Sound production device

Abstract

This invention provides a sound-generating device, comprising: a frame; a vibration system including a diaphragm and at least two voice coils arranged at intervals; a magnetic circuit system including a lower clamp and magnet units, each magnet unit including a main magnet and a secondary magnet spaced apart from the main magnet to form a magnetic gap; each voice coil is inserted into a magnetic gap; the sound-generating device further includes elastic supports, one elastic support is provided between every two adjacent voice coils; each elastic support includes a first connecting portion, a second connecting portion, a third connecting portion, a first elastic portion, and a second elastic portion; the first elastic portion and the second elastic portion are respectively located between two adjacent secondary magnets. The sound-generating device of this invention can improve the service life of the elastic supports, reduce the planar space occupied by the elastic supports in the sound-generating device, and improve the acoustic performance of the sound-generating device.

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, sound-generating devices have been widely used in small electronic devices such as mobile phones, game consoles, and tablets. Their main purpose is to provide sound playback for these small electronic devices, such as music playback, game sound playback, and video volume playback.

[0003] The sound-generating device includes a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate; wherein, the vibration system includes a diaphragm fixed to the frame and a voice coil for driving the diaphragm to vibrate and generate sound. Of course, in order to enable the vibration system to vibrate and generate sound stably and to receive external electrical energy, the sound-generating device also includes an elastic connection structure with one end fixed to the frame and the other end fixed to the voice coil and electrically connected to the voice coil.

[0004] However, in related technologies, the elastic arm of the elastic connection structure of the sound-generating device is a planar structure. When it vibrates, it uses the excess linear arm to shear and deform to maintain the connection. The deformable arm of the planar structure will not only have internal stress, but also shear stress from deformation. This will not only occupy a large amount of planar space of the sound-generating device, but also lead to a significant reduction in the service life of the elastic connection structure.

[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 occupies little planar space and has a long service life.

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

[0008] Sink stand;

[0009] A vibration system comprising a diaphragm fixed to the frame and at least two spaced-apart voice coils for driving the diaphragm to vibrate and produce sound; and,

[0010] A magnetic circuit system includes a lower clamp fixed to the side of the frame away from the vibration system and magnetic steel units stacked and fixed to the lower clamp on the side closer to the vibration system. The number of magnetic steel units is the same as the number of voice coils. Each magnetic steel includes a main magnet and a secondary magnet arranged around the main magnet and spaced apart from the main magnet to form a magnetic gap. Each voice coil is inserted into one of the magnetic gaps.

[0011] The sound-generating device also includes an elastic support member, with one elastic support member provided between every two adjacent voice coils;

[0012] Each of the elastic supports includes a first connecting portion, a second connecting portion, a third connecting portion, a first elastic portion, and a second elastic portion; the first connecting portion and the second connecting portion are respectively located on opposite sides of the magnetic circuit system along the vibration direction of the vibration system, and the third connecting portion and the first connecting portion are respectively located on the same side of the magnetic circuit system and spaced apart from each other; the first connecting portion and the third connecting portion are respectively fixed to the side of the corresponding auxiliary magnet away from the diaphragm, and the second connecting portion is fixed to the side of the diaphragm close to the magnetic circuit system and electrically connected to the voice coil; the first elastic portion and the second elastic portion are respectively located between two adjacent auxiliary magnets and spaced apart from the auxiliary magnets, and the two ends of the first elastic portion are respectively fixed to the first connecting portion and the second connecting portion, and the two ends of the second elastic portion are respectively fixed to the third connecting portion and the second connecting portion; the lower clamping plate is provided with through-hole clearance grooves corresponding to the positions of the first connecting portion and the third connecting portion, so that the first connecting portion and the third connecting portion of each elastic support are exposed.

[0013] Preferably, both the first elastic portion and the second elastic portion are U-shaped structures, and the opening directions of the first elastic portion and the second elastic portion in each elastic support member are arranged facing each other.

