Sound production unit, sound production module and electronic equipment

Abstract

The utility model discloses a sounding unit, a sounding module and an electronic device, and relates to the technical field of sound energy conversion, the sounding unit comprises a magnetic circuit system, a first vibration system and a second vibration system, the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap which are arranged at intervals along the horizontal direction; the first vibration system comprises a first vibrating diaphragm and a first voice coil which are connected with each other, and the first voice coil is arranged corresponding to the first magnetic gap, so that the first voice coil can drive the first vibrating diaphragm to vibrate and produce sound; the second vibration system comprises a second vibrating diaphragm and a second voice coil which are connected with each other, and the second voice coil is arranged corresponding to the second magnetic gap, so that the second voice coil can drive the second vibrating diaphragm to vibrate and produce sound. The first vibration system and the second vibration system share one magnetic circuit system, the thickness of the sound production unit is effectively reduced, the first magnetic gap and the second magnetic gap are arranged at an interval along the horizontal direction, and the thickness of the sound production unit is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sound energy conversion, in particular to a sound unit, a sound module and an electronic device. Background Art

[0002] In recent years, with the rapid development of the field of smart terminal electronics, various electronic devices (such as mobile phones, headphones, tablets, etc.) have gradually shown new trends such as miniaturization, lightness, and intelligence. Consumers are also increasingly demanding speakers in electronic devices, and miniaturization, high performance, and high sound quality speakers are gradually becoming the mainstream demand.

[0003] At present, following the development direction of miniaturization and high performance of speakers, conventional double-sided speakers can no longer continue to improve performance by increasing the size to meet consumer demand, and the miniaturization trend of electronic devices has further compressed the space size of internal speakers, resulting in existing speakers being unable to be installed smoothly due to their large size. Utility Model Content

[0004] The main purpose of the utility model is to provide a sound unit, a sound module and an electronic device, aiming to solve the problem of how to further reduce the size of the double-sided sound unit.

[0005] In order to achieve the above-mentioned purpose, the sound-generating unit proposed in the utility model comprises:

[0006] A magnetic circuit system, wherein the magnetic circuit system is formed with a first magnetic gap and a second magnetic gap spaced apart in a horizontal direction;

[0007] a first vibration system, the first vibration system is located at one side of the magnetic circuit system, the first vibration system comprises a first diaphragm and a first voice coil connected to each other, the first voice coil is arranged corresponding to the first magnetic gap so that the first voice coil can drive the first diaphragm to vibrate and produce sound, and the first diaphragm is a ring-shaped diaphragm;

[0008] The second vibration system is located on the other side of the magnetic circuit system, and the second vibration system includes a second diaphragm and a second voice coil connected to each other, and the second voice coil is arranged corresponding to the second magnetic gap so that the second voice coil can drive the second diaphragm to vibrate and produce sound.

[0009] In one embodiment, the first diaphragm is provided with a first inner fold ring and a first outer fold ring in sequence from the inside to the outside, the first vibration system includes a first dome, the first dome is connected to the first diaphragm, and the first dome is located between the first inner fold ring and the first outer fold ring, and the first voice coil is fixed to the first dome;

[0010] The second diaphragm is provided with a second inner fold ring and a second outer fold ring from the inside to the outside, the second vibration system includes a second dome, the second dome is connected to the second diaphragm, and the second dome is located between the second inner fold ring and the second outer fold ring, and the second voice coil is fixed to the second dome.

[0011] In one embodiment, the first inner fold ring is convexly arranged in a direction away from the second diaphragm, and the first outer fold ring is convexly arranged in a direction toward the second diaphragm; the second inner fold ring is convexly arranged in a direction away from the first diaphragm, and the second outer fold ring is convexly arranged in a direction toward the first diaphragm.

[0012] In one embodiment, the magnetic circuit system includes a magnet assembly, which includes a central magnet, a sub-central magnet, a side magnet, a first secondary magnet and a second secondary magnet. The sub-central magnet surrounds the outer circumference of the central magnet and is spaced to form the second magnetic gap. The side magnets surround the outer circumference of the sub-central magnet and are spaced to form the first magnetic gap. The first secondary magnet and the second secondary magnet are relatively arranged on both sides of the central magnet in a vertical direction. The magnetization direction of the first secondary magnet is opposite to that of the second secondary magnet. The inner periphery of the first diaphragm facing the second diaphragm is connected to the first secondary magnet. The second diaphragm is an annular diaphragm. The inner periphery of the second diaphragm facing the first diaphragm is connected to the second secondary magnet.

[0013] In one embodiment, a first mounting groove is provided on the outer edge of the first secondary magnet, and the inner peripheral edge of the first diaphragm on the side facing the second diaphragm is connected to the bottom wall of the first mounting groove;

[0014] and / or,

[0015] The second diaphragm is an annular diaphragm, a second mounting groove is provided at the outer edge of the second secondary magnet, and an inner peripheral edge of the second diaphragm facing the first diaphragm is connected to the bottom wall of the second mounting groove.

[0016] In one embodiment, the secondary center magnet comprises an annular secondary center magnet;

[0017] and / or,

[0018] The side magnet includes an annular side magnet.

[0019] In one embodiment, the magnetic circuit system also includes a magnetic conductive plate assembly, the magnetic conductive plate assembly includes a first magnetic conductive plate and a second magnetic conductive plate, the side of the center magnet and the sub-center magnet facing the first diaphragm are connected to one side of the first magnetic conductive plate, and the other side of the first magnetic conductive plate is connected to the first secondary magnet; the side of the sub-center magnet and the side magnet away from the first diaphragm are connected to the second magnetic conductive plate.

[0020] In one embodiment, the magnetic conductive plate assembly further includes a third magnetic conductive plate and a side magnetic conductive plate, the third magnetic conductive plate is sandwiched between the second secondary magnet and the center magnet, and the side of the side magnet close to the first diaphragm is connected to the side magnetic conductive plate.

[0021] In one embodiment, the sound generating unit further comprises a first annular mounting frame, the first annular mounting frame is connected to a side of the edge magnetic conductive plate facing the first diaphragm, and an outer edge of the first diaphragm is connected to the first annular mounting frame;

[0022] or,

[0023] The side magnetic conductive plate protrudes toward the direction of the first diaphragm to form a first fixing portion, and the outer edge of the first diaphragm is connected to the first fixing portion;

[0024] or,

[0025] The sound-emitting unit also includes a first annular mounting frame, the edge magnetic conductive plate includes a flat portion and a bent portion that are connected to each other, the side of the edge magnet close to the first diaphragm is connected to the flat portion, the bent portion is arranged on the side of the flat portion close to the first diaphragm and forms an annular bracket together with the first annular mounting frame, and the outer edge of the first diaphragm is connected to the annular bracket.

