Sound production device

Abstract

This invention provides a sound-generating device, comprising: a frame; a vibration system including a diaphragm and a voice coil; and a magnetic circuit system including a yoke, a first magnet portion and a second magnet portion stacked and fixed to the yoke; the sound-generating device further includes an elastic conductive element located inside the voice coil and extending through the first magnet portion along the vibration direction of the diaphragm; the elastic conductive element includes a first connecting portion, a second connecting portion, and an elastic portion elastically connecting the first connecting portion and the second connecting portion; the first connecting portion and the second connecting portion are respectively disposed on opposite sides of the first magnet portion along the vibration direction, the first connecting portion is fixed to the side of the first magnet portion away from the diaphragm, and the second connecting portion is electrically connected to the voice coil; the elastic portion has a U-shaped structure, extending through the first magnet portion and spaced apart from it. Compared with related technologies, this invention has a long service life, saves installation space, and has excellent acoustic performance.

Description

[Technical Field]

[0001] This utility model relates to the field of electroacoustic conversion technology, and in particular to a sound-generating device. [Background Technology]

[0002] With the development of electronic technology, portable consumer electronics products are becoming increasingly popular, such as mobile phones, handheld game consoles, navigation devices, and handheld multimedia entertainment devices. These electronic products generally use sound-generating devices for system feedback, such as call alerts, message alerts, and navigation prompts on mobile phones, and vibration feedback on game consoles. The sound-generating device used in mobile phones has become one of the most important components.

[0003] The sound-generating device of the related technology includes a basket frame, a vibration system fixed to the basket frame, and a magnetic circuit system for driving the vibration system to vibrate. The vibration system includes a diaphragm fixed to the basket frame and a voice coil that drives the diaphragm to vibrate and generate sound. The sound-generating device also includes an elastic connection structure, one end of which is fixed to the basket frame, and the other end extends to one side of the voice coil and is electrically connected to the voice coil.

[0004] However, the lever arm of the elastic connection structure of the sound-generating device in the related technology is a planar structure. When vibrating, the connection is maintained by shear deformation of the excess linear lever arm. The planar structure deformable lever arm will not only have internal stress, but also shear stress of deformation, resulting in poor vibration performance.

[0005] Therefore, it is necessary to provide a new sound-generating device to solve the above-mentioned technical problems. [Utility Model Content]

[0006] The purpose of this invention is to provide a sound-generating device that has a long service life, saves installation space, and has excellent acoustic performance.

[0007] To achieve the above objectives, this utility model provides a sound-generating device, the sound-generating device comprising:

[0008] Sink stand;

[0009] A vibration system, comprising a diaphragm fixed to the frame and a voice coil for driving the diaphragm to vibrate and produce sound; and,

[0010] A magnetic circuit system, comprising a magnetic yoke fixed to the side of the frame away from the vibration system, a first magnet portion stacked and fixed to the side of the magnetic yoke near the diaphragm, and a second magnet portion stacked and fixed to the side of the magnetic yoke near the diaphragm and spaced apart from the first magnet portion to form a magnetic gap; the voice coil is inserted into the magnetic gap;

[0011] The sound-generating device further includes an elastic conductive element, which is located inside the voice coil and extends through the first magnet portion along the vibration direction of the diaphragm.

[0012] The elastic conductive element includes a first connecting portion, a second connecting portion, and an elastic portion that elastically connects the first connecting portion and the second connecting portion; the first connecting portion and the second connecting portion are respectively disposed on opposite sides of the first magnet portion along the vibration direction, the first connecting portion is fixed to the side of the first magnet portion away from the diaphragm, and the second connecting portion is fixed to the side of the diaphragm close to the first magnet portion and electrically connected to the voice coil; the elastic portion has a U-shaped structure, and the elastic portion passes through the first magnet portion and is spaced apart from the first magnet portion.

[0013] Preferably, the sound-generating device further includes a through hole formed in the first magnet portion, and the elastic portion is disposed within the through hole.

