Sound production monomer and electronic equipment

Abstract

The utility model belongs to the technical field of electroacoustic conversion, and provides a sounding monomer and an electronic device, the sounding monomer comprises a housing, a magnetic circuit system and a vibration system, the vibration system comprises a diaphragm assembly, a centering disk and a voice coil assembly, the centering disk is connected with one end of the voice coil assembly close to the diaphragm assembly, and the other end is connected with the magnetic circuit system. The centring disk comprises a first disk structure and a second disk structure which are opposite and arranged in a split mode, the first disk structure comprises a base material layer and a conductive layer which are arranged in a stacked mode, the first disk structure is provided with a bonding pad corresponding to the voice coil assembly, the bonding pad is electrically connected with the conductive layer, and the second disk structure is only composed of the base material layer. According to the sound production single body, the second support chip structure which is not electrically connected with the voice coil assembly lead is only formed by the base material layer and is not provided with a bonding pad structure, so that the performance and the reliability are ensured, the production cost of the centering support chip is greatly reduced, the manufacturing cost of the sound production single body is greatly reduced, and the market competitiveness is effectively improved.

Description

Technical Field

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

[0002] As people's requirements for consumer electronic products increase, the performance of speakers has attracted more and more attention, and the demand for improving the sensitivity of speakers has also increased. Under the constraints of speaker structure and size, the sensitivity of the speaker can only be improved by increasing the volume of the magnet as much as possible to increase the BL value of the speaker. For this reason, a dual (multi) voice coil structure is proposed, but this structure requires electrical connection between two or more voice coils through FPC and other methods. How to reduce production costs while ensuring speaker performance is crucial.

[0003] At present, conventional speakers have only one voice coil, and there are only two pads for electrical connection between the voice coil and FPC, etc., which occupies a relatively small space. However, for a dual (multi) voice coil structure, because the electrical connection between the inner and outer voice coils or even N voice coils must be made at the same time, a relatively large FPCB board is required, which will increase the production cost of the centering support, thereby increasing the manufacturing cost of the product and causing the market competitiveness of the product to decline. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the inventors conducted in-depth research and completed the present utility model after paying a lot of creative work.

[0005] Specifically, the technical problem to be solved by the present invention is to provide a sound-emitting unit and an electronic device to solve the technical problem of high production cost of centering supports in current multi-voice coil loudspeaker products.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] A sound-emitting unit comprises a housing, a magnetic circuit system and a vibration system, wherein the vibration system comprises a diaphragm assembly, a centering support and a voice coil assembly, wherein the centering support is connected to one end of the voice coil assembly close to the diaphragm assembly, wherein the centering support comprises two first support structures and a second support structure which are opposite and separately arranged, wherein the first support structure comprises a substrate layer and a conductive layer which are stacked, and the first support structure is provided with a pad corresponding to the voice coil assembly, wherein the pad is electrically connected to the conductive layer, and wherein the second support structure is only composed of the substrate layer.

[0008] According to some embodiments of the present invention, the first support plate structure includes a first fixing portion, a second fixing portion and a third fixing portion distributed in sequence from the outside to the inside, the second support plate structure includes a fourth fixing portion, a fifth fixing portion and a sixth fixing portion distributed in sequence from the outside to the inside, the first fixing portion and the fourth fixing portion are respectively connected to the housing, the voice coil assembly includes a first voice coil and a second voice coil, one end of the first voice coil is respectively connected to the second fixing portion and the fifth fixing portion, and one end of the second voice coil is respectively connected to the third fixing portion and the sixth fixing portion.

[0009] According to some embodiments of the present invention, along the circumferential direction of the centering support,

[0010] The first fixing portion and the fourth fixing portion are sequentially connected to form a complete ring structure;

[0011] and / or, the second fixing portion and the fifth fixing portion are sequentially connected to form a complete ring structure;

[0012] And / or, the third fixing portion and the sixth fixing portion are sequentially connected to form a complete ring structure.