[0026] In one embodiment, the outer edge of the side magnet protrudes toward the second diaphragm to form a second fixing portion, and the outer edge of the second diaphragm is connected to the second fixing portion;

[0027] or,

[0028] The second magnetic conductive plate protrudes toward the second diaphragm to form a third fixing portion, and the third fixing portion is connected to the outer edge of the second diaphragm;

[0029] or,

[0030] The outer edge of the side magnet protrudes toward the second diaphragm to form a fourth fixing portion, and the sound unit also includes a second annular mounting frame, which is arranged on the inner circumference of the fourth fixing portion, and the outer edge of the second diaphragm is connected to the second annular mounting frame.

[0031] In one embodiment, a dimension of the second secondary magnet in at least one of a first direction and a second direction in a horizontal plane is smaller than a dimension of the central magnet in the corresponding direction.

[0032] In one embodiment, the dimension of the first auxiliary magnet extending in a first direction in a horizontal plane is greater than the dimension of the central magnet extending in the first direction, and the dimension of the first auxiliary magnet extending in a second direction in a horizontal plane is greater than the dimension of the central magnet extending in the second direction.

[0033] In one embodiment, a first avoidance portion is provided at an outer edge of the first secondary magnet.

[0034] and / or,

[0035] A second avoidance portion is provided on the outer edge of the second auxiliary magnet.

[0036] In one embodiment, the sound-emitting unit further includes an isolating member, the isolating member is provided with a plurality of air holes, and the isolating member is disposed around the periphery of the side magnet and is connected to the side magnet.

[0037] In one embodiment,

[0038] The first diaphragm is provided with a first conductive layer, the sound-emitting unit further comprises a first annular mounting frame, the first annular mounting frame is injection-molded with a solder pad, and the first conductive layer is electrically connected to the first voice coil and the solder pad respectively;

[0039] and / or,

[0040] The second diaphragm is provided with a second conductive layer, the sound-emitting unit further comprises a second annular mounting frame, the second annular mounting frame is injection-molded with a soldering pad, and the second conductive layer is electrically connected to the second voice coil and the soldering pad respectively.

[0041] In one embodiment, a height of a top surface of the first diaphragm is not higher than a height of a top surface of the magnetic circuit system.

[0042] In one embodiment, the sound-emitting unit includes a first working state and a second working state. In the first working state, the first vibration system and the second vibration system radiate sound waves of the same phase outwardly; in the second working state, the first vibration system and the second vibration system radiate sound waves of opposite phases outwardly.

[0043] In one embodiment, the first diaphragm and the second diaphragm have the same effective vibration area.

[0044] The utility model also provides a sound module, the sound module comprising a first shell and the above-mentioned sound unit, the first shell can accommodate the sound unit inside, the first shell and the sound unit are enclosed to form a first sound cavity and a second sound cavity that are independent of each other, the first sound cavity and the second sound cavity are respectively arranged corresponding to the first vibration system and the second vibration system, the first shell is provided with a front sound hole connected to the second sound cavity on one side facing the second vibration system, and the side of the first shell is provided with a side sound hole connected to the first sound cavity;

[0045] or,

[0046] The sound module includes a second shell and the above-mentioned sound unit, the second shell can accommodate the sound unit, the second shell and the sound unit are combined to form a first sound cavity and a second sound cavity that are independent of each other, the first sound cavity and the second sound cavity correspond to the first vibration system and the second vibration system respectively, the side of the second shell is provided with a first side sound hole and a second side sound hole, the first side sound hole is connected to the first sound cavity, and the second side sound hole is connected to the second sound cavity.

[0047] In one embodiment, one side of the first shell is in contact with the top surface of the magnetic circuit system, and the inner wall of the first shell is also connected to the side wall of the magnetic circuit system;

[0048] or,

[0049] The top surface of the magnetic circuit system abuts against the inner wall of the second shell, the inner wall of the second shell is also connected to the side of the magnetic circuit system, and the second diaphragm is spaced apart from the inner wall of the second shell.

[0050] The utility model also provides an electronic device, wherein the electronic device includes the above-mentioned sound-emitting unit; or the electronic device includes the above-mentioned sound-emitting module.

[0051] The technical solution of the utility model effectively reduces the thickness of the sound unit by adopting the first vibration system and the second vibration system to share a magnetic circuit system, and the first magnetic gap and the second magnetic gap are arranged at intervals in the horizontal direction, which further reduces the thickness of the sound unit and enables the sound unit to adapt to a smaller installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0053] Figure 1 A structural schematic diagram of an embodiment of a sound module provided by the utility model and equipped with a first housing;

[0054] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0055] Figure 3 A schematic diagram of the exploded structure of an embodiment of a sound module provided by the utility model and equipped with a first housing;

[0056] Figure 4 A schematic cross-sectional structure diagram of an embodiment of a sound module provided by the utility model and equipped with a first housing;

[0057] Figure 5 A schematic cross-sectional structure diagram of another embodiment of a sound module provided by the utility model and equipped with a first housing;

[0058] Figure 6 A structural schematic diagram of an embodiment of a sound module provided by the utility model and equipped with a second housing;

[0059] Figure 7 for Figure 6 A schematic diagram of the structure from another perspective;

[0060] Figure 8 A schematic diagram of the exploded structure of an embodiment of a sound module provided by the utility model and equipped with a second housing;

[0061] Fig. 9 A schematic cross-sectional structure diagram of an embodiment of a sound module provided by the utility model and equipped with a second housing;

[0062] Fig.10 A schematic cross-sectional structure diagram of another embodiment of a sound module provided by the utility model and equipped with a second housing;

[0063] Fig.11 A structural schematic diagram of an embodiment of a sound-generating unit provided by the utility model;

[0064] Fig.12 for Fig.11 A schematic diagram of the structure from another perspective;

[0065] Fig.13 A schematic structural diagram of an embodiment of a first diaphragm provided by the utility model;

[0066] Fig.14 A schematic structural diagram of an embodiment of a second diaphragm provided by the utility model;

[0067] Fig.15This is a structural schematic diagram of an embodiment of the connection between the second auxiliary magnet and the second diaphragm provided by the utility model.

