Multi-cavity speaker with layered sound

Abstract

The present invention discloses a multi-cavity speaker with a sense of layering, comprising a shell, a bracket, a magnetic circuit assembly, a vibration membrane, a sound guide plate and a cover; the shell has an installation cavity, the bracket is installed in the installation cavity, the magnetic circuit assembly is installed on the bracket, the vibration membrane covers the front side of the bracket, the sound guide plate covers the rear side of the bracket, and the cover covers the rear side of the sound guide plate; the bracket is provided with a sound guide cavity; a first sound cavity is formed between the bracket and the sound guide plate, a second sound cavity is formed between the bracket, the shell and the sound guide plate, and the second sound cavity is connected to the first sound cavity; a circuitous third sound cavity is formed between the sound guide plate and the cover, the sound guide plate has a first through hole and a second through hole both connected to the third sound cavity, the first through hole is connected to the first sound cavity, and the second through hole is connected to the sound guide cavity; a third through hole is provided on the front side of the shell, and the sound guide cavity passes through the third through hole; thereby, it has a multi-cavity structure, expands the sound cavity volume, improves the sound sense and timbre, and the sound extraction has a sense of layering.

Description

Technical Field

[0001] The present invention relates to the field of loudspeaker technology, and in particular to a multi-cavity loudspeaker with a layered feel. Background Art

[0002] In the prior art, headphones typically include a headphone housing and a speaker mounted within the housing. The speaker typically includes a bracket, a U-cup mounted to the bracket, and a diaphragm. A magnet and a washer are mounted within the U-cup, forming a magnetic gap. A voice coil is mounted above the diaphragm, extending into the magnetic gap. A wire electrically connects the voice coil to the diaphragm, causing it to vibrate the diaphragm and produce sound.

[0003] Existing speakers are generally installed in the rear cavity structure of the headphone shell. Since the speaker's own cavity usually has an exhaust structure on the rear side of the speaker, the speaker will be affected by the headphone rear cavity structure, and the sound effect formed by the speaker cavity cannot be guaranteed. In order to avoid the mixing of treble and mid-bass, the mid-bass is usually guided from the rear side of the speaker through the sound guide hole and then out of the front side of the speaker (i.e., the sound wave is guided in reverse phase). However, the sound wave guided from the front side can easily lead to a short circuit between the positive phase sound wave and the reverse phase sound wave. In addition, the existing speaker is limited by the internal component structure, resulting in a small sound cavity volume, which affects the overall sound perception.

[0004] Therefore, in the patent application of the present invention, the applicant has carefully studied a multi-cavity speaker with a sense of hierarchy to solve the above problems. Summary of the Invention

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a multi-cavity speaker with a sense of layering. The speaker has a multi-cavity structure, which expands the cavity volume, improves the sound sense and timbre, and avoids the short circuit of positive-phase sound waves and negative-phase sound waves. The sound output has a sense of layering, and it will not be affected when installed in products such as headphones. After adjusting the best sound effect, it can be directly installed in products such as headphones, reducing the difficulty of assembly and reducing the difficulty of designing and tuning the headphone cavity.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A multi-cavity speaker with a layered feel, comprising a housing, a bracket, a magnetic circuit assembly, a vibration membrane, a sound guide plate and a cover;

[0008] The housing has a mounting cavity opening rearwardly, the bracket is mounted in the mounting cavity, the magnetic circuit assembly is mounted on the bracket and extends into the mounting cavity, the diaphragm covers the front side of the bracket, the sound guide plate covers the rear side of the bracket, and the cover covers the rear side of the sound guide plate; the bracket is provided with a sound guide cavity running through the front and rear sides of the bracket;

[0009] A first sound cavity is formed between the bracket and the sound guide plate and is located outside the magnetic circuit assembly. A second sound cavity is formed between the bracket, the housing and the sound guide plate, and the second sound cavity is connected to the first sound cavity.

[0010] A circuitous third sound cavity is formed between the sound guide plate and the cover. The sound guide plate has a first through hole and a second through hole both connected to the third sound cavity. The first through hole is connected to the first sound cavity, and the second through hole is connected to the sound guide cavity.

[0011] A third through hole is formed on the front side of the shell, and the sound guide cavity passes through the third through hole.

[0012] As a preferred solution, a fourth through hole is opened on the rear side of the magnetic circuit assembly, and the fourth through hole is connected to the first sound cavity.

