Sound production device

Abstract

The utility model provides a kind of sound production device, it includes: basin frame;Vibration system, vibration system includes diaphragm and voice coil;Magnetic circuit system, magnetic circuit system includes yoke, first magnet part, second magnet part, first through-hole and second through-hole;Sound production device further includes elastic conductive part, elastic conductive part is located the inside of voice coil and passes through second through-hole;Elastic conductive part includes first connecting part, second connecting part and the elastic part of U type;Elastic part passes through second through-hole and is spaced apart with first magnet part, and the both ends of elastic part are connected first connecting part and second connecting part respectively.In the utility model, the elastic conductive part of sound production device only has one through-hole that passes through first magnet part and the elastic part of U type, so not only can avoid the through-hole that elastic part passes to open too big, so that magnetic circuit system has enough driving force to drive voice coil, simultaneously can also reduce the assembly difficulty of elastic conductive part.

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 electronic products are becoming increasingly popular, such as mobile phones, handheld game consoles, and smartwatches. These electronic products generally use sound-generating devices for volume feedback.

[0003] The sound-generating device mainly includes a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate. The vibration system includes a diaphragm fixed to the frame and a voice coil that drives the diaphragm to vibrate and generate sound. In order to introduce an electrical signal into the voice coil, the sound-generating device also includes an elastic conductive element.

[0004] However, the lever arm of the elastic conductive component is a planar structure. When it vibrates, it uses the excess linear lever arm to shear deformation to maintain the connection. The deformable lever arm of the planar structure will not only have internal stress, but also shear stress from deformation, which will lead to poor vibration performance of the sound-generating device.

[0005] In order to solve the problems of planar elastic conductive components, related technologies generally design the elastic conductive component as a three-dimensional structure with two elastic parts, so that it passes through the magnetic circuit system and introduces electrical signals through the voice coil at both ends of the elastic conductive component. This type of elastic conductive component with two elastic parts requires large holes to be made in the magnetic circuit system, which will cause the width of the central magnet part of the magnetic circuit system to be excessively reduced, and it will not have enough driving force to drive the voice coil, thus degrading the performance of the sound-generating device. In addition, during assembly, the two elastic parts need to pass through the holes of the magnetic circuit system respectively, which makes the assembly of the sound-generating device more complicated.

[0006] Therefore, it is necessary to provide a new sound-generating device to solve the above-mentioned technical problems. [Utility Model Content]

[0007] The purpose of this invention is to provide a new sound-generating device to solve the problem in related technologies where sound-generating devices use elastic conductive parts with double elastic parts, resulting in an excessive reduction in the width of the central magnet part of the magnetic circuit system, which leads to a deterioration in the performance of the sound-generating device and complicated assembly.

[0008] To achieve the above objectives, this utility model provides a sound-generating device, comprising:

[0009] Sink stand;

[0010] A vibration system, comprising a diaphragm fixed to the frame and a voice coil for driving the diaphragm to vibrate in a first direction to generate sound; and,

[0011] A magnetic circuit system is fixed to the diaphragm and, together with the diaphragm and the vibration system, forms a sound-generating cavity. The magnetic circuit system includes a magnetic yoke, a first magnet portion stacked and fixed to the side of the magnetic yoke near the diaphragm, 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, a first through hole penetrating the magnetic yoke, and a second through hole penetrating the first magnet portion and communicating with the first through hole. The voice coil is inserted into the magnetic gap, and the inner walls of the two opposite sides of the second through hole along a second direction are defined as the first inner wall and the second inner wall, respectively, and the second direction is perpendicular to the first direction.

[0012] The sound-generating device further includes an elastic conductive element, which is located inside the voice coil and passes through the second through hole;

[0013] The elastic conductive element includes a first connecting portion located inside the first through hole and fixed to the side of the first magnet portion away from the diaphragm, a second connecting portion fixed to the side of the diaphragm close to the first magnet portion and electrically connected to the voice coil, and a U-shaped elastic portion; the elastic portion passes through the second through hole and is spaced apart from the first magnet portion, the two ends of the elastic portion are respectively connected to the first connecting portion and the second connecting portion, and the opening of the elastic portion faces the second inner wall;

[0014] The distance between the first inner wall and the second inner wall is equal to the sum of the distance between the bent top of the elastic part and the first inner wall and the distance between the bent top of the elastic part and the second inner wall. The distance between the bent top of the elastic part and the first inner wall is greater than zero, and the distance between the bent top of the elastic part and the first inner wall is less than the distance between the bent top of the elastic part and the second inner wall.

