Loudspeaker box

Abstract

A loudspeaker box, comprising a housing having an accommodating space, a sound outlet passing through the housing and communicated with the accommodating space, and a sound producing unit accommodated in the accommodating space and fixed to the housing. The sound producing unit divides the accommodating space into a front cavity and a rear cavity, and the front cavity is communicated with the sound outlet; the sound producing unit further comprises suspension elastic members, one side of the suspension elastic members is fixedly connected to a basket, and the other side of the suspension elastic members is fixedly connected to a magnetic circuit system, so that the magnetic circuit system is suspended in the basket. The magnetic circuit system is suspended in the basket by means of the suspension elastic members, so that the vibration of a second vibration system is counteracted by the reverse vibration of the magnetic circuit system, thereby finally reducing the vibration of the basket and a component region connected to the basket, reducing and mitigating the vibration sensation caused by holding or touching the loudspeaker box, and improving the user experience. The front cavity space is filled with an elastic gasket, so that the high-frequency resonance of the treble in the front cavity is counteracted, thereby improving the high-frequency acoustic performance of the loudspeaker box.

Description

speaker box Technical Field

[0001] This utility model relates to the field of electroacoustic conversion, and in particular to a loudspeaker box. Background Technology

[0002] In recent years, information technology has developed rapidly, and the popularity of audio devices has been increasing. People's requirements for audio devices are no longer limited to video and audio playback, but also require greater reliability. In particular, with the arrival of the 5G era, mobile multimedia technology has also developed. Many audio devices have multiple entertainment functions, such as video playback, digital photography, games, GPS navigation, etc. As functional requirements increase, the integration of internal components is becoming more and more advanced, and the quality requirements for products are becoming more and more stringent. Technical issues

[0003] In audio equipment, the speaker enclosure is a commonly used electronic component, primarily used for audio signal playback. Its structural design directly affects audio playback quality. Existing speaker enclosures include a housing, a driver unit housed within the housing, and front and rear cavities formed by the driver unit and housing. The driver unit includes a frame, a magnetic circuit system housed within the frame, and a vibration system. The magnetic circuit system drives the vibration system to produce bass and treble frequencies. Existing speaker enclosures are often affected by the space in the front cavity, causing high-frequency resonance that impacts the high-frequency acoustic performance of the speaker enclosure. The area where the frame connects to the frame is affected by the vibration of the vibration system, reducing the user experience. Furthermore, prolonged vibration of the vibration system can lead to fatigue failure of electrical connections.

[0004] Therefore, it is necessary to provide a new speaker enclosure to solve the above-mentioned technical problems. Technical solutions

[0005] The purpose of this invention is to provide a speaker box with superior acoustic performance.

[0006] To achieve the above objectives, this utility model provides a loudspeaker enclosure, which includes a housing with a receiving space, a sound outlet that penetrates the housing and communicates with the receiving space, and a sound-emitting unit that is received in the receiving space and fixed to the housing. The sound-emitting unit divides the receiving space into a front cavity and a rear cavity, and the front cavity communicates with the sound outlet.

[0007] The sound-generating unit includes a frame fixed to the housing and having a receiving space, a vibration system fixed to the frame near the front cavity, a magnetic circuit system located within the receiving space and driving the vibration system to vibrate and generate sound, and a suspension elastic element; the suspension elastic element connects the frame and the magnetic circuit system, such that the magnetic circuit system is suspended within the receiving space.

[0008] The vibration system includes a first vibration system and a second vibration system surrounding the first vibration system and spaced apart from it, the first vibration system and the second vibration system being coaxially arranged; the magnetic circuit system has a first magnetic gap and a second magnetic gap surrounding the first magnetic gap and spaced apart from it, the first vibration system includes a first diaphragm fixed to the outer periphery of the magnetic circuit system and a first voice coil driving the first diaphragm to vibrate and produce sound, the second vibration system includes a second diaphragm in the shape of a ring and a second voice coil driving the second diaphragm to vibrate and produce sound, the outer fixing part of the second diaphragm is fixed to the frame, the inner fixing part of the second diaphragm is fixed to the magnetic circuit system, the first voice coil is inserted in the first magnetic gap and drives the first diaphragm to produce high-frequency sound, the second voice coil is inserted in the second magnetic gap and drives the second diaphragm to produce low-frequency sound.

[0009] Preferably, the sound-generating unit further includes an elastic pad, which is housed in the front cavity. One side of the elastic pad is fixed to the housing, and the other side is fixed to the side of the first diaphragm away from the magnetic circuit system. The elastic pad and the first diaphragm are spaced apart to form a vibration gap.

