Portable sound box with volume-adjustable sound cavity

Abstract

The invention provides a portable sound box with an adjustable sound cavity volume, and relates to the technical field of portable sound boxes, the portable sound box comprises a sound box shell component, a self-cleaning mechanism is installed on one side in the sound box shell component, a sound cavity adjusting mechanism is installed on the other side in the sound box shell component, and the sound cavity adjusting mechanism comprises a sound output module and an extension labyrinth plate. According to the technical scheme, the sound cavity adjusting mechanism can adjust the volume of the sound cavity in the equipment shell and the expanded sound box through the sound cavity adjusting mechanism, so that the sound box can play lossless sound quality in different environments, and the sound quality of the sound box can be improved. In addition, the areas of the two extension labyrinth plates can be driven and adjusted, effective rebounding of sound energy radiation is achieved, the sound quality played by the sound equipment is improved, meanwhile, angle adjustment is conducted on the sound output module, therefore, sound energy is fully conducted to the sound cavity and the extension labyrinth plates, and the practicability of the sound equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of portable audio, and in particular to a portable audio with adjustable sound cavity volume. Background Art

[0002] A speaker refers to a device that can convert audio signals into sound, but in the actual application of audio, the speaker is the terminal of the entire audio system. Its function is to convert audio electrical energy into corresponding sound energy and radiate it into space.

[0003] At present, in the prior art, the sound cavity of the speakers is affected by its volume and the environment. When a loud sound needs to be played, the larger the sound cavity volume is, the better the sound quality will be. As a result, when the speakers are facing different environments, the sound played is limited by the sound cavity, resulting in poor sound quality of the played music. Moreover, when the speakers are used for a long time, dust will adhere to the surface of the sound output module, which will affect the playback quality of the speakers when playing music. Therefore, the present invention proposes a portable speaker with adjustable sound cavity volume. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art that dust adheres to the surface of the sound output module, requiring regular maintenance and increasing manual labor, and that the sound played by the speaker in different environments is limited by the sound cavity, resulting in poor sound quality of the played music.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a portable audio system with adjustable sound cavity volume, comprising an audio housing component, a self-cleaning mechanism is installed on one side of the interior of the audio housing component, a sound cavity adjustment mechanism is installed on the other side of the interior of the audio housing component, the sound cavity adjustment mechanism comprises a sound output module and an extended labyrinth plate, the sound cavity adjustment mechanism can also adjust the sound output module during the sound cavity adjustment process, and the sound cavity adjustment mechanism can also extend and adjust the extended labyrinth plate during the sound cavity adjustment process; the audio housing component comprises an audio housing, a sound amplification outer plate is installed on one side of the audio housing, an inverted hole is also installed on one side of the audio housing, the inverted hole is located below the sound amplification outer plate, and a support base is fixedly connected to the lower surface of the audio housing; the sound cavity adjustment mechanism comprises an extended speaker, the extended speaker is telescopically installed on the rear side of the upper surface of the audio housing, a fixed plate is fixedly connected to the upper surface of the extended speaker, a pull ring is rotatably installed on the upper surface of the fixed plate, and an upper slide rail is fixedly connected to the inner wall of the extended speaker.

[0006] In at least some embodiments, a control panel is provided on the upper surface of the audio shell, an H-shaped mounting plate is fixedly connected to the middle of the inner wall of the audio shell, sound insulation cotton is provided near both sides of the sound amplification outer panel, the sound insulation cotton is fixedly connected to the inner wall of the audio shell, a circuit back panel is fixedly connected to the other side surface of the audio shell, a power supply is electrically connected to one side surface of the circuit back panel, and the power supply is located at the rear inside the audio shell.

[0007] In at least some embodiments, an electric push rod is fixedly connected to the surface of one side of the power supply, and a connecting guide block is fixedly connected to the output shaft of the electric push rod. The connecting guide block is arranged in an L shape, one end of the connecting guide block is electrically connected to the power supply, and the other end of the connecting guide block is electrically connected to the sound output module, and protruding blocks are fixedly connected to both sides of the inner wall of the audio housing.

