Multifunctional combined sound equipment

Abstract

The invention discloses a multifunctional combined sound box, and relates to the technical field of sound boxes. A dustproof net and a grating plate are mounted on a rotatable drum, so that when the sound box is not used, the dustproof net can be automatically rotated to the front of a sound production unit to block pollutants, and when the sound box is used, the grating plate can be automatically rotated to the front of the sound production unit to block pollutants; the grating plates can be automatically switched for collision protection, the problem that sound quality is affected due to electrostatic adsorption of pollutants by the sounding unit is effectively avoided, meanwhile, the servo motor drives the lead screw mechanism to accurately control the second inner shell to ascend and descend, the volume of the internal acoustic cavity is changed, diversified sound listening requirements can be met, and the sound quality is improved. And in the volume adjusting process of the acoustic cavity, a brush can be driven to clean the stored dustproof net, and the stability of long-acting dust prevention and noise reduction of the sound box can be effectively guaranteed under mutual cooperation.

Description

Technical Field

[0001] This invention relates to the field of audio technology, and more particularly to a multifunctional combination audio system. Background Technology

[0002] During the normal use cycle of audio equipment, there is a large amount of non-working time. When the audio equipment is powered off, the internal sound unit will naturally accumulate static charge due to material properties and environmental factors. This electrostatic effect will attract fine dust, pet hair, textile fibers and other impurities floating in the surrounding air. Over time, the pollutants will continue to accumulate on the diaphragm surface of the sound unit, causing the loss of high-frequency details and affecting the sound quality.

[0003] To address the aforementioned dust accumulation problem, the conventional approach in this field is to install a fine dustproof mesh in front of the speaker unit. This physically intercepts most of the hair and dust, providing good passive protection for the speaker unit. While this method is simple and direct, the dense mesh can obstruct the outward transmission of sound waves. In particular, it can cause significant attenuation and diffraction effects on the high-frequency components that determine the clarity and spatiality of the sound, resulting in a muffled and unclear final output sound with limited high-frequency extension. This severely sacrifices the high-fidelity sound quality of the audio system. Furthermore, the fixed structure of the dense mesh is more prone to clogging due to dust accumulation. If it is not cleaned frequently, its negative acoustic effects will be further aggravated.

[0004] Therefore, a multi-functional combined audio system is proposed to solve some of the problems existing in the above-mentioned prior art. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that the sound unit of the existing combination audio system is easily affected by dust and lint during use, which affects its high-fidelity sound quality. Therefore, a multi-functional combination audio system is proposed.

[0006] To address the problems existing in the prior art, the present invention adopts the following technical solution: A multifunctional modular audio system includes a housing, a first inner housing coaxially mounted inside the housing, a sound unit fixedly mounted on the outer wall of the first inner housing, the back of the sound unit located inside the first inner housing, the front of the sound unit located outside the first inner housing, a sound outlet corresponding to the sound unit opening on the outer wall of the housing, a rotating cylinder rotatably mounted inside the housing and located outside the first inner housing, a dustproof mesh and a grille fixedly mounted on the cylindrical surface of the rotating cylinder, a servo motor for driving the rotation of the rotating cylinder fixedly mounted inside the housing, a U-shaped frame located outside the first inner housing rotatably mounted on the inner side of the rotating cylinder, the U-shaped frame being offset from the sound unit, a brush fixedly covered on the side of the U-shaped frame near the rotating cylinder, a second inner housing slidably inserted into the upper end of the first inner housing, a screw mechanism for controlling the lifting and lowering adjustment of the second inner housing mounted on the inner side of the first inner housing, a servo motor for driving the screw mechanism fixedly mounted inside the housing, and a transmission mechanism between the drive shaft of the servo motor and the U-shaped frame.

[0007] Preferably, there are two sound-producing units, two sound holes, two dustproof nets, two grid plates and two brushes. The two sound-producing units are fixedly installed on the outer end wall of the first inner shell in a central axis symmetrical manner. The two dustproof nets and grid plates are evenly distributed around the cylindrical surface of the rotating cylinder, and the dustproof nets and grid plates are arranged alternately.

[0008] Preferably, a first gear is fixedly installed at the bottom axis of the rotating drum, and a second gear is fixedly installed on the drive shaft of the servo motor. The second gear meshes with the first gear for transmission. The servo motor rotates 180° in a single rotation, and the transmission ratio between the second gear and the first gear is set to 1:2.

