Sound production monomer and sound production module

Abstract

The utility model relates to the technical field of electro-acoustic conversion, and specifically relates to a sounding monomer and a sounding module. The sound production single body comprises a shell, and a magnetic circuit system and a vibration system which are accommodated in the shell, the magnetic circuit system forms at least two annular magnetic gaps which are arranged in parallel, the vibration system comprises a vibrating diaphragm assembly, a voice coil skeleton and at least two voice coils, the vibrating diaphragm assembly is connected to the shell, and the voice coil skeleton is connected to the shell. The voice coil framework is of an integrated structure and is connected to one side, close to the magnetic circuit system, of the vibrating diaphragm assembly; and one end of each voice coil is connected with the voice coil framework, and the other end of each voice coil is inserted into the magnetic gap corresponding to the voice coil in position. Through the skeleton structure, the distortion mode of the diaphragm assembly can be improved, and the sound quality effect of the sound production monomer under large amplitude can be improved.

Description

Technical Field

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

[0002] With the development of the portable consumer electronics market, miniature sound-generating devices have been widely used. And with the multifunctional and miniaturized design of portable terminal electronic products, higher requirements are placed on the vibroacoustic performance of miniature sound generators.

[0003] The sound-generating device generally includes a magnetic circuit system and a vibration system. Generally speaking, in order to improve the utilization rate of the magnetic field generated by the magnetic circuit system by the voice coil, the magnetic circuit system and the vibration system are usually optimized, so that the vibration system is formed into multiple parallel voice coils, and the multiple parallel voice coils are used to fully utilize the magnetic field generated by the magnetic circuit system, so as to improve the utilization rate of the magnetic field. However, in the above structure, since the multiple voice coils are connected to the diaphragm assembly separately, once the two voice coils are not synchronized, the diaphragm assembly will have a distortion mode, which will affect the sound quality of the sound-generating device at a large amplitude.

[0004] Therefore, in view of the above shortcomings, the present utility model is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a sound unit and a sound module to solve the problem in the prior art that the vibration component in the multi-voice coil structure has a distortion mode and thus affects the sound quality of the product.

[0006] The utility model provides a sound-generating unit in a first aspect, comprising a housing and a magnetic circuit system and a vibration system accommodated in the housing, wherein

[0007] The magnetic circuit system forms at least two magnetic gaps arranged in parallel, and the arrangement direction of the magnetic gaps is perpendicular to the vibration direction of the vibration system. The vibration system includes a diaphragm assembly, a voice coil frame and at least two voice coils. The diaphragm assembly is connected to the housing, and the voice coil frame is an integrated structure and is connected to the side of the diaphragm assembly close to the magnetic circuit system; one end of each voice coil is connected to the voice coil frame, and the other end is arranged in the magnetic gap corresponding to its position.

[0008] The sound-emitting unit provided by the utility model may also have the following additional technical features:

[0009] In a specific embodiment of the utility model, the voice coil frame includes at least two annular parts and a connecting plate connected between at least two of the annular parts, the sides of the annular parts and the connecting plate away from the voice coil are connected to the diaphragm assembly, and the voice coil is connected to the annular parts.

[0010] In a specific implementation manner of the present invention, a convex hump is formed in the middle of the connecting plate and is away from the diaphragm assembly.

[0011] In a specific embodiment of the utility model, the annular portion includes a first plate and a second plate and a third plate formed by bending two ends of the first plate, the second plate is used to connect with the diaphragm assembly, and the third plate is used to connect with the voice coil; and / or

[0012] The annular portion comprises a long axis and a short axis connected end to end, two connecting plates are connected between two adjacent annular portions, and the two connecting plates are connected to both ends of the long axis of the same annular portion.

[0013] In a specific implementation manner of the present invention, the voice coil frame is made of metal.

[0014] In a specific embodiment of the present invention, the diaphragm assembly includes:

[0015] A diaphragm, the diaphragm comprising a central portion, a first folding portion arranged around the central portion, a middle portion connected to the outer side of the first folding portion, a second folding portion arranged around the middle portion, and a fixing portion connected to the outer side of the second folding portion, the fixing portion being connected to the housing; the central portion being connected to the magnetic circuit system, and the middle portion being provided with a through hole;

[0016] A vibration plate is connected to the middle portion and closes the through hole; and the voice coil frame is connected to the vibration plate.

