Sound production device

Abstract

The application provides a sound production device, which comprises a ring-shaped basket, a vibration system and a magnetic circuit system, the basket comprises a bottom wall and a side wall extending from the periphery of the bottom wall, the vibration system comprises a diaphragm fixed to the basket, a voice coil inserted into a magnetic gap and driving the diaphragm to vibrate to produce sound, an elastic support assembly arranged opposite to the diaphragm and spaced from the diaphragm and connected with the voice coil, and a ring-shaped fixing ring for fixing the elastic support assembly to the basket, the periphery of the diaphragm is fixed to the side wall of the basket, the elastic support assembly is arranged outside the magnetic circuit system and spaced from the magnetic circuit system, and the fixing ring is arranged around the magnetic circuit system, the basket is made of metal material, the fixing ring is a metal ring, and the fixing ring is fixed to the side wall of the basket by welding. Compared with the related art, the sound production device has high overall strength and high reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electro-acoustic conversion, and in particular to a sound production device for use in portable mobile electronic products.

BACKGROUND

[0002] Sound production devices are widely used in portable mobile electronic products, such as mobile phones, to convert audio signals into sound for playback. Sound production devices have high loudness and good low-frequency sound effects.

[0003] A sound production device in the related art includes a basket, a vibration system fixed to the basket, and a magnetic circuit system for driving the vibration system to vibrate and produce sound. The vibration system includes a diaphragm fixed to the basket, a voice coil inserted into a magnetic gap and driving the diaphragm to vibrate and produce sound, and an elastic support assembly arranged opposite the diaphragm and connected to the voice coil. The elastic support assembly surrounds the outside of the magnetic circuit system and is spaced apart from the magnetic circuit system. To facilitate assembly, the basket is divided into a basket body and a basket extension part stacked on the basket body. The vibration system is fixed to the basket extension part, the magnetic circuit system is fixed to the basket body, and the basket extension part is assembled to the basket body.

[0004] However, the elastic support assembly of the sound production device in the related art is directly attached and fixed to the basket by a glueing method. The overall strength of the sound production device is not high, and in the event of a drop of the sound production device, the elastic support assembly is easily separated from the basket, thus the reliability of the sound production device is low.

[0005] Therefore, it is necessary to provide a new sound production device to solve the above technical problems.

SUMMARY

[0006] The present application aims to provide a sound production device with high overall strength and high reliability.

[0007] In order to achieve the above object, the application provides a sound production device, which comprises a frame, a vibration system fixed to the frame, and a magnetic circuit system with a magnetic gap for driving the vibration system to vibrate and produce sound, wherein the vibration system comprises a diaphragm fixed to the frame, a voice coil inserted into the magnetic gap and driving the diaphragm to vibrate and produce sound, and an elastic support assembly arranged opposite to the diaphragm and spaced from the diaphragm and connected with the voice coil, the elastic support assembly being arranged outside and spaced from the magnetic circuit system; the frame comprises a frame bottom wall and a frame side wall extended from the peripheral edge of the frame bottom wall, and the peripheral edge of the diaphragm is fixed to the frame side wall; the vibration system further comprises a fixing ring in the shape of a ring for fixing the elastic support assembly to the frame, and the fixing ring is arranged around the magnetic circuit system; the frame is made of metal material, and the fixing ring is a metal ring which is fixed to the frame side wall by welding.

[0008] Preferably, the frame side wall comprises a first frame side wall connected to the frame bottom wall and a frame extension wall in the shape of a ring stacked on the first frame side wall, and the peripheral edge of the diaphragm is fixed to the inner peripheral side of the frame extension wall, and the fixing ring is fixed to the frame extension wall by welding.

[0009] Preferably, the diaphragm comprises a diaphragm fixed part fixed to the magnetic circuit system, a ball top surrounding the diaphragm fixed part, and a folded ring surrounding the ball top, the inner peripheral side of the ball top is fixed to the side of the diaphragm fixed part close to the folded ring, and the outer peripheral side of the ball top is fixed to the side of the folded ring close to the diaphragm fixed part; the folded ring comprises a folded ring body fixed to the outer peripheral side of the ball top, a folded ring fixed part extended from the outer peripheral side of the folded ring body towards the inner peripheral side of the frame extension wall, and a folded ring support part extended from the folded ring fixed part along the inner peripheral side of the frame extension wall towards the elastic support assembly, and the folded ring fixed part and the folded ring support part are both fixed to the inner peripheral side of the frame extension wall.

