Vibration system and sound module

Abstract

The present invention discloses a vibration system and a sound-generating module, wherein the vibration system comprises a first frame, a first diaphragm, a first voice coil and a centering support, wherein the first diaphragm is arranged on the first frame; one end of the first voice coil is arranged on a surface of the first diaphragm, and the other end is extended in a direction away from the first diaphragm; the centering support is arranged on the first frame and connected to the end of the first voice coil away from the first diaphragm; wherein the centering support is made of insulating material, the first diaphragm comprises a first membrane body and a first conductive circuit integrally formed with the first membrane body, one end of the first conductive circuit is electrically connected to the first voice coil, and the other end is used to electrically connect to an external circuit board. The technical solution of the present invention can improve the convenience of assembling the vibration system, while ensuring that the magnetic circuit system of the generating module has a strong magnetic performance.

Description

Technical Field

[0001] The present invention relates to the technical field of electroacoustic transducer, and in particular to a vibration system and a sound generating module using the vibration system. Background Art

[0002] The vibration system of the sound module in the related art usually includes a diaphragm, a voice coil combined with one side of the diaphragm, and a centering support plate that supports and centers the diaphragm. At the same time, the centering support plate is also used to electrically connect the voice coil and the external circuit board. At this time, because the centering support plate not only supports and centers the voice coil, but also has to electrically conduct it, a conductor needs to be set inside the centering support plate. And in order to avoid the conductor from breaking when the centering support plate follows the movement of the voice coil, the volume of the centering support plate is usually set very large. At this time, the large-volume centering support plate will increase the occupation of the installation space and make the installation more difficult, which will affect the assembly of the vibration system. At the same time, the large-volume centering support plate will also require the magnetic circuit system of the sound module to open a very large avoidance space, which will affect the magnetic performance of the magnetic circuit system. Summary of the invention

[0003] The main purpose of the present invention is to provide a vibration system, aiming to improve the convenience of assembling the vibration system, while ensuring that the magnetic circuit system of the generating module has strong magnetic performance.

[0004] To achieve the above object, the vibration system proposed by the present invention comprises:

[0005] The first frame;

[0006] A first diaphragm, wherein the first diaphragm is disposed on the first frame;

[0007] a first voice coil, wherein one end of the first voice coil is disposed on a surface of the first diaphragm, and the other end of the first voice coil is extended in a direction away from the first diaphragm; and

[0008] A centering support plate, the centering support plate is arranged on the first frame and connected to an end of the first voice coil away from the first diaphragm;

[0009] Among them, the centering support plate is made of insulating material, the first diaphragm includes a first membrane body and a first conductive circuit integrally formed with the first membrane body, one end of the first conductive circuit is electrically connected to the first voice coil, and the other end is used to electrically connect to an external circuit board.

[0010] Optionally, the number of the centering support plates is two, and the two centering support plates are respectively arranged on two short axis sides of the first frame;

[0011] Alternatively, the number of the centering support plates is four, and the four centering support plates are respectively arranged at four corners of the first frame.

[0012] Optionally, the centering support piece includes:

[0013] A first connecting piece, the first connecting piece is connected to the first frame;

[0014] a second connecting plate, the second connecting plate being connected to the first voice coil; and

[0015] The middle extending piece is bent at least once to form a curved structure, and two ends of the middle extending piece are respectively connected to the first connecting piece and the second connecting piece.

[0016] Optionally, the width of the middle extension piece is smaller than the width of the first connecting piece and the width of the second connecting piece;

[0017] And / or, the first connecting piece is arranged in a square structure, and the second connecting piece is arranged in an arc structure;

[0018] And / or, the first connecting piece, the second connecting piece and the middle extending piece are located on the same plane;

[0019] And / or, the first connecting piece, the second connecting piece and the middle extending piece are arranged in an integrated structure.

[0020] Optionally, the centering support is connected to a surface of the first voice coil facing away from the first diaphragm;

[0021] And / or, the centering support sheet and the first frame are bonded and fixed;

[0022] And / or, the centering support plate and the first voice coil are bonded and fixed.

[0023] Optionally, the thickness of the centering support sheet is greater than or equal to 50 μm and less than or equal to 150 μm.

[0024] Optionally, the centering support sheet is made of polyimide, polyethylene naphthalate, polyethylene terephthalate, polyetheretherketone or liquid crystal polymer.

[0025] Optionally, the centering support sheet includes at least two main body layers and at least one adhesive layer, the at least two main body layers are stacked in sequence and spaced apart, and one adhesive layer is provided between each two adjacent main body layers;

[0026] The material of the main layer is polyimide, polyethylene naphthalate, polyethylene terephthalate, polyetheretherketone or liquid crystal polymer, and the material of the adhesive layer is acrylic pressure-sensitive adhesive, silicone pressure-sensitive adhesive or polyurethane pressure-sensitive adhesive.

[0027] Optionally, the first voice coil has two first leads, the two first leads are led out from two corners of the first voice coil on one side corresponding to the external circuit board; the first conductive circuit includes an electrically insulated first circuit portion and a second circuit portion, the first circuit portion and the second circuit portion are electrically connected to the two first leads respectively, and the other ends extend to two corners of the first membrane body respectively, and are used to be electrically connected to the external circuit board;

[0028] Alternatively, the external circuit board is arranged on the long axis side or the short axis side of the vibration system, and the first voice coil has two first leads, which are respectively led out from the two opposite short axes or long axes, and extend to the edges of the first membrane body respectively, and then extend from the edge of the first membrane body to one side of the external circuit board, and are used to be electrically connected to the external circuit board.

[0029] The present invention also provides a sound module, comprising:

[0030] Magnetic circuit system;

[0031] A first vibration system, the first vibration system is provided at one side of the magnetic circuit system, the first vibration system is the vibration system as described above; and

[0032] An external circuit board, wherein one end of the first conductive circuit away from the first voice coil is electrically connected to the external circuit board.

