Sound production unit and sound production module

Abstract

The present invention relates to the technical field of electroacoustics. Disclosed are a sound production unit and a sound production module. The sound production unit comprises a housing, a magnetic circuit system and a vibration system, wherein the housing has a plurality of accommodating spaces distributed in a second direction; the magnetic circuit system correspondingly comprises a plurality of magnetic circuit units, and each magnetic circuit unit comprises a first magnetic assembly having a first magnetic gap and a second magnetic assembly having a second magnetic gap, which are spaced apart in a first direction; and the vibration system correspondingly comprises a plurality of vibration units, each vibration unit is arranged between the first magnetic assembly and the second magnetic assembly of a corresponding magnetic circuit unit, each vibration unit comprises a diaphragm and a voice coil, the voice coil comprises a first voice coil portion and a second voice coil portion, the first voice coil portion is located in the first magnetic gap, the second voice coil portion is located in the second magnetic gap, and in a first working state, at least one vibration unit and the remaining at least one vibration unit respectively radiate sound waves having opposite phases outwards. The sound production unit of the present invention can achieve a light-weight and thin design, and has the technical effect of far-field silencing.

Description

Sound emitting monomer and sound emitting module TECHNICAL FIELD

[0001] The present application relates to the technical field of electroacoustics, in particular to a sound emitting monomer and a sound emitting module. BACKGROUND

[0002] At present, portable intelligent devices are increasingly thin and light, especially folding products, therefore, terminal devices have higher and higher requirements for ultra-thin micro sound emitting modules, such as loudspeaker modules.

[0003] A conventional DPS (Digital Signal Processing) loudspeaker integrates two sets of vibration systems together through a shared magnetic circuit, both sets of vibration systems need to reserve upper vibration space and sound outlet pipeline at the end of the whole machine, and both sets of vibration systems have two sets of diaphragms, each set of diaphragm needs two vibration spaces, i.e., upper vibration space and lower vibration space, and two sets of diaphragms need four vibration spaces, which occupies a large thickness space of the DPS product. When the thickness of the DPS product is reduced, in order to maintain the performance under the EQ (Equalizer) of the product, i.e., to maintain the product at low frequency, increase the input voltage of the loudspeaker, push the displacement of each frequency point of the loudspeaker to Xmax, so as to maximize the performance of the product, the product and the end of the whole machine need to reserve larger vibration space, therefore, only the magnet, the dust shield and the yoke in the magnetic circuit unit can be thinned. However, the fragmentation rate of the too thin magnetic circuit unit is high during transportation, cleaning and magnetization, which leads to a sharp rise in material cost, and because the magnet, the dust shield and the yoke in the magnetic circuit unit are thinned to different degrees, the risk of drop damage of the product is increased, the reliability and yield of the product are also greatly reduced, and mass production cannot be completed. SUMMARY

[0004] The main purpose of the present application is to provide a sound emitting monomer and a sound emitting module which can realize thin and light design and have the technical effect of far-field noise elimination.

[0005] To achieve the above purpose, the present application provides a sound emitting monomer, which comprises:

[0006] A shell having a plurality of accommodation spaces distributed along a second direction;

[0007] A magnetic circuit system comprising a plurality of magnetic circuit units, each of the accommodation spaces accommodating one of the magnetic circuit units, each of the magnetic circuit units comprising a first magnetic assembly and a second magnetic assembly arranged at intervals along a first direction, the second direction being perpendicular to the first direction, the first magnetic assembly having a first magnetic gap, and the second magnetic assembly having a second magnetic gap;

[0008] The vibration system comprises a plurality of vibration units, each of the magnetic circuit units corresponds to one of the vibration units, each of the vibration units is arranged between the first magnetic assembly and the second magnetic assembly of the corresponding magnetic circuit unit, each of the vibration units comprises a diaphragm and a voice coil connected to the diaphragm, the diaphragm comprises a vibrating plate and a folded ring arranged around the vibrating plate along the second direction, the voice coil comprises a first voice coil part and a second voice coil part located on both sides of the vibrating plate along the first direction, the first voice coil part is located in the first magnetic gap of the corresponding magnetic circuit unit, and the second voice coil part is located in the second magnetic gap of the corresponding magnetic circuit unit.

[0009] In the first working state, at least one of the vibration units radiates sound waves of a first phase outward, and the remaining at least one of the vibration units radiates sound waves of a second phase outward, and the first phase and the second phase are opposite phases.

[0010] In an embodiment, in the first working state, two adjacent vibration assemblies respectively radiate sound waves of the first phase and the second phase outward, wherein each of the vibration assemblies comprises one of the vibration units or a plurality of adjacent vibration units, and the number of the vibration units in the two adjacent vibration assemblies is the same or close.

[0011] In an embodiment, in the second working state, a plurality of the vibration units radiate sound waves of the same phase outward, wherein the second working state is different from the first working state.

[0012] In an embodiment, in each of the vibration units,

[0013] The first voice coil part and the second voice coil part are wound by the same wire, the vibrating plate comprises an inner vibrating plate connected to the inner wall of the voice coil and an outer vibrating plate connected to the outer wall of the voice coil;

[0014] Alternatively, the first voice coil part and the second voice coil part are wound by the same wire, the vibrating plate comprises an inner vibrating plate connected to the inner wall of the voice coil and an outer vibrating plate connected to the outer wall of the voice coil, the inner vibrating plate comprises an inner flat plate part and an inner folded part extended and connected to the inner wall of the voice coil by bending the outer edge of the inner flat plate part, and / or the outer vibrating plate comprises an outer flat plate part and an outer folded part extended and connected to the outer wall of the voice coil by bending the inner edge of the outer flat plate part;

[0015] Alternatively, the first voice coil part and the second voice coil part are wound by the same wire, the vibrating plate comprises an inner vibrating plate connected to the inner wall of the voice coil and an outer vibrating plate connected to the outer wall of the voice coil, one side of the second voice coil part is connected to an external circuit;

[0016] Alternatively, the first voice coil part and the second voice coil part are independently wound by different wires.

[0017] In an embodiment, each of the vibration units,

[0018] The first voice coil part and the second voice coil part are wound by the same wire, and the vibration plate comprises an inner vibration plate connected with the inner wall of the voice coil and an outer vibration plate connected with the outer wall of the voice coil.

[0019] The diaphragm further comprises a waterproof film, and the waterproof film is connected between the inner vibration plate and the outer vibration plate and is attached and wrapped around one end of the second voice coil part facing the second magnetic assembly.

[0020] In an embodiment, each of the vibration units, the folded ring comprises a first connecting part, a deformation part and a second connecting part connected in sequence along the second direction, the first connecting part connects the vibration plate, the second connecting part connects the shell, and the deformation part is recessed towards the side where the second magnetic assembly is located.

[0021] In an embodiment, each of the vibration units, the folded ring is in a wavy curved structure, and the two ends of the folded ring along the first direction are a first end and a second end respectively, the first end is connected with the edge of the vibration plate, the second end is connected with the shell or the second magnetic assembly, and the first end is disposed on the same side as the first magnetic assembly, and the second end is disposed on the same side as the second magnetic assembly.

[0022] In an embodiment, the folded ring is connected to the side of the vibration plate facing the second magnetic assembly, and the second end is arranged around the second magnetic assembly;

[0023] And / or, the outline of the outer edge of the vibration plate projected along the first direction is located outside the outline of the first magnetic assembly projected along the first direction;

[0024] And / or, the position close to the outer edge of the vibration plate is bent and extended in the direction close to the first magnetic assembly to form a slope structure, and the first magnetic assembly is provided with a avoiding part for avoiding the slope structure.

[0025] In an embodiment, the first magnetic assembly comprises a first inner magnet and a first outer magnet arranged along the second direction, and the first inner magnet and the first outer magnet form the first magnetic gap therebetween;

[0026] The second magnetic assembly comprises a second inner magnet and a second outer magnet arranged along the second direction, and the second inner magnet and the second outer magnet form the second magnetic gap therebetween.