[0013] According to some embodiments of the utility model, at least two solder pads are provided, and the second fixing portion and the third fixing portion are respectively provided with at least one solder pad;

[0014] Alternatively, there are at least three solder pads, wherein the second fixing portion is provided with at least two solder pads and the third fixing portion is provided with at least one solder pad, or the second fixing portion is provided with at least one solder pad and the third fixing portion is provided with at least two solder pads.

[0015] According to some embodiments of the present invention, the first support piece structure is formed as a square structure, and the pads are respectively located at corners of the second fixing portion and the third fixing portion.

[0016] According to some embodiments of the present invention, the second support sheet structure is provided with at least two layers of the substrate layer;

[0017] And / or, the substrate layer is a PI material layer.

[0018] According to some embodiments of the present invention, the first support piece structure and the second support piece structure are symmetrically arranged along the central axis of the centering support piece.

[0019] According to some embodiments of the utility model, the magnetic circuit system includes a magnetic yoke and a magnetic circuit assembly arranged on the magnetic yoke, the magnetic circuit assembly includes a central magnetic portion located at a central position and a plurality of side magnetic portions arranged on the periphery of the central magnetic portion and distributed sequentially from the inside to the outside, the central magnetic portion and the side magnetic portion adjacent thereto and between two adjacent side magnetic portions are spaced apart to form a plurality of magnetic gaps distributed sequentially from the inside to the outside, and the plurality of magnetic gaps are arranged in one-to-one correspondence with the voice coils in the voice coil assembly.

[0020] According to some embodiments of the utility model, the magnetic circuit assembly is provided with a sound outlet gap connected to the internal sound cavity of the sound-emitting unit, and along the vibration direction of the vibration system, at least part of the welding pads are arranged opposite to the sound outlet gap so that the sound outlet gap avoids the welding pad corresponding to it.

[0021] The utility model also discloses an electronic device, comprising the sound-generating monomer of the above embodiment of the utility model.

[0022] After adopting the above technical solution, the beneficial effects of the utility model are:

[0023] The sound unit, the centering support plate includes two opposite and separately arranged first support plate structures and second support plate structures, the first support plate structure includes a stacked base material layer and a conductive layer, and the first support plate structure is provided with a pad corresponding to the voice coil assembly, and the electrical connection with the voice coil assembly is achieved through the pad, and the second support plate structure that is not electrically connected to the lead of the voice coil assembly is only composed of the base material layer and has no pad structure. While ensuring performance and reliability, the production cost of the centering support plate is greatly reduced, thereby greatly reducing the manufacturing cost of the sound unit, and effectively improving the market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 It is a schematic diagram of the explosion structure of the sound-generating unit of the utility model;

[0026] Figure 2 It is a schematic cross-sectional view of the sound-generating unit of the utility model;

[0027] Figure 3 This is a schematic structural diagram of a centering support piece according to the first embodiment of the utility model;

[0028] Figure 4 This is a structural schematic diagram of a centering support piece according to a second embodiment of the utility model;

[0029] Figure 5 It is a structural schematic diagram of the diaphragm of the utility model;

[0030] Reference numerals:

[0031] 1- Shell;

[0032] 2-Magnetic circuit system;

[0033] 21- magnetic yoke;

[0034] 22-magnetic circuit assembly; 22a-sound outlet; 221-central magnetic part; 2211-central magnet; 2212-central magnetic plate; 222-first side magnetic part; 2221-first side magnet; 2222-first side magnetic plate; 223-second side magnetic part; 2231-second side magnet; 2232-second side magnetic plate; 224-first magnetic gap; 225-second magnetic gap;

[0035] 3-Vibration system;

[0036] 31-diaphragm assembly; 311-diaphragm; 3111-external fixing portion; 3112-folding ring portion; 3113-internal fixing portion; 3114-connecting ring; 3115-connecting arm; 312-vibration plate;