[0008] In at least some embodiments, a motor seat is installed on the upper slide rail, a No. 2 motor is fixedly connected to the lower surface of the motor seat, an output shaft of the No. 2 motor is fixedly connected to a driving screw, the driving screw is meshingly connected to a mating rod, a center block is fixedly connected to the lower end of the mating rod, and C-shaped mounting plates are rotatably installed on both sides of the center block.

[0009] In at least some embodiments, transmission side plates are rotatably mounted at both ends of the C-shaped mounting plate, a side mounting sheet metal is rotatably mounted at the lower end of each of the transmission side plates, a center axis is fixedly connected to the lower ends of the two side mounting sheet metals, an assembly plate is fixedly connected between the two side mounting sheet metals, a sound output module is mounted in the assembly plate, and a center axis is fixedly connected to the outer side of the lower end of each of the side mounting sheet metals.

[0010] In at least some embodiments, the central axis is rotatably mounted above the H-shaped mounting plate, a mounting sleeve is fixedly mounted on the upper end of the mating rod, one side of the mounting sleeve is fixedly connected to a mounting rail, and two extended labyrinth plates are mounted on one side of the mounting rail.

[0011] In at least some embodiments, a push rod is rotatably installed on the inner side of the same end of the two extended maze plates, and a C-shaped connecting seat is rotatably installed on the other end of the two push rods. A side slide rail is installed on one side of the C-shaped connecting seat, and the side slide rail is fixedly connected to one side of the inner wall of the extended speaker.

[0012] In at least some embodiments, the self-cleaning mechanism includes a slip ring, side connecting plates are fixedly connected on both sides of the slip ring, the slip ring is fixedly connected to one side surface of the H-shaped mounting plate through the side connecting plates, an arc-shaped slider is installed on one side inside the slip ring, a rotating shaft is rotatably installed in the middle of one side of the arc-shaped slider, and a gear ring is fixedly connected to the outer edge of the slip ring.

[0013] In at least some embodiments, a driven gear is fixedly sleeved on the upper end of the rotating shaft, and the driven gear is meshedly connected to the gear ring. A cleaning brush is fixedly connected to the lower end of the rotating shaft, and a mating gear is also sleeved on the cleaning brush. Two mating gears are provided, and the other mating gear is fixedly sleeved on the output shaft of motor No. 1. Motor No. 1 is fixedly connected to the lower surface of the arc-shaped slider.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are: 1. In the present invention, the sound cavity adjustment mechanism can not only adjust the volume of the sound cavity in the device casing and the extended speaker, so that the speaker can play lossless sound quality in different environments, but also drive and adjust the area of ​​the two extended maze plates to achieve effective rebound of sound energy radiation, improve the sound quality of the speaker playback, and at the same time adjust the angle of the sound output module to achieve sufficient conduction of sound energy to the sound cavity and the extended maze plate, thereby improving the practicality of the speaker.

[0015] 2. In the present invention, the connecting guide block is driven to move horizontally by an electric push rod, wherein the connecting guide block can connect the power supply and the sound output module. On the one hand, it can provide power to the sound output module to realize the conversion of electrical energy into sound energy. On the other hand, when the speaker is short-circuited or overloaded, the power supply can be cut off in time, thereby improving the safety of the speaker. In addition, the dust on the surface of the sound output module can be cleaned by the self-cleaning mechanism, thereby extending the service life of the speaker and facilitating the subsequent daily maintenance of the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic three-dimensional diagram of a sound cavity extension structure of a portable speaker with adjustable sound cavity volume is provided for the present invention; Figure 2 A schematic three-dimensional diagram of a sound cavity retracting structure of a portable speaker with adjustable sound cavity volume proposed by the present invention; Figure 3 The present invention provides a portable audio device with adjustable sound cavity volume, and a schematic structural stereogram of one side of the device housing; Figure 4 A schematic three-dimensional diagram of the structure of the other side of the cross section of the device housing of a portable audio device with adjustable sound cavity volume proposed by the present invention; Figure 5 The present invention provides a stereogram showing the overall structure of a speaker housing component of a portable speaker with adjustable sound cavity volume; Figure 6 The present invention provides a schematic three-dimensional diagram of the combined structure of an H-shaped mounting plate and a self-cleaning mechanism of a portable speaker with an adjustable sound cavity volume; Figure 7 The present invention provides a stereogram showing the overall structure of a self-cleaning mechanism of a portable audio system with adjustable sound cavity volume; Figure 8 The present invention provides a stereoscopic diagram showing the cross-sectional structure of an extended speaker box of a portable speaker with adjustable sound cavity volume; Fig. 9 A three-dimensional diagram showing the structure of a sound cavity adjustment mechanism of a portable audio system with adjustable sound cavity volume provided by the present invention; Fig.10 The present invention provides a stereoscopic diagram showing another part of the structure of a sound cavity adjustment mechanism of a portable speaker with adjustable sound cavity volume.