[0068] Description of Figure Numbers:

[0069] 100, sound unit; 1, magnetic circuit system; 11, magnet assembly; 111, center magnet; 112, sub-center magnet; 113, side magnet; 1131, fourth fixing part; 114, first auxiliary magnet; 1141, first mounting groove; 115, second auxiliary magnet; 1151, second mounting groove; 116, first magnetic gap; 117, second magnetic gap; 12, magnetic plate assembly; 121, first magnetic plate; 122, second magnetic plate; 123, third magnetic plate; 124 , side magnetic plate; 2, first vibration system; 21, first diaphragm; 211, first inner fold ring; 212, first outer fold ring; 213, first conductive layer; 22, first voice coil; 23, first dome; 3, second vibration system; 31, second diaphragm; 311, second inner fold ring; 312, second outer fold ring; 313, second conductive layer; 32, second voice coil; 33, second dome; 41, first annular mounting frame; 42, second annular mounting frame; 5, isolation member; 51, air vent;

[0070] 200, sound module; 201, first shell; 2011, front sound hole; 2012, side sound hole; 2013, first upper shell; 20131, first steel sheet; 2014, first lower shell; 2015, cover; 202, second shell; 2021, first side sound hole; 2022, second side sound hole; 2023, second upper shell; 20231, second steel sheet; 2024, second lower shell; 20241, third steel sheet; 203, first sound cavity; 204, second sound cavity.

[0071] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0072] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0073] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0074] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0075] In recent years, with the rapid development of the field of smart terminal electronics, various electronic devices (such as mobile phones, headphones, tablets, etc.) have gradually shown new trends such as miniaturization, lightness, and intelligence. Consumers are also increasingly demanding speakers in electronic devices, and miniaturized, high-performance, and high-quality speakers are gradually becoming the mainstream demand. At present, following the development direction of miniaturization and high performance of speakers, conventional double-sided speakers can no longer continue to improve performance by increasing the size to meet consumer demand, and the miniaturization trend of electronic devices has further compressed the space size of internal speakers, resulting in existing speakers being unable to be installed smoothly due to their large size.

[0076] To this end, the utility model provides a sound generating unit.

[0077] See also Figures 1 to 4In one embodiment of the utility model, the sound unit 100 includes a magnetic circuit system 1, a first vibration system 2 and a second vibration system 3, the first vibration system 2 is located on one side of the magnetic circuit system 1, and the second vibration system 3 is located on the other side of the magnetic circuit system 1, and the magnetic circuit system 1 is formed with a first magnetic gap 116 and a second magnetic gap 117 arranged at intervals in the horizontal direction; the first vibration system 2 includes a first diaphragm 21 and a first voice coil 22 connected to each other, the first voice coil 22 is arranged corresponding to the first magnetic gap 116, that is, the first voice coil 22 is at least partially inserted into the first magnetic gap 116, so that the first voice coil 22 can drive the first diaphragm 21 to vibrate and make sound, and the first diaphragm 21 is an annular diaphragm; the second vibration system 3 includes a second diaphragm 31 and a second voice coil 32 connected to each other, the second voice coil 32 is arranged corresponding to the second magnetic gap 117, that is, the second voice coil 32 is at least partially inserted into the second magnetic gap 117, so that the second voice coil 32 can drive the second diaphragm 31 to vibrate and make sound.

[0078] Among them, the first vibration system 2 and the magnetic circuit system 1 constitute a first sound unit, and the second vibration system 3 and the magnetic circuit system 1 also constitute a second sound unit. Both the first sound unit and the second sound unit can make sound, which increases the total radiation area of ​​the sound unit 100 and improves the performance of the sound unit 100. Moreover, since the first sound unit and the second sound unit share a magnetic circuit system 1, compared with the existing double-sided sound unit 100 using two sets of magnetic circuit structures, the sound unit 100 in this embodiment can be made thinner, and the size of the sound unit 100 in the up and down directions is reduced; and, since the first magnetic gap 116 and the second magnetic gap 117 are arranged at intervals in the horizontal direction, compared with the existing sound unit 100 with two magnetic gaps arranged at intervals in the vertical direction, and the ring diaphragm is used compared with the ordinary diaphragm, the sound unit 100 in this embodiment can be made thinner, so as to better adapt to the use scenario with a smaller installation space, which is conducive to the miniaturization and lightness of the sound unit 100. It should be noted that the first magnetic gap 116 and the second magnetic gap 117 are arranged in a horizontal direction at intervals, which means that the second magnetic gap 117 is located on the inner ring side of the first magnetic gap 116. It should also be noted that the vertical direction is Figure 1 Up and down directions shown.

[0079] See also Figures 3 to 5In one embodiment, the magnetic circuit system 1 includes a magnet assembly 11, and the magnet assembly 11 includes a central magnet 111, a sub-central magnet 112, a side magnet 113, a first secondary magnet 114 and a second secondary magnet 115. The sub-central magnet 112 surrounds the outer periphery of the central magnet 111 and is spaced to form a second magnetic gap 117. The side magnet 113 surrounds the outer periphery of the sub-central magnet 112 and is spaced to form a first magnetic gap 116. The first secondary magnet 114 and the second secondary magnet 115 are relatively arranged on both sides of the central magnet 111 in a vertical direction. The magnetization direction of the first secondary magnet 114 and the magnetization direction of the second secondary magnet 115 are both in the vertical direction, and the magnetization direction of the first secondary magnet 114 is opposite to the magnetization direction of the second secondary magnet 115. The inner periphery of the first diaphragm 21 on the side facing the second diaphragm 31 is connected to the first secondary magnet 114. The second diaphragm 31 is an annular diaphragm. The inner periphery of the second diaphragm 31 on the side facing the first diaphragm 21 is connected to the second secondary magnet 115. In this embodiment, by adding the first secondary magnet 114 and the second secondary magnet 115, the number of magnets in the magnetic circuit system 1 of the sound unit 100 is increased, which helps to improve the performance of the sound unit 100; in addition, taking the first diaphragm 21 as an example, the inner periphery of the first diaphragm 21 abuts against the first secondary magnet 114, which helps to improve the stability of the first diaphragm 21. It should be noted that the magnetization direction of the first secondary magnet 114 is downward, the magnetization direction of the second secondary magnet 115 is upward, the magnetization direction of the center magnet 111 is downward, the magnetization direction of the sub-center magnet 112 is upward, and the magnetization direction of the side magnet 113 is downward.

