Sound production monomer, sound production module and electronic equipment

Abstract

The utility model discloses a sounding monomer, sounding module and electronic equipment, relates to electroacoustic transduction technical field, the sounding monomer comprises a magnetic circuit system, a vibration system and a support member, the vibration system comprises a first vibration assembly and a second vibration assembly which are arranged on the same side of the magnetic circuit system and vibrate along a first direction, the support member is arranged on the magnetic circuit system, and the first vibration assembly and the second vibration assembly are arranged on the same side of the magnetic circuit system. The inner peripheral side of the first vibrating diaphragm assembly and the outer peripheral side of the second vibrating diaphragm assembly are both fixed to the supporting piece, and part of the first vibrating diaphragm assembly and part of the second vibrating diaphragm assembly are arranged in an overlapped mode in the first direction; wherein the sound production monomer has a first state; in the first state, the first vibration assembly and the second vibration assembly radiate sound waves with opposite phases outwards. The sound production single body can realize light and thin design, occupies a small assembly space, can realize the function of a loudspeaker with vibrating diaphragms arranged on two sides, and is ingenious and practical in structural design.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic transducer, and in particular to a sound-generating monomer and a sound-generating module and electronic equipment using the sound-generating monomer. Background Art

[0002] With the rapid development of science and technology, the popularity of audio equipment is increasing. People's requirements for audio equipment are not limited to video and audio playback, but also put forward more requirements for the comprehensive performance of audio equipment. Especially with the advent of the 5G era, mobile multimedia technology has also developed. Many audio devices have a variety of entertainment functions, such as video playback, digital camera, games, GPS navigation, etc., which require the electronic components in audio equipment to be more and more precise and compact.

[0003] As the requirements for electronic devices to be thin and light become higher and higher, the assembly space left for micro sound devices in electronic devices is getting smaller and smaller. In order to meet the requirements of acoustic performance, it is necessary to reserve a larger vibration space to meet the large amplitude requirements. In the related art, in order to meet the requirements of acoustic performance, a double-sided sound speaker is proposed. A set of vibration systems are respectively provided on the opposite sides of the magnetic circuit system of the double-sided sound speaker. Each set of vibration systems has an independent diaphragm assembly. The sound waves generated by the two sets of diaphragm assemblies are phase-cancelled in the far field to achieve a mute effect (DPS). However, in actual application, a larger space needs to be reserved for the vibration of the double-sided diaphragm assembly, resulting in a larger height of the double-sided sound speaker in the Z direction, which makes it difficult to make the height of the speaker and the corresponding module of this structure thin, and it is difficult to match the thin and light requirements of mobile phones. 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 provide a sound unit that effectively reduces the height in the Z direction. The sound unit is applied to the sound module or the electronic device to realize the function of double-sided sound emission and the effect of far-field sound elimination (DPS). The sound unit and the module can be designed ultra-thinly, and the assembly space occupied is small.

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

[0006] A magnetic circuit system, wherein the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap, wherein the first magnetic gap is located at an outer periphery of the second magnetic gap;

[0007] A vibration system, the vibration system comprising a first vibration component and a second vibration component which are arranged on the same side of the magnetic circuit system and vibrate along a first direction, the first vibration component comprising a first diaphragm component and a first voice coil, one end of the first voice coil is connected to the first diaphragm component, and the other end of the first voice coil is arranged corresponding to the first magnetic gap, the second vibration component comprising a second diaphragm component and a second voice coil, one end of the second voice coil is connected to the second diaphragm component, and the other end of the second voice coil is arranged corresponding to the second magnetic gap; and

[0008] A support member, the support member is arranged on the magnetic circuit system, the inner peripheral side of the first diaphragm assembly and the outer peripheral side of the second diaphragm assembly are both fixed to the support member, and along the first direction, part of the first diaphragm assembly and part of the second diaphragm assembly are overlapped;

[0009] Wherein, the sound-emitting monomer has a first state;

[0010] In the first state, the first vibration component and the second vibration component radiate sound waves of opposite phases to the outside.

[0011] In one embodiment, the first diaphragm assembly includes a first diaphragm, the first diaphragm includes an inner ring portion, an inner folded ring portion connected to the outer side of the inner ring portion, and an outer folded ring portion located outside the inner folded ring portion, the inner ring portion is connected to the support member and is formed with a hollow hole, and along the first direction, part of the second diaphragm assembly is opposite to the hollow hole.

[0012] In one embodiment, the first diaphragm further comprises a straight portion connected between the inner folding portion and the outer folding portion, and one end of the first voice coil is connected to the straight portion;

[0013] And / or, the inner folding ring portion and the outer folding ring portion are recessed in opposite directions;

[0014] And / or, the first diaphragm assembly further includes a vibration plate, the vibration plate is arranged between the inner folding ring portion and the outer folding ring portion, and one end of the first voice coil is connected to the vibration plate or the first diaphragm;

[0015] And / or, a side of the inner ring portion away from the inner folded ring portion is bent toward the magnetic circuit system to form a first flange, and the first flange is connected to the support member and surrounds the hollow hole to form the hollow hole.

[0016] In one embodiment, the second diaphragm assembly includes a second diaphragm, the second diaphragm includes a central portion, a folded ring portion arranged around the central portion, and an external fixing portion located outside the folded ring portion, the external fixing portion is connected to the support member, and one end of the second voice coil is connected to the central portion.

[0017] In one embodiment, along the first direction, the central portion is opposite to the hollow hole;

[0018] And / or, along the first direction, at least a portion of the folded ring portion is opposite to the hollow hole.

[0019] In one embodiment, the outer side of the outer fixing portion is bent toward the magnetic circuit system to form a second flange, and the second flange is connected to the support member;

[0020] And / or, the protruding direction of the folding ring portion is opposite to the protruding direction of the inner folding ring portion;

[0021] And / or, the central portion is provided with a hollow hole, and the second diaphragm assembly further comprises a spherical top, and the spherical top is connected to the central portion to cover the hollow hole;

[0022] And / or, the distance from one end of the folding ring portion connected to the outer fixing portion to the central axis of the sound-emitting unit is not less than the distance from one end of the inner folding ring portion connected to the inner ring portion to the central axis of the sound-emitting unit.

[0023] In one embodiment, the support member includes a main body portion, the main body portion includes a first supporting portion and a second supporting portion arranged at an angle, the end of the first supporting portion away from the second supporting portion is connected to the magnetic circuit system, at least a portion of the second supporting portion extends in a direction close to the second voice coil, and the inner peripheral side of the first diaphragm assembly and the outer peripheral side of the second diaphragm assembly are both connected to the second supporting portion.

[0024] In one embodiment, the second supporting portion includes an upper surface and a lower surface spaced apart along the first direction, the inner peripheral side of the first diaphragm assembly is connected to the upper surface, and the outer peripheral side of the second diaphragm assembly is connected to the lower surface.

[0025] In one embodiment, the second supporting portion further includes an inner surface connecting the upper surface and the lower surface, the inner peripheral side of the first diaphragm assembly is bent toward the magnetic circuit system to form a first flange, and the first flange is connected to the inner surface;

[0026] And / or, the first supporting portion has an inner wall connected to the lower surface and extending along the first direction, and the outer peripheral side of the second diaphragm assembly is bent toward the magnetic circuit system to form a second flange, and the second flange is connected to the inner wall.

[0027] In one embodiment, the support member includes a main body and a plurality of connection parts arranged on the periphery of the main body, and the inner periphery of the first diaphragm assembly and the outer periphery of the second diaphragm assembly are both connected to the main body;

[0028] The sound unit also includes a first centering support plate and a second centering support plate, wherein two ends of the first centering support plate are respectively connected to the first voice coil and a part of the connecting portion, and two ends of the second centering support plate are respectively connected to the second voice coil and another part of the connecting portion.

[0029] In one embodiment, the main body is in a square ring shape, and the plurality of connecting parts are respectively disposed at the four corners of the main body and extend outward relative to the main body;

[0030] And / or, the first centering support plates include two, and the two first centering support plates are symmetrically arranged at diagonal positions of the main body;

[0031] And / or, the second centering support plates include two, and the two second centering support plates are symmetrically arranged at diagonal positions of the main body;

[0032] And / or, along the circumferential direction of the main body, the first centering support pieces and the second centering support pieces are distributed alternately.

[0033] In one embodiment, the magnetic circuit system is provided with a plurality of avoidance gaps connecting the first magnetic gap and the second magnetic gap, and the first centering support plate and the second centering support plate are respectively arranged in the corresponding avoidance gaps.

[0034] In one embodiment, the magnetic circuit system is further provided with a through hole corresponding to the avoidance gap, and the sound-emitting unit also includes a flexible circuit board arranged on the side of the magnetic circuit system facing away from the vibration system, and the flexible circuit board includes a main body and an extension part connected to the main body, one end of the extension part passes through the through hole and is electrically connected to the first centering support plate and / or the second centering support plate.

[0035] In one embodiment, a side of the magnetic circuit system facing away from the vibration system is further provided with a recessed groove corresponding to the flexible circuit board, and the flexible circuit board is accommodated in the recessed groove;

[0036] And / or, the sound-emitting unit further includes a mesh cloth, and the mesh cloth covers the through hole.

[0037] In one embodiment, the magnetic circuit system includes a yoke and a central magnetic portion, a first side magnetic portion, and a second side magnetic portion arranged on the same side of the yoke, the first side magnetic portion is located on the outside of the central magnetic portion and is spaced from the central magnetic portion to form the second magnetic gap, and the second side magnetic portion is located on the outside of the first side magnetic portion and is spaced from the first side magnetic portion to form the first magnetic gap.

[0038] In one embodiment, the first side magnetic parts include a plurality of first side magnetic parts, the plurality of first side magnetic parts are arranged around the central magnetic part, and two adjacent first side magnetic parts are spaced to form an avoidance gap, and part of the support members are arranged corresponding to the avoidance gap;

[0039] And / or, the second edge magnet part forms a closed integral ring structure; or, the second edge magnet part includes a plurality of adjacent second edge magnet parts, and the adjacent second edge magnet parts are connected end to end to form a closed ring structure;

[0040] And / or, the support member is arranged on the first edge magnetic portion.

[0041] In one embodiment, the sound-emitting unit further comprises a shell, one end of the shell is connected to the magnetic circuit system, and the other end of the shell is connected to the outer periphery of the first diaphragm assembly;

[0042] The sound unit further includes a first centering support plate and a second centering support plate, wherein two ends of the first centering support plate are respectively connected to the first voice coil and the housing, and two ends of the second centering support plate are respectively connected to the second voice coil and the supporting member.

[0043] In one embodiment, the sound-emitting unit further has a second state;

[0044] In the second state, the first vibration component and the second vibration component radiate sound waves of the same phase outwardly;

[0045] And / or, in the first state, the vibration directions of the first vibration component and the second vibration component are opposite; in the second state, the vibration directions of the first vibration component and the second vibration component are the same.

[0046] The utility model also proposes a sound module, which includes a module shell and the above-mentioned sound unit, wherein the sound unit is arranged in the module shell, and the module shell is provided with a first sound channel corresponding to the first vibration component of the sound unit and a second sound channel corresponding to the second vibration component of the sound unit, and the first sound channel and the second sound channel are isolated from each other.

[0047] The utility model also provides an electronic device, the electronic device comprising the above-mentioned sound-emitting unit;

[0048] Alternatively, the electronic device includes the sound module described above.