[0015] Preferably, the ratio of the distance from the bent top of the elastic part to the first inner wall to the distance from the bent top of the elastic part to the second inner wall is 1:8-1:15.

[0016] Preferably, the distance from the bent top of the elastic part to the first inner wall is 0.15mm-0.30mm.

[0017] Preferably, both the first connecting portion and the second connecting portion are flat; the first connecting portion has a first positive pad and a first negative pad spaced apart on the side away from the first magnet portion; the second connecting portion has a second positive pad and a second negative pad spaced apart on the side away from the diaphragm, the second positive pad and the second negative pad are fixedly electrically connected to the positive and negative terminals of the voice coil, respectively; the first positive pad and the second positive pad are electrically connected to form a first circuit, the first negative pad and the second negative pad are electrically connected to form a second circuit, and the first circuit and the second circuit are insulated from each other.

[0018] Preferably, the second connecting portion is recessed on the side near the elastic portion to form a groove; the end of the elastic portion near the second connecting portion extends to the bottom wall of the groove to form a fixed shape and is spaced apart from the side wall of the groove.

[0019] Preferably, the first magnet part 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 main pole core is provided with a clearance hole that passes through it and communicates with the second through hole, and the second connecting part is completely placed in the clearance hole along the orthographic projection of the first direction; the second through hole is provided to pass through the main magnet and the main pole core in sequence, and the first connecting part is fixed on the side of the main magnet away from the diaphragm.

[0020] Preferably, both the basin frame and the magnetic circuit system are rectangular rings; the four corners of the second magnet are recessed inward to form notches, so that the four corners of the basin frame are spaced apart from the second magnet to form leakage holes, and the leakage holes connect the sound-generating cavity to the outside; the sound-generating device also includes a breathable isolation component that completely covers the leakage holes.

[0021] Preferably, the breathable insulating component includes a bottom wall fixed to the magnetic yoke and four side walls of the basin frame that are bent and extended from the four corners of the bottom wall toward the basin frame; each side wall is also fixed to adjacent sides of the second magnet portion to completely cover the corresponding leakage hole.

[0022] 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; the notch includes a first notch formed by indentation at the four corners of the secondary magnet and a second notch formed by indentation at the four corners of the secondary pole core.

[0023] Preferably, the vibration system further includes a frame; the frame includes a first fixing part fixed to the diaphragm, a second fixing part fixed to the voice coil, and a bent part extending from the first fixing part toward the second fixing part and forming a fixed connection with the second fixing part.

[0024] Compared with related technologies, the elastic conductive element of the sound-generating device in this utility model includes a U-shaped elastic part that passes through a through hole in the first magnet part. The through hole includes a first inner wall and a second inner wall that are disposed opposite to each other. The opening of the elastic part faces the second inner wall, and the distance from the bent top of the elastic part to the first inner wall is greater than zero and less than the distance from the bent top of the elastic part to the second inner wall. This allows only a single elastic part to pass through the through hole and to work normally. The elastic conductive element can only have one elastic part passing through the through hole, which avoids the through hole for the elastic part to be too large, so that the first magnet part has sufficient volume, thereby giving the magnetic circuit system sufficient driving force to drive the voice coil, ensuring better performance of the sound-generating device. Furthermore, it is easier to adjust the position when a single elastic part passes through the hole, which can significantly reduce the assembly difficulty of the elastic conductive element. [Attached Image Description]

[0025] 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:

[0026] Figure 1 This is a schematic diagram of the overall structure of the sound-generating device provided in an embodiment of the present utility model;

[0027] Figure 2 A frontal exploded view of the sound-generating device provided in an embodiment of this utility model;

[0028] Figure 3 A reverse exploded view of the sound-generating device provided in an embodiment of this utility model.

[0029] Figure 4 for Figure 1 AA-line sectional view;

[0030] Figure 5 for Figure 4 A diagram showing the spacing relationship between the first inner wall, the second inner wall, and the bent top of the elastic part;

[0031] Figure 6 This is a schematic diagram of the structure of the elastic conductive element in the sound-generating device provided in an embodiment of the present invention.

