WO2021097956A1

WO2021097956A1 - Sound production device

Info

Publication number: WO2021097956A1
Application number: PCT/CN2019/123901
Authority: WO
Inventors: 宋威; 邵涛
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2019-11-21
Filing date: 2019-12-09
Publication date: 2021-05-27
Also published as: CN110996226B; CN110996226A

Abstract

Provided is a sound production device, comprising a frame, a vibration system supported on the frame, and a magnetic circuit system having a magnetic gap, wherein the frame comprises a bottom wall, an outer wall and an inner wall, with the outer wall surrounding and being spaced apart from the inner wall; the vibration system comprises a vibrating diaphragm, a voice coil and a voice coil bracket; the vibrating diaphragm comprises a vibration portion, and a first fold edge portion and a second fold edge portion which extend from the vibration portion in a folded manner, a first fixing portion extending from the first fold edge portion in a folded manner, and a second fixing portion extending from the second fold edge portion in a folded manner, with the first fold edge portion surrounding and being spaced apart from the second fixing portion, the first fixing portion being fixed to the frame, and the second fixing portion being fixed to the magnetic circuit system and/or the inner wall of the frame; and the voice coil is inserted into the magnetic gap to drive the vibration portion to vibration to produce sound. Compared to the prior art, the sound production device of the present invention is highly reliable.

Description

Sound device

Technical field

The invention relates to the field of electro-acoustic conversion, in particular to a sound-producing device applied to electronic sound box products.

Background technique

The sound device is also known as a speaker or a horn, which is used in a speaker to convert audio signals into sound for playback.

The related art sound generating device includes a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system with a magnetic gap. The magnetic circuit system drives the vibration system to vibrate and emit sound. The vibration system includes a frame fixed to the basin. The frame is used for vibrating and producing a sound diaphragm, a voice coil support attached to the dome of the diaphragm close to the side of the magnetic circuit system, and a voice coil support that is wound around the voice coil support and inserted into the magnetic gap Voice coil.

technical problem

However, in the related art sound device, because the diaphragm is a single-folded ring structure, the vibration stiffness of the diaphragm of this structure is limited. During the vibration process, when the amplitude of the diaphragm is too large, it is easy to damage the diaphragm, thereby greatly reducing Reliability of vibration.

Therefore, it is necessary to provide a new sound generating device to solve the above technical problems.

Technical solutions

The object of the present invention is to provide a sound generating device with high reliability.

In order to achieve the above object, the present invention provides a sound generating device, which includes a basin frame, a vibration system supported on the basin frame, and a magnetic circuit system fixed to the basin frame to drive the vibration system to vibrate and produce sound. The circuit system has a magnetic gap;

The vibration system includes:

A diaphragm, the diaphragm includes a vibrating portion, a first folding ring portion and a second folding ring portion that are respectively bent and extended from opposite sides of the vibrating portion, and the first folding ring portion is one distance away from the vibrating portion A first fixing portion that is bent and extended on the side and a second fixing portion that is bent and extended on a side of the second ring portion away from the vibration portion, the first ring portion surrounds the second ring portion and Spaced apart from each other, the first fixing part is fixed to the basin frame, and the second fixing part is fixed to the magnetic circuit system; and,

The voice coil is inserted in the magnetic gap to drive the vibrating part to vibrate and produce sound.

Preferably, the magnetic circuit system includes a magnetic bowl fixed to the basin frame and a magnetic steel unit fixed to the magnetic bowl, and the second fixing portion is fixed to the magnetic steel unit.

Preferably, the magnetic circuit system includes a magnetic bowl fixed to the basin frame and a magnetic steel unit fixed to the magnetic bowl; the second fixing portion is fixed to the magnetic bowl.