[0010] Preferably, the sound-generating unit further includes a first cover plate and a second cover plate. The first cover plate is disposed on the side of the first diaphragm away from the magnetic circuit system and spaced apart from the first diaphragm. The second cover plate is fixed to the frame and disposed on the side of the magnetic circuit system away from the vibration system. One side of the elastic pad is fixed to the housing, and the other side is fixed to the side of the first cover plate away from the first diaphragm.

[0011] Preferably, the magnetic circuit system includes a magnetic yoke, a first main magnetic part fixed to the side of the magnetic yoke near the first diaphragm, a secondary magnetic part fixed to the magnetic yoke and arranged around the outer periphery of the first main magnetic part, a secondary pole core stacked and fixed to the side of the secondary magnetic part near the first diaphragm, a ring-shaped first pole core stacked on the side of the first main magnetic part near the first diaphragm, a second main magnetic part stacked and fixed to the side of the first pole core near the first diaphragm, and a second pole core stacked and fixed to the side of the second main magnetic part near the first diaphragm; the side of the secondary magnetic part away from the first main magnetic part is fixedly connected to the suspending elastic element, the first main magnetic part and the secondary magnetic part are spaced apart to form a second magnetic gap, and the second main magnetic part and the first pole core together form the first magnetic gap.

[0012] Preferably, the speaker unit further includes a fixing bracket, which is arranged around the second pole core, the outer periphery of the first diaphragm is fixed to the top of the fixing bracket, and the inner fixing part of the second diaphragm is sandwiched between the bottom of the fixing bracket and the second main magnet.

[0013] Preferably, the first pole core includes an annular pole core body on which the first main magnetic part is stacked and fixed, a pole core wall extending from the inner periphery of the pole core body toward the direction close to the first diaphragm, and a pole core top wall extending from the inner periphery of the pole core wall inward. The second main magnetic part is stacked and fixed on the side of the pole core body close to the first diaphragm, and the second main magnetic part and the pole core wall are spaced apart and together form the first magnetic gap.

[0014] Preferably, the magnetic circuit system further includes a magnetic circuit through-hole formed through the magnetic yoke, the first main magnetic part, and the first pole core; the sound-generating unit further includes a conductive insert embedded in the magnetic circuit through-hole and an elastic conductive member electrically connected to the conductive insert; the conductive insert includes a first conductive part fixed to the side of the first main magnetic part away from the first pole core, a second conductive part bent and extended from the first conductive part toward the direction of the first diaphragm and housed in the magnetic circuit through-hole, and a third conductive part formed by bending and extending the second conductive part, the third conductive part being fixed to the side of the top wall of the pole core near the first diaphragm, the third conductive part being electrically connected to the first voice coil, and the elastic conductive member being electrically connected to the first conductive part.

[0015] Preferably, the elastic conductive element includes a connecting portion electrically connected to the first conductive portion and housed within the magnetic circuit through hole, an extension portion extending outward from the connecting portion and fixedly connected to the side of the magnetic yoke away from the first main magnetic portion, an elastic portion formed by bending and extending the extension portion, and a rear cavity portion bent towards the first diaphragm and extending into the rear cavity.

[0016] Preferably, the second vibration system further includes a frame and a flexible circuit board. The frame is fixed to the second diaphragm and connects the second voice coil and one end of the flexible circuit board. The other end of the flexible circuit board is fixed to the frame, and the flexible circuit board is electrically connected to the second voice coil.

[0017] Preferably, the housing includes a first housing and a second housing, which cooperate to form the receiving space. The sound-emitting unit is fixed to one end of the first housing near the second housing. The front cavity is formed by the first housing and the sound-emitting unit. The sound outlet is formed by penetrating the first housing. The rear cavity is formed by the second housing and the sound-emitting unit. Beneficial effects

[0018] Compared with the prior art, the speaker enclosure of this invention suspends the magnetic circuit system within the frame using a suspended elastic element, thereby canceling out the vibration of the second vibration system by counteracting the reverse vibration of the magnetic circuit system. This ultimately reduces the vibration sensation in the frame and the area of ​​components connected to the frame, reducing and improving the vibration sensation caused by holding or touching the speaker enclosure, thus enhancing the user experience. Furthermore, the elastic gasket filling the front cavity space cancels out the high-frequency resonance of the high frequencies emitted by the first vibration system in the front cavity, improving the high-frequency acoustic performance of the speaker enclosure. Finally, the elastic connector reduces the overall stiffness of the magnetic circuit system while achieving electrical connection with the first vibration system, effectively preventing fatigue failure of the vibration-electrical connection. Attached Figure Description