[0009] Preferably, both the first inner shell and the second inner shell are cylindrical structures, with the second inner shell inserted upside down into the upper part of the first inner shell, and the outer dimensions of the second inner shell matching the inner dimensions of the first inner shell.

[0010] Preferably, reinforcing ribs are fixedly embedded in the end walls of both the first inner shell and the second inner shell, and the reinforcing ribs are evenly distributed in a grid-like structure.

[0011] Preferably, the lead screw mechanism includes a lead screw that is vertically rotatably installed at the central axis position inside the first inner shell, a connecting plate that is fixedly installed at the lower end position inside the second inner shell, and a threaded sleeve that is fixedly installed on the connecting plate. The threaded sleeve is threadedly connected to the lead screw, and the lower end of the lead screw is fixedly connected to the drive shaft of the servo motor.

[0012] Preferably, a vertically arranged sound-absorbing rod is fixedly installed inside the first inner shell, and the sound-absorbing rod is slidably inserted into the connecting plate. The sound-absorbing rod is configured with a porous honeycomb structure.

[0013] Preferably, the lower end of the U-shaped frame is rotatably sleeved on the outer side of the lower end of the first inner shell, and the servo motor drives the U-shaped frame to rotate clockwise and counterclockwise through the transmission mechanism.

[0014] Preferably, the transmission mechanism includes a sector gear fixedly mounted on the drive shaft of a servo motor, a first internal gear ring rotatably mounted on the bottom of the first inner shell and sleeved on the outside of the sector gear, and the central axes of the first internal gear ring and the sector gear do not coincide, the first internal gear ring meshes with the sector gear for transmission, a third gear rotatably mounted on the bottom of the first inner shell and disposed on the outside of the sector gear, the third gear being disposed below the first internal gear ring, the third gear meshing with the sector gear for transmission, a second internal gear ring coaxially mounted on the bottom of the U-shaped frame, a fourth gear meshing with the second internal gear ring rotatably mounted on the bottom of the first inner shell, a first belt drive assembly drivingly connecting the first internal gear ring and the fourth gear, and a second belt drive assembly drivingly connecting the third gear and the fourth gear.

[0015] Preferably, the inner diameter of the first internal gear ring is the same as the outer diameter of the third gear, and the number of teeth on the inner side of the first internal gear ring is the same as the number of teeth on the outer side of the third gear.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, by installing the dustproof net and the grille plate on a rotatable drum, when the speaker is not in use, the dustproof net can be automatically rotated to the front of the sound unit to block contaminants. When the speaker is in use, the grille plate can be automatically switched for collision protection, effectively avoiding the problem of the sound unit being affected by the static electricity adsorbing contaminants and affecting the sound quality. At the same time, the second inner shell is precisely controlled to rise and fall by the servo motor driving the screw mechanism, changing the internal acoustic cavity volume, which can meet diverse listening needs. During the acoustic cavity volume adjustment process, the brush can be driven to clean the stored dustproof net. With the cooperation of these factors, the long-term dustproof and noise reduction stability of the speaker can be effectively guaranteed. 2. In this invention, by setting the transmission mechanism between the drive shaft of the servo motor and the U-shaped frame, and by intermittently meshing with the first internal gear ring and the third gear during the rotation of the sector gear, the drive shaft of the servo motor can drive the U-shaped frame to rotate back and forth during reciprocating rotation, and can also drive the U-shaped frame to rotate back and forth during unidirectional rotation. This facilitates more flexible and efficient brushing and cleaning of the dustproof net, and helps to further ensure the long-term stability of the device in preventing dust, lint and other pollutants from accumulating on the sound unit under electrostatic adsorption. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a front sectional view of the present invention; Figure 2This is a perspective view of the present invention; Figure 3 This is a right sectional view of the present invention; Figure 4 This is a perspective view of the dustproof net and grating plate of the present invention; Figure 5 This is a split view of the first inner shell and the second inner shell of the present invention; Figure 6 This is a perspective view of the lead screw mechanism and transmission mechanism of the present invention from above; Figure 7 This is a perspective view of the lead screw mechanism and transmission mechanism of the present invention from a lower angle; Figure 8 This is a front view of the present invention; Figure 9 For the present invention Figure 8 Sectional view at point AA; Figure 10 For the present invention Figure 8 Sectional view at point BB.

