Sound production monomer and sound production module

Abstract

The utility model discloses a sounding monomer and a sounding module, and relates to the technical field of electroacoustic transduction, a side yoke plate of a magnet yoke is located at the outer side of a central yoke plate and is not coplanar with the central yoke plate, a first magnetic assembly is arranged at the central yoke plate, a side magnetic part of the first magnetic assembly is arranged corresponding to two long axis sides of a central magnetic part, a second magnetic assembly is arranged at the side yoke plate, and the second magnetic assembly is arranged on the side yoke plate. The vibration system comprises a first vibration assembly and a second vibration assembly which vibrate in the first direction. Wherein the surface of one side, departing from the central yoke plate, of the first magnetic assembly is lower than one end, departing from the central yoke plate, of the inner surface of the connecting plate, a first vibration space is formed between the first magnetic assembly and the connecting plate, the periphery of the first vibrating diaphragm is connected to the side yoke plate, and when the sound production monomer works, at least part of the first vibrating diaphragm vibrates in the first vibration space. According to the sound production monomer, the height in the Z direction is effectively reduced, the light and thin design can be realized, the acoustic dipole can be realized, and the technical effect of far-field noise reduction is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic transducer, in particular to a sound-generating monomer and a sound-generating module 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, such as portability, comfort, aesthetics, and call privacy, which have become the focus of people's attention. 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 photography, 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 thinner and lighter become higher and higher, the assembly space for micro sound devices in electronic devices is getting smaller and smaller. In order to meet the requirements of acoustic performance, a larger vibration space needs to be reserved to meet the needs of large amplitude. At present, conventional speaker solutions are difficult to take into account multiple design requirements such as performance, thinness and lightness, and call privacy at the same time. Utility Model Content

[0004] The main purpose of the utility model is to provide a sound unit and a sound module, aiming to provide a sound unit that effectively reduces the height in the Z direction, the sound unit can achieve the effect of far-field silencing, and can also achieve an ultra-thin design of the sound unit and the module, occupying a small assembly space.

[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, the magnetic circuit system comprising a yoke, a first magnetic assembly and a second magnetic assembly, the yoke comprising a central yoke plate, a side yoke plate and a connecting plate connecting the central yoke plate and the side yoke plate, the side yoke plate being located on the outside of the central yoke plate and not coplanar with the central yoke plate, the first magnetic assembly comprising a central magnetic portion and a side magnetic portion provided on the central yoke plate, the central magnetic portion having two long axis sides and two short axis sides connected end to end, the side magnetic portions being provided corresponding to the two long axis sides and being spaced from the central magnetic portion to form a first magnetic gap, the second magnetic assembly being provided on the side yoke plate and being spaced from the connecting plate to form a second magnetic gap; and

[0007] A vibration system, the vibration system comprising a first vibration component and a second vibration component vibrating in a first direction, the first vibration component comprising a first diaphragm and a first voice coil, the first voice coil being connected to the first diaphragm and arranged corresponding to the first magnetic gap, the second vibration component comprising a second diaphragm and a second voice coil, the second voice coil being arranged corresponding to the second magnetic gap;

[0008] Among them, the surface of the first magnetic component facing away from the central yoke plate is lower than the inner surface of the connecting plate facing away from the central yoke plate, and a first vibration space is formed therebetween, and the periphery of the first diaphragm is connected to the side yoke plate, and when the sound unit is working, at least part of the first diaphragm vibrates in the first vibration space; the sound unit has a first working state, and in the first working state, the first vibration component and the second vibration component radiate sound waves of opposite phases outward.

[0009] In one embodiment, the central magnetic portion includes a stacked central magnet and a central magnetic conductive plate, the central magnet is connected to the central yoke plate, the side magnetic portion includes stacked side magnets and side magnetic conductive plates, the side magnets are connected to the central yoke plate, the side magnets include two side magnets, each of the side magnets is arranged corresponding to one side of the long axis, and the magnetization direction of the central magnet is opposite to that of the side magnets.

[0010] In one embodiment, the second magnetic component includes a first magnet, an outer magnetic conductive plate and a second magnet which are stacked, the first magnet is connected to the side yoke plate, the first magnet and the second magnet have opposite magnetizing directions, and the magnetizing direction of the first magnet is opposite to that of the side magnet.

[0011] In one embodiment, the first diaphragm includes a first central portion, a first folding ring portion surrounding the first central portion, and a first fixed portion connected to the outer side of the first folding ring portion, the first fixed portion is connected to the side yoke plate, the first voice coil is connected to the first central portion, the first folding ring portion protrudes toward the first vibration space, and at least a portion of the first folding ring portion is located in the first vibration space.

[0012] In one embodiment, along the first direction, the second magnetic component is used to form an inner surface of the second magnetic gap whose end facing away from the side yoke plate is lower than the surface of the center yoke plate facing away from the first magnetic component, and a second vibration space is formed therebetween, and the periphery of the second diaphragm is connected to the second magnetic component, and when the sound unit is working, at least a portion of the second diaphragm vibrates in the second vibration space.

[0013] In one embodiment, the second diaphragm includes a second central portion, a second folding portion surrounding the second central portion, and a second fixing portion connected to the outer side of the second folding portion, the second fixing portion is connected to the second magnetic assembly, the second folding portion protrudes toward the second vibration space, and at least a portion of the second folding portion is located in the second vibration space;

[0014] And / or, the second vibration component also includes a bracket, the magnetic yoke is also provided with an escape space connecting the first magnetic gap and the second magnetic gap, one end of the bracket is connected to the second diaphragm, and the other end of the bracket passes through the escape space and extends into the second magnetic gap and is connected to the second voice coil; the second diaphragm is arranged in a square shape, and the bracket includes two, and the two brackets are arranged respectively corresponding to the short sides of the second diaphragm.

[0015] In one embodiment, the first diaphragm is provided with a first conductive layer, and the lead wire of the first voice coil is electrically connected to the first conductive layer;

[0016] The sound-emitting unit further includes a flexible circuit board connected to the first diaphragm, and the flexible circuit board is electrically connected to the first conductive layer and an external circuit.

[0017] In one embodiment, the flexible circuit board is sandwiched between the first diaphragm and the side yoke plate;

[0018] And / or, the flexible circuit board includes a main body and an extension portion formed by extending outward from the main body, the main body is provided with an inner pad, the inner pad is electrically connected to the first conductive layer, and the extension portion is provided with an outer pad at one end away from the main body, the outer pad is electrically connected to an external circuit;

[0019] And / or, the first diaphragm includes a first central portion, a first folding portion surrounding the first central portion, and a first fixing portion connected to the outer side of the first folding portion, and the first conductive layer extends from the first central portion to the first fixing portion.

[0020] In one embodiment, the second diaphragm is provided with a second conductive layer, the second vibration component further includes a bracket, the bracket has a conductive path, the bracket is provided with a first soldering pad and a second soldering pad, the first soldering pad is electrically connected to the lead of the second voice coil, and the second soldering pad is electrically connected to the second conductive layer.

[0021] In one embodiment, the sound unit also includes an external terminal, which is connected to the second magnetic component and electrically connected to an external circuit. The second diaphragm includes a second central portion, a second folding ring portion surrounding the second central portion, and a second fixed portion connected to the outer side of the second folding ring portion. The second fixed portion extends toward the external terminal to form a protrusion. The second conductive layer extends from the second central portion to the protrusion, and the protrusion is connected to the external terminal so that the second conductive layer is electrically connected to the external terminal.

[0022] In one embodiment, the sound unit further includes a shell, and the shell is connected to the second magnetic assembly and the second diaphragm.

[0023] In one embodiment, at least a portion of the periphery of the second diaphragm is sandwiched between the housing and the second magnetic assembly;

[0024] And / or, the housing is provided with a sound outlet hole corresponding to the second diaphragm;

[0025] And / or, the second magnetic assembly is further provided with an air leakage channel connected to the second magnetic gap, the magnetic yoke and / or the housing is provided with an air leakage hole, and the air leakage hole is connected to the air leakage channel;

[0026] And / or, the magnetic yoke further comprises a first bent portion formed by at least a portion of the side yoke plate being bent and extended toward the second magnetic component at one end away from the connecting plate, the first bent portion comprises a plurality of first bent portions, a first notch is provided between adjacent first bent portions, at least a portion of the second magnetic component is exposed in the first notch, and the first bent portion abuts against the housing;

[0027] And / or, the shell also includes a second bending portion formed by bending and extending toward the second magnetic component, the second bending portion includes a plurality of second bending portions, a second notch is provided between adjacent second bending portions, at least a portion of the second magnetic component is exposed in the second notch, and the second bending portion abuts against the magnetic yoke.

[0028] In one embodiment, the sound-emitting unit further has a second working state. In the second working state, the first vibration component and the second vibration component radiate sound waves of the same phase outwardly.

[0029] 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 outlet for a first vibration component of the sound unit to radiate sound waves outwardly and a second sound outlet for a second vibration component of the sound unit to radiate sound waves outwardly, and the first sound outlet and the second sound outlet are isolated from each other.

[0030] The sound-emitting unit of the technical solution of the utility model is configured such that the yoke of the magnetic circuit system is configured as a central yoke plate, a side yoke plate and a connecting plate connecting the central yoke plate and the side yoke plate, so that the side yoke plate is located on the outside of the central yoke plate and is not coplanar with the central yoke plate. In this way, the central yoke plate and the connecting plate of the magnetic yoke are used to enclose a space for installing and limiting the first magnetic component, and the connecting plate and the side yoke plate are used to implement installation and limiting of the second magnetic component, so that the second magnetic component is arranged on the side yoke plate and is spaced from the connecting plate to form a second magnetic gap. The first magnetic component is arranged on the central yoke plate, and the first magnetic component is configured to be arranged on the central magnetic part and the side magnetic part of the central yoke plate, so that the central The magnetic part has two long axis sides and two short axis sides connected end to end, so that the side magnetic parts are arranged corresponding to the two long axis sides and are spaced from the central magnetic part to form a first magnetic gap, so that the first magnetic component and the second magnetic component of the magnetic circuit system are installed and fixed at the same time by using the magnetic yoke, and the vibration system is arranged to be a first vibration component and a second vibration component vibrating along a first direction, so that the first voice coil of the first vibration component is connected to the first diaphragm and is arranged corresponding to the first magnetic gap, and the second voice coil of the second vibration component is arranged corresponding to the second magnetic gap, so that the double vibration component arrangement structure of the sound-emitting unit is realized, and the traditional speaker is eliminated by setting a shell to achieve The setting of the double-sided vibration component and the reservation of the vibration space effectively reduce the height of the sound unit in the Z direction, and make the first vibration component and the second vibration component of the vibration system share a magnetic circuit system, effectively simplifying the structural setting of the magnetic circuit system, and making the design of the magnetic circuit system and the vibration system more compact, reducing the volume of the sound unit; at the same time, the surface of the first magnetic component facing away from the center yoke plate is lower than the inner surface of the connecting plate facing away from the center yoke plate, so that a first vibration space is formed between the first magnetic component and the connecting plate, and the periphery of the first diaphragm is connected to the side yoke plate, so that when the sound unit is working, at least the first diaphragm Part of it vibrates in the first vibration space, thereby effectively reducing the height of the sound unit in the Z direction, realizing an ultra-thin design of the sound unit and occupying a small assembly space; further, by setting the first vibration component and the second vibration component to vibrate along the first direction, the first vibration component and the second vibration component can work independently at the same time, so that the sound unit has a first working state in which the first vibration component and the second vibration component radiate sound waves of opposite phases outwardly, thereby, 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

[0031] 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.

