plate; 721. Second mounting part; 722. Second spring arm part; 723. Second fixing part;

[0041] 200. Outer shell; 201. First acoustic cavity; 202. Second acoustic cavity; 203. First acoustic hole; 204. Second acoustic hole.

[0042] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort 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 positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0045] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0046] The trend towards thinner and smaller smart products presents a significant challenge to the acoustic performance of speakers due to limited internal space. Reducing the size of the speaker can weaken its performance. Traditionally, improving speaker performance involves increasing the size of the magnet, but this also increases the speaker's size, making it unsuitable for the device. Conversely, reducing the speaker's size reduces the internal space, potentially limiting the space for the magnet. This can lead to the use of smaller magnets, which in turn can result in the speaker's performance failing to meet the overall device requirements.

[0047] Therefore, it is necessary to propose a sound-generating unit and a sound-generating module, which aims to solve how to improve the performance of loudspeakers.

[0048] Please see Figure 1 , Figure 5 and Figure 6This invention proposes a sound-generating unit 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 disposed in the magnetic gap 14. The first diaphragm 21 and the second diaphragm 22 are respectively disposed 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 reinforcing part 211. The voice coil 23 is connected to the first reinforcing part 211. The first reinforcing part 211 is provided with a first magnetic element 212. The second diaphragm 22 is provided with a second reinforcing part 221. The second reinforcing part 221 is provided with a second magnetic element 222. The first reinforcing part 211 and the second reinforcing part 221 are connected by the rigid connector 24. The resultant force of the first magnetic element 212 and the second magnetic element 222 acting on the voice coil 23 is opposite to the direction of the restoring force of the first diaphragm 21.

[0049] The sound-generating unit 100 of this invention can be a loudspeaker unit, and can be used in the sound-generating module of electronic devices, such as computers, mobile phones, and smart wearable devices. This embodiment uses a loudspeaker unit as an example for illustration.

[0050] The technical solution of this invention involves providing a first magnetic element 212 on the first reinforcing part 211 and a second magnetic element 222 on the second reinforcing part 221. Both the first magnetic element 212 and the second magnetic element 222 are subjected to static magnetic forces. When the voice coil 23 is in the equilibrium position, the resultant force of the static magnetic forces on the first magnetic element 212 and the second magnetic element 222 is zero. At this time, when the voice coil 23 vibrates upward from the equilibrium position, the first magnetic element 212 moves away from the magnetic circuit system 1, and the second magnetic element 222 moves closer to the magnetic circuit system 1, so that the first magnetic element 212 and the second magnetic element 222 move closer to the magnetic circuit system 1. The resultant force of the static magnetic force on component 222 is upward, and this resultant force is consistent with the vibration direction of voice coil 23, thereby effectively increasing the driving force of voice coil 23 on diaphragm and improving the performance of the sound-generating unit 100. Similarly, when voice coil 23 vibrates downward from its equilibrium position, the first magnetic component 212 moves closer to the magnetic circuit system 1, and the second magnetic component 222 moves away from the magnetic circuit system 1. This results in the resultant force of the static magnetic force on the first magnetic component 212 and the second magnetic component 222 being downward, and this resultant force is consistent with the vibration direction of voice coil 23, thereby effectively increasing the driving force of voice coil 23 on diaphragm and improving the performance of the sound-generating unit 100. It should be noted that the first magnetic component 212 and the second magnetic component 222 can be made of permanent magnet materials, such as ferrite, noble metal alloys, etc.; the first magnetic component 212 and the second magnetic component 222 can also be made of magnetically 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 reciprocates within the magnetic gap 14, cutting the magnetic lines of force, causing the diaphragm to vibrate up and down, thereby inducing air to produce sound and completing the energy conversion between electroacoustics.

[0052] In one embodiment, the sound waves radiated outward by the first diaphragm 21 are out of phase with the sound waves radiated outward by the second diaphragm 22. By utilizing the dipole effect, the sound waves can be canceled out at a distance from the sound-emitting unit 100. When the sound-emitting unit 100 is used in voice calls, the sound leakage during the call can be effectively reduced, thereby improving the user's privacy.

[0053] According to one embodiment of the present invention, the first reinforcing part 211 is a magnetic component to form a first magnetic element 212; no additional magnetic component 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 part 211 to form a first magnetic component 212. The magnetic component is embedded in the first reinforcing part 211, resulting in a good structural consistency and compactness.