[0027] In an embodiment, each of the magnetic circuit units has a first inner magnet and a second inner magnet, and a first outer magnet and a second outer magnet, wherein the magnetic pole directions of the first inner magnet and the second inner magnet are opposite, the magnetic pole directions of the first outer magnet and the second outer magnet are opposite, and the magnetic pole directions of the first inner magnet and the first outer magnet are opposite.

[0028] The magnetic pole directions of the first inner magnet and the second inner magnet are opposite, the magnetic pole directions of the first outer magnet and the second outer magnet are opposite, and the magnetic pole directions of the first inner magnet and the first outer magnet are opposite.

[0029] And / or, the first magnetic gap and the second magnetic gap are arranged in alignment along the first direction.

[0030] And / or, the first outer magnet is a ring magnet.

[0031] And / or, the first inner magnet and the second inner magnet are arranged oppositely, and the first outer magnet and the second outer magnet are arranged oppositely.

[0032] In an embodiment, each of the vibration units further comprises a centering bracket, which is arranged at an end of the second voice coil part away from the diaphragm, and comprises an inner fixed part, an elastic arm part and an outer fixed part connected in sequence along the second direction, the inner fixed part is connected with the second voice coil part, the outer fixed part is connected with the shell, the elastic arm part connects the inner fixed part and the outer fixed part, and the magnetic circuit unit has an elastic arm part avoiding space for avoiding the elastic arm part of the centering bracket corresponding thereto.

[0033] One side of the second voice coil part is connected with an external circuit, or in each of the vibration units, the centering bracket is an electrically conductive centering bracket, and the second voice coil part is connected with an external circuit through the centering bracket.

[0034] In an embodiment, in each of the vibration units, an electrically conductive layer is arranged on a side surface of the second voice coil part facing the second voice coil part, the second voice coil part is electrically connected with the electrically conductive layer, an electrically conductive terminal is injection molded on the shell, and the electrically conductive layer and the electrically conductive terminal are connected through conductive glue, so that the second voice coil part is electrically connected with an external circuit through the electrically conductive layer.

[0035] In an embodiment, the shell comprises a plastic support and a first metal plate and a second metal plate arranged on both sides of the plastic support along the first direction, the plastic support, the first metal plate and the second metal plate enclose to form the accommodating space, the first magnetic assembly is arranged on the first metal plate, and the second magnetic assembly is arranged on the second metal plate.

[0036] In an embodiment, the first metal plate and / or the second metal plate are made of a magnetically conductive material.

[0037] In an embodiment, the first voice coil part and the second voice coil part in each vibration unit are wound by the same wire, the vibration plate comprises an inner vibration plate connected with the inner wall of the voice coil and an outer vibration plate connected with the outer wall of the voice coil, and the inner vibration plate has a magnetic conductive part.

[0038] In an embodiment, the inner vibration plate is a magnetic conductive plate member to form the magnetic conductive part.

[0039] Alternatively, a magnetic conductive member is embedded in the inner vibration plate to form the magnetic conductive part.

[0040] Alternatively, a magnetic conductive member is arranged on at least one side of the inner vibration plate along the first direction to form the magnetic conductive part.

[0041] Alternatively, a magnetic conductive material is coated on at least one side surface of the inner vibration plate along the first direction to form the magnetic conductive part.

[0042] In an embodiment, the number of the accommodating spaces is two, and the number of the magnetic circuit units and the number of the vibration units are consistent with and one-to-one corresponding to the number of the accommodating spaces.

[0043] The application further provides a sound production module, which comprises a shell and a sound production unit as described above accommodated in the shell.

[0044] In the sound production unit, each magnetic circuit unit comprises a first magnetic assembly and a second magnetic assembly arranged on the upper and lower sides of the vibration unit, which realizes the double magnetic circuit design of the sound production unit, makes the magnetic field distribution of the voice coil vibration area uniform, and provides the voice coil with a larger driving force that changes slowly and flatly with displacement, thereby reducing the risk of distortion.

[0045] Moreover, compared with the conventional DPS loudspeaker, the multiple magnetic circuit units and the multiple vibration units in the sound production unit of the application are distributed along the horizontal direction, do not occupy too much space in the vertical thickness of the shell, and all the vibration units only need the upper vibration space and the lower vibration space when vibrating up and down, without occupying the thickness space of the sound production unit, which is beneficial to the thin design.

[0046] Furthermore, the first working state of the sound production unit of the application can be a receiver state, in which at least one vibration unit radiates a first phase of sound waves outward, and the remaining at least one vibration unit radiates a second phase of sound waves outward, the first phase and the second phase are opposite phases, which can form a dipole effect and has the technical effect of far-field noise reduction, thereby improving the privacy of the call. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to make the technical solutions of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only need to be some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on the drawings shown.

[0048] Fig. 1 is an assembly diagram of a sound production module according to an embodiment of the present application;

[0049] Fig. 2 is a sectional view of the sound production module according to an embodiment of the present application;

[0050] Fig. 3 is an exploded view of a sound production module according to another embodiment of the present application;

[0051] Fig. 4 is a sectional view of a sound production unit according to another embodiment of the present application;

[0052] Fig. 5 is an exploded view of a sound production unit according to an embodiment of the present application;

[0053] Fig. 6 is a sectional view of a sound production unit according to another embodiment of the present application;

[0054] Fig. 7 is an exploded view of a sound production module according to another embodiment of the present application;

[0055] Fig. 8 is another sectional view of a sound production module according to an embodiment of the present application;

[0056] Fig. 9 is a diagram of magnetic field distribution of a sound production unit according to an embodiment of the present application;

[0057] Fig. 10 is a diagram of BL(x) curve of a sound production unit according to an embodiment of the present application;

[0058] Fig. 11 is a diagram of magnetization of a vibration unit in a sound production unit according to an embodiment of the present application;

[0059] Fig. 12 is a sectional view of a voice coil and a diaphragm in a sound production unit according to an embodiment of the present application;

[0060] Fig. 13 is a sectional view of a voice coil and a diaphragm in a sound production unit according to another embodiment of the present application;

[0061] Fig. 14 is a sectional view of a voice coil and a diaphragm in a sound production unit according to another embodiment of the present application;

[0062] Fig. 15 is a diagram of structure of a folded ring in a sound production unit according to an embodiment of the present application;

[0063] Fig. 16 is a diagram of structure of a second support in a sound production unit according to an embodiment of the present application, in which the second support is designed in an integrated manner;

[0064] Fig. 17 is a structure diagram of a split design of the second support in a sound emitting unit according to an embodiment of the present application;

[0065] Fig. 18 is a structure diagram of a first module shell and a first support being cut together in a sound emitting module according to an embodiment of the present application;

[0066] Fig. 19 is a structure diagram of a second module shell and a second support being cut together in a sound emitting module according to an embodiment of the present application;

[0067] Fig. 20 is a sectional view of an inner vibration plate and a magnetic conducting part in a sound emitting unit according to an embodiment of the present application.

[0068] BRIEF DESCRIPTION OF THE DRAWINGS 100, sound emitting unit; 10, shell; 11, accommodating space; 12, conductive terminal; 13, plastic support; 131, first support; 132, second support; 14, first metal plate; 15, second metal plate; 20, magnetic circuit unit; 21, first magnetic assembly; 211, first magnetic gap; 212, first inner magnet; 213, first outer magnet; 22, second magnetic assembly; 221, second magnetic gap; 222, second inner magnet; 223, second outer magnet; 224, avoiding space; 30, vibration unit; 31, diaphragm; 311, vibration plate; 3111, inner vibration plate; 3112, outer vibration plate; 3113, magnetic conducting part; 3114, inner flat plate part; 3115, inner bending part; 3116, outer flat plate part; 3117, outer bending part; 312, bending ring; 3121, first end; 3122, second end; 3123, bending part; 3124, first connecting part; 3125, deformation part; 3126, second connecting part; 3127, conductive layer; 3128, conductive path; 313, waterproof film; 32, voice coil; 321, first voice coil part; 322, second voice coil part; 323, long axis side; 324, short axis side; 40, centering support; 41, inner fixing part; 42, elastic arm part; 43, outer fixing part; 200, sound emitting module; 50, outer shell; 51, accommodating cavity; 511, front cavity; 512, rear cavity; 52, first module shell; 53, second module shell; 54, sound outlet hole; 55, sound conducting channel.