[0037] 32-centering support piece; 32a-first support piece structure; 32b-second support piece structure; 321-first fixing part; 322-second fixing part; 323-third fixing part; 324-first connecting part; 325-second connecting part; 326-welding pad; 327-fourth fixing part; 328-fifth fixing part; 329-sixth fixing part; 3210-third connecting part; 3211-third connecting part;

[0038] 33 - voice coil assembly; 331 - first voice coil; 332 - second voice coil. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] like Figures 1 to 5 As shown together, the sound-emitting unit according to the embodiment of the utility model includes a housing 1, a magnetic circuit system 2 and a vibration system 3, the vibration system 3 includes a diaphragm assembly 31, a centering support 32 and a voice coil assembly 33, the centering support 32 is connected to one end of the voice coil assembly 33 close to the diaphragm assembly 31, that is, the voice coil assembly 33 is located on the side of the centering support 32 facing the magnetic circuit system 2, and the diaphragm assembly 31 is located on the side of the centering support 32 facing away from the magnetic circuit system 2, the centering support 32 includes two first support structures 32a and second support structures 32b that are opposite and separately arranged, the first support structure 32a includes a stacked substrate layer and a conductive layer, and the first support structure 32a is provided with a pad 326 corresponding to the voice coil assembly 33, the pad 326 is electrically connected to the conductive layer, and the second support structure 32b is only composed of the substrate layer. Among them, the conductive layer can be a copper foil layer, and the substrate layer can be an insulating material layer.

[0044] Specifically, the top of the voice coil assembly 33 may be connected to the centering support 32, or the side wall of the voice coil assembly 33 at one end close to the diaphragm assembly 31 may be connected to the centering support 32. In particular, since the first support structure 32a is provided with a pad 326 corresponding to the voice coil assembly 33, the first support structure 32a mainly serves to electrically connect the voice coil assembly 33 and the external circuit and balance the vibration of the voice coil assembly 33, and the second support structure 32b is only composed of the substrate layer, and the second support structure 32b serves to balance the voice coil assembly 33.

[0045] According to the sound unit of the embodiment of the utility model, the centering support 32 includes two first support structures 32a and second support structures 32b which are opposite and separately arranged. The first support structure 32a includes a substrate layer and a conductive layer which are stacked, and the first support structure 32a is provided with a soldering pad 326 corresponding to the voice coil assembly 33, and the electrical connection with the voice coil assembly 33 is achieved through the soldering pad 326. The second support structure 32b which is not electrically connected to the lead of the voice coil assembly 33 is only composed of the substrate layer and has no soldering pad structure. While ensuring the performance and reliability, the production cost of the centering support 32 is greatly reduced. The production cost of the centering support 32 can be reduced by about 40%, thereby greatly reducing the manufacturing cost of the sound unit and effectively improving the market competitiveness. In addition, the sound unit only realizes the optimized design of the centering support 32, and does not involve changes in other structures and dimensions. The modification cost is low and the promotion is relatively high.

