CN114866914A

CN114866914A - Vibration system and sound production module

Info

Publication number: CN114866914A
Application number: CN202210346964.6A
Authority: CN
Inventors: 蔡晓东; 刘松; 郎贤忠; 张成飞; 刘春发
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-08-05

Abstract

The invention discloses a vibration system and a sound production module, wherein the vibration system comprises a first frame body, a first vibration diaphragm, a first voice coil and a centering support sheet, wherein the first vibration diaphragm is arranged on the first frame body; one end of the first voice coil is arranged on one surface of the first vibrating diaphragm, and the other end of the first voice coil extends in a direction departing from the first vibrating diaphragm; the centering support sheet is arranged on the first frame body and connected to one end, far away from the first vibrating diaphragm, of the first voice coil; the centering support sheet is made of an insulating material, the first vibrating diaphragm comprises a first diaphragm main body and a first conductive circuit integrally formed with the first diaphragm main body, one end of the first conductive circuit is electrically connected with the first voice coil, and the other end of the first conductive circuit is electrically connected with an external circuit board. The technical scheme of the invention can improve the convenience of assembling the vibration system and simultaneously ensure that the magnetic circuit system of the generating module has stronger magnetic force performance.

Description

Vibration system and sound production module

Technical Field

The invention relates to the technical field of electroacoustic transduction, in particular to a vibration system and a sound production module applying the vibration system.

Background

The vibration system of the sound production module in the related art usually includes a vibrating diaphragm, a voice coil combined on one side of the vibrating diaphragm, and a centering support piece for supporting and centering the vibrating diaphragm. Meanwhile, the centering support piece is also used for electrically connecting the voice coil and an external circuit board. At this moment, because this centering branch piece will play the support centering effect to the voice coil loudspeaker voice coil promptly, still will compromise and play the electric conduction effect to it for the inside of this centering branch piece need set up the conductor. And to avoid the conductor breaking during the movement of the spider following the voice coil, the volume of the spider is usually set very large. In this case, the bulky damper pad may increase the occupation of the installation space, which may result in difficult installation, i.e., may affect the assembly of the vibration system. Simultaneously, bulky centering support piece also can make the magnetic circuit of sound production module set need correspond and set up very big space of dodging, leads to influencing magnetic performance of magnetic circuit.

Disclosure of Invention

The invention mainly aims to provide a vibration system, aiming at improving the convenience of the assembly of the vibration system and ensuring that a magnetic circuit system of a generating module has stronger magnetic force performance.

To achieve the above object, the present invention provides a vibration system comprising:

a first frame body;

the first vibrating diaphragm is arranged on the first frame body;

one end of the first voice coil is arranged on one surface of the first vibrating diaphragm, and the other end of the first voice coil extends in a direction departing from the first vibrating diaphragm; and

the centering support sheet is arranged on the first frame body and connected to one end, far away from the first vibrating diaphragm, of the first voice coil;

the centering support sheet is made of an insulating material, the first vibrating diaphragm comprises a first diaphragm main body and a first conductive circuit integrally formed with the first diaphragm main body, one end of the first conductive circuit is electrically connected with the first voice coil, and the other end of the first conductive circuit is electrically connected with an external circuit board.

Optionally, the number of the centering branch pieces is two, and the two centering branch pieces are respectively arranged on two short shaft sides of the first frame body;

or the number of the centering branch pieces is four, and the four centering branch pieces are respectively arranged at four corner parts of the first frame body.

Optionally, the centering disk comprises:

the first connecting piece is connected to the first frame body;

the second connecting sheet is connected to the first voice coil; and

the middle extension piece is bent at least once to form a bent structure, and two ends of the middle extension piece are connected to the first connecting piece and the second connecting piece respectively.

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;

and/or the first connecting sheet is arranged in a square structure, and the second connecting sheet is arranged in an arc structure;

and/or the first connecting sheet, the second connecting sheet and the middle extending sheet are positioned on the same plane;

and/or the first connecting sheet, the second connecting sheet and the middle extending sheet are arranged in an integrated structure.

Optionally, the centering support is connected to a surface of the first voice coil, which faces away from the first diaphragm;

and/or the centering support sheet and the first frame body are fixedly arranged in a bonding manner;

and/or the centering support sheet and the first voice coil are fixedly arranged in a bonding mode.

Optionally, the thickness of the centering branch piece is greater than or equal to 50 μm and less than or equal to 150 μm.

Optionally, the material of the centering support sheet is polyimide, polyethylene naphthalate, polyethylene terephthalate, polyetheretherketone or a liquid crystal polymer.

Optionally, the centering branch piece includes at least two main body layers and at least one adhesive layer, the at least two main body layers are sequentially stacked at intervals, and one adhesive layer is disposed between every two adjacent main body layers;

the main body layer is made of polyimide, polyethylene naphthalate, polyethylene terephthalate, polyether ether ketone or a liquid crystal polymer, and the adhesive layer is made of acrylate pressure-sensitive adhesive, organic silicon pressure-sensitive adhesive or polyurethane pressure-sensitive adhesive.