[0049] The sound-emitting unit of the technical solution of the utility model is achieved by arranging a first magnetic gap and a second magnetic gap at intervals on the magnetic circuit system, and making the first magnetic gap located on the periphery of the second magnetic gap, and setting the vibration system as a first vibration component and a second vibration component located on the same side of the magnetic circuit system, so that the first vibration component and the second vibration component vibrate along a first direction, thereby realizing the structure of the double vibration components being arranged on the same side of the sound-emitting unit, so that it is only necessary to reserve vibration space for the vibration system on one side of the sound-emitting unit, and there is no need to reserve vibration space on both sides of the sound-emitting unit respectively, thereby effectively reducing the height of the sound-emitting unit in the Z direction; at the same time, the first vibration component and the second vibration component are arranged on the same side of the magnetic circuit system, that is, the first vibration component and the second vibration component are arranged on the same side of the magnetic circuit system. The moving components share a magnetic circuit system, which effectively simplifies the structural setting of the magnetic circuit system. It only needs to set a support on the magnetic circuit system so that the inner side of the first diaphragm assembly and the outer side of the second diaphragm assembly are fixed to the support. Therefore, the first vibration assembly and the second vibration assembly of the vibration system can be installed and fixed while sharing a magnetic circuit system, so that the magnetic circuit system and the vibration system are more compact in design and the volume of the sound-emitting unit is reduced. Furthermore, by fixing the inner side of the first diaphragm assembly and the outer side of the second diaphragm assembly to the support, and overlapping part of the first diaphragm assembly and part of the second diaphragm assembly along the first direction, the vibration radiation area of ​​the vibration system can be effectively increased, and the sound effect of the sound-emitting unit can be improved. It can be understood that by arranging the first vibration component and the second vibration component on the same side of the magnetic circuit system and vibrating along the first direction, the first vibration component and the second vibration component can work independently at the same time, so that the sound-emitting unit has a first state in which the first vibration component and the second vibration component simultaneously radiate sound waves of opposite phases. As a result, the sound waves of opposite phases generated by the first vibration component and the second vibration component can cancel each other out in the far field to achieve a silencing effect, thereby improving the call privacy of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] 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.

[0051] Figure 1 A schematic diagram of the structure of an embodiment of a sound-emitting unit provided by the utility model;

[0052] Figure 2 A structural schematic diagram of another perspective of an embodiment of a sound-emitting unit provided by the utility model;

[0053] Figure 3This is an exploded schematic diagram of an embodiment of a sound-generating unit provided by the utility model;

[0054] Figure 4 A schematic diagram of a top view of the structure of an embodiment of a sound-emitting unit provided by the utility model;

[0055] Figure 5 for Figure 4 Schematic diagram of the cross section in the AA direction;

[0056] Figure 6 for Figure 4 Schematic diagram of the cross section in the BB direction;

[0057] Figure 7 for Figure 2 A schematic diagram of the structure of the sound-generating unit without the flexible circuit board and mesh;

[0058] Figure 8 for Figure 7 A schematic cross-sectional view of the sound-producing unit along the long axis direction;

[0059] Fig. 9 for Figure 8 The enlarged schematic diagram of the center C;

[0060] Fig.10 A bottom-up structural schematic diagram of an embodiment of a sound-emitting unit provided by the utility model without the yoke;

[0061] Fig.11 A schematic diagram of the structure of an embodiment of a sound-generating unit provided by the utility model without the magnetic circuit system;

[0062] Fig.12 A structural schematic diagram of an embodiment of a support member provided by the utility model;

[0063] Fig.13 A schematic structural diagram of an embodiment of a first centering support piece / a second centering support piece provided by the utility model;

[0064] Fig.14 A structural schematic diagram of another embodiment of the first centering support piece / the second centering support piece provided by the utility model;

[0065] Fig.15 A schematic structural diagram of an embodiment of a flexible circuit board provided by the utility model;

[0066] Fig.16 A cross-sectional schematic diagram of an embodiment of a sound module provided by the utility model;

[0067] Fig.17 A cross-sectional schematic diagram of another embodiment of the sound module provided by the utility model.

[0068] Description of Figure Numbers:

[0069] 100, sound-generating unit; 1, housing; 2, magnetic circuit system; 21, yoke; 211, through hole; 212, recessed groove; 22, central magnetic part; 23, first side magnetic part; 231, second magnetic gap; 232, avoidance gap; 24, second side magnetic part; 241, first magnetic gap; 3, vibration system; 31, first vibration component; 311, first diaphragm component; 3111, first diaphragm; 3112, inner ring; 3113, hollow hole; 3114, first flange; 3115, inner folding ring; 3116, outer folding ring; 3117, straight part; 3118, outer bending part; 3119, vibration plate; 312, first voice coil; 32, second vibration component; 321, second diaphragm component; 3211, second diaphragm; 3212 , central part; 3213, hollow hole; 3214, folding ring part; 3215, outer fixing part; 3216, second flange; 3217, dome; 322, second voice coil; 4, support member; 41, main body; 411, first supporting part; 4111, inner wall; 412, second supporting part; 4121, upper surface; 4122, lower surface; 4123, inner surface; 42, connecting part; 51, first centering support piece; 511, first fixing part; 512, second fixing part; 513, elastic part; 52, second centering support piece; 6, flexible circuit board; 61, main body; 62, extension part; 7, mesh; 800, module shell; 810, first sound channel; 820, second sound channel; 830, isolation member; 900, sound module.

[0070] 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

[0071] 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.

[0072] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0073] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0074] In addition, in the present utility model, descriptions such as "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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0075] The utility model provides a sound unit 100. It can be understood that the sound unit 100 is applied to an electronic device or a terminal device, and the electronic device can be a headset, VR, AR, Glass, etc., which is not limited here. The terminal device can be a vehicle or other equipment, which is not limited here.

[0076] Please refer to Figures 1 to 15 As shown, in the embodiment of the utility model, the sound-emitting monomer 100 includes a magnetic circuit system 2, a vibration system 3 and a support 4, the magnetic circuit system 2 is provided with a first magnetic gap 241 and a second magnetic gap 231, the first magnetic gap 241 is located at the periphery of the second magnetic gap 231, the vibration system 3 includes a first vibration component 31 and a second vibration component 32 which are arranged on the same side of the magnetic circuit system 2 and vibrate along a first direction, the first vibration component 31 includes a first diaphragm component 311 and a first voice coil 312, one end of the first voice coil 312 is connected to the first diaphragm component 311, and the other end of the first voice coil 312 is arranged corresponding to the first magnetic gap 241, and the first magnetic gap 241 is located at the periphery of the second magnetic gap 231. The second vibration component 32 includes a second diaphragm component 321 and a second voice coil 322, one end of the second voice coil 322 is connected to the second diaphragm component 321, and the other end of the second voice coil 322 is arranged corresponding to the second magnetic gap 231, the support member 4 is arranged on the magnetic circuit system 2, the inner peripheral side of the first diaphragm component 311 and the outer peripheral side of the second diaphragm component 321 are both fixed to the support member 4, and along the first direction, part of the first diaphragm component 311 and part of the second diaphragm component 321 are overlapped; wherein, the sound unit 100 has a first state; in the first state, the first vibration component 31 and the second vibration component 32 radiate sound waves of opposite phases outward.

[0077] In this embodiment, the sound-emitting unit 100 may be a sound-emitting unit of a speaker, and the speaker may be a micro speaker. It should be noted that the magnetic circuit system 2 and the vibration system 3 of the sound-emitting unit 100 are arranged relative to each other. Optionally, the magnetic circuit system 2 may be arranged in a square shape. Optionally, the vibration system 3 may also be arranged in a square shape. It is understandable that the periphery of the vibration system 3 may be connected to the magnetic circuit system 2, or the magnetic circuit system 2 and the vibration system 3 may be respectively assembled on the outer shell or the module shell, etc., which is not limited here.

[0078] In order to better assemble the magnetic circuit system 2 and the vibration system 3 of the sound unit 100. In one embodiment, as Figures 1 to 3 , Figures 5 to 8 , Fig.10 and Fig.11 As shown, the sound unit 100 also includes a shell 1, a magnetic circuit system 2 is connected to one end of the shell 1, and a vibration system 3 is connected to the other end of the shell 1 and arranged opposite to the magnetic circuit system 2, that is, the periphery of the vibration system 3 is connected to the other end of the shell 1 and arranged opposite to the magnetic circuit system 2.

[0079] In this embodiment, the housing 1 is used to install, fix and support components such as the magnetic circuit system 2 and the vibration system 3, that is, the housing 1 provides an installation base for components such as the magnetic circuit system 2 and the vibration system 3. It can be understood that the housing 1 can be an integral structure or can be formed by the cooperation of multiple split structures, which is not limited here. The housing 1 in this embodiment can be selected as a square frame or frame structure, that is, the housing 1 has a cavity with openings at both ends, and the magnetic circuit system 2 and the vibration system 3 are respectively connected to the two sides of the housing 1 and are arranged relative to each other, so that the magnetic circuit system 2, the housing 1 and the diaphragm assembly 31 of the vibration system 3 enclose a vibration cavity.

[0080] It can be understood that the sound unit 100 is used in electronic devices, that is, the sound unit 100 can be installed in the electronic device through the housing 1. It should be noted that the housing 1 of the sound unit 100 can be a housing or box structure independent of the electronic device. In this case, the housing 1 is used to integrate the magnetic circuit system 2 and the vibration system 3 of the sound unit 100 into an integral structure, so as to facilitate disassembly and assembly. Of course, the housing 1 of the sound unit 100 can also be an integrally formed structure with the housing or box structure of the electronic device, which can effectively improve the structural strength and sealing performance.

[0081] In this embodiment, the housing 1 is used to accommodate and fix the vibration system 3 and the magnetic circuit system 2 and other structures, so that the sound unit 100 can be used as an independent component in an electronic device or a sound module, which is not limited here. Of course, in other embodiments, the vibration system 3 and the magnetic circuit system 2 and other structures can be installed on the housing 1 of the module structure as multiple independent components, which is not limited here.

[0082] It can be understood that by setting the first magnetic gap 241 and the second magnetic gap 231 spaced apart on the magnetic circuit system 2, and making the first magnetic gap 241 located on the periphery of the second magnetic gap 231, and setting the vibration system 3 to be located on the same side of the magnetic circuit system 2 as the first vibration component 31 and the second vibration component 32, so that the first vibration component 31 and the second vibration component 32 vibrate along the first direction, the dual vibration component same-side arrangement structure of the sound-emitting unit 100 is realized, so that it is only necessary to reserve vibration space for the vibration system 3 on one side of the sound-emitting unit 100, and there is no need to reserve vibration space on both sides of the sound-emitting unit 100, thereby effectively reducing the height of the sound-emitting unit 100 in the Z direction. At the same time, the first vibration component 31 and the second vibration component 32 are arranged on the same side of the magnetic circuit system 2, that is, the first vibration component 31 and the second vibration component 32 share a magnetic circuit system 2, which effectively simplifies the structural setting of the magnetic circuit system 2. It is only necessary to set a support member 4 on the magnetic circuit system 2 so that the inner peripheral side of the first diaphragm component 311 and the outer peripheral side of the second diaphragm component 321 are fixed to the support member 4, so that the first vibration component 31 and the second vibration component 32 of the vibration system 3 can be installed and fixed while sharing a magnetic circuit system 2, making the design of the magnetic circuit system 2 and the vibration system 3 more compact and reducing the volume of the sound unit 100.

[0083] In this embodiment, the inner side of the first diaphragm assembly 311 and the outer side of the second diaphragm assembly 321 are fixed to the support member 4, and part of the first diaphragm assembly 311 and part of the second diaphragm assembly 321 are overlapped along the first direction. This can effectively increase the vibration radiation area of ​​the vibration system 3 and enhance the sound effect of the sound unit 100.

[0084] It can be understood that by arranging the first vibration component 31 and the second vibration component 32 on the same side of the magnetic circuit system 2 and vibrating along the first direction, the first vibration component 31 and the second vibration component 32 can work independently at the same time, so that the sound unit 100 has a first state in which the first vibration component 31 and the second vibration component 32 simultaneously radiate sound waves of opposite phases and a second state in which the first vibration component 31 and the second vibration component 32 simultaneously radiate sound waves of the same phase.

[0085] It should be noted that the sound-emitting monomer 100 is applied to the sound module or electronic device, that is, the sound-emitting monomer 100 is installed in the shell of the sound module or the electronic device, so that the vibration system 3 faces away from the magnetic circuit system 2 and cooperates with the shell of the sound module or the electronic device to form a front sound cavity. It can be understood that in order to avoid the mutual interference of the sounds emitted by the first vibration component 31 and the second vibration component 32 working at the same time, in this embodiment, the shell of the electronic device is used to cooperate with the first vibration component 31 and the second vibration component 32 to form two mutually isolated front sound channels or front sound cavity structures, so as to effectively avoid the mutual interference of the two sound waves, which is not limited here. Of course, in other embodiments, an isolation member can also be set between the first vibration component 31 and the second vibration component 32, and the isolation member can be used to isolate the sound of the first vibration component 31 and the second vibration component 32, which is not limited here.

