CN112261541A

CN112261541A - Sound production device

Info

Publication number: CN112261541A
Application number: CN202011005139.7A
Authority: CN
Inventors: 宋威; 张帆; 陶伟伟; 金鑫
Original assignee: AAC Optoelectronic Changzhou Co Ltd; Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Current assignee: AAC Photoelectric Technologies Changzhou Co Ltd; AAC Optoelectronic Changzhou Co Ltd; Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-01-22
Anticipated expiration: 2040-09-23
Also published as: CN112261541B; WO2022062115A1

Abstract

The invention provides a sounding device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the basin frame is provided with a basin opening; the vibration system comprises a vibration diaphragm, a voice coil, a framework, a ball top and an elastic part, wherein the elastic part comprises a first elastic part and a second elastic part which are respectively positioned at two opposite sides of the voice coil, and the vibration diaphragm is provided with a through hole; the framework comprises a framework body and framework holes, and the framework holes are opposite to the through holes and are communicated with the through holes; the ball top is attached to and fixed on the framework body and completely covers the framework hole, and the ball top and the framework body together completely cover the through hole; the first elastic piece and the second elastic piece comprise elastic piece bodies, and the first elastic piece further comprises a welding disc part; the ball top comprises a ball top body and an edge part which is attached and fixed with the framework body, one side of the edge part, which is close to the second elastic piece, extends to form a counterweight part for balancing the mass of the pad part, and the counterweight part extends in the direction away from the first elastic piece. Compared with the prior art, the sound production device has the advantages that the diaphragm is good in symmetry and good in acoustic performance.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of acoustoelectrics, in particular to a sounding device applied to a portable electronic product.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. A sound generating device for playing sound is widely applied to smart mobile devices such as current mobile phones. The sound quality of the sound-producing device is directly related to the vibration system and the magnetic circuit system of the sound-producing device.

The vibration system of the sound production device in the related art comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system for driving the vibration system to produce sound; vibration system is including being fixed in vibrating diaphragm, the drive of basin frame the voice coil loudspeaker voice coil of vibrating diaphragm vibration sound production, be fixed in respectively the vibrating diaphragm with the skeleton of voice coil loudspeaker voice coil and be fixed in respectively the basin frame with the skeleton is kept away from the first elastic component and the second elastic component of vibrating diaphragm one end, first elastic component with the second elastic component all includes the elastic component body, first elastic component still include by the elastic component body to the first extension wall and by of the direction of vibrating diaphragm is buckled the extension the elastic component body one side to the second extension wall of the direction of voice coil loudspeaker voice coil is buckled the extension, first extension wall is fixed in the skeleton lateral wall, the second extension wall is fixed in the skeleton body, the second extend the wall with the lead wire electricity of voice coil loudspeaker voice coil is connected.

However, in the sound generation device according to the related art, the voice coil has a rectangular structure, and the first elastic member and the second elastic member are respectively located at opposite sides of the voice coil. Compared with the second elastic part, the first elastic part is additionally provided with the first extending wall and the second extending wall which are electrically connected with the lead of the voice coil, and the first extending wall and the second extending wall are additionally fixed on the framework, so that mass unbalance of the vibrating diaphragm connected with the framework on two opposite sides of the voice coil is caused, mass asymmetry exists in the vibrating system, amplitude swing of the vibrating diaphragm is caused by the mass asymmetry, and acoustic performance of the sound generating device is reduced.

Therefore, there is a need to provide a new sound generation device to solve the above technical problems.

[ summary of the invention ]

The invention aims to provide a sound production device with good diaphragm symmetry and good acoustic performance.