[0080] In one embodiment, the first diaphragm 21 is provided with a first inner fold ring 211 and a first outer fold ring 212 in sequence from the inside to the outside; the first vibration system 2 includes a first dome 23, the first dome 23 is connected to the first diaphragm 21, and the first dome 23 is located between the first inner fold ring 211 and the first outer fold ring 212, and the first voice coil 22 is fixed to the first dome 23; the second diaphragm 31 is provided with a second inner fold ring 311 and a second outer fold ring 312 in sequence from the inside to the outside, the second vibration system 3 includes a second dome 33, the second dome 33 is connected to the second diaphragm 31, and the second dome 33 is located between the second inner fold ring 311 and the second outer fold ring 312, and the second voice coil 32 is fixed to the second dome 33. Among them, taking the first dome 23 as an example, the first dome 23 is bonded to the flat area between the first inner fold ring 211 and the first outer fold ring 212. The first dome 23 can be located on the upper side of the first diaphragm 21 or on the lower side of the first diaphragm 21. When the first dome 23 is located on the upper side of the first diaphragm 21, one side of the first diaphragm 21 is connected to the first voice coil 22, and the other side of the first diaphragm 21 is connected to the first dome 23, thereby realizing that the first voice coil 22 is fixed to the first dome 23; when the first dome 23 is located on the lower side of the first diaphragm 21, one side of the first dome 23 is connected to the first diaphragm 21, and the other side of the first dome 23 is connected to the first voice coil 22, thereby ensuring that the first voice coil 22 can be within the radiation range of the first dome 23; the second dome 33 is similar to the first dome 23 in terms of its configuration, and will not be repeated here.

[0081] In one embodiment, the first inner fold ring 211 is convexly arranged in a direction away from the second diaphragm 31, and the first outer fold ring 212 is convexly arranged in a direction toward the second diaphragm 31; the second inner fold ring 311 is convexly arranged in a direction away from the first diaphragm 21, and the second outer fold ring 312 is convexly arranged in a direction toward the first diaphragm 21. At present, the existing ordinary diaphragms generally only have an annular protrusion on the outer circle. In the present embodiment, taking the first diaphragm 21 as an example, the first diaphragm 21 has a first inner fold ring 211 and a first outer fold ring 212, wherein the first inner fold ring 211 is arranged close to the first secondary magnet 114 and protrudes upward, which can not only reduce the probability of collision between the first secondary magnet 114 and the first diaphragm 21, but also because the first inner fold ring 211 is protruding upward, a space for placing more magnets is reserved between the first diaphragm 21 and the center magnet 111, that is, the existence of the first inner fold ring 211 increases the volume of the first secondary magnet 114 without changing the thickness of the sound unit 100, thereby improving the performance of the sound unit 100; the effect produced by arranging the second inner fold ring 311 on the second diaphragm 31 is similar to that, which will not be described one by one here.

[0082] According to an embodiment of the utility model, the size and shape of the first diaphragm 21 and the second diaphragm 31 are different, and the size and shape of the first dome 23 and the second dome 33 are different, wherein the size and shape of the first diaphragm 21 and the second diaphragm 31 are different, on the one hand, so that the first diaphragm 21 can be adapted to the size of the first secondary magnet 114, and the second diaphragm 31 can be adapted to the size of the second secondary magnet 115, so as to effectively utilize the space, and on the other hand, so that the effective vibration area of ​​the first diaphragm 21 can be equal to the effective vibration area of ​​the second diaphragm 31. It should be noted that the effective vibration area refers to the effective vibration area of ​​the drum paper / diaphragm during the vibration of the sound unit.

[0083] See also Figure 5 , Fig.10 and Fig.15 In one embodiment, a first mounting groove 1141 is provided at an outer edge of the first secondary magnet 114, and an inner peripheral edge of the first diaphragm facing the second diaphragm 31 is connected to a bottom wall of the first mounting groove 1141; and / or, the second diaphragm 31 is an annular diaphragm, and a second mounting groove 1151 is provided at an outer edge of the second secondary magnet 115, and an inner peripheral edge of the second diaphragm 31 facing the first diaphragm 21 is connected to a bottom wall of the second mounting groove 1151. Among them, taking the first mounting groove 1141 as an example, by setting the first mounting groove 1141, a part of the first secondary magnet 114 can protrude through the inner circle of the first diaphragm 21, thereby effectively increasing the volume of the first secondary magnet 114, thereby improving the performance of the sound unit 100, and by setting the first mounting groove 1141, the vibration space of the first diaphragm 21 can be avoided, reducing the probability of interference between the first diaphragm 21 and the first secondary magnet 114; in addition, by setting the first mounting groove 1141, the inner periphery of the first diaphragm 21 is sealed and connected to the bottom wall of the first mounting groove 1141, thereby playing a certain waterproof role; wherein, the effect produced by setting the second mounting groove 1151 is similar to that of the first mounting groove 1141, and will not be repeated here. It should be noted that the first mounting groove 1141 and the second mounting groove 1151 are both annular mounting grooves. It should also be noted that the size of the portion of the first secondary magnet 114 protruding from the inner circle of the first diaphragm 21 is adapted to the size of the inner circle of the first diaphragm 21 . Similarly, the size of the portion of the second secondary magnet 115 protruding from the inner circle of the second diaphragm 31 is adapted to the size of the inner circle of the second diaphragm 31 .

[0084] See also Figure 5 and Fig.10According to an embodiment of the present invention, the inner periphery of the second diaphragm 31 facing the first diaphragm 21 is connected to the bottom surface of the magnetic circuit system 1. The bottom surface of the magnetic circuit system 1 is located above the second diaphragm 31, that is, the bottom surface of the magnetic circuit system 1 does not extend from the inner circle of the second diaphragm 31, which makes the inner circle opening of the second diaphragm 31 not too large, ensuring the strength of the second diaphragm 31.

[0085] In one embodiment, the sub-center magnet 112 includes an annular sub-center magnet; and / or the side magnet 113 includes an annular side magnet. The annular sub-center magnet 112 is larger in volume than two spaced bar magnets, thus improving the performance of the sound unit 100; the annular side magnet 113 can further improve the performance of the sound unit 100 compared to two bar magnets.

[0086] According to an embodiment of the present invention, the secondary center magnet 112 and the side magnet 113 may be folded edge magnets or two bar magnets, which have lower costs than ring magnets.

[0087] See also Figures 8 to 10 In one embodiment, the magnetic circuit system 1 also includes a magnetic conductive plate assembly 12, the magnetic conductive plate assembly 12 includes a first magnetic conductive plate 121 and a second magnetic conductive plate 122, the side of the center magnet 111 and the sub-center magnet 112 facing the first diaphragm 21 are connected to one side of the first magnetic conductive plate 121, and the other side of the first magnetic conductive plate 121 is connected to the first secondary magnet 114; the side of the sub-center magnet 112 and the side magnet 113 away from the first diaphragm 21 are connected to the second magnetic conductive plate 122. By setting a first magnetic conductive plate 121 to connect the central magnet 111 and the sub-central magnet 112, the central magnet 111 and the sub-central magnet 112 are allowed to pass through the magnetic conductivity of the first magnetic conductive plate 121 to ensure the magnetic flux of the second magnetic gap 117, thereby making the sound emitted by the sound unit 100 more accurate. Similarly, by setting a second magnetic conductive plate 122 to connect the sub-central magnet 112 and the side magnet 113, the sub-central magnet 112 and the side magnet 113 are allowed to pass through the magnetic conductivity of the second magnetic conductive plate 122 to ensure the magnetic flux of the first magnetic gap 116, thereby making the sound emitted by the sound unit 100 more accurate.

