Sound production monomer and sound production module

Abstract

The application discloses a sound emitting monomer and a sound emitting module, and relates to the technical field of sound energy conversion. The sound emitting monomer comprises a magnetic circuit system, a first vibration system and a second vibration system. The magnetic circuit system is formed with a main magnetic gap and an auxiliary magnetic gap. The main magnetic gap comprises a first magnetic gap and a second magnetic gap which are arranged at intervals along a second direction. The first vibration system comprises a first diaphragm, a first voice coil and a second voice coil. The first voice coil and the second voice coil are respectively located in the first magnetic gap and the second magnetic gap. The first voice coil and the second voice coil are both connected with the first diaphragm. The first vibration system and the second vibration system are respectively located on the two sides of the magnetic circuit system along a first direction. The second vibration system comprises a second diaphragm and a third voice coil. The third voice coil is arranged in the auxiliary magnetic gap. The third voice coil is connected with the second diaphragm. The first vibration system and the second vibration system can radiate sound waves of opposite phases to the outside. The far-field cancellation of sound is realized, so that the privacy of the user 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] With the widespread use of smart devices, more and more people are gradually realizing the importance of privacy. Therefore, users will also consider privacy as an important factor when choosing products. Currently, traditional speakers only have the function of producing sound. This means that when using a traditional speaker, in addition to the user being able to hear the sound emitted by the speaker, other people around the user can also hear the sound emitted by the speaker. This results in poor privacy for traditional speakers, making them unsuitable for call scenarios with a high degree of confidentiality. Summary of the Invention

[0003] The main objective of this invention is to propose a sound-generating unit and a sound-generating module, which aims to solve the problem of poor privacy in existing loudspeakers.

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

[0005] A magnetic circuit system having a main magnetic gap and an auxiliary magnetic gap, the main magnetic gap and the auxiliary magnetic gap being arranged along a first direction, the main magnetic gap including a first magnetic gap and a second magnetic gap being spaced apart along a second direction;

[0006] A first vibration system vibrates along the first direction. The first vibration system includes a first diaphragm, a first voice coil, and a second voice coil. The first voice coil and the second voice coil are located at the first magnetic gap and the second magnetic gap, respectively. Both the first voice coil and the second voice coil are connected to the first diaphragm.

[0007] The second vibration system vibrates along the first direction. The first vibration system and the second vibration system are located on both sides of the magnetic circuit system along the first direction. The second vibration system includes a second diaphragm and a third voice coil. The third voice coil is disposed in the auxiliary magnetic gap and is connected to the second diaphragm.

[0008] The long side of the first voice coil and / or the second voice coil extends along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0009] In one embodiment, the magnetic circuit system includes a magnetic circuit unit and a magnetic guide plate assembly. The magnetic circuit unit includes a central magnetic circuit, an intermediate magnetic circuit disposed around the central magnetic circuit, and a side magnetic circuit disposed around the intermediate magnetic circuit. The intermediate magnetic circuit includes a first intermediate magnetic circuit and a second intermediate magnetic circuit disposed on both sides of the central magnetic circuit along the second direction. A first magnetic gap surrounds the first intermediate magnetic circuit, and a second magnetic gap surrounds the second intermediate magnetic circuit. The magnetic guide plate assembly is disposed on the side of the magnetic circuit unit opposite to the first diaphragm, and the magnetic guide plate assembly forms the auxiliary magnetic gap.

[0010] In one embodiment, the magnetic guide plate assembly includes a central magnetic guide plate and an edge magnetic guide plate. The central magnetic circuit, the first intermediate magnetic circuit, and the second intermediate magnetic circuit are all disposed on the side away from the first diaphragm on the central magnetic guide plate. The side magnetic circuit is disposed on the side away from the first diaphragm on the edge magnetic guide plate. The edge magnetic guide plate is disposed around the central magnetic guide plate and is spaced apart from the central magnetic guide plate to form the auxiliary magnetic gap.

[0011] In one embodiment, the central magnetic circuit includes a central magnet and a central magnetic guide plate; the first intermediate magnetic circuit includes a first intermediate magnet and a first intermediate magnetic guide plate; the second intermediate magnetic circuit includes a second intermediate magnet and a second intermediate magnetic guide plate; the side magnetic circuit includes a side magnet and a side magnetic guide plate; the first intermediate magnetic guide plate is disposed on the side of the first intermediate magnet facing the first diaphragm; the second intermediate magnetic guide plate is disposed on the side of the second intermediate magnet facing the first diaphragm; and the side magnetic guide plate is disposed on the side of the side magnet facing the first diaphragm. The central magnet, the first intermediate magnet, the second intermediate magnet, and the side magnet are all magnetized along the first direction. The magnetization direction of the central magnet is the same as that of the side magnets, and the magnetization directions of the first intermediate magnet and the second intermediate magnet are opposite to that of the central magnet. Both ends of the central magnetic guide plate along the third direction are connected to the side magnetic guide plate.

[0012] In one embodiment, the sound-generating unit further includes a first housing and a second housing, the first housing and the second housing being respectively disposed on both sides of the magnetic circuit system along the first direction, the outer periphery of the first diaphragm being connected to the first housing, and the outer periphery of the second diaphragm being connected to the second housing.

[0013] In one embodiment, the sound-generating unit further includes a first elastic support and a second elastic support. One end of the first elastic support is connected to the first housing, and both the first voice coil and the second voice coil are connected to the other end of the first elastic support. One end of the second elastic support is connected to the second housing, and the third voice coil is connected to the other end of the second elastic support.

