Sound-generating devices and electronic equipment

Abstract

This invention discloses a sound-generating device and an electronic device. The sound-generating device includes a magnetic circuit system, a conductive support, and a vibration system. The magnetic circuit system has mounting holes, a first magnetic gap, and a second magnetic gap arranged sequentially from the inside to the outside. The conductive support is disposed in the mounting holes. The vibration system includes a diaphragm assembly, a voice coil assembly, and a first support plate. The diaphragm assembly is disposed opposite to the magnetic circuit system. The voice coil assembly includes a first voice coil and a second voice coil. One end of the first and second voice coils is fixed to the diaphragm assembly, and the other ends are respectively disposed corresponding to the first and second magnetic gaps. The first voice coil is connected to the second voice coil through a connecting wire, and the first voice coil, the connecting wire, and the second voice coil are formed by winding a single wire. One end of the first support plate is connected to the diaphragm assembly and electrically connected to the voice coil assembly, and the other end of the first support plate is electrically connected to the conductive support. The technical solution of this invention aims to improve the operational stability of the vibration system of the sound-generating device and enhance the sound generation effect.

Description

Technical Field

[0001] This invention relates to the field of electroacoustic equipment, and particularly to a sound-generating device and an electronic device. Background Technology

[0002] Sound-generating devices are crucial electroacoustic transducers in consumer electronics, widely used in loudspeakers, earpieces, and headphones. To achieve high performance and large amplitude, a multi-voice-coil sound-generating device has been proposed, where multiple voice coils synchronously drive a single diaphragm. While this structure increases the amplitude and sensitivity of the sound-generating device, the multiple voice coils complicate its structure, increasing the difficulty of setting up the corresponding centering structure and affecting the centering effect of the centering support. Therefore, maintaining the vibrational stability of a large-amplitude vibration system becomes a pressing problem to solve. Summary of the Invention

[0003] The main objective of this invention is to provide a sound-generating device that aims to improve the operational stability of the vibration system of the sound-generating device and enhance the sound-generating effect.

[0004] To achieve the above objectives, the sound-generating device proposed in this invention includes:

[0005] The magnetic circuit system is provided with mounting holes, a first magnetic gap, and a second magnetic gap arranged sequentially from the inside to the outside;

[0006] A conductive support is disposed in the mounting hole; and

[0007] A vibration system includes a diaphragm assembly, a voice coil assembly, and a first support plate. The diaphragm assembly is disposed opposite to the magnetic circuit system. The voice coil assembly includes a first voice coil and a second voice coil. One end of the first voice coil is fixed to the diaphragm assembly, and the other end is disposed corresponding to the first magnetic gap. One end of the second voice coil is fixed to the diaphragm assembly, and the other end is disposed corresponding to the second magnetic gap. The first voice coil is connected to the second voice coil through a connecting wire, and the first voice coil, the connecting wire, and the second voice coil are formed by winding a single wire. One end of the first support plate is connected to the diaphragm assembly and electrically connected to the voice coil assembly, and the other end of the first support plate is electrically connected to the conductive support.

[0008] In one embodiment, the magnetic circuit system includes a magnetic yoke and a central magnetic circuit portion, a first side magnetic circuit portion, and a second side magnetic circuit portion disposed on the same side of the magnetic yoke. The first side magnetic circuit portion is disposed around the central magnetic circuit portion and forms a first magnetic gap with the central magnetic circuit portion. The second side magnetic circuit portion is disposed around the first side magnetic circuit portion and forms a second magnetic gap with the first side magnetic circuit portion. The mounting hole passes through the magnetic yoke and the central magnetic circuit portion.

[0009] In one embodiment, the second voice coil is connected to the first voice coil via a section of the connecting wire, both leads of the voice coil assembly are connected to the first voice coil and extend toward the interior of the first voice coil, and the first branch is located inside the first voice coil.

[0010] In one embodiment, the first support includes a first connecting portion, a first elastic portion, and a second connecting portion connected in sequence. The first connecting portion is electrically connected to the conductive support, and the second connecting portion is fixed to the diaphragm assembly and electrically connected to the lead wire of the voice coil assembly.

[0011] In one embodiment, the central magnetic circuit portion includes a central magnet connected to the magnetic yoke and a central washer disposed at one end of the central magnet near the diaphragm assembly. The surface of the central washer near the diaphragm assembly is provided with a second clearance groove corresponding to the second connection portion.

[0012] In one embodiment, the first connecting portion, the first elastic portion, and the second connecting portion are integrally formed.

[0013] In one embodiment, the first elastic portion has at least one bend.

[0014] In one embodiment, multiple first support plates are provided, and the multiple first support plates are arranged at intervals along the circumference of the conductive support.

[0015] In one embodiment, the plurality of the first support pieces are integrally formed.

[0016] In one embodiment, the main body of the first support piece is made of an insulating material, and conductive lines are provided on the insulating material. The voice coil assembly is electrically connected to the conductive support through the conductive lines.

[0017] In one embodiment, the sound-generating device further includes a housing connecting the magnetic circuit system and the diaphragm assembly, and the vibration system further includes a second support plate, wherein a plurality of the second support plates are arranged at intervals along the circumference of the second voice coil, and the second voice coil is also connected to the housing through the second support plate.

[0018] In one embodiment, the second support includes a third connecting portion, a second elastic portion, and a fourth connecting portion connected in sequence. The third connecting portion is connected to the second voice coil, and the fourth connecting portion is connected to the housing.