[0088] In one embodiment, the magnetic conductive plate assembly 12 further includes a third magnetic conductive plate 123 and a side magnetic conductive plate 124. The third magnetic conductive plate 123 is sandwiched between the second secondary magnet 115 and the center magnet 111. The side of the side magnet 113 close to the first diaphragm 21 is connected to the side magnetic conductive plate 124. By setting the third magnetic conductive plate 123 sandwiched between the center magnet 111 and the second secondary magnet 115, the second secondary magnet 115 and the center magnet 111 can conduct magnetism through the third magnetic conductive plate 123 to ensure the magnetic flux of the second magnetic gap 117. By setting the side magnetic conductive plate 124 connected to the side magnet 113, the side magnet 113 can conduct magnetism through the side magnetic conductive plate 124 to ensure the magnetic flux of the first magnetic gap 116.

[0089] See also Figure 8 , Fig.11 and Fig.12 In one embodiment, the sound unit 100 also includes a first annular mounting frame 41, which is connected to the side of the edge magnetic conductive plate 124 facing the first diaphragm 21, and the outer edge of the first diaphragm 21 is connected to the first annular mounting frame 41; or, the edge magnetic conductive plate 124 protrudes toward the direction of the first diaphragm 21 to form a first fixed portion, and the outer edge of the first diaphragm 21 is connected to the first fixed portion; or, the sound unit 100 also includes a first annular mounting frame 41, the edge magnetic conductive plate 124 includes a flat plate portion and a bent portion that are connected to each other, the side of the edge magnet 113 close to the first diaphragm 21 is connected to the flat plate portion, the bent portion is arranged on the side of the flat plate portion close to the first diaphragm 21 and forms an annular bracket together with the first annular mounting frame 41, and the outer edge of the first diaphragm 21 is connected to the annular bracket. Among them, the outer edge of the first diaphragm 21 is fixed by setting a first annular mounting frame 41, thereby improving the stability of the first diaphragm 21; or the first fixing portion is formed by the side magnetic conductive plate 124 protruding upward, the first fixing portion is an annular fixing portion, and the outer edge of the first diaphragm 21 is connected to the first fixing portion, thereby improving the stability of the first diaphragm 21; or the side magnetic conductive plate 124 is provided with a bending portion, the bending portion and the first annular mounting frame 41 together form an annular bracket, and the outer edge of the first diaphragm 21 is connected to the annular bracket, thereby improving the stability of the first diaphragm 21. According to an embodiment of the utility model, the outer edge of the first diaphragm 21 is connected to the first annular mounting frame 41, thereby improving the stability of the first diaphragm 21.

[0090] According to another embodiment of the present invention, the outer edge of the first diaphragm 21 is connected to the bent portion, thereby improving the stability of the first diaphragm 21 .

[0091] In one embodiment, the outer edge of the side magnet 113 protrudes toward the second diaphragm 31 to form a second fixed portion, and the outer edge of the second diaphragm 31 is connected to the second fixed portion; or, the second magnetic conductive plate 122 protrudes toward the second diaphragm 31 to form a third fixed portion, and the third fixed portion is connected to the outer edge of the second diaphragm 31; or, the outer edge of the side magnet 113 protrudes toward the second diaphragm 31 to form a fourth fixed portion 1131, and the sound unit 100 also includes a second annular mounting frame 42, which is arranged on the inner circumference of the fourth fixed portion 1131, and the outer edge of the second diaphragm 31 is connected to the second annular mounting frame 42. Among them, the outer edge of the side magnet 113 protrudes downward to form a second fixing part, which can not only be used to fix the outer edge of the second diaphragm 31, but also because the side magnet 113 protrudes downward, the volume of the side magnet 113 increases, thereby improving the performance of the sound unit 100; or the second magnetic conductive plate 122 protrudes downward to form a third fixing part, and the third fixing part is connected to the outer edge of the second diaphragm 31, thereby improving the stability of the second diaphragm 31; or the side magnet 113 protrudes downward to form a fourth fixing part 1131, and the second annular mounting frame 42 is arranged on the inner side of the fourth fixing part 1131. The fourth fixing part 1131 can not only limit the second annular mounting frame 42, but more importantly, it can also effectively improve the performance of the sound unit 100, and the second mounting frame is connected to the outer edge of the second diaphragm 31, thereby improving the stability of the second diaphragm 31. It should be noted that the first annular mounting frame 41 and the second annular mounting frame 42 are both plastic frames, which avoid the risk of short circuit caused by the conduction of the frame itself compared to the metal frame.

[0092] In one embodiment, the size of the second secondary magnet 115 in at least one of the first direction and the second direction in the horizontal plane is smaller than the size of the central magnet 111 in the corresponding direction. The first direction may be the width direction of the sound unit 100, and the second direction may be the length direction of the sound unit 100. The size of the second secondary magnet 115 in at least one of the first direction and the second direction is smaller than the size of the central magnet 111, mainly to avoid the vibration space of the second diaphragm 31. It should be noted that the first direction is Figure 1 The left and right directions shown, the second direction is Figure 1 Front-to-back orientation shown.

[0093] In one embodiment, the dimension of the first secondary magnet 114 extending in the first direction in the horizontal plane is larger than the dimension of the central magnet 111 extending in the first direction, and the dimension of the first secondary magnet 114 extending in the second direction in the horizontal plane is larger than the dimension of the central magnet 111 extending in the second direction. The dimension of the first secondary magnet 114 in the first direction and the second direction is larger than the dimension of the central magnet 111 so that the first secondary magnet 114 can act on the first magnetic gap 116 and the second magnetic gap 117 at the same time, thereby effectively improving the performance of the sound unit 100.

[0094] In one embodiment, the first secondary magnet 114 is provided with a first avoidance portion, and / or the second secondary magnet 115 is provided with a second avoidance portion. The first avoidance portion is provided on the first secondary magnet 114 to avoid the vibration space of the first diaphragm 21, and the second avoidance portion is provided on the second secondary magnet 115 to avoid the vibration space of the second diaphragm 31. It should be noted that the first avoidance portion and the second avoidance portion can be cut corners or avoidance grooves.