[0032] In the diagram, 100 is the sound-generating device; 1 is the frame; 2 is the vibration system; 21 is the diaphragm; 22 is the voice coil; 23 is the frame; 231 is the first fixing part; 232 is the second fixing part; 233 is the bending part; 3 is the magnetic circuit system; 31 is the yoke; 311 is the first through hole; 32 is the first magnet part; 321 is the main magnet; 3211 is the second through hole; 32111 is the first inner wall; 32112 is the second inner wall; 322 is the main pole core; 3221 is the clearance hole; 3222 is the clearance groove; and 33 is the second magnet part. 331. Secondary magnet; 332. Secondary pole core; 333. Notch; 3331. First notch; 3332. Second notch; 4. Elastic conductive element; 41. First connecting part; 411. First positive electrode pad; 412. First negative electrode pad; 413. Lead wire; 42. Second connecting part; 421. Second positive electrode pad; 422. Second negative electrode pad; 423. Groove; 43. Elastic part; 5. Breathable insulating element; 51. Bottom wall; 52. Side wall; 10. Sound-generating cavity; 20. Magnetic gap; 30. Leakage hole.

Detailed Implementation Methods

[0033] 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.

[0034] This utility model embodiment provides a sound-generating device 100, combined with... Figures 1 to 6 As shown, the sound-generating device 100 includes a frame 1, a vibration system 2, and a magnetic circuit system 3.

[0035] The sound-generating device 100 is rectangular in shape, and the frame 1, voice coil 22, magnetic yoke 31, first magnet part 32 and second magnet part 33 are all rectangular rings, and the diaphragm 21 is rectangular.

[0036] 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 in a first direction.

[0037] In this embodiment, the vibration system 2 further includes a frame 23; the frame 23 includes a first fixing part 231 fixed to the diaphragm 21, a second fixing part 232 fixed to the voice coil 22, and a bent part 233 extending from the first fixing part 231 toward the second fixing part 232 and forming a fixed connection with the second fixing part 232.

[0038] The magnetic circuit system 3 is fixed to the frame 1 and together with the frame 1 and the vibration system 2, forms the sound-generating cavity 10. The magnetic circuit system 3 includes a magnetic yoke 31, a first magnet part 32 stacked and fixed on the side of the magnetic yoke 31 near the diaphragm 21, a second magnet part 33 stacked and fixed on the side of the magnetic yoke 31 near the diaphragm 21 and spaced apart from the first magnet part 32 to form a magnetic gap 20, a first through hole 311 penetrating the magnetic yoke 31, and a second through hole 3211 penetrating the first magnet part 32 and communicating with the first through hole 311. The voice coil 22 is inserted and suspended in the magnetic gap 20. The inner walls of the two opposite sides of the second through hole 3211 along the second direction are defined as the first inner wall 32111 and the second inner wall 32112, respectively. The second direction is perpendicular to the first direction. Figure 1 , Figure 2 as well as Figure 4 As shown, the first direction is the X-axis, and the second direction is the Y-axis.

[0039] In this embodiment, the side of the second magnet part 33 away from the magnetic yoke 31 is fixed to the basin frame 1.

[0040] The first magnet part 32 includes a main magnet 321 stacked and fixed on the side of the yoke 31 near the diaphragm 21 and a main pole core 322 stacked and fixed on the side of the main magnet 321 near the diaphragm 21; a second through hole 3211 is provided to pass through the main magnet 321 and the main pole core 322 in sequence.

[0041] The second magnet part 33 includes a secondary magnet 331 stacked and fixed on the side of the yoke 31 near the diaphragm 21, and a secondary pole core 332 stacked and fixed on the side of the secondary magnet 331 near the diaphragm 21.

[0042] In this embodiment, the auxiliary magnet 331 is a whole rectangular ring. Of course, depending on the actual needs, the auxiliary magnet 331 can also be formed by multiple intermittent rectangular rings surrounding the main magnet 321.

[0043] The sound-generating device 100 also includes an elastic conductive element 4, which is located inside the voice coil 22 and passes through the second through hole 3211 along the first direction.