[0010] Preferably, the frame body comprises a frame bottom wall and a first frame side wall extended from the peripheral edge of the frame bottom wall, and the frame extension wall is stacked and fixed to the frame extension wall, and the magnetic circuit system is supported and fixed to the frame bottom wall.

[0011] Preferably, the voice coil is in the shape of a rectangle, the elastic support assembly comprises two elastic support assemblies, the two elastic support assemblies are arranged at opposite sides of the voice coil, and the position where the fixing ring is welded to the frame extension wall is located between the two elastic support assemblies.

[0012] Preferably, the two elastic support assemblies are respectively located at opposite sides of the short axis of the voice coil, and the position where the fixing ring is welded to the frame extension wall is respectively located at opposite sides of the long axis of the voice coil.

[0013] Preferably, the elastic support assembly comprises an elastic member opposite to and spaced from the diaphragm, and an auxiliary diaphragm arranged on the side of the elastic member away from the diaphragm, the side of the elastic member close to the yoke is attached to the side of the fixing ring away from the diaphragm, and the side of the elastic member away from the yoke is connected to the voice coil; the side of the auxiliary diaphragm close to the yoke is attached to the side of the fixing ring away from the diaphragm, and the side of the auxiliary diaphragm away from the yoke is connected to the voice coil; the side of the elastic member away from the yoke and the side of the auxiliary diaphragm away from the yoke are arranged in a spaced manner.

[0014] Preferably, the folded ring fixing part is in a rectangular structure with rounded corners, the folded ring fixing part comprises four straight sides and four corners respectively connecting two adjacent straight sides, and the folded ring support part is located at the corner position and is glued and fixed to the extension wall of the yoke.

[0015] Preferably, the vibration system further comprises a framework fixed to the diaphragm, one end of the framework extends into the magnetic gap and is fixedly connected to the voice coil, and the other end of the framework extends towards the elastic support assembly and is fixedly connected to the elastic support assembly.

[0016] Preferably, the fixing ring comprises a ring-shaped fixing ring body and a fixing ring fixing part bent and extended from the inner circumferential side of the fixing ring body away from the diaphragm, the fixing ring body is fixed to the extension wall of the yoke by welding, and the fixing ring fixing part is fixed to the auxiliary diaphragm; the auxiliary diaphragm comprises an auxiliary diaphragm folded ring, an auxiliary diaphragm first fixing part bent and extended from the inner side of the auxiliary diaphragm folded ring towards the direction close to the magnetic circuit system, an auxiliary diaphragm first extension part extended from the auxiliary diaphragm first fixing part towards the direction close to the diaphragm, an auxiliary diaphragm second fixing part bent and extended from the outer side of the auxiliary diaphragm folded ring towards the direction close to the yoke, and an auxiliary diaphragm second extension part extended from the auxiliary diaphragm second fixing part towards the direction close to the diaphragm; the auxiliary diaphragm first fixing part is fixed to the end of the framework away from the diaphragm, and the auxiliary diaphragm first extension part is attached and fixed to the side of the framework close to the yoke; the auxiliary diaphragm second fixing part is fixed to the side of the fixing ring fixing part away from the diaphragm, the inner side of the auxiliary diaphragm second extension part is attached and fixed to the outer side of the fixing ring fixing part, and the side of the auxiliary diaphragm second extension part close to the diaphragm is abutted and fixed to the side of the fixing ring body away from the diaphragm; the elastic member comprises a first fixing arm fixed to the side of the fixing ring body close to the diaphragm, a second fixing arm fixed to the framework, and an elastic arm connecting the first fixing arm and the second fixing arm, and the second fixing arm is spaced from the auxiliary diaphragm.