[0069] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0070] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0071] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, motion condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0072] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of a person skilled in the art, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0073] At present, portable intelligent devices are increasingly thin and light, especially folding products. Therefore, terminal devices have higher and higher demands for ultra-thin micro sound production modules, such as loudspeaker modules.

[0074] A conventional DPS (Digital Signal Processing) loudspeaker integrates two sets of vibration systems together through a shared magnetic circuit. Both sets of vibration systems need to reserve an upper vibration space and a sound outlet pipeline at the end of the whole machine, and each set of vibration system has two sets of diaphragms. Each set of diaphragm needs two vibration spaces, i.e., an upper vibration space and a lower vibration space, and two sets of diaphragms need four vibration spaces, which occupies a large thickness space of the DPS product. When the thickness of the DPS product is reduced, in order to maintain the performance under the EQ (Equalizer) of the product, i.e., to maintain the product at low frequency, to increase the input voltage of the loudspeaker, to push the displacement of each frequency point of the loudspeaker to Xmax, and to maximize the performance of the product, a larger vibration space needs to be reserved in the product and at the end of the whole machine, so only the magnet, the dust cap, and the yoke in the magnetic circuit unit can be thinned. However, the fragmentation rate of the too-thin magnetic circuit unit is high during transportation, cleaning, and magnetization, which leads to a sharp increase in material cost. In addition, because the magnet, the dust cap, and the yoke in the magnetic circuit unit are thinned to different degrees, the risk of drop damage of the product is increased, and the reliability and yield of the product are also greatly reduced, which cannot complete mass production.

[0075] Therefore, it is necessary to provide a sound production unit and a sound production module capable of realizing thin and light design and having the technical effect of far-field sound elimination, so as to solve or at least alleviate the above technical problems.

[0076] As shown in FIGS. 2-8, the present application provides a sound emitting unit 100, which comprises a shell 10, a magnetic circuit system and a vibration system, wherein the shell 10 has a plurality of accommodating spaces 11 distributed along a second direction; the magnetic circuit system comprises a plurality of magnetic circuit units 20, each accommodating space 11 corresponds to a magnetic circuit unit 20, each magnetic circuit unit 20 comprises a first magnetic assembly 21 and a second magnetic assembly 22 arranged along a first direction, the second direction is perpendicular to the first direction, the first magnetic assembly 21 has a first magnetic gap 211, and the second magnetic assembly 22 has a second magnetic gap 221; the vibration system comprises a plurality of vibration units 30, each magnetic circuit unit 20 corresponds to a vibration unit 30, each vibration unit 30 is arranged between the first magnetic assembly 21 and the second magnetic assembly 22 of the corresponding magnetic circuit unit 20, each vibration unit 30 comprises a diaphragm 31 and a voice coil 32 connected to the diaphragm 31, the diaphragm 31 comprises a vibration plate 311 and a folded ring 312 annularly arranged on the vibration plate 311 along the second direction, the voice coil 32 comprises a first voice coil part and a second voice coil part located on both sides of the vibration plate 311 along the first direction, the first voice coil part is located in the first magnetic gap 211 of the corresponding magnetic circuit unit 20, and the second voice coil part is located in the second magnetic gap 221 of the corresponding magnetic circuit unit 20; wherein in a first working state, at least one vibration unit 30 radiates sound waves of a first phase outward, and the remaining at least one vibration unit 30 radiates sound waves of a second phase outward, the first phase and the second phase are opposite phases.

[0077] The sound emitting unit 100 can be a loudspeaker unit, specifically a DPS loudspeaker unit, and can be applied in a sound emitting module 200 of an electronic device, which can be a computer, a mobile phone, a smart wearable device, etc. The present embodiment takes the sound emitting unit 100 as a loudspeaker unit as an example for description.

[0078] The first direction is the vertical direction shown in FIGS. 2 and 8, which is the up-down direction, and the second direction is the horizontal direction shown in FIGS. 2 and 8, which is the left-right direction.

[0079] The shell 10 has a plurality of accommodating spaces 11 distributed along the second direction, i.e. the horizontal direction, and each accommodating space 11 corresponds to accommodate a magnetic circuit unit 20 and a vibration unit 30, so that the plurality of magnetic circuit units 20 and the plurality of vibration units 30 are distributed along the horizontal direction. Each magnetic circuit unit 20 includes a first magnetic assembly 21 and a second magnetic assembly 22, the first magnetic assembly 21 and the second magnetic assembly 22 are spaced apart along the up-down direction, and the vibration unit 30 is located between the first magnetic assembly 21 and the second magnetic assembly 22 of the corresponding magnetic circuit unit 20, i.e. the first magnetic assembly 21 and the second magnetic assembly 22 are located on the upper and lower sides of the vibration unit 30. The first magnetic assembly 21 and the second magnetic assembly 22 provide driving force for the voice coil 32 of the corresponding vibration unit 30, so that the voice coil 32 vibrates along the first direction, and in turn drives the diaphragm 31 to vibrate along the first direction, realizing vibration sound production.

[0080] The diaphragm 31 includes a vibration plate 311 and a folded ring 312, wherein the folded ring 312 is annularly arranged on the vibration plate 311 along the second direction, i.e. along the horizontal direction, the first voice coil 32 part and the second voice coil 32 part of the voice coil 32 are located on the upper side and the lower side of the vibration plate 311 respectively, and the first voice coil 32 part is located in the first magnetic gap 211 of the corresponding magnetic circuit unit 20, and the second voice coil 32 part is located in the second magnetic gap 221 of the corresponding magnetic circuit unit 20. When the voice coil 32 is energized, the first voice coil 32 part and the second voice coil 32 part cut the magnetic force lines reciprocatingly in the first magnetic gap 211 and the second magnetic gap 221 respectively, drive the diaphragm 31 to vibrate up and down, thereby driving the air to produce sound, and completing the energy conversion between electricity and sound.

[0081] As shown in FIG. 9, in the sound production unit 100, each magnetic circuit unit 20 includes a first magnetic assembly 21 and a second magnetic assembly 22 arranged on the upper and lower sides of the vibration unit 30, realizing the double magnetic circuit design of the sound production unit 100, so that the magnetic field distribution of the voice coil 32 vibration area is uniform, and a larger driving force that changes slowly and flatly with displacement can be provided for the voice coil 32, as shown in the BL(x) curve in FIG. 10, reducing the risk of distortion.

[0082] As shown in FIG. 10, the BL curve is completely symmetrical on the left and right, and the BL at the Xmax position (the maximum displacement of the voice coil 32) is attenuated within 10% compared with the equilibrium position, thereby realizing the super-linear BL(x) design. It can be understood that the horizontal axis in FIG. 10 represents displacement, with units of mm, and the vertical axis represents BL, with units of Wb / m.

[0083] Further, compared with the conventional DPS loudspeaker, the plurality of magnetic circuit units 20 and the plurality of vibration units 30 in the sound production monomer 100 of the present application are distributed in the horizontal direction, and do not occupy too much space in the vertical thickness of the shell 10. When all the vibration units 30 vibrate up and down, only two vibration spaces, i.e., the upper vibration space and the lower vibration space, are needed, and no additional thickness space of the sound production monomer 100 is occupied, which is beneficial to the thin design. Therefore, under the same thickness, the sound production monomer 100 of the present application can thicken the design of the magnetic circuit unit 20, maximize the use of the thickness space of the product and the whole machine, improve the strength of the magnetic circuit unit 20, and reduce the risk of fragmentation and the risk of damage due to falling, thereby reducing the material cost, improving the product reliability and yield, and realizing mass production.

[0084] Further, the first working state of the sound production monomer 100 of the present application can be a receiver state (RCV state). In the receiver state, at least one vibration unit 30 radiates a first phase of sound waves outward, and the remaining at least one vibration unit 30 radiates a second phase of sound waves outward. The first phase and the second phase are opposite phases, which can form a dipole effect and have the technical effect of far-field noise reduction, thereby improving the call privacy.

[0085] Further, in the first working state, two adjacent vibration assemblies radiate the first phase and the second phase of sound waves outward, respectively. Each vibration assembly includes one vibration unit 30 or a plurality of adjacent vibration units 30, and the number of vibration units 30 in the two adjacent vibration assemblies is the same or close.

