Sound production monomer and sound production module

Abstract

The utility model discloses a sounding monomer and a sounding module, and relates to the technical field of sound energy conversion, the sounding monomer comprises a magnetic conductive yoke and a magnetic circuit unit arranged on the magnetic conductive yoke, the magnetic circuit unit comprises a central magnetic circuit and a side magnetic circuit arranged on the periphery of the central magnetic circuit, the central magnetic circuit and the side magnetic circuits are arranged at intervals and a magnetic gap is formed therebetween; the vibration system comprises a vibrating diaphragm, a voice coil and a magnetic piece arranged on the voice coil, the voice coil is located in the magnetic gap, one side of the voice coil is connected with the vibrating diaphragm, the other side of the voice coil is connected with the magnetic piece, the magnetic conductive yoke is provided with an avoiding hole used for avoiding the magnetic piece, and the magnetic gap is communicated with the avoiding hole; the magnetic piece can provide acting force opposite to the restoring force of the vibrating diaphragm for the voice coil; the driving force of the voice coil to the vibrating diaphragm is effectively increased, and the performance of the sounding monomer is improved.

Description

Technical Field

[0001] This utility model 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. Utility Model Content

[0003] The main purpose 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 loudspeakers.

[0004] To achieve the above objectives, the present invention proposes a sound-generating unit, which includes:

[0005] A magnetic circuit system, the magnetic circuit system including a magnetic yoke and a magnetic circuit unit disposed on the magnetic yoke, the magnetic circuit unit including a central magnetic circuit and a side magnetic circuit disposed around the central magnetic circuit, the central magnetic circuit and the side magnetic circuit being spaced apart and forming a magnetic gap between them;

[0006] A vibration system includes a diaphragm, a voice coil, and a magnetic component disposed on the voice coil. The voice coil is located within a magnetic gap. One side of the voice coil is connected to the diaphragm, and the other side of the voice coil is connected to the magnetic component. The magnetic yoke has a clearance hole for avoiding the magnetic component. The magnetic gap communicates with the clearance hole. The magnetic component can provide a force to the voice coil that is opposite to the direction of the restoring force of the diaphragm.

[0007] In one embodiment, there are multiple magnetic elements, which are arranged at intervals along the circumference of the voice coil, and the number of clearance holes is the same as the number of magnetic elements and they are provided in a one-to-one correspondence.

[0008] In one embodiment, the shape of the clearance hole is adapted to the shape of the magnetic element;

[0009] Alternatively, the magnetic yoke may include a central magnetic yoke and a side magnetic yoke, wherein the central magnetic yoke and the side magnetic yoke are spaced apart and the clearance hole is formed between them.

[0010] In one embodiment, the magnetic element includes an annular magnetic element, and the magnetic yoke includes a central magnetic yoke and a side magnetic yoke. The central magnetic yoke is connected to the central magnetic circuit, and the side magnetic yoke is connected to the side magnetic circuit. The central magnetic yoke and the side magnetic yoke are spaced apart and form the clearance hole between them.

[0011] In one embodiment, the magnetic component is made of a magnetically conductive material or a permanent magnet material.

[0012] In one embodiment, the sound-generating unit further includes a back cover, and the side of the magnetic yoke facing away from the diaphragm is disposed on the back cover.

[0013] In one embodiment, the rear cover protrudes in a direction away from the diaphragm to form a relief groove, the groove opening of the relief groove is disposed facing the relief hole and communicating with the relief hole, and the relief groove is used to avoid the magnetic component;

[0014] And / or, a leakage hole is provided on the magnetic yoke, and an isolation mesh hole corresponding to and communicating with the leakage hole is provided on the rear cover.

[0015] In one embodiment, the sound-generating unit further includes a housing and an elastic support member. The vibration system and the magnetic circuit system are respectively connected to the two ends of the housing. The outer periphery of the diaphragm is connected to the housing. One end of the elastic support member is connected to the housing, and the other end of the elastic support member is connected to the voice coil.

[0016] In one embodiment, the elastic support includes at least two centering plates, each of the centering plates including a fixing part, a mounting part, and a spring arm part connecting the fixing part and the mounting part. The mounting part is connected to the housing, and the fixing part is connected to the voice coil.