[0046] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 4 As shown together, the first support plate structure 32a includes a first fixing portion 321, a second fixing portion 322 and a third fixing portion 323 which are sequentially distributed from the outside to the inside, a first connecting portion 324 is provided between the first fixing portion 321 and the second fixing portion 322, a plurality of first connecting portions 324 are provided and respectively connect the first fixing portion 321 and the second fixing portion 322, a second connecting portion 325 is provided between the second fixing portion 322 and the third fixing portion 323, a plurality of second connecting portions 325 are provided and respectively connect the second fixing portion 322 and the third fixing portion 323, and the second support plate structure 32b includes a fourth fixing portion 327, a fifth fixing portion 328 and a sixth fixing portion 329 which are sequentially distributed from the outside to the inside, a third connecting portion 3210 is provided between the fourth fixing portion 327 and the fifth fixing portion 328, a plurality of third connecting portions 3210 are provided and respectively connect the fourth fixing portion 327 and the fifth fixing portion 328, The fourth connecting portion 3211 is provided between the fifth fixing portion 328 and the sixth fixing portion 329, and the fourth connecting portion 3211 is provided with a plurality of parts and respectively connects the fifth fixing portion 328 and the sixth fixing portion 329. The first fixing portion 321 and the fourth fixing portion 327 are respectively connected to the housing 1, thereby realizing the connection between the centering support plate 32 and the housing 1. The voice coil assembly 33 includes a first voice coil 331 and a second voice coil 332. The second voice coil 332 is located on the circumferential inner side of the first voice coil 331. Along the vibration direction of the voice coil assembly 33, one end of the first voice coil 331 is respectively connected to the second fixing portion 322 and the fifth fixing portion 328, thereby realizing the connection between the first voice coil 331 and the centering support plate 32. One end of the second voice coil 332 is respectively connected to the third fixing portion 323 and the sixth fixing portion 329, thereby realizing the connection between the second voice coil 332 and the centering support plate 32.

[0047] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 4 As shown together, along the circumferential direction of the centering support piece 32, the first fixing portion 321 and the fourth fixing portion 327 are sequentially connected to form a complete annular structure; thereby, the outer peripheral edge of the centering support piece 32 is adapted to the outer contour of the outer shell 1, which facilitates the connection between the centering support piece 32 and the outer shell 1.

[0048] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 4 As shown together, along the circumferential direction of the centering support plate 32, the second fixing portion 322 and the fifth fixing portion 328 are sequentially connected to form a complete annular structure; thereby, the second fixing portion 322 of the first support plate structure 32a and the fifth fixing portion 328 of the second support plate structure 32b are adapted to the outer contour of the first voice coil 331 close to one end of the diaphragm assembly 31, which facilitates the connection between the first voice coil 331 and the centering support plate 32.

[0049] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 4 As shown together, along the circumferential direction of the centering support plate 32, the third fixing portion 323 and the sixth fixing portion 329 are sequentially connected to form a complete annular structure; thereby, the third fixing portion 323 of the first support plate structure 32a and the sixth fixing portion 329 of the second support plate structure 32b are adapted to the outer contour of the second voice coil 332 close to the diaphragm assembly 31, which facilitates the connection between the second voice coil 332 and the centering support plate 32.

[0050] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, at least two pads 326 are provided, and the second fixing portion 322 and the third fixing portion 323 are respectively provided with at least one pad 326; thus, the parallel connection of two or more voice coils can be achieved through the pads 326 provided on the second fixing portion 322 and the third fixing portion 323.

[0051] In other embodiments of the present invention, Figure 4 As shown, at least three pads 326 are provided, wherein the second fixing portion 322 is provided with at least two pads 326, and the third fixing portion 323 is provided with at least one pad 326; thus, the pads 326 provided on the second fixing portion 322 and the third fixing portion 323 can realize the series connection of two or more voice coils, and effectively guarantee the product performance. The pads 326 can be arranged at different positions of the centering support 32, for example, at least one pad 326 can be provided on the second fixing portion 322, and at least two pads 326 can be provided on the third fixing portion 323.

[0052] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 4 As shown together, the first support structure 32a is formed into a square structure, and the pads 326 are respectively located at the corners of the second fixing portion 322 and the third fixing portion 323. Thus, the pads 326 can correspond to the leads of the voice coil, which facilitates the welding of the voice coil leads and the pads 326.

[0053] In some embodiments of the present invention, the second support structure 32b is provided with at least two substrate layers, and the substrate layers are connected by adhesive bonding. By adjusting the thickness of the substrate layer and the intermediate adhesive layer, the mass of the first support structure 32a and the second support structure 32b can be made symmetrical, polarization phenomenon can be avoided, and the performance of the sound-emitting unit can be ensured. Moreover, by arranging multiple substrate layers for compounding, the modulus and structural strength of the second support structure 32b can be improved to meet actual use requirements.