Optionally, the first voice coil has two first leads, and the two first leads are led out from two corner portions of one side of the first voice coil corresponding to the external circuit board; the first conductive circuit comprises a first circuit part and a second circuit part which are electrically insulated, the first circuit part and the second circuit part are respectively and electrically connected to the two first leads, and the other ends of the first circuit part and the second circuit part respectively extend to the two corner areas of the first film main body and are electrically connected to the external circuit board;

or, the external circuit board is disposed on a long axis side or a short axis side of the vibration system, the first voice coil has two first leads, and the two first leads are led out from the two opposite short axes or long axes, extend to the edge of the first film main body, extend to one side of the external circuit board from the edge of the first film main body, and are electrically connected to the external circuit board.

The invention also provides a sound production module, which comprises:

a magnetic circuit system;

the first vibration system is arranged on one side of the magnetic circuit system, and the first vibration system is the vibration system; and

and one end of the first conductive circuit, which is far away from the first voice coil, is electrically connected with the external circuit board.

Optionally, the sounding module further includes a second vibration system, the second vibration system is disposed on a side of the magnetic circuit system away from the first vibration system, and an orthographic projection area of the second vibration system is smaller than a projection area of the first vibration system;

the second vibration system comprises a second diaphragm and a second voice coil, the second diaphragm comprises a second diaphragm main body and a second conducting circuit integrally formed with the second diaphragm main body, one end of the second conducting circuit is electrically connected to the second voice coil, the other end of the second conducting circuit and the first conducting 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.

Optionally, the second voice coil has two second leads, and the two second leads are respectively led out from one side of the second voice coil corresponding to the external circuit board and one side far away from the external circuit board;

the second conductive circuit comprises a third circuit part and a fourth circuit part, one end of the third circuit part is electrically connected with one second lead, the other end of the third circuit part is electrically connected with the external circuit board, one end of the fourth circuit part is electrically connected with the other second lead, the other end of the fourth circuit part extends to the edge of the second film main body, and then the second circuit part is led out to one side of the external circuit board from the edge of the second film main body and is electrically connected with the external circuit board.

Optionally, a supporting part is formed at a corner of the first frame body, and the supporting part extends to one side of the second vibration system;

the supporting part of the first frame body is embedded with two conductive inserts, one ends of the two conductive inserts are respectively and electrically connected with the first circuit part and the second circuit part of the first conductive circuit, and the other ends of the two conductive inserts are electrically connected with the external circuit board.

According to the technical scheme, the first diaphragm of the vibration system comprises a first diaphragm main body and a first conducting circuit integrally formed with the first diaphragm main body, so that a first voice coil in the vibration system can be electrically connected with an external circuit board through the first conducting circuit on the first diaphragm. That is to say, the first vibrating diaphragm of the vibration system in this scheme all has electric conductive property and can be directly used for electric conduction first voice coil loudspeaker voice coil and external circuit board. At this time, the centering support sheet in the vibration system can be made of an insulating material, so that the centering support sheet only has a supporting and centering effect on the first voice coil. So compare in vibration system's electrically conductive centering piece among the prior art and when playing support centering effect, still will play the electric conduction effect and make the inside of this electrically conductive centering piece need set up the electric conductor to in-process fracture and need the volume of electrically conductive centering piece set up very big in the motion of following the voice coil loudspeaker voice coil at electrically conductive centering piece in order to avoid this electric conductor. Vibration system in this scheme because with the function of electricity connection voice coil loudspeaker voice coil and external circuit board by centering a piece transfer to first vibrating diaphragm on, just also need not to set up the electric conductor that plays electrically conductive effect in the inside of this centering a piece, and then need not to set up very big with the volume of centering a piece in order to avoid this conductor to take place to split at the in-process of centering a piece following the voice coil loudspeaker voice coil motion. That is, the volume of the centering branch piece of the vibration system in the scheme can be set to be very small, so that the occupation of the centering branch piece on the space is greatly reduced, and the convenience for assembling the vibration system is improved. Meanwhile, the centering disk in the scheme does not need to be similar to a conductive centering disk of a vibration system in the prior art and simultaneously meets the supporting centering function and the electrical conduction function of the voice coil, so that the centering disk in the scheme has very high freedom in material selection, processing technology and the like, and the convenience in machining and forming of the centering disk is improved, and the manufacturing cost is reduced.

In addition, when the volume of the centering disk in the scheme is smaller, the magnetic circuit system of the subsequent sounding module can also be provided with a very small avoidance space corresponding to the very small centering disk, so that the phenomenon that the magnetic circuit performance of the magnetic circuit system is greatly reduced due to the fact that the avoidance space is too large is avoided, and the magnetic circuit system is guaranteed to have strong magnetic performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a sound module according to an embodiment of the present invention;

FIG. 2 is another schematic view of the sound module shown in FIG. 1;

FIG. 3 is a cross-sectional view of the speaker module of FIG. 1;

FIG. 4 is a schematic partial structure diagram of the sound module according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a partial explosion of the sound module of FIG. 4;

FIG. 6 is a schematic diagram of a partial explosion of the sound module of FIG. 5;

FIG. 7 is a schematic diagram of a partial explosion of the sound module of FIG. 6;

FIG. 8 is a schematic diagram of another partially exploded structure of the sound module shown in FIG. 5;

FIG. 9 is a schematic view of the first vibration system of FIG. 8;

FIG. 10 is another schematic view of the first vibratory system of FIG. 9;

FIG. 11 is a schematic view of a second vibration system of the sound module of FIG. 5;