[0086] Specifically, the plurality of vibration units 30 are divided into different vibration assemblies, and the number of vibration assemblies is at least two. Each vibration assembly includes one vibration unit 30 or a plurality of adjacent vibration units 30. The number of vibration units 30 in the two adjacent vibration assemblies is the same or close. Understandably, the number of vibration units 30 in the two adjacent vibration assemblies close means that the difference between the number of vibration units 30 in the two vibration assemblies is equal to one or two. In summary, the difference between the number of vibration units 30 in the two adjacent vibration assemblies is not too large, so as to avoid the imbalance in the number of vibration units 30 radiating opposite phases of sound waves outward, thereby affecting the call privacy.

[0087] For convenience of description, the first phase is represented by “+”, and the second phase is represented by “-”.

[0088] In the receiver state, when the number of vibration units 30 is two, the radiation modes are + and -, respectively.

[0089] When the number of vibration units 30 is three, the radiation modes are +, +, -, +, -, -, +, -, and +, respectively.

[0090] When the number of the vibration units 30 is four, the radiation modes are +, +, -, -, / +, -, +, - and so on respectively;

[0091] When the number of the vibration units 30 is five, the radiation modes are +, +, +, -, -, / +, +, -, -, +, / +, -, +, -, + and so on respectively;

[0092] When the number of the vibration units 30 is six, the radiation modes are +, +, +, -, -, -, / +, +, -, -, +, / +, -, +, -, + and so on respectively.

[0093] By analogy, the phase modes of the sound waves radiated outward by the plurality of vibration units 30 can be diversified and flexible, meeting various requirements.

[0094] In an embodiment, in the second working state, the plurality of vibration units 30 radiate sound waves of the same phase outward, wherein the second working state is different from the first working state.

[0095] Specifically, the second working state of the sound production monomer 100 can be a speaker state (SPK state), in which all the vibration units 30 radiate sound waves of the same phase outward. The sound waves of the same phase can make the sound waves superimposed, improve the playback effect, and broaden the sound playback frequency band.

[0096] As shown in FIGS. 2, 4-8 and 13-14, in an embodiment, in each vibration unit 30, the first voice coil 32 part and the second voice coil 32 part are wound by the same wire, and the vibration plate 311 includes an inner vibration plate 3111 connected with the inner wall of the voice coil 32 and an outer vibration plate 3112 connected with the outer wall of the voice coil 32; in this embodiment, the first voice coil 32 part and the second voice coil 32 part are designed in one body and wound by the same wire, which is a single voice coil 32 design, simple and convenient. The vibration plate 311 is separated into the inner vibration plate 3111 and the outer vibration plate 3112 by the voice coil 32, wherein the inner vibration plate 3111 is connected with the inner wall of the voice coil 32, and the outer vibration plate 3112 is connected with the outer wall of the voice coil 32, realizing the assembly of the voice coil 32 and the diaphragm 31.

[0097] As shown in FIG. 2, FIG. 4, FIG. 6, FIG. 8, FIG. 14, in another embodiment, the first voice coil 32 part and the second voice coil 32 part are wound by the same wire, the vibrating plate 311 includes an inner vibrating plate 3111 connected with the inner wall of the voice coil 32 and an outer vibrating plate 3112 connected with the outer wall of the voice coil 32, the inner vibrating plate 3111 includes an inner flat plate part 3114 and an inner bending part bent and extended from the outer edge of the inner flat plate part 3114 and connected with the inner wall of the voice coil 32, and / or, the outer vibrating plate 3112 includes an outer flat plate part 3116 and an outer bending part bent and extended from the inner edge of the outer flat plate part 3116 and connected with the outer wall of the voice coil 32. In this embodiment, the first voice coil 32 part and the second voice coil 32 part are designed in one body and wound by the same wire, which is designed as a single voice coil 32, simple and convenient. The vibrating plate 311 is separated into the inner vibrating plate 3111 and the outer vibrating plate 3112 by the voice coil 32, wherein the inner vibrating plate 3111 is connected with the inner wall of the voice coil 32, and the outer vibrating plate 3112 is connected with the outer wall of the voice coil 32, realizing the assembly of the voice coil 32 and the diaphragm 31.

[0098] In this embodiment, the first voice coil 32 part and the second voice coil 32 part are designed in one body and wound by the same wire, which is designed as a single voice coil 32, simple and convenient. The vibrating plate 311 is separated into the inner vibrating plate 3111 and the outer vibrating plate 3112 by the voice coil 32, wherein the inner vibrating plate 3111 is connected with the inner wall of the voice coil 32, and the outer vibrating plate 3112 is connected with the outer wall of the voice coil 32, realizing the assembly of the voice coil 32 and the diaphragm 31.

[0099] In another embodiment, the first voice coil 32 part and the second voice coil 32 part are wound by the same wire, the vibrating plate 311 includes an inner vibrating plate 3111 connected with the inner wall of the voice coil 32 and an outer vibrating plate 3112 connected with the outer wall of the voice coil 32, and one side of the second voice coil 32 part is connected with the external circuit. In this embodiment, the first voice coil 32 part and the second voice coil 32 part are designed in one body and wound by the same wire, which is designed as a single voice coil 32, simple and convenient. The vibrating plate 311 is separated into the inner vibrating plate 3111 and the outer vibrating plate 3112 by the voice coil 32, wherein the inner vibrating plate 3111 is connected with the inner wall of the voice coil 32, and the outer vibrating plate 3112 is connected with the outer wall of the voice coil 32, realizing the assembly of the voice coil 32 and the diaphragm 31. Moreover, one side of the second voice coil 32 part is connected with the external circuit, realizing the conduction of the voice coil 32 and the external circuit.

[0100] As shown in FIG. 3, FIG. 11 and FIG. 12, in another embodiment, the first voice coil 32 part and the second voice coil 32 part are respectively formed by winding different wires independently. In this embodiment, the first voice coil 32 part and the second voice coil 32 part are designed in a split type, respectively formed by winding different wires independently, designed as a double voice coil 32, and the vibrating plate 311 is not separated by the voice coil 32, and the vibrating plate 311 is a one-piece vibrating plate 311.

[0101] As shown in FIG. 4, in other embodiments, in each of the vibrating units 30, the first voice coil 32 part and the second voice coil 32 part are formed by winding the same wire, the vibrating plate 311 includes an inner vibrating plate 3111 connected with the inner wall of the voice coil 32 and an outer vibrating plate 3112 connected with the outer wall of the voice coil 32, and the diaphragm 31 further includes a waterproof film 313, the waterproof film 313 is connected between the inner vibrating plate 3111 and the outer vibrating plate 3112, and the waterproof film 313 is attached to and wrapped around one end of the second voice coil 32 part facing the second magnetic assembly 22.

[0102] In this embodiment, the first voice coil 32 part and the second voice coil 32 part are designed in a one-piece type, formed by winding the same wire, designed as a single voice coil 32, and simple and convenient. The vibrating plate 311 is separated by the voice coil 32 into the inner vibrating plate 3111 and the outer vibrating plate 3112, wherein the inner vibrating plate 3111 is connected with the inner wall of the voice coil 32, and the outer vibrating plate 3112 is connected with the outer wall of the voice coil 32, to realize the assembly of the voice coil 32 and the diaphragm 31.

[0103] Moreover, the diaphragm 31 further includes the waterproof film 313, the waterproof film 313 is connected between the inner vibrating plate 3111 and the outer vibrating plate 3112, and the waterproof film 313 is attached to the upper end of the second voice coil 32 part, to play a waterproof role and improve the waterproof performance and level of the sound production unit 100.

[0104] The voice coil 32 of the present application can be designed flexibly according to actual needs, designed as a single voice coil 32 or a double voice coil 32. As shown in FIG. 2 to FIG. 7 and FIG. 12 to FIG. 15, in adjacent two vibrating units 30, the two folded rings 312 are connected with each other as a whole, to facilitate the manufacturing.