[0032] Figure 1 A schematic diagram of the structure of an embodiment of a sound-emitting unit provided by the utility model;

[0033] Figure 2 A schematic structural diagram of another perspective of an embodiment of a sound-emitting unit provided by the utility model;

[0034] Figure 3 This is an exploded schematic diagram of an embodiment of a sound-generating unit provided by the utility model;

[0035] Figure 4 A schematic cross-sectional view of an embodiment of a sound-emitting unit provided by the utility model along the direction of the long axis;

[0036] Figure 5 A schematic cross-sectional view of an embodiment of a sound-emitting unit provided by the utility model along the direction of the minor axis;

[0037] Figure 6 for Figure 5 A partially exploded schematic diagram of

[0038] Figure 7 A schematic diagram of the structure of a sound-emitting unit provided by the utility model without the first diaphragm;

[0039] Figure 8 A partial structural schematic diagram of an embodiment of a sound-generating unit provided by the utility model;

[0040] Fig. 9 A schematic diagram of the structure of a magnetic yoke in an embodiment of a sound-generating unit provided by the utility model;

[0041] Fig.10 A schematic diagram of the structure of the connection between the second voice coil and the bracket in an embodiment of the sound-emitting unit provided by the utility model;

[0042] Fig.11 A schematic diagram of the structure of the first diaphragm in an embodiment of a sound-emitting unit provided by the utility model;

[0043] Fig.12 A schematic diagram of the structure of a flexible circuit board in an embodiment of a sound-emitting unit provided by the utility model;

[0044] Fig.13A schematic diagram of the structure of the second diaphragm in an embodiment of a sound-emitting unit provided by the utility model;

[0045] Fig.14 A schematic diagram of simulated magnetic flux lines of an embodiment of a sound-generating unit provided by the utility model;

[0046] Fig.15 Schematic diagram of simulated magnetic flux lines for comparative example;

[0047] Fig.16 A cross-sectional schematic diagram of an embodiment of a sound module provided by the utility model.

[0048] Description of Figure Numbers:

[0049] 100, sound-generating unit; 1, shell; 11, sound-generating hole; 12, second bending part; 13, second notch; 2, magnetic circuit system; 21, magnetic yoke; 211, center yoke plate; 212, side yoke plate; 213, connecting plate; 214, first bending part; 215, avoidance space; 216, air leakage hole; 217, first notch; 22, first magnetic component; 221, first magnetic gap; 222, center magnetic part; 2221, center magnet; 2222, center magnetic plate; 223, side magnetic part; 2231, side magnet; 2232, side magnetic plate; 224, first vibration space; 23, second magnetic component; 231, second magnetic gap; 232, first magnet; 233, outer magnetic plate; 234, second magnet; 235, second vibration space; 236, air leakage channel; 3, vibration system; 3 1. First vibration component; 311. First diaphragm; 3111. First central part; 3112. First folding ring part; 3113. First fixing part; 3114. First conductive layer; 312. First voice coil; 313. Flexible circuit board; 3131. Main body; 3132. Extension part; 3133. Inner pad; 3134. Outer pad; 32. Second vibration component; 321. Second diaphragm; 3211. Second central part; 3212. Second folding ring part; 3213. Second fixing part; 3214. Protruding part; 3215. Second conductive layer; 322. Second voice coil; 323. Bracket; 4. External terminal; 500. Module housing; 501. Middle housing; 502. Upper cover; 510. First sound outlet; 520. Second sound outlet; 530. Installation space; 600. Sound module.

[0050] 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

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] The utility model provides a sound-emitting unit 100. It can be understood that the sound-emitting unit 100 is applied to electronic devices, and the electronic devices can be headphones, VR, AR, Glass, etc., which are not limited here.

[0056] Please refer to Figures 1 to 13As shown, in the embodiment of the utility model, the sound-generating monomer 100 includes a magnetic circuit system 2 and a vibration system 3, the magnetic circuit system 2 includes a yoke 21, a first magnetic component 22 and a second magnetic component 23, the yoke 21 includes a central yoke plate 211, a side yoke plate 212 and a connecting plate 213 connecting the central yoke plate 211 and the side yoke plate 212, the side yoke plate 212 is located on the outer side of the central yoke plate 211 and is not coplanar with the central yoke plate 211, the first magnetic component 22 is arranged on the central yoke plate 211, and is provided with a first magnetic gap 221, the second magnetic component 23 is provided with a first magnetic gap 222, and the second magnetic component 23 is provided with a first magnetic gap 223. The component 23 is arranged on the side yoke plate 212 and is spaced from the connecting plate 213 to form a second magnetic gap 231; the vibration system 3 includes a first vibration component 31 and a second vibration component 32 which vibrates along a first direction, the first vibration component 31 includes a first diaphragm 311 and a first voice coil 312, the first voice coil 312 is connected to the first diaphragm 311 and is arranged corresponding to the first magnetic gap 221, the second vibration component 32 includes a second diaphragm 321 and a second voice coil 322, the second voice coil 322 is arranged corresponding to the second magnetic gap 231.

[0057] In this embodiment, the sound-generating unit 100 is a micro speaker. It should be noted that the magnetic circuit system 2 and the vibration system 3 of the sound-generating unit 100 are arranged relative to each other. Optionally, the magnetic circuit system 2 can be arranged in a square shape. Optionally, the vibration system 3 is also arranged in a square shape. It can be understood that the periphery of the vibration system 3 can be connected to the magnetic circuit system 2, or the magnetic circuit system 2 and the vibration system 3 can be respectively assembled on the outer shell or the module shell, etc., which is not limited here.

[0058] It can be understood that by setting the yoke 21 of the magnetic circuit system 2 as a central yoke plate 211, a side yoke plate 212 and a connecting plate 213 connecting the central yoke plate 211 and the side yoke plate 212, that is, the side yoke plate 212 is connected to the central yoke plate 211 through the connecting plate 213, and the side yoke plate 212 is located on the outside of the central yoke plate 211 and is not coplanar with the central yoke plate 211, so that the connecting plate 213 of the yoke 21 is set at an angle to the central yoke plate 211, and the connecting plate 213 is set at an angle to the side yoke plate 212, so that the connecting plate 213 of the yoke 21 and the central yoke plate 211 are used to enclose an installation space for installing the first magnetic component 22 of the magnetic circuit system 2 for fixing and limiting, and the side yoke plate 212 and the connecting plate 213 are used to enclose an installation space for installing the second magnetic component 23 of the magnetic circuit system 2 for fixing and limiting.

[0059] In this embodiment, the connecting plate 213 is arranged at the periphery of the central yoke plate 211 and is arranged at an angle to the central yoke plate 211. Optionally, the connecting plate 213 is arranged perpendicular to the central yoke plate 211. It can be understood that the side yoke plate 212 is connected to one end of the connecting plate 213 away from the central yoke plate 211 and is arranged at an angle to the connecting plate 213. Optionally, the side yoke plate 212 is arranged perpendicular to the connecting plate 213.

[0060] In one embodiment, the side yoke plate 212 and the center yoke plate 211 are both arranged perpendicularly to the connecting plate 213, and the side yoke plate 212 and the center yoke plate 211 are located on opposite sides of the connecting plate 213. Optionally, the side yoke plate 212 and the center yoke plate 211 are arranged in parallel. In this embodiment, the cross-sections of the side yoke plate 212, the connecting plate 213 and the center yoke plate 211 of the yoke 21 are arranged in a right-angle Z shape.

[0061] Optionally, the connecting plate 213 is arranged around the periphery of the central yoke plate 211, so that the connecting plate 213 and the central yoke plate 211 enclose a groove structure with a U-shaped cross section, and the first magnetic component 22 is arranged in the groove structure. Optionally, the side yoke plate 212 is arranged around the periphery of the connecting plate 213 away from the central yoke plate 211, that is, the side yoke plate 212 is arranged around the periphery of the groove structure enclosed by the connecting plate 213 and the central yoke plate 211, so that the side yoke plate 212 and the connecting plate 213 enclose an installation space located outside the groove structure, and the second magnetic component 23 is arranged on the side yoke plate 212 and is arranged around the connecting plate 213, so that the second magnetic component 23 is spaced from the connecting plate 213 to enclose a second magnetic gap 231. In this embodiment, the shape of the magnetic yoke 21 is generally a hat or straw hat structure, which is not limited here.

[0062] In one embodiment, the first vibration component 31 and the second vibration component 32 of the vibration system 3 are respectively arranged corresponding to the first magnetic component 22 and the second magnetic component 23. Optionally, the first vibration component 31 and the second vibration component 32 are respectively arranged on opposite sides of the magnetic circuit system 2, so that a double-sided sound structure of the sound-emitting unit 100 can be formed.

[0063] In this embodiment, the periphery of the first vibration component 31 is connected to the side yoke plate 212 of the magnetic yoke 21, so that the first diaphragm 311 of the first vibration component 31 is opposite to and spaced from the first magnetic component 22, so that the first voice coil 312 is connected to the first diaphragm 311 and is arranged corresponding to the first magnetic gap 221. The periphery of the second vibration component 32 is connected to the side of the second magnetic component 23 facing away from the side yoke plate 212, so that the second diaphragm 321 of the second vibration component 32 is supported and installed by the second magnetic component 23, and is opposite to and spaced from the center yoke plate 211 of the magnetic yoke 21, so that the second voice coil 322 is arranged corresponding to the second magnetic gap 231.

[0064] It can be understood that the second magnetic component 23 cooperates with the yoke 21 and the first magnetic component 22 to form an integral magnetic circuit system 2, so that the first vibration component 31 and the second vibration component 32 of the vibration system 3 are respectively arranged on the opposite sides of the magnetic circuit system 2 and share a magnetic circuit system 2, which not only effectively simplifies the structural setting of the magnetic circuit system 2, but also makes the design of the magnetic circuit system 2 and the vibration system 3 more compact, reducing the volume of the sound unit 100, thereby eliminating the setting of the double-sided vibration component and the reservation of the vibration space by setting the outer shell in the traditional speaker, and effectively reducing the Z-direction height of the sound unit 100.

[0065] In this embodiment, the first vibration component 31 and the second vibration component 32 are arranged on opposite sides of the magnetic circuit system 2 and vibrate in the first direction, so that the first vibration component 31 and the second vibration component 32 can work independently at the same time. It can be understood that when the sound-emitting monomer 100 is working, the sound-emitting monomer 100 has a first working state in which the first vibration component 31 and the second vibration component 32 simultaneously radiate sound waves of opposite phases, so that the sound waves with opposite phases generated by the first vibration component 31 and the second vibration component 32 can cancel each other in the far field to achieve a noise reduction effect, which can improve the call privacy of the terminal device.

[0066] In one embodiment, the sound-emitting monomer 100 also has a second working state, in which the first vibration component 31 and the second vibration component 32 radiate sound waves of the same phase. It can be understood that when the sound-emitting monomer 100 is working, the sound-emitting monomer 100 has a second working state in which the first vibration component 31 and the second vibration component 32 simultaneously radiate sound waves of the same phase, thereby utilizing the superposition of sound waves of the same phase generated by the first vibration component 31 and the second vibration component 32 to increase the sound volume of the sound-emitting monomer 100.