[0014] Preferably, the second connecting portion in each of the elastic supports includes a first fixing portion connected to the first connecting portion, a second fixing portion connected to the third connecting portion, and a third fixing portion connecting the first fixing portion and the second fixing portion. Both ends of one of the voice coils adjacent to the elastic support are connected to the first fixing portion, and both ends of the other voice coil adjacent to the elastic support are connected to the second fixing portion. The first elastic portion in each of the elastic supports bends and extends from the first connecting portion along the vibration direction to the second connecting portion and forms a fixed connection with the second connecting portion. The second elastic portion in each of the elastic supports bends and extends from the third connecting portion along the vibration direction to the second connecting portion and forms a fixed connection with the second connecting portion.

[0015] Preferably, the basin frame is rectangular; the plurality of voice coils are arranged sequentially along the long axis or the short axis of the basin frame.

[0016] Preferably, the auxiliary magnet in each of the magnet units is ring-shaped, and the auxiliary magnets in two adjacent magnet units are spaced apart from each other; or,

[0017] The auxiliary magnets in two adjacent magnet units are connected to each other to form a single structure.

[0018] Preferably, the auxiliary magnet of each magnet unit is ring-shaped, and two adjacent auxiliary magnets are connected into a single structure by a magnetic connection part; the first connection part and the third connection part in each elastic support member are respectively fixed to the magnetic connection part between the corresponding two adjacent auxiliary magnets.

[0019] Preferably, the magnetic circuit system further includes annular upper clamps of the same number as the number of auxiliary magnets, with each upper clamp stacked and fixed on the side of an auxiliary magnet near the diaphragm; the first elastic portion and the second elastic portion of each elastic support are respectively located between two adjacent upper clamps and spaced apart from the two adjacent upper clamps.

[0020] Preferably, the plurality of upper clamping plates are arranged at intervals between each other; or,

[0021] The multiple upper clamping plates are connected in sequence to form an integral structure.

[0022] Preferably, two adjacent upper clamping plates are connected into a single structure by a magnetic clamping plate connecting part; each clamping plate connecting part is provided with a clearance hole through it corresponding to the position of the second connecting part.

[0023] Preferably, the sound-generating device further includes a sealing cover, the number of which is the same as the number of the clearance grooves; each sealing cover includes a sealing body and a limiting portion formed by bending and extending the sealing body from the side away from the main magnet toward the direction close to the diaphragm; the sealing body is disposed in the clearance groove, and the limiting portion is fixed between two adjacent auxiliary magnets.

[0024] Preferably, the first connecting portion of each elastic support includes a first conductive member fixed to one end of the first elastic member away from the second connecting portion and a first encapsulated member injection-molded into the first conductive member and fixed to the auxiliary magnet, wherein the first conductive member is electrically connected to the first elastic member; the third connecting portion of each elastic support includes a second conductive member fixed to one end of the second elastic member away from the second connecting portion and a second encapsulated member injection-molded into the second conductive member and fixed to the auxiliary magnet, wherein the second conductive member is electrically connected to the second elastic member.

[0025] Compared with related technologies, the sound-generating device of this utility model designs the elastic support between two adjacent voice coils, and defines each elastic support as including a first connecting part, a second connecting part, a third connecting part, a first elastic part, and a second elastic part; the first connecting part and the second connecting part are respectively located on opposite sides of the magnetic circuit system along the vibration direction of the vibration system, and the third connecting part and the first connecting part are respectively located on the same side of the magnetic circuit system and are spaced apart from each other; the first connecting part and the third connecting part are respectively fixed to the side of the corresponding auxiliary magnet away from the diaphragm, and the second connecting part is fixed to the side of the diaphragm close to the magnetic circuit system and electrically connected to the voice coil; the two ends of the first elastic part are respectively fixed to the first connecting part and the second connecting part, and the two ends of the second elastic part are respectively fixed to the third connecting part and the second connecting part; the first elastic part and the second elastic part are respectively located between two corresponding adjacent auxiliary magnets and are spaced apart from the auxiliary magnets. This three-dimensional elastic support structure allows the connection to be maintained during vibration through elastic deformation. During elastic deformation, only internal strain forces exist, resulting in reduced stress compared to planar elastic connection structures. This significantly extends the lifespan of the elastic support and reduces the planar space occupied by the sound-generating device. This frees up space for other components, primarily providing more installation space for the magnetic circuit system to improve the acoustic performance of the sound-generating device. Furthermore, the multi-voice coil structure enhances the utilization efficiency of the magnetic circuit system, further improving the acoustic performance of the sound-generating device. Attached Figure Description