[0018] In the picture: 1. Outer shell; 11. First inner shell; 12. Sound unit; 13. Sound outlet; 2. Rotary drum; 21. Dustproof net; 22. Grating plate; 23. Servo motor; 24. First gear; 25. Second gear; 26. U-shaped frame; 27. Brush; 3. Second inner shell; 4. Lead screw; 41. Connecting plate; 42. Screw sleeve; 43. Sound-absorbing rod; 5. Servo motor; 6. Sector gear; 61. First internal gear ring; 62. Third gear; 63. Second internal gear ring; 64. Fourth gear; 65. First belt drive assembly; 66. Second belt drive assembly. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Example: This example provides a multi-functional combined audio system. See [link / reference]. Figure 1 - Figure 10Specifically, the device includes an outer shell 1, inside which a first inner shell 11 is fixedly installed and coaxially arranged. A sound unit 12 is fixedly installed on the outer wall of the first inner shell 11. The back of the sound unit 12 is located inside the first inner shell 11, and the front of the sound unit 12 is located outside the first inner shell 11. A sound outlet 13 corresponding to the sound unit 12 is opened on the outer wall of the outer shell 1. A rotating cylinder 2 located outside the first inner shell 11 is rotatably installed inside the outer shell 1. A dustproof net 21 and a grid plate 22 are fixedly installed on the cylindrical surface of the rotating cylinder 2. A servo motor 23 for driving the rotating cylinder 2 to rotate is fixedly installed inside the outer shell 1. A U-shaped frame 26 located outside the first inner shell 11 is rotatably installed on the inner side of the rotating cylinder 2. The U-shaped frame 26 is offset from the sound unit 12. A brush 27 is fixedly covered on the side of the U-shaped frame 26 near the rotating cylinder 2.

[0021] Two sound-producing units 12, two sound holes 13, two dustproof nets 21, two grid plates 22 and two brushes 27 are provided. The two sound-producing units 12 are fixedly installed on the outer end wall of the first inner shell 11 in a central axis symmetrical arrangement. The two dustproof nets 21 and grid plates 22 are evenly distributed around the cylindrical surface of the rotating drum 2. The dustproof nets 21 and grid plates 22 are staggered. The first gear 24 is fixedly installed at the bottom axis position of the rotating drum 2. The second gear 25 is fixedly installed on the drive shaft of the servo motor 23. The second gear 25 meshes with the first gear 24 for transmission. The single rotation amplitude of the servo motor 23 is 180°. The transmission ratio between the second gear 25 and the first gear 24 is set to 1:2.

[0022] During use, the servo motor 23 can drive the rotating drum 2 to rotate inside the housing 1. By controlling the rotation angle of the rotating drum 2, the dustproof mesh 21 or the grille 22 can be inserted between the sound unit 12 and the sound outlet 13. The speaker has two sound units 12, and the two sound units are symmetrically arranged on their central axes. This makes the sound quality more three-dimensional and helps to provide users with high-quality sound playback.

[0023] In this speaker, the first gear 24 is fixedly installed at the bottom axis of the rotating drum 2. The second gear 25 on the drive shaft is driven by the servo motor 23 to mesh with the first gear 24. The servo motor 23 can achieve precise drive of the rotating drum 2. The transmission ratio between the second gear 25 and the first gear 24 is set to 1:2. With the help of the servo motor 23, it can rotate from 0 to 180°, so that the rotating drum 2 can rotate squarely within the range of 0 to 90°. This meets the switching requirements of the two dustproof nets 21 and the two grid plates 22 on the rotating drum 2, which helps to ensure that the next functional surface, dustproof net 21 or grid plate 22 is accurately delivered to the working position between the sound unit 12 and the sound outlet 13 with each action.

[0024] When the speaker is turned on, its internal control system controls the servo motor 23 to drive the rotating drum 2 to rotate 90° clockwise, switching the grille plate 22 between the sound unit 12 and the sound outlet 13. Because the grille plate 22 has a high opening ratio and a strong rigid structure, it can provide physical protection for the sound unit 12 and its fragile diaphragm, preventing accidental damage to the sound unit 12. At the same time, due to the structural design of the large holes in the grille plate 22, its obstruction and diffraction effect on sound waves is relatively weak. Therefore, it will not have an adverse effect on the timbre produced by the sound unit 12 during operation, thus maximizing the preservation of sound details, transparency and high-frequency extension, achieving a perfect unity of protection and sound quality.