[0086] In this embodiment, the sound-emitting monomer 100 has two working states, that is, the sound-emitting monomer 100 has a first state and a second state. In the first state, the first vibration component 31 and the second vibration component 32 radiate sound waves of opposite phases outwardly; in the second state, the first vibration component 31 and the second vibration component 32 radiate sound waves of the same phase outwardly. It can be understood that the sound-emitting monomer 100 is applied to electronic devices. When the electronic device is in the handset mode, the sound-emitting monomer 100 is in the first state, which can achieve the effect of quiet calls without sound leakage; and when the electronic device is in the external speaker mode, the sound-emitting monomer 100 is in the second state, thereby improving the external speaker effect of the electronic device.

[0087] It should be noted that when the sound-emitting unit 100 is in the second state, the first vibration component 31 and the second vibration component 32 are used to radiate sound waves of the same phase outward, thereby increasing the sound effect, which can enable the electronic device to achieve an external speaker mode with a higher volume and better sound effect. When the sound-emitting unit 100 is in the first state, the first vibration component 31 and the second vibration component 32 are used to radiate sound waves of opposite phases outward, forming a dipole effect in the far field (for example, a distance of 20cm to 50cm from the human ear), that is, the anti-phase sound waves radiated by the first vibration component 31 and the second vibration component 32 are canceled in the far field, thereby achieving a quiet call without sound leakage.

[0088] In one embodiment, in the first state, the first vibration component 31 and the second vibration component 32 have opposite vibration directions; in the second state, the first vibration component 31 and the second vibration component 32 have the same vibration direction.

[0089] It should be noted that the vibration mode setting of the vibration system 3 of the above-mentioned sound-emitting unit 100 is a relatively common implementation form. Under this structural design, the sound waves of the first vibration component 31 and the second vibration component 32 will not be refracted during the propagation process. Of course, in other embodiments, the refraction of sound waves can be achieved by designing structures such as sound pipes to achieve the effect of changing the phase of the sound waves of the first vibration component 31 and the second vibration component 32. Therefore, the vibration direction of the vibration system 3 in the two modes is not limited.

[0090] In this embodiment, the first vibration component 31 is set as the first diaphragm component 311 and the first voice coil 312, so that one end of the first voice coil 312 is connected to the first diaphragm component 311, and the other end of the first voice coil 312 is set corresponding to the first magnetic gap 241, and the second vibration component 32 is set as the second diaphragm component 321 and the second voice coil 322, so that one end of the second voice coil 322 is connected to the second diaphragm component 321, and the other end of the second voice coil 322 is set corresponding to the second magnetic gap 231. In this way, current can be introduced into the first voice coil 312 and the second voice coil 322 respectively, so that the first voice coil 312 and the second voice coil 322 act in the magnetic field formed by the first magnetic gap 241 and the second magnetic gap 231 of the magnetic circuit system 2 respectively, so that the first voice coil 312 and the second voice coil 322 respectively drive the first diaphragm component 311 and the second diaphragm component 321 to vibrate and make sound, thereby realizing that the first vibration component 31 and the second vibration component 32 work independently at the same time, so that the sound-emitting unit 100 has a first state and a second state.

[0091] It can be understood that the first voice coil 312 can be a flat voice coil, in which case it is fixed to the side of the first diaphragm assembly 311 facing the magnetic circuit system 2, and is opposite to and spaced from the first magnetic gap 241 of the magnetic circuit system 2, that is, the other end of the first voice coil 312 is located outside the first magnetic gap 241, and along the vibration direction of the vibration system 3, the other end of the first voice coil 312 is opposite to the first magnetic gap 241; or, the first voice coil 312 is an annular runway voice coil, in which case one end of the first voice coil 312 is connected to the first diaphragm assembly 311, and the other end of the first voice coil 312 is suspended in the first magnetic gap 241, which is not limited here. The second voice coil 322 can be a flat voice coil, in which case it is fixed to the side of the second diaphragm assembly 321 facing the magnetic circuit system 2, and is opposite to and spaced from the second magnetic gap 231 of the magnetic circuit system 2, that is, the other end of the second voice coil 322 is located outside the second magnetic gap 231, and along the vibration direction of the vibration system 3, the other end of the second voice coil 322 is opposite to the second magnetic gap 231; or, the second voice coil 322 is an annular runway voice coil, in which case one end of the second voice coil 322 is connected to the second diaphragm assembly 321, and the other end of the second voice coil 322 is suspended in the second magnetic gap 231, which is not limited here.

[0092] Optionally, the first voice coil 312 and the second voice coil 322 are rectangular voice coils or annular racetrack voice coils, and the shape profile of the first magnetic gap 241 is comparable or similar to the shape profile of the first voice coil 312, that is, the first magnetic gap 241 is also a rectangular magnetic gap or annular racetrack magnetic gap. The shape profile of the second magnetic gap 231 is comparable or similar to the shape profile of the second voice coil 322, that is, the second magnetic gap 231 is also a rectangular magnetic gap or annular racetrack magnetic gap. In this embodiment, the first magnetic gap 241 is located at the periphery of the second magnetic gap 231, that is, the first voice coil 312 is located at the periphery of the second voice coil 322.

[0093] In this embodiment, the support member 4 is arranged on the side of the magnetic circuit system 2 facing the vibration system 3, so that the support member 4 can be used to support and fix the first vibration component 31 and the second vibration component 32 of the vibration system 3, which can not only realize the installation and fixation of the vibration system 3, but also ensure the vibration space of the first vibration component 31 and the second vibration component 32, and avoid the first vibration component 31 and the second vibration component 32 from interfering with the magnetic circuit system 2 during vibration.

[0094] Optionally, the support member 4 may be made of metal, plastic, or injection molded from metal and plastic, which is not limited here.

[0095] In one embodiment, the first diaphragm assembly 311 includes a first diaphragm 3111, the first diaphragm 3111 includes an inner ring portion 3112, an inner folding ring portion 3115 connected to the outer side of the inner ring portion 3112, and an outer folding ring portion 3116 located outside the inner folding ring portion 3115, the inner ring portion 3112 is connected to the support member 4, and a hollow hole 3113 is formed, and along the first direction, a portion of the second diaphragm assembly 321 is opposite to the hollow hole 3113.

[0096] In this embodiment, if Figure 1 , Figures 3 to 6 , Figure 8 As shown, by setting the first diaphragm 3111 of the first diaphragm assembly 311 as a double folded ring structure, that is, the outer folded ring portion 3116 of the first diaphragm 3111 is located on the outer side of the inner folded ring portion 3115, and the inner ring portion 3112 is arranged on the inner side of the inner folded ring portion 3115, so that the inner ring portion 3112 is conveniently connected and fixed to the support member 4, and at the same time, the effective vibration area of ​​the first diaphragm 3111 can be increased to improve the sound effect. It can be understood that the periphery of the first diaphragm assembly 311 is connected to the magnetic circuit system 2 or the housing 1, so that the first diaphragm assembly 311 is installed and fixed.

[0097] It is understandable that, in order to facilitate the connection between the periphery of the first diaphragm assembly 311 and the magnetic circuit system 2 or the housing 1, a fixing portion is also provided on the outer side of the outer folding ring portion 3116 of the first diaphragm 3111, and the first diaphragm 3111 is connected to the magnetic circuit system 2 or the housing 1 through the fixing portion. It should be noted that, in order to increase the connection stability and increase the effective vibration area of ​​the first diaphragm 3111, the fixing portion can be formed by extending from the outer side of the outer folding ring portion 3116 toward the side away from the inner folding ring portion 3115, and bending and extending toward the vibration direction of the first diaphragm 3111, that is, the fixing portion can be optionally arranged in an L-shape; or, the fixing portion can be formed by bending and extending from the outer side of the outer folding ring portion 3116 toward the vibration direction of the first diaphragm 3111, which is not limited here.

[0098] In order to facilitate the connection between the first diaphragm 3111 and the first voice coil 312 and improve the connection stability, in one embodiment, the first diaphragm 3111 also includes a straight portion 3117 connected between the inner folding ring portion 3115 and the outer folding ring portion 3116, and one end of the first voice coil 312 is connected to the straight portion 3117.

[0099] In this embodiment, if Figure 1 , Figures 3 to 6 , Figure 8 As shown, a straight portion 3117 is provided between the inner folding ring portion 3115 and the outer folding ring portion 3116, so that the straight portion 3117 is connected to the first voice coil 312. This can not only improve the connection stability of the first voice coil 312, but also prevent the vibration of the first voice coil 312 from affecting the vibration and buffering effect of the inner folding ring portion 3115 and the outer folding ring portion 3116 of the first diaphragm 3111.

[0100] Optionally, the first diaphragm 3111 is an integrally formed structure. In this embodiment, the inner ring portion 3112, the inner folded ring portion 3115, the straight portion 3117 and the outer folded ring portion 3116 are an integrally formed structure, which can improve the structural strength of the first diaphragm 3111.

[0101] In order to further improve the structural strength and stability of the first diaphragm 3111, in one embodiment, the first diaphragm assembly 311 also includes a vibration plate 3119, and the vibration plate 3119 is arranged between the inner folding ring portion 3115 and the outer folding ring portion 3116, and one end of the first voice coil 312 is connected to the vibration plate 3119 or the first diaphragm 3111.

[0102] In this embodiment, if Figure 3 , Figure 5 , Figure 6 , Figure 8 and Fig. 9As shown, by arranging a vibration plate 3119 on the first diaphragm 3111, the vibration plate 3119 is used to improve the structural strength of the first diaphragm 3111, so as to avoid tearing the first diaphragm 3111 during the vibration of the first voice coil 312. Optionally, the vibration plate 3119 is arranged between the inner folding ring portion 3115 and the outer folding ring portion 3116, that is, the vibration plate 3119 is connected to the straight portion 3117 of the first diaphragm 3111, so that the structural strength of the straight portion 3117 can be strengthened. Optionally, the vibration plate 3119 is connected to the side of the straight portion 3117 facing the first voice coil 312, that is, one end of the first voice coil 312 is connected to the vibration plate 3119. Of course, in other embodiments, the vibration plate 3119 is connected to the side of the straight portion 3117 facing away from the first voice coil 312, and at this time, one end of the first voice coil 312 is connected to the straight portion 3117, which is not limited here.

[0103] It should be noted that in order to facilitate the vibration and sound of the second vibration component 32 arranged on the same side of the magnetic circuit system 2, a hollow hole 3113 is provided in the center of the first diaphragm 3111 of the first diaphragm component 311. Along the first direction, at least part of the second diaphragm component 321 corresponds to the hollow hole 3113, that is, at least part of the second diaphragm component 321 is exposed in the hollow hole 3113, so that the sound generated by the second diaphragm component 321 can be conveniently transmitted through the hollow hole 3113.

[0104] It can be understood that the inner ring portion 3112 is connected to the support member 4 and forms a hollow hole 3113, and a portion of the second diaphragm assembly 321 is exposed in the hollow hole 3113. In order to improve the connection stability between the inner ring portion 3112 and the support member 4, in one embodiment, the side of the inner ring portion 3112 away from the inner folding ring portion 3115 is bent toward the magnetic circuit system 2 to form a first flange 3114, and the first flange 3114 is connected to the support member 4 and surrounds the hollow hole 3113.

[0105] In this embodiment, if Figure 3 , Figure 5 , Figure 6 , Figure 8 and Fig. 9 As shown, the inner ring portion 3112 is bent at one side away from the inner folded ring portion 3115 to form a first flange 3114, so that the first flange 3114 and the inner ring portion 3112 are both connected to the support member 4, thereby increasing the connection area, improving the connection stability and the sealing effect. It can be understood that in order to facilitate the support member 4 to simultaneously fix the first diaphragm assembly 311 and the second diaphragm assembly 321, the support member 4 can be optionally arranged in a ring shape, which is not limited here.

[0106] It is understandable that the inner folding portion 3115 and the outer folding portion 3116 of the first diaphragm 3111 can be selected as a convex structure that bulges upward or a concave structure that sinks downward. The convex direction of the inner folding portion 3115 of the first diaphragm 3111 is the same as or different from the convex direction of the outer folding portion 3116. Optionally, the concave directions of the inner folding portion 3115 and the outer folding portion 3116 are opposite, that is, the convex direction of the inner folding portion 3115 is opposite to the convex direction of the outer folding portion 3116.