[0033] Optionally, the sound module further includes a second vibration system, which is arranged on a side of the magnetic circuit system away from the first vibration system, and a positive projection area of ​​the second vibration system is smaller than a projection area of ​​the first vibration system;

[0034] The second vibration system includes a second diaphragm and a second voice coil, the second diaphragm includes a second membrane body and a second conductive circuit integrally formed with the second membrane body, one end of the second conductive circuit is electrically connected to the second voice coil, and the other end and the first conductive circuit are electrically connected to the same external circuit board, and the external circuit board is arranged on one side of the first vibration system, or on one side of the second vibration system.

[0035] Optionally, the second voice coil has two second leads, and the two second leads are respectively extended from a side of the second voice coil corresponding to the external circuit board and a side away from the external circuit board;

[0036] The second conductive circuit includes a third circuit portion and a fourth circuit portion, one end of the third circuit portion is electrically connected to one of the second leads, and the other end is electrically connected to the external circuit board, one end of the fourth circuit portion is electrically connected to another of the second lead, and the other end extends to the edge of the second film body, and then leads out from the edge of the second film body to one side of the external circuit board and is electrically connected to the external circuit board.

[0037] Optionally, a support portion is formed at a corner of the first frame, and the support portion extends to one side of the second vibration system;

[0038] Two conductive inserts are embedded on the supporting portion of the first frame, one end of the two conductive inserts is electrically connected to the first circuit portion and the second circuit portion of the first conductive circuit respectively, and the other end is electrically connected to the external circuit board.

[0039] The first diaphragm of the vibration system of the technical solution of the present invention includes a first membrane body and a first conductive circuit integrally formed with the first membrane body, so that the first voice coil in the vibration system can be electrically connected to the external circuit board through the first conductive circuit on the first diaphragm. In other words, the first diaphragm of the vibration system in this solution has conductive properties and can be directly used to electrically connect the first voice coil and the external circuit board. At this time, the centering support plate in the vibration system can be made of insulating material so that it only has a supporting and centering effect on the first voice coil. Compared with the conductive centering support plate of the vibration system in the prior art, it not only plays a supporting and centering role, but also plays an electrical conduction role, so that a conductor needs to be set inside the conductive centering support plate, and in order to avoid the conductor from breaking when the conductive centering support plate follows the movement of the voice coil, the volume of the conductive centering support plate needs to be set very large. Because the function of electrically connecting the voice coil and the external circuit board is transferred from the centering support to the first diaphragm, there is no need to set a conductive conductor inside the centering support, and there is no need to set the volume of the centering support very large in order to avoid the conductor from breaking when the centering support follows the movement of the voice coil. That is, the volume of the centering support of the vibration system in this solution can be set very small, which greatly reduces its space occupation, thereby facilitating the assembly convenience of the vibration system. At the same time, since the centering support in this solution does not need to meet the support and centering function of the voice coil and the electrical conduction function like the conductive centering support of the vibration system in the prior art, the centering support in this solution has a very large degree of freedom in terms of material selection, processing technology, etc., which is conducive to improving the convenience of processing and forming of the centering support and reducing manufacturing costs.

[0040] In addition, when the volume of the centering support plate in the present solution is set to be relatively small, the magnetic circuit system of the subsequent sound module can also open a very small avoidance space corresponding to the very small centering support plate, so as to avoid a significant reduction in the magnetic circuit performance of the magnetic circuit system due to the avoidance space being set too large, thereby ensuring that the magnetic circuit system has a stronger magnetic performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0042] Figure 1 This is a perspective diagram of an embodiment of a sound module of the present invention;

[0043] Figure 2 for Figure 1 Another perspective diagram of the sound module;

[0044] Figure 3 for Figure 1 A cross-sectional schematic diagram of the middle sound module;

[0045] Figure 4 A partial structural diagram of an embodiment of the sound module;

[0046] Figure 5 for Figure 4 A schematic diagram of a partial explosion structure of the sound module;

[0047] Figure 6 for Figure 5 A schematic diagram of a partial explosion structure of the sound module;

[0048] Figure 7 for Figure 6 A schematic diagram of a partial explosion structure of the sound module;

[0049] Figure 8 for Figure 5 Another partial explosion structure diagram of the sound module;

[0050] Fig. 9 for Figure 8 A schematic diagram of a first vibration system from one perspective;

[0051] Fig.10 Fig. 9 Another perspective diagram of the first vibration system;

[0052] Fig.11 for Figure 5 A schematic diagram of a second vibration system of the middle sound module from one perspective;

[0053] Fig.12 for Figure 5 A schematic diagram of the second vibration system of the middle sound module from another perspective;

[0054] Description of Figure Numbers:

[0055]

[0056] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0061] Please refer to Figures 1 to 7 The present invention provides a vibration system. In one embodiment of the present invention, the vibration system includes a first frame 11, a first diaphragm 13, a first voice coil 15 and a centering support 17. The first diaphragm 13 is arranged on the first frame 11; one end of the first voice coil 15 is arranged on a surface of the first diaphragm 13, and the other end is extended in a direction away from the first diaphragm 13; the centering support 17 is arranged on the first frame 11 and connected to the end of the first voice coil 15 away from the first diaphragm 13; wherein the centering support 17 is made of insulating material, the first diaphragm 13 includes a first membrane body 131 and a first conductive circuit 133 integrally formed with the first membrane body 131, one end of the first conductive circuit 133 is electrically connected to the first voice coil 15, and the other end is used to electrically connect to the external circuit board 50.