[0019] In one embodiment, the second side magnetic circuit portion is provided with a plurality of clearance notches that connect to the second magnetic gap, and a second support piece is correspondingly provided in one of the clearance notches.

[0020] In one embodiment, the third connecting portion, the second elastic portion, and the fourth connecting portion are integrally formed.

[0021] In one embodiment, the second elastic portion has at least one bend.

[0022] In one embodiment, the second sheet is made of an elastomer, metal, or engineering plastic.

[0023] In one embodiment, the diaphragm assembly includes:

[0024] A diaphragm is disposed opposite to the magnetic circuit system, and an inner ring hole is provided in the center of the diaphragm;

[0025] The skeleton is disposed in the inner annular hole and connected to the diaphragm; the first support plate is connected to the skeleton; and the skeleton has mounting holes corresponding to the conductive bracket.

[0026] A spherical dome, wherein the spherical dome is disposed at the assembly hole;

[0027] Both the first voice coil and the second voice coil are connected to the skeleton.

[0028] In one embodiment, the frame is provided with a connecting flange extending from the edge of the mounting hole toward the mounting hole. The first support includes a first connecting portion, a first elastic portion, and a second connecting portion connected in sequence. The first connecting portion is electrically connected to the conductive bracket. The second connecting portion is fixed to the diaphragm assembly and electrically connected to the lead wire of the voice coil assembly. A transition section extending along the vibration direction of the vibration system is provided between the second connecting portion and the first elastic portion. The transition section is connected to the connecting flange.

[0029] The present invention also proposes an electronic device including the aforementioned sound-generating device.

[0030] In this invention, by arranging multiple voice coils, the amplitude of the vibration system can be increased, thereby enhancing the loudness of the sound-generating device. The first support plate is connected to the conductive bracket, which is located within the magnetic circuit system. Since the magnetic circuit system is relatively fixed to the outer shell, it provides a support point for the vibration system, ensuring that the first support plate provides a stabilizing force and preventing swaying and polarization during large-amplitude vibrations. Furthermore, because multiple second support plates are arranged at circumferential intervals, multiple circumferentially spaced positions on the vibration system can receive stabilizing forces from the second support plates, which helps ensure the vibration stability of the system. Based on this, the first support piece is reused as an electrical connection structure, allowing the first and second voice coils to be electrically connected to the conductive bracket via the first support piece, thus achieving electrical connection with an external power source. This eliminates the need for additional electrical connection structures. Furthermore, since the first and second voice coils are integrally wound with a single conductor, they maintain a conductive connection. Therefore, it is not necessary to have two separate leads for each voice coil; a single lead-in and a single lead-out wire are sufficient for the entire first and second voice coil assembly. The electrical connection points on the first support piece can also be simplified to two. This simplifies the structure of the sound-generating device, facilitating the layout of the internal space and reducing its size, thus ensuring miniaturization. In addition, by placing the conductive bracket within the mounting holes of the magnetic circuit system, the space required for the first support piece to extend out of the magnetic circuit system is eliminated, thereby increasing the volume of the magnetic circuit system and improving the product's black-and-white (BL) value. Furthermore, due to severe magnetic leakage at the central position of the magnetic circuit system, the mounting hole needs to be formed by removing at least a portion of the central magnet at the central position of the magnetic circuit system. This reduces the amount of magnetic leakage of the central magnet. When the sound-generating device is assembled with electronic equipment, the impact of magnetic leakage of the central magnet in the sound-generating device on the performance of the electronic equipment can be reduced, thus meeting the requirements of the electronic equipment for the amount of magnetic leakage. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the exploded structure of an embodiment of the sound-generating device of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure of a voice coil assembly of the sound-generating device of the present invention;

[0034] Figure 3This is a schematic diagram of the structure of one embodiment of the two integrally formed first supports of the sound-generating device of the present invention;

[0035] Figure 4 This is a schematic diagram of the structure exposed after removing the diaphragm assembly in an embodiment of the sound-generating device of the present invention;

[0036] Figure 5 This is a schematic diagram of the structure of the top (the side where the diaphragm assembly is disposed) of the sound-generating device of the present invention;

[0037] Figure 6 for Figure 2 A schematic diagram of the cross-sectional structure cut along XX;

[0038] Figure 7 for Figure 6 A magnified view of the local structure between the two dashed lines in the image;

[0039] Figure 8 This is a schematic diagram showing the cooperation of the conductive support and magnetic yoke of one embodiment of the sound-generating device of the present invention.

[0040] Figure 9 This is a magnified view of a portion of the skeleton of the diaphragm assembly of the sound-generating device of the present invention at the assembly hole.

[0041] Explanation of icon numbers:

[0042] 100. Outer shell;

[0043] 200. Magnetic circuit system; 201. First magnetic gap; 202. Second magnetic gap; 203. Mounting hole; 210. Magnetic yoke;

[0044] 220. Central magnetic circuit section; 221. Central magnet; 222. Central washer; 2221. Second clearance groove;

[0045] 230. First side magnetic circuit section; 231. First side magnet; 232. First side washer;

[0046] 240. Second side magnetic circuit section; 241. Second side magnet; 242. Second side washer; 243. Avoidance gap;

[0047] 300. Vibration system;

[0048] 310. Diaphragm assembly; 311. Diaphragm; 3111. Inner ring hole; 312. Frame; 3121. Assembly hole; 3122. Connecting flange; 3123. First boss; 3124. Second boss; 313. Dome;

[0049] 320. First voice coil; 325. Lead wire; 326. Connecting wire; 330. Second voice coil;

[0050] 340. First support piece; 341. First connecting part; 342. Second connecting part; 343. First elastic part; 344. Adapter section;

[0051] 350. Second support piece; 351. Third connecting part; 352. Fourth connecting part; 353. Second elastic part;

[0052] 400. Conductive support; 410. Main body component; 420. Solder pad.

