WO2022062115A1

WO2022062115A1 - Sound production device

Info

Publication number: WO2022062115A1
Application number: PCT/CN2020/128312
Authority: WO
Inventors: 宋威; 张帆; 陶伟伟; 金鑫
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声光电科技(常州)有限公司
Priority date: 2020-09-23
Filing date: 2020-11-12
Publication date: 2022-03-31
Also published as: CN112261541A; CN112261541B

Abstract

The present invention provides a sound production device, comprising a basket, a vibration system and a magnetic circuit system. The vibration system comprises a vibrating diaphragm, a voice coil, a framework, a dome and elastic members, wherein the elastic members comprise a first elastic member and a second elastic member that are located on two opposite sides of the voice coil respectively, and the vibrating diaphragm is provided with a through hole; the framework comprises a framework body and a framework hole, and the framework hole and the through hole directly face each other and are in communication with each other; the dome is attached and fixed to the framework body and completely covers the framework hole, and the dome and the framework body completely cover the through hole together; each of the first elastic member and the second elastic member comprises an elastic member body, and the first elastic member further comprises a bonding pad portion; and the dome comprises a dome body and an edge portion attached and fixed to the framework body, the side of the edge portion close to the second elastic member extends to form a balance weight portion used for balancing the mass of the bonding pad portion, and the balance weight portion extends in the direction away from the first elastic member. Compared with the related art, the sound production device of the present invention is good in vibrating diaphragm symmetry and good in acoustic performance.

Description

sound device

technical field

The present invention relates to the field of sound and electricity, in particular to a sound-generating device used in portable electronic products.

Background technique

With the advent of the mobile Internet era, the number of smart mobile devices continues to rise. Among many mobile devices, mobile phones are undoubtedly the most common and portable mobile terminal devices. Sound-emitting devices for playing sound are widely used in smart mobile devices such as mobile phones. The vibration system and magnetic circuit system used in the sound-emitting device are directly related to the sound quality of the sound-emitting device.

A vibration system of a sound-emitting device in the related art includes a basin frame, a vibration system fixed on the basin frame, and a magnetic circuit system that drives the vibration system to emit sound; the vibration system includes a vibrating membrane fixed on the basin frame, driving the A voice coil that vibrates and emits sound, a skeleton respectively fixed to the diaphragm and the voice coil, and a first elastic member and a second elastic member that are respectively fixed to the basin frame and the end of the skeleton away from the diaphragm , the first elastic member and the second elastic member both include an elastic member body, and the first elastic member further includes a first extension wall that is bent and extended from the elastic member body to the direction of the diaphragm, and A second extension wall is bent and extended from the side of the first extension wall away from the elastic member body in the direction of the voice coil, the first extension wall is fixed to the frame side wall, and the second extension wall is The wall is fixed on the skeleton body, and the second extension wall is electrically connected with the lead wire of the voice coil.

However, in the sound-generating device of the related art, the voice coil has a rectangular structure, and the first elastic member and the second elastic member are respectively located on opposite sides of the voice coil. Compared with the second elastic member, the first elastic member has the first extension wall and the second extension wall for electrical connection with the lead wire of the voice coil, which increases the first extension wall and the second extension wall. Both the extension wall and the second extension wall are fixed to the frame, so that the mass of the diaphragm connected with the frame on the opposite sides of the voice coil is unbalanced, so that there is mass in the vibration system Asymmetry, thereby causing the amplitude swing of the diaphragm due to mass asymmetry, thereby reducing the acoustic performance of the sound-emitting device.

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

technical problem

The purpose of the present invention is to provide a sounding device with good diaphragm symmetry and good acoustic performance.