[0055] According to another embodiment of the present invention, the first reinforcing part 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 component 212; for example, the upper surface of the first reinforcing part 211 is provided with a magnetic component, or the lower surface of the first reinforcing part 211 is provided with a magnetic component, or both the upper and lower surfaces of the first reinforcing part 211 are provided with magnetic components.

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

[0057] Please see Figure 6 According to another embodiment of the present invention, the first reinforcing portion 211 has a first receiving groove 2111 for receiving the first magnetic component 212 on the side facing the magnetic circuit system 1. Compared with directly setting the first magnetic component 212 on the first reinforcing portion 211, setting the receiving groove to receive the first magnetic component 212 can reduce the overall thickness.

[0058] According to one embodiment of the present invention, the second reinforcing part 221 is a magnetic component to form a second magnetic element 222; no additional magnetic component 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 part 221 to form a second magnetic component 222. The magnetic component is embedded in the second reinforcing part 221, resulting in a good structural consistency and compactness.

[0060] According to another embodiment of the present invention, the second reinforcing part 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 component 222; for example, the upper surface of the second reinforcing part 221 is provided with a magnetic component, or the lower surface of the second reinforcing part 221 is provided with a magnetic component, or both the upper and lower surfaces of the second reinforcing part 221 are provided with magnetic components.

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

[0062] Please see Figure 6 According to another embodiment of the present invention, the second reinforcing portion 221 has a second receiving groove 2211 for receiving the second magnetic component 222 on the side facing the magnetic circuit system 1. Compared with directly setting the second magnetic component 222 on the second reinforcing portion 221, setting the receiving groove to receive the second magnetic component 222 can reduce the overall thickness.

[0063] According to one embodiment of the present invention, there are multiple first magnetic elements 212, and all of the multiple first magnetic elements 212 are disposed on the first reinforcing part 211; by disposing of multiple first magnetic elements 212, the driving force of the voice coil 23 on the diaphragm can be enhanced, thereby improving the performance of the sound-generating unit 100.

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

[0065] Please see Figures 3 to 5 In one embodiment, the magnetic circuit system 1 has a clearance hole for the rigid connector 24 to pass through. By providing a clearance hole for the rigid connector 24 to pass through, the structure of the sound-generating unit 100 is made more compact, which is in line with the development trend of making the sound-generating unit 100 thinner and lighter.

[0066] In one embodiment, the magnetic circuit system 1 has clearance holes for the rigid connector 24 to pass through. In another embodiment, the magnetic circuit system 1 includes a magnetic yoke 13 and a central magnetic circuit and a side magnetic circuit located on the side of the magnetic yoke 13 near 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 clearance holes include a first clearance hole and a second clearance hole 131 that are interconnected. The central magnetic circuit 111 has a first clearance hole, and the magnetic yoke 13 has a second clearance hole 131. By providing the first clearance hole and the second clearance hole 131 to allow clearance for the rigid connector 24, the overall structure of the sound-generating unit 100 becomes more compact.

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

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

[0069] Please see Figure 3 and Figure 4 In one embodiment, the sound-generating unit 100 further includes a mesh cover 3, which includes a connecting portion 31 and a communicating portion 32 connected to each other. A magnetic yoke 13 is disposed on the side facing away from the diaphragm at the connecting portion 31. The communicating portion 32 is provided with an isolation mesh 321, and the magnetic yoke 13 is provided with a leakage hole 132. The isolation mesh 321 communicates with the leakage hole 132. By opening the isolation mesh 321 and communicating with the leakage hole 132 on the mesh cover 3, 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 each mesh cover 3 is spaced apart from each other. Compared with the integrated steel mesh structure, this embodiment eliminates the connecting structure between the mesh covers 3, providing installation space for the vibration system 2 and the magnetic circuit system 1, and reducing costs.