[0017] Preferably, the skeleton includes a skeleton body in a ring shape, a skeleton first fixing part extending from the inner periphery of the skeleton body to the voice coil direction, and a skeleton second fixing part extending from the outer periphery of the skeleton body to the elastic support assembly; the skeleton body is fixed to the folding ring body, the skeleton first fixing part is fixedly connected with the voice coil; the auxiliary diaphragm first fixing part is fixed to the skeleton second fixing part, the auxiliary diaphragm first extending part is fixed to one side of the skeleton second fixing part close to the yoke; the skeleton second fixing part is provided with a skeleton hole penetrating therethrough, and the second fixing arm penetrates through the skeleton hole and is fixed to the skeleton second fixing part.

[0018] Compared with the related art, in the sound generating device, the yoke is made of metal material, the fixing ring is a metal ring, and the fixing ring is fixed to the side wall of the yoke by welding, so that the elastic support assembly is fixed to the yoke through the fixing ring. The structure is simple, the elastic support assembly and the fixing ring are easily fixed to the yoke, no additional separate structure support features need to be made on the fixing ring or the yoke to increase parts or process procedures, so that the assembly process of the sound generating device is simple, the elastic support assembly, the fixing ring and the yoke of the sound generating device form a solid overall structure, the stability of the vibration system of the sound generating device when falling is enhanced, the overall strength of the sound generating device is improved, and the sound generating device has high reliability. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the sound generating device of the present application;

[0021] Figure 2 It is a partial three-dimensional structure exploded view of the sound generating device of the present application;

[0022] Figure 3 It is a schematic diagram of the cross section of line A-A in FIG. Figure 1

[0023] Figure 4 It is a schematic diagram of the cross section of line B-B in FIG. Figure 1

[0024] Figure 5 It is an enlarged view of the part shown in FIG. Figure 4 ​​​

[0025] Figure 6 Part of the three-dimensional structure assembly diagram of the sound production device of the present application;

[0026] Figure 7 Three-dimensional structure diagram of the auxiliary diaphragm of the sound production device of the present application;

[0027] Figure 8 Three-dimensional structure diagram of the fixing ring of the sound production device of the present application.

DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Please refer to Figures 1-8 The present application provides a sound production device 100.

[0030] The sound production device 100 comprises a basket 1, a vibration system 2 fixed to the basket 1, and a magnetic circuit system 3 for driving the vibration system 2 to vibrate and produce sound. The magnetic circuit system 3 has a magnetic gap 30.

[0031] The basket 1 is annular. The basket 1 comprises a basket bottom wall 11 and a basket side wall 12 extending from the peripheral edge of the basket bottom wall 11.

[0032] In the present embodiment, the magnetic circuit system 3 is supported and fixed to the basket bottom wall 11. Of course, it is not limited to this, and the magnetic circuit system 3 can also be fixed to the inner circumferential side of the basket side wall 12.

[0033] The basket side wall 12 can be a one-piece structure. In the present embodiment, the basket side wall 12 is a separate structure, specifically, the basket side wall 12 comprises a basket first side wall 121 connected to the basket bottom wall 11 and a basket extension wall 122 in the form of a ring stacked on the basket first side wall 121. This separate structure is beneficial to the assembly and manufacturing of the sound production device 100.

[0034] The vibration system 2 comprises a diaphragm 21 fixed to the basket 1, a voice coil 22 inserted into the magnetic gap 30 and driving the diaphragm 21 to vibrate and produce sound, an elastic support assembly 23 arranged opposite to the diaphragm 21 and spaced apart from the diaphragm 21 and connected to the voice coil 22, a skeleton 24 fixed to the diaphragm 21, and a fixing ring 25 in the form of a ring for fixing the elastic support assembly 23 to the basket 1. The fixing ring 25 surrounds the magnetic circuit system 3.

[0035] In this embodiment, the outer periphery of the diaphragm 21 is fixed to the inner periphery side of the yoke side wall 12. That is, the outer periphery of the diaphragm 21 is fixed to the yoke first side wall 121 through the yoke extension wall 122.

[0036] Specifically, the diaphragm 21 includes a diaphragm fixing portion 211 fixed to the magnetic circuit system 3, a dome 212 surrounding the diaphragm fixing portion 211, and a folded ring 213 surrounding the dome 212.