technical solutions

In order to achieve the above object, the present invention provides a sound-generating device, which includes a basin frame, a vibration system fixed on the basin frame, and a magnetic circuit system for driving the vibration system to emit sound; the vibration system includes a vibration system fixed on the basin frame. The diaphragm, the voice coil that drives the diaphragm to vibrate and sound, the skeleton connecting the voice coil to the diaphragm, the dome that is fitted and fixed to the skeleton, and the dome fixed to the basin frame and connected to the an elastic member connected to one end of the skeleton away from the vibrating membrane, the elastic member comprises a first elastic member and a second elastic member respectively located on opposite sides of the voice coil, and the vibrating membrane is provided with a through hole passing through it; The skeleton includes a skeleton body and a skeleton hole penetrating the skeleton body, the diaphragm and the voice coil are respectively fixed on opposite sides of the skeleton body, and the skeleton hole and the through hole are opposite to each other. connected; the dome is fitted and fixed to the skeleton body and completely covers the skeleton hole, the dome and the skeleton body together completely cover the through hole; the first elastic member and the Both of the two elastic members include an elastic member body, and the first elastic member further includes a pad portion extending from the elastic member body in a direction close to the voice coil, and the pad portion is electrically connected to the voice coil; The spherical top includes a spherical top body and an edge portion extending outward from the peripheral edge of the spherical top body and being fixed with the skeleton body, and the orthographic projection of the spherical top body on the skeleton body all falls into the In the skeleton hole, a side of the edge portion close to the second elastic member extends to form a counterweight portion for balancing the quality of the pad portion, and the counterweight portion faces away from the first elastic member extend.

Preferably, the skeleton further comprises a skeleton side wall extending from the outer peripheral edge of the skeleton body to the direction of the magnetic circuit system, the skeleton side wall is wound around the voice coil and is spaced from the voice coil; The pad portion includes a first extension wall bent and extended from the elastic member body to the direction of the diaphragm, and a direction from the first extension wall away from the elastic member body to the voice coil The second extension wall is bent and extended, the first extension wall is located on the side of the side wall of the frame close to the voice coil, the second extension wall is fixed on the frame body, and the second extension wall is connected to the frame body. The voice coil is electrically connected.

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

Preferably, the skeleton body includes an annular main body part connected to the skeleton side wall and an annular skeleton step formed by the inner periphery of the main body part concave in the direction of the magnetic circuit system, the main body part It is fixed on the side of the diaphragm close to the magnetic circuit system, the skeleton step encloses the skeleton hole, and the spherical top fits and fixes the side of the skeleton step away from the magnetic circuit system, so The voice coil is fixed on a side of the skeleton step close to the magnetic circuit system.

Preferably, the skeleton step includes a stepped side wall bent and extended from the inner peripheral edge of the main body portion in the direction of the magnetic circuit system, and a side of the stepped side wall away from the main body portion away from the basin The step support wall is bent and extended in the direction of the frame, and the edge portion and the counterweight portion are both attached and fixed to the step support wall.

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

Preferably, the skeleton body further includes a skeleton fixing portion that is bent and extended in the direction of the voice coil from the side of the stepped support wall close to the magnetic circuit system, the skeleton fixing portion is fixed to the voice coil away from one side of the magnetic circuit system.

Preferably, the vibrating membrane includes a vibrating portion, a ring portion bent and extended from a peripheral edge of the vibrating portion, and a fixing portion bent and extended from a side of the ring portion away from the vibrating portion. A hole is provided through the vibrating part, the main body part is fixed to the vibrating part, and the fixing part is fixed to the basin frame.

Preferably, the elastic member body comprises a first fixing arm fixed to the basin frame, a second fixing arm connected to an end of the side wall of the frame away from the vibrating membrane and spaced from the first fixing arm, and connecting The elastic arms of the first fixed arm and the second fixed arm.

Preferably, the vibration system further includes an auxiliary diaphragm connected to the side of the elastic member body away from the diaphragm, the auxiliary diaphragm includes two and located on opposite sides of the voice coil, each One end of the auxiliary diaphragm is attached and fixed to the first fixing arm, and the other end of the auxiliary diaphragm is fixed to the second fixing arm.

beneficial effect

Compared with the related art, in the sound-emitting device of the present invention, the skeleton is provided with a skeleton body and a skeleton hole passing through the skeleton body, and then the dome is attached and fixed to the skeleton body and completely covers the skeleton hole, so that the ball can be completely covered. The top and the skeleton body together completely cover the through hole. And the area of the dome that is attached to the frame body on the same side of the second elastic member is larger than the area on the same side of the first elastic member, so that the vibration system corresponds to the first elastic member One side is in mass balance with the side corresponding to the second elastic member. The mass increase is caused by the connection between the pad part and the skeleton. This structure increases the mass on the opposite sides of the voice coil of the balanced vibration system through the width of the skeleton body on the same side of the second elastic member and the fixed part of the dome, so as to make the diaphragm. The masses on the opposite sides of the voice coil are balanced, thereby reducing the risk of mass asymmetry in the vibrating system, thereby reducing the amplitude swing of the diaphragm due to mass asymmetry, so that the acoustic performance of the sound-generating device is good .