[0026] 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:

[0027] Figure 1 A three-dimensional structural schematic diagram of the first sound-generating device provided in the embodiment of this utility model;

[0028] Figure 2 A schematic diagram of the internal structure of the first sound-generating device provided in this embodiment of the utility model;

[0029] Figure 3 This is an exploded view of the structure of the first sound-generating device provided in the embodiment of this utility model;

[0030] Figure 4 for Figure 1 AA-line sectional view;

[0031] Figure 5 for Figure 1 BB line section view;

[0032] Figure 6 A three-dimensional structural diagram of the elastic support member in the first type of sound-generating device provided in this utility model embodiment;

[0033] Figure 7 This is a schematic diagram of the internal structure of the second sound-generating device provided in an embodiment of the present utility model;

[0034] Figure 8 A three-dimensional structural schematic diagram of the third sound-generating device provided in this embodiment of the utility model;

[0035] Figure 9 This is an exploded view of the structure of the third sound-generating device provided in the embodiment of this utility model;

[0036] Figure 10 for Figure 8 CC-line sectional view.

[0037] 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; 3 is the magnetic circuit system; 31 is the lower clamping plate; 311 is the clearance groove; 32 is the magnet; 320 is the magnetic gap; 321 is the main magnet; 322 is the auxiliary magnet; 3221 is the magnetic connection part; 33 is the upper clamping plate; 331 is the clamping plate connection part; 3311 is the clearance hole; 34 is the pole core; 4 is the elastic support; 41 is the first connection part; 411 is the first conductive part; 412 is the first injection molded part; 42 is the second connection part; 421 is the first fixing part; 422 is the second fixing part; 423 is the third fixing part; 43 is the third connection part; 431 is the second conductive part; 432 is the second injection molded part; 44 is the first elastic part; 45 is the second elastic part; 5 is the sealing cover; 51 is the sealing body; and 52 is the limiting part. Detailed Implementation

[0038] 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.

[0039] Example 1

[0040] This utility model embodiment provides a sound-generating device 100, combined with... Figures 1 to 6 As shown, it includes a basin frame 1, a vibration system 2, a magnetic circuit system 3, and an elastic support 4.

[0041] The basin stand 1 is rectangular. Of course, depending on the actual needs, the basin stand 1 can also be designed into other shapes, such as round, oval, trapezoidal, etc.

[0042] The vibration system 2 includes a diaphragm 21 fixed to the frame 1 and at least two voice coils 22 arranged at intervals to drive the diaphragm 21 to vibrate and produce sound. In this embodiment, there are two voice coils 22. Of course, depending on the actual needs, three, four, five, etc., voice coils 22 can also be designed; the multiple voice coils 22 are arranged sequentially along the long axis of the frame 1.

[0043] The magnetic circuit system 3 includes a lower clamping plate 31 fixed to the side of the frame 1 away from the vibration system 2 and a magnet unit 32 stacked and fixed to the side of the lower clamping plate 31 close to the vibration system 2. The number of magnet units 32 is the same as the number of voice coils 22. Each magnet unit 32 includes a main magnet 321 and a secondary magnet 322 arranged around the main magnet 321 and spaced apart from the main magnet 321 to form a magnetic gap 320. Each voice coil 22 is inserted into a magnetic gap 320.