[0107] In order to avoid interference between the protruding direction of the inner folding ring portion 3115 and the support member 4 and increase the amplitude of the first diaphragm 3111, the inner folding ring portion 3115 may optionally protrude upward, and the outer folding ring portion 3116 may optionally protrude downward. Of course, in other embodiments, the inner folding ring portion 3115 may optionally protrude upward, and the outer folding ring portion 3116 may optionally protrude upward, which is not limited here.

[0108] It should be noted that when the sound unit 100 is installed in the shell of a sound module or an electronic device, the outer folding ring portion 3116 protrudes downward, which can avoid interference between the outer folding ring portion 3116 and the shell, and at the same time increase the sound duct space or the front cavity space, thereby improving the sound effect.

[0109] In one embodiment, the second diaphragm assembly 321 includes a second diaphragm 3211, the second diaphragm 3211 includes a central portion 3212, a folded ring portion 3214 arranged around the central portion 3212, and an external fixing portion 3215 located outside the folded ring portion 3214, the external fixing portion 3215 is connected to the support member 4, and one end of the second voice coil 322 is connected to the central portion 3212.

[0110] In this embodiment, if Figure 1 , Figures 3 to 6 , Figure 8 and Fig. 9 As shown, by setting the second diaphragm 3211 of the second diaphragm assembly 321 as a single folded ring structure, that is, the second diaphragm 3211 includes a central portion 3212, a folded ring portion 3214 and an outer fixing portion 3215 connected in sequence, the second diaphragm 3211 is supported and fixed to the support member 4 through the outer fixing portion 3215, thereby achieving installation and fixation.

[0111] It can be understood that the second diaphragm 3211 is an integrally formed structure. Optionally, the central portion 3212, the folded ring portion 3214 and the outer fixing portion 3215 are an integrally formed structure, which can improve the vibration performance and structural strength of the second diaphragm 3211. In this embodiment, one end of the second voice coil 322 is connected to the central portion 3212. Optionally, the second voice coil 322 can be a flat voice coil, a rectangular voice coil, or a ring-shaped runway voice coil, etc., which is not limited here.

[0112] In order to facilitate the simultaneous installation and fixation of the first diaphragm 3111 and the second diaphragm 3211 using the support member 4, the inner ring portion 3112 of the first diaphragm 3111 and the outer fixing portion 3215 of the second diaphragm 3211 can be overlapped and connected to the support member 4; or, the inner ring portion 3112 of the first diaphragm 3111 and the outer fixing portion 3215 of the second diaphragm 3211 are arranged on opposite sides of the support member 4, such as the left and right sides or the upper and lower sides of the support member 4, etc., which are not limited here.

[0113] In this embodiment, in order to improve the sound effect of the sound-emitting monomer 100 and increase the sound radiation area of ​​the vibration system 3, part of the first diaphragm assembly 311 and part of the second diaphragm assembly 321 are overlapped along the first direction, that is, the first diaphragm 3111 and the second diaphragm 3211 are partially overlapped along the first direction. Optionally, the distance from the end of the folding ring portion 3214 connected to the outer fixing portion 3215 to the central axis of the sound-emitting monomer 100 is not less than the distance from the end of the inner folding ring portion 3115 connected to the inner ring portion 3112 to the central axis of the sound-emitting monomer 100. Therefore, through the above-mentioned arrangement, the sound areas of the first diaphragm assembly 311 and the second diaphragm assembly 321 can be increased respectively, thereby improving the sound effect of the sound-emitting monomer 100.

[0114] Optionally, along the first direction, the central portion 3212 is opposite to the hollow hole 3113. That is, along the first direction, the central portion 3212 of the second diaphragm 3211 is exposed in the hollow hole 3113. It can be understood that such an arrangement enables the outer fixing portion 3215 and the folding ring portion 3214 of the second diaphragm 3211 to overlap with the first diaphragm 3111 along the first direction, thereby effectively increasing the vibration area of ​​the first diaphragm 3111 and the second diaphragm 3211, thereby improving the sound effect of the sound-emitting unit 100, which is not limited here.

[0115] Optionally, along the first direction, at least part of the folded ring portion 3214 is opposite to the hollow hole 3113. That is, at least part of the folded ring portion 3214 of the second diaphragm 3211 is exposed in the hollow hole 3113. In this embodiment, the central portion 3212 and at least part of the folded ring portion 3214 of the second diaphragm 3211 are exposed in the hollow hole 3113, so that the outer fixing portion 3215 and part of the folded ring portion 3214 of the second diaphragm 3211 are overlapped with the first diaphragm 3111 along the first direction, thereby increasing the vibration area of ​​the first diaphragm 3111 and the second diaphragm 3211, thereby improving the sound effect of the sound-emitting unit 100, which is not limited here.

[0116] Of course, in other embodiments, along the first direction, part of the outer fixing portion 3215 of the second diaphragm 3211 may be opposite to the hollow hole 3113, that is, part of the outer fixing portion 3215 of the second diaphragm 3211 is exposed in the hollow hole 3113. At this time, the central portion 3212, the folding ring portion 3214 and part of the outer fixing portion 3215 of the second diaphragm 3211 are all exposed in the hollow hole 3113, which can effectively reduce the height of the sound unit 100 in the Z direction, which is not limited here.

[0117] It is understandable that the folding ring portion 3214 of the second diaphragm 3211 can be a convex structure that bulges upward or a concave structure that is concave downward. In order to avoid interference between the folding ring portion 3214 and the support member 4 when the folding ring portion 3214 vibrates, the folding ring portion 3214 is optionally convex. Optionally, the convex direction of the folding ring portion 3214 is opposite to the convex direction of the inner folding ring portion 3115. In this embodiment, the inner folding ring portion 3115 optionally bulges upward, and the folding ring portion 3214 optionally bulges downward, which is not limited here. Optionally, the convex direction of the inner folding ring portion 3115 is opposite to the convex direction of the outer folding ring portion 3116, and the convex direction of the folding ring portion 3214 is opposite to the convex direction of the inner folding ring portion 3115.

[0118] In order to improve the connection stability between the second diaphragm 3211 and the support member 4 , in one embodiment, the outer side of the outer fixing portion 3215 is bent toward the magnetic circuit system 2 to form a second flange 3216 , and the second flange 3216 is connected to the support member 4 .

[0119] In this embodiment, if Figure 3 , Figure 5 , Figure 6 , Figure 8 and Fig. 9 As shown, the outer fixing portion 3215 and the second flange 3216 of the second diaphragm 3211 are both connected to the support member 4. Optionally, the cross-sectional shape of the support member 4 along the vibration direction of the vibration system 3 can be T-shaped, L-shaped, Y-shaped, etc., which is not limited here.

[0120] In order to further improve the structural strength and vibration performance of the second diaphragm 3211 , in one embodiment, the central portion 3212 is provided with a hollow hole 3213 , and the second diaphragm assembly 321 further includes a spherical top 3217 , which is connected to the central portion 3212 to cover the hollow hole 3213 .

[0121] In this embodiment, if Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 8 and Fig. 9As shown, by providing the dome 3217 in the central portion 3212, the dome 3217 is connected to the central portion 3212, so that the structural strength of the second diaphragm 3211 can be improved. At the same time, by providing the hollow hole 3213 in the central portion 3212, the weight of the second diaphragm 3211 can be reduced, so that the weight of the second diaphragm 3211 can be reduced and the structural strength and vibration performance of the second diaphragm 3211 can be ensured.

[0122] Of course, in other embodiments, the central portion 3212 of the second diaphragm 3211 may not be hollowed out. In this case, the dome 3217 is disposed on at least one side of the central portion 3212 . This may help to enhance the structural strength of the second diaphragm 3211 , which is not limited here.

[0123] In one embodiment, the support member 4 includes a main body portion 41, the main body portion 41 includes a first support portion 411 and a second support portion 412 which are arranged at an angle, one end of the first support portion 411 away from the second support portion 412 is connected to the magnetic circuit system 2, at least a portion of the second support portion 412 extends in a direction close to the second voice coil 322, and the inner peripheral side of the first diaphragm assembly 311 and the outer peripheral side of the second diaphragm assembly 321 are both connected to the second support portion 412.

[0124] In this embodiment, if Figure 3 , Figure 5 , Figure 6 , Figure 8 , Fig. 9 , Fig.12 As shown, by setting the main body 41 of the support member 4 to the first support portion 411 and the second support portion 412 set at an angle, the end of the first support portion 411 away from the second support portion 412 is connected to the magnetic circuit system 2, that is, the second support portion 412 and the magnetic circuit system 2 are connected to the two ends of the first support portion 411 along the first direction.

[0125] Optionally, the second support portion 412 extends along a second direction, and the second direction is perpendicular to the first direction. In this embodiment, the second support portion 412 extends toward the second voice coil 322 , that is, the second direction is a direction approaching the second voice coil 322 .

[0126] In this embodiment, the second support portion 412 is vertically arranged with respect to the first support portion 411, and the second support portion 412 extends toward the second voice coil 322. The inner peripheral side of the first diaphragm assembly 311 and the outer peripheral side of the second diaphragm assembly 321 are both connected to the second support portion 412. It can be understood that the inner ring portion 3112 of the first diaphragm 3111 of the first diaphragm assembly 311 is connected to the second support portion 412, and the outer fixing portion 3215 of the second diaphragm 3211 of the second diaphragm assembly 321 is connected to the second support portion 412.

[0127] In one embodiment, the second supporting portion 412 includes an upper surface 4121 and a lower surface 4122 spaced apart along the first direction, the inner peripheral side of the first diaphragm assembly 311 is connected to the upper surface 4121 , and the outer peripheral side of the second diaphragm assembly 321 is connected to the lower surface 4122 .

[0128] In this embodiment, if Fig.12 As shown, the main body 41 of the support member 4 is an annular structure. Optionally, the first support portion 411 and the second support portion 412 of the main body 41 are annular structures. The second support portion 412 has an upper surface 4121 and a lower surface 4122 that are arranged in opposite directions along the first direction. At this time, the inner ring portion 3112 of the first diaphragm 3111 of the first diaphragm assembly 311 is connected to the upper surface 4121, and the outer fixing portion 3215 of the second diaphragm 3211 of the second diaphragm assembly 321 is connected to the lower surface 4122. It can be understood that by connecting and fixing the inner ring portion 3112 of the first diaphragm 3111 and the outer fixing portion 3215 of the second diaphragm 3211 to different surfaces of the second support portion 412, the first diaphragm 3111 and the second diaphragm 3211 can have overlapping parts along the first direction, thereby respectively increasing the sound-emitting areas of the first diaphragm 3111 and the second diaphragm 3211, thereby improving the sound-emitting effect of the sound-emitting unit 100.

[0129] In order to further improve the connection stability and sealing effect between the first diaphragm assembly 311 and the second support portion 412, in one embodiment, the second support portion 412 also includes an inner surface 4123 connecting the upper surface 4121 and the lower surface 4122, and the inner peripheral side of the first diaphragm assembly 311 is bent toward the magnetic circuit system 2 to form a first flange 3114, and the first flange 3114 is connected to the inner surface 4123.

[0130] In this embodiment, if Figure 3 , Figure 5 , Figure 6 and Figure 8 As shown, the inner surface 4123 of the second support portion 412 is arranged around the hollow hole 3113. Optionally, the annular hole formed by the inner surface 4123 of the second support portion 412 is comparable in profile and size to the hollow hole 3113. It can be understood that the inner ring portion 3112 of the first diaphragm 3111 of the first diaphragm assembly 311 is connected to the upper surface 4121, and the first flange 3114 of the first diaphragm 3111 is connected to the inner surface 4123.

[0131] It can be understood that the inner circumference of the first diaphragm assembly 311 is bent toward the magnetic circuit system 2 to form the first flange 3114, that is, the inner ring portion 3112 of the first diaphragm 3111 is bent toward the magnetic circuit system 2 on one side facing the hollow hole 3113 to form the first flange 3114. Optionally, the first flange 3114 is vertically arranged with the inner ring portion 3112, that is, the cross-section of the inner ring portion 3112 and the first flange 3114 along the first direction is L-shaped, which is not limited here.