[0037] The diaphragm fixing portion 211 is used to fix the diaphragm to the magnetic circuit system 3. In this embodiment, the diaphragm fixing portion 211 is fixed to the magnetic circuit system 3. Of course, it is not limited to this, and the diaphragm fixing portion 211 can also be annular, and the diaphragm fixing portion 211 is fixed to the magnetic circuit system 3.

[0038] The dome 212 is annular. The dome 212 is used to realize the vibration sound of the diaphragm 21. Specifically, the inner periphery side of the dome 212 is fixed to one side of the diaphragm fixing portion 211 close to the folded ring 213, and the outer periphery side of the dome 212 is fixed to one side of the folded ring 213 close to the diaphragm fixing portion 211.

[0039] The folded ring 213 includes a folded ring body 2131 fixed to the outer periphery side of the dome 212, a folded ring fixing portion 2132 bent and extended from the outer periphery side of the folded ring body 2131 to the inner periphery side of the yoke extension wall 122, and a folded ring support portion 2133 extended from the folded ring fixing portion 2132 along the inner periphery side of the yoke extension wall 122 to the direction of the elastic support assembly 23.

[0040] The folded ring fixing portion 2132 is fixed to the inner periphery side of the yoke extension wall 122. In this embodiment, the folded ring fixing portion 2132 is extended from the outer periphery side of the folded ring body 2131 along the inner periphery side of the yoke extension wall 122 to the direction away from the elastic support assembly 23. This structure makes the combined area of the folded ring fixing portion 2132 and the yoke 1 larger, and the fixed structure formed is more firm, so that the overall strength of the sound generating device 100 is high and the reliability is high.

[0041] The fold ring support part 2133 supports the elastic support assembly 23 fixed away from the bottom wall 11 of the yoke 1. The fold ring support part 2133 is used for the elastic support assembly 23 to be fixed to the yoke 1. The fold ring support part 2133 extends from the fold ring fixing part 2132 along the inner circumferential side of the yoke extension wall 122 to the direction of the elastic support assembly 23. Among them, the fold ring support part 2133 is fixed to the inner circumferential side of the yoke extension wall 122. This structure is beneficial to increase the combined area of the fold ring support part 2133 and the yoke 1, so that the overall strength of the sound generating device 100 is high and the reliability is high. This structure is also beneficial to the manufacture and assembly of the sound generating device 100

[0042] More preferably, the fold ring fixing part 2132 is a rectangular structure with rounded corners 2132b, and the fold ring fixing part 2132 includes four straight sides 2132a and four rounded corners 2132b respectively connecting two adjacent straight sides 2132a. The fold ring support part 2133 is located at the position of the rounded corner 2132b. That is, the fold ring support part 2133 is formed by extending from the position of the rounded corner 2132b of the fold ring fixing part 2132. This structure makes full use of the space between the diaphragm 21 and the yoke 1 at the part where the rounded corner 2132b is located, so that the combined area of the fold ring support part 2133 and the yoke 1 is large, and the stability of the vibration system 2 when the sound generating device 100 falls is enhanced, thereby making the overall strength of the sound generating device 100 high and the reliability high.

[0043] In this embodiment, the fold ring support part 2133 is glued and fixed to the yoke extension wall 13. This structure is beneficial to the fixation and sealing of the diaphragm 21 and the yoke 1, so that the overall strength of the sound generating device 100 is high and the reliability is high.

[0044] The voice coil 22 is inserted and suspended in the magnetic gap 30 to drive the diaphragm 21 to sound.

[0045] The elastic support assembly 23 is arranged between the bottom wall 11 of the yoke 1 and the diaphragm 21. Specifically, the elastic support assembly 23 surrounds the outside of the magnetic circuit system 3 and is spaced from the magnetic circuit system 3. The elastic support assembly 23 is used to enhance the vibration effect of the diaphragm 21 on the one hand, and to improve the acoustic performance of the sound generating device 100, and on the other hand, to balance the swing of the vibration system 2 and improve the stability of the sound generating device 100.