[0017] 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 diaphragm, and the side magnetic circuit includes a side magnet and a side magnetic guide plate disposed on the side of the side magnet facing the diaphragm. The central magnet and the side magnet are both magnetized along the vibration direction of the diaphragm but in opposite directions, and the magnetic gap is formed between the central magnetic guide plate and the side magnetic guide plate.

[0018] This utility model also proposes a sound-generating module, which includes a housing and the aforementioned sound-generating unit, wherein the sound-generating unit is disposed within the housing.

[0019] The technical solution of this utility model involves placing a magnetic component on the side of the voice coil away from the diaphragm. This magnetic component experiences a static magnetic force. When the magnetic component is in its equilibrium position, the net force of the static magnetic force is zero. If the voice coil vibrates upwards from its equilibrium position, the magnetic component moves upwards along with the voice coil. The net force of the static magnetic force on the magnetic component is upwards, and the direction of the static magnetic force is consistent with the vibration direction of the voice coil, thus effectively increasing the driving force of the voice coil on the diaphragm and improving the performance of the driver. Similarly, if the voice coil vibrates downwards from its equilibrium position, the magnetic component moves downwards along with the voice coil. The net force of the static magnetic force on the magnetic component is downwards, and the direction of the static magnetic force is consistent with the vibration direction of the voice coil, again effectively increasing the driving force of the voice coil on the diaphragm and improving the performance of the driver. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the sound-generating unit provided by this utility model;

[0022] Figure 2 A structural schematic diagram from another perspective of an embodiment of the sound-generating unit provided by this utility model;

[0023] Figure 3 A schematic diagram of another embodiment of the sound-generating unit provided by this utility model;

[0024] Figure 4 An exploded structural diagram of an embodiment of the sound-generating unit provided by this utility model;

[0025] Figure 5 A cross-sectional structural schematic diagram of an embodiment of the sound-generating unit provided by this utility model;

[0026] Figure 6 A partial structural cross-sectional schematic diagram of an embodiment of the sound-generating unit provided by this utility model;

[0027] Figure 7 This is a partial structural cross-sectional schematic diagram of another embodiment of the sound-generating unit provided by this utility model;

[0028] Figure 8 A schematic diagram of a structure in which the magnetic component provided by this utility model is disposed in a voice coil;

[0029] Figure 9 A schematic diagram of a structure in which the magnetic component provided by this utility model is disposed in a voice coil in another embodiment;

[0030] Figure 10 A schematic diagram of another embodiment of the magnetic component provided by this utility model disposed in the voice coil;

[0031] Figure 11 A schematic diagram of another embodiment of the magnetic component provided by this utility model is disposed in the voice coil.

[0032] Explanation of icon numbers:

[0033] 100. Sound-generating unit; 1. Magnetic circuit system; 11. Magnetic component; 12. Magnetic circuit unit; 121. Central magnetic circuit; 1211. Central magnet; 1212. Central magnetic guide plate; 122. Side magnetic circuit; 1221. Side magnet; 1222. Side magnetic guide plate; 13. Magnetic gap; 14. Magnetic guide yoke; 141. Central magnetic guide yoke; 142. Side magnetic guide yoke; 1421. Leakage hole; 143. Clearance hole; 2. Vibration system; 21. Diaphragm; 211. Reinforcing part; 22. Voice coil; 3. Back cover; 31. Clearance groove; 32. Isolation mesh; 4. Housing; 5. Elastic support component; 51. Centering support plate; 511. Fixing part; 512. Mounting part; 513. Spring arm part.

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0036] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators 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 indicators will also change accordingly.

[0037] Furthermore, if the embodiments of this utility model 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. Therefore, 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 utility model.

[0038] 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.

[0039] Therefore, it is necessary to propose a sound-generating unit and a sound-generating module, which aims to solve how to enhance the performance of loudspeakers.