[0105] As shown in FIG. 8, in an embodiment, in each of the vibrating units 30, the folded ring 312 includes a first connecting part 3124, a deformation part 3125 and a second connecting part 3126 connected in sequence along the second direction, the first connecting part 3124 connects the vibrating plate 311, the second connecting part 3126 connects the shell 10, and the deformation part 3125 is recessed towards the side where the second magnetic assembly 22 is located.

[0106] In this embodiment, the folded ring 312 is a horizontal folded ring 312, and the folded ring 312 includes a first connecting portion 3124, a deformation portion 3125, and a second connecting portion 3126 connected in sequence in the horizontal direction, wherein the first connecting portion 3124 is connected to the vibrating plate 311, and the second connecting portion 3126 is connected to the shell 10 to realize assembly with the shell 10. The deformation portion 3125 is arranged in a downward recessed manner, which is beneficial to support and guide the vertical vibration of the diaphragm 31. The folded ring 312 is designed as a horizontal folded ring 312, which has a simple structure and can better guide the up-and-down movement of the diaphragm 31, maintain the linearity of vibration, reduce the off-axis deviation, and further reduce distortion.

[0107] As shown in FIG. 6, in another embodiment, in each vibration unit 30, the folded ring 312 has a wavy curved structure, and the two ends of the folded ring 312 in the first direction are a first end 3121 and a second end 3122, respectively. The first end 3121 is connected to the edge of the vibrating plate 311, and the second end 3122 is connected to the shell 10 or the second magnetic assembly 22, and the first end 3121 is arranged on the same side as the first magnetic assembly 21, and the second end 3122 is arranged on the same side as the second magnetic assembly 22.

[0108] Specifically, the two ends of the folded ring 312 in the up-and-down direction are a first end 3121 and a second end 3122, respectively, wherein the first end 3121 is connected to the vibrating plate 311, and the second end 3122 is connected to the shell 10 or the second magnetic assembly 22, and the first end 3121 is arranged on the same side as the first magnetic assembly 21, and the second end 3122 is arranged on the same side as the second magnetic assembly 22, so that the folded ring 312 has a certain height in the vertical direction, that is, the folded ring 312 is a vertical folded ring 312 with extension in the vertical direction, which reduces the occupied space of the folded ring 312 in the horizontal direction, expands the size of the vibrating plate 311 in the horizontal direction of the sound emitting unit 100, improves the effective vibration area (SD) of the sound emitting unit 100, improves the sensitivity of the sound emitting unit 100, and improves the mid-frequency performance of the product, so that the mid-frequency performance of the product is optimized.

[0109] As shown in FIG. 6, in an embodiment, the folded ring 312 includes a plurality of bending portions 3123 connected in sequence in the first direction, each bending portion 3123 is bent towards the second direction, and the bending directions of any two adjacent bending portions 3123 are opposite, so that the folded ring 312 forms a wavy curved structure, and the two outermost bending portions 3123 in the first direction form the first end 3121 and the second end 3122, respectively.

[0110] Specifically, the folded ring 312 comprises a plurality of bending portions 3123 connected in sequence along the up-down direction, each bending portion 3123 is bent towards the horizontal direction, and the bending directions of any two adjacent bending portions 3123 are opposite, so that the folded ring 312 forms a wave-shaped bending structure, wherein the two bending portions 3123 located at the outermost sides along the first direction form the first end 3121 and the second end 3122 respectively, i.e., the bending portion 3123 located at the uppermost side and the bending portion 3123 located at the lowermost side form the first end 3121 and the second end 3122 respectively. The folded ring 312 is designed as a wave-shaped bending structure arranged along the vertical direction and bent multiple times along the horizontal direction, which improves the ductility of the folded ring 312, further reduces the occupied space of the folded ring 312 in the horizontal direction, thereby further expanding the size of the vibrating plate 311 in the horizontal direction of the sound production unit 100, and more greatly improving the effective vibration area of the sound production unit 100, further improving the sensitivity of the sound production unit 100 and optimizing the mid-frequency performance.

[0111] Each bending portion 3123 is an arc-shaped bending portion 3123, and any two adjacent bending portions 3123 are smoothly and continuously connected, which improves the smoothness and continuity of the folded ring 312, avoids stress concentration, and is more conducive to improving the ductility of the folded ring 312.

[0112] In an embodiment, the folded ring 312 is connected to the side of the vibrating plate 311 facing the second magnetic assembly 22, and the second end 3122 surrounds the second magnetic assembly 22. As shown in FIG. 6, the folded ring 312 is connected to the side of the vibrating plate 311 facing the second magnetic assembly 22, i.e., the folded ring 312 is connected to the lower side of the vibrating plate 311, and the second end 3122 surrounds the outside of the second magnetic assembly 22, which is a reasonable structure design.

[0113] In an embodiment, the profile size of the second end 3122 projected along the first direction is greater than the profile size of the first end 3121 projected along the first direction, i.e., the profile size of the second end 3122 projected along the up-down direction on the horizontal plane is greater than the profile size of the first end 3121 projected on the horizontal plane. The first end 3121 and the second end 3122 are both arranged in a ring shape, and the outer profile size of the second end 3122 is increased relative to the first end 3121, which further improves the ductility of the folded ring 312, reduces the occupied space of the folded ring 312 in the horizontal direction, expands the size of the vibrating plate 311 in the horizontal direction of the sound production unit 100, thereby improving the effective vibration area of the sound production unit 100, and at the same time improving the ductility of the folded ring 312.

[0114] In an embodiment, the outer edge of the vibrating plate 311 is projected in the first direction to be located outside the projection of the second magnetic assembly 22 in the first direction, i.e., the outer edge of the vibrating plate 311 is projected on the horizontal plane to be located outside the projection of the second magnetic assembly 22 on the horizontal plane, so that the outer contour size of the vibrating plate 311 is larger, and the effective vibrating area of the sound production unit 100 is improved.

[0115] In an embodiment, the outer edge of the vibrating plate 311 is projected in the first direction to be located outside the projection of the first magnetic assembly in the first direction, i.e., the outer edge of the vibrating plate 311 is projected on the horizontal plane to be located outside the projection of the first magnetic assembly 21 on the horizontal plane, so that the outer contour size of the vibrating plate 311 is larger, and the effective vibrating area of the sound production unit 100 is improved.

[0116] In an embodiment, the vibrating plate 311 is bent to extend in the form of a slope structure near the outer edge thereof in a direction close to the first magnetic assembly 21, and the first magnetic assembly 21 is provided with a avoiding portion for avoiding the slope structure. Specifically, the vibrating plate 311 is bent to extend in the form of a slope structure near the outer edge thereof upward, and the avoiding portion of the first magnetic assembly 21 can avoid the slope structure, preventing the first magnetic assembly 21 from interfering with the vibrating plate 311.

[0117] As shown in FIGS. 2-9 and 11, in an embodiment, the first magnetic assembly 21 includes a first inner magnet 212 and a first outer magnet 213 arranged in the second direction, and a first magnetic gap 211 is formed between the first inner magnet 212 and the first outer magnet 213. Magnetic field lines can be generated between the first inner magnet 212 and the first outer magnet 213 to pass through the first magnetic gap 211, so that the first voice coil 32 part is vibrated up and down to cut the magnetic field lines when the first voice coil 32 part is energized.

[0118] The second magnetic assembly 22 includes a second inner magnet 222 and a second outer magnet 223 arranged in the second direction, and a second magnetic gap 221 is formed between the second inner magnet 222 and the second outer magnet 223. Magnetic field lines can be generated between the second inner magnet 222 and the second outer magnet 223 to pass through the second magnetic gap 221, so that the second voice coil 32 part is vibrated up and down to cut the magnetic field lines when the second voice coil 32 part is energized.

[0119] In an embodiment, the magnetic pole directions of the first inner magnet 212 and the second inner magnet 222 are opposite, the magnetic pole directions of the first outer magnet 213 and the second outer magnet 223 are opposite, and the magnetic pole directions of the first inner magnet 212 and the first outer magnet 213 are opposite. In this way, the magnetic lines of force generated by the first outer magnet 213 and the first inner magnet 212 form a ring-shaped closed magnetic loop, and the magnetic lines of force generated by the second outer magnet 223 and the second inner magnet 222 also form a ring-shaped closed magnetic loop, so that more and more dense magnetic lines of force pass through the voice coil 32, and the driving force is greater.