[0044] The elastic conductive element 4 includes a first connecting portion 41 located within the first through hole 311 and fixed to the side of the first magnet portion 32 away from the diaphragm 21; a second connecting portion 42 fixed to the side of the diaphragm 21 near the first magnet portion 32 and electrically connected to the voice coil 22; and a U-shaped elastic portion 43. The elastic portion 43 passes through the second through hole 3211 and is spaced apart from the first magnet portion 32. The two ends of the elastic portion 43 are respectively connected to the first connecting portion 41 and the second connecting portion 42, and the opening of the elastic portion 43 faces the second inner wall 32112. The first connecting portion 41 protrudes outward through the first through hole 311 to introduce an electrical signal to the voice coil 22.

[0045] Both the first connecting part 41 and the second connecting part 42 can be fixed to the first magnet part 32 and the diaphragm 21 respectively by gluing. The first connecting part 41 is fixed to the side of the main magnet 321 away from the diaphragm 21.

[0046] Of course, the elastic part 43 also includes V-shaped, C-shaped, etc., and is not limited to these. It can be any shape that is arc-shaped or similar to an arc. Its main function is to be able to elastically open and close up and down along the first direction, which is the U-shaped structure in this embodiment. It connects the first connecting part 41 and the second connecting part 42 that are not on the same plane and provides elastic support force.

[0047] The distance between the first inner wall 32111 and the second inner wall 32112 is equal to the sum of the distance between the bent top of the elastic part 43 and the first inner wall 32111 and the distance between the bent top of the elastic part 43 and the second inner wall 32112. The distance between the bent top of the elastic part 43 and the first inner wall 32111 is greater than zero, and the distance between the bent top of the elastic part 43 and the first inner wall 32111 is less than the distance between the bent top of the elastic part 43 and the second inner wall 32112.

[0048] The bent top of the elastic part 43 refers to the position on the elastic part 43 closest to the first inner wall 32111, combined with Figure 4 and Figure 5 As shown.

[0049] In this embodiment, the ratio of the distance between the bent top of the elastic part 43 and the first inner wall 32111 to the distance between the bent top of the elastic part 43 and the second inner wall 32112 is 1:8-1:15. Of course, this ratio range can also be adjusted adaptively. The distance between the bent top of the elastic part 43 and the first inner wall 32111 is 0.15mm-0.30mm. Of course, this distance can also be adjusted adaptively.

[0050] Equivalent to, such as Figure 5 As shown, the elastic part 43 satisfies the following conditions:

[0051] D = d1 + d2;

[0052] d1>0;

[0053] d1 <d2;

[0054] Wherein, D is the distance between the first inner wall 32111 and the second inner wall 32112, d1 is the distance between the bent top of the elastic part 43 and the first inner wall 32111, and d2 is the distance between the bent top of the elastic part 43 and the second inner wall 32112.

[0055] The ratio of d1 to d2 is 1:8 to 1:15; d1 is 0.15mm to 0.30mm.

[0056] Both the first connecting portion 41 and the second connecting portion 42 are flat. The first connecting portion 41, on the side away from the first magnet portion 32, has a first positive electrode pad 411 and a first negative electrode pad 412 spaced apart. The second connecting portion 42, on the side away from the diaphragm 21, has a second positive electrode pad 421 and a second negative electrode pad 422 spaced apart. The second positive electrode pad 421 and the second negative electrode pad 422 are fixedly electrically connected to the positive and negative terminals of the voice coil 22, respectively. The first positive electrode pad 411 and the second positive electrode pad 421 are electrically connected to form a first circuit, and the first negative electrode pad 412 and the second negative electrode pad 422 are electrically connected to form a second circuit. The first circuit and the second circuit are insulated from each other. This is equivalent to using a flexible circuit board for the elastic conductive element 4. This not only achieves an elastic connection but also ensures insulation between the first and second circuits in the connection of the single-arm elastic conductive element 4, eliminating the need for separate solder pad circuits through the two elastic conductive elements 4, thus simplifying assembly.

[0057] In this embodiment, the second positive pad 421 and the second negative pad 422 can be electrically connected to the two ends of the voice coil 22 through two spaced-apart leads 413, with the leads 413 spaced apart from the diaphragm 21. Of course, the leads can be additional metal wires, or they can be line segments led out from the positive and negative terminals of the voice coil 22 respectively.

[0058] The first fixing part 231 in the frame 23 is spaced apart from the voice coil 22, and the lead wire 413 is led out from the spaced position between the first fixing part 231 and the voice coil 22.