[0019] 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:

[0020] Figure 1 is a three-dimensional structural diagram of the speaker box provided in an embodiment of the present invention;

[0021] Figure 2 is a partially exploded view of the speaker box provided in an embodiment of the present invention;

[0022] Figure 3 is an exploded view of another part of the speaker box provided in an embodiment of the present invention;

[0023] Figure 4 is a cross-sectional view along line AA in Figure 1;

[0024] Figure 5 is a cross-sectional view along line BB in Figure 1.

[0025] In the diagram, 100 is the speaker enclosure, 200 is the driver unit, 1 is the housing, 11 is the first housing, 12 is the second housing, 13 is the receiving space, 14 is the sound outlet, 15 is the front cavity, 16 is the rear cavity, 2 is the frame, 3 is the first vibration system, 31 is the first diaphragm, 32 is the first voice coil, 33 is the dome, 4 is the second vibration system, 41 is the second diaphragm, 42 is the second voice coil, 43 is the flexible circuit board, 44 is the frame, 5 is the magnetic circuit system, 51 is the yoke, 52 is the first main magnet, and 5 is the sound source. 3. Secondary magnetic part; 54. First pole core; 541. Pole core body; 542. Pole core wall; 543. Pole core top wall; 55. Secondary main magnetic part; 56. Magnetic circuit through hole; 57. First magnetic gap; 58. Second magnetic gap; 59. Secondary pole core; 510. Second pole core; 511. Fixed bracket; 6. Suspension elastic element; 7. Elastic gasket; 81. First cover plate; 82. Second cover plate; 91. Conductive insert; 911. First conductive part; 912. Second conductive part; 913. Third conductive part; 92. Elastic conductive element; 921. Connecting part; 922. Extension part; 923. Elastic part; 924. Rear cavity. Embodiments of the present invention

[0026] 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.

[0027] Referring to Figures 1 to 5, this utility model provides a loudspeaker enclosure 100. The loudspeaker enclosure 100 includes a housing 1 having a receiving space 13, a sound outlet 14 penetrating the housing 1 and communicating with the receiving space 13, and a sound-emitting unit 200 housed in the receiving space 13 and fixed to the housing 1. The sound-emitting unit 200 divides the receiving space 13 into a front cavity 15 and a rear cavity 16, and the front cavity 15 communicates with the sound outlet 14.

[0028] The sound-generating unit 200 includes a basin frame 2 fixed to the housing 1 and having a receiving space, a vibration system fixed to the side of the basin frame 2 near the front cavity 15, a magnetic circuit system 5 located in the receiving space and driving the vibration system to vibrate and generate sound, and a suspension elastic element 6.

[0029] In this embodiment, the housing 1 includes a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 cooperate to form the receiving space 13. The sound-emitting unit 200 is fixed to one end of the first housing 11 near the second housing 12. The front cavity 15 is formed by the first housing 11 and the sound-emitting unit 200. The sound outlet 14 is formed by penetrating the first housing 11. The rear cavity 16 is formed by the second housing 12 and the sound-emitting unit 200.

[0030] The vibration system includes a first vibration system 3 and a second vibration system 4 surrounding the first vibration system 3 and spaced apart from each other. The first vibration system 3 and the second vibration system 4 are coaxially arranged. The magnetic circuit system 5 is provided with a first magnetic gap 57 and a second magnetic gap 58 surrounding the first magnetic gap 57 and spaced apart from each other. The first vibration system 3 includes a first diaphragm 31 whose outer periphery is fixed to the magnetic circuit system 5 and a first voice coil 32 that drives the first diaphragm 31 to vibrate and produce sound. The second vibration system 4 includes a ring-shaped second diaphragm 41 and a second voice coil 42 that drives the second diaphragm 41 to vibrate and produce sound. The outer fixing part of the second diaphragm 41 is fixed to the frame 2, and the inner fixing part of the second diaphragm 41 is fixed to the magnetic circuit system 5. The first voice coil 32 is inserted in the first magnetic gap 57 and drives the first diaphragm 31 to produce high-frequency sound. The second voice coil 42 is inserted in the second magnetic gap 58 and drives the second diaphragm 41 to produce low-frequency sound. It should be noted that the fixing methods for the first diaphragm 31 and the second diaphragm 41 to the magnetic circuit system 5 include, but are not limited to, directly fixing them to the magnetic circuit system 5 or indirectly fixing them to the magnetic circuit system 5 through a medium. For example, in this embodiment, indirect fixing can be achieved through a fixing bracket 511.