[0017] In a specific embodiment of the utility model, the magnetic circuit system includes a magnetic yoke and at least one common magnetic circuit part connected to the magnetic yoke, at least two central magnetic circuit parts and two side magnetic circuit parts, the two side magnetic circuit parts are respectively connected to the outer shell, at least one common magnetic circuit part and at least two central magnetic circuit parts are spaced between the two side magnetic circuit parts, and each common magnetic circuit part is spaced between two adjacent central magnetic circuit parts; the magnetic gap is formed between each central magnetic circuit part and the adjacent common magnetic circuit part and the side magnetic circuit part.

[0018] In a specific embodiment of the utility model, the common magnetic circuit portion includes a common magnet and a common washer which are stacked, and the common magnet is clamped between the common washer and the magnetic yoke;

[0019] The central magnetic circuit part includes a central magnet and a central washer which are stacked, and the central magnet is mounted between the central washer and the magnetic yoke;

[0020] The side magnetic circuit portion includes a side magnet and a side washer which are stacked, and the side magnet is sandwiched between the side washer and the magnetic yoke.

[0021] In a specific implementation manner of the utility model, the magnetic circuit portion further comprises an auxiliary magnet, and the auxiliary magnet is stacked on the common washer and connected to the central portion.

[0022] The second aspect of the utility model also provides a sound module, comprising any one of the sound units described above.

[0023] The sound-generating unit provided by the utility model has a magnetic circuit system and a vibration system arranged relatively in the shell, so that the magnetic circuit system can drive the vibration system to vibrate and generate sound. At the same time, at least two parallel and spaced annular magnetic gaps are formed in the magnetic circuit system, and at least two parallel and spaced voice coils are formed in the vibration system, and the voice coils and the magnetic gaps are arranged one by one, so that the utilization rate of the magnetic field in the magnetic circuit system can be improved, and the acoustic performance of the sound-generating unit can be improved. In addition, an integrally formed voice coil frame is arranged in the vibration system, and one side of the voice coil frame is connected to the diaphragm assembly of the vibration system, and the other side is connected to multiple voice coils, thereby improving the distortion mode of the diaphragm assembly and improving the sound quality of the sound-generating unit at a large amplitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a structural exploded view of the sound-emitting unit of the embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the voice coil bracket in the embodiment of the utility model;

[0027] Figure 3 This is a schematic structural diagram of a voice coil support in another embodiment of the present invention;

[0028] Figure 4 It is a cross-sectional view of the sound-emitting unit in the embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 100-sound unit;

[0031] 10- housing;

[0032] 20-vibration system, 21-diaphragm, 211-central part, 212-first folding ring part, 213-middle part, 214-second folding ring part, 215-fixed part, 22-vibration plate, 23-voice coil frame, 231-annular part, 232-connecting plate, 233-convex hull, 234-first plate, 235-second plate, 236-third plate, 24-voice coil, 25-centering support plate;

[0033] 30-magnetic circuit system, 31-magnetic yoke, 32-common magnetic circuit part, 321-common magnet, 322-common washer, 33-center magnetic circuit part, 331-center magnet, 332-center washer, 34-side magnetic circuit part, 341-side magnet, 342-side washer, 35-auxiliary magnet. DETAILED DESCRIPTION

[0034] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0035] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0036] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0037] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0038] The embodiment of the utility model proposes a sound unit 100. It can be understood that the sound unit 100 is applied to electronic devices, and the electronic devices can be mobile phones, speakers, computers, headphones, watches or televisions, etc., which are not limited here.

[0039] Reference Figure 1-4 The sound unit 100 provided by the embodiment of the utility model includes a shell 10 and a magnetic circuit system 30 and a vibration system 20 accommodated in the shell 10, wherein the magnetic circuit system 30 forms at least two magnetic gaps arranged in parallel, and the arrangement direction of the magnetic gaps is perpendicular to the vibration direction of the vibration system 20. The vibration system 20 includes a diaphragm 21 assembly, a voice coil frame 23 and at least two voice coils 24. The diaphragm 21 assembly is connected to the shell 10, and the voice coil frame 23 is an integrated structure and is connected to the side of the diaphragm 21 assembly close to the magnetic circuit system 30; one end of each voice coil 24 is connected to the voice coil frame 23, and the other end is arranged in the magnetic gap corresponding to its position.