[0062] In one embodiment of the present invention, the first frame 11 can be used to improve the installation position to install and fix the first diaphragm 13. The first frame 11 can be an annular structure so that the edges of the first diaphragm 13 can be connected to the first frame 11 in the circumferential direction, which is conducive to improving the stability of the first diaphragm 13 being installed and fixed on the first frame 11, so as to achieve subsequent stable vibration and sound generation. Of course, the present application is not limited to this. In other embodiments, the first frame 11 can also be a cover structure with an opening at one end, so that a sound channel that serves as a guide group for the sound emitted by the first diaphragm 13 can be directly opened at the end of the first frame 11 away from the opening. The first membrane body 131 of the first diaphragm 13 can be the main body structure of the first diaphragm 13, and the first conductive circuit 133 integrally formed with the first membrane body 131 can be used to play a conductive role, so as to electrically conduct the first voice coil 15 connected to the first diaphragm 13 and the external circuit board 50. Among them, it should be noted that the first conductive circuit 133 and the first membrane body 131 are integrally formed, that is, the two are arranged in an integral manner, and the specific formation method can be to print or coat the first conductive circuit 133 on the first membrane body 131. The present application does not specifically limit the process of forming the two, and it is sufficient to ensure that the two can form an integral structure. The first conductive circuit 133 can be made of a material with conductive properties to ensure that it can be used as a conductive layer on the first membrane body 131. The first conductive circuit 133 and the first membrane body 131 are arranged in an integral manner, so that the first conductive circuit 133 can be stably arranged on the first membrane body 131, and the first voice coil 15 can be stably conductive, and at the same time, it does not cause additional occupation of space. The centering support 17 can only be used to support and center the first voice coil 15, so as to reduce the possibility of the first voice coil 15 generating bad vibrations, and ensure that it only moves along the axial direction of the first voice coil 15, so as to ensure the subsequent vibration and sound effect of the first diaphragm 13.

[0063] The first diaphragm 13 of the vibration system of the technical solution of the present invention includes a first membrane body 131 and a first conductive circuit 133 integrally formed with the first membrane body 131, so that the first voice coil 15 in the vibration system can be electrically connected to the external circuit board 50 through the first conductive circuit 133 on the first diaphragm 13. In other words, the first diaphragm 13 of the vibration system in this solution has conductive properties and can be directly used to electrically conduct the first voice coil 15 and the external circuit board 50. At this time, the centering support 17 in the vibration system can be made of insulating material, so that it only has a supporting and centering function for the first voice coil 15. Compared with the conductive centering support 17 of the vibration system in the prior art, it is necessary to set a conductor inside the conductive centering support 17 while playing a supporting and centering role, and in order to avoid the conductor from breaking when the conductive centering support 17 follows the movement of the voice coil, the volume of the conductive centering support 17 needs to be set very large. Because the function of electrically connecting the voice coil and the external circuit board 50 is transferred from the centering support 17 to the first diaphragm 13, there is no need to set a conductive conductor inside the centering support 17, and there is no need to set the volume of the centering support 17 very large in order to avoid the conductor from breaking when the centering support 17 follows the movement of the voice coil. That is, the volume of the centering support 17 of the vibration system in this solution can be set very small, which greatly reduces its space occupation, thereby facilitating the assembly convenience of the vibration system. At the same time, since the centering support 17 in this solution does not need to meet the support and centering function of the voice coil and the electrical conduction function of the conductive centering support 17 of the vibration system in the prior art, the centering support 17 in this solution has a very large degree of freedom in terms of material selection, processing technology, etc., which is conducive to improving the convenience of processing and molding of the centering support 17 and reducing manufacturing costs.

[0064] In addition, when the volume of the centering support plate 17 in the present embodiment is set to be relatively small, the magnetic circuit system 30 of the subsequent sound module 100 can also open a very small avoidance space corresponding to the very small centering support plate 17, so as to avoid a significant reduction in the magnetic circuit performance of the magnetic circuit system 30 due to the avoidance space being set too large, thereby ensuring that the magnetic circuit system 30 has a stronger magnetic performance, so that it can subsequently have a stronger driving force on the first diaphragm 13 to ensure the vibration and sound effect of the first diaphragm 13.

[0065] In one embodiment of the present invention, the number of the centering support pieces 17 is two, and the two centering support pieces 17 are respectively disposed on two short-axis sides of the first frame 11 .

[0066] It can be understood that the provision of two centering supports 17 makes the number of centering supports 17 used relatively small, thereby further simplifying the structure of the vibration system, so as to improve the convenience of assembly and reduce the manufacturing cost. Furthermore, the two centering supports 17 are respectively provided on the two short axis sides of the first frame 11, so that the distance between the two centering supports 17 can be relatively small, so that the two ends of the first voice coil 15 on the short axis can be stably supported. Moreover, since the magnets located on the two short axis sides in the magnetic circuit system 30 of the sound module 100 are usually arranged to be relatively longer than the magnets on the two long axes. Therefore, when the two centering supports 17 are respectively provided on the two short axis sides, even if the magnets located on the two short axis sides have an avoidance space for the centering support 17 in the middle, since the magnets themselves are relatively long and have a strong magnetic capacity, when a certain avoidance space is provided, the magnets on the two short axes still have a strong magnetic performance. Of course, it should be noted that the present application is not limited to this. In one embodiment of the present invention, please refer to Figure 6 and Figure 7 , there are four centering supports 17, and the four centering supports 17 are respectively arranged at the four corners of the first frame 11. At this time, the arrangement of the four centering supports 17, which are respectively arranged at the four corners of the first frame 11, can provide uniform support and centering for the first voice coil 15 in the circumferential direction, thereby facilitating a significant improvement in the effect of suppressing undesirable vibrations of the first voice coil 15.

[0067] Please refer to Figure 5 In one embodiment of the present invention, the centering support plate 17 includes a first connecting plate 171, a second connecting plate 173 and an intermediate extending plate 175, wherein the first connecting plate 171 is connected to the first frame 11; the second connecting plate 173 is connected to the first voice coil 15; the intermediate extending plate 175 is bent at least once to form a curved structure, and the two ends of the intermediate extending plate 175 are respectively connected to the first connecting plate 171 and the second connecting plate 173.