[0053] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0055] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0056] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0057] This invention proposes a sound-generating device.

[0058] Reference Figures 1 to 8 In one embodiment of the present invention, the sound-generating device includes:

[0059] The magnetic circuit system 200 is provided with mounting holes 203, a first magnetic gap 201 and a second magnetic gap 202 arranged sequentially from the inside to the outside.

[0060] Conductive support 400 is disposed in the mounting hole 203; and

[0061] The vibration system 300 includes a diaphragm assembly 310, a voice coil assembly, and a first support 340. The diaphragm assembly 310 is disposed opposite to the magnetic circuit system 200. The voice coil assembly includes a first voice coil 320 and a second voice coil 330. One end of the first voice coil 320 is fixed to the diaphragm assembly 310, and the other end is disposed corresponding to the first magnetic gap 201. One end of the second voice coil 330 is fixed to the diaphragm assembly 310, and the other end is disposed corresponding to the second magnetic gap 202. The first voice coil 320 is connected to the second voice coil 330 through a connecting wire 326, and the first voice coil 320, the connecting wire 326, and the second voice coil 330 are formed by winding a single wire. One end of the first support 340 is connected to the diaphragm assembly 310 and electrically connected to the voice coil assembly, and the other end of the first support 340 is electrically connected to the conductive support 400.

[0062] In this invention, by arranging multiple voice coils, the amplitude of the vibration system 300 can be increased, thereby enhancing the loudness of the sound-generating device. The first support plate 340 is connected to the conductive bracket 400, which is located in the magnetic circuit system 200, thus providing a support point for the vibration system 300. This ensures that the first support plate 340 provides a stabilizing force for the vibration system 300, preventing swaying and polarization during large-amplitude vibrations. Furthermore, since multiple second support plates 350 are arranged at circumferential intervals, multiple circumferentially spaced positions on the vibration system 300 can receive the stabilizing force provided by the second support plates 350, which helps ensure the vibration stability of the vibration system 300. Based on this, the first support plate 340 is reused as an electrical connection structure, allowing the first voice coil 320 and the second voice coil 330 to be electrically connected to the conductive support 400 via the first support plate 340, thus achieving electrical connection with an external power source without the need for additional electrical connection structures. Furthermore, since the first and second voice coils 320 and 330 are integrally wound with a single wire, they maintain a conductive relationship. Therefore, it is not necessary to provide two separate leads 325 for each voice coil; a single lead-in wire and a single lead-out wire are sufficient for the entire first and second voice coils 320. The electrical connection points on the first support plate 340 can also be simplified to two. This simplifies the structure of the sound-generating device, facilitates the layout of the internal space, and also helps to reduce the size of the sound-generating device, ensuring its miniaturization.

[0063] Furthermore, by placing the conductive support 400 within the mounting hole 203 of the magnetic circuit system 200, the space required for the first support plate 340 to be led out in the magnetic circuit system 200 is eliminated, thereby increasing the volume of the magnetic circuit system 200 and improving the product's BL value. Additionally, due to severe magnetic leakage at the central position of the magnetic circuit system 200, the mounting hole 203 needs to be formed by removing at least a portion of the central magnet 221 in the magnetic circuit system 200. This reduces the magnetic leakage of the central magnet 221. When the sound-generating device is assembled with electronic equipment, the impact of magnetic leakage of the central magnet 221 on the performance of the electronic equipment can be reduced, meeting the electronic equipment's requirements for magnetic leakage.

[0064] It should be noted that the end of the first voice coil 320 facing away from the diaphragm assembly 310 is positioned corresponding to the first magnetic gap 201, and the end of the second voice coil 330 facing away from the diaphragm assembly 310 is positioned corresponding to the second magnetic gap 202. This means that the end of the first voice coil 320 can be inserted into the first magnetic gap 201, or it can be located above the first magnetic gap 201. Similarly, the end of the second voice coil 330 can be inserted into the second magnetic gap 202, or it can be located above the second magnetic gap 202.

[0065] In one embodiment, the magnetic circuit system 200 includes a magnetic yoke 210 and a central magnetic circuit portion 220, a first side magnetic circuit portion 230, and a second side magnetic circuit portion 240 disposed on the same side of the magnetic yoke 210. The first side magnetic circuit portion 230 is disposed around the central magnetic circuit portion 220 and forms a first magnetic gap 201 between the two. The second side magnetic circuit portion 240 is disposed around the first side magnetic circuit portion 230 and forms a second magnetic gap 202 with the two. The second side magnetic circuit portion 240 is provided with a clearance notch 243 for accommodating the first support piece 340. The mounting hole 203 passes through the magnetic yoke 210 and the central magnetic circuit portion 220.

[0066] Without loss of generality, the central magnetic circuit section 220 includes a central magnet 221 and a central washer 222, the first side magnetic circuit section 230 includes a first side magnet 231 and a first side washer 232, and the second side magnetic circuit section 240 includes a second side magnet 241 and a second side washer 242.