[0013] As a preferred solution, the magnetic circuit assembly is arranged at the center of the bracket, and a first air vent is provided on the bracket at the periphery of the magnetic circuit assembly, which passes through the front and rear sides of the bracket, and the first air vent is connected to the first sound cavity.

[0014] As a preferred solution, the first air vent is completely open, or the rear side of the first air vent is covered with a first damping member.

[0015] As a preferred solution, the outer peripheral side of the bracket is provided with a first clearance groove which is concave from the outside to the inside, the rear side of the first clearance groove is open, the shell covers the outer peripheral side of the first clearance groove, and the sound guide plate covers the rear side of the first clearance groove, and the aforementioned second sound cavity is formed between the first clearance groove, the shell and the sound guide plate.

[0016] As a preferred solution, a second clearance groove is provided on the rear side of the bracket at the periphery of the magnetic circuit assembly and is recessed from the back to the front, and the aforementioned first sound cavity is formed between the sound guide plate and the second clearance groove.

[0017] As a preferred solution, the rear side of the second relief groove is covered with a cover plate, the cover plate is positioned on the bracket, and a second air vent is provided on the cover plate that passes through the front and rear sides of the cover plate, and the second air vent is connected to the first sound cavity.

[0018] As a preferred solution, the front side of the sound guide plate has a concave cavity which is concave from front to back, the rear side of the magnetic circuit assembly extends into the concave cavity, and the concave cavity is connected to the first sound cavity, the second sound cavity and the first through hole.

[0019] As a preferred solution, a detour channel recessed from back to front is provided on the rear side of the sound guide plate, and the first through hole and the second through hole are respectively connected to the two ends of the detour channel; the cover covers the detour channel to form the aforementioned third sound cavity.

[0020] As a preferred solution, the circuitous channel extends in a circuitous manner along the circumference of the sound guide plate, or the circuitous channel extends in a circuitous manner along the radial direction of the sound guide plate.

[0021] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that it mainly adopts the combined design of the first sound cavity, the second sound cavity and the third sound cavity to provide a multi-sound cavity structure, expand the sound cavity volume and improve the sound sense. By forming a second sound cavity between the bracket, the shell and the sound guide plate, the gas in the second sound cavity can be directly in contact with the shell and vibrate, thereby changing the timbre of the speaker and allowing users to experience a different sound sense. In particular, by forming a circuitous third sound cavity between the sound guide plate and the cover, the sound on the rear side is sequentially transmitted through the first through hole, the third sound cavity and the sound guide plate. , the second through hole is then guided from the sound guide cavity to the front side of the shell, and the circuitous third sound cavity can increase the guide path of the rear sound, so that the front sound guided from the vibration membrane and the rear sound guided from the sound guide cavity have different speeds, thereby avoiding the short circuit of the positive phase sound wave and the reverse phase sound wave, and the sound guide has a sense of fast and slow layers, and, by covering the rear side of the sound guide plate with a cover, it realizes the design of its own independent sound cavity, so that it will not be affected when installed in products such as headphones, and can be directly installed in products such as headphones after adjusting the best sound effect, reducing the difficulty of assembly and reducing the difficulty of designing and tuning the headphone cavity.

[0022] In order to more clearly illustrate the structural features, technical means and specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic three-dimensional diagram of the overall structure of the first embodiment of the present invention;

[0024] Figure 2 This is a three-dimensional schematic diagram of the overall structure of the first embodiment of the present invention from another angle;

[0025] Figure 3 It is an exploded view of the first embodiment of the present invention;

[0026] Figure 4 is another exploded view of the first embodiment of the present invention;

[0027] Figure 5 This is another exploded view of the first embodiment of the present invention;

[0028] Figure 6 It is a front view of the first embodiment of the present invention;

[0029] Figure 7 yes Figure 6 AA cross-sectional view of the structure shown;

[0030] Figure 8 1 is a schematic diagram of the three-dimensional structure of the bracket according to the first embodiment of the present invention;

[0031] Figure 9 yes Figure 8 Another angle diagram of the structure shown;

[0032] Figure 10 2 is a schematic diagram of the three-dimensional structure of the sound guide plate according to the first embodiment of the present invention;

[0033] Figure 11 yes Figure 10 Another angle diagram of the structure shown;

[0034] Figure 12 1 is a schematic diagram of the three-dimensional structure of the cover according to the first embodiment of the present invention;

[0035] Figure 13 It is an exploded view of the second embodiment of the present invention.