[0068] It can be understood that the middle extension piece 175 of the centering support piece 17 is set as a curved structure, so that the centering support piece 17 can have good elasticity to follow the vibration of the first voice coil 15 to move. At the same time, such a setting can also extend the overall length of the centering support piece 17 within a limited installation space, so that it has a larger adaptive vibration stroke in the process of following the vibration of the first voice coil 15, avoiding the obstruction of the vibration of the first diaphragm 13 due to the small vibration stroke of the centering support piece 17 and affecting the final sound effect. Among them, the middle extension piece 175 can be bent once, twice or more times. Further, in order to further improve the elastic deformation effect of the centering support piece 17 and the stability of the connection with the first frame 11 and the first voice coil 15. In one embodiment of the present invention, the width of the middle extension piece 175 can be smaller than the width of the first connecting piece 171 and the width of the second connecting piece 173. In this way, when the centering support 17 follows the first voice coil 15 to vibrate, the middle extension piece 175 with a relatively small width can be better deformed by vibration. The widths of the first connecting piece 171 and the second connecting piece 173 are relatively large, so that the centering support 17 has a larger connection contact area, which is conducive to improving the convenience of installation and the stability of connection of the centering support 17. Furthermore, in one embodiment, the first connecting piece 171 is arranged in a square structure. At this time, the shape of the first connecting piece 171 is relatively regular, and it can be well adapted to the shape of the connecting surface connected to it on the first frame 11, which is conducive to further improving the convenience and stability of the connection between the centering support 17 and the first frame 11. The second connecting piece 173 can be arranged in an arc structure. In this way, when the four centering support pieces 17 are respectively arranged in the four corners of the first frame 11, they can be adapted to the shape of the corners of the arc transition of the first voice coil 15, which is also conducive to further improving the convenience and stability of the connection between the centering support 17 and the first voice coil 15. Of course, it should be noted that the present application is not limited thereto, and in other embodiments, the centering support piece 17 may also be an arc-shaped sheet structure or a linear sheet structure with the same width.

[0069] In one embodiment of the present invention, the first connecting piece 171 , the second connecting piece 173 and the middle extending piece 175 are located on the same plane.

[0070] It can be understood that the first connecting piece 171, the second connecting piece 173 and the middle extending piece 175 are arranged in the same plane, which can make the shape of the centering support piece 17 more regular, and at this time can greatly simplify its processing technology, thereby facilitating further improving its processing convenience.

[0071] In one embodiment of the present invention, the first connecting piece 171 , the second connecting piece 173 and the middle extending piece 175 are provided in an integrated structure.

[0072] It can be understood that the first connecting piece 171, the second connecting piece 173 and the middle extending piece 175 are integrally arranged, so that the strength of the connecting parts can be enhanced, so as to enhance the overall strength of the centering support piece 17 and ensure the service life. At the same time, such an arrangement also allows the first connecting piece 171, the second connecting piece 173 and the middle extending piece 175 to be manufactured by integral molding, so as to simplify the processing technology and improve the production efficiency.

[0073] Please refer to Figure 7 In one embodiment of the present invention, the centering support 17 is connected to the surface of the first voice coil 15 facing away from the first diaphragm 13 .

[0074] It can be understood that the first membrane body 131 of the first diaphragm 13 is connected to one surface of the first voice coil 15. Therefore, by connecting the centering support plate 17 to the other opposite surface of the first voice coil 15, the first voice coil 15 can be supported and limited at both ends opposite to each other in the axial direction, so that the first voice coil 15 can be supported and centered more stably, thereby improving the suppression of adverse vibrations of the first voice coil 15.

[0075] In one embodiment of the present invention, the centering support piece 17 and the first frame body 11 are fixedly bonded.

[0076] It can be understood that the centering support piece 17 and the first frame 11 are bonded and fixed, so that there is no need to set an additional connection structure on the centering support piece 17 and the first frame 11, and they can be directly bonded, which is conducive to ensuring that the structural strength of the centering support piece 17 and the first frame 11 itself is not easily damaged. Of course, it should be noted that the present application is not limited to this. In other implementations, the centering support piece 17 and the first frame 11 can also be fixed by screws, etc.

[0077] Similarly, in order to facilitate the connection between the centering support 17 and the first voice coil 15, in an embodiment of the present invention, the centering support 17 and the first voice coil 15 may also be bonded and fixed.

[0078] In one embodiment of the present invention, the thickness of the centering arm 17 is greater than or equal to 50 μm and less than or equal to 150 μm.

[0079] It can be understood that when the thickness of the centering support 17 is less than 50 μm, the centering support 17 is likely to be too thin and relatively weak in strength, which in turn causes easy deformation and affects the supporting and positioning function of the first voice coil 15. When the thickness of the centering support 17 is greater than 150 μm, the centering support 17 is likely to be too thick and too strong to be easily deformed, which may hinder the vibration of the first voice coil 15 when following the vibration of the first voice coil 15. Therefore, the thickness of the centering support 17 in this solution is set to be greater than or equal to 50 μm and less than or equal to 150 μm, so as to ensure that the centering support 17 has a good supporting and centering effect on the first voice coil 15, and can also follow the movement of the first voice coil 15 more smoothly. The thickness of the centering support piece 17 may be 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm, etc., and may be any value within the above range.

[0080] In an embodiment of the present invention, the centering support plate 17 is made of polyimide, polyethylene naphthalate, polyethylene terephthalate, polyetheretherketone or liquid crystal polymer.