[0017] Legend: 100, speaker housing component; 200, self-cleaning mechanism; 300, sound cavity adjustment mechanism; 101, speaker housing; 102, control panel; 103, sound amplification outer panel; 104, sound insulation cotton; 105, inverted hole; 106, support base; 107, H-shaped mounting plate; 108, power supply; 109, electric push rod; 110, connecting guide block; 111, protruding block; 112, circuit back plate; 201, slip ring; 202, gear ring; 203, side connecting plate; 204, arc-shaped slider; 205, rotating shaft; 206, driven gear; 207, mating gear ; 208, No. 1 motor; 209, cleaning brush; 301, extended speaker; 302, fixing plate; 303, pull ring; 304, No. 2 motor; 305, motor seat; 306, upper slide rail; 307, driving screw rod; 308, matching rod; 309, mounting sleeve; 310, assembly plate; 311, sound output module; 312, center axis; 313, C-shaped mounting plate; 314, center block; 315, transmission side plate; 316, extended labyrinth plate; 317, mounting slide rail; 318, push rod; 319, side slide rail; 320, C-shaped connecting seat; 321, side mounting sheet metal. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Embodiment, according to Figure 1-Figure 10 ,like Figure 1-Figure 4As shown, a portable speaker with adjustable sound cavity volume provided by an embodiment of the present invention includes a speaker shell component 100, a self-cleaning mechanism 200 is installed on one side of the interior of the speaker shell component 100, and a sound cavity adjustment mechanism 300 is installed on the other side of the interior of the speaker shell component 100, the sound cavity adjustment mechanism 300 includes a sound output module 311 and an extended labyrinth plate 316, the sound cavity adjustment mechanism 300 can also adjust the sound output module 311 during the sound cavity adjustment process, and at the same time, the sound cavity adjustment mechanism 300 can also extend and adjust the extended labyrinth plate 316 during the sound cavity adjustment process; as shown Figure 5 As shown, the acoustic shell component 100 includes an acoustic shell 101, a sound amplifying outer plate 103 is installed on one side of the acoustic shell 101, a phase inversion hole 105 is also installed on one side of the acoustic shell 101, and the phase inversion hole 105 is located below the sound amplifying outer plate 103, and a support base 106 is fixedly connected to the lower surface of the acoustic shell 101; Figure 8 As shown, the sound cavity adjustment mechanism 300 includes an extended speaker 301, and the extended speaker 301 is telescopically installed on the rear side of the upper surface of the speaker housing 101. A fixed plate 302 is fixedly connected to the upper surface of the extended speaker 301, and a pull ring 303 is rotatably installed on the upper surface of the fixed plate 302. An upper slide rail 306 is fixedly connected to the inner wall of the extended speaker 301. Pulling the pull ring 303 can pull the extended speaker 301 located in the speaker housing 101 to extend upward.

[0021] like Figure 5As shown, a control panel 102 is provided on the upper surface of the audio housing 101, an H-shaped mounting plate 107 is fixedly connected to the middle of the inner wall of the audio housing 101, sound insulation cotton 104 is provided near both sides of the sound amplification outer plate 103, and the sound insulation cotton 104 is fixedly connected to the inner wall of the audio housing 101, and a circuit back plate 112 is fixedly connected to the other side surface of the audio housing 101, and a power supply 108 is electrically connected to one side surface of the circuit back plate 112, and the power supply 108 is located at the rear of the audio housing 101, and an electric push rod 109 is fixedly connected to one side surface of the power supply 108, and the output shaft of the electric push rod 109 is fixedly connected to a connecting guide block 110, and the connecting guide block 110 is set to an L shape, and the connecting One end of the connecting guide block 110 is electrically connected to the power supply 108, and the other end of the connecting guide block 110 is electrically connected to the sound output module 311. When the sound output module 311 plays music, the sound effect can be expanded through the sound insulation cotton 104 and the sound amplification outer panel 103, making the played sound louder. The inner wall of the audio housing 101 is fixedly connected with protruding blocks 111 on both sides, and the electric push rod 109 pushes the connecting guide block 110 to move horizontally. When one end of the connecting guide block 110 is connected to the power supply 108 and the other end is connected to the sound output module 311, the power supply can provide power to the sound output module 311, and vice versa, the sound output module 311 can be quickly powered on and off. When the audio is overloaded, the power supply can be cut off in time to improve the safety of the audio.

