Multifunctional combined sound equipment

Abstract

The application discloses a multifunctional combined sound equipment, and relates to the technical field of sound equipment. The dustproof net and the grid plate are installed on the rotating drum which can rotate. When the sound equipment is not used, the dustproof net can be automatically rotated to the front of the sound unit to block pollutants. When the sound equipment is used, the grid plate can be automatically switched to collide and protect, effectively avoiding the problem that the sound quality is affected due to the static adsorption of pollutants on the sound unit. Meanwhile, the second inner shell is accurately controlled to rise and fall through the servo motor driving screw rod mechanism, the internal acoustic cavity volume is changed, diversified listening requirements can be met, and the dustproof net stored can be cleaned by the brush during the acoustic cavity volume adjusting process. Through the cooperation, the stability of the long-acting dustproof and noise reduction of the sound equipment can be effectively ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sound technology, and particularly relates to a multifunctional combined sound. BACKGROUND

[0002] In the conventional use cycle of the sound equipment, there is a large amount of non-working time, when the sound is in the power-off off state, the internal sound unit will naturally accumulate static electricity due to material characteristics and environmental factors, this static effect will adsorb the fine dust, pet hair, textile fibers and other impurities floating in the surrounding air, with the passage of time, pollutants will continue to accumulate on the diaphragm surface of the sound unit, resulting in loss of high frequency details of the sound unit, affecting the sound quality.

[0003] To solve the above dust accumulation problem, the conventional technical means in the field is to install a layer of fine dust screen cover in front of the sound unit, which intercepts most of the hair and dust on the physical level, and provides good passive protection for the sound unit, this method is simple and direct, but the dense mesh will cause obstruction to the transmission of sound waves outward, especially the high frequency part which determines the sound clarity and spatial sense will also cause significant attenuation and diffraction effect, resulting in the final output sound being dull and not transparent, the high frequency extension is limited, which seriously sacrifices the high fidelity sound quality of the sound, in addition, the fixed structure of the mesh screen cover is also more likely to be blocked by dust itself, if not cleaned frequently, the acoustic negative effect will be further intensified.

[0004] Therefore, a multifunctional combined sound is proposed to solve some problems existing in the prior art. SUMMARY

[0005] The purpose of the present application is to solve the problem that the combined sound in the prior art is easily disturbed by dust and hair during use, which affects the high fidelity sound quality, and a multifunctional combined sound is proposed.

[0006] In order to solve the problems existing in the prior art, the present application adopts the following technical scheme:

[0007] The utility model provides a multifunctional combined sound, including the shell, the inside fixed mounting of shell with coaxial first inner shell is arranged with it, and the outer end wall of first inner shell is fixedly installed with the sound unit, the back of sound unit is arranged in the inside of first inner shell, the front of sound unit is arranged outside first inner shell, the outer end wall of shell is opened with the sound hole corresponding with sound unit is arranged, the rotating installation of shell in the outside of first inner shell is set up with the rotating drum, and the cylindrical surface of rotating drum is fixedly installed with the dust screen and the grid plate, the rudder of shell is fixedly installed with the rotating drum is used for driving the rotation of screw rod mechanism, the rotating installation of rotating drum is located in the outside of first inner shell with the U-shaped frame, and the U-shaped frame is set with the sound unit staggered, the side of U-shaped frame is fixedly covered with the brush close to rotating drum, the upper end of first inner shell is slidably inserted with the second inner shell, the inside of first inner shell is installed with the screw rod mechanism for the control of second inner shell lift adjustment, the servo motor of fixed installation in the shell is used for driving the screw rod mechanism, and the transmission mechanism is arranged between the drive shaft of servo motor and U-shaped frame.

[0008] Preferably, the sound unit, sound hole, dust screen, grid plate and brush are provided with two, two sound units are fixedly installed on the outer end wall of the first inner shell in a central axis symmetry, two dust screens and grid plates are evenly distributed on the cylindrical surface of the rotating drum, and the dust screens and grid plates are staggered.

[0009] Preferably, the bottom axis of the rotating drum is fixedly installed with a first gear, the drive shaft of the rudder is fixedly installed with a second gear, and the second gear is engaged with the first gear. The amplitude of single rotation of the rudder is 180°, and the transmission ratio between the second gear and the first gear is 1:2.