[0081] It can be understood that such a configuration can make the centering support plate 17 have good toughness, strength and elasticity, so that the centering support plate 17 can follow the first voice coil 15 to have good adaptive vibration and is not easy to be damaged. At this time, the centering support plate 17 can be said to be a single-layer structure. In another embodiment of the present invention, the centering support plate 17 can also be a multi-layer structure, which may include at least two main layers and at least one adhesive layer, at least two main layers are stacked in sequence, and an adhesive layer is provided between each adjacent two main layers. Among them, the material of the main layer is polyimide, polyethylene naphthalate, polyethylene terephthalate, polyetheretherketone or liquid crystal polymer, and the material of the adhesive layer is acrylic pressure-sensitive adhesive, silicone pressure-sensitive adhesive or polyurethane pressure-sensitive adhesive. At this time, the adhesive layer can increase the damping effect of the centering support plate 17 and better support and center the first voice coil 15. At the same time, such an arrangement also allows a composite structure to be formed by matching layer structures of different materials, thereby facilitating the centering support piece 17 to combine the excellent properties of different materials.

[0082] Please refer to Figure 5 , Figure 8 , Fig. 9 as well as Fig.10In one embodiment of the present invention, the first voice coil 15 has two first leads 151, and the two first leads 151 are led out from two corners of the first voice coil 15 on one side corresponding to the external circuit board 50; the first conductive circuit 133 includes an electrically insulating first circuit portion 135 and a second circuit portion 137, and the first circuit portion 135 and the second circuit portion 137 are respectively electrically connected to the two first leads 151, and the other ends extend to the two corner areas of the first membrane body 131, and are used to be electrically connected to the external circuit board 50.

[0083] It can be understood that extending and arranging the first circuit portion 135 and the second circuit portion 137 at the two corner portions corresponding to the first voice coil 15 and the first diaphragm 13 can make the wiring path required for the first circuit portion 135 and the second circuit portion 137 shorter, thereby helping to reduce the manufacturing cost. Of course, the present application is not limited thereto. In other embodiments, when the external circuit board 50 is arranged on the long axis side or the short axis side of the vibration system, the two first leads 151 of the first voice coil 15 are correspondingly led out from the two opposite short axes or the long axis, and respectively extend to the edge of the first membrane body 131, and then extend from the edge of the first membrane body 131 to one side of the external circuit board 50, and are used to be electrically connected to the external circuit board 50. That is, when the external circuit board 50 is arranged on the long axis of the vibration system, the first lead 151 can be correspondingly led out from the two opposite short axes, and respectively extend to the edge of the first membrane body 131, and then extend from the edge of the first membrane body 131 to one side of the external circuit board 50, and be electrically connected to the external circuit board 50. When the external circuit board 50 is set on the short axis of the vibration system, the first lead 151 is correspondingly led out from the two opposite long axes, and extends to the edges of the first membrane body 131 respectively, and then extends from the edge of the first membrane body 131 to one side of the external circuit board 50, and is electrically connected to the external circuit board 50.

[0084] Please refer to Figures 1 to 3 The present invention also proposes a sound module 100, which includes a magnetic circuit system 30, a first vibration system 10 and an external circuit board 50. The specific structure of the first vibration system 10 refers to the above embodiment. Since the sound module 100 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the first vibration system 10 is arranged on one side of the magnetic circuit system 30, and the end of the first conductive line 133 away from the first voice coil 15 is electrically connected to the external circuit board 50.

[0085] Please refer to Figure 3In one embodiment of the present invention, the sound module 100 also includes a second vibration system 70, which is arranged on the side of the magnetic circuit system 30 away from the first vibration system 10, and the positive projection area of ​​the second vibration system 70 is smaller than the projection area of ​​the first vibration system 10; the second vibration system 70 includes a second diaphragm 71 and a second voice coil 73, the second diaphragm 71 includes a second membrane body 711 and a second conductive circuit 713 integrally formed with the second membrane body 711, one end of the second conductive circuit 713 is electrically connected to the second voice coil 73, and the other end and the first conductive circuit 133 are electrically connected to the same external circuit board 50, and the external circuit board 50 is arranged on one side of the first vibration system 10, or on one side of the second vibration system 70.

[0086] It can be understood that the dual setting of the first vibration system 10 and the second vibration system 70 enables the sound module 100 to emit a larger sound through the first vibration system 10 with a relatively large positive projection area, thereby realizing the speaker external mode function. And through the second vibration system 70 with a relatively small total projection area, a relatively small sound can be emitted, thereby realizing the handset call mode function. In this way, the use function of the sound module 100 is enhanced, which is conducive to improving the convenience of using the sound module 100. Among them, when the phases of the two sound waves emitted by the first vibration system 10 and the second vibration are the same, they can be superimposed to enhance the effect, thereby improving the stereo effect of the sound module 100 in the sound external mode. When the phases of the two sound waves emitted by the first vibration system 10 and the second vibration are opposite, based on the principle of acoustic dipole effect, the two sound waves with opposite phases can be offset and attenuated, thereby improving the privacy protection effect of the sound module 100 in the handset call mode. In addition, since the second diaphragm 71 includes a second diaphragm body 711 and a second conductive circuit 713 integrally formed with the second diaphragm body 711, the second diaphragm 71 can also have conductive properties, so that it can be directly electrically connected to the external circuit board 50 through the second diaphragm 71. At this time, there is no need to set the conventional conductive centering support plate 17 in the second vibration system 70, thereby simplifying the structure of the second vibration system 70. In addition, the first vibration system 10 and the second vibration system 70 can share a magnetic circuit system 30, which can also reduce the setting of the magnetic circuit system 30, thereby helping to reduce the thickness of the sound module 100 and improve the convenience of subsequent installation in a limited installation space. Among them, the magnetic circuit system 30 can form a first magnetic gap 31 and a second magnetic gap 33 on the two sides facing each other, and the end of the first voice coil 15 in the first vibration system 10 away from the first diaphragm 13 can be inserted into the first magnetic gap 31, and the end of the second voice coil 73 in the second vibration system 70 away from the second diaphragm 71 can be inserted into the second magnetic gap 33. Furthermore, the first frame 11, the first diaphragm 13 and the magnetic circuit system 30 in the first vibration system 10 form a side with a first magnetic gap 31, which can be enclosed to form a first rear cavity 19. The second frame 75, the second diaphragm 71 and the magnetic circuit system 30 in the second vibration system 70 form a side with a second magnetic gap 33, which can be enclosed to form a second rear cavity 77. And the second rear cavity 77 and the first rear cavity 19 can be isolated. This is to avoid that when the first vibration system 10 and the second vibration system 70 are working, the airflows in the first rear cavity 19 and the second rear cavity 77 will not interfere with each other and affect the vibration state of the first vibration system 10 and the second vibration system 70, resulting in affecting the sound effect of the sound module 100.