[0014] In one embodiment, the first elastic support includes a first centering support and a second centering support, which are spaced apart along the third direction. The first centering support includes a first fixing part, two first spring arms, and two first mounting parts. The two first spring arms are respectively disposed at both ends of the first fixing part, and the two first mounting parts are respectively disposed corresponding to one of the first spring arms. Each first mounting part is connected to the first housing, and the first fixing part is connected to the first voice coil and the second voice coil. The second centering support includes a second fixing part, two second spring arms, and two second mounting parts. The two second spring arms are respectively disposed at both ends of the second fixing part, and the two second mounting parts are respectively disposed corresponding to one of the second spring arms. Each second mounting part is connected to the first housing, and the second fixing part is connected to the first voice coil and the second voice coil.

[0015] The second elastic support also includes at least two auxiliary centering supports. Each auxiliary centering support includes an auxiliary fixing part, an auxiliary mounting part, and an auxiliary spring arm part connecting the auxiliary fixing part and the auxiliary mounting part. Each auxiliary fixing part is connected to the third voice coil, and each auxiliary mounting part is connected to the second housing.

[0016] In one embodiment, the first centering support and the second centering support are provided with pad components, the pad components including a first pad, a second pad, a third pad and a fourth pad, the first pad and the second pad are disposed on the first mounting part, the first voice coil and the second voice coil are connected in series, the lead of the first voice coil is electrically connected to the first pad, and the lead of the second voice coil is electrically connected to the second pad; any two of the auxiliary mounting parts are respectively provided with a third pad and a fourth pad, the third pad and the fourth pad are electrically connected to the lead of the third voice coil.

[0017] In one embodiment, the sound-generating unit includes a first operating state in which the first vibration system and the second vibration system radiate sound waves of opposite phase.

[0018] In one embodiment, the sound-generating unit includes a second operating state in which the first vibration system and the second vibration system radiate sound waves of the same phase outward.

[0019] The present invention also proposes a sound-generating module, the sound-generating module comprising a housing and the aforementioned sound-generating unit, the sound-generating unit being disposed within the housing.

[0020] 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 first 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.

[0021] In one embodiment, the sound-emitting module has a first mode in which the first sound hole and the second sound hole radiate sound waves of opposite phase outward.

[0022] In one embodiment, the sound-emitting module has a second mode in which the first sound hole and the second sound hole radiate sound waves of the same phase outward.

[0023] The technical solution of this invention uses a first vibration system and a second vibration system to generate sound independently. The first vibration system is driven by a first voice coil and a second voice coil to vibrate a first diaphragm, and the second vibration system is driven by a third voice coil to vibrate a second diaphragm. The first and second vibration systems can radiate sound waves with opposite phases outward. By utilizing the dipole effect, far-field cancellation of sound is achieved, while people located near the sound-generating unit can still hear the sound clearly, thereby increasing user privacy. Attached Figure Description

[0024] 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.

[0025] Figure 1 A schematic diagram of the structure of an embodiment of the sound-generating unit provided by the present invention;

[0026] Figure 2 A schematic diagram of the structure of an embodiment of the sound-generating unit provided by the present invention from another perspective;

[0027] Figure 3 An exploded structural diagram of an embodiment of the sound-generating monomer provided by the present invention;

[0028] Figure 4 A cross-sectional structural schematic diagram of an embodiment of the sound-generating unit provided by the present invention;

[0029] Figure 5 A cross-sectional structural schematic diagram of another embodiment of the sound-generating unit provided by the present invention;

[0030] Figure 6An exploded structural diagram of another embodiment of the sound-generating monomer provided by the present invention;

[0031] Figure 7 A schematic diagram of a structure of an embodiment of the sound-generating module or electronic device provided by the present invention;

[0032] Figure 8 for Figure 7 A cross-sectional schematic diagram of part of the structure.

[0033] Explanation of icon numbers:

[0034] 100. Sound-generating unit; 1. Magnetic circuit system; 11. First magnetic gap; 12. Second magnetic gap; 13. Auxiliary magnetic gap; 14. Magnetic circuit unit; 141. Central magnetic circuit; 1411. Central magnet; 1412. Central magnetic guide plate; 142. Intermediate magnetic circuit; 1421. First intermediate magnetic circuit; 14211. First intermediate magnet; 14212. First intermediate magnetic guide plate; 1422. Second intermediate magnetic circuit; 14221. Second intermediate magnet; 14222. Second intermediate magnetic guide plate; 143. Side magnetic circuit; 1431. Side magnet; 14311. First connecting area; 14312. Second connecting area; 1432. Side magnetic guide plate; 15. Magnetic guide plate assembly; 151. Central magnetic guide plate; 152. Side magnetic guide plate; 2. First vibration system ; 21. First voice coil; 22. Second voice coil; 23. First diaphragm; 231. First reinforcing part; 3. Second vibration system; 31. Third voice coil; 32. Second diaphragm; 321. Second reinforcing part; 41. First housing; 42. Second housing; 5. First elastic support; 51. First centering support; 511. First fixing part; 512. First spring arm part; 513. First mounting part; 52. Second centering support; 521. Second fixing part; 522. Second spring arm part; 523. Second mounting part; 6. Second elastic support; 61. Auxiliary centering support; 611. Auxiliary fixing part; 612. Auxiliary spring arm part; 613. Auxiliary mounting part; 71. First pad; 72. Second pad; 73. Third pad; 74. Fourth pad;

[0035] 200, outer shell; 201, first acoustic cavity; 202, second acoustic cavity; 203, first acoustic hole; 204, second acoustic hole; 300, protective shell; 301, first sound outlet; 302, second sound outlet.

[0036] 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

[0037] 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.

[0038] 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.

[0039] 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.

[0040] With the widespread use of smart devices, more and more people are gradually realizing the importance of privacy. Therefore, users will also consider privacy as an important factor when choosing products. Currently, traditional speakers only have the function of producing sound. This means that when using a traditional speaker, in addition to the user being able to hear the sound emitted by the speaker, other people around the user can also hear the sound emitted by the speaker. This results in poor privacy for traditional speakers, making them unsuitable for call scenarios with a high degree of confidentiality.