[0067] In this embodiment, the sound-emitting monomer 100 has two working states, that is, the sound-emitting monomer 100 has a first working state and a second working state. In the first working state, the first vibration component 31 and the second vibration component 32 radiate sound waves of opposite phases outwardly; in the second working 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 working state, which can achieve the effect of quiet calls without sound leakage; when the electronic device is in the external speaker mode, the sound-emitting monomer 100 is in the second working state, thereby improving the external speaker effect of the electronic device.

[0068] It should be noted that when the sound-emitting monomer 100 is in the first working state, the first vibration component 31 and the second vibration component 32 are used to radiate sound waves of opposite phases to form a dipole effect in the far field (for example, a distance of 20 cm to 50 cm 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. When the sound-emitting monomer 100 is in the second working state, the first vibration component 31 and the second vibration component 32 are used to radiate sound waves of the same phase to increase the sound effect, so that the electronic device can achieve an external speaker mode with a higher volume and better sound effect.

[0069] In one embodiment, the surface of the first magnetic component 22 facing away from the central yoke plate 211 is lower than the inner surface of the connecting plate 213 facing away from the central yoke plate 211, and a first vibration space 224 is formed therebetween. The periphery of the first diaphragm 311 is connected to the side yoke plate 212. When the sound unit 100 is working, at least a portion of the first diaphragm 311 vibrates in the first vibration space 224.

[0070] In this embodiment, if Figures 3 to 7 As shown, the first magnetic component 22 is arranged on the central yoke plate 211 and is located in a groove structure enclosed by the connecting plate 213 of the magnetic yoke 21 and the central yoke plate 211. By setting the surface of the first magnetic component 22 away from the central yoke plate 211 to be lower than the end surface of the connecting plate 213 away from the central yoke plate 211, that is, there is a height difference between the end surface of the connecting plate 213 away from the central yoke plate 211 and the surface of the first magnetic component 22 away from the central yoke plate 211, a first vibration space 224 is formed between the end surface of the connecting plate 213 away from the central yoke plate 211 and the surface of the first magnetic component 22 away from the central yoke plate 211.

[0071] Optionally, the side yoke plate 212 is connected to an end of the connecting plate 213 away from the center yoke plate 211. In this embodiment, the direction from the first diaphragm 311 to the first magnetic component 22 is defined as the first direction, the first direction is a vertically downward direction, and the surface of the first magnetic component 22 away from the center yoke plate 211 is lower than the surface of the side yoke plate 212 away from the second magnetic component 23. It can be understood that along the first direction, the first vibration component 31 is located above the second vibration component 32.

[0072] It can be understood that the periphery of the first diaphragm 311 of the first vibration component 31 is connected to the surface of the side yoke plate 212 facing away from the second magnetic component 23. When the sound unit 100 is working, at least a part of the first diaphragm 311 vibrates in the first vibration space 224, thereby effectively utilizing the height difference between the side yoke plate 212 of the magnetic yoke 21 and the first magnetic component 22 to provide a first vibration space 224 for the vibration of the first diaphragm 311. In this way, there is no need to reserve a vibration space on the side of the side yoke plate 212 of the sound unit 100 facing away from the second magnetic component 23, thereby effectively reducing the height of the sound unit 100 in the Z direction, that is, canceling the height space reserved for supporting the first vibration component 31 to a certain height by using the outer shell in the traditional speaker.

[0073] In one embodiment, along the first direction, the second magnetic component 23 is used to form an inner surface of the second magnetic gap 231, the end of which is away from the side yoke plate 212 and is lower than the surface of the center yoke plate 211 facing away from the first magnetic component 22, and a second vibration space 235 is formed therebetween. The periphery of the second diaphragm 321 is connected to the second magnetic component 23, and when the sound unit 100 is working, at least a portion of the second diaphragm 321 vibrates in the second vibration space 235.

[0074] In this embodiment, if Figures 3 to 6 As shown, the second magnetic component 23 is arranged on the side yoke plate 212 and is arranged around the connecting plate 213, that is, the second magnetic component 23 is located outside the connecting plate 213 and the first magnetic component 22. By setting the end of the inner surface of the second magnetic component 23 used to form the second magnetic gap 231 facing away from the side yoke plate 212 to be lower than the surface of the central yoke plate 211 facing away from the first magnetic component 22, that is, there is a height difference between the surface of the central yoke plate 211 facing away from the first magnetic component 22 and the end of the inner surface of the second magnetic component 23 used to form the second magnetic gap 231 facing away from the side yoke plate 212, so that a second vibration space 235 is formed between the surface of the central yoke plate 211 facing away from the first magnetic component 22 and the end of the inner surface of the second magnetic component 23 used to form the second magnetic gap 231 facing away from the side yoke plate 212.

[0075] In this embodiment, the direction from the first diaphragm 311 to the first magnetic component 22 is defined as the first direction, and the first direction is a vertical downward direction. The second magnetic component 23 is used to form an inner surface of the second magnetic gap 231, the end of which is facing away from the side yoke plate 212 and is lower than the surface of the center yoke plate 211 facing away from the first magnetic component 22. It can be understood that the periphery of the second diaphragm 321 of the second vibration component 32 is connected to the surface of the second magnetic component 23 on the side facing away from the side yoke plate 212, so that the second vibration component 32 is directly installed and fixed by using the second magnetic component 23, and when the sound unit 100 is working, at least a part of the second diaphragm 321 vibrates in the second vibration space 235, thereby effectively utilizing the height difference between the central yoke plate 211 of the magnetic yoke 21 and the second magnetic component 23 to provide a second vibration space 235 for the vibration of the second diaphragm 321. In this way, there is no need to reserve a vibration space on the side of the second magnetic component 23 of the sound unit 100 facing away from the side yoke plate 212, thereby effectively reducing the height of the sound unit 100 in the Z direction, that is, canceling the height space reserved for supporting the second vibration component 32 to a certain height by using the outer shell in the traditional speaker.

[0076] In one embodiment, the sound-emitting unit 100 includes a magnetic circuit system 2 and a vibration system 3, the magnetic circuit system 2 includes a yoke 21, a first magnetic component 22 and a second magnetic component 23, the yoke 21 includes a central yoke plate 211, a side yoke plate 212 and a connecting plate 213 connecting the central yoke plate 211 and the side yoke plate 212, the side yoke plate 212 is located on the outer side of the central yoke plate 211 and is not coplanar with the central yoke plate 211, the first magnetic component 22 includes a central magnetic portion 222 and a side magnetic portion 223 provided on the central yoke plate 211, the central magnetic portion 222 has two long axis sides and two short axis sides connected end to end, and the side magnetic portion 223 corresponds to two The long axis side is arranged and is spaced from the central magnetic part 222 to form a first magnetic gap 221. The second magnetic component 23 is arranged on the side yoke plate 212 and is spaced from the connecting plate 213 to form a second magnetic gap 231. The vibration system 3 includes a first vibration component 31 and a second vibration component 32 which vibrates along a first direction. The first vibration component 31 includes a first diaphragm 311 and a first voice coil 312. The first voice coil 312 is connected to the first diaphragm 311 and is arranged corresponding to the first magnetic gap 221. The second vibration component 32 includes a second diaphragm 321 and a second voice coil 322. The second voice coil 322 is arranged corresponding to the second magnetic gap 231.

[0077] In this embodiment, the surface of the first magnetic component 22 facing away from the central yoke plate 211 is lower than the end of the inner surface of the connecting plate 213 facing away from the central yoke plate 211, and a first vibration space 224 is formed therebetween. The periphery of the first diaphragm 311 is connected to the side yoke plate 212. When the sound unit 100 is working, at least part of the first diaphragm 311 vibrates in the first vibration space 224. The sound unit 100 has a first working state. In the first working state, the first vibration component 31 and the second vibration component 32 radiate sound waves of opposite phases outward.

[0078] It can be understood that the sound-emitting unit 100 sets the yoke 21 of the magnetic circuit system 2 as a central yoke plate 211, a side yoke plate 212 and a connecting plate 213 connecting the central yoke plate 211 and the side yoke plate 212, so that the side yoke plate 212 is located on the outside of the central yoke plate 211 and is not coplanar with the central yoke plate 211. In this way, the central yoke plate 211 and the connecting plate 213 of the yoke 21 are used to enclose a space for installing and limiting the first magnetic component 22, and the connecting plate 213 and the side yoke plate 212 are used to realize installation and limiting of the second magnetic component 23, so that the second magnetic component 23 is arranged on the side yoke plate 212 and is spaced from the connecting plate 213 to form a second magnetic gap. 231, the first magnetic component 22 is arranged on the central yoke plate 211, and the first magnetic component 22 is arranged as a central magnetic part 222 and a side magnetic part 223 arranged on the central yoke plate 211, so that the central magnetic part 222 has two long axis sides and two short axis sides connected end to end, so that the side magnetic part 223 is arranged corresponding to the two long axis sides of the central magnetic part 222, and is spaced from the central magnetic part 222 to form a first magnetic gap 221, so that the first magnetic component 22 and the second magnetic component 23 of the magnetic circuit system 2 are installed and fixed at the same time by using the magnetic yoke 21, and the vibration system 3 is arranged as a first vibration group 31 and a second vibration group 32 that vibrates along a first direction, so that The first voice coil 312 of the first vibration component 31 is connected to the first diaphragm 311 and is arranged corresponding to the first magnetic gap 221, and the second voice coil 322 of the second vibration component 32 is arranged corresponding to the second magnetic gap 231, so that the double-vibration component setting structure of the sound-emitting unit 100 is realized, and the setting of the double-sided vibration component and the reservation of the vibration space by setting the shell in the traditional speaker are cancelled, and the Z-direction height of the sound-emitting unit 100 is effectively reduced, and the first vibration component 31 and the second vibration component 32 of the vibration system 3 share a magnetic circuit system 2, which effectively simplifies the structural setting of the magnetic circuit system 2 and makes the magnetic circuit system 2 and the vibration system 3 share a magnetic circuit system 2. The design of system 3 is more compact, reducing the volume of the sound unit 100; at the same time, the surface of the first magnetic component 22 facing away from the central yoke plate 211 is lower than the end of the inner surface of the connecting plate 213 facing away from the central yoke plate 211, so that a first vibration space 224 is formed between the first magnetic component 22 and the connecting plate 213, and the periphery of the first diaphragm 311 is connected to the side yoke plate 212, so that when the sound unit 100 is working, at least part of the first diaphragm 311 vibrates in the first vibration space 224, thereby effectively reducing the Z-direction height of the sound unit 100, realizing the ultra-thin design of the sound unit 100 and the module, and occupying a small assembly space;Further, by setting the first vibration component 31 and the second vibration component 32 to vibrate in 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-emitting unit 100 has a first working state in which the first vibration component 31 and the second vibration component 32 radiate sound waves with opposite phases outwardly, thereby, the sound waves with opposite phases generated by the first vibration component 31 and the second vibration component 32 can cancel each other in the far field to achieve a noise elimination effect, which can improve the call privacy of the terminal device. ;

[0079] In this embodiment, 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 221 is equivalent to or similar to the shape profile of the first voice coil 312, that is, the first magnetic gap 221 is also a rectangular magnetic gap or annular racetrack magnetic gap. The shape profile of the second magnetic gap 231 is equivalent to 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 second magnetic gap 231 is located at the periphery of the first magnetic gap 221, that is, the second voice coil 322 is located at the periphery of the first voice coil 312.