[0040] Please see Figures 1 to 4 In one embodiment of this utility model, the sound-generating unit 100 includes a magnetic circuit system 1 and a vibration system 2. The magnetic circuit system 1 includes a magnetic yoke 14 and a magnetic circuit unit 12 disposed on the magnetic yoke 14. The magnetic circuit unit 12 includes a central magnetic circuit 121 and a side magnetic circuit 122 disposed around the central magnetic circuit 121. The central magnetic circuit 121 and the side magnetic circuit 122 are spaced apart and a magnetic gap 13 is formed between them. The vibration system 2 includes a diaphragm 21, a voice coil 22 and a magnetic element 11 disposed on the voice coil 22. The voice coil 22 is located in the magnetic gap 13. One side of the voice coil 22 is connected to the diaphragm 21, and the other side of the voice coil 22 is connected to the magnetic element 11. The magnetic yoke 14 has a clearance hole 143 for avoiding the magnetic element 11. The magnetic gap 13 communicates with the clearance hole 143. The magnetic element 11 can provide the voice coil 22 with a force opposite to the direction of the restoring force of the diaphragm 21.

[0041] 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.

[0042] Please see Figures 4 to 7 The technical solution of this utility model involves setting a magnetic element 11 on the side of the voice coil 22 away from the diaphragm 21. The magnetic element 11 is subjected to a static magnetic force. When the magnetic element 11 is in the equilibrium position, the static magnetic force on the magnetic element 11 is zero. If the voice coil 22 vibrates upward from its equilibrium position, the magnetic element 11 moves upward along with the voice coil 22. At this time, the resultant force of the static magnetic force on the magnetic element 11 is upward, and the direction of the resultant force of the static magnetic force on the magnetic element 11 is consistent with the vibration direction of the voice coil 22. This effectively increases the driving force of the voice coil 22 on the diaphragm 21 and improves the performance of the sound-producing unit 100. Similarly, if the voice coil 22 vibrates downward from its equilibrium position... At this time, the magnetic component 11 moves downward together with the voice coil 22. The resultant force of the static magnetic force on the magnetic component 11 is downward, and the direction of the resultant force of the static magnetic force on the magnetic component 11 is consistent with the vibration direction of the voice coil 22. This effectively increases the driving force of the voice coil 22 on the diaphragm 21 and improves the performance of the sound-generating unit 100. In addition, the magnetic yoke 14 has a clearance hole 143. On the one hand, it can increase the downward vibration space of the magnetic component 11, which helps to improve the performance of the sound-generating unit 100. On the other hand, the size of the clearance hole 143 can be adjusted to change the magnitude of the static magnetic force on the magnetic component 11, thus making the magnitude of the static magnetic force on the magnetic component 11 adjustable. It should be noted that the magnetic component 11 can be made of permanent magnet material, such as ferrite, precious metal alloy, etc.; the magnetic component 11 can also be made of magnetically conductive material; the magnetic component 11 can also be made of soft magnetic material, such as pure iron, nickel, etc.

[0043] It should also be noted that when the voice coil 22 is energized, the voice coil 22 reciprocates within the magnetic gap 13, cutting the magnetic lines of force, which drives the diaphragm 21 to vibrate up and down, thereby inducing air to produce sound and completing the energy conversion between electroacoustics.

[0044] Please see Figure 4 and Figure 5 According to one embodiment of the present invention, a reinforcing part 211 is provided on the diaphragm 21. By providing the reinforcing part 211, the sound-generating unit 100 has better directivity and transient response in the reproduction of high-frequency signals.

[0045] Please see Figures 8 to 11In one embodiment, there are multiple magnetic elements 11, which are arranged at intervals along the circumference of the voice coil 22. The number of clearance holes 143 is the same as the number of magnetic elements 11 and they are arranged in a one-to-one correspondence. By providing multiple magnetic elements 11, the driving force of the voice coil 22 on the diaphragm 21 is further enhanced, thereby effectively improving the performance of the sound-generating unit 100.

