Sound production device and electronic equipment

Abstract

The utility model discloses a sounding device and electronic equipment, the sounding device comprises a magnetic circuit system, a conductive support, a vibration system and a housing, the magnetic circuit system is provided with a mounting hole, a first magnetic gap and a second magnetic gap which are arranged at intervals in sequence from inside to outside, the conductive support is arranged in the mounting hole, and the vibration system is arranged in the housing. The vibration system comprises a diaphragm assembly, a first voice coil, a second voice coil, a first support chip and a second support chip, one end of the first voice coil and one end of the second voice coil are fixedly arranged on the diaphragm assembly, the other end of the first voice coil and the other end of the second voice coil are arranged corresponding to the first magnetic gap and the second magnetic gap respectively, and one end of the first support chip is fixedly arranged on the diaphragm assembly and electrically connected with the first voice coil and the second voice coil. The other end of the first support chip is electrically connected with the conductive support, a plurality of second support chips are arranged at intervals along the circumferential direction of the second voice coil, the shell is connected with the magnetic circuit system and the diaphragm assembly, and the shell is also connected with the second voice coil through the second support chips. According to the technical scheme of the utility model, the operation stability of the vibration system of the sounding device is improved, and the sounding effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic equipment, and in particular 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, making it more difficult to design the corresponding centering structure and thus affecting the centering effect of the centering support. Utility Model Content

[0003] The main purpose of this invention is to provide a sound-generating device that improves the operational stability of the vibration system of the sound-generating device and enhances the sound-generating effect.

[0004] To achieve the above objectives, the sound-generating device proposed in this utility model 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 bracket is disposed in the mounting hole;

[0007] A vibration system includes a diaphragm assembly, a first voice coil, a second voice coil, a first support plate, and a second support plate. The diaphragm assembly is disposed opposite to the magnetic circuit system. 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. One end of the first support plate is fixed to the diaphragm assembly and electrically connected to both the first and second voice coils. The other end of the first support plate is electrically connected to the conductive support. Multiple second support plates are spaced apart along the circumference of the second voice coil.

[0008] The housing connects the magnetic circuit system and the diaphragm assembly, and the housing is also connected to the second voice coil via the second support plate.

[0009] In an embodiment, 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 is arranged around the center magnetic circuit part and forms a first magnetic gap with the center magnetic circuit part, the second side magnetic circuit part is arranged around the first side magnetic circuit part and forms a second magnetic gap with the first side magnetic circuit part, the second side magnetic circuit part is provided with a gap for accommodating the second support, and the mounting hole penetrates through the magnetic yoke and the center magnetic circuit part.

[0010] In an embodiment, the first support 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 wires of the first voice coil and the second voice coil, and the two ends of the first elastic part are connected with the first connecting part and the second connecting part respectively.

[0011] In an embodiment, the second connecting part comprises a first connecting section and a second connecting section, the second connecting section is connected with the first elastic part through the first connecting section, the width of the second connecting section is greater than the width of the first connecting section, the second connecting section is located between the first voice coil and the second voice coil, and the lead wires of the first voice coil and the second voice coil are electrically connected with the second connecting section.

[0012] In an embodiment, the vibration system further comprises a first skeleton, the first voice coil is connected with the diaphragm assembly through the first skeleton, and the surface of the first skeleton close to the diaphragm assembly is provided with a first gap corresponding to the first connecting section.

[0013] In an embodiment, the center magnetic circuit part comprises a center magnet connected with the magnetic yoke and a center vane arranged at one end of the center magnet close to the diaphragm assembly, and the surface of the center vane close to the diaphragm assembly is provided with a second gap corresponding to the first connecting section.

[0014] In an embodiment, the first side magnetic circuit part comprises a first side magnet connected with the magnetic yoke and a first side vane arranged at one end of the first side magnet close to the diaphragm assembly, and the first side vane is provided with a gap corresponding to the second connecting section.

[0015] In an embodiment, the first connecting part, the first elastic part and the second connecting part are integrally formed.

[0016] In an embodiment, the first elastic part is provided with at least one bending.

[0017] In an embodiment, a plurality of the first supporting pieces are provided, and the plurality of the first supporting pieces are arranged at intervals in the circumferential direction of the conductive support.

[0018] In an embodiment, the plurality of the first supporting pieces are integrally formed.

[0019] In an embodiment, the main body of the first supporting piece is made of an insulating material, and a conductive circuit is provided on the insulating material, and the first voice coil and the second voice coil are electrically connected to the conductive support through the conductive circuit.

[0020] In an embodiment, the second side magnetic circuit part is formed in a square structure, the second side magnetic circuit part is provided with the avoidance notches at four corners, and the second supporting pieces are four and are arranged one by one in the corresponding avoidance notches.

[0021] In an embodiment, the first side magnetic circuit part is formed in a closed ring structure, the second side magnetic circuit part includes a plurality of second side magnets arranged at intervals, and the avoidance notches are defined between adjacent second side magnets.

[0022] In an embodiment, the magnetic conductive yoke and the conductive support are integrally injection molded.

[0023] In an embodiment, the second supporting piece includes a third connecting part, a second elastic part, and a fourth connecting part connected in sequence, the third connecting part is connected to the second voice coil, the fourth connecting part is connected to the shell, and the second elastic part is provided with at least one bending.

[0024] In an embodiment, the material of the second supporting piece is an elastomer, a metal, or an engineering plastic.