In order to achieve the purpose, the invention provides a sounding device which comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system for driving the vibration system to sound; the vibration system comprises a vibrating diaphragm fixed on the basin frame, a voice coil driving the vibrating diaphragm to vibrate and sound, a framework connecting the voice coil to the vibrating diaphragm, a ball top attached to and fixed on the framework, and an elastic part fixed on the basin frame and connected with one end, far away from the vibrating diaphragm, of the framework, wherein the elastic part comprises a first elastic part and a second elastic part which are respectively positioned at two opposite sides of the voice coil, and the vibrating diaphragm is provided with a through hole penetrating through the vibrating diaphragm; the framework comprises a framework body and framework holes penetrating through the framework body, the vibrating diaphragm and the voice coil are respectively fixed on two opposite sides of the framework body, and the framework holes are opposite to the through holes and are communicated with the through holes; the ball top is fixedly attached to the framework body and completely covers the framework hole, and the ball top and the framework body together completely cover the through hole; the first elastic piece and the second elastic piece both comprise elastic piece bodies, the first elastic piece further comprises a pad part extending from the elastic piece bodies to the direction close to the voice coil, and the pad part is electrically connected with the voice coil; the dome includes the dome body and certainly dome body periphery outwards extends and with the fixed edge portion of skeleton body laminating, the dome body is in orthographic projection on the skeleton body is whole to fall into the skeleton is downthehole, the edge portion is close to one side of second elastic component is extended and is formed and is used for balancing the counter weight portion of the quality of pad portion, counter weight portion is towards keeping away from the direction of first elastic component is extended.

Preferably, the bobbin further comprises a bobbin side wall extending from the outer periphery of the bobbin body to the direction of the magnetic circuit system, and the bobbin side wall is wound on the voice coil and arranged at an interval with the voice coil; the pad portion comprises a first extension wall and a second extension wall, wherein the first extension wall is bent and extended in the direction of the vibrating diaphragm, the second extension wall is bent and extended in the direction of the voice coil, the first extension wall is far away from one side of the elastic piece body, the second extension wall is located on one side, close to the voice coil, of the framework side wall, the second extension wall is fixed on the framework body, and the second extension wall is electrically connected with the voice coil.

Preferably, the mass of the weight is equal to the mass of the second extension arm.

Preferably, the skeleton body includes the annular main part that is connected with the skeleton lateral wall and by the internal periphery of main part is to the sunken annular skeleton step that is formed of magnetic circuit direction, the main part is fixed in the vibrating diaphragm is close to one side of magnetic circuit, enclose of skeleton step becomes skeleton hole, the ball top laminating is fixed the skeleton step is kept away from one side of magnetic circuit, the voice coil loudspeaker voice coil is fixed the skeleton step is close to one side of magnetic circuit.

Preferably, the skeleton step comprises a step side wall which is bent and extended from the inner peripheral edge of the main body part to the direction of the magnetic circuit system and a step support wall which is bent and extended from one side of the step side wall, which is far away from the main body part, to the direction of the basin frame, and the edge part and the counterweight part are attached and fixed to the step support wall.

Preferably, the step support wall is of a rectangular structure, and the width of the step support wall on the same side as the second elastic member is greater than the width of the step support wall on the same side as the first elastic member.

Preferably, the bobbin body further includes a bobbin fixing portion bent and extended from a side of the step support wall close to the magnetic circuit system to the direction of the voice coil, and the bobbin fixing portion is fixed to a side of the voice coil far away from the magnetic circuit system.

Preferably, the vibrating diaphragm includes vibration portion, by the edge of vibration portion buckles the book ring portion that extends and by book ring portion is kept away from the fixed part that a lateral buckling of vibration portion extends, the through-hole runs through the vibration portion sets up, the main part is fixed in the vibration portion, the fixed part is fixed in the basin frame.

Preferably, the elastic part body comprises a first fixing arm fixed on the basin frame, a second fixing arm connected to the side wall of the framework far away from one end of the vibrating diaphragm and spaced from the first fixing arm, and an elastic arm connected with the first fixing arm and the second fixing arm.

Preferably, the vibration system further comprises an auxiliary diaphragm connected to the elastic member body and far away from one side of the diaphragm, the auxiliary diaphragm comprises two auxiliary diaphragms which are respectively located on two opposite sides of the voice coil, each auxiliary diaphragm is attached to and fixed to the first fixed arm at one end, and the other end of each auxiliary diaphragm is fixed to the second fixed arm.