[0025] When the speaker is not in use, its internal control system will drive the rotating drum 2 to rotate 90° counterclockwise in advance, so that the dustproof net 21 and the grille plate 22 will be swapped. The dustproof net 21 will be precisely rotated between the sound unit 12 and the sound outlet 13. With the dense mesh structure of the dustproof net 21, most of the dust and lint in the external environment can be effectively blocked from adhering to the sound unit 12. This directly solves the problem that the sound unit 12 is affected by a large number of pollutants due to static electricity, which leads to adverse effects on the tone and sound quality. The speaker is equipped with a small battery, which can provide power to the servo motor 23 when the speaker is unexpectedly powered off. This can effectively ensure that the dustproof net 21 is stably switched between the sound unit 12 and the sound outlet 13 when the speaker is not in use.

[0026] When the speaker is running, the dustproof mesh 21 moves in and out, causing relative movement between the dustproof mesh 21 and the brush 27 on the U-shaped frame 26. During this process, the relative movement between the two drives the brush 27 to wipe and clean the U-shaped frame 26, which can prevent the dustproof mesh 21 from accumulating excessive dust and lint during long-term use, and prevent its function of preventing dust and lint from adhering to the sound unit 12 from being affected, thus helping to ensure the stability of the speaker during long-term use.

[0027] When not in use, the speaker uses a dustproof mesh 21 to shield the speaker unit 12 from dust, ensuring normal airflow inside and outside the speaker and maintaining the pressure balance and micro-circulation of the air inside and outside the casing 1. This prevents moisture inside the enclosure from being trapped in a humid environment, thus effectively preventing a series of irreversible physical damages such as mold growth on the diaphragm of the speaker unit 12, oxidation of the magnetic circuit system, and moisture absorption of the internal circuit board.

[0028] In the specific implementation process, such as Figure 1 and Figure 3As shown, a second inner shell 3 is slidably inserted into the upper end of the first inner shell 11. A screw mechanism for controlling the lifting and lowering adjustment of the second inner shell 3 is installed on the inner side of the first inner shell 11. A servo motor 5 for driving the screw mechanism is fixedly installed inside the outer shell 1. The screw mechanism includes a screw 4 that is vertically rotatably installed at the central axis position inside the first inner shell 11. A connecting plate 41 is fixedly installed at the lower end of the second inner shell 3, and a threaded sleeve 42 is fixedly installed on the connecting plate 41. The threaded sleeve 42 is threadedly connected to the screw 4, and the lower end of the screw 4 is fixedly connected to the drive shaft of the servo motor 5.

[0029] During the use of this speaker, after the servo motor 5 is powered on and started, it can drive the lead screw 4, which is fixedly connected to its drive shaft, to rotate. Through the threaded connection between the lead screw 4 and the screw sleeve 42, the screw sleeve 42 can be driven to adjust the height on the lead screw 4. Through the connection of the connecting plate 41, the second inner shell 3 can be driven to adjust the height inside the upper end of the first inner shell 11. By controlling the rotation direction of the drive shaft of the servo motor 5, the rotation direction of the lead screw 4 can be controlled, thereby controlling the lifting direction of the second inner shell 3. The operation is flexible and convenient.

[0030] In this speaker, the precise control of the lead screw mechanism allows for the accurate raising and lowering of the second inner shell 3 relative to the first inner shell 11. This enables continuous adjustment of the acoustic cavity volume formed by the first inner shell 11 and the second inner shell 3. Users can flexibly adjust the acoustic characteristics of the speaker by changing the acoustic cavity volume according to music genre or personal preference. Raising the second inner shell 3 increases the acoustic cavity volume, resulting in deeper, more expansive bass; lowering the second inner shell 3 decreases the acoustic cavity volume, resulting in tighter, more resonant bass. This allows the speaker to meet diverse listening needs.

[0031] In the specific implementation process, such as Figure 1 , Figure 3 and Figure 5 As shown, both the first inner shell 11 and the second inner shell 3 are cylindrical structures. The second inner shell 3 is inserted upside down into the upper end of the first inner shell 11. The outer dimensions of the second inner shell 3 are adapted to the inner dimensions of the first inner shell 11. Reinforcing ribs are fixedly embedded in the end walls of both the first inner shell 11 and the second inner shell 3. The reinforcing ribs are evenly distributed in a grid structure.