[0041] Therefore, it is necessary to propose a sound-generating unit and a sound-generating module to solve the problem of poor privacy in existing sound-generating modules.

[0042] Please see Figures 1 to 4In one embodiment of the present invention, the sound-generating unit 100 includes a magnetic circuit system 1, a first vibration system 2, and a second vibration system 3. The magnetic circuit system 1 forms a main magnetic gap and an auxiliary magnetic gap 13, which are arranged along a first direction. The main magnetic gap includes a first magnetic gap 11 and a second magnetic gap 12 spaced apart along a second direction. The first vibration system 2 vibrates along the first direction and includes a first diaphragm 23, a first voice coil 21, and a second voice coil 22. The first voice coil 21 and the second voice coil 22 are respectively located in the first magnetic gap. 11 and the second magnetic gap 12, the first voice coil 21 and the second voice coil 22 are both connected to the first diaphragm 23; the second vibration system 3 vibrates along the first direction, the first vibration system 2 and the second vibration system 3 are located on both sides of the magnetic circuit system 1 along the first direction, the second vibration system 3 includes the second diaphragm 32 and the third voice coil 31, the third voice coil 31 is disposed in the auxiliary magnetic gap 13, and the third voice coil 31 is connected to the second diaphragm 32; the long side of the first voice coil 21 and / or the second voice coil 22 extends along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0043] The sound-generating unit 100 of this invention can be a miniature sound-generating unit, and the sound-generating unit 100 can be applied in a sound-generating module or electronic device, such as a computer, mobile phone, smart wearable device, etc.

[0044] The technical solution of this invention employs a first vibration system 2 and a second vibration system 3 for independent vibration sound generation. The first vibration system 2 uses a first voice coil 21 and a second voice coil 22 to drive the first diaphragm 23 to vibrate and generate sound, while the second vibration system 3 uses a third voice coil 31 to drive the second diaphragm 32 to vibrate and generate sound. The first vibration system 2 and the second vibration system 3 can radiate sound waves of opposite phase, utilizing the dipole effect to achieve far-field cancellation of sound. People located near the sound-generating unit 100 can still hear the sound clearly, thus increasing user privacy. It should be noted that the first vibration system 2 and the second vibration system 3 can also be used to radiate sound waves of the same phase, thereby enhancing the sound and allowing the loudness emitted by the sound-generating unit 100 to be superimposed. It should also be noted that, compared to the long side of the first voice coil 21 and the long side of the second voice coil 22 extending along the second direction, the first magnetic gap 11 and the second magnetic gap 12 are also spaced apart along the second direction. The short side of the first voice coil 21 and the short side of the second voice coil 22 share a magnet, while the long side of the first voice coil 21 and the long side of the second voice coil 22 each require a long magnet or a long magnetic conductor. In this case, the technical solution of the present invention extends the long side of the first voice coil 21 along the third direction, in conjunction with the first magnetic gap 11 and the second magnetic gap 12 spaced apart along the second direction. In the first magnetic circuit system 1, the long side of the first voice coil 21 and the long or short side of the second voice coil 22 share a long magnet or a long magnetic conductor. This shared feature effectively improves the magnetic field utilization rate of the magnetic circuit system 1. Similarly, the long side of the second voice coil 22 extends along a third direction, and in conjunction with the first magnetic gap 11 and the second magnetic gap 12 spaced apart along the second direction, the long side of the second voice coil 22 and the long or short side of the first voice coil 21 share a long magnet or a long magnetic conductor. This shared feature also effectively improves the magnetic field utilization rate of the magnetic circuit system 1. The first direction is... Figure 4 The vertical direction is shown, and the second direction is... Figure 4 The left and right directions are shown, and the third direction is... Figure 5 The front and back directions are shown.

[0045] It should be noted that when the first voice coil 21 and the second voice coil 22 are energized, the first voice coil 21 and the second voice coil 22 reciprocate and cut magnetic lines of force within the first magnetic gap 11 and the second magnetic gap 12 respectively, causing the first diaphragm 23 to vibrate up and down, thereby driving the air to produce sound and completing the energy conversion between electroacoustics; when the third voice coil 31 is energized, the third voice coil 31 reciprocates and cuts magnetic lines of force within the auxiliary magnetic gap 13, causing the second diaphragm 32 to vibrate up and down, thereby driving the air to produce sound and completing the energy conversion between electroacoustics.

[0046] According to one embodiment of the present invention, the first vibration system 2 further includes a first magnetic component. The first magnetic component is disposed on the side of the first voice coil 21 and the second voice coil 22 opposite to the first diaphragm 23. The first magnetic component is subjected to static magnetic force. When the first magnetic component is in an equilibrium position, the resultant force of the static magnetic force on the first magnetic component is zero. If the first voice coil 21 and the second voice coil 22 vibrate upwards from their equilibrium position, the first magnetic component moves upwards along with the first voice coil 21 and the second voice coil 22. At this time, the direction of the resultant force of the static magnetic force on the first magnetic component is upwards, and the direction of the resultant force of the static magnetic force on the first magnetic component is the same as the vibration direction of the first voice coil 21 and the second voice coil 22. The first magnetic component moves downward along with the second magnetic component, and the direction of the static magnetic force on the first magnetic component is downward. The direction of the static magnetic force on the first magnetic component is consistent with the direction of vibration of the first voice coil 21 and the second voice coil 22, which also effectively increases the driving force of the first voice coil 21 and the second voice coil 22 on the diaphragm, thereby improving the performance of the sound-generating unit 100 without affecting the thickness of the sound-generating unit 100. The first magnetic component can be ring-shaped. Alternatively, it can be a first magnetic element and a second magnetic element that are independent of each other. The first magnetic element is connected to the first voice coil 21, and the second magnetic element is connected to the second voice coil 22. Both the first and second magnetic elements can be ring-shaped. There can be multiple first magnetic elements arranged sequentially along the circumference of the first voice coil 21, and multiple second magnetic elements arranged sequentially along the circumference of the second voice coil 22. It should be noted that the first and second magnetic elements can be made of permanent magnet materials, such as ferrite or noble metal alloys; they can also be made of magnetically conductive materials; or they can be made of soft magnetic materials, such as pure iron or nickel.