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained from these drawings, wherein:

Fig. 1 is the three-dimensional structure schematic diagram of the sound-emitting device of the present invention;

2 is an exploded view of a partial three-dimensional structure of the sound-emitting device of the present invention;

Fig. 3 is a sectional view along line A-A in Fig. 1;

Fig. 4 is the partial enlarged schematic diagram of part B in Fig. 3;

Fig. 5 is the partial enlarged schematic diagram of C part in Fig. 3;

6 is an assembly diagram of a basin frame, a voice coil, a skeleton and a first elastic member of the sounding device of the present invention;

FIG. 7 is a schematic three-dimensional structure diagram of the skeleton of the sound-emitting device 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 with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIGS. 1-7 , the present invention provides a sound-emitting device 100 , comprising a basin frame 1 , a vibration system 2 and a magnetic circuit system 3 respectively fixed to the basin frame 1 , and the magnetic circuit system 3 has a magnetic gap 30 , The magnetic circuit system 3 is used to drive the vibration system 2 to vibrate and sound.

In this embodiment, the basin frame 1 is rectangular.

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

The diaphragm 21 is fixed to the basin frame 1 . The diaphragm 21 is used for vibrating and producing sound. The vibrating membrane 21 includes a through hole 20 penetrating through it, a vibrating portion 213 , a ring portion 212 bent and extended from the periphery of the vibrating portion 213 , and a ring portion 212 away from the vibrating portion 213 . The fixed portion 211 is bent sideways. Specifically, the through hole 20 is disposed through the vibrating portion 213 . The fixing portion 211 is fixed to the basin 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 produce sound.

The frame 23 includes a frame body 231 , a frame side wall 232 extending from the outer periphery of the frame body 231 to the direction of the magnetic circuit system 3 , and a frame hole 230 passing through the frame body 231 .

The frame 23 connects the voice coil 22 to the diaphragm 21 . The skeleton body 231 is used to connect the diaphragm 21 and the voice coil 22, so that the voice coil 22 drives the diaphragm 21 to vibrate and produce sound. Specifically, the diaphragm 21 and the voice coil 22 are respectively fixed on opposite sides of the frame body 231 . That is, the frame body 231 is fixed to the side of the vibration part 213 close to the magnetic circuit system 3 , and the voice coil 22 is fixed to the side of the frame body 231 close to the magnetic circuit system 3 .

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

The main body portion 2311 is connected to the frame side wall 232 . The main body portion 2311 is annular. The main body portion 2311 is fixed to the vibration portion 213 . Specifically, the main body portion 2311 is fixed to the side of the diaphragm 21 close to the magnetic circuit system 3 .

The skeleton step 2312 is formed by the inner peripheral edge of the main body portion 2311 being recessed in the direction of the magnetic circuit system 3 . The frame step 2312 surrounds the frame hole 230 . The frame steps 2312 are used to fix the dome 24 . The dome 24 is attached to the side of the frame 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 2312 a bent and extended from the inner periphery of the main body portion 2311 toward the magnetic circuit system 3 , and a step side wall 2312 a away from the main body portion 2311 by the step side wall 2312 a. A step supporting wall 2312b extending laterally away from the basin frame 1 is bent and extended. This structure makes it easier to assemble the frame step 2312 when it is used to fit the dome 24 , and makes the sound-emitting device 100 compact in structure, which is beneficial to a miniaturized design with a reduced thickness.

In order to fix the voice coil 22 on the skeleton step 2312 and allow the voice coil 22 to be inserted into the magnetic gap 30 better, ensure that the magnetic circuit system 3 communicates with the skeleton 23 and the ball. The skeleton body 231 further includes a skeleton fixing portion 2313 according to the interval of the top 24 . The frame fixing portion 2313 is bent and extended in the direction of the voice coil 22 from the side of the step support wall 2312b close to the magnetic circuit system 3 . The frame fixing portion 2313 is fixed to the side of the voice coil 22 away from the magnetic circuit system 3 .