[0087] Please refer to Figure 5 ,refer to Fig.11 as well as Fig.12 In one embodiment of the present invention, the second voice coil 73 has two second leads 731, and the two second leads 731 extend from a side of the second voice coil 73 corresponding to the external circuit board 50 and a side away from the external circuit board 50, respectively; the second conductive circuit 713 includes a third circuit portion 715 and a fourth circuit portion 717, one end of the third circuit portion 715 is electrically connected to a second lead 731, and the other end is electrically connected to the external circuit board 50, one end of the fourth circuit portion 717 is electrically connected to another second lead 731, and the other end extends to the edge of the second membrane body 711, and then leads out from the edge of the second membrane body 711 to a side of the external circuit board 50, and is electrically connected to the external circuit board 50.

[0088] It can be understood that the two second leads 731 are respectively led out from the side of the second voice coil 73 close to the external circuit board 50 and the side away from the external circuit board 50, so that the second voice coil 73 can be distributed more evenly on both sides of the side close to the external circuit board 50 and the side away from the circuit board, which is conducive to improving the vibration balance of the second voice coil 73, and then ensuring the effect of the second membrane body 711 vibrating and making sounds. Further, the third circuit portion 715 is extended along the side facing the external circuit board 50, and the fourth circuit portion 717 is first extended to the edge of the first body, and then led out to the side of the external circuit board 50 and electrically connected to the external circuit board 50. In this way, the second diaphragm 71 is electrically connected to the external circuit board 50 on one side, and because the third circuit portion 715 and the fourth circuit portion 717 of the second diaphragm 71 are distributed more compactly at the electrical connection position with the external circuit board 50, the external circuit board 50 is convenient for electrical connection with the second diaphragm 71, and the volume can be set relatively small, so as to further reduce the overall volume of the sound module 100. Furthermore, after the end of the fourth circuit portion 717 away from the second lead 731 extends to the edge of the second membrane body 711 away from the external circuit board 50, it extends on the second membrane body 711 along the edge track of the second membrane body 711 to the side of the second membrane body 711 where the external circuit board 50 is provided. At this time, the fourth circuit portion 717 arranges the circuit along the edge track of the second membrane body 711, which can make the circuit more regular and help improve the convenience of setting the fourth circuit portion 717 on the second membrane body 711. In addition, the second sound unit usually also includes a second frame 75, and the edge of the second membrane body 711 of the second diaphragm 71 can be fixed on the second frame 75. In this way, the fourth circuit portion 717 may be distributed in the joint area of ​​the second membrane body 711 and the second frame 75, so as to reduce the impact on the vibration area of ​​the second membrane body 711. Of course, the present application is not limited to this. In other embodiments, when the volume of the external circuit board 50 is set to be relatively large and surrounds the opposite sides of the second membrane body 711, the third circuit portion 715 and the fourth circuit portion 717 can be electrically connected to the two second leads 731 on the opposite sides of the second voice coil 73 and then extended to the opposite sides of the second membrane body 711 respectively.

[0089] Please refer to Figure 4 , Figure 5 as well as Figure 8 In one embodiment of the present invention, a support portion 111 is formed at a corner of the first frame 11, and the support portion 111 extends to one side of the second vibration system 70; two conductive inserts 113 are embedded in the support portion 111 of the first frame 11, and one end of the two conductive inserts 113 is respectively electrically connected to the first circuit portion 135 and the second circuit portion 137 of the first conductive circuit 133, and the other ends are electrically connected to the external circuit board 50.

[0090] It can be understood that a conductive insert 113 is provided on the support portion 111 of the first frame 11, and the first conductive circuit 133 and the external circuit board 50 are electrically connected through the opposite ends of the conductive insert 113, so that the first conductive circuit 133 can be guided to one side of the second sound-emitting unit, so that the first conductive circuit 133 and the second conductive circuit 713 can be conveniently electrically connected to the same external circuit board 50, thereby facilitating the electrical connection of the external circuit board 50 with the first conductive circuit 133 and the second conductive circuit 713. The first conductive circuit 133 can be electrically connected to one surface of the external circuit board 50, and the end of the conductive insert 113 away from the second conductive circuit 713 can be electrically connected to the other surface opposite to the external circuit board 50, so as to further improve the compactness of the distribution of the two. Furthermore, each conductive insert 113 includes a connecting portion and a first solder pad and a second solder pad disposed at opposite ends of the connecting portion; the two first solder pads in the two conductive inserts 113 are electrically connected to the first circuit portion 135 and the second circuit portion 137 respectively, and the two second solder pads are electrically connected to the external circuit board 50.

