A portable Bluetooth smart speaker with DIA sound effect enhancement technology

Abstract

This invention belongs to the field of Bluetooth smart speaker technology, and specifically discloses a portable Bluetooth smart speaker equipped with DIA sound enhancement technology. The portable Bluetooth smart speaker with DIA sound enhancement technology includes protective covers on both sides of the shell, and protective adjustment mechanisms on the outer side of the protective covers and at both ends of the shell. The protective adjustment mechanism includes a fixing sleeve disposed on the outer side of the protective cover, and a protective block hinged to the outer side of the fixing sleeve to prevent damage to the diaphragm and the sound-generating unit. This invention allows for switching between a first and a second sound-emitting cover, optimizing indoor sound quality and structural protection while also increasing outdoor sound amplification and low-frequency propagation distance. This enables the speaker to dynamically adjust its acoustic performance and protective effect according to the usage scenario. After switching, the speaker can be stored and protected using the protective block, thereby improving the overall protection and usability.

Description

Technical Field

[0001] This invention belongs to the field of Bluetooth smart speaker technology, and specifically relates to a portable Bluetooth smart speaker equipped with DIA sound enhancement technology. Background Technology

[0002] With the rapid development of wireless communication, digital audio, and artificial intelligence technologies, portable Bluetooth smart speakers have become mainstream audio devices for mobile entertainment, outdoor travel, and home leisure. Users' demands for portability, stable wireless connections, voice interaction capabilities, and high-fidelity sound quality continue to rise, driving the development of speakers towards miniaturization, intelligence, and high sound quality. Dirac (DIA) digital audio optimization technology significantly improves the sound quality of audio systems through hybrid phase impulse response correction, frequency response compensation, transient optimization, and spatial sound field calibration. Through the deep integration of the Dirac algorithm with dedicated DSPs, acoustic units, and Bluetooth modules, high-fidelity sound output is achieved in a small form factor.

[0003] In existing technologies, the sound outlet cover at the side diaphragm of the speaker mostly adopts a fixed aperture structure, which cannot switch between gradual aperture and large aperture modes, thus limiting the low frequency propagation distance and volume output, and failing to meet the usage needs of diverse scenarios.

[0004] Therefore, it is necessary to invent a portable Bluetooth smart speaker equipped with DIA sound enhancement technology to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a portable Bluetooth smart speaker equipped with DIA sound enhancement technology, thereby resolving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a portable Bluetooth smart speaker equipped with DIA sound enhancement technology, comprising a shell, protective covers on both sides of the shell, and protective adjustment mechanisms on the outer side of the protective covers and at both ends of the shell, the protective adjustment mechanisms comprising: A fixing sleeve is installed on the outside of the protective cover. A protective block is hinged to the outside of the fixing sleeve to prevent damage to the side diaphragm and the sound generating unit. The first sound outlet cover is set inside the fixed sleeve to protect and ensure that the audio is radiated outward normally; The second sound outlet is mounted on the protective block. Both the first and second sound outlets are equipped with a connecting structure for switching between the two sound outlets.

[0007] Furthermore, both the first and second sound outlets have multiple sound outlet holes. The diameter of the sound outlet holes on the first sound outlet gradually decreases from the center to the edge, while the diameter of the sound outlet holes on the second sound outlet is the same and larger than that on the first sound outlet.

[0008] Furthermore, the connecting structure is arranged in a circular array along the center of the first sound outlet cover. The connecting structure includes a telescopic rod, a pull block, a second spring, and a limiting member. The top of the telescopic rod is inserted into the bottom of the first sound outlet cover, and the bottom of the telescopic rod is connected to the housing. A groove is provided at the edge of the first sound outlet cover. The groove is provided with a first spring connected to the pull block. The groove passes through the top of the telescopic rod, and a limiting member is provided inside the groove and at the top of the telescopic rod.

[0009] Furthermore, the telescopic rod is located on the outside of the protective cover. The limiting components include a push rod, a limiting block, and a second spring. The pull block connects to the push rod, which extends through the groove to the top of the movable rod. A limiting block is provided on one side of the push rod, and a locking block is fixedly connected to the top of the limiting block. A slot is provided on the inner wall of the first sound outlet cover, which is connected to the groove. The locking block engages with the slot, and the push rod and the limiting block are pressed together.

[0010] Furthermore, the push rod has a rounded convex side near the limiting block, and the limiting block has an inclined side near the rounded convex side. The rounded convex side is used to press the inclined side. The inner wall of the fixed sleeve has multiple limiting grooves, which are arranged in a circular array around the center of the first sound cover. The limiting block passes through the top of the telescopic rod and is inserted into the limiting groove.