FIG. 12 is another perspective view of the second vibration system of the sound module of FIG. 5;

the reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Sound production module	33	Second magnetic gap
10	First vibration system	35	Magnetic conduction assembly
				11	First frame body	351	First magnetic conduction plate
111	Supporting part	353	Second magnetic conduction plate
				113	Conductive insert	37	Magnet assembly
13	First diaphragm	371	Internal magnet
				131	First film body	373	Middle magnet
133	First conductive circuit	375	External magnet
				135	First line part	50	External circuit board
137	Second line part	70	Second vibration system
				15	First voice coil	71	Second diaphragm
151	First lead wire	711	Second film body
				17	Centering support plate	713	Second conductive circuit
171	First connecting piece	715	Third linePart (A)
				173	Second connecting sheet	717	The fourth line part
175	Middle extension piece	73	Second voice coil
				19	First rear cavity	731	Second lead wire
30	Magnetic circuit system	75	Second frame body
				31	First magnetic gap	77	Second rear cavity

The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 7, the present invention provides a vibration system, which includes a first frame 11, a first diaphragm 13, a first voice coil 15, and a centering pad 17. The first vibrating diaphragm 13 is arranged on the first frame body 11; one end of the first voice coil 15 is arranged on one surface of the first diaphragm 13, and the other end extends in a direction away from the first diaphragm 13; the centering support 17 is arranged on the first frame 11 and connected to one end of the first voice coil 15 far away from the first diaphragm 13; the centering support 17 is made of an insulating material, the first diaphragm 13 includes a first film main body 131 and a first conductive trace 133 integrally formed with the first film main body 131, one end of the first conductive trace 133 is electrically connected to the first voice coil 15, and the other end is electrically connected to the external circuit board 50.

In an embodiment of the present invention, the first frame 11 may be used to raise an installation position to install and fix the first diaphragm 13. Wherein, this first support body 11 can ring structure to the edge of first vibrating diaphragm 13 all can be connected to on first support body 11 in circumference, thereby be favorable to improving first vibrating diaphragm 13 and install fixed stability on first support body 11, so that the subsequent stable vibration sound production. Of course, the present application is not limited thereto, and in other embodiments, the first frame 11 may also be a cover structure having an opening at one end, so that an audio channel that plays a role of a guide set for sound emitted by the first diaphragm 13 may be directly formed at the end of the first frame 11 away from the opening in the following. The first film main body 131 of the first diaphragm 13 may be a main body structure of the first diaphragm 13, and the first conductive trace 133 integrally formed with the first film main body 131 may be used for conducting to electrically connect the first voice coil 15 connected to the first diaphragm 13 and the external circuit board 50. It should be noted that, the first conductive traces 133 and the first film main body 131 are integrally formed, that is, they are integrally formed, and the specific forming manner may be that the first conductive traces 133 are printed or coated on the first film main body 131. The first conductive traces 133 may be made of a conductive material, and may be used as a conductive layer on the first film body 131. The first conductive traces 133 and the first film main body 131 are integrally arranged, so that the first conductive traces 133 are stably arranged on the first film main body 131, the first voice coil 15 which can be stable plays a conductive role, and extra occupation is not caused to the space. Centering branch piece 17 can only be used for playing the support centering effect to first voice coil 15 can to reduce the possibility that first voice coil 15 produced bad vibration, guarantee only along first voice coil 15's axial motion can, thereby be favorable to guaranteeing the vibration sound production effect of follow-up first vibrating diaphragm 13.

The first diaphragm 13 of the vibration system according to the embodiment of the present invention includes a first diaphragm main body 131 and a first conductive trace 133 integrally formed with the first diaphragm main 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 trace 133 on the first diaphragm 13. That is, the first diaphragm 13 of the vibration system in this embodiment has a conductive property and can be directly used to electrically connect the first voice coil 15 and the external circuit board 50. In this case, the damper 17 in the vibration system may be made of an insulating material, so that it has a supporting and centering function only for the first voice coil 15. Compared with the prior art, the conductive centering piece 17 of the vibration system has a supporting and centering function and also has an electrical conduction function, so that a conductive body needs to be arranged inside the conductive centering piece 17, and the volume of the conductive centering piece 17 needs to be very large to avoid the conductive body from being broken in the process that the conductive centering piece 17 moves along with the voice coil. In the vibration system of the present embodiment, since 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 provide a conductive body for conducting electricity inside the centering support 17, and there is no need to provide a very large volume of the centering support 17 in order to avoid the conductive body from breaking in the process of the centering support 17 moving along with the voice coil. That is, the volume of the centering branch piece 17 of the vibration system in the scheme can be set to be very small, so that the occupation of the centering branch piece on the space is greatly reduced, and the convenience for assembling the vibration system is improved. Meanwhile, the centering disk 17 in the scheme does not need to be similar to the conductive centering disk 17 of the vibration system in the prior art, and simultaneously meets the requirements of supporting and centering functions and electrical conduction functions of the voice coil, so that the centering disk 17 in the scheme has very large freedom in material selection, processing technology and other aspects, and therefore the convenience in processing and forming the centering disk 17 is improved, and the manufacturing cost is reduced.

In addition, when the volume of the centering branch piece 17 in this scheme is set smaller, the magnetic circuit system 30 of the subsequent sound generating module 100 can also set a very small avoidance space corresponding to the very small centering branch piece 17, so as to avoid a great reduction in the magnetic circuit performance of the magnetic circuit system 30 due to the too large avoidance space, thereby ensuring that the magnetic circuit system 30 has a strong magnetic performance, and facilitating the subsequent vibration sound generating effect of the first diaphragm 13 due to the strong driving force of the first diaphragm 13.