[0010] Preferably, the first inner shell and the second inner shell are provided as cylindrical structures, the second inner shell is inserted into the upper end of the first inner shell, and the outside dimension of the second inner shell is adapted to the inside dimension of the first inner shell.

[0011] Preferably, the end wall of the first inner shell and the second inner shell is fixedly embedded with a reinforcing rib, and the reinforcing rib is evenly distributed in a grid structure.

[0012] Preferably, the screw rod mechanism includes a screw rod vertically installed at the central axis of the first inner shell, a connecting plate fixedly installed at the lower end of the second inner shell, and a screw sleeve fixedly installed on the connecting plate. The screw sleeve is threadedly connected with the screw rod, and the lower end of the screw rod is fixedly connected with the drive shaft of the servo motor.

[0013] Preferably, a sound absorbing rod is fixedly installed in the first inner shell in a vertical manner, and the sound absorbing rod is slidably inserted into the connecting plate. The sound absorbing rod is provided in a porous honeycomb structure.

[0014] Preferably, the lower end of the U-shaped frame is rotatably sleeved to the outside of the lower end of the first inner shell, and the servo motor drives the U-shaped frame to rotate clockwise and counterclockwise reciprocally through the transmission mechanism.

[0015] Preferably, the transmission mechanism comprises a sector gear fixedly installed on the driving shaft of the servo motor, the bottom of the first inner shell is rotatably installed with a first inner ring gear sleeved outside the sector gear, and the central axes of the first inner ring gear and the sector gear do not coincide, the first inner ring gear is in meshing transmission with the sector gear, the bottom of the first inner shell is rotatably installed with a third gear arranged outside the sector gear, and the third gear is arranged below the first inner ring gear, the third gear is in meshing transmission with the sector gear, the bottom of the U-shaped frame is fixedly installed with a second inner ring gear coaxially arranged therewith, the bottom of the first inner shell is rotatably installed with a fourth gear in meshing transmission with the second inner ring gear, and the first inner ring gear and the fourth gear are in transmission connection through a first belt transmission assembly, and the third gear and the fourth gear are in transmission connection through a second belt transmission assembly.

[0016] Preferably, the inner diameter of the first inner ring gear is consistent with the outer diameter of the third gear, and the number of teeth on the inner side of the first inner ring gear is consistent with the number of teeth on the outer side of the third gear.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. In the present application, by installing the dustproof net and the grid plate on the rotatable rotating drum, the dustproof net can be automatically rotated in front of the sound unit for pollution blocking when the sound equipment is not used, and the grid plate can be automatically switched for collision protection when the sound equipment is used, effectively avoiding the problem that the sound quality of the sound unit is affected due to the static adsorption of pollutants, and at the same time, by precisely controlling the lifting of the second inner shell through the servo motor driven screw rod mechanism, the volume of the internal acoustic cavity can be changed to meet diversified listening needs, and the brush can clean the stored dustproof net during the volume adjustment of the acoustic cavity, so that the long-term dustproof and noise reduction stability of the sound equipment can be effectively guaranteed.

[0019] 2. In the present application, by arranging the transmission mechanism between the driving shaft of the servo motor and the U-shaped frame, and by intermittently meshing the first inner ring gear and the third gear during the rotation of the sector gear, the driving shaft of the servo motor can drive the U-shaped frame to rotate the brush reciprocally not only when rotating reciprocally, but also when rotating unidirectionally, so that the dustproof net can be brushed and cleaned more flexibly and efficiently, and the long-term stability of the device in preventing dust, lint and other pollutants from being accumulated on the sound unit due to static adsorption can be further guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application. In the drawings:

[0021] Figure 1is a front view of the present application;

[0022] Figure 2 is a perspective view of the present application;

[0023] Figure 3 is a right view of the present application;

[0024] Figure 4 is a perspective view of the dustproof net and the grid plate of the present application;

[0025] Figure 5 is an exploded view of the first inner shell and the second inner shell of the present application;

[0026] Figure 6 is a perspective view of the lead screw mechanism and the transmission mechanism from the top view;

[0027] Figure 7 is a perspective view of the lead screw mechanism and the transmission mechanism from the bottom view;

[0028] Figure 8 is a front view of the present application;

[0029] Figure 9 is a sectional view of the present application Figure 8 at A-A;

[0030] Figure 10 is a sectional view of the present application Figure 8 at B-B.