[0132] In order to further improve the connection stability and sealing effect between the second diaphragm assembly 321 and the support member 4, in one embodiment, the first support portion 411 has an inner wall 4111 connected to the lower surface 4122 and extending along the first direction, and the outer peripheral side of the second diaphragm assembly 321 is bent toward the magnetic circuit system 2 to form a second flange 3216, and the second flange 3216 is connected to the inner wall 4111.

[0133] In this embodiment, if Fig. 9 As shown, the side of the first support portion 411 facing the second voice coil 322 is an inner wall 4111, and the inner wall 4111 is connected to the lower surface 4122 of the second support portion 412. At this time, the outer fixing portion 3215 of the second diaphragm 3211 of the second diaphragm assembly 321 is connected to the lower surface 4122, and the second flange 3216 of the second diaphragm 3211 is connected to the inner wall 4111.

[0134] It can be understood that the outer peripheral side of the second diaphragm assembly 321 is bent toward the magnetic circuit system 2 to form the second flange 3216, that is, the side of the outer fixing portion 3215 of the second diaphragm 3211 away from the folding ring portion 3214 is bent toward the magnetic circuit system 2 to form the second flange 3216. Optionally, the second flange 3216 is vertically arranged with the outer fixing portion 3215, that is, the cross-section of the outer fixing portion 3215 and the second flange 3216 along the first direction is L-shaped, which is not limited here. Therefore, by providing the second flange 3216, the connection area between the second diaphragm assembly 321 and the support member 4 can be increased, thereby improving the connection firmness and sealing effect between the second diaphragm assembly 321 and the support member 4.

[0135] In one embodiment, the support member 4 includes a main body portion 41 and a plurality of connecting portions 42 arranged on the periphery of the main body portion 41, and the inner periphery of the first diaphragm assembly 311 and the outer periphery of the second diaphragm assembly 321 are both connected to the main body portion 41; the sound unit 100 also includes a first centering support plate 51 and a second centering support plate 52, and the two ends of the first centering support plate 51 are respectively connected to the first voice coil 312 and a part of the connecting portion 42, and the two ends of the second centering support plate 52 are respectively connected to the second voice coil 322 and another part of the connecting portion 42.

[0136] In this embodiment, if Figure 3 , Fig.12As shown, by setting the support member 4 as a main body portion 41 and a plurality of connecting portions 42 arranged on the periphery of the main body portion 41, the main body portion 41 can be used to install and fix the first diaphragm assembly 311 and the second diaphragm assembly 321, and the connecting portion 42 of the support member 4 can be used to install and fix the first centering support plate 51 and the second centering support plate 52.

[0137] It can be understood that by providing the first centering support 51 and the second centering support 52, the first centering support 51 is connected to the first voice coil 312, and the second centering support 52 is connected to the second voice coil 322, so that the first centering support 51 and the second centering support 52 can be used to center the first voice coil 312 and the second voice coil 322 to prevent the first voice coil 312 and the second voice coil 322 from swinging or polarizing during the vibration process, and the first centering support 51 and the second centering support 52 can be used to introduce external current into the first voice coil 312 and the second voice coil 322 to realize the power supply to the first voice coil 312 and the second voice coil 322. Of course, in other embodiments, only the first centering support 51 and the second centering support 52 can be used to center the first voice coil 312 and the second voice coil 322 during the vibration process.

[0138] It should be noted that the support member 4 mainly serves to install and fix the first diaphragm assembly 311 and the second diaphragm assembly 321. The connecting portion 42 of the support member 4 can be used to install and fix the first centering support piece 51 and / or the second centering support piece 52. Of course, in other embodiments, the first centering support piece 51 and / or the second centering support piece 52 may not be connected to the connecting portion 42 of the support member 4, which is not limited here.

[0139] It can be understood that since the second voice coil 322 is located on the inner side of the first voice coil 312, that is, the first voice coil 312 is located on the outer side of the second voice coil 322, and the first magnetic gap 241 of the magnetic circuit system 2 is located on the outer periphery of the second magnetic gap 231, in order to facilitate installation and fixation and simplify the structural setting, one end of the second centering support plate 52 is connected to the second voice coil 322, and the other end of the second centering support plate 52 is connected to the connecting portion 42 of the support member 4.

[0140] It should be noted that one end of the first centering support 51 is connected to the first voice coil 312, and the other end of the first centering support 51 can be connected to the connecting portion 42 of the support member 4. It can be understood that the first centering support 51 and the second centering support 52 can be connected to the external circuit through a structure such as a flexible circuit board or a cable to achieve connection and conduction between the external circuit and the first voice coil 312 and the second voice coil 322, which is not limited here.

[0141] Of course, in other embodiments, one end of the first centering support plate 51 is connected to the first voice coil 312, and the other end of the first centering support plate 51 may also be connected to the housing 1, which is not limited here.

[0142] In one embodiment, the sound unit 100 also includes a shell 1, one end of the shell 1 is connected to the magnetic circuit system 2, and the other end of the shell 1 is connected to the outer periphery of the first diaphragm assembly 311; the sound unit 100 also includes a first centering support plate 51 and a second centering support plate 52, the two ends of the first centering support plate 51 are respectively connected to the first voice coil 312 and the shell 1, and the two ends of the second centering support plate 52 are respectively connected to the second voice coil 322 and the support member 4.

[0143] In this embodiment, one end of the first centering support plate 51 is connected to the first voice coil 312, and the other end of the first centering support plate 51 is connected to the housing 1. At this time, the external circuit can be connected to the first centering support plate 51 on the housing 1 through a structure such as a flexible circuit board or a cable, so as to achieve connection and conduction between the first voice coil 312 and the external circuit, which is not limited here.

[0144] It can be understood that one end of the second centering support plate 52 is connected to the second voice coil 322, and the other end of the second centering support plate 52 is connected to the connecting portion 42 of the support member 4. At this time, the external circuit can be connected to the second centering support plate 52 through the support member 4 or a flexible circuit board or a conductive member and other structures, so as to achieve connection and conduction between the second voice coil 322 and the external circuit, which is not limited here.

[0145] In one embodiment, if Fig.12 As shown, the main body 41 is in a square ring shape, and a plurality of connecting portions 42 are respectively arranged at the four corners of the main body 41 and extend outward relative to the main body 41. It can be understood that the main body 41 can optionally be in a rectangular ring shape, that is, the main body 41 has four corners, and the support member 4 includes four connecting portions 42, each of which is connected to a corner of the main body 41.

[0146] In this embodiment, the connecting portion 42 is optionally connected to an end of the first supporting portion 411 of the main body portion 41 away from the second supporting portion 412, and extends toward the first voice coil 312, that is, the connecting portion 42 and the second supporting portion 412 are located on the inner and outer sides (that is, opposite sides) of the first supporting portion 411. In this way, the end of the first supporting portion 411 away from the second supporting portion 412 can be used to connect to the magnetic circuit system 2, and part of the connecting portion 42 can be used to connect to the magnetic circuit system 2, thereby improving the connection stability.

[0147] In one embodiment, the first centering support piece 51 and the second centering support piece 52 each include a first fixing portion 511 , a second fixing portion 512 , and an elastic portion 513 connecting the first fixing portion 511 and the second fixing portion 512 .

[0148] In this embodiment, if Figure 3 , Fig.10 , Fig.11 , Fig.13 and Fig.14 As shown, the first fixing portion 511 of the first centering support 51 is connected to the connecting portion 42, and the second fixing portion 512 of the first centering support 51 is connected to the first voice coil 312. The first fixing portion 511 of the second centering support 52 is connected to the connecting portion 42, and the second fixing portion 512 of the second centering support 52 is connected to the second voice coil 322.

[0149] Of course, in other embodiments, the first fixing portion 511 of the first centering support 51 may also be connected to the housing 1, and the second fixing portion 512 of the first centering support 51 is connected to the first voice coil 312, which is not limited here. In order to facilitate the installation and fixing of the second centering support 52, the first fixing portion 511 of the second centering support 52 in this embodiment is connected to the connecting portion 42, and the second fixing portion 512 of the second centering support 52 is connected to the second voice coil 322.

[0150] It is understandable that the second centering support 52 may optionally include one or more. In this embodiment, the second centering support 52 may optionally include multiple, for example, the second centering support 52 may optionally include two or four, so that the second centering support 52 can be used to connect the external circuit with the second voice coil 322, and the vibration balance of the sound unit 100 can be ensured.

[0151] It can be understood that when there are two second centering supports 52, the two second centering supports 52 are arranged at intervals along the long axis direction of the magnetic circuit system 2; or, the two second centering supports 52 are arranged at intervals along the short axis direction of the magnetic circuit system 2, which is not limited here. Of course, when there are four second centering supports 52, two second centering supports 52 are arranged at intervals along the long axis direction of the magnetic circuit system 2, and two second centering supports 52 are arranged at intervals along the short axis direction of the magnetic circuit system 2; or, the four second centering supports 52 are arranged corresponding to the four connecting parts 42 at the four corner positions of the support member 4, which is not limited here.

[0152] In this embodiment, the first centering support piece 51 may optionally include one or more. When there is one first centering support piece 51, the first fixing portion 511 of the first centering support piece 51 may optionally be arranged in an annular shape and connected to the connecting portion 42 of the support member 4 or the housing 1. The first centering support piece 51 includes two second fixing portions 512 and at least two elastic portions 513, and each second fixing portion 512 is connected to the first fixing portion 511 through at least one elastic portion 513. Optionally, the first fixing portion 511 is in a rectangular annular shape. At this time, the two second fixing portions 512 may be arranged corresponding to the two long axes or two short axes of the first fixing portion 511, respectively, which is not limited here.

[0153] When the first centering support 51 includes multiple first centering support plates 51, the first centering support plates 51 can optionally include two or four. Such an arrangement can not only utilize the first centering support plates 51 to connect the external circuit to the first voice coil 312, but also ensure the vibration balance of the sound unit 100.

[0154] It can be understood that when there are two first centering supports 51, the two first centering supports 51 are arranged at intervals along the long axis direction of the magnetic circuit system 2; or, the two first centering supports 51 are arranged at intervals along the short axis direction of the magnetic circuit system 2, which is not limited here. Of course, when there are four first centering supports 51, two first centering supports 51 are arranged at intervals along the long axis direction of the magnetic circuit system 2, and two first centering supports 51 are arranged at intervals along the short axis direction of the magnetic circuit system 2; or, the four first centering supports 51 are arranged corresponding to the four corner positions of the housing 1, which is not limited here.

[0155] In this embodiment, if Figure 3 , Fig.10 , Fig.11 , Fig.13 and Fig.14 As shown, the first centering support 51 includes two, and the second centering support 52 includes two. The first fixing portions 511 of the two first centering support 51 and the two second centering support 52 are connected to the connecting portion 42, and the second fixing portions 512 of the two first centering support 51 and the two second centering support 52 are respectively connected to the first voice coil 312 and the second voice coil 322. Optionally, along the circumferential direction of the main body 41, the first centering support 51 and the second centering support 52 are staggered.

[0156] It can be understood that the two first centering supports 51 can be arranged and connected along the two connecting parts 42 in the direction of a long axis of the support member 4, and the two second centering supports 52 can be arranged and connected along the two connecting parts 42 in the direction of the other long axis of the support member 4; or, the two first centering supports 51 can be arranged and connected along the two connecting parts 42 in the direction of a short axis of the support member 4, and the two second centering supports 52 can be arranged and connected along the two connecting parts 42 in the other direction of the short axis of the support member 4; or, the two first centering supports 51 can be arranged and connected along the two connecting parts 42 at the diagonal positions of the support member 4, and the two second centering supports 52 can be arranged and connected along the two connecting parts 42 at the other diagonal positions of the support member 4, which is not limited here.