[0014] Preferably, the elastic conductive element comprises two, and the two elastic portions of the two elastic conductive elements are respectively disposed in the through hole, and the opening directions of the two elastic portions are arranged in opposite directions along the long axis of the first magnet portion.

[0015] Preferably, the through holes include a first through hole and a second through hole that penetrate the first magnet portion and are spaced apart along the long axis of the first magnet portion;

[0016] The elastic conductive element includes two, and the two elastic portions of the two elastic conductive elements are respectively disposed in the first through hole and the second through hole, and the opening directions of the two elastic portions are arranged in opposite directions along the long axis of the first magnet portion.

[0017] Preferably, the voice coil includes a pair of long axis sides and a pair of short axis sides arranged opposite to each other, at least one of the long axis sides is recessed towards the other long axis side to form a recessed portion; the first magnet portion and the second magnet portion are spaced apart to form a magnetic gap that matches the shape of the pair of long axis sides; the first through hole and the second through hole are respectively disposed on opposite sides of the recessed portion along the long axis direction of the first magnet portion.

[0018] Preferably, the first magnet portion includes a main magnet stacked and fixed on the side of the yoke near the diaphragm and a main pole core stacked and fixed on the side of the main magnet near the diaphragm; the elastic conductive element is disposed through the main pole core and the main magnet in sequence.

[0019] Preferably, the second magnet portion includes a secondary magnet stacked and fixed to the side of the magnetic yoke near the diaphragm, and a secondary pole core stacked and fixed to the side of the secondary magnet near the diaphragm.

[0020] Preferably, the auxiliary magnets include four, and the four auxiliary magnets are spaced apart to form a ring structure. The four auxiliary magnets are respectively surrounded on the outer periphery of the main magnet and spaced apart to form the magnetic gap.

[0021] Preferably, the auxiliary magnet is ring-shaped and arranged around the main magnet at intervals.

[0022] Preferably, the magnetic yoke includes a magnetic yoke body fixed to the basin frame and a clearance hole formed through the magnetic yoke body, the clearance hole communicating with the through hole;

[0023] The sound-generating device also includes a sealing cover, which is disposed in the clearance hole along with the first connecting part. The sealing cover is fixedly attached to the through hole.

[0024] Preferably, the elastic conductive element includes a spring sheet electrically connected to the voice coil and an adapter assembly electrically connected to the spring sheet and fixed to the first magnet portion on the side away from the diaphragm along the vibration direction. The adapter assembly includes a conductive connector electrically connected to the spring sheet and a molding compound injection-molded into the conductive connector. The spring sheet includes a second connecting portion, the elastic portion, and a connecting end that electrically connects the elastic portion to the conductive connector. The connecting end and the adapter assembly form the first connecting portion.

[0025] Preferably, the molding compound is fixed inside the clearance hole, and the side of the molding compound near the sealing cap abuts against the sealing cap.

[0026] Preferably, the magnetic yoke further includes a protrusion formed by the sidewall of the clearance hole extending toward each other, and the molding compound is integrally injection molded with the protrusion.

[0027] Preferably, the diaphragm includes an annular folded ring, a fixing portion extending from the outer periphery of the folded ring toward the direction close to the frame, a vibrating portion extending from the inner periphery of the folded ring toward the direction away from the frame, and a dome fixed to the vibrating portion on the side close to the magnetic circuit system; the voice coil is fixed to the dome on the side close to the magnetic circuit system; and the second connecting portion is fixed to the dome on the side close to the magnetic circuit system.

[0028] Compared with related technologies, the sound-generating device of this utility model has an elastic conductive element located inside the voice coil and extending through the first magnet portion along the vibration direction of the diaphragm. The elastic conductive element includes a first connecting portion, a second connecting portion, and an elastic portion that elastically connects the first connecting portion and the second connecting portion. The first connecting portion and the second connecting portion are respectively disposed on opposite sides of the first magnet portion along the vibration direction. The first connecting portion is fixed to the side of the first magnet portion away from the diaphragm, and the second connecting portion is fixed to the side of the diaphragm close to the first magnet portion and electrically connected to the voice coil. The elastic portion has a U-shaped structure, extending through the first magnet portion and spaced apart from it. This significantly reduces the stress received by the elastic portion during vibration compared to a planar structure, and greatly improves the vibration life of the elastic conductive element. At the same time, the overall planar space occupied is greatly reduced, which can be used to increase the volume of other components and improve the acoustic performance of the product. [Attached Image Description]