[0031] In this embodiment, the first vibration system 3 further includes a dome 33 fixed to the inner periphery of the first diaphragm 31.

[0032] In this embodiment, the second vibration system 4 further includes a flexible circuit board 43 and a frame 44. The frame 44 is fixed to the second diaphragm 42, and the frame 44 connects the second voice coil 41 and one end of the flexible circuit board 43. The other end of the flexible circuit board 43 is fixed to the frame 2, and the flexible circuit board 43 is electrically connected to the second voice coil 41.

[0033] In this embodiment, the magnetic circuit system 5 includes a magnetic yoke 51, a first main magnetic part 52 fixed to the side of the magnetic yoke 51 near the first diaphragm 31, a secondary magnetic part 53 fixed to the magnetic yoke 51 and arranged around the outer periphery of the first main magnetic part 52, a first pole core 54 stacked and arranged in an annular shape with the side of the first main magnetic part 52 near the first diaphragm 31, a second main magnetic part 55 stacked and fixed to one end of the first pole core 54 near the first diaphragm 31, a secondary pole core 59 stacked and fixed to the side of the secondary magnetic part 53 near the first diaphragm 31, a second pole core 510 stacked and fixed to the side of the second main magnetic part 55 near the first diaphragm 31, and a fixing bracket 511.

[0034] The fixed bracket 511 is arranged around the second pole core 510. The outer periphery of the first diaphragm 31 is fixed to the top of the fixed bracket 511. The inner fixed part of the second diaphragm 41 is sandwiched between the bottom of the fixed bracket 511 and the second main magnetic part 55. The side of the auxiliary magnetic part 53 away from the first main magnetic part 52 is fixedly connected to the suspension elastic member 6. The first main magnetic part 52 and the auxiliary magnetic part 53 are spaced apart to form the second magnetic gap 58. The second main magnetic part 55 and the first pole core 54 together form the first magnetic gap 57.

[0035] In this embodiment, the first pole core 54 includes an annular pole core body 541 that is stacked and fixed to the first main magnetic part 52, a pole core wall 542 that extends from the inner periphery of the pole core body 541 toward the first diaphragm 31 by bending, and a pole core top wall 543 that extends from the inner periphery of the pole core wall 542 inward by bending. The second main magnetic part 55 is stacked and fixed to the side of the pole core body 541 near the first diaphragm 31. The second main magnetic part 55 and the pole core wall 542 are spaced apart and together form the first magnetic gap 57.

[0036] In this embodiment, the magnetic circuit system 5 further includes a magnetic circuit through hole 56 formed through the magnetic yoke 51, the first main magnetic part 52 and the first pole core 54.

[0037] The sound-generating unit 200 also includes a suspension elastic element 6, which connects the frame 2 and the magnetic circuit system 5, suspending the magnetic circuit system 5 within the frame 2. The auxiliary magnet 53, located away from the first main magnet 52, is fixedly connected to the suspension elastic element 6. Two suspension elastic elements 6 are arranged opposite each other on opposite sides of the magnetic circuit system 5. The number of suspension elastic elements 6 can be adjusted according to actual conditions; any number of spaced suspension elastic elements 6 is feasible. The suspension elastic element 6 can be made of any elastic material, such as silicone rubber or foam elastomers. Its structural shape can also be adjusted according to actual conditions, such as block-shaped, arc-shaped, or bent. By suspending the magnetic circuit system 5 within the frame 2 using the suspension elastic element 6, the reverse vibration of the magnetic circuit system 5 cancels out the vibration of the second vibration system 4, ultimately reducing the vibration sensation in the frame 2 and the area of ​​components connected to the frame 2. This reduces and improves the vibration sensation caused by holding or touching the speaker box 100, enhancing the user experience.

[0038] In this embodiment, the sound-generating unit 200 further includes an elastic gasket 7. The elastic gasket 7 is housed in the front cavity 15. One side of the elastic gasket 7 is fixed to the housing 1, and the other side of the elastic gasket 7 is fixed to the side of the first diaphragm 31 away from the magnetic circuit system 5. The elastic gasket 7 and the first diaphragm 31 are spaced apart to form a vibration gap. The elastic gasket 7 can be any elastic material, such as silicone rubber, foam elastomer, etc., and its structure can also be set according to actual conditions, such as block shape, ring shape, etc. By filling the space of the front cavity 15 with the elastic gasket 7, the high-frequency resonance of the high-frequency sound emitted by the first vibration system 3 in the front cavity 15 is canceled, thereby improving the high-frequency acoustic performance of the speaker box 100.