[0011] Furthermore, the top of the protective block is inserted into the housing via two inserts, and the inner wall of the protective block is provided with an installation groove. The side of the second sound cover away from the first sound cover and the inner wall of the installation groove are both fixedly connected with a first magnetic block. The second sound cover is magnetically connected to the inner wall of the installation groove via the first magnetic block.

[0012] Furthermore, both the first and second sound outlet covers are located at the top of the fixed sleeve, and a baffle is provided between the first and second sound outlet covers. A connecting rod is fixedly connected to the middle of the baffle. One end of the connecting rod is inserted into the middle of the first sound outlet cover, and the other end is threadedly connected to the middle of the second sound outlet cover.

[0013] Furthermore, the telescopic rod has a buffer support mechanism at the bottom of the first sound outlet cover. The buffer support mechanism includes a connecting plate and a gear transmission structure. The connecting plate is connected to the telescopic rod, and gear transmission structures are provided on both sides of the connecting plate. The gear transmission structures are symmetrically arranged with respect to the center of the telescopic rod.

[0014] Furthermore, the telescopic rod includes a movable rod, a fixed rod, and a third spring. The bottom of the movable rod is movably connected to the inside of the fixed rod via the third spring. The limiting member is located inside the top of the movable rod, and the bottom of the fixed rod is fixedly connected to the housing.

[0015] Furthermore, an annular groove is provided in the middle of the second sound outlet, and a rotating disk is rotatably connected in the annular groove. The rotating disk has a sound outlet hole with the same diameter as the second sound outlet. A push block is fixedly connected to the rotating disk. An arc-shaped groove is provided at the top of the second sound outlet, and the push block extends through the arc-shaped groove to the top of the second sound outlet. The push block and the inner wall of the arc-shaped groove are magnetically connected by a second magnetic block.

[0016] The technical effects and advantages of this invention are as follows: This invention allows for switching between a first and a second sound-emitting cover, optimizing indoor sound quality and structural protection while also increasing outdoor sound amplification volume and low-frequency propagation distance. This enables the speaker to dynamically adjust its acoustic performance and protective effect according to the usage scenario. After switching, it can also be stored and protected by a protective block, thereby improving the overall protection and usage effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a bottom structural diagram of the housing according to an embodiment of the present invention; Figure 3 This is an internal structural diagram of the housing according to an embodiment of the present invention; Figure 4 This is a structural diagram of the housing, fixing sleeve, and second sound outlet cover according to an embodiment of the present invention; Figure 5 This is a structural diagram of the protective sleeve, telescopic rod, and protective cover according to an embodiment of the present invention; Figure 6 This is a structural diagram of the protective block, the first sound outlet cover, and the telescopic rod according to an embodiment of the present invention; Figure 7 This is a structural diagram of the protective block, the second sound outlet cover, the baffle, and the first sound outlet cover according to an embodiment of the present invention; Figure 8 This is a cross-sectional view of the first sound outlet cover according to an embodiment of the present invention; Figure 9 This is the present invention. Figure 8 Enlarged view of point A; Figure 10 This is a structural diagram of the buffer support mechanism according to an embodiment of the present invention; Figure 11 This is a structural diagram of the second sound outlet cover and rotating disk according to an embodiment of the present invention.

[0018] In the diagram: 1. Shell; 2. Rear diaphragm; 3. Side diaphragm; 4. Protective cover; 5. Fixing sleeve; 6. Protective block; 7. First sound outlet cover; 8. Second sound outlet cover; 9. Sound outlet hole; 10. Pull block; 11. Second spring; 12. Push rod; 13. Limiting block; 14. Second spring; 15. Mounting slot; 16. First magnet; 17. Baffle; 18. Connecting rod; 19. Connecting plate; 20. First rack; 21. Second rack; 22. Gear; 23. Guide plate; 24. Movable rod; 25. Fixing rod; 26. Third spring; 27. Locking block; 28. Rotating disk; 29. ​​Push block. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0020] This invention provides a portable Bluetooth smart speaker equipped with DIA sound enhancement technology, such as... Figures 1 to 6 As shown, the system includes a housing 1, a woofer, a tweeter, a rear diaphragm 2, side diaphragms 3, a protective cover 4, and a protective adjustment structure. A button is located on the top of the housing 1. The housing 1 contains two woofers and two tweeters, one 5.5-inch and one 2-inch, to produce different frequency bands. The rear diaphragm 2 is located on the rear side of the housing 1. Two side diaphragms 3 are also located on both sides of the housing 1, and both the side diaphragms 3 and the rear diaphragm 2 are present to enhance low-frequency radiation and expand the soundstage width and sound layering. A battery compartment is located at the bottom of the housing 1, containing a battery for removal and replacement. The protective cover 4 is set on both sides of the housing 1. The protective cover 4 and the two ends of the housing 1 are provided with protective adjustment mechanisms. The protective adjustment mechanism includes a fixed sleeve 5, a protective block 6, a first sound outlet cover 7, a second sound outlet cover 8 and a connecting structure. The fixed sleeve 5 is set on the outside of the protective cover 4. The protective block 6 is hinged to the outside of the fixed sleeve 5 to prevent damage to the side diaphragm 3 and the sound generating unit. The first sound outlet cover 7 is set inside the fixed sleeve 5 to protect and ensure that the audio is radiated outward normally. The second sound outlet cover 8 is set on the protective block 6. Both the first sound outlet cover 7 and the second sound outlet cover 8 are provided with a connecting structure for switching between the two sound outlet covers. Both the first sound outlet cover 7 and the second sound outlet cover 8 are provided with multiple sound outlet holes 9. The diameter of the sound outlet holes 9 on the first sound outlet cover 7 gradually decreases from the center to the edge. The diameter of the sound outlet holes 9 on the second sound outlet cover 8 is the same and is larger than that of the sound outlet holes 9 on the first sound outlet cover 7.