[0047] According to another embodiment of the present invention, the second vibration system 3 further includes a second magnetic component, which is disposed on the side of the third voice coil 31 away from the second diaphragm 32. The second magnetic component is subjected to static magnetic force. When the second magnetic component is in the equilibrium position, the resultant force of the static magnetic force on the second magnetic component is zero. If the third voice coil 31 vibrates upward from the equilibrium position, the second magnetic component moves upward together with the third voice coil 31. At this time, the direction of the resultant force of the static magnetic force on the second magnetic component is upward, and the direction of the resultant force of the static magnetic force on the second magnetic component is the same as that of the third voice coil 31. The vibration direction is consistent with that of the third voice coil 31, thus effectively increasing the driving force of the third voice coil 31 on the diaphragm and improving the performance of the sound-generating unit 100. Similarly, if the third voice coil 31 vibrates downward from its equilibrium position, the second magnetic component moves downward along with the third voice coil 31. At this time, the resultant force of the static magnetic force on the second magnetic component is downward, and the direction of the static magnetic force on the second magnetic component is consistent with the vibration direction of the third voice coil 31, which also effectively increases the driving force of the third voice coil 31 on the diaphragm, thereby improving the performance of the sound-generating unit 100 without affecting its thickness. The second magnetic component can be ring-shaped. Furthermore, the second magnetic component can include multiple independent third magnetic components, which are spaced apart along the circumference of the third voice coil 31. It should be noted that the third magnetic components can be made of permanent magnet materials, such as ferrite, noble metal alloys, etc.; the third magnetic components can also be made of magnetically conductive materials; the third magnetic components can also be made of soft magnetic materials, such as pure iron, nickel, etc.

[0048] Please see Figure 3 According to one embodiment of the present invention, a first reinforcing part 231 is provided on the first diaphragm 23. By providing the first reinforcing part 231, the sound-generating unit 100 has better directivity and transient response in the reproduction of high-frequency signals.

[0049] Please see Figure 3 According to another embodiment of the present invention, a second reinforcing part 321 is provided on the second diaphragm 32, and by providing the second reinforcing part 321, the sound-generating unit 100 has better directivity and transient response in the reproduction of high-frequency signals.

[0050] Please see Figures 1 to 4In one embodiment, the magnetic circuit system 1 includes a magnetic circuit unit 14 and a magnetic guide plate assembly 15. The magnetic circuit unit 14 includes a central magnetic circuit 141, an intermediate magnetic circuit 142 disposed around the central magnetic circuit 141, and a side magnetic circuit 143 disposed around the intermediate magnetic circuit 142. The intermediate magnetic circuit 142 includes a first intermediate magnetic circuit 1421 and a second intermediate magnetic circuit 1422 respectively disposed on both sides of the central magnetic circuit 141 along a second direction. A first magnetic gap 11 surrounds the first intermediate magnetic circuit 1421, and a second magnetic gap 12 surrounds the second intermediate magnetic circuit 1422. The magnetic guide plate assembly 15 is disposed on the side of the magnetic circuit unit 14 away from the first diaphragm 23, and the magnetic guide plate assembly 15 forms an auxiliary magnetic gap 13. By setting the magnetic guide plate assembly 15 for magnetic guidance, sufficient magnetic flux is ensured in the auxiliary magnetic gap 13, which helps to improve the performance of the sound-generating unit 100.

[0051] Please see Figure 3 and Figure 4 In one embodiment, the magnetic guide plate assembly 15 includes a central magnetic guide plate 151 and an edge magnetic guide plate 152. The central magnetic circuit 141, the first intermediate magnetic circuit 1421, and the second intermediate magnetic circuit 1422 are all disposed on the side away from the first diaphragm 23 on the central magnetic guide plate 151. The edge magnetic circuit 143 is disposed on the side away from the first diaphragm 23 on the edge magnetic guide plate 152. The edge magnetic guide plate 152 is disposed around the central magnetic guide plate 151 and spaced apart from the central magnetic guide plate 151 to form an auxiliary magnetic gap 13. The central magnetic guide plate 151 and the edge magnetic guide plate 152 conduct magnetism, thereby ensuring that the auxiliary magnetic gap 13 has sufficient magnetic flux. The edge magnetic guide plate 152 is spaced apart from the central magnetic guide plate 151 to avoid interference with the third voice coil 31.