[0067] Thus, by using the first side magnetic circuit section 230 as a shared magnetic circuit structure for the first magnetic gap 201 and the second magnetic gap 202, the structure of the magnetic circuit system 200 is simplified, reducing the production cost of the sound-generating device. Simultaneously, it helps to reduce the radial dimensions of the sound-generating device. Furthermore, since the mounting hole 203 penetrates the magnetic yoke 210 and the central magnetic circuit section 220, it facilitates the connection between the conductive support 400 and the magnetic yoke 210. This allows the conductive support 400 to form conductive positions both inside and outside the sound-generating device. The external conductive position is used for electrical connection to an external power source, while the internal conductive position is used for electrical connection to the first support piece 340.

[0068] Of course, in other embodiments, the first magnetic gap 201 and the second magnetic gap 202 can be constructed by two independent magnetic circuit groups respectively. The central magnetic circuit structure of the second magnetic gap 202 can be superimposed on the side magnetic circuit structure of the first magnetic gap 201, which can also achieve the purpose of reducing the radial dimension. The through mounting hole 203 can also be omitted on the magnetic yoke 210. An electrical connection structure for connecting with an external power source is formed on the magnetic yoke 210. The conductive bracket 400 is installed on the magnetic yoke 210 and electrically connected to the electrical connection structure.

[0069] In one embodiment, please refer to Figure 3 and Figure 4 The second voice coil 330 is connected to the first voice coil 320 via a connecting wire 326. Two leads 325 of the voice coil assembly are respectively located on the first voice coil 320 and the second voice coil 330. The first branch 340 is electrically connected to both leads 325. That is, a wire is first wound to form one of the first voice coil 320 and the second voice coil 330, and then wound to form the other. This facilitates the processing and shaping of the first and second voice coils 320 and helps ensure the structural stability of the first and second voice coils 320 and 330. One of the first and second leads 325 is used to input current into the voice coil assembly, and the other is used to supply current to the voice coil assembly. By connecting the first and second leads 325 to the first branch 340, the voice coil assembly can be connected to an external power source through the circuit on the first branch 340.

[0070] The lead wire 325 can be located outside the second voice coil 330 or inside the first voice coil 320, or between the first voice coil 320 and the second voice coil 330. The lead wire 325 and the connecting wire 326 can be arranged close to each other on the same side or on opposite sides. Without loss of generality, the lead wire 325 of the first voice coil 320 and the lead wire 325 of the second voice coil 330 are located on one side of the long axis of the voice coil assembly, and the connecting wire 326 is located on the other side of the long axis of the voice coil assembly. The lead wire 325 of the first voice coil 320 is located on the inner circumference of the first voice coil 320, and the lead wire 325 of the second voice coil 330 is located on the inner circumference of the second voice coil 330, and is located between the first voice coil 320 and the second voice coil 330. This facilitates the winding of the first voice coil 320 and the second voice coil 330, and facilitates the electrical connection between the first support 340 and the lead wires 325 of the first voice coil 320 and the second voice coil 330.

[0071] In one embodiment, please refer to the following: Figure 2 , Figure 4 and Figure 7 The first support plate 340 includes a first connecting portion 341, a first elastic portion 343, and a second connecting portion 342 connected in sequence. The first connecting portion 341 is electrically connected to the conductive support 400, and the second connecting portion 342 is fixed to the diaphragm assembly 310 and electrically connected to the lead wire 325 of the voice coil assembly. Thus, the first connecting portion 341 provides a stable connection structure for the conductive support 400, and the second connecting portion 342 provides a stable connection structure for the lead wire 325 of the voice coil assembly, facilitating the consistency of movement between the second connecting portion 342, the voice coil assembly, and the diaphragm assembly 310. The first elastic portion 343 has the ability to deform and recover from deformation, preventing lateral displacement and unnecessary vibration of the system, thereby ensuring the clarity and accuracy of the sound quality. Of course, in other embodiments, the lead wire 325 of the voice coil assembly can also be connected to the first connecting portion 341, provided that the lead wire 325 is of sufficient length.

[0072] In one embodiment, please refer to the following: Figure 2 and Figure 4The central magnetic circuit section 220 includes a central magnet 221 connected to the magnetic yoke 210, and a central washer 222 disposed at one end of the central magnet 221 near the diaphragm assembly 310. A second clearance groove 2221 is provided on the surface of the central washer 222 near the diaphragm assembly 310 corresponding to the second connecting portion 342. Thus, the second clearance groove 2221 can avoid the second connecting portion 342. When the first support plate 340 is driven and moves in the vibration direction of the vibration system 300, the second clearance groove 2221 can provide sufficient movement space for the second connecting portion 342, ensuring that the first support plate 340 is not interfered with, thereby ensuring that the movement of each voice coil and diaphragm assembly 310 is not affected. This allows the internal structure of the sound-generating device to be compactly arranged axially without interference, which is beneficial for miniaturizing the sound-generating device. Of course, in other embodiments, the distance between the central washer 222 and the second connecting portion 342 in the vibration direction of the vibration system 300 can be increased to achieve avoidance between the two.

[0073] In one embodiment, the first connecting portion 341, the first elastic portion 343, and the second connecting portion 342 are integrally formed. This helps ensure the structural stability and consistency of the first support piece 340, while also facilitating its production, processing, and assembly. Of course, in other embodiments, the first connecting portion 341, the first elastic portion 343, and the second connecting portion 342 of the first support piece 340 can also be separately formed and then bonded, welded, or snapped together.