[0032] During use, by setting both the first inner shell 11 and the second inner shell 3 as cylindrical structures, the acoustic cavity formed by the first inner shell 11 and the second inner shell 3 presents a closed cylindrical structure. Due to the influence of the internal curved surface structure of the cylindrical acoustic cavity, sound waves will form diffuse reflection in the acoustic cavity, which can avoid the sound waves from reflecting back and forth in a regular manner in the acoustic cavity. This can greatly reduce the intensity of standing waves, make the frequency response flatter, and thus make the sound more natural and pure, improving the quality of the sound quality of the speaker.

[0033] In addition, by setting the first inner shell 11 and the second inner shell 3 as a cylindrical structure, the high rigidity of the curved surface structure, combined with the reinforcement of the reinforcing ribs distributed in the grid structure inside the end wall, can effectively resist the deformation caused by the internal sound pressure. This effectively reduces the amplitude of the vibration of the first inner shell 11 and the second inner shell 3 during the use of the speaker, which helps to reduce the sound coloration to a certain extent. Furthermore, the smooth and continuous curved surface structure allows the internal sound waves to spread out gently and evenly, which helps to generate a wider sound field and thus effectively improves the playback effect of the speaker.

[0034] In the specific implementation process, such as Figure 1 , Figure 3 and Figure 6 - Figure 7 As shown, a vertically arranged sound-absorbing rod 43 is fixedly installed inside the first inner shell 11, and the sound-absorbing rod 43 is slidably inserted into the connecting plate 41. The sound-absorbing rod 43 is designed with a porous honeycomb structure. During the use of this speaker, the sound-absorbing rod 43 can be made of porous honeycomb materials such as porous ceramics or high-density foam. The porous honeycomb structure of the sound-absorbing rod 43 can be regarded as a broadband sound absorber in the first inner shell 11, which can effectively absorb the standing waves in the first inner shell 11, especially the stray reflections in the mid-to-high frequency range. When playing human voices, it can be clearer. Furthermore, by sliding the vertically arranged sound-absorbing rod 43 into the connecting plate 41, it can provide reliable radial rotation restriction and axial lifting guidance for the lifting and lowering of the second inner shell 3. This helps to prevent the second inner shell 3 from shaking and deflecting when adjusting the lifting and lowering relative to the first inner shell 11, thus ensuring the stability of the speaker in actual use to a certain extent.

[0035] In the specific implementation process, such as Figure 1 , Figure 3 , Figure 6 - Figure 7 and Figure 10As shown, the lower end of the U-shaped frame 26 is rotatably sleeved on the outer side of the lower end of the first inner shell 11. A transmission mechanism is provided between the U-shaped frame 26 and the drive shaft of the servo motor 5. The servo motor 5 drives the U-shaped frame 26 to rotate clockwise and counterclockwise through the transmission mechanism. During the use of this speaker, when the servo motor 5 drives the lead screw mechanism to control the lifting and lowering adjustment of the second inner shell 3, the transmission mechanism can drive the U-shaped frame 26 to rotate and swing clockwise and counterclockwise in a small amplitude. This causes the brush 27 fixedly covered on it to perform fine wiping of the dustproof net 21 stored inside the outer shell 1, effectively improving the cleaning effect of the dustproof net 21. A partition is provided between the U-shaped frame 26 and the sound unit 12. The dust and lint cleaned off the dustproof net 21 will not spread to the sound unit 12 due to the barrier of the partition, and will eventually be deposited at the bottom of the rotating drum 2, which is convenient for staff to clean regularly.

[0036] The transmission mechanism includes a sector gear 6 fixedly mounted on the drive shaft of the servo motor 5. A first internal gear ring 61 is rotatably mounted on the bottom of the first inner shell 11, sleeved on the outside of the sector gear 6, and the central axes of the first internal gear ring 61 and the sector gear 6 do not coincide. The first internal gear ring 61 meshes with the sector gear 6 for transmission. A third gear 62 is rotatably mounted on the bottom of the first inner shell 11, located on the outside of the sector gear 6, and positioned below the first internal gear ring 61. The third gear 62 meshes with the sector gear 6 for transmission. A second internal gear ring 63 is fixedly installed at the bottom of the frame 26 and is coaxially arranged therewith. A fourth gear 64 that meshes with the second internal gear ring 63 is rotatably installed at the bottom of the first inner shell 11. A first belt drive assembly 65 is connected between the first internal gear ring 61 and the fourth gear 64. A second belt drive assembly 66 is connected between the third gear 62 and the fourth gear 64. The inner diameter of the first internal gear ring 61 is the same as the outer diameter of the third gear 62. The number of teeth on the inner side of the first internal gear ring 61 is the same as the number of teeth on the outer side of the third gear 62.