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0030] Figure 1 This is a schematic diagram of the structure of the sound-generating device provided in Embodiment 1 of this utility model;

[0031] Figure 2 This is an exploded structural diagram of the sound-generating device provided in Embodiment 1 of this utility model;

[0032] Figure 3 for Figure 1 AA-line sectional view;

[0033] Figure 4 This is a schematic diagram of the structure of the sound-generating device provided in Embodiment 2 of this utility model;

[0034] Figure 5 This is an exploded structural diagram of the sound-generating device provided in Embodiment 2 of this utility model;

[0035] Figure 6 for Figure 4 BB line section view;

[0036] Figure 7 This is a schematic diagram of the structure of the sound-generating device provided in Embodiment 3 of this utility model;

[0037] Figure 8 This is an exploded structural diagram of the sound-generating device provided in Embodiment 3 of this utility model;

[0038] Figure 9 This is a schematic diagram of the structure of the sound-generating device provided in Embodiment 4 of this utility model;

[0039] Figure 10 for Figure 9 CC-line section view;

[0040] Figure 11 This is a partially exploded structural diagram of the sound-generating device provided in Embodiment 4 of this utility model.

[0041] In the diagram, 100 is the sound-generating device, 1 is the frame, 2 is the vibration system, 21 is the diaphragm, 211 is the fixing part, 212 is the surround, 213 is the vibrating part, 214 is the dome, 22 is the voice coil, 221 is the long axis side, 222 is the recess, 223 is the short axis side, 3 is the magnetic circuit system, 31 is the first magnet part, 311 is the main magnet, 312 is the main pole core, 32 is the second magnet part, and 321 is the auxiliary magnet. 322. Magnet, secondary pole core, 33. Magnetic yoke, 331. Magnetic yoke body, 332. Clearance hole, 333. Protrusion, 34. Magnetic gap, 4. Elastic conductive element, 41. First connecting part, 42. Second connecting part, 43. Elastic part, 5. Through hole, 51. First through hole, 52. Second through hole, 6. Sealing cap, 7. Adapter assembly, 71. Plastic sealant, 72. Conductive connector, 8. Spring.

Detailed Implementation Methods

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0043] Example 1

[0044] Please see Figures 1-3 As shown, this utility model embodiment provides a sound generating device 100, which includes: a frame 1, a vibration system 2, and a magnetic circuit system 3.

[0045] The frame 1 is used to support and fix the vibration system 2 and the magnetic circuit system 3, providing support performance.

[0046] The vibration system 2 includes a diaphragm 21 fixed to the frame 1 and a voice coil 22 for driving the diaphragm 21 to vibrate and produce sound.

[0047] The magnetic circuit system 3 includes a magnetic yoke 33 fixed to the side of the frame 1 away from the vibration system 2, a first magnet portion 31 stacked and fixed to the side of the magnetic yoke 33 near the diaphragm 21, and a second magnet portion 32 stacked and fixed to the side of the magnetic yoke 33 near the diaphragm 21 and spaced apart from the first magnet portion 31 to form a magnetic gap 34; the voice coil 22 is inserted into the magnetic gap 34. The magnetic yoke 33 is used to stack and fix the first magnet portion 31 and the second magnet portion 32. When the voice coil 22 is energized through the magnetic gap 34 formed by the first magnet portion 31 and the second magnet portion 32, it drives the diaphragm 21 to vibrate and produce sound, thereby improving the acoustic performance of the sound-producing device 100.