[0040] In the present embodiment, the housing 10 is used to install, fix, support and protect the vibration system 20, the magnetic circuit system 30 and other components. It can be understood that the housing 10 can be a structure such as a mounting shell, a shell, a box body or a frame with a mounting cavity, that is, the housing 10 defines a receiving space, which is not limited here. Optionally, the housing 10 is a rectangular structure, and has two opposite long axis sides and two short axis sides, and the long axis sides and the short axis sides are sequentially connected to form a ring structure, so that the housing 10 defines a receiving space. Of course, in other embodiments, the housing 10 can also be set to a square or circular structure, which is not limited here.

[0041] The housing 10 has a first side surface and a second side surface that are arranged opposite to each other, wherein the magnetic circuit system 30 is connected to the first side surface, and the magnetic gap formed by the magnetic circuit system 30 faces the second side surface, the vibration system 20 is connected to the second side surface, and the voice coil 24 is inserted in the magnetic gap, so that the magnetic circuit system 30 and the vibration system 20 are arranged opposite to each other, and the vibration system 20 can vibrate and make sound under the drive of the magnetic circuit system 30.

[0042] In this embodiment, the magnetic circuit system 30 forms at least two magnetic gaps, and the at least two magnetic gaps are arranged in parallel and at intervals along the short axis direction of the shell. The corresponding vibration system 20 includes at least two voice coils 24, and the at least two voice coils 24 are arranged in parallel and at intervals along the short axis direction of the shell, and the end of each voice coil 24 close to the magnetic circuit system 30 is inserted into a corresponding magnetic gap, so that multiple voice coils 24 simultaneously drive the diaphragm 21 assembly to vibrate and make sound, thereby improving the acoustic performance of the sound unit 100.

[0043] In this embodiment, the vibration system 20 also includes a diaphragm 21 assembly and a voice coil frame 23. The outer periphery of the diaphragm 21 assembly is connected to the second side of the outer shell 10 to connect the vibration system 20 to the shell. The voice coil frame 23 is an integrated structure, and one side is connected to the side of the diaphragm 21 assembly close to the magnetic circuit system 30, and the other side is connected to multiple voice coils 24 at the same time. This can provide support for the diaphragm 21 assembly on the one hand, and balance the asynchronous vibrations of the two voice coils 24 on the other hand, thereby improving the distortion mode of the diaphragm 21 assembly and improving the sound quality of the sound unit 100 at large amplitudes.

[0044] The sound-emitting monomer 100 provided by the embodiment of the utility model is provided with a magnetic circuit system 30 and a vibration system 20 which are arranged relatively in the shell, so that the magnetic circuit system 30 can drive the vibration system 20 to vibrate and produce sound. At the same time, at least two parallel and spaced annular magnetic gaps are formed in the magnetic circuit system 30, and at least two parallel and spaced voice coils 24 are formed in the vibration system 20, and the voice coils 24 are arranged one by one with the magnetic gaps, so that the utilization rate of the magnetic field in the magnetic circuit system 30 can be improved, and the acoustic performance of the sound-emitting monomer 100 can be improved. In addition, an integrally formed voice coil frame 23 is provided in the vibration system 20, and one side of the voice coil frame 23 is connected to the diaphragm 21 component of the vibration system 20, and the other side is connected to multiple voice coils 24, so as to avoid the distortion mode of the diaphragm 21 component and improve the sound quality of the sound-emitting monomer 100 at a large amplitude.

[0045] In one embodiment, the voice coil skeleton 23 includes at least two annular portions 231 and a connecting plate 232 connected between the at least two annular portions 231 , and the sides of the annular portions 231 and the connecting plate 232 away from the voice coil 24 are connected to the diaphragm 21 assembly, and the voice coil 24 is connected to the annular portion 231 .