Preferably, the magnetic bowl includes:

The first magnetic bowl, the first magnetic bowl includes a first magnetic bowl bottom wall fixed in the basin frame, and a first magnetic bowl bent and extended from the first magnetic bowl bottom wall in a direction close to the diaphragm. Side wall of magnetic bowl;

A second magnetic bowl, the second magnetic bowl includes a second magnetic bowl bottom wall that is directly opposite to and spaced apart from the first magnetic bowl bottom wall, and is close to the first magnetic bowl from the second magnetic bowl bottom wall The second magnetic bowl side wall bent and extended in the direction of the bowl side wall;

The magnetic steel unit is fixed to the bottom wall of the first magnetic bowl, and the second magnetic bowl bottom wall is covered on an end of the magnetic steel unit away from the bottom wall of the first magnetic bowl. The magnetic steel unit is connected to the bottom wall of the first magnetic bowl. The side wall of the first magnetic bowl and the side wall of the second magnetic bowl jointly form the magnetic gap, and the second fixing portion is fixed on a side of the second magnetic bowl away from the first magnetic bowl.

Preferably, the second fixing portion is provided with a relief hole passing through it, and the second fixing portion is sleeved on the second magnetic bowl through the relief hole and is connected to the side wall of the second magnetic bowl. fixed.

Preferably, the second fixing portion is attached and fixed to an end of the bottom wall of the second magnetic bowl away from the first magnetic bowl.

Preferably, the vibration system further includes a voice coil support fixed to the vibrating part; the magnetic circuit system includes a relief groove matched with the voice coil support, and the relief grooves are respectively aligned along the vibration direction. It is arranged through the side wall of the first magnetic bowl and the side wall of the second magnetic bowl; the voice coil support extends into the magnetic gap through the relief groove and is connected with the voice coil.

Preferably, the vibrating portion is provided with a through hole penetrating therethrough, and one end of the voice coil support connected to the vibrating portion completely covers the through hole, and serves as a dome structure of the diaphragm.

Preferably, the vibration system further includes an auxiliary diaphragm arranged at a distance from the diaphragm, one side of the auxiliary diaphragm is fixed to the side of the basin frame away from the diaphragm, and the other side is fixed to the The voice coil support is far away from the side of the diaphragm.

Preferably, the basin frame includes a bottom plate, an outer wall bent and extended from the periphery of the bottom plate, and an inner wall bent and extended from the bottom plate. The outer walls are arranged around the inner wall and are spaced apart from each other; the first fixing portion is fixed On the outer wall, the second fixing portion is fixedly supported on the inner wall at a side close to the basin frame along the vibration direction of the diaphragm.

The present invention provides a sound generating device, which includes a basin frame, a vibration system supported on the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound. The magnetic circuit system has a magnetic gap; the basin frame includes a bottom. A wall, an outer wall bent and extended from the periphery of the bottom wall, and an inner wall bent and extended from the bottom wall, the outer walls are arranged around the inner wall and are spaced apart from each other;

The vibration system includes:

A diaphragm, the diaphragm includes a vibrating portion, a first folding ring portion and a second folding ring portion that are respectively bent and extended from opposite sides of the vibrating portion, and the first folding ring portion is one distance away from the vibrating portion A first fixing portion that is bent and extended on the side and a second fixing portion that is bent and extended on a side of the second ring portion away from the vibration portion, the first ring portion surrounds the second ring portion and Are spaced apart from each other, the first fixing portion is fixed to the outer wall, the second fixing portion is fixed to the inner wall, and the second fixing portion is spaced apart from the magnetic circuit system; and,

Preferably, the inner wall encloses an accommodating space, the magnetic circuit system is installed in the accommodating space, the inner wall is provided with a through opening extending therethrough, and the opening extends along the vibration direction of the diaphragm; The vibration system also includes:

A voice coil bracket, one end of the voice coil bracket is fixed to the vibrating part, and the other end of the voice coil bracket extends into the magnetic gap through the opening and is connected with the voice coil;

The voice coil drives the voice coil support to vibrate to drive the vibrating part to vibrate and produce sound.