[0052] Please see Figures 3 to 5In one embodiment, the central magnetic circuit 141 includes a central magnet 1411 and a central magnetic guide plate 1412; the first intermediate magnetic circuit 1421 includes a first intermediate magnet 14211 and a first intermediate magnetic guide plate 14212; the second intermediate magnetic circuit 1422 includes a second intermediate magnet 14221 and a second intermediate magnetic guide plate 14222; the side magnetic circuit 143 includes a side magnet 1431 and a side magnetic guide plate 1432; the first intermediate magnetic guide plate 14212 is disposed on the side of the first intermediate magnet 14211 facing the first diaphragm 23; the second intermediate magnetic guide plate 14212... 222 is disposed on the side of the second intermediate magnet 14221 facing the first diaphragm 23, and the side magnetic plate 1432 is disposed on the side of the side magnet 1431 facing the first diaphragm 23. The center magnet 1411, the first intermediate magnet 14211, the second intermediate magnet 14221 and the side magnet 1431 are all magnetized along the first direction. The magnetization direction of the center magnet 1411 is the same as that of the side magnet 1431, and the magnetization directions of the first intermediate magnet 14211 and the second intermediate magnet 14221 are opposite to those of the center magnet 1411. In this system, a central magnetic plate 1412, a first intermediate magnetic plate 14212, and a side magnetic plate 1432 form a first magnetic gap 11, while a second magnetic gap 12 is formed by the central magnetic plate 1412, a second intermediate magnetic plate 14222, and a side magnetic plate 1432. The magnetization direction of the central magnet 1411 is the same as that of the side magnet 1431, while the magnetization directions of the first intermediate magnet 14211 and the second intermediate magnet 14221 are opposite to those of the central magnet 1411. This ensures that the first voice coil 21 and the second voice coil 22 can vibrate in the same direction when the current flows in the same direction. In this embodiment, both ends of the central magnetic plate 1412 along a third direction are connected to the side magnetic plate 1432 to achieve the connection and fixation of the components of the magnetic circuit system 1.

[0053] In one embodiment, the sound-generating unit 100 further includes a first housing 41 and a second housing 42, which are respectively disposed on both sides of the magnetic circuit system 1 along a first direction. The outer periphery of the first diaphragm 23 is connected to the first housing 41, and the outer periphery of the second diaphragm 32 is connected to the second housing 42. By providing reliable support for the first diaphragm 23 through the first housing 41 and reliable support for the second diaphragm 32 through the second housing 42, and by connecting both sides of the magnetic circuit system 1 to the first housing 41 and the second housing 42 respectively, a stable connection is achieved between the magnetic circuit system 1 and the vibration system 2 of the sound-generating unit 100 and the first housing 41 and the second housing 42.

[0054] Please see Figures 3 to 6According to an embodiment of the present invention, the central magnetic plate 151 is provided with a first clearance hole corresponding to the first magnetic component, and the central magnetic plate 151 is provided with a second clearance hole corresponding to the second magnetic component. Thus, by adjusting the size of the first clearance hole, the magnitude of the resultant force of the static magnetic force on the corresponding first magnetic component can be adjusted, and by adjusting the size of the second clearance hole, the magnitude of the resultant force of the static magnetic force on the corresponding second magnetic component can be adjusted.

[0055] In one embodiment, the side magnet 1431 includes a first magnet block, a second magnet block, a third magnet block, and a fourth magnet block arranged sequentially and spaced apart along the circumference of the central magnetic circuit 141. The first and third magnet blocks have a first connection region 14311 on the side facing the diaphragm, and the second and fourth magnet blocks have a second connection region 14312 on the side facing the diaphragm. The side magnetic guide plate connected to the first connection region 14311 is connected to the central magnetic guide plate 1412. This ensures stable support and connection between the various structural components of the magnetic circuit system 1 and the housing. Specifically, the first and third magnet blocks are located in a third direction, and the second and fourth magnet blocks are located in a second direction; that is, the first connection region 14311 is located in a third direction, and the second connection region 14312 is located in a second direction.

[0056] According to another embodiment of the present invention, the side magnetic plate 1432 is injection molded into the first housing 41; by injection molding the side magnetic plate 1432 into the first housing 41, the side magnetic plate 1432 can provide support for the side magnet 1431.

[0057] Please see Figure 1 , Figure 2 , Figure 3 and Figure 6 In one embodiment, the sound-generating unit 100 further includes a first elastic support 5 and a second elastic support 6. One end of the first elastic support 5 is connected to the first housing 41, and the first voice coil 21 and the second voice coil 22 are both connected to the other end of the first elastic support 5. One end of the second elastic support 6 is connected to the second housing 42, and the third voice coil 31 is connected to the other end of the second elastic support 6. By setting the first elastic support 5 to center and support the first voice coil 21 and the second voice coil 22, polarization of the first voice coil 21 and the second voice coil 22 is prevented, thereby improving the vibration stability of the first voice coil 21 and the second voice coil 22. By setting the second elastic support 6 to center and support the third voice coil 31, polarization of the third voice coil 31 is prevented, thereby improving the vibration stability of the third voice coil 31.

[0058] According to one embodiment of the present invention, the first elastic support 5 can be a single integral structural component, that is, the first elastic support 5 includes a first annular fixing portion and a plurality of first elastic arms 512 arranged sequentially and spaced around the periphery of the first annular fixing portion. Each first elastic arm 512 is provided with a first mounting portion 513. The first voice coil 21 and the second voice coil 22 are fixed to the first annular fixing portion, and each first mounting portion 513 is connected to the first housing 41. Compared with using multiple independent support components to support the first voice coil 21 and the second voice coil 22 respectively, the first elastic support 5 can provide better support stability for the first voice coil 21 and the second voice coil 22, and adopts... The first elastic support 5 also facilitates wiring; the second elastic support 6 can be an integral structural component, that is, the second elastic support 6 includes a second annular fixing part and a plurality of second elastic arms 522 arranged sequentially and spaced around the second annular fixing part. Each second elastic arm 522 is provided with a second mounting part 523. The third voice coil 31 is fixed to the second annular fixing part, and each second mounting part 523 is connected to the second housing 42. Compared with using multiple independent support members to support the third voice coil 31, the second elastic support 6 can provide better support stability for the third voice coil 31, and the use of the second elastic support 6 also facilitates wiring.