[0046] Please see Figure 8 and Figure 9 According to one embodiment of this utility model, the number of magnetic elements 11 is two. The two magnetic elements 11 are evenly spaced along the circumference of the voice coil 22. The two magnetic elements 11 can be spaced along a first direction or a second direction perpendicular to the first direction. This not only enhances the driving force of the voice coil 22 on the diaphragm 21 but also ensures that the force exerted by the magnetic elements 11 on the voice coil 22 is relatively balanced, thus ensuring the stability of the voice coil 22's vibration. It should be noted that the first direction is... Figure 8 The front and back directions are shown, and the second direction is... Figure 9 The left and right directions are shown.

[0047] Please see Figure 10 and Figure 11 According to another embodiment of the present invention, the number of magnetic elements 11 is four. The four magnetic elements 11 are respectively disposed at the four corners of the voice coil 22, or the four magnetic elements 11 are respectively disposed at the four sides of the voice coil 22. This not only enhances the driving force of the voice coil 22 on the diaphragm 21, but also ensures that the force exerted by the magnetic elements 11 on the voice coil 22 is relatively balanced, thus ensuring the stability of the vibration of the voice coil 22.

[0048] Please see Figure 4 and Figure 5 In one embodiment, the shape of the clearance hole 143 is adapted to the shape of the magnetic component 11. The shape of the clearance hole 143 is adapted to the shape of the magnetic component 11, thereby enabling better clearance of the magnetic component 11 and preventing interference between the magnetic component 11 and the magnetic yoke 14.

[0049] According to one embodiment of the present invention, the magnetic yoke 14 includes a central magnetic yoke 141 and a side magnetic yoke 142. The central magnetic yoke 141 and the side magnetic yoke 142 are spaced apart and a clearance hole 143 is formed between them; the magnetic component 11 is cleared to avoid interference between the magnetic component 11 and the magnetic yoke 14.

[0050] In one embodiment, the magnetic yoke 14 includes a central magnetic yoke 141 and a side magnetic yoke 142, with the central magnetic yoke 141 and the side magnetic yoke 142 forming a clearance hole 143. The clearance hole 143, formed by the side magnetic yoke 142 and the central magnetic yoke 141, can allow clearance for one or more magnetic components 11. It should be noted that the central magnetic yoke 141 and the side magnetic yoke 142 can be connected or spaced apart.

[0051] Please see Figure 4 In one embodiment, the magnetic component 11 includes an annular magnetic component, and the magnetic yoke 14 includes a central magnetic yoke 141 and a side magnetic yoke 142. The central magnetic yoke 141 is connected to the central magnetic circuit 121, and the side magnetic yoke 142 is connected to the side magnetic circuit 122. The central magnetic yoke 141 and the side magnetic yoke 142 are spaced apart and form a clearance hole 143 between them. The side magnetic yoke 142 surrounds the periphery of the central magnetic yoke 141 and is spaced apart from the central magnetic yoke 141 to form the clearance hole 143, which is used to avoid the magnetic component 11. Compared with the use of a smaller block magnetic component 11, the magnetic component 11 can provide a stronger driving force to the voice coil 22 when the thickness is consistent. Moreover, even when the static magnetic force at the same position is consistent, the thickness of the magnetic component 11 is smaller, which is more conducive to adapting to the development trend of thinner and lighter sound-generating units 100.

[0052] Please see Figure 4 and Figure 5 In one embodiment, the sound-generating unit 100 further includes a rear cover 3, and the magnetic yoke 14 is disposed on the side of the rear cover 3 away from the diaphragm 21. The central magnetic yoke 141 and the side magnetic yoke 142 are both disposed on the rear cover 3, and the magnetic circuit system 1 is fixed by the rear cover 3.

[0053] According to one embodiment of the present invention, the rear cover 3 protrudes in a direction away from the diaphragm 21 to form a relief groove 31. The groove opening of the relief groove 31 is set towards the relief hole 143 and communicates with the relief hole 143. The relief groove 31 is used to avoid the magnetic component 11. By forming an annular relief groove on the rear cover 3 to avoid the magnetic component 11, sufficient downward vibration space is provided for the magnetic component 11, which effectively improves the performance of the sound generating unit 100.

[0054] According to another embodiment of this utility model, a leakage hole 1421 is provided on the magnetic yoke 14, and an isolation mesh hole 32 corresponding to and communicating with the leakage hole 1421 is provided on the rear cover 3. By opening the isolation mesh hole 32 on the rear cover 3 and communicating with the leakage hole 1421, the air pressure is balanced.