The frame side wall 232 is wound around the voice coil 22 and is spaced from the voice coil 22 . The frame side wall 232 is used to connect the first elastic member 41 and the second elastic member 42 respectively.

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

The dome 24 includes a dome body 241 , an edge portion 242 extending outward from the periphery of the dome body 241 , and a weight portion 243 .

The orthographic projections of the spherical top body 241 on the skeleton body 231 all fall into the skeleton hole 230 .

The edge portion 242 extends outward from the periphery of the dome body 241 . The dome 24 is attached and fixed to the frame 23 . Specifically, the edge portion 242 is attached and fixed to the frame body 231 . The dome 24 is attached and fixed to the frame body 231 and completely covers the frame 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 from one side of the edge portion 242 .

Specifically, the edge portion 242 and the weight portion 243 are both attached to and fixed to the step support wall 2312b. In this structure, the edge portion 242 and the counterweight portion 243 of the dome 24 cooperate with the frame step 2312 , so that the edge portion 242 and the counterweight portion 243 of the dome 24 are The bonding state with the skeleton step 2312 is easy to control, thereby improving the reliability of the diaphragm 21, and at the same time, it does not need to occupy the space of the sound-emitting device 100 in the vibration direction of the diaphragm 21, that is to say, no additional increase is required. The space of the sound-emitting device 100 in its thickness direction.

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

The first elastic member 41 is fixed to one end of the basin frame 1 and the frame 23 away from the 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 in a direction close to the voice coil 22 .

The elastic body 401 includes a first fixing arm 4011 fixed to the basin frame 1 , and a second fixing arm 4011 connected to an end of the frame side wall 232 away from the diaphragm 21 and spaced from the first fixing arm 4011 . The arm 4012 and the elastic arm 4013 connecting the first fixed arm 4011 and the second fixed 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 swing.

The pad portion 411 includes a first extension wall 4111 bent and extended from the elastic member body 401 in the direction of the diaphragm 21 , and a side from the first extension wall 4111 away from the elastic member body 401 . The second extension wall 4112 is bent and extended in the direction of the voice coil 22 .

The first extension wall 4111 is located on the side of the skeleton side wall 232 close to the voice coil 22 .

The second extension 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 extension wall 4112 is electrically connected to the voice coil 22 . On the one hand, the structure of the first elastic member 41 is used to improve the vibration strength and balance of the vibration system 2 and suppress the swing, and on the other hand, the voice coil 22 is led out to connect to an external power source, so as to avoid the lead structure of the voice coil to lead out the power source. Risk of easy breakage of the voice coil leads.

The second elastic member 42 is fixed to one end of the basin frame 1 and the frame 23 away from the 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 swing.

In this embodiment, the voice coil 22 has a rectangular structure. The first elastic member 41 and the second elastic member 42 are respectively located on opposite sides of the voice coil 22 . On the one hand, this structure is used to strengthen the vibration effect of the diaphragm 21 and improve the acoustic performance of the sound-generating device 100 , and on the other hand, it is used to balance the swing of the vibration system 2 and improve the stability of the sound-generating device 100 .

Since the first extension wall 4111 and the second extension wall 4112 are respectively fixed to the frame 23 , and the frame is connected to the diaphragm 21 , the diaphragm 21 connected to the frame 23 is formed. Mass imbalance on opposite sides of the voice coil. In order to balance the masses of the diaphragm 21 on the opposite sides of the voice coil, the sound-generating device 100 is designed to combine the frame 23 and the dome 24 on one side of the second elastic member 42 . The mass of is increased, so that the first extension wall 4111 and the second extension wall 4112 are disposed symmetrically with respect to the short axis mass of the skeleton body 231 . The structure is specifically:

The weight portion 243 is formed by extending from the 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 is used to balance the mass of the pad portion 411 . Specifically, the mass of the counterweight portion 243 is equal to the mass of the second extension arm 4112 .