Compared with the prior art, the sound production device has the advantages that the skeleton is provided with the skeleton body and the skeleton hole penetrating through the skeleton body, and the ball top is attached to and fixed on the skeleton body and completely covers the skeleton hole, so that the ball top and the skeleton body together completely cover the through hole. And the area of the ball top attached to the framework body and positioned on the same side of the second elastic piece is larger than that of the framework body and positioned on the same side of the first elastic piece, so that the mass balance between one side of the vibration system corresponding to the first elastic piece and one side of the vibration system corresponding to the second elastic piece is realized. Because of the pad portion is connected with the skeleton and arouses the quality increase, this structure increases the quality of the relative both sides of voice coil loudspeaker voice coil of balanced vibration system through the skeleton body that is in the same side at the second elastic component and the width of the fixed part of ball top laminating to make the quality of vibrating diaphragm in the relative both sides of voice coil loudspeaker voice coil reach the balance, thereby make to reduce the risk that vibration system has the quality asymmetry, and reduce and cause because of the quality asymmetry the amplitude of vibrating diaphragm sways, thereby makes the acoustic performance of sound production device good.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic perspective view of a sound device according to the present invention;

FIG. 2 is an exploded perspective view of a sound device according to the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 1;

FIG. 4 is an enlarged partial view of portion B of FIG. 3;

FIG. 5 is an enlarged partial view of portion C of FIG. 3;

FIG. 6 is an assembly view of the frame, voice coil, bobbin and first resilient member of the sound device of the present invention;

fig. 7 is a schematic perspective view of a skeleton of a sound device according to the present invention.

[ detailed description ] embodiments

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.

Referring to fig. 1 to 7, the present invention provides a sound production device 100, which includes a frame 1, a vibration system 2 and a magnetic circuit system 3 respectively fixed to the frame 1, wherein the magnetic circuit system 3 has a magnetic gap 30, and the magnetic circuit system 3 is used for driving the vibration system 2 to vibrate and produce sound.

In this embodiment, the frame 1 is rectangular.

The vibration system 2 includes a diaphragm 21, a voice coil 22, a bobbin 23, a dome 24, an elastic member 4, and an auxiliary diaphragm 25.

The vibrating diaphragm 21 is fixed on the basin stand 1. The diaphragm 21 is used for vibrating and sounding. The diaphragm 21 includes a through hole 20 penetrating therethrough, a vibrating portion 213, a folded ring portion 212 bent and extended from a periphery of the vibrating portion 213, and a fixing portion 211 bent and extended from a side of the folded ring portion 212 away from the vibrating portion 213. Specifically, the through hole 20 is disposed through the vibration portion 213. The fixing part 211 is fixed on the frame 1.

The voice coil 22 is fixed to the diaphragm 21 and inserted into the magnetic gap 30 to drive the diaphragm 21 to vibrate and generate sound.

The bobbin 23 includes a bobbin body 231, a bobbin side wall 232 extending from an outer peripheral edge of the bobbin body 231 in a direction of the magnetic circuit system 3, and a bobbin hole 230 penetrating the bobbin body 231.

The bobbin 23 connects the voice coil 22 to the diaphragm 21. The framework body 231 is used for connecting the diaphragm 21 and the voice coil 22, so that the voice coil 22 drives the diaphragm 21 to vibrate and sound. Specifically, the diaphragm 21 and the voice coil 22 are respectively fixed to two opposite sides of the bobbin body 231. That is, the bobbin body 231 is fixed to the vibrating portion 213 on the side closer to the magnetic circuit system 3, and the voice coil 22 is fixed to the bobbin body 231 on the side closer to the magnetic circuit system 3.

Specifically, the skeletal body 231 includes a main body portion 2311 and a skeletal step 2312.

The body portion 2311 is connected to the carcass sidewall 232. The body portion 2311 is annular. The body portion 2311 is fixed to the vibrating portion 213. Specifically, the main body 2311 is fixed to a side of the diaphragm 21 close to the magnetic circuit system 3.

The rib 2312 is formed by recessing the inner peripheral edge of the body 2311 in the direction of the magnetic circuit system 3. The skeleton step 2312 encloses the skeleton hole 230. The skeletal step 2312 is used to secure the dome 24. The ball top 24 is attached to and fixes one side of the skeleton step 2312 away from the magnetic circuit system 3. The voice coil 22 is fixed on the side of the skeleton step 2312 close to the magnetic circuit system 3.

Specifically, the skeleton step 2312 includes a step side wall 2312a bent and extended from the inner periphery of the body portion 2311 toward the magnetic circuit system 3, and a step support wall 2312b bent and extended from a side of the step side wall 2312a away from the body portion 2311 toward a direction away from the frame 1. This configuration makes the skeletal step 2312 easier to assemble when used to attach the dome 24, and makes the sound device 100 compact in structure, which facilitates a miniaturized design of reduced thickness.