[0031] in the drawing:

[0032] 1, outer shell; 11, first inner shell; 12, sound unit; 13, sound hole;

[0033] 2, rotating drum; 21, dustproof net; 22, grid plate; 23, steering wheel; 24, first gear; 25, second gear; 26, U-shaped frame; 27, brush;

[0034] 3, second inner shell;

[0035] 4, lead screw; 41, connecting plate; 42, screw sleeve; 43, sound absorbing rod;

[0036] 5, servo motor;

[0037] 6, fan-shaped gear; 61, first inner ring gear; 62, third gear; 63, second inner ring gear; 64, fourth gear; 65, first belt transmission assembly; 66, second belt transmission assembly. DETAILED DESCRIPTION

[0038] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application.

[0039] Embodiments: The present embodiment provides a multifunctional combined sound, referring to Figure 1 Figure 10 Specifically, it comprises a shell 1, a first inner shell 11 coaxially arranged inside the shell 1, a sound emitting unit 12 fixedly installed on the outer end wall of the first inner shell 11, the back of the sound emitting unit 12 arranged inside the first inner shell 11, the front of the sound emitting unit 12 arranged outside the first inner shell 11, a sound hole 13 corresponding to the sound emitting unit 12 arranged on the outer end wall of the shell 1, a rotating drum 2 arranged outside the first inner shell 11 rotatably installed in the shell 1, and a dust screen 21 and a grating plate 22 fixedly installed on the cylindrical surface of the rotating drum 2, a rudder 23 fixedly installed in the shell 1 for driving the rotating drum 2 to rotate, a U-shaped frame 26 rotatably installed on the inner side of the rotating drum 2 outside the first inner shell 11, and the U-shaped frame 26 and the sound emitting unit 12 are arranged in a staggered manner, and the side of the U-shaped frame 26 close to the rotating drum 2 is fixedly covered with a brush 27.

[0040] The sound emitting unit 12, the sound hole 13, the dust screen 21, the grating plate 22 and the brush 27 are provided with two, two sound emitting units 12 are fixedly installed on the outer end wall of the first inner shell 11 in a central axis symmetrical manner, two dust screens 21 and grating plates 22 are evenly distributed on the cylindrical surface of the rotating drum 2, the dust screen 21 and the grating plate 22 are arranged in an alternating manner, the first gear 24 is fixedly installed at the bottom of the rotating drum 2, the second gear 25 is fixedly installed on the driving shaft of the rudder 23, and the second gear 25 is engaged with the first gear 24 for transmission, the amplitude of single rotation of the rudder 23 is 180°, and the transmission ratio between the second gear 25 and the first gear 24 is 1:2.

[0041] During use of the sound, the rotating drum 2 can be driven to rotate inside the shell 1 by the rudder 23, and the rotation angle of the rotating drum 2 is controlled to realize the operation of cutting the dust screen 21 or the grating plate 22 between the sound emitting unit 12 and the sound hole 13. The sound is provided with two sound emitting units 12, and the two sound emitting units are arranged in a central axis symmetrical manner, which makes the sound quality more three-dimensional when the sound is used, and is beneficial to provide high-quality sound quality for users.

[0042] ​The sound box, the first gear 24 is fixedly installed at the bottom of the shaft of the rotating drum 2, the second gear 25 on the driving shaft of the rudder 23 is engaged with the first gear 24, the precise driving of the rotating drum 2 can be realized through the rudder 23, the transmission ratio between the second gear 25 and the first gear 24 is set to 1:2, and the rudder 23 can be rotated by 0-180°, so that the rotating drum 2 can be rotated by 0-90°, which meets the switching requirements of the two dustproof nets 21 and the two grating plates 22 arranged alternately on the rotating drum 2, and is favorable for ensuring that the next functional surface, the dustproof net 21 or the grating plate 22, can be accurately sent to the working position between the sound unit 12 and the sound outlet 13.