[0080] In order to facilitate the connection between the second voice coil 322 and the second diaphragm 321, in one embodiment, the second vibration component 32 also includes a bracket 323, and the second voice coil 322 is connected to the second diaphragm 321 through the bracket 323. In this way, the bracket 323 can not only connect the second voice coil 322 and the second diaphragm 321, but also make the second voice coil 322 located in the second magnetic gap 231 and on the outside of the connecting plate 213.

[0081] In order to avoid interference between the bracket 323 and the yoke 21, in one embodiment, the second vibration component 32 also includes a bracket 323, and the yoke 21 is also provided with an avoidance space 215 connecting the first magnetic gap 221 and the second magnetic gap 231. One end of the bracket 323 is connected to the second diaphragm 321, and the other end of the bracket 323 passes through the avoidance space 215 and extends into the second magnetic gap 231 and is connected to the second voice coil 322.

[0082] Understandable, such as Figure 3 , Figure 4 , Figure 6 , Figure 7 and Fig. 9 As shown, by setting an avoidance space 215 on the yoke 21, the avoidance space 215 is connected to the second magnetic gap 231 and the second vibration space 235, so that one end of the bracket 323 is conveniently connected to the second diaphragm 321, and the other end of the bracket 323 passes through the avoidance space 215 and extends into the second magnetic gap 231, and is connected to the second voice coil 322.

[0083] In this embodiment, the avoidance space 215 is opened in the central yoke plate 211 of the magnetic yoke 21, that is, the central yoke plate 211 of the magnetic yoke 21 is provided with a through hole structure, and the through hole structure constitutes the avoidance space 215. It can be understood that the avoidance space 215 is connected to the groove structure formed by the central yoke plate 211 and the connecting plate 213, that is, the avoidance space 215 is connected to the first magnetic gap 221 and the second magnetic gap 231.

[0084] Optionally, the second diaphragm 321 is arranged in a square shape. In this embodiment, the bracket 323 may optionally include two, and the two brackets 323 are arranged corresponding to the short sides of the second diaphragm 321 respectively. That is, the central yoke plate 211 of the magnetic yoke 21 is provided with an escape space 215 corresponding to the two short sides of the second diaphragm 321, so that one end of each bracket 323 is connected to the second diaphragm 321, and the other end of the bracket 323 passes through the escape space 215 and extends into the second magnetic gap 231, and is connected to the second voice coil 322.

[0085] Of course, in other embodiments, the bracket 323 may optionally include four brackets 323 , and the four brackets 323 are respectively arranged corresponding to the corners of the second diaphragm 321 , which is not limited here.

[0086] Optionally, one end of the bracket 323 is connected to a side of the second voice coil 322 away from the second diaphragm 321 .

[0087] In one embodiment, the second vibration component 32 also includes a bracket 323, and the yoke 21 is also provided with an escape space 215 connecting the first magnetic gap 221 and the second magnetic gap 231. One end of the bracket 323 is connected to the second diaphragm 321, and the other end of the bracket 323 passes through the escape space 215 and extends into the second magnetic gap 231, and is connected to the second voice coil 322; the second diaphragm 321 is arranged in a square shape, and the bracket 323 includes two brackets, and the two brackets 323 are arranged corresponding to the short sides of the second diaphragm 321 respectively.

[0088] In this embodiment, the first diaphragm 311 and the second diaphragm 321 are optionally arranged symmetrically along a plane perpendicular to the first direction. It can be understood that the direction from the first diaphragm 311 to the second diaphragm 321 is defined as the first direction, and the first direction is a vertically downward direction. By setting the first diaphragm 311 and the second diaphragm 321 as a vertically symmetrical structure, the parameters of the double-sided sound of the sound-emitting unit 100 can be consistent, which is beneficial to the performance debugging of the whole machine.

[0089] In one embodiment, if Figures 3 to 6 As shown, the first magnetic assembly 22 includes a central magnetic portion 222 and a side magnetic portion 223 disposed on the central yoke plate 211 . The side magnetic portion 223 is located outside the central magnetic portion 222 and is spaced apart from the central magnetic portion 222 to form a first magnetic gap 221 .

[0090] It can be understood that the central magnetic portion 222 and the side magnetic portion 223 of the first magnetic component 22 are laid flat on the side of the central yoke plate facing the first diaphragm 311. Optionally, the side of the central magnetic portion 222 and the side magnetic portion 223 of the first magnetic component 22 facing away from the central yoke plate are both lower than the end surface of the connecting plate 213 away from the end of the central yoke plate, so that there is a height difference between the end surface of the connecting plate 213 away from the end of the central yoke plate and the first magnetic component 22 to form a first vibration space 224.

[0091] In this embodiment, in order to facilitate the avoidance of the bracket 323, a through hole or a through hole is set at the position of the side magnetic portion 223 of the first magnetic component 22 corresponding to the avoidance space 215, so as to facilitate the end of the bracket 323 away from the second diaphragm 321 to pass through the avoidance space 215 and extend into the second magnetic gap 231 to connect with the second voice coil 322.

[0092] Optionally, the central magnetic part 222 has two long axis sides and two short axis sides connected end to end, and the side magnetic part 223 is arranged corresponding to the two long axis sides, and is spaced from the central magnetic part 222 to form a first magnetic gap 221. It can be understood that the central magnetic part 222 can be optionally arranged in a rectangular shape, and the long axis side and the short axis side of the central magnetic part 222 are connected end to end. By arranging the side magnetic part 223 on the outside of the two long axis sides of the central magnetic part 222, that is, not arranging the side magnetic part 223 on the outside of the two short axis sides of the central magnetic part 222, the first magnetic component 22 forms an avoidance space corresponding to the avoidance space 215, and avoids the bracket 323 together.

[0093] In one embodiment, the central magnetic portion 222 includes a stacked central magnet 2221 and a central magnetic conductive plate 2222, the central magnet 2221 is connected to the central yoke plate 211, and the side magnetic portion 223 includes a stacked side magnet 2231 and a side magnetic conductive plate 2232, the side magnet 2231 is connected to the central yoke plate 211, the side magnets 2231 include two side magnets, each side magnet 2231 is arranged corresponding to a long axis side, and the magnetization direction of the central magnet 2221 is opposite to the magnetization direction of the side magnet 2231.

[0094] In this embodiment, if Figures 3 to 6 As shown, the central magnetic part 222 includes a stacked central magnet 2221 and a central magnetic conductive plate 2222, and the central magnet 2221 is connected to the central yoke plate 211 of the yoke 21. The central magnet 2221 is sandwiched between the central magnetic conductive plate 2222 and the central yoke plate 211 of the yoke 21.

[0095] Optionally, in order to reduce the weight of the magnetic circuit system 2 and reduce the magnetic leakage of the central magnet 2221, a recessed area or a through-hole structure may be provided in the center of the central magnetic portion 222, which is not limited here.

[0096] In this embodiment, the side magnet part 223 includes a stacked side magnet 2231 and a side magnetic conductive plate 2232, and the side magnet 2231 is connected to the magnetic yoke 21. It can be understood that the side magnet 2231 and the side magnetic conductive plate 2232 of the side magnet part 223 are located outside the central magnetic part 222 and are spaced to form a first magnetic gap 221, and the side magnet 2231 is sandwiched between the central yoke plate 211 and the side magnetic conductive plate 2232 of the magnetic yoke 21.

[0097] In one embodiment, the edge magnetic portion 223 may be optionally arranged in an annular shape, in which case the annular edge magnetic portion 223 is located outside the central magnetic portion 222, and is spaced apart from the central magnetic portion 222 to form a first magnetic gap 221. Optionally, the edge magnetic conductive plate 2232 forms a closed integral annular structure. Of course, in other embodiments, the edge magnetic portion 223 includes a plurality of edge magnetic portions 223, which are spaced apart and arranged around the outside of the central magnetic portion 222, and are spaced apart from the central magnetic portion 222 to form a first magnetic gap 221.

[0098] It can be understood that the side magnets 2231 and the side magnetic conductive plates 2232 of the side magnetic part 223 are both multiple and arranged one by one, and the spacing between two adjacent side magnets 2231 and side magnetic conductive plates 2232 is to form an escape gap. The side magnetic conductive plates 2232 form a closed integral annular structure, and the side magnets 2231 are multiple, and the adjacent side magnets 2231 are spaced to form an escape gap, and are arranged corresponding to the annular side magnetic conductive plates 2232, further improving the performance of the magnetic circuit system 2.

[0099] It should be noted that, in order to facilitate avoiding the bracket 323, multiple side magnets 223 are arranged around the outside of the central magnet 222, and an avoidance gap for avoiding the bracket 323 is provided between two adjacent side magnets 223, which is not limited here.

[0100] In one embodiment, the side magnet parts 223 include a plurality of side magnet parts 223 , which are arranged around the central magnet part 222 , and a gap is formed between two adjacent side magnet parts 223 , and some brackets 323 are arranged corresponding to the gap.

[0101] In this embodiment, two adjacent side magnetic portions 223 are spaced apart to form an escape gap, which connects the first magnetic gap 221 and the second magnetic gap 231 . The escape gap can be used to escape and install the bracket 323 , which is not limited here.

[0102] Optionally, the side magnetic portions 223 include two side magnetic portions 223 , which are respectively arranged corresponding to the two long axis sides of the central magnetic portion 222 , that is, each side magnetic portion 223 is located outside a long axis side of the central magnetic portion 222 , and is spaced from the central magnetic portion 222 to form a first magnetic gap 221 .

[0103] In one embodiment, the central magnetic portion 222 is arranged in a square shape, and the side magnetic portions 223 include a plurality of side magnetic portions, and the plurality of side magnetic portions 223 are arranged corresponding to the long axis sides of the central magnetic portion 222. Of course, in other embodiments, the side magnetic conductive plate 2232 is arranged in a ring shape, and the side magnet 2231 includes two, and the two side magnets 2231 are arranged corresponding to the long axis sides of the central magnet 2221, and the side magnetic conductive plate 2232 covers the two side magnets 2231 at the same time, further improving the magnetic flux of the first magnetic gap 221 corresponding to the short axis side of the central magnet 2221, and improving the performance of the magnetic circuit system 2.

[0104] In one embodiment, if Figures 3 to 7 As shown, the edge magnet part 223 includes a stacked edge magnet 2231 and an edge magnetic conductive plate 2232, the edge magnet 2231 is connected to the center yoke plate 211, and the edge magnet 2231 includes two, each edge magnet 2231 is arranged corresponding to a long axis side. It can be understood that the edge magnetic conductive plate 2232 of the edge magnet part 223 can optionally be an integral closed ring structure, and the two edge magnets 2231 are respectively connected to the two long sides of the edge magnetic conductive plate 2232, that is, each edge magnet 2231 is sandwiched between the center yoke plate 211 and a long side of the edge magnetic conductive plate 2232, which is not limited here.

[0105] In order to achieve driving of the first voice coil 312 by the first magnetic assembly 22 , in one embodiment, the magnetization direction of the center magnet 2221 is opposite to the magnetization direction of the side magnet 2231 .