[0044] In this embodiment, the auxiliary magnet 322 of each magnet unit 32 is ring-shaped; the auxiliary magnets 322 in two adjacent magnet units 32 are connected to each other to form an integral structure. This design facilitates installation and production. Specifically, the auxiliary magnets 322 in two adjacent magnet units 32 are connected to each other to form an integral structure through the following magnetic connection part 3221. Of course, depending on actual needs, the auxiliary magnets 322 in two adjacent magnet units 32 can also be arranged at intervals.

[0045] The magnetic circuit system 3 also includes pole cores 34 in the same number as the main magnets 321, with each pole core 34 stacked and fixed on the side of a main magnet 321 near the diaphragm 21.

[0046] The magnetic circuit system 3 also includes annular upper clamping plates 33, the same number as the number of auxiliary magnets 322, with each upper clamping plate 33 stacked and fixed on the side of an auxiliary magnet 322 near the diaphragm 21.

[0047] In this embodiment, multiple upper clamping plates 33 are sequentially connected to form an integral structure. Specifically, two adjacent upper clamping plates 33 are connected to form an integral structure through a clamping plate connecting part 331, which is magnetic. This design facilitates installation and production. Of course, depending on actual needs, multiple upper clamping plates 33 can also be arranged at intervals.

[0048] An elastic support 4 is provided between every two adjacent voice coils 22, that is, the number of elastic support 4 is equal to the number of voice coils 22 minus one.

[0049] Each elastic support 4 includes a first connecting portion 41, a second connecting portion 42, a third connecting portion 43, a first elastic portion 44, and a second elastic portion 45. The first connecting portion 41 and the second connecting portion 42 are located on opposite sides of the magnetic circuit system 3 along the vibration direction of the vibration system 2, and the third connecting portion 43 and the first connecting portion 41 are located on the same side of the magnetic circuit system 3 and are spaced apart from each other. The first connecting portion 41 and the third connecting portion 43 are fixed to the side of two adjacent auxiliary magnets 322 away from the diaphragm 21, and the second connecting portion 42 is fixed to the side of the diaphragm 21 near the magnetic circuit system 3 and is electrically connected to the voice coil 22. The first elastic portion 44 and the second elastic portion 45 are located between two adjacent auxiliary magnets 322 and are spaced apart from the auxiliary magnets 322. The two ends of the first elastic portion 44 are fixed to the first connecting portion 41 and the second connecting portion 42, and the two ends of the second elastic portion 45 are fixed to the third connecting portion 43 and the second connecting portion 42, respectively. This limitation allows the elastic support 4 to be designed as a 3D three-dimensional structure.

[0050] In this embodiment, both the first elastic part 44 and the second elastic part 45 are U-shaped structures. The U-shaped structure of the first elastic part 44 and the second elastic part 45 includes V-shaped and C-shaped, but is not limited to these. It can be any shape that is arc-shaped or similar to an arc, so that it can elastically open and close along the vibration direction. That is, the U-shaped structure of the first elastic part 44 and the second elastic part 45 in this embodiment can connect the first connecting part 41 and the second connecting part 42 that are not on the same plane, and connect the third connecting part 43 and the second connecting part 42 that are not on the same plane, and provide elastic support force.

[0051] In each elastic support 4, the first elastic portion 44 extends from the first connecting portion 41 along the vibration direction to the second connecting portion 42 and forms a fixed connection with the second connecting portion 42. In each elastic support 4, the second elastic portion 45 extends from the third connecting portion 43 along the vibration direction to the second connecting portion 42 and forms a fixed connection with the second connecting portion 42.

[0052] The lower clamping plate 31 has through-holes 311 corresponding to the positions of the first connecting part 41 and the third connecting part 43, so that the first connecting part 41 and the third connecting part 43 of each elastic support member 4 are exposed. This design facilitates the electrical connection of the first connecting part 41 and the second connecting part 42 of each elastic support member 4 with external devices, such as an external power supply, to power the voice coil 22.

[0053] The openings of the first elastic portion 44 and the second elastic portion 45 in each elastic support 4 are arranged facing each other. This design can reduce the space occupied by the elastic support 4.