In an embodiment of the present invention, the number of the centering branch pieces 17 is two, and the two centering branch pieces 17 are respectively disposed on two short axis sides of the first frame 11.

It will be appreciated that the provision of two centring lugs 17 allows the number of centring lugs 17 employed to be relatively small, thereby enabling the construction of the vibrating system to be further simplified, to improve ease of assembly and to reduce manufacturing costs. Further, two centering fins 17 are respectively arranged on two short shaft sides of the first frame body 11, so that the distance between the two centering fins 17 can be relatively small, and thus the two ends of the first voice coil 15 on the short shaft can be stably supported. Furthermore, the magnets on the two short axis sides of the magnetic circuit system 30 of the sound module 100 are generally longer than the magnets on the two long axes. Therefore, when the two centering branch pieces 17 are respectively arranged on the two short shaft sides, even if the magnets on the two short shaft sides open an avoiding space in the middle of the centering branch pieces 17, the magnets themselves are relatively long and have strong magnetic force capability, so that the magnets on the two short shaft sides still have strong magnetic force performance when certain avoiding space is opened. It should be noted that, of course, the application is not limited thereto, and in an embodiment of the invention, please refer to fig. 6 and fig. 7 in combination, the number of the centering branch pieces 17 is four, and the four centering branch pieces 17 are respectively disposed at four corners of the first frame body 11. At this time, the four centering fins 17 are respectively located at the four corners of the first frame 11, so that the first voice coil 15 can be uniformly supported and centered in the circumferential direction, and the effect of suppressing the undesirable vibration of the first voice coil 15 is greatly improved.

Referring to fig. 5, in an embodiment of the present invention, the centering branch 17 includes a first connecting piece 171, a second connecting piece 173 and a middle extending piece 175, the first connecting piece 171 is connected to the first frame 11; the second connection pad 173 is connected to the first voice coil 15; the middle extension piece 175 is bent at least once to form a bent structure, and both ends of the middle extension piece 175 are connected to the first connection piece 171 and the second connection piece 173, respectively.

It will be appreciated that the provision of the central extension 175 of the spider 17 in a curved configuration allows the spider 17 to have a greater degree of flexibility to follow the vibrations of the first voice coil 15. Simultaneously, so set up and also can make this centering branch piece 17 in limited installation space, its whole length obtains the extension to have great adaptation vibration stroke in the vibration process of following first voice coil 15, avoid causing the hindrance influence and influencing final sound producing effect because centering branch piece 17's vibration stroke is less to the vibration of first vibrating diaphragm 13. Wherein the middle extension sheet 175 may be bent once, twice or more. Further, in order to further improve the elastic deformation effect of the spider 17 and the stability of the connection with the first frame 11 and the first voice coil 15. In an embodiment of the present invention, the width of the middle extension piece 175 may be smaller than the width of the first connection piece 171 and the width of the second connection piece 173. This allows the spider 17 to vibrate with the first voice coil 15, and to deform with the intermediate extension 175 having a relatively small width. The width of the first connecting piece 171 and the second connecting piece 173 is relatively large, so that the centering branch 17 has a large connecting contact area, which is beneficial to improving the convenience of installation and the stability of connection of the centering branch 17. Furthermore, in an embodiment, the first connecting piece 171 is disposed in a square structure, and the shape of the first connecting piece 171 is regular, and the shape of the connecting surface of the first frame 11 connected thereto can be adapted to the shape of the connecting surface, so as to further improve the convenience and stability of the connection between the centering branch piece 17 and the first frame 11. And the second connecting piece 173 may be provided in an arc structure. So make four centering branch pieces 17 set up respectively in four corner regions of first support body 11, can with the shape looks adaptation of the corner of the circular arc transition of first voice coil 15 to also be favorable to further improving convenience and the stability that centering branch piece 17 and first voice coil 15 are connected. Of course, it should be noted that the present application is not limited thereto, and in other embodiments, the centering branch 17 may also have an arc-shaped sheet structure or a linear sheet structure with the same width.

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

It can be understood that the first connecting piece 171, the second connecting piece 173 and the middle extending piece 175 are disposed in a coplanar manner, so that the shape of the centering branch piece 17 is more regular, and at this time, the processing process of the centering branch piece can be greatly simplified, thereby being beneficial to further improving the convenience of processing and forming the centering branch piece.

In one embodiment of the present invention, the first connecting piece 171, the second connecting piece 173 and the middle extension piece 175 are provided in an integral structure.

It will be appreciated that the first connecting piece 171, the second connecting piece 173 and the middle extension piece 175 are integrally formed, so that the strength of the connecting pieces can be enhanced, and the overall strength of the centering branch piece 17 can be enhanced to ensure the service life. Meanwhile, the first connecting piece 171, the second connecting piece 173 and the middle extending piece 175 can be manufactured by integral molding, so that the manufacturing process is simplified and the production efficiency is improved.

Referring to fig. 7, in an embodiment of the present invention, the centering pad 17 is connected to a surface of the first voice coil 15 away from the first diaphragm 13.