In order to fix the voice coil 22 to the bobbin step 2312 and to enable the voice coil 22 to be inserted into the magnetic gap 30, so as to ensure the space between the magnetic circuit system 3 and the bobbin 23 and the dome 24, the bobbin body 231 further includes a bobbin fixing portion 2313. The bobbin fixing portion 2313 is bent and extended from the step support wall 2312b toward the voice coil 22 in a direction toward the magnetic circuit system 3. The bobbin fixing portion 2313 is fixed to a side of the voice coil 22 away from the magnetic circuit system 3.

The bobbin side wall 232 is wound around the voice coil 22 and spaced apart from the voice coil 22. The frame side wall 232 is used for connecting the first elastic member 41 and the second elastic member 42, respectively.

The skeleton hole 230 is opposite to and communicated with the through hole 20. In this embodiment, the frame hole 230 has a rectangular structure.

The dome 24 includes a dome body 241, a rim portion 242 extending outwardly from the periphery of the dome body 241, and a weight portion 243.

The orthographic projection of the dome body 241 on the skeleton body 231 falls entirely within the skeleton hole 230.

The edge portion 242 extends outward from the periphery of the dome body 241. The top dome 24 is attached to the frame 23. Specifically, the edge portion 242 is attached to and fixed to the frame body 231. The ball top 24 is fit and fixed on the skeleton body 231 and completely covers the skeleton hole 230. The dome 24 and the skeleton body 231 together completely cover the through hole 20.

The weight portion 243 is formed by extending one side of the edge portion 242.

Specifically, the edge portion 242 and the weight portion 243 are attached and fixed to the step supporting wall 2312 b. In this structure, the edge portion 242 and the weight portion 243 of the dome 24 are matched with the skeleton step 2312, so that the gluing state of the edge portion 242 and the weight portion 243 of the dome 24 and the skeleton step 2312 is easily controlled, and the reliability of the diaphragm 21 is improved, and meanwhile, the space of the sounding device 100 in the vibration direction of the diaphragm 21 does not need to be occupied, that is, the space of the sounding device 100 in the thickness direction does not need to be additionally increased.

The elastic part 4 is fixed on the basin frame and connected with one end of the framework 23 far away from the vibrating diaphragm 21. Specifically, the elastic member 4 includes a first elastic member 41 and a second elastic member 42 respectively located at opposite sides of the voice coil 22.

The first elastic element 41 is fixed on the frame 1 and one end of the framework 23 far away from the vibrating diaphragm 21. Specifically, the first elastic member 41 includes an elastic member body 401 and a pad portion 411 extending from the elastic member body 401 toward the voice coil 22.

The elastic part body 401 comprises a first fixing arm 4011 fixed on the basin frame 1, a second fixing arm 4012 connected to the framework side wall 232 far away from one end of the vibrating diaphragm 21 and spaced from the first fixing arm 4011, and an elastic arm 4013 connected to the first fixing arm 4011 and the second fixing arm 4012. The structure of the elastic member body 401 of the first elastic member 41 is used to improve the vibration strength and balance of the vibration system 2 and suppress the sway.

The pad portion 411 includes a first extending wall 4111 extending from the elastic member body 401 to the direction of the diaphragm 21 in a bending manner, and a second extending wall 4112 extending from a side of the first extending wall 4111 away from the elastic member body 401 to the direction of the voice coil 22 in a bending manner.

The first extending wall 4111 is located on a side of the bobbin side wall 232 close to the voice coil 22.

The second extending wall 4112 is fixed to the frame body 231.

The first elastic member 41 is a flexible circuit board. The pad portion 411 is electrically connected to the voice coil 22. Specifically, the second extending wall 4112 is electrically connected to the voice coil 22. The first elastic member 41 is configured to improve the vibration strength and balance of the vibration system 2, suppress the vibration, and lead out the voice coil 22 to be connected to an external power source in the other direction, so as to avoid the risk that the lead of the voice coil is easily broken when the lead structure of the voice coil is led out of the power source.

The second elastic element 42 is fixed on the frame 1 and one end of the framework 23 far away from the vibrating diaphragm 21. Specifically, the second elastic member 42 includes the elastic member body 401. The structure of the elastic member body 401 of the second elastic member 42 is used to improve the vibration strength and balance of the vibration system 2 and suppress the sway.