[0025] In an embodiment, the diaphragm assembly includes:

[0026] a diaphragm, the diaphragm is arranged opposite to the magnetic circuit system, and the diaphragm is provided with an inner ring hole at the center;

[0027] a skeleton, the skeleton is arranged in the inner ring hole and connected to the diaphragm, the first supporting piece is connected to the skeleton, and the skeleton is provided with an assembly hole corresponding to the conductive support; and

[0028] a ball top, the ball top cover is arranged in the assembly hole.

[0029] The first voice coil and the second voice coil are connected to the skeleton.

[0030] In an embodiment, the skeleton is provided with a connecting flange extending from the edge of the assembly hole towards the mounting hole, the first supporting piece comprises a first connecting portion, a first elastic portion and a second connecting portion connected in sequence, the first connecting portion is electrically connected with the conductive supporting piece, the second connecting portion is fixedly arranged on the diaphragm assembly and is electrically connected with the lead wires of the first voice coil and the second voice coil, the two ends of the first elastic portion are connected with the first connecting portion and the second connecting portion respectively, a transition section extending along the vibration direction of the diaphragm assembly is arranged between the second connecting portion and the first elastic portion, and the transition section is connected with the connecting flange in a fit manner.

[0031] The utility model discloses still propose a kind of electronic equipment, including aforementioned sound production device.

[0032] In the utility model technical scheme, by deploying multiple voice coils, the amplitude of vibration system can be increased, so as to improve the loudness of sound production device. The first supporting piece is connected to the conductive supporting piece, the conductive supporting piece is arranged in the magnetic circuit system, and the magnetic circuit system is fixed relative to the shell. The second supporting piece is connected to the second voice coil and the shell, so that the shell and the magnetic circuit system can provide support points for the vibration system. That is, the first supporting piece and the second supporting piece can provide stability maintaining force for the vibration system, preventing the vibration system from shaking and vibrating when performing large amplitude vibration. In addition, since the multiple second supporting pieces are arranged at a circumferential interval, the multiple positions at a circumferential interval on the vibration system can be subjected to the stability maintaining force provided by the second supporting pieces, which is beneficial to ensuring the vibration stability of the vibration system. Furthermore, by arranging the conductive supporting piece in the mounting hole of the magnetic circuit system, the space required for the first supporting piece to be drawn out of the magnetic circuit system can be eliminated, thereby increasing the volume of the magnetic circuit system and improving the product BL value. In addition, since the magnetic leakage of the central position of the magnetic circuit system is serious, the mounting hole needs to be formed by removing at least one central magnet at the central position of the magnetic circuit system. Thus, the magnetic leakage of the central magnet can be reduced, and when the sound production device is assembled in the electronic equipment, the influence of the central magnet in the sound production device on the performance of the electronic equipment due to magnetic leakage can be reduced, thereby meeting the requirement of the electronic equipment on the amount of magnetic leakage. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present utility model, and other drawings can also be obtained according to the structures shown in these drawings without creative labor for those skilled in the art.

[0034] Figure 1 It is an explosion structure schematic view of an embodiment of the sound production device of the present utility model.

[0035] Figure 2Structure schematic view of the sound production device one embodiment of the utility model after removing the diaphragm assembly;

[0036] Figure 3 Structure schematic view of the sound production device one embodiment of the utility model after removing the magnetic yoke;

[0037] Figure 4 Structure schematic view of the bottom (one side of setting up the magnetic yoke) of the sound production device one embodiment of the utility model;

[0038] Figure 5 Structure schematic view of the top (one side of setting up the diaphragm assembly) of the sound production device one embodiment of the utility model;

[0039] Figure 6 Structure schematic view of the sound production device one embodiment of the utility model; Figure 5 Structure schematic view of the section along X-X;

[0040] Figure 7 Structure schematic view of the sound production device one embodiment of the utility model; Figure 6 Enlarged view of the local structure between two broken lines in the structure schematic view of the sound production device one embodiment of the utility model;

[0041] Figure 8 Structure schematic view of the two integrally formed first supporting pieces of the sound production device one embodiment of the utility model;

[0042] Figure 9 Structure schematic view of the first skeleton of the sound production device one embodiment of the utility model;

[0043] Figure 10 Cooperation schematic view of the conductive support and the magnetic yoke of the sound production device one embodiment of the utility model;

[0044] Figure 11 Enlarged view of the local structure of the skeleton of the diaphragm assembly of the sound production device at the assembling hole.

[0045] Explanation of reference numerals:

[0046] 100, shell;

[0047] 200, magnetic circuit system; 201, first magnetic gap; 202, second magnetic gap; 203, mounting hole;

[0048] 210, magnetic yoke;

[0049] 220, center magnetic circuit part; 221, center magnet; 222, center dust shield; 2221, second avoiding groove;

[0050] 230, first edge magnetic circuit part; 231, first edge magnet; 232, first edge dust shield; 2321, avoiding break;

[0051] 240, second edge magnetic circuit part; 241, second edge magnet; 242, second edge vasier; 243, avoiding gap;

[0052] 300, vibration system;

[0053] 310, diaphragm assembly; 311, diaphragm; 3111, inner ring hole; 312, skeleton; 3121, assembly hole; 3122, connecting flange; 3123, first boss; 3124, second boss; 313, ball top;

[0054] 320, first voice coil; 321, first skeleton; 3211, first avoiding groove; 330, second voice coil;

[0055] 340, first supporting sheet; 341, first connecting part; 342, second connecting part; 3421, first connecting section; 3422, second connecting section; 343, first elastic part; 344, adapter section;

[0056] 350, second supporting sheet; 351, third connecting part; 352, fourth connecting part; 353, second elastic part;

[0057] 400, conductive support; 410, main body piece; 420, solder pad.

[0058] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0060] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0061] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0062] The utility model provides a sound production device.