[0054] Each elastic support 4 includes a second connecting portion 42 comprising a first fixing portion 421 connected to the first connecting portion 41, a second fixing portion 422 connected to the third connecting portion 43, and a third fixing portion 423 connecting the first fixing portion 421 and the second fixing portion 422. Both ends of one voice coil 22 adjacent to the elastic support 4 are connected to the first fixing portion 421, and both ends of the other voice coil 22 adjacent to the elastic support 4 are connected to the second fixing portion 422. The length of the third fixing portion 423 along the long axis of the frame 1 is less than the lengths of the first fixing portion 421 and the second fixing portion 422 along the long axis of the frame 1. This design facilitates the connection of the second connecting portion 42 to the two adjacent voice coils without wasting material.

[0055] The first connecting portion 41 and the third connecting portion 43 in each elastic support 4 are respectively fixed to the magnetic connecting portion 3221 between two adjacent auxiliary magnets 422. The magnetic connecting portion 3221 is spaced apart from the first elastic portion 44 and the second elastic portion 45 in the elastic support 4 on opposite sides along the vibration direction. This design can reduce the space occupied by the elastic support 4 and will not affect the first elastic portion 44 and the second elastic portion 45 from touching the magnetic circuit system 3 when they are elastically deformed, thereby affecting the acoustic performance of the sound-generating device 100. It also facilitates the fixed installation of the first connecting portion 41 and the third connecting portion 43 in the elastic support 4.

[0056] The first elastic portion 44 and the second elastic portion 45 in each elastic support 4 are respectively located between two adjacent upper clamping plates 33 and spaced apart from the two adjacent upper clamping plates 33, and are also spaced apart from the clamping plate connecting portion 331, that is, they are located on opposite sides of the clamping plate connecting portion 331 along the vibration direction. This design can reduce the space occupied by the elastic support 4 and will not affect the first elastic portion 44 and the second elastic portion 45 from contacting the magnetic circuit system 3 when they elastically deform, thereby affecting the acoustic performance of the sound generating device 100.

[0057] Each clamping plate connecting part 331 is provided with a clearance hole 3311 through it at the position corresponding to the second connecting part 42; wherein, there are two clearance holes 3311 spaced apart from each other, and they respectively correspond to the first fixing part 421 and the second fixing part 422 of the second connecting part 42. This design can prevent the second connecting part 42 of the elastic support 4 from colliding with the clamping plate connecting part 331 when the diaphragm 21 drives the elastic support 4 to vibrate.

[0058] The sound-generating device 100 also includes a sealing cover 5, the number of which is the same as the number of clearance grooves 311.

[0059] Each sealing cap 5 includes a sealing body 51 and a limiting portion 52 formed by bending and extending the sealing body 51 from the side away from the main magnet 321 towards the diaphragm 21. The sealing body 51 is disposed within the clearance groove 311, and the limiting portion 52 is fixed between adjacent auxiliary magnets 322. The sealing body 51 does not completely cover the clearance groove 311, at least leaving the position of the clearance groove 311 corresponding to the first connecting portion 41 or the second connecting portion 42 uncovered, so that the first connecting portion 41 and the second connecting portion 42 in each elastic support 4 can be exposed, thereby enabling electrical connection with external devices. This design allows the sealing cap 5 to partially seal the groove and clearance groove 311, achieving a sealing and protective function.

[0060] In this embodiment, the first connecting part 41 is a metal connecting structure integrally formed with or interconnected with the first elastic part 44, and the third connecting part 43 is a metal connecting structure integrally formed with or interconnected with the second elastic part 45.