[0157] Optionally, the first centering support piece 51 includes two, and the two first centering support pieces 51 are symmetrically arranged at the diagonal positions of the main body 41. Optionally, the second centering support piece 52 includes two, and the two second centering support pieces 52 are symmetrically arranged at the diagonal positions of the main body 41, thereby ensuring the vibration balance of the sound-emitting unit 100. Further, the first centering support piece 51 includes two, and the two first centering support pieces 51 are symmetrically arranged at one pair of diagonal positions of the main body 41, and the second centering support piece 52 includes two, and the two second centering support pieces 52 are symmetrically arranged at the other pair of diagonal positions of the main body 41. It can be understood that such a setting not only effectively increases the volume of the second side magnetic part 24 of the magnetic circuit system 2 and improves the magnetic field strength, but also ensures the vibration balance of the sound-emitting unit 100.

[0158] In one embodiment, if Figure 3 , Fig.10 , Fig.11 , Fig.13 and Fig.14 As shown, the first centering support plate 51 and the second centering support plate 52 each include a first fixing portion 511 , a second fixing portion 512 and an elastic portion 513 connecting the first fixing portion 511 and the second fixing portion 512 . The first fixing portion 511 is connected to the connecting portion 42 , and the second fixing portion 512 is connected to the first voice coil 312 or the second voice coil 322 .

[0159] It can be understood that in order to ensure the deformation ability of the first centering support piece 51 and the second centering support piece 52, the elastic portion 513 may optionally have at least one bend. In this embodiment, the first fixing portion 511, the elastic portion 513 and the second fixing portion 512 of the first centering support piece 51 and the second centering support piece 52 may be located in the same plane; or, the first fixing portion 511, the elastic portion 513 and the second fixing portion 512 of the first centering support piece 51 and the second centering support piece 52 may be located in different planes, which is not limited here.

[0160] In one embodiment, the magnetic circuit system 2 is provided with a plurality of avoidance gaps 232 connecting the first magnetic gap 241 and the second magnetic gap 231 , and the first centering support piece 51 and the second centering support piece 52 are respectively disposed in the corresponding avoidance gaps 232 .

[0161] In this embodiment, if Figure 3 , Fig.10 and Fig.11 As shown, by providing an escape gap 232 in the magnetic circuit system 2, the escape gap 232 is connected to the first magnetic gap 241 and the second magnetic gap 231, so that the escape gap 232 can be used to provide an escape and installation space for the first centering support piece 51 and / or the second centering support piece 52. It can be understood that the escape gap 232 includes a plurality of escape gaps 232, the second centering support piece 52 is provided in one escape gap 232, and the first centering support piece 51 is provided in another escape gap 232.

[0162] Of course, in other embodiments, only the second centering support piece 52 may be provided in the avoidance gap 232, while the first centering support piece 51 is not provided in the avoidance gap 232, in which case the first centering support piece 51 is connected to the housing 1. It can be understood that the magnetic circuit system 2 is also provided with an avoidance gap connected to the first magnetic gap 241, and at least part of the first centering support piece 51 is located in the avoidance gap. It should be noted that the avoidance gap 232 is located between the first magnetic gap 241 and the second magnetic gap 231, and the avoidance gap is located on the side of the first magnetic gap 241 facing away from the second magnetic gap 231.

[0163] Optionally, the magnetic circuit system 2 is arranged in a rectangular shape. When the magnetic circuit system 2 is provided with only the avoidance gap 232, at least part of the first centering support piece 51 is arranged in a part of the avoidance gap 232, and at least part of the second centering support piece 52 is arranged in another part of the avoidance gap 232. When the magnetic circuit system 2 is provided with the avoidance gap 232 and the avoidance gap, at least part of the first centering support piece 51 is arranged in the avoidance gap, and at least part of the second centering support piece 52 is arranged in the avoidance gap 232, which is not limited here.

[0164] It can be understood that in order to increase the volume of the side magnetic part of the magnetic circuit system 2 to improve the magnetic circuit performance, only the avoidance gap 232 can be set in the magnetic circuit system 2, which is not limited here.

[0165] In one embodiment, the magnetic circuit system 2 includes a yoke 21 and a central magnetic portion 22, a first side magnetic portion 23 and a second side magnetic portion 24 arranged on the same side of the yoke 21, the first side magnetic portion 23 is located on the outside of the central magnetic portion 22, and is spaced from the central magnetic portion 22 to form a second magnetic gap 231, and the second side magnetic portion 24 is located on the outside of the first side magnetic portion 23, and is spaced from the first side magnetic portion 23 to form a first magnetic gap 241.

[0166] In this embodiment, if Figure 2 , Figure 3 , Figures 5 to 10As shown, by setting the magnetic circuit system 2 as a yoke 21 and a central magnetic part 22, a first side magnetic part 23 and a second side magnetic part 24 laid flat on one side of the yoke 21, the first side magnetic part 23 is located outside the central magnetic part 22 and is spaced from the central magnetic part 22 to form a second magnetic gap 231, and the second side magnetic part 24 is located outside the first side magnetic part 23 and is spaced from the first side magnetic part 23 to form a first magnetic gap 241. Thus, compared with the conventional magnetic circuit system of a double-sided sound-emitting unit, the magnetic circuit system 2 in the utility model has a simpler structural design and does not require high assembly accuracy, thereby reducing the difficulty of assembling the magnetic circuit system 2 and improving assembly efficiency. It can be understood that the design of the magnetic circuit system 2 not only enables the sound-emitting unit 100 to achieve an ultra-thin design relative to the sound-emitting device of the two oppositely arranged dual vibration systems, effectively reducing the height of the sound-emitting unit 100 in the Z direction, but also the structural design of the magnetic circuit system 2 is simpler and the assembly is more convenient.

[0167] It can be understood that in order to facilitate the installation and fixation of the first diaphragm assembly 311 and the second diaphragm assembly 321. And the first voice coil 312 is arranged corresponding to the first magnetic gap 241, and the second voice coil 322 is arranged corresponding to the second magnetic gap 231. Optionally, the support member 4 is arranged on the first side magnetic portion 23. In this embodiment, the support member 4 is arranged on the side of the first side magnetic portion 23 facing away from the yoke 21, and the first support portion 411 of the support member 4 is connected to the first side magnetic portion 23. Optionally, the first support portion 411 is perpendicular to the first side magnetic portion 23, and the second support portion 412 is parallel to the first side magnetic portion 23.

[0168] In this embodiment, the central magnetic part 22 includes a central magnet and a central washer which are stacked, and the central magnet is connected to the yoke 21. It can be understood that the central magnet and the central washer may include one or more. When there is one central magnet and one central washer, the central magnet is sandwiched between the central washer and the yoke 21; when there are multiple central magnets and multiple central washers, multiple central magnets and multiple central washers are stacked and alternately arranged, and one central magnet is connected to the yoke 21, which is not limited here.

[0169] Optionally, the central magnet and the central washer of the central magnetic part 22 are in a plate-like or annular structure, which is not limited here. It can be understood that the central magnet and the central washer of the central magnetic part 22 are arranged in an integrated ring. Of course, the central magnet and the central washer of the central magnetic part 22 may also include multiple central magnets and multiple central washers to form an annular structure, so that multiple bar structures are enclosed to form a through-hole structure, which is not limited here. It should be noted that in order to reduce the weight of the magnetic circuit system 2 and reduce the magnetic leakage of the central magnet, a recessed area or a through-hole structure may be set in the center of the central magnetic part 22, which is not limited here.

[0170] In this embodiment, the first side magnetic part 23 includes a first side magnet and a first side washer which are stacked, and the first side magnet is connected to the magnetic yoke 21. It can be understood that the first side magnet and the first side washer of the first side magnetic part 23 are located outside the central magnetic part 22 and are spaced to form a second magnetic gap 231.

[0171] In one embodiment, the first side magnetic portion 23 is optionally arranged in an annular shape, in which case the annular first side magnetic portion 23 is located outside the central magnetic portion 22, and is spaced apart from the central magnetic portion 22 to form a second magnetic gap 231. Optionally, the first side magnetic portion 23 forms a closed integral annular structure. Of course, in other embodiments, the first side magnetic portion 23 includes a plurality of first side magnetic portions 23, which are spaced apart and arranged around the outside of the central magnetic portion 22, and are spaced apart from the central magnetic portion 22 to form a second magnetic gap 231.

[0172] Optionally, the first side magnet and the first side washer of the first side magnetic part 23 can both be one or more. When the first side magnet and the first side washer are both one, the first side magnet is sandwiched between the magnetic yoke 21 and the first side washer. When the first side magnet and the first side washer are both multiple, the multiple first side magnets and the multiple first side washers are alternately stacked.

[0173] It can be understood that the first side magnets and first side washers of the first side magnet portion 23 are both multiple and arranged one-to-one, and the intervals between two adjacent first side magnets and first side washers form an escape gap 232. Alternatively, the first side magnets form a closed integral annular structure, the first side washers are multiple, the adjacent first side washers are spaced to form an escape gap 232, and are arranged corresponding to the annular first side magnets; or the first side washers form a closed integral annular structure, the first side magnets are multiple, the adjacent first side magnets are spaced to form an escape gap 232, and are arranged corresponding to the annular first side washers, which is not limited here.

[0174] It should be noted that in order to facilitate the installation of the centering support plate, multiple first side magnetic portions 23 are arranged around the outer side of the central magnetic portion 22, and an avoidance gap 232 for avoiding the first centering support plate 51 and / or the second centering support plate 52 is provided between two adjacent first side magnetic portions 23, which is not limited here.

[0175] In one embodiment, the first side magnet parts 23 include a plurality of first side magnet parts 23 , which are arranged around the central magnet part 22 , and a gap 232 is formed between two adjacent first side magnet parts 23 , and some support members 4 are arranged corresponding to the gap 232 .

[0176] In this embodiment, two adjacent first side magnetic portions 23 are spaced apart to form an avoidance gap 232, and the avoidance gap 232 connects the first magnetic gap 241 and the second magnetic gap 231. At this time, the avoidance gap 232 can be used to avoid and install the second centering support plate 52; or, the avoidance gap 232 can be used to avoid and install the first centering support plate 51 and the second centering support plate 52, which is not limited here.

[0177] It can be understood that in order to facilitate the connection between the first centering support piece 51 and / or the second centering support piece 52 and the connecting portion 42 of the support member 4, a portion of the connecting portion 42 of the support member 4 extends into the avoidance gap 232 and is connected to the first fixing portion 511 of the first centering support piece 51 and / or the second centering support piece 52.

[0178] In this embodiment, the second side magnet portion 24 includes a second side magnet and a second side washer which are stacked, and the second side magnet is connected to the magnetic yoke 21. It can be understood that the second side magnet and the second side washer of the second side magnet portion 24 are located outside the first side magnet and the first side washer of the first side magnet portion 23, and are spaced to form a first magnetic gap 241.

[0179] In one embodiment, the second edge magnet portion 24 is optionally arranged in an annular shape, that is, the second edge magnet portion 24 forms a closed integral annular structure, in which case the annular second edge magnet portion 24 is located outside the first edge magnet portion 23, and is spaced apart from and enclosed with the first edge magnet portion 23 to form a first magnetic gap 241. Optionally, the second edge magnet and / or the second edge washer form a closed integral annular structure. Of course, in other embodiments, the second edge magnet portion 24 includes a plurality of second edge magnet portions 24, which are arranged around the outside of the first edge magnet portion 23, and are spaced apart from and enclosed with the first edge magnet portion 23 to form a first magnetic gap 241. Optionally, the second edge magnet portion 24 includes a plurality of adjacent second edge magnet portions 24 connected end to end to form a closed annular structure.

[0180] Optionally, the second side magnet and the second side washer of the second side magnet portion 24 can both be one or more. When the second side magnet and the second side washer are both one, the second side magnet is sandwiched between the yoke 21 and the second side washer.

[0181] When there are multiple second side magnets and second side washers, and they are arranged one by one, the adjacent second side magnets are connected end to end to form a closed annular structure. Alternatively, the second side magnets form a closed integral annular structure, there are multiple second side washers, adjacent second side washers are connected end to end to form a closed annular structure, and are arranged corresponding to the annular second side magnets; or, the second side washers form a closed integral annular structure, there are multiple second side magnets, adjacent second side magnets are connected end to end to form a closed annular structure, and are arranged corresponding to the annular second side washers, which are not limited here. Therefore, through the above-mentioned arrangement, the setting volume of the second side magnet portion 24 can be increased, thereby improving the magnetic field strength of the magnetic circuit system 2.