[0063] Refer to Figures 1 to 7 In an embodiment of the utility model, the sound production device comprises:

[0064] The magnetic circuit system 200 is provided with a mounting hole 203, a first magnetic gap 201 and a second magnetic gap 202 which are sequentially and spaced apart from inside to outside;

[0065] The conductive support 400 is arranged in the mounting hole 203;

[0066] The vibration system 300 comprises a diaphragm assembly 310, a first voice coil 320, a second voice coil 330, a first branch 340 and a second branch 350. The diaphragm assembly 310 is arranged opposite to the magnetic circuit system 200. One end of the first voice coil 320 is fixedly arranged on the diaphragm assembly 310, and the other end is arranged corresponding to the first magnetic gap 201. One end of the second voice coil 330 is fixedly arranged on the diaphragm assembly 310, and the other end is arranged corresponding to the second magnetic gap 202. One end of the first branch 340 is fixedly arranged on the diaphragm assembly 310 and is electrically connected with the first voice coil 320 and the second voice coil 330 respectively. The other end of the first branch 340 is electrically connected with the conductive support 400. The second branch 350 is arranged in plurality along the circumferential direction of the second voice coil 330; and

[0067] The shell 100 is connected with the magnetic circuit system 200 and the diaphragm assembly 310. The shell 100 is further connected with the second voice coil 330 through the second branch 350.

[0068] The utility model discloses technical scheme, through the layout multiple voice coil, can increase the amplitude of vibration system 300 to the loudness of the sound production device is promoted. First branch piece 340 is connected to the conductive support 400, and the conductive support 400 is arranged in the magnetic circuit system 200, and the magnetic circuit system 200 is opposite fixed with the shell 100, and the second branch piece 350 is connected in the second voice coil 330 and the shell 100, so that the shell 100 and the magnetic circuit system 200 can provide support point for vibration system 300, that is, the first branch piece 340 and the second branch piece 350 can provide stability for vibration system 300, avoid vibration system 300 when carrying out large amplitude vibration and swing and polarization. And, since multiple second branch pieces 350 are arranged in circumferential interval, the multiple positions of vibration system 300 in circumferential interval distribution can be subjected to the stability provided by the second branch piece 350, which is beneficial to guarantee the vibration stability of vibration system 300. On this basis, the first branch piece 340 is reused as an electrical connection structure, so that the first voice coil 320 and the second voice coil 330 can be electrically connected to the conductive support 400 through the first branch piece 340, thereby realizing electrical connection with an external power supply. This can simplify the structure of the sound production device, facilitate the layout of the internal space of the sound production device, and also help to reduce the size of the sound production device and ensure the miniaturization of the sound production device.

[0069] Moreover, by arranging the conductive support 400 in the mounting hole 203 of the magnetic circuit system 200, the space required for the first branch piece 340 to be drawn out can be eliminated, thereby increasing the volume of the magnetic circuit system 200 and improving the product BL value. In addition, since the central position of the magnetic circuit system 200 has serious magnetic leakage, the mounting hole 203 needs to be formed by removing at least part of the central magnet 221 at the central position of the magnetic circuit system 200, thereby reducing the magnetic leakage of the central magnet 221. When the sound production device is assembled in an electronic device, the influence of the central magnet 221 in the sound production device on the performance of the electronic device due to magnetic leakage can be reduced, thereby meeting the requirements of the electronic device for the amount of magnetic leakage.

[0070] It should be noted that the end of the first voice coil 320 opposite the diaphragm assembly 310 corresponds to the first magnetic gap 201, and the end of the second voice coil 330 opposite the diaphragm assembly 310 corresponds to the second magnetic gap 202. It can be understood that the end of the first voice coil 320 can be inserted into the first magnetic gap 201, and of course, the end of the first voice coil 320 can also be located above the first magnetic gap 201. Similarly, the end of the second voice coil 330 can also be inserted into the second magnetic gap 202, or it can also be located above the second magnetic gap 202.

[0071] In an embodiment, please refer to Figures 1 to 7The magnetic circuit system 200 comprises a magnetic yoke 210, a center magnetic circuit portion 220, a first side magnetic circuit portion 230 and a second side magnetic circuit portion 240 arranged on the same side of the magnetic yoke 210. The first side magnetic circuit portion 230 is arranged around the center magnetic circuit portion 220 and forms a first magnetic gap 201 with the center magnetic circuit portion 220. The second side magnetic circuit portion 240 is arranged around the first side magnetic circuit portion 230 and forms a second magnetic gap 202 with the first side magnetic circuit portion 230. The second side magnetic circuit portion 240 is provided with a clearance gap 243 for accommodating the second lead 350. The mounting hole 203 penetrates the magnetic yoke 210 and the center magnetic circuit portion 220. Without loss of generality, the center magnetic circuit portion 220 comprises a center magnet 221 and a center armature 222. The first side magnetic circuit portion 230 comprises a first side magnet 231 and a first side armature 232. The second side magnetic circuit portion 240 comprises a second side magnet 241 and a second side armature 242.

[0072] In this way, the first side magnetic circuit portion 230 is used as a common magnetic circuit structure of the first magnetic gap 201 and the second magnetic gap 202, which simplifies the structure of the magnetic circuit system 200, reduces the production cost of the sound production device, and is conducive to reducing the radial size of the sound production device. Moreover, since the mounting hole 203 penetrates the magnetic yoke 210 and the center magnetic circuit portion 220, the conductive support 400 can be combined with the magnetic yoke 210, so that the conductive support 400 can form a conductive position inside and outside the sound production device. The conductive position outside is used for electrically connecting an external power supply, and the conductive position inside is used for electrically connecting the first lead 340. Of course, in other embodiments, the first magnetic gap 201 and the second magnetic gap 202 can be respectively constructed by two independent magnetic circuit groups. The center magnetic circuit structure of the second magnetic gap 202 can be stacked on the side magnetic circuit structure of the first magnetic gap 201, which also achieves the purpose of reducing the radial size.