[0048] The sound-generating device 100 further includes an elastic conductive element 4, which is located inside the voice coil 22 and extends through the first magnet portion 31 along the vibration direction of the diaphragm 21. The elastic conductive element 4 includes a first connecting portion 41, a second connecting portion 42, and an elastic portion 43 that elastically connects the first connecting portion 41 and the second connecting portion 42. The first connecting portion 41 and the second connecting portion 42 are respectively disposed on opposite sides of the first magnet portion 31 along the vibration direction. The first connecting portion 41 is fixed to the side of the first magnet portion 31 away from the diaphragm 21, and the second connecting portion 42 is fixed to the side of the diaphragm 21 near the first magnet portion 31 and electrically connected to the voice coil 22. The elastic portion 43 has a U-shaped structure, extends through the first magnet portion 31, and is spaced apart from it. This creates a three-dimensional connection structure where the first connecting portion 41, the second connecting portion 42, and the elastic portion 43 maintain the connection during vibration. The elastic deformation of the three-dimensional structure only involves internal deformation stress, significantly improving the vibration lifespan. This causes the first connecting part 41 and the second connecting part 42 of the sound-generating device 100 to open and close vertically during vibration. The stress received by the elastic part 43 is greatly reduced compared to the planar structure, and the vibration life of the elastic conductive part 4 is greatly improved. At the same time, the overall planar space occupied is greatly reduced, which can be used to increase the volume of other components and improve the acoustic performance of the product.

[0049] The elastic conductive element 4 with a three-dimensional structure is used in conjunction with a single voice coil, and the elastic conductive element 4 is disposed inside the voice coil 22. Various materials, three-dimensional shapes of various lever arms, and corresponding shapes and magnetic circuit structures of various voice coils 22 are all included in the design of the elastic conductive element 4.

[0050] In this embodiment, the first magnet portion 31 and the second magnet portion 32 can be made of permanent magnets or magnetically conductive materials. When an audio current passes through the voice coil 22, the voice coil 22 is subjected to an Ampere force in the magnetic field generated by the first magnet portion 31 and the second magnet portion 32, thereby generating vibration. This vibration is transmitted to the external environment through the diaphragm 21 connected to the voice coil 22, thereby generating sound.

[0051] In this embodiment, the elastic part 43 also includes V-shaped and C-shaped, but is not limited to these. As long as it is arc-shaped or similar to an arc shape, it can elastically open and close up and down along the vibration direction. This is the U-shaped structure described in this embodiment, which connects the first connecting part 41 and the second connecting part 42 that are not on the same plane and provides elastic support force.

[0052] In this embodiment, the sound-generating device 100 further includes a through hole 5 formed through the first magnet portion 31, and the elastic portion 43 is disposed within the through hole 5. The through hole 5 facilitates the passage of the elastic conductive element 4 through the first magnet portion 31. The first connecting portion 41 of the elastic conductive element 4 is fixed to the side of the first magnet portion 31 away from the diaphragm 21, and the second connecting portion 42 is fixed to the side of the vibration portion closer to the first magnet portion 31. When the voice coil 22 drives the diaphragm 21 to vibrate, the stress received by the elastic portion 43 is significantly reduced compared to the planar structure, and the vibration life is significantly improved.

[0053] In this embodiment, the elastic conductive element 4 includes two elements, and the two elastic portions 43 of the two elastic conductive elements 4 are respectively disposed in the through hole 5, and the opening directions of the two elastic portions 43 are arranged in opposite directions along the long axis of the first magnet portion 31. The two elastic conductive elements 4 can further enhance the elastic support capacity of the diaphragm 21, thereby increasing the service life of the elastic conductive elements 4.

[0054] In this embodiment, the first magnet part 31 includes a main magnet 311 stacked and fixed to the side of the magnetic yoke 33 near the diaphragm 21, and a main pole core 312 stacked and fixed to the side of the main magnet 311 near the diaphragm 21; the elastic conductive member 4 is disposed sequentially through the main pole core 312 and the main magnet 311. The main pole core 312 conducts the magnetic field of the main magnet 311, thereby facilitating the enhancement of the overall magnetic field strength of the main magnet 311.

[0055] In this embodiment, the second magnet part 32 includes a secondary magnet 321 stacked and fixed to the side of the magnetic yoke 33 near the diaphragm 21, and a secondary pole core 322 stacked and fixed to the side of the secondary magnet 321 near the diaphragm 21. This facilitates increasing the magnetic field strength of the secondary magnet 321.