[0046] Specifically, the shape of the annular portion 231 is adapted to the shape of the voice coil 24, and the number of the annular portions 231 is equal to the number of the voice coils 24, so that each voice coil 24 is connected to one annular portion 231, so that the connection strength between the voice coil 24 and the voice coil frame 23 can be ensured. The connecting plate 232 is used to connect multiple annular portions 231. The connecting plate 232 not only forms the voice coil frame 23 into a whole, but also connects with the diaphragm 21 assembly to support the diaphragm 21 assembly, thereby improving the structural strength of the vibration system 20.

[0047] In one embodiment, a convex hump 233 is formed in the middle of the connecting plate 232, which is away from the diaphragm 21 assembly. By providing the convex hump 233 at the connecting plate 232, the structural strength of the connecting plate 232 can be improved, thereby further improving its support strength for the diaphragm 21 assembly and improving the structural strength of the vibration system 20.

[0048] In one embodiment, the annular portion 231 includes a first plate 234 and a second plate 235 and a third plate 236 formed by bending two ends of the first plate, the second plate 235 is used to connect with the diaphragm 21 assembly, and the third plate 236 is used to connect with the voice coil 24. The second plate 235 and the third plate 236 can improve the connection strength between the annular portion 231 and the diaphragm 21 assembly and the voice coil 24, thereby improving the reliability of the vibration system 20.

[0049] In one embodiment, the annular portion 231 includes a long axis and a short axis connected end to end, and two connecting plates 232 are connected between two adjacent annular portions 231, and the two connecting plates 232 are connected to both ends of the long axis of the same annular portion 231. The two connecting plates 232 are provided to not only further improve the structural strength of the voice coil frame 23 and improve its vibration consistency, but also provide two connecting plates 232 at the short axis ends to improve the support for the short axis of the diaphragm 21 assembly, thereby improving the reliability of the vibration system 20.

[0050] In one embodiment, the voice coil frame 23 is made of metal. Specifically, the voice coil frame can be made of aluminum or aluminum-magnesium alloy. Metal materials have good structural strength, and their use here can further improve the reliability of the voice coil frame 23.

[0051] In one embodiment, the diaphragm 21 assembly includes a diaphragm 21 and a vibration plate 22, wherein the diaphragm 21 includes a central portion 211, a first folded ring portion 212 arranged around the central portion 211, an intermediate portion 213 connected to the outer side of the first folded ring portion 212, a second folded ring portion 214 arranged around the intermediate portion 213, and a fixed portion 215 connected to the outer side of the second folded ring portion 214, and the fixed portion 215 is connected to the outer shell 10; the central portion 211 is connected to the magnetic circuit system 30, and the intermediate portion 213 is provided with a through hole; the vibration plate 22 is connected to the intermediate portion 213 and closes the through hole; the voice coil frame 23 is connected to the vibration plate 22.

[0052] Specifically, the central portion 211, the first folded ring portion 212, the middle portion 213, the second folded ring portion 214 and the fixed portion 215 of the diaphragm 21 are an integrally formed structure. The first folded ring portion 212 is arranged around the central portion 211 and is located between the central portion 211 and the middle portion 213. The first folded ring portion 212 can be a convex structure facing upward or downward, and in this embodiment, it is preferably a convex structure facing upward. The second folded ring portion 214 is arranged around the middle portion 213 and is located between the middle portion 213 and the fixed portion 215. The second folded ring portion 214 can be a convex structure facing upward or downward, and in this embodiment, it is preferably a convex structure facing downward. The diaphragm 21 is fixed without being connected to the housing 10 to improve the connection stability and sealing of the housing 10 and the diaphragm 21 assembly.

[0053] The middle portion 213 is arranged in an annular shape and is located between the first folding ring portion 212 and the second folding ring portion 214, and the middle portion 213 is also formed with through holes on both sides of the first folding ring portion 212. The vibration plate 22 is arranged in an annular shape and is connected to the side of the middle portion 213 close to the magnetic circuit system 30 and covers the through holes. Preferably, in order to improve the strength of the vibration plate 22, the vibration plate 22 is also provided with a protrusion corresponding to the through hole.