[0043] When the sound box is started, the control system in the sound box controls the rudder 23 to drive the rotating drum 2 to rotate clockwise by 90°, so that the grating plate 22 is switched to between the sound unit 12 and the sound outlet 13. Since the grating plate 22 has a high opening rate and a strong rigid structure, the grating plate 22 can provide physical protection for the sound unit 12 and the fragile diaphragm in the sound unit 12, so as to prevent the sound unit 12 from being damaged due to accidental touch. At the same time, since the grating plate 22 has a large hole structure, the grating plate 22 has weak blocking and diffraction effects on sound waves, so as not to adversely affect the tone of the sound unit 12 during operation, thereby maximizing the retention of sound details, transparency and high frequency extension, and realizing the perfect unity of protection and sound quality.

[0044] When the sound box is not used, the control system in the sound box drives the rotating drum 2 to rotate counterclockwise by 90° in advance, so that the dustproof net 21 is accurately rotated to between the sound unit 12 and the sound outlet 13. By means of the dense mesh structure of the dustproof net 21, most of the dust and lint in the external environment can be effectively prevented from adhering to the sound unit 12, thereby directly solving the problem that the tone and sound quality of the sound unit 12 are adversely affected due to the electrostatic adsorption of a large amount of pollutants. The sound box is provided with a small storage battery, which can supply power to the rudder 23 when the sound box is accidentally powered off, so as to effectively ensure that the dustproof net 21 is stably switched to between the sound unit 12 and the sound outlet 13 when the sound box is not used.

[0045] When the sound box is running, the dustproof net 21 moves in and out, so that the dustproof net 21 moves relative to the brush 27 on the U-shaped frame 26. During the relative movement, the brush 27 can be driven to wipe and clean the U-shaped frame 26, so as to avoid that the dustproof net 21 accumulates excessive dust and lint during long-term use, and avoid that the function of preventing dust and lint from adhering to the sound unit 12 is affected, thereby being favorable for ensuring the stability of the sound box during long-term use.

[0046] The sound box is dustproofed by the dustproof net 21 when not in use, which can ensure the normal circulation of air flow inside and outside the sound box, maintain the balance of the pressure inside and outside the shell 1 and the microcirculation of air, avoid the situation that the moisture in the box cannot escape in a humid environment, and effectively avoid the irreversible physical damage such as mold of the diaphragm of the sound unit 12, oxidation of the magnetic circuit system, and dampening of the internal circuit board of the sound box.

[0047] In the specific implementation process, as shown in Figure 1 and Figure 3 , the upper end of the first inner shell 11 is slidingly inserted with the second inner shell 3, the inner side of the first inner shell 11 is provided with a lead screw mechanism for controlling the lifting adjustment of the second inner shell 3, and the shell 1 is fixedly provided with a servo motor 5 for driving the lead screw mechanism. The lead screw mechanism includes a lead screw 4 vertically rotatably installed at the central axis position of the first inner shell 11, a connecting plate 41 is fixedly installed at the lower end position of the second inner shell 3, and a screw sleeve 42 is fixedly installed on the connecting plate 41. The screw sleeve 42 is threadedly connected with the lead screw 4, and the lower end of the lead screw 4 is fixedly connected with the driving shaft of the servo motor 5.

[0048] During use of the sound box, the servo motor 5 is powered on and starts to rotate the lead screw 4 fixedly connected with the driving shaft thereof. By virtue of the threaded connection between the lead screw 4 and the screw sleeve 42, the screw sleeve 42 is driven to adjust the lifting on the lead screw 4. By virtue of the connection of the connecting plate 41, the second inner shell 3 is driven to adjust the lifting inside the upper end of the first inner shell 11. By controlling the rotation direction of the driving shaft of the servo motor 5, the rotation direction of the lead screw 4 is controlled, and then the lifting direction of the second inner shell 3 is controlled. The operation is flexible and convenient.

[0049] In the sound box, the precise control of the lead screw mechanism can realize the precise lifting of the second inner shell 3 relative to the first inner shell 11, so that the volume of the acoustic cavity composed of the first inner shell 11 and the second inner shell 3 can be continuously changed. This allows the user to adjust the acoustic characteristics of the sound box by adjusting the volume of the acoustic cavity according to the type of music or personal preference during use. During the adjustment process, the volume of the acoustic cavity can be increased by lifting the second inner shell 3, so that a deeper and looser bass can be obtained. By lowering the second inner shell 3, the volume of the acoustic cavity can be reduced, so that a tighter and more elastic bass can be obtained. This allows the sound box to meet various listening needs.