[0120] In an embodiment, the first magnetic gap 211 and the second magnetic gap 221 are arranged in alignment in the first direction, so that the first voice coil 32 part and the second voice coil 32 part respectively located in the first magnetic gap 211 and the second magnetic gap 221 are arranged in alignment, vibration consistency is improved, and deviation is avoided.

[0121] In an embodiment, the first outer magnet 213 is a ring-shaped magnet, which has good continuity and is beneficial to improve the uniformity of the magnetic field distribution.

[0122] The first inner magnet 212 is arranged opposite to the second inner magnet 222, and the first outer magnet 213 is arranged opposite to the second outer magnet 223, which is beneficial to the alignment arrangement of the first magnetic gap 211 and the second magnetic gap 221, so that the first voice coil 32 part and the second voice coil 32 part respectively located in the first magnetic gap 211 and the second magnetic gap 221 are arranged in alignment, vibration consistency is improved, and deviation is avoided.

[0123] In an embodiment, the size of the first inner magnet 212 along the second direction is the same as the size of the second inner magnet 222 along the second direction, and the size of the first outer magnet 213 along the second direction is smaller than the size of the second outer magnet 223 along the second direction. Specifically, the first inner magnet 212 and the second inner magnet 222 are matched in shape, and the size of the first inner magnet 212 in the horizontal direction is the same as the size of the second inner magnet 222 in the horizontal direction, which is beneficial to improve the uniformity of the magnetic field distribution. Further, the size of the first outer magnet 213 in the horizontal direction is smaller than the size of the second outer magnet 223 in the horizontal direction, that is, the outer edge size of the first outer magnet 213 is smaller than the outer edge size of the second outer magnet 223. Compared with the second outer magnet 223, the outer edge of the first outer magnet 213 is designed to be narrowed, so as to avoid interference between the first outer magnet 213 and the diaphragm 31.

[0124] In an embodiment, each vibration unit 30 further comprises a centering bracket 40 arranged at one end of the second voice coil 32 part away from the diaphragm 31, the centering bracket 40 comprises an inner fixing part 41, an elastic arm part 42 and an outer fixing part 43 connected in sequence along the second direction, the inner fixing part 41 is connected with the second voice coil 32 part, the outer fixing part 43 is connected with the shell 10, the elastic arm part 42 connects the inner fixing part 41 and the outer fixing part 43, and the second magnetic assembly 22 has an avoiding space 224 for avoiding the elastic arm part 42 of the centering bracket 40 corresponding thereto.

[0125] As shown in FIGS. 4-7, the centering bracket 40 is arranged at the bottom end of the second voice coil 32 part, and the centering bracket 40 comprises an inner fixing part 41, an elastic arm part 42 and an outer fixing part 43, wherein the inner fixing part 41, the elastic arm part 42 and the outer fixing part 43 are connected in sequence from inside to outside along the horizontal direction, the outer fixing part 43 is connected with the shell 10, the inner fixing part 41 is connected with the second voice coil 32 part, the elastic arm part 42 connects the inner fixing part 41 and the outer fixing part 43, and the elastic arm part 42 has elasticity so that the inner fixing part 41 can vibrate with the second voice coil 32 part. The centering bracket 40 plays a role of centering and supporting the voice coil 32, preventing the voice coil 32 from being polarized, and improving the vibration stability of the voice coil 32. The second magnetic assembly 22 has an avoiding space 224 for avoiding the centering bracket 40 corresponding thereto, specifically avoiding the elastic arm part 42 of the centering bracket 40, and the layout is reasonable, and the centering bracket 40 and the magnetic circuit unit 20 do not interfere with each other. Moreover, one side of the second voice coil 32 part is connected with the external circuit, realizing the conduction between the voice coil 32 and the external circuit.

[0126] In an embodiment, in each vibration unit 30, the centering bracket 40 is an electrically conductive centering bracket 40, and the second voice coil 32 part is connected with the external circuit through the centering bracket 40, thereby realizing the conduction between the second voice coil 32 part and the external circuit. Moreover, the centering bracket 40 can be electrically conductive, and the setting of other conductive parts is omitted, and the degree of integration is high, which is convenient for simplifying the structure.

[0127] As shown in FIG. 15, in another embodiment, in each vibration unit 30, the folded ring 312 is provided with an electrically conductive layer 3127 on one side surface facing the second voice coil 32 part, the second voice coil 32 part is electrically connected with the electrically conductive layer 3127, the shell 10 is injection molded with an electrically conductive terminal 12, and the electrically conductive layer 3127 and the electrically conductive terminal 12 are connected through conductive glue, so that the second voice coil 32 part is electrically connected with the external circuit through the electrically conductive layer 3127.

[0128] Specifically, the lower side surface of the folding ring 312 is provided with a conductive layer 3127, the second voice coil 32 part is connected with the conductive layer 3127, and the conductive layer 3127 is connected with the conductive terminal 12 on the shell 10 through conductive glue, the conductive terminal 12 is electrically connected with the external circuit, so that the second voice coil 32 part is electrically connected with the external circuit through the conductive layer 3127, realizing the conduction between the second voice coil 32 part and the external circuit. The conductive terminal 12 is injection molded on the shell 10, improving the integration and compactness of the shell 10. And the conductive layer 3127 on the surface of the folding ring 312 forms a conductive path 3128, so that the folding ring 312 also has electrical conductivity, and the structure integration is high.

[0129] As shown in FIGS. 2 and 3, the shell 10 includes a plastic support 13, a first metal plate 14 and a second metal plate 15 which are separately arranged on both sides of the plastic support 13 along the first direction, the plastic support 13, the first metal plate 14 and the second metal plate 15 form an accommodating space 11, the first magnetic assembly 21 is arranged on the first metal plate 14, and the second magnetic assembly 22 is arranged on the second metal plate 15.

[0130] Specifically, the first metal plate 14 and the second metal plate 15 are separately arranged on the upper and lower sides of the plastic support 13, the plastic support 13, the first metal plate 14 and the second metal plate 15 of the shell 10 form an accommodating space 11, and the structure design is reasonable. Moreover, the first magnetic assembly 21 is arranged on the first metal plate 14, and the second magnetic assembly 22 is arranged on the second metal plate 15, realizing the assembly between the shell 10 and the magnetic circuit unit 20. Moreover, the plastic support 13 is injection molded with the conductive terminal 12, improving the integration and compactness of the plastic support 13.

[0131] Further, the first metal plate 14 and / or the second metal plate 15 are made of magnetic conductive material, so that the first metal plate 14 and / or the second metal plate 15 have magnetic conductive ability, which is beneficial to the correction of magnetic lines.

[0132] As shown in FIGS. 2, 3, 5 and 7, in an embodiment, the plastic support 13 includes a first support 131 and a second support 132, the first support 131 and the second support 132 are designed in a split type along the first direction, i.e. along the up-down direction, facilitating disassembly and assembly. The first support 131, the second support 132, the first metal plate 14 and the second metal plate 15 form an accommodating space 11, the first support 131 surrounds the first magnetic assembly 21, the second support 132 surrounds the second magnetic assembly 22, and the second support 132 is injection molded with the conductive terminal 12, and the structure design is reasonable.

[0133] In an embodiment, in each vibration unit 30, the first coil part and the second coil part are wound by the same wire, the vibration plate 311 includes an inner vibration plate 3111 connected with the inner wall of the coil 32 and an outer vibration plate 3112 connected with the outer wall of the coil 32, and the inner vibration plate 3111 has a magnetic conductive part 3113, as shown in FIG. 20.