[0054] In one embodiment, the magnetic circuit system 30 includes a magnetic yoke 31 and at least one common magnetic circuit portion 32 connected to the magnetic yoke 31, at least two central magnetic circuit portions 33 and two side magnetic circuit portions 34, the two side magnetic circuit portions 34 are respectively connected to the outer shell 10, at least one common magnetic circuit portion 32 and at least two central magnetic circuit portions 33 are spaced between the two side magnetic circuit portions 34, and each common magnetic circuit portion 32 is spaced between two adjacent central magnetic circuit portions 33; a magnetic gap is formed between each central magnetic circuit portion 33 and the adjacent common magnetic circuit portions 32 and side magnetic circuit portions 34.

[0055] It can be understood that the common magnetic circuit portion 32, the central magnetic circuit portion 33 and the side magnetic circuit portion 34 of the magnetic circuit system 30 are spaced apart on the side of the magnetic yoke 31 facing the vibration system 20, and each central magnetic circuit portion 33 is spaced apart from the adjacent common magnetic circuit portion 32 and the side magnetic circuit portion 34 to form a magnetic gap.

[0056] The magnetic yoke 31 can be selected as a magnetic plate or a magnetic basin frame, which is not limited here. The magnetic yoke 31 is used to support and install the common magnetic circuit part 32, the central magnetic circuit part 33 and the side magnetic circuit part 34. The magnetic circuit system 30 is fixedly connected to the housing 10 through the side magnetic circuit part 34. Optionally, the magnetic yoke 31 is bonded to the common magnetic circuit part 32, the central magnetic circuit part 33 and the side magnetic circuit part 34, and the side magnetic circuit part 34 is bonded to the housing 10.

[0057] In one embodiment, the common magnetic circuit portion 32 includes a common magnet 321 and a common washer 322 which are stacked, and the common magnet 321 is clamped between the common washer 322 and the magnetic yoke 31. The central magnetic circuit portion 33 includes a central magnet 331 and a central washer 332 which are stacked, and the central magnet 331 is arranged between the central washer 332 and the magnetic yoke 31. The side magnetic circuit portion 34 includes a side magnet 341 and a side washer 342 which are stacked, and the side magnet 341 is clamped between the side washer 342 and the magnetic yoke 31. It should be noted that the magnetization direction of the common magnet 321 is opposite to that of the central magnet 331, and the magnetization direction of the central magnet 331 is opposite to that of the side magnet 341.

[0058] It can be understood that the side washer 342 of the side magnetic circuit portion 34 can be bonded to the housing 10. Optionally, the side washer 342 and the housing 10 are integrally formed.

[0059] The common magnet 321 and the common washer 322 have the same structural profile, the central magnet 331 and the central washer 332 have the same structural profile, and the side magnet 341 and the side washer 342 have the same structural profile. Specifically, the common magnet 321, the common washer 322, the central magnet 331, the central washer 332, the side magnet 341 and the side washer 342 can be selected as a plate-shaped, strip-shaped or racetrack-shaped structure, and are arranged in parallel along the long axis of the housing 10.

[0060] In one embodiment, the magnetic circuit portion further includes an auxiliary magnet 35, which is stacked on the common washer 322 and connected to the central portion 211. Specifically, the profile of the auxiliary magnet 35 is slightly smaller than that of the common washer 322, and a notch is formed on the side facing the vibration system 20 to avoid the first folding ring portion 212. The auxiliary magnet 35 is bonded to the common washer 322, and is bonded to the central portion 211 through the side facing the vibration system 20 to support the diaphragm 21 assembly. It should be noted that the magnetization direction of the auxiliary magnet 35 is opposite to that of the common magnet 321.

[0061] In one embodiment, the vibration system 20 further includes a centering support 25, which includes a first fixing portion 215, a second fixing portion 215, and an elastic portion connected between the first fixing portion 215 and the second fixing portion 215, wherein the first fixing portion 215 is connected to the housing 10, and the second fixing portion 215 is connected to at least two voice coils 24. Through the above arrangement, the centering support 25 can be used to balance and stabilize the vibration of the diaphragm 21 assembly driven by the multiple voice coils 24, thereby preventing the diaphragm 21 assembly driven by the multiple voice coils 24 from swinging or polarizing.