[0106] Optionally, the thickness of the center magnet 2221 is greater than the thickness of the side magnet 2231. In this way, the magnetic field strength of the first magnetic component 22 can be ensured. In this embodiment, the center yoke plate 211 is concavely provided with a groove corresponding to the center magnet 2221, and the center magnet 2221 is limited in the groove. It can be understood that in this way, the groove can be used to achieve limited installation of the center magnet 2221, and it can be ensured that the surface of the center magnetic part 222 facing away from the center yoke plate 211 and the surface of the side magnetic part 223 facing away from the center yoke plate 211 are roughly located in the same plane, thereby ensuring the size of the first vibration space 224.

[0107] In one embodiment, the second magnetic component 23 includes a first magnet 232, an outer magnetic conductive plate 233 and a second magnet 234 which are stacked. The first magnet 232 is connected to the side yoke plate 212. The magnetization directions of the first magnet 232 and the second magnet 234 are opposite. The magnetization direction of the first magnet 232 is opposite to that of the side magnet 2231.

[0108] In this embodiment, if Figures 1 to 8As shown, the second magnetic assembly 23 is configured as a stacked first magnet 232, an outer magnetic plate 233 and a second magnet 234, and the stacked first magnet 232, the outer magnetic plate 233 and the second magnet 234 are located on the outside of the connecting plate 213 and spaced from the connecting plate 213 to form a second magnetic gap 231. It can be understood that along the first direction, the surface of the second magnet 234 facing away from the outer magnetic plate 233 is lower than the surface of the center yoke plate 211 facing away from the first magnetic assembly 22, so that there is a height difference between the surface of the second magnet 234 facing away from the outer magnetic plate 233 and the surface of the center yoke plate 211 facing away from the first magnetic assembly 22, so as to form a second vibration space 235.

[0109] It can be understood that the second magnetic component 23 is arranged on the outside of the connecting plate 213, and is spaced apart from the connecting plate 213 to form a second magnetic gap 231. The second magnetic component 23 can be optionally arranged in a ring shape. Optionally, the first magnet 232 and / or the outer magnetic conductive plate 233 and / or the second magnet 234 form a closed integral annular structure. Alternatively, the outer magnetic conductive plate 233 forms a closed integral annular structure, and the first magnet 232 and / or the second magnet 234 are arranged in plurality, so that an air leakage channel connected to the second magnetic gap 231 can be formed between adjacent first magnets 232 and / or between adjacent second magnets 234, and then can be connected to the outer shell of the sound unit 100 or the air leakage hole of the yoke 21, so as to balance the internal and external air pressure of the sound unit 100.

[0110] Of course, in other embodiments, the second magnetic assembly 23 includes a plurality of second magnetic assemblies 23 , and the plurality of second magnetic assemblies 23 are disposed around the outer side of the connecting plate 213 and are spaced apart from and enclosed with the connecting plate 213 to form a second magnetic gap 231 .

[0111] In order to increase the magnetic flux of the second magnetic assembly 23 and improve the driving force of the second magnetic assembly 23 on the second voice coil 322, in one embodiment, the magnetization directions of the first magnet 232 and the second magnet 234 are opposite. It can be understood that in order to further increase the magnetic flux passing through the second voice coil 322 and improve the driving force on the second voice coil 322, in one embodiment, as Figure 5 As shown, the magnetization direction of the first magnet 232 is opposite to the magnetization direction of the side magnet 2231. Fig.14 As shown, by setting the magnetic poles of the first magnet 232 and the second magnet 234 facing one end of the outer magnetic conductive plate 233 and the polarity of the side magnet 2231 facing the center yoke plate 211 to be opposite, the magnetic lines of force passing through the outer magnetic conductive plate 233 are attracted by the end of the side magnet 2231 facing the center yoke plate 211 and enter the center yoke plate 211, so that the magnetic lines of force passing through the second magnetic gap 231 converge toward the center yoke plate 211, reducing the dispersion toward the connecting plate 213, allowing more magnetic lines of force to pass through the second voice coil 322, thereby improving the driving force.

[0112] It should be noted that if Fig.15 As shown, in a pair of proportions, when the magnetizing direction of the first magnet 232 is set to be the same as the magnetizing direction of the side magnet 2231, the magnetic lines of force are dispersed toward the side wall of the yoke 21 (that is, the connecting plate 213), resulting in a reduction in the magnetic lines of force passing through the second voice coil 322, thereby affecting the driving force of the magnetic circuit system 2 on the second voice coil 322, resulting in a reduction in the acoustic performance of the sound unit 100.

[0113] In one embodiment, the first diaphragm 311 includes a first central portion 3111, a first folded ring portion 3112 surrounding the first central portion 3111, and a first fixed portion 3113 connected to the outer side of the first folded ring portion 3112, the first fixed portion 3113 is connected to the side yoke plate 212, the first voice coil 312 is connected to the first central portion 3111, the first folded ring portion 3112 protrudes toward the first vibration space 224, and at least a portion of the first folded ring portion 3112 is located in the first vibration space 224.

[0114] In this embodiment, if Figures 2 to 7 As shown, the first diaphragm 311 is installed and fixed by connecting the periphery of the first diaphragm 311 to the side yoke plate 212 of the magnetic yoke 21, that is, the first fixing portion 3113 of the first diaphragm 311 is connected to the side yoke plate 212. The first voice coil 312 is connected to the first central portion 3111, so that the first voice coil 312 and the first magnetic gap 221 are arranged correspondingly.

[0115] It should be noted that in order to increase the connection stability and increase the effective vibration area of ​​the first diaphragm 311, the outer side of the first fixed portion 3113 can extend toward the side away from the first folding ring portion 3112, and bend and extend toward the vibration direction of the first diaphragm 311 to form a bending portion, that is, the first fixed portion 3113 and the bending portion can be optionally arranged in an L-shape; or, the outer side of the first fixed portion 3113 can be directly bent and extended toward the vibration direction of the first diaphragm 311, which is not limited here.

[0116] Optionally, the first diaphragm 311 is an integrally formed structure. In this embodiment, the first central portion 3111, the first folding ring portion 3112 and the first fixing portion 3113 are an integrally formed structure, which can improve the structural strength of the first diaphragm 311.

[0117] In order to further improve the structural strength and stability of the first diaphragm 311 , in one embodiment, the first diaphragm 311 further includes a first vibration plate disposed at the first central portion 3111 , and one end of the first voice coil 312 is connected to the first vibration plate or the first central portion 3111 .

[0118] In this embodiment, if Figures 2 to 7As shown, by arranging a first vibration plate on the first diaphragm 311, the first vibration plate is used to improve the structural strength of the first diaphragm 311, thereby improving the acoustic performance of the sound-emitting unit 100. Optionally, the first vibration plate is connected to the side of the first central portion 3111 facing the first voice coil 312, that is, one end of the first voice coil 312 is connected to the first vibration plate. Of course, in other embodiments, the first vibration plate is connected to the side of the first central portion 3111 facing away from the first voice coil 312, and at this time, one end of the first voice coil 312 is connected to the first central portion 3111, which is not limited here.

[0119] It can be understood that in order to reduce the weight of the first diaphragm 311 and improve the compliance of the first diaphragm 311, the first central portion 3111 is provided with a first hollow hole, and the first vibration plate is connected to the first central portion 3111 and covers the first hollow hole, which is not limited here.

[0120] Optionally, the first folding ring portion 3112 of the first diaphragm 311 may be a convex structure protruding upward or a concave structure concave downward. In order to further reduce the height of the sound-emitting unit 100 in the Z direction, in this embodiment, the first folding ring portion 3112 protrudes toward the first vibration space 224, and at least part of the first folding ring portion 3112 is located in the first vibration space 224. That is, the first folding ring portion 3112 may optionally protrude downward.

[0121] In one embodiment, the second diaphragm 321 includes a second central portion 3211, a second folded ring portion 3212 surrounding the second central portion 3211, and a second fixed portion 3213 connected to the outer side of the second folded ring portion 3212, the second fixed portion 3213 is connected to the second magnetic component 23, the second folded ring portion 3212 protrudes toward the second vibration space 235, and at least a portion of the second folded ring portion 3212 is located in the second vibration space 235.

[0122] In this embodiment, if Figure 1 , Figures 3 to 7 As shown, by setting the second diaphragm 321 as a single folded ring structure, that is, the second diaphragm 321 includes a second central portion 3211, a second folded ring portion 3212 and a second fixed portion 3213 connected in sequence, the second diaphragm 321 is supported and fixed to the second magnetic component 23 by the second fixed portion 3213, thereby achieving installation and fixation.

[0123] It can be understood that the second diaphragm 321 is an integrally formed structure. Optionally, the second central portion 3211, the second folding ring portion 3212 and the second fixing portion 3213 are an integrally formed structure, which can improve the vibration performance and structural strength of the second diaphragm 321. In this embodiment, the second voice coil 322 is connected to the second central portion 3211 through the bracket 323.

[0124] In this embodiment, if Figure 4 and Figure 5 As shown, along the first direction, the projection of the second voice coil 322 on the horizontal plane is located outside the projection of the second folding ring portion 3212 on the horizontal plane. Optionally, the first folding ring portion 3112 of the first diaphragm 311 and the second folding ring portion 3212 of the second diaphragm 321 are coaxially arranged.

[0125] In order to further improve the structural strength and stability of the second diaphragm 321 , in one embodiment, the second diaphragm 321 further includes a second vibration plate disposed at the second central portion 3211 , and the second voice coil 322 is connected to the second vibration plate or the second central portion 3211 via a bracket 323 .

[0126] In this embodiment, if Figure 1 , Figures 3 to 7 As shown, by arranging a second vibration plate on the second diaphragm 321, the second vibration plate is used to improve the structural strength of the second diaphragm 321, thereby improving the acoustic performance of the sound-emitting unit 100. Optionally, the second vibration plate is connected to the side of the second central portion 3211 facing the second voice coil 322, that is, the second voice coil 322 is connected to the second vibration plate through the bracket 323. Of course, in other embodiments, the second vibration plate is connected to the side of the second central portion 3211 facing away from the second voice coil 312, and the second voice coil 322 is connected to the second central portion 3211 through the bracket 323, which is not limited here.

[0127] It can be understood that in order to reduce the weight of the second diaphragm 321 and improve the compliance of the second diaphragm 321, the second central portion 3211 is provided with a second hollow hole, and the second vibration plate is connected to the second central portion 3211 and covers the second hollow hole, which is not limited here.

[0128] Optionally, the second folding ring portion 3212 of the second diaphragm 321 may be a convex structure protruding upward or a concave structure concave downward. In order to further reduce the height of the sound-emitting unit 100 in the Z direction, in this embodiment, the second folding ring portion 3212 protrudes toward the second vibration space 235, and at least part of the second folding ring portion 3212 is located in the second vibration space 235. That is, the second folding ring portion 3212 may optionally protrude upward.

[0129] In one embodiment, the first diaphragm 311 is provided with a first conductive layer 3114, and the lead of the first voice coil 312 is electrically connected to the first conductive layer 3114; the sound unit 100 also includes a flexible circuit board 313 connected to the first diaphragm 311, and the flexible circuit board 313 is electrically connected to the first conductive layer 3114 and the external circuit.