[0059] The second connecting portion 42 is recessed inward on the side near the elastic portion 43 to form a groove 423; the end of the elastic portion 43 near the second connecting portion 42 extends to the bottom wall of the groove 423 to form a fixed connection and is spaced apart from the side wall of the groove 423. This design can better provide positions for the second positive electrode pad 421 and the second negative electrode pad 422, and can lengthen the elastic portion 43 to give it a better elastic effect.

[0060] The main electrode core 322 is provided with a clearance hole 3221 that passes through it and communicates with the second through hole 3211. The orthographic projection of the second connecting part 42 along the first direction falls completely into the clearance hole 3221. The side of the main electrode core 322 near the diaphragm 21 is recessed inward to form two clearance grooves 3222 that are spaced apart and communicate with the clearance hole 3221. The orthographic projections of the two leads 413 along the first direction fall completely into the two clearance grooves 3222 respectively. This design can provide vibration space for the second connecting part 42 and the leads 413 through the clearance hole 3221 and the clearance grooves 3222 respectively, without increasing the height of the sound-generating device 100.

[0061] In this embodiment, since the main pole core 322 needs to be provided with a clearance hole 3221 to avoid the second connecting part 42, the first inner wall 32111 and the second inner wall 32112 are based on the inner wall of the main magnet 321.

[0062] The four corners of the second magnet portion 33 are recessed inward to form notches 333, so that the four corners of the frame 1 are spaced apart from the second magnet portion 33 to form leakage holes 30, which connect the sound-generating cavity 10 to the outside. The sound-generating device 100 also includes a breathable insulating member 5 that completely covers the leakage holes 30. This design can improve the low-frequency efficiency of the sound-generating device 100 through the leakage holes 30 to enhance its bass output, while the breathable insulating member 5 can isolate the sound-generating cavity 10 from the outside.

[0063] In this embodiment, the breathable insulating component 5 is fixed to the basin frame 1, the second magnet part 33 and the magnetic yoke 31 respectively.

[0064] The notch 333 includes a first notch 3331 formed by the inward indentation of the four corner positions of the auxiliary magnet 331 and a second notch 3332 formed by the inward indentation of the four corner positions of the auxiliary pole core 332.

[0065] In this embodiment, the breathable isolation component 5 includes a bottom wall 51 fixed to the magnetic yoke 31 and four side walls 52 extending from the four corners of the bottom wall 51 toward the basket frame 1 and fixed thereto. Each side wall 52 is also fixed to the adjacent two sides of the second magnet part 33 to completely cover the corresponding leakage hole 30. This design not only isolates the sound-generating cavity 10 from the outside world, but also reduces the amount of material used in the breathable isolation component 5, thereby saving the cost of the sound-generating device 100.

[0066] Compared with related technologies, in this embodiment, the elastic conductive element 4 of the sound-generating device 100 includes a U-shaped elastic portion 43 passing through a second through hole 3211 of the first magnet portion 32. The second through hole 43 includes a first inner wall 32111 and a second inner wall 32112 disposed opposite to each other. The opening of the elastic portion 43 faces the second inner wall 32112, and the distance from the bent top of the elastic portion 43 to the first inner wall 32111 is greater than zero and less than the distance from the bent top of the elastic portion 43 to the second inner wall 42112. This allows only a single elastic portion 43 to pass through the second through hole 3211, enabling normal operation. Only one elastic part 43 can be set to pass through the second through hole 3211, thereby avoiding the second through hole 3211 for the elastic part 43 to pass through being too large, so that the first magnet part 32 has sufficient volume, thereby giving the magnetic circuit system 3 sufficient driving force to drive the voice coil 22, ensuring better performance of the sound generating device 100, and making it easier to adjust the position when a single elastic part 43 passes through the hole, which can greatly reduce the assembly difficulty of the elastic conductive part 4; in addition, by using a single lever arm elastic conductive part 4, the bending force of its elastic part 43 is smaller than the vibration force of the diaphragm 21, so that it will not have too much influence on the swaying of the diaphragm 21.