[0046] Specifically, the elastic support assembly 23 includes an elastic member 231 opposite and spaced from the diaphragm 21, and an auxiliary diaphragm 232 arranged on the side of the elastic member 231 away from the diaphragm 21.

[0047] The elastic member 231 includes a first fixed arm 2311 fixed to the fixed ring body 251 near the side of the diaphragm 21, a second fixed arm 2312 fixed to the skeleton 24, and an elastic arm 2313 connecting the first fixed arm 2311 and the second fixed arm 2312. The second fixed arm 2312 is spaced from the auxiliary diaphragm 232

[0048] In this embodiment, the elastic member 231 is a flexible circuit board electrically connected to the voice coil 22. That is, the elastic member 231 also simultaneously serves as a function of providing an electrical signal to the lead wire of the voice coil 22, avoiding the introduction of an electrical signal to the voice coil 22 through a lead wire structure, i.e., avoiding the risk of disconnection, and improving the reliability of the sound generating device 100.

[0049] The auxiliary diaphragm 232 includes an auxiliary diaphragm folded ring 2321, an auxiliary diaphragm first fixed part 2322 bent and extended from the inner side of the auxiliary diaphragm folded ring 2321 to the direction close to the magnetic circuit system 3, an auxiliary diaphragm first extension part 2323 extended from the auxiliary diaphragm first fixed part 2322 to the direction close to the diaphragm 21, an auxiliary diaphragm second fixed part 2324 bent and extended from the outer side of the auxiliary diaphragm folded ring 2321 to the direction close to the basket 1, and an auxiliary diaphragm second extension part 2325 extended from the auxiliary diaphragm second fixed part 2324 to the direction close to the diaphragm 21.

[0050] In this embodiment, the fixed ring 25 includes a fixed ring body 251 in the form of a ring and a fixed ring fixed part 252 bent and extended from the inner circumferential side of the fixed ring body 251 to the direction away from the diaphragm 21.

[0051] The basket 1 is made of a metal material, the fixed ring 25 is a metal ring, and the fixed ring 25 is fixed to the basket side wall 12 by welding. Specifically, the fixed ring body 251 is fixed to the basket extension wall 122 by welding. This structure is simple, easy to fix the elastic support assembly 23 and the fixed ring 25 to the basket, and does not need to additionally and separately make a structural support feature on the fixed ring or the basket to increase parts or process procedures, thereby simplifying the assembly process of the sound generating device 100, and making the elastic support assembly 23, the fixed ring 25, and the basket 1 of the sound generating device 100 form a solid overall structure, improving the overall strength of the sound generating device 100, and enhancing the stability of the vibration system 2 when the sound generating device 100 falls, thereby making the sound generating device 100 highly reliable.

[0052] The fixed ring fixed part 252 is fixed to the auxiliary diaphragm 232.

[0053] In the embodiment, the voice coil 22 has a rectangular structure; the elastic support assembly 23 includes two; the two elastic support assemblies 23 are arranged at opposite sides of the voice coil 22. The welding position of the fixed ring 25 and the yoke extension wall 122 is located between the two elastic support assemblies 23. The welding position can facilitate the assembly of the sound generating device 100, and the fixed position of the elastic support assembly 23 and the fixed ring 25 does not affect. The welding position of the fixed ring 25 and the yoke extension wall 122 facilitates assembly and prevents damage to the elastic support assembly 23 during welding, enhances the overall strength of the yoke 1 in the fixed ring 25, and improves the reliability of the sound generating device 100.

[0054] More preferably, the two elastic support assemblies 23 are respectively located at opposite sides of the short axis of the voice coil 22, and the welding position of the fixed ring 25 and the yoke extension wall 122 is respectively located at opposite sides of the long axis of the voice coil 22. This structure uses a symmetrical welding and fixing method to make the overall strength of the fixed ring 25 and the yoke 1 high, and make the reliability of the sound generating device 100 high.