[0073] In this embodiment, the second lead 350 can be accommodated by the clearance gap 243. When the second lead 350 is driven to move in the vibration direction of the vibration system 300, the clearance gap 243 can provide sufficient movement space for the second lead 350, so that the second lead 350 is not interfered, thereby ensuring that the movement of the voice coil and diaphragm assembly 310 is not affected. Specifically, the second side magnet 241 and the second side armature 242 are both provided with the clearance gap 243. In this way, the internal structure of the sound production device can be arranged compactly and without interference. Of course, in other embodiments, the second lead 350 and the magnetic circuit structure can be arranged staggered.

[0074] In an embodiment, please refer to Figures 1 to 8The first branch 340 comprises 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 with the conductive support 400, the second connecting portion 342 is fixedly arranged on the diaphragm assembly 310 and is electrically connected with the lead wires of the first voice coil 320 and the second voice coil 330, and the two ends of the first elastic portion 343 are connected with the first connecting portion 341 and the second connecting portion 342 respectively. In this way, the first connecting portion 341 can provide a stable connecting structure for the conductive support 400, the second connecting portion 342 can provide a stable connecting structure for the lead wires of the first voice coil 320 and the second voice coil 330, the consistency of the movement of the second connecting portion 342, the first voice coil 320, the second voice coil 330 and the diaphragm assembly 310 can be maintained, the first elastic portion 343 has the ability of deformation and recovery, the lateral displacement and unnecessary vibration of the system can be prevented through the first elastic portion 343, and the intelligibility and accuracy of the sound quality can be ensured. Of course, in other embodiments, the first branch 340 can also be provided with three connecting portions, the three connecting portions are in Y shape and are electrically connected with the first voice coil 320, the second voice coil 330 and the conductive support 400 respectively, and the elastic portion is arranged at the junction of the three connecting portions, or the lead wires of the first voice coil 320 and the second voice coil 330 can also be connected on the first connecting portion 341, and the lead wires of the voice coil assembly can be reserved with sufficient length.

[0075] In an embodiment, please refer to Figures 1 to 8The second connecting portion 342 includes a first connecting section 3421 and a second connecting section 3422, the second connecting section 3422 is connected with the first elastic portion 343 through the first connecting section 3421, the width of the second connecting section 3422 is greater than that of the first connecting section 3421, the second connecting section 3422 is located between the first voice coil 320 and the second voice coil 330, and the lead wires of the first voice coil 320 and the second voice coil 330 are electrically connected to the second connecting section 3422. In this way, the second connecting section 3422 can provide a large enough connecting area for the lead wires of the first voice coil 320 and the second voice coil 330, so as to ensure the stability of the electrical connection between the two voice coils and the second connecting section 3422. In addition, the second connecting section 3422 is located between the first voice coil 320 and the second voice coil 330, which can facilitate the electrical connection of the lead wires of the first voice coil 320 and the second voice coil 330. Specifically, the first voice coil 320 leads out the lead wire towards the outer periphery, and the second voice coil 330 leads out the lead wire towards the inner periphery, so that the lead wires of the two voice coils are located between the first voice coil 320 and the second voice coil 330, and can be conveniently and reliably connected to the second connecting section 3422. The width of the first connecting section 3421 can meet the stable connection with the first voice coil 320, the second voice coil 330 and the diaphragm assembly 310, and the width of the first connecting section 3421 can be set smaller, so as to save the material of the first bracket 340, thereby reducing the production cost of the sound production device. Of course, in other embodiments, the first connecting section 3421 and the second connecting section 3422 can also be set to have the same width.

[0076] In the embodiment, the first connecting section 3421 and the second connecting section 3422 are both fixedly arranged on the diaphragm 311, but the present application is not limited thereto, and in other embodiments, only the first connecting section 3421 can be fixedly arranged on the diaphragm 311, or only the second connecting section 3422 can be fixedly arranged on the diaphragm 311.

[0077] In an embodiment, please refer to Figures 1 to 9The vibration system 300 further comprises a first skeleton 321, the first voice coil 320 is connected with the diaphragm assembly 310 through the first skeleton 321, and a surface of the first skeleton 321 close to the diaphragm assembly 310 is provided with a first avoiding groove 3211 corresponding to the first connecting section 3421. In this way, the position of the first voice coil 320 in the first magnetic gap 201 can be adjusted through the first skeleton 321, so that the first voice coil 320 is located in a region with high magnetic field intensity, and the sound generation sensitivity of the sound generation device is improved. By arranging the first avoiding groove 3211, a space for the first connecting section 3421 to pass through is formed between the first skeleton 321 and the diaphragm assembly 310, the first connecting section 3421 passes through the space, and the second connecting part 342 and the diaphragm assembly 310 can be maintained in close contact, so as to ensure the connection stability of the second connecting part 342 and the diaphragm assembly 310, so that the first supporting sheet 340 can stably and effectively provide stability maintaining force for the vibration system 300. Moreover, the above arrangement can also make the assembly structure between the first skeleton 321 and the diaphragm assembly 310 more compact, so as to increase the vibration space of the vibration system. Of course, in other embodiments, the first skeleton 321 can also be provided with an axial through gap at a corresponding position to avoid the first connecting section 3421.