[0130] In this embodiment, if Fig.11As shown, by setting a first conductive layer 3114 on the first diaphragm 311, it is convenient to use the first conductive layer 3114 to electrically connect the lead of the first voice coil 312, and by setting a flexible circuit board 313, the first conductive layer 3114 and the external circuit are connected and conducted by using the flexible circuit board 313, so that the first voice coil 312 can be connected and conducted with the external circuit, and the suspended setting of the lead of the first voice coil 312 can be avoided, so that the external circuit is introduced into the first voice coil 312 through the flexible circuit board 313, so as to realize the connection between the first voice coil 312 and the external circuit from the first conductive layer 3114 on the first diaphragm 311, thereby simplifying the routing method of the lead of the first voice coil 312, effectively improving the connection stability of the lead of the first voice coil 312, and avoiding the risk of the lead of the first voice coil 312 being broken.

[0131] It is understandable that the first conductive layer 3114 can be disposed on the first diaphragm 311 by bonding or spraying. Optionally, the first conductive layer 3114 is coated on the side of the first diaphragm 311 facing the magnetic circuit system 2, for example, by curing the coating structure after coating, which is not limited here.

[0132] Optionally, the first conductive layer 3114 is made of a conductive material. Of course, the first conductive layer 3114 can also be formed by doping or mixing or setting a conductive material in the substrate, which is not limited here. In this embodiment, the substrate of the first conductive layer 3114 can be made of epoxy resin, polyurethane, silicone, acrylate and other materials, and the conductive material can be a conductive silver material, etc., which is not limited here.

[0133] In this embodiment, if Fig.11 As shown, the first conductive layer 3114 includes a first input conductive layer and a first output conductive layer, wherein the first input conductive layer is electrically connected to the input lead of the first voice coil 312 , and the first output conductive layer is electrically connected to the output lead of the first voice coil 312 .

[0134] It can be understood that the leads of the first voice coil 312 include input leads and output leads. By setting the first conductive layer 3114 as the first input conductive layer and the first output conductive layer, the first input conductive layer is electrically connected to the input lead of the first voice coil 312 to ensure that the first input conductive layer can introduce an external circuit into the first voice coil 312, and the first output conductive layer is electrically connected to the output lead of the first voice coil 312 to ensure that the first output conductive layer will introduce the current passing through the first voice coil 312 into the external circuit, so as to realize the current flowing in and out of the first voice coil 312.

[0135] In one embodiment, the flexible circuit board 313 includes a main body portion 3131 and an extension portion 3132 formed by extending outward from the main body portion 3131, the main body portion 3131 is provided with an inner solder pad 3133, the inner solder pad 3133 is electrically connected to the first conductive layer 3114, and the extension portion 3132 is provided with an outer solder pad 3134 at one end away from the main body portion 3131, and the outer solder pad 3134 is electrically connected to an external circuit.

[0136] In this embodiment, if Figure 2 , Figure 3 , Fig.12 As shown, by configuring the flexible circuit board 313 to include a main body 3131 and an extension 3132, the flexible circuit board 313 is sandwiched between the first diaphragm 311 and the side yoke plate 212, that is, the main body 3131 of the flexible circuit board 313 is sandwiched between the first diaphragm 311 and the side yoke plate 212, thereby achieving installation and fixation of the flexible circuit board 313, and facilitating electrical connection between the inner pad 3133 of the main body 3131 and the first conductive layer 3114 of the first diaphragm 311. Optionally, the main body 3131 of the flexible circuit board 313 is arranged in a ring shape.

[0137] It can be understood that an extension portion 3132 is formed by extending outward from the main body portion 3131, and an external pad 3134 is provided at one end of the extension portion 3132 away from the main body portion 3131. The external pad 3134 is electrically connected to an external circuit. In this way, the current of the external circuit is introduced into the first conductive layer 3114 of the first diaphragm 311 through the flexible circuit board 313, and then introduced into the first voice coil 312 through the first conductive layer 3114, and then introduced into the external circuit from the first voice coil 312, thereby realizing a current loop.

[0138] Optionally, the first input conductive layer and the first output conductive layer of the first conductive layer 3114 are both coated on a side of the first diaphragm 311 facing the magnetic circuit system 2 .

[0139] Optionally, the first diaphragm 311 is arranged in a square shape, and the first conductive layer 3114 can be arranged at the corner portion of the first diaphragm 311. Of course, the first conductive layer 3114 can also be arranged at the long axis side or short axis side of the first diaphragm 311, etc., which is not limited here. It can be understood that the first conductive layer 3114 has excellent compliance and will not affect the compliance of the first diaphragm 311. The first voice coil 312 is fixed to the first conductive layer 3114 by a bonding process to achieve electrical connectivity.

[0140] In one embodiment, the first diaphragm 311 includes a first central portion 3111 , a first folded portion 3112 surrounding the first central portion 3111 , and a first fixed portion 3113 connected to the outer side of the first folded portion 3112 , and the first conductive layer 3114 extends from the first central portion 3111 to the first fixed portion 3113 .

[0141] In this embodiment, if Fig.11 As shown, by extending the first input conductive layer and the first output conductive layer of the first conductive layer 3114 from the first central portion 3111 of the first diaphragm 311 to the first fixing portion 3113 , it is ensured that the first conductive layer 3114 connects the first voice coil 312 to the external circuit.

[0142] In one embodiment, the second diaphragm 321 is provided with a second conductive layer 3215 , and the second vibration component 32 also includes a bracket 323 , the bracket 323 has a conductive path, and the bracket 323 is provided with a first soldering pad and a second soldering pad, the first soldering pad is electrically connected to the lead of the second voice coil 322 , and the second soldering pad is electrically connected to the second conductive layer 3215 .

[0143] In this embodiment, if Fig.13 As shown, by setting the second conductive layer 3215 on the second diaphragm 321, it is convenient to use the second conductive layer 3215 to electrically connect with the lead of the second voice coil 322 through the bracket 323, and by setting the bracket 323 and setting a conductive path on the bracket 323, the first conductive layer 3114 and the lead of the second voice coil 322 are connected and conducted by using the bracket 323, so that the second voice coil 322 can be connected and conducted with the external circuit, and the suspended setting of the lead of the second voice coil 322 can be avoided, so that the external circuit is introduced into the second voice coil 322 through the bracket 323, so as to realize the connection between the second voice coil 322 and the external circuit from the second conductive layer 3215 on the second diaphragm 321, thereby simplifying the routing method of the lead of the second voice coil 322, effectively improving the connection stability of the lead of the second voice coil 322, and avoiding the risk of the lead of the second voice coil 322 being broken.

[0144] It is understandable that the second conductive layer 3215 can be disposed on the second diaphragm 321 by bonding or spraying. Optionally, the second conductive layer 3215 is coated on the side of the second conductive layer 3215 facing the second vibration space 235, for example, by curing the coating structure in a coating manner, which is not limited here.

[0145] Optionally, the second conductive layer 3215 is made of a conductive material. Of course, the second conductive layer 3215 can also be formed by doping or mixing or setting a conductive material in the substrate, which is not limited here. In this embodiment, the substrate of the second conductive layer 3215 can be made of epoxy resin, polyurethane, silicone, acrylate and other materials, and the conductive material can be a conductive silver material, etc., which is not limited here.

[0146] In this embodiment, if Fig.10 and Fig.13As shown, the second conductive layer 3215 includes a second input conductive layer and a second output conductive layer, wherein the second input conductive layer is electrically connected to the input lead of the second voice coil 322 through the bracket 323 , and the second output conductive layer is electrically connected to the output lead of the second voice coil 322 through the bracket 323 .

[0147] It can be understood that the leads of the second voice coil 322 include input leads and output leads. By setting the second conductive layer 3215 as the second input conductive layer and the second output conductive layer, the second input conductive layer is electrically connected to the input lead of the second voice coil 322 through the bracket 323, so as to ensure that the second input conductive layer can introduce an external circuit into the second voice coil 322, and the second output conductive layer is electrically connected to the output lead of the second voice coil 322 through the bracket 323, so as to ensure that the second output conductive layer can introduce the current passing through the second voice coil 312 into the external circuit, so as to realize the current flowing in and out of the second voice coil 312.

[0148] In this embodiment, the bracket 323 can be made of metal material; or the bracket 323 can also be formed by injection molding a metal part into a plastic part, which is not limited here. It can be understood that a conductive path is provided in the bracket 323, and a first pad and a second pad are provided on the bracket 323, and the first pad of the bracket 323 is electrically connected to the lead of the second voice coil 322, and the second pad of the bracket 323 is electrically connected to the second conductive layer 3215.

[0149] It should be noted that the bracket 323 includes two first and second pads, the two first pads are electrically connected to the input lead and output lead of the second voice coil 322 respectively, and the two second pads are electrically connected to the second input conductive layer and the second output conductive layer of the second conductive layer 3215 respectively.

[0150] In one embodiment, the sound unit 100 also includes an external terminal 4, which is connected to the second magnetic component 23 and electrically connected to the external circuit. The second diaphragm 321 includes a second central portion 3211, a second folded ring portion 3212 surrounding the second central portion 3211, and a second fixed portion 3213 connected to the outer side of the second folded ring portion 3212. The second fixed portion 3213 extends toward the external terminal 4 to form a protrusion 3214. The second conductive layer 3215 extends from the second central portion 3211 to the protrusion 3214, and the protrusion 3214 is connected to the external terminal 4 so that the second conductive layer 3215 is electrically connected to the external terminal 4.

[0151] In this embodiment, if Figures 1 to 4 , Figure 7 and Figure 8As shown, by setting an external terminal 4, the external terminal 4 is connected to the second magnetic component 23 to achieve installation and fixation. In this way, the second conductive layer 3215 of the second diaphragm 321 can be electrically connected to the external terminal 4, and the external terminal 4 can be electrically connected to the external circuit to introduce the external current into the second voice coil 322 through the external terminal 4, the second conductive layer 3215 and the bracket 323, and realize the current loop.

[0152] It can be understood that the external terminal 4 is provided with an internal pad and an external pad, the internal pad is electrically connected to the second conductive layer 3215, and the external pad is used to be electrically connected to an external circuit. Optionally, the second input conductive layer and the second output conductive layer of the second conductive layer 3215 are both coated on the side of the second diaphragm 321 facing the second vibration space 235.

[0153] Optionally, the second diaphragm 321 is arranged in a square shape, and the second conductive layer 3215 can be arranged at the corner portion of the second diaphragm 321. Of course, the second conductive layer 3215 can also be arranged at the long axis side or short axis side of the second diaphragm 321, etc., which is not limited here. It can be understood that the second conductive layer 3215 has excellent compliance and will not affect the compliance of the second diaphragm 321. The second voice coil 322 is fixed to the bracket 323 by a bonding process to achieve electrical connection.

[0154] In this embodiment, if Fig.13 As shown, by extending the second input conductive layer and the second output conductive layer of the second conductive layer 3215 from the second central portion 3211 of the second diaphragm 321 to the protruding portion 3214, it is ensured that the second conductive layer 3215 connects the second voice coil 322 to the external circuit. It can be understood that the protruding portion 3214 of the second diaphragm 321 is formed by the second fixing portion 3213 extending toward the external terminal 4, that is, the second fixing portion 3213 extends outward in a direction away from the second folding ring portion 3212, which is not limited here.