[0134] In this embodiment, the first coil part and the second coil part are designed in an integrated manner and are wound by the same wire, and are designed as a single coil 32, which is simple and convenient. The vibration plate 311 is separated by the coil 32 into an inner vibration plate 3111 and an outer vibration plate 3112, wherein the inner vibration plate 3111 is connected with the inner wall of the coil 32, and the outer vibration plate 3112 is connected with the outer wall of the coil 32, to realize the assembly of the coil 32 and the diaphragm 31. Moreover, the inner vibration plate 3111 has a magnetic conductive part 3113, and in the vibration process, due to the action of the magnetic conductive part 3113, the inner vibration plate 3111 can be subjected to the suction force of the first magnetic assembly 21 and the second magnetic assembly 22. Specifically, when the inner vibration plate 3111 vibrates towards the first magnetic assembly 21, the resultant force of the suction force of the first magnetic assembly 21 and the second magnetic assembly 22 on the magnetic conductive part 3113 points to the first magnetic assembly 21, which is beneficial to assisting the upward vibration of the inner vibration plate 3111. When the inner vibration plate 3111 vibrates towards the second magnetic assembly 22, the resultant force of the suction force of the first magnetic assembly 21 and the second magnetic assembly 22 on the magnetic conductive part 3113 points to the second magnetic assembly 22, which is beneficial to assisting the downward vibration of the inner vibration plate 3111. Thus, the design of the magnetic conductive part 3113 can assist the vibration of the inner vibration plate 3111, and improve the sound production effect.

[0135] In an embodiment, the inner vibration plate 3111 is a magnetic conductive plate member to form the magnetic conductive part 3113, i.e., the inner vibration plate 3111 itself is a magnetic conductive plate member with magnetic conductivity to form the magnetic conductive part 3113, without the need for additional magnetic conductive parts 3113, and the structure is simple.

[0136] In another embodiment, a magnetic conductive member is embedded in the inner vibration plate 3111 to form the magnetic conductive part 3113. The magnetic conductive member is embedded in the inner vibration plate 3111, and the structure is consistent and compact.

[0137] In yet another embodiment, a magnetic conductive member is provided on at least one side of the inner vibration plate 3111 along the first direction to form the magnetic conductive part 3113. For example, the magnetic conductive member is provided on the upper side of the inner vibration plate 3111. For example, the magnetic conductive member is provided on the lower side of the inner vibration plate 3111, as shown in FIG. 20. For example, the magnetic conductive member is provided on both the upper and lower sides of the inner vibration plate 3111.

[0138] In still another embodiment, at least one side surface of the inner vibrating plate 3111 in the first direction is coated with a magnetic conductive material to form a magnetic conductive portion 3113. For example, the upper side surface of the inner vibrating plate 3111 is coated with a magnetic conductive material. For another example, the lower side surface of the inner vibrating plate 3111 is coated with a magnetic conductive material. For still another example, both the upper and lower side surfaces of the inner vibrating plate 3111 are coated with a magnetic conductive material.

[0139] The formation and position of the magnetic conductive portion 3113 can be set according to actual needs, and the setting mode is various and has high flexibility.

[0140] The voice coil 32 includes a long axis side 323 and a short axis side 324 connected in sequence, and the plurality of magnetic circuit units 20 are arranged along the extension direction of the short axis side 324. Specifically, in an embodiment, the number of the accommodating spaces 11 is two, and the number of the magnetic circuit units 20 and the number of the vibrating units 30 are consistent with the number of the accommodating spaces 11 and are set one by one.

[0141] The number of the accommodating spaces 11 can be flexibly set according to actual needs, and in the embodiment, the number of the accommodating spaces 11 is set to two, which is not too much and is beneficial to realize the miniaturization design of the sound emitting unit 100.

[0142] In addition, the number of the accommodating spaces 11 is set to two, and correspondingly, the number of the magnetic circuit units 20 and the number of the vibrating units 30 are both two, and one magnetic circuit unit 20 and one vibrating unit 30 are arranged in each accommodating space 11. The two accommodating spaces 11 can be arranged side by side along the short axis side 324 of the voice coil 32. Understandably, the size of the short axis side 324 is shorter, and the size of the long axis side 323 is longer. The short axis side 324 occupies less space compared with the long axis side 323. Arranging the two accommodating spaces 11 side by side along the short axis side 324 of the voice coil 32 makes the size of the shell 10 not too long, and the structural design is highly reasonable.

[0143] As shown in FIGS. 1 to 3, the application further provides a sound emitting module 200, which includes the shell 50 and the above-mentioned sound emitting unit 100 accommodated in the shell 50. The shell 50 has a sound guide channel 55 for each vibrating unit 30 to radiate sound waves and a sound outlet hole 54 in communication with the sound guide channel 55. The shell 50 can accommodate the sound emitting unit 100, and the sound waves emitted by the vibrating unit 30 can pass through the sound guide channel 55 and the sound outlet hole 54 to realize normal sound emission of the sound emitting module 200.

[0144] Further, the shell 50 comprises a first module shell 52 and a second module shell 53 arranged along the first direction, and the first module shell 52 and the second module shell 53 enclose the accommodating cavity 51. The sound emitting unit 100 is accommodated in the accommodating cavity 51 and divides the accommodating cavity 51 into a front cavity 511 and a rear cavity 512. The shell 50 is provided with sound holes 54 corresponding to the vibration units 30, and the sound holes 54 are in communication with the front cavity 511. The sound waves of each vibration unit 30 are radiated to the outside through the corresponding sound hole 54, so as to realize normal sound emission of the sound emitting module 200.

[0145] The first module shell 52 and the second module shell 53 can be plastic shells, the first metal plate 14 is embedded in the first module shell 52, and the second metal plate 15 is embedded in the second module shell 53, so that the structure is compact.

[0146] As shown in FIGS. 18 and 19, in the assembling process of the sound emitting module 200, the first module shell 52 can be assembled with the first support 131, and the second module shell 53 can be assembled with the second support 132, so as to improve the assembling efficiency and convenience.

[0147] In an embodiment, the sound holes 54 are located on the same side of the side wall of the shell 50. It can be understood that the plurality of vibration units 30 correspond to the plurality of sound holes 54 and emit sound from the corresponding sound holes 54. The plurality of sound holes 54 are located on the same side of the side wall of the shell 50, which is beneficial for manufacturing and reasonable in design, and realizes sound emission of the sound emitting module 200 on the same side.

[0148] In an embodiment, the rear cavity 512 is filled with sound-absorbing material, the second module shell 53 is provided with a filling port for filling the sound-absorbing material, and the second module shell 53 is further provided with a damping member for covering the filling port. The rear cavity 512 is filled with sound-absorbing material, which can adjust the acoustic performance of the sound emitting module 200. The second module shell 53 is provided with the filling port, so as to realize filling of the sound-absorbing material in the rear cavity 512. After the filling is completed, the damping member covers the filling port, so as to avoid leakage of the sound-absorbing material.

[0149] In an embodiment, the first support 131 can adopt an integrated design or a split design. The first support 131 adopting the integrated design is convenient for manufacturing, omits assembling gaps and assembling errors, and has a compact structure. The first support 131 adopting the split design is convenient for disassembly and assembly, and has high flexibility. When the first support 131 adopts the split design, each accommodating space 11 is correspondingly provided with a first support 131.

[0150] As shown in FIGS. 16 and 17, the second support 132 can adopt an integrated design or a split design. The second support 132 adopting the integrated design is convenient for manufacturing, omits assembling gaps and assembling errors, and has a compact structure. The second support 132 adopting the split design is convenient for disassembly and assembly, and has high flexibility. When the second support 132 adopts the split design, each accommodating space 11 is correspondingly provided with a second support 132.

[0151] The plurality of vibration units 30 can respectively adopt independent back cavities 512 or share a back cavity 512, which can be flexibly set according to actual conditions.