[0078] In an embodiment, please refer to Figure 1 , Figure 2 and Figure 8 , the center magnetic circuit part 220 comprises a center magnet 221 connected with the magnetic yoke 210, and a center dust shield 222 arranged at one end of the center magnet 221 close to the diaphragm assembly 310, and a surface of the center dust shield 222 close to the diaphragm assembly 310 is provided with a second avoiding groove 2221 corresponding to the first connecting section 3421. In this way, the first connecting section 3421 can be avoided through the second avoiding groove 2221, and when the first supporting sheet 340 is driven to move in the vibration direction of the vibration system 300, the second avoiding groove 2221 can provide sufficient movement space for the first connecting section 3421, so that the first supporting sheet 340 is not interfered, thereby ensuring that the movement of the voice coil and the diaphragm assembly 310 is not affected. In this way, the internal structure of the sound generation device can be arranged compactly in the axial direction and does not interfere with each other, which is beneficial to ensure the miniaturization of the sound generation device. Of course, in other embodiments, the distance between the center dust shield 222 and the first connecting section 3421 in the vibration direction of the vibration system 300 can be increased to realize the avoidance of the two.

[0079] In an embodiment, please refer to Figure 1 , Figure 2 and Figure 8The first side magnetic circuit part 230 includes a first side magnet 231 connected with the magnetic conductive yoke 210, and a first side Hawse 232 arranged at one end of the first side magnet 231 close to the diaphragm assembly 310. The first side Hawse 232 is provided with an avoiding gap 2321 corresponding to the second connecting section 3422. In this way, the second connecting section 3422 can be avoided by the avoiding gap 2321. When the first support 340 is driven to move in the vibration direction of the vibration system 300, the avoiding gap 2321 can provide sufficient movement space for the second connecting section 3422, so that the first support 340 is not interfered, thereby ensuring the movement of the voice coil and the diaphragm assembly 310 is not affected. In this way, the internal structure of the sound generating device can be arranged compactly in the axial direction and does not interfere with each other, which is beneficial to ensure the miniaturization of the sound generating device. Of course, in other embodiments, the distance between the first side Hawse 232 and the second connecting section 3422 in the vibration direction of the vibration system 300 can be increased to achieve the avoidance of the two.

[0080] In an embodiment, the first connecting part 341, the first elastic part 343 and the second connecting part 342 are integrally formed. In this way, the structural stability and consistency of the first support 340 can be ensured, and the production, processing and assembly of the first support 340 are facilitated. Of course, in other embodiments, the first connecting part 341, the first elastic part 343 and the second connecting part 342 of the first support 340 can be separately formed and then bonded, welded or clamped together.

[0081] In an embodiment, please refer to Figure 8 The first elastic part 343 is provided with at least one bending. In this way, the first elastic part 343 has a certain deformation ability and a recovery deformation ability, which ensures that the first elastic part 343 can absorb vibration energy in other directions. The bending can be bent in the horizontal direction or in the vibration direction of the vibration system 300. Of course, in other embodiments, the first elastic part 343 can also have other structural forms.

[0082] In an embodiment, please refer to Figures 1 to 8 The first support 340 is provided with a plurality of first supports 340, and the plurality of first supports 340 are arranged in a circumferential direction of the conductive support 400. In this way, the stabilizing effect of the first support 340 on the diaphragm assembly 310 can be improved to ensure the vibration stability of the vibration system 300. At the same time, the electrical connection points of the first support 340 and the two voice coils can be dispersed to avoid excessive heat concentration, which affects the electrical connection stability of the first support 340 and the two voice coils. Of course, in other embodiments, only one first support 340 is provided, and the positions of the first support 340 and the two voice coils are also dispersed.

[0083] Without loss of generality, in the long axis direction of the magnetic circuit system 200, the first branch 340 is symmetrically provided with two first branches, one of the second connecting sections 3422 of the first branch 340 is provided with two first pads and one second pad, and the second connecting section 3422 of the other first branch 340 is provided with one second pad, and the two first pads are respectively electrically connected to the two lead wires of the first voice coil 320, and the two second pads are respectively electrically connected to the two lead wires of the second voice coil 330. The utility model is not limited thereto, and in other embodiments, the two first pads can also be separately provided on the second connecting section 3422 of the two first branches 340, that is, one of the second connecting sections 3422 of the first branch 340 is provided with one first pad and one second pad, and the second connecting section 3422 of the other first branch 340 is also provided with one first pad and one second pad; or, one of the second connecting sections 3422 of the first branch 340 is provided with two first pads, and the second connecting section 3422 of the other first branch 340 is provided with two second pads.

[0084] In an embodiment, the plurality of first branches 340 are integrally formed. In this way, the structural consistency of the plurality of first branches 340 can be improved, and the processing and assembly of the plurality of first branches 340 can be facilitated. Specifically, the first connecting portions 341 of the plurality of first branches 340 are integrally formed, and the conductive support 400 is connected to the integrally formed first connecting portions 341. The first connecting portions 341 are provided with at least two third pads to correspond to the positive and negative connection positions of the conductive support 400. Of course, in other embodiments, the plurality of first branches 340 can be separately formed and independently connected to the conductive support 400.

[0085] In an embodiment, the main body of the first branch 340 is made of an insulating material, and the insulating material is provided with a conductive circuit. The first voice coil 320 and the second voice coil 330 are electrically connected to the conductive support 400 through the conductive circuit. In this way, 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 circuit on the first branch 340, so as to ensure the working performance of the sound generating device. Of course, in other embodiments, the main body of the first branch 340 can be made of a conductive material, and an insulating film layer can be coated on the outer surface of the first branch 340.