[0056] In this embodiment, four auxiliary magnets 321 are included, and the four auxiliary magnets 321 are spaced apart to form a ring structure. The four auxiliary magnets 321 are respectively surrounded on the outer periphery of the main magnet 311 and spaced apart to form the magnetic gap 34. The four auxiliary magnets 321 surrounding the outer periphery of the main magnet 311 to form the ring-shaped magnetic gap 34 enhances the overall magnetic field of the magnetic circuit system 3, which facilitates the driving of the voice coil 22.

[0057] In this embodiment, the magnetic yoke 33 includes a magnetic yoke body 331 fixed to the frame 1 and a clearance hole 332 formed through the magnetic yoke body 331. The clearance hole 332 communicates with the through hole 5. The sound-generating device 100 also includes a sealing cover 6. The sealing cover 6 and the first connecting part 41 are respectively disposed in the clearance hole 332, and the sealing cover 6 is fixed to the through hole 5. This allows the sealing cover 6 to pass through the clearance hole 332 and be fixed to the through hole 5, thus sealing the through hole 5 and providing overall protection. At the same time, a portion of the clearance hole 332 covers the groove 323, and the first connecting parts 41 are installed on both sides of the groove 323. This allows the clearance hole 332 to facilitate the connection of the first connecting part 41 to an external power source. Electrical signals are conducted to the second connecting part 42 sequentially through the first connecting part 41, the elastic part 43, and the second connecting part 42, facilitating the connection of the second connecting part 42 to the voice coil 22 to provide power.

[0058] In this embodiment, the diaphragm 21 includes an annular folded ring 212, a fixing portion 211 extending from the outer periphery of the folded ring 212 toward the direction close to the frame 1, a vibrating portion 213 extending from the inner periphery of the folded ring 212 toward the direction away from the frame 1, and a dome 214 fixed to the vibrating portion 213 on the side close to the magnetic circuit system 3; the voice coil 22 is fixed to the dome 214 on the side close to the magnetic circuit system 3; and the second connecting portion 42 is fixed to the dome 214 on the side close to the magnetic circuit system 3.

[0059] Example 2

[0060] Please see Figures 4-6 As shown, this embodiment 2 is basically the same in structure as embodiment 1, except that in this embodiment, the through hole 5 includes a first through hole 51 and a second through hole 52 that pass through the first magnet part 31 and are spaced apart along the long axis of the first magnet part 31. The elastic conductive element 4 includes two elements, with two elastic portions 43 respectively disposed in the first through hole 51 and the second through hole 52, and the opening directions of the two elastic portions 43 are opposite to those along the long axis of the first magnet part 31. By increasing the spacing between the two elastic conductive elements 4, the fixing position of the second connecting portion 42 of the elastic conductive element 4 and the diaphragm 21 can be effectively adjusted, further improving the fixing performance of the diaphragm 21. This significantly reduces the stress received by the elastic portion 43 during vibration compared to a planar structure, greatly increasing the vibration life of the elastic conductive element 4; simultaneously, the overall planar space occupied is significantly reduced, which can be used to increase the volume of other components and improve the acoustic performance of the product.

[0061] In this embodiment, the voice coil 22 includes a pair of long axis edges 221 and a pair of short axis edges 223 arranged opposite to each other. At least one of the long axis edges 221 is recessed towards the other long axis edge 221 to form a recessed portion 222. The first magnet portion 31 and the second magnet portion 32 are spaced apart to form a magnetic gap 34 that matches the shape of the pair of long axis edges 221. The first through hole 51 and the second through hole 52 are respectively disposed on opposite sides of the recessed portion 222 along the long axis direction of the first magnet portion 31.

[0062] Example 3

[0063] Please see Figures 7-8 As shown, this embodiment three has a structure that is basically the same as that of embodiment one. The difference is that in this embodiment, the auxiliary magnet 321 is ring-shaped and spaced around the main magnet 311. The auxiliary magnet 321 and the main magnet 311 are spaced apart to form the magnetic gap 34, which has high structural strength and enhances the overall magnetic field of the magnetic circuit system 3, making it easier to drive the voice coil 22.