Beneficial effect

Compared with the related art, in the sound generating device of the present invention, the diaphragm includes a vibrating part, a first folding ring part and a second folding ring part which are respectively bent and extended from opposite sides of the vibration part, and the first folding ring part is away from the vibration. A first fixing portion bent and extended on one side of the second ring portion and a second fixing portion bent and extended on the side away from the vibrating portion of the second ring portion. The first ring portion surrounds the second ring portion and is spaced apart from each other. The first fixing portion The second fixing part is fixed to the inner wall of the magnetic circuit system and/or the basin frame. In the above structure, the first folding ring part and the second folding ring part are arranged so that the diaphragm has a double folding ring structure, The double-folded ring structure effectively improves the rigidity of the diaphragm, avoids the problem of damage to the diaphragm due to excessive vibration amplitude during the vibration process, so that the vibration reliability of the vibration system is high.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:

FIG. 1 is a schematic diagram of a three-dimensional structure of a sound emitting device according to Embodiment 1 of the present invention;

2 is an exploded view of a part of the three-dimensional structure of the sound generating device according to the first embodiment of the present invention;

Figure 3 is a sectional view taken along the line A-A in Figure 1;

4 is a schematic cross-sectional view of a sound emitting device according to the second embodiment of the present invention;

Fig. 5 is a schematic cross-sectional view of a sound emitting device according to a third embodiment of the present invention;

Fig. 6 is an enlarged view of the part B shown in Fig. 5. The best mode of the present invention

Embodiments of the present invention

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Implementation mode one

Please refer to FIGS. 1-3 at the same time. The present invention provides a sound generating device 100, which includes a basin frame 1, a vibration system 2 and a magnetic circuit system 3 with a magnetic gap 30. The vibration system 2 and the magnetic circuit system 3 are respectively fixedly supported on the basin frame 1, and the magnetic circuit system 3 is used to drive the vibration system 2 to vibrate and produce sound.

It should be noted that the specific structural form of the basin frame 1 is not limited, and it can be specifically set according to the actual use. For example, in this embodiment, the basin frame 1 includes a bottom plate 11, which is curved by the outer periphery of the bottom plate 11. The folded and extended outer wall 12 and the inner wall 13 bent and extended from the inner side of the bottom plate 11 are arranged around the inner wall 13 and spaced apart from each other. Of course, in practical applications, it is also feasible that the basin frame only has a bottom plate and an outer wall.

The inner wall 13 encloses the accommodating space 10; the inner wall 13 is provided with a through opening 131 extending therethrough, and the through opening 131 extends along the vibration direction of the vibration system 2.

The vibration system 2 includes: a diaphragm 21, a voice coil support 22, a voice coil 23 and an auxiliary diaphragm 24.

The diaphragm 21 includes a vibrating portion 211, a folding ring portion 212 extending from the periphery of the vibrating portion 211, and a fixing portion 213 bending and extending from the folding ring portion 212 and fixed to the basin frame 1.

In this embodiment, specifically, the vibrating part 211 is used to radiate sound waves to generate sound when vibrating. Specifically, the vibration part 211 has a ring shape.

The folding ring portion 212 is used for improving elastic support and amplitude when the vibration portion 211 vibrates, and includes a first folding ring portion 2121 and a second folding ring portion 2122 that are respectively bent and extended from opposite sides of the vibration portion 211 and formed a ring shape. The first folding ring portion 2121 is arranged around the second folding ring portion 2122 and is spaced apart from each other.

The fixing portion 213 is used to fix the diaphragm 21 to the basin frame 1, and includes a first fixing portion 2131 bent and extending from the first folding ring portion 2121 away from the vibrating portion 211, and a second folding ring portion 2122 away from the vibrating portion The second fixing portion 2132 is bent and extended on the side 211, the first fixing portion 2131 and the second fixing portion 2132 are both ring-shaped; the first fixing portion 2131 is fixed to the outer wall 12, and the second fixing portion 2132 is fixed to the magnetic circuit system 3. Far away along the vibration direction of the diaphragm 21.

In the above structure, the first folding ring portion 2121 and the second folding ring portion 2122 are provided, so that the diaphragm 21 has a double-folded ring structure. The double-folded ring structure effectively improves the rigidity of the diaphragm 21 and avoids the vibration process. The problem of damage to the diaphragm due to excessive vibration amplitude, which makes the vibration reliability of the vibration system 2 high.

One end of the voice coil support 22 is fixed to the vibrating part 211, and the other end of the voice coil support 22 extends into the magnetic gap 30 through the opening 131.