[0055] The elastic member 231 is attached to the side of the fixed ring 25 away from the diaphragm 21, and the side of the elastic member 231 away from the yoke 1 is connected to the voice coil 22. The side of the auxiliary diaphragm 232 close to the yoke 1 is attached to the side of the fixed ring 25 away from the diaphragm 21, and the side of the auxiliary diaphragm 232 away from the yoke 1 is connected to the voice coil 22. This structure makes the side of the elastic member away from the yoke and the side of the auxiliary diaphragm away from the yoke spaced apart. That is, the side of the elastic member 231 close to the yoke 1 and the side of the auxiliary diaphragm 232 close to the yoke 1 are respectively attached to opposite sides of the fixed ring 25, and the side of the elastic member 231 away from the yoke 1 and the side of the auxiliary diaphragm 232 away from the yoke 1 are spaced apart and connected to the voice coil 22. That is, the fixed ring 25 is clamped between the outside of the elastic member 231 and the outside of the auxiliary diaphragm 232, and the skeleton 24 away from the magnetic circuit system 3 is clamped between the inside of the elastic member 231 and the inside of the auxiliary diaphragm 232.

[0056] Specifically, one side of the elastic member 231 is fixed to the fixed ring body 251 near the diaphragm 21, and the other side of the elastic member 231 is fixed to the skeleton 24 and spaced from the auxiliary diaphragm 232. The auxiliary diaphragm first fixed part 2322 is fixed to the end of the skeleton 24 away from the diaphragm 21, and the auxiliary diaphragm first extension part 2323 is fixed to the side of the skeleton 24 near the yoke 1. The auxiliary diaphragm second fixed part 2324 is fixed to the side of the fixed ring fixed part 252 away from the diaphragm 21, the inner side of the auxiliary diaphragm second extension part 2325 is fixed to the outer side of the fixed ring fixed part 252, and the side of the auxiliary diaphragm second extension part 2325 near the diaphragm 21 is fixed to the side of the fixed ring body 251 away from the diaphragm 21. The fold ring support part 2133 is supported and fixed to the side of the elastic member 231 away from the fixed ring 25. The fixed ring 25 fixes the elastic member 231 and the auxiliary diaphragm 232 to form an integral structure, which on the one hand facilitates the elastic support assembly 23 of the sound generating device 100 to slow down the lateral swing of the voice coil 22, thereby enhancing the stability of the vibration system 2 of the sound generating device 100 when falling; and at the same time, the elastic member 231 acts as an electrical signal for the lead wire of the voice coil 22, avoiding the introduction of electrical signal to the voice coil 22 through the lead wire structure, which slows down the lateral swing of the voice coil 22, which is separated from the auxiliary diaphragm 232 due to the spaced arrangement, i.e. avoids the risk of disconnection, thereby improving the reliability of the sound generating device 100, on the other hand, the elastic member 231 and the auxiliary diaphragm 232 are not in direct contact, and when the sound generating device 100 is working, the heat generated by the current passing through the elastic member 231 will not be directly conducted to the auxiliary diaphragm 232, so that the material of the auxiliary diaphragm 232 is not deformed by heat, thereby maintaining the vibration consistency of the auxiliary diaphragm 232, thereby improving the reliability of the sound generating device 100.

[0057] One end of the skeleton 24 extends into the magnetic gap 30 and is fixedly connected with the voice coil 22, and the other end of the skeleton 24 extends to the elastic support assembly 23 and is fixedly connected with the elastic support assembly 23. Specifically, the skeleton 24 includes a skeleton body 241 in the form of a ring, a skeleton first fixed part 242 bent and extended from the inner circumferential side of the skeleton body 241 to the voice coil 22, and a skeleton second fixed part 243 bent and extended from the outer circumferential side of the skeleton body 241 to the elastic support assembly 23,

[0058] The skeleton body 241 is fixed to the folding ring body 2131. Specifically, the skeleton body 241 is fixed to the folding ring body 2131 near one side of the magnetic circuit system 3. The skeleton first fixing part 242 is fixedly connected with the voice coil 22.

[0059] The auxiliary diaphragm first fixing part 2322 is fixed to the skeleton second fixing part 243, and the auxiliary diaphragm first extension part 2323 is fixed to the skeleton second fixing part 243 near one side of the yoke 1.