It can be understood that the first membrane main body 131 of the first diaphragm 13 is connected to one surface of the first voice coil 15, and therefore the centering branch 17 is connected to the other surface opposite to the first voice coil 15, so that the ends of the two ends of the first voice coil 15 opposite in the axial direction can be supported and limited, and the first voice coil 15 can be supported and centered more stably, so as to improve the suppression of the undesirable vibration of the first voice coil 15.

In an embodiment of the present invention, the centering branch 17 is fixedly bonded to the first frame 11.

It can be understood that with centering branch piece 17 and first support body 11 bonding fixed for need not additionally to set up connection structure on centering branch piece 17 and first support body 11, directly can through gluing, thereby be favorable to guaranteeing that the structural strength of centering branch piece 17 and first support body 11 itself is difficult to receive the damage. Of course, the present invention is not limited to this, and in other embodiments, the centering stay 17 and the first frame body 11 may be fixed by screws or the like.

Similarly, in order to facilitate the connection between the damper 17 and the first voice coil 15, in an embodiment of the present invention, the damper 17 and the first voice coil 15 may be fixedly bonded.

In an embodiment of the present invention, the thickness of the centering branch 17 is greater than or equal to 50 μm and less than or equal to 150 μm.

It can be understood that when the thickness of the damper 17 is less than 50 μm, the damper 17 is easily made to be too thin and thus has relatively weak 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 damper 17 is larger than 150 μm, the damper 17 is too thick and is not easily deformed, and the vibration of the first voice coil 15 may be affected by the damping effect when the damper is vibrated following the first voice coil 15. Therefore, the thickness of the centering disk 17 in this embodiment 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 disk 17 has a good supporting and centering effect on the first voice coil 15, and can move smoothly along with the first voice coil 15. The thickness of the centering chip 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, or the like, but may be any value within the above range.

In an embodiment of the present invention, the material of the centering pad 17 is polyimide, polyethylene naphthalate, polyethylene terephthalate, polyetheretherketone, or liquid crystal polymer.

It can be understood that so set up can be so that centering branch piece 17 can compromise and have better toughness, intensity and elasticity to be favorable to making centering branch piece 17 follow the vibration that first voice coil 15 can be better emergence adaptability, and be difficult to damage. In this case, the damper 17 may be said to have a single-layer structure. In another embodiment of the present invention, the stiffener 17 may also be a multi-layer structure, which may include at least two main body layers and at least one adhesive layer, wherein the at least two main body layers are sequentially stacked at intervals, and one adhesive layer is disposed between every two adjacent main body layers. The main body layer is made of polyimide, polyethylene naphthalate, polyethylene terephthalate, polyether ether ketone or liquid crystal polymer, and the adhesive layer is made of acrylate pressure-sensitive adhesive, organic silicon pressure-sensitive adhesive or polyurethane pressure-sensitive adhesive. At this time, the adhesive layer can perform a damping function on the centering pad 17 to perform better support centering on the first voice coil 15. Meanwhile, due to the arrangement, a complex structure can be formed by matching the layer structures made of different materials, so that the centering branch piece 17 is convenient to combine the excellent performances made of different materials.

Referring to fig. 5, 8, 9 and 10, in an 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 corner portions of one side of the first voice coil 15 corresponding to the external circuit board 50; the first conductive traces 133 include electrically insulated first and

second trace portions

135 and 137, the first and

second trace portions

135 and 137 being electrically connected to the two first leads 151, respectively, and the other ends extending to the two corner regions of the first film body 131, respectively, and being electrically connected to the external circuit board 50.

It can be understood that the first circuit portion 135 and the second circuit portion 137 are extended at two corresponding corner portions of the first voice coil 15 and the first diaphragm 13, so that the required wiring paths of the first circuit portion 135 and the second circuit portion 137 are shorter, which is beneficial to reducing the manufacturing cost. Of course, the present application is not limited thereto, and in other embodiments, when the external circuit board 50 is disposed 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 led out from the two opposite short axes or long axes, respectively, and extend to the edge of the first film main body 131, and then extend from the edge of the first film main body 131 to one side of the external circuit board 50, and are used for electrically connecting to the external circuit board 50. That is, when the external circuit board 50 is disposed on the long axis of the vibration system, the first leads 151 may be correspondingly led out from the two short axes, and extend to the edge of the first film main body 131, and then extend from the edge of the first film main 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 disposed on the short axis of the vibration system, the first leads 151 are led out from the two opposite long axes, extend to the edge of the first film main body 131, extend from the edge of the first film main body 131 to one side of the external circuit board 50, and are electrically connected to the external circuit board 50.

Referring to fig. 1 to fig. 3, the present invention further provides a sound module 100, where the sound module 100 includes a magnetic circuit system 30, a first vibration system 10 and an external circuit board 50, and the specific structure of the first vibration system 10 refers to the above embodiments, and since the sound module 100 adopts all technical solutions of all the above embodiments, the sound module at least has all beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein. The first vibration system 10 is disposed on one side of the magnetic circuit system 30, and one end of the first conductive trace 133 away from the first voice coil 15 is electrically connected to the external circuit board 50.

Referring to fig. 3, in an embodiment of the present invention, the sound generating module 100 further includes a second vibration system 50, the second vibration system 50 is disposed on a side of the magnetic circuit system 30 away from the first vibration system 10, and an orthographic area of the second vibration system 50 is smaller than a projected area of the first vibration system 10; the second vibration system 50 includes a second diaphragm 71 and a second voice coil 73, the second diaphragm 71 includes a second diaphragm body 711 and a second conductive trace 713 integrally formed with the second diaphragm body 711, one end of the second conductive trace 713 is electrically connected to the second voice coil 73, the other end and the first conductive trace 133 are electrically connected to the same external circuit board 50, and the external circuit board 50 is disposed on one side of the first vibration system 10 or on one side of the second vibration system 50.