[0074] In one embodiment, the first elastic portion 343 has at least one bend. This allows the first elastic portion 343 to have a certain deformation capacity and the ability to recover from deformation, ensuring that the first elastic portion 343 can absorb vibration energy from other directions. The bend can be horizontal or along the vibration direction of the vibration system 300. Of course, in other embodiments, the first elastic portion 343 can also have other structural forms.

[0075] In one embodiment, please refer to the following: Figure 1 , Figure 2 and Figure 4 Multiple first support plates 340 are provided, and these first support plates 340 are arranged at intervals along the circumference of the conductive support 400. This enhances the stabilizing effect of the first support plates 340 on the diaphragm assembly 310, ensuring the vibration stability of the vibration system 300. Simultaneously, the electrical connection points between the first support plates 340 and the two voice coils are dispersed, preventing excessive heat concentration and ensuring the stability of the electrical connection between the first support plates 340 and the two voice coils. Of course, in other embodiments, only one first support plate 340 may be provided, and the positions of the electrical connections between the first support plate 340 and the two voice coils may be dispersed.

[0076] Without loss of generality, in the long axis direction of the magnetic circuit system 200, two first support plates 340 are symmetrically provided. One first support plate 340 has two first pads and one second pad on its second connecting segment, and the other first support plate 340 has one second pad on its second connecting segment. The two first pads are respectively used for electrical connection of the two leads 325 of the first voice coil 320, and the two second pads are respectively used for electrical connection of the two leads 325 of the second voice coil 330. However, the present invention is not limited to this. In other embodiments, the two first pads may be provided on the second connecting segments of the two first support plates 340 respectively. That is, one first support plate 340 has one first pad and one second pad on its second connecting segment, and the other first support plate 340 also has one first pad and one second pad on its second connecting segment; or, one first support plate 340 has two first pads on its second connecting segment, and the other first support plate 340 has two second pads on its second connecting segment.

[0077] In one embodiment, the plurality of first support pieces 340 are integrally formed. This improves the structural consistency of the plurality of first support pieces 340 and facilitates their processing, forming, and assembly. Specifically, the first connecting portion 341 of the plurality of first support pieces 340 is integrally formed, and the conductive support 400 is connected to the integrally formed first connecting portion 341. The first connecting portion 341 is provided with at least two third pads to correspond to at least the positive and negative terminal connection positions of the conductive support 400. Of course, in other embodiments, the plurality of first support pieces 340 can also be separately formed and independently connected to the conductive support 400.

[0078] In one embodiment, the main body of the first support piece 340 is made of an insulating material, and conductive lines are provided on the insulating material. Both the first voice coil 320 and the second voice coil 330 are electrically connected to the conductive support 400 through the conductive lines. Thus, the first voice coil 320 and the second voice coil 330 can be stably and reliably electrically connected to the conductive support 400 through the conductive lines on the first support piece 340, ensuring the working performance of the sound-generating device. Of course, in other embodiments, the main body of the first support piece 340 may also be made of a conductive material, with an insulating film layer covering the outer surface of the first support piece 340.

[0079] Optionally, the insulating material used for the main body of the first sheet 340 is a composite material, which combines the advantages of multiple materials to give the main body of the first sheet 340 sufficient hardness and strength, enabling the first sheet 340 to stably and reliably provide stabilizing force for the vibration system 300. Specifically, it can be glass fiber reinforced plastic, with epoxy resin, polyester resin, etc. as the matrix material and glass fiber as the reinforcing material; it can also be carbon fiber reinforced plastic, with epoxy resin, bismaleimide, etc. as the matrix material and carbon fiber as the reinforcing material; it can also be aramid fiber reinforced plastic, with epoxy resin, phenolic resin, etc. as the matrix material and aramid fiber as the reinforcing material; or it can be a glass cloth laminate, with epoxy resin as the matrix material and glass fiber cloth as the reinforcing material. Of course, in other embodiments, the insulating material used for the main body of the first sheet 340 can also be a single material, such as engineering plastic or rubber.

[0080] In one embodiment, please refer to the following: Figures 1 to 3 The second side magnetic circuit portion 240 is formed into a square structure, and each of the four corners of the second side magnetic circuit portion 240 is provided with a clearance notch 243. Four second support plates 350 are arranged one-to-one within the corresponding clearance notch 243. This facilitates the layout of the internal components of the sound-generating device, allowing for compact cooperation between components without interference, which is beneficial for the miniaturization design of the sound-generating device. Furthermore, the four second support plates 350 can act relatively evenly on the second voice coil 330 in the circumferential direction, thereby ensuring the vibration stability of the vibration system 300. Specifically, the second side magnet 241 and the second side washer 242 are correspondingly formed with clearance notches 243. Of course, in other embodiments, the second side magnetic circuit can also be annular or quasi-annular.

[0081] In one embodiment, please refer to Figure 1 The first side magnetic circuit portion 230 is formed as a closed ring structure, and the second side magnetic circuit portion 240 includes a plurality of second side magnets 241 arranged at intervals, with the avoidance gap 243 defined between adjacent second side magnets 241.