[0036] Description of the accompanying drawings:

[0037] 10. Housing 11. Installation cavity

[0038] 12. Third through hole 13. Top plate

[0039] 14. Hollow structure 20. Bracket

[0040] 21. Sound guide cavity 22. First vent hole

[0041] 23. First yield slot 24. Second yield slot

[0042] 25. Installation position 26. Ring limiter

[0043] 27. Arc-shaped positioning groove 30. Vibrating membrane

[0044] 40. Sound guide plate 41. First through hole

[0045] 42. Second through hole 43. Concave cavity

[0046] 44. Positioning protrusion 441. Arc-shaped positioning portion

[0047] 45. Make way cavity 46. Through hole

[0048] 47. Annular limiting groove 48. Positioning cavity

[0049] 49. Detour channel 50. Capping

[0050] 51. Detour card strip 60. Cover plate

[0051] 61, PCB board 70, U cup

[0052] 71. Fourth through hole 80. Magnet

[0053] 90, Huasi 101, First Cavity

[0054] 102, second sound cavity 103, third sound cavity

[0055] 104, fourth sound cavity 201, first damping element

[0056] 202, second damping element 203, third damping element

[0057] 301, voice coil 401, detour slot

[0058] 402. Wire hole. DETAILED DESCRIPTION

[0059] Please refer to Figures 1 to 13 As shown, it shows the specific structures of two embodiments of the present invention.

[0060] like Figures 1 to 12 As shown, it shows the specific structure of the first embodiment of the present invention, a multi-cavity speaker with a sense of hierarchy, including a shell 10, a bracket 20, a magnetic circuit assembly, a vibration membrane 30, a sound guide plate 40 and a cover 50; the shell 10 has an installation cavity 11 with an opening facing backward, the bracket 20 is installed in the installation cavity 11, the magnetic circuit assembly is installed on the bracket 20 and extends into the installation cavity 11, the vibration membrane 30 covers the front side of the bracket 20, the sound guide plate 40 covers the rear side of the bracket 20, and the cover 50 covers the rear side of the sound guide plate 40; the bracket 20 is provided with a sound guide cavity 21 that passes through the front and rear sides of the bracket 20; a sound guide cavity 21 located in the magnetic circuit assembly is formed between the bracket 20 and the sound guide plate 40. A first sound cavity 101 is formed on the periphery of the component, and a second sound cavity 102 is formed between the bracket 20, the shell 10 and the sound guide plate 40, and the second sound cavity 102 is connected to the first sound cavity 101; a circuitous third sound cavity 103 is formed between the sound guide plate 40 and the cover 50, and the sound guide plate 40 has a first through hole 41 and a second through hole 42, both of which are connected to the third sound cavity 103, the first through hole 41 is connected to the first sound cavity 101, and the second through hole 42 is connected to the sound guide cavity 21; a third through hole 12 is provided on the front side of the shell 10, and the sound guide cavity 21 passes through the third through hole 12; and a fourth through hole 71 is provided on the rear side of the magnetic circuit component, and the fourth through hole 71 is connected to the first sound cavity 101.

[0061] Specifically, the magnetic circuit assembly is arranged at the center of the bracket 20, and a first air vent 22 is provided on the periphery of the magnetic circuit assembly on the bracket 20, which passes through the front and rear sides of the bracket 20. The first air vent 22 is connected to the first sound cavity 101. The first air vent 22 is completely open, or the rear side of the first air vent 22 is covered with a first damping member 201. The first damping member 201 is an annular damping member, which is attached to the rear side of the bracket 20 and covers the first air vent 22. There are a plurality of first air vents 22, and the plurality of first air vents 22 are arranged in a circular manner with uniform spacing in the circumferential direction around the center of the bracket 20, and the first damping member 201 covers all the first air vents 22.

[0062] like Figure 8 、 Figure 9 As shown, the outer circumference of the bracket 20 is provided with a first clearance groove 23 that is recessed from the outside to the inside. The rear side of the first clearance groove 23 is open. The shell 10 covers the outer circumference of the first clearance groove 23, and the sound guide plate 40 covers the rear side of the first clearance groove 23. The first clearance groove 23, the shell 10, and the sound guide plate 40 form the aforementioned second sound cavity 102. In addition, the shell 10 is preferably a metal shell. In this way, the gas in the second sound cavity 102 can directly contact the metal shell 10 and vibrate, thereby changing the timbre of the speaker and allowing the user to experience a different sound feeling. The sound guide cavity 21 is located on one side of the first clearance groove 23. The sound guide cavity 21 is not connected to the first clearance groove 23. The first clearance groove 23 is an arc-shaped groove. There are four first clearance grooves 23 on the front side of the first clearance groove 23. The four first clearance grooves 23 are arranged in sequence with uniform spacing along the circumference of the bracket 20.