[0095] In one embodiment, the sound unit 100 further includes an isolator 5, the isolator 5 is provided with a plurality of air holes 51, and the isolator 5 is arranged around the periphery of the side magnet 113 and connected to the side magnet 113. By arranging the isolator 5 around the periphery of the side magnet 113, the sound-absorbing particles are isolated from the sound unit, and the sound-absorbing particles are prevented from entering the sound unit and affecting the sound quality of the sound unit. It should be noted that, since the aperture of the air holes 51 is smaller than the particle size of the sound-absorbing particles, the isolator 5 can prevent the sound-absorbing particles from passing through the isolator 5 and entering the interior of the sound unit while ensuring gas circulation.

[0096] See also Figure 13 to Figure 14In one embodiment, the first diaphragm 21 is provided with a first conductive layer 213, the sound unit 100 includes a first annular mounting frame 41, the first annular mounting frame 41 is injection molded with a pad, and the first conductive layer 213 is electrically connected to the first voice coil 22 and the pad respectively; and / or, the second diaphragm 31 is provided with a second conductive layer 313, the sound unit 100 includes a second annular mounting frame 42, the second annular mounting frame 42 is injection molded with a pad, and the second conductive layer 313 is electrically connected to the second voice coil 32 and the pad respectively. By electrically connecting the conductive layers to the corresponding voice coils and pads respectively, compared with ordinary diaphragms, the conductive support sheet used for electrically connecting to the voice coil is omitted, thereby saving space inside the sound unit 100, which helps to reduce the size of the sound unit 100; and the saved space can also be used to fill more magnets, which helps to improve the performance of the sound unit 100. It should be noted that the first conductive layer 213 and the second conductive layer 313 may be conductive adhesive layers, and the conductive adhesive is applied on the first diaphragm 21A to form the first conductive layer 213. It should be noted that the first conductive layer 213 and the second conductive layer 313 may be conductive adhesive layers, and the conductive adhesive is applied on the first diaphragm 21A to form the first conductive layer 213, and similarly, the conductive adhesive is applied on the second diaphragm 31A to form the second conductive layer 313.

[0097] See also Figures 1 to 5 The utility model further proposes a sound module 200, which includes a first shell 201 and the above-mentioned sound unit 100. The first shell 201 can accommodate the sound unit 100. The first shell 201 and the sound unit 100 are enclosed to form a first sound cavity 203 and a second sound cavity 204 that are independent of each other. The first sound cavity 203 and the second sound cavity 204 are respectively arranged corresponding to the first diaphragm 21 and the second diaphragm 31. The first shell 201 is provided with a front sound hole 2011 that is connected to the second sound cavity 204 on one side facing the second vibration system 3, and the side of the first shell 201 is provided with a side sound hole 2012 that is connected to the first sound cavity 203; or, please refer to Figures 6 to 10The sound unit 100 also includes a second shell 202, and the second shell 202 can accommodate the sound unit 100. The second shell 202 and the sound unit 100 are enclosed to form a first sound cavity 203 and a second sound cavity 204 that are independent of each other. The first sound cavity 203 and the second sound cavity 204 are respectively arranged corresponding to the first diaphragm 21 and the second diaphragm 31. The side of the second shell 202 is provided with a first side sound hole 2021 and a second side sound hole 2022. The first side sound hole 2021 is connected to the first sound cavity 203, and the second side sound hole 2022 is connected to the second sound cavity 204. By using the first shell 201, the sound unit 100 can be adapted to the applicable scenarios with front sound outlet pipes and side sound outlet pipes. Taking a mobile phone as an example, if it is not an ultra-thin mobile phone, the frame is generally provided with a front cavity channel that can accommodate a part of the sound unit 100 structure, which makes the structure of the sound unit 100 larger, so that the sound unit 100 has better performance, and the front sound plus side sound mode has a higher front cavity height enclosed by the sound module 200 of the first shell 201 and the middle frame than the speaker with two side sound holes. This results in a lower equivalent mass of the vibration system of the sound module 200 using the first shell 201, which in turn results in a larger resonance frequency F0 of the sound module 200 using the first shell 201. In layman's terms, the front cavity resonance peak of the sound module 200 using the first shell 201 is further back. The resonance frequency F0 of group 200 is relatively large, so it is less likely for users to hear harsh noises, so the listening experience will be better; the second shell 202 is used to achieve double-sided sound, so that the sound unit 100 can not only meet the needs of the double-sided sound usage scenario, that is, the sound unit 100 can adapt to the ultra-thin whole machine structure with only side sound outlet pipes, but also eliminates the front cover component compared to the sound unit structure of front sound outlet and side sound outlet, so that the overall thickness of the sound unit 100 can be made thinner, and because it is double-sided sound outlet, the sound cavity and the sound hole can be designed to extend in the horizontal direction, compared with the sound cavity and the sound hole extending in the vertical direction, the thickness of the double-sided sound unit 100 can be made thinner. Taking the mobile phone as an example, for an ultra-thin mobile phone, the installation space of the sound unit 100 is limited. Therefore, the double-sided sound unit 100 can better adapt to the usage needs of this scenario. It should be noted that, taking the first shell 201 as an example, the first shell 201 is connected to the side of the sound unit 100 to form a first sound cavity 203 and a second sound cavity 204 respectively. The first shell 201 can be connected to the first annular mounting frame 41 to form the first sound cavity 203, or the first shell 201 can be connected to the magnetic circuit system 1 to form the first sound cavity 203. Similarly, the first shell 201 can be connected to the isolation member 5 to form the second sound cavity 204, or the first object module 201 can be connected to the magnetic circuit system 1 to form the second sound cavity 204.

[0098] In one embodiment, the inner wall of the first shell 201 abuts against the top surface of the magnetic circuit system 1, and the inner wall of the first shell 201 is also connected to the side of the magnetic circuit system 1, and the height of the top surface of the first diaphragm 21 is not higher than the height of the top surface of the magnetic circuit system 1, so that the first shell 201 and the magnetic circuit system 1 form a first sound cavity 203; or, the top surface of the magnetic circuit system 1 abuts against the inner wall of the second shell 202, the bottom surface of the magnetic circuit system 1 can abut against the second diaphragm 31, and the side of the second diaphragm 31 away from the magnetic circuit system 1 can abut against the inner wall of the second shell 202, and the inner wall of the second shell 202 is also connected to the side of the magnetic circuit system 1, the height of the top surface of the first diaphragm 21 is not higher than the height of the top surface of the magnetic circuit system 1, and the second diaphragm 31 is spaced apart from the inner wall of the second shell 202, so that the second shell 202 and the magnetic circuit system 1 form a first sound cavity 203 and a second sound cavity 204. The inner wall of the first shell 201 abuts against the top surface of the magnetic circuit system 1, and the inner wall of the first shell 201 is also connected to the side of the magnetic circuit system 1, thereby improving the stability of the magnetic circuit system 1; the height of the top surface of the first diaphragm 21 is not higher than the height of the top surface of the magnetic circuit system 1, ensuring that the first diaphragm 21 has a vibration space, so that the first shell 201 and the magnetic circuit system 1 form a first sound cavity 203; the top surface and bottom surface of the magnetic circuit system 1 are both abutted against the inner wall of the second shell 202, and the inner wall of the second shell 202 is also connected to the side of the magnetic circuit system 1, thereby improving the stability of the magnetic circuit system 1; the second diaphragm 31 is spaced apart from the inner wall of the second shell 202, ensuring that the second diaphragm 31 has a vibration space.