[0064] Example 4

[0065] Please see Figures 9-11 As shown, this embodiment 4 is basically the same in structure as embodiment 1. The difference is that in this embodiment, the elastic conductive member 4 includes a spring piece 8 electrically connected to the voice coil 22 and a transition assembly 7 electrically connected to the spring piece 8 and fixed to the first magnet part 31 on the side away from the diaphragm 21 along the vibration direction. The transition assembly 7 includes a conductive connector 72 electrically connected to the spring piece 8 and a molding compound 71 injection molded onto the conductive connector 72. The spring piece 8 includes a second connecting part 42, an elastic part 43, and a connecting end that electrically connects the elastic part 43 to the conductive connector 72. The connecting end and the transition assembly 7 form the first connecting part 41.

[0066] In this embodiment, the molding compound 71 is fixed within the clearance hole 332, and the side of the molding compound 71 closest to the sealing cover 6 abuts against the sealing cover 6. By installing the molding compound 71 within the clearance hole 332 and then fixing the conductive connector 72 to the molding compound 71, signal interference is avoided caused by the conductive connector 72 contacting the magnetic yoke 33. The conductive connector 72 is connected to the first connecting portion 41 of the elastic conductive member 4, facilitating the extension of the conductive connector 72 to an external power source for powering the voice coil 22.

[0067] In this embodiment, the magnetic yoke 33 further includes a protrusion 333 extending from the sidewall of the clearance hole 332 toward a closer side, and the molding compound 71 is integrally injection molded with the protrusion 333. This facilitates the filling of the clearance hole 332 by the molding compound 71, resulting in a good overall seal for the sound-generating device 100.

[0068] Compared with related technologies, the sound-generating device of this utility model has an elastic conductive element located inside the voice coil and extending through the first magnet portion along the vibration direction of the diaphragm. The elastic conductive element includes a first connecting portion, a second connecting portion, and an elastic portion that elastically connects the first connecting portion and the second connecting portion. The first connecting portion and the second connecting portion are respectively disposed on opposite sides of the first magnet portion along the vibration direction. The first connecting portion is fixed to the side of the first magnet portion away from the diaphragm, and the second connecting portion is fixed to the side of the diaphragm close to the first magnet portion and electrically connected to the voice coil. The elastic portion has a U-shaped structure, extending through the first magnet portion and spaced apart from it. This significantly reduces the stress received by the elastic portion during vibration compared to a planar structure, and greatly improves the vibration life of the elastic conductive element. At the same time, the overall planar space occupied is greatly reduced, which can be used to increase the volume of other components and improve the acoustic performance of the product.

[0069] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A sound-generating device, the sound-generating device comprising: Sink stand; A vibration system, the vibration system comprising a diaphragm fixed to the frame and a voice coil for driving the diaphragm to vibrate and produce sound; as well as, A magnetic circuit system, comprising a magnetic yoke fixed to the side of the frame away from the vibration system, a first magnet portion stacked and fixed to the side of the magnetic yoke near the diaphragm, and a second magnet portion stacked and fixed to the side of the magnetic yoke near the diaphragm and spaced apart from the first magnet portion to form a magnetic gap; the voice coil is inserted into the magnetic gap; characterized in that... The sound-generating device further includes an elastic conductive element, which is located inside the voice coil and extends through the first magnet portion along the vibration direction of the diaphragm. The elastic conductive element includes a first connecting portion, a second connecting portion, and an elastic portion that elastically connects the first connecting portion and the second connecting portion; the first connecting portion and the second connecting portion are respectively disposed on opposite sides of the first magnet portion along the vibration direction, the first connecting portion is fixed to the side of the first magnet portion away from the diaphragm, and the second connecting portion is fixed to the side of the diaphragm close to the first magnet portion and electrically connected to the voice coil; the elastic portion has a U-shaped structure, and the elastic portion passes through the first magnet portion and is spaced apart from the first magnet portion.