[0054] In some embodiments of the present invention, the substrate layer of the second support plate structure 32b is a PI material layer, which can be a pure PI or PI composite structure. The PI material not only has a good insulation effect, but also has a high modulus, meets the mechanical performance requirements, and can greatly reduce the production cost of the centering support plate 32.

[0055] It can be understood that since the lead of the voice coil is located on one side of the first support structure 32a, it is only necessary to electrically connect the first support structure 32a to the lead of the voice coil, so that the second support structure 32b can be designed as a structure with only a base material layer and no copper foil layer, thereby greatly reducing the manufacturing cost of the centering support 32.

[0056] In some embodiments of the present invention, Figure 1 , Figure 3 and Figure 4 As shown together, the first support structure 32a and the second support structure 32b are symmetrically arranged along the central axis of the centering support 32. Thus, the mass and compliance of the first support structure 32a and the second support structure 32b can be symmetrical, and polarization can be effectively avoided.

[0057] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the magnetic circuit system 2 includes a magnetic yoke 21 and a magnetic circuit assembly 22 arranged on the magnetic yoke 21, the magnetic circuit assembly 22 includes a central magnetic portion 221 located at the center and a plurality of side magnetic portions arranged on the periphery of the central magnetic portion 221 and distributed sequentially from the inside to the outside, the central magnetic portion 221 and the side magnetic portion adjacent thereto and between two adjacent side magnetic portions are spaced to form a plurality of magnetic gaps distributed sequentially from the inside to the outside, the plurality of magnetic gaps are arranged one by one corresponding to the voice coils in the voice coil assembly 33, one end of the voice coil is connected to the centering support plate 32, and the other end of the voice coil is respectively inserted in the magnetic gap.

[0058] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, there are two side magnetic parts, including a first side magnetic part 222 and a second side magnetic part 223. The first side magnetic part 222 is located on the outer side of the central magnetic part 221, and the second side magnetic part 223 is located on the outer side of the first side magnetic part 222. The central magnetic part 221, the first side magnetic part 222 and the second side magnetic part 223 are all arranged on the magnetic yoke 21. The second side magnetic part 223 and the first side magnetic part 222 are spaced apart to form a first magnetic gap 224 corresponding to the first voice coil 331. One end of the first voice coil 331 is connected to the second fixed part 322 and the fifth fixed part 328, and the other end of the first voice coil 331 is inserted in the first magnetic gap 224. The first side magnetic part 222 and the central magnetic part 221 are spaced apart to form a second magnetic gap 225 corresponding to the second voice coil 332. One end of the second voice coil 332 is connected to the third fixed part 323 and the sixth fixed part 329, and the other end of the second voice coil 332 is inserted in the second magnetic gap 225.

[0059] In some embodiments of the present invention, Figure 1 As shown, in order to ensure smooth airflow when the sound unit is working, the magnetic circuit component 22 is provided with a sound outlet gap 22a connected to the internal sound cavity of the sound unit. Along the vibration direction of the vibration system 3, at least part of the pads 326 are arranged relative to the sound outlet gap 22a, so that the sound outlet gap 22a avoids the pad 326 corresponding to it. Therefore, when the voice coil lead is electrically connected to the pad 326, the sound outlet gap 22a avoids the welding position of the lead and the pad 326. Therefore, the magnet volume of the sound unit will not be lost, the magnetic induction intensity of the sound unit can be improved, thereby improving the sensitivity of the sound unit, and reducing the cost under the premise of ensuring the magnetic induction intensity and performance of the sound unit.