[0021] Two 5.5-inch woofers are responsible for mid-low and low-frequency sound, providing solid bass extension and dynamic impact. The dual-unit design can improve sound pressure level and low-frequency energy, making it suitable for high-volume playback and outdoor scenarios. Two 2-inch tweeters are responsible for high-frequency sound, restoring vocals, instrument details and high-frequency overtones. The dual units can widen the high-frequency sound field, improve sound transparency and layering. The side diaphragm 3 and rear diaphragm 2 make the music more impactful and the sound quality purer.

[0022] The protective block 6 and the fixing sleeve 5 work together to block dust intrusion and external impacts, providing double protection for the diaphragm 3 and the sound-generating unit, preventing damage. Simultaneously, since the protective block 6 and the fixing sleeve 5 are hinged, the protective block 6 can rotate around the hinge point to both sides of the housing 1 to support it, thereby improving the overall structural stability during use. Because the first sound outlet 7 has a large center hole and small edge holes for its sound outlet holes 9, it is suitable for indoor listening, optimizing sound field uniformity, reducing standing waves, and improving sound quality detail. The second sound outlet 8 has sound outlet holes 9 of the same diameter, with all holes being the same size and a larger diameter, suitable for outdoor sound reinforcement, reducing acoustic impedance, releasing maximum low-frequency energy, and increasing volume and propagation distance. By rotating the protective block 6, the second sound outlet 8 and the baffle 17 rotate to both sides of the housing 1 for support, exposing the first sound outlet 7. Pressing the button on the housing 1 causes the bass unit and tweeter unit to drive their diaphragms to vibrate, generating sound waves of different frequency bands. When the bass unit vibrates, it pushes the air inside the cabinet to flow, causing the side diaphragm 3 and the rear diaphragm 2 to vibrate synchronously, passively radiating low-frequency sound waves. The sound waves radiate outward through the sound outlet 9 on the first sound outlet 7. The connection structure enables the rapid switching and fixing of the first sound outlet 7 and the second sound outlet 8, allowing the speaker to flexibly switch between fine listening and high-power sound amplification modes.

[0023] like Figures 5 to 9As shown, taking the first sound outlet cover 7 as an example, the connecting structure is arranged in a circular array around the center of the first sound outlet cover 7. The connecting structure includes a telescopic rod, a pull block 10, a second spring 14, and a limiting member. The top of the telescopic rod is inserted into one side of the first sound outlet cover 7, and the bottom of the telescopic rod is connected to the housing 1. The telescopic rod includes a movable rod 24, a fixed rod 25, and a third spring 26. The bottom of the movable rod 24 is movably connected to the inside of the fixed rod 25 through the third spring 26. The limiting member is located inside the top of the movable rod 24. The bottom of the fixed rod 25 is fixedly connected to the housing 1. A groove is provided at the edge of the first sound outlet cover 7. A first spring 11 is provided in the groove. The first spring 11 is fixedly connected to the bottom of the pull block 10. The groove passes through the top of the movable rod 24. A limiting member is provided in the groove and at the top of the movable rod 24. The movable rod 24 is located outside the protective cover 4. The limiting member includes a push rod 12. The push rod 12 is fixedly connected to the bottom of the pull block 10. The push rod 12 extends through the groove to the top of the movable rod 24. A limiting block 13 is provided on one side of the push rod 12. The top of the limiting block 13 is fixedly connected to the locking block 27. The inner wall of the first sound cover 7 is provided with a slot. The slot and the groove are connected. The locking block 27 is engaged with the slot. The limiting block 13 is fixedly connected to the inner wall of the top of the telescopic rod through the second spring 14. The limiting block 13 is movably connected to the inner wall of the top of the telescopic rod. The side of the push rod 12 near the limiting block 13 is a round convex side. The side of the limiting block 13 near the round convex side is a sloped side. The round convex side is located at the sloped side. The inner wall of the fixing sleeve 5 is provided with multiple limiting grooves. The multiple limiting grooves are distributed in a circular array around the center of the first sound cover 7. The multiple limiting grooves correspond one-to-one with the groove. The limiting block 13 passes through the top of the telescopic rod and is inserted into the limiting groove.