[0063] like Figure 8 、 Figure 9As shown, the rear side of the bracket 20 is provided with a second clearance groove 24 recessed from the back to the front on the periphery of the magnetic circuit assembly, and the aforementioned first sound cavity 101 is formed between the sound guide plate 40 and the second clearance groove 24. The second clearance groove 24 is an annular groove, the first air vent 22 is connected to the second clearance groove 24, and the first damping member 201 is attached to the inner front side wall of the second clearance groove 24. The bracket 20 has a mounting position 25 for mounting the magnetic circuit assembly that passes through the front and back sides of the bracket 20, and the magnetic circuit assembly is installed at the mounting position 25. The rear side of the second clearance groove 24 is covered with a cover plate 60, and the cover plate 60 is positioned on the bracket 20. The cover plate 60 is provided with a second air vent that passes through the front and back sides of the cover plate 60, and the second air vent is connected to the first sound cavity 101. The second air vent is completely open, or the rear side of the second air vent is covered with a second damping member 202. The rear side of the bracket 20 is provided with an annular stopper 26 protruding rearward from the periphery of the second clearance slot 24. The cover plate 60 is annular in shape; it wraps around the periphery of the magnetic circuit assembly and is restrained by the annular stopper 26. The second ventilation holes include arc-shaped holes and circular holes. There are multiple second ventilation holes, which are arranged in a circular pattern along the center of the cover plate 60. A PCB 61 is attached to the rear side of the cover plate 60. This PCB 61 has an arc-shaped structure.

[0064] like Figure 10 、 Figure 11As shown, the front side of the sound guide plate 40 has a concave cavity 43 that is concave from front to back, and the rear side of the magnetic circuit assembly extends into the concave cavity 43. The concave cavity 43 is connected to the first sound cavity 101, the second sound cavity 102, and the first through hole 41. The fourth through hole 71 is connected to the concave cavity 43. The concave cavity 43 and the second giveway groove 24 form the aforementioned first sound cavity 101. The front inner wall of the sound guide plate 40 is convexly provided with a positioning protrusion 44 in the concave cavity 43. The second through hole 42 is formed on the positioning protrusion 44. The rear side of the bracket 20 is positioned on the positioning protrusion 44. One side of the positioning protrusion 44 is concave with a giveway cavity 45 from front to back on the periphery of the concave cavity 43. The giveway cavity 45 is connected to the concave cavity 43 and the second sound cavity 102. The giveway cavity 45 is concave backward from the inner bottom of the concave cavity 43; the giveway cavity 45 is arranged corresponding to the first giveway groove 23, and the giveway cavity 45 is connected to the first The give-way groove 23; the positioning protrusion 44 is an arc-shaped structure, and there are four positioning protrusions 44. The four positioning protrusions 44 are arranged in sequence at uniform intervals along the circumference of the sound guide plate 40, and the aforementioned give-way cavity 45 is formed between two adjacent positioning protrusions 44; the rear end of the bracket 20 is recessed backward at the rear opening of the sound guide cavity 21 and is connected to the sound guide cavity 21. Correspondingly, the front end of the positioning protrusion 44 is protruding forward at the opening of the second through hole 42 with an arc-shaped positioning portion 441. The second through hole 42 passes through the arc-shaped positioning portion 441, and the arc-shaped positioning groove 27 is adapted to the arc-shaped positioning portion 441.

[0065] like Figure 10 、 Figure 11 As shown, a through hole 46 is provided at the center position of the front side of the sound guide plate 40, which passes through the front and rear sides of the sound guide plate 40. The through hole 46 is connected to the concave cavity 43. In this embodiment, there are four first through holes 41, and the four first through holes 41 are arranged in a circular manner around the periphery of the through hole 46 at uniform intervals. Correspondingly, there are four second through holes 42 and four sound guide cavities 21. The four second through holes 42 are arranged in a circular manner at uniform intervals along the circumference of the sound guide plate 40, and the four sound guide cavities 21 are arranged in a circular manner at uniform intervals along the circumference of the bracket 20. In addition, the periphery of the through hole 46 has an annular surface extending obliquely from front to back. An annular limiting groove 47 is recessed on the outer peripheral side of the front side of the sound guide plate 40 from front to back, and the rear end of the shell 10 is restricted in the annular limiting groove 47. A positioning cavity 48 is recessed on the rear side of the sound guide plate 40 from back to front, and the cover 50 is positioned in the positioning cavity 48.