In this embodiment, the voice coil support 22 includes an annular flat wall 221 and an extension wall 222. The flat wall 221 is attached to the side of the vibrating part 211 close to the magnetic circuit system 3 to serve as the dome structure of the diaphragm 21 The extension wall 222 is bent and extended in a direction away from the diaphragm 21 from the flat wall 221, and is used for connecting with the voice coil 23 and supporting the voice coil 23.

More preferably, the vibrating portion 211 is provided with a through hole 2111 penetrating therethrough, and the end of the voice coil support 22 connected to the vibrating portion 211 completely covers the through hole 2111, that is, the plate wall 221 completely covers the through hole 2111. Since the flat wall 221 is a rigid material compared to the vibration part 211, it is beneficial to improve the high-frequency acoustic performance of the sound emitting device 100, and the arrangement of the through hole 2111 can reduce the thickness of the diaphragm 21 to a certain extent, effectively increasing The vibration space of the vibration part 211 is shown.

The voice coil 23 is inserted into the magnetic gap 30 and is fixedly connected to the end of the voice coil support 22 away from the vibrating portion 211, that is, the voice coil 23 is fixedly connected to the extension wall 222. The voice coil 23 drives the extension wall 222 to vibrate to drive the flat wall 221 to vibrate, thereby driving the vibrating part 211 to vibrate and produce sound.

It should be noted that the flat wall 221 of the voice coil bracket 22 serves as the top ball structure of the diaphragm 21 to realize the radiation of sound waves, and the extension 222 is used to fix the voice coil 23, that is, the voice coil bracket 22 and the diaphragm 21 are formed The integrated structure reduces the fitting error of the assembly between the parts, improves its acoustic performance, simplifies the assembly process and improves the production efficiency.

More preferably, the extension wall 222 includes a first extension wall 2221 bent and extended from the flat wall 221 in a direction away from the vibrating portion 211 of the diaphragm 21, and a second extension wall 2221 bent and extended from the first extension wall 2221 in a direction close to the magnetic circuit system 3. Two extension walls 2222. The second extension wall 2222 abuts against the outer side of the voice coil 23 and forms a fixed connection. The above structure realizes that the extension wall 222 of the voice coil bracket 22 is adhered from the outside of the voice coil 23 to form a support for the voice coil 23. This structural design is more flexible for the control of the magnetic gap 30 and is more convenient for the overall structure design of the sound generating device 100.

The extension wall 222 may be an integral ring structure, or may be a split structure enclosed in a ring shape. In this embodiment, the extension walls 222 include three and are arranged at equal intervals.

More preferably, the auxiliary diaphragm 24 is spaced from the diaphragm 21, one side of the auxiliary diaphragm 24 is fixed to the outer wall 13 on the side away from the diaphragm 21, and the other side is fixed to the first extension wall 2221 away from the diaphragm 21. The side and the position outside the inner wall 13 is used to prevent lateral swing of the voice coil support 22, thereby avoiding lateral swing of the voice coil 23 and improving the stability of the sound generating device 100.

The magnetic circuit system 3 is installed in the accommodating space 10, which includes a magnetic bowl (not shown in the figure) fixed to the basin frame 1, a relief slot 33 provided through the magnetic bowl, a magnetic steel unit 32 fixed to the magnetic bowl, and a magnetic bowl card It is fixed to the inner wall 13; of course, when the basin frame is only provided with a bottom plate and an outer wall, it is also possible to directly support the magnetic bowl on the bottom plate by fixing.

Specifically, the magnetic bowl includes a first magnetic bowl 31 and a second magnetic bowl 32.

The first magnetic bowl 31 includes a first magnetic bowl bottom wall 311 and a first magnetic bowl side wall 312; further, the first magnetic bowl bottom wall 311 is fixed to the bottom plate 11, and the first magnetic bowl side wall 312 is formed by the first magnetic bowl bottom wall 312 The wall 311 bends and extends in the direction close to the diaphragm 21.