[0024] Pull block 10, as the operating component of the entire connecting structure, is fixedly connected to push rod 12 at its bottom and connected to first sound cover 7 via first spring 11. It is used to drive push rod 12 to move, thus unlocking the limiting component. First spring 11 provides elastic restoring force to pull block 10. After pressing pull block 10 to unlock, releasing pull block 10 allows pull block 10 and push rod 12 to reset via first spring 11, preparing for the next locking. Driven by pull block 10, it passes through the groove on the edge of first sound cover 7 and extends to the inside of the top of movable rod 24. A rounded convex structure near the limiting block 13 presses against the inclined surface of limiting block 13, driving limiting block 13 to extend and retract. Limiting block 13 drives locking block 27 to engage with limiting grooves and locking slots on the inner wall of fixed sleeve 5, respectively, achieving locking and positioning. Second spring 14 provides outward elastic pushing force, maintaining an extended tendency. One end of the second spring 14 is fixedly connected to the limiting block 13, and the other end is fixedly connected to the inner wall of the top of the movable rod 24. Since the round convex is located at the inclined surface, the round convex presses against the inclined surface, so that the second spring 14 is in a stretched state, providing the limiting block 13 with a continuous outward pushing force, ensuring that the limiting block 13 can be inserted into the limiting slot when it is not unlocked, so that the card block is fixed to the first sound cover 7 by engaging with the card slot, thus preventing the first sound cover 7 from loosening.

[0025] The telescopic rod is inserted into a groove on one side of the first sound outlet cover 7, located outside the protective cover 4. It supports the first sound outlet cover 7 without obstructing the sound outlet channel. The movable rod 24 and the third spring 26 within the telescopic rod buffer the impact force during the switching of the first sound outlet cover 7, while ensuring that the movable rod 24 always maintains an upward supporting state, allowing the first sound outlet cover 7 to fit tightly against the fixed sleeve 5. The circular array of connecting structures ensures even force distribution. The limiting block 13 engages with the limiting groove, and the locking block 27 engages with the locking groove, ensuring that the first sound outlet cover 7 is firmly positioned and not easily loosened after switching. When switching between the first sound cover 7 and the second sound cover 8, first pull the pull block 10, which stretches the first spring 11, causing the push rod 12 to move the round protrusion away from the limiting block 13. The round protrusion no longer presses against the limiting block 13, causing the second spring 14 to contract. Under the elastic action of the second spring 14, the limiting block 13 moves the locking block 27 synchronously to the inside of the top of the movable rod 24, thereby making the first sound cover 7 no longer connected to the fixed sleeve 5. Remove the first sound cover 7 from the fixed sleeve 5 to adapt to the large aperture sound output mode. Then release the pull block 10, and under the action of the spring, the push rod 12 and the pull block 10 return to their original positions. Place the second sound cover 8 on the protective block 6 into the fixed sleeve 5, so that the movable rod 24 and the second sound cover 8 are inserted into each other. The limiting part of the second sound cover 8 is connected to the movable rod 24. Insert the limiting block 13 into the limiting slot, and the locking block 27 engages with the slot, so that it can be used again after replacement. The two limiting slots correspond to two sound output modes, matching the switching requirements of the first sound output cover 7 and the second sound output cover 8, providing structural protection for the speaker's adaptability to all scenarios.

[0026] like Figures 4 to 6 As shown, the top of the protective block 6 is inserted into the housing 1 through two inserts. The inner wall of the protective block 6 is provided with an installation groove 15. The side of the second sound cover 8 away from the first sound cover 7 and the inner wall of the installation groove 15 are both fixedly connected with the first magnet 16. The second sound cover 8 is magnetically connected to the inner wall of the installation groove 15 through the first magnet 16.