[0022] like Figure 8-Figure 9 As shown, a motor seat 305 is installed on the upper slide rail 306, and a No. 2 motor 304 is fixedly connected to the lower surface of the motor seat 305. The output shaft of the No. 2 motor 304 is fixedly connected to a driving screw rod 307, and the driving screw rod 307 is meshedly connected to a matching rod 308. The lower end of the matching rod 308 is fixedly connected to a center block 314. The No. 2 motor 304 drives the driving screw rod 307 to rotate. The rotation of the driving screw rod 307 can drive the matching rod 308 and the center block 314 to rise and fall along the driving screw rod 307. C-shaped mounting plates 313 are rotatably installed on both sides of the center block 314. The two C-shaped mounting plates 313 can rotate with the center block 314 The C-shaped mounting plate 313 has transmission side plates 315 rotatably mounted on both ends, and each of the transmission side plates 315 has a side mounting sheet metal 321 rotatably mounted on the lower end. The lower ends of the two side mounting sheet metals 321 are fixedly connected with a central axis 312, and an assembly plate 310 is fixedly connected between the two side mounting sheet metals 321. A sound output module 311 is mounted in the assembly plate 310, and the outer side of the lower end of each side mounting sheet metal 321 is fixedly connected with a central axis 312. The central axis 312 is rotatably mounted above the H-shaped mounting plate 107, and the C-shaped mounting plate 313 can push the assembly plate 310 to rotate around the central axis 312 through the transmission side plate 315.

[0023] like Fig.10As shown, a mounting sleeve 309 is fixedly provided on the upper end of the matching rod 308, and a mounting rail 317 is fixedly connected to one side of the mounting sleeve 309. Two extended labyrinth plates 316 are installed on one side of the mounting rail 317. A pushing rod 318 is rotatably installed on the inner side of the same end of the two extended labyrinth plates 316. A C-shaped connecting seat 320 is rotatably installed on the other end of the two pushing rods 318. A side rail 319 is installed on one side of the C-shaped connecting seat 320. The side rail 319 is fixedly connected to one side of the inner wall of the extended speaker 301. When the second motor 304 and the motor seat 305 move horizontally along the upper rail 306, the C-shaped connecting seat 320 will rise and fall along the side rail 319. When the distance between the mounting rail 317 and the side rail 319 is shortened, the two extended labyrinth plates 316 are pushed to extend to both sides along the mounting rail 317 through the limit of the pushing rod 318.

[0024] like Figure 6-Figure 7 As shown, the self-cleaning mechanism 200 includes a slip ring 201, and side connecting plates 203 are fixedly connected on both sides of the slip ring 201. The slip ring 201 is fixedly connected to the surface of one side of the H-shaped mounting plate 107 through the side connecting plates 203. An arc-shaped slider 204 is installed on one side of the slip ring 201. A rotating shaft 205 is rotatably installed in the middle of one side of the arc-shaped slider 204. A gear ring 202 is fixedly connected to the outer edge of the slip ring 201. A driven gear 206 is fixedly sleeved on the upper end of the rotating shaft 205. The driven gear 206 is meshed and connected to the gear ring 202. The rotating shaft 205 A cleaning brush 209 is fixedly connected to the lower end. The rotation of the rotating shaft 205 drives the arc-shaped slider 204 to rotate along the slip ring 201 through the driven gear 206. The rotation of the rotating shaft 205 drives the cleaning brush 209 to clean the dust on the surface of the sound module 311. The cleaning brush 209 is also provided with a matching gear 207. There are two matching gears 207. The other matching gear 207 is fixedly mounted on the output shaft of the No. 1 motor 208. The No. 1 motor 208 is fixedly connected to the lower surface of the arc-shaped slider 204. The No. 1 motor 208 drives the rotating shaft 205 to rotate through the matching gear 207.