[0039] In this embodiment, the sound-generating unit 200 further includes a first cover plate 81 and a second cover plate 82. The first cover plate 81 is disposed on the side of the first diaphragm 31 away from the magnetic circuit system 5 and spaced apart from the first diaphragm 31. The second cover plate 82 is fixed to the frame 2 and is disposed on the side of the magnetic system 5 away from the vibration system. One side of the elastic pad 7 is fixed to the housing 1, and the other side is fixed to the side of the first cover plate 81 away from the first diaphragm 31.

[0040] The sound-generating unit 200 further includes a conductive insert 91 embedded in the magnetic circuit through hole 56 and an elastic conductive member 92 electrically connected to the conductive insert 91; the conductive insert 91 includes a first conductive part 911 fixed to the side of the first main magnetic part 52 away from the first pole core 54, a second conductive part 912 bent and extended from the first conductive part 911 toward the first diaphragm 31 and housed in the magnetic circuit through hole 56, and a third conductive part 913 formed by bending and extending the second conductive part 912. The third conductive part 913 is fixed to the side of the pole core top wall 543 near the first diaphragm 31. The third conductive part 913 is electrically connected to the first voice coil 32. The elastic conductive member 92 is electrically connected to the first conductive part 911.

[0041] In this embodiment, the elastic conductive member 92 includes a connecting portion 921 electrically connected to the conductive insert 91 and housed within the magnetic through-hole 56; an extension portion 922 extending outward from the connecting portion 921 and fixedly connected to the side of the magnetic yoke 51 away from the first main magnetic part 52; an elastic portion 923 formed by bending and extending the extension portion 922; and a rear cavity portion 924 formed by bending the elastic portion 923 towards the first diaphragm 31 and extending to the rear cavity 16. Any electrical connection design is feasible for the elastic connector, such as an FPC, conductive bent wire, etched or bent metal sheet, etc. Through the elastic connector, while achieving electrical connection with the first vibration system 3, the overall stiffness of the magnetic circuit system 5 is reduced, effectively preventing the problem of vibration electrical connection fatigue failure.

[0042] Compared with the prior art, the speaker enclosure of this utility model suspends the magnetic circuit system within the frame using a suspended elastic element, thereby canceling out the vibration of the second vibration system by counteracting the reverse vibration of the magnetic circuit system. This ultimately reduces the vibration sensation in the frame and the area of ​​components connected to the frame, reducing and improving the vibration sensation caused by holding or touching the speaker enclosure, thus enhancing the user experience. Furthermore, the elastic gasket filling the front cavity space cancels out the high-frequency resonance of the tweeter in the front cavity, improving the high-frequency acoustic performance of the speaker enclosure. Finally, the elastic connector, while achieving electrical connection with the first vibration system, reduces the overall stiffness of the magnetic circuit system, effectively preventing fatigue failure of the vibration-electrical connection.

[0043] 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 loudspeaker enclosure, the loudspeaker enclosure comprising a housing having a receiving space, a sound outlet penetrating the housing and communicating with the receiving space, and a sound-generating unit housed within the receiving space and fixed to the housing, the sound-generating unit dividing the receiving space into a front cavity and a rear cavity, the front cavity communicating with the sound outlet; characterized in that, The sound-generating unit includes a frame fixed to the housing and having a receiving space, a vibration system fixed to the frame near the front cavity, a magnetic circuit system located within the receiving space and driving the vibration system to vibrate and generate sound, and a suspension elastic element; the suspension elastic element connects the frame and the magnetic circuit system, such that the magnetic circuit system is suspended within the receiving space. The vibration system includes a first vibration system and a second vibration system surrounding the first vibration system and spaced apart from it, the first vibration system and the second vibration system being coaxially arranged; the magnetic circuit system has a first magnetic gap and a second magnetic gap surrounding the first magnetic gap and spaced apart from it, the first vibration system includes a first diaphragm fixed to the outer periphery of the magnetic circuit system and a first voice coil driving the first diaphragm to vibrate and produce sound, the second vibration system includes a second diaphragm in the shape of a ring and a second voice coil driving the second diaphragm to vibrate and produce sound, the outer fixing part of the second diaphragm is fixed to the frame, the inner fixing part of the second diaphragm is fixed to the magnetic circuit system, the first voice coil is inserted in the first magnetic gap and drives the first diaphragm to produce high-frequency sound, the second voice coil is inserted in the second magnetic gap and drives the second diaphragm to produce low-frequency sound.