[0182] It should be noted that, in order to facilitate the installation of the centering support plate, multiple second side magnets 24 are arranged around the outside of the first side magnet 23, and a clearance gap for avoiding the first centering support plate 51 is provided between two adjacent second side magnets 24, which is not limited here.

[0183] In one embodiment, the second edge magnet parts 24 include a plurality of second edge magnet parts 24 , which are arranged around the first edge magnet part 23 , and two adjacent second edge magnet parts 24 are spaced apart to form a clearance gap, and part of the first centering support piece 51 is arranged corresponding to the clearance gap.

[0184] In this embodiment, two adjacent second side magnetic portions 24 are spaced to form a clearance gap, which is connected to the first magnetic gap 241. At this time, the clearance gap can be used to avoid and install the first centering support piece 51, which is not limited here. It can be understood that one end of the first centering support piece 51 is connected to the housing 1, and the other end of the first centering support piece 51 passes through the clearance gap and extends into the first magnetic gap 241 to connect with the first voice coil 312.

[0185] In one embodiment, the magnetic circuit system 2 is further provided with a through hole 211 corresponding to the avoidance gap 232, and the sound unit 100 also includes a flexible circuit board 6 arranged on the side of the magnetic circuit system 2 facing away from the vibration system 3, and the flexible circuit board 6 includes a main body 61 and an extension portion 62 connected to the main body 61, one end of the extension portion 62 passes through the through hole 211 and is electrically connected to the first centering support plate 51 and / or the second centering support plate 52.

[0186] It can be understood that the sound unit 100 also includes a flexible circuit board 6 arranged on the side of the magnetic circuit system 2 facing away from the vibration system 3. One end of the flexible circuit board 6 passes through the magnetic circuit system 2 and is electrically connected to the first centering support plate 51 and the second centering support plate 52.

[0187] In this embodiment, if Figure 2 , Figure 3 , Figure 5 , Figure 6 and Fig.15As shown, the flexible circuit board 6 is used to connect the external circuit to the first voice coil 312 and the second voice coil 322 of the sound unit 100. By arranging the flexible circuit board 6 on the side of the magnetic circuit system 2 facing away from the vibration system 3, one end of the flexible circuit board 6 passes through the magnetic circuit system 2 and is electrically connected to the first centering support plate 51 and the second centering support plate 52, thereby effectively reducing the volume of the sound unit 100.

[0188] It can be understood that the flexible circuit board 6 is provided with an inner pad and an outer pad. The inner pad of the flexible circuit board 6 is electrically connected to the first centering support plate 51 and the second centering support plate 52 of the sound unit 100, and the outer pad of the flexible circuit board 6 is used to connect to the external terminal.

[0189] In one embodiment, the magnetic circuit system 2 is further provided with a through hole 211 corresponding to the avoidance gap 232, and the flexible circuit board 6 includes a main body 61 and an extension portion 62 connected to the main body 61, and one end of the extension portion 62 passes through the through hole 211 and is electrically connected to the first centering support plate 51 and / or the second centering support plate 52.

[0190] In this embodiment, if Figure 2 , Figure 3 , Figure 7 and Fig.15 As shown, the extension portion 62 of the flexible circuit board 6 is provided with an inner pad. By providing a through hole 211 on the magnetic circuit system 2, the through hole 211 corresponds to the first fixing portion 511 of the first centering support piece 51 and / or the second centering support piece 52, so that one end of the extension portion 62 can pass through the through hole 211 and be connected and conducted with the first fixing portion 511 of the first centering support piece 51 and / or the second centering support piece 52.

[0191] It can be understood that the flexible circuit board 6 includes a plurality of extension portions 62, and the plurality of extension portions 62 are arranged at intervals, and one end of the plurality of extension portions 62 is connected to the main body portion 61, and one end of each extension portion 62 away from the main body portion 61 passes through the through hole 211 and is connected and conducted with the first centering support piece 51 and / or the first fixing portion 511 of the second centering support piece 52.

[0192] Optionally, the yoke 21 of the magnetic circuit system 2 is provided with a through hole 211 corresponding to each avoidance gap 232 , and each extension portion 62 passes through the through hole 211 and is connected to the first fixing portion 511 of the first centering support piece 51 or the second centering support piece 52 .

[0193] In this embodiment, the first side magnet portion 23 is provided with avoidance notches 232 at four corners, and the yoke 21 is provided with four through holes 211 corresponding to the four avoidance notches 232. The flexible circuit board 6 includes four extension portions 62 connected to the main body portion 61, each extension portion 62 passes through the through hole 211 and is connected to the first fixing portion 511 of the first centering support piece 51 or the second centering support piece 52.

[0194] It can be understood that every two of the four extension portions 62 are symmetrically arranged with the main body 61 as a symmetry axis, that is, two extension portions 62 are extended from each side of the main body 61 .

[0195] Of course, the avoidance gap 232 is only provided with a second centering support piece 52. When one end of the first centering support piece 51 is connected to the housing 1, the partial extension portion 62 of the flexible circuit board 6 extends to the edge along the side of the yoke 21 facing away from the vibration system 3, and is connected and conducted with the first centering support piece 51 on the housing 1, which is not limited here.

[0196] In order to prevent dust or debris from entering the interior of the sound unit 100 through the through hole 211 and affecting the performance of the sound unit 100 , in one embodiment, the sound unit 100 further includes a mesh 7 , and the mesh 7 covers the through hole 211 .

[0197] It is understandable that the mesh 7 can be a breathable isolation member, that is, the mesh 7 can allow airflow to pass through, but can block water vapor or debris from passing through. Optionally, the mesh 7 can be a metal mesh, etc., which is not limited here. Of course, in other embodiments, the mesh 7 can also be a blocking member or a damping member, etc., used to block water vapor or debris or airflow, etc., which is not limited here.

[0198] In one embodiment, a concave groove 212 is further provided on a side of the magnetic circuit system 2 facing away from the vibration system 3 and corresponding to the flexible circuit board 6 , and the flexible circuit board 6 is accommodated in the concave groove 212 .

[0199] In this embodiment, if Figure 2 and Figure 7 As shown, by providing a recessed groove 212 on the side of the magnetic circuit system 2 facing away from the vibration system 3, the flexible circuit board 6 is accommodated in the recessed groove 212. On the one hand, the flexible circuit board 6 is positioned and installed, and on the other hand, the flexible circuit board 6 does not protrude from the side of the magnetic circuit system 2 facing away from the vibration system 3 when accommodated in the recessed groove 212, thereby making the overall structure of the sound unit 100 more compact and improving the aesthetics.

[0200] It can be understood that the recessed groove 212 is recessed on the side of the yoke 21 facing away from the vibration system 3. One end of the recessed groove 212 extends toward the periphery of the yoke 21. At this time, the recessed groove 212 on the side of the yoke 21 facing away from the vibration system 3 is used to provide a routing space for the flexible circuit board 6, and to position and limit the routing structure (i.e., the flexible circuit board 6), thereby making the overall structure more compact and saving space. In this embodiment, the recessed groove 212 is formed by the recessed side of the yoke 21 facing away from the vibration system 3.

[0201] In this embodiment, the recessed groove 212 includes a main section corresponding to the main body 61 of the flexible circuit board 6 and an extending section corresponding to the extending portion 62 of the flexible circuit board 6 . The extending section of the recessed groove 212 extends from the main section to communicate with the through hole 211 .

[0202] It can be understood that the shape profile of the recessed groove 212 is substantially consistent with the shape profile of the flexible circuit board 6. That is, the main section and the extension section of the recessed groove 212 correspond to the main body 61 and the extension 62 of the flexible circuit board 6, which are specifically designed according to actual applications and are not limited here. In this embodiment, the recessed groove 212 includes a main section and multiple extension sections, one end of each extension section is connected to the main section, and the other end of each extension section is connected to the through hole 211. Optionally, multiple extension sections are arranged at intervals.

[0203] In one embodiment, the sound unit 100 further includes a housing 1 , one end of the housing 1 is connected to the magnetic circuit system 2 , and the other end of the housing 1 is connected to the outer periphery of the first diaphragm assembly 311 .

[0204] In this embodiment, if Figures 1 to 3 , Figures 5 to 8 , Fig.10 , Fig.11 As shown, the housing 1 may be a rectangular ring or frame structure. The outer periphery of the first diaphragm assembly 311 of the vibration system 3 is connected to one end of the housing 1 , and the magnetic circuit system 2 is connected to the side of the housing 1 facing away from the first diaphragm assembly 311 .

[0205] It can be understood that a positioning column is provided on the periphery of one side of the housing 1 facing away from the first diaphragm assembly 311, and a positioning notch is provided on the yoke 21 of the magnetic circuit system 2 corresponding to the positioning column, and the positioning column is positioned and matched with the positioning notch. By providing the positioning column on the housing 1 and forming the positioning notch on the yoke 21 to be positioned and matched with the positioning column, the positioning and installation of the magnetic circuit system 2 is achieved, thereby improving the convenience and accuracy of installation.

[0206] In this embodiment, if Figure 3 , Figures 5 to 8 As shown, the second side magnet portion 24 includes a second side magnet and a second side washer which are stacked, the second side magnet is sandwiched between the second side washer and the yoke 21, and the second side washer is connected to the housing 1. Optionally, the second side washer and the housing 1 are an integrally formed structure, which can simplify the structure and improve the installation stability.

[0207] In one embodiment, the outer periphery of the first diaphragm assembly 311 is bent and extended toward one side of the housing 1 to form an outer bending portion 3118 , and the outer bending portion 3118 is connected to the peripheral side wall of the housing 1 .

[0208] In this embodiment, if Figures 1 to 8As shown, by setting an outer bending portion 3118 on the outer periphery of the first diaphragm 3111 of the first diaphragm assembly 311, the outer bending portion 3118 is connected to the peripheral side wall of the housing 1 to increase the area of ​​the connection between the first diaphragm assembly 311 and the housing 1, thereby improving the connection stability between the first diaphragm assembly 311 and the housing 1, improving the sealing effect, and further improving the waterproof effect of the sound unit 100. It can be understood that the outer bending portion 3118 is formed by bending the side of the fixing portion of the first diaphragm 3111 away from the outer folding ring portion 3116 toward the housing 1.

[0209] like Fig.16 and Fig.17 As shown, the present invention also provides a sound module 900, which includes a module housing 800 and the above-mentioned sound unit 100. The specific structure of the sound unit 100 refers to the above-mentioned embodiment. Since the present sound module 900 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 described one by one here.

[0210] In this embodiment, if Fig.16 and Fig.17 As shown, the sound unit 100 is arranged in the module shell 800, and the module shell 800 is provided with a first sound channel 810 corresponding to the first vibration component 31 of the sound unit 100 and a second sound channel 820 corresponding to the second vibration component 32 of the sound unit 100, and the first sound channel 810 and the second sound channel 820 are isolated from each other.

[0211] It can be understood that by setting the first sound channel 810 and the second sound channel 820 that are isolated from each other in the module shell 800, the first sound channel 810 is set corresponding to the first vibration component 31 of the sound unit 100, and the second sound channel 820 is set corresponding to the second vibration component 32 of the sound unit 100, so that the sounds generated by the first vibration component 31 and the second vibration component 32 of the sound unit 100 can be smoothly exported by using the first sound channel 810 and the second sound channel 820 respectively, and no sound wave interference is generated between each other, thereby effectively improving the sound effect.

[0212] It should be noted that the first vibration component 31 of the sound unit 100 and the module shell 800 cooperate to form a first front sound cavity, and the second vibration component 32 of the sound unit 100 and the module shell 800 cooperate to form a second front sound cavity, and the first front sound cavity and the second front sound cavity are isolated from each other. At this time, the first sound channel 810 is connected to the first front sound cavity, and the second sound channel 820 is connected to the second front sound cavity.

[0213] In one embodiment, if Fig.16 and Fig.17As shown, the module shell 800 is provided with an installation cavity and a first sound channel 810 and a second sound channel 820 connected to the installation cavity, an isolation member 830 is protrudingly provided on the inner wall of the installation cavity, and the sound unit 100 is arranged in the installation cavity of the module shell 800, so that the isolation member 830 is connected to the vibration system 3 of the sound unit 100, so that the first vibration component 31, the isolation member 830 and the module shell 800 cooperate to form a first front sound cavity connected to the first sound channel 810, and the second vibration component 32, the isolation member 830 and the module shell 800 cooperate to form a second front sound cavity connected to the second sound channel 820.