[0152] The sound production module 200 can be a loudspeaker module, specifically a DPS loudspeaker module. The sound production module 200 can be applied in electronic devices such as computers, mobile phones, smart wearable devices, etc. The specific structure of the sound production unit 100 in the sound production module 200 is referred to the above embodiments. Since the sound production module 200 adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0153] The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A sound-emitting monomer, characterized in that, The sound-generating unit includes: A housing having a plurality of receiving spaces distributed along a second direction; A magnetic circuit system, the magnetic circuit system including a plurality of magnetic circuit units, each of the accommodating spaces correspondingly accommodating one of the magnetic circuit units, each magnetic circuit unit including a first magnetic component and a second magnetic component spaced apart along a first direction, the second direction being perpendicular to the first direction, the first magnetic component having a first magnetic gap, and the second magnetic component having a second magnetic gap; A vibration system comprising multiple vibration units, each magnetic circuit unit corresponding to one vibration unit, each vibration unit being disposed between the first magnetic component and the second magnetic component of the corresponding magnetic circuit unit, each vibration unit comprising a diaphragm and a voice coil connected to the diaphragm, the diaphragm comprising a vibrating plate and a folded ring disposed around the vibrating plate along a second direction, the voice coil comprising a first voice coil portion and a second voice coil portion located on both sides of the vibrating plate along the first direction, the first voice coil portion being located in the first magnetic gap of the corresponding magnetic circuit unit, and the second voice coil portion being located in the second magnetic gap of the corresponding magnetic circuit unit; In the first working state, at least one of the vibration units radiates sound waves of a first phase outward, and the remaining at least one vibration unit radiates sound waves of a second phase outward, wherein the first phase and the second phase are opposite phases.

2. The sound-generating unit as described in claim 1, characterized in that, In the first working state, two adjacent vibration components radiate sound waves of the first phase and the second phase respectively, wherein each vibration component includes one vibration unit or a plurality of adjacent vibration units, and the number of vibration units in two adjacent vibration components is the same or close.

3. The sound-generating unit as described in claim 1, characterized in that, In the second operating state, the plurality of vibration units radiate sound waves of the same phase outward, wherein the second operating state is different from the first operating state.

4. The sound-generating unit as described in claim 1, characterized in that, In each of the aforementioned vibration units, The first voice coil section and the second voice coil section are wound from the same wire, and the diaphragm includes an inner diaphragm connected to the inner wall of the voice coil and an outer diaphragm connected to the outer wall of the voice coil; Alternatively, the first voice coil portion and the second voice coil portion are wound from the same wire, and the diaphragm includes an inner diaphragm connected to the inner wall of the voice coil and an outer diaphragm connected to the outer wall of the voice coil. The inner diaphragm includes an inner flat plate portion and an inner bent portion that extends from the outer edge of the inner flat plate portion and connects to the inner wall of the voice coil, and / or the outer diaphragm includes an outer flat plate portion and an outer bent portion that extends from the inner edge of the outer flat plate portion and connects to the outer wall of the voice coil. Alternatively, the first voice coil portion and the second voice coil portion are wound from the same wire, and the diaphragm includes an inner diaphragm connected to the inner wall of the voice coil and an outer diaphragm connected to the outer wall of the voice coil, and one side of the second voice coil portion is connected to an external circuit. Alternatively, the first voice coil portion and the second voice coil portion may be formed by independently winding different wires.

5. The sound-generating unit as described in claim 1, characterized in that, In each of the aforementioned vibration units, The first voice coil section and the second voice coil section are wound from the same wire, and the diaphragm includes an inner diaphragm connected to the inner wall of the voice coil and an outer diaphragm connected to the outer wall of the voice coil; The diaphragm also includes a waterproof membrane, which is connected between the inner diaphragm and the outer diaphragm. The waterproof membrane is attached to and wrapped around the end of the second voice coil portion facing the second magnetic assembly.

6. The sound-generating unit as described in claim 1, characterized in that, In each of the vibration units, the folded ring includes a first connecting part, a deformation part, and a second connecting part connected sequentially along the second direction. The first connecting part is connected to the vibration plate, and the second connecting part is connected to the housing. The deformation part is recessed toward the side where the second magnetic component is located.

7. The sound-generating unit as described in claim 1, characterized in that, In each of the vibration units, the folded ring has a wave-shaped curved structure. The two ends of the folded ring along the first direction are a first end and a second end, respectively. The first end is connected to the edge of the vibration plate, and the second end is connected to the housing or the second magnetic component. The first end is disposed on the same side as the first magnetic component, and the second end is disposed on the same side as the second magnetic component.

8. The sound-generating unit as described in claim 7, characterized in that, The folded ring is connected to the side of the vibrating plate facing the second magnetic component, and the second end is arranged around the second magnetic component; And / or, the outline of the outer edge of the vibrating plate projected along the first direction is located outside the outline of the first magnetic circuit assembly projected along the first direction. And / or, the vibrating plate is bent and extended near its outer edge toward the first magnetic component to form a ramp structure, and the first magnetic component is provided with a clearance portion for avoiding the ramp structure.

9. The sound-generating unit as described in any one of claims 1 to 8, characterized in that, The first magnetic assembly includes a first inner magnet and a first outer magnet disposed along the second direction, and the first magnetic gap is formed between the first inner magnet and the first outer magnet; The second magnetic component includes a second inner magnet and a second outer magnet disposed along the second direction, and a second magnetic gap is formed between the second inner magnet and the second outer magnet.

10. The sound-generating unit as described in claim 9, characterized in that, In each of the magnetic circuit units, The magnetic poles of the first inner magnet and the second inner magnet are in opposite directions, the magnetic poles of the first outer magnet and the second outer magnet are in opposite directions, and the magnetic poles of the first inner magnet and the first outer magnet are in opposite directions. And / or, the first magnetic gap and the second magnetic gap are aligned along the first direction; And / or, the first external magnet is a ring magnet; And / or, the first inner magnet and the second inner magnet are arranged opposite to each other, and the first outer magnet and the second outer magnet are arranged opposite to each other.

11. The sound-generating unit as described in any one of claims 1 to 8, characterized in that, Each of the aforementioned vibration units further includes a centering support plate, which is disposed at the end of the second voice coil portion away from the diaphragm. The centering support plate includes an inner fixing portion, a spring arm portion, and an outer fixing portion connected sequentially along the second direction. The inner fixing portion is connected to the second voice coil portion, the outer fixing portion is connected to the housing, and the spring arm portion connects the inner fixing portion and the outer fixing portion. The second magnetic assembly has a clearance space for avoiding the spring arm portion of the corresponding centering support plate. One side of the second voice coil is connected to an external circuit; or, in each of the vibration units, the centering support is a conductive centering support, and the second voice coil is connected to the external circuit through the centering support.

12. The sound-generating unit as described in any one of claims 1 to 8, characterized in that, In each of the aforementioned vibration units, a conductive layer is provided on the side surface of the folded ring facing the second voice coil portion. The second voice coil portion is electrically connected to the conductive layer. A conductive terminal is injection molded on the housing. The conductive layer and the conductive terminal are connected by conductive adhesive, so that the second voice coil portion is electrically connected to an external circuit through the conductive layer.

13. The sound-generating unit as described in any one of claims 1 to 8, characterized in that, The housing includes a plastic bracket and a first metal plate and a second metal plate disposed on both sides of the plastic bracket along the first direction. The plastic bracket, the first metal plate and the second metal plate enclose the receiving space. The first magnetic component is disposed on the first metal plate and the second magnetic component is disposed on the second metal plate.

14. The sound-generating unit as described in claim 13, characterized in that, The first metal plate and / or the second metal plate are made of magnetically conductive material.

15. The sound-generating unit as described in claim 1, characterized in that, In each of the aforementioned vibration units, the first voice coil portion and the second voice coil portion are wound from the same wire, and the vibration plate includes an inner vibration plate connected to the inner wall of the voice coil and an outer vibration plate connected to the outer wall of the voice coil, and the inner vibration plate has a magnetically conductive portion.

16. The sound-generating unit as described in claim 15, characterized in that, The inner vibrating plate is a magnetically conductive plate to form the magnetically conductive part; Alternatively, a magnetic conductive element may be embedded inside the inner vibrating plate to form the magnetic conductive part; Alternatively, the inner vibrating plate may be provided with a magnetic conductive element on at least one side along the first direction to form the magnetic conductive part; Alternatively, at least one side surface of the inner vibrating plate along the first direction may be coated with a magnetically conductive material to form the magnetically conductive portion.

17. The sound-generating unit as described in any one of claims 1 to 8, characterized in that, The number of the accommodating spaces is two, and the number of the magnetic circuit units and the number of the vibration units are consistent with the number of the accommodating spaces and are set in a one-to-one correspondence.

18. A sound-generating module, characterized in that, It includes a housing and a sound-generating unit as described in any one of claims 1 to 17, housed within the housing.

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