[0086] Optionally, the insulating material of the main body of the first supporting sheet 340 is a composite material, which can combine the advantages of multiple materials, so that the main body of the first supporting sheet 340 has sufficient hardness and strength to enable the first supporting sheet 340 to stably and reliably provide the vibration system 300 with a stabilizing force. Specifically, glass fiber reinforced plastic can be used, the base material can be selected from epoxy resin, polyester resin, etc., and the reinforcing material can be selected from glass fiber; carbon fiber reinforced plastic can also be used, the base material is selected from epoxy resin, bismaleimide, etc., and the reinforcing material is selected from carbon fiber; aramid fiber reinforced plastic can also be used, the base material is selected from epoxy resin, phenolic resin, etc., and the reinforcing material is selected from aramid fiber; or glass cloth laminated board can be used, the base material is selected from epoxy resin, and the reinforcing material is selected from glass fiber cloth. Of course, in other embodiments, the insulating material of the main body of the first supporting sheet 340 can also be a single material, such as engineering plastic or rubber material.

[0087] In an embodiment, referring to Figures 1 to 3 , the second edge magnetic circuit part 240 is formed in a square structure, the four corners of the second edge magnetic circuit part 240 are each provided with the avoidance gap 243, and the second supporting sheet 350 is four and is correspondingly arranged in the corresponding avoidance gap 243. In this way, the layout of the internal components of the sound generating device can be facilitated, the components can be compactly matched and do not interfere with each other, which is beneficial to the miniaturization design of the sound generating device; and the four second supporting sheets 350 can uniformly act on the second voice coil 330 in the circumferential direction, thereby ensuring the vibration stability of the vibration system 300. Specifically, the second edge magnet 241 and the second edge dust shield 242 are correspondingly formed with the avoidance gap 243. Of course, in other embodiments, the second edge magnetic circuit can also be a circular ring or a circular ring-like shape.

[0088] In an embodiment, the first edge magnetic circuit part 230 is formed in a closed ring structure, and the second edge magnetic circuit part 240 includes a plurality of second edge magnets 241 arranged at intervals, and the avoidance gap 243 is defined between adjacent second edge magnets 241.

[0089] For the first edge magnetic circuit part 230, the first edge magnet 231 can be arranged in a circumferential continuous structure, or the first edge magnet 231 can be arranged in multiple and discontinuously distributed in the circumferential direction, and arranged in a ring shape. The interval between every two adjacent first edge magnets 231 is small, so that the first edge magnetic circuit part 230 as a whole can have a compact layout in the circumferential direction to form a structure similar to a closed ring, while being controlled to enable the first edge magnet 231 to have a suitable length, facilitating the production and processing of the first edge magnet 231. The gap of the first edge magnet 231 can be sufficient to avoid the first support 340 by the gap of the first edge magnet 232. The space in the circumferential direction can be fully utilized to maximize the volume of the first edge magnet 231 to ensure the magnetic field strength of the first magnetic gap 201 and the second magnetic gap 202, thereby ensuring the sound performance of the sound generating device. Of course, in other embodiments, the interval between the plurality of magnets included in the first edge magnet 231 can be larger, provided that the magnetic field strength of the first edge magnetic circuit part 230 is sufficient.

[0090] For the second edge magnetic circuit part 240, the second edge magnets 241 are distributed differently in the long axis direction and the short axis direction. The second edge magnets 241 in the long axis direction and the short axis direction are arranged with a larger interval to form an avoidance gap 243 at the four corner positions of the second edge magnetic circuit part 240. Further, on each side of the long axis direction, a plurality of second edge magnets 241 arranged in sequence can be correspondingly arranged to enable the second edge magnet 241 to have a suitable length, facilitating the production and processing of the second edge magnet 241. The interval between the plurality of second edge magnets 241 arranged on the same long axis side can be slightly smaller to make the arrangement compact, which is beneficial to ensure the magnetic field strength of the second edge magnetic circuit part 240. Of course, in other embodiments, the first edge magnet 231 can be arranged in a circumferential continuous structure, and the avoidance gap 243 can be formed by recessing the corner position of the surface facing the diaphragm assembly 310 towards the direction of the magnetic yoke 210.

[0091] In an embodiment, the magnetic yoke 210 and the conductive support 400 are integrally injection molded. Specifically, please refer to Figure 7The conductive support 400 comprises a main body 410 connected to the magnetic yoke 210 and a soldering pad 420 embedded in the main body 410. The soldering pad 420 has exposed conductive positions on opposite sides of the magnetic yoke 210. The conductive positions exposed outside the sound production device are used for connecting an external power supply, and the conductive positions exposed inside the sound production device are used for connecting the first connecting part 341. The main body 410 can be made of plastic material, so that the magnetic yoke 210 and the conductive support 400 can be formed by integral injection molding, thereby eliminating the assembly process of the magnetic yoke 210 and the conductive support 400 and improving the connection stability of the magnetic yoke 210 and the conductive support 400. Of course, in other embodiments, the magnetic yoke 210 and the conductive support 400 can be separately formed and then assembled into one body.

[0092] In an embodiment, referring to Figures 1 to 4 , the second supporting sheet 350 comprises a third connecting part 351, a second elastic part 353 and a fourth connecting part 352 connected in sequence. The third connecting part 351 is connected to the second voice coil 330, the fourth connecting part 352 is connected to the shell 100, and the second elastic part 353 is provided with at least one bending. In this way, the second elastic part 353 has a certain deformation ability and a recovery deformation ability, which ensures that the second elastic part 353 can absorb vibration energy in other directions and prevent lateral displacement and unnecessary vibration of the vibration system 300. The bending of the second elastic part 353 can be bent in the horizontal direction or in the vibration direction of the vibration system 300. Of course, in other embodiments, the second supporting sheet 350 can also have other structural forms.