[0067] 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, 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 in a first direction to generate sound; as well as, A magnetic circuit system, fixed to the diaphragm and together with the diaphragm and the vibration system, forms a sound-generating cavity; the magnetic circuit system includes a magnetic yoke, a first magnet portion stacked and fixed to the side of the magnetic yoke near the diaphragm, 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, a first through hole penetrating the magnetic yoke, and a second through hole penetrating the first magnet portion and communicating with the first through hole; a voice coil is inserted in the magnetic gap, and the inner walls of opposite sides of the second through hole along a second direction are defined as a first inner wall and a second inner wall, respectively, the second direction being perpendicular to the first direction; characterized in that... The sound-generating device further includes an elastic conductive element, which is located inside the voice coil and passes through the second through hole; The elastic conductive element includes a first connecting portion located inside the first through hole and fixed to the side of the first magnet portion away from the diaphragm, a second connecting portion fixed to the side of the diaphragm close to the first magnet portion and electrically connected to the voice coil, and a U-shaped elastic portion; the elastic portion passes through the second through hole and is spaced apart from the first magnet portion, the two ends of the elastic portion are respectively connected to the first connecting portion and the second connecting portion, and the opening of the elastic portion faces the second inner wall; The distance between the first inner wall and the second inner wall is equal to the sum of the distance between the bent top of the elastic part and the first inner wall and the distance between the bent top of the elastic part and the second inner wall. The distance between the bent top of the elastic part and the first inner wall is greater than zero, and the distance between the bent top of the elastic part and the first inner wall is less than the distance between the bent top of the elastic part and the second inner wall.

2. The sound-generating device as described in claim 1, characterized in that, The ratio of the distance from the bent top of the elastic part to the first inner wall to the distance from the bent top of the elastic part to the second inner wall is 1:8-1:

15.

3. The sound-generating device as described in claim 2, characterized in that, The distance from the bent top of the elastic part to the first inner wall is 0.15mm-0.30mm.

4. The sound-generating device as described in claim 1, characterized in that, Both the first connecting portion and the second connecting portion are flat. The first connecting portion is provided with a first positive electrode pad and a first negative electrode pad at intervals on the side away from the first magnet portion. The second connecting portion is provided with a second positive electrode pad and a second negative electrode pad at intervals on the side away from the diaphragm. The second positive electrode pad and the second negative electrode pad are fixedly electrically connected to the positive and negative terminals of the voice coil, respectively. The first positive electrode pad and the second positive electrode pad are electrically connected to form a first circuit, and the first negative electrode pad and the second negative electrode pad are electrically connected to form a second circuit. The first circuit and the second circuit are insulated from each other.

5. The sound-generating device as described in claim 4, characterized in that, The second connecting portion is recessed on the side near the elastic portion to form a groove; the end of the elastic portion near the second connecting portion extends to the bottom wall of the groove to form a fixed position and is spaced apart from the side wall of the groove.

6. The sound-generating device as described in claim 5, 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 main pole core is provided with a clearance hole that passes through it and communicates with the second through hole, and the second connecting part is completely placed in the clearance hole along the orthographic projection of the first direction; the second through hole is provided to pass through the main magnet and the main pole core in sequence, and the first connecting part is fixed on the side of the main magnet away from the diaphragm.

7. The sound-generating device as described in claim 1, characterized in that, Both the basin frame and the magnetic circuit system are rectangular rings; the four corners of the second magnet are recessed inward to form notches, so that the four corners of the basin frame are spaced apart from the second magnet to form leakage holes, which connect the sound-generating cavity to the outside; the sound-generating device also includes a breathable insulating component that completely covers the leakage holes.

8. The sound-generating device as described in claim 7, characterized in that, The breathable insulating component includes a bottom wall fixed to the magnetic yoke and four side walls of the basin frame that are bent and extended from the four corners of the bottom wall toward the basin frame; each side wall is also fixed to the adjacent two sides of the second magnet part to completely cover the corresponding leakage hole.

9. The sound-generating device as described in claim 8, characterized in that, The second magnet part includes a secondary magnet stacked and fixed on the side of the magnetic yoke near the diaphragm and a secondary pole core stacked and fixed on the side of the secondary magnet near the diaphragm; the notch includes a first notch formed by the four corner positions of the secondary magnet being recessed inward and a second notch formed by the four corner positions of the secondary pole core being recessed inward.

10. The sound-generating device as claimed in claim 1, characterized in that, The vibration system further includes a frame; the frame includes a first fixing part fixed to the diaphragm, a second fixing part fixed to the voice coil, and a bent part that extends from the first fixing part toward the second fixing part and is fixedly connected to the second fixing part.

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