[0062] Optionally, the centering support pieces 25 include a plurality of centering support pieces 25 , and the plurality of centering support pieces 25 are symmetrically arranged. In this embodiment, the centering support pieces 25 include two, and are arranged at the short axis ends of the housing 10 .

[0063] The utility model also provides a sound module, which includes a device housing and any one of the above-mentioned sound monomers 100, and the sound monomer 100 is arranged in the device housing. The specific structure of the sound device refers to the above-mentioned embodiment. Since the sound module adopts all the technical solutions of the above-mentioned embodiment, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiment, which will not be repeated again.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A sound-emitting unit, characterized in that: It comprises a housing and a magnetic circuit system and a vibration system accommodated in the housing, wherein The magnetic circuit system forms at least two magnetic gaps arranged in parallel, and the arrangement direction of the magnetic gaps is perpendicular to the vibration direction of the vibration system. The vibration system includes a diaphragm assembly, a voice coil frame and at least two voice coils. The diaphragm assembly is connected to the housing, and the voice coil frame is an integrated structure and is connected to the side of the diaphragm assembly close to the magnetic circuit system; one end of each voice coil is connected to the voice coil frame, and the other end is arranged in the magnetic gap corresponding to its position.

2. The sound-emitting unit according to claim 1, characterized in that: The voice coil frame includes at least two annular parts and a connecting plate connected between the at least two annular parts. The sides of the annular parts and the connecting plate away from the voice coil are connected to the diaphragm assembly. The voice coil is connected to the annular parts.

3. The sound-emitting unit according to claim 2, characterized in that: A convex bump facing away from the diaphragm assembly is formed in the middle of the connecting plate.

4. The sound-emitting unit according to claim 2, characterized in that: The annular portion includes a first plate and a second plate and a third plate formed by bending two ends of the first plate, the second plate is used to connect with the diaphragm assembly, and the third plate is used to connect with the voice coil; and / or The annular portion comprises a long axis and a short axis connected end to end, two connecting plates are connected between two adjacent annular portions, and the two connecting plates are connected to both ends of the long axis of the same annular portion.

5. The sound-emitting unit according to claim 1, characterized in that: The voice coil frame is made of metal.

6. The sound-emitting unit according to claim 1, characterized in that: The diaphragm assembly comprises: A diaphragm, the diaphragm comprising a central portion, a first folding portion arranged around the central portion, a middle portion connected to the outer side of the first folding portion, a second folding portion arranged around the middle portion, and a fixing portion connected to the outer side of the second folding portion, the fixing portion being connected to the housing; the central portion being connected to the magnetic circuit system, and the middle portion being provided with a through hole; A vibration plate is connected to the middle portion and closes the through hole; and the voice coil frame is connected to the vibration plate.

7. The sound-emitting unit according to claim 6, characterized in that: The magnetic circuit system includes a magnetic yoke and at least one common magnetic circuit part connected to the magnetic yoke, at least two central magnetic circuit parts and two side magnetic circuit parts, the two side magnetic circuit parts are respectively connected to the outer shell, at least one common magnetic circuit part and at least two central magnetic circuit parts are spaced between the two side magnetic circuit parts, and each common magnetic circuit part is spaced between two adjacent central magnetic circuit parts; the magnetic gap is formed between each central magnetic circuit part and the adjacent common magnetic circuit part and the side magnetic circuit part.

8. The sound-emitting unit according to claim 7, characterized in that: The common magnetic circuit portion includes a common magnet and a common washer which are stacked, and the common magnet is clamped between the common washer and the magnetic yoke; The central magnetic circuit part includes a central magnet and a central washer which are stacked, and the central magnet is mounted between the central washer and the magnetic yoke; The side magnetic circuit portion includes a side magnet and a side washer which are stacked, and the side magnet is sandwiched between the side washer and the magnetic yoke.

9. The sound-emitting unit according to claim 8, characterized in that: The magnetic circuit portion further includes an auxiliary magnet, which is stacked on the common washer and connected to the central portion.

10. A sound module, characterized in that: It comprises the sound-emitting unit as described in any one of claims 1 to 9.

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