[0155] In one embodiment, the extension portion 3132 of the flexible circuit board 313 is formed by extending the main body portion 3131 toward the external terminal 4, and the extension portion 3132 is connected to the external terminal 4. It can be understood that by arranging the extension portion 3132 of the flexible circuit board 313 at the external terminal 4, the external pad 3134 of the extension portion 3132 and the external pad of the external terminal 4 are in the same plane, thereby facilitating connection with an external circuit and simplifying the structural setting.

[0156] In this embodiment, if Figure 2 , Figure 7 , Fig. 9As shown, the side yoke plate 212 of the yoke 21 is provided with a limiting groove corresponding to the extension part 3132, and at least part of the extension part 3132 is contained and limited in the limiting groove. It can be understood that the limiting groove is used to limit the installation of the extension part 3132 and guide the installation of the extension part 3132.

[0157] In one embodiment, if Figures 1 to 6 As shown, the sound unit 100 also includes a housing 1, which is connected to the second magnetic assembly 23 and the second diaphragm 321. It can be understood that by setting the housing 1, the housing 1 is connected to the second magnetic assembly 23 and the second diaphragm 321, thereby further improving the installation stability of the second vibration assembly 32.

[0158] Optionally, at least part of the periphery of the second diaphragm 321 is sandwiched between the housing 1 and the second magnetic assembly 23. In this embodiment, at least part of the second fixing portion 3213 of the second diaphragm 321 is sandwiched between the housing 1 and the second magnetic assembly 23 to further improve the connection stability and sealing of the second diaphragm 321.

[0159] In order to facilitate the second diaphragm 321 to smoothly produce sound when the sound-emitting unit 100 is working, in one embodiment, the housing 1 is provided with a sound outlet hole 11 corresponding to the second diaphragm 321. It can be understood that the sound outlet hole 11 is set through the housing 1 and is set corresponding to the second diaphragm 321, so that the sound waves generated by the vibration of the second diaphragm 321 can be smoothly radiated outward from the sound outlet hole 11.

[0160] In one embodiment, the second magnetic assembly 23 is further provided with an air leakage channel 236 connected to the second magnetic gap 231 , and the magnetic yoke 21 and / or the housing 1 are provided with an air leakage hole 216 , and the air leakage hole 216 is connected to the air leakage channel 236 .

[0161] In this embodiment, if Figure 2 , Figure 6 , Figure 8 and Fig. 9 As shown, by providing an air leakage channel 236 on the second magnetic component 23 and providing an air leakage hole 216 on the yoke 21 and / or the outer shell 1, the air leakage hole 216 is connected to the air leakage channel 236. In this way, when the sound unit 100 is working, the air flow in the first vibration space 224 and the second vibration space 235 can smoothly flow through the air leakage channel 236 and the air leakage hole 216 and the external air, thereby ensuring the air pressure balance in the sound unit 100.

[0162] It is understandable that in order to prevent dust or debris from entering the interior of the sound-emitting unit 100 through the air leakage hole 216 and affecting the performance of the sound-emitting unit 100. In one embodiment, the sound-emitting unit 100 further includes a mesh cloth, and the mesh cloth covers the air leakage hole 216.

[0163] Optionally, the air leakage hole 216 includes a plurality of air leakage holes 216, and the plurality of air leakage holes 216 are arranged at intervals. In the present embodiment, the plurality of air leakage holes 216 are arranged at the four corners of the yoke 21 and / or the outer shell 1, which is not limited here. It can be understood that the mesh cloth can be a breathable isolation member, that is, the mesh cloth can realize the passage of airflow, but can block the passage of water vapor or debris. Optionally, the mesh cloth can be a metal mesh cloth, etc., which is not limited here. Of course, in other embodiments, the mesh cloth 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.

[0164] In one embodiment, the magnetic yoke 21 also includes a first bending portion 214 formed by bending and extending one end of at least a portion of the side yoke plate 212 away from the connecting plate 213 toward the second magnetic component 23. The first bending portion 214 includes a plurality of first notches 217 are provided between adjacent first bending portions 214, at least a portion of the second magnetic component 23 is exposed in the first notch 217, and the first bending portion 214 is in contact with the outer shell 1.

[0165] In this embodiment, if Figures 1 to 3 , Figure 7 , Fig. 9 As shown, by setting a first bent portion 214 on the outer periphery of the yoke 21, that is, the first bent portion 214 is formed by bending and extending at least part of the side yoke plate 212 away from the end of the connecting plate 213 toward the second magnetic component 23, so as to further connect with the second magnetic component 23 by using the first bent portion 214 to improve the connection stability. At the same time, the first bent portion 214 of the yoke 21 is used to abut against the housing 1, so as to realize the housing 1 and the yoke 21 to cooperate with each other to install and position the second magnetic component 23.

[0166] Optionally, the first bending portion 214 includes a plurality of first notches 217, and first notches 217 are provided between adjacent first bending portions 214, and at least a portion of the second magnetic assembly 23 is exposed in the first notches 217. It can be understood that such a configuration can utilize the first notches 217 between adjacent first bending portions 214 and the portion of the second magnetic assembly 23 exposed in the first notches 217 to achieve positioning installation, further improving installation stability.

[0167] In this embodiment, the side yoke plate 212 of the yoke 21 may be optionally arranged in a square shape, and the plurality of first bent portions 214 may be arranged at two long axis sides or two short axis sides of the yoke 21. Of course, the plurality of first bent portions 214 may also be arranged at the four corners of the yoke 21, which is not limited here.

[0168] In one embodiment, the shell 1 also includes a second bending portion 12 that is bent and extended toward the second magnetic component 23. The second bending portion 12 includes multiple second bending portions 12, and a second notch 13 is provided between adjacent second bending portions 12. At least part of the second magnetic component 23 is exposed in the second notch 13, and the second bending portion 12 abuts against the yoke 21.

[0169] In this embodiment, if Figures 1 to 3 As shown, by providing a second bending portion 12 on the outer periphery of the housing 1, that is, the second bending portion 12 is formed by bending and extending from the outer periphery of the housing 1 toward the second magnetic component 23, the second bending portion 12 is further used to connect with the second magnetic component 23 to improve the connection stability. At the same time, the second bending portion 12 of the housing 1 is used to abut against the yoke 21 to achieve the housing 1 and the yoke 21 to cooperate and install the second magnetic component 23.

[0170] Optionally, the second bending portion 12 includes a plurality of second notches 13, and second notches 13 are provided between adjacent second bending portions 12, and at least a portion of the second magnetic assembly 23 is exposed in the second notches 13. It can be understood that such a configuration can utilize the second notches 13 between adjacent second bending portions 12 and the portion of the second magnetic assembly 23 exposed in the second notches 13 to achieve positioning installation, further improving installation stability.

[0171] In this embodiment, the housing 1 may be optionally arranged in a square shape, and the plurality of second bent portions 12 may be arranged at two long axis sides or two short axis sides of the housing 1. Of course, the plurality of second bent portions 12 may also be arranged at the four corners of the housing 1, which is not limited here. Optionally, the second bent portion 12 of the housing 1 abuts against the first bent portion 214 of the yoke 21 to limit the position.

[0172] like Fig.16 As shown, the utility model further proposes a sound module 600, which includes a module shell 500 and the above-mentioned sound unit 100. The specific structure of the sound unit 100 refers to the aforementioned embodiment. Since the sound module 600 adopts all the technical solutions of all the aforementioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the aforementioned embodiments, which will not be described one by one here.

[0173] In one embodiment, the sound unit 100 is disposed in a module shell 500, and the module shell 500 is provided with a first sound outlet 510 for the first vibration component 31 of the sound unit 100 to radiate sound waves outwardly and a second sound outlet 520 for the second vibration component 32 of the sound unit 100 to radiate sound waves outwardly, and the first sound outlet 510 and the second sound outlet 520 are isolated from each other.

[0174] In this embodiment, if Fig.16 As shown, the module housing 500 is provided with an installation space 530, and the sound unit 100 is provided in the installation space 530. It can be understood that in order to facilitate the outward radiation of the sound generated by the sound unit 100, the module housing 500 is also provided with a first sound outlet 510 and a second sound outlet 520 connected to the installation space 530.

[0175] It can be understood that the first sound outlet 510 is used for the first vibration component 31 of the sound-emitting unit 100 to radiate sound waves outward, and the second sound outlet 520 is used for the second vibration component 32 of the sound-emitting unit 100 to radiate sound waves outward. In this embodiment, the first sound outlet 510 and the second sound outlet 520 are optionally located on two adjacent surfaces of the module housing 500. In this way, the sound module 600 is applied to electronic devices to achieve different sound effects.

[0176] In one embodiment, the sound module 600 has a first sound mode, and in the first sound mode, the first vibration component 31 and the second vibration component 32 radiate sound waves of opposite phases outwardly. It can be understood that when the sound module 600 is working, the sound module 600 has a first sound mode in which the first vibration component 31 and the second vibration component 32 of the sound unit 100 simultaneously radiate sound waves of opposite phases outwardly, so that the sound waves with opposite phases generated by the first vibration component 31 and the second vibration component 32 can cancel each other in the far field to achieve a noise reduction effect, which can improve the call privacy of the terminal device.

[0177] In one embodiment, the sound module 600 also has a second sound mode, and in the second sound mode, the first vibration component 31 and the second vibration component 32 radiate sound waves of the same phase outward. It can be understood that when the sound module 600 is working, the sound module 600 has a second sound mode in which the first vibration component 31 and the second vibration component 32 of the sound unit 100 simultaneously radiate sound waves of the same phase outward.

[0178] In this embodiment, the sound module 600 has two sound modes, that is, the sound module 600 has a first sound mode and a second sound mode. In the first sound mode, the first vibration component 31 and the second vibration component 32 radiate sound waves of opposite phases outwardly; in the first sound mode, 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 module 600 is applied to electronic devices. When the electronic device is in the handset mode, the sound module 600 is in the first sound mode, which can achieve a quiet call without sound leakage; when the electronic device is in the external speaker mode, the sound module 600 is in the second sound mode, thereby improving the external speaker effect of the electronic device.

[0179] It should be noted that when the sound module 600 is in the first sound mode, the first vibration component 31 and the second vibration component 32 are used to radiate sound waves of opposite phases to form 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. When the sound module 600 is in the second sound mode, the first vibration component 31 and the second vibration component 32 are used to radiate sound waves of the same phase to increase the sound effect, so that the electronic device can achieve an external speaker mode with a higher volume and better sound effect.

[0180] In one embodiment, the module shell 500 includes a middle shell 501 and an upper cover 502. The middle shell 501 is provided with an installation space 530 and a first opening and a second opening connected to the installation space 530. The first opening and the second opening are arranged opposite to each other. The sound unit 100 is arranged at the second opening. The first vibration component 31 corresponds to the first opening, and the second vibration component 32 corresponds to the second opening. The first sound outlet 510 is arranged on the side wall of the middle shell 501, and the second sound outlet 520 is formed on the side of the middle shell 501 facing the second opening. The upper cover 502 covers the first opening. The upper cover 502 has a supporting wall. The side of the sound unit 100 facing the first vibration component 31 is connected to the supporting wall, and is enclosed with the upper cover 502 to form a first front sound cavity connected to the first sound outlet 510.