[0055] According to one embodiment of this utility model, the vibration system 2 further includes multiple balanced diaphragms. These balanced diaphragms are all disposed on the side of the side guide yoke 142 away from the diaphragm 21. One end of each balanced diaphragm is connected to the side guide yoke 142, and the other end of each balanced diaphragm is connected to the magnetic component 11. The multiple balanced diaphragms are evenly spaced along the circumference of the magnetic component 11, thus functioning as a balanced voice coil 22. The side guide yoke 142 has through holes to avoid the balanced diaphragms, and the number of through holes corresponds to the number of balanced diaphragms. It should be noted that there are four balanced diaphragms, each corresponding to one of the four corners of the voice coil 22.

[0056] Please see Figure 4 , Figures 8 to 10 In one embodiment, the sound-generating unit 100 further includes a housing 4 and an elastic support 5. The vibration system 2 and the magnetic circuit system 1 are respectively connected to the two ends of the housing 4. The outer periphery of the diaphragm 21 is connected to the housing 4. One end of the elastic support 5 is connected to the housing 4, and the other end of the elastic support 5 is connected to the voice coil 22. The elastic support 5 plays a role in centering and supporting the voice coil 22, preventing the voice coil 22 from being polarized, and improving the vibration stability of the voice coil 22.

[0057] In one embodiment, the elastic support 5 includes at least two centering supports 51. Each centering support 51 includes a fixing part 511, a mounting part 512, and a spring arm part 513 connecting the fixing part 511 and the mounting part 512. The mounting part 512 is connected to the housing 4, and the fixing part 511 is connected to the voice coil 22. The number of centering supports 51 is four, and the four centering supports 51 are respectively disposed at the four corners of the voice coil 22. By providing four centering supports 51, the centering and supporting function of the elastic support 5 on the voice coil 22 is further enhanced.

[0058] According to another embodiment of the present invention, a magnetic component 11 is provided on the centering support plate 51. The magnetic component 11 can be made of permanent magnet material, such as ferrite, precious metal alloy, etc.; the magnetic component 11 can also be made of magnetically conductive material; the magnetic component 11 can also be made of soft magnetic material, such as pure iron, nickel, etc. The magnetic component 11 is subjected to static magnetic force, thereby effectively improving the sensitivity of the sound generating unit 100.

[0059] In one embodiment, the sound-generating unit 100 further includes a first pad and a second pad, which are respectively disposed on different fixing portions 511. The voice coil 22 is electrically connected to the first pad and the second pad. Compared to providing a circuit board connected to the voice coil 22, the sound-generating unit 100 of this embodiment eliminates the need for a circuit board by providing the first pad and the second pad on the fixing portions 511 of different centering supports 51, which helps to reduce the thickness of the sound-generating unit 100.

[0060] Please see Figure 4 and Figure 5 In one embodiment, the central magnetic circuit 121 includes a central magnet 1211 and a central magnetic guide plate 1212 disposed on the side of the central magnet 1211 facing the diaphragm 21. The side magnetic circuit 122 includes a side magnet 1221 and a side magnetic guide plate 1222 disposed on the side of the side magnet 1221 facing the diaphragm 21. The central magnet 1211 and the side magnet 1221 are both magnetized along the vibration direction of the diaphragm 21 but in opposite directions. A magnetic gap 13 is formed between the central magnetic guide plate 1212 and the side magnetic guide plate 1222. It should be noted that the side magnet 1221 includes a plurality of side magnet blocks, which are spaced apart circumferentially along the central magnet 1211. A clearance space is formed between any two adjacent side magnet blocks. The elastic arm portion 513 is provided with a clearance space to prevent interference between the elastic support member 5 and the side magnet 1221. The side magnetic plate 1222 surrounds the periphery of the central magnetic plate 1212 and is spaced apart from the central magnetic plate 1212 to form a magnetic gap 13. The side magnetic plate 1222 and the central magnetic plate 1212 are connected to conduct magnetism to ensure the magnetic flux of the magnetic gap 13.