[0099] According to one embodiment of the utility model, the first shell 201 is embedded with a first steel sheet 20131, which protrudes downward and abuts against the first secondary magnet 114, which helps to improve the stability of the magnetic circuit system 1; the second shell 202 is provided with a second steel sheet 20231 and a third steel sheet 20241 corresponding to the first secondary magnet 114 and the second secondary magnet 115, respectively, the second steel sheet 20231 protrudes downward and abuts against the first secondary magnet 114, and the second steel sheet 20231 protrudes upward and abuts against the second secondary magnet 115, which helps to improve the stability of the magnetic circuit system 1.

[0100] According to another embodiment of the utility model, the first shell 201 includes a detachably connected first upper shell 2013, a first lower shell 2014 and a cover 2015, the cover 2015 is used to cover the second diaphragm 31, and the cover 2015 is provided with a positive sound hole 2011. When the sound unit 100 is applied to a mobile phone, the cover 2015 is used to abut against the middle frame of the mobile phone, and can also play a certain protective role on the second diaphragm 31. The first upper shell 2013 is also provided with a side sound hole 2012. The first upper shell 2013 and the first lower shell 2014 are surrounded by a magnetic circuit system 1, a first vibration system 2 and a second The accommodating cavity of the vibration system 3, the first upper shell 2013 is provided with a first steel sheet 20131; the second shell 202 includes a second upper shell 2023 and a second lower shell 2024 which are detachably connected, the second upper shell 2023 is provided with a second steel sheet 20231, the second upper shell 2023 is provided with a first side sound hole 2021, the second lower shell 2024 is provided with a third steel sheet 20241, the second lower shell 2024 is provided with a second side sound hole 2022, the second upper shell 2023 and the second lower shell 2024 form a accommodating cavity which can accommodate the magnetic circuit system 1, the first vibration system 2 and the second vibration system 3.

[0101] In one embodiment, the sound unit 100 includes a first working state and a second working state. In the first working state, the first vibration system 2 and the second vibration system 3 radiate sound waves of the same phase outwardly; in the second working state, the first vibration system 2 and the second vibration system 3 radiate sound waves of opposite phases outwardly. In the first working state, the first vibration system 2 and the second vibration system 3 radiate sound waves of the same phase outwardly, thereby improving the sound quality of the sound unit 100; in the second working state, the first vibration system 2 and the second vibration system 3 radiate sound waves of opposite phases outwardly, so that the sound unit 100 can be applied to electronic devices with call privacy to achieve better low leakage effect.

[0102] In one embodiment, the first diaphragm 21 and the second diaphragm 31 have the same effective vibration area. The first diaphragm 21 and the second diaphragm 31 having the same effective vibration area can further reduce the leakage effect and improve the privacy of the call when the sound unit 100 is applied to an electronic device with call privacy. It should be noted that the first sound unit and the second sound unit have the same or similar TS parameters and performance.

[0103] In one embodiment, the height of the top surface of the first diaphragm 21 is not higher than the height of the top surface of the magnetic circuit system 1. On the one hand, it ensures that the first diaphragm 21 has sufficient vibration space; on the other hand, the performance of the sound unit 100 can be improved by increasing the top surface height of the magnetic circuit system 1.

[0104] The utility model also proposes an electronic device, the electronic device includes the above-mentioned sound unit 100; or, the electronic device includes the above-mentioned sound module 200. The electronic device can be a wearable electronic device, such as a watch. In addition, the electronic device can also be a headset, a mobile phone, a bracelet, a laptop computer, a VR (English name: Virtual Reality, Chinese name: Virtual Reality) device or an AR (English name: Augmented Reality, Chinese name: Augmented Reality) device, etc. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0105] The above are only exemplary embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sound unit, characterized in that: include A magnetic circuit system, wherein the magnetic circuit system is formed with a first magnetic gap and a second magnetic gap spaced apart in a horizontal direction; a first vibration system, the first vibration system is located at one side of the magnetic circuit system, the first vibration system comprises a first diaphragm and a first voice coil connected to each other, the first voice coil is arranged corresponding to the first magnetic gap so that the first voice coil can drive the first diaphragm to vibrate and produce sound, and the first diaphragm is a ring-shaped diaphragm; The second vibration system is located on the other side of the magnetic circuit system, and the second vibration system includes a second diaphragm and a second voice coil connected to each other, and the second voice coil is arranged corresponding to the second magnetic gap so that the second voice coil can drive the second diaphragm to vibrate and produce sound.

2. The sound generating unit according to claim 1, characterized in that: The first diaphragm is provided with a first inner fold ring and a first outer fold ring in sequence from the inside to the outside, the first vibration system includes a first spherical top, the first spherical top is connected to the first diaphragm, and the first spherical top is located between the first inner fold ring and the first outer fold ring; The second diaphragm is provided with a second inner fold ring and a second outer fold ring in sequence from the inside to the outside, and the second vibration system includes a second spherical top, the second spherical top is connected to the second diaphragm, and the second spherical top is located between the second inner fold ring and the second outer fold ring.

3. The sound generating unit according to claim 2, characterized in that: The first inner fold ring is convexly arranged in a direction away from the second diaphragm, and the first outer fold ring is convexly arranged in a direction toward the second diaphragm; the second inner fold ring is convexly arranged in a direction away from the first diaphragm, and the second outer fold ring is convexly arranged in a direction toward the first diaphragm.

4. The sound generating unit according to claim 1, characterized in that: The magnetic circuit system includes a magnet assembly, which includes a central magnet, a sub-central magnet, a side magnet, a first secondary magnet and a second secondary magnet. The sub-central magnet surrounds the outer circumference of the central magnet and is spaced to form the second magnetic gap. The side magnets surround the outer circumference of the sub-central magnet and are spaced to form the first magnetic gap. The first secondary magnet and the second secondary magnet are relatively arranged on both sides of the central magnet in a vertical direction. The magnetization direction of the first secondary magnet is opposite to that of the second secondary magnet. The inner periphery of the first diaphragm facing the second diaphragm is connected to the first secondary magnet. The second diaphragm is an annular diaphragm. The inner periphery of the second diaphragm facing the first diaphragm is connected to the second secondary magnet.