[0025] The working principle of the present invention is as follows: when the volume of the sound cavity is adjusted according to the actual application needs, the pull ring 303 can be pulled to pull the extended speaker 301 to extend along the sound housing 101, and at the same time, the second motor 304 is started to drive the driving screw 307 to rotate, and the driving screw 307 rotates to drive the matching rod 308 and the center block 314 to rise and fall. The center block 314 is connected to the side mounting sheet metal 321 through the transmission side plate 315, and can drive the assembly plate 310 to rotate around the central axis 312. By adjusting the assembly plate 310 to be tilted, the assembly plate 310 can be rotated. The sound output module 311 on the H-shaped mounting plate 10 transmits the music to the extended speaker 301 and the interior of the speaker housing 101. At the same time, the area of ​​the two extended labyrinth plates 316 is reduced, so that the music is transmitted in the large sound cavity. When the extended speaker 301 is stored back in the speaker housing 101, the matching rod 308 will move to the upper end of the driving screw rod 307, thereby driving the assembly plate 310 to reset to the top of the H-shaped mounting plate 107. When the extended speaker 301 is lowered, the transmission side plate 315 will be folded and stored with the side mounting sheet metal 321, and at the same time, the driving screw rod 307 and the matching rod 308 will be pushed. 308, the second motor 304 and the motor seat 305 move horizontally along the upper slide rail 306, at this time, the two extended labyrinth plates 316 are limited by the push rod 318, and then the two extended labyrinth plates 316 are pushed to extend to both sides along the installation slide rail 317. The large-area extended labyrinth plate 316 can make the sound played by the speaker more three-dimensional when facing a small-volume sound cavity. In the actual application of the speaker, when the speaker is overloaded, the electric push rod 109 drives the connecting guide block 110 to move horizontally to quickly power on and off the sound output module 311. When the speaker is overloaded, the power supply can be cut off in time to improve the safety of the speaker. When the speaker is used for a long time, the dust on the surface of the sound module 311 needs to be cleaned regularly, otherwise the sound quality of the speaker will be affected. Start the No. 1 motor 208 to drive the rotating shaft 205 to rotate through the matching gear 207. The rotation of the rotating shaft 205 can drive the cleaning brush 209 to clean the dust on the surface of the sound module 311, and can also drive the arc slider 204 to rotate along the slip ring 201, so as to achieve the effect of cleaning the dust on the surface of the sound module 311.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A portable speaker with adjustable sound cavity volume, comprising a speaker housing component (100), characterized in that: A self-cleaning mechanism (200) is installed on one side of the interior of the acoustic shell component (100), and a sound cavity adjustment mechanism (300) is installed on the other side of the interior of the acoustic shell component (100); the sound cavity adjustment mechanism (300) comprises a sound output module (311) and an extended labyrinth plate (316); the sound cavity adjustment mechanism (300) can also adjust the sound output module (311) during the process of adjusting the sound cavity, and the sound cavity adjustment mechanism (300) can also extend and adjust the extended labyrinth plate (316) during the process of adjusting the sound cavity; The sound housing component (100) comprises a sound housing (101), a sound amplifying outer plate (103) being mounted on one side of the sound housing (101), a phase inversion hole (105) being mounted on one side of the sound housing (101), the phase inversion hole (105) being located below the sound amplifying outer plate (103), and a support base (106) being fixedly connected to the lower surface of the sound housing (101); The sound cavity adjustment mechanism (300) comprises an extended sound box (301), the extended sound box (301) being telescopically mounted on the rear side of the upper surface of the sound housing (101), a fixing plate (302) being fixedly connected to the upper surface of the extended sound box (301), a pull ring (303) being rotatably mounted on the upper surface of the fixing plate (302), and an upper slide rail (306) being fixedly connected to the inner wall of the extended sound box (301).