[0027] The protective block 6 is positioned relative to the housing 1 by the insertion of the insert block and the housing 1, further improving the stability of the protective block 6 and preventing it from shaking off. Since the first magnetic block 16 is fixed to the side of the second speaker cover 8 away from the first speaker cover 7 and to the inner wall of the mounting groove 15 of the protective block 6, the second speaker cover 8 and the protective block 6 are detachably connected by magnetic attraction. In scenarios involving speaker vibration, movement, and outdoor use, the magnetic attraction ensures the second speaker cover 8 remains stable and does not fall off. When cleaning, replacement, or mode switching is required, it can be easily removed by applying external force, balancing connection reliability and ease of assembly / disassembly. By fixing the second speaker cover 8 to the protective block 6, the first speaker cover 7 and the second speaker cover 8 are easily stored and protected, allowing for quick replacement and adaptability to different usage scenarios.

[0028] like Figure 6 As shown, the first sound outlet cover 7 and the second sound outlet cover 8 are both located at the top of the fixed sleeve 5, and a baffle 17 is provided between the first sound outlet cover 7 and the second sound outlet cover 8. A connecting rod 18 is fixedly connected to the middle of the baffle 17. One end of the connecting rod 18 is inserted into the middle of the first sound outlet cover 7, and the other end is threadedly connected to the middle of the second sound outlet cover 8.

[0029] Both the first and second sound outlet covers 7 and 8 are located at the top of the fixed sleeve 5, with a baffle 17 between them. The baffle 17 is positioned between the first and second sound outlet covers 7 and 8, serving to isolate, position, and support them, preventing them from rubbing against each other and ensuring that their respective sound outlet channels are independent and unobstructed. Furthermore, when the protective block 6 rotates, the baffle 17 protects the second sound outlet cover 8 from dust ingress, preventing it from affecting its use. A connecting rod 18 is fixed to the middle of the baffle 17, with one end inserted into the middle of the first sound outlet cover 7. The movement of the baffle 17 is realized. When the first sound outlet cover 7 needs to be replaced, the protective block 6 drives the second sound outlet cover 8 and the connecting rod 18 to rotate, so that the connecting rod 18 is separated from the first sound outlet cover 7. First, rotate the connecting rod 18 to remove the baffle 17 from the second sound outlet cover 8, and then remove the second sound outlet cover 8 from the protective block 6. The second sound outlet cover 8 is installed and fixed through the connecting structure. Then, the first sound outlet cover 7 is installed in the mounting groove 15. The baffle 17 is inserted into the second sound outlet cover 8 through the connecting rod 18, so that it can still provide protection and use after switching.

[0030] like Figures 8 to 10As shown, there is a buffer support mechanism on the telescopic rod and at the bottom of the first sound outlet cover 7. The buffer support mechanism includes a connecting plate 19 and a gear transmission structure. The connecting plate 19 is connected to the telescopic rod, and gear transmission structures are provided on both sides of the connecting plate 19. The gear transmission structures are symmetrically arranged with respect to the center of the telescopic rod.

[0031] The gear transmission structure includes a first rack 20, a second rack 21, a gear 22, a mounting bracket, and a guide plate 23. The first rack 20 is fixedly connected to the end of the connecting plate 19. The top of the first rack 20 abuts against the bottom of the first sound cover 7. The gear 22 meshes with one side of the first rack 20. The mounting bracket is rotatably connected to the middle of the gear 22. The bottom of the mounting bracket is fixedly connected to the housing 1. The second rack 21 meshes with one side of the gear 22. The guide plate 23 is slidably connected to the bottom of the second rack 21. The bottom of the guide plate 23 is fixedly connected to the housing 1.

[0032] The connecting plate 19 is fixedly connected to the movable rod 24 of the telescopic rod, facilitating the connection of two gear transmission structures. There are two sets of gear transmission structures, symmetrically distributed on both sides of the connecting plate 19 with the central axis of the telescopic rod as the center, ensuring that the buffering force is evenly applied to the bottom of the first sound cover 7, avoiding offset caused by force on one side. Each set of gear transmission structures includes a first rack 20, a second rack 21, a gear 22, a mounting bracket, and a guide plate 23. The first rack 20 is fixedly connected to the end of the connecting plate 19, with its top tightly abutting against the bottom of the first sound cover 7. It is used to receive the vibration and pressure transmitted by the first sound cover 7 and transmit it to the gear 22. The middle part of the gear 22 is rotatably connected to the mounting bracket through a rotating shaft. One side meshes with the first rack 20, and the other side meshes with the second rack 21, playing a role in force transmission and reversal, converting the vertical vibration of the first rack 20 into the vertical sliding of the second rack 21, thus achieving a buffering effect. The bottom of the mounting bracket is fixedly connected to the housing 1, providing stable rotational support for the gear 22 and ensuring that the gear 22 does not loosen or deviate during transmission, thus guaranteeing transmission accuracy. The bottom of the second rack 21 is slidably connected to the guide plate 23, allowing it to reciprocate vertically along the guide plate 23. By meshing with the gear 22, it receives the force transmitted by the first rack 20 and uses its own sliding motion to achieve vibration buffering, offsetting the vibration impact force of the first sound outlet cover 7. The guide plate 23 restricts the movement direction of the second rack 21, ensuring that it can only slide vertically, preventing deviation that could cause the gear 22 to jam and ensuring the stable operation of the buffer mechanism.