[0093] In an embodiment, the material of the second supporting sheet 350 is one of rubber, elastomer, metal, engineering plastic. The metal can be selected from stainless steel, spring steel or aluminum alloy, the elastomer can be selected from polyurethane, polyester and other materials, and the engineering plastic can be selected from nylon material, polyformaldehyde material, polyimide material and polytetrafluoroethylene material. In this way, the structure stability of the second supporting sheet 350 can be ensured, and the second supporting sheet 350 has sufficient deformation ability and recovery deformation ability, so that the second supporting sheet 350 can stably and reliably provide stability for the vibration system 300. Of course, in other embodiments, the second supporting sheet 350 can also be made of other suitable materials.

[0094] In an embodiment, referring to Figure 1 , Figures 5 to 7 , the diaphragm assembly 310 comprises:

[0095] a diaphragm 311 arranged opposite to the magnetic circuit system 200, and the diaphragm 311 is provided with an inner ring hole 3111 in the center;

[0096] A skeleton 312 is arranged in the inner ring hole 3111 and connected with the diaphragm 311, the first supporting sheet 340 is connected with the skeleton 312, the skeleton 312 is provided with an assembly hole 3121 corresponding to the conductive supporting sheet 400; and

[0097] A ball top 313 is arranged on the assembly hole 3121;

[0098] The first voice coil 320 and the second voice coil 330 are both connected with the skeleton 312.

[0099] In the embodiment, the diaphragm assembly 310 is arranged as a three-part structure of the diaphragm 311, the skeleton 312 and the ball top 313, so that the periphery of the diaphragm 311 is connected with the shell 100, and the inner ring hole 3111 is formed in the center of the diaphragm 311. The skeleton 312 is arranged at the inner ring hole 3111, so that the skeleton 312 is used to realize the connection and fixation of the voice coil and the first supporting sheet 340, and the installation stability is improved. Meanwhile, the assembly hole 3121 is arranged on the skeleton 312 corresponding to the conductive supporting sheet 400, so that the first supporting sheet 340 can be positioned and installed by using the assembly hole 3121, so that the first supporting sheet 340 is fixedly connected with the conductive supporting sheet 400 and the skeleton 312, and the installation convenience is improved.

[0100] It can be understood that, in order to seal the assembly hole 3121, the ball top 313 is arranged at the assembly hole 3121, so that the ball top 313 is arranged on the assembly hole 3121, which can seal the assembly hole 3121 by using the ball top 313, and can also ensure the vibration performance of the diaphragm assembly 310.

[0101] In an embodiment, please refer to Figure 7 and Figure 11 The skeleton 312 is further provided with a connecting flange 3122 extending towards the mounting hole 203 adjacent to the assembly hole 3121, and the side of the first supporting sheet 340 away from the conductive supporting sheet 400 is connected with the connecting flange 3122.

[0102] In the embodiment, the connecting flange 3122 is arranged on the skeleton 312, so that the connecting flange 3122 extends towards the mounting hole 203, so that the first supporting sheet 340 can be further fixed by using the connecting flange 3122, and the connection stability of the first supporting sheet 340 is improved.

[0103] Please refer to Figures 6 to 8The first supporting piece 340 further comprises an adapter section 344 connected with the second connecting section 342 and the first elastic section 343, and the adapter section 344 extends along the vibration direction of the diaphragm assembly 310. In this way, the second connecting section 342 and the first elastic section 343 have a height difference in the vibration direction of the diaphragm assembly 310, which facilitates the connection between the first connecting section 341 and the conductive support 400 on the magnetic circuit system 200. Meanwhile, the adapter section 344 enables the second connecting section 342 and the first elastic section 343 to be located at different levels, and the second connecting section 342 and the first elastic section 343 can function as centering from different positions to the vibration system 300, thereby improving the vibration stability of the vibration system 300. Of course, in other embodiments, part of the first elastic section 343 or the second connecting section 342 can extend along the vibration direction of the diaphragm assembly 310.

[0104] Specifically, the connecting flange 3122 can be connected with the adapter section 344 of the first supporting piece 340, thereby facilitating the positioning and assembly of the first supporting piece 340 and the framework 312, and the framework 312 can provide support for the adapter section 344 of the first supporting piece 340, which is conducive to improving the structural stability of the first supporting piece 340.

[0105] Optionally, the connecting flange 3122 is formed by bending or stretching the side of the framework 312 adjacent to the assembly hole 3121. For example, the connecting flange 3122 is formed as a vertical extension structure extending along the vibration direction (vertical direction) of the vibration system 300 from the side wall of the framework 312 adjacent to the assembly hole 3121, which 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 framework 312 can also be separately arranged and connected as an integrated structure by welding or bonding, which is not limited herein.

[0106] Optionally, the connecting flange 3122 is arranged in a ring shape to facilitate the connection and fixation of the adapter sections 344 of multiple first supporting pieces 340, thereby improving the installation convenience.

[0107] Optionally, the connecting flange 3122 comprises a plurality of connecting flanges 3122, and the plurality of connecting flanges 3122 are arranged along the periphery of the assembly hole 3121. Each connecting flange 3122 comprises two first bosses 3123 protruding towards the inner periphery of the assembly hole 3121, and a second boss 3124 connected between the two first bosses 3123 and protruding towards the outer periphery of the assembly hole 3121, and the adapter section 344 of the second connecting portion 342 is connected to the second boss 3124, so as to improve the structural stability of the connecting flange 3122, thereby enhancing the supporting capacity of the connecting flange 3122 to the adapter section 344. Without loss of generality, the connecting flange 3122 comprises two connecting flanges 3122 arranged in the long axis direction or the short axis direction of the magnetic circuit system 200.