[0214] Optionally, the isolator 830 is connected to the inner ring portion 3112 of the first vibration component 31 and is disposed around the hollow hole 3113. In this way, the first diaphragm 3111 of the first vibration component 31 and the second diaphragm 3211 of the second vibration component 32 can be separated on opposite sides of the isolator 830.

[0215] It can be understood that in order to facilitate the connection between the sound unit 100 and the external circuit, the module housing 800 is also provided with a transfer terminal, and the flexible circuit board 6 of the sound unit 100 is connected to the transfer terminal, so that the flexible circuit board 6 is conveniently connected to the external circuit through the transfer terminal.

[0216] The utility model also provides an electronic device, which includes the above-mentioned sound unit 100. The specific structure of the sound unit 100 refers to the above-mentioned embodiment. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0217] In this embodiment, the electronic device further includes a device housing, and the sound unit 100 and the flexible circuit board are both arranged in the device housing. It can be understood that the electronic device can be a headset, a mobile phone, a computer, a tablet computer, a smart wearable device, etc., which is not limited here.

[0218] It can be understood that the device shell is provided with a first sound outlet channel and a second sound outlet channel which are isolated from each other. In this way, the sound unit 100 is arranged in the device shell, so that the first sound outlet channel is arranged corresponding to the first vibration component 31 of the sound unit 100, and the second sound outlet channel is arranged corresponding to the second vibration component 32 of the sound unit 100, so that the sounds generated by the first vibration component 31 and the second vibration component 32 of the sound unit 100 can be smoothly exported by using the first sound outlet channel and the second sound outlet channel respectively, and no sound wave interference is generated between each other, thereby effectively improving the sound effect.

[0219] In this embodiment, the device shell is provided with an installation space and a first sound outlet channel and a second sound outlet channel connected to the installation space, a partition is protrudingly provided on the inner wall of the installation space, and the sound unit 100 is arranged in the installation space of the device shell, so that the partition is connected to the vibration system 3 of the sound unit 100, so that the first vibration component 31, the partition and the device shell cooperate to form a first sound cavity connected to the first sound outlet channel, and the second vibration component 32, the partition and the device shell cooperate to form a second sound cavity connected to the second sound outlet channel.

[0220] Optionally, the separator is connected to the inner ring portion 3112 of the first vibration component 31 and is disposed around the hollow hole 3113. In this way, the first vibration membrane 3111 of the first vibration component 31 and the second vibration membrane 3211 of the second vibration component 32 can be separated on opposite sides of the separator.

[0221] The utility model also provides an electronic device, which includes the above-mentioned sound module 900. The specific structure of the sound module 900 refers to the above-mentioned embodiment. Since the electronic device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0222] It is understandable that the electronic device can be a headset, a mobile phone, a computer, a tablet computer, a smart wearable device, etc., which is not limited here. In this embodiment, the electronic device also includes a device housing, and the sound module 900 is arranged in the device housing.

[0223] In this embodiment, a first sound hole is provided in the device housing corresponding to the first sound channel 810 of the sound module 900, and a second sound hole is provided in the device housing corresponding to the second sound channel 820 of the sound module 900, and the first sound hole and the second sound hole are arranged at intervals.

[0224] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sound-emitting unit, characterized in that: The sound-emitting monomer comprises: A magnetic circuit system, wherein the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap, wherein the first magnetic gap is located at an outer periphery of the second magnetic gap; A vibration system, the vibration system comprising a first vibration component and a second vibration component which are arranged on the same side of the magnetic circuit system and vibrate along a first direction, the first vibration component comprising a first diaphragm component and a first voice coil, one end of the first voice coil is connected to the first diaphragm component, and the other end of the first voice coil is arranged corresponding to the first magnetic gap, the second vibration component comprising a second diaphragm component and a second voice coil, one end of the second voice coil is connected to the second diaphragm component, and the other end of the second voice coil is arranged corresponding to the second magnetic gap; and A support member, the support member is arranged on the magnetic circuit system, the inner peripheral side of the first diaphragm assembly and the outer peripheral side of the second diaphragm assembly are both fixed to the support member, and along the first direction, part of the first diaphragm assembly and part of the second diaphragm assembly are overlapped; Wherein, the sound-emitting monomer has a first state; In the first state, the first vibration component and the second vibration component radiate sound waves of opposite phases to the outside.

2. The sound-emitting unit according to claim 1, characterized in that: The first diaphragm assembly includes a first diaphragm, which includes an inner ring portion, an inner folded ring portion connected to the outer side of the inner ring portion, and an outer folded ring portion located outside the inner folded ring portion, the inner ring portion is connected to the support member and is formed with a hollow hole, and along the first direction, part of the second diaphragm assembly is opposite to the hollow hole.

3. The sound-emitting unit according to claim 2, characterized in that: The first diaphragm further comprises a straight portion connected between the inner folding portion and the outer folding portion, and one end of the first voice coil is connected to the straight portion; And / or, the inner folding ring portion and the outer folding ring portion are recessed in opposite directions; And / or, the first diaphragm assembly further includes a vibration plate, the vibration plate is arranged between the inner folding ring portion and the outer folding ring portion, and one end of the first voice coil is connected to the vibration plate or the first diaphragm; And / or, a side of the inner ring portion away from the inner folded ring portion is bent toward the magnetic circuit system to form a first flange, and the first flange is connected to the support member and surrounds the hollow hole to form the hollow hole.

4. The sound-emitting unit according to claim 2, characterized in that: The second diaphragm assembly includes a second diaphragm, which includes a central portion, a folded ring portion arranged around the central portion, and an external fixing portion located outside the folded ring portion, the external fixing portion is connected to the support member, and one end of the second voice coil is connected to the central portion.

5. The sound-emitting unit according to claim 4, characterized in that: Along the first direction, the central portion is opposite to the hollow hole; And / or, along the first direction, at least a portion of the folded ring portion is opposite to the hollow hole.

6. The sound-emitting unit according to claim 4, characterized in that: The outer side of the outer fixing portion is bent toward the magnetic circuit system to form a second flange, and the second flange is connected to the support member; And / or, the protruding direction of the folding ring portion is opposite to the protruding direction of the inner folding ring portion; And / or, the central portion is provided with a hollow hole, and the second diaphragm assembly further comprises a spherical top, and the spherical top is connected to the central portion to cover the hollow hole; And / or, the distance from one end of the folding ring portion connected to the outer fixing portion to the central axis of the sound-emitting unit is not less than the distance from one end of the inner folding ring portion connected to the inner ring portion to the central axis of the sound-emitting unit.

7. The sound-emitting unit according to claim 1, characterized in that: The support member includes a main body portion, the main body portion includes a first support portion and a second support portion arranged at an angle, one end of the first support portion away from the second support portion is connected to the magnetic circuit system, at least a portion of the second support portion extends in a direction close to the second voice coil, and the inner peripheral side of the first diaphragm assembly and the outer peripheral side of the second diaphragm assembly are both connected to the second support portion.

8. The sound-emitting unit according to claim 7, characterized in that: The second supporting portion includes an upper surface and a lower surface spaced apart along the first direction, the inner peripheral side of the first diaphragm assembly is connected to the upper surface, and the outer peripheral side of the second diaphragm assembly is connected to the lower surface.

9. The sound-emitting unit according to claim 8, characterized in that: The second supporting portion further includes an inner surface connecting the upper surface and the lower surface, the inner peripheral side of the first diaphragm assembly is bent toward the magnetic circuit system to form a first flange, and the first flange is connected to the inner surface; And / or, the first supporting portion has an inner wall connected to the lower surface and extending along the first direction, and the outer peripheral side of the second diaphragm assembly is bent toward the magnetic circuit system to form a second flange, and the second flange is connected to the inner wall.

10. The sound-emitting unit according to claim 1, characterized in that: The support member includes a main body and a plurality of connecting parts arranged on the periphery of the main body, and the inner periphery of the first diaphragm assembly and the outer periphery of the second diaphragm assembly are both connected to the main body; The sound unit also includes a first centering support plate and a second centering support plate, wherein two ends of the first centering support plate are respectively connected to the first voice coil and a part of the connecting portion, and two ends of the second centering support plate are respectively connected to the second voice coil and another part of the connecting portion.

11. The sound-emitting unit according to claim 10, characterized in that: The main body is in a square ring shape, and the plurality of connecting parts are respectively arranged at the four corners of the main body and extend outward relative to the main body; And / or, the first centering support plates include two, and the two first centering support plates are symmetrically arranged at diagonal positions of the main body; And / or, the second centering support plates include two, and the two second centering support plates are symmetrically arranged at diagonal positions of the main body; And / or, along the circumferential direction of the main body, the first centering support pieces and the second centering support pieces are distributed alternately.

12. The sound-emitting unit according to claim 10, characterized in that: The magnetic circuit system is provided with a plurality of avoidance gaps connecting the first magnetic gap and the second magnetic gap, and the first centering support plate and the second centering support plate are respectively arranged in the corresponding avoidance gaps.

13. The sound-emitting unit according to claim 12, characterized in that: The magnetic circuit system is further provided with a through hole corresponding to the avoidance gap, and the sound-emitting unit also includes a flexible circuit board arranged on the side of the magnetic circuit system facing away from the vibration system, and the flexible circuit board includes a main body and an extension part connected to the main body, one end of the extension part passes through the through hole and is electrically connected to the first centering support plate and / or the second centering support plate.

14. The sound-emitting unit according to claim 13, characterized in that: A concave groove is further provided on a side of the magnetic circuit system facing away from the vibration system, corresponding to the flexible circuit board, and the flexible circuit board is accommodated in the concave groove; And / or, the sound-emitting unit further includes a mesh cloth, and the mesh cloth covers the through hole.

15. The sound-emitting unit according to claim 1, characterized in that: The magnetic circuit system includes a yoke and a central magnetic portion, a first side magnetic portion and a second side magnetic portion arranged on the same side of the yoke, the first side magnetic portion being located on the outside of the central magnetic portion and spaced from the central magnetic portion to form the second magnetic gap, the second side magnetic portion being located on the outside of the first side magnetic portion and spaced from the first side magnetic portion to form the first magnetic gap.

16. The sound-emitting unit according to claim 15, characterized in that: The first side magnetic parts include a plurality of first side magnetic parts, the plurality of first side magnetic parts are arranged around the central magnetic part, and two adjacent first side magnetic parts are spaced to form an avoidance gap, and some of the support members are arranged corresponding to the avoidance gap; And / or, the second edge magnet part forms a closed integral ring structure; or, the second edge magnet part includes a plurality of adjacent second edge magnet parts, and the adjacent second edge magnet parts are connected end to end to form a closed ring structure; And / or, the support member is arranged on the first edge magnetic portion.

17. The sound-emitting unit according to claim 1, characterized in that: The sound-emitting unit further comprises a shell, one end of which is connected to the magnetic circuit system, and the other end of which is connected to the outer periphery of the first diaphragm assembly; The sound unit further includes a first centering support plate and a second centering support plate, wherein two ends of the first centering support plate are respectively connected to the first voice coil and the housing, and two ends of the second centering support plate are respectively connected to the second voice coil and the supporting member.

18. The sound-emitting unit according to any one of claims 1 to 17, characterized in that: The sound-emitting monomer also has a second state; In the second state, the first vibration component and the second vibration component radiate sound waves of the same phase outwardly; And / or, in the first state, the vibration directions of the first vibration component and the second vibration component are opposite; in the second state, the vibration directions of the first vibration component and the second vibration component are the same.

19. A sound module, characterized in that: The sound module includes a module shell and a sound unit as described in any one of claims 1 to 18, the sound unit is arranged in the module shell, the module shell is provided with a first sound channel corresponding to the first vibration component of the sound unit and a second sound channel corresponding to the second vibration component of the sound unit, the first sound channel and the second sound channel are isolated from each other.

20. An electronic device, characterized in that: The electronic device comprises a sound-emitting unit as claimed in any one of claims 1 to 18; Or, the electronic device includes the sound module as described in claim 19.

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