[0033] When the speaker is working, the first sound cover 7 or the second sound cover 8 will vibrate. The vibration is transmitted to the gear 22 through the first rack 20. The gear 22 drives the second rack 21 to slide vertically along the guide plate 23, which prevents the vibration from being transmitted to the telescopic rod and the housing 1, prevents the structure from loosening and generating resonance noise, and protects each component from vibration wear.

[0034] like Figure 11As shown, the second sound outlet cover 8 has an annular groove in the middle, and a rotating disk 28 is rotatably connected in the annular groove. The rotating disk 28 has a sound outlet hole 9 with the same diameter as the second sound outlet cover 8. A push block 29 is fixedly connected to the rotating disk 28. An arc-shaped groove is opened at the top of the second sound outlet cover 8. The push block 29 extends through the arc-shaped groove to the top of the second sound outlet cover 8. The push block 29 is magnetically connected to the inner wall of the arc-shaped groove through a second magnetic block.

[0035] In the initial state, the second sound outlet cover 8 and the rotating disk 28 have their apertures aligned and overlapped, the sound outlet channel is fully open, and the sound is transmitted normally and smoothly. When the push block 29 is moved, the push block 29 moves along the arc groove, causing the rotating disk 28 to move synchronously in the annular groove, so that the upper and lower sets of sound outlet holes 9 block each other and shift and gradually change the overlapping conduction area of ​​the double holes. Half of the two sets of sound outlet holes 9 are interconnected and half are blocked, effectively reducing the cross-sectional area of ​​the sound outlet, thereby adjusting the volume of the sound, improving the timbre and sound diffusion effect. After rotation, the position of the push block 29 is fixed by the magnetic force of the second magnetic block, which makes it convenient to use in the low volume mode in the bedroom at night without disturbing others' rest.

[0036] Working principle of this invention: Reference Figures 1 to 11 As shown, during use, in the initial state, all components are in a natural reset and locked state, the battery is normally powered, and the battery is placed in the battery slot at the bottom of the housing 1. The battery supplies power to the various components of the speaker through electrode contact, ensuring that the acoustic system, sound unit and switching structure can work normally. The top of the first rack 20 abuts against the bottom of the first sound cover 7, and the gear 22 is engaged with the first rack 20 and the second rack 21. The second rack 21 is in the initial position on the guide plate 23, ready to buffer vibration at any time. Rotating the protective block 6 separates the plug block from the housing 1. The protective block 6 drives the second sound cover 8 and the baffle 17 to rotate, so that after the protective block 6 rotates, it supports and limits the housing 1 on both sides of the housing 1, maintaining the stability of the housing 1. The second sound cover 8 is fixed in the mounting slot 15 of the protective block 6 by the first magnet 16 and is in a standby state. At the same time, the baffle 17 isolates the second sound cover 8 to effectively block dust, foreign objects and external impacts, which affect the use effect of the second sound cover 8. When the first sound cover 7 is exposed, the fixing sleeve 5 and the opposite diaphragm of the housing 1 are... 3. It forms a double protection with the sound unit to avoid damage to it. When the button on the housing 1 is pressed to open the speaker, the sound wave is radiated normally through the gradual aperture of the first sound cover 7. When the speaker is working, the battery continuously supplies power. The sound unit of the first sound cover 7 generates vibration. The vibration is transmitted to the gear 22 through the first rack 20. The gear 22 drives the second rack 21 to slide vertically along the guide plate 23 to avoid the vibration being transmitted to the telescopic rod, housing 1 and battery slot, to prevent the structure from loosening and generating resonance noise, and at the same time protect each component and battery from vibration wear.