It can be understood that the dual arrangement of the first vibration system 10 and the second vibration system 50 enables the sound module 100 to emit a relatively large sound through the first vibration system 10 with a relatively large orthographic projection area, so as to implement the speaker outgoing mode function. And relatively small sound can be emitted by the second vibration system 50 with relatively small whole projection area, so that the function of the earphone conversation mode is realized. The using function of the sound module 100 is enhanced, thereby being beneficial to improving the convenience of using the sound module 100. When the phases of the two sound waves emitted by the first vibration system 10 and the second vibration are the same, the two sound waves can be superimposed to play a role in enhancing, so that the stereo effect of the sound production module 100 in the sound external mode can be improved. 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 the acoustic dipole effect, the two sound waves with opposite phases can be offset to play a role in attenuation, so that the privacy protection effect of the sound production module 100 in the earphone conversation mode can be improved. In addition, since the second diaphragm 71 includes the second film body 711 and the second conductive trace 713 integrally formed with the second film body 711, the second diaphragm 71 may also have a conductive property, so that it can be directly electrically connected to the external circuit board 50 through the second diaphragm 71. At this time, the conventional conductive stiffener 17 is not required to be provided in the second vibration system 50, thereby simplifying the structure of the second vibration system 50. In addition, the first vibration system 10 and the second vibration system 50 can share one magnetic circuit system 30, so that the arrangement of the magnetic circuit system 30 can be reduced, thereby being beneficial to reducing the thickness of the sounding module 100 and improving the convenience of subsequent installation in a limited installation space. Wherein, the magnetic circuit system 30 may be formed with a first magnetic gap 31 and a second magnetic gap 33 at two opposite sides, an end of the first voice coil 15 in the first vibration system 10 away from the first diaphragm 13 may be inserted into the first magnetic gap 31, and an end of the second voice coil 73 in the second vibration system 50 away from the second diaphragm 71 may be inserted into the second magnetic gap 33. Further, the first frame 11, the first diaphragm 13 and the magnetic circuit system 30 of the first vibration system 10, on the side where the first magnetic gap 31 is formed, may enclose to form the first back cavity 19. And the second frame 75, the second diaphragm 71 and the magnetic circuit system 30 of the second vibration system 50 at the side where the second magnetic gap 33 is formed may enclose a second back cavity 77. And the second rear chamber 77 and the first rear chamber 19 may be in a separate arrangement. So as to prevent the air flows in the first rear cavity 19 and the second rear cavity 77 from interfering with each other and generating influence on the vibration states of the first vibration system 10 and the second vibration system 50 when the first vibration system 10 and the second vibration system 50 work, thereby influencing the sound production effect of the sound production module 100.

Referring to fig. 5, fig. 11 and fig. 12 in an embodiment of the present invention, the second voice coil 73 has two second leads 731, and the two second leads 731 are respectively led out 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; the second conductive traces 713 include third trace portions 715 and fourth trace portions 717, one end of the third trace portions 715 is electrically connected to one second lead 731, and the other end is electrically connected to the external circuit board 50, and one end of the fourth trace portions 717 is electrically connected to the other second lead 731, and the other end extends to the edge of the second film body 711, is drawn out from the edge of the second film body 711 to one side of the external circuit board 50, and is electrically connected to the external circuit board 50.

It can be understood that the two second leads 731 are respectively led out from one side of the second voice coil 73 close to the external circuit board 50 and one side of the second voice coil 73 far away from the external circuit board 50, so that the second voice coil 73 can be distributed more evenly on one side close to the external circuit board 50 and on two sides of one side far away from the circuit board, and therefore the vibration balance of the second voice coil 73 is improved, and the effect that the second membrane main body 711 vibrates to sound therewith is ensured. Further, the third circuit portion 715 extends toward one side of the external circuit board 50, and the fourth circuit portion 717 extends to the edge of the first body, and then is led out to one side of the external circuit board 50 to be electrically connected to the external circuit board 50. Thus, the second diaphragm 71 is electrically connected to the external circuit board 50 on one side, and the third circuit portion 715 and the fourth circuit portion 717 of the second diaphragm 71 are distributed compactly at the electrical connection site with the external circuit board 50, so that the external circuit board 50 is easily electrically connected to the second diaphragm 71, and the volume that can be set is relatively small, thereby further reducing the overall volume of the acoustic module 100. Further, an end of the fourth line portion 717 remote from the second lead wire 731 extends to an edge of the second film main body 711 on a side remote from the external circuit board 50, and then extends on the second film main body 711 along an edge trace of the second film main body 711 to a side of the second film main body 711 where the external circuit board 50 is provided. At this time, the fourth line portions 717 are arranged along the edge traces of the second film main body 711, and the lines can be made regular respectively, which is advantageous for improving the convenience of the fourth line portions 717 provided on the second film main body 711. Also, the second sound emitting unit generally includes a second frame 75, and an edge of the second film body 711 of the second diaphragm 71 may be fixed to the second frame 75. This makes it possible for the fourth wire parts 717 to be distributed in the coupling region of the second film body 711 and the second frame body 75, so as to reduce the influence on the vibration region of the second film body 711. Of course, the present invention is not limited thereto, and in other embodiments, when the external circuit board 50 is disposed relatively large in volume and surrounds the opposite sides of the second film body 711, the third and

fourth circuit portions

715 and 717 may extend to the opposite sides of the second film body 711 after being electrically connected to the two second leads 731 on the opposite sides of the second voice coil 73.