The ball top 24 is provided with the weight portion 243 located on the same side of the second elastic member 42 on the edge portion 242 , so that the weight portion 243 has the same mass as the pad portion 411 , that is, In other words, the area of the dome 24 attached to the frame body 231 on the same side of the second elastic member 42 is larger than the area on the same side of the first elastic member 41 , so that the vibration system 2 corresponds to One side of the first elastic member 41 is in mass balance with the side corresponding to the second elastic member 42 . That is, the stepped support wall 2312b has a rectangular structure, and the width of the stepped support wall 2312b on the same side of the second elastic member 42 is greater than the width on the same side of the first elastic member 41 .

In the above structure, through the spherical top 24 provided with the stepped support wall 2312b, the parts on the opposite sides of the parts on the opposite sides have different abutment areas. That is, the edge portion 242 and the weight portion 243 are attached to the edge portion 242 and the weight portion 243 when the step support wall 2312b is located on the same side of the second elastic member 42 , and the other side of the step support wall 2312b is located on the first elastic member 42 . The same side of the piece 41 only abuts the edge portion 242 . This structure adjusts the mass of the frame body 231 on the opposite sides of the second elastic member 42 and the first elastic member 41 respectively, and at the same time the first extension wall 4111 and the second extension wall 4112 pass through The frame 23 is connected to the opposite side of the diaphragm 21 , so that the masses of the diaphragm 21 on the opposite sides of the voice coil 22 are balanced, thereby reducing the mass asymmetry of the vibration system 2 Therefore, the amplitude swing of the diaphragm 21 caused by the mass asymmetry is reduced, so that the amplitude consistency of the diaphragm 21 is good, so that the acoustic performance of the sound-emitting device 100 is good.

The auxiliary diaphragm 25 is connected to the auxiliary diaphragm 25 on the side of the elastic body 401 away from the diaphragm 21 . Specifically, the auxiliary diaphragms 25 include two and are located on opposite sides of the voice coil 22 respectively. One end of each auxiliary diaphragm 25 is attached and fixed to the first fixing arm 4011 . The other end of the membrane 25 is fixed to the second fixing arm 4012 . The auxiliary diaphragm 25 is used to improve the vibration strength and balance of the vibration system 2 and restrain swing.

The magnetic circuit system 3 includes a magnetic yoke 31 opposite to the diaphragm 21 , a main magnetic steel 32 and a secondary magnetic steel 33 respectively fixed to the magnetic yoke 31 , stacked and fixed near the main magnetic steel 32 . The main pole core 34 on the side of the vibrating membrane 21 and the secondary pole core 35 on the side of the secondary magnetic steel 33 close to the vibrating membrane 21 are stacked and fixed.

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

Both the secondary pole core 35 and the secondary magnetic steel 33 are disposed on the inner side of the skeleton side wall 232 at intervals.

Compared with the related art, in the sound-emitting device of the present invention, the skeleton is provided with a skeleton body and a skeleton hole passing through the skeleton body, and then the dome is attached and fixed to the skeleton body and completely covers the skeleton hole, so that the ball can be completely covered. The top and the skeleton body together completely cover the through hole. And the area of the dome that is attached to the frame body on the same side of the second elastic member is larger than the area on the same side of the first elastic member, so that the vibration system corresponds to the first elastic member One side is in mass balance with the side corresponding to the second elastic member. Due to the connection between the pad part and the skeleton, the mass increases. This structure increases the mass of the opposite sides of the voice coil of the balanced vibration system through the width of the skeleton body on the same side of the second elastic member and the fixed part of the dome, so as to make the diaphragm. The masses on the opposite sides of the voice coil are balanced, thereby reducing the risk of mass asymmetry in the vibrating system, thereby reducing the amplitude swing of the diaphragm caused by the mass asymmetry, so that the acoustic performance of the sound-generating device is good .

The above are only the embodiments of the present invention. It should be pointed out 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 belong to the present invention. scope of protection.