[0037] During the use of this speaker, when the servo motor 5 drives the lead screw mechanism to adjust the lifting and lowering of the second inner shell 3, it will drive the sector gear 6 to rotate synchronously. During the rotation, the sector gear 6 will mesh with the first internal gear ring 61 or with the third gear 62. Since the number of teeth set at the edge of the sector gear 6 is small, the sector gear 6 will only maintain a meshing state with one of the first internal gear ring 61 and the third gear 62 at the same time.

[0038] Since the sector gear 6 meshes inside the first internal gear ring 61, when the sector gear 6 rotates and remains meshed with the first internal gear ring 61, the first internal gear ring 61 is driven to rotate in the same direction as the sector gear 6. Since the sector gear 6 meshes outside the third gear 62, when the sector gear 6 rotates and remains meshed with the third gear 62, the third gear 62 is driven to rotate in the opposite direction to the sector gear 6.

[0039] When the sector gear 6 is driven to rotate unidirectionally by the servo motor 5, it can intermittently mesh with the first internal gear ring 61 or with the third gear 62. In this transmission state, the transmission connection between the first internal gear ring 61 and the fourth gear 64 is achieved through the first belt drive assembly 65, and the transmission connection between the third gear 62 and the fourth gear 64 is achieved through the second belt drive assembly 66. In conjunction with the meshing transmission between the fourth gear 64 and the second internal gear ring 63, the drive shaft of the servo motor can drive the U-shaped frame 26 to drive the brush 27 to rotate back and forth when rotating in one direction. When rotating back and forth, the U-shaped frame 26 can also drive the brush 27 to rotate back and forth, which facilitates more flexible brushing and cleaning of the dustproof net 21.

[0040] Specifically, the working principle of this invention is as follows: Standby dustproof mode: When the audio system is powered off, the servo motor 23 drives the rotating drum 2 to rotate 90°, switching the dustproof net 21 between the sound unit 12 and the sound outlet 13. At this time, the dense structure of the dustproof net 21 intercepts dust and lint, reducing the probability of dust and lint accumulating on the sound unit 12 when the audio system is not in use. Working playback mode: When the audio system is started, the servo motor 23 drives the rotating drum 2 to rotate 90° in the opposite direction, switching the grille plate 22 between the sound unit 12 and the sound outlet 13 to protect the sound unit 12 from collision. During the operation of the sound unit 12, the user can control the servo motor 5 to start according to preference, drive the lead screw 4 to rotate according to the preset value, raise the second inner shell 3 to the target height, and change the playback effect by adjusting the volume of the acoustic cavity. During this process, the transmission mechanism drives the U-shaped frame 26 to drive the brush 27 to swing back and forth at a small angle to achieve fine cleaning of the dustproof net 21.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-functional combination audio system, comprising a housing (1), characterized in that: The outer shell (1) is fixedly installed with a first inner shell (11), and a sound-emitting unit (12) is fixedly installed on the outer end wall of the first inner shell (11). The outer end wall of the outer shell (1) is provided with a sound outlet (13) corresponding to the sound-emitting unit (12). A rotating cylinder (2) is rotatably installed inside the outer shell (1) and disposed outside the first inner shell (11). A dustproof net (21) and a grid plate (22) are fixedly installed on the cylindrical surface of the rotating cylinder (2). A servo motor (23) for driving the rotating cylinder (2) to rotate is fixedly installed inside the outer shell (1). The inner side of the rotating cylinder (2) is rotatably installed with a dustproof net (21) and a grid plate (22). A U-shaped frame (26) is installed on the outside of the first inner shell (11), and the U-shaped frame (26) is offset from the sound unit (12). A brush (27) is fixedly covered on the side of the U-shaped frame (2) near the rotating cylinder (2). A second inner shell (3) is slidably inserted into the upper end of the first inner shell (11). A screw mechanism for controlling the lifting and lowering adjustment of the second inner shell (3) is installed on the inner side of the first inner shell (11). A servo motor (5) for driving the screw mechanism is fixedly installed inside the outer shell (1), and a transmission mechanism is provided between the drive shaft of the servo motor (5) and the U-shaped frame (26).