[0050] In the specific implementation process, as shown in Figure 1 , Figure 3 and Figure 5As shown, the first inner shell 11 and the second inner shell 3 are both provided in a cylindrical structure, the second inner shell 3 is reversely inserted into the upper end of the first inner shell 11, the outer dimension of the second inner shell 3 is adapted to the inner dimension of the first inner shell 11, and the end walls of the first inner shell 11 and the second inner shell 3 are both fixedly embedded with reinforcing ribs in a grid structure.

[0051] During use of the sound equipment, the first inner shell 11 and the second inner shell 3 are both provided in a cylindrical structure, so that the acoustic cavity composed of the first inner shell 11 and the second inner shell 3 is in a cylindrical structure closed at the top and bottom. Influenced by the curved surface structure inside the acoustic cavity in a cylindrical structure, the sound waves will form diffuse reflection inside the acoustic cavity, which can avoid regular back-and-forth reflection of the sound waves inside the acoustic cavity, thereby greatly weakening the intensity of standing waves, making the frequency response more flat, and further making the sound more natural and pure, and improving the tone quality of the sound equipment.

[0052] In addition, the first inner shell 11 and the second inner shell 3 are provided in a cylindrical structure, and the high rigidity characteristics of the curved surface structure are combined with the reinforcement of the reinforcing ribs distributed in a grid structure in the end wall, which can effectively resist deformation caused by internal sound pressure, thereby effectively reducing the amplitude of the vibration of the first inner shell 11 and the second inner shell 3 during use of the sound equipment, which is beneficial to reducing the sound staining phenomenon to a certain extent. Moreover, the smooth and continuous curved surface structure can make the internal sound waves diffuse gently and uniformly, which is helpful to produce a more open sound field, thereby effectively improving the playing effect of the sound equipment.

[0053] In the specific implementation process, as shown in Figure 1 , Figure 3 , Figure 6 - Figure 7 The first inner shell 11 is fixedly installed with a vertically arranged sound absorbing rod 43, and the sound absorbing rod 43 is slidingly inserted into the connecting plate 41. The sound absorbing rod 43 is provided in a porous honeycomb structure. During use of the sound equipment, the sound absorbing rod 43 can be made of a porous honeycomb structure material such as porous ceramic or high-density foam. The sound absorbing rod 43 in a porous honeycomb structure can be regarded as a broadband sound absorber inside the first inner shell 11, which can effectively absorb the standing waves inside the first inner shell 11, especially has strong absorption effect on chaotic reflection of the middle and high frequency bands. When playing human voice, it can be more clear, and by slidingly inserting the vertically arranged sound absorbing rod 43 and the connecting plate 41, it can provide reliable radial rotation restriction and axial lifting guidance for the lifting of the second inner shell 3, which is beneficial to prevent the second inner shell 3 from shaking and deflecting during lifting adjustment relative to the first inner shell 11, thereby to a certain extent, the stability of the sound equipment during actual use is guaranteed.

[0054] In the specific implementation process, as shown in Figure 1 , Figure 3 , Figure 6 -Figure 7 and Figure 10 As shown, the lower end of the U-shaped frame 26 is rotatably sleeved outside the lower end of the first inner shell 11, a transmission mechanism is arranged between the U-shaped frame 26 and the drive shaft of the servo motor 5, and the servo motor 5 drives the U-shaped frame 26 to rotate clockwise and counterclockwise reciprocatingly through the transmission mechanism. During use of the sound box, when the servo motor 5 drives the screw rod mechanism to control the second inner shell 3 to adjust the lifting, the transmission mechanism can drive the U-shaped frame 26 to rotate clockwise and counterclockwise reciprocatingly with a small amplitude, drive the fixed and covered brush 27 to perform fine wiping on the dustproof net 21 received inside the shell 1, effectively improve the cleaning effect of the dustproof net 21, and a partition plate is arranged between the U-shaped frame 26 and the sound unit 12. The dust and lint cleaned from the dustproof net 21 cannot spread to the sound unit 12 under the blocking of the partition plate, and finally deposit at the bottom of the rotating drum 2, facilitating regular cleaning by the staff.