In the present embodiment, the voice coil 22 has a rectangular structure. The first elastic member 41 and the second elastic member 42 are respectively located at opposite sides of the voice coil 22. The structure is used for enhancing the vibration effect of the vibrating diaphragm 21 and improving the acoustic performance of the sounding device 100, and is used for balancing the swing of the vibration system 2 and improving the stability of the sounding device 100.

Since the first extending wall 4111 and the second extending wall 4112 are fixed to the bobbin 23, respectively, and the bobbin is connected to the diaphragm 21, a mass imbalance of the diaphragm 21 connected to the bobbin 23 is caused at two opposite sides of the voice coil. In order to balance the mass of the diaphragm 21 on the two opposite sides of the voice coil, the sound generating device 100 is designed to increase the mass of the bobbin 23 and the dome 24 on one side of the second elastic member 42 so as to be symmetrical with the first extending wall 4111 and the second extending wall 4112 by the short axis mass of the bobbin body 231. The structure specifically is as follows:

the weight portion 243 is formed by extending a side of the edge portion 242 close to the second elastic member 42. Specifically, the weight portion 243 extends in a direction away from the first elastic member 41.

The weight portion 243 serves to balance the mass of the pad portion 411. Specifically, the mass of the weight portion 243 is equal to the mass of the second extension arm 4112.

The weight portion 243 of the dome 24 located on the same side of the second elastic member 42 is disposed on the edge portion 242, and the weight portion 243 has a mass equivalent to that of the land portion 411, that is, the area of the dome 24 attached to the skeleton body 231 located on the same side of the second elastic member 42 is larger than that located on the same side of the first elastic member 41, so that the vibration system 2 has a mass balance between the side corresponding to the first elastic member 41 and the side corresponding to the second elastic member 42. That is, the step support wall 2312b has a rectangular structure, and the width of the step support wall 2312b on the same side as the second elastic member 42 is greater than that on the same side as the first elastic member 41.

In the above structure, the areas of the portions of the opposite sides of the step support wall 2312b, which are attached to the dome 24, are different. Namely, the edge portion 242 and the weight portion 243 are attached to the same side of the second elastic member 42 as the step support wall 2312b, and only the edge portion 242 is attached to the other side thereof, namely, the same side of the first elastic member 41 as the step support wall 2312 b. This structure adjusts the masses of the bobbin body 231 on the two opposite sides of the second elastic member 42 and the first elastic member 41, respectively, and simultaneously the first extending wall 4111 and the second extending wall 4112 are connected to the opposite side of the diaphragm 21 through the bobbin 23, so that the masses of the diaphragm 21 on the two opposite sides of the voice coil 22 are balanced, thereby reducing the risk of mass asymmetry of the vibration system 2, and reducing amplitude swing of the diaphragm 21 due to mass asymmetry, so that the amplitude uniformity of the diaphragm 21 is good, and thus the acoustic performance of the sound generating device 100 is good.

The auxiliary diaphragm 25 is connected to the auxiliary diaphragm 25 on the side of the elastic member body 401 away from the diaphragm 21. Specifically, supplementary vibrating diaphragm 25 includes two and is located respectively voice coil 22's relative both sides, each the laminating of supplementary vibrating diaphragm 25's one end is fixed in first fixed arm 4011, the other end of this supplementary vibrating diaphragm 25 is fixed in second fixed arm 4012. The auxiliary diaphragm 25 is used to improve the vibration strength and balance of the vibration system 2 and suppress the sway.

The magnetic circuit system 3 includes a magnetic yoke 31 disposed opposite to the diaphragm 21, a main magnetic steel 32 and an auxiliary magnetic steel 33 fixed to the magnetic yoke 31, a main pole core 34 stacked and fixed to one side of the main magnetic steel 32 close to the diaphragm 21, and an auxiliary pole core 35 stacked and fixed to one side of the auxiliary magnetic steel 33 close to the diaphragm 21.

The secondary magnetic steel 33 surrounds the primary magnetic steel 32 and is spaced apart from the primary magnetic steel 32 to form a magnetic gap 30, and the voice coil 22 is inserted into the magnetic gap 30.