[0060] In this embodiment, the skeleton second fixing part 243 is provided with a skeleton hole 240 penetrating therethrough, and the second fixing arm 2312 penetrates through the skeleton hole 240 and is fixed to the skeleton second fixing part 243. This structure allows the elastic member 231 to adjust the height of the fixed skeleton 24, so that the elastic member 231 and the auxiliary diaphragm 232 maintain a distance, thereby improving the reliability of the sound generating device 100.

[0061] In the direction of vibration of the diaphragm 21, one end of the skeleton 24 is fixed to the diaphragm 21, and the other end of the skeleton 24 is fixed to the elastic support assembly 23.

[0062] The magnetic circuit system 3 includes a magnetic yoke 31 fixed to the bottom wall 11 of the yoke, a main magnetic steel 32 fixed to the magnetic yoke 31, and a vice magnetic steel 33 surrounding the main magnetic steel 32 and forming a magnetic gap 30 therebetween.

[0063] Compared with the related art, in the sound generating device of the present application, the yoke is made of metal material, and the fixing ring is a metal ring, which is fixed to the side wall of the yoke by welding, so as to fix the elastic support assembly to the yoke through the fixing ring. This structure is simple in structure, and the elastic support assembly and the fixing ring can be easily fixed to the yoke. No additional separate structure support features need to be made on the fixing ring or the yoke to increase the parts or process procedures, so as to simplify the assembly process of the sound generating device, and make the elastic support assembly, the fixing ring and the yoke of the sound generating device form a solid overall structure, thereby enhancing the stability of the vibration system when the sound generating device falls, improving the overall strength of the sound generating device, and thus improving the reliability of the sound generating device.

[0064] The above only describes the embodiments of the present application, and it should be noted that those skilled in the art can make improvements without departing from the inventive concept, and these improvements are within the protection scope of the present application.

Claims

1. A sound-generating device, comprising a frame, a vibration system fixed to the frame, and a magnetic circuit system with a magnetic gap for driving the vibration system to vibrate and generate sound, the vibration system comprising a diaphragm fixed to the frame, a voice coil inserted into the magnetic gap and driving the diaphragm to vibrate and generate sound, and an elastic support assembly opposite to and spaced apart from the diaphragm and connected to the voice coil, the elastic support assembly surrounding the outside of the magnetic circuit system and spaced apart from the magnetic circuit system; characterized in that, The basin frame includes a basin frame bottom wall and a basin frame side wall that extends from the periphery of the basin frame bottom wall, and the outer periphery of the diaphragm is fixed to the basin frame side wall. The vibration system further includes a ring-shaped fixing ring for fixing the elastic support assembly to the frame, the fixing ring being arranged around the magnetic circuit system; The basin frame is made of metal, and the fixing ring is a metal ring, which is fixed to the side wall of the basin frame by welding. The side wall of the basin frame includes a first side wall of the basin frame connected to the bottom wall of the basin frame and an annular extension wall of the basin frame stacked on the first side wall of the basin frame. The outer periphery of the diaphragm is fixed to the inner periphery of the extension wall of the basin frame, and the fixing ring is fixed to the extension wall of the basin frame by welding. The voice coil has a rectangular structure, and the elastic support assembly includes two components. The two elastic support assemblies are spaced apart on opposite sides of the voice coil, and the fixing ring is welded to the frame extension wall between the two elastic support assemblies. The elastic support assembly includes an auxiliary diaphragm, the side of the auxiliary diaphragm near the frame is attached to the side of the fixing ring away from the diaphragm, and the side of the auxiliary diaphragm away from the frame is connected to the voice coil.

2. The sound-generating device according to claim 1, characterized in that, The diaphragm includes a diaphragm fixing part fixed to the magnetic circuit system, a dome surrounding the diaphragm fixing part, and a folded ring surrounding the dome. The inner circumferential side of the dome is fixed to the side of the diaphragm fixing part near the folded ring, and the outer circumferential side of the dome is fixed to the side of the folded ring near the diaphragm fixing part. The folded ring includes a folded ring body fixed to the outer circumferential side of the dome, a folded ring fixing part extending from the outer circumferential side of the folded ring body toward the inner circumferential side of the frame extension wall, and a folded ring support part extending from the folded ring fixing part along the inner circumferential side of the frame extension wall toward the elastic support assembly. Both the folded ring fixing part and the folded ring support part are fixed to the inner circumferential side of the frame extension wall.