[0055] The transmission mechanism comprises a sector gear 6 fixedly installed on the drive shaft of the servo motor 5, the bottom of the first inner shell 11 is rotatably installed with a first inner ring gear 61 sleeved outside the sector gear 6, the center axes of the first inner ring gear 61 and the sector gear 6 do not coincide, the first inner ring gear 61 is in meshing transmission with the sector gear 6, the bottom of the first inner shell 11 is rotatably installed with a third gear 62 arranged outside the sector gear 6, and the third gear 62 is arranged below the first inner ring gear 61. The third gear 62 is in meshing transmission with the sector gear 6, the bottom of the U-shaped frame 26 is fixedly installed with a second inner ring gear 63 coaxially arranged therewith, the bottom of the first inner shell 11 is rotatably installed with a fourth gear 64 in meshing transmission with the second inner ring gear 63, the first inner ring gear 61 and the fourth gear 64 are in transmission connection through a first belt transmission assembly 65, the third gear 62 and the fourth gear 64 are in transmission connection through a second belt transmission assembly 66, the inner diameter of the first inner ring gear 61 is consistent with the outer diameter of the third gear 62, and the number of teeth on the inner side of the first inner ring gear 61 is consistent with the number of teeth on the outer side of the third gear 62.

[0056] During use of the sound box, when the servo motor 5 drives the screw rod mechanism to adjust the lifting of the second inner shell 3, the sector gear 6 is driven to rotate synchronously, and the sector gear 6 is in meshing transmission with the first inner ring gear 61 or the third gear 62 during rotation. Since the number of teeth arranged at the edge of the sector gear 6 is small, the sector gear 6 will only be in meshing transmission with one of the first inner ring gear 61 and the third gear 62 at the same time.

[0057] Since the sector gear 6 is engaged on the inner side of the first inner ring gear 61, when the sector gear 6 rotates and the sector gear 6 is kept in engagement with the first inner ring gear 61, the first inner ring gear 61 is driven to rotate in the same direction as the sector gear 6.

[0058] When the sector gear 6 is driven to rotate in one direction by the servo motor 5, the sector gear 6 can be intermittently engaged with the first inner ring gear 61 or the third gear 62, and in this transmission state, through the transmission connection between the first inner ring gear 61 and the fourth gear 64 by the first belt transmission assembly 65, and the transmission connection between the third gear 62 and the fourth gear 64 by the second belt transmission assembly 66, and cooperating with the engagement transmission between the fourth gear 64 and the second inner ring gear 63, the driving shaft of the servo motor can drive the U-shaped frame 26 to rotate reciprocatingly with the brush 27, and the U-shaped frame 26 can also drive the brush 27 to rotate reciprocatingly, which facilitates more flexible brushing and cleaning operation of the dust screen 21.

[0059] Specifically, the working principle of the present application is as follows:

[0060] Standby dustproof mode:

[0061] When the sound is powered off, the steering wheel 23 drives the rotating drum 2 to rotate 90°, and switches the dust screen 21 to the sound unit 12 and the sound hole 13, at this time, the dense structure of the dust screen 21 intercepts dust and lint, reducing the probability of dust and lint accumulating on the sound unit 12 when the sound is not used;

[0062] Working sound mode:

[0063] When the sound is started, the steering wheel 23 drives the rotating drum 2 to rotate 90° in the opposite direction, and switches the grid plate 22 to the sound unit 12 and the sound hole 13, and collides with the sound unit 12 for protection, and during the operation of the sound unit 12, the user can control the servo motor 5 to start according to the preference, and drive the lead screw 4 to rotate according to the preset value, and raise the second inner shell 3 to the target height, change the playing effect by adjusting the volume of the acoustic cavity, and in this process, the U-shaped frame 26 drives the brush 27 to swing reciprocatingly at a small angle through the transmission mechanism, and realizes fine cleaning of the dust screen 21.