[0071] Please see Figure 1 and Figure 2 In one embodiment, the sound-generating unit 100 further includes a first housing 41 and a second housing 42. The first housing 41 and the second housing 42 are respectively disposed on both sides of the magnetic circuit system 1 along the vibration direction of the vibration system 2. The first diaphragm 21 and the magnetic circuit system 1 are respectively disposed on both sides of the first housing 41 along the vibration direction of the vibration system 2, and the outer periphery of the first diaphragm 21 is connected to the first housing 41. The second diaphragm 22 and the magnetic circuit system 1 are respectively disposed on both sides of the second housing 42 along the vibration direction of the vibration system 2, and the outer periphery of the second diaphragm 22 is connected to the second housing 42. By providing the first housing 41, the stability of the first diaphragm 21 is improved. By providing the second housing 42 and connecting it to the second diaphragm 22, the stability of the second diaphragm 22 is improved.

[0072] According to one embodiment of the present invention, the side magnetic plate 121 is injection molded into the first housing 41, thereby simplifying the assembly steps of the sound-generating unit 100.

[0073] Please see Figure 1 and Figure 3 and Figure 4 According to one embodiment of the present invention, the sound-generating unit 100 further includes a front cover 5. The front cover 5 includes a first cover body 51 and a first dustproof net 52 connected to each other. The first cover body 51 is disposed 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 objects are prevented from entering the vibration system 2 through the first through hole 512 and affecting the performance of the sound-generating unit 100. The first dustproof net 52 is disposed on the side of the first cover body 51 away from the first diaphragm 21.

[0074] Please see Figure 2 and Figure 3 and Figure 4 According to another embodiment of the present invention, the sound-generating unit 100 further includes a rear cover 6. The rear cover 6 includes a second cover body 61 and a second dustproof net 62 connected to each other. The second cover body 61 is disposed 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. The second dustproof net 62 covers the second through hole 612. By providing the second dustproof net 62, foreign objects are prevented from entering the vibration system 2 through the second through hole 612 and affecting the performance of the sound-generating unit 100. The second dustproof net 62 is disposed on the side of the second cover body 61 away from the second diaphragm 22.

[0075] Please see Figure 3 and Figure 4In one embodiment, the sound-generating unit 100 further includes an elastic support member 7. The elastic support member 7 includes a mounting part, a fixing part, and a spring arm part connecting the mounting part and the fixing part. The mounting part is connected to the voice coil 23, and the fixing part is connected to the first housing 41. The elastic support member 7 plays a role in centering and supporting the voice coil 23, preventing the voice coil 23 from being polarized, and improving 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 plate 71 and a second centering support plate 72. The first centering support plate 71 includes a first mounting portion 711, two first spring arms 712, and two first fixing portions 713. The two first spring arms 712 are respectively disposed at both ends of the first mounting portion 711, and the two first fixing portions 713 are respectively disposed corresponding to one of the first spring arms 712. The first mounting portion 711 is connected to the first housing 41, and the first fixing portions 713 are connected to the voice coil 23. The second centering support plate 72 includes a second mounting portion 721, two first fixing portions 712, and two first fixing portions 713. A second spring arm portion 722 and two second fixing portions 723 are respectively disposed at both ends of the second mounting portion 721. The two second fixing portions 723 are respectively disposed corresponding to one second spring arm portion 722. The second mounting portion 721 is connected to the first housing 41, and the second fixing portions 723 are connected to the voice coil 23. Compared with a centering support with an integral structure, the use of a first centering support 71 and a second centering support 72 eliminates the connection structure between the first centering support 71 and the second centering support 72, thus reducing the cost.

[0077] According to one embodiment of the present invention, the elastic support 7 is provided with a magnetic support piece, wherein the magnetic support piece can be made of a permanent magnet material, such as ferrite, precious metal alloy, etc.; the magnetic support piece can also be made of a magnetically conductive material; the magnetic support piece can also be made of a soft magnetic material, such as pure iron, nickel, etc.; wherein, the magnetic support piece is subjected to a static magnetic force, and the resultant force of the static magnetic force on the magnetic support piece is zero when it is in the equilibrium position. When the first voice coil 23 and the second voice coil 23 vibrate upward from the equilibrium position, the direction of the resultant force of the static magnetic force on the magnetic support piece is also upward, and this force will act on the first voice coil 23 and the second voice coil 23 through the elastic support 7. Since the direction of the resultant force of the static magnetic force on the magnetic support piece is the same as that of the first voice coil 23 and the second voice coil 23, the magnetic support piece is subjected to a static magnetic force. 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, and thus effectively improving the sensitivity of the sound-generating unit 100. Similarly, when the first voice coil 23 and the second voice coil 23 vibrate downward from their equilibrium positions, the resultant force of the static magnetic force on the support magnetic component is also downward. This force will act on the first voice coil 23 and the second voice coil 23 through the elastic support component 7. Since the direction of the resultant force of the static magnetic force on the support magnetic component 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, and thus effectively improving the sensitivity of the sound-generating unit 100.