[0059] In one embodiment, the first elastic support 5 includes a first centering support 51 and a second centering support 52, which are spaced apart along a third direction. The first centering support 51 includes a first fixing part 511, two first spring arms 512, and two first mounting parts 513. The two first spring arms 512 are respectively disposed at both ends of the first fixing part 511, and the two first mounting parts 513 are respectively disposed corresponding to one first spring arm 512. Each first mounting part 513 is connected to the first housing 41, and the first fixing part 511 is connected to the first voice coil 21 and the second voice coil 22. The second centering support 52 includes a second fixing part 521, two second spring arms 522, and... Two second mounting portions 523 and two second spring arms 522 are respectively disposed at both ends of the second fixing portion 521. Each of the two second mounting portions 523 is disposed corresponding to a second spring arm 522. Each second mounting portion 523 is connected to the first housing 41. The second fixing portion 521 is connected to the first voice coil 21 and the second voice coil 22. The second elastic support member 6 also includes at least two auxiliary centering support pieces 61. Each auxiliary centering support piece 61 includes an auxiliary fixing portion 611, an auxiliary mounting portion 613, and an auxiliary spring arm 612 connecting the auxiliary fixing portion 611 and the auxiliary mounting portion 613. Each auxiliary fixing portion 611 is connected to the third voice coil 31, and each auxiliary mounting portion 613 is connected to the second housing 42. Specifically, by setting the first centering support plate 51 and the second centering support plate 52 to center and support the first voice coil 21 and the second voice coil 22, polarization of the first voice coil 21 and the second voice coil 22 is prevented, thereby improving the vibration stability of the first voice coil 21 and the second voice coil 22. Compared with using a single integral centering support plate, using two independent first centering support plates 51 and the second centering support plate 52 eliminates the structural components connecting the first centering support plates 51 and the second centering support plate 52, thus reducing costs. Similarly, by setting multiple independent auxiliary centering support plates 61 to center and support the third voice coil 31, polarization of the third voice coil 31 is prevented, thereby improving the vibration stability of the third voice coil 31. Compared with using a single integral centering support plate, using multiple independent auxiliary centering support plates 61 to support the third voice coil 31 eliminates the connecting structure between adjacent auxiliary centering support plates 61, thus reducing costs.

[0060] According to an embodiment of the present invention, the first elastic support member 5 includes a first centering support plate 51 and a second centering support plate 52. The first centering support plate 51 and the second centering support plate 52 are spaced apart along a third direction. The first centering support plate 51 includes a first fixing part 511, two first elastic arms 512, and two first mounting parts 513. The two first elastic arms 512 are respectively disposed at both ends of the first fixing part 511, and the two first mounting parts 513 are respectively disposed corresponding to one first elastic arm 512. Each first mounting part 513 is connected to the first fixing part 511. A housing 41 is connected, and a first fixing part 511 is connected to a first voice coil 21 and a second voice coil 22. A second centering support 52 includes a second fixing part 521, two second spring arms 522, and two second mounting parts 523. The two second spring arms 522 are respectively disposed at both ends of the second fixing part 521, and the two second mounting parts 523 are respectively disposed corresponding to one of the second spring arms 522. Each second mounting part 523 is connected to the second housing 42, and the second fixing part 521 is connected to the first voice coil 21 and the second voice coil 22. By setting the first centering support 51 to center and support the first voice coil 21, polarization of the first voice coil 21 is prevented, thus improving the vibration stability of the first voice coil 21. By setting the second centering support 52 to center and support the second voice coil 22, polarization of the second voice coil 22 is prevented, thus improving the vibration stability of the second voice coil 22.

[0061] In one embodiment, the first centering support 51 and the second centering support 52 are provided with pad components, which include a first pad 71, a second pad 72, a third pad 73 and a fourth pad 74. The first pad 71 and the second pad 72 are disposed on the first mounting part 513. The first voice coil 21 and the second voice coil 22 are connected in series. The lead of the first voice coil 21 is electrically connected to the first pad 71, and the lead of the second voice coil 22 is electrically connected to the second pad 72. The third pad 73 and the fourth pad 74 are respectively disposed on any two auxiliary mounting parts 613. The third pad 73 and the fourth pad 74 are electrically connected to the lead of the third voice coil 31. Compared to setting a circuit board connected to the voice coil, the sound-generating unit 100 in this embodiment eliminates the circuit board structure by setting the first pad 71 and the second pad 72 on the first mounting part 513, and setting the third pad 73 and the fourth pad 74 on any two auxiliary mounting parts 613, which helps to reduce the thickness of the sound-generating unit 100.

[0062] According to an embodiment of the present invention, the first elastic support member 5 is provided with a first sheet magnetic component, wherein the first sheet magnetic component can be made of permanent magnet material, such as ferrite, noble metal alloy, etc.; the first sheet magnetic component can also be made of magnetically conductive material; the first sheet magnetic component can also be made of soft magnetic material, such as pure iron, nickel, etc.; wherein, the first sheet magnetic component is subjected to static magnetic force, and the resultant force of the static magnetic force on the first sheet magnetic component is zero when it is in the equilibrium position. When the first voice coil 21 and the second voice coil 22 vibrate upward from the equilibrium position, the direction of the resultant force of the static magnetic force on the first sheet magnetic component is also upward. This force will act on the first voice coil 21 and the second voice coil 22 through the first elastic support member 5. Due to the static magnetic force on the first sheet magnetic component, The direction of the resultant force is consistent with the vibration direction of the first voice coil 21 and the second voice coil 22, thereby effectively increasing the driving force of the first voice coil 21 and the second voice coil 22 on the diaphragm, and thus effectively improving the sensitivity of the sound-generating unit 100. Similarly, when the first voice coil 21 and the second voice coil 22 vibrate downward from their equilibrium position, the direction of the resultant force of the static magnetic force on the first sheet magnetic component is also downward. This force will act on the first voice coil 21 and the second voice coil 22 through the first elastic support 5. Since the direction of the resultant force of the static magnetic force on the first sheet magnetic component is consistent with the vibration direction of the first voice coil 21 and the second voice coil 22, the driving force of the first voice coil 21 and the second voice coil 22 on the diaphragm is effectively increased, thereby effectively improving the sensitivity of the sound-generating unit 100.