[0064] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A multi-functional combined sound system comprising a housing (1), characterized in that: The inside of the shell (1) is fixedly provided with a first inner shell (11), and a sound emitting unit (12) is fixedly arranged on the outer end wall of the first inner shell (11); a sound hole (13) corresponding to the sound emitting unit (12) is arranged on the outer end wall of the shell (1); a rotating drum (2) is rotatably arranged outside the first inner shell (11) in the shell (1), and a dust screen (21) and a grating plate (22) are fixedly arranged on the cylindrical surface of the rotating drum (2); a rudder (23) for driving the rotating drum (2) to rotate is fixedly arranged in the shell (1); a U-shaped frame (26) is rotatably arranged outside the first inner shell (11) on the inner side of the rotating drum (2), and the U-shaped frame (26) is arranged in a staggered manner with the sound emitting unit (12); a brush (27) is fixedly arranged on the side of the U-shaped frame (26) close to the rotating drum (2); a second inner shell (3) is slidably inserted into the upper end of the first inner shell (11); a lead screw mechanism for controlling the lifting adjustment of the second inner shell (3) is arranged on the inner side of the first inner shell (11); a servo motor (5) for driving the lead screw mechanism is fixedly arranged in the shell (1), and a transmission mechanism is arranged between the driving shaft of the servo motor (5) and the U-shaped frame (26); the lower end of the U-shaped frame (26) is rotatably sleeved outside 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 reciprocatingly through the transmission mechanism. The sound emitting unit (12), the sound hole (13), the dust screen (21), the grating plate (22) and the brush (27) are all provided with two; the two sound emitting units (12) are fixedly arranged on the outer end wall of the first inner shell (11) in a central axis symmetrical manner; the two dust screens (21) and grating plates (22) are evenly and circumferentially arranged on the cylindrical surface of the rotating drum (2); and the dust screens (21) and grating plates (22) are arranged in a staggered manner. A first gear (24) is fixedly arranged at the bottom axial position of the rotating drum (2); a second gear (25) is fixedly arranged on the driving shaft of the rudder (23) and is in meshing transmission with the first gear (24); the amplitude of single rotation of the rudder (23) is 180°; and the transmission ratio between the second gear (25) and the first gear (24) is 1:

2.

2. The multi-functional combined sound system of claim 1, wherein: The first inner shell (11) and the second inner shell (3) are both provided in a cylindrical structure; the second inner shell (3) is reversely inserted into the inside of the upper end of the first inner shell (11); and the outer side dimension of the second inner shell (3) is adapted to the inner side dimension of the first inner shell (11).

3. The multi-functional combined sound system of claim 2, wherein: Reinforcing ribs are fixedly embedded in the end walls of the first inner shell (11) and the second inner shell (3); and the reinforcing ribs are evenly distributed in a grid structure.

4. The multi-functional combined sound system of claim 3, wherein: The screw rod mechanism comprises a screw rod (4) vertically and rotatably installed at a central axis position in the first inner shell (11), a connecting plate (41) fixedly installed at a lower end position in the second inner shell (3), a screw sleeve (42) fixedly installed on the connecting plate (41), the screw sleeve (42) being threadedly connected with the screw rod (4), and a lower end of the screw rod (4) being fixedly connected with a driving shaft of the servo motor (5).

5. The multi-functional combined sound system of claim 4, wherein: The first inner shell (11) is fixedly installed with a sound absorption rod (43) vertically arranged, the sound absorption rod (43) being slidably inserted into the connecting plate (41), and the sound absorption rod (43) being arranged in a porous honeycomb structure.

6. The multi-functional combined sound system of claim 1, wherein: The transmission mechanism comprises a sector gear (6) fixedly installed on the driving shaft of the servo motor (5), a first inner ring gear (61) rotatably installed at the bottom of the first inner shell (11) and sleeved outside the sector gear (6), the central axis of the first inner ring gear (61) and the sector gear (6) not coinciding, the first inner ring gear (61) being in meshing transmission with the sector gear (6), a third gear (62) rotatably installed at the bottom of the first inner shell (11) and arranged outside the sector gear (6), the third gear (62) being arranged below the first inner ring gear (61), the third gear (62) being in meshing transmission with the sector gear (6), a second inner ring gear (63) coaxially arranged with the U-shaped frame (26) and fixedly installed at the bottom of the U-shaped frame (26), a fourth gear (64) rotatably installed at the bottom of the first inner shell (11) and in meshing transmission with the second inner ring gear (63), and a first belt transmission assembly (65) in transmission connection between the first inner ring gear (61) and the fourth gear (64), and a second belt transmission assembly (66) in transmission connection between the third gear (62) and the fourth gear (64).

7. The multi-functional combined sound system of claim 6, wherein: The inner diameter of the first inner ring gear (61) is consistent with the outer diameter of the third gear (62), and the number of teeth on the inner side of the first inner ring gear (61) is consistent with the number of teeth on the outer side of the third gear (62).

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