[0078] In one embodiment, the elastic support 7 is provided with a pad component, and the voice coil 23 is electrically connected to the pad component. Compared to providing a circuit board connected to the voice coil 23, this embodiment directly connects the lead wire of the voice coil 23 to the pad component on the elastic support 7, thereby eliminating the need for a circuit board and helping to reduce the thickness of the sound-generating unit 100.

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

[0080] Please see Figure 1 , Figure 7 and Figure 8 The present invention also proposes a sound-generating module, which includes a housing 200 and the aforementioned sound-generating unit 100. The sound-generating unit 100 is disposed within the housing 200. The sound-generating module can be a speaker module or an electronic device such as a computer, mobile phone, or smart wearable device. Since the sound-generating module adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0081] In one embodiment, the outer shell 200 and the sound-generating unit 100 form a first acoustic cavity 201 and a second acoustic cavity 202. The first acoustic cavity 201 and the second acoustic cavity 202 are respectively disposed on both sides of the sound-generating unit 100 along the vibration direction of the vibration system 2. The outer shell 200 has a first sound hole 203 communicating with the first acoustic cavity 201 and a second sound hole 204 communicating with the second acoustic cavity 202. A first diaphragm 21 is disposed corresponding to the first acoustic cavity 201, and a second diaphragm 22 is disposed corresponding to the second acoustic cavity 202. The sound waves generated by the first diaphragm 21 can be transmitted to the outside through the first acoustic cavity 201 and the first sound hole 203 in sequence, and the sound waves generated by the second diaphragm 22 can be transmitted to the outside through the second acoustic cavity 202 and the second sound hole 204 in sequence. That is, both the first sound hole 203 and the second sound hole 204 can be used for answering calls. It should be noted that the electronic device can be a computer, a mobile phone, or a smart wearable device, etc.

[0082] The above are merely exemplary embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A sound-emitting monomer, characterized in that, include: A magnetic circuit system, wherein the magnetic circuit system forms a magnetic gap; A vibration system includes a voice coil, a first diaphragm, a second diaphragm, and a rigid connector. The voice coil is disposed in the magnetic gap. The first diaphragm and the second diaphragm are respectively disposed on both sides of the magnetic circuit system along the vibration direction of the vibration system. The first diaphragm is provided with a first reinforcing part. The voice coil is connected to the first reinforcing part. The first reinforcing part is provided with a first magnetic element. The second diaphragm is provided with a second reinforcing part. The second reinforcing part is provided with a second magnetic element. The first reinforcing part and the second reinforcing part are connected through the rigid connector. The resultant force of the first magnetic element and the second magnetic element acting on the voice coil is opposite to the direction of the restoring force of the first diaphragm. The sound waves radiated outward by the first diaphragm are out of phase with the sound waves radiated outward by the second diaphragm. The first magnetic component and the second magnetic component are made of magnetically conductive material.

2. The sound-generating unit as described in claim 1, characterized in that, The first reinforcing part is a magnetic component to form the first magnetic element; Alternatively, a magnetic component may be embedded inside the first reinforcing part to form the first magnetic component; Alternatively, the first reinforcing part may be provided with a magnetic component on at least one side along the vibration direction of the vibration system to form the first magnetic component; Alternatively, at least one side of the surface of the first reinforcing part along the vibration direction of the vibration system is coated with a magnetic material to form the first magnetic element; Alternatively, the first reinforcing part may have a first receiving groove on the side facing the magnetic circuit system for accommodating the first magnetic component.

3. The sound-generating unit as described in claim 1, characterized in that, The second reinforcing part is a magnetic component to form the second magnetic element; Alternatively, a magnetic component may be embedded inside the second reinforcing part to form the second magnetic element; Alternatively, the second reinforcing part may be provided with a magnetic component on at least one side along the vibration direction of the vibration system to form the second magnetic component; Alternatively, at least one side surface of the second reinforcing part along the vibration direction of the vibration system is coated with a magnetic material to form the second magnetic element; Alternatively, the second reinforcing part may have a second receiving groove on the side facing the magnetic circuit system for accommodating the second magnetic component.