[0181] In this embodiment, if Fig.16 As shown, by setting the module shell 500 to the middle shell 501 and the upper cover 502, and setting the middle shell 501 to a cylindrical structure with openings at both ends, that is, the middle shell 501 has an installation space 530 and a first opening and a second opening connected to the installation space 530, the first opening and the second opening are arranged opposite to each other, that is, located on opposite sides of the middle shell 501, so that it is convenient to set the sound unit 100 at the second opening, so that the first vibration component 31 of the sound unit 100 corresponds to the first opening, and the second vibration component 32 corresponds to the second opening, and the first sound outlet 510 is set on the side wall of the middle shell 501, and the upper cover 502 is used to cover the first opening, so that the upper cover 502 and the first vibration component 31 of the sound unit 100 are enclosed to form a first front sound cavity connected to the first sound outlet 510. At this time, the side of the sound unit 100 facing away from the upper cover 502 cooperates with the module shell 500 to form a second sound outlet 520.

[0182] It can be understood that the upper cover 502 has a supporting wall, and the supporting wall of the upper cover 502 is connected to the side of the sound unit 100 facing the first vibration component 31. In this embodiment, the supporting wall of the upper cover 502 is connected to the first vibration component 31 and / or the side yoke plate 212, so that the upper cover 502 and the first vibration component 31 enclose a first front sound cavity connected to the first sound outlet 510.

[0183] In one embodiment, the module shell 500 also includes a lower cover, which covers the second opening and is combined with the middle shell 501 to form a second sound outlet 520. The lower cover and the side of the sound unit 100 facing the second vibration component 32 are combined to form a second front sound cavity connected to the second sound outlet 520.

[0184] In this embodiment, the second opening is covered by the lower cover, so as to protect the second vibration component 32 of the sound unit 100, so that the lower cover and the side of the sound unit 100 facing the second vibration component 32 form a second front sound cavity connected to the second sound outlet 520.

[0185] It can be understood that the middle shell 501 is provided with a mounting groove around the second opening, and the lower cover is arranged in the mounting groove, and forms a sound outlet channel connecting the second front sound cavity and the second sound outlet 520. In this embodiment, the second sound outlet 520 is not directly opposite to the second diaphragm 321 of the second vibration assembly 32. Optionally, the second sound outlet 520 is located at the periphery of the lower cover. The second sound outlet 520 is formed by the periphery of the lower cover and the side wall of the middle shell 501.

[0186] Of course, in another embodiment, the second sound outlet 520 can also be directly formed by the housing 1 of the sound unit 100, that is, the sound outlet hole 11 of the housing 1 of the sound unit 100 is the second sound outlet 520. In this embodiment, the sound unit 100 also includes a housing 1, which is connected to the second magnetic component 23 and the second vibration component 32. The housing 1 is provided with a second sound outlet 520 opposite to the second vibration component 32, which is not limited here.

[0187] It can be understood that in order to facilitate the connection between the sound unit 100 and the external circuit, the module housing 500 is also provided with a transfer terminal, and the flexible circuit board 313 and the external terminal 4 of the sound unit 100 are connected to the transfer terminal, so that the flexible circuit board 313 and the external terminal 4 are conveniently connected to the external circuit through the transfer terminal.

[0188] The utility model also provides an electronic device, which includes the above-mentioned sound module 600. The specific structure of the sound module 600 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.

[0189] 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 600 is arranged in the device housing.

[0190] In this embodiment, the electronic device further includes a device housing, and the sound module 600 is disposed in the device housing. It can be understood that the device housing is provided with a first sound outlet hole connected to the first sound outlet of the sound module 600 and a second sound outlet hole connected to the second sound outlet of the sound module 600, and the first sound outlet hole and the second sound outlet hole are arranged at intervals, so that the sounds generated by the first vibration component 31 and the second vibration component 32 of the sound module 600 are smoothly exported by using the first sound outlet hole and the second sound outlet hole respectively, and no sound wave interference is generated between each other, thereby effectively improving the sound effect.

[0191] 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 unit comprises: A magnetic circuit system, the magnetic circuit system comprising a yoke, a first magnetic assembly and a second magnetic assembly, the yoke comprising a central yoke plate, a side yoke plate and a connecting plate connecting the central yoke plate and the side yoke plate, the side yoke plate being located on the outside of the central yoke plate and not coplanar with the central yoke plate, the first magnetic assembly comprising a central magnetic portion and a side magnetic portion provided on the central yoke plate, the central magnetic portion having two long axis sides and two short axis sides connected end to end, the side magnetic portions being provided corresponding to the two long axis sides and being spaced from the central magnetic portion to form a first magnetic gap, the second magnetic assembly being provided on the side yoke plate and being spaced from the connecting plate to form a second magnetic gap; and A vibration system, the vibration system comprising a first vibration component and a second vibration component vibrating in a first direction, the first vibration component comprising a first diaphragm and a first voice coil, the first voice coil being connected to the first diaphragm and arranged corresponding to the first magnetic gap, the second vibration component comprising a second diaphragm and a second voice coil, the second voice coil being arranged corresponding to the second magnetic gap; Among them, the surface of the first magnetic component facing away from the central yoke plate is lower than the inner surface of the connecting plate facing away from the central yoke plate, and a first vibration space is formed therebetween, and the periphery of the first diaphragm is connected to the side yoke plate, and when the sound unit is working, at least part of the first diaphragm vibrates in the first vibration space; the sound unit has a first working state, and in the first working state, the first vibration component and the second vibration component radiate sound waves of opposite phases outward.

2. The sound-emitting unit according to claim 1, characterized in that: The central magnetic part includes a stacked central magnet and a central magnetic conductive plate, the central magnet is connected to the central yoke plate, the side magnetic part includes stacked side magnets and side magnetic conductive plates, the side magnets are connected to the central yoke plate, the side magnets include two side magnets, each of which is arranged corresponding to one side of the long axis, and the magnetization direction of the central magnet is opposite to that of the side magnets.

3. The sound-emitting unit according to claim 2, characterized in that: The second magnetic component includes a first magnet, an outer magnetic conductive plate and a second magnet which are stacked together. The first magnet is connected to the side yoke plate. The magnetization directions of the first magnet and the second magnet are opposite. The magnetization direction of the first magnet is opposite to that of the side magnet.

4. The sound-emitting unit according to claim 1, characterized in that: The first diaphragm includes a first central portion, a first folding ring portion surrounding the first central portion, and a first fixed portion connected to the outer side of the first folding ring portion, the first fixed portion is connected to the side yoke plate, the first voice coil is connected to the first central portion, the first folding ring portion protrudes toward the first vibration space, and at least a portion of the first folding ring portion is located in the first vibration space.

5. The sound-emitting unit according to claim 1, characterized in that: Along the first direction, the second magnetic component is used to form an inner surface of the second magnetic gap, the end of which is away from the side yoke plate and is lower than the surface of the center yoke plate facing away from the first magnetic component, and a second vibration space is formed therebetween. The periphery of the second diaphragm is connected to the second magnetic component, and when the sound unit is working, at least part of the second diaphragm vibrates in the second vibration space.

6. The sound-emitting unit according to claim 5, characterized in that: The second diaphragm includes a second central portion, a second folding portion surrounding the second central portion, and a second fixing portion connected to the outer side of the second folding portion, the second fixing portion is connected to the second magnetic assembly, the second folding portion protrudes toward the second vibration space, and at least a portion of the second folding portion is located in the second vibration space; And / or, the second vibration component also includes a bracket, the magnetic yoke is also provided with an escape space connecting the first magnetic gap and the second magnetic gap, one end of the bracket is connected to the second diaphragm, and the other end of the bracket passes through the escape space and extends into the second magnetic gap and is connected to the second voice coil; the second diaphragm is arranged in a square shape, and the bracket includes two, and the two brackets are arranged respectively corresponding to the short sides of the second diaphragm.

7. The sound-emitting unit according to claim 1, characterized in that: The first diaphragm is provided with a first conductive layer, and the lead wire of the first voice coil is electrically connected to the first conductive layer; The sound unit also includes a flexible circuit board connected to the first diaphragm, and the flexible circuit board is electrically connected to the first conductive layer and an external circuit.

8. The sound-emitting unit according to claim 7, characterized in that: The flexible circuit board is sandwiched between the first diaphragm and the side yoke plate; And / or, the flexible circuit board includes a main body and an extension portion formed by extending outward from the main body, the main body is provided with an inner pad, the inner pad is electrically connected to the first conductive layer, and the extension portion is provided with an outer pad at one end away from the main body, the outer pad is electrically connected to an external circuit; And / or, the first diaphragm includes a first central portion, a first folding portion surrounding the first central portion, and a first fixing portion connected to the outer side of the first folding portion, and the first conductive layer extends from the first central portion to the first fixing portion.

9. The sound-emitting unit according to claim 1, characterized in that: The second diaphragm is provided with a second conductive layer, and the second vibration component also includes a bracket, the bracket has a conductive path, and the bracket is provided with a first soldering pad and a second soldering pad, the first soldering pad is electrically connected to the lead of the second voice coil, and the second soldering pad is electrically connected to the second conductive layer.

10. The sound-emitting unit according to claim 9, characterized in that: The sound unit also includes an external terminal, which is connected to the second magnetic component and electrically connected to an external circuit. The second diaphragm includes a second central portion, a second folding ring portion surrounding the second central portion, and a second fixing portion connected to the outer side of the second folding ring portion. The second fixing portion extends toward the external terminal to form a protrusion. The second conductive layer extends from the second central portion to the protrusion, and the protrusion is connected to the external terminal so that the second conductive layer is electrically connected to the external terminal.

11. The sound-emitting unit according to claim 1, characterized in that: The sound unit also includes a shell, which is connected to the second magnetic component and the second diaphragm.

12. The sound-emitting unit according to claim 11, characterized in that: At least a portion of the periphery of the second diaphragm is sandwiched between the housing and the second magnetic assembly; And / or, the housing is provided with a sound outlet hole corresponding to the second diaphragm; And / or, the second magnetic assembly is further provided with an air leakage channel connected to the second magnetic gap, the magnetic yoke and / or the housing is provided with an air leakage hole, and the air leakage hole is connected to the air leakage channel; And / or, the magnetic yoke further comprises a first bent portion formed by at least a portion of the side yoke plate being bent and extended toward the second magnetic component at one end away from the connecting plate, the first bent portion comprises a plurality of first bent portions, a first notch is provided between adjacent first bent portions, at least a portion of the second magnetic component is exposed in the first notch, and the first bent portion abuts against the housing; And / or, the shell also includes a second bending portion formed by bending and extending toward the second magnetic component, the second bending portion includes a plurality of second bending portions, a second notch is provided between adjacent second bending portions, at least a portion of the second magnetic component is exposed in the second notch, and the second bending portion abuts against the magnetic yoke.

13. The sound-emitting unit according to any one of claims 1 to 12, characterized in that: The sound-emitting unit also has a second working state. In the second working state, the first vibration component and the second vibration component radiate sound waves of the same phase outwardly.

14. 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 13, the sound unit is arranged in the module shell, the module shell is provided with a first sound outlet for a first vibration component of the sound unit to radiate sound waves outwardly and a second sound outlet for a second vibration component of the sound unit to radiate sound waves outwardly, the first sound outlet and the second sound outlet are isolated from each other.

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