The second magnetic bowl 34 includes a second magnetic bowl bottom wall 341 and a second magnetic bowl side wall 342; further, the second magnetic bowl bottom wall 341 and the first magnetic bowl bottom wall 311 are arranged directly opposite to each other, and the second magnetic bowl side The wall 342 is bent and extended from the bottom wall 341 of the second magnetic bowl toward the side wall 312 of the first magnetic bowl. The side wall 342 of the second magnetic bowl can abut against the side wall 312 of the first magnetic bowl, or it can be connected to the side wall 312 of the first magnetic bowl. The sidewalls 312 are spaced apart.

The magnetic steel unit 32 is fixed to the first magnetic bowl bottom wall 311, and the second magnetic bowl bottom wall 341 is provided on the end of the magnetic steel unit 32 away from the first magnetic bowl bottom wall 311; the magnetic steel unit 32 and the first magnetic bowl side wall 311 A magnetic gap 30 is formed together with the side wall 342 of the second magnetic bowl, and the second fixing portion 2132 is fixed on the side of the second magnetic bowl 34 away from the first magnetic bowl 31.

Further, the second fixing portion 2132 is provided with a relief hole 2130 penetrating therethrough, and the second fixing portion 2132 is sleeved on the second magnetic bowl 32 through the relief hole 2130 and fixed to the side wall 342 of the second magnetic bowl.

It is worth mentioning that through the arrangement of the second magnetic bowl 34, the magnetic field lines on the side of the magnetic steel unit 32 close to the diaphragm 21 are effectively guided back into the magnetic gap 30, so that the magnetic field lines of the magnetic circuit system 3 are more fully utilized; Of course, it is also feasible for the magnetic bowl to have only the first magnetic bowl. At this time, the second fixing part of the diaphragm is fixed on the side wall of the first magnetic bowl away from the bottom wall of the first magnetic bowl, or the second magnetic bowl The fixing part is fixed on the side of the magnetic steel unit away from the bottom wall of the first magnetic bowl.

More preferably, in order to improve the vibration reliability of the diaphragm 21, the second fixing portion 2132 is fixedly supported on the inner wall 13 on the side close to the frame along the vibration direction of the diaphragm, that is, the second fixing portion 2132 is fixed on the side of the second magnetic bowl at the same time. On the wall 342 and the inner wall 13, the reliability of the fixing assembly of the second fixing portion 2132 is effectively improved, thereby improving the vibration reliability of the diaphragm 21; here, it should be noted that only the bottom plate and the outer wall are provided in the basin frame. In the solution, the second fixing part is directly fixed on the magnetic circuit system.

In the first embodiment, the relief groove 33 extends along the vibration direction and penetrates the first magnetic bowl side wall 312 and the second magnetic bowl side wall 342, and the relief groove 33 matches the second extension wall 2222. That is, the shape and the number of the relief grooves 33 correspond to the shape and the number of the second extension wall 2222. The first extension wall 2221 is arranged around the outer side of the magnetic circuit system 3 and is arranged at intervals, and the second extension wall 2222 extends into the magnetic gap 30 through the relief groove 33 and is connected with the voice coil 23.

Further, the magnetic circuit system 3 is installed in the accommodating space 10 so that the relief slot 33 and the through opening 131 are arranged directly opposite one another. At this time, the voice coil support 22 sequentially extends into the magnetic gap 30 through the opening 131 and the relief groove 33. More specifically, the first extension wall 2221 is arranged around the inner wall 13 and spaced apart, and the second extension wall 2222 is sequentially passed through The through opening 131 and the relief groove 33 extend into the magnetic gap 30 and are connected to the outside of the voice coil 23.

Implementation mode two

Please refer to FIG. 4, the sound emitting device 100a of the second embodiment has basically the same structure as the sound emitting device of the first embodiment, and the same parts between the two will not be repeated one by one. Here, the diaphragm of the two The structure of the second fixing part and its position and connection relationship are different. The following describes the specific structure:

In the second embodiment, the second fixing portion 2132a of the diaphragm 21a is attached and fixed to the end of the second magnetic bowl bottom wall 341a away from the first magnetic bowl 31a. By fixing the second fixing portion 2132a to the upper end surface 3411a, it is effectively The bonding area between the second fixing part 2132a and the magnetic circuit system 3a is increased, making the bonding between the two more firm, and improving the reliability of the fixing assembly of the second fixing part 2132a, thereby improving the vibration of the diaphragm 21a reliability.