Claims

A sound-generating device includes a basin frame, a vibration system fixed on the basin frame, and a magnetic circuit system for driving the vibration system to emit sound; the vibration system includes a vibrating membrane fixed on the basin frame, driving the vibration film A voice coil that vibrates and emits sound, a skeleton connecting the voice coil to the diaphragm, a dome that is fitted and fixed to the skeleton, and fixed to the basin frame and connected to the end of the skeleton away from the diaphragm The elastic member includes a first elastic member and a second elastic member respectively located on opposite sides of the voice coil, and the diaphragm is provided with a through hole passing through it; the frame includes a frame body and a through hole. The skeleton hole of the skeleton body, the diaphragm and the voice coil are respectively fixed on opposite sides of the skeleton body, the skeleton hole and the through hole are facing and communicated with each other; the dome is attached to each other; It is fixed on the frame body and completely covers the frame hole, and the dome and the frame body together completely cover the through hole; the first elastic member and the second elastic member both include elastic member bodies , the first elastic member further includes a pad portion extending from the elastic member body to the direction close to the voice coil, and the pad portion is electrically connected to the voice coil; it is characterized in that the dome includes The spherical top body and the edge portion extending outward from the peripheral edge of the spherical top body and being fixed with the skeleton body, the orthographic projections of the spherical top body on the skeleton body all fall into the skeleton hole, A side of the edge portion close to the second elastic member extends to form a weight portion for balancing the mass of the pad portion, and the weight portion extends in a direction away from the first elastic member.
The sound-emitting device according to claim 1, wherein the frame further comprises a frame side wall extending from the outer periphery of the frame body to the direction of the magnetic circuit system, the frame side wall being wound around the The voice coil is spaced apart from the voice coil; the pad portion includes a first extension wall that is bent and extended from the elastic body to the direction of the vibrating membrane, and a first extension wall that is away from the elastic A second extension wall is bent and extended toward the voice coil from one side of the component body, the first extension wall is located on the side of the skeleton side wall close to the voice coil, and the second extension wall is fixed to the the skeleton body, the second extension wall is electrically connected with the voice coil.
The sound-generating device according to claim 2, wherein the mass of the weight portion is equal to the mass of the second extension arm.
The sound-generating device according to claim 1, wherein the skeleton body comprises a ring-shaped main body part connected to the side wall of the skeleton, and is formed by an inner peripheral edge of the main body part concave in the direction of the magnetic circuit system The main body part is fixed on the side of the diaphragm close to the magnetic circuit system, the skeleton step is surrounded by the skeleton hole, and the dome is fitted and fixed to the skeleton step On the side away from the magnetic circuit system, the voice coil is fixed on the side of the skeleton step close to the magnetic circuit system.
The sound-generating device according to claim 4, wherein the skeleton step comprises a step side wall bent and extended from the inner periphery of the main body to the direction of the magnetic circuit system, and a step side wall extending away from the One side of the main body portion is bent and extended in a direction away from the basin frame, and the edge portion and the counterweight portion are both attached and fixed to the stepped support wall.
The sounding device according to claim 5, wherein the stepped support wall has a rectangular structure, and the width of the stepped support wall on the same side of the second elastic member is greater than that on the same side of the first elastic member width.
The sound-generating device according to claim 5, wherein the skeleton body further comprises a skeleton fixing portion that is bent and extended in the direction of the voice coil from the side of the stepped support wall close to the magnetic circuit system, so The frame fixing part is fixed on a side of the voice coil away from the magnetic circuit system.
The sound-generating device according to claim 4, wherein the vibrating film comprises a vibrating portion, a ring portion bent and extended from the periphery of the vibrating portion, and a ring portion that is far away from the vibrating portion by the ring portion. The fixing part is bent and extended at the side, the through hole is arranged through the vibrating part, the main body part is fixed to the vibrating part, and the fixing part is fixed to the basin frame.
The sound-generating device according to claim 1, wherein the elastic member body comprises a first fixing arm fixed to the basin frame, connected to an end of the side wall of the frame away from the diaphragm, and connected to the first fixing arm. A second fixed arm spaced apart from the fixed arms, and an elastic arm connecting the first fixed arm and the second fixed arm.
The sound-generating device according to claim 9, wherein the vibration system further comprises an auxiliary diaphragm connected to the side of the elastic member body away from the diaphragm, and the auxiliary diaphragm includes two auxiliary diaphragms located respectively at On opposite sides of the voice coil, one end of each of the auxiliary diaphragms is attached and fixed to the first fixing arm, and the other end of the auxiliary diaphragm is fixed to the second fixing arm.