5. The sound generating unit according to claim 4, characterized in that: A first mounting groove is provided on the outer edge of the first secondary magnet, and the inner peripheral edge of the first diaphragm on the side facing the second diaphragm is connected to the bottom wall of the first mounting groove; and / or, The second diaphragm is an annular diaphragm, a second mounting groove is provided at the outer edge of the second secondary magnet, and an inner peripheral edge of the second diaphragm facing the first diaphragm is connected to the bottom wall of the second mounting groove.

6. The sound generating unit according to claim 4, characterized in that: The secondary center magnet comprises an annular secondary center magnet; and / or, The side magnet includes an annular side magnet.

7. The sound generating unit according to claim 4, characterized in that: The magnetic circuit system also includes a magnetic conductive plate assembly, which includes a first magnetic conductive plate and a second magnetic conductive plate. The side of the central magnet and the sub-central magnet facing the first diaphragm are both connected to one side of the first magnetic conductive plate, and the other side of the first magnetic conductive plate is connected to the first secondary magnet; the side of the sub-central magnet and the side magnet away from the first diaphragm are both connected to the second magnetic conductive plate.

8. The sound generating unit according to claim 7, characterized in that: The magnetic conductive plate assembly further includes a third magnetic conductive plate and a side magnetic conductive plate. The third magnetic conductive plate is sandwiched between the second secondary magnet and the center magnet. The side of the side magnet close to the first diaphragm is connected to the side magnetic conductive plate.

9. The sound generating unit according to claim 8, characterized in that: The sound generating unit further comprises a first annular mounting frame, the first annular mounting frame is connected to a side of the edge magnetic conductive plate facing the first diaphragm, and the outer edge of the first diaphragm is connected to the first annular mounting frame; or, The side magnetic conductive plate protrudes toward the direction of the first diaphragm to form a first fixing portion, and the outer edge of the first diaphragm is connected to the first fixing portion; or, The sound-emitting unit also includes a first annular mounting frame, the edge magnetic conductive plate includes a flat portion and a bent portion that are connected to each other, the side of the edge magnet close to the first diaphragm is connected to the flat portion, the bent portion is arranged on the side of the flat portion close to the first diaphragm and forms an annular bracket together with the first annular mounting frame, and the outer edge of the first diaphragm is connected to the annular bracket.

10. The sound generating unit according to claim 7, characterized in that: The outer edge of the side magnet protrudes toward the second diaphragm to form a second fixing portion, and the outer edge of the second diaphragm is connected to the second fixing portion; or, The second magnetic conductive plate protrudes toward the second diaphragm to form a third fixing portion, and the third fixing portion is connected to the outer edge of the second diaphragm; or, The outer edge of the side magnet protrudes toward the second diaphragm to form a fourth fixing portion, and the sound unit also includes a second annular mounting frame, which is arranged on the inner circumference of the fourth fixing portion, and the outer edge of the second diaphragm is connected to the second annular mounting frame.

11. The sound generating unit according to claim 4, characterized in that: The dimension of the second secondary magnet in at least one of the first direction and the second direction in a horizontal plane is smaller than the dimension of the central magnet in the corresponding direction.

12. The sound generating unit according to claim 4, characterized in that: The dimension of the first auxiliary magnet extending in a first direction in a horizontal plane is greater than the dimension of the central magnet extending in the first direction, and the dimension of the first auxiliary magnet extending in a second direction in a horizontal plane is greater than the dimension of the central magnet extending in the second direction.

13. The sound generating unit according to claim 4, characterized in that: The outer edge of the first secondary magnet is provided with a first avoidance portion, and / or, A second avoidance portion is provided on the outer edge of the second auxiliary magnet.

14. The sound generating unit according to claim 4, characterized in that: The sound-generating unit further includes an isolating member, the isolating member is provided with a plurality of air holes, and the isolating member is disposed around the periphery of the side magnet and is connected to the side magnet.

15. The sound generating unit according to any one of claims 1 to 8, characterized in that: The first diaphragm is provided with a first conductive layer, the sound-emitting unit further comprises a first annular mounting frame, the first annular mounting frame is injection-molded with a pad, and the first conductive layer is electrically connected to the first voice coil and the pad respectively; and / or, The second diaphragm is provided with a second conductive layer, the sound-emitting unit further comprises a second annular mounting frame, the second annular mounting frame is injection-molded with a soldering pad, and the second conductive layer is electrically connected to the second voice coil and the soldering pad respectively.

16. The sound generating unit according to any one of claims 1 to 14, characterized in that: The height of the top surface of the first diaphragm is not higher than the height of the top surface of the magnetic circuit system.

17. The sound generating unit according to any one of claims 1 to 14, characterized in that: The sound-emitting unit includes a first working state and a second working state. In the first working state, the first vibration system and the second vibration system radiate sound waves of the same phase outwardly; in the second working state, the first vibration system and the second vibration system radiate sound waves of opposite phases outwardly.

18. The sound generating unit according to any one of claims 1 to 14, characterized in that: The first diaphragm and the second diaphragm have the same effective vibration area.

19. A sound module, characterized in that: The sound module comprises a first shell and a sound unit according to any one of claims 1 to 18, the first shell can accommodate the sound unit, the first shell and the sound unit are enclosed to form a first sound cavity and a second sound cavity which are independent of each other, the first sound cavity and the second sound cavity are respectively arranged corresponding to the first vibration system and the second vibration system, a front sound hole connected to the second sound cavity is provided on a side of the first shell facing the second vibration system, and a side sound hole connected to the first sound cavity is provided on a side of the first shell; or, The sound module includes a second shell and a sound unit as described in any one of claims 1 to 18, the second shell can accommodate the sound unit, the second shell and the sound unit are combined to form a first sound cavity and a second sound cavity that are independent of each other, the first sound cavity and the second sound cavity correspond to the first vibration system and the second vibration system respectively, the side of the second shell is provided with a first side sound hole and a second side sound hole, the first side sound hole is connected to the first sound cavity, and the second side sound hole is connected to the second sound cavity.

20. The sound module according to claim 19, characterized in that: One side of the first shell is in contact with the top surface of the magnetic circuit system, and the inner wall of the first shell is also connected to the side wall of the magnetic circuit system; or, The top surface of the magnetic circuit system abuts against the inner wall of the second shell, the inner wall of the second shell is also connected to the side of the magnetic circuit system, and the second diaphragm is spaced apart from the inner wall of the second shell.

21. An electronic device, characterized in that: The electronic device comprises the sound unit as described in any one of claims 1 to 18; or, the electronic device comprises the sound module as described in claim 19 or 20.

Images