[0108] It should be noted that the specific structural design of the connecting flange 3122 is not limited to the above description, as long as the mounting and fixing of the first supporting sheet 340 can be achieved, and the present application does not make specific limitations thereto.

[0109] The utility model also proposes an electronic equipment, the electronic equipment includes sounding device, the specific structure of the sounding device refers to the above embodiment, because the electronic equipment adopts all technical schemes of the above all embodiments, therefore at least has all beneficial effects brought by the technical scheme of the above embodiment, does not repeat here one by one. Optionally, the electronic equipment can be earphone, mobile phone, television, computer, Pad, smart wearable device and the like, which is not limited here.

[0110] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made under the inventive concept of the utility model, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

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; a vibration system comprising a diaphragm assembly, a first voice coil, a second voice coil, a first support piece and a second support piece, the diaphragm assembly being arranged opposite to the magnetic circuit system, one end of the first voice coil being fixedly arranged on the diaphragm assembly and the other end being arranged corresponding to the first magnetic gap, one end of the second voice coil being fixedly arranged on the diaphragm assembly and the other end being arranged corresponding to the second magnetic gap, one end of the first support piece being fixedly arranged on the diaphragm assembly and being electrically connected with the first voice coil and the second voice coil respectively, the other end of the first support piece being electrically connected with the conductive support, and a plurality of second support pieces being arranged in sequence along the circumferential direction of the second voice coil; and a shell connected with the magnetic circuit system and the diaphragm assembly, and further connected with the second voice coil through the second support pieces.

2. The sound production device of claim 1, wherein The magnetic circuit system comprises a magnetic yoke, a central 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 is arranged around the central magnetic circuit part and forms the first magnetic gap with the central magnetic circuit part, the second side magnetic circuit part is arranged around the first side magnetic circuit part and forms the second magnetic gap with the first side magnetic circuit part, the second side magnetic circuit part is provided with a gap for accommodating the second support piece, and the mounting hole penetrates through the magnetic yoke and the central magnetic circuit part.

3. The sound production device of claim 2, wherein 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 wires of the first voice coil and the second voice coil, and the two ends of the first elastic part are connected with the first connecting part and the second connecting part respectively.

4. The sound production device of claim 3, wherein The second connecting part comprises a first connecting section and a second connecting section, the second connecting section is connected with the first elastic part through the first connecting section, the width of the second connecting section is greater than that of the first connecting section, the second connecting section is located between the first voice coil and the second voice coil, and the lead wires of the first voice coil and the second voice coil are electrically connected with the second connecting section.

5. The sound production device of claim 4, wherein, The vibration system further comprises a first skeleton, the first voice coil is connected with the diaphragm assembly through the first skeleton, and the surface of the first skeleton close to the diaphragm assembly is provided with a first gap corresponding to the first connecting section; and / or The central magnetic circuit part comprises a central magnet connected with the magnetic yoke and a central vane arranged on one end of the central magnet close to the diaphragm assembly, the surface of the central vane close to the diaphragm assembly is provided with a second gap corresponding to the first connecting section; and / or The first side magnetic circuit part comprises a first side magnet connected with the magnetic yoke and a first side vane arranged on one end of the first side magnet close to the diaphragm assembly, the first side vane is provided with a gap corresponding to the second connecting section; and / or 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.

6. The sound production device of claim 1, wherein The first supporting piece is provided with a plurality of first supporting pieces which are arranged along the circumference of the conductive support. The first supporting piece is provided with a plurality of first supporting pieces which are arranged along the circumference of the conductive support. The main body of the first supporting piece is made of an insulating material, and the insulating material is provided with a conductive circuit, and the first voice coil and the second voice coil are electrically connected to the conductive support through the conductive circuit.

7. The sound production device of claim 2, wherein The second side magnetic circuit part is formed in a square structure, and the four corners of the second side magnetic circuit part are provided with the avoiding notches, and the second supporting piece is four and is arranged in the corresponding avoiding notches one by one. The first side magnetic circuit part is formed in a closed ring structure, and the second side magnetic circuit part includes a plurality of second side magnets arranged at intervals, and the avoiding notches are defined between adjacent second side magnets. The magnetic yoke and the conductive support are integrally injection molded. The second supporting piece includes a third connecting part, a second elastic part and a fourth connecting part connected in sequence, the third connecting part is connected with the second voice coil, the fourth connecting part is connected with the shell, and the second elastic part is provided with at least one bending.

8. The sound production device of claim 1, wherein, The material of the second supporting piece is one of rubber, elastomer, metal and engineering plastic.

9. The sound production device of any one of claims 1 to 8, wherein, The diaphragm assembly includes: A diaphragm is arranged opposite to the magnetic circuit system, and the center of the diaphragm is provided with an inner ring hole; A skeleton is arranged in the inner ring hole and connected with the diaphragm, the first supporting piece is connected with the skeleton, and the skeleton is provided with an assembly hole corresponding to the conductive support; and A ball top cover is arranged in the assembly hole. The first voice coil and the second voice coil are connected with the skeleton.

10. The sound production device of claim 9, wherein, The skeleton is provided with a connecting flange extending from the edge of the assembly hole towards the mounting hole, the first supporting piece includes 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 in the diaphragm assembly and is electrically connected with the lead wires of the first voice coil and the second voice coil, the two ends of the first elastic part are connected with the first connecting part and the second connecting part respectively, the second connecting part and the first elastic part are provided with a transition section extending along the vibration direction of the diaphragm assembly, and the transition section is connected with the connecting flange.

11. An electronic device, comprising: The sound generating device includes the diaphragm assembly.

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