[0037] The protective block 6 and the fixing sleeve 5 work together to prevent dust intrusion and external impacts, providing double protection for the diaphragm 3 and the sound-generating unit, thus preventing damage. Simultaneously, because the protective block 6 and the fixing sleeve 5 are hinged, the protective block 6 can rotate around the hinge point to both sides of the housing 1, supporting the housing 1 and improving the overall structural stability during use. Since the first sound outlet 7 has a large center hole and small edge holes for its sound outlet holes 9, it is suitable for indoor listening, optimizing sound field uniformity, reducing standing waves, and improving sound quality detail. The second sound outlet 8 has sound outlet holes 9 of the same diameter, all of equal size but with a larger diameter, suitable for outdoor sound reinforcement, reducing acoustic impedance, releasing maximum low-frequency energy, and increasing volume and propagation distance. When needed for use in the bedroom late at night, the push block 29 is moved along the arc-shaped groove, causing the rotating disk 28 to move synchronously within the annular groove. This causes the upper and lower sets of sound holes 9 to block each other and shift out of alignment, gradually changing the overlapping and conductive area of ​​the two sets of sound holes. Half of the two sets of sound holes 9 are interconnected, while the other half are blocked. After rotation, the position of the push block 29 is magnetically fixed by the second magnetic block. By adjusting to a low volume mode, the low volume at night is designed to help people sleep without being harsh or disturbing others.

[0038] When the second speaker cover 8 needs to be replaced, first pull the pull block 10 to stretch the first spring 11, causing the pull block 10 to move the push rod 12 and the round convex away from the limiting block 13. At this time, the limiting block 13 is no longer squeezed by the round convex, and the second spring 14 contracts, causing the limiting block 13 and the locking block 27 to move to the top of the movable rod 24, so that the limiting block 13 is no longer inserted into the limiting groove on the fixed sleeve 5, and the locking block 27 is no longer locked into the groove, thus no longer fixing the first speaker cover 7, thereby unlocking the first speaker cover 7 from the fixed sleeve 5. Remove the first speaker cover 7 from the fixed sleeve 5, then release the pull block 10. Under the action of the first spring 11 and the second spring 14, the pull block 10 drives the push rod 12 and the round convex back to their original positions. Then rotate the connecting rod 18, causing the connecting rod 18 to remove the baffle 17 from the second speaker cover 8, and remove the second speaker cover 8 from the mounting slot 1. 5. Separate the first magnetic block 16 on the inner wall of the mounting groove 15 from the first magnetic block 16 on the second sound cover 8. Then pull the pull block 10 away from the movable rod 24. Under the action of the first spring 11, the push rod 12 drives the round protrusion to move, placing the second sound cover 8 on the fixed sleeve 5. Align the movable rod 24 with the second sound cover 8 and insert it. Release the pull block 10 on the second sound cover 8 again. Under the action of the first spring 11, the pull block 10 drives the push rod 12 and the round protrusion to move into the groove. When the pull block 10 is in contact with one side of the second sound cover 8, the push rod 12 drives the round protrusion to move along the inclined surface of the limiting block 13, squeezing the limiting block 13, causing the second spring 14 to stretch. The limiting block 13 passes through the movable rod 24 and inserts into the limiting groove on the fixed sleeve 5. The locking block at the top of the limiting block 13 passes through the groove and engages with the locking groove on the inner wall of the second sound cover 8, thereby fixing the second sound cover 8.

[0039] Place the removed first speaker cover 7 on the mounting slot 15 of the protective block 6, and insert the connecting rod 18 into the middle of the first speaker cover 7, so that the baffle 17 shields and protects the first speaker cover 7. The first magnetic block 16 in the mounting slot 15 is magnetically attracted to the first magnetic block 16 on the first speaker cover 7, so that the first speaker cover 7 is fixed on the protective block 6. At this time, the replacement of the first speaker cover 7 and the second speaker cover 8 is completed. Then start the speaker system for use. Through the sound outlet 9 on the second speaker cover 8, it is suitable for outdoor sound reinforcement, reducing sound resistance, releasing maximum low frequency energy, and improving volume and propagation distance.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A portable Bluetooth smart speaker equipped with DIA sound enhancement technology, characterized in that, include: A housing (1) is provided with protective covers (4) on both sides of the housing (1). Protective adjustment mechanisms are provided on the outer side of the protective covers (4) and at both ends of the housing (1). The protective adjustment mechanisms include: A fixing sleeve (5) is set on the outside of the protective cover (4), and a protective block (6) is hinged on the outside of the fixing sleeve (5) to prevent damage to the side diaphragm (3) and the sound generating unit; The first sound outlet cover (7) is set inside the fixed sleeve (5) to protect and ensure that the audio is radiated outward normally; The second sound cover (8) is set on the protective block (6). Both the first sound cover (7) and the second sound cover (8) are provided with a connection structure for switching between the two sound covers.