Referring to fig. 4, 5 and 8, in an embodiment of the present invention, a supporting portion 111 is formed at a corner of the first frame 11, and the supporting portion 111 extends to a side of the second vibration system 50; two conductive inserts 113 are embedded in the supporting portion 111 of the first frame 11, one ends of the two conductive inserts 113 are electrically connected to the first circuit portion 135 and the second circuit portion 137 of the first conductive trace 133, respectively, and the other ends are electrically connected to the external circuit board 50.

It can be understood that, the conductive inserts 113 are disposed on the supporting portion 111 of the first frame 11, and the first conductive traces 133 and the external circuit board 50 are respectively electrically connected through two opposite ends of the conductive inserts 113, so that the first conductive traces 133 can be guided to one side of the second sound generating unit through the first conductive traces 133, and the first conductive traces 133 and the second conductive traces 713 can be conveniently electrically connected to the same external circuit board 50, thereby facilitating improvement of convenience of electrical connection between the external circuit board 50 and the first conductive traces 133 and the second conductive traces 713. The first conductive trace 133 may be electrically connected to one surface of the external circuit board 50, and an end of the conductive insert 113 away from the second conductive trace 713 may be electrically connected to the other surface of the external circuit board 50 opposite to the first conductive trace, so as to further improve the compactness of the distribution. Further, each of the conductive inserts 113 includes a connecting portion, and a first pad and a second pad provided at opposite ends of the connecting portion; the two first pads of the two conductive inserts 113 are electrically connected to the first and

second circuit portions

135 and 137, respectively, and the two second pads are electrically connected to the external circuit board 50.

Referring to fig. 3, fig. 6 and fig. 7, in an embodiment of the present invention, the magnetic circuit system 30 includes a magnetic conducting assembly 35 and a magnet assembly 37, the magnetic conducting assembly 35 includes a first magnetic conducting plate 351 and a second magnetic conducting plate 353, and the first magnetic conducting plate 351 and the second magnetic conducting plate 353 are disposed at an interval; magnet subassembly 37 is located between first magnetic conduction board 351 and the second magnetic conduction board 353, and magnet subassembly 37 includes inside magnet 371, middle part magnet 373 and outside magnet 375, and middle part magnet 373 surrounds in the outside of inside magnet 371 to be the interval setting with inside magnet 371 and enclose and form second magnetic gap 33, and outside magnet 375 surrounds in the outside of middle part magnet 373, and is the interval setting with middle part magnet 373 and enclose and form first magnetic gap 31.