More preferably, in order to improve the reliability of the vibration of the diaphragm 21a, the basin frame 1a is also provided with an inner wall 13a, so that the upper end surface 3411a of the bottom wall 341a of the second magnetic bowl and the inner wall 13a are located on the same plane away from the top surface 131a of the bottom plate 11a. The second fixing portion 2132a is fixed and supported on the inner wall 13a along the side of the frame 1a along the vibration direction of the diaphragm. That is, the second fixing portion 2132a is fixed to the upper end surface 3411a and the top surface 131a at the same time, further improving the second fixing portion 2132a. Assembly reliability.

Implementation mode three

Please refer to FIGS. 5-6. The sound emitting device 100b of the third embodiment has basically the same structure as the sound emitting device of the first embodiment. The same parts between the two will not be repeated one by one. Here, the diaphragms of the two The position and connection relationship of the second fixing part in, is different, the following is a description of the specific structure:

In the third embodiment, the basin frame 1b includes a bottom plate 11b, an outer wall 12b bent and extended from the outer periphery of the bottom plate 11b, and an inner wall 13b bent and extended from the inner side of the bottom plate 11b. The outer walls 12b are arranged around the inner wall 13b and are spaced apart from each other.

The inner wall 13b encloses an accommodating space 10b, and the magnetic circuit system 3b is fixedly housed in the accommodating space 10b. Specifically, the magnetic circuit system 3b is fixed to the inner wall 13b by a magnetic bowl.

The second fixing portion 2132b of the diaphragm 21b is fixed to the inner wall 13b, and the second fixing portion 2132b is spaced apart from the magnetic circuit system 3b.

The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

Claims

A sound-producing device, comprising a basin frame, a vibration system supported on the basin frame, and a magnetic circuit system fixed on the basin frame to drive the vibration system to vibrate and produce sound, the magnetic circuit system having a magnetic gap, which is characterized by Is that

The vibration system includes:

A diaphragm, the diaphragm includes a vibrating portion, a first folding ring portion and a second folding ring portion that are respectively bent and extended from opposite sides of the vibrating portion, and the first folding ring portion is one distance away from the vibrating portion A first fixing portion that is bent and extended on the side and a second fixing portion that is bent and extended on a side of the second ring portion away from the vibration portion, the first ring portion surrounds the second ring portion and Spaced apart from each other, the first fixing part is fixed to the basin frame, and the second fixing part is fixed to the magnetic circuit system; and,

The voice coil is inserted in the magnetic gap to drive the vibrating part to vibrate and produce sound.
The sounding device according to claim 1, wherein the magnetic circuit system comprises a magnetic bowl fixed to the basin frame and a magnetic steel unit fixed to the magnetic bowl, and the second fixing part is fixed to the magnetic bowl. The magnetic steel unit.
The sounding device according to claim 1, wherein the magnetic circuit system includes a magnetic bowl fixed to the basin frame and a magnetic steel unit fixed to the magnetic bowl; the second fixing portion is fixed to the magnetic bowl; The magnetic bowl.
The sound emitting device according to claim 3, wherein the magnetic bowl comprises:

The first magnetic bowl, the first magnetic bowl includes a first magnetic bowl bottom wall fixed in the basin frame, and a first magnetic bowl bent and extended from the first magnetic bowl bottom wall in a direction close to the diaphragm. Side wall of magnetic bowl;

A second magnetic bowl, the second magnetic bowl includes a second magnetic bowl bottom wall that is directly opposite to and spaced apart from the first magnetic bowl bottom wall, and is close to the first magnetic bowl from the second magnetic bowl bottom wall The second magnetic bowl side wall bent and extended in the direction of the bowl side wall;