2. A portable speaker with adjustable sound cavity volume according to claim 1, characterized in that: A control panel (102) is provided on the upper surface of the speaker housing (101); an H-shaped mounting plate (107) is fixedly connected to the middle of the inner wall of the speaker housing (101); sound insulation cotton (104) is provided near both sides of the sound amplification outer plate (103); the sound insulation cotton (104) is fixedly connected to the inner wall of the speaker housing (101); a circuit back plate (112) is fixedly connected to the other side surface of the speaker housing (101); a power supply (108) is electrically connected to one side surface of the circuit back plate (112); and the power supply (108) is located at the rear of the inner part of the speaker housing (101).

3. A portable speaker with adjustable sound cavity volume according to claim 2, characterized in that: An electric push rod (109) is fixedly connected to a surface of one side of the power source (108); an output shaft of the electric push rod (109) is fixedly connected to a connecting guide block (110); the connecting guide block (110) is arranged in an L shape; one end of the connecting guide block (110) is electrically connected to the power source (108); and the other end of the connecting guide block (110) is electrically connected to a sound output module (311); and protruding blocks (111) are fixedly connected to both sides of the inner wall of the speaker housing (101).

4. The portable speaker with adjustable sound cavity volume according to claim 1, characterized in that: A motor seat (305) is installed on the upper slide rail (306), a second motor (304) is fixedly connected to the lower surface of the motor seat (305), an output shaft of the second motor (304) is fixedly connected to a driving screw rod (307), the driving screw rod (307) is meshingly connected to a matching rod (308), a center block (314) is fixedly connected to the lower end of the matching rod (308), and C-shaped mounting plates (313) are rotatably mounted on both sides of the center block (314).

5. The portable speaker with adjustable sound cavity volume according to claim 4, characterized in that: Transmission side plates (315) are rotatably mounted on both ends of the C-shaped mounting plate (313); a side mounting sheet metal (321) is rotatably mounted on the lower end of each transmission side plate (315); the lower ends of the two side mounting sheet metals (321) are fixedly connected to a central axis (312); an assembly plate (310) is fixedly connected between the two side mounting sheet metals (321); a sound output module (311) is mounted in the assembly plate (310); and the outer side of the lower end of each side mounting sheet metal (321) is fixedly connected to the central axis (312).

6. The portable speaker with adjustable sound cavity volume according to claim 5, characterized in that: The central shaft (312) is rotatably mounted above the H-shaped mounting plate (107); a mounting sleeve (309) is fixedly sleeved on the upper end of the matching rod (308); a mounting slide rail (317) is fixedly connected to one side of the mounting sleeve (309); and two extended labyrinth plates (316) are mounted on one side of the mounting slide rail (317).

7. The portable speaker with adjustable sound cavity volume according to claim 6, characterized in that: A push rod (318) is rotatably mounted on the inner side of the same end of the two extended labyrinth plates (316), a C-shaped connecting seat (320) is rotatably mounted on the other end of the two push rods (318), a side slide rail (319) is mounted on one side of the C-shaped connecting seat (320), and the side slide rail (319) is fixedly connected to one side of the inner wall of the extended sound box (301).

8. The portable speaker with adjustable sound cavity volume according to claim 1, characterized in that: The self-cleaning mechanism (200) comprises a slip ring (201), side connecting plates (203) are fixedly connected to both sides of the slip ring (201), the slip ring (201) is fixedly connected to a surface of one side of an H-shaped mounting plate (107) via the side connecting plates (203), an arc-shaped slider (204) is installed on one side of the interior of the slip ring (201), a rotating shaft (205) is rotatably installed in the middle of one side of the arc-shaped slider (204), and a gear ring (202) is fixedly connected to the outer edge of the slip ring (201).

9. The portable speaker with adjustable sound cavity volume according to claim 8, characterized in that: A driven gear (206) is fixedly sleeved on the upper end of the rotating shaft (205), and the driven gear (206) is meshingly connected to the gear ring (202). A cleaning brush (209) is fixedly connected to the lower end of the rotating shaft (205), and a matching gear (207) is sleeved on the cleaning brush (209). Two matching gears (207) are provided, and the other matching gear (207) is fixedly sleeved on the output shaft of the first motor (208). The first motor (208) is fixedly connected to the lower surface of the arc-shaped slider (204).

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