[0082] For the first side magnetic circuit section 230, the first side magnet 231 can be configured as a circumferentially continuous structure, or multiple first side magnets 231 can be arranged discontinuously along the circumference and compactly arranged in a ring, with a small interval between each two adjacent first side magnets 231. This allows the first side magnetic circuit section 230 to have a compact layout in the circumferential direction, forming a structure similar to a closed ring. Simultaneously, the length of the first side magnets 231 is controlled to facilitate their production and processing. The first side washer 232 can be configured as a circumferentially continuous structure. This fully utilizes the circumferential space, maximizing the volume of the first side magnets 231 to ensure the magnetic field strength of the first magnetic gap 201 and the second magnetic gap 202, thereby ensuring the sound-generating performance of the sound-generating device. Of course, in other embodiments, provided the magnetic field strength of the first side magnetic circuit section 230 is sufficient, the interval between the multiple magnets included in the first side magnet 231 can also be set larger.

[0083] For the second side magnetic circuit section 240, second side magnets 241 are distributed differently in at least the long axis direction and the short axis direction. The second side magnets 241 in the long axis direction and the short axis direction are arranged with a large interval to form clearance gaps 243 at the four corners of the second side magnetic circuit section 240. Furthermore, on each side in the long axis direction, multiple second side magnets 241 arranged in sequence can be correspondingly arranged so that the second side magnets 241 have a suitable length to facilitate the production and processing of the second side magnets 241. The interval between multiple second side magnets 241 arranged on the same long axis side can be slightly smaller to make them arranged compactly, which is beneficial to ensuring the magnetic field strength of the second side magnetic circuit section 240. Of course, in other embodiments, the first side magnet 231 may have a circumferential continuous structure, and clearance gaps 243 may be formed by recessing at the corner positions facing the diaphragm assembly 310 towards the magnetic yoke 210.

[0084] In one embodiment, the magnetic yoke 210 and the conductive support 400 are integrally injection molded. For details, please refer to... Figure 7The conductive support 400 includes a main body 410 and pads 420. The main body 410 is connected to the magnetic yoke 210, and the pads 420 are embedded in the main body 410. The pads have exposed conductive positions on opposite sides of the magnetic yoke 210. The conductive positions exposed outside the sound-generating device are used for external power supply connection, and the conductive positions exposed inside the sound-generating device are used for connection to the first connecting part 341. The main body 410 can be made of plastic, allowing the magnetic yoke 210 and the conductive support 400 to be integrally injection molded, thus eliminating the assembly process between the magnetic yoke 210 and the conductive support 400 and improving the connection stability between them. Alternatively, in other embodiments, the magnetic yoke 210 and the conductive support 400 can be separately molded and then assembled into one piece.

[0085] In one embodiment, please refer to the following: Figure 2 , Figure 4 , Figure 6 and Figure 7 The sound-generating device further includes a housing 100 connecting the magnetic circuit system 200 and the diaphragm assembly 310. The vibration system 300 also includes a second support plate 350, with multiple second support plates 350 spaced circumferentially along the second voice coil 330. The second voice coil 330 is also connected to the housing 100 via the second support plates 350. Thus, the housing 100 provides additional support points for the vibration system 300, ensuring the vibration stability of the vibration system 300. Furthermore, since multiple second support plates 350 are spaced circumferentially, multiple circumferentially spaced positions on the vibration system 300 can receive stabilizing forces provided by the second support plates 350, which helps ensure the circumferential vibration consistency of the vibration system 300. Of course, in other embodiments, the second support plates 350 may not be provided, or the second support plates 350 may be connected to both the diaphragm assembly 310 and the housing 100.

[0086] In one embodiment, please refer to Figure 1 and Figure 4 The second support piece 350 includes a third connecting portion 351, a second elastic portion 353, and a fourth connecting portion 352 connected in sequence. The third connecting portion 351 is connected to the second voice coil 330, and the fourth connecting portion 352 is connected to the outer casing 100. The second elastic portion 353 has at least one bend. Thus, the second elastic portion 353 has a certain deformation capacity and the ability to recover from deformation, ensuring that the second elastic portion 353 can absorb vibration energy from other directions and prevent lateral displacement and unnecessary vibration of the vibration system 300. The bend in the second elastic portion 353 can be bent horizontally or along the vibration direction of the vibration system 300. Of course, in other embodiments, the second support piece 350 can also have other structural forms.

[0087] In one embodiment, the third connecting portion 351, the second elastic portion 353, and the fourth connecting portion 352 are integrally formed. This helps ensure the structural stability and consistency of the second support piece 350, while also facilitating its production, processing, and assembly. Of course, in other embodiments, the third connecting portion 351, the second elastic portion 353, and the fourth connecting portion 352 of the second support piece 350 can also be separately formed and then bonded, welded, or snap-fitted together.

[0088] In one embodiment, the second support plate 350 is made of one of the following materials: rubber, elastomer, metal, or engineering plastic. The metal can be stainless steel, spring steel, or aluminum alloy; the elastomer can be polyurethane or polyester; and the engineering plastic can be nylon, polyoxymethylene, polyimide, or polytetrafluoroethylene. This ensures the structural stability of the second support plate 350 while also providing sufficient deformation and recovery capabilities, enabling it to reliably provide stabilizing force to the vibration system 300. Of course, in other embodiments, the second support plate 350 can also be made of other suitable materials.