The magnetic steel unit is fixed to the bottom wall of the first magnetic bowl, and the second magnetic bowl bottom wall is covered on an end of the magnetic steel unit away from the bottom wall of the first magnetic bowl. The magnetic steel unit is connected to the bottom wall of the first magnetic bowl. The side wall of the first magnetic bowl and the side wall of the second magnetic bowl jointly form the magnetic gap, and the second fixing portion is fixed on a side of the second magnetic bowl away from the first magnetic bowl.
The sounding device according to claim 4, wherein the second fixing portion is provided with a relief hole penetrating therethrough, and the second fixing portion is sleeved on the second magnetic field through the relief hole. The bowl is fixed with the side wall of the second magnetic bowl.
4. The sounding device according to claim 4, wherein the second fixing portion is attached and fixed to an end of the bottom wall of the second magnetic bowl away from the first magnetic bowl.
The sounding device according to claim 4, wherein the vibration system further comprises a voice coil support fixed to the vibrating part; the magnetic circuit system includes a relief groove matching the voice coil support, so The relief groove is provided along the vibration direction and respectively penetrates the side wall of the first magnetic bowl and the side wall of the second magnetic bowl; the voice coil support extends into the magnetic gap through the relief groove and Connect with the voice coil.
The sounding device according to claim 7, wherein the vibrating part is provided with a through hole penetrating therethrough, and one end of the voice coil support connected to the vibrating part completely covers the through hole for The dome structure of the diaphragm.
The sounding device according to claim 7, wherein the vibration system further comprises an auxiliary diaphragm arranged at a distance from the diaphragm, and one side of the auxiliary diaphragm is fixed to the basin frame away from the vibration One side of the diaphragm and the other side are fixed on the side of the voice coil support away from the diaphragm.
The sounding device according to claims 1-9, wherein the basin frame comprises a bottom plate, an outer wall bent and extended from the periphery of the bottom plate, and an inner wall bent and extended from the bottom plate, and the outer wall surrounds the The inner walls are arranged and spaced apart from each other; the first fixing portion is fixed to the outer wall, and the second fixing portion is fixedly supported on the inner wall at a side close to the basin frame along the vibration direction of the diaphragm.
A sound-producing device, comprising a basin frame, a vibration system supported on the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and produce sound. The magnetic circuit system has a magnetic gap, and is characterized in that the basin frame includes A bottom wall, an outer wall bent and extended from the periphery of the bottom wall, and an inner wall bent and extended from the bottom wall, the outer walls are arranged around the inner wall and are spaced apart from each other;

The vibration system includes:

A diaphragm, the diaphragm includes a vibrating portion, a first folding ring portion and a second folding ring portion that are respectively bent and extended from opposite sides of the vibrating portion, and the first folding ring portion is one distance away from the vibrating portion A first fixing portion that is bent and extended on the side and a second fixing portion that is bent and extended on a side of the second ring portion away from the vibration portion, the first ring portion surrounds the second ring portion and Are spaced apart from each other, the first fixing portion is fixed to the outer wall, the second fixing portion is fixed to the inner wall, and the second fixing portion is spaced apart from the magnetic circuit system; and,

The voice coil is inserted in the magnetic gap to drive the vibrating part to vibrate and produce sound.
The sounding device according to claim 11, wherein the inner wall encloses an accommodating space, the magnetic circuit system is installed in the accommodating space, and the inner wall is provided with a through hole penetrating therethrough, and the communication The opening extends along the vibration direction of the diaphragm; the vibration system further includes:

A voice coil bracket, one end of the voice coil bracket is fixed to the vibrating part, and the other end of the voice coil bracket extends into the magnetic gap through the opening and is connected with the voice coil;

The voice coil drives the voice coil support to vibrate to drive the vibrating part to vibrate and produce sound.
The sounding device according to claim 12, wherein the vibrating part is provided with a through hole penetrating therethrough, and one end of the voice coil support connected to the vibrating part completely covers the through hole for The dome structure of the diaphragm.
The sounding device according to claim 12, wherein the vibration system further comprises an auxiliary diaphragm arranged at a distance from the diaphragm, and one side of the auxiliary diaphragm is fixed to the basin frame away from the vibration One side of the diaphragm and the other side are fixed on the side of the voice coil support away from the diaphragm.