[0063] According to another embodiment of the present invention, the second elastic support 6 is provided with a second sheet magnetic component, wherein the second sheet magnetic component can be made of permanent magnet material, such as ferrite, noble metal alloy, etc.; the second sheet magnetic component can also be made of magnetically conductive material; the second sheet magnetic component can also be made of soft magnetic material, such as pure iron, nickel, etc.; wherein, the second sheet magnetic component is subjected to static magnetic force, and the resultant force of the static magnetic force on the second sheet magnetic component is zero when it is in the equilibrium position. When the third voice coil 31 vibrates upward from the equilibrium position, the direction of the resultant force of the static magnetic force on the second sheet magnetic component is also upward, and this force will act on the third voice coil 31 through the second elastic support 6. The direction of the resultant force of the static magnetic force on the second magnetic component is consistent with the vibration direction of the third voice coil 31, thereby effectively increasing the driving force of the third voice coil 31 on the diaphragm and thus effectively improving the sensitivity of the sound-generating unit 100. Similarly, when the third voice coil 31 vibrates downward from its equilibrium position, the direction of the resultant force of the static magnetic force on the second magnetic component is also downward. This force will act on the third voice coil 31 through the second elastic support 6. Since the direction of the resultant force of the static magnetic force on the second magnetic component is consistent with the vibration direction of the third voice coil 31, the driving force of the third voice coil 31 on the diaphragm is effectively increased, thereby effectively improving the sensitivity of the sound-generating unit 100.

[0064] In one embodiment, the sound-emitting unit 100 includes a first operating state in which a first vibration system 2 and a second vibration system 3 radiate sound waves of opposite phase. In the first operating state, the first vibration system 2 and the second vibration system 3 radiate sound waves of opposite phase, allowing the sound-emitting unit 100 to be applied to electronic devices requiring call privacy, achieving better low-leakage performance. Understandably, in the first operating state, the sound-emitting unit 100 is used as a receiver.

[0065] In one embodiment, the sound-emitting unit 100 further includes a second operating state in which the first vibration system 2 and the second vibration system 3 radiate sound waves of the same phase outwards. In the second operating state, the first vibration system 2 and the second vibration system 3 radiate sound waves of the same phase outwards, thereby increasing the radiated volume and loudness when the sound-emitting unit 100 is applied to an electronic device. Understandably, in the first operating state, the sound-emitting unit 100 is used as a loudspeaker.

[0066] Please see 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 a computer, mobile phone, smart wearable device, etc. 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 elaborated here.

[0067] 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 first vibration system 2. The outer shell 200 has a first acoustic hole 203 communicating with the first acoustic cavity 201 and a second acoustic hole 204 communicating with the second acoustic cavity 202. The first vibration system 2 is disposed corresponding to the first acoustic cavity 201, and the second vibration system 3 is disposed corresponding to the second acoustic cavity 202. The sound waves generated by the first vibration system 2 can be conducted to the outside through the first acoustic cavity 201 and the first acoustic hole 203 in sequence, and the sound waves generated by the second vibration system 3 can be conducted to the outside through the second acoustic cavity 202 and the second acoustic hole 204 in sequence.

[0068] In one embodiment, the sound-generating module has a first mode in which the first sound hole 203 and the second sound hole 204 radiate sound waves of opposite phase outward, thereby enabling the sound-generating module to achieve a better low-leakage effect.

[0069] In one embodiment, the sound-emitting module has a second mode. In the first mode, the first sound hole 203 and the second sound hole 204 radiate sound waves of the same phase outward, which can enhance the radiation volume and loudness of the sound-emitting module.

[0070] The present invention also proposes an electronic device, which includes a protective shell 300 and the aforementioned sound-emitting unit 100, wherein the sound-emitting unit 100 is disposed within the protective shell 300.

[0071] The protective shell 300 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 arranged on both sides of the sound-generating unit 100 along the vibration direction of the first vibration system 2. The protective shell 300 has a first sound outlet 301 communicating with the first acoustic cavity 201, and a second sound outlet 302 communicating with the second acoustic cavity 202. The sound waves generated by the first vibration system 2 can be conducted to the outside through the first acoustic cavity 201 and the first sound outlet 301 in sequence, and the sound waves generated by the second vibration system 3 can be conducted to the outside through the second acoustic cavity 202 and the second sound outlet 302 in sequence. It should be noted that the electronic device can be a computer, mobile phone, speaker, or smart wearable device, etc.

[0072] In one embodiment, the electronic device has an earpiece mode, in which the first sound outlet 301 and the second sound outlet 302 radiate sound waves of opposite phase to the outside, thereby enabling the electronic device to achieve a better low leakage effect.

[0073] In one embodiment, the electronic device has an external speaker mode. In the external speaker mode, the first sound outlet 301 and the second sound outlet 302 radiate sound waves of the same phase outward, which can increase the radiated volume and loudness of the electronic device.