[0066] like Figure 11As shown, the back side of the sound guide plate 40 is provided with a detour channel 49 recessed from back to front. This detour channel 49 extends in a circuitous manner along the circumference of the sound guide plate 40. The first through-hole 41 and the second through-hole 42 are connected to the two ends of the detour channel 49, that is, the first through-hole 41 is connected to the second through-hole 42 through the detour channel 49, and the front side of the first through-hole 41 is not connected to the second through-hole 42. The cover 50 covers the detour channel 49 to form the aforementioned third sound cavity 103. The detour channel 49 is recessed forward from the front bottom of the positioning cavity 48. This detour channel 49 is not connected to the through-hole 46, and the cover 50 covers the through-hole 46. There are four detour channels 49, which are evenly spaced around the center of the sound guide plate 40. Correspondingly, there are four first through-holes 41 and four second through-holes 42, each of which is connected to the two ends of the corresponding detour channel 49. The rear side of the sound guide plate 40 is provided with a detour slot 401 extending in a detour along the detour channel 49 on the outside of the detour channel 49. Correspondingly, the front side of the cover 50 is provided with a detour clip 51 extending in a detour, which is protruding forward. The detour clip 51 is adapted to the detour slot 401. In addition, in this embodiment, a wire hole 402 is further provided on the sound guide plate 40. The wire hole 402 is connected to the clearance cavity 45. The wire hole 402 is used to pass the wire to facilitate connection to the PCB board 61. After the wire passes through the wire hole 402, the outer opening of the wire hole 402 can be sealed with glue or the sealing cover 50 can be used to seal the wire hole 402 to ensure the sealing of the rear side of the speaker.

[0067] In this embodiment, the front side of the shell 10 has a top plate 13, and the third through hole 12 is formed on the top plate 13; the third through hole 12 is completely open, or the third through hole 12 is covered with a third damping member 203; there are four third through holes 12, and the four third through holes 12 are arranged in sequence with uniform intervals along the circumferential direction around the center of the top plate 13, and each third through hole 12 corresponds to a corresponding sound guide cavity 21, and the third through hole 12 and the third damping member 203 are arc-shaped; a hollow structure 14 is provided in the middle of the top plate 13, and the front end of the bracket 20 is limited by the rear side wall of the top plate 13; the top plate 13 covers the vibration membrane 30 and is arranged at a distance from the vibration membrane 30; a fourth sound cavity 104 is formed between the rear side of the vibration membrane 30 and the front side of the bracket 20, and the fourth sound cavity 104 is connected to the first sound cavity 101.

[0068] In addition, in this embodiment, the magnetic circuit assembly includes a U cup 70, a magnet 80, and a washer 90. The U cup 70 is installed on the bracket 20 and extends into the mounting cavity 11. The magnet 80 is arranged in the U cup 70. The washer 90 is stacked on the magnet 80. A voice coil 301 is installed on the rear side of the vibration membrane 30. The voice coil 301 extends between the U cup 70 and the magnet 80. The fourth through hole 71 is formed at the bottom of the U cup 70.

[0069] In addition, the first damping member 201, the second damping member 202 and the third damping member 203 can be tuning paper, damping mesh, damping paper or metal mesh, etc., and the first damping member 201, the second damping member 202 and the third damping member 203 can be flexibly selected to be covered according to actual production needs, so as to adjust different sound effects.

[0070] Figure 13 The specific structure of Example 2 of the present invention is shown. Its speaker structure is basically the same as that of Example 1, except that: the detour channel 49 extends radially in a detour along the sound guide plate 40, and the sound guide plate 40 is not provided with a detour slot 401 on one side of the detour channel 49. Accordingly, the cover 50 is not provided with a detour strip 51, and the sound guide plate 40 and the cover 50 can be connected by bonding.