4. The sound-generating unit as described in claim 1, characterized in that, The magnetic circuit system has clearance holes for the rigid connector to pass through.

5. The sound-generating unit as described in claim 4, characterized in that, The magnetic circuit system includes a magnetic yoke and a central magnetic circuit and a side magnetic circuit disposed on the side of the magnetic yoke near 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 clearance hole includes a first clearance hole and a second clearance hole that are interconnected. The central magnetic circuit has the first clearance hole and the magnetic yoke has the second clearance hole.

6. The sound-generating unit as described in claim 5, characterized in that, The central magnetic circuit includes a central magnet and a central magnetic guide plate disposed on the side of the central magnet facing the first diaphragm. The side magnetic circuit includes a side magnet and a side magnetic guide plate disposed on the side of the side magnet facing the first diaphragm. The central magnetic guide plate and the side magnetic guide plate form the magnetic gap. The first clearance hole includes a first through hole and a second through hole that are interconnected. The first through hole is disposed on the central magnetic guide plate, and the second through hole is disposed on the central magnet.

7. The sound-generating unit as described in claim 5, characterized in that, The sound-generating unit also includes a mesh cover, which includes a connecting part and a communicating part that are connected to each other. The magnetic yoke is disposed on the side away from the diaphragm at the connecting part. The communicating part is provided with an isolation mesh hole, and the magnetic yoke is provided with a leakage hole. The isolation mesh hole is connected to the leakage hole.

8. The sound-generating unit as described in any one of claims 1 to 7, characterized in that, The sound-generating unit further includes a first housing and a second housing. The first housing and the second housing are respectively disposed 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 disposed on both sides of the first housing along the vibration direction of the vibration system, and the outer periphery of the first diaphragm is connected to the first housing. The second diaphragm and the magnetic circuit system are respectively disposed on both sides of the second housing along the vibration direction of the vibration system, and the outer periphery of the second diaphragm is connected to the second housing.

9. The sound-generating unit as described in claim 8, characterized in that, The sound-generating unit also includes a front cover, which includes a first cover body and a first dustproof net connected to each other. The first cover body is disposed on the side of the first diaphragm away from the first housing. The first cover body protrudes in a direction away from the first diaphragm to form a first groove. A first through hole is provided at the bottom of the first groove. The first dustproof net covers the first through hole. And / or, The sound-generating unit also includes a back cover, which includes a second cover body and a second dustproof net connected to each other. The second cover body is disposed on the side of the second diaphragm away from the second housing. The second cover body protrudes in a direction away from the second diaphragm to form a second groove. A second through hole is provided at the bottom of the second groove. The second dustproof net covers the second through hole.

10. The sound-generating unit as described in claim 8, characterized in that, The sound-generating unit also includes an elastic support member, one end of which is connected to the first housing, and the other end of which is connected to the voice coil.

11. The sound-generating unit as described in claim 10, characterized in that, The elastic support includes a first centering support plate and a second centering support plate. The first centering support plate includes a first mounting part, two first spring arms and two first fixing parts. The two first spring arms are respectively disposed at both ends of the first mounting part, and the two first fixing parts are respectively disposed corresponding to one of the first spring arms. The first mounting part is connected to the first housing, and the first fixing part is connected to the voice coil. The second centering support includes a second mounting portion, two second spring arms, and two second fixing portions. The two second spring arms are respectively disposed at both ends of the second mounting portion, and the two second fixing portions are respectively disposed corresponding to one of the second spring arms. The second mounting portion is connected to the first housing, and the second fixing portion is connected to the voice coil.

12. A sound-generating module, characterized in that, The sound-generating module includes a housing and a sound-generating unit as described in any one of claims 1 to 11.

13. The sound-generating module as described in claim 12, characterized in that, The outer shell and the sound-generating unit form a first acoustic cavity and a second acoustic cavity. The first acoustic cavity and the second acoustic cavity are respectively disposed on both sides of the sound-generating unit along the vibration direction of the vibration system. The outer shell has a first acoustic hole communicating with the first acoustic cavity and a second acoustic hole communicating with the second acoustic cavity.

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