[0074] 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 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 having a main magnetic gap and an auxiliary magnetic gap, the main magnetic gap and the auxiliary magnetic gap being arranged along a first direction, the main magnetic gap including a first magnetic gap and a second magnetic gap being spaced apart along a second direction; A first vibration system vibrates along the first direction. The first vibration system includes a first diaphragm, a first voice coil, and a second voice coil. The first voice coil and the second voice coil are located at the first magnetic gap and the second magnetic gap, respectively. Both the first voice coil and the second voice coil are connected to the first diaphragm. The second vibration system vibrates along the first direction. The first vibration system and the second vibration system are located on both sides of the magnetic circuit system along the first direction. The second vibration system includes a second diaphragm and a third voice coil. The third voice coil is disposed in the auxiliary magnetic gap and is connected to the second diaphragm. The long side of the first voice coil and / or the second voice coil extends along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other; The magnetic circuit system includes a magnetic circuit unit and a magnetic guide plate assembly. The magnetic circuit unit includes a central magnetic circuit, an intermediate magnetic circuit disposed around the central magnetic circuit, and a side magnetic circuit disposed around the intermediate magnetic circuit. The intermediate magnetic circuit includes a first intermediate magnetic circuit and a second intermediate magnetic circuit disposed on both sides of the central magnetic circuit along the second direction. A first magnetic gap surrounds the first intermediate magnetic circuit, and a second magnetic gap surrounds the second intermediate magnetic circuit. The magnetic guide plate assembly is disposed on the side of the magnetic circuit unit opposite to the first diaphragm, and the magnetic guide plate assembly forms the auxiliary magnetic gap. The central magnetic circuit includes a central magnet and a central magnetic guide plate; the first intermediate magnetic circuit includes a first intermediate magnet and a first intermediate magnetic guide plate; the second intermediate magnetic circuit includes a second intermediate magnet and a second intermediate magnetic guide plate; the side magnetic circuit includes a side magnet and a side magnetic guide plate; the first intermediate magnetic guide plate is disposed on the side of the first intermediate magnet facing the first diaphragm; the second intermediate magnetic guide plate is disposed on the side of the second intermediate magnet facing the first diaphragm; the side magnetic guide plate is disposed on the side of the side magnet facing the first diaphragm; the central magnet, the first intermediate magnet, the second intermediate magnet, and the side magnet are all magnetized along the first direction; the magnetization direction of the central magnet is the same as the magnetization direction of the side magnet; the magnetization directions of the first intermediate magnet and the second intermediate magnet are opposite to the magnetization direction of the central magnet; both ends of the central magnetic guide plate along the third direction are connected to the side magnetic guide plate. Both the first magnetic gap and the second magnetic gap are connected to the auxiliary magnetic gap, and the third voice coil is disposed facing the first voice coil and the second voice coil; Both the first voice coil and the second voice coil have a first magnetic component on the side opposite to the first diaphragm. The first magnetic component can provide the first voice coil and the second voice coil with a force opposite to the direction of the restoring force of the first diaphragm.

2. The sound-generating unit as described in claim 1, characterized in that, The magnetic guide plate assembly includes a central magnetic guide plate and an edge magnetic guide plate. The central magnetic circuit, the first intermediate magnetic circuit, and the second intermediate magnetic circuit are all disposed on the side away from the first diaphragm on the central magnetic guide plate. The side magnetic circuit is disposed on the side away from the first diaphragm on the edge magnetic guide plate. The edge magnetic guide plate is disposed around the central magnetic guide plate and is spaced apart from the central magnetic guide plate to form the auxiliary magnetic gap.

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

4. The sound-generating unit as described in claim 3, characterized in that, The sound-generating unit further includes a first elastic support and a second elastic support. One end of the first elastic support is connected to the first housing, and the first voice coil and the second voice coil are both connected to the other end of the first elastic support. One end of the second elastic support is connected to the second housing, and the third voice coil is connected to the other end of the second elastic support.

5. The sound-generating unit as described in claim 4, characterized in that, The first elastic support includes a first centering support plate and a second centering support plate, which are spaced apart along the third direction. The first centering support plate includes a first fixing part, two first spring arms, and two first mounting parts. The two first spring arms are respectively disposed at both ends of the first fixing part, and the two first mounting parts are respectively disposed corresponding to one of the first spring arms. Each first mounting part is connected to the first housing, and the first fixing part is connected to the first voice coil and the second voice coil. The second centering support plate includes a second fixing part, two second spring arms, and two second mounting parts. The two second spring arms are respectively disposed at both ends of the second fixing part, and the two second mounting parts are respectively disposed corresponding to one of the second spring arms. Each second mounting part is connected to the first housing, and the second fixing part is connected to the first voice coil and the second voice coil. The second elastic support also includes at least two auxiliary centering supports. Each auxiliary centering support includes an auxiliary fixing part, an auxiliary mounting part, and an auxiliary spring arm part connecting the auxiliary fixing part and the auxiliary mounting part. Each auxiliary fixing part is connected to the third voice coil, and each auxiliary mounting part is connected to the second housing.

6. The sound-generating unit as described in claim 5, characterized in that, The first centering support and the second centering support are provided with pad components, the pad components including a first pad, a second pad, a third pad and a fourth pad, the first pad and the second pad are disposed on the first mounting part, the first voice coil and the second voice coil are connected in series, the lead of the first voice coil is electrically connected to the first pad, and the lead of the second voice coil is electrically connected to the second pad; any two of the auxiliary mounting parts are respectively provided with a third pad and a fourth pad, the third pad and the fourth pad are electrically connected to the lead of the third voice coil.

7. The sound-generating unit as described in any one of claims 1 to 6, characterized in that, The sound-generating unit includes a first working state, in which the first vibration system and the second vibration system radiate sound waves of opposite phases outward.

8. The sound-generating unit as described in claim 7, characterized in that, The sound-generating unit also includes a second operating state, in which the first vibration system and the second vibration system radiate sound waves of the same phase outward.

9. 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 8.

10. The sound-generating module as described in claim 9, 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 first 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.

11. The sound-generating module as described in claim 10, characterized in that, The sound-emitting module has a first mode in which the first sound hole and the second sound hole radiate sound waves of opposite phase outward.

12. The sound-generating module as described in claim 11, characterized in that, The sound-emitting module has a second mode in which the first sound hole and the second sound hole radiate sound waves of the same phase outward.

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