[0061] It should be noted that the number of side magnetic plates 1222 can be one or more, without limitation. Similarly, the number of center magnetic plates 1212 can also be one or more. It should also be noted that the side magnetic plates 1222 are injection molded into the housing.

[0062] This utility model also proposes a sound-generating module, which includes a housing and a sound-generating unit 100, with the sound-generating unit 100 disposed within the housing. The sound-generating module can be a speaker module. The sound-generating module can be applied to electronic devices such as computers, mobile phones, and smart wearable devices. Since this sound-generating module adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0063] The above are merely exemplary embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A sound-emitting monomer, characterized in that, include: A magnetic circuit system, the magnetic circuit system including a magnetic yoke and a magnetic circuit unit disposed on the magnetic yoke, the magnetic circuit unit including a central magnetic circuit and a side magnetic circuit disposed around the central magnetic circuit, the central magnetic circuit and the side magnetic circuit being spaced apart and forming a magnetic gap between them; A vibration system includes a diaphragm, a voice coil, and a magnetic component disposed on the voice coil. The voice coil is located within a magnetic gap. One side of the voice coil is connected to the diaphragm, and the other side of the voice coil is connected to the magnetic component. The magnetic yoke has a clearance hole for avoiding the magnetic component. The magnetic gap communicates with the clearance hole. The magnetic component can provide a force to the voice coil that is opposite to the direction of the restoring force of the diaphragm.

2. The sound-generating unit as described in claim 1, characterized in that, The number of magnetic components is multiple, and the multiple magnetic components are arranged at intervals along the circumference of the voice coil. The number of clearance holes is the same as the number of magnetic components and they are set one-to-one.

3. The sound-generating unit as described in claim 2, characterized in that, The shape of the clearance hole is adapted to the shape of the magnetic component; Alternatively, the magnetic yoke may include a central magnetic yoke and a side magnetic yoke, wherein the central magnetic yoke and the side magnetic yoke are spaced apart and the clearance hole is formed between them.

4. The sound-generating unit as described in claim 1, characterized in that, The magnetic component includes an annular magnetic component, and the magnetic yoke includes a central magnetic yoke and a side magnetic yoke. The central magnetic yoke is connected to the central magnetic circuit, and the side magnetic yoke is connected to the side magnetic circuit. The central magnetic yoke and the side magnetic yoke are spaced apart and form the clearance hole between them.

5. The sound-generating unit as described in claim 1, characterized in that, The magnetic component is made of a magnetically conductive material or a permanent magnet material.

6. The sound-generating unit as described in any one of claims 1 to 5, characterized in that, The sound-generating unit also includes a back cover, and the side of the magnetic yoke facing away from the diaphragm is disposed on the back cover.

7. The sound-generating unit as described in claim 6, characterized in that, The rear cover protrudes in a direction away from the diaphragm to form a relief groove. The opening of the relief groove is set towards the relief hole and communicates with the relief hole. The relief groove is used to avoid the magnetic component. And / or, a leakage hole is provided on the magnetic yoke, and an isolation mesh hole corresponding to and communicating with the leakage hole is provided on the rear cover.

8. The sound-generating unit as described in any one of claims 1 to 5, characterized in that, The sound-generating unit also includes a housing and an elastic support member. The vibration system and the magnetic circuit system are respectively connected to the two ends of the housing. The outer periphery of the diaphragm is connected to the housing. One end of the elastic support member is connected to the housing, and the other end of the elastic support member is connected to the voice coil.

9. The sound-generating unit as described in claim 8, characterized in that, The elastic support includes at least two centering plates, each of which includes a fixing part, a mounting part, and a spring arm connecting the fixing part and the mounting part. The mounting part is connected to the housing, and the fixing part is connected to the voice coil.

10. The sound-generating unit as described in any one of claims 1 to 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 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 diaphragm. The central magnet and the side magnet are both magnetized along the vibration direction of the diaphragm but in opposite directions. The magnetic gap is formed between the central magnetic guide plate and the side magnetic guide plate.

11. 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 10, wherein the sound-generating unit is disposed within the housing.

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