[0060] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the central magnetic portion 221 includes a central magnet 2211 and a central magnetic plate 2212 arranged on the central magnet 2211, the central magnet 2211 is arranged on the magnetic yoke 21, and the central magnetic plate 2212 is located on the side of the central magnet 2211 away from the magnetic yoke 21 and connected to the central magnet 2211; the first side magnetic portion 222 includes a first side magnet 2221 and a first side magnetic plate 2222, the first side magnet 2221 is formed into a closed annular structure, the first side magnet 2221 is arranged on the magnetic yoke 21, and the first side magnetic plate 2222 is located on the side of the first side magnet 2221 away from the magnetic yoke 21. One side of the magnetic yoke 21 is connected to the first side magnet 2221; the second side magnetic portion 223 includes a second side magnet 2231 and a second side magnetic conductive plate 2232, the second side magnet 2231 includes a plurality of second side magnets 2231, and the second side magnets 2231 are arranged on the magnetic conductive yoke 21, and the adjacent second side magnets 2231 are spaced apart to form a sound outlet 22a, the second side magnetic conductive plate 2232 is an injection molding structure integrally with the shell 1, the second side magnetic conductive plates 2232 respectively correspond to the second side magnets 2231, and the second side magnetic conductive plates 2232 are located on the side of the second side magnet 2231 away from the magnetic conductive yoke 21.

[0061] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the second side magnetic portion 223 is formed into a square structure, and the second side magnetic portion 223 includes a first connecting edge and a second connecting edge connected end to end, and a plurality of second side magnets 2231 are respectively located at the first connecting edge and the second connecting edge, wherein the second side magnet 2231 located at the first connecting edge and the second side magnet 2231 located at the second connecting edge are spaced apart from each other to form a sound outlet gap 22a, thereby making the sound outlet gap 22a correspond to the corner position of the second fixed portion 322 and the fifth fixed portion 328.

[0062] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the second side magnetic portion 223 is formed into a square structure, and the second side magnetic portion 223 includes a first connecting edge and a second connecting edge connected end to end, and a plurality of second side magnets 2231 are respectively located at the first connecting edge and the second connecting edge, wherein the length of the first connecting edge is greater than the length of the second connecting edge, the number of the second side magnets 2231 located at the first connecting edge is at least two, and adjacent second side magnets 2231 located at the first connecting edge are spaced apart to define a sound outlet gap 22a, thereby making the sound outlet gap 22a correspond to the axial edge position of the second fixing portion 322 and the fifth fixing portion 328.

[0063] In some embodiments of the present invention, Figure 1 , Figure 2 and Figure 5As shown together, the diaphragm assembly 31 includes a diaphragm 311 and a vibration plate 312. The diaphragm 311 includes an outer fixing portion 3111, a folding ring portion 3112 and an inner fixing portion 3113 which are arranged in sequence from the outside to the inside. The outer fixing portion 3111 is connected to the first fixing portion 321 and the fourth fixing portion 327. The inner fixing portion 3113 is connected to the second fixing portion 322 and the fifth fixing portion 328. A connecting ring 3114 corresponding to the third fixing portion 323 and the sixth fixing portion 329 is also provided on the circumferential inner side of the inner fixing portion 3113. A connecting arm 3115 is provided between the connecting ring 3114 and the inner fixing portion 3113. There are multiple connecting arms 3115 which are respectively connected to the inner fixing portion 3113 and the connecting ring 3114. The connecting ring 3114 is connected to the third fixing portion 323 and the sixth fixing portion 329. The vibration plate 312 is connected to the inner fixing portion 3113 and the connecting ring 3114. The outer fixing part 3111 of the diaphragm 311 is connected to the first fixing part 321 and the fourth fixing part 327, the inner fixing part 3113 is connected to the second fixing part 322 and the fifth fixing part 328, the connecting ring 3114 is connected to the third fixing part 323 and the sixth fixing part 329, and the voice coil assembly 33 moves, driving the centering support plate 32 to move synchronously, thereby driving the diaphragm assembly 31 to vibrate, thereby achieving more sensitive vibration sound generation.

[0064] The utility model also discloses an electronic device, including the sound-emitting unit according to the above embodiment of the utility model. The specific structure of the sound-emitting unit of the electronic device refers to the above embodiment. Since the electronic device adopts all the technical features of the above sound-emitting unit, the cost of the electronic device is greatly reduced, thereby improving the market competitiveness of the electronic device.