3. The sound-generating device according to claim 1, characterized in that, The two elastic support components are located on opposite sides of the short axis of the voice coil, and the fixing ring is welded to the frame extension wall on opposite sides of the long axis of the voice coil.

4. The sound-generating device according to claim 1, characterized in that, The elastic support assembly also includes an elastic element that is opposite to and spaced apart from the diaphragm. The auxiliary diaphragm is disposed on the side of the elastic element away from the diaphragm. The side of the elastic element close to the frame is attached to the side of the fixing ring away from the diaphragm. The side of the elastic element away from the frame is connected to the voice coil. The side of the elastic element away from the frame and the side of the auxiliary diaphragm away from the frame are spaced apart.

5. The sound-generating device according to claim 2, characterized in that, The folding ring fixing part has a rectangular structure with rounded corners. The folding ring fixing part includes four straight sides and four rounded corners that connect two adjacent straight sides respectively. The folding ring support part is located at the rounded corner position and is glued and fixed to the extension wall of the basin frame.

6. The sound-generating device according to claim 4, characterized in that, The vibration system also includes a frame fixed to the diaphragm, one end of the frame extending into the magnetic gap and fixedly connected to the voice coil, and the other end of the frame extending toward the elastic support assembly and fixedly connected to the elastic support assembly.

7. The sound-generating device according to claim 6, characterized in that, The fixing ring includes a ring-shaped fixing ring body and a fixing ring fixing part that bends and extends from the inner circumference of the fixing ring body away from the diaphragm. The fixing ring body is fixed to the frame extension wall by welding, and the fixing ring fixing part is fixed to the auxiliary diaphragm. The auxiliary diaphragm includes an auxiliary diaphragm ring, a first fixing portion of the auxiliary diaphragm that bends and extends from the inner side of the auxiliary diaphragm ring toward the direction close to the magnetic circuit system, a first extension portion of the auxiliary diaphragm that extends from the first fixing portion of the auxiliary diaphragm toward the direction close to the diaphragm, a second fixing portion of the auxiliary diaphragm that bends and extends from the outer side of the auxiliary diaphragm ring toward the direction close to the frame, and a second extension portion of the auxiliary diaphragm that extends from the second fixing portion of the auxiliary diaphragm toward the direction close to the diaphragm. The first fixing part of the auxiliary diaphragm is fixed to the end of the frame away from the diaphragm, and the first extension part of the auxiliary diaphragm is attached to and fixed to the side of the frame close to the basin frame. The second fixing part of the auxiliary diaphragm is fixed to the side of the fixing ring fixing part away from the diaphragm, the inner side of the second extension of the auxiliary diaphragm is attached to and fixed to the outer side of the fixing ring fixing part, and the side of the second extension of the auxiliary diaphragm close to the diaphragm is abutted and fixed to the side of the fixing ring body away from the diaphragm. The elastic element includes a first fixed arm fixed to the fixed ring body near the diaphragm, a second fixed arm fixed to the frame, and a spring arm connecting the first fixed arm and the second fixed arm, wherein the second fixed arm is spaced apart from the auxiliary diaphragm.

8. The sound-generating device according to claim 7, characterized in that, The skeleton includes a ring-shaped skeleton body, a first skeleton fixing part that bends and extends from the inner periphery of the skeleton body toward the voice coil, and a second skeleton fixing part that bends and extends from the outer periphery of the skeleton body toward the elastic support assembly. The skeleton body is fixed to the folding ring body, and the first fixing part of the skeleton is fixedly connected to the voice coil; The first fixing part of the auxiliary diaphragm is fixed to the second fixing part of the frame, and the first extension part of the auxiliary diaphragm is fixed to the side of the second fixing part of the frame near the basin; the second fixing part of the frame is provided with a frame hole through it, and the second fixing arm passes through the frame hole and is fixed to the second fixing part of the frame.

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