[0071] In summary, the design focus of the present invention is that it mainly adopts the combined design of the first sound cavity, the second sound cavity and the third sound cavity to provide a multi-sound cavity structure, expand the sound cavity volume, and improve the sound sense. By forming a second sound cavity between the bracket, the shell and the sound guide plate, the gas in the second sound cavity can be directly in contact with the shell and vibrate, thereby changing the timbre of the speaker and allowing users to experience a different sound sense. In particular, by forming a circuitous third sound cavity between the sound guide plate and the cover, the sound on the rear side is guided through the first through hole, the third sound cavity, the second through hole and then from the sound guide cavity. The third sound cavity extends to the front side of the shell, and the circuitous path of the sound from the rear side is increased, so that the front sound derived from the vibration membrane and the rear sound derived from the sound cavity are different in speed, thereby avoiding the short circuit of the positive-phase sound wave and the reverse-phase sound wave, and the sound derivation has a sense of fast and slow layers. In addition, by covering the rear side of the sound guide plate with a cover, it realizes the design of its own independent sound cavity, so that it will not be affected when installed in products such as headphones. After adjusting the best sound effect, it can be directly installed in products such as headphones, reducing the difficulty of assembly and reducing the difficulty of designing and tuning the headphone cavity.

[0072] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A multi-cavity speaker with a layered sound, characterized by: It includes a shell, a bracket, a magnetic circuit assembly, a vibration membrane, a sound guide plate and a cover; The housing has a mounting cavity opening rearwardly, the bracket is mounted in the mounting cavity, the magnetic circuit assembly is mounted on the bracket and extends into the mounting cavity, the diaphragm covers the front side of the bracket, the sound guide plate covers the rear side of the bracket, and the cover covers the rear side of the sound guide plate; the bracket is provided with a sound guide cavity running through the front and rear sides of the bracket; A first sound cavity is formed between the bracket and the sound guide plate and is located outside the magnetic circuit assembly. A second sound cavity is formed between the bracket, the housing and the sound guide plate, and the second sound cavity is connected to the first sound cavity. A circuitous third sound cavity is formed between the sound guide plate and the cover. The sound guide plate has a first through hole and a second through hole both connected to the third sound cavity. The first through hole is connected to the first sound cavity, and the second through hole is connected to the sound guide cavity. A third through hole is formed on the front side of the housing, and the sound guide cavity passes through the third through hole; A fourth through hole is provided on the rear side of the magnetic circuit assembly, and the fourth through hole is connected to the first sound cavity; a detour channel is provided on the rear side of the sound guide plate, which is recessed from back to front, and the first through hole and the second through hole are respectively connected to the two ends of the detour channel; the cover covers the detour channel to form the third sound cavity.

2. The multi-cavity speaker with layered sound according to claim 1, characterized in that: The magnetic circuit assembly is arranged at the center of the bracket. A first air vent is arranged on the periphery of the magnetic circuit assembly on the bracket and passes through the front and rear sides of the bracket. The first air vent is connected to the first sound cavity.

3. The multi-cavity speaker with layered sound according to claim 2, characterized in that: The first air vent is completely open, or the rear side of the first air vent is covered with a first damping member.

4. The multi-cavity speaker with layered sound according to claim 1, characterized in that: The outer peripheral side of the bracket is provided with a first clearance groove which is recessed from the outside to the inside, and the rear side of the first clearance groove is open. The shell covers the outer peripheral side of the first clearance groove, and the sound guide plate covers the rear side of the first clearance groove. The aforementioned second sound cavity is formed between the first clearance groove, the shell and the sound guide plate.

5. The multi-cavity speaker with layered sound according to claim 1, characterized in that: The rear side of the bracket is located on the periphery of the magnetic circuit component and is provided with a second paving groove which is recessed from the back to the front. The first sound cavity is formed between the sound guide plate and the second paving groove.

6. The multi-cavity speaker with layered sound according to claim 5, characterized in that: The rear side of the second relief groove is covered with a cover plate, the cover plate is positioned on the bracket, and a second air vent is provided on the cover plate that passes through the front and rear sides of the cover plate, and the second air vent is connected to the first sound cavity.

7. The multi-cavity speaker with layered sound according to claim 1, characterized in that: The front side of the sound guide plate has a concave cavity which is concave from front to back. The rear side of the magnetic circuit component extends into the concave cavity. The concave cavity is connected to the first sound cavity, the second sound cavity and the first through hole.

8. The multi-cavity speaker with layered sound according to claim 1, characterized in that: The detour channel extends in a detour along the circumference of the sound guide plate, or the detour channel extends in a detour along the radial direction of the sound guide plate.

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