It is understood that the second magnetic gap 33 is defined by the inner magnet 371 and the middle magnet 373 of the magnet assembly 37, and the first magnetic gap 31 is defined by the outer magnet 375 and the middle magnet 373. In this case, the first magnetic gap 31 and the second magnetic gap 33 share the center magnet 373 as described above, which is advantageous for improving the degree of sharing the magnetic path system 30 between the first vibration system 10 and the second vibration system 50, and for greatly simplifying the structure. Meanwhile, the first magnetic gap 31 and the second magnetic gap 33 at this time are also in a nested arrangement mode in the thickness direction of the magnetic circuit system 30 (i.e. the direction in which the first magnetic conductive plate 351 and the second magnetic conductive plate 353 face away from and face to each other), so that the occupied space of the first magnetic gap 31 and the second magnetic gap 33 in the thickness direction of the magnetic circuit system 30 can be reduced to the greatest extent, thereby being beneficial to greatly reducing the overall thickness of the sound-generating module 100, and facilitating the subsequent installation in the limited installation space of the electronic device more conveniently. The inner magnet 371 may be square, circular, or racetrack, for example, so that it is relatively regular in shape and easy to machine. Of course, other shapes are possible. That is, the present application does not limit the specific shape of the internal magnet 371, and the specific shape may be adaptively set according to the shape of the second voice coil 73 of the second vibration system 50, so as to better fit and accommodate the second voice coil 73. The middle magnet 373 may have a closed ring structure to directly realize isolation blocking of the second magnetic gap 33 and the first magnetic gap 31. In addition, the middle magnet 373 is an integral component, which facilitates the installation at one time and improves the convenience of installation. Of course, the present application is not limited thereto, and in other embodiments, the middle magnet 373 may also be a plurality of magnetic strips arranged at intervals, and in this case, a filler is arranged between two adjacent magnetic strips to ensure that the first magnetic gap 31 and the second magnetic gap 33 can be separated. The external magnet 375 does not need to play an isolation role in the first magnetic gap 31 and the second magnetic gap 33, so that the external magnet 375 can be of a closed annular structure and can also be of a magnetic stripe structure arranged at a plurality of intervals, and the end, away from the first frame body 11, of the centering support piece 17 can extend to the end, away from the first membrane body 13, of the first voice coil 15 through the gap between the two adjacent magnetic stripes in the external magnet 351 conveniently. When the outer magnet 375 may have a closed ring structure, the opening through which the yoke 17 passes may be formed to be connected to the first voice coil 15. Further, the first magnetic conductive plate 351 and the second magnetic conductive plate 353 of the magnetic conductive assembly 35 can be used to clamp the fixed magnet assembly 37, so that the inner magnet 371, the middle magnet 373, and the outer magnet 375 can be conveniently assembled together. Meanwhile, the magnetic performance can be enhanced by the first magnetic conduction plate 351 and the second magnetic conduction plate 353, so that the driving performance of the magnetic circuit system 30 on the first vibration system 10 can be improved, and the acoustic performance of the first vibration system 10 and the second vibration system 50 can be ensured. The first magnetic conductive plate 351 may be stacked on the surfaces of the inner magnet 371, the middle magnet 373, and the outer magnet 375 facing the first vibration system 10. Also, the first magnetic conductive plate 351 may include a first inner magnetic conductive plate stacked on the inner magnet 371 and the middle magnet 373, and a first outer magnetic conductive plate stacked on the outer magnet 375, and the first voice coil 15 of the first vibration system 10 may be inserted into the first magnetic gap 31 through a space between the first inner magnetic conductive plate and the first outer magnetic conductive plate. Therefore, the first magnetic conduction plate 351 can be composed of two independent parts, namely, a first inner magnetic conduction plate and a first magnetic conduction plate 351, so that the first inner magnetic conduction plate and the first outer magnetic conduction plate have higher freedom degree in manufacturing. That is, the first inner magnetic conductive plate and the first outer magnetic conductive plate can be separately and independently manufactured, and can be independently selected in material selection and processing technology. And the second magnetic conductive plate 353 may be stacked on the surfaces of the inner magnet 371, the middle magnet 373, and the outer magnet 375 facing the second vibration system 50. At this time, the second magnetic conductive plate 353 may include a second inner magnetic conductive plate and a second outer magnetic conductive plate, the second inner magnetic conductive plate is stacked on the inner magnet 371, the second outer magnetic conductive plate is stacked on the middle magnet 373 and the outer magnet 375, and the second voice coil 73 of the second vibration system 50 may penetrate through the gap between the second inner magnetic conductive plate and the second outer magnetic conductive plate to be inserted into the second magnetic gap 33. Therefore, the second magnetic conducting plate 353 can be composed of two independent parts, namely a second inner magnetic conducting plate and a second outer magnetic conducting plate, so that the second inner magnetic conducting plate and the second outer magnetic conducting plate have higher freedom degree in manufacturing. That is, the second inner magnetic conductive plate and the second outer magnetic conductive plate can be separately and independently manufactured, and can be independently selected in material selection and processing technology.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A vibratory system, comprising:

a first frame body;

the first vibrating diaphragm is arranged on the first frame body;

2. The vibration system according to claim 1, wherein the number of the centering tabs is two, and the two centering tabs are respectively provided on two short-axis sides of the first frame body;

3. A vibratory system as set forth in claim 1 wherein said spider includes:

the first connecting piece is connected to the first frame body;

the second connecting sheet is connected to the first voice coil; and

4. The vibratory system of claim 3 wherein the intermediate extension piece has a width less than the width of the first connection piece and the width of the second connection piece;

5. The vibration system of claim 1 wherein the spider is attached to a surface of the first voice coil facing away from the first diaphragm;

6. The vibratory system of claim 1, wherein the spider has a thickness of 50 μm or more and 150 μm or less.

7. The vibratory system of claim 1, wherein the centering pads are made of polyimide, polyethylene naphthalate, polyethylene terephthalate, polyetheretherketone, or liquid crystal polymer.

8. The vibration system of claim 1 wherein said centering chip comprises at least two body layers and at least one adhesive layer, wherein at least two of said body layers are stacked in a sequentially spaced apart relationship, and one of said adhesive layers is disposed between each adjacent two of said body layers;

the main body layer is made of polyimide, polyethylene naphthalate, polyethylene terephthalate, polyether ether ketone or liquid crystal polymer, and the adhesive layer is made of acrylate pressure-sensitive adhesive, organic silicon pressure-sensitive adhesive or polyurethane pressure-sensitive adhesive.

9. The vibration system according to any one of claims 1 to 7, wherein the first voice coil has two first lead wires led out from two corner portions of a side of the first voice coil corresponding to the external circuit board; the first conductive circuit comprises a first circuit part and a second circuit part which are electrically insulated, the first circuit part and the second circuit part are respectively and electrically connected to the two first leads, and the other ends of the first circuit part and the second circuit part respectively extend to the two corner areas of the first film main body and are electrically connected to the external circuit board;

10. A sound generating module, comprising:

a magnetic circuit system;

a first vibration system provided on one side of the magnetic circuit system, the first vibration system being the vibration system according to any one of claims 1 to 9; and

11. The acoustic module of claim 10, further comprising a second vibration system disposed on a side of the magnetic circuit system facing away from the first vibration system, wherein an orthographic area of the second vibration system is smaller than a projected area of the first vibration system;

12. The voice module as claimed in claim 11, wherein the second voice coil has two second leads, and the two second leads are respectively led out from a side of the second voice coil corresponding to the external circuit board and a side away from the external circuit board;

13. The sound generating module as claimed in claim 11, wherein a corner portion of the first frame body is formed with a support portion extending to one side of the second vibration system;