[0091] Please refer to Figure 3 , Figure 6 as well as Figure 7 In one embodiment of the present invention, the magnetic circuit system 30 includes a magnetic conductive component 35 and a magnet component 37. The magnetic conductive component 35 includes a first magnetic conductive plate 351 and a second magnetic conductive plate 353, and the first magnetic conductive plate 351 and the second magnetic conductive plate 353 are arranged at a relative interval; the magnet component 37 is arranged between the first magnetic conductive plate 351 and the second magnetic conductive plate 353, and the magnet component 37 includes an internal magnet 371, a middle magnet 373 and an external magnet 375. The middle magnet 373 surrounds the outer side of the internal magnet 371 and is arranged at a distance from the internal magnet 371 to enclose the second magnetic gap 33. The external magnet 375 surrounds the outer side of the middle magnet 373 and is arranged at a distance from the middle magnet 373 to enclose the first magnetic gap 31.

[0092] It can be understood that the second magnetic gap 33 can be enclosed by the internal magnet 371 and the middle magnet 373 in the magnet assembly 37, and the first magnetic gap 31 can be enclosed by the external magnet 375 and the middle magnet 373. At this time, the first magnetic gap 31 and the second magnetic gap 33 also realize the sharing of the middle magnet 373 as above, which is conducive to improving the degree of sharing of the first vibration system 10 and the second vibration system 70 with the magnetic circuit system 30, so as to greatly simplify the structure. At the same time, the first magnetic gap 31 and the second magnetic gap 33 at this time can also be said to be in a nested setting mode in the thickness direction of the magnetic circuit system 30 (that is, the direction in which the first magnetic conductive plate 351 and the second magnetic conductive plate 353 are separated and facing each other), which can minimize the space occupied by the first magnetic gap 31 and the second magnetic gap 33 as a whole in the thickness direction of the magnetic circuit system 30, thereby facilitating a significant reduction in the overall thickness of the sound module 100, so that it can be more conveniently installed in the limited installation space of the electronic device later. Among them, the internal magnet 371 can be square, round or runway-shaped, etc., so that its shape is relatively regular and easy to process and shape. Of course, it can also be other shapes, etc. That is to say, the present application does not limit the specific shape of the internal magnet 371. Specifically, it can be adaptively set according to the shape of the second voice coil 73 of the second vibration system 70, so as to better adapt and accommodate the second voice coil 73. The middle magnet 373 can be a closed annular structure to directly achieve the isolation and blocking of the second magnetic gap 33 and the first magnetic gap 31. Moreover, at this time, the middle magnet 373 is an integral component, which can also facilitate one-time installation and improve the convenience of installation. Of course, the present application is not limited to this. In other embodiments, the middle magnet 373 can also be a structure of multiple magnetic strips arranged at intervals. At this time, a filler is set between the two adjacent magnetic strips to ensure that the first magnetic gap 31 and the second magnetic gap 33 can be isolated. Since the external magnet 375 does not need to isolate the first magnetic gap 31 and the second magnetic gap 33, the external magnet 375 can be a closed annular structure, or a structure of multiple spaced magnetic strips, so that the end of the centering support 17 away from the first frame 11 can be more conveniently extended through the gap between two adjacent magnetic strips in the external magnet 375 to the end of the first voice coil 15 away from the first membrane body 13. When the external magnet 375 can be a closed annular structure, an opening can be provided for the centering support 17 to pass through and connected to the first voice coil 15. Furthermore, the first magnetic conductive plate 351 and the second magnetic conductive plate 353 in the magnetic conductive assembly 35 can be used to clamp and fix the magnet assembly 37, so that the internal magnet 371, the middle magnet 373 and the external magnet 375 can be more conveniently assembled together.At the same time, the magnetic performance can also be enhanced by the first magnetic conductive plate 351 and the second magnetic conductive plate 353, which is conducive to improving the driving performance of the magnetic circuit system 30 on the first vibration system 10 and ensuring the acoustic performance of the first vibration system 10 and the second vibration system 70. The first magnetic conductive plate 351 can be stacked on the surface of the internal magnet 371, the middle magnet 373 and the external magnet 375 facing the first vibration system 10. Moreover, the first magnetic conductive plate 351 can include a first inner magnetic conductive plate and a first outer magnetic conductive plate. At this time, the first inner magnetic conductive plate is stacked on the internal magnet 371 and the middle magnet 373, and the second outer magnetic conductive plate is stacked on the external magnet 375. The first voice coil 15 of the first vibration system 10 can pass through the gap between the first inner magnetic conductive plate and the first outer magnetic conductive plate and be inserted into the first magnetic gap 31. Therefore, the first magnetic conductive plate 351 can be composed of two independent components, the first inner magnetic conductive plate and the first magnetic conductive plate 351, so that the first inner magnetic conductive plate and the first outer magnetic conductive plate have a higher degree of freedom during manufacturing. That is, the first inner magnetic conductive plate and the first outer magnetic conductive plate can be manufactured separately and independently, and the material selection and processing technology can be independently and adaptively selected. The second magnetic conductive plate 353 can be stacked on the surface of the inner magnet 371, the middle magnet 373 and the outer magnet 375 facing the second vibration system 70. At this time, the second magnetic conductive plate 353 can include a second inner magnetic conductive plate and a second outer magnetic conductive plate. At this time, the second inner magnetic conductive plate is stacked on the inner magnet 371, and the second outer magnetic conductive plate is stacked on the middle magnet 373 and the outer magnet 375. The second voice coil 73 of the second vibration system 70 can pass through the gap between the second inner magnetic conductive plate and the second outer magnetic conductive plate and be inserted into the second magnetic gap 33. Therefore, the second magnetic conductive plate 353 can be composed of two independent components, the second inner magnetic conductive plate and the second outer magnetic conductive plate, so that the second inner magnetic conductive plate and the second outer magnetic conductive plate have a higher degree of freedom during manufacturing. That is, the second inner magnetic conductive plate and the second outer magnetic conductive plate can be manufactured separately and independently, and the material selection and processing technology can be independently and adaptively selected.