2. The portable Bluetooth smart speaker equipped with DIA sound enhancement technology according to claim 1, characterized in that: Both the first sound outlet cover (7) and the second sound outlet cover (8) are provided with multiple sound outlet holes (9). The diameter of the sound outlet holes (9) on the first sound outlet cover (7) gradually decreases from the center to the edge. The diameter of the sound outlet holes (9) on the second sound outlet cover (8) is the same and is larger than that of the sound outlet holes (9) on the first sound outlet cover (7).

3. The portable Bluetooth smart speaker equipped with DIA sound enhancement technology according to claim 2, characterized in that: The connecting structure is arranged in a circular array along the center of the first sound cover (7). The connecting structure includes a telescopic rod, a pull block (10), a second spring (14), and a limiting member. The top end of the telescopic rod is inserted into the bottom of the first sound cover (7), and the bottom end of the telescopic rod is connected to the housing (1). A groove is provided at the edge of the first sound cover (7). The groove is provided with a first spring (11) connected to the pull block (10). The groove passes through the top end of the telescopic rod. A limiting member is provided in the groove and at the top end of the telescopic rod.

4. The portable Bluetooth smart speaker equipped with DIA sound enhancement technology according to claim 3, characterized in that: The telescopic rod is located outside the protective cover (4). The limiting component includes a push rod (12), a limiting block (13), a limiting block (27), and a second spring (14). The pull block (10) is connected to the push rod (12). The push rod (12) extends through the groove to the top of the movable rod (24). A limiting block (13) is provided on one side of the push rod (12). A locking block (27) is fixedly connected to the top of the limiting block (13). A slot is provided on the inner wall of the first sound cover (7). The slot is connected to the groove. The locking block (27) is engaged with the slot. The push rod (12) and the limiting block (13) are pressed together.

5. The portable Bluetooth smart speaker equipped with DIA sound enhancement technology according to claim 4, characterized in that: The push rod (12) is rounded on the side near the limiting block (13), and the limiting block (13) is inclined on the side near the rounded protrusion. The rounded protrusion is used to squeeze the inclined surface. The inner wall of the fixed sleeve (5) is provided with multiple limiting grooves. The multiple limiting grooves are arranged in a circular array around the center of the first sound cover (7). The limiting block (13) passes through the top of the telescopic rod and is inserted into the limiting groove.

6. The portable Bluetooth smart speaker equipped with DIA sound enhancement technology according to claim 5, characterized in that: The top of the protective block (6) is inserted into the housing (1) through two inserts. The inner wall of the protective block (6) is provided with an installation groove (15). The second sound cover (8) away from the first sound cover (7) and the inner wall of the installation groove (15) are both fixedly connected with a first magnet (16). The second sound cover (8) is magnetically connected to the inner wall of the installation groove (15) through the first magnet (16).

7. The portable Bluetooth smart speaker equipped with DIA sound enhancement technology according to claim 6, characterized in that: The first sound outlet cover (7) and the second sound outlet cover (8) are both located at the top of the fixed sleeve (5), and a baffle (17) is provided between the first sound outlet cover (7) and the second sound outlet cover (8). A connecting rod (18) is fixedly connected to the middle of the baffle (17). One end of the connecting rod (18) is inserted into the middle of the first sound outlet cover (7), and the other end is threaded to the middle of the second sound outlet cover (8).

8. The portable Bluetooth smart speaker equipped with DIA sound enhancement technology according to claim 7, characterized in that: The telescopic rod has a buffer support mechanism at the bottom of the first sound cover (7). The buffer support mechanism includes a connecting plate (19) and a gear transmission structure. The connecting plate (19) is connected to the telescopic rod. Gear transmission structures are provided on both sides of the connecting plate (19). The gear transmission structures are symmetrically arranged with respect to the center of the telescopic rod.

9. The portable Bluetooth smart speaker equipped with DIA sound enhancement technology according to claim 8, characterized in that: The telescopic rod includes a movable rod (24), a fixed rod (25) and a third spring (26). The bottom of the movable rod (24) is movably connected to the inside of the fixed rod (25) through the third spring (26). The limiting member is located inside the top of the movable rod (24). The bottom of the fixed rod (25) is fixedly connected to the housing (1).

10. The portable Bluetooth smart speaker equipped with DIA sound enhancement technology according to claim 9, characterized in that: The second sound outlet cover (8) has an annular groove in the middle, and a rotating disk (28) is rotatably connected in the annular groove. The rotating disk (28) has a sound outlet hole (9) with the same diameter as the second sound outlet cover (8). The rotating disk (28) is fixedly connected to a push block (29). The top of the second sound outlet cover (8) has an arc-shaped groove. The push block (29) extends through the arc-shaped groove to the top of the second sound outlet cover (8). The push block (29) is magnetically connected to the inner wall of the arc-shaped groove through a second magnetic block.

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