[0089] In one embodiment, please refer to the following: Figure 1 and Figure 4 The second side magnetic circuit portion 240 is provided with a plurality of clearance notches 243 communicating with the second magnetic gap 202, and a second support piece 350 is correspondingly provided with one of the clearance notches 243. In this way, the clearance notches 243 can avoid the second support piece 350, and when the second support piece 350 is driven to move in the vibration direction of the vibration system 300, the clearance notches 243 can provide sufficient movement space for the second support piece 350, so that the second support piece 350 is not interfered with, thereby ensuring that the movement of the voice coil and diaphragm assembly 310 is not affected. Specifically, both the second side magnet 241 and the second side washer 242 are provided with clearance notches 243. This allows the internal structure of the sound-generating device to be compactly arranged without interference. Of course, in other embodiments, the second support piece 350 and the magnetic circuit structure can also be staggered.

[0090] In one embodiment, please refer to the following: Figure 1 , Figure 4 , Figure 7 and Figure 9 The diaphragm assembly 310 includes:

[0091] A diaphragm 311 is disposed opposite to the magnetic circuit system 200, and an inner ring hole 3111 is provided in the center of the diaphragm 311.

[0092] A frame 312 is disposed in the inner annular hole 3111 and connected to the diaphragm 311. The first support plate 340 is connected to the frame 312. The frame 312 has an assembly hole 3121 corresponding to the conductive support 400.

[0093] A dome 313 is provided to cover the mounting hole 3121;

[0094] Both the first voice coil 320 and the second voice coil 330 are connected to the frame 312.

[0095] In one embodiment, the frame 312 is provided with a connecting flange 3122 extending from the edge of the assembly hole 3121 toward the mounting hole 203, and the side of the first support piece 340 facing away from the conductive bracket 400 is connected to the connecting flange 3122.

[0096] In this embodiment, the diaphragm assembly 310 is configured as a three-part structure consisting of a diaphragm 311, a frame 312, and a dome 313. The periphery of the diaphragm 311 is connected to the outer shell 100, and an inner ring hole 3111 is formed in the center of the diaphragm 311. The frame 312 is positioned at the inner ring hole 3111, thereby connecting and fixing the voice coil and the first support plate 340, improving installation stability. Simultaneously, by providing mounting holes 3121 corresponding to the conductive bracket 400 on the frame 312, the first support plate 340 can be easily positioned and installed using the mounting holes 3121, allowing the first support plate 340 to be connected and fixed to the conductive bracket 400 and the frame 312, improving installation convenience.

[0097] Understandably, in order to seal the assembly hole 3121, a dome 313 is provided at the assembly hole 3121, so that the dome 313 covers the assembly hole 3121. This can both seal the assembly hole 3121 and ensure the vibration performance of the diaphragm assembly 310.

[0098] In one embodiment, please refer to Figure 9 The frame 312 is also provided with a connecting flange 3122 extending toward the mounting hole 203 near the mounting hole 3121, and the side of the first support piece 340 away from the conductive support 400 is connected to the connecting flange 3122.

[0099] In this embodiment, by providing a connecting flange 3122 on the frame 312, the connecting flange 3122 extends toward the mounting hole 203, so that the first support piece 340 can be further fixed by the connecting flange 3122, thereby improving the connection stability of the first support piece 340.

[0100] Please refer to the following: Figure 2 , Figure 4 , Figure 7 and Figure 9 The first support plate 340 further includes a transition section 344 that is bent and connected to both the second connecting portion 342 and the first elastic portion 343. The transition section 344 extends along the vibration direction of the diaphragm assembly 310. This allows for a height difference between the second connecting portion 342 and the first elastic portion 343 in the vibration direction of the diaphragm assembly 310, facilitating connection between the first connecting portion 341 and the conductive support 400 on the magnetic circuit system 200. Simultaneously, the transition section 344 allows the second connecting portion 342 and the first elastic portion 343 to be located on different horizontal planes, enabling them to center the vibration system 300 from different positions, thereby improving the vibration stability of the vibration system 300. Alternatively, in other embodiments, a portion of the first elastic portion 343 or the second connecting portion 342 may extend along the vibration direction of the diaphragm assembly 310.

[0101] Specifically, the connecting flange 3122 can be fitted and connected to the transition section 344 of the first support piece 340, thereby facilitating the positioning and assembly of the first support piece 340 and the frame 312, and enabling the frame 312 to provide support for the transition section 344 of the first support piece 340, which is beneficial to improving the structural stability of the first support piece 340.

[0102] Optionally, the connecting flange 3122 is formed by bending or stretching one side of the skeleton 312 adjacent to the mounting hole 3121. For example, the connecting flange 3122 is formed as a vertically extending structure extending from one sidewall of the skeleton 312 adjacent to the mounting hole 3121 along the vibration direction (vertical direction) of the vibration system 300. This configuration can effectively improve the structural strength and processing convenience of the connecting flange 3122. Of course, in other embodiments, the connecting flange 3122 and the skeleton 312 can also be separately configured and connected into an integral structure by welding or bonding, which is not limited here.

[0103] Optionally, multiple connecting flanges 3122 are provided, spaced apart along the periphery of the mounting hole 3121. Each connecting flange 3122 includes two first bosses 3123 protruding towards the inner periphery of the mounting hole 3121, and a second boss 3124 connected between the two first bosses 3123 and protruding towards the outer periphery of the mounting hole 3121. The transition section 344 of the second connecting portion 342 is fitted and connected to the second boss 3124. This helps to improve the structural stability of the connecting flange 3122, thereby enhancing the support capacity of the connecting flange 3122 for the transition section 344. Without loss of generality, two connecting flanges 3122 are provided, respectively corresponding to the major axis direction or the minor axis direction of the magnetic circuit system 200.