[0093] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A vibration system, characterized in that: include: The first frame; A first diaphragm, wherein the first diaphragm is disposed on the first frame; A first voice coil, wherein one end of the first voice coil is disposed on a surface of the first diaphragm, and the other end of the first voice coil is extended in a direction away from the first diaphragm; as well as A centering support plate, the centering support plate is arranged on the first frame and connected to an end of the first voice coil away from the first diaphragm; The centering support is made of insulating material, the first diaphragm includes a first diaphragm body and a first conductive circuit integrally formed with the first diaphragm body, one end of the first conductive circuit is electrically connected to the first voice coil, and the other end is used to electrically connect to an external circuit board; The first membrane body includes a middle portion, a folding ring portion and a fixing portion, the folding ring portion surrounds the middle portion, the fixing portion surrounds the folding ring portion, and the fixing portion is connected to the first frame; One end of the first voice coil away from the centering support plate is connected to the middle part, the first conductive circuit is arranged on the side of the first membrane body facing the first voice coil, and one end of the first conductive circuit electrically connected to the first voice coil is located in the middle part, and one end electrically connected to the external circuit board is located in the fixed part.

2. The vibration system according to claim 1, characterized in that The number of the centering support plates is two, and the two centering support plates are respectively arranged on two short axis sides of the first frame; Alternatively, the number of the centering support plates is four, and the four centering support plates are respectively arranged at four corners of the first frame.

3. The vibration system according to claim 1, characterized in that The centering support piece comprises: A first connecting piece, the first connecting piece is connected to the first frame; a second connecting plate, the second connecting plate being connected to the first voice coil; and The middle extending piece is bent at least once to form a curved structure, and two ends of the middle extending piece are respectively connected to the first connecting piece and the second connecting piece.

4. The vibration system according to claim 3, characterized in that The width of the middle extension piece is smaller than the width of the first connecting piece and the width of the second connecting piece; And / or, the first connecting piece is arranged in a square structure, and the second connecting piece is arranged in an arc structure; And / or, the first connecting piece, the second connecting piece and the middle extending piece are located on the same plane; And / or, the first connecting piece, the second connecting piece and the middle extending piece are arranged in an integrated structure.

5. The vibration system according to claim 1, characterized in that The centering support is connected to a surface of the first voice coil facing away from the first diaphragm; And / or, the centering support sheet and the first frame are bonded and fixed; And / or, the centering support plate and the first voice coil are bonded and fixed.

6. The vibration system according to claim 1, characterized in that The thickness of the centering support sheet is greater than or equal to 50 μm and less than or equal to 150 μm.

7. The vibration system according to claim 1, characterized in that The centering support sheet is made of polyimide, polyethylene naphthalate, polyethylene terephthalate, polyetheretherketone or liquid crystal polymer.

8. The vibration system according to claim 1, characterized in that The centering support sheet comprises at least two main body layers and at least one adhesive layer, wherein the at least two main body layers are stacked in sequence and spaced apart from each other, and one adhesive layer is provided between each two adjacent main body layers; The material of the main layer is polyimide, polyethylene naphthalate, polyethylene terephthalate, polyetheretherketone or liquid crystal polymer, and the material of the adhesive layer is acrylic pressure-sensitive adhesive, silicone pressure-sensitive adhesive or polyurethane pressure-sensitive adhesive.

9. The vibration system according to any one of claims 1 to 7, characterized in that The first voice coil has two first leads, which are led out from two corners of the first voice coil on one side corresponding to the external circuit board; the first conductive circuit includes an electrically insulated first circuit portion and a second circuit portion, the first circuit portion and the second circuit portion are respectively electrically connected to the two first leads, and the other ends extend to two corners of the first membrane body, and are used to be electrically connected to the external circuit board; Alternatively, the external circuit board is arranged on the long axis side or the short axis side of the vibration system, and the first voice coil has two first leads, which are respectively led out from the two opposite short axes or long axes, and extend to the edges of the first membrane body respectively, and then extend from the edge of the first membrane body to one side of the external circuit board, and are used to be electrically connected to the external circuit board.

10. A sound module, characterized in that: include: Magnetic circuit system; A first vibration system, the first vibration system is arranged on one side of the magnetic circuit system, and the first vibration system is the vibration system according to any one of claims 1 to 9; as well as An external circuit board, wherein one end of the first conductive circuit away from the first voice coil is electrically connected to the external circuit board.

11. The sound module according to claim 10, characterized in that: The sound module further includes a second vibration system, which is arranged on a side of the magnetic circuit system away from the first vibration system, and the orthographic projection area of ​​the second vibration system is smaller than the projection area of ​​the first vibration system; The second vibration system includes a second diaphragm and a second voice coil, the second diaphragm includes a second membrane body and a second conductive circuit integrally formed with the second membrane body, one end of the second conductive circuit is electrically connected to the second voice coil, and the other end and the first conductive circuit are electrically connected to the same external circuit board, and the external circuit board is arranged on one side of the first vibration system, or on one side of the second vibration system.

12. The sound module according to claim 11, characterized in that: The second voice coil has two second leads, and the two second leads are respectively extended from a side of the second voice coil corresponding to the external circuit board and a side away from the external circuit board; The second conductive circuit includes a third circuit portion and a fourth circuit portion, one end of the third circuit portion is electrically connected to one of the second leads, and the other end is electrically connected to the external circuit board, one end of the fourth circuit portion is electrically connected to another of the second lead, and the other end extends to the edge of the second film body, and then leads out from the edge of the second film body to one side of the external circuit board and is electrically connected to the external circuit board.

13. The sound module according to claim 11, characterized in that: A support portion is formed at a corner of the first frame, and the support portion extends to one side of the second vibration system; Two conductive inserts are embedded on the supporting portion of the first frame, one end of the two conductive inserts is electrically connected to the first circuit portion and the second circuit portion of the first conductive circuit respectively, and the other end is electrically connected to the external circuit board.

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