[0061] Compared with related technologies, the sound-generating device 100 of this utility model designs the elastic support 4 between two adjacent voice coils 22, and defines each elastic support 4 as including a first connecting part 41, a second connecting part 42, a third connecting part 43, a first elastic part 44, and a second elastic part 45; the first elastic part 44 and the second elastic part 45 are both U-shaped structures, and the first elastic part 44 and the second elastic part 45 are respectively located between two corresponding adjacent auxiliary magnets 322 and are spaced apart from the auxiliary magnets 322. In this way, the elastic support member 4 with its three-dimensional structure can maintain the connection during vibration by utilizing the elastic deformation of the three-dimensional structure. During elastic deformation, there is only internal strain force, which reduces the stress compared to the elastic connection structure with a planar structure. This can significantly improve the service life of the elastic support member 4. Moreover, compared to the elastic connection structure with a planar structure, it also significantly reduces the planar space occupied by the sound-generating device 100, allowing the sound-generating device 100 to have extra space for installing other components. This is mainly to provide more installation space for the magnetic circuit system 3, thereby improving the acoustic performance of the sound-generating device 100. At the same time, the use of a multi-voice coil 22 structure can also improve the utilization efficiency of the magnetic circuit system 3, further enhancing the acoustic performance of the sound-generating device 100.

[0062] Example 2

[0063] Unlike Example 1, in combination Figure 7 As shown, in this embodiment, the multiple voice coils 22 are arranged sequentially along the short axis of the frame 1. Since the sound-generating device 100 in this embodiment differs from the sound-generating device 100 in Embodiment 1 only in the arrangement direction of the voice coils 22, the sound-generating device 100 in this embodiment can also achieve the technical effect achieved by the sound-generating device 100 in Embodiment 1, and will not be elaborated here.

[0064] Example 3

[0065] Unlike Example 1, in combination Figure 8 and Figure 10 As shown, each elastic support 4's first connecting portion 41 includes a first conductive element 411 fixed to the end of the first elastic element 44 away from the second connecting portion 42, and a first encapsulated part 412 injection-molded into the first conductive element 411 and fixed to the auxiliary magnet 322. The first conductive element 411 is electrically connected to the first elastic element 44. Each elastic support 4's third connecting portion 43 includes a second conductive element 431 fixed to the end of the second elastic element 45 away from the second connecting portion 42, and a second encapsulated part 432 injection-molded into the second conductive element 431 and fixed to the auxiliary magnet 322. The second conductive element 431 is electrically connected to the second elastic element 45. This design avoids direct contact between the first connecting portion 41 and the third connecting portion 43 and the lower clamping plate 31, thus preventing signal interference, and facilitates the voice coil 22's connection to an external power source through the first connecting portion 41 and the third connecting portion 43.

[0066] Since the sound-generating device 100 in this embodiment differs from the sound-generating device 100 in Embodiment 1 only in the first connecting part 41 and the third connecting part 43, the sound-generating device 100 in this embodiment can also achieve the technical effect achieved by the sound-generating device 100 in Embodiment 1, and will not be elaborated here.

[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, the sound-generating device comprising: Sink stand; A vibration system comprising a diaphragm fixed to the frame and at least two spaced-apart voice coils for driving the diaphragm to vibrate and produce sound; and, A magnetic circuit system, comprising a lower clamp fixed to the side of the frame away from the vibration system and magnetic steel units stacked and fixed to the lower clamp on the side closer to the vibration system, the number of magnetic steel units being the same as the number of voice coils, each magnetic steel unit comprising a main magnet and a secondary magnet arranged around the main magnet and spaced apart from the main magnet to form a magnetic gap; each voice coil is inserted into one of the magnetic gaps; characterized in that... The sound-generating device also includes an elastic support member, with one elastic support member provided between every two adjacent voice coils; Each of the elastic supports includes a first connecting portion, a second connecting portion, a third connecting portion, a first elastic portion, and a second elastic portion; the first connecting portion and the second connecting portion are respectively located on opposite sides of the magnetic circuit system along the vibration direction of the vibration system, and the third connecting portion and the first connecting portion are respectively located on the same side of the magnetic circuit system and spaced apart from each other; the first connecting portion and the third connecting portion are respectively fixed to the side of the corresponding auxiliary magnet away from the diaphragm, and the second connecting portion is fixed to the side of the diaphragm close to the magnetic circuit system and electrically connected to the voice coil; the first elastic portion and the second elastic portion are respectively located between two adjacent auxiliary magnets and spaced apart from the auxiliary magnets, and the two ends of the first elastic portion are respectively fixed to the first connecting portion and the second connecting portion, and the two ends of the second elastic portion are respectively fixed to the third connecting portion and the second connecting portion; the lower clamping plate is provided with through-hole clearance grooves corresponding to the positions of the first connecting portion and the third connecting portion, so that the first connecting portion and the third connecting portion of each elastic support are exposed.