2. The sound-generating device according to claim 1, characterized in that, The sound-generating device further includes a through hole formed in the first magnet portion, and the elastic portion is disposed within the through hole.

3. The sound-generating device according to claim 2, characterized in that, The elastic conductive element includes two, and the two elastic portions of the two elastic conductive elements are respectively disposed in the through hole, and the opening directions of the two elastic portions are arranged in opposite directions along the long axis of the first magnet portion.

4. The sound-generating device according to claim 2, characterized in that, The through holes include a first through hole and a second through hole that penetrate the first magnet portion and are spaced apart along the long axis of the first magnet portion. The elastic conductive element includes two, and the two elastic portions of the two elastic conductive elements are respectively disposed in the first through hole and the second through hole, and the opening directions of the two elastic portions are arranged in opposite directions along the long axis of the first magnet portion.

5. The sound-generating device according to claim 4, characterized in that, The voice coil includes a pair of long axis sides and a pair of short axis sides arranged opposite each other. At least one of the long axis sides is recessed towards the other long axis side to form a recessed portion. The first magnet portion and the second magnet portion are spaced apart to form a magnetic gap that matches the shape of the pair of long axis sides. The first through hole and the second through hole are respectively disposed on opposite sides of the recessed portion along the long axis direction of the first magnet portion.

6. The sound-generating device according to claim 1, characterized in that, The first magnet part includes a main magnet stacked and fixed on the side of the magnetic yoke near the diaphragm and a main pole core stacked and fixed on the side of the main magnet near the diaphragm; the elastic conductive element is disposed through the main pole core and the main magnet in sequence.

7. The sound-generating device according to claim 6, characterized in that, The second magnet part includes a secondary magnet stacked and fixed to the side of the magnetic yoke near the diaphragm, and a secondary pole core stacked and fixed to the side of the secondary magnet near the diaphragm.

8. The sound-generating device according to claim 7, characterized in that, The auxiliary magnets include four, and the four auxiliary magnets are spaced apart to form a ring structure. The four auxiliary magnets are respectively surrounded on the outer periphery of the main magnet and spaced apart to form the magnetic gap.

9. The sound-generating device according to claim 7, characterized in that, The auxiliary magnet is arranged in a ring shape and spaced around the main magnet.

10. The sound-generating device according to claim 2, characterized in that, The magnetic yoke includes a magnetic yoke body fixed to the basin frame and a clearance hole formed through the magnetic yoke body, the clearance hole communicating with the through hole; The sound-generating device also includes a sealing cover, which is disposed in the clearance hole along with the first connecting part, and the sealing cover is fixedly attached to the through hole.

11. The sound-generating device according to claim 10, characterized in that, The elastic conductive element includes a spring sheet electrically connected to the voice coil and an adapter assembly electrically connected to the spring sheet and fixed to the first magnet portion on the side away from the diaphragm along the vibration direction. The adapter assembly includes a conductive connector electrically connected to the spring sheet and a molding compound injection molded onto the conductive connector. The spring sheet includes a second connecting portion, the elastic portion, and a connecting end that electrically connects the elastic portion to the conductive connector. The connecting end and the adapter assembly form the first connecting portion.

12. The sound-generating device according to claim 11, characterized in that, The molding compound is fixed inside the clearance hole, and the side of the molding compound closest to the sealing cap abuts against the sealing cap.

13. The sound-generating device according to claim 11, characterized in that, The magnetic yoke also includes a protrusion formed by the sidewall of the clearance hole extending toward each other, and the molding compound is integrally injection molded with the protrusion.

14. The sound-generating device according to claim 1, characterized in that, The diaphragm includes an annular folded ring, a fixing portion extending from the outer periphery of the folded ring toward the direction close to the frame, a vibrating portion extending from the inner periphery of the folded ring toward the direction away from the frame, and a dome fixed to the vibrating portion on the side close to the magnetic circuit system; the voice coil is fixed to the dome on the side close to the magnetic circuit system; and the second connecting portion is fixed to the dome on the side close to the magnetic circuit system.

Images