[0065] It can be understood that the electronic device may be a mobile phone, a speaker, a computer, a headset, a watch, a television or a tablet computer, etc., which will not be elaborated here.

[0066] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A sound-emitting unit, characterized in that: The invention comprises a shell, a magnetic circuit system and a vibration system, wherein the vibration system comprises a diaphragm assembly, a centering support and a voice coil assembly, wherein the centering support is connected to one end of the voice coil assembly close to the diaphragm assembly, the centering support comprises two opposite and separately arranged first support structures and second support structures, the first support structure comprises a stacked substrate layer and a conductive layer, and the first support structure is provided with a pad corresponding to the voice coil assembly, the pad is electrically connected to the conductive layer, and the second support structure is only composed of the substrate layer.

2. The sound-emitting unit according to claim 1, characterized in that: The first support structure includes a first fixing portion, a second fixing portion and a third fixing portion which are sequentially distributed from the outside to the inside, the second support structure includes a fourth fixing portion, a fifth fixing portion and a sixth fixing portion which are sequentially distributed from the outside to the inside, the first fixing portion and the fourth fixing portion are respectively connected to the housing, the voice coil assembly includes a first voice coil and a second voice coil, one end of the first voice coil is respectively connected to the second fixing portion and the fifth fixing portion, and one end of the second voice coil is respectively connected to the third fixing portion and the sixth fixing portion.

3. The sound-emitting unit according to claim 2, characterized in that: Along the circumferential direction of the centering blade, The first fixing portion and the fourth fixing portion are sequentially connected to form a complete ring structure; and / or, the second fixing portion and the fifth fixing portion are sequentially connected to form a complete ring structure; And / or, the third fixing portion and the sixth fixing portion are sequentially connected to form a complete ring structure.

4. The sound-emitting unit according to claim 2, characterized in that: There are at least two solder pads, and the second fixing portion and the third fixing portion are respectively provided with at least one solder pad; Alternatively, there are at least three solder pads, wherein the second fixing portion is provided with at least two solder pads and the third fixing portion is provided with at least one solder pad, or the second fixing portion is provided with at least one solder pad and the third fixing portion is provided with at least two solder pads.

5. The sound-emitting unit according to claim 2, characterized in that: The first support structure is formed into a square structure, and the pads are respectively located at corners of the second fixing portion and the third fixing portion.

6. The sound-emitting unit according to claim 1, characterized in that: The second support sheet structure is provided with at least two layers of the substrate layer; And / or, the substrate layer is a PI material layer.

7. The sound-emitting unit according to any one of claims 1 to 6, characterized in that: The first support piece structure and the second support piece structure are symmetrically arranged along the central axis of the centering support piece.

8. The sound-emitting unit according to any one of claims 1 to 6, characterized in that: The magnetic circuit system includes a magnetic yoke and a magnetic circuit assembly arranged on the magnetic yoke, the magnetic circuit assembly includes a central magnetic part located at a central position and a plurality of side magnetic parts arranged on the periphery of the central magnetic part and distributed sequentially from the inside to the outside, the central magnetic part and the side magnetic part adjacent thereto and between two adjacent side magnetic parts are spaced to form a plurality of magnetic gaps distributed sequentially from the inside to the outside, and the plurality of magnetic gaps are arranged one-to-one correspondingly to the voice coils in the voice coil assembly.

9. The sound-emitting unit according to claim 8, characterized in that: The magnetic circuit assembly is provided with a sound outlet notch connected to the internal sound cavity of the sound-emitting unit. Along the vibration direction of the vibration system, at least part of the pads are arranged opposite to the sound outlet notch so that the sound outlet notch avoids the pad corresponding to it.

10. An electronic device, characterized in that: It comprises a sound-emitting unit according to any one of claims 1 to 9.

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