2. The sound-generating device according to claim 1, characterized in that, Both the first elastic part and the second elastic part are U-shaped structures, and the opening directions of the first elastic part and the second elastic part in each elastic support member are arranged facing each other.

3. The sound-generating device according to claim 2, characterized in that, Each of the elastic supports includes a second connecting portion comprising a first fixing portion connected to the first connecting portion, a second fixing portion connected to the third connecting portion, and a third fixing portion connecting the first fixing portion and the second fixing portion. Both ends of one of the voice coils adjacent to the elastic support are connected to the first fixing portion, and both ends of the other voice coil adjacent to the elastic support are connected to the second fixing portion. The first elastic portion of each elastic support extends from the first connecting portion along the vibration direction to the second connecting portion and forms a fixed connection with the second connecting portion. The second elastic portion of each elastic support extends from the third connecting portion along the vibration direction to the second connecting portion and forms a fixed connection with the second connecting portion.

4. The sound-generating device as described in claim 1, characterized in that, The basket frame is rectangular; the multiple voice coils are arranged sequentially along the long axis or the short axis of the basket frame.

5. The sound-generating device according to claim 1, characterized in that, The auxiliary magnet in each of the aforementioned magnet units is ring-shaped, and the auxiliary magnets in two adjacent magnet units are spaced apart from each other; or, The auxiliary magnets in two adjacent magnet units are connected to each other to form a single structure.

6. The sound-generating device according to claim 1, characterized in that, The auxiliary magnet of each magnet unit is ring-shaped, and two adjacent auxiliary magnets are connected into a single structure by a magnetic connection part; the first connection part and the third connection part of each elastic support are respectively fixed to the magnetic connection part between the corresponding two adjacent auxiliary magnets.

7. The sound-generating device according to claim 6, characterized in that, The magnetic circuit system further includes annular upper clamps in the same number as the number of auxiliary magnets, with each upper clamp stacked and fixed on the side of an auxiliary magnet near the diaphragm; the first elastic part and the second elastic part in each elastic support are respectively located between two adjacent upper clamps and spaced apart from the two adjacent upper clamps.

8. The sound-generating device according to claim 7, characterized in that, The multiple upper clamping plates are arranged at intervals between each other; or, The multiple upper clamping plates are connected in sequence to form an integral structure.

9. The sound-generating device according to claim 7, characterized in that, The two adjacent upper clamping plates are connected into a single structure by a magnetic clamping plate connecting part; each clamping plate connecting part is provided with a clearance hole through it corresponding to the position of the second connecting part.

10. The sound-generating device according to claim 1, characterized in that, The sound-generating device also includes a sealing cover, the number of which is the same as the number of the clearance grooves; each sealing cover includes a sealing body and a limiting portion formed by bending and extending the sealing body from the side away from the main magnet toward the direction close to the diaphragm; the sealing body is disposed in the clearance groove, and the limiting portion is fixed between two adjacent secondary magnets.

11. The sound-generating device according to claim 1, characterized in that, Each of the elastic supports has a first connecting portion including a first conductive member fixed to one end of the first elastic member away from the second connecting portion and a first encapsulated member injection-molded into the first conductive member and fixed to the auxiliary magnet, wherein the first conductive member is electrically connected to the first elastic member; and each of the elastic supports has a third connecting portion including a second conductive member fixed to one end of the second elastic member away from the second connecting portion and a second encapsulated member injection-molded into the second conductive member and fixed to the auxiliary magnet, wherein the second conductive member is electrically connected to the second elastic member.

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