2. The speaker enclosure as described in claim 1, characterized in that, The sound-generating unit also includes an elastic pad, which is housed in the front cavity. One side of the elastic pad is fixed to the housing, and the other side is fixed to the side of the first diaphragm away from the magnetic circuit system. The elastic pad and the first diaphragm are spaced apart to form a vibration gap.

3. The speaker enclosure as described in claim 2, characterized in that, The sound-generating unit also includes a first cover plate and a second cover plate. The first cover plate is disposed on the side of the first diaphragm away from the magnetic circuit system and is spaced apart from the first diaphragm. The second cover plate is fixed to the frame and is disposed on the side of the magnetic circuit system away from the vibration system. One side of the elastic pad is fixed to the housing, and the other side is fixed to the side of the first cover plate away from the first diaphragm.

4. The speaker enclosure as described in claim 1, characterized in that, The magnetic circuit system includes a yoke, a first main magnetic part fixed to the yoke near the first diaphragm, a secondary magnetic part fixed to the yoke and surrounding the outer periphery of the first main magnetic part, a secondary pole core stacked and fixed to the secondary magnetic part near the first diaphragm, a ring-shaped first pole core stacked on the first main magnetic part near the first diaphragm, a second main magnetic part stacked and fixed to the first pole core near the first diaphragm, and a second pole core stacked and fixed to the second main magnetic part near the first diaphragm; the side of the secondary magnetic part away from the first main magnetic part is fixedly connected to the suspending elastic element, the first main magnetic part and the secondary magnetic part are spaced apart to form a second magnetic gap, and the second main magnetic part and the first pole core together form the first magnetic gap.

5. The speaker enclosure as described in claim 4, characterized in that, The speaker unit also includes a fixing bracket, which is arranged around the second pole core. The outer periphery of the first diaphragm is fixed to the top of the fixing bracket, and the inner fixing part of the second diaphragm is sandwiched between the bottom of the fixing bracket and the second main magnet.

6. The speaker enclosure as described in claim 4, characterized in that, The first pole core includes an annular pole core body on which the first main magnetic part is stacked and fixed, a pole core wall extending from the inner periphery of the pole core body toward the direction of the first diaphragm, and a pole core top wall formed by extending from the inner periphery of the pole core wall inward. The second main magnetic part is stacked and fixed on the side of the pole core body near the first diaphragm. The second main magnetic part and the pole core wall are spaced apart and together form the first magnetic gap.

7. The speaker enclosure as described in claim 6, characterized in that, The magnetic circuit system further includes a magnetic circuit through-hole formed through the yoke, the first main magnetic part, and the first pole core; the sound-generating unit further includes a conductive insert embedded in the magnetic circuit through-hole and an elastic conductive element electrically connected to the conductive insert; the conductive insert includes a first conductive part fixed to the side of the first main magnetic part away from the first pole core, a second conductive part bent and extended from the first conductive part toward the direction of the first diaphragm and housed in the magnetic circuit through-hole, and a third conductive part formed by bending and extending the second conductive part, the third conductive part being fixed to the side of the top wall of the pole core near the first diaphragm, the third conductive part being electrically connected to the first voice coil, and the elastic conductive element being electrically connected to the first conductive part.

8. The speaker enclosure as described in claim 7, characterized in that, The elastic conductive element includes a connecting portion electrically connected to the first conductive portion and housed within the magnetic circuit through hole, an extension portion extending outward from the connecting portion and fixedly connected to the side of the magnetic yoke away from the first main magnetic portion, an elastic portion formed by bending and extending the extension portion, and a rear cavity portion bent towards the first diaphragm and extending into the rear cavity.

9. The speaker enclosure as described in claim 1, characterized in that, The second vibration system further includes a frame and a flexible circuit board. The frame is fixed to the second diaphragm and connects the second voice coil and one end of the flexible circuit board. The other end of the flexible circuit board is fixed to the frame and is electrically connected to the second voice coil.

10. The speaker enclosure as claimed in claim 1, characterized in that, The housing includes a first housing and a second housing, which cooperate to form the receiving space. The sound-emitting unit is fixed to one end of the first housing near the second housing. The front cavity is formed by the first housing and the sound-emitting unit. The sound outlet is formed by penetrating the first housing. The rear cavity is formed by the second housing and the sound-emitting unit.

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