2. The multifunctional combination audio system according to claim 1, characterized in that: Two of each of the sound-producing unit (12), sound outlet (13), dustproof net (21), grid plate (22) and brush (27) are provided. The two sound-producing units (12) are fixedly installed on the outer end wall of the first inner shell (11) in a central axis symmetrical manner. The two dustproof nets (21) and grid plates (22) are evenly distributed around the cylindrical surface of the rotating cylinder (2). The dustproof nets (21) and grid plates (22) are staggered.

3. A multi-functional combined audio system according to claim 1, characterized in that: A first gear (24) is fixedly installed at the bottom axis of the rotating drum (2), and a second gear (25) is fixedly installed on the drive shaft of the servo motor (23). The second gear (25) meshes with the first gear (24) for transmission. The servo motor (23) rotates 180° in a single rotation. The transmission ratio between the second gear (25) and the first gear (24) is set to 1:

2.

4. A multi-functional combined audio system according to claim 1, characterized in that: The first inner shell (11) and the second inner shell (3) are both cylindrical structures. The second inner shell (3) is inserted upside down into the upper end of the first inner shell (11). The outer dimensions of the second inner shell (3) are adapted to the inner dimensions of the first inner shell (11).

5. A multi-functional combined audio system according to claim 4, characterized in that: The end walls of the first inner shell (11) and the second inner shell (3) are both fixedly inlaid with reinforcing ribs, which are evenly distributed in a grid structure.

6. A multi-functional combined audio system according to claim 4, characterized in that: The lead screw mechanism includes a lead screw (4) that is vertically rotatably installed at the central axis position inside the first inner shell (11), a connecting plate (41) that is fixedly installed at the lower end position inside the second inner shell (3), and a threaded sleeve (42) that is fixedly installed on the connecting plate (41). The threaded sleeve (42) is threadedly connected to the lead screw (4), and the lower end of the lead screw (4) is fixedly connected to the drive shaft of the servo motor (5).

7. A multi-functional combined audio system according to claim 6, characterized in that: A vertically arranged sound-absorbing rod (43) is fixedly installed inside the first inner shell (11), and the sound-absorbing rod (43) is slidably inserted into the connecting plate (41). The sound-absorbing rod (43) is configured as a porous honeycomb structure.

8. A multi-functional combined audio system according to claim 1, characterized in that: The lower end of the U-shaped frame (26) is rotatably sleeved on the outer side of the lower end of the first inner shell (11), and the servo motor (5) drives the U-shaped frame (26) to rotate clockwise and counterclockwise through the transmission mechanism.

9. A multi-functional combined audio system according to claim 8, characterized in that: The transmission mechanism includes a sector gear (6) fixedly mounted on the drive shaft of a servo motor (5). A first internal gear ring (61) is rotatably mounted on the bottom of the first inner shell (11) and sleeved on the outside of the sector gear (6). The central axes of the first internal gear ring (61) and the sector gear (6) do not coincide. The first internal gear ring (61) meshes with the sector gear (6) for transmission. A third gear (62) is rotatably mounted on the bottom of the first inner shell (11) and disposed on the outside of the sector gear (6). The third gear (62) is disposed on the first internal gear ring. Below (61), the third gear (62) meshes with the sector gear (6) for transmission. The bottom of the U-shaped frame (26) is fixedly installed with a second internal gear ring (63) coaxially arranged with it. The bottom of the first inner shell (11) is rotatably installed with a fourth gear (64) meshing with the second internal gear ring (63). A first belt drive assembly (65) is connected between the first internal gear ring (61) and the fourth gear (64). A second belt drive assembly (66) is connected between the third gear (62) and the fourth gear (64).

10. A multifunctional combination audio system according to claim 9, characterized in that: The inner diameter of the first internal gear ring (61) is the same as the outer diameter of the third gear (62), and the number of teeth on the inner side of the first internal gear ring (61) is the same as the number of teeth on the outer side of the third gear (62).

Images