[0104] It should be noted that the specific structural design of the connecting flange 3122 is not limited to the situation described above. As long as the installation and fixation of the first support piece 340 can be achieved, the present invention does not impose any specific restrictions on this.

[0105] The present invention also proposes an electronic device including a sound-generating device. The specific structure of the sound-generating device is as described in the above embodiments. Since this electronic device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here. Optionally, the electronic device can be headphones, mobile phones, televisions, computers, tablets, smart wearable devices, etc., and is not limited thereto.

[0106] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A sound producing device, characterized by, The application relates to a loudspeaker, which comprises: a magnetic circuit system provided with a mounting hole, a first magnetic gap and a second magnetic gap arranged in sequence from inside to outside; a conductive support arranged in the mounting hole; and a vibration system comprising a diaphragm assembly, a voice coil assembly and a first support piece, the diaphragm assembly is arranged opposite to the magnetic circuit system, the voice coil assembly comprises a first voice coil and a second voice coil, one end of the first voice coil is fixedly arranged on the diaphragm assembly, and the other end of the first voice coil is arranged corresponding to the first magnetic gap, one end of the second voice coil is fixedly arranged on the diaphragm assembly, and the other end of the second voice coil is arranged corresponding to the second magnetic gap, the first voice coil is connected with the second voice coil through a communication wire, the first voice coil, the communication wire and the second voice coil are formed by winding one wire, one end of the first support piece is connected with the diaphragm assembly and is electrically connected with the voice coil assembly, and the other end of the first support piece is electrically connected with the conductive support. The diaphragm assembly comprises: a diaphragm arranged opposite to the magnetic circuit system, and an inner ring hole arranged in the center of the diaphragm; a framework arranged in the inner ring hole and connected with the diaphragm, the first support piece is connected with the framework, and the framework is provided with an assembly hole corresponding to the conductive support; and a ball top arranged on the assembly hole. The first voice coil and the second voice coil are both connected with the framework. The framework is provided with a connecting flange extending from the edge of the assembly hole towards the inside of the mounting hole, the first support piece comprises a first connecting part, a first elastic part and a second connecting part connected in sequence, the first connecting part is electrically connected with the conductive support, the second connecting part is fixedly arranged on the diaphragm assembly and is electrically connected with the lead wire of the voice coil assembly, a transfer section extending along the vibration direction of the vibration system is arranged between the second connecting part and the first elastic part, and the transfer section is connected with the connecting flange. The magnetic circuit system comprises a magnetic yoke, a center magnetic circuit part, a first side magnetic circuit part and a second side magnetic circuit part arranged on the same side of the magnetic yoke, the first side magnetic circuit part surrounds the center magnetic circuit part and forms the first magnetic gap with the center magnetic circuit part, the second side magnetic circuit part surrounds the first side magnetic circuit part and forms the second magnetic gap with the first side magnetic circuit part, and the mounting hole penetrates the magnetic yoke and the center magnetic circuit part.

2. The sound production device of claim 1, wherein The second voice coil is connected with the first voice coil through one communication wire, two lead wires of the voice coil assembly are arranged on the first voice coil and the second voice coil respectively, and the first support piece is electrically connected with the two lead wires respectively.

3. The sound production device of claim 2, wherein The center magnetic circuit part comprises a center magnet connected with the magnetic yoke and a center vane arranged on one end of the center magnet close to the diaphragm assembly, the surface of the center vane close to the diaphragm assembly is provided with a second avoiding groove corresponding to the second connecting part; and / or 4. The sound production device of claim 3, wherein The first connecting part, the first elastic part and the second connecting part are integrally formed; and / or The first elastic part is provided with at least one bending. The first support piece is provided with a plurality of first support pieces arranged in sequence along the circumference of the conductive support; and / or the plurality of first support pieces are integrally formed.

5. The sound production device of claim 1, wherein ​ 6. The sound production device of claim 1, wherein The main body of the first supporting sheet is made of insulating material, and the insulating material is provided with a conductive circuit, and the voice coil assembly is electrically connected with the conductive support through the conductive circuit.

7. The sound production device of claim 2, wherein The sound production device further comprises a shell connecting the magnetic circuit system and the diaphragm assembly, and the vibration system further comprises a second supporting sheet, a plurality of second supporting sheets are arranged along the circumference of the second voice coil, and the second voice coil is connected with the shell through the second supporting sheet.

8. The sound production device of claim 7, wherein, The second supporting sheet comprises a third connecting portion, a second elastic portion and a fourth connecting portion connected in sequence, the third connecting portion is connected with the second voice coil, and the fourth connecting portion is connected with the shell.

9. The sound production device of claim 8, wherein, The second side magnetic circuit portion is provided with a plurality of avoidance notches communicating with the second magnetic gap, and one second supporting sheet is arranged in one avoidance notch; and / or The third connecting portion, the second elastic portion and the fourth connecting portion are integrally formed; and / or The second elastic portion is provided with at least one bending.

10. The sound production device of claim 7, wherein, The material of the second supporting sheet is one of rubber, elastomer, metal and engineering plastic.

11. An electronic device, comprising: The sound production device comprises the sound production device according to any one of claims 1 to 10.

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