The auxiliary pole core 35 and the auxiliary magnetic steel 33 are arranged on the inner side of the framework side wall 232 at intervals.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims

1. A sounding device comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system driving the vibration system to sound; the vibration system comprises a vibrating diaphragm fixed on the basin frame, a voice coil driving the vibrating diaphragm to vibrate and sound, a framework connecting the voice coil to the vibrating diaphragm, a ball top attached to and fixed on the framework, and an elastic part fixed on the basin frame and connected with one end, far away from the vibrating diaphragm, of the framework, wherein the elastic part comprises a first elastic part and a second elastic part which are respectively positioned at two opposite sides of the voice coil, and the vibrating diaphragm is provided with a through hole penetrating through the vibrating diaphragm; the framework comprises a framework body and framework holes penetrating through the framework body, the vibrating diaphragm and the voice coil are respectively fixed on two opposite sides of the framework body, and the framework holes are opposite to the through holes and are communicated with the through holes; the ball top is fixedly attached to the framework body and completely covers the framework hole, and the ball top and the framework body together completely cover the through hole; the first elastic piece and the second elastic piece both comprise elastic piece bodies, the first elastic piece further comprises a pad part extending from the elastic piece bodies to the direction close to the voice coil, and the pad part is electrically connected with the voice coil; its characterized in that, the ball top includes the ball top body and certainly ball top body periphery outwards extends and with the fixed edge part of skeleton body laminating, the ball top body is in orthographic projection on the skeleton body is whole to fall into in the skeleton hole, the edge part is close to one side of second elastic component extends and forms and is used for balancing the counter weight portion of the quality of pad portion, counter weight portion is towards keeping away from the direction of first elastic component extends.

2. The sounding device according to claim 1, wherein the bobbin further comprises a bobbin side wall extending from an outer periphery of the bobbin body in a direction of the magnetic circuit system, the bobbin side wall being disposed around and spaced apart from the voice coil; the pad portion comprises a first extension wall and a second extension wall, wherein the first extension wall is bent and extended in the direction of the vibrating diaphragm, the second extension wall is bent and extended in the direction of the voice coil, the first extension wall is far away from one side of the elastic piece body, the second extension wall is located on one side, close to the voice coil, of the framework side wall, the second extension wall is fixed on the framework body, and the second extension wall is electrically connected with the voice coil.

3. The sounder device according to claim 2, wherein the mass of the weight is equal to the mass of the second extending arm.

4. The sounding device according to claim 1, wherein the bobbin body includes an annular main body portion connected to the bobbin sidewall and an annular bobbin step formed by an inner peripheral edge of the main body portion being recessed toward the magnetic circuit, the main body portion is fixed to a side of the diaphragm close to the magnetic circuit, the bobbin step surrounds the bobbin hole, the dome is attached to a side of the bobbin step away from the magnetic circuit, and the voice coil is fixed to a side of the bobbin step close to the magnetic circuit.

5. The sounding device according to claim 4, wherein the skeleton step comprises a step side wall extending from the inner periphery of the main body to the magnetic circuit in a bending manner, and a step support wall extending from a side of the step side wall away from the main body to the basin frame in a bending manner, and the edge portion and the weight portion are attached to and fixed with the step support wall.

6. The sounder device according to claim 5, wherein the step support wall is rectangular in configuration, and the step support wall has a greater width on the same side as the second resilient member than on the same side as the first resilient member.

7. The sounding device as claimed in claim 5, wherein the bobbin body further comprises a bobbin fixing portion extending from a side of the step support wall close to the magnetic circuit system in a bending manner toward the voice coil, and the bobbin fixing portion is fixed to a side of the voice coil away from the magnetic circuit system.

8. The sounding device according to claim 4, wherein the diaphragm includes a vibrating portion, a folded ring portion extending from a periphery of the vibrating portion, and a fixing portion extending from a side of the folded ring portion away from the vibrating portion, the through hole is disposed through the vibrating portion, the main body portion is fixed to the vibrating portion, and the fixing portion is fixed to the frame.

9. The sounding device according to claim 1, wherein the elastic member comprises a first fixing arm fixed to the frame, a second fixing arm connected to one end of the side wall of the frame away from the diaphragm and spaced apart from the first fixing arm, and a resilient arm connected to the first fixing arm and the second fixing arm.

10. The sounding device according to claim 9, wherein the vibration system further includes an auxiliary diaphragm connected to a side of the elastic member body away from the diaphragm, the auxiliary diaphragm includes two auxiliary diaphragms respectively located at two opposite sides of the voice coil, one end of each auxiliary diaphragm is attached to the first fixing arm, and the other end